John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 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 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 15 | #define DEV_IS_GONE(dev) \ |
| 16 | ((!dev) || (dev->dev_type == SAS_PHY_UNUSED)) |
| 17 | |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 18 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, |
| 19 | u8 *lun, struct hisi_sas_tmf_task *tmf); |
| 20 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 21 | static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) |
| 22 | { |
| 23 | return device->port->ha->lldd_ha; |
| 24 | } |
| 25 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 26 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
| 27 | { |
| 28 | void *bitmap = hisi_hba->slot_index_tags; |
| 29 | |
| 30 | clear_bit(slot_idx, bitmap); |
| 31 | } |
| 32 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 33 | static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) |
| 34 | { |
| 35 | hisi_sas_slot_index_clear(hisi_hba, slot_idx); |
| 36 | } |
| 37 | |
| 38 | static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) |
| 39 | { |
| 40 | void *bitmap = hisi_hba->slot_index_tags; |
| 41 | |
| 42 | set_bit(slot_idx, bitmap); |
| 43 | } |
| 44 | |
| 45 | static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx) |
| 46 | { |
| 47 | unsigned int index; |
| 48 | void *bitmap = hisi_hba->slot_index_tags; |
| 49 | |
| 50 | index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count); |
| 51 | if (index >= hisi_hba->slot_index_count) |
| 52 | return -SAS_QUEUE_FULL; |
| 53 | hisi_sas_slot_index_set(hisi_hba, index); |
| 54 | *slot_idx = index; |
| 55 | return 0; |
| 56 | } |
| 57 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 58 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
| 59 | { |
| 60 | int i; |
| 61 | |
| 62 | for (i = 0; i < hisi_hba->slot_index_count; ++i) |
| 63 | hisi_sas_slot_index_clear(hisi_hba, i); |
| 64 | } |
John Garry | 27a3f22 | 2015-11-18 00:50:50 +0800 | [diff] [blame] | 65 | |
| 66 | void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, |
| 67 | struct hisi_sas_slot *slot) |
| 68 | { |
| 69 | struct device *dev = &hisi_hba->pdev->dev; |
| 70 | |
| 71 | if (!slot->task) |
| 72 | return; |
| 73 | |
| 74 | if (!sas_protocol_ata(task->task_proto)) |
| 75 | if (slot->n_elem) |
| 76 | dma_unmap_sg(dev, task->scatter, slot->n_elem, |
| 77 | task->data_dir); |
| 78 | |
| 79 | if (slot->command_table) |
| 80 | dma_pool_free(hisi_hba->command_table_pool, |
| 81 | slot->command_table, slot->command_table_dma); |
| 82 | |
| 83 | if (slot->status_buffer) |
| 84 | dma_pool_free(hisi_hba->status_buffer_pool, |
| 85 | slot->status_buffer, slot->status_buffer_dma); |
| 86 | |
| 87 | if (slot->sge_page) |
| 88 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, |
| 89 | slot->sge_page_dma); |
| 90 | |
| 91 | list_del_init(&slot->entry); |
| 92 | task->lldd_task = NULL; |
| 93 | slot->task = NULL; |
| 94 | slot->port = NULL; |
| 95 | hisi_sas_slot_index_free(hisi_hba, slot->idx); |
| 96 | memset(slot, 0, sizeof(*slot)); |
| 97 | } |
| 98 | EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); |
| 99 | |
John Garry | 66ee999 | 2015-11-18 00:50:54 +0800 | [diff] [blame] | 100 | static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, |
| 101 | struct hisi_sas_slot *slot) |
| 102 | { |
| 103 | return hisi_hba->hw->prep_smp(hisi_hba, slot); |
| 104 | } |
| 105 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 106 | static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, |
| 107 | struct hisi_sas_slot *slot, int is_tmf, |
| 108 | struct hisi_sas_tmf_task *tmf) |
| 109 | { |
| 110 | return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf); |
| 111 | } |
| 112 | |
John Garry | 6f2ff1a | 2016-01-26 02:47:20 +0800 | [diff] [blame] | 113 | static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, |
| 114 | struct hisi_sas_slot *slot) |
| 115 | { |
| 116 | return hisi_hba->hw->prep_stp(hisi_hba, slot); |
| 117 | } |
| 118 | |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 119 | /* |
| 120 | * This function will issue an abort TMF regardless of whether the |
| 121 | * task is in the sdev or not. Then it will do the task complete |
| 122 | * cleanup and callbacks. |
| 123 | */ |
| 124 | static void hisi_sas_slot_abort(struct work_struct *work) |
| 125 | { |
| 126 | struct hisi_sas_slot *abort_slot = |
| 127 | container_of(work, struct hisi_sas_slot, abort_slot); |
| 128 | struct sas_task *task = abort_slot->task; |
| 129 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); |
| 130 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 131 | struct hisi_sas_tmf_task tmf_task; |
| 132 | struct domain_device *device = task->dev; |
| 133 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 134 | struct scsi_lun lun; |
| 135 | struct device *dev = &hisi_hba->pdev->dev; |
| 136 | int tag = abort_slot->idx; |
| 137 | |
| 138 | if (!(task->task_proto & SAS_PROTOCOL_SSP)) { |
| 139 | dev_err(dev, "cannot abort slot for non-ssp task\n"); |
| 140 | goto out; |
| 141 | } |
| 142 | |
| 143 | int_to_scsilun(cmnd->device->lun, &lun); |
| 144 | tmf_task.tmf = TMF_ABORT_TASK; |
| 145 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); |
| 146 | |
| 147 | hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task); |
| 148 | out: |
| 149 | /* Do cleanup for this task */ |
| 150 | hisi_sas_slot_task_free(hisi_hba, task, abort_slot); |
| 151 | if (task->task_done) |
| 152 | task->task_done(task); |
| 153 | if (sas_dev && sas_dev->running_req) |
| 154 | sas_dev->running_req--; |
| 155 | } |
| 156 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 157 | static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba, |
| 158 | int is_tmf, struct hisi_sas_tmf_task *tmf, |
| 159 | int *pass) |
| 160 | { |
| 161 | struct domain_device *device = task->dev; |
| 162 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 163 | struct hisi_sas_port *port; |
| 164 | struct hisi_sas_slot *slot; |
| 165 | struct hisi_sas_cmd_hdr *cmd_hdr_base; |
| 166 | struct device *dev = &hisi_hba->pdev->dev; |
| 167 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; |
| 168 | |
| 169 | if (!device->port) { |
| 170 | struct task_status_struct *ts = &task->task_status; |
| 171 | |
| 172 | ts->resp = SAS_TASK_UNDELIVERED; |
| 173 | ts->stat = SAS_PHY_DOWN; |
| 174 | /* |
| 175 | * libsas will use dev->port, should |
| 176 | * not call task_done for sata |
| 177 | */ |
| 178 | if (device->dev_type != SAS_SATA_DEV) |
| 179 | task->task_done(task); |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | if (DEV_IS_GONE(sas_dev)) { |
| 184 | if (sas_dev) |
| 185 | dev_info(dev, "task prep: device %llu not ready\n", |
| 186 | sas_dev->device_id); |
| 187 | else |
| 188 | dev_info(dev, "task prep: device %016llx not ready\n", |
| 189 | SAS_ADDR(device->sas_addr)); |
| 190 | |
| 191 | rc = SAS_PHY_DOWN; |
| 192 | return rc; |
| 193 | } |
| 194 | port = device->port->lldd_port; |
| 195 | if (port && !port->port_attached && !tmf) { |
| 196 | if (sas_protocol_ata(task->task_proto)) { |
| 197 | struct task_status_struct *ts = &task->task_status; |
| 198 | |
| 199 | dev_info(dev, |
| 200 | "task prep: SATA/STP port%d not attach device\n", |
| 201 | device->port->id); |
| 202 | ts->resp = SAS_TASK_COMPLETE; |
| 203 | ts->stat = SAS_PHY_DOWN; |
| 204 | task->task_done(task); |
| 205 | } else { |
| 206 | struct task_status_struct *ts = &task->task_status; |
| 207 | |
| 208 | dev_info(dev, |
| 209 | "task prep: SAS port%d does not attach device\n", |
| 210 | device->port->id); |
| 211 | ts->resp = SAS_TASK_UNDELIVERED; |
| 212 | ts->stat = SAS_PHY_DOWN; |
| 213 | task->task_done(task); |
| 214 | } |
| 215 | return 0; |
| 216 | } |
| 217 | |
| 218 | if (!sas_protocol_ata(task->task_proto)) { |
| 219 | if (task->num_scatter) { |
| 220 | n_elem = dma_map_sg(dev, task->scatter, |
| 221 | task->num_scatter, task->data_dir); |
| 222 | if (!n_elem) { |
| 223 | rc = -ENOMEM; |
| 224 | goto prep_out; |
| 225 | } |
| 226 | } |
| 227 | } else |
| 228 | n_elem = task->num_scatter; |
| 229 | |
John Garry | 685b6d6 | 2016-04-15 21:36:36 +0800 | [diff] [blame] | 230 | if (hisi_hba->hw->slot_index_alloc) |
| 231 | rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx, |
| 232 | device); |
| 233 | else |
| 234 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 235 | if (rc) |
| 236 | goto err_out; |
| 237 | rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue, |
| 238 | &dlvry_queue_slot); |
| 239 | if (rc) |
| 240 | goto err_out_tag; |
| 241 | |
| 242 | slot = &hisi_hba->slot_info[slot_idx]; |
| 243 | memset(slot, 0, sizeof(struct hisi_sas_slot)); |
| 244 | |
| 245 | slot->idx = slot_idx; |
| 246 | slot->n_elem = n_elem; |
| 247 | slot->dlvry_queue = dlvry_queue; |
| 248 | slot->dlvry_queue_slot = dlvry_queue_slot; |
| 249 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; |
| 250 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; |
| 251 | slot->task = task; |
| 252 | slot->port = port; |
| 253 | task->lldd_task = slot; |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 254 | INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 255 | |
| 256 | slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool, |
| 257 | GFP_ATOMIC, |
| 258 | &slot->status_buffer_dma); |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 259 | if (!slot->status_buffer) { |
| 260 | rc = -ENOMEM; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 261 | goto err_out_slot_buf; |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 262 | } |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 263 | memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ); |
| 264 | |
| 265 | slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool, |
| 266 | GFP_ATOMIC, |
| 267 | &slot->command_table_dma); |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 268 | if (!slot->command_table) { |
| 269 | rc = -ENOMEM; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 270 | goto err_out_status_buf; |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 271 | } |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 272 | memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ); |
| 273 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); |
| 274 | |
| 275 | switch (task->task_proto) { |
John Garry | 66ee999 | 2015-11-18 00:50:54 +0800 | [diff] [blame] | 276 | case SAS_PROTOCOL_SMP: |
| 277 | rc = hisi_sas_task_prep_smp(hisi_hba, slot); |
| 278 | break; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 279 | case SAS_PROTOCOL_SSP: |
| 280 | rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf); |
| 281 | break; |
| 282 | case SAS_PROTOCOL_SATA: |
| 283 | case SAS_PROTOCOL_STP: |
| 284 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: |
John Garry | 6f2ff1a | 2016-01-26 02:47:20 +0800 | [diff] [blame] | 285 | rc = hisi_sas_task_prep_ata(hisi_hba, slot); |
| 286 | break; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 287 | default: |
| 288 | dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", |
| 289 | task->task_proto); |
| 290 | rc = -EINVAL; |
| 291 | break; |
| 292 | } |
| 293 | |
| 294 | if (rc) { |
| 295 | dev_err(dev, "task prep: rc = 0x%x\n", rc); |
| 296 | if (slot->sge_page) |
| 297 | goto err_out_sge; |
| 298 | goto err_out_command_table; |
| 299 | } |
| 300 | |
| 301 | list_add_tail(&slot->entry, &port->list); |
| 302 | spin_lock(&task->task_state_lock); |
| 303 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; |
| 304 | spin_unlock(&task->task_state_lock); |
| 305 | |
| 306 | hisi_hba->slot_prep = slot; |
| 307 | |
| 308 | sas_dev->running_req++; |
| 309 | ++(*pass); |
| 310 | |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 311 | return 0; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 312 | |
| 313 | err_out_sge: |
| 314 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, |
| 315 | slot->sge_page_dma); |
| 316 | err_out_command_table: |
| 317 | dma_pool_free(hisi_hba->command_table_pool, slot->command_table, |
| 318 | slot->command_table_dma); |
| 319 | err_out_status_buf: |
| 320 | dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer, |
| 321 | slot->status_buffer_dma); |
| 322 | err_out_slot_buf: |
| 323 | /* Nothing to be done */ |
| 324 | err_out_tag: |
| 325 | hisi_sas_slot_index_free(hisi_hba, slot_idx); |
| 326 | err_out: |
| 327 | dev_err(dev, "task prep: failed[%d]!\n", rc); |
| 328 | if (!sas_protocol_ata(task->task_proto)) |
| 329 | if (n_elem) |
| 330 | dma_unmap_sg(dev, task->scatter, n_elem, |
| 331 | task->data_dir); |
| 332 | prep_out: |
| 333 | return rc; |
| 334 | } |
| 335 | |
| 336 | static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, |
| 337 | int is_tmf, struct hisi_sas_tmf_task *tmf) |
| 338 | { |
| 339 | u32 rc; |
| 340 | u32 pass = 0; |
| 341 | unsigned long flags; |
| 342 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); |
| 343 | struct device *dev = &hisi_hba->pdev->dev; |
| 344 | |
| 345 | /* protect task_prep and start_delivery sequence */ |
| 346 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 347 | rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass); |
| 348 | if (rc) |
| 349 | dev_err(dev, "task exec: failed[%d]!\n", rc); |
| 350 | |
| 351 | if (likely(pass)) |
| 352 | hisi_hba->hw->start_delivery(hisi_hba); |
| 353 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 354 | |
| 355 | return rc; |
| 356 | } |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 357 | |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 358 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
| 359 | { |
| 360 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 361 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 362 | struct sas_ha_struct *sas_ha; |
| 363 | |
| 364 | if (!phy->phy_attached) |
| 365 | return; |
| 366 | |
| 367 | sas_ha = &hisi_hba->sha; |
| 368 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); |
| 369 | |
| 370 | if (sas_phy->phy) { |
| 371 | struct sas_phy *sphy = sas_phy->phy; |
| 372 | |
| 373 | sphy->negotiated_linkrate = sas_phy->linkrate; |
| 374 | sphy->minimum_linkrate = phy->minimum_linkrate; |
| 375 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; |
| 376 | sphy->maximum_linkrate = phy->maximum_linkrate; |
| 377 | } |
| 378 | |
| 379 | if (phy->phy_type & PORT_TYPE_SAS) { |
| 380 | struct sas_identify_frame *id; |
| 381 | |
| 382 | id = (struct sas_identify_frame *)phy->frame_rcvd; |
| 383 | id->dev_type = phy->identify.device_type; |
| 384 | id->initiator_bits = SAS_PROTOCOL_ALL; |
| 385 | id->target_bits = phy->identify.target_port_protocols; |
| 386 | } else if (phy->phy_type & PORT_TYPE_SATA) { |
| 387 | /*Nothing*/ |
| 388 | } |
| 389 | |
| 390 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; |
| 391 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); |
| 392 | } |
| 393 | |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 394 | static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) |
| 395 | { |
| 396 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 397 | struct hisi_sas_device *sas_dev = NULL; |
| 398 | int i; |
| 399 | |
| 400 | spin_lock(&hisi_hba->lock); |
| 401 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
| 402 | if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { |
| 403 | hisi_hba->devices[i].device_id = i; |
| 404 | sas_dev = &hisi_hba->devices[i]; |
| 405 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; |
| 406 | sas_dev->dev_type = device->dev_type; |
| 407 | sas_dev->hisi_hba = hisi_hba; |
| 408 | sas_dev->sas_device = device; |
| 409 | break; |
| 410 | } |
| 411 | } |
| 412 | spin_unlock(&hisi_hba->lock); |
| 413 | |
| 414 | return sas_dev; |
| 415 | } |
| 416 | |
| 417 | static int hisi_sas_dev_found(struct domain_device *device) |
| 418 | { |
| 419 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 420 | struct domain_device *parent_dev = device->parent; |
| 421 | struct hisi_sas_device *sas_dev; |
| 422 | struct device *dev = &hisi_hba->pdev->dev; |
| 423 | |
John Garry | 685b6d6 | 2016-04-15 21:36:36 +0800 | [diff] [blame] | 424 | if (hisi_hba->hw->alloc_dev) |
| 425 | sas_dev = hisi_hba->hw->alloc_dev(device); |
| 426 | else |
| 427 | sas_dev = hisi_sas_alloc_dev(device); |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 428 | if (!sas_dev) { |
| 429 | dev_err(dev, "fail alloc dev: max support %d devices\n", |
| 430 | HISI_SAS_MAX_DEVICES); |
| 431 | return -EINVAL; |
| 432 | } |
| 433 | |
| 434 | device->lldd_dev = sas_dev; |
| 435 | hisi_hba->hw->setup_itct(hisi_hba, sas_dev); |
| 436 | |
| 437 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { |
| 438 | int phy_no; |
| 439 | u8 phy_num = parent_dev->ex_dev.num_phys; |
| 440 | struct ex_phy *phy; |
| 441 | |
| 442 | for (phy_no = 0; phy_no < phy_num; phy_no++) { |
| 443 | phy = &parent_dev->ex_dev.ex_phy[phy_no]; |
| 444 | if (SAS_ADDR(phy->attached_sas_addr) == |
| 445 | SAS_ADDR(device->sas_addr)) { |
| 446 | sas_dev->attached_phy = phy_no; |
| 447 | break; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | if (phy_no == phy_num) { |
| 452 | dev_info(dev, "dev found: no attached " |
| 453 | "dev:%016llx at ex:%016llx\n", |
| 454 | SAS_ADDR(device->sas_addr), |
| 455 | SAS_ADDR(parent_dev->sas_addr)); |
| 456 | return -EINVAL; |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | return 0; |
| 461 | } |
| 462 | |
John Garry | 31eec8a | 2016-02-25 17:42:14 +0800 | [diff] [blame] | 463 | static int hisi_sas_slave_configure(struct scsi_device *sdev) |
| 464 | { |
| 465 | struct domain_device *dev = sdev_to_domain_dev(sdev); |
| 466 | int ret = sas_slave_configure(sdev); |
| 467 | |
| 468 | if (ret) |
| 469 | return ret; |
| 470 | if (!dev_is_sata(dev)) |
| 471 | sas_change_queue_depth(sdev, 64); |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 476 | static void hisi_sas_scan_start(struct Scsi_Host *shost) |
| 477 | { |
| 478 | struct hisi_hba *hisi_hba = shost_priv(shost); |
| 479 | int i; |
| 480 | |
| 481 | for (i = 0; i < hisi_hba->n_phy; ++i) |
| 482 | hisi_sas_bytes_dmaed(hisi_hba, i); |
| 483 | |
| 484 | hisi_hba->scan_finished = 1; |
| 485 | } |
| 486 | |
| 487 | static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) |
| 488 | { |
| 489 | struct hisi_hba *hisi_hba = shost_priv(shost); |
| 490 | struct sas_ha_struct *sha = &hisi_hba->sha; |
| 491 | |
| 492 | if (hisi_hba->scan_finished == 0) |
| 493 | return 0; |
| 494 | |
| 495 | sas_drain_work(sha); |
| 496 | return 1; |
| 497 | } |
| 498 | |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 499 | static void hisi_sas_phyup_work(struct work_struct *work) |
| 500 | { |
| 501 | struct hisi_sas_phy *phy = |
| 502 | container_of(work, struct hisi_sas_phy, phyup_ws); |
| 503 | struct hisi_hba *hisi_hba = phy->hisi_hba; |
| 504 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 505 | int phy_no = sas_phy->id; |
| 506 | |
| 507 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ |
| 508 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); |
| 509 | } |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 510 | |
| 511 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) |
| 512 | { |
| 513 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 514 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 515 | |
| 516 | phy->hisi_hba = hisi_hba; |
| 517 | phy->port = NULL; |
| 518 | init_timer(&phy->timer); |
| 519 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; |
| 520 | sas_phy->class = SAS; |
| 521 | sas_phy->iproto = SAS_PROTOCOL_ALL; |
| 522 | sas_phy->tproto = 0; |
| 523 | sas_phy->type = PHY_TYPE_PHYSICAL; |
| 524 | sas_phy->role = PHY_ROLE_INITIATOR; |
| 525 | sas_phy->oob_mode = OOB_NOT_CONNECTED; |
| 526 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; |
| 527 | sas_phy->id = phy_no; |
| 528 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; |
| 529 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; |
| 530 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; |
| 531 | sas_phy->lldd_phy = phy; |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 532 | |
| 533 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 534 | } |
| 535 | |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 536 | static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) |
| 537 | { |
| 538 | struct sas_ha_struct *sas_ha = sas_phy->ha; |
| 539 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; |
| 540 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; |
| 541 | struct asd_sas_port *sas_port = sas_phy->port; |
| 542 | struct hisi_sas_port *port = &hisi_hba->port[sas_phy->id]; |
| 543 | unsigned long flags; |
| 544 | |
| 545 | if (!sas_port) |
| 546 | return; |
| 547 | |
| 548 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 549 | port->port_attached = 1; |
| 550 | port->id = phy->port_id; |
| 551 | phy->port = port; |
| 552 | sas_port->lldd_port = port; |
| 553 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 554 | } |
| 555 | |
| 556 | static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no, |
| 557 | struct domain_device *device) |
| 558 | { |
| 559 | struct hisi_sas_phy *phy; |
| 560 | struct hisi_sas_port *port; |
| 561 | struct hisi_sas_slot *slot, *slot2; |
| 562 | struct device *dev = &hisi_hba->pdev->dev; |
| 563 | |
| 564 | phy = &hisi_hba->phy[phy_no]; |
| 565 | port = phy->port; |
| 566 | if (!port) |
| 567 | return; |
| 568 | |
| 569 | list_for_each_entry_safe(slot, slot2, &port->list, entry) { |
| 570 | struct sas_task *task; |
| 571 | |
| 572 | task = slot->task; |
| 573 | if (device && task->dev != device) |
| 574 | continue; |
| 575 | |
| 576 | dev_info(dev, "Release slot [%d:%d], task [%p]:\n", |
| 577 | slot->dlvry_queue, slot->dlvry_queue_slot, task); |
| 578 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy) |
| 583 | { |
| 584 | struct domain_device *device; |
| 585 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; |
| 586 | struct asd_sas_port *sas_port = sas_phy->port; |
| 587 | |
| 588 | list_for_each_entry(device, &sas_port->dev_list, dev_list_node) |
| 589 | hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device); |
| 590 | } |
| 591 | |
| 592 | static void hisi_sas_release_task(struct hisi_hba *hisi_hba, |
| 593 | struct domain_device *device) |
| 594 | { |
| 595 | struct asd_sas_port *port = device->port; |
| 596 | struct asd_sas_phy *sas_phy; |
| 597 | |
| 598 | list_for_each_entry(sas_phy, &port->phy_list, port_phy_el) |
| 599 | hisi_sas_do_release_task(hisi_hba, sas_phy->id, device); |
| 600 | } |
| 601 | |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 602 | static void hisi_sas_dev_gone(struct domain_device *device) |
| 603 | { |
| 604 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 605 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 606 | struct device *dev = &hisi_hba->pdev->dev; |
| 607 | u64 dev_id = sas_dev->device_id; |
| 608 | |
| 609 | dev_info(dev, "found dev[%lld:%x] is gone\n", |
| 610 | sas_dev->device_id, sas_dev->dev_type); |
| 611 | |
| 612 | hisi_hba->hw->free_device(hisi_hba, sas_dev); |
| 613 | device->lldd_dev = NULL; |
| 614 | memset(sas_dev, 0, sizeof(*sas_dev)); |
| 615 | sas_dev->device_id = dev_id; |
| 616 | sas_dev->dev_type = SAS_PHY_UNUSED; |
| 617 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; |
| 618 | } |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 619 | |
| 620 | static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) |
| 621 | { |
| 622 | return hisi_sas_task_exec(task, gfp_flags, 0, NULL); |
| 623 | } |
| 624 | |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 625 | static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, |
| 626 | void *funcdata) |
| 627 | { |
| 628 | struct sas_ha_struct *sas_ha = sas_phy->ha; |
| 629 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; |
| 630 | int phy_no = sas_phy->id; |
| 631 | |
| 632 | switch (func) { |
| 633 | case PHY_FUNC_HARD_RESET: |
| 634 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); |
| 635 | break; |
| 636 | |
| 637 | case PHY_FUNC_LINK_RESET: |
| 638 | hisi_hba->hw->phy_enable(hisi_hba, phy_no); |
| 639 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); |
| 640 | break; |
| 641 | |
| 642 | case PHY_FUNC_DISABLE: |
| 643 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); |
| 644 | break; |
| 645 | |
| 646 | case PHY_FUNC_SET_LINK_RATE: |
| 647 | case PHY_FUNC_RELEASE_SPINUP_HOLD: |
| 648 | default: |
| 649 | return -EOPNOTSUPP; |
| 650 | } |
| 651 | return 0; |
| 652 | } |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 653 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 654 | static void hisi_sas_task_done(struct sas_task *task) |
| 655 | { |
| 656 | if (!del_timer(&task->slow_task->timer)) |
| 657 | return; |
| 658 | complete(&task->slow_task->completion); |
| 659 | } |
| 660 | |
| 661 | static void hisi_sas_tmf_timedout(unsigned long data) |
| 662 | { |
| 663 | struct sas_task *task = (struct sas_task *)data; |
| 664 | |
| 665 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
| 666 | complete(&task->slow_task->completion); |
| 667 | } |
| 668 | |
| 669 | #define TASK_TIMEOUT 20 |
| 670 | #define TASK_RETRY 3 |
| 671 | static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, |
| 672 | void *parameter, u32 para_len, |
| 673 | struct hisi_sas_tmf_task *tmf) |
| 674 | { |
| 675 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 676 | struct hisi_hba *hisi_hba = sas_dev->hisi_hba; |
| 677 | struct device *dev = &hisi_hba->pdev->dev; |
| 678 | struct sas_task *task; |
| 679 | int res, retry; |
| 680 | |
| 681 | for (retry = 0; retry < TASK_RETRY; retry++) { |
| 682 | task = sas_alloc_slow_task(GFP_KERNEL); |
| 683 | if (!task) |
| 684 | return -ENOMEM; |
| 685 | |
| 686 | task->dev = device; |
| 687 | task->task_proto = device->tproto; |
| 688 | |
| 689 | memcpy(&task->ssp_task, parameter, para_len); |
| 690 | task->task_done = hisi_sas_task_done; |
| 691 | |
| 692 | task->slow_task->timer.data = (unsigned long) task; |
| 693 | task->slow_task->timer.function = hisi_sas_tmf_timedout; |
| 694 | task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; |
| 695 | add_timer(&task->slow_task->timer); |
| 696 | |
| 697 | res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); |
| 698 | |
| 699 | if (res) { |
| 700 | del_timer(&task->slow_task->timer); |
| 701 | dev_err(dev, "abort tmf: executing internal task failed: %d\n", |
| 702 | res); |
| 703 | goto ex_err; |
| 704 | } |
| 705 | |
| 706 | wait_for_completion(&task->slow_task->completion); |
| 707 | res = TMF_RESP_FUNC_FAILED; |
| 708 | /* Even TMF timed out, return direct. */ |
| 709 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { |
| 710 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { |
| 711 | dev_err(dev, "abort tmf: TMF task[%d] timeout\n", |
| 712 | tmf->tag_of_task_to_be_managed); |
| 713 | if (task->lldd_task) { |
| 714 | struct hisi_sas_slot *slot = |
| 715 | task->lldd_task; |
| 716 | |
| 717 | hisi_sas_slot_task_free(hisi_hba, |
| 718 | task, slot); |
| 719 | } |
| 720 | |
| 721 | goto ex_err; |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
John Garry | 1af1b80 | 2016-02-25 17:42:10 +0800 | [diff] [blame] | 726 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 727 | res = TMF_RESP_FUNC_COMPLETE; |
| 728 | break; |
| 729 | } |
| 730 | |
| 731 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 732 | task->task_status.stat == SAS_DATA_UNDERRUN) { |
| 733 | /* no error, but return the number of bytes of |
| 734 | * underrun |
| 735 | */ |
| 736 | dev_warn(dev, "abort tmf: task to dev %016llx " |
| 737 | "resp: 0x%x sts 0x%x underrun\n", |
| 738 | SAS_ADDR(device->sas_addr), |
| 739 | task->task_status.resp, |
| 740 | task->task_status.stat); |
| 741 | res = task->task_status.residual; |
| 742 | break; |
| 743 | } |
| 744 | |
| 745 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 746 | task->task_status.stat == SAS_DATA_OVERRUN) { |
| 747 | dev_warn(dev, "abort tmf: blocked task error\n"); |
| 748 | res = -EMSGSIZE; |
| 749 | break; |
| 750 | } |
| 751 | |
| 752 | dev_warn(dev, "abort tmf: task to dev " |
| 753 | "%016llx resp: 0x%x status 0x%x\n", |
| 754 | SAS_ADDR(device->sas_addr), task->task_status.resp, |
| 755 | task->task_status.stat); |
| 756 | sas_free_task(task); |
| 757 | task = NULL; |
| 758 | } |
| 759 | ex_err: |
| 760 | WARN_ON(retry == TASK_RETRY); |
| 761 | sas_free_task(task); |
| 762 | return res; |
| 763 | } |
| 764 | |
| 765 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, |
| 766 | u8 *lun, struct hisi_sas_tmf_task *tmf) |
| 767 | { |
| 768 | struct sas_ssp_task ssp_task; |
| 769 | |
| 770 | if (!(device->tproto & SAS_PROTOCOL_SSP)) |
| 771 | return TMF_RESP_FUNC_ESUPP; |
| 772 | |
| 773 | memcpy(ssp_task.LUN, lun, 8); |
| 774 | |
| 775 | return hisi_sas_exec_internal_tmf_task(device, &ssp_task, |
| 776 | sizeof(ssp_task), tmf); |
| 777 | } |
| 778 | |
| 779 | static int hisi_sas_abort_task(struct sas_task *task) |
| 780 | { |
| 781 | struct scsi_lun lun; |
| 782 | struct hisi_sas_tmf_task tmf_task; |
| 783 | struct domain_device *device = task->dev; |
| 784 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 785 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); |
| 786 | struct device *dev = &hisi_hba->pdev->dev; |
| 787 | int rc = TMF_RESP_FUNC_FAILED; |
| 788 | unsigned long flags; |
| 789 | |
| 790 | if (!sas_dev) { |
| 791 | dev_warn(dev, "Device has been removed\n"); |
| 792 | return TMF_RESP_FUNC_FAILED; |
| 793 | } |
| 794 | |
| 795 | spin_lock_irqsave(&task->task_state_lock, flags); |
| 796 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
| 797 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
| 798 | rc = TMF_RESP_FUNC_COMPLETE; |
| 799 | goto out; |
| 800 | } |
| 801 | |
| 802 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
| 803 | sas_dev->dev_status = HISI_SAS_DEV_EH; |
| 804 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { |
| 805 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 806 | struct hisi_sas_slot *slot = task->lldd_task; |
| 807 | u32 tag = slot->idx; |
| 808 | |
| 809 | int_to_scsilun(cmnd->device->lun, &lun); |
| 810 | tmf_task.tmf = TMF_ABORT_TASK; |
| 811 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); |
| 812 | |
| 813 | rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, |
| 814 | &tmf_task); |
| 815 | |
| 816 | /* if successful, clear the task and callback forwards.*/ |
| 817 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
| 818 | if (task->lldd_task) { |
| 819 | struct hisi_sas_slot *slot; |
| 820 | |
| 821 | slot = &hisi_hba->slot_info |
| 822 | [tmf_task.tag_of_task_to_be_managed]; |
| 823 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 824 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); |
| 825 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | } else if (task->task_proto & SAS_PROTOCOL_SATA || |
| 830 | task->task_proto & SAS_PROTOCOL_STP) { |
| 831 | if (task->dev->dev_type == SAS_SATA_DEV) { |
| 832 | struct hisi_slot_info *slot = task->lldd_task; |
| 833 | |
| 834 | dev_notice(dev, "abort task: hba=%p task=%p slot=%p\n", |
| 835 | hisi_hba, task, slot); |
| 836 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
| 837 | rc = TMF_RESP_FUNC_COMPLETE; |
| 838 | goto out; |
| 839 | } |
| 840 | |
| 841 | } |
| 842 | |
| 843 | out: |
| 844 | if (rc != TMF_RESP_FUNC_COMPLETE) |
| 845 | dev_notice(dev, "abort task: rc=%d\n", rc); |
| 846 | return rc; |
| 847 | } |
| 848 | |
| 849 | static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) |
| 850 | { |
| 851 | struct hisi_sas_tmf_task tmf_task; |
| 852 | int rc = TMF_RESP_FUNC_FAILED; |
| 853 | |
| 854 | tmf_task.tmf = TMF_ABORT_TASK_SET; |
| 855 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); |
| 856 | |
| 857 | return rc; |
| 858 | } |
| 859 | |
| 860 | static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) |
| 861 | { |
| 862 | int rc = TMF_RESP_FUNC_FAILED; |
| 863 | struct hisi_sas_tmf_task tmf_task; |
| 864 | |
| 865 | tmf_task.tmf = TMF_CLEAR_ACA; |
| 866 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); |
| 867 | |
| 868 | return rc; |
| 869 | } |
| 870 | |
| 871 | static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) |
| 872 | { |
| 873 | struct sas_phy *phy = sas_get_local_phy(device); |
| 874 | int rc, reset_type = (device->dev_type == SAS_SATA_DEV || |
| 875 | (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; |
| 876 | rc = sas_phy_reset(phy, reset_type); |
| 877 | sas_put_local_phy(phy); |
| 878 | msleep(2000); |
| 879 | return rc; |
| 880 | } |
| 881 | |
| 882 | static int hisi_sas_I_T_nexus_reset(struct domain_device *device) |
| 883 | { |
| 884 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 885 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 886 | unsigned long flags; |
| 887 | int rc = TMF_RESP_FUNC_FAILED; |
| 888 | |
| 889 | if (sas_dev->dev_status != HISI_SAS_DEV_EH) |
| 890 | return TMF_RESP_FUNC_FAILED; |
| 891 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; |
| 892 | |
| 893 | rc = hisi_sas_debug_I_T_nexus_reset(device); |
| 894 | |
| 895 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 896 | hisi_sas_release_task(hisi_hba, device); |
| 897 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 898 | |
| 899 | return 0; |
| 900 | } |
| 901 | |
| 902 | static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) |
| 903 | { |
| 904 | struct hisi_sas_tmf_task tmf_task; |
| 905 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 906 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 907 | struct device *dev = &hisi_hba->pdev->dev; |
| 908 | unsigned long flags; |
| 909 | int rc = TMF_RESP_FUNC_FAILED; |
| 910 | |
| 911 | tmf_task.tmf = TMF_LU_RESET; |
| 912 | sas_dev->dev_status = HISI_SAS_DEV_EH; |
| 913 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); |
| 914 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
| 915 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 916 | hisi_sas_release_task(hisi_hba, device); |
| 917 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 918 | } |
| 919 | |
| 920 | /* If failed, fall-through I_T_Nexus reset */ |
| 921 | dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n", |
| 922 | sas_dev->device_id, rc); |
| 923 | return rc; |
| 924 | } |
| 925 | |
| 926 | static int hisi_sas_query_task(struct sas_task *task) |
| 927 | { |
| 928 | struct scsi_lun lun; |
| 929 | struct hisi_sas_tmf_task tmf_task; |
| 930 | int rc = TMF_RESP_FUNC_FAILED; |
| 931 | |
| 932 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { |
| 933 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 934 | struct domain_device *device = task->dev; |
| 935 | struct hisi_sas_slot *slot = task->lldd_task; |
| 936 | u32 tag = slot->idx; |
| 937 | |
| 938 | int_to_scsilun(cmnd->device->lun, &lun); |
| 939 | tmf_task.tmf = TMF_QUERY_TASK; |
| 940 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); |
| 941 | |
| 942 | rc = hisi_sas_debug_issue_ssp_tmf(device, |
| 943 | lun.scsi_lun, |
| 944 | &tmf_task); |
| 945 | switch (rc) { |
| 946 | /* The task is still in Lun, release it then */ |
| 947 | case TMF_RESP_FUNC_SUCC: |
| 948 | /* The task is not in Lun or failed, reset the phy */ |
| 949 | case TMF_RESP_FUNC_FAILED: |
| 950 | case TMF_RESP_FUNC_COMPLETE: |
| 951 | break; |
| 952 | } |
| 953 | } |
| 954 | return rc; |
| 955 | } |
| 956 | |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 957 | static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) |
| 958 | { |
| 959 | hisi_sas_port_notify_formed(sas_phy); |
| 960 | } |
| 961 | |
| 962 | static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy) |
| 963 | { |
| 964 | hisi_sas_port_notify_deformed(sas_phy); |
| 965 | } |
| 966 | |
| 967 | static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) |
| 968 | { |
| 969 | phy->phy_attached = 0; |
| 970 | phy->phy_type = 0; |
| 971 | phy->port = NULL; |
| 972 | } |
| 973 | |
| 974 | void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) |
| 975 | { |
| 976 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 977 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 978 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; |
| 979 | |
| 980 | if (rdy) { |
| 981 | /* Phy down but ready */ |
| 982 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); |
| 983 | hisi_sas_port_notify_formed(sas_phy); |
| 984 | } else { |
| 985 | struct hisi_sas_port *port = phy->port; |
| 986 | |
| 987 | /* Phy down and not ready */ |
| 988 | sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); |
| 989 | sas_phy_disconnected(sas_phy); |
| 990 | |
| 991 | if (port) { |
| 992 | if (phy->phy_type & PORT_TYPE_SAS) { |
| 993 | int port_id = port->id; |
| 994 | |
| 995 | if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, |
| 996 | port_id)) |
| 997 | port->port_attached = 0; |
| 998 | } else if (phy->phy_type & PORT_TYPE_SATA) |
| 999 | port->port_attached = 0; |
| 1000 | } |
| 1001 | hisi_sas_phy_disconnected(phy); |
| 1002 | } |
| 1003 | } |
| 1004 | EXPORT_SYMBOL_GPL(hisi_sas_phy_down); |
| 1005 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1006 | static struct scsi_transport_template *hisi_sas_stt; |
| 1007 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1008 | static struct scsi_host_template hisi_sas_sht = { |
| 1009 | .module = THIS_MODULE, |
| 1010 | .name = DRV_NAME, |
| 1011 | .queuecommand = sas_queuecommand, |
| 1012 | .target_alloc = sas_target_alloc, |
John Garry | 31eec8a | 2016-02-25 17:42:14 +0800 | [diff] [blame] | 1013 | .slave_configure = hisi_sas_slave_configure, |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 1014 | .scan_finished = hisi_sas_scan_finished, |
| 1015 | .scan_start = hisi_sas_scan_start, |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1016 | .change_queue_depth = sas_change_queue_depth, |
| 1017 | .bios_param = sas_bios_param, |
| 1018 | .can_queue = 1, |
| 1019 | .this_id = -1, |
| 1020 | .sg_tablesize = SG_ALL, |
| 1021 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, |
| 1022 | .use_clustering = ENABLE_CLUSTERING, |
| 1023 | .eh_device_reset_handler = sas_eh_device_reset_handler, |
| 1024 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, |
| 1025 | .target_destroy = sas_target_destroy, |
| 1026 | .ioctl = sas_ioctl, |
| 1027 | }; |
| 1028 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1029 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 1030 | .lldd_dev_found = hisi_sas_dev_found, |
| 1031 | .lldd_dev_gone = hisi_sas_dev_gone, |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 1032 | .lldd_execute_task = hisi_sas_queue_command, |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 1033 | .lldd_control_phy = hisi_sas_control_phy, |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1034 | .lldd_abort_task = hisi_sas_abort_task, |
| 1035 | .lldd_abort_task_set = hisi_sas_abort_task_set, |
| 1036 | .lldd_clear_aca = hisi_sas_clear_aca, |
| 1037 | .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, |
| 1038 | .lldd_lu_reset = hisi_sas_lu_reset, |
| 1039 | .lldd_query_task = hisi_sas_query_task, |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 1040 | .lldd_port_formed = hisi_sas_port_formed, |
| 1041 | .lldd_port_deformed = hisi_sas_port_deformed, |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1042 | }; |
| 1043 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1044 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
| 1045 | { |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1046 | struct platform_device *pdev = hisi_hba->pdev; |
| 1047 | struct device *dev = &pdev->dev; |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1048 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1049 | |
John Garry | fa42d80 | 2015-11-18 00:50:43 +0800 | [diff] [blame] | 1050 | spin_lock_init(&hisi_hba->lock); |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 1051 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 1052 | hisi_sas_phy_init(hisi_hba, i); |
| 1053 | hisi_hba->port[i].port_attached = 0; |
| 1054 | hisi_hba->port[i].id = -1; |
| 1055 | INIT_LIST_HEAD(&hisi_hba->port[i].list); |
| 1056 | } |
| 1057 | |
John Garry | af740db | 2015-11-18 00:50:41 +0800 | [diff] [blame] | 1058 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
| 1059 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; |
| 1060 | hisi_hba->devices[i].device_id = i; |
| 1061 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; |
| 1062 | } |
| 1063 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1064 | for (i = 0; i < hisi_hba->queue_count; i++) { |
John Garry | 9101a07 | 2015-11-18 00:50:37 +0800 | [diff] [blame] | 1065 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
| 1066 | |
| 1067 | /* Completion queue structure */ |
| 1068 | cq->id = i; |
| 1069 | cq->hisi_hba = hisi_hba; |
| 1070 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1071 | /* Delivery queue */ |
| 1072 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 1073 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, |
| 1074 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); |
| 1075 | if (!hisi_hba->cmd_hdr[i]) |
| 1076 | goto err_out; |
| 1077 | memset(hisi_hba->cmd_hdr[i], 0, s); |
| 1078 | |
| 1079 | /* Completion queue */ |
| 1080 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 1081 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, |
| 1082 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); |
| 1083 | if (!hisi_hba->complete_hdr[i]) |
| 1084 | goto err_out; |
| 1085 | memset(hisi_hba->complete_hdr[i], 0, s); |
| 1086 | } |
| 1087 | |
| 1088 | s = HISI_SAS_STATUS_BUF_SZ; |
| 1089 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", |
| 1090 | dev, s, 16, 0); |
| 1091 | if (!hisi_hba->status_buffer_pool) |
| 1092 | goto err_out; |
| 1093 | |
| 1094 | s = HISI_SAS_COMMAND_TABLE_SZ; |
| 1095 | hisi_hba->command_table_pool = dma_pool_create("command_table", |
| 1096 | dev, s, 16, 0); |
| 1097 | if (!hisi_hba->command_table_pool) |
| 1098 | goto err_out; |
| 1099 | |
| 1100 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); |
| 1101 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, |
| 1102 | GFP_KERNEL); |
| 1103 | if (!hisi_hba->itct) |
| 1104 | goto err_out; |
| 1105 | |
| 1106 | memset(hisi_hba->itct, 0, s); |
| 1107 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1108 | hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1109 | sizeof(struct hisi_sas_slot), |
| 1110 | GFP_KERNEL); |
| 1111 | if (!hisi_hba->slot_info) |
| 1112 | goto err_out; |
| 1113 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1114 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1115 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
| 1116 | GFP_KERNEL); |
| 1117 | if (!hisi_hba->iost) |
| 1118 | goto err_out; |
| 1119 | |
| 1120 | memset(hisi_hba->iost, 0, s); |
| 1121 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1122 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1123 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
| 1124 | &hisi_hba->breakpoint_dma, GFP_KERNEL); |
| 1125 | if (!hisi_hba->breakpoint) |
| 1126 | goto err_out; |
| 1127 | |
| 1128 | memset(hisi_hba->breakpoint, 0, s); |
| 1129 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1130 | hisi_hba->slot_index_count = max_command_entries; |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 1131 | s = hisi_hba->slot_index_count / sizeof(unsigned long); |
| 1132 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); |
| 1133 | if (!hisi_hba->slot_index_tags) |
| 1134 | goto err_out; |
| 1135 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1136 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
| 1137 | sizeof(struct hisi_sas_sge_page), 16, 0); |
| 1138 | if (!hisi_hba->sge_page_pool) |
| 1139 | goto err_out; |
| 1140 | |
| 1141 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; |
| 1142 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, |
| 1143 | &hisi_hba->initial_fis_dma, GFP_KERNEL); |
| 1144 | if (!hisi_hba->initial_fis) |
| 1145 | goto err_out; |
| 1146 | memset(hisi_hba->initial_fis, 0, s); |
| 1147 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1148 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1149 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
| 1150 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); |
| 1151 | if (!hisi_hba->sata_breakpoint) |
| 1152 | goto err_out; |
| 1153 | memset(hisi_hba->sata_breakpoint, 0, s); |
| 1154 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 1155 | hisi_sas_slot_index_init(hisi_hba); |
| 1156 | |
John Garry | 7e9080e | 2015-11-18 00:50:40 +0800 | [diff] [blame] | 1157 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
| 1158 | if (!hisi_hba->wq) { |
| 1159 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); |
| 1160 | goto err_out; |
| 1161 | } |
| 1162 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1163 | return 0; |
| 1164 | err_out: |
| 1165 | return -ENOMEM; |
| 1166 | } |
| 1167 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1168 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
| 1169 | { |
| 1170 | struct device *dev = &hisi_hba->pdev->dev; |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1171 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1172 | |
| 1173 | for (i = 0; i < hisi_hba->queue_count; i++) { |
| 1174 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 1175 | if (hisi_hba->cmd_hdr[i]) |
| 1176 | dma_free_coherent(dev, s, |
| 1177 | hisi_hba->cmd_hdr[i], |
| 1178 | hisi_hba->cmd_hdr_dma[i]); |
| 1179 | |
| 1180 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 1181 | if (hisi_hba->complete_hdr[i]) |
| 1182 | dma_free_coherent(dev, s, |
| 1183 | hisi_hba->complete_hdr[i], |
| 1184 | hisi_hba->complete_hdr_dma[i]); |
| 1185 | } |
| 1186 | |
| 1187 | dma_pool_destroy(hisi_hba->status_buffer_pool); |
| 1188 | dma_pool_destroy(hisi_hba->command_table_pool); |
| 1189 | dma_pool_destroy(hisi_hba->sge_page_pool); |
| 1190 | |
| 1191 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); |
| 1192 | if (hisi_hba->itct) |
| 1193 | dma_free_coherent(dev, s, |
| 1194 | hisi_hba->itct, hisi_hba->itct_dma); |
| 1195 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1196 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1197 | if (hisi_hba->iost) |
| 1198 | dma_free_coherent(dev, s, |
| 1199 | hisi_hba->iost, hisi_hba->iost_dma); |
| 1200 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1201 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1202 | if (hisi_hba->breakpoint) |
| 1203 | dma_free_coherent(dev, s, |
| 1204 | hisi_hba->breakpoint, |
| 1205 | hisi_hba->breakpoint_dma); |
| 1206 | |
| 1207 | |
| 1208 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; |
| 1209 | if (hisi_hba->initial_fis) |
| 1210 | dma_free_coherent(dev, s, |
| 1211 | hisi_hba->initial_fis, |
| 1212 | hisi_hba->initial_fis_dma); |
| 1213 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1214 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1215 | if (hisi_hba->sata_breakpoint) |
| 1216 | dma_free_coherent(dev, s, |
| 1217 | hisi_hba->sata_breakpoint, |
| 1218 | hisi_hba->sata_breakpoint_dma); |
| 1219 | |
John Garry | 7e9080e | 2015-11-18 00:50:40 +0800 | [diff] [blame] | 1220 | if (hisi_hba->wq) |
| 1221 | destroy_workqueue(hisi_hba->wq); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1222 | } |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1223 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1224 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
| 1225 | const struct hisi_sas_hw *hw) |
| 1226 | { |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1227 | struct resource *res; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1228 | struct Scsi_Host *shost; |
| 1229 | struct hisi_hba *hisi_hba; |
| 1230 | struct device *dev = &pdev->dev; |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1231 | struct device_node *np = pdev->dev.of_node; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1232 | |
| 1233 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); |
| 1234 | if (!shost) |
| 1235 | goto err_out; |
| 1236 | hisi_hba = shost_priv(shost); |
| 1237 | |
| 1238 | hisi_hba->hw = hw; |
| 1239 | hisi_hba->pdev = pdev; |
| 1240 | hisi_hba->shost = shost; |
| 1241 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; |
| 1242 | |
John Garry | fa42d80 | 2015-11-18 00:50:43 +0800 | [diff] [blame] | 1243 | init_timer(&hisi_hba->timer); |
| 1244 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1245 | if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, |
| 1246 | SAS_ADDR_SIZE)) |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1247 | goto err_out; |
| 1248 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1249 | if (np) { |
| 1250 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, |
| 1251 | "hisilicon,sas-syscon"); |
| 1252 | if (IS_ERR(hisi_hba->ctrl)) |
| 1253 | goto err_out; |
| 1254 | |
| 1255 | if (device_property_read_u32(dev, "ctrl-reset-reg", |
| 1256 | &hisi_hba->ctrl_reset_reg)) |
| 1257 | goto err_out; |
| 1258 | |
| 1259 | if (device_property_read_u32(dev, "ctrl-reset-sts-reg", |
| 1260 | &hisi_hba->ctrl_reset_sts_reg)) |
| 1261 | goto err_out; |
| 1262 | |
| 1263 | if (device_property_read_u32(dev, "ctrl-clock-ena-reg", |
| 1264 | &hisi_hba->ctrl_clock_ena_reg)) |
| 1265 | goto err_out; |
| 1266 | } |
| 1267 | |
| 1268 | if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1269 | goto err_out; |
| 1270 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1271 | if (device_property_read_u32(dev, "queue-count", |
| 1272 | &hisi_hba->queue_count)) |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1273 | goto err_out; |
| 1274 | |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1275 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1276 | hisi_hba->regs = devm_ioremap_resource(dev, res); |
| 1277 | if (IS_ERR(hisi_hba->regs)) |
| 1278 | goto err_out; |
| 1279 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1280 | if (hisi_sas_alloc(hisi_hba, shost)) { |
| 1281 | hisi_sas_free(hisi_hba); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1282 | goto err_out; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1283 | } |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1284 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1285 | return shost; |
| 1286 | err_out: |
| 1287 | dev_err(dev, "shost alloc failed\n"); |
| 1288 | return NULL; |
| 1289 | } |
| 1290 | |
John Garry | 5d74242 | 2015-11-18 00:50:38 +0800 | [diff] [blame] | 1291 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
| 1292 | { |
| 1293 | int i; |
| 1294 | |
| 1295 | for (i = 0; i < hisi_hba->n_phy; i++) |
| 1296 | memcpy(&hisi_hba->phy[i].dev_sas_addr, |
| 1297 | hisi_hba->sas_addr, |
| 1298 | SAS_ADDR_SIZE); |
| 1299 | } |
| 1300 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1301 | int hisi_sas_probe(struct platform_device *pdev, |
| 1302 | const struct hisi_sas_hw *hw) |
| 1303 | { |
| 1304 | struct Scsi_Host *shost; |
| 1305 | struct hisi_hba *hisi_hba; |
| 1306 | struct device *dev = &pdev->dev; |
| 1307 | struct asd_sas_phy **arr_phy; |
| 1308 | struct asd_sas_port **arr_port; |
| 1309 | struct sas_ha_struct *sha; |
| 1310 | int rc, phy_nr, port_nr, i; |
| 1311 | |
| 1312 | shost = hisi_sas_shost_alloc(pdev, hw); |
| 1313 | if (!shost) { |
| 1314 | rc = -ENOMEM; |
| 1315 | goto err_out_ha; |
| 1316 | } |
| 1317 | |
| 1318 | sha = SHOST_TO_SAS_HA(shost); |
| 1319 | hisi_hba = shost_priv(shost); |
| 1320 | platform_set_drvdata(pdev, sha); |
John Garry | 50cb916 | 2015-11-18 00:50:39 +0800 | [diff] [blame] | 1321 | |
| 1322 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && |
| 1323 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { |
| 1324 | dev_err(dev, "No usable DMA addressing method\n"); |
| 1325 | rc = -EIO; |
| 1326 | goto err_out_ha; |
| 1327 | } |
| 1328 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1329 | phy_nr = port_nr = hisi_hba->n_phy; |
| 1330 | |
| 1331 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); |
| 1332 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); |
| 1333 | if (!arr_phy || !arr_port) |
| 1334 | return -ENOMEM; |
| 1335 | |
| 1336 | sha->sas_phy = arr_phy; |
| 1337 | sha->sas_port = arr_port; |
| 1338 | sha->core.shost = shost; |
| 1339 | sha->lldd_ha = hisi_hba; |
| 1340 | |
| 1341 | shost->transportt = hisi_sas_stt; |
| 1342 | shost->max_id = HISI_SAS_MAX_DEVICES; |
| 1343 | shost->max_lun = ~0; |
| 1344 | shost->max_channel = 1; |
| 1345 | shost->max_cmd_len = 16; |
| 1346 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1347 | shost->can_queue = hisi_hba->hw->max_command_entries; |
| 1348 | shost->cmd_per_lun = hisi_hba->hw->max_command_entries; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1349 | |
| 1350 | sha->sas_ha_name = DRV_NAME; |
| 1351 | sha->dev = &hisi_hba->pdev->dev; |
| 1352 | sha->lldd_module = THIS_MODULE; |
| 1353 | sha->sas_addr = &hisi_hba->sas_addr[0]; |
| 1354 | sha->num_phys = hisi_hba->n_phy; |
| 1355 | sha->core.shost = hisi_hba->shost; |
| 1356 | |
| 1357 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 1358 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; |
| 1359 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; |
| 1360 | } |
| 1361 | |
John Garry | 5d74242 | 2015-11-18 00:50:38 +0800 | [diff] [blame] | 1362 | hisi_sas_init_add(hisi_hba); |
| 1363 | |
John Garry | 8ff1d57 | 2015-11-18 00:50:46 +0800 | [diff] [blame] | 1364 | rc = hisi_hba->hw->hw_init(hisi_hba); |
| 1365 | if (rc) |
| 1366 | goto err_out_ha; |
| 1367 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1368 | rc = scsi_add_host(shost, &pdev->dev); |
| 1369 | if (rc) |
| 1370 | goto err_out_ha; |
| 1371 | |
| 1372 | rc = sas_register_ha(sha); |
| 1373 | if (rc) |
| 1374 | goto err_out_register_ha; |
| 1375 | |
| 1376 | scsi_scan_host(shost); |
| 1377 | |
| 1378 | return 0; |
| 1379 | |
| 1380 | err_out_register_ha: |
| 1381 | scsi_remove_host(shost); |
| 1382 | err_out_ha: |
| 1383 | kfree(shost); |
| 1384 | return rc; |
| 1385 | } |
| 1386 | EXPORT_SYMBOL_GPL(hisi_sas_probe); |
| 1387 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1388 | int hisi_sas_remove(struct platform_device *pdev) |
| 1389 | { |
| 1390 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); |
| 1391 | struct hisi_hba *hisi_hba = sha->lldd_ha; |
| 1392 | |
| 1393 | scsi_remove_host(sha->core.shost); |
| 1394 | sas_unregister_ha(sha); |
| 1395 | sas_remove_host(sha->core.shost); |
| 1396 | |
| 1397 | hisi_sas_free(hisi_hba); |
| 1398 | return 0; |
| 1399 | } |
| 1400 | EXPORT_SYMBOL_GPL(hisi_sas_remove); |
| 1401 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1402 | static __init int hisi_sas_init(void) |
| 1403 | { |
| 1404 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); |
| 1405 | |
| 1406 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); |
| 1407 | if (!hisi_sas_stt) |
| 1408 | return -ENOMEM; |
| 1409 | |
| 1410 | return 0; |
| 1411 | } |
| 1412 | |
| 1413 | static __exit void hisi_sas_exit(void) |
| 1414 | { |
| 1415 | sas_release_transport(hisi_sas_stt); |
| 1416 | } |
| 1417 | |
| 1418 | module_init(hisi_sas_init); |
| 1419 | module_exit(hisi_sas_exit); |
| 1420 | |
| 1421 | MODULE_VERSION(DRV_VERSION); |
| 1422 | MODULE_LICENSE("GPL"); |
| 1423 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); |
| 1424 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); |
| 1425 | MODULE_ALIAS("platform:" DRV_NAME); |