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 | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 15 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
| 16 | { |
| 17 | void *bitmap = hisi_hba->slot_index_tags; |
| 18 | |
| 19 | clear_bit(slot_idx, bitmap); |
| 20 | } |
| 21 | |
| 22 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
| 23 | { |
| 24 | int i; |
| 25 | |
| 26 | for (i = 0; i < hisi_hba->slot_index_count; ++i) |
| 27 | hisi_sas_slot_index_clear(hisi_hba, i); |
| 28 | } |
| 29 | |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame^] | 30 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
| 31 | { |
| 32 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 33 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 34 | struct sas_ha_struct *sas_ha; |
| 35 | |
| 36 | if (!phy->phy_attached) |
| 37 | return; |
| 38 | |
| 39 | sas_ha = &hisi_hba->sha; |
| 40 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); |
| 41 | |
| 42 | if (sas_phy->phy) { |
| 43 | struct sas_phy *sphy = sas_phy->phy; |
| 44 | |
| 45 | sphy->negotiated_linkrate = sas_phy->linkrate; |
| 46 | sphy->minimum_linkrate = phy->minimum_linkrate; |
| 47 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; |
| 48 | sphy->maximum_linkrate = phy->maximum_linkrate; |
| 49 | } |
| 50 | |
| 51 | if (phy->phy_type & PORT_TYPE_SAS) { |
| 52 | struct sas_identify_frame *id; |
| 53 | |
| 54 | id = (struct sas_identify_frame *)phy->frame_rcvd; |
| 55 | id->dev_type = phy->identify.device_type; |
| 56 | id->initiator_bits = SAS_PROTOCOL_ALL; |
| 57 | id->target_bits = phy->identify.target_port_protocols; |
| 58 | } else if (phy->phy_type & PORT_TYPE_SATA) { |
| 59 | /*Nothing*/ |
| 60 | } |
| 61 | |
| 62 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; |
| 63 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); |
| 64 | } |
| 65 | |
| 66 | static void hisi_sas_phyup_work(struct work_struct *work) |
| 67 | { |
| 68 | struct hisi_sas_phy *phy = |
| 69 | container_of(work, struct hisi_sas_phy, phyup_ws); |
| 70 | struct hisi_hba *hisi_hba = phy->hisi_hba; |
| 71 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 72 | int phy_no = sas_phy->id; |
| 73 | |
| 74 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ |
| 75 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); |
| 76 | } |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 77 | |
| 78 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) |
| 79 | { |
| 80 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; |
| 81 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
| 82 | |
| 83 | phy->hisi_hba = hisi_hba; |
| 84 | phy->port = NULL; |
| 85 | init_timer(&phy->timer); |
| 86 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; |
| 87 | sas_phy->class = SAS; |
| 88 | sas_phy->iproto = SAS_PROTOCOL_ALL; |
| 89 | sas_phy->tproto = 0; |
| 90 | sas_phy->type = PHY_TYPE_PHYSICAL; |
| 91 | sas_phy->role = PHY_ROLE_INITIATOR; |
| 92 | sas_phy->oob_mode = OOB_NOT_CONNECTED; |
| 93 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; |
| 94 | sas_phy->id = phy_no; |
| 95 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; |
| 96 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; |
| 97 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; |
| 98 | sas_phy->lldd_phy = phy; |
John Garry | 6613992 | 2015-11-18 00:50:48 +0800 | [diff] [blame^] | 99 | |
| 100 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 101 | } |
| 102 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 103 | static struct scsi_transport_template *hisi_sas_stt; |
| 104 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 105 | static struct scsi_host_template hisi_sas_sht = { |
| 106 | .module = THIS_MODULE, |
| 107 | .name = DRV_NAME, |
| 108 | .queuecommand = sas_queuecommand, |
| 109 | .target_alloc = sas_target_alloc, |
| 110 | .slave_configure = sas_slave_configure, |
| 111 | .change_queue_depth = sas_change_queue_depth, |
| 112 | .bios_param = sas_bios_param, |
| 113 | .can_queue = 1, |
| 114 | .this_id = -1, |
| 115 | .sg_tablesize = SG_ALL, |
| 116 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, |
| 117 | .use_clustering = ENABLE_CLUSTERING, |
| 118 | .eh_device_reset_handler = sas_eh_device_reset_handler, |
| 119 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, |
| 120 | .target_destroy = sas_target_destroy, |
| 121 | .ioctl = sas_ioctl, |
| 122 | }; |
| 123 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 124 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
| 125 | }; |
| 126 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 127 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
| 128 | { |
| 129 | int i, s; |
| 130 | struct platform_device *pdev = hisi_hba->pdev; |
| 131 | struct device *dev = &pdev->dev; |
| 132 | |
John Garry | fa42d80 | 2015-11-18 00:50:43 +0800 | [diff] [blame] | 133 | spin_lock_init(&hisi_hba->lock); |
John Garry | 976867e | 2015-11-18 00:50:42 +0800 | [diff] [blame] | 134 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 135 | hisi_sas_phy_init(hisi_hba, i); |
| 136 | hisi_hba->port[i].port_attached = 0; |
| 137 | hisi_hba->port[i].id = -1; |
| 138 | INIT_LIST_HEAD(&hisi_hba->port[i].list); |
| 139 | } |
| 140 | |
John Garry | af740db | 2015-11-18 00:50:41 +0800 | [diff] [blame] | 141 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
| 142 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; |
| 143 | hisi_hba->devices[i].device_id = i; |
| 144 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; |
| 145 | } |
| 146 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 147 | for (i = 0; i < hisi_hba->queue_count; i++) { |
John Garry | 9101a07 | 2015-11-18 00:50:37 +0800 | [diff] [blame] | 148 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
| 149 | |
| 150 | /* Completion queue structure */ |
| 151 | cq->id = i; |
| 152 | cq->hisi_hba = hisi_hba; |
| 153 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 154 | /* Delivery queue */ |
| 155 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 156 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, |
| 157 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); |
| 158 | if (!hisi_hba->cmd_hdr[i]) |
| 159 | goto err_out; |
| 160 | memset(hisi_hba->cmd_hdr[i], 0, s); |
| 161 | |
| 162 | /* Completion queue */ |
| 163 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 164 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, |
| 165 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); |
| 166 | if (!hisi_hba->complete_hdr[i]) |
| 167 | goto err_out; |
| 168 | memset(hisi_hba->complete_hdr[i], 0, s); |
| 169 | } |
| 170 | |
| 171 | s = HISI_SAS_STATUS_BUF_SZ; |
| 172 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", |
| 173 | dev, s, 16, 0); |
| 174 | if (!hisi_hba->status_buffer_pool) |
| 175 | goto err_out; |
| 176 | |
| 177 | s = HISI_SAS_COMMAND_TABLE_SZ; |
| 178 | hisi_hba->command_table_pool = dma_pool_create("command_table", |
| 179 | dev, s, 16, 0); |
| 180 | if (!hisi_hba->command_table_pool) |
| 181 | goto err_out; |
| 182 | |
| 183 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); |
| 184 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, |
| 185 | GFP_KERNEL); |
| 186 | if (!hisi_hba->itct) |
| 187 | goto err_out; |
| 188 | |
| 189 | memset(hisi_hba->itct, 0, s); |
| 190 | |
| 191 | hisi_hba->slot_info = devm_kcalloc(dev, HISI_SAS_COMMAND_ENTRIES, |
| 192 | sizeof(struct hisi_sas_slot), |
| 193 | GFP_KERNEL); |
| 194 | if (!hisi_hba->slot_info) |
| 195 | goto err_out; |
| 196 | |
| 197 | s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost); |
| 198 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
| 199 | GFP_KERNEL); |
| 200 | if (!hisi_hba->iost) |
| 201 | goto err_out; |
| 202 | |
| 203 | memset(hisi_hba->iost, 0, s); |
| 204 | |
| 205 | s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint); |
| 206 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
| 207 | &hisi_hba->breakpoint_dma, GFP_KERNEL); |
| 208 | if (!hisi_hba->breakpoint) |
| 209 | goto err_out; |
| 210 | |
| 211 | memset(hisi_hba->breakpoint, 0, s); |
| 212 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 213 | hisi_hba->slot_index_count = HISI_SAS_COMMAND_ENTRIES; |
| 214 | s = hisi_hba->slot_index_count / sizeof(unsigned long); |
| 215 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); |
| 216 | if (!hisi_hba->slot_index_tags) |
| 217 | goto err_out; |
| 218 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 219 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
| 220 | sizeof(struct hisi_sas_sge_page), 16, 0); |
| 221 | if (!hisi_hba->sge_page_pool) |
| 222 | goto err_out; |
| 223 | |
| 224 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; |
| 225 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, |
| 226 | &hisi_hba->initial_fis_dma, GFP_KERNEL); |
| 227 | if (!hisi_hba->initial_fis) |
| 228 | goto err_out; |
| 229 | memset(hisi_hba->initial_fis, 0, s); |
| 230 | |
| 231 | s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2; |
| 232 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
| 233 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); |
| 234 | if (!hisi_hba->sata_breakpoint) |
| 235 | goto err_out; |
| 236 | memset(hisi_hba->sata_breakpoint, 0, s); |
| 237 | |
John Garry | 257efd1 | 2015-11-18 00:50:36 +0800 | [diff] [blame] | 238 | hisi_sas_slot_index_init(hisi_hba); |
| 239 | |
John Garry | 7e9080e | 2015-11-18 00:50:40 +0800 | [diff] [blame] | 240 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
| 241 | if (!hisi_hba->wq) { |
| 242 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); |
| 243 | goto err_out; |
| 244 | } |
| 245 | |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 246 | return 0; |
| 247 | err_out: |
| 248 | return -ENOMEM; |
| 249 | } |
| 250 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 251 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
| 252 | { |
| 253 | struct device *dev = &hisi_hba->pdev->dev; |
| 254 | int i, s; |
| 255 | |
| 256 | for (i = 0; i < hisi_hba->queue_count; i++) { |
| 257 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; |
| 258 | if (hisi_hba->cmd_hdr[i]) |
| 259 | dma_free_coherent(dev, s, |
| 260 | hisi_hba->cmd_hdr[i], |
| 261 | hisi_hba->cmd_hdr_dma[i]); |
| 262 | |
| 263 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; |
| 264 | if (hisi_hba->complete_hdr[i]) |
| 265 | dma_free_coherent(dev, s, |
| 266 | hisi_hba->complete_hdr[i], |
| 267 | hisi_hba->complete_hdr_dma[i]); |
| 268 | } |
| 269 | |
| 270 | dma_pool_destroy(hisi_hba->status_buffer_pool); |
| 271 | dma_pool_destroy(hisi_hba->command_table_pool); |
| 272 | dma_pool_destroy(hisi_hba->sge_page_pool); |
| 273 | |
| 274 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); |
| 275 | if (hisi_hba->itct) |
| 276 | dma_free_coherent(dev, s, |
| 277 | hisi_hba->itct, hisi_hba->itct_dma); |
| 278 | |
| 279 | s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost); |
| 280 | if (hisi_hba->iost) |
| 281 | dma_free_coherent(dev, s, |
| 282 | hisi_hba->iost, hisi_hba->iost_dma); |
| 283 | |
| 284 | s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint); |
| 285 | if (hisi_hba->breakpoint) |
| 286 | dma_free_coherent(dev, s, |
| 287 | hisi_hba->breakpoint, |
| 288 | hisi_hba->breakpoint_dma); |
| 289 | |
| 290 | |
| 291 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; |
| 292 | if (hisi_hba->initial_fis) |
| 293 | dma_free_coherent(dev, s, |
| 294 | hisi_hba->initial_fis, |
| 295 | hisi_hba->initial_fis_dma); |
| 296 | |
| 297 | s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2; |
| 298 | if (hisi_hba->sata_breakpoint) |
| 299 | dma_free_coherent(dev, s, |
| 300 | hisi_hba->sata_breakpoint, |
| 301 | hisi_hba->sata_breakpoint_dma); |
| 302 | |
John Garry | 7e9080e | 2015-11-18 00:50:40 +0800 | [diff] [blame] | 303 | if (hisi_hba->wq) |
| 304 | destroy_workqueue(hisi_hba->wq); |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 305 | } |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 306 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 307 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
| 308 | const struct hisi_sas_hw *hw) |
| 309 | { |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 310 | struct resource *res; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 311 | struct Scsi_Host *shost; |
| 312 | struct hisi_hba *hisi_hba; |
| 313 | struct device *dev = &pdev->dev; |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 314 | struct device_node *np = pdev->dev.of_node; |
| 315 | struct property *sas_addr_prop; |
| 316 | int num; |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 317 | |
| 318 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); |
| 319 | if (!shost) |
| 320 | goto err_out; |
| 321 | hisi_hba = shost_priv(shost); |
| 322 | |
| 323 | hisi_hba->hw = hw; |
| 324 | hisi_hba->pdev = pdev; |
| 325 | hisi_hba->shost = shost; |
| 326 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; |
| 327 | |
John Garry | fa42d80 | 2015-11-18 00:50:43 +0800 | [diff] [blame] | 328 | init_timer(&hisi_hba->timer); |
| 329 | |
John Garry | e26b2f4 | 2015-11-18 00:50:32 +0800 | [diff] [blame] | 330 | sas_addr_prop = of_find_property(np, "sas-addr", NULL); |
| 331 | if (!sas_addr_prop || (sas_addr_prop->length != SAS_ADDR_SIZE)) |
| 332 | goto err_out; |
| 333 | memcpy(hisi_hba->sas_addr, sas_addr_prop->value, SAS_ADDR_SIZE); |
| 334 | |
| 335 | if (of_property_read_u32(np, "ctrl-reset-reg", |
| 336 | &hisi_hba->ctrl_reset_reg)) |
| 337 | goto err_out; |
| 338 | |
| 339 | if (of_property_read_u32(np, "ctrl-reset-sts-reg", |
| 340 | &hisi_hba->ctrl_reset_sts_reg)) |
| 341 | goto err_out; |
| 342 | |
| 343 | if (of_property_read_u32(np, "ctrl-clock-ena-reg", |
| 344 | &hisi_hba->ctrl_clock_ena_reg)) |
| 345 | goto err_out; |
| 346 | |
| 347 | if (of_property_read_u32(np, "phy-count", &hisi_hba->n_phy)) |
| 348 | goto err_out; |
| 349 | |
| 350 | if (of_property_read_u32(np, "queue-count", &hisi_hba->queue_count)) |
| 351 | goto err_out; |
| 352 | |
| 353 | num = of_irq_count(np); |
| 354 | hisi_hba->int_names = devm_kcalloc(dev, num, |
| 355 | HISI_SAS_NAME_LEN, |
| 356 | GFP_KERNEL); |
| 357 | if (!hisi_hba->int_names) |
| 358 | goto err_out; |
| 359 | |
| 360 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 361 | hisi_hba->regs = devm_ioremap_resource(dev, res); |
| 362 | if (IS_ERR(hisi_hba->regs)) |
| 363 | goto err_out; |
| 364 | |
| 365 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle( |
| 366 | np, "hisilicon,sas-syscon"); |
| 367 | if (IS_ERR(hisi_hba->ctrl)) |
| 368 | goto err_out; |
| 369 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 370 | if (hisi_sas_alloc(hisi_hba, shost)) { |
| 371 | hisi_sas_free(hisi_hba); |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 372 | goto err_out; |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 373 | } |
John Garry | 6be6de1 | 2015-11-18 00:50:34 +0800 | [diff] [blame] | 374 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 375 | return shost; |
| 376 | err_out: |
| 377 | dev_err(dev, "shost alloc failed\n"); |
| 378 | return NULL; |
| 379 | } |
| 380 | |
John Garry | 5d74242 | 2015-11-18 00:50:38 +0800 | [diff] [blame] | 381 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
| 382 | { |
| 383 | int i; |
| 384 | |
| 385 | for (i = 0; i < hisi_hba->n_phy; i++) |
| 386 | memcpy(&hisi_hba->phy[i].dev_sas_addr, |
| 387 | hisi_hba->sas_addr, |
| 388 | SAS_ADDR_SIZE); |
| 389 | } |
| 390 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 391 | int hisi_sas_probe(struct platform_device *pdev, |
| 392 | const struct hisi_sas_hw *hw) |
| 393 | { |
| 394 | struct Scsi_Host *shost; |
| 395 | struct hisi_hba *hisi_hba; |
| 396 | struct device *dev = &pdev->dev; |
| 397 | struct asd_sas_phy **arr_phy; |
| 398 | struct asd_sas_port **arr_port; |
| 399 | struct sas_ha_struct *sha; |
| 400 | int rc, phy_nr, port_nr, i; |
| 401 | |
| 402 | shost = hisi_sas_shost_alloc(pdev, hw); |
| 403 | if (!shost) { |
| 404 | rc = -ENOMEM; |
| 405 | goto err_out_ha; |
| 406 | } |
| 407 | |
| 408 | sha = SHOST_TO_SAS_HA(shost); |
| 409 | hisi_hba = shost_priv(shost); |
| 410 | platform_set_drvdata(pdev, sha); |
John Garry | 50cb916 | 2015-11-18 00:50:39 +0800 | [diff] [blame] | 411 | |
| 412 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && |
| 413 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { |
| 414 | dev_err(dev, "No usable DMA addressing method\n"); |
| 415 | rc = -EIO; |
| 416 | goto err_out_ha; |
| 417 | } |
| 418 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 419 | phy_nr = port_nr = hisi_hba->n_phy; |
| 420 | |
| 421 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); |
| 422 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); |
| 423 | if (!arr_phy || !arr_port) |
| 424 | return -ENOMEM; |
| 425 | |
| 426 | sha->sas_phy = arr_phy; |
| 427 | sha->sas_port = arr_port; |
| 428 | sha->core.shost = shost; |
| 429 | sha->lldd_ha = hisi_hba; |
| 430 | |
| 431 | shost->transportt = hisi_sas_stt; |
| 432 | shost->max_id = HISI_SAS_MAX_DEVICES; |
| 433 | shost->max_lun = ~0; |
| 434 | shost->max_channel = 1; |
| 435 | shost->max_cmd_len = 16; |
| 436 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); |
| 437 | shost->can_queue = HISI_SAS_COMMAND_ENTRIES; |
| 438 | shost->cmd_per_lun = HISI_SAS_COMMAND_ENTRIES; |
| 439 | |
| 440 | sha->sas_ha_name = DRV_NAME; |
| 441 | sha->dev = &hisi_hba->pdev->dev; |
| 442 | sha->lldd_module = THIS_MODULE; |
| 443 | sha->sas_addr = &hisi_hba->sas_addr[0]; |
| 444 | sha->num_phys = hisi_hba->n_phy; |
| 445 | sha->core.shost = hisi_hba->shost; |
| 446 | |
| 447 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 448 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; |
| 449 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; |
| 450 | } |
| 451 | |
John Garry | 5d74242 | 2015-11-18 00:50:38 +0800 | [diff] [blame] | 452 | hisi_sas_init_add(hisi_hba); |
| 453 | |
John Garry | 8ff1d57 | 2015-11-18 00:50:46 +0800 | [diff] [blame] | 454 | rc = hisi_hba->hw->hw_init(hisi_hba); |
| 455 | if (rc) |
| 456 | goto err_out_ha; |
| 457 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame] | 458 | rc = scsi_add_host(shost, &pdev->dev); |
| 459 | if (rc) |
| 460 | goto err_out_ha; |
| 461 | |
| 462 | rc = sas_register_ha(sha); |
| 463 | if (rc) |
| 464 | goto err_out_register_ha; |
| 465 | |
| 466 | scsi_scan_host(shost); |
| 467 | |
| 468 | return 0; |
| 469 | |
| 470 | err_out_register_ha: |
| 471 | scsi_remove_host(shost); |
| 472 | err_out_ha: |
| 473 | kfree(shost); |
| 474 | return rc; |
| 475 | } |
| 476 | EXPORT_SYMBOL_GPL(hisi_sas_probe); |
| 477 | |
John Garry | 89d5332 | 2015-11-18 00:50:35 +0800 | [diff] [blame] | 478 | int hisi_sas_remove(struct platform_device *pdev) |
| 479 | { |
| 480 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); |
| 481 | struct hisi_hba *hisi_hba = sha->lldd_ha; |
| 482 | |
| 483 | scsi_remove_host(sha->core.shost); |
| 484 | sas_unregister_ha(sha); |
| 485 | sas_remove_host(sha->core.shost); |
| 486 | |
| 487 | hisi_sas_free(hisi_hba); |
| 488 | return 0; |
| 489 | } |
| 490 | EXPORT_SYMBOL_GPL(hisi_sas_remove); |
| 491 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 492 | static __init int hisi_sas_init(void) |
| 493 | { |
| 494 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); |
| 495 | |
| 496 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); |
| 497 | if (!hisi_sas_stt) |
| 498 | return -ENOMEM; |
| 499 | |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | static __exit void hisi_sas_exit(void) |
| 504 | { |
| 505 | sas_release_transport(hisi_sas_stt); |
| 506 | } |
| 507 | |
| 508 | module_init(hisi_sas_init); |
| 509 | module_exit(hisi_sas_exit); |
| 510 | |
| 511 | MODULE_VERSION(DRV_VERSION); |
| 512 | MODULE_LICENSE("GPL"); |
| 513 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); |
| 514 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); |
| 515 | MODULE_ALIAS("platform:" DRV_NAME); |