drivers/scsi/hisi_sas/hisi_sas_main.c

   1 /*
   2  * Copyright (c) 2015 Linaro Ltd.
   3  * Copyright (c) 2015 Hisilicon Limited.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  */
  11
  12 #include "hisi_sas.h"
  13 #define DRV_NAME "hisi_sas"
  14
  15 #define DEV_IS_EXPANDER(type) \
  16         ((type == SAS_EDGE_EXPANDER_DEVICE) || \
  17         (type == SAS_FANOUT_EXPANDER_DEVICE))
  18
  19 #define DEV_IS_GONE(dev) \
  20         ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
  21
  22 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
  23 {
  24         return device->port->ha->lldd_ha;
  25 }
  26
  27 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
  28 {
  29         void *bitmap = hisi_hba->slot_index_tags;
  30
  31         clear_bit(slot_idx, bitmap);
  32 }
  33
  34 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
  35 {
  36         hisi_sas_slot_index_clear(hisi_hba, slot_idx);
  37 }
  38
  39 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
  40 {
  41         void *bitmap = hisi_hba->slot_index_tags;
  42
  43         set_bit(slot_idx, bitmap);
  44 }
  45
  46 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx)
  47 {
  48         unsigned int index;
  49         void *bitmap = hisi_hba->slot_index_tags;
  50
  51         index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count);
  52         if (index >= hisi_hba->slot_index_count)
  53                 return -SAS_QUEUE_FULL;
  54         hisi_sas_slot_index_set(hisi_hba, index);
  55         *slot_idx = index;
  56         return 0;
  57 }
  58
  59 static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
  60 {
  61         int i;
  62
  63         for (i = 0; i < hisi_hba->slot_index_count; ++i)
  64                 hisi_sas_slot_index_clear(hisi_hba, i);
  65 }
  66
  67 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
  68                              struct hisi_sas_slot *slot)
  69 {
  70         struct device *dev = &hisi_hba->pdev->dev;
  71
  72         if (!slot->task)
  73                 return;
  74
  75         if (!sas_protocol_ata(task->task_proto))
  76                 if (slot->n_elem)
  77                         dma_unmap_sg(dev, task->scatter, slot->n_elem,
  78                                      task->data_dir);
  79
  80         if (slot->command_table)
  81                 dma_pool_free(hisi_hba->command_table_pool,
  82                               slot->command_table, slot->command_table_dma);
  83
  84         if (slot->status_buffer)
  85                 dma_pool_free(hisi_hba->status_buffer_pool,
  86                               slot->status_buffer, slot->status_buffer_dma);
  87
  88         if (slot->sge_page)
  89                 dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page,
  90                               slot->sge_page_dma);
  91
  92         list_del_init(&slot->entry);
  93         task->lldd_task = NULL;
  94         slot->task = NULL;
  95         slot->port = NULL;
  96         hisi_sas_slot_index_free(hisi_hba, slot->idx);
  97         memset(slot, 0, sizeof(*slot));
  98 }
  99 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
 100
 101 static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
 102                                   struct hisi_sas_slot *slot)
 103 {
 104         return hisi_hba->hw->prep_smp(hisi_hba, slot);
 105 }
 106
 107 static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
 108                                   struct hisi_sas_slot *slot, int is_tmf,
 109                                   struct hisi_sas_tmf_task *tmf)
 110 {
 111         return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf);
 112 }
 113
 114 static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba,
 115                               int is_tmf, struct hisi_sas_tmf_task *tmf,
 116                               int *pass)
 117 {
 118         struct domain_device *device = task->dev;
 119         struct hisi_sas_device *sas_dev = device->lldd_dev;
 120         struct hisi_sas_port *port;
 121         struct hisi_sas_slot *slot;
 122         struct hisi_sas_cmd_hdr *cmd_hdr_base;
 123         struct device *dev = &hisi_hba->pdev->dev;
 124         int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
 125
 126         if (!device->port) {
 127                 struct task_status_struct *ts = &task->task_status;
 128
 129                 ts->resp = SAS_TASK_UNDELIVERED;
 130                 ts->stat = SAS_PHY_DOWN;
 131                 /*
 132                  * libsas will use dev->port, should
 133                  * not call task_done for sata
 134                  */
 135                 if (device->dev_type != SAS_SATA_DEV)
 136                         task->task_done(task);
 137                 return 0;
 138         }
 139
 140         if (DEV_IS_GONE(sas_dev)) {
 141                 if (sas_dev)
 142                         dev_info(dev, "task prep: device %llu not ready\n",
 143                                  sas_dev->device_id);
 144                 else
 145                         dev_info(dev, "task prep: device %016llx not ready\n",
 146                                  SAS_ADDR(device->sas_addr));
 147
 148                 rc = SAS_PHY_DOWN;
 149                 return rc;
 150         }
 151         port = device->port->lldd_port;
 152         if (port && !port->port_attached && !tmf) {
 153                 if (sas_protocol_ata(task->task_proto)) {
 154                         struct task_status_struct *ts = &task->task_status;
 155
 156                         dev_info(dev,
 157                                  "task prep: SATA/STP port%d not attach device\n",
 158                                  device->port->id);
 159                         ts->resp = SAS_TASK_COMPLETE;
 160                         ts->stat = SAS_PHY_DOWN;
 161                         task->task_done(task);
 162                 } else {
 163                         struct task_status_struct *ts = &task->task_status;
 164
 165                         dev_info(dev,
 166                                  "task prep: SAS port%d does not attach device\n",
 167                                  device->port->id);
 168                         ts->resp = SAS_TASK_UNDELIVERED;
 169                         ts->stat = SAS_PHY_DOWN;
 170                         task->task_done(task);
 171                 }
 172                 return 0;
 173         }
 174
 175         if (!sas_protocol_ata(task->task_proto)) {
 176                 if (task->num_scatter) {
 177                         n_elem = dma_map_sg(dev, task->scatter,
 178                                             task->num_scatter, task->data_dir);
 179                         if (!n_elem) {
 180                                 rc = -ENOMEM;
 181                                 goto prep_out;
 182                         }
 183                 }
 184         } else
 185                 n_elem = task->num_scatter;
 186
 187         rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
 188         if (rc)
 189                 goto err_out;
 190         rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue,
 191                                          &dlvry_queue_slot);
 192         if (rc)
 193                 goto err_out_tag;
 194
 195         slot = &hisi_hba->slot_info[slot_idx];
 196         memset(slot, 0, sizeof(struct hisi_sas_slot));
 197
 198         slot->idx = slot_idx;
 199         slot->n_elem = n_elem;
 200         slot->dlvry_queue = dlvry_queue;
 201         slot->dlvry_queue_slot = dlvry_queue_slot;
 202         cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
 203         slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
 204         slot->task = task;
 205         slot->port = port;
 206         task->lldd_task = slot;
 207
 208         slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool,
 209                                              GFP_ATOMIC,
 210                                              &slot->status_buffer_dma);
 211         if (!slot->status_buffer) {
 212                 rc = -ENOMEM;
 213                 goto err_out_slot_buf;
 214         }
 215         memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ);
 216
 217         slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool,
 218                                              GFP_ATOMIC,
 219                                              &slot->command_table_dma);
 220         if (!slot->command_table) {
 221                 rc = -ENOMEM;
 222                 goto err_out_status_buf;
 223         }
 224         memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ);
 225         memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
 226
 227         switch (task->task_proto) {
 228         case SAS_PROTOCOL_SMP:
 229                 rc = hisi_sas_task_prep_smp(hisi_hba, slot);
 230                 break;
 231         case SAS_PROTOCOL_SSP:
 232                 rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf);
 233                 break;
 234         case SAS_PROTOCOL_SATA:
 235         case SAS_PROTOCOL_STP:
 236         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 237         default:
 238                 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
 239                         task->task_proto);
 240                 rc = -EINVAL;
 241                 break;
 242         }
 243
 244         if (rc) {
 245                 dev_err(dev, "task prep: rc = 0x%x\n", rc);
 246                 if (slot->sge_page)
 247                         goto err_out_sge;
 248                 goto err_out_command_table;
 249         }
 250
 251         list_add_tail(&slot->entry, &port->list);
 252         spin_lock(&task->task_state_lock);
 253         task->task_state_flags |= SAS_TASK_AT_INITIATOR;
 254         spin_unlock(&task->task_state_lock);
 255
 256         hisi_hba->slot_prep = slot;
 257
 258         sas_dev->running_req++;
 259         ++(*pass);
 260
 261         return 0;
 262
 263 err_out_sge:
 264         dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page,
 265                 slot->sge_page_dma);
 266 err_out_command_table:
 267         dma_pool_free(hisi_hba->command_table_pool, slot->command_table,
 268                 slot->command_table_dma);
 269 err_out_status_buf:
 270         dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer,
 271                 slot->status_buffer_dma);
 272 err_out_slot_buf:
 273         /* Nothing to be done */
 274 err_out_tag:
 275         hisi_sas_slot_index_free(hisi_hba, slot_idx);
 276 err_out:
 277         dev_err(dev, "task prep: failed[%d]!\n", rc);
 278         if (!sas_protocol_ata(task->task_proto))
 279                 if (n_elem)
 280                         dma_unmap_sg(dev, task->scatter, n_elem,
 281                                      task->data_dir);
 282 prep_out:
 283         return rc;
 284 }
 285
 286 static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
 287                               int is_tmf, struct hisi_sas_tmf_task *tmf)
 288 {
 289         u32 rc;
 290         u32 pass = 0;
 291         unsigned long flags;
 292         struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
 293         struct device *dev = &hisi_hba->pdev->dev;
 294
 295         /* protect task_prep and start_delivery sequence */
 296         spin_lock_irqsave(&hisi_hba->lock, flags);
 297         rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass);
 298         if (rc)
 299                 dev_err(dev, "task exec: failed[%d]!\n", rc);
 300
 301         if (likely(pass))
 302                 hisi_hba->hw->start_delivery(hisi_hba);
 303         spin_unlock_irqrestore(&hisi_hba->lock, flags);
 304
 305         return rc;
 306 }
 307
 308 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
 309 {
 310         struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
 311         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 312         struct sas_ha_struct *sas_ha;
 313
 314         if (!phy->phy_attached)
 315                 return;
 316
 317         sas_ha = &hisi_hba->sha;
 318         sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
 319
 320         if (sas_phy->phy) {
 321                 struct sas_phy *sphy = sas_phy->phy;
 322
 323                 sphy->negotiated_linkrate = sas_phy->linkrate;
 324                 sphy->minimum_linkrate = phy->minimum_linkrate;
 325                 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
 326                 sphy->maximum_linkrate = phy->maximum_linkrate;
 327         }
 328
 329         if (phy->phy_type & PORT_TYPE_SAS) {
 330                 struct sas_identify_frame *id;
 331
 332                 id = (struct sas_identify_frame *)phy->frame_rcvd;
 333                 id->dev_type = phy->identify.device_type;
 334                 id->initiator_bits = SAS_PROTOCOL_ALL;
 335                 id->target_bits = phy->identify.target_port_protocols;
 336         } else if (phy->phy_type & PORT_TYPE_SATA) {
 337                 /*Nothing*/
 338         }
 339
 340         sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
 341         sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
 342 }
 343
 344 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
 345 {
 346         struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
 347         struct hisi_sas_device *sas_dev = NULL;
 348         int i;
 349
 350         spin_lock(&hisi_hba->lock);
 351         for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
 352                 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
 353                         hisi_hba->devices[i].device_id = i;
 354                         sas_dev = &hisi_hba->devices[i];
 355                         sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
 356                         sas_dev->dev_type = device->dev_type;
 357                         sas_dev->hisi_hba = hisi_hba;
 358                         sas_dev->sas_device = device;
 359                         break;
 360                 }
 361         }
 362         spin_unlock(&hisi_hba->lock);
 363
 364         return sas_dev;
 365 }
 366
 367 static int hisi_sas_dev_found(struct domain_device *device)
 368 {
 369         struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
 370         struct domain_device *parent_dev = device->parent;
 371         struct hisi_sas_device *sas_dev;
 372         struct device *dev = &hisi_hba->pdev->dev;
 373
 374         sas_dev = hisi_sas_alloc_dev(device);
 375         if (!sas_dev) {
 376                 dev_err(dev, "fail alloc dev: max support %d devices\n",
 377                         HISI_SAS_MAX_DEVICES);
 378                 return -EINVAL;
 379         }
 380
 381         device->lldd_dev = sas_dev;
 382         hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
 383
 384         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
 385                 int phy_no;
 386                 u8 phy_num = parent_dev->ex_dev.num_phys;
 387                 struct ex_phy *phy;
 388
 389                 for (phy_no = 0; phy_no < phy_num; phy_no++) {
 390                         phy = &parent_dev->ex_dev.ex_phy[phy_no];
 391                         if (SAS_ADDR(phy->attached_sas_addr) ==
 392                                 SAS_ADDR(device->sas_addr)) {
 393                                 sas_dev->attached_phy = phy_no;
 394                                 break;
 395                         }
 396                 }
 397
 398                 if (phy_no == phy_num) {
 399                         dev_info(dev, "dev found: no attached "
 400                                  "dev:%016llx at ex:%016llx\n",
 401                                  SAS_ADDR(device->sas_addr),
 402                                  SAS_ADDR(parent_dev->sas_addr));
 403                         return -EINVAL;
 404                 }
 405         }
 406
 407         return 0;
 408 }
 409
 410 static void hisi_sas_scan_start(struct Scsi_Host *shost)
 411 {
 412         struct hisi_hba *hisi_hba = shost_priv(shost);
 413         int i;
 414
 415         for (i = 0; i < hisi_hba->n_phy; ++i)
 416                 hisi_sas_bytes_dmaed(hisi_hba, i);
 417
 418         hisi_hba->scan_finished = 1;
 419 }
 420
 421 static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
 422 {
 423         struct hisi_hba *hisi_hba = shost_priv(shost);
 424         struct sas_ha_struct *sha = &hisi_hba->sha;
 425
 426         if (hisi_hba->scan_finished == 0)
 427                 return 0;
 428
 429         sas_drain_work(sha);
 430         return 1;
 431 }
 432
 433 static void hisi_sas_phyup_work(struct work_struct *work)
 434 {
 435         struct hisi_sas_phy *phy =
 436                 container_of(work, struct hisi_sas_phy, phyup_ws);
 437         struct hisi_hba *hisi_hba = phy->hisi_hba;
 438         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 439         int phy_no = sas_phy->id;
 440
 441         hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
 442         hisi_sas_bytes_dmaed(hisi_hba, phy_no);
 443 }
 444
 445 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
 446 {
 447         struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
 448         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 449
 450         phy->hisi_hba = hisi_hba;
 451         phy->port = NULL;
 452         init_timer(&phy->timer);
 453         sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
 454         sas_phy->class = SAS;
 455         sas_phy->iproto = SAS_PROTOCOL_ALL;
 456         sas_phy->tproto = 0;
 457         sas_phy->type = PHY_TYPE_PHYSICAL;
 458         sas_phy->role = PHY_ROLE_INITIATOR;
 459         sas_phy->oob_mode = OOB_NOT_CONNECTED;
 460         sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
 461         sas_phy->id = phy_no;
 462         sas_phy->sas_addr = &hisi_hba->sas_addr[0];
 463         sas_phy->frame_rcvd = &phy->frame_rcvd[0];
 464         sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
 465         sas_phy->lldd_phy = phy;
 466
 467         INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
 468 }
 469
 470 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
 471 {
 472         struct sas_ha_struct *sas_ha = sas_phy->ha;
 473         struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
 474         struct hisi_sas_phy *phy = sas_phy->lldd_phy;
 475         struct asd_sas_port *sas_port = sas_phy->port;
 476         struct hisi_sas_port *port = &hisi_hba->port[sas_phy->id];
 477         unsigned long flags;
 478
 479         if (!sas_port)
 480                 return;
 481
 482         spin_lock_irqsave(&hisi_hba->lock, flags);
 483         port->port_attached = 1;
 484         port->id = phy->port_id;
 485         phy->port = port;
 486         sas_port->lldd_port = port;
 487         spin_unlock_irqrestore(&hisi_hba->lock, flags);
 488 }
 489
 490 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no,
 491                                      struct domain_device *device)
 492 {
 493         struct hisi_sas_phy *phy;
 494         struct hisi_sas_port *port;
 495         struct hisi_sas_slot *slot, *slot2;
 496         struct device *dev = &hisi_hba->pdev->dev;
 497
 498         phy = &hisi_hba->phy[phy_no];
 499         port = phy->port;
 500         if (!port)
 501                 return;
 502
 503         list_for_each_entry_safe(slot, slot2, &port->list, entry) {
 504                 struct sas_task *task;
 505
 506                 task = slot->task;
 507                 if (device && task->dev != device)
 508                         continue;
 509
 510                 dev_info(dev, "Release slot [%d:%d], task [%p]:\n",
 511                          slot->dlvry_queue, slot->dlvry_queue_slot, task);
 512                 hisi_hba->hw->slot_complete(hisi_hba, slot, 1);
 513         }
 514 }
 515
 516 static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy)
 517 {
 518         struct domain_device *device;
 519         struct hisi_sas_phy *phy = sas_phy->lldd_phy;
 520         struct asd_sas_port *sas_port = sas_phy->port;
 521
 522         list_for_each_entry(device, &sas_port->dev_list, dev_list_node)
 523                 hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device);
 524 }
 525
 526 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
 527                         struct domain_device *device)
 528 {
 529         struct asd_sas_port *port = device->port;
 530         struct asd_sas_phy *sas_phy;
 531
 532         list_for_each_entry(sas_phy, &port->phy_list, port_phy_el)
 533                 hisi_sas_do_release_task(hisi_hba, sas_phy->id, device);
 534 }
 535
 536 static void hisi_sas_dev_gone(struct domain_device *device)
 537 {
 538         struct hisi_sas_device *sas_dev = device->lldd_dev;
 539         struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
 540         struct device *dev = &hisi_hba->pdev->dev;
 541         u64 dev_id = sas_dev->device_id;
 542
 543         dev_info(dev, "found dev[%lld:%x] is gone\n",
 544                  sas_dev->device_id, sas_dev->dev_type);
 545
 546         hisi_hba->hw->free_device(hisi_hba, sas_dev);
 547         device->lldd_dev = NULL;
 548         memset(sas_dev, 0, sizeof(*sas_dev));
 549         sas_dev->device_id = dev_id;
 550         sas_dev->dev_type = SAS_PHY_UNUSED;
 551         sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
 552 }
 553
 554 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
 555 {
 556         return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
 557 }
 558
 559 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
 560                                 void *funcdata)
 561 {
 562         struct sas_ha_struct *sas_ha = sas_phy->ha;
 563         struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
 564         int phy_no = sas_phy->id;
 565
 566         switch (func) {
 567         case PHY_FUNC_HARD_RESET:
 568                 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
 569                 break;
 570
 571         case PHY_FUNC_LINK_RESET:
 572                 hisi_hba->hw->phy_enable(hisi_hba, phy_no);
 573                 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
 574                 break;
 575
 576         case PHY_FUNC_DISABLE:
 577                 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
 578                 break;
 579
 580         case PHY_FUNC_SET_LINK_RATE:
 581         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 582         default:
 583                 return -EOPNOTSUPP;
 584         }
 585         return 0;
 586 }
 587
 588 static void hisi_sas_task_done(struct sas_task *task)
 589 {
 590         if (!del_timer(&task->slow_task->timer))
 591                 return;
 592         complete(&task->slow_task->completion);
 593 }
 594
 595 static void hisi_sas_tmf_timedout(unsigned long data)
 596 {
 597         struct sas_task *task = (struct sas_task *)data;
 598
 599         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 600         complete(&task->slow_task->completion);
 601 }
 602
 603 #define TASK_TIMEOUT 20
 604 #define TASK_RETRY 3
 605 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
 606                                            void *parameter, u32 para_len,
 607                                            struct hisi_sas_tmf_task *tmf)
 608 {
 609         struct hisi_sas_device *sas_dev = device->lldd_dev;
 610         struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
 611         struct device *dev = &hisi_hba->pdev->dev;
 612         struct sas_task *task;
 613         int res, retry;
 614
 615         for (retry = 0; retry < TASK_RETRY; retry++) {
 616                 task = sas_alloc_slow_task(GFP_KERNEL);
 617                 if (!task)
 618                         return -ENOMEM;
 619
 620                 task->dev = device;
 621                 task->task_proto = device->tproto;
 622
 623                 memcpy(&task->ssp_task, parameter, para_len);
 624                 task->task_done = hisi_sas_task_done;
 625
 626                 task->slow_task->timer.data = (unsigned long) task;
 627                 task->slow_task->timer.function = hisi_sas_tmf_timedout;
 628                 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ;
 629                 add_timer(&task->slow_task->timer);
 630
 631                 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
 632
 633                 if (res) {
 634                         del_timer(&task->slow_task->timer);
 635                         dev_err(dev, "abort tmf: executing internal task failed: %d\n",
 636                                 res);
 637                         goto ex_err;
 638                 }
 639
 640                 wait_for_completion(&task->slow_task->completion);
 641                 res = TMF_RESP_FUNC_FAILED;
 642                 /* Even TMF timed out, return direct. */
 643                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 644                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 645                                 dev_err(dev, "abort tmf: TMF task[%d] timeout\n",
 646                                         tmf->tag_of_task_to_be_managed);
 647                                 if (task->lldd_task) {
 648                                         struct hisi_sas_slot *slot =
 649                                                 task->lldd_task;
 650
 651                                         hisi_sas_slot_task_free(hisi_hba,
 652                                                                 task, slot);
 653                                 }
 654
 655                                 goto ex_err;
 656                         }
 657                 }
 658
 659                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 660                     task->task_status.stat == SAM_STAT_GOOD) {
 661                         res = TMF_RESP_FUNC_COMPLETE;
 662                         break;
 663                 }
 664
 665                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 666                       task->task_status.stat == SAS_DATA_UNDERRUN) {
 667                         /* no error, but return the number of bytes of
 668                          * underrun
 669                          */
 670                         dev_warn(dev, "abort tmf: task to dev %016llx "
 671                                  "resp: 0x%x sts 0x%x underrun\n",
 672                                  SAS_ADDR(device->sas_addr),
 673                                  task->task_status.resp,
 674                                  task->task_status.stat);
 675                         res = task->task_status.residual;
 676                         break;
 677                 }
 678
 679                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 680                         task->task_status.stat == SAS_DATA_OVERRUN) {
 681                         dev_warn(dev, "abort tmf: blocked task error\n");
 682                         res = -EMSGSIZE;
 683                         break;
 684                 }
 685
 686                 dev_warn(dev, "abort tmf: task to dev "
 687                          "%016llx resp: 0x%x status 0x%x\n",
 688                          SAS_ADDR(device->sas_addr), task->task_status.resp,
 689                          task->task_status.stat);
 690                 sas_free_task(task);
 691                 task = NULL;
 692         }
 693 ex_err:
 694         WARN_ON(retry == TASK_RETRY);
 695         sas_free_task(task);
 696         return res;
 697 }
 698
 699 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
 700                                 u8 *lun, struct hisi_sas_tmf_task *tmf)
 701 {
 702         struct sas_ssp_task ssp_task;
 703
 704         if (!(device->tproto & SAS_PROTOCOL_SSP))
 705                 return TMF_RESP_FUNC_ESUPP;
 706
 707         memcpy(ssp_task.LUN, lun, 8);
 708
 709         return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
 710                                 sizeof(ssp_task), tmf);
 711 }
 712
 713 static int hisi_sas_abort_task(struct sas_task *task)
 714 {
 715         struct scsi_lun lun;
 716         struct hisi_sas_tmf_task tmf_task;
 717         struct domain_device *device = task->dev;
 718         struct hisi_sas_device *sas_dev = device->lldd_dev;
 719         struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
 720         struct device *dev = &hisi_hba->pdev->dev;
 721         int rc = TMF_RESP_FUNC_FAILED;
 722         unsigned long flags;
 723
 724         if (!sas_dev) {
 725                 dev_warn(dev, "Device has been removed\n");
 726                 return TMF_RESP_FUNC_FAILED;
 727         }
 728
 729         spin_lock_irqsave(&task->task_state_lock, flags);
 730         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
 731                 spin_unlock_irqrestore(&task->task_state_lock, flags);
 732                 rc = TMF_RESP_FUNC_COMPLETE;
 733                 goto out;
 734         }
 735
 736         spin_unlock_irqrestore(&task->task_state_lock, flags);
 737         sas_dev->dev_status = HISI_SAS_DEV_EH;
 738         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
 739                 struct scsi_cmnd *cmnd = task->uldd_task;
 740                 struct hisi_sas_slot *slot = task->lldd_task;
 741                 u32 tag = slot->idx;
 742
 743                 int_to_scsilun(cmnd->device->lun, &lun);
 744                 tmf_task.tmf = TMF_ABORT_TASK;
 745                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
 746
 747                 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
 748                                                   &tmf_task);
 749
 750                 /* if successful, clear the task and callback forwards.*/
 751                 if (rc == TMF_RESP_FUNC_COMPLETE) {
 752                         if (task->lldd_task) {
 753                                 struct hisi_sas_slot *slot;
 754
 755                                 slot = &hisi_hba->slot_info
 756                                         [tmf_task.tag_of_task_to_be_managed];
 757                                 spin_lock_irqsave(&hisi_hba->lock, flags);
 758                                 hisi_hba->hw->slot_complete(hisi_hba, slot, 1);
 759                                 spin_unlock_irqrestore(&hisi_hba->lock, flags);
 760                         }
 761                 }
 762
 763         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
 764                 task->task_proto & SAS_PROTOCOL_STP) {
 765                 if (task->dev->dev_type == SAS_SATA_DEV) {
 766                         struct hisi_slot_info *slot = task->lldd_task;
 767
 768                         dev_notice(dev, "abort task: hba=%p task=%p slot=%p\n",
 769                                    hisi_hba, task, slot);
 770                         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 771                         rc = TMF_RESP_FUNC_COMPLETE;
 772                         goto out;
 773                 }
 774
 775         }
 776
 777 out:
 778         if (rc != TMF_RESP_FUNC_COMPLETE)
 779                 dev_notice(dev, "abort task: rc=%d\n", rc);
 780         return rc;
 781 }
 782
 783 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
 784 {
 785         struct hisi_sas_tmf_task tmf_task;
 786         int rc = TMF_RESP_FUNC_FAILED;
 787
 788         tmf_task.tmf = TMF_ABORT_TASK_SET;
 789         rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
 790
 791         return rc;
 792 }
 793
 794 static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
 795 {
 796         int rc = TMF_RESP_FUNC_FAILED;
 797         struct hisi_sas_tmf_task tmf_task;
 798
 799         tmf_task.tmf = TMF_CLEAR_ACA;
 800         rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
 801
 802         return rc;
 803 }
 804
 805 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
 806 {
 807         struct sas_phy *phy = sas_get_local_phy(device);
 808         int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
 809                         (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
 810         rc = sas_phy_reset(phy, reset_type);
 811         sas_put_local_phy(phy);
 812         msleep(2000);
 813         return rc;
 814 }
 815
 816 static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
 817 {
 818         struct hisi_sas_device *sas_dev = device->lldd_dev;
 819         struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
 820         unsigned long flags;
 821         int rc = TMF_RESP_FUNC_FAILED;
 822
 823         if (sas_dev->dev_status != HISI_SAS_DEV_EH)
 824                 return TMF_RESP_FUNC_FAILED;
 825         sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
 826
 827         rc = hisi_sas_debug_I_T_nexus_reset(device);
 828
 829         spin_lock_irqsave(&hisi_hba->lock, flags);
 830         hisi_sas_release_task(hisi_hba, device);
 831         spin_unlock_irqrestore(&hisi_hba->lock, flags);
 832
 833         return 0;
 834 }
 835
 836 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
 837 {
 838         struct hisi_sas_tmf_task tmf_task;
 839         struct hisi_sas_device *sas_dev = device->lldd_dev;
 840         struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
 841         struct device *dev = &hisi_hba->pdev->dev;
 842         unsigned long flags;
 843         int rc = TMF_RESP_FUNC_FAILED;
 844
 845         tmf_task.tmf = TMF_LU_RESET;
 846         sas_dev->dev_status = HISI_SAS_DEV_EH;
 847         rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
 848         if (rc == TMF_RESP_FUNC_COMPLETE) {
 849                 spin_lock_irqsave(&hisi_hba->lock, flags);
 850                 hisi_sas_release_task(hisi_hba, device);
 851                 spin_unlock_irqrestore(&hisi_hba->lock, flags);
 852         }
 853
 854         /* If failed, fall-through I_T_Nexus reset */
 855         dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n",
 856                 sas_dev->device_id, rc);
 857         return rc;
 858 }
 859
 860 static int hisi_sas_query_task(struct sas_task *task)
 861 {
 862         struct scsi_lun lun;
 863         struct hisi_sas_tmf_task tmf_task;
 864         int rc = TMF_RESP_FUNC_FAILED;
 865
 866         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
 867                 struct scsi_cmnd *cmnd = task->uldd_task;
 868                 struct domain_device *device = task->dev;
 869                 struct hisi_sas_slot *slot = task->lldd_task;
 870                 u32 tag = slot->idx;
 871
 872                 int_to_scsilun(cmnd->device->lun, &lun);
 873                 tmf_task.tmf = TMF_QUERY_TASK;
 874                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
 875
 876                 rc = hisi_sas_debug_issue_ssp_tmf(device,
 877                                                   lun.scsi_lun,
 878                                                   &tmf_task);
 879                 switch (rc) {
 880                 /* The task is still in Lun, release it then */
 881                 case TMF_RESP_FUNC_SUCC:
 882                 /* The task is not in Lun or failed, reset the phy */
 883                 case TMF_RESP_FUNC_FAILED:
 884                 case TMF_RESP_FUNC_COMPLETE:
 885                         break;
 886                 }
 887         }
 888         return rc;
 889 }
 890
 891 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
 892 {
 893         hisi_sas_port_notify_formed(sas_phy);
 894 }
 895
 896 static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy)
 897 {
 898         hisi_sas_port_notify_deformed(sas_phy);
 899 }
 900
 901 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
 902 {
 903         phy->phy_attached = 0;
 904         phy->phy_type = 0;
 905         phy->port = NULL;
 906 }
 907
 908 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
 909 {
 910         struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
 911         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 912         struct sas_ha_struct *sas_ha = &hisi_hba->sha;
 913
 914         if (rdy) {
 915                 /* Phy down but ready */
 916                 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
 917                 hisi_sas_port_notify_formed(sas_phy);
 918         } else {
 919                 struct hisi_sas_port *port  = phy->port;
 920
 921                 /* Phy down and not ready */
 922                 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
 923                 sas_phy_disconnected(sas_phy);
 924
 925                 if (port) {
 926                         if (phy->phy_type & PORT_TYPE_SAS) {
 927                                 int port_id = port->id;
 928
 929                                 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
 930                                                                        port_id))
 931                                         port->port_attached = 0;
 932                         } else if (phy->phy_type & PORT_TYPE_SATA)
 933                                 port->port_attached = 0;
 934                 }
 935                 hisi_sas_phy_disconnected(phy);
 936         }
 937 }
 938 EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
 939
 940 static struct scsi_transport_template *hisi_sas_stt;
 941
 942 static struct scsi_host_template hisi_sas_sht = {
 943         .module                 = THIS_MODULE,
 944         .name                   = DRV_NAME,
 945         .queuecommand           = sas_queuecommand,
 946         .target_alloc           = sas_target_alloc,
 947         .slave_configure        = sas_slave_configure,
 948         .scan_finished          = hisi_sas_scan_finished,
 949         .scan_start             = hisi_sas_scan_start,
 950         .change_queue_depth     = sas_change_queue_depth,
 951         .bios_param             = sas_bios_param,
 952         .can_queue              = 1,
 953         .this_id                = -1,
 954         .sg_tablesize           = SG_ALL,
 955         .max_sectors            = SCSI_DEFAULT_MAX_SECTORS,
 956         .use_clustering         = ENABLE_CLUSTERING,
 957         .eh_device_reset_handler = sas_eh_device_reset_handler,
 958         .eh_bus_reset_handler   = sas_eh_bus_reset_handler,
 959         .target_destroy         = sas_target_destroy,
 960         .ioctl                  = sas_ioctl,
 961 };
 962
 963 static struct sas_domain_function_template hisi_sas_transport_ops = {
 964         .lldd_dev_found         = hisi_sas_dev_found,
 965         .lldd_dev_gone          = hisi_sas_dev_gone,
 966         .lldd_execute_task      = hisi_sas_queue_command,
 967         .lldd_control_phy       = hisi_sas_control_phy,
 968         .lldd_abort_task        = hisi_sas_abort_task,
 969         .lldd_abort_task_set    = hisi_sas_abort_task_set,
 970         .lldd_clear_aca         = hisi_sas_clear_aca,
 971         .lldd_I_T_nexus_reset   = hisi_sas_I_T_nexus_reset,
 972         .lldd_lu_reset          = hisi_sas_lu_reset,
 973         .lldd_query_task        = hisi_sas_query_task,
 974         .lldd_port_formed       = hisi_sas_port_formed,
 975         .lldd_port_deformed     = hisi_sas_port_deformed,
 976 };
 977
 978 static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
 979 {
 980         int i, s;
 981         struct platform_device *pdev = hisi_hba->pdev;
 982         struct device *dev = &pdev->dev;
 983
 984         spin_lock_init(&hisi_hba->lock);
 985         for (i = 0; i < hisi_hba->n_phy; i++) {
 986                 hisi_sas_phy_init(hisi_hba, i);
 987                 hisi_hba->port[i].port_attached = 0;
 988                 hisi_hba->port[i].id = -1;
 989                 INIT_LIST_HEAD(&hisi_hba->port[i].list);
 990         }
 991
 992         for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
 993                 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
 994                 hisi_hba->devices[i].device_id = i;
 995                 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
 996         }
 997
 998         for (i = 0; i < hisi_hba->queue_count; i++) {
 999                 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1000
1001                 /* Completion queue structure */
1002                 cq->id = i;
1003                 cq->hisi_hba = hisi_hba;
1004
1005                 /* Delivery queue */
1006                 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1007                 hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
1008                                         &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
1009                 if (!hisi_hba->cmd_hdr[i])
1010                         goto err_out;
1011                 memset(hisi_hba->cmd_hdr[i], 0, s);
1012
1013                 /* Completion queue */
1014                 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1015                 hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
1016                                 &hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
1017                 if (!hisi_hba->complete_hdr[i])
1018                         goto err_out;
1019                 memset(hisi_hba->complete_hdr[i], 0, s);
1020         }
1021
1022         s = HISI_SAS_STATUS_BUF_SZ;
1023         hisi_hba->status_buffer_pool = dma_pool_create("status_buffer",
1024                                                        dev, s, 16, 0);
1025         if (!hisi_hba->status_buffer_pool)
1026                 goto err_out;
1027
1028         s = HISI_SAS_COMMAND_TABLE_SZ;
1029         hisi_hba->command_table_pool = dma_pool_create("command_table",
1030                                                        dev, s, 16, 0);
1031         if (!hisi_hba->command_table_pool)
1032                 goto err_out;
1033
1034         s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1035         hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
1036                                             GFP_KERNEL);
1037         if (!hisi_hba->itct)
1038                 goto err_out;
1039
1040         memset(hisi_hba->itct, 0, s);
1041
1042         hisi_hba->slot_info = devm_kcalloc(dev, HISI_SAS_COMMAND_ENTRIES,
1043                                            sizeof(struct hisi_sas_slot),
1044                                            GFP_KERNEL);
1045         if (!hisi_hba->slot_info)
1046                 goto err_out;
1047
1048         s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
1049         hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
1050                                             GFP_KERNEL);
1051         if (!hisi_hba->iost)
1052                 goto err_out;
1053
1054         memset(hisi_hba->iost, 0, s);
1055
1056         s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
1057         hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
1058                                 &hisi_hba->breakpoint_dma, GFP_KERNEL);
1059         if (!hisi_hba->breakpoint)
1060                 goto err_out;
1061
1062         memset(hisi_hba->breakpoint, 0, s);
1063
1064         hisi_hba->slot_index_count = HISI_SAS_COMMAND_ENTRIES;
1065         s = hisi_hba->slot_index_count / sizeof(unsigned long);
1066         hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
1067         if (!hisi_hba->slot_index_tags)
1068                 goto err_out;
1069
1070         hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev,
1071                                 sizeof(struct hisi_sas_sge_page), 16, 0);
1072         if (!hisi_hba->sge_page_pool)
1073                 goto err_out;
1074
1075         s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1076         hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
1077                                 &hisi_hba->initial_fis_dma, GFP_KERNEL);
1078         if (!hisi_hba->initial_fis)
1079                 goto err_out;
1080         memset(hisi_hba->initial_fis, 0, s);
1081
1082         s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
1083         hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
1084                                 &hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
1085         if (!hisi_hba->sata_breakpoint)
1086                 goto err_out;
1087         memset(hisi_hba->sata_breakpoint, 0, s);
1088
1089         hisi_sas_slot_index_init(hisi_hba);
1090
1091         hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
1092         if (!hisi_hba->wq) {
1093                 dev_err(dev, "sas_alloc: failed to create workqueue\n");
1094                 goto err_out;
1095         }
1096
1097         return 0;
1098 err_out:
1099         return -ENOMEM;
1100 }
1101
1102 static void hisi_sas_free(struct hisi_hba *hisi_hba)
1103 {
1104         struct device *dev = &hisi_hba->pdev->dev;
1105         int i, s;
1106
1107         for (i = 0; i < hisi_hba->queue_count; i++) {
1108                 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1109                 if (hisi_hba->cmd_hdr[i])
1110                         dma_free_coherent(dev, s,
1111                                           hisi_hba->cmd_hdr[i],
1112                                           hisi_hba->cmd_hdr_dma[i]);
1113
1114                 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1115                 if (hisi_hba->complete_hdr[i])
1116                         dma_free_coherent(dev, s,
1117                                           hisi_hba->complete_hdr[i],
1118                                           hisi_hba->complete_hdr_dma[i]);
1119         }
1120
1121         dma_pool_destroy(hisi_hba->status_buffer_pool);
1122         dma_pool_destroy(hisi_hba->command_table_pool);
1123         dma_pool_destroy(hisi_hba->sge_page_pool);
1124
1125         s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1126         if (hisi_hba->itct)
1127                 dma_free_coherent(dev, s,
1128                                   hisi_hba->itct, hisi_hba->itct_dma);
1129
1130         s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
1131         if (hisi_hba->iost)
1132                 dma_free_coherent(dev, s,
1133                                   hisi_hba->iost, hisi_hba->iost_dma);
1134
1135         s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
1136         if (hisi_hba->breakpoint)
1137                 dma_free_coherent(dev, s,
1138                                   hisi_hba->breakpoint,
1139                                   hisi_hba->breakpoint_dma);
1140
1141
1142         s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1143         if (hisi_hba->initial_fis)
1144                 dma_free_coherent(dev, s,
1145                                   hisi_hba->initial_fis,
1146                                   hisi_hba->initial_fis_dma);
1147
1148         s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
1149         if (hisi_hba->sata_breakpoint)
1150                 dma_free_coherent(dev, s,
1151                                   hisi_hba->sata_breakpoint,
1152                                   hisi_hba->sata_breakpoint_dma);
1153
1154         if (hisi_hba->wq)
1155                 destroy_workqueue(hisi_hba->wq);
1156 }
1157
1158 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
1159                                               const struct hisi_sas_hw *hw)
1160 {
1161         struct resource *res;
1162         struct Scsi_Host *shost;
1163         struct hisi_hba *hisi_hba;
1164         struct device *dev = &pdev->dev;
1165         struct device_node *np = pdev->dev.of_node;
1166         struct property *sas_addr_prop;
1167
1168         shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
1169         if (!shost)
1170                 goto err_out;
1171         hisi_hba = shost_priv(shost);
1172
1173         hisi_hba->hw = hw;
1174         hisi_hba->pdev = pdev;
1175         hisi_hba->shost = shost;
1176         SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
1177
1178         init_timer(&hisi_hba->timer);
1179
1180         sas_addr_prop = of_find_property(np, "sas-addr", NULL);
1181         if (!sas_addr_prop || (sas_addr_prop->length != SAS_ADDR_SIZE))
1182                 goto err_out;
1183         memcpy(hisi_hba->sas_addr, sas_addr_prop->value, SAS_ADDR_SIZE);
1184
1185         if (of_property_read_u32(np, "ctrl-reset-reg",
1186                                  &hisi_hba->ctrl_reset_reg))
1187                 goto err_out;
1188
1189         if (of_property_read_u32(np, "ctrl-reset-sts-reg",
1190                                  &hisi_hba->ctrl_reset_sts_reg))
1191                 goto err_out;
1192
1193         if (of_property_read_u32(np, "ctrl-clock-ena-reg",
1194                                  &hisi_hba->ctrl_clock_ena_reg))
1195                 goto err_out;
1196
1197         if (of_property_read_u32(np, "phy-count", &hisi_hba->n_phy))
1198                 goto err_out;
1199
1200         if (of_property_read_u32(np, "queue-count", &hisi_hba->queue_count))
1201                 goto err_out;
1202
1203         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1204         hisi_hba->regs = devm_ioremap_resource(dev, res);
1205         if (IS_ERR(hisi_hba->regs))
1206                 goto err_out;
1207
1208         hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(
1209                                 np, "hisilicon,sas-syscon");
1210         if (IS_ERR(hisi_hba->ctrl))
1211                 goto err_out;
1212
1213         if (hisi_sas_alloc(hisi_hba, shost)) {
1214                 hisi_sas_free(hisi_hba);
1215                 goto err_out;
1216         }
1217
1218         return shost;
1219 err_out:
1220         dev_err(dev, "shost alloc failed\n");
1221         return NULL;
1222 }
1223
1224 static void hisi_sas_init_add(struct hisi_hba *hisi_hba)
1225 {
1226         int i;
1227
1228         for (i = 0; i < hisi_hba->n_phy; i++)
1229                 memcpy(&hisi_hba->phy[i].dev_sas_addr,
1230                        hisi_hba->sas_addr,
1231                        SAS_ADDR_SIZE);
1232 }
1233
1234 int hisi_sas_probe(struct platform_device *pdev,
1235                          const struct hisi_sas_hw *hw)
1236 {
1237         struct Scsi_Host *shost;
1238         struct hisi_hba *hisi_hba;
1239         struct device *dev = &pdev->dev;
1240         struct asd_sas_phy **arr_phy;
1241         struct asd_sas_port **arr_port;
1242         struct sas_ha_struct *sha;
1243         int rc, phy_nr, port_nr, i;
1244
1245         shost = hisi_sas_shost_alloc(pdev, hw);
1246         if (!shost) {
1247                 rc = -ENOMEM;
1248                 goto err_out_ha;
1249         }
1250
1251         sha = SHOST_TO_SAS_HA(shost);
1252         hisi_hba = shost_priv(shost);
1253         platform_set_drvdata(pdev, sha);
1254
1255         if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
1256             dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
1257                 dev_err(dev, "No usable DMA addressing method\n");
1258                 rc = -EIO;
1259                 goto err_out_ha;
1260         }
1261
1262         phy_nr = port_nr = hisi_hba->n_phy;
1263
1264         arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
1265         arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
1266         if (!arr_phy || !arr_port)
1267                 return -ENOMEM;
1268
1269         sha->sas_phy = arr_phy;
1270         sha->sas_port = arr_port;
1271         sha->core.shost = shost;
1272         sha->lldd_ha = hisi_hba;
1273
1274         shost->transportt = hisi_sas_stt;
1275         shost->max_id = HISI_SAS_MAX_DEVICES;
1276         shost->max_lun = ~0;
1277         shost->max_channel = 1;
1278         shost->max_cmd_len = 16;
1279         shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
1280         shost->can_queue = HISI_SAS_COMMAND_ENTRIES;
1281         shost->cmd_per_lun = HISI_SAS_COMMAND_ENTRIES;
1282
1283         sha->sas_ha_name = DRV_NAME;
1284         sha->dev = &hisi_hba->pdev->dev;
1285         sha->lldd_module = THIS_MODULE;
1286         sha->sas_addr = &hisi_hba->sas_addr[0];
1287         sha->num_phys = hisi_hba->n_phy;
1288         sha->core.shost = hisi_hba->shost;
1289
1290         for (i = 0; i < hisi_hba->n_phy; i++) {
1291                 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
1292                 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
1293         }
1294
1295         hisi_sas_init_add(hisi_hba);
1296
1297         rc = hisi_hba->hw->hw_init(hisi_hba);
1298         if (rc)
1299                 goto err_out_ha;
1300
1301         rc = scsi_add_host(shost, &pdev->dev);
1302         if (rc)
1303                 goto err_out_ha;
1304
1305         rc = sas_register_ha(sha);
1306         if (rc)
1307                 goto err_out_register_ha;
1308
1309         scsi_scan_host(shost);
1310
1311         return 0;
1312
1313 err_out_register_ha:
1314         scsi_remove_host(shost);
1315 err_out_ha:
1316         kfree(shost);
1317         return rc;
1318 }
1319 EXPORT_SYMBOL_GPL(hisi_sas_probe);
1320
1321 int hisi_sas_remove(struct platform_device *pdev)
1322 {
1323         struct sas_ha_struct *sha = platform_get_drvdata(pdev);
1324         struct hisi_hba *hisi_hba = sha->lldd_ha;
1325
1326         scsi_remove_host(sha->core.shost);
1327         sas_unregister_ha(sha);
1328         sas_remove_host(sha->core.shost);
1329
1330         hisi_sas_free(hisi_hba);
1331         return 0;
1332 }
1333 EXPORT_SYMBOL_GPL(hisi_sas_remove);
1334
1335 static __init int hisi_sas_init(void)
1336 {
1337         pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
1338
1339         hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
1340         if (!hisi_sas_stt)
1341                 return -ENOMEM;
1342
1343         return 0;
1344 }
1345
1346 static __exit void hisi_sas_exit(void)
1347 {
1348         sas_release_transport(hisi_sas_stt);
1349 }
1350
1351 module_init(hisi_sas_init);
1352 module_exit(hisi_sas_exit);
1353
1354 MODULE_VERSION(DRV_VERSION);
1355 MODULE_LICENSE("GPL");
1356 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
1357 MODULE_DESCRIPTION("HISILICON SAS controller driver");
1358 MODULE_ALIAS("platform:" DRV_NAME);