remote_node_context.o \
remote_node_table.o \
unsolicited_frame_control.o \
- core/scic_sds_request.o \
- core/scic_sds_stp_request.o \
+ stp_request.o \
+ ssp_request.o \
+ smp_request.o \
core/scic_sds_port.o \
core/scic_sds_port_configuration_agent.o \
core/scic_sds_phy.o \
- core/scic_sds_ssp_request.o \
- core/scic_sds_smp_request.o \
- core/sci_util.o
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <linux/kernel.h>
-#include "sci_util.h"
-#include "request.h"
-
-void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr)
-{
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- dma_addr_t offset;
-
- BUG_ON(phys_addr < ireq->request_daddr);
-
- offset = phys_addr - ireq->request_daddr;
-
- BUG_ON(offset >= sizeof(*ireq));
-
- return (char *)ireq + offset;
-}
-
-dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
- void *virt_addr)
-{
- struct isci_request *isci_request = sci_req_to_ireq(sds_request);
-
- char *requested_addr = (char *)virt_addr;
- char *base_addr = (char *)isci_request;
-
- BUG_ON(requested_addr < base_addr);
- BUG_ON((requested_addr - base_addr) >= sizeof(*isci_request));
-
- return isci_request->request_daddr + (requested_addr - base_addr);
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCI_UTIL_H_
-#define _SCI_UTIL_H_
-
-#include "scic_sds_request.h"
-
-#define SCIC_BUILD_DWORD(char_buffer) \
- (\
- ((char_buffer)[0] << 24) \
- | ((char_buffer)[1] << 16) \
- | ((char_buffer)[2] << 8) \
- | ((char_buffer)[3]) \
- )
-
-#define sci_cb_make_physical_address(physical_addr, addr_upper, addr_lower) \
- ((physical_addr) = (addr_lower) | ((u64)addr_upper) << 32)
-
-/**
- * sci_swab32_cpy - convert between scsi and scu-hardware byte format
- * @dest: receive the 4-byte endian swapped version of src
- * @src: word aligned source buffer
- *
- * scu hardware handles SSP/SMP control, response, and unidentified
- * frames in "big endian dword" order. Regardless of host endian this
- * is always a swab32()-per-dword conversion of the standard definition,
- * i.e. single byte fields swapped and multi-byte fields in little-
- * endian
- */
-static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
-{
- u32 *dest = _dest, *src = _src;
-
- while (--word_cnt >= 0)
- dest[word_cnt] = swab32(src[word_cnt]);
-}
-
-void *scic_request_get_virt_addr(struct scic_sds_request *sds_request,
- dma_addr_t phys_addr);
-
-dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
- void *virt_addr);
-
-#endif /* _SCI_UTIL_H_ */
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_IO_REQUEST_H_
-#define _SCIC_IO_REQUEST_H_
-
-#include <linux/kernel.h>
-
-struct scic_sds_request;
-struct scic_sds_remote_device;
-struct scic_sds_controller;
-
-/**
- * This enumeration specifies the transport protocol utilized for the request.
- *
- *
- */
-typedef enum {
- /**
- * This enumeration constant indicates that no protocol has yet been
- * set.
- */
- SCIC_NO_PROTOCOL,
-
- /**
- * This enumeration constant indicates that the protocol utilized
- * is the Serial Management Protocol.
- */
- SCIC_SMP_PROTOCOL,
-
- /**
- * This enumeration constant indicates that the protocol utilized
- * is the Serial SCSI Protocol.
- */
- SCIC_SSP_PROTOCOL,
-
- /**
- * This enumeration constant indicates that the protocol utilized
- * is the Serial-ATA Tunneling Protocol.
- */
- SCIC_STP_PROTOCOL
-
-} SCIC_TRANSPORT_PROTOCOL;
-
-enum sci_status scic_io_request_construct(
- struct scic_sds_controller *scic_controller,
- struct scic_sds_remote_device *scic_remote_device,
- u16 io_tag, struct scic_sds_request *sci_req);
-
-/**
- * scic_io_request_construct_basic_ssp() - This method is called by the SCI
- * user to build an SSP IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- * object to be built.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the SSP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_basic_ssp(
- struct scic_sds_request *scic_io_request);
-
-
-
-
-
-/**
- * scic_io_request_construct_basic_sata() - This method is called by the SCI
- * Core user to build an STP IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- * object to be built.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the STP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_basic_sata(
- struct scic_sds_request *scic_io_request);
-
-
-
-
-/**
- * scic_io_request_construct_smp() - This method is called by the SCI user to
- * build an SMP IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- * object to be built.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the SMP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_smp(
- struct scic_sds_request *scic_io_request);
-
-
-
-/**
- * scic_request_get_controller_status() - This method returns the controller
- * specific IO/Task request status. These status values are unique to the
- * specific controller being managed by the SCIC.
- * @io_request: the handle to the IO or task management request object for
- * which to retrieve the status.
- *
- * This method returns a value indicating the controller specific request
- * status.
- */
-u32 scic_request_get_controller_status(
- struct scic_sds_request *io_request);
-
-/**
- * scic_io_request_get_io_tag() - This method will return the IO tag utilized
- * by the IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- * object for which to return the IO tag.
- *
- * An unsigned integer representing the IO tag being utilized.
- * SCI_CONTROLLER_INVALID_IO_TAG This value is returned if the IO does not
- * currently have an IO tag allocated to it. All return other values indicate a
- * legitimate tag.
- */
-u16 scic_io_request_get_io_tag(
- struct scic_sds_request *scic_io_request);
-
-
-/**
- * scic_stp_io_request_set_ncq_tag() - This method will assign an NCQ tag to
- * the io request object. The caller of this function must make sure that
- * only valid NCQ tags are assigned to the io request object.
- * @scic_io_request: This parameter specifies the handle to the io request
- * object to which to assign the ncq tag.
- * @ncq_tag: This parameter specifies the NCQ tag to be utilized for the
- * supplied core IO request. It is up to the user to make sure that this is
- * a valid NCQ tag.
- *
- * none This function is only valid for SATA NCQ requests.
- */
-void scic_stp_io_request_set_ncq_tag(
- struct scic_sds_request *scic_io_request,
- u16 ncq_tag);
-
-/**
- * scic_io_request_get_number_of_bytes_transferred() - This method will return
- * the number of bytes transferred from the SCU
- * @scic_io_request: This parameter specifies the handle to the io request
- * whose data length was not eqaul to the data length specified in the
- * request. When the driver gets an early io completion status from the
- * hardware, this routine should be called to get the actual number of bytes
- * transferred
- *
- * The return is the number of bytes transferred when the data legth is not
- * equal to the specified length in the io request
- */
-u32 scic_io_request_get_number_of_bytes_transferred(
- struct scic_sds_request *scic_io_request);
-
-
-#endif /* _SCIC_IO_REQUEST_H_ */
-
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "remote_node_context.h"
-#include "sci_util.h"
#include "scu_event_codes.h"
#include "timers.h"
#include "scic_sds_port.h"
#include "remote_device.h"
#include "remote_node_context.h"
-#include "scic_sds_request.h"
#include "registers.h"
#include "timers.h"
+#include "scu_task_context.h"
#define SCIC_SDS_PORT_MIN_TIMER_COUNT (SCI_MAX_PORTS)
#define SCIC_SDS_PORT_MAX_TIMER_COUNT (SCI_MAX_PORTS)
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <scsi/sas.h>
-#include "scic_io_request.h"
-#include "registers.h"
-#include "scic_sds_port.h"
-#include "remote_device.h"
-#include "scic_sds_request.h"
-#include "scic_sds_smp_request.h"
-#include "scic_sds_stp_request.h"
-#include "unsolicited_frame_control.h"
-#include "sci_util.h"
-#include "scu_completion_codes.h"
-#include "scu_task_context.h"
-#include "request.h"
-#include "task.h"
-
-/*
- * ****************************************************************************
- * * SCIC SDS IO REQUEST CONSTANTS
- * **************************************************************************** */
-
-/**
- *
- *
- * We have no timer requirements for IO requests right now
- */
-#define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0)
-#define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0)
-
-/**
- * This method returns the sgl element pair for the specificed sgl_pair index.
- * @sci_req: This parameter specifies the IO request for which to retrieve
- * the Scatter-Gather List element pair.
- * @sgl_pair_index: This parameter specifies the index into the SGL element
- * pair to be retrieved.
- *
- * This method returns a pointer to an struct scu_sgl_element_pair.
- */
-static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
- struct scic_sds_request *sci_req,
- u32 sgl_pair_index
- ) {
- struct scu_task_context *task_context;
-
- task_context = (struct scu_task_context *)sci_req->task_context_buffer;
-
- if (sgl_pair_index == 0) {
- return &task_context->sgl_pair_ab;
- } else if (sgl_pair_index == 1) {
- return &task_context->sgl_pair_cd;
- }
-
- return &sci_req->sg_table[sgl_pair_index - 2];
-}
-
-/**
- * This function will build the SGL list for an IO request.
- * @sci_req: This parameter specifies the IO request for which to build
- * the Scatter-Gather List.
- *
- */
-void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
-{
- struct isci_request *isci_request = sci_req_to_ireq(sds_request);
- struct isci_host *isci_host = isci_request->isci_host;
- struct sas_task *task = isci_request_access_task(isci_request);
- struct scatterlist *sg = NULL;
- dma_addr_t dma_addr;
- u32 sg_idx = 0;
- struct scu_sgl_element_pair *scu_sg = NULL;
- struct scu_sgl_element_pair *prev_sg = NULL;
-
- if (task->num_scatter > 0) {
- sg = task->scatter;
-
- while (sg) {
- scu_sg = scic_sds_request_get_sgl_element_pair(
- sds_request,
- sg_idx);
-
- SCU_SGL_COPY(scu_sg->A, sg);
-
- sg = sg_next(sg);
-
- if (sg) {
- SCU_SGL_COPY(scu_sg->B, sg);
- sg = sg_next(sg);
- } else
- SCU_SGL_ZERO(scu_sg->B);
-
- if (prev_sg) {
- dma_addr =
- scic_io_request_get_dma_addr(
- sds_request,
- scu_sg);
-
- prev_sg->next_pair_upper =
- upper_32_bits(dma_addr);
- prev_sg->next_pair_lower =
- lower_32_bits(dma_addr);
- }
-
- prev_sg = scu_sg;
- sg_idx++;
- }
- } else { /* handle when no sg */
- scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
- sg_idx);
-
- dma_addr = dma_map_single(&isci_host->pdev->dev,
- task->scatter,
- task->total_xfer_len,
- task->data_dir);
-
- isci_request->zero_scatter_daddr = dma_addr;
-
- scu_sg->A.length = task->total_xfer_len;
- scu_sg->A.address_upper = upper_32_bits(dma_addr);
- scu_sg->A.address_lower = lower_32_bits(dma_addr);
- }
-
- if (scu_sg) {
- scu_sg->next_pair_upper = 0;
- scu_sg->next_pair_lower = 0;
- }
-}
-
-static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
-{
- if (sci_req->was_tag_assigned_by_user == false)
- sci_req->task_context_buffer = &sci_req->tc;
-}
-
-static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
-{
- struct ssp_cmd_iu *cmd_iu;
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- struct sas_task *task = isci_request_access_task(ireq);
-
- cmd_iu = &sci_req->ssp.cmd;
-
- memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
- cmd_iu->add_cdb_len = 0;
- cmd_iu->_r_a = 0;
- cmd_iu->_r_b = 0;
- cmd_iu->en_fburst = 0; /* unsupported */
- cmd_iu->task_prio = task->ssp_task.task_prio;
- cmd_iu->task_attr = task->ssp_task.task_attr;
- cmd_iu->_r_c = 0;
-
- sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
- sizeof(task->ssp_task.cdb) / sizeof(u32));
-}
-
-static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
-{
- struct ssp_task_iu *task_iu;
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- struct sas_task *task = isci_request_access_task(ireq);
- struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
-
- task_iu = &sci_req->ssp.tmf;
-
- memset(task_iu, 0, sizeof(struct ssp_task_iu));
-
- memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
-
- task_iu->task_func = isci_tmf->tmf_code;
- task_iu->task_tag =
- (ireq->ttype == tmf_task) ?
- isci_tmf->io_tag :
- SCI_CONTROLLER_INVALID_IO_TAG;
-}
-
-/**
- * This method is will fill in the SCU Task Context for any type of SSP request.
- * @sci_req:
- * @task_context:
- *
- */
-static void scu_ssp_reqeust_construct_task_context(
- struct scic_sds_request *sds_request,
- struct scu_task_context *task_context)
-{
- dma_addr_t dma_addr;
- struct scic_sds_controller *controller;
- struct scic_sds_remote_device *target_device;
- struct scic_sds_port *target_port;
-
- controller = scic_sds_request_get_controller(sds_request);
- target_device = scic_sds_request_get_device(sds_request);
- target_port = scic_sds_request_get_port(sds_request);
-
- /* Fill in the TC with the its required data */
- task_context->abort = 0;
- task_context->priority = 0;
- task_context->initiator_request = 1;
- task_context->connection_rate = target_device->connection_rate;
- task_context->protocol_engine_index =
- scic_sds_controller_get_protocol_engine_group(controller);
- task_context->logical_port_index =
- scic_sds_port_get_index(target_port);
- task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
- task_context->valid = SCU_TASK_CONTEXT_VALID;
- task_context->context_type = SCU_TASK_CONTEXT_TYPE;
-
- task_context->remote_node_index =
- scic_sds_remote_device_get_index(sds_request->target_device);
- task_context->command_code = 0;
-
- task_context->link_layer_control = 0;
- task_context->do_not_dma_ssp_good_response = 1;
- task_context->strict_ordering = 0;
- task_context->control_frame = 0;
- task_context->timeout_enable = 0;
- task_context->block_guard_enable = 0;
-
- task_context->address_modifier = 0;
-
- /* task_context->type.ssp.tag = sci_req->io_tag; */
- task_context->task_phase = 0x01;
-
- if (sds_request->was_tag_assigned_by_user) {
- /*
- * Build the task context now since we have already read
- * the data
- */
- sds_request->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(
- controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
- scic_sds_io_tag_get_index(sds_request->io_tag));
- } else {
- /*
- * Build the task context now since we have already read
- * the data
- *
- * I/O tag index is not assigned because we have to wait
- * until we get a TCi
- */
- sds_request->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(
- owning_controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
- }
-
- /*
- * Copy the physical address for the command buffer to the
- * SCU Task Context
- */
- dma_addr = scic_io_request_get_dma_addr(sds_request,
- &sds_request->ssp.cmd);
-
- task_context->command_iu_upper = upper_32_bits(dma_addr);
- task_context->command_iu_lower = lower_32_bits(dma_addr);
-
- /*
- * Copy the physical address for the response buffer to the
- * SCU Task Context
- */
- dma_addr = scic_io_request_get_dma_addr(sds_request,
- &sds_request->ssp.rsp);
-
- task_context->response_iu_upper = upper_32_bits(dma_addr);
- task_context->response_iu_lower = lower_32_bits(dma_addr);
-}
-
-/**
- * This method is will fill in the SCU Task Context for a SSP IO request.
- * @sci_req:
- *
- */
-static void scu_ssp_io_request_construct_task_context(
- struct scic_sds_request *sci_req,
- enum dma_data_direction dir,
- u32 len)
-{
- struct scu_task_context *task_context;
-
- task_context = scic_sds_request_get_task_context(sci_req);
-
- scu_ssp_reqeust_construct_task_context(sci_req, task_context);
-
- task_context->ssp_command_iu_length =
- sizeof(struct ssp_cmd_iu) / sizeof(u32);
- task_context->type.ssp.frame_type = SSP_COMMAND;
-
- switch (dir) {
- case DMA_FROM_DEVICE:
- case DMA_NONE:
- default:
- task_context->task_type = SCU_TASK_TYPE_IOREAD;
- break;
- case DMA_TO_DEVICE:
- task_context->task_type = SCU_TASK_TYPE_IOWRITE;
- break;
- }
-
- task_context->transfer_length_bytes = len;
-
- if (task_context->transfer_length_bytes > 0)
- scic_sds_request_build_sgl(sci_req);
-}
-
-static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
-{
- if (sci_req->was_tag_assigned_by_user == false)
- sci_req->task_context_buffer = &sci_req->tc;
-}
-
-/**
- * This method will fill in the SCU Task Context for a SSP Task request. The
- * following important settings are utilized: -# priority ==
- * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued
- * ahead of other task destined for the same Remote Node. -# task_type ==
- * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type
- * (i.e. non-raw frame) is being utilized to perform task management. -#
- * control_frame == 1. This ensures that the proper endianess is set so
- * that the bytes are transmitted in the right order for a task frame.
- * @sci_req: This parameter specifies the task request object being
- * constructed.
- *
- */
-static void scu_ssp_task_request_construct_task_context(
- struct scic_sds_request *sci_req)
-{
- struct scu_task_context *task_context;
-
- task_context = scic_sds_request_get_task_context(sci_req);
-
- scu_ssp_reqeust_construct_task_context(sci_req, task_context);
-
- task_context->control_frame = 1;
- task_context->priority = SCU_TASK_PRIORITY_HIGH;
- task_context->task_type = SCU_TASK_TYPE_RAW_FRAME;
- task_context->transfer_length_bytes = 0;
- task_context->type.ssp.frame_type = SSP_TASK;
- task_context->ssp_command_iu_length =
- sizeof(struct ssp_task_iu) / sizeof(u32);
-}
-
-
-/**
- * This method constructs the SSP Command IU data for this ssp passthrough
- * comand request object.
- * @sci_req: This parameter specifies the request object for which the SSP
- * command information unit is being built.
- *
- * enum sci_status, returns invalid parameter is cdb > 16
- */
-
-
-/**
- * This method constructs the SATA request object.
- * @sci_req:
- * @sat_protocol:
- * @transfer_length:
- * @data_direction:
- * @copy_rx_frame:
- *
- * enum sci_status
- */
-static enum sci_status
-scic_io_request_construct_sata(struct scic_sds_request *sci_req,
- u32 len,
- enum dma_data_direction dir,
- bool copy)
-{
- enum sci_status status = SCI_SUCCESS;
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- struct sas_task *task = isci_request_access_task(ireq);
-
- /* check for management protocols */
- if (ireq->ttype == tmf_task) {
- struct isci_tmf *tmf = isci_request_access_tmf(ireq);
-
- if (tmf->tmf_code == isci_tmf_sata_srst_high ||
- tmf->tmf_code == isci_tmf_sata_srst_low)
- return scic_sds_stp_soft_reset_request_construct(sci_req);
- else {
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: Request 0x%p received un-handled SAT "
- "management protocol 0x%x.\n",
- __func__, sci_req, tmf->tmf_code);
-
- return SCI_FAILURE;
- }
- }
-
- if (!sas_protocol_ata(task->task_proto)) {
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: Non-ATA protocol in SATA path: 0x%x\n",
- __func__,
- task->task_proto);
- return SCI_FAILURE;
-
- }
-
- /* non data */
- if (task->data_dir == DMA_NONE)
- return scic_sds_stp_non_data_request_construct(sci_req);
-
- /* NCQ */
- if (task->ata_task.use_ncq)
- return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
-
- /* DMA */
- if (task->ata_task.dma_xfer)
- return scic_sds_stp_udma_request_construct(sci_req, len, dir);
- else /* PIO */
- return scic_sds_stp_pio_request_construct(sci_req, copy);
-
- return status;
-}
-
-enum sci_status scic_io_request_construct_basic_ssp(
- struct scic_sds_request *sci_req)
-{
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- struct sas_task *task = isci_request_access_task(ireq);
-
- sci_req->protocol = SCIC_SSP_PROTOCOL;
-
- scu_ssp_io_request_construct_task_context(sci_req,
- task->data_dir,
- task->total_xfer_len);
-
- scic_sds_io_request_build_ssp_command_iu(sci_req);
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
- return SCI_SUCCESS;
-}
-
-
-enum sci_status scic_task_request_construct_ssp(
- struct scic_sds_request *sci_req)
-{
- /* Construct the SSP Task SCU Task Context */
- scu_ssp_task_request_construct_task_context(sci_req);
-
- /* Fill in the SSP Task IU */
- scic_sds_task_request_build_ssp_task_iu(sci_req);
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
- return SCI_SUCCESS;
-}
-
-
-enum sci_status scic_io_request_construct_basic_sata(
- struct scic_sds_request *sci_req)
-{
- enum sci_status status;
- struct scic_sds_stp_request *stp_req;
- bool copy = false;
- struct isci_request *isci_request = sci_req_to_ireq(sci_req);
- struct sas_task *task = isci_request_access_task(isci_request);
-
- stp_req = &sci_req->stp.req;
- sci_req->protocol = SCIC_STP_PROTOCOL;
-
- copy = (task->data_dir == DMA_NONE) ? false : true;
-
- status = scic_io_request_construct_sata(sci_req,
- task->total_xfer_len,
- task->data_dir,
- copy);
-
- if (status == SCI_SUCCESS)
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
- return status;
-}
-
-
-enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
-{
- enum sci_status status = SCI_SUCCESS;
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
-
- /* check for management protocols */
- if (ireq->ttype == tmf_task) {
- struct isci_tmf *tmf = isci_request_access_tmf(ireq);
-
- if (tmf->tmf_code == isci_tmf_sata_srst_high ||
- tmf->tmf_code == isci_tmf_sata_srst_low) {
- status = scic_sds_stp_soft_reset_request_construct(sci_req);
- } else {
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: Request 0x%p received un-handled SAT "
- "Protocol 0x%x.\n",
- __func__, sci_req, tmf->tmf_code);
-
- return SCI_FAILURE;
- }
- }
-
- if (status == SCI_SUCCESS)
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
- return status;
-}
-
-
-u16 scic_io_request_get_io_tag(
- struct scic_sds_request *sci_req)
-{
- return sci_req->io_tag;
-}
-
-
-u32 scic_request_get_controller_status(
- struct scic_sds_request *sci_req)
-{
- return sci_req->scu_status;
-}
-
-#define SCU_TASK_CONTEXT_SRAM 0x200000
-u32 scic_io_request_get_number_of_bytes_transferred(
- struct scic_sds_request *scic_sds_request)
-{
- struct scic_sds_controller *scic = scic_sds_request->owning_controller;
- u32 ret_val = 0;
-
- if (readl(&scic->smu_registers->address_modifier) == 0) {
- void __iomem *scu_reg_base = scic->scu_registers;
- /*
- * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
- * BAR1 is the scu_registers
- * 0x20002C = 0x200000 + 0x2c
- * = start of task context SRAM + offset of (type.ssp.data_offset)
- * TCi is the io_tag of struct scic_sds_request */
- ret_val = readl(scu_reg_base +
- (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
- ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag)));
- }
-
- return ret_val;
-}
-
-
-/*
- * ****************************************************************************
- * * SCIC SDS Interface Implementation
- * **************************************************************************** */
-
-enum sci_status
-scic_sds_request_start(struct scic_sds_request *request)
-{
- if (request->device_sequence !=
- scic_sds_remote_device_get_sequence(request->target_device))
- return SCI_FAILURE;
-
- if (request->state_handlers->start_handler)
- return request->state_handlers->start_handler(request);
-
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request requested to start while in wrong "
- "state %d\n",
- __func__,
- sci_base_state_machine_get_state(&request->state_machine));
-
- return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status
-scic_sds_io_request_terminate(struct scic_sds_request *request)
-{
- if (request->state_handlers->abort_handler)
- return request->state_handlers->abort_handler(request);
-
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request requested to abort while in wrong "
- "state %d\n",
- __func__,
- sci_base_state_machine_get_state(&request->state_machine));
-
- return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status
-scic_sds_io_request_complete(struct scic_sds_request *request)
-{
- if (request->state_handlers->complete_handler)
- return request->state_handlers->complete_handler(request);
-
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request requested to complete while in wrong "
- "state %d\n",
- __func__,
- sci_base_state_machine_get_state(&request->state_machine));
-
- return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status scic_sds_io_request_event_handler(
- struct scic_sds_request *request,
- u32 event_code)
-{
- if (request->state_handlers->event_handler)
- return request->state_handlers->event_handler(request, event_code);
-
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request given event code notification %x while "
- "in wrong state %d\n",
- __func__,
- event_code,
- sci_base_state_machine_get_state(&request->state_machine));
-
- return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status
-scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
-{
- if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
- request->has_started_substate_machine == false)
- return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
- else if (request->state_handlers->tc_completion_handler)
- return request->state_handlers->tc_completion_handler(request, completion_code);
-
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request given task completion notification %x "
- "while in wrong state %d\n",
- __func__,
- completion_code,
- sci_base_state_machine_get_state(&request->state_machine));
-
- return SCI_FAILURE_INVALID_STATE;
-
-}
-
-
-/**
- *
- * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
- * operation is to be executed.
- * @frame_index: The frame index returned by the hardware for the reqeust
- * object.
- *
- * This method invokes the core state frame handler for the
- * SCIC_SDS_IO_REQUEST_T object. enum sci_status
- */
-enum sci_status scic_sds_io_request_frame_handler(
- struct scic_sds_request *request,
- u32 frame_index)
-{
- if (request->state_handlers->frame_handler)
- return request->state_handlers->frame_handler(request, frame_index);
-
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request given unexpected frame %x while in "
- "state %d\n",
- __func__,
- frame_index,
- sci_base_state_machine_get_state(&request->state_machine));
-
- scic_sds_controller_release_frame(request->owning_controller, frame_index);
- return SCI_FAILURE_INVALID_STATE;
-}
-
-/*
- * This function copies response data for requests returning response data
- * instead of sense data.
- * @sci_req: This parameter specifies the request object for which to copy
- * the response data.
- */
-void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
-{
- void *resp_buf;
- u32 len;
- struct ssp_response_iu *ssp_response;
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
-
- ssp_response = &sci_req->ssp.rsp;
-
- resp_buf = &isci_tmf->resp.resp_iu;
-
- len = min_t(u32,
- SSP_RESP_IU_MAX_SIZE,
- be32_to_cpu(ssp_response->response_data_len));
-
- memcpy(resp_buf, ssp_response->resp_data, len);
-}
-
-/*
- * *****************************************************************************
- * * CONSTRUCTED STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action taken when a constructed
- * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
- * This method will, if necessary, allocate a TCi for the io request object and
- * then will, if necessary, copy the constructed TC data into the actual TC
- * buffer. If everything is successful the post context field is updated with
- * the TCi so the controller can post the request to the hardware. enum sci_status
- * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
- */
-static enum sci_status scic_sds_request_constructed_state_start_handler(
- struct scic_sds_request *request)
-{
- struct scu_task_context *task_context;
-
- if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
- request->io_tag =
- scic_controller_allocate_io_tag(request->owning_controller);
- }
-
- /* Record the IO Tag in the request */
- if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
- task_context = request->task_context_buffer;
-
- task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
-
- switch (task_context->protocol_type) {
- case SCU_TASK_CONTEXT_PROTOCOL_SMP:
- case SCU_TASK_CONTEXT_PROTOCOL_SSP:
- /* SSP/SMP Frame */
- task_context->type.ssp.tag = request->io_tag;
- task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
- break;
-
- case SCU_TASK_CONTEXT_PROTOCOL_STP:
- /*
- * STP/SATA Frame
- * task_context->type.stp.ncq_tag = request->ncq_tag; */
- break;
-
- case SCU_TASK_CONTEXT_PROTOCOL_NONE:
- /* / @todo When do we set no protocol type? */
- break;
-
- default:
- /* This should never happen since we build the IO requests */
- break;
- }
-
- /*
- * Check to see if we need to copy the task context buffer
- * or have been building into the task context buffer */
- if (request->was_tag_assigned_by_user == false) {
- scic_sds_controller_copy_task_context(
- request->owning_controller, request);
- }
-
- /* Add to the post_context the io tag value */
- request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
-
- /* Everything is good go ahead and change state */
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_STARTED);
-
- return SCI_SUCCESS;
- }
-
- return SCI_FAILURE_INSUFFICIENT_RESOURCES;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. Since the request
- * has not yet been posted to the hardware the request transitions to the
- * completed state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_constructed_state_abort_handler(
- struct scic_sds_request *request)
-{
- /*
- * This request has been terminated by the user make sure that the correct
- * status code is returned */
- scic_sds_request_set_status(request,
- SCU_TASK_DONE_TASK_ABORT,
- SCI_FAILURE_IO_TERMINATED);
-
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * * STARTED STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. Since the request
- * has been posted to the hardware the io request state is changed to the
- * aborting state. enum sci_status SCI_SUCCESS
- */
-enum sci_status scic_sds_request_started_state_abort_handler(
- struct scic_sds_request *request)
-{
- if (request->has_started_substate_machine)
- sci_base_state_machine_stop(&request->started_substate_machine);
-
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_ABORTING);
- return SCI_SUCCESS;
-}
-
-/*
- * scic_sds_request_started_state_tc_completion_handler() - This method process
- * TC (task context) completions for normal IO request (i.e. Task/Abort
- * Completions of type 0). This method will update the
- * SCIC_SDS_IO_REQUEST_T::status field.
- * @sci_req: This parameter specifies the request for which a completion
- * occurred.
- * @completion_code: This parameter specifies the completion code received from
- * the SCU.
- *
- */
-enum sci_status
-scic_sds_request_started_state_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- u8 datapres;
- struct ssp_response_iu *resp_iu;
-
- /*
- * TODO: Any SDMA return code of other than 0 is bad
- * decode 0x003C0000 to determine SDMA status
- */
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(sci_req,
- SCU_TASK_DONE_GOOD,
- SCI_SUCCESS);
- break;
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
- {
- /*
- * There are times when the SCU hardware will return an early
- * response because the io request specified more data than is
- * returned by the target device (mode pages, inquiry data,
- * etc.). We must check the response stats to see if this is
- * truly a failed request or a good request that just got
- * completed early.
- */
- struct ssp_response_iu *resp = &sci_req->ssp.rsp;
- ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
-
- sci_swab32_cpy(&sci_req->ssp.rsp,
- &sci_req->ssp.rsp,
- word_cnt);
-
- if (resp->status == 0) {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_GOOD,
- SCI_SUCCESS_IO_DONE_EARLY);
- } else {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
- }
- }
- break;
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
- {
- ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
-
- sci_swab32_cpy(&sci_req->ssp.rsp,
- &sci_req->ssp.rsp,
- word_cnt);
-
- scic_sds_request_set_status(sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
- break;
- }
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
- /*
- * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
- * guaranteed to be received before this completion status is
- * posted?
- */
- resp_iu = &sci_req->ssp.rsp;
- datapres = resp_iu->datapres;
-
- if ((datapres == 0x01) || (datapres == 0x02)) {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
- } else
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
- break;
-
- /* only stp device gets suspended. */
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
- if (sci_req->protocol == SCIC_STP_PROTOCOL) {
- scic_sds_request_set_status(
- sci_req,
- SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
- SCU_COMPLETION_TL_STATUS_SHIFT,
- SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
- } else {
- scic_sds_request_set_status(
- sci_req,
- SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
- SCU_COMPLETION_TL_STATUS_SHIFT,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- }
- break;
-
- /* both stp/ssp device gets suspended */
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
- scic_sds_request_set_status(
- sci_req,
- SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
- SCU_COMPLETION_TL_STATUS_SHIFT,
- SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
- break;
-
- /* neither ssp nor stp gets suspended. */
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
- default:
- scic_sds_request_set_status(
- sci_req,
- SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
- SCU_COMPLETION_TL_STATUS_SHIFT,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- break;
- }
-
- /*
- * TODO: This is probably wrong for ACK/NAK timeout conditions
- */
-
- /* In all cases we will treat this as the completion of the IO req. */
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- return SCI_SUCCESS;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_frame_handler() request. This method
- * first determines the frame type received. If this is a response frame then
- * the response data is copied to the io request response buffer for processing
- * at completion time. If the frame type is not a response buffer an error is
- * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
- */
-static enum sci_status
-scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- u32 *frame_header;
- struct ssp_frame_hdr ssp_hdr;
- ssize_t word_cnt;
-
- status = scic_sds_unsolicited_frame_control_get_header(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- (void **)&frame_header);
-
- word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
- sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
-
- if (ssp_hdr.frame_type == SSP_RESPONSE) {
- struct ssp_response_iu *resp_iu;
- ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
-
- status = scic_sds_unsolicited_frame_control_get_buffer(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- (void **)&resp_iu);
-
- sci_swab32_cpy(&sci_req->ssp.rsp,
- resp_iu, word_cnt);
-
- resp_iu = &sci_req->ssp.rsp;
-
- if ((resp_iu->datapres == 0x01) ||
- (resp_iu->datapres == 0x02)) {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- } else
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
- } else {
- /* This was not a response frame why did it get forwarded? */
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: SCIC IO Request 0x%p received unexpected "
- "frame %d type 0x%02x\n",
- __func__,
- sci_req,
- frame_index,
- ssp_hdr.frame_type);
- }
-
- /*
- * In any case we are done with this frame buffer return it to the
- * controller
- */
- scic_sds_controller_release_frame(
- sci_req->owning_controller, frame_index);
-
- return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * * COMPLETED STATE HANDLERS
- * ***************************************************************************** */
-
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_complete() request. This method frees up
- * any io request resources that have been allocated and transitions the
- * request to its final state. Consider stopping the state machine instead of
- * transitioning to the final state? enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_completed_state_complete_handler(
- struct scic_sds_request *request)
-{
- if (request->was_tag_assigned_by_user != true) {
- scic_controller_free_io_tag(
- request->owning_controller, request->io_tag);
- }
-
- if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
- scic_sds_controller_release_frame(
- request->owning_controller, request->saved_rx_frame_index);
- }
-
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_FINAL);
- return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * * ABORTING STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. This method is the
- * io request aborting state abort handlers. On receipt of a multiple
- * terminate requests the io request will transition to the completed state.
- * This should not happen in normal operation. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_abort_handler(
- struct scic_sds_request *request)
-{
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- return SCI_SUCCESS;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_task_completion() request. This method
- * decodes the completion type waiting for the abort task complete
- * notification. When the abort task complete is received the io request
- * transitions to the completed state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
- case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
- );
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
-
- default:
- /*
- * Unless we get some strange error wait for the task abort to complete
- * TODO: Should there be a state change for this completion? */
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_frame_handler() request. This method
- * discards the unsolicited frame since we are waiting for the abort task
- * completion. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
-
- scic_sds_controller_release_frame(
- sci_req->owning_controller, frame_index);
-
- return SCI_SUCCESS;
-}
-
-static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
- [SCI_BASE_REQUEST_STATE_INITIAL] = {
- },
- [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
- .start_handler = scic_sds_request_constructed_state_start_handler,
- .abort_handler = scic_sds_request_constructed_state_abort_handler,
- },
- [SCI_BASE_REQUEST_STATE_STARTED] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler,
- .frame_handler = scic_sds_request_started_state_frame_handler,
- },
- [SCI_BASE_REQUEST_STATE_COMPLETED] = {
- .complete_handler = scic_sds_request_completed_state_complete_handler,
- },
- [SCI_BASE_REQUEST_STATE_ABORTING] = {
- .abort_handler = scic_sds_request_aborting_state_abort_handler,
- .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler,
- .frame_handler = scic_sds_request_aborting_state_frame_handler,
- },
- [SCI_BASE_REQUEST_STATE_FINAL] = {
- },
-};
-
-/**
- * scic_sds_request_initial_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
- * base request is constructed. Entry into the initial state sets all handlers
- * for the io request object to their default handlers. none
- */
-static void scic_sds_request_initial_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_INITIAL
- );
-}
-
-/**
- * scic_sds_request_constructed_state_enter() -
- * @object: The io request object that is to enter the constructed state.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
- * for the the constructed state. none
- */
-static void scic_sds_request_constructed_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED
- );
-}
-
-/**
- * scic_sds_request_started_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
- * SCSI Task request we must enter the started substate machine. none
- */
-static void scic_sds_request_started_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_STARTED
- );
-
- /*
- * Most of the request state machines have a started substate machine so
- * start its execution on the entry to the started state. */
- if (sci_req->has_started_substate_machine == true)
- sci_base_state_machine_start(&sci_req->started_substate_machine);
-}
-
-/**
- * scic_sds_request_started_state_exit() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
- * object.
- *
- * This method implements the actions taken when exiting the
- * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
- * to stop the started substate machine. none
- */
-static void scic_sds_request_started_state_exit(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- if (sci_req->has_started_substate_machine == true)
- sci_base_state_machine_stop(&sci_req->started_substate_machine);
-}
-
-/**
- * scic_sds_request_completed_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
- * object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the
- * SCIC_SDS_IO_REQUEST has completed. The method will decode the request
- * completion status and convert it to an enum sci_status to return in the
- * completion callback function. none
- */
-static void scic_sds_request_completed_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
- struct scic_sds_controller *scic =
- scic_sds_request_get_controller(sci_req);
- struct isci_host *ihost = scic_to_ihost(scic);
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
-
- SET_STATE_HANDLER(sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Tell the SCI_USER that the IO request is complete */
- if (sci_req->is_task_management_request == false)
- isci_request_io_request_complete(ihost,
- ireq,
- sci_req->sci_status);
- else
- isci_task_request_complete(ihost, ireq, sci_req->sci_status);
-}
-
-/**
- * scic_sds_request_aborting_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
- * object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_ABORTING state. none
- */
-static void scic_sds_request_aborting_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- /* Setting the abort bit in the Task Context is required by the silicon. */
- sci_req->task_context_buffer->abort = 1;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_ABORTING
- );
-}
-
-/**
- * scic_sds_request_final_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
- * state handlers in place. none
- */
-static void scic_sds_request_final_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_FINAL
- );
-}
-
-static const struct sci_base_state scic_sds_request_state_table[] = {
- [SCI_BASE_REQUEST_STATE_INITIAL] = {
- .enter_state = scic_sds_request_initial_state_enter,
- },
- [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
- .enter_state = scic_sds_request_constructed_state_enter,
- },
- [SCI_BASE_REQUEST_STATE_STARTED] = {
- .enter_state = scic_sds_request_started_state_enter,
- .exit_state = scic_sds_request_started_state_exit
- },
- [SCI_BASE_REQUEST_STATE_COMPLETED] = {
- .enter_state = scic_sds_request_completed_state_enter,
- },
- [SCI_BASE_REQUEST_STATE_ABORTING] = {
- .enter_state = scic_sds_request_aborting_state_enter,
- },
- [SCI_BASE_REQUEST_STATE_FINAL] = {
- .enter_state = scic_sds_request_final_state_enter,
- },
-};
-
-static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
- struct scic_sds_remote_device *sci_dev,
- u16 io_tag, struct scic_sds_request *sci_req)
-{
- sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
- scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
- sci_base_state_machine_start(&sci_req->state_machine);
-
- sci_req->io_tag = io_tag;
- sci_req->owning_controller = scic;
- sci_req->target_device = sci_dev;
- sci_req->has_started_substate_machine = false;
- sci_req->protocol = SCIC_NO_PROTOCOL;
- sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
- sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
-
- sci_req->sci_status = SCI_SUCCESS;
- sci_req->scu_status = 0;
- sci_req->post_context = 0xFFFFFFFF;
-
- sci_req->is_task_management_request = false;
-
- if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
- sci_req->was_tag_assigned_by_user = false;
- sci_req->task_context_buffer = NULL;
- } else {
- sci_req->was_tag_assigned_by_user = true;
-
- sci_req->task_context_buffer =
- scic_sds_controller_get_task_context_buffer(scic, io_tag);
- }
-}
-
-enum sci_status
-scic_io_request_construct(struct scic_sds_controller *scic,
- struct scic_sds_remote_device *sci_dev,
- u16 io_tag, struct scic_sds_request *sci_req)
-{
- struct domain_device *dev = sci_dev_to_domain(sci_dev);
- enum sci_status status = SCI_SUCCESS;
-
- /* Build the common part of the request */
- scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
-
- if (sci_dev->rnc.remote_node_index ==
- SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
- return SCI_FAILURE_INVALID_REMOTE_DEVICE;
-
- if (dev->dev_type == SAS_END_DEV)
- scic_sds_ssp_io_request_assign_buffers(sci_req);
- else if ((dev->dev_type == SATA_DEV) ||
- (dev->tproto & SAS_PROTOCOL_STP)) {
- scic_sds_stp_request_assign_buffers(sci_req);
- memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd));
- } else if (dev_is_expander(dev)) {
- scic_sds_smp_request_assign_buffers(sci_req);
- memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd));
- } else
- status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
-
- if (status == SCI_SUCCESS) {
- memset(sci_req->task_context_buffer, 0,
- offsetof(struct scu_task_context, sgl_pair_ab));
- }
-
- return status;
-}
-
-enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
- struct scic_sds_remote_device *sci_dev,
- u16 io_tag, struct scic_sds_request *sci_req)
-{
- struct domain_device *dev = sci_dev_to_domain(sci_dev);
- enum sci_status status = SCI_SUCCESS;
-
- /* Build the common part of the request */
- scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
-
- if (dev->dev_type == SAS_END_DEV) {
- scic_sds_ssp_task_request_assign_buffers(sci_req);
-
- sci_req->has_started_substate_machine = true;
-
- /* Construct the started sub-state machine. */
- sci_base_state_machine_construct(
- &sci_req->started_substate_machine,
- sci_req,
- scic_sds_io_request_started_task_mgmt_substate_table,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
- );
- } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
- scic_sds_stp_request_assign_buffers(sci_req);
- else
- status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
-
- if (status == SCI_SUCCESS) {
- sci_req->is_task_management_request = true;
- memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context));
- }
-
- return status;
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_IO_REQUEST_H_
-#define _SCIC_SDS_IO_REQUEST_H_
-
-#include "isci.h"
-#include "scic_io_request.h"
-#include "state_machine.h"
-#include "scu_task_context.h"
-#include "scic_sds_stp_request.h"
-#include "sas.h"
-
-struct scic_sds_controller;
-struct scic_sds_remote_device;
-struct scic_sds_io_request_state_handler;
-
-/**
- * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
- * depicts all of the substates for a task management request to be
- * performed in the STARTED super-state.
- *
- *
- */
-enum scic_sds_raw_request_started_task_mgmt_substates {
- /**
- * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
- * task management request is waiting for the transmission of the
- * initial frame (i.e. command, task, etc.).
- */
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
-
- /**
- * This sub-state indicates that the started task management request
- * is waiting for the reception of an unsolicited frame
- * (i.e. response IU).
- */
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
-};
-
-
-/**
- * enum _scic_sds_smp_request_started_substates - This enumeration depicts all
- * of the substates for a SMP request to be performed in the STARTED
- * super-state.
- *
- *
- */
-enum scic_sds_smp_request_started_substates {
- /**
- * This sub-state indicates that the started task management request
- * is waiting for the reception of an unsolicited frame
- * (i.e. response IU).
- */
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
-
- /**
- * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
- * waiting for the transmission of the initial frame (i.e. command, task, etc.).
- */
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
-};
-
-struct scic_sds_request {
- /**
- * This field contains the information for the base request state machine.
- */
- struct sci_base_state_machine state_machine;
-
- /**
- * This field simply points to the controller to which this IO request
- * is associated.
- */
- struct scic_sds_controller *owning_controller;
-
- /**
- * This field simply points to the remote device to which this IO request
- * is associated.
- */
- struct scic_sds_remote_device *target_device;
-
- /**
- * This field is utilized to determine if the SCI user is managing
- * the IO tag for this request or if the core is managing it.
- */
- bool was_tag_assigned_by_user;
-
- /**
- * This field indicates the IO tag for this request. The IO tag is
- * comprised of the task_index and a sequence count. The sequence count
- * is utilized to help identify tasks from one life to another.
- */
- u16 io_tag;
-
- /**
- * This field specifies the protocol being utilized for this
- * IO request.
- */
- SCIC_TRANSPORT_PROTOCOL protocol;
-
- /**
- * This field indicates the completion status taken from the SCUs
- * completion code. It indicates the completion result for the SCU hardware.
- */
- u32 scu_status;
-
- /**
- * This field indicates the completion status returned to the SCI user. It
- * indicates the users view of the io request completion.
- */
- u32 sci_status;
-
- /**
- * This field contains the value to be utilized when posting (e.g. Post_TC,
- * Post_TC_Abort) this request to the silicon.
- */
- u32 post_context;
-
- struct scu_task_context *task_context_buffer;
- struct scu_task_context tc ____cacheline_aligned;
-
- /* could be larger with sg chaining */
- #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
- struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
-
- /**
- * This field indicates if this request is a task management request or
- * normal IO request.
- */
- bool is_task_management_request;
-
- /**
- * This field indicates that this request contains an initialized started
- * substate machine.
- */
- bool has_started_substate_machine;
-
- /**
- * This field is a pointer to the stored rx frame data. It is used in STP
- * internal requests and SMP response frames. If this field is non-NULL the
- * saved frame must be released on IO request completion.
- *
- * @todo In the future do we want to keep a list of RX frame buffers?
- */
- u32 saved_rx_frame_index;
-
- /**
- * This field specifies the data necessary to manage the sub-state
- * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
- */
- struct sci_base_state_machine started_substate_machine;
-
- /**
- * This field specifies the current state handlers in place for this
- * IO Request object. This field is updated each time the request
- * changes state.
- */
- const struct scic_sds_io_request_state_handler *state_handlers;
-
- /**
- * This field in the recorded device sequence for the io request. This is
- * recorded during the build operation and is compared in the start
- * operation. If the sequence is different then there was a change of
- * devices from the build to start operations.
- */
- u8 device_sequence;
-
- union {
- struct {
- union {
- struct ssp_cmd_iu cmd;
- struct ssp_task_iu tmf;
- };
- union {
- struct ssp_response_iu rsp;
- u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
- };
- } ssp;
-
- struct {
- struct smp_req cmd;
- struct smp_resp rsp;
- } smp;
-
- struct {
- struct scic_sds_stp_request req;
- struct host_to_dev_fis cmd;
- struct dev_to_host_fis rsp;
- } stp;
- };
-
-};
-
-static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
-{
- struct scic_sds_request *sci_req;
-
- sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
- return sci_req;
-}
-
-/**
- * enum sci_base_request_states - This enumeration depicts all the states for
- * the common request state machine.
- *
- *
- */
-enum sci_base_request_states {
- /**
- * Simply the initial state for the base request state machine.
- */
- SCI_BASE_REQUEST_STATE_INITIAL,
-
- /**
- * This state indicates that the request has been constructed. This state
- * is entered from the INITIAL state.
- */
- SCI_BASE_REQUEST_STATE_CONSTRUCTED,
-
- /**
- * This state indicates that the request has been started. This state is
- * entered from the CONSTRUCTED state.
- */
- SCI_BASE_REQUEST_STATE_STARTED,
-
- /**
- * This state indicates that the request has completed.
- * This state is entered from the STARTED state. This state is entered from
- * the ABORTING state.
- */
- SCI_BASE_REQUEST_STATE_COMPLETED,
-
- /**
- * This state indicates that the request is in the process of being
- * terminated/aborted.
- * This state is entered from the CONSTRUCTED state.
- * This state is entered from the STARTED state.
- */
- SCI_BASE_REQUEST_STATE_ABORTING,
-
- /**
- * Simply the final state for the base request state machine.
- */
- SCI_BASE_REQUEST_STATE_FINAL,
-};
-
-typedef enum sci_status (*scic_sds_io_request_handler_t)
- (struct scic_sds_request *request);
-typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
- (struct scic_sds_request *req, u32 frame);
-typedef enum sci_status (*scic_sds_io_request_event_handler_t)
- (struct scic_sds_request *req, u32 event);
-typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
- (struct scic_sds_request *req, u32 completion_code);
-
-/**
- * struct scic_sds_io_request_state_handler - This is the SDS core definition
- * of the state handlers.
- *
- *
- */
-struct scic_sds_io_request_state_handler {
- /**
- * The start_handler specifies the method invoked when a user attempts to
- * start a request.
- */
- scic_sds_io_request_handler_t start_handler;
-
- /**
- * The abort_handler specifies the method invoked when a user attempts to
- * abort a request.
- */
- scic_sds_io_request_handler_t abort_handler;
-
- /**
- * The complete_handler specifies the method invoked when a user attempts to
- * complete a request.
- */
- scic_sds_io_request_handler_t complete_handler;
-
- scic_sds_io_request_task_completion_handler_t tc_completion_handler;
- scic_sds_io_request_event_handler_t event_handler;
- scic_sds_io_request_frame_handler_t frame_handler;
-
-};
-
-extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
-
-/**
- * scic_sds_request_get_controller() -
- *
- * This macro will return the controller for this io request object
- */
-#define scic_sds_request_get_controller(sci_req) \
- ((sci_req)->owning_controller)
-
-/**
- * scic_sds_request_get_device() -
- *
- * This macro will return the device for this io request object
- */
-#define scic_sds_request_get_device(sci_req) \
- ((sci_req)->target_device)
-
-/**
- * scic_sds_request_get_port() -
- *
- * This macro will return the port for this io request object
- */
-#define scic_sds_request_get_port(sci_req) \
- scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
-
-/**
- * scic_sds_request_get_post_context() -
- *
- * This macro returns the constructed post context result for the io request.
- */
-#define scic_sds_request_get_post_context(sci_req) \
- ((sci_req)->post_context)
-
-/**
- * scic_sds_request_get_task_context() -
- *
- * This is a helper macro to return the os handle for this request object.
- */
-#define scic_sds_request_get_task_context(request) \
- ((request)->task_context_buffer)
-
-/**
- * scic_sds_request_set_status() -
- *
- * This macro will set the scu hardware status and sci request completion
- * status for an io request.
- */
-#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
- { \
- (request)->scu_status = (scu_status_code); \
- (request)->sci_status = (sci_status_code); \
- }
-
-#define scic_sds_request_complete(a_request) \
- ((a_request)->state_handlers->complete_handler(a_request))
-
-
-extern enum sci_status
-scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
-
-/**
- * SCU_SGL_ZERO() -
- *
- * This macro zeros the hardware SGL element data
- */
-#define SCU_SGL_ZERO(scu_sge) \
- { \
- (scu_sge).length = 0; \
- (scu_sge).address_lower = 0; \
- (scu_sge).address_upper = 0; \
- (scu_sge).address_modifier = 0; \
- }
-
-/**
- * SCU_SGL_COPY() -
- *
- * This macro copys the SGL Element data from the host os to the hardware SGL
- * elment data
- */
-#define SCU_SGL_COPY(scu_sge, os_sge) \
- { \
- (scu_sge).length = sg_dma_len(sg); \
- (scu_sge).address_upper = \
- upper_32_bits(sg_dma_address(sg)); \
- (scu_sge).address_lower = \
- lower_32_bits(sg_dma_address(sg)); \
- (scu_sge).address_modifier = 0; \
- }
-
-/**
- * scic_sds_request_get_user_request() -
- *
- * This is a helper macro to return the os handle for this request object.
- */
-#define scic_sds_request_get_user_request(request) \
- ((request)->user_request)
-
-/*
- * *****************************************************************************
- * * CORE REQUEST PROTOTYPES
- * ***************************************************************************** */
-
-void scic_sds_request_build_sgl(
- struct scic_sds_request *sci_req);
-
-
-
-void scic_sds_stp_request_assign_buffers(
- struct scic_sds_request *sci_req);
-
-void scic_sds_smp_request_assign_buffers(
- struct scic_sds_request *sci_req);
-
-/* --------------------------------------------------------------------------- */
-
-enum sci_status scic_sds_request_start(
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_io_request_terminate(
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_io_request_complete(
- struct scic_sds_request *sci_req);
-
-void scic_sds_io_request_copy_response(
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_io_request_event_handler(
- struct scic_sds_request *sci_req,
- u32 event_code);
-
-enum sci_status scic_sds_io_request_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index);
-
-
-enum sci_status scic_sds_task_request_terminate(
- struct scic_sds_request *sci_req);
-
-/*
- * *****************************************************************************
- * * STARTED STATE HANDLERS
- * ***************************************************************************** */
-
-enum sci_status scic_sds_request_started_state_abort_handler(
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_request_started_state_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code);
-
-#endif /* _SCIC_SDS_IO_REQUEST_H_ */
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <scsi/sas.h>
-#include "state_machine.h"
-#include "remote_device.h"
-#include "scic_sds_request.h"
-#include "scic_sds_smp_request.h"
-#include "sci_util.h"
-#include "scu_completion_codes.h"
-#include "scu_task_context.h"
-#include "host.h"
-
-static void scu_smp_request_construct_task_context(
- struct scic_sds_request *sci_req,
- struct smp_req *smp_req);
-
-void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req)
-{
- if (sci_req->was_tag_assigned_by_user == false)
- sci_req->task_context_buffer = &sci_req->tc;
-}
-
-/*
- * This function will fill in the SCU Task Context for a SMP request. The
- * following important settings are utilized: -# task_type ==
- * SCU_TASK_TYPE_SMP. This simply indicates that a normal request type
- * (i.e. non-raw frame) is being utilized to perform task management. -#
- * control_frame == 1. This ensures that the proper endianess is set so
- * that the bytes are transmitted in the right order for a smp request frame.
- * @sci_req: This parameter specifies the smp request object being
- * constructed.
- *
- */
-static void
-scu_smp_request_construct_task_context(struct scic_sds_request *sci_req,
- struct smp_req *smp_req)
-{
- dma_addr_t dma_addr;
- struct scic_sds_controller *scic;
- struct scic_sds_remote_device *sci_dev;
- struct scic_sds_port *sci_port;
- struct scu_task_context *task_context;
- ssize_t word_cnt = sizeof(struct smp_req) / sizeof(u32);
-
- /* byte swap the smp request. */
- sci_swab32_cpy(&sci_req->smp.cmd, smp_req,
- word_cnt);
-
- task_context = scic_sds_request_get_task_context(sci_req);
-
- scic = scic_sds_request_get_controller(sci_req);
- sci_dev = scic_sds_request_get_device(sci_req);
- sci_port = scic_sds_request_get_port(sci_req);
-
- /*
- * Fill in the TC with the its required data
- * 00h
- */
- task_context->priority = 0;
- task_context->initiator_request = 1;
- task_context->connection_rate = sci_dev->connection_rate;
- task_context->protocol_engine_index =
- scic_sds_controller_get_protocol_engine_group(scic);
- task_context->logical_port_index = scic_sds_port_get_index(sci_port);
- task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SMP;
- task_context->abort = 0;
- task_context->valid = SCU_TASK_CONTEXT_VALID;
- task_context->context_type = SCU_TASK_CONTEXT_TYPE;
-
- /* 04h */
- task_context->remote_node_index = sci_dev->rnc.remote_node_index;
- task_context->command_code = 0;
- task_context->task_type = SCU_TASK_TYPE_SMP_REQUEST;
-
- /* 08h */
- task_context->link_layer_control = 0;
- task_context->do_not_dma_ssp_good_response = 1;
- task_context->strict_ordering = 0;
- task_context->control_frame = 1;
- task_context->timeout_enable = 0;
- task_context->block_guard_enable = 0;
-
- /* 0ch */
- task_context->address_modifier = 0;
-
- /* 10h */
- task_context->ssp_command_iu_length = smp_req->req_len;
-
- /* 14h */
- task_context->transfer_length_bytes = 0;
-
- /*
- * 18h ~ 30h, protocol specific
- * since commandIU has been build by framework at this point, we just
- * copy the frist DWord from command IU to this location. */
- memcpy(&task_context->type.smp, &sci_req->smp.cmd, sizeof(u32));
-
- /*
- * 40h
- * "For SMP you could program it to zero. We would prefer that way
- * so that done code will be consistent." - Venki
- */
- task_context->task_phase = 0;
-
- if (sci_req->was_tag_assigned_by_user) {
- /*
- * Build the task context now since we have already read
- * the data
- */
- sci_req->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(scic) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(sci_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
- scic_sds_io_tag_get_index(sci_req->io_tag));
- } else {
- /*
- * Build the task context now since we have already read
- * the data.
- * I/O tag index is not assigned because we have to wait
- * until we get a TCi.
- */
- sci_req->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(scic) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(sci_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
- }
-
- /*
- * Copy the physical address for the command buffer to the SCU Task
- * Context command buffer should not contain command header.
- */
- dma_addr = scic_io_request_get_dma_addr(sci_req,
- ((char *) &sci_req->smp.cmd) +
- sizeof(u32));
-
- task_context->command_iu_upper = upper_32_bits(dma_addr);
- task_context->command_iu_lower = lower_32_bits(dma_addr);
-
- /* SMP response comes as UF, so no need to set response IU address. */
- task_context->response_iu_upper = 0;
- task_context->response_iu_lower = 0;
-}
-
-/*
- * This function processes an unsolicited frame while the SMP request is waiting
- * for a response frame. It will copy the response data, release the
- * unsolicited frame, and transition the request to the
- * SCI_BASE_REQUEST_STATE_COMPLETED state.
- * @sci_req: This parameter specifies the request for which the
- * unsolicited frame was received.
- * @frame_index: This parameter indicates the unsolicited frame index that
- * should contain the response.
- *
- * This function returns an indication of whether the response frame was handled
- * successfully or not. SCI_SUCCESS Currently this value is always returned and
- * indicates successful processing of the TC response.
- */
-static enum sci_status
-scic_sds_smp_request_await_response_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- void *frame_header;
- struct smp_resp *rsp_hdr = &sci_req->smp.rsp;
- ssize_t word_cnt = SMP_RESP_HDR_SZ / sizeof(u32);
-
- status = scic_sds_unsolicited_frame_control_get_header(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- &frame_header);
-
- /* byte swap the header. */
- sci_swab32_cpy(rsp_hdr, frame_header, word_cnt);
-
- if (rsp_hdr->frame_type == SMP_RESPONSE) {
- void *smp_resp;
-
- status = scic_sds_unsolicited_frame_control_get_buffer(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- &smp_resp);
-
- word_cnt = (sizeof(struct smp_req) - SMP_RESP_HDR_SZ) /
- sizeof(u32);
-
- sci_swab32_cpy(((u8 *) rsp_hdr) + SMP_RESP_HDR_SZ,
- smp_resp, word_cnt);
-
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION);
- } else {
- /* This was not a response frame why did it get forwarded? */
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: SCIC SMP Request 0x%p received unexpected frame "
- "%d type 0x%02x\n",
- __func__,
- sci_req,
- frame_index,
- rsp_hdr->frame_type);
-
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_SMP_FRM_TYPE_ERR,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- }
-
- scic_sds_controller_release_frame(sci_req->owning_controller,
- frame_index);
-
- return SCI_SUCCESS;
-}
-
-
-/**
- * This method processes an abnormal TC completion while the SMP request is
- * waiting for a response frame. It decides what happened to the IO based
- * on TC completion status.
- * @sci_req: This parameter specifies the request for which the TC
- * completion was received.
- * @completion_code: This parameter indicates the completion status information
- * for the TC.
- *
- * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
- * this method always returns success.
- */
-static enum sci_status scic_sds_smp_request_await_response_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- /*
- * In the AWAIT RESPONSE state, any TC completion is unexpected.
- * but if the TC has success status, we complete the IO anyway. */
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
- /*
- * These status has been seen in a specific LSI expander, which sometimes
- * is not able to send smp response within 2 ms. This causes our hardware
- * break the connection and set TC completion with one of these SMP_XXX_XX_ERR
- * status. For these type of error, we ask scic user to retry the request. */
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_SMP_RESP_TO_ERR, SCI_FAILURE_RETRY_REQUIRED
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-
-/**
- * This method processes the completions transport layer (TL) status to
- * determine if the SMP request was sent successfully. If the SMP request
- * was sent successfully, then the state for the SMP request transits to
- * waiting for a response frame.
- * @sci_req: This parameter specifies the request for which the TC
- * completion was received.
- * @completion_code: This parameter indicates the completion status information
- * for the TC.
- *
- * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
- * this method always returns success.
- */
-static enum sci_status scic_sds_smp_request_await_tc_completion_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-
-static const struct scic_sds_io_request_state_handler scic_sds_smp_request_started_substate_handler_table[] = {
- [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_smp_request_await_response_tc_completion_handler,
- .frame_handler = scic_sds_smp_request_await_response_frame_handler,
- },
- [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_smp_request_await_tc_completion_tc_completion_handler,
- }
-};
-
-/**
- * This method performs the actions required when entering the
- * SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state. This
- * includes setting the IO request state handlers for this sub-state.
- * @object: This parameter specifies the request object for which the sub-state
- * change is occurring.
- *
- * none.
- */
-static void scic_sds_smp_request_started_await_response_substate_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_smp_request_started_substate_handler_table,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
- );
-}
-
-/**
- * This method performs the actions required when entering the
- * SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION sub-state.
- * This includes setting the SMP request state handlers for this sub-state.
- * @object: This parameter specifies the request object for which the sub-state
- * change is occurring.
- *
- * none.
- */
-static void scic_sds_smp_request_started_await_tc_completion_substate_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_smp_request_started_substate_handler_table,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
- );
-}
-
-static const struct sci_base_state scic_sds_smp_request_started_substate_table[] = {
- [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = {
- .enter_state = scic_sds_smp_request_started_await_response_substate_enter,
- },
- [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .enter_state = scic_sds_smp_request_started_await_tc_completion_substate_enter,
- },
-};
-
-/**
- * This method is called by the SCI user to build an SMP IO request.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the SMP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req)
-{
- struct smp_req *smp_req = kmalloc(sizeof(*smp_req), GFP_KERNEL);
-
- if (!smp_req)
- return SCI_FAILURE_INSUFFICIENT_RESOURCES;
-
- sci_req->protocol = SCIC_SMP_PROTOCOL;
- sci_req->has_started_substate_machine = true;
-
- /* Construct the started sub-state machine. */
- sci_base_state_machine_construct(
- &sci_req->started_substate_machine,
- sci_req,
- scic_sds_smp_request_started_substate_table,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
- );
-
- /* Construct the SMP SCU Task Context */
- memcpy(smp_req, &sci_req->smp.cmd, sizeof(*smp_req));
-
- /*
- * Look at the SMP requests' header fields; for certain SAS 1.x SMP
- * functions under SAS 2.0, a zero request length really indicates
- * a non-zero default length. */
- if (smp_req->req_len == 0) {
- switch (smp_req->func) {
- case SMP_DISCOVER:
- case SMP_REPORT_PHY_ERR_LOG:
- case SMP_REPORT_PHY_SATA:
- case SMP_REPORT_ROUTE_INFO:
- smp_req->req_len = 2;
- break;
- case SMP_CONF_ROUTE_INFO:
- case SMP_PHY_CONTROL:
- case SMP_PHY_TEST_FUNCTION:
- smp_req->req_len = 9;
- break;
- /* Default - zero is a valid default for 2.0. */
- }
- }
-
- scu_smp_request_construct_task_context(sci_req, smp_req);
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
- kfree(smp_req);
-
- return SCI_SUCCESS;
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef _SCIC_SDS_SMP_REQUEST_T_
-#define _SCIC_SDS_SMP_REQUEST_T_
-
-#include "scic_sds_request.h"
-
-
-u32 scic_sds_smp_request_get_object_size(void);
-
-
-void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
-
-#endif /* _SCIC_SDS_SMP_REQUEST_T_ */
-
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "host.h"
-#include "state_machine.h"
-#include "scic_sds_request.h"
-#include "scu_completion_codes.h"
-#include "scu_task_context.h"
-
-/**
- * This method processes the completions transport layer (TL) status to
- * determine if the RAW task management frame was sent successfully. If the
- * raw frame was sent successfully, then the state for the task request
- * transitions to waiting for a response frame.
- * @sci_req: This parameter specifies the request for which the TC
- * completion was received.
- * @completion_code: This parameter indicates the completion status information
- * for the TC.
- *
- * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
- * this method always returns success.
- */
-static enum sci_status scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
- );
- break;
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
- /*
- * Currently, the decision is to simply allow the task request to
- * timeout if the task IU wasn't received successfully.
- * There is a potential for receiving multiple task responses if we
- * decide to send the task IU again. */
- dev_warn(scic_to_dev(sci_req->owning_controller),
- "%s: TaskRequest:0x%p CompletionCode:%x - "
- "ACK/NAK timeout\n",
- __func__,
- sci_req,
- completion_code);
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- * This method is responsible for processing a terminate/abort request for this
- * TC while the request is waiting for the task management response
- * unsolicited frame.
- * @sci_req: This parameter specifies the request for which the
- * termination was requested.
- *
- * This method returns an indication as to whether the abort request was
- * successfully handled. need to update to ensure the received UF doesn't cause
- * damage to subsequent requests (i.e. put the extended tag in a holding
- * pattern for this particular device).
- */
-static enum sci_status scic_sds_ssp_task_request_await_tc_response_abort_handler(
- struct scic_sds_request *request)
-{
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_ABORTING);
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- return SCI_SUCCESS;
-}
-
-/**
- * This method processes an unsolicited frame while the task mgmt request is
- * waiting for a response frame. It will copy the response data, release
- * the unsolicited frame, and transition the request to the
- * SCI_BASE_REQUEST_STATE_COMPLETED state.
- * @sci_req: This parameter specifies the request for which the
- * unsolicited frame was received.
- * @frame_index: This parameter indicates the unsolicited frame index that
- * should contain the response.
- *
- * This method returns an indication of whether the TC response frame was
- * handled successfully or not. SCI_SUCCESS Currently this value is always
- * returned and indicates successful processing of the TC response. Should
- * probably update to check frame type and make sure it is a response frame.
- */
-static enum sci_status scic_sds_ssp_task_request_await_tc_response_frame_handler(
- struct scic_sds_request *request,
- u32 frame_index)
-{
- scic_sds_io_request_copy_response(request);
-
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- scic_sds_controller_release_frame(request->owning_controller,
- frame_index);
- return SCI_SUCCESS;
-}
-
-static const struct scic_sds_io_request_state_handler scic_sds_ssp_task_request_started_substate_handler_table[] = {
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler,
- },
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE] = {
- .abort_handler = scic_sds_ssp_task_request_await_tc_response_abort_handler,
- .frame_handler = scic_sds_ssp_task_request_await_tc_response_frame_handler,
- }
-};
-
-/**
- * This method performs the actions required when entering the
- * SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
- * sub-state. This includes setting the IO request state handlers for this
- * sub-state.
- * @object: This parameter specifies the request object for which the sub-state
- * change is occurring.
- *
- * none.
- */
-static void scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_ssp_task_request_started_substate_handler_table,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
- );
-}
-
-/**
- * This method performs the actions required when entering the
- * SCIC_SDS_IO_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state. This
- * includes setting the IO request state handlers for this sub-state.
- * @object: This parameter specifies the request object for which the sub-state
- * change is occurring.
- *
- * none.
- */
-static void scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_ssp_task_request_started_substate_handler_table,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
- );
-}
-
-const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[] = {
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .enter_state = scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter,
- },
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE] = {
- .enter_state = scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter,
- },
-};
-
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef _SCIC_SDS_STP_PACKET_REQUEST_H_
-#define _SCIC_SDS_STP_PACKET_REQUEST_H_
-
-#include "scic_sds_stp_request.h"
-
-/**
- * This file contains the structures and constants for PACKET protocol requests.
- *
- *
- */
-
-
-/**
- *
- *
- * This is the enumeration of the SATA PIO DATA IN started substate machine.
- */
-enum _scic_sds_stp_packet_request_started_substates {
- /**
- * While in this state the IO request object is waiting for the TC completion
- * notification for the H2D Register FIS
- */
- SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting for either a PIO Setup.
- */
- SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_PIO_SETUP_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting for TC completion for
- * the Packet DMA DATA fis or Raw Frame.
- */
- SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
-
- /**
- * The non-data IO transit to this state in this state after receiving TC
- * completion. While in this state IO request object is waiting for D2H status
- * frame as UF.
- */
- SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_D2H_FIS_SUBSTATE,
-
- /**
- * The IO transit to this state in this state if the previous TC completion status
- * is not success and the atapi device is suspended due to target device failed the IO.
- * While in this state IO request object is waiting for device coming out of the
- * suspension state then complete the IO.
- */
- SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMPLETION_DELAY_SUBSTATE,
-};
-
-#define scic_sds_stp_packet_request_construct(request) SCI_FAILURE
-#define scu_stp_packet_request_command_phase_construct_task_context(reqeust, tc)
-#define scu_stp_packet_request_command_phase_reconstruct_raw_frame_task_context(reqeust, tc)
-#define scic_sds_stp_packet_request_process_status_fis(reqeust, fis) SCI_FAILURE
-#define scic_sds_stp_packet_internal_request_sense_build_sgl(request)
-
-#endif /* _SCIC_SDS_STP_PACKET_REQUEST_H_ */
-
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
-#define _SCIC_SDS_SATA_PIO_REQUEST_H_
-
-#include "scic_sds_request.h"
-#include "scu_task_context.h"
-
-/**
- * This file contains the structures and constants for SATA PIO requests.
- *
- *
- */
-
-
-/**
- *
- *
- * This is the enumeration of the SATA PIO DATA IN started substate machine.
- */
-enum _scic_sds_stp_request_started_pio_substates {
- /**
- * While in this state the IO request object is waiting for the TC completion
- * notification for the H2D Register FIS
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting for either a PIO Setup
- * FIS or a D2H register FIS. The type of frame received is based on the
- * result of the prior frame and line conditions.
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting for a DATA frame from
- * the device.
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting to transmit the next data
- * frame to the device.
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
-};
-
-struct scic_sds_stp_request;
-
-
-#endif /* _SCIC_SDS_SATA_PIO_REQUEST_H_ */
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <scsi/sas.h>
-#include "sas.h"
-#include "state_machine.h"
-#include "scic_io_request.h"
-#include "remote_device.h"
-#include "scic_sds_request.h"
-#include "scic_sds_stp_pio_request.h"
-#include "scic_sds_stp_request.h"
-#include "unsolicited_frame_control.h"
-#include "sci_util.h"
-#include "scu_completion_codes.h"
-#include "scu_event_codes.h"
-#include "scu_task_context.h"
-#include "request.h"
-
-void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req)
-{
- if (sci_req->was_tag_assigned_by_user == false)
- sci_req->task_context_buffer = &sci_req->tc;
-}
-
-/**
- * This method is will fill in the SCU Task Context for any type of SATA
- * request. This is called from the various SATA constructors.
- * @sci_req: The general IO request object which is to be used in
- * constructing the SCU task context.
- * @task_context: The buffer pointer for the SCU task context which is being
- * constructed.
- *
- * The general io request construction is complete. The buffer assignment for
- * the command buffer is complete. none Revisit task context construction to
- * determine what is common for SSP/SMP/STP task context structures.
- */
-static void scu_sata_reqeust_construct_task_context(
- struct scic_sds_request *sci_req,
- struct scu_task_context *task_context)
-{
- dma_addr_t dma_addr;
- struct scic_sds_controller *controller;
- struct scic_sds_remote_device *target_device;
- struct scic_sds_port *target_port;
-
- controller = scic_sds_request_get_controller(sci_req);
- target_device = scic_sds_request_get_device(sci_req);
- target_port = scic_sds_request_get_port(sci_req);
-
- /* Fill in the TC with the its required data */
- task_context->abort = 0;
- task_context->priority = SCU_TASK_PRIORITY_NORMAL;
- task_context->initiator_request = 1;
- task_context->connection_rate = target_device->connection_rate;
- task_context->protocol_engine_index =
- scic_sds_controller_get_protocol_engine_group(controller);
- task_context->logical_port_index =
- scic_sds_port_get_index(target_port);
- task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_STP;
- task_context->valid = SCU_TASK_CONTEXT_VALID;
- task_context->context_type = SCU_TASK_CONTEXT_TYPE;
-
- task_context->remote_node_index =
- scic_sds_remote_device_get_index(sci_req->target_device);
- task_context->command_code = 0;
-
- task_context->link_layer_control = 0;
- task_context->do_not_dma_ssp_good_response = 1;
- task_context->strict_ordering = 0;
- task_context->control_frame = 0;
- task_context->timeout_enable = 0;
- task_context->block_guard_enable = 0;
-
- task_context->address_modifier = 0;
- task_context->task_phase = 0x01;
-
- task_context->ssp_command_iu_length =
- (sizeof(struct host_to_dev_fis) - sizeof(u32)) / sizeof(u32);
-
- /* Set the first word of the H2D REG FIS */
- task_context->type.words[0] = *(u32 *)&sci_req->stp.cmd;
-
- if (sci_req->was_tag_assigned_by_user) {
- /*
- * Build the task context now since we have already read
- * the data
- */
- sci_req->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(
- controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
- scic_sds_io_tag_get_index(sci_req->io_tag));
- } else {
- /*
- * Build the task context now since we have already read
- * the data.
- * I/O tag index is not assigned because we have to wait
- * until we get a TCi.
- */
- sci_req->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(
- controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
- }
-
- /*
- * Copy the physical address for the command buffer to the SCU Task
- * Context. We must offset the command buffer by 4 bytes because the
- * first 4 bytes are transfered in the body of the TC.
- */
- dma_addr = scic_io_request_get_dma_addr(sci_req,
- ((char *) &sci_req->stp.cmd) +
- sizeof(u32));
-
- task_context->command_iu_upper = upper_32_bits(dma_addr);
- task_context->command_iu_lower = lower_32_bits(dma_addr);
-
- /* SATA Requests do not have a response buffer */
- task_context->response_iu_upper = 0;
- task_context->response_iu_lower = 0;
-}
-
-/**
- *
- * @sci_req:
- *
- * This method will perform any general sata request construction. What part of
- * SATA IO request construction is general? none
- */
-static void scic_sds_stp_non_ncq_request_construct(
- struct scic_sds_request *sci_req)
-{
- sci_req->has_started_substate_machine = true;
-}
-
-/**
- *
- * @sci_req: This parameter specifies the request to be constructed as an
- * optimized request.
- * @optimized_task_type: This parameter specifies whether the request is to be
- * an UDMA request or a NCQ request. - A value of 0 indicates UDMA. - A
- * value of 1 indicates NCQ.
- *
- * This method will perform request construction common to all types of STP
- * requests that are optimized by the silicon (i.e. UDMA, NCQ). This method
- * returns an indication as to whether the construction was successful.
- */
-static void scic_sds_stp_optimized_request_construct(struct scic_sds_request *sci_req,
- u8 optimized_task_type,
- u32 len,
- enum dma_data_direction dir)
-{
- struct scu_task_context *task_context = sci_req->task_context_buffer;
-
- /* Build the STP task context structure */
- scu_sata_reqeust_construct_task_context(sci_req, task_context);
-
- /* Copy over the SGL elements */
- scic_sds_request_build_sgl(sci_req);
-
- /* Copy over the number of bytes to be transfered */
- task_context->transfer_length_bytes = len;
-
- if (dir == DMA_TO_DEVICE) {
- /*
- * The difference between the DMA IN and DMA OUT request task type
- * values are consistent with the difference between FPDMA READ
- * and FPDMA WRITE values. Add the supplied task type parameter
- * to this difference to set the task type properly for this
- * DATA OUT (WRITE) case. */
- task_context->task_type = optimized_task_type + (SCU_TASK_TYPE_DMA_OUT
- - SCU_TASK_TYPE_DMA_IN);
- } else {
- /*
- * For the DATA IN (READ) case, simply save the supplied
- * optimized task type. */
- task_context->task_type = optimized_task_type;
- }
-}
-
-/**
- *
- * @sci_req: This parameter specifies the request to be constructed.
- *
- * This method will construct the STP UDMA request and its associated TC data.
- * This method returns an indication as to whether the construction was
- * successful. SCI_SUCCESS Currently this method always returns this value.
- */
-enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
- u32 len,
- enum dma_data_direction dir)
-{
- scic_sds_stp_optimized_request_construct(sci_req,
- SCU_TASK_TYPE_FPDMAQ_READ,
- len, dir);
- return SCI_SUCCESS;
-}
-
-/**
- * scu_stp_raw_request_construct_task_context -
- * @sci_req: This parameter specifies the STP request object for which to
- * construct a RAW command frame task context.
- * @task_context: This parameter specifies the SCU specific task context buffer
- * to construct.
- *
- * This method performs the operations common to all SATA/STP requests
- * utilizing the raw frame method. none
- */
-static void scu_stp_raw_request_construct_task_context(
- struct scic_sds_stp_request *stp_req,
- struct scu_task_context *task_context)
-{
- struct scic_sds_request *sci_req = to_sci_req(stp_req);
-
- scu_sata_reqeust_construct_task_context(sci_req, task_context);
-
- task_context->control_frame = 0;
- task_context->priority = SCU_TASK_PRIORITY_NORMAL;
- task_context->task_type = SCU_TASK_TYPE_SATA_RAW_FRAME;
- task_context->type.stp.fis_type = FIS_REGH2D;
- task_context->transfer_length_bytes = sizeof(struct host_to_dev_fis) - sizeof(u32);
-}
-
-void scic_stp_io_request_set_ncq_tag(
- struct scic_sds_request *req,
- u16 ncq_tag)
-{
- /**
- * @note This could be made to return an error to the user if the user
- * attempts to set the NCQ tag in the wrong state.
- */
- req->task_context_buffer->type.stp.ncq_tag = ncq_tag;
-}
-
-/**
- *
- * @sci_req:
- *
- * Get the next SGL element from the request. - Check on which SGL element pair
- * we are working - if working on SLG pair element A - advance to element B -
- * else - check to see if there are more SGL element pairs for this IO request
- * - if there are more SGL element pairs - advance to the next pair and return
- * element A struct scu_sgl_element*
- */
-static struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl(struct scic_sds_stp_request *stp_req)
-{
- struct scu_sgl_element *current_sgl;
- struct scic_sds_request *sci_req = to_sci_req(stp_req);
- struct scic_sds_request_pio_sgl *pio_sgl = &stp_req->type.pio.request_current;
-
- if (pio_sgl->sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
- if (pio_sgl->sgl_pair->B.address_lower == 0 &&
- pio_sgl->sgl_pair->B.address_upper == 0) {
- current_sgl = NULL;
- } else {
- pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_B;
- current_sgl = &pio_sgl->sgl_pair->B;
- }
- } else {
- if (pio_sgl->sgl_pair->next_pair_lower == 0 &&
- pio_sgl->sgl_pair->next_pair_upper == 0) {
- current_sgl = NULL;
- } else {
- u64 phys_addr;
-
- phys_addr = pio_sgl->sgl_pair->next_pair_upper;
- phys_addr <<= 32;
- phys_addr |= pio_sgl->sgl_pair->next_pair_lower;
-
- pio_sgl->sgl_pair = scic_request_get_virt_addr(sci_req, phys_addr);
- pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_A;
- current_sgl = &pio_sgl->sgl_pair->A;
- }
- }
-
- return current_sgl;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * This method processes a TC completion. The expected TC completion is for
- * the transmission of the H2D register FIS containing the SATA/STP non-data
- * request. This method always successfully processes the TC completion.
- * SCI_SUCCESS This value is always returned.
- */
-static enum sci_status scic_sds_stp_request_non_data_await_h2d_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @request: This parameter specifies the request for which a frame has been
- * received.
- * @frame_index: This parameter specifies the index of the frame that has been
- * received.
- *
- * This method processes frames received from the target while waiting for a
- * device to host register FIS. If a non-register FIS is received during this
- * time, it is treated as a protocol violation from an IO perspective. Indicate
- * if the received frame was processed successfully.
- */
-static enum sci_status scic_sds_stp_request_non_data_await_d2h_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- struct dev_to_host_fis *frame_header;
- u32 *frame_buffer;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_controller *scic = sci_req->owning_controller;
-
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
-
- if (status != SCI_SUCCESS) {
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: SCIC IO Request 0x%p could not get frame header "
- "for frame index %d, status %x\n",
- __func__, stp_req, frame_index, status);
-
- return status;
- }
-
- switch (frame_header->fis_type) {
- case FIS_REGD2H:
- scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
- frame_index,
- (void **)&frame_buffer);
-
- scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
- frame_header,
- frame_buffer);
-
- /* The command has completed with error */
- scic_sds_request_set_status(sci_req, SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
- break;
-
- default:
- dev_warn(scic_to_dev(scic),
- "%s: IO Request:0x%p Frame Id:%d protocol "
- "violation occurred\n", __func__, stp_req,
- frame_index);
-
- scic_sds_request_set_status(sci_req, SCU_TASK_DONE_UNEXP_FIS,
- SCI_FAILURE_PROTOCOL_VIOLATION);
- break;
- }
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Frame has been decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_non_data_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_non_data_await_h2d_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_non_data_await_d2h_frame_handler,
- }
-};
-
-static void scic_sds_stp_request_started_non_data_await_h2d_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_non_data_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE
- );
-
- scic_sds_remote_device_set_working_request(
- sci_req->target_device, sci_req
- );
-}
-
-static void scic_sds_stp_request_started_non_data_await_d2h_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_non_data_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
- );
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_stp_request_started_non_data_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_non_data_await_h2d_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_non_data_await_d2h_enter,
- },
-};
-
-enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req)
-{
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
-
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- /* Build the STP task context structure */
- scu_stp_raw_request_construct_task_context(stp_req, sci_req->task_context_buffer);
-
- sci_base_state_machine_construct(&sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_non_data_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE);
-
- return SCI_SUCCESS;
-}
-
-#define SCU_MAX_FRAME_BUFFER_SIZE 0x400 /* 1K is the maximum SCU frame data payload */
-
-/* transmit DATA_FIS from (current sgl + offset) for input
- * parameter length. current sgl and offset is alreay stored in the IO request
- */
-static enum sci_status scic_sds_stp_request_pio_data_out_trasmit_data_frame(
- struct scic_sds_request *sci_req,
- u32 length)
-{
- struct scic_sds_controller *scic = sci_req->owning_controller;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scu_task_context *task_context;
- struct scu_sgl_element *current_sgl;
-
- /* Recycle the TC and reconstruct it for sending out DATA FIS containing
- * for the data from current_sgl+offset for the input length
- */
- task_context = scic_sds_controller_get_task_context_buffer(scic,
- sci_req->io_tag);
-
- if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A)
- current_sgl = &stp_req->type.pio.request_current.sgl_pair->A;
- else
- current_sgl = &stp_req->type.pio.request_current.sgl_pair->B;
-
- /* update the TC */
- task_context->command_iu_upper = current_sgl->address_upper;
- task_context->command_iu_lower = current_sgl->address_lower;
- task_context->transfer_length_bytes = length;
- task_context->type.stp.fis_type = FIS_DATA;
-
- /* send the new TC out. */
- return scic_controller_continue_io(sci_req);
-}
-
-static enum sci_status scic_sds_stp_request_pio_data_out_transmit_data(struct scic_sds_request *sci_req)
-{
-
- struct scu_sgl_element *current_sgl;
- u32 sgl_offset;
- u32 remaining_bytes_in_current_sgl = 0;
- enum sci_status status = SCI_SUCCESS;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
-
- sgl_offset = stp_req->type.pio.request_current.sgl_offset;
-
- if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
- current_sgl = &(stp_req->type.pio.request_current.sgl_pair->A);
- remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->A.length - sgl_offset;
- } else {
- current_sgl = &(stp_req->type.pio.request_current.sgl_pair->B);
- remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->B.length - sgl_offset;
- }
-
-
- if (stp_req->type.pio.pio_transfer_bytes > 0) {
- if (stp_req->type.pio.pio_transfer_bytes >= remaining_bytes_in_current_sgl) {
- /* recycle the TC and send the H2D Data FIS from (current sgl + sgl_offset) and length = remaining_bytes_in_current_sgl */
- status = scic_sds_stp_request_pio_data_out_trasmit_data_frame(sci_req, remaining_bytes_in_current_sgl);
- if (status == SCI_SUCCESS) {
- stp_req->type.pio.pio_transfer_bytes -= remaining_bytes_in_current_sgl;
-
- /* update the current sgl, sgl_offset and save for future */
- current_sgl = scic_sds_stp_request_pio_get_next_sgl(stp_req);
- sgl_offset = 0;
- }
- } else if (stp_req->type.pio.pio_transfer_bytes < remaining_bytes_in_current_sgl) {
- /* recycle the TC and send the H2D Data FIS from (current sgl + sgl_offset) and length = type.pio.pio_transfer_bytes */
- scic_sds_stp_request_pio_data_out_trasmit_data_frame(sci_req, stp_req->type.pio.pio_transfer_bytes);
-
- if (status == SCI_SUCCESS) {
- /* Sgl offset will be adjusted and saved for future */
- sgl_offset += stp_req->type.pio.pio_transfer_bytes;
- current_sgl->address_lower += stp_req->type.pio.pio_transfer_bytes;
- stp_req->type.pio.pio_transfer_bytes = 0;
- }
- }
- }
-
- if (status == SCI_SUCCESS) {
- stp_req->type.pio.request_current.sgl_offset = sgl_offset;
- }
-
- return status;
-}
-
-/**
- *
- * @stp_request: The request that is used for the SGL processing.
- * @data_buffer: The buffer of data to be copied.
- * @length: The length of the data transfer.
- *
- * Copy the data from the buffer for the length specified to the IO reqeust SGL
- * specified data region. enum sci_status
- */
-static enum sci_status
-scic_sds_stp_request_pio_data_in_copy_data_buffer(struct scic_sds_stp_request *stp_req,
- u8 *data_buf, u32 len)
-{
- struct scic_sds_request *sci_req;
- struct isci_request *ireq;
- u8 *src_addr;
- int copy_len;
- struct sas_task *task;
- struct scatterlist *sg;
- void *kaddr;
- int total_len = len;
-
- sci_req = to_sci_req(stp_req);
- ireq = sci_req_to_ireq(sci_req);
- task = isci_request_access_task(ireq);
- src_addr = data_buf;
-
- if (task->num_scatter > 0) {
- sg = task->scatter;
-
- while (total_len > 0) {
- struct page *page = sg_page(sg);
-
- copy_len = min_t(int, total_len, sg_dma_len(sg));
- kaddr = kmap_atomic(page, KM_IRQ0);
- memcpy(kaddr + sg->offset, src_addr, copy_len);
- kunmap_atomic(kaddr, KM_IRQ0);
- total_len -= copy_len;
- src_addr += copy_len;
- sg = sg_next(sg);
- }
- } else {
- BUG_ON(task->total_xfer_len < total_len);
- memcpy(task->scatter, src_addr, total_len);
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @sci_req: The PIO DATA IN request that is to receive the data.
- * @data_buffer: The buffer to copy from.
- *
- * Copy the data buffer to the io request data region. enum sci_status
- */
-static enum sci_status scic_sds_stp_request_pio_data_in_copy_data(
- struct scic_sds_stp_request *sci_req,
- u8 *data_buffer)
-{
- enum sci_status status;
-
- /*
- * If there is less than 1K remaining in the transfer request
- * copy just the data for the transfer */
- if (sci_req->type.pio.pio_transfer_bytes < SCU_MAX_FRAME_BUFFER_SIZE) {
- status = scic_sds_stp_request_pio_data_in_copy_data_buffer(
- sci_req, data_buffer, sci_req->type.pio.pio_transfer_bytes);
-
- if (status == SCI_SUCCESS)
- sci_req->type.pio.pio_transfer_bytes = 0;
- } else {
- /* We are transfering the whole frame so copy */
- status = scic_sds_stp_request_pio_data_in_copy_data_buffer(
- sci_req, data_buffer, SCU_MAX_FRAME_BUFFER_SIZE);
-
- if (status == SCI_SUCCESS)
- sci_req->type.pio.pio_transfer_bytes -= SCU_MAX_FRAME_BUFFER_SIZE;
- }
-
- return status;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * enum sci_status
- */
-static enum sci_status scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- enum sci_status status = SCI_SUCCESS;
-
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED
- );
- break;
- }
-
- return status;
-}
-
-static enum sci_status scic_sds_stp_request_pio_await_frame_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- struct scic_sds_controller *scic = sci_req->owning_controller;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct isci_request *ireq = sci_req_to_ireq(sci_req);
- struct sas_task *task = isci_request_access_task(ireq);
- struct dev_to_host_fis *frame_header;
- enum sci_status status;
- u32 *frame_buffer;
-
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
-
- if (status != SCI_SUCCESS) {
- dev_err(scic_to_dev(scic),
- "%s: SCIC IO Request 0x%p could not get frame header "
- "for frame index %d, status %x\n",
- __func__, stp_req, frame_index, status);
- return status;
- }
-
- switch (frame_header->fis_type) {
- case FIS_PIO_SETUP:
- /* Get from the frame buffer the PIO Setup Data */
- scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
- frame_index,
- (void **)&frame_buffer);
-
- /* Get the data from the PIO Setup The SCU Hardware returns
- * first word in the frame_header and the rest of the data is in
- * the frame buffer so we need to back up one dword
- */
-
- /* transfer_count: first 16bits in the 4th dword */
- stp_req->type.pio.pio_transfer_bytes = frame_buffer[3] & 0xffff;
-
- /* ending_status: 4th byte in the 3rd dword */
- stp_req->type.pio.ending_status = (frame_buffer[2] >> 24) & 0xff;
-
- scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
- frame_header,
- frame_buffer);
-
- sci_req->stp.rsp.status = stp_req->type.pio.ending_status;
-
- /* The next state is dependent on whether the
- * request was PIO Data-in or Data out
- */
- if (task->data_dir == DMA_FROM_DEVICE) {
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE);
- } else if (task->data_dir == DMA_TO_DEVICE) {
- /* Transmit data */
- status = scic_sds_stp_request_pio_data_out_transmit_data(sci_req);
- if (status != SCI_SUCCESS)
- break;
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE);
- }
- break;
- case FIS_SETDEVBITS:
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
- break;
- case FIS_REGD2H:
- if (frame_header->status & ATA_BUSY) {
- /* Now why is the drive sending a D2H Register FIS when
- * it is still busy? Do nothing since we are still in
- * the right state.
- */
- dev_dbg(scic_to_dev(scic),
- "%s: SCIC PIO Request 0x%p received "
- "D2H Register FIS with BSY status "
- "0x%x\n", __func__, stp_req,
- frame_header->status);
- break;
- }
-
- scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
- frame_index,
- (void **)&frame_buffer);
-
- scic_sds_controller_copy_sata_response(&sci_req->stp.req,
- frame_header,
- frame_buffer);
-
- scic_sds_request_set_status(sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- default:
- /* FIXME: what do we do here? */
- break;
- }
-
- /* Frame is decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-static enum sci_status scic_sds_stp_request_pio_data_in_await_data_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- struct dev_to_host_fis *frame_header;
- struct sata_fis_data *frame_buffer;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_controller *scic = sci_req->owning_controller;
-
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
-
- if (status != SCI_SUCCESS) {
- dev_err(scic_to_dev(scic),
- "%s: SCIC IO Request 0x%p could not get frame header "
- "for frame index %d, status %x\n",
- __func__, stp_req, frame_index, status);
- return status;
- }
-
- if (frame_header->fis_type == FIS_DATA) {
- if (stp_req->type.pio.request_current.sgl_pair == NULL) {
- sci_req->saved_rx_frame_index = frame_index;
- stp_req->type.pio.pio_transfer_bytes = 0;
- } else {
- scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
- frame_index,
- (void **)&frame_buffer);
-
- status = scic_sds_stp_request_pio_data_in_copy_data(stp_req,
- (u8 *)frame_buffer);
-
- /* Frame is decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
- }
-
- /* Check for the end of the transfer, are there more
- * bytes remaining for this data transfer
- */
- if (status != SCI_SUCCESS ||
- stp_req->type.pio.pio_transfer_bytes != 0)
- return status;
-
- if ((stp_req->type.pio.ending_status & ATA_BUSY) == 0) {
- scic_sds_request_set_status(sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- } else {
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
- }
- } else {
- dev_err(scic_to_dev(scic),
- "%s: SCIC PIO Request 0x%p received frame %d "
- "with fis type 0x%02x when expecting a data "
- "fis.\n", __func__, stp_req, frame_index,
- frame_header->fis_type);
-
- scic_sds_request_set_status(sci_req,
- SCU_TASK_DONE_GOOD,
- SCI_FAILURE_IO_REQUIRES_SCSI_ABORT);
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Frame is decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
- }
-
- return status;
-}
-
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * enum sci_status
- */
-static enum sci_status scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler(
-
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- enum sci_status status = SCI_SUCCESS;
- bool all_frames_transferred = false;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
-
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- /* Transmit data */
- if (stp_req->type.pio.pio_transfer_bytes != 0) {
- status = scic_sds_stp_request_pio_data_out_transmit_data(sci_req);
- if (status == SCI_SUCCESS) {
- if (stp_req->type.pio.pio_transfer_bytes == 0)
- all_frames_transferred = true;
- }
- } else if (stp_req->type.pio.pio_transfer_bytes == 0) {
- /*
- * this will happen if the all data is written at the
- * first time after the pio setup fis is received
- */
- all_frames_transferred = true;
- }
-
- /* all data transferred. */
- if (all_frames_transferred) {
- /*
- * Change the state to SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_FRAME_SUBSTATE
- * and wait for PIO_SETUP fis / or D2H REg fis. */
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
- }
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED
- );
- break;
- }
-
- return status;
-}
-
-/**
- *
- * @request: This is the request which is receiving the event.
- * @event_code: This is the event code that the request on which the request is
- * expected to take action.
- *
- * This method will handle any link layer events while waiting for the data
- * frame. enum sci_status SCI_SUCCESS SCI_FAILURE
- */
-static enum sci_status scic_sds_stp_request_pio_data_in_await_data_event_handler(
- struct scic_sds_request *request,
- u32 event_code)
-{
- enum sci_status status;
-
- switch (scu_get_event_specifier(event_code)) {
- case SCU_TASK_DONE_CRC_ERR << SCU_EVENT_SPECIFIC_CODE_SHIFT:
- /*
- * We are waiting for data and the SCU has R_ERR the data frame.
- * Go back to waiting for the D2H Register FIS */
- sci_base_state_machine_change_state(
- &request->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
-
- status = SCI_SUCCESS;
- break;
-
- default:
- dev_err(scic_to_dev(request->owning_controller),
- "%s: SCIC PIO Request 0x%p received unexpected "
- "event 0x%08x\n",
- __func__, request, event_code);
-
- /* / @todo Should we fail the PIO request when we get an unexpected event? */
- status = SCI_FAILURE;
- break;
- }
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_pio_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_pio_await_frame_frame_handler
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .event_handler = scic_sds_stp_request_pio_data_in_await_data_event_handler,
- .frame_handler = scic_sds_stp_request_pio_data_in_await_data_frame_handler
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler,
- }
-};
-
-static void scic_sds_stp_request_started_pio_await_h2d_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE
- );
-
- scic_sds_remote_device_set_working_request(
- sci_req->target_device, sci_req);
-}
-
-static void scic_sds_stp_request_started_pio_await_frame_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
-}
-
-static void scic_sds_stp_request_started_pio_data_in_await_data_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE
- );
-}
-
-static void scic_sds_stp_request_started_pio_data_out_transmit_data_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE
- );
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_stp_request_started_pio_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_await_h2d_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_await_frame_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_data_in_await_data_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_data_out_transmit_data_enter,
- }
-};
-
-enum sci_status
-scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
- bool copy_rx_frame)
-{
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_stp_pio_request *pio = &stp_req->type.pio;
-
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- scu_stp_raw_request_construct_task_context(stp_req,
- sci_req->task_context_buffer);
-
- pio->current_transfer_bytes = 0;
- pio->ending_error = 0;
- pio->ending_status = 0;
-
- pio->request_current.sgl_offset = 0;
- pio->request_current.sgl_set = SCU_SGL_ELEMENT_PAIR_A;
-
- if (copy_rx_frame) {
- scic_sds_request_build_sgl(sci_req);
- /* Since the IO request copy of the TC contains the same data as
- * the actual TC this pointer is vaild for either.
- */
- pio->request_current.sgl_pair = &sci_req->task_context_buffer->sgl_pair_ab;
- } else {
- /* The user does not want the data copied to the SGL buffer location */
- pio->request_current.sgl_pair = NULL;
- }
-
- sci_base_state_machine_construct(&sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_pio_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE);
-
- return SCI_SUCCESS;
-}
-
-static void scic_sds_stp_request_udma_complete_request(
- struct scic_sds_request *request,
- u32 scu_status,
- enum sci_status sci_status)
-{
- scic_sds_request_set_status(request, scu_status, sci_status);
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-}
-
-static enum sci_status scic_sds_stp_request_udma_general_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- struct scic_sds_controller *scic = sci_req->owning_controller;
- struct dev_to_host_fis *frame_header;
- enum sci_status status;
- u32 *frame_buffer;
-
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
-
- if ((status == SCI_SUCCESS) &&
- (frame_header->fis_type == FIS_REGD2H)) {
- scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
- frame_index,
- (void **)&frame_buffer);
-
- scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
- frame_header,
- frame_buffer);
- }
-
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-static enum sci_status scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- enum sci_status status = SCI_SUCCESS;
-
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_stp_request_udma_complete_request(sci_req,
- SCU_TASK_DONE_GOOD,
- SCI_SUCCESS);
- break;
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_FIS):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
- /*
- * We must check ther response buffer to see if the D2H Register FIS was
- * received before we got the TC completion. */
- if (sci_req->stp.rsp.fis_type == FIS_REGD2H) {
- scic_sds_remote_device_suspend(sci_req->target_device,
- SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
-
- scic_sds_stp_request_udma_complete_request(sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
- } else {
- /*
- * If we have an error completion status for the TC then we can expect a
- * D2H register FIS from the device so we must change state to wait for it */
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE);
- }
- break;
-
- /*
- * / @todo Check to see if any of these completion status need to wait for
- * / the device to host register fis. */
- /* / @todo We can retry the command for SCU_TASK_DONE_CMD_LL_R_ERR - this comes only for B0 */
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_INV_FIS_LEN):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_R_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CMD_LL_R_ERR):
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CRC_ERR):
- scic_sds_remote_device_suspend(sci_req->target_device,
- SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
- /* Fall through to the default case */
- default:
- /* All other completion status cause the IO to be complete. */
- scic_sds_stp_request_udma_complete_request(sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- break;
- }
-
- return status;
-}
-
-static enum sci_status scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
-
- /* Use the general frame handler to copy the resposne data */
- status = scic_sds_stp_request_udma_general_frame_handler(sci_req, frame_index);
-
- if (status != SCI_SUCCESS)
- return status;
-
- scic_sds_stp_request_udma_complete_request(sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_udma_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler,
- .frame_handler = scic_sds_stp_request_udma_general_frame_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler,
- },
-};
-
-static void scic_sds_stp_request_started_udma_await_tc_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_udma_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
- );
-}
-
-/**
- *
- *
- * This state is entered when there is an TC completion failure. The hardware
- * received an unexpected condition while processing the IO request and now
- * will UF the D2H register FIS to complete the IO.
- */
-static void scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_udma_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE
- );
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_stp_request_started_udma_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_udma_await_tc_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter,
- },
-};
-
-enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
- u32 len,
- enum dma_data_direction dir)
-{
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- scic_sds_stp_optimized_request_construct(sci_req, SCU_TASK_TYPE_DMA_IN,
- len, dir);
-
- sci_base_state_machine_construct(
- &sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_udma_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
- );
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * This method processes a TC completion. The expected TC completion is for
- * the transmission of the H2D register FIS containing the SATA/STP non-data
- * request. This method always successfully processes the TC completion.
- * SCI_SUCCESS This value is always returned.
- */
-static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * This method processes a TC completion. The expected TC completion is for
- * the transmission of the H2D register FIS containing the SATA/STP non-data
- * request. This method always successfully processes the TC completion.
- * SCI_SUCCESS This value is always returned.
- */
-static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @request: This parameter specifies the request for which a frame has been
- * received.
- * @frame_index: This parameter specifies the index of the frame that has been
- * received.
- *
- * This method processes frames received from the target while waiting for a
- * device to host register FIS. If a non-register FIS is received during this
- * time, it is treated as a protocol violation from an IO perspective. Indicate
- * if the received frame was processed successfully.
- */
-static enum sci_status scic_sds_stp_request_soft_reset_await_d2h_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- struct dev_to_host_fis *frame_header;
- u32 *frame_buffer;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_controller *scic = sci_req->owning_controller;
-
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
- if (status != SCI_SUCCESS) {
- dev_err(scic_to_dev(scic),
- "%s: SCIC IO Request 0x%p could not get frame header "
- "for frame index %d, status %x\n",
- __func__, stp_req, frame_index, status);
- return status;
- }
-
- switch (frame_header->fis_type) {
- case FIS_REGD2H:
- scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
- frame_index,
- (void **)&frame_buffer);
-
- scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
- frame_header,
- frame_buffer);
-
- /* The command has completed with error */
- scic_sds_request_set_status(sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
- break;
-
- default:
- dev_warn(scic_to_dev(scic),
- "%s: IO Request:0x%p Frame Id:%d protocol "
- "violation occurred\n", __func__, stp_req,
- frame_index);
-
- scic_sds_request_set_status(sci_req, SCU_TASK_DONE_UNEXP_FIS,
- SCI_FAILURE_PROTOCOL_VIOLATION);
- break;
- }
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Frame has been decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_soft_reset_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_soft_reset_await_d2h_frame_handler,
- },
-};
-
-static void scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE
- );
-
- scic_sds_remote_device_set_working_request(
- sci_req->target_device, sci_req
- );
-}
-
-static void scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
- struct scu_task_context *task_context;
- struct host_to_dev_fis *h2d_fis;
- enum sci_status status;
-
- /* Clear the SRST bit */
- h2d_fis = &sci_req->stp.cmd;
- h2d_fis->control = 0;
-
- /* Clear the TC control bit */
- task_context = scic_sds_controller_get_task_context_buffer(
- sci_req->owning_controller, sci_req->io_tag);
- task_context->control_frame = 0;
-
- status = scic_controller_continue_io(sci_req);
- if (status == SCI_SUCCESS) {
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
- );
- }
-}
-
-static void scic_sds_stp_request_started_soft_reset_await_d2h_response_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
- );
-}
-
-static const struct sci_base_state scic_sds_stp_request_started_soft_reset_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_soft_reset_await_d2h_response_enter,
- },
-};
-
-enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req)
-{
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
-
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- /* Build the STP task context structure */
- scu_stp_raw_request_construct_task_context(stp_req, sci_req->task_context_buffer);
-
- sci_base_state_machine_construct(&sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE);
-
- return SCI_SUCCESS;
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_STP_REQUEST_T_
-#define _SCIC_SDS_STP_REQUEST_T_
-
-#include <linux/dma-mapping.h>
-#include <scsi/sas.h>
-
-struct scic_sds_stp_request {
- union {
- u32 ncq;
-
- u32 udma;
-
- struct scic_sds_stp_pio_request {
- /**
- * Total transfer for the entire PIO request recorded at request constuction
- * time.
- *
- * @todo Should we just decrement this value for each byte of data transitted
- * or received to elemenate the current_transfer_bytes field?
- */
- u32 total_transfer_bytes;
-
- /**
- * Total number of bytes received/transmitted in data frames since the start
- * of the IO request. At the end of the IO request this should equal the
- * total_transfer_bytes.
- */
- u32 current_transfer_bytes;
-
- /**
- * The number of bytes requested in the in the PIO setup.
- */
- u32 pio_transfer_bytes;
-
- /**
- * PIO Setup ending status value to tell us if we need to wait for another FIS
- * or if the transfer is complete. On the receipt of a D2H FIS this will be
- * the status field of that FIS.
- */
- u8 ending_status;
-
- /**
- * On receipt of a D2H FIS this will be the ending error field if the
- * ending_status has the SATA_STATUS_ERR bit set.
- */
- u8 ending_error;
-
- struct scic_sds_request_pio_sgl {
- struct scu_sgl_element_pair *sgl_pair;
- u8 sgl_set;
- u32 sgl_offset;
- } request_current;
- } pio;
-
- struct {
- /**
- * The number of bytes requested in the PIO setup before CDB data frame.
- */
- u32 device_preferred_cdb_length;
- } packet;
- } type;
-};
-
-/**
- * enum scic_sds_stp_request_started_udma_substates - This enumeration depicts
- * the various sub-states associated with a SATA/STP UDMA protocol operation.
- *
- *
- */
-enum scic_sds_stp_request_started_udma_substates {
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE,
-};
-
-/**
- * enum scic_sds_stp_request_started_non_data_substates - This enumeration
- * depicts the various sub-states associated with a SATA/STP non-data
- * protocol operation.
- *
- *
- */
-enum scic_sds_stp_request_started_non_data_substates {
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE,
-};
-
-/**
- * enum scic_sds_stp_request_started_soft_reset_substates - THis enumeration
- * depicts the various sub-states associated with a SATA/STP soft reset
- * operation.
- *
- *
- */
-enum scic_sds_stp_request_started_soft_reset_substates {
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
-};
-
-u32 scic_sds_stp_request_get_object_size(void);
-
-enum sci_status scic_sds_stp_pio_request_construct(
- struct scic_sds_request *scic_io_request,
- bool copy_rx_frame);
-
-enum sci_status scic_sds_stp_udma_request_construct(
- struct scic_sds_request *sci_req,
- u32 transfer_length,
- enum dma_data_direction dir);
-
-enum sci_status scic_sds_stp_non_data_request_construct(
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_stp_soft_reset_request_construct(
- struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_stp_ncq_request_construct(
- struct scic_sds_request *sci_req,
- u32 transfer_length,
- enum dma_data_direction dir);
-
-
-#endif /* _SCIC_SDS_STP_REQUEST_T_ */
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_TASK_REQUEST_H_
-#define _SCIC_TASK_REQUEST_H_
-
-#include "isci.h"
-
-struct scic_sds_request;
-struct scic_sds_remote_device;
-struct scic_sds_controller;
-
-
-enum sci_status scic_task_request_construct(
- struct scic_sds_controller *scic_controller,
- struct scic_sds_remote_device *scic_remote_device,
- u16 io_tag, struct scic_sds_request *sci_req);
-
-/**
- * scic_task_request_construct_ssp() - This method is called by the SCI user to
- * construct all SCI Core SSP task management requests. Memory
- * initialization and functionality common to all task request types is
- * performed in this method.
- * @scic_task_request: This parameter specifies the handle to the core task
- * request object for which to construct a SATA specific task management
- * request.
- *
- * Indicate if the controller successfully built the task request. SCI_SUCCESS
- * This value is returned if the task request was successfully built.
- */
-enum sci_status scic_task_request_construct_ssp(
- struct scic_sds_request *scic_task_request);
-
-/**
- * scic_task_request_construct_sata() - This method is called by the SCI user
- * to construct all SCI Core SATA task management requests. Memory
- * initialization and functionality common to all task request types is
- * performed in this method.
- * @scic_task_request_handle: This parameter specifies the handle to the core
- * task request object for which to construct a SATA specific task
- * management request.
- *
- * Indicate if the controller successfully built the task request. SCI_SUCCESS
- * This value is returned if the task request was successfully built.
- */
-enum sci_status scic_task_request_construct_sata(
- struct scic_sds_request *scic_task_request_handle);
-
-
-
-#endif /* _SCIC_TASK_REQUEST_H_ */
-
#include "probe_roms.h"
#include "remote_device.h"
#include "request.h"
-#include "scic_io_request.h"
#include "scic_sds_port_configuration_agent.h"
-#include "sci_util.h"
#include "scu_completion_codes.h"
#include "scu_event_codes.h"
#include "registers.h"
};
+/**
+ * sci_swab32_cpy - convert between scsi and scu-hardware byte format
+ * @dest: receive the 4-byte endian swapped version of src
+ * @src: word aligned source buffer
+ *
+ * scu hardware handles SSP/SMP control, response, and unidentified
+ * frames in "big endian dword" order. Regardless of host endian this
+ * is always a swab32()-per-dword conversion of the standard definition,
+ * i.e. single byte fields swapped and multi-byte fields in little-
+ * endian
+ */
+static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
+{
+ u32 *dest = _dest, *src = _src;
+
+ while (--word_cnt >= 0)
+ dest[word_cnt] = swab32(src[word_cnt]);
+}
+
extern unsigned char no_outbound_task_to;
extern u16 ssp_max_occ_to;
extern u16 stp_max_occ_to;
#include <linux/workqueue.h>
#include "isci.h"
-#include "scic_io_request.h"
#include "scic_phy.h"
#include "scic_sds_phy.h"
#include "scic_port.h"
#include "port.h"
#include "remote_device.h"
#include "request.h"
-#include "scic_io_request.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "remote_node_context.h"
-#include "scic_sds_request.h"
-#include "sci_util.h"
#include "scu_event_codes.h"
#include "task.h"
#include "scic_sds_port.h"
#include "remote_device.h"
#include "remote_node_context.h"
-#include "sci_util.h"
#include "scu_event_codes.h"
#include "scu_task_context.h"
*
*
*/
-#include "sci_util.h"
#include "remote_node_table.h"
#include "remote_node_context.h"
*/
#include "isci.h"
-#include "scic_io_request.h"
-#include "scic_task_request.h"
#include "scic_port.h"
#include "task.h"
#include "request.h"
#include "sata.h"
#include "scu_completion_codes.h"
-#include "scic_sds_request.h"
#include "sas.h"
-static enum sci_status isci_request_ssp_request_construct(
- struct isci_request *request)
-{
- enum sci_status status;
+/**
+ * This method returns the sgl element pair for the specificed sgl_pair index.
+ * @sci_req: This parameter specifies the IO request for which to retrieve
+ * the Scatter-Gather List element pair.
+ * @sgl_pair_index: This parameter specifies the index into the SGL element
+ * pair to be retrieved.
+ *
+ * This method returns a pointer to an struct scu_sgl_element_pair.
+ */
+static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
+ struct scic_sds_request *sci_req,
+ u32 sgl_pair_index
+ ) {
+ struct scu_task_context *task_context;
+
+ task_context = (struct scu_task_context *)sci_req->task_context_buffer;
+
+ if (sgl_pair_index == 0) {
+ return &task_context->sgl_pair_ab;
+ } else if (sgl_pair_index == 1) {
+ return &task_context->sgl_pair_cd;
+ }
- dev_dbg(&request->isci_host->pdev->dev,
- "%s: request = %p\n",
- __func__,
- request);
- status = scic_io_request_construct_basic_ssp(&request->sci);
- return status;
+ return &sci_req->sg_table[sgl_pair_index - 2];
}
-static enum sci_status isci_request_stp_request_construct(
- struct isci_request *request)
+/**
+ * This function will build the SGL list for an IO request.
+ * @sci_req: This parameter specifies the IO request for which to build
+ * the Scatter-Gather List.
+ *
+ */
+void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
{
- struct sas_task *task = isci_request_access_task(request);
- enum sci_status status;
- struct host_to_dev_fis *register_fis;
-
- dev_dbg(&request->isci_host->pdev->dev,
- "%s: request = %p\n",
- __func__,
- request);
+ struct isci_request *isci_request = sci_req_to_ireq(sds_request);
+ struct isci_host *isci_host = isci_request->isci_host;
+ struct sas_task *task = isci_request_access_task(isci_request);
+ struct scatterlist *sg = NULL;
+ dma_addr_t dma_addr;
+ u32 sg_idx = 0;
+ struct scu_sgl_element_pair *scu_sg = NULL;
+ struct scu_sgl_element_pair *prev_sg = NULL;
+
+ if (task->num_scatter > 0) {
+ sg = task->scatter;
+
+ while (sg) {
+ scu_sg = scic_sds_request_get_sgl_element_pair(
+ sds_request,
+ sg_idx);
+
+ SCU_SGL_COPY(scu_sg->A, sg);
+
+ sg = sg_next(sg);
+
+ if (sg) {
+ SCU_SGL_COPY(scu_sg->B, sg);
+ sg = sg_next(sg);
+ } else
+ SCU_SGL_ZERO(scu_sg->B);
+
+ if (prev_sg) {
+ dma_addr =
+ scic_io_request_get_dma_addr(
+ sds_request,
+ scu_sg);
+
+ prev_sg->next_pair_upper =
+ upper_32_bits(dma_addr);
+ prev_sg->next_pair_lower =
+ lower_32_bits(dma_addr);
+ }
+
+ prev_sg = scu_sg;
+ sg_idx++;
+ }
+ } else { /* handle when no sg */
+ scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
+ sg_idx);
- /* Get the host_to_dev_fis from the core and copy
- * the fis from the task into it.
- */
- register_fis = isci_sata_task_to_fis_copy(task);
+ dma_addr = dma_map_single(&isci_host->pdev->dev,
+ task->scatter,
+ task->total_xfer_len,
+ task->data_dir);
- status = scic_io_request_construct_basic_sata(&request->sci);
+ isci_request->zero_scatter_daddr = dma_addr;
- /* Set the ncq tag in the fis, from the queue
- * command in the task.
- */
- if (isci_sata_is_task_ncq(task)) {
+ scu_sg->A.length = task->total_xfer_len;
+ scu_sg->A.address_upper = upper_32_bits(dma_addr);
+ scu_sg->A.address_lower = lower_32_bits(dma_addr);
+ }
- isci_sata_set_ncq_tag(
- register_fis,
- task
- );
+ if (scu_sg) {
+ scu_sg->next_pair_upper = 0;
+ scu_sg->next_pair_lower = 0;
}
+}
- return status;
+static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
+{
+ if (sci_req->was_tag_assigned_by_user == false)
+ sci_req->task_context_buffer = &sci_req->tc;
}
-/*
- * isci_smp_request_build() - This function builds the smp request.
- * @ireq: This parameter points to the isci_request allocated in the
- * request construct function.
- *
- * SCI_SUCCESS on successfull completion, or specific failure code.
- */
-static enum sci_status isci_smp_request_build(struct isci_request *ireq)
+static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
{
- enum sci_status status = SCI_FAILURE;
+ struct ssp_cmd_iu *cmd_iu;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
struct sas_task *task = isci_request_access_task(ireq);
- struct scic_sds_request *sci_req = &ireq->sci;
- dev_dbg(&ireq->isci_host->pdev->dev,
- "%s: request = %p\n", __func__, ireq);
+ cmd_iu = &sci_req->ssp.cmd;
- dev_dbg(&ireq->isci_host->pdev->dev,
- "%s: smp_req len = %d\n",
- __func__,
- task->smp_task.smp_req.length);
+ memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
+ cmd_iu->add_cdb_len = 0;
+ cmd_iu->_r_a = 0;
+ cmd_iu->_r_b = 0;
+ cmd_iu->en_fburst = 0; /* unsupported */
+ cmd_iu->task_prio = task->ssp_task.task_prio;
+ cmd_iu->task_attr = task->ssp_task.task_attr;
+ cmd_iu->_r_c = 0;
- /* copy the smp_command to the address; */
- sg_copy_to_buffer(&task->smp_task.smp_req, 1,
- &sci_req->smp.cmd,
- sizeof(struct smp_req));
+ sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
+ sizeof(task->ssp_task.cdb) / sizeof(u32));
+}
- status = scic_io_request_construct_smp(sci_req);
- if (status != SCI_SUCCESS)
- dev_warn(&ireq->isci_host->pdev->dev,
- "%s: failed with status = %d\n",
- __func__,
- status);
+static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
+{
+ struct ssp_task_iu *task_iu;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ struct sas_task *task = isci_request_access_task(ireq);
+ struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
- return status;
+ task_iu = &sci_req->ssp.tmf;
+
+ memset(task_iu, 0, sizeof(struct ssp_task_iu));
+
+ memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
+
+ task_iu->task_func = isci_tmf->tmf_code;
+ task_iu->task_tag =
+ (ireq->ttype == tmf_task) ?
+ isci_tmf->io_tag :
+ SCI_CONTROLLER_INVALID_IO_TAG;
}
/**
- * isci_io_request_build() - This function builds the io request object.
- * @isci_host: This parameter specifies the ISCI host object
- * @request: This parameter points to the isci_request object allocated in the
- * request construct function.
- * @sci_device: This parameter is the handle for the sci core's remote device
- * object that is the destination for this request.
+ * This method is will fill in the SCU Task Context for any type of SSP request.
+ * @sci_req:
+ * @task_context:
*
- * SCI_SUCCESS on successfull completion, or specific failure code.
*/
-static enum sci_status isci_io_request_build(
- struct isci_host *isci_host,
- struct isci_request *request,
- struct isci_remote_device *isci_device)
+static void scu_ssp_reqeust_construct_task_context(
+ struct scic_sds_request *sds_request,
+ struct scu_task_context *task_context)
{
- enum sci_status status = SCI_SUCCESS;
- struct sas_task *task = isci_request_access_task(request);
- struct scic_sds_remote_device *sci_device = &isci_device->sci;
+ dma_addr_t dma_addr;
+ struct scic_sds_controller *controller;
+ struct scic_sds_remote_device *target_device;
+ struct scic_sds_port *target_port;
+
+ controller = scic_sds_request_get_controller(sds_request);
+ target_device = scic_sds_request_get_device(sds_request);
+ target_port = scic_sds_request_get_port(sds_request);
+
+ /* Fill in the TC with the its required data */
+ task_context->abort = 0;
+ task_context->priority = 0;
+ task_context->initiator_request = 1;
+ task_context->connection_rate = target_device->connection_rate;
+ task_context->protocol_engine_index =
+ scic_sds_controller_get_protocol_engine_group(controller);
+ task_context->logical_port_index =
+ scic_sds_port_get_index(target_port);
+ task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
+ task_context->valid = SCU_TASK_CONTEXT_VALID;
+ task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+ task_context->remote_node_index =
+ scic_sds_remote_device_get_index(sds_request->target_device);
+ task_context->command_code = 0;
+
+ task_context->link_layer_control = 0;
+ task_context->do_not_dma_ssp_good_response = 1;
+ task_context->strict_ordering = 0;
+ task_context->control_frame = 0;
+ task_context->timeout_enable = 0;
+ task_context->block_guard_enable = 0;
+
+ task_context->address_modifier = 0;
+
+ /* task_context->type.ssp.tag = sci_req->io_tag; */
+ task_context->task_phase = 0x01;
+
+ if (sds_request->was_tag_assigned_by_user) {
+ /*
+ * Build the task context now since we have already read
+ * the data
+ */
+ sds_request->post_context =
+ (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(
+ controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+ scic_sds_io_tag_get_index(sds_request->io_tag));
+ } else {
+ /*
+ * Build the task context now since we have already read
+ * the data
+ *
+ * I/O tag index is not assigned because we have to wait
+ * until we get a TCi
+ */
+ sds_request->post_context =
+ (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(
+ owning_controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
+ }
- dev_dbg(&isci_host->pdev->dev,
- "%s: isci_device = 0x%p; request = %p, "
- "num_scatter = %d\n",
- __func__,
- isci_device,
- request,
- task->num_scatter);
+ /*
+ * Copy the physical address for the command buffer to the
+ * SCU Task Context
+ */
+ dma_addr = scic_io_request_get_dma_addr(sds_request,
+ &sds_request->ssp.cmd);
- /* map the sgl addresses, if present.
- * libata does the mapping for sata devices
- * before we get the request.
+ task_context->command_iu_upper = upper_32_bits(dma_addr);
+ task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+ /*
+ * Copy the physical address for the response buffer to the
+ * SCU Task Context
*/
- if (task->num_scatter &&
- !sas_protocol_ata(task->task_proto) &&
- !(SAS_PROTOCOL_SMP & task->task_proto)) {
+ dma_addr = scic_io_request_get_dma_addr(sds_request,
+ &sds_request->ssp.rsp);
- request->num_sg_entries = dma_map_sg(
- &isci_host->pdev->dev,
- task->scatter,
- task->num_scatter,
- task->data_dir
- );
+ task_context->response_iu_upper = upper_32_bits(dma_addr);
+ task_context->response_iu_lower = lower_32_bits(dma_addr);
+}
- if (request->num_sg_entries == 0)
- return SCI_FAILURE_INSUFFICIENT_RESOURCES;
- }
+/**
+ * This method is will fill in the SCU Task Context for a SSP IO request.
+ * @sci_req:
+ *
+ */
+static void scu_ssp_io_request_construct_task_context(
+ struct scic_sds_request *sci_req,
+ enum dma_data_direction dir,
+ u32 len)
+{
+ struct scu_task_context *task_context;
- /* build the common request object. For now,
- * we will let the core allocate the IO tag.
- */
- status = scic_io_request_construct(&isci_host->sci, sci_device,
- SCI_CONTROLLER_INVALID_IO_TAG,
- &request->sci);
+ task_context = scic_sds_request_get_task_context(sci_req);
- if (status != SCI_SUCCESS) {
- dev_warn(&isci_host->pdev->dev,
- "%s: failed request construct\n",
- __func__);
- return SCI_FAILURE;
- }
+ scu_ssp_reqeust_construct_task_context(sci_req, task_context);
- switch (task->task_proto) {
- case SAS_PROTOCOL_SMP:
- status = isci_smp_request_build(request);
- break;
- case SAS_PROTOCOL_SSP:
- status = isci_request_ssp_request_construct(request);
+ task_context->ssp_command_iu_length =
+ sizeof(struct ssp_cmd_iu) / sizeof(u32);
+ task_context->type.ssp.frame_type = SSP_COMMAND;
+
+ switch (dir) {
+ case DMA_FROM_DEVICE:
+ case DMA_NONE:
+ default:
+ task_context->task_type = SCU_TASK_TYPE_IOREAD;
break;
- case SAS_PROTOCOL_SATA:
- case SAS_PROTOCOL_STP:
- case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
- status = isci_request_stp_request_construct(request);
+ case DMA_TO_DEVICE:
+ task_context->task_type = SCU_TASK_TYPE_IOWRITE;
break;
- default:
- dev_warn(&isci_host->pdev->dev,
- "%s: unknown protocol\n", __func__);
- return SCI_FAILURE;
}
- return SCI_SUCCESS;
+ task_context->transfer_length_bytes = len;
+
+ if (task_context->transfer_length_bytes > 0)
+ scic_sds_request_build_sgl(sci_req);
}
+static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
+{
+ if (sci_req->was_tag_assigned_by_user == false)
+ sci_req->task_context_buffer = &sci_req->tc;
+}
/**
- * isci_request_alloc_core() - This function gets the request object from the
- * isci_host dma cache.
- * @isci_host: This parameter specifies the ISCI host object
- * @isci_request: This parameter will contain the pointer to the new
- * isci_request object.
- * @isci_device: This parameter is the pointer to the isci remote device object
- * that is the destination for this request.
- * @gfp_flags: This parameter specifies the os allocation flags.
+ * This method will fill in the SCU Task Context for a SSP Task request. The
+ * following important settings are utilized: -# priority ==
+ * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued
+ * ahead of other task destined for the same Remote Node. -# task_type ==
+ * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type
+ * (i.e. non-raw frame) is being utilized to perform task management. -#
+ * control_frame == 1. This ensures that the proper endianess is set so
+ * that the bytes are transmitted in the right order for a task frame.
+ * @sci_req: This parameter specifies the task request object being
+ * constructed.
*
- * SCI_SUCCESS on successfull completion, or specific failure code.
*/
-static int isci_request_alloc_core(
- struct isci_host *isci_host,
- struct isci_request **isci_request,
- struct isci_remote_device *isci_device,
- gfp_t gfp_flags)
+static void scu_ssp_task_request_construct_task_context(
+ struct scic_sds_request *sci_req)
{
- int ret = 0;
- dma_addr_t handle;
- struct isci_request *request;
-
-
- /* get pointer to dma memory. This actually points
- * to both the isci_remote_device object and the
- * sci object. The isci object is at the beginning
- * of the memory allocated here.
- */
- request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle);
- if (!request) {
- dev_warn(&isci_host->pdev->dev,
- "%s: dma_pool_alloc returned NULL\n", __func__);
- return -ENOMEM;
- }
-
- /* initialize the request object. */
- spin_lock_init(&request->state_lock);
- request->request_daddr = handle;
- request->isci_host = isci_host;
- request->isci_device = isci_device;
- request->io_request_completion = NULL;
- request->terminated = false;
-
- request->num_sg_entries = 0;
-
- request->complete_in_target = false;
+ struct scu_task_context *task_context;
- INIT_LIST_HEAD(&request->completed_node);
- INIT_LIST_HEAD(&request->dev_node);
+ task_context = scic_sds_request_get_task_context(sci_req);
- *isci_request = request;
- isci_request_change_state(request, allocated);
+ scu_ssp_reqeust_construct_task_context(sci_req, task_context);
- return ret;
+ task_context->control_frame = 1;
+ task_context->priority = SCU_TASK_PRIORITY_HIGH;
+ task_context->task_type = SCU_TASK_TYPE_RAW_FRAME;
+ task_context->transfer_length_bytes = 0;
+ task_context->type.ssp.frame_type = SSP_TASK;
+ task_context->ssp_command_iu_length =
+ sizeof(struct ssp_task_iu) / sizeof(u32);
}
-static int isci_request_alloc_io(
- struct isci_host *isci_host,
- struct sas_task *task,
- struct isci_request **isci_request,
- struct isci_remote_device *isci_device,
- gfp_t gfp_flags)
-{
- int retval = isci_request_alloc_core(isci_host, isci_request,
- isci_device, gfp_flags);
- if (!retval) {
- (*isci_request)->ttype_ptr.io_task_ptr = task;
- (*isci_request)->ttype = io_task;
+/**
+ * This method constructs the SSP Command IU data for this ssp passthrough
+ * comand request object.
+ * @sci_req: This parameter specifies the request object for which the SSP
+ * command information unit is being built.
+ *
+ * enum sci_status, returns invalid parameter is cdb > 16
+ */
- task->lldd_task = *isci_request;
- }
- return retval;
-}
/**
- * isci_request_alloc_tmf() - This function gets the request object from the
- * isci_host dma cache and initializes the relevant fields as a sas_task.
- * @isci_host: This parameter specifies the ISCI host object
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @isci_request: This parameter will contain the pointer to the new
- * isci_request object.
- * @isci_device: This parameter is the pointer to the isci remote device object
- * that is the destination for this request.
- * @gfp_flags: This parameter specifies the os allocation flags.
+ * This method constructs the SATA request object.
+ * @sci_req:
+ * @sat_protocol:
+ * @transfer_length:
+ * @data_direction:
+ * @copy_rx_frame:
*
- * SCI_SUCCESS on successfull completion, or specific failure code.
+ * enum sci_status
*/
-int isci_request_alloc_tmf(
- struct isci_host *isci_host,
- struct isci_tmf *isci_tmf,
- struct isci_request **isci_request,
- struct isci_remote_device *isci_device,
- gfp_t gfp_flags)
+static enum sci_status
+scic_io_request_construct_sata(struct scic_sds_request *sci_req,
+ u32 len,
+ enum dma_data_direction dir,
+ bool copy)
{
- int retval = isci_request_alloc_core(isci_host, isci_request,
- isci_device, gfp_flags);
+ enum sci_status status = SCI_SUCCESS;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ struct sas_task *task = isci_request_access_task(ireq);
- if (!retval) {
+ /* check for management protocols */
+ if (ireq->ttype == tmf_task) {
+ struct isci_tmf *tmf = isci_request_access_tmf(ireq);
- (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf;
- (*isci_request)->ttype = tmf_task;
+ if (tmf->tmf_code == isci_tmf_sata_srst_high ||
+ tmf->tmf_code == isci_tmf_sata_srst_low)
+ return scic_sds_stp_soft_reset_request_construct(sci_req);
+ else {
+ dev_err(scic_to_dev(sci_req->owning_controller),
+ "%s: Request 0x%p received un-handled SAT "
+ "management protocol 0x%x.\n",
+ __func__, sci_req, tmf->tmf_code);
+
+ return SCI_FAILURE;
+ }
}
- return retval;
-}
-/**
- * isci_request_execute() - This function allocates the isci_request object,
- * all fills in some common fields.
- * @isci_host: This parameter specifies the ISCI host object
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @isci_request: This parameter will contain the pointer to the new
- * isci_request object.
- * @gfp_flags: This parameter specifies the os allocation flags.
- *
- * SCI_SUCCESS on successfull completion, or specific failure code.
- */
-int isci_request_execute(
- struct isci_host *isci_host,
- struct sas_task *task,
- struct isci_request **isci_request,
- gfp_t gfp_flags)
+ if (!sas_protocol_ata(task->task_proto)) {
+ dev_err(scic_to_dev(sci_req->owning_controller),
+ "%s: Non-ATA protocol in SATA path: 0x%x\n",
+ __func__,
+ task->task_proto);
+ return SCI_FAILURE;
+
+ }
+
+ /* non data */
+ if (task->data_dir == DMA_NONE)
+ return scic_sds_stp_non_data_request_construct(sci_req);
+
+ /* NCQ */
+ if (task->ata_task.use_ncq)
+ return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
+
+ /* DMA */
+ if (task->ata_task.dma_xfer)
+ return scic_sds_stp_udma_request_construct(sci_req, len, dir);
+ else /* PIO */
+ return scic_sds_stp_pio_request_construct(sci_req, copy);
+
+ return status;
+}
+
+static enum sci_status scic_io_request_construct_basic_ssp(struct scic_sds_request *sci_req)
{
- int ret = 0;
- struct scic_sds_remote_device *sci_device;
- enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
- struct isci_remote_device *isci_device;
- struct isci_request *request;
- unsigned long flags;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ struct sas_task *task = isci_request_access_task(ireq);
- isci_device = task->dev->lldd_dev;
- sci_device = &isci_device->sci;
+ sci_req->protocol = SCIC_SSP_PROTOCOL;
- /* do common allocation and init of request object. */
- ret = isci_request_alloc_io(
- isci_host,
- task,
- &request,
- isci_device,
- gfp_flags
- );
+ scu_ssp_io_request_construct_task_context(sci_req,
+ task->data_dir,
+ task->total_xfer_len);
- if (ret)
- goto out;
+ scic_sds_io_request_build_ssp_command_iu(sci_req);
- status = isci_io_request_build(isci_host, request, isci_device);
- if (status != SCI_SUCCESS) {
- dev_warn(&isci_host->pdev->dev,
- "%s: request_construct failed - status = 0x%x\n",
- __func__,
- status);
- goto out;
- }
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
- spin_lock_irqsave(&isci_host->scic_lock, flags);
+ return SCI_SUCCESS;
+}
- /* send the request, let the core assign the IO TAG. */
- status = scic_controller_start_io(&isci_host->sci, sci_device,
- &request->sci,
- SCI_CONTROLLER_INVALID_IO_TAG);
- if (status != SCI_SUCCESS &&
- status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
- dev_warn(&isci_host->pdev->dev,
- "%s: failed request start (0x%x)\n",
- __func__, status);
- spin_unlock_irqrestore(&isci_host->scic_lock, flags);
- goto out;
- }
+enum sci_status scic_task_request_construct_ssp(
+ struct scic_sds_request *sci_req)
+{
+ /* Construct the SSP Task SCU Task Context */
+ scu_ssp_task_request_construct_task_context(sci_req);
- /* Either I/O started OK, or the core has signaled that
- * the device needs a target reset.
- *
- * In either case, hold onto the I/O for later.
- *
- * Update it's status and add it to the list in the
- * remote device object.
- */
- isci_request_change_state(request, started);
- list_add(&request->dev_node, &isci_device->reqs_in_process);
+ /* Fill in the SSP Task IU */
+ scic_sds_task_request_build_ssp_task_iu(sci_req);
- if (status == SCI_SUCCESS) {
- /* Save the tag for possible task mgmt later. */
- request->io_tag = scic_io_request_get_io_tag(&request->sci);
- } else {
- /* The request did not really start in the
- * hardware, so clear the request handle
- * here so no terminations will be done.
- */
- request->terminated = true;
- }
- spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
- if (status ==
- SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
- /* Signal libsas that we need the SCSI error
- * handler thread to work on this I/O and that
- * we want a device reset.
- */
- spin_lock_irqsave(&task->task_state_lock, flags);
- task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
- spin_unlock_irqrestore(&task->task_state_lock, flags);
+ return SCI_SUCCESS;
+}
- /* Cause this task to be scheduled in the SCSI error
- * handler thread.
- */
- isci_execpath_callback(isci_host, task,
- sas_task_abort);
- /* Change the status, since we are holding
- * the I/O until it is managed by the SCSI
- * error handler.
- */
- status = SCI_SUCCESS;
- }
+static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req)
+{
+ enum sci_status status;
+ struct scic_sds_stp_request *stp_req;
+ bool copy = false;
+ struct isci_request *isci_request = sci_req_to_ireq(sci_req);
+ struct sas_task *task = isci_request_access_task(isci_request);
- out:
- if (status != SCI_SUCCESS) {
- /* release dma memory on failure. */
- isci_request_free(isci_host, request);
- request = NULL;
- ret = SCI_FAILURE;
- }
+ stp_req = &sci_req->stp.req;
+ sci_req->protocol = SCIC_STP_PROTOCOL;
- *isci_request = request;
- return ret;
+ copy = (task->data_dir == DMA_NONE) ? false : true;
+
+ status = scic_io_request_construct_sata(sci_req,
+ task->total_xfer_len,
+ task->data_dir,
+ copy);
+
+ if (status == SCI_SUCCESS)
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
+ return status;
}
+enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
+{
+ enum sci_status status = SCI_SUCCESS;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+
+ /* check for management protocols */
+ if (ireq->ttype == tmf_task) {
+ struct isci_tmf *tmf = isci_request_access_tmf(ireq);
+
+ if (tmf->tmf_code == isci_tmf_sata_srst_high ||
+ tmf->tmf_code == isci_tmf_sata_srst_low) {
+ status = scic_sds_stp_soft_reset_request_construct(sci_req);
+ } else {
+ dev_err(scic_to_dev(sci_req->owning_controller),
+ "%s: Request 0x%p received un-handled SAT "
+ "Protocol 0x%x.\n",
+ __func__, sci_req, tmf->tmf_code);
+
+ return SCI_FAILURE;
+ }
+ }
+
+ if (status == SCI_SUCCESS)
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
+ return status;
+}
+
/**
- * isci_request_process_response_iu() - This function sets the status and
- * response iu, in the task struct, from the request object for the upper
- * layer driver.
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @resp_iu: This parameter points to the response iu of the completed request.
- * @dev: This parameter specifies the linux device struct.
- *
- * none.
+ * sci_req_tx_bytes - bytes transferred when reply underruns request
+ * @sci_req: request that was terminated early
*/
-static void isci_request_process_response_iu(
- struct sas_task *task,
- struct ssp_response_iu *resp_iu,
- struct device *dev)
+#define SCU_TASK_CONTEXT_SRAM 0x200000
+static u32 sci_req_tx_bytes(struct scic_sds_request *sci_req)
{
- dev_dbg(dev,
- "%s: resp_iu = %p "
- "resp_iu->status = 0x%x,\nresp_iu->datapres = %d "
- "resp_iu->response_data_len = %x, "
- "resp_iu->sense_data_len = %x\nrepsonse data: ",
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ u32 ret_val = 0;
+
+ if (readl(&scic->smu_registers->address_modifier) == 0) {
+ void __iomem *scu_reg_base = scic->scu_registers;
+
+ /* get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
+ * BAR1 is the scu_registers
+ * 0x20002C = 0x200000 + 0x2c
+ * = start of task context SRAM + offset of (type.ssp.data_offset)
+ * TCi is the io_tag of struct scic_sds_request
+ */
+ ret_val = readl(scu_reg_base +
+ (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
+ ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(sci_req->io_tag)));
+ }
+
+ return ret_val;
+}
+
+enum sci_status
+scic_sds_request_start(struct scic_sds_request *request)
+{
+ if (request->device_sequence !=
+ scic_sds_remote_device_get_sequence(request->target_device))
+ return SCI_FAILURE;
+
+ if (request->state_handlers->start_handler)
+ return request->state_handlers->start_handler(request);
+
+ dev_warn(scic_to_dev(request->owning_controller),
+ "%s: SCIC IO Request requested to start while in wrong "
+ "state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(&request->state_machine));
+
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+enum sci_status
+scic_sds_io_request_terminate(struct scic_sds_request *request)
+{
+ if (request->state_handlers->abort_handler)
+ return request->state_handlers->abort_handler(request);
+
+ dev_warn(scic_to_dev(request->owning_controller),
+ "%s: SCIC IO Request requested to abort while in wrong "
+ "state %d\n",
__func__,
- resp_iu,
- resp_iu->status,
- resp_iu->datapres,
- resp_iu->response_data_len,
- resp_iu->sense_data_len);
+ sci_base_state_machine_get_state(&request->state_machine));
- task->task_status.stat = resp_iu->status;
+ return SCI_FAILURE_INVALID_STATE;
+}
- /* libsas updates the task status fields based on the response iu. */
- sas_ssp_task_response(dev, task, resp_iu);
+enum sci_status scic_sds_io_request_event_handler(
+ struct scic_sds_request *request,
+ u32 event_code)
+{
+ if (request->state_handlers->event_handler)
+ return request->state_handlers->event_handler(request, event_code);
+
+ dev_warn(scic_to_dev(request->owning_controller),
+ "%s: SCIC IO Request given event code notification %x while "
+ "in wrong state %d\n",
+ __func__,
+ event_code,
+ sci_base_state_machine_get_state(&request->state_machine));
+
+ return SCI_FAILURE_INVALID_STATE;
}
/**
- * isci_request_set_open_reject_status() - This function prepares the I/O
- * completion for OPEN_REJECT conditions.
- * @request: This parameter is the completed isci_request object.
- * @response_ptr: This parameter specifies the service response for the I/O.
- * @status_ptr: This parameter specifies the exec status for the I/O.
- * @complete_to_host_ptr: This parameter specifies the action to be taken by
- * the LLDD with respect to completing this request or forcing an abort
- * condition on the I/O.
- * @open_rej_reason: This parameter specifies the encoded reason for the
- * abandon-class reject.
*
- * none.
+ * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
+ * operation is to be executed.
+ * @frame_index: The frame index returned by the hardware for the reqeust
+ * object.
+ *
+ * This method invokes the core state frame handler for the
+ * SCIC_SDS_IO_REQUEST_T object. enum sci_status
*/
-static void isci_request_set_open_reject_status(
- struct isci_request *request,
- struct sas_task *task,
- enum service_response *response_ptr,
- enum exec_status *status_ptr,
- enum isci_completion_selection *complete_to_host_ptr,
- enum sas_open_rej_reason open_rej_reason)
+enum sci_status scic_sds_io_request_frame_handler(
+ struct scic_sds_request *request,
+ u32 frame_index)
{
- /* Task in the target is done. */
- request->complete_in_target = true;
- *response_ptr = SAS_TASK_UNDELIVERED;
- *status_ptr = SAS_OPEN_REJECT;
- *complete_to_host_ptr = isci_perform_normal_io_completion;
- task->task_status.open_rej_reason = open_rej_reason;
+ if (request->state_handlers->frame_handler)
+ return request->state_handlers->frame_handler(request, frame_index);
+
+ dev_warn(scic_to_dev(request->owning_controller),
+ "%s: SCIC IO Request given unexpected frame %x while in "
+ "state %d\n",
+ __func__,
+ frame_index,
+ sci_base_state_machine_get_state(&request->state_machine));
+
+ scic_sds_controller_release_frame(request->owning_controller, frame_index);
+ return SCI_FAILURE_INVALID_STATE;
}
-/**
- * isci_request_handle_controller_specific_errors() - This function decodes
- * controller-specific I/O completion error conditions.
- * @request: This parameter is the completed isci_request object.
- * @response_ptr: This parameter specifies the service response for the I/O.
- * @status_ptr: This parameter specifies the exec status for the I/O.
- * @complete_to_host_ptr: This parameter specifies the action to be taken by
- * the LLDD with respect to completing this request or forcing an abort
- * condition on the I/O.
- *
- * none.
+/*
+ * This function copies response data for requests returning response data
+ * instead of sense data.
+ * @sci_req: This parameter specifies the request object for which to copy
+ * the response data.
*/
-static void isci_request_handle_controller_specific_errors(
- struct isci_remote_device *isci_device,
- struct isci_request *request,
- struct sas_task *task,
- enum service_response *response_ptr,
- enum exec_status *status_ptr,
- enum isci_completion_selection *complete_to_host_ptr)
+void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
{
- unsigned int cstatus;
+ void *resp_buf;
+ u32 len;
+ struct ssp_response_iu *ssp_response;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
- cstatus = scic_request_get_controller_status(&request->sci);
+ ssp_response = &sci_req->ssp.rsp;
- dev_dbg(&request->isci_host->pdev->dev,
- "%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR "
- "- controller status = 0x%x\n",
- __func__, request, cstatus);
+ resp_buf = &isci_tmf->resp.resp_iu;
- /* Decode the controller-specific errors; most
- * important is to recognize those conditions in which
- * the target may still have a task outstanding that
- * must be aborted.
- *
- * Note that there are SCU completion codes being
- * named in the decode below for which SCIC has already
- * done work to handle them in a way other than as
- * a controller-specific completion code; these are left
- * in the decode below for completeness sake.
- */
- switch (cstatus) {
- case SCU_TASK_DONE_DMASETUP_DIRERR:
- /* Also SCU_TASK_DONE_SMP_FRM_TYPE_ERR: */
- case SCU_TASK_DONE_XFERCNT_ERR:
- /* Also SCU_TASK_DONE_SMP_UFI_ERR: */
- if (task->task_proto == SAS_PROTOCOL_SMP) {
- /* SCU_TASK_DONE_SMP_UFI_ERR == Task Done. */
- *response_ptr = SAS_TASK_COMPLETE;
+ len = min_t(u32,
+ SSP_RESP_IU_MAX_SIZE,
+ be32_to_cpu(ssp_response->response_data_len));
- /* See if the device has been/is being stopped. Note
- * that we ignore the quiesce state, since we are
- * concerned about the actual device state.
- */
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
- *status_ptr = SAS_DEVICE_UNKNOWN;
- else
- *status_ptr = SAS_ABORTED_TASK;
+ memcpy(resp_buf, ssp_response->resp_data, len);
+}
- request->complete_in_target = true;
+/*
+ * This method implements the action taken when a constructed
+ * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
+ * This method will, if necessary, allocate a TCi for the io request object and
+ * then will, if necessary, copy the constructed TC data into the actual TC
+ * buffer. If everything is successful the post context field is updated with
+ * the TCi so the controller can post the request to the hardware. enum sci_status
+ * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
+ */
+static enum sci_status scic_sds_request_constructed_state_start_handler(
+ struct scic_sds_request *request)
+{
+ struct scu_task_context *task_context;
- *complete_to_host_ptr =
- isci_perform_normal_io_completion;
- } else {
- /* Task in the target is not done. */
- *response_ptr = SAS_TASK_UNDELIVERED;
+ if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+ request->io_tag =
+ scic_controller_allocate_io_tag(request->owning_controller);
+ }
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
- *status_ptr = SAS_DEVICE_UNKNOWN;
- else
- *status_ptr = SAM_STAT_TASK_ABORTED;
+ /* Record the IO Tag in the request */
+ if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
+ task_context = request->task_context_buffer;
- request->complete_in_target = false;
+ task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
- *complete_to_host_ptr =
- isci_perform_error_io_completion;
- }
+ switch (task_context->protocol_type) {
+ case SCU_TASK_CONTEXT_PROTOCOL_SMP:
+ case SCU_TASK_CONTEXT_PROTOCOL_SSP:
+ /* SSP/SMP Frame */
+ task_context->type.ssp.tag = request->io_tag;
+ task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
+ break;
- break;
+ case SCU_TASK_CONTEXT_PROTOCOL_STP:
+ /*
+ * STP/SATA Frame
+ * task_context->type.stp.ncq_tag = request->ncq_tag; */
+ break;
- case SCU_TASK_DONE_CRC_ERR:
- case SCU_TASK_DONE_NAK_CMD_ERR:
- case SCU_TASK_DONE_EXCESS_DATA:
- case SCU_TASK_DONE_UNEXP_FIS:
- /* Also SCU_TASK_DONE_UNEXP_RESP: */
- case SCU_TASK_DONE_VIIT_ENTRY_NV: /* TODO - conditions? */
- case SCU_TASK_DONE_IIT_ENTRY_NV: /* TODO - conditions? */
- case SCU_TASK_DONE_RNCNV_OUTBOUND: /* TODO - conditions? */
- /* These are conditions in which the target
- * has completed the task, so that no cleanup
- * is necessary.
- */
- *response_ptr = SAS_TASK_COMPLETE;
+ case SCU_TASK_CONTEXT_PROTOCOL_NONE:
+ /* / @todo When do we set no protocol type? */
+ break;
- /* See if the device has been/is being stopped. Note
- * that we ignore the quiesce state, since we are
- * concerned about the actual device state.
- */
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
- *status_ptr = SAS_DEVICE_UNKNOWN;
- else
- *status_ptr = SAS_ABORTED_TASK;
+ default:
+ /* This should never happen since we build the IO requests */
+ break;
+ }
- request->complete_in_target = true;
+ /*
+ * Check to see if we need to copy the task context buffer
+ * or have been building into the task context buffer */
+ if (request->was_tag_assigned_by_user == false) {
+ scic_sds_controller_copy_task_context(
+ request->owning_controller, request);
+ }
- *complete_to_host_ptr = isci_perform_normal_io_completion;
- break;
+ /* Add to the post_context the io tag value */
+ request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
+ /* Everything is good go ahead and change state */
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_STARTED);
- /* Note that the only open reject completion codes seen here will be
- * abandon-class codes; all others are automatically retried in the SCU.
- */
- case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION:
+ return SCI_SUCCESS;
+ }
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_WRONG_DEST);
- break;
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+}
- case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION:
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_terminate() request. Since the request
+ * has not yet been posted to the hardware the request transitions to the
+ * completed state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_constructed_state_abort_handler(
+ struct scic_sds_request *request)
+{
+ /*
+ * This request has been terminated by the user make sure that the correct
+ * status code is returned */
+ scic_sds_request_set_status(request,
+ SCU_TASK_DONE_TASK_ABORT,
+ SCI_FAILURE_IO_TERMINATED);
+
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ return SCI_SUCCESS;
+}
- /* Note - the return of AB0 will change when
- * libsas implements detection of zone violations.
- */
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_RESV_AB0);
- break;
+/*
+ * *****************************************************************************
+ * * STARTED STATE HANDLERS
+ * ***************************************************************************** */
- case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1:
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_terminate() request. Since the request
+ * has been posted to the hardware the io request state is changed to the
+ * aborting state. enum sci_status SCI_SUCCESS
+ */
+enum sci_status scic_sds_request_started_state_abort_handler(
+ struct scic_sds_request *request)
+{
+ if (request->has_started_substate_machine)
+ sci_base_state_machine_stop(&request->started_substate_machine);
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_RESV_AB1);
- break;
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_ABORTING);
+ return SCI_SUCCESS;
+}
- case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2:
+/*
+ * scic_sds_request_started_state_tc_completion_handler() - This method process
+ * TC (task context) completions for normal IO request (i.e. Task/Abort
+ * Completions of type 0). This method will update the
+ * SCIC_SDS_IO_REQUEST_T::status field.
+ * @sci_req: This parameter specifies the request for which a completion
+ * occurred.
+ * @completion_code: This parameter specifies the completion code received from
+ * the SCU.
+ *
+ */
+static enum sci_status
+scic_sds_request_started_state_tc_completion_handler(struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ u8 datapres;
+ struct ssp_response_iu *resp_iu;
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_RESV_AB2);
+ /*
+ * TODO: Any SDMA return code of other than 0 is bad
+ * decode 0x003C0000 to determine SDMA status
+ */
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS);
break;
- case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3:
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
+ {
+ /*
+ * There are times when the SCU hardware will return an early
+ * response because the io request specified more data than is
+ * returned by the target device (mode pages, inquiry data,
+ * etc.). We must check the response stats to see if this is
+ * truly a failed request or a good request that just got
+ * completed early.
+ */
+ struct ssp_response_iu *resp = &sci_req->ssp.rsp;
+ ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+ sci_swab32_cpy(&sci_req->ssp.rsp,
+ &sci_req->ssp.rsp,
+ word_cnt);
+
+ if (resp->status == 0) {
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS_IO_DONE_EARLY);
+ } else {
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ }
+ }
+ break;
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_RESV_AB3);
- break;
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
+ {
+ ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
- case SCU_TASK_OPEN_REJECT_BAD_DESTINATION:
+ sci_swab32_cpy(&sci_req->ssp.rsp,
+ &sci_req->ssp.rsp,
+ word_cnt);
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_BAD_DEST);
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
break;
+ }
- case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY:
-
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_STP_NORES);
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
+ /*
+ * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
+ * guaranteed to be received before this completion status is
+ * posted?
+ */
+ resp_iu = &sci_req->ssp.rsp;
+ datapres = resp_iu->datapres;
+
+ if ((datapres == 0x01) || (datapres == 0x02)) {
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ } else
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
break;
- case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED:
-
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_EPROTO);
+ /* only stp device gets suspended. */
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
+ if (sci_req->protocol == SCIC_STP_PROTOCOL) {
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+ SCU_COMPLETION_TL_STATUS_SHIFT,
+ SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
+ } else {
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+ SCU_COMPLETION_TL_STATUS_SHIFT,
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ }
break;
- case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED:
-
- isci_request_set_open_reject_status(
- request, task, response_ptr, status_ptr,
- complete_to_host_ptr, SAS_OREJ_CONN_RATE);
+ /* both stp/ssp device gets suspended */
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+ SCU_COMPLETION_TL_STATUS_SHIFT,
+ SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
break;
- case SCU_TASK_DONE_LL_R_ERR:
- /* Also SCU_TASK_DONE_ACK_NAK_TO: */
- case SCU_TASK_DONE_LL_PERR:
- case SCU_TASK_DONE_LL_SY_TERM:
- /* Also SCU_TASK_DONE_NAK_ERR:*/
- case SCU_TASK_DONE_LL_LF_TERM:
- /* Also SCU_TASK_DONE_DATA_LEN_ERR: */
- case SCU_TASK_DONE_LL_ABORT_ERR:
- case SCU_TASK_DONE_SEQ_INV_TYPE:
- /* Also SCU_TASK_DONE_UNEXP_XR: */
- case SCU_TASK_DONE_XR_IU_LEN_ERR:
- case SCU_TASK_DONE_INV_FIS_LEN:
- /* Also SCU_TASK_DONE_XR_WD_LEN: */
- case SCU_TASK_DONE_SDMA_ERR:
- case SCU_TASK_DONE_OFFSET_ERR:
- case SCU_TASK_DONE_MAX_PLD_ERR:
- case SCU_TASK_DONE_LF_ERR:
- case SCU_TASK_DONE_SMP_RESP_TO_ERR: /* Escalate to dev reset? */
- case SCU_TASK_DONE_SMP_LL_RX_ERR:
- case SCU_TASK_DONE_UNEXP_DATA:
- case SCU_TASK_DONE_UNEXP_SDBFIS:
- case SCU_TASK_DONE_REG_ERR:
- case SCU_TASK_DONE_SDB_ERR:
- case SCU_TASK_DONE_TASK_ABORT:
+ /* neither ssp nor stp gets suspended. */
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
default:
- /* Task in the target is not done. */
- *response_ptr = SAS_TASK_UNDELIVERED;
- *status_ptr = SAM_STAT_TASK_ABORTED;
- request->complete_in_target = false;
-
- *complete_to_host_ptr = isci_perform_error_io_completion;
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+ SCU_COMPLETION_TL_STATUS_SHIFT,
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
break;
}
+
+ /*
+ * TODO: This is probably wrong for ACK/NAK timeout conditions
+ */
+
+ /* In all cases we will treat this as the completion of the IO req. */
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ return SCI_SUCCESS;
}
-/**
- * isci_task_save_for_upper_layer_completion() - This function saves the
- * request for later completion to the upper layer driver.
- * @host: This parameter is a pointer to the host on which the the request
- * should be queued (either as an error or success).
- * @request: This parameter is the completed request.
- * @response: This parameter is the response code for the completed task.
- * @status: This parameter is the status code for the completed task.
- *
- * none.
- */
-static void isci_task_save_for_upper_layer_completion(
- struct isci_host *host,
- struct isci_request *request,
- enum service_response response,
- enum exec_status status,
- enum isci_completion_selection task_notification_selection)
+enum sci_status
+scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
{
- struct sas_task *task = isci_request_access_task(request);
-
- task_notification_selection
- = isci_task_set_completion_status(task, response, status,
- task_notification_selection);
+ if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
+ request->has_started_substate_machine == false)
+ return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
+ else if (request->state_handlers->tc_completion_handler)
+ return request->state_handlers->tc_completion_handler(request, completion_code);
+
+ dev_warn(scic_to_dev(request->owning_controller),
+ "%s: SCIC IO Request given task completion notification %x "
+ "while in wrong state %d\n",
+ __func__,
+ completion_code,
+ sci_base_state_machine_get_state(&request->state_machine));
- /* Tasks aborted specifically by a call to the lldd_abort_task
- * function should not be completed to the host in the regular path.
- */
- switch (task_notification_selection) {
+ return SCI_FAILURE_INVALID_STATE;
- case isci_perform_normal_io_completion:
+}
- /* Normal notification (task_done) */
- dev_dbg(&host->pdev->dev,
- "%s: Normal - task = %p, response=%d (%d), status=%d (%d)\n",
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_frame_handler() request. This method
+ * first determines the frame type received. If this is a response frame then
+ * the response data is copied to the io request response buffer for processing
+ * at completion time. If the frame type is not a response buffer an error is
+ * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
+ */
+static enum sci_status
+scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ u32 *frame_header;
+ struct ssp_frame_hdr ssp_hdr;
+ ssize_t word_cnt;
+
+ status = scic_sds_unsolicited_frame_control_get_header(
+ &(scic_sds_request_get_controller(sci_req)->uf_control),
+ frame_index,
+ (void **)&frame_header);
+
+ word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
+ sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
+
+ if (ssp_hdr.frame_type == SSP_RESPONSE) {
+ struct ssp_response_iu *resp_iu;
+ ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+ status = scic_sds_unsolicited_frame_control_get_buffer(
+ &(scic_sds_request_get_controller(sci_req)->uf_control),
+ frame_index,
+ (void **)&resp_iu);
+
+ sci_swab32_cpy(&sci_req->ssp.rsp,
+ resp_iu, word_cnt);
+
+ resp_iu = &sci_req->ssp.rsp;
+
+ if ((resp_iu->datapres == 0x01) ||
+ (resp_iu->datapres == 0x02)) {
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ } else
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
+ } else {
+ /* This was not a response frame why did it get forwarded? */
+ dev_err(scic_to_dev(sci_req->owning_controller),
+ "%s: SCIC IO Request 0x%p received unexpected "
+ "frame %d type 0x%02x\n",
__func__,
- task,
- task->task_status.resp, response,
- task->task_status.stat, status);
- /* Add to the completed list. */
- list_add(&request->completed_node,
- &host->requests_to_complete);
+ sci_req,
+ frame_index,
+ ssp_hdr.frame_type);
+ }
- /* Take the request off the device's pending request list. */
- list_del_init(&request->dev_node);
- break;
+ /*
+ * In any case we are done with this frame buffer return it to the
+ * controller
+ */
+ scic_sds_controller_release_frame(
+ sci_req->owning_controller, frame_index);
- case isci_perform_aborted_io_completion:
- /* No notification to libsas because this request is
- * already in the abort path.
- */
- dev_warn(&host->pdev->dev,
- "%s: Aborted - task = %p, response=%d (%d), status=%d (%d)\n",
- __func__,
- task,
- task->task_status.resp, response,
- task->task_status.stat, status);
+ return SCI_SUCCESS;
+}
- /* Wake up whatever process was waiting for this
- * request to complete.
- */
- WARN_ON(request->io_request_completion == NULL);
+/*
+ * *****************************************************************************
+ * * COMPLETED STATE HANDLERS
+ * ***************************************************************************** */
- if (request->io_request_completion != NULL) {
- /* Signal whoever is waiting that this
- * request is complete.
- */
- complete(request->io_request_completion);
- }
- break;
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_complete() request. This method frees up
+ * any io request resources that have been allocated and transitions the
+ * request to its final state. Consider stopping the state machine instead of
+ * transitioning to the final state? enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_completed_state_complete_handler(
+ struct scic_sds_request *request)
+{
+ if (request->was_tag_assigned_by_user != true) {
+ scic_controller_free_io_tag(
+ request->owning_controller, request->io_tag);
+ }
- case isci_perform_error_io_completion:
- /* Use sas_task_abort */
- dev_warn(&host->pdev->dev,
- "%s: Error - task = %p, response=%d (%d), status=%d (%d)\n",
- __func__,
- task,
- task->task_status.resp, response,
- task->task_status.stat, status);
- /* Add to the aborted list. */
- list_add(&request->completed_node,
- &host->requests_to_errorback);
- break;
+ if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
+ scic_sds_controller_release_frame(
+ request->owning_controller, request->saved_rx_frame_index);
+ }
- default:
- dev_warn(&host->pdev->dev,
- "%s: Unknown - task = %p, response=%d (%d), status=%d (%d)\n",
- __func__,
- task,
- task->task_status.resp, response,
- task->task_status.stat, status);
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_FINAL);
+ return SCI_SUCCESS;
+}
- /* Add to the error to libsas list. */
- list_add(&request->completed_node,
- &host->requests_to_errorback);
+/*
+ * *****************************************************************************
+ * * ABORTING STATE HANDLERS
+ * ***************************************************************************** */
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_terminate() request. This method is the
+ * io request aborting state abort handlers. On receipt of a multiple
+ * terminate requests the io request will transition to the completed state.
+ * This should not happen in normal operation. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_aborting_state_abort_handler(
+ struct scic_sds_request *request)
+{
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ return SCI_SUCCESS;
+}
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_task_completion() request. This method
+ * decodes the completion type waiting for the abort task complete
+ * notification. When the abort task complete is received the io request
+ * transitions to the completed state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
+ case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
+ );
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+
+ default:
+ /*
+ * Unless we get some strange error wait for the task abort to complete
+ * TODO: Should there be a state change for this completion? */
break;
}
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_frame_handler() request. This method
+ * discards the unsolicited frame since we are waiting for the abort task
+ * completion. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_aborting_state_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
+
+ scic_sds_controller_release_frame(
+ sci_req->owning_controller, frame_index);
+
+ return SCI_SUCCESS;
}
+static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
+ [SCI_BASE_REQUEST_STATE_INITIAL] = {
+ },
+ [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
+ .start_handler = scic_sds_request_constructed_state_start_handler,
+ .abort_handler = scic_sds_request_constructed_state_abort_handler,
+ },
+ [SCI_BASE_REQUEST_STATE_STARTED] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler,
+ .frame_handler = scic_sds_request_started_state_frame_handler,
+ },
+ [SCI_BASE_REQUEST_STATE_COMPLETED] = {
+ .complete_handler = scic_sds_request_completed_state_complete_handler,
+ },
+ [SCI_BASE_REQUEST_STATE_ABORTING] = {
+ .abort_handler = scic_sds_request_aborting_state_abort_handler,
+ .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler,
+ .frame_handler = scic_sds_request_aborting_state_frame_handler,
+ },
+ [SCI_BASE_REQUEST_STATE_FINAL] = {
+ },
+};
+
+
/**
- * isci_request_io_request_complete() - This function is called by the sci core
- * when an io request completes.
- * @isci_host: This parameter specifies the ISCI host object
- * @request: This parameter is the completed isci_request object.
- * @completion_status: This parameter specifies the completion status from the
- * sci core.
+ * isci_request_process_response_iu() - This function sets the status and
+ * response iu, in the task struct, from the request object for the upper
+ * layer driver.
+ * @sas_task: This parameter is the task struct from the upper layer driver.
+ * @resp_iu: This parameter points to the response iu of the completed request.
+ * @dev: This parameter specifies the linux device struct.
*
* none.
*/
-void isci_request_io_request_complete(
- struct isci_host *isci_host,
- struct isci_request *request,
- enum sci_io_status completion_status)
+static void isci_request_process_response_iu(
+ struct sas_task *task,
+ struct ssp_response_iu *resp_iu,
+ struct device *dev)
{
- struct sas_task *task = isci_request_access_task(request);
- struct ssp_response_iu *resp_iu;
- void *resp_buf;
- unsigned long task_flags;
- struct isci_remote_device *isci_device = request->isci_device;
- enum service_response response = SAS_TASK_UNDELIVERED;
- enum exec_status status = SAS_ABORTED_TASK;
- enum isci_request_status request_status;
- enum isci_completion_selection complete_to_host
- = isci_perform_normal_io_completion;
-
- dev_dbg(&isci_host->pdev->dev,
- "%s: request = %p, task = %p,\n"
- "task->data_dir = %d completion_status = 0x%x\n",
+ dev_dbg(dev,
+ "%s: resp_iu = %p "
+ "resp_iu->status = 0x%x,\nresp_iu->datapres = %d "
+ "resp_iu->response_data_len = %x, "
+ "resp_iu->sense_data_len = %x\nrepsonse data: ",
__func__,
- request,
- task,
- task->data_dir,
- completion_status);
+ resp_iu,
+ resp_iu->status,
+ resp_iu->datapres,
+ resp_iu->response_data_len,
+ resp_iu->sense_data_len);
- spin_lock(&request->state_lock);
- request_status = isci_request_get_state(request);
+ task->task_status.stat = resp_iu->status;
- /* Decode the request status. Note that if the request has been
- * aborted by a task management function, we don't care
- * what the status is.
- */
- switch (request_status) {
+ /* libsas updates the task status fields based on the response iu. */
+ sas_ssp_task_response(dev, task, resp_iu);
+}
- case aborted:
- /* "aborted" indicates that the request was aborted by a task
- * management function, since once a task management request is
- * perfomed by the device, the request only completes because
- * of the subsequent driver terminate.
- *
- * Aborted also means an external thread is explicitly managing
- * this request, so that we do not complete it up the stack.
- *
- * The target is still there (since the TMF was successful).
- */
- request->complete_in_target = true;
- response = SAS_TASK_COMPLETE;
+/**
+ * isci_request_set_open_reject_status() - This function prepares the I/O
+ * completion for OPEN_REJECT conditions.
+ * @request: This parameter is the completed isci_request object.
+ * @response_ptr: This parameter specifies the service response for the I/O.
+ * @status_ptr: This parameter specifies the exec status for the I/O.
+ * @complete_to_host_ptr: This parameter specifies the action to be taken by
+ * the LLDD with respect to completing this request or forcing an abort
+ * condition on the I/O.
+ * @open_rej_reason: This parameter specifies the encoded reason for the
+ * abandon-class reject.
+ *
+ * none.
+ */
+static void isci_request_set_open_reject_status(
+ struct isci_request *request,
+ struct sas_task *task,
+ enum service_response *response_ptr,
+ enum exec_status *status_ptr,
+ enum isci_completion_selection *complete_to_host_ptr,
+ enum sas_open_rej_reason open_rej_reason)
+{
+ /* Task in the target is done. */
+ request->complete_in_target = true;
+ *response_ptr = SAS_TASK_UNDELIVERED;
+ *status_ptr = SAS_OPEN_REJECT;
+ *complete_to_host_ptr = isci_perform_normal_io_completion;
+ task->task_status.open_rej_reason = open_rej_reason;
+}
- /* See if the device has been/is being stopped. Note
- * that we ignore the quiesce state, since we are
- * concerned about the actual device state.
- */
- if ((isci_device->status == isci_stopping)
- || (isci_device->status == isci_stopped)
- )
- status = SAS_DEVICE_UNKNOWN;
- else
- status = SAS_ABORTED_TASK;
+/**
+ * isci_request_handle_controller_specific_errors() - This function decodes
+ * controller-specific I/O completion error conditions.
+ * @request: This parameter is the completed isci_request object.
+ * @response_ptr: This parameter specifies the service response for the I/O.
+ * @status_ptr: This parameter specifies the exec status for the I/O.
+ * @complete_to_host_ptr: This parameter specifies the action to be taken by
+ * the LLDD with respect to completing this request or forcing an abort
+ * condition on the I/O.
+ *
+ * none.
+ */
+static void isci_request_handle_controller_specific_errors(
+ struct isci_remote_device *isci_device,
+ struct isci_request *request,
+ struct sas_task *task,
+ enum service_response *response_ptr,
+ enum exec_status *status_ptr,
+ enum isci_completion_selection *complete_to_host_ptr)
+{
+ unsigned int cstatus;
- complete_to_host = isci_perform_aborted_io_completion;
- /* This was an aborted request. */
+ cstatus = request->sci.scu_status;
- spin_unlock(&request->state_lock);
- break;
+ dev_dbg(&request->isci_host->pdev->dev,
+ "%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR "
+ "- controller status = 0x%x\n",
+ __func__, request, cstatus);
- case aborting:
- /* aborting means that the task management function tried and
- * failed to abort the request. We need to note the request
- * as SAS_TASK_UNDELIVERED, so that the scsi mid layer marks the
- * target as down.
- *
- * Aborting also means an external thread is explicitly managing
- * this request, so that we do not complete it up the stack.
- */
- request->complete_in_target = true;
- response = SAS_TASK_UNDELIVERED;
+ /* Decode the controller-specific errors; most
+ * important is to recognize those conditions in which
+ * the target may still have a task outstanding that
+ * must be aborted.
+ *
+ * Note that there are SCU completion codes being
+ * named in the decode below for which SCIC has already
+ * done work to handle them in a way other than as
+ * a controller-specific completion code; these are left
+ * in the decode below for completeness sake.
+ */
+ switch (cstatus) {
+ case SCU_TASK_DONE_DMASETUP_DIRERR:
+ /* Also SCU_TASK_DONE_SMP_FRM_TYPE_ERR: */
+ case SCU_TASK_DONE_XFERCNT_ERR:
+ /* Also SCU_TASK_DONE_SMP_UFI_ERR: */
+ if (task->task_proto == SAS_PROTOCOL_SMP) {
+ /* SCU_TASK_DONE_SMP_UFI_ERR == Task Done. */
+ *response_ptr = SAS_TASK_COMPLETE;
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
- /* The device has been /is being stopped. Note that
- * we ignore the quiesce state, since we are
+ /* See if the device has been/is being stopped. Note
+ * that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- status = SAS_DEVICE_UNKNOWN;
- else
- status = SAS_PHY_DOWN;
+ if ((isci_device->status == isci_stopping) ||
+ (isci_device->status == isci_stopped))
+ *status_ptr = SAS_DEVICE_UNKNOWN;
+ else
+ *status_ptr = SAS_ABORTED_TASK;
- complete_to_host = isci_perform_aborted_io_completion;
+ request->complete_in_target = true;
- /* This was an aborted request. */
+ *complete_to_host_ptr =
+ isci_perform_normal_io_completion;
+ } else {
+ /* Task in the target is not done. */
+ *response_ptr = SAS_TASK_UNDELIVERED;
- spin_unlock(&request->state_lock);
- break;
+ if ((isci_device->status == isci_stopping) ||
+ (isci_device->status == isci_stopped))
+ *status_ptr = SAS_DEVICE_UNKNOWN;
+ else
+ *status_ptr = SAM_STAT_TASK_ABORTED;
- case terminating:
+ request->complete_in_target = false;
- /* This was an terminated request. This happens when
- * the I/O is being terminated because of an action on
- * the device (reset, tear down, etc.), and the I/O needs
- * to be completed up the stack.
+ *complete_to_host_ptr =
+ isci_perform_error_io_completion;
+ }
+
+ break;
+
+ case SCU_TASK_DONE_CRC_ERR:
+ case SCU_TASK_DONE_NAK_CMD_ERR:
+ case SCU_TASK_DONE_EXCESS_DATA:
+ case SCU_TASK_DONE_UNEXP_FIS:
+ /* Also SCU_TASK_DONE_UNEXP_RESP: */
+ case SCU_TASK_DONE_VIIT_ENTRY_NV: /* TODO - conditions? */
+ case SCU_TASK_DONE_IIT_ENTRY_NV: /* TODO - conditions? */
+ case SCU_TASK_DONE_RNCNV_OUTBOUND: /* TODO - conditions? */
+ /* These are conditions in which the target
+ * has completed the task, so that no cleanup
+ * is necessary.
*/
- request->complete_in_target = true;
- response = SAS_TASK_UNDELIVERED;
+ *response_ptr = SAS_TASK_COMPLETE;
/* See if the device has been/is being stopped. Note
* that we ignore the quiesce state, since we are
*/
if ((isci_device->status == isci_stopping) ||
(isci_device->status == isci_stopped))
- status = SAS_DEVICE_UNKNOWN;
+ *status_ptr = SAS_DEVICE_UNKNOWN;
else
- status = SAS_ABORTED_TASK;
-
- complete_to_host = isci_perform_aborted_io_completion;
+ *status_ptr = SAS_ABORTED_TASK;
- /* This was a terminated request. */
+ request->complete_in_target = true;
- spin_unlock(&request->state_lock);
+ *complete_to_host_ptr = isci_perform_normal_io_completion;
break;
- default:
- /* The request is done from an SCU HW perspective. */
- request->status = completed;
+ /* Note that the only open reject completion codes seen here will be
+ * abandon-class codes; all others are automatically retried in the SCU.
+ */
+ case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION:
- spin_unlock(&request->state_lock);
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_WRONG_DEST);
+ break;
- /* This is an active request being completed from the core. */
- switch (completion_status) {
+ case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION:
- case SCI_IO_FAILURE_RESPONSE_VALID:
- dev_dbg(&isci_host->pdev->dev,
- "%s: SCI_IO_FAILURE_RESPONSE_VALID (%p/%p)\n",
- __func__,
- request,
- task);
+ /* Note - the return of AB0 will change when
+ * libsas implements detection of zone violations.
+ */
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_RESV_AB0);
+ break;
- if (sas_protocol_ata(task->task_proto)) {
- resp_buf = &request->sci.stp.rsp;
- isci_request_process_stp_response(task,
- resp_buf);
- } else if (SAS_PROTOCOL_SSP == task->task_proto) {
+ case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1:
- /* crack the iu response buffer. */
- resp_iu = &request->sci.ssp.rsp;
- isci_request_process_response_iu(task, resp_iu,
- &isci_host->pdev->dev);
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_RESV_AB1);
+ break;
- } else if (SAS_PROTOCOL_SMP == task->task_proto) {
+ case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2:
- dev_err(&isci_host->pdev->dev,
- "%s: SCI_IO_FAILURE_RESPONSE_VALID: "
- "SAS_PROTOCOL_SMP protocol\n",
- __func__);
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_RESV_AB2);
+ break;
- } else
- dev_err(&isci_host->pdev->dev,
- "%s: unknown protocol\n", __func__);
+ case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3:
- /* use the task status set in the task struct by the
- * isci_request_process_response_iu call.
- */
- request->complete_in_target = true;
- response = task->task_status.resp;
- status = task->task_status.stat;
- break;
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_RESV_AB3);
+ break;
- case SCI_IO_SUCCESS:
- case SCI_IO_SUCCESS_IO_DONE_EARLY:
+ case SCU_TASK_OPEN_REJECT_BAD_DESTINATION:
- response = SAS_TASK_COMPLETE;
- status = SAM_STAT_GOOD;
- request->complete_in_target = true;
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_BAD_DEST);
+ break;
- if (task->task_proto == SAS_PROTOCOL_SMP) {
- void *rsp = &request->sci.smp.rsp;
+ case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY:
- dev_dbg(&isci_host->pdev->dev,
- "%s: SMP protocol completion\n",
- __func__);
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_STP_NORES);
+ break;
- sg_copy_from_buffer(
- &task->smp_task.smp_resp, 1,
- rsp, sizeof(struct smp_resp));
- } else if (completion_status
- == SCI_IO_SUCCESS_IO_DONE_EARLY) {
+ case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED:
- /* This was an SSP / STP / SATA transfer.
- * There is a possibility that less data than
- * the maximum was transferred.
- */
- u32 transferred_length
- = scic_io_request_get_number_of_bytes_transferred(&request->sci);
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_EPROTO);
+ break;
- task->task_status.residual
- = task->total_xfer_len - transferred_length;
+ case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED:
- /* If there were residual bytes, call this an
- * underrun.
- */
- if (task->task_status.residual != 0)
- status = SAS_DATA_UNDERRUN;
+ isci_request_set_open_reject_status(
+ request, task, response_ptr, status_ptr,
+ complete_to_host_ptr, SAS_OREJ_CONN_RATE);
+ break;
- dev_dbg(&isci_host->pdev->dev,
- "%s: SCI_IO_SUCCESS_IO_DONE_EARLY %d\n",
- __func__,
- status);
+ case SCU_TASK_DONE_LL_R_ERR:
+ /* Also SCU_TASK_DONE_ACK_NAK_TO: */
+ case SCU_TASK_DONE_LL_PERR:
+ case SCU_TASK_DONE_LL_SY_TERM:
+ /* Also SCU_TASK_DONE_NAK_ERR:*/
+ case SCU_TASK_DONE_LL_LF_TERM:
+ /* Also SCU_TASK_DONE_DATA_LEN_ERR: */
+ case SCU_TASK_DONE_LL_ABORT_ERR:
+ case SCU_TASK_DONE_SEQ_INV_TYPE:
+ /* Also SCU_TASK_DONE_UNEXP_XR: */
+ case SCU_TASK_DONE_XR_IU_LEN_ERR:
+ case SCU_TASK_DONE_INV_FIS_LEN:
+ /* Also SCU_TASK_DONE_XR_WD_LEN: */
+ case SCU_TASK_DONE_SDMA_ERR:
+ case SCU_TASK_DONE_OFFSET_ERR:
+ case SCU_TASK_DONE_MAX_PLD_ERR:
+ case SCU_TASK_DONE_LF_ERR:
+ case SCU_TASK_DONE_SMP_RESP_TO_ERR: /* Escalate to dev reset? */
+ case SCU_TASK_DONE_SMP_LL_RX_ERR:
+ case SCU_TASK_DONE_UNEXP_DATA:
+ case SCU_TASK_DONE_UNEXP_SDBFIS:
+ case SCU_TASK_DONE_REG_ERR:
+ case SCU_TASK_DONE_SDB_ERR:
+ case SCU_TASK_DONE_TASK_ABORT:
+ default:
+ /* Task in the target is not done. */
+ *response_ptr = SAS_TASK_UNDELIVERED;
+ *status_ptr = SAM_STAT_TASK_ABORTED;
+ request->complete_in_target = false;
- } else
- dev_dbg(&isci_host->pdev->dev,
- "%s: SCI_IO_SUCCESS\n",
- __func__);
+ *complete_to_host_ptr = isci_perform_error_io_completion;
+ break;
+ }
+}
- break;
+/**
+ * isci_task_save_for_upper_layer_completion() - This function saves the
+ * request for later completion to the upper layer driver.
+ * @host: This parameter is a pointer to the host on which the the request
+ * should be queued (either as an error or success).
+ * @request: This parameter is the completed request.
+ * @response: This parameter is the response code for the completed task.
+ * @status: This parameter is the status code for the completed task.
+ *
+ * none.
+ */
+static void isci_task_save_for_upper_layer_completion(
+ struct isci_host *host,
+ struct isci_request *request,
+ enum service_response response,
+ enum exec_status status,
+ enum isci_completion_selection task_notification_selection)
+{
+ struct sas_task *task = isci_request_access_task(request);
- case SCI_IO_FAILURE_TERMINATED:
- dev_dbg(&isci_host->pdev->dev,
- "%s: SCI_IO_FAILURE_TERMINATED (%p/%p)\n",
- __func__,
- request,
- task);
+ task_notification_selection
+ = isci_task_set_completion_status(task, response, status,
+ task_notification_selection);
- /* The request was terminated explicitly. No handling
- * is needed in the SCSI error handler path.
- */
- request->complete_in_target = true;
- response = SAS_TASK_UNDELIVERED;
+ /* Tasks aborted specifically by a call to the lldd_abort_task
+ * function should not be completed to the host in the regular path.
+ */
+ switch (task_notification_selection) {
- /* See if the device has been/is being stopped. Note
- * that we ignore the quiesce state, since we are
- * concerned about the actual device state.
- */
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
- status = SAS_DEVICE_UNKNOWN;
- else
- status = SAS_ABORTED_TASK;
+ case isci_perform_normal_io_completion:
- complete_to_host = isci_perform_normal_io_completion;
- break;
+ /* Normal notification (task_done) */
+ dev_dbg(&host->pdev->dev,
+ "%s: Normal - task = %p, response=%d (%d), status=%d (%d)\n",
+ __func__,
+ task,
+ task->task_status.resp, response,
+ task->task_status.stat, status);
+ /* Add to the completed list. */
+ list_add(&request->completed_node,
+ &host->requests_to_complete);
- case SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR:
+ /* Take the request off the device's pending request list. */
+ list_del_init(&request->dev_node);
+ break;
- isci_request_handle_controller_specific_errors(
- isci_device, request, task, &response, &status,
- &complete_to_host);
+ case isci_perform_aborted_io_completion:
+ /* No notification to libsas because this request is
+ * already in the abort path.
+ */
+ dev_warn(&host->pdev->dev,
+ "%s: Aborted - task = %p, response=%d (%d), status=%d (%d)\n",
+ __func__,
+ task,
+ task->task_status.resp, response,
+ task->task_status.stat, status);
- break;
+ /* Wake up whatever process was waiting for this
+ * request to complete.
+ */
+ WARN_ON(request->io_request_completion == NULL);
- case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED:
- /* This is a special case, in that the I/O completion
- * is telling us that the device needs a reset.
- * In order for the device reset condition to be
- * noticed, the I/O has to be handled in the error
- * handler. Set the reset flag and cause the
- * SCSI error thread to be scheduled.
- */
- spin_lock_irqsave(&task->task_state_lock, task_flags);
- task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+ if (request->io_request_completion != NULL) {
+
+ /* Signal whoever is waiting that this
+ * request is complete.
+ */
+ complete(request->io_request_completion);
+ }
+ break;
+
+ case isci_perform_error_io_completion:
+ /* Use sas_task_abort */
+ dev_warn(&host->pdev->dev,
+ "%s: Error - task = %p, response=%d (%d), status=%d (%d)\n",
+ __func__,
+ task,
+ task->task_status.resp, response,
+ task->task_status.stat, status);
+ /* Add to the aborted list. */
+ list_add(&request->completed_node,
+ &host->requests_to_errorback);
+ break;
+
+ default:
+ dev_warn(&host->pdev->dev,
+ "%s: Unknown - task = %p, response=%d (%d), status=%d (%d)\n",
+ __func__,
+ task,
+ task->task_status.resp, response,
+ task->task_status.stat, status);
+
+ /* Add to the error to libsas list. */
+ list_add(&request->completed_node,
+ &host->requests_to_errorback);
+ break;
+ }
+}
+
+static void isci_request_io_request_complete(struct isci_host *isci_host,
+ struct isci_request *request,
+ enum sci_io_status completion_status)
+{
+ struct sas_task *task = isci_request_access_task(request);
+ struct ssp_response_iu *resp_iu;
+ void *resp_buf;
+ unsigned long task_flags;
+ struct isci_remote_device *isci_device = request->isci_device;
+ enum service_response response = SAS_TASK_UNDELIVERED;
+ enum exec_status status = SAS_ABORTED_TASK;
+ enum isci_request_status request_status;
+ enum isci_completion_selection complete_to_host
+ = isci_perform_normal_io_completion;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: request = %p, task = %p,\n"
+ "task->data_dir = %d completion_status = 0x%x\n",
+ __func__,
+ request,
+ task,
+ task->data_dir,
+ completion_status);
+
+ spin_lock(&request->state_lock);
+ request_status = isci_request_get_state(request);
+
+ /* Decode the request status. Note that if the request has been
+ * aborted by a task management function, we don't care
+ * what the status is.
+ */
+ switch (request_status) {
+
+ case aborted:
+ /* "aborted" indicates that the request was aborted by a task
+ * management function, since once a task management request is
+ * perfomed by the device, the request only completes because
+ * of the subsequent driver terminate.
+ *
+ * Aborted also means an external thread is explicitly managing
+ * this request, so that we do not complete it up the stack.
+ *
+ * The target is still there (since the TMF was successful).
+ */
+ request->complete_in_target = true;
+ response = SAS_TASK_COMPLETE;
+
+ /* See if the device has been/is being stopped. Note
+ * that we ignore the quiesce state, since we are
+ * concerned about the actual device state.
+ */
+ if ((isci_device->status == isci_stopping)
+ || (isci_device->status == isci_stopped)
+ )
+ status = SAS_DEVICE_UNKNOWN;
+ else
+ status = SAS_ABORTED_TASK;
+
+ complete_to_host = isci_perform_aborted_io_completion;
+ /* This was an aborted request. */
+
+ spin_unlock(&request->state_lock);
+ break;
+
+ case aborting:
+ /* aborting means that the task management function tried and
+ * failed to abort the request. We need to note the request
+ * as SAS_TASK_UNDELIVERED, so that the scsi mid layer marks the
+ * target as down.
+ *
+ * Aborting also means an external thread is explicitly managing
+ * this request, so that we do not complete it up the stack.
+ */
+ request->complete_in_target = true;
+ response = SAS_TASK_UNDELIVERED;
+
+ if ((isci_device->status == isci_stopping) ||
+ (isci_device->status == isci_stopped))
+ /* The device has been /is being stopped. Note that
+ * we ignore the quiesce state, since we are
+ * concerned about the actual device state.
+ */
+ status = SAS_DEVICE_UNKNOWN;
+ else
+ status = SAS_PHY_DOWN;
+
+ complete_to_host = isci_perform_aborted_io_completion;
+
+ /* This was an aborted request. */
+
+ spin_unlock(&request->state_lock);
+ break;
+
+ case terminating:
+
+ /* This was an terminated request. This happens when
+ * the I/O is being terminated because of an action on
+ * the device (reset, tear down, etc.), and the I/O needs
+ * to be completed up the stack.
+ */
+ request->complete_in_target = true;
+ response = SAS_TASK_UNDELIVERED;
+
+ /* See if the device has been/is being stopped. Note
+ * that we ignore the quiesce state, since we are
+ * concerned about the actual device state.
+ */
+ if ((isci_device->status == isci_stopping) ||
+ (isci_device->status == isci_stopped))
+ status = SAS_DEVICE_UNKNOWN;
+ else
+ status = SAS_ABORTED_TASK;
+
+ complete_to_host = isci_perform_aborted_io_completion;
+
+ /* This was a terminated request. */
+
+ spin_unlock(&request->state_lock);
+ break;
+
+ default:
+
+ /* The request is done from an SCU HW perspective. */
+ request->status = completed;
+
+ spin_unlock(&request->state_lock);
+
+ /* This is an active request being completed from the core. */
+ switch (completion_status) {
+
+ case SCI_IO_FAILURE_RESPONSE_VALID:
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: SCI_IO_FAILURE_RESPONSE_VALID (%p/%p)\n",
+ __func__,
+ request,
+ task);
+
+ if (sas_protocol_ata(task->task_proto)) {
+ resp_buf = &request->sci.stp.rsp;
+ isci_request_process_stp_response(task,
+ resp_buf);
+ } else if (SAS_PROTOCOL_SSP == task->task_proto) {
+
+ /* crack the iu response buffer. */
+ resp_iu = &request->sci.ssp.rsp;
+ isci_request_process_response_iu(task, resp_iu,
+ &isci_host->pdev->dev);
+
+ } else if (SAS_PROTOCOL_SMP == task->task_proto) {
+
+ dev_err(&isci_host->pdev->dev,
+ "%s: SCI_IO_FAILURE_RESPONSE_VALID: "
+ "SAS_PROTOCOL_SMP protocol\n",
+ __func__);
+
+ } else
+ dev_err(&isci_host->pdev->dev,
+ "%s: unknown protocol\n", __func__);
+
+ /* use the task status set in the task struct by the
+ * isci_request_process_response_iu call.
+ */
+ request->complete_in_target = true;
+ response = task->task_status.resp;
+ status = task->task_status.stat;
+ break;
+
+ case SCI_IO_SUCCESS:
+ case SCI_IO_SUCCESS_IO_DONE_EARLY:
+
+ response = SAS_TASK_COMPLETE;
+ status = SAM_STAT_GOOD;
+ request->complete_in_target = true;
+
+ if (task->task_proto == SAS_PROTOCOL_SMP) {
+ void *rsp = &request->sci.smp.rsp;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: SMP protocol completion\n",
+ __func__);
+
+ sg_copy_from_buffer(
+ &task->smp_task.smp_resp, 1,
+ rsp, sizeof(struct smp_resp));
+ } else if (completion_status
+ == SCI_IO_SUCCESS_IO_DONE_EARLY) {
+
+ /* This was an SSP / STP / SATA transfer.
+ * There is a possibility that less data than
+ * the maximum was transferred.
+ */
+ u32 transferred_length = sci_req_tx_bytes(&request->sci);
+
+ task->task_status.residual
+ = task->total_xfer_len - transferred_length;
+
+ /* If there were residual bytes, call this an
+ * underrun.
+ */
+ if (task->task_status.residual != 0)
+ status = SAS_DATA_UNDERRUN;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: SCI_IO_SUCCESS_IO_DONE_EARLY %d\n",
+ __func__,
+ status);
+
+ } else
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: SCI_IO_SUCCESS\n",
+ __func__);
+
+ break;
+
+ case SCI_IO_FAILURE_TERMINATED:
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: SCI_IO_FAILURE_TERMINATED (%p/%p)\n",
+ __func__,
+ request,
+ task);
+
+ /* The request was terminated explicitly. No handling
+ * is needed in the SCSI error handler path.
+ */
+ request->complete_in_target = true;
+ response = SAS_TASK_UNDELIVERED;
+
+ /* See if the device has been/is being stopped. Note
+ * that we ignore the quiesce state, since we are
+ * concerned about the actual device state.
+ */
+ if ((isci_device->status == isci_stopping) ||
+ (isci_device->status == isci_stopped))
+ status = SAS_DEVICE_UNKNOWN;
+ else
+ status = SAS_ABORTED_TASK;
+
+ complete_to_host = isci_perform_normal_io_completion;
+ break;
+
+ case SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR:
+
+ isci_request_handle_controller_specific_errors(
+ isci_device, request, task, &response, &status,
+ &complete_to_host);
+
+ break;
+
+ case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED:
+ /* This is a special case, in that the I/O completion
+ * is telling us that the device needs a reset.
+ * In order for the device reset condition to be
+ * noticed, the I/O has to be handled in the error
+ * handler. Set the reset flag and cause the
+ * SCSI error thread to be scheduled.
+ */
+ spin_lock_irqsave(&task->task_state_lock, task_flags);
+ task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
spin_unlock_irqrestore(&task->task_state_lock, task_flags);
- /* Fail the I/O. */
- response = SAS_TASK_UNDELIVERED;
- status = SAM_STAT_TASK_ABORTED;
+ /* Fail the I/O. */
+ response = SAS_TASK_UNDELIVERED;
+ status = SAM_STAT_TASK_ABORTED;
+
+ complete_to_host = isci_perform_error_io_completion;
+ request->complete_in_target = false;
+ break;
+
+ default:
+ /* Catch any otherwise unhandled error codes here. */
+ dev_warn(&isci_host->pdev->dev,
+ "%s: invalid completion code: 0x%x - "
+ "isci_request = %p\n",
+ __func__, completion_status, request);
+
+ response = SAS_TASK_UNDELIVERED;
+
+ /* See if the device has been/is being stopped. Note
+ * that we ignore the quiesce state, since we are
+ * concerned about the actual device state.
+ */
+ if ((isci_device->status == isci_stopping) ||
+ (isci_device->status == isci_stopped))
+ status = SAS_DEVICE_UNKNOWN;
+ else
+ status = SAS_ABORTED_TASK;
+
+ complete_to_host = isci_perform_error_io_completion;
+ request->complete_in_target = false;
+ break;
+ }
+ break;
+ }
+
+ isci_request_unmap_sgl(request, isci_host->pdev);
+
+ /* Put the completed request on the correct list */
+ isci_task_save_for_upper_layer_completion(isci_host, request, response,
+ status, complete_to_host
+ );
+
+ /* complete the io request to the core. */
+ scic_controller_complete_io(&isci_host->sci,
+ &isci_device->sci,
+ &request->sci);
+ /* set terminated handle so it cannot be completed or
+ * terminated again, and to cause any calls into abort
+ * task to recognize the already completed case.
+ */
+ request->terminated = true;
+
+ isci_host_can_dequeue(isci_host, 1);
+}
+
+/**
+ * scic_sds_request_initial_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ * transition is occurring.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
+ * base request is constructed. Entry into the initial state sets all handlers
+ * for the io request object to their default handlers. none
+ */
+static void scic_sds_request_initial_state_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCI_BASE_REQUEST_STATE_INITIAL
+ );
+}
+
+/**
+ * scic_sds_request_constructed_state_enter() -
+ * @object: The io request object that is to enter the constructed state.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
+ * for the the constructed state. none
+ */
+static void scic_sds_request_constructed_state_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED
+ );
+}
+
+/**
+ * scic_sds_request_started_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
+ * SCSI Task request we must enter the started substate machine. none
+ */
+static void scic_sds_request_started_state_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCI_BASE_REQUEST_STATE_STARTED
+ );
+
+ /*
+ * Most of the request state machines have a started substate machine so
+ * start its execution on the entry to the started state. */
+ if (sci_req->has_started_substate_machine == true)
+ sci_base_state_machine_start(&sci_req->started_substate_machine);
+}
+
+/**
+ * scic_sds_request_started_state_exit() -
+ * @object: This parameter specifies the base object for which the state
+ * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
+ * object.
+ *
+ * This method implements the actions taken when exiting the
+ * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
+ * to stop the started substate machine. none
+ */
+static void scic_sds_request_started_state_exit(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ if (sci_req->has_started_substate_machine == true)
+ sci_base_state_machine_stop(&sci_req->started_substate_machine);
+}
+
+/**
+ * scic_sds_request_completed_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
+ * object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the
+ * SCIC_SDS_IO_REQUEST has completed. The method will decode the request
+ * completion status and convert it to an enum sci_status to return in the
+ * completion callback function. none
+ */
+static void scic_sds_request_completed_state_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+ struct scic_sds_controller *scic =
+ scic_sds_request_get_controller(sci_req);
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+
+ SET_STATE_HANDLER(sci_req,
+ scic_sds_request_state_handler_table,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Tell the SCI_USER that the IO request is complete */
+ if (sci_req->is_task_management_request == false)
+ isci_request_io_request_complete(ihost, ireq,
+ sci_req->sci_status);
+ else
+ isci_task_request_complete(ihost, ireq, sci_req->sci_status);
+}
+
+/**
+ * scic_sds_request_aborting_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
+ * object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_ABORTING state. none
+ */
+static void scic_sds_request_aborting_state_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ /* Setting the abort bit in the Task Context is required by the silicon. */
+ sci_req->task_context_buffer->abort = 1;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCI_BASE_REQUEST_STATE_ABORTING
+ );
+}
+
+/**
+ * scic_sds_request_final_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
+ * state handlers in place. none
+ */
+static void scic_sds_request_final_state_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCI_BASE_REQUEST_STATE_FINAL
+ );
+}
+
+static const struct sci_base_state scic_sds_request_state_table[] = {
+ [SCI_BASE_REQUEST_STATE_INITIAL] = {
+ .enter_state = scic_sds_request_initial_state_enter,
+ },
+ [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
+ .enter_state = scic_sds_request_constructed_state_enter,
+ },
+ [SCI_BASE_REQUEST_STATE_STARTED] = {
+ .enter_state = scic_sds_request_started_state_enter,
+ .exit_state = scic_sds_request_started_state_exit
+ },
+ [SCI_BASE_REQUEST_STATE_COMPLETED] = {
+ .enter_state = scic_sds_request_completed_state_enter,
+ },
+ [SCI_BASE_REQUEST_STATE_ABORTING] = {
+ .enter_state = scic_sds_request_aborting_state_enter,
+ },
+ [SCI_BASE_REQUEST_STATE_FINAL] = {
+ .enter_state = scic_sds_request_final_state_enter,
+ },
+};
+
+static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev,
+ u16 io_tag, struct scic_sds_request *sci_req)
+{
+ sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
+ scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
+ sci_base_state_machine_start(&sci_req->state_machine);
+
+ sci_req->io_tag = io_tag;
+ sci_req->owning_controller = scic;
+ sci_req->target_device = sci_dev;
+ sci_req->has_started_substate_machine = false;
+ sci_req->protocol = SCIC_NO_PROTOCOL;
+ sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
+ sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
+
+ sci_req->sci_status = SCI_SUCCESS;
+ sci_req->scu_status = 0;
+ sci_req->post_context = 0xFFFFFFFF;
+
+ sci_req->is_task_management_request = false;
+
+ if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+ sci_req->was_tag_assigned_by_user = false;
+ sci_req->task_context_buffer = NULL;
+ } else {
+ sci_req->was_tag_assigned_by_user = true;
+
+ sci_req->task_context_buffer =
+ scic_sds_controller_get_task_context_buffer(scic, io_tag);
+ }
+}
+
+static enum sci_status
+scic_io_request_construct(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev,
+ u16 io_tag, struct scic_sds_request *sci_req)
+{
+ struct domain_device *dev = sci_dev_to_domain(sci_dev);
+ enum sci_status status = SCI_SUCCESS;
+
+ /* Build the common part of the request */
+ scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
+
+ if (sci_dev->rnc.remote_node_index ==
+ SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
+ return SCI_FAILURE_INVALID_REMOTE_DEVICE;
+
+ if (dev->dev_type == SAS_END_DEV)
+ scic_sds_ssp_io_request_assign_buffers(sci_req);
+ else if ((dev->dev_type == SATA_DEV) ||
+ (dev->tproto & SAS_PROTOCOL_STP)) {
+ scic_sds_stp_request_assign_buffers(sci_req);
+ memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd));
+ } else if (dev_is_expander(dev)) {
+ scic_sds_smp_request_assign_buffers(sci_req);
+ memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd));
+ } else
+ status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+ if (status == SCI_SUCCESS) {
+ memset(sci_req->task_context_buffer, 0,
+ offsetof(struct scu_task_context, sgl_pair_ab));
+ }
+
+ return status;
+}
+
+enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev,
+ u16 io_tag, struct scic_sds_request *sci_req)
+{
+ struct domain_device *dev = sci_dev_to_domain(sci_dev);
+ enum sci_status status = SCI_SUCCESS;
+
+ /* Build the common part of the request */
+ scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
+
+ if (dev->dev_type == SAS_END_DEV) {
+ scic_sds_ssp_task_request_assign_buffers(sci_req);
+
+ sci_req->has_started_substate_machine = true;
+
+ /* Construct the started sub-state machine. */
+ sci_base_state_machine_construct(
+ &sci_req->started_substate_machine,
+ sci_req,
+ scic_sds_io_request_started_task_mgmt_substate_table,
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
+ );
+ } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
+ scic_sds_stp_request_assign_buffers(sci_req);
+ else
+ status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+ if (status == SCI_SUCCESS) {
+ sci_req->is_task_management_request = true;
+ memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context));
+ }
+
+ return status;
+}
+
+static enum sci_status isci_request_ssp_request_construct(
+ struct isci_request *request)
+{
+ enum sci_status status;
+
+ dev_dbg(&request->isci_host->pdev->dev,
+ "%s: request = %p\n",
+ __func__,
+ request);
+ status = scic_io_request_construct_basic_ssp(&request->sci);
+ return status;
+}
+
+static enum sci_status isci_request_stp_request_construct(
+ struct isci_request *request)
+{
+ struct sas_task *task = isci_request_access_task(request);
+ enum sci_status status;
+ struct host_to_dev_fis *register_fis;
+
+ dev_dbg(&request->isci_host->pdev->dev,
+ "%s: request = %p\n",
+ __func__,
+ request);
+
+ /* Get the host_to_dev_fis from the core and copy
+ * the fis from the task into it.
+ */
+ register_fis = isci_sata_task_to_fis_copy(task);
+
+ status = scic_io_request_construct_basic_sata(&request->sci);
+
+ /* Set the ncq tag in the fis, from the queue
+ * command in the task.
+ */
+ if (isci_sata_is_task_ncq(task)) {
+
+ isci_sata_set_ncq_tag(
+ register_fis,
+ task
+ );
+ }
+
+ return status;
+}
+
+/*
+ * isci_smp_request_build() - This function builds the smp request.
+ * @ireq: This parameter points to the isci_request allocated in the
+ * request construct function.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static enum sci_status isci_smp_request_build(struct isci_request *ireq)
+{
+ enum sci_status status = SCI_FAILURE;
+ struct sas_task *task = isci_request_access_task(ireq);
+ struct scic_sds_request *sci_req = &ireq->sci;
+
+ dev_dbg(&ireq->isci_host->pdev->dev,
+ "%s: request = %p\n", __func__, ireq);
+
+ dev_dbg(&ireq->isci_host->pdev->dev,
+ "%s: smp_req len = %d\n",
+ __func__,
+ task->smp_task.smp_req.length);
+
+ /* copy the smp_command to the address; */
+ sg_copy_to_buffer(&task->smp_task.smp_req, 1,
+ &sci_req->smp.cmd,
+ sizeof(struct smp_req));
+
+ status = scic_io_request_construct_smp(sci_req);
+ if (status != SCI_SUCCESS)
+ dev_warn(&ireq->isci_host->pdev->dev,
+ "%s: failed with status = %d\n",
+ __func__,
+ status);
+
+ return status;
+}
+
+/**
+ * isci_io_request_build() - This function builds the io request object.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @request: This parameter points to the isci_request object allocated in the
+ * request construct function.
+ * @sci_device: This parameter is the handle for the sci core's remote device
+ * object that is the destination for this request.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static enum sci_status isci_io_request_build(
+ struct isci_host *isci_host,
+ struct isci_request *request,
+ struct isci_remote_device *isci_device)
+{
+ enum sci_status status = SCI_SUCCESS;
+ struct sas_task *task = isci_request_access_task(request);
+ struct scic_sds_remote_device *sci_device = &isci_device->sci;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = 0x%p; request = %p, "
+ "num_scatter = %d\n",
+ __func__,
+ isci_device,
+ request,
+ task->num_scatter);
+
+ /* map the sgl addresses, if present.
+ * libata does the mapping for sata devices
+ * before we get the request.
+ */
+ if (task->num_scatter &&
+ !sas_protocol_ata(task->task_proto) &&
+ !(SAS_PROTOCOL_SMP & task->task_proto)) {
+
+ request->num_sg_entries = dma_map_sg(
+ &isci_host->pdev->dev,
+ task->scatter,
+ task->num_scatter,
+ task->data_dir
+ );
+
+ if (request->num_sg_entries == 0)
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+ }
+
+ /* build the common request object. For now,
+ * we will let the core allocate the IO tag.
+ */
+ status = scic_io_request_construct(&isci_host->sci, sci_device,
+ SCI_CONTROLLER_INVALID_IO_TAG,
+ &request->sci);
+
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: failed request construct\n",
+ __func__);
+ return SCI_FAILURE;
+ }
+
+ switch (task->task_proto) {
+ case SAS_PROTOCOL_SMP:
+ status = isci_smp_request_build(request);
+ break;
+ case SAS_PROTOCOL_SSP:
+ status = isci_request_ssp_request_construct(request);
+ break;
+ case SAS_PROTOCOL_SATA:
+ case SAS_PROTOCOL_STP:
+ case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
+ status = isci_request_stp_request_construct(request);
+ break;
+ default:
+ dev_warn(&isci_host->pdev->dev,
+ "%s: unknown protocol\n", __func__);
+ return SCI_FAILURE;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * isci_request_alloc_core() - This function gets the request object from the
+ * isci_host dma cache.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @isci_request: This parameter will contain the pointer to the new
+ * isci_request object.
+ * @isci_device: This parameter is the pointer to the isci remote device object
+ * that is the destination for this request.
+ * @gfp_flags: This parameter specifies the os allocation flags.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static int isci_request_alloc_core(
+ struct isci_host *isci_host,
+ struct isci_request **isci_request,
+ struct isci_remote_device *isci_device,
+ gfp_t gfp_flags)
+{
+ int ret = 0;
+ dma_addr_t handle;
+ struct isci_request *request;
+
- complete_to_host = isci_perform_error_io_completion;
- request->complete_in_target = false;
- break;
+ /* get pointer to dma memory. This actually points
+ * to both the isci_remote_device object and the
+ * sci object. The isci object is at the beginning
+ * of the memory allocated here.
+ */
+ request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle);
+ if (!request) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: dma_pool_alloc returned NULL\n", __func__);
+ return -ENOMEM;
+ }
- default:
- /* Catch any otherwise unhandled error codes here. */
- dev_warn(&isci_host->pdev->dev,
- "%s: invalid completion code: 0x%x - "
- "isci_request = %p\n",
- __func__, completion_status, request);
+ /* initialize the request object. */
+ spin_lock_init(&request->state_lock);
+ request->request_daddr = handle;
+ request->isci_host = isci_host;
+ request->isci_device = isci_device;
+ request->io_request_completion = NULL;
+ request->terminated = false;
- response = SAS_TASK_UNDELIVERED;
+ request->num_sg_entries = 0;
- /* See if the device has been/is being stopped. Note
- * that we ignore the quiesce state, since we are
- * concerned about the actual device state.
- */
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
- status = SAS_DEVICE_UNKNOWN;
- else
- status = SAS_ABORTED_TASK;
+ request->complete_in_target = false;
- complete_to_host = isci_perform_error_io_completion;
- request->complete_in_target = false;
- break;
- }
- break;
+ INIT_LIST_HEAD(&request->completed_node);
+ INIT_LIST_HEAD(&request->dev_node);
+
+ *isci_request = request;
+ isci_request_change_state(request, allocated);
+
+ return ret;
+}
+
+static int isci_request_alloc_io(
+ struct isci_host *isci_host,
+ struct sas_task *task,
+ struct isci_request **isci_request,
+ struct isci_remote_device *isci_device,
+ gfp_t gfp_flags)
+{
+ int retval = isci_request_alloc_core(isci_host, isci_request,
+ isci_device, gfp_flags);
+
+ if (!retval) {
+ (*isci_request)->ttype_ptr.io_task_ptr = task;
+ (*isci_request)->ttype = io_task;
+
+ task->lldd_task = *isci_request;
}
+ return retval;
+}
- isci_request_unmap_sgl(request, isci_host->pdev);
+/**
+ * isci_request_alloc_tmf() - This function gets the request object from the
+ * isci_host dma cache and initializes the relevant fields as a sas_task.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @sas_task: This parameter is the task struct from the upper layer driver.
+ * @isci_request: This parameter will contain the pointer to the new
+ * isci_request object.
+ * @isci_device: This parameter is the pointer to the isci remote device object
+ * that is the destination for this request.
+ * @gfp_flags: This parameter specifies the os allocation flags.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+int isci_request_alloc_tmf(
+ struct isci_host *isci_host,
+ struct isci_tmf *isci_tmf,
+ struct isci_request **isci_request,
+ struct isci_remote_device *isci_device,
+ gfp_t gfp_flags)
+{
+ int retval = isci_request_alloc_core(isci_host, isci_request,
+ isci_device, gfp_flags);
- /* Put the completed request on the correct list */
- isci_task_save_for_upper_layer_completion(isci_host, request, response,
- status, complete_to_host
- );
+ if (!retval) {
- /* complete the io request to the core. */
- scic_controller_complete_io(&isci_host->sci,
- &isci_device->sci,
- &request->sci);
- /* set terminated handle so it cannot be completed or
- * terminated again, and to cause any calls into abort
- * task to recognize the already completed case.
+ (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf;
+ (*isci_request)->ttype = tmf_task;
+ }
+ return retval;
+}
+
+/**
+ * isci_request_execute() - This function allocates the isci_request object,
+ * all fills in some common fields.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @sas_task: This parameter is the task struct from the upper layer driver.
+ * @isci_request: This parameter will contain the pointer to the new
+ * isci_request object.
+ * @gfp_flags: This parameter specifies the os allocation flags.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+int isci_request_execute(
+ struct isci_host *isci_host,
+ struct sas_task *task,
+ struct isci_request **isci_request,
+ gfp_t gfp_flags)
+{
+ int ret = 0;
+ struct scic_sds_remote_device *sci_device;
+ enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+ struct isci_remote_device *isci_device;
+ struct isci_request *request;
+ unsigned long flags;
+
+ isci_device = task->dev->lldd_dev;
+ sci_device = &isci_device->sci;
+
+ /* do common allocation and init of request object. */
+ ret = isci_request_alloc_io(
+ isci_host,
+ task,
+ &request,
+ isci_device,
+ gfp_flags
+ );
+
+ if (ret)
+ goto out;
+
+ status = isci_io_request_build(isci_host, request, isci_device);
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: request_construct failed - status = 0x%x\n",
+ __func__,
+ status);
+ goto out;
+ }
+
+ spin_lock_irqsave(&isci_host->scic_lock, flags);
+
+ /* send the request, let the core assign the IO TAG. */
+ status = scic_controller_start_io(&isci_host->sci, sci_device,
+ &request->sci,
+ SCI_CONTROLLER_INVALID_IO_TAG);
+ if (status != SCI_SUCCESS &&
+ status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: failed request start (0x%x)\n",
+ __func__, status);
+ spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+ goto out;
+ }
+
+ /* Either I/O started OK, or the core has signaled that
+ * the device needs a target reset.
+ *
+ * In either case, hold onto the I/O for later.
+ *
+ * Update it's status and add it to the list in the
+ * remote device object.
*/
- request->terminated = true;
+ isci_request_change_state(request, started);
+ list_add(&request->dev_node, &isci_device->reqs_in_process);
- isci_host_can_dequeue(isci_host, 1);
+ if (status == SCI_SUCCESS) {
+ /* Save the tag for possible task mgmt later. */
+ request->io_tag = request->sci.io_tag;
+ } else {
+ /* The request did not really start in the
+ * hardware, so clear the request handle
+ * here so no terminations will be done.
+ */
+ request->terminated = true;
+ }
+ spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+ if (status ==
+ SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+ /* Signal libsas that we need the SCSI error
+ * handler thread to work on this I/O and that
+ * we want a device reset.
+ */
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+ /* Cause this task to be scheduled in the SCSI error
+ * handler thread.
+ */
+ isci_execpath_callback(isci_host, task,
+ sas_task_abort);
+
+ /* Change the status, since we are holding
+ * the I/O until it is managed by the SCSI
+ * error handler.
+ */
+ status = SCI_SUCCESS;
+ }
+
+ out:
+ if (status != SCI_SUCCESS) {
+ /* release dma memory on failure. */
+ isci_request_free(isci_host, request);
+ request = NULL;
+ ret = SCI_FAILURE;
+ }
+
+ *isci_request = request;
+ return ret;
}
+
+
+
#include "isci.h"
#include "host.h"
-#include "scic_sds_request.h"
+#include "scu_task_context.h"
+#include "stp_request.h"
/**
* struct isci_request_status - This enum defines the possible states of an I/O
tmf_task = 1
};
+enum sci_request_protocol {
+ SCIC_NO_PROTOCOL,
+ SCIC_SMP_PROTOCOL,
+ SCIC_SSP_PROTOCOL,
+ SCIC_STP_PROTOCOL
+}; /* XXX remove me, use sas_task.dev instead */;
+
+struct scic_sds_request {
+ /**
+ * This field contains the information for the base request state machine.
+ */
+ struct sci_base_state_machine state_machine;
+
+ /**
+ * This field simply points to the controller to which this IO request
+ * is associated.
+ */
+ struct scic_sds_controller *owning_controller;
+
+ /**
+ * This field simply points to the remote device to which this IO request
+ * is associated.
+ */
+ struct scic_sds_remote_device *target_device;
+
+ /**
+ * This field is utilized to determine if the SCI user is managing
+ * the IO tag for this request or if the core is managing it.
+ */
+ bool was_tag_assigned_by_user;
+
+ /**
+ * This field indicates the IO tag for this request. The IO tag is
+ * comprised of the task_index and a sequence count. The sequence count
+ * is utilized to help identify tasks from one life to another.
+ */
+ u16 io_tag;
+
+ /**
+ * This field specifies the protocol being utilized for this
+ * IO request.
+ */
+ enum sci_request_protocol protocol;
+
+ /**
+ * This field indicates the completion status taken from the SCUs
+ * completion code. It indicates the completion result for the SCU hardware.
+ */
+ u32 scu_status;
+
+ /**
+ * This field indicates the completion status returned to the SCI user. It
+ * indicates the users view of the io request completion.
+ */
+ u32 sci_status;
+
+ /**
+ * This field contains the value to be utilized when posting (e.g. Post_TC,
+ * Post_TC_Abort) this request to the silicon.
+ */
+ u32 post_context;
+
+ struct scu_task_context *task_context_buffer;
+ struct scu_task_context tc ____cacheline_aligned;
+
+ /* could be larger with sg chaining */
+ #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
+ struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
+
+ /**
+ * This field indicates if this request is a task management request or
+ * normal IO request.
+ */
+ bool is_task_management_request;
+
+ /**
+ * This field indicates that this request contains an initialized started
+ * substate machine.
+ */
+ bool has_started_substate_machine;
+
+ /**
+ * This field is a pointer to the stored rx frame data. It is used in STP
+ * internal requests and SMP response frames. If this field is non-NULL the
+ * saved frame must be released on IO request completion.
+ *
+ * @todo In the future do we want to keep a list of RX frame buffers?
+ */
+ u32 saved_rx_frame_index;
+
+ /**
+ * This field specifies the data necessary to manage the sub-state
+ * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
+ */
+ struct sci_base_state_machine started_substate_machine;
+
+ /**
+ * This field specifies the current state handlers in place for this
+ * IO Request object. This field is updated each time the request
+ * changes state.
+ */
+ const struct scic_sds_io_request_state_handler *state_handlers;
+
+ /**
+ * This field in the recorded device sequence for the io request. This is
+ * recorded during the build operation and is compared in the start
+ * operation. If the sequence is different then there was a change of
+ * devices from the build to start operations.
+ */
+ u8 device_sequence;
+
+ union {
+ struct {
+ union {
+ struct ssp_cmd_iu cmd;
+ struct ssp_task_iu tmf;
+ };
+ union {
+ struct ssp_response_iu rsp;
+ u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
+ };
+ } ssp;
+
+ struct {
+ struct smp_req cmd;
+ struct smp_resp rsp;
+ } smp;
+
+ struct {
+ struct scic_sds_stp_request req;
+ struct host_to_dev_fis cmd;
+ struct dev_to_host_fis rsp;
+ } stp;
+ };
+
+};
+
+static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
+{
+ struct scic_sds_request *sci_req;
+
+ sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
+ return sci_req;
+}
+
struct isci_request {
enum isci_request_status status;
enum task_type ttype;
return ireq;
}
+/**
+ * enum sci_base_request_states - This enumeration depicts all the states for
+ * the common request state machine.
+ *
+ *
+ */
+enum sci_base_request_states {
+ /**
+ * Simply the initial state for the base request state machine.
+ */
+ SCI_BASE_REQUEST_STATE_INITIAL,
+
+ /**
+ * This state indicates that the request has been constructed. This state
+ * is entered from the INITIAL state.
+ */
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED,
+
+ /**
+ * This state indicates that the request has been started. This state is
+ * entered from the CONSTRUCTED state.
+ */
+ SCI_BASE_REQUEST_STATE_STARTED,
+
+ /**
+ * This state indicates that the request has completed.
+ * This state is entered from the STARTED state. This state is entered from
+ * the ABORTING state.
+ */
+ SCI_BASE_REQUEST_STATE_COMPLETED,
+
+ /**
+ * This state indicates that the request is in the process of being
+ * terminated/aborted.
+ * This state is entered from the CONSTRUCTED state.
+ * This state is entered from the STARTED state.
+ */
+ SCI_BASE_REQUEST_STATE_ABORTING,
+
+ /**
+ * Simply the final state for the base request state machine.
+ */
+ SCI_BASE_REQUEST_STATE_FINAL,
+};
+
+typedef enum sci_status (*scic_sds_io_request_handler_t)
+ (struct scic_sds_request *request);
+typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
+ (struct scic_sds_request *req, u32 frame);
+typedef enum sci_status (*scic_sds_io_request_event_handler_t)
+ (struct scic_sds_request *req, u32 event);
+typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
+ (struct scic_sds_request *req, u32 completion_code);
+
+/**
+ * struct scic_sds_io_request_state_handler - This is the SDS core definition
+ * of the state handlers.
+ *
+ *
+ */
+struct scic_sds_io_request_state_handler {
+ /**
+ * The start_handler specifies the method invoked when a user attempts to
+ * start a request.
+ */
+ scic_sds_io_request_handler_t start_handler;
+
+ /**
+ * The abort_handler specifies the method invoked when a user attempts to
+ * abort a request.
+ */
+ scic_sds_io_request_handler_t abort_handler;
+
+ /**
+ * The complete_handler specifies the method invoked when a user attempts to
+ * complete a request.
+ */
+ scic_sds_io_request_handler_t complete_handler;
+
+ scic_sds_io_request_task_completion_handler_t tc_completion_handler;
+ scic_sds_io_request_event_handler_t event_handler;
+ scic_sds_io_request_frame_handler_t frame_handler;
+
+};
+
+extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
+
+/**
+ * scic_sds_request_get_controller() -
+ *
+ * This macro will return the controller for this io request object
+ */
+#define scic_sds_request_get_controller(sci_req) \
+ ((sci_req)->owning_controller)
+
+/**
+ * scic_sds_request_get_device() -
+ *
+ * This macro will return the device for this io request object
+ */
+#define scic_sds_request_get_device(sci_req) \
+ ((sci_req)->target_device)
+
+/**
+ * scic_sds_request_get_port() -
+ *
+ * This macro will return the port for this io request object
+ */
+#define scic_sds_request_get_port(sci_req) \
+ scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
+
+/**
+ * scic_sds_request_get_post_context() -
+ *
+ * This macro returns the constructed post context result for the io request.
+ */
+#define scic_sds_request_get_post_context(sci_req) \
+ ((sci_req)->post_context)
+
+/**
+ * scic_sds_request_get_task_context() -
+ *
+ * This is a helper macro to return the os handle for this request object.
+ */
+#define scic_sds_request_get_task_context(request) \
+ ((request)->task_context_buffer)
+
+/**
+ * scic_sds_request_set_status() -
+ *
+ * This macro will set the scu hardware status and sci request completion
+ * status for an io request.
+ */
+#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
+ { \
+ (request)->scu_status = (scu_status_code); \
+ (request)->sci_status = (sci_status_code); \
+ }
+
+#define scic_sds_request_complete(a_request) \
+ ((a_request)->state_handlers->complete_handler(a_request))
+
+
+extern enum sci_status
+scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
+
+/**
+ * SCU_SGL_ZERO() -
+ *
+ * This macro zeros the hardware SGL element data
+ */
+#define SCU_SGL_ZERO(scu_sge) \
+ { \
+ (scu_sge).length = 0; \
+ (scu_sge).address_lower = 0; \
+ (scu_sge).address_upper = 0; \
+ (scu_sge).address_modifier = 0; \
+ }
+
+/**
+ * SCU_SGL_COPY() -
+ *
+ * This macro copys the SGL Element data from the host os to the hardware SGL
+ * elment data
+ */
+#define SCU_SGL_COPY(scu_sge, os_sge) \
+ { \
+ (scu_sge).length = sg_dma_len(sg); \
+ (scu_sge).address_upper = \
+ upper_32_bits(sg_dma_address(sg)); \
+ (scu_sge).address_lower = \
+ lower_32_bits(sg_dma_address(sg)); \
+ (scu_sge).address_modifier = 0; \
+ }
+
+void scic_sds_request_build_sgl(struct scic_sds_request *sci_req);
+void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req);
+void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_io_request_terminate(struct scic_sds_request *sci_req);
+void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req,
+ u32 event_code);
+enum sci_status scic_sds_io_request_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index);
+enum sci_status scic_sds_task_request_terminate(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req);
+
+/**
+ * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
+ * depicts all of the substates for a task management request to be
+ * performed in the STARTED super-state.
+ *
+ *
+ */
+enum scic_sds_raw_request_started_task_mgmt_substates {
+ /**
+ * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
+ * task management request is waiting for the transmission of the
+ * initial frame (i.e. command, task, etc.).
+ */
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
+
+ /**
+ * This sub-state indicates that the started task management request
+ * is waiting for the reception of an unsolicited frame
+ * (i.e. response IU).
+ */
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
+};
+
+
+/**
+ * enum _scic_sds_smp_request_started_substates - This enumeration depicts all
+ * of the substates for a SMP request to be performed in the STARTED
+ * super-state.
+ *
+ *
+ */
+enum scic_sds_smp_request_started_substates {
+ /**
+ * This sub-state indicates that the started task management request
+ * is waiting for the reception of an unsolicited frame
+ * (i.e. response IU).
+ */
+ SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
+
+ /**
+ * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
+ * waiting for the transmission of the initial frame (i.e. command, task, etc.).
+ */
+ SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
+};
+
+
+
+/* XXX open code in caller */
+static inline void *scic_request_get_virt_addr(struct scic_sds_request *sci_req,
+ dma_addr_t phys_addr)
+{
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ dma_addr_t offset;
+
+ BUG_ON(phys_addr < ireq->request_daddr);
+
+ offset = phys_addr - ireq->request_daddr;
+
+ BUG_ON(offset >= sizeof(*ireq));
+
+ return (char *)ireq + offset;
+}
+
+/* XXX open code in caller */
+static inline dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sci_req,
+ void *virt_addr)
+{
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+
+ char *requested_addr = (char *)virt_addr;
+ char *base_addr = (char *)ireq;
+
+ BUG_ON(requested_addr < base_addr);
+ BUG_ON((requested_addr - base_addr) >= sizeof(*ireq));
+
+ return ireq->request_daddr + (requested_addr - base_addr);
+}
+
/**
* This function gets the status of the request object.
* @request: This parameter points to the isci_request object
}
}
-
-void isci_request_io_request_complete(
- struct isci_host *isci_host,
- struct isci_request *request,
- enum sci_io_status completion_status);
-
/**
* isci_request_io_request_get_next_sge() - This function is called by the sci
* core to retrieve the next sge for a given request.
return ret;
}
-
-void isci_terminate_pending_requests(
- struct isci_host *isci_host,
- struct isci_remote_device *isci_device,
- enum isci_request_status new_request_state);
-
-
-
-
+void isci_terminate_pending_requests(struct isci_host *isci_host,
+ struct isci_remote_device *isci_device,
+ enum isci_request_status new_request_state);
+enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev,
+ u16 io_tag,
+ struct scic_sds_request *sci_req);
+enum sci_status scic_task_request_construct_ssp(struct scic_sds_request *sci_req);
+enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req);
+enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req);
+void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag);
+void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
#endif /* !defined(_ISCI_REQUEST_H_) */
#include <scsi/sas.h>
#include "isci.h"
#include "remote_device.h"
-#include "scic_io_request.h"
-#include "scic_task_request.h"
#include "task.h"
#include "request.h"
#include "sata.h"
--- /dev/null
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <scsi/sas.h>
+#include "state_machine.h"
+#include "remote_device.h"
+#include "request.h"
+#include "scu_completion_codes.h"
+#include "scu_task_context.h"
+#include "host.h"
+
+static void scu_smp_request_construct_task_context(
+ struct scic_sds_request *sci_req,
+ struct smp_req *smp_req);
+
+void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req)
+{
+ if (sci_req->was_tag_assigned_by_user == false)
+ sci_req->task_context_buffer = &sci_req->tc;
+}
+
+/*
+ * This function will fill in the SCU Task Context for a SMP request. The
+ * following important settings are utilized: -# task_type ==
+ * SCU_TASK_TYPE_SMP. This simply indicates that a normal request type
+ * (i.e. non-raw frame) is being utilized to perform task management. -#
+ * control_frame == 1. This ensures that the proper endianess is set so
+ * that the bytes are transmitted in the right order for a smp request frame.
+ * @sci_req: This parameter specifies the smp request object being
+ * constructed.
+ *
+ */
+static void
+scu_smp_request_construct_task_context(struct scic_sds_request *sci_req,
+ struct smp_req *smp_req)
+{
+ dma_addr_t dma_addr;
+ struct scic_sds_controller *scic;
+ struct scic_sds_remote_device *sci_dev;
+ struct scic_sds_port *sci_port;
+ struct scu_task_context *task_context;
+ ssize_t word_cnt = sizeof(struct smp_req) / sizeof(u32);
+
+ /* byte swap the smp request. */
+ sci_swab32_cpy(&sci_req->smp.cmd, smp_req,
+ word_cnt);
+
+ task_context = scic_sds_request_get_task_context(sci_req);
+
+ scic = scic_sds_request_get_controller(sci_req);
+ sci_dev = scic_sds_request_get_device(sci_req);
+ sci_port = scic_sds_request_get_port(sci_req);
+
+ /*
+ * Fill in the TC with the its required data
+ * 00h
+ */
+ task_context->priority = 0;
+ task_context->initiator_request = 1;
+ task_context->connection_rate = sci_dev->connection_rate;
+ task_context->protocol_engine_index =
+ scic_sds_controller_get_protocol_engine_group(scic);
+ task_context->logical_port_index = scic_sds_port_get_index(sci_port);
+ task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SMP;
+ task_context->abort = 0;
+ task_context->valid = SCU_TASK_CONTEXT_VALID;
+ task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+ /* 04h */
+ task_context->remote_node_index = sci_dev->rnc.remote_node_index;
+ task_context->command_code = 0;
+ task_context->task_type = SCU_TASK_TYPE_SMP_REQUEST;
+
+ /* 08h */
+ task_context->link_layer_control = 0;
+ task_context->do_not_dma_ssp_good_response = 1;
+ task_context->strict_ordering = 0;
+ task_context->control_frame = 1;
+ task_context->timeout_enable = 0;
+ task_context->block_guard_enable = 0;
+
+ /* 0ch */
+ task_context->address_modifier = 0;
+
+ /* 10h */
+ task_context->ssp_command_iu_length = smp_req->req_len;
+
+ /* 14h */
+ task_context->transfer_length_bytes = 0;
+
+ /*
+ * 18h ~ 30h, protocol specific
+ * since commandIU has been build by framework at this point, we just
+ * copy the frist DWord from command IU to this location. */
+ memcpy(&task_context->type.smp, &sci_req->smp.cmd, sizeof(u32));
+
+ /*
+ * 40h
+ * "For SMP you could program it to zero. We would prefer that way
+ * so that done code will be consistent." - Venki
+ */
+ task_context->task_phase = 0;
+
+ if (sci_req->was_tag_assigned_by_user) {
+ /*
+ * Build the task context now since we have already read
+ * the data
+ */
+ sci_req->post_context =
+ (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(scic) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(sci_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+ scic_sds_io_tag_get_index(sci_req->io_tag));
+ } else {
+ /*
+ * Build the task context now since we have already read
+ * the data.
+ * I/O tag index is not assigned because we have to wait
+ * until we get a TCi.
+ */
+ sci_req->post_context =
+ (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(scic) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(sci_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
+ }
+
+ /*
+ * Copy the physical address for the command buffer to the SCU Task
+ * Context command buffer should not contain command header.
+ */
+ dma_addr = scic_io_request_get_dma_addr(sci_req,
+ ((char *) &sci_req->smp.cmd) +
+ sizeof(u32));
+
+ task_context->command_iu_upper = upper_32_bits(dma_addr);
+ task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+ /* SMP response comes as UF, so no need to set response IU address. */
+ task_context->response_iu_upper = 0;
+ task_context->response_iu_lower = 0;
+}
+
+/*
+ * This function processes an unsolicited frame while the SMP request is waiting
+ * for a response frame. It will copy the response data, release the
+ * unsolicited frame, and transition the request to the
+ * SCI_BASE_REQUEST_STATE_COMPLETED state.
+ * @sci_req: This parameter specifies the request for which the
+ * unsolicited frame was received.
+ * @frame_index: This parameter indicates the unsolicited frame index that
+ * should contain the response.
+ *
+ * This function returns an indication of whether the response frame was handled
+ * successfully or not. SCI_SUCCESS Currently this value is always returned and
+ * indicates successful processing of the TC response.
+ */
+static enum sci_status
+scic_sds_smp_request_await_response_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ void *frame_header;
+ struct smp_resp *rsp_hdr = &sci_req->smp.rsp;
+ ssize_t word_cnt = SMP_RESP_HDR_SZ / sizeof(u32);
+
+ status = scic_sds_unsolicited_frame_control_get_header(
+ &(scic_sds_request_get_controller(sci_req)->uf_control),
+ frame_index,
+ &frame_header);
+
+ /* byte swap the header. */
+ sci_swab32_cpy(rsp_hdr, frame_header, word_cnt);
+
+ if (rsp_hdr->frame_type == SMP_RESPONSE) {
+ void *smp_resp;
+
+ status = scic_sds_unsolicited_frame_control_get_buffer(
+ &(scic_sds_request_get_controller(sci_req)->uf_control),
+ frame_index,
+ &smp_resp);
+
+ word_cnt = (sizeof(struct smp_req) - SMP_RESP_HDR_SZ) /
+ sizeof(u32);
+
+ sci_swab32_cpy(((u8 *) rsp_hdr) + SMP_RESP_HDR_SZ,
+ smp_resp, word_cnt);
+
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION);
+ } else {
+ /* This was not a response frame why did it get forwarded? */
+ dev_err(scic_to_dev(sci_req->owning_controller),
+ "%s: SCIC SMP Request 0x%p received unexpected frame "
+ "%d type 0x%02x\n",
+ __func__,
+ sci_req,
+ frame_index,
+ rsp_hdr->frame_type);
+
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_TASK_DONE_SMP_FRM_TYPE_ERR,
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ }
+
+ scic_sds_controller_release_frame(sci_req->owning_controller,
+ frame_index);
+
+ return SCI_SUCCESS;
+}
+
+
+/**
+ * This method processes an abnormal TC completion while the SMP request is
+ * waiting for a response frame. It decides what happened to the IO based
+ * on TC completion status.
+ * @sci_req: This parameter specifies the request for which the TC
+ * completion was received.
+ * @completion_code: This parameter indicates the completion status information
+ * for the TC.
+ *
+ * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
+ * this method always returns success.
+ */
+static enum sci_status scic_sds_smp_request_await_response_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ /*
+ * In the AWAIT RESPONSE state, any TC completion is unexpected.
+ * but if the TC has success status, we complete the IO anyway. */
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
+ /*
+ * These status has been seen in a specific LSI expander, which sometimes
+ * is not able to send smp response within 2 ms. This causes our hardware
+ * break the connection and set TC completion with one of these SMP_XXX_XX_ERR
+ * status. For these type of error, we ask scic user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_SMP_RESP_TO_ERR, SCI_FAILURE_RETRY_REQUIRED
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+
+/**
+ * This method processes the completions transport layer (TL) status to
+ * determine if the SMP request was sent successfully. If the SMP request
+ * was sent successfully, then the state for the SMP request transits to
+ * waiting for a response frame.
+ * @sci_req: This parameter specifies the request for which the TC
+ * completion was received.
+ * @completion_code: This parameter indicates the completion status information
+ * for the TC.
+ *
+ * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
+ * this method always returns success.
+ */
+static enum sci_status scic_sds_smp_request_await_tc_completion_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+
+static const struct scic_sds_io_request_state_handler scic_sds_smp_request_started_substate_handler_table[] = {
+ [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_smp_request_await_response_tc_completion_handler,
+ .frame_handler = scic_sds_smp_request_await_response_frame_handler,
+ },
+ [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_smp_request_await_tc_completion_tc_completion_handler,
+ }
+};
+
+/**
+ * This method performs the actions required when entering the
+ * SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state. This
+ * includes setting the IO request state handlers for this sub-state.
+ * @object: This parameter specifies the request object for which the sub-state
+ * change is occurring.
+ *
+ * none.
+ */
+static void scic_sds_smp_request_started_await_response_substate_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_smp_request_started_substate_handler_table,
+ SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
+ );
+}
+
+/**
+ * This method performs the actions required when entering the
+ * SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION sub-state.
+ * This includes setting the SMP request state handlers for this sub-state.
+ * @object: This parameter specifies the request object for which the sub-state
+ * change is occurring.
+ *
+ * none.
+ */
+static void scic_sds_smp_request_started_await_tc_completion_substate_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_smp_request_started_substate_handler_table,
+ SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
+ );
+}
+
+static const struct sci_base_state scic_sds_smp_request_started_substate_table[] = {
+ [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = {
+ .enter_state = scic_sds_smp_request_started_await_response_substate_enter,
+ },
+ [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = {
+ .enter_state = scic_sds_smp_request_started_await_tc_completion_substate_enter,
+ },
+};
+
+/**
+ * This method is called by the SCI user to build an SMP IO request.
+ *
+ * - The user must have previously called scic_io_request_construct() on the
+ * supplied IO request. Indicate if the controller successfully built the IO
+ * request. SCI_SUCCESS This value is returned if the IO request was
+ * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
+ * if the remote_device does not support the SMP protocol.
+ * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
+ * properly set the association between the SCIC IO request and the user's IO
+ * request.
+ */
+enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req)
+{
+ struct smp_req *smp_req = kmalloc(sizeof(*smp_req), GFP_KERNEL);
+
+ if (!smp_req)
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+
+ sci_req->protocol = SCIC_SMP_PROTOCOL;
+ sci_req->has_started_substate_machine = true;
+
+ /* Construct the started sub-state machine. */
+ sci_base_state_machine_construct(
+ &sci_req->started_substate_machine,
+ sci_req,
+ scic_sds_smp_request_started_substate_table,
+ SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
+ );
+
+ /* Construct the SMP SCU Task Context */
+ memcpy(smp_req, &sci_req->smp.cmd, sizeof(*smp_req));
+
+ /*
+ * Look at the SMP requests' header fields; for certain SAS 1.x SMP
+ * functions under SAS 2.0, a zero request length really indicates
+ * a non-zero default length. */
+ if (smp_req->req_len == 0) {
+ switch (smp_req->func) {
+ case SMP_DISCOVER:
+ case SMP_REPORT_PHY_ERR_LOG:
+ case SMP_REPORT_PHY_SATA:
+ case SMP_REPORT_ROUTE_INFO:
+ smp_req->req_len = 2;
+ break;
+ case SMP_CONF_ROUTE_INFO:
+ case SMP_PHY_CONTROL:
+ case SMP_PHY_TEST_FUNCTION:
+ smp_req->req_len = 9;
+ break;
+ /* Default - zero is a valid default for 2.0. */
+ }
+ }
+
+ scu_smp_request_construct_task_context(sci_req, smp_req);
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
+ kfree(smp_req);
+
+ return SCI_SUCCESS;
+}
--- /dev/null
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "host.h"
+#include "request.h"
+#include "state_machine.h"
+#include "scu_task_context.h"
+#include "scu_completion_codes.h"
+
+/**
+ * This method processes the completions transport layer (TL) status to
+ * determine if the RAW task management frame was sent successfully. If the
+ * raw frame was sent successfully, then the state for the task request
+ * transitions to waiting for a response frame.
+ * @sci_req: This parameter specifies the request for which the TC
+ * completion was received.
+ * @completion_code: This parameter indicates the completion status information
+ * for the TC.
+ *
+ * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
+ * this method always returns success.
+ */
+static enum sci_status scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
+ );
+ break;
+
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
+ /*
+ * Currently, the decision is to simply allow the task request to
+ * timeout if the task IU wasn't received successfully.
+ * There is a potential for receiving multiple task responses if we
+ * decide to send the task IU again. */
+ dev_warn(scic_to_dev(sci_req->owning_controller),
+ "%s: TaskRequest:0x%p CompletionCode:%x - "
+ "ACK/NAK timeout\n",
+ __func__,
+ sci_req,
+ completion_code);
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * This method is responsible for processing a terminate/abort request for this
+ * TC while the request is waiting for the task management response
+ * unsolicited frame.
+ * @sci_req: This parameter specifies the request for which the
+ * termination was requested.
+ *
+ * This method returns an indication as to whether the abort request was
+ * successfully handled. need to update to ensure the received UF doesn't cause
+ * damage to subsequent requests (i.e. put the extended tag in a holding
+ * pattern for this particular device).
+ */
+static enum sci_status scic_sds_ssp_task_request_await_tc_response_abort_handler(
+ struct scic_sds_request *request)
+{
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_ABORTING);
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ return SCI_SUCCESS;
+}
+
+/**
+ * This method processes an unsolicited frame while the task mgmt request is
+ * waiting for a response frame. It will copy the response data, release
+ * the unsolicited frame, and transition the request to the
+ * SCI_BASE_REQUEST_STATE_COMPLETED state.
+ * @sci_req: This parameter specifies the request for which the
+ * unsolicited frame was received.
+ * @frame_index: This parameter indicates the unsolicited frame index that
+ * should contain the response.
+ *
+ * This method returns an indication of whether the TC response frame was
+ * handled successfully or not. SCI_SUCCESS Currently this value is always
+ * returned and indicates successful processing of the TC response. Should
+ * probably update to check frame type and make sure it is a response frame.
+ */
+static enum sci_status scic_sds_ssp_task_request_await_tc_response_frame_handler(
+ struct scic_sds_request *request,
+ u32 frame_index)
+{
+ scic_sds_io_request_copy_response(request);
+
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ scic_sds_controller_release_frame(request->owning_controller,
+ frame_index);
+ return SCI_SUCCESS;
+}
+
+static const struct scic_sds_io_request_state_handler scic_sds_ssp_task_request_started_substate_handler_table[] = {
+ [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler,
+ },
+ [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE] = {
+ .abort_handler = scic_sds_ssp_task_request_await_tc_response_abort_handler,
+ .frame_handler = scic_sds_ssp_task_request_await_tc_response_frame_handler,
+ }
+};
+
+/**
+ * This method performs the actions required when entering the
+ * SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
+ * sub-state. This includes setting the IO request state handlers for this
+ * sub-state.
+ * @object: This parameter specifies the request object for which the sub-state
+ * change is occurring.
+ *
+ * none.
+ */
+static void scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_ssp_task_request_started_substate_handler_table,
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
+ );
+}
+
+/**
+ * This method performs the actions required when entering the
+ * SCIC_SDS_IO_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state. This
+ * includes setting the IO request state handlers for this sub-state.
+ * @object: This parameter specifies the request object for which the sub-state
+ * change is occurring.
+ *
+ * none.
+ */
+static void scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_ssp_task_request_started_substate_handler_table,
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
+ );
+}
+
+const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[] = {
+ [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION] = {
+ .enter_state = scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter,
+ },
+ [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE] = {
+ .enter_state = scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter,
+ },
+};
+
--- /dev/null
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <scsi/sas.h>
+#include "sas.h"
+#include "state_machine.h"
+#include "remote_device.h"
+#include "stp_request.h"
+#include "unsolicited_frame_control.h"
+#include "scu_completion_codes.h"
+#include "scu_event_codes.h"
+#include "scu_task_context.h"
+#include "request.h"
+
+void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req)
+{
+ if (sci_req->was_tag_assigned_by_user == false)
+ sci_req->task_context_buffer = &sci_req->tc;
+}
+
+/**
+ * This method is will fill in the SCU Task Context for any type of SATA
+ * request. This is called from the various SATA constructors.
+ * @sci_req: The general IO request object which is to be used in
+ * constructing the SCU task context.
+ * @task_context: The buffer pointer for the SCU task context which is being
+ * constructed.
+ *
+ * The general io request construction is complete. The buffer assignment for
+ * the command buffer is complete. none Revisit task context construction to
+ * determine what is common for SSP/SMP/STP task context structures.
+ */
+static void scu_sata_reqeust_construct_task_context(
+ struct scic_sds_request *sci_req,
+ struct scu_task_context *task_context)
+{
+ dma_addr_t dma_addr;
+ struct scic_sds_controller *controller;
+ struct scic_sds_remote_device *target_device;
+ struct scic_sds_port *target_port;
+
+ controller = scic_sds_request_get_controller(sci_req);
+ target_device = scic_sds_request_get_device(sci_req);
+ target_port = scic_sds_request_get_port(sci_req);
+
+ /* Fill in the TC with the its required data */
+ task_context->abort = 0;
+ task_context->priority = SCU_TASK_PRIORITY_NORMAL;
+ task_context->initiator_request = 1;
+ task_context->connection_rate = target_device->connection_rate;
+ task_context->protocol_engine_index =
+ scic_sds_controller_get_protocol_engine_group(controller);
+ task_context->logical_port_index =
+ scic_sds_port_get_index(target_port);
+ task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_STP;
+ task_context->valid = SCU_TASK_CONTEXT_VALID;
+ task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+ task_context->remote_node_index =
+ scic_sds_remote_device_get_index(sci_req->target_device);
+ task_context->command_code = 0;
+
+ task_context->link_layer_control = 0;
+ task_context->do_not_dma_ssp_good_response = 1;
+ task_context->strict_ordering = 0;
+ task_context->control_frame = 0;
+ task_context->timeout_enable = 0;
+ task_context->block_guard_enable = 0;
+
+ task_context->address_modifier = 0;
+ task_context->task_phase = 0x01;
+
+ task_context->ssp_command_iu_length =
+ (sizeof(struct host_to_dev_fis) - sizeof(u32)) / sizeof(u32);
+
+ /* Set the first word of the H2D REG FIS */
+ task_context->type.words[0] = *(u32 *)&sci_req->stp.cmd;
+
+ if (sci_req->was_tag_assigned_by_user) {
+ /*
+ * Build the task context now since we have already read
+ * the data
+ */
+ sci_req->post_context =
+ (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(
+ controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+ scic_sds_io_tag_get_index(sci_req->io_tag));
+ } else {
+ /*
+ * Build the task context now since we have already read
+ * the data.
+ * I/O tag index is not assigned because we have to wait
+ * until we get a TCi.
+ */
+ sci_req->post_context =
+ (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(
+ controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
+ }
+
+ /*
+ * Copy the physical address for the command buffer to the SCU Task
+ * Context. We must offset the command buffer by 4 bytes because the
+ * first 4 bytes are transfered in the body of the TC.
+ */
+ dma_addr = scic_io_request_get_dma_addr(sci_req,
+ ((char *) &sci_req->stp.cmd) +
+ sizeof(u32));
+
+ task_context->command_iu_upper = upper_32_bits(dma_addr);
+ task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+ /* SATA Requests do not have a response buffer */
+ task_context->response_iu_upper = 0;
+ task_context->response_iu_lower = 0;
+}
+
+/**
+ *
+ * @sci_req:
+ *
+ * This method will perform any general sata request construction. What part of
+ * SATA IO request construction is general? none
+ */
+static void scic_sds_stp_non_ncq_request_construct(
+ struct scic_sds_request *sci_req)
+{
+ sci_req->has_started_substate_machine = true;
+}
+
+/**
+ *
+ * @sci_req: This parameter specifies the request to be constructed as an
+ * optimized request.
+ * @optimized_task_type: This parameter specifies whether the request is to be
+ * an UDMA request or a NCQ request. - A value of 0 indicates UDMA. - A
+ * value of 1 indicates NCQ.
+ *
+ * This method will perform request construction common to all types of STP
+ * requests that are optimized by the silicon (i.e. UDMA, NCQ). This method
+ * returns an indication as to whether the construction was successful.
+ */
+static void scic_sds_stp_optimized_request_construct(struct scic_sds_request *sci_req,
+ u8 optimized_task_type,
+ u32 len,
+ enum dma_data_direction dir)
+{
+ struct scu_task_context *task_context = sci_req->task_context_buffer;
+
+ /* Build the STP task context structure */
+ scu_sata_reqeust_construct_task_context(sci_req, task_context);
+
+ /* Copy over the SGL elements */
+ scic_sds_request_build_sgl(sci_req);
+
+ /* Copy over the number of bytes to be transfered */
+ task_context->transfer_length_bytes = len;
+
+ if (dir == DMA_TO_DEVICE) {
+ /*
+ * The difference between the DMA IN and DMA OUT request task type
+ * values are consistent with the difference between FPDMA READ
+ * and FPDMA WRITE values. Add the supplied task type parameter
+ * to this difference to set the task type properly for this
+ * DATA OUT (WRITE) case. */
+ task_context->task_type = optimized_task_type + (SCU_TASK_TYPE_DMA_OUT
+ - SCU_TASK_TYPE_DMA_IN);
+ } else {
+ /*
+ * For the DATA IN (READ) case, simply save the supplied
+ * optimized task type. */
+ task_context->task_type = optimized_task_type;
+ }
+}
+
+/**
+ *
+ * @sci_req: This parameter specifies the request to be constructed.
+ *
+ * This method will construct the STP UDMA request and its associated TC data.
+ * This method returns an indication as to whether the construction was
+ * successful. SCI_SUCCESS Currently this method always returns this value.
+ */
+enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
+ u32 len,
+ enum dma_data_direction dir)
+{
+ scic_sds_stp_optimized_request_construct(sci_req,
+ SCU_TASK_TYPE_FPDMAQ_READ,
+ len, dir);
+ return SCI_SUCCESS;
+}
+
+/**
+ * scu_stp_raw_request_construct_task_context -
+ * @sci_req: This parameter specifies the STP request object for which to
+ * construct a RAW command frame task context.
+ * @task_context: This parameter specifies the SCU specific task context buffer
+ * to construct.
+ *
+ * This method performs the operations common to all SATA/STP requests
+ * utilizing the raw frame method. none
+ */
+static void scu_stp_raw_request_construct_task_context(
+ struct scic_sds_stp_request *stp_req,
+ struct scu_task_context *task_context)
+{
+ struct scic_sds_request *sci_req = to_sci_req(stp_req);
+
+ scu_sata_reqeust_construct_task_context(sci_req, task_context);
+
+ task_context->control_frame = 0;
+ task_context->priority = SCU_TASK_PRIORITY_NORMAL;
+ task_context->task_type = SCU_TASK_TYPE_SATA_RAW_FRAME;
+ task_context->type.stp.fis_type = FIS_REGH2D;
+ task_context->transfer_length_bytes = sizeof(struct host_to_dev_fis) - sizeof(u32);
+}
+
+void scic_stp_io_request_set_ncq_tag(
+ struct scic_sds_request *req,
+ u16 ncq_tag)
+{
+ /**
+ * @note This could be made to return an error to the user if the user
+ * attempts to set the NCQ tag in the wrong state.
+ */
+ req->task_context_buffer->type.stp.ncq_tag = ncq_tag;
+}
+
+/**
+ *
+ * @sci_req:
+ *
+ * Get the next SGL element from the request. - Check on which SGL element pair
+ * we are working - if working on SLG pair element A - advance to element B -
+ * else - check to see if there are more SGL element pairs for this IO request
+ * - if there are more SGL element pairs - advance to the next pair and return
+ * element A struct scu_sgl_element*
+ */
+static struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl(struct scic_sds_stp_request *stp_req)
+{
+ struct scu_sgl_element *current_sgl;
+ struct scic_sds_request *sci_req = to_sci_req(stp_req);
+ struct scic_sds_request_pio_sgl *pio_sgl = &stp_req->type.pio.request_current;
+
+ if (pio_sgl->sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
+ if (pio_sgl->sgl_pair->B.address_lower == 0 &&
+ pio_sgl->sgl_pair->B.address_upper == 0) {
+ current_sgl = NULL;
+ } else {
+ pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_B;
+ current_sgl = &pio_sgl->sgl_pair->B;
+ }
+ } else {
+ if (pio_sgl->sgl_pair->next_pair_lower == 0 &&
+ pio_sgl->sgl_pair->next_pair_upper == 0) {
+ current_sgl = NULL;
+ } else {
+ u64 phys_addr;
+
+ phys_addr = pio_sgl->sgl_pair->next_pair_upper;
+ phys_addr <<= 32;
+ phys_addr |= pio_sgl->sgl_pair->next_pair_lower;
+
+ pio_sgl->sgl_pair = scic_request_get_virt_addr(sci_req, phys_addr);
+ pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_A;
+ current_sgl = &pio_sgl->sgl_pair->A;
+ }
+ }
+
+ return current_sgl;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * This method processes a TC completion. The expected TC completion is for
+ * the transmission of the H2D register FIS containing the SATA/STP non-data
+ * request. This method always successfully processes the TC completion.
+ * SCI_SUCCESS This value is always returned.
+ */
+static enum sci_status scic_sds_stp_request_non_data_await_h2d_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @request: This parameter specifies the request for which a frame has been
+ * received.
+ * @frame_index: This parameter specifies the index of the frame that has been
+ * received.
+ *
+ * This method processes frames received from the target while waiting for a
+ * device to host register FIS. If a non-register FIS is received during this
+ * time, it is treated as a protocol violation from an IO perspective. Indicate
+ * if the received frame was processed successfully.
+ */
+static enum sci_status scic_sds_stp_request_non_data_await_d2h_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(sci_req->owning_controller),
+ "%s: SCIC IO Request 0x%p could not get frame header "
+ "for frame index %d, status %x\n",
+ __func__, stp_req, frame_index, status);
+
+ return status;
+ }
+
+ switch (frame_header->fis_type) {
+ case FIS_REGD2H:
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+
+ /* The command has completed with error */
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ break;
+
+ default:
+ dev_warn(scic_to_dev(scic),
+ "%s: IO Request:0x%p Frame Id:%d protocol "
+ "violation occurred\n", __func__, stp_req,
+ frame_index);
+
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_UNEXP_FIS,
+ SCI_FAILURE_PROTOCOL_VIOLATION);
+ break;
+ }
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Frame has been decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_non_data_substate_handler_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_non_data_await_h2d_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_non_data_await_d2h_frame_handler,
+ }
+};
+
+static void scic_sds_stp_request_started_non_data_await_h2d_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_non_data_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE
+ );
+
+ scic_sds_remote_device_set_working_request(
+ sci_req->target_device, sci_req
+ );
+}
+
+static void scic_sds_stp_request_started_non_data_await_d2h_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_non_data_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
+ );
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state scic_sds_stp_request_started_non_data_substate_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_non_data_await_h2d_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_non_data_await_d2h_enter,
+ },
+};
+
+enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req)
+{
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+
+ scic_sds_stp_non_ncq_request_construct(sci_req);
+
+ /* Build the STP task context structure */
+ scu_stp_raw_request_construct_task_context(stp_req, sci_req->task_context_buffer);
+
+ sci_base_state_machine_construct(&sci_req->started_substate_machine,
+ sci_req,
+ scic_sds_stp_request_started_non_data_substate_table,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE);
+
+ return SCI_SUCCESS;
+}
+
+#define SCU_MAX_FRAME_BUFFER_SIZE 0x400 /* 1K is the maximum SCU frame data payload */
+
+/* transmit DATA_FIS from (current sgl + offset) for input
+ * parameter length. current sgl and offset is alreay stored in the IO request
+ */
+static enum sci_status scic_sds_stp_request_pio_data_out_trasmit_data_frame(
+ struct scic_sds_request *sci_req,
+ u32 length)
+{
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scu_task_context *task_context;
+ struct scu_sgl_element *current_sgl;
+
+ /* Recycle the TC and reconstruct it for sending out DATA FIS containing
+ * for the data from current_sgl+offset for the input length
+ */
+ task_context = scic_sds_controller_get_task_context_buffer(scic,
+ sci_req->io_tag);
+
+ if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A)
+ current_sgl = &stp_req->type.pio.request_current.sgl_pair->A;
+ else
+ current_sgl = &stp_req->type.pio.request_current.sgl_pair->B;
+
+ /* update the TC */
+ task_context->command_iu_upper = current_sgl->address_upper;
+ task_context->command_iu_lower = current_sgl->address_lower;
+ task_context->transfer_length_bytes = length;
+ task_context->type.stp.fis_type = FIS_DATA;
+
+ /* send the new TC out. */
+ return scic_controller_continue_io(sci_req);
+}
+
+static enum sci_status scic_sds_stp_request_pio_data_out_transmit_data(struct scic_sds_request *sci_req)
+{
+
+ struct scu_sgl_element *current_sgl;
+ u32 sgl_offset;
+ u32 remaining_bytes_in_current_sgl = 0;
+ enum sci_status status = SCI_SUCCESS;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+
+ sgl_offset = stp_req->type.pio.request_current.sgl_offset;
+
+ if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
+ current_sgl = &(stp_req->type.pio.request_current.sgl_pair->A);
+ remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->A.length - sgl_offset;
+ } else {
+ current_sgl = &(stp_req->type.pio.request_current.sgl_pair->B);
+ remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->B.length - sgl_offset;
+ }
+
+
+ if (stp_req->type.pio.pio_transfer_bytes > 0) {
+ if (stp_req->type.pio.pio_transfer_bytes >= remaining_bytes_in_current_sgl) {
+ /* recycle the TC and send the H2D Data FIS from (current sgl + sgl_offset) and length = remaining_bytes_in_current_sgl */
+ status = scic_sds_stp_request_pio_data_out_trasmit_data_frame(sci_req, remaining_bytes_in_current_sgl);
+ if (status == SCI_SUCCESS) {
+ stp_req->type.pio.pio_transfer_bytes -= remaining_bytes_in_current_sgl;
+
+ /* update the current sgl, sgl_offset and save for future */
+ current_sgl = scic_sds_stp_request_pio_get_next_sgl(stp_req);
+ sgl_offset = 0;
+ }
+ } else if (stp_req->type.pio.pio_transfer_bytes < remaining_bytes_in_current_sgl) {
+ /* recycle the TC and send the H2D Data FIS from (current sgl + sgl_offset) and length = type.pio.pio_transfer_bytes */
+ scic_sds_stp_request_pio_data_out_trasmit_data_frame(sci_req, stp_req->type.pio.pio_transfer_bytes);
+
+ if (status == SCI_SUCCESS) {
+ /* Sgl offset will be adjusted and saved for future */
+ sgl_offset += stp_req->type.pio.pio_transfer_bytes;
+ current_sgl->address_lower += stp_req->type.pio.pio_transfer_bytes;
+ stp_req->type.pio.pio_transfer_bytes = 0;
+ }
+ }
+ }
+
+ if (status == SCI_SUCCESS) {
+ stp_req->type.pio.request_current.sgl_offset = sgl_offset;
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @stp_request: The request that is used for the SGL processing.
+ * @data_buffer: The buffer of data to be copied.
+ * @length: The length of the data transfer.
+ *
+ * Copy the data from the buffer for the length specified to the IO reqeust SGL
+ * specified data region. enum sci_status
+ */
+static enum sci_status
+scic_sds_stp_request_pio_data_in_copy_data_buffer(struct scic_sds_stp_request *stp_req,
+ u8 *data_buf, u32 len)
+{
+ struct scic_sds_request *sci_req;
+ struct isci_request *ireq;
+ u8 *src_addr;
+ int copy_len;
+ struct sas_task *task;
+ struct scatterlist *sg;
+ void *kaddr;
+ int total_len = len;
+
+ sci_req = to_sci_req(stp_req);
+ ireq = sci_req_to_ireq(sci_req);
+ task = isci_request_access_task(ireq);
+ src_addr = data_buf;
+
+ if (task->num_scatter > 0) {
+ sg = task->scatter;
+
+ while (total_len > 0) {
+ struct page *page = sg_page(sg);
+
+ copy_len = min_t(int, total_len, sg_dma_len(sg));
+ kaddr = kmap_atomic(page, KM_IRQ0);
+ memcpy(kaddr + sg->offset, src_addr, copy_len);
+ kunmap_atomic(kaddr, KM_IRQ0);
+ total_len -= copy_len;
+ src_addr += copy_len;
+ sg = sg_next(sg);
+ }
+ } else {
+ BUG_ON(task->total_xfer_len < total_len);
+ memcpy(task->scatter, src_addr, total_len);
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @sci_req: The PIO DATA IN request that is to receive the data.
+ * @data_buffer: The buffer to copy from.
+ *
+ * Copy the data buffer to the io request data region. enum sci_status
+ */
+static enum sci_status scic_sds_stp_request_pio_data_in_copy_data(
+ struct scic_sds_stp_request *sci_req,
+ u8 *data_buffer)
+{
+ enum sci_status status;
+
+ /*
+ * If there is less than 1K remaining in the transfer request
+ * copy just the data for the transfer */
+ if (sci_req->type.pio.pio_transfer_bytes < SCU_MAX_FRAME_BUFFER_SIZE) {
+ status = scic_sds_stp_request_pio_data_in_copy_data_buffer(
+ sci_req, data_buffer, sci_req->type.pio.pio_transfer_bytes);
+
+ if (status == SCI_SUCCESS)
+ sci_req->type.pio.pio_transfer_bytes = 0;
+ } else {
+ /* We are transfering the whole frame so copy */
+ status = scic_sds_stp_request_pio_data_in_copy_data_buffer(
+ sci_req, data_buffer, SCU_MAX_FRAME_BUFFER_SIZE);
+
+ if (status == SCI_SUCCESS)
+ sci_req->type.pio.pio_transfer_bytes -= SCU_MAX_FRAME_BUFFER_SIZE;
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * enum sci_status
+ */
+static enum sci_status scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ enum sci_status status = SCI_SUCCESS;
+
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED
+ );
+ break;
+ }
+
+ return status;
+}
+
+static enum sci_status scic_sds_stp_request_pio_await_frame_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ struct sas_task *task = isci_request_access_task(ireq);
+ struct dev_to_host_fis *frame_header;
+ enum sci_status status;
+ u32 *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame header "
+ "for frame index %d, status %x\n",
+ __func__, stp_req, frame_index, status);
+ return status;
+ }
+
+ switch (frame_header->fis_type) {
+ case FIS_PIO_SETUP:
+ /* Get from the frame buffer the PIO Setup Data */
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ /* Get the data from the PIO Setup The SCU Hardware returns
+ * first word in the frame_header and the rest of the data is in
+ * the frame buffer so we need to back up one dword
+ */
+
+ /* transfer_count: first 16bits in the 4th dword */
+ stp_req->type.pio.pio_transfer_bytes = frame_buffer[3] & 0xffff;
+
+ /* ending_status: 4th byte in the 3rd dword */
+ stp_req->type.pio.ending_status = (frame_buffer[2] >> 24) & 0xff;
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+
+ sci_req->stp.rsp.status = stp_req->type.pio.ending_status;
+
+ /* The next state is dependent on whether the
+ * request was PIO Data-in or Data out
+ */
+ if (task->data_dir == DMA_FROM_DEVICE) {
+ sci_base_state_machine_change_state(&sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE);
+ } else if (task->data_dir == DMA_TO_DEVICE) {
+ /* Transmit data */
+ status = scic_sds_stp_request_pio_data_out_transmit_data(sci_req);
+ if (status != SCI_SUCCESS)
+ break;
+ sci_base_state_machine_change_state(&sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE);
+ }
+ break;
+ case FIS_SETDEVBITS:
+ sci_base_state_machine_change_state(&sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
+ break;
+ case FIS_REGD2H:
+ if (frame_header->status & ATA_BUSY) {
+ /* Now why is the drive sending a D2H Register FIS when
+ * it is still busy? Do nothing since we are still in
+ * the right state.
+ */
+ dev_dbg(scic_to_dev(scic),
+ "%s: SCIC PIO Request 0x%p received "
+ "D2H Register FIS with BSY status "
+ "0x%x\n", __func__, stp_req,
+ frame_header->status);
+ break;
+ }
+
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.req,
+ frame_header,
+ frame_buffer);
+
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ default:
+ /* FIXME: what do we do here? */
+ break;
+ }
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
+static enum sci_status scic_sds_stp_request_pio_data_in_await_data_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ struct dev_to_host_fis *frame_header;
+ struct sata_fis_data *frame_buffer;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame header "
+ "for frame index %d, status %x\n",
+ __func__, stp_req, frame_index, status);
+ return status;
+ }
+
+ if (frame_header->fis_type == FIS_DATA) {
+ if (stp_req->type.pio.request_current.sgl_pair == NULL) {
+ sci_req->saved_rx_frame_index = frame_index;
+ stp_req->type.pio.pio_transfer_bytes = 0;
+ } else {
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ status = scic_sds_stp_request_pio_data_in_copy_data(stp_req,
+ (u8 *)frame_buffer);
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+ }
+
+ /* Check for the end of the transfer, are there more
+ * bytes remaining for this data transfer
+ */
+ if (status != SCI_SUCCESS ||
+ stp_req->type.pio.pio_transfer_bytes != 0)
+ return status;
+
+ if ((stp_req->type.pio.ending_status & ATA_BUSY) == 0) {
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ } else {
+ sci_base_state_machine_change_state(&sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
+ }
+ } else {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC PIO Request 0x%p received frame %d "
+ "with fis type 0x%02x when expecting a data "
+ "fis.\n", __func__, stp_req, frame_index,
+ frame_header->fis_type);
+
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_FAILURE_IO_REQUIRES_SCSI_ABORT);
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+ }
+
+ return status;
+}
+
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * enum sci_status
+ */
+static enum sci_status scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler(
+
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ enum sci_status status = SCI_SUCCESS;
+ bool all_frames_transferred = false;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ /* Transmit data */
+ if (stp_req->type.pio.pio_transfer_bytes != 0) {
+ status = scic_sds_stp_request_pio_data_out_transmit_data(sci_req);
+ if (status == SCI_SUCCESS) {
+ if (stp_req->type.pio.pio_transfer_bytes == 0)
+ all_frames_transferred = true;
+ }
+ } else if (stp_req->type.pio.pio_transfer_bytes == 0) {
+ /*
+ * this will happen if the all data is written at the
+ * first time after the pio setup fis is received
+ */
+ all_frames_transferred = true;
+ }
+
+ /* all data transferred. */
+ if (all_frames_transferred) {
+ /*
+ * Change the state to SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_FRAME_SUBSTATE
+ * and wait for PIO_SETUP fis / or D2H REg fis. */
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+ }
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED
+ );
+ break;
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @request: This is the request which is receiving the event.
+ * @event_code: This is the event code that the request on which the request is
+ * expected to take action.
+ *
+ * This method will handle any link layer events while waiting for the data
+ * frame. enum sci_status SCI_SUCCESS SCI_FAILURE
+ */
+static enum sci_status scic_sds_stp_request_pio_data_in_await_data_event_handler(
+ struct scic_sds_request *request,
+ u32 event_code)
+{
+ enum sci_status status;
+
+ switch (scu_get_event_specifier(event_code)) {
+ case SCU_TASK_DONE_CRC_ERR << SCU_EVENT_SPECIFIC_CODE_SHIFT:
+ /*
+ * We are waiting for data and the SCU has R_ERR the data frame.
+ * Go back to waiting for the D2H Register FIS */
+ sci_base_state_machine_change_state(
+ &request->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+
+ status = SCI_SUCCESS;
+ break;
+
+ default:
+ dev_err(scic_to_dev(request->owning_controller),
+ "%s: SCIC PIO Request 0x%p received unexpected "
+ "event 0x%08x\n",
+ __func__, request, event_code);
+
+ /* / @todo Should we fail the PIO request when we get an unexpected event? */
+ status = SCI_FAILURE;
+ break;
+ }
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_pio_substate_handler_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_pio_await_frame_frame_handler
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .event_handler = scic_sds_stp_request_pio_data_in_await_data_event_handler,
+ .frame_handler = scic_sds_stp_request_pio_data_in_await_data_frame_handler
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler,
+ }
+};
+
+static void scic_sds_stp_request_started_pio_await_h2d_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_pio_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE
+ );
+
+ scic_sds_remote_device_set_working_request(
+ sci_req->target_device, sci_req);
+}
+
+static void scic_sds_stp_request_started_pio_await_frame_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_pio_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+}
+
+static void scic_sds_stp_request_started_pio_data_in_await_data_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_pio_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE
+ );
+}
+
+static void scic_sds_stp_request_started_pio_data_out_transmit_data_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_pio_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE
+ );
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state scic_sds_stp_request_started_pio_substate_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_await_h2d_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_await_frame_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_data_in_await_data_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_data_out_transmit_data_enter,
+ }
+};
+
+enum sci_status
+scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
+ bool copy_rx_frame)
+{
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_stp_pio_request *pio = &stp_req->type.pio;
+
+ scic_sds_stp_non_ncq_request_construct(sci_req);
+
+ scu_stp_raw_request_construct_task_context(stp_req,
+ sci_req->task_context_buffer);
+
+ pio->current_transfer_bytes = 0;
+ pio->ending_error = 0;
+ pio->ending_status = 0;
+
+ pio->request_current.sgl_offset = 0;
+ pio->request_current.sgl_set = SCU_SGL_ELEMENT_PAIR_A;
+
+ if (copy_rx_frame) {
+ scic_sds_request_build_sgl(sci_req);
+ /* Since the IO request copy of the TC contains the same data as
+ * the actual TC this pointer is vaild for either.
+ */
+ pio->request_current.sgl_pair = &sci_req->task_context_buffer->sgl_pair_ab;
+ } else {
+ /* The user does not want the data copied to the SGL buffer location */
+ pio->request_current.sgl_pair = NULL;
+ }
+
+ sci_base_state_machine_construct(&sci_req->started_substate_machine,
+ sci_req,
+ scic_sds_stp_request_started_pio_substate_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE);
+
+ return SCI_SUCCESS;
+}
+
+static void scic_sds_stp_request_udma_complete_request(
+ struct scic_sds_request *request,
+ u32 scu_status,
+ enum sci_status sci_status)
+{
+ scic_sds_request_set_status(request, scu_status, sci_status);
+ sci_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+}
+
+static enum sci_status scic_sds_stp_request_udma_general_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ struct dev_to_host_fis *frame_header;
+ enum sci_status status;
+ u32 *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if ((status == SCI_SUCCESS) &&
+ (frame_header->fis_type == FIS_REGD2H)) {
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+ }
+
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
+static enum sci_status scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ enum sci_status status = SCI_SUCCESS;
+
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS);
+ break;
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_FIS):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
+ /*
+ * We must check ther response buffer to see if the D2H Register FIS was
+ * received before we got the TC completion. */
+ if (sci_req->stp.rsp.fis_type == FIS_REGD2H) {
+ scic_sds_remote_device_suspend(sci_req->target_device,
+ SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
+
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ } else {
+ /*
+ * If we have an error completion status for the TC then we can expect a
+ * D2H register FIS from the device so we must change state to wait for it */
+ sci_base_state_machine_change_state(&sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE);
+ }
+ break;
+
+ /*
+ * / @todo Check to see if any of these completion status need to wait for
+ * / the device to host register fis. */
+ /* / @todo We can retry the command for SCU_TASK_DONE_CMD_LL_R_ERR - this comes only for B0 */
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_INV_FIS_LEN):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_R_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CMD_LL_R_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CRC_ERR):
+ scic_sds_remote_device_suspend(sci_req->target_device,
+ SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
+ /* Fall through to the default case */
+ default:
+ /* All other completion status cause the IO to be complete. */
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ break;
+ }
+
+ return status;
+}
+
+static enum sci_status scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+
+ /* Use the general frame handler to copy the resposne data */
+ status = scic_sds_stp_request_udma_general_frame_handler(sci_req, frame_index);
+
+ if (status != SCI_SUCCESS)
+ return status;
+
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_udma_substate_handler_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler,
+ .frame_handler = scic_sds_stp_request_udma_general_frame_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler,
+ },
+};
+
+static void scic_sds_stp_request_started_udma_await_tc_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_udma_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
+ );
+}
+
+/**
+ *
+ *
+ * This state is entered when there is an TC completion failure. The hardware
+ * received an unexpected condition while processing the IO request and now
+ * will UF the D2H register FIS to complete the IO.
+ */
+static void scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_udma_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE
+ );
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state scic_sds_stp_request_started_udma_substate_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_udma_await_tc_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter,
+ },
+};
+
+enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
+ u32 len,
+ enum dma_data_direction dir)
+{
+ scic_sds_stp_non_ncq_request_construct(sci_req);
+
+ scic_sds_stp_optimized_request_construct(sci_req, SCU_TASK_TYPE_DMA_IN,
+ len, dir);
+
+ sci_base_state_machine_construct(
+ &sci_req->started_substate_machine,
+ sci_req,
+ scic_sds_stp_request_started_udma_substate_table,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
+ );
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * This method processes a TC completion. The expected TC completion is for
+ * the transmission of the H2D register FIS containing the SATA/STP non-data
+ * request. This method always successfully processes the TC completion.
+ * SCI_SUCCESS This value is always returned.
+ */
+static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * This method processes a TC completion. The expected TC completion is for
+ * the transmission of the H2D register FIS containing the SATA/STP non-data
+ * request. This method always successfully processes the TC completion.
+ * SCI_SUCCESS This value is always returned.
+ */
+static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->started_substate_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @request: This parameter specifies the request for which a frame has been
+ * received.
+ * @frame_index: This parameter specifies the index of the frame that has been
+ * received.
+ *
+ * This method processes frames received from the target while waiting for a
+ * device to host register FIS. If a non-register FIS is received during this
+ * time, it is treated as a protocol violation from an IO perspective. Indicate
+ * if the received frame was processed successfully.
+ */
+static enum sci_status scic_sds_stp_request_soft_reset_await_d2h_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame header "
+ "for frame index %d, status %x\n",
+ __func__, stp_req, frame_index, status);
+ return status;
+ }
+
+ switch (frame_header->fis_type) {
+ case FIS_REGD2H:
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+
+ /* The command has completed with error */
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ break;
+
+ default:
+ dev_warn(scic_to_dev(scic),
+ "%s: IO Request:0x%p Frame Id:%d protocol "
+ "violation occurred\n", __func__, stp_req,
+ frame_index);
+
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_UNEXP_FIS,
+ SCI_FAILURE_PROTOCOL_VIOLATION);
+ break;
+ }
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Frame has been decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_soft_reset_substate_handler_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_soft_reset_await_d2h_frame_handler,
+ },
+};
+
+static void scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_soft_reset_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE
+ );
+
+ scic_sds_remote_device_set_working_request(
+ sci_req->target_device, sci_req
+ );
+}
+
+static void scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+ struct scu_task_context *task_context;
+ struct host_to_dev_fis *h2d_fis;
+ enum sci_status status;
+
+ /* Clear the SRST bit */
+ h2d_fis = &sci_req->stp.cmd;
+ h2d_fis->control = 0;
+
+ /* Clear the TC control bit */
+ task_context = scic_sds_controller_get_task_context_buffer(
+ sci_req->owning_controller, sci_req->io_tag);
+ task_context->control_frame = 0;
+
+ status = scic_controller_continue_io(sci_req);
+ if (status == SCI_SUCCESS) {
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_soft_reset_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
+ );
+ }
+}
+
+static void scic_sds_stp_request_started_soft_reset_await_d2h_response_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_stp_request_started_soft_reset_substate_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
+ );
+}
+
+static const struct sci_base_state scic_sds_stp_request_started_soft_reset_substate_table[] = {
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_d2h_response_enter,
+ },
+};
+
+enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req)
+{
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+
+ scic_sds_stp_non_ncq_request_construct(sci_req);
+
+ /* Build the STP task context structure */
+ scu_stp_raw_request_construct_task_context(stp_req, sci_req->task_context_buffer);
+
+ sci_base_state_machine_construct(&sci_req->started_substate_machine,
+ sci_req,
+ scic_sds_stp_request_started_soft_reset_substate_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE);
+
+ return SCI_SUCCESS;
+}
--- /dev/null
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCIC_SDS_STP_REQUEST_T_
+#define _SCIC_SDS_STP_REQUEST_T_
+
+#include <linux/dma-mapping.h>
+#include <scsi/sas.h>
+
+struct scic_sds_stp_request {
+ union {
+ u32 ncq;
+
+ u32 udma;
+
+ struct scic_sds_stp_pio_request {
+ /**
+ * Total transfer for the entire PIO request recorded at request constuction
+ * time.
+ *
+ * @todo Should we just decrement this value for each byte of data transitted
+ * or received to elemenate the current_transfer_bytes field?
+ */
+ u32 total_transfer_bytes;
+
+ /**
+ * Total number of bytes received/transmitted in data frames since the start
+ * of the IO request. At the end of the IO request this should equal the
+ * total_transfer_bytes.
+ */
+ u32 current_transfer_bytes;
+
+ /**
+ * The number of bytes requested in the in the PIO setup.
+ */
+ u32 pio_transfer_bytes;
+
+ /**
+ * PIO Setup ending status value to tell us if we need to wait for another FIS
+ * or if the transfer is complete. On the receipt of a D2H FIS this will be
+ * the status field of that FIS.
+ */
+ u8 ending_status;
+
+ /**
+ * On receipt of a D2H FIS this will be the ending error field if the
+ * ending_status has the SATA_STATUS_ERR bit set.
+ */
+ u8 ending_error;
+
+ struct scic_sds_request_pio_sgl {
+ struct scu_sgl_element_pair *sgl_pair;
+ u8 sgl_set;
+ u32 sgl_offset;
+ } request_current;
+ } pio;
+
+ struct {
+ /**
+ * The number of bytes requested in the PIO setup before CDB data frame.
+ */
+ u32 device_preferred_cdb_length;
+ } packet;
+ } type;
+};
+
+/**
+ * enum scic_sds_stp_request_started_udma_substates - This enumeration depicts
+ * the various sub-states associated with a SATA/STP UDMA protocol operation.
+ *
+ *
+ */
+enum scic_sds_stp_request_started_udma_substates {
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE,
+};
+
+/**
+ * enum scic_sds_stp_request_started_non_data_substates - This enumeration
+ * depicts the various sub-states associated with a SATA/STP non-data
+ * protocol operation.
+ *
+ *
+ */
+enum scic_sds_stp_request_started_non_data_substates {
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE,
+};
+
+/**
+ * enum scic_sds_stp_request_started_soft_reset_substates - THis enumeration
+ * depicts the various sub-states associated with a SATA/STP soft reset
+ * operation.
+ *
+ *
+ */
+enum scic_sds_stp_request_started_soft_reset_substates {
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
+};
+
+/* This is the enumeration of the SATA PIO DATA IN started substate machine. */
+enum _scic_sds_stp_request_started_pio_substates {
+ /**
+ * While in this state the IO request object is waiting for the TC completion
+ * notification for the H2D Register FIS
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting for either a PIO Setup
+ * FIS or a D2H register FIS. The type of frame received is based on the
+ * result of the prior frame and line conditions.
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting for a DATA frame from
+ * the device.
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting to transmit the next data
+ * frame to the device.
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
+};
+
+struct scic_sds_request;
+
+enum sci_status scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
+ bool copy_rx_frame);
+enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
+ u32 transfer_length,
+ enum dma_data_direction dir);
+enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
+ u32 transfer_length,
+ enum dma_data_direction dir);
+#endif /* _SCIC_SDS_STP_REQUEST_T_ */
#include <linux/completion.h>
#include <linux/irqflags.h>
#include "sas.h"
-#include "scic_task_request.h"
-#include "scic_io_request.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "isci.h"
#include "request.h"
#include "sata.h"
#include "task.h"
-#include "scic_sds_request.h"
#include "timers.h"
/**
#include "host.h"
#include "unsolicited_frame_control.h"
#include "registers.h"
-#include "sci_util.h"
/**
* This method will program the unsolicited frames (UFs) into the UF address
for (index = 0; index < unused_uf_header_entries; index++) {
uf = &uf_control->buffers.array[index];
- sci_cb_make_physical_address(
- uf_control->address_table.array[index], 0, 0
- );
uf->buffer = NULL;
+ uf_control->address_table.array[index] = 0;
uf->header = &uf_control->headers.array[index];
uf->state = UNSOLICITED_FRAME_EMPTY;
}
projects / deliverable / linux.git / commitdiff
