Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/smartpqi/smartpqi_request.c
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1 /*- 2 * Copyright 2016-2021 Microchip Technology, Inc. and/or its subsidiaries. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 /* $FreeBSD$ */ 27 28 #include "smartpqi_includes.h" 29 30 /* 31 * Attempt to perform offload RAID mapping for a logical volume I/O. 32 */ 33 34 #define HPSA_RAID_0 0 35 #define HPSA_RAID_4 1 36 #define HPSA_RAID_1 2 /* also used for RAID 10 */ 37 #define HPSA_RAID_5 3 /* also used for RAID 50 */ 38 #define HPSA_RAID_51 4 39 #define HPSA_RAID_6 5 /* also used for RAID 60 */ 40 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 41 #define HPSA_RAID_MAX HPSA_RAID_ADM 42 #define HPSA_RAID_UNKNOWN 0xff 43 44 #define SG_FLAG_LAST 0x40000000 45 #define SG_FLAG_CHAIN 0x80000000 46 47 /* Subroutine to find out embedded sgl count in IU */ 48 static inline uint32_t 49 pqisrc_embedded_sgl_count(uint32_t elem_alloted) 50 { 51 uint32_t embedded_sgl_count = MAX_EMBEDDED_SG_IN_FIRST_IU; 52 DBG_FUNC(" IN "); 53 /** 54 calculate embedded sgl count using num_elem_alloted for IO 55 **/ 56 if(elem_alloted - 1) 57 embedded_sgl_count += ((elem_alloted - 1) * MAX_EMBEDDED_SG_IN_IU); 58 DBG_IO("embedded_sgl_count :%d\n",embedded_sgl_count); 59 60 DBG_FUNC(" OUT "); 61 62 return embedded_sgl_count; 63 64 } 65 66 /* Subroutine to find out contiguous free elem in IU */ 67 static inline uint32_t 68 pqisrc_contiguous_free_elem(uint32_t pi, uint32_t ci, uint32_t elem_in_q) 69 { 70 uint32_t contiguous_free_elem = 0; 71 72 DBG_FUNC(" IN "); 73 74 if(pi >= ci) { 75 contiguous_free_elem = (elem_in_q - pi); 76 if(ci == 0) 77 contiguous_free_elem -= 1; 78 } else { 79 contiguous_free_elem = (ci - pi - 1); 80 } 81 82 DBG_FUNC(" OUT "); 83 84 return contiguous_free_elem; 85 } 86 87 /* Subroutine to find out num of elements need for the request */ 88 static uint32_t 89 pqisrc_num_elem_needed(pqisrc_softstate_t *softs, uint32_t SG_Count) 90 { 91 uint32_t num_sg; 92 uint32_t num_elem_required = 1; 93 DBG_FUNC(" IN "); 94 DBG_IO("SGL_Count :%d",SG_Count); 95 /******** 96 If SG_Count greater than max sg per IU i.e 4 or 68 97 (4 is with out spanning or 68 is with spanning) chaining is required. 98 OR, If SG_Count <= MAX_EMBEDDED_SG_IN_FIRST_IU then, 99 on these two cases one element is enough. 100 ********/ 101 if(SG_Count > softs->max_sg_per_iu || SG_Count <= MAX_EMBEDDED_SG_IN_FIRST_IU) 102 return num_elem_required; 103 /* 104 SGL Count Other Than First IU 105 */ 106 num_sg = SG_Count - MAX_EMBEDDED_SG_IN_FIRST_IU; 107 num_elem_required += PQISRC_DIV_ROUND_UP(num_sg, MAX_EMBEDDED_SG_IN_IU); 108 DBG_FUNC(" OUT "); 109 return num_elem_required; 110 } 111 112 /* Subroutine to build SG list for the IU submission*/ 113 static boolean_t 114 pqisrc_build_sgl(sgt_t *sg_array, rcb_t *rcb, iu_header_t *iu_hdr, 115 uint32_t num_elem_alloted) 116 { 117 uint32_t i; 118 uint32_t num_sg = OS_GET_IO_SG_COUNT(rcb); 119 sgt_t *sgt = sg_array; 120 sgt_t *sg_chain = NULL; 121 boolean_t partial = false; 122 123 DBG_FUNC(" IN "); 124 125 DBG_IO("SGL_Count :%d",num_sg); 126 if (0 == num_sg) { 127 goto out; 128 } 129 130 if (num_sg <= pqisrc_embedded_sgl_count(num_elem_alloted)) { 131 for (i = 0; i < num_sg; i++, sgt++) { 132 sgt->addr= OS_GET_IO_SG_ADDR(rcb,i); 133 sgt->len= OS_GET_IO_SG_LEN(rcb,i); 134 sgt->flags= 0; 135 } 136 137 sg_array[num_sg - 1].flags = SG_FLAG_LAST; 138 } else { 139 /** 140 SGL Chaining 141 **/ 142 sg_chain = rcb->sg_chain_virt; 143 sgt->addr = rcb->sg_chain_dma; 144 sgt->len = num_sg * sizeof(sgt_t); 145 sgt->flags = SG_FLAG_CHAIN; 146 147 sgt = sg_chain; 148 for (i = 0; i < num_sg; i++, sgt++) { 149 sgt->addr = OS_GET_IO_SG_ADDR(rcb,i); 150 sgt->len = OS_GET_IO_SG_LEN(rcb,i); 151 sgt->flags = 0; 152 } 153 154 sg_chain[num_sg - 1].flags = SG_FLAG_LAST; 155 num_sg = 1; 156 partial = true; 157 158 } 159 out: 160 iu_hdr->iu_length = num_sg * sizeof(sgt_t); 161 DBG_FUNC(" OUT "); 162 return partial; 163 164 } 165 166 /*Subroutine used to Build the RAID request */ 167 static void 168 pqisrc_build_raid_io(pqisrc_softstate_t *softs, rcb_t *rcb, 169 pqisrc_raid_req_t *raid_req, uint32_t num_elem_alloted) 170 { 171 DBG_FUNC(" IN "); 172 173 raid_req->header.iu_type = PQI_IU_TYPE_RAID_PATH_IO_REQUEST; 174 raid_req->header.comp_feature = 0; 175 raid_req->response_queue_id = OS_GET_IO_RESP_QID(softs, rcb); 176 raid_req->work_area[0] = 0; 177 raid_req->work_area[1] = 0; 178 raid_req->request_id = rcb->tag; 179 raid_req->nexus_id = 0; 180 raid_req->buffer_length = GET_SCSI_BUFFLEN(rcb); 181 memcpy(raid_req->lun_number, rcb->dvp->scsi3addr, 182 sizeof(raid_req->lun_number)); 183 raid_req->protocol_spec = 0; 184 raid_req->data_direction = rcb->data_dir; 185 raid_req->reserved1 = 0; 186 raid_req->fence = 0; 187 raid_req->error_index = raid_req->request_id; 188 raid_req->reserved2 = 0; 189 raid_req->task_attribute = OS_GET_TASK_ATTR(rcb); 190 raid_req->command_priority = 0; 191 raid_req->reserved3 = 0; 192 raid_req->reserved4 = 0; 193 raid_req->reserved5 = 0; 194 195 /* As cdb and additional_cdb_bytes are contiguous, 196 update them in a single statement */ 197 memcpy(raid_req->cdb, rcb->cdbp, rcb->cmdlen); 198 #if 0 199 DBG_IO("CDB :"); 200 for(i = 0; i < rcb->cmdlen ; i++) 201 DBG_IO(" 0x%x \n ",raid_req->cdb[i]); 202 #endif 203 204 switch (rcb->cmdlen) { 205 case 6: 206 case 10: 207 case 12: 208 case 16: 209 raid_req->additional_cdb_bytes_usage = 210 PQI_ADDITIONAL_CDB_BYTES_0; 211 break; 212 case 20: 213 raid_req->additional_cdb_bytes_usage = 214 PQI_ADDITIONAL_CDB_BYTES_4; 215 break; 216 case 24: 217 raid_req->additional_cdb_bytes_usage = 218 PQI_ADDITIONAL_CDB_BYTES_8; 219 break; 220 case 28: 221 raid_req->additional_cdb_bytes_usage = 222 PQI_ADDITIONAL_CDB_BYTES_12; 223 break; 224 case 32: 225 default: /* todo:review again */ 226 raid_req->additional_cdb_bytes_usage = 227 PQI_ADDITIONAL_CDB_BYTES_16; 228 break; 229 } 230 231 /* Frame SGL Descriptor */ 232 raid_req->partial = pqisrc_build_sgl(&raid_req->sg_descriptors[0], rcb, 233 &raid_req->header, num_elem_alloted); 234 235 raid_req->header.iu_length += 236 offsetof(pqisrc_raid_req_t, sg_descriptors) - sizeof(iu_header_t); 237 238 #if 0 239 DBG_IO("raid_req->header.iu_type : 0x%x", raid_req->header.iu_type); 240 DBG_IO("raid_req->response_queue_id :%d\n"raid_req->response_queue_id); 241 DBG_IO("raid_req->request_id : 0x%x", raid_req->request_id); 242 DBG_IO("raid_req->buffer_length : 0x%x", raid_req->buffer_length); 243 DBG_IO("raid_req->task_attribute : 0x%x", raid_req->task_attribute); 244 DBG_IO("raid_req->lun_number : 0x%x", raid_req->lun_number); 245 DBG_IO("raid_req->error_index : 0x%x", raid_req->error_index); 246 DBG_IO("raid_req->sg_descriptors[0].addr : %p", (void*)raid_req->sg_descriptors[0].addr); 247 DBG_IO("raid_req->sg_descriptors[0].len : 0x%x", raid_req->sg_descriptors[0].len); 248 DBG_IO("raid_req->sg_descriptors[0].flags : 0%x", raid_req->sg_descriptors[0].flags); 249 #endif 250 rcb->success_cmp_callback = pqisrc_process_io_response_success; 251 rcb->error_cmp_callback = pqisrc_process_raid_response_error; 252 rcb->resp_qid = raid_req->response_queue_id; 253 254 DBG_FUNC(" OUT "); 255 256 } 257 258 /*Subroutine used to Build the AIO request */ 259 static void 260 pqisrc_build_aio_io(pqisrc_softstate_t *softs, rcb_t *rcb, 261 pqi_aio_req_t *aio_req, uint32_t num_elem_alloted) 262 { 263 DBG_FUNC(" IN "); 264 265 aio_req->header.iu_type = PQI_IU_TYPE_AIO_PATH_IO_REQUEST; 266 aio_req->header.comp_feature = 0; 267 aio_req->response_queue_id = OS_GET_IO_RESP_QID(softs, rcb); 268 aio_req->work_area[0] = 0; 269 aio_req->work_area[1] = 0; 270 aio_req->req_id = rcb->tag; 271 aio_req->res1[0] = 0; 272 aio_req->res1[1] = 0; 273 aio_req->nexus = rcb->ioaccel_handle; 274 aio_req->buf_len = GET_SCSI_BUFFLEN(rcb); 275 aio_req->data_dir = rcb->data_dir; 276 aio_req->mem_type = 0; 277 aio_req->fence = 0; 278 aio_req->res2 = 0; 279 aio_req->task_attr = OS_GET_TASK_ATTR(rcb); 280 aio_req->cmd_prio = 0; 281 aio_req->res3 = 0; 282 aio_req->err_idx = aio_req->req_id; 283 aio_req->cdb_len = rcb->cmdlen; 284 285 if(rcb->cmdlen > sizeof(aio_req->cdb)) 286 rcb->cmdlen = sizeof(aio_req->cdb); 287 memcpy(aio_req->cdb, rcb->cdbp, rcb->cmdlen); 288 #if 0 289 DBG_IO("CDB : \n"); 290 for(int i = 0; i < rcb->cmdlen ; i++) 291 DBG_IO(" 0x%x \n",aio_req->cdb[i]); 292 #endif 293 memset(aio_req->lun,0,sizeof(aio_req->lun)); 294 memset(aio_req->res4,0,sizeof(aio_req->res4)); 295 296 if(rcb->encrypt_enable == true) { 297 aio_req->encrypt_enable = true; 298 aio_req->encrypt_key_index = LE_16(rcb->enc_info.data_enc_key_index); 299 aio_req->encrypt_twk_low = LE_32(rcb->enc_info.encrypt_tweak_lower); 300 aio_req->encrypt_twk_high = LE_32(rcb->enc_info.encrypt_tweak_upper); 301 } else { 302 aio_req->encrypt_enable = 0; 303 aio_req->encrypt_key_index = 0; 304 aio_req->encrypt_twk_high = 0; 305 aio_req->encrypt_twk_low = 0; 306 } 307 308 /* Frame SGL Descriptor */ 309 aio_req->partial = pqisrc_build_sgl(&aio_req->sg_desc[0], rcb, 310 &aio_req->header, num_elem_alloted); 311 312 aio_req->num_sg = aio_req->header.iu_length / sizeof(sgt_t); 313 314 DBG_INFO("aio_req->num_sg :%d",aio_req->num_sg); 315 316 aio_req->header.iu_length += offsetof(pqi_aio_req_t, sg_desc) - 317 sizeof(iu_header_t); 318 #if 0 319 DBG_IO("aio_req->header.iu_type : 0x%x \n",aio_req->header.iu_type); 320 DBG_IO("aio_req->resp_qid :0x%x",aio_req->resp_qid); 321 DBG_IO("aio_req->req_id : 0x%x \n",aio_req->req_id); 322 DBG_IO("aio_req->nexus : 0x%x \n",aio_req->nexus); 323 DBG_IO("aio_req->buf_len : 0x%x \n",aio_req->buf_len); 324 DBG_IO("aio_req->data_dir : 0x%x \n",aio_req->data_dir); 325 DBG_IO("aio_req->task_attr : 0x%x \n",aio_req->task_attr); 326 DBG_IO("aio_req->err_idx : 0x%x \n",aio_req->err_idx); 327 DBG_IO("aio_req->num_sg :%d",aio_req->num_sg); 328 DBG_IO("aio_req->sg_desc[0].addr : %p \n", (void*)aio_req->sg_desc[0].addr); 329 DBG_IO("aio_req->sg_desc[0].len : 0%x \n", aio_req->sg_desc[0].len); 330 DBG_IO("aio_req->sg_desc[0].flags : 0%x \n", aio_req->sg_desc[0].flags); 331 #endif 332 333 rcb->success_cmp_callback = pqisrc_process_io_response_success; 334 rcb->error_cmp_callback = pqisrc_process_aio_response_error; 335 rcb->resp_qid = aio_req->response_queue_id; 336 337 DBG_FUNC(" OUT "); 338 339 } 340 341 /*Function used to build and send RAID/AIO */ 342 int 343 pqisrc_build_send_io(pqisrc_softstate_t *softs,rcb_t *rcb) 344 { 345 ib_queue_t *ib_q_array = softs->op_aio_ib_q; 346 ib_queue_t *ib_q = NULL; 347 char *ib_iu = NULL; 348 IO_PATH_T io_path = AIO_PATH; 349 uint32_t TraverseCount = 0; 350 int first_qindex = OS_GET_IO_REQ_QINDEX(softs, rcb); 351 int qindex = first_qindex; 352 uint32_t num_op_ib_q = softs->num_op_aio_ibq; 353 uint32_t num_elem_needed; 354 uint32_t num_elem_alloted = 0; 355 pqi_scsi_dev_t *devp = rcb->dvp; 356 uint8_t raidbypass_cdb[16]; 357 358 DBG_FUNC(" IN "); 359 360 if(!rcb->aio_retry) { 361 rcb->cdbp = OS_GET_CDBP(rcb); 362 if(IS_AIO_PATH(devp)) { 363 /** IO for Physical Drive **/ 364 /** Send in AIO PATH**/ 365 rcb->ioaccel_handle = devp->ioaccel_handle; 366 } else { 367 int ret = PQI_STATUS_FAILURE; 368 /** IO for RAID Volume **/ 369 if (devp->offload_enabled) { 370 /** ByPass IO ,Send in AIO PATH **/ 371 ret = pqisrc_send_scsi_cmd_raidbypass(softs, 372 devp, rcb, raidbypass_cdb); 373 } 374 if (PQI_STATUS_FAILURE == ret) { 375 /** Send in RAID PATH **/ 376 io_path = RAID_PATH; 377 num_op_ib_q = softs->num_op_raid_ibq; 378 ib_q_array = softs->op_raid_ib_q; 379 } else { 380 rcb->cdbp = raidbypass_cdb; 381 } 382 } 383 } else { 384 /* Retrying failed AIO IO */ 385 io_path = RAID_PATH; 386 rcb->cdbp = OS_GET_CDBP(rcb); 387 num_op_ib_q = softs->num_op_raid_ibq; 388 ib_q_array = softs->op_raid_ib_q; 389 } 390 391 num_elem_needed = pqisrc_num_elem_needed(softs, OS_GET_IO_SG_COUNT(rcb)); 392 DBG_IO("num_elem_needed :%d",num_elem_needed); 393 394 do { 395 uint32_t num_elem_available; 396 ib_q = (ib_q_array + qindex); 397 PQI_LOCK(&ib_q->lock); 398 num_elem_available = pqisrc_contiguous_free_elem(ib_q->pi_local, 399 *(ib_q->ci_virt_addr), ib_q->num_elem); 400 401 DBG_IO("num_elem_avialable :%d\n",num_elem_available); 402 if(num_elem_available >= num_elem_needed) { 403 num_elem_alloted = num_elem_needed; 404 break; 405 } 406 DBG_IO("Current queue is busy! Hop to next queue\n"); 407 408 PQI_UNLOCK(&ib_q->lock); 409 qindex = (qindex + 1) % num_op_ib_q; 410 if(qindex == first_qindex) { 411 if (num_elem_needed == 1) 412 break; 413 TraverseCount += 1; 414 num_elem_needed = 1; 415 } 416 }while(TraverseCount < 2); 417 418 DBG_IO("num_elem_alloted :%d",num_elem_alloted); 419 if (num_elem_alloted == 0) { 420 DBG_WARN("OUT: IB Queues were full\n"); 421 return PQI_STATUS_QFULL; 422 } 423 424 pqisrc_increment_device_active_io(softs,devp); 425 426 /* Get IB Queue Slot address to build IU */ 427 ib_iu = ib_q->array_virt_addr + (ib_q->pi_local * ib_q->elem_size); 428 429 if(io_path == AIO_PATH) { 430 /** Build AIO structure **/ 431 pqisrc_build_aio_io(softs, rcb, (pqi_aio_req_t*)ib_iu, 432 num_elem_alloted); 433 } else { 434 /** Build RAID structure **/ 435 pqisrc_build_raid_io(softs, rcb, (pqisrc_raid_req_t*)ib_iu, 436 num_elem_alloted); 437 } 438 439 rcb->req_pending = true; 440 rcb->req_q = ib_q; 441 rcb->path = io_path; 442 443 /* Update the local PI */ 444 ib_q->pi_local = (ib_q->pi_local + num_elem_alloted) % ib_q->num_elem; 445 446 DBG_INFO("ib_q->pi_local : %x\n", ib_q->pi_local); 447 DBG_INFO("*ib_q->ci_virt_addr: %x\n",*(ib_q->ci_virt_addr)); 448 449 /* Inform the fw about the new IU */ 450 PCI_MEM_PUT32(softs, ib_q->pi_register_abs, ib_q->pi_register_offset, ib_q->pi_local); 451 452 PQI_UNLOCK(&ib_q->lock); 453 DBG_FUNC(" OUT "); 454 return PQI_STATUS_SUCCESS; 455 } 456 457 /* Subroutine used to set encryption info as part of RAID bypass IO*/ 458 static inline void 459 pqisrc_set_enc_info(struct pqi_enc_info *enc_info, 460 struct raid_map *raid_map, uint64_t first_block) 461 { 462 uint32_t volume_blk_size; 463 464 /* 465 * Set the encryption tweak values based on logical block address. 466 * If the block size is 512, the tweak value is equal to the LBA. 467 * For other block sizes, tweak value is (LBA * block size) / 512. 468 */ 469 volume_blk_size = GET_LE32((uint8_t *)&raid_map->volume_blk_size); 470 if (volume_blk_size != 512) 471 first_block = (first_block * volume_blk_size) / 512; 472 473 enc_info->data_enc_key_index = 474 GET_LE16((uint8_t *)&raid_map->data_encryption_key_index); 475 enc_info->encrypt_tweak_upper = ((uint32_t)(((first_block) >> 16) >> 16)); 476 enc_info->encrypt_tweak_lower = ((uint32_t)(first_block)); 477 } 478 479 /* Subroutine used to parse the scsi opcode and build the CDB for RAID bypass*/ 480 int 481 check_for_scsi_opcode(uint8_t *cdb, boolean_t *is_write, uint64_t *fst_blk, 482 uint32_t *blk_cnt) 483 { 484 485 switch (cdb[0]) { 486 case SCMD_WRITE_6: 487 *is_write = true; 488 case SCMD_READ_6: 489 *fst_blk = (uint64_t)(((cdb[1] & 0x1F) << 16) | 490 (cdb[2] << 8) | cdb[3]); 491 *blk_cnt = (uint32_t)cdb[4]; 492 if (*blk_cnt == 0) 493 *blk_cnt = 256; 494 break; 495 case SCMD_WRITE_10: 496 *is_write = true; 497 case SCMD_READ_10: 498 *fst_blk = (uint64_t)GET_BE32(&cdb[2]); 499 *blk_cnt = (uint32_t)GET_BE16(&cdb[7]); 500 break; 501 case SCMD_WRITE_12: 502 *is_write = true; 503 case SCMD_READ_12: 504 *fst_blk = (uint64_t)GET_BE32(&cdb[2]); 505 *blk_cnt = GET_BE32(&cdb[6]); 506 break; 507 case SCMD_WRITE_16: 508 *is_write = true; 509 case SCMD_READ_16: 510 *fst_blk = GET_BE64(&cdb[2]); 511 *blk_cnt = GET_BE32(&cdb[10]); 512 break; 513 default: 514 /* Process via normal I/O path. */ 515 return PQI_STATUS_FAILURE; 516 } 517 return PQI_STATUS_SUCCESS; 518 } 519 520 /* print any arbitrary buffer of length total_len */ 521 void 522 pqisrc_print_buffer(pqisrc_softstate_t *softs, char *msg, void *user_buf, 523 uint32_t total_len, uint32_t flags) 524 { 525 #define LINE_BUF_LEN 60 526 #define INDEX_PER_LINE 16 527 uint32_t buf_consumed = 0; 528 int ii; 529 char line_buf[LINE_BUF_LEN]; 530 int line_len; /* written length per line */ 531 uint8_t this_char; 532 533 if (user_buf == NULL) 534 return; 535 536 /* Print index columns */ 537 if (flags & PRINT_FLAG_HDR_COLUMN) 538 { 539 for (ii = 0, line_len = 0; ii < MIN(total_len, 16); ii++) 540 { 541 line_len += snprintf(line_buf + line_len, (LINE_BUF_LEN - line_len), "%02d ", ii); 542 if ((line_len + 4) >= LINE_BUF_LEN) 543 break; 544 } 545 DBG_NOTE("%15.15s:[ %s ]\n", "header", line_buf); 546 } 547 548 /* Print index columns */ 549 while(buf_consumed < total_len) 550 { 551 memset(line_buf, 0, LINE_BUF_LEN); 552 553 for (ii = 0, line_len = 0; ii < INDEX_PER_LINE; ii++) 554 { 555 this_char = *((char*)(user_buf) + buf_consumed); 556 line_len += snprintf(line_buf + line_len, (LINE_BUF_LEN - line_len), "%02x ", this_char); 557 558 buf_consumed++; 559 if (buf_consumed >= total_len || (line_len + 4) >= LINE_BUF_LEN) 560 break; 561 } 562 DBG_NOTE("%15.15s:[ %s ]\n", msg, line_buf); 563 } 564 } 565 566 567 /* 568 * Function used to build and send RAID bypass request to the adapter 569 */ 570 int 571 pqisrc_send_scsi_cmd_raidbypass(pqisrc_softstate_t *softs, 572 pqi_scsi_dev_t *device, rcb_t *rcb, uint8_t *cdb) 573 { 574 struct raid_map *raid_map; 575 boolean_t is_write = false; 576 uint32_t map_idx; 577 uint64_t fst_blk, lst_blk; 578 uint32_t blk_cnt, blks_per_row; 579 uint64_t fst_row, lst_row; 580 uint32_t fst_row_offset, lst_row_offset; 581 uint32_t fst_col, lst_col; 582 uint32_t r5or6_blks_per_row; 583 uint64_t r5or6_fst_row, r5or6_lst_row; 584 uint32_t r5or6_fst_row_offset, r5or6_lst_row_offset; 585 uint32_t r5or6_fst_col, r5or6_lst_col; 586 uint16_t data_disks_per_row, total_disks_per_row; 587 uint16_t layout_map_count; 588 uint32_t stripesz; 589 uint16_t strip_sz; 590 uint32_t fst_grp, lst_grp, cur_grp; 591 uint32_t map_row; 592 uint64_t disk_block; 593 uint32_t disk_blk_cnt; 594 uint8_t cdb_length; 595 int offload_to_mirror; 596 int i; 597 DBG_FUNC(" IN \n"); 598 DBG_IO("!!!!!\n"); 599 600 /* Check for eligible opcode, get LBA and block count. */ 601 memcpy(cdb, OS_GET_CDBP(rcb), rcb->cmdlen); 602 603 for(i = 0; i < rcb->cmdlen ; i++) 604 DBG_IO(" CDB [ %d ] : %x\n",i,cdb[i]); 605 if(check_for_scsi_opcode(cdb, &is_write, 606 &fst_blk, &blk_cnt) == PQI_STATUS_FAILURE) 607 return PQI_STATUS_FAILURE; 608 /* Check for write to non-RAID-0. */ 609 if (is_write && device->raid_level != SA_RAID_0) 610 return PQI_STATUS_FAILURE; 611 612 if(blk_cnt == 0) 613 return PQI_STATUS_FAILURE; 614 615 lst_blk = fst_blk + blk_cnt - 1; 616 raid_map = device->raid_map; 617 618 /* Check for invalid block or wraparound. */ 619 if (lst_blk >= GET_LE64((uint8_t *)&raid_map->volume_blk_cnt) || 620 lst_blk < fst_blk) 621 return PQI_STATUS_FAILURE; 622 623 data_disks_per_row = GET_LE16((uint8_t *)&raid_map->data_disks_per_row); 624 strip_sz = GET_LE16((uint8_t *)(&raid_map->strip_size)); 625 layout_map_count = GET_LE16((uint8_t *)(&raid_map->layout_map_count)); 626 627 /* Calculate stripe information for the request. */ 628 blks_per_row = data_disks_per_row * strip_sz; 629 if (!blks_per_row) 630 return PQI_STATUS_FAILURE; /*Send the IO in raid path itself, not AIO or raidbypass*/ 631 632 /* use __udivdi3 ? */ 633 fst_row = fst_blk / blks_per_row; 634 lst_row = lst_blk / blks_per_row; 635 fst_row_offset = (uint32_t)(fst_blk - (fst_row * blks_per_row)); 636 lst_row_offset = (uint32_t)(lst_blk - (lst_row * blks_per_row)); 637 fst_col = fst_row_offset / strip_sz; 638 lst_col = lst_row_offset / strip_sz; 639 640 /* If this isn't a single row/column then give to the controller. */ 641 if (fst_row != lst_row || fst_col != lst_col) 642 return PQI_STATUS_FAILURE; 643 644 /* Proceeding with driver mapping. */ 645 total_disks_per_row = data_disks_per_row + 646 GET_LE16((uint8_t *)(&raid_map->metadata_disks_per_row)); 647 map_row = ((uint32_t)(fst_row >> raid_map->parity_rotation_shift)) % 648 GET_LE16((uint8_t *)(&raid_map->row_cnt)); 649 map_idx = (map_row * total_disks_per_row) + fst_col; 650 651 /* RAID 1 */ 652 if (device->raid_level == SA_RAID_1) { 653 if (device->offload_to_mirror) 654 map_idx += data_disks_per_row; 655 device->offload_to_mirror = !device->offload_to_mirror; 656 } else if (device->raid_level == SA_RAID_ADM) { 657 /* RAID ADM */ 658 /* 659 * Handles N-way mirrors (R1-ADM) and R10 with # of drives 660 * divisible by 3. 661 */ 662 offload_to_mirror = device->offload_to_mirror; 663 if (offload_to_mirror == 0) { 664 /* use physical disk in the first mirrored group. */ 665 map_idx %= data_disks_per_row; 666 } else { 667 do { 668 /* 669 * Determine mirror group that map_idx 670 * indicates. 671 */ 672 cur_grp = map_idx / data_disks_per_row; 673 674 if (offload_to_mirror != cur_grp) { 675 if (cur_grp < 676 layout_map_count - 1) { 677 /* 678 * Select raid index from 679 * next group. 680 */ 681 map_idx += data_disks_per_row; 682 cur_grp++; 683 } else { 684 /* 685 * Select raid index from first 686 * group. 687 */ 688 map_idx %= data_disks_per_row; 689 cur_grp = 0; 690 } 691 } 692 } while (offload_to_mirror != cur_grp); 693 } 694 695 /* Set mirror group to use next time. */ 696 offload_to_mirror = 697 (offload_to_mirror >= layout_map_count - 1) ? 698 0 : offload_to_mirror + 1; 699 if(offload_to_mirror >= layout_map_count) 700 return PQI_STATUS_FAILURE; 701 702 device->offload_to_mirror = offload_to_mirror; 703 /* 704 * Avoid direct use of device->offload_to_mirror within this 705 * function since multiple threads might simultaneously 706 * increment it beyond the range of device->layout_map_count -1. 707 */ 708 } else if ((device->raid_level == SA_RAID_5 || 709 device->raid_level == SA_RAID_6) && layout_map_count > 1) { 710 /* RAID 50/60 */ 711 /* Verify first and last block are in same RAID group */ 712 r5or6_blks_per_row = strip_sz * data_disks_per_row; 713 stripesz = r5or6_blks_per_row * layout_map_count; 714 715 fst_grp = (fst_blk % stripesz) / r5or6_blks_per_row; 716 lst_grp = (lst_blk % stripesz) / r5or6_blks_per_row; 717 718 if (fst_grp != lst_grp) 719 return PQI_STATUS_FAILURE; 720 721 /* Verify request is in a single row of RAID 5/6 */ 722 fst_row = r5or6_fst_row = 723 fst_blk / stripesz; 724 r5or6_lst_row = lst_blk / stripesz; 725 726 if (r5or6_fst_row != r5or6_lst_row) 727 return PQI_STATUS_FAILURE; 728 729 /* Verify request is in a single column */ 730 fst_row_offset = r5or6_fst_row_offset = 731 (uint32_t)((fst_blk % stripesz) % 732 r5or6_blks_per_row); 733 734 r5or6_lst_row_offset = 735 (uint32_t)((lst_blk % stripesz) % 736 r5or6_blks_per_row); 737 738 fst_col = r5or6_fst_row_offset / strip_sz; 739 r5or6_fst_col = fst_col; 740 r5or6_lst_col = r5or6_lst_row_offset / strip_sz; 741 742 if (r5or6_fst_col != r5or6_lst_col) 743 return PQI_STATUS_FAILURE; 744 745 /* Request is eligible */ 746 map_row = 747 ((uint32_t)(fst_row >> raid_map->parity_rotation_shift)) % 748 GET_LE16((uint8_t *)(&raid_map->row_cnt)); 749 750 map_idx = (fst_grp * 751 (GET_LE16((uint8_t *)(&raid_map->row_cnt)) * 752 total_disks_per_row)) + 753 (map_row * total_disks_per_row) + fst_col; 754 } 755 756 rcb->ioaccel_handle = raid_map->dev_data[map_idx].ioaccel_handle; 757 disk_block = GET_LE64((uint8_t *)(&raid_map->disk_starting_blk)) + 758 fst_row * strip_sz + 759 (fst_row_offset - fst_col * strip_sz); 760 disk_blk_cnt = blk_cnt; 761 762 /* Handle differing logical/physical block sizes. */ 763 if (raid_map->phys_blk_shift) { 764 disk_block <<= raid_map->phys_blk_shift; 765 disk_blk_cnt <<= raid_map->phys_blk_shift; 766 } 767 768 if (disk_blk_cnt > 0xffff) 769 return PQI_STATUS_FAILURE; 770 771 /* Build the new CDB for the physical disk I/O. */ 772 if (disk_block > 0xffffffff) { 773 cdb[0] = is_write ? SCMD_WRITE_16 : SCMD_READ_16; 774 cdb[1] = 0; 775 PUT_BE64(disk_block, &cdb[2]); 776 PUT_BE32(disk_blk_cnt, &cdb[10]); 777 cdb[14] = 0; 778 cdb[15] = 0; 779 cdb_length = 16; 780 } else { 781 cdb[0] = is_write ? SCMD_WRITE_10 : SCMD_READ_10; 782 cdb[1] = 0; 783 PUT_BE32(disk_block, &cdb[2]); 784 cdb[6] = 0; 785 PUT_BE16(disk_blk_cnt, &cdb[7]); 786 cdb[9] = 0; 787 cdb_length = 10; 788 } 789 790 if (GET_LE16((uint8_t *)(&raid_map->flags)) & 791 RAID_MAP_ENCRYPTION_ENABLED) { 792 pqisrc_set_enc_info(&rcb->enc_info, raid_map, 793 fst_blk); 794 rcb->encrypt_enable = true; 795 } else { 796 rcb->encrypt_enable = false; 797 } 798 799 rcb->cmdlen = cdb_length; 800 801 802 DBG_FUNC("OUT"); 803 804 return PQI_STATUS_SUCCESS; 805 } 806 807 /* Function used to submit an AIO TMF to the adapter 808 * DEVICE_RESET is not supported. 809 */ 810 static int 811 pqisrc_send_aio_tmf(pqisrc_softstate_t *softs, pqi_scsi_dev_t *devp, 812 rcb_t *rcb, rcb_t *rcb_to_manage, int tmf_type) 813 { 814 int rval = PQI_STATUS_SUCCESS; 815 pqi_aio_tmf_req_t tmf_req; 816 ib_queue_t *op_ib_q = NULL; 817 818 memset(&tmf_req, 0, sizeof(pqi_aio_tmf_req_t)); 819 820 DBG_FUNC("IN"); 821 822 tmf_req.header.iu_type = PQI_REQUEST_IU_AIO_TASK_MANAGEMENT; 823 tmf_req.header.iu_length = sizeof(tmf_req) - sizeof(iu_header_t); 824 tmf_req.req_id = rcb->tag; 825 tmf_req.error_idx = rcb->tag; 826 tmf_req.nexus = devp->ioaccel_handle; 827 //memcpy(tmf_req.lun, devp->scsi3addr, sizeof(tmf_req.lun)); 828 tmf_req.tmf = tmf_type; 829 tmf_req.resp_qid = OS_GET_TMF_RESP_QID(softs, rcb); 830 op_ib_q = &softs->op_aio_ib_q[0]; 831 832 if (tmf_type == SOP_TASK_MANAGEMENT_FUNCTION_ABORT_TASK) { 833 tmf_req.req_id_to_manage = rcb_to_manage->tag; 834 tmf_req.nexus = rcb_to_manage->ioaccel_handle; 835 } 836 837 DBG_INFO("tmf_req.header.iu_type : %x tmf_req.req_id_to_manage :%d \n",tmf_req.header.iu_type,tmf_req.req_id_to_manage); 838 DBG_INFO("tmf_req.req_id : %d tmf_req.nexus : %x tmf_req.tmf %x QID : %d\n",tmf_req.req_id,tmf_req.nexus,tmf_req.tmf,op_ib_q->q_id); 839 840 DBG_WARN("aio tmf: iu_type=0x%x req_id_to_manage=0x%x\n", 841 tmf_req.header.iu_type, tmf_req.req_id_to_manage); 842 DBG_WARN("aio tmf: req_id=0x%x nexus=0x%x tmf=0x%x QID=%d\n", 843 tmf_req.req_id, tmf_req.nexus, tmf_req.tmf, op_ib_q->q_id); 844 845 rcb->path = AIO_PATH; 846 rcb->req_pending = true; 847 /* Timedout tmf response goes here */ 848 rcb->error_cmp_callback = pqisrc_process_aio_response_error; 849 850 rval = pqisrc_submit_cmnd(softs, op_ib_q, &tmf_req); 851 if (rval != PQI_STATUS_SUCCESS) { 852 DBG_ERR("Unable to submit command rval=%d\n", rval); 853 return rval; 854 } 855 856 rval = pqisrc_wait_on_condition(softs, rcb, PQISRC_TMF_TIMEOUT); 857 if (rval != PQI_STATUS_SUCCESS){ 858 DBG_ERR("Task Management tmf_type : %d timeout\n", tmf_type); 859 rcb->status = rval; 860 } 861 862 if (rcb->status != REQUEST_SUCCESS) { 863 DBG_ERR_BTL(devp, "Task Management failed tmf_type:%d " 864 "stat:0x%x\n", tmf_type, rcb->status); 865 rval = PQI_STATUS_FAILURE; 866 } 867 868 DBG_FUNC("OUT"); 869 return rval; 870 } 871 872 /* Function used to submit a Raid TMF to the adapter */ 873 static int 874 pqisrc_send_raid_tmf(pqisrc_softstate_t *softs, pqi_scsi_dev_t *devp, 875 rcb_t *rcb, rcb_t *rcb_to_manage, int tmf_type) 876 { 877 int rval = PQI_STATUS_SUCCESS; 878 pqi_raid_tmf_req_t tmf_req; 879 ib_queue_t *op_ib_q = NULL; 880 881 memset(&tmf_req, 0, sizeof(pqi_raid_tmf_req_t)); 882 883 DBG_FUNC("IN"); 884 885 tmf_req.header.iu_type = PQI_REQUEST_IU_RAID_TASK_MANAGEMENT; 886 tmf_req.header.iu_length = sizeof(tmf_req) - sizeof(iu_header_t); 887 tmf_req.req_id = rcb->tag; 888 889 memcpy(tmf_req.lun, devp->scsi3addr, sizeof(tmf_req.lun)); 890 tmf_req.tmf = tmf_type; 891 tmf_req.resp_qid = OS_GET_TMF_RESP_QID(softs, rcb); 892 893 /* Decide the queue where the tmf request should be submitted */ 894 if (tmf_type == SOP_TASK_MANAGEMENT_FUNCTION_ABORT_TASK) { 895 tmf_req.obq_id_to_manage = rcb_to_manage->resp_qid; 896 tmf_req.req_id_to_manage = rcb_to_manage->tag; 897 } 898 899 if (softs->timeout_in_tmf && 900 tmf_type == SOP_TASK_MANAGEMENT_LUN_RESET) { 901 /* OS_TMF_TIMEOUT_SEC - 1 to accommodate driver processing */ 902 tmf_req.timeout_in_sec = OS_TMF_TIMEOUT_SEC - 1; 903 /* if OS tmf timeout is 0, set minimum value for timeout */ 904 if (!tmf_req.timeout_in_sec) 905 tmf_req.timeout_in_sec = 1; 906 } 907 908 op_ib_q = &softs->op_raid_ib_q[0]; 909 rcb->path = RAID_PATH; 910 rcb->req_pending = true; 911 /* Timedout tmf response goes here */ 912 rcb->error_cmp_callback = pqisrc_process_raid_response_error; 913 914 rval = pqisrc_submit_cmnd(softs, op_ib_q, &tmf_req); 915 if (rval != PQI_STATUS_SUCCESS) { 916 DBG_ERR("Unable to submit command rval=%d\n", rval); 917 return rval; 918 } 919 920 rval = pqisrc_wait_on_condition(softs, rcb, PQISRC_TMF_TIMEOUT); 921 if (rval != PQI_STATUS_SUCCESS) { 922 DBG_ERR("Task Management tmf_type : %d timeout\n", tmf_type); 923 rcb->status = rval; 924 } 925 926 if (rcb->status != REQUEST_SUCCESS) { 927 DBG_NOTE("Task Management failed tmf_type:%d " 928 "stat:0x%x\n", tmf_type, rcb->status); 929 rval = PQI_STATUS_FAILURE; 930 } 931 932 DBG_FUNC("OUT"); 933 return rval; 934 } 935 936 int 937 pqisrc_send_tmf(pqisrc_softstate_t *softs, pqi_scsi_dev_t *devp, 938 rcb_t *rcb, rcb_t *rcb_to_manage, int tmf_type) 939 { 940 int ret = PQI_STATUS_SUCCESS; 941 942 DBG_FUNC("IN"); 943 rcb->softs = softs; 944 945 if(!devp->is_physical_device) { 946 if (tmf_type == SOP_TASK_MANAGEMENT_FUNCTION_ABORT_TASK) { 947 if(rcb_to_manage->path == AIO_PATH) { 948 if(devp->offload_enabled) 949 ret = pqisrc_send_aio_tmf(softs, devp, rcb, rcb_to_manage, tmf_type); 950 } 951 else { 952 DBG_INFO("TASK ABORT not supported in raid\n"); 953 ret = PQI_STATUS_FAILURE; 954 } 955 } 956 else { 957 ret = pqisrc_send_raid_tmf(softs, devp, rcb, rcb_to_manage, tmf_type); 958 } 959 } else { 960 if (tmf_type == SOP_TASK_MANAGEMENT_FUNCTION_ABORT_TASK) 961 ret = pqisrc_send_aio_tmf(softs, devp, rcb, rcb_to_manage, tmf_type); 962 else 963 ret = pqisrc_send_raid_tmf(softs, devp, rcb, rcb_to_manage, tmf_type); 964 } 965 966 DBG_FUNC("IN"); 967 968 return ret; 969 } 970 971 /* 972 * Function used to build and send the vendor general request 973 * Used for configuring PQI feature bits between firmware and driver 974 */ 975 int 976 pqisrc_build_send_vendor_request( 977 pqisrc_softstate_t *softs, 978 pqi_vendor_general_request_t *request, 979 raid_path_error_info_elem_t *error_info) 980 { 981 int ret = PQI_STATUS_SUCCESS; 982 ib_queue_t *op_ib_q = &softs->op_raid_ib_q[PQI_DEFAULT_IB_QUEUE]; 983 ob_queue_t *ob_q = &softs->op_ob_q[PQI_DEFAULT_IB_QUEUE]; 984 985 rcb_t *rcb = NULL; 986 987 uint16_t request_id = 0; 988 989 /* Get the tag */ 990 request_id = pqisrc_get_tag(&softs->taglist); 991 if (INVALID_ELEM == request_id) { 992 DBG_ERR("Tag not available\n"); 993 ret = PQI_STATUS_FAILURE; 994 goto err_notag; 995 } 996 997 ((pqi_vendor_general_request_t *)request)->request_id = request_id; 998 ((pqi_vendor_general_request_t *)request)->response_queue_id = ob_q->q_id; 999 1000 rcb = &softs->rcb[request_id]; 1001 1002 rcb->req_pending = true; 1003 rcb->tag = request_id; 1004 1005 ret = pqisrc_submit_cmnd(softs, op_ib_q, request); 1006 1007 if (ret != PQI_STATUS_SUCCESS) { 1008 DBG_ERR("Unable to submit command\n"); 1009 goto err_out; 1010 } 1011 1012 ret = pqisrc_wait_on_condition(softs, rcb, PQISRC_CMD_TIMEOUT); 1013 if (ret != PQI_STATUS_SUCCESS) { 1014 DBG_ERR("Management request timed out!\n"); 1015 goto err_out; 1016 } 1017 1018 ret = rcb->status; 1019 if (ret) { 1020 ret = PQI_STATUS_FAILURE; 1021 if(error_info) { 1022 // TODO: config table err handling. 1023 } 1024 } else { 1025 if(error_info) { 1026 ret = PQI_STATUS_SUCCESS; 1027 memset(error_info, 0, sizeof(*error_info)); 1028 } 1029 } 1030 1031 os_reset_rcb(rcb); 1032 pqisrc_put_tag(&softs->taglist, ((pqi_vendor_general_request_t *)request)->request_id); 1033 DBG_FUNC("OUT\n"); 1034 return ret; 1035 1036 err_out: 1037 DBG_ERR("Vender general request submission failed.\n"); 1038 os_reset_rcb(rcb); 1039 pqisrc_put_tag(&softs->taglist, ((pqi_vendor_general_request_t *)request)->request_id); 1040 err_notag: 1041 DBG_FUNC("FAILED \n"); 1042 return ret; 1043 } 1044 1045 /* return the path as ASCII-string */ 1046 char * 1047 io_path_to_ascii(IO_PATH_T path) 1048 { 1049 switch (path) 1050 { 1051 case AIO_PATH: return "Aio"; 1052 case RAID_PATH: return "Raid"; 1053 default: return "Unknown"; 1054 } 1055 }
Cache object: 3f43fa5a04524ca9f443c80846abeb91
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