mv_sas.c revision 6ceae7c6234f2961dc59912412e8c0706d825873
1/* 2 * Marvell 88SE64xx/88SE94xx main function 3 * 4 * Copyright 2007 Red Hat, Inc. 5 * Copyright 2008 Marvell. <kewei@marvell.com> 6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com> 7 * 8 * This file is licensed under GPLv2. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; version 2 of the 13 * License. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 23 * USA 24*/ 25 26#include "mv_sas.h" 27 28static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag) 29{ 30 if (task->lldd_task) { 31 struct mvs_slot_info *slot; 32 slot = task->lldd_task; 33 *tag = slot->slot_tag; 34 return 1; 35 } 36 return 0; 37} 38 39void mvs_tag_clear(struct mvs_info *mvi, u32 tag) 40{ 41 void *bitmap = mvi->tags; 42 clear_bit(tag, bitmap); 43} 44 45void mvs_tag_free(struct mvs_info *mvi, u32 tag) 46{ 47 mvs_tag_clear(mvi, tag); 48} 49 50void mvs_tag_set(struct mvs_info *mvi, unsigned int tag) 51{ 52 void *bitmap = mvi->tags; 53 set_bit(tag, bitmap); 54} 55 56inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) 57{ 58 unsigned int index, tag; 59 void *bitmap = mvi->tags; 60 61 index = find_first_zero_bit(bitmap, mvi->tags_num); 62 tag = index; 63 if (tag >= mvi->tags_num) 64 return -SAS_QUEUE_FULL; 65 mvs_tag_set(mvi, tag); 66 *tag_out = tag; 67 return 0; 68} 69 70void mvs_tag_init(struct mvs_info *mvi) 71{ 72 int i; 73 for (i = 0; i < mvi->tags_num; ++i) 74 mvs_tag_clear(mvi, i); 75} 76 77struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev) 78{ 79 unsigned long i = 0, j = 0, hi = 0; 80 struct sas_ha_struct *sha = dev->port->ha; 81 struct mvs_info *mvi = NULL; 82 struct asd_sas_phy *phy; 83 84 while (sha->sas_port[i]) { 85 if (sha->sas_port[i] == dev->port) { 86 phy = container_of(sha->sas_port[i]->phy_list.next, 87 struct asd_sas_phy, port_phy_el); 88 j = 0; 89 while (sha->sas_phy[j]) { 90 if (sha->sas_phy[j] == phy) 91 break; 92 j++; 93 } 94 break; 95 } 96 i++; 97 } 98 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; 99 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; 100 101 return mvi; 102 103} 104 105int mvs_find_dev_phyno(struct domain_device *dev, int *phyno) 106{ 107 unsigned long i = 0, j = 0, n = 0, num = 0; 108 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 109 struct mvs_info *mvi = mvi_dev->mvi_info; 110 struct sas_ha_struct *sha = dev->port->ha; 111 112 while (sha->sas_port[i]) { 113 if (sha->sas_port[i] == dev->port) { 114 struct asd_sas_phy *phy; 115 list_for_each_entry(phy, 116 &sha->sas_port[i]->phy_list, port_phy_el) { 117 j = 0; 118 while (sha->sas_phy[j]) { 119 if (sha->sas_phy[j] == phy) 120 break; 121 j++; 122 } 123 phyno[n] = (j >= mvi->chip->n_phy) ? 124 (j - mvi->chip->n_phy) : j; 125 num++; 126 n++; 127 } 128 break; 129 } 130 i++; 131 } 132 return num; 133} 134 135struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi, 136 u8 reg_set) 137{ 138 u32 dev_no; 139 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) { 140 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED) 141 continue; 142 143 if (mvi->devices[dev_no].taskfileset == reg_set) 144 return &mvi->devices[dev_no]; 145 } 146 return NULL; 147} 148 149static inline void mvs_free_reg_set(struct mvs_info *mvi, 150 struct mvs_device *dev) 151{ 152 if (!dev) { 153 mv_printk("device has been free.\n"); 154 return; 155 } 156 if (dev->taskfileset == MVS_ID_NOT_MAPPED) 157 return; 158 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset); 159} 160 161static inline u8 mvs_assign_reg_set(struct mvs_info *mvi, 162 struct mvs_device *dev) 163{ 164 if (dev->taskfileset != MVS_ID_NOT_MAPPED) 165 return 0; 166 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset); 167} 168 169void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard) 170{ 171 u32 no; 172 for_each_phy(phy_mask, phy_mask, no) { 173 if (!(phy_mask & 1)) 174 continue; 175 MVS_CHIP_DISP->phy_reset(mvi, no, hard); 176 } 177} 178 179int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, 180 void *funcdata) 181{ 182 int rc = 0, phy_id = sas_phy->id; 183 u32 tmp, i = 0, hi; 184 struct sas_ha_struct *sha = sas_phy->ha; 185 struct mvs_info *mvi = NULL; 186 187 while (sha->sas_phy[i]) { 188 if (sha->sas_phy[i] == sas_phy) 189 break; 190 i++; 191 } 192 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; 193 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; 194 195 switch (func) { 196 case PHY_FUNC_SET_LINK_RATE: 197 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata); 198 break; 199 200 case PHY_FUNC_HARD_RESET: 201 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id); 202 if (tmp & PHY_RST_HARD) 203 break; 204 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET); 205 break; 206 207 case PHY_FUNC_LINK_RESET: 208 MVS_CHIP_DISP->phy_enable(mvi, phy_id); 209 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET); 210 break; 211 212 case PHY_FUNC_DISABLE: 213 MVS_CHIP_DISP->phy_disable(mvi, phy_id); 214 break; 215 case PHY_FUNC_RELEASE_SPINUP_HOLD: 216 default: 217 rc = -EOPNOTSUPP; 218 } 219 msleep(200); 220 return rc; 221} 222 223void __devinit mvs_set_sas_addr(struct mvs_info *mvi, int port_id, 224 u32 off_lo, u32 off_hi, u64 sas_addr) 225{ 226 u32 lo = (u32)sas_addr; 227 u32 hi = (u32)(sas_addr>>32); 228 229 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo); 230 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo); 231 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi); 232 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi); 233} 234 235static void mvs_bytes_dmaed(struct mvs_info *mvi, int i) 236{ 237 struct mvs_phy *phy = &mvi->phy[i]; 238 struct asd_sas_phy *sas_phy = &phy->sas_phy; 239 struct sas_ha_struct *sas_ha; 240 if (!phy->phy_attached) 241 return; 242 243 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK) 244 && phy->phy_type & PORT_TYPE_SAS) { 245 return; 246 } 247 248 sas_ha = mvi->sas; 249 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); 250 251 if (sas_phy->phy) { 252 struct sas_phy *sphy = sas_phy->phy; 253 254 sphy->negotiated_linkrate = sas_phy->linkrate; 255 sphy->minimum_linkrate = phy->minimum_linkrate; 256 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; 257 sphy->maximum_linkrate = phy->maximum_linkrate; 258 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate(); 259 } 260 261 if (phy->phy_type & PORT_TYPE_SAS) { 262 struct sas_identify_frame *id; 263 264 id = (struct sas_identify_frame *)phy->frame_rcvd; 265 id->dev_type = phy->identify.device_type; 266 id->initiator_bits = SAS_PROTOCOL_ALL; 267 id->target_bits = phy->identify.target_port_protocols; 268 } else if (phy->phy_type & PORT_TYPE_SATA) { 269 /*Nothing*/ 270 } 271 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy); 272 273 sas_phy->frame_rcvd_size = phy->frame_rcvd_size; 274 275 mvi->sas->notify_port_event(sas_phy, 276 PORTE_BYTES_DMAED); 277} 278 279void mvs_scan_start(struct Scsi_Host *shost) 280{ 281 int i, j; 282 unsigned short core_nr; 283 struct mvs_info *mvi; 284 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); 285 struct mvs_prv_info *mvs_prv = sha->lldd_ha; 286 287 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host; 288 289 for (j = 0; j < core_nr; j++) { 290 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j]; 291 for (i = 0; i < mvi->chip->n_phy; ++i) 292 mvs_bytes_dmaed(mvi, i); 293 } 294 mvs_prv->scan_finished = 1; 295} 296 297int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time) 298{ 299 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); 300 struct mvs_prv_info *mvs_prv = sha->lldd_ha; 301 302 if (mvs_prv->scan_finished == 0) 303 return 0; 304 305 scsi_flush_work(shost); 306 return 1; 307} 308 309static int mvs_task_prep_smp(struct mvs_info *mvi, 310 struct mvs_task_exec_info *tei) 311{ 312 int elem, rc, i; 313 struct sas_task *task = tei->task; 314 struct mvs_cmd_hdr *hdr = tei->hdr; 315 struct domain_device *dev = task->dev; 316 struct asd_sas_port *sas_port = dev->port; 317 struct scatterlist *sg_req, *sg_resp; 318 u32 req_len, resp_len, tag = tei->tag; 319 void *buf_tmp; 320 u8 *buf_oaf; 321 dma_addr_t buf_tmp_dma; 322 void *buf_prd; 323 struct mvs_slot_info *slot = &mvi->slot_info[tag]; 324 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); 325 326 /* 327 * DMA-map SMP request, response buffers 328 */ 329 sg_req = &task->smp_task.smp_req; 330 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE); 331 if (!elem) 332 return -ENOMEM; 333 req_len = sg_dma_len(sg_req); 334 335 sg_resp = &task->smp_task.smp_resp; 336 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE); 337 if (!elem) { 338 rc = -ENOMEM; 339 goto err_out; 340 } 341 resp_len = SB_RFB_MAX; 342 343 /* must be in dwords */ 344 if ((req_len & 0x3) || (resp_len & 0x3)) { 345 rc = -EINVAL; 346 goto err_out_2; 347 } 348 349 /* 350 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 351 */ 352 353 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */ 354 buf_tmp = slot->buf; 355 buf_tmp_dma = slot->buf_dma; 356 357 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req)); 358 359 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 360 buf_oaf = buf_tmp; 361 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 362 363 buf_tmp += MVS_OAF_SZ; 364 buf_tmp_dma += MVS_OAF_SZ; 365 366 /* region 3: PRD table *********************************** */ 367 buf_prd = buf_tmp; 368 if (tei->n_elem) 369 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 370 else 371 hdr->prd_tbl = 0; 372 373 i = MVS_CHIP_DISP->prd_size() * tei->n_elem; 374 buf_tmp += i; 375 buf_tmp_dma += i; 376 377 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 378 slot->response = buf_tmp; 379 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 380 if (mvi->flags & MVF_FLAG_SOC) 381 hdr->reserved[0] = 0; 382 383 /* 384 * Fill in TX ring and command slot header 385 */ 386 slot->tx = mvi->tx_prod; 387 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) | 388 TXQ_MODE_I | tag | 389 (sas_port->phy_mask << TXQ_PHY_SHIFT)); 390 391 hdr->flags |= flags; 392 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4)); 393 hdr->tags = cpu_to_le32(tag); 394 hdr->data_len = 0; 395 396 /* generate open address frame hdr (first 12 bytes) */ 397 /* initiator, SMP, ftype 1h */ 398 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01; 399 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; 400 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */ 401 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 402 403 /* fill in PRD (scatter/gather) table, if any */ 404 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 405 406 return 0; 407 408err_out_2: 409 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1, 410 PCI_DMA_FROMDEVICE); 411err_out: 412 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1, 413 PCI_DMA_TODEVICE); 414 return rc; 415} 416 417static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag) 418{ 419 struct ata_queued_cmd *qc = task->uldd_task; 420 421 if (qc) { 422 if (qc->tf.command == ATA_CMD_FPDMA_WRITE || 423 qc->tf.command == ATA_CMD_FPDMA_READ) { 424 *tag = qc->tag; 425 return 1; 426 } 427 } 428 429 return 0; 430} 431 432static int mvs_task_prep_ata(struct mvs_info *mvi, 433 struct mvs_task_exec_info *tei) 434{ 435 struct sas_task *task = tei->task; 436 struct domain_device *dev = task->dev; 437 struct mvs_device *mvi_dev = dev->lldd_dev; 438 struct mvs_cmd_hdr *hdr = tei->hdr; 439 struct asd_sas_port *sas_port = dev->port; 440 struct mvs_slot_info *slot; 441 void *buf_prd; 442 u32 tag = tei->tag, hdr_tag; 443 u32 flags, del_q; 444 void *buf_tmp; 445 u8 *buf_cmd, *buf_oaf; 446 dma_addr_t buf_tmp_dma; 447 u32 i, req_len, resp_len; 448 const u32 max_resp_len = SB_RFB_MAX; 449 450 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) { 451 mv_dprintk("Have not enough regiset for dev %d.\n", 452 mvi_dev->device_id); 453 return -EBUSY; 454 } 455 slot = &mvi->slot_info[tag]; 456 slot->tx = mvi->tx_prod; 457 del_q = TXQ_MODE_I | tag | 458 (TXQ_CMD_STP << TXQ_CMD_SHIFT) | 459 (sas_port->phy_mask << TXQ_PHY_SHIFT) | 460 (mvi_dev->taskfileset << TXQ_SRS_SHIFT); 461 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q); 462 463 if (task->data_dir == DMA_FROM_DEVICE) 464 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT); 465 else 466 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); 467 468 if (task->ata_task.use_ncq) 469 flags |= MCH_FPDMA; 470 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) { 471 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI) 472 flags |= MCH_ATAPI; 473 } 474 475 hdr->flags = cpu_to_le32(flags); 476 477 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag)) 478 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3); 479 else 480 hdr_tag = tag; 481 482 hdr->tags = cpu_to_le32(hdr_tag); 483 484 hdr->data_len = cpu_to_le32(task->total_xfer_len); 485 486 /* 487 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 488 */ 489 490 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */ 491 buf_cmd = buf_tmp = slot->buf; 492 buf_tmp_dma = slot->buf_dma; 493 494 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); 495 496 buf_tmp += MVS_ATA_CMD_SZ; 497 buf_tmp_dma += MVS_ATA_CMD_SZ; 498 499 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 500 /* used for STP. unused for SATA? */ 501 buf_oaf = buf_tmp; 502 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 503 504 buf_tmp += MVS_OAF_SZ; 505 buf_tmp_dma += MVS_OAF_SZ; 506 507 /* region 3: PRD table ********************************************* */ 508 buf_prd = buf_tmp; 509 510 if (tei->n_elem) 511 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 512 else 513 hdr->prd_tbl = 0; 514 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count(); 515 516 buf_tmp += i; 517 buf_tmp_dma += i; 518 519 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 520 slot->response = buf_tmp; 521 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 522 if (mvi->flags & MVF_FLAG_SOC) 523 hdr->reserved[0] = 0; 524 525 req_len = sizeof(struct host_to_dev_fis); 526 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ - 527 sizeof(struct mvs_err_info) - i; 528 529 /* request, response lengths */ 530 resp_len = min(resp_len, max_resp_len); 531 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); 532 533 if (likely(!task->ata_task.device_control_reg_update)) 534 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */ 535 /* fill in command FIS and ATAPI CDB */ 536 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); 537 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) 538 memcpy(buf_cmd + STP_ATAPI_CMD, 539 task->ata_task.atapi_packet, 16); 540 541 /* generate open address frame hdr (first 12 bytes) */ 542 /* initiator, STP, ftype 1h */ 543 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1; 544 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; 545 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); 546 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 547 548 /* fill in PRD (scatter/gather) table, if any */ 549 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 550 551 if (task->data_dir == DMA_FROM_DEVICE) 552 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask, 553 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd); 554 555 return 0; 556} 557 558static int mvs_task_prep_ssp(struct mvs_info *mvi, 559 struct mvs_task_exec_info *tei, int is_tmf, 560 struct mvs_tmf_task *tmf) 561{ 562 struct sas_task *task = tei->task; 563 struct mvs_cmd_hdr *hdr = tei->hdr; 564 struct mvs_port *port = tei->port; 565 struct domain_device *dev = task->dev; 566 struct mvs_device *mvi_dev = dev->lldd_dev; 567 struct asd_sas_port *sas_port = dev->port; 568 struct mvs_slot_info *slot; 569 void *buf_prd; 570 struct ssp_frame_hdr *ssp_hdr; 571 void *buf_tmp; 572 u8 *buf_cmd, *buf_oaf, fburst = 0; 573 dma_addr_t buf_tmp_dma; 574 u32 flags; 575 u32 resp_len, req_len, i, tag = tei->tag; 576 const u32 max_resp_len = SB_RFB_MAX; 577 u32 phy_mask; 578 579 slot = &mvi->slot_info[tag]; 580 581 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap : 582 sas_port->phy_mask) & TXQ_PHY_MASK; 583 584 slot->tx = mvi->tx_prod; 585 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag | 586 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) | 587 (phy_mask << TXQ_PHY_SHIFT)); 588 589 flags = MCH_RETRY; 590 if (task->ssp_task.enable_first_burst) { 591 flags |= MCH_FBURST; 592 fburst = (1 << 7); 593 } 594 if (is_tmf) 595 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT); 596 else 597 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT); 598 599 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT)); 600 hdr->tags = cpu_to_le32(tag); 601 hdr->data_len = cpu_to_le32(task->total_xfer_len); 602 603 /* 604 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 605 */ 606 607 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */ 608 buf_cmd = buf_tmp = slot->buf; 609 buf_tmp_dma = slot->buf_dma; 610 611 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); 612 613 buf_tmp += MVS_SSP_CMD_SZ; 614 buf_tmp_dma += MVS_SSP_CMD_SZ; 615 616 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 617 buf_oaf = buf_tmp; 618 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 619 620 buf_tmp += MVS_OAF_SZ; 621 buf_tmp_dma += MVS_OAF_SZ; 622 623 /* region 3: PRD table ********************************************* */ 624 buf_prd = buf_tmp; 625 if (tei->n_elem) 626 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 627 else 628 hdr->prd_tbl = 0; 629 630 i = MVS_CHIP_DISP->prd_size() * tei->n_elem; 631 buf_tmp += i; 632 buf_tmp_dma += i; 633 634 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 635 slot->response = buf_tmp; 636 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 637 if (mvi->flags & MVF_FLAG_SOC) 638 hdr->reserved[0] = 0; 639 640 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ - 641 sizeof(struct mvs_err_info) - i; 642 resp_len = min(resp_len, max_resp_len); 643 644 req_len = sizeof(struct ssp_frame_hdr) + 28; 645 646 /* request, response lengths */ 647 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); 648 649 /* generate open address frame hdr (first 12 bytes) */ 650 /* initiator, SSP, ftype 1h */ 651 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1; 652 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; 653 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); 654 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 655 656 /* fill in SSP frame header (Command Table.SSP frame header) */ 657 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd; 658 659 if (is_tmf) 660 ssp_hdr->frame_type = SSP_TASK; 661 else 662 ssp_hdr->frame_type = SSP_COMMAND; 663 664 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr, 665 HASHED_SAS_ADDR_SIZE); 666 memcpy(ssp_hdr->hashed_src_addr, 667 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); 668 ssp_hdr->tag = cpu_to_be16(tag); 669 670 /* fill in IU for TASK and Command Frame */ 671 buf_cmd += sizeof(*ssp_hdr); 672 memcpy(buf_cmd, &task->ssp_task.LUN, 8); 673 674 if (ssp_hdr->frame_type != SSP_TASK) { 675 buf_cmd[9] = fburst | task->ssp_task.task_attr | 676 (task->ssp_task.task_prio << 3); 677 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16); 678 } else{ 679 buf_cmd[10] = tmf->tmf; 680 switch (tmf->tmf) { 681 case TMF_ABORT_TASK: 682 case TMF_QUERY_TASK: 683 buf_cmd[12] = 684 (tmf->tag_of_task_to_be_managed >> 8) & 0xff; 685 buf_cmd[13] = 686 tmf->tag_of_task_to_be_managed & 0xff; 687 break; 688 default: 689 break; 690 } 691 } 692 /* fill in PRD (scatter/gather) table, if any */ 693 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 694 return 0; 695} 696 697#define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE))) 698static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf, 699 struct mvs_tmf_task *tmf, int *pass) 700{ 701 struct domain_device *dev = task->dev; 702 struct mvs_device *mvi_dev = dev->lldd_dev; 703 struct mvs_task_exec_info tei; 704 struct mvs_slot_info *slot; 705 u32 tag = 0xdeadbeef, n_elem = 0; 706 int rc = 0; 707 708 if (!dev->port) { 709 struct task_status_struct *tsm = &task->task_status; 710 711 tsm->resp = SAS_TASK_UNDELIVERED; 712 tsm->stat = SAS_PHY_DOWN; 713 /* 714 * libsas will use dev->port, should 715 * not call task_done for sata 716 */ 717 if (dev->dev_type != SATA_DEV) 718 task->task_done(task); 719 return rc; 720 } 721 722 if (DEV_IS_GONE(mvi_dev)) { 723 if (mvi_dev) 724 mv_dprintk("device %d not ready.\n", 725 mvi_dev->device_id); 726 else 727 mv_dprintk("device %016llx not ready.\n", 728 SAS_ADDR(dev->sas_addr)); 729 730 rc = SAS_PHY_DOWN; 731 return rc; 732 } 733 tei.port = dev->port->lldd_port; 734 if (tei.port && !tei.port->port_attached && !tmf) { 735 if (sas_protocol_ata(task->task_proto)) { 736 struct task_status_struct *ts = &task->task_status; 737 mv_dprintk("SATA/STP port %d does not attach" 738 "device.\n", dev->port->id); 739 ts->resp = SAS_TASK_COMPLETE; 740 ts->stat = SAS_PHY_DOWN; 741 742 task->task_done(task); 743 744 } else { 745 struct task_status_struct *ts = &task->task_status; 746 mv_dprintk("SAS port %d does not attach" 747 "device.\n", dev->port->id); 748 ts->resp = SAS_TASK_UNDELIVERED; 749 ts->stat = SAS_PHY_DOWN; 750 task->task_done(task); 751 } 752 return rc; 753 } 754 755 if (!sas_protocol_ata(task->task_proto)) { 756 if (task->num_scatter) { 757 n_elem = dma_map_sg(mvi->dev, 758 task->scatter, 759 task->num_scatter, 760 task->data_dir); 761 if (!n_elem) { 762 rc = -ENOMEM; 763 goto prep_out; 764 } 765 } 766 } else { 767 n_elem = task->num_scatter; 768 } 769 770 rc = mvs_tag_alloc(mvi, &tag); 771 if (rc) 772 goto err_out; 773 774 slot = &mvi->slot_info[tag]; 775 776 task->lldd_task = NULL; 777 slot->n_elem = n_elem; 778 slot->slot_tag = tag; 779 780 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma); 781 if (!slot->buf) 782 goto err_out_tag; 783 memset(slot->buf, 0, MVS_SLOT_BUF_SZ); 784 785 tei.task = task; 786 tei.hdr = &mvi->slot[tag]; 787 tei.tag = tag; 788 tei.n_elem = n_elem; 789 switch (task->task_proto) { 790 case SAS_PROTOCOL_SMP: 791 rc = mvs_task_prep_smp(mvi, &tei); 792 break; 793 case SAS_PROTOCOL_SSP: 794 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf); 795 break; 796 case SAS_PROTOCOL_SATA: 797 case SAS_PROTOCOL_STP: 798 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: 799 rc = mvs_task_prep_ata(mvi, &tei); 800 break; 801 default: 802 dev_printk(KERN_ERR, mvi->dev, 803 "unknown sas_task proto: 0x%x\n", 804 task->task_proto); 805 rc = -EINVAL; 806 break; 807 } 808 809 if (rc) { 810 mv_dprintk("rc is %x\n", rc); 811 goto err_out_slot_buf; 812 } 813 slot->task = task; 814 slot->port = tei.port; 815 task->lldd_task = slot; 816 list_add_tail(&slot->entry, &tei.port->list); 817 spin_lock(&task->task_state_lock); 818 task->task_state_flags |= SAS_TASK_AT_INITIATOR; 819 spin_unlock(&task->task_state_lock); 820 821 mvi_dev->running_req++; 822 ++(*pass); 823 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1); 824 825 return rc; 826 827err_out_slot_buf: 828 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); 829err_out_tag: 830 mvs_tag_free(mvi, tag); 831err_out: 832 833 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc); 834 if (!sas_protocol_ata(task->task_proto)) 835 if (n_elem) 836 dma_unmap_sg(mvi->dev, task->scatter, n_elem, 837 task->data_dir); 838prep_out: 839 return rc; 840} 841 842static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags) 843{ 844 struct mvs_task_list *first = NULL; 845 846 for (; *num > 0; --*num) { 847 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags); 848 849 if (!mvs_list) 850 break; 851 852 INIT_LIST_HEAD(&mvs_list->list); 853 if (!first) 854 first = mvs_list; 855 else 856 list_add_tail(&mvs_list->list, &first->list); 857 858 } 859 860 return first; 861} 862 863static inline void mvs_task_free_list(struct mvs_task_list *mvs_list) 864{ 865 LIST_HEAD(list); 866 struct list_head *pos, *a; 867 struct mvs_task_list *mlist = NULL; 868 869 __list_add(&list, mvs_list->list.prev, &mvs_list->list); 870 871 list_for_each_safe(pos, a, &list) { 872 list_del_init(pos); 873 mlist = list_entry(pos, struct mvs_task_list, list); 874 kmem_cache_free(mvs_task_list_cache, mlist); 875 } 876} 877 878static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags, 879 struct completion *completion, int is_tmf, 880 struct mvs_tmf_task *tmf) 881{ 882 struct domain_device *dev = task->dev; 883 struct mvs_info *mvi = NULL; 884 u32 rc = 0; 885 u32 pass = 0; 886 unsigned long flags = 0; 887 888 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info; 889 890 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL)) 891 spin_unlock_irq(dev->sata_dev.ap->lock); 892 893 spin_lock_irqsave(&mvi->lock, flags); 894 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass); 895 if (rc) 896 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc); 897 898 if (likely(pass)) 899 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) & 900 (MVS_CHIP_SLOT_SZ - 1)); 901 spin_unlock_irqrestore(&mvi->lock, flags); 902 903 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL)) 904 spin_lock_irq(dev->sata_dev.ap->lock); 905 906 return rc; 907} 908 909static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags, 910 struct completion *completion, int is_tmf, 911 struct mvs_tmf_task *tmf) 912{ 913 struct domain_device *dev = task->dev; 914 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha; 915 struct mvs_info *mvi = NULL; 916 struct sas_task *t = task; 917 struct mvs_task_list *mvs_list = NULL, *a; 918 LIST_HEAD(q); 919 int pass[2] = {0}; 920 u32 rc = 0; 921 u32 n = num; 922 unsigned long flags = 0; 923 924 mvs_list = mvs_task_alloc_list(&n, gfp_flags); 925 if (n) { 926 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__); 927 rc = -ENOMEM; 928 goto free_list; 929 } 930 931 __list_add(&q, mvs_list->list.prev, &mvs_list->list); 932 933 list_for_each_entry(a, &q, list) { 934 a->task = t; 935 t = list_entry(t->list.next, struct sas_task, list); 936 } 937 938 list_for_each_entry(a, &q , list) { 939 940 t = a->task; 941 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info; 942 943 spin_lock_irqsave(&mvi->lock, flags); 944 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]); 945 if (rc) 946 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc); 947 spin_unlock_irqrestore(&mvi->lock, flags); 948 } 949 950 if (likely(pass[0])) 951 MVS_CHIP_DISP->start_delivery(mpi->mvi[0], 952 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1)); 953 954 if (likely(pass[1])) 955 MVS_CHIP_DISP->start_delivery(mpi->mvi[1], 956 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1)); 957 958 list_del_init(&q); 959 960free_list: 961 if (mvs_list) 962 mvs_task_free_list(mvs_list); 963 964 return rc; 965} 966 967int mvs_queue_command(struct sas_task *task, const int num, 968 gfp_t gfp_flags) 969{ 970 struct mvs_device *mvi_dev = task->dev->lldd_dev; 971 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas; 972 973 if (sas->lldd_max_execute_num < 2) 974 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL); 975 else 976 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL); 977} 978 979static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc) 980{ 981 u32 slot_idx = rx_desc & RXQ_SLOT_MASK; 982 mvs_tag_clear(mvi, slot_idx); 983} 984 985static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, 986 struct mvs_slot_info *slot, u32 slot_idx) 987{ 988 if (!slot->task) 989 return; 990 if (!sas_protocol_ata(task->task_proto)) 991 if (slot->n_elem) 992 dma_unmap_sg(mvi->dev, task->scatter, 993 slot->n_elem, task->data_dir); 994 995 switch (task->task_proto) { 996 case SAS_PROTOCOL_SMP: 997 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1, 998 PCI_DMA_FROMDEVICE); 999 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1, 1000 PCI_DMA_TODEVICE); 1001 break; 1002 1003 case SAS_PROTOCOL_SATA: 1004 case SAS_PROTOCOL_STP: 1005 case SAS_PROTOCOL_SSP: 1006 default: 1007 /* do nothing */ 1008 break; 1009 } 1010 1011 if (slot->buf) { 1012 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); 1013 slot->buf = NULL; 1014 } 1015 list_del_init(&slot->entry); 1016 task->lldd_task = NULL; 1017 slot->task = NULL; 1018 slot->port = NULL; 1019 slot->slot_tag = 0xFFFFFFFF; 1020 mvs_slot_free(mvi, slot_idx); 1021} 1022 1023static void mvs_update_wideport(struct mvs_info *mvi, int phy_no) 1024{ 1025 struct mvs_phy *phy = &mvi->phy[phy_no]; 1026 struct mvs_port *port = phy->port; 1027 int j, no; 1028 1029 for_each_phy(port->wide_port_phymap, j, no) { 1030 if (j & 1) { 1031 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, 1032 PHYR_WIDE_PORT); 1033 MVS_CHIP_DISP->write_port_cfg_data(mvi, no, 1034 port->wide_port_phymap); 1035 } else { 1036 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, 1037 PHYR_WIDE_PORT); 1038 MVS_CHIP_DISP->write_port_cfg_data(mvi, no, 1039 0); 1040 } 1041 } 1042} 1043 1044static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i) 1045{ 1046 u32 tmp; 1047 struct mvs_phy *phy = &mvi->phy[i]; 1048 struct mvs_port *port = phy->port; 1049 1050 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i); 1051 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) { 1052 if (!port) 1053 phy->phy_attached = 1; 1054 return tmp; 1055 } 1056 1057 if (port) { 1058 if (phy->phy_type & PORT_TYPE_SAS) { 1059 port->wide_port_phymap &= ~(1U << i); 1060 if (!port->wide_port_phymap) 1061 port->port_attached = 0; 1062 mvs_update_wideport(mvi, i); 1063 } else if (phy->phy_type & PORT_TYPE_SATA) 1064 port->port_attached = 0; 1065 phy->port = NULL; 1066 phy->phy_attached = 0; 1067 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA); 1068 } 1069 return 0; 1070} 1071 1072static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf) 1073{ 1074 u32 *s = (u32 *) buf; 1075 1076 if (!s) 1077 return NULL; 1078 1079 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3); 1080 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 1081 1082 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2); 1083 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 1084 1085 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1); 1086 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 1087 1088 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0); 1089 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 1090 1091 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01)) 1092 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10); 1093 1094 return s; 1095} 1096 1097static u32 mvs_is_sig_fis_received(u32 irq_status) 1098{ 1099 return irq_status & PHYEV_SIG_FIS; 1100} 1101 1102static void mvs_sig_remove_timer(struct mvs_phy *phy) 1103{ 1104 if (phy->timer.function) 1105 del_timer(&phy->timer); 1106 phy->timer.function = NULL; 1107} 1108 1109void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st) 1110{ 1111 struct mvs_phy *phy = &mvi->phy[i]; 1112 struct sas_identify_frame *id; 1113 1114 id = (struct sas_identify_frame *)phy->frame_rcvd; 1115 1116 if (get_st) { 1117 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i); 1118 phy->phy_status = mvs_is_phy_ready(mvi, i); 1119 } 1120 1121 if (phy->phy_status) { 1122 int oob_done = 0; 1123 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy; 1124 1125 oob_done = MVS_CHIP_DISP->oob_done(mvi, i); 1126 1127 MVS_CHIP_DISP->fix_phy_info(mvi, i, id); 1128 if (phy->phy_type & PORT_TYPE_SATA) { 1129 phy->identify.target_port_protocols = SAS_PROTOCOL_STP; 1130 if (mvs_is_sig_fis_received(phy->irq_status)) { 1131 mvs_sig_remove_timer(phy); 1132 phy->phy_attached = 1; 1133 phy->att_dev_sas_addr = 1134 i + mvi->id * mvi->chip->n_phy; 1135 if (oob_done) 1136 sas_phy->oob_mode = SATA_OOB_MODE; 1137 phy->frame_rcvd_size = 1138 sizeof(struct dev_to_host_fis); 1139 mvs_get_d2h_reg(mvi, i, id); 1140 } else { 1141 u32 tmp; 1142 dev_printk(KERN_DEBUG, mvi->dev, 1143 "Phy%d : No sig fis\n", i); 1144 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i); 1145 MVS_CHIP_DISP->write_port_irq_mask(mvi, i, 1146 tmp | PHYEV_SIG_FIS); 1147 phy->phy_attached = 0; 1148 phy->phy_type &= ~PORT_TYPE_SATA; 1149 goto out_done; 1150 } 1151 } else if (phy->phy_type & PORT_TYPE_SAS 1152 || phy->att_dev_info & PORT_SSP_INIT_MASK) { 1153 phy->phy_attached = 1; 1154 phy->identify.device_type = 1155 phy->att_dev_info & PORT_DEV_TYPE_MASK; 1156 1157 if (phy->identify.device_type == SAS_END_DEV) 1158 phy->identify.target_port_protocols = 1159 SAS_PROTOCOL_SSP; 1160 else if (phy->identify.device_type != NO_DEVICE) 1161 phy->identify.target_port_protocols = 1162 SAS_PROTOCOL_SMP; 1163 if (oob_done) 1164 sas_phy->oob_mode = SAS_OOB_MODE; 1165 phy->frame_rcvd_size = 1166 sizeof(struct sas_identify_frame); 1167 } 1168 memcpy(sas_phy->attached_sas_addr, 1169 &phy->att_dev_sas_addr, SAS_ADDR_SIZE); 1170 1171 if (MVS_CHIP_DISP->phy_work_around) 1172 MVS_CHIP_DISP->phy_work_around(mvi, i); 1173 } 1174 mv_dprintk("phy %d attach dev info is %x\n", 1175 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info); 1176 mv_dprintk("phy %d attach sas addr is %llx\n", 1177 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr); 1178out_done: 1179 if (get_st) 1180 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status); 1181} 1182 1183static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock) 1184{ 1185 struct sas_ha_struct *sas_ha = sas_phy->ha; 1186 struct mvs_info *mvi = NULL; int i = 0, hi; 1187 struct mvs_phy *phy = sas_phy->lldd_phy; 1188 struct asd_sas_port *sas_port = sas_phy->port; 1189 struct mvs_port *port; 1190 unsigned long flags = 0; 1191 if (!sas_port) 1192 return; 1193 1194 while (sas_ha->sas_phy[i]) { 1195 if (sas_ha->sas_phy[i] == sas_phy) 1196 break; 1197 i++; 1198 } 1199 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy; 1200 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi]; 1201 if (i >= mvi->chip->n_phy) 1202 port = &mvi->port[i - mvi->chip->n_phy]; 1203 else 1204 port = &mvi->port[i]; 1205 if (lock) 1206 spin_lock_irqsave(&mvi->lock, flags); 1207 port->port_attached = 1; 1208 phy->port = port; 1209 sas_port->lldd_port = port; 1210 if (phy->phy_type & PORT_TYPE_SAS) { 1211 port->wide_port_phymap = sas_port->phy_mask; 1212 mv_printk("set wide port phy map %x\n", sas_port->phy_mask); 1213 mvs_update_wideport(mvi, sas_phy->id); 1214 } 1215 if (lock) 1216 spin_unlock_irqrestore(&mvi->lock, flags); 1217} 1218 1219static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock) 1220{ 1221 struct domain_device *dev; 1222 struct mvs_phy *phy = sas_phy->lldd_phy; 1223 struct mvs_info *mvi = phy->mvi; 1224 struct asd_sas_port *port = sas_phy->port; 1225 int phy_no = 0; 1226 1227 while (phy != &mvi->phy[phy_no]) { 1228 phy_no++; 1229 if (phy_no >= MVS_MAX_PHYS) 1230 return; 1231 } 1232 list_for_each_entry(dev, &port->dev_list, dev_list_node) 1233 mvs_do_release_task(phy->mvi, phy_no, dev); 1234 1235} 1236 1237 1238void mvs_port_formed(struct asd_sas_phy *sas_phy) 1239{ 1240 mvs_port_notify_formed(sas_phy, 1); 1241} 1242 1243void mvs_port_deformed(struct asd_sas_phy *sas_phy) 1244{ 1245 mvs_port_notify_deformed(sas_phy, 1); 1246} 1247 1248struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi) 1249{ 1250 u32 dev; 1251 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) { 1252 if (mvi->devices[dev].dev_type == NO_DEVICE) { 1253 mvi->devices[dev].device_id = dev; 1254 return &mvi->devices[dev]; 1255 } 1256 } 1257 1258 if (dev == MVS_MAX_DEVICES) 1259 mv_printk("max support %d devices, ignore ..\n", 1260 MVS_MAX_DEVICES); 1261 1262 return NULL; 1263} 1264 1265void mvs_free_dev(struct mvs_device *mvi_dev) 1266{ 1267 u32 id = mvi_dev->device_id; 1268 memset(mvi_dev, 0, sizeof(*mvi_dev)); 1269 mvi_dev->device_id = id; 1270 mvi_dev->dev_type = NO_DEVICE; 1271 mvi_dev->dev_status = MVS_DEV_NORMAL; 1272 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED; 1273} 1274 1275int mvs_dev_found_notify(struct domain_device *dev, int lock) 1276{ 1277 unsigned long flags = 0; 1278 int res = 0; 1279 struct mvs_info *mvi = NULL; 1280 struct domain_device *parent_dev = dev->parent; 1281 struct mvs_device *mvi_device; 1282 1283 mvi = mvs_find_dev_mvi(dev); 1284 1285 if (lock) 1286 spin_lock_irqsave(&mvi->lock, flags); 1287 1288 mvi_device = mvs_alloc_dev(mvi); 1289 if (!mvi_device) { 1290 res = -1; 1291 goto found_out; 1292 } 1293 dev->lldd_dev = mvi_device; 1294 mvi_device->dev_status = MVS_DEV_NORMAL; 1295 mvi_device->dev_type = dev->dev_type; 1296 mvi_device->mvi_info = mvi; 1297 mvi_device->sas_device = dev; 1298 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { 1299 int phy_id; 1300 u8 phy_num = parent_dev->ex_dev.num_phys; 1301 struct ex_phy *phy; 1302 for (phy_id = 0; phy_id < phy_num; phy_id++) { 1303 phy = &parent_dev->ex_dev.ex_phy[phy_id]; 1304 if (SAS_ADDR(phy->attached_sas_addr) == 1305 SAS_ADDR(dev->sas_addr)) { 1306 mvi_device->attached_phy = phy_id; 1307 break; 1308 } 1309 } 1310 1311 if (phy_id == phy_num) { 1312 mv_printk("Error: no attached dev:%016llx" 1313 "at ex:%016llx.\n", 1314 SAS_ADDR(dev->sas_addr), 1315 SAS_ADDR(parent_dev->sas_addr)); 1316 res = -1; 1317 } 1318 } 1319 1320found_out: 1321 if (lock) 1322 spin_unlock_irqrestore(&mvi->lock, flags); 1323 return res; 1324} 1325 1326int mvs_dev_found(struct domain_device *dev) 1327{ 1328 return mvs_dev_found_notify(dev, 1); 1329} 1330 1331void mvs_dev_gone_notify(struct domain_device *dev) 1332{ 1333 unsigned long flags = 0; 1334 struct mvs_device *mvi_dev = dev->lldd_dev; 1335 struct mvs_info *mvi = mvi_dev->mvi_info; 1336 1337 spin_lock_irqsave(&mvi->lock, flags); 1338 1339 if (mvi_dev) { 1340 mv_dprintk("found dev[%d:%x] is gone.\n", 1341 mvi_dev->device_id, mvi_dev->dev_type); 1342 mvs_release_task(mvi, dev); 1343 mvs_free_reg_set(mvi, mvi_dev); 1344 mvs_free_dev(mvi_dev); 1345 } else { 1346 mv_dprintk("found dev has gone.\n"); 1347 } 1348 dev->lldd_dev = NULL; 1349 mvi_dev->sas_device = NULL; 1350 1351 spin_unlock_irqrestore(&mvi->lock, flags); 1352} 1353 1354 1355void mvs_dev_gone(struct domain_device *dev) 1356{ 1357 mvs_dev_gone_notify(dev); 1358} 1359 1360static void mvs_task_done(struct sas_task *task) 1361{ 1362 if (!del_timer(&task->timer)) 1363 return; 1364 complete(&task->completion); 1365} 1366 1367static void mvs_tmf_timedout(unsigned long data) 1368{ 1369 struct sas_task *task = (struct sas_task *)data; 1370 1371 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 1372 complete(&task->completion); 1373} 1374 1375#define MVS_TASK_TIMEOUT 20 1376static int mvs_exec_internal_tmf_task(struct domain_device *dev, 1377 void *parameter, u32 para_len, struct mvs_tmf_task *tmf) 1378{ 1379 int res, retry; 1380 struct sas_task *task = NULL; 1381 1382 for (retry = 0; retry < 3; retry++) { 1383 task = sas_alloc_task(GFP_KERNEL); 1384 if (!task) 1385 return -ENOMEM; 1386 1387 task->dev = dev; 1388 task->task_proto = dev->tproto; 1389 1390 memcpy(&task->ssp_task, parameter, para_len); 1391 task->task_done = mvs_task_done; 1392 1393 task->timer.data = (unsigned long) task; 1394 task->timer.function = mvs_tmf_timedout; 1395 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ; 1396 add_timer(&task->timer); 1397 1398 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf); 1399 1400 if (res) { 1401 del_timer(&task->timer); 1402 mv_printk("executing internel task failed:%d\n", res); 1403 goto ex_err; 1404 } 1405 1406 wait_for_completion(&task->completion); 1407 res = TMF_RESP_FUNC_FAILED; 1408 /* Even TMF timed out, return direct. */ 1409 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 1410 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 1411 mv_printk("TMF task[%x] timeout.\n", tmf->tmf); 1412 goto ex_err; 1413 } 1414 } 1415 1416 if (task->task_status.resp == SAS_TASK_COMPLETE && 1417 task->task_status.stat == SAM_STAT_GOOD) { 1418 res = TMF_RESP_FUNC_COMPLETE; 1419 break; 1420 } 1421 1422 if (task->task_status.resp == SAS_TASK_COMPLETE && 1423 task->task_status.stat == SAS_DATA_UNDERRUN) { 1424 /* no error, but return the number of bytes of 1425 * underrun */ 1426 res = task->task_status.residual; 1427 break; 1428 } 1429 1430 if (task->task_status.resp == SAS_TASK_COMPLETE && 1431 task->task_status.stat == SAS_DATA_OVERRUN) { 1432 mv_dprintk("blocked task error.\n"); 1433 res = -EMSGSIZE; 1434 break; 1435 } else { 1436 mv_dprintk(" task to dev %016llx response: 0x%x " 1437 "status 0x%x\n", 1438 SAS_ADDR(dev->sas_addr), 1439 task->task_status.resp, 1440 task->task_status.stat); 1441 sas_free_task(task); 1442 task = NULL; 1443 1444 } 1445 } 1446ex_err: 1447 BUG_ON(retry == 3 && task != NULL); 1448 sas_free_task(task); 1449 return res; 1450} 1451 1452static int mvs_debug_issue_ssp_tmf(struct domain_device *dev, 1453 u8 *lun, struct mvs_tmf_task *tmf) 1454{ 1455 struct sas_ssp_task ssp_task; 1456 if (!(dev->tproto & SAS_PROTOCOL_SSP)) 1457 return TMF_RESP_FUNC_ESUPP; 1458 1459 memcpy(ssp_task.LUN, lun, 8); 1460 1461 return mvs_exec_internal_tmf_task(dev, &ssp_task, 1462 sizeof(ssp_task), tmf); 1463} 1464 1465 1466/* Standard mandates link reset for ATA (type 0) 1467 and hard reset for SSP (type 1) , only for RECOVERY */ 1468static int mvs_debug_I_T_nexus_reset(struct domain_device *dev) 1469{ 1470 int rc; 1471 struct sas_phy *phy = sas_find_local_phy(dev); 1472 int reset_type = (dev->dev_type == SATA_DEV || 1473 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; 1474 rc = sas_phy_reset(phy, reset_type); 1475 msleep(2000); 1476 return rc; 1477} 1478 1479/* mandatory SAM-3 */ 1480int mvs_lu_reset(struct domain_device *dev, u8 *lun) 1481{ 1482 unsigned long flags; 1483 int rc = TMF_RESP_FUNC_FAILED; 1484 struct mvs_tmf_task tmf_task; 1485 struct mvs_device * mvi_dev = dev->lldd_dev; 1486 struct mvs_info *mvi = mvi_dev->mvi_info; 1487 1488 tmf_task.tmf = TMF_LU_RESET; 1489 mvi_dev->dev_status = MVS_DEV_EH; 1490 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1491 if (rc == TMF_RESP_FUNC_COMPLETE) { 1492 spin_lock_irqsave(&mvi->lock, flags); 1493 mvs_release_task(mvi, dev); 1494 spin_unlock_irqrestore(&mvi->lock, flags); 1495 } 1496 /* If failed, fall-through I_T_Nexus reset */ 1497 mv_printk("%s for device[%x]:rc= %d\n", __func__, 1498 mvi_dev->device_id, rc); 1499 return rc; 1500} 1501 1502int mvs_I_T_nexus_reset(struct domain_device *dev) 1503{ 1504 unsigned long flags; 1505 int rc = TMF_RESP_FUNC_FAILED; 1506 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev; 1507 struct mvs_info *mvi = mvi_dev->mvi_info; 1508 1509 if (mvi_dev->dev_status != MVS_DEV_EH) 1510 return TMF_RESP_FUNC_COMPLETE; 1511 else 1512 mvi_dev->dev_status = MVS_DEV_NORMAL; 1513 rc = mvs_debug_I_T_nexus_reset(dev); 1514 mv_printk("%s for device[%x]:rc= %d\n", 1515 __func__, mvi_dev->device_id, rc); 1516 1517 spin_lock_irqsave(&mvi->lock, flags); 1518 mvs_release_task(mvi, dev); 1519 spin_unlock_irqrestore(&mvi->lock, flags); 1520 1521 return rc; 1522} 1523/* optional SAM-3 */ 1524int mvs_query_task(struct sas_task *task) 1525{ 1526 u32 tag; 1527 struct scsi_lun lun; 1528 struct mvs_tmf_task tmf_task; 1529 int rc = TMF_RESP_FUNC_FAILED; 1530 1531 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1532 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; 1533 struct domain_device *dev = task->dev; 1534 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1535 struct mvs_info *mvi = mvi_dev->mvi_info; 1536 1537 int_to_scsilun(cmnd->device->lun, &lun); 1538 rc = mvs_find_tag(mvi, task, &tag); 1539 if (rc == 0) { 1540 rc = TMF_RESP_FUNC_FAILED; 1541 return rc; 1542 } 1543 1544 tmf_task.tmf = TMF_QUERY_TASK; 1545 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); 1546 1547 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1548 switch (rc) { 1549 /* The task is still in Lun, release it then */ 1550 case TMF_RESP_FUNC_SUCC: 1551 /* The task is not in Lun or failed, reset the phy */ 1552 case TMF_RESP_FUNC_FAILED: 1553 case TMF_RESP_FUNC_COMPLETE: 1554 break; 1555 } 1556 } 1557 mv_printk("%s:rc= %d\n", __func__, rc); 1558 return rc; 1559} 1560 1561/* mandatory SAM-3, still need free task/slot info */ 1562int mvs_abort_task(struct sas_task *task) 1563{ 1564 struct scsi_lun lun; 1565 struct mvs_tmf_task tmf_task; 1566 struct domain_device *dev = task->dev; 1567 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1568 struct mvs_info *mvi; 1569 int rc = TMF_RESP_FUNC_FAILED; 1570 unsigned long flags; 1571 u32 tag; 1572 1573 if (!mvi_dev) { 1574 mv_printk("Device has removed\n"); 1575 return TMF_RESP_FUNC_FAILED; 1576 } 1577 1578 mvi = mvi_dev->mvi_info; 1579 1580 spin_lock_irqsave(&task->task_state_lock, flags); 1581 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1582 spin_unlock_irqrestore(&task->task_state_lock, flags); 1583 rc = TMF_RESP_FUNC_COMPLETE; 1584 goto out; 1585 } 1586 spin_unlock_irqrestore(&task->task_state_lock, flags); 1587 mvi_dev->dev_status = MVS_DEV_EH; 1588 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1589 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; 1590 1591 int_to_scsilun(cmnd->device->lun, &lun); 1592 rc = mvs_find_tag(mvi, task, &tag); 1593 if (rc == 0) { 1594 mv_printk("No such tag in %s\n", __func__); 1595 rc = TMF_RESP_FUNC_FAILED; 1596 return rc; 1597 } 1598 1599 tmf_task.tmf = TMF_ABORT_TASK; 1600 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); 1601 1602 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1603 1604 /* if successful, clear the task and callback forwards.*/ 1605 if (rc == TMF_RESP_FUNC_COMPLETE) { 1606 u32 slot_no; 1607 struct mvs_slot_info *slot; 1608 1609 if (task->lldd_task) { 1610 slot = task->lldd_task; 1611 slot_no = (u32) (slot - mvi->slot_info); 1612 spin_lock_irqsave(&mvi->lock, flags); 1613 mvs_slot_complete(mvi, slot_no, 1); 1614 spin_unlock_irqrestore(&mvi->lock, flags); 1615 } 1616 } 1617 1618 } else if (task->task_proto & SAS_PROTOCOL_SATA || 1619 task->task_proto & SAS_PROTOCOL_STP) { 1620 if (SATA_DEV == dev->dev_type) { 1621 struct mvs_slot_info *slot = task->lldd_task; 1622 u32 slot_idx = (u32)(slot - mvi->slot_info); 1623 mv_dprintk("mvs_abort_task() mvi=%p task=%p " 1624 "slot=%p slot_idx=x%x\n", 1625 mvi, task, slot, slot_idx); 1626 mvs_tmf_timedout((unsigned long)task); 1627 mvs_slot_task_free(mvi, task, slot, slot_idx); 1628 rc = TMF_RESP_FUNC_COMPLETE; 1629 goto out; 1630 } 1631 1632 } 1633out: 1634 if (rc != TMF_RESP_FUNC_COMPLETE) 1635 mv_printk("%s:rc= %d\n", __func__, rc); 1636 return rc; 1637} 1638 1639int mvs_abort_task_set(struct domain_device *dev, u8 *lun) 1640{ 1641 int rc = TMF_RESP_FUNC_FAILED; 1642 struct mvs_tmf_task tmf_task; 1643 1644 tmf_task.tmf = TMF_ABORT_TASK_SET; 1645 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1646 1647 return rc; 1648} 1649 1650int mvs_clear_aca(struct domain_device *dev, u8 *lun) 1651{ 1652 int rc = TMF_RESP_FUNC_FAILED; 1653 struct mvs_tmf_task tmf_task; 1654 1655 tmf_task.tmf = TMF_CLEAR_ACA; 1656 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1657 1658 return rc; 1659} 1660 1661int mvs_clear_task_set(struct domain_device *dev, u8 *lun) 1662{ 1663 int rc = TMF_RESP_FUNC_FAILED; 1664 struct mvs_tmf_task tmf_task; 1665 1666 tmf_task.tmf = TMF_CLEAR_TASK_SET; 1667 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1668 1669 return rc; 1670} 1671 1672static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task, 1673 u32 slot_idx, int err) 1674{ 1675 struct mvs_device *mvi_dev = task->dev->lldd_dev; 1676 struct task_status_struct *tstat = &task->task_status; 1677 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf; 1678 int stat = SAM_STAT_GOOD; 1679 1680 1681 resp->frame_len = sizeof(struct dev_to_host_fis); 1682 memcpy(&resp->ending_fis[0], 1683 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset), 1684 sizeof(struct dev_to_host_fis)); 1685 tstat->buf_valid_size = sizeof(*resp); 1686 if (unlikely(err)) { 1687 if (unlikely(err & CMD_ISS_STPD)) 1688 stat = SAS_OPEN_REJECT; 1689 else 1690 stat = SAS_PROTO_RESPONSE; 1691 } 1692 1693 return stat; 1694} 1695 1696void mvs_set_sense(u8 *buffer, int len, int d_sense, 1697 int key, int asc, int ascq) 1698{ 1699 memset(buffer, 0, len); 1700 1701 if (d_sense) { 1702 /* Descriptor format */ 1703 if (len < 4) { 1704 mv_printk("Length %d of sense buffer too small to " 1705 "fit sense %x:%x:%x", len, key, asc, ascq); 1706 } 1707 1708 buffer[0] = 0x72; /* Response Code */ 1709 if (len > 1) 1710 buffer[1] = key; /* Sense Key */ 1711 if (len > 2) 1712 buffer[2] = asc; /* ASC */ 1713 if (len > 3) 1714 buffer[3] = ascq; /* ASCQ */ 1715 } else { 1716 if (len < 14) { 1717 mv_printk("Length %d of sense buffer too small to " 1718 "fit sense %x:%x:%x", len, key, asc, ascq); 1719 } 1720 1721 buffer[0] = 0x70; /* Response Code */ 1722 if (len > 2) 1723 buffer[2] = key; /* Sense Key */ 1724 if (len > 7) 1725 buffer[7] = 0x0a; /* Additional Sense Length */ 1726 if (len > 12) 1727 buffer[12] = asc; /* ASC */ 1728 if (len > 13) 1729 buffer[13] = ascq; /* ASCQ */ 1730 } 1731 1732 return; 1733} 1734 1735void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu, 1736 u8 key, u8 asc, u8 asc_q) 1737{ 1738 iu->datapres = 2; 1739 iu->response_data_len = 0; 1740 iu->sense_data_len = 17; 1741 iu->status = 02; 1742 mvs_set_sense(iu->sense_data, 17, 0, 1743 key, asc, asc_q); 1744} 1745 1746static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task, 1747 u32 slot_idx) 1748{ 1749 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; 1750 int stat; 1751 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response); 1752 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1)); 1753 u32 tfs = 0; 1754 enum mvs_port_type type = PORT_TYPE_SAS; 1755 1756 if (err_dw0 & CMD_ISS_STPD) 1757 MVS_CHIP_DISP->issue_stop(mvi, type, tfs); 1758 1759 MVS_CHIP_DISP->command_active(mvi, slot_idx); 1760 1761 stat = SAM_STAT_CHECK_CONDITION; 1762 switch (task->task_proto) { 1763 case SAS_PROTOCOL_SSP: 1764 { 1765 stat = SAS_ABORTED_TASK; 1766 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) { 1767 struct ssp_response_iu *iu = slot->response + 1768 sizeof(struct mvs_err_info); 1769 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01); 1770 sas_ssp_task_response(mvi->dev, task, iu); 1771 stat = SAM_STAT_CHECK_CONDITION; 1772 } 1773 if (err_dw1 & bit(31)) 1774 mv_printk("reuse same slot, retry command.\n"); 1775 break; 1776 } 1777 case SAS_PROTOCOL_SMP: 1778 stat = SAM_STAT_CHECK_CONDITION; 1779 break; 1780 1781 case SAS_PROTOCOL_SATA: 1782 case SAS_PROTOCOL_STP: 1783 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: 1784 { 1785 task->ata_task.use_ncq = 0; 1786 stat = SAS_PROTO_RESPONSE; 1787 mvs_sata_done(mvi, task, slot_idx, err_dw0); 1788 } 1789 break; 1790 default: 1791 break; 1792 } 1793 1794 return stat; 1795} 1796 1797int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) 1798{ 1799 u32 slot_idx = rx_desc & RXQ_SLOT_MASK; 1800 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; 1801 struct sas_task *task = slot->task; 1802 struct mvs_device *mvi_dev = NULL; 1803 struct task_status_struct *tstat; 1804 struct domain_device *dev; 1805 u32 aborted; 1806 1807 void *to; 1808 enum exec_status sts; 1809 1810 if (unlikely(!task || !task->lldd_task || !task->dev)) 1811 return -1; 1812 1813 tstat = &task->task_status; 1814 dev = task->dev; 1815 mvi_dev = dev->lldd_dev; 1816 1817 spin_lock(&task->task_state_lock); 1818 task->task_state_flags &= 1819 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR); 1820 task->task_state_flags |= SAS_TASK_STATE_DONE; 1821 /* race condition*/ 1822 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED; 1823 spin_unlock(&task->task_state_lock); 1824 1825 memset(tstat, 0, sizeof(*tstat)); 1826 tstat->resp = SAS_TASK_COMPLETE; 1827 1828 if (unlikely(aborted)) { 1829 tstat->stat = SAS_ABORTED_TASK; 1830 if (mvi_dev && mvi_dev->running_req) 1831 mvi_dev->running_req--; 1832 if (sas_protocol_ata(task->task_proto)) 1833 mvs_free_reg_set(mvi, mvi_dev); 1834 1835 mvs_slot_task_free(mvi, task, slot, slot_idx); 1836 return -1; 1837 } 1838 1839 /* when no device attaching, go ahead and complete by error handling*/ 1840 if (unlikely(!mvi_dev || flags)) { 1841 if (!mvi_dev) 1842 mv_dprintk("port has not device.\n"); 1843 tstat->stat = SAS_PHY_DOWN; 1844 goto out; 1845 } 1846 1847 /* error info record present */ 1848 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) { 1849 mv_dprintk("port %d slot %d rx_desc %X has error info" 1850 "%016llX.\n", slot->port->sas_port.id, slot_idx, 1851 rx_desc, (u64)(*(u64 *)slot->response)); 1852 tstat->stat = mvs_slot_err(mvi, task, slot_idx); 1853 tstat->resp = SAS_TASK_COMPLETE; 1854 goto out; 1855 } 1856 1857 switch (task->task_proto) { 1858 case SAS_PROTOCOL_SSP: 1859 /* hw says status == 0, datapres == 0 */ 1860 if (rx_desc & RXQ_GOOD) { 1861 tstat->stat = SAM_STAT_GOOD; 1862 tstat->resp = SAS_TASK_COMPLETE; 1863 } 1864 /* response frame present */ 1865 else if (rx_desc & RXQ_RSP) { 1866 struct ssp_response_iu *iu = slot->response + 1867 sizeof(struct mvs_err_info); 1868 sas_ssp_task_response(mvi->dev, task, iu); 1869 } else 1870 tstat->stat = SAM_STAT_CHECK_CONDITION; 1871 break; 1872 1873 case SAS_PROTOCOL_SMP: { 1874 struct scatterlist *sg_resp = &task->smp_task.smp_resp; 1875 tstat->stat = SAM_STAT_GOOD; 1876 to = kmap_atomic(sg_page(sg_resp), KM_IRQ0); 1877 memcpy(to + sg_resp->offset, 1878 slot->response + sizeof(struct mvs_err_info), 1879 sg_dma_len(sg_resp)); 1880 kunmap_atomic(to, KM_IRQ0); 1881 break; 1882 } 1883 1884 case SAS_PROTOCOL_SATA: 1885 case SAS_PROTOCOL_STP: 1886 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: { 1887 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0); 1888 break; 1889 } 1890 1891 default: 1892 tstat->stat = SAM_STAT_CHECK_CONDITION; 1893 break; 1894 } 1895 if (!slot->port->port_attached) { 1896 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id); 1897 tstat->stat = SAS_PHY_DOWN; 1898 } 1899 1900 1901out: 1902 if (mvi_dev && mvi_dev->running_req) { 1903 mvi_dev->running_req--; 1904 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req) 1905 mvs_free_reg_set(mvi, mvi_dev); 1906 } 1907 mvs_slot_task_free(mvi, task, slot, slot_idx); 1908 sts = tstat->stat; 1909 1910 spin_unlock(&mvi->lock); 1911 if (task->task_done) 1912 task->task_done(task); 1913 1914 spin_lock(&mvi->lock); 1915 1916 return sts; 1917} 1918 1919void mvs_do_release_task(struct mvs_info *mvi, 1920 int phy_no, struct domain_device *dev) 1921{ 1922 u32 slot_idx; 1923 struct mvs_phy *phy; 1924 struct mvs_port *port; 1925 struct mvs_slot_info *slot, *slot2; 1926 1927 phy = &mvi->phy[phy_no]; 1928 port = phy->port; 1929 if (!port) 1930 return; 1931 /* clean cmpl queue in case request is already finished */ 1932 mvs_int_rx(mvi, false); 1933 1934 1935 1936 list_for_each_entry_safe(slot, slot2, &port->list, entry) { 1937 struct sas_task *task; 1938 slot_idx = (u32) (slot - mvi->slot_info); 1939 task = slot->task; 1940 1941 if (dev && task->dev != dev) 1942 continue; 1943 1944 mv_printk("Release slot [%x] tag[%x], task [%p]:\n", 1945 slot_idx, slot->slot_tag, task); 1946 MVS_CHIP_DISP->command_active(mvi, slot_idx); 1947 1948 mvs_slot_complete(mvi, slot_idx, 1); 1949 } 1950} 1951 1952void mvs_release_task(struct mvs_info *mvi, 1953 struct domain_device *dev) 1954{ 1955 int i, phyno[WIDE_PORT_MAX_PHY], num; 1956 num = mvs_find_dev_phyno(dev, phyno); 1957 for (i = 0; i < num; i++) 1958 mvs_do_release_task(mvi, phyno[i], dev); 1959} 1960 1961static void mvs_phy_disconnected(struct mvs_phy *phy) 1962{ 1963 phy->phy_attached = 0; 1964 phy->att_dev_info = 0; 1965 phy->att_dev_sas_addr = 0; 1966} 1967 1968static void mvs_work_queue(struct work_struct *work) 1969{ 1970 struct delayed_work *dw = container_of(work, struct delayed_work, work); 1971 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q); 1972 struct mvs_info *mvi = mwq->mvi; 1973 unsigned long flags; 1974 u32 phy_no = (unsigned long) mwq->data; 1975 struct sas_ha_struct *sas_ha = mvi->sas; 1976 struct mvs_phy *phy = &mvi->phy[phy_no]; 1977 struct asd_sas_phy *sas_phy = &phy->sas_phy; 1978 1979 spin_lock_irqsave(&mvi->lock, flags); 1980 if (mwq->handler & PHY_PLUG_EVENT) { 1981 1982 if (phy->phy_event & PHY_PLUG_OUT) { 1983 u32 tmp; 1984 struct sas_identify_frame *id; 1985 id = (struct sas_identify_frame *)phy->frame_rcvd; 1986 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no); 1987 phy->phy_event &= ~PHY_PLUG_OUT; 1988 if (!(tmp & PHY_READY_MASK)) { 1989 sas_phy_disconnected(sas_phy); 1990 mvs_phy_disconnected(phy); 1991 sas_ha->notify_phy_event(sas_phy, 1992 PHYE_LOSS_OF_SIGNAL); 1993 mv_dprintk("phy%d Removed Device\n", phy_no); 1994 } else { 1995 MVS_CHIP_DISP->detect_porttype(mvi, phy_no); 1996 mvs_update_phyinfo(mvi, phy_no, 1); 1997 mvs_bytes_dmaed(mvi, phy_no); 1998 mvs_port_notify_formed(sas_phy, 0); 1999 mv_dprintk("phy%d Attached Device\n", phy_no); 2000 } 2001 } 2002 } else if (mwq->handler & EXP_BRCT_CHG) { 2003 phy->phy_event &= ~EXP_BRCT_CHG; 2004 sas_ha->notify_port_event(sas_phy, 2005 PORTE_BROADCAST_RCVD); 2006 mv_dprintk("phy%d Got Broadcast Change\n", phy_no); 2007 } 2008 list_del(&mwq->entry); 2009 spin_unlock_irqrestore(&mvi->lock, flags); 2010 kfree(mwq); 2011} 2012 2013static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler) 2014{ 2015 struct mvs_wq *mwq; 2016 int ret = 0; 2017 2018 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC); 2019 if (mwq) { 2020 mwq->mvi = mvi; 2021 mwq->data = data; 2022 mwq->handler = handler; 2023 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq); 2024 list_add_tail(&mwq->entry, &mvi->wq_list); 2025 schedule_delayed_work(&mwq->work_q, HZ * 2); 2026 } else 2027 ret = -ENOMEM; 2028 2029 return ret; 2030} 2031 2032static void mvs_sig_time_out(unsigned long tphy) 2033{ 2034 struct mvs_phy *phy = (struct mvs_phy *)tphy; 2035 struct mvs_info *mvi = phy->mvi; 2036 u8 phy_no; 2037 2038 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) { 2039 if (&mvi->phy[phy_no] == phy) { 2040 mv_dprintk("Get signature time out, reset phy %d\n", 2041 phy_no+mvi->id*mvi->chip->n_phy); 2042 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET); 2043 } 2044 } 2045} 2046 2047void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events) 2048{ 2049 u32 tmp; 2050 struct mvs_phy *phy = &mvi->phy[phy_no]; 2051 2052 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no); 2053 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status); 2054 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy, 2055 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no)); 2056 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy, 2057 phy->irq_status); 2058 2059 /* 2060 * events is port event now , 2061 * we need check the interrupt status which belongs to per port. 2062 */ 2063 2064 if (phy->irq_status & PHYEV_DCDR_ERR) { 2065 mv_dprintk("phy %d STP decoding error.\n", 2066 phy_no + mvi->id*mvi->chip->n_phy); 2067 } 2068 2069 if (phy->irq_status & PHYEV_POOF) { 2070 mdelay(500); 2071 if (!(phy->phy_event & PHY_PLUG_OUT)) { 2072 int dev_sata = phy->phy_type & PORT_TYPE_SATA; 2073 int ready; 2074 mvs_do_release_task(mvi, phy_no, NULL); 2075 phy->phy_event |= PHY_PLUG_OUT; 2076 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1); 2077 mvs_handle_event(mvi, 2078 (void *)(unsigned long)phy_no, 2079 PHY_PLUG_EVENT); 2080 ready = mvs_is_phy_ready(mvi, phy_no); 2081 if (ready || dev_sata) { 2082 if (MVS_CHIP_DISP->stp_reset) 2083 MVS_CHIP_DISP->stp_reset(mvi, 2084 phy_no); 2085 else 2086 MVS_CHIP_DISP->phy_reset(mvi, 2087 phy_no, MVS_SOFT_RESET); 2088 return; 2089 } 2090 } 2091 } 2092 2093 if (phy->irq_status & PHYEV_COMWAKE) { 2094 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no); 2095 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no, 2096 tmp | PHYEV_SIG_FIS); 2097 if (phy->timer.function == NULL) { 2098 phy->timer.data = (unsigned long)phy; 2099 phy->timer.function = mvs_sig_time_out; 2100 phy->timer.expires = jiffies + 5*HZ; 2101 add_timer(&phy->timer); 2102 } 2103 } 2104 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) { 2105 phy->phy_status = mvs_is_phy_ready(mvi, phy_no); 2106 mv_dprintk("notify plug in on phy[%d]\n", phy_no); 2107 if (phy->phy_status) { 2108 mdelay(10); 2109 MVS_CHIP_DISP->detect_porttype(mvi, phy_no); 2110 if (phy->phy_type & PORT_TYPE_SATA) { 2111 tmp = MVS_CHIP_DISP->read_port_irq_mask( 2112 mvi, phy_no); 2113 tmp &= ~PHYEV_SIG_FIS; 2114 MVS_CHIP_DISP->write_port_irq_mask(mvi, 2115 phy_no, tmp); 2116 } 2117 mvs_update_phyinfo(mvi, phy_no, 0); 2118 if (phy->phy_type & PORT_TYPE_SAS) { 2119 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE); 2120 mdelay(10); 2121 } 2122 2123 mvs_bytes_dmaed(mvi, phy_no); 2124 /* whether driver is going to handle hot plug */ 2125 if (phy->phy_event & PHY_PLUG_OUT) { 2126 mvs_port_notify_formed(&phy->sas_phy, 0); 2127 phy->phy_event &= ~PHY_PLUG_OUT; 2128 } 2129 } else { 2130 mv_dprintk("plugin interrupt but phy%d is gone\n", 2131 phy_no + mvi->id*mvi->chip->n_phy); 2132 } 2133 } else if (phy->irq_status & PHYEV_BROAD_CH) { 2134 mv_dprintk("phy %d broadcast change.\n", 2135 phy_no + mvi->id*mvi->chip->n_phy); 2136 mvs_handle_event(mvi, (void *)(unsigned long)phy_no, 2137 EXP_BRCT_CHG); 2138 } 2139} 2140 2141int mvs_int_rx(struct mvs_info *mvi, bool self_clear) 2142{ 2143 u32 rx_prod_idx, rx_desc; 2144 bool attn = false; 2145 2146 /* the first dword in the RX ring is special: it contains 2147 * a mirror of the hardware's RX producer index, so that 2148 * we don't have to stall the CPU reading that register. 2149 * The actual RX ring is offset by one dword, due to this. 2150 */ 2151 rx_prod_idx = mvi->rx_cons; 2152 mvi->rx_cons = le32_to_cpu(mvi->rx[0]); 2153 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */ 2154 return 0; 2155 2156 /* The CMPL_Q may come late, read from register and try again 2157 * note: if coalescing is enabled, 2158 * it will need to read from register every time for sure 2159 */ 2160 if (unlikely(mvi->rx_cons == rx_prod_idx)) 2161 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK; 2162 2163 if (mvi->rx_cons == rx_prod_idx) 2164 return 0; 2165 2166 while (mvi->rx_cons != rx_prod_idx) { 2167 /* increment our internal RX consumer pointer */ 2168 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1); 2169 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]); 2170 2171 if (likely(rx_desc & RXQ_DONE)) 2172 mvs_slot_complete(mvi, rx_desc, 0); 2173 if (rx_desc & RXQ_ATTN) { 2174 attn = true; 2175 } else if (rx_desc & RXQ_ERR) { 2176 if (!(rx_desc & RXQ_DONE)) 2177 mvs_slot_complete(mvi, rx_desc, 0); 2178 } else if (rx_desc & RXQ_SLOT_RESET) { 2179 mvs_slot_free(mvi, rx_desc); 2180 } 2181 } 2182 2183 if (attn && self_clear) 2184 MVS_CHIP_DISP->int_full(mvi); 2185 return 0; 2186} 2187 2188