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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / scsi / mvsas / mv_sas.c
blob4958fefff36559b79de06fa4a06fa67d1bc8d237
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 int mvs_slave_alloc(struct scsi_device *scsi_dev)
280 {
281 struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
282 if (dev_is_sata(dev)) {
283 /* We don't need to rescan targets
284 * if REPORT_LUNS request is failed
285 */
286 if (scsi_dev->lun > 0)
287 return -ENXIO;
288 scsi_dev->tagged_supported = 1;
289 }
290
291 return sas_slave_alloc(scsi_dev);
292 }
293
294 int mvs_slave_configure(struct scsi_device *sdev)
295 {
296 struct domain_device *dev = sdev_to_domain_dev(sdev);
297 int ret = sas_slave_configure(sdev);
298
299 if (ret)
300 return ret;
301 if (!dev_is_sata(dev)) {
302 sas_change_queue_depth(sdev,
303 MVS_QUEUE_SIZE,
304 SCSI_QDEPTH_DEFAULT);
305 }
306 return 0;
307 }
308
309 void mvs_scan_start(struct Scsi_Host *shost)
310 {
311 int i, j;
312 unsigned short core_nr;
313 struct mvs_info *mvi;
314 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
315 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
316
317 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
318
319 for (j = 0; j < core_nr; j++) {
320 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
321 for (i = 0; i < mvi->chip->n_phy; ++i)
322 mvs_bytes_dmaed(mvi, i);
323 }
324 mvs_prv->scan_finished = 1;
325 }
326
327 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
328 {
329 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
330 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
331
332 if (mvs_prv->scan_finished == 0)
333 return 0;
334
335 scsi_flush_work(shost);
336 return 1;
337 }
338
339 static int mvs_task_prep_smp(struct mvs_info *mvi,
340 struct mvs_task_exec_info *tei)
341 {
342 int elem, rc, i;
343 struct sas_task *task = tei->task;
344 struct mvs_cmd_hdr *hdr = tei->hdr;
345 struct domain_device *dev = task->dev;
346 struct asd_sas_port *sas_port = dev->port;
347 struct scatterlist *sg_req, *sg_resp;
348 u32 req_len, resp_len, tag = tei->tag;
349 void *buf_tmp;
350 u8 *buf_oaf;
351 dma_addr_t buf_tmp_dma;
352 void *buf_prd;
353 struct mvs_slot_info *slot = &mvi->slot_info[tag];
354 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
355
356 /*
357 * DMA-map SMP request, response buffers
358 */
359 sg_req = &task->smp_task.smp_req;
360 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
361 if (!elem)
362 return -ENOMEM;
363 req_len = sg_dma_len(sg_req);
364
365 sg_resp = &task->smp_task.smp_resp;
366 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
367 if (!elem) {
368 rc = -ENOMEM;
369 goto err_out;
370 }
371 resp_len = SB_RFB_MAX;
372
373 /* must be in dwords */
374 if ((req_len & 0x3) || (resp_len & 0x3)) {
375 rc = -EINVAL;
376 goto err_out_2;
377 }
378
379 /*
380 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
381 */
382
383 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
384 buf_tmp = slot->buf;
385 buf_tmp_dma = slot->buf_dma;
386
387 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
388
389 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
390 buf_oaf = buf_tmp;
391 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
392
393 buf_tmp += MVS_OAF_SZ;
394 buf_tmp_dma += MVS_OAF_SZ;
395
396 /* region 3: PRD table *********************************** */
397 buf_prd = buf_tmp;
398 if (tei->n_elem)
399 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
400 else
401 hdr->prd_tbl = 0;
402
403 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
404 buf_tmp += i;
405 buf_tmp_dma += i;
406
407 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
408 slot->response = buf_tmp;
409 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
410 if (mvi->flags & MVF_FLAG_SOC)
411 hdr->reserved[0] = 0;
412
413 /*
414 * Fill in TX ring and command slot header
415 */
416 slot->tx = mvi->tx_prod;
417 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
418 TXQ_MODE_I | tag |
419 (sas_port->phy_mask << TXQ_PHY_SHIFT));
420
421 hdr->flags |= flags;
422 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
423 hdr->tags = cpu_to_le32(tag);
424 hdr->data_len = 0;
425
426 /* generate open address frame hdr (first 12 bytes) */
427 /* initiator, SMP, ftype 1h */
428 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
429 buf_oaf[1] = dev->linkrate & 0xf;
430 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
431 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
432
433 /* fill in PRD (scatter/gather) table, if any */
434 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
435
436 return 0;
437
438 err_out_2:
439 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
440 PCI_DMA_FROMDEVICE);
441 err_out:
442 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
443 PCI_DMA_TODEVICE);
444 return rc;
445 }
446
447 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
448 {
449 struct ata_queued_cmd *qc = task->uldd_task;
450
451 if (qc) {
452 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
453 qc->tf.command == ATA_CMD_FPDMA_READ) {
454 *tag = qc->tag;
455 return 1;
456 }
457 }
458
459 return 0;
460 }
461
462 static int mvs_task_prep_ata(struct mvs_info *mvi,
463 struct mvs_task_exec_info *tei)
464 {
465 struct sas_task *task = tei->task;
466 struct domain_device *dev = task->dev;
467 struct mvs_device *mvi_dev = dev->lldd_dev;
468 struct mvs_cmd_hdr *hdr = tei->hdr;
469 struct asd_sas_port *sas_port = dev->port;
470 struct mvs_slot_info *slot;
471 void *buf_prd;
472 u32 tag = tei->tag, hdr_tag;
473 u32 flags, del_q;
474 void *buf_tmp;
475 u8 *buf_cmd, *buf_oaf;
476 dma_addr_t buf_tmp_dma;
477 u32 i, req_len, resp_len;
478 const u32 max_resp_len = SB_RFB_MAX;
479
480 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
481 mv_dprintk("Have not enough regiset for dev %d.\n",
482 mvi_dev->device_id);
483 return -EBUSY;
484 }
485 slot = &mvi->slot_info[tag];
486 slot->tx = mvi->tx_prod;
487 del_q = TXQ_MODE_I | tag |
488 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
489 (sas_port->phy_mask << TXQ_PHY_SHIFT) |
490 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
491 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
492
493 if (task->data_dir == DMA_FROM_DEVICE)
494 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
495 else
496 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
497
498 if (task->ata_task.use_ncq)
499 flags |= MCH_FPDMA;
500 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
501 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
502 flags |= MCH_ATAPI;
503 }
504
505 hdr->flags = cpu_to_le32(flags);
506
507 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
508 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
509 else
510 hdr_tag = tag;
511
512 hdr->tags = cpu_to_le32(hdr_tag);
513
514 hdr->data_len = cpu_to_le32(task->total_xfer_len);
515
516 /*
517 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
518 */
519
520 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
521 buf_cmd = buf_tmp = slot->buf;
522 buf_tmp_dma = slot->buf_dma;
523
524 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
525
526 buf_tmp += MVS_ATA_CMD_SZ;
527 buf_tmp_dma += MVS_ATA_CMD_SZ;
528
529 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
530 /* used for STP. unused for SATA? */
531 buf_oaf = buf_tmp;
532 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
533
534 buf_tmp += MVS_OAF_SZ;
535 buf_tmp_dma += MVS_OAF_SZ;
536
537 /* region 3: PRD table ********************************************* */
538 buf_prd = buf_tmp;
539
540 if (tei->n_elem)
541 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
542 else
543 hdr->prd_tbl = 0;
544 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
545
546 buf_tmp += i;
547 buf_tmp_dma += i;
548
549 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
550 slot->response = buf_tmp;
551 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
552 if (mvi->flags & MVF_FLAG_SOC)
553 hdr->reserved[0] = 0;
554
555 req_len = sizeof(struct host_to_dev_fis);
556 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
557 sizeof(struct mvs_err_info) - i;
558
559 /* request, response lengths */
560 resp_len = min(resp_len, max_resp_len);
561 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
562
563 if (likely(!task->ata_task.device_control_reg_update))
564 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
565 /* fill in command FIS and ATAPI CDB */
566 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
567 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
568 memcpy(buf_cmd + STP_ATAPI_CMD,
569 task->ata_task.atapi_packet, 16);
570
571 /* generate open address frame hdr (first 12 bytes) */
572 /* initiator, STP, ftype 1h */
573 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
574 buf_oaf[1] = dev->linkrate & 0xf;
575 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
576 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
577
578 /* fill in PRD (scatter/gather) table, if any */
579 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
580
581 if (task->data_dir == DMA_FROM_DEVICE)
582 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
583 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
584
585 return 0;
586 }
587
588 static int mvs_task_prep_ssp(struct mvs_info *mvi,
589 struct mvs_task_exec_info *tei, int is_tmf,
590 struct mvs_tmf_task *tmf)
591 {
592 struct sas_task *task = tei->task;
593 struct mvs_cmd_hdr *hdr = tei->hdr;
594 struct mvs_port *port = tei->port;
595 struct domain_device *dev = task->dev;
596 struct mvs_device *mvi_dev = dev->lldd_dev;
597 struct asd_sas_port *sas_port = dev->port;
598 struct mvs_slot_info *slot;
599 void *buf_prd;
600 struct ssp_frame_hdr *ssp_hdr;
601 void *buf_tmp;
602 u8 *buf_cmd, *buf_oaf, fburst = 0;
603 dma_addr_t buf_tmp_dma;
604 u32 flags;
605 u32 resp_len, req_len, i, tag = tei->tag;
606 const u32 max_resp_len = SB_RFB_MAX;
607 u32 phy_mask;
608
609 slot = &mvi->slot_info[tag];
610
611 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
612 sas_port->phy_mask) & TXQ_PHY_MASK;
613
614 slot->tx = mvi->tx_prod;
615 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
616 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
617 (phy_mask << TXQ_PHY_SHIFT));
618
619 flags = MCH_RETRY;
620 if (task->ssp_task.enable_first_burst) {
621 flags |= MCH_FBURST;
622 fburst = (1 << 7);
623 }
624 if (is_tmf)
625 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
626 else
627 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
628
629 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
630 hdr->tags = cpu_to_le32(tag);
631 hdr->data_len = cpu_to_le32(task->total_xfer_len);
632
633 /*
634 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
635 */
636
637 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
638 buf_cmd = buf_tmp = slot->buf;
639 buf_tmp_dma = slot->buf_dma;
640
641 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
642
643 buf_tmp += MVS_SSP_CMD_SZ;
644 buf_tmp_dma += MVS_SSP_CMD_SZ;
645
646 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
647 buf_oaf = buf_tmp;
648 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
649
650 buf_tmp += MVS_OAF_SZ;
651 buf_tmp_dma += MVS_OAF_SZ;
652
653 /* region 3: PRD table ********************************************* */
654 buf_prd = buf_tmp;
655 if (tei->n_elem)
656 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
657 else
658 hdr->prd_tbl = 0;
659
660 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
661 buf_tmp += i;
662 buf_tmp_dma += i;
663
664 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
665 slot->response = buf_tmp;
666 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
667 if (mvi->flags & MVF_FLAG_SOC)
668 hdr->reserved[0] = 0;
669
670 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
671 sizeof(struct mvs_err_info) - i;
672 resp_len = min(resp_len, max_resp_len);
673
674 req_len = sizeof(struct ssp_frame_hdr) + 28;
675
676 /* request, response lengths */
677 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
678
679 /* generate open address frame hdr (first 12 bytes) */
680 /* initiator, SSP, ftype 1h */
681 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
682 buf_oaf[1] = dev->linkrate & 0xf;
683 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
684 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
685
686 /* fill in SSP frame header (Command Table.SSP frame header) */
687 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
688
689 if (is_tmf)
690 ssp_hdr->frame_type = SSP_TASK;
691 else
692 ssp_hdr->frame_type = SSP_COMMAND;
693
694 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
695 HASHED_SAS_ADDR_SIZE);
696 memcpy(ssp_hdr->hashed_src_addr,
697 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
698 ssp_hdr->tag = cpu_to_be16(tag);
699
700 /* fill in IU for TASK and Command Frame */
701 buf_cmd += sizeof(*ssp_hdr);
702 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
703
704 if (ssp_hdr->frame_type != SSP_TASK) {
705 buf_cmd[9] = fburst | task->ssp_task.task_attr |
706 (task->ssp_task.task_prio << 3);
707 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
708 } else{
709 buf_cmd[10] = tmf->tmf;
710 switch (tmf->tmf) {
711 case TMF_ABORT_TASK:
712 case TMF_QUERY_TASK:
713 buf_cmd[12] =
714 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
715 buf_cmd[13] =
716 tmf->tag_of_task_to_be_managed & 0xff;
717 break;
718 default:
719 break;
720 }
721 }
722 /* fill in PRD (scatter/gather) table, if any */
723 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
724 return 0;
725 }
726
727 #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE)))
728 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
729 struct mvs_tmf_task *tmf, int *pass)
730 {
731 struct domain_device *dev = task->dev;
732 struct mvs_device *mvi_dev = dev->lldd_dev;
733 struct mvs_task_exec_info tei;
734 struct mvs_slot_info *slot;
735 u32 tag = 0xdeadbeef, n_elem = 0;
736 int rc = 0;
737
738 if (!dev->port) {
739 struct task_status_struct *tsm = &task->task_status;
740
741 tsm->resp = SAS_TASK_UNDELIVERED;
742 tsm->stat = SAS_PHY_DOWN;
743 /*
744 * libsas will use dev->port, should
745 * not call task_done for sata
746 */
747 if (dev->dev_type != SATA_DEV)
748 task->task_done(task);
749 return rc;
750 }
751
752 if (DEV_IS_GONE(mvi_dev)) {
753 if (mvi_dev)
754 mv_dprintk("device %d not ready.\n",
755 mvi_dev->device_id);
756 else
757 mv_dprintk("device %016llx not ready.\n",
758 SAS_ADDR(dev->sas_addr));
759
760 rc = SAS_PHY_DOWN;
761 return rc;
762 }
763 tei.port = dev->port->lldd_port;
764 if (tei.port && !tei.port->port_attached && !tmf) {
765 if (sas_protocol_ata(task->task_proto)) {
766 struct task_status_struct *ts = &task->task_status;
767 mv_dprintk("SATA/STP port %d does not attach"
768 "device.\n", dev->port->id);
769 ts->resp = SAS_TASK_COMPLETE;
770 ts->stat = SAS_PHY_DOWN;
771
772 task->task_done(task);
773
774 } else {
775 struct task_status_struct *ts = &task->task_status;
776 mv_dprintk("SAS port %d does not attach"
777 "device.\n", dev->port->id);
778 ts->resp = SAS_TASK_UNDELIVERED;
779 ts->stat = SAS_PHY_DOWN;
780 task->task_done(task);
781 }
782 return rc;
783 }
784
785 if (!sas_protocol_ata(task->task_proto)) {
786 if (task->num_scatter) {
787 n_elem = dma_map_sg(mvi->dev,
788 task->scatter,
789 task->num_scatter,
790 task->data_dir);
791 if (!n_elem) {
792 rc = -ENOMEM;
793 goto prep_out;
794 }
795 }
796 } else {
797 n_elem = task->num_scatter;
798 }
799
800 rc = mvs_tag_alloc(mvi, &tag);
801 if (rc)
802 goto err_out;
803
804 slot = &mvi->slot_info[tag];
805
806 task->lldd_task = NULL;
807 slot->n_elem = n_elem;
808 slot->slot_tag = tag;
809
810 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
811 if (!slot->buf)
812 goto err_out_tag;
813 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
814
815 tei.task = task;
816 tei.hdr = &mvi->slot[tag];
817 tei.tag = tag;
818 tei.n_elem = n_elem;
819 switch (task->task_proto) {
820 case SAS_PROTOCOL_SMP:
821 rc = mvs_task_prep_smp(mvi, &tei);
822 break;
823 case SAS_PROTOCOL_SSP:
824 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
825 break;
826 case SAS_PROTOCOL_SATA:
827 case SAS_PROTOCOL_STP:
828 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
829 rc = mvs_task_prep_ata(mvi, &tei);
830 break;
831 default:
832 dev_printk(KERN_ERR, mvi->dev,
833 "unknown sas_task proto: 0x%x\n",
834 task->task_proto);
835 rc = -EINVAL;
836 break;
837 }
838
839 if (rc) {
840 mv_dprintk("rc is %x\n", rc);
841 goto err_out_slot_buf;
842 }
843 slot->task = task;
844 slot->port = tei.port;
845 task->lldd_task = slot;
846 list_add_tail(&slot->entry, &tei.port->list);
847 spin_lock(&task->task_state_lock);
848 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
849 spin_unlock(&task->task_state_lock);
850
851 mvi_dev->running_req++;
852 ++(*pass);
853 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
854
855 return rc;
856
857 err_out_slot_buf:
858 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
859 err_out_tag:
860 mvs_tag_free(mvi, tag);
861 err_out:
862
863 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
864 if (!sas_protocol_ata(task->task_proto))
865 if (n_elem)
866 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
867 task->data_dir);
868 prep_out:
869 return rc;
870 }
871
872 static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags)
873 {
874 struct mvs_task_list *first = NULL;
875
876 for (; *num > 0; --*num) {
877 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags);
878
879 if (!mvs_list)
880 break;
881
882 INIT_LIST_HEAD(&mvs_list->list);
883 if (!first)
884 first = mvs_list;
885 else
886 list_add_tail(&mvs_list->list, &first->list);
887
888 }
889
890 return first;
891 }
892
893 static inline void mvs_task_free_list(struct mvs_task_list *mvs_list)
894 {
895 LIST_HEAD(list);
896 struct list_head *pos, *a;
897 struct mvs_task_list *mlist = NULL;
898
899 __list_add(&list, mvs_list->list.prev, &mvs_list->list);
900
901 list_for_each_safe(pos, a, &list) {
902 list_del_init(pos);
903 mlist = list_entry(pos, struct mvs_task_list, list);
904 kmem_cache_free(mvs_task_list_cache, mlist);
905 }
906 }
907
908 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
909 struct completion *completion, int is_tmf,
910 struct mvs_tmf_task *tmf)
911 {
912 struct domain_device *dev = task->dev;
913 struct mvs_info *mvi = NULL;
914 u32 rc = 0;
915 u32 pass = 0;
916 unsigned long flags = 0;
917
918 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
919
920 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL))
921 spin_unlock_irq(dev->sata_dev.ap->lock);
922
923 spin_lock_irqsave(&mvi->lock, flags);
924 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
925 if (rc)
926 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
927
928 if (likely(pass))
929 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
930 (MVS_CHIP_SLOT_SZ - 1));
931 spin_unlock_irqrestore(&mvi->lock, flags);
932
933 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL))
934 spin_lock_irq(dev->sata_dev.ap->lock);
935
936 return rc;
937 }
938
939 static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
940 struct completion *completion, int is_tmf,
941 struct mvs_tmf_task *tmf)
942 {
943 struct domain_device *dev = task->dev;
944 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha;
945 struct mvs_info *mvi = NULL;
946 struct sas_task *t = task;
947 struct mvs_task_list *mvs_list = NULL, *a;
948 LIST_HEAD(q);
949 int pass[2] = {0};
950 u32 rc = 0;
951 u32 n = num;
952 unsigned long flags = 0;
953
954 mvs_list = mvs_task_alloc_list(&n, gfp_flags);
955 if (n) {
956 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__);
957 rc = -ENOMEM;
958 goto free_list;
959 }
960
961 __list_add(&q, mvs_list->list.prev, &mvs_list->list);
962
963 list_for_each_entry(a, &q, list) {
964 a->task = t;
965 t = list_entry(t->list.next, struct sas_task, list);
966 }
967
968 list_for_each_entry(a, &q , list) {
969
970 t = a->task;
971 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info;
972
973 spin_lock_irqsave(&mvi->lock, flags);
974 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]);
975 if (rc)
976 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
977 spin_unlock_irqrestore(&mvi->lock, flags);
978 }
979
980 if (likely(pass[0]))
981 MVS_CHIP_DISP->start_delivery(mpi->mvi[0],
982 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
983
984 if (likely(pass[1]))
985 MVS_CHIP_DISP->start_delivery(mpi->mvi[1],
986 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
987
988 list_del_init(&q);
989
990 free_list:
991 if (mvs_list)
992 mvs_task_free_list(mvs_list);
993
994 return rc;
995 }
996
997 int mvs_queue_command(struct sas_task *task, const int num,
998 gfp_t gfp_flags)
999 {
1000 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1001 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas;
1002
1003 if (sas->lldd_max_execute_num < 2)
1004 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL);
1005 else
1006 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL);
1007 }
1008
1009 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
1010 {
1011 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1012 mvs_tag_clear(mvi, slot_idx);
1013 }
1014
1015 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
1016 struct mvs_slot_info *slot, u32 slot_idx)
1017 {
1018 if (!slot->task)
1019 return;
1020 if (!sas_protocol_ata(task->task_proto))
1021 if (slot->n_elem)
1022 dma_unmap_sg(mvi->dev, task->scatter,
1023 slot->n_elem, task->data_dir);
1024
1025 switch (task->task_proto) {
1026 case SAS_PROTOCOL_SMP:
1027 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
1028 PCI_DMA_FROMDEVICE);
1029 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
1030 PCI_DMA_TODEVICE);
1031 break;
1032
1033 case SAS_PROTOCOL_SATA:
1034 case SAS_PROTOCOL_STP:
1035 case SAS_PROTOCOL_SSP:
1036 default:
1037 /* do nothing */
1038 break;
1039 }
1040
1041 if (slot->buf) {
1042 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
1043 slot->buf = NULL;
1044 }
1045 list_del_init(&slot->entry);
1046 task->lldd_task = NULL;
1047 slot->task = NULL;
1048 slot->port = NULL;
1049 slot->slot_tag = 0xFFFFFFFF;
1050 mvs_slot_free(mvi, slot_idx);
1051 }
1052
1053 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
1054 {
1055 struct mvs_phy *phy = &mvi->phy[phy_no];
1056 struct mvs_port *port = phy->port;
1057 int j, no;
1058
1059 for_each_phy(port->wide_port_phymap, j, no) {
1060 if (j & 1) {
1061 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1062 PHYR_WIDE_PORT);
1063 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1064 port->wide_port_phymap);
1065 } else {
1066 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1067 PHYR_WIDE_PORT);
1068 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1069 0);
1070 }
1071 }
1072 }
1073
1074 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
1075 {
1076 u32 tmp;
1077 struct mvs_phy *phy = &mvi->phy[i];
1078 struct mvs_port *port = phy->port;
1079
1080 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
1081 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
1082 if (!port)
1083 phy->phy_attached = 1;
1084 return tmp;
1085 }
1086
1087 if (port) {
1088 if (phy->phy_type & PORT_TYPE_SAS) {
1089 port->wide_port_phymap &= ~(1U << i);
1090 if (!port->wide_port_phymap)
1091 port->port_attached = 0;
1092 mvs_update_wideport(mvi, i);
1093 } else if (phy->phy_type & PORT_TYPE_SATA)
1094 port->port_attached = 0;
1095 phy->port = NULL;
1096 phy->phy_attached = 0;
1097 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1098 }
1099 return 0;
1100 }
1101
1102 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
1103 {
1104 u32 *s = (u32 *) buf;
1105
1106 if (!s)
1107 return NULL;
1108
1109 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
1110 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1111
1112 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
1113 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1114
1115 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
1116 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1117
1118 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
1119 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1120
1121 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
1122 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1123
1124 return s;
1125 }
1126
1127 static u32 mvs_is_sig_fis_received(u32 irq_status)
1128 {
1129 return irq_status & PHYEV_SIG_FIS;
1130 }
1131
1132 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1133 {
1134 if (phy->timer.function)
1135 del_timer(&phy->timer);
1136 phy->timer.function = NULL;
1137 }
1138
1139 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1140 {
1141 struct mvs_phy *phy = &mvi->phy[i];
1142 struct sas_identify_frame *id;
1143
1144 id = (struct sas_identify_frame *)phy->frame_rcvd;
1145
1146 if (get_st) {
1147 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1148 phy->phy_status = mvs_is_phy_ready(mvi, i);
1149 }
1150
1151 if (phy->phy_status) {
1152 int oob_done = 0;
1153 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1154
1155 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1156
1157 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1158 if (phy->phy_type & PORT_TYPE_SATA) {
1159 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1160 if (mvs_is_sig_fis_received(phy->irq_status)) {
1161 mvs_sig_remove_timer(phy);
1162 phy->phy_attached = 1;
1163 phy->att_dev_sas_addr =
1164 i + mvi->id * mvi->chip->n_phy;
1165 if (oob_done)
1166 sas_phy->oob_mode = SATA_OOB_MODE;
1167 phy->frame_rcvd_size =
1168 sizeof(struct dev_to_host_fis);
1169 mvs_get_d2h_reg(mvi, i, id);
1170 } else {
1171 u32 tmp;
1172 dev_printk(KERN_DEBUG, mvi->dev,
1173 "Phy%d : No sig fis\n", i);
1174 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1175 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1176 tmp | PHYEV_SIG_FIS);
1177 phy->phy_attached = 0;
1178 phy->phy_type &= ~PORT_TYPE_SATA;
1179 goto out_done;
1180 }
1181 } else if (phy->phy_type & PORT_TYPE_SAS
1182 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1183 phy->phy_attached = 1;
1184 phy->identify.device_type =
1185 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1186
1187 if (phy->identify.device_type == SAS_END_DEV)
1188 phy->identify.target_port_protocols =
1189 SAS_PROTOCOL_SSP;
1190 else if (phy->identify.device_type != NO_DEVICE)
1191 phy->identify.target_port_protocols =
1192 SAS_PROTOCOL_SMP;
1193 if (oob_done)
1194 sas_phy->oob_mode = SAS_OOB_MODE;
1195 phy->frame_rcvd_size =
1196 sizeof(struct sas_identify_frame);
1197 }
1198 memcpy(sas_phy->attached_sas_addr,
1199 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1200
1201 if (MVS_CHIP_DISP->phy_work_around)
1202 MVS_CHIP_DISP->phy_work_around(mvi, i);
1203 }
1204 mv_dprintk("phy %d attach dev info is %x\n",
1205 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1206 mv_dprintk("phy %d attach sas addr is %llx\n",
1207 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1208 out_done:
1209 if (get_st)
1210 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1211 }
1212
1213 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1214 {
1215 struct sas_ha_struct *sas_ha = sas_phy->ha;
1216 struct mvs_info *mvi = NULL; int i = 0, hi;
1217 struct mvs_phy *phy = sas_phy->lldd_phy;
1218 struct asd_sas_port *sas_port = sas_phy->port;
1219 struct mvs_port *port;
1220 unsigned long flags = 0;
1221 if (!sas_port)
1222 return;
1223
1224 while (sas_ha->sas_phy[i]) {
1225 if (sas_ha->sas_phy[i] == sas_phy)
1226 break;
1227 i++;
1228 }
1229 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1230 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1231 if (i >= mvi->chip->n_phy)
1232 port = &mvi->port[i - mvi->chip->n_phy];
1233 else
1234 port = &mvi->port[i];
1235 if (lock)
1236 spin_lock_irqsave(&mvi->lock, flags);
1237 port->port_attached = 1;
1238 phy->port = port;
1239 sas_port->lldd_port = port;
1240 if (phy->phy_type & PORT_TYPE_SAS) {
1241 port->wide_port_phymap = sas_port->phy_mask;
1242 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1243 mvs_update_wideport(mvi, sas_phy->id);
1244 }
1245 if (lock)
1246 spin_unlock_irqrestore(&mvi->lock, flags);
1247 }
1248
1249 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1250 {
1251 struct domain_device *dev;
1252 struct mvs_phy *phy = sas_phy->lldd_phy;
1253 struct mvs_info *mvi = phy->mvi;
1254 struct asd_sas_port *port = sas_phy->port;
1255 int phy_no = 0;
1256
1257 while (phy != &mvi->phy[phy_no]) {
1258 phy_no++;
1259 if (phy_no >= MVS_MAX_PHYS)
1260 return;
1261 }
1262 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1263 mvs_do_release_task(phy->mvi, phy_no, dev);
1264
1265 }
1266
1267
1268 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1269 {
1270 mvs_port_notify_formed(sas_phy, 1);
1271 }
1272
1273 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1274 {
1275 mvs_port_notify_deformed(sas_phy, 1);
1276 }
1277
1278 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1279 {
1280 u32 dev;
1281 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1282 if (mvi->devices[dev].dev_type == NO_DEVICE) {
1283 mvi->devices[dev].device_id = dev;
1284 return &mvi->devices[dev];
1285 }
1286 }
1287
1288 if (dev == MVS_MAX_DEVICES)
1289 mv_printk("max support %d devices, ignore ..\n",
1290 MVS_MAX_DEVICES);
1291
1292 return NULL;
1293 }
1294
1295 void mvs_free_dev(struct mvs_device *mvi_dev)
1296 {
1297 u32 id = mvi_dev->device_id;
1298 memset(mvi_dev, 0, sizeof(*mvi_dev));
1299 mvi_dev->device_id = id;
1300 mvi_dev->dev_type = NO_DEVICE;
1301 mvi_dev->dev_status = MVS_DEV_NORMAL;
1302 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1303 }
1304
1305 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1306 {
1307 unsigned long flags = 0;
1308 int res = 0;
1309 struct mvs_info *mvi = NULL;
1310 struct domain_device *parent_dev = dev->parent;
1311 struct mvs_device *mvi_device;
1312
1313 mvi = mvs_find_dev_mvi(dev);
1314
1315 if (lock)
1316 spin_lock_irqsave(&mvi->lock, flags);
1317
1318 mvi_device = mvs_alloc_dev(mvi);
1319 if (!mvi_device) {
1320 res = -1;
1321 goto found_out;
1322 }
1323 dev->lldd_dev = mvi_device;
1324 mvi_device->dev_status = MVS_DEV_NORMAL;
1325 mvi_device->dev_type = dev->dev_type;
1326 mvi_device->mvi_info = mvi;
1327 mvi_device->sas_device = dev;
1328 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1329 int phy_id;
1330 u8 phy_num = parent_dev->ex_dev.num_phys;
1331 struct ex_phy *phy;
1332 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1333 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1334 if (SAS_ADDR(phy->attached_sas_addr) ==
1335 SAS_ADDR(dev->sas_addr)) {
1336 mvi_device->attached_phy = phy_id;
1337 break;
1338 }
1339 }
1340
1341 if (phy_id == phy_num) {
1342 mv_printk("Error: no attached dev:%016llx"
1343 "at ex:%016llx.\n",
1344 SAS_ADDR(dev->sas_addr),
1345 SAS_ADDR(parent_dev->sas_addr));
1346 res = -1;
1347 }
1348 }
1349
1350 found_out:
1351 if (lock)
1352 spin_unlock_irqrestore(&mvi->lock, flags);
1353 return res;
1354 }
1355
1356 int mvs_dev_found(struct domain_device *dev)
1357 {
1358 return mvs_dev_found_notify(dev, 1);
1359 }
1360
1361 void mvs_dev_gone_notify(struct domain_device *dev)
1362 {
1363 unsigned long flags = 0;
1364 struct mvs_device *mvi_dev = dev->lldd_dev;
1365 struct mvs_info *mvi = mvi_dev->mvi_info;
1366
1367 spin_lock_irqsave(&mvi->lock, flags);
1368
1369 if (mvi_dev) {
1370 mv_dprintk("found dev[%d:%x] is gone.\n",
1371 mvi_dev->device_id, mvi_dev->dev_type);
1372 mvs_release_task(mvi, dev);
1373 mvs_free_reg_set(mvi, mvi_dev);
1374 mvs_free_dev(mvi_dev);
1375 } else {
1376 mv_dprintk("found dev has gone.\n");
1377 }
1378 dev->lldd_dev = NULL;
1379 mvi_dev->sas_device = NULL;
1380
1381 spin_unlock_irqrestore(&mvi->lock, flags);
1382 }
1383
1384
1385 void mvs_dev_gone(struct domain_device *dev)
1386 {
1387 mvs_dev_gone_notify(dev);
1388 }
1389
1390 static struct sas_task *mvs_alloc_task(void)
1391 {
1392 struct sas_task *task = kzalloc(sizeof(struct sas_task), GFP_KERNEL);
1393
1394 if (task) {
1395 INIT_LIST_HEAD(&task->list);
1396 spin_lock_init(&task->task_state_lock);
1397 task->task_state_flags = SAS_TASK_STATE_PENDING;
1398 init_timer(&task->timer);
1399 init_completion(&task->completion);
1400 }
1401 return task;
1402 }
1403
1404 static void mvs_free_task(struct sas_task *task)
1405 {
1406 if (task) {
1407 BUG_ON(!list_empty(&task->list));
1408 kfree(task);
1409 }
1410 }
1411
1412 static void mvs_task_done(struct sas_task *task)
1413 {
1414 if (!del_timer(&task->timer))
1415 return;
1416 complete(&task->completion);
1417 }
1418
1419 static void mvs_tmf_timedout(unsigned long data)
1420 {
1421 struct sas_task *task = (struct sas_task *)data;
1422
1423 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1424 complete(&task->completion);
1425 }
1426
1427 #define MVS_TASK_TIMEOUT 20
1428 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1429 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1430 {
1431 int res, retry;
1432 struct sas_task *task = NULL;
1433
1434 for (retry = 0; retry < 3; retry++) {
1435 task = mvs_alloc_task();
1436 if (!task)
1437 return -ENOMEM;
1438
1439 task->dev = dev;
1440 task->task_proto = dev->tproto;
1441
1442 memcpy(&task->ssp_task, parameter, para_len);
1443 task->task_done = mvs_task_done;
1444
1445 task->timer.data = (unsigned long) task;
1446 task->timer.function = mvs_tmf_timedout;
1447 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1448 add_timer(&task->timer);
1449
1450 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1451
1452 if (res) {
1453 del_timer(&task->timer);
1454 mv_printk("executing internel task failed:%d\n", res);
1455 goto ex_err;
1456 }
1457
1458 wait_for_completion(&task->completion);
1459 res = TMF_RESP_FUNC_FAILED;
1460 /* Even TMF timed out, return direct. */
1461 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1462 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1463 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1464 goto ex_err;
1465 }
1466 }
1467
1468 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1469 task->task_status.stat == SAM_STAT_GOOD) {
1470 res = TMF_RESP_FUNC_COMPLETE;
1471 break;
1472 }
1473
1474 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1475 task->task_status.stat == SAS_DATA_UNDERRUN) {
1476 /* no error, but return the number of bytes of
1477 * underrun */
1478 res = task->task_status.residual;
1479 break;
1480 }
1481
1482 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1483 task->task_status.stat == SAS_DATA_OVERRUN) {
1484 mv_dprintk("blocked task error.\n");
1485 res = -EMSGSIZE;
1486 break;
1487 } else {
1488 mv_dprintk(" task to dev %016llx response: 0x%x "
1489 "status 0x%x\n",
1490 SAS_ADDR(dev->sas_addr),
1491 task->task_status.resp,
1492 task->task_status.stat);
1493 mvs_free_task(task);
1494 task = NULL;
1495
1496 }
1497 }
1498 ex_err:
1499 BUG_ON(retry == 3 && task != NULL);
1500 if (task != NULL)
1501 mvs_free_task(task);
1502 return res;
1503 }
1504
1505 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1506 u8 *lun, struct mvs_tmf_task *tmf)
1507 {
1508 struct sas_ssp_task ssp_task;
1509 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1510 return TMF_RESP_FUNC_ESUPP;
1511
1512 memcpy(ssp_task.LUN, lun, 8);
1513
1514 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1515 sizeof(ssp_task), tmf);
1516 }
1517
1518
1519 /* Standard mandates link reset for ATA (type 0)
1520 and hard reset for SSP (type 1) , only for RECOVERY */
1521 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1522 {
1523 int rc;
1524 struct sas_phy *phy = sas_find_local_phy(dev);
1525 int reset_type = (dev->dev_type == SATA_DEV ||
1526 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1527 rc = sas_phy_reset(phy, reset_type);
1528 msleep(2000);
1529 return rc;
1530 }
1531
1532 /* mandatory SAM-3 */
1533 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1534 {
1535 unsigned long flags;
1536 int rc = TMF_RESP_FUNC_FAILED;
1537 struct mvs_tmf_task tmf_task;
1538 struct mvs_device * mvi_dev = dev->lldd_dev;
1539 struct mvs_info *mvi = mvi_dev->mvi_info;
1540
1541 tmf_task.tmf = TMF_LU_RESET;
1542 mvi_dev->dev_status = MVS_DEV_EH;
1543 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1544 if (rc == TMF_RESP_FUNC_COMPLETE) {
1545 spin_lock_irqsave(&mvi->lock, flags);
1546 mvs_release_task(mvi, dev);
1547 spin_unlock_irqrestore(&mvi->lock, flags);
1548 }
1549 /* If failed, fall-through I_T_Nexus reset */
1550 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1551 mvi_dev->device_id, rc);
1552 return rc;
1553 }
1554
1555 int mvs_I_T_nexus_reset(struct domain_device *dev)
1556 {
1557 unsigned long flags;
1558 int rc = TMF_RESP_FUNC_FAILED;
1559 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1560 struct mvs_info *mvi = mvi_dev->mvi_info;
1561
1562 if (mvi_dev->dev_status != MVS_DEV_EH)
1563 return TMF_RESP_FUNC_COMPLETE;
1564 else
1565 mvi_dev->dev_status = MVS_DEV_NORMAL;
1566 rc = mvs_debug_I_T_nexus_reset(dev);
1567 mv_printk("%s for device[%x]:rc= %d\n",
1568 __func__, mvi_dev->device_id, rc);
1569
1570 spin_lock_irqsave(&mvi->lock, flags);
1571 mvs_release_task(mvi, dev);
1572 spin_unlock_irqrestore(&mvi->lock, flags);
1573
1574 return rc;
1575 }
1576 /* optional SAM-3 */
1577 int mvs_query_task(struct sas_task *task)
1578 {
1579 u32 tag;
1580 struct scsi_lun lun;
1581 struct mvs_tmf_task tmf_task;
1582 int rc = TMF_RESP_FUNC_FAILED;
1583
1584 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1585 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1586 struct domain_device *dev = task->dev;
1587 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1588 struct mvs_info *mvi = mvi_dev->mvi_info;
1589
1590 int_to_scsilun(cmnd->device->lun, &lun);
1591 rc = mvs_find_tag(mvi, task, &tag);
1592 if (rc == 0) {
1593 rc = TMF_RESP_FUNC_FAILED;
1594 return rc;
1595 }
1596
1597 tmf_task.tmf = TMF_QUERY_TASK;
1598 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1599
1600 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1601 switch (rc) {
1602 /* The task is still in Lun, release it then */
1603 case TMF_RESP_FUNC_SUCC:
1604 /* The task is not in Lun or failed, reset the phy */
1605 case TMF_RESP_FUNC_FAILED:
1606 case TMF_RESP_FUNC_COMPLETE:
1607 break;
1608 }
1609 }
1610 mv_printk("%s:rc= %d\n", __func__, rc);
1611 return rc;
1612 }
1613
1614 /* mandatory SAM-3, still need free task/slot info */
1615 int mvs_abort_task(struct sas_task *task)
1616 {
1617 struct scsi_lun lun;
1618 struct mvs_tmf_task tmf_task;
1619 struct domain_device *dev = task->dev;
1620 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1621 struct mvs_info *mvi;
1622 int rc = TMF_RESP_FUNC_FAILED;
1623 unsigned long flags;
1624 u32 tag;
1625
1626 if (!mvi_dev) {
1627 mv_printk("Device has removed\n");
1628 return TMF_RESP_FUNC_FAILED;
1629 }
1630
1631 mvi = mvi_dev->mvi_info;
1632
1633 spin_lock_irqsave(&task->task_state_lock, flags);
1634 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1635 spin_unlock_irqrestore(&task->task_state_lock, flags);
1636 rc = TMF_RESP_FUNC_COMPLETE;
1637 goto out;
1638 }
1639 spin_unlock_irqrestore(&task->task_state_lock, flags);
1640 mvi_dev->dev_status = MVS_DEV_EH;
1641 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1642 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1643
1644 int_to_scsilun(cmnd->device->lun, &lun);
1645 rc = mvs_find_tag(mvi, task, &tag);
1646 if (rc == 0) {
1647 mv_printk("No such tag in %s\n", __func__);
1648 rc = TMF_RESP_FUNC_FAILED;
1649 return rc;
1650 }
1651
1652 tmf_task.tmf = TMF_ABORT_TASK;
1653 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1654
1655 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1656
1657 /* if successful, clear the task and callback forwards.*/
1658 if (rc == TMF_RESP_FUNC_COMPLETE) {
1659 u32 slot_no;
1660 struct mvs_slot_info *slot;
1661
1662 if (task->lldd_task) {
1663 slot = task->lldd_task;
1664 slot_no = (u32) (slot - mvi->slot_info);
1665 spin_lock_irqsave(&mvi->lock, flags);
1666 mvs_slot_complete(mvi, slot_no, 1);
1667 spin_unlock_irqrestore(&mvi->lock, flags);
1668 }
1669 }
1670
1671 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1672 task->task_proto & SAS_PROTOCOL_STP) {
1673 if (SATA_DEV == dev->dev_type) {
1674 struct mvs_slot_info *slot = task->lldd_task;
1675 u32 slot_idx = (u32)(slot - mvi->slot_info);
1676 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1677 "slot=%p slot_idx=x%x\n",
1678 mvi, task, slot, slot_idx);
1679 mvs_tmf_timedout((unsigned long)task);
1680 mvs_slot_task_free(mvi, task, slot, slot_idx);
1681 rc = TMF_RESP_FUNC_COMPLETE;
1682 goto out;
1683 }
1684
1685 }
1686 out:
1687 if (rc != TMF_RESP_FUNC_COMPLETE)
1688 mv_printk("%s:rc= %d\n", __func__, rc);
1689 return rc;
1690 }
1691
1692 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1693 {
1694 int rc = TMF_RESP_FUNC_FAILED;
1695 struct mvs_tmf_task tmf_task;
1696
1697 tmf_task.tmf = TMF_ABORT_TASK_SET;
1698 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1699
1700 return rc;
1701 }
1702
1703 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1704 {
1705 int rc = TMF_RESP_FUNC_FAILED;
1706 struct mvs_tmf_task tmf_task;
1707
1708 tmf_task.tmf = TMF_CLEAR_ACA;
1709 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1710
1711 return rc;
1712 }
1713
1714 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1715 {
1716 int rc = TMF_RESP_FUNC_FAILED;
1717 struct mvs_tmf_task tmf_task;
1718
1719 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1720 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1721
1722 return rc;
1723 }
1724
1725 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1726 u32 slot_idx, int err)
1727 {
1728 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1729 struct task_status_struct *tstat = &task->task_status;
1730 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1731 int stat = SAM_STAT_GOOD;
1732
1733
1734 resp->frame_len = sizeof(struct dev_to_host_fis);
1735 memcpy(&resp->ending_fis[0],
1736 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1737 sizeof(struct dev_to_host_fis));
1738 tstat->buf_valid_size = sizeof(*resp);
1739 if (unlikely(err)) {
1740 if (unlikely(err & CMD_ISS_STPD))
1741 stat = SAS_OPEN_REJECT;
1742 else
1743 stat = SAS_PROTO_RESPONSE;
1744 }
1745
1746 return stat;
1747 }
1748
1749 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1750 int key, int asc, int ascq)
1751 {
1752 memset(buffer, 0, len);
1753
1754 if (d_sense) {
1755 /* Descriptor format */
1756 if (len < 4) {
1757 mv_printk("Length %d of sense buffer too small to "
1758 "fit sense %x:%x:%x", len, key, asc, ascq);
1759 }
1760
1761 buffer[0] = 0x72; /* Response Code */
1762 if (len > 1)
1763 buffer[1] = key; /* Sense Key */
1764 if (len > 2)
1765 buffer[2] = asc; /* ASC */
1766 if (len > 3)
1767 buffer[3] = ascq; /* ASCQ */
1768 } else {
1769 if (len < 14) {
1770 mv_printk("Length %d of sense buffer too small to "
1771 "fit sense %x:%x:%x", len, key, asc, ascq);
1772 }
1773
1774 buffer[0] = 0x70; /* Response Code */
1775 if (len > 2)
1776 buffer[2] = key; /* Sense Key */
1777 if (len > 7)
1778 buffer[7] = 0x0a; /* Additional Sense Length */
1779 if (len > 12)
1780 buffer[12] = asc; /* ASC */
1781 if (len > 13)
1782 buffer[13] = ascq; /* ASCQ */
1783 }
1784
1785 return;
1786 }
1787
1788 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1789 u8 key, u8 asc, u8 asc_q)
1790 {
1791 iu->datapres = 2;
1792 iu->response_data_len = 0;
1793 iu->sense_data_len = 17;
1794 iu->status = 02;
1795 mvs_set_sense(iu->sense_data, 17, 0,
1796 key, asc, asc_q);
1797 }
1798
1799 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1800 u32 slot_idx)
1801 {
1802 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1803 int stat;
1804 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1805 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1806 u32 tfs = 0;
1807 enum mvs_port_type type = PORT_TYPE_SAS;
1808
1809 if (err_dw0 & CMD_ISS_STPD)
1810 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1811
1812 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1813
1814 stat = SAM_STAT_CHECK_CONDITION;
1815 switch (task->task_proto) {
1816 case SAS_PROTOCOL_SSP:
1817 {
1818 stat = SAS_ABORTED_TASK;
1819 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1820 struct ssp_response_iu *iu = slot->response +
1821 sizeof(struct mvs_err_info);
1822 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1823 sas_ssp_task_response(mvi->dev, task, iu);
1824 stat = SAM_STAT_CHECK_CONDITION;
1825 }
1826 if (err_dw1 & bit(31))
1827 mv_printk("reuse same slot, retry command.\n");
1828 break;
1829 }
1830 case SAS_PROTOCOL_SMP:
1831 stat = SAM_STAT_CHECK_CONDITION;
1832 break;
1833
1834 case SAS_PROTOCOL_SATA:
1835 case SAS_PROTOCOL_STP:
1836 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1837 {
1838 task->ata_task.use_ncq = 0;
1839 stat = SAS_PROTO_RESPONSE;
1840 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1841 }
1842 break;
1843 default:
1844 break;
1845 }
1846
1847 return stat;
1848 }
1849
1850 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1851 {
1852 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1853 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1854 struct sas_task *task = slot->task;
1855 struct mvs_device *mvi_dev = NULL;
1856 struct task_status_struct *tstat;
1857 struct domain_device *dev;
1858 u32 aborted;
1859
1860 void *to;
1861 enum exec_status sts;
1862
1863 if (unlikely(!task || !task->lldd_task || !task->dev))
1864 return -1;
1865
1866 tstat = &task->task_status;
1867 dev = task->dev;
1868 mvi_dev = dev->lldd_dev;
1869
1870 spin_lock(&task->task_state_lock);
1871 task->task_state_flags &=
1872 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1873 task->task_state_flags |= SAS_TASK_STATE_DONE;
1874 /* race condition*/
1875 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1876 spin_unlock(&task->task_state_lock);
1877
1878 memset(tstat, 0, sizeof(*tstat));
1879 tstat->resp = SAS_TASK_COMPLETE;
1880
1881 if (unlikely(aborted)) {
1882 tstat->stat = SAS_ABORTED_TASK;
1883 if (mvi_dev && mvi_dev->running_req)
1884 mvi_dev->running_req--;
1885 if (sas_protocol_ata(task->task_proto))
1886 mvs_free_reg_set(mvi, mvi_dev);
1887
1888 mvs_slot_task_free(mvi, task, slot, slot_idx);
1889 return -1;
1890 }
1891
1892 /* when no device attaching, go ahead and complete by error handling*/
1893 if (unlikely(!mvi_dev || flags)) {
1894 if (!mvi_dev)
1895 mv_dprintk("port has not device.\n");
1896 tstat->stat = SAS_PHY_DOWN;
1897 goto out;
1898 }
1899
1900 /* error info record present */
1901 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1902 mv_dprintk("port %d slot %d rx_desc %X has error info"
1903 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1904 rx_desc, (u64)(*(u64 *)slot->response));
1905 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1906 tstat->resp = SAS_TASK_COMPLETE;
1907 goto out;
1908 }
1909
1910 switch (task->task_proto) {
1911 case SAS_PROTOCOL_SSP:
1912 /* hw says status == 0, datapres == 0 */
1913 if (rx_desc & RXQ_GOOD) {
1914 tstat->stat = SAM_STAT_GOOD;
1915 tstat->resp = SAS_TASK_COMPLETE;
1916 }
1917 /* response frame present */
1918 else if (rx_desc & RXQ_RSP) {
1919 struct ssp_response_iu *iu = slot->response +
1920 sizeof(struct mvs_err_info);
1921 sas_ssp_task_response(mvi->dev, task, iu);
1922 } else
1923 tstat->stat = SAM_STAT_CHECK_CONDITION;
1924 break;
1925
1926 case SAS_PROTOCOL_SMP: {
1927 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1928 tstat->stat = SAM_STAT_GOOD;
1929 to = kmap_atomic(sg_page(sg_resp), KM_IRQ0);
1930 memcpy(to + sg_resp->offset,
1931 slot->response + sizeof(struct mvs_err_info),
1932 sg_dma_len(sg_resp));
1933 kunmap_atomic(to, KM_IRQ0);
1934 break;
1935 }
1936
1937 case SAS_PROTOCOL_SATA:
1938 case SAS_PROTOCOL_STP:
1939 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1940 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1941 break;
1942 }
1943
1944 default:
1945 tstat->stat = SAM_STAT_CHECK_CONDITION;
1946 break;
1947 }
1948 if (!slot->port->port_attached) {
1949 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1950 tstat->stat = SAS_PHY_DOWN;
1951 }
1952
1953
1954 out:
1955 if (mvi_dev && mvi_dev->running_req) {
1956 mvi_dev->running_req--;
1957 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1958 mvs_free_reg_set(mvi, mvi_dev);
1959 }
1960 mvs_slot_task_free(mvi, task, slot, slot_idx);
1961 sts = tstat->stat;
1962
1963 spin_unlock(&mvi->lock);
1964 if (task->task_done)
1965 task->task_done(task);
1966
1967 spin_lock(&mvi->lock);
1968
1969 return sts;
1970 }
1971
1972 void mvs_do_release_task(struct mvs_info *mvi,
1973 int phy_no, struct domain_device *dev)
1974 {
1975 u32 slot_idx;
1976 struct mvs_phy *phy;
1977 struct mvs_port *port;
1978 struct mvs_slot_info *slot, *slot2;
1979
1980 phy = &mvi->phy[phy_no];
1981 port = phy->port;
1982 if (!port)
1983 return;
1984 /* clean cmpl queue in case request is already finished */
1985 mvs_int_rx(mvi, false);
1986
1987
1988
1989 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1990 struct sas_task *task;
1991 slot_idx = (u32) (slot - mvi->slot_info);
1992 task = slot->task;
1993
1994 if (dev && task->dev != dev)
1995 continue;
1996
1997 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1998 slot_idx, slot->slot_tag, task);
1999 MVS_CHIP_DISP->command_active(mvi, slot_idx);
2000
2001 mvs_slot_complete(mvi, slot_idx, 1);
2002 }
2003 }
2004
2005 void mvs_release_task(struct mvs_info *mvi,
2006 struct domain_device *dev)
2007 {
2008 int i, phyno[WIDE_PORT_MAX_PHY], num;
2009 num = mvs_find_dev_phyno(dev, phyno);
2010 for (i = 0; i < num; i++)
2011 mvs_do_release_task(mvi, phyno[i], dev);
2012 }
2013
2014 static void mvs_phy_disconnected(struct mvs_phy *phy)
2015 {
2016 phy->phy_attached = 0;
2017 phy->att_dev_info = 0;
2018 phy->att_dev_sas_addr = 0;
2019 }
2020
2021 static void mvs_work_queue(struct work_struct *work)
2022 {
2023 struct delayed_work *dw = container_of(work, struct delayed_work, work);
2024 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
2025 struct mvs_info *mvi = mwq->mvi;
2026 unsigned long flags;
2027 u32 phy_no = (unsigned long) mwq->data;
2028 struct sas_ha_struct *sas_ha = mvi->sas;
2029 struct mvs_phy *phy = &mvi->phy[phy_no];
2030 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2031
2032 spin_lock_irqsave(&mvi->lock, flags);
2033 if (mwq->handler & PHY_PLUG_EVENT) {
2034
2035 if (phy->phy_event & PHY_PLUG_OUT) {
2036 u32 tmp;
2037 struct sas_identify_frame *id;
2038 id = (struct sas_identify_frame *)phy->frame_rcvd;
2039 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
2040 phy->phy_event &= ~PHY_PLUG_OUT;
2041 if (!(tmp & PHY_READY_MASK)) {
2042 sas_phy_disconnected(sas_phy);
2043 mvs_phy_disconnected(phy);
2044 sas_ha->notify_phy_event(sas_phy,
2045 PHYE_LOSS_OF_SIGNAL);
2046 mv_dprintk("phy%d Removed Device\n", phy_no);
2047 } else {
2048 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2049 mvs_update_phyinfo(mvi, phy_no, 1);
2050 mvs_bytes_dmaed(mvi, phy_no);
2051 mvs_port_notify_formed(sas_phy, 0);
2052 mv_dprintk("phy%d Attached Device\n", phy_no);
2053 }
2054 }
2055 } else if (mwq->handler & EXP_BRCT_CHG) {
2056 phy->phy_event &= ~EXP_BRCT_CHG;
2057 sas_ha->notify_port_event(sas_phy,
2058 PORTE_BROADCAST_RCVD);
2059 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
2060 }
2061 list_del(&mwq->entry);
2062 spin_unlock_irqrestore(&mvi->lock, flags);
2063 kfree(mwq);
2064 }
2065
2066 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2067 {
2068 struct mvs_wq *mwq;
2069 int ret = 0;
2070
2071 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2072 if (mwq) {
2073 mwq->mvi = mvi;
2074 mwq->data = data;
2075 mwq->handler = handler;
2076 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2077 list_add_tail(&mwq->entry, &mvi->wq_list);
2078 schedule_delayed_work(&mwq->work_q, HZ * 2);
2079 } else
2080 ret = -ENOMEM;
2081
2082 return ret;
2083 }
2084
2085 static void mvs_sig_time_out(unsigned long tphy)
2086 {
2087 struct mvs_phy *phy = (struct mvs_phy *)tphy;
2088 struct mvs_info *mvi = phy->mvi;
2089 u8 phy_no;
2090
2091 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2092 if (&mvi->phy[phy_no] == phy) {
2093 mv_dprintk("Get signature time out, reset phy %d\n",
2094 phy_no+mvi->id*mvi->chip->n_phy);
2095 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
2096 }
2097 }
2098 }
2099
2100 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2101 {
2102 u32 tmp;
2103 struct mvs_phy *phy = &mvi->phy[phy_no];
2104
2105 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2106 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2107 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2108 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2109 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
2110 phy->irq_status);
2111
2112 /*
2113 * events is port event now ,
2114 * we need check the interrupt status which belongs to per port.
2115 */
2116
2117 if (phy->irq_status & PHYEV_DCDR_ERR) {
2118 mv_dprintk("phy %d STP decoding error.\n",
2119 phy_no + mvi->id*mvi->chip->n_phy);
2120 }
2121
2122 if (phy->irq_status & PHYEV_POOF) {
2123 mdelay(500);
2124 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2125 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2126 int ready;
2127 mvs_do_release_task(mvi, phy_no, NULL);
2128 phy->phy_event |= PHY_PLUG_OUT;
2129 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2130 mvs_handle_event(mvi,
2131 (void *)(unsigned long)phy_no,
2132 PHY_PLUG_EVENT);
2133 ready = mvs_is_phy_ready(mvi, phy_no);
2134 if (ready || dev_sata) {
2135 if (MVS_CHIP_DISP->stp_reset)
2136 MVS_CHIP_DISP->stp_reset(mvi,
2137 phy_no);
2138 else
2139 MVS_CHIP_DISP->phy_reset(mvi,
2140 phy_no, MVS_SOFT_RESET);
2141 return;
2142 }
2143 }
2144 }
2145
2146 if (phy->irq_status & PHYEV_COMWAKE) {
2147 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2148 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2149 tmp | PHYEV_SIG_FIS);
2150 if (phy->timer.function == NULL) {
2151 phy->timer.data = (unsigned long)phy;
2152 phy->timer.function = mvs_sig_time_out;
2153 phy->timer.expires = jiffies + 5*HZ;
2154 add_timer(&phy->timer);
2155 }
2156 }
2157 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2158 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2159 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2160 if (phy->phy_status) {
2161 mdelay(10);
2162 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2163 if (phy->phy_type & PORT_TYPE_SATA) {
2164 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2165 mvi, phy_no);
2166 tmp &= ~PHYEV_SIG_FIS;
2167 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2168 phy_no, tmp);
2169 }
2170 mvs_update_phyinfo(mvi, phy_no, 0);
2171 if (phy->phy_type & PORT_TYPE_SAS) {
2172 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2173 mdelay(10);
2174 }
2175
2176 mvs_bytes_dmaed(mvi, phy_no);
2177 /* whether driver is going to handle hot plug */
2178 if (phy->phy_event & PHY_PLUG_OUT) {
2179 mvs_port_notify_formed(&phy->sas_phy, 0);
2180 phy->phy_event &= ~PHY_PLUG_OUT;
2181 }
2182 } else {
2183 mv_dprintk("plugin interrupt but phy%d is gone\n",
2184 phy_no + mvi->id*mvi->chip->n_phy);
2185 }
2186 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2187 mv_dprintk("phy %d broadcast change.\n",
2188 phy_no + mvi->id*mvi->chip->n_phy);
2189 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2190 EXP_BRCT_CHG);
2191 }
2192 }
2193
2194 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2195 {
2196 u32 rx_prod_idx, rx_desc;
2197 bool attn = false;
2198
2199 /* the first dword in the RX ring is special: it contains
2200 * a mirror of the hardware's RX producer index, so that
2201 * we don't have to stall the CPU reading that register.
2202 * The actual RX ring is offset by one dword, due to this.
2203 */
2204 rx_prod_idx = mvi->rx_cons;
2205 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2206 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2207 return 0;
2208
2209 /* The CMPL_Q may come late, read from register and try again
2210 * note: if coalescing is enabled,
2211 * it will need to read from register every time for sure
2212 */
2213 if (unlikely(mvi->rx_cons == rx_prod_idx))
2214 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2215
2216 if (mvi->rx_cons == rx_prod_idx)
2217 return 0;
2218
2219 while (mvi->rx_cons != rx_prod_idx) {
2220 /* increment our internal RX consumer pointer */
2221 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2222 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2223
2224 if (likely(rx_desc & RXQ_DONE))
2225 mvs_slot_complete(mvi, rx_desc, 0);
2226 if (rx_desc & RXQ_ATTN) {
2227 attn = true;
2228 } else if (rx_desc & RXQ_ERR) {
2229 if (!(rx_desc & RXQ_DONE))
2230 mvs_slot_complete(mvi, rx_desc, 0);
2231 } else if (rx_desc & RXQ_SLOT_RESET) {
2232 mvs_slot_free(mvi, rx_desc);
2233 }
2234 }
2235
2236 if (attn && self_clear)
2237 MVS_CHIP_DISP->int_full(mvi);
2238 return 0;
2239 }
2240
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