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[SCSI] mvsas: fix expander link error
[deliverable/linux.git] / drivers / scsi / mvsas / mv_sas.c
1 /*
2 * Marvell 88SE64xx/88SE94xx main function
3 *
4 * Copyright 2007 Red Hat, Inc.
5 * Copyright 2008 Marvell. <kewei@marvell.com>
6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
7 *
8 * This file is licensed under GPLv2.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; version 2 of the
13 * License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 * USA
24 */
25
26 #include "mv_sas.h"
27
28 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
29 {
30 if (task->lldd_task) {
31 struct mvs_slot_info *slot;
32 slot = task->lldd_task;
33 *tag = slot->slot_tag;
34 return 1;
35 }
36 return 0;
37 }
38
39 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
40 {
41 void *bitmap = mvi->tags;
42 clear_bit(tag, bitmap);
43 }
44
45 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
46 {
47 mvs_tag_clear(mvi, tag);
48 }
49
50 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
51 {
52 void *bitmap = mvi->tags;
53 set_bit(tag, bitmap);
54 }
55
56 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
57 {
58 unsigned int index, tag;
59 void *bitmap = mvi->tags;
60
61 index = find_first_zero_bit(bitmap, mvi->tags_num);
62 tag = index;
63 if (tag >= mvi->tags_num)
64 return -SAS_QUEUE_FULL;
65 mvs_tag_set(mvi, tag);
66 *tag_out = tag;
67 return 0;
68 }
69
70 void mvs_tag_init(struct mvs_info *mvi)
71 {
72 int i;
73 for (i = 0; i < mvi->tags_num; ++i)
74 mvs_tag_clear(mvi, i);
75 }
76
77 struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
78 {
79 unsigned long i = 0, j = 0, hi = 0;
80 struct sas_ha_struct *sha = dev->port->ha;
81 struct mvs_info *mvi = NULL;
82 struct asd_sas_phy *phy;
83
84 while (sha->sas_port[i]) {
85 if (sha->sas_port[i] == dev->port) {
86 phy = container_of(sha->sas_port[i]->phy_list.next,
87 struct asd_sas_phy, port_phy_el);
88 j = 0;
89 while (sha->sas_phy[j]) {
90 if (sha->sas_phy[j] == phy)
91 break;
92 j++;
93 }
94 break;
95 }
96 i++;
97 }
98 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
99 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
100
101 return mvi;
102
103 }
104
105 int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
106 {
107 unsigned long i = 0, j = 0, n = 0, num = 0;
108 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
109 struct mvs_info *mvi = mvi_dev->mvi_info;
110 struct sas_ha_struct *sha = dev->port->ha;
111
112 while (sha->sas_port[i]) {
113 if (sha->sas_port[i] == dev->port) {
114 struct asd_sas_phy *phy;
115 list_for_each_entry(phy,
116 &sha->sas_port[i]->phy_list, port_phy_el) {
117 j = 0;
118 while (sha->sas_phy[j]) {
119 if (sha->sas_phy[j] == phy)
120 break;
121 j++;
122 }
123 phyno[n] = (j >= mvi->chip->n_phy) ?
124 (j - mvi->chip->n_phy) : j;
125 num++;
126 n++;
127 }
128 break;
129 }
130 i++;
131 }
132 return num;
133 }
134
135 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
136 u8 reg_set)
137 {
138 u32 dev_no;
139 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
140 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
141 continue;
142
143 if (mvi->devices[dev_no].taskfileset == reg_set)
144 return &mvi->devices[dev_no];
145 }
146 return NULL;
147 }
148
149 static inline void mvs_free_reg_set(struct mvs_info *mvi,
150 struct mvs_device *dev)
151 {
152 if (!dev) {
153 mv_printk("device has been free.\n");
154 return;
155 }
156 if (dev->taskfileset == MVS_ID_NOT_MAPPED)
157 return;
158 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
159 }
160
161 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
162 struct mvs_device *dev)
163 {
164 if (dev->taskfileset != MVS_ID_NOT_MAPPED)
165 return 0;
166 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
167 }
168
169 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
170 {
171 u32 no;
172 for_each_phy(phy_mask, phy_mask, no) {
173 if (!(phy_mask & 1))
174 continue;
175 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
176 }
177 }
178
179 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
180 void *funcdata)
181 {
182 int rc = 0, phy_id = sas_phy->id;
183 u32 tmp, i = 0, hi;
184 struct sas_ha_struct *sha = sas_phy->ha;
185 struct mvs_info *mvi = NULL;
186
187 while (sha->sas_phy[i]) {
188 if (sha->sas_phy[i] == sas_phy)
189 break;
190 i++;
191 }
192 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
193 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
194
195 switch (func) {
196 case PHY_FUNC_SET_LINK_RATE:
197 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
198 break;
199
200 case PHY_FUNC_HARD_RESET:
201 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
202 if (tmp & PHY_RST_HARD)
203 break;
204 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
205 break;
206
207 case PHY_FUNC_LINK_RESET:
208 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
209 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
210 break;
211
212 case PHY_FUNC_DISABLE:
213 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
214 break;
215 case PHY_FUNC_RELEASE_SPINUP_HOLD:
216 default:
217 rc = -EOPNOTSUPP;
218 }
219 msleep(200);
220 return rc;
221 }
222
223 void __devinit mvs_set_sas_addr(struct mvs_info *mvi, int port_id,
224 u32 off_lo, u32 off_hi, u64 sas_addr)
225 {
226 u32 lo = (u32)sas_addr;
227 u32 hi = (u32)(sas_addr>>32);
228
229 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
230 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
231 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
232 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
233 }
234
235 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
236 {
237 struct mvs_phy *phy = &mvi->phy[i];
238 struct asd_sas_phy *sas_phy = &phy->sas_phy;
239 struct sas_ha_struct *sas_ha;
240 if (!phy->phy_attached)
241 return;
242
243 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
244 && phy->phy_type & PORT_TYPE_SAS) {
245 return;
246 }
247
248 sas_ha = mvi->sas;
249 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
250
251 if (sas_phy->phy) {
252 struct sas_phy *sphy = sas_phy->phy;
253
254 sphy->negotiated_linkrate = sas_phy->linkrate;
255 sphy->minimum_linkrate = phy->minimum_linkrate;
256 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
257 sphy->maximum_linkrate = phy->maximum_linkrate;
258 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
259 }
260
261 if (phy->phy_type & PORT_TYPE_SAS) {
262 struct sas_identify_frame *id;
263
264 id = (struct sas_identify_frame *)phy->frame_rcvd;
265 id->dev_type = phy->identify.device_type;
266 id->initiator_bits = SAS_PROTOCOL_ALL;
267 id->target_bits = phy->identify.target_port_protocols;
268 } else if (phy->phy_type & PORT_TYPE_SATA) {
269 /*Nothing*/
270 }
271 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
272
273 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
274
275 mvi->sas->notify_port_event(sas_phy,
276 PORTE_BYTES_DMAED);
277 }
278
279 void mvs_scan_start(struct Scsi_Host *shost)
280 {
281 int i, j;
282 unsigned short core_nr;
283 struct mvs_info *mvi;
284 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
285 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
286
287 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
288
289 for (j = 0; j < core_nr; j++) {
290 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
291 for (i = 0; i < mvi->chip->n_phy; ++i)
292 mvs_bytes_dmaed(mvi, i);
293 }
294 mvs_prv->scan_finished = 1;
295 }
296
297 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
298 {
299 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
300 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
301
302 if (mvs_prv->scan_finished == 0)
303 return 0;
304
305 scsi_flush_work(shost);
306 return 1;
307 }
308
309 static int mvs_task_prep_smp(struct mvs_info *mvi,
310 struct mvs_task_exec_info *tei)
311 {
312 int elem, rc, i;
313 struct sas_task *task = tei->task;
314 struct mvs_cmd_hdr *hdr = tei->hdr;
315 struct domain_device *dev = task->dev;
316 struct asd_sas_port *sas_port = dev->port;
317 struct scatterlist *sg_req, *sg_resp;
318 u32 req_len, resp_len, tag = tei->tag;
319 void *buf_tmp;
320 u8 *buf_oaf;
321 dma_addr_t buf_tmp_dma;
322 void *buf_prd;
323 struct mvs_slot_info *slot = &mvi->slot_info[tag];
324 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
325
326 /*
327 * DMA-map SMP request, response buffers
328 */
329 sg_req = &task->smp_task.smp_req;
330 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
331 if (!elem)
332 return -ENOMEM;
333 req_len = sg_dma_len(sg_req);
334
335 sg_resp = &task->smp_task.smp_resp;
336 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
337 if (!elem) {
338 rc = -ENOMEM;
339 goto err_out;
340 }
341 resp_len = SB_RFB_MAX;
342
343 /* must be in dwords */
344 if ((req_len & 0x3) || (resp_len & 0x3)) {
345 rc = -EINVAL;
346 goto err_out_2;
347 }
348
349 /*
350 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
351 */
352
353 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
354 buf_tmp = slot->buf;
355 buf_tmp_dma = slot->buf_dma;
356
357 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
358
359 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
360 buf_oaf = buf_tmp;
361 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
362
363 buf_tmp += MVS_OAF_SZ;
364 buf_tmp_dma += MVS_OAF_SZ;
365
366 /* region 3: PRD table *********************************** */
367 buf_prd = buf_tmp;
368 if (tei->n_elem)
369 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
370 else
371 hdr->prd_tbl = 0;
372
373 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
374 buf_tmp += i;
375 buf_tmp_dma += i;
376
377 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
378 slot->response = buf_tmp;
379 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
380 if (mvi->flags & MVF_FLAG_SOC)
381 hdr->reserved[0] = 0;
382
383 /*
384 * Fill in TX ring and command slot header
385 */
386 slot->tx = mvi->tx_prod;
387 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
388 TXQ_MODE_I | tag |
389 (sas_port->phy_mask << TXQ_PHY_SHIFT));
390
391 hdr->flags |= flags;
392 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
393 hdr->tags = cpu_to_le32(tag);
394 hdr->data_len = 0;
395
396 /* generate open address frame hdr (first 12 bytes) */
397 /* initiator, SMP, ftype 1h */
398 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
399 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
400 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
401 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
402
403 /* fill in PRD (scatter/gather) table, if any */
404 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
405
406 return 0;
407
408 err_out_2:
409 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
410 PCI_DMA_FROMDEVICE);
411 err_out:
412 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
413 PCI_DMA_TODEVICE);
414 return rc;
415 }
416
417 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
418 {
419 struct ata_queued_cmd *qc = task->uldd_task;
420
421 if (qc) {
422 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
423 qc->tf.command == ATA_CMD_FPDMA_READ) {
424 *tag = qc->tag;
425 return 1;
426 }
427 }
428
429 return 0;
430 }
431
432 static int mvs_task_prep_ata(struct mvs_info *mvi,
433 struct mvs_task_exec_info *tei)
434 {
435 struct sas_task *task = tei->task;
436 struct domain_device *dev = task->dev;
437 struct mvs_device *mvi_dev = dev->lldd_dev;
438 struct mvs_cmd_hdr *hdr = tei->hdr;
439 struct asd_sas_port *sas_port = dev->port;
440 struct mvs_slot_info *slot;
441 void *buf_prd;
442 u32 tag = tei->tag, hdr_tag;
443 u32 flags, del_q;
444 void *buf_tmp;
445 u8 *buf_cmd, *buf_oaf;
446 dma_addr_t buf_tmp_dma;
447 u32 i, req_len, resp_len;
448 const u32 max_resp_len = SB_RFB_MAX;
449
450 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
451 mv_dprintk("Have not enough regiset for dev %d.\n",
452 mvi_dev->device_id);
453 return -EBUSY;
454 }
455 slot = &mvi->slot_info[tag];
456 slot->tx = mvi->tx_prod;
457 del_q = TXQ_MODE_I | tag |
458 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
459 (sas_port->phy_mask << TXQ_PHY_SHIFT) |
460 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
461 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
462
463 if (task->data_dir == DMA_FROM_DEVICE)
464 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
465 else
466 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
467
468 if (task->ata_task.use_ncq)
469 flags |= MCH_FPDMA;
470 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
471 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
472 flags |= MCH_ATAPI;
473 }
474
475 hdr->flags = cpu_to_le32(flags);
476
477 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
478 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
479 else
480 hdr_tag = tag;
481
482 hdr->tags = cpu_to_le32(hdr_tag);
483
484 hdr->data_len = cpu_to_le32(task->total_xfer_len);
485
486 /*
487 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
488 */
489
490 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
491 buf_cmd = buf_tmp = slot->buf;
492 buf_tmp_dma = slot->buf_dma;
493
494 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
495
496 buf_tmp += MVS_ATA_CMD_SZ;
497 buf_tmp_dma += MVS_ATA_CMD_SZ;
498
499 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
500 /* used for STP. unused for SATA? */
501 buf_oaf = buf_tmp;
502 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
503
504 buf_tmp += MVS_OAF_SZ;
505 buf_tmp_dma += MVS_OAF_SZ;
506
507 /* region 3: PRD table ********************************************* */
508 buf_prd = buf_tmp;
509
510 if (tei->n_elem)
511 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
512 else
513 hdr->prd_tbl = 0;
514 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
515
516 buf_tmp += i;
517 buf_tmp_dma += i;
518
519 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
520 slot->response = buf_tmp;
521 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
522 if (mvi->flags & MVF_FLAG_SOC)
523 hdr->reserved[0] = 0;
524
525 req_len = sizeof(struct host_to_dev_fis);
526 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
527 sizeof(struct mvs_err_info) - i;
528
529 /* request, response lengths */
530 resp_len = min(resp_len, max_resp_len);
531 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
532
533 if (likely(!task->ata_task.device_control_reg_update))
534 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
535 /* fill in command FIS and ATAPI CDB */
536 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
537 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
538 memcpy(buf_cmd + STP_ATAPI_CMD,
539 task->ata_task.atapi_packet, 16);
540
541 /* generate open address frame hdr (first 12 bytes) */
542 /* initiator, STP, ftype 1h */
543 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
544 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
545 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
546 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
547
548 /* fill in PRD (scatter/gather) table, if any */
549 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
550
551 if (task->data_dir == DMA_FROM_DEVICE)
552 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
553 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
554
555 return 0;
556 }
557
558 static int mvs_task_prep_ssp(struct mvs_info *mvi,
559 struct mvs_task_exec_info *tei, int is_tmf,
560 struct mvs_tmf_task *tmf)
561 {
562 struct sas_task *task = tei->task;
563 struct mvs_cmd_hdr *hdr = tei->hdr;
564 struct mvs_port *port = tei->port;
565 struct domain_device *dev = task->dev;
566 struct mvs_device *mvi_dev = dev->lldd_dev;
567 struct asd_sas_port *sas_port = dev->port;
568 struct mvs_slot_info *slot;
569 void *buf_prd;
570 struct ssp_frame_hdr *ssp_hdr;
571 void *buf_tmp;
572 u8 *buf_cmd, *buf_oaf, fburst = 0;
573 dma_addr_t buf_tmp_dma;
574 u32 flags;
575 u32 resp_len, req_len, i, tag = tei->tag;
576 const u32 max_resp_len = SB_RFB_MAX;
577 u32 phy_mask;
578
579 slot = &mvi->slot_info[tag];
580
581 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
582 sas_port->phy_mask) & TXQ_PHY_MASK;
583
584 slot->tx = mvi->tx_prod;
585 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
586 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
587 (phy_mask << TXQ_PHY_SHIFT));
588
589 flags = MCH_RETRY;
590 if (task->ssp_task.enable_first_burst) {
591 flags |= MCH_FBURST;
592 fburst = (1 << 7);
593 }
594 if (is_tmf)
595 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
596 else
597 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
598
599 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
600 hdr->tags = cpu_to_le32(tag);
601 hdr->data_len = cpu_to_le32(task->total_xfer_len);
602
603 /*
604 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
605 */
606
607 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
608 buf_cmd = buf_tmp = slot->buf;
609 buf_tmp_dma = slot->buf_dma;
610
611 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
612
613 buf_tmp += MVS_SSP_CMD_SZ;
614 buf_tmp_dma += MVS_SSP_CMD_SZ;
615
616 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
617 buf_oaf = buf_tmp;
618 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
619
620 buf_tmp += MVS_OAF_SZ;
621 buf_tmp_dma += MVS_OAF_SZ;
622
623 /* region 3: PRD table ********************************************* */
624 buf_prd = buf_tmp;
625 if (tei->n_elem)
626 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
627 else
628 hdr->prd_tbl = 0;
629
630 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
631 buf_tmp += i;
632 buf_tmp_dma += i;
633
634 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
635 slot->response = buf_tmp;
636 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
637 if (mvi->flags & MVF_FLAG_SOC)
638 hdr->reserved[0] = 0;
639
640 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
641 sizeof(struct mvs_err_info) - i;
642 resp_len = min(resp_len, max_resp_len);
643
644 req_len = sizeof(struct ssp_frame_hdr) + 28;
645
646 /* request, response lengths */
647 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
648
649 /* generate open address frame hdr (first 12 bytes) */
650 /* initiator, SSP, ftype 1h */
651 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
652 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
653 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
654 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
655
656 /* fill in SSP frame header (Command Table.SSP frame header) */
657 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
658
659 if (is_tmf)
660 ssp_hdr->frame_type = SSP_TASK;
661 else
662 ssp_hdr->frame_type = SSP_COMMAND;
663
664 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
665 HASHED_SAS_ADDR_SIZE);
666 memcpy(ssp_hdr->hashed_src_addr,
667 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
668 ssp_hdr->tag = cpu_to_be16(tag);
669
670 /* fill in IU for TASK and Command Frame */
671 buf_cmd += sizeof(*ssp_hdr);
672 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
673
674 if (ssp_hdr->frame_type != SSP_TASK) {
675 buf_cmd[9] = fburst | task->ssp_task.task_attr |
676 (task->ssp_task.task_prio << 3);
677 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
678 } else{
679 buf_cmd[10] = tmf->tmf;
680 switch (tmf->tmf) {
681 case TMF_ABORT_TASK:
682 case TMF_QUERY_TASK:
683 buf_cmd[12] =
684 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
685 buf_cmd[13] =
686 tmf->tag_of_task_to_be_managed & 0xff;
687 break;
688 default:
689 break;
690 }
691 }
692 /* fill in PRD (scatter/gather) table, if any */
693 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
694 return 0;
695 }
696
697 #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE)))
698 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
699 struct mvs_tmf_task *tmf, int *pass)
700 {
701 struct domain_device *dev = task->dev;
702 struct mvs_device *mvi_dev = dev->lldd_dev;
703 struct mvs_task_exec_info tei;
704 struct mvs_slot_info *slot;
705 u32 tag = 0xdeadbeef, n_elem = 0;
706 int rc = 0;
707
708 if (!dev->port) {
709 struct task_status_struct *tsm = &task->task_status;
710
711 tsm->resp = SAS_TASK_UNDELIVERED;
712 tsm->stat = SAS_PHY_DOWN;
713 /*
714 * libsas will use dev->port, should
715 * not call task_done for sata
716 */
717 if (dev->dev_type != SATA_DEV)
718 task->task_done(task);
719 return rc;
720 }
721
722 if (DEV_IS_GONE(mvi_dev)) {
723 if (mvi_dev)
724 mv_dprintk("device %d not ready.\n",
725 mvi_dev->device_id);
726 else
727 mv_dprintk("device %016llx not ready.\n",
728 SAS_ADDR(dev->sas_addr));
729
730 rc = SAS_PHY_DOWN;
731 return rc;
732 }
733 tei.port = dev->port->lldd_port;
734 if (tei.port && !tei.port->port_attached && !tmf) {
735 if (sas_protocol_ata(task->task_proto)) {
736 struct task_status_struct *ts = &task->task_status;
737 mv_dprintk("SATA/STP port %d does not attach"
738 "device.\n", dev->port->id);
739 ts->resp = SAS_TASK_COMPLETE;
740 ts->stat = SAS_PHY_DOWN;
741
742 task->task_done(task);
743
744 } else {
745 struct task_status_struct *ts = &task->task_status;
746 mv_dprintk("SAS port %d does not attach"
747 "device.\n", dev->port->id);
748 ts->resp = SAS_TASK_UNDELIVERED;
749 ts->stat = SAS_PHY_DOWN;
750 task->task_done(task);
751 }
752 return rc;
753 }
754
755 if (!sas_protocol_ata(task->task_proto)) {
756 if (task->num_scatter) {
757 n_elem = dma_map_sg(mvi->dev,
758 task->scatter,
759 task->num_scatter,
760 task->data_dir);
761 if (!n_elem) {
762 rc = -ENOMEM;
763 goto prep_out;
764 }
765 }
766 } else {
767 n_elem = task->num_scatter;
768 }
769
770 rc = mvs_tag_alloc(mvi, &tag);
771 if (rc)
772 goto err_out;
773
774 slot = &mvi->slot_info[tag];
775
776 task->lldd_task = NULL;
777 slot->n_elem = n_elem;
778 slot->slot_tag = tag;
779
780 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
781 if (!slot->buf)
782 goto err_out_tag;
783 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
784
785 tei.task = task;
786 tei.hdr = &mvi->slot[tag];
787 tei.tag = tag;
788 tei.n_elem = n_elem;
789 switch (task->task_proto) {
790 case SAS_PROTOCOL_SMP:
791 rc = mvs_task_prep_smp(mvi, &tei);
792 break;
793 case SAS_PROTOCOL_SSP:
794 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
795 break;
796 case SAS_PROTOCOL_SATA:
797 case SAS_PROTOCOL_STP:
798 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
799 rc = mvs_task_prep_ata(mvi, &tei);
800 break;
801 default:
802 dev_printk(KERN_ERR, mvi->dev,
803 "unknown sas_task proto: 0x%x\n",
804 task->task_proto);
805 rc = -EINVAL;
806 break;
807 }
808
809 if (rc) {
810 mv_dprintk("rc is %x\n", rc);
811 goto err_out_slot_buf;
812 }
813 slot->task = task;
814 slot->port = tei.port;
815 task->lldd_task = slot;
816 list_add_tail(&slot->entry, &tei.port->list);
817 spin_lock(&task->task_state_lock);
818 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
819 spin_unlock(&task->task_state_lock);
820
821 mvi_dev->running_req++;
822 ++(*pass);
823 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
824
825 return rc;
826
827 err_out_slot_buf:
828 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
829 err_out_tag:
830 mvs_tag_free(mvi, tag);
831 err_out:
832
833 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
834 if (!sas_protocol_ata(task->task_proto))
835 if (n_elem)
836 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
837 task->data_dir);
838 prep_out:
839 return rc;
840 }
841
842 static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags)
843 {
844 struct mvs_task_list *first = NULL;
845
846 for (; *num > 0; --*num) {
847 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags);
848
849 if (!mvs_list)
850 break;
851
852 INIT_LIST_HEAD(&mvs_list->list);
853 if (!first)
854 first = mvs_list;
855 else
856 list_add_tail(&mvs_list->list, &first->list);
857
858 }
859
860 return first;
861 }
862
863 static inline void mvs_task_free_list(struct mvs_task_list *mvs_list)
864 {
865 LIST_HEAD(list);
866 struct list_head *pos, *a;
867 struct mvs_task_list *mlist = NULL;
868
869 __list_add(&list, mvs_list->list.prev, &mvs_list->list);
870
871 list_for_each_safe(pos, a, &list) {
872 list_del_init(pos);
873 mlist = list_entry(pos, struct mvs_task_list, list);
874 kmem_cache_free(mvs_task_list_cache, mlist);
875 }
876 }
877
878 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
879 struct completion *completion, int is_tmf,
880 struct mvs_tmf_task *tmf)
881 {
882 struct domain_device *dev = task->dev;
883 struct mvs_info *mvi = NULL;
884 u32 rc = 0;
885 u32 pass = 0;
886 unsigned long flags = 0;
887
888 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
889
890 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL))
891 spin_unlock_irq(dev->sata_dev.ap->lock);
892
893 spin_lock_irqsave(&mvi->lock, flags);
894 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
895 if (rc)
896 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
897
898 if (likely(pass))
899 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
900 (MVS_CHIP_SLOT_SZ - 1));
901 spin_unlock_irqrestore(&mvi->lock, flags);
902
903 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL))
904 spin_lock_irq(dev->sata_dev.ap->lock);
905
906 return rc;
907 }
908
909 static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
910 struct completion *completion, int is_tmf,
911 struct mvs_tmf_task *tmf)
912 {
913 struct domain_device *dev = task->dev;
914 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha;
915 struct mvs_info *mvi = NULL;
916 struct sas_task *t = task;
917 struct mvs_task_list *mvs_list = NULL, *a;
918 LIST_HEAD(q);
919 int pass[2] = {0};
920 u32 rc = 0;
921 u32 n = num;
922 unsigned long flags = 0;
923
924 mvs_list = mvs_task_alloc_list(&n, gfp_flags);
925 if (n) {
926 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__);
927 rc = -ENOMEM;
928 goto free_list;
929 }
930
931 __list_add(&q, mvs_list->list.prev, &mvs_list->list);
932
933 list_for_each_entry(a, &q, list) {
934 a->task = t;
935 t = list_entry(t->list.next, struct sas_task, list);
936 }
937
938 list_for_each_entry(a, &q , list) {
939
940 t = a->task;
941 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info;
942
943 spin_lock_irqsave(&mvi->lock, flags);
944 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]);
945 if (rc)
946 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
947 spin_unlock_irqrestore(&mvi->lock, flags);
948 }
949
950 if (likely(pass[0]))
951 MVS_CHIP_DISP->start_delivery(mpi->mvi[0],
952 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
953
954 if (likely(pass[1]))
955 MVS_CHIP_DISP->start_delivery(mpi->mvi[1],
956 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
957
958 list_del_init(&q);
959
960 free_list:
961 if (mvs_list)
962 mvs_task_free_list(mvs_list);
963
964 return rc;
965 }
966
967 int mvs_queue_command(struct sas_task *task, const int num,
968 gfp_t gfp_flags)
969 {
970 struct mvs_device *mvi_dev = task->dev->lldd_dev;
971 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas;
972
973 if (sas->lldd_max_execute_num < 2)
974 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL);
975 else
976 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL);
977 }
978
979 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
980 {
981 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
982 mvs_tag_clear(mvi, slot_idx);
983 }
984
985 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
986 struct mvs_slot_info *slot, u32 slot_idx)
987 {
988 if (!slot->task)
989 return;
990 if (!sas_protocol_ata(task->task_proto))
991 if (slot->n_elem)
992 dma_unmap_sg(mvi->dev, task->scatter,
993 slot->n_elem, task->data_dir);
994
995 switch (task->task_proto) {
996 case SAS_PROTOCOL_SMP:
997 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
998 PCI_DMA_FROMDEVICE);
999 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
1000 PCI_DMA_TODEVICE);
1001 break;
1002
1003 case SAS_PROTOCOL_SATA:
1004 case SAS_PROTOCOL_STP:
1005 case SAS_PROTOCOL_SSP:
1006 default:
1007 /* do nothing */
1008 break;
1009 }
1010
1011 if (slot->buf) {
1012 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
1013 slot->buf = NULL;
1014 }
1015 list_del_init(&slot->entry);
1016 task->lldd_task = NULL;
1017 slot->task = NULL;
1018 slot->port = NULL;
1019 slot->slot_tag = 0xFFFFFFFF;
1020 mvs_slot_free(mvi, slot_idx);
1021 }
1022
1023 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
1024 {
1025 struct mvs_phy *phy = &mvi->phy[phy_no];
1026 struct mvs_port *port = phy->port;
1027 int j, no;
1028
1029 for_each_phy(port->wide_port_phymap, j, no) {
1030 if (j & 1) {
1031 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1032 PHYR_WIDE_PORT);
1033 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1034 port->wide_port_phymap);
1035 } else {
1036 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1037 PHYR_WIDE_PORT);
1038 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1039 0);
1040 }
1041 }
1042 }
1043
1044 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
1045 {
1046 u32 tmp;
1047 struct mvs_phy *phy = &mvi->phy[i];
1048 struct mvs_port *port = phy->port;
1049
1050 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
1051 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
1052 if (!port)
1053 phy->phy_attached = 1;
1054 return tmp;
1055 }
1056
1057 if (port) {
1058 if (phy->phy_type & PORT_TYPE_SAS) {
1059 port->wide_port_phymap &= ~(1U << i);
1060 if (!port->wide_port_phymap)
1061 port->port_attached = 0;
1062 mvs_update_wideport(mvi, i);
1063 } else if (phy->phy_type & PORT_TYPE_SATA)
1064 port->port_attached = 0;
1065 phy->port = NULL;
1066 phy->phy_attached = 0;
1067 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1068 }
1069 return 0;
1070 }
1071
1072 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
1073 {
1074 u32 *s = (u32 *) buf;
1075
1076 if (!s)
1077 return NULL;
1078
1079 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
1080 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1081
1082 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
1083 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1084
1085 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
1086 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1087
1088 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
1089 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1090
1091 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
1092 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1093
1094 return s;
1095 }
1096
1097 static u32 mvs_is_sig_fis_received(u32 irq_status)
1098 {
1099 return irq_status & PHYEV_SIG_FIS;
1100 }
1101
1102 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1103 {
1104 if (phy->timer.function)
1105 del_timer(&phy->timer);
1106 phy->timer.function = NULL;
1107 }
1108
1109 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1110 {
1111 struct mvs_phy *phy = &mvi->phy[i];
1112 struct sas_identify_frame *id;
1113
1114 id = (struct sas_identify_frame *)phy->frame_rcvd;
1115
1116 if (get_st) {
1117 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1118 phy->phy_status = mvs_is_phy_ready(mvi, i);
1119 }
1120
1121 if (phy->phy_status) {
1122 int oob_done = 0;
1123 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1124
1125 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1126
1127 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1128 if (phy->phy_type & PORT_TYPE_SATA) {
1129 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1130 if (mvs_is_sig_fis_received(phy->irq_status)) {
1131 mvs_sig_remove_timer(phy);
1132 phy->phy_attached = 1;
1133 phy->att_dev_sas_addr =
1134 i + mvi->id * mvi->chip->n_phy;
1135 if (oob_done)
1136 sas_phy->oob_mode = SATA_OOB_MODE;
1137 phy->frame_rcvd_size =
1138 sizeof(struct dev_to_host_fis);
1139 mvs_get_d2h_reg(mvi, i, id);
1140 } else {
1141 u32 tmp;
1142 dev_printk(KERN_DEBUG, mvi->dev,
1143 "Phy%d : No sig fis\n", i);
1144 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1145 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1146 tmp | PHYEV_SIG_FIS);
1147 phy->phy_attached = 0;
1148 phy->phy_type &= ~PORT_TYPE_SATA;
1149 goto out_done;
1150 }
1151 } else if (phy->phy_type & PORT_TYPE_SAS
1152 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1153 phy->phy_attached = 1;
1154 phy->identify.device_type =
1155 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1156
1157 if (phy->identify.device_type == SAS_END_DEV)
1158 phy->identify.target_port_protocols =
1159 SAS_PROTOCOL_SSP;
1160 else if (phy->identify.device_type != NO_DEVICE)
1161 phy->identify.target_port_protocols =
1162 SAS_PROTOCOL_SMP;
1163 if (oob_done)
1164 sas_phy->oob_mode = SAS_OOB_MODE;
1165 phy->frame_rcvd_size =
1166 sizeof(struct sas_identify_frame);
1167 }
1168 memcpy(sas_phy->attached_sas_addr,
1169 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1170
1171 if (MVS_CHIP_DISP->phy_work_around)
1172 MVS_CHIP_DISP->phy_work_around(mvi, i);
1173 }
1174 mv_dprintk("phy %d attach dev info is %x\n",
1175 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1176 mv_dprintk("phy %d attach sas addr is %llx\n",
1177 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1178 out_done:
1179 if (get_st)
1180 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1181 }
1182
1183 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1184 {
1185 struct sas_ha_struct *sas_ha = sas_phy->ha;
1186 struct mvs_info *mvi = NULL; int i = 0, hi;
1187 struct mvs_phy *phy = sas_phy->lldd_phy;
1188 struct asd_sas_port *sas_port = sas_phy->port;
1189 struct mvs_port *port;
1190 unsigned long flags = 0;
1191 if (!sas_port)
1192 return;
1193
1194 while (sas_ha->sas_phy[i]) {
1195 if (sas_ha->sas_phy[i] == sas_phy)
1196 break;
1197 i++;
1198 }
1199 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1200 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1201 if (i >= mvi->chip->n_phy)
1202 port = &mvi->port[i - mvi->chip->n_phy];
1203 else
1204 port = &mvi->port[i];
1205 if (lock)
1206 spin_lock_irqsave(&mvi->lock, flags);
1207 port->port_attached = 1;
1208 phy->port = port;
1209 sas_port->lldd_port = port;
1210 if (phy->phy_type & PORT_TYPE_SAS) {
1211 port->wide_port_phymap = sas_port->phy_mask;
1212 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1213 mvs_update_wideport(mvi, sas_phy->id);
1214 }
1215 if (lock)
1216 spin_unlock_irqrestore(&mvi->lock, flags);
1217 }
1218
1219 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1220 {
1221 struct domain_device *dev;
1222 struct mvs_phy *phy = sas_phy->lldd_phy;
1223 struct mvs_info *mvi = phy->mvi;
1224 struct asd_sas_port *port = sas_phy->port;
1225 int phy_no = 0;
1226
1227 while (phy != &mvi->phy[phy_no]) {
1228 phy_no++;
1229 if (phy_no >= MVS_MAX_PHYS)
1230 return;
1231 }
1232 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1233 mvs_do_release_task(phy->mvi, phy_no, dev);
1234
1235 }
1236
1237
1238 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1239 {
1240 mvs_port_notify_formed(sas_phy, 1);
1241 }
1242
1243 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1244 {
1245 mvs_port_notify_deformed(sas_phy, 1);
1246 }
1247
1248 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1249 {
1250 u32 dev;
1251 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1252 if (mvi->devices[dev].dev_type == NO_DEVICE) {
1253 mvi->devices[dev].device_id = dev;
1254 return &mvi->devices[dev];
1255 }
1256 }
1257
1258 if (dev == MVS_MAX_DEVICES)
1259 mv_printk("max support %d devices, ignore ..\n",
1260 MVS_MAX_DEVICES);
1261
1262 return NULL;
1263 }
1264
1265 void mvs_free_dev(struct mvs_device *mvi_dev)
1266 {
1267 u32 id = mvi_dev->device_id;
1268 memset(mvi_dev, 0, sizeof(*mvi_dev));
1269 mvi_dev->device_id = id;
1270 mvi_dev->dev_type = NO_DEVICE;
1271 mvi_dev->dev_status = MVS_DEV_NORMAL;
1272 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1273 }
1274
1275 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1276 {
1277 unsigned long flags = 0;
1278 int res = 0;
1279 struct mvs_info *mvi = NULL;
1280 struct domain_device *parent_dev = dev->parent;
1281 struct mvs_device *mvi_device;
1282
1283 mvi = mvs_find_dev_mvi(dev);
1284
1285 if (lock)
1286 spin_lock_irqsave(&mvi->lock, flags);
1287
1288 mvi_device = mvs_alloc_dev(mvi);
1289 if (!mvi_device) {
1290 res = -1;
1291 goto found_out;
1292 }
1293 dev->lldd_dev = mvi_device;
1294 mvi_device->dev_status = MVS_DEV_NORMAL;
1295 mvi_device->dev_type = dev->dev_type;
1296 mvi_device->mvi_info = mvi;
1297 mvi_device->sas_device = dev;
1298 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1299 int phy_id;
1300 u8 phy_num = parent_dev->ex_dev.num_phys;
1301 struct ex_phy *phy;
1302 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1303 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1304 if (SAS_ADDR(phy->attached_sas_addr) ==
1305 SAS_ADDR(dev->sas_addr)) {
1306 mvi_device->attached_phy = phy_id;
1307 break;
1308 }
1309 }
1310
1311 if (phy_id == phy_num) {
1312 mv_printk("Error: no attached dev:%016llx"
1313 "at ex:%016llx.\n",
1314 SAS_ADDR(dev->sas_addr),
1315 SAS_ADDR(parent_dev->sas_addr));
1316 res = -1;
1317 }
1318 }
1319
1320 found_out:
1321 if (lock)
1322 spin_unlock_irqrestore(&mvi->lock, flags);
1323 return res;
1324 }
1325
1326 int mvs_dev_found(struct domain_device *dev)
1327 {
1328 return mvs_dev_found_notify(dev, 1);
1329 }
1330
1331 void mvs_dev_gone_notify(struct domain_device *dev)
1332 {
1333 unsigned long flags = 0;
1334 struct mvs_device *mvi_dev = dev->lldd_dev;
1335 struct mvs_info *mvi = mvi_dev->mvi_info;
1336
1337 spin_lock_irqsave(&mvi->lock, flags);
1338
1339 if (mvi_dev) {
1340 mv_dprintk("found dev[%d:%x] is gone.\n",
1341 mvi_dev->device_id, mvi_dev->dev_type);
1342 mvs_release_task(mvi, dev);
1343 mvs_free_reg_set(mvi, mvi_dev);
1344 mvs_free_dev(mvi_dev);
1345 } else {
1346 mv_dprintk("found dev has gone.\n");
1347 }
1348 dev->lldd_dev = NULL;
1349 mvi_dev->sas_device = NULL;
1350
1351 spin_unlock_irqrestore(&mvi->lock, flags);
1352 }
1353
1354
1355 void mvs_dev_gone(struct domain_device *dev)
1356 {
1357 mvs_dev_gone_notify(dev);
1358 }
1359
1360 static void mvs_task_done(struct sas_task *task)
1361 {
1362 if (!del_timer(&task->timer))
1363 return;
1364 complete(&task->completion);
1365 }
1366
1367 static void mvs_tmf_timedout(unsigned long data)
1368 {
1369 struct sas_task *task = (struct sas_task *)data;
1370
1371 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1372 complete(&task->completion);
1373 }
1374
1375 #define MVS_TASK_TIMEOUT 20
1376 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1377 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1378 {
1379 int res, retry;
1380 struct sas_task *task = NULL;
1381
1382 for (retry = 0; retry < 3; retry++) {
1383 task = sas_alloc_task(GFP_KERNEL);
1384 if (!task)
1385 return -ENOMEM;
1386
1387 task->dev = dev;
1388 task->task_proto = dev->tproto;
1389
1390 memcpy(&task->ssp_task, parameter, para_len);
1391 task->task_done = mvs_task_done;
1392
1393 task->timer.data = (unsigned long) task;
1394 task->timer.function = mvs_tmf_timedout;
1395 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1396 add_timer(&task->timer);
1397
1398 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1399
1400 if (res) {
1401 del_timer(&task->timer);
1402 mv_printk("executing internel task failed:%d\n", res);
1403 goto ex_err;
1404 }
1405
1406 wait_for_completion(&task->completion);
1407 res = TMF_RESP_FUNC_FAILED;
1408 /* Even TMF timed out, return direct. */
1409 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1410 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1411 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1412 goto ex_err;
1413 }
1414 }
1415
1416 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1417 task->task_status.stat == SAM_STAT_GOOD) {
1418 res = TMF_RESP_FUNC_COMPLETE;
1419 break;
1420 }
1421
1422 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1423 task->task_status.stat == SAS_DATA_UNDERRUN) {
1424 /* no error, but return the number of bytes of
1425 * underrun */
1426 res = task->task_status.residual;
1427 break;
1428 }
1429
1430 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1431 task->task_status.stat == SAS_DATA_OVERRUN) {
1432 mv_dprintk("blocked task error.\n");
1433 res = -EMSGSIZE;
1434 break;
1435 } else {
1436 mv_dprintk(" task to dev %016llx response: 0x%x "
1437 "status 0x%x\n",
1438 SAS_ADDR(dev->sas_addr),
1439 task->task_status.resp,
1440 task->task_status.stat);
1441 sas_free_task(task);
1442 task = NULL;
1443
1444 }
1445 }
1446 ex_err:
1447 BUG_ON(retry == 3 && task != NULL);
1448 sas_free_task(task);
1449 return res;
1450 }
1451
1452 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1453 u8 *lun, struct mvs_tmf_task *tmf)
1454 {
1455 struct sas_ssp_task ssp_task;
1456 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1457 return TMF_RESP_FUNC_ESUPP;
1458
1459 memcpy(ssp_task.LUN, lun, 8);
1460
1461 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1462 sizeof(ssp_task), tmf);
1463 }
1464
1465
1466 /* Standard mandates link reset for ATA (type 0)
1467 and hard reset for SSP (type 1) , only for RECOVERY */
1468 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1469 {
1470 int rc;
1471 struct sas_phy *phy = sas_find_local_phy(dev);
1472 int reset_type = (dev->dev_type == SATA_DEV ||
1473 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1474 rc = sas_phy_reset(phy, reset_type);
1475 msleep(2000);
1476 return rc;
1477 }
1478
1479 /* mandatory SAM-3 */
1480 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1481 {
1482 unsigned long flags;
1483 int rc = TMF_RESP_FUNC_FAILED;
1484 struct mvs_tmf_task tmf_task;
1485 struct mvs_device * mvi_dev = dev->lldd_dev;
1486 struct mvs_info *mvi = mvi_dev->mvi_info;
1487
1488 tmf_task.tmf = TMF_LU_RESET;
1489 mvi_dev->dev_status = MVS_DEV_EH;
1490 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1491 if (rc == TMF_RESP_FUNC_COMPLETE) {
1492 spin_lock_irqsave(&mvi->lock, flags);
1493 mvs_release_task(mvi, dev);
1494 spin_unlock_irqrestore(&mvi->lock, flags);
1495 }
1496 /* If failed, fall-through I_T_Nexus reset */
1497 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1498 mvi_dev->device_id, rc);
1499 return rc;
1500 }
1501
1502 int mvs_I_T_nexus_reset(struct domain_device *dev)
1503 {
1504 unsigned long flags;
1505 int rc = TMF_RESP_FUNC_FAILED;
1506 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1507 struct mvs_info *mvi = mvi_dev->mvi_info;
1508
1509 if (mvi_dev->dev_status != MVS_DEV_EH)
1510 return TMF_RESP_FUNC_COMPLETE;
1511 else
1512 mvi_dev->dev_status = MVS_DEV_NORMAL;
1513 rc = mvs_debug_I_T_nexus_reset(dev);
1514 mv_printk("%s for device[%x]:rc= %d\n",
1515 __func__, mvi_dev->device_id, rc);
1516
1517 spin_lock_irqsave(&mvi->lock, flags);
1518 mvs_release_task(mvi, dev);
1519 spin_unlock_irqrestore(&mvi->lock, flags);
1520
1521 return rc;
1522 }
1523 /* optional SAM-3 */
1524 int mvs_query_task(struct sas_task *task)
1525 {
1526 u32 tag;
1527 struct scsi_lun lun;
1528 struct mvs_tmf_task tmf_task;
1529 int rc = TMF_RESP_FUNC_FAILED;
1530
1531 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1532 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1533 struct domain_device *dev = task->dev;
1534 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1535 struct mvs_info *mvi = mvi_dev->mvi_info;
1536
1537 int_to_scsilun(cmnd->device->lun, &lun);
1538 rc = mvs_find_tag(mvi, task, &tag);
1539 if (rc == 0) {
1540 rc = TMF_RESP_FUNC_FAILED;
1541 return rc;
1542 }
1543
1544 tmf_task.tmf = TMF_QUERY_TASK;
1545 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1546
1547 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1548 switch (rc) {
1549 /* The task is still in Lun, release it then */
1550 case TMF_RESP_FUNC_SUCC:
1551 /* The task is not in Lun or failed, reset the phy */
1552 case TMF_RESP_FUNC_FAILED:
1553 case TMF_RESP_FUNC_COMPLETE:
1554 break;
1555 }
1556 }
1557 mv_printk("%s:rc= %d\n", __func__, rc);
1558 return rc;
1559 }
1560
1561 /* mandatory SAM-3, still need free task/slot info */
1562 int mvs_abort_task(struct sas_task *task)
1563 {
1564 struct scsi_lun lun;
1565 struct mvs_tmf_task tmf_task;
1566 struct domain_device *dev = task->dev;
1567 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1568 struct mvs_info *mvi;
1569 int rc = TMF_RESP_FUNC_FAILED;
1570 unsigned long flags;
1571 u32 tag;
1572
1573 if (!mvi_dev) {
1574 mv_printk("Device has removed\n");
1575 return TMF_RESP_FUNC_FAILED;
1576 }
1577
1578 mvi = mvi_dev->mvi_info;
1579
1580 spin_lock_irqsave(&task->task_state_lock, flags);
1581 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1582 spin_unlock_irqrestore(&task->task_state_lock, flags);
1583 rc = TMF_RESP_FUNC_COMPLETE;
1584 goto out;
1585 }
1586 spin_unlock_irqrestore(&task->task_state_lock, flags);
1587 mvi_dev->dev_status = MVS_DEV_EH;
1588 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1589 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1590
1591 int_to_scsilun(cmnd->device->lun, &lun);
1592 rc = mvs_find_tag(mvi, task, &tag);
1593 if (rc == 0) {
1594 mv_printk("No such tag in %s\n", __func__);
1595 rc = TMF_RESP_FUNC_FAILED;
1596 return rc;
1597 }
1598
1599 tmf_task.tmf = TMF_ABORT_TASK;
1600 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1601
1602 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1603
1604 /* if successful, clear the task and callback forwards.*/
1605 if (rc == TMF_RESP_FUNC_COMPLETE) {
1606 u32 slot_no;
1607 struct mvs_slot_info *slot;
1608
1609 if (task->lldd_task) {
1610 slot = task->lldd_task;
1611 slot_no = (u32) (slot - mvi->slot_info);
1612 spin_lock_irqsave(&mvi->lock, flags);
1613 mvs_slot_complete(mvi, slot_no, 1);
1614 spin_unlock_irqrestore(&mvi->lock, flags);
1615 }
1616 }
1617
1618 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1619 task->task_proto & SAS_PROTOCOL_STP) {
1620 if (SATA_DEV == dev->dev_type) {
1621 struct mvs_slot_info *slot = task->lldd_task;
1622 u32 slot_idx = (u32)(slot - mvi->slot_info);
1623 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1624 "slot=%p slot_idx=x%x\n",
1625 mvi, task, slot, slot_idx);
1626 mvs_tmf_timedout((unsigned long)task);
1627 mvs_slot_task_free(mvi, task, slot, slot_idx);
1628 rc = TMF_RESP_FUNC_COMPLETE;
1629 goto out;
1630 }
1631
1632 }
1633 out:
1634 if (rc != TMF_RESP_FUNC_COMPLETE)
1635 mv_printk("%s:rc= %d\n", __func__, rc);
1636 return rc;
1637 }
1638
1639 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1640 {
1641 int rc = TMF_RESP_FUNC_FAILED;
1642 struct mvs_tmf_task tmf_task;
1643
1644 tmf_task.tmf = TMF_ABORT_TASK_SET;
1645 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1646
1647 return rc;
1648 }
1649
1650 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1651 {
1652 int rc = TMF_RESP_FUNC_FAILED;
1653 struct mvs_tmf_task tmf_task;
1654
1655 tmf_task.tmf = TMF_CLEAR_ACA;
1656 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1657
1658 return rc;
1659 }
1660
1661 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1662 {
1663 int rc = TMF_RESP_FUNC_FAILED;
1664 struct mvs_tmf_task tmf_task;
1665
1666 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1667 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1668
1669 return rc;
1670 }
1671
1672 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1673 u32 slot_idx, int err)
1674 {
1675 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1676 struct task_status_struct *tstat = &task->task_status;
1677 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1678 int stat = SAM_STAT_GOOD;
1679
1680
1681 resp->frame_len = sizeof(struct dev_to_host_fis);
1682 memcpy(&resp->ending_fis[0],
1683 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1684 sizeof(struct dev_to_host_fis));
1685 tstat->buf_valid_size = sizeof(*resp);
1686 if (unlikely(err)) {
1687 if (unlikely(err & CMD_ISS_STPD))
1688 stat = SAS_OPEN_REJECT;
1689 else
1690 stat = SAS_PROTO_RESPONSE;
1691 }
1692
1693 return stat;
1694 }
1695
1696 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1697 int key, int asc, int ascq)
1698 {
1699 memset(buffer, 0, len);
1700
1701 if (d_sense) {
1702 /* Descriptor format */
1703 if (len < 4) {
1704 mv_printk("Length %d of sense buffer too small to "
1705 "fit sense %x:%x:%x", len, key, asc, ascq);
1706 }
1707
1708 buffer[0] = 0x72; /* Response Code */
1709 if (len > 1)
1710 buffer[1] = key; /* Sense Key */
1711 if (len > 2)
1712 buffer[2] = asc; /* ASC */
1713 if (len > 3)
1714 buffer[3] = ascq; /* ASCQ */
1715 } else {
1716 if (len < 14) {
1717 mv_printk("Length %d of sense buffer too small to "
1718 "fit sense %x:%x:%x", len, key, asc, ascq);
1719 }
1720
1721 buffer[0] = 0x70; /* Response Code */
1722 if (len > 2)
1723 buffer[2] = key; /* Sense Key */
1724 if (len > 7)
1725 buffer[7] = 0x0a; /* Additional Sense Length */
1726 if (len > 12)
1727 buffer[12] = asc; /* ASC */
1728 if (len > 13)
1729 buffer[13] = ascq; /* ASCQ */
1730 }
1731
1732 return;
1733 }
1734
1735 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1736 u8 key, u8 asc, u8 asc_q)
1737 {
1738 iu->datapres = 2;
1739 iu->response_data_len = 0;
1740 iu->sense_data_len = 17;
1741 iu->status = 02;
1742 mvs_set_sense(iu->sense_data, 17, 0,
1743 key, asc, asc_q);
1744 }
1745
1746 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1747 u32 slot_idx)
1748 {
1749 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1750 int stat;
1751 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1752 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1753 u32 tfs = 0;
1754 enum mvs_port_type type = PORT_TYPE_SAS;
1755
1756 if (err_dw0 & CMD_ISS_STPD)
1757 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1758
1759 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1760
1761 stat = SAM_STAT_CHECK_CONDITION;
1762 switch (task->task_proto) {
1763 case SAS_PROTOCOL_SSP:
1764 {
1765 stat = SAS_ABORTED_TASK;
1766 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1767 struct ssp_response_iu *iu = slot->response +
1768 sizeof(struct mvs_err_info);
1769 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1770 sas_ssp_task_response(mvi->dev, task, iu);
1771 stat = SAM_STAT_CHECK_CONDITION;
1772 }
1773 if (err_dw1 & bit(31))
1774 mv_printk("reuse same slot, retry command.\n");
1775 break;
1776 }
1777 case SAS_PROTOCOL_SMP:
1778 stat = SAM_STAT_CHECK_CONDITION;
1779 break;
1780
1781 case SAS_PROTOCOL_SATA:
1782 case SAS_PROTOCOL_STP:
1783 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1784 {
1785 task->ata_task.use_ncq = 0;
1786 stat = SAS_PROTO_RESPONSE;
1787 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1788 }
1789 break;
1790 default:
1791 break;
1792 }
1793
1794 return stat;
1795 }
1796
1797 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1798 {
1799 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1800 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1801 struct sas_task *task = slot->task;
1802 struct mvs_device *mvi_dev = NULL;
1803 struct task_status_struct *tstat;
1804 struct domain_device *dev;
1805 u32 aborted;
1806
1807 void *to;
1808 enum exec_status sts;
1809
1810 if (unlikely(!task || !task->lldd_task || !task->dev))
1811 return -1;
1812
1813 tstat = &task->task_status;
1814 dev = task->dev;
1815 mvi_dev = dev->lldd_dev;
1816
1817 spin_lock(&task->task_state_lock);
1818 task->task_state_flags &=
1819 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1820 task->task_state_flags |= SAS_TASK_STATE_DONE;
1821 /* race condition*/
1822 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1823 spin_unlock(&task->task_state_lock);
1824
1825 memset(tstat, 0, sizeof(*tstat));
1826 tstat->resp = SAS_TASK_COMPLETE;
1827
1828 if (unlikely(aborted)) {
1829 tstat->stat = SAS_ABORTED_TASK;
1830 if (mvi_dev && mvi_dev->running_req)
1831 mvi_dev->running_req--;
1832 if (sas_protocol_ata(task->task_proto))
1833 mvs_free_reg_set(mvi, mvi_dev);
1834
1835 mvs_slot_task_free(mvi, task, slot, slot_idx);
1836 return -1;
1837 }
1838
1839 /* when no device attaching, go ahead and complete by error handling*/
1840 if (unlikely(!mvi_dev || flags)) {
1841 if (!mvi_dev)
1842 mv_dprintk("port has not device.\n");
1843 tstat->stat = SAS_PHY_DOWN;
1844 goto out;
1845 }
1846
1847 /* error info record present */
1848 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1849 mv_dprintk("port %d slot %d rx_desc %X has error info"
1850 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1851 rx_desc, (u64)(*(u64 *)slot->response));
1852 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1853 tstat->resp = SAS_TASK_COMPLETE;
1854 goto out;
1855 }
1856
1857 switch (task->task_proto) {
1858 case SAS_PROTOCOL_SSP:
1859 /* hw says status == 0, datapres == 0 */
1860 if (rx_desc & RXQ_GOOD) {
1861 tstat->stat = SAM_STAT_GOOD;
1862 tstat->resp = SAS_TASK_COMPLETE;
1863 }
1864 /* response frame present */
1865 else if (rx_desc & RXQ_RSP) {
1866 struct ssp_response_iu *iu = slot->response +
1867 sizeof(struct mvs_err_info);
1868 sas_ssp_task_response(mvi->dev, task, iu);
1869 } else
1870 tstat->stat = SAM_STAT_CHECK_CONDITION;
1871 break;
1872
1873 case SAS_PROTOCOL_SMP: {
1874 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1875 tstat->stat = SAM_STAT_GOOD;
1876 to = kmap_atomic(sg_page(sg_resp), KM_IRQ0);
1877 memcpy(to + sg_resp->offset,
1878 slot->response + sizeof(struct mvs_err_info),
1879 sg_dma_len(sg_resp));
1880 kunmap_atomic(to, KM_IRQ0);
1881 break;
1882 }
1883
1884 case SAS_PROTOCOL_SATA:
1885 case SAS_PROTOCOL_STP:
1886 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1887 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1888 break;
1889 }
1890
1891 default:
1892 tstat->stat = SAM_STAT_CHECK_CONDITION;
1893 break;
1894 }
1895 if (!slot->port->port_attached) {
1896 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1897 tstat->stat = SAS_PHY_DOWN;
1898 }
1899
1900
1901 out:
1902 if (mvi_dev && mvi_dev->running_req) {
1903 mvi_dev->running_req--;
1904 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1905 mvs_free_reg_set(mvi, mvi_dev);
1906 }
1907 mvs_slot_task_free(mvi, task, slot, slot_idx);
1908 sts = tstat->stat;
1909
1910 spin_unlock(&mvi->lock);
1911 if (task->task_done)
1912 task->task_done(task);
1913
1914 spin_lock(&mvi->lock);
1915
1916 return sts;
1917 }
1918
1919 void mvs_do_release_task(struct mvs_info *mvi,
1920 int phy_no, struct domain_device *dev)
1921 {
1922 u32 slot_idx;
1923 struct mvs_phy *phy;
1924 struct mvs_port *port;
1925 struct mvs_slot_info *slot, *slot2;
1926
1927 phy = &mvi->phy[phy_no];
1928 port = phy->port;
1929 if (!port)
1930 return;
1931 /* clean cmpl queue in case request is already finished */
1932 mvs_int_rx(mvi, false);
1933
1934
1935
1936 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1937 struct sas_task *task;
1938 slot_idx = (u32) (slot - mvi->slot_info);
1939 task = slot->task;
1940
1941 if (dev && task->dev != dev)
1942 continue;
1943
1944 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1945 slot_idx, slot->slot_tag, task);
1946 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1947
1948 mvs_slot_complete(mvi, slot_idx, 1);
1949 }
1950 }
1951
1952 void mvs_release_task(struct mvs_info *mvi,
1953 struct domain_device *dev)
1954 {
1955 int i, phyno[WIDE_PORT_MAX_PHY], num;
1956 num = mvs_find_dev_phyno(dev, phyno);
1957 for (i = 0; i < num; i++)
1958 mvs_do_release_task(mvi, phyno[i], dev);
1959 }
1960
1961 static void mvs_phy_disconnected(struct mvs_phy *phy)
1962 {
1963 phy->phy_attached = 0;
1964 phy->att_dev_info = 0;
1965 phy->att_dev_sas_addr = 0;
1966 }
1967
1968 static void mvs_work_queue(struct work_struct *work)
1969 {
1970 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1971 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1972 struct mvs_info *mvi = mwq->mvi;
1973 unsigned long flags;
1974 u32 phy_no = (unsigned long) mwq->data;
1975 struct sas_ha_struct *sas_ha = mvi->sas;
1976 struct mvs_phy *phy = &mvi->phy[phy_no];
1977 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1978
1979 spin_lock_irqsave(&mvi->lock, flags);
1980 if (mwq->handler & PHY_PLUG_EVENT) {
1981
1982 if (phy->phy_event & PHY_PLUG_OUT) {
1983 u32 tmp;
1984 struct sas_identify_frame *id;
1985 id = (struct sas_identify_frame *)phy->frame_rcvd;
1986 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1987 phy->phy_event &= ~PHY_PLUG_OUT;
1988 if (!(tmp & PHY_READY_MASK)) {
1989 sas_phy_disconnected(sas_phy);
1990 mvs_phy_disconnected(phy);
1991 sas_ha->notify_phy_event(sas_phy,
1992 PHYE_LOSS_OF_SIGNAL);
1993 mv_dprintk("phy%d Removed Device\n", phy_no);
1994 } else {
1995 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1996 mvs_update_phyinfo(mvi, phy_no, 1);
1997 mvs_bytes_dmaed(mvi, phy_no);
1998 mvs_port_notify_formed(sas_phy, 0);
1999 mv_dprintk("phy%d Attached Device\n", phy_no);
2000 }
2001 }
2002 } else if (mwq->handler & EXP_BRCT_CHG) {
2003 phy->phy_event &= ~EXP_BRCT_CHG;
2004 sas_ha->notify_port_event(sas_phy,
2005 PORTE_BROADCAST_RCVD);
2006 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
2007 }
2008 list_del(&mwq->entry);
2009 spin_unlock_irqrestore(&mvi->lock, flags);
2010 kfree(mwq);
2011 }
2012
2013 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2014 {
2015 struct mvs_wq *mwq;
2016 int ret = 0;
2017
2018 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2019 if (mwq) {
2020 mwq->mvi = mvi;
2021 mwq->data = data;
2022 mwq->handler = handler;
2023 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2024 list_add_tail(&mwq->entry, &mvi->wq_list);
2025 schedule_delayed_work(&mwq->work_q, HZ * 2);
2026 } else
2027 ret = -ENOMEM;
2028
2029 return ret;
2030 }
2031
2032 static void mvs_sig_time_out(unsigned long tphy)
2033 {
2034 struct mvs_phy *phy = (struct mvs_phy *)tphy;
2035 struct mvs_info *mvi = phy->mvi;
2036 u8 phy_no;
2037
2038 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2039 if (&mvi->phy[phy_no] == phy) {
2040 mv_dprintk("Get signature time out, reset phy %d\n",
2041 phy_no+mvi->id*mvi->chip->n_phy);
2042 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
2043 }
2044 }
2045 }
2046
2047 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2048 {
2049 u32 tmp;
2050 struct mvs_phy *phy = &mvi->phy[phy_no];
2051
2052 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2053 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2054 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2055 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2056 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
2057 phy->irq_status);
2058
2059 /*
2060 * events is port event now ,
2061 * we need check the interrupt status which belongs to per port.
2062 */
2063
2064 if (phy->irq_status & PHYEV_DCDR_ERR) {
2065 mv_dprintk("phy %d STP decoding error.\n",
2066 phy_no + mvi->id*mvi->chip->n_phy);
2067 }
2068
2069 if (phy->irq_status & PHYEV_POOF) {
2070 mdelay(500);
2071 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2072 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2073 int ready;
2074 mvs_do_release_task(mvi, phy_no, NULL);
2075 phy->phy_event |= PHY_PLUG_OUT;
2076 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2077 mvs_handle_event(mvi,
2078 (void *)(unsigned long)phy_no,
2079 PHY_PLUG_EVENT);
2080 ready = mvs_is_phy_ready(mvi, phy_no);
2081 if (ready || dev_sata) {
2082 if (MVS_CHIP_DISP->stp_reset)
2083 MVS_CHIP_DISP->stp_reset(mvi,
2084 phy_no);
2085 else
2086 MVS_CHIP_DISP->phy_reset(mvi,
2087 phy_no, MVS_SOFT_RESET);
2088 return;
2089 }
2090 }
2091 }
2092
2093 if (phy->irq_status & PHYEV_COMWAKE) {
2094 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2095 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2096 tmp | PHYEV_SIG_FIS);
2097 if (phy->timer.function == NULL) {
2098 phy->timer.data = (unsigned long)phy;
2099 phy->timer.function = mvs_sig_time_out;
2100 phy->timer.expires = jiffies + 5*HZ;
2101 add_timer(&phy->timer);
2102 }
2103 }
2104 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2105 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2106 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2107 if (phy->phy_status) {
2108 mdelay(10);
2109 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2110 if (phy->phy_type & PORT_TYPE_SATA) {
2111 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2112 mvi, phy_no);
2113 tmp &= ~PHYEV_SIG_FIS;
2114 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2115 phy_no, tmp);
2116 }
2117 mvs_update_phyinfo(mvi, phy_no, 0);
2118 if (phy->phy_type & PORT_TYPE_SAS) {
2119 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2120 mdelay(10);
2121 }
2122
2123 mvs_bytes_dmaed(mvi, phy_no);
2124 /* whether driver is going to handle hot plug */
2125 if (phy->phy_event & PHY_PLUG_OUT) {
2126 mvs_port_notify_formed(&phy->sas_phy, 0);
2127 phy->phy_event &= ~PHY_PLUG_OUT;
2128 }
2129 } else {
2130 mv_dprintk("plugin interrupt but phy%d is gone\n",
2131 phy_no + mvi->id*mvi->chip->n_phy);
2132 }
2133 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2134 mv_dprintk("phy %d broadcast change.\n",
2135 phy_no + mvi->id*mvi->chip->n_phy);
2136 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2137 EXP_BRCT_CHG);
2138 }
2139 }
2140
2141 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2142 {
2143 u32 rx_prod_idx, rx_desc;
2144 bool attn = false;
2145
2146 /* the first dword in the RX ring is special: it contains
2147 * a mirror of the hardware's RX producer index, so that
2148 * we don't have to stall the CPU reading that register.
2149 * The actual RX ring is offset by one dword, due to this.
2150 */
2151 rx_prod_idx = mvi->rx_cons;
2152 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2153 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2154 return 0;
2155
2156 /* The CMPL_Q may come late, read from register and try again
2157 * note: if coalescing is enabled,
2158 * it will need to read from register every time for sure
2159 */
2160 if (unlikely(mvi->rx_cons == rx_prod_idx))
2161 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2162
2163 if (mvi->rx_cons == rx_prod_idx)
2164 return 0;
2165
2166 while (mvi->rx_cons != rx_prod_idx) {
2167 /* increment our internal RX consumer pointer */
2168 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2169 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2170
2171 if (likely(rx_desc & RXQ_DONE))
2172 mvs_slot_complete(mvi, rx_desc, 0);
2173 if (rx_desc & RXQ_ATTN) {
2174 attn = true;
2175 } else if (rx_desc & RXQ_ERR) {
2176 if (!(rx_desc & RXQ_DONE))
2177 mvs_slot_complete(mvi, rx_desc, 0);
2178 } else if (rx_desc & RXQ_SLOT_RESET) {
2179 mvs_slot_free(mvi, rx_desc);
2180 }
2181 }
2182
2183 if (attn && self_clear)
2184 MVS_CHIP_DISP->int_full(mvi);
2185 return 0;
2186 }
2187
Linux kernel - Deliverables
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