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Commit | Line | Data |
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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 | ||
cac9b2a2 JG |
18 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, |
19 | u8 *lun, struct hisi_sas_tmf_task *tmf); | |
20 | ||
42e7a693 JG |
21 | static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) |
22 | { | |
23 | return device->port->ha->lldd_ha; | |
24 | } | |
25 | ||
257efd1f JG |
26 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
27 | { | |
28 | void *bitmap = hisi_hba->slot_index_tags; | |
29 | ||
30 | clear_bit(slot_idx, bitmap); | |
31 | } | |
32 | ||
42e7a693 JG |
33 | static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) |
34 | { | |
35 | hisi_sas_slot_index_clear(hisi_hba, slot_idx); | |
36 | } | |
37 | ||
38 | static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) | |
39 | { | |
40 | void *bitmap = hisi_hba->slot_index_tags; | |
41 | ||
42 | set_bit(slot_idx, bitmap); | |
43 | } | |
44 | ||
45 | static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx) | |
46 | { | |
47 | unsigned int index; | |
48 | void *bitmap = hisi_hba->slot_index_tags; | |
49 | ||
50 | index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count); | |
51 | if (index >= hisi_hba->slot_index_count) | |
52 | return -SAS_QUEUE_FULL; | |
53 | hisi_sas_slot_index_set(hisi_hba, index); | |
54 | *slot_idx = index; | |
55 | return 0; | |
56 | } | |
57 | ||
257efd1f JG |
58 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
59 | { | |
60 | int i; | |
61 | ||
62 | for (i = 0; i < hisi_hba->slot_index_count; ++i) | |
63 | hisi_sas_slot_index_clear(hisi_hba, i); | |
64 | } | |
27a3f229 JG |
65 | |
66 | void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, | |
67 | struct hisi_sas_slot *slot) | |
68 | { | |
69 | struct device *dev = &hisi_hba->pdev->dev; | |
70 | ||
71 | if (!slot->task) | |
72 | return; | |
73 | ||
74 | if (!sas_protocol_ata(task->task_proto)) | |
75 | if (slot->n_elem) | |
76 | dma_unmap_sg(dev, task->scatter, slot->n_elem, | |
77 | task->data_dir); | |
78 | ||
79 | if (slot->command_table) | |
80 | dma_pool_free(hisi_hba->command_table_pool, | |
81 | slot->command_table, slot->command_table_dma); | |
82 | ||
83 | if (slot->status_buffer) | |
84 | dma_pool_free(hisi_hba->status_buffer_pool, | |
85 | slot->status_buffer, slot->status_buffer_dma); | |
86 | ||
87 | if (slot->sge_page) | |
88 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
89 | slot->sge_page_dma); | |
90 | ||
91 | list_del_init(&slot->entry); | |
92 | task->lldd_task = NULL; | |
93 | slot->task = NULL; | |
94 | slot->port = NULL; | |
95 | hisi_sas_slot_index_free(hisi_hba, slot->idx); | |
96 | memset(slot, 0, sizeof(*slot)); | |
97 | } | |
98 | EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); | |
99 | ||
66ee999b JG |
100 | static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, |
101 | struct hisi_sas_slot *slot) | |
102 | { | |
103 | return hisi_hba->hw->prep_smp(hisi_hba, slot); | |
104 | } | |
105 | ||
42e7a693 JG |
106 | static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, |
107 | struct hisi_sas_slot *slot, int is_tmf, | |
108 | struct hisi_sas_tmf_task *tmf) | |
109 | { | |
110 | return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
111 | } | |
112 | ||
6f2ff1a1 JG |
113 | static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, |
114 | struct hisi_sas_slot *slot) | |
115 | { | |
116 | return hisi_hba->hw->prep_stp(hisi_hba, slot); | |
117 | } | |
118 | ||
cac9b2a2 JG |
119 | /* |
120 | * This function will issue an abort TMF regardless of whether the | |
121 | * task is in the sdev or not. Then it will do the task complete | |
122 | * cleanup and callbacks. | |
123 | */ | |
124 | static void hisi_sas_slot_abort(struct work_struct *work) | |
125 | { | |
126 | struct hisi_sas_slot *abort_slot = | |
127 | container_of(work, struct hisi_sas_slot, abort_slot); | |
128 | struct sas_task *task = abort_slot->task; | |
129 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
130 | struct scsi_cmnd *cmnd = task->uldd_task; | |
131 | struct hisi_sas_tmf_task tmf_task; | |
132 | struct domain_device *device = task->dev; | |
133 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
134 | struct scsi_lun lun; | |
135 | struct device *dev = &hisi_hba->pdev->dev; | |
136 | int tag = abort_slot->idx; | |
137 | ||
138 | if (!(task->task_proto & SAS_PROTOCOL_SSP)) { | |
139 | dev_err(dev, "cannot abort slot for non-ssp task\n"); | |
140 | goto out; | |
141 | } | |
142 | ||
143 | int_to_scsilun(cmnd->device->lun, &lun); | |
144 | tmf_task.tmf = TMF_ABORT_TASK; | |
145 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
146 | ||
147 | hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task); | |
148 | out: | |
149 | /* Do cleanup for this task */ | |
150 | hisi_sas_slot_task_free(hisi_hba, task, abort_slot); | |
151 | if (task->task_done) | |
152 | task->task_done(task); | |
153 | if (sas_dev && sas_dev->running_req) | |
154 | sas_dev->running_req--; | |
155 | } | |
156 | ||
42e7a693 JG |
157 | static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba, |
158 | int is_tmf, struct hisi_sas_tmf_task *tmf, | |
159 | int *pass) | |
160 | { | |
161 | struct domain_device *device = task->dev; | |
162 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
163 | struct hisi_sas_port *port; | |
164 | struct hisi_sas_slot *slot; | |
165 | struct hisi_sas_cmd_hdr *cmd_hdr_base; | |
166 | struct device *dev = &hisi_hba->pdev->dev; | |
167 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; | |
168 | ||
169 | if (!device->port) { | |
170 | struct task_status_struct *ts = &task->task_status; | |
171 | ||
172 | ts->resp = SAS_TASK_UNDELIVERED; | |
173 | ts->stat = SAS_PHY_DOWN; | |
174 | /* | |
175 | * libsas will use dev->port, should | |
176 | * not call task_done for sata | |
177 | */ | |
178 | if (device->dev_type != SAS_SATA_DEV) | |
179 | task->task_done(task); | |
180 | return 0; | |
181 | } | |
182 | ||
183 | if (DEV_IS_GONE(sas_dev)) { | |
184 | if (sas_dev) | |
185 | dev_info(dev, "task prep: device %llu not ready\n", | |
186 | sas_dev->device_id); | |
187 | else | |
188 | dev_info(dev, "task prep: device %016llx not ready\n", | |
189 | SAS_ADDR(device->sas_addr)); | |
190 | ||
191 | rc = SAS_PHY_DOWN; | |
192 | return rc; | |
193 | } | |
194 | port = device->port->lldd_port; | |
195 | if (port && !port->port_attached && !tmf) { | |
196 | if (sas_protocol_ata(task->task_proto)) { | |
197 | struct task_status_struct *ts = &task->task_status; | |
198 | ||
199 | dev_info(dev, | |
200 | "task prep: SATA/STP port%d not attach device\n", | |
201 | device->port->id); | |
202 | ts->resp = SAS_TASK_COMPLETE; | |
203 | ts->stat = SAS_PHY_DOWN; | |
204 | task->task_done(task); | |
205 | } else { | |
206 | struct task_status_struct *ts = &task->task_status; | |
207 | ||
208 | dev_info(dev, | |
209 | "task prep: SAS port%d does not attach device\n", | |
210 | device->port->id); | |
211 | ts->resp = SAS_TASK_UNDELIVERED; | |
212 | ts->stat = SAS_PHY_DOWN; | |
213 | task->task_done(task); | |
214 | } | |
215 | return 0; | |
216 | } | |
217 | ||
218 | if (!sas_protocol_ata(task->task_proto)) { | |
219 | if (task->num_scatter) { | |
220 | n_elem = dma_map_sg(dev, task->scatter, | |
221 | task->num_scatter, task->data_dir); | |
222 | if (!n_elem) { | |
223 | rc = -ENOMEM; | |
224 | goto prep_out; | |
225 | } | |
226 | } | |
227 | } else | |
228 | n_elem = task->num_scatter; | |
229 | ||
230 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); | |
231 | if (rc) | |
232 | goto err_out; | |
233 | rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue, | |
234 | &dlvry_queue_slot); | |
235 | if (rc) | |
236 | goto err_out_tag; | |
237 | ||
238 | slot = &hisi_hba->slot_info[slot_idx]; | |
239 | memset(slot, 0, sizeof(struct hisi_sas_slot)); | |
240 | ||
241 | slot->idx = slot_idx; | |
242 | slot->n_elem = n_elem; | |
243 | slot->dlvry_queue = dlvry_queue; | |
244 | slot->dlvry_queue_slot = dlvry_queue_slot; | |
245 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; | |
246 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; | |
247 | slot->task = task; | |
248 | slot->port = port; | |
249 | task->lldd_task = slot; | |
cac9b2a2 | 250 | INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort); |
42e7a693 JG |
251 | |
252 | slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool, | |
253 | GFP_ATOMIC, | |
254 | &slot->status_buffer_dma); | |
9c9d18e7 DC |
255 | if (!slot->status_buffer) { |
256 | rc = -ENOMEM; | |
42e7a693 | 257 | goto err_out_slot_buf; |
9c9d18e7 | 258 | } |
42e7a693 JG |
259 | memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ); |
260 | ||
261 | slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool, | |
262 | GFP_ATOMIC, | |
263 | &slot->command_table_dma); | |
9c9d18e7 DC |
264 | if (!slot->command_table) { |
265 | rc = -ENOMEM; | |
42e7a693 | 266 | goto err_out_status_buf; |
9c9d18e7 | 267 | } |
42e7a693 JG |
268 | memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ); |
269 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); | |
270 | ||
271 | switch (task->task_proto) { | |
66ee999b JG |
272 | case SAS_PROTOCOL_SMP: |
273 | rc = hisi_sas_task_prep_smp(hisi_hba, slot); | |
274 | break; | |
42e7a693 JG |
275 | case SAS_PROTOCOL_SSP: |
276 | rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
277 | break; | |
278 | case SAS_PROTOCOL_SATA: | |
279 | case SAS_PROTOCOL_STP: | |
280 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: | |
6f2ff1a1 JG |
281 | rc = hisi_sas_task_prep_ata(hisi_hba, slot); |
282 | break; | |
42e7a693 JG |
283 | default: |
284 | dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", | |
285 | task->task_proto); | |
286 | rc = -EINVAL; | |
287 | break; | |
288 | } | |
289 | ||
290 | if (rc) { | |
291 | dev_err(dev, "task prep: rc = 0x%x\n", rc); | |
292 | if (slot->sge_page) | |
293 | goto err_out_sge; | |
294 | goto err_out_command_table; | |
295 | } | |
296 | ||
297 | list_add_tail(&slot->entry, &port->list); | |
298 | spin_lock(&task->task_state_lock); | |
299 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
300 | spin_unlock(&task->task_state_lock); | |
301 | ||
302 | hisi_hba->slot_prep = slot; | |
303 | ||
304 | sas_dev->running_req++; | |
305 | ++(*pass); | |
306 | ||
9c9d18e7 | 307 | return 0; |
42e7a693 JG |
308 | |
309 | err_out_sge: | |
310 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
311 | slot->sge_page_dma); | |
312 | err_out_command_table: | |
313 | dma_pool_free(hisi_hba->command_table_pool, slot->command_table, | |
314 | slot->command_table_dma); | |
315 | err_out_status_buf: | |
316 | dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer, | |
317 | slot->status_buffer_dma); | |
318 | err_out_slot_buf: | |
319 | /* Nothing to be done */ | |
320 | err_out_tag: | |
321 | hisi_sas_slot_index_free(hisi_hba, slot_idx); | |
322 | err_out: | |
323 | dev_err(dev, "task prep: failed[%d]!\n", rc); | |
324 | if (!sas_protocol_ata(task->task_proto)) | |
325 | if (n_elem) | |
326 | dma_unmap_sg(dev, task->scatter, n_elem, | |
327 | task->data_dir); | |
328 | prep_out: | |
329 | return rc; | |
330 | } | |
331 | ||
332 | static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, | |
333 | int is_tmf, struct hisi_sas_tmf_task *tmf) | |
334 | { | |
335 | u32 rc; | |
336 | u32 pass = 0; | |
337 | unsigned long flags; | |
338 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
339 | struct device *dev = &hisi_hba->pdev->dev; | |
340 | ||
341 | /* protect task_prep and start_delivery sequence */ | |
342 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
343 | rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass); | |
344 | if (rc) | |
345 | dev_err(dev, "task exec: failed[%d]!\n", rc); | |
346 | ||
347 | if (likely(pass)) | |
348 | hisi_hba->hw->start_delivery(hisi_hba); | |
349 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
350 | ||
351 | return rc; | |
352 | } | |
257efd1f | 353 | |
66139921 JG |
354 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
355 | { | |
356 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
357 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
358 | struct sas_ha_struct *sas_ha; | |
359 | ||
360 | if (!phy->phy_attached) | |
361 | return; | |
362 | ||
363 | sas_ha = &hisi_hba->sha; | |
364 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); | |
365 | ||
366 | if (sas_phy->phy) { | |
367 | struct sas_phy *sphy = sas_phy->phy; | |
368 | ||
369 | sphy->negotiated_linkrate = sas_phy->linkrate; | |
370 | sphy->minimum_linkrate = phy->minimum_linkrate; | |
371 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; | |
372 | sphy->maximum_linkrate = phy->maximum_linkrate; | |
373 | } | |
374 | ||
375 | if (phy->phy_type & PORT_TYPE_SAS) { | |
376 | struct sas_identify_frame *id; | |
377 | ||
378 | id = (struct sas_identify_frame *)phy->frame_rcvd; | |
379 | id->dev_type = phy->identify.device_type; | |
380 | id->initiator_bits = SAS_PROTOCOL_ALL; | |
381 | id->target_bits = phy->identify.target_port_protocols; | |
382 | } else if (phy->phy_type & PORT_TYPE_SATA) { | |
383 | /*Nothing*/ | |
384 | } | |
385 | ||
386 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; | |
387 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); | |
388 | } | |
389 | ||
abda97c2 JG |
390 | static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) |
391 | { | |
392 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
393 | struct hisi_sas_device *sas_dev = NULL; | |
394 | int i; | |
395 | ||
396 | spin_lock(&hisi_hba->lock); | |
397 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { | |
398 | if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { | |
399 | hisi_hba->devices[i].device_id = i; | |
400 | sas_dev = &hisi_hba->devices[i]; | |
401 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
402 | sas_dev->dev_type = device->dev_type; | |
403 | sas_dev->hisi_hba = hisi_hba; | |
404 | sas_dev->sas_device = device; | |
405 | break; | |
406 | } | |
407 | } | |
408 | spin_unlock(&hisi_hba->lock); | |
409 | ||
410 | return sas_dev; | |
411 | } | |
412 | ||
413 | static int hisi_sas_dev_found(struct domain_device *device) | |
414 | { | |
415 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
416 | struct domain_device *parent_dev = device->parent; | |
417 | struct hisi_sas_device *sas_dev; | |
418 | struct device *dev = &hisi_hba->pdev->dev; | |
419 | ||
420 | sas_dev = hisi_sas_alloc_dev(device); | |
421 | if (!sas_dev) { | |
422 | dev_err(dev, "fail alloc dev: max support %d devices\n", | |
423 | HISI_SAS_MAX_DEVICES); | |
424 | return -EINVAL; | |
425 | } | |
426 | ||
427 | device->lldd_dev = sas_dev; | |
428 | hisi_hba->hw->setup_itct(hisi_hba, sas_dev); | |
429 | ||
430 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { | |
431 | int phy_no; | |
432 | u8 phy_num = parent_dev->ex_dev.num_phys; | |
433 | struct ex_phy *phy; | |
434 | ||
435 | for (phy_no = 0; phy_no < phy_num; phy_no++) { | |
436 | phy = &parent_dev->ex_dev.ex_phy[phy_no]; | |
437 | if (SAS_ADDR(phy->attached_sas_addr) == | |
438 | SAS_ADDR(device->sas_addr)) { | |
439 | sas_dev->attached_phy = phy_no; | |
440 | break; | |
441 | } | |
442 | } | |
443 | ||
444 | if (phy_no == phy_num) { | |
445 | dev_info(dev, "dev found: no attached " | |
446 | "dev:%016llx at ex:%016llx\n", | |
447 | SAS_ADDR(device->sas_addr), | |
448 | SAS_ADDR(parent_dev->sas_addr)); | |
449 | return -EINVAL; | |
450 | } | |
451 | } | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
31eec8a6 JG |
456 | static int hisi_sas_slave_configure(struct scsi_device *sdev) |
457 | { | |
458 | struct domain_device *dev = sdev_to_domain_dev(sdev); | |
459 | int ret = sas_slave_configure(sdev); | |
460 | ||
461 | if (ret) | |
462 | return ret; | |
463 | if (!dev_is_sata(dev)) | |
464 | sas_change_queue_depth(sdev, 64); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
701f75ec JG |
469 | static void hisi_sas_scan_start(struct Scsi_Host *shost) |
470 | { | |
471 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
472 | int i; | |
473 | ||
474 | for (i = 0; i < hisi_hba->n_phy; ++i) | |
475 | hisi_sas_bytes_dmaed(hisi_hba, i); | |
476 | ||
477 | hisi_hba->scan_finished = 1; | |
478 | } | |
479 | ||
480 | static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
481 | { | |
482 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
483 | struct sas_ha_struct *sha = &hisi_hba->sha; | |
484 | ||
485 | if (hisi_hba->scan_finished == 0) | |
486 | return 0; | |
487 | ||
488 | sas_drain_work(sha); | |
489 | return 1; | |
490 | } | |
491 | ||
66139921 JG |
492 | static void hisi_sas_phyup_work(struct work_struct *work) |
493 | { | |
494 | struct hisi_sas_phy *phy = | |
495 | container_of(work, struct hisi_sas_phy, phyup_ws); | |
496 | struct hisi_hba *hisi_hba = phy->hisi_hba; | |
497 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
498 | int phy_no = sas_phy->id; | |
499 | ||
500 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ | |
501 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
502 | } | |
976867e6 JG |
503 | |
504 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) | |
505 | { | |
506 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
507 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
508 | ||
509 | phy->hisi_hba = hisi_hba; | |
510 | phy->port = NULL; | |
511 | init_timer(&phy->timer); | |
512 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; | |
513 | sas_phy->class = SAS; | |
514 | sas_phy->iproto = SAS_PROTOCOL_ALL; | |
515 | sas_phy->tproto = 0; | |
516 | sas_phy->type = PHY_TYPE_PHYSICAL; | |
517 | sas_phy->role = PHY_ROLE_INITIATOR; | |
518 | sas_phy->oob_mode = OOB_NOT_CONNECTED; | |
519 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; | |
520 | sas_phy->id = phy_no; | |
521 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; | |
522 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; | |
523 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; | |
524 | sas_phy->lldd_phy = phy; | |
66139921 JG |
525 | |
526 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); | |
976867e6 JG |
527 | } |
528 | ||
184a4635 JG |
529 | static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) |
530 | { | |
531 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
532 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
533 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
534 | struct asd_sas_port *sas_port = sas_phy->port; | |
535 | struct hisi_sas_port *port = &hisi_hba->port[sas_phy->id]; | |
536 | unsigned long flags; | |
537 | ||
538 | if (!sas_port) | |
539 | return; | |
540 | ||
541 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
542 | port->port_attached = 1; | |
543 | port->id = phy->port_id; | |
544 | phy->port = port; | |
545 | sas_port->lldd_port = port; | |
546 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
547 | } | |
548 | ||
549 | static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no, | |
550 | struct domain_device *device) | |
551 | { | |
552 | struct hisi_sas_phy *phy; | |
553 | struct hisi_sas_port *port; | |
554 | struct hisi_sas_slot *slot, *slot2; | |
555 | struct device *dev = &hisi_hba->pdev->dev; | |
556 | ||
557 | phy = &hisi_hba->phy[phy_no]; | |
558 | port = phy->port; | |
559 | if (!port) | |
560 | return; | |
561 | ||
562 | list_for_each_entry_safe(slot, slot2, &port->list, entry) { | |
563 | struct sas_task *task; | |
564 | ||
565 | task = slot->task; | |
566 | if (device && task->dev != device) | |
567 | continue; | |
568 | ||
569 | dev_info(dev, "Release slot [%d:%d], task [%p]:\n", | |
570 | slot->dlvry_queue, slot->dlvry_queue_slot, task); | |
571 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
572 | } | |
573 | } | |
574 | ||
575 | static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy) | |
576 | { | |
577 | struct domain_device *device; | |
578 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
579 | struct asd_sas_port *sas_port = sas_phy->port; | |
580 | ||
581 | list_for_each_entry(device, &sas_port->dev_list, dev_list_node) | |
582 | hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device); | |
583 | } | |
584 | ||
585 | static void hisi_sas_release_task(struct hisi_hba *hisi_hba, | |
586 | struct domain_device *device) | |
587 | { | |
588 | struct asd_sas_port *port = device->port; | |
589 | struct asd_sas_phy *sas_phy; | |
590 | ||
591 | list_for_each_entry(sas_phy, &port->phy_list, port_phy_el) | |
592 | hisi_sas_do_release_task(hisi_hba, sas_phy->id, device); | |
593 | } | |
594 | ||
abda97c2 JG |
595 | static void hisi_sas_dev_gone(struct domain_device *device) |
596 | { | |
597 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
598 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
599 | struct device *dev = &hisi_hba->pdev->dev; | |
600 | u64 dev_id = sas_dev->device_id; | |
601 | ||
602 | dev_info(dev, "found dev[%lld:%x] is gone\n", | |
603 | sas_dev->device_id, sas_dev->dev_type); | |
604 | ||
605 | hisi_hba->hw->free_device(hisi_hba, sas_dev); | |
606 | device->lldd_dev = NULL; | |
607 | memset(sas_dev, 0, sizeof(*sas_dev)); | |
608 | sas_dev->device_id = dev_id; | |
609 | sas_dev->dev_type = SAS_PHY_UNUSED; | |
610 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
611 | } | |
42e7a693 JG |
612 | |
613 | static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) | |
614 | { | |
615 | return hisi_sas_task_exec(task, gfp_flags, 0, NULL); | |
616 | } | |
617 | ||
e4189d53 JG |
618 | static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, |
619 | void *funcdata) | |
620 | { | |
621 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
622 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
623 | int phy_no = sas_phy->id; | |
624 | ||
625 | switch (func) { | |
626 | case PHY_FUNC_HARD_RESET: | |
627 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
628 | break; | |
629 | ||
630 | case PHY_FUNC_LINK_RESET: | |
631 | hisi_hba->hw->phy_enable(hisi_hba, phy_no); | |
632 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
633 | break; | |
634 | ||
635 | case PHY_FUNC_DISABLE: | |
636 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); | |
637 | break; | |
638 | ||
639 | case PHY_FUNC_SET_LINK_RATE: | |
640 | case PHY_FUNC_RELEASE_SPINUP_HOLD: | |
641 | default: | |
642 | return -EOPNOTSUPP; | |
643 | } | |
644 | return 0; | |
645 | } | |
184a4635 | 646 | |
0efff300 JG |
647 | static void hisi_sas_task_done(struct sas_task *task) |
648 | { | |
649 | if (!del_timer(&task->slow_task->timer)) | |
650 | return; | |
651 | complete(&task->slow_task->completion); | |
652 | } | |
653 | ||
654 | static void hisi_sas_tmf_timedout(unsigned long data) | |
655 | { | |
656 | struct sas_task *task = (struct sas_task *)data; | |
657 | ||
658 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
659 | complete(&task->slow_task->completion); | |
660 | } | |
661 | ||
662 | #define TASK_TIMEOUT 20 | |
663 | #define TASK_RETRY 3 | |
664 | static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, | |
665 | void *parameter, u32 para_len, | |
666 | struct hisi_sas_tmf_task *tmf) | |
667 | { | |
668 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
669 | struct hisi_hba *hisi_hba = sas_dev->hisi_hba; | |
670 | struct device *dev = &hisi_hba->pdev->dev; | |
671 | struct sas_task *task; | |
672 | int res, retry; | |
673 | ||
674 | for (retry = 0; retry < TASK_RETRY; retry++) { | |
675 | task = sas_alloc_slow_task(GFP_KERNEL); | |
676 | if (!task) | |
677 | return -ENOMEM; | |
678 | ||
679 | task->dev = device; | |
680 | task->task_proto = device->tproto; | |
681 | ||
682 | memcpy(&task->ssp_task, parameter, para_len); | |
683 | task->task_done = hisi_sas_task_done; | |
684 | ||
685 | task->slow_task->timer.data = (unsigned long) task; | |
686 | task->slow_task->timer.function = hisi_sas_tmf_timedout; | |
687 | task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; | |
688 | add_timer(&task->slow_task->timer); | |
689 | ||
690 | res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); | |
691 | ||
692 | if (res) { | |
693 | del_timer(&task->slow_task->timer); | |
694 | dev_err(dev, "abort tmf: executing internal task failed: %d\n", | |
695 | res); | |
696 | goto ex_err; | |
697 | } | |
698 | ||
699 | wait_for_completion(&task->slow_task->completion); | |
700 | res = TMF_RESP_FUNC_FAILED; | |
701 | /* Even TMF timed out, return direct. */ | |
702 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
703 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
704 | dev_err(dev, "abort tmf: TMF task[%d] timeout\n", | |
705 | tmf->tag_of_task_to_be_managed); | |
706 | if (task->lldd_task) { | |
707 | struct hisi_sas_slot *slot = | |
708 | task->lldd_task; | |
709 | ||
710 | hisi_sas_slot_task_free(hisi_hba, | |
711 | task, slot); | |
712 | } | |
713 | ||
714 | goto ex_err; | |
715 | } | |
716 | } | |
717 | ||
718 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
1af1b808 | 719 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
0efff300 JG |
720 | res = TMF_RESP_FUNC_COMPLETE; |
721 | break; | |
722 | } | |
723 | ||
724 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
725 | task->task_status.stat == SAS_DATA_UNDERRUN) { | |
726 | /* no error, but return the number of bytes of | |
727 | * underrun | |
728 | */ | |
729 | dev_warn(dev, "abort tmf: task to dev %016llx " | |
730 | "resp: 0x%x sts 0x%x underrun\n", | |
731 | SAS_ADDR(device->sas_addr), | |
732 | task->task_status.resp, | |
733 | task->task_status.stat); | |
734 | res = task->task_status.residual; | |
735 | break; | |
736 | } | |
737 | ||
738 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
739 | task->task_status.stat == SAS_DATA_OVERRUN) { | |
740 | dev_warn(dev, "abort tmf: blocked task error\n"); | |
741 | res = -EMSGSIZE; | |
742 | break; | |
743 | } | |
744 | ||
745 | dev_warn(dev, "abort tmf: task to dev " | |
746 | "%016llx resp: 0x%x status 0x%x\n", | |
747 | SAS_ADDR(device->sas_addr), task->task_status.resp, | |
748 | task->task_status.stat); | |
749 | sas_free_task(task); | |
750 | task = NULL; | |
751 | } | |
752 | ex_err: | |
753 | WARN_ON(retry == TASK_RETRY); | |
754 | sas_free_task(task); | |
755 | return res; | |
756 | } | |
757 | ||
758 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, | |
759 | u8 *lun, struct hisi_sas_tmf_task *tmf) | |
760 | { | |
761 | struct sas_ssp_task ssp_task; | |
762 | ||
763 | if (!(device->tproto & SAS_PROTOCOL_SSP)) | |
764 | return TMF_RESP_FUNC_ESUPP; | |
765 | ||
766 | memcpy(ssp_task.LUN, lun, 8); | |
767 | ||
768 | return hisi_sas_exec_internal_tmf_task(device, &ssp_task, | |
769 | sizeof(ssp_task), tmf); | |
770 | } | |
771 | ||
772 | static int hisi_sas_abort_task(struct sas_task *task) | |
773 | { | |
774 | struct scsi_lun lun; | |
775 | struct hisi_sas_tmf_task tmf_task; | |
776 | struct domain_device *device = task->dev; | |
777 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
778 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
779 | struct device *dev = &hisi_hba->pdev->dev; | |
780 | int rc = TMF_RESP_FUNC_FAILED; | |
781 | unsigned long flags; | |
782 | ||
783 | if (!sas_dev) { | |
784 | dev_warn(dev, "Device has been removed\n"); | |
785 | return TMF_RESP_FUNC_FAILED; | |
786 | } | |
787 | ||
788 | spin_lock_irqsave(&task->task_state_lock, flags); | |
789 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
790 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
791 | rc = TMF_RESP_FUNC_COMPLETE; | |
792 | goto out; | |
793 | } | |
794 | ||
795 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
796 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
797 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
798 | struct scsi_cmnd *cmnd = task->uldd_task; | |
799 | struct hisi_sas_slot *slot = task->lldd_task; | |
800 | u32 tag = slot->idx; | |
801 | ||
802 | int_to_scsilun(cmnd->device->lun, &lun); | |
803 | tmf_task.tmf = TMF_ABORT_TASK; | |
804 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
805 | ||
806 | rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, | |
807 | &tmf_task); | |
808 | ||
809 | /* if successful, clear the task and callback forwards.*/ | |
810 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
811 | if (task->lldd_task) { | |
812 | struct hisi_sas_slot *slot; | |
813 | ||
814 | slot = &hisi_hba->slot_info | |
815 | [tmf_task.tag_of_task_to_be_managed]; | |
816 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
817 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
818 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
819 | } | |
820 | } | |
821 | ||
822 | } else if (task->task_proto & SAS_PROTOCOL_SATA || | |
823 | task->task_proto & SAS_PROTOCOL_STP) { | |
824 | if (task->dev->dev_type == SAS_SATA_DEV) { | |
825 | struct hisi_slot_info *slot = task->lldd_task; | |
826 | ||
827 | dev_notice(dev, "abort task: hba=%p task=%p slot=%p\n", | |
828 | hisi_hba, task, slot); | |
829 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
830 | rc = TMF_RESP_FUNC_COMPLETE; | |
831 | goto out; | |
832 | } | |
833 | ||
834 | } | |
835 | ||
836 | out: | |
837 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
838 | dev_notice(dev, "abort task: rc=%d\n", rc); | |
839 | return rc; | |
840 | } | |
841 | ||
842 | static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) | |
843 | { | |
844 | struct hisi_sas_tmf_task tmf_task; | |
845 | int rc = TMF_RESP_FUNC_FAILED; | |
846 | ||
847 | tmf_task.tmf = TMF_ABORT_TASK_SET; | |
848 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
849 | ||
850 | return rc; | |
851 | } | |
852 | ||
853 | static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) | |
854 | { | |
855 | int rc = TMF_RESP_FUNC_FAILED; | |
856 | struct hisi_sas_tmf_task tmf_task; | |
857 | ||
858 | tmf_task.tmf = TMF_CLEAR_ACA; | |
859 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
860 | ||
861 | return rc; | |
862 | } | |
863 | ||
864 | static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) | |
865 | { | |
866 | struct sas_phy *phy = sas_get_local_phy(device); | |
867 | int rc, reset_type = (device->dev_type == SAS_SATA_DEV || | |
868 | (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; | |
869 | rc = sas_phy_reset(phy, reset_type); | |
870 | sas_put_local_phy(phy); | |
871 | msleep(2000); | |
872 | return rc; | |
873 | } | |
874 | ||
875 | static int hisi_sas_I_T_nexus_reset(struct domain_device *device) | |
876 | { | |
877 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
878 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
879 | unsigned long flags; | |
880 | int rc = TMF_RESP_FUNC_FAILED; | |
881 | ||
882 | if (sas_dev->dev_status != HISI_SAS_DEV_EH) | |
883 | return TMF_RESP_FUNC_FAILED; | |
884 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
885 | ||
886 | rc = hisi_sas_debug_I_T_nexus_reset(device); | |
887 | ||
888 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
889 | hisi_sas_release_task(hisi_hba, device); | |
890 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
891 | ||
892 | return 0; | |
893 | } | |
894 | ||
895 | static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) | |
896 | { | |
897 | struct hisi_sas_tmf_task tmf_task; | |
898 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
899 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
900 | struct device *dev = &hisi_hba->pdev->dev; | |
901 | unsigned long flags; | |
902 | int rc = TMF_RESP_FUNC_FAILED; | |
903 | ||
904 | tmf_task.tmf = TMF_LU_RESET; | |
905 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
906 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
907 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
908 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
909 | hisi_sas_release_task(hisi_hba, device); | |
910 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
911 | } | |
912 | ||
913 | /* If failed, fall-through I_T_Nexus reset */ | |
914 | dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n", | |
915 | sas_dev->device_id, rc); | |
916 | return rc; | |
917 | } | |
918 | ||
919 | static int hisi_sas_query_task(struct sas_task *task) | |
920 | { | |
921 | struct scsi_lun lun; | |
922 | struct hisi_sas_tmf_task tmf_task; | |
923 | int rc = TMF_RESP_FUNC_FAILED; | |
924 | ||
925 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
926 | struct scsi_cmnd *cmnd = task->uldd_task; | |
927 | struct domain_device *device = task->dev; | |
928 | struct hisi_sas_slot *slot = task->lldd_task; | |
929 | u32 tag = slot->idx; | |
930 | ||
931 | int_to_scsilun(cmnd->device->lun, &lun); | |
932 | tmf_task.tmf = TMF_QUERY_TASK; | |
933 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
934 | ||
935 | rc = hisi_sas_debug_issue_ssp_tmf(device, | |
936 | lun.scsi_lun, | |
937 | &tmf_task); | |
938 | switch (rc) { | |
939 | /* The task is still in Lun, release it then */ | |
940 | case TMF_RESP_FUNC_SUCC: | |
941 | /* The task is not in Lun or failed, reset the phy */ | |
942 | case TMF_RESP_FUNC_FAILED: | |
943 | case TMF_RESP_FUNC_COMPLETE: | |
944 | break; | |
945 | } | |
946 | } | |
947 | return rc; | |
948 | } | |
949 | ||
184a4635 JG |
950 | static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) |
951 | { | |
952 | hisi_sas_port_notify_formed(sas_phy); | |
953 | } | |
954 | ||
955 | static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy) | |
956 | { | |
957 | hisi_sas_port_notify_deformed(sas_phy); | |
958 | } | |
959 | ||
960 | static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) | |
961 | { | |
962 | phy->phy_attached = 0; | |
963 | phy->phy_type = 0; | |
964 | phy->port = NULL; | |
965 | } | |
966 | ||
967 | void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) | |
968 | { | |
969 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
970 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
971 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; | |
972 | ||
973 | if (rdy) { | |
974 | /* Phy down but ready */ | |
975 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
976 | hisi_sas_port_notify_formed(sas_phy); | |
977 | } else { | |
978 | struct hisi_sas_port *port = phy->port; | |
979 | ||
980 | /* Phy down and not ready */ | |
981 | sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); | |
982 | sas_phy_disconnected(sas_phy); | |
983 | ||
984 | if (port) { | |
985 | if (phy->phy_type & PORT_TYPE_SAS) { | |
986 | int port_id = port->id; | |
987 | ||
988 | if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, | |
989 | port_id)) | |
990 | port->port_attached = 0; | |
991 | } else if (phy->phy_type & PORT_TYPE_SATA) | |
992 | port->port_attached = 0; | |
993 | } | |
994 | hisi_sas_phy_disconnected(phy); | |
995 | } | |
996 | } | |
997 | EXPORT_SYMBOL_GPL(hisi_sas_phy_down); | |
998 | ||
e8899fad JG |
999 | static struct scsi_transport_template *hisi_sas_stt; |
1000 | ||
7eb7869f JG |
1001 | static struct scsi_host_template hisi_sas_sht = { |
1002 | .module = THIS_MODULE, | |
1003 | .name = DRV_NAME, | |
1004 | .queuecommand = sas_queuecommand, | |
1005 | .target_alloc = sas_target_alloc, | |
31eec8a6 | 1006 | .slave_configure = hisi_sas_slave_configure, |
701f75ec JG |
1007 | .scan_finished = hisi_sas_scan_finished, |
1008 | .scan_start = hisi_sas_scan_start, | |
7eb7869f JG |
1009 | .change_queue_depth = sas_change_queue_depth, |
1010 | .bios_param = sas_bios_param, | |
1011 | .can_queue = 1, | |
1012 | .this_id = -1, | |
1013 | .sg_tablesize = SG_ALL, | |
1014 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, | |
1015 | .use_clustering = ENABLE_CLUSTERING, | |
1016 | .eh_device_reset_handler = sas_eh_device_reset_handler, | |
1017 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, | |
1018 | .target_destroy = sas_target_destroy, | |
1019 | .ioctl = sas_ioctl, | |
1020 | }; | |
1021 | ||
e8899fad | 1022 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
abda97c2 JG |
1023 | .lldd_dev_found = hisi_sas_dev_found, |
1024 | .lldd_dev_gone = hisi_sas_dev_gone, | |
42e7a693 | 1025 | .lldd_execute_task = hisi_sas_queue_command, |
e4189d53 | 1026 | .lldd_control_phy = hisi_sas_control_phy, |
0efff300 JG |
1027 | .lldd_abort_task = hisi_sas_abort_task, |
1028 | .lldd_abort_task_set = hisi_sas_abort_task_set, | |
1029 | .lldd_clear_aca = hisi_sas_clear_aca, | |
1030 | .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, | |
1031 | .lldd_lu_reset = hisi_sas_lu_reset, | |
1032 | .lldd_query_task = hisi_sas_query_task, | |
184a4635 JG |
1033 | .lldd_port_formed = hisi_sas_port_formed, |
1034 | .lldd_port_deformed = hisi_sas_port_deformed, | |
e8899fad JG |
1035 | }; |
1036 | ||
6be6de18 JG |
1037 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
1038 | { | |
6be6de18 JG |
1039 | struct platform_device *pdev = hisi_hba->pdev; |
1040 | struct device *dev = &pdev->dev; | |
a8d547bd | 1041 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
6be6de18 | 1042 | |
fa42d80d | 1043 | spin_lock_init(&hisi_hba->lock); |
976867e6 JG |
1044 | for (i = 0; i < hisi_hba->n_phy; i++) { |
1045 | hisi_sas_phy_init(hisi_hba, i); | |
1046 | hisi_hba->port[i].port_attached = 0; | |
1047 | hisi_hba->port[i].id = -1; | |
1048 | INIT_LIST_HEAD(&hisi_hba->port[i].list); | |
1049 | } | |
1050 | ||
af740dbe JG |
1051 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
1052 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; | |
1053 | hisi_hba->devices[i].device_id = i; | |
1054 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; | |
1055 | } | |
1056 | ||
6be6de18 | 1057 | for (i = 0; i < hisi_hba->queue_count; i++) { |
9101a079 JG |
1058 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
1059 | ||
1060 | /* Completion queue structure */ | |
1061 | cq->id = i; | |
1062 | cq->hisi_hba = hisi_hba; | |
1063 | ||
6be6de18 JG |
1064 | /* Delivery queue */ |
1065 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1066 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, | |
1067 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); | |
1068 | if (!hisi_hba->cmd_hdr[i]) | |
1069 | goto err_out; | |
1070 | memset(hisi_hba->cmd_hdr[i], 0, s); | |
1071 | ||
1072 | /* Completion queue */ | |
1073 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1074 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, | |
1075 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); | |
1076 | if (!hisi_hba->complete_hdr[i]) | |
1077 | goto err_out; | |
1078 | memset(hisi_hba->complete_hdr[i], 0, s); | |
1079 | } | |
1080 | ||
1081 | s = HISI_SAS_STATUS_BUF_SZ; | |
1082 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", | |
1083 | dev, s, 16, 0); | |
1084 | if (!hisi_hba->status_buffer_pool) | |
1085 | goto err_out; | |
1086 | ||
1087 | s = HISI_SAS_COMMAND_TABLE_SZ; | |
1088 | hisi_hba->command_table_pool = dma_pool_create("command_table", | |
1089 | dev, s, 16, 0); | |
1090 | if (!hisi_hba->command_table_pool) | |
1091 | goto err_out; | |
1092 | ||
1093 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1094 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, | |
1095 | GFP_KERNEL); | |
1096 | if (!hisi_hba->itct) | |
1097 | goto err_out; | |
1098 | ||
1099 | memset(hisi_hba->itct, 0, s); | |
1100 | ||
a8d547bd | 1101 | hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, |
6be6de18 JG |
1102 | sizeof(struct hisi_sas_slot), |
1103 | GFP_KERNEL); | |
1104 | if (!hisi_hba->slot_info) | |
1105 | goto err_out; | |
1106 | ||
a8d547bd | 1107 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
6be6de18 JG |
1108 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
1109 | GFP_KERNEL); | |
1110 | if (!hisi_hba->iost) | |
1111 | goto err_out; | |
1112 | ||
1113 | memset(hisi_hba->iost, 0, s); | |
1114 | ||
a8d547bd | 1115 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
6be6de18 JG |
1116 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
1117 | &hisi_hba->breakpoint_dma, GFP_KERNEL); | |
1118 | if (!hisi_hba->breakpoint) | |
1119 | goto err_out; | |
1120 | ||
1121 | memset(hisi_hba->breakpoint, 0, s); | |
1122 | ||
a8d547bd | 1123 | hisi_hba->slot_index_count = max_command_entries; |
257efd1f JG |
1124 | s = hisi_hba->slot_index_count / sizeof(unsigned long); |
1125 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); | |
1126 | if (!hisi_hba->slot_index_tags) | |
1127 | goto err_out; | |
1128 | ||
6be6de18 JG |
1129 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
1130 | sizeof(struct hisi_sas_sge_page), 16, 0); | |
1131 | if (!hisi_hba->sge_page_pool) | |
1132 | goto err_out; | |
1133 | ||
1134 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1135 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, | |
1136 | &hisi_hba->initial_fis_dma, GFP_KERNEL); | |
1137 | if (!hisi_hba->initial_fis) | |
1138 | goto err_out; | |
1139 | memset(hisi_hba->initial_fis, 0, s); | |
1140 | ||
a8d547bd | 1141 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
6be6de18 JG |
1142 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
1143 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); | |
1144 | if (!hisi_hba->sata_breakpoint) | |
1145 | goto err_out; | |
1146 | memset(hisi_hba->sata_breakpoint, 0, s); | |
1147 | ||
257efd1f JG |
1148 | hisi_sas_slot_index_init(hisi_hba); |
1149 | ||
7e9080e1 JG |
1150 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
1151 | if (!hisi_hba->wq) { | |
1152 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); | |
1153 | goto err_out; | |
1154 | } | |
1155 | ||
6be6de18 JG |
1156 | return 0; |
1157 | err_out: | |
1158 | return -ENOMEM; | |
1159 | } | |
1160 | ||
89d53322 JG |
1161 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
1162 | { | |
1163 | struct device *dev = &hisi_hba->pdev->dev; | |
a8d547bd | 1164 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
89d53322 JG |
1165 | |
1166 | for (i = 0; i < hisi_hba->queue_count; i++) { | |
1167 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1168 | if (hisi_hba->cmd_hdr[i]) | |
1169 | dma_free_coherent(dev, s, | |
1170 | hisi_hba->cmd_hdr[i], | |
1171 | hisi_hba->cmd_hdr_dma[i]); | |
1172 | ||
1173 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1174 | if (hisi_hba->complete_hdr[i]) | |
1175 | dma_free_coherent(dev, s, | |
1176 | hisi_hba->complete_hdr[i], | |
1177 | hisi_hba->complete_hdr_dma[i]); | |
1178 | } | |
1179 | ||
1180 | dma_pool_destroy(hisi_hba->status_buffer_pool); | |
1181 | dma_pool_destroy(hisi_hba->command_table_pool); | |
1182 | dma_pool_destroy(hisi_hba->sge_page_pool); | |
1183 | ||
1184 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1185 | if (hisi_hba->itct) | |
1186 | dma_free_coherent(dev, s, | |
1187 | hisi_hba->itct, hisi_hba->itct_dma); | |
1188 | ||
a8d547bd | 1189 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
89d53322 JG |
1190 | if (hisi_hba->iost) |
1191 | dma_free_coherent(dev, s, | |
1192 | hisi_hba->iost, hisi_hba->iost_dma); | |
1193 | ||
a8d547bd | 1194 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
89d53322 JG |
1195 | if (hisi_hba->breakpoint) |
1196 | dma_free_coherent(dev, s, | |
1197 | hisi_hba->breakpoint, | |
1198 | hisi_hba->breakpoint_dma); | |
1199 | ||
1200 | ||
1201 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1202 | if (hisi_hba->initial_fis) | |
1203 | dma_free_coherent(dev, s, | |
1204 | hisi_hba->initial_fis, | |
1205 | hisi_hba->initial_fis_dma); | |
1206 | ||
a8d547bd | 1207 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
89d53322 JG |
1208 | if (hisi_hba->sata_breakpoint) |
1209 | dma_free_coherent(dev, s, | |
1210 | hisi_hba->sata_breakpoint, | |
1211 | hisi_hba->sata_breakpoint_dma); | |
1212 | ||
7e9080e1 JG |
1213 | if (hisi_hba->wq) |
1214 | destroy_workqueue(hisi_hba->wq); | |
89d53322 | 1215 | } |
6be6de18 | 1216 | |
7eb7869f JG |
1217 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
1218 | const struct hisi_sas_hw *hw) | |
1219 | { | |
e26b2f40 | 1220 | struct resource *res; |
7eb7869f JG |
1221 | struct Scsi_Host *shost; |
1222 | struct hisi_hba *hisi_hba; | |
1223 | struct device *dev = &pdev->dev; | |
e26b2f40 | 1224 | struct device_node *np = pdev->dev.of_node; |
7eb7869f JG |
1225 | |
1226 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); | |
1227 | if (!shost) | |
1228 | goto err_out; | |
1229 | hisi_hba = shost_priv(shost); | |
1230 | ||
1231 | hisi_hba->hw = hw; | |
1232 | hisi_hba->pdev = pdev; | |
1233 | hisi_hba->shost = shost; | |
1234 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; | |
1235 | ||
fa42d80d JG |
1236 | init_timer(&hisi_hba->timer); |
1237 | ||
4d558c77 JG |
1238 | if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, |
1239 | SAS_ADDR_SIZE)) | |
e26b2f40 | 1240 | goto err_out; |
e26b2f40 | 1241 | |
4d558c77 JG |
1242 | if (np) { |
1243 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, | |
1244 | "hisilicon,sas-syscon"); | |
1245 | if (IS_ERR(hisi_hba->ctrl)) | |
1246 | goto err_out; | |
e26b2f40 | 1247 | |
4d558c77 JG |
1248 | if (device_property_read_u32(dev, "ctrl-reset-reg", |
1249 | &hisi_hba->ctrl_reset_reg)) | |
1250 | goto err_out; | |
e26b2f40 | 1251 | |
4d558c77 JG |
1252 | if (device_property_read_u32(dev, "ctrl-reset-sts-reg", |
1253 | &hisi_hba->ctrl_reset_sts_reg)) | |
1254 | goto err_out; | |
e26b2f40 | 1255 | |
4d558c77 JG |
1256 | if (device_property_read_u32(dev, "ctrl-clock-ena-reg", |
1257 | &hisi_hba->ctrl_clock_ena_reg)) | |
1258 | goto err_out; | |
1259 | } | |
1260 | ||
1261 | if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) | |
e26b2f40 JG |
1262 | goto err_out; |
1263 | ||
4d558c77 JG |
1264 | if (device_property_read_u32(dev, "queue-count", |
1265 | &hisi_hba->queue_count)) | |
e26b2f40 JG |
1266 | goto err_out; |
1267 | ||
e26b2f40 JG |
1268 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1269 | hisi_hba->regs = devm_ioremap_resource(dev, res); | |
1270 | if (IS_ERR(hisi_hba->regs)) | |
1271 | goto err_out; | |
1272 | ||
89d53322 JG |
1273 | if (hisi_sas_alloc(hisi_hba, shost)) { |
1274 | hisi_sas_free(hisi_hba); | |
6be6de18 | 1275 | goto err_out; |
89d53322 | 1276 | } |
6be6de18 | 1277 | |
7eb7869f JG |
1278 | return shost; |
1279 | err_out: | |
1280 | dev_err(dev, "shost alloc failed\n"); | |
1281 | return NULL; | |
1282 | } | |
1283 | ||
5d74242e JG |
1284 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
1285 | { | |
1286 | int i; | |
1287 | ||
1288 | for (i = 0; i < hisi_hba->n_phy; i++) | |
1289 | memcpy(&hisi_hba->phy[i].dev_sas_addr, | |
1290 | hisi_hba->sas_addr, | |
1291 | SAS_ADDR_SIZE); | |
1292 | } | |
1293 | ||
7eb7869f JG |
1294 | int hisi_sas_probe(struct platform_device *pdev, |
1295 | const struct hisi_sas_hw *hw) | |
1296 | { | |
1297 | struct Scsi_Host *shost; | |
1298 | struct hisi_hba *hisi_hba; | |
1299 | struct device *dev = &pdev->dev; | |
1300 | struct asd_sas_phy **arr_phy; | |
1301 | struct asd_sas_port **arr_port; | |
1302 | struct sas_ha_struct *sha; | |
1303 | int rc, phy_nr, port_nr, i; | |
1304 | ||
1305 | shost = hisi_sas_shost_alloc(pdev, hw); | |
1306 | if (!shost) { | |
1307 | rc = -ENOMEM; | |
1308 | goto err_out_ha; | |
1309 | } | |
1310 | ||
1311 | sha = SHOST_TO_SAS_HA(shost); | |
1312 | hisi_hba = shost_priv(shost); | |
1313 | platform_set_drvdata(pdev, sha); | |
50cb916f JG |
1314 | |
1315 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && | |
1316 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { | |
1317 | dev_err(dev, "No usable DMA addressing method\n"); | |
1318 | rc = -EIO; | |
1319 | goto err_out_ha; | |
1320 | } | |
1321 | ||
7eb7869f JG |
1322 | phy_nr = port_nr = hisi_hba->n_phy; |
1323 | ||
1324 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); | |
1325 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); | |
1326 | if (!arr_phy || !arr_port) | |
1327 | return -ENOMEM; | |
1328 | ||
1329 | sha->sas_phy = arr_phy; | |
1330 | sha->sas_port = arr_port; | |
1331 | sha->core.shost = shost; | |
1332 | sha->lldd_ha = hisi_hba; | |
1333 | ||
1334 | shost->transportt = hisi_sas_stt; | |
1335 | shost->max_id = HISI_SAS_MAX_DEVICES; | |
1336 | shost->max_lun = ~0; | |
1337 | shost->max_channel = 1; | |
1338 | shost->max_cmd_len = 16; | |
1339 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); | |
a8d547bd JG |
1340 | shost->can_queue = hisi_hba->hw->max_command_entries; |
1341 | shost->cmd_per_lun = hisi_hba->hw->max_command_entries; | |
7eb7869f JG |
1342 | |
1343 | sha->sas_ha_name = DRV_NAME; | |
1344 | sha->dev = &hisi_hba->pdev->dev; | |
1345 | sha->lldd_module = THIS_MODULE; | |
1346 | sha->sas_addr = &hisi_hba->sas_addr[0]; | |
1347 | sha->num_phys = hisi_hba->n_phy; | |
1348 | sha->core.shost = hisi_hba->shost; | |
1349 | ||
1350 | for (i = 0; i < hisi_hba->n_phy; i++) { | |
1351 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; | |
1352 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; | |
1353 | } | |
1354 | ||
5d74242e JG |
1355 | hisi_sas_init_add(hisi_hba); |
1356 | ||
8ff1d571 JG |
1357 | rc = hisi_hba->hw->hw_init(hisi_hba); |
1358 | if (rc) | |
1359 | goto err_out_ha; | |
1360 | ||
7eb7869f JG |
1361 | rc = scsi_add_host(shost, &pdev->dev); |
1362 | if (rc) | |
1363 | goto err_out_ha; | |
1364 | ||
1365 | rc = sas_register_ha(sha); | |
1366 | if (rc) | |
1367 | goto err_out_register_ha; | |
1368 | ||
1369 | scsi_scan_host(shost); | |
1370 | ||
1371 | return 0; | |
1372 | ||
1373 | err_out_register_ha: | |
1374 | scsi_remove_host(shost); | |
1375 | err_out_ha: | |
1376 | kfree(shost); | |
1377 | return rc; | |
1378 | } | |
1379 | EXPORT_SYMBOL_GPL(hisi_sas_probe); | |
1380 | ||
89d53322 JG |
1381 | int hisi_sas_remove(struct platform_device *pdev) |
1382 | { | |
1383 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); | |
1384 | struct hisi_hba *hisi_hba = sha->lldd_ha; | |
1385 | ||
1386 | scsi_remove_host(sha->core.shost); | |
1387 | sas_unregister_ha(sha); | |
1388 | sas_remove_host(sha->core.shost); | |
1389 | ||
1390 | hisi_sas_free(hisi_hba); | |
1391 | return 0; | |
1392 | } | |
1393 | EXPORT_SYMBOL_GPL(hisi_sas_remove); | |
1394 | ||
e8899fad JG |
1395 | static __init int hisi_sas_init(void) |
1396 | { | |
1397 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); | |
1398 | ||
1399 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); | |
1400 | if (!hisi_sas_stt) | |
1401 | return -ENOMEM; | |
1402 | ||
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | static __exit void hisi_sas_exit(void) | |
1407 | { | |
1408 | sas_release_transport(hisi_sas_stt); | |
1409 | } | |
1410 | ||
1411 | module_init(hisi_sas_init); | |
1412 | module_exit(hisi_sas_exit); | |
1413 | ||
1414 | MODULE_VERSION(DRV_VERSION); | |
1415 | MODULE_LICENSE("GPL"); | |
1416 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); | |
1417 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); | |
1418 | MODULE_ALIAS("platform:" DRV_NAME); |