1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Marvell 88SE64xx/88SE94xx main function 4 * 5 * Copyright 2007 Red Hat, Inc. 6 * Copyright 2008 Marvell. <kewei@marvell.com> 7 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com> 8 */ 9 10 #include "mv_sas.h" 11 12 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag) 13 { 14 if (task->lldd_task) { 15 struct mvs_slot_info *slot; 16 slot = task->lldd_task; 17 *tag = slot->slot_tag; 18 return 1; 19 } 20 return 0; 21 } 22 23 void mvs_tag_clear(struct mvs_info *mvi, u32 tag) 24 { 25 void *bitmap = mvi->tags; 26 clear_bit(tag, bitmap); 27 } 28 29 void mvs_tag_free(struct mvs_info *mvi, u32 tag) 30 { 31 mvs_tag_clear(mvi, tag); 32 } 33 34 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag) 35 { 36 void *bitmap = mvi->tags; 37 set_bit(tag, bitmap); 38 } 39 40 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) 41 { 42 unsigned int index, tag; 43 void *bitmap = mvi->tags; 44 45 index = find_first_zero_bit(bitmap, mvi->tags_num); 46 tag = index; 47 if (tag >= mvi->tags_num) 48 return -SAS_QUEUE_FULL; 49 mvs_tag_set(mvi, tag); 50 *tag_out = tag; 51 return 0; 52 } 53 54 void mvs_tag_init(struct mvs_info *mvi) 55 { 56 int i; 57 for (i = 0; i < mvi->tags_num; ++i) 58 mvs_tag_clear(mvi, i); 59 } 60 61 static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev) 62 { 63 unsigned long i = 0, j = 0, hi = 0; 64 struct sas_ha_struct *sha = dev->port->ha; 65 struct mvs_info *mvi = NULL; 66 struct asd_sas_phy *phy; 67 68 while (sha->sas_port[i]) { 69 if (sha->sas_port[i] == dev->port) { 70 spin_lock(&sha->sas_port[i]->phy_list_lock); 71 phy = container_of(sha->sas_port[i]->phy_list.next, 72 struct asd_sas_phy, port_phy_el); 73 spin_unlock(&sha->sas_port[i]->phy_list_lock); 74 j = 0; 75 while (sha->sas_phy[j]) { 76 if (sha->sas_phy[j] == phy) 77 break; 78 j++; 79 } 80 break; 81 } 82 i++; 83 } 84 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; 85 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; 86 87 return mvi; 88 89 } 90 91 static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno) 92 { 93 unsigned long i = 0, j = 0, n = 0, num = 0; 94 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 95 struct mvs_info *mvi = mvi_dev->mvi_info; 96 struct sas_ha_struct *sha = dev->port->ha; 97 98 while (sha->sas_port[i]) { 99 if (sha->sas_port[i] == dev->port) { 100 struct asd_sas_phy *phy; 101 102 spin_lock(&sha->sas_port[i]->phy_list_lock); 103 list_for_each_entry(phy, 104 &sha->sas_port[i]->phy_list, port_phy_el) { 105 j = 0; 106 while (sha->sas_phy[j]) { 107 if (sha->sas_phy[j] == phy) 108 break; 109 j++; 110 } 111 phyno[n] = (j >= mvi->chip->n_phy) ? 112 (j - mvi->chip->n_phy) : j; 113 num++; 114 n++; 115 } 116 spin_unlock(&sha->sas_port[i]->phy_list_lock); 117 break; 118 } 119 i++; 120 } 121 return num; 122 } 123 124 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi, 125 u8 reg_set) 126 { 127 u32 dev_no; 128 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) { 129 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED) 130 continue; 131 132 if (mvi->devices[dev_no].taskfileset == reg_set) 133 return &mvi->devices[dev_no]; 134 } 135 return NULL; 136 } 137 138 static inline void mvs_free_reg_set(struct mvs_info *mvi, 139 struct mvs_device *dev) 140 { 141 if (!dev) { 142 mv_printk("device has been free.\n"); 143 return; 144 } 145 if (dev->taskfileset == MVS_ID_NOT_MAPPED) 146 return; 147 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset); 148 } 149 150 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi, 151 struct mvs_device *dev) 152 { 153 if (dev->taskfileset != MVS_ID_NOT_MAPPED) 154 return 0; 155 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset); 156 } 157 158 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard) 159 { 160 u32 no; 161 for_each_phy(phy_mask, phy_mask, no) { 162 if (!(phy_mask & 1)) 163 continue; 164 MVS_CHIP_DISP->phy_reset(mvi, no, hard); 165 } 166 } 167 168 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, 169 void *funcdata) 170 { 171 int rc = 0, phy_id = sas_phy->id; 172 u32 tmp, i = 0, hi; 173 struct sas_ha_struct *sha = sas_phy->ha; 174 struct mvs_info *mvi = NULL; 175 176 while (sha->sas_phy[i]) { 177 if (sha->sas_phy[i] == sas_phy) 178 break; 179 i++; 180 } 181 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; 182 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; 183 184 switch (func) { 185 case PHY_FUNC_SET_LINK_RATE: 186 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata); 187 break; 188 189 case PHY_FUNC_HARD_RESET: 190 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id); 191 if (tmp & PHY_RST_HARD) 192 break; 193 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET); 194 break; 195 196 case PHY_FUNC_LINK_RESET: 197 MVS_CHIP_DISP->phy_enable(mvi, phy_id); 198 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET); 199 break; 200 201 case PHY_FUNC_DISABLE: 202 MVS_CHIP_DISP->phy_disable(mvi, phy_id); 203 break; 204 case PHY_FUNC_RELEASE_SPINUP_HOLD: 205 default: 206 rc = -ENOSYS; 207 } 208 msleep(200); 209 return rc; 210 } 211 212 void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo, 213 u32 off_hi, u64 sas_addr) 214 { 215 u32 lo = (u32)sas_addr; 216 u32 hi = (u32)(sas_addr>>32); 217 218 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo); 219 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo); 220 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi); 221 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi); 222 } 223 224 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i, gfp_t gfp_flags) 225 { 226 struct mvs_phy *phy = &mvi->phy[i]; 227 struct asd_sas_phy *sas_phy = &phy->sas_phy; 228 229 if (!phy->phy_attached) 230 return; 231 232 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK) 233 && phy->phy_type & PORT_TYPE_SAS) { 234 return; 235 } 236 237 sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags); 238 239 if (sas_phy->phy) { 240 struct sas_phy *sphy = sas_phy->phy; 241 242 sphy->negotiated_linkrate = sas_phy->linkrate; 243 sphy->minimum_linkrate = phy->minimum_linkrate; 244 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; 245 sphy->maximum_linkrate = phy->maximum_linkrate; 246 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate(); 247 } 248 249 if (phy->phy_type & PORT_TYPE_SAS) { 250 struct sas_identify_frame *id; 251 252 id = (struct sas_identify_frame *)phy->frame_rcvd; 253 id->dev_type = phy->identify.device_type; 254 id->initiator_bits = SAS_PROTOCOL_ALL; 255 id->target_bits = phy->identify.target_port_protocols; 256 257 /* direct attached SAS device */ 258 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) { 259 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT); 260 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00); 261 } 262 } else if (phy->phy_type & PORT_TYPE_SATA) { 263 /*Nothing*/ 264 } 265 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy); 266 267 sas_phy->frame_rcvd_size = phy->frame_rcvd_size; 268 269 sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags); 270 } 271 272 void mvs_scan_start(struct Scsi_Host *shost) 273 { 274 int i, j; 275 unsigned short core_nr; 276 struct mvs_info *mvi; 277 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); 278 struct mvs_prv_info *mvs_prv = sha->lldd_ha; 279 280 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host; 281 282 for (j = 0; j < core_nr; j++) { 283 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j]; 284 for (i = 0; i < mvi->chip->n_phy; ++i) 285 mvs_bytes_dmaed(mvi, i, GFP_KERNEL); 286 } 287 mvs_prv->scan_finished = 1; 288 } 289 290 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time) 291 { 292 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); 293 struct mvs_prv_info *mvs_prv = sha->lldd_ha; 294 295 if (mvs_prv->scan_finished == 0) 296 return 0; 297 298 sas_drain_work(sha); 299 return 1; 300 } 301 302 static int mvs_task_prep_smp(struct mvs_info *mvi, 303 struct mvs_task_exec_info *tei) 304 { 305 int elem, rc, i; 306 struct sas_ha_struct *sha = mvi->sas; 307 struct sas_task *task = tei->task; 308 struct mvs_cmd_hdr *hdr = tei->hdr; 309 struct domain_device *dev = task->dev; 310 struct asd_sas_port *sas_port = dev->port; 311 struct sas_phy *sphy = dev->phy; 312 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number]; 313 struct scatterlist *sg_req, *sg_resp; 314 u32 req_len, resp_len, tag = tei->tag; 315 void *buf_tmp; 316 u8 *buf_oaf; 317 dma_addr_t buf_tmp_dma; 318 void *buf_prd; 319 struct mvs_slot_info *slot = &mvi->slot_info[tag]; 320 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); 321 322 /* 323 * DMA-map SMP request, response buffers 324 */ 325 sg_req = &task->smp_task.smp_req; 326 elem = dma_map_sg(mvi->dev, sg_req, 1, DMA_TO_DEVICE); 327 if (!elem) 328 return -ENOMEM; 329 req_len = sg_dma_len(sg_req); 330 331 sg_resp = &task->smp_task.smp_resp; 332 elem = dma_map_sg(mvi->dev, sg_resp, 1, DMA_FROM_DEVICE); 333 if (!elem) { 334 rc = -ENOMEM; 335 goto err_out; 336 } 337 resp_len = SB_RFB_MAX; 338 339 /* must be in dwords */ 340 if ((req_len & 0x3) || (resp_len & 0x3)) { 341 rc = -EINVAL; 342 goto err_out_2; 343 } 344 345 /* 346 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 347 */ 348 349 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */ 350 buf_tmp = slot->buf; 351 buf_tmp_dma = slot->buf_dma; 352 353 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req)); 354 355 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 356 buf_oaf = buf_tmp; 357 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 358 359 buf_tmp += MVS_OAF_SZ; 360 buf_tmp_dma += MVS_OAF_SZ; 361 362 /* region 3: PRD table *********************************** */ 363 buf_prd = buf_tmp; 364 if (tei->n_elem) 365 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 366 else 367 hdr->prd_tbl = 0; 368 369 i = MVS_CHIP_DISP->prd_size() * tei->n_elem; 370 buf_tmp += i; 371 buf_tmp_dma += i; 372 373 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 374 slot->response = buf_tmp; 375 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 376 if (mvi->flags & MVF_FLAG_SOC) 377 hdr->reserved[0] = 0; 378 379 /* 380 * Fill in TX ring and command slot header 381 */ 382 slot->tx = mvi->tx_prod; 383 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) | 384 TXQ_MODE_I | tag | 385 (MVS_PHY_ID << TXQ_PHY_SHIFT)); 386 387 hdr->flags |= flags; 388 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4)); 389 hdr->tags = cpu_to_le32(tag); 390 hdr->data_len = 0; 391 392 /* generate open address frame hdr (first 12 bytes) */ 393 /* initiator, SMP, ftype 1h */ 394 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01; 395 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; 396 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */ 397 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 398 399 /* fill in PRD (scatter/gather) table, if any */ 400 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 401 402 return 0; 403 404 err_out_2: 405 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1, 406 DMA_FROM_DEVICE); 407 err_out: 408 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1, 409 DMA_TO_DEVICE); 410 return rc; 411 } 412 413 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag) 414 { 415 struct ata_queued_cmd *qc = task->uldd_task; 416 417 if (qc) { 418 if (qc->tf.command == ATA_CMD_FPDMA_WRITE || 419 qc->tf.command == ATA_CMD_FPDMA_READ || 420 qc->tf.command == ATA_CMD_FPDMA_RECV || 421 qc->tf.command == ATA_CMD_FPDMA_SEND || 422 qc->tf.command == ATA_CMD_NCQ_NON_DATA) { 423 *tag = qc->tag; 424 return 1; 425 } 426 } 427 428 return 0; 429 } 430 431 static int mvs_task_prep_ata(struct mvs_info *mvi, 432 struct mvs_task_exec_info *tei) 433 { 434 struct sas_task *task = tei->task; 435 struct domain_device *dev = task->dev; 436 struct mvs_device *mvi_dev = dev->lldd_dev; 437 struct mvs_cmd_hdr *hdr = tei->hdr; 438 struct asd_sas_port *sas_port = dev->port; 439 struct mvs_slot_info *slot; 440 void *buf_prd; 441 u32 tag = tei->tag, hdr_tag; 442 u32 flags, del_q; 443 void *buf_tmp; 444 u8 *buf_cmd, *buf_oaf; 445 dma_addr_t buf_tmp_dma; 446 u32 i, req_len, resp_len; 447 const u32 max_resp_len = SB_RFB_MAX; 448 449 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) { 450 mv_dprintk("Have not enough regiset for dev %d.\n", 451 mvi_dev->device_id); 452 return -EBUSY; 453 } 454 slot = &mvi->slot_info[tag]; 455 slot->tx = mvi->tx_prod; 456 del_q = TXQ_MODE_I | tag | 457 (TXQ_CMD_STP << TXQ_CMD_SHIFT) | 458 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) | 459 (mvi_dev->taskfileset << TXQ_SRS_SHIFT); 460 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q); 461 462 if (task->data_dir == DMA_FROM_DEVICE) 463 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT); 464 else 465 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); 466 467 if (task->ata_task.use_ncq) 468 flags |= MCH_FPDMA; 469 if (dev->sata_dev.class == ATA_DEV_ATAPI) { 470 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI) 471 flags |= MCH_ATAPI; 472 } 473 474 hdr->flags = cpu_to_le32(flags); 475 476 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag)) 477 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3); 478 else 479 hdr_tag = tag; 480 481 hdr->tags = cpu_to_le32(hdr_tag); 482 483 hdr->data_len = cpu_to_le32(task->total_xfer_len); 484 485 /* 486 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 487 */ 488 489 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */ 490 buf_cmd = buf_tmp = slot->buf; 491 buf_tmp_dma = slot->buf_dma; 492 493 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); 494 495 buf_tmp += MVS_ATA_CMD_SZ; 496 buf_tmp_dma += MVS_ATA_CMD_SZ; 497 498 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 499 /* used for STP. unused for SATA? */ 500 buf_oaf = buf_tmp; 501 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 502 503 buf_tmp += MVS_OAF_SZ; 504 buf_tmp_dma += MVS_OAF_SZ; 505 506 /* region 3: PRD table ********************************************* */ 507 buf_prd = buf_tmp; 508 509 if (tei->n_elem) 510 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 511 else 512 hdr->prd_tbl = 0; 513 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count(); 514 515 buf_tmp += i; 516 buf_tmp_dma += i; 517 518 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 519 slot->response = buf_tmp; 520 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 521 if (mvi->flags & MVF_FLAG_SOC) 522 hdr->reserved[0] = 0; 523 524 req_len = sizeof(struct host_to_dev_fis); 525 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ - 526 sizeof(struct mvs_err_info) - i; 527 528 /* request, response lengths */ 529 resp_len = min(resp_len, max_resp_len); 530 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); 531 532 if (likely(!task->ata_task.device_control_reg_update)) 533 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */ 534 /* fill in command FIS and ATAPI CDB */ 535 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); 536 if (dev->sata_dev.class == ATA_DEV_ATAPI) 537 memcpy(buf_cmd + STP_ATAPI_CMD, 538 task->ata_task.atapi_packet, 16); 539 540 /* generate open address frame hdr (first 12 bytes) */ 541 /* initiator, STP, ftype 1h */ 542 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1; 543 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; 544 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); 545 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 546 547 /* fill in PRD (scatter/gather) table, if any */ 548 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); 549 550 if (task->data_dir == DMA_FROM_DEVICE) 551 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask, 552 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd); 553 554 return 0; 555 } 556 557 static int mvs_task_prep_ssp(struct mvs_info *mvi, 558 struct mvs_task_exec_info *tei, int is_tmf, 559 struct sas_tmf_task *tmf) 560 { 561 struct sas_task *task = tei->task; 562 struct mvs_cmd_hdr *hdr = tei->hdr; 563 struct mvs_port *port = tei->port; 564 struct domain_device *dev = task->dev; 565 struct mvs_device *mvi_dev = dev->lldd_dev; 566 struct asd_sas_port *sas_port = dev->port; 567 struct mvs_slot_info *slot; 568 void *buf_prd; 569 struct ssp_frame_hdr *ssp_hdr; 570 void *buf_tmp; 571 u8 *buf_cmd, *buf_oaf, fburst = 0; 572 dma_addr_t buf_tmp_dma; 573 u32 flags; 574 u32 resp_len, req_len, i, tag = tei->tag; 575 const u32 max_resp_len = SB_RFB_MAX; 576 u32 phy_mask; 577 578 slot = &mvi->slot_info[tag]; 579 580 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap : 581 sas_port->phy_mask) & TXQ_PHY_MASK; 582 583 slot->tx = mvi->tx_prod; 584 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag | 585 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) | 586 (phy_mask << TXQ_PHY_SHIFT)); 587 588 flags = MCH_RETRY; 589 if (task->ssp_task.enable_first_burst) { 590 flags |= MCH_FBURST; 591 fburst = (1 << 7); 592 } 593 if (is_tmf) 594 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT); 595 else 596 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT); 597 598 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT)); 599 hdr->tags = cpu_to_le32(tag); 600 hdr->data_len = cpu_to_le32(task->total_xfer_len); 601 602 /* 603 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs 604 */ 605 606 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */ 607 buf_cmd = buf_tmp = slot->buf; 608 buf_tmp_dma = slot->buf_dma; 609 610 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); 611 612 buf_tmp += MVS_SSP_CMD_SZ; 613 buf_tmp_dma += MVS_SSP_CMD_SZ; 614 615 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ 616 buf_oaf = buf_tmp; 617 hdr->open_frame = cpu_to_le64(buf_tmp_dma); 618 619 buf_tmp += MVS_OAF_SZ; 620 buf_tmp_dma += MVS_OAF_SZ; 621 622 /* region 3: PRD table ********************************************* */ 623 buf_prd = buf_tmp; 624 if (tei->n_elem) 625 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); 626 else 627 hdr->prd_tbl = 0; 628 629 i = MVS_CHIP_DISP->prd_size() * tei->n_elem; 630 buf_tmp += i; 631 buf_tmp_dma += i; 632 633 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ 634 slot->response = buf_tmp; 635 hdr->status_buf = cpu_to_le64(buf_tmp_dma); 636 if (mvi->flags & MVF_FLAG_SOC) 637 hdr->reserved[0] = 0; 638 639 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ - 640 sizeof(struct mvs_err_info) - i; 641 resp_len = min(resp_len, max_resp_len); 642 643 req_len = sizeof(struct ssp_frame_hdr) + 28; 644 645 /* request, response lengths */ 646 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); 647 648 /* generate open address frame hdr (first 12 bytes) */ 649 /* initiator, SSP, ftype 1h */ 650 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1; 651 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; 652 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); 653 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); 654 655 /* fill in SSP frame header (Command Table.SSP frame header) */ 656 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd; 657 658 if (is_tmf) 659 ssp_hdr->frame_type = SSP_TASK; 660 else 661 ssp_hdr->frame_type = SSP_COMMAND; 662 663 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr, 664 HASHED_SAS_ADDR_SIZE); 665 memcpy(ssp_hdr->hashed_src_addr, 666 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); 667 ssp_hdr->tag = cpu_to_be16(tag); 668 669 /* fill in IU for TASK and Command Frame */ 670 buf_cmd += sizeof(*ssp_hdr); 671 memcpy(buf_cmd, &task->ssp_task.LUN, 8); 672 673 if (ssp_hdr->frame_type != SSP_TASK) { 674 buf_cmd[9] = fburst | task->ssp_task.task_attr | 675 (task->ssp_task.task_prio << 3); 676 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd, 677 task->ssp_task.cmd->cmd_len); 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 == SAS_PHY_UNUSED))) 698 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf, 699 struct sas_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 != SAS_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 = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma); 781 if (!slot->buf) { 782 rc = -ENOMEM; 783 goto err_out_tag; 784 } 785 786 tei.task = task; 787 tei.hdr = &mvi->slot[tag]; 788 tei.tag = tag; 789 tei.n_elem = n_elem; 790 switch (task->task_proto) { 791 case SAS_PROTOCOL_SMP: 792 rc = mvs_task_prep_smp(mvi, &tei); 793 break; 794 case SAS_PROTOCOL_SSP: 795 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf); 796 break; 797 case SAS_PROTOCOL_SATA: 798 case SAS_PROTOCOL_STP: 799 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: 800 rc = mvs_task_prep_ata(mvi, &tei); 801 break; 802 default: 803 dev_printk(KERN_ERR, mvi->dev, 804 "unknown sas_task proto: 0x%x\n", 805 task->task_proto); 806 rc = -EINVAL; 807 break; 808 } 809 810 if (rc) { 811 mv_dprintk("rc is %x\n", rc); 812 goto err_out_slot_buf; 813 } 814 slot->task = task; 815 slot->port = tei.port; 816 task->lldd_task = slot; 817 list_add_tail(&slot->entry, &tei.port->list); 818 819 mvi_dev->running_req++; 820 ++(*pass); 821 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1); 822 823 return rc; 824 825 err_out_slot_buf: 826 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); 827 err_out_tag: 828 mvs_tag_free(mvi, tag); 829 err_out: 830 831 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc); 832 if (!sas_protocol_ata(task->task_proto)) 833 if (n_elem) 834 dma_unmap_sg(mvi->dev, task->scatter, n_elem, 835 task->data_dir); 836 prep_out: 837 return rc; 838 } 839 840 int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags) 841 { 842 struct mvs_info *mvi = NULL; 843 u32 rc = 0; 844 u32 pass = 0; 845 unsigned long flags = 0; 846 struct sas_tmf_task *tmf = task->tmf; 847 int is_tmf = !!task->tmf; 848 849 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info; 850 851 spin_lock_irqsave(&mvi->lock, flags); 852 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass); 853 if (rc) 854 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc); 855 856 if (likely(pass)) 857 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) & 858 (MVS_CHIP_SLOT_SZ - 1)); 859 spin_unlock_irqrestore(&mvi->lock, flags); 860 861 return rc; 862 } 863 864 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc) 865 { 866 u32 slot_idx = rx_desc & RXQ_SLOT_MASK; 867 mvs_tag_clear(mvi, slot_idx); 868 } 869 870 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, 871 struct mvs_slot_info *slot, u32 slot_idx) 872 { 873 if (!slot) 874 return; 875 if (!slot->task) 876 return; 877 if (!sas_protocol_ata(task->task_proto)) 878 if (slot->n_elem) 879 dma_unmap_sg(mvi->dev, task->scatter, 880 slot->n_elem, task->data_dir); 881 882 switch (task->task_proto) { 883 case SAS_PROTOCOL_SMP: 884 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1, 885 DMA_FROM_DEVICE); 886 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1, 887 DMA_TO_DEVICE); 888 break; 889 890 case SAS_PROTOCOL_SATA: 891 case SAS_PROTOCOL_STP: 892 case SAS_PROTOCOL_SSP: 893 default: 894 /* do nothing */ 895 break; 896 } 897 898 if (slot->buf) { 899 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); 900 slot->buf = NULL; 901 } 902 list_del_init(&slot->entry); 903 task->lldd_task = NULL; 904 slot->task = NULL; 905 slot->port = NULL; 906 slot->slot_tag = 0xFFFFFFFF; 907 mvs_slot_free(mvi, slot_idx); 908 } 909 910 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no) 911 { 912 struct mvs_phy *phy = &mvi->phy[phy_no]; 913 struct mvs_port *port = phy->port; 914 int j, no; 915 916 for_each_phy(port->wide_port_phymap, j, no) { 917 if (j & 1) { 918 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, 919 PHYR_WIDE_PORT); 920 MVS_CHIP_DISP->write_port_cfg_data(mvi, no, 921 port->wide_port_phymap); 922 } else { 923 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, 924 PHYR_WIDE_PORT); 925 MVS_CHIP_DISP->write_port_cfg_data(mvi, no, 926 0); 927 } 928 } 929 } 930 931 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i) 932 { 933 u32 tmp; 934 struct mvs_phy *phy = &mvi->phy[i]; 935 struct mvs_port *port = phy->port; 936 937 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i); 938 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) { 939 if (!port) 940 phy->phy_attached = 1; 941 return tmp; 942 } 943 944 if (port) { 945 if (phy->phy_type & PORT_TYPE_SAS) { 946 port->wide_port_phymap &= ~(1U << i); 947 if (!port->wide_port_phymap) 948 port->port_attached = 0; 949 mvs_update_wideport(mvi, i); 950 } else if (phy->phy_type & PORT_TYPE_SATA) 951 port->port_attached = 0; 952 phy->port = NULL; 953 phy->phy_attached = 0; 954 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA); 955 } 956 return 0; 957 } 958 959 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf) 960 { 961 u32 *s = (u32 *) buf; 962 963 if (!s) 964 return NULL; 965 966 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3); 967 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 968 969 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2); 970 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 971 972 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1); 973 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 974 975 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0); 976 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); 977 978 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01)) 979 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10); 980 981 return s; 982 } 983 984 static u32 mvs_is_sig_fis_received(u32 irq_status) 985 { 986 return irq_status & PHYEV_SIG_FIS; 987 } 988 989 static void mvs_sig_remove_timer(struct mvs_phy *phy) 990 { 991 if (phy->timer.function) 992 del_timer(&phy->timer); 993 phy->timer.function = NULL; 994 } 995 996 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st) 997 { 998 struct mvs_phy *phy = &mvi->phy[i]; 999 struct sas_identify_frame *id; 1000 1001 id = (struct sas_identify_frame *)phy->frame_rcvd; 1002 1003 if (get_st) { 1004 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i); 1005 phy->phy_status = mvs_is_phy_ready(mvi, i); 1006 } 1007 1008 if (phy->phy_status) { 1009 int oob_done = 0; 1010 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy; 1011 1012 oob_done = MVS_CHIP_DISP->oob_done(mvi, i); 1013 1014 MVS_CHIP_DISP->fix_phy_info(mvi, i, id); 1015 if (phy->phy_type & PORT_TYPE_SATA) { 1016 phy->identify.target_port_protocols = SAS_PROTOCOL_STP; 1017 if (mvs_is_sig_fis_received(phy->irq_status)) { 1018 mvs_sig_remove_timer(phy); 1019 phy->phy_attached = 1; 1020 phy->att_dev_sas_addr = 1021 i + mvi->id * mvi->chip->n_phy; 1022 if (oob_done) 1023 sas_phy->oob_mode = SATA_OOB_MODE; 1024 phy->frame_rcvd_size = 1025 sizeof(struct dev_to_host_fis); 1026 mvs_get_d2h_reg(mvi, i, id); 1027 } else { 1028 u32 tmp; 1029 dev_printk(KERN_DEBUG, mvi->dev, 1030 "Phy%d : No sig fis\n", i); 1031 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i); 1032 MVS_CHIP_DISP->write_port_irq_mask(mvi, i, 1033 tmp | PHYEV_SIG_FIS); 1034 phy->phy_attached = 0; 1035 phy->phy_type &= ~PORT_TYPE_SATA; 1036 goto out_done; 1037 } 1038 } else if (phy->phy_type & PORT_TYPE_SAS 1039 || phy->att_dev_info & PORT_SSP_INIT_MASK) { 1040 phy->phy_attached = 1; 1041 phy->identify.device_type = 1042 phy->att_dev_info & PORT_DEV_TYPE_MASK; 1043 1044 if (phy->identify.device_type == SAS_END_DEVICE) 1045 phy->identify.target_port_protocols = 1046 SAS_PROTOCOL_SSP; 1047 else if (phy->identify.device_type != SAS_PHY_UNUSED) 1048 phy->identify.target_port_protocols = 1049 SAS_PROTOCOL_SMP; 1050 if (oob_done) 1051 sas_phy->oob_mode = SAS_OOB_MODE; 1052 phy->frame_rcvd_size = 1053 sizeof(struct sas_identify_frame); 1054 } 1055 memcpy(sas_phy->attached_sas_addr, 1056 &phy->att_dev_sas_addr, SAS_ADDR_SIZE); 1057 1058 if (MVS_CHIP_DISP->phy_work_around) 1059 MVS_CHIP_DISP->phy_work_around(mvi, i); 1060 } 1061 mv_dprintk("phy %d attach dev info is %x\n", 1062 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info); 1063 mv_dprintk("phy %d attach sas addr is %llx\n", 1064 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr); 1065 out_done: 1066 if (get_st) 1067 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status); 1068 } 1069 1070 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock) 1071 { 1072 struct sas_ha_struct *sas_ha = sas_phy->ha; 1073 struct mvs_info *mvi = NULL; int i = 0, hi; 1074 struct mvs_phy *phy = sas_phy->lldd_phy; 1075 struct asd_sas_port *sas_port = sas_phy->port; 1076 struct mvs_port *port; 1077 unsigned long flags = 0; 1078 if (!sas_port) 1079 return; 1080 1081 while (sas_ha->sas_phy[i]) { 1082 if (sas_ha->sas_phy[i] == sas_phy) 1083 break; 1084 i++; 1085 } 1086 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy; 1087 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi]; 1088 if (i >= mvi->chip->n_phy) 1089 port = &mvi->port[i - mvi->chip->n_phy]; 1090 else 1091 port = &mvi->port[i]; 1092 if (lock) 1093 spin_lock_irqsave(&mvi->lock, flags); 1094 port->port_attached = 1; 1095 phy->port = port; 1096 sas_port->lldd_port = port; 1097 if (phy->phy_type & PORT_TYPE_SAS) { 1098 port->wide_port_phymap = sas_port->phy_mask; 1099 mv_printk("set wide port phy map %x\n", sas_port->phy_mask); 1100 mvs_update_wideport(mvi, sas_phy->id); 1101 1102 /* direct attached SAS device */ 1103 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) { 1104 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT); 1105 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04); 1106 } 1107 } 1108 if (lock) 1109 spin_unlock_irqrestore(&mvi->lock, flags); 1110 } 1111 1112 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock) 1113 { 1114 struct domain_device *dev; 1115 struct mvs_phy *phy = sas_phy->lldd_phy; 1116 struct mvs_info *mvi = phy->mvi; 1117 struct asd_sas_port *port = sas_phy->port; 1118 int phy_no = 0; 1119 1120 while (phy != &mvi->phy[phy_no]) { 1121 phy_no++; 1122 if (phy_no >= MVS_MAX_PHYS) 1123 return; 1124 } 1125 list_for_each_entry(dev, &port->dev_list, dev_list_node) 1126 mvs_do_release_task(phy->mvi, phy_no, dev); 1127 1128 } 1129 1130 1131 void mvs_port_formed(struct asd_sas_phy *sas_phy) 1132 { 1133 mvs_port_notify_formed(sas_phy, 1); 1134 } 1135 1136 void mvs_port_deformed(struct asd_sas_phy *sas_phy) 1137 { 1138 mvs_port_notify_deformed(sas_phy, 1); 1139 } 1140 1141 static struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi) 1142 { 1143 u32 dev; 1144 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) { 1145 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) { 1146 mvi->devices[dev].device_id = dev; 1147 return &mvi->devices[dev]; 1148 } 1149 } 1150 1151 if (dev == MVS_MAX_DEVICES) 1152 mv_printk("max support %d devices, ignore ..\n", 1153 MVS_MAX_DEVICES); 1154 1155 return NULL; 1156 } 1157 1158 static void mvs_free_dev(struct mvs_device *mvi_dev) 1159 { 1160 u32 id = mvi_dev->device_id; 1161 memset(mvi_dev, 0, sizeof(*mvi_dev)); 1162 mvi_dev->device_id = id; 1163 mvi_dev->dev_type = SAS_PHY_UNUSED; 1164 mvi_dev->dev_status = MVS_DEV_NORMAL; 1165 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED; 1166 } 1167 1168 static int mvs_dev_found_notify(struct domain_device *dev, int lock) 1169 { 1170 unsigned long flags = 0; 1171 int res = 0; 1172 struct mvs_info *mvi = NULL; 1173 struct domain_device *parent_dev = dev->parent; 1174 struct mvs_device *mvi_device; 1175 1176 mvi = mvs_find_dev_mvi(dev); 1177 1178 if (lock) 1179 spin_lock_irqsave(&mvi->lock, flags); 1180 1181 mvi_device = mvs_alloc_dev(mvi); 1182 if (!mvi_device) { 1183 res = -1; 1184 goto found_out; 1185 } 1186 dev->lldd_dev = mvi_device; 1187 mvi_device->dev_status = MVS_DEV_NORMAL; 1188 mvi_device->dev_type = dev->dev_type; 1189 mvi_device->mvi_info = mvi; 1190 mvi_device->sas_device = dev; 1191 if (parent_dev && dev_is_expander(parent_dev->dev_type)) { 1192 int phy_id; 1193 u8 phy_num = parent_dev->ex_dev.num_phys; 1194 struct ex_phy *phy; 1195 for (phy_id = 0; phy_id < phy_num; phy_id++) { 1196 phy = &parent_dev->ex_dev.ex_phy[phy_id]; 1197 if (SAS_ADDR(phy->attached_sas_addr) == 1198 SAS_ADDR(dev->sas_addr)) { 1199 mvi_device->attached_phy = phy_id; 1200 break; 1201 } 1202 } 1203 1204 if (phy_id == phy_num) { 1205 mv_printk("Error: no attached dev:%016llx" 1206 "at ex:%016llx.\n", 1207 SAS_ADDR(dev->sas_addr), 1208 SAS_ADDR(parent_dev->sas_addr)); 1209 res = -1; 1210 } 1211 } 1212 1213 found_out: 1214 if (lock) 1215 spin_unlock_irqrestore(&mvi->lock, flags); 1216 return res; 1217 } 1218 1219 int mvs_dev_found(struct domain_device *dev) 1220 { 1221 return mvs_dev_found_notify(dev, 1); 1222 } 1223 1224 static void mvs_dev_gone_notify(struct domain_device *dev) 1225 { 1226 unsigned long flags = 0; 1227 struct mvs_device *mvi_dev = dev->lldd_dev; 1228 struct mvs_info *mvi; 1229 1230 if (!mvi_dev) { 1231 mv_dprintk("found dev has gone.\n"); 1232 return; 1233 } 1234 1235 mvi = mvi_dev->mvi_info; 1236 1237 spin_lock_irqsave(&mvi->lock, flags); 1238 1239 mv_dprintk("found dev[%d:%x] is gone.\n", 1240 mvi_dev->device_id, mvi_dev->dev_type); 1241 mvs_release_task(mvi, dev); 1242 mvs_free_reg_set(mvi, mvi_dev); 1243 mvs_free_dev(mvi_dev); 1244 1245 dev->lldd_dev = NULL; 1246 mvi_dev->sas_device = NULL; 1247 1248 spin_unlock_irqrestore(&mvi->lock, flags); 1249 } 1250 1251 1252 void mvs_dev_gone(struct domain_device *dev) 1253 { 1254 mvs_dev_gone_notify(dev); 1255 } 1256 1257 static void mvs_task_done(struct sas_task *task) 1258 { 1259 if (!del_timer(&task->slow_task->timer)) 1260 return; 1261 complete(&task->slow_task->completion); 1262 } 1263 1264 static void mvs_tmf_timedout(struct timer_list *t) 1265 { 1266 struct sas_task_slow *slow = from_timer(slow, t, timer); 1267 struct sas_task *task = slow->task; 1268 1269 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 1270 complete(&task->slow_task->completion); 1271 } 1272 1273 #define MVS_TASK_TIMEOUT 20 1274 static int mvs_exec_internal_tmf_task(struct domain_device *dev, 1275 void *parameter, u32 para_len, struct sas_tmf_task *tmf) 1276 { 1277 int res, retry; 1278 struct sas_task *task = NULL; 1279 1280 for (retry = 0; retry < 3; retry++) { 1281 task = sas_alloc_slow_task(GFP_KERNEL); 1282 if (!task) 1283 return -ENOMEM; 1284 1285 task->dev = dev; 1286 task->task_proto = dev->tproto; 1287 1288 memcpy(&task->ssp_task, parameter, para_len); 1289 task->task_done = mvs_task_done; 1290 1291 task->slow_task->timer.function = mvs_tmf_timedout; 1292 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ; 1293 add_timer(&task->slow_task->timer); 1294 1295 task->tmf = tmf; 1296 1297 res = mvs_queue_command(task, GFP_KERNEL); 1298 1299 if (res) { 1300 del_timer(&task->slow_task->timer); 1301 mv_printk("executing internal task failed:%d\n", res); 1302 goto ex_err; 1303 } 1304 1305 wait_for_completion(&task->slow_task->completion); 1306 res = TMF_RESP_FUNC_FAILED; 1307 /* Even TMF timed out, return direct. */ 1308 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 1309 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 1310 mv_printk("TMF task[%x] timeout.\n", tmf->tmf); 1311 goto ex_err; 1312 } 1313 } 1314 1315 if (task->task_status.resp == SAS_TASK_COMPLETE && 1316 task->task_status.stat == SAS_SAM_STAT_GOOD) { 1317 res = TMF_RESP_FUNC_COMPLETE; 1318 break; 1319 } 1320 1321 if (task->task_status.resp == SAS_TASK_COMPLETE && 1322 task->task_status.stat == SAS_DATA_UNDERRUN) { 1323 /* no error, but return the number of bytes of 1324 * underrun */ 1325 res = task->task_status.residual; 1326 break; 1327 } 1328 1329 if (task->task_status.resp == SAS_TASK_COMPLETE && 1330 task->task_status.stat == SAS_DATA_OVERRUN) { 1331 mv_dprintk("blocked task error.\n"); 1332 res = -EMSGSIZE; 1333 break; 1334 } else { 1335 mv_dprintk(" task to dev %016llx response: 0x%x " 1336 "status 0x%x\n", 1337 SAS_ADDR(dev->sas_addr), 1338 task->task_status.resp, 1339 task->task_status.stat); 1340 sas_free_task(task); 1341 task = NULL; 1342 1343 } 1344 } 1345 ex_err: 1346 BUG_ON(retry == 3 && task != NULL); 1347 sas_free_task(task); 1348 return res; 1349 } 1350 1351 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev, 1352 u8 *lun, struct sas_tmf_task *tmf) 1353 { 1354 struct sas_ssp_task ssp_task; 1355 if (!(dev->tproto & SAS_PROTOCOL_SSP)) 1356 return TMF_RESP_FUNC_ESUPP; 1357 1358 memcpy(ssp_task.LUN, lun, 8); 1359 1360 return mvs_exec_internal_tmf_task(dev, &ssp_task, 1361 sizeof(ssp_task), tmf); 1362 } 1363 1364 1365 /* Standard mandates link reset for ATA (type 0) 1366 and hard reset for SSP (type 1) , only for RECOVERY */ 1367 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev) 1368 { 1369 int rc; 1370 struct sas_phy *phy = sas_get_local_phy(dev); 1371 int reset_type = (dev->dev_type == SAS_SATA_DEV || 1372 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; 1373 rc = sas_phy_reset(phy, reset_type); 1374 sas_put_local_phy(phy); 1375 msleep(2000); 1376 return rc; 1377 } 1378 1379 /* mandatory SAM-3 */ 1380 int mvs_lu_reset(struct domain_device *dev, u8 *lun) 1381 { 1382 unsigned long flags; 1383 int rc = TMF_RESP_FUNC_FAILED; 1384 struct sas_tmf_task tmf_task; 1385 struct mvs_device * mvi_dev = dev->lldd_dev; 1386 struct mvs_info *mvi = mvi_dev->mvi_info; 1387 1388 tmf_task.tmf = TMF_LU_RESET; 1389 mvi_dev->dev_status = MVS_DEV_EH; 1390 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1391 if (rc == TMF_RESP_FUNC_COMPLETE) { 1392 spin_lock_irqsave(&mvi->lock, flags); 1393 mvs_release_task(mvi, dev); 1394 spin_unlock_irqrestore(&mvi->lock, flags); 1395 } 1396 /* If failed, fall-through I_T_Nexus reset */ 1397 mv_printk("%s for device[%x]:rc= %d\n", __func__, 1398 mvi_dev->device_id, rc); 1399 return rc; 1400 } 1401 1402 int mvs_I_T_nexus_reset(struct domain_device *dev) 1403 { 1404 unsigned long flags; 1405 int rc = TMF_RESP_FUNC_FAILED; 1406 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1407 struct mvs_info *mvi = mvi_dev->mvi_info; 1408 1409 if (mvi_dev->dev_status != MVS_DEV_EH) 1410 return TMF_RESP_FUNC_COMPLETE; 1411 else 1412 mvi_dev->dev_status = MVS_DEV_NORMAL; 1413 rc = mvs_debug_I_T_nexus_reset(dev); 1414 mv_printk("%s for device[%x]:rc= %d\n", 1415 __func__, mvi_dev->device_id, rc); 1416 1417 spin_lock_irqsave(&mvi->lock, flags); 1418 mvs_release_task(mvi, dev); 1419 spin_unlock_irqrestore(&mvi->lock, flags); 1420 1421 return rc; 1422 } 1423 /* optional SAM-3 */ 1424 int mvs_query_task(struct sas_task *task) 1425 { 1426 u32 tag; 1427 struct scsi_lun lun; 1428 struct sas_tmf_task tmf_task; 1429 int rc = TMF_RESP_FUNC_FAILED; 1430 1431 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1432 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; 1433 struct domain_device *dev = task->dev; 1434 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1435 struct mvs_info *mvi = mvi_dev->mvi_info; 1436 1437 int_to_scsilun(cmnd->device->lun, &lun); 1438 rc = mvs_find_tag(mvi, task, &tag); 1439 if (rc == 0) { 1440 rc = TMF_RESP_FUNC_FAILED; 1441 return rc; 1442 } 1443 1444 tmf_task.tmf = TMF_QUERY_TASK; 1445 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); 1446 1447 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1448 switch (rc) { 1449 /* The task is still in Lun, release it then */ 1450 case TMF_RESP_FUNC_SUCC: 1451 /* The task is not in Lun or failed, reset the phy */ 1452 case TMF_RESP_FUNC_FAILED: 1453 case TMF_RESP_FUNC_COMPLETE: 1454 break; 1455 } 1456 } 1457 mv_printk("%s:rc= %d\n", __func__, rc); 1458 return rc; 1459 } 1460 1461 /* mandatory SAM-3, still need free task/slot info */ 1462 int mvs_abort_task(struct sas_task *task) 1463 { 1464 struct scsi_lun lun; 1465 struct sas_tmf_task tmf_task; 1466 struct domain_device *dev = task->dev; 1467 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; 1468 struct mvs_info *mvi; 1469 int rc = TMF_RESP_FUNC_FAILED; 1470 unsigned long flags; 1471 u32 tag; 1472 1473 if (!mvi_dev) { 1474 mv_printk("Device has removed\n"); 1475 return TMF_RESP_FUNC_FAILED; 1476 } 1477 1478 mvi = mvi_dev->mvi_info; 1479 1480 spin_lock_irqsave(&task->task_state_lock, flags); 1481 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1482 spin_unlock_irqrestore(&task->task_state_lock, flags); 1483 rc = TMF_RESP_FUNC_COMPLETE; 1484 goto out; 1485 } 1486 spin_unlock_irqrestore(&task->task_state_lock, flags); 1487 mvi_dev->dev_status = MVS_DEV_EH; 1488 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1489 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; 1490 1491 int_to_scsilun(cmnd->device->lun, &lun); 1492 rc = mvs_find_tag(mvi, task, &tag); 1493 if (rc == 0) { 1494 mv_printk("No such tag in %s\n", __func__); 1495 rc = TMF_RESP_FUNC_FAILED; 1496 return rc; 1497 } 1498 1499 tmf_task.tmf = TMF_ABORT_TASK; 1500 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); 1501 1502 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1503 1504 /* if successful, clear the task and callback forwards.*/ 1505 if (rc == TMF_RESP_FUNC_COMPLETE) { 1506 u32 slot_no; 1507 struct mvs_slot_info *slot; 1508 1509 if (task->lldd_task) { 1510 slot = task->lldd_task; 1511 slot_no = (u32) (slot - mvi->slot_info); 1512 spin_lock_irqsave(&mvi->lock, flags); 1513 mvs_slot_complete(mvi, slot_no, 1); 1514 spin_unlock_irqrestore(&mvi->lock, flags); 1515 } 1516 } 1517 1518 } else if (task->task_proto & SAS_PROTOCOL_SATA || 1519 task->task_proto & SAS_PROTOCOL_STP) { 1520 if (SAS_SATA_DEV == dev->dev_type) { 1521 struct mvs_slot_info *slot = task->lldd_task; 1522 u32 slot_idx = (u32)(slot - mvi->slot_info); 1523 mv_dprintk("mvs_abort_task() mvi=%p task=%p " 1524 "slot=%p slot_idx=x%x\n", 1525 mvi, task, slot, slot_idx); 1526 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 1527 mvs_slot_task_free(mvi, task, slot, slot_idx); 1528 rc = TMF_RESP_FUNC_COMPLETE; 1529 goto out; 1530 } 1531 1532 } 1533 out: 1534 if (rc != TMF_RESP_FUNC_COMPLETE) 1535 mv_printk("%s:rc= %d\n", __func__, rc); 1536 return rc; 1537 } 1538 1539 int mvs_abort_task_set(struct domain_device *dev, u8 *lun) 1540 { 1541 int rc; 1542 struct sas_tmf_task tmf_task; 1543 1544 tmf_task.tmf = TMF_ABORT_TASK_SET; 1545 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1546 1547 return rc; 1548 } 1549 1550 int mvs_clear_task_set(struct domain_device *dev, u8 *lun) 1551 { 1552 int rc = TMF_RESP_FUNC_FAILED; 1553 struct sas_tmf_task tmf_task; 1554 1555 tmf_task.tmf = TMF_CLEAR_TASK_SET; 1556 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); 1557 1558 return rc; 1559 } 1560 1561 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task, 1562 u32 slot_idx, int err) 1563 { 1564 struct mvs_device *mvi_dev = task->dev->lldd_dev; 1565 struct task_status_struct *tstat = &task->task_status; 1566 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf; 1567 int stat = SAM_STAT_GOOD; 1568 1569 1570 resp->frame_len = sizeof(struct dev_to_host_fis); 1571 memcpy(&resp->ending_fis[0], 1572 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset), 1573 sizeof(struct dev_to_host_fis)); 1574 tstat->buf_valid_size = sizeof(*resp); 1575 if (unlikely(err)) { 1576 if (unlikely(err & CMD_ISS_STPD)) 1577 stat = SAS_OPEN_REJECT; 1578 else 1579 stat = SAS_PROTO_RESPONSE; 1580 } 1581 1582 return stat; 1583 } 1584 1585 static void mvs_set_sense(u8 *buffer, int len, int d_sense, 1586 int key, int asc, int ascq) 1587 { 1588 memset(buffer, 0, len); 1589 1590 if (d_sense) { 1591 /* Descriptor format */ 1592 if (len < 4) { 1593 mv_printk("Length %d of sense buffer too small to " 1594 "fit sense %x:%x:%x", len, key, asc, ascq); 1595 } 1596 1597 buffer[0] = 0x72; /* Response Code */ 1598 if (len > 1) 1599 buffer[1] = key; /* Sense Key */ 1600 if (len > 2) 1601 buffer[2] = asc; /* ASC */ 1602 if (len > 3) 1603 buffer[3] = ascq; /* ASCQ */ 1604 } else { 1605 if (len < 14) { 1606 mv_printk("Length %d of sense buffer too small to " 1607 "fit sense %x:%x:%x", len, key, asc, ascq); 1608 } 1609 1610 buffer[0] = 0x70; /* Response Code */ 1611 if (len > 2) 1612 buffer[2] = key; /* Sense Key */ 1613 if (len > 7) 1614 buffer[7] = 0x0a; /* Additional Sense Length */ 1615 if (len > 12) 1616 buffer[12] = asc; /* ASC */ 1617 if (len > 13) 1618 buffer[13] = ascq; /* ASCQ */ 1619 } 1620 1621 return; 1622 } 1623 1624 static void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu, 1625 u8 key, u8 asc, u8 asc_q) 1626 { 1627 iu->datapres = SAS_DATAPRES_SENSE_DATA; 1628 iu->response_data_len = 0; 1629 iu->sense_data_len = 17; 1630 iu->status = 02; 1631 mvs_set_sense(iu->sense_data, 17, 0, 1632 key, asc, asc_q); 1633 } 1634 1635 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task, 1636 u32 slot_idx) 1637 { 1638 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; 1639 int stat; 1640 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response); 1641 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1)); 1642 u32 tfs = 0; 1643 enum mvs_port_type type = PORT_TYPE_SAS; 1644 1645 if (err_dw0 & CMD_ISS_STPD) 1646 MVS_CHIP_DISP->issue_stop(mvi, type, tfs); 1647 1648 MVS_CHIP_DISP->command_active(mvi, slot_idx); 1649 1650 stat = SAM_STAT_CHECK_CONDITION; 1651 switch (task->task_proto) { 1652 case SAS_PROTOCOL_SSP: 1653 { 1654 stat = SAS_ABORTED_TASK; 1655 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) { 1656 struct ssp_response_iu *iu = slot->response + 1657 sizeof(struct mvs_err_info); 1658 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01); 1659 sas_ssp_task_response(mvi->dev, task, iu); 1660 stat = SAM_STAT_CHECK_CONDITION; 1661 } 1662 if (err_dw1 & bit(31)) 1663 mv_printk("reuse same slot, retry command.\n"); 1664 break; 1665 } 1666 case SAS_PROTOCOL_SMP: 1667 stat = SAM_STAT_CHECK_CONDITION; 1668 break; 1669 1670 case SAS_PROTOCOL_SATA: 1671 case SAS_PROTOCOL_STP: 1672 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: 1673 { 1674 task->ata_task.use_ncq = 0; 1675 stat = SAS_PROTO_RESPONSE; 1676 mvs_sata_done(mvi, task, slot_idx, err_dw0); 1677 } 1678 break; 1679 default: 1680 break; 1681 } 1682 1683 return stat; 1684 } 1685 1686 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) 1687 { 1688 u32 slot_idx = rx_desc & RXQ_SLOT_MASK; 1689 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; 1690 struct sas_task *task = slot->task; 1691 struct mvs_device *mvi_dev = NULL; 1692 struct task_status_struct *tstat; 1693 struct domain_device *dev; 1694 u32 aborted; 1695 1696 void *to; 1697 enum exec_status sts; 1698 1699 if (unlikely(!task || !task->lldd_task || !task->dev)) 1700 return -1; 1701 1702 tstat = &task->task_status; 1703 dev = task->dev; 1704 mvi_dev = dev->lldd_dev; 1705 1706 spin_lock(&task->task_state_lock); 1707 task->task_state_flags &= ~SAS_TASK_STATE_PENDING; 1708 task->task_state_flags |= SAS_TASK_STATE_DONE; 1709 /* race condition*/ 1710 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED; 1711 spin_unlock(&task->task_state_lock); 1712 1713 memset(tstat, 0, sizeof(*tstat)); 1714 tstat->resp = SAS_TASK_COMPLETE; 1715 1716 if (unlikely(aborted)) { 1717 tstat->stat = SAS_ABORTED_TASK; 1718 if (mvi_dev && mvi_dev->running_req) 1719 mvi_dev->running_req--; 1720 if (sas_protocol_ata(task->task_proto)) 1721 mvs_free_reg_set(mvi, mvi_dev); 1722 1723 mvs_slot_task_free(mvi, task, slot, slot_idx); 1724 return -1; 1725 } 1726 1727 /* when no device attaching, go ahead and complete by error handling*/ 1728 if (unlikely(!mvi_dev || flags)) { 1729 if (!mvi_dev) 1730 mv_dprintk("port has not device.\n"); 1731 tstat->stat = SAS_PHY_DOWN; 1732 goto out; 1733 } 1734 1735 /* 1736 * error info record present; slot->response is 32 bit aligned but may 1737 * not be 64 bit aligned, so check for zero in two 32 bit reads 1738 */ 1739 if (unlikely((rx_desc & RXQ_ERR) 1740 && (*((u32 *)slot->response) 1741 || *(((u32 *)slot->response) + 1)))) { 1742 mv_dprintk("port %d slot %d rx_desc %X has error info" 1743 "%016llX.\n", slot->port->sas_port.id, slot_idx, 1744 rx_desc, get_unaligned_le64(slot->response)); 1745 tstat->stat = mvs_slot_err(mvi, task, slot_idx); 1746 tstat->resp = SAS_TASK_COMPLETE; 1747 goto out; 1748 } 1749 1750 switch (task->task_proto) { 1751 case SAS_PROTOCOL_SSP: 1752 /* hw says status == 0, datapres == 0 */ 1753 if (rx_desc & RXQ_GOOD) { 1754 tstat->stat = SAS_SAM_STAT_GOOD; 1755 tstat->resp = SAS_TASK_COMPLETE; 1756 } 1757 /* response frame present */ 1758 else if (rx_desc & RXQ_RSP) { 1759 struct ssp_response_iu *iu = slot->response + 1760 sizeof(struct mvs_err_info); 1761 sas_ssp_task_response(mvi->dev, task, iu); 1762 } else 1763 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; 1764 break; 1765 1766 case SAS_PROTOCOL_SMP: { 1767 struct scatterlist *sg_resp = &task->smp_task.smp_resp; 1768 tstat->stat = SAS_SAM_STAT_GOOD; 1769 to = kmap_atomic(sg_page(sg_resp)); 1770 memcpy(to + sg_resp->offset, 1771 slot->response + sizeof(struct mvs_err_info), 1772 sg_dma_len(sg_resp)); 1773 kunmap_atomic(to); 1774 break; 1775 } 1776 1777 case SAS_PROTOCOL_SATA: 1778 case SAS_PROTOCOL_STP: 1779 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: { 1780 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0); 1781 break; 1782 } 1783 1784 default: 1785 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; 1786 break; 1787 } 1788 if (!slot->port->port_attached) { 1789 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id); 1790 tstat->stat = SAS_PHY_DOWN; 1791 } 1792 1793 1794 out: 1795 if (mvi_dev && mvi_dev->running_req) { 1796 mvi_dev->running_req--; 1797 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req) 1798 mvs_free_reg_set(mvi, mvi_dev); 1799 } 1800 mvs_slot_task_free(mvi, task, slot, slot_idx); 1801 sts = tstat->stat; 1802 1803 spin_unlock(&mvi->lock); 1804 if (task->task_done) 1805 task->task_done(task); 1806 1807 spin_lock(&mvi->lock); 1808 1809 return sts; 1810 } 1811 1812 void mvs_do_release_task(struct mvs_info *mvi, 1813 int phy_no, struct domain_device *dev) 1814 { 1815 u32 slot_idx; 1816 struct mvs_phy *phy; 1817 struct mvs_port *port; 1818 struct mvs_slot_info *slot, *slot2; 1819 1820 phy = &mvi->phy[phy_no]; 1821 port = phy->port; 1822 if (!port) 1823 return; 1824 /* clean cmpl queue in case request is already finished */ 1825 mvs_int_rx(mvi, false); 1826 1827 1828 1829 list_for_each_entry_safe(slot, slot2, &port->list, entry) { 1830 struct sas_task *task; 1831 slot_idx = (u32) (slot - mvi->slot_info); 1832 task = slot->task; 1833 1834 if (dev && task->dev != dev) 1835 continue; 1836 1837 mv_printk("Release slot [%x] tag[%x], task [%p]:\n", 1838 slot_idx, slot->slot_tag, task); 1839 MVS_CHIP_DISP->command_active(mvi, slot_idx); 1840 1841 mvs_slot_complete(mvi, slot_idx, 1); 1842 } 1843 } 1844 1845 void mvs_release_task(struct mvs_info *mvi, 1846 struct domain_device *dev) 1847 { 1848 int i, phyno[WIDE_PORT_MAX_PHY], num; 1849 num = mvs_find_dev_phyno(dev, phyno); 1850 for (i = 0; i < num; i++) 1851 mvs_do_release_task(mvi, phyno[i], dev); 1852 } 1853 1854 static void mvs_phy_disconnected(struct mvs_phy *phy) 1855 { 1856 phy->phy_attached = 0; 1857 phy->att_dev_info = 0; 1858 phy->att_dev_sas_addr = 0; 1859 } 1860 1861 static void mvs_work_queue(struct work_struct *work) 1862 { 1863 struct delayed_work *dw = container_of(work, struct delayed_work, work); 1864 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q); 1865 struct mvs_info *mvi = mwq->mvi; 1866 unsigned long flags; 1867 u32 phy_no = (unsigned long) mwq->data; 1868 struct mvs_phy *phy = &mvi->phy[phy_no]; 1869 struct asd_sas_phy *sas_phy = &phy->sas_phy; 1870 1871 spin_lock_irqsave(&mvi->lock, flags); 1872 if (mwq->handler & PHY_PLUG_EVENT) { 1873 1874 if (phy->phy_event & PHY_PLUG_OUT) { 1875 u32 tmp; 1876 1877 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no); 1878 phy->phy_event &= ~PHY_PLUG_OUT; 1879 if (!(tmp & PHY_READY_MASK)) { 1880 sas_phy_disconnected(sas_phy); 1881 mvs_phy_disconnected(phy); 1882 sas_notify_phy_event(sas_phy, 1883 PHYE_LOSS_OF_SIGNAL, GFP_ATOMIC); 1884 mv_dprintk("phy%d Removed Device\n", phy_no); 1885 } else { 1886 MVS_CHIP_DISP->detect_porttype(mvi, phy_no); 1887 mvs_update_phyinfo(mvi, phy_no, 1); 1888 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC); 1889 mvs_port_notify_formed(sas_phy, 0); 1890 mv_dprintk("phy%d Attached Device\n", phy_no); 1891 } 1892 } 1893 } else if (mwq->handler & EXP_BRCT_CHG) { 1894 phy->phy_event &= ~EXP_BRCT_CHG; 1895 sas_notify_port_event(sas_phy, 1896 PORTE_BROADCAST_RCVD, GFP_ATOMIC); 1897 mv_dprintk("phy%d Got Broadcast Change\n", phy_no); 1898 } 1899 list_del(&mwq->entry); 1900 spin_unlock_irqrestore(&mvi->lock, flags); 1901 kfree(mwq); 1902 } 1903 1904 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler) 1905 { 1906 struct mvs_wq *mwq; 1907 int ret = 0; 1908 1909 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC); 1910 if (mwq) { 1911 mwq->mvi = mvi; 1912 mwq->data = data; 1913 mwq->handler = handler; 1914 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq); 1915 list_add_tail(&mwq->entry, &mvi->wq_list); 1916 schedule_delayed_work(&mwq->work_q, HZ * 2); 1917 } else 1918 ret = -ENOMEM; 1919 1920 return ret; 1921 } 1922 1923 static void mvs_sig_time_out(struct timer_list *t) 1924 { 1925 struct mvs_phy *phy = from_timer(phy, t, timer); 1926 struct mvs_info *mvi = phy->mvi; 1927 u8 phy_no; 1928 1929 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) { 1930 if (&mvi->phy[phy_no] == phy) { 1931 mv_dprintk("Get signature time out, reset phy %d\n", 1932 phy_no+mvi->id*mvi->chip->n_phy); 1933 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET); 1934 } 1935 } 1936 } 1937 1938 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events) 1939 { 1940 u32 tmp; 1941 struct mvs_phy *phy = &mvi->phy[phy_no]; 1942 1943 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no); 1944 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status); 1945 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy, 1946 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no)); 1947 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy, 1948 phy->irq_status); 1949 1950 /* 1951 * events is port event now , 1952 * we need check the interrupt status which belongs to per port. 1953 */ 1954 1955 if (phy->irq_status & PHYEV_DCDR_ERR) { 1956 mv_dprintk("phy %d STP decoding error.\n", 1957 phy_no + mvi->id*mvi->chip->n_phy); 1958 } 1959 1960 if (phy->irq_status & PHYEV_POOF) { 1961 mdelay(500); 1962 if (!(phy->phy_event & PHY_PLUG_OUT)) { 1963 int dev_sata = phy->phy_type & PORT_TYPE_SATA; 1964 int ready; 1965 mvs_do_release_task(mvi, phy_no, NULL); 1966 phy->phy_event |= PHY_PLUG_OUT; 1967 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1); 1968 mvs_handle_event(mvi, 1969 (void *)(unsigned long)phy_no, 1970 PHY_PLUG_EVENT); 1971 ready = mvs_is_phy_ready(mvi, phy_no); 1972 if (ready || dev_sata) { 1973 if (MVS_CHIP_DISP->stp_reset) 1974 MVS_CHIP_DISP->stp_reset(mvi, 1975 phy_no); 1976 else 1977 MVS_CHIP_DISP->phy_reset(mvi, 1978 phy_no, MVS_SOFT_RESET); 1979 return; 1980 } 1981 } 1982 } 1983 1984 if (phy->irq_status & PHYEV_COMWAKE) { 1985 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no); 1986 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no, 1987 tmp | PHYEV_SIG_FIS); 1988 if (phy->timer.function == NULL) { 1989 phy->timer.function = mvs_sig_time_out; 1990 phy->timer.expires = jiffies + 5*HZ; 1991 add_timer(&phy->timer); 1992 } 1993 } 1994 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) { 1995 phy->phy_status = mvs_is_phy_ready(mvi, phy_no); 1996 mv_dprintk("notify plug in on phy[%d]\n", phy_no); 1997 if (phy->phy_status) { 1998 mdelay(10); 1999 MVS_CHIP_DISP->detect_porttype(mvi, phy_no); 2000 if (phy->phy_type & PORT_TYPE_SATA) { 2001 tmp = MVS_CHIP_DISP->read_port_irq_mask( 2002 mvi, phy_no); 2003 tmp &= ~PHYEV_SIG_FIS; 2004 MVS_CHIP_DISP->write_port_irq_mask(mvi, 2005 phy_no, tmp); 2006 } 2007 mvs_update_phyinfo(mvi, phy_no, 0); 2008 if (phy->phy_type & PORT_TYPE_SAS) { 2009 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE); 2010 mdelay(10); 2011 } 2012 2013 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC); 2014 /* whether driver is going to handle hot plug */ 2015 if (phy->phy_event & PHY_PLUG_OUT) { 2016 mvs_port_notify_formed(&phy->sas_phy, 0); 2017 phy->phy_event &= ~PHY_PLUG_OUT; 2018 } 2019 } else { 2020 mv_dprintk("plugin interrupt but phy%d is gone\n", 2021 phy_no + mvi->id*mvi->chip->n_phy); 2022 } 2023 } else if (phy->irq_status & PHYEV_BROAD_CH) { 2024 mv_dprintk("phy %d broadcast change.\n", 2025 phy_no + mvi->id*mvi->chip->n_phy); 2026 mvs_handle_event(mvi, (void *)(unsigned long)phy_no, 2027 EXP_BRCT_CHG); 2028 } 2029 } 2030 2031 int mvs_int_rx(struct mvs_info *mvi, bool self_clear) 2032 { 2033 u32 rx_prod_idx, rx_desc; 2034 bool attn = false; 2035 2036 /* the first dword in the RX ring is special: it contains 2037 * a mirror of the hardware's RX producer index, so that 2038 * we don't have to stall the CPU reading that register. 2039 * The actual RX ring is offset by one dword, due to this. 2040 */ 2041 rx_prod_idx = mvi->rx_cons; 2042 mvi->rx_cons = le32_to_cpu(mvi->rx[0]); 2043 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */ 2044 return 0; 2045 2046 /* The CMPL_Q may come late, read from register and try again 2047 * note: if coalescing is enabled, 2048 * it will need to read from register every time for sure 2049 */ 2050 if (unlikely(mvi->rx_cons == rx_prod_idx)) 2051 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK; 2052 2053 if (mvi->rx_cons == rx_prod_idx) 2054 return 0; 2055 2056 while (mvi->rx_cons != rx_prod_idx) { 2057 /* increment our internal RX consumer pointer */ 2058 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1); 2059 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]); 2060 2061 if (likely(rx_desc & RXQ_DONE)) 2062 mvs_slot_complete(mvi, rx_desc, 0); 2063 if (rx_desc & RXQ_ATTN) { 2064 attn = true; 2065 } else if (rx_desc & RXQ_ERR) { 2066 if (!(rx_desc & RXQ_DONE)) 2067 mvs_slot_complete(mvi, rx_desc, 0); 2068 } else if (rx_desc & RXQ_SLOT_RESET) { 2069 mvs_slot_free(mvi, rx_desc); 2070 } 2071 } 2072 2073 if (attn && self_clear) 2074 MVS_CHIP_DISP->int_full(mvi); 2075 return 0; 2076 } 2077 2078 int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index, 2079 u8 reg_count, u8 *write_data) 2080 { 2081 struct mvs_prv_info *mvs_prv = sha->lldd_ha; 2082 struct mvs_info *mvi = mvs_prv->mvi[0]; 2083 2084 if (MVS_CHIP_DISP->gpio_write) { 2085 return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type, 2086 reg_index, reg_count, write_data); 2087 } 2088 2089 return -ENOSYS; 2090 } 2091