[deliverable/linux.git] / drivers / scsi / isci / port.c

/*
 * 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.
 */

/**
 * This file contains the isci port implementation.
 *
 *
 */


#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 "request.h"
#include "core/scic_sds_controller.h"

static void isci_port_change_state(
	struct isci_port *isci_port,
	enum isci_status status);


/**
 * isci_port_init() - This function initializes the given isci_port object.
 * @isci_port: This parameter specifies the port object to be initialized.
 * @isci_host: This parameter specifies parent controller object for the port.
 * @index: This parameter specifies which SCU port the isci_port associates
 *    with. Generally, SCU port 0 relates to isci_port 0, etc.
 *
 */
void isci_port_init(
	struct isci_port *isci_port,
	struct isci_host *isci_host,
	int index)
{
	struct scic_sds_port *scic_port;
	struct scic_sds_controller *controller = isci_host->core_controller;

	INIT_LIST_HEAD(&isci_port->remote_dev_list);
	INIT_LIST_HEAD(&isci_port->domain_dev_list);
	spin_lock_init(&isci_port->state_lock);
	init_completion(&isci_port->start_complete);
	isci_port->isci_host = isci_host;
	isci_port_change_state(isci_port, isci_freed);

	(void)scic_controller_get_port_handle(controller, index, &scic_port);
	isci_port->sci_port_handle = scic_port;
	scic_port->iport = isci_port;
}


/**
 * isci_port_get_state() - This function gets the status of the port object.
 * @isci_port: This parameter points to the isci_port object
 *
 * status of the object as a isci_status enum.
 */
enum isci_status isci_port_get_state(
	struct isci_port *isci_port)
{
	return isci_port->status;
}

static void isci_port_change_state(
	struct isci_port *isci_port,
	enum isci_status status)
{
	unsigned long flags;

	dev_dbg(&isci_port->isci_host->pdev->dev,
		"%s: isci_port = %p, state = 0x%x\n",
		__func__, isci_port, status);

	spin_lock_irqsave(&isci_port->state_lock, flags);
	isci_port->status = status;
	spin_unlock_irqrestore(&isci_port->state_lock, flags);
}

void isci_port_bc_change_received(
	struct isci_host *isci_host,
	struct scic_sds_port *port,
	struct scic_sds_phy *phy)
{
	struct isci_phy *isci_phy = phy->iphy;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_phy = %p, sas_phy = %p\n",
		__func__,
		isci_phy,
		&isci_phy->sas_phy);

	isci_host->sas_ha.notify_port_event(
		&isci_phy->sas_phy,
		PORTE_BROADCAST_RCVD
		);

	scic_port_enable_broadcast_change_notification(port);
}

/**
 * isci_port_link_up() - This function is called by the sci core when a link
 *    becomes active. the identify address frame is retrieved from the core and
 *    a notify port event is sent to libsas.
 * @isci_host: This parameter specifies the isci host object.
 * @port: This parameter specifies the sci port with the active link.
 * @phy: This parameter specifies the sci phy with the active link.
 *
 */
void isci_port_link_up(
	struct isci_host *isci_host,
	struct scic_sds_port *port,
	struct scic_sds_phy *phy)
{
	unsigned long flags;
	struct scic_port_properties properties;
	struct isci_phy *isci_phy = phy->iphy;
	struct isci_port *isci_port = port->iport;
	unsigned long success = true;

	BUG_ON(isci_phy->isci_port != NULL);

	isci_phy->isci_port = isci_port;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_port = %p\n",
		__func__, isci_port);

	spin_lock_irqsave(&isci_phy->sas_phy.frame_rcvd_lock, flags);

	isci_port_change_state(isci_phy->isci_port, isci_starting);

	scic_port_get_properties(port, &properties);

	if (phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) {
		u64 attached_sas_address;

		isci_phy->sas_phy.oob_mode = SATA_OOB_MODE;
		isci_phy->sas_phy.frame_rcvd_size = sizeof(struct dev_to_host_fis);

		/*
		 * For direct-attached SATA devices, the SCI core will
		 * automagically assign a SAS address to the end device
		 * for the purpose of creating a port. This SAS address
		 * will not be the same as assigned to the PHY and needs
		 * to be obtained from struct scic_port_properties properties.
		 */
		attached_sas_address = properties.remote.sas_address.high;
		attached_sas_address <<= 32;
		attached_sas_address |= properties.remote.sas_address.low;
		swab64s(&attached_sas_address);

		memcpy(&isci_phy->sas_phy.attached_sas_addr,
		       &attached_sas_address, sizeof(attached_sas_address));
	} else if (phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
		isci_phy->sas_phy.oob_mode = SAS_OOB_MODE;
		isci_phy->sas_phy.frame_rcvd_size = sizeof(struct sas_identify_frame);

		/* Copy the attached SAS address from the IAF */
		memcpy(isci_phy->sas_phy.attached_sas_addr,
		       isci_phy->frame_rcvd.iaf.sas_addr, SAS_ADDR_SIZE);
	} else {
		dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
		success = false;
	}

	isci_phy->sas_phy.phy->negotiated_linkrate = sci_phy_linkrate(phy);

	spin_unlock_irqrestore(&isci_phy->sas_phy.frame_rcvd_lock, flags);

	/* Notify libsas that we have an address frame, if indeed
	 * we've found an SSP, SMP, or STP target */
	if (success)
		isci_host->sas_ha.notify_port_event(&isci_phy->sas_phy,
						    PORTE_BYTES_DMAED);
}


/**
 * isci_port_link_down() - This function is called by the sci core when a link
 *    becomes inactive.
 * @isci_host: This parameter specifies the isci host object.
 * @phy: This parameter specifies the isci phy with the active link.
 * @port: This parameter specifies the isci port with the active link.
 *
 */
void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy,
			 struct isci_port *isci_port)
{
	struct isci_remote_device *isci_device;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_port = %p\n", __func__, isci_port);

	if (isci_port) {

		/* check to see if this is the last phy on this port. */
		if (isci_phy->sas_phy.port
		    && isci_phy->sas_phy.port->num_phys == 1) {

			/* change the state for all devices on this port.
			 * The next task sent to this device will be returned
			 * as SAS_TASK_UNDELIVERED, and the scsi mid layer
			 * will remove the target
			 */
			list_for_each_entry(isci_device,
					    &isci_port->remote_dev_list,
					    node) {
				dev_dbg(&isci_host->pdev->dev,
					"%s: isci_device = %p\n",
					__func__, isci_device);
				isci_remote_device_change_state(isci_device,
								isci_stopping);
			}
		}
		isci_port_change_state(isci_port, isci_stopping);
	}

	/* Notify libsas of the borken link, this will trigger calls to our
	 * isci_port_deformed and isci_dev_gone functions.
	 */
	sas_phy_disconnected(&isci_phy->sas_phy);
	isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
					   PHYE_LOSS_OF_SIGNAL);

	isci_phy->isci_port = NULL;

	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_port = %p - Done\n", __func__, isci_port);
}


/**
 * isci_port_deformed() - This function is called by libsas when a port becomes
 *    inactive.
 * @phy: This parameter specifies the libsas phy with the inactive port.
 *
 */
void isci_port_deformed(
	struct asd_sas_phy *phy)
{
	pr_debug("%s: sas_phy = %p\n", __func__, phy);
}

/**
 * isci_port_formed() - This function is called by libsas when a port becomes
 *    active.
 * @phy: This parameter specifies the libsas phy with the active port.
 *
 */
void isci_port_formed(
	struct asd_sas_phy *phy)
{
	pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
}

/**
 * isci_port_ready() - This function is called by the sci core when a link
 *    becomes ready.
 * @isci_host: This parameter specifies the isci host object.
 * @port: This parameter specifies the sci port with the active link.
 *
 */
void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
{
	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_port = %p\n", __func__, isci_port);

	complete_all(&isci_port->start_complete);
	isci_port_change_state(isci_port, isci_ready);
	return;
}

/**
 * isci_port_not_ready() - This function is called by the sci core when a link
 *    is not ready. All remote devices on this link will be removed if they are
 *    in the stopping state.
 * @isci_host: This parameter specifies the isci host object.
 * @port: This parameter specifies the sci port with the active link.
 *
 */
void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
{
	dev_dbg(&isci_host->pdev->dev,
		"%s: isci_port = %p\n", __func__, isci_port);
}

/**
 * isci_port_hard_reset_complete() - This function is called by the sci core
 *    when the hard reset complete notification has been received.
 * @port: This parameter specifies the sci port with the active link.
 * @completion_status: This parameter specifies the core status for the reset
 *    process.
 *
 */
void isci_port_hard_reset_complete(struct isci_port *isci_port,
				   enum sci_status completion_status)
{
	dev_dbg(&isci_port->isci_host->pdev->dev,
		"%s: isci_port = %p, completion_status=%x\n",
		     __func__, isci_port, completion_status);

	/* Save the status of the hard reset from the port. */
	isci_port->hard_reset_status = completion_status;

	complete_all(&isci_port->hard_reset_complete);
}

int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
				 struct isci_phy *iphy)
{
	unsigned long flags;
	enum sci_status status;
	int ret = TMF_RESP_FUNC_COMPLETE;

	dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
		__func__, iport);

	init_completion(&iport->hard_reset_complete);

	spin_lock_irqsave(&ihost->scic_lock, flags);

	#define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
	status = scic_port_hard_reset(iport->sci_port_handle,
				      ISCI_PORT_RESET_TIMEOUT);

	spin_unlock_irqrestore(&ihost->scic_lock, flags);

	if (status == SCI_SUCCESS) {
		wait_for_completion(&iport->hard_reset_complete);

		dev_dbg(&ihost->pdev->dev,
			"%s: iport = %p; hard reset completion\n",
			__func__, iport);

		if (iport->hard_reset_status != SCI_SUCCESS)
			ret = TMF_RESP_FUNC_FAILED;
	} else {
		ret = TMF_RESP_FUNC_FAILED;

		dev_err(&ihost->pdev->dev,
			"%s: iport = %p; scic_port_hard_reset call"
			" failed 0x%x\n",
			__func__, iport, status);

	}

	/* If the hard reset for the port has failed, consider this
	 * the same as link failures on all phys in the port.
	 */
	if (ret != TMF_RESP_FUNC_COMPLETE) {
		dev_err(&ihost->pdev->dev,
			"%s: iport = %p; hard reset failed "
			"(0x%x) - sending link down to libsas for phy %p\n",
			__func__, iport, iport->hard_reset_status, iphy);

		isci_port_link_down(ihost, iphy, iport);
	}

	return ret;
}

/**
 * isci_port_invalid_link_up() - This function informs the SCI Core user that
 *    a phy/link became ready, but the phy is not allowed in the port.  In some
 *    situations the underlying hardware only allows for certain phy to port
 *    mappings.  If these mappings are violated, then this API is invoked.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.
 * @phy: This parameter specifies the phy that came ready, but the phy can't be
 *    a valid member of the port.
 *
 */
void isci_port_invalid_link_up(struct scic_sds_controller *scic,
				      struct scic_sds_port *sci_port,
				      struct scic_sds_phy *phy)
{
	struct isci_host *ihost = scic->ihost;

	dev_warn(&ihost->pdev->dev, "Invalid link up!\n");
}

void isci_port_stop_complete(struct scic_sds_controller *scic,
					  struct scic_sds_port *sci_port,
					  enum sci_status completion_status)
{
	struct isci_host *ihost = scic->ihost;

	dev_dbg(&ihost->pdev->dev, "Port stop complete\n");
}
Commit	Line	Data
6f231dda DW	1	/*
	2	* This file is provided under a dual BSD/GPLv2 license. When using or
	3	* redistributing this file, you may do so under either license.
	4	*
	5	* GPL LICENSE SUMMARY
	6	*
	7	* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of version 2 of the GNU General Public License as
	11	* published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
	21	* The full GNU General Public License is included in this distribution
	22	* in the file called LICENSE.GPL.
	23	*
	24	* BSD LICENSE
	25	*
	26	* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
	27	* All rights reserved.
	28	*
	29	* Redistribution and use in source and binary forms, with or without
	30	* modification, are permitted provided that the following conditions
	31	* are met:
	32	*
	33	* * Redistributions of source code must retain the above copyright
	34	* notice, this list of conditions and the following disclaimer.
	35	* * Redistributions in binary form must reproduce the above copyright
	36	* notice, this list of conditions and the following disclaimer in
	37	* the documentation and/or other materials provided with the
	38	* distribution.
	39	* * Neither the name of Intel Corporation nor the names of its
	40	* contributors may be used to endorse or promote products derived
	41	* from this software without specific prior written permission.
	42	*
	43	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	44	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	45	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	46	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	47	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	48	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	49	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	50	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	51	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	52	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	53	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	54	*/
	55
	56	/**
	57	* This file contains the isci port implementation.
	58	*
	59	*
	60	*/
	61
	62
	63	#include <linux/workqueue.h>
	64	#include "isci.h"
65	#include "scic_io_request.h"
6f231dda DW	66	#include "scic_phy.h"
	67	#include "scic_sds_phy.h"
	68	#include "scic_port.h"
	69	#include "port.h"
	70	#include "request.h"
d3757c3a	71	#include "core/scic_sds_controller.h"
6f231dda DW	72
	73	static void isci_port_change_state(
	74	struct isci_port *isci_port,
	75	enum isci_status status);
	76
	77
	78
	79	/**
	80	* isci_port_init() - This function initializes the given isci_port object.
	81	* @isci_port: This parameter specifies the port object to be initialized.
	82	* @isci_host: This parameter specifies parent controller object for the port.
	83	* @index: This parameter specifies which SCU port the isci_port associates
	84	* with. Generally, SCU port 0 relates to isci_port 0, etc.
	85	*
	86	*/
	87	void isci_port_init(
	88	struct isci_port *isci_port,
	89	struct isci_host *isci_host,
	90	int index)
	91	{
	92	struct scic_sds_port *scic_port;
	93	struct scic_sds_controller *controller = isci_host->core_controller;
	94
	95	INIT_LIST_HEAD(&isci_port->remote_dev_list);
	96	INIT_LIST_HEAD(&isci_port->domain_dev_list);
6f231dda DW	97	spin_lock_init(&isci_port->state_lock);
	98	init_completion(&isci_port->start_complete);
	99	isci_port->isci_host = isci_host;
	100	isci_port_change_state(isci_port, isci_freed);
	101
	102	(void)scic_controller_get_port_handle(controller, index, &scic_port);
6f231dda	103	isci_port->sci_port_handle = scic_port;
115bd1f9	104	scic_port->iport = isci_port;
6f231dda DW	105	}
	106
	107
	108	/**
	109	* isci_port_get_state() - This function gets the status of the port object.
	110	* @isci_port: This parameter points to the isci_port object
	111	*
	112	* status of the object as a isci_status enum.
	113	*/
	114	enum isci_status isci_port_get_state(
	115	struct isci_port *isci_port)
	116	{
	117	return isci_port->status;
	118	}
	119
	120	static void isci_port_change_state(
	121	struct isci_port *isci_port,
	122	enum isci_status status)
	123	{
	124	unsigned long flags;
	125
	126	dev_dbg(&isci_port->isci_host->pdev->dev,
	127	"%s: isci_port = %p, state = 0x%x\n",
	128	__func__, isci_port, status);
	129
	130	spin_lock_irqsave(&isci_port->state_lock, flags);
	131	isci_port->status = status;
	132	spin_unlock_irqrestore(&isci_port->state_lock, flags);
	133	}
	134
	135	void isci_port_bc_change_received(
	136	struct isci_host *isci_host,
	137	struct scic_sds_port *port,
	138	struct scic_sds_phy *phy)
	139	{
e1e72a00	140	struct isci_phy *isci_phy = phy->iphy;
6f231dda DW	141
	142	dev_dbg(&isci_host->pdev->dev,
	143	"%s: isci_phy = %p, sas_phy = %p\n",
	144	__func__,
	145	isci_phy,
	146	&isci_phy->sas_phy);
	147
	148	isci_host->sas_ha.notify_port_event(
	149	&isci_phy->sas_phy,
	150	PORTE_BROADCAST_RCVD
	151	);
	152
	153	scic_port_enable_broadcast_change_notification(port);
	154	}
	155
	156	/**
	157	* isci_port_link_up() - This function is called by the sci core when a link
	158	* becomes active. the identify address frame is retrieved from the core and
	159	* a notify port event is sent to libsas.
	160	* @isci_host: This parameter specifies the isci host object.
	161	* @port: This parameter specifies the sci port with the active link.
	162	* @phy: This parameter specifies the sci phy with the active link.
	163	*
	164	*/
	165	void isci_port_link_up(
	166	struct isci_host *isci_host,
	167	struct scic_sds_port *port,
	168	struct scic_sds_phy *phy)
	169	{
	170	unsigned long flags;
	171	struct scic_port_properties properties;
e1e72a00	172	struct isci_phy *isci_phy = phy->iphy;
115bd1f9	173	struct isci_port *isci_port = port->iport;
6f231dda DW	174	unsigned long success = true;
	175
	176	BUG_ON(isci_phy->isci_port != NULL);
6cb4d6b3	177
6f231dda DW	178	isci_phy->isci_port = isci_port;
	179
	180	dev_dbg(&isci_host->pdev->dev,
	181	"%s: isci_port = %p\n",
	182	__func__, isci_port);
	183
	184	spin_lock_irqsave(&isci_phy->sas_phy.frame_rcvd_lock, flags);
	185
	186	isci_port_change_state(isci_phy->isci_port, isci_starting);
	187
	188	scic_port_get_properties(port, &properties);
	189
d7b90fc3	190	if (phy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) {
150fc6fc	191	u64 attached_sas_address;
6f231dda	192
6f231dda	193	isci_phy->sas_phy.oob_mode = SATA_OOB_MODE;
f2f30080	194	isci_phy->sas_phy.frame_rcvd_size = sizeof(struct dev_to_host_fis);
6f231dda DW	195
	196	/*
	197	* For direct-attached SATA devices, the SCI core will
	198	* automagically assign a SAS address to the end device
	199	* for the purpose of creating a port. This SAS address
	200	* will not be the same as assigned to the PHY and needs
	201	* to be obtained from struct scic_port_properties properties.
	202	*/
150fc6fc DW	203	attached_sas_address = properties.remote.sas_address.high;
	204	attached_sas_address <<= 32;
	205	attached_sas_address \|= properties.remote.sas_address.low;
	206	swab64s(&attached_sas_address);
6f231dda	207
150fc6fc DW	208	memcpy(&isci_phy->sas_phy.attached_sas_addr,
150fc6fc DW	209	&attached_sas_address, sizeof(attached_sas_address));
d7b90fc3	210	} else if (phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
6f231dda	211	isci_phy->sas_phy.oob_mode = SAS_OOB_MODE;
4b7ebd05	212	isci_phy->sas_phy.frame_rcvd_size = sizeof(struct sas_identify_frame);
6f231dda DW	213
	214	/* Copy the attached SAS address from the IAF */
	215	memcpy(isci_phy->sas_phy.attached_sas_addr,
4b7ebd05	216	isci_phy->frame_rcvd.iaf.sas_addr, SAS_ADDR_SIZE);
6f231dda DW	217	} else {
	218	dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
	219	success = false;
	220	}
	221
83e51430 DW	222	isci_phy->sas_phy.phy->negotiated_linkrate = sci_phy_linkrate(phy);
83e51430 DW	223
6f231dda DW	224	spin_unlock_irqrestore(&isci_phy->sas_phy.frame_rcvd_lock, flags);
	225
	226	/* Notify libsas that we have an address frame, if indeed
	227	* we've found an SSP, SMP, or STP target */
	228	if (success)
	229	isci_host->sas_ha.notify_port_event(&isci_phy->sas_phy,
	230	PORTE_BYTES_DMAED);
	231	}
	232
	233
	234	/**
	235	* isci_port_link_down() - This function is called by the sci core when a link
	236	* becomes inactive.
	237	* @isci_host: This parameter specifies the isci host object.
	238	* @phy: This parameter specifies the isci phy with the active link.
	239	* @port: This parameter specifies the isci port with the active link.
	240	*
	241	*/
09d7da13 DJ	242	void isci_port_link_down(struct isci_host isci_host, struct isci_phy isci_phy,
09d7da13 DJ	243	struct isci_port *isci_port)
6f231dda DW	244	{
	245	struct isci_remote_device *isci_device;
	246
	247	dev_dbg(&isci_host->pdev->dev,
	248	"%s: isci_port = %p\n", __func__, isci_port);
	249
	250	if (isci_port) {
	251
	252	/* check to see if this is the last phy on this port. */
	253	if (isci_phy->sas_phy.port
	254	&& isci_phy->sas_phy.port->num_phys == 1) {
	255
	256	/* change the state for all devices on this port.
	257	* The next task sent to this device will be returned
	258	* as SAS_TASK_UNDELIVERED, and the scsi mid layer
	259	* will remove the target
	260	*/
	261	list_for_each_entry(isci_device,
	262	&isci_port->remote_dev_list,
	263	node) {
	264	dev_dbg(&isci_host->pdev->dev,
	265	"%s: isci_device = %p\n",
	266	__func__, isci_device);
	267	isci_remote_device_change_state(isci_device,
	268	isci_stopping);
	269	}
	270	}
	271	isci_port_change_state(isci_port, isci_stopping);
	272	}
	273
	274	/* Notify libsas of the borken link, this will trigger calls to our
	275	* isci_port_deformed and isci_dev_gone functions.
	276	*/
	277	sas_phy_disconnected(&isci_phy->sas_phy);
	278	isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
	279	PHYE_LOSS_OF_SIGNAL);
	280
	281	isci_phy->isci_port = NULL;
	282
	283	dev_dbg(&isci_host->pdev->dev,
	284	"%s: isci_port = %p - Done\n", __func__, isci_port);
	285	}
	286
	287
	288	/**
	289	* isci_port_deformed() - This function is called by libsas when a port becomes
	290	* inactive.
	291	* @phy: This parameter specifies the libsas phy with the inactive port.
	292	*
	293	*/
	294	void isci_port_deformed(
	295	struct asd_sas_phy *phy)
	296	{
	297	pr_debug("%s: sas_phy = %p\n", __func__, phy);
	298	}
	299
	300	/**
	301	* isci_port_formed() - This function is called by libsas when a port becomes
	302	* active.
	303	* @phy: This parameter specifies the libsas phy with the active port.
	304	*
	305	*/
	306	void isci_port_formed(
	307	struct asd_sas_phy *phy)
308	{
309	pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
310	}
311
312	/**
313	* isci_port_ready() - This function is called by the sci core when a link
314	* becomes ready.
315	* @isci_host: This parameter specifies the isci host object.
316	* @port: This parameter specifies the sci port with the active link.
317	*
318	*/
09d7da13	319	void isci_port_ready(struct isci_host isci_host, struct isci_port isci_port)
6f231dda DW	320	{
	321	dev_dbg(&isci_host->pdev->dev,
	322	"%s: isci_port = %p\n", __func__, isci_port);
	323
	324	complete_all(&isci_port->start_complete);
	325	isci_port_change_state(isci_port, isci_ready);
	326	return;
	327	}
	328
	329	/**
	330	* isci_port_not_ready() - This function is called by the sci core when a link
	331	* is not ready. All remote devices on this link will be removed if they are
	332	* in the stopping state.
	333	* @isci_host: This parameter specifies the isci host object.
	334	* @port: This parameter specifies the sci port with the active link.
	335	*
	336	*/
09d7da13	337	void isci_port_not_ready(struct isci_host isci_host, struct isci_port isci_port)
6f231dda DW	338	{
	339	dev_dbg(&isci_host->pdev->dev,
	340	"%s: isci_port = %p\n", __func__, isci_port);
	341	}
	342
	343	/**
	344	* isci_port_hard_reset_complete() - This function is called by the sci core
	345	* when the hard reset complete notification has been received.
	346	* @port: This parameter specifies the sci port with the active link.
	347	* @completion_status: This parameter specifies the core status for the reset
	348	* process.
	349	*
	350	*/
09d7da13 DJ	351	void isci_port_hard_reset_complete(struct isci_port *isci_port,
09d7da13 DJ	352	enum sci_status completion_status)
6f231dda DW	353	{
	354	dev_dbg(&isci_port->isci_host->pdev->dev,
	355	"%s: isci_port = %p, completion_status=%x\n",
	356	__func__, isci_port, completion_status);
	357
	358	/* Save the status of the hard reset from the port. */
	359	isci_port->hard_reset_status = completion_status;
	360
	361	complete_all(&isci_port->hard_reset_complete);
	362	}
4393aa4e DW	363
	364	int isci_port_perform_hard_reset(struct isci_host ihost, struct isci_port iport,
	365	struct isci_phy *iphy)
6f231dda	366	{
4393aa4e	367	unsigned long flags;
6f231dda DW	368	enum sci_status status;
6f231dda DW	369	int ret = TMF_RESP_FUNC_COMPLETE;
6f231dda	370
4393aa4e DW	371	dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
4393aa4e DW	372	__func__, iport);
6f231dda	373
4393aa4e	374	init_completion(&iport->hard_reset_complete);
6f231dda	375
4393aa4e	376	spin_lock_irqsave(&ihost->scic_lock, flags);
6f231dda DW	377
6f231dda DW	378	#define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
4393aa4e	379	status = scic_port_hard_reset(iport->sci_port_handle,
6f231dda DW	380	ISCI_PORT_RESET_TIMEOUT);
6f231dda DW	381
4393aa4e	382	spin_unlock_irqrestore(&ihost->scic_lock, flags);
6f231dda DW	383
6f231dda DW	384	if (status == SCI_SUCCESS) {
4393aa4e	385	wait_for_completion(&iport->hard_reset_complete);
6f231dda	386
4393aa4e DW	387	dev_dbg(&ihost->pdev->dev,
	388	"%s: iport = %p; hard reset completion\n",
	389	__func__, iport);
6f231dda	390
4393aa4e	391	if (iport->hard_reset_status != SCI_SUCCESS)
6f231dda DW	392	ret = TMF_RESP_FUNC_FAILED;
	393	} else {
	394	ret = TMF_RESP_FUNC_FAILED;
	395
4393aa4e DW	396	dev_err(&ihost->pdev->dev,
4393aa4e DW	397	"%s: iport = %p; scic_port_hard_reset call"
6f231dda	398	" failed 0x%x\n",
4393aa4e	399	__func__, iport, status);
6f231dda DW	400
	401	}
	402
	403	/* If the hard reset for the port has failed, consider this
	404	* the same as link failures on all phys in the port.
	405	*/
	406	if (ret != TMF_RESP_FUNC_COMPLETE) {
4393aa4e DW	407	dev_err(&ihost->pdev->dev,
4393aa4e DW	408	"%s: iport = %p; hard reset failed "
6f231dda	409	"(0x%x) - sending link down to libsas for phy %p\n",
4393aa4e DW	410	__func__, iport, iport->hard_reset_status, iphy);
	411
	412	isci_port_link_down(ihost, iphy, iport);
6f231dda DW	413	}
	414
	415	return ret;
	416	}
09d7da13 DJ	417
	418	/**
	419	* isci_port_invalid_link_up() - This function informs the SCI Core user that
	420	* a phy/link became ready, but the phy is not allowed in the port. In some
	421	* situations the underlying hardware only allows for certain phy to port
	422	* mappings. If these mappings are violated, then this API is invoked.
	423	* @controller: This parameter represents the controller which contains the
	424	* port.
	425	* @port: This parameter specifies the SCI port object for which the callback
	426	* is being invoked.
	427	* @phy: This parameter specifies the phy that came ready, but the phy can't be
	428	* a valid member of the port.
	429	*
	430	*/
	431	void isci_port_invalid_link_up(struct scic_sds_controller *scic,
	432	struct scic_sds_port *sci_port,
	433	struct scic_sds_phy *phy)
	434	{
d3757c3a	435	struct isci_host *ihost = scic->ihost;
09d7da13 DJ	436
	437	dev_warn(&ihost->pdev->dev, "Invalid link up!\n");
	438	}
	439
	440	void isci_port_stop_complete(struct scic_sds_controller *scic,
	441	struct scic_sds_port *sci_port,
	442	enum sci_status completion_status)
	443	{
d3757c3a	444	struct isci_host *ihost = scic->ihost;
09d7da13 DJ	445
	446	dev_dbg(&ihost->pdev->dev, "Port stop complete\n");
	447	}