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); |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 20 | static int |
| 21 | hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, |
| 22 | struct domain_device *device, |
| 23 | int abort_flag, int tag); |
Xiang Chen | 7c594f0 | 2017-03-23 01:25:20 +0800 | [diff] [blame] | 24 | static int hisi_sas_softreset_ata_disk(struct domain_device *device); |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 25 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 26 | static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) |
| 27 | { |
| 28 | return device->port->ha->lldd_ha; |
| 29 | } |
| 30 | |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 31 | struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port) |
| 32 | { |
| 33 | return container_of(sas_port, struct hisi_sas_port, sas_port); |
| 34 | } |
| 35 | EXPORT_SYMBOL_GPL(to_hisi_sas_port); |
| 36 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 37 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
| 38 | { |
| 39 | void *bitmap = hisi_hba->slot_index_tags; |
| 40 | |
| 41 | clear_bit(slot_idx, bitmap); |
| 42 | } |
| 43 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 44 | static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) |
| 45 | { |
| 46 | hisi_sas_slot_index_clear(hisi_hba, slot_idx); |
| 47 | } |
| 48 | |
| 49 | static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) |
| 50 | { |
| 51 | void *bitmap = hisi_hba->slot_index_tags; |
| 52 | |
| 53 | set_bit(slot_idx, bitmap); |
| 54 | } |
| 55 | |
| 56 | static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx) |
| 57 | { |
| 58 | unsigned int index; |
| 59 | void *bitmap = hisi_hba->slot_index_tags; |
| 60 | |
| 61 | index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count); |
| 62 | if (index >= hisi_hba->slot_index_count) |
| 63 | return -SAS_QUEUE_FULL; |
| 64 | hisi_sas_slot_index_set(hisi_hba, index); |
| 65 | *slot_idx = index; |
| 66 | return 0; |
| 67 | } |
| 68 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 69 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
| 70 | { |
| 71 | int i; |
| 72 | |
| 73 | for (i = 0; i < hisi_hba->slot_index_count; ++i) |
| 74 | hisi_sas_slot_index_clear(hisi_hba, i); |
| 75 | } |
John Garry | 27a3f22 | 2015-11-18 00:50:50 +0800 | [diff] [blame] | 76 | |
| 77 | void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, |
| 78 | struct hisi_sas_slot *slot) |
| 79 | { |
| 80 | struct device *dev = &hisi_hba->pdev->dev; |
Xiang Chen | 13c5990 | 2017-01-20 20:45:24 +0800 | [diff] [blame] | 81 | struct domain_device *device = task->dev; |
| 82 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
John Garry | 27a3f22 | 2015-11-18 00:50:50 +0800 | [diff] [blame] | 83 | |
| 84 | if (!slot->task) |
| 85 | return; |
| 86 | |
| 87 | if (!sas_protocol_ata(task->task_proto)) |
| 88 | if (slot->n_elem) |
| 89 | dma_unmap_sg(dev, task->scatter, slot->n_elem, |
| 90 | task->data_dir); |
| 91 | |
| 92 | if (slot->command_table) |
| 93 | dma_pool_free(hisi_hba->command_table_pool, |
| 94 | slot->command_table, slot->command_table_dma); |
| 95 | |
| 96 | if (slot->status_buffer) |
| 97 | dma_pool_free(hisi_hba->status_buffer_pool, |
| 98 | slot->status_buffer, slot->status_buffer_dma); |
| 99 | |
| 100 | if (slot->sge_page) |
| 101 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, |
| 102 | slot->sge_page_dma); |
| 103 | |
| 104 | list_del_init(&slot->entry); |
| 105 | task->lldd_task = NULL; |
| 106 | slot->task = NULL; |
| 107 | slot->port = NULL; |
| 108 | hisi_sas_slot_index_free(hisi_hba, slot->idx); |
Xiang Chen | 13c5990 | 2017-01-20 20:45:24 +0800 | [diff] [blame] | 109 | if (sas_dev) |
| 110 | atomic64_dec(&sas_dev->running_req); |
John Garry | 59ba49f | 2016-09-06 23:36:14 +0800 | [diff] [blame] | 111 | /* slot memory is fully zeroed when it is reused */ |
John Garry | 27a3f22 | 2015-11-18 00:50:50 +0800 | [diff] [blame] | 112 | } |
| 113 | EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); |
| 114 | |
John Garry | 66ee999 | 2015-11-18 00:50:54 +0800 | [diff] [blame] | 115 | static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, |
| 116 | struct hisi_sas_slot *slot) |
| 117 | { |
| 118 | return hisi_hba->hw->prep_smp(hisi_hba, slot); |
| 119 | } |
| 120 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 121 | static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, |
| 122 | struct hisi_sas_slot *slot, int is_tmf, |
| 123 | struct hisi_sas_tmf_task *tmf) |
| 124 | { |
| 125 | return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf); |
| 126 | } |
| 127 | |
John Garry | 6f2ff1a | 2016-01-26 02:47:20 +0800 | [diff] [blame] | 128 | static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, |
| 129 | struct hisi_sas_slot *slot) |
| 130 | { |
| 131 | return hisi_hba->hw->prep_stp(hisi_hba, slot); |
| 132 | } |
| 133 | |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 134 | static int hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba, |
| 135 | struct hisi_sas_slot *slot, |
| 136 | int device_id, int abort_flag, int tag_to_abort) |
| 137 | { |
| 138 | return hisi_hba->hw->prep_abort(hisi_hba, slot, |
| 139 | device_id, abort_flag, tag_to_abort); |
| 140 | } |
| 141 | |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 142 | /* |
| 143 | * This function will issue an abort TMF regardless of whether the |
| 144 | * task is in the sdev or not. Then it will do the task complete |
| 145 | * cleanup and callbacks. |
| 146 | */ |
| 147 | static void hisi_sas_slot_abort(struct work_struct *work) |
| 148 | { |
| 149 | struct hisi_sas_slot *abort_slot = |
| 150 | container_of(work, struct hisi_sas_slot, abort_slot); |
| 151 | struct sas_task *task = abort_slot->task; |
| 152 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); |
| 153 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 154 | struct hisi_sas_tmf_task tmf_task; |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 155 | struct scsi_lun lun; |
| 156 | struct device *dev = &hisi_hba->pdev->dev; |
| 157 | int tag = abort_slot->idx; |
John Garry | da7b66e | 2017-01-03 20:24:50 +0800 | [diff] [blame] | 158 | unsigned long flags; |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 159 | |
| 160 | if (!(task->task_proto & SAS_PROTOCOL_SSP)) { |
| 161 | dev_err(dev, "cannot abort slot for non-ssp task\n"); |
| 162 | goto out; |
| 163 | } |
| 164 | |
| 165 | int_to_scsilun(cmnd->device->lun, &lun); |
| 166 | tmf_task.tmf = TMF_ABORT_TASK; |
| 167 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); |
| 168 | |
| 169 | hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task); |
| 170 | out: |
| 171 | /* Do cleanup for this task */ |
John Garry | da7b66e | 2017-01-03 20:24:50 +0800 | [diff] [blame] | 172 | spin_lock_irqsave(&hisi_hba->lock, flags); |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 173 | hisi_sas_slot_task_free(hisi_hba, task, abort_slot); |
John Garry | da7b66e | 2017-01-03 20:24:50 +0800 | [diff] [blame] | 174 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 175 | if (task->task_done) |
| 176 | task->task_done(task); |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 177 | } |
| 178 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 179 | static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba, |
| 180 | int is_tmf, struct hisi_sas_tmf_task *tmf, |
| 181 | int *pass) |
| 182 | { |
| 183 | struct domain_device *device = task->dev; |
| 184 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 185 | struct hisi_sas_port *port; |
| 186 | struct hisi_sas_slot *slot; |
| 187 | struct hisi_sas_cmd_hdr *cmd_hdr_base; |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 188 | struct asd_sas_port *sas_port = device->port; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 189 | struct device *dev = &hisi_hba->pdev->dev; |
| 190 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; |
John Garry | 54c9dd2 | 2017-03-23 01:25:29 +0800 | [diff] [blame] | 191 | unsigned long flags; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 192 | |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 193 | if (!sas_port) { |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 194 | struct task_status_struct *ts = &task->task_status; |
| 195 | |
| 196 | ts->resp = SAS_TASK_UNDELIVERED; |
| 197 | ts->stat = SAS_PHY_DOWN; |
| 198 | /* |
| 199 | * libsas will use dev->port, should |
| 200 | * not call task_done for sata |
| 201 | */ |
| 202 | if (device->dev_type != SAS_SATA_DEV) |
| 203 | task->task_done(task); |
John Garry | ddabca2 | 2017-03-23 01:25:22 +0800 | [diff] [blame] | 204 | return SAS_PHY_DOWN; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | if (DEV_IS_GONE(sas_dev)) { |
| 208 | if (sas_dev) |
| 209 | dev_info(dev, "task prep: device %llu not ready\n", |
| 210 | sas_dev->device_id); |
| 211 | else |
| 212 | dev_info(dev, "task prep: device %016llx not ready\n", |
| 213 | SAS_ADDR(device->sas_addr)); |
| 214 | |
John Garry | ddabca2 | 2017-03-23 01:25:22 +0800 | [diff] [blame] | 215 | return SAS_PHY_DOWN; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 216 | } |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 217 | |
| 218 | port = to_hisi_sas_port(sas_port); |
John Garry | 9859f24 | 2016-08-24 19:05:52 +0800 | [diff] [blame] | 219 | if (port && !port->port_attached) { |
John Garry | 09fe9ec | 2016-09-06 23:36:18 +0800 | [diff] [blame] | 220 | dev_info(dev, "task prep: %s port%d not attach device\n", |
| 221 | (sas_protocol_ata(task->task_proto)) ? |
| 222 | "SATA/STP" : "SAS", |
| 223 | device->port->id); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 224 | |
John Garry | 09fe9ec | 2016-09-06 23:36:18 +0800 | [diff] [blame] | 225 | return SAS_PHY_DOWN; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | if (!sas_protocol_ata(task->task_proto)) { |
| 229 | if (task->num_scatter) { |
| 230 | n_elem = dma_map_sg(dev, task->scatter, |
| 231 | task->num_scatter, task->data_dir); |
| 232 | if (!n_elem) { |
| 233 | rc = -ENOMEM; |
| 234 | goto prep_out; |
| 235 | } |
| 236 | } |
| 237 | } else |
| 238 | n_elem = task->num_scatter; |
| 239 | |
John Garry | 685b6d6 | 2016-04-15 21:36:36 +0800 | [diff] [blame] | 240 | if (hisi_hba->hw->slot_index_alloc) |
| 241 | rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx, |
| 242 | device); |
| 243 | else |
| 244 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 245 | if (rc) |
| 246 | goto err_out; |
Xiang Chen | c70f1fb | 2016-11-07 20:48:31 +0800 | [diff] [blame] | 247 | rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id, |
| 248 | &dlvry_queue, &dlvry_queue_slot); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 249 | if (rc) |
| 250 | goto err_out_tag; |
| 251 | |
| 252 | slot = &hisi_hba->slot_info[slot_idx]; |
| 253 | memset(slot, 0, sizeof(struct hisi_sas_slot)); |
| 254 | |
| 255 | slot->idx = slot_idx; |
| 256 | slot->n_elem = n_elem; |
| 257 | slot->dlvry_queue = dlvry_queue; |
| 258 | slot->dlvry_queue_slot = dlvry_queue_slot; |
| 259 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; |
| 260 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; |
| 261 | slot->task = task; |
| 262 | slot->port = port; |
| 263 | task->lldd_task = slot; |
John Garry | cac9b2a | 2016-02-25 17:42:11 +0800 | [diff] [blame] | 264 | INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 265 | |
| 266 | slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool, |
| 267 | GFP_ATOMIC, |
| 268 | &slot->status_buffer_dma); |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 269 | if (!slot->status_buffer) { |
| 270 | rc = -ENOMEM; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 271 | goto err_out_slot_buf; |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 272 | } |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 273 | memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ); |
| 274 | |
| 275 | slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool, |
| 276 | GFP_ATOMIC, |
| 277 | &slot->command_table_dma); |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 278 | if (!slot->command_table) { |
| 279 | rc = -ENOMEM; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 280 | goto err_out_status_buf; |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 281 | } |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 282 | memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ); |
| 283 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); |
| 284 | |
| 285 | switch (task->task_proto) { |
John Garry | 66ee999 | 2015-11-18 00:50:54 +0800 | [diff] [blame] | 286 | case SAS_PROTOCOL_SMP: |
| 287 | rc = hisi_sas_task_prep_smp(hisi_hba, slot); |
| 288 | break; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 289 | case SAS_PROTOCOL_SSP: |
| 290 | rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf); |
| 291 | break; |
| 292 | case SAS_PROTOCOL_SATA: |
| 293 | case SAS_PROTOCOL_STP: |
| 294 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: |
John Garry | 6f2ff1a | 2016-01-26 02:47:20 +0800 | [diff] [blame] | 295 | rc = hisi_sas_task_prep_ata(hisi_hba, slot); |
| 296 | break; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 297 | default: |
| 298 | dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", |
| 299 | task->task_proto); |
| 300 | rc = -EINVAL; |
| 301 | break; |
| 302 | } |
| 303 | |
| 304 | if (rc) { |
| 305 | dev_err(dev, "task prep: rc = 0x%x\n", rc); |
| 306 | if (slot->sge_page) |
| 307 | goto err_out_sge; |
| 308 | goto err_out_command_table; |
| 309 | } |
| 310 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 311 | list_add_tail(&slot->entry, &sas_dev->list); |
John Garry | 54c9dd2 | 2017-03-23 01:25:29 +0800 | [diff] [blame] | 312 | spin_lock_irqsave(&task->task_state_lock, flags); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 313 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; |
John Garry | 54c9dd2 | 2017-03-23 01:25:29 +0800 | [diff] [blame] | 314 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 315 | |
| 316 | hisi_hba->slot_prep = slot; |
| 317 | |
John Garry | f696cc3 | 2016-11-07 20:48:39 +0800 | [diff] [blame] | 318 | atomic64_inc(&sas_dev->running_req); |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 319 | ++(*pass); |
| 320 | |
Dan Carpenter | 9c9d18e | 2015-12-09 13:48:36 +0300 | [diff] [blame] | 321 | return 0; |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 322 | |
| 323 | err_out_sge: |
| 324 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, |
| 325 | slot->sge_page_dma); |
| 326 | err_out_command_table: |
| 327 | dma_pool_free(hisi_hba->command_table_pool, slot->command_table, |
| 328 | slot->command_table_dma); |
| 329 | err_out_status_buf: |
| 330 | dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer, |
| 331 | slot->status_buffer_dma); |
| 332 | err_out_slot_buf: |
| 333 | /* Nothing to be done */ |
| 334 | err_out_tag: |
| 335 | hisi_sas_slot_index_free(hisi_hba, slot_idx); |
| 336 | err_out: |
| 337 | dev_err(dev, "task prep: failed[%d]!\n", rc); |
| 338 | if (!sas_protocol_ata(task->task_proto)) |
| 339 | if (n_elem) |
| 340 | dma_unmap_sg(dev, task->scatter, n_elem, |
| 341 | task->data_dir); |
| 342 | prep_out: |
| 343 | return rc; |
| 344 | } |
| 345 | |
| 346 | static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, |
| 347 | int is_tmf, struct hisi_sas_tmf_task *tmf) |
| 348 | { |
| 349 | u32 rc; |
| 350 | u32 pass = 0; |
| 351 | unsigned long flags; |
| 352 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); |
| 353 | struct device *dev = &hisi_hba->pdev->dev; |
| 354 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 355 | if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))) |
| 356 | return -EINVAL; |
| 357 | |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 358 | /* protect task_prep and start_delivery sequence */ |
| 359 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 360 | rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass); |
| 361 | if (rc) |
| 362 | dev_err(dev, "task exec: failed[%d]!\n", rc); |
| 363 | |
| 364 | if (likely(pass)) |
| 365 | hisi_hba->hw->start_delivery(hisi_hba); |
| 366 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 367 | |
| 368 | return rc; |
| 369 | } |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 370 | |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 371 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
| 372 | { |
| 373 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 374 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 375 | struct sas_ha_struct *sas_ha; |
| 376 | |
| 377 | if (!phy->phy_attached) |
| 378 | return; |
| 379 | |
| 380 | sas_ha = &hisi_hba->sha; |
| 381 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); |
| 382 | |
| 383 | if (sas_phy->phy) { |
| 384 | struct sas_phy *sphy = sas_phy->phy; |
| 385 | |
| 386 | sphy->negotiated_linkrate = sas_phy->linkrate; |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 387 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; |
Xiang Chen | 2ae7578 | 2016-11-07 20:48:40 +0800 | [diff] [blame] | 388 | sphy->maximum_linkrate_hw = |
| 389 | hisi_hba->hw->phy_get_max_linkrate(); |
| 390 | if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) |
| 391 | sphy->minimum_linkrate = phy->minimum_linkrate; |
| 392 | |
| 393 | if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) |
| 394 | sphy->maximum_linkrate = phy->maximum_linkrate; |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | if (phy->phy_type & PORT_TYPE_SAS) { |
| 398 | struct sas_identify_frame *id; |
| 399 | |
| 400 | id = (struct sas_identify_frame *)phy->frame_rcvd; |
| 401 | id->dev_type = phy->identify.device_type; |
| 402 | id->initiator_bits = SAS_PROTOCOL_ALL; |
| 403 | id->target_bits = phy->identify.target_port_protocols; |
| 404 | } else if (phy->phy_type & PORT_TYPE_SATA) { |
| 405 | /*Nothing*/ |
| 406 | } |
| 407 | |
| 408 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; |
| 409 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); |
| 410 | } |
| 411 | |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 412 | static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) |
| 413 | { |
| 414 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 415 | struct hisi_sas_device *sas_dev = NULL; |
| 416 | int i; |
| 417 | |
| 418 | spin_lock(&hisi_hba->lock); |
| 419 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
| 420 | if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { |
| 421 | hisi_hba->devices[i].device_id = i; |
| 422 | sas_dev = &hisi_hba->devices[i]; |
| 423 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; |
| 424 | sas_dev->dev_type = device->dev_type; |
| 425 | sas_dev->hisi_hba = hisi_hba; |
| 426 | sas_dev->sas_device = device; |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 427 | INIT_LIST_HEAD(&hisi_hba->devices[i].list); |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 428 | break; |
| 429 | } |
| 430 | } |
| 431 | spin_unlock(&hisi_hba->lock); |
| 432 | |
| 433 | return sas_dev; |
| 434 | } |
| 435 | |
| 436 | static int hisi_sas_dev_found(struct domain_device *device) |
| 437 | { |
| 438 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 439 | struct domain_device *parent_dev = device->parent; |
| 440 | struct hisi_sas_device *sas_dev; |
| 441 | struct device *dev = &hisi_hba->pdev->dev; |
| 442 | |
John Garry | 685b6d6 | 2016-04-15 21:36:36 +0800 | [diff] [blame] | 443 | if (hisi_hba->hw->alloc_dev) |
| 444 | sas_dev = hisi_hba->hw->alloc_dev(device); |
| 445 | else |
| 446 | sas_dev = hisi_sas_alloc_dev(device); |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 447 | if (!sas_dev) { |
| 448 | dev_err(dev, "fail alloc dev: max support %d devices\n", |
| 449 | HISI_SAS_MAX_DEVICES); |
| 450 | return -EINVAL; |
| 451 | } |
| 452 | |
| 453 | device->lldd_dev = sas_dev; |
| 454 | hisi_hba->hw->setup_itct(hisi_hba, sas_dev); |
| 455 | |
| 456 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { |
| 457 | int phy_no; |
| 458 | u8 phy_num = parent_dev->ex_dev.num_phys; |
| 459 | struct ex_phy *phy; |
| 460 | |
| 461 | for (phy_no = 0; phy_no < phy_num; phy_no++) { |
| 462 | phy = &parent_dev->ex_dev.ex_phy[phy_no]; |
| 463 | if (SAS_ADDR(phy->attached_sas_addr) == |
| 464 | SAS_ADDR(device->sas_addr)) { |
| 465 | sas_dev->attached_phy = phy_no; |
| 466 | break; |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | if (phy_no == phy_num) { |
| 471 | dev_info(dev, "dev found: no attached " |
| 472 | "dev:%016llx at ex:%016llx\n", |
| 473 | SAS_ADDR(device->sas_addr), |
| 474 | SAS_ADDR(parent_dev->sas_addr)); |
| 475 | return -EINVAL; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | return 0; |
| 480 | } |
| 481 | |
John Garry | 31eec8a | 2016-02-25 17:42:14 +0800 | [diff] [blame] | 482 | static int hisi_sas_slave_configure(struct scsi_device *sdev) |
| 483 | { |
| 484 | struct domain_device *dev = sdev_to_domain_dev(sdev); |
| 485 | int ret = sas_slave_configure(sdev); |
| 486 | |
| 487 | if (ret) |
| 488 | return ret; |
| 489 | if (!dev_is_sata(dev)) |
| 490 | sas_change_queue_depth(sdev, 64); |
| 491 | |
| 492 | return 0; |
| 493 | } |
| 494 | |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 495 | static void hisi_sas_scan_start(struct Scsi_Host *shost) |
| 496 | { |
| 497 | struct hisi_hba *hisi_hba = shost_priv(shost); |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 498 | |
John Garry | 396b804 | 2017-03-23 01:25:19 +0800 | [diff] [blame] | 499 | hisi_hba->hw->phys_init(hisi_hba); |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) |
| 503 | { |
| 504 | struct hisi_hba *hisi_hba = shost_priv(shost); |
| 505 | struct sas_ha_struct *sha = &hisi_hba->sha; |
| 506 | |
John Garry | 396b804 | 2017-03-23 01:25:19 +0800 | [diff] [blame] | 507 | /* Wait for PHY up interrupt to occur */ |
| 508 | if (time < HZ) |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 509 | return 0; |
| 510 | |
| 511 | sas_drain_work(sha); |
| 512 | return 1; |
| 513 | } |
| 514 | |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 515 | static void hisi_sas_phyup_work(struct work_struct *work) |
| 516 | { |
| 517 | struct hisi_sas_phy *phy = |
| 518 | container_of(work, struct hisi_sas_phy, phyup_ws); |
| 519 | struct hisi_hba *hisi_hba = phy->hisi_hba; |
| 520 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 521 | int phy_no = sas_phy->id; |
| 522 | |
| 523 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ |
| 524 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); |
| 525 | } |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 526 | |
| 527 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) |
| 528 | { |
| 529 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 530 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 531 | |
| 532 | phy->hisi_hba = hisi_hba; |
| 533 | phy->port = NULL; |
| 534 | init_timer(&phy->timer); |
| 535 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; |
| 536 | sas_phy->class = SAS; |
| 537 | sas_phy->iproto = SAS_PROTOCOL_ALL; |
| 538 | sas_phy->tproto = 0; |
| 539 | sas_phy->type = PHY_TYPE_PHYSICAL; |
| 540 | sas_phy->role = PHY_ROLE_INITIATOR; |
| 541 | sas_phy->oob_mode = OOB_NOT_CONNECTED; |
| 542 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; |
| 543 | sas_phy->id = phy_no; |
| 544 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; |
| 545 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; |
| 546 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; |
| 547 | sas_phy->lldd_phy = phy; |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame] | 548 | |
| 549 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 550 | } |
| 551 | |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 552 | static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) |
| 553 | { |
| 554 | struct sas_ha_struct *sas_ha = sas_phy->ha; |
| 555 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; |
| 556 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; |
| 557 | struct asd_sas_port *sas_port = sas_phy->port; |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 558 | struct hisi_sas_port *port = to_hisi_sas_port(sas_port); |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 559 | unsigned long flags; |
| 560 | |
| 561 | if (!sas_port) |
| 562 | return; |
| 563 | |
| 564 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 565 | port->port_attached = 1; |
| 566 | port->id = phy->port_id; |
| 567 | phy->port = port; |
| 568 | sas_port->lldd_port = port; |
| 569 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 570 | } |
| 571 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 572 | static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, |
| 573 | struct sas_task *task, |
| 574 | struct hisi_sas_slot *slot) |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 575 | { |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 576 | struct task_status_struct *ts; |
| 577 | unsigned long flags; |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 578 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 579 | if (!task) |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 580 | return; |
| 581 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 582 | ts = &task->task_status; |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 583 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 584 | ts->resp = SAS_TASK_COMPLETE; |
| 585 | ts->stat = SAS_ABORTED_TASK; |
| 586 | spin_lock_irqsave(&task->task_state_lock, flags); |
| 587 | task->task_state_flags &= |
| 588 | ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR); |
| 589 | task->task_state_flags |= SAS_TASK_STATE_DONE; |
| 590 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 591 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 592 | hisi_sas_slot_task_free(hisi_hba, task, slot); |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 593 | } |
| 594 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 595 | /* hisi_hba.lock should be locked */ |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 596 | static void hisi_sas_release_task(struct hisi_hba *hisi_hba, |
| 597 | struct domain_device *device) |
| 598 | { |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 599 | struct hisi_sas_slot *slot, *slot2; |
| 600 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 601 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 602 | list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry) |
| 603 | hisi_sas_do_release_task(hisi_hba, slot->task, slot); |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 604 | } |
| 605 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 606 | static void hisi_sas_release_tasks(struct hisi_hba *hisi_hba) |
| 607 | { |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 608 | struct hisi_sas_device *sas_dev; |
| 609 | struct domain_device *device; |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 610 | int i; |
| 611 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 612 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
| 613 | sas_dev = &hisi_hba->devices[i]; |
| 614 | device = sas_dev->sas_device; |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 615 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 616 | if ((sas_dev->dev_type == SAS_PHY_UNUSED) || |
| 617 | !device) |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 618 | continue; |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 619 | |
| 620 | hisi_sas_release_task(hisi_hba, device); |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 621 | } |
| 622 | } |
| 623 | |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 624 | static void hisi_sas_dev_gone(struct domain_device *device) |
| 625 | { |
| 626 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 627 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 628 | struct device *dev = &hisi_hba->pdev->dev; |
| 629 | u64 dev_id = sas_dev->device_id; |
| 630 | |
| 631 | dev_info(dev, "found dev[%lld:%x] is gone\n", |
| 632 | sas_dev->device_id, sas_dev->dev_type); |
| 633 | |
John Garry | 40f2702 | 2016-08-24 19:05:48 +0800 | [diff] [blame] | 634 | hisi_sas_internal_task_abort(hisi_hba, device, |
| 635 | HISI_SAS_INT_ABT_DEV, 0); |
| 636 | |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 637 | hisi_hba->hw->free_device(hisi_hba, sas_dev); |
| 638 | device->lldd_dev = NULL; |
| 639 | memset(sas_dev, 0, sizeof(*sas_dev)); |
| 640 | sas_dev->device_id = dev_id; |
| 641 | sas_dev->dev_type = SAS_PHY_UNUSED; |
| 642 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; |
| 643 | } |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 644 | |
| 645 | static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) |
| 646 | { |
| 647 | return hisi_sas_task_exec(task, gfp_flags, 0, NULL); |
| 648 | } |
| 649 | |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 650 | static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, |
| 651 | void *funcdata) |
| 652 | { |
| 653 | struct sas_ha_struct *sas_ha = sas_phy->ha; |
| 654 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; |
| 655 | int phy_no = sas_phy->id; |
| 656 | |
| 657 | switch (func) { |
| 658 | case PHY_FUNC_HARD_RESET: |
| 659 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); |
| 660 | break; |
| 661 | |
| 662 | case PHY_FUNC_LINK_RESET: |
John Garry | b4c67a6 | 2017-03-23 01:25:23 +0800 | [diff] [blame] | 663 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); |
| 664 | msleep(100); |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 665 | hisi_hba->hw->phy_enable(hisi_hba, phy_no); |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 666 | break; |
| 667 | |
| 668 | case PHY_FUNC_DISABLE: |
| 669 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); |
| 670 | break; |
| 671 | |
| 672 | case PHY_FUNC_SET_LINK_RATE: |
Xiang Chen | 2ae7578 | 2016-11-07 20:48:40 +0800 | [diff] [blame] | 673 | hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata); |
| 674 | break; |
| 675 | |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 676 | case PHY_FUNC_RELEASE_SPINUP_HOLD: |
| 677 | default: |
| 678 | return -EOPNOTSUPP; |
| 679 | } |
| 680 | return 0; |
| 681 | } |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 682 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 683 | static void hisi_sas_task_done(struct sas_task *task) |
| 684 | { |
| 685 | if (!del_timer(&task->slow_task->timer)) |
| 686 | return; |
| 687 | complete(&task->slow_task->completion); |
| 688 | } |
| 689 | |
| 690 | static void hisi_sas_tmf_timedout(unsigned long data) |
| 691 | { |
| 692 | struct sas_task *task = (struct sas_task *)data; |
| 693 | |
| 694 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
| 695 | complete(&task->slow_task->completion); |
| 696 | } |
| 697 | |
| 698 | #define TASK_TIMEOUT 20 |
| 699 | #define TASK_RETRY 3 |
| 700 | static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, |
| 701 | void *parameter, u32 para_len, |
| 702 | struct hisi_sas_tmf_task *tmf) |
| 703 | { |
| 704 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 705 | struct hisi_hba *hisi_hba = sas_dev->hisi_hba; |
| 706 | struct device *dev = &hisi_hba->pdev->dev; |
| 707 | struct sas_task *task; |
| 708 | int res, retry; |
| 709 | |
| 710 | for (retry = 0; retry < TASK_RETRY; retry++) { |
| 711 | task = sas_alloc_slow_task(GFP_KERNEL); |
| 712 | if (!task) |
| 713 | return -ENOMEM; |
| 714 | |
| 715 | task->dev = device; |
| 716 | task->task_proto = device->tproto; |
| 717 | |
Xiang Chen | 7c594f0 | 2017-03-23 01:25:20 +0800 | [diff] [blame] | 718 | if (dev_is_sata(device)) { |
| 719 | task->ata_task.device_control_reg_update = 1; |
| 720 | memcpy(&task->ata_task.fis, parameter, para_len); |
| 721 | } else { |
| 722 | memcpy(&task->ssp_task, parameter, para_len); |
| 723 | } |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 724 | task->task_done = hisi_sas_task_done; |
| 725 | |
| 726 | task->slow_task->timer.data = (unsigned long) task; |
| 727 | task->slow_task->timer.function = hisi_sas_tmf_timedout; |
| 728 | task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; |
| 729 | add_timer(&task->slow_task->timer); |
| 730 | |
| 731 | res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); |
| 732 | |
| 733 | if (res) { |
| 734 | del_timer(&task->slow_task->timer); |
| 735 | dev_err(dev, "abort tmf: executing internal task failed: %d\n", |
| 736 | res); |
| 737 | goto ex_err; |
| 738 | } |
| 739 | |
| 740 | wait_for_completion(&task->slow_task->completion); |
| 741 | res = TMF_RESP_FUNC_FAILED; |
| 742 | /* Even TMF timed out, return direct. */ |
| 743 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { |
| 744 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { |
Xiang Chen | 7c594f0 | 2017-03-23 01:25:20 +0800 | [diff] [blame] | 745 | dev_err(dev, "abort tmf: TMF task timeout\n"); |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 746 | goto ex_err; |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
John Garry | 1af1b80 | 2016-02-25 17:42:10 +0800 | [diff] [blame] | 751 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 752 | res = TMF_RESP_FUNC_COMPLETE; |
| 753 | break; |
| 754 | } |
| 755 | |
| 756 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
John Garry | 4ffde48 | 2016-08-24 19:05:53 +0800 | [diff] [blame] | 757 | task->task_status.stat == TMF_RESP_FUNC_SUCC) { |
| 758 | res = TMF_RESP_FUNC_SUCC; |
| 759 | break; |
| 760 | } |
| 761 | |
| 762 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 763 | task->task_status.stat == SAS_DATA_UNDERRUN) { |
| 764 | /* no error, but return the number of bytes of |
| 765 | * underrun |
| 766 | */ |
| 767 | dev_warn(dev, "abort tmf: task to dev %016llx " |
| 768 | "resp: 0x%x sts 0x%x underrun\n", |
| 769 | SAS_ADDR(device->sas_addr), |
| 770 | task->task_status.resp, |
| 771 | task->task_status.stat); |
| 772 | res = task->task_status.residual; |
| 773 | break; |
| 774 | } |
| 775 | |
| 776 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 777 | task->task_status.stat == SAS_DATA_OVERRUN) { |
| 778 | dev_warn(dev, "abort tmf: blocked task error\n"); |
| 779 | res = -EMSGSIZE; |
| 780 | break; |
| 781 | } |
| 782 | |
| 783 | dev_warn(dev, "abort tmf: task to dev " |
| 784 | "%016llx resp: 0x%x status 0x%x\n", |
| 785 | SAS_ADDR(device->sas_addr), task->task_status.resp, |
| 786 | task->task_status.stat); |
| 787 | sas_free_task(task); |
| 788 | task = NULL; |
| 789 | } |
| 790 | ex_err: |
Xiang Chen | d2d7e7a | 2016-11-07 20:48:34 +0800 | [diff] [blame] | 791 | if (retry == TASK_RETRY) |
| 792 | dev_warn(dev, "abort tmf: executing internal task failed!\n"); |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 793 | sas_free_task(task); |
| 794 | return res; |
| 795 | } |
| 796 | |
Xiang Chen | 7c594f0 | 2017-03-23 01:25:20 +0800 | [diff] [blame] | 797 | static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev, |
| 798 | bool reset, int pmp, u8 *fis) |
| 799 | { |
| 800 | struct ata_taskfile tf; |
| 801 | |
| 802 | ata_tf_init(dev, &tf); |
| 803 | if (reset) |
| 804 | tf.ctl |= ATA_SRST; |
| 805 | else |
| 806 | tf.ctl &= ~ATA_SRST; |
| 807 | tf.command = ATA_CMD_DEV_RESET; |
| 808 | ata_tf_to_fis(&tf, pmp, 0, fis); |
| 809 | } |
| 810 | |
| 811 | static int hisi_sas_softreset_ata_disk(struct domain_device *device) |
| 812 | { |
| 813 | u8 fis[20] = {0}; |
| 814 | struct ata_port *ap = device->sata_dev.ap; |
| 815 | struct ata_link *link; |
| 816 | int rc = TMF_RESP_FUNC_FAILED; |
| 817 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 818 | struct device *dev = &hisi_hba->pdev->dev; |
| 819 | int s = sizeof(struct host_to_dev_fis); |
| 820 | unsigned long flags; |
| 821 | |
| 822 | ata_for_each_link(link, ap, EDGE) { |
| 823 | int pmp = sata_srst_pmp(link); |
| 824 | |
| 825 | hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); |
| 826 | rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL); |
| 827 | if (rc != TMF_RESP_FUNC_COMPLETE) |
| 828 | break; |
| 829 | } |
| 830 | |
| 831 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
| 832 | ata_for_each_link(link, ap, EDGE) { |
| 833 | int pmp = sata_srst_pmp(link); |
| 834 | |
| 835 | hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis); |
| 836 | rc = hisi_sas_exec_internal_tmf_task(device, fis, |
| 837 | s, NULL); |
| 838 | if (rc != TMF_RESP_FUNC_COMPLETE) |
| 839 | dev_err(dev, "ata disk de-reset failed\n"); |
| 840 | } |
| 841 | } else { |
| 842 | dev_err(dev, "ata disk reset failed\n"); |
| 843 | } |
| 844 | |
| 845 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
| 846 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 847 | hisi_sas_release_task(hisi_hba, device); |
| 848 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 849 | } |
| 850 | |
| 851 | return rc; |
| 852 | } |
| 853 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 854 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, |
| 855 | u8 *lun, struct hisi_sas_tmf_task *tmf) |
| 856 | { |
| 857 | struct sas_ssp_task ssp_task; |
| 858 | |
| 859 | if (!(device->tproto & SAS_PROTOCOL_SSP)) |
| 860 | return TMF_RESP_FUNC_ESUPP; |
| 861 | |
| 862 | memcpy(ssp_task.LUN, lun, 8); |
| 863 | |
| 864 | return hisi_sas_exec_internal_tmf_task(device, &ssp_task, |
| 865 | sizeof(ssp_task), tmf); |
| 866 | } |
| 867 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 868 | static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba) |
| 869 | { |
| 870 | int rc; |
| 871 | |
| 872 | if (!hisi_hba->hw->soft_reset) |
| 873 | return -1; |
| 874 | |
| 875 | if (!test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) { |
| 876 | struct device *dev = &hisi_hba->pdev->dev; |
| 877 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; |
| 878 | unsigned long flags; |
| 879 | |
| 880 | dev_dbg(dev, "controller reset begins!\n"); |
| 881 | scsi_block_requests(hisi_hba->shost); |
| 882 | rc = hisi_hba->hw->soft_reset(hisi_hba); |
| 883 | if (rc) { |
| 884 | dev_warn(dev, "controller reset failed (%d)\n", rc); |
| 885 | goto out; |
| 886 | } |
| 887 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 888 | hisi_sas_release_tasks(hisi_hba); |
| 889 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 890 | |
| 891 | sas_ha->notify_ha_event(sas_ha, HAE_RESET); |
| 892 | dev_dbg(dev, "controller reset successful!\n"); |
| 893 | } else |
| 894 | return -1; |
| 895 | |
| 896 | out: |
| 897 | scsi_unblock_requests(hisi_hba->shost); |
| 898 | clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags); |
| 899 | return rc; |
| 900 | } |
| 901 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 902 | static int hisi_sas_abort_task(struct sas_task *task) |
| 903 | { |
| 904 | struct scsi_lun lun; |
| 905 | struct hisi_sas_tmf_task tmf_task; |
| 906 | struct domain_device *device = task->dev; |
| 907 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 908 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); |
| 909 | struct device *dev = &hisi_hba->pdev->dev; |
| 910 | int rc = TMF_RESP_FUNC_FAILED; |
| 911 | unsigned long flags; |
| 912 | |
| 913 | if (!sas_dev) { |
| 914 | dev_warn(dev, "Device has been removed\n"); |
| 915 | return TMF_RESP_FUNC_FAILED; |
| 916 | } |
| 917 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 918 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 919 | rc = TMF_RESP_FUNC_COMPLETE; |
| 920 | goto out; |
| 921 | } |
| 922 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 923 | sas_dev->dev_status = HISI_SAS_DEV_EH; |
| 924 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { |
| 925 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 926 | struct hisi_sas_slot *slot = task->lldd_task; |
| 927 | u32 tag = slot->idx; |
John Garry | c35279f | 2017-03-23 01:25:25 +0800 | [diff] [blame] | 928 | int rc2; |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 929 | |
| 930 | int_to_scsilun(cmnd->device->lun, &lun); |
| 931 | tmf_task.tmf = TMF_ABORT_TASK; |
| 932 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); |
| 933 | |
| 934 | rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, |
| 935 | &tmf_task); |
| 936 | |
John Garry | c35279f | 2017-03-23 01:25:25 +0800 | [diff] [blame] | 937 | rc2 = hisi_sas_internal_task_abort(hisi_hba, device, |
| 938 | HISI_SAS_INT_ABT_CMD, tag); |
| 939 | /* |
| 940 | * If the TMF finds that the IO is not in the device and also |
| 941 | * the internal abort does not succeed, then it is safe to |
| 942 | * free the slot. |
| 943 | * Note: if the internal abort succeeds then the slot |
| 944 | * will have already been completed |
| 945 | */ |
| 946 | if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) { |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 947 | if (task->lldd_task) { |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 948 | spin_lock_irqsave(&hisi_hba->lock, flags); |
John Garry | c35279f | 2017-03-23 01:25:25 +0800 | [diff] [blame] | 949 | hisi_sas_do_release_task(hisi_hba, task, slot); |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 950 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 951 | } |
| 952 | } |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 953 | } else if (task->task_proto & SAS_PROTOCOL_SATA || |
| 954 | task->task_proto & SAS_PROTOCOL_STP) { |
| 955 | if (task->dev->dev_type == SAS_SATA_DEV) { |
John Garry | dc8a49c | 2016-08-24 19:05:49 +0800 | [diff] [blame] | 956 | hisi_sas_internal_task_abort(hisi_hba, device, |
| 957 | HISI_SAS_INT_ABT_DEV, 0); |
Xiang Chen | 7c594f0 | 2017-03-23 01:25:20 +0800 | [diff] [blame] | 958 | rc = hisi_sas_softreset_ata_disk(device); |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 959 | } |
John Garry | dc8a49c | 2016-08-24 19:05:49 +0800 | [diff] [blame] | 960 | } else if (task->task_proto & SAS_PROTOCOL_SMP) { |
| 961 | /* SMP */ |
| 962 | struct hisi_sas_slot *slot = task->lldd_task; |
| 963 | u32 tag = slot->idx; |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 964 | |
John Garry | dc8a49c | 2016-08-24 19:05:49 +0800 | [diff] [blame] | 965 | hisi_sas_internal_task_abort(hisi_hba, device, |
| 966 | HISI_SAS_INT_ABT_CMD, tag); |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 967 | } |
| 968 | |
| 969 | out: |
| 970 | if (rc != TMF_RESP_FUNC_COMPLETE) |
| 971 | dev_notice(dev, "abort task: rc=%d\n", rc); |
| 972 | return rc; |
| 973 | } |
| 974 | |
| 975 | static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) |
| 976 | { |
| 977 | struct hisi_sas_tmf_task tmf_task; |
| 978 | int rc = TMF_RESP_FUNC_FAILED; |
| 979 | |
| 980 | tmf_task.tmf = TMF_ABORT_TASK_SET; |
| 981 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); |
| 982 | |
| 983 | return rc; |
| 984 | } |
| 985 | |
| 986 | static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) |
| 987 | { |
| 988 | int rc = TMF_RESP_FUNC_FAILED; |
| 989 | struct hisi_sas_tmf_task tmf_task; |
| 990 | |
| 991 | tmf_task.tmf = TMF_CLEAR_ACA; |
| 992 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); |
| 993 | |
| 994 | return rc; |
| 995 | } |
| 996 | |
| 997 | static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) |
| 998 | { |
| 999 | struct sas_phy *phy = sas_get_local_phy(device); |
| 1000 | int rc, reset_type = (device->dev_type == SAS_SATA_DEV || |
| 1001 | (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; |
| 1002 | rc = sas_phy_reset(phy, reset_type); |
| 1003 | sas_put_local_phy(phy); |
| 1004 | msleep(2000); |
| 1005 | return rc; |
| 1006 | } |
| 1007 | |
| 1008 | static int hisi_sas_I_T_nexus_reset(struct domain_device *device) |
| 1009 | { |
| 1010 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 1011 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 1012 | unsigned long flags; |
| 1013 | int rc = TMF_RESP_FUNC_FAILED; |
| 1014 | |
| 1015 | if (sas_dev->dev_status != HISI_SAS_DEV_EH) |
| 1016 | return TMF_RESP_FUNC_FAILED; |
| 1017 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; |
| 1018 | |
| 1019 | rc = hisi_sas_debug_I_T_nexus_reset(device); |
| 1020 | |
Xiang Chen | 6131243 | 2017-03-23 01:25:28 +0800 | [diff] [blame] | 1021 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
| 1022 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 1023 | hisi_sas_release_task(hisi_hba, device); |
| 1024 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 1025 | } |
| 1026 | return rc; |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1027 | } |
| 1028 | |
| 1029 | static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) |
| 1030 | { |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1031 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 1032 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); |
| 1033 | struct device *dev = &hisi_hba->pdev->dev; |
| 1034 | unsigned long flags; |
| 1035 | int rc = TMF_RESP_FUNC_FAILED; |
| 1036 | |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1037 | sas_dev->dev_status = HISI_SAS_DEV_EH; |
John Garry | 055945d | 2017-03-23 01:25:26 +0800 | [diff] [blame] | 1038 | if (dev_is_sata(device)) { |
| 1039 | struct sas_phy *phy; |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1040 | |
John Garry | 055945d | 2017-03-23 01:25:26 +0800 | [diff] [blame] | 1041 | /* Clear internal IO and then hardreset */ |
| 1042 | rc = hisi_sas_internal_task_abort(hisi_hba, device, |
| 1043 | HISI_SAS_INT_ABT_DEV, 0); |
| 1044 | if (rc == TMF_RESP_FUNC_FAILED) |
| 1045 | goto out; |
| 1046 | |
| 1047 | phy = sas_get_local_phy(device); |
| 1048 | |
| 1049 | rc = sas_phy_reset(phy, 1); |
| 1050 | |
| 1051 | if (rc == 0) { |
| 1052 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 1053 | hisi_sas_release_task(hisi_hba, device); |
| 1054 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 1055 | } |
| 1056 | sas_put_local_phy(phy); |
| 1057 | } else { |
| 1058 | struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET }; |
| 1059 | |
| 1060 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); |
| 1061 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
| 1062 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 1063 | hisi_sas_release_task(hisi_hba, device); |
| 1064 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 1065 | } |
| 1066 | } |
| 1067 | out: |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1068 | dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n", |
| 1069 | sas_dev->device_id, rc); |
| 1070 | return rc; |
| 1071 | } |
| 1072 | |
| 1073 | static int hisi_sas_query_task(struct sas_task *task) |
| 1074 | { |
| 1075 | struct scsi_lun lun; |
| 1076 | struct hisi_sas_tmf_task tmf_task; |
| 1077 | int rc = TMF_RESP_FUNC_FAILED; |
| 1078 | |
| 1079 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { |
| 1080 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 1081 | struct domain_device *device = task->dev; |
| 1082 | struct hisi_sas_slot *slot = task->lldd_task; |
| 1083 | u32 tag = slot->idx; |
| 1084 | |
| 1085 | int_to_scsilun(cmnd->device->lun, &lun); |
| 1086 | tmf_task.tmf = TMF_QUERY_TASK; |
| 1087 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); |
| 1088 | |
| 1089 | rc = hisi_sas_debug_issue_ssp_tmf(device, |
| 1090 | lun.scsi_lun, |
| 1091 | &tmf_task); |
| 1092 | switch (rc) { |
| 1093 | /* The task is still in Lun, release it then */ |
| 1094 | case TMF_RESP_FUNC_SUCC: |
| 1095 | /* The task is not in Lun or failed, reset the phy */ |
| 1096 | case TMF_RESP_FUNC_FAILED: |
| 1097 | case TMF_RESP_FUNC_COMPLETE: |
| 1098 | break; |
Xiang Chen | 997ee43 | 2016-11-07 20:48:35 +0800 | [diff] [blame] | 1099 | default: |
| 1100 | rc = TMF_RESP_FUNC_FAILED; |
| 1101 | break; |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1102 | } |
| 1103 | } |
| 1104 | return rc; |
| 1105 | } |
| 1106 | |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1107 | static int |
| 1108 | hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, u64 device_id, |
| 1109 | struct sas_task *task, int abort_flag, |
| 1110 | int task_tag) |
| 1111 | { |
| 1112 | struct domain_device *device = task->dev; |
| 1113 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 1114 | struct device *dev = &hisi_hba->pdev->dev; |
| 1115 | struct hisi_sas_port *port; |
| 1116 | struct hisi_sas_slot *slot; |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 1117 | struct asd_sas_port *sas_port = device->port; |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1118 | struct hisi_sas_cmd_hdr *cmd_hdr_base; |
| 1119 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; |
John Garry | 54c9dd2 | 2017-03-23 01:25:29 +0800 | [diff] [blame] | 1120 | unsigned long flags; |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1121 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 1122 | if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))) |
| 1123 | return -EINVAL; |
| 1124 | |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1125 | if (!device->port) |
| 1126 | return -1; |
| 1127 | |
John Garry | 2e244f0 | 2017-03-23 01:25:17 +0800 | [diff] [blame] | 1128 | port = to_hisi_sas_port(sas_port); |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1129 | |
| 1130 | /* simply get a slot and send abort command */ |
| 1131 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); |
| 1132 | if (rc) |
| 1133 | goto err_out; |
Xiang Chen | c70f1fb | 2016-11-07 20:48:31 +0800 | [diff] [blame] | 1134 | rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id, |
| 1135 | &dlvry_queue, &dlvry_queue_slot); |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1136 | if (rc) |
| 1137 | goto err_out_tag; |
| 1138 | |
| 1139 | slot = &hisi_hba->slot_info[slot_idx]; |
| 1140 | memset(slot, 0, sizeof(struct hisi_sas_slot)); |
| 1141 | |
| 1142 | slot->idx = slot_idx; |
| 1143 | slot->n_elem = n_elem; |
| 1144 | slot->dlvry_queue = dlvry_queue; |
| 1145 | slot->dlvry_queue_slot = dlvry_queue_slot; |
| 1146 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; |
| 1147 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; |
| 1148 | slot->task = task; |
| 1149 | slot->port = port; |
| 1150 | task->lldd_task = slot; |
| 1151 | |
| 1152 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); |
| 1153 | |
| 1154 | rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id, |
| 1155 | abort_flag, task_tag); |
| 1156 | if (rc) |
| 1157 | goto err_out_tag; |
| 1158 | |
John Garry | 405314d | 2017-03-23 01:25:21 +0800 | [diff] [blame] | 1159 | |
| 1160 | list_add_tail(&slot->entry, &sas_dev->list); |
John Garry | 54c9dd2 | 2017-03-23 01:25:29 +0800 | [diff] [blame] | 1161 | spin_lock_irqsave(&task->task_state_lock, flags); |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1162 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; |
John Garry | 54c9dd2 | 2017-03-23 01:25:29 +0800 | [diff] [blame] | 1163 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1164 | |
| 1165 | hisi_hba->slot_prep = slot; |
| 1166 | |
John Garry | f696cc3 | 2016-11-07 20:48:39 +0800 | [diff] [blame] | 1167 | atomic64_inc(&sas_dev->running_req); |
| 1168 | |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1169 | /* send abort command to our chip */ |
| 1170 | hisi_hba->hw->start_delivery(hisi_hba); |
| 1171 | |
| 1172 | return 0; |
| 1173 | |
| 1174 | err_out_tag: |
| 1175 | hisi_sas_slot_index_free(hisi_hba, slot_idx); |
| 1176 | err_out: |
| 1177 | dev_err(dev, "internal abort task prep: failed[%d]!\n", rc); |
| 1178 | |
| 1179 | return rc; |
| 1180 | } |
| 1181 | |
| 1182 | /** |
| 1183 | * hisi_sas_internal_task_abort -- execute an internal |
| 1184 | * abort command for single IO command or a device |
| 1185 | * @hisi_hba: host controller struct |
| 1186 | * @device: domain device |
| 1187 | * @abort_flag: mode of operation, device or single IO |
| 1188 | * @tag: tag of IO to be aborted (only relevant to single |
| 1189 | * IO mode) |
| 1190 | */ |
| 1191 | static int |
| 1192 | hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, |
| 1193 | struct domain_device *device, |
| 1194 | int abort_flag, int tag) |
| 1195 | { |
| 1196 | struct sas_task *task; |
| 1197 | struct hisi_sas_device *sas_dev = device->lldd_dev; |
| 1198 | struct device *dev = &hisi_hba->pdev->dev; |
| 1199 | int res; |
| 1200 | unsigned long flags; |
| 1201 | |
| 1202 | if (!hisi_hba->hw->prep_abort) |
| 1203 | return -EOPNOTSUPP; |
| 1204 | |
| 1205 | task = sas_alloc_slow_task(GFP_KERNEL); |
| 1206 | if (!task) |
| 1207 | return -ENOMEM; |
| 1208 | |
| 1209 | task->dev = device; |
| 1210 | task->task_proto = device->tproto; |
| 1211 | task->task_done = hisi_sas_task_done; |
| 1212 | task->slow_task->timer.data = (unsigned long)task; |
| 1213 | task->slow_task->timer.function = hisi_sas_tmf_timedout; |
| 1214 | task->slow_task->timer.expires = jiffies + 20*HZ; |
| 1215 | add_timer(&task->slow_task->timer); |
| 1216 | |
| 1217 | /* Lock as we are alloc'ing a slot, which cannot be interrupted */ |
| 1218 | spin_lock_irqsave(&hisi_hba->lock, flags); |
| 1219 | res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id, |
| 1220 | task, abort_flag, tag); |
| 1221 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
| 1222 | if (res) { |
| 1223 | del_timer(&task->slow_task->timer); |
| 1224 | dev_err(dev, "internal task abort: executing internal task failed: %d\n", |
| 1225 | res); |
| 1226 | goto exit; |
| 1227 | } |
| 1228 | wait_for_completion(&task->slow_task->completion); |
| 1229 | res = TMF_RESP_FUNC_FAILED; |
| 1230 | |
| 1231 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 1232 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
| 1233 | res = TMF_RESP_FUNC_COMPLETE; |
| 1234 | goto exit; |
| 1235 | } |
| 1236 | |
John Garry | c35279f | 2017-03-23 01:25:25 +0800 | [diff] [blame] | 1237 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 1238 | task->task_status.stat == TMF_RESP_FUNC_SUCC) { |
| 1239 | res = TMF_RESP_FUNC_SUCC; |
| 1240 | goto exit; |
| 1241 | } |
| 1242 | |
John Garry | 6fcdda8 | 2017-03-23 01:25:30 +0800 | [diff] [blame^] | 1243 | /* Internal abort timed out */ |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1244 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { |
| 1245 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { |
| 1246 | dev_err(dev, "internal task abort: timeout.\n"); |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1247 | } |
| 1248 | } |
| 1249 | |
| 1250 | exit: |
John Garry | 297d730 | 2017-01-20 20:45:22 +0800 | [diff] [blame] | 1251 | dev_dbg(dev, "internal task abort: task to dev %016llx task=%p " |
John Garry | 441c274 | 2016-08-24 19:05:47 +0800 | [diff] [blame] | 1252 | "resp: 0x%x sts 0x%x\n", |
| 1253 | SAS_ADDR(device->sas_addr), |
| 1254 | task, |
| 1255 | task->task_status.resp, /* 0 is complete, -1 is undelivered */ |
| 1256 | task->task_status.stat); |
| 1257 | sas_free_task(task); |
| 1258 | |
| 1259 | return res; |
| 1260 | } |
| 1261 | |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 1262 | static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) |
| 1263 | { |
| 1264 | hisi_sas_port_notify_formed(sas_phy); |
| 1265 | } |
| 1266 | |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 1267 | static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) |
| 1268 | { |
| 1269 | phy->phy_attached = 0; |
| 1270 | phy->phy_type = 0; |
| 1271 | phy->port = NULL; |
| 1272 | } |
| 1273 | |
| 1274 | void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) |
| 1275 | { |
| 1276 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 1277 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 1278 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; |
| 1279 | |
| 1280 | if (rdy) { |
| 1281 | /* Phy down but ready */ |
| 1282 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); |
| 1283 | hisi_sas_port_notify_formed(sas_phy); |
| 1284 | } else { |
| 1285 | struct hisi_sas_port *port = phy->port; |
| 1286 | |
| 1287 | /* Phy down and not ready */ |
| 1288 | sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); |
| 1289 | sas_phy_disconnected(sas_phy); |
| 1290 | |
| 1291 | if (port) { |
| 1292 | if (phy->phy_type & PORT_TYPE_SAS) { |
| 1293 | int port_id = port->id; |
| 1294 | |
| 1295 | if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, |
| 1296 | port_id)) |
| 1297 | port->port_attached = 0; |
| 1298 | } else if (phy->phy_type & PORT_TYPE_SATA) |
| 1299 | port->port_attached = 0; |
| 1300 | } |
| 1301 | hisi_sas_phy_disconnected(phy); |
| 1302 | } |
| 1303 | } |
| 1304 | EXPORT_SYMBOL_GPL(hisi_sas_phy_down); |
| 1305 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 1306 | void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state, |
| 1307 | u32 state) |
| 1308 | { |
| 1309 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; |
| 1310 | int phy_no; |
| 1311 | |
| 1312 | for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { |
| 1313 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 1314 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 1315 | struct asd_sas_port *sas_port = sas_phy->port; |
| 1316 | struct domain_device *dev; |
| 1317 | |
| 1318 | if (sas_phy->enabled) { |
| 1319 | /* Report PHY state change to libsas */ |
| 1320 | if (state & (1 << phy_no)) |
| 1321 | continue; |
| 1322 | |
| 1323 | if (old_state & (1 << phy_no)) |
| 1324 | /* PHY down but was up before */ |
| 1325 | hisi_sas_phy_down(hisi_hba, phy_no, 0); |
| 1326 | } |
| 1327 | if (!sas_port) |
| 1328 | continue; |
| 1329 | dev = sas_port->port_dev; |
| 1330 | |
| 1331 | if (DEV_IS_EXPANDER(dev->dev_type)) |
| 1332 | sas_ha->notify_phy_event(sas_phy, PORTE_BROADCAST_RCVD); |
| 1333 | } |
| 1334 | } |
| 1335 | EXPORT_SYMBOL_GPL(hisi_sas_rescan_topology); |
| 1336 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1337 | static struct scsi_transport_template *hisi_sas_stt; |
| 1338 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1339 | static struct scsi_host_template hisi_sas_sht = { |
| 1340 | .module = THIS_MODULE, |
| 1341 | .name = DRV_NAME, |
| 1342 | .queuecommand = sas_queuecommand, |
| 1343 | .target_alloc = sas_target_alloc, |
John Garry | 31eec8a | 2016-02-25 17:42:14 +0800 | [diff] [blame] | 1344 | .slave_configure = hisi_sas_slave_configure, |
John Garry | 701f75e | 2015-11-18 00:50:55 +0800 | [diff] [blame] | 1345 | .scan_finished = hisi_sas_scan_finished, |
| 1346 | .scan_start = hisi_sas_scan_start, |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1347 | .change_queue_depth = sas_change_queue_depth, |
| 1348 | .bios_param = sas_bios_param, |
| 1349 | .can_queue = 1, |
| 1350 | .this_id = -1, |
| 1351 | .sg_tablesize = SG_ALL, |
| 1352 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, |
| 1353 | .use_clustering = ENABLE_CLUSTERING, |
| 1354 | .eh_device_reset_handler = sas_eh_device_reset_handler, |
| 1355 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, |
| 1356 | .target_destroy = sas_target_destroy, |
| 1357 | .ioctl = sas_ioctl, |
| 1358 | }; |
| 1359 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1360 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
John Garry | abda97c | 2015-11-18 00:50:51 +0800 | [diff] [blame] | 1361 | .lldd_dev_found = hisi_sas_dev_found, |
| 1362 | .lldd_dev_gone = hisi_sas_dev_gone, |
John Garry | 42e7a69 | 2015-11-18 00:50:49 +0800 | [diff] [blame] | 1363 | .lldd_execute_task = hisi_sas_queue_command, |
John Garry | e4189d5 | 2015-11-18 00:50:57 +0800 | [diff] [blame] | 1364 | .lldd_control_phy = hisi_sas_control_phy, |
John Garry | 0efff30 | 2015-11-18 00:50:56 +0800 | [diff] [blame] | 1365 | .lldd_abort_task = hisi_sas_abort_task, |
| 1366 | .lldd_abort_task_set = hisi_sas_abort_task_set, |
| 1367 | .lldd_clear_aca = hisi_sas_clear_aca, |
| 1368 | .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, |
| 1369 | .lldd_lu_reset = hisi_sas_lu_reset, |
| 1370 | .lldd_query_task = hisi_sas_query_task, |
John Garry | 184a463 | 2015-11-18 00:50:52 +0800 | [diff] [blame] | 1371 | .lldd_port_formed = hisi_sas_port_formed, |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1372 | }; |
| 1373 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 1374 | void hisi_sas_init_mem(struct hisi_hba *hisi_hba) |
| 1375 | { |
| 1376 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
| 1377 | |
| 1378 | for (i = 0; i < hisi_hba->queue_count; i++) { |
| 1379 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
| 1380 | struct hisi_sas_dq *dq = &hisi_hba->dq[i]; |
| 1381 | |
| 1382 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 1383 | memset(hisi_hba->cmd_hdr[i], 0, s); |
| 1384 | dq->wr_point = 0; |
| 1385 | |
| 1386 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 1387 | memset(hisi_hba->complete_hdr[i], 0, s); |
| 1388 | cq->rd_point = 0; |
| 1389 | } |
| 1390 | |
| 1391 | s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy; |
| 1392 | memset(hisi_hba->initial_fis, 0, s); |
| 1393 | |
| 1394 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
| 1395 | memset(hisi_hba->iost, 0, s); |
| 1396 | |
| 1397 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
| 1398 | memset(hisi_hba->breakpoint, 0, s); |
| 1399 | |
| 1400 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
| 1401 | memset(hisi_hba->sata_breakpoint, 0, s); |
| 1402 | } |
| 1403 | EXPORT_SYMBOL_GPL(hisi_sas_init_mem); |
| 1404 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1405 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
| 1406 | { |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1407 | struct platform_device *pdev = hisi_hba->pdev; |
| 1408 | struct device *dev = &pdev->dev; |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1409 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1410 | |
John Garry | fa42d80 | 2015-11-18 00:50:43 +0800 | [diff] [blame] | 1411 | spin_lock_init(&hisi_hba->lock); |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 1412 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 1413 | hisi_sas_phy_init(hisi_hba, i); |
| 1414 | hisi_hba->port[i].port_attached = 0; |
| 1415 | hisi_hba->port[i].id = -1; |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 1416 | } |
| 1417 | |
John Garry | af740db | 2015-11-18 00:50:41 +0800 | [diff] [blame] | 1418 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
| 1419 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; |
| 1420 | hisi_hba->devices[i].device_id = i; |
| 1421 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; |
| 1422 | } |
| 1423 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1424 | for (i = 0; i < hisi_hba->queue_count; i++) { |
John Garry | 9101a07 | 2015-11-18 00:50:37 +0800 | [diff] [blame] | 1425 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
John Garry | 4fde02a | 2016-09-06 23:36:12 +0800 | [diff] [blame] | 1426 | struct hisi_sas_dq *dq = &hisi_hba->dq[i]; |
John Garry | 9101a07 | 2015-11-18 00:50:37 +0800 | [diff] [blame] | 1427 | |
| 1428 | /* Completion queue structure */ |
| 1429 | cq->id = i; |
| 1430 | cq->hisi_hba = hisi_hba; |
| 1431 | |
John Garry | 4fde02a | 2016-09-06 23:36:12 +0800 | [diff] [blame] | 1432 | /* Delivery queue structure */ |
| 1433 | dq->id = i; |
| 1434 | dq->hisi_hba = hisi_hba; |
| 1435 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1436 | /* Delivery queue */ |
| 1437 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 1438 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, |
| 1439 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); |
| 1440 | if (!hisi_hba->cmd_hdr[i]) |
| 1441 | goto err_out; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1442 | |
| 1443 | /* Completion queue */ |
| 1444 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 1445 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, |
| 1446 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); |
| 1447 | if (!hisi_hba->complete_hdr[i]) |
| 1448 | goto err_out; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1449 | } |
| 1450 | |
| 1451 | s = HISI_SAS_STATUS_BUF_SZ; |
| 1452 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", |
| 1453 | dev, s, 16, 0); |
| 1454 | if (!hisi_hba->status_buffer_pool) |
| 1455 | goto err_out; |
| 1456 | |
| 1457 | s = HISI_SAS_COMMAND_TABLE_SZ; |
| 1458 | hisi_hba->command_table_pool = dma_pool_create("command_table", |
| 1459 | dev, s, 16, 0); |
| 1460 | if (!hisi_hba->command_table_pool) |
| 1461 | goto err_out; |
| 1462 | |
| 1463 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); |
| 1464 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, |
| 1465 | GFP_KERNEL); |
| 1466 | if (!hisi_hba->itct) |
| 1467 | goto err_out; |
| 1468 | |
| 1469 | memset(hisi_hba->itct, 0, s); |
| 1470 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1471 | hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1472 | sizeof(struct hisi_sas_slot), |
| 1473 | GFP_KERNEL); |
| 1474 | if (!hisi_hba->slot_info) |
| 1475 | goto err_out; |
| 1476 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1477 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1478 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
| 1479 | GFP_KERNEL); |
| 1480 | if (!hisi_hba->iost) |
| 1481 | goto err_out; |
| 1482 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1483 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1484 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
| 1485 | &hisi_hba->breakpoint_dma, GFP_KERNEL); |
| 1486 | if (!hisi_hba->breakpoint) |
| 1487 | goto err_out; |
| 1488 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1489 | hisi_hba->slot_index_count = max_command_entries; |
John Garry | 433f569 | 2016-09-06 23:36:15 +0800 | [diff] [blame] | 1490 | s = hisi_hba->slot_index_count / BITS_PER_BYTE; |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 1491 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); |
| 1492 | if (!hisi_hba->slot_index_tags) |
| 1493 | goto err_out; |
| 1494 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1495 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
| 1496 | sizeof(struct hisi_sas_sge_page), 16, 0); |
| 1497 | if (!hisi_hba->sge_page_pool) |
| 1498 | goto err_out; |
| 1499 | |
| 1500 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; |
| 1501 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, |
| 1502 | &hisi_hba->initial_fis_dma, GFP_KERNEL); |
| 1503 | if (!hisi_hba->initial_fis) |
| 1504 | goto err_out; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1505 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1506 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1507 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
| 1508 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); |
| 1509 | if (!hisi_hba->sata_breakpoint) |
| 1510 | goto err_out; |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 1511 | hisi_sas_init_mem(hisi_hba); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1512 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 1513 | hisi_sas_slot_index_init(hisi_hba); |
| 1514 | |
John Garry | 7e9080e | 2015-11-18 00:50:40 +0800 | [diff] [blame] | 1515 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
| 1516 | if (!hisi_hba->wq) { |
| 1517 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); |
| 1518 | goto err_out; |
| 1519 | } |
| 1520 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1521 | return 0; |
| 1522 | err_out: |
| 1523 | return -ENOMEM; |
| 1524 | } |
| 1525 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1526 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
| 1527 | { |
| 1528 | struct device *dev = &hisi_hba->pdev->dev; |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1529 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1530 | |
| 1531 | for (i = 0; i < hisi_hba->queue_count; i++) { |
| 1532 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 1533 | if (hisi_hba->cmd_hdr[i]) |
| 1534 | dma_free_coherent(dev, s, |
| 1535 | hisi_hba->cmd_hdr[i], |
| 1536 | hisi_hba->cmd_hdr_dma[i]); |
| 1537 | |
| 1538 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 1539 | if (hisi_hba->complete_hdr[i]) |
| 1540 | dma_free_coherent(dev, s, |
| 1541 | hisi_hba->complete_hdr[i], |
| 1542 | hisi_hba->complete_hdr_dma[i]); |
| 1543 | } |
| 1544 | |
| 1545 | dma_pool_destroy(hisi_hba->status_buffer_pool); |
| 1546 | dma_pool_destroy(hisi_hba->command_table_pool); |
| 1547 | dma_pool_destroy(hisi_hba->sge_page_pool); |
| 1548 | |
| 1549 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); |
| 1550 | if (hisi_hba->itct) |
| 1551 | dma_free_coherent(dev, s, |
| 1552 | hisi_hba->itct, hisi_hba->itct_dma); |
| 1553 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1554 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1555 | if (hisi_hba->iost) |
| 1556 | dma_free_coherent(dev, s, |
| 1557 | hisi_hba->iost, hisi_hba->iost_dma); |
| 1558 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1559 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1560 | if (hisi_hba->breakpoint) |
| 1561 | dma_free_coherent(dev, s, |
| 1562 | hisi_hba->breakpoint, |
| 1563 | hisi_hba->breakpoint_dma); |
| 1564 | |
| 1565 | |
| 1566 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; |
| 1567 | if (hisi_hba->initial_fis) |
| 1568 | dma_free_coherent(dev, s, |
| 1569 | hisi_hba->initial_fis, |
| 1570 | hisi_hba->initial_fis_dma); |
| 1571 | |
John Garry | a8d547b | 2016-01-26 02:47:03 +0800 | [diff] [blame] | 1572 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1573 | if (hisi_hba->sata_breakpoint) |
| 1574 | dma_free_coherent(dev, s, |
| 1575 | hisi_hba->sata_breakpoint, |
| 1576 | hisi_hba->sata_breakpoint_dma); |
| 1577 | |
John Garry | 7e9080e | 2015-11-18 00:50:40 +0800 | [diff] [blame] | 1578 | if (hisi_hba->wq) |
| 1579 | destroy_workqueue(hisi_hba->wq); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1580 | } |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1581 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 1582 | static void hisi_sas_rst_work_handler(struct work_struct *work) |
| 1583 | { |
| 1584 | struct hisi_hba *hisi_hba = |
| 1585 | container_of(work, struct hisi_hba, rst_work); |
| 1586 | |
| 1587 | hisi_sas_controller_reset(hisi_hba); |
| 1588 | } |
| 1589 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1590 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
| 1591 | const struct hisi_sas_hw *hw) |
| 1592 | { |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1593 | struct resource *res; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1594 | struct Scsi_Host *shost; |
| 1595 | struct hisi_hba *hisi_hba; |
| 1596 | struct device *dev = &pdev->dev; |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1597 | struct device_node *np = pdev->dev.of_node; |
John Garry | 3bc45af | 2016-10-04 19:11:11 +0800 | [diff] [blame] | 1598 | struct clk *refclk; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1599 | |
| 1600 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1601 | if (!shost) { |
| 1602 | dev_err(dev, "scsi host alloc failed\n"); |
| 1603 | return NULL; |
| 1604 | } |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1605 | hisi_hba = shost_priv(shost); |
| 1606 | |
Xiang Chen | 06ec0fb | 2017-03-23 01:25:18 +0800 | [diff] [blame] | 1607 | INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler); |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1608 | hisi_hba->hw = hw; |
| 1609 | hisi_hba->pdev = pdev; |
| 1610 | hisi_hba->shost = shost; |
| 1611 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; |
| 1612 | |
John Garry | fa42d80 | 2015-11-18 00:50:43 +0800 | [diff] [blame] | 1613 | init_timer(&hisi_hba->timer); |
| 1614 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1615 | if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, |
| 1616 | SAS_ADDR_SIZE)) |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1617 | goto err_out; |
| 1618 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1619 | if (np) { |
| 1620 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, |
| 1621 | "hisilicon,sas-syscon"); |
| 1622 | if (IS_ERR(hisi_hba->ctrl)) |
| 1623 | goto err_out; |
| 1624 | |
| 1625 | if (device_property_read_u32(dev, "ctrl-reset-reg", |
| 1626 | &hisi_hba->ctrl_reset_reg)) |
| 1627 | goto err_out; |
| 1628 | |
| 1629 | if (device_property_read_u32(dev, "ctrl-reset-sts-reg", |
| 1630 | &hisi_hba->ctrl_reset_sts_reg)) |
| 1631 | goto err_out; |
| 1632 | |
| 1633 | if (device_property_read_u32(dev, "ctrl-clock-ena-reg", |
| 1634 | &hisi_hba->ctrl_clock_ena_reg)) |
| 1635 | goto err_out; |
| 1636 | } |
| 1637 | |
John Garry | 3bc45af | 2016-10-04 19:11:11 +0800 | [diff] [blame] | 1638 | refclk = devm_clk_get(&pdev->dev, NULL); |
| 1639 | if (IS_ERR(refclk)) |
John Garry | 87e287c | 2017-01-20 20:45:20 +0800 | [diff] [blame] | 1640 | dev_dbg(dev, "no ref clk property\n"); |
John Garry | 3bc45af | 2016-10-04 19:11:11 +0800 | [diff] [blame] | 1641 | else |
| 1642 | hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000; |
| 1643 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1644 | if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1645 | goto err_out; |
| 1646 | |
John Garry | 4d558c7 | 2016-02-04 02:26:08 +0800 | [diff] [blame] | 1647 | if (device_property_read_u32(dev, "queue-count", |
| 1648 | &hisi_hba->queue_count)) |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1649 | goto err_out; |
| 1650 | |
John Garry | a6f2c7f | 2016-09-06 23:36:19 +0800 | [diff] [blame] | 1651 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && |
| 1652 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { |
| 1653 | dev_err(dev, "No usable DMA addressing method\n"); |
| 1654 | goto err_out; |
| 1655 | } |
| 1656 | |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 1657 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1658 | hisi_hba->regs = devm_ioremap_resource(dev, res); |
| 1659 | if (IS_ERR(hisi_hba->regs)) |
| 1660 | goto err_out; |
| 1661 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1662 | if (hisi_sas_alloc(hisi_hba, shost)) { |
| 1663 | hisi_sas_free(hisi_hba); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1664 | goto err_out; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1665 | } |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 1666 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1667 | return shost; |
| 1668 | err_out: |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1669 | kfree(shost); |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1670 | dev_err(dev, "shost alloc failed\n"); |
| 1671 | return NULL; |
| 1672 | } |
| 1673 | |
John Garry | 5d74242 | 2015-11-18 00:50:38 +0800 | [diff] [blame] | 1674 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
| 1675 | { |
| 1676 | int i; |
| 1677 | |
| 1678 | for (i = 0; i < hisi_hba->n_phy; i++) |
| 1679 | memcpy(&hisi_hba->phy[i].dev_sas_addr, |
| 1680 | hisi_hba->sas_addr, |
| 1681 | SAS_ADDR_SIZE); |
| 1682 | } |
| 1683 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1684 | int hisi_sas_probe(struct platform_device *pdev, |
| 1685 | const struct hisi_sas_hw *hw) |
| 1686 | { |
| 1687 | struct Scsi_Host *shost; |
| 1688 | struct hisi_hba *hisi_hba; |
| 1689 | struct device *dev = &pdev->dev; |
| 1690 | struct asd_sas_phy **arr_phy; |
| 1691 | struct asd_sas_port **arr_port; |
| 1692 | struct sas_ha_struct *sha; |
| 1693 | int rc, phy_nr, port_nr, i; |
| 1694 | |
| 1695 | shost = hisi_sas_shost_alloc(pdev, hw); |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1696 | if (!shost) |
| 1697 | return -ENOMEM; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1698 | |
| 1699 | sha = SHOST_TO_SAS_HA(shost); |
| 1700 | hisi_hba = shost_priv(shost); |
| 1701 | platform_set_drvdata(pdev, sha); |
John Garry | 50cb916 | 2015-11-18 00:50:39 +0800 | [diff] [blame] | 1702 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1703 | phy_nr = port_nr = hisi_hba->n_phy; |
| 1704 | |
| 1705 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); |
| 1706 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1707 | if (!arr_phy || !arr_port) { |
| 1708 | rc = -ENOMEM; |
| 1709 | goto err_out_ha; |
| 1710 | } |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1711 | |
| 1712 | sha->sas_phy = arr_phy; |
| 1713 | sha->sas_port = arr_port; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1714 | sha->lldd_ha = hisi_hba; |
| 1715 | |
| 1716 | shost->transportt = hisi_sas_stt; |
| 1717 | shost->max_id = HISI_SAS_MAX_DEVICES; |
| 1718 | shost->max_lun = ~0; |
| 1719 | shost->max_channel = 1; |
| 1720 | shost->max_cmd_len = 16; |
| 1721 | 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] | 1722 | shost->can_queue = hisi_hba->hw->max_command_entries; |
| 1723 | shost->cmd_per_lun = hisi_hba->hw->max_command_entries; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1724 | |
| 1725 | sha->sas_ha_name = DRV_NAME; |
| 1726 | sha->dev = &hisi_hba->pdev->dev; |
| 1727 | sha->lldd_module = THIS_MODULE; |
| 1728 | sha->sas_addr = &hisi_hba->sas_addr[0]; |
| 1729 | sha->num_phys = hisi_hba->n_phy; |
| 1730 | sha->core.shost = hisi_hba->shost; |
| 1731 | |
| 1732 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 1733 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; |
| 1734 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; |
| 1735 | } |
| 1736 | |
John Garry | 5d74242 | 2015-11-18 00:50:38 +0800 | [diff] [blame] | 1737 | hisi_sas_init_add(hisi_hba); |
| 1738 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1739 | rc = scsi_add_host(shost, &pdev->dev); |
| 1740 | if (rc) |
| 1741 | goto err_out_ha; |
| 1742 | |
| 1743 | rc = sas_register_ha(sha); |
| 1744 | if (rc) |
| 1745 | goto err_out_register_ha; |
| 1746 | |
Xiang Chen | 0757f04 | 2017-01-20 20:45:23 +0800 | [diff] [blame] | 1747 | rc = hisi_hba->hw->hw_init(hisi_hba); |
| 1748 | if (rc) |
| 1749 | goto err_out_register_ha; |
| 1750 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1751 | scsi_scan_host(shost); |
| 1752 | |
| 1753 | return 0; |
| 1754 | |
| 1755 | err_out_register_ha: |
| 1756 | scsi_remove_host(shost); |
| 1757 | err_out_ha: |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1758 | hisi_sas_free(hisi_hba); |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 1759 | kfree(shost); |
| 1760 | return rc; |
| 1761 | } |
| 1762 | EXPORT_SYMBOL_GPL(hisi_sas_probe); |
| 1763 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1764 | int hisi_sas_remove(struct platform_device *pdev) |
| 1765 | { |
| 1766 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); |
| 1767 | struct hisi_hba *hisi_hba = sha->lldd_ha; |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1768 | struct Scsi_Host *shost = sha->core.shost; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1769 | |
| 1770 | scsi_remove_host(sha->core.shost); |
| 1771 | sas_unregister_ha(sha); |
| 1772 | sas_remove_host(sha->core.shost); |
| 1773 | |
| 1774 | hisi_sas_free(hisi_hba); |
Xiaofei Tan | d37a008 | 2016-11-29 23:45:57 +0800 | [diff] [blame] | 1775 | kfree(shost); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 1776 | return 0; |
| 1777 | } |
| 1778 | EXPORT_SYMBOL_GPL(hisi_sas_remove); |
| 1779 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1780 | static __init int hisi_sas_init(void) |
| 1781 | { |
| 1782 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); |
| 1783 | |
| 1784 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); |
| 1785 | if (!hisi_sas_stt) |
| 1786 | return -ENOMEM; |
| 1787 | |
| 1788 | return 0; |
| 1789 | } |
| 1790 | |
| 1791 | static __exit void hisi_sas_exit(void) |
| 1792 | { |
| 1793 | sas_release_transport(hisi_sas_stt); |
| 1794 | } |
| 1795 | |
| 1796 | module_init(hisi_sas_init); |
| 1797 | module_exit(hisi_sas_exit); |
| 1798 | |
| 1799 | MODULE_VERSION(DRV_VERSION); |
| 1800 | MODULE_LICENSE("GPL"); |
| 1801 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); |
| 1802 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); |
| 1803 | MODULE_ALIAS("platform:" DRV_NAME); |