]>
Commit | Line | Data |
---|---|---|
e8899fad JG |
1 | /* |
2 | * Copyright (c) 2015 Linaro Ltd. | |
3 | * Copyright (c) 2015 Hisilicon Limited. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include "hisi_sas.h" | |
13 | #define DRV_NAME "hisi_sas" | |
14 | ||
42e7a693 JG |
15 | #define DEV_IS_GONE(dev) \ |
16 | ((!dev) || (dev->dev_type == SAS_PHY_UNUSED)) | |
17 | ||
18 | static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) | |
19 | { | |
20 | return device->port->ha->lldd_ha; | |
21 | } | |
22 | ||
257efd1f JG |
23 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
24 | { | |
25 | void *bitmap = hisi_hba->slot_index_tags; | |
26 | ||
27 | clear_bit(slot_idx, bitmap); | |
28 | } | |
29 | ||
42e7a693 JG |
30 | static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) |
31 | { | |
32 | hisi_sas_slot_index_clear(hisi_hba, slot_idx); | |
33 | } | |
34 | ||
35 | static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) | |
36 | { | |
37 | void *bitmap = hisi_hba->slot_index_tags; | |
38 | ||
39 | set_bit(slot_idx, bitmap); | |
40 | } | |
41 | ||
42 | static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx) | |
43 | { | |
44 | unsigned int index; | |
45 | void *bitmap = hisi_hba->slot_index_tags; | |
46 | ||
47 | index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count); | |
48 | if (index >= hisi_hba->slot_index_count) | |
49 | return -SAS_QUEUE_FULL; | |
50 | hisi_sas_slot_index_set(hisi_hba, index); | |
51 | *slot_idx = index; | |
52 | return 0; | |
53 | } | |
54 | ||
257efd1f JG |
55 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
56 | { | |
57 | int i; | |
58 | ||
59 | for (i = 0; i < hisi_hba->slot_index_count; ++i) | |
60 | hisi_sas_slot_index_clear(hisi_hba, i); | |
61 | } | |
27a3f229 JG |
62 | |
63 | void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, | |
64 | struct hisi_sas_slot *slot) | |
65 | { | |
66 | struct device *dev = &hisi_hba->pdev->dev; | |
67 | ||
68 | if (!slot->task) | |
69 | return; | |
70 | ||
71 | if (!sas_protocol_ata(task->task_proto)) | |
72 | if (slot->n_elem) | |
73 | dma_unmap_sg(dev, task->scatter, slot->n_elem, | |
74 | task->data_dir); | |
75 | ||
76 | if (slot->command_table) | |
77 | dma_pool_free(hisi_hba->command_table_pool, | |
78 | slot->command_table, slot->command_table_dma); | |
79 | ||
80 | if (slot->status_buffer) | |
81 | dma_pool_free(hisi_hba->status_buffer_pool, | |
82 | slot->status_buffer, slot->status_buffer_dma); | |
83 | ||
84 | if (slot->sge_page) | |
85 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
86 | slot->sge_page_dma); | |
87 | ||
88 | list_del_init(&slot->entry); | |
89 | task->lldd_task = NULL; | |
90 | slot->task = NULL; | |
91 | slot->port = NULL; | |
92 | hisi_sas_slot_index_free(hisi_hba, slot->idx); | |
93 | memset(slot, 0, sizeof(*slot)); | |
94 | } | |
95 | EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); | |
96 | ||
66ee999b JG |
97 | static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, |
98 | struct hisi_sas_slot *slot) | |
99 | { | |
100 | return hisi_hba->hw->prep_smp(hisi_hba, slot); | |
101 | } | |
102 | ||
42e7a693 JG |
103 | static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, |
104 | struct hisi_sas_slot *slot, int is_tmf, | |
105 | struct hisi_sas_tmf_task *tmf) | |
106 | { | |
107 | return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
108 | } | |
109 | ||
6f2ff1a1 JG |
110 | static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, |
111 | struct hisi_sas_slot *slot) | |
112 | { | |
113 | return hisi_hba->hw->prep_stp(hisi_hba, slot); | |
114 | } | |
115 | ||
42e7a693 JG |
116 | static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba, |
117 | int is_tmf, struct hisi_sas_tmf_task *tmf, | |
118 | int *pass) | |
119 | { | |
120 | struct domain_device *device = task->dev; | |
121 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
122 | struct hisi_sas_port *port; | |
123 | struct hisi_sas_slot *slot; | |
124 | struct hisi_sas_cmd_hdr *cmd_hdr_base; | |
125 | struct device *dev = &hisi_hba->pdev->dev; | |
126 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; | |
127 | ||
128 | if (!device->port) { | |
129 | struct task_status_struct *ts = &task->task_status; | |
130 | ||
131 | ts->resp = SAS_TASK_UNDELIVERED; | |
132 | ts->stat = SAS_PHY_DOWN; | |
133 | /* | |
134 | * libsas will use dev->port, should | |
135 | * not call task_done for sata | |
136 | */ | |
137 | if (device->dev_type != SAS_SATA_DEV) | |
138 | task->task_done(task); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | if (DEV_IS_GONE(sas_dev)) { | |
143 | if (sas_dev) | |
144 | dev_info(dev, "task prep: device %llu not ready\n", | |
145 | sas_dev->device_id); | |
146 | else | |
147 | dev_info(dev, "task prep: device %016llx not ready\n", | |
148 | SAS_ADDR(device->sas_addr)); | |
149 | ||
150 | rc = SAS_PHY_DOWN; | |
151 | return rc; | |
152 | } | |
153 | port = device->port->lldd_port; | |
154 | if (port && !port->port_attached && !tmf) { | |
155 | if (sas_protocol_ata(task->task_proto)) { | |
156 | struct task_status_struct *ts = &task->task_status; | |
157 | ||
158 | dev_info(dev, | |
159 | "task prep: SATA/STP port%d not attach device\n", | |
160 | device->port->id); | |
161 | ts->resp = SAS_TASK_COMPLETE; | |
162 | ts->stat = SAS_PHY_DOWN; | |
163 | task->task_done(task); | |
164 | } else { | |
165 | struct task_status_struct *ts = &task->task_status; | |
166 | ||
167 | dev_info(dev, | |
168 | "task prep: SAS port%d does not attach device\n", | |
169 | device->port->id); | |
170 | ts->resp = SAS_TASK_UNDELIVERED; | |
171 | ts->stat = SAS_PHY_DOWN; | |
172 | task->task_done(task); | |
173 | } | |
174 | return 0; | |
175 | } | |
176 | ||
177 | if (!sas_protocol_ata(task->task_proto)) { | |
178 | if (task->num_scatter) { | |
179 | n_elem = dma_map_sg(dev, task->scatter, | |
180 | task->num_scatter, task->data_dir); | |
181 | if (!n_elem) { | |
182 | rc = -ENOMEM; | |
183 | goto prep_out; | |
184 | } | |
185 | } | |
186 | } else | |
187 | n_elem = task->num_scatter; | |
188 | ||
189 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); | |
190 | if (rc) | |
191 | goto err_out; | |
192 | rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue, | |
193 | &dlvry_queue_slot); | |
194 | if (rc) | |
195 | goto err_out_tag; | |
196 | ||
197 | slot = &hisi_hba->slot_info[slot_idx]; | |
198 | memset(slot, 0, sizeof(struct hisi_sas_slot)); | |
199 | ||
200 | slot->idx = slot_idx; | |
201 | slot->n_elem = n_elem; | |
202 | slot->dlvry_queue = dlvry_queue; | |
203 | slot->dlvry_queue_slot = dlvry_queue_slot; | |
204 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; | |
205 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; | |
206 | slot->task = task; | |
207 | slot->port = port; | |
208 | task->lldd_task = slot; | |
209 | ||
210 | slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool, | |
211 | GFP_ATOMIC, | |
212 | &slot->status_buffer_dma); | |
9c9d18e7 DC |
213 | if (!slot->status_buffer) { |
214 | rc = -ENOMEM; | |
42e7a693 | 215 | goto err_out_slot_buf; |
9c9d18e7 | 216 | } |
42e7a693 JG |
217 | memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ); |
218 | ||
219 | slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool, | |
220 | GFP_ATOMIC, | |
221 | &slot->command_table_dma); | |
9c9d18e7 DC |
222 | if (!slot->command_table) { |
223 | rc = -ENOMEM; | |
42e7a693 | 224 | goto err_out_status_buf; |
9c9d18e7 | 225 | } |
42e7a693 JG |
226 | memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ); |
227 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); | |
228 | ||
229 | switch (task->task_proto) { | |
66ee999b JG |
230 | case SAS_PROTOCOL_SMP: |
231 | rc = hisi_sas_task_prep_smp(hisi_hba, slot); | |
232 | break; | |
42e7a693 JG |
233 | case SAS_PROTOCOL_SSP: |
234 | rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
235 | break; | |
236 | case SAS_PROTOCOL_SATA: | |
237 | case SAS_PROTOCOL_STP: | |
238 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: | |
6f2ff1a1 JG |
239 | rc = hisi_sas_task_prep_ata(hisi_hba, slot); |
240 | break; | |
42e7a693 JG |
241 | default: |
242 | dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", | |
243 | task->task_proto); | |
244 | rc = -EINVAL; | |
245 | break; | |
246 | } | |
247 | ||
248 | if (rc) { | |
249 | dev_err(dev, "task prep: rc = 0x%x\n", rc); | |
250 | if (slot->sge_page) | |
251 | goto err_out_sge; | |
252 | goto err_out_command_table; | |
253 | } | |
254 | ||
255 | list_add_tail(&slot->entry, &port->list); | |
256 | spin_lock(&task->task_state_lock); | |
257 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
258 | spin_unlock(&task->task_state_lock); | |
259 | ||
260 | hisi_hba->slot_prep = slot; | |
261 | ||
262 | sas_dev->running_req++; | |
263 | ++(*pass); | |
264 | ||
9c9d18e7 | 265 | return 0; |
42e7a693 JG |
266 | |
267 | err_out_sge: | |
268 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
269 | slot->sge_page_dma); | |
270 | err_out_command_table: | |
271 | dma_pool_free(hisi_hba->command_table_pool, slot->command_table, | |
272 | slot->command_table_dma); | |
273 | err_out_status_buf: | |
274 | dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer, | |
275 | slot->status_buffer_dma); | |
276 | err_out_slot_buf: | |
277 | /* Nothing to be done */ | |
278 | err_out_tag: | |
279 | hisi_sas_slot_index_free(hisi_hba, slot_idx); | |
280 | err_out: | |
281 | dev_err(dev, "task prep: failed[%d]!\n", rc); | |
282 | if (!sas_protocol_ata(task->task_proto)) | |
283 | if (n_elem) | |
284 | dma_unmap_sg(dev, task->scatter, n_elem, | |
285 | task->data_dir); | |
286 | prep_out: | |
287 | return rc; | |
288 | } | |
289 | ||
290 | static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, | |
291 | int is_tmf, struct hisi_sas_tmf_task *tmf) | |
292 | { | |
293 | u32 rc; | |
294 | u32 pass = 0; | |
295 | unsigned long flags; | |
296 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
297 | struct device *dev = &hisi_hba->pdev->dev; | |
298 | ||
299 | /* protect task_prep and start_delivery sequence */ | |
300 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
301 | rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass); | |
302 | if (rc) | |
303 | dev_err(dev, "task exec: failed[%d]!\n", rc); | |
304 | ||
305 | if (likely(pass)) | |
306 | hisi_hba->hw->start_delivery(hisi_hba); | |
307 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
308 | ||
309 | return rc; | |
310 | } | |
257efd1f | 311 | |
66139921 JG |
312 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
313 | { | |
314 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
315 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
316 | struct sas_ha_struct *sas_ha; | |
317 | ||
318 | if (!phy->phy_attached) | |
319 | return; | |
320 | ||
321 | sas_ha = &hisi_hba->sha; | |
322 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); | |
323 | ||
324 | if (sas_phy->phy) { | |
325 | struct sas_phy *sphy = sas_phy->phy; | |
326 | ||
327 | sphy->negotiated_linkrate = sas_phy->linkrate; | |
328 | sphy->minimum_linkrate = phy->minimum_linkrate; | |
329 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; | |
330 | sphy->maximum_linkrate = phy->maximum_linkrate; | |
331 | } | |
332 | ||
333 | if (phy->phy_type & PORT_TYPE_SAS) { | |
334 | struct sas_identify_frame *id; | |
335 | ||
336 | id = (struct sas_identify_frame *)phy->frame_rcvd; | |
337 | id->dev_type = phy->identify.device_type; | |
338 | id->initiator_bits = SAS_PROTOCOL_ALL; | |
339 | id->target_bits = phy->identify.target_port_protocols; | |
340 | } else if (phy->phy_type & PORT_TYPE_SATA) { | |
341 | /*Nothing*/ | |
342 | } | |
343 | ||
344 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; | |
345 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); | |
346 | } | |
347 | ||
abda97c2 JG |
348 | static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) |
349 | { | |
350 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
351 | struct hisi_sas_device *sas_dev = NULL; | |
352 | int i; | |
353 | ||
354 | spin_lock(&hisi_hba->lock); | |
355 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { | |
356 | if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { | |
357 | hisi_hba->devices[i].device_id = i; | |
358 | sas_dev = &hisi_hba->devices[i]; | |
359 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
360 | sas_dev->dev_type = device->dev_type; | |
361 | sas_dev->hisi_hba = hisi_hba; | |
362 | sas_dev->sas_device = device; | |
363 | break; | |
364 | } | |
365 | } | |
366 | spin_unlock(&hisi_hba->lock); | |
367 | ||
368 | return sas_dev; | |
369 | } | |
370 | ||
371 | static int hisi_sas_dev_found(struct domain_device *device) | |
372 | { | |
373 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
374 | struct domain_device *parent_dev = device->parent; | |
375 | struct hisi_sas_device *sas_dev; | |
376 | struct device *dev = &hisi_hba->pdev->dev; | |
377 | ||
378 | sas_dev = hisi_sas_alloc_dev(device); | |
379 | if (!sas_dev) { | |
380 | dev_err(dev, "fail alloc dev: max support %d devices\n", | |
381 | HISI_SAS_MAX_DEVICES); | |
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | device->lldd_dev = sas_dev; | |
386 | hisi_hba->hw->setup_itct(hisi_hba, sas_dev); | |
387 | ||
388 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { | |
389 | int phy_no; | |
390 | u8 phy_num = parent_dev->ex_dev.num_phys; | |
391 | struct ex_phy *phy; | |
392 | ||
393 | for (phy_no = 0; phy_no < phy_num; phy_no++) { | |
394 | phy = &parent_dev->ex_dev.ex_phy[phy_no]; | |
395 | if (SAS_ADDR(phy->attached_sas_addr) == | |
396 | SAS_ADDR(device->sas_addr)) { | |
397 | sas_dev->attached_phy = phy_no; | |
398 | break; | |
399 | } | |
400 | } | |
401 | ||
402 | if (phy_no == phy_num) { | |
403 | dev_info(dev, "dev found: no attached " | |
404 | "dev:%016llx at ex:%016llx\n", | |
405 | SAS_ADDR(device->sas_addr), | |
406 | SAS_ADDR(parent_dev->sas_addr)); | |
407 | return -EINVAL; | |
408 | } | |
409 | } | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
701f75ec JG |
414 | static void hisi_sas_scan_start(struct Scsi_Host *shost) |
415 | { | |
416 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
417 | int i; | |
418 | ||
419 | for (i = 0; i < hisi_hba->n_phy; ++i) | |
420 | hisi_sas_bytes_dmaed(hisi_hba, i); | |
421 | ||
422 | hisi_hba->scan_finished = 1; | |
423 | } | |
424 | ||
425 | static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
426 | { | |
427 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
428 | struct sas_ha_struct *sha = &hisi_hba->sha; | |
429 | ||
430 | if (hisi_hba->scan_finished == 0) | |
431 | return 0; | |
432 | ||
433 | sas_drain_work(sha); | |
434 | return 1; | |
435 | } | |
436 | ||
66139921 JG |
437 | static void hisi_sas_phyup_work(struct work_struct *work) |
438 | { | |
439 | struct hisi_sas_phy *phy = | |
440 | container_of(work, struct hisi_sas_phy, phyup_ws); | |
441 | struct hisi_hba *hisi_hba = phy->hisi_hba; | |
442 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
443 | int phy_no = sas_phy->id; | |
444 | ||
445 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ | |
446 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
447 | } | |
976867e6 JG |
448 | |
449 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) | |
450 | { | |
451 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
452 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
453 | ||
454 | phy->hisi_hba = hisi_hba; | |
455 | phy->port = NULL; | |
456 | init_timer(&phy->timer); | |
457 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; | |
458 | sas_phy->class = SAS; | |
459 | sas_phy->iproto = SAS_PROTOCOL_ALL; | |
460 | sas_phy->tproto = 0; | |
461 | sas_phy->type = PHY_TYPE_PHYSICAL; | |
462 | sas_phy->role = PHY_ROLE_INITIATOR; | |
463 | sas_phy->oob_mode = OOB_NOT_CONNECTED; | |
464 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; | |
465 | sas_phy->id = phy_no; | |
466 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; | |
467 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; | |
468 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; | |
469 | sas_phy->lldd_phy = phy; | |
66139921 JG |
470 | |
471 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); | |
976867e6 JG |
472 | } |
473 | ||
184a4635 JG |
474 | static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) |
475 | { | |
476 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
477 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
478 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
479 | struct asd_sas_port *sas_port = sas_phy->port; | |
480 | struct hisi_sas_port *port = &hisi_hba->port[sas_phy->id]; | |
481 | unsigned long flags; | |
482 | ||
483 | if (!sas_port) | |
484 | return; | |
485 | ||
486 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
487 | port->port_attached = 1; | |
488 | port->id = phy->port_id; | |
489 | phy->port = port; | |
490 | sas_port->lldd_port = port; | |
491 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
492 | } | |
493 | ||
494 | static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no, | |
495 | struct domain_device *device) | |
496 | { | |
497 | struct hisi_sas_phy *phy; | |
498 | struct hisi_sas_port *port; | |
499 | struct hisi_sas_slot *slot, *slot2; | |
500 | struct device *dev = &hisi_hba->pdev->dev; | |
501 | ||
502 | phy = &hisi_hba->phy[phy_no]; | |
503 | port = phy->port; | |
504 | if (!port) | |
505 | return; | |
506 | ||
507 | list_for_each_entry_safe(slot, slot2, &port->list, entry) { | |
508 | struct sas_task *task; | |
509 | ||
510 | task = slot->task; | |
511 | if (device && task->dev != device) | |
512 | continue; | |
513 | ||
514 | dev_info(dev, "Release slot [%d:%d], task [%p]:\n", | |
515 | slot->dlvry_queue, slot->dlvry_queue_slot, task); | |
516 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
517 | } | |
518 | } | |
519 | ||
520 | static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy) | |
521 | { | |
522 | struct domain_device *device; | |
523 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
524 | struct asd_sas_port *sas_port = sas_phy->port; | |
525 | ||
526 | list_for_each_entry(device, &sas_port->dev_list, dev_list_node) | |
527 | hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device); | |
528 | } | |
529 | ||
530 | static void hisi_sas_release_task(struct hisi_hba *hisi_hba, | |
531 | struct domain_device *device) | |
532 | { | |
533 | struct asd_sas_port *port = device->port; | |
534 | struct asd_sas_phy *sas_phy; | |
535 | ||
536 | list_for_each_entry(sas_phy, &port->phy_list, port_phy_el) | |
537 | hisi_sas_do_release_task(hisi_hba, sas_phy->id, device); | |
538 | } | |
539 | ||
abda97c2 JG |
540 | static void hisi_sas_dev_gone(struct domain_device *device) |
541 | { | |
542 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
543 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
544 | struct device *dev = &hisi_hba->pdev->dev; | |
545 | u64 dev_id = sas_dev->device_id; | |
546 | ||
547 | dev_info(dev, "found dev[%lld:%x] is gone\n", | |
548 | sas_dev->device_id, sas_dev->dev_type); | |
549 | ||
550 | hisi_hba->hw->free_device(hisi_hba, sas_dev); | |
551 | device->lldd_dev = NULL; | |
552 | memset(sas_dev, 0, sizeof(*sas_dev)); | |
553 | sas_dev->device_id = dev_id; | |
554 | sas_dev->dev_type = SAS_PHY_UNUSED; | |
555 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
556 | } | |
42e7a693 JG |
557 | |
558 | static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) | |
559 | { | |
560 | return hisi_sas_task_exec(task, gfp_flags, 0, NULL); | |
561 | } | |
562 | ||
e4189d53 JG |
563 | static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, |
564 | void *funcdata) | |
565 | { | |
566 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
567 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
568 | int phy_no = sas_phy->id; | |
569 | ||
570 | switch (func) { | |
571 | case PHY_FUNC_HARD_RESET: | |
572 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
573 | break; | |
574 | ||
575 | case PHY_FUNC_LINK_RESET: | |
576 | hisi_hba->hw->phy_enable(hisi_hba, phy_no); | |
577 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
578 | break; | |
579 | ||
580 | case PHY_FUNC_DISABLE: | |
581 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); | |
582 | break; | |
583 | ||
584 | case PHY_FUNC_SET_LINK_RATE: | |
585 | case PHY_FUNC_RELEASE_SPINUP_HOLD: | |
586 | default: | |
587 | return -EOPNOTSUPP; | |
588 | } | |
589 | return 0; | |
590 | } | |
184a4635 | 591 | |
0efff300 JG |
592 | static void hisi_sas_task_done(struct sas_task *task) |
593 | { | |
594 | if (!del_timer(&task->slow_task->timer)) | |
595 | return; | |
596 | complete(&task->slow_task->completion); | |
597 | } | |
598 | ||
599 | static void hisi_sas_tmf_timedout(unsigned long data) | |
600 | { | |
601 | struct sas_task *task = (struct sas_task *)data; | |
602 | ||
603 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
604 | complete(&task->slow_task->completion); | |
605 | } | |
606 | ||
607 | #define TASK_TIMEOUT 20 | |
608 | #define TASK_RETRY 3 | |
609 | static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, | |
610 | void *parameter, u32 para_len, | |
611 | struct hisi_sas_tmf_task *tmf) | |
612 | { | |
613 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
614 | struct hisi_hba *hisi_hba = sas_dev->hisi_hba; | |
615 | struct device *dev = &hisi_hba->pdev->dev; | |
616 | struct sas_task *task; | |
617 | int res, retry; | |
618 | ||
619 | for (retry = 0; retry < TASK_RETRY; retry++) { | |
620 | task = sas_alloc_slow_task(GFP_KERNEL); | |
621 | if (!task) | |
622 | return -ENOMEM; | |
623 | ||
624 | task->dev = device; | |
625 | task->task_proto = device->tproto; | |
626 | ||
627 | memcpy(&task->ssp_task, parameter, para_len); | |
628 | task->task_done = hisi_sas_task_done; | |
629 | ||
630 | task->slow_task->timer.data = (unsigned long) task; | |
631 | task->slow_task->timer.function = hisi_sas_tmf_timedout; | |
632 | task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; | |
633 | add_timer(&task->slow_task->timer); | |
634 | ||
635 | res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); | |
636 | ||
637 | if (res) { | |
638 | del_timer(&task->slow_task->timer); | |
639 | dev_err(dev, "abort tmf: executing internal task failed: %d\n", | |
640 | res); | |
641 | goto ex_err; | |
642 | } | |
643 | ||
644 | wait_for_completion(&task->slow_task->completion); | |
645 | res = TMF_RESP_FUNC_FAILED; | |
646 | /* Even TMF timed out, return direct. */ | |
647 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
648 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
649 | dev_err(dev, "abort tmf: TMF task[%d] timeout\n", | |
650 | tmf->tag_of_task_to_be_managed); | |
651 | if (task->lldd_task) { | |
652 | struct hisi_sas_slot *slot = | |
653 | task->lldd_task; | |
654 | ||
655 | hisi_sas_slot_task_free(hisi_hba, | |
656 | task, slot); | |
657 | } | |
658 | ||
659 | goto ex_err; | |
660 | } | |
661 | } | |
662 | ||
663 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
1af1b808 | 664 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
0efff300 JG |
665 | res = TMF_RESP_FUNC_COMPLETE; |
666 | break; | |
667 | } | |
668 | ||
669 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
670 | task->task_status.stat == SAS_DATA_UNDERRUN) { | |
671 | /* no error, but return the number of bytes of | |
672 | * underrun | |
673 | */ | |
674 | dev_warn(dev, "abort tmf: task to dev %016llx " | |
675 | "resp: 0x%x sts 0x%x underrun\n", | |
676 | SAS_ADDR(device->sas_addr), | |
677 | task->task_status.resp, | |
678 | task->task_status.stat); | |
679 | res = task->task_status.residual; | |
680 | break; | |
681 | } | |
682 | ||
683 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
684 | task->task_status.stat == SAS_DATA_OVERRUN) { | |
685 | dev_warn(dev, "abort tmf: blocked task error\n"); | |
686 | res = -EMSGSIZE; | |
687 | break; | |
688 | } | |
689 | ||
690 | dev_warn(dev, "abort tmf: task to dev " | |
691 | "%016llx resp: 0x%x status 0x%x\n", | |
692 | SAS_ADDR(device->sas_addr), task->task_status.resp, | |
693 | task->task_status.stat); | |
694 | sas_free_task(task); | |
695 | task = NULL; | |
696 | } | |
697 | ex_err: | |
698 | WARN_ON(retry == TASK_RETRY); | |
699 | sas_free_task(task); | |
700 | return res; | |
701 | } | |
702 | ||
703 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, | |
704 | u8 *lun, struct hisi_sas_tmf_task *tmf) | |
705 | { | |
706 | struct sas_ssp_task ssp_task; | |
707 | ||
708 | if (!(device->tproto & SAS_PROTOCOL_SSP)) | |
709 | return TMF_RESP_FUNC_ESUPP; | |
710 | ||
711 | memcpy(ssp_task.LUN, lun, 8); | |
712 | ||
713 | return hisi_sas_exec_internal_tmf_task(device, &ssp_task, | |
714 | sizeof(ssp_task), tmf); | |
715 | } | |
716 | ||
717 | static int hisi_sas_abort_task(struct sas_task *task) | |
718 | { | |
719 | struct scsi_lun lun; | |
720 | struct hisi_sas_tmf_task tmf_task; | |
721 | struct domain_device *device = task->dev; | |
722 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
723 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
724 | struct device *dev = &hisi_hba->pdev->dev; | |
725 | int rc = TMF_RESP_FUNC_FAILED; | |
726 | unsigned long flags; | |
727 | ||
728 | if (!sas_dev) { | |
729 | dev_warn(dev, "Device has been removed\n"); | |
730 | return TMF_RESP_FUNC_FAILED; | |
731 | } | |
732 | ||
733 | spin_lock_irqsave(&task->task_state_lock, flags); | |
734 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
735 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
736 | rc = TMF_RESP_FUNC_COMPLETE; | |
737 | goto out; | |
738 | } | |
739 | ||
740 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
741 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
742 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
743 | struct scsi_cmnd *cmnd = task->uldd_task; | |
744 | struct hisi_sas_slot *slot = task->lldd_task; | |
745 | u32 tag = slot->idx; | |
746 | ||
747 | int_to_scsilun(cmnd->device->lun, &lun); | |
748 | tmf_task.tmf = TMF_ABORT_TASK; | |
749 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
750 | ||
751 | rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, | |
752 | &tmf_task); | |
753 | ||
754 | /* if successful, clear the task and callback forwards.*/ | |
755 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
756 | if (task->lldd_task) { | |
757 | struct hisi_sas_slot *slot; | |
758 | ||
759 | slot = &hisi_hba->slot_info | |
760 | [tmf_task.tag_of_task_to_be_managed]; | |
761 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
762 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
763 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
764 | } | |
765 | } | |
766 | ||
767 | } else if (task->task_proto & SAS_PROTOCOL_SATA || | |
768 | task->task_proto & SAS_PROTOCOL_STP) { | |
769 | if (task->dev->dev_type == SAS_SATA_DEV) { | |
770 | struct hisi_slot_info *slot = task->lldd_task; | |
771 | ||
772 | dev_notice(dev, "abort task: hba=%p task=%p slot=%p\n", | |
773 | hisi_hba, task, slot); | |
774 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
775 | rc = TMF_RESP_FUNC_COMPLETE; | |
776 | goto out; | |
777 | } | |
778 | ||
779 | } | |
780 | ||
781 | out: | |
782 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
783 | dev_notice(dev, "abort task: rc=%d\n", rc); | |
784 | return rc; | |
785 | } | |
786 | ||
787 | static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) | |
788 | { | |
789 | struct hisi_sas_tmf_task tmf_task; | |
790 | int rc = TMF_RESP_FUNC_FAILED; | |
791 | ||
792 | tmf_task.tmf = TMF_ABORT_TASK_SET; | |
793 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
794 | ||
795 | return rc; | |
796 | } | |
797 | ||
798 | static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) | |
799 | { | |
800 | int rc = TMF_RESP_FUNC_FAILED; | |
801 | struct hisi_sas_tmf_task tmf_task; | |
802 | ||
803 | tmf_task.tmf = TMF_CLEAR_ACA; | |
804 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
805 | ||
806 | return rc; | |
807 | } | |
808 | ||
809 | static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) | |
810 | { | |
811 | struct sas_phy *phy = sas_get_local_phy(device); | |
812 | int rc, reset_type = (device->dev_type == SAS_SATA_DEV || | |
813 | (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; | |
814 | rc = sas_phy_reset(phy, reset_type); | |
815 | sas_put_local_phy(phy); | |
816 | msleep(2000); | |
817 | return rc; | |
818 | } | |
819 | ||
820 | static int hisi_sas_I_T_nexus_reset(struct domain_device *device) | |
821 | { | |
822 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
823 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
824 | unsigned long flags; | |
825 | int rc = TMF_RESP_FUNC_FAILED; | |
826 | ||
827 | if (sas_dev->dev_status != HISI_SAS_DEV_EH) | |
828 | return TMF_RESP_FUNC_FAILED; | |
829 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
830 | ||
831 | rc = hisi_sas_debug_I_T_nexus_reset(device); | |
832 | ||
833 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
834 | hisi_sas_release_task(hisi_hba, device); | |
835 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
836 | ||
837 | return 0; | |
838 | } | |
839 | ||
840 | static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) | |
841 | { | |
842 | struct hisi_sas_tmf_task tmf_task; | |
843 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
844 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
845 | struct device *dev = &hisi_hba->pdev->dev; | |
846 | unsigned long flags; | |
847 | int rc = TMF_RESP_FUNC_FAILED; | |
848 | ||
849 | tmf_task.tmf = TMF_LU_RESET; | |
850 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
851 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
852 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
853 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
854 | hisi_sas_release_task(hisi_hba, device); | |
855 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
856 | } | |
857 | ||
858 | /* If failed, fall-through I_T_Nexus reset */ | |
859 | dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n", | |
860 | sas_dev->device_id, rc); | |
861 | return rc; | |
862 | } | |
863 | ||
864 | static int hisi_sas_query_task(struct sas_task *task) | |
865 | { | |
866 | struct scsi_lun lun; | |
867 | struct hisi_sas_tmf_task tmf_task; | |
868 | int rc = TMF_RESP_FUNC_FAILED; | |
869 | ||
870 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
871 | struct scsi_cmnd *cmnd = task->uldd_task; | |
872 | struct domain_device *device = task->dev; | |
873 | struct hisi_sas_slot *slot = task->lldd_task; | |
874 | u32 tag = slot->idx; | |
875 | ||
876 | int_to_scsilun(cmnd->device->lun, &lun); | |
877 | tmf_task.tmf = TMF_QUERY_TASK; | |
878 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
879 | ||
880 | rc = hisi_sas_debug_issue_ssp_tmf(device, | |
881 | lun.scsi_lun, | |
882 | &tmf_task); | |
883 | switch (rc) { | |
884 | /* The task is still in Lun, release it then */ | |
885 | case TMF_RESP_FUNC_SUCC: | |
886 | /* The task is not in Lun or failed, reset the phy */ | |
887 | case TMF_RESP_FUNC_FAILED: | |
888 | case TMF_RESP_FUNC_COMPLETE: | |
889 | break; | |
890 | } | |
891 | } | |
892 | return rc; | |
893 | } | |
894 | ||
184a4635 JG |
895 | static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) |
896 | { | |
897 | hisi_sas_port_notify_formed(sas_phy); | |
898 | } | |
899 | ||
900 | static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy) | |
901 | { | |
902 | hisi_sas_port_notify_deformed(sas_phy); | |
903 | } | |
904 | ||
905 | static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) | |
906 | { | |
907 | phy->phy_attached = 0; | |
908 | phy->phy_type = 0; | |
909 | phy->port = NULL; | |
910 | } | |
911 | ||
912 | void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) | |
913 | { | |
914 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
915 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
916 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; | |
917 | ||
918 | if (rdy) { | |
919 | /* Phy down but ready */ | |
920 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
921 | hisi_sas_port_notify_formed(sas_phy); | |
922 | } else { | |
923 | struct hisi_sas_port *port = phy->port; | |
924 | ||
925 | /* Phy down and not ready */ | |
926 | sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); | |
927 | sas_phy_disconnected(sas_phy); | |
928 | ||
929 | if (port) { | |
930 | if (phy->phy_type & PORT_TYPE_SAS) { | |
931 | int port_id = port->id; | |
932 | ||
933 | if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, | |
934 | port_id)) | |
935 | port->port_attached = 0; | |
936 | } else if (phy->phy_type & PORT_TYPE_SATA) | |
937 | port->port_attached = 0; | |
938 | } | |
939 | hisi_sas_phy_disconnected(phy); | |
940 | } | |
941 | } | |
942 | EXPORT_SYMBOL_GPL(hisi_sas_phy_down); | |
943 | ||
e8899fad JG |
944 | static struct scsi_transport_template *hisi_sas_stt; |
945 | ||
7eb7869f JG |
946 | static struct scsi_host_template hisi_sas_sht = { |
947 | .module = THIS_MODULE, | |
948 | .name = DRV_NAME, | |
949 | .queuecommand = sas_queuecommand, | |
950 | .target_alloc = sas_target_alloc, | |
951 | .slave_configure = sas_slave_configure, | |
701f75ec JG |
952 | .scan_finished = hisi_sas_scan_finished, |
953 | .scan_start = hisi_sas_scan_start, | |
7eb7869f JG |
954 | .change_queue_depth = sas_change_queue_depth, |
955 | .bios_param = sas_bios_param, | |
956 | .can_queue = 1, | |
957 | .this_id = -1, | |
958 | .sg_tablesize = SG_ALL, | |
959 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, | |
960 | .use_clustering = ENABLE_CLUSTERING, | |
961 | .eh_device_reset_handler = sas_eh_device_reset_handler, | |
962 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, | |
963 | .target_destroy = sas_target_destroy, | |
964 | .ioctl = sas_ioctl, | |
965 | }; | |
966 | ||
e8899fad | 967 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
abda97c2 JG |
968 | .lldd_dev_found = hisi_sas_dev_found, |
969 | .lldd_dev_gone = hisi_sas_dev_gone, | |
42e7a693 | 970 | .lldd_execute_task = hisi_sas_queue_command, |
e4189d53 | 971 | .lldd_control_phy = hisi_sas_control_phy, |
0efff300 JG |
972 | .lldd_abort_task = hisi_sas_abort_task, |
973 | .lldd_abort_task_set = hisi_sas_abort_task_set, | |
974 | .lldd_clear_aca = hisi_sas_clear_aca, | |
975 | .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, | |
976 | .lldd_lu_reset = hisi_sas_lu_reset, | |
977 | .lldd_query_task = hisi_sas_query_task, | |
184a4635 JG |
978 | .lldd_port_formed = hisi_sas_port_formed, |
979 | .lldd_port_deformed = hisi_sas_port_deformed, | |
e8899fad JG |
980 | }; |
981 | ||
6be6de18 JG |
982 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
983 | { | |
6be6de18 JG |
984 | struct platform_device *pdev = hisi_hba->pdev; |
985 | struct device *dev = &pdev->dev; | |
a8d547bd | 986 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
6be6de18 | 987 | |
fa42d80d | 988 | spin_lock_init(&hisi_hba->lock); |
976867e6 JG |
989 | for (i = 0; i < hisi_hba->n_phy; i++) { |
990 | hisi_sas_phy_init(hisi_hba, i); | |
991 | hisi_hba->port[i].port_attached = 0; | |
992 | hisi_hba->port[i].id = -1; | |
993 | INIT_LIST_HEAD(&hisi_hba->port[i].list); | |
994 | } | |
995 | ||
af740dbe JG |
996 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
997 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; | |
998 | hisi_hba->devices[i].device_id = i; | |
999 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; | |
1000 | } | |
1001 | ||
6be6de18 | 1002 | for (i = 0; i < hisi_hba->queue_count; i++) { |
9101a079 JG |
1003 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
1004 | ||
1005 | /* Completion queue structure */ | |
1006 | cq->id = i; | |
1007 | cq->hisi_hba = hisi_hba; | |
1008 | ||
6be6de18 JG |
1009 | /* Delivery queue */ |
1010 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1011 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, | |
1012 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); | |
1013 | if (!hisi_hba->cmd_hdr[i]) | |
1014 | goto err_out; | |
1015 | memset(hisi_hba->cmd_hdr[i], 0, s); | |
1016 | ||
1017 | /* Completion queue */ | |
1018 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1019 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, | |
1020 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); | |
1021 | if (!hisi_hba->complete_hdr[i]) | |
1022 | goto err_out; | |
1023 | memset(hisi_hba->complete_hdr[i], 0, s); | |
1024 | } | |
1025 | ||
1026 | s = HISI_SAS_STATUS_BUF_SZ; | |
1027 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", | |
1028 | dev, s, 16, 0); | |
1029 | if (!hisi_hba->status_buffer_pool) | |
1030 | goto err_out; | |
1031 | ||
1032 | s = HISI_SAS_COMMAND_TABLE_SZ; | |
1033 | hisi_hba->command_table_pool = dma_pool_create("command_table", | |
1034 | dev, s, 16, 0); | |
1035 | if (!hisi_hba->command_table_pool) | |
1036 | goto err_out; | |
1037 | ||
1038 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1039 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, | |
1040 | GFP_KERNEL); | |
1041 | if (!hisi_hba->itct) | |
1042 | goto err_out; | |
1043 | ||
1044 | memset(hisi_hba->itct, 0, s); | |
1045 | ||
a8d547bd | 1046 | hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, |
6be6de18 JG |
1047 | sizeof(struct hisi_sas_slot), |
1048 | GFP_KERNEL); | |
1049 | if (!hisi_hba->slot_info) | |
1050 | goto err_out; | |
1051 | ||
a8d547bd | 1052 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
6be6de18 JG |
1053 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
1054 | GFP_KERNEL); | |
1055 | if (!hisi_hba->iost) | |
1056 | goto err_out; | |
1057 | ||
1058 | memset(hisi_hba->iost, 0, s); | |
1059 | ||
a8d547bd | 1060 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
6be6de18 JG |
1061 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
1062 | &hisi_hba->breakpoint_dma, GFP_KERNEL); | |
1063 | if (!hisi_hba->breakpoint) | |
1064 | goto err_out; | |
1065 | ||
1066 | memset(hisi_hba->breakpoint, 0, s); | |
1067 | ||
a8d547bd | 1068 | hisi_hba->slot_index_count = max_command_entries; |
257efd1f JG |
1069 | s = hisi_hba->slot_index_count / sizeof(unsigned long); |
1070 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); | |
1071 | if (!hisi_hba->slot_index_tags) | |
1072 | goto err_out; | |
1073 | ||
6be6de18 JG |
1074 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
1075 | sizeof(struct hisi_sas_sge_page), 16, 0); | |
1076 | if (!hisi_hba->sge_page_pool) | |
1077 | goto err_out; | |
1078 | ||
1079 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1080 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, | |
1081 | &hisi_hba->initial_fis_dma, GFP_KERNEL); | |
1082 | if (!hisi_hba->initial_fis) | |
1083 | goto err_out; | |
1084 | memset(hisi_hba->initial_fis, 0, s); | |
1085 | ||
a8d547bd | 1086 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
6be6de18 JG |
1087 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
1088 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); | |
1089 | if (!hisi_hba->sata_breakpoint) | |
1090 | goto err_out; | |
1091 | memset(hisi_hba->sata_breakpoint, 0, s); | |
1092 | ||
257efd1f JG |
1093 | hisi_sas_slot_index_init(hisi_hba); |
1094 | ||
7e9080e1 JG |
1095 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
1096 | if (!hisi_hba->wq) { | |
1097 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); | |
1098 | goto err_out; | |
1099 | } | |
1100 | ||
6be6de18 JG |
1101 | return 0; |
1102 | err_out: | |
1103 | return -ENOMEM; | |
1104 | } | |
1105 | ||
89d53322 JG |
1106 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
1107 | { | |
1108 | struct device *dev = &hisi_hba->pdev->dev; | |
a8d547bd | 1109 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
89d53322 JG |
1110 | |
1111 | for (i = 0; i < hisi_hba->queue_count; i++) { | |
1112 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1113 | if (hisi_hba->cmd_hdr[i]) | |
1114 | dma_free_coherent(dev, s, | |
1115 | hisi_hba->cmd_hdr[i], | |
1116 | hisi_hba->cmd_hdr_dma[i]); | |
1117 | ||
1118 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1119 | if (hisi_hba->complete_hdr[i]) | |
1120 | dma_free_coherent(dev, s, | |
1121 | hisi_hba->complete_hdr[i], | |
1122 | hisi_hba->complete_hdr_dma[i]); | |
1123 | } | |
1124 | ||
1125 | dma_pool_destroy(hisi_hba->status_buffer_pool); | |
1126 | dma_pool_destroy(hisi_hba->command_table_pool); | |
1127 | dma_pool_destroy(hisi_hba->sge_page_pool); | |
1128 | ||
1129 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1130 | if (hisi_hba->itct) | |
1131 | dma_free_coherent(dev, s, | |
1132 | hisi_hba->itct, hisi_hba->itct_dma); | |
1133 | ||
a8d547bd | 1134 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
89d53322 JG |
1135 | if (hisi_hba->iost) |
1136 | dma_free_coherent(dev, s, | |
1137 | hisi_hba->iost, hisi_hba->iost_dma); | |
1138 | ||
a8d547bd | 1139 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
89d53322 JG |
1140 | if (hisi_hba->breakpoint) |
1141 | dma_free_coherent(dev, s, | |
1142 | hisi_hba->breakpoint, | |
1143 | hisi_hba->breakpoint_dma); | |
1144 | ||
1145 | ||
1146 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1147 | if (hisi_hba->initial_fis) | |
1148 | dma_free_coherent(dev, s, | |
1149 | hisi_hba->initial_fis, | |
1150 | hisi_hba->initial_fis_dma); | |
1151 | ||
a8d547bd | 1152 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
89d53322 JG |
1153 | if (hisi_hba->sata_breakpoint) |
1154 | dma_free_coherent(dev, s, | |
1155 | hisi_hba->sata_breakpoint, | |
1156 | hisi_hba->sata_breakpoint_dma); | |
1157 | ||
7e9080e1 JG |
1158 | if (hisi_hba->wq) |
1159 | destroy_workqueue(hisi_hba->wq); | |
89d53322 | 1160 | } |
6be6de18 | 1161 | |
7eb7869f JG |
1162 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
1163 | const struct hisi_sas_hw *hw) | |
1164 | { | |
e26b2f40 | 1165 | struct resource *res; |
7eb7869f JG |
1166 | struct Scsi_Host *shost; |
1167 | struct hisi_hba *hisi_hba; | |
1168 | struct device *dev = &pdev->dev; | |
e26b2f40 | 1169 | struct device_node *np = pdev->dev.of_node; |
7eb7869f JG |
1170 | |
1171 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); | |
1172 | if (!shost) | |
1173 | goto err_out; | |
1174 | hisi_hba = shost_priv(shost); | |
1175 | ||
1176 | hisi_hba->hw = hw; | |
1177 | hisi_hba->pdev = pdev; | |
1178 | hisi_hba->shost = shost; | |
1179 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; | |
1180 | ||
fa42d80d JG |
1181 | init_timer(&hisi_hba->timer); |
1182 | ||
4d558c77 JG |
1183 | if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, |
1184 | SAS_ADDR_SIZE)) | |
e26b2f40 | 1185 | goto err_out; |
e26b2f40 | 1186 | |
4d558c77 JG |
1187 | if (np) { |
1188 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, | |
1189 | "hisilicon,sas-syscon"); | |
1190 | if (IS_ERR(hisi_hba->ctrl)) | |
1191 | goto err_out; | |
e26b2f40 | 1192 | |
4d558c77 JG |
1193 | if (device_property_read_u32(dev, "ctrl-reset-reg", |
1194 | &hisi_hba->ctrl_reset_reg)) | |
1195 | goto err_out; | |
e26b2f40 | 1196 | |
4d558c77 JG |
1197 | if (device_property_read_u32(dev, "ctrl-reset-sts-reg", |
1198 | &hisi_hba->ctrl_reset_sts_reg)) | |
1199 | goto err_out; | |
e26b2f40 | 1200 | |
4d558c77 JG |
1201 | if (device_property_read_u32(dev, "ctrl-clock-ena-reg", |
1202 | &hisi_hba->ctrl_clock_ena_reg)) | |
1203 | goto err_out; | |
1204 | } | |
1205 | ||
1206 | if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) | |
e26b2f40 JG |
1207 | goto err_out; |
1208 | ||
4d558c77 JG |
1209 | if (device_property_read_u32(dev, "queue-count", |
1210 | &hisi_hba->queue_count)) | |
e26b2f40 JG |
1211 | goto err_out; |
1212 | ||
e26b2f40 JG |
1213 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1214 | hisi_hba->regs = devm_ioremap_resource(dev, res); | |
1215 | if (IS_ERR(hisi_hba->regs)) | |
1216 | goto err_out; | |
1217 | ||
89d53322 JG |
1218 | if (hisi_sas_alloc(hisi_hba, shost)) { |
1219 | hisi_sas_free(hisi_hba); | |
6be6de18 | 1220 | goto err_out; |
89d53322 | 1221 | } |
6be6de18 | 1222 | |
7eb7869f JG |
1223 | return shost; |
1224 | err_out: | |
1225 | dev_err(dev, "shost alloc failed\n"); | |
1226 | return NULL; | |
1227 | } | |
1228 | ||
5d74242e JG |
1229 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
1230 | { | |
1231 | int i; | |
1232 | ||
1233 | for (i = 0; i < hisi_hba->n_phy; i++) | |
1234 | memcpy(&hisi_hba->phy[i].dev_sas_addr, | |
1235 | hisi_hba->sas_addr, | |
1236 | SAS_ADDR_SIZE); | |
1237 | } | |
1238 | ||
7eb7869f JG |
1239 | int hisi_sas_probe(struct platform_device *pdev, |
1240 | const struct hisi_sas_hw *hw) | |
1241 | { | |
1242 | struct Scsi_Host *shost; | |
1243 | struct hisi_hba *hisi_hba; | |
1244 | struct device *dev = &pdev->dev; | |
1245 | struct asd_sas_phy **arr_phy; | |
1246 | struct asd_sas_port **arr_port; | |
1247 | struct sas_ha_struct *sha; | |
1248 | int rc, phy_nr, port_nr, i; | |
1249 | ||
1250 | shost = hisi_sas_shost_alloc(pdev, hw); | |
1251 | if (!shost) { | |
1252 | rc = -ENOMEM; | |
1253 | goto err_out_ha; | |
1254 | } | |
1255 | ||
1256 | sha = SHOST_TO_SAS_HA(shost); | |
1257 | hisi_hba = shost_priv(shost); | |
1258 | platform_set_drvdata(pdev, sha); | |
50cb916f JG |
1259 | |
1260 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && | |
1261 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { | |
1262 | dev_err(dev, "No usable DMA addressing method\n"); | |
1263 | rc = -EIO; | |
1264 | goto err_out_ha; | |
1265 | } | |
1266 | ||
7eb7869f JG |
1267 | phy_nr = port_nr = hisi_hba->n_phy; |
1268 | ||
1269 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); | |
1270 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); | |
1271 | if (!arr_phy || !arr_port) | |
1272 | return -ENOMEM; | |
1273 | ||
1274 | sha->sas_phy = arr_phy; | |
1275 | sha->sas_port = arr_port; | |
1276 | sha->core.shost = shost; | |
1277 | sha->lldd_ha = hisi_hba; | |
1278 | ||
1279 | shost->transportt = hisi_sas_stt; | |
1280 | shost->max_id = HISI_SAS_MAX_DEVICES; | |
1281 | shost->max_lun = ~0; | |
1282 | shost->max_channel = 1; | |
1283 | shost->max_cmd_len = 16; | |
1284 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); | |
a8d547bd JG |
1285 | shost->can_queue = hisi_hba->hw->max_command_entries; |
1286 | shost->cmd_per_lun = hisi_hba->hw->max_command_entries; | |
7eb7869f JG |
1287 | |
1288 | sha->sas_ha_name = DRV_NAME; | |
1289 | sha->dev = &hisi_hba->pdev->dev; | |
1290 | sha->lldd_module = THIS_MODULE; | |
1291 | sha->sas_addr = &hisi_hba->sas_addr[0]; | |
1292 | sha->num_phys = hisi_hba->n_phy; | |
1293 | sha->core.shost = hisi_hba->shost; | |
1294 | ||
1295 | for (i = 0; i < hisi_hba->n_phy; i++) { | |
1296 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; | |
1297 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; | |
1298 | } | |
1299 | ||
5d74242e JG |
1300 | hisi_sas_init_add(hisi_hba); |
1301 | ||
8ff1d571 JG |
1302 | rc = hisi_hba->hw->hw_init(hisi_hba); |
1303 | if (rc) | |
1304 | goto err_out_ha; | |
1305 | ||
7eb7869f JG |
1306 | rc = scsi_add_host(shost, &pdev->dev); |
1307 | if (rc) | |
1308 | goto err_out_ha; | |
1309 | ||
1310 | rc = sas_register_ha(sha); | |
1311 | if (rc) | |
1312 | goto err_out_register_ha; | |
1313 | ||
1314 | scsi_scan_host(shost); | |
1315 | ||
1316 | return 0; | |
1317 | ||
1318 | err_out_register_ha: | |
1319 | scsi_remove_host(shost); | |
1320 | err_out_ha: | |
1321 | kfree(shost); | |
1322 | return rc; | |
1323 | } | |
1324 | EXPORT_SYMBOL_GPL(hisi_sas_probe); | |
1325 | ||
89d53322 JG |
1326 | int hisi_sas_remove(struct platform_device *pdev) |
1327 | { | |
1328 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); | |
1329 | struct hisi_hba *hisi_hba = sha->lldd_ha; | |
1330 | ||
1331 | scsi_remove_host(sha->core.shost); | |
1332 | sas_unregister_ha(sha); | |
1333 | sas_remove_host(sha->core.shost); | |
1334 | ||
1335 | hisi_sas_free(hisi_hba); | |
1336 | return 0; | |
1337 | } | |
1338 | EXPORT_SYMBOL_GPL(hisi_sas_remove); | |
1339 | ||
e8899fad JG |
1340 | static __init int hisi_sas_init(void) |
1341 | { | |
1342 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); | |
1343 | ||
1344 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); | |
1345 | if (!hisi_sas_stt) | |
1346 | return -ENOMEM; | |
1347 | ||
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | static __exit void hisi_sas_exit(void) | |
1352 | { | |
1353 | sas_release_transport(hisi_sas_stt); | |
1354 | } | |
1355 | ||
1356 | module_init(hisi_sas_init); | |
1357 | module_exit(hisi_sas_exit); | |
1358 | ||
1359 | MODULE_VERSION(DRV_VERSION); | |
1360 | MODULE_LICENSE("GPL"); | |
1361 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); | |
1362 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); | |
1363 | MODULE_ALIAS("platform:" DRV_NAME); |