mv_sas.c revision b89e8f539ff8bcf2a1464578fa91cb96cc433fc3
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} 104 105/* FIXME */ 106int mvs_find_dev_phyno(struct domain_device *dev, int *phyno) 107{ 108 unsigned long i = 0, j = 0, n = 0, num = 0; 109 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 110 struct mvs_info *mvi = mvi_dev->mvi_info; 111 struct sas_ha_struct *sha = dev->port->ha; 112 113 while (sha->sas_port[i]) { 114 if (sha->sas_port[i] == dev->port) { 115 struct asd_sas_phy *phy; 116 list_for_each_entry(phy, 117 &sha->sas_port[i]->phy_list, port_phy_el) { 118 j = 0; 119 while (sha->sas_phy[j]) { 120 if (sha->sas_phy[j] == phy) 121 break; 122 j++; 123 } 124 phyno[n] = (j >= mvi->chip->n_phy) ? 125 (j - mvi->chip->n_phy) : j; 126 num++; 127 n++; 128 } 129 break; 130 } 131 i++; 132 } 133 return num; 134} 135 136struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi, 137 u8 reg_set) 138{ 139 u32 dev_no; 140 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) { 141 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED) 142 continue; 143 144 if (mvi->devices[dev_no].taskfileset == reg_set) 145 return &mvi->devices[dev_no]; 146 } 147 return NULL; 148} 149 150static inline void mvs_free_reg_set(struct mvs_info *mvi, 151 struct mvs_device *dev) 152{ 153 if (!dev) { 154 mv_printk("device has been free.\n"); 155 return; 156 } 157 if (dev->taskfileset == MVS_ID_NOT_MAPPED) 158 return; 159 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset); 160} 161 162static inline u8 mvs_assign_reg_set(struct mvs_info *mvi, 163 struct mvs_device *dev) 164{ 165 if (dev->taskfileset != MVS_ID_NOT_MAPPED) 166 return 0; 167 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset); 168} 169 170void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard) 171{ 172 u32 no; 173 for_each_phy(phy_mask, phy_mask, no) { 174 if (!(phy_mask & 1)) 175 continue; 176 MVS_CHIP_DISP->phy_reset(mvi, no, hard); 177 } 178} 179 180/* FIXME: locking? */ 181int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, 182 void *funcdata) 183{ 184 int rc = 0, phy_id = sas_phy->id; 185 u32 tmp, i = 0, hi; 186 struct sas_ha_struct *sha = sas_phy->ha; 187 struct mvs_info *mvi = NULL; 188 189 while (sha->sas_phy[i]) { 190 if (sha->sas_phy[i] == sas_phy) 191 break; 192 i++; 193 } 194 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; 195 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; 196 197 switch (func) { 198 case PHY_FUNC_SET_LINK_RATE: 199 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata); 200 break; 201 202 case PHY_FUNC_HARD_RESET: 203 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id); 204 if (tmp & PHY_RST_HARD) 205 break; 206 MVS_CHIP_DISP->phy_reset(mvi, phy_id, 1); 207 break; 208 209 case PHY_FUNC_LINK_RESET: 210 MVS_CHIP_DISP->phy_enable(mvi, phy_id); 211 MVS_CHIP_DISP->phy_reset(mvi, phy_id, 0); 212 break; 213 214 case PHY_FUNC_DISABLE: 215 MVS_CHIP_DISP->phy_disable(mvi, phy_id); 216 break; 217 case PHY_FUNC_RELEASE_SPINUP_HOLD: 218 default: 219 rc = -EOPNOTSUPP; 220 } 221 msleep(200); 222 return rc; 223} 224 225void __devinit mvs_set_sas_addr(struct mvs_info *mvi, int port_id, 226 u32 off_lo, u32 off_hi, u64 sas_addr) 227{ 228 u32 lo = (u32)sas_addr; 229 u32 hi = (u32)(sas_addr>>32); 230 231 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo); 232 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo); 233 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi); 234 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi); 235} 236 237static void mvs_bytes_dmaed(struct mvs_info *mvi, int i) 238{ 239 struct mvs_phy *phy = &mvi->phy[i]; 240 struct asd_sas_phy *sas_phy = &phy->sas_phy; 241 struct sas_ha_struct *sas_ha; 242 if (!phy->phy_attached) 243 return; 244 245 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK) 246 && phy->phy_type & PORT_TYPE_SAS) { 247 return; 248 } 249 250 sas_ha = mvi->sas; 251 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); 252 253 if (sas_phy->phy) { 254 struct sas_phy *sphy = sas_phy->phy; 255 256 sphy->negotiated_linkrate = sas_phy->linkrate; 257 sphy->minimum_linkrate = phy->minimum_linkrate; 258 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; 259 sphy->maximum_linkrate = phy->maximum_linkrate; 260 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate(); 261 } 262 263 if (phy->phy_type & PORT_TYPE_SAS) { 264 struct sas_identify_frame *id; 265 266 id = (struct sas_identify_frame *)phy->frame_rcvd; 267 id->dev_type = phy->identify.device_type; 268 id->initiator_bits = SAS_PROTOCOL_ALL; 269 id->target_bits = phy->identify.target_port_protocols; 270 } else if (phy->phy_type & PORT_TYPE_SATA) { 271 /*Nothing*/ 272 } 273 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy); 274 275 sas_phy->frame_rcvd_size = phy->frame_rcvd_size; 276 277 mvi->sas->notify_port_event(sas_phy, 278 PORTE_BYTES_DMAED); 279} 280 281int mvs_slave_alloc(struct scsi_device *scsi_dev) 282{ 283 struct domain_device *dev = sdev_to_domain_dev(scsi_dev); 284 if (dev_is_sata(dev)) { 285 /* We don't need to rescan targets 286 * if REPORT_LUNS request is failed 287 */ 288 if (scsi_dev->lun > 0) 289 return -ENXIO; 290 scsi_dev->tagged_supported = 1; 291 } 292 293 return sas_slave_alloc(scsi_dev); 294} 295 296int mvs_slave_configure(struct scsi_device *sdev) 297{ 298 struct domain_device *dev = sdev_to_domain_dev(sdev); 299 int ret = sas_slave_configure(sdev); 300 301 if (ret) 302 return ret; 303 if (dev_is_sata(dev)) { 304 } 305 return 0; 306} 307 308void mvs_scan_start(struct Scsi_Host *shost) 309{ 310 int i, j; 311 unsigned short core_nr; 312 struct mvs_info *mvi; 313 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); 314 315 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host; 316 317 for (j = 0; j < core_nr; j++) { 318 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j]; 319 for (i = 0; i < mvi->chip->n_phy; ++i) 320 mvs_bytes_dmaed(mvi, i); 321 } 322} 323 324int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time) 325{ 326 /* give the phy enabling interrupt event time to come in (1s 327 * is empirically about all it takes) */ 328 if (time < HZ) 329 return 0; 330 /* Wait for discovery to finish */ 331 scsi_flush_work(shost); 332 return 1; 333} 334 335static int mvs_task_prep_smp(struct mvs_info *mvi, 336 struct mvs_task_exec_info *tei) 337{ 338 int elem, rc, i; 339 struct sas_task *task = tei->task; 340 struct mvs_cmd_hdr *hdr = tei->hdr; 341 struct domain_device *dev = task->dev; 342 struct asd_sas_port *sas_port = dev->port; 343 struct scatterlist *sg_req, *sg_resp; 344 u32 req_len, resp_len, tag = tei->tag; 345 void *buf_tmp; 346 u8 *buf_oaf; 347 dma_addr_t buf_tmp_dma; 348 void *buf_prd; 349 struct mvs_slot_info *slot = &mvi->slot_info[tag]; 350 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); 351 352 /* 353 * DMA-map SMP request, response buffers 354 */ 355 sg_req = &task->smp_task.smp_req; 356 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE); 357 if (!elem) 358 return -ENOMEM; 359 req_len = sg_dma_len(sg_req); 360 361 sg_resp = &task->smp_task.smp_resp; 362 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE); 363 if (!elem) { 364 rc = -ENOMEM; 365 goto err_out; 366 } 367 resp_len = SB_RFB_MAX; 368 369 /* must be in dwords */ 370 if ((req_len & 0x3) || (resp_len & 0x3)) { 371 rc = -EINVAL; 372 goto err_out_2; 373 } 374 375 /* 376 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 377 */ 378 379 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */ 380 buf_tmp = slot->buf; 381 buf_tmp_dma = slot->buf_dma; 382 383 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req)); 384 385 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 386 buf_oaf = buf_tmp; 387 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 388 389 buf_tmp += MVS_OAF_SZ; 390 buf_tmp_dma += MVS_OAF_SZ; 391 392 /* region 3: PRD table *********************************** */ 393 buf_prd = buf_tmp; 394 if (tei->n_elem) 395 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 396 else 397 hdr->prd_tbl = 0; 398 399 i = MVS_CHIP_DISP->prd_size() * tei->n_elem; 400 buf_tmp += i; 401 buf_tmp_dma += i; 402 403 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 404 slot->response = buf_tmp; 405 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 406 if (mvi->flags & MVF_FLAG_SOC) 407 hdr->reserved[0] = 0; 408 409 /* 410 * Fill in TX ring and command slot header 411 */ 412 slot->tx = mvi->tx_prod; 413 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) | 414 TXQ_MODE_I | tag | 415 (sas_port->phy_mask << TXQ_PHY_SHIFT)); 416 417 hdr->flags |= flags; 418 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4)); 419 hdr->tags = cpu_to_le32(tag); 420 hdr->data_len = 0; 421 422 /* generate open address frame hdr (first 12 bytes) */ 423 /* initiator, SMP, ftype 1h */ 424 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01; 425 buf_oaf[1] = dev->linkrate & 0xf; 426 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */ 427 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 428 429 /* fill in PRD (scatter/gather) table, if any */ 430 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 431 432 return 0; 433 434err_out_2: 435 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1, 436 PCI_DMA_FROMDEVICE); 437err_out: 438 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1, 439 PCI_DMA_TODEVICE); 440 return rc; 441} 442 443static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag) 444{ 445 struct ata_queued_cmd *qc = task->uldd_task; 446 447 if (qc) { 448 if (qc->tf.command == ATA_CMD_FPDMA_WRITE || 449 qc->tf.command == ATA_CMD_FPDMA_READ) { 450 *tag = qc->tag; 451 return 1; 452 } 453 } 454 455 return 0; 456} 457 458static int mvs_task_prep_ata(struct mvs_info *mvi, 459 struct mvs_task_exec_info *tei) 460{ 461 struct sas_task *task = tei->task; 462 struct domain_device *dev = task->dev; 463 struct mvs_device *mvi_dev = dev->lldd_dev; 464 struct mvs_cmd_hdr *hdr = tei->hdr; 465 struct asd_sas_port *sas_port = dev->port; 466 struct mvs_slot_info *slot; 467 void *buf_prd; 468 u32 tag = tei->tag, hdr_tag; 469 u32 flags, del_q; 470 void *buf_tmp; 471 u8 *buf_cmd, *buf_oaf; 472 dma_addr_t buf_tmp_dma; 473 u32 i, req_len, resp_len; 474 const u32 max_resp_len = SB_RFB_MAX; 475 476 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) { 477 mv_dprintk("Have not enough regiset for dev %d.\n", 478 mvi_dev->device_id); 479 return -EBUSY; 480 } 481 slot = &mvi->slot_info[tag]; 482 slot->tx = mvi->tx_prod; 483 del_q = TXQ_MODE_I | tag | 484 (TXQ_CMD_STP << TXQ_CMD_SHIFT) | 485 (sas_port->phy_mask << TXQ_PHY_SHIFT) | 486 (mvi_dev->taskfileset << TXQ_SRS_SHIFT); 487 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q); 488 489 if (task->data_dir == DMA_FROM_DEVICE) 490 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT); 491 else 492 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); 493 494 if (task->ata_task.use_ncq) 495 flags |= MCH_FPDMA; 496 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) { 497 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI) 498 flags |= MCH_ATAPI; 499 } 500 501 /* FIXME: fill in port multiplier number */ 502 503 hdr->flags = cpu_to_le32(flags); 504 505 /* FIXME: the low order order 5 bits for the TAG if enable NCQ */ 506 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag)) 507 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3); 508 else 509 hdr_tag = tag; 510 511 hdr->tags = cpu_to_le32(hdr_tag); 512 513 hdr->data_len = cpu_to_le32(task->total_xfer_len); 514 515 /* 516 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 517 */ 518 519 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */ 520 buf_cmd = buf_tmp = slot->buf; 521 buf_tmp_dma = slot->buf_dma; 522 523 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); 524 525 buf_tmp += MVS_ATA_CMD_SZ; 526 buf_tmp_dma += MVS_ATA_CMD_SZ; 527 528 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 529 /* used for STP. unused for SATA? */ 530 buf_oaf = buf_tmp; 531 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 532 533 buf_tmp += MVS_OAF_SZ; 534 buf_tmp_dma += MVS_OAF_SZ; 535 536 /* region 3: PRD table ********************************************* */ 537 buf_prd = buf_tmp; 538 539 if (tei->n_elem) 540 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 541 else 542 hdr->prd_tbl = 0; 543 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count(); 544 545 buf_tmp += i; 546 buf_tmp_dma += i; 547 548 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 549 /* FIXME: probably unused, for SATA. kept here just in case 550 * we get a STP/SATA error information record 551 */ 552 slot->response = buf_tmp; 553 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 554 if (mvi->flags & MVF_FLAG_SOC) 555 hdr->reserved[0] = 0; 556 557 req_len = sizeof(struct host_to_dev_fis); 558 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ - 559 sizeof(struct mvs_err_info) - i; 560 561 /* request, response lengths */ 562 resp_len = min(resp_len, max_resp_len); 563 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); 564 565 if (likely(!task->ata_task.device_control_reg_update)) 566 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */ 567 /* fill in command FIS and ATAPI CDB */ 568 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); 569 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) 570 memcpy(buf_cmd + STP_ATAPI_CMD, 571 task->ata_task.atapi_packet, 16); 572 573 /* generate open address frame hdr (first 12 bytes) */ 574 /* initiator, STP, ftype 1h */ 575 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1; 576 buf_oaf[1] = dev->linkrate & 0xf; 577 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); 578 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 579 580 /* fill in PRD (scatter/gather) table, if any */ 581 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 582 583 if (task->data_dir == DMA_FROM_DEVICE) 584 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask, 585 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd); 586 587 return 0; 588} 589 590static int mvs_task_prep_ssp(struct mvs_info *mvi, 591 struct mvs_task_exec_info *tei, int is_tmf, 592 struct mvs_tmf_task *tmf) 593{ 594 struct sas_task *task = tei->task; 595 struct mvs_cmd_hdr *hdr = tei->hdr; 596 struct mvs_port *port = tei->port; 597 struct domain_device *dev = task->dev; 598 struct mvs_device *mvi_dev = dev->lldd_dev; 599 struct asd_sas_port *sas_port = dev->port; 600 struct mvs_slot_info *slot; 601 void *buf_prd; 602 struct ssp_frame_hdr *ssp_hdr; 603 void *buf_tmp; 604 u8 *buf_cmd, *buf_oaf, fburst = 0; 605 dma_addr_t buf_tmp_dma; 606 u32 flags; 607 u32 resp_len, req_len, i, tag = tei->tag; 608 const u32 max_resp_len = SB_RFB_MAX; 609 u32 phy_mask; 610 611 slot = &mvi->slot_info[tag]; 612 613 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap : 614 sas_port->phy_mask) & TXQ_PHY_MASK; 615 616 slot->tx = mvi->tx_prod; 617 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag | 618 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) | 619 (phy_mask << TXQ_PHY_SHIFT)); 620 621 flags = MCH_RETRY; 622 if (task->ssp_task.enable_first_burst) { 623 flags |= MCH_FBURST; 624 fburst = (1 << 7); 625 } 626 if (is_tmf) 627 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT); 628 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT)); 629 hdr->tags = cpu_to_le32(tag); 630 hdr->data_len = cpu_to_le32(task->total_xfer_len); 631 632 /* 633 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 634 */ 635 636 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */ 637 buf_cmd = buf_tmp = slot->buf; 638 buf_tmp_dma = slot->buf_dma; 639 640 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); 641 642 buf_tmp += MVS_SSP_CMD_SZ; 643 buf_tmp_dma += MVS_SSP_CMD_SZ; 644 645 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 646 buf_oaf = buf_tmp; 647 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 648 649 buf_tmp += MVS_OAF_SZ; 650 buf_tmp_dma += MVS_OAF_SZ; 651 652 /* region 3: PRD table ********************************************* */ 653 buf_prd = buf_tmp; 654 if (tei->n_elem) 655 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 656 else 657 hdr->prd_tbl = 0; 658 659 i = MVS_CHIP_DISP->prd_size() * tei->n_elem; 660 buf_tmp += i; 661 buf_tmp_dma += i; 662 663 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 664 slot->response = buf_tmp; 665 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 666 if (mvi->flags & MVF_FLAG_SOC) 667 hdr->reserved[0] = 0; 668 669 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ - 670 sizeof(struct mvs_err_info) - i; 671 resp_len = min(resp_len, max_resp_len); 672 673 req_len = sizeof(struct ssp_frame_hdr) + 28; 674 675 /* request, response lengths */ 676 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); 677 678 /* generate open address frame hdr (first 12 bytes) */ 679 /* initiator, SSP, ftype 1h */ 680 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1; 681 buf_oaf[1] = dev->linkrate & 0xf; 682 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); 683 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 684 685 /* fill in SSP frame header (Command Table.SSP frame header) */ 686 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd; 687 688 if (is_tmf) 689 ssp_hdr->frame_type = SSP_TASK; 690 else 691 ssp_hdr->frame_type = SSP_COMMAND; 692 693 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr, 694 HASHED_SAS_ADDR_SIZE); 695 memcpy(ssp_hdr->hashed_src_addr, 696 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); 697 ssp_hdr->tag = cpu_to_be16(tag); 698 699 /* fill in IU for TASK and Command Frame */ 700 buf_cmd += sizeof(*ssp_hdr); 701 memcpy(buf_cmd, &task->ssp_task.LUN, 8); 702 703 if (ssp_hdr->frame_type != SSP_TASK) { 704 buf_cmd[9] = fburst | task->ssp_task.task_attr | 705 (task->ssp_task.task_prio << 3); 706 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16); 707 } else{ 708 buf_cmd[10] = tmf->tmf; 709 switch (tmf->tmf) { 710 case TMF_ABORT_TASK: 711 case TMF_QUERY_TASK: 712 buf_cmd[12] = 713 (tmf->tag_of_task_to_be_managed >> 8) & 0xff; 714 buf_cmd[13] = 715 tmf->tag_of_task_to_be_managed & 0xff; 716 break; 717 default: 718 break; 719 } 720 } 721 /* fill in PRD (scatter/gather) table, if any */ 722 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 723 return 0; 724} 725 726#define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE))) 727static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf, 728 struct mvs_tmf_task *tmf, int *pass) 729{ 730 struct domain_device *dev = task->dev; 731 struct mvs_device *mvi_dev = dev->lldd_dev; 732 struct mvs_task_exec_info tei; 733 struct mvs_slot_info *slot; 734 u32 tag = 0xdeadbeef, n_elem = 0; 735 int rc = 0; 736 737 if (!dev->port) { 738 struct task_status_struct *tsm = &task->task_status; 739 740 tsm->resp = SAS_TASK_UNDELIVERED; 741 tsm->stat = SAS_PHY_DOWN; 742 /* 743 * libsas will use dev->port, should 744 * not call task_done for sata 745 */ 746 if (dev->dev_type != SATA_DEV) 747 task->task_done(task); 748 return rc; 749 } 750 751 if (DEV_IS_GONE(mvi_dev)) { 752 if (mvi_dev) 753 mv_dprintk("device %d not ready.\n", 754 mvi_dev->device_id); 755 else 756 mv_dprintk("device %016llx not ready.\n", 757 SAS_ADDR(dev->sas_addr)); 758 759 rc = SAS_PHY_DOWN; 760 return rc; 761 } 762 tei.port = dev->port->lldd_port; 763 if (tei.port && !tei.port->port_attached && !tmf) { 764 if (sas_protocol_ata(task->task_proto)) { 765 struct task_status_struct *ts = &task->task_status; 766 mv_dprintk("SATA/STP port %d does not attach" 767 "device.\n", dev->port->id); 768 ts->resp = SAS_TASK_COMPLETE; 769 ts->stat = SAS_PHY_DOWN; 770 771 task->task_done(task); 772 773 } else { 774 struct task_status_struct *ts = &task->task_status; 775 mv_dprintk("SAS port %d does not attach" 776 "device.\n", dev->port->id); 777 ts->resp = SAS_TASK_UNDELIVERED; 778 ts->stat = SAS_PHY_DOWN; 779 task->task_done(task); 780 } 781 return rc; 782 } 783 784 if (!sas_protocol_ata(task->task_proto)) { 785 if (task->num_scatter) { 786 n_elem = dma_map_sg(mvi->dev, 787 task->scatter, 788 task->num_scatter, 789 task->data_dir); 790 if (!n_elem) { 791 rc = -ENOMEM; 792 goto prep_out; 793 } 794 } 795 } else { 796 n_elem = task->num_scatter; 797 } 798 799 rc = mvs_tag_alloc(mvi, &tag); 800 if (rc) 801 goto err_out; 802 803 slot = &mvi->slot_info[tag]; 804 805 task->lldd_task = NULL; 806 slot->n_elem = n_elem; 807 slot->slot_tag = tag; 808 809 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma); 810 if (!slot->buf) 811 goto err_out_tag; 812 memset(slot->buf, 0, MVS_SLOT_BUF_SZ); 813 814 tei.task = task; 815 tei.hdr = &mvi->slot[tag]; 816 tei.tag = tag; 817 tei.n_elem = n_elem; 818 switch (task->task_proto) { 819 case SAS_PROTOCOL_SMP: 820 rc = mvs_task_prep_smp(mvi, &tei); 821 break; 822 case SAS_PROTOCOL_SSP: 823 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf); 824 break; 825 case SAS_PROTOCOL_SATA: 826 case SAS_PROTOCOL_STP: 827 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: 828 rc = mvs_task_prep_ata(mvi, &tei); 829 break; 830 default: 831 dev_printk(KERN_ERR, mvi->dev, 832 "unknown sas_task proto: 0x%x\n", 833 task->task_proto); 834 rc = -EINVAL; 835 break; 836 } 837 838 if (rc) { 839 mv_dprintk("rc is %x\n", rc); 840 goto err_out_slot_buf; 841 } 842 slot->task = task; 843 slot->port = tei.port; 844 task->lldd_task = slot; 845 list_add_tail(&slot->entry, &tei.port->list); 846 spin_lock(&task->task_state_lock); 847 task->task_state_flags |= SAS_TASK_AT_INITIATOR; 848 spin_unlock(&task->task_state_lock); 849 850 mvi_dev->running_req++; 851 ++(*pass); 852 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1); 853 854 return rc; 855 856err_out_slot_buf: 857 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); 858err_out_tag: 859 mvs_tag_free(mvi, tag); 860err_out: 861 862 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc); 863 if (!sas_protocol_ata(task->task_proto)) 864 if (n_elem) 865 dma_unmap_sg(mvi->dev, task->scatter, n_elem, 866 task->data_dir); 867prep_out: 868 return rc; 869} 870 871static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags) 872{ 873 struct mvs_task_list *first = NULL; 874 875 for (; *num > 0; --*num) { 876 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags); 877 878 if (!mvs_list) 879 break; 880 881 INIT_LIST_HEAD(&mvs_list->list); 882 if (!first) 883 first = mvs_list; 884 else 885 list_add_tail(&mvs_list->list, &first->list); 886 887 } 888 889 return first; 890} 891 892static inline void mvs_task_free_list(struct mvs_task_list *mvs_list) 893{ 894 LIST_HEAD(list); 895 struct list_head *pos, *a; 896 struct mvs_task_list *mlist = NULL; 897 898 __list_add(&list, mvs_list->list.prev, &mvs_list->list); 899 900 list_for_each_safe(pos, a, &list) { 901 list_del_init(pos); 902 mlist = list_entry(pos, struct mvs_task_list, list); 903 kmem_cache_free(mvs_task_list_cache, mlist); 904 } 905} 906 907static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags, 908 struct completion *completion, int is_tmf, 909 struct mvs_tmf_task *tmf) 910{ 911 struct domain_device *dev = task->dev; 912 struct mvs_info *mvi = NULL; 913 u32 rc = 0; 914 u32 pass = 0; 915 unsigned long flags = 0; 916 917 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info; 918 919 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL)) 920 spin_unlock_irq(dev->sata_dev.ap->lock); 921 922 spin_lock_irqsave(&mvi->lock, flags); 923 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass); 924 if (rc) 925 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc); 926 927 if (likely(pass)) 928 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) & 929 (MVS_CHIP_SLOT_SZ - 1)); 930 spin_unlock_irqrestore(&mvi->lock, flags); 931 932 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL)) 933 spin_lock_irq(dev->sata_dev.ap->lock); 934 935 return rc; 936} 937 938static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags, 939 struct completion *completion, int is_tmf, 940 struct mvs_tmf_task *tmf) 941{ 942 struct domain_device *dev = task->dev; 943 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha; 944 struct mvs_info *mvi = NULL; 945 struct sas_task *t = task; 946 struct mvs_task_list *mvs_list = NULL, *a; 947 LIST_HEAD(q); 948 int pass[2] = {0}; 949 u32 rc = 0; 950 u32 n = num; 951 unsigned long flags = 0; 952 953 mvs_list = mvs_task_alloc_list(&n, gfp_flags); 954 if (n) { 955 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__); 956 rc = -ENOMEM; 957 goto free_list; 958 } 959 960 __list_add(&q, mvs_list->list.prev, &mvs_list->list); 961 962 list_for_each_entry(a, &q, list) { 963 a->task = t; 964 t = list_entry(t->list.next, struct sas_task, list); 965 } 966 967 list_for_each_entry(a, &q , list) { 968 969 t = a->task; 970 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info; 971 972 spin_lock_irqsave(&mvi->lock, flags); 973 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]); 974 if (rc) 975 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc); 976 spin_unlock_irqrestore(&mvi->lock, flags); 977 } 978 979 if (likely(pass[0])) 980 MVS_CHIP_DISP->start_delivery(mpi->mvi[0], 981 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1)); 982 983 if (likely(pass[1])) 984 MVS_CHIP_DISP->start_delivery(mpi->mvi[1], 985 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1)); 986 987 list_del_init(&q); 988 989free_list: 990 if (mvs_list) 991 mvs_task_free_list(mvs_list); 992 993 return rc; 994} 995 996int mvs_queue_command(struct sas_task *task, const int num, 997 gfp_t gfp_flags) 998{ 999 struct mvs_device *mvi_dev = task->dev->lldd_dev; 1000 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas; 1001 1002 if (sas->lldd_max_execute_num < 2) 1003 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL); 1004 else 1005 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL); 1006} 1007 1008static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc) 1009{ 1010 u32 slot_idx = rx_desc & RXQ_SLOT_MASK; 1011 mvs_tag_clear(mvi, slot_idx); 1012} 1013 1014static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, 1015 struct mvs_slot_info *slot, u32 slot_idx) 1016{ 1017 if (!slot->task) 1018 return; 1019 if (!sas_protocol_ata(task->task_proto)) 1020 if (slot->n_elem) 1021 dma_unmap_sg(mvi->dev, task->scatter, 1022 slot->n_elem, task->data_dir); 1023 1024 switch (task->task_proto) { 1025 case SAS_PROTOCOL_SMP: 1026 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1, 1027 PCI_DMA_FROMDEVICE); 1028 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1, 1029 PCI_DMA_TODEVICE); 1030 break; 1031 1032 case SAS_PROTOCOL_SATA: 1033 case SAS_PROTOCOL_STP: 1034 case SAS_PROTOCOL_SSP: 1035 default: 1036 /* do nothing */ 1037 break; 1038 } 1039 1040 if (slot->buf) { 1041 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); 1042 slot->buf = NULL; 1043 } 1044 list_del_init(&slot->entry); 1045 task->lldd_task = NULL; 1046 slot->task = NULL; 1047 slot->port = NULL; 1048 slot->slot_tag = 0xFFFFFFFF; 1049 mvs_slot_free(mvi, slot_idx); 1050} 1051 1052static void mvs_update_wideport(struct mvs_info *mvi, int i) 1053{ 1054 struct mvs_phy *phy = &mvi->phy[i]; 1055 struct mvs_port *port = phy->port; 1056 int j, no; 1057 1058 for_each_phy(port->wide_port_phymap, j, no) { 1059 if (j & 1) { 1060 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, 1061 PHYR_WIDE_PORT); 1062 MVS_CHIP_DISP->write_port_cfg_data(mvi, no, 1063 port->wide_port_phymap); 1064 } else { 1065 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, 1066 PHYR_WIDE_PORT); 1067 MVS_CHIP_DISP->write_port_cfg_data(mvi, no, 1068 0); 1069 } 1070 } 1071} 1072 1073static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i) 1074{ 1075 u32 tmp; 1076 struct mvs_phy *phy = &mvi->phy[i]; 1077 struct mvs_port *port = phy->port; 1078 1079 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i); 1080 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) { 1081 if (!port) 1082 phy->phy_attached = 1; 1083 return tmp; 1084 } 1085 1086 if (port) { 1087 if (phy->phy_type & PORT_TYPE_SAS) { 1088 port->wide_port_phymap &= ~(1U << i); 1089 if (!port->wide_port_phymap) 1090 port->port_attached = 0; 1091 mvs_update_wideport(mvi, i); 1092 } else if (phy->phy_type & PORT_TYPE_SATA) 1093 port->port_attached = 0; 1094 phy->port = NULL; 1095 phy->phy_attached = 0; 1096 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA); 1097 } 1098 return 0; 1099} 1100 1101static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf) 1102{ 1103 u32 *s = (u32 *) buf; 1104 1105 if (!s) 1106 return NULL; 1107 1108 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3); 1109 s[3] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i); 1110 1111 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2); 1112 s[2] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i); 1113 1114 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1); 1115 s[1] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i); 1116 1117 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0); 1118 s[0] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i); 1119 1120 /* Workaround: take some ATAPI devices for ATA */ 1121 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01)) 1122 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10); 1123 1124 return s; 1125} 1126 1127static u32 mvs_is_sig_fis_received(u32 irq_status) 1128{ 1129 return irq_status & PHYEV_SIG_FIS; 1130} 1131 1132static void mvs_sig_remove_timer(struct mvs_phy *phy) 1133{ 1134 if (phy->timer.function) 1135 del_timer(&phy->timer); 1136 phy->timer.function = NULL; 1137} 1138 1139void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st) 1140{ 1141 struct mvs_phy *phy = &mvi->phy[i]; 1142 struct sas_identify_frame *id; 1143 1144 id = (struct sas_identify_frame *)phy->frame_rcvd; 1145 1146 if (get_st) { 1147 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i); 1148 phy->phy_status = mvs_is_phy_ready(mvi, i); 1149 } 1150 1151 if (phy->phy_status) { 1152 int oob_done = 0; 1153 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy; 1154 1155 oob_done = MVS_CHIP_DISP->oob_done(mvi, i); 1156 1157 MVS_CHIP_DISP->fix_phy_info(mvi, i, id); 1158 if (phy->phy_type & PORT_TYPE_SATA) { 1159 phy->identify.target_port_protocols = SAS_PROTOCOL_STP; 1160 if (mvs_is_sig_fis_received(phy->irq_status)) { 1161 mvs_sig_remove_timer(phy); 1162 phy->phy_attached = 1; 1163 phy->att_dev_sas_addr = 1164 i + mvi->id * mvi->chip->n_phy; 1165 if (oob_done) 1166 sas_phy->oob_mode = SATA_OOB_MODE; 1167 phy->frame_rcvd_size = 1168 sizeof(struct dev_to_host_fis); 1169 mvs_get_d2h_reg(mvi, i, id); 1170 } else { 1171 u32 tmp; 1172 dev_printk(KERN_DEBUG, mvi->dev, 1173 "Phy%d : No sig fis\n", i); 1174 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i); 1175 MVS_CHIP_DISP->write_port_irq_mask(mvi, i, 1176 tmp | PHYEV_SIG_FIS); 1177 phy->phy_attached = 0; 1178 phy->phy_type &= ~PORT_TYPE_SATA; 1179 goto out_done; 1180 } 1181 } else if (phy->phy_type & PORT_TYPE_SAS 1182 || phy->att_dev_info & PORT_SSP_INIT_MASK) { 1183 phy->phy_attached = 1; 1184 phy->identify.device_type = 1185 phy->att_dev_info & PORT_DEV_TYPE_MASK; 1186 1187 if (phy->identify.device_type == SAS_END_DEV) 1188 phy->identify.target_port_protocols = 1189 SAS_PROTOCOL_SSP; 1190 else if (phy->identify.device_type != NO_DEVICE) 1191 phy->identify.target_port_protocols = 1192 SAS_PROTOCOL_SMP; 1193 if (oob_done) 1194 sas_phy->oob_mode = SAS_OOB_MODE; 1195 phy->frame_rcvd_size = 1196 sizeof(struct sas_identify_frame); 1197 } 1198 memcpy(sas_phy->attached_sas_addr, 1199 &phy->att_dev_sas_addr, SAS_ADDR_SIZE); 1200 1201 if (MVS_CHIP_DISP->phy_work_around) 1202 MVS_CHIP_DISP->phy_work_around(mvi, i); 1203 } 1204 mv_dprintk("port %d attach dev info is %x\n", 1205 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info); 1206 mv_dprintk("port %d attach sas addr is %llx\n", 1207 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr); 1208out_done: 1209 if (get_st) 1210 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status); 1211} 1212 1213static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock) 1214{ 1215 struct sas_ha_struct *sas_ha = sas_phy->ha; 1216 struct mvs_info *mvi = NULL; int i = 0, hi; 1217 struct mvs_phy *phy = sas_phy->lldd_phy; 1218 struct asd_sas_port *sas_port = sas_phy->port; 1219 struct mvs_port *port; 1220 unsigned long flags = 0; 1221 if (!sas_port) 1222 return; 1223 1224 while (sas_ha->sas_phy[i]) { 1225 if (sas_ha->sas_phy[i] == sas_phy) 1226 break; 1227 i++; 1228 } 1229 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy; 1230 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi]; 1231 if (sas_port->id >= mvi->chip->n_phy) 1232 port = &mvi->port[sas_port->id - mvi->chip->n_phy]; 1233 else 1234 port = &mvi->port[sas_port->id]; 1235 if (lock) 1236 spin_lock_irqsave(&mvi->lock, flags); 1237 port->port_attached = 1; 1238 phy->port = port; 1239 sas_port->lldd_port = port; 1240 if (phy->phy_type & PORT_TYPE_SAS) { 1241 port->wide_port_phymap = sas_port->phy_mask; 1242 mv_printk("set wide port phy map %x\n", sas_port->phy_mask); 1243 mvs_update_wideport(mvi, sas_phy->id); 1244 } 1245 if (lock) 1246 spin_unlock_irqrestore(&mvi->lock, flags); 1247} 1248 1249static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock) 1250{ 1251 struct domain_device *dev; 1252 struct mvs_phy *phy = sas_phy->lldd_phy; 1253 struct mvs_info *mvi = phy->mvi; 1254 struct asd_sas_port *port = sas_phy->port; 1255 int phy_no = 0; 1256 1257 while (phy != &mvi->phy[phy_no]) { 1258 phy_no++; 1259 if (phy_no >= MVS_MAX_PHYS) 1260 return; 1261 } 1262 list_for_each_entry(dev, &port->dev_list, dev_list_node) 1263 mvs_do_release_task(phy->mvi, phy_no, NULL); 1264 1265} 1266 1267 1268void mvs_port_formed(struct asd_sas_phy *sas_phy) 1269{ 1270 mvs_port_notify_formed(sas_phy, 1); 1271} 1272 1273void mvs_port_deformed(struct asd_sas_phy *sas_phy) 1274{ 1275 mvs_port_notify_deformed(sas_phy, 1); 1276} 1277 1278struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi) 1279{ 1280 u32 dev; 1281 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) { 1282 if (mvi->devices[dev].dev_type == NO_DEVICE) { 1283 mvi->devices[dev].device_id = dev; 1284 return &mvi->devices[dev]; 1285 } 1286 } 1287 1288 if (dev == MVS_MAX_DEVICES) 1289 mv_printk("max support %d devices, ignore ..\n", 1290 MVS_MAX_DEVICES); 1291 1292 return NULL; 1293} 1294 1295void mvs_free_dev(struct mvs_device *mvi_dev) 1296{ 1297 u32 id = mvi_dev->device_id; 1298 memset(mvi_dev, 0, sizeof(*mvi_dev)); 1299 mvi_dev->device_id = id; 1300 mvi_dev->dev_type = NO_DEVICE; 1301 mvi_dev->dev_status = MVS_DEV_NORMAL; 1302 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED; 1303} 1304 1305int mvs_dev_found_notify(struct domain_device *dev, int lock) 1306{ 1307 unsigned long flags = 0; 1308 int res = 0; 1309 struct mvs_info *mvi = NULL; 1310 struct domain_device *parent_dev = dev->parent; 1311 struct mvs_device *mvi_device; 1312 1313 mvi = mvs_find_dev_mvi(dev); 1314 1315 if (lock) 1316 spin_lock_irqsave(&mvi->lock, flags); 1317 1318 mvi_device = mvs_alloc_dev(mvi); 1319 if (!mvi_device) { 1320 res = -1; 1321 goto found_out; 1322 } 1323 dev->lldd_dev = mvi_device; 1324 mvi_device->dev_status = MVS_DEV_NORMAL; 1325 mvi_device->dev_type = dev->dev_type; 1326 mvi_device->mvi_info = mvi; 1327 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { 1328 int phy_id; 1329 u8 phy_num = parent_dev->ex_dev.num_phys; 1330 struct ex_phy *phy; 1331 for (phy_id = 0; phy_id < phy_num; phy_id++) { 1332 phy = &parent_dev->ex_dev.ex_phy[phy_id]; 1333 if (SAS_ADDR(phy->attached_sas_addr) == 1334 SAS_ADDR(dev->sas_addr)) { 1335 mvi_device->attached_phy = phy_id; 1336 break; 1337 } 1338 } 1339 1340 if (phy_id == phy_num) { 1341 mv_printk("Error: no attached dev:%016llx" 1342 "at ex:%016llx.\n", 1343 SAS_ADDR(dev->sas_addr), 1344 SAS_ADDR(parent_dev->sas_addr)); 1345 res = -1; 1346 } 1347 } 1348 1349found_out: 1350 if (lock) 1351 spin_unlock_irqrestore(&mvi->lock, flags); 1352 return res; 1353} 1354 1355int mvs_dev_found(struct domain_device *dev) 1356{ 1357 return mvs_dev_found_notify(dev, 1); 1358} 1359 1360void mvs_dev_gone_notify(struct domain_device *dev) 1361{ 1362 unsigned long flags = 0; 1363 struct mvs_device *mvi_dev = dev->lldd_dev; 1364 struct mvs_info *mvi = mvi_dev->mvi_info; 1365 1366 spin_lock_irqsave(&mvi->lock, flags); 1367 1368 if (mvi_dev) { 1369 mv_dprintk("found dev[%d:%x] is gone.\n", 1370 mvi_dev->device_id, mvi_dev->dev_type); 1371 mvs_release_task(mvi, dev); 1372 mvs_free_reg_set(mvi, mvi_dev); 1373 mvs_free_dev(mvi_dev); 1374 } else { 1375 mv_dprintk("found dev has gone.\n"); 1376 } 1377 dev->lldd_dev = NULL; 1378 1379 spin_unlock_irqrestore(&mvi->lock, flags); 1380} 1381 1382 1383void mvs_dev_gone(struct domain_device *dev) 1384{ 1385 mvs_dev_gone_notify(dev); 1386} 1387 1388static struct sas_task *mvs_alloc_task(void) 1389{ 1390 struct sas_task *task = kzalloc(sizeof(struct sas_task), GFP_KERNEL); 1391 1392 if (task) { 1393 INIT_LIST_HEAD(&task->list); 1394 spin_lock_init(&task->task_state_lock); 1395 task->task_state_flags = SAS_TASK_STATE_PENDING; 1396 init_timer(&task->timer); 1397 init_completion(&task->completion); 1398 } 1399 return task; 1400} 1401 1402static void mvs_free_task(struct sas_task *task) 1403{ 1404 if (task) { 1405 BUG_ON(!list_empty(&task->list)); 1406 kfree(task); 1407 } 1408} 1409 1410static void mvs_task_done(struct sas_task *task) 1411{ 1412 if (!del_timer(&task->timer)) 1413 return; 1414 complete(&task->completion); 1415} 1416 1417static void mvs_tmf_timedout(unsigned long data) 1418{ 1419 struct sas_task *task = (struct sas_task *)data; 1420 1421 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 1422 complete(&task->completion); 1423} 1424 1425/* XXX */ 1426#define MVS_TASK_TIMEOUT 20 1427static int mvs_exec_internal_tmf_task(struct domain_device *dev, 1428 void *parameter, u32 para_len, struct mvs_tmf_task *tmf) 1429{ 1430 int res, retry; 1431 struct sas_task *task = NULL; 1432 1433 for (retry = 0; retry < 3; retry++) { 1434 task = mvs_alloc_task(); 1435 if (!task) 1436 return -ENOMEM; 1437 1438 task->dev = dev; 1439 task->task_proto = dev->tproto; 1440 1441 memcpy(&task->ssp_task, parameter, para_len); 1442 task->task_done = mvs_task_done; 1443 1444 task->timer.data = (unsigned long) task; 1445 task->timer.function = mvs_tmf_timedout; 1446 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ; 1447 add_timer(&task->timer); 1448 1449 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf); 1450 1451 if (res) { 1452 del_timer(&task->timer); 1453 mv_printk("executing internel task failed:%d\n", res); 1454 goto ex_err; 1455 } 1456 1457 wait_for_completion(&task->completion); 1458 res = -TMF_RESP_FUNC_FAILED; 1459 /* Even TMF timed out, return direct. */ 1460 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 1461 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 1462 mv_printk("TMF task[%x] timeout.\n", tmf->tmf); 1463 goto ex_err; 1464 } 1465 } 1466 1467 if (task->task_status.resp == SAS_TASK_COMPLETE && 1468 task->task_status.stat == SAM_STAT_GOOD) { 1469 res = TMF_RESP_FUNC_COMPLETE; 1470 break; 1471 } 1472 1473 if (task->task_status.resp == SAS_TASK_COMPLETE && 1474 task->task_status.stat == SAS_DATA_UNDERRUN) { 1475 /* no error, but return the number of bytes of 1476 * underrun */ 1477 res = task->task_status.residual; 1478 break; 1479 } 1480 1481 if (task->task_status.resp == SAS_TASK_COMPLETE && 1482 task->task_status.stat == SAS_DATA_OVERRUN) { 1483 mv_dprintk("blocked task error.\n"); 1484 res = -EMSGSIZE; 1485 break; 1486 } else { 1487 mv_dprintk(" task to dev %016llx response: 0x%x " 1488 "status 0x%x\n", 1489 SAS_ADDR(dev->sas_addr), 1490 task->task_status.resp, 1491 task->task_status.stat); 1492 mvs_free_task(task); 1493 task = NULL; 1494 1495 } 1496 } 1497ex_err: 1498 BUG_ON(retry == 3 && task != NULL); 1499 if (task != NULL) 1500 mvs_free_task(task); 1501 return res; 1502} 1503 1504static int mvs_debug_issue_ssp_tmf(struct domain_device *dev, 1505 u8 *lun, struct mvs_tmf_task *tmf) 1506{ 1507 struct sas_ssp_task ssp_task; 1508 DECLARE_COMPLETION_ONSTACK(completion); 1509 if (!(dev->tproto & SAS_PROTOCOL_SSP)) 1510 return TMF_RESP_FUNC_ESUPP; 1511 1512 strncpy((u8 *)&ssp_task.LUN, lun, 8); 1513 1514 return mvs_exec_internal_tmf_task(dev, &ssp_task, 1515 sizeof(ssp_task), tmf); 1516} 1517 1518 1519/* Standard mandates link reset for ATA (type 0) 1520 and hard reset for SSP (type 1) , only for RECOVERY */ 1521static int mvs_debug_I_T_nexus_reset(struct domain_device *dev) 1522{ 1523 int rc; 1524 struct sas_phy *phy = sas_find_local_phy(dev); 1525 int reset_type = (dev->dev_type == SATA_DEV || 1526 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; 1527 rc = sas_phy_reset(phy, reset_type); 1528 msleep(2000); 1529 return rc; 1530} 1531 1532/* mandatory SAM-3 */ 1533int mvs_lu_reset(struct domain_device *dev, u8 *lun) 1534{ 1535 unsigned long flags; 1536 int i, phyno[WIDE_PORT_MAX_PHY], num , rc = TMF_RESP_FUNC_FAILED; 1537 struct mvs_tmf_task tmf_task; 1538 struct mvs_device * mvi_dev = dev->lldd_dev; 1539 struct mvs_info *mvi = mvi_dev->mvi_info; 1540 1541 tmf_task.tmf = TMF_LU_RESET; 1542 mvi_dev->dev_status = MVS_DEV_EH; 1543 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1544 if (rc == TMF_RESP_FUNC_COMPLETE) { 1545 num = mvs_find_dev_phyno(dev, phyno); 1546 spin_lock_irqsave(&mvi->lock, flags); 1547 for (i = 0; i < num; i++) 1548 mvs_release_task(mvi, dev); 1549 spin_unlock_irqrestore(&mvi->lock, flags); 1550 } 1551 /* If failed, fall-through I_T_Nexus reset */ 1552 mv_printk("%s for device[%x]:rc= %d\n", __func__, 1553 mvi_dev->device_id, rc); 1554 return rc; 1555} 1556 1557int mvs_I_T_nexus_reset(struct domain_device *dev) 1558{ 1559 unsigned long flags; 1560 int rc = TMF_RESP_FUNC_FAILED; 1561 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev; 1562 struct mvs_info *mvi = mvi_dev->mvi_info; 1563 1564 if (mvi_dev->dev_status != MVS_DEV_EH) 1565 return TMF_RESP_FUNC_COMPLETE; 1566 rc = mvs_debug_I_T_nexus_reset(dev); 1567 mv_printk("%s for device[%x]:rc= %d\n", 1568 __func__, mvi_dev->device_id, rc); 1569 1570 /* housekeeper */ 1571 spin_lock_irqsave(&mvi->lock, flags); 1572 mvs_release_task(mvi, dev); 1573 spin_unlock_irqrestore(&mvi->lock, flags); 1574 1575 return rc; 1576} 1577/* optional SAM-3 */ 1578int mvs_query_task(struct sas_task *task) 1579{ 1580 u32 tag; 1581 struct scsi_lun lun; 1582 struct mvs_tmf_task tmf_task; 1583 int rc = TMF_RESP_FUNC_FAILED; 1584 1585 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1586 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; 1587 struct domain_device *dev = task->dev; 1588 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1589 struct mvs_info *mvi = mvi_dev->mvi_info; 1590 1591 int_to_scsilun(cmnd->device->lun, &lun); 1592 rc = mvs_find_tag(mvi, task, &tag); 1593 if (rc == 0) { 1594 rc = TMF_RESP_FUNC_FAILED; 1595 return rc; 1596 } 1597 1598 tmf_task.tmf = TMF_QUERY_TASK; 1599 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); 1600 1601 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1602 switch (rc) { 1603 /* The task is still in Lun, release it then */ 1604 case TMF_RESP_FUNC_SUCC: 1605 /* The task is not in Lun or failed, reset the phy */ 1606 case TMF_RESP_FUNC_FAILED: 1607 case TMF_RESP_FUNC_COMPLETE: 1608 break; 1609 default: 1610 rc = TMF_RESP_FUNC_COMPLETE; 1611 break; 1612 } 1613 } 1614 mv_printk("%s:rc= %d\n", __func__, rc); 1615 return rc; 1616} 1617 1618/* mandatory SAM-3, still need free task/slot info */ 1619int mvs_abort_task(struct sas_task *task) 1620{ 1621 struct scsi_lun lun; 1622 struct mvs_tmf_task tmf_task; 1623 struct domain_device *dev = task->dev; 1624 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1625 struct mvs_info *mvi; 1626 int rc = TMF_RESP_FUNC_FAILED; 1627 unsigned long flags; 1628 u32 tag; 1629 1630 if (!mvi_dev) { 1631 mv_printk("%s:%d TMF_RESP_FUNC_FAILED\n", __func__, __LINE__); 1632 rc = TMF_RESP_FUNC_FAILED; 1633 } 1634 1635 mvi = mvi_dev->mvi_info; 1636 1637 spin_lock_irqsave(&task->task_state_lock, flags); 1638 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1639 spin_unlock_irqrestore(&task->task_state_lock, flags); 1640 rc = TMF_RESP_FUNC_COMPLETE; 1641 goto out; 1642 } 1643 spin_unlock_irqrestore(&task->task_state_lock, flags); 1644 mvi_dev->dev_status = MVS_DEV_EH; 1645 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1646 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; 1647 1648 int_to_scsilun(cmnd->device->lun, &lun); 1649 rc = mvs_find_tag(mvi, task, &tag); 1650 if (rc == 0) { 1651 mv_printk("No such tag in %s\n", __func__); 1652 rc = TMF_RESP_FUNC_FAILED; 1653 return rc; 1654 } 1655 1656 tmf_task.tmf = TMF_ABORT_TASK; 1657 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); 1658 1659 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1660 1661 /* if successful, clear the task and callback forwards.*/ 1662 if (rc == TMF_RESP_FUNC_COMPLETE) { 1663 u32 slot_no; 1664 struct mvs_slot_info *slot; 1665 1666 if (task->lldd_task) { 1667 slot = task->lldd_task; 1668 slot_no = (u32) (slot - mvi->slot_info); 1669 spin_lock_irqsave(&mvi->lock, flags); 1670 mvs_slot_complete(mvi, slot_no, 1); 1671 spin_unlock_irqrestore(&mvi->lock, flags); 1672 } 1673 } 1674 1675 } else if (task->task_proto & SAS_PROTOCOL_SATA || 1676 task->task_proto & SAS_PROTOCOL_STP) { 1677 /* to do free register_set */ 1678 if (SATA_DEV == dev->dev_type) { 1679 struct mvs_slot_info *slot = task->lldd_task; 1680 struct task_status_struct *tstat; 1681 u32 slot_idx = (u32)(slot - mvi->slot_info); 1682 tstat = &task->task_status; 1683 mv_dprintk(KERN_DEBUG "mv_abort_task() mvi=%p task=%p " 1684 "slot=%p slot_idx=x%x\n", 1685 mvi, task, slot, slot_idx); 1686 tstat->stat = SAS_ABORTED_TASK; 1687 if (mvi_dev && mvi_dev->running_req) 1688 mvi_dev->running_req--; 1689 if (sas_protocol_ata(task->task_proto)) 1690 mvs_free_reg_set(mvi, mvi_dev); 1691 mvs_slot_task_free(mvi, task, slot, slot_idx); 1692 return -1; 1693 } 1694 } else { 1695 /* SMP */ 1696 1697 } 1698out: 1699 if (rc != TMF_RESP_FUNC_COMPLETE) 1700 mv_printk("%s:rc= %d\n", __func__, rc); 1701 return rc; 1702} 1703 1704int mvs_abort_task_set(struct domain_device *dev, u8 *lun) 1705{ 1706 int rc = TMF_RESP_FUNC_FAILED; 1707 struct mvs_tmf_task tmf_task; 1708 1709 tmf_task.tmf = TMF_ABORT_TASK_SET; 1710 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1711 1712 return rc; 1713} 1714 1715int mvs_clear_aca(struct domain_device *dev, u8 *lun) 1716{ 1717 int rc = TMF_RESP_FUNC_FAILED; 1718 struct mvs_tmf_task tmf_task; 1719 1720 tmf_task.tmf = TMF_CLEAR_ACA; 1721 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1722 1723 return rc; 1724} 1725 1726int mvs_clear_task_set(struct domain_device *dev, u8 *lun) 1727{ 1728 int rc = TMF_RESP_FUNC_FAILED; 1729 struct mvs_tmf_task tmf_task; 1730 1731 tmf_task.tmf = TMF_CLEAR_TASK_SET; 1732 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1733 1734 return rc; 1735} 1736 1737static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task, 1738 u32 slot_idx, int err) 1739{ 1740 struct mvs_device *mvi_dev = task->dev->lldd_dev; 1741 struct task_status_struct *tstat = &task->task_status; 1742 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf; 1743 int stat = SAM_STAT_GOOD; 1744 1745 1746 resp->frame_len = sizeof(struct dev_to_host_fis); 1747 memcpy(&resp->ending_fis[0], 1748 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset), 1749 sizeof(struct dev_to_host_fis)); 1750 tstat->buf_valid_size = sizeof(*resp); 1751 if (unlikely(err)) { 1752 if (unlikely(err & CMD_ISS_STPD)) 1753 stat = SAS_OPEN_REJECT; 1754 else 1755 stat = SAS_PROTO_RESPONSE; 1756 } 1757 1758 return stat; 1759} 1760 1761static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task, 1762 u32 slot_idx) 1763{ 1764 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; 1765 int stat; 1766 u32 err_dw0 = le32_to_cpu(*(u32 *) (slot->response)); 1767 u32 tfs = 0; 1768 enum mvs_port_type type = PORT_TYPE_SAS; 1769 1770 if (err_dw0 & CMD_ISS_STPD) 1771 MVS_CHIP_DISP->issue_stop(mvi, type, tfs); 1772 1773 MVS_CHIP_DISP->command_active(mvi, slot_idx); 1774 1775 stat = SAM_STAT_CHECK_CONDITION; 1776 switch (task->task_proto) { 1777 case SAS_PROTOCOL_SSP: 1778 stat = SAS_ABORTED_TASK; 1779 break; 1780 case SAS_PROTOCOL_SMP: 1781 stat = SAM_STAT_CHECK_CONDITION; 1782 break; 1783 1784 case SAS_PROTOCOL_SATA: 1785 case SAS_PROTOCOL_STP: 1786 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: 1787 { 1788 if (err_dw0 == 0x80400002) 1789 mv_printk("find reserved error, why?\n"); 1790 1791 task->ata_task.use_ncq = 0; 1792 mvs_sata_done(mvi, task, slot_idx, err_dw0); 1793 } 1794 break; 1795 default: 1796 break; 1797 } 1798 1799 return stat; 1800} 1801 1802int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) 1803{ 1804 u32 slot_idx = rx_desc & RXQ_SLOT_MASK; 1805 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; 1806 struct sas_task *task = slot->task; 1807 struct mvs_device *mvi_dev = NULL; 1808 struct task_status_struct *tstat; 1809 struct domain_device *dev; 1810 u32 aborted; 1811 1812 void *to; 1813 enum exec_status sts; 1814 1815 if (unlikely(!task || !task->lldd_task || !task->dev)) 1816 return -1; 1817 1818 tstat = &task->task_status; 1819 dev = task->dev; 1820 mvi_dev = dev->lldd_dev; 1821 1822 spin_lock(&task->task_state_lock); 1823 task->task_state_flags &= 1824 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR); 1825 task->task_state_flags |= SAS_TASK_STATE_DONE; 1826 /* race condition*/ 1827 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED; 1828 spin_unlock(&task->task_state_lock); 1829 1830 memset(tstat, 0, sizeof(*tstat)); 1831 tstat->resp = SAS_TASK_COMPLETE; 1832 1833 if (unlikely(aborted)) { 1834 tstat->stat = SAS_ABORTED_TASK; 1835 if (mvi_dev && mvi_dev->running_req) 1836 mvi_dev->running_req--; 1837 if (sas_protocol_ata(task->task_proto)) 1838 mvs_free_reg_set(mvi, mvi_dev); 1839 1840 mvs_slot_task_free(mvi, task, slot, slot_idx); 1841 return -1; 1842 } 1843 1844 if (unlikely(!mvi_dev || flags)) { 1845 if (!mvi_dev) 1846 mv_dprintk("port has not device.\n"); 1847 tstat->stat = SAS_PHY_DOWN; 1848 goto out; 1849 } 1850 1851 /* error info record present */ 1852 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) { 1853 tstat->stat = mvs_slot_err(mvi, task, slot_idx); 1854 tstat->resp = SAS_TASK_COMPLETE; 1855 goto out; 1856 } 1857 1858 switch (task->task_proto) { 1859 case SAS_PROTOCOL_SSP: 1860 /* hw says status == 0, datapres == 0 */ 1861 if (rx_desc & RXQ_GOOD) { 1862 tstat->stat = SAM_STAT_GOOD; 1863 tstat->resp = SAS_TASK_COMPLETE; 1864 } 1865 /* response frame present */ 1866 else if (rx_desc & RXQ_RSP) { 1867 struct ssp_response_iu *iu = slot->response + 1868 sizeof(struct mvs_err_info); 1869 sas_ssp_task_response(mvi->dev, task, iu); 1870 } else 1871 tstat->stat = SAM_STAT_CHECK_CONDITION; 1872 break; 1873 1874 case SAS_PROTOCOL_SMP: { 1875 struct scatterlist *sg_resp = &task->smp_task.smp_resp; 1876 tstat->stat = SAM_STAT_GOOD; 1877 to = kmap_atomic(sg_page(sg_resp), KM_IRQ0); 1878 memcpy(to + sg_resp->offset, 1879 slot->response + sizeof(struct mvs_err_info), 1880 sg_dma_len(sg_resp)); 1881 kunmap_atomic(to, KM_IRQ0); 1882 break; 1883 } 1884 1885 case SAS_PROTOCOL_SATA: 1886 case SAS_PROTOCOL_STP: 1887 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: { 1888 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0); 1889 break; 1890 } 1891 1892 default: 1893 tstat->stat = SAM_STAT_CHECK_CONDITION; 1894 break; 1895 } 1896 if (!slot->port->port_attached) { 1897 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id); 1898 tstat->stat = SAS_PHY_DOWN; 1899 } 1900 1901 1902out: 1903 if (mvi_dev && mvi_dev->running_req) { 1904 mvi_dev->running_req--; 1905 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req) 1906 mvs_free_reg_set(mvi, mvi_dev); 1907 } 1908 mvs_slot_task_free(mvi, task, slot, slot_idx); 1909 sts = tstat->stat; 1910 1911 spin_unlock(&mvi->lock); 1912 if (task->task_done) 1913 task->task_done(task); 1914 else 1915 mv_dprintk("why has not task_done.\n"); 1916 spin_lock(&mvi->lock); 1917 1918 return sts; 1919} 1920 1921void mvs_do_release_task(struct mvs_info *mvi, 1922 int phy_no, struct domain_device *dev) 1923{ 1924 u32 slot_idx; 1925 struct mvs_phy *phy; 1926 struct mvs_port *port; 1927 struct mvs_slot_info *slot, *slot2; 1928 1929 phy = &mvi->phy[phy_no]; 1930 port = phy->port; 1931 if (!port) 1932 return; 1933 /* clean cmpl queue in case request is already finished */ 1934 mvs_int_rx(mvi, false); 1935 1936 1937 1938 list_for_each_entry_safe(slot, slot2, &port->list, entry) { 1939 struct sas_task *task; 1940 slot_idx = (u32) (slot - mvi->slot_info); 1941 task = slot->task; 1942 1943 if (dev && task->dev != dev) 1944 continue; 1945 1946 mv_printk("Release slot [%x] tag[%x], task [%p]:\n", 1947 slot_idx, slot->slot_tag, task); 1948 MVS_CHIP_DISP->command_active(mvi, slot_idx); 1949 1950 mvs_slot_complete(mvi, slot_idx, 1); 1951 } 1952} 1953 1954void mvs_release_task(struct mvs_info *mvi, 1955 struct domain_device *dev) 1956{ 1957 int i, phyno[WIDE_PORT_MAX_PHY], num; 1958 /* housekeeper */ 1959 num = mvs_find_dev_phyno(dev, phyno); 1960 for (i = 0; i < num; i++) 1961 mvs_do_release_task(mvi, phyno[i], dev); 1962} 1963 1964static void mvs_phy_disconnected(struct mvs_phy *phy) 1965{ 1966 phy->phy_attached = 0; 1967 phy->att_dev_info = 0; 1968 phy->att_dev_sas_addr = 0; 1969} 1970 1971static void mvs_work_queue(struct work_struct *work) 1972{ 1973 struct delayed_work *dw = container_of(work, struct delayed_work, work); 1974 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q); 1975 struct mvs_info *mvi = mwq->mvi; 1976 unsigned long flags; 1977 1978 spin_lock_irqsave(&mvi->lock, flags); 1979 if (mwq->handler & PHY_PLUG_EVENT) { 1980 u32 phy_no = (unsigned long) mwq->data; 1981 struct sas_ha_struct *sas_ha = mvi->sas; 1982 struct mvs_phy *phy = &mvi->phy[phy_no]; 1983 struct asd_sas_phy *sas_phy = &phy->sas_phy; 1984 1985 if (phy->phy_event & PHY_PLUG_OUT) { 1986 u32 tmp; 1987 struct sas_identify_frame *id; 1988 id = (struct sas_identify_frame *)phy->frame_rcvd; 1989 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no); 1990 phy->phy_event &= ~PHY_PLUG_OUT; 1991 if (!(tmp & PHY_READY_MASK)) { 1992 sas_phy_disconnected(sas_phy); 1993 mvs_phy_disconnected(phy); 1994 sas_ha->notify_phy_event(sas_phy, 1995 PHYE_LOSS_OF_SIGNAL); 1996 mv_dprintk("phy%d Removed Device\n", phy_no); 1997 } else { 1998 MVS_CHIP_DISP->detect_porttype(mvi, phy_no); 1999 mvs_update_phyinfo(mvi, phy_no, 1); 2000 mvs_bytes_dmaed(mvi, phy_no); 2001 mvs_port_notify_formed(sas_phy, 0); 2002 mv_dprintk("phy%d Attached Device\n", phy_no); 2003 } 2004 } 2005 } 2006 list_del(&mwq->entry); 2007 spin_unlock_irqrestore(&mvi->lock, flags); 2008 kfree(mwq); 2009} 2010 2011static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler) 2012{ 2013 struct mvs_wq *mwq; 2014 int ret = 0; 2015 2016 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC); 2017 if (mwq) { 2018 mwq->mvi = mvi; 2019 mwq->data = data; 2020 mwq->handler = handler; 2021 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq); 2022 list_add_tail(&mwq->entry, &mvi->wq_list); 2023 schedule_delayed_work(&mwq->work_q, HZ * 2); 2024 } else 2025 ret = -ENOMEM; 2026 2027 return ret; 2028} 2029 2030static void mvs_sig_time_out(unsigned long tphy) 2031{ 2032 struct mvs_phy *phy = (struct mvs_phy *)tphy; 2033 struct mvs_info *mvi = phy->mvi; 2034 u8 phy_no; 2035 2036 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) { 2037 if (&mvi->phy[phy_no] == phy) { 2038 mv_dprintk("Get signature time out, reset phy %d\n", 2039 phy_no+mvi->id*mvi->chip->n_phy); 2040 MVS_CHIP_DISP->phy_reset(mvi, phy_no, 1); 2041 } 2042 } 2043} 2044 2045void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events) 2046{ 2047 u32 tmp; 2048 struct sas_ha_struct *sas_ha = mvi->sas; 2049 struct mvs_phy *phy = &mvi->phy[phy_no]; 2050 struct asd_sas_phy *sas_phy = &phy->sas_phy; 2051 2052 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no); 2053 mv_dprintk("port %d ctrl sts=0x%X.\n", phy_no+mvi->id*mvi->chip->n_phy, 2054 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no)); 2055 mv_dprintk("Port %d irq sts = 0x%X\n", phy_no+mvi->id*mvi->chip->n_phy, 2056 phy->irq_status); 2057 2058 /* 2059 * events is port event now , 2060 * we need check the interrupt status which belongs to per port. 2061 */ 2062 2063 if (phy->irq_status & PHYEV_DCDR_ERR) { 2064 mv_dprintk("port %d STP decoding error.\n", 2065 phy_no + mvi->id*mvi->chip->n_phy); 2066 } 2067 2068 if (phy->irq_status & PHYEV_POOF) { 2069 if (!(phy->phy_event & PHY_PLUG_OUT)) { 2070 int dev_sata = phy->phy_type & PORT_TYPE_SATA; 2071 int ready; 2072 mvs_do_release_task(mvi, phy_no, NULL); 2073 phy->phy_event |= PHY_PLUG_OUT; 2074 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1); 2075 mvs_handle_event(mvi, 2076 (void *)(unsigned long)phy_no, 2077 PHY_PLUG_EVENT); 2078 ready = mvs_is_phy_ready(mvi, phy_no); 2079 if (!ready) 2080 mv_dprintk("phy%d Unplug Notice\n", 2081 phy_no + 2082 mvi->id * mvi->chip->n_phy); 2083 if (ready || dev_sata) { 2084 if (MVS_CHIP_DISP->stp_reset) 2085 MVS_CHIP_DISP->stp_reset(mvi, 2086 phy_no); 2087 else 2088 MVS_CHIP_DISP->phy_reset(mvi, 2089 phy_no, 0); 2090 return; 2091 } 2092 } 2093 } 2094 2095 if (phy->irq_status & PHYEV_COMWAKE) { 2096 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no); 2097 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no, 2098 tmp | PHYEV_SIG_FIS); 2099 if (phy->timer.function == NULL) { 2100 phy->timer.data = (unsigned long)phy; 2101 phy->timer.function = mvs_sig_time_out; 2102 phy->timer.expires = jiffies + 10*HZ; 2103 add_timer(&phy->timer); 2104 } 2105 } 2106 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) { 2107 phy->phy_status = mvs_is_phy_ready(mvi, phy_no); 2108 mv_dprintk("notify plug in on phy[%d]\n", phy_no); 2109 if (phy->phy_status) { 2110 mdelay(10); 2111 MVS_CHIP_DISP->detect_porttype(mvi, phy_no); 2112 if (phy->phy_type & PORT_TYPE_SATA) { 2113 tmp = MVS_CHIP_DISP->read_port_irq_mask( 2114 mvi, phy_no); 2115 tmp &= ~PHYEV_SIG_FIS; 2116 MVS_CHIP_DISP->write_port_irq_mask(mvi, 2117 phy_no, tmp); 2118 } 2119 mvs_update_phyinfo(mvi, phy_no, 0); 2120 if (phy->phy_type & PORT_TYPE_SAS) { 2121 MVS_CHIP_DISP->phy_reset(mvi, phy_no, 2); 2122 mdelay(10); 2123 } 2124 2125 mvs_bytes_dmaed(mvi, phy_no); 2126 /* whether driver is going to handle hot plug */ 2127 if (phy->phy_event & PHY_PLUG_OUT) { 2128 mvs_port_notify_formed(sas_phy, 0); 2129 phy->phy_event &= ~PHY_PLUG_OUT; 2130 } 2131 } else { 2132 mv_dprintk("plugin interrupt but phy%d is gone\n", 2133 phy_no + mvi->id*mvi->chip->n_phy); 2134 } 2135 } else if (phy->irq_status & PHYEV_BROAD_CH) { 2136 mv_dprintk("port %d broadcast change.\n", 2137 phy_no + mvi->id*mvi->chip->n_phy); 2138 /* exception for Samsung disk drive*/ 2139 mdelay(1000); 2140 sas_ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD); 2141 } 2142 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status); 2143} 2144 2145int mvs_int_rx(struct mvs_info *mvi, bool self_clear) 2146{ 2147 u32 rx_prod_idx, rx_desc; 2148 bool attn = false; 2149 2150 /* the first dword in the RX ring is special: it contains 2151 * a mirror of the hardware's RX producer index, so that 2152 * we don't have to stall the CPU reading that register. 2153 * The actual RX ring is offset by one dword, due to this. 2154 */ 2155 rx_prod_idx = mvi->rx_cons; 2156 mvi->rx_cons = le32_to_cpu(mvi->rx[0]); 2157 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */ 2158 return 0; 2159 2160 /* The CMPL_Q may come late, read from register and try again 2161 * note: if coalescing is enabled, 2162 * it will need to read from register every time for sure 2163 */ 2164 if (unlikely(mvi->rx_cons == rx_prod_idx)) 2165 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK; 2166 2167 if (mvi->rx_cons == rx_prod_idx) 2168 return 0; 2169 2170 while (mvi->rx_cons != rx_prod_idx) { 2171 /* increment our internal RX consumer pointer */ 2172 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1); 2173 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]); 2174 2175 if (likely(rx_desc & RXQ_DONE)) 2176 mvs_slot_complete(mvi, rx_desc, 0); 2177 if (rx_desc & RXQ_ATTN) { 2178 attn = true; 2179 } else if (rx_desc & RXQ_ERR) { 2180 if (!(rx_desc & RXQ_DONE)) 2181 mvs_slot_complete(mvi, rx_desc, 0); 2182 } else if (rx_desc & RXQ_SLOT_RESET) { 2183 mvs_slot_free(mvi, rx_desc); 2184 } 2185 } 2186 2187 if (attn && self_clear) 2188 MVS_CHIP_DISP->int_full(mvi); 2189 return 0; 2190} 2191 2192