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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 | ||
56 | #ifndef _SCU_TASK_CONTEXT_H_ | |
57 | #define _SCU_TASK_CONTEXT_H_ | |
58 | ||
59 | /** | |
60 | * This file contains the structures and constants for the SCU hardware task | |
61 | * context. | |
62 | * | |
63 | * | |
64 | */ | |
65 | ||
6f231dda DW |
66 | |
67 | /** | |
de728b7d | 68 | * enum scu_ssp_task_type - This enumberation defines the various SSP task |
6f231dda DW |
69 | * types the SCU hardware will accept. The definition for the various task |
70 | * types the SCU hardware will accept can be found in the DS specification. | |
71 | * | |
72 | * | |
73 | */ | |
74 | typedef enum { | |
75 | SCU_TASK_TYPE_IOREAD, /* /< IO READ direction or no direction */ | |
76 | SCU_TASK_TYPE_IOWRITE, /* /< IO Write direction */ | |
77 | SCU_TASK_TYPE_SMP_REQUEST, /* /< SMP Request type */ | |
78 | SCU_TASK_TYPE_RESPONSE, /* /< Driver generated response frame (targt mode) */ | |
79 | SCU_TASK_TYPE_RAW_FRAME, /* /< Raw frame request type */ | |
80 | SCU_TASK_TYPE_PRIMITIVE /* /< Request for a primitive to be transmitted */ | |
de728b7d | 81 | } scu_ssp_task_type; |
6f231dda DW |
82 | |
83 | /** | |
de728b7d | 84 | * enum scu_sata_task_type - This enumeration defines the various SATA task |
6f231dda DW |
85 | * types the SCU hardware will accept. The definition for the various task |
86 | * types the SCU hardware will accept can be found in the DS specification. | |
87 | * | |
88 | * | |
89 | */ | |
90 | typedef enum { | |
91 | SCU_TASK_TYPE_DMA_IN, /* /< Read request */ | |
92 | SCU_TASK_TYPE_FPDMAQ_READ, /* /< NCQ read request */ | |
93 | SCU_TASK_TYPE_PACKET_DMA_IN, /* /< Packet read request */ | |
94 | SCU_TASK_TYPE_SATA_RAW_FRAME, /* /< Raw frame request */ | |
95 | RESERVED_4, | |
96 | RESERVED_5, | |
97 | RESERVED_6, | |
98 | RESERVED_7, | |
99 | SCU_TASK_TYPE_DMA_OUT, /* /< Write request */ | |
100 | SCU_TASK_TYPE_FPDMAQ_WRITE, /* /< NCQ write Request */ | |
101 | SCU_TASK_TYPE_PACKET_DMA_OUT /* /< Packet write request */ | |
de728b7d | 102 | } scu_sata_task_type; |
6f231dda DW |
103 | |
104 | ||
105 | /** | |
106 | * | |
107 | * | |
108 | * SCU_CONTEXT_TYPE | |
109 | */ | |
110 | #define SCU_TASK_CONTEXT_TYPE 0 | |
111 | #define SCU_RNC_CONTEXT_TYPE 1 | |
112 | ||
113 | /** | |
114 | * | |
115 | * | |
116 | * SCU_TASK_CONTEXT_VALIDITY | |
117 | */ | |
118 | #define SCU_TASK_CONTEXT_INVALID 0 | |
119 | #define SCU_TASK_CONTEXT_VALID 1 | |
120 | ||
121 | /** | |
122 | * | |
123 | * | |
124 | * SCU_COMMAND_CODE | |
125 | */ | |
126 | #define SCU_COMMAND_CODE_INITIATOR_NEW_TASK 0 | |
127 | #define SCU_COMMAND_CODE_ACTIVE_TASK 1 | |
128 | #define SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK 2 | |
129 | #define SCU_COMMAND_CODE_TARGET_RAW_FRAMES 3 | |
130 | ||
131 | /** | |
132 | * | |
133 | * | |
134 | * SCU_TASK_PRIORITY | |
135 | */ | |
136 | /** | |
137 | * | |
138 | * | |
139 | * This priority is used when there is no priority request for this request. | |
140 | */ | |
141 | #define SCU_TASK_PRIORITY_NORMAL 0 | |
142 | ||
143 | /** | |
144 | * | |
145 | * | |
146 | * This priority indicates that the task should be scheduled to the head of the | |
147 | * queue. The task will NOT be executed if the TX is suspended for the remote | |
148 | * node. | |
149 | */ | |
150 | #define SCU_TASK_PRIORITY_HEAD_OF_Q 1 | |
151 | ||
152 | /** | |
153 | * | |
154 | * | |
155 | * This priority indicates that the task will be executed before all | |
156 | * SCU_TASK_PRIORITY_NORMAL and SCU_TASK_PRIORITY_HEAD_OF_Q tasks. The task | |
157 | * WILL be executed if the TX is suspended for the remote node. | |
158 | */ | |
159 | #define SCU_TASK_PRIORITY_HIGH 2 | |
160 | ||
161 | /** | |
162 | * | |
163 | * | |
164 | * This task priority is reserved and should not be used. | |
165 | */ | |
166 | #define SCU_TASK_PRIORITY_RESERVED 3 | |
167 | ||
168 | #define SCU_TASK_INITIATOR_MODE 1 | |
169 | #define SCU_TASK_TARGET_MODE 0 | |
170 | ||
171 | #define SCU_TASK_REGULAR 0 | |
172 | #define SCU_TASK_ABORTED 1 | |
173 | ||
174 | /* direction bit defintion */ | |
175 | /** | |
176 | * | |
177 | * | |
178 | * SATA_DIRECTION | |
179 | */ | |
180 | #define SCU_SATA_WRITE_DATA_DIRECTION 0 | |
181 | #define SCU_SATA_READ_DATA_DIRECTION 1 | |
182 | ||
183 | /** | |
184 | * | |
185 | * | |
186 | * SCU_COMMAND_CONTEXT_MACROS These macros provide the mask and shift | |
187 | * operations to construct the various SCU commands | |
188 | */ | |
189 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_SHIFT 21 | |
190 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK 0x00E00000 | |
191 | #define scu_get_command_request_type(x) \ | |
192 | ((x) & SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK) | |
193 | ||
194 | #define SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_SHIFT 18 | |
195 | #define SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK 0x001C0000 | |
196 | #define scu_get_command_request_subtype(x) \ | |
197 | ((x) & SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK) | |
198 | ||
199 | #define SCU_CONTEXT_COMMAND_REQUEST_FULLTYPE_MASK \ | |
200 | (\ | |
201 | SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK \ | |
202 | | SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK \ | |
203 | ) | |
204 | #define scu_get_command_request_full_type(x) \ | |
205 | ((x) & SCU_CONTEXT_COMMAND_REQUEST_FULLTYPE_MASK) | |
206 | ||
207 | #define SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT 16 | |
208 | #define SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_MASK 0x00010000 | |
209 | #define scu_get_command_protocl_engine_group(x) \ | |
210 | ((x) & SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_MASK) | |
211 | ||
212 | #define SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT 12 | |
213 | #define SCU_CONTEXT_COMMAND_LOGICAL_PORT_MASK 0x00007000 | |
214 | #define scu_get_command_reqeust_logical_port(x) \ | |
215 | ((x) & SCU_CONTEXT_COMMAND_LOGICAL_PORT_MASK) | |
216 | ||
217 | ||
218 | #define MAKE_SCU_CONTEXT_COMMAND_TYPE(type) \ | |
219 | ((u32)(type) << SCU_CONTEXT_COMMAND_REQUEST_TYPE_SHIFT) | |
220 | ||
221 | /** | |
222 | * MAKE_SCU_CONTEXT_COMMAND_TYPE() - | |
223 | * | |
224 | * SCU_COMMAND_TYPES These constants provide the grouping of the different SCU | |
225 | * command types. | |
226 | */ | |
227 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC MAKE_SCU_CONTEXT_COMMAND_TYPE(0) | |
228 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC MAKE_SCU_CONTEXT_COMMAND_TYPE(1) | |
229 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC MAKE_SCU_CONTEXT_COMMAND_TYPE(2) | |
230 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC MAKE_SCU_CONTEXT_COMMAND_TYPE(3) | |
231 | #define SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC MAKE_SCU_CONTEXT_COMMAND_TYPE(6) | |
232 | ||
233 | #define MAKE_SCU_CONTEXT_COMMAND_REQUEST(type, command) \ | |
234 | ((type) | ((command) << SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_SHIFT)) | |
235 | ||
236 | /** | |
237 | * | |
238 | * | |
239 | * SCU_REQUEST_TYPES These constants are the various request types that can be | |
240 | * posted to the SCU hardware. | |
241 | */ | |
242 | #define SCU_CONTEXT_COMMAND_REQUST_POST_TC \ | |
243 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC, 0)) | |
244 | ||
245 | #define SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT \ | |
246 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC, 1)) | |
247 | ||
248 | #define SCU_CONTEXT_COMMAND_REQUST_DUMP_TC \ | |
249 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC, 0)) | |
250 | ||
251 | #define SCU_CONTEXT_COMMAND_POST_RNC_32 \ | |
252 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 0)) | |
253 | ||
254 | #define SCU_CONTEXT_COMMAND_POST_RNC_96 \ | |
255 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 1)) | |
256 | ||
257 | #define SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE \ | |
258 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 2)) | |
259 | ||
260 | #define SCU_CONTEXT_COMMAND_DUMP_RNC_32 \ | |
261 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC, 0)) | |
262 | ||
263 | #define SCU_CONTEXT_COMMAND_DUMP_RNC_96 \ | |
264 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC, 1)) | |
265 | ||
266 | #define SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX \ | |
267 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 0)) | |
268 | ||
269 | #define SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX \ | |
270 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 1)) | |
271 | ||
272 | #define SCU_CONTEXT_COMMAND_POST_RNC_RESUME \ | |
273 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 2)) | |
274 | ||
275 | #define SCU_CONTEXT_IT_NEXUS_LOSS_TIMER_ENABLE \ | |
276 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 3)) | |
277 | ||
278 | #define SCU_CONTEXT_IT_NEXUS_LOSS_TIMER_DISABLE \ | |
279 | (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 4)) | |
280 | ||
281 | /** | |
282 | * | |
283 | * | |
284 | * SCU_TASK_CONTEXT_PROTOCOL SCU Task context protocol types this is uesd to | |
285 | * program the SCU Task context protocol field in word 0x00. | |
286 | */ | |
287 | #define SCU_TASK_CONTEXT_PROTOCOL_SMP 0x00 | |
288 | #define SCU_TASK_CONTEXT_PROTOCOL_SSP 0x01 | |
289 | #define SCU_TASK_CONTEXT_PROTOCOL_STP 0x02 | |
290 | #define SCU_TASK_CONTEXT_PROTOCOL_NONE 0x07 | |
291 | ||
292 | /** | |
de728b7d | 293 | * struct ssp_task_context - This is the SCU hardware definition for an SSP |
6f231dda DW |
294 | * request. |
295 | * | |
296 | * | |
297 | */ | |
de728b7d | 298 | struct ssp_task_context { |
6f231dda DW |
299 | /* OFFSET 0x18 */ |
300 | u32 reserved00:24; | |
301 | u32 frame_type:8; | |
302 | ||
303 | /* OFFSET 0x1C */ | |
304 | u32 reserved01; | |
305 | ||
306 | /* OFFSET 0x20 */ | |
307 | u32 fill_bytes:2; | |
308 | u32 reserved02:6; | |
309 | u32 changing_data_pointer:1; | |
310 | u32 retransmit:1; | |
311 | u32 retry_data_frame:1; | |
312 | u32 tlr_control:2; | |
313 | u32 reserved03:19; | |
314 | ||
315 | /* OFFSET 0x24 */ | |
316 | u32 uiRsvd4; | |
317 | ||
318 | /* OFFSET 0x28 */ | |
319 | u32 target_port_transfer_tag:16; | |
320 | u32 tag:16; | |
321 | ||
322 | /* OFFSET 0x2C */ | |
323 | u32 data_offset; | |
324 | }; | |
325 | ||
326 | /** | |
de728b7d | 327 | * struct stp_task_context - This is the SCU hardware definition for an STP |
6f231dda DW |
328 | * request. |
329 | * | |
330 | * | |
331 | */ | |
de728b7d | 332 | struct stp_task_context { |
6f231dda DW |
333 | /* OFFSET 0x18 */ |
334 | u32 fis_type:8; | |
335 | u32 pm_port:4; | |
336 | u32 reserved0:3; | |
337 | u32 control:1; | |
338 | u32 command:8; | |
339 | u32 features:8; | |
340 | ||
341 | /* OFFSET 0x1C */ | |
342 | u32 reserved1; | |
343 | ||
344 | /* OFFSET 0x20 */ | |
345 | u32 reserved2; | |
346 | ||
347 | /* OFFSET 0x24 */ | |
348 | u32 reserved3; | |
349 | ||
350 | /* OFFSET 0x28 */ | |
351 | u32 ncq_tag:5; | |
352 | u32 reserved4:27; | |
353 | ||
354 | /* OFFSET 0x2C */ | |
355 | u32 data_offset; /* TODO: What is this used for? */ | |
356 | }; | |
357 | ||
358 | /** | |
de728b7d | 359 | * struct smp_task_context - This is the SCU hardware definition for an SMP |
6f231dda DW |
360 | * request. |
361 | * | |
362 | * | |
363 | */ | |
de728b7d | 364 | struct smp_task_context { |
6f231dda DW |
365 | /* OFFSET 0x18 */ |
366 | u32 response_length:8; | |
367 | u32 function_result:8; | |
368 | u32 function:8; | |
369 | u32 frame_type:8; | |
370 | ||
371 | /* OFFSET 0x1C */ | |
372 | u32 smp_response_ufi:12; | |
373 | u32 reserved1:20; | |
374 | ||
375 | /* OFFSET 0x20 */ | |
376 | u32 reserved2; | |
377 | ||
378 | /* OFFSET 0x24 */ | |
379 | u32 reserved3; | |
380 | ||
381 | /* OFFSET 0x28 */ | |
382 | u32 reserved4; | |
383 | ||
384 | /* OFFSET 0x2C */ | |
385 | u32 reserved5; | |
386 | }; | |
387 | ||
388 | /** | |
de728b7d | 389 | * struct primitive_task_context - This is the SCU hardware definition used |
6f231dda DW |
390 | * when the driver wants to send a primitive on the link. |
391 | * | |
392 | * | |
393 | */ | |
de728b7d | 394 | struct primitive_task_context { |
6f231dda DW |
395 | /* OFFSET 0x18 */ |
396 | /** | |
397 | * This field is the control word and it must be 0. | |
398 | */ | |
399 | u32 control; /* /< must be set to 0 */ | |
400 | ||
401 | /* OFFSET 0x1C */ | |
402 | /** | |
403 | * This field specifies the primitive that is to be transmitted. | |
404 | */ | |
405 | u32 sequence; | |
406 | ||
407 | /* OFFSET 0x20 */ | |
408 | u32 reserved0; | |
409 | ||
410 | /* OFFSET 0x24 */ | |
411 | u32 reserved1; | |
412 | ||
413 | /* OFFSET 0x28 */ | |
414 | u32 reserved2; | |
415 | ||
416 | /* OFFSET 0x2C */ | |
417 | u32 reserved3; | |
418 | }; | |
419 | ||
420 | /** | |
421 | * The union of the protocols that can be selected in the SCU task context | |
422 | * field. | |
423 | * | |
de728b7d | 424 | * protocol_context |
6f231dda | 425 | */ |
de728b7d DJ |
426 | union protocol_context { |
427 | struct ssp_task_context ssp; | |
428 | struct stp_task_context stp; | |
429 | struct smp_task_context smp; | |
430 | struct primitive_task_context primitive; | |
6f231dda DW |
431 | u32 words[6]; |
432 | }; | |
433 | ||
434 | /** | |
435 | * struct scu_sgl_element - This structure represents a single SCU defined SGL | |
436 | * element. SCU SGLs contain a 64 bit address with the maximum data transfer | |
437 | * being 24 bits in size. The SGL can not cross a 4GB boundary. | |
438 | * | |
439 | * struct scu_sgl_element | |
440 | */ | |
441 | struct scu_sgl_element { | |
442 | /** | |
443 | * This field is the upper 32 bits of the 64 bit physical address. | |
444 | */ | |
445 | u32 address_upper; | |
446 | ||
447 | /** | |
448 | * This field is the lower 32 bits of the 64 bit physical address. | |
449 | */ | |
450 | u32 address_lower; | |
451 | ||
452 | /** | |
453 | * This field is the number of bytes to transfer. | |
454 | */ | |
455 | u32 length:24; | |
456 | ||
457 | /** | |
458 | * This field is the address modifier to be used when a virtual function is | |
459 | * requesting a data transfer. | |
460 | */ | |
461 | u32 address_modifier:8; | |
462 | ||
463 | }; | |
464 | ||
465 | #define SCU_SGL_ELEMENT_PAIR_A 0 | |
466 | #define SCU_SGL_ELEMENT_PAIR_B 1 | |
467 | ||
468 | /** | |
469 | * struct scu_sgl_element_pair - This structure is the SCU hardware definition | |
470 | * of a pair of SGL elements. The SCU hardware always works on SGL pairs. | |
471 | * They are refered to in the DS specification as SGL A and SGL B. Each SGL | |
472 | * pair is followed by the address of the next pair. | |
473 | * | |
474 | * | |
475 | */ | |
476 | struct scu_sgl_element_pair { | |
477 | /* OFFSET 0x60-0x68 */ | |
478 | /** | |
479 | * This field is the SGL element A of the SGL pair. | |
480 | */ | |
481 | struct scu_sgl_element A; | |
482 | ||
483 | /* OFFSET 0x6C-0x74 */ | |
484 | /** | |
485 | * This field is the SGL element B of the SGL pair. | |
486 | */ | |
487 | struct scu_sgl_element B; | |
488 | ||
489 | /* OFFSET 0x78-0x7C */ | |
490 | /** | |
491 | * This field is the upper 32 bits of the 64 bit address to the next SGL | |
492 | * element pair. | |
493 | */ | |
494 | u32 next_pair_upper; | |
495 | ||
496 | /** | |
497 | * This field is the lower 32 bits of the 64 bit address to the next SGL | |
498 | * element pair. | |
499 | */ | |
500 | u32 next_pair_lower; | |
501 | ||
502 | }; | |
503 | ||
504 | /** | |
de728b7d | 505 | * struct transport_snapshot - This structure is the SCU hardware scratch area |
6f231dda DW |
506 | * for the task context. This is set to 0 by the driver but can be read by |
507 | * issuing a dump TC request to the SCU. | |
508 | * | |
509 | * | |
510 | */ | |
de728b7d | 511 | struct transport_snapshot { |
6f231dda DW |
512 | /* OFFSET 0x48 */ |
513 | u32 xfer_rdy_write_data_length; | |
514 | ||
515 | /* OFFSET 0x4C */ | |
516 | u32 data_offset; | |
517 | ||
518 | /* OFFSET 0x50 */ | |
519 | u32 data_transfer_size:24; | |
520 | u32 reserved_50_0:8; | |
521 | ||
522 | /* OFFSET 0x54 */ | |
523 | u32 next_initiator_write_data_offset; | |
524 | ||
525 | /* OFFSET 0x58 */ | |
526 | u32 next_initiator_write_data_xfer_size:24; | |
527 | u32 reserved_58_0:8; | |
528 | }; | |
529 | ||
530 | /** | |
531 | * struct scu_task_context - This structure defines the contents of the SCU | |
532 | * silicon task context. It lays out all of the fields according to the | |
533 | * expected order and location for the Storage Controller unit. | |
534 | * | |
535 | * | |
536 | */ | |
537 | struct scu_task_context { | |
538 | /* OFFSET 0x00 ------ */ | |
539 | /** | |
540 | * This field must be encoded to one of the valid SCU task priority values | |
541 | * - SCU_TASK_PRIORITY_NORMAL | |
542 | * - SCU_TASK_PRIORITY_HEAD_OF_Q | |
543 | * - SCU_TASK_PRIORITY_HIGH | |
544 | */ | |
545 | u32 priority:2; | |
546 | ||
547 | /** | |
548 | * This field must be set to true if this is an initiator generated request. | |
549 | * Until target mode is supported all task requests are initiator requests. | |
550 | */ | |
551 | u32 initiator_request:1; | |
552 | ||
553 | /** | |
554 | * This field must be set to one of the valid connection rates valid values | |
555 | * are 0x8, 0x9, and 0xA. | |
556 | */ | |
557 | u32 connection_rate:4; | |
558 | ||
559 | /** | |
560 | * This field muse be programed when generating an SMP response since the SMP | |
561 | * connection remains open until the SMP response is generated. | |
562 | */ | |
563 | u32 protocol_engine_index:3; | |
564 | ||
565 | /** | |
566 | * This field must contain the logical port for the task request. | |
567 | */ | |
568 | u32 logical_port_index:3; | |
569 | ||
570 | /** | |
571 | * This field must be set to one of the SCU_TASK_CONTEXT_PROTOCOL values | |
572 | * - SCU_TASK_CONTEXT_PROTOCOL_SMP | |
573 | * - SCU_TASK_CONTEXT_PROTOCOL_SSP | |
574 | * - SCU_TASK_CONTEXT_PROTOCOL_STP | |
575 | * - SCU_TASK_CONTEXT_PROTOCOL_NONE | |
576 | */ | |
577 | u32 protocol_type:3; | |
578 | ||
579 | /** | |
580 | * This filed must be set to the TCi allocated for this task | |
581 | */ | |
582 | u32 task_index:12; | |
583 | ||
584 | /** | |
585 | * This field is reserved and must be set to 0x00 | |
586 | */ | |
587 | u32 reserved_00_0:1; | |
588 | ||
589 | /** | |
590 | * For a normal task request this must be set to 0. If this is an abort of | |
591 | * this task request it must be set to 1. | |
592 | */ | |
593 | u32 abort:1; | |
594 | ||
595 | /** | |
596 | * This field must be set to true for the SCU hardware to process the task. | |
597 | */ | |
598 | u32 valid:1; | |
599 | ||
600 | /** | |
601 | * This field must be set to SCU_TASK_CONTEXT_TYPE | |
602 | */ | |
603 | u32 context_type:1; | |
604 | ||
605 | /* OFFSET 0x04 */ | |
606 | /** | |
607 | * This field contains the RNi that is the target of this request. | |
608 | */ | |
609 | u32 remote_node_index:12; | |
610 | ||
611 | /** | |
612 | * This field is programmed if this is a mirrored request, which we are not | |
613 | * using, in which case it is the RNi for the mirrored target. | |
614 | */ | |
615 | u32 mirrored_node_index:12; | |
616 | ||
617 | /** | |
618 | * This field is programmed with the direction of the SATA reqeust | |
619 | * - SCU_SATA_WRITE_DATA_DIRECTION | |
620 | * - SCU_SATA_READ_DATA_DIRECTION | |
621 | */ | |
622 | u32 sata_direction:1; | |
623 | ||
624 | /** | |
625 | * This field is programmsed with one of the following SCU_COMMAND_CODE | |
626 | * - SCU_COMMAND_CODE_INITIATOR_NEW_TASK | |
627 | * - SCU_COMMAND_CODE_ACTIVE_TASK | |
628 | * - SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK | |
629 | * - SCU_COMMAND_CODE_TARGET_RAW_FRAMES | |
630 | */ | |
631 | u32 command_code:2; | |
632 | ||
633 | /** | |
634 | * This field is set to true if the remote node should be suspended. | |
635 | * This bit is only valid for SSP & SMP target devices. | |
636 | */ | |
637 | u32 suspend_node:1; | |
638 | ||
639 | /** | |
640 | * This field is programmed with one of the following command type codes | |
641 | * | |
de728b7d | 642 | * For SAS requests use the scu_ssp_task_type |
6f231dda DW |
643 | * - SCU_TASK_TYPE_IOREAD |
644 | * - SCU_TASK_TYPE_IOWRITE | |
645 | * - SCU_TASK_TYPE_SMP_REQUEST | |
646 | * - SCU_TASK_TYPE_RESPONSE | |
647 | * - SCU_TASK_TYPE_RAW_FRAME | |
648 | * - SCU_TASK_TYPE_PRIMITIVE | |
649 | * | |
de728b7d | 650 | * For SATA requests use the scu_sata_task_type |
6f231dda DW |
651 | * - SCU_TASK_TYPE_DMA_IN |
652 | * - SCU_TASK_TYPE_FPDMAQ_READ | |
653 | * - SCU_TASK_TYPE_PACKET_DMA_IN | |
654 | * - SCU_TASK_TYPE_SATA_RAW_FRAME | |
655 | * - SCU_TASK_TYPE_DMA_OUT | |
656 | * - SCU_TASK_TYPE_FPDMAQ_WRITE | |
657 | * - SCU_TASK_TYPE_PACKET_DMA_OUT | |
658 | */ | |
659 | u32 task_type:4; | |
660 | ||
661 | /* OFFSET 0x08 */ | |
662 | /** | |
663 | * This field is reserved and the must be set to 0x00 | |
664 | */ | |
665 | u32 link_layer_control:8; /* presently all reserved */ | |
666 | ||
667 | /** | |
668 | * This field is set to true when TLR is to be enabled | |
669 | */ | |
670 | u32 ssp_tlr_enable:1; | |
671 | ||
672 | /** | |
673 | * This is field specifies if the SCU DMAs a response frame to host | |
674 | * memory for good response frames when operating in target mode. | |
675 | */ | |
676 | u32 dma_ssp_target_good_response:1; | |
677 | ||
678 | /** | |
679 | * This field indicates if the SCU should DMA the response frame to | |
680 | * host memory. | |
681 | */ | |
682 | u32 do_not_dma_ssp_good_response:1; | |
683 | ||
684 | /** | |
685 | * This field is set to true when strict ordering is to be enabled | |
686 | */ | |
687 | u32 strict_ordering:1; | |
688 | ||
689 | /** | |
690 | * This field indicates the type of endianess to be utilized for the | |
691 | * frame. command, task, and response frames utilized control_frame | |
692 | * set to 1. | |
693 | */ | |
694 | u32 control_frame:1; | |
695 | ||
696 | /** | |
697 | * This field is reserved and the driver should set to 0x00 | |
698 | */ | |
699 | u32 tl_control_reserved:3; | |
700 | ||
701 | /** | |
702 | * This field is set to true when the SCU hardware task timeout control is to | |
703 | * be enabled | |
704 | */ | |
705 | u32 timeout_enable:1; | |
706 | ||
707 | /** | |
708 | * This field is reserved and the driver should set it to 0x00 | |
709 | */ | |
710 | u32 pts_control_reserved:7; | |
711 | ||
712 | /** | |
713 | * This field should be set to true when block guard is to be enabled | |
714 | */ | |
715 | u32 block_guard_enable:1; | |
716 | ||
717 | /** | |
718 | * This field is reserved and the driver should set to 0x00 | |
719 | */ | |
720 | u32 sdma_control_reserved:7; | |
721 | ||
722 | /* OFFSET 0x0C */ | |
723 | /** | |
724 | * This field is the address modifier for this io request it should be | |
725 | * programmed with the virtual function that is making the request. | |
726 | */ | |
727 | u32 address_modifier:16; | |
728 | ||
729 | /** | |
730 | * @todo What we support mirrored SMP response frame? | |
731 | */ | |
732 | u32 mirrored_protocol_engine:3; /* mirrored protocol Engine Index */ | |
733 | ||
734 | /** | |
735 | * If this is a mirrored request the logical port index for the mirrored RNi | |
736 | * must be programmed. | |
737 | */ | |
738 | u32 mirrored_logical_port:4; /* mirrored local port index */ | |
739 | ||
740 | /** | |
741 | * This field is reserved and the driver must set it to 0x00 | |
742 | */ | |
743 | u32 reserved_0C_0:8; | |
744 | ||
745 | /** | |
746 | * This field must be set to true if the mirrored request processing is to be | |
747 | * enabled. | |
748 | */ | |
749 | u32 mirror_request_enable:1; /* Mirrored request Enable */ | |
750 | ||
751 | /* OFFSET 0x10 */ | |
752 | /** | |
753 | * This field is the command iu length in dwords | |
754 | */ | |
755 | u32 ssp_command_iu_length:8; | |
756 | ||
757 | /** | |
758 | * This is the target TLR enable bit it must be set to 0 when creatning the | |
759 | * task context. | |
760 | */ | |
761 | u32 xfer_ready_tlr_enable:1; | |
762 | ||
763 | /** | |
764 | * This field is reserved and the driver must set it to 0x00 | |
765 | */ | |
766 | u32 reserved_10_0:7; | |
767 | ||
768 | /** | |
769 | * This is the maximum burst size that the SCU hardware will send in one | |
770 | * connection its value is (N x 512) and N must be a multiple of 2. If the | |
771 | * value is 0x00 then maximum burst size is disabled. | |
772 | */ | |
773 | u32 ssp_max_burst_size:16; | |
774 | ||
775 | /* OFFSET 0x14 */ | |
776 | /** | |
777 | * This filed is set to the number of bytes to be transfered in the request. | |
778 | */ | |
779 | u32 transfer_length_bytes:24; /* In terms of bytes */ | |
780 | ||
781 | /** | |
782 | * This field is reserved and the driver should set it to 0x00 | |
783 | */ | |
784 | u32 reserved_14_0:8; | |
785 | ||
786 | /* OFFSET 0x18-0x2C */ | |
787 | /** | |
788 | * This union provides for the protocol specif part of the SCU Task Context. | |
789 | */ | |
de728b7d | 790 | union protocol_context type; |
6f231dda DW |
791 | |
792 | /* OFFSET 0x30-0x34 */ | |
793 | /** | |
794 | * This field is the upper 32 bits of the 64 bit physical address of the | |
795 | * command iu buffer | |
796 | */ | |
797 | u32 command_iu_upper; | |
798 | ||
799 | /** | |
800 | * This field is the lower 32 bits of the 64 bit physical address of the | |
801 | * command iu buffer | |
802 | */ | |
803 | u32 command_iu_lower; | |
804 | ||
805 | /* OFFSET 0x38-0x3C */ | |
806 | /** | |
807 | * This field is the upper 32 bits of the 64 bit physical address of the | |
808 | * response iu buffer | |
809 | */ | |
810 | u32 response_iu_upper; | |
811 | ||
812 | /** | |
813 | * This field is the lower 32 bits of the 64 bit physical address of the | |
814 | * response iu buffer | |
815 | */ | |
816 | u32 response_iu_lower; | |
817 | ||
818 | /* OFFSET 0x40 */ | |
819 | /** | |
820 | * This field is set to the task phase of the SCU hardware. The driver must | |
821 | * set this to 0x01 | |
822 | */ | |
823 | u32 task_phase:8; | |
824 | ||
825 | /** | |
826 | * This field is set to the transport layer task status. The driver must set | |
827 | * this to 0x00 | |
828 | */ | |
829 | u32 task_status:8; | |
830 | ||
831 | /** | |
832 | * This field is used during initiator write TLR | |
833 | */ | |
834 | u32 previous_extended_tag:4; | |
835 | ||
836 | /** | |
837 | * This field is set the maximum number of retries for a STP non-data FIS | |
838 | */ | |
839 | u32 stp_retry_count:2; | |
840 | ||
841 | /** | |
842 | * This field is reserved and the driver must set it to 0x00 | |
843 | */ | |
844 | u32 reserved_40_1:2; | |
845 | ||
846 | /** | |
847 | * This field is used by the SCU TL to determine when to take a snapshot when | |
848 | * tranmitting read data frames. | |
849 | * - 0x00 The entire IO | |
850 | * - 0x01 32k | |
851 | * - 0x02 64k | |
852 | * - 0x04 128k | |
853 | * - 0x08 256k | |
854 | */ | |
855 | u32 ssp_tlr_threshold:4; | |
856 | ||
857 | /** | |
858 | * This field is reserved and the driver must set it to 0x00 | |
859 | */ | |
860 | u32 reserved_40_2:4; | |
861 | ||
862 | /* OFFSET 0x44 */ | |
863 | u32 write_data_length; /* read only set to 0 */ | |
864 | ||
865 | /* OFFSET 0x48-0x58 */ | |
de728b7d | 866 | struct transport_snapshot snapshot; /* read only set to 0 */ |
6f231dda DW |
867 | |
868 | /* OFFSET 0x5C */ | |
3d2d7525 DJ |
869 | u32 blk_prot_en:1; |
870 | u32 blk_sz:2; | |
871 | u32 blk_prot_func:2; | |
6f231dda DW |
872 | u32 reserved_5C_0:9; |
873 | u32 active_sgl_element:2; /* read only set to 0 */ | |
874 | u32 sgl_exhausted:1; /* read only set to 0 */ | |
875 | u32 payload_data_transfer_error:4; /* read only set to 0 */ | |
876 | u32 frame_buffer_offset:11; /* read only set to 0 */ | |
877 | ||
878 | /* OFFSET 0x60-0x7C */ | |
879 | /** | |
880 | * This field is the first SGL element pair found in the TC data structure. | |
881 | */ | |
882 | struct scu_sgl_element_pair sgl_pair_ab; | |
883 | /* OFFSET 0x80-0x9C */ | |
884 | /** | |
885 | * This field is the second SGL element pair found in the TC data structure. | |
886 | */ | |
887 | struct scu_sgl_element_pair sgl_pair_cd; | |
888 | ||
889 | /* OFFSET 0xA0-BC */ | |
890 | struct scu_sgl_element_pair sgl_snapshot_ac; | |
891 | ||
892 | /* OFFSET 0xC0 */ | |
893 | u32 active_sgl_element_pair; /* read only set to 0 */ | |
894 | ||
895 | /* OFFSET 0xC4-0xCC */ | |
896 | u32 reserved_C4_CC[3]; | |
897 | ||
898 | /* OFFSET 0xD0 */ | |
3d2d7525 DJ |
899 | u32 interm_crc_val:16; |
900 | u32 init_crc_seed:16; | |
6f231dda DW |
901 | |
902 | /* OFFSET 0xD4 */ | |
3d2d7525 DJ |
903 | u32 app_tag_verify:16; |
904 | u32 app_tag_gen:16; | |
6f231dda DW |
905 | |
906 | /* OFFSET 0xD8 */ | |
3d2d7525 | 907 | u32 ref_tag_seed_verify; |
6f231dda DW |
908 | |
909 | /* OFFSET 0xDC */ | |
3d2d7525 DJ |
910 | u32 UD_bytes_immed_val:13; |
911 | u32 reserved_DC_0:3; | |
912 | u32 DIF_bytes_immed_val:4; | |
913 | u32 reserved_DC_1:12; | |
6f231dda DW |
914 | |
915 | /* OFFSET 0xE0 */ | |
3d2d7525 DJ |
916 | u32 bgc_blk_sz:13; |
917 | u32 reserved_E0_0:3; | |
918 | u32 app_tag_gen_mask:16; | |
6f231dda DW |
919 | |
920 | /* OFFSET 0xE4 */ | |
3d2d7525 DJ |
921 | union { |
922 | u16 bgctl; | |
923 | struct { | |
924 | u16 crc_verify:1; | |
925 | u16 app_tag_chk:1; | |
926 | u16 ref_tag_chk:1; | |
927 | u16 op:2; | |
928 | u16 legacy:1; | |
929 | u16 invert_crc_seed:1; | |
930 | u16 ref_tag_gen:1; | |
931 | u16 fixed_ref_tag:1; | |
932 | u16 invert_crc:1; | |
933 | u16 app_ref_f_detect:1; | |
934 | u16 uninit_dif_check_err:1; | |
935 | u16 uninit_dif_bypass:1; | |
936 | u16 app_f_detect:1; | |
937 | u16 reserved_0:2; | |
938 | } bgctl_f; | |
939 | }; | |
940 | ||
941 | u16 app_tag_verify_mask; | |
6f231dda DW |
942 | |
943 | /* OFFSET 0xE8 */ | |
3d2d7525 | 944 | u32 blk_guard_err:8; |
6f231dda DW |
945 | u32 reserved_E8_0:24; |
946 | ||
947 | /* OFFSET 0xEC */ | |
3d2d7525 | 948 | u32 ref_tag_seed_gen; |
6f231dda DW |
949 | |
950 | /* OFFSET 0xF0 */ | |
951 | u32 intermediate_crc_valid_snapshot:16; | |
952 | u32 reserved_F0_0:16; | |
953 | ||
954 | /* OFFSET 0xF4 */ | |
955 | u32 reference_tag_seed_for_verify_function_snapshot; | |
956 | ||
957 | /* OFFSET 0xF8 */ | |
958 | u32 snapshot_of_reserved_dword_DC_of_tc; | |
959 | ||
960 | /* OFFSET 0xFC */ | |
961 | u32 reference_tag_seed_for_generate_function_snapshot; | |
962 | ||
3d2d7525 | 963 | } __packed; |
6f231dda DW |
964 | |
965 | #endif /* _SCU_TASK_CONTEXT_H_ */ |