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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); | |
7c594f04 | 24 | static int hisi_sas_softreset_ata_disk(struct domain_device *device); |
cac9b2a2 | 25 | |
42e7a693 JG |
26 | static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) |
27 | { | |
28 | return device->port->ha->lldd_ha; | |
29 | } | |
30 | ||
2e244f0f JG |
31 | struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port) |
32 | { | |
33 | return container_of(sas_port, struct hisi_sas_port, sas_port); | |
34 | } | |
35 | EXPORT_SYMBOL_GPL(to_hisi_sas_port); | |
36 | ||
257efd1f JG |
37 | static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) |
38 | { | |
39 | void *bitmap = hisi_hba->slot_index_tags; | |
40 | ||
41 | clear_bit(slot_idx, bitmap); | |
42 | } | |
43 | ||
42e7a693 JG |
44 | static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) |
45 | { | |
46 | hisi_sas_slot_index_clear(hisi_hba, slot_idx); | |
47 | } | |
48 | ||
49 | static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) | |
50 | { | |
51 | void *bitmap = hisi_hba->slot_index_tags; | |
52 | ||
53 | set_bit(slot_idx, bitmap); | |
54 | } | |
55 | ||
56 | static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx) | |
57 | { | |
58 | unsigned int index; | |
59 | void *bitmap = hisi_hba->slot_index_tags; | |
60 | ||
61 | index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count); | |
62 | if (index >= hisi_hba->slot_index_count) | |
63 | return -SAS_QUEUE_FULL; | |
64 | hisi_sas_slot_index_set(hisi_hba, index); | |
65 | *slot_idx = index; | |
66 | return 0; | |
67 | } | |
68 | ||
257efd1f JG |
69 | static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) |
70 | { | |
71 | int i; | |
72 | ||
73 | for (i = 0; i < hisi_hba->slot_index_count; ++i) | |
74 | hisi_sas_slot_index_clear(hisi_hba, i); | |
75 | } | |
27a3f229 JG |
76 | |
77 | void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, | |
78 | struct hisi_sas_slot *slot) | |
79 | { | |
80 | struct device *dev = &hisi_hba->pdev->dev; | |
13c59906 XC |
81 | struct domain_device *device = task->dev; |
82 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
27a3f229 JG |
83 | |
84 | if (!slot->task) | |
85 | return; | |
86 | ||
87 | if (!sas_protocol_ata(task->task_proto)) | |
88 | if (slot->n_elem) | |
89 | dma_unmap_sg(dev, task->scatter, slot->n_elem, | |
90 | task->data_dir); | |
91 | ||
92 | if (slot->command_table) | |
93 | dma_pool_free(hisi_hba->command_table_pool, | |
94 | slot->command_table, slot->command_table_dma); | |
95 | ||
96 | if (slot->status_buffer) | |
97 | dma_pool_free(hisi_hba->status_buffer_pool, | |
98 | slot->status_buffer, slot->status_buffer_dma); | |
99 | ||
100 | if (slot->sge_page) | |
101 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
102 | slot->sge_page_dma); | |
103 | ||
104 | list_del_init(&slot->entry); | |
105 | task->lldd_task = NULL; | |
106 | slot->task = NULL; | |
107 | slot->port = NULL; | |
108 | hisi_sas_slot_index_free(hisi_hba, slot->idx); | |
13c59906 XC |
109 | if (sas_dev) |
110 | atomic64_dec(&sas_dev->running_req); | |
59ba49f9 | 111 | /* slot memory is fully zeroed when it is reused */ |
27a3f229 JG |
112 | } |
113 | EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); | |
114 | ||
66ee999b JG |
115 | static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, |
116 | struct hisi_sas_slot *slot) | |
117 | { | |
118 | return hisi_hba->hw->prep_smp(hisi_hba, slot); | |
119 | } | |
120 | ||
42e7a693 JG |
121 | static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, |
122 | struct hisi_sas_slot *slot, int is_tmf, | |
123 | struct hisi_sas_tmf_task *tmf) | |
124 | { | |
125 | return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
126 | } | |
127 | ||
6f2ff1a1 JG |
128 | static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, |
129 | struct hisi_sas_slot *slot) | |
130 | { | |
131 | return hisi_hba->hw->prep_stp(hisi_hba, slot); | |
132 | } | |
133 | ||
441c2740 JG |
134 | static int hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba, |
135 | struct hisi_sas_slot *slot, | |
136 | int device_id, int abort_flag, int tag_to_abort) | |
137 | { | |
138 | return hisi_hba->hw->prep_abort(hisi_hba, slot, | |
139 | device_id, abort_flag, tag_to_abort); | |
140 | } | |
141 | ||
cac9b2a2 JG |
142 | /* |
143 | * This function will issue an abort TMF regardless of whether the | |
144 | * task is in the sdev or not. Then it will do the task complete | |
145 | * cleanup and callbacks. | |
146 | */ | |
147 | static void hisi_sas_slot_abort(struct work_struct *work) | |
148 | { | |
149 | struct hisi_sas_slot *abort_slot = | |
150 | container_of(work, struct hisi_sas_slot, abort_slot); | |
151 | struct sas_task *task = abort_slot->task; | |
152 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
153 | struct scsi_cmnd *cmnd = task->uldd_task; | |
154 | struct hisi_sas_tmf_task tmf_task; | |
cac9b2a2 JG |
155 | struct scsi_lun lun; |
156 | struct device *dev = &hisi_hba->pdev->dev; | |
157 | int tag = abort_slot->idx; | |
da7b66e7 | 158 | unsigned long flags; |
cac9b2a2 JG |
159 | |
160 | if (!(task->task_proto & SAS_PROTOCOL_SSP)) { | |
161 | dev_err(dev, "cannot abort slot for non-ssp task\n"); | |
162 | goto out; | |
163 | } | |
164 | ||
165 | int_to_scsilun(cmnd->device->lun, &lun); | |
166 | tmf_task.tmf = TMF_ABORT_TASK; | |
167 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
168 | ||
169 | hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task); | |
170 | out: | |
171 | /* Do cleanup for this task */ | |
da7b66e7 | 172 | spin_lock_irqsave(&hisi_hba->lock, flags); |
cac9b2a2 | 173 | hisi_sas_slot_task_free(hisi_hba, task, abort_slot); |
da7b66e7 | 174 | spin_unlock_irqrestore(&hisi_hba->lock, flags); |
cac9b2a2 JG |
175 | if (task->task_done) |
176 | task->task_done(task); | |
cac9b2a2 JG |
177 | } |
178 | ||
42e7a693 JG |
179 | static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba, |
180 | int is_tmf, struct hisi_sas_tmf_task *tmf, | |
181 | int *pass) | |
182 | { | |
183 | struct domain_device *device = task->dev; | |
184 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
185 | struct hisi_sas_port *port; | |
186 | struct hisi_sas_slot *slot; | |
187 | struct hisi_sas_cmd_hdr *cmd_hdr_base; | |
2e244f0f | 188 | struct asd_sas_port *sas_port = device->port; |
42e7a693 JG |
189 | struct device *dev = &hisi_hba->pdev->dev; |
190 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; | |
191 | ||
2e244f0f | 192 | if (!sas_port) { |
42e7a693 JG |
193 | struct task_status_struct *ts = &task->task_status; |
194 | ||
195 | ts->resp = SAS_TASK_UNDELIVERED; | |
196 | ts->stat = SAS_PHY_DOWN; | |
197 | /* | |
198 | * libsas will use dev->port, should | |
199 | * not call task_done for sata | |
200 | */ | |
201 | if (device->dev_type != SAS_SATA_DEV) | |
202 | task->task_done(task); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | if (DEV_IS_GONE(sas_dev)) { | |
207 | if (sas_dev) | |
208 | dev_info(dev, "task prep: device %llu not ready\n", | |
209 | sas_dev->device_id); | |
210 | else | |
211 | dev_info(dev, "task prep: device %016llx not ready\n", | |
212 | SAS_ADDR(device->sas_addr)); | |
213 | ||
214 | rc = SAS_PHY_DOWN; | |
215 | return rc; | |
216 | } | |
2e244f0f JG |
217 | |
218 | port = to_hisi_sas_port(sas_port); | |
9859f24e | 219 | if (port && !port->port_attached) { |
09fe9ecb JG |
220 | dev_info(dev, "task prep: %s port%d not attach device\n", |
221 | (sas_protocol_ata(task->task_proto)) ? | |
222 | "SATA/STP" : "SAS", | |
223 | device->port->id); | |
224 | ||
225 | return SAS_PHY_DOWN; | |
42e7a693 JG |
226 | } |
227 | ||
228 | if (!sas_protocol_ata(task->task_proto)) { | |
229 | if (task->num_scatter) { | |
230 | n_elem = dma_map_sg(dev, task->scatter, | |
231 | task->num_scatter, task->data_dir); | |
232 | if (!n_elem) { | |
233 | rc = -ENOMEM; | |
234 | goto prep_out; | |
235 | } | |
236 | } | |
237 | } else | |
238 | n_elem = task->num_scatter; | |
239 | ||
685b6d6e JG |
240 | if (hisi_hba->hw->slot_index_alloc) |
241 | rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx, | |
242 | device); | |
243 | else | |
244 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); | |
42e7a693 JG |
245 | if (rc) |
246 | goto err_out; | |
c70f1fb7 XC |
247 | rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id, |
248 | &dlvry_queue, &dlvry_queue_slot); | |
42e7a693 JG |
249 | if (rc) |
250 | goto err_out_tag; | |
251 | ||
252 | slot = &hisi_hba->slot_info[slot_idx]; | |
253 | memset(slot, 0, sizeof(struct hisi_sas_slot)); | |
254 | ||
255 | slot->idx = slot_idx; | |
256 | slot->n_elem = n_elem; | |
257 | slot->dlvry_queue = dlvry_queue; | |
258 | slot->dlvry_queue_slot = dlvry_queue_slot; | |
259 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; | |
260 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; | |
261 | slot->task = task; | |
262 | slot->port = port; | |
263 | task->lldd_task = slot; | |
cac9b2a2 | 264 | INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort); |
42e7a693 JG |
265 | |
266 | slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool, | |
267 | GFP_ATOMIC, | |
268 | &slot->status_buffer_dma); | |
9c9d18e7 DC |
269 | if (!slot->status_buffer) { |
270 | rc = -ENOMEM; | |
42e7a693 | 271 | goto err_out_slot_buf; |
9c9d18e7 | 272 | } |
42e7a693 JG |
273 | memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ); |
274 | ||
275 | slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool, | |
276 | GFP_ATOMIC, | |
277 | &slot->command_table_dma); | |
9c9d18e7 DC |
278 | if (!slot->command_table) { |
279 | rc = -ENOMEM; | |
42e7a693 | 280 | goto err_out_status_buf; |
9c9d18e7 | 281 | } |
42e7a693 JG |
282 | memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ); |
283 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); | |
284 | ||
285 | switch (task->task_proto) { | |
66ee999b JG |
286 | case SAS_PROTOCOL_SMP: |
287 | rc = hisi_sas_task_prep_smp(hisi_hba, slot); | |
288 | break; | |
42e7a693 JG |
289 | case SAS_PROTOCOL_SSP: |
290 | rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf); | |
291 | break; | |
292 | case SAS_PROTOCOL_SATA: | |
293 | case SAS_PROTOCOL_STP: | |
294 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: | |
6f2ff1a1 JG |
295 | rc = hisi_sas_task_prep_ata(hisi_hba, slot); |
296 | break; | |
42e7a693 JG |
297 | default: |
298 | dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", | |
299 | task->task_proto); | |
300 | rc = -EINVAL; | |
301 | break; | |
302 | } | |
303 | ||
304 | if (rc) { | |
305 | dev_err(dev, "task prep: rc = 0x%x\n", rc); | |
306 | if (slot->sge_page) | |
307 | goto err_out_sge; | |
308 | goto err_out_command_table; | |
309 | } | |
310 | ||
311 | list_add_tail(&slot->entry, &port->list); | |
312 | spin_lock(&task->task_state_lock); | |
313 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
314 | spin_unlock(&task->task_state_lock); | |
315 | ||
316 | hisi_hba->slot_prep = slot; | |
317 | ||
f696cc32 | 318 | atomic64_inc(&sas_dev->running_req); |
42e7a693 JG |
319 | ++(*pass); |
320 | ||
9c9d18e7 | 321 | return 0; |
42e7a693 JG |
322 | |
323 | err_out_sge: | |
324 | dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, | |
325 | slot->sge_page_dma); | |
326 | err_out_command_table: | |
327 | dma_pool_free(hisi_hba->command_table_pool, slot->command_table, | |
328 | slot->command_table_dma); | |
329 | err_out_status_buf: | |
330 | dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer, | |
331 | slot->status_buffer_dma); | |
332 | err_out_slot_buf: | |
333 | /* Nothing to be done */ | |
334 | err_out_tag: | |
335 | hisi_sas_slot_index_free(hisi_hba, slot_idx); | |
336 | err_out: | |
337 | dev_err(dev, "task prep: failed[%d]!\n", rc); | |
338 | if (!sas_protocol_ata(task->task_proto)) | |
339 | if (n_elem) | |
340 | dma_unmap_sg(dev, task->scatter, n_elem, | |
341 | task->data_dir); | |
342 | prep_out: | |
343 | return rc; | |
344 | } | |
345 | ||
346 | static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, | |
347 | int is_tmf, struct hisi_sas_tmf_task *tmf) | |
348 | { | |
349 | u32 rc; | |
350 | u32 pass = 0; | |
351 | unsigned long flags; | |
352 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
353 | struct device *dev = &hisi_hba->pdev->dev; | |
354 | ||
06ec0fb9 XC |
355 | if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))) |
356 | return -EINVAL; | |
357 | ||
42e7a693 JG |
358 | /* protect task_prep and start_delivery sequence */ |
359 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
360 | rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass); | |
361 | if (rc) | |
362 | dev_err(dev, "task exec: failed[%d]!\n", rc); | |
363 | ||
364 | if (likely(pass)) | |
365 | hisi_hba->hw->start_delivery(hisi_hba); | |
366 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
367 | ||
368 | return rc; | |
369 | } | |
257efd1f | 370 | |
66139921 JG |
371 | static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no) |
372 | { | |
373 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
374 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
375 | struct sas_ha_struct *sas_ha; | |
376 | ||
377 | if (!phy->phy_attached) | |
378 | return; | |
379 | ||
380 | sas_ha = &hisi_hba->sha; | |
381 | sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); | |
382 | ||
383 | if (sas_phy->phy) { | |
384 | struct sas_phy *sphy = sas_phy->phy; | |
385 | ||
386 | sphy->negotiated_linkrate = sas_phy->linkrate; | |
66139921 | 387 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; |
2ae75787 XC |
388 | sphy->maximum_linkrate_hw = |
389 | hisi_hba->hw->phy_get_max_linkrate(); | |
390 | if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) | |
391 | sphy->minimum_linkrate = phy->minimum_linkrate; | |
392 | ||
393 | if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) | |
394 | sphy->maximum_linkrate = phy->maximum_linkrate; | |
66139921 JG |
395 | } |
396 | ||
397 | if (phy->phy_type & PORT_TYPE_SAS) { | |
398 | struct sas_identify_frame *id; | |
399 | ||
400 | id = (struct sas_identify_frame *)phy->frame_rcvd; | |
401 | id->dev_type = phy->identify.device_type; | |
402 | id->initiator_bits = SAS_PROTOCOL_ALL; | |
403 | id->target_bits = phy->identify.target_port_protocols; | |
404 | } else if (phy->phy_type & PORT_TYPE_SATA) { | |
405 | /*Nothing*/ | |
406 | } | |
407 | ||
408 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; | |
409 | sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); | |
410 | } | |
411 | ||
abda97c2 JG |
412 | static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) |
413 | { | |
414 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
415 | struct hisi_sas_device *sas_dev = NULL; | |
416 | int i; | |
417 | ||
418 | spin_lock(&hisi_hba->lock); | |
419 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { | |
420 | if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { | |
421 | hisi_hba->devices[i].device_id = i; | |
422 | sas_dev = &hisi_hba->devices[i]; | |
423 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
424 | sas_dev->dev_type = device->dev_type; | |
425 | sas_dev->hisi_hba = hisi_hba; | |
426 | sas_dev->sas_device = device; | |
427 | break; | |
428 | } | |
429 | } | |
430 | spin_unlock(&hisi_hba->lock); | |
431 | ||
432 | return sas_dev; | |
433 | } | |
434 | ||
435 | static int hisi_sas_dev_found(struct domain_device *device) | |
436 | { | |
437 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
438 | struct domain_device *parent_dev = device->parent; | |
439 | struct hisi_sas_device *sas_dev; | |
440 | struct device *dev = &hisi_hba->pdev->dev; | |
441 | ||
685b6d6e JG |
442 | if (hisi_hba->hw->alloc_dev) |
443 | sas_dev = hisi_hba->hw->alloc_dev(device); | |
444 | else | |
445 | sas_dev = hisi_sas_alloc_dev(device); | |
abda97c2 JG |
446 | if (!sas_dev) { |
447 | dev_err(dev, "fail alloc dev: max support %d devices\n", | |
448 | HISI_SAS_MAX_DEVICES); | |
449 | return -EINVAL; | |
450 | } | |
451 | ||
452 | device->lldd_dev = sas_dev; | |
453 | hisi_hba->hw->setup_itct(hisi_hba, sas_dev); | |
454 | ||
455 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { | |
456 | int phy_no; | |
457 | u8 phy_num = parent_dev->ex_dev.num_phys; | |
458 | struct ex_phy *phy; | |
459 | ||
460 | for (phy_no = 0; phy_no < phy_num; phy_no++) { | |
461 | phy = &parent_dev->ex_dev.ex_phy[phy_no]; | |
462 | if (SAS_ADDR(phy->attached_sas_addr) == | |
463 | SAS_ADDR(device->sas_addr)) { | |
464 | sas_dev->attached_phy = phy_no; | |
465 | break; | |
466 | } | |
467 | } | |
468 | ||
469 | if (phy_no == phy_num) { | |
470 | dev_info(dev, "dev found: no attached " | |
471 | "dev:%016llx at ex:%016llx\n", | |
472 | SAS_ADDR(device->sas_addr), | |
473 | SAS_ADDR(parent_dev->sas_addr)); | |
474 | return -EINVAL; | |
475 | } | |
476 | } | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
31eec8a6 JG |
481 | static int hisi_sas_slave_configure(struct scsi_device *sdev) |
482 | { | |
483 | struct domain_device *dev = sdev_to_domain_dev(sdev); | |
484 | int ret = sas_slave_configure(sdev); | |
485 | ||
486 | if (ret) | |
487 | return ret; | |
488 | if (!dev_is_sata(dev)) | |
489 | sas_change_queue_depth(sdev, 64); | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
701f75ec JG |
494 | static void hisi_sas_scan_start(struct Scsi_Host *shost) |
495 | { | |
496 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
701f75ec | 497 | |
396b8044 | 498 | hisi_hba->hw->phys_init(hisi_hba); |
701f75ec JG |
499 | } |
500 | ||
501 | static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
502 | { | |
503 | struct hisi_hba *hisi_hba = shost_priv(shost); | |
504 | struct sas_ha_struct *sha = &hisi_hba->sha; | |
505 | ||
396b8044 JG |
506 | /* Wait for PHY up interrupt to occur */ |
507 | if (time < HZ) | |
701f75ec JG |
508 | return 0; |
509 | ||
510 | sas_drain_work(sha); | |
511 | return 1; | |
512 | } | |
513 | ||
66139921 JG |
514 | static void hisi_sas_phyup_work(struct work_struct *work) |
515 | { | |
516 | struct hisi_sas_phy *phy = | |
517 | container_of(work, struct hisi_sas_phy, phyup_ws); | |
518 | struct hisi_hba *hisi_hba = phy->hisi_hba; | |
519 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
520 | int phy_no = sas_phy->id; | |
521 | ||
522 | hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ | |
523 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
524 | } | |
976867e6 JG |
525 | |
526 | static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) | |
527 | { | |
528 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
529 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
530 | ||
531 | phy->hisi_hba = hisi_hba; | |
532 | phy->port = NULL; | |
533 | init_timer(&phy->timer); | |
534 | sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; | |
535 | sas_phy->class = SAS; | |
536 | sas_phy->iproto = SAS_PROTOCOL_ALL; | |
537 | sas_phy->tproto = 0; | |
538 | sas_phy->type = PHY_TYPE_PHYSICAL; | |
539 | sas_phy->role = PHY_ROLE_INITIATOR; | |
540 | sas_phy->oob_mode = OOB_NOT_CONNECTED; | |
541 | sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; | |
542 | sas_phy->id = phy_no; | |
543 | sas_phy->sas_addr = &hisi_hba->sas_addr[0]; | |
544 | sas_phy->frame_rcvd = &phy->frame_rcvd[0]; | |
545 | sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; | |
546 | sas_phy->lldd_phy = phy; | |
66139921 JG |
547 | |
548 | INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work); | |
976867e6 JG |
549 | } |
550 | ||
184a4635 JG |
551 | static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) |
552 | { | |
553 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
554 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
555 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
556 | struct asd_sas_port *sas_port = sas_phy->port; | |
2e244f0f | 557 | struct hisi_sas_port *port = to_hisi_sas_port(sas_port); |
184a4635 JG |
558 | unsigned long flags; |
559 | ||
560 | if (!sas_port) | |
561 | return; | |
562 | ||
563 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
564 | port->port_attached = 1; | |
565 | port->id = phy->port_id; | |
566 | phy->port = port; | |
567 | sas_port->lldd_port = port; | |
568 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
569 | } | |
570 | ||
571 | static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no, | |
572 | struct domain_device *device) | |
573 | { | |
574 | struct hisi_sas_phy *phy; | |
575 | struct hisi_sas_port *port; | |
576 | struct hisi_sas_slot *slot, *slot2; | |
577 | struct device *dev = &hisi_hba->pdev->dev; | |
578 | ||
579 | phy = &hisi_hba->phy[phy_no]; | |
580 | port = phy->port; | |
581 | if (!port) | |
582 | return; | |
583 | ||
584 | list_for_each_entry_safe(slot, slot2, &port->list, entry) { | |
585 | struct sas_task *task; | |
586 | ||
587 | task = slot->task; | |
588 | if (device && task->dev != device) | |
589 | continue; | |
590 | ||
591 | dev_info(dev, "Release slot [%d:%d], task [%p]:\n", | |
592 | slot->dlvry_queue, slot->dlvry_queue_slot, task); | |
593 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
594 | } | |
595 | } | |
596 | ||
597 | static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy) | |
598 | { | |
599 | struct domain_device *device; | |
600 | struct hisi_sas_phy *phy = sas_phy->lldd_phy; | |
601 | struct asd_sas_port *sas_port = sas_phy->port; | |
602 | ||
603 | list_for_each_entry(device, &sas_port->dev_list, dev_list_node) | |
604 | hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device); | |
605 | } | |
606 | ||
607 | static void hisi_sas_release_task(struct hisi_hba *hisi_hba, | |
608 | struct domain_device *device) | |
609 | { | |
610 | struct asd_sas_port *port = device->port; | |
611 | struct asd_sas_phy *sas_phy; | |
612 | ||
613 | list_for_each_entry(sas_phy, &port->phy_list, port_phy_el) | |
614 | hisi_sas_do_release_task(hisi_hba, sas_phy->id, device); | |
615 | } | |
616 | ||
06ec0fb9 XC |
617 | static void hisi_sas_release_tasks(struct hisi_hba *hisi_hba) |
618 | { | |
619 | int i; | |
620 | ||
621 | for (i = 0; i < HISI_SAS_MAX_PHYS; i++) { | |
622 | struct hisi_sas_phy *phy = &hisi_hba->phy[i]; | |
623 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
624 | ||
625 | if (!sas_phy->port) | |
626 | continue; | |
627 | hisi_sas_port_notify_deformed(sas_phy); | |
628 | } | |
629 | } | |
630 | ||
abda97c2 JG |
631 | static void hisi_sas_dev_gone(struct domain_device *device) |
632 | { | |
633 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
634 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
635 | struct device *dev = &hisi_hba->pdev->dev; | |
636 | u64 dev_id = sas_dev->device_id; | |
637 | ||
638 | dev_info(dev, "found dev[%lld:%x] is gone\n", | |
639 | sas_dev->device_id, sas_dev->dev_type); | |
640 | ||
40f2702b JG |
641 | hisi_sas_internal_task_abort(hisi_hba, device, |
642 | HISI_SAS_INT_ABT_DEV, 0); | |
643 | ||
abda97c2 JG |
644 | hisi_hba->hw->free_device(hisi_hba, sas_dev); |
645 | device->lldd_dev = NULL; | |
646 | memset(sas_dev, 0, sizeof(*sas_dev)); | |
647 | sas_dev->device_id = dev_id; | |
648 | sas_dev->dev_type = SAS_PHY_UNUSED; | |
649 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
650 | } | |
42e7a693 JG |
651 | |
652 | static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) | |
653 | { | |
654 | return hisi_sas_task_exec(task, gfp_flags, 0, NULL); | |
655 | } | |
656 | ||
e4189d53 JG |
657 | static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, |
658 | void *funcdata) | |
659 | { | |
660 | struct sas_ha_struct *sas_ha = sas_phy->ha; | |
661 | struct hisi_hba *hisi_hba = sas_ha->lldd_ha; | |
662 | int phy_no = sas_phy->id; | |
663 | ||
664 | switch (func) { | |
665 | case PHY_FUNC_HARD_RESET: | |
666 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
667 | break; | |
668 | ||
669 | case PHY_FUNC_LINK_RESET: | |
670 | hisi_hba->hw->phy_enable(hisi_hba, phy_no); | |
671 | hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); | |
672 | break; | |
673 | ||
674 | case PHY_FUNC_DISABLE: | |
675 | hisi_hba->hw->phy_disable(hisi_hba, phy_no); | |
676 | break; | |
677 | ||
678 | case PHY_FUNC_SET_LINK_RATE: | |
2ae75787 XC |
679 | hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata); |
680 | break; | |
681 | ||
e4189d53 JG |
682 | case PHY_FUNC_RELEASE_SPINUP_HOLD: |
683 | default: | |
684 | return -EOPNOTSUPP; | |
685 | } | |
686 | return 0; | |
687 | } | |
184a4635 | 688 | |
0efff300 JG |
689 | static void hisi_sas_task_done(struct sas_task *task) |
690 | { | |
691 | if (!del_timer(&task->slow_task->timer)) | |
692 | return; | |
693 | complete(&task->slow_task->completion); | |
694 | } | |
695 | ||
696 | static void hisi_sas_tmf_timedout(unsigned long data) | |
697 | { | |
698 | struct sas_task *task = (struct sas_task *)data; | |
699 | ||
700 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
701 | complete(&task->slow_task->completion); | |
702 | } | |
703 | ||
704 | #define TASK_TIMEOUT 20 | |
705 | #define TASK_RETRY 3 | |
706 | static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, | |
707 | void *parameter, u32 para_len, | |
708 | struct hisi_sas_tmf_task *tmf) | |
709 | { | |
710 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
711 | struct hisi_hba *hisi_hba = sas_dev->hisi_hba; | |
712 | struct device *dev = &hisi_hba->pdev->dev; | |
713 | struct sas_task *task; | |
714 | int res, retry; | |
715 | ||
716 | for (retry = 0; retry < TASK_RETRY; retry++) { | |
717 | task = sas_alloc_slow_task(GFP_KERNEL); | |
718 | if (!task) | |
719 | return -ENOMEM; | |
720 | ||
721 | task->dev = device; | |
722 | task->task_proto = device->tproto; | |
723 | ||
7c594f04 XC |
724 | if (dev_is_sata(device)) { |
725 | task->ata_task.device_control_reg_update = 1; | |
726 | memcpy(&task->ata_task.fis, parameter, para_len); | |
727 | } else { | |
728 | memcpy(&task->ssp_task, parameter, para_len); | |
729 | } | |
0efff300 JG |
730 | task->task_done = hisi_sas_task_done; |
731 | ||
732 | task->slow_task->timer.data = (unsigned long) task; | |
733 | task->slow_task->timer.function = hisi_sas_tmf_timedout; | |
734 | task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; | |
735 | add_timer(&task->slow_task->timer); | |
736 | ||
737 | res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); | |
738 | ||
739 | if (res) { | |
740 | del_timer(&task->slow_task->timer); | |
741 | dev_err(dev, "abort tmf: executing internal task failed: %d\n", | |
742 | res); | |
743 | goto ex_err; | |
744 | } | |
745 | ||
746 | wait_for_completion(&task->slow_task->completion); | |
747 | res = TMF_RESP_FUNC_FAILED; | |
748 | /* Even TMF timed out, return direct. */ | |
749 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
750 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
7c594f04 | 751 | dev_err(dev, "abort tmf: TMF task timeout\n"); |
0efff300 JG |
752 | if (task->lldd_task) { |
753 | struct hisi_sas_slot *slot = | |
754 | task->lldd_task; | |
755 | ||
756 | hisi_sas_slot_task_free(hisi_hba, | |
757 | task, slot); | |
758 | } | |
759 | ||
760 | goto ex_err; | |
761 | } | |
762 | } | |
763 | ||
764 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
1af1b808 | 765 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { |
0efff300 JG |
766 | res = TMF_RESP_FUNC_COMPLETE; |
767 | break; | |
768 | } | |
769 | ||
4ffde482 JG |
770 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
771 | task->task_status.stat == TMF_RESP_FUNC_SUCC) { | |
772 | res = TMF_RESP_FUNC_SUCC; | |
773 | break; | |
774 | } | |
775 | ||
0efff300 JG |
776 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
777 | task->task_status.stat == SAS_DATA_UNDERRUN) { | |
778 | /* no error, but return the number of bytes of | |
779 | * underrun | |
780 | */ | |
781 | dev_warn(dev, "abort tmf: task to dev %016llx " | |
782 | "resp: 0x%x sts 0x%x underrun\n", | |
783 | SAS_ADDR(device->sas_addr), | |
784 | task->task_status.resp, | |
785 | task->task_status.stat); | |
786 | res = task->task_status.residual; | |
787 | break; | |
788 | } | |
789 | ||
790 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
791 | task->task_status.stat == SAS_DATA_OVERRUN) { | |
792 | dev_warn(dev, "abort tmf: blocked task error\n"); | |
793 | res = -EMSGSIZE; | |
794 | break; | |
795 | } | |
796 | ||
797 | dev_warn(dev, "abort tmf: task to dev " | |
798 | "%016llx resp: 0x%x status 0x%x\n", | |
799 | SAS_ADDR(device->sas_addr), task->task_status.resp, | |
800 | task->task_status.stat); | |
801 | sas_free_task(task); | |
802 | task = NULL; | |
803 | } | |
804 | ex_err: | |
d2d7e7a0 XC |
805 | if (retry == TASK_RETRY) |
806 | dev_warn(dev, "abort tmf: executing internal task failed!\n"); | |
0efff300 JG |
807 | sas_free_task(task); |
808 | return res; | |
809 | } | |
810 | ||
7c594f04 XC |
811 | static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev, |
812 | bool reset, int pmp, u8 *fis) | |
813 | { | |
814 | struct ata_taskfile tf; | |
815 | ||
816 | ata_tf_init(dev, &tf); | |
817 | if (reset) | |
818 | tf.ctl |= ATA_SRST; | |
819 | else | |
820 | tf.ctl &= ~ATA_SRST; | |
821 | tf.command = ATA_CMD_DEV_RESET; | |
822 | ata_tf_to_fis(&tf, pmp, 0, fis); | |
823 | } | |
824 | ||
825 | static int hisi_sas_softreset_ata_disk(struct domain_device *device) | |
826 | { | |
827 | u8 fis[20] = {0}; | |
828 | struct ata_port *ap = device->sata_dev.ap; | |
829 | struct ata_link *link; | |
830 | int rc = TMF_RESP_FUNC_FAILED; | |
831 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
832 | struct device *dev = &hisi_hba->pdev->dev; | |
833 | int s = sizeof(struct host_to_dev_fis); | |
834 | unsigned long flags; | |
835 | ||
836 | ata_for_each_link(link, ap, EDGE) { | |
837 | int pmp = sata_srst_pmp(link); | |
838 | ||
839 | hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); | |
840 | rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL); | |
841 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
842 | break; | |
843 | } | |
844 | ||
845 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
846 | ata_for_each_link(link, ap, EDGE) { | |
847 | int pmp = sata_srst_pmp(link); | |
848 | ||
849 | hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis); | |
850 | rc = hisi_sas_exec_internal_tmf_task(device, fis, | |
851 | s, NULL); | |
852 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
853 | dev_err(dev, "ata disk de-reset failed\n"); | |
854 | } | |
855 | } else { | |
856 | dev_err(dev, "ata disk reset failed\n"); | |
857 | } | |
858 | ||
859 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
860 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
861 | hisi_sas_release_task(hisi_hba, device); | |
862 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
863 | } | |
864 | ||
865 | return rc; | |
866 | } | |
867 | ||
0efff300 JG |
868 | static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, |
869 | u8 *lun, struct hisi_sas_tmf_task *tmf) | |
870 | { | |
871 | struct sas_ssp_task ssp_task; | |
872 | ||
873 | if (!(device->tproto & SAS_PROTOCOL_SSP)) | |
874 | return TMF_RESP_FUNC_ESUPP; | |
875 | ||
876 | memcpy(ssp_task.LUN, lun, 8); | |
877 | ||
878 | return hisi_sas_exec_internal_tmf_task(device, &ssp_task, | |
879 | sizeof(ssp_task), tmf); | |
880 | } | |
881 | ||
06ec0fb9 XC |
882 | static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba) |
883 | { | |
884 | int rc; | |
885 | ||
886 | if (!hisi_hba->hw->soft_reset) | |
887 | return -1; | |
888 | ||
889 | if (!test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) { | |
890 | struct device *dev = &hisi_hba->pdev->dev; | |
891 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; | |
892 | unsigned long flags; | |
893 | ||
894 | dev_dbg(dev, "controller reset begins!\n"); | |
895 | scsi_block_requests(hisi_hba->shost); | |
896 | rc = hisi_hba->hw->soft_reset(hisi_hba); | |
897 | if (rc) { | |
898 | dev_warn(dev, "controller reset failed (%d)\n", rc); | |
899 | goto out; | |
900 | } | |
901 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
902 | hisi_sas_release_tasks(hisi_hba); | |
903 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
904 | ||
905 | sas_ha->notify_ha_event(sas_ha, HAE_RESET); | |
906 | dev_dbg(dev, "controller reset successful!\n"); | |
907 | } else | |
908 | return -1; | |
909 | ||
910 | out: | |
911 | scsi_unblock_requests(hisi_hba->shost); | |
912 | clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags); | |
913 | return rc; | |
914 | } | |
915 | ||
0efff300 JG |
916 | static int hisi_sas_abort_task(struct sas_task *task) |
917 | { | |
918 | struct scsi_lun lun; | |
919 | struct hisi_sas_tmf_task tmf_task; | |
920 | struct domain_device *device = task->dev; | |
921 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
922 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); | |
923 | struct device *dev = &hisi_hba->pdev->dev; | |
924 | int rc = TMF_RESP_FUNC_FAILED; | |
925 | unsigned long flags; | |
926 | ||
927 | if (!sas_dev) { | |
928 | dev_warn(dev, "Device has been removed\n"); | |
929 | return TMF_RESP_FUNC_FAILED; | |
930 | } | |
931 | ||
932 | spin_lock_irqsave(&task->task_state_lock, flags); | |
933 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
934 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
935 | rc = TMF_RESP_FUNC_COMPLETE; | |
936 | goto out; | |
937 | } | |
938 | ||
939 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
940 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
941 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
942 | struct scsi_cmnd *cmnd = task->uldd_task; | |
943 | struct hisi_sas_slot *slot = task->lldd_task; | |
944 | u32 tag = slot->idx; | |
945 | ||
946 | int_to_scsilun(cmnd->device->lun, &lun); | |
947 | tmf_task.tmf = TMF_ABORT_TASK; | |
948 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
949 | ||
950 | rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, | |
951 | &tmf_task); | |
952 | ||
953 | /* if successful, clear the task and callback forwards.*/ | |
954 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
955 | if (task->lldd_task) { | |
956 | struct hisi_sas_slot *slot; | |
957 | ||
958 | slot = &hisi_hba->slot_info | |
959 | [tmf_task.tag_of_task_to_be_managed]; | |
960 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
961 | hisi_hba->hw->slot_complete(hisi_hba, slot, 1); | |
962 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
963 | } | |
964 | } | |
965 | ||
dc8a49ca JG |
966 | hisi_sas_internal_task_abort(hisi_hba, device, |
967 | HISI_SAS_INT_ABT_CMD, tag); | |
0efff300 JG |
968 | } else if (task->task_proto & SAS_PROTOCOL_SATA || |
969 | task->task_proto & SAS_PROTOCOL_STP) { | |
970 | if (task->dev->dev_type == SAS_SATA_DEV) { | |
dc8a49ca JG |
971 | hisi_sas_internal_task_abort(hisi_hba, device, |
972 | HISI_SAS_INT_ABT_DEV, 0); | |
7c594f04 | 973 | rc = hisi_sas_softreset_ata_disk(device); |
0efff300 | 974 | } |
dc8a49ca JG |
975 | } else if (task->task_proto & SAS_PROTOCOL_SMP) { |
976 | /* SMP */ | |
977 | struct hisi_sas_slot *slot = task->lldd_task; | |
978 | u32 tag = slot->idx; | |
0efff300 | 979 | |
dc8a49ca JG |
980 | hisi_sas_internal_task_abort(hisi_hba, device, |
981 | HISI_SAS_INT_ABT_CMD, tag); | |
0efff300 JG |
982 | } |
983 | ||
984 | out: | |
985 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
986 | dev_notice(dev, "abort task: rc=%d\n", rc); | |
987 | return rc; | |
988 | } | |
989 | ||
990 | static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) | |
991 | { | |
992 | struct hisi_sas_tmf_task tmf_task; | |
993 | int rc = TMF_RESP_FUNC_FAILED; | |
994 | ||
995 | tmf_task.tmf = TMF_ABORT_TASK_SET; | |
996 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
997 | ||
998 | return rc; | |
999 | } | |
1000 | ||
1001 | static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) | |
1002 | { | |
1003 | int rc = TMF_RESP_FUNC_FAILED; | |
1004 | struct hisi_sas_tmf_task tmf_task; | |
1005 | ||
1006 | tmf_task.tmf = TMF_CLEAR_ACA; | |
1007 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
1008 | ||
1009 | return rc; | |
1010 | } | |
1011 | ||
1012 | static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) | |
1013 | { | |
1014 | struct sas_phy *phy = sas_get_local_phy(device); | |
1015 | int rc, reset_type = (device->dev_type == SAS_SATA_DEV || | |
1016 | (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; | |
1017 | rc = sas_phy_reset(phy, reset_type); | |
1018 | sas_put_local_phy(phy); | |
1019 | msleep(2000); | |
1020 | return rc; | |
1021 | } | |
1022 | ||
1023 | static int hisi_sas_I_T_nexus_reset(struct domain_device *device) | |
1024 | { | |
1025 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
1026 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
1027 | unsigned long flags; | |
1028 | int rc = TMF_RESP_FUNC_FAILED; | |
1029 | ||
1030 | if (sas_dev->dev_status != HISI_SAS_DEV_EH) | |
1031 | return TMF_RESP_FUNC_FAILED; | |
1032 | sas_dev->dev_status = HISI_SAS_DEV_NORMAL; | |
1033 | ||
1034 | rc = hisi_sas_debug_I_T_nexus_reset(device); | |
1035 | ||
1036 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
1037 | hisi_sas_release_task(hisi_hba, device); | |
1038 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) | |
1044 | { | |
1045 | struct hisi_sas_tmf_task tmf_task; | |
1046 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
1047 | struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); | |
1048 | struct device *dev = &hisi_hba->pdev->dev; | |
1049 | unsigned long flags; | |
1050 | int rc = TMF_RESP_FUNC_FAILED; | |
1051 | ||
1052 | tmf_task.tmf = TMF_LU_RESET; | |
1053 | sas_dev->dev_status = HISI_SAS_DEV_EH; | |
1054 | rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); | |
1055 | if (rc == TMF_RESP_FUNC_COMPLETE) { | |
1056 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
1057 | hisi_sas_release_task(hisi_hba, device); | |
1058 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
1059 | } | |
1060 | ||
1061 | /* If failed, fall-through I_T_Nexus reset */ | |
1062 | dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n", | |
1063 | sas_dev->device_id, rc); | |
1064 | return rc; | |
1065 | } | |
1066 | ||
1067 | static int hisi_sas_query_task(struct sas_task *task) | |
1068 | { | |
1069 | struct scsi_lun lun; | |
1070 | struct hisi_sas_tmf_task tmf_task; | |
1071 | int rc = TMF_RESP_FUNC_FAILED; | |
1072 | ||
1073 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { | |
1074 | struct scsi_cmnd *cmnd = task->uldd_task; | |
1075 | struct domain_device *device = task->dev; | |
1076 | struct hisi_sas_slot *slot = task->lldd_task; | |
1077 | u32 tag = slot->idx; | |
1078 | ||
1079 | int_to_scsilun(cmnd->device->lun, &lun); | |
1080 | tmf_task.tmf = TMF_QUERY_TASK; | |
1081 | tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); | |
1082 | ||
1083 | rc = hisi_sas_debug_issue_ssp_tmf(device, | |
1084 | lun.scsi_lun, | |
1085 | &tmf_task); | |
1086 | switch (rc) { | |
1087 | /* The task is still in Lun, release it then */ | |
1088 | case TMF_RESP_FUNC_SUCC: | |
1089 | /* The task is not in Lun or failed, reset the phy */ | |
1090 | case TMF_RESP_FUNC_FAILED: | |
1091 | case TMF_RESP_FUNC_COMPLETE: | |
1092 | break; | |
997ee43c XC |
1093 | default: |
1094 | rc = TMF_RESP_FUNC_FAILED; | |
1095 | break; | |
0efff300 JG |
1096 | } |
1097 | } | |
1098 | return rc; | |
1099 | } | |
1100 | ||
441c2740 JG |
1101 | static int |
1102 | hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, u64 device_id, | |
1103 | struct sas_task *task, int abort_flag, | |
1104 | int task_tag) | |
1105 | { | |
1106 | struct domain_device *device = task->dev; | |
1107 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
1108 | struct device *dev = &hisi_hba->pdev->dev; | |
1109 | struct hisi_sas_port *port; | |
1110 | struct hisi_sas_slot *slot; | |
2e244f0f | 1111 | struct asd_sas_port *sas_port = device->port; |
441c2740 JG |
1112 | struct hisi_sas_cmd_hdr *cmd_hdr_base; |
1113 | int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; | |
1114 | ||
06ec0fb9 XC |
1115 | if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))) |
1116 | return -EINVAL; | |
1117 | ||
441c2740 JG |
1118 | if (!device->port) |
1119 | return -1; | |
1120 | ||
2e244f0f | 1121 | port = to_hisi_sas_port(sas_port); |
441c2740 JG |
1122 | |
1123 | /* simply get a slot and send abort command */ | |
1124 | rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx); | |
1125 | if (rc) | |
1126 | goto err_out; | |
c70f1fb7 XC |
1127 | rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id, |
1128 | &dlvry_queue, &dlvry_queue_slot); | |
441c2740 JG |
1129 | if (rc) |
1130 | goto err_out_tag; | |
1131 | ||
1132 | slot = &hisi_hba->slot_info[slot_idx]; | |
1133 | memset(slot, 0, sizeof(struct hisi_sas_slot)); | |
1134 | ||
1135 | slot->idx = slot_idx; | |
1136 | slot->n_elem = n_elem; | |
1137 | slot->dlvry_queue = dlvry_queue; | |
1138 | slot->dlvry_queue_slot = dlvry_queue_slot; | |
1139 | cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; | |
1140 | slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; | |
1141 | slot->task = task; | |
1142 | slot->port = port; | |
1143 | task->lldd_task = slot; | |
1144 | ||
1145 | memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); | |
1146 | ||
1147 | rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id, | |
1148 | abort_flag, task_tag); | |
1149 | if (rc) | |
1150 | goto err_out_tag; | |
1151 | ||
1152 | /* Port structure is static for the HBA, so | |
1153 | * even if the port is deformed it is ok | |
1154 | * to reference. | |
1155 | */ | |
1156 | list_add_tail(&slot->entry, &port->list); | |
1157 | spin_lock(&task->task_state_lock); | |
1158 | task->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
1159 | spin_unlock(&task->task_state_lock); | |
1160 | ||
1161 | hisi_hba->slot_prep = slot; | |
1162 | ||
f696cc32 JG |
1163 | atomic64_inc(&sas_dev->running_req); |
1164 | ||
441c2740 JG |
1165 | /* send abort command to our chip */ |
1166 | hisi_hba->hw->start_delivery(hisi_hba); | |
1167 | ||
1168 | return 0; | |
1169 | ||
1170 | err_out_tag: | |
1171 | hisi_sas_slot_index_free(hisi_hba, slot_idx); | |
1172 | err_out: | |
1173 | dev_err(dev, "internal abort task prep: failed[%d]!\n", rc); | |
1174 | ||
1175 | return rc; | |
1176 | } | |
1177 | ||
1178 | /** | |
1179 | * hisi_sas_internal_task_abort -- execute an internal | |
1180 | * abort command for single IO command or a device | |
1181 | * @hisi_hba: host controller struct | |
1182 | * @device: domain device | |
1183 | * @abort_flag: mode of operation, device or single IO | |
1184 | * @tag: tag of IO to be aborted (only relevant to single | |
1185 | * IO mode) | |
1186 | */ | |
1187 | static int | |
1188 | hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, | |
1189 | struct domain_device *device, | |
1190 | int abort_flag, int tag) | |
1191 | { | |
1192 | struct sas_task *task; | |
1193 | struct hisi_sas_device *sas_dev = device->lldd_dev; | |
1194 | struct device *dev = &hisi_hba->pdev->dev; | |
1195 | int res; | |
1196 | unsigned long flags; | |
1197 | ||
1198 | if (!hisi_hba->hw->prep_abort) | |
1199 | return -EOPNOTSUPP; | |
1200 | ||
1201 | task = sas_alloc_slow_task(GFP_KERNEL); | |
1202 | if (!task) | |
1203 | return -ENOMEM; | |
1204 | ||
1205 | task->dev = device; | |
1206 | task->task_proto = device->tproto; | |
1207 | task->task_done = hisi_sas_task_done; | |
1208 | task->slow_task->timer.data = (unsigned long)task; | |
1209 | task->slow_task->timer.function = hisi_sas_tmf_timedout; | |
1210 | task->slow_task->timer.expires = jiffies + 20*HZ; | |
1211 | add_timer(&task->slow_task->timer); | |
1212 | ||
1213 | /* Lock as we are alloc'ing a slot, which cannot be interrupted */ | |
1214 | spin_lock_irqsave(&hisi_hba->lock, flags); | |
1215 | res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id, | |
1216 | task, abort_flag, tag); | |
1217 | spin_unlock_irqrestore(&hisi_hba->lock, flags); | |
1218 | if (res) { | |
1219 | del_timer(&task->slow_task->timer); | |
1220 | dev_err(dev, "internal task abort: executing internal task failed: %d\n", | |
1221 | res); | |
1222 | goto exit; | |
1223 | } | |
1224 | wait_for_completion(&task->slow_task->completion); | |
1225 | res = TMF_RESP_FUNC_FAILED; | |
1226 | ||
1227 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
1228 | task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { | |
1229 | res = TMF_RESP_FUNC_COMPLETE; | |
1230 | goto exit; | |
1231 | } | |
1232 | ||
1233 | /* TMF timed out, return direct. */ | |
1234 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
1235 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
1236 | dev_err(dev, "internal task abort: timeout.\n"); | |
1237 | if (task->lldd_task) { | |
1238 | struct hisi_sas_slot *slot = task->lldd_task; | |
1239 | ||
1240 | hisi_sas_slot_task_free(hisi_hba, task, slot); | |
1241 | } | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | exit: | |
297d7302 | 1246 | dev_dbg(dev, "internal task abort: task to dev %016llx task=%p " |
441c2740 JG |
1247 | "resp: 0x%x sts 0x%x\n", |
1248 | SAS_ADDR(device->sas_addr), | |
1249 | task, | |
1250 | task->task_status.resp, /* 0 is complete, -1 is undelivered */ | |
1251 | task->task_status.stat); | |
1252 | sas_free_task(task); | |
1253 | ||
1254 | return res; | |
1255 | } | |
1256 | ||
184a4635 JG |
1257 | static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) |
1258 | { | |
1259 | hisi_sas_port_notify_formed(sas_phy); | |
1260 | } | |
1261 | ||
1262 | static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy) | |
1263 | { | |
1264 | hisi_sas_port_notify_deformed(sas_phy); | |
1265 | } | |
1266 | ||
1267 | static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) | |
1268 | { | |
1269 | phy->phy_attached = 0; | |
1270 | phy->phy_type = 0; | |
1271 | phy->port = NULL; | |
1272 | } | |
1273 | ||
1274 | void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) | |
1275 | { | |
1276 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
1277 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
1278 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; | |
1279 | ||
1280 | if (rdy) { | |
1281 | /* Phy down but ready */ | |
1282 | hisi_sas_bytes_dmaed(hisi_hba, phy_no); | |
1283 | hisi_sas_port_notify_formed(sas_phy); | |
1284 | } else { | |
1285 | struct hisi_sas_port *port = phy->port; | |
1286 | ||
1287 | /* Phy down and not ready */ | |
1288 | sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); | |
1289 | sas_phy_disconnected(sas_phy); | |
1290 | ||
1291 | if (port) { | |
1292 | if (phy->phy_type & PORT_TYPE_SAS) { | |
1293 | int port_id = port->id; | |
1294 | ||
1295 | if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, | |
1296 | port_id)) | |
1297 | port->port_attached = 0; | |
1298 | } else if (phy->phy_type & PORT_TYPE_SATA) | |
1299 | port->port_attached = 0; | |
1300 | } | |
1301 | hisi_sas_phy_disconnected(phy); | |
1302 | } | |
1303 | } | |
1304 | EXPORT_SYMBOL_GPL(hisi_sas_phy_down); | |
1305 | ||
06ec0fb9 XC |
1306 | void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state, |
1307 | u32 state) | |
1308 | { | |
1309 | struct sas_ha_struct *sas_ha = &hisi_hba->sha; | |
1310 | int phy_no; | |
1311 | ||
1312 | for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { | |
1313 | struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; | |
1314 | struct asd_sas_phy *sas_phy = &phy->sas_phy; | |
1315 | struct asd_sas_port *sas_port = sas_phy->port; | |
1316 | struct domain_device *dev; | |
1317 | ||
1318 | if (sas_phy->enabled) { | |
1319 | /* Report PHY state change to libsas */ | |
1320 | if (state & (1 << phy_no)) | |
1321 | continue; | |
1322 | ||
1323 | if (old_state & (1 << phy_no)) | |
1324 | /* PHY down but was up before */ | |
1325 | hisi_sas_phy_down(hisi_hba, phy_no, 0); | |
1326 | } | |
1327 | if (!sas_port) | |
1328 | continue; | |
1329 | dev = sas_port->port_dev; | |
1330 | ||
1331 | if (DEV_IS_EXPANDER(dev->dev_type)) | |
1332 | sas_ha->notify_phy_event(sas_phy, PORTE_BROADCAST_RCVD); | |
1333 | } | |
1334 | } | |
1335 | EXPORT_SYMBOL_GPL(hisi_sas_rescan_topology); | |
1336 | ||
e8899fad JG |
1337 | static struct scsi_transport_template *hisi_sas_stt; |
1338 | ||
7eb7869f JG |
1339 | static struct scsi_host_template hisi_sas_sht = { |
1340 | .module = THIS_MODULE, | |
1341 | .name = DRV_NAME, | |
1342 | .queuecommand = sas_queuecommand, | |
1343 | .target_alloc = sas_target_alloc, | |
31eec8a6 | 1344 | .slave_configure = hisi_sas_slave_configure, |
701f75ec JG |
1345 | .scan_finished = hisi_sas_scan_finished, |
1346 | .scan_start = hisi_sas_scan_start, | |
7eb7869f JG |
1347 | .change_queue_depth = sas_change_queue_depth, |
1348 | .bios_param = sas_bios_param, | |
1349 | .can_queue = 1, | |
1350 | .this_id = -1, | |
1351 | .sg_tablesize = SG_ALL, | |
1352 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, | |
1353 | .use_clustering = ENABLE_CLUSTERING, | |
1354 | .eh_device_reset_handler = sas_eh_device_reset_handler, | |
1355 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, | |
1356 | .target_destroy = sas_target_destroy, | |
1357 | .ioctl = sas_ioctl, | |
1358 | }; | |
1359 | ||
e8899fad | 1360 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
abda97c2 JG |
1361 | .lldd_dev_found = hisi_sas_dev_found, |
1362 | .lldd_dev_gone = hisi_sas_dev_gone, | |
42e7a693 | 1363 | .lldd_execute_task = hisi_sas_queue_command, |
e4189d53 | 1364 | .lldd_control_phy = hisi_sas_control_phy, |
0efff300 JG |
1365 | .lldd_abort_task = hisi_sas_abort_task, |
1366 | .lldd_abort_task_set = hisi_sas_abort_task_set, | |
1367 | .lldd_clear_aca = hisi_sas_clear_aca, | |
1368 | .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, | |
1369 | .lldd_lu_reset = hisi_sas_lu_reset, | |
1370 | .lldd_query_task = hisi_sas_query_task, | |
184a4635 JG |
1371 | .lldd_port_formed = hisi_sas_port_formed, |
1372 | .lldd_port_deformed = hisi_sas_port_deformed, | |
e8899fad JG |
1373 | }; |
1374 | ||
06ec0fb9 XC |
1375 | void hisi_sas_init_mem(struct hisi_hba *hisi_hba) |
1376 | { | |
1377 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; | |
1378 | ||
1379 | for (i = 0; i < hisi_hba->queue_count; i++) { | |
1380 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; | |
1381 | struct hisi_sas_dq *dq = &hisi_hba->dq[i]; | |
1382 | ||
1383 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1384 | memset(hisi_hba->cmd_hdr[i], 0, s); | |
1385 | dq->wr_point = 0; | |
1386 | ||
1387 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1388 | memset(hisi_hba->complete_hdr[i], 0, s); | |
1389 | cq->rd_point = 0; | |
1390 | } | |
1391 | ||
1392 | s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy; | |
1393 | memset(hisi_hba->initial_fis, 0, s); | |
1394 | ||
1395 | s = max_command_entries * sizeof(struct hisi_sas_iost); | |
1396 | memset(hisi_hba->iost, 0, s); | |
1397 | ||
1398 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); | |
1399 | memset(hisi_hba->breakpoint, 0, s); | |
1400 | ||
1401 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; | |
1402 | memset(hisi_hba->sata_breakpoint, 0, s); | |
1403 | } | |
1404 | EXPORT_SYMBOL_GPL(hisi_sas_init_mem); | |
1405 | ||
6be6de18 JG |
1406 | static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) |
1407 | { | |
6be6de18 JG |
1408 | struct platform_device *pdev = hisi_hba->pdev; |
1409 | struct device *dev = &pdev->dev; | |
a8d547bd | 1410 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
6be6de18 | 1411 | |
fa42d80d | 1412 | spin_lock_init(&hisi_hba->lock); |
976867e6 JG |
1413 | for (i = 0; i < hisi_hba->n_phy; i++) { |
1414 | hisi_sas_phy_init(hisi_hba, i); | |
1415 | hisi_hba->port[i].port_attached = 0; | |
1416 | hisi_hba->port[i].id = -1; | |
1417 | INIT_LIST_HEAD(&hisi_hba->port[i].list); | |
1418 | } | |
1419 | ||
af740dbe JG |
1420 | for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { |
1421 | hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; | |
1422 | hisi_hba->devices[i].device_id = i; | |
1423 | hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL; | |
1424 | } | |
1425 | ||
6be6de18 | 1426 | for (i = 0; i < hisi_hba->queue_count; i++) { |
9101a079 | 1427 | struct hisi_sas_cq *cq = &hisi_hba->cq[i]; |
4fde02ad | 1428 | struct hisi_sas_dq *dq = &hisi_hba->dq[i]; |
9101a079 JG |
1429 | |
1430 | /* Completion queue structure */ | |
1431 | cq->id = i; | |
1432 | cq->hisi_hba = hisi_hba; | |
1433 | ||
4fde02ad JG |
1434 | /* Delivery queue structure */ |
1435 | dq->id = i; | |
1436 | dq->hisi_hba = hisi_hba; | |
1437 | ||
6be6de18 JG |
1438 | /* Delivery queue */ |
1439 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1440 | hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s, | |
1441 | &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); | |
1442 | if (!hisi_hba->cmd_hdr[i]) | |
1443 | goto err_out; | |
6be6de18 JG |
1444 | |
1445 | /* Completion queue */ | |
1446 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1447 | hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s, | |
1448 | &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); | |
1449 | if (!hisi_hba->complete_hdr[i]) | |
1450 | goto err_out; | |
6be6de18 JG |
1451 | } |
1452 | ||
1453 | s = HISI_SAS_STATUS_BUF_SZ; | |
1454 | hisi_hba->status_buffer_pool = dma_pool_create("status_buffer", | |
1455 | dev, s, 16, 0); | |
1456 | if (!hisi_hba->status_buffer_pool) | |
1457 | goto err_out; | |
1458 | ||
1459 | s = HISI_SAS_COMMAND_TABLE_SZ; | |
1460 | hisi_hba->command_table_pool = dma_pool_create("command_table", | |
1461 | dev, s, 16, 0); | |
1462 | if (!hisi_hba->command_table_pool) | |
1463 | goto err_out; | |
1464 | ||
1465 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1466 | hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma, | |
1467 | GFP_KERNEL); | |
1468 | if (!hisi_hba->itct) | |
1469 | goto err_out; | |
1470 | ||
1471 | memset(hisi_hba->itct, 0, s); | |
1472 | ||
a8d547bd | 1473 | hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, |
6be6de18 JG |
1474 | sizeof(struct hisi_sas_slot), |
1475 | GFP_KERNEL); | |
1476 | if (!hisi_hba->slot_info) | |
1477 | goto err_out; | |
1478 | ||
a8d547bd | 1479 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
6be6de18 JG |
1480 | hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma, |
1481 | GFP_KERNEL); | |
1482 | if (!hisi_hba->iost) | |
1483 | goto err_out; | |
1484 | ||
a8d547bd | 1485 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
6be6de18 JG |
1486 | hisi_hba->breakpoint = dma_alloc_coherent(dev, s, |
1487 | &hisi_hba->breakpoint_dma, GFP_KERNEL); | |
1488 | if (!hisi_hba->breakpoint) | |
1489 | goto err_out; | |
1490 | ||
a8d547bd | 1491 | hisi_hba->slot_index_count = max_command_entries; |
433f5696 | 1492 | s = hisi_hba->slot_index_count / BITS_PER_BYTE; |
257efd1f JG |
1493 | hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); |
1494 | if (!hisi_hba->slot_index_tags) | |
1495 | goto err_out; | |
1496 | ||
6be6de18 JG |
1497 | hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev, |
1498 | sizeof(struct hisi_sas_sge_page), 16, 0); | |
1499 | if (!hisi_hba->sge_page_pool) | |
1500 | goto err_out; | |
1501 | ||
1502 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1503 | hisi_hba->initial_fis = dma_alloc_coherent(dev, s, | |
1504 | &hisi_hba->initial_fis_dma, GFP_KERNEL); | |
1505 | if (!hisi_hba->initial_fis) | |
1506 | goto err_out; | |
6be6de18 | 1507 | |
a8d547bd | 1508 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
6be6de18 JG |
1509 | hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s, |
1510 | &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); | |
1511 | if (!hisi_hba->sata_breakpoint) | |
1512 | goto err_out; | |
06ec0fb9 | 1513 | hisi_sas_init_mem(hisi_hba); |
6be6de18 | 1514 | |
257efd1f JG |
1515 | hisi_sas_slot_index_init(hisi_hba); |
1516 | ||
7e9080e1 JG |
1517 | hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); |
1518 | if (!hisi_hba->wq) { | |
1519 | dev_err(dev, "sas_alloc: failed to create workqueue\n"); | |
1520 | goto err_out; | |
1521 | } | |
1522 | ||
6be6de18 JG |
1523 | return 0; |
1524 | err_out: | |
1525 | return -ENOMEM; | |
1526 | } | |
1527 | ||
89d53322 JG |
1528 | static void hisi_sas_free(struct hisi_hba *hisi_hba) |
1529 | { | |
1530 | struct device *dev = &hisi_hba->pdev->dev; | |
a8d547bd | 1531 | int i, s, max_command_entries = hisi_hba->hw->max_command_entries; |
89d53322 JG |
1532 | |
1533 | for (i = 0; i < hisi_hba->queue_count; i++) { | |
1534 | s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; | |
1535 | if (hisi_hba->cmd_hdr[i]) | |
1536 | dma_free_coherent(dev, s, | |
1537 | hisi_hba->cmd_hdr[i], | |
1538 | hisi_hba->cmd_hdr_dma[i]); | |
1539 | ||
1540 | s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; | |
1541 | if (hisi_hba->complete_hdr[i]) | |
1542 | dma_free_coherent(dev, s, | |
1543 | hisi_hba->complete_hdr[i], | |
1544 | hisi_hba->complete_hdr_dma[i]); | |
1545 | } | |
1546 | ||
1547 | dma_pool_destroy(hisi_hba->status_buffer_pool); | |
1548 | dma_pool_destroy(hisi_hba->command_table_pool); | |
1549 | dma_pool_destroy(hisi_hba->sge_page_pool); | |
1550 | ||
1551 | s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); | |
1552 | if (hisi_hba->itct) | |
1553 | dma_free_coherent(dev, s, | |
1554 | hisi_hba->itct, hisi_hba->itct_dma); | |
1555 | ||
a8d547bd | 1556 | s = max_command_entries * sizeof(struct hisi_sas_iost); |
89d53322 JG |
1557 | if (hisi_hba->iost) |
1558 | dma_free_coherent(dev, s, | |
1559 | hisi_hba->iost, hisi_hba->iost_dma); | |
1560 | ||
a8d547bd | 1561 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint); |
89d53322 JG |
1562 | if (hisi_hba->breakpoint) |
1563 | dma_free_coherent(dev, s, | |
1564 | hisi_hba->breakpoint, | |
1565 | hisi_hba->breakpoint_dma); | |
1566 | ||
1567 | ||
1568 | s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; | |
1569 | if (hisi_hba->initial_fis) | |
1570 | dma_free_coherent(dev, s, | |
1571 | hisi_hba->initial_fis, | |
1572 | hisi_hba->initial_fis_dma); | |
1573 | ||
a8d547bd | 1574 | s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2; |
89d53322 JG |
1575 | if (hisi_hba->sata_breakpoint) |
1576 | dma_free_coherent(dev, s, | |
1577 | hisi_hba->sata_breakpoint, | |
1578 | hisi_hba->sata_breakpoint_dma); | |
1579 | ||
7e9080e1 JG |
1580 | if (hisi_hba->wq) |
1581 | destroy_workqueue(hisi_hba->wq); | |
89d53322 | 1582 | } |
6be6de18 | 1583 | |
06ec0fb9 XC |
1584 | static void hisi_sas_rst_work_handler(struct work_struct *work) |
1585 | { | |
1586 | struct hisi_hba *hisi_hba = | |
1587 | container_of(work, struct hisi_hba, rst_work); | |
1588 | ||
1589 | hisi_sas_controller_reset(hisi_hba); | |
1590 | } | |
1591 | ||
7eb7869f JG |
1592 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
1593 | const struct hisi_sas_hw *hw) | |
1594 | { | |
e26b2f40 | 1595 | struct resource *res; |
7eb7869f JG |
1596 | struct Scsi_Host *shost; |
1597 | struct hisi_hba *hisi_hba; | |
1598 | struct device *dev = &pdev->dev; | |
e26b2f40 | 1599 | struct device_node *np = pdev->dev.of_node; |
3bc45af8 | 1600 | struct clk *refclk; |
7eb7869f JG |
1601 | |
1602 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); | |
d37a0082 XT |
1603 | if (!shost) { |
1604 | dev_err(dev, "scsi host alloc failed\n"); | |
1605 | return NULL; | |
1606 | } | |
7eb7869f JG |
1607 | hisi_hba = shost_priv(shost); |
1608 | ||
06ec0fb9 | 1609 | INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler); |
7eb7869f JG |
1610 | hisi_hba->hw = hw; |
1611 | hisi_hba->pdev = pdev; | |
1612 | hisi_hba->shost = shost; | |
1613 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; | |
1614 | ||
fa42d80d JG |
1615 | init_timer(&hisi_hba->timer); |
1616 | ||
4d558c77 JG |
1617 | if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, |
1618 | SAS_ADDR_SIZE)) | |
e26b2f40 | 1619 | goto err_out; |
e26b2f40 | 1620 | |
4d558c77 JG |
1621 | if (np) { |
1622 | hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, | |
1623 | "hisilicon,sas-syscon"); | |
1624 | if (IS_ERR(hisi_hba->ctrl)) | |
1625 | goto err_out; | |
e26b2f40 | 1626 | |
4d558c77 JG |
1627 | if (device_property_read_u32(dev, "ctrl-reset-reg", |
1628 | &hisi_hba->ctrl_reset_reg)) | |
1629 | goto err_out; | |
e26b2f40 | 1630 | |
4d558c77 JG |
1631 | if (device_property_read_u32(dev, "ctrl-reset-sts-reg", |
1632 | &hisi_hba->ctrl_reset_sts_reg)) | |
1633 | goto err_out; | |
e26b2f40 | 1634 | |
4d558c77 JG |
1635 | if (device_property_read_u32(dev, "ctrl-clock-ena-reg", |
1636 | &hisi_hba->ctrl_clock_ena_reg)) | |
1637 | goto err_out; | |
1638 | } | |
1639 | ||
3bc45af8 JG |
1640 | refclk = devm_clk_get(&pdev->dev, NULL); |
1641 | if (IS_ERR(refclk)) | |
87e287c1 | 1642 | dev_dbg(dev, "no ref clk property\n"); |
3bc45af8 JG |
1643 | else |
1644 | hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000; | |
1645 | ||
4d558c77 | 1646 | if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) |
e26b2f40 JG |
1647 | goto err_out; |
1648 | ||
4d558c77 JG |
1649 | if (device_property_read_u32(dev, "queue-count", |
1650 | &hisi_hba->queue_count)) | |
e26b2f40 JG |
1651 | goto err_out; |
1652 | ||
a6f2c7ff JG |
1653 | if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && |
1654 | dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { | |
1655 | dev_err(dev, "No usable DMA addressing method\n"); | |
1656 | goto err_out; | |
1657 | } | |
1658 | ||
e26b2f40 JG |
1659 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1660 | hisi_hba->regs = devm_ioremap_resource(dev, res); | |
1661 | if (IS_ERR(hisi_hba->regs)) | |
1662 | goto err_out; | |
1663 | ||
89d53322 JG |
1664 | if (hisi_sas_alloc(hisi_hba, shost)) { |
1665 | hisi_sas_free(hisi_hba); | |
6be6de18 | 1666 | goto err_out; |
89d53322 | 1667 | } |
6be6de18 | 1668 | |
7eb7869f JG |
1669 | return shost; |
1670 | err_out: | |
d37a0082 | 1671 | kfree(shost); |
7eb7869f JG |
1672 | dev_err(dev, "shost alloc failed\n"); |
1673 | return NULL; | |
1674 | } | |
1675 | ||
5d74242e JG |
1676 | static void hisi_sas_init_add(struct hisi_hba *hisi_hba) |
1677 | { | |
1678 | int i; | |
1679 | ||
1680 | for (i = 0; i < hisi_hba->n_phy; i++) | |
1681 | memcpy(&hisi_hba->phy[i].dev_sas_addr, | |
1682 | hisi_hba->sas_addr, | |
1683 | SAS_ADDR_SIZE); | |
1684 | } | |
1685 | ||
7eb7869f JG |
1686 | int hisi_sas_probe(struct platform_device *pdev, |
1687 | const struct hisi_sas_hw *hw) | |
1688 | { | |
1689 | struct Scsi_Host *shost; | |
1690 | struct hisi_hba *hisi_hba; | |
1691 | struct device *dev = &pdev->dev; | |
1692 | struct asd_sas_phy **arr_phy; | |
1693 | struct asd_sas_port **arr_port; | |
1694 | struct sas_ha_struct *sha; | |
1695 | int rc, phy_nr, port_nr, i; | |
1696 | ||
1697 | shost = hisi_sas_shost_alloc(pdev, hw); | |
d37a0082 XT |
1698 | if (!shost) |
1699 | return -ENOMEM; | |
7eb7869f JG |
1700 | |
1701 | sha = SHOST_TO_SAS_HA(shost); | |
1702 | hisi_hba = shost_priv(shost); | |
1703 | platform_set_drvdata(pdev, sha); | |
50cb916f | 1704 | |
7eb7869f JG |
1705 | phy_nr = port_nr = hisi_hba->n_phy; |
1706 | ||
1707 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); | |
1708 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); | |
d37a0082 XT |
1709 | if (!arr_phy || !arr_port) { |
1710 | rc = -ENOMEM; | |
1711 | goto err_out_ha; | |
1712 | } | |
7eb7869f JG |
1713 | |
1714 | sha->sas_phy = arr_phy; | |
1715 | sha->sas_port = arr_port; | |
7eb7869f JG |
1716 | sha->lldd_ha = hisi_hba; |
1717 | ||
1718 | shost->transportt = hisi_sas_stt; | |
1719 | shost->max_id = HISI_SAS_MAX_DEVICES; | |
1720 | shost->max_lun = ~0; | |
1721 | shost->max_channel = 1; | |
1722 | shost->max_cmd_len = 16; | |
1723 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); | |
a8d547bd JG |
1724 | shost->can_queue = hisi_hba->hw->max_command_entries; |
1725 | shost->cmd_per_lun = hisi_hba->hw->max_command_entries; | |
7eb7869f JG |
1726 | |
1727 | sha->sas_ha_name = DRV_NAME; | |
1728 | sha->dev = &hisi_hba->pdev->dev; | |
1729 | sha->lldd_module = THIS_MODULE; | |
1730 | sha->sas_addr = &hisi_hba->sas_addr[0]; | |
1731 | sha->num_phys = hisi_hba->n_phy; | |
1732 | sha->core.shost = hisi_hba->shost; | |
1733 | ||
1734 | for (i = 0; i < hisi_hba->n_phy; i++) { | |
1735 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; | |
1736 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; | |
1737 | } | |
1738 | ||
5d74242e JG |
1739 | hisi_sas_init_add(hisi_hba); |
1740 | ||
7eb7869f JG |
1741 | rc = scsi_add_host(shost, &pdev->dev); |
1742 | if (rc) | |
1743 | goto err_out_ha; | |
1744 | ||
1745 | rc = sas_register_ha(sha); | |
1746 | if (rc) | |
1747 | goto err_out_register_ha; | |
1748 | ||
0757f041 XC |
1749 | rc = hisi_hba->hw->hw_init(hisi_hba); |
1750 | if (rc) | |
1751 | goto err_out_register_ha; | |
1752 | ||
7eb7869f JG |
1753 | scsi_scan_host(shost); |
1754 | ||
1755 | return 0; | |
1756 | ||
1757 | err_out_register_ha: | |
1758 | scsi_remove_host(shost); | |
1759 | err_out_ha: | |
d37a0082 | 1760 | hisi_sas_free(hisi_hba); |
7eb7869f JG |
1761 | kfree(shost); |
1762 | return rc; | |
1763 | } | |
1764 | EXPORT_SYMBOL_GPL(hisi_sas_probe); | |
1765 | ||
89d53322 JG |
1766 | int hisi_sas_remove(struct platform_device *pdev) |
1767 | { | |
1768 | struct sas_ha_struct *sha = platform_get_drvdata(pdev); | |
1769 | struct hisi_hba *hisi_hba = sha->lldd_ha; | |
d37a0082 | 1770 | struct Scsi_Host *shost = sha->core.shost; |
89d53322 JG |
1771 | |
1772 | scsi_remove_host(sha->core.shost); | |
1773 | sas_unregister_ha(sha); | |
1774 | sas_remove_host(sha->core.shost); | |
1775 | ||
1776 | hisi_sas_free(hisi_hba); | |
d37a0082 | 1777 | kfree(shost); |
89d53322 JG |
1778 | return 0; |
1779 | } | |
1780 | EXPORT_SYMBOL_GPL(hisi_sas_remove); | |
1781 | ||
e8899fad JG |
1782 | static __init int hisi_sas_init(void) |
1783 | { | |
1784 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); | |
1785 | ||
1786 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); | |
1787 | if (!hisi_sas_stt) | |
1788 | return -ENOMEM; | |
1789 | ||
1790 | return 0; | |
1791 | } | |
1792 | ||
1793 | static __exit void hisi_sas_exit(void) | |
1794 | { | |
1795 | sas_release_transport(hisi_sas_stt); | |
1796 | } | |
1797 | ||
1798 | module_init(hisi_sas_init); | |
1799 | module_exit(hisi_sas_exit); | |
1800 | ||
1801 | MODULE_VERSION(DRV_VERSION); | |
1802 | MODULE_LICENSE("GPL"); | |
1803 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); | |
1804 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); | |
1805 | MODULE_ALIAS("platform:" DRV_NAME); |