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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); | |
441c2740 JG |
20 | static int |
21 | hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, | |
22 | struct domain_device *device, | |
23 | int abort_flag, int tag); | |
cac9b2a2 | 24 | |
42e7a693 JG |
25 | static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) |
26 | { | |
27 | return device->port->ha->lldd_ha; | |
28 | } | |
29 | ||
257efd1f JG |
30 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
31 | { | |
32 | void *bitmap = hisi_hba->slot_index_tags; | |
33 | ||
34 | clear_bit(slot_idx, bitmap); | |
35 | } | |
36 | ||
42e7a693 JG |
37 | static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) |
38 | { | |
39 | hisi_sas_slot_index_clear(hisi_hba, slot_idx); | |
40 | } | |
41 | ||
42 | static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) | |
43 | { | |
44 | void *bitmap = hisi_hba->slot_index_tags; | |
45 | ||
46 | set_bit(slot_idx, bitmap); | |
47 | } | |
48 | ||
49 | static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx) | |
50 | { | |
51 | unsigned int index; | |
52 | void *bitmap = hisi_hba->slot_index_tags; | |
53 | ||
54 | index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count); | |
55 | if (index >= hisi_hba->slot_index_count) | |
56 | return -SAS_QUEUE_FULL; | |
57 | hisi_sas_slot_index_set(hisi_hba, index); | |
58 | *slot_idx = index; | |
59 | return 0; | |
60 | } | |
61 | ||
257efd1f JG |
62 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
63 | { | |
64 | int i; | |
65 | ||
66 | for (i = 0; i < hisi_hba->slot_index_count; ++i) | |
67 | hisi_sas_slot_index_clear(hisi_hba, i); | |
68 | } | |
27a3f229 JG |
69 | |
70 | void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, | |
71 | struct hisi_sas_slot *slot) | |
72 | { | |
73 | struct device *dev = &hisi_hba->pdev->dev; | |
74 | ||
75 | if (!slot->task) | |
76 | return; | |
77 | ||
78 | if (!sas_protocol_ata(task->task_proto)) | |
79 | if (slot->n_elem) | |
80 | dma_unmap_sg(dev, task->scatter, slot->n_elem, | |
81 | task->data_dir); | |
82 | ||
83 | if (slot->command_table) | |
84 | dma_pool_free(hisi_hba->command_table_pool, | |
85 | slot->command_table, slot->command_table_dma); | |
86 | ||
87 | if (slot->status_buffer) | |
88 | dma_pool_free(hisi_hba->status_buffer_pool, | |
89 | slot->status_buffer, slot->status_buffer_dma); | |
90 | ||
91 | if (slot->sge_page) | |
92 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
93 | slot->sge_page_dma); | |
94 | ||
95 | list_del_init(&slot->entry); | |
96 | task->lldd_task = NULL; | |
97 | slot->task = NULL; | |
98 | slot->port = NULL; | |
99 | hisi_sas_slot_index_free(hisi_hba, slot->idx); | |
59ba49f9 | 100 | /* slot memory is fully zeroed when it is reused */ |
27a3f229 JG |
101 | } |
102 | EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); | |
103 | ||
66ee999b JG |
104 | static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, |
105 | struct hisi_sas_slot *slot) | |
106 | { | |
107 | return hisi_hba->hw->prep_smp(hisi_hba, slot); | |
108 | } | |
109 | ||
42e7a693 JG |
110 | static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, |
111 | struct hisi_sas_slot *slot, int is_tmf, | |
112 | struct hisi_sas_tmf_task *tmf) | |
113 | { | |
114 | return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
115 | } | |
116 | ||
6f2ff1a1 JG |
117 | static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, |
118 | struct hisi_sas_slot *slot) | |
119 | { | |
120 | return hisi_hba->hw->prep_stp(hisi_hba, slot); | |
121 | } | |
122 | ||
441c2740 JG |
123 | static int hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba, |
124 | struct hisi_sas_slot *slot, | |
125 | int device_id, int abort_flag, int tag_to_abort) | |
126 | { | |
127 | return hisi_hba->hw->prep_abort(hisi_hba, slot, | |
128 | device_id, abort_flag, tag_to_abort); | |
129 | } | |
130 | ||
cac9b2a2 JG |
131 | /* |
132 | * This function will issue an abort TMF regardless of whether the | |
133 | * task is in the sdev or not. Then it will do the task complete | |
134 | * cleanup and callbacks. | |
135 | */ | |
136 | static void hisi_sas_slot_abort(struct work_struct *work) | |
137 | { | |
138 | struct hisi_sas_slot *abort_slot = | |
139 | container_of(work, struct hisi_sas_slot, abort_slot); | |
140 | struct sas_task *task = abort_slot->task; | |
141 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
142 | struct scsi_cmnd *cmnd = task->uldd_task; | |
143 | struct hisi_sas_tmf_task tmf_task; | |
144 | struct domain_device *device = task->dev; | |
145 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
146 | struct scsi_lun lun; | |
147 | struct device *dev = &hisi_hba->pdev->dev; | |
148 | int tag = abort_slot->idx; | |
da7b66e7 | 149 | unsigned long flags; |
cac9b2a2 JG |
150 | |
151 | if (!(task->task_proto & SAS_PROTOCOL_SSP)) { | |
152 | dev_err(dev, "cannot abort slot for non-ssp task\n"); | |
153 | goto out; | |
154 | } | |
155 | ||
156 | int_to_scsilun(cmnd->device->lun, &lun); | |
157 | tmf_task.tmf = TMF_ABORT_TASK; | |
158 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
159 | ||
160 | hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task); | |
161 | out: | |
162 | /* Do cleanup for this task */ | |
da7b66e7 | 163 | spin_lock_irqsave(&hisi_hba->lock, flags); |
cac9b2a2 | 164 | hisi_sas_slot_task_free(hisi_hba, task, abort_slot); |
da7b66e7 | 165 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
cac9b2a2 JG |
166 | if (task->task_done) |
167 | task->task_done(task); | |
f696cc32 JG |
168 | if (sas_dev) |
169 | atomic64_dec(&sas_dev->running_req); | |
cac9b2a2 JG |
170 | } |
171 | ||
42e7a693 JG |
172 | static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba, |
173 | int is_tmf, struct hisi_sas_tmf_task *tmf, | |
174 | int *pass) | |
175 | { | |
176 | struct domain_device *device = task->dev; | |
177 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
178 | struct hisi_sas_port *port; | |
179 | struct hisi_sas_slot *slot; | |
180 | struct hisi_sas_cmd_hdr *cmd_hdr_base; | |
181 | struct device *dev = &hisi_hba->pdev->dev; | |
182 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; | |
183 | ||
184 | if (!device->port) { | |
185 | struct task_status_struct *ts = &task->task_status; | |
186 | ||
187 | ts->resp = SAS_TASK_UNDELIVERED; | |
188 | ts->stat = SAS_PHY_DOWN; | |
189 | /* | |
190 | * libsas will use dev->port, should | |
191 | * not call task_done for sata | |
192 | */ | |
193 | if (device->dev_type != SAS_SATA_DEV) | |
194 | task->task_done(task); | |
195 | return 0; | |
196 | } | |
197 | ||
198 | if (DEV_IS_GONE(sas_dev)) { | |
199 | if (sas_dev) | |
200 | dev_info(dev, "task prep: device %llu not ready\n", | |
201 | sas_dev->device_id); | |
202 | else | |
203 | dev_info(dev, "task prep: device %016llx not ready\n", | |
204 | SAS_ADDR(device->sas_addr)); | |
205 | ||
206 | rc = SAS_PHY_DOWN; | |
207 | return rc; | |
208 | } | |
209 | port = device->port->lldd_port; | |
9859f24e | 210 | if (port && !port->port_attached) { |
09fe9ecb JG |
211 | dev_info(dev, "task prep: %s port%d not attach device\n", |
212 | (sas_protocol_ata(task->task_proto)) ? | |
213 | "SATA/STP" : "SAS", | |
214 | device->port->id); | |
215 | ||
216 | return SAS_PHY_DOWN; | |
42e7a693 JG |
217 | } |
218 | ||
219 | if (!sas_protocol_ata(task->task_proto)) { | |
220 | if (task->num_scatter) { | |
221 | n_elem = dma_map_sg(dev, task->scatter, | |
222 | task->num_scatter, task->data_dir); | |
223 | if (!n_elem) { | |
224 | rc = -ENOMEM; | |
225 | goto prep_out; | |
226 | } | |
227 | } | |
228 | } else | |
229 | n_elem = task->num_scatter; | |
230 | ||
685b6d6e JG |
231 | if (hisi_hba->hw->slot_index_alloc) |
232 | rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx, | |
233 | device); | |
234 | else | |
235 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); | |
42e7a693 JG |
236 | if (rc) |
237 | goto err_out; | |
c70f1fb7 XC |
238 | rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id, |
239 | &dlvry_queue, &dlvry_queue_slot); | |
42e7a693 JG |
240 | if (rc) |
241 | goto err_out_tag; | |
242 | ||
243 | slot = &hisi_hba->slot_info[slot_idx]; | |
244 | memset(slot, 0, sizeof(struct hisi_sas_slot)); | |
245 | ||
246 | slot->idx = slot_idx; | |
247 | slot->n_elem = n_elem; | |
248 | slot->dlvry_queue = dlvry_queue; | |
249 | slot->dlvry_queue_slot = dlvry_queue_slot; | |
250 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; | |
251 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; | |
252 | slot->task = task; | |
253 | slot->port = port; | |
254 | task->lldd_task = slot; | |
cac9b2a2 | 255 | INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort); |
42e7a693 JG |
256 | |
257 | slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool, | |
258 | GFP_ATOMIC, | |
259 | &slot->status_buffer_dma); | |
9c9d18e7 DC |
260 | if (!slot->status_buffer) { |
261 | rc = -ENOMEM; | |
42e7a693 | 262 | goto err_out_slot_buf; |
9c9d18e7 | 263 | } |
42e7a693 JG |
264 | memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ); |
265 | ||
266 | slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool, | |
267 | GFP_ATOMIC, | |
268 | &slot->command_table_dma); | |
9c9d18e7 DC |
269 | if (!slot->command_table) { |
270 | rc = -ENOMEM; | |
42e7a693 | 271 | goto err_out_status_buf; |
9c9d18e7 | 272 | } |
42e7a693 JG |
273 | memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ); |
274 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); | |
275 | ||
276 | switch (task->task_proto) { | |
66ee999b JG |
277 | case SAS_PROTOCOL_SMP: |
278 | rc = hisi_sas_task_prep_smp(hisi_hba, slot); | |
279 | break; | |
42e7a693 JG |
280 | case SAS_PROTOCOL_SSP: |
281 | rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
282 | break; | |
283 | case SAS_PROTOCOL_SATA: | |
284 | case SAS_PROTOCOL_STP: | |
285 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: | |
6f2ff1a1 JG |
286 | rc = hisi_sas_task_prep_ata(hisi_hba, slot); |
287 | break; | |
42e7a693 JG |
288 | default: |
289 | dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", | |
290 | task->task_proto); | |
291 | rc = -EINVAL; | |
292 | break; | |
293 | } | |
294 | ||
295 | if (rc) { | |
296 | dev_err(dev, "task prep: rc = 0x%x\n", rc); | |
297 | if (slot->sge_page) | |
298 | goto err_out_sge; | |
299 | goto err_out_command_table; | |
300 | } | |
301 | ||
302 | list_add_tail(&slot->entry, &port->list); | |
303 | spin_lock(&task->task_state_lock); | |
304 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
305 | spin_unlock(&task->task_state_lock); | |
306 | ||
307 | hisi_hba->slot_prep = slot; | |
308 | ||
f696cc32 | 309 | atomic64_inc(&sas_dev->running_req); |
42e7a693 JG |
310 | ++(*pass); |
311 | ||
9c9d18e7 | 312 | return 0; |
42e7a693 JG |
313 | |
314 | err_out_sge: | |
315 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
316 | slot->sge_page_dma); | |
317 | err_out_command_table: | |
318 | dma_pool_free(hisi_hba->command_table_pool, slot->command_table, | |
319 | slot->command_table_dma); | |
320 | err_out_status_buf: | |
321 | dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer, | |
322 | slot->status_buffer_dma); | |
323 | err_out_slot_buf: | |
324 | /* Nothing to be done */ | |
325 | err_out_tag: | |
326 | hisi_sas_slot_index_free(hisi_hba, slot_idx); | |
327 | err_out: | |
328 | dev_err(dev, "task prep: failed[%d]!\n", rc); | |
329 | if (!sas_protocol_ata(task->task_proto)) | |
330 | if (n_elem) | |
331 | dma_unmap_sg(dev, task->scatter, n_elem, | |
332 | task->data_dir); | |
333 | prep_out: | |
334 | return rc; | |
335 | } | |
336 | ||
337 | static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, | |
338 | int is_tmf, struct hisi_sas_tmf_task *tmf) | |
339 | { | |
340 | u32 rc; | |
341 | u32 pass = 0; | |
342 | unsigned long flags; | |
343 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
344 | struct device *dev = &hisi_hba->pdev->dev; | |
345 | ||
346 | /* protect task_prep and start_delivery sequence */ | |
347 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
348 | rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass); | |
349 | if (rc) | |
350 | dev_err(dev, "task exec: failed[%d]!\n", rc); | |
351 | ||
352 | if (likely(pass)) | |
353 | hisi_hba->hw->start_delivery(hisi_hba); | |
354 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
355 | ||
356 | return rc; | |
357 | } | |
257efd1f | 358 | |
66139921 JG |
359 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
360 | { | |
361 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
362 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
363 | struct sas_ha_struct *sas_ha; | |
364 | ||
365 | if (!phy->phy_attached) | |
366 | return; | |
367 | ||
368 | sas_ha = &hisi_hba->sha; | |
369 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); | |
370 | ||
371 | if (sas_phy->phy) { | |
372 | struct sas_phy *sphy = sas_phy->phy; | |
373 | ||
374 | sphy->negotiated_linkrate = sas_phy->linkrate; | |
66139921 | 375 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; |
2ae75787 XC |
376 | sphy->maximum_linkrate_hw = |
377 | hisi_hba->hw->phy_get_max_linkrate(); | |
378 | if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) | |
379 | sphy->minimum_linkrate = phy->minimum_linkrate; | |
380 | ||
381 | if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) | |
382 | sphy->maximum_linkrate = phy->maximum_linkrate; | |
66139921 JG |
383 | } |
384 | ||
385 | if (phy->phy_type & PORT_TYPE_SAS) { | |
386 | struct sas_identify_frame *id; | |
387 | ||
388 | id = (struct sas_identify_frame *)phy->frame_rcvd; | |
389 | id->dev_type = phy->identify.device_type; | |
390 | id->initiator_bits = SAS_PROTOCOL_ALL; | |
391 | id->target_bits = phy->identify.target_port_protocols; | |
392 | } else if (phy->phy_type & PORT_TYPE_SATA) { | |
393 | /*Nothing*/ | |
394 | } | |
395 | ||
396 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; | |
397 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); | |
398 | } | |
399 | ||
abda97c2 JG |
400 | static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) |
401 | { | |
402 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
403 | struct hisi_sas_device *sas_dev = NULL; | |
404 | int i; | |
405 | ||
406 | spin_lock(&hisi_hba->lock); | |
407 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { | |
408 | if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { | |
409 | hisi_hba->devices[i].device_id = i; | |
410 | sas_dev = &hisi_hba->devices[i]; | |
411 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
412 | sas_dev->dev_type = device->dev_type; | |
413 | sas_dev->hisi_hba = hisi_hba; | |
414 | sas_dev->sas_device = device; | |
415 | break; | |
416 | } | |
417 | } | |
418 | spin_unlock(&hisi_hba->lock); | |
419 | ||
420 | return sas_dev; | |
421 | } | |
422 | ||
423 | static int hisi_sas_dev_found(struct domain_device *device) | |
424 | { | |
425 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
426 | struct domain_device *parent_dev = device->parent; | |
427 | struct hisi_sas_device *sas_dev; | |
428 | struct device *dev = &hisi_hba->pdev->dev; | |
429 | ||
685b6d6e JG |
430 | if (hisi_hba->hw->alloc_dev) |
431 | sas_dev = hisi_hba->hw->alloc_dev(device); | |
432 | else | |
433 | sas_dev = hisi_sas_alloc_dev(device); | |
abda97c2 JG |
434 | if (!sas_dev) { |
435 | dev_err(dev, "fail alloc dev: max support %d devices\n", | |
436 | HISI_SAS_MAX_DEVICES); | |
437 | return -EINVAL; | |
438 | } | |
439 | ||
440 | device->lldd_dev = sas_dev; | |
441 | hisi_hba->hw->setup_itct(hisi_hba, sas_dev); | |
442 | ||
443 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { | |
444 | int phy_no; | |
445 | u8 phy_num = parent_dev->ex_dev.num_phys; | |
446 | struct ex_phy *phy; | |
447 | ||
448 | for (phy_no = 0; phy_no < phy_num; phy_no++) { | |
449 | phy = &parent_dev->ex_dev.ex_phy[phy_no]; | |
450 | if (SAS_ADDR(phy->attached_sas_addr) == | |
451 | SAS_ADDR(device->sas_addr)) { | |
452 | sas_dev->attached_phy = phy_no; | |
453 | break; | |
454 | } | |
455 | } | |
456 | ||
457 | if (phy_no == phy_num) { | |
458 | dev_info(dev, "dev found: no attached " | |
459 | "dev:%016llx at ex:%016llx\n", | |
460 | SAS_ADDR(device->sas_addr), | |
461 | SAS_ADDR(parent_dev->sas_addr)); | |
462 | return -EINVAL; | |
463 | } | |
464 | } | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
31eec8a6 JG |
469 | static int hisi_sas_slave_configure(struct scsi_device *sdev) |
470 | { | |
471 | struct domain_device *dev = sdev_to_domain_dev(sdev); | |
472 | int ret = sas_slave_configure(sdev); | |
473 | ||
474 | if (ret) | |
475 | return ret; | |
476 | if (!dev_is_sata(dev)) | |
477 | sas_change_queue_depth(sdev, 64); | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
701f75ec JG |
482 | static void hisi_sas_scan_start(struct Scsi_Host *shost) |
483 | { | |
484 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
485 | int i; | |
486 | ||
487 | for (i = 0; i < hisi_hba->n_phy; ++i) | |
488 | hisi_sas_bytes_dmaed(hisi_hba, i); | |
489 | ||
490 | hisi_hba->scan_finished = 1; | |
491 | } | |
492 | ||
493 | static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
494 | { | |
495 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
496 | struct sas_ha_struct *sha = &hisi_hba->sha; | |
497 | ||
498 | if (hisi_hba->scan_finished == 0) | |
499 | return 0; | |
500 | ||
501 | sas_drain_work(sha); | |
502 | return 1; | |
503 | } | |
504 | ||
66139921 JG |
505 | static void hisi_sas_phyup_work(struct work_struct *work) |
506 | { | |
507 | struct hisi_sas_phy *phy = | |
508 | container_of(work, struct hisi_sas_phy, phyup_ws); | |
509 | struct hisi_hba *hisi_hba = phy->hisi_hba; | |
510 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
511 | int phy_no = sas_phy->id; | |
512 | ||
513 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ | |
514 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
515 | } | |
976867e6 JG |
516 | |
517 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) | |
518 | { | |
519 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
520 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
521 | ||
522 | phy->hisi_hba = hisi_hba; | |
523 | phy->port = NULL; | |
524 | init_timer(&phy->timer); | |
525 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; | |
526 | sas_phy->class = SAS; | |
527 | sas_phy->iproto = SAS_PROTOCOL_ALL; | |
528 | sas_phy->tproto = 0; | |
529 | sas_phy->type = PHY_TYPE_PHYSICAL; | |
530 | sas_phy->role = PHY_ROLE_INITIATOR; | |
531 | sas_phy->oob_mode = OOB_NOT_CONNECTED; | |
532 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; | |
533 | sas_phy->id = phy_no; | |
534 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; | |
535 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; | |
536 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; | |
537 | sas_phy->lldd_phy = phy; | |
66139921 JG |
538 | |
539 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); | |
976867e6 JG |
540 | } |
541 | ||
184a4635 JG |
542 | static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) |
543 | { | |
544 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
545 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
546 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
547 | struct asd_sas_port *sas_port = sas_phy->port; | |
1d7e9469 | 548 | struct hisi_sas_port *port = &hisi_hba->port[phy->port_id]; |
184a4635 JG |
549 | unsigned long flags; |
550 | ||
551 | if (!sas_port) | |
552 | return; | |
553 | ||
554 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
555 | port->port_attached = 1; | |
556 | port->id = phy->port_id; | |
557 | phy->port = port; | |
558 | sas_port->lldd_port = port; | |
559 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
560 | } | |
561 | ||
562 | static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no, | |
563 | struct domain_device *device) | |
564 | { | |
565 | struct hisi_sas_phy *phy; | |
566 | struct hisi_sas_port *port; | |
567 | struct hisi_sas_slot *slot, *slot2; | |
568 | struct device *dev = &hisi_hba->pdev->dev; | |
569 | ||
570 | phy = &hisi_hba->phy[phy_no]; | |
571 | port = phy->port; | |
572 | if (!port) | |
573 | return; | |
574 | ||
575 | list_for_each_entry_safe(slot, slot2, &port->list, entry) { | |
576 | struct sas_task *task; | |
577 | ||
578 | task = slot->task; | |
579 | if (device && task->dev != device) | |
580 | continue; | |
581 | ||
582 | dev_info(dev, "Release slot [%d:%d], task [%p]:\n", | |
583 | slot->dlvry_queue, slot->dlvry_queue_slot, task); | |
584 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
585 | } | |
586 | } | |
587 | ||
588 | static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy) | |
589 | { | |
590 | struct domain_device *device; | |
591 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
592 | struct asd_sas_port *sas_port = sas_phy->port; | |
593 | ||
594 | list_for_each_entry(device, &sas_port->dev_list, dev_list_node) | |
595 | hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device); | |
596 | } | |
597 | ||
598 | static void hisi_sas_release_task(struct hisi_hba *hisi_hba, | |
599 | struct domain_device *device) | |
600 | { | |
601 | struct asd_sas_port *port = device->port; | |
602 | struct asd_sas_phy *sas_phy; | |
603 | ||
604 | list_for_each_entry(sas_phy, &port->phy_list, port_phy_el) | |
605 | hisi_sas_do_release_task(hisi_hba, sas_phy->id, device); | |
606 | } | |
607 | ||
abda97c2 JG |
608 | static void hisi_sas_dev_gone(struct domain_device *device) |
609 | { | |
610 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
611 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
612 | struct device *dev = &hisi_hba->pdev->dev; | |
613 | u64 dev_id = sas_dev->device_id; | |
614 | ||
615 | dev_info(dev, "found dev[%lld:%x] is gone\n", | |
616 | sas_dev->device_id, sas_dev->dev_type); | |
617 | ||
40f2702b JG |
618 | hisi_sas_internal_task_abort(hisi_hba, device, |
619 | HISI_SAS_INT_ABT_DEV, 0); | |
620 | ||
abda97c2 JG |
621 | hisi_hba->hw->free_device(hisi_hba, sas_dev); |
622 | device->lldd_dev = NULL; | |
623 | memset(sas_dev, 0, sizeof(*sas_dev)); | |
624 | sas_dev->device_id = dev_id; | |
625 | sas_dev->dev_type = SAS_PHY_UNUSED; | |
626 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
627 | } | |
42e7a693 JG |
628 | |
629 | static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) | |
630 | { | |
631 | return hisi_sas_task_exec(task, gfp_flags, 0, NULL); | |
632 | } | |
633 | ||
e4189d53 JG |
634 | static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, |
635 | void *funcdata) | |
636 | { | |
637 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
638 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
639 | int phy_no = sas_phy->id; | |
640 | ||
641 | switch (func) { | |
642 | case PHY_FUNC_HARD_RESET: | |
643 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
644 | break; | |
645 | ||
646 | case PHY_FUNC_LINK_RESET: | |
647 | hisi_hba->hw->phy_enable(hisi_hba, phy_no); | |
648 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
649 | break; | |
650 | ||
651 | case PHY_FUNC_DISABLE: | |
652 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); | |
653 | break; | |
654 | ||
655 | case PHY_FUNC_SET_LINK_RATE: | |
2ae75787 XC |
656 | hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata); |
657 | break; | |
658 | ||
e4189d53 JG |
659 | case PHY_FUNC_RELEASE_SPINUP_HOLD: |
660 | default: | |
661 | return -EOPNOTSUPP; | |
662 | } | |
663 | return 0; | |
664 | } | |
184a4635 | 665 | |
0efff300 JG |
666 | static void hisi_sas_task_done(struct sas_task *task) |
667 | { | |
668 | if (!del_timer(&task->slow_task->timer)) | |
669 | return; | |
670 | complete(&task->slow_task->completion); | |
671 | } | |
672 | ||
673 | static void hisi_sas_tmf_timedout(unsigned long data) | |
674 | { | |
675 | struct sas_task *task = (struct sas_task *)data; | |
676 | ||
677 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
678 | complete(&task->slow_task->completion); | |
679 | } | |
680 | ||
681 | #define TASK_TIMEOUT 20 | |
682 | #define TASK_RETRY 3 | |
683 | static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, | |
684 | void *parameter, u32 para_len, | |
685 | struct hisi_sas_tmf_task *tmf) | |
686 | { | |
687 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
688 | struct hisi_hba *hisi_hba = sas_dev->hisi_hba; | |
689 | struct device *dev = &hisi_hba->pdev->dev; | |
690 | struct sas_task *task; | |
691 | int res, retry; | |
692 | ||
693 | for (retry = 0; retry < TASK_RETRY; retry++) { | |
694 | task = sas_alloc_slow_task(GFP_KERNEL); | |
695 | if (!task) | |
696 | return -ENOMEM; | |
697 | ||
698 | task->dev = device; | |
699 | task->task_proto = device->tproto; | |
700 | ||
701 | memcpy(&task->ssp_task, parameter, para_len); | |
702 | task->task_done = hisi_sas_task_done; | |
703 | ||
704 | task->slow_task->timer.data = (unsigned long) task; | |
705 | task->slow_task->timer.function = hisi_sas_tmf_timedout; | |
706 | task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; | |
707 | add_timer(&task->slow_task->timer); | |
708 | ||
709 | res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); | |
710 | ||
711 | if (res) { | |
712 | del_timer(&task->slow_task->timer); | |
713 | dev_err(dev, "abort tmf: executing internal task failed: %d\n", | |
714 | res); | |
715 | goto ex_err; | |
716 | } | |
717 | ||
718 | wait_for_completion(&task->slow_task->completion); | |
719 | res = TMF_RESP_FUNC_FAILED; | |
720 | /* Even TMF timed out, return direct. */ | |
721 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
722 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
723 | dev_err(dev, "abort tmf: TMF task[%d] timeout\n", | |
724 | tmf->tag_of_task_to_be_managed); | |
725 | if (task->lldd_task) { | |
726 | struct hisi_sas_slot *slot = | |
727 | task->lldd_task; | |
728 | ||
729 | hisi_sas_slot_task_free(hisi_hba, | |
730 | task, slot); | |
731 | } | |
732 | ||
733 | goto ex_err; | |
734 | } | |
735 | } | |
736 | ||
737 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
1af1b808 | 738 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
0efff300 JG |
739 | res = TMF_RESP_FUNC_COMPLETE; |
740 | break; | |
741 | } | |
742 | ||
4ffde482 JG |
743 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
744 | task->task_status.stat == TMF_RESP_FUNC_SUCC) { | |
745 | res = TMF_RESP_FUNC_SUCC; | |
746 | break; | |
747 | } | |
748 | ||
0efff300 JG |
749 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
750 | task->task_status.stat == SAS_DATA_UNDERRUN) { | |
751 | /* no error, but return the number of bytes of | |
752 | * underrun | |
753 | */ | |
754 | dev_warn(dev, "abort tmf: task to dev %016llx " | |
755 | "resp: 0x%x sts 0x%x underrun\n", | |
756 | SAS_ADDR(device->sas_addr), | |
757 | task->task_status.resp, | |
758 | task->task_status.stat); | |
759 | res = task->task_status.residual; | |
760 | break; | |
761 | } | |
762 | ||
763 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
764 | task->task_status.stat == SAS_DATA_OVERRUN) { | |
765 | dev_warn(dev, "abort tmf: blocked task error\n"); | |
766 | res = -EMSGSIZE; | |
767 | break; | |
768 | } | |
769 | ||
770 | dev_warn(dev, "abort tmf: task to dev " | |
771 | "%016llx resp: 0x%x status 0x%x\n", | |
772 | SAS_ADDR(device->sas_addr), task->task_status.resp, | |
773 | task->task_status.stat); | |
774 | sas_free_task(task); | |
775 | task = NULL; | |
776 | } | |
777 | ex_err: | |
d2d7e7a0 XC |
778 | if (retry == TASK_RETRY) |
779 | dev_warn(dev, "abort tmf: executing internal task failed!\n"); | |
0efff300 JG |
780 | sas_free_task(task); |
781 | return res; | |
782 | } | |
783 | ||
784 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, | |
785 | u8 *lun, struct hisi_sas_tmf_task *tmf) | |
786 | { | |
787 | struct sas_ssp_task ssp_task; | |
788 | ||
789 | if (!(device->tproto & SAS_PROTOCOL_SSP)) | |
790 | return TMF_RESP_FUNC_ESUPP; | |
791 | ||
792 | memcpy(ssp_task.LUN, lun, 8); | |
793 | ||
794 | return hisi_sas_exec_internal_tmf_task(device, &ssp_task, | |
795 | sizeof(ssp_task), tmf); | |
796 | } | |
797 | ||
798 | static int hisi_sas_abort_task(struct sas_task *task) | |
799 | { | |
800 | struct scsi_lun lun; | |
801 | struct hisi_sas_tmf_task tmf_task; | |
802 | struct domain_device *device = task->dev; | |
803 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
804 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
805 | struct device *dev = &hisi_hba->pdev->dev; | |
806 | int rc = TMF_RESP_FUNC_FAILED; | |
807 | unsigned long flags; | |
808 | ||
809 | if (!sas_dev) { | |
810 | dev_warn(dev, "Device has been removed\n"); | |
811 | return TMF_RESP_FUNC_FAILED; | |
812 | } | |
813 | ||
814 | spin_lock_irqsave(&task->task_state_lock, flags); | |
815 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
816 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
817 | rc = TMF_RESP_FUNC_COMPLETE; | |
818 | goto out; | |
819 | } | |
820 | ||
821 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
822 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
823 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
824 | struct scsi_cmnd *cmnd = task->uldd_task; | |
825 | struct hisi_sas_slot *slot = task->lldd_task; | |
826 | u32 tag = slot->idx; | |
827 | ||
828 | int_to_scsilun(cmnd->device->lun, &lun); | |
829 | tmf_task.tmf = TMF_ABORT_TASK; | |
830 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
831 | ||
832 | rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, | |
833 | &tmf_task); | |
834 | ||
835 | /* if successful, clear the task and callback forwards.*/ | |
836 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
837 | if (task->lldd_task) { | |
838 | struct hisi_sas_slot *slot; | |
839 | ||
840 | slot = &hisi_hba->slot_info | |
841 | [tmf_task.tag_of_task_to_be_managed]; | |
842 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
843 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
844 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
845 | } | |
846 | } | |
847 | ||
dc8a49ca JG |
848 | hisi_sas_internal_task_abort(hisi_hba, device, |
849 | HISI_SAS_INT_ABT_CMD, tag); | |
0efff300 JG |
850 | } else if (task->task_proto & SAS_PROTOCOL_SATA || |
851 | task->task_proto & SAS_PROTOCOL_STP) { | |
852 | if (task->dev->dev_type == SAS_SATA_DEV) { | |
dc8a49ca JG |
853 | hisi_sas_internal_task_abort(hisi_hba, device, |
854 | HISI_SAS_INT_ABT_DEV, 0); | |
0efff300 | 855 | rc = TMF_RESP_FUNC_COMPLETE; |
0efff300 | 856 | } |
dc8a49ca JG |
857 | } else if (task->task_proto & SAS_PROTOCOL_SMP) { |
858 | /* SMP */ | |
859 | struct hisi_sas_slot *slot = task->lldd_task; | |
860 | u32 tag = slot->idx; | |
0efff300 | 861 | |
dc8a49ca JG |
862 | hisi_sas_internal_task_abort(hisi_hba, device, |
863 | HISI_SAS_INT_ABT_CMD, tag); | |
0efff300 JG |
864 | } |
865 | ||
866 | out: | |
867 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
868 | dev_notice(dev, "abort task: rc=%d\n", rc); | |
869 | return rc; | |
870 | } | |
871 | ||
872 | static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) | |
873 | { | |
874 | struct hisi_sas_tmf_task tmf_task; | |
875 | int rc = TMF_RESP_FUNC_FAILED; | |
876 | ||
877 | tmf_task.tmf = TMF_ABORT_TASK_SET; | |
878 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
879 | ||
880 | return rc; | |
881 | } | |
882 | ||
883 | static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) | |
884 | { | |
885 | int rc = TMF_RESP_FUNC_FAILED; | |
886 | struct hisi_sas_tmf_task tmf_task; | |
887 | ||
888 | tmf_task.tmf = TMF_CLEAR_ACA; | |
889 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
890 | ||
891 | return rc; | |
892 | } | |
893 | ||
894 | static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) | |
895 | { | |
896 | struct sas_phy *phy = sas_get_local_phy(device); | |
897 | int rc, reset_type = (device->dev_type == SAS_SATA_DEV || | |
898 | (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; | |
899 | rc = sas_phy_reset(phy, reset_type); | |
900 | sas_put_local_phy(phy); | |
901 | msleep(2000); | |
902 | return rc; | |
903 | } | |
904 | ||
905 | static int hisi_sas_I_T_nexus_reset(struct domain_device *device) | |
906 | { | |
907 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
908 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
909 | unsigned long flags; | |
910 | int rc = TMF_RESP_FUNC_FAILED; | |
911 | ||
912 | if (sas_dev->dev_status != HISI_SAS_DEV_EH) | |
913 | return TMF_RESP_FUNC_FAILED; | |
914 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
915 | ||
916 | rc = hisi_sas_debug_I_T_nexus_reset(device); | |
917 | ||
918 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
919 | hisi_sas_release_task(hisi_hba, device); | |
920 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
921 | ||
922 | return 0; | |
923 | } | |
924 | ||
925 | static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) | |
926 | { | |
927 | struct hisi_sas_tmf_task tmf_task; | |
928 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
929 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
930 | struct device *dev = &hisi_hba->pdev->dev; | |
931 | unsigned long flags; | |
932 | int rc = TMF_RESP_FUNC_FAILED; | |
933 | ||
934 | tmf_task.tmf = TMF_LU_RESET; | |
935 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
936 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
937 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
938 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
939 | hisi_sas_release_task(hisi_hba, device); | |
940 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
941 | } | |
942 | ||
943 | /* If failed, fall-through I_T_Nexus reset */ | |
944 | dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n", | |
945 | sas_dev->device_id, rc); | |
946 | return rc; | |
947 | } | |
948 | ||
949 | static int hisi_sas_query_task(struct sas_task *task) | |
950 | { | |
951 | struct scsi_lun lun; | |
952 | struct hisi_sas_tmf_task tmf_task; | |
953 | int rc = TMF_RESP_FUNC_FAILED; | |
954 | ||
955 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
956 | struct scsi_cmnd *cmnd = task->uldd_task; | |
957 | struct domain_device *device = task->dev; | |
958 | struct hisi_sas_slot *slot = task->lldd_task; | |
959 | u32 tag = slot->idx; | |
960 | ||
961 | int_to_scsilun(cmnd->device->lun, &lun); | |
962 | tmf_task.tmf = TMF_QUERY_TASK; | |
963 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
964 | ||
965 | rc = hisi_sas_debug_issue_ssp_tmf(device, | |
966 | lun.scsi_lun, | |
967 | &tmf_task); | |
968 | switch (rc) { | |
969 | /* The task is still in Lun, release it then */ | |
970 | case TMF_RESP_FUNC_SUCC: | |
971 | /* The task is not in Lun or failed, reset the phy */ | |
972 | case TMF_RESP_FUNC_FAILED: | |
973 | case TMF_RESP_FUNC_COMPLETE: | |
974 | break; | |
997ee43c XC |
975 | default: |
976 | rc = TMF_RESP_FUNC_FAILED; | |
977 | break; | |
0efff300 JG |
978 | } |
979 | } | |
980 | return rc; | |
981 | } | |
982 | ||
441c2740 JG |
983 | static int |
984 | hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, u64 device_id, | |
985 | struct sas_task *task, int abort_flag, | |
986 | int task_tag) | |
987 | { | |
988 | struct domain_device *device = task->dev; | |
989 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
990 | struct device *dev = &hisi_hba->pdev->dev; | |
991 | struct hisi_sas_port *port; | |
992 | struct hisi_sas_slot *slot; | |
993 | struct hisi_sas_cmd_hdr *cmd_hdr_base; | |
994 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; | |
995 | ||
996 | if (!device->port) | |
997 | return -1; | |
998 | ||
999 | port = device->port->lldd_port; | |
1000 | ||
1001 | /* simply get a slot and send abort command */ | |
1002 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); | |
1003 | if (rc) | |
1004 | goto err_out; | |
c70f1fb7 XC |
1005 | rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id, |
1006 | &dlvry_queue, &dlvry_queue_slot); | |
441c2740 JG |
1007 | if (rc) |
1008 | goto err_out_tag; | |
1009 | ||
1010 | slot = &hisi_hba->slot_info[slot_idx]; | |
1011 | memset(slot, 0, sizeof(struct hisi_sas_slot)); | |
1012 | ||
1013 | slot->idx = slot_idx; | |
1014 | slot->n_elem = n_elem; | |
1015 | slot->dlvry_queue = dlvry_queue; | |
1016 | slot->dlvry_queue_slot = dlvry_queue_slot; | |
1017 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; | |
1018 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; | |
1019 | slot->task = task; | |
1020 | slot->port = port; | |
1021 | task->lldd_task = slot; | |
1022 | ||
1023 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); | |
1024 | ||
1025 | rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id, | |
1026 | abort_flag, task_tag); | |
1027 | if (rc) | |
1028 | goto err_out_tag; | |
1029 | ||
1030 | /* Port structure is static for the HBA, so | |
1031 | * even if the port is deformed it is ok | |
1032 | * to reference. | |
1033 | */ | |
1034 | list_add_tail(&slot->entry, &port->list); | |
1035 | spin_lock(&task->task_state_lock); | |
1036 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
1037 | spin_unlock(&task->task_state_lock); | |
1038 | ||
1039 | hisi_hba->slot_prep = slot; | |
1040 | ||
f696cc32 JG |
1041 | atomic64_inc(&sas_dev->running_req); |
1042 | ||
441c2740 JG |
1043 | /* send abort command to our chip */ |
1044 | hisi_hba->hw->start_delivery(hisi_hba); | |
1045 | ||
1046 | return 0; | |
1047 | ||
1048 | err_out_tag: | |
1049 | hisi_sas_slot_index_free(hisi_hba, slot_idx); | |
1050 | err_out: | |
1051 | dev_err(dev, "internal abort task prep: failed[%d]!\n", rc); | |
1052 | ||
1053 | return rc; | |
1054 | } | |
1055 | ||
1056 | /** | |
1057 | * hisi_sas_internal_task_abort -- execute an internal | |
1058 | * abort command for single IO command or a device | |
1059 | * @hisi_hba: host controller struct | |
1060 | * @device: domain device | |
1061 | * @abort_flag: mode of operation, device or single IO | |
1062 | * @tag: tag of IO to be aborted (only relevant to single | |
1063 | * IO mode) | |
1064 | */ | |
1065 | static int | |
1066 | hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, | |
1067 | struct domain_device *device, | |
1068 | int abort_flag, int tag) | |
1069 | { | |
1070 | struct sas_task *task; | |
1071 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
1072 | struct device *dev = &hisi_hba->pdev->dev; | |
1073 | int res; | |
1074 | unsigned long flags; | |
1075 | ||
1076 | if (!hisi_hba->hw->prep_abort) | |
1077 | return -EOPNOTSUPP; | |
1078 | ||
1079 | task = sas_alloc_slow_task(GFP_KERNEL); | |
1080 | if (!task) | |
1081 | return -ENOMEM; | |
1082 | ||
1083 | task->dev = device; | |
1084 | task->task_proto = device->tproto; | |
1085 | task->task_done = hisi_sas_task_done; | |
1086 | task->slow_task->timer.data = (unsigned long)task; | |
1087 | task->slow_task->timer.function = hisi_sas_tmf_timedout; | |
1088 | task->slow_task->timer.expires = jiffies + 20*HZ; | |
1089 | add_timer(&task->slow_task->timer); | |
1090 | ||
1091 | /* Lock as we are alloc'ing a slot, which cannot be interrupted */ | |
1092 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
1093 | res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id, | |
1094 | task, abort_flag, tag); | |
1095 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
1096 | if (res) { | |
1097 | del_timer(&task->slow_task->timer); | |
1098 | dev_err(dev, "internal task abort: executing internal task failed: %d\n", | |
1099 | res); | |
1100 | goto exit; | |
1101 | } | |
1102 | wait_for_completion(&task->slow_task->completion); | |
1103 | res = TMF_RESP_FUNC_FAILED; | |
1104 | ||
1105 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
1106 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { | |
1107 | res = TMF_RESP_FUNC_COMPLETE; | |
1108 | goto exit; | |
1109 | } | |
1110 | ||
1111 | /* TMF timed out, return direct. */ | |
1112 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
1113 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
1114 | dev_err(dev, "internal task abort: timeout.\n"); | |
1115 | if (task->lldd_task) { | |
1116 | struct hisi_sas_slot *slot = task->lldd_task; | |
1117 | ||
1118 | hisi_sas_slot_task_free(hisi_hba, task, slot); | |
1119 | } | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | exit: | |
297d7302 | 1124 | dev_dbg(dev, "internal task abort: task to dev %016llx task=%p " |
441c2740 JG |
1125 | "resp: 0x%x sts 0x%x\n", |
1126 | SAS_ADDR(device->sas_addr), | |
1127 | task, | |
1128 | task->task_status.resp, /* 0 is complete, -1 is undelivered */ | |
1129 | task->task_status.stat); | |
1130 | sas_free_task(task); | |
1131 | ||
1132 | return res; | |
1133 | } | |
1134 | ||
184a4635 JG |
1135 | static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) |
1136 | { | |
1137 | hisi_sas_port_notify_formed(sas_phy); | |
1138 | } | |
1139 | ||
1140 | static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy) | |
1141 | { | |
1142 | hisi_sas_port_notify_deformed(sas_phy); | |
1143 | } | |
1144 | ||
1145 | static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) | |
1146 | { | |
1147 | phy->phy_attached = 0; | |
1148 | phy->phy_type = 0; | |
1149 | phy->port = NULL; | |
1150 | } | |
1151 | ||
1152 | void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) | |
1153 | { | |
1154 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
1155 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
1156 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; | |
1157 | ||
1158 | if (rdy) { | |
1159 | /* Phy down but ready */ | |
1160 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
1161 | hisi_sas_port_notify_formed(sas_phy); | |
1162 | } else { | |
1163 | struct hisi_sas_port *port = phy->port; | |
1164 | ||
1165 | /* Phy down and not ready */ | |
1166 | sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); | |
1167 | sas_phy_disconnected(sas_phy); | |
1168 | ||
1169 | if (port) { | |
1170 | if (phy->phy_type & PORT_TYPE_SAS) { | |
1171 | int port_id = port->id; | |
1172 | ||
1173 | if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, | |
1174 | port_id)) | |
1175 | port->port_attached = 0; | |
1176 | } else if (phy->phy_type & PORT_TYPE_SATA) | |
1177 | port->port_attached = 0; | |
1178 | } | |
1179 | hisi_sas_phy_disconnected(phy); | |
1180 | } | |
1181 | } | |
1182 | EXPORT_SYMBOL_GPL(hisi_sas_phy_down); | |
1183 | ||
e8899fad JG |
1184 | static struct scsi_transport_template *hisi_sas_stt; |
1185 | ||
7eb7869f JG |
1186 | static struct scsi_host_template hisi_sas_sht = { |
1187 | .module = THIS_MODULE, | |
1188 | .name = DRV_NAME, | |
1189 | .queuecommand = sas_queuecommand, | |
1190 | .target_alloc = sas_target_alloc, | |
31eec8a6 | 1191 | .slave_configure = hisi_sas_slave_configure, |
701f75ec JG |
1192 | .scan_finished = hisi_sas_scan_finished, |
1193 | .scan_start = hisi_sas_scan_start, | |
7eb7869f JG |
1194 | .change_queue_depth = sas_change_queue_depth, |
1195 | .bios_param = sas_bios_param, | |
1196 | .can_queue = 1, | |
1197 | .this_id = -1, | |
1198 | .sg_tablesize = SG_ALL, | |
1199 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, | |
1200 | .use_clustering = ENABLE_CLUSTERING, | |
1201 | .eh_device_reset_handler = sas_eh_device_reset_handler, | |
1202 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, | |
1203 | .target_destroy = sas_target_destroy, | |
1204 | .ioctl = sas_ioctl, | |
1205 | }; | |
1206 | ||
e8899fad | 1207 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
abda97c2 JG |
1208 | .lldd_dev_found = hisi_sas_dev_found, |
1209 | .lldd_dev_gone = hisi_sas_dev_gone, | |
42e7a693 | 1210 | .lldd_execute_task = hisi_sas_queue_command, |
e4189d53 | 1211 | .lldd_control_phy = hisi_sas_control_phy, |
0efff300 JG |
1212 | .lldd_abort_task = hisi_sas_abort_task, |
1213 | .lldd_abort_task_set = hisi_sas_abort_task_set, | |
1214 | .lldd_clear_aca = hisi_sas_clear_aca, | |
1215 | .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, | |
1216 | .lldd_lu_reset = hisi_sas_lu_reset, | |
1217 | .lldd_query_task = hisi_sas_query_task, | |
184a4635 JG |
1218 | .lldd_port_formed = hisi_sas_port_formed, |
1219 | .lldd_port_deformed = hisi_sas_port_deformed, | |
e8899fad JG |
1220 | }; |
1221 | ||
6be6de18 JG |
1222 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
1223 | { | |
6be6de18 JG |
1224 | struct platform_device *pdev = hisi_hba->pdev; |
1225 | struct device *dev = &pdev->dev; | |
a8d547bd | 1226 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
6be6de18 | 1227 | |
fa42d80d | 1228 | spin_lock_init(&hisi_hba->lock); |
976867e6 JG |
1229 | for (i = 0; i < hisi_hba->n_phy; i++) { |
1230 | hisi_sas_phy_init(hisi_hba, i); | |
1231 | hisi_hba->port[i].port_attached = 0; | |
1232 | hisi_hba->port[i].id = -1; | |
1233 | INIT_LIST_HEAD(&hisi_hba->port[i].list); | |
1234 | } | |
1235 | ||
af740dbe JG |
1236 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
1237 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; | |
1238 | hisi_hba->devices[i].device_id = i; | |
1239 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; | |
1240 | } | |
1241 | ||
6be6de18 | 1242 | for (i = 0; i < hisi_hba->queue_count; i++) { |
9101a079 | 1243 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
4fde02ad | 1244 | struct hisi_sas_dq *dq = &hisi_hba->dq[i]; |
9101a079 JG |
1245 | |
1246 | /* Completion queue structure */ | |
1247 | cq->id = i; | |
1248 | cq->hisi_hba = hisi_hba; | |
1249 | ||
4fde02ad JG |
1250 | /* Delivery queue structure */ |
1251 | dq->id = i; | |
1252 | dq->hisi_hba = hisi_hba; | |
1253 | ||
6be6de18 JG |
1254 | /* Delivery queue */ |
1255 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1256 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, | |
1257 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); | |
1258 | if (!hisi_hba->cmd_hdr[i]) | |
1259 | goto err_out; | |
1260 | memset(hisi_hba->cmd_hdr[i], 0, s); | |
1261 | ||
1262 | /* Completion queue */ | |
1263 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1264 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, | |
1265 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); | |
1266 | if (!hisi_hba->complete_hdr[i]) | |
1267 | goto err_out; | |
1268 | memset(hisi_hba->complete_hdr[i], 0, s); | |
1269 | } | |
1270 | ||
1271 | s = HISI_SAS_STATUS_BUF_SZ; | |
1272 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", | |
1273 | dev, s, 16, 0); | |
1274 | if (!hisi_hba->status_buffer_pool) | |
1275 | goto err_out; | |
1276 | ||
1277 | s = HISI_SAS_COMMAND_TABLE_SZ; | |
1278 | hisi_hba->command_table_pool = dma_pool_create("command_table", | |
1279 | dev, s, 16, 0); | |
1280 | if (!hisi_hba->command_table_pool) | |
1281 | goto err_out; | |
1282 | ||
1283 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1284 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, | |
1285 | GFP_KERNEL); | |
1286 | if (!hisi_hba->itct) | |
1287 | goto err_out; | |
1288 | ||
1289 | memset(hisi_hba->itct, 0, s); | |
1290 | ||
a8d547bd | 1291 | hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, |
6be6de18 JG |
1292 | sizeof(struct hisi_sas_slot), |
1293 | GFP_KERNEL); | |
1294 | if (!hisi_hba->slot_info) | |
1295 | goto err_out; | |
1296 | ||
a8d547bd | 1297 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
6be6de18 JG |
1298 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
1299 | GFP_KERNEL); | |
1300 | if (!hisi_hba->iost) | |
1301 | goto err_out; | |
1302 | ||
1303 | memset(hisi_hba->iost, 0, s); | |
1304 | ||
a8d547bd | 1305 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
6be6de18 JG |
1306 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
1307 | &hisi_hba->breakpoint_dma, GFP_KERNEL); | |
1308 | if (!hisi_hba->breakpoint) | |
1309 | goto err_out; | |
1310 | ||
1311 | memset(hisi_hba->breakpoint, 0, s); | |
1312 | ||
a8d547bd | 1313 | hisi_hba->slot_index_count = max_command_entries; |
433f5696 | 1314 | s = hisi_hba->slot_index_count / BITS_PER_BYTE; |
257efd1f JG |
1315 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); |
1316 | if (!hisi_hba->slot_index_tags) | |
1317 | goto err_out; | |
1318 | ||
6be6de18 JG |
1319 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
1320 | sizeof(struct hisi_sas_sge_page), 16, 0); | |
1321 | if (!hisi_hba->sge_page_pool) | |
1322 | goto err_out; | |
1323 | ||
1324 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1325 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, | |
1326 | &hisi_hba->initial_fis_dma, GFP_KERNEL); | |
1327 | if (!hisi_hba->initial_fis) | |
1328 | goto err_out; | |
1329 | memset(hisi_hba->initial_fis, 0, s); | |
1330 | ||
a8d547bd | 1331 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
6be6de18 JG |
1332 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
1333 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); | |
1334 | if (!hisi_hba->sata_breakpoint) | |
1335 | goto err_out; | |
1336 | memset(hisi_hba->sata_breakpoint, 0, s); | |
1337 | ||
257efd1f JG |
1338 | hisi_sas_slot_index_init(hisi_hba); |
1339 | ||
7e9080e1 JG |
1340 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
1341 | if (!hisi_hba->wq) { | |
1342 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); | |
1343 | goto err_out; | |
1344 | } | |
1345 | ||
6be6de18 JG |
1346 | return 0; |
1347 | err_out: | |
1348 | return -ENOMEM; | |
1349 | } | |
1350 | ||
89d53322 JG |
1351 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
1352 | { | |
1353 | struct device *dev = &hisi_hba->pdev->dev; | |
a8d547bd | 1354 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
89d53322 JG |
1355 | |
1356 | for (i = 0; i < hisi_hba->queue_count; i++) { | |
1357 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1358 | if (hisi_hba->cmd_hdr[i]) | |
1359 | dma_free_coherent(dev, s, | |
1360 | hisi_hba->cmd_hdr[i], | |
1361 | hisi_hba->cmd_hdr_dma[i]); | |
1362 | ||
1363 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1364 | if (hisi_hba->complete_hdr[i]) | |
1365 | dma_free_coherent(dev, s, | |
1366 | hisi_hba->complete_hdr[i], | |
1367 | hisi_hba->complete_hdr_dma[i]); | |
1368 | } | |
1369 | ||
1370 | dma_pool_destroy(hisi_hba->status_buffer_pool); | |
1371 | dma_pool_destroy(hisi_hba->command_table_pool); | |
1372 | dma_pool_destroy(hisi_hba->sge_page_pool); | |
1373 | ||
1374 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1375 | if (hisi_hba->itct) | |
1376 | dma_free_coherent(dev, s, | |
1377 | hisi_hba->itct, hisi_hba->itct_dma); | |
1378 | ||
a8d547bd | 1379 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
89d53322 JG |
1380 | if (hisi_hba->iost) |
1381 | dma_free_coherent(dev, s, | |
1382 | hisi_hba->iost, hisi_hba->iost_dma); | |
1383 | ||
a8d547bd | 1384 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
89d53322 JG |
1385 | if (hisi_hba->breakpoint) |
1386 | dma_free_coherent(dev, s, | |
1387 | hisi_hba->breakpoint, | |
1388 | hisi_hba->breakpoint_dma); | |
1389 | ||
1390 | ||
1391 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1392 | if (hisi_hba->initial_fis) | |
1393 | dma_free_coherent(dev, s, | |
1394 | hisi_hba->initial_fis, | |
1395 | hisi_hba->initial_fis_dma); | |
1396 | ||
a8d547bd | 1397 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
89d53322 JG |
1398 | if (hisi_hba->sata_breakpoint) |
1399 | dma_free_coherent(dev, s, | |
1400 | hisi_hba->sata_breakpoint, | |
1401 | hisi_hba->sata_breakpoint_dma); | |
1402 | ||
7e9080e1 JG |
1403 | if (hisi_hba->wq) |
1404 | destroy_workqueue(hisi_hba->wq); | |
89d53322 | 1405 | } |
6be6de18 | 1406 | |
7eb7869f JG |
1407 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
1408 | const struct hisi_sas_hw *hw) | |
1409 | { | |
e26b2f40 | 1410 | struct resource *res; |
7eb7869f JG |
1411 | struct Scsi_Host *shost; |
1412 | struct hisi_hba *hisi_hba; | |
1413 | struct device *dev = &pdev->dev; | |
e26b2f40 | 1414 | struct device_node *np = pdev->dev.of_node; |
3bc45af8 | 1415 | struct clk *refclk; |
7eb7869f JG |
1416 | |
1417 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); | |
d37a0082 XT |
1418 | if (!shost) { |
1419 | dev_err(dev, "scsi host alloc failed\n"); | |
1420 | return NULL; | |
1421 | } | |
7eb7869f JG |
1422 | hisi_hba = shost_priv(shost); |
1423 | ||
1424 | hisi_hba->hw = hw; | |
1425 | hisi_hba->pdev = pdev; | |
1426 | hisi_hba->shost = shost; | |
1427 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; | |
1428 | ||
fa42d80d JG |
1429 | init_timer(&hisi_hba->timer); |
1430 | ||
4d558c77 JG |
1431 | if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, |
1432 | SAS_ADDR_SIZE)) | |
e26b2f40 | 1433 | goto err_out; |
e26b2f40 | 1434 | |
4d558c77 JG |
1435 | if (np) { |
1436 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, | |
1437 | "hisilicon,sas-syscon"); | |
1438 | if (IS_ERR(hisi_hba->ctrl)) | |
1439 | goto err_out; | |
e26b2f40 | 1440 | |
4d558c77 JG |
1441 | if (device_property_read_u32(dev, "ctrl-reset-reg", |
1442 | &hisi_hba->ctrl_reset_reg)) | |
1443 | goto err_out; | |
e26b2f40 | 1444 | |
4d558c77 JG |
1445 | if (device_property_read_u32(dev, "ctrl-reset-sts-reg", |
1446 | &hisi_hba->ctrl_reset_sts_reg)) | |
1447 | goto err_out; | |
e26b2f40 | 1448 | |
4d558c77 JG |
1449 | if (device_property_read_u32(dev, "ctrl-clock-ena-reg", |
1450 | &hisi_hba->ctrl_clock_ena_reg)) | |
1451 | goto err_out; | |
1452 | } | |
1453 | ||
3bc45af8 JG |
1454 | refclk = devm_clk_get(&pdev->dev, NULL); |
1455 | if (IS_ERR(refclk)) | |
87e287c1 | 1456 | dev_dbg(dev, "no ref clk property\n"); |
3bc45af8 JG |
1457 | else |
1458 | hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000; | |
1459 | ||
4d558c77 | 1460 | if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) |
e26b2f40 JG |
1461 | goto err_out; |
1462 | ||
4d558c77 JG |
1463 | if (device_property_read_u32(dev, "queue-count", |
1464 | &hisi_hba->queue_count)) | |
e26b2f40 JG |
1465 | goto err_out; |
1466 | ||
a6f2c7ff JG |
1467 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && |
1468 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { | |
1469 | dev_err(dev, "No usable DMA addressing method\n"); | |
1470 | goto err_out; | |
1471 | } | |
1472 | ||
e26b2f40 JG |
1473 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1474 | hisi_hba->regs = devm_ioremap_resource(dev, res); | |
1475 | if (IS_ERR(hisi_hba->regs)) | |
1476 | goto err_out; | |
1477 | ||
89d53322 JG |
1478 | if (hisi_sas_alloc(hisi_hba, shost)) { |
1479 | hisi_sas_free(hisi_hba); | |
6be6de18 | 1480 | goto err_out; |
89d53322 | 1481 | } |
6be6de18 | 1482 | |
7eb7869f JG |
1483 | return shost; |
1484 | err_out: | |
d37a0082 | 1485 | kfree(shost); |
7eb7869f JG |
1486 | dev_err(dev, "shost alloc failed\n"); |
1487 | return NULL; | |
1488 | } | |
1489 | ||
5d74242e JG |
1490 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
1491 | { | |
1492 | int i; | |
1493 | ||
1494 | for (i = 0; i < hisi_hba->n_phy; i++) | |
1495 | memcpy(&hisi_hba->phy[i].dev_sas_addr, | |
1496 | hisi_hba->sas_addr, | |
1497 | SAS_ADDR_SIZE); | |
1498 | } | |
1499 | ||
7eb7869f JG |
1500 | int hisi_sas_probe(struct platform_device *pdev, |
1501 | const struct hisi_sas_hw *hw) | |
1502 | { | |
1503 | struct Scsi_Host *shost; | |
1504 | struct hisi_hba *hisi_hba; | |
1505 | struct device *dev = &pdev->dev; | |
1506 | struct asd_sas_phy **arr_phy; | |
1507 | struct asd_sas_port **arr_port; | |
1508 | struct sas_ha_struct *sha; | |
1509 | int rc, phy_nr, port_nr, i; | |
1510 | ||
1511 | shost = hisi_sas_shost_alloc(pdev, hw); | |
d37a0082 XT |
1512 | if (!shost) |
1513 | return -ENOMEM; | |
7eb7869f JG |
1514 | |
1515 | sha = SHOST_TO_SAS_HA(shost); | |
1516 | hisi_hba = shost_priv(shost); | |
1517 | platform_set_drvdata(pdev, sha); | |
50cb916f | 1518 | |
7eb7869f JG |
1519 | phy_nr = port_nr = hisi_hba->n_phy; |
1520 | ||
1521 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); | |
1522 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); | |
d37a0082 XT |
1523 | if (!arr_phy || !arr_port) { |
1524 | rc = -ENOMEM; | |
1525 | goto err_out_ha; | |
1526 | } | |
7eb7869f JG |
1527 | |
1528 | sha->sas_phy = arr_phy; | |
1529 | sha->sas_port = arr_port; | |
7eb7869f JG |
1530 | sha->lldd_ha = hisi_hba; |
1531 | ||
1532 | shost->transportt = hisi_sas_stt; | |
1533 | shost->max_id = HISI_SAS_MAX_DEVICES; | |
1534 | shost->max_lun = ~0; | |
1535 | shost->max_channel = 1; | |
1536 | shost->max_cmd_len = 16; | |
1537 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); | |
a8d547bd JG |
1538 | shost->can_queue = hisi_hba->hw->max_command_entries; |
1539 | shost->cmd_per_lun = hisi_hba->hw->max_command_entries; | |
7eb7869f JG |
1540 | |
1541 | sha->sas_ha_name = DRV_NAME; | |
1542 | sha->dev = &hisi_hba->pdev->dev; | |
1543 | sha->lldd_module = THIS_MODULE; | |
1544 | sha->sas_addr = &hisi_hba->sas_addr[0]; | |
1545 | sha->num_phys = hisi_hba->n_phy; | |
1546 | sha->core.shost = hisi_hba->shost; | |
1547 | ||
1548 | for (i = 0; i < hisi_hba->n_phy; i++) { | |
1549 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; | |
1550 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; | |
1551 | } | |
1552 | ||
5d74242e JG |
1553 | hisi_sas_init_add(hisi_hba); |
1554 | ||
8ff1d571 JG |
1555 | rc = hisi_hba->hw->hw_init(hisi_hba); |
1556 | if (rc) | |
1557 | goto err_out_ha; | |
1558 | ||
7eb7869f JG |
1559 | rc = scsi_add_host(shost, &pdev->dev); |
1560 | if (rc) | |
1561 | goto err_out_ha; | |
1562 | ||
1563 | rc = sas_register_ha(sha); | |
1564 | if (rc) | |
1565 | goto err_out_register_ha; | |
1566 | ||
1567 | scsi_scan_host(shost); | |
1568 | ||
1569 | return 0; | |
1570 | ||
1571 | err_out_register_ha: | |
1572 | scsi_remove_host(shost); | |
1573 | err_out_ha: | |
d37a0082 | 1574 | hisi_sas_free(hisi_hba); |
7eb7869f JG |
1575 | kfree(shost); |
1576 | return rc; | |
1577 | } | |
1578 | EXPORT_SYMBOL_GPL(hisi_sas_probe); | |
1579 | ||
89d53322 JG |
1580 | int hisi_sas_remove(struct platform_device *pdev) |
1581 | { | |
1582 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); | |
1583 | struct hisi_hba *hisi_hba = sha->lldd_ha; | |
d37a0082 | 1584 | struct Scsi_Host *shost = sha->core.shost; |
89d53322 JG |
1585 | |
1586 | scsi_remove_host(sha->core.shost); | |
1587 | sas_unregister_ha(sha); | |
1588 | sas_remove_host(sha->core.shost); | |
1589 | ||
1590 | hisi_sas_free(hisi_hba); | |
d37a0082 | 1591 | kfree(shost); |
89d53322 JG |
1592 | return 0; |
1593 | } | |
1594 | EXPORT_SYMBOL_GPL(hisi_sas_remove); | |
1595 | ||
e8899fad JG |
1596 | static __init int hisi_sas_init(void) |
1597 | { | |
1598 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); | |
1599 | ||
1600 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); | |
1601 | if (!hisi_sas_stt) | |
1602 | return -ENOMEM; | |
1603 | ||
1604 | return 0; | |
1605 | } | |
1606 | ||
1607 | static __exit void hisi_sas_exit(void) | |
1608 | { | |
1609 | sas_release_transport(hisi_sas_stt); | |
1610 | } | |
1611 | ||
1612 | module_init(hisi_sas_init); | |
1613 | module_exit(hisi_sas_exit); | |
1614 | ||
1615 | MODULE_VERSION(DRV_VERSION); | |
1616 | MODULE_LICENSE("GPL"); | |
1617 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); | |
1618 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); | |
1619 | MODULE_ALIAS("platform:" DRV_NAME); |