1 /*- 2 * Copyright (c) 2018 Microsemi Corporation. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* $FreeBSD$ */ 28 29 #include "smartpqi_includes.h" 30 31 #define SG_FLAG_LAST 0x40000000 32 #define SG_FLAG_CHAIN 0x80000000 33 34 /* Subroutine to find out embedded sgl count in IU */ 35 static inline 36 uint32_t pqisrc_embedded_sgl_count(uint32_t elem_alloted) 37 { 38 uint32_t embedded_sgl_count = MAX_EMBEDDED_SG_IN_FIRST_IU; 39 DBG_FUNC(" IN "); 40 /** 41 calculate embedded sgl count using num_elem_alloted for IO 42 **/ 43 if(elem_alloted - 1) 44 embedded_sgl_count += ((elem_alloted - 1) * MAX_EMBEDDED_SG_IN_IU); 45 DBG_IO("embedded_sgl_count :%d\n",embedded_sgl_count); 46 47 DBG_FUNC(" OUT "); 48 49 return embedded_sgl_count; 50 51 } 52 53 /* Subroutine to find out contiguous free elem in IU */ 54 static inline 55 uint32_t pqisrc_contiguous_free_elem(uint32_t pi, uint32_t ci, uint32_t elem_in_q) 56 { 57 uint32_t contiguous_free_elem = 0; 58 59 DBG_FUNC(" IN "); 60 61 if(pi >= ci) { 62 contiguous_free_elem = (elem_in_q - pi); 63 if(ci == 0) 64 contiguous_free_elem -= 1; 65 } else { 66 contiguous_free_elem = (ci - pi - 1); 67 } 68 69 DBG_FUNC(" OUT "); 70 71 return contiguous_free_elem; 72 } 73 74 /* Subroutine to find out num of elements need for the request */ 75 static uint32_t 76 pqisrc_num_elem_needed(pqisrc_softstate_t *softs, uint32_t SG_Count) 77 { 78 uint32_t num_sg; 79 uint32_t num_elem_required = 1; 80 DBG_FUNC(" IN "); 81 DBG_IO("SGL_Count :%d",SG_Count); 82 /******** 83 If SG_Count greater than max sg per IU i.e 4 or 68 84 (4 is with out spanning or 68 is with spanning) chaining is required. 85 OR, If SG_Count <= MAX_EMBEDDED_SG_IN_FIRST_IU then, 86 on these two cases one element is enough. 87 ********/ 88 if(SG_Count > softs->max_sg_per_iu || SG_Count <= MAX_EMBEDDED_SG_IN_FIRST_IU) 89 return num_elem_required; 90 /* 91 SGL Count Other Than First IU 92 */ 93 num_sg = SG_Count - MAX_EMBEDDED_SG_IN_FIRST_IU; 94 num_elem_required += PQISRC_DIV_ROUND_UP(num_sg, MAX_EMBEDDED_SG_IN_IU); 95 DBG_FUNC(" OUT "); 96 return num_elem_required; 97 } 98 99 /* Subroutine to build SG list for the IU submission*/ 100 static 101 boolean_t pqisrc_build_sgl(sgt_t *sg_array, rcb_t *rcb, iu_header_t *iu_hdr, 102 uint32_t num_elem_alloted) 103 { 104 uint32_t i; 105 uint32_t num_sg = OS_GET_IO_SG_COUNT(rcb); 106 sgt_t *sgt = sg_array; 107 sgt_t *sg_chain = NULL; 108 boolean_t partial = false; 109 110 DBG_FUNC(" IN "); 111 112 DBG_IO("SGL_Count :%d",num_sg); 113 if (0 == num_sg) { 114 goto out; 115 } 116 117 if (num_sg <= pqisrc_embedded_sgl_count(num_elem_alloted)) { 118 for (i = 0; i < num_sg; i++, sgt++) { 119 sgt->addr= OS_GET_IO_SG_ADDR(rcb,i); 120 sgt->len= OS_GET_IO_SG_LEN(rcb,i); 121 sgt->flags= 0; 122 } 123 124 sg_array[num_sg - 1].flags = SG_FLAG_LAST; 125 } else { 126 /** 127 SGL Chaining 128 **/ 129 sg_chain = rcb->sg_chain_virt; 130 sgt->addr = rcb->sg_chain_dma; 131 sgt->len = num_sg * sizeof(sgt_t); 132 sgt->flags = SG_FLAG_CHAIN; 133 134 sgt = sg_chain; 135 for (i = 0; i < num_sg; i++, sgt++) { 136 sgt->addr = OS_GET_IO_SG_ADDR(rcb,i); 137 sgt->len = OS_GET_IO_SG_LEN(rcb,i); 138 sgt->flags = 0; 139 } 140 141 sg_chain[num_sg - 1].flags = SG_FLAG_LAST; 142 num_sg = 1; 143 partial = true; 144 } 145 out: 146 iu_hdr->iu_length = num_sg * sizeof(sgt_t); 147 DBG_FUNC(" OUT "); 148 return partial; 149 150 } 151 152 /*Subroutine used to Build the RAID request */ 153 static void 154 pqisrc_build_raid_io(pqisrc_softstate_t *softs, rcb_t *rcb, 155 pqisrc_raid_req_t *raid_req, uint32_t num_elem_alloted) 156 { 157 DBG_FUNC(" IN "); 158 159 raid_req->header.iu_type = PQI_IU_TYPE_RAID_PATH_IO_REQUEST; 160 raid_req->header.comp_feature = 0; 161 raid_req->response_queue_id = OS_GET_IO_RESP_QID(softs, rcb); 162 raid_req->work_area[0] = 0; 163 raid_req->work_area[1] = 0; 164 raid_req->request_id = rcb->tag; 165 raid_req->nexus_id = 0; 166 raid_req->buffer_length = GET_SCSI_BUFFLEN(rcb); 167 memcpy(raid_req->lun_number, rcb->dvp->scsi3addr, 168 sizeof(raid_req->lun_number)); 169 raid_req->protocol_spec = 0; 170 raid_req->data_direction = rcb->data_dir; 171 raid_req->reserved1 = 0; 172 raid_req->fence = 0; 173 raid_req->error_index = raid_req->request_id; 174 raid_req->reserved2 = 0; 175 raid_req->task_attribute = OS_GET_TASK_ATTR(rcb); 176 raid_req->command_priority = 0; 177 raid_req->reserved3 = 0; 178 raid_req->reserved4 = 0; 179 raid_req->reserved5 = 0; 180 181 /* As cdb and additional_cdb_bytes are contiguous, 182 update them in a single statement */ 183 memcpy(raid_req->cdb, rcb->cdbp, rcb->cmdlen); 184 #if 0 185 DBG_IO("CDB :"); 186 for(i = 0; i < rcb->cmdlen ; i++) 187 DBG_IO(" 0x%x \n ",raid_req->cdb[i]); 188 #endif 189 190 switch (rcb->cmdlen) { 191 case 6: 192 case 10: 193 case 12: 194 case 16: 195 raid_req->additional_cdb_bytes_usage = 196 PQI_ADDITIONAL_CDB_BYTES_0; 197 break; 198 case 20: 199 raid_req->additional_cdb_bytes_usage = 200 PQI_ADDITIONAL_CDB_BYTES_4; 201 break; 202 case 24: 203 raid_req->additional_cdb_bytes_usage = 204 PQI_ADDITIONAL_CDB_BYTES_8; 205 break; 206 case 28: 207 raid_req->additional_cdb_bytes_usage = 208 PQI_ADDITIONAL_CDB_BYTES_12; 209 break; 210 case 32: 211 default: /* todo:review again */ 212 raid_req->additional_cdb_bytes_usage = 213 PQI_ADDITIONAL_CDB_BYTES_16; 214 break; 215 } 216 217 /* Frame SGL Descriptor */ 218 raid_req->partial = pqisrc_build_sgl(&raid_req->sg_descriptors[0], rcb, 219 &raid_req->header, num_elem_alloted); 220 221 raid_req->header.iu_length += 222 offsetof(pqisrc_raid_req_t, sg_descriptors) - sizeof(iu_header_t); 223 224 #if 0 225 DBG_IO("raid_req->header.iu_type : 0x%x", raid_req->header.iu_type); 226 DBG_IO("raid_req->response_queue_id :%d\n"raid_req->response_queue_id); 227 DBG_IO("raid_req->request_id : 0x%x", raid_req->request_id); 228 DBG_IO("raid_req->buffer_length : 0x%x", raid_req->buffer_length); 229 DBG_IO("raid_req->task_attribute : 0x%x", raid_req->task_attribute); 230 DBG_IO("raid_req->lun_number : 0x%x", raid_req->lun_number); 231 DBG_IO("raid_req->error_index : 0x%x", raid_req->error_index); 232 DBG_IO("raid_req->sg_descriptors[0].addr : %p", (void*)raid_req->sg_descriptors[0].addr); 233 DBG_IO("raid_req->sg_descriptors[0].len : 0x%x", raid_req->sg_descriptors[0].len); 234 DBG_IO("raid_req->sg_descriptors[0].flags : 0%x", raid_req->sg_descriptors[0].flags); 235 #endif 236 rcb->success_cmp_callback = pqisrc_process_io_response_success; 237 rcb->error_cmp_callback = pqisrc_process_raid_response_error; 238 rcb->resp_qid = raid_req->response_queue_id; 239 240 DBG_FUNC(" OUT "); 241 242 } 243 244 /*Subroutine used to Build the AIO request */ 245 static void 246 pqisrc_build_aio_io(pqisrc_softstate_t *softs, rcb_t *rcb, 247 pqi_aio_req_t *aio_req, uint32_t num_elem_alloted) 248 { 249 DBG_FUNC(" IN "); 250 251 aio_req->header.iu_type = PQI_IU_TYPE_AIO_PATH_IO_REQUEST; 252 aio_req->header.comp_feature = 0; 253 aio_req->response_queue_id = OS_GET_IO_RESP_QID(softs, rcb); 254 aio_req->work_area[0] = 0; 255 aio_req->work_area[1] = 0; 256 aio_req->req_id = rcb->tag; 257 aio_req->res1[0] = 0; 258 aio_req->res1[1] = 0; 259 aio_req->nexus = rcb->ioaccel_handle; 260 aio_req->buf_len = GET_SCSI_BUFFLEN(rcb); 261 aio_req->data_dir = rcb->data_dir; 262 aio_req->mem_type = 0; 263 aio_req->fence = 0; 264 aio_req->res2 = 0; 265 aio_req->task_attr = OS_GET_TASK_ATTR(rcb); 266 aio_req->cmd_prio = 0; 267 aio_req->res3 = 0; 268 aio_req->err_idx = aio_req->req_id; 269 aio_req->cdb_len = rcb->cmdlen; 270 if(rcb->cmdlen > sizeof(aio_req->cdb)) 271 rcb->cmdlen = sizeof(aio_req->cdb); 272 memcpy(aio_req->cdb, rcb->cdbp, rcb->cmdlen); 273 #if 0 274 DBG_IO("CDB : \n"); 275 for(int i = 0; i < rcb->cmdlen ; i++) 276 DBG_IO(" 0x%x \n",aio_req->cdb[i]); 277 #endif 278 memset(aio_req->lun,0,sizeof(aio_req->lun)); 279 memset(aio_req->res4,0,sizeof(aio_req->res4)); 280 281 if(rcb->encrypt_enable == true) { 282 aio_req->encrypt_enable = true; 283 aio_req->encrypt_key_index = LE_16(rcb->enc_info.data_enc_key_index); 284 aio_req->encrypt_twk_low = LE_32(rcb->enc_info.encrypt_tweak_lower); 285 aio_req->encrypt_twk_high = LE_32(rcb->enc_info.encrypt_tweak_upper); 286 } else { 287 aio_req->encrypt_enable = 0; 288 aio_req->encrypt_key_index = 0; 289 aio_req->encrypt_twk_high = 0; 290 aio_req->encrypt_twk_low = 0; 291 } 292 293 /* Frame SGL Descriptor */ 294 aio_req->partial = pqisrc_build_sgl(&aio_req->sg_desc[0], rcb, 295 &aio_req->header, num_elem_alloted); 296 297 aio_req->num_sg = aio_req->header.iu_length / sizeof(sgt_t); 298 299 DBG_INFO("aio_req->num_sg :%d",aio_req->num_sg); 300 301 aio_req->header.iu_length += offsetof(pqi_aio_req_t, sg_desc) - 302 sizeof(iu_header_t); 303 #if 0 304 DBG_IO("aio_req->header.iu_type : 0x%x \n",aio_req->header.iu_type); 305 DBG_IO("aio_req->resp_qid :0x%x",aio_req->resp_qid); 306 DBG_IO("aio_req->req_id : 0x%x \n",aio_req->req_id); 307 DBG_IO("aio_req->nexus : 0x%x \n",aio_req->nexus); 308 DBG_IO("aio_req->buf_len : 0x%x \n",aio_req->buf_len); 309 DBG_IO("aio_req->data_dir : 0x%x \n",aio_req->data_dir); 310 DBG_IO("aio_req->task_attr : 0x%x \n",aio_req->task_attr); 311 DBG_IO("aio_req->err_idx : 0x%x \n",aio_req->err_idx); 312 DBG_IO("aio_req->num_sg :%d",aio_req->num_sg); 313 DBG_IO("aio_req->sg_desc[0].addr : %p \n", (void*)aio_req->sg_desc[0].addr); 314 DBG_IO("aio_req->sg_desc[0].len : 0%x \n", aio_req->sg_desc[0].len); 315 DBG_IO("aio_req->sg_desc[0].flags : 0%x \n", aio_req->sg_desc[0].flags); 316 #endif 317 318 rcb->success_cmp_callback = pqisrc_process_io_response_success; 319 rcb->error_cmp_callback = pqisrc_process_aio_response_error; 320 rcb->resp_qid = aio_req->response_queue_id; 321 322 DBG_FUNC(" OUT "); 323 324 } 325 326 /*Function used to build and send RAID/AIO */ 327 int pqisrc_build_send_io(pqisrc_softstate_t *softs,rcb_t *rcb) 328 { 329 ib_queue_t *ib_q_array = softs->op_aio_ib_q; 330 ib_queue_t *ib_q = NULL; 331 char *ib_iu = NULL; 332 IO_PATH_T io_path = AIO_PATH; 333 uint32_t TraverseCount = 0; 334 int first_qindex = OS_GET_IO_REQ_QINDEX(softs, rcb); 335 int qindex = first_qindex; 336 uint32_t num_op_ib_q = softs->num_op_aio_ibq; 337 uint32_t num_elem_needed; 338 uint32_t num_elem_alloted = 0; 339 pqi_scsi_dev_t *devp = rcb->dvp; 340 uint8_t raidbypass_cdb[16]; 341 342 DBG_FUNC(" IN "); 343 344 rcb->cdbp = OS_GET_CDBP(rcb); 345 346 if(IS_AIO_PATH(devp)) { 347 /** IO for Physical Drive **/ 348 /** Send in AIO PATH**/ 349 rcb->ioaccel_handle = devp->ioaccel_handle; 350 } else { 351 int ret = PQI_STATUS_FAILURE; 352 /** IO for RAID Volume **/ 353 if (devp->offload_enabled) { 354 /** ByPass IO ,Send in AIO PATH **/ 355 ret = pqisrc_send_scsi_cmd_raidbypass(softs, 356 devp, rcb, raidbypass_cdb); 357 } 358 359 if (PQI_STATUS_FAILURE == ret) { 360 /** Send in RAID PATH **/ 361 io_path = RAID_PATH; 362 num_op_ib_q = softs->num_op_raid_ibq; 363 ib_q_array = softs->op_raid_ib_q; 364 } else { 365 rcb->cdbp = raidbypass_cdb; 366 } 367 } 368 369 num_elem_needed = pqisrc_num_elem_needed(softs, OS_GET_IO_SG_COUNT(rcb)); 370 DBG_IO("num_elem_needed :%d",num_elem_needed); 371 372 do { 373 uint32_t num_elem_available; 374 ib_q = (ib_q_array + qindex); 375 PQI_LOCK(&ib_q->lock); 376 num_elem_available = pqisrc_contiguous_free_elem(ib_q->pi_local, 377 *(ib_q->ci_virt_addr), ib_q->num_elem); 378 379 DBG_IO("num_elem_avialable :%d\n",num_elem_available); 380 if(num_elem_available >= num_elem_needed) { 381 num_elem_alloted = num_elem_needed; 382 break; 383 } 384 DBG_IO("Current queue is busy! Hop to next queue\n"); 385 386 PQI_UNLOCK(&ib_q->lock); 387 qindex = (qindex + 1) % num_op_ib_q; 388 if(qindex == first_qindex) { 389 if (num_elem_needed == 1) 390 break; 391 TraverseCount += 1; 392 num_elem_needed = 1; 393 } 394 }while(TraverseCount < 2); 395 396 DBG_IO("num_elem_alloted :%d",num_elem_alloted); 397 if (num_elem_alloted == 0) { 398 DBG_WARN("OUT: IB Queues were full\n"); 399 return PQI_STATUS_QFULL; 400 } 401 402 /* Get IB Queue Slot address to build IU */ 403 ib_iu = ib_q->array_virt_addr + (ib_q->pi_local * ib_q->elem_size); 404 405 if(io_path == AIO_PATH) { 406 /** Build AIO structure **/ 407 pqisrc_build_aio_io(softs, rcb, (pqi_aio_req_t*)ib_iu, 408 num_elem_alloted); 409 } else { 410 /** Build RAID structure **/ 411 pqisrc_build_raid_io(softs, rcb, (pqisrc_raid_req_t*)ib_iu, 412 num_elem_alloted); 413 } 414 415 rcb->req_pending = true; 416 417 /* Update the local PI */ 418 ib_q->pi_local = (ib_q->pi_local + num_elem_alloted) % ib_q->num_elem; 419 420 DBG_INFO("ib_q->pi_local : %x\n", ib_q->pi_local); 421 DBG_INFO("*ib_q->ci_virt_addr: %x\n",*(ib_q->ci_virt_addr)); 422 423 /* Inform the fw about the new IU */ 424 PCI_MEM_PUT32(softs, ib_q->pi_register_abs, ib_q->pi_register_offset, ib_q->pi_local); 425 426 PQI_UNLOCK(&ib_q->lock); 427 DBG_FUNC(" OUT "); 428 return PQI_STATUS_SUCCESS; 429 } 430 431 /* Subroutine used to set encryption info as part of RAID bypass IO*/ 432 static inline void pqisrc_set_enc_info( 433 struct pqi_enc_info *enc_info, struct raid_map *raid_map, 434 uint64_t first_block) 435 { 436 uint32_t volume_blk_size; 437 438 /* 439 * Set the encryption tweak values based on logical block address. 440 * If the block size is 512, the tweak value is equal to the LBA. 441 * For other block sizes, tweak value is (LBA * block size) / 512. 442 */ 443 volume_blk_size = GET_LE32((uint8_t *)&raid_map->volume_blk_size); 444 if (volume_blk_size != 512) 445 first_block = (first_block * volume_blk_size) / 512; 446 447 enc_info->data_enc_key_index = 448 GET_LE16((uint8_t *)&raid_map->data_encryption_key_index); 449 enc_info->encrypt_tweak_upper = ((uint32_t)(((first_block) >> 16) >> 16)); 450 enc_info->encrypt_tweak_lower = ((uint32_t)(first_block)); 451 } 452 453 /* 454 * Attempt to perform offload RAID mapping for a logical volume I/O. 455 */ 456 457 #define HPSA_RAID_0 0 458 #define HPSA_RAID_4 1 459 #define HPSA_RAID_1 2 /* also used for RAID 10 */ 460 #define HPSA_RAID_5 3 /* also used for RAID 50 */ 461 #define HPSA_RAID_51 4 462 #define HPSA_RAID_6 5 /* also used for RAID 60 */ 463 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 464 #define HPSA_RAID_MAX HPSA_RAID_ADM 465 #define HPSA_RAID_UNKNOWN 0xff 466 467 /* Subroutine used to parse the scsi opcode and build the CDB for RAID bypass*/ 468 int check_for_scsi_opcode(uint8_t *cdb, boolean_t *is_write, uint64_t *fst_blk, 469 uint32_t *blk_cnt) { 470 switch (cdb[0]) { 471 case SCMD_WRITE_6: 472 *is_write = true; 473 case SCMD_READ_6: 474 *fst_blk = (uint64_t)(((cdb[1] & 0x1F) << 16) | 475 (cdb[2] << 8) | cdb[3]); 476 *blk_cnt = (uint32_t)cdb[4]; 477 if (*blk_cnt == 0) 478 *blk_cnt = 256; 479 break; 480 case SCMD_WRITE_10: 481 *is_write = true; 482 case SCMD_READ_10: 483 *fst_blk = (uint64_t)GET_BE32(&cdb[2]); 484 *blk_cnt = (uint32_t)GET_BE16(&cdb[7]); 485 break; 486 case SCMD_WRITE_12: 487 *is_write = true; 488 case SCMD_READ_12: 489 *fst_blk = (uint64_t)GET_BE32(&cdb[2]); 490 *blk_cnt = GET_BE32(&cdb[6]); 491 break; 492 case SCMD_WRITE_16: 493 *is_write = true; 494 case SCMD_READ_16: 495 *fst_blk = GET_BE64(&cdb[2]); 496 *blk_cnt = GET_BE32(&cdb[10]); 497 break; 498 default: 499 /* Process via normal I/O path. */ 500 return PQI_STATUS_FAILURE; 501 } 502 return PQI_STATUS_SUCCESS; 503 } 504 505 /* 506 * Function used to build and send RAID bypass request to the adapter 507 */ 508 int pqisrc_send_scsi_cmd_raidbypass(pqisrc_softstate_t *softs, 509 pqi_scsi_dev_t *device, rcb_t *rcb, uint8_t *cdb) 510 { 511 struct raid_map *raid_map; 512 boolean_t is_write = false; 513 uint32_t map_idx; 514 uint64_t fst_blk, lst_blk; 515 uint32_t blk_cnt, blks_per_row; 516 uint64_t fst_row, lst_row; 517 uint32_t fst_row_offset, lst_row_offset; 518 uint32_t fst_col, lst_col; 519 uint32_t r5or6_blks_per_row; 520 uint64_t r5or6_fst_row, r5or6_lst_row; 521 uint32_t r5or6_fst_row_offset, r5or6_lst_row_offset; 522 uint32_t r5or6_fst_col, r5or6_lst_col; 523 uint16_t data_disks_per_row, total_disks_per_row; 524 uint16_t layout_map_count; 525 uint32_t stripesz; 526 uint16_t strip_sz; 527 uint32_t fst_grp, lst_grp, cur_grp; 528 uint32_t map_row; 529 uint64_t disk_block; 530 uint32_t disk_blk_cnt; 531 uint8_t cdb_length; 532 int offload_to_mirror; 533 int i; 534 DBG_FUNC(" IN \n"); 535 DBG_IO("!!!!!\n"); 536 537 /* Check for eligible opcode, get LBA and block count. */ 538 memcpy(cdb, OS_GET_CDBP(rcb), rcb->cmdlen); 539 540 for(i = 0; i < rcb->cmdlen ; i++) 541 DBG_IO(" CDB [ %d ] : %x\n",i,cdb[i]); 542 if(check_for_scsi_opcode(cdb, &is_write, 543 &fst_blk, &blk_cnt) == PQI_STATUS_FAILURE) 544 return PQI_STATUS_FAILURE; 545 /* Check for write to non-RAID-0. */ 546 if (is_write && device->raid_level != SA_RAID_0) 547 return PQI_STATUS_FAILURE; 548 549 if(blk_cnt == 0) 550 return PQI_STATUS_FAILURE; 551 552 lst_blk = fst_blk + blk_cnt - 1; 553 raid_map = device->raid_map; 554 555 /* Check for invalid block or wraparound. */ 556 if (lst_blk >= GET_LE64((uint8_t *)&raid_map->volume_blk_cnt) || 557 lst_blk < fst_blk) 558 return PQI_STATUS_FAILURE; 559 560 data_disks_per_row = GET_LE16((uint8_t *)&raid_map->data_disks_per_row); 561 strip_sz = GET_LE16((uint8_t *)(&raid_map->strip_size)); 562 layout_map_count = GET_LE16((uint8_t *)(&raid_map->layout_map_count)); 563 564 /* Calculate stripe information for the request. */ 565 blks_per_row = data_disks_per_row * strip_sz; 566 if (!blks_per_row) 567 return PQI_STATUS_FAILURE; 568 /* use __udivdi3 ? */ 569 fst_row = fst_blk / blks_per_row; 570 lst_row = lst_blk / blks_per_row; 571 fst_row_offset = (uint32_t)(fst_blk - (fst_row * blks_per_row)); 572 lst_row_offset = (uint32_t)(lst_blk - (lst_row * blks_per_row)); 573 fst_col = fst_row_offset / strip_sz; 574 lst_col = lst_row_offset / strip_sz; 575 576 /* If this isn't a single row/column then give to the controller. */ 577 if (fst_row != lst_row || fst_col != lst_col) 578 return PQI_STATUS_FAILURE; 579 580 /* Proceeding with driver mapping. */ 581 total_disks_per_row = data_disks_per_row + 582 GET_LE16((uint8_t *)(&raid_map->metadata_disks_per_row)); 583 map_row = ((uint32_t)(fst_row >> raid_map->parity_rotation_shift)) % 584 GET_LE16((uint8_t *)(&raid_map->row_cnt)); 585 map_idx = (map_row * total_disks_per_row) + fst_col; 586 587 /* RAID 1 */ 588 if (device->raid_level == SA_RAID_1) { 589 if (device->offload_to_mirror) 590 map_idx += data_disks_per_row; 591 device->offload_to_mirror = !device->offload_to_mirror; 592 } else if (device->raid_level == SA_RAID_ADM) { 593 /* RAID ADM */ 594 /* 595 * Handles N-way mirrors (R1-ADM) and R10 with # of drives 596 * divisible by 3. 597 */ 598 offload_to_mirror = device->offload_to_mirror; 599 if (offload_to_mirror == 0) { 600 /* use physical disk in the first mirrored group. */ 601 map_idx %= data_disks_per_row; 602 } else { 603 do { 604 /* 605 * Determine mirror group that map_idx 606 * indicates. 607 */ 608 cur_grp = map_idx / data_disks_per_row; 609 610 if (offload_to_mirror != cur_grp) { 611 if (cur_grp < 612 layout_map_count - 1) { 613 /* 614 * Select raid index from 615 * next group. 616 */ 617 map_idx += data_disks_per_row; 618 cur_grp++; 619 } else { 620 /* 621 * Select raid index from first 622 * group. 623 */ 624 map_idx %= data_disks_per_row; 625 cur_grp = 0; 626 } 627 } 628 } while (offload_to_mirror != cur_grp); 629 } 630 631 /* Set mirror group to use next time. */ 632 offload_to_mirror = 633 (offload_to_mirror >= layout_map_count - 1) ? 634 0 : offload_to_mirror + 1; 635 if(offload_to_mirror >= layout_map_count) 636 return PQI_STATUS_FAILURE; 637 638 device->offload_to_mirror = offload_to_mirror; 639 /* 640 * Avoid direct use of device->offload_to_mirror within this 641 * function since multiple threads might simultaneously 642 * increment it beyond the range of device->layout_map_count -1. 643 */ 644 } else if ((device->raid_level == SA_RAID_5 || 645 device->raid_level == SA_RAID_6) && layout_map_count > 1) { 646 /* RAID 50/60 */ 647 /* Verify first and last block are in same RAID group */ 648 r5or6_blks_per_row = strip_sz * data_disks_per_row; 649 stripesz = r5or6_blks_per_row * layout_map_count; 650 651 fst_grp = (fst_blk % stripesz) / r5or6_blks_per_row; 652 lst_grp = (lst_blk % stripesz) / r5or6_blks_per_row; 653 654 if (fst_grp != lst_grp) 655 return PQI_STATUS_FAILURE; 656 657 /* Verify request is in a single row of RAID 5/6 */ 658 fst_row = r5or6_fst_row = 659 fst_blk / stripesz; 660 r5or6_lst_row = lst_blk / stripesz; 661 662 if (r5or6_fst_row != r5or6_lst_row) 663 return PQI_STATUS_FAILURE; 664 665 /* Verify request is in a single column */ 666 fst_row_offset = r5or6_fst_row_offset = 667 (uint32_t)((fst_blk % stripesz) % 668 r5or6_blks_per_row); 669 670 r5or6_lst_row_offset = 671 (uint32_t)((lst_blk % stripesz) % 672 r5or6_blks_per_row); 673 674 fst_col = r5or6_fst_row_offset / strip_sz; 675 r5or6_fst_col = fst_col; 676 r5or6_lst_col = r5or6_lst_row_offset / strip_sz; 677 678 if (r5or6_fst_col != r5or6_lst_col) 679 return PQI_STATUS_FAILURE; 680 681 /* Request is eligible */ 682 map_row = 683 ((uint32_t)(fst_row >> raid_map->parity_rotation_shift)) % 684 GET_LE16((uint8_t *)(&raid_map->row_cnt)); 685 686 map_idx = (fst_grp * 687 (GET_LE16((uint8_t *)(&raid_map->row_cnt)) * 688 total_disks_per_row)) + 689 (map_row * total_disks_per_row) + fst_col; 690 } 691 692 if (map_idx >= RAID_MAP_MAX_ENTRIES) 693 return PQI_STATUS_FAILURE; 694 695 rcb->ioaccel_handle = raid_map->dev_data[map_idx].ioaccel_handle; 696 disk_block = GET_LE64((uint8_t *)(&raid_map->disk_starting_blk)) + 697 fst_row * strip_sz + 698 (fst_row_offset - fst_col * strip_sz); 699 disk_blk_cnt = blk_cnt; 700 701 /* Handle differing logical/physical block sizes. */ 702 if (raid_map->phys_blk_shift) { 703 disk_block <<= raid_map->phys_blk_shift; 704 disk_blk_cnt <<= raid_map->phys_blk_shift; 705 } 706 707 if (disk_blk_cnt > 0xffff) 708 return PQI_STATUS_FAILURE; 709 710 /* Build the new CDB for the physical disk I/O. */ 711 if (disk_block > 0xffffffff) { 712 cdb[0] = is_write ? SCMD_WRITE_16 : SCMD_READ_16; 713 cdb[1] = 0; 714 PUT_BE64(disk_block, &cdb[2]); 715 PUT_BE32(disk_blk_cnt, &cdb[10]); 716 cdb[14] = 0; 717 cdb[15] = 0; 718 cdb_length = 16; 719 } else { 720 cdb[0] = is_write ? SCMD_WRITE_10 : SCMD_READ_10; 721 cdb[1] = 0; 722 PUT_BE32(disk_block, &cdb[2]); 723 cdb[6] = 0; 724 PUT_BE16(disk_blk_cnt, &cdb[7]); 725 cdb[9] = 0; 726 cdb_length = 10; 727 } 728 729 if (GET_LE16((uint8_t *)(&raid_map->flags)) & 730 RAID_MAP_ENCRYPTION_ENABLED) { 731 pqisrc_set_enc_info(&rcb->enc_info, raid_map, 732 fst_blk); 733 rcb->encrypt_enable = true; 734 } else { 735 rcb->encrypt_enable = false; 736 } 737 738 rcb->cmdlen = cdb_length; 739 740 741 DBG_FUNC("OUT"); 742 743 return PQI_STATUS_SUCCESS; 744 } 745 746 /* Function used to submit a TMF to the adater */ 747 int pqisrc_send_tmf(pqisrc_softstate_t *softs, pqi_scsi_dev_t *devp, 748 rcb_t *rcb, int req_id, int tmf_type) 749 { 750 int rval = PQI_STATUS_SUCCESS; 751 pqi_tmf_req_t tmf_req; 752 753 memset(&tmf_req, 0, sizeof(pqi_tmf_req_t)); 754 755 DBG_FUNC("IN"); 756 757 tmf_req.header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT; 758 tmf_req.header.iu_length = sizeof(tmf_req) - sizeof(iu_header_t); 759 tmf_req.req_id = rcb->tag; 760 761 memcpy(tmf_req.lun, devp->scsi3addr, sizeof(tmf_req.lun)); 762 tmf_req.tmf = tmf_type; 763 tmf_req.req_id_to_manage = req_id; 764 tmf_req.resp_qid = OS_GET_TMF_RESP_QID(softs, rcb); 765 tmf_req.obq_id_to_manage = rcb->resp_qid; 766 767 rcb->req_pending = true; 768 769 rval = pqisrc_submit_cmnd(softs, 770 &softs->op_raid_ib_q[OS_GET_TMF_REQ_QINDEX(softs, rcb)], &tmf_req); 771 if (rval != PQI_STATUS_SUCCESS) { 772 DBG_ERR("Unable to submit command rval=%d\n", rval); 773 return rval; 774 } 775 776 rval = pqisrc_wait_on_condition(softs, rcb); 777 if (rval != PQI_STATUS_SUCCESS){ 778 DBG_ERR("Task Management tmf_type : %d timeout\n", tmf_type); 779 rcb->status = REQUEST_FAILED; 780 } 781 782 if (rcb->status != REQUEST_SUCCESS) { 783 DBG_ERR_BTL(devp, "Task Management failed tmf_type:%d " 784 "stat:0x%x\n", tmf_type, rcb->status); 785 rval = PQI_STATUS_FAILURE; 786 } 787 788 DBG_FUNC("OUT"); 789 return rval; 790 } 791