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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 | ||
f2f30080 | 56 | #include <scsi/sas.h> |
6f231dda | 57 | #include "scic_io_request.h" |
63a3a15f | 58 | #include "registers.h" |
6f231dda | 59 | #include "scic_sds_port.h" |
88f3b62a | 60 | #include "remote_device.h" |
6f231dda DW |
61 | #include "scic_sds_request.h" |
62 | #include "scic_sds_smp_request.h" | |
63 | #include "scic_sds_stp_request.h" | |
63a3a15f | 64 | #include "unsolicited_frame_control.h" |
6f231dda DW |
65 | #include "sci_util.h" |
66 | #include "scu_completion_codes.h" | |
6f231dda | 67 | #include "scu_task_context.h" |
ce2b3261 DW |
68 | #include "request.h" |
69 | #include "task.h" | |
6f231dda | 70 | |
6f231dda DW |
71 | /* |
72 | * **************************************************************************** | |
73 | * * SCIC SDS IO REQUEST CONSTANTS | |
74 | * **************************************************************************** */ | |
75 | ||
76 | /** | |
77 | * | |
78 | * | |
79 | * We have no timer requirements for IO requests right now | |
80 | */ | |
81 | #define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0) | |
82 | #define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0) | |
83 | ||
6f231dda DW |
84 | /** |
85 | * This method returns the sgl element pair for the specificed sgl_pair index. | |
e2023b87 | 86 | * @sci_req: This parameter specifies the IO request for which to retrieve |
6f231dda DW |
87 | * the Scatter-Gather List element pair. |
88 | * @sgl_pair_index: This parameter specifies the index into the SGL element | |
89 | * pair to be retrieved. | |
90 | * | |
91 | * This method returns a pointer to an struct scu_sgl_element_pair. | |
92 | */ | |
93 | static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair( | |
e2023b87 | 94 | struct scic_sds_request *sci_req, |
6f231dda DW |
95 | u32 sgl_pair_index |
96 | ) { | |
97 | struct scu_task_context *task_context; | |
98 | ||
e2023b87 | 99 | task_context = (struct scu_task_context *)sci_req->task_context_buffer; |
6f231dda DW |
100 | |
101 | if (sgl_pair_index == 0) { | |
102 | return &task_context->sgl_pair_ab; | |
103 | } else if (sgl_pair_index == 1) { | |
104 | return &task_context->sgl_pair_cd; | |
105 | } | |
106 | ||
0d84366f | 107 | return &sci_req->sg_table[sgl_pair_index - 2]; |
6f231dda DW |
108 | } |
109 | ||
110 | /** | |
111 | * This function will build the SGL list for an IO request. | |
e2023b87 | 112 | * @sci_req: This parameter specifies the IO request for which to build |
6f231dda DW |
113 | * the Scatter-Gather List. |
114 | * | |
115 | */ | |
6389a775 | 116 | void scic_sds_request_build_sgl(struct scic_sds_request *sds_request) |
6f231dda | 117 | { |
67ea838d | 118 | struct isci_request *isci_request = sci_req_to_ireq(sds_request); |
6389a775 DJ |
119 | struct isci_host *isci_host = isci_request->isci_host; |
120 | struct sas_task *task = isci_request_access_task(isci_request); | |
121 | struct scatterlist *sg = NULL; | |
122 | dma_addr_t dma_addr; | |
123 | u32 sg_idx = 0; | |
124 | struct scu_sgl_element_pair *scu_sg = NULL; | |
125 | struct scu_sgl_element_pair *prev_sg = NULL; | |
126 | ||
127 | if (task->num_scatter > 0) { | |
128 | sg = task->scatter; | |
129 | ||
130 | while (sg) { | |
131 | scu_sg = scic_sds_request_get_sgl_element_pair( | |
132 | sds_request, | |
133 | sg_idx); | |
134 | ||
135 | SCU_SGL_COPY(scu_sg->A, sg); | |
136 | ||
137 | sg = sg_next(sg); | |
138 | ||
139 | if (sg) { | |
140 | SCU_SGL_COPY(scu_sg->B, sg); | |
141 | sg = sg_next(sg); | |
142 | } else | |
143 | SCU_SGL_ZERO(scu_sg->B); | |
144 | ||
145 | if (prev_sg) { | |
146 | dma_addr = | |
147 | scic_io_request_get_dma_addr( | |
148 | sds_request, | |
149 | scu_sg); | |
150 | ||
151 | prev_sg->next_pair_upper = | |
152 | upper_32_bits(dma_addr); | |
153 | prev_sg->next_pair_lower = | |
154 | lower_32_bits(dma_addr); | |
155 | } | |
156 | ||
157 | prev_sg = scu_sg; | |
158 | sg_idx++; | |
6f231dda | 159 | } |
6389a775 DJ |
160 | } else { /* handle when no sg */ |
161 | scu_sg = scic_sds_request_get_sgl_element_pair(sds_request, | |
162 | sg_idx); | |
6f231dda | 163 | |
6389a775 DJ |
164 | dma_addr = dma_map_single(&isci_host->pdev->dev, |
165 | task->scatter, | |
166 | task->total_xfer_len, | |
167 | task->data_dir); | |
6f231dda | 168 | |
6389a775 DJ |
169 | isci_request->zero_scatter_daddr = dma_addr; |
170 | ||
171 | scu_sg->A.length = task->total_xfer_len; | |
172 | scu_sg->A.address_upper = upper_32_bits(dma_addr); | |
173 | scu_sg->A.address_lower = lower_32_bits(dma_addr); | |
6f231dda DW |
174 | } |
175 | ||
6389a775 DJ |
176 | if (scu_sg) { |
177 | scu_sg->next_pair_upper = 0; | |
178 | scu_sg->next_pair_lower = 0; | |
6f231dda DW |
179 | } |
180 | } | |
181 | ||
b7645818 | 182 | static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req) |
6f231dda | 183 | { |
26298264 DW |
184 | if (sci_req->was_tag_assigned_by_user == false) |
185 | sci_req->task_context_buffer = &sci_req->tc; | |
6f231dda DW |
186 | } |
187 | ||
0cfa890e | 188 | static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req) |
6f231dda | 189 | { |
0cfa890e | 190 | struct ssp_cmd_iu *cmd_iu; |
67ea838d | 191 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
0cfa890e | 192 | struct sas_task *task = isci_request_access_task(ireq); |
6f231dda | 193 | |
b7645818 | 194 | cmd_iu = &sci_req->ssp.cmd; |
6f231dda | 195 | |
0cfa890e DJ |
196 | memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8); |
197 | cmd_iu->add_cdb_len = 0; | |
198 | cmd_iu->_r_a = 0; | |
199 | cmd_iu->_r_b = 0; | |
200 | cmd_iu->en_fburst = 0; /* unsupported */ | |
201 | cmd_iu->task_prio = task->ssp_task.task_prio; | |
202 | cmd_iu->task_attr = task->ssp_task.task_attr; | |
203 | cmd_iu->_r_c = 0; | |
6f231dda | 204 | |
51a57cff DJ |
205 | sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb, |
206 | sizeof(task->ssp_task.cdb) / sizeof(u32)); | |
6f231dda DW |
207 | } |
208 | ||
0cfa890e | 209 | static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req) |
6f231dda | 210 | { |
0cfa890e | 211 | struct ssp_task_iu *task_iu; |
67ea838d | 212 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
0cfa890e DJ |
213 | struct sas_task *task = isci_request_access_task(ireq); |
214 | struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); | |
6f231dda | 215 | |
b7645818 | 216 | task_iu = &sci_req->ssp.tmf; |
6f231dda | 217 | |
0cfa890e | 218 | memset(task_iu, 0, sizeof(struct ssp_task_iu)); |
6f231dda | 219 | |
0cfa890e | 220 | memcpy(task_iu->LUN, task->ssp_task.LUN, 8); |
6f231dda | 221 | |
0cfa890e DJ |
222 | task_iu->task_func = isci_tmf->tmf_code; |
223 | task_iu->task_tag = | |
224 | (ireq->ttype == tmf_task) ? | |
225 | isci_tmf->io_tag : | |
226 | SCI_CONTROLLER_INVALID_IO_TAG; | |
6f231dda DW |
227 | } |
228 | ||
6f231dda DW |
229 | /** |
230 | * This method is will fill in the SCU Task Context for any type of SSP request. | |
e2023b87 | 231 | * @sci_req: |
6f231dda DW |
232 | * @task_context: |
233 | * | |
234 | */ | |
235 | static void scu_ssp_reqeust_construct_task_context( | |
6389a775 | 236 | struct scic_sds_request *sds_request, |
6f231dda DW |
237 | struct scu_task_context *task_context) |
238 | { | |
6389a775 DJ |
239 | dma_addr_t dma_addr; |
240 | struct scic_sds_controller *controller; | |
6f231dda DW |
241 | struct scic_sds_remote_device *target_device; |
242 | struct scic_sds_port *target_port; | |
243 | ||
6389a775 DJ |
244 | controller = scic_sds_request_get_controller(sds_request); |
245 | target_device = scic_sds_request_get_device(sds_request); | |
246 | target_port = scic_sds_request_get_port(sds_request); | |
6f231dda DW |
247 | |
248 | /* Fill in the TC with the its required data */ | |
249 | task_context->abort = 0; | |
250 | task_context->priority = 0; | |
251 | task_context->initiator_request = 1; | |
8f304c36 | 252 | task_context->connection_rate = target_device->connection_rate; |
6f231dda | 253 | task_context->protocol_engine_index = |
6389a775 | 254 | scic_sds_controller_get_protocol_engine_group(controller); |
6f231dda DW |
255 | task_context->logical_port_index = |
256 | scic_sds_port_get_index(target_port); | |
257 | task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP; | |
258 | task_context->valid = SCU_TASK_CONTEXT_VALID; | |
259 | task_context->context_type = SCU_TASK_CONTEXT_TYPE; | |
260 | ||
261 | task_context->remote_node_index = | |
6389a775 | 262 | scic_sds_remote_device_get_index(sds_request->target_device); |
6f231dda DW |
263 | task_context->command_code = 0; |
264 | ||
265 | task_context->link_layer_control = 0; | |
266 | task_context->do_not_dma_ssp_good_response = 1; | |
267 | task_context->strict_ordering = 0; | |
268 | task_context->control_frame = 0; | |
269 | task_context->timeout_enable = 0; | |
270 | task_context->block_guard_enable = 0; | |
271 | ||
272 | task_context->address_modifier = 0; | |
273 | ||
e2023b87 | 274 | /* task_context->type.ssp.tag = sci_req->io_tag; */ |
6f231dda DW |
275 | task_context->task_phase = 0x01; |
276 | ||
6389a775 DJ |
277 | if (sds_request->was_tag_assigned_by_user) { |
278 | /* | |
279 | * Build the task context now since we have already read | |
280 | * the data | |
281 | */ | |
282 | sds_request->post_context = | |
283 | (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | | |
284 | (scic_sds_controller_get_protocol_engine_group( | |
285 | controller) << | |
286 | SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | | |
287 | (scic_sds_port_get_index(target_port) << | |
288 | SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) | | |
289 | scic_sds_io_tag_get_index(sds_request->io_tag)); | |
6f231dda | 290 | } else { |
6389a775 DJ |
291 | /* |
292 | * Build the task context now since we have already read | |
293 | * the data | |
294 | * | |
295 | * I/O tag index is not assigned because we have to wait | |
296 | * until we get a TCi | |
297 | */ | |
298 | sds_request->post_context = | |
299 | (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | | |
300 | (scic_sds_controller_get_protocol_engine_group( | |
301 | owning_controller) << | |
302 | SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | | |
303 | (scic_sds_port_get_index(target_port) << | |
304 | SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)); | |
6f231dda DW |
305 | } |
306 | ||
6389a775 DJ |
307 | /* |
308 | * Copy the physical address for the command buffer to the | |
309 | * SCU Task Context | |
310 | */ | |
311 | dma_addr = scic_io_request_get_dma_addr(sds_request, | |
b7645818 | 312 | &sds_request->ssp.cmd); |
6389a775 DJ |
313 | |
314 | task_context->command_iu_upper = upper_32_bits(dma_addr); | |
315 | task_context->command_iu_lower = lower_32_bits(dma_addr); | |
316 | ||
317 | /* | |
318 | * Copy the physical address for the response buffer to the | |
319 | * SCU Task Context | |
320 | */ | |
321 | dma_addr = scic_io_request_get_dma_addr(sds_request, | |
b7645818 | 322 | &sds_request->ssp.rsp); |
6389a775 DJ |
323 | |
324 | task_context->response_iu_upper = upper_32_bits(dma_addr); | |
325 | task_context->response_iu_lower = lower_32_bits(dma_addr); | |
6f231dda DW |
326 | } |
327 | ||
328 | /** | |
329 | * This method is will fill in the SCU Task Context for a SSP IO request. | |
e2023b87 | 330 | * @sci_req: |
6f231dda DW |
331 | * |
332 | */ | |
333 | static void scu_ssp_io_request_construct_task_context( | |
82d29928 DW |
334 | struct scic_sds_request *sci_req, |
335 | enum dma_data_direction dir, | |
336 | u32 len) | |
6f231dda DW |
337 | { |
338 | struct scu_task_context *task_context; | |
339 | ||
82d29928 | 340 | task_context = scic_sds_request_get_task_context(sci_req); |
6f231dda | 341 | |
82d29928 | 342 | scu_ssp_reqeust_construct_task_context(sci_req, task_context); |
6f231dda | 343 | |
0cfa890e DJ |
344 | task_context->ssp_command_iu_length = |
345 | sizeof(struct ssp_cmd_iu) / sizeof(u32); | |
8694e792 | 346 | task_context->type.ssp.frame_type = SSP_COMMAND; |
6f231dda | 347 | |
82d29928 DW |
348 | switch (dir) { |
349 | case DMA_FROM_DEVICE: | |
350 | case DMA_NONE: | |
351 | default: | |
6f231dda DW |
352 | task_context->task_type = SCU_TASK_TYPE_IOREAD; |
353 | break; | |
82d29928 | 354 | case DMA_TO_DEVICE: |
6f231dda DW |
355 | task_context->task_type = SCU_TASK_TYPE_IOWRITE; |
356 | break; | |
357 | } | |
358 | ||
82d29928 | 359 | task_context->transfer_length_bytes = len; |
6f231dda | 360 | |
82d29928 DW |
361 | if (task_context->transfer_length_bytes > 0) |
362 | scic_sds_request_build_sgl(sci_req); | |
6f231dda DW |
363 | } |
364 | ||
b7645818 | 365 | static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req) |
6f231dda | 366 | { |
26298264 DW |
367 | if (sci_req->was_tag_assigned_by_user == false) |
368 | sci_req->task_context_buffer = &sci_req->tc; | |
6f231dda DW |
369 | } |
370 | ||
371 | /** | |
372 | * This method will fill in the SCU Task Context for a SSP Task request. The | |
373 | * following important settings are utilized: -# priority == | |
374 | * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued | |
375 | * ahead of other task destined for the same Remote Node. -# task_type == | |
376 | * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type | |
377 | * (i.e. non-raw frame) is being utilized to perform task management. -# | |
378 | * control_frame == 1. This ensures that the proper endianess is set so | |
379 | * that the bytes are transmitted in the right order for a task frame. | |
e2023b87 | 380 | * @sci_req: This parameter specifies the task request object being |
6f231dda DW |
381 | * constructed. |
382 | * | |
383 | */ | |
384 | static void scu_ssp_task_request_construct_task_context( | |
e2023b87 | 385 | struct scic_sds_request *sci_req) |
6f231dda DW |
386 | { |
387 | struct scu_task_context *task_context; | |
388 | ||
e2023b87 | 389 | task_context = scic_sds_request_get_task_context(sci_req); |
6f231dda | 390 | |
e2023b87 | 391 | scu_ssp_reqeust_construct_task_context(sci_req, task_context); |
6f231dda DW |
392 | |
393 | task_context->control_frame = 1; | |
394 | task_context->priority = SCU_TASK_PRIORITY_HIGH; | |
395 | task_context->task_type = SCU_TASK_TYPE_RAW_FRAME; | |
396 | task_context->transfer_length_bytes = 0; | |
8694e792 | 397 | task_context->type.ssp.frame_type = SSP_TASK; |
0cfa890e DJ |
398 | task_context->ssp_command_iu_length = |
399 | sizeof(struct ssp_task_iu) / sizeof(u32); | |
6f231dda DW |
400 | } |
401 | ||
402 | ||
403 | /** | |
404 | * This method constructs the SSP Command IU data for this ssp passthrough | |
405 | * comand request object. | |
e2023b87 | 406 | * @sci_req: This parameter specifies the request object for which the SSP |
6f231dda DW |
407 | * command information unit is being built. |
408 | * | |
409 | * enum sci_status, returns invalid parameter is cdb > 16 | |
410 | */ | |
411 | ||
412 | ||
413 | /** | |
414 | * This method constructs the SATA request object. | |
e2023b87 | 415 | * @sci_req: |
6f231dda DW |
416 | * @sat_protocol: |
417 | * @transfer_length: | |
418 | * @data_direction: | |
419 | * @copy_rx_frame: | |
420 | * | |
421 | * enum sci_status | |
422 | */ | |
e76d6180 DJ |
423 | static enum sci_status |
424 | scic_io_request_construct_sata(struct scic_sds_request *sci_req, | |
425 | u32 len, | |
426 | enum dma_data_direction dir, | |
427 | bool copy) | |
6f231dda DW |
428 | { |
429 | enum sci_status status = SCI_SUCCESS; | |
67ea838d | 430 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
e76d6180 DJ |
431 | struct sas_task *task = isci_request_access_task(ireq); |
432 | ||
433 | /* check for management protocols */ | |
434 | if (ireq->ttype == tmf_task) { | |
435 | struct isci_tmf *tmf = isci_request_access_tmf(ireq); | |
436 | ||
437 | if (tmf->tmf_code == isci_tmf_sata_srst_high || | |
438 | tmf->tmf_code == isci_tmf_sata_srst_low) | |
439 | return scic_sds_stp_soft_reset_request_construct(sci_req); | |
440 | else { | |
441 | dev_err(scic_to_dev(sci_req->owning_controller), | |
442 | "%s: Request 0x%p received un-handled SAT " | |
443 | "management protocol 0x%x.\n", | |
444 | __func__, sci_req, tmf->tmf_code); | |
445 | ||
446 | return SCI_FAILURE; | |
447 | } | |
448 | } | |
6f231dda | 449 | |
e76d6180 DJ |
450 | if (!sas_protocol_ata(task->task_proto)) { |
451 | dev_err(scic_to_dev(sci_req->owning_controller), | |
452 | "%s: Non-ATA protocol in SATA path: 0x%x\n", | |
453 | __func__, | |
454 | task->task_proto); | |
455 | return SCI_FAILURE; | |
6f231dda | 456 | |
e76d6180 | 457 | } |
6f231dda | 458 | |
e76d6180 DJ |
459 | /* non data */ |
460 | if (task->data_dir == DMA_NONE) | |
461 | return scic_sds_stp_non_data_request_construct(sci_req); | |
6f231dda | 462 | |
e76d6180 DJ |
463 | /* NCQ */ |
464 | if (task->ata_task.use_ncq) | |
465 | return scic_sds_stp_ncq_request_construct(sci_req, len, dir); | |
6f231dda | 466 | |
e76d6180 DJ |
467 | /* DMA */ |
468 | if (task->ata_task.dma_xfer) | |
469 | return scic_sds_stp_udma_request_construct(sci_req, len, dir); | |
470 | else /* PIO */ | |
471 | return scic_sds_stp_pio_request_construct(sci_req, copy); | |
6f231dda DW |
472 | |
473 | return status; | |
474 | } | |
475 | ||
6f231dda DW |
476 | enum sci_status scic_io_request_construct_basic_ssp( |
477 | struct scic_sds_request *sci_req) | |
478 | { | |
67ea838d | 479 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
9286a195 | 480 | struct sas_task *task = isci_request_access_task(ireq); |
6f231dda DW |
481 | |
482 | sci_req->protocol = SCIC_SSP_PROTOCOL; | |
483 | ||
9286a195 DJ |
484 | scu_ssp_io_request_construct_task_context(sci_req, |
485 | task->data_dir, | |
486 | task->total_xfer_len); | |
6f231dda DW |
487 | |
488 | scic_sds_io_request_build_ssp_command_iu(sci_req); | |
489 | ||
9286a195 DJ |
490 | sci_base_state_machine_change_state( |
491 | &sci_req->state_machine, | |
492 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
493 | |
494 | return SCI_SUCCESS; | |
495 | } | |
496 | ||
497 | ||
498 | enum sci_status scic_task_request_construct_ssp( | |
499 | struct scic_sds_request *sci_req) | |
500 | { | |
501 | /* Construct the SSP Task SCU Task Context */ | |
502 | scu_ssp_task_request_construct_task_context(sci_req); | |
503 | ||
504 | /* Fill in the SSP Task IU */ | |
505 | scic_sds_task_request_build_ssp_task_iu(sci_req); | |
506 | ||
38aa74eb CH |
507 | sci_base_state_machine_change_state(&sci_req->state_machine, |
508 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
509 | |
510 | return SCI_SUCCESS; | |
511 | } | |
512 | ||
513 | ||
7392d275 DJ |
514 | enum sci_status scic_io_request_construct_basic_sata( |
515 | struct scic_sds_request *sci_req) | |
6f231dda DW |
516 | { |
517 | enum sci_status status; | |
82d29928 | 518 | struct scic_sds_stp_request *stp_req; |
82d29928 | 519 | bool copy = false; |
67ea838d | 520 | struct isci_request *isci_request = sci_req_to_ireq(sci_req); |
7392d275 | 521 | struct sas_task *task = isci_request_access_task(isci_request); |
6f231dda | 522 | |
827a84d4 | 523 | stp_req = &sci_req->stp.req; |
6f231dda DW |
524 | sci_req->protocol = SCIC_STP_PROTOCOL; |
525 | ||
7392d275 | 526 | copy = (task->data_dir == DMA_NONE) ? false : true; |
6f231dda | 527 | |
9286a195 DJ |
528 | status = scic_io_request_construct_sata(sci_req, |
529 | task->total_xfer_len, | |
530 | task->data_dir, | |
531 | copy); | |
6f231dda DW |
532 | |
533 | if (status == SCI_SUCCESS) | |
38aa74eb CH |
534 | sci_base_state_machine_change_state(&sci_req->state_machine, |
535 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
536 | |
537 | return status; | |
538 | } | |
539 | ||
540 | ||
67ea838d | 541 | enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req) |
6f231dda | 542 | { |
e76d6180 | 543 | enum sci_status status = SCI_SUCCESS; |
67ea838d | 544 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
e76d6180 DJ |
545 | |
546 | /* check for management protocols */ | |
547 | if (ireq->ttype == tmf_task) { | |
548 | struct isci_tmf *tmf = isci_request_access_tmf(ireq); | |
549 | ||
550 | if (tmf->tmf_code == isci_tmf_sata_srst_high || | |
551 | tmf->tmf_code == isci_tmf_sata_srst_low) { | |
552 | status = scic_sds_stp_soft_reset_request_construct(sci_req); | |
553 | } else { | |
554 | dev_err(scic_to_dev(sci_req->owning_controller), | |
555 | "%s: Request 0x%p received un-handled SAT " | |
556 | "Protocol 0x%x.\n", | |
557 | __func__, sci_req, tmf->tmf_code); | |
558 | ||
559 | return SCI_FAILURE; | |
560 | } | |
6f231dda DW |
561 | } |
562 | ||
563 | if (status == SCI_SUCCESS) | |
e76d6180 DJ |
564 | sci_base_state_machine_change_state( |
565 | &sci_req->state_machine, | |
566 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
567 | |
568 | return status; | |
569 | } | |
570 | ||
571 | ||
572 | u16 scic_io_request_get_io_tag( | |
573 | struct scic_sds_request *sci_req) | |
574 | { | |
575 | return sci_req->io_tag; | |
576 | } | |
577 | ||
578 | ||
579 | u32 scic_request_get_controller_status( | |
580 | struct scic_sds_request *sci_req) | |
581 | { | |
582 | return sci_req->scu_status; | |
583 | } | |
584 | ||
6f231dda DW |
585 | #define SCU_TASK_CONTEXT_SRAM 0x200000 |
586 | u32 scic_io_request_get_number_of_bytes_transferred( | |
587 | struct scic_sds_request *scic_sds_request) | |
588 | { | |
467e855a | 589 | struct scic_sds_controller *scic = scic_sds_request->owning_controller; |
6f231dda DW |
590 | u32 ret_val = 0; |
591 | ||
467e855a BB |
592 | if (readl(&scic->smu_registers->address_modifier) == 0) { |
593 | void __iomem *scu_reg_base = scic->scu_registers; | |
6f231dda DW |
594 | /* |
595 | * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where | |
596 | * BAR1 is the scu_registers | |
597 | * 0x20002C = 0x200000 + 0x2c | |
598 | * = start of task context SRAM + offset of (type.ssp.data_offset) | |
599 | * TCi is the io_tag of struct scic_sds_request */ | |
467e855a BB |
600 | ret_val = readl(scu_reg_base + |
601 | (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) + | |
602 | ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag))); | |
6f231dda DW |
603 | } |
604 | ||
605 | return ret_val; | |
606 | } | |
607 | ||
608 | ||
609 | /* | |
610 | * **************************************************************************** | |
611 | * * SCIC SDS Interface Implementation | |
612 | * **************************************************************************** */ | |
613 | ||
38aa74eb CH |
614 | enum sci_status |
615 | scic_sds_request_start(struct scic_sds_request *request) | |
6f231dda | 616 | { |
524b5f72 | 617 | if (request->device_sequence != |
38aa74eb | 618 | scic_sds_remote_device_get_sequence(request->target_device)) |
524b5f72 CH |
619 | return SCI_FAILURE; |
620 | ||
621 | if (request->state_handlers->start_handler) | |
38aa74eb | 622 | return request->state_handlers->start_handler(request); |
524b5f72 CH |
623 | |
624 | dev_warn(scic_to_dev(request->owning_controller), | |
625 | "%s: SCIC IO Request requested to start while in wrong " | |
626 | "state %d\n", | |
627 | __func__, | |
628 | sci_base_state_machine_get_state(&request->state_machine)); | |
629 | ||
630 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
631 | } |
632 | ||
38aa74eb CH |
633 | enum sci_status |
634 | scic_sds_io_request_terminate(struct scic_sds_request *request) | |
6f231dda | 635 | { |
524b5f72 CH |
636 | if (request->state_handlers->abort_handler) |
637 | return request->state_handlers->abort_handler(request); | |
638 | ||
639 | dev_warn(scic_to_dev(request->owning_controller), | |
640 | "%s: SCIC IO Request requested to abort while in wrong " | |
641 | "state %d\n", | |
642 | __func__, | |
643 | sci_base_state_machine_get_state(&request->state_machine)); | |
644 | ||
645 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
646 | } |
647 | ||
38aa74eb CH |
648 | enum sci_status |
649 | scic_sds_io_request_complete(struct scic_sds_request *request) | |
6f231dda | 650 | { |
524b5f72 CH |
651 | if (request->state_handlers->complete_handler) |
652 | return request->state_handlers->complete_handler(request); | |
653 | ||
654 | dev_warn(scic_to_dev(request->owning_controller), | |
655 | "%s: SCIC IO Request requested to complete while in wrong " | |
656 | "state %d\n", | |
657 | __func__, | |
658 | sci_base_state_machine_get_state(&request->state_machine)); | |
659 | ||
660 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
661 | } |
662 | ||
6f231dda | 663 | enum sci_status scic_sds_io_request_event_handler( |
524b5f72 | 664 | struct scic_sds_request *request, |
6f231dda DW |
665 | u32 event_code) |
666 | { | |
524b5f72 CH |
667 | if (request->state_handlers->event_handler) |
668 | return request->state_handlers->event_handler(request, event_code); | |
669 | ||
670 | dev_warn(scic_to_dev(request->owning_controller), | |
671 | "%s: SCIC IO Request given event code notification %x while " | |
672 | "in wrong state %d\n", | |
673 | __func__, | |
674 | event_code, | |
675 | sci_base_state_machine_get_state(&request->state_machine)); | |
676 | ||
677 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
678 | } |
679 | ||
524b5f72 CH |
680 | enum sci_status |
681 | scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code) | |
682 | { | |
683 | if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED && | |
684 | request->has_started_substate_machine == false) | |
685 | return scic_sds_request_started_state_tc_completion_handler(request, completion_code); | |
686 | else if (request->state_handlers->tc_completion_handler) | |
687 | return request->state_handlers->tc_completion_handler(request, completion_code); | |
688 | ||
689 | dev_warn(scic_to_dev(request->owning_controller), | |
690 | "%s: SCIC IO Request given task completion notification %x " | |
691 | "while in wrong state %d\n", | |
692 | __func__, | |
693 | completion_code, | |
694 | sci_base_state_machine_get_state(&request->state_machine)); | |
695 | ||
696 | return SCI_FAILURE_INVALID_STATE; | |
697 | ||
698 | } | |
699 | ||
700 | ||
6f231dda DW |
701 | /** |
702 | * | |
e2023b87 | 703 | * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start |
6f231dda DW |
704 | * operation is to be executed. |
705 | * @frame_index: The frame index returned by the hardware for the reqeust | |
706 | * object. | |
707 | * | |
708 | * This method invokes the core state frame handler for the | |
709 | * SCIC_SDS_IO_REQUEST_T object. enum sci_status | |
710 | */ | |
711 | enum sci_status scic_sds_io_request_frame_handler( | |
524b5f72 | 712 | struct scic_sds_request *request, |
6f231dda DW |
713 | u32 frame_index) |
714 | { | |
524b5f72 CH |
715 | if (request->state_handlers->frame_handler) |
716 | return request->state_handlers->frame_handler(request, frame_index); | |
717 | ||
718 | dev_warn(scic_to_dev(request->owning_controller), | |
719 | "%s: SCIC IO Request given unexpected frame %x while in " | |
720 | "state %d\n", | |
721 | __func__, | |
722 | frame_index, | |
723 | sci_base_state_machine_get_state(&request->state_machine)); | |
724 | ||
725 | scic_sds_controller_release_frame(request->owning_controller, frame_index); | |
726 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
727 | } |
728 | ||
6f231dda | 729 | /* |
af5ae893 | 730 | * This function copies response data for requests returning response data |
6f231dda | 731 | * instead of sense data. |
e2023b87 | 732 | * @sci_req: This parameter specifies the request object for which to copy |
6f231dda | 733 | * the response data. |
6f231dda | 734 | */ |
af5ae893 | 735 | void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req) |
6f231dda | 736 | { |
af5ae893 DJ |
737 | void *resp_buf; |
738 | u32 len; | |
739 | struct ssp_response_iu *ssp_response; | |
67ea838d | 740 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
af5ae893 | 741 | struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); |
6f231dda | 742 | |
b7645818 | 743 | ssp_response = &sci_req->ssp.rsp; |
6f231dda | 744 | |
af5ae893 | 745 | resp_buf = &isci_tmf->resp.resp_iu; |
6f231dda | 746 | |
af5ae893 DJ |
747 | len = min_t(u32, |
748 | SSP_RESP_IU_MAX_SIZE, | |
749 | be32_to_cpu(ssp_response->response_data_len)); | |
6f231dda | 750 | |
af5ae893 | 751 | memcpy(resp_buf, ssp_response->resp_data, len); |
6f231dda DW |
752 | } |
753 | ||
6f231dda DW |
754 | /* |
755 | * ***************************************************************************** | |
756 | * * CONSTRUCTED STATE HANDLERS | |
757 | * ***************************************************************************** */ | |
758 | ||
38aa74eb | 759 | /* |
6f231dda DW |
760 | * This method implements the action taken when a constructed |
761 | * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request. | |
762 | * This method will, if necessary, allocate a TCi for the io request object and | |
763 | * then will, if necessary, copy the constructed TC data into the actual TC | |
764 | * buffer. If everything is successful the post context field is updated with | |
765 | * the TCi so the controller can post the request to the hardware. enum sci_status | |
766 | * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES | |
767 | */ | |
768 | static enum sci_status scic_sds_request_constructed_state_start_handler( | |
38aa74eb | 769 | struct scic_sds_request *request) |
6f231dda DW |
770 | { |
771 | struct scu_task_context *task_context; | |
6f231dda | 772 | |
38aa74eb CH |
773 | if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { |
774 | request->io_tag = | |
775 | scic_controller_allocate_io_tag(request->owning_controller); | |
6f231dda DW |
776 | } |
777 | ||
778 | /* Record the IO Tag in the request */ | |
38aa74eb CH |
779 | if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) { |
780 | task_context = request->task_context_buffer; | |
6f231dda | 781 | |
38aa74eb | 782 | task_context->task_index = scic_sds_io_tag_get_index(request->io_tag); |
6f231dda DW |
783 | |
784 | switch (task_context->protocol_type) { | |
785 | case SCU_TASK_CONTEXT_PROTOCOL_SMP: | |
786 | case SCU_TASK_CONTEXT_PROTOCOL_SSP: | |
787 | /* SSP/SMP Frame */ | |
38aa74eb | 788 | task_context->type.ssp.tag = request->io_tag; |
6f231dda DW |
789 | task_context->type.ssp.target_port_transfer_tag = 0xFFFF; |
790 | break; | |
791 | ||
792 | case SCU_TASK_CONTEXT_PROTOCOL_STP: | |
793 | /* | |
794 | * STP/SATA Frame | |
38aa74eb | 795 | * task_context->type.stp.ncq_tag = request->ncq_tag; */ |
6f231dda DW |
796 | break; |
797 | ||
798 | case SCU_TASK_CONTEXT_PROTOCOL_NONE: | |
799 | /* / @todo When do we set no protocol type? */ | |
800 | break; | |
801 | ||
802 | default: | |
803 | /* This should never happen since we build the IO requests */ | |
804 | break; | |
805 | } | |
806 | ||
807 | /* | |
808 | * Check to see if we need to copy the task context buffer | |
809 | * or have been building into the task context buffer */ | |
38aa74eb | 810 | if (request->was_tag_assigned_by_user == false) { |
6f231dda | 811 | scic_sds_controller_copy_task_context( |
38aa74eb | 812 | request->owning_controller, request); |
6f231dda DW |
813 | } |
814 | ||
815 | /* Add to the post_context the io tag value */ | |
38aa74eb | 816 | request->post_context |= scic_sds_io_tag_get_index(request->io_tag); |
6f231dda DW |
817 | |
818 | /* Everything is good go ahead and change state */ | |
38aa74eb CH |
819 | sci_base_state_machine_change_state(&request->state_machine, |
820 | SCI_BASE_REQUEST_STATE_STARTED); | |
6f231dda DW |
821 | |
822 | return SCI_SUCCESS; | |
823 | } | |
824 | ||
825 | return SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
826 | } | |
827 | ||
38aa74eb | 828 | /* |
6f231dda DW |
829 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
830 | * object receives a scic_sds_request_terminate() request. Since the request | |
831 | * has not yet been posted to the hardware the request transitions to the | |
832 | * completed state. enum sci_status SCI_SUCCESS | |
833 | */ | |
834 | static enum sci_status scic_sds_request_constructed_state_abort_handler( | |
38aa74eb | 835 | struct scic_sds_request *request) |
6f231dda | 836 | { |
6f231dda DW |
837 | /* |
838 | * This request has been terminated by the user make sure that the correct | |
839 | * status code is returned */ | |
38aa74eb | 840 | scic_sds_request_set_status(request, |
6f231dda | 841 | SCU_TASK_DONE_TASK_ABORT, |
38aa74eb | 842 | SCI_FAILURE_IO_TERMINATED); |
6f231dda | 843 | |
38aa74eb CH |
844 | sci_base_state_machine_change_state(&request->state_machine, |
845 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
846 | return SCI_SUCCESS; |
847 | } | |
848 | ||
849 | /* | |
850 | * ***************************************************************************** | |
851 | * * STARTED STATE HANDLERS | |
852 | * ***************************************************************************** */ | |
853 | ||
38aa74eb | 854 | /* |
6f231dda DW |
855 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
856 | * object receives a scic_sds_request_terminate() request. Since the request | |
857 | * has been posted to the hardware the io request state is changed to the | |
858 | * aborting state. enum sci_status SCI_SUCCESS | |
859 | */ | |
860 | enum sci_status scic_sds_request_started_state_abort_handler( | |
38aa74eb | 861 | struct scic_sds_request *request) |
6f231dda | 862 | { |
38aa74eb CH |
863 | if (request->has_started_substate_machine) |
864 | sci_base_state_machine_stop(&request->started_substate_machine); | |
6f231dda | 865 | |
38aa74eb CH |
866 | sci_base_state_machine_change_state(&request->state_machine, |
867 | SCI_BASE_REQUEST_STATE_ABORTING); | |
6f231dda DW |
868 | return SCI_SUCCESS; |
869 | } | |
870 | ||
af5ae893 | 871 | /* |
6f231dda DW |
872 | * scic_sds_request_started_state_tc_completion_handler() - This method process |
873 | * TC (task context) completions for normal IO request (i.e. Task/Abort | |
874 | * Completions of type 0). This method will update the | |
875 | * SCIC_SDS_IO_REQUEST_T::status field. | |
e2023b87 | 876 | * @sci_req: This parameter specifies the request for which a completion |
6f231dda DW |
877 | * occurred. |
878 | * @completion_code: This parameter specifies the completion code received from | |
879 | * the SCU. | |
880 | * | |
881 | */ | |
af5ae893 DJ |
882 | enum sci_status |
883 | scic_sds_request_started_state_tc_completion_handler( | |
884 | struct scic_sds_request *sci_req, | |
885 | u32 completion_code) | |
6f231dda | 886 | { |
af5ae893 DJ |
887 | u8 datapres; |
888 | struct ssp_response_iu *resp_iu; | |
6f231dda | 889 | |
af5ae893 DJ |
890 | /* |
891 | * TODO: Any SDMA return code of other than 0 is bad | |
6f231dda DW |
892 | * decode 0x003C0000 to determine SDMA status |
893 | */ | |
894 | switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { | |
895 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): | |
af5ae893 DJ |
896 | scic_sds_request_set_status(sci_req, |
897 | SCU_TASK_DONE_GOOD, | |
898 | SCI_SUCCESS); | |
6f231dda DW |
899 | break; |
900 | ||
901 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP): | |
902 | { | |
903 | /* | |
af5ae893 DJ |
904 | * There are times when the SCU hardware will return an early |
905 | * response because the io request specified more data than is | |
906 | * returned by the target device (mode pages, inquiry data, | |
907 | * etc.). We must check the response stats to see if this is | |
908 | * truly a failed request or a good request that just got | |
909 | * completed early. | |
910 | */ | |
b7645818 | 911 | struct ssp_response_iu *resp = &sci_req->ssp.rsp; |
51a57cff DJ |
912 | ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); |
913 | ||
b7645818 DW |
914 | sci_swab32_cpy(&sci_req->ssp.rsp, |
915 | &sci_req->ssp.rsp, | |
51a57cff | 916 | word_cnt); |
6f231dda | 917 | |
af5ae893 | 918 | if (resp->status == 0) { |
6f231dda | 919 | scic_sds_request_set_status( |
af5ae893 DJ |
920 | sci_req, |
921 | SCU_TASK_DONE_GOOD, | |
922 | SCI_SUCCESS_IO_DONE_EARLY); | |
6f231dda DW |
923 | } else { |
924 | scic_sds_request_set_status( | |
e2023b87 | 925 | sci_req, |
6f231dda | 926 | SCU_TASK_DONE_CHECK_RESPONSE, |
af5ae893 | 927 | SCI_FAILURE_IO_RESPONSE_VALID); |
6f231dda DW |
928 | } |
929 | } | |
930 | break; | |
931 | ||
932 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE): | |
51a57cff DJ |
933 | { |
934 | ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); | |
6f231dda | 935 | |
b7645818 DW |
936 | sci_swab32_cpy(&sci_req->ssp.rsp, |
937 | &sci_req->ssp.rsp, | |
51a57cff DJ |
938 | word_cnt); |
939 | ||
940 | scic_sds_request_set_status(sci_req, | |
941 | SCU_TASK_DONE_CHECK_RESPONSE, | |
942 | SCI_FAILURE_IO_RESPONSE_VALID); | |
6f231dda | 943 | break; |
51a57cff | 944 | } |
6f231dda DW |
945 | |
946 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR): | |
947 | /* | |
af5ae893 DJ |
948 | * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame |
949 | * guaranteed to be received before this completion status is | |
950 | * posted? | |
951 | */ | |
b7645818 | 952 | resp_iu = &sci_req->ssp.rsp; |
af5ae893 DJ |
953 | datapres = resp_iu->datapres; |
954 | ||
955 | if ((datapres == 0x01) || (datapres == 0x02)) { | |
6f231dda | 956 | scic_sds_request_set_status( |
e2023b87 | 957 | sci_req, |
6f231dda | 958 | SCU_TASK_DONE_CHECK_RESPONSE, |
af5ae893 DJ |
959 | SCI_FAILURE_IO_RESPONSE_VALID); |
960 | } else | |
6f231dda | 961 | scic_sds_request_set_status( |
af5ae893 | 962 | sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); |
6f231dda DW |
963 | break; |
964 | ||
965 | /* only stp device gets suspended. */ | |
966 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO): | |
967 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR): | |
968 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR): | |
969 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR): | |
970 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR): | |
971 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN): | |
972 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR): | |
973 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP): | |
974 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS): | |
975 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR): | |
976 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR): | |
e2023b87 | 977 | if (sci_req->protocol == SCIC_STP_PROTOCOL) { |
6f231dda | 978 | scic_sds_request_set_status( |
e2023b87 | 979 | sci_req, |
af5ae893 DJ |
980 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
981 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
982 | SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); | |
6f231dda DW |
983 | } else { |
984 | scic_sds_request_set_status( | |
e2023b87 | 985 | sci_req, |
af5ae893 DJ |
986 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
987 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
988 | SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); | |
6f231dda DW |
989 | } |
990 | break; | |
991 | ||
992 | /* both stp/ssp device gets suspended */ | |
993 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR): | |
994 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION): | |
995 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1): | |
996 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2): | |
997 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3): | |
998 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION): | |
999 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION): | |
1000 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY): | |
1001 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED): | |
1002 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED): | |
1003 | scic_sds_request_set_status( | |
e2023b87 | 1004 | sci_req, |
af5ae893 DJ |
1005 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
1006 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
1007 | SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); | |
6f231dda DW |
1008 | break; |
1009 | ||
1010 | /* neither ssp nor stp gets suspended. */ | |
1011 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR): | |
1012 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR): | |
1013 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR): | |
1014 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR): | |
1015 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR): | |
1016 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA): | |
1017 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR): | |
1018 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR): | |
1019 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR): | |
1020 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR): | |
1021 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA): | |
1022 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL): | |
1023 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV): | |
1024 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV): | |
1025 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND): | |
1026 | default: | |
1027 | scic_sds_request_set_status( | |
e2023b87 | 1028 | sci_req, |
af5ae893 DJ |
1029 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
1030 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
1031 | SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); | |
6f231dda DW |
1032 | break; |
1033 | } | |
1034 | ||
af5ae893 DJ |
1035 | /* |
1036 | * TODO: This is probably wrong for ACK/NAK timeout conditions | |
6f231dda DW |
1037 | */ |
1038 | ||
af5ae893 DJ |
1039 | /* In all cases we will treat this as the completion of the IO req. */ |
1040 | sci_base_state_machine_change_state( | |
1041 | &sci_req->state_machine, | |
1042 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1043 | return SCI_SUCCESS; |
1044 | } | |
1045 | ||
38aa74eb | 1046 | /* |
6f231dda DW |
1047 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1048 | * object receives a scic_sds_request_frame_handler() request. This method | |
1049 | * first determines the frame type received. If this is a response frame then | |
1050 | * the response data is copied to the io request response buffer for processing | |
1051 | * at completion time. If the frame type is not a response buffer an error is | |
1052 | * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE | |
1053 | */ | |
af5ae893 DJ |
1054 | static enum sci_status |
1055 | scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req, | |
1056 | u32 frame_index) | |
6f231dda DW |
1057 | { |
1058 | enum sci_status status; | |
2d9c2240 DJ |
1059 | u32 *frame_header; |
1060 | struct ssp_frame_hdr ssp_hdr; | |
1061 | ssize_t word_cnt; | |
6f231dda | 1062 | |
6f231dda | 1063 | status = scic_sds_unsolicited_frame_control_get_header( |
e2023b87 | 1064 | &(scic_sds_request_get_controller(sci_req)->uf_control), |
6f231dda | 1065 | frame_index, |
af5ae893 | 1066 | (void **)&frame_header); |
6f231dda | 1067 | |
2d9c2240 DJ |
1068 | word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32); |
1069 | sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt); | |
1070 | ||
1071 | if (ssp_hdr.frame_type == SSP_RESPONSE) { | |
af5ae893 | 1072 | struct ssp_response_iu *resp_iu; |
51a57cff | 1073 | ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); |
6f231dda DW |
1074 | |
1075 | status = scic_sds_unsolicited_frame_control_get_buffer( | |
e2023b87 | 1076 | &(scic_sds_request_get_controller(sci_req)->uf_control), |
6f231dda | 1077 | frame_index, |
af5ae893 | 1078 | (void **)&resp_iu); |
6f231dda | 1079 | |
b7645818 | 1080 | sci_swab32_cpy(&sci_req->ssp.rsp, |
51a57cff | 1081 | resp_iu, word_cnt); |
6f231dda | 1082 | |
b7645818 | 1083 | resp_iu = &sci_req->ssp.rsp; |
6f231dda | 1084 | |
af5ae893 DJ |
1085 | if ((resp_iu->datapres == 0x01) || |
1086 | (resp_iu->datapres == 0x02)) { | |
6f231dda | 1087 | scic_sds_request_set_status( |
e2023b87 | 1088 | sci_req, |
6f231dda | 1089 | SCU_TASK_DONE_CHECK_RESPONSE, |
af5ae893 | 1090 | SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); |
6f231dda DW |
1091 | } else |
1092 | scic_sds_request_set_status( | |
af5ae893 DJ |
1093 | sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); |
1094 | } else { | |
6f231dda | 1095 | /* This was not a response frame why did it get forwarded? */ |
e2023b87 | 1096 | dev_err(scic_to_dev(sci_req->owning_controller), |
6f231dda DW |
1097 | "%s: SCIC IO Request 0x%p received unexpected " |
1098 | "frame %d type 0x%02x\n", | |
1099 | __func__, | |
e2023b87 | 1100 | sci_req, |
6f231dda | 1101 | frame_index, |
2d9c2240 | 1102 | ssp_hdr.frame_type); |
af5ae893 | 1103 | } |
6f231dda DW |
1104 | |
1105 | /* | |
1106 | * In any case we are done with this frame buffer return it to the | |
af5ae893 DJ |
1107 | * controller |
1108 | */ | |
6f231dda | 1109 | scic_sds_controller_release_frame( |
af5ae893 | 1110 | sci_req->owning_controller, frame_index); |
6f231dda DW |
1111 | |
1112 | return SCI_SUCCESS; | |
1113 | } | |
1114 | ||
1115 | /* | |
1116 | * ***************************************************************************** | |
1117 | * * COMPLETED STATE HANDLERS | |
1118 | * ***************************************************************************** */ | |
1119 | ||
1120 | ||
38aa74eb | 1121 | /* |
6f231dda DW |
1122 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1123 | * object receives a scic_sds_request_complete() request. This method frees up | |
1124 | * any io request resources that have been allocated and transitions the | |
1125 | * request to its final state. Consider stopping the state machine instead of | |
1126 | * transitioning to the final state? enum sci_status SCI_SUCCESS | |
1127 | */ | |
1128 | static enum sci_status scic_sds_request_completed_state_complete_handler( | |
38aa74eb | 1129 | struct scic_sds_request *request) |
6f231dda | 1130 | { |
38aa74eb | 1131 | if (request->was_tag_assigned_by_user != true) { |
6f231dda | 1132 | scic_controller_free_io_tag( |
38aa74eb | 1133 | request->owning_controller, request->io_tag); |
6f231dda DW |
1134 | } |
1135 | ||
38aa74eb | 1136 | if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) { |
6f231dda | 1137 | scic_sds_controller_release_frame( |
38aa74eb | 1138 | request->owning_controller, request->saved_rx_frame_index); |
6f231dda DW |
1139 | } |
1140 | ||
38aa74eb CH |
1141 | sci_base_state_machine_change_state(&request->state_machine, |
1142 | SCI_BASE_REQUEST_STATE_FINAL); | |
6f231dda DW |
1143 | return SCI_SUCCESS; |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * ***************************************************************************** | |
1148 | * * ABORTING STATE HANDLERS | |
1149 | * ***************************************************************************** */ | |
1150 | ||
38aa74eb | 1151 | /* |
6f231dda DW |
1152 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1153 | * object receives a scic_sds_request_terminate() request. This method is the | |
1154 | * io request aborting state abort handlers. On receipt of a multiple | |
1155 | * terminate requests the io request will transition to the completed state. | |
1156 | * This should not happen in normal operation. enum sci_status SCI_SUCCESS | |
1157 | */ | |
1158 | static enum sci_status scic_sds_request_aborting_state_abort_handler( | |
38aa74eb | 1159 | struct scic_sds_request *request) |
6f231dda | 1160 | { |
38aa74eb CH |
1161 | sci_base_state_machine_change_state(&request->state_machine, |
1162 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1163 | return SCI_SUCCESS; |
1164 | } | |
1165 | ||
38aa74eb | 1166 | /* |
6f231dda DW |
1167 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1168 | * object receives a scic_sds_request_task_completion() request. This method | |
1169 | * decodes the completion type waiting for the abort task complete | |
1170 | * notification. When the abort task complete is received the io request | |
1171 | * transitions to the completed state. enum sci_status SCI_SUCCESS | |
1172 | */ | |
1173 | static enum sci_status scic_sds_request_aborting_state_tc_completion_handler( | |
e2023b87 | 1174 | struct scic_sds_request *sci_req, |
6f231dda DW |
1175 | u32 completion_code) |
1176 | { | |
1177 | switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { | |
1178 | case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT): | |
1179 | case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT): | |
1180 | scic_sds_request_set_status( | |
e2023b87 | 1181 | sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED |
6f231dda DW |
1182 | ); |
1183 | ||
e2023b87 | 1184 | sci_base_state_machine_change_state(&sci_req->state_machine, |
38aa74eb | 1185 | SCI_BASE_REQUEST_STATE_COMPLETED); |
6f231dda DW |
1186 | break; |
1187 | ||
1188 | default: | |
1189 | /* | |
1190 | * Unless we get some strange error wait for the task abort to complete | |
1191 | * TODO: Should there be a state change for this completion? */ | |
1192 | break; | |
1193 | } | |
1194 | ||
1195 | return SCI_SUCCESS; | |
1196 | } | |
1197 | ||
38aa74eb | 1198 | /* |
6f231dda DW |
1199 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1200 | * object receives a scic_sds_request_frame_handler() request. This method | |
1201 | * discards the unsolicited frame since we are waiting for the abort task | |
1202 | * completion. enum sci_status SCI_SUCCESS | |
1203 | */ | |
1204 | static enum sci_status scic_sds_request_aborting_state_frame_handler( | |
e2023b87 | 1205 | struct scic_sds_request *sci_req, |
6f231dda DW |
1206 | u32 frame_index) |
1207 | { | |
1208 | /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */ | |
1209 | ||
1210 | scic_sds_controller_release_frame( | |
e2023b87 | 1211 | sci_req->owning_controller, frame_index); |
6f231dda DW |
1212 | |
1213 | return SCI_SUCCESS; | |
1214 | } | |
1215 | ||
35173d57 | 1216 | static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = { |
6f231dda | 1217 | [SCI_BASE_REQUEST_STATE_INITIAL] = { |
6f231dda DW |
1218 | }, |
1219 | [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { | |
38aa74eb CH |
1220 | .start_handler = scic_sds_request_constructed_state_start_handler, |
1221 | .abort_handler = scic_sds_request_constructed_state_abort_handler, | |
6f231dda DW |
1222 | }, |
1223 | [SCI_BASE_REQUEST_STATE_STARTED] = { | |
38aa74eb | 1224 | .abort_handler = scic_sds_request_started_state_abort_handler, |
38aa74eb | 1225 | .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler, |
38aa74eb | 1226 | .frame_handler = scic_sds_request_started_state_frame_handler, |
6f231dda DW |
1227 | }, |
1228 | [SCI_BASE_REQUEST_STATE_COMPLETED] = { | |
38aa74eb | 1229 | .complete_handler = scic_sds_request_completed_state_complete_handler, |
6f231dda DW |
1230 | }, |
1231 | [SCI_BASE_REQUEST_STATE_ABORTING] = { | |
38aa74eb | 1232 | .abort_handler = scic_sds_request_aborting_state_abort_handler, |
38aa74eb | 1233 | .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler, |
38aa74eb | 1234 | .frame_handler = scic_sds_request_aborting_state_frame_handler, |
6f231dda DW |
1235 | }, |
1236 | [SCI_BASE_REQUEST_STATE_FINAL] = { | |
6f231dda DW |
1237 | }, |
1238 | }; | |
1239 | ||
1240 | /** | |
1241 | * scic_sds_request_initial_state_enter() - | |
1242 | * @object: This parameter specifies the base object for which the state | |
1243 | * transition is occurring. | |
1244 | * | |
1245 | * This method implements the actions taken when entering the | |
1246 | * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial | |
1247 | * base request is constructed. Entry into the initial state sets all handlers | |
1248 | * for the io request object to their default handlers. none | |
1249 | */ | |
9a0fff7b | 1250 | static void scic_sds_request_initial_state_enter(void *object) |
6f231dda | 1251 | { |
890cae9b | 1252 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1253 | |
1254 | SET_STATE_HANDLER( | |
e2023b87 | 1255 | sci_req, |
6f231dda DW |
1256 | scic_sds_request_state_handler_table, |
1257 | SCI_BASE_REQUEST_STATE_INITIAL | |
1258 | ); | |
1259 | } | |
1260 | ||
1261 | /** | |
1262 | * scic_sds_request_constructed_state_enter() - | |
1263 | * @object: The io request object that is to enter the constructed state. | |
1264 | * | |
1265 | * This method implements the actions taken when entering the | |
1266 | * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers | |
1267 | * for the the constructed state. none | |
1268 | */ | |
9a0fff7b | 1269 | static void scic_sds_request_constructed_state_enter(void *object) |
6f231dda | 1270 | { |
890cae9b | 1271 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1272 | |
1273 | SET_STATE_HANDLER( | |
e2023b87 | 1274 | sci_req, |
6f231dda DW |
1275 | scic_sds_request_state_handler_table, |
1276 | SCI_BASE_REQUEST_STATE_CONSTRUCTED | |
1277 | ); | |
1278 | } | |
1279 | ||
1280 | /** | |
1281 | * scic_sds_request_started_state_enter() - | |
1282 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1283 | * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. |
6f231dda DW |
1284 | * |
1285 | * This method implements the actions taken when entering the | |
1286 | * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a | |
1287 | * SCSI Task request we must enter the started substate machine. none | |
1288 | */ | |
9a0fff7b | 1289 | static void scic_sds_request_started_state_enter(void *object) |
6f231dda | 1290 | { |
890cae9b | 1291 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1292 | |
1293 | SET_STATE_HANDLER( | |
e2023b87 | 1294 | sci_req, |
6f231dda DW |
1295 | scic_sds_request_state_handler_table, |
1296 | SCI_BASE_REQUEST_STATE_STARTED | |
1297 | ); | |
1298 | ||
1299 | /* | |
1300 | * Most of the request state machines have a started substate machine so | |
1301 | * start its execution on the entry to the started state. */ | |
e2023b87 DJ |
1302 | if (sci_req->has_started_substate_machine == true) |
1303 | sci_base_state_machine_start(&sci_req->started_substate_machine); | |
6f231dda DW |
1304 | } |
1305 | ||
1306 | /** | |
1307 | * scic_sds_request_started_state_exit() - | |
1308 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1309 | * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST |
6f231dda DW |
1310 | * object. |
1311 | * | |
1312 | * This method implements the actions taken when exiting the | |
1313 | * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be | |
1314 | * to stop the started substate machine. none | |
1315 | */ | |
9a0fff7b | 1316 | static void scic_sds_request_started_state_exit(void *object) |
6f231dda | 1317 | { |
890cae9b | 1318 | struct scic_sds_request *sci_req = object; |
6f231dda | 1319 | |
e2023b87 DJ |
1320 | if (sci_req->has_started_substate_machine == true) |
1321 | sci_base_state_machine_stop(&sci_req->started_substate_machine); | |
6f231dda DW |
1322 | } |
1323 | ||
1324 | /** | |
1325 | * scic_sds_request_completed_state_enter() - | |
1326 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1327 | * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST |
6f231dda DW |
1328 | * object. |
1329 | * | |
1330 | * This method implements the actions taken when entering the | |
1331 | * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the | |
1332 | * SCIC_SDS_IO_REQUEST has completed. The method will decode the request | |
1333 | * completion status and convert it to an enum sci_status to return in the | |
1334 | * completion callback function. none | |
1335 | */ | |
9a0fff7b | 1336 | static void scic_sds_request_completed_state_enter(void *object) |
6f231dda | 1337 | { |
890cae9b | 1338 | struct scic_sds_request *sci_req = object; |
09d7da13 DJ |
1339 | struct scic_sds_controller *scic = |
1340 | scic_sds_request_get_controller(sci_req); | |
cc3dbd0a | 1341 | struct isci_host *ihost = scic_to_ihost(scic); |
67ea838d | 1342 | struct isci_request *ireq = sci_req_to_ireq(sci_req); |
6f231dda | 1343 | |
09d7da13 DJ |
1344 | SET_STATE_HANDLER(sci_req, |
1345 | scic_sds_request_state_handler_table, | |
1346 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1347 | |
1348 | /* Tell the SCI_USER that the IO request is complete */ | |
09d7da13 DJ |
1349 | if (sci_req->is_task_management_request == false) |
1350 | isci_request_io_request_complete(ihost, | |
1351 | ireq, | |
1352 | sci_req->sci_status); | |
1353 | else | |
1354 | isci_task_request_complete(ihost, ireq, sci_req->sci_status); | |
6f231dda DW |
1355 | } |
1356 | ||
1357 | /** | |
1358 | * scic_sds_request_aborting_state_enter() - | |
1359 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1360 | * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST |
6f231dda DW |
1361 | * object. |
1362 | * | |
1363 | * This method implements the actions taken when entering the | |
1364 | * SCI_BASE_REQUEST_STATE_ABORTING state. none | |
1365 | */ | |
9a0fff7b | 1366 | static void scic_sds_request_aborting_state_enter(void *object) |
6f231dda | 1367 | { |
890cae9b | 1368 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1369 | |
1370 | /* Setting the abort bit in the Task Context is required by the silicon. */ | |
e2023b87 | 1371 | sci_req->task_context_buffer->abort = 1; |
6f231dda DW |
1372 | |
1373 | SET_STATE_HANDLER( | |
e2023b87 | 1374 | sci_req, |
6f231dda DW |
1375 | scic_sds_request_state_handler_table, |
1376 | SCI_BASE_REQUEST_STATE_ABORTING | |
1377 | ); | |
1378 | } | |
1379 | ||
1380 | /** | |
1381 | * scic_sds_request_final_state_enter() - | |
1382 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1383 | * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. |
6f231dda DW |
1384 | * |
1385 | * This method implements the actions taken when entering the | |
1386 | * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the | |
1387 | * state handlers in place. none | |
1388 | */ | |
9a0fff7b | 1389 | static void scic_sds_request_final_state_enter(void *object) |
6f231dda | 1390 | { |
890cae9b | 1391 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1392 | |
1393 | SET_STATE_HANDLER( | |
e2023b87 | 1394 | sci_req, |
6f231dda DW |
1395 | scic_sds_request_state_handler_table, |
1396 | SCI_BASE_REQUEST_STATE_FINAL | |
1397 | ); | |
1398 | } | |
1399 | ||
35173d57 | 1400 | static const struct sci_base_state scic_sds_request_state_table[] = { |
6f231dda DW |
1401 | [SCI_BASE_REQUEST_STATE_INITIAL] = { |
1402 | .enter_state = scic_sds_request_initial_state_enter, | |
1403 | }, | |
1404 | [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { | |
1405 | .enter_state = scic_sds_request_constructed_state_enter, | |
1406 | }, | |
1407 | [SCI_BASE_REQUEST_STATE_STARTED] = { | |
1408 | .enter_state = scic_sds_request_started_state_enter, | |
1409 | .exit_state = scic_sds_request_started_state_exit | |
1410 | }, | |
1411 | [SCI_BASE_REQUEST_STATE_COMPLETED] = { | |
1412 | .enter_state = scic_sds_request_completed_state_enter, | |
1413 | }, | |
1414 | [SCI_BASE_REQUEST_STATE_ABORTING] = { | |
1415 | .enter_state = scic_sds_request_aborting_state_enter, | |
1416 | }, | |
1417 | [SCI_BASE_REQUEST_STATE_FINAL] = { | |
1418 | .enter_state = scic_sds_request_final_state_enter, | |
1419 | }, | |
1420 | }; | |
1421 | ||
35173d57 DW |
1422 | static void scic_sds_general_request_construct(struct scic_sds_controller *scic, |
1423 | struct scic_sds_remote_device *sci_dev, | |
67ea838d | 1424 | u16 io_tag, struct scic_sds_request *sci_req) |
35173d57 | 1425 | { |
890cae9b | 1426 | sci_base_state_machine_construct(&sci_req->state_machine, sci_req, |
38aa74eb CH |
1427 | scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL); |
1428 | sci_base_state_machine_start(&sci_req->state_machine); | |
1429 | ||
35173d57 | 1430 | sci_req->io_tag = io_tag; |
35173d57 DW |
1431 | sci_req->owning_controller = scic; |
1432 | sci_req->target_device = sci_dev; | |
1433 | sci_req->has_started_substate_machine = false; | |
1434 | sci_req->protocol = SCIC_NO_PROTOCOL; | |
1435 | sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; | |
1436 | sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev); | |
1437 | ||
1438 | sci_req->sci_status = SCI_SUCCESS; | |
1439 | sci_req->scu_status = 0; | |
1440 | sci_req->post_context = 0xFFFFFFFF; | |
1441 | ||
1442 | sci_req->is_task_management_request = false; | |
1443 | ||
1444 | if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { | |
1445 | sci_req->was_tag_assigned_by_user = false; | |
1446 | sci_req->task_context_buffer = NULL; | |
1447 | } else { | |
1448 | sci_req->was_tag_assigned_by_user = true; | |
1449 | ||
1450 | sci_req->task_context_buffer = | |
1451 | scic_sds_controller_get_task_context_buffer(scic, io_tag); | |
1452 | } | |
1453 | } | |
1454 | ||
2ec53eb4 DJ |
1455 | enum sci_status |
1456 | scic_io_request_construct(struct scic_sds_controller *scic, | |
1457 | struct scic_sds_remote_device *sci_dev, | |
67ea838d | 1458 | u16 io_tag, struct scic_sds_request *sci_req) |
35173d57 | 1459 | { |
a1a113b0 | 1460 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
35173d57 | 1461 | enum sci_status status = SCI_SUCCESS; |
35173d57 DW |
1462 | |
1463 | /* Build the common part of the request */ | |
67ea838d | 1464 | scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); |
2ec53eb4 DJ |
1465 | |
1466 | if (sci_dev->rnc.remote_node_index == | |
1467 | SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) | |
35173d57 DW |
1468 | return SCI_FAILURE_INVALID_REMOTE_DEVICE; |
1469 | ||
2ec53eb4 | 1470 | if (dev->dev_type == SAS_END_DEV) |
35173d57 | 1471 | scic_sds_ssp_io_request_assign_buffers(sci_req); |
2ec53eb4 DJ |
1472 | else if ((dev->dev_type == SATA_DEV) || |
1473 | (dev->tproto & SAS_PROTOCOL_STP)) { | |
35173d57 | 1474 | scic_sds_stp_request_assign_buffers(sci_req); |
b7645818 | 1475 | memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd)); |
a1a113b0 | 1476 | } else if (dev_is_expander(dev)) { |
35173d57 | 1477 | scic_sds_smp_request_assign_buffers(sci_req); |
b7645818 | 1478 | memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd)); |
a1a113b0 | 1479 | } else |
35173d57 | 1480 | status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; |
35173d57 DW |
1481 | |
1482 | if (status == SCI_SUCCESS) { | |
67ea838d DW |
1483 | memset(sci_req->task_context_buffer, 0, |
1484 | offsetof(struct scu_task_context, sgl_pair_ab)); | |
35173d57 DW |
1485 | } |
1486 | ||
1487 | return status; | |
1488 | } | |
1489 | ||
1490 | enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, | |
1491 | struct scic_sds_remote_device *sci_dev, | |
67ea838d | 1492 | u16 io_tag, struct scic_sds_request *sci_req) |
35173d57 | 1493 | { |
a1a113b0 | 1494 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
35173d57 | 1495 | enum sci_status status = SCI_SUCCESS; |
35173d57 DW |
1496 | |
1497 | /* Build the common part of the request */ | |
67ea838d | 1498 | scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); |
35173d57 | 1499 | |
a1a113b0 | 1500 | if (dev->dev_type == SAS_END_DEV) { |
35173d57 DW |
1501 | scic_sds_ssp_task_request_assign_buffers(sci_req); |
1502 | ||
1503 | sci_req->has_started_substate_machine = true; | |
1504 | ||
1505 | /* Construct the started sub-state machine. */ | |
1506 | sci_base_state_machine_construct( | |
1507 | &sci_req->started_substate_machine, | |
890cae9b | 1508 | sci_req, |
35173d57 DW |
1509 | scic_sds_io_request_started_task_mgmt_substate_table, |
1510 | SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION | |
1511 | ); | |
a1a113b0 | 1512 | } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) |
35173d57 | 1513 | scic_sds_stp_request_assign_buffers(sci_req); |
a1a113b0 | 1514 | else |
35173d57 | 1515 | status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; |
35173d57 DW |
1516 | |
1517 | if (status == SCI_SUCCESS) { | |
1518 | sci_req->is_task_management_request = true; | |
1519 | memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context)); | |
35173d57 DW |
1520 | } |
1521 | ||
1522 | return status; | |
1523 | } |