This source file includes following definitions.
- hisi_sas_get_ata_protocol
- hisi_sas_sata_done
- hisi_sas_get_prog_phy_linkrate_mask
- dev_to_hisi_hba
- to_hisi_sas_port
- hisi_sas_stop_phys
- hisi_sas_slot_index_clear
- hisi_sas_slot_index_free
- hisi_sas_slot_index_set
- hisi_sas_slot_index_alloc
- hisi_sas_slot_index_init
- hisi_sas_slot_task_free
- hisi_sas_task_prep_smp
- hisi_sas_task_prep_ssp
- hisi_sas_task_prep_ata
- hisi_sas_task_prep_abort
- hisi_sas_dma_unmap
- hisi_sas_dma_map
- hisi_sas_dif_dma_unmap
- hisi_sas_dif_dma_map
- hisi_sas_task_prep
- hisi_sas_task_exec
- hisi_sas_bytes_dmaed
- hisi_sas_alloc_dev
- hisi_sas_init_device
- hisi_sas_dev_found
- hisi_sas_slave_configure
- hisi_sas_scan_start
- hisi_sas_scan_finished
- hisi_sas_phyup_work
- hisi_sas_linkreset_work
- hisi_sas_notify_phy_event
- hisi_sas_wait_phyup_timedout
- hisi_sas_phy_oob_ready
- hisi_sas_phy_init
- hisi_sas_phy_enable
- hisi_sas_port_notify_formed
- hisi_sas_do_release_task
- hisi_sas_release_task
- hisi_sas_release_tasks
- hisi_sas_dereg_device
- hisi_sas_dev_gone
- hisi_sas_queue_command
- hisi_sas_phy_set_linkrate
- hisi_sas_control_phy
- hisi_sas_task_done
- hisi_sas_tmf_timedout
- hisi_sas_exec_internal_tmf_task
- hisi_sas_fill_ata_reset_cmd
- hisi_sas_softreset_ata_disk
- hisi_sas_debug_issue_ssp_tmf
- hisi_sas_refresh_port_id
- hisi_sas_rescan_topology
- hisi_sas_reset_init_all_devices
- hisi_sas_send_ata_reset_each_phy
- hisi_sas_terminate_stp_reject
- hisi_sas_controller_reset_prepare
- hisi_sas_controller_reset_done
- hisi_sas_controller_reset
- hisi_sas_abort_task
- hisi_sas_abort_task_set
- hisi_sas_clear_aca
- hisi_sas_debug_I_T_nexus_reset
- hisi_sas_I_T_nexus_reset
- hisi_sas_lu_reset
- hisi_sas_clear_nexus_ha
- hisi_sas_query_task
- hisi_sas_internal_abort_task_exec
- _hisi_sas_internal_task_abort
- hisi_sas_internal_task_abort
- hisi_sas_port_formed
- hisi_sas_write_gpio
- hisi_sas_phy_disconnected
- hisi_sas_phy_down
- hisi_sas_kill_tasklets
- hisi_sas_host_reset
- hisi_sas_init_mem
- hisi_sas_alloc
- hisi_sas_free
- hisi_sas_rst_work_handler
- hisi_sas_sync_rst_work_handler
- hisi_sas_get_fw_info
- hisi_sas_shost_alloc
- hisi_sas_probe
- hisi_sas_debugfs_snapshot_cq_reg
- hisi_sas_debugfs_snapshot_dq_reg
- hisi_sas_debugfs_snapshot_port_reg
- hisi_sas_debugfs_snapshot_global_reg
- hisi_sas_debugfs_snapshot_axi_reg
- hisi_sas_debugfs_snapshot_ras_reg
- hisi_sas_debugfs_snapshot_itct_reg
- hisi_sas_debugfs_snapshot_iost_reg
- hisi_sas_debugfs_to_reg_name
- hisi_sas_debugfs_print_reg
- hisi_sas_debugfs_global_show
- hisi_sas_debugfs_global_open
- hisi_sas_debugfs_axi_show
- hisi_sas_debugfs_axi_open
- hisi_sas_debugfs_ras_show
- hisi_sas_debugfs_ras_open
- hisi_sas_debugfs_port_show
- hisi_sas_debugfs_port_open
- hisi_sas_show_row_64
- hisi_sas_show_row_32
- hisi_sas_cq_show_slot
- hisi_sas_debugfs_cq_show
- hisi_sas_debugfs_cq_open
- hisi_sas_dq_show_slot
- hisi_sas_debugfs_dq_show
- hisi_sas_debugfs_dq_open
- hisi_sas_debugfs_iost_show
- hisi_sas_debugfs_iost_open
- hisi_sas_debugfs_iost_cache_show
- hisi_sas_debugfs_iost_cache_open
- hisi_sas_debugfs_itct_show
- hisi_sas_debugfs_itct_open
- hisi_sas_debugfs_itct_cache_show
- hisi_sas_debugfs_itct_cache_open
- hisi_sas_debugfs_create_files
- hisi_sas_debugfs_snapshot_regs
- hisi_sas_debugfs_trigger_dump_write
- hisi_sas_debugfs_bist_linkrate_show
- hisi_sas_debugfs_bist_linkrate_write
- hisi_sas_debugfs_bist_linkrate_open
- hisi_sas_debugfs_bist_code_mode_show
- hisi_sas_debugfs_bist_code_mode_write
- hisi_sas_debugfs_bist_code_mode_open
- hisi_sas_debugfs_bist_phy_write
- hisi_sas_debugfs_bist_phy_show
- hisi_sas_debugfs_bist_phy_open
- hisi_sas_debugfs_bist_mode_show
- hisi_sas_debugfs_bist_mode_write
- hisi_sas_debugfs_bist_mode_open
- hisi_sas_debugfs_bist_enable_write
- hisi_sas_debugfs_bist_enable_show
- hisi_sas_debugfs_bist_enable_open
- hisi_sas_debugfs_work_handler
- hisi_sas_debugfs_release
- hisi_sas_debugfs_alloc
- hisi_sas_debugfs_bist_init
- hisi_sas_debugfs_init
- hisi_sas_debugfs_exit
- hisi_sas_remove
- hisi_sas_init
- hisi_sas_exit
1
2
3
4
5
6
7 #include "hisi_sas.h"
8 #define DRV_NAME "hisi_sas"
9
10 #define DEV_IS_GONE(dev) \
11 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
12
13 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
14 u8 *lun, struct hisi_sas_tmf_task *tmf);
15 static int
16 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
17 struct domain_device *device,
18 int abort_flag, int tag);
19 static int hisi_sas_softreset_ata_disk(struct domain_device *device);
20 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
21 void *funcdata);
22 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
23 struct domain_device *device);
24 static void hisi_sas_dev_gone(struct domain_device *device);
25
26 u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction)
27 {
28 switch (fis->command) {
29 case ATA_CMD_FPDMA_WRITE:
30 case ATA_CMD_FPDMA_READ:
31 case ATA_CMD_FPDMA_RECV:
32 case ATA_CMD_FPDMA_SEND:
33 case ATA_CMD_NCQ_NON_DATA:
34 return HISI_SAS_SATA_PROTOCOL_FPDMA;
35
36 case ATA_CMD_DOWNLOAD_MICRO:
37 case ATA_CMD_ID_ATA:
38 case ATA_CMD_PMP_READ:
39 case ATA_CMD_READ_LOG_EXT:
40 case ATA_CMD_PIO_READ:
41 case ATA_CMD_PIO_READ_EXT:
42 case ATA_CMD_PMP_WRITE:
43 case ATA_CMD_WRITE_LOG_EXT:
44 case ATA_CMD_PIO_WRITE:
45 case ATA_CMD_PIO_WRITE_EXT:
46 return HISI_SAS_SATA_PROTOCOL_PIO;
47
48 case ATA_CMD_DSM:
49 case ATA_CMD_DOWNLOAD_MICRO_DMA:
50 case ATA_CMD_PMP_READ_DMA:
51 case ATA_CMD_PMP_WRITE_DMA:
52 case ATA_CMD_READ:
53 case ATA_CMD_READ_EXT:
54 case ATA_CMD_READ_LOG_DMA_EXT:
55 case ATA_CMD_READ_STREAM_DMA_EXT:
56 case ATA_CMD_TRUSTED_RCV_DMA:
57 case ATA_CMD_TRUSTED_SND_DMA:
58 case ATA_CMD_WRITE:
59 case ATA_CMD_WRITE_EXT:
60 case ATA_CMD_WRITE_FUA_EXT:
61 case ATA_CMD_WRITE_QUEUED:
62 case ATA_CMD_WRITE_LOG_DMA_EXT:
63 case ATA_CMD_WRITE_STREAM_DMA_EXT:
64 case ATA_CMD_ZAC_MGMT_IN:
65 return HISI_SAS_SATA_PROTOCOL_DMA;
66
67 case ATA_CMD_CHK_POWER:
68 case ATA_CMD_DEV_RESET:
69 case ATA_CMD_EDD:
70 case ATA_CMD_FLUSH:
71 case ATA_CMD_FLUSH_EXT:
72 case ATA_CMD_VERIFY:
73 case ATA_CMD_VERIFY_EXT:
74 case ATA_CMD_SET_FEATURES:
75 case ATA_CMD_STANDBY:
76 case ATA_CMD_STANDBYNOW1:
77 case ATA_CMD_ZAC_MGMT_OUT:
78 return HISI_SAS_SATA_PROTOCOL_NONDATA;
79
80 case ATA_CMD_SET_MAX:
81 switch (fis->features) {
82 case ATA_SET_MAX_PASSWD:
83 case ATA_SET_MAX_LOCK:
84 return HISI_SAS_SATA_PROTOCOL_PIO;
85
86 case ATA_SET_MAX_PASSWD_DMA:
87 case ATA_SET_MAX_UNLOCK_DMA:
88 return HISI_SAS_SATA_PROTOCOL_DMA;
89
90 default:
91 return HISI_SAS_SATA_PROTOCOL_NONDATA;
92 }
93
94 default:
95 {
96 if (direction == DMA_NONE)
97 return HISI_SAS_SATA_PROTOCOL_NONDATA;
98 return HISI_SAS_SATA_PROTOCOL_PIO;
99 }
100 }
101 }
102 EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol);
103
104 void hisi_sas_sata_done(struct sas_task *task,
105 struct hisi_sas_slot *slot)
106 {
107 struct task_status_struct *ts = &task->task_status;
108 struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf;
109 struct hisi_sas_status_buffer *status_buf =
110 hisi_sas_status_buf_addr_mem(slot);
111 u8 *iu = &status_buf->iu[0];
112 struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu;
113
114 resp->frame_len = sizeof(struct dev_to_host_fis);
115 memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis));
116
117 ts->buf_valid_size = sizeof(*resp);
118 }
119 EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
120
121
122
123
124
125 u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max)
126 {
127 u8 rate = 0;
128 int i;
129
130 max -= SAS_LINK_RATE_1_5_GBPS;
131 for (i = 0; i <= max; i++)
132 rate |= 1 << (i * 2);
133 return rate;
134 }
135 EXPORT_SYMBOL_GPL(hisi_sas_get_prog_phy_linkrate_mask);
136
137 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
138 {
139 return device->port->ha->lldd_ha;
140 }
141
142 struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port)
143 {
144 return container_of(sas_port, struct hisi_sas_port, sas_port);
145 }
146 EXPORT_SYMBOL_GPL(to_hisi_sas_port);
147
148 void hisi_sas_stop_phys(struct hisi_hba *hisi_hba)
149 {
150 int phy_no;
151
152 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++)
153 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
154 }
155 EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
156
157 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
158 {
159 void *bitmap = hisi_hba->slot_index_tags;
160
161 clear_bit(slot_idx, bitmap);
162 }
163
164 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
165 {
166 unsigned long flags;
167
168 if (hisi_hba->hw->slot_index_alloc ||
169 slot_idx >= HISI_SAS_UNRESERVED_IPTT) {
170 spin_lock_irqsave(&hisi_hba->lock, flags);
171 hisi_sas_slot_index_clear(hisi_hba, slot_idx);
172 spin_unlock_irqrestore(&hisi_hba->lock, flags);
173 }
174 }
175
176 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
177 {
178 void *bitmap = hisi_hba->slot_index_tags;
179
180 set_bit(slot_idx, bitmap);
181 }
182
183 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba,
184 struct scsi_cmnd *scsi_cmnd)
185 {
186 int index;
187 void *bitmap = hisi_hba->slot_index_tags;
188 unsigned long flags;
189
190 if (scsi_cmnd)
191 return scsi_cmnd->request->tag;
192
193 spin_lock_irqsave(&hisi_hba->lock, flags);
194 index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
195 hisi_hba->last_slot_index + 1);
196 if (index >= hisi_hba->slot_index_count) {
197 index = find_next_zero_bit(bitmap,
198 hisi_hba->slot_index_count,
199 HISI_SAS_UNRESERVED_IPTT);
200 if (index >= hisi_hba->slot_index_count) {
201 spin_unlock_irqrestore(&hisi_hba->lock, flags);
202 return -SAS_QUEUE_FULL;
203 }
204 }
205 hisi_sas_slot_index_set(hisi_hba, index);
206 hisi_hba->last_slot_index = index;
207 spin_unlock_irqrestore(&hisi_hba->lock, flags);
208
209 return index;
210 }
211
212 static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
213 {
214 int i;
215
216 for (i = 0; i < hisi_hba->slot_index_count; ++i)
217 hisi_sas_slot_index_clear(hisi_hba, i);
218 }
219
220 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
221 struct hisi_sas_slot *slot)
222 {
223 unsigned long flags;
224 int device_id = slot->device_id;
225 struct hisi_sas_device *sas_dev = &hisi_hba->devices[device_id];
226
227 if (task) {
228 struct device *dev = hisi_hba->dev;
229
230 if (!task->lldd_task)
231 return;
232
233 task->lldd_task = NULL;
234
235 if (!sas_protocol_ata(task->task_proto)) {
236 struct sas_ssp_task *ssp_task = &task->ssp_task;
237 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
238
239 if (slot->n_elem)
240 dma_unmap_sg(dev, task->scatter,
241 task->num_scatter,
242 task->data_dir);
243 if (slot->n_elem_dif)
244 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
245 scsi_prot_sg_count(scsi_cmnd),
246 task->data_dir);
247 }
248 }
249
250 spin_lock_irqsave(&sas_dev->lock, flags);
251 list_del_init(&slot->entry);
252 spin_unlock_irqrestore(&sas_dev->lock, flags);
253
254 memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
255
256 hisi_sas_slot_index_free(hisi_hba, slot->idx);
257 }
258 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
259
260 static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
261 struct hisi_sas_slot *slot)
262 {
263 hisi_hba->hw->prep_smp(hisi_hba, slot);
264 }
265
266 static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
267 struct hisi_sas_slot *slot)
268 {
269 hisi_hba->hw->prep_ssp(hisi_hba, slot);
270 }
271
272 static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
273 struct hisi_sas_slot *slot)
274 {
275 hisi_hba->hw->prep_stp(hisi_hba, slot);
276 }
277
278 static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
279 struct hisi_sas_slot *slot,
280 int device_id, int abort_flag, int tag_to_abort)
281 {
282 hisi_hba->hw->prep_abort(hisi_hba, slot,
283 device_id, abort_flag, tag_to_abort);
284 }
285
286 static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba,
287 struct sas_task *task, int n_elem,
288 int n_elem_req)
289 {
290 struct device *dev = hisi_hba->dev;
291
292 if (!sas_protocol_ata(task->task_proto)) {
293 if (task->num_scatter) {
294 if (n_elem)
295 dma_unmap_sg(dev, task->scatter,
296 task->num_scatter,
297 task->data_dir);
298 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
299 if (n_elem_req)
300 dma_unmap_sg(dev, &task->smp_task.smp_req,
301 1, DMA_TO_DEVICE);
302 }
303 }
304 }
305
306 static int hisi_sas_dma_map(struct hisi_hba *hisi_hba,
307 struct sas_task *task, int *n_elem,
308 int *n_elem_req)
309 {
310 struct device *dev = hisi_hba->dev;
311 int rc;
312
313 if (sas_protocol_ata(task->task_proto)) {
314 *n_elem = task->num_scatter;
315 } else {
316 unsigned int req_len;
317
318 if (task->num_scatter) {
319 *n_elem = dma_map_sg(dev, task->scatter,
320 task->num_scatter, task->data_dir);
321 if (!*n_elem) {
322 rc = -ENOMEM;
323 goto prep_out;
324 }
325 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
326 *n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
327 1, DMA_TO_DEVICE);
328 if (!*n_elem_req) {
329 rc = -ENOMEM;
330 goto prep_out;
331 }
332 req_len = sg_dma_len(&task->smp_task.smp_req);
333 if (req_len & 0x3) {
334 rc = -EINVAL;
335 goto err_out_dma_unmap;
336 }
337 }
338 }
339
340 if (*n_elem > HISI_SAS_SGE_PAGE_CNT) {
341 dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT",
342 *n_elem);
343 rc = -EINVAL;
344 goto err_out_dma_unmap;
345 }
346 return 0;
347
348 err_out_dma_unmap:
349
350 hisi_sas_dma_unmap(hisi_hba, task, *n_elem,
351 *n_elem_req);
352 prep_out:
353 return rc;
354 }
355
356 static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba,
357 struct sas_task *task, int n_elem_dif)
358 {
359 struct device *dev = hisi_hba->dev;
360
361 if (n_elem_dif) {
362 struct sas_ssp_task *ssp_task = &task->ssp_task;
363 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
364
365 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
366 scsi_prot_sg_count(scsi_cmnd),
367 task->data_dir);
368 }
369 }
370
371 static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba,
372 int *n_elem_dif, struct sas_task *task)
373 {
374 struct device *dev = hisi_hba->dev;
375 struct sas_ssp_task *ssp_task;
376 struct scsi_cmnd *scsi_cmnd;
377 int rc;
378
379 if (task->num_scatter) {
380 ssp_task = &task->ssp_task;
381 scsi_cmnd = ssp_task->cmd;
382
383 if (scsi_prot_sg_count(scsi_cmnd)) {
384 *n_elem_dif = dma_map_sg(dev,
385 scsi_prot_sglist(scsi_cmnd),
386 scsi_prot_sg_count(scsi_cmnd),
387 task->data_dir);
388
389 if (!*n_elem_dif)
390 return -ENOMEM;
391
392 if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) {
393 dev_err(dev, "task prep: n_elem_dif(%d) too large\n",
394 *n_elem_dif);
395 rc = -EINVAL;
396 goto err_out_dif_dma_unmap;
397 }
398 }
399 }
400
401 return 0;
402
403 err_out_dif_dma_unmap:
404 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
405 scsi_prot_sg_count(scsi_cmnd), task->data_dir);
406 return rc;
407 }
408
409 static int hisi_sas_task_prep(struct sas_task *task,
410 struct hisi_sas_dq **dq_pointer,
411 bool is_tmf, struct hisi_sas_tmf_task *tmf,
412 int *pass)
413 {
414 struct domain_device *device = task->dev;
415 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
416 struct hisi_sas_device *sas_dev = device->lldd_dev;
417 struct hisi_sas_port *port;
418 struct hisi_sas_slot *slot;
419 struct hisi_sas_cmd_hdr *cmd_hdr_base;
420 struct asd_sas_port *sas_port = device->port;
421 struct device *dev = hisi_hba->dev;
422 int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
423 int n_elem = 0, n_elem_dif = 0, n_elem_req = 0;
424 struct hisi_sas_dq *dq;
425 unsigned long flags;
426 int wr_q_index;
427
428 if (DEV_IS_GONE(sas_dev)) {
429 if (sas_dev)
430 dev_info(dev, "task prep: device %d not ready\n",
431 sas_dev->device_id);
432 else
433 dev_info(dev, "task prep: device %016llx not ready\n",
434 SAS_ADDR(device->sas_addr));
435
436 return -ECOMM;
437 }
438
439 if (hisi_hba->reply_map) {
440 int cpu = raw_smp_processor_id();
441 unsigned int dq_index = hisi_hba->reply_map[cpu];
442
443 *dq_pointer = dq = &hisi_hba->dq[dq_index];
444 } else {
445 *dq_pointer = dq = sas_dev->dq;
446 }
447
448 port = to_hisi_sas_port(sas_port);
449 if (port && !port->port_attached) {
450 dev_info(dev, "task prep: %s port%d not attach device\n",
451 (dev_is_sata(device)) ?
452 "SATA/STP" : "SAS",
453 device->port->id);
454
455 return -ECOMM;
456 }
457
458 rc = hisi_sas_dma_map(hisi_hba, task, &n_elem,
459 &n_elem_req);
460 if (rc < 0)
461 goto prep_out;
462
463 if (!sas_protocol_ata(task->task_proto)) {
464 rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task);
465 if (rc < 0)
466 goto err_out_dma_unmap;
467 }
468
469 if (hisi_hba->hw->slot_index_alloc)
470 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
471 else {
472 struct scsi_cmnd *scsi_cmnd = NULL;
473
474 if (task->uldd_task) {
475 struct ata_queued_cmd *qc;
476
477 if (dev_is_sata(device)) {
478 qc = task->uldd_task;
479 scsi_cmnd = qc->scsicmd;
480 } else {
481 scsi_cmnd = task->uldd_task;
482 }
483 }
484 rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd);
485 }
486 if (rc < 0)
487 goto err_out_dif_dma_unmap;
488
489 slot_idx = rc;
490 slot = &hisi_hba->slot_info[slot_idx];
491
492 spin_lock_irqsave(&dq->lock, flags);
493 wr_q_index = dq->wr_point;
494 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
495 list_add_tail(&slot->delivery, &dq->list);
496 spin_unlock_irqrestore(&dq->lock, flags);
497 spin_lock_irqsave(&sas_dev->lock, flags);
498 list_add_tail(&slot->entry, &sas_dev->list);
499 spin_unlock_irqrestore(&sas_dev->lock, flags);
500
501 dlvry_queue = dq->id;
502 dlvry_queue_slot = wr_q_index;
503
504 slot->device_id = sas_dev->device_id;
505 slot->n_elem = n_elem;
506 slot->n_elem_dif = n_elem_dif;
507 slot->dlvry_queue = dlvry_queue;
508 slot->dlvry_queue_slot = dlvry_queue_slot;
509 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
510 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
511 slot->task = task;
512 slot->port = port;
513 slot->tmf = tmf;
514 slot->is_internal = is_tmf;
515 task->lldd_task = slot;
516
517 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
518 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
519 memset(hisi_sas_status_buf_addr_mem(slot), 0,
520 sizeof(struct hisi_sas_err_record));
521
522 switch (task->task_proto) {
523 case SAS_PROTOCOL_SMP:
524 hisi_sas_task_prep_smp(hisi_hba, slot);
525 break;
526 case SAS_PROTOCOL_SSP:
527 hisi_sas_task_prep_ssp(hisi_hba, slot);
528 break;
529 case SAS_PROTOCOL_SATA:
530 case SAS_PROTOCOL_STP:
531 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
532 hisi_sas_task_prep_ata(hisi_hba, slot);
533 break;
534 default:
535 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
536 task->task_proto);
537 break;
538 }
539
540 spin_lock_irqsave(&task->task_state_lock, flags);
541 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
542 spin_unlock_irqrestore(&task->task_state_lock, flags);
543
544 ++(*pass);
545 WRITE_ONCE(slot->ready, 1);
546
547 return 0;
548
549 err_out_dif_dma_unmap:
550 if (!sas_protocol_ata(task->task_proto))
551 hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif);
552 err_out_dma_unmap:
553 hisi_sas_dma_unmap(hisi_hba, task, n_elem,
554 n_elem_req);
555 prep_out:
556 dev_err(dev, "task prep: failed[%d]!\n", rc);
557 return rc;
558 }
559
560 static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
561 bool is_tmf, struct hisi_sas_tmf_task *tmf)
562 {
563 u32 rc;
564 u32 pass = 0;
565 unsigned long flags;
566 struct hisi_hba *hisi_hba;
567 struct device *dev;
568 struct domain_device *device = task->dev;
569 struct asd_sas_port *sas_port = device->port;
570 struct hisi_sas_dq *dq = NULL;
571
572 if (!sas_port) {
573 struct task_status_struct *ts = &task->task_status;
574
575 ts->resp = SAS_TASK_UNDELIVERED;
576 ts->stat = SAS_PHY_DOWN;
577
578
579
580
581 if (device->dev_type != SAS_SATA_DEV)
582 task->task_done(task);
583 return -ECOMM;
584 }
585
586 hisi_hba = dev_to_hisi_hba(device);
587 dev = hisi_hba->dev;
588
589 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) {
590
591
592
593
594
595
596 if (!preemptible())
597 return -EINVAL;
598
599 down(&hisi_hba->sem);
600 up(&hisi_hba->sem);
601 }
602
603
604 rc = hisi_sas_task_prep(task, &dq, is_tmf, tmf, &pass);
605 if (rc)
606 dev_err(dev, "task exec: failed[%d]!\n", rc);
607
608 if (likely(pass)) {
609 spin_lock_irqsave(&dq->lock, flags);
610 hisi_hba->hw->start_delivery(dq);
611 spin_unlock_irqrestore(&dq->lock, flags);
612 }
613
614 return rc;
615 }
616
617 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
618 {
619 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
620 struct asd_sas_phy *sas_phy = &phy->sas_phy;
621 struct sas_ha_struct *sas_ha;
622
623 if (!phy->phy_attached)
624 return;
625
626 sas_ha = &hisi_hba->sha;
627 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
628
629 if (sas_phy->phy) {
630 struct sas_phy *sphy = sas_phy->phy;
631
632 sphy->negotiated_linkrate = sas_phy->linkrate;
633 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
634 sphy->maximum_linkrate_hw =
635 hisi_hba->hw->phy_get_max_linkrate();
636 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
637 sphy->minimum_linkrate = phy->minimum_linkrate;
638
639 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
640 sphy->maximum_linkrate = phy->maximum_linkrate;
641 }
642
643 if (phy->phy_type & PORT_TYPE_SAS) {
644 struct sas_identify_frame *id;
645
646 id = (struct sas_identify_frame *)phy->frame_rcvd;
647 id->dev_type = phy->identify.device_type;
648 id->initiator_bits = SAS_PROTOCOL_ALL;
649 id->target_bits = phy->identify.target_port_protocols;
650 } else if (phy->phy_type & PORT_TYPE_SATA) {
651
652 }
653
654 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
655 sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
656 }
657
658 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
659 {
660 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
661 struct hisi_sas_device *sas_dev = NULL;
662 unsigned long flags;
663 int last = hisi_hba->last_dev_id;
664 int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES;
665 int i;
666
667 spin_lock_irqsave(&hisi_hba->lock, flags);
668 for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) {
669 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
670 int queue = i % hisi_hba->queue_count;
671 struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
672
673 hisi_hba->devices[i].device_id = i;
674 sas_dev = &hisi_hba->devices[i];
675 sas_dev->dev_status = HISI_SAS_DEV_INIT;
676 sas_dev->dev_type = device->dev_type;
677 sas_dev->hisi_hba = hisi_hba;
678 sas_dev->sas_device = device;
679 sas_dev->dq = dq;
680 spin_lock_init(&sas_dev->lock);
681 INIT_LIST_HEAD(&hisi_hba->devices[i].list);
682 break;
683 }
684 i++;
685 }
686 hisi_hba->last_dev_id = i;
687 spin_unlock_irqrestore(&hisi_hba->lock, flags);
688
689 return sas_dev;
690 }
691
692 #define HISI_SAS_DISK_RECOVER_CNT 3
693 static int hisi_sas_init_device(struct domain_device *device)
694 {
695 int rc = TMF_RESP_FUNC_COMPLETE;
696 struct scsi_lun lun;
697 struct hisi_sas_tmf_task tmf_task;
698 int retry = HISI_SAS_DISK_RECOVER_CNT;
699 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
700 struct device *dev = hisi_hba->dev;
701 struct sas_phy *local_phy;
702
703 switch (device->dev_type) {
704 case SAS_END_DEVICE:
705 int_to_scsilun(0, &lun);
706
707 tmf_task.tmf = TMF_CLEAR_TASK_SET;
708 while (retry-- > 0) {
709 rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
710 &tmf_task);
711 if (rc == TMF_RESP_FUNC_COMPLETE) {
712 hisi_sas_release_task(hisi_hba, device);
713 break;
714 }
715 }
716 break;
717 case SAS_SATA_DEV:
718 case SAS_SATA_PM:
719 case SAS_SATA_PM_PORT:
720 case SAS_SATA_PENDING:
721
722
723
724
725 local_phy = sas_get_local_phy(device);
726 if (!scsi_is_sas_phy_local(local_phy) &&
727 !test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
728 unsigned long deadline = ata_deadline(jiffies, 20000);
729 struct sata_device *sata_dev = &device->sata_dev;
730 struct ata_host *ata_host = sata_dev->ata_host;
731 struct ata_port_operations *ops = ata_host->ops;
732 struct ata_port *ap = sata_dev->ap;
733 struct ata_link *link;
734 unsigned int classes;
735
736 ata_for_each_link(link, ap, EDGE)
737 rc = ops->hardreset(link, &classes,
738 deadline);
739 }
740 sas_put_local_phy(local_phy);
741 if (rc) {
742 dev_warn(dev, "SATA disk hardreset fail: %d\n", rc);
743 return rc;
744 }
745
746 while (retry-- > 0) {
747 rc = hisi_sas_softreset_ata_disk(device);
748 if (!rc)
749 break;
750 }
751 break;
752 default:
753 break;
754 }
755
756 return rc;
757 }
758
759 static int hisi_sas_dev_found(struct domain_device *device)
760 {
761 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
762 struct domain_device *parent_dev = device->parent;
763 struct hisi_sas_device *sas_dev;
764 struct device *dev = hisi_hba->dev;
765 int rc;
766
767 if (hisi_hba->hw->alloc_dev)
768 sas_dev = hisi_hba->hw->alloc_dev(device);
769 else
770 sas_dev = hisi_sas_alloc_dev(device);
771 if (!sas_dev) {
772 dev_err(dev, "fail alloc dev: max support %d devices\n",
773 HISI_SAS_MAX_DEVICES);
774 return -EINVAL;
775 }
776
777 device->lldd_dev = sas_dev;
778 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
779
780 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
781 int phy_no;
782 u8 phy_num = parent_dev->ex_dev.num_phys;
783 struct ex_phy *phy;
784
785 for (phy_no = 0; phy_no < phy_num; phy_no++) {
786 phy = &parent_dev->ex_dev.ex_phy[phy_no];
787 if (SAS_ADDR(phy->attached_sas_addr) ==
788 SAS_ADDR(device->sas_addr))
789 break;
790 }
791
792 if (phy_no == phy_num) {
793 dev_info(dev, "dev found: no attached "
794 "dev:%016llx at ex:%016llx\n",
795 SAS_ADDR(device->sas_addr),
796 SAS_ADDR(parent_dev->sas_addr));
797 rc = -EINVAL;
798 goto err_out;
799 }
800 }
801
802 dev_info(dev, "dev[%d:%x] found\n",
803 sas_dev->device_id, sas_dev->dev_type);
804
805 rc = hisi_sas_init_device(device);
806 if (rc)
807 goto err_out;
808 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
809 return 0;
810
811 err_out:
812 hisi_sas_dev_gone(device);
813 return rc;
814 }
815
816 int hisi_sas_slave_configure(struct scsi_device *sdev)
817 {
818 struct domain_device *dev = sdev_to_domain_dev(sdev);
819 int ret = sas_slave_configure(sdev);
820
821 if (ret)
822 return ret;
823 if (!dev_is_sata(dev))
824 sas_change_queue_depth(sdev, 64);
825
826 return 0;
827 }
828 EXPORT_SYMBOL_GPL(hisi_sas_slave_configure);
829
830 void hisi_sas_scan_start(struct Scsi_Host *shost)
831 {
832 struct hisi_hba *hisi_hba = shost_priv(shost);
833
834 hisi_hba->hw->phys_init(hisi_hba);
835 }
836 EXPORT_SYMBOL_GPL(hisi_sas_scan_start);
837
838 int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
839 {
840 struct hisi_hba *hisi_hba = shost_priv(shost);
841 struct sas_ha_struct *sha = &hisi_hba->sha;
842
843
844 if (time < HZ)
845 return 0;
846
847 sas_drain_work(sha);
848 return 1;
849 }
850 EXPORT_SYMBOL_GPL(hisi_sas_scan_finished);
851
852 static void hisi_sas_phyup_work(struct work_struct *work)
853 {
854 struct hisi_sas_phy *phy =
855 container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]);
856 struct hisi_hba *hisi_hba = phy->hisi_hba;
857 struct asd_sas_phy *sas_phy = &phy->sas_phy;
858 int phy_no = sas_phy->id;
859
860 if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
861 hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
862 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
863 }
864
865 static void hisi_sas_linkreset_work(struct work_struct *work)
866 {
867 struct hisi_sas_phy *phy =
868 container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]);
869 struct asd_sas_phy *sas_phy = &phy->sas_phy;
870
871 hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL);
872 }
873
874 static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = {
875 [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work,
876 [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work,
877 };
878
879 bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
880 enum hisi_sas_phy_event event)
881 {
882 struct hisi_hba *hisi_hba = phy->hisi_hba;
883
884 if (WARN_ON(event >= HISI_PHYES_NUM))
885 return false;
886
887 return queue_work(hisi_hba->wq, &phy->works[event]);
888 }
889 EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
890
891 static void hisi_sas_wait_phyup_timedout(struct timer_list *t)
892 {
893 struct hisi_sas_phy *phy = from_timer(phy, t, timer);
894 struct hisi_hba *hisi_hba = phy->hisi_hba;
895 struct device *dev = hisi_hba->dev;
896 int phy_no = phy->sas_phy.id;
897
898 dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no);
899 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
900 }
901
902 void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no)
903 {
904 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
905 struct device *dev = hisi_hba->dev;
906
907 if (!timer_pending(&phy->timer)) {
908 dev_dbg(dev, "phy%d OOB ready\n", phy_no);
909 phy->timer.expires = jiffies + HISI_SAS_WAIT_PHYUP_TIMEOUT * HZ;
910 add_timer(&phy->timer);
911 }
912 }
913 EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready);
914
915 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
916 {
917 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
918 struct asd_sas_phy *sas_phy = &phy->sas_phy;
919 int i;
920
921 phy->hisi_hba = hisi_hba;
922 phy->port = NULL;
923 phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
924 phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate();
925 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
926 sas_phy->class = SAS;
927 sas_phy->iproto = SAS_PROTOCOL_ALL;
928 sas_phy->tproto = 0;
929 sas_phy->type = PHY_TYPE_PHYSICAL;
930 sas_phy->role = PHY_ROLE_INITIATOR;
931 sas_phy->oob_mode = OOB_NOT_CONNECTED;
932 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
933 sas_phy->id = phy_no;
934 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
935 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
936 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
937 sas_phy->lldd_phy = phy;
938
939 for (i = 0; i < HISI_PHYES_NUM; i++)
940 INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
941
942 spin_lock_init(&phy->lock);
943
944 timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0);
945 }
946
947
948 void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable)
949 {
950 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
951 struct asd_sas_phy *aphy = &phy->sas_phy;
952 struct sas_phy *sphy = aphy->phy;
953 unsigned long flags;
954
955 spin_lock_irqsave(&phy->lock, flags);
956
957 if (enable) {
958
959 if (!phy->enable)
960 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
961 hisi_hba->hw->phy_start(hisi_hba, phy_no);
962 } else {
963 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
964 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
965 }
966 phy->enable = enable;
967 spin_unlock_irqrestore(&phy->lock, flags);
968 }
969 EXPORT_SYMBOL_GPL(hisi_sas_phy_enable);
970
971 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
972 {
973 struct sas_ha_struct *sas_ha = sas_phy->ha;
974 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
975 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
976 struct asd_sas_port *sas_port = sas_phy->port;
977 struct hisi_sas_port *port;
978 unsigned long flags;
979
980 if (!sas_port)
981 return;
982
983 port = to_hisi_sas_port(sas_port);
984 spin_lock_irqsave(&hisi_hba->lock, flags);
985 port->port_attached = 1;
986 port->id = phy->port_id;
987 phy->port = port;
988 sas_port->lldd_port = port;
989 spin_unlock_irqrestore(&hisi_hba->lock, flags);
990 }
991
992 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
993 struct hisi_sas_slot *slot)
994 {
995 if (task) {
996 unsigned long flags;
997 struct task_status_struct *ts;
998
999 ts = &task->task_status;
1000
1001 ts->resp = SAS_TASK_COMPLETE;
1002 ts->stat = SAS_ABORTED_TASK;
1003 spin_lock_irqsave(&task->task_state_lock, flags);
1004 task->task_state_flags &=
1005 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1006 if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP)
1007 task->task_state_flags |= SAS_TASK_STATE_DONE;
1008 spin_unlock_irqrestore(&task->task_state_lock, flags);
1009 }
1010
1011 hisi_sas_slot_task_free(hisi_hba, task, slot);
1012 }
1013
1014 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
1015 struct domain_device *device)
1016 {
1017 struct hisi_sas_slot *slot, *slot2;
1018 struct hisi_sas_device *sas_dev = device->lldd_dev;
1019
1020 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
1021 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
1022 }
1023
1024 void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
1025 {
1026 struct hisi_sas_device *sas_dev;
1027 struct domain_device *device;
1028 int i;
1029
1030 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1031 sas_dev = &hisi_hba->devices[i];
1032 device = sas_dev->sas_device;
1033
1034 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
1035 !device)
1036 continue;
1037
1038 hisi_sas_release_task(hisi_hba, device);
1039 }
1040 }
1041 EXPORT_SYMBOL_GPL(hisi_sas_release_tasks);
1042
1043 static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
1044 struct domain_device *device)
1045 {
1046 if (hisi_hba->hw->dereg_device)
1047 hisi_hba->hw->dereg_device(hisi_hba, device);
1048 }
1049
1050 static void hisi_sas_dev_gone(struct domain_device *device)
1051 {
1052 struct hisi_sas_device *sas_dev = device->lldd_dev;
1053 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1054 struct device *dev = hisi_hba->dev;
1055
1056 dev_info(dev, "dev[%d:%x] is gone\n",
1057 sas_dev->device_id, sas_dev->dev_type);
1058
1059 down(&hisi_hba->sem);
1060 if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
1061 hisi_sas_internal_task_abort(hisi_hba, device,
1062 HISI_SAS_INT_ABT_DEV, 0);
1063
1064 hisi_sas_dereg_device(hisi_hba, device);
1065
1066 hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
1067 device->lldd_dev = NULL;
1068 }
1069
1070 if (hisi_hba->hw->free_device)
1071 hisi_hba->hw->free_device(sas_dev);
1072 sas_dev->dev_type = SAS_PHY_UNUSED;
1073 sas_dev->sas_device = NULL;
1074 up(&hisi_hba->sem);
1075 }
1076
1077 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
1078 {
1079 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
1080 }
1081
1082 static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
1083 struct sas_phy_linkrates *r)
1084 {
1085 struct sas_phy_linkrates _r;
1086
1087 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1088 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1089 enum sas_linkrate min, max;
1090
1091 if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS)
1092 return -EINVAL;
1093
1094 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1095 max = sas_phy->phy->maximum_linkrate;
1096 min = r->minimum_linkrate;
1097 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1098 max = r->maximum_linkrate;
1099 min = sas_phy->phy->minimum_linkrate;
1100 } else
1101 return -EINVAL;
1102
1103 _r.maximum_linkrate = max;
1104 _r.minimum_linkrate = min;
1105
1106 sas_phy->phy->maximum_linkrate = max;
1107 sas_phy->phy->minimum_linkrate = min;
1108
1109 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1110 msleep(100);
1111 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
1112 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1113
1114 return 0;
1115 }
1116
1117 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
1118 void *funcdata)
1119 {
1120 struct sas_ha_struct *sas_ha = sas_phy->ha;
1121 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1122 int phy_no = sas_phy->id;
1123
1124 switch (func) {
1125 case PHY_FUNC_HARD_RESET:
1126 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
1127 break;
1128
1129 case PHY_FUNC_LINK_RESET:
1130 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1131 msleep(100);
1132 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1133 break;
1134
1135 case PHY_FUNC_DISABLE:
1136 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1137 break;
1138
1139 case PHY_FUNC_SET_LINK_RATE:
1140 return hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
1141 case PHY_FUNC_GET_EVENTS:
1142 if (hisi_hba->hw->get_events) {
1143 hisi_hba->hw->get_events(hisi_hba, phy_no);
1144 break;
1145 }
1146
1147 case PHY_FUNC_RELEASE_SPINUP_HOLD:
1148 default:
1149 return -EOPNOTSUPP;
1150 }
1151 return 0;
1152 }
1153
1154 static void hisi_sas_task_done(struct sas_task *task)
1155 {
1156 del_timer(&task->slow_task->timer);
1157 complete(&task->slow_task->completion);
1158 }
1159
1160 static void hisi_sas_tmf_timedout(struct timer_list *t)
1161 {
1162 struct sas_task_slow *slow = from_timer(slow, t, timer);
1163 struct sas_task *task = slow->task;
1164 unsigned long flags;
1165 bool is_completed = true;
1166
1167 spin_lock_irqsave(&task->task_state_lock, flags);
1168 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1169 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1170 is_completed = false;
1171 }
1172 spin_unlock_irqrestore(&task->task_state_lock, flags);
1173
1174 if (!is_completed)
1175 complete(&task->slow_task->completion);
1176 }
1177
1178 #define TASK_TIMEOUT 20
1179 #define TASK_RETRY 3
1180 #define INTERNAL_ABORT_TIMEOUT 6
1181 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
1182 void *parameter, u32 para_len,
1183 struct hisi_sas_tmf_task *tmf)
1184 {
1185 struct hisi_sas_device *sas_dev = device->lldd_dev;
1186 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
1187 struct device *dev = hisi_hba->dev;
1188 struct sas_task *task;
1189 int res, retry;
1190
1191 for (retry = 0; retry < TASK_RETRY; retry++) {
1192 task = sas_alloc_slow_task(GFP_KERNEL);
1193 if (!task)
1194 return -ENOMEM;
1195
1196 task->dev = device;
1197 task->task_proto = device->tproto;
1198
1199 if (dev_is_sata(device)) {
1200 task->ata_task.device_control_reg_update = 1;
1201 memcpy(&task->ata_task.fis, parameter, para_len);
1202 } else {
1203 memcpy(&task->ssp_task, parameter, para_len);
1204 }
1205 task->task_done = hisi_sas_task_done;
1206
1207 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1208 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT * HZ;
1209 add_timer(&task->slow_task->timer);
1210
1211 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
1212
1213 if (res) {
1214 del_timer(&task->slow_task->timer);
1215 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
1216 res);
1217 goto ex_err;
1218 }
1219
1220 wait_for_completion(&task->slow_task->completion);
1221 res = TMF_RESP_FUNC_FAILED;
1222
1223 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1224 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1225 struct hisi_sas_slot *slot = task->lldd_task;
1226
1227 dev_err(dev, "abort tmf: TMF task timeout and not done\n");
1228 if (slot) {
1229 struct hisi_sas_cq *cq =
1230 &hisi_hba->cq[slot->dlvry_queue];
1231
1232
1233
1234
1235 tasklet_kill(&cq->tasklet);
1236 slot->task = NULL;
1237 }
1238
1239 goto ex_err;
1240 } else
1241 dev_err(dev, "abort tmf: TMF task timeout\n");
1242 }
1243
1244 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1245 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1246 res = TMF_RESP_FUNC_COMPLETE;
1247 break;
1248 }
1249
1250 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1251 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1252 res = TMF_RESP_FUNC_SUCC;
1253 break;
1254 }
1255
1256 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1257 task->task_status.stat == SAS_DATA_UNDERRUN) {
1258
1259
1260
1261 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x sts 0x%x underrun\n",
1262 SAS_ADDR(device->sas_addr),
1263 task->task_status.resp,
1264 task->task_status.stat);
1265 res = task->task_status.residual;
1266 break;
1267 }
1268
1269 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1270 task->task_status.stat == SAS_DATA_OVERRUN) {
1271 dev_warn(dev, "abort tmf: blocked task error\n");
1272 res = -EMSGSIZE;
1273 break;
1274 }
1275
1276 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1277 task->task_status.stat == SAS_OPEN_REJECT) {
1278 dev_warn(dev, "abort tmf: open reject failed\n");
1279 res = -EIO;
1280 } else {
1281 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x status 0x%x\n",
1282 SAS_ADDR(device->sas_addr),
1283 task->task_status.resp,
1284 task->task_status.stat);
1285 }
1286 sas_free_task(task);
1287 task = NULL;
1288 }
1289 ex_err:
1290 if (retry == TASK_RETRY)
1291 dev_warn(dev, "abort tmf: executing internal task failed!\n");
1292 sas_free_task(task);
1293 return res;
1294 }
1295
1296 static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
1297 bool reset, int pmp, u8 *fis)
1298 {
1299 struct ata_taskfile tf;
1300
1301 ata_tf_init(dev, &tf);
1302 if (reset)
1303 tf.ctl |= ATA_SRST;
1304 else
1305 tf.ctl &= ~ATA_SRST;
1306 tf.command = ATA_CMD_DEV_RESET;
1307 ata_tf_to_fis(&tf, pmp, 0, fis);
1308 }
1309
1310 static int hisi_sas_softreset_ata_disk(struct domain_device *device)
1311 {
1312 u8 fis[20] = {0};
1313 struct ata_port *ap = device->sata_dev.ap;
1314 struct ata_link *link;
1315 int rc = TMF_RESP_FUNC_FAILED;
1316 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1317 struct device *dev = hisi_hba->dev;
1318 int s = sizeof(struct host_to_dev_fis);
1319
1320 ata_for_each_link(link, ap, EDGE) {
1321 int pmp = sata_srst_pmp(link);
1322
1323 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1324 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
1325 if (rc != TMF_RESP_FUNC_COMPLETE)
1326 break;
1327 }
1328
1329 if (rc == TMF_RESP_FUNC_COMPLETE) {
1330 ata_for_each_link(link, ap, EDGE) {
1331 int pmp = sata_srst_pmp(link);
1332
1333 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
1334 rc = hisi_sas_exec_internal_tmf_task(device, fis,
1335 s, NULL);
1336 if (rc != TMF_RESP_FUNC_COMPLETE)
1337 dev_err(dev, "ata disk de-reset failed\n");
1338 }
1339 } else {
1340 dev_err(dev, "ata disk reset failed\n");
1341 }
1342
1343 if (rc == TMF_RESP_FUNC_COMPLETE)
1344 hisi_sas_release_task(hisi_hba, device);
1345
1346 return rc;
1347 }
1348
1349 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
1350 u8 *lun, struct hisi_sas_tmf_task *tmf)
1351 {
1352 struct sas_ssp_task ssp_task;
1353
1354 if (!(device->tproto & SAS_PROTOCOL_SSP))
1355 return TMF_RESP_FUNC_ESUPP;
1356
1357 memcpy(ssp_task.LUN, lun, 8);
1358
1359 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
1360 sizeof(ssp_task), tmf);
1361 }
1362
1363 static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
1364 {
1365 u32 state = hisi_hba->hw->get_phys_state(hisi_hba);
1366 int i;
1367
1368 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1369 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1370 struct domain_device *device = sas_dev->sas_device;
1371 struct asd_sas_port *sas_port;
1372 struct hisi_sas_port *port;
1373 struct hisi_sas_phy *phy = NULL;
1374 struct asd_sas_phy *sas_phy;
1375
1376 if ((sas_dev->dev_type == SAS_PHY_UNUSED)
1377 || !device || !device->port)
1378 continue;
1379
1380 sas_port = device->port;
1381 port = to_hisi_sas_port(sas_port);
1382
1383 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el)
1384 if (state & BIT(sas_phy->id)) {
1385 phy = sas_phy->lldd_phy;
1386 break;
1387 }
1388
1389 if (phy) {
1390 port->id = phy->port_id;
1391
1392
1393 if (!device->parent)
1394 device->linkrate = phy->sas_phy.linkrate;
1395
1396 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
1397 } else
1398 port->id = 0xff;
1399 }
1400 }
1401
1402 static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
1403 {
1404 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1405 struct asd_sas_port *_sas_port = NULL;
1406 int phy_no;
1407
1408 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1409 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1410 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1411 struct asd_sas_port *sas_port = sas_phy->port;
1412 bool do_port_check = !!(_sas_port != sas_port);
1413
1414 if (!sas_phy->phy->enabled)
1415 continue;
1416
1417
1418 if (state & BIT(phy_no)) {
1419 if (do_port_check && sas_port && sas_port->port_dev) {
1420 struct domain_device *dev = sas_port->port_dev;
1421
1422 _sas_port = sas_port;
1423
1424 if (dev_is_expander(dev->dev_type))
1425 sas_ha->notify_port_event(sas_phy,
1426 PORTE_BROADCAST_RCVD);
1427 }
1428 } else {
1429 hisi_sas_phy_down(hisi_hba, phy_no, 0);
1430 }
1431
1432 }
1433 }
1434
1435 static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
1436 {
1437 struct hisi_sas_device *sas_dev;
1438 struct domain_device *device;
1439 int i;
1440
1441 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1442 sas_dev = &hisi_hba->devices[i];
1443 device = sas_dev->sas_device;
1444
1445 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1446 continue;
1447
1448 hisi_sas_init_device(device);
1449 }
1450 }
1451
1452 static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba,
1453 struct asd_sas_port *sas_port,
1454 struct domain_device *device)
1455 {
1456 struct hisi_sas_tmf_task tmf_task = { .force_phy = 1 };
1457 struct ata_port *ap = device->sata_dev.ap;
1458 struct device *dev = hisi_hba->dev;
1459 int s = sizeof(struct host_to_dev_fis);
1460 int rc = TMF_RESP_FUNC_FAILED;
1461 struct asd_sas_phy *sas_phy;
1462 struct ata_link *link;
1463 u8 fis[20] = {0};
1464 u32 state;
1465
1466 state = hisi_hba->hw->get_phys_state(hisi_hba);
1467 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) {
1468 if (!(state & BIT(sas_phy->id)))
1469 continue;
1470
1471 ata_for_each_link(link, ap, EDGE) {
1472 int pmp = sata_srst_pmp(link);
1473
1474 tmf_task.phy_id = sas_phy->id;
1475 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1476 rc = hisi_sas_exec_internal_tmf_task(device, fis, s,
1477 &tmf_task);
1478 if (rc != TMF_RESP_FUNC_COMPLETE) {
1479 dev_err(dev, "phy%d ata reset failed rc=%d\n",
1480 sas_phy->id, rc);
1481 break;
1482 }
1483 }
1484 }
1485 }
1486
1487 static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba)
1488 {
1489 struct device *dev = hisi_hba->dev;
1490 int port_no, rc, i;
1491
1492 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1493 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1494 struct domain_device *device = sas_dev->sas_device;
1495
1496 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1497 continue;
1498
1499 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1500 HISI_SAS_INT_ABT_DEV, 0);
1501 if (rc < 0)
1502 dev_err(dev, "STP reject: abort dev failed %d\n", rc);
1503 }
1504
1505 for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) {
1506 struct hisi_sas_port *port = &hisi_hba->port[port_no];
1507 struct asd_sas_port *sas_port = &port->sas_port;
1508 struct domain_device *port_dev = sas_port->port_dev;
1509 struct domain_device *device;
1510
1511 if (!port_dev || !dev_is_expander(port_dev->dev_type))
1512 continue;
1513
1514
1515 list_for_each_entry(device, &sas_port->dev_list,
1516 dev_list_node) {
1517 if (dev_is_sata(device)) {
1518 hisi_sas_send_ata_reset_each_phy(hisi_hba,
1519 sas_port,
1520 device);
1521 break;
1522 }
1523 }
1524 }
1525 }
1526
1527 void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba)
1528 {
1529 struct Scsi_Host *shost = hisi_hba->shost;
1530
1531 down(&hisi_hba->sem);
1532 hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba);
1533
1534 scsi_block_requests(shost);
1535 hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000);
1536
1537 if (timer_pending(&hisi_hba->timer))
1538 del_timer_sync(&hisi_hba->timer);
1539
1540 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1541 }
1542 EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare);
1543
1544 void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
1545 {
1546 struct Scsi_Host *shost = hisi_hba->shost;
1547 u32 state;
1548
1549
1550 hisi_hba->hw->phys_init(hisi_hba);
1551 msleep(1000);
1552 hisi_sas_refresh_port_id(hisi_hba);
1553 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1554
1555 if (hisi_hba->reject_stp_links_msk)
1556 hisi_sas_terminate_stp_reject(hisi_hba);
1557 hisi_sas_reset_init_all_devices(hisi_hba);
1558 up(&hisi_hba->sem);
1559 scsi_unblock_requests(shost);
1560 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1561
1562 state = hisi_hba->hw->get_phys_state(hisi_hba);
1563 hisi_sas_rescan_topology(hisi_hba, state);
1564 }
1565 EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
1566
1567 static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
1568 {
1569 struct device *dev = hisi_hba->dev;
1570 struct Scsi_Host *shost = hisi_hba->shost;
1571 int rc;
1572
1573 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct)
1574 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
1575
1576 if (!hisi_hba->hw->soft_reset)
1577 return -1;
1578
1579 if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
1580 return -1;
1581
1582 dev_info(dev, "controller resetting...\n");
1583 hisi_sas_controller_reset_prepare(hisi_hba);
1584
1585 rc = hisi_hba->hw->soft_reset(hisi_hba);
1586 if (rc) {
1587 dev_warn(dev, "controller reset failed (%d)\n", rc);
1588 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1589 up(&hisi_hba->sem);
1590 scsi_unblock_requests(shost);
1591 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1592 return rc;
1593 }
1594
1595 hisi_sas_controller_reset_done(hisi_hba);
1596 dev_info(dev, "controller reset complete\n");
1597
1598 return 0;
1599 }
1600
1601 static int hisi_sas_abort_task(struct sas_task *task)
1602 {
1603 struct scsi_lun lun;
1604 struct hisi_sas_tmf_task tmf_task;
1605 struct domain_device *device = task->dev;
1606 struct hisi_sas_device *sas_dev = device->lldd_dev;
1607 struct hisi_hba *hisi_hba;
1608 struct device *dev;
1609 int rc = TMF_RESP_FUNC_FAILED;
1610 unsigned long flags;
1611
1612 if (!sas_dev)
1613 return TMF_RESP_FUNC_FAILED;
1614
1615 hisi_hba = dev_to_hisi_hba(task->dev);
1616 dev = hisi_hba->dev;
1617
1618 spin_lock_irqsave(&task->task_state_lock, flags);
1619 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1620 struct hisi_sas_slot *slot = task->lldd_task;
1621 struct hisi_sas_cq *cq;
1622
1623 if (slot) {
1624
1625
1626
1627
1628 cq = &hisi_hba->cq[slot->dlvry_queue];
1629 tasklet_kill(&cq->tasklet);
1630 }
1631 spin_unlock_irqrestore(&task->task_state_lock, flags);
1632 rc = TMF_RESP_FUNC_COMPLETE;
1633 goto out;
1634 }
1635 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1636 spin_unlock_irqrestore(&task->task_state_lock, flags);
1637
1638 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1639 struct scsi_cmnd *cmnd = task->uldd_task;
1640 struct hisi_sas_slot *slot = task->lldd_task;
1641 u16 tag = slot->idx;
1642 int rc2;
1643
1644 int_to_scsilun(cmnd->device->lun, &lun);
1645 tmf_task.tmf = TMF_ABORT_TASK;
1646 tmf_task.tag_of_task_to_be_managed = tag;
1647
1648 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
1649 &tmf_task);
1650
1651 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
1652 HISI_SAS_INT_ABT_CMD, tag);
1653 if (rc2 < 0) {
1654 dev_err(dev, "abort task: internal abort (%d)\n", rc2);
1655 return TMF_RESP_FUNC_FAILED;
1656 }
1657
1658
1659
1660
1661
1662
1663
1664
1665 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
1666 if (task->lldd_task)
1667 hisi_sas_do_release_task(hisi_hba, task, slot);
1668 }
1669 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1670 task->task_proto & SAS_PROTOCOL_STP) {
1671 if (task->dev->dev_type == SAS_SATA_DEV) {
1672 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1673 HISI_SAS_INT_ABT_DEV,
1674 0);
1675 if (rc < 0) {
1676 dev_err(dev, "abort task: internal abort failed\n");
1677 goto out;
1678 }
1679 hisi_sas_dereg_device(hisi_hba, device);
1680 rc = hisi_sas_softreset_ata_disk(device);
1681 }
1682 } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
1683
1684 struct hisi_sas_slot *slot = task->lldd_task;
1685 u32 tag = slot->idx;
1686 struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
1687
1688 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1689 HISI_SAS_INT_ABT_CMD, tag);
1690 if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
1691 task->lldd_task) {
1692
1693
1694
1695
1696 tasklet_kill(&cq->tasklet);
1697 slot->task = NULL;
1698 }
1699 }
1700
1701 out:
1702 if (rc != TMF_RESP_FUNC_COMPLETE)
1703 dev_notice(dev, "abort task: rc=%d\n", rc);
1704 return rc;
1705 }
1706
1707 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
1708 {
1709 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1710 struct device *dev = hisi_hba->dev;
1711 struct hisi_sas_tmf_task tmf_task;
1712 int rc;
1713
1714 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1715 HISI_SAS_INT_ABT_DEV, 0);
1716 if (rc < 0) {
1717 dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
1718 return TMF_RESP_FUNC_FAILED;
1719 }
1720 hisi_sas_dereg_device(hisi_hba, device);
1721
1722 tmf_task.tmf = TMF_ABORT_TASK_SET;
1723 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1724
1725 if (rc == TMF_RESP_FUNC_COMPLETE)
1726 hisi_sas_release_task(hisi_hba, device);
1727
1728 return rc;
1729 }
1730
1731 static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
1732 {
1733 struct hisi_sas_tmf_task tmf_task;
1734 int rc;
1735
1736 tmf_task.tmf = TMF_CLEAR_ACA;
1737 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1738
1739 return rc;
1740 }
1741
1742 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1743 {
1744 struct sas_phy *local_phy = sas_get_local_phy(device);
1745 struct hisi_sas_device *sas_dev = device->lldd_dev;
1746 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1747 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1748 DECLARE_COMPLETION_ONSTACK(phyreset);
1749 int rc, reset_type;
1750
1751 if (!local_phy->enabled) {
1752 sas_put_local_phy(local_phy);
1753 return -ENODEV;
1754 }
1755
1756 if (scsi_is_sas_phy_local(local_phy)) {
1757 struct asd_sas_phy *sas_phy =
1758 sas_ha->sas_phy[local_phy->number];
1759 struct hisi_sas_phy *phy =
1760 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1761 phy->in_reset = 1;
1762 phy->reset_completion = &phyreset;
1763 }
1764
1765 reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT ||
1766 !dev_is_sata(device)) ? true : false;
1767
1768 rc = sas_phy_reset(local_phy, reset_type);
1769 sas_put_local_phy(local_phy);
1770
1771 if (scsi_is_sas_phy_local(local_phy)) {
1772 struct asd_sas_phy *sas_phy =
1773 sas_ha->sas_phy[local_phy->number];
1774 struct hisi_sas_phy *phy =
1775 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1776 int ret = wait_for_completion_timeout(&phyreset, 2 * HZ);
1777 unsigned long flags;
1778
1779 spin_lock_irqsave(&phy->lock, flags);
1780 phy->reset_completion = NULL;
1781 phy->in_reset = 0;
1782 spin_unlock_irqrestore(&phy->lock, flags);
1783
1784
1785 if (!ret)
1786 hisi_sas_phy_down(hisi_hba, sas_phy->id, 0);
1787 } else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
1788
1789
1790
1791
1792 if (!rc)
1793 msleep(2000);
1794 }
1795
1796 return rc;
1797 }
1798
1799 static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1800 {
1801 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1802 struct device *dev = hisi_hba->dev;
1803 int rc;
1804
1805 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1806 HISI_SAS_INT_ABT_DEV, 0);
1807 if (rc < 0) {
1808 dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
1809 return TMF_RESP_FUNC_FAILED;
1810 }
1811 hisi_sas_dereg_device(hisi_hba, device);
1812
1813 if (dev_is_sata(device)) {
1814 rc = hisi_sas_softreset_ata_disk(device);
1815 if (rc == TMF_RESP_FUNC_FAILED)
1816 return TMF_RESP_FUNC_FAILED;
1817 }
1818
1819 rc = hisi_sas_debug_I_T_nexus_reset(device);
1820
1821 if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
1822 hisi_sas_release_task(hisi_hba, device);
1823
1824 return rc;
1825 }
1826
1827 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1828 {
1829 struct hisi_sas_device *sas_dev = device->lldd_dev;
1830 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1831 struct device *dev = hisi_hba->dev;
1832 int rc = TMF_RESP_FUNC_FAILED;
1833
1834
1835 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1836 HISI_SAS_INT_ABT_DEV, 0);
1837 if (rc < 0) {
1838 dev_err(dev, "lu_reset: internal abort failed\n");
1839 goto out;
1840 }
1841 hisi_sas_dereg_device(hisi_hba, device);
1842
1843 if (dev_is_sata(device)) {
1844 struct sas_phy *phy;
1845
1846 phy = sas_get_local_phy(device);
1847
1848 rc = sas_phy_reset(phy, true);
1849
1850 if (rc == 0)
1851 hisi_sas_release_task(hisi_hba, device);
1852 sas_put_local_phy(phy);
1853 } else {
1854 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1855
1856 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1857 if (rc == TMF_RESP_FUNC_COMPLETE)
1858 hisi_sas_release_task(hisi_hba, device);
1859 }
1860 out:
1861 if (rc != TMF_RESP_FUNC_COMPLETE)
1862 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
1863 sas_dev->device_id, rc);
1864 return rc;
1865 }
1866
1867 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1868 {
1869 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1870 struct device *dev = hisi_hba->dev;
1871 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
1872 int rc, i;
1873
1874 queue_work(hisi_hba->wq, &r.work);
1875 wait_for_completion(r.completion);
1876 if (!r.done)
1877 return TMF_RESP_FUNC_FAILED;
1878
1879 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1880 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1881 struct domain_device *device = sas_dev->sas_device;
1882
1883 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
1884 dev_is_expander(device->dev_type))
1885 continue;
1886
1887 rc = hisi_sas_debug_I_T_nexus_reset(device);
1888 if (rc != TMF_RESP_FUNC_COMPLETE)
1889 dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n",
1890 sas_dev->device_id, rc);
1891 }
1892
1893 hisi_sas_release_tasks(hisi_hba);
1894
1895 return TMF_RESP_FUNC_COMPLETE;
1896 }
1897
1898 static int hisi_sas_query_task(struct sas_task *task)
1899 {
1900 struct scsi_lun lun;
1901 struct hisi_sas_tmf_task tmf_task;
1902 int rc = TMF_RESP_FUNC_FAILED;
1903
1904 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1905 struct scsi_cmnd *cmnd = task->uldd_task;
1906 struct domain_device *device = task->dev;
1907 struct hisi_sas_slot *slot = task->lldd_task;
1908 u32 tag = slot->idx;
1909
1910 int_to_scsilun(cmnd->device->lun, &lun);
1911 tmf_task.tmf = TMF_QUERY_TASK;
1912 tmf_task.tag_of_task_to_be_managed = tag;
1913
1914 rc = hisi_sas_debug_issue_ssp_tmf(device,
1915 lun.scsi_lun,
1916 &tmf_task);
1917 switch (rc) {
1918
1919 case TMF_RESP_FUNC_SUCC:
1920
1921 case TMF_RESP_FUNC_FAILED:
1922 case TMF_RESP_FUNC_COMPLETE:
1923 break;
1924 default:
1925 rc = TMF_RESP_FUNC_FAILED;
1926 break;
1927 }
1928 }
1929 return rc;
1930 }
1931
1932 static int
1933 hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
1934 struct sas_task *task, int abort_flag,
1935 int task_tag, struct hisi_sas_dq *dq)
1936 {
1937 struct domain_device *device = task->dev;
1938 struct hisi_sas_device *sas_dev = device->lldd_dev;
1939 struct device *dev = hisi_hba->dev;
1940 struct hisi_sas_port *port;
1941 struct hisi_sas_slot *slot;
1942 struct asd_sas_port *sas_port = device->port;
1943 struct hisi_sas_cmd_hdr *cmd_hdr_base;
1944 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
1945 unsigned long flags;
1946 int wr_q_index;
1947
1948 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
1949 return -EINVAL;
1950
1951 if (!device->port)
1952 return -1;
1953
1954 port = to_hisi_sas_port(sas_port);
1955
1956
1957 rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
1958 if (rc < 0)
1959 goto err_out;
1960
1961 slot_idx = rc;
1962 slot = &hisi_hba->slot_info[slot_idx];
1963
1964 spin_lock_irqsave(&dq->lock, flags);
1965 wr_q_index = dq->wr_point;
1966 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
1967 list_add_tail(&slot->delivery, &dq->list);
1968 spin_unlock_irqrestore(&dq->lock, flags);
1969 spin_lock_irqsave(&sas_dev->lock, flags);
1970 list_add_tail(&slot->entry, &sas_dev->list);
1971 spin_unlock_irqrestore(&sas_dev->lock, flags);
1972
1973 dlvry_queue = dq->id;
1974 dlvry_queue_slot = wr_q_index;
1975
1976 slot->device_id = sas_dev->device_id;
1977 slot->n_elem = n_elem;
1978 slot->dlvry_queue = dlvry_queue;
1979 slot->dlvry_queue_slot = dlvry_queue_slot;
1980 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1981 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1982 slot->task = task;
1983 slot->port = port;
1984 slot->is_internal = true;
1985 task->lldd_task = slot;
1986
1987 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1988 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
1989 memset(hisi_sas_status_buf_addr_mem(slot), 0,
1990 sizeof(struct hisi_sas_err_record));
1991
1992 hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1993 abort_flag, task_tag);
1994
1995 spin_lock_irqsave(&task->task_state_lock, flags);
1996 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
1997 spin_unlock_irqrestore(&task->task_state_lock, flags);
1998 WRITE_ONCE(slot->ready, 1);
1999
2000 spin_lock_irqsave(&dq->lock, flags);
2001 hisi_hba->hw->start_delivery(dq);
2002 spin_unlock_irqrestore(&dq->lock, flags);
2003
2004 return 0;
2005
2006 err_out:
2007 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
2008
2009 return rc;
2010 }
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022 static int
2023 _hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2024 struct domain_device *device, int abort_flag,
2025 int tag, struct hisi_sas_dq *dq)
2026 {
2027 struct sas_task *task;
2028 struct hisi_sas_device *sas_dev = device->lldd_dev;
2029 struct device *dev = hisi_hba->dev;
2030 int res;
2031
2032
2033
2034
2035
2036
2037
2038 if (!hisi_hba->hw->prep_abort)
2039 return TMF_RESP_FUNC_FAILED;
2040
2041 task = sas_alloc_slow_task(GFP_KERNEL);
2042 if (!task)
2043 return -ENOMEM;
2044
2045 task->dev = device;
2046 task->task_proto = device->tproto;
2047 task->task_done = hisi_sas_task_done;
2048 task->slow_task->timer.function = hisi_sas_tmf_timedout;
2049 task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT * HZ;
2050 add_timer(&task->slow_task->timer);
2051
2052 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
2053 task, abort_flag, tag, dq);
2054 if (res) {
2055 del_timer(&task->slow_task->timer);
2056 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
2057 res);
2058 goto exit;
2059 }
2060 wait_for_completion(&task->slow_task->completion);
2061 res = TMF_RESP_FUNC_FAILED;
2062
2063
2064 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
2065 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct)
2066 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
2067
2068 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
2069 struct hisi_sas_slot *slot = task->lldd_task;
2070
2071 if (slot) {
2072 struct hisi_sas_cq *cq =
2073 &hisi_hba->cq[slot->dlvry_queue];
2074
2075
2076
2077
2078 tasklet_kill(&cq->tasklet);
2079 slot->task = NULL;
2080 }
2081 dev_err(dev, "internal task abort: timeout and not done.\n");
2082
2083 res = -EIO;
2084 goto exit;
2085 } else
2086 dev_err(dev, "internal task abort: timeout.\n");
2087 }
2088
2089 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2090 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
2091 res = TMF_RESP_FUNC_COMPLETE;
2092 goto exit;
2093 }
2094
2095 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2096 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
2097 res = TMF_RESP_FUNC_SUCC;
2098 goto exit;
2099 }
2100
2101 exit:
2102 dev_dbg(dev, "internal task abort: task to dev %016llx task=%pK resp: 0x%x sts 0x%x\n",
2103 SAS_ADDR(device->sas_addr), task,
2104 task->task_status.resp,
2105 task->task_status.stat);
2106 sas_free_task(task);
2107
2108 return res;
2109 }
2110
2111 static int
2112 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2113 struct domain_device *device,
2114 int abort_flag, int tag)
2115 {
2116 struct hisi_sas_slot *slot;
2117 struct device *dev = hisi_hba->dev;
2118 struct hisi_sas_dq *dq;
2119 int i, rc;
2120
2121 switch (abort_flag) {
2122 case HISI_SAS_INT_ABT_CMD:
2123 slot = &hisi_hba->slot_info[tag];
2124 dq = &hisi_hba->dq[slot->dlvry_queue];
2125 return _hisi_sas_internal_task_abort(hisi_hba, device,
2126 abort_flag, tag, dq);
2127 case HISI_SAS_INT_ABT_DEV:
2128 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2129 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2130 const struct cpumask *mask = cq->pci_irq_mask;
2131
2132 if (mask && !cpumask_intersects(cpu_online_mask, mask))
2133 continue;
2134 dq = &hisi_hba->dq[i];
2135 rc = _hisi_sas_internal_task_abort(hisi_hba, device,
2136 abort_flag, tag,
2137 dq);
2138 if (rc)
2139 return rc;
2140 }
2141 break;
2142 default:
2143 dev_err(dev, "Unrecognised internal abort flag (%d)\n",
2144 abort_flag);
2145 return -EINVAL;
2146 }
2147
2148 return 0;
2149 }
2150
2151 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
2152 {
2153 hisi_sas_port_notify_formed(sas_phy);
2154 }
2155
2156 static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
2157 u8 reg_index, u8 reg_count, u8 *write_data)
2158 {
2159 struct hisi_hba *hisi_hba = sha->lldd_ha;
2160
2161 if (!hisi_hba->hw->write_gpio)
2162 return -EOPNOTSUPP;
2163
2164 return hisi_hba->hw->write_gpio(hisi_hba, reg_type,
2165 reg_index, reg_count, write_data);
2166 }
2167
2168 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
2169 {
2170 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2171 struct sas_phy *sphy = sas_phy->phy;
2172 unsigned long flags;
2173
2174 phy->phy_attached = 0;
2175 phy->phy_type = 0;
2176 phy->port = NULL;
2177
2178 spin_lock_irqsave(&phy->lock, flags);
2179 if (phy->enable)
2180 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
2181 else
2182 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
2183 spin_unlock_irqrestore(&phy->lock, flags);
2184 }
2185
2186 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
2187 {
2188 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
2189 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2190 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
2191 struct device *dev = hisi_hba->dev;
2192
2193 if (rdy) {
2194
2195 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
2196 hisi_sas_port_notify_formed(sas_phy);
2197 } else {
2198 struct hisi_sas_port *port = phy->port;
2199
2200 if (test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags) ||
2201 phy->in_reset) {
2202 dev_info(dev, "ignore flutter phy%d down\n", phy_no);
2203 return;
2204 }
2205
2206 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
2207 sas_phy_disconnected(sas_phy);
2208
2209 if (port) {
2210 if (phy->phy_type & PORT_TYPE_SAS) {
2211 int port_id = port->id;
2212
2213 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
2214 port_id))
2215 port->port_attached = 0;
2216 } else if (phy->phy_type & PORT_TYPE_SATA)
2217 port->port_attached = 0;
2218 }
2219 hisi_sas_phy_disconnected(phy);
2220 }
2221 }
2222 EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
2223
2224 void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba)
2225 {
2226 int i;
2227
2228 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2229 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2230
2231 tasklet_kill(&cq->tasklet);
2232 }
2233 }
2234 EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets);
2235
2236 int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type)
2237 {
2238 struct hisi_hba *hisi_hba = shost_priv(shost);
2239
2240 if (reset_type != SCSI_ADAPTER_RESET)
2241 return -EOPNOTSUPP;
2242
2243 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
2244
2245 return 0;
2246 }
2247 EXPORT_SYMBOL_GPL(hisi_sas_host_reset);
2248
2249 struct scsi_transport_template *hisi_sas_stt;
2250 EXPORT_SYMBOL_GPL(hisi_sas_stt);
2251
2252 static struct sas_domain_function_template hisi_sas_transport_ops = {
2253 .lldd_dev_found = hisi_sas_dev_found,
2254 .lldd_dev_gone = hisi_sas_dev_gone,
2255 .lldd_execute_task = hisi_sas_queue_command,
2256 .lldd_control_phy = hisi_sas_control_phy,
2257 .lldd_abort_task = hisi_sas_abort_task,
2258 .lldd_abort_task_set = hisi_sas_abort_task_set,
2259 .lldd_clear_aca = hisi_sas_clear_aca,
2260 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
2261 .lldd_lu_reset = hisi_sas_lu_reset,
2262 .lldd_query_task = hisi_sas_query_task,
2263 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
2264 .lldd_port_formed = hisi_sas_port_formed,
2265 .lldd_write_gpio = hisi_sas_write_gpio,
2266 };
2267
2268 void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
2269 {
2270 int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS;
2271 struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint;
2272
2273 for (i = 0; i < hisi_hba->queue_count; i++) {
2274 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2275 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2276 struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i];
2277
2278 s = sizeof(struct hisi_sas_cmd_hdr);
2279 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
2280 memset(&cmd_hdr[j], 0, s);
2281
2282 dq->wr_point = 0;
2283
2284 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2285 memset(hisi_hba->complete_hdr[i], 0, s);
2286 cq->rd_point = 0;
2287 }
2288
2289 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
2290 memset(hisi_hba->initial_fis, 0, s);
2291
2292 s = max_command_entries * sizeof(struct hisi_sas_iost);
2293 memset(hisi_hba->iost, 0, s);
2294
2295 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2296 memset(hisi_hba->breakpoint, 0, s);
2297
2298 s = sizeof(struct hisi_sas_sata_breakpoint);
2299 for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++)
2300 memset(&sata_breakpoint[j], 0, s);
2301 }
2302 EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
2303
2304 int hisi_sas_alloc(struct hisi_hba *hisi_hba)
2305 {
2306 struct device *dev = hisi_hba->dev;
2307 int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS;
2308 int max_command_entries_ru, sz_slot_buf_ru;
2309 int blk_cnt, slots_per_blk;
2310
2311 sema_init(&hisi_hba->sem, 1);
2312 spin_lock_init(&hisi_hba->lock);
2313 for (i = 0; i < hisi_hba->n_phy; i++) {
2314 hisi_sas_phy_init(hisi_hba, i);
2315 hisi_hba->port[i].port_attached = 0;
2316 hisi_hba->port[i].id = -1;
2317 }
2318
2319 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
2320 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
2321 hisi_hba->devices[i].device_id = i;
2322 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT;
2323 }
2324
2325 for (i = 0; i < hisi_hba->queue_count; i++) {
2326 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2327 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2328
2329
2330 cq->id = i;
2331 cq->hisi_hba = hisi_hba;
2332
2333
2334 spin_lock_init(&dq->lock);
2335 INIT_LIST_HEAD(&dq->list);
2336 dq->id = i;
2337 dq->hisi_hba = hisi_hba;
2338
2339
2340 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
2341 hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s,
2342 &hisi_hba->cmd_hdr_dma[i],
2343 GFP_KERNEL);
2344 if (!hisi_hba->cmd_hdr[i])
2345 goto err_out;
2346
2347
2348 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2349 hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s,
2350 &hisi_hba->complete_hdr_dma[i],
2351 GFP_KERNEL);
2352 if (!hisi_hba->complete_hdr[i])
2353 goto err_out;
2354 }
2355
2356 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
2357 hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma,
2358 GFP_KERNEL);
2359 if (!hisi_hba->itct)
2360 goto err_out;
2361
2362 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
2363 sizeof(struct hisi_sas_slot),
2364 GFP_KERNEL);
2365 if (!hisi_hba->slot_info)
2366 goto err_out;
2367
2368
2369 max_command_entries_ru = roundup(max_command_entries, 64);
2370 if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
2371 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
2372 else
2373 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
2374 sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
2375 s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE);
2376 blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
2377 slots_per_blk = s / sz_slot_buf_ru;
2378
2379 for (i = 0; i < blk_cnt; i++) {
2380 int slot_index = i * slots_per_blk;
2381 dma_addr_t buf_dma;
2382 void *buf;
2383
2384 buf = dmam_alloc_coherent(dev, s, &buf_dma,
2385 GFP_KERNEL);
2386 if (!buf)
2387 goto err_out;
2388
2389 for (j = 0; j < slots_per_blk; j++, slot_index++) {
2390 struct hisi_sas_slot *slot;
2391
2392 slot = &hisi_hba->slot_info[slot_index];
2393 slot->buf = buf;
2394 slot->buf_dma = buf_dma;
2395 slot->idx = slot_index;
2396
2397 buf += sz_slot_buf_ru;
2398 buf_dma += sz_slot_buf_ru;
2399 }
2400 }
2401
2402 s = max_command_entries * sizeof(struct hisi_sas_iost);
2403 hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma,
2404 GFP_KERNEL);
2405 if (!hisi_hba->iost)
2406 goto err_out;
2407
2408 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2409 hisi_hba->breakpoint = dmam_alloc_coherent(dev, s,
2410 &hisi_hba->breakpoint_dma,
2411 GFP_KERNEL);
2412 if (!hisi_hba->breakpoint)
2413 goto err_out;
2414
2415 hisi_hba->slot_index_count = max_command_entries;
2416 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
2417 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
2418 if (!hisi_hba->slot_index_tags)
2419 goto err_out;
2420
2421 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
2422 hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
2423 &hisi_hba->initial_fis_dma,
2424 GFP_KERNEL);
2425 if (!hisi_hba->initial_fis)
2426 goto err_out;
2427
2428 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
2429 hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s,
2430 &hisi_hba->sata_breakpoint_dma,
2431 GFP_KERNEL);
2432 if (!hisi_hba->sata_breakpoint)
2433 goto err_out;
2434
2435 hisi_sas_slot_index_init(hisi_hba);
2436 hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
2437
2438 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
2439 if (!hisi_hba->wq) {
2440 dev_err(dev, "sas_alloc: failed to create workqueue\n");
2441 goto err_out;
2442 }
2443
2444 return 0;
2445 err_out:
2446 return -ENOMEM;
2447 }
2448 EXPORT_SYMBOL_GPL(hisi_sas_alloc);
2449
2450 void hisi_sas_free(struct hisi_hba *hisi_hba)
2451 {
2452 int i;
2453
2454 for (i = 0; i < hisi_hba->n_phy; i++) {
2455 struct hisi_sas_phy *phy = &hisi_hba->phy[i];
2456
2457 del_timer_sync(&phy->timer);
2458 }
2459
2460 if (hisi_hba->wq)
2461 destroy_workqueue(hisi_hba->wq);
2462 }
2463 EXPORT_SYMBOL_GPL(hisi_sas_free);
2464
2465 void hisi_sas_rst_work_handler(struct work_struct *work)
2466 {
2467 struct hisi_hba *hisi_hba =
2468 container_of(work, struct hisi_hba, rst_work);
2469
2470 hisi_sas_controller_reset(hisi_hba);
2471 }
2472 EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler);
2473
2474 void hisi_sas_sync_rst_work_handler(struct work_struct *work)
2475 {
2476 struct hisi_sas_rst *rst =
2477 container_of(work, struct hisi_sas_rst, work);
2478
2479 if (!hisi_sas_controller_reset(rst->hisi_hba))
2480 rst->done = true;
2481 complete(rst->completion);
2482 }
2483 EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler);
2484
2485 int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
2486 {
2487 struct device *dev = hisi_hba->dev;
2488 struct platform_device *pdev = hisi_hba->platform_dev;
2489 struct device_node *np = pdev ? pdev->dev.of_node : NULL;
2490 struct clk *refclk;
2491
2492 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
2493 SAS_ADDR_SIZE)) {
2494 dev_err(dev, "could not get property sas-addr\n");
2495 return -ENOENT;
2496 }
2497
2498 if (np) {
2499
2500
2501
2502
2503 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
2504 "hisilicon,sas-syscon");
2505 if (IS_ERR(hisi_hba->ctrl)) {
2506 dev_err(dev, "could not get syscon\n");
2507 return -ENOENT;
2508 }
2509
2510 if (device_property_read_u32(dev, "ctrl-reset-reg",
2511 &hisi_hba->ctrl_reset_reg)) {
2512 dev_err(dev, "could not get property ctrl-reset-reg\n");
2513 return -ENOENT;
2514 }
2515
2516 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
2517 &hisi_hba->ctrl_reset_sts_reg)) {
2518 dev_err(dev, "could not get property ctrl-reset-sts-reg\n");
2519 return -ENOENT;
2520 }
2521
2522 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
2523 &hisi_hba->ctrl_clock_ena_reg)) {
2524 dev_err(dev, "could not get property ctrl-clock-ena-reg\n");
2525 return -ENOENT;
2526 }
2527 }
2528
2529 refclk = devm_clk_get(dev, NULL);
2530 if (IS_ERR(refclk))
2531 dev_dbg(dev, "no ref clk property\n");
2532 else
2533 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
2534
2535 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
2536 dev_err(dev, "could not get property phy-count\n");
2537 return -ENOENT;
2538 }
2539
2540 if (device_property_read_u32(dev, "queue-count",
2541 &hisi_hba->queue_count)) {
2542 dev_err(dev, "could not get property queue-count\n");
2543 return -ENOENT;
2544 }
2545
2546 return 0;
2547 }
2548 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
2549
2550 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
2551 const struct hisi_sas_hw *hw)
2552 {
2553 struct resource *res;
2554 struct Scsi_Host *shost;
2555 struct hisi_hba *hisi_hba;
2556 struct device *dev = &pdev->dev;
2557 int error;
2558
2559 shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
2560 if (!shost) {
2561 dev_err(dev, "scsi host alloc failed\n");
2562 return NULL;
2563 }
2564 hisi_hba = shost_priv(shost);
2565
2566 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
2567 hisi_hba->hw = hw;
2568 hisi_hba->dev = dev;
2569 hisi_hba->platform_dev = pdev;
2570 hisi_hba->shost = shost;
2571 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
2572
2573 timer_setup(&hisi_hba->timer, NULL, 0);
2574
2575 if (hisi_sas_get_fw_info(hisi_hba) < 0)
2576 goto err_out;
2577
2578 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
2579 if (error)
2580 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
2581
2582 if (error) {
2583 dev_err(dev, "No usable DMA addressing method\n");
2584 goto err_out;
2585 }
2586
2587 hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0);
2588 if (IS_ERR(hisi_hba->regs))
2589 goto err_out;
2590
2591 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2592 if (res) {
2593 hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res);
2594 if (IS_ERR(hisi_hba->sgpio_regs))
2595 goto err_out;
2596 }
2597
2598 if (hisi_sas_alloc(hisi_hba)) {
2599 hisi_sas_free(hisi_hba);
2600 goto err_out;
2601 }
2602
2603 return shost;
2604 err_out:
2605 scsi_host_put(shost);
2606 dev_err(dev, "shost alloc failed\n");
2607 return NULL;
2608 }
2609
2610 int hisi_sas_probe(struct platform_device *pdev,
2611 const struct hisi_sas_hw *hw)
2612 {
2613 struct Scsi_Host *shost;
2614 struct hisi_hba *hisi_hba;
2615 struct device *dev = &pdev->dev;
2616 struct asd_sas_phy **arr_phy;
2617 struct asd_sas_port **arr_port;
2618 struct sas_ha_struct *sha;
2619 int rc, phy_nr, port_nr, i;
2620
2621 shost = hisi_sas_shost_alloc(pdev, hw);
2622 if (!shost)
2623 return -ENOMEM;
2624
2625 sha = SHOST_TO_SAS_HA(shost);
2626 hisi_hba = shost_priv(shost);
2627 platform_set_drvdata(pdev, sha);
2628
2629 phy_nr = port_nr = hisi_hba->n_phy;
2630
2631 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
2632 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
2633 if (!arr_phy || !arr_port) {
2634 rc = -ENOMEM;
2635 goto err_out_ha;
2636 }
2637
2638 sha->sas_phy = arr_phy;
2639 sha->sas_port = arr_port;
2640 sha->lldd_ha = hisi_hba;
2641
2642 shost->transportt = hisi_sas_stt;
2643 shost->max_id = HISI_SAS_MAX_DEVICES;
2644 shost->max_lun = ~0;
2645 shost->max_channel = 1;
2646 shost->max_cmd_len = 16;
2647 if (hisi_hba->hw->slot_index_alloc) {
2648 shost->can_queue = HISI_SAS_MAX_COMMANDS;
2649 shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS;
2650 } else {
2651 shost->can_queue = HISI_SAS_UNRESERVED_IPTT;
2652 shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT;
2653 }
2654
2655 sha->sas_ha_name = DRV_NAME;
2656 sha->dev = hisi_hba->dev;
2657 sha->lldd_module = THIS_MODULE;
2658 sha->sas_addr = &hisi_hba->sas_addr[0];
2659 sha->num_phys = hisi_hba->n_phy;
2660 sha->core.shost = hisi_hba->shost;
2661
2662 for (i = 0; i < hisi_hba->n_phy; i++) {
2663 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
2664 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
2665 }
2666
2667 rc = scsi_add_host(shost, &pdev->dev);
2668 if (rc)
2669 goto err_out_ha;
2670
2671 rc = sas_register_ha(sha);
2672 if (rc)
2673 goto err_out_register_ha;
2674
2675 rc = hisi_hba->hw->hw_init(hisi_hba);
2676 if (rc)
2677 goto err_out_register_ha;
2678
2679 scsi_scan_host(shost);
2680
2681 return 0;
2682
2683 err_out_register_ha:
2684 scsi_remove_host(shost);
2685 err_out_ha:
2686 hisi_sas_debugfs_exit(hisi_hba);
2687 hisi_sas_free(hisi_hba);
2688 scsi_host_put(shost);
2689 return rc;
2690 }
2691 EXPORT_SYMBOL_GPL(hisi_sas_probe);
2692
2693 struct dentry *hisi_sas_debugfs_dir;
2694
2695 static void hisi_sas_debugfs_snapshot_cq_reg(struct hisi_hba *hisi_hba)
2696 {
2697 int queue_entry_size = hisi_hba->hw->complete_hdr_size;
2698 int i;
2699
2700 for (i = 0; i < hisi_hba->queue_count; i++)
2701 memcpy(hisi_hba->debugfs_complete_hdr[i],
2702 hisi_hba->complete_hdr[i],
2703 HISI_SAS_QUEUE_SLOTS * queue_entry_size);
2704 }
2705
2706 static void hisi_sas_debugfs_snapshot_dq_reg(struct hisi_hba *hisi_hba)
2707 {
2708 int queue_entry_size = sizeof(struct hisi_sas_cmd_hdr);
2709 int i;
2710
2711 for (i = 0; i < hisi_hba->queue_count; i++) {
2712 struct hisi_sas_cmd_hdr *debugfs_cmd_hdr, *cmd_hdr;
2713 int j;
2714
2715 debugfs_cmd_hdr = hisi_hba->debugfs_cmd_hdr[i];
2716 cmd_hdr = hisi_hba->cmd_hdr[i];
2717
2718 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
2719 memcpy(&debugfs_cmd_hdr[j], &cmd_hdr[j],
2720 queue_entry_size);
2721 }
2722 }
2723
2724 static void hisi_sas_debugfs_snapshot_port_reg(struct hisi_hba *hisi_hba)
2725 {
2726 const struct hisi_sas_debugfs_reg *port =
2727 hisi_hba->hw->debugfs_reg_port;
2728 int i, phy_cnt;
2729 u32 offset;
2730 u32 *databuf;
2731
2732 for (phy_cnt = 0; phy_cnt < hisi_hba->n_phy; phy_cnt++) {
2733 databuf = (u32 *)hisi_hba->debugfs_port_reg[phy_cnt];
2734 for (i = 0; i < port->count; i++, databuf++) {
2735 offset = port->base_off + 4 * i;
2736 *databuf = port->read_port_reg(hisi_hba, phy_cnt,
2737 offset);
2738 }
2739 }
2740 }
2741
2742 static void hisi_sas_debugfs_snapshot_global_reg(struct hisi_hba *hisi_hba)
2743 {
2744 u32 *databuf = hisi_hba->debugfs_regs[DEBUGFS_GLOBAL];
2745 const struct hisi_sas_hw *hw = hisi_hba->hw;
2746 const struct hisi_sas_debugfs_reg *global =
2747 hw->debugfs_reg_array[DEBUGFS_GLOBAL];
2748 int i;
2749
2750 for (i = 0; i < global->count; i++, databuf++)
2751 *databuf = global->read_global_reg(hisi_hba, 4 * i);
2752 }
2753
2754 static void hisi_sas_debugfs_snapshot_axi_reg(struct hisi_hba *hisi_hba)
2755 {
2756 u32 *databuf = hisi_hba->debugfs_regs[DEBUGFS_AXI];
2757 const struct hisi_sas_hw *hw = hisi_hba->hw;
2758 const struct hisi_sas_debugfs_reg *axi =
2759 hw->debugfs_reg_array[DEBUGFS_AXI];
2760 int i;
2761
2762 for (i = 0; i < axi->count; i++, databuf++)
2763 *databuf = axi->read_global_reg(hisi_hba,
2764 4 * i + axi->base_off);
2765 }
2766
2767 static void hisi_sas_debugfs_snapshot_ras_reg(struct hisi_hba *hisi_hba)
2768 {
2769 u32 *databuf = hisi_hba->debugfs_regs[DEBUGFS_RAS];
2770 const struct hisi_sas_hw *hw = hisi_hba->hw;
2771 const struct hisi_sas_debugfs_reg *ras =
2772 hw->debugfs_reg_array[DEBUGFS_RAS];
2773 int i;
2774
2775 for (i = 0; i < ras->count; i++, databuf++)
2776 *databuf = ras->read_global_reg(hisi_hba,
2777 4 * i + ras->base_off);
2778 }
2779
2780 static void hisi_sas_debugfs_snapshot_itct_reg(struct hisi_hba *hisi_hba)
2781 {
2782 void *cachebuf = hisi_hba->debugfs_itct_cache;
2783 void *databuf = hisi_hba->debugfs_itct;
2784 struct hisi_sas_itct *itct;
2785 int i;
2786
2787 hisi_hba->hw->read_iost_itct_cache(hisi_hba, HISI_SAS_ITCT_CACHE,
2788 cachebuf);
2789
2790 itct = hisi_hba->itct;
2791
2792 for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
2793 memcpy(databuf, itct, sizeof(struct hisi_sas_itct));
2794 databuf += sizeof(struct hisi_sas_itct);
2795 }
2796 }
2797
2798 static void hisi_sas_debugfs_snapshot_iost_reg(struct hisi_hba *hisi_hba)
2799 {
2800 int max_command_entries = HISI_SAS_MAX_COMMANDS;
2801 void *cachebuf = hisi_hba->debugfs_iost_cache;
2802 void *databuf = hisi_hba->debugfs_iost;
2803 struct hisi_sas_iost *iost;
2804 int i;
2805
2806 hisi_hba->hw->read_iost_itct_cache(hisi_hba, HISI_SAS_IOST_CACHE,
2807 cachebuf);
2808
2809 iost = hisi_hba->iost;
2810
2811 for (i = 0; i < max_command_entries; i++, iost++) {
2812 memcpy(databuf, iost, sizeof(struct hisi_sas_iost));
2813 databuf += sizeof(struct hisi_sas_iost);
2814 }
2815 }
2816
2817 static const char *
2818 hisi_sas_debugfs_to_reg_name(int off, int base_off,
2819 const struct hisi_sas_debugfs_reg_lu *lu)
2820 {
2821 for (; lu->name; lu++) {
2822 if (off == lu->off - base_off)
2823 return lu->name;
2824 }
2825
2826 return NULL;
2827 }
2828
2829 static void hisi_sas_debugfs_print_reg(u32 *regs_val, const void *ptr,
2830 struct seq_file *s)
2831 {
2832 const struct hisi_sas_debugfs_reg *reg = ptr;
2833 int i;
2834
2835 for (i = 0; i < reg->count; i++) {
2836 int off = i * 4;
2837 const char *name;
2838
2839 name = hisi_sas_debugfs_to_reg_name(off, reg->base_off,
2840 reg->lu);
2841
2842 if (name)
2843 seq_printf(s, "0x%08x 0x%08x %s\n", off,
2844 regs_val[i], name);
2845 else
2846 seq_printf(s, "0x%08x 0x%08x\n", off,
2847 regs_val[i]);
2848 }
2849 }
2850
2851 static int hisi_sas_debugfs_global_show(struct seq_file *s, void *p)
2852 {
2853 struct hisi_hba *hisi_hba = s->private;
2854 const struct hisi_sas_hw *hw = hisi_hba->hw;
2855 const void *reg_global = hw->debugfs_reg_array[DEBUGFS_GLOBAL];
2856
2857 hisi_sas_debugfs_print_reg(hisi_hba->debugfs_regs[DEBUGFS_GLOBAL],
2858 reg_global, s);
2859
2860 return 0;
2861 }
2862
2863 static int hisi_sas_debugfs_global_open(struct inode *inode, struct file *filp)
2864 {
2865 return single_open(filp, hisi_sas_debugfs_global_show,
2866 inode->i_private);
2867 }
2868
2869 static const struct file_operations hisi_sas_debugfs_global_fops = {
2870 .open = hisi_sas_debugfs_global_open,
2871 .read = seq_read,
2872 .llseek = seq_lseek,
2873 .release = single_release,
2874 .owner = THIS_MODULE,
2875 };
2876
2877 static int hisi_sas_debugfs_axi_show(struct seq_file *s, void *p)
2878 {
2879 struct hisi_hba *hisi_hba = s->private;
2880 const struct hisi_sas_hw *hw = hisi_hba->hw;
2881 const void *reg_axi = hw->debugfs_reg_array[DEBUGFS_AXI];
2882
2883 hisi_sas_debugfs_print_reg(hisi_hba->debugfs_regs[DEBUGFS_AXI],
2884 reg_axi, s);
2885
2886 return 0;
2887 }
2888
2889 static int hisi_sas_debugfs_axi_open(struct inode *inode, struct file *filp)
2890 {
2891 return single_open(filp, hisi_sas_debugfs_axi_show,
2892 inode->i_private);
2893 }
2894
2895 static const struct file_operations hisi_sas_debugfs_axi_fops = {
2896 .open = hisi_sas_debugfs_axi_open,
2897 .read = seq_read,
2898 .llseek = seq_lseek,
2899 .release = single_release,
2900 .owner = THIS_MODULE,
2901 };
2902
2903 static int hisi_sas_debugfs_ras_show(struct seq_file *s, void *p)
2904 {
2905 struct hisi_hba *hisi_hba = s->private;
2906 const struct hisi_sas_hw *hw = hisi_hba->hw;
2907 const void *reg_ras = hw->debugfs_reg_array[DEBUGFS_RAS];
2908
2909 hisi_sas_debugfs_print_reg(hisi_hba->debugfs_regs[DEBUGFS_RAS],
2910 reg_ras, s);
2911
2912 return 0;
2913 }
2914
2915 static int hisi_sas_debugfs_ras_open(struct inode *inode, struct file *filp)
2916 {
2917 return single_open(filp, hisi_sas_debugfs_ras_show,
2918 inode->i_private);
2919 }
2920
2921 static const struct file_operations hisi_sas_debugfs_ras_fops = {
2922 .open = hisi_sas_debugfs_ras_open,
2923 .read = seq_read,
2924 .llseek = seq_lseek,
2925 .release = single_release,
2926 .owner = THIS_MODULE,
2927 };
2928
2929 static int hisi_sas_debugfs_port_show(struct seq_file *s, void *p)
2930 {
2931 struct hisi_sas_phy *phy = s->private;
2932 struct hisi_hba *hisi_hba = phy->hisi_hba;
2933 const struct hisi_sas_hw *hw = hisi_hba->hw;
2934 const struct hisi_sas_debugfs_reg *reg_port = hw->debugfs_reg_port;
2935 u32 *databuf = hisi_hba->debugfs_port_reg[phy->sas_phy.id];
2936
2937 hisi_sas_debugfs_print_reg(databuf, reg_port, s);
2938
2939 return 0;
2940 }
2941
2942 static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
2943 {
2944 return single_open(filp, hisi_sas_debugfs_port_show, inode->i_private);
2945 }
2946
2947 static const struct file_operations hisi_sas_debugfs_port_fops = {
2948 .open = hisi_sas_debugfs_port_open,
2949 .read = seq_read,
2950 .llseek = seq_lseek,
2951 .release = single_release,
2952 .owner = THIS_MODULE,
2953 };
2954
2955 static void hisi_sas_show_row_64(struct seq_file *s, int index,
2956 int sz, __le64 *ptr)
2957 {
2958 int i;
2959
2960
2961 seq_printf(s, "index %04d:\n\t", index);
2962 for (i = 1; i <= sz / 8; i++, ptr++) {
2963 seq_printf(s, " 0x%016llx", le64_to_cpu(*ptr));
2964 if (!(i % 2))
2965 seq_puts(s, "\n\t");
2966 }
2967
2968 seq_puts(s, "\n");
2969 }
2970
2971 static void hisi_sas_show_row_32(struct seq_file *s, int index,
2972 int sz, __le32 *ptr)
2973 {
2974 int i;
2975
2976
2977 seq_printf(s, "index %04d:\n\t", index);
2978 for (i = 1; i <= sz / 4; i++, ptr++) {
2979 seq_printf(s, " 0x%08x", le32_to_cpu(*ptr));
2980 if (!(i % 4))
2981 seq_puts(s, "\n\t");
2982 }
2983 seq_puts(s, "\n");
2984 }
2985
2986 static void hisi_sas_cq_show_slot(struct seq_file *s, int slot, void *cq_ptr)
2987 {
2988 struct hisi_sas_cq *cq = cq_ptr;
2989 struct hisi_hba *hisi_hba = cq->hisi_hba;
2990 void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id];
2991 __le32 *complete_hdr = complete_queue +
2992 (hisi_hba->hw->complete_hdr_size * slot);
2993
2994 hisi_sas_show_row_32(s, slot,
2995 hisi_hba->hw->complete_hdr_size,
2996 complete_hdr);
2997 }
2998
2999 static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p)
3000 {
3001 struct hisi_sas_cq *cq = s->private;
3002 int slot;
3003
3004 for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
3005 hisi_sas_cq_show_slot(s, slot, cq);
3006 }
3007 return 0;
3008 }
3009
3010 static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp)
3011 {
3012 return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private);
3013 }
3014
3015 static const struct file_operations hisi_sas_debugfs_cq_fops = {
3016 .open = hisi_sas_debugfs_cq_open,
3017 .read = seq_read,
3018 .llseek = seq_lseek,
3019 .release = single_release,
3020 .owner = THIS_MODULE,
3021 };
3022
3023 static void hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
3024 {
3025 struct hisi_sas_dq *dq = dq_ptr;
3026 struct hisi_hba *hisi_hba = dq->hisi_hba;
3027 void *cmd_queue = hisi_hba->debugfs_cmd_hdr[dq->id];
3028 __le32 *cmd_hdr = cmd_queue +
3029 sizeof(struct hisi_sas_cmd_hdr) * slot;
3030
3031 hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr), cmd_hdr);
3032 }
3033
3034 static int hisi_sas_debugfs_dq_show(struct seq_file *s, void *p)
3035 {
3036 int slot;
3037
3038 for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
3039 hisi_sas_dq_show_slot(s, slot, s->private);
3040 }
3041 return 0;
3042 }
3043
3044 static int hisi_sas_debugfs_dq_open(struct inode *inode, struct file *filp)
3045 {
3046 return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
3047 }
3048
3049 static const struct file_operations hisi_sas_debugfs_dq_fops = {
3050 .open = hisi_sas_debugfs_dq_open,
3051 .read = seq_read,
3052 .llseek = seq_lseek,
3053 .release = single_release,
3054 .owner = THIS_MODULE,
3055 };
3056
3057 static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
3058 {
3059 struct hisi_hba *hisi_hba = s->private;
3060 struct hisi_sas_iost *debugfs_iost = hisi_hba->debugfs_iost;
3061 int i, max_command_entries = HISI_SAS_MAX_COMMANDS;
3062
3063 for (i = 0; i < max_command_entries; i++, debugfs_iost++) {
3064 __le64 *iost = &debugfs_iost->qw0;
3065
3066 hisi_sas_show_row_64(s, i, sizeof(*debugfs_iost), iost);
3067 }
3068
3069 return 0;
3070 }
3071
3072 static int hisi_sas_debugfs_iost_open(struct inode *inode, struct file *filp)
3073 {
3074 return single_open(filp, hisi_sas_debugfs_iost_show, inode->i_private);
3075 }
3076
3077 static const struct file_operations hisi_sas_debugfs_iost_fops = {
3078 .open = hisi_sas_debugfs_iost_open,
3079 .read = seq_read,
3080 .llseek = seq_lseek,
3081 .release = single_release,
3082 .owner = THIS_MODULE,
3083 };
3084
3085 static int hisi_sas_debugfs_iost_cache_show(struct seq_file *s, void *p)
3086 {
3087 struct hisi_hba *hisi_hba = s->private;
3088 struct hisi_sas_iost_itct_cache *iost_cache =
3089 (struct hisi_sas_iost_itct_cache *)hisi_hba->debugfs_iost_cache;
3090 u32 cache_size = HISI_SAS_IOST_ITCT_CACHE_DW_SZ * 4;
3091 int i, tab_idx;
3092 __le64 *iost;
3093
3094 for (i = 0; i < HISI_SAS_IOST_ITCT_CACHE_NUM; i++, iost_cache++) {
3095
3096
3097
3098
3099
3100
3101 tab_idx = (iost_cache->data[1] & 0xffff);
3102 iost = (__le64 *)iost_cache;
3103
3104 hisi_sas_show_row_64(s, tab_idx, cache_size, iost);
3105 }
3106
3107 return 0;
3108 }
3109
3110 static int hisi_sas_debugfs_iost_cache_open(struct inode *inode,
3111 struct file *filp)
3112 {
3113 return single_open(filp, hisi_sas_debugfs_iost_cache_show,
3114 inode->i_private);
3115 }
3116
3117 static const struct file_operations hisi_sas_debugfs_iost_cache_fops = {
3118 .open = hisi_sas_debugfs_iost_cache_open,
3119 .read = seq_read,
3120 .llseek = seq_lseek,
3121 .release = single_release,
3122 .owner = THIS_MODULE,
3123 };
3124
3125 static int hisi_sas_debugfs_itct_show(struct seq_file *s, void *p)
3126 {
3127 int i;
3128 struct hisi_hba *hisi_hba = s->private;
3129 struct hisi_sas_itct *debugfs_itct = hisi_hba->debugfs_itct;
3130
3131 for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, debugfs_itct++) {
3132 __le64 *itct = &debugfs_itct->qw0;
3133
3134 hisi_sas_show_row_64(s, i, sizeof(*debugfs_itct), itct);
3135 }
3136
3137 return 0;
3138 }
3139
3140 static int hisi_sas_debugfs_itct_open(struct inode *inode, struct file *filp)
3141 {
3142 return single_open(filp, hisi_sas_debugfs_itct_show, inode->i_private);
3143 }
3144
3145 static const struct file_operations hisi_sas_debugfs_itct_fops = {
3146 .open = hisi_sas_debugfs_itct_open,
3147 .read = seq_read,
3148 .llseek = seq_lseek,
3149 .release = single_release,
3150 .owner = THIS_MODULE,
3151 };
3152
3153 static int hisi_sas_debugfs_itct_cache_show(struct seq_file *s, void *p)
3154 {
3155 struct hisi_hba *hisi_hba = s->private;
3156 struct hisi_sas_iost_itct_cache *itct_cache =
3157 (struct hisi_sas_iost_itct_cache *)hisi_hba->debugfs_itct_cache;
3158 u32 cache_size = HISI_SAS_IOST_ITCT_CACHE_DW_SZ * 4;
3159 int i, tab_idx;
3160 __le64 *itct;
3161
3162 for (i = 0; i < HISI_SAS_IOST_ITCT_CACHE_NUM; i++, itct_cache++) {
3163
3164
3165
3166
3167
3168
3169 tab_idx = itct_cache->data[1] & 0xffff;
3170 itct = (__le64 *)itct_cache;
3171
3172 hisi_sas_show_row_64(s, tab_idx, cache_size, itct);
3173 }
3174
3175 return 0;
3176 }
3177
3178 static int hisi_sas_debugfs_itct_cache_open(struct inode *inode,
3179 struct file *filp)
3180 {
3181 return single_open(filp, hisi_sas_debugfs_itct_cache_show,
3182 inode->i_private);
3183 }
3184
3185 static const struct file_operations hisi_sas_debugfs_itct_cache_fops = {
3186 .open = hisi_sas_debugfs_itct_cache_open,
3187 .read = seq_read,
3188 .llseek = seq_lseek,
3189 .release = single_release,
3190 .owner = THIS_MODULE,
3191 };
3192
3193 static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
3194 {
3195 struct dentry *dump_dentry;
3196 struct dentry *dentry;
3197 char name[256];
3198 int p;
3199 int c;
3200 int d;
3201
3202
3203 dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
3204 hisi_hba->debugfs_dump_dentry = dump_dentry;
3205
3206 debugfs_create_file("global", 0400, dump_dentry, hisi_hba,
3207 &hisi_sas_debugfs_global_fops);
3208
3209
3210 dentry = debugfs_create_dir("port", dump_dentry);
3211 for (p = 0; p < hisi_hba->n_phy; p++) {
3212 snprintf(name, 256, "%d", p);
3213
3214 debugfs_create_file(name, 0400, dentry, &hisi_hba->phy[p],
3215 &hisi_sas_debugfs_port_fops);
3216 }
3217
3218
3219 dentry = debugfs_create_dir("cq", dump_dentry);
3220 for (c = 0; c < hisi_hba->queue_count; c++) {
3221 snprintf(name, 256, "%d", c);
3222
3223 debugfs_create_file(name, 0400, dentry, &hisi_hba->cq[c],
3224 &hisi_sas_debugfs_cq_fops);
3225 }
3226
3227
3228 dentry = debugfs_create_dir("dq", dump_dentry);
3229 for (d = 0; d < hisi_hba->queue_count; d++) {
3230 snprintf(name, 256, "%d", d);
3231
3232 debugfs_create_file(name, 0400, dentry, &hisi_hba->dq[d],
3233 &hisi_sas_debugfs_dq_fops);
3234 }
3235
3236 debugfs_create_file("iost", 0400, dump_dentry, hisi_hba,
3237 &hisi_sas_debugfs_iost_fops);
3238
3239 debugfs_create_file("iost_cache", 0400, dump_dentry, hisi_hba,
3240 &hisi_sas_debugfs_iost_cache_fops);
3241
3242 debugfs_create_file("itct", 0400, dump_dentry, hisi_hba,
3243 &hisi_sas_debugfs_itct_fops);
3244
3245 debugfs_create_file("itct_cache", 0400, dump_dentry, hisi_hba,
3246 &hisi_sas_debugfs_itct_cache_fops);
3247
3248 debugfs_create_file("axi", 0400, dump_dentry, hisi_hba,
3249 &hisi_sas_debugfs_axi_fops);
3250
3251 debugfs_create_file("ras", 0400, dump_dentry, hisi_hba,
3252 &hisi_sas_debugfs_ras_fops);
3253
3254 return;
3255 }
3256
3257 static void hisi_sas_debugfs_snapshot_regs(struct hisi_hba *hisi_hba)
3258 {
3259 hisi_hba->hw->snapshot_prepare(hisi_hba);
3260
3261 hisi_sas_debugfs_snapshot_global_reg(hisi_hba);
3262 hisi_sas_debugfs_snapshot_port_reg(hisi_hba);
3263 hisi_sas_debugfs_snapshot_axi_reg(hisi_hba);
3264 hisi_sas_debugfs_snapshot_ras_reg(hisi_hba);
3265 hisi_sas_debugfs_snapshot_cq_reg(hisi_hba);
3266 hisi_sas_debugfs_snapshot_dq_reg(hisi_hba);
3267 hisi_sas_debugfs_snapshot_itct_reg(hisi_hba);
3268 hisi_sas_debugfs_snapshot_iost_reg(hisi_hba);
3269
3270 hisi_sas_debugfs_create_files(hisi_hba);
3271
3272 hisi_hba->hw->snapshot_restore(hisi_hba);
3273 }
3274
3275 static ssize_t hisi_sas_debugfs_trigger_dump_write(struct file *file,
3276 const char __user *user_buf,
3277 size_t count, loff_t *ppos)
3278 {
3279 struct hisi_hba *hisi_hba = file->f_inode->i_private;
3280 char buf[8];
3281
3282
3283 if (hisi_hba->debugfs_snapshot)
3284 return -EFAULT;
3285
3286 if (count > 8)
3287 return -EFAULT;
3288
3289 if (copy_from_user(buf, user_buf, count))
3290 return -EFAULT;
3291
3292 if (buf[0] != '1')
3293 return -EFAULT;
3294
3295 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
3296
3297 return count;
3298 }
3299
3300 static const struct file_operations hisi_sas_debugfs_trigger_dump_fops = {
3301 .write = &hisi_sas_debugfs_trigger_dump_write,
3302 .owner = THIS_MODULE,
3303 };
3304
3305 enum {
3306 HISI_SAS_BIST_LOOPBACK_MODE_DIGITAL = 0,
3307 HISI_SAS_BIST_LOOPBACK_MODE_SERDES,
3308 HISI_SAS_BIST_LOOPBACK_MODE_REMOTE,
3309 };
3310
3311 enum {
3312 HISI_SAS_BIST_CODE_MODE_PRBS7 = 0,
3313 HISI_SAS_BIST_CODE_MODE_PRBS23,
3314 HISI_SAS_BIST_CODE_MODE_PRBS31,
3315 HISI_SAS_BIST_CODE_MODE_JTPAT,
3316 HISI_SAS_BIST_CODE_MODE_CJTPAT,
3317 HISI_SAS_BIST_CODE_MODE_SCRAMBED_0,
3318 HISI_SAS_BIST_CODE_MODE_TRAIN,
3319 HISI_SAS_BIST_CODE_MODE_TRAIN_DONE,
3320 HISI_SAS_BIST_CODE_MODE_HFTP,
3321 HISI_SAS_BIST_CODE_MODE_MFTP,
3322 HISI_SAS_BIST_CODE_MODE_LFTP,
3323 HISI_SAS_BIST_CODE_MODE_FIXED_DATA,
3324 };
3325
3326 static const struct {
3327 int value;
3328 char *name;
3329 } hisi_sas_debugfs_loop_linkrate[] = {
3330 { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
3331 { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
3332 { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
3333 { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" },
3334 };
3335
3336 static int hisi_sas_debugfs_bist_linkrate_show(struct seq_file *s, void *p)
3337 {
3338 struct hisi_hba *hisi_hba = s->private;
3339 int i;
3340
3341 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_linkrate); i++) {
3342 int match = (hisi_hba->debugfs_bist_linkrate ==
3343 hisi_sas_debugfs_loop_linkrate[i].value);
3344
3345 seq_printf(s, "%s%s%s ", match ? "[" : "",
3346 hisi_sas_debugfs_loop_linkrate[i].name,
3347 match ? "]" : "");
3348 }
3349 seq_puts(s, "\n");
3350
3351 return 0;
3352 }
3353
3354 static ssize_t hisi_sas_debugfs_bist_linkrate_write(struct file *filp,
3355 const char __user *buf,
3356 size_t count, loff_t *ppos)
3357 {
3358 struct seq_file *m = filp->private_data;
3359 struct hisi_hba *hisi_hba = m->private;
3360 char kbuf[16] = {}, *pkbuf;
3361 bool found = false;
3362 int i;
3363
3364 if (hisi_hba->debugfs_bist_enable)
3365 return -EPERM;
3366
3367 if (count >= sizeof(kbuf))
3368 return -EOVERFLOW;
3369
3370 if (copy_from_user(kbuf, buf, count))
3371 return -EINVAL;
3372
3373 pkbuf = strstrip(kbuf);
3374
3375 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_linkrate); i++) {
3376 if (!strncmp(hisi_sas_debugfs_loop_linkrate[i].name,
3377 pkbuf, 16)) {
3378 hisi_hba->debugfs_bist_linkrate =
3379 hisi_sas_debugfs_loop_linkrate[i].value;
3380 found = true;
3381 break;
3382 }
3383 }
3384
3385 if (!found)
3386 return -EINVAL;
3387
3388 return count;
3389 }
3390
3391 static int hisi_sas_debugfs_bist_linkrate_open(struct inode *inode,
3392 struct file *filp)
3393 {
3394 return single_open(filp, hisi_sas_debugfs_bist_linkrate_show,
3395 inode->i_private);
3396 }
3397
3398 static const struct file_operations hisi_sas_debugfs_bist_linkrate_ops = {
3399 .open = hisi_sas_debugfs_bist_linkrate_open,
3400 .read = seq_read,
3401 .write = hisi_sas_debugfs_bist_linkrate_write,
3402 .llseek = seq_lseek,
3403 .release = single_release,
3404 .owner = THIS_MODULE,
3405 };
3406
3407 static const struct {
3408 int value;
3409 char *name;
3410 } hisi_sas_debugfs_loop_code_mode[] = {
3411 { HISI_SAS_BIST_CODE_MODE_PRBS7, "PRBS7" },
3412 { HISI_SAS_BIST_CODE_MODE_PRBS23, "PRBS23" },
3413 { HISI_SAS_BIST_CODE_MODE_PRBS31, "PRBS31" },
3414 { HISI_SAS_BIST_CODE_MODE_JTPAT, "JTPAT" },
3415 { HISI_SAS_BIST_CODE_MODE_CJTPAT, "CJTPAT" },
3416 { HISI_SAS_BIST_CODE_MODE_SCRAMBED_0, "SCRAMBED_0" },
3417 { HISI_SAS_BIST_CODE_MODE_TRAIN, "TRAIN" },
3418 { HISI_SAS_BIST_CODE_MODE_TRAIN_DONE, "TRAIN_DONE" },
3419 { HISI_SAS_BIST_CODE_MODE_HFTP, "HFTP" },
3420 { HISI_SAS_BIST_CODE_MODE_MFTP, "MFTP" },
3421 { HISI_SAS_BIST_CODE_MODE_LFTP, "LFTP" },
3422 { HISI_SAS_BIST_CODE_MODE_FIXED_DATA, "FIXED_DATA" },
3423 };
3424
3425 static int hisi_sas_debugfs_bist_code_mode_show(struct seq_file *s, void *p)
3426 {
3427 struct hisi_hba *hisi_hba = s->private;
3428 int i;
3429
3430 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_code_mode); i++) {
3431 int match = (hisi_hba->debugfs_bist_code_mode ==
3432 hisi_sas_debugfs_loop_code_mode[i].value);
3433
3434 seq_printf(s, "%s%s%s ", match ? "[" : "",
3435 hisi_sas_debugfs_loop_code_mode[i].name,
3436 match ? "]" : "");
3437 }
3438 seq_puts(s, "\n");
3439
3440 return 0;
3441 }
3442
3443 static ssize_t hisi_sas_debugfs_bist_code_mode_write(struct file *filp,
3444 const char __user *buf,
3445 size_t count,
3446 loff_t *ppos)
3447 {
3448 struct seq_file *m = filp->private_data;
3449 struct hisi_hba *hisi_hba = m->private;
3450 char kbuf[16] = {}, *pkbuf;
3451 bool found = false;
3452 int i;
3453
3454 if (hisi_hba->debugfs_bist_enable)
3455 return -EPERM;
3456
3457 if (count >= sizeof(kbuf))
3458 return -EINVAL;
3459
3460 if (copy_from_user(kbuf, buf, count))
3461 return -EOVERFLOW;
3462
3463 pkbuf = strstrip(kbuf);
3464
3465 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_code_mode); i++) {
3466 if (!strncmp(hisi_sas_debugfs_loop_code_mode[i].name,
3467 pkbuf, 16)) {
3468 hisi_hba->debugfs_bist_code_mode =
3469 hisi_sas_debugfs_loop_code_mode[i].value;
3470 found = true;
3471 break;
3472 }
3473 }
3474
3475 if (!found)
3476 return -EINVAL;
3477
3478 return count;
3479 }
3480
3481 static int hisi_sas_debugfs_bist_code_mode_open(struct inode *inode,
3482 struct file *filp)
3483 {
3484 return single_open(filp, hisi_sas_debugfs_bist_code_mode_show,
3485 inode->i_private);
3486 }
3487
3488 static const struct file_operations hisi_sas_debugfs_bist_code_mode_ops = {
3489 .open = hisi_sas_debugfs_bist_code_mode_open,
3490 .read = seq_read,
3491 .write = hisi_sas_debugfs_bist_code_mode_write,
3492 .llseek = seq_lseek,
3493 .release = single_release,
3494 .owner = THIS_MODULE,
3495 };
3496
3497 static ssize_t hisi_sas_debugfs_bist_phy_write(struct file *filp,
3498 const char __user *buf,
3499 size_t count, loff_t *ppos)
3500 {
3501 struct seq_file *m = filp->private_data;
3502 struct hisi_hba *hisi_hba = m->private;
3503 unsigned int phy_no;
3504 int val;
3505
3506 if (hisi_hba->debugfs_bist_enable)
3507 return -EPERM;
3508
3509 val = kstrtouint_from_user(buf, count, 0, &phy_no);
3510 if (val)
3511 return val;
3512
3513 if (phy_no >= hisi_hba->n_phy)
3514 return -EINVAL;
3515
3516 hisi_hba->debugfs_bist_phy_no = phy_no;
3517
3518 return count;
3519 }
3520
3521 static int hisi_sas_debugfs_bist_phy_show(struct seq_file *s, void *p)
3522 {
3523 struct hisi_hba *hisi_hba = s->private;
3524
3525 seq_printf(s, "%d\n", hisi_hba->debugfs_bist_phy_no);
3526
3527 return 0;
3528 }
3529
3530 static int hisi_sas_debugfs_bist_phy_open(struct inode *inode,
3531 struct file *filp)
3532 {
3533 return single_open(filp, hisi_sas_debugfs_bist_phy_show,
3534 inode->i_private);
3535 }
3536
3537 static const struct file_operations hisi_sas_debugfs_bist_phy_ops = {
3538 .open = hisi_sas_debugfs_bist_phy_open,
3539 .read = seq_read,
3540 .write = hisi_sas_debugfs_bist_phy_write,
3541 .llseek = seq_lseek,
3542 .release = single_release,
3543 .owner = THIS_MODULE,
3544 };
3545
3546 static const struct {
3547 int value;
3548 char *name;
3549 } hisi_sas_debugfs_loop_modes[] = {
3550 { HISI_SAS_BIST_LOOPBACK_MODE_DIGITAL, "digial" },
3551 { HISI_SAS_BIST_LOOPBACK_MODE_SERDES, "serdes" },
3552 { HISI_SAS_BIST_LOOPBACK_MODE_REMOTE, "remote" },
3553 };
3554
3555 static int hisi_sas_debugfs_bist_mode_show(struct seq_file *s, void *p)
3556 {
3557 struct hisi_hba *hisi_hba = s->private;
3558 int i;
3559
3560 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_modes); i++) {
3561 int match = (hisi_hba->debugfs_bist_mode ==
3562 hisi_sas_debugfs_loop_modes[i].value);
3563
3564 seq_printf(s, "%s%s%s ", match ? "[" : "",
3565 hisi_sas_debugfs_loop_modes[i].name,
3566 match ? "]" : "");
3567 }
3568 seq_puts(s, "\n");
3569
3570 return 0;
3571 }
3572
3573 static ssize_t hisi_sas_debugfs_bist_mode_write(struct file *filp,
3574 const char __user *buf,
3575 size_t count, loff_t *ppos)
3576 {
3577 struct seq_file *m = filp->private_data;
3578 struct hisi_hba *hisi_hba = m->private;
3579 char kbuf[16] = {}, *pkbuf;
3580 bool found = false;
3581 int i;
3582
3583 if (hisi_hba->debugfs_bist_enable)
3584 return -EPERM;
3585
3586 if (count >= sizeof(kbuf))
3587 return -EINVAL;
3588
3589 if (copy_from_user(kbuf, buf, count))
3590 return -EOVERFLOW;
3591
3592 pkbuf = strstrip(kbuf);
3593
3594 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_modes); i++) {
3595 if (!strncmp(hisi_sas_debugfs_loop_modes[i].name, pkbuf, 16)) {
3596 hisi_hba->debugfs_bist_mode =
3597 hisi_sas_debugfs_loop_modes[i].value;
3598 found = true;
3599 break;
3600 }
3601 }
3602
3603 if (!found)
3604 return -EINVAL;
3605
3606 return count;
3607 }
3608
3609 static int hisi_sas_debugfs_bist_mode_open(struct inode *inode,
3610 struct file *filp)
3611 {
3612 return single_open(filp, hisi_sas_debugfs_bist_mode_show,
3613 inode->i_private);
3614 }
3615
3616 static const struct file_operations hisi_sas_debugfs_bist_mode_ops = {
3617 .open = hisi_sas_debugfs_bist_mode_open,
3618 .read = seq_read,
3619 .write = hisi_sas_debugfs_bist_mode_write,
3620 .llseek = seq_lseek,
3621 .release = single_release,
3622 .owner = THIS_MODULE,
3623 };
3624
3625 static ssize_t hisi_sas_debugfs_bist_enable_write(struct file *filp,
3626 const char __user *buf,
3627 size_t count, loff_t *ppos)
3628 {
3629 struct seq_file *m = filp->private_data;
3630 struct hisi_hba *hisi_hba = m->private;
3631 unsigned int enable;
3632 int val;
3633
3634 val = kstrtouint_from_user(buf, count, 0, &enable);
3635 if (val)
3636 return val;
3637
3638 if (enable > 1)
3639 return -EINVAL;
3640
3641 if (enable == hisi_hba->debugfs_bist_enable)
3642 return count;
3643
3644 if (!hisi_hba->hw->set_bist)
3645 return -EPERM;
3646
3647 val = hisi_hba->hw->set_bist(hisi_hba, enable);
3648 if (val < 0)
3649 return val;
3650
3651 hisi_hba->debugfs_bist_enable = enable;
3652
3653 return count;
3654 }
3655
3656 static int hisi_sas_debugfs_bist_enable_show(struct seq_file *s, void *p)
3657 {
3658 struct hisi_hba *hisi_hba = s->private;
3659
3660 seq_printf(s, "%d\n", hisi_hba->debugfs_bist_enable);
3661
3662 return 0;
3663 }
3664
3665 static int hisi_sas_debugfs_bist_enable_open(struct inode *inode,
3666 struct file *filp)
3667 {
3668 return single_open(filp, hisi_sas_debugfs_bist_enable_show,
3669 inode->i_private);
3670 }
3671
3672 static const struct file_operations hisi_sas_debugfs_bist_enable_ops = {
3673 .open = hisi_sas_debugfs_bist_enable_open,
3674 .read = seq_read,
3675 .write = hisi_sas_debugfs_bist_enable_write,
3676 .llseek = seq_lseek,
3677 .release = single_release,
3678 .owner = THIS_MODULE,
3679 };
3680
3681 void hisi_sas_debugfs_work_handler(struct work_struct *work)
3682 {
3683 struct hisi_hba *hisi_hba =
3684 container_of(work, struct hisi_hba, debugfs_work);
3685
3686 if (hisi_hba->debugfs_snapshot)
3687 return;
3688 hisi_hba->debugfs_snapshot = true;
3689
3690 hisi_sas_debugfs_snapshot_regs(hisi_hba);
3691 }
3692 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_work_handler);
3693
3694 static void hisi_sas_debugfs_release(struct hisi_hba *hisi_hba)
3695 {
3696 struct device *dev = hisi_hba->dev;
3697 int i;
3698
3699 devm_kfree(dev, hisi_hba->debugfs_iost_cache);
3700 devm_kfree(dev, hisi_hba->debugfs_itct_cache);
3701 devm_kfree(dev, hisi_hba->debugfs_iost);
3702
3703 for (i = 0; i < hisi_hba->queue_count; i++)
3704 devm_kfree(dev, hisi_hba->debugfs_cmd_hdr[i]);
3705
3706 for (i = 0; i < hisi_hba->queue_count; i++)
3707 devm_kfree(dev, hisi_hba->debugfs_complete_hdr[i]);
3708
3709 for (i = 0; i < DEBUGFS_REGS_NUM; i++)
3710 devm_kfree(dev, hisi_hba->debugfs_regs[i]);
3711
3712 for (i = 0; i < hisi_hba->n_phy; i++)
3713 devm_kfree(dev, hisi_hba->debugfs_port_reg[i]);
3714 }
3715
3716 static int hisi_sas_debugfs_alloc(struct hisi_hba *hisi_hba)
3717 {
3718 const struct hisi_sas_hw *hw = hisi_hba->hw;
3719 struct device *dev = hisi_hba->dev;
3720 int p, c, d;
3721 size_t sz;
3722
3723 sz = hw->debugfs_reg_array[DEBUGFS_GLOBAL]->count * 4;
3724 hisi_hba->debugfs_regs[DEBUGFS_GLOBAL] =
3725 devm_kmalloc(dev, sz, GFP_KERNEL);
3726
3727 if (!hisi_hba->debugfs_regs[DEBUGFS_GLOBAL])
3728 goto fail;
3729
3730 sz = hw->debugfs_reg_port->count * 4;
3731 for (p = 0; p < hisi_hba->n_phy; p++) {
3732 hisi_hba->debugfs_port_reg[p] =
3733 devm_kmalloc(dev, sz, GFP_KERNEL);
3734
3735 if (!hisi_hba->debugfs_port_reg[p])
3736 goto fail;
3737 }
3738
3739 sz = hw->debugfs_reg_array[DEBUGFS_AXI]->count * 4;
3740 hisi_hba->debugfs_regs[DEBUGFS_AXI] =
3741 devm_kmalloc(dev, sz, GFP_KERNEL);
3742
3743 if (!hisi_hba->debugfs_regs[DEBUGFS_AXI])
3744 goto fail;
3745
3746 sz = hw->debugfs_reg_array[DEBUGFS_RAS]->count * 4;
3747 hisi_hba->debugfs_regs[DEBUGFS_RAS] =
3748 devm_kmalloc(dev, sz, GFP_KERNEL);
3749
3750 if (!hisi_hba->debugfs_regs[DEBUGFS_RAS])
3751 goto fail;
3752
3753 sz = hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
3754 for (c = 0; c < hisi_hba->queue_count; c++) {
3755 hisi_hba->debugfs_complete_hdr[c] =
3756 devm_kmalloc(dev, sz, GFP_KERNEL);
3757
3758 if (!hisi_hba->debugfs_complete_hdr[c])
3759 goto fail;
3760 }
3761
3762 sz = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
3763 for (d = 0; d < hisi_hba->queue_count; d++) {
3764 hisi_hba->debugfs_cmd_hdr[d] =
3765 devm_kmalloc(dev, sz, GFP_KERNEL);
3766
3767 if (!hisi_hba->debugfs_cmd_hdr[d])
3768 goto fail;
3769 }
3770
3771 sz = HISI_SAS_MAX_COMMANDS * sizeof(struct hisi_sas_iost);
3772
3773 hisi_hba->debugfs_iost = devm_kmalloc(dev, sz, GFP_KERNEL);
3774 if (!hisi_hba->debugfs_iost)
3775 goto fail;
3776
3777 sz = HISI_SAS_IOST_ITCT_CACHE_NUM *
3778 sizeof(struct hisi_sas_iost_itct_cache);
3779
3780 hisi_hba->debugfs_iost_cache = devm_kmalloc(dev, sz, GFP_KERNEL);
3781 if (!hisi_hba->debugfs_iost_cache)
3782 goto fail;
3783
3784 sz = HISI_SAS_IOST_ITCT_CACHE_NUM *
3785 sizeof(struct hisi_sas_iost_itct_cache);
3786
3787 hisi_hba->debugfs_itct_cache = devm_kmalloc(dev, sz, GFP_KERNEL);
3788 if (!hisi_hba->debugfs_itct_cache)
3789 goto fail;
3790
3791
3792 sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
3793
3794 hisi_hba->debugfs_itct = devm_kmalloc(dev, sz, GFP_KERNEL);
3795 if (!hisi_hba->debugfs_itct)
3796 goto fail;
3797
3798 return 0;
3799 fail:
3800 hisi_sas_debugfs_release(hisi_hba);
3801 return -ENOMEM;
3802 }
3803
3804 static void hisi_sas_debugfs_bist_init(struct hisi_hba *hisi_hba)
3805 {
3806 hisi_hba->debugfs_bist_dentry =
3807 debugfs_create_dir("bist", hisi_hba->debugfs_dir);
3808 debugfs_create_file("link_rate", 0600,
3809 hisi_hba->debugfs_bist_dentry, hisi_hba,
3810 &hisi_sas_debugfs_bist_linkrate_ops);
3811
3812 debugfs_create_file("code_mode", 0600,
3813 hisi_hba->debugfs_bist_dentry, hisi_hba,
3814 &hisi_sas_debugfs_bist_code_mode_ops);
3815
3816 debugfs_create_file("phy_id", 0600, hisi_hba->debugfs_bist_dentry,
3817 hisi_hba, &hisi_sas_debugfs_bist_phy_ops);
3818
3819 debugfs_create_u32("cnt", 0600, hisi_hba->debugfs_bist_dentry,
3820 &hisi_hba->debugfs_bist_cnt);
3821
3822 debugfs_create_file("loopback_mode", 0600,
3823 hisi_hba->debugfs_bist_dentry,
3824 hisi_hba, &hisi_sas_debugfs_bist_mode_ops);
3825
3826 debugfs_create_file("enable", 0600, hisi_hba->debugfs_bist_dentry,
3827 hisi_hba, &hisi_sas_debugfs_bist_enable_ops);
3828
3829 hisi_hba->debugfs_bist_linkrate = SAS_LINK_RATE_1_5_GBPS;
3830 }
3831
3832 void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)
3833 {
3834 struct device *dev = hisi_hba->dev;
3835
3836 hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),
3837 hisi_sas_debugfs_dir);
3838 debugfs_create_file("trigger_dump", 0600,
3839 hisi_hba->debugfs_dir,
3840 hisi_hba,
3841 &hisi_sas_debugfs_trigger_dump_fops);
3842
3843
3844 hisi_sas_debugfs_bist_init(hisi_hba);
3845
3846 if (hisi_sas_debugfs_alloc(hisi_hba)) {
3847 debugfs_remove_recursive(hisi_hba->debugfs_dir);
3848 dev_dbg(dev, "failed to init debugfs!\n");
3849 }
3850 }
3851 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);
3852
3853 void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba)
3854 {
3855 debugfs_remove_recursive(hisi_hba->debugfs_dir);
3856 }
3857 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit);
3858
3859 int hisi_sas_remove(struct platform_device *pdev)
3860 {
3861 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
3862 struct hisi_hba *hisi_hba = sha->lldd_ha;
3863 struct Scsi_Host *shost = sha->core.shost;
3864
3865 if (timer_pending(&hisi_hba->timer))
3866 del_timer(&hisi_hba->timer);
3867
3868 sas_unregister_ha(sha);
3869 sas_remove_host(sha->core.shost);
3870
3871 hisi_sas_free(hisi_hba);
3872 scsi_host_put(shost);
3873 return 0;
3874 }
3875 EXPORT_SYMBOL_GPL(hisi_sas_remove);
3876
3877 bool hisi_sas_debugfs_enable;
3878 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
3879 module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
3880 MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)");
3881
3882 static __init int hisi_sas_init(void)
3883 {
3884 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
3885 if (!hisi_sas_stt)
3886 return -ENOMEM;
3887
3888 if (hisi_sas_debugfs_enable)
3889 hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
3890
3891 return 0;
3892 }
3893
3894 static __exit void hisi_sas_exit(void)
3895 {
3896 sas_release_transport(hisi_sas_stt);
3897
3898 debugfs_remove(hisi_sas_debugfs_dir);
3899 }
3900
3901 module_init(hisi_sas_init);
3902 module_exit(hisi_sas_exit);
3903
3904 MODULE_LICENSE("GPL");
3905 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
3906 MODULE_DESCRIPTION("HISILICON SAS controller driver");
3907 MODULE_ALIAS("platform:" DRV_NAME);