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10#include "mv_sas.h"
11
12static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
13{
14 if (task->lldd_task) {
15 struct mvs_slot_info *slot;
16 slot = task->lldd_task;
17 *tag = slot->slot_tag;
18 return 1;
19 }
20 return 0;
21}
22
23void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
24{
25 void *bitmap = mvi->tags;
26 clear_bit(tag, bitmap);
27}
28
29void mvs_tag_free(struct mvs_info *mvi, u32 tag)
30{
31 mvs_tag_clear(mvi, tag);
32}
33
34void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
35{
36 void *bitmap = mvi->tags;
37 set_bit(tag, bitmap);
38}
39
40inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
41{
42 unsigned int index, tag;
43 void *bitmap = mvi->tags;
44
45 index = find_first_zero_bit(bitmap, mvi->tags_num);
46 tag = index;
47 if (tag >= mvi->tags_num)
48 return -SAS_QUEUE_FULL;
49 mvs_tag_set(mvi, tag);
50 *tag_out = tag;
51 return 0;
52}
53
54void mvs_tag_init(struct mvs_info *mvi)
55{
56 int i;
57 for (i = 0; i < mvi->tags_num; ++i)
58 mvs_tag_clear(mvi, i);
59}
60
61static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
62{
63 unsigned long i = 0, j = 0, hi = 0;
64 struct sas_ha_struct *sha = dev->port->ha;
65 struct mvs_info *mvi = NULL;
66 struct asd_sas_phy *phy;
67
68 while (sha->sas_port[i]) {
69 if (sha->sas_port[i] == dev->port) {
70 phy = container_of(sha->sas_port[i]->phy_list.next,
71 struct asd_sas_phy, port_phy_el);
72 j = 0;
73 while (sha->sas_phy[j]) {
74 if (sha->sas_phy[j] == phy)
75 break;
76 j++;
77 }
78 break;
79 }
80 i++;
81 }
82 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
83 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
84
85 return mvi;
86
87}
88
89static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
90{
91 unsigned long i = 0, j = 0, n = 0, num = 0;
92 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
93 struct mvs_info *mvi = mvi_dev->mvi_info;
94 struct sas_ha_struct *sha = dev->port->ha;
95
96 while (sha->sas_port[i]) {
97 if (sha->sas_port[i] == dev->port) {
98 struct asd_sas_phy *phy;
99 list_for_each_entry(phy,
100 &sha->sas_port[i]->phy_list, port_phy_el) {
101 j = 0;
102 while (sha->sas_phy[j]) {
103 if (sha->sas_phy[j] == phy)
104 break;
105 j++;
106 }
107 phyno[n] = (j >= mvi->chip->n_phy) ?
108 (j - mvi->chip->n_phy) : j;
109 num++;
110 n++;
111 }
112 break;
113 }
114 i++;
115 }
116 return num;
117}
118
119struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
120 u8 reg_set)
121{
122 u32 dev_no;
123 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
124 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
125 continue;
126
127 if (mvi->devices[dev_no].taskfileset == reg_set)
128 return &mvi->devices[dev_no];
129 }
130 return NULL;
131}
132
133static inline void mvs_free_reg_set(struct mvs_info *mvi,
134 struct mvs_device *dev)
135{
136 if (!dev) {
137 mv_printk("device has been free.\n");
138 return;
139 }
140 if (dev->taskfileset == MVS_ID_NOT_MAPPED)
141 return;
142 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
143}
144
145static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
146 struct mvs_device *dev)
147{
148 if (dev->taskfileset != MVS_ID_NOT_MAPPED)
149 return 0;
150 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
151}
152
153void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
154{
155 u32 no;
156 for_each_phy(phy_mask, phy_mask, no) {
157 if (!(phy_mask & 1))
158 continue;
159 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
160 }
161}
162
163int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
164 void *funcdata)
165{
166 int rc = 0, phy_id = sas_phy->id;
167 u32 tmp, i = 0, hi;
168 struct sas_ha_struct *sha = sas_phy->ha;
169 struct mvs_info *mvi = NULL;
170
171 while (sha->sas_phy[i]) {
172 if (sha->sas_phy[i] == sas_phy)
173 break;
174 i++;
175 }
176 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
177 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
178
179 switch (func) {
180 case PHY_FUNC_SET_LINK_RATE:
181 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
182 break;
183
184 case PHY_FUNC_HARD_RESET:
185 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
186 if (tmp & PHY_RST_HARD)
187 break;
188 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
189 break;
190
191 case PHY_FUNC_LINK_RESET:
192 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
193 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
194 break;
195
196 case PHY_FUNC_DISABLE:
197 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
198 break;
199 case PHY_FUNC_RELEASE_SPINUP_HOLD:
200 default:
201 rc = -ENOSYS;
202 }
203 msleep(200);
204 return rc;
205}
206
207void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
208 u32 off_hi, u64 sas_addr)
209{
210 u32 lo = (u32)sas_addr;
211 u32 hi = (u32)(sas_addr>>32);
212
213 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
214 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
215 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
216 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
217}
218
219static void mvs_bytes_dmaed(struct mvs_info *mvi, int i, gfp_t gfp_flags)
220{
221 struct mvs_phy *phy = &mvi->phy[i];
222 struct asd_sas_phy *sas_phy = &phy->sas_phy;
223
224 if (!phy->phy_attached)
225 return;
226
227 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
228 && phy->phy_type & PORT_TYPE_SAS) {
229 return;
230 }
231
232 sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags);
233
234 if (sas_phy->phy) {
235 struct sas_phy *sphy = sas_phy->phy;
236
237 sphy->negotiated_linkrate = sas_phy->linkrate;
238 sphy->minimum_linkrate = phy->minimum_linkrate;
239 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
240 sphy->maximum_linkrate = phy->maximum_linkrate;
241 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
242 }
243
244 if (phy->phy_type & PORT_TYPE_SAS) {
245 struct sas_identify_frame *id;
246
247 id = (struct sas_identify_frame *)phy->frame_rcvd;
248 id->dev_type = phy->identify.device_type;
249 id->initiator_bits = SAS_PROTOCOL_ALL;
250 id->target_bits = phy->identify.target_port_protocols;
251
252
253 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
254 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
255 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00);
256 }
257 } else if (phy->phy_type & PORT_TYPE_SATA) {
258
259 }
260 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
261
262 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
263
264 sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags);
265}
266
267void mvs_scan_start(struct Scsi_Host *shost)
268{
269 int i, j;
270 unsigned short core_nr;
271 struct mvs_info *mvi;
272 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
273 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
274
275 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
276
277 for (j = 0; j < core_nr; j++) {
278 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
279 for (i = 0; i < mvi->chip->n_phy; ++i)
280 mvs_bytes_dmaed(mvi, i, GFP_KERNEL);
281 }
282 mvs_prv->scan_finished = 1;
283}
284
285int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
286{
287 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
288 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
289
290 if (mvs_prv->scan_finished == 0)
291 return 0;
292
293 sas_drain_work(sha);
294 return 1;
295}
296
297static int mvs_task_prep_smp(struct mvs_info *mvi,
298 struct mvs_task_exec_info *tei)
299{
300 int elem, rc, i;
301 struct sas_ha_struct *sha = mvi->sas;
302 struct sas_task *task = tei->task;
303 struct mvs_cmd_hdr *hdr = tei->hdr;
304 struct domain_device *dev = task->dev;
305 struct asd_sas_port *sas_port = dev->port;
306 struct sas_phy *sphy = dev->phy;
307 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
308 struct scatterlist *sg_req, *sg_resp;
309 u32 req_len, resp_len, tag = tei->tag;
310 void *buf_tmp;
311 u8 *buf_oaf;
312 dma_addr_t buf_tmp_dma;
313 void *buf_prd;
314 struct mvs_slot_info *slot = &mvi->slot_info[tag];
315 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
316
317
318
319
320 sg_req = &task->smp_task.smp_req;
321 elem = dma_map_sg(mvi->dev, sg_req, 1, DMA_TO_DEVICE);
322 if (!elem)
323 return -ENOMEM;
324 req_len = sg_dma_len(sg_req);
325
326 sg_resp = &task->smp_task.smp_resp;
327 elem = dma_map_sg(mvi->dev, sg_resp, 1, DMA_FROM_DEVICE);
328 if (!elem) {
329 rc = -ENOMEM;
330 goto err_out;
331 }
332 resp_len = SB_RFB_MAX;
333
334
335 if ((req_len & 0x3) || (resp_len & 0x3)) {
336 rc = -EINVAL;
337 goto err_out_2;
338 }
339
340
341
342
343
344
345 buf_tmp = slot->buf;
346 buf_tmp_dma = slot->buf_dma;
347
348 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
349
350
351 buf_oaf = buf_tmp;
352 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
353
354 buf_tmp += MVS_OAF_SZ;
355 buf_tmp_dma += MVS_OAF_SZ;
356
357
358 buf_prd = buf_tmp;
359 if (tei->n_elem)
360 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
361 else
362 hdr->prd_tbl = 0;
363
364 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
365 buf_tmp += i;
366 buf_tmp_dma += i;
367
368
369 slot->response = buf_tmp;
370 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
371 if (mvi->flags & MVF_FLAG_SOC)
372 hdr->reserved[0] = 0;
373
374
375
376
377 slot->tx = mvi->tx_prod;
378 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
379 TXQ_MODE_I | tag |
380 (MVS_PHY_ID << TXQ_PHY_SHIFT));
381
382 hdr->flags |= flags;
383 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
384 hdr->tags = cpu_to_le32(tag);
385 hdr->data_len = 0;
386
387
388
389 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
390 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
391 *(u16 *)(buf_oaf + 2) = 0xFFFF;
392 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
393
394
395 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
396
397 return 0;
398
399err_out_2:
400 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
401 DMA_FROM_DEVICE);
402err_out:
403 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
404 DMA_TO_DEVICE);
405 return rc;
406}
407
408static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
409{
410 struct ata_queued_cmd *qc = task->uldd_task;
411
412 if (qc) {
413 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
414 qc->tf.command == ATA_CMD_FPDMA_READ ||
415 qc->tf.command == ATA_CMD_FPDMA_RECV ||
416 qc->tf.command == ATA_CMD_FPDMA_SEND ||
417 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
418 *tag = qc->tag;
419 return 1;
420 }
421 }
422
423 return 0;
424}
425
426static int mvs_task_prep_ata(struct mvs_info *mvi,
427 struct mvs_task_exec_info *tei)
428{
429 struct sas_task *task = tei->task;
430 struct domain_device *dev = task->dev;
431 struct mvs_device *mvi_dev = dev->lldd_dev;
432 struct mvs_cmd_hdr *hdr = tei->hdr;
433 struct asd_sas_port *sas_port = dev->port;
434 struct mvs_slot_info *slot;
435 void *buf_prd;
436 u32 tag = tei->tag, hdr_tag;
437 u32 flags, del_q;
438 void *buf_tmp;
439 u8 *buf_cmd, *buf_oaf;
440 dma_addr_t buf_tmp_dma;
441 u32 i, req_len, resp_len;
442 const u32 max_resp_len = SB_RFB_MAX;
443
444 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
445 mv_dprintk("Have not enough regiset for dev %d.\n",
446 mvi_dev->device_id);
447 return -EBUSY;
448 }
449 slot = &mvi->slot_info[tag];
450 slot->tx = mvi->tx_prod;
451 del_q = TXQ_MODE_I | tag |
452 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
453 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
454 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
455 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
456
457 if (task->data_dir == DMA_FROM_DEVICE)
458 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
459 else
460 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
461
462 if (task->ata_task.use_ncq)
463 flags |= MCH_FPDMA;
464 if (dev->sata_dev.class == ATA_DEV_ATAPI) {
465 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
466 flags |= MCH_ATAPI;
467 }
468
469 hdr->flags = cpu_to_le32(flags);
470
471 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
472 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
473 else
474 hdr_tag = tag;
475
476 hdr->tags = cpu_to_le32(hdr_tag);
477
478 hdr->data_len = cpu_to_le32(task->total_xfer_len);
479
480
481
482
483
484
485 buf_cmd = buf_tmp = slot->buf;
486 buf_tmp_dma = slot->buf_dma;
487
488 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
489
490 buf_tmp += MVS_ATA_CMD_SZ;
491 buf_tmp_dma += MVS_ATA_CMD_SZ;
492
493
494
495 buf_oaf = buf_tmp;
496 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
497
498 buf_tmp += MVS_OAF_SZ;
499 buf_tmp_dma += MVS_OAF_SZ;
500
501
502 buf_prd = buf_tmp;
503
504 if (tei->n_elem)
505 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
506 else
507 hdr->prd_tbl = 0;
508 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
509
510 buf_tmp += i;
511 buf_tmp_dma += i;
512
513
514 slot->response = buf_tmp;
515 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
516 if (mvi->flags & MVF_FLAG_SOC)
517 hdr->reserved[0] = 0;
518
519 req_len = sizeof(struct host_to_dev_fis);
520 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
521 sizeof(struct mvs_err_info) - i;
522
523
524 resp_len = min(resp_len, max_resp_len);
525 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
526
527 if (likely(!task->ata_task.device_control_reg_update))
528 task->ata_task.fis.flags |= 0x80;
529
530 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
531 if (dev->sata_dev.class == ATA_DEV_ATAPI)
532 memcpy(buf_cmd + STP_ATAPI_CMD,
533 task->ata_task.atapi_packet, 16);
534
535
536
537 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
538 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
539 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
540 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
541
542
543 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
544
545 if (task->data_dir == DMA_FROM_DEVICE)
546 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
547 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
548
549 return 0;
550}
551
552static int mvs_task_prep_ssp(struct mvs_info *mvi,
553 struct mvs_task_exec_info *tei, int is_tmf,
554 struct mvs_tmf_task *tmf)
555{
556 struct sas_task *task = tei->task;
557 struct mvs_cmd_hdr *hdr = tei->hdr;
558 struct mvs_port *port = tei->port;
559 struct domain_device *dev = task->dev;
560 struct mvs_device *mvi_dev = dev->lldd_dev;
561 struct asd_sas_port *sas_port = dev->port;
562 struct mvs_slot_info *slot;
563 void *buf_prd;
564 struct ssp_frame_hdr *ssp_hdr;
565 void *buf_tmp;
566 u8 *buf_cmd, *buf_oaf, fburst = 0;
567 dma_addr_t buf_tmp_dma;
568 u32 flags;
569 u32 resp_len, req_len, i, tag = tei->tag;
570 const u32 max_resp_len = SB_RFB_MAX;
571 u32 phy_mask;
572
573 slot = &mvi->slot_info[tag];
574
575 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
576 sas_port->phy_mask) & TXQ_PHY_MASK;
577
578 slot->tx = mvi->tx_prod;
579 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
580 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
581 (phy_mask << TXQ_PHY_SHIFT));
582
583 flags = MCH_RETRY;
584 if (task->ssp_task.enable_first_burst) {
585 flags |= MCH_FBURST;
586 fburst = (1 << 7);
587 }
588 if (is_tmf)
589 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
590 else
591 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
592
593 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
594 hdr->tags = cpu_to_le32(tag);
595 hdr->data_len = cpu_to_le32(task->total_xfer_len);
596
597
598
599
600
601
602 buf_cmd = buf_tmp = slot->buf;
603 buf_tmp_dma = slot->buf_dma;
604
605 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
606
607 buf_tmp += MVS_SSP_CMD_SZ;
608 buf_tmp_dma += MVS_SSP_CMD_SZ;
609
610
611 buf_oaf = buf_tmp;
612 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
613
614 buf_tmp += MVS_OAF_SZ;
615 buf_tmp_dma += MVS_OAF_SZ;
616
617
618 buf_prd = buf_tmp;
619 if (tei->n_elem)
620 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
621 else
622 hdr->prd_tbl = 0;
623
624 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
625 buf_tmp += i;
626 buf_tmp_dma += i;
627
628
629 slot->response = buf_tmp;
630 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
631 if (mvi->flags & MVF_FLAG_SOC)
632 hdr->reserved[0] = 0;
633
634 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
635 sizeof(struct mvs_err_info) - i;
636 resp_len = min(resp_len, max_resp_len);
637
638 req_len = sizeof(struct ssp_frame_hdr) + 28;
639
640
641 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
642
643
644
645 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
646 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
647 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
648 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
649
650
651 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
652
653 if (is_tmf)
654 ssp_hdr->frame_type = SSP_TASK;
655 else
656 ssp_hdr->frame_type = SSP_COMMAND;
657
658 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
659 HASHED_SAS_ADDR_SIZE);
660 memcpy(ssp_hdr->hashed_src_addr,
661 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
662 ssp_hdr->tag = cpu_to_be16(tag);
663
664
665 buf_cmd += sizeof(*ssp_hdr);
666 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
667
668 if (ssp_hdr->frame_type != SSP_TASK) {
669 buf_cmd[9] = fburst | task->ssp_task.task_attr |
670 (task->ssp_task.task_prio << 3);
671 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
672 task->ssp_task.cmd->cmd_len);
673 } else{
674 buf_cmd[10] = tmf->tmf;
675 switch (tmf->tmf) {
676 case TMF_ABORT_TASK:
677 case TMF_QUERY_TASK:
678 buf_cmd[12] =
679 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
680 buf_cmd[13] =
681 tmf->tag_of_task_to_be_managed & 0xff;
682 break;
683 default:
684 break;
685 }
686 }
687
688 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
689 return 0;
690}
691
692#define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
693static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
694 struct mvs_tmf_task *tmf, int *pass)
695{
696 struct domain_device *dev = task->dev;
697 struct mvs_device *mvi_dev = dev->lldd_dev;
698 struct mvs_task_exec_info tei;
699 struct mvs_slot_info *slot;
700 u32 tag = 0xdeadbeef, n_elem = 0;
701 int rc = 0;
702
703 if (!dev->port) {
704 struct task_status_struct *tsm = &task->task_status;
705
706 tsm->resp = SAS_TASK_UNDELIVERED;
707 tsm->stat = SAS_PHY_DOWN;
708
709
710
711
712 if (dev->dev_type != SAS_SATA_DEV)
713 task->task_done(task);
714 return rc;
715 }
716
717 if (DEV_IS_GONE(mvi_dev)) {
718 if (mvi_dev)
719 mv_dprintk("device %d not ready.\n",
720 mvi_dev->device_id);
721 else
722 mv_dprintk("device %016llx not ready.\n",
723 SAS_ADDR(dev->sas_addr));
724
725 rc = SAS_PHY_DOWN;
726 return rc;
727 }
728 tei.port = dev->port->lldd_port;
729 if (tei.port && !tei.port->port_attached && !tmf) {
730 if (sas_protocol_ata(task->task_proto)) {
731 struct task_status_struct *ts = &task->task_status;
732 mv_dprintk("SATA/STP port %d does not attach"
733 "device.\n", dev->port->id);
734 ts->resp = SAS_TASK_COMPLETE;
735 ts->stat = SAS_PHY_DOWN;
736
737 task->task_done(task);
738
739 } else {
740 struct task_status_struct *ts = &task->task_status;
741 mv_dprintk("SAS port %d does not attach"
742 "device.\n", dev->port->id);
743 ts->resp = SAS_TASK_UNDELIVERED;
744 ts->stat = SAS_PHY_DOWN;
745 task->task_done(task);
746 }
747 return rc;
748 }
749
750 if (!sas_protocol_ata(task->task_proto)) {
751 if (task->num_scatter) {
752 n_elem = dma_map_sg(mvi->dev,
753 task->scatter,
754 task->num_scatter,
755 task->data_dir);
756 if (!n_elem) {
757 rc = -ENOMEM;
758 goto prep_out;
759 }
760 }
761 } else {
762 n_elem = task->num_scatter;
763 }
764
765 rc = mvs_tag_alloc(mvi, &tag);
766 if (rc)
767 goto err_out;
768
769 slot = &mvi->slot_info[tag];
770
771 task->lldd_task = NULL;
772 slot->n_elem = n_elem;
773 slot->slot_tag = tag;
774
775 slot->buf = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
776 if (!slot->buf) {
777 rc = -ENOMEM;
778 goto err_out_tag;
779 }
780
781 tei.task = task;
782 tei.hdr = &mvi->slot[tag];
783 tei.tag = tag;
784 tei.n_elem = n_elem;
785 switch (task->task_proto) {
786 case SAS_PROTOCOL_SMP:
787 rc = mvs_task_prep_smp(mvi, &tei);
788 break;
789 case SAS_PROTOCOL_SSP:
790 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
791 break;
792 case SAS_PROTOCOL_SATA:
793 case SAS_PROTOCOL_STP:
794 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
795 rc = mvs_task_prep_ata(mvi, &tei);
796 break;
797 default:
798 dev_printk(KERN_ERR, mvi->dev,
799 "unknown sas_task proto: 0x%x\n",
800 task->task_proto);
801 rc = -EINVAL;
802 break;
803 }
804
805 if (rc) {
806 mv_dprintk("rc is %x\n", rc);
807 goto err_out_slot_buf;
808 }
809 slot->task = task;
810 slot->port = tei.port;
811 task->lldd_task = slot;
812 list_add_tail(&slot->entry, &tei.port->list);
813 spin_lock(&task->task_state_lock);
814 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
815 spin_unlock(&task->task_state_lock);
816
817 mvi_dev->running_req++;
818 ++(*pass);
819 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
820
821 return rc;
822
823err_out_slot_buf:
824 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
825err_out_tag:
826 mvs_tag_free(mvi, tag);
827err_out:
828
829 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
830 if (!sas_protocol_ata(task->task_proto))
831 if (n_elem)
832 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
833 task->data_dir);
834prep_out:
835 return rc;
836}
837
838static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
839 struct completion *completion, int is_tmf,
840 struct mvs_tmf_task *tmf)
841{
842 struct mvs_info *mvi = NULL;
843 u32 rc = 0;
844 u32 pass = 0;
845 unsigned long flags = 0;
846
847 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
848
849 spin_lock_irqsave(&mvi->lock, flags);
850 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
851 if (rc)
852 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
853
854 if (likely(pass))
855 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
856 (MVS_CHIP_SLOT_SZ - 1));
857 spin_unlock_irqrestore(&mvi->lock, flags);
858
859 return rc;
860}
861
862int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
863{
864 return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
865}
866
867static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
868{
869 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
870 mvs_tag_clear(mvi, slot_idx);
871}
872
873static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
874 struct mvs_slot_info *slot, u32 slot_idx)
875{
876 if (!slot)
877 return;
878 if (!slot->task)
879 return;
880 if (!sas_protocol_ata(task->task_proto))
881 if (slot->n_elem)
882 dma_unmap_sg(mvi->dev, task->scatter,
883 slot->n_elem, task->data_dir);
884
885 switch (task->task_proto) {
886 case SAS_PROTOCOL_SMP:
887 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
888 DMA_FROM_DEVICE);
889 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
890 DMA_TO_DEVICE);
891 break;
892
893 case SAS_PROTOCOL_SATA:
894 case SAS_PROTOCOL_STP:
895 case SAS_PROTOCOL_SSP:
896 default:
897
898 break;
899 }
900
901 if (slot->buf) {
902 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
903 slot->buf = NULL;
904 }
905 list_del_init(&slot->entry);
906 task->lldd_task = NULL;
907 slot->task = NULL;
908 slot->port = NULL;
909 slot->slot_tag = 0xFFFFFFFF;
910 mvs_slot_free(mvi, slot_idx);
911}
912
913static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
914{
915 struct mvs_phy *phy = &mvi->phy[phy_no];
916 struct mvs_port *port = phy->port;
917 int j, no;
918
919 for_each_phy(port->wide_port_phymap, j, no) {
920 if (j & 1) {
921 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
922 PHYR_WIDE_PORT);
923 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
924 port->wide_port_phymap);
925 } else {
926 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
927 PHYR_WIDE_PORT);
928 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
929 0);
930 }
931 }
932}
933
934static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
935{
936 u32 tmp;
937 struct mvs_phy *phy = &mvi->phy[i];
938 struct mvs_port *port = phy->port;
939
940 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
941 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
942 if (!port)
943 phy->phy_attached = 1;
944 return tmp;
945 }
946
947 if (port) {
948 if (phy->phy_type & PORT_TYPE_SAS) {
949 port->wide_port_phymap &= ~(1U << i);
950 if (!port->wide_port_phymap)
951 port->port_attached = 0;
952 mvs_update_wideport(mvi, i);
953 } else if (phy->phy_type & PORT_TYPE_SATA)
954 port->port_attached = 0;
955 phy->port = NULL;
956 phy->phy_attached = 0;
957 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
958 }
959 return 0;
960}
961
962static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
963{
964 u32 *s = (u32 *) buf;
965
966 if (!s)
967 return NULL;
968
969 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
970 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
971
972 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
973 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
974
975 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
976 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
977
978 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
979 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
980
981 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
982 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
983
984 return s;
985}
986
987static u32 mvs_is_sig_fis_received(u32 irq_status)
988{
989 return irq_status & PHYEV_SIG_FIS;
990}
991
992static void mvs_sig_remove_timer(struct mvs_phy *phy)
993{
994 if (phy->timer.function)
995 del_timer(&phy->timer);
996 phy->timer.function = NULL;
997}
998
999void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1000{
1001 struct mvs_phy *phy = &mvi->phy[i];
1002 struct sas_identify_frame *id;
1003
1004 id = (struct sas_identify_frame *)phy->frame_rcvd;
1005
1006 if (get_st) {
1007 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1008 phy->phy_status = mvs_is_phy_ready(mvi, i);
1009 }
1010
1011 if (phy->phy_status) {
1012 int oob_done = 0;
1013 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1014
1015 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1016
1017 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1018 if (phy->phy_type & PORT_TYPE_SATA) {
1019 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1020 if (mvs_is_sig_fis_received(phy->irq_status)) {
1021 mvs_sig_remove_timer(phy);
1022 phy->phy_attached = 1;
1023 phy->att_dev_sas_addr =
1024 i + mvi->id * mvi->chip->n_phy;
1025 if (oob_done)
1026 sas_phy->oob_mode = SATA_OOB_MODE;
1027 phy->frame_rcvd_size =
1028 sizeof(struct dev_to_host_fis);
1029 mvs_get_d2h_reg(mvi, i, id);
1030 } else {
1031 u32 tmp;
1032 dev_printk(KERN_DEBUG, mvi->dev,
1033 "Phy%d : No sig fis\n", i);
1034 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1035 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1036 tmp | PHYEV_SIG_FIS);
1037 phy->phy_attached = 0;
1038 phy->phy_type &= ~PORT_TYPE_SATA;
1039 goto out_done;
1040 }
1041 } else if (phy->phy_type & PORT_TYPE_SAS
1042 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1043 phy->phy_attached = 1;
1044 phy->identify.device_type =
1045 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1046
1047 if (phy->identify.device_type == SAS_END_DEVICE)
1048 phy->identify.target_port_protocols =
1049 SAS_PROTOCOL_SSP;
1050 else if (phy->identify.device_type != SAS_PHY_UNUSED)
1051 phy->identify.target_port_protocols =
1052 SAS_PROTOCOL_SMP;
1053 if (oob_done)
1054 sas_phy->oob_mode = SAS_OOB_MODE;
1055 phy->frame_rcvd_size =
1056 sizeof(struct sas_identify_frame);
1057 }
1058 memcpy(sas_phy->attached_sas_addr,
1059 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1060
1061 if (MVS_CHIP_DISP->phy_work_around)
1062 MVS_CHIP_DISP->phy_work_around(mvi, i);
1063 }
1064 mv_dprintk("phy %d attach dev info is %x\n",
1065 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1066 mv_dprintk("phy %d attach sas addr is %llx\n",
1067 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1068out_done:
1069 if (get_st)
1070 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1071}
1072
1073static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1074{
1075 struct sas_ha_struct *sas_ha = sas_phy->ha;
1076 struct mvs_info *mvi = NULL; int i = 0, hi;
1077 struct mvs_phy *phy = sas_phy->lldd_phy;
1078 struct asd_sas_port *sas_port = sas_phy->port;
1079 struct mvs_port *port;
1080 unsigned long flags = 0;
1081 if (!sas_port)
1082 return;
1083
1084 while (sas_ha->sas_phy[i]) {
1085 if (sas_ha->sas_phy[i] == sas_phy)
1086 break;
1087 i++;
1088 }
1089 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1090 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1091 if (i >= mvi->chip->n_phy)
1092 port = &mvi->port[i - mvi->chip->n_phy];
1093 else
1094 port = &mvi->port[i];
1095 if (lock)
1096 spin_lock_irqsave(&mvi->lock, flags);
1097 port->port_attached = 1;
1098 phy->port = port;
1099 sas_port->lldd_port = port;
1100 if (phy->phy_type & PORT_TYPE_SAS) {
1101 port->wide_port_phymap = sas_port->phy_mask;
1102 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1103 mvs_update_wideport(mvi, sas_phy->id);
1104
1105
1106 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1107 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1108 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1109 }
1110 }
1111 if (lock)
1112 spin_unlock_irqrestore(&mvi->lock, flags);
1113}
1114
1115static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1116{
1117 struct domain_device *dev;
1118 struct mvs_phy *phy = sas_phy->lldd_phy;
1119 struct mvs_info *mvi = phy->mvi;
1120 struct asd_sas_port *port = sas_phy->port;
1121 int phy_no = 0;
1122
1123 while (phy != &mvi->phy[phy_no]) {
1124 phy_no++;
1125 if (phy_no >= MVS_MAX_PHYS)
1126 return;
1127 }
1128 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1129 mvs_do_release_task(phy->mvi, phy_no, dev);
1130
1131}
1132
1133
1134void mvs_port_formed(struct asd_sas_phy *sas_phy)
1135{
1136 mvs_port_notify_formed(sas_phy, 1);
1137}
1138
1139void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1140{
1141 mvs_port_notify_deformed(sas_phy, 1);
1142}
1143
1144static struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1145{
1146 u32 dev;
1147 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1148 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1149 mvi->devices[dev].device_id = dev;
1150 return &mvi->devices[dev];
1151 }
1152 }
1153
1154 if (dev == MVS_MAX_DEVICES)
1155 mv_printk("max support %d devices, ignore ..\n",
1156 MVS_MAX_DEVICES);
1157
1158 return NULL;
1159}
1160
1161static void mvs_free_dev(struct mvs_device *mvi_dev)
1162{
1163 u32 id = mvi_dev->device_id;
1164 memset(mvi_dev, 0, sizeof(*mvi_dev));
1165 mvi_dev->device_id = id;
1166 mvi_dev->dev_type = SAS_PHY_UNUSED;
1167 mvi_dev->dev_status = MVS_DEV_NORMAL;
1168 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1169}
1170
1171static int mvs_dev_found_notify(struct domain_device *dev, int lock)
1172{
1173 unsigned long flags = 0;
1174 int res = 0;
1175 struct mvs_info *mvi = NULL;
1176 struct domain_device *parent_dev = dev->parent;
1177 struct mvs_device *mvi_device;
1178
1179 mvi = mvs_find_dev_mvi(dev);
1180
1181 if (lock)
1182 spin_lock_irqsave(&mvi->lock, flags);
1183
1184 mvi_device = mvs_alloc_dev(mvi);
1185 if (!mvi_device) {
1186 res = -1;
1187 goto found_out;
1188 }
1189 dev->lldd_dev = mvi_device;
1190 mvi_device->dev_status = MVS_DEV_NORMAL;
1191 mvi_device->dev_type = dev->dev_type;
1192 mvi_device->mvi_info = mvi;
1193 mvi_device->sas_device = dev;
1194 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
1195 int phy_id;
1196 u8 phy_num = parent_dev->ex_dev.num_phys;
1197 struct ex_phy *phy;
1198 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1199 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1200 if (SAS_ADDR(phy->attached_sas_addr) ==
1201 SAS_ADDR(dev->sas_addr)) {
1202 mvi_device->attached_phy = phy_id;
1203 break;
1204 }
1205 }
1206
1207 if (phy_id == phy_num) {
1208 mv_printk("Error: no attached dev:%016llx"
1209 "at ex:%016llx.\n",
1210 SAS_ADDR(dev->sas_addr),
1211 SAS_ADDR(parent_dev->sas_addr));
1212 res = -1;
1213 }
1214 }
1215
1216found_out:
1217 if (lock)
1218 spin_unlock_irqrestore(&mvi->lock, flags);
1219 return res;
1220}
1221
1222int mvs_dev_found(struct domain_device *dev)
1223{
1224 return mvs_dev_found_notify(dev, 1);
1225}
1226
1227static void mvs_dev_gone_notify(struct domain_device *dev)
1228{
1229 unsigned long flags = 0;
1230 struct mvs_device *mvi_dev = dev->lldd_dev;
1231 struct mvs_info *mvi;
1232
1233 if (!mvi_dev) {
1234 mv_dprintk("found dev has gone.\n");
1235 return;
1236 }
1237
1238 mvi = mvi_dev->mvi_info;
1239
1240 spin_lock_irqsave(&mvi->lock, flags);
1241
1242 mv_dprintk("found dev[%d:%x] is gone.\n",
1243 mvi_dev->device_id, mvi_dev->dev_type);
1244 mvs_release_task(mvi, dev);
1245 mvs_free_reg_set(mvi, mvi_dev);
1246 mvs_free_dev(mvi_dev);
1247
1248 dev->lldd_dev = NULL;
1249 mvi_dev->sas_device = NULL;
1250
1251 spin_unlock_irqrestore(&mvi->lock, flags);
1252}
1253
1254
1255void mvs_dev_gone(struct domain_device *dev)
1256{
1257 mvs_dev_gone_notify(dev);
1258}
1259
1260static void mvs_task_done(struct sas_task *task)
1261{
1262 if (!del_timer(&task->slow_task->timer))
1263 return;
1264 complete(&task->slow_task->completion);
1265}
1266
1267static void mvs_tmf_timedout(struct timer_list *t)
1268{
1269 struct sas_task_slow *slow = from_timer(slow, t, timer);
1270 struct sas_task *task = slow->task;
1271
1272 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1273 complete(&task->slow_task->completion);
1274}
1275
1276#define MVS_TASK_TIMEOUT 20
1277static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1278 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1279{
1280 int res, retry;
1281 struct sas_task *task = NULL;
1282
1283 for (retry = 0; retry < 3; retry++) {
1284 task = sas_alloc_slow_task(GFP_KERNEL);
1285 if (!task)
1286 return -ENOMEM;
1287
1288 task->dev = dev;
1289 task->task_proto = dev->tproto;
1290
1291 memcpy(&task->ssp_task, parameter, para_len);
1292 task->task_done = mvs_task_done;
1293
1294 task->slow_task->timer.function = mvs_tmf_timedout;
1295 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1296 add_timer(&task->slow_task->timer);
1297
1298 res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
1299
1300 if (res) {
1301 del_timer(&task->slow_task->timer);
1302 mv_printk("executing internal task failed:%d\n", res);
1303 goto ex_err;
1304 }
1305
1306 wait_for_completion(&task->slow_task->completion);
1307 res = TMF_RESP_FUNC_FAILED;
1308
1309 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1310 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1311 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1312 goto ex_err;
1313 }
1314 }
1315
1316 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1317 task->task_status.stat == SAS_SAM_STAT_GOOD) {
1318 res = TMF_RESP_FUNC_COMPLETE;
1319 break;
1320 }
1321
1322 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1323 task->task_status.stat == SAS_DATA_UNDERRUN) {
1324
1325
1326 res = task->task_status.residual;
1327 break;
1328 }
1329
1330 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1331 task->task_status.stat == SAS_DATA_OVERRUN) {
1332 mv_dprintk("blocked task error.\n");
1333 res = -EMSGSIZE;
1334 break;
1335 } else {
1336 mv_dprintk(" task to dev %016llx response: 0x%x "
1337 "status 0x%x\n",
1338 SAS_ADDR(dev->sas_addr),
1339 task->task_status.resp,
1340 task->task_status.stat);
1341 sas_free_task(task);
1342 task = NULL;
1343
1344 }
1345 }
1346ex_err:
1347 BUG_ON(retry == 3 && task != NULL);
1348 sas_free_task(task);
1349 return res;
1350}
1351
1352static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1353 u8 *lun, struct mvs_tmf_task *tmf)
1354{
1355 struct sas_ssp_task ssp_task;
1356 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1357 return TMF_RESP_FUNC_ESUPP;
1358
1359 memcpy(ssp_task.LUN, lun, 8);
1360
1361 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1362 sizeof(ssp_task), tmf);
1363}
1364
1365
1366
1367
1368static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1369{
1370 int rc;
1371 struct sas_phy *phy = sas_get_local_phy(dev);
1372 int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1373 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1374 rc = sas_phy_reset(phy, reset_type);
1375 sas_put_local_phy(phy);
1376 msleep(2000);
1377 return rc;
1378}
1379
1380
1381int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1382{
1383 unsigned long flags;
1384 int rc = TMF_RESP_FUNC_FAILED;
1385 struct mvs_tmf_task tmf_task;
1386 struct mvs_device * mvi_dev = dev->lldd_dev;
1387 struct mvs_info *mvi = mvi_dev->mvi_info;
1388
1389 tmf_task.tmf = TMF_LU_RESET;
1390 mvi_dev->dev_status = MVS_DEV_EH;
1391 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1392 if (rc == TMF_RESP_FUNC_COMPLETE) {
1393 spin_lock_irqsave(&mvi->lock, flags);
1394 mvs_release_task(mvi, dev);
1395 spin_unlock_irqrestore(&mvi->lock, flags);
1396 }
1397
1398 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1399 mvi_dev->device_id, rc);
1400 return rc;
1401}
1402
1403int mvs_I_T_nexus_reset(struct domain_device *dev)
1404{
1405 unsigned long flags;
1406 int rc = TMF_RESP_FUNC_FAILED;
1407 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1408 struct mvs_info *mvi = mvi_dev->mvi_info;
1409
1410 if (mvi_dev->dev_status != MVS_DEV_EH)
1411 return TMF_RESP_FUNC_COMPLETE;
1412 else
1413 mvi_dev->dev_status = MVS_DEV_NORMAL;
1414 rc = mvs_debug_I_T_nexus_reset(dev);
1415 mv_printk("%s for device[%x]:rc= %d\n",
1416 __func__, mvi_dev->device_id, rc);
1417
1418 spin_lock_irqsave(&mvi->lock, flags);
1419 mvs_release_task(mvi, dev);
1420 spin_unlock_irqrestore(&mvi->lock, flags);
1421
1422 return rc;
1423}
1424
1425int mvs_query_task(struct sas_task *task)
1426{
1427 u32 tag;
1428 struct scsi_lun lun;
1429 struct mvs_tmf_task tmf_task;
1430 int rc = TMF_RESP_FUNC_FAILED;
1431
1432 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1433 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1434 struct domain_device *dev = task->dev;
1435 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1436 struct mvs_info *mvi = mvi_dev->mvi_info;
1437
1438 int_to_scsilun(cmnd->device->lun, &lun);
1439 rc = mvs_find_tag(mvi, task, &tag);
1440 if (rc == 0) {
1441 rc = TMF_RESP_FUNC_FAILED;
1442 return rc;
1443 }
1444
1445 tmf_task.tmf = TMF_QUERY_TASK;
1446 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1447
1448 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1449 switch (rc) {
1450
1451 case TMF_RESP_FUNC_SUCC:
1452
1453 case TMF_RESP_FUNC_FAILED:
1454 case TMF_RESP_FUNC_COMPLETE:
1455 break;
1456 }
1457 }
1458 mv_printk("%s:rc= %d\n", __func__, rc);
1459 return rc;
1460}
1461
1462
1463int mvs_abort_task(struct sas_task *task)
1464{
1465 struct scsi_lun lun;
1466 struct mvs_tmf_task tmf_task;
1467 struct domain_device *dev = task->dev;
1468 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1469 struct mvs_info *mvi;
1470 int rc = TMF_RESP_FUNC_FAILED;
1471 unsigned long flags;
1472 u32 tag;
1473
1474 if (!mvi_dev) {
1475 mv_printk("Device has removed\n");
1476 return TMF_RESP_FUNC_FAILED;
1477 }
1478
1479 mvi = mvi_dev->mvi_info;
1480
1481 spin_lock_irqsave(&task->task_state_lock, flags);
1482 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1483 spin_unlock_irqrestore(&task->task_state_lock, flags);
1484 rc = TMF_RESP_FUNC_COMPLETE;
1485 goto out;
1486 }
1487 spin_unlock_irqrestore(&task->task_state_lock, flags);
1488 mvi_dev->dev_status = MVS_DEV_EH;
1489 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1490 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1491
1492 int_to_scsilun(cmnd->device->lun, &lun);
1493 rc = mvs_find_tag(mvi, task, &tag);
1494 if (rc == 0) {
1495 mv_printk("No such tag in %s\n", __func__);
1496 rc = TMF_RESP_FUNC_FAILED;
1497 return rc;
1498 }
1499
1500 tmf_task.tmf = TMF_ABORT_TASK;
1501 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1502
1503 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1504
1505
1506 if (rc == TMF_RESP_FUNC_COMPLETE) {
1507 u32 slot_no;
1508 struct mvs_slot_info *slot;
1509
1510 if (task->lldd_task) {
1511 slot = task->lldd_task;
1512 slot_no = (u32) (slot - mvi->slot_info);
1513 spin_lock_irqsave(&mvi->lock, flags);
1514 mvs_slot_complete(mvi, slot_no, 1);
1515 spin_unlock_irqrestore(&mvi->lock, flags);
1516 }
1517 }
1518
1519 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1520 task->task_proto & SAS_PROTOCOL_STP) {
1521 if (SAS_SATA_DEV == dev->dev_type) {
1522 struct mvs_slot_info *slot = task->lldd_task;
1523 u32 slot_idx = (u32)(slot - mvi->slot_info);
1524 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1525 "slot=%p slot_idx=x%x\n",
1526 mvi, task, slot, slot_idx);
1527 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1528 mvs_slot_task_free(mvi, task, slot, slot_idx);
1529 rc = TMF_RESP_FUNC_COMPLETE;
1530 goto out;
1531 }
1532
1533 }
1534out:
1535 if (rc != TMF_RESP_FUNC_COMPLETE)
1536 mv_printk("%s:rc= %d\n", __func__, rc);
1537 return rc;
1538}
1539
1540int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1541{
1542 int rc;
1543 struct mvs_tmf_task tmf_task;
1544
1545 tmf_task.tmf = TMF_ABORT_TASK_SET;
1546 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1547
1548 return rc;
1549}
1550
1551int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1552{
1553 int rc = TMF_RESP_FUNC_FAILED;
1554 struct mvs_tmf_task tmf_task;
1555
1556 tmf_task.tmf = TMF_CLEAR_ACA;
1557 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1558
1559 return rc;
1560}
1561
1562int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1563{
1564 int rc = TMF_RESP_FUNC_FAILED;
1565 struct mvs_tmf_task tmf_task;
1566
1567 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1568 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1569
1570 return rc;
1571}
1572
1573static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1574 u32 slot_idx, int err)
1575{
1576 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1577 struct task_status_struct *tstat = &task->task_status;
1578 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1579 int stat = SAM_STAT_GOOD;
1580
1581
1582 resp->frame_len = sizeof(struct dev_to_host_fis);
1583 memcpy(&resp->ending_fis[0],
1584 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1585 sizeof(struct dev_to_host_fis));
1586 tstat->buf_valid_size = sizeof(*resp);
1587 if (unlikely(err)) {
1588 if (unlikely(err & CMD_ISS_STPD))
1589 stat = SAS_OPEN_REJECT;
1590 else
1591 stat = SAS_PROTO_RESPONSE;
1592 }
1593
1594 return stat;
1595}
1596
1597static void mvs_set_sense(u8 *buffer, int len, int d_sense,
1598 int key, int asc, int ascq)
1599{
1600 memset(buffer, 0, len);
1601
1602 if (d_sense) {
1603
1604 if (len < 4) {
1605 mv_printk("Length %d of sense buffer too small to "
1606 "fit sense %x:%x:%x", len, key, asc, ascq);
1607 }
1608
1609 buffer[0] = 0x72;
1610 if (len > 1)
1611 buffer[1] = key;
1612 if (len > 2)
1613 buffer[2] = asc;
1614 if (len > 3)
1615 buffer[3] = ascq;
1616 } else {
1617 if (len < 14) {
1618 mv_printk("Length %d of sense buffer too small to "
1619 "fit sense %x:%x:%x", len, key, asc, ascq);
1620 }
1621
1622 buffer[0] = 0x70;
1623 if (len > 2)
1624 buffer[2] = key;
1625 if (len > 7)
1626 buffer[7] = 0x0a;
1627 if (len > 12)
1628 buffer[12] = asc;
1629 if (len > 13)
1630 buffer[13] = ascq;
1631 }
1632
1633 return;
1634}
1635
1636static void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1637 u8 key, u8 asc, u8 asc_q)
1638{
1639 iu->datapres = 2;
1640 iu->response_data_len = 0;
1641 iu->sense_data_len = 17;
1642 iu->status = 02;
1643 mvs_set_sense(iu->sense_data, 17, 0,
1644 key, asc, asc_q);
1645}
1646
1647static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1648 u32 slot_idx)
1649{
1650 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1651 int stat;
1652 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1653 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1654 u32 tfs = 0;
1655 enum mvs_port_type type = PORT_TYPE_SAS;
1656
1657 if (err_dw0 & CMD_ISS_STPD)
1658 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1659
1660 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1661
1662 stat = SAM_STAT_CHECK_CONDITION;
1663 switch (task->task_proto) {
1664 case SAS_PROTOCOL_SSP:
1665 {
1666 stat = SAS_ABORTED_TASK;
1667 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1668 struct ssp_response_iu *iu = slot->response +
1669 sizeof(struct mvs_err_info);
1670 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1671 sas_ssp_task_response(mvi->dev, task, iu);
1672 stat = SAM_STAT_CHECK_CONDITION;
1673 }
1674 if (err_dw1 & bit(31))
1675 mv_printk("reuse same slot, retry command.\n");
1676 break;
1677 }
1678 case SAS_PROTOCOL_SMP:
1679 stat = SAM_STAT_CHECK_CONDITION;
1680 break;
1681
1682 case SAS_PROTOCOL_SATA:
1683 case SAS_PROTOCOL_STP:
1684 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1685 {
1686 task->ata_task.use_ncq = 0;
1687 stat = SAS_PROTO_RESPONSE;
1688 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1689 }
1690 break;
1691 default:
1692 break;
1693 }
1694
1695 return stat;
1696}
1697
1698int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1699{
1700 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1701 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1702 struct sas_task *task = slot->task;
1703 struct mvs_device *mvi_dev = NULL;
1704 struct task_status_struct *tstat;
1705 struct domain_device *dev;
1706 u32 aborted;
1707
1708 void *to;
1709 enum exec_status sts;
1710
1711 if (unlikely(!task || !task->lldd_task || !task->dev))
1712 return -1;
1713
1714 tstat = &task->task_status;
1715 dev = task->dev;
1716 mvi_dev = dev->lldd_dev;
1717
1718 spin_lock(&task->task_state_lock);
1719 task->task_state_flags &=
1720 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1721 task->task_state_flags |= SAS_TASK_STATE_DONE;
1722
1723 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1724 spin_unlock(&task->task_state_lock);
1725
1726 memset(tstat, 0, sizeof(*tstat));
1727 tstat->resp = SAS_TASK_COMPLETE;
1728
1729 if (unlikely(aborted)) {
1730 tstat->stat = SAS_ABORTED_TASK;
1731 if (mvi_dev && mvi_dev->running_req)
1732 mvi_dev->running_req--;
1733 if (sas_protocol_ata(task->task_proto))
1734 mvs_free_reg_set(mvi, mvi_dev);
1735
1736 mvs_slot_task_free(mvi, task, slot, slot_idx);
1737 return -1;
1738 }
1739
1740
1741 if (unlikely(!mvi_dev || flags)) {
1742 if (!mvi_dev)
1743 mv_dprintk("port has not device.\n");
1744 tstat->stat = SAS_PHY_DOWN;
1745 goto out;
1746 }
1747
1748
1749
1750
1751
1752 if (unlikely((rx_desc & RXQ_ERR)
1753 && (*((u32 *)slot->response)
1754 || *(((u32 *)slot->response) + 1)))) {
1755 mv_dprintk("port %d slot %d rx_desc %X has error info"
1756 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1757 rx_desc, get_unaligned_le64(slot->response));
1758 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1759 tstat->resp = SAS_TASK_COMPLETE;
1760 goto out;
1761 }
1762
1763 switch (task->task_proto) {
1764 case SAS_PROTOCOL_SSP:
1765
1766 if (rx_desc & RXQ_GOOD) {
1767 tstat->stat = SAS_SAM_STAT_GOOD;
1768 tstat->resp = SAS_TASK_COMPLETE;
1769 }
1770
1771 else if (rx_desc & RXQ_RSP) {
1772 struct ssp_response_iu *iu = slot->response +
1773 sizeof(struct mvs_err_info);
1774 sas_ssp_task_response(mvi->dev, task, iu);
1775 } else
1776 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
1777 break;
1778
1779 case SAS_PROTOCOL_SMP: {
1780 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1781 tstat->stat = SAS_SAM_STAT_GOOD;
1782 to = kmap_atomic(sg_page(sg_resp));
1783 memcpy(to + sg_resp->offset,
1784 slot->response + sizeof(struct mvs_err_info),
1785 sg_dma_len(sg_resp));
1786 kunmap_atomic(to);
1787 break;
1788 }
1789
1790 case SAS_PROTOCOL_SATA:
1791 case SAS_PROTOCOL_STP:
1792 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1793 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1794 break;
1795 }
1796
1797 default:
1798 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
1799 break;
1800 }
1801 if (!slot->port->port_attached) {
1802 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1803 tstat->stat = SAS_PHY_DOWN;
1804 }
1805
1806
1807out:
1808 if (mvi_dev && mvi_dev->running_req) {
1809 mvi_dev->running_req--;
1810 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1811 mvs_free_reg_set(mvi, mvi_dev);
1812 }
1813 mvs_slot_task_free(mvi, task, slot, slot_idx);
1814 sts = tstat->stat;
1815
1816 spin_unlock(&mvi->lock);
1817 if (task->task_done)
1818 task->task_done(task);
1819
1820 spin_lock(&mvi->lock);
1821
1822 return sts;
1823}
1824
1825void mvs_do_release_task(struct mvs_info *mvi,
1826 int phy_no, struct domain_device *dev)
1827{
1828 u32 slot_idx;
1829 struct mvs_phy *phy;
1830 struct mvs_port *port;
1831 struct mvs_slot_info *slot, *slot2;
1832
1833 phy = &mvi->phy[phy_no];
1834 port = phy->port;
1835 if (!port)
1836 return;
1837
1838 mvs_int_rx(mvi, false);
1839
1840
1841
1842 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1843 struct sas_task *task;
1844 slot_idx = (u32) (slot - mvi->slot_info);
1845 task = slot->task;
1846
1847 if (dev && task->dev != dev)
1848 continue;
1849
1850 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1851 slot_idx, slot->slot_tag, task);
1852 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1853
1854 mvs_slot_complete(mvi, slot_idx, 1);
1855 }
1856}
1857
1858void mvs_release_task(struct mvs_info *mvi,
1859 struct domain_device *dev)
1860{
1861 int i, phyno[WIDE_PORT_MAX_PHY], num;
1862 num = mvs_find_dev_phyno(dev, phyno);
1863 for (i = 0; i < num; i++)
1864 mvs_do_release_task(mvi, phyno[i], dev);
1865}
1866
1867static void mvs_phy_disconnected(struct mvs_phy *phy)
1868{
1869 phy->phy_attached = 0;
1870 phy->att_dev_info = 0;
1871 phy->att_dev_sas_addr = 0;
1872}
1873
1874static void mvs_work_queue(struct work_struct *work)
1875{
1876 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1877 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1878 struct mvs_info *mvi = mwq->mvi;
1879 unsigned long flags;
1880 u32 phy_no = (unsigned long) mwq->data;
1881 struct mvs_phy *phy = &mvi->phy[phy_no];
1882 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1883
1884 spin_lock_irqsave(&mvi->lock, flags);
1885 if (mwq->handler & PHY_PLUG_EVENT) {
1886
1887 if (phy->phy_event & PHY_PLUG_OUT) {
1888 u32 tmp;
1889
1890 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1891 phy->phy_event &= ~PHY_PLUG_OUT;
1892 if (!(tmp & PHY_READY_MASK)) {
1893 sas_phy_disconnected(sas_phy);
1894 mvs_phy_disconnected(phy);
1895 sas_notify_phy_event(sas_phy,
1896 PHYE_LOSS_OF_SIGNAL, GFP_ATOMIC);
1897 mv_dprintk("phy%d Removed Device\n", phy_no);
1898 } else {
1899 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1900 mvs_update_phyinfo(mvi, phy_no, 1);
1901 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC);
1902 mvs_port_notify_formed(sas_phy, 0);
1903 mv_dprintk("phy%d Attached Device\n", phy_no);
1904 }
1905 }
1906 } else if (mwq->handler & EXP_BRCT_CHG) {
1907 phy->phy_event &= ~EXP_BRCT_CHG;
1908 sas_notify_port_event(sas_phy,
1909 PORTE_BROADCAST_RCVD, GFP_ATOMIC);
1910 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1911 }
1912 list_del(&mwq->entry);
1913 spin_unlock_irqrestore(&mvi->lock, flags);
1914 kfree(mwq);
1915}
1916
1917static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1918{
1919 struct mvs_wq *mwq;
1920 int ret = 0;
1921
1922 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1923 if (mwq) {
1924 mwq->mvi = mvi;
1925 mwq->data = data;
1926 mwq->handler = handler;
1927 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1928 list_add_tail(&mwq->entry, &mvi->wq_list);
1929 schedule_delayed_work(&mwq->work_q, HZ * 2);
1930 } else
1931 ret = -ENOMEM;
1932
1933 return ret;
1934}
1935
1936static void mvs_sig_time_out(struct timer_list *t)
1937{
1938 struct mvs_phy *phy = from_timer(phy, t, timer);
1939 struct mvs_info *mvi = phy->mvi;
1940 u8 phy_no;
1941
1942 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1943 if (&mvi->phy[phy_no] == phy) {
1944 mv_dprintk("Get signature time out, reset phy %d\n",
1945 phy_no+mvi->id*mvi->chip->n_phy);
1946 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1947 }
1948 }
1949}
1950
1951void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1952{
1953 u32 tmp;
1954 struct mvs_phy *phy = &mvi->phy[phy_no];
1955
1956 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1957 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1958 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1959 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1960 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1961 phy->irq_status);
1962
1963
1964
1965
1966
1967
1968 if (phy->irq_status & PHYEV_DCDR_ERR) {
1969 mv_dprintk("phy %d STP decoding error.\n",
1970 phy_no + mvi->id*mvi->chip->n_phy);
1971 }
1972
1973 if (phy->irq_status & PHYEV_POOF) {
1974 mdelay(500);
1975 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1976 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1977 int ready;
1978 mvs_do_release_task(mvi, phy_no, NULL);
1979 phy->phy_event |= PHY_PLUG_OUT;
1980 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
1981 mvs_handle_event(mvi,
1982 (void *)(unsigned long)phy_no,
1983 PHY_PLUG_EVENT);
1984 ready = mvs_is_phy_ready(mvi, phy_no);
1985 if (ready || dev_sata) {
1986 if (MVS_CHIP_DISP->stp_reset)
1987 MVS_CHIP_DISP->stp_reset(mvi,
1988 phy_no);
1989 else
1990 MVS_CHIP_DISP->phy_reset(mvi,
1991 phy_no, MVS_SOFT_RESET);
1992 return;
1993 }
1994 }
1995 }
1996
1997 if (phy->irq_status & PHYEV_COMWAKE) {
1998 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
1999 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2000 tmp | PHYEV_SIG_FIS);
2001 if (phy->timer.function == NULL) {
2002 phy->timer.function = mvs_sig_time_out;
2003 phy->timer.expires = jiffies + 5*HZ;
2004 add_timer(&phy->timer);
2005 }
2006 }
2007 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2008 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2009 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2010 if (phy->phy_status) {
2011 mdelay(10);
2012 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2013 if (phy->phy_type & PORT_TYPE_SATA) {
2014 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2015 mvi, phy_no);
2016 tmp &= ~PHYEV_SIG_FIS;
2017 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2018 phy_no, tmp);
2019 }
2020 mvs_update_phyinfo(mvi, phy_no, 0);
2021 if (phy->phy_type & PORT_TYPE_SAS) {
2022 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2023 mdelay(10);
2024 }
2025
2026 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC);
2027
2028 if (phy->phy_event & PHY_PLUG_OUT) {
2029 mvs_port_notify_formed(&phy->sas_phy, 0);
2030 phy->phy_event &= ~PHY_PLUG_OUT;
2031 }
2032 } else {
2033 mv_dprintk("plugin interrupt but phy%d is gone\n",
2034 phy_no + mvi->id*mvi->chip->n_phy);
2035 }
2036 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2037 mv_dprintk("phy %d broadcast change.\n",
2038 phy_no + mvi->id*mvi->chip->n_phy);
2039 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2040 EXP_BRCT_CHG);
2041 }
2042}
2043
2044int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2045{
2046 u32 rx_prod_idx, rx_desc;
2047 bool attn = false;
2048
2049
2050
2051
2052
2053
2054 rx_prod_idx = mvi->rx_cons;
2055 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2056 if (mvi->rx_cons == 0xfff)
2057 return 0;
2058
2059
2060
2061
2062
2063 if (unlikely(mvi->rx_cons == rx_prod_idx))
2064 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2065
2066 if (mvi->rx_cons == rx_prod_idx)
2067 return 0;
2068
2069 while (mvi->rx_cons != rx_prod_idx) {
2070
2071 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2072 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2073
2074 if (likely(rx_desc & RXQ_DONE))
2075 mvs_slot_complete(mvi, rx_desc, 0);
2076 if (rx_desc & RXQ_ATTN) {
2077 attn = true;
2078 } else if (rx_desc & RXQ_ERR) {
2079 if (!(rx_desc & RXQ_DONE))
2080 mvs_slot_complete(mvi, rx_desc, 0);
2081 } else if (rx_desc & RXQ_SLOT_RESET) {
2082 mvs_slot_free(mvi, rx_desc);
2083 }
2084 }
2085
2086 if (attn && self_clear)
2087 MVS_CHIP_DISP->int_full(mvi);
2088 return 0;
2089}
2090
2091int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index,
2092 u8 reg_count, u8 *write_data)
2093{
2094 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
2095 struct mvs_info *mvi = mvs_prv->mvi[0];
2096
2097 if (MVS_CHIP_DISP->gpio_write) {
2098 return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type,
2099 reg_index, reg_count, write_data);
2100 }
2101
2102 return -ENOSYS;
2103}
2104
