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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 DW |
57 | #include "scic_controller.h" |
58 | #include "scic_io_request.h" | |
6f231dda | 59 | #include "scic_sds_controller.h" |
bc99aa47 | 60 | #include "scu_registers.h" |
6f231dda | 61 | #include "scic_sds_port.h" |
88f3b62a | 62 | #include "remote_device.h" |
6f231dda DW |
63 | #include "scic_sds_request.h" |
64 | #include "scic_sds_smp_request.h" | |
65 | #include "scic_sds_stp_request.h" | |
66 | #include "scic_sds_unsolicited_frame_control.h" | |
6f231dda | 67 | #include "sci_environment.h" |
6f231dda DW |
68 | #include "sci_util.h" |
69 | #include "scu_completion_codes.h" | |
70 | #include "scu_constants.h" | |
71 | #include "scu_task_context.h" | |
72 | ||
6f231dda DW |
73 | /* |
74 | * **************************************************************************** | |
75 | * * SCIC SDS IO REQUEST CONSTANTS | |
76 | * **************************************************************************** */ | |
77 | ||
78 | /** | |
79 | * | |
80 | * | |
81 | * We have no timer requirements for IO requests right now | |
82 | */ | |
83 | #define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0) | |
84 | #define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0) | |
85 | ||
86 | /* | |
87 | * **************************************************************************** | |
88 | * * SCIC SDS IO REQUEST MACROS | |
89 | * **************************************************************************** */ | |
90 | ||
6f231dda DW |
91 | /** |
92 | * scic_ssp_io_request_get_object_size() - | |
93 | * | |
94 | * This macro returns the sizeof memory required to store the an SSP IO | |
95 | * request. This does not include the size of the SGL or SCU Task Context | |
96 | * memory. | |
97 | */ | |
98 | #define scic_ssp_io_request_get_object_size() \ | |
99 | (\ | |
0cfa890e | 100 | sizeof(struct ssp_cmd_iu) \ |
af5ae893 | 101 | + SSP_RESP_IU_MAX_SIZE \ |
6f231dda DW |
102 | ) |
103 | ||
104 | /** | |
105 | * scic_sds_ssp_request_get_command_buffer() - | |
106 | * | |
107 | * This macro returns the address of the ssp command buffer in the io request | |
108 | * memory | |
109 | */ | |
110 | #define scic_sds_ssp_request_get_command_buffer(memory) \ | |
0cfa890e | 111 | ((struct ssp_cmd_iu *)(\ |
6f231dda DW |
112 | ((char *)(memory)) + sizeof(struct scic_sds_request) \ |
113 | )) | |
114 | ||
115 | /** | |
116 | * scic_sds_ssp_request_get_response_buffer() - | |
117 | * | |
118 | * This macro returns the address of the ssp response buffer in the io request | |
119 | * memory | |
120 | */ | |
121 | #define scic_sds_ssp_request_get_response_buffer(memory) \ | |
af5ae893 | 122 | ((struct ssp_response_iu *)(\ |
6f231dda | 123 | ((char *)(scic_sds_ssp_request_get_command_buffer(memory))) \ |
0cfa890e | 124 | + sizeof(struct ssp_cmd_iu) \ |
6f231dda DW |
125 | )) |
126 | ||
127 | /** | |
128 | * scic_sds_ssp_request_get_task_context_buffer() - | |
129 | * | |
130 | * This macro returns the address of the task context buffer in the io request | |
131 | * memory | |
132 | */ | |
133 | #define scic_sds_ssp_request_get_task_context_buffer(memory) \ | |
134 | ((struct scu_task_context *)(\ | |
135 | ((char *)(scic_sds_ssp_request_get_response_buffer(memory))) \ | |
af5ae893 | 136 | + SSP_RESP_IU_MAX_SIZE \ |
6f231dda DW |
137 | )) |
138 | ||
139 | /** | |
140 | * scic_sds_ssp_request_get_sgl_element_buffer() - | |
141 | * | |
142 | * This macro returns the address of the sgl elment pairs in the io request | |
143 | * memory buffer | |
144 | */ | |
145 | #define scic_sds_ssp_request_get_sgl_element_buffer(memory) \ | |
146 | ((struct scu_sgl_element_pair *)(\ | |
147 | ((char *)(scic_sds_ssp_request_get_task_context_buffer(memory))) \ | |
148 | + sizeof(struct scu_task_context) \ | |
149 | )) | |
150 | ||
151 | ||
152 | /** | |
153 | * scic_ssp_task_request_get_object_size() - | |
154 | * | |
155 | * This macro returns the sizeof of memory required to store an SSP Task | |
156 | * request. This does not include the size of the SCU Task Context memory. | |
157 | */ | |
158 | #define scic_ssp_task_request_get_object_size() \ | |
159 | (\ | |
0cfa890e | 160 | sizeof(struct ssp_task_iu) \ |
af5ae893 | 161 | + SSP_RESP_IU_MAX_SIZE \ |
6f231dda DW |
162 | ) |
163 | ||
164 | /** | |
165 | * scic_sds_ssp_task_request_get_command_buffer() - | |
166 | * | |
167 | * This macro returns the address of the ssp command buffer in the task request | |
168 | * memory. Yes its the same as the above macro except for the name. | |
169 | */ | |
170 | #define scic_sds_ssp_task_request_get_command_buffer(memory) \ | |
0cfa890e | 171 | ((struct ssp_task_iu *)(\ |
6f231dda DW |
172 | ((char *)(memory)) + sizeof(struct scic_sds_request) \ |
173 | )) | |
174 | ||
175 | /** | |
176 | * scic_sds_ssp_task_request_get_response_buffer() - | |
177 | * | |
178 | * This macro returns the address of the ssp response buffer in the task | |
179 | * request memory. | |
180 | */ | |
181 | #define scic_sds_ssp_task_request_get_response_buffer(memory) \ | |
af5ae893 | 182 | ((struct ssp_response_iu *)(\ |
6f231dda | 183 | ((char *)(scic_sds_ssp_task_request_get_command_buffer(memory))) \ |
0cfa890e | 184 | + sizeof(struct ssp_task_iu) \ |
6f231dda DW |
185 | )) |
186 | ||
187 | /** | |
188 | * scic_sds_ssp_task_request_get_task_context_buffer() - | |
189 | * | |
190 | * This macro returs the task context buffer for the SSP task request. | |
191 | */ | |
192 | #define scic_sds_ssp_task_request_get_task_context_buffer(memory) \ | |
193 | ((struct scu_task_context *)(\ | |
194 | ((char *)(scic_sds_ssp_task_request_get_response_buffer(memory))) \ | |
af5ae893 | 195 | + SSP_RESP_IU_MAX_SIZE \ |
6f231dda DW |
196 | )) |
197 | ||
198 | ||
199 | ||
200 | /* | |
201 | * **************************************************************************** | |
202 | * * SCIC SDS IO REQUEST PRIVATE METHODS | |
203 | * **************************************************************************** */ | |
204 | ||
205 | /** | |
206 | * | |
207 | * | |
208 | * This method returns the size required to store an SSP IO request object. u32 | |
209 | */ | |
210 | static u32 scic_sds_ssp_request_get_object_size(void) | |
211 | { | |
212 | return sizeof(struct scic_sds_request) | |
213 | + scic_ssp_io_request_get_object_size() | |
214 | + sizeof(struct scu_task_context) | |
fe9a6431 | 215 | + SMP_CACHE_BYTES |
6f231dda DW |
216 | + sizeof(struct scu_sgl_element_pair) * SCU_MAX_SGL_ELEMENT_PAIRS; |
217 | } | |
218 | ||
219 | /** | |
220 | * This method returns the sgl element pair for the specificed sgl_pair index. | |
e2023b87 | 221 | * @sci_req: This parameter specifies the IO request for which to retrieve |
6f231dda DW |
222 | * the Scatter-Gather List element pair. |
223 | * @sgl_pair_index: This parameter specifies the index into the SGL element | |
224 | * pair to be retrieved. | |
225 | * | |
226 | * This method returns a pointer to an struct scu_sgl_element_pair. | |
227 | */ | |
228 | static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair( | |
e2023b87 | 229 | struct scic_sds_request *sci_req, |
6f231dda DW |
230 | u32 sgl_pair_index |
231 | ) { | |
232 | struct scu_task_context *task_context; | |
233 | ||
e2023b87 | 234 | task_context = (struct scu_task_context *)sci_req->task_context_buffer; |
6f231dda DW |
235 | |
236 | if (sgl_pair_index == 0) { | |
237 | return &task_context->sgl_pair_ab; | |
238 | } else if (sgl_pair_index == 1) { | |
239 | return &task_context->sgl_pair_cd; | |
240 | } | |
241 | ||
e2023b87 | 242 | return &sci_req->sgl_element_pair_buffer[sgl_pair_index - 2]; |
6f231dda DW |
243 | } |
244 | ||
245 | /** | |
246 | * This function will build the SGL list for an IO request. | |
e2023b87 | 247 | * @sci_req: This parameter specifies the IO request for which to build |
6f231dda DW |
248 | * the Scatter-Gather List. |
249 | * | |
250 | */ | |
6389a775 | 251 | void scic_sds_request_build_sgl(struct scic_sds_request *sds_request) |
6f231dda | 252 | { |
890cae9b | 253 | struct isci_request *isci_request = sds_request->ireq; |
6389a775 DJ |
254 | struct isci_host *isci_host = isci_request->isci_host; |
255 | struct sas_task *task = isci_request_access_task(isci_request); | |
256 | struct scatterlist *sg = NULL; | |
257 | dma_addr_t dma_addr; | |
258 | u32 sg_idx = 0; | |
259 | struct scu_sgl_element_pair *scu_sg = NULL; | |
260 | struct scu_sgl_element_pair *prev_sg = NULL; | |
261 | ||
262 | if (task->num_scatter > 0) { | |
263 | sg = task->scatter; | |
264 | ||
265 | while (sg) { | |
266 | scu_sg = scic_sds_request_get_sgl_element_pair( | |
267 | sds_request, | |
268 | sg_idx); | |
269 | ||
270 | SCU_SGL_COPY(scu_sg->A, sg); | |
271 | ||
272 | sg = sg_next(sg); | |
273 | ||
274 | if (sg) { | |
275 | SCU_SGL_COPY(scu_sg->B, sg); | |
276 | sg = sg_next(sg); | |
277 | } else | |
278 | SCU_SGL_ZERO(scu_sg->B); | |
279 | ||
280 | if (prev_sg) { | |
281 | dma_addr = | |
282 | scic_io_request_get_dma_addr( | |
283 | sds_request, | |
284 | scu_sg); | |
285 | ||
286 | prev_sg->next_pair_upper = | |
287 | upper_32_bits(dma_addr); | |
288 | prev_sg->next_pair_lower = | |
289 | lower_32_bits(dma_addr); | |
290 | } | |
291 | ||
292 | prev_sg = scu_sg; | |
293 | sg_idx++; | |
6f231dda | 294 | } |
6389a775 DJ |
295 | } else { /* handle when no sg */ |
296 | scu_sg = scic_sds_request_get_sgl_element_pair(sds_request, | |
297 | sg_idx); | |
6f231dda | 298 | |
6389a775 DJ |
299 | dma_addr = dma_map_single(&isci_host->pdev->dev, |
300 | task->scatter, | |
301 | task->total_xfer_len, | |
302 | task->data_dir); | |
6f231dda | 303 | |
6389a775 DJ |
304 | isci_request->zero_scatter_daddr = dma_addr; |
305 | ||
306 | scu_sg->A.length = task->total_xfer_len; | |
307 | scu_sg->A.address_upper = upper_32_bits(dma_addr); | |
308 | scu_sg->A.address_lower = lower_32_bits(dma_addr); | |
6f231dda DW |
309 | } |
310 | ||
6389a775 DJ |
311 | if (scu_sg) { |
312 | scu_sg->next_pair_upper = 0; | |
313 | scu_sg->next_pair_lower = 0; | |
6f231dda DW |
314 | } |
315 | } | |
316 | ||
6f231dda DW |
317 | /** |
318 | * This method build the remainder of the IO request object. | |
e2023b87 | 319 | * @sci_req: This parameter specifies the request object being constructed. |
6f231dda DW |
320 | * |
321 | * The scic_sds_general_request_construct() must be called before this call is | |
322 | * valid. none | |
323 | */ | |
324 | static void scic_sds_ssp_io_request_assign_buffers( | |
e2023b87 | 325 | struct scic_sds_request *sci_req) |
6f231dda | 326 | { |
e2023b87 DJ |
327 | sci_req->command_buffer = |
328 | scic_sds_ssp_request_get_command_buffer(sci_req); | |
329 | sci_req->response_buffer = | |
330 | scic_sds_ssp_request_get_response_buffer(sci_req); | |
331 | sci_req->sgl_element_pair_buffer = | |
332 | scic_sds_ssp_request_get_sgl_element_buffer(sci_req); | |
333 | sci_req->sgl_element_pair_buffer = | |
334 | PTR_ALIGN(sci_req->sgl_element_pair_buffer, | |
fe9a6431 | 335 | sizeof(struct scu_sgl_element_pair)); |
6f231dda | 336 | |
e2023b87 DJ |
337 | if (sci_req->was_tag_assigned_by_user == false) { |
338 | sci_req->task_context_buffer = | |
339 | scic_sds_ssp_request_get_task_context_buffer(sci_req); | |
340 | sci_req->task_context_buffer = | |
341 | PTR_ALIGN(sci_req->task_context_buffer, | |
fe9a6431 | 342 | SMP_CACHE_BYTES); |
6f231dda DW |
343 | } |
344 | } | |
345 | ||
0cfa890e | 346 | static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req) |
6f231dda | 347 | { |
0cfa890e DJ |
348 | struct ssp_cmd_iu *cmd_iu; |
349 | struct isci_request *ireq = sci_req->ireq; | |
350 | struct sas_task *task = isci_request_access_task(ireq); | |
6f231dda | 351 | |
0cfa890e | 352 | cmd_iu = sci_req->command_buffer; |
6f231dda | 353 | |
0cfa890e DJ |
354 | memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8); |
355 | cmd_iu->add_cdb_len = 0; | |
356 | cmd_iu->_r_a = 0; | |
357 | cmd_iu->_r_b = 0; | |
358 | cmd_iu->en_fburst = 0; /* unsupported */ | |
359 | cmd_iu->task_prio = task->ssp_task.task_prio; | |
360 | cmd_iu->task_attr = task->ssp_task.task_attr; | |
361 | cmd_iu->_r_c = 0; | |
6f231dda | 362 | |
51a57cff DJ |
363 | sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb, |
364 | sizeof(task->ssp_task.cdb) / sizeof(u32)); | |
6f231dda DW |
365 | } |
366 | ||
0cfa890e | 367 | static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req) |
6f231dda | 368 | { |
0cfa890e DJ |
369 | struct ssp_task_iu *task_iu; |
370 | struct isci_request *ireq = sci_req->ireq; | |
371 | struct sas_task *task = isci_request_access_task(ireq); | |
372 | struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); | |
6f231dda | 373 | |
0cfa890e | 374 | task_iu = sci_req->command_buffer; |
6f231dda | 375 | |
0cfa890e | 376 | memset(task_iu, 0, sizeof(struct ssp_task_iu)); |
6f231dda | 377 | |
0cfa890e | 378 | memcpy(task_iu->LUN, task->ssp_task.LUN, 8); |
6f231dda | 379 | |
0cfa890e DJ |
380 | task_iu->task_func = isci_tmf->tmf_code; |
381 | task_iu->task_tag = | |
382 | (ireq->ttype == tmf_task) ? | |
383 | isci_tmf->io_tag : | |
384 | SCI_CONTROLLER_INVALID_IO_TAG; | |
6f231dda DW |
385 | } |
386 | ||
6f231dda DW |
387 | /** |
388 | * This method is will fill in the SCU Task Context for any type of SSP request. | |
e2023b87 | 389 | * @sci_req: |
6f231dda DW |
390 | * @task_context: |
391 | * | |
392 | */ | |
393 | static void scu_ssp_reqeust_construct_task_context( | |
6389a775 | 394 | struct scic_sds_request *sds_request, |
6f231dda DW |
395 | struct scu_task_context *task_context) |
396 | { | |
6389a775 DJ |
397 | dma_addr_t dma_addr; |
398 | struct scic_sds_controller *controller; | |
6f231dda DW |
399 | struct scic_sds_remote_device *target_device; |
400 | struct scic_sds_port *target_port; | |
401 | ||
6389a775 DJ |
402 | controller = scic_sds_request_get_controller(sds_request); |
403 | target_device = scic_sds_request_get_device(sds_request); | |
404 | target_port = scic_sds_request_get_port(sds_request); | |
6f231dda DW |
405 | |
406 | /* Fill in the TC with the its required data */ | |
407 | task_context->abort = 0; | |
408 | task_context->priority = 0; | |
409 | task_context->initiator_request = 1; | |
8f304c36 | 410 | task_context->connection_rate = target_device->connection_rate; |
6f231dda | 411 | task_context->protocol_engine_index = |
6389a775 | 412 | scic_sds_controller_get_protocol_engine_group(controller); |
6f231dda DW |
413 | task_context->logical_port_index = |
414 | scic_sds_port_get_index(target_port); | |
415 | task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP; | |
416 | task_context->valid = SCU_TASK_CONTEXT_VALID; | |
417 | task_context->context_type = SCU_TASK_CONTEXT_TYPE; | |
418 | ||
419 | task_context->remote_node_index = | |
6389a775 | 420 | scic_sds_remote_device_get_index(sds_request->target_device); |
6f231dda DW |
421 | task_context->command_code = 0; |
422 | ||
423 | task_context->link_layer_control = 0; | |
424 | task_context->do_not_dma_ssp_good_response = 1; | |
425 | task_context->strict_ordering = 0; | |
426 | task_context->control_frame = 0; | |
427 | task_context->timeout_enable = 0; | |
428 | task_context->block_guard_enable = 0; | |
429 | ||
430 | task_context->address_modifier = 0; | |
431 | ||
e2023b87 | 432 | /* task_context->type.ssp.tag = sci_req->io_tag; */ |
6f231dda DW |
433 | task_context->task_phase = 0x01; |
434 | ||
6389a775 DJ |
435 | if (sds_request->was_tag_assigned_by_user) { |
436 | /* | |
437 | * Build the task context now since we have already read | |
438 | * the data | |
439 | */ | |
440 | sds_request->post_context = | |
441 | (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | | |
442 | (scic_sds_controller_get_protocol_engine_group( | |
443 | controller) << | |
444 | SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | | |
445 | (scic_sds_port_get_index(target_port) << | |
446 | SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) | | |
447 | scic_sds_io_tag_get_index(sds_request->io_tag)); | |
6f231dda | 448 | } else { |
6389a775 DJ |
449 | /* |
450 | * Build the task context now since we have already read | |
451 | * the data | |
452 | * | |
453 | * I/O tag index is not assigned because we have to wait | |
454 | * until we get a TCi | |
455 | */ | |
456 | sds_request->post_context = | |
457 | (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | | |
458 | (scic_sds_controller_get_protocol_engine_group( | |
459 | owning_controller) << | |
460 | SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | | |
461 | (scic_sds_port_get_index(target_port) << | |
462 | SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)); | |
6f231dda DW |
463 | } |
464 | ||
6389a775 DJ |
465 | /* |
466 | * Copy the physical address for the command buffer to the | |
467 | * SCU Task Context | |
468 | */ | |
469 | dma_addr = scic_io_request_get_dma_addr(sds_request, | |
470 | sds_request->command_buffer); | |
471 | ||
472 | task_context->command_iu_upper = upper_32_bits(dma_addr); | |
473 | task_context->command_iu_lower = lower_32_bits(dma_addr); | |
474 | ||
475 | /* | |
476 | * Copy the physical address for the response buffer to the | |
477 | * SCU Task Context | |
478 | */ | |
479 | dma_addr = scic_io_request_get_dma_addr(sds_request, | |
480 | sds_request->response_buffer); | |
481 | ||
482 | task_context->response_iu_upper = upper_32_bits(dma_addr); | |
483 | task_context->response_iu_lower = lower_32_bits(dma_addr); | |
6f231dda DW |
484 | } |
485 | ||
486 | /** | |
487 | * This method is will fill in the SCU Task Context for a SSP IO request. | |
e2023b87 | 488 | * @sci_req: |
6f231dda DW |
489 | * |
490 | */ | |
491 | static void scu_ssp_io_request_construct_task_context( | |
82d29928 DW |
492 | struct scic_sds_request *sci_req, |
493 | enum dma_data_direction dir, | |
494 | u32 len) | |
6f231dda DW |
495 | { |
496 | struct scu_task_context *task_context; | |
497 | ||
82d29928 | 498 | task_context = scic_sds_request_get_task_context(sci_req); |
6f231dda | 499 | |
82d29928 | 500 | scu_ssp_reqeust_construct_task_context(sci_req, task_context); |
6f231dda | 501 | |
0cfa890e DJ |
502 | task_context->ssp_command_iu_length = |
503 | sizeof(struct ssp_cmd_iu) / sizeof(u32); | |
8694e792 | 504 | task_context->type.ssp.frame_type = SSP_COMMAND; |
6f231dda | 505 | |
82d29928 DW |
506 | switch (dir) { |
507 | case DMA_FROM_DEVICE: | |
508 | case DMA_NONE: | |
509 | default: | |
6f231dda DW |
510 | task_context->task_type = SCU_TASK_TYPE_IOREAD; |
511 | break; | |
82d29928 | 512 | case DMA_TO_DEVICE: |
6f231dda DW |
513 | task_context->task_type = SCU_TASK_TYPE_IOWRITE; |
514 | break; | |
515 | } | |
516 | ||
82d29928 | 517 | task_context->transfer_length_bytes = len; |
6f231dda | 518 | |
82d29928 DW |
519 | if (task_context->transfer_length_bytes > 0) |
520 | scic_sds_request_build_sgl(sci_req); | |
6f231dda DW |
521 | } |
522 | ||
523 | ||
524 | /** | |
525 | * This method will fill in the remainder of the io request object for SSP Task | |
526 | * requests. | |
e2023b87 | 527 | * @sci_req: |
6f231dda DW |
528 | * |
529 | */ | |
530 | static void scic_sds_ssp_task_request_assign_buffers( | |
e2023b87 | 531 | struct scic_sds_request *sci_req) |
6f231dda DW |
532 | { |
533 | /* Assign all of the buffer pointers */ | |
e2023b87 DJ |
534 | sci_req->command_buffer = |
535 | scic_sds_ssp_task_request_get_command_buffer(sci_req); | |
536 | sci_req->response_buffer = | |
537 | scic_sds_ssp_task_request_get_response_buffer(sci_req); | |
538 | sci_req->sgl_element_pair_buffer = NULL; | |
539 | ||
540 | if (sci_req->was_tag_assigned_by_user == false) { | |
541 | sci_req->task_context_buffer = | |
542 | scic_sds_ssp_task_request_get_task_context_buffer(sci_req); | |
543 | sci_req->task_context_buffer = | |
544 | PTR_ALIGN(sci_req->task_context_buffer, SMP_CACHE_BYTES); | |
6f231dda DW |
545 | } |
546 | } | |
547 | ||
548 | /** | |
549 | * This method will fill in the SCU Task Context for a SSP Task request. The | |
550 | * following important settings are utilized: -# priority == | |
551 | * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued | |
552 | * ahead of other task destined for the same Remote Node. -# task_type == | |
553 | * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type | |
554 | * (i.e. non-raw frame) is being utilized to perform task management. -# | |
555 | * control_frame == 1. This ensures that the proper endianess is set so | |
556 | * that the bytes are transmitted in the right order for a task frame. | |
e2023b87 | 557 | * @sci_req: This parameter specifies the task request object being |
6f231dda DW |
558 | * constructed. |
559 | * | |
560 | */ | |
561 | static void scu_ssp_task_request_construct_task_context( | |
e2023b87 | 562 | struct scic_sds_request *sci_req) |
6f231dda DW |
563 | { |
564 | struct scu_task_context *task_context; | |
565 | ||
e2023b87 | 566 | task_context = scic_sds_request_get_task_context(sci_req); |
6f231dda | 567 | |
e2023b87 | 568 | scu_ssp_reqeust_construct_task_context(sci_req, task_context); |
6f231dda DW |
569 | |
570 | task_context->control_frame = 1; | |
571 | task_context->priority = SCU_TASK_PRIORITY_HIGH; | |
572 | task_context->task_type = SCU_TASK_TYPE_RAW_FRAME; | |
573 | task_context->transfer_length_bytes = 0; | |
8694e792 | 574 | task_context->type.ssp.frame_type = SSP_TASK; |
0cfa890e DJ |
575 | task_context->ssp_command_iu_length = |
576 | sizeof(struct ssp_task_iu) / sizeof(u32); | |
6f231dda DW |
577 | } |
578 | ||
579 | ||
580 | /** | |
581 | * This method constructs the SSP Command IU data for this ssp passthrough | |
582 | * comand request object. | |
e2023b87 | 583 | * @sci_req: This parameter specifies the request object for which the SSP |
6f231dda DW |
584 | * command information unit is being built. |
585 | * | |
586 | * enum sci_status, returns invalid parameter is cdb > 16 | |
587 | */ | |
588 | ||
589 | ||
590 | /** | |
591 | * This method constructs the SATA request object. | |
e2023b87 | 592 | * @sci_req: |
6f231dda DW |
593 | * @sat_protocol: |
594 | * @transfer_length: | |
595 | * @data_direction: | |
596 | * @copy_rx_frame: | |
597 | * | |
598 | * enum sci_status | |
599 | */ | |
e76d6180 DJ |
600 | static enum sci_status |
601 | scic_io_request_construct_sata(struct scic_sds_request *sci_req, | |
602 | u32 len, | |
603 | enum dma_data_direction dir, | |
604 | bool copy) | |
6f231dda DW |
605 | { |
606 | enum sci_status status = SCI_SUCCESS; | |
e76d6180 DJ |
607 | struct isci_request *ireq = sci_req->ireq; |
608 | struct sas_task *task = isci_request_access_task(ireq); | |
609 | ||
610 | /* check for management protocols */ | |
611 | if (ireq->ttype == tmf_task) { | |
612 | struct isci_tmf *tmf = isci_request_access_tmf(ireq); | |
613 | ||
614 | if (tmf->tmf_code == isci_tmf_sata_srst_high || | |
615 | tmf->tmf_code == isci_tmf_sata_srst_low) | |
616 | return scic_sds_stp_soft_reset_request_construct(sci_req); | |
617 | else { | |
618 | dev_err(scic_to_dev(sci_req->owning_controller), | |
619 | "%s: Request 0x%p received un-handled SAT " | |
620 | "management protocol 0x%x.\n", | |
621 | __func__, sci_req, tmf->tmf_code); | |
622 | ||
623 | return SCI_FAILURE; | |
624 | } | |
625 | } | |
6f231dda | 626 | |
e76d6180 DJ |
627 | if (!sas_protocol_ata(task->task_proto)) { |
628 | dev_err(scic_to_dev(sci_req->owning_controller), | |
629 | "%s: Non-ATA protocol in SATA path: 0x%x\n", | |
630 | __func__, | |
631 | task->task_proto); | |
632 | return SCI_FAILURE; | |
6f231dda | 633 | |
e76d6180 | 634 | } |
6f231dda | 635 | |
e76d6180 DJ |
636 | /* non data */ |
637 | if (task->data_dir == DMA_NONE) | |
638 | return scic_sds_stp_non_data_request_construct(sci_req); | |
6f231dda | 639 | |
e76d6180 DJ |
640 | /* NCQ */ |
641 | if (task->ata_task.use_ncq) | |
642 | return scic_sds_stp_ncq_request_construct(sci_req, len, dir); | |
6f231dda | 643 | |
e76d6180 DJ |
644 | /* DMA */ |
645 | if (task->ata_task.dma_xfer) | |
646 | return scic_sds_stp_udma_request_construct(sci_req, len, dir); | |
647 | else /* PIO */ | |
648 | return scic_sds_stp_pio_request_construct(sci_req, copy); | |
6f231dda DW |
649 | |
650 | return status; | |
651 | } | |
652 | ||
6f231dda DW |
653 | u32 scic_io_request_get_object_size(void) |
654 | { | |
655 | u32 ssp_request_size; | |
656 | u32 stp_request_size; | |
657 | u32 smp_request_size; | |
658 | ||
659 | ssp_request_size = scic_sds_ssp_request_get_object_size(); | |
660 | stp_request_size = scic_sds_stp_request_get_object_size(); | |
661 | smp_request_size = scic_sds_smp_request_get_object_size(); | |
662 | ||
663 | return max(ssp_request_size, max(stp_request_size, smp_request_size)); | |
664 | } | |
665 | ||
6f231dda DW |
666 | enum sci_status scic_io_request_construct_basic_ssp( |
667 | struct scic_sds_request *sci_req) | |
668 | { | |
890cae9b | 669 | struct isci_request *isci_request = sci_req->ireq; |
6f231dda DW |
670 | |
671 | sci_req->protocol = SCIC_SSP_PROTOCOL; | |
672 | ||
6f231dda DW |
673 | scu_ssp_io_request_construct_task_context( |
674 | sci_req, | |
7392d275 DJ |
675 | isci_request_io_request_get_data_direction(isci_request), |
676 | isci_request_io_request_get_transfer_length(isci_request)); | |
6f231dda DW |
677 | |
678 | scic_sds_io_request_build_ssp_command_iu(sci_req); | |
679 | ||
38aa74eb CH |
680 | sci_base_state_machine_change_state(&sci_req->state_machine, |
681 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
682 | |
683 | return SCI_SUCCESS; | |
684 | } | |
685 | ||
686 | ||
687 | enum sci_status scic_task_request_construct_ssp( | |
688 | struct scic_sds_request *sci_req) | |
689 | { | |
690 | /* Construct the SSP Task SCU Task Context */ | |
691 | scu_ssp_task_request_construct_task_context(sci_req); | |
692 | ||
693 | /* Fill in the SSP Task IU */ | |
694 | scic_sds_task_request_build_ssp_task_iu(sci_req); | |
695 | ||
38aa74eb CH |
696 | sci_base_state_machine_change_state(&sci_req->state_machine, |
697 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
698 | |
699 | return SCI_SUCCESS; | |
700 | } | |
701 | ||
702 | ||
7392d275 DJ |
703 | enum sci_status scic_io_request_construct_basic_sata( |
704 | struct scic_sds_request *sci_req) | |
6f231dda DW |
705 | { |
706 | enum sci_status status; | |
82d29928 | 707 | struct scic_sds_stp_request *stp_req; |
82d29928 DW |
708 | u32 len; |
709 | enum dma_data_direction dir; | |
710 | bool copy = false; | |
890cae9b | 711 | struct isci_request *isci_request = sci_req->ireq; |
7392d275 | 712 | struct sas_task *task = isci_request_access_task(isci_request); |
6f231dda | 713 | |
82d29928 | 714 | stp_req = container_of(sci_req, typeof(*stp_req), parent); |
6f231dda DW |
715 | |
716 | sci_req->protocol = SCIC_STP_PROTOCOL; | |
717 | ||
7392d275 DJ |
718 | len = isci_request_io_request_get_transfer_length(isci_request); |
719 | dir = isci_request_io_request_get_data_direction(isci_request); | |
7392d275 | 720 | copy = (task->data_dir == DMA_NONE) ? false : true; |
6f231dda | 721 | |
e76d6180 | 722 | status = scic_io_request_construct_sata(sci_req, len, dir, copy); |
6f231dda DW |
723 | |
724 | if (status == SCI_SUCCESS) | |
38aa74eb CH |
725 | sci_base_state_machine_change_state(&sci_req->state_machine, |
726 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
727 | |
728 | return status; | |
729 | } | |
730 | ||
731 | ||
732 | enum sci_status scic_task_request_construct_sata( | |
733 | struct scic_sds_request *sci_req) | |
734 | { | |
e76d6180 DJ |
735 | enum sci_status status = SCI_SUCCESS; |
736 | struct isci_request *ireq = sci_req->ireq; | |
737 | ||
738 | /* check for management protocols */ | |
739 | if (ireq->ttype == tmf_task) { | |
740 | struct isci_tmf *tmf = isci_request_access_tmf(ireq); | |
741 | ||
742 | if (tmf->tmf_code == isci_tmf_sata_srst_high || | |
743 | tmf->tmf_code == isci_tmf_sata_srst_low) { | |
744 | status = scic_sds_stp_soft_reset_request_construct(sci_req); | |
745 | } else { | |
746 | dev_err(scic_to_dev(sci_req->owning_controller), | |
747 | "%s: Request 0x%p received un-handled SAT " | |
748 | "Protocol 0x%x.\n", | |
749 | __func__, sci_req, tmf->tmf_code); | |
750 | ||
751 | return SCI_FAILURE; | |
752 | } | |
6f231dda DW |
753 | } |
754 | ||
755 | if (status == SCI_SUCCESS) | |
e76d6180 DJ |
756 | sci_base_state_machine_change_state( |
757 | &sci_req->state_machine, | |
758 | SCI_BASE_REQUEST_STATE_CONSTRUCTED); | |
6f231dda DW |
759 | |
760 | return status; | |
761 | } | |
762 | ||
763 | ||
764 | u16 scic_io_request_get_io_tag( | |
765 | struct scic_sds_request *sci_req) | |
766 | { | |
767 | return sci_req->io_tag; | |
768 | } | |
769 | ||
770 | ||
771 | u32 scic_request_get_controller_status( | |
772 | struct scic_sds_request *sci_req) | |
773 | { | |
774 | return sci_req->scu_status; | |
775 | } | |
776 | ||
777 | ||
778 | void *scic_io_request_get_command_iu_address( | |
779 | struct scic_sds_request *sci_req) | |
780 | { | |
781 | return sci_req->command_buffer; | |
782 | } | |
783 | ||
784 | ||
785 | void *scic_io_request_get_response_iu_address( | |
786 | struct scic_sds_request *sci_req) | |
787 | { | |
788 | return sci_req->response_buffer; | |
789 | } | |
790 | ||
791 | ||
792 | #define SCU_TASK_CONTEXT_SRAM 0x200000 | |
793 | u32 scic_io_request_get_number_of_bytes_transferred( | |
794 | struct scic_sds_request *scic_sds_request) | |
795 | { | |
467e855a | 796 | struct scic_sds_controller *scic = scic_sds_request->owning_controller; |
6f231dda DW |
797 | u32 ret_val = 0; |
798 | ||
467e855a BB |
799 | if (readl(&scic->smu_registers->address_modifier) == 0) { |
800 | void __iomem *scu_reg_base = scic->scu_registers; | |
6f231dda DW |
801 | /* |
802 | * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where | |
803 | * BAR1 is the scu_registers | |
804 | * 0x20002C = 0x200000 + 0x2c | |
805 | * = start of task context SRAM + offset of (type.ssp.data_offset) | |
806 | * TCi is the io_tag of struct scic_sds_request */ | |
467e855a BB |
807 | ret_val = readl(scu_reg_base + |
808 | (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) + | |
809 | ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag))); | |
6f231dda DW |
810 | } |
811 | ||
812 | return ret_val; | |
813 | } | |
814 | ||
815 | ||
816 | /* | |
817 | * **************************************************************************** | |
818 | * * SCIC SDS Interface Implementation | |
819 | * **************************************************************************** */ | |
820 | ||
38aa74eb CH |
821 | enum sci_status |
822 | scic_sds_request_start(struct scic_sds_request *request) | |
6f231dda | 823 | { |
524b5f72 | 824 | if (request->device_sequence != |
38aa74eb | 825 | scic_sds_remote_device_get_sequence(request->target_device)) |
524b5f72 CH |
826 | return SCI_FAILURE; |
827 | ||
828 | if (request->state_handlers->start_handler) | |
38aa74eb | 829 | return request->state_handlers->start_handler(request); |
524b5f72 CH |
830 | |
831 | dev_warn(scic_to_dev(request->owning_controller), | |
832 | "%s: SCIC IO Request requested to start while in wrong " | |
833 | "state %d\n", | |
834 | __func__, | |
835 | sci_base_state_machine_get_state(&request->state_machine)); | |
836 | ||
837 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
838 | } |
839 | ||
38aa74eb CH |
840 | enum sci_status |
841 | scic_sds_io_request_terminate(struct scic_sds_request *request) | |
6f231dda | 842 | { |
524b5f72 CH |
843 | if (request->state_handlers->abort_handler) |
844 | return request->state_handlers->abort_handler(request); | |
845 | ||
846 | dev_warn(scic_to_dev(request->owning_controller), | |
847 | "%s: SCIC IO Request requested to abort while in wrong " | |
848 | "state %d\n", | |
849 | __func__, | |
850 | sci_base_state_machine_get_state(&request->state_machine)); | |
851 | ||
852 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
853 | } |
854 | ||
38aa74eb CH |
855 | enum sci_status |
856 | scic_sds_io_request_complete(struct scic_sds_request *request) | |
6f231dda | 857 | { |
524b5f72 CH |
858 | if (request->state_handlers->complete_handler) |
859 | return request->state_handlers->complete_handler(request); | |
860 | ||
861 | dev_warn(scic_to_dev(request->owning_controller), | |
862 | "%s: SCIC IO Request requested to complete while in wrong " | |
863 | "state %d\n", | |
864 | __func__, | |
865 | sci_base_state_machine_get_state(&request->state_machine)); | |
866 | ||
867 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
868 | } |
869 | ||
6f231dda | 870 | enum sci_status scic_sds_io_request_event_handler( |
524b5f72 | 871 | struct scic_sds_request *request, |
6f231dda DW |
872 | u32 event_code) |
873 | { | |
524b5f72 CH |
874 | if (request->state_handlers->event_handler) |
875 | return request->state_handlers->event_handler(request, event_code); | |
876 | ||
877 | dev_warn(scic_to_dev(request->owning_controller), | |
878 | "%s: SCIC IO Request given event code notification %x while " | |
879 | "in wrong state %d\n", | |
880 | __func__, | |
881 | event_code, | |
882 | sci_base_state_machine_get_state(&request->state_machine)); | |
883 | ||
884 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
885 | } |
886 | ||
524b5f72 CH |
887 | enum sci_status |
888 | scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code) | |
889 | { | |
890 | if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED && | |
891 | request->has_started_substate_machine == false) | |
892 | return scic_sds_request_started_state_tc_completion_handler(request, completion_code); | |
893 | else if (request->state_handlers->tc_completion_handler) | |
894 | return request->state_handlers->tc_completion_handler(request, completion_code); | |
895 | ||
896 | dev_warn(scic_to_dev(request->owning_controller), | |
897 | "%s: SCIC IO Request given task completion notification %x " | |
898 | "while in wrong state %d\n", | |
899 | __func__, | |
900 | completion_code, | |
901 | sci_base_state_machine_get_state(&request->state_machine)); | |
902 | ||
903 | return SCI_FAILURE_INVALID_STATE; | |
904 | ||
905 | } | |
906 | ||
907 | ||
6f231dda DW |
908 | /** |
909 | * | |
e2023b87 | 910 | * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start |
6f231dda DW |
911 | * operation is to be executed. |
912 | * @frame_index: The frame index returned by the hardware for the reqeust | |
913 | * object. | |
914 | * | |
915 | * This method invokes the core state frame handler for the | |
916 | * SCIC_SDS_IO_REQUEST_T object. enum sci_status | |
917 | */ | |
918 | enum sci_status scic_sds_io_request_frame_handler( | |
524b5f72 | 919 | struct scic_sds_request *request, |
6f231dda DW |
920 | u32 frame_index) |
921 | { | |
524b5f72 CH |
922 | if (request->state_handlers->frame_handler) |
923 | return request->state_handlers->frame_handler(request, frame_index); | |
924 | ||
925 | dev_warn(scic_to_dev(request->owning_controller), | |
926 | "%s: SCIC IO Request given unexpected frame %x while in " | |
927 | "state %d\n", | |
928 | __func__, | |
929 | frame_index, | |
930 | sci_base_state_machine_get_state(&request->state_machine)); | |
931 | ||
932 | scic_sds_controller_release_frame(request->owning_controller, frame_index); | |
933 | return SCI_FAILURE_INVALID_STATE; | |
6f231dda DW |
934 | } |
935 | ||
6f231dda | 936 | /* |
af5ae893 | 937 | * This function copies response data for requests returning response data |
6f231dda | 938 | * instead of sense data. |
e2023b87 | 939 | * @sci_req: This parameter specifies the request object for which to copy |
6f231dda | 940 | * the response data. |
6f231dda | 941 | */ |
af5ae893 | 942 | void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req) |
6f231dda | 943 | { |
af5ae893 DJ |
944 | void *resp_buf; |
945 | u32 len; | |
946 | struct ssp_response_iu *ssp_response; | |
947 | struct isci_request *ireq = sci_req->ireq; | |
948 | struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); | |
6f231dda | 949 | |
af5ae893 | 950 | ssp_response = sci_req->response_buffer; |
6f231dda | 951 | |
af5ae893 | 952 | resp_buf = &isci_tmf->resp.resp_iu; |
6f231dda | 953 | |
af5ae893 DJ |
954 | len = min_t(u32, |
955 | SSP_RESP_IU_MAX_SIZE, | |
956 | be32_to_cpu(ssp_response->response_data_len)); | |
6f231dda | 957 | |
af5ae893 | 958 | memcpy(resp_buf, ssp_response->resp_data, len); |
6f231dda DW |
959 | } |
960 | ||
6f231dda DW |
961 | /* |
962 | * ***************************************************************************** | |
963 | * * CONSTRUCTED STATE HANDLERS | |
964 | * ***************************************************************************** */ | |
965 | ||
38aa74eb | 966 | /* |
6f231dda DW |
967 | * This method implements the action taken when a constructed |
968 | * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request. | |
969 | * This method will, if necessary, allocate a TCi for the io request object and | |
970 | * then will, if necessary, copy the constructed TC data into the actual TC | |
971 | * buffer. If everything is successful the post context field is updated with | |
972 | * the TCi so the controller can post the request to the hardware. enum sci_status | |
973 | * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES | |
974 | */ | |
975 | static enum sci_status scic_sds_request_constructed_state_start_handler( | |
38aa74eb | 976 | struct scic_sds_request *request) |
6f231dda DW |
977 | { |
978 | struct scu_task_context *task_context; | |
6f231dda | 979 | |
38aa74eb CH |
980 | if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { |
981 | request->io_tag = | |
982 | scic_controller_allocate_io_tag(request->owning_controller); | |
6f231dda DW |
983 | } |
984 | ||
985 | /* Record the IO Tag in the request */ | |
38aa74eb CH |
986 | if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) { |
987 | task_context = request->task_context_buffer; | |
6f231dda | 988 | |
38aa74eb | 989 | task_context->task_index = scic_sds_io_tag_get_index(request->io_tag); |
6f231dda DW |
990 | |
991 | switch (task_context->protocol_type) { | |
992 | case SCU_TASK_CONTEXT_PROTOCOL_SMP: | |
993 | case SCU_TASK_CONTEXT_PROTOCOL_SSP: | |
994 | /* SSP/SMP Frame */ | |
38aa74eb | 995 | task_context->type.ssp.tag = request->io_tag; |
6f231dda DW |
996 | task_context->type.ssp.target_port_transfer_tag = 0xFFFF; |
997 | break; | |
998 | ||
999 | case SCU_TASK_CONTEXT_PROTOCOL_STP: | |
1000 | /* | |
1001 | * STP/SATA Frame | |
38aa74eb | 1002 | * task_context->type.stp.ncq_tag = request->ncq_tag; */ |
6f231dda DW |
1003 | break; |
1004 | ||
1005 | case SCU_TASK_CONTEXT_PROTOCOL_NONE: | |
1006 | /* / @todo When do we set no protocol type? */ | |
1007 | break; | |
1008 | ||
1009 | default: | |
1010 | /* This should never happen since we build the IO requests */ | |
1011 | break; | |
1012 | } | |
1013 | ||
1014 | /* | |
1015 | * Check to see if we need to copy the task context buffer | |
1016 | * or have been building into the task context buffer */ | |
38aa74eb | 1017 | if (request->was_tag_assigned_by_user == false) { |
6f231dda | 1018 | scic_sds_controller_copy_task_context( |
38aa74eb | 1019 | request->owning_controller, request); |
6f231dda DW |
1020 | } |
1021 | ||
1022 | /* Add to the post_context the io tag value */ | |
38aa74eb | 1023 | request->post_context |= scic_sds_io_tag_get_index(request->io_tag); |
6f231dda DW |
1024 | |
1025 | /* Everything is good go ahead and change state */ | |
38aa74eb CH |
1026 | sci_base_state_machine_change_state(&request->state_machine, |
1027 | SCI_BASE_REQUEST_STATE_STARTED); | |
6f231dda DW |
1028 | |
1029 | return SCI_SUCCESS; | |
1030 | } | |
1031 | ||
1032 | return SCI_FAILURE_INSUFFICIENT_RESOURCES; | |
1033 | } | |
1034 | ||
38aa74eb | 1035 | /* |
6f231dda DW |
1036 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1037 | * object receives a scic_sds_request_terminate() request. Since the request | |
1038 | * has not yet been posted to the hardware the request transitions to the | |
1039 | * completed state. enum sci_status SCI_SUCCESS | |
1040 | */ | |
1041 | static enum sci_status scic_sds_request_constructed_state_abort_handler( | |
38aa74eb | 1042 | struct scic_sds_request *request) |
6f231dda | 1043 | { |
6f231dda DW |
1044 | /* |
1045 | * This request has been terminated by the user make sure that the correct | |
1046 | * status code is returned */ | |
38aa74eb | 1047 | scic_sds_request_set_status(request, |
6f231dda | 1048 | SCU_TASK_DONE_TASK_ABORT, |
38aa74eb | 1049 | SCI_FAILURE_IO_TERMINATED); |
6f231dda | 1050 | |
38aa74eb CH |
1051 | sci_base_state_machine_change_state(&request->state_machine, |
1052 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1053 | return SCI_SUCCESS; |
1054 | } | |
1055 | ||
1056 | /* | |
1057 | * ***************************************************************************** | |
1058 | * * STARTED STATE HANDLERS | |
1059 | * ***************************************************************************** */ | |
1060 | ||
38aa74eb | 1061 | /* |
6f231dda DW |
1062 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1063 | * object receives a scic_sds_request_terminate() request. Since the request | |
1064 | * has been posted to the hardware the io request state is changed to the | |
1065 | * aborting state. enum sci_status SCI_SUCCESS | |
1066 | */ | |
1067 | enum sci_status scic_sds_request_started_state_abort_handler( | |
38aa74eb | 1068 | struct scic_sds_request *request) |
6f231dda | 1069 | { |
38aa74eb CH |
1070 | if (request->has_started_substate_machine) |
1071 | sci_base_state_machine_stop(&request->started_substate_machine); | |
6f231dda | 1072 | |
38aa74eb CH |
1073 | sci_base_state_machine_change_state(&request->state_machine, |
1074 | SCI_BASE_REQUEST_STATE_ABORTING); | |
6f231dda DW |
1075 | return SCI_SUCCESS; |
1076 | } | |
1077 | ||
af5ae893 | 1078 | /* |
6f231dda DW |
1079 | * scic_sds_request_started_state_tc_completion_handler() - This method process |
1080 | * TC (task context) completions for normal IO request (i.e. Task/Abort | |
1081 | * Completions of type 0). This method will update the | |
1082 | * SCIC_SDS_IO_REQUEST_T::status field. | |
e2023b87 | 1083 | * @sci_req: This parameter specifies the request for which a completion |
6f231dda DW |
1084 | * occurred. |
1085 | * @completion_code: This parameter specifies the completion code received from | |
1086 | * the SCU. | |
1087 | * | |
1088 | */ | |
af5ae893 DJ |
1089 | enum sci_status |
1090 | scic_sds_request_started_state_tc_completion_handler( | |
1091 | struct scic_sds_request *sci_req, | |
1092 | u32 completion_code) | |
6f231dda | 1093 | { |
af5ae893 DJ |
1094 | u8 datapres; |
1095 | struct ssp_response_iu *resp_iu; | |
6f231dda | 1096 | |
af5ae893 DJ |
1097 | /* |
1098 | * TODO: Any SDMA return code of other than 0 is bad | |
6f231dda DW |
1099 | * decode 0x003C0000 to determine SDMA status |
1100 | */ | |
1101 | switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { | |
1102 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): | |
af5ae893 DJ |
1103 | scic_sds_request_set_status(sci_req, |
1104 | SCU_TASK_DONE_GOOD, | |
1105 | SCI_SUCCESS); | |
6f231dda DW |
1106 | break; |
1107 | ||
1108 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP): | |
1109 | { | |
1110 | /* | |
af5ae893 DJ |
1111 | * There are times when the SCU hardware will return an early |
1112 | * response because the io request specified more data than is | |
1113 | * returned by the target device (mode pages, inquiry data, | |
1114 | * etc.). We must check the response stats to see if this is | |
1115 | * truly a failed request or a good request that just got | |
1116 | * completed early. | |
1117 | */ | |
1118 | struct ssp_response_iu *resp = sci_req->response_buffer; | |
51a57cff DJ |
1119 | ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); |
1120 | ||
1121 | sci_swab32_cpy(sci_req->response_buffer, | |
1122 | sci_req->response_buffer, | |
1123 | word_cnt); | |
6f231dda | 1124 | |
af5ae893 | 1125 | if (resp->status == 0) { |
6f231dda | 1126 | scic_sds_request_set_status( |
af5ae893 DJ |
1127 | sci_req, |
1128 | SCU_TASK_DONE_GOOD, | |
1129 | SCI_SUCCESS_IO_DONE_EARLY); | |
6f231dda DW |
1130 | } else { |
1131 | scic_sds_request_set_status( | |
e2023b87 | 1132 | sci_req, |
6f231dda | 1133 | SCU_TASK_DONE_CHECK_RESPONSE, |
af5ae893 | 1134 | SCI_FAILURE_IO_RESPONSE_VALID); |
6f231dda DW |
1135 | } |
1136 | } | |
1137 | break; | |
1138 | ||
1139 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE): | |
51a57cff DJ |
1140 | { |
1141 | ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); | |
6f231dda | 1142 | |
51a57cff DJ |
1143 | sci_swab32_cpy(sci_req->response_buffer, |
1144 | sci_req->response_buffer, | |
1145 | word_cnt); | |
1146 | ||
1147 | scic_sds_request_set_status(sci_req, | |
1148 | SCU_TASK_DONE_CHECK_RESPONSE, | |
1149 | SCI_FAILURE_IO_RESPONSE_VALID); | |
6f231dda | 1150 | break; |
51a57cff | 1151 | } |
6f231dda DW |
1152 | |
1153 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR): | |
1154 | /* | |
af5ae893 DJ |
1155 | * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame |
1156 | * guaranteed to be received before this completion status is | |
1157 | * posted? | |
1158 | */ | |
1159 | resp_iu = sci_req->response_buffer; | |
1160 | datapres = resp_iu->datapres; | |
1161 | ||
1162 | if ((datapres == 0x01) || (datapres == 0x02)) { | |
6f231dda | 1163 | scic_sds_request_set_status( |
e2023b87 | 1164 | sci_req, |
6f231dda | 1165 | SCU_TASK_DONE_CHECK_RESPONSE, |
af5ae893 DJ |
1166 | SCI_FAILURE_IO_RESPONSE_VALID); |
1167 | } else | |
6f231dda | 1168 | scic_sds_request_set_status( |
af5ae893 | 1169 | sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); |
6f231dda DW |
1170 | break; |
1171 | ||
1172 | /* only stp device gets suspended. */ | |
1173 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO): | |
1174 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR): | |
1175 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR): | |
1176 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR): | |
1177 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR): | |
1178 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN): | |
1179 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR): | |
1180 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP): | |
1181 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS): | |
1182 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR): | |
1183 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR): | |
e2023b87 | 1184 | if (sci_req->protocol == SCIC_STP_PROTOCOL) { |
6f231dda | 1185 | scic_sds_request_set_status( |
e2023b87 | 1186 | sci_req, |
af5ae893 DJ |
1187 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
1188 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
1189 | SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); | |
6f231dda DW |
1190 | } else { |
1191 | scic_sds_request_set_status( | |
e2023b87 | 1192 | sci_req, |
af5ae893 DJ |
1193 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
1194 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
1195 | SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); | |
6f231dda DW |
1196 | } |
1197 | break; | |
1198 | ||
1199 | /* both stp/ssp device gets suspended */ | |
1200 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR): | |
1201 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION): | |
1202 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1): | |
1203 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2): | |
1204 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3): | |
1205 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION): | |
1206 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION): | |
1207 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY): | |
1208 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED): | |
1209 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED): | |
1210 | scic_sds_request_set_status( | |
e2023b87 | 1211 | sci_req, |
af5ae893 DJ |
1212 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
1213 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
1214 | SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); | |
6f231dda DW |
1215 | break; |
1216 | ||
1217 | /* neither ssp nor stp gets suspended. */ | |
1218 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR): | |
1219 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR): | |
1220 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR): | |
1221 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR): | |
1222 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR): | |
1223 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA): | |
1224 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR): | |
1225 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR): | |
1226 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR): | |
1227 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR): | |
1228 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA): | |
1229 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL): | |
1230 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV): | |
1231 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV): | |
1232 | case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND): | |
1233 | default: | |
1234 | scic_sds_request_set_status( | |
e2023b87 | 1235 | sci_req, |
af5ae893 DJ |
1236 | SCU_GET_COMPLETION_TL_STATUS(completion_code) >> |
1237 | SCU_COMPLETION_TL_STATUS_SHIFT, | |
1238 | SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); | |
6f231dda DW |
1239 | break; |
1240 | } | |
1241 | ||
af5ae893 DJ |
1242 | /* |
1243 | * TODO: This is probably wrong for ACK/NAK timeout conditions | |
6f231dda DW |
1244 | */ |
1245 | ||
af5ae893 DJ |
1246 | /* In all cases we will treat this as the completion of the IO req. */ |
1247 | sci_base_state_machine_change_state( | |
1248 | &sci_req->state_machine, | |
1249 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1250 | return SCI_SUCCESS; |
1251 | } | |
1252 | ||
38aa74eb | 1253 | /* |
6f231dda DW |
1254 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1255 | * object receives a scic_sds_request_frame_handler() request. This method | |
1256 | * first determines the frame type received. If this is a response frame then | |
1257 | * the response data is copied to the io request response buffer for processing | |
1258 | * at completion time. If the frame type is not a response buffer an error is | |
1259 | * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE | |
1260 | */ | |
af5ae893 DJ |
1261 | static enum sci_status |
1262 | scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req, | |
1263 | u32 frame_index) | |
6f231dda DW |
1264 | { |
1265 | enum sci_status status; | |
2d9c2240 DJ |
1266 | u32 *frame_header; |
1267 | struct ssp_frame_hdr ssp_hdr; | |
1268 | ssize_t word_cnt; | |
6f231dda | 1269 | |
6f231dda | 1270 | status = scic_sds_unsolicited_frame_control_get_header( |
e2023b87 | 1271 | &(scic_sds_request_get_controller(sci_req)->uf_control), |
6f231dda | 1272 | frame_index, |
af5ae893 | 1273 | (void **)&frame_header); |
6f231dda | 1274 | |
2d9c2240 DJ |
1275 | word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32); |
1276 | sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt); | |
1277 | ||
1278 | if (ssp_hdr.frame_type == SSP_RESPONSE) { | |
af5ae893 | 1279 | struct ssp_response_iu *resp_iu; |
51a57cff | 1280 | ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); |
6f231dda DW |
1281 | |
1282 | status = scic_sds_unsolicited_frame_control_get_buffer( | |
e2023b87 | 1283 | &(scic_sds_request_get_controller(sci_req)->uf_control), |
6f231dda | 1284 | frame_index, |
af5ae893 | 1285 | (void **)&resp_iu); |
6f231dda | 1286 | |
51a57cff DJ |
1287 | sci_swab32_cpy(sci_req->response_buffer, |
1288 | resp_iu, word_cnt); | |
6f231dda | 1289 | |
af5ae893 | 1290 | resp_iu = sci_req->response_buffer; |
6f231dda | 1291 | |
af5ae893 DJ |
1292 | if ((resp_iu->datapres == 0x01) || |
1293 | (resp_iu->datapres == 0x02)) { | |
6f231dda | 1294 | scic_sds_request_set_status( |
e2023b87 | 1295 | sci_req, |
6f231dda | 1296 | SCU_TASK_DONE_CHECK_RESPONSE, |
af5ae893 | 1297 | SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); |
6f231dda DW |
1298 | } else |
1299 | scic_sds_request_set_status( | |
af5ae893 DJ |
1300 | sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); |
1301 | } else { | |
6f231dda | 1302 | /* This was not a response frame why did it get forwarded? */ |
e2023b87 | 1303 | dev_err(scic_to_dev(sci_req->owning_controller), |
6f231dda DW |
1304 | "%s: SCIC IO Request 0x%p received unexpected " |
1305 | "frame %d type 0x%02x\n", | |
1306 | __func__, | |
e2023b87 | 1307 | sci_req, |
6f231dda | 1308 | frame_index, |
2d9c2240 | 1309 | ssp_hdr.frame_type); |
af5ae893 | 1310 | } |
6f231dda DW |
1311 | |
1312 | /* | |
1313 | * In any case we are done with this frame buffer return it to the | |
af5ae893 DJ |
1314 | * controller |
1315 | */ | |
6f231dda | 1316 | scic_sds_controller_release_frame( |
af5ae893 | 1317 | sci_req->owning_controller, frame_index); |
6f231dda DW |
1318 | |
1319 | return SCI_SUCCESS; | |
1320 | } | |
1321 | ||
1322 | /* | |
1323 | * ***************************************************************************** | |
1324 | * * COMPLETED STATE HANDLERS | |
1325 | * ***************************************************************************** */ | |
1326 | ||
1327 | ||
38aa74eb | 1328 | /* |
6f231dda DW |
1329 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1330 | * object receives a scic_sds_request_complete() request. This method frees up | |
1331 | * any io request resources that have been allocated and transitions the | |
1332 | * request to its final state. Consider stopping the state machine instead of | |
1333 | * transitioning to the final state? enum sci_status SCI_SUCCESS | |
1334 | */ | |
1335 | static enum sci_status scic_sds_request_completed_state_complete_handler( | |
38aa74eb | 1336 | struct scic_sds_request *request) |
6f231dda | 1337 | { |
38aa74eb | 1338 | if (request->was_tag_assigned_by_user != true) { |
6f231dda | 1339 | scic_controller_free_io_tag( |
38aa74eb | 1340 | request->owning_controller, request->io_tag); |
6f231dda DW |
1341 | } |
1342 | ||
38aa74eb | 1343 | if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) { |
6f231dda | 1344 | scic_sds_controller_release_frame( |
38aa74eb | 1345 | request->owning_controller, request->saved_rx_frame_index); |
6f231dda DW |
1346 | } |
1347 | ||
38aa74eb CH |
1348 | sci_base_state_machine_change_state(&request->state_machine, |
1349 | SCI_BASE_REQUEST_STATE_FINAL); | |
6f231dda DW |
1350 | return SCI_SUCCESS; |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * ***************************************************************************** | |
1355 | * * ABORTING STATE HANDLERS | |
1356 | * ***************************************************************************** */ | |
1357 | ||
38aa74eb | 1358 | /* |
6f231dda DW |
1359 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1360 | * object receives a scic_sds_request_terminate() request. This method is the | |
1361 | * io request aborting state abort handlers. On receipt of a multiple | |
1362 | * terminate requests the io request will transition to the completed state. | |
1363 | * This should not happen in normal operation. enum sci_status SCI_SUCCESS | |
1364 | */ | |
1365 | static enum sci_status scic_sds_request_aborting_state_abort_handler( | |
38aa74eb | 1366 | struct scic_sds_request *request) |
6f231dda | 1367 | { |
38aa74eb CH |
1368 | sci_base_state_machine_change_state(&request->state_machine, |
1369 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1370 | return SCI_SUCCESS; |
1371 | } | |
1372 | ||
38aa74eb | 1373 | /* |
6f231dda DW |
1374 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1375 | * object receives a scic_sds_request_task_completion() request. This method | |
1376 | * decodes the completion type waiting for the abort task complete | |
1377 | * notification. When the abort task complete is received the io request | |
1378 | * transitions to the completed state. enum sci_status SCI_SUCCESS | |
1379 | */ | |
1380 | static enum sci_status scic_sds_request_aborting_state_tc_completion_handler( | |
e2023b87 | 1381 | struct scic_sds_request *sci_req, |
6f231dda DW |
1382 | u32 completion_code) |
1383 | { | |
1384 | switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { | |
1385 | case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT): | |
1386 | case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT): | |
1387 | scic_sds_request_set_status( | |
e2023b87 | 1388 | sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED |
6f231dda DW |
1389 | ); |
1390 | ||
e2023b87 | 1391 | sci_base_state_machine_change_state(&sci_req->state_machine, |
38aa74eb | 1392 | SCI_BASE_REQUEST_STATE_COMPLETED); |
6f231dda DW |
1393 | break; |
1394 | ||
1395 | default: | |
1396 | /* | |
1397 | * Unless we get some strange error wait for the task abort to complete | |
1398 | * TODO: Should there be a state change for this completion? */ | |
1399 | break; | |
1400 | } | |
1401 | ||
1402 | return SCI_SUCCESS; | |
1403 | } | |
1404 | ||
38aa74eb | 1405 | /* |
6f231dda DW |
1406 | * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T |
1407 | * object receives a scic_sds_request_frame_handler() request. This method | |
1408 | * discards the unsolicited frame since we are waiting for the abort task | |
1409 | * completion. enum sci_status SCI_SUCCESS | |
1410 | */ | |
1411 | static enum sci_status scic_sds_request_aborting_state_frame_handler( | |
e2023b87 | 1412 | struct scic_sds_request *sci_req, |
6f231dda DW |
1413 | u32 frame_index) |
1414 | { | |
1415 | /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */ | |
1416 | ||
1417 | scic_sds_controller_release_frame( | |
e2023b87 | 1418 | sci_req->owning_controller, frame_index); |
6f231dda DW |
1419 | |
1420 | return SCI_SUCCESS; | |
1421 | } | |
1422 | ||
35173d57 | 1423 | static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = { |
6f231dda | 1424 | [SCI_BASE_REQUEST_STATE_INITIAL] = { |
6f231dda DW |
1425 | }, |
1426 | [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { | |
38aa74eb CH |
1427 | .start_handler = scic_sds_request_constructed_state_start_handler, |
1428 | .abort_handler = scic_sds_request_constructed_state_abort_handler, | |
6f231dda DW |
1429 | }, |
1430 | [SCI_BASE_REQUEST_STATE_STARTED] = { | |
38aa74eb | 1431 | .abort_handler = scic_sds_request_started_state_abort_handler, |
38aa74eb | 1432 | .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler, |
38aa74eb | 1433 | .frame_handler = scic_sds_request_started_state_frame_handler, |
6f231dda DW |
1434 | }, |
1435 | [SCI_BASE_REQUEST_STATE_COMPLETED] = { | |
38aa74eb | 1436 | .complete_handler = scic_sds_request_completed_state_complete_handler, |
6f231dda DW |
1437 | }, |
1438 | [SCI_BASE_REQUEST_STATE_ABORTING] = { | |
38aa74eb | 1439 | .abort_handler = scic_sds_request_aborting_state_abort_handler, |
38aa74eb | 1440 | .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler, |
38aa74eb | 1441 | .frame_handler = scic_sds_request_aborting_state_frame_handler, |
6f231dda DW |
1442 | }, |
1443 | [SCI_BASE_REQUEST_STATE_FINAL] = { | |
6f231dda DW |
1444 | }, |
1445 | }; | |
1446 | ||
1447 | /** | |
1448 | * scic_sds_request_initial_state_enter() - | |
1449 | * @object: This parameter specifies the base object for which the state | |
1450 | * transition is occurring. | |
1451 | * | |
1452 | * This method implements the actions taken when entering the | |
1453 | * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial | |
1454 | * base request is constructed. Entry into the initial state sets all handlers | |
1455 | * for the io request object to their default handlers. none | |
1456 | */ | |
9a0fff7b | 1457 | static void scic_sds_request_initial_state_enter(void *object) |
6f231dda | 1458 | { |
890cae9b | 1459 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1460 | |
1461 | SET_STATE_HANDLER( | |
e2023b87 | 1462 | sci_req, |
6f231dda DW |
1463 | scic_sds_request_state_handler_table, |
1464 | SCI_BASE_REQUEST_STATE_INITIAL | |
1465 | ); | |
1466 | } | |
1467 | ||
1468 | /** | |
1469 | * scic_sds_request_constructed_state_enter() - | |
1470 | * @object: The io request object that is to enter the constructed state. | |
1471 | * | |
1472 | * This method implements the actions taken when entering the | |
1473 | * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers | |
1474 | * for the the constructed state. none | |
1475 | */ | |
9a0fff7b | 1476 | static void scic_sds_request_constructed_state_enter(void *object) |
6f231dda | 1477 | { |
890cae9b | 1478 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1479 | |
1480 | SET_STATE_HANDLER( | |
e2023b87 | 1481 | sci_req, |
6f231dda DW |
1482 | scic_sds_request_state_handler_table, |
1483 | SCI_BASE_REQUEST_STATE_CONSTRUCTED | |
1484 | ); | |
1485 | } | |
1486 | ||
1487 | /** | |
1488 | * scic_sds_request_started_state_enter() - | |
1489 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1490 | * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. |
6f231dda DW |
1491 | * |
1492 | * This method implements the actions taken when entering the | |
1493 | * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a | |
1494 | * SCSI Task request we must enter the started substate machine. none | |
1495 | */ | |
9a0fff7b | 1496 | static void scic_sds_request_started_state_enter(void *object) |
6f231dda | 1497 | { |
890cae9b | 1498 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1499 | |
1500 | SET_STATE_HANDLER( | |
e2023b87 | 1501 | sci_req, |
6f231dda DW |
1502 | scic_sds_request_state_handler_table, |
1503 | SCI_BASE_REQUEST_STATE_STARTED | |
1504 | ); | |
1505 | ||
1506 | /* | |
1507 | * Most of the request state machines have a started substate machine so | |
1508 | * start its execution on the entry to the started state. */ | |
e2023b87 DJ |
1509 | if (sci_req->has_started_substate_machine == true) |
1510 | sci_base_state_machine_start(&sci_req->started_substate_machine); | |
6f231dda DW |
1511 | } |
1512 | ||
1513 | /** | |
1514 | * scic_sds_request_started_state_exit() - | |
1515 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1516 | * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST |
6f231dda DW |
1517 | * object. |
1518 | * | |
1519 | * This method implements the actions taken when exiting the | |
1520 | * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be | |
1521 | * to stop the started substate machine. none | |
1522 | */ | |
9a0fff7b | 1523 | static void scic_sds_request_started_state_exit(void *object) |
6f231dda | 1524 | { |
890cae9b | 1525 | struct scic_sds_request *sci_req = object; |
6f231dda | 1526 | |
e2023b87 DJ |
1527 | if (sci_req->has_started_substate_machine == true) |
1528 | sci_base_state_machine_stop(&sci_req->started_substate_machine); | |
6f231dda DW |
1529 | } |
1530 | ||
1531 | /** | |
1532 | * scic_sds_request_completed_state_enter() - | |
1533 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1534 | * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST |
6f231dda DW |
1535 | * object. |
1536 | * | |
1537 | * This method implements the actions taken when entering the | |
1538 | * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the | |
1539 | * SCIC_SDS_IO_REQUEST has completed. The method will decode the request | |
1540 | * completion status and convert it to an enum sci_status to return in the | |
1541 | * completion callback function. none | |
1542 | */ | |
9a0fff7b | 1543 | static void scic_sds_request_completed_state_enter(void *object) |
6f231dda | 1544 | { |
890cae9b | 1545 | struct scic_sds_request *sci_req = object; |
09d7da13 DJ |
1546 | struct scic_sds_controller *scic = |
1547 | scic_sds_request_get_controller(sci_req); | |
d3757c3a | 1548 | struct isci_host *ihost = scic->ihost; |
890cae9b | 1549 | struct isci_request *ireq = sci_req->ireq; |
6f231dda | 1550 | |
09d7da13 DJ |
1551 | SET_STATE_HANDLER(sci_req, |
1552 | scic_sds_request_state_handler_table, | |
1553 | SCI_BASE_REQUEST_STATE_COMPLETED); | |
6f231dda DW |
1554 | |
1555 | /* Tell the SCI_USER that the IO request is complete */ | |
09d7da13 DJ |
1556 | if (sci_req->is_task_management_request == false) |
1557 | isci_request_io_request_complete(ihost, | |
1558 | ireq, | |
1559 | sci_req->sci_status); | |
1560 | else | |
1561 | isci_task_request_complete(ihost, ireq, sci_req->sci_status); | |
6f231dda DW |
1562 | } |
1563 | ||
1564 | /** | |
1565 | * scic_sds_request_aborting_state_enter() - | |
1566 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1567 | * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST |
6f231dda DW |
1568 | * object. |
1569 | * | |
1570 | * This method implements the actions taken when entering the | |
1571 | * SCI_BASE_REQUEST_STATE_ABORTING state. none | |
1572 | */ | |
9a0fff7b | 1573 | static void scic_sds_request_aborting_state_enter(void *object) |
6f231dda | 1574 | { |
890cae9b | 1575 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1576 | |
1577 | /* Setting the abort bit in the Task Context is required by the silicon. */ | |
e2023b87 | 1578 | sci_req->task_context_buffer->abort = 1; |
6f231dda DW |
1579 | |
1580 | SET_STATE_HANDLER( | |
e2023b87 | 1581 | sci_req, |
6f231dda DW |
1582 | scic_sds_request_state_handler_table, |
1583 | SCI_BASE_REQUEST_STATE_ABORTING | |
1584 | ); | |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | * scic_sds_request_final_state_enter() - | |
1589 | * @object: This parameter specifies the base object for which the state | |
9a0fff7b | 1590 | * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. |
6f231dda DW |
1591 | * |
1592 | * This method implements the actions taken when entering the | |
1593 | * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the | |
1594 | * state handlers in place. none | |
1595 | */ | |
9a0fff7b | 1596 | static void scic_sds_request_final_state_enter(void *object) |
6f231dda | 1597 | { |
890cae9b | 1598 | struct scic_sds_request *sci_req = object; |
6f231dda DW |
1599 | |
1600 | SET_STATE_HANDLER( | |
e2023b87 | 1601 | sci_req, |
6f231dda DW |
1602 | scic_sds_request_state_handler_table, |
1603 | SCI_BASE_REQUEST_STATE_FINAL | |
1604 | ); | |
1605 | } | |
1606 | ||
35173d57 | 1607 | static const struct sci_base_state scic_sds_request_state_table[] = { |
6f231dda DW |
1608 | [SCI_BASE_REQUEST_STATE_INITIAL] = { |
1609 | .enter_state = scic_sds_request_initial_state_enter, | |
1610 | }, | |
1611 | [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { | |
1612 | .enter_state = scic_sds_request_constructed_state_enter, | |
1613 | }, | |
1614 | [SCI_BASE_REQUEST_STATE_STARTED] = { | |
1615 | .enter_state = scic_sds_request_started_state_enter, | |
1616 | .exit_state = scic_sds_request_started_state_exit | |
1617 | }, | |
1618 | [SCI_BASE_REQUEST_STATE_COMPLETED] = { | |
1619 | .enter_state = scic_sds_request_completed_state_enter, | |
1620 | }, | |
1621 | [SCI_BASE_REQUEST_STATE_ABORTING] = { | |
1622 | .enter_state = scic_sds_request_aborting_state_enter, | |
1623 | }, | |
1624 | [SCI_BASE_REQUEST_STATE_FINAL] = { | |
1625 | .enter_state = scic_sds_request_final_state_enter, | |
1626 | }, | |
1627 | }; | |
1628 | ||
35173d57 DW |
1629 | static void scic_sds_general_request_construct(struct scic_sds_controller *scic, |
1630 | struct scic_sds_remote_device *sci_dev, | |
1631 | u16 io_tag, | |
1632 | void *user_io_request_object, | |
1633 | struct scic_sds_request *sci_req) | |
1634 | { | |
890cae9b | 1635 | sci_base_state_machine_construct(&sci_req->state_machine, sci_req, |
38aa74eb CH |
1636 | scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL); |
1637 | sci_base_state_machine_start(&sci_req->state_machine); | |
1638 | ||
35173d57 DW |
1639 | sci_req->io_tag = io_tag; |
1640 | sci_req->user_request = user_io_request_object; | |
1641 | sci_req->owning_controller = scic; | |
1642 | sci_req->target_device = sci_dev; | |
1643 | sci_req->has_started_substate_machine = false; | |
1644 | sci_req->protocol = SCIC_NO_PROTOCOL; | |
1645 | sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; | |
1646 | sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev); | |
1647 | ||
1648 | sci_req->sci_status = SCI_SUCCESS; | |
1649 | sci_req->scu_status = 0; | |
1650 | sci_req->post_context = 0xFFFFFFFF; | |
1651 | ||
1652 | sci_req->is_task_management_request = false; | |
1653 | ||
1654 | if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { | |
1655 | sci_req->was_tag_assigned_by_user = false; | |
1656 | sci_req->task_context_buffer = NULL; | |
1657 | } else { | |
1658 | sci_req->was_tag_assigned_by_user = true; | |
1659 | ||
1660 | sci_req->task_context_buffer = | |
1661 | scic_sds_controller_get_task_context_buffer(scic, io_tag); | |
1662 | } | |
1663 | } | |
1664 | ||
2ec53eb4 DJ |
1665 | enum sci_status |
1666 | scic_io_request_construct(struct scic_sds_controller *scic, | |
1667 | struct scic_sds_remote_device *sci_dev, | |
1668 | u16 io_tag, | |
1669 | void *user_req, | |
1670 | struct scic_sds_request *sci_req, | |
1671 | struct scic_sds_request **new_sci_req) | |
35173d57 | 1672 | { |
a1a113b0 | 1673 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
35173d57 | 1674 | enum sci_status status = SCI_SUCCESS; |
35173d57 DW |
1675 | |
1676 | /* Build the common part of the request */ | |
2ec53eb4 DJ |
1677 | scic_sds_general_request_construct(scic, |
1678 | sci_dev, | |
1679 | io_tag, | |
1680 | user_req, | |
1681 | sci_req); | |
1682 | ||
1683 | if (sci_dev->rnc.remote_node_index == | |
1684 | SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) | |
35173d57 DW |
1685 | return SCI_FAILURE_INVALID_REMOTE_DEVICE; |
1686 | ||
2ec53eb4 | 1687 | if (dev->dev_type == SAS_END_DEV) |
35173d57 | 1688 | scic_sds_ssp_io_request_assign_buffers(sci_req); |
2ec53eb4 DJ |
1689 | else if ((dev->dev_type == SATA_DEV) || |
1690 | (dev->tproto & SAS_PROTOCOL_STP)) { | |
35173d57 | 1691 | scic_sds_stp_request_assign_buffers(sci_req); |
2ec53eb4 DJ |
1692 | memset(sci_req->command_buffer, |
1693 | 0, | |
1694 | sizeof(struct host_to_dev_fis)); | |
a1a113b0 | 1695 | } else if (dev_is_expander(dev)) { |
35173d57 | 1696 | scic_sds_smp_request_assign_buffers(sci_req); |
2ec53eb4 | 1697 | memset(sci_req->command_buffer, 0, sizeof(struct smp_req)); |
a1a113b0 | 1698 | } else |
35173d57 | 1699 | status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; |
35173d57 DW |
1700 | |
1701 | if (status == SCI_SUCCESS) { | |
2ec53eb4 DJ |
1702 | memset(sci_req->task_context_buffer, |
1703 | 0, | |
1704 | SCI_FIELD_OFFSET(struct scu_task_context, sgl_pair_ab)); | |
1705 | *new_sci_req = sci_req; | |
35173d57 DW |
1706 | } |
1707 | ||
1708 | return status; | |
1709 | } | |
1710 | ||
1711 | enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, | |
1712 | struct scic_sds_remote_device *sci_dev, | |
1713 | u16 io_tag, | |
1714 | void *user_io_request_object, | |
1715 | struct scic_sds_request *sci_req, | |
1716 | struct scic_sds_request **new_sci_req) | |
1717 | { | |
a1a113b0 | 1718 | struct domain_device *dev = sci_dev_to_domain(sci_dev); |
35173d57 | 1719 | enum sci_status status = SCI_SUCCESS; |
35173d57 DW |
1720 | |
1721 | /* Build the common part of the request */ | |
1722 | scic_sds_general_request_construct(scic, sci_dev, io_tag, | |
1723 | user_io_request_object, | |
1724 | sci_req); | |
1725 | ||
a1a113b0 | 1726 | if (dev->dev_type == SAS_END_DEV) { |
35173d57 DW |
1727 | scic_sds_ssp_task_request_assign_buffers(sci_req); |
1728 | ||
1729 | sci_req->has_started_substate_machine = true; | |
1730 | ||
1731 | /* Construct the started sub-state machine. */ | |
1732 | sci_base_state_machine_construct( | |
1733 | &sci_req->started_substate_machine, | |
890cae9b | 1734 | sci_req, |
35173d57 DW |
1735 | scic_sds_io_request_started_task_mgmt_substate_table, |
1736 | SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION | |
1737 | ); | |
a1a113b0 | 1738 | } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) |
35173d57 | 1739 | scic_sds_stp_request_assign_buffers(sci_req); |
a1a113b0 | 1740 | else |
35173d57 | 1741 | status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; |
35173d57 DW |
1742 | |
1743 | if (status == SCI_SUCCESS) { | |
1744 | sci_req->is_task_management_request = true; | |
1745 | memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context)); | |
1746 | *new_sci_req = sci_req; | |
1747 | } | |
1748 | ||
1749 | return status; | |
1750 | } |