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Merge branch 'acpica' into linux-next
[deliverable/linux.git] / drivers / scsi / mvsas / mv_sas.c
... / ...
CommitLineData
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
28static 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
39void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
40{
41 void *bitmap = mvi->tags;
42 clear_bit(tag, bitmap);
43}
44
45void mvs_tag_free(struct mvs_info *mvi, u32 tag)
46{
47 mvs_tag_clear(mvi, tag);
48}
49
50void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
51{
52 void *bitmap = mvi->tags;
53 set_bit(tag, bitmap);
54}
55
56inline 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
70void 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
77struct 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
105int 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
135struct 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
149static 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
161static 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
169void 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
179int 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 = -ENOSYS;
218 }
219 msleep(200);
220 return rc;
221}
222
223void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
224 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
235static 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
269 /* direct attached SAS device */
270 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
271 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
272 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00);
273 }
274 } else if (phy->phy_type & PORT_TYPE_SATA) {
275 /*Nothing*/
276 }
277 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
278
279 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
280
281 mvi->sas->notify_port_event(sas_phy,
282 PORTE_BYTES_DMAED);
283}
284
285void mvs_scan_start(struct Scsi_Host *shost)
286{
287 int i, j;
288 unsigned short core_nr;
289 struct mvs_info *mvi;
290 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
291 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
292
293 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
294
295 for (j = 0; j < core_nr; j++) {
296 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
297 for (i = 0; i < mvi->chip->n_phy; ++i)
298 mvs_bytes_dmaed(mvi, i);
299 }
300 mvs_prv->scan_finished = 1;
301}
302
303int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
304{
305 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
306 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
307
308 if (mvs_prv->scan_finished == 0)
309 return 0;
310
311 sas_drain_work(sha);
312 return 1;
313}
314
315static int mvs_task_prep_smp(struct mvs_info *mvi,
316 struct mvs_task_exec_info *tei)
317{
318 int elem, rc, i;
319 struct sas_ha_struct *sha = mvi->sas;
320 struct sas_task *task = tei->task;
321 struct mvs_cmd_hdr *hdr = tei->hdr;
322 struct domain_device *dev = task->dev;
323 struct asd_sas_port *sas_port = dev->port;
324 struct sas_phy *sphy = dev->phy;
325 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
326 struct scatterlist *sg_req, *sg_resp;
327 u32 req_len, resp_len, tag = tei->tag;
328 void *buf_tmp;
329 u8 *buf_oaf;
330 dma_addr_t buf_tmp_dma;
331 void *buf_prd;
332 struct mvs_slot_info *slot = &mvi->slot_info[tag];
333 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
334
335 /*
336 * DMA-map SMP request, response buffers
337 */
338 sg_req = &task->smp_task.smp_req;
339 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
340 if (!elem)
341 return -ENOMEM;
342 req_len = sg_dma_len(sg_req);
343
344 sg_resp = &task->smp_task.smp_resp;
345 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
346 if (!elem) {
347 rc = -ENOMEM;
348 goto err_out;
349 }
350 resp_len = SB_RFB_MAX;
351
352 /* must be in dwords */
353 if ((req_len & 0x3) || (resp_len & 0x3)) {
354 rc = -EINVAL;
355 goto err_out_2;
356 }
357
358 /*
359 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
360 */
361
362 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
363 buf_tmp = slot->buf;
364 buf_tmp_dma = slot->buf_dma;
365
366 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
367
368 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
369 buf_oaf = buf_tmp;
370 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
371
372 buf_tmp += MVS_OAF_SZ;
373 buf_tmp_dma += MVS_OAF_SZ;
374
375 /* region 3: PRD table *********************************** */
376 buf_prd = buf_tmp;
377 if (tei->n_elem)
378 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
379 else
380 hdr->prd_tbl = 0;
381
382 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
383 buf_tmp += i;
384 buf_tmp_dma += i;
385
386 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
387 slot->response = buf_tmp;
388 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
389 if (mvi->flags & MVF_FLAG_SOC)
390 hdr->reserved[0] = 0;
391
392 /*
393 * Fill in TX ring and command slot header
394 */
395 slot->tx = mvi->tx_prod;
396 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
397 TXQ_MODE_I | tag |
398 (MVS_PHY_ID << TXQ_PHY_SHIFT));
399
400 hdr->flags |= flags;
401 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
402 hdr->tags = cpu_to_le32(tag);
403 hdr->data_len = 0;
404
405 /* generate open address frame hdr (first 12 bytes) */
406 /* initiator, SMP, ftype 1h */
407 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
408 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
409 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
410 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
411
412 /* fill in PRD (scatter/gather) table, if any */
413 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
414
415 return 0;
416
417err_out_2:
418 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
419 PCI_DMA_FROMDEVICE);
420err_out:
421 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
422 PCI_DMA_TODEVICE);
423 return rc;
424}
425
426static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
427{
428 struct ata_queued_cmd *qc = task->uldd_task;
429
430 if (qc) {
431 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
432 qc->tf.command == ATA_CMD_FPDMA_READ ||
433 qc->tf.command == ATA_CMD_FPDMA_RECV ||
434 qc->tf.command == ATA_CMD_FPDMA_SEND ||
435 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
436 *tag = qc->tag;
437 return 1;
438 }
439 }
440
441 return 0;
442}
443
444static int mvs_task_prep_ata(struct mvs_info *mvi,
445 struct mvs_task_exec_info *tei)
446{
447 struct sas_task *task = tei->task;
448 struct domain_device *dev = task->dev;
449 struct mvs_device *mvi_dev = dev->lldd_dev;
450 struct mvs_cmd_hdr *hdr = tei->hdr;
451 struct asd_sas_port *sas_port = dev->port;
452 struct mvs_slot_info *slot;
453 void *buf_prd;
454 u32 tag = tei->tag, hdr_tag;
455 u32 flags, del_q;
456 void *buf_tmp;
457 u8 *buf_cmd, *buf_oaf;
458 dma_addr_t buf_tmp_dma;
459 u32 i, req_len, resp_len;
460 const u32 max_resp_len = SB_RFB_MAX;
461
462 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
463 mv_dprintk("Have not enough regiset for dev %d.\n",
464 mvi_dev->device_id);
465 return -EBUSY;
466 }
467 slot = &mvi->slot_info[tag];
468 slot->tx = mvi->tx_prod;
469 del_q = TXQ_MODE_I | tag |
470 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
471 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
472 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
473 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
474
475 if (task->data_dir == DMA_FROM_DEVICE)
476 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
477 else
478 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
479
480 if (task->ata_task.use_ncq)
481 flags |= MCH_FPDMA;
482 if (dev->sata_dev.class == ATA_DEV_ATAPI) {
483 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
484 flags |= MCH_ATAPI;
485 }
486
487 hdr->flags = cpu_to_le32(flags);
488
489 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
490 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
491 else
492 hdr_tag = tag;
493
494 hdr->tags = cpu_to_le32(hdr_tag);
495
496 hdr->data_len = cpu_to_le32(task->total_xfer_len);
497
498 /*
499 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
500 */
501
502 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
503 buf_cmd = buf_tmp = slot->buf;
504 buf_tmp_dma = slot->buf_dma;
505
506 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
507
508 buf_tmp += MVS_ATA_CMD_SZ;
509 buf_tmp_dma += MVS_ATA_CMD_SZ;
510
511 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
512 /* used for STP. unused for SATA? */
513 buf_oaf = buf_tmp;
514 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
515
516 buf_tmp += MVS_OAF_SZ;
517 buf_tmp_dma += MVS_OAF_SZ;
518
519 /* region 3: PRD table ********************************************* */
520 buf_prd = buf_tmp;
521
522 if (tei->n_elem)
523 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
524 else
525 hdr->prd_tbl = 0;
526 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
527
528 buf_tmp += i;
529 buf_tmp_dma += i;
530
531 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
532 slot->response = buf_tmp;
533 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
534 if (mvi->flags & MVF_FLAG_SOC)
535 hdr->reserved[0] = 0;
536
537 req_len = sizeof(struct host_to_dev_fis);
538 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
539 sizeof(struct mvs_err_info) - i;
540
541 /* request, response lengths */
542 resp_len = min(resp_len, max_resp_len);
543 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
544
545 if (likely(!task->ata_task.device_control_reg_update))
546 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
547 /* fill in command FIS and ATAPI CDB */
548 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
549 if (dev->sata_dev.class == ATA_DEV_ATAPI)
550 memcpy(buf_cmd + STP_ATAPI_CMD,
551 task->ata_task.atapi_packet, 16);
552
553 /* generate open address frame hdr (first 12 bytes) */
554 /* initiator, STP, ftype 1h */
555 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
556 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
557 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
558 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
559
560 /* fill in PRD (scatter/gather) table, if any */
561 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
562
563 if (task->data_dir == DMA_FROM_DEVICE)
564 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
565 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
566
567 return 0;
568}
569
570static int mvs_task_prep_ssp(struct mvs_info *mvi,
571 struct mvs_task_exec_info *tei, int is_tmf,
572 struct mvs_tmf_task *tmf)
573{
574 struct sas_task *task = tei->task;
575 struct mvs_cmd_hdr *hdr = tei->hdr;
576 struct mvs_port *port = tei->port;
577 struct domain_device *dev = task->dev;
578 struct mvs_device *mvi_dev = dev->lldd_dev;
579 struct asd_sas_port *sas_port = dev->port;
580 struct mvs_slot_info *slot;
581 void *buf_prd;
582 struct ssp_frame_hdr *ssp_hdr;
583 void *buf_tmp;
584 u8 *buf_cmd, *buf_oaf, fburst = 0;
585 dma_addr_t buf_tmp_dma;
586 u32 flags;
587 u32 resp_len, req_len, i, tag = tei->tag;
588 const u32 max_resp_len = SB_RFB_MAX;
589 u32 phy_mask;
590
591 slot = &mvi->slot_info[tag];
592
593 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
594 sas_port->phy_mask) & TXQ_PHY_MASK;
595
596 slot->tx = mvi->tx_prod;
597 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
598 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
599 (phy_mask << TXQ_PHY_SHIFT));
600
601 flags = MCH_RETRY;
602 if (task->ssp_task.enable_first_burst) {
603 flags |= MCH_FBURST;
604 fburst = (1 << 7);
605 }
606 if (is_tmf)
607 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
608 else
609 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
610
611 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
612 hdr->tags = cpu_to_le32(tag);
613 hdr->data_len = cpu_to_le32(task->total_xfer_len);
614
615 /*
616 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
617 */
618
619 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
620 buf_cmd = buf_tmp = slot->buf;
621 buf_tmp_dma = slot->buf_dma;
622
623 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
624
625 buf_tmp += MVS_SSP_CMD_SZ;
626 buf_tmp_dma += MVS_SSP_CMD_SZ;
627
628 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
629 buf_oaf = buf_tmp;
630 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
631
632 buf_tmp += MVS_OAF_SZ;
633 buf_tmp_dma += MVS_OAF_SZ;
634
635 /* region 3: PRD table ********************************************* */
636 buf_prd = buf_tmp;
637 if (tei->n_elem)
638 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
639 else
640 hdr->prd_tbl = 0;
641
642 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
643 buf_tmp += i;
644 buf_tmp_dma += i;
645
646 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
647 slot->response = buf_tmp;
648 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
649 if (mvi->flags & MVF_FLAG_SOC)
650 hdr->reserved[0] = 0;
651
652 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
653 sizeof(struct mvs_err_info) - i;
654 resp_len = min(resp_len, max_resp_len);
655
656 req_len = sizeof(struct ssp_frame_hdr) + 28;
657
658 /* request, response lengths */
659 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
660
661 /* generate open address frame hdr (first 12 bytes) */
662 /* initiator, SSP, ftype 1h */
663 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
664 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
665 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
666 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
667
668 /* fill in SSP frame header (Command Table.SSP frame header) */
669 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
670
671 if (is_tmf)
672 ssp_hdr->frame_type = SSP_TASK;
673 else
674 ssp_hdr->frame_type = SSP_COMMAND;
675
676 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
677 HASHED_SAS_ADDR_SIZE);
678 memcpy(ssp_hdr->hashed_src_addr,
679 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
680 ssp_hdr->tag = cpu_to_be16(tag);
681
682 /* fill in IU for TASK and Command Frame */
683 buf_cmd += sizeof(*ssp_hdr);
684 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
685
686 if (ssp_hdr->frame_type != SSP_TASK) {
687 buf_cmd[9] = fburst | task->ssp_task.task_attr |
688 (task->ssp_task.task_prio << 3);
689 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
690 task->ssp_task.cmd->cmd_len);
691 } else{
692 buf_cmd[10] = tmf->tmf;
693 switch (tmf->tmf) {
694 case TMF_ABORT_TASK:
695 case TMF_QUERY_TASK:
696 buf_cmd[12] =
697 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
698 buf_cmd[13] =
699 tmf->tag_of_task_to_be_managed & 0xff;
700 break;
701 default:
702 break;
703 }
704 }
705 /* fill in PRD (scatter/gather) table, if any */
706 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
707 return 0;
708}
709
710#define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
711static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
712 struct mvs_tmf_task *tmf, int *pass)
713{
714 struct domain_device *dev = task->dev;
715 struct mvs_device *mvi_dev = dev->lldd_dev;
716 struct mvs_task_exec_info tei;
717 struct mvs_slot_info *slot;
718 u32 tag = 0xdeadbeef, n_elem = 0;
719 int rc = 0;
720
721 if (!dev->port) {
722 struct task_status_struct *tsm = &task->task_status;
723
724 tsm->resp = SAS_TASK_UNDELIVERED;
725 tsm->stat = SAS_PHY_DOWN;
726 /*
727 * libsas will use dev->port, should
728 * not call task_done for sata
729 */
730 if (dev->dev_type != SAS_SATA_DEV)
731 task->task_done(task);
732 return rc;
733 }
734
735 if (DEV_IS_GONE(mvi_dev)) {
736 if (mvi_dev)
737 mv_dprintk("device %d not ready.\n",
738 mvi_dev->device_id);
739 else
740 mv_dprintk("device %016llx not ready.\n",
741 SAS_ADDR(dev->sas_addr));
742
743 rc = SAS_PHY_DOWN;
744 return rc;
745 }
746 tei.port = dev->port->lldd_port;
747 if (tei.port && !tei.port->port_attached && !tmf) {
748 if (sas_protocol_ata(task->task_proto)) {
749 struct task_status_struct *ts = &task->task_status;
750 mv_dprintk("SATA/STP port %d does not attach"
751 "device.\n", dev->port->id);
752 ts->resp = SAS_TASK_COMPLETE;
753 ts->stat = SAS_PHY_DOWN;
754
755 task->task_done(task);
756
757 } else {
758 struct task_status_struct *ts = &task->task_status;
759 mv_dprintk("SAS port %d does not attach"
760 "device.\n", dev->port->id);
761 ts->resp = SAS_TASK_UNDELIVERED;
762 ts->stat = SAS_PHY_DOWN;
763 task->task_done(task);
764 }
765 return rc;
766 }
767
768 if (!sas_protocol_ata(task->task_proto)) {
769 if (task->num_scatter) {
770 n_elem = dma_map_sg(mvi->dev,
771 task->scatter,
772 task->num_scatter,
773 task->data_dir);
774 if (!n_elem) {
775 rc = -ENOMEM;
776 goto prep_out;
777 }
778 }
779 } else {
780 n_elem = task->num_scatter;
781 }
782
783 rc = mvs_tag_alloc(mvi, &tag);
784 if (rc)
785 goto err_out;
786
787 slot = &mvi->slot_info[tag];
788
789 task->lldd_task = NULL;
790 slot->n_elem = n_elem;
791 slot->slot_tag = tag;
792
793 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
794 if (!slot->buf)
795 goto err_out_tag;
796 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
797
798 tei.task = task;
799 tei.hdr = &mvi->slot[tag];
800 tei.tag = tag;
801 tei.n_elem = n_elem;
802 switch (task->task_proto) {
803 case SAS_PROTOCOL_SMP:
804 rc = mvs_task_prep_smp(mvi, &tei);
805 break;
806 case SAS_PROTOCOL_SSP:
807 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
808 break;
809 case SAS_PROTOCOL_SATA:
810 case SAS_PROTOCOL_STP:
811 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
812 rc = mvs_task_prep_ata(mvi, &tei);
813 break;
814 default:
815 dev_printk(KERN_ERR, mvi->dev,
816 "unknown sas_task proto: 0x%x\n",
817 task->task_proto);
818 rc = -EINVAL;
819 break;
820 }
821
822 if (rc) {
823 mv_dprintk("rc is %x\n", rc);
824 goto err_out_slot_buf;
825 }
826 slot->task = task;
827 slot->port = tei.port;
828 task->lldd_task = slot;
829 list_add_tail(&slot->entry, &tei.port->list);
830 spin_lock(&task->task_state_lock);
831 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
832 spin_unlock(&task->task_state_lock);
833
834 mvi_dev->running_req++;
835 ++(*pass);
836 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
837
838 return rc;
839
840err_out_slot_buf:
841 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
842err_out_tag:
843 mvs_tag_free(mvi, tag);
844err_out:
845
846 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
847 if (!sas_protocol_ata(task->task_proto))
848 if (n_elem)
849 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
850 task->data_dir);
851prep_out:
852 return rc;
853}
854
855static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
856 struct completion *completion, int is_tmf,
857 struct mvs_tmf_task *tmf)
858{
859 struct mvs_info *mvi = NULL;
860 u32 rc = 0;
861 u32 pass = 0;
862 unsigned long flags = 0;
863
864 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
865
866 spin_lock_irqsave(&mvi->lock, flags);
867 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
868 if (rc)
869 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
870
871 if (likely(pass))
872 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
873 (MVS_CHIP_SLOT_SZ - 1));
874 spin_unlock_irqrestore(&mvi->lock, flags);
875
876 return rc;
877}
878
879int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
880{
881 return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
882}
883
884static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
885{
886 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
887 mvs_tag_clear(mvi, slot_idx);
888}
889
890static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
891 struct mvs_slot_info *slot, u32 slot_idx)
892{
893 if (!slot)
894 return;
895 if (!slot->task)
896 return;
897 if (!sas_protocol_ata(task->task_proto))
898 if (slot->n_elem)
899 dma_unmap_sg(mvi->dev, task->scatter,
900 slot->n_elem, task->data_dir);
901
902 switch (task->task_proto) {
903 case SAS_PROTOCOL_SMP:
904 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
905 PCI_DMA_FROMDEVICE);
906 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
907 PCI_DMA_TODEVICE);
908 break;
909
910 case SAS_PROTOCOL_SATA:
911 case SAS_PROTOCOL_STP:
912 case SAS_PROTOCOL_SSP:
913 default:
914 /* do nothing */
915 break;
916 }
917
918 if (slot->buf) {
919 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
920 slot->buf = NULL;
921 }
922 list_del_init(&slot->entry);
923 task->lldd_task = NULL;
924 slot->task = NULL;
925 slot->port = NULL;
926 slot->slot_tag = 0xFFFFFFFF;
927 mvs_slot_free(mvi, slot_idx);
928}
929
930static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
931{
932 struct mvs_phy *phy = &mvi->phy[phy_no];
933 struct mvs_port *port = phy->port;
934 int j, no;
935
936 for_each_phy(port->wide_port_phymap, j, no) {
937 if (j & 1) {
938 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
939 PHYR_WIDE_PORT);
940 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
941 port->wide_port_phymap);
942 } else {
943 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
944 PHYR_WIDE_PORT);
945 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
946 0);
947 }
948 }
949}
950
951static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
952{
953 u32 tmp;
954 struct mvs_phy *phy = &mvi->phy[i];
955 struct mvs_port *port = phy->port;
956
957 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
958 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
959 if (!port)
960 phy->phy_attached = 1;
961 return tmp;
962 }
963
964 if (port) {
965 if (phy->phy_type & PORT_TYPE_SAS) {
966 port->wide_port_phymap &= ~(1U << i);
967 if (!port->wide_port_phymap)
968 port->port_attached = 0;
969 mvs_update_wideport(mvi, i);
970 } else if (phy->phy_type & PORT_TYPE_SATA)
971 port->port_attached = 0;
972 phy->port = NULL;
973 phy->phy_attached = 0;
974 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
975 }
976 return 0;
977}
978
979static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
980{
981 u32 *s = (u32 *) buf;
982
983 if (!s)
984 return NULL;
985
986 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
987 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
988
989 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
990 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
991
992 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
993 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
994
995 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
996 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
997
998 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
999 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1000
1001 return s;
1002}
1003
1004static u32 mvs_is_sig_fis_received(u32 irq_status)
1005{
1006 return irq_status & PHYEV_SIG_FIS;
1007}
1008
1009static void mvs_sig_remove_timer(struct mvs_phy *phy)
1010{
1011 if (phy->timer.function)
1012 del_timer(&phy->timer);
1013 phy->timer.function = NULL;
1014}
1015
1016void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1017{
1018 struct mvs_phy *phy = &mvi->phy[i];
1019 struct sas_identify_frame *id;
1020
1021 id = (struct sas_identify_frame *)phy->frame_rcvd;
1022
1023 if (get_st) {
1024 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1025 phy->phy_status = mvs_is_phy_ready(mvi, i);
1026 }
1027
1028 if (phy->phy_status) {
1029 int oob_done = 0;
1030 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1031
1032 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1033
1034 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1035 if (phy->phy_type & PORT_TYPE_SATA) {
1036 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1037 if (mvs_is_sig_fis_received(phy->irq_status)) {
1038 mvs_sig_remove_timer(phy);
1039 phy->phy_attached = 1;
1040 phy->att_dev_sas_addr =
1041 i + mvi->id * mvi->chip->n_phy;
1042 if (oob_done)
1043 sas_phy->oob_mode = SATA_OOB_MODE;
1044 phy->frame_rcvd_size =
1045 sizeof(struct dev_to_host_fis);
1046 mvs_get_d2h_reg(mvi, i, id);
1047 } else {
1048 u32 tmp;
1049 dev_printk(KERN_DEBUG, mvi->dev,
1050 "Phy%d : No sig fis\n", i);
1051 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1052 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1053 tmp | PHYEV_SIG_FIS);
1054 phy->phy_attached = 0;
1055 phy->phy_type &= ~PORT_TYPE_SATA;
1056 goto out_done;
1057 }
1058 } else if (phy->phy_type & PORT_TYPE_SAS
1059 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1060 phy->phy_attached = 1;
1061 phy->identify.device_type =
1062 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1063
1064 if (phy->identify.device_type == SAS_END_DEVICE)
1065 phy->identify.target_port_protocols =
1066 SAS_PROTOCOL_SSP;
1067 else if (phy->identify.device_type != SAS_PHY_UNUSED)
1068 phy->identify.target_port_protocols =
1069 SAS_PROTOCOL_SMP;
1070 if (oob_done)
1071 sas_phy->oob_mode = SAS_OOB_MODE;
1072 phy->frame_rcvd_size =
1073 sizeof(struct sas_identify_frame);
1074 }
1075 memcpy(sas_phy->attached_sas_addr,
1076 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1077
1078 if (MVS_CHIP_DISP->phy_work_around)
1079 MVS_CHIP_DISP->phy_work_around(mvi, i);
1080 }
1081 mv_dprintk("phy %d attach dev info is %x\n",
1082 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1083 mv_dprintk("phy %d attach sas addr is %llx\n",
1084 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1085out_done:
1086 if (get_st)
1087 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1088}
1089
1090static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1091{
1092 struct sas_ha_struct *sas_ha = sas_phy->ha;
1093 struct mvs_info *mvi = NULL; int i = 0, hi;
1094 struct mvs_phy *phy = sas_phy->lldd_phy;
1095 struct asd_sas_port *sas_port = sas_phy->port;
1096 struct mvs_port *port;
1097 unsigned long flags = 0;
1098 if (!sas_port)
1099 return;
1100
1101 while (sas_ha->sas_phy[i]) {
1102 if (sas_ha->sas_phy[i] == sas_phy)
1103 break;
1104 i++;
1105 }
1106 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1107 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1108 if (i >= mvi->chip->n_phy)
1109 port = &mvi->port[i - mvi->chip->n_phy];
1110 else
1111 port = &mvi->port[i];
1112 if (lock)
1113 spin_lock_irqsave(&mvi->lock, flags);
1114 port->port_attached = 1;
1115 phy->port = port;
1116 sas_port->lldd_port = port;
1117 if (phy->phy_type & PORT_TYPE_SAS) {
1118 port->wide_port_phymap = sas_port->phy_mask;
1119 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1120 mvs_update_wideport(mvi, sas_phy->id);
1121
1122 /* direct attached SAS device */
1123 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1124 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1125 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1126 }
1127 }
1128 if (lock)
1129 spin_unlock_irqrestore(&mvi->lock, flags);
1130}
1131
1132static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1133{
1134 struct domain_device *dev;
1135 struct mvs_phy *phy = sas_phy->lldd_phy;
1136 struct mvs_info *mvi = phy->mvi;
1137 struct asd_sas_port *port = sas_phy->port;
1138 int phy_no = 0;
1139
1140 while (phy != &mvi->phy[phy_no]) {
1141 phy_no++;
1142 if (phy_no >= MVS_MAX_PHYS)
1143 return;
1144 }
1145 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1146 mvs_do_release_task(phy->mvi, phy_no, dev);
1147
1148}
1149
1150
1151void mvs_port_formed(struct asd_sas_phy *sas_phy)
1152{
1153 mvs_port_notify_formed(sas_phy, 1);
1154}
1155
1156void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1157{
1158 mvs_port_notify_deformed(sas_phy, 1);
1159}
1160
1161struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1162{
1163 u32 dev;
1164 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1165 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1166 mvi->devices[dev].device_id = dev;
1167 return &mvi->devices[dev];
1168 }
1169 }
1170
1171 if (dev == MVS_MAX_DEVICES)
1172 mv_printk("max support %d devices, ignore ..\n",
1173 MVS_MAX_DEVICES);
1174
1175 return NULL;
1176}
1177
1178void mvs_free_dev(struct mvs_device *mvi_dev)
1179{
1180 u32 id = mvi_dev->device_id;
1181 memset(mvi_dev, 0, sizeof(*mvi_dev));
1182 mvi_dev->device_id = id;
1183 mvi_dev->dev_type = SAS_PHY_UNUSED;
1184 mvi_dev->dev_status = MVS_DEV_NORMAL;
1185 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1186}
1187
1188int mvs_dev_found_notify(struct domain_device *dev, int lock)
1189{
1190 unsigned long flags = 0;
1191 int res = 0;
1192 struct mvs_info *mvi = NULL;
1193 struct domain_device *parent_dev = dev->parent;
1194 struct mvs_device *mvi_device;
1195
1196 mvi = mvs_find_dev_mvi(dev);
1197
1198 if (lock)
1199 spin_lock_irqsave(&mvi->lock, flags);
1200
1201 mvi_device = mvs_alloc_dev(mvi);
1202 if (!mvi_device) {
1203 res = -1;
1204 goto found_out;
1205 }
1206 dev->lldd_dev = mvi_device;
1207 mvi_device->dev_status = MVS_DEV_NORMAL;
1208 mvi_device->dev_type = dev->dev_type;
1209 mvi_device->mvi_info = mvi;
1210 mvi_device->sas_device = dev;
1211 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1212 int phy_id;
1213 u8 phy_num = parent_dev->ex_dev.num_phys;
1214 struct ex_phy *phy;
1215 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1216 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1217 if (SAS_ADDR(phy->attached_sas_addr) ==
1218 SAS_ADDR(dev->sas_addr)) {
1219 mvi_device->attached_phy = phy_id;
1220 break;
1221 }
1222 }
1223
1224 if (phy_id == phy_num) {
1225 mv_printk("Error: no attached dev:%016llx"
1226 "at ex:%016llx.\n",
1227 SAS_ADDR(dev->sas_addr),
1228 SAS_ADDR(parent_dev->sas_addr));
1229 res = -1;
1230 }
1231 }
1232
1233found_out:
1234 if (lock)
1235 spin_unlock_irqrestore(&mvi->lock, flags);
1236 return res;
1237}
1238
1239int mvs_dev_found(struct domain_device *dev)
1240{
1241 return mvs_dev_found_notify(dev, 1);
1242}
1243
1244void mvs_dev_gone_notify(struct domain_device *dev)
1245{
1246 unsigned long flags = 0;
1247 struct mvs_device *mvi_dev = dev->lldd_dev;
1248 struct mvs_info *mvi;
1249
1250 if (!mvi_dev) {
1251 mv_dprintk("found dev has gone.\n");
1252 return;
1253 }
1254
1255 mvi = mvi_dev->mvi_info;
1256
1257 spin_lock_irqsave(&mvi->lock, flags);
1258
1259 mv_dprintk("found dev[%d:%x] is gone.\n",
1260 mvi_dev->device_id, mvi_dev->dev_type);
1261 mvs_release_task(mvi, dev);
1262 mvs_free_reg_set(mvi, mvi_dev);
1263 mvs_free_dev(mvi_dev);
1264
1265 dev->lldd_dev = NULL;
1266 mvi_dev->sas_device = NULL;
1267
1268 spin_unlock_irqrestore(&mvi->lock, flags);
1269}
1270
1271
1272void mvs_dev_gone(struct domain_device *dev)
1273{
1274 mvs_dev_gone_notify(dev);
1275}
1276
1277static void mvs_task_done(struct sas_task *task)
1278{
1279 if (!del_timer(&task->slow_task->timer))
1280 return;
1281 complete(&task->slow_task->completion);
1282}
1283
1284static void mvs_tmf_timedout(unsigned long data)
1285{
1286 struct sas_task *task = (struct sas_task *)data;
1287
1288 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1289 complete(&task->slow_task->completion);
1290}
1291
1292#define MVS_TASK_TIMEOUT 20
1293static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1294 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1295{
1296 int res, retry;
1297 struct sas_task *task = NULL;
1298
1299 for (retry = 0; retry < 3; retry++) {
1300 task = sas_alloc_slow_task(GFP_KERNEL);
1301 if (!task)
1302 return -ENOMEM;
1303
1304 task->dev = dev;
1305 task->task_proto = dev->tproto;
1306
1307 memcpy(&task->ssp_task, parameter, para_len);
1308 task->task_done = mvs_task_done;
1309
1310 task->slow_task->timer.data = (unsigned long) task;
1311 task->slow_task->timer.function = mvs_tmf_timedout;
1312 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1313 add_timer(&task->slow_task->timer);
1314
1315 res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
1316
1317 if (res) {
1318 del_timer(&task->slow_task->timer);
1319 mv_printk("executing internal task failed:%d\n", res);
1320 goto ex_err;
1321 }
1322
1323 wait_for_completion(&task->slow_task->completion);
1324 res = TMF_RESP_FUNC_FAILED;
1325 /* Even TMF timed out, return direct. */
1326 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1327 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1328 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1329 goto ex_err;
1330 }
1331 }
1332
1333 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1334 task->task_status.stat == SAM_STAT_GOOD) {
1335 res = TMF_RESP_FUNC_COMPLETE;
1336 break;
1337 }
1338
1339 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1340 task->task_status.stat == SAS_DATA_UNDERRUN) {
1341 /* no error, but return the number of bytes of
1342 * underrun */
1343 res = task->task_status.residual;
1344 break;
1345 }
1346
1347 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1348 task->task_status.stat == SAS_DATA_OVERRUN) {
1349 mv_dprintk("blocked task error.\n");
1350 res = -EMSGSIZE;
1351 break;
1352 } else {
1353 mv_dprintk(" task to dev %016llx response: 0x%x "
1354 "status 0x%x\n",
1355 SAS_ADDR(dev->sas_addr),
1356 task->task_status.resp,
1357 task->task_status.stat);
1358 sas_free_task(task);
1359 task = NULL;
1360
1361 }
1362 }
1363ex_err:
1364 BUG_ON(retry == 3 && task != NULL);
1365 sas_free_task(task);
1366 return res;
1367}
1368
1369static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1370 u8 *lun, struct mvs_tmf_task *tmf)
1371{
1372 struct sas_ssp_task ssp_task;
1373 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1374 return TMF_RESP_FUNC_ESUPP;
1375
1376 memcpy(ssp_task.LUN, lun, 8);
1377
1378 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1379 sizeof(ssp_task), tmf);
1380}
1381
1382
1383/* Standard mandates link reset for ATA (type 0)
1384 and hard reset for SSP (type 1) , only for RECOVERY */
1385static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1386{
1387 int rc;
1388 struct sas_phy *phy = sas_get_local_phy(dev);
1389 int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1390 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1391 rc = sas_phy_reset(phy, reset_type);
1392 sas_put_local_phy(phy);
1393 msleep(2000);
1394 return rc;
1395}
1396
1397/* mandatory SAM-3 */
1398int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1399{
1400 unsigned long flags;
1401 int rc = TMF_RESP_FUNC_FAILED;
1402 struct mvs_tmf_task tmf_task;
1403 struct mvs_device * mvi_dev = dev->lldd_dev;
1404 struct mvs_info *mvi = mvi_dev->mvi_info;
1405
1406 tmf_task.tmf = TMF_LU_RESET;
1407 mvi_dev->dev_status = MVS_DEV_EH;
1408 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1409 if (rc == TMF_RESP_FUNC_COMPLETE) {
1410 spin_lock_irqsave(&mvi->lock, flags);
1411 mvs_release_task(mvi, dev);
1412 spin_unlock_irqrestore(&mvi->lock, flags);
1413 }
1414 /* If failed, fall-through I_T_Nexus reset */
1415 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1416 mvi_dev->device_id, rc);
1417 return rc;
1418}
1419
1420int mvs_I_T_nexus_reset(struct domain_device *dev)
1421{
1422 unsigned long flags;
1423 int rc = TMF_RESP_FUNC_FAILED;
1424 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1425 struct mvs_info *mvi = mvi_dev->mvi_info;
1426
1427 if (mvi_dev->dev_status != MVS_DEV_EH)
1428 return TMF_RESP_FUNC_COMPLETE;
1429 else
1430 mvi_dev->dev_status = MVS_DEV_NORMAL;
1431 rc = mvs_debug_I_T_nexus_reset(dev);
1432 mv_printk("%s for device[%x]:rc= %d\n",
1433 __func__, mvi_dev->device_id, rc);
1434
1435 spin_lock_irqsave(&mvi->lock, flags);
1436 mvs_release_task(mvi, dev);
1437 spin_unlock_irqrestore(&mvi->lock, flags);
1438
1439 return rc;
1440}
1441/* optional SAM-3 */
1442int mvs_query_task(struct sas_task *task)
1443{
1444 u32 tag;
1445 struct scsi_lun lun;
1446 struct mvs_tmf_task tmf_task;
1447 int rc = TMF_RESP_FUNC_FAILED;
1448
1449 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1450 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1451 struct domain_device *dev = task->dev;
1452 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1453 struct mvs_info *mvi = mvi_dev->mvi_info;
1454
1455 int_to_scsilun(cmnd->device->lun, &lun);
1456 rc = mvs_find_tag(mvi, task, &tag);
1457 if (rc == 0) {
1458 rc = TMF_RESP_FUNC_FAILED;
1459 return rc;
1460 }
1461
1462 tmf_task.tmf = TMF_QUERY_TASK;
1463 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1464
1465 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1466 switch (rc) {
1467 /* The task is still in Lun, release it then */
1468 case TMF_RESP_FUNC_SUCC:
1469 /* The task is not in Lun or failed, reset the phy */
1470 case TMF_RESP_FUNC_FAILED:
1471 case TMF_RESP_FUNC_COMPLETE:
1472 break;
1473 }
1474 }
1475 mv_printk("%s:rc= %d\n", __func__, rc);
1476 return rc;
1477}
1478
1479/* mandatory SAM-3, still need free task/slot info */
1480int mvs_abort_task(struct sas_task *task)
1481{
1482 struct scsi_lun lun;
1483 struct mvs_tmf_task tmf_task;
1484 struct domain_device *dev = task->dev;
1485 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1486 struct mvs_info *mvi;
1487 int rc = TMF_RESP_FUNC_FAILED;
1488 unsigned long flags;
1489 u32 tag;
1490
1491 if (!mvi_dev) {
1492 mv_printk("Device has removed\n");
1493 return TMF_RESP_FUNC_FAILED;
1494 }
1495
1496 mvi = mvi_dev->mvi_info;
1497
1498 spin_lock_irqsave(&task->task_state_lock, flags);
1499 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1500 spin_unlock_irqrestore(&task->task_state_lock, flags);
1501 rc = TMF_RESP_FUNC_COMPLETE;
1502 goto out;
1503 }
1504 spin_unlock_irqrestore(&task->task_state_lock, flags);
1505 mvi_dev->dev_status = MVS_DEV_EH;
1506 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1507 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1508
1509 int_to_scsilun(cmnd->device->lun, &lun);
1510 rc = mvs_find_tag(mvi, task, &tag);
1511 if (rc == 0) {
1512 mv_printk("No such tag in %s\n", __func__);
1513 rc = TMF_RESP_FUNC_FAILED;
1514 return rc;
1515 }
1516
1517 tmf_task.tmf = TMF_ABORT_TASK;
1518 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1519
1520 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1521
1522 /* if successful, clear the task and callback forwards.*/
1523 if (rc == TMF_RESP_FUNC_COMPLETE) {
1524 u32 slot_no;
1525 struct mvs_slot_info *slot;
1526
1527 if (task->lldd_task) {
1528 slot = task->lldd_task;
1529 slot_no = (u32) (slot - mvi->slot_info);
1530 spin_lock_irqsave(&mvi->lock, flags);
1531 mvs_slot_complete(mvi, slot_no, 1);
1532 spin_unlock_irqrestore(&mvi->lock, flags);
1533 }
1534 }
1535
1536 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1537 task->task_proto & SAS_PROTOCOL_STP) {
1538 if (SAS_SATA_DEV == dev->dev_type) {
1539 struct mvs_slot_info *slot = task->lldd_task;
1540 u32 slot_idx = (u32)(slot - mvi->slot_info);
1541 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1542 "slot=%p slot_idx=x%x\n",
1543 mvi, task, slot, slot_idx);
1544 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1545 mvs_slot_task_free(mvi, task, slot, slot_idx);
1546 rc = TMF_RESP_FUNC_COMPLETE;
1547 goto out;
1548 }
1549
1550 }
1551out:
1552 if (rc != TMF_RESP_FUNC_COMPLETE)
1553 mv_printk("%s:rc= %d\n", __func__, rc);
1554 return rc;
1555}
1556
1557int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1558{
1559 int rc = TMF_RESP_FUNC_FAILED;
1560 struct mvs_tmf_task tmf_task;
1561
1562 tmf_task.tmf = TMF_ABORT_TASK_SET;
1563 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1564
1565 return rc;
1566}
1567
1568int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1569{
1570 int rc = TMF_RESP_FUNC_FAILED;
1571 struct mvs_tmf_task tmf_task;
1572
1573 tmf_task.tmf = TMF_CLEAR_ACA;
1574 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1575
1576 return rc;
1577}
1578
1579int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1580{
1581 int rc = TMF_RESP_FUNC_FAILED;
1582 struct mvs_tmf_task tmf_task;
1583
1584 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1585 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1586
1587 return rc;
1588}
1589
1590static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1591 u32 slot_idx, int err)
1592{
1593 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1594 struct task_status_struct *tstat = &task->task_status;
1595 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1596 int stat = SAM_STAT_GOOD;
1597
1598
1599 resp->frame_len = sizeof(struct dev_to_host_fis);
1600 memcpy(&resp->ending_fis[0],
1601 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1602 sizeof(struct dev_to_host_fis));
1603 tstat->buf_valid_size = sizeof(*resp);
1604 if (unlikely(err)) {
1605 if (unlikely(err & CMD_ISS_STPD))
1606 stat = SAS_OPEN_REJECT;
1607 else
1608 stat = SAS_PROTO_RESPONSE;
1609 }
1610
1611 return stat;
1612}
1613
1614void mvs_set_sense(u8 *buffer, int len, int d_sense,
1615 int key, int asc, int ascq)
1616{
1617 memset(buffer, 0, len);
1618
1619 if (d_sense) {
1620 /* Descriptor format */
1621 if (len < 4) {
1622 mv_printk("Length %d of sense buffer too small to "
1623 "fit sense %x:%x:%x", len, key, asc, ascq);
1624 }
1625
1626 buffer[0] = 0x72; /* Response Code */
1627 if (len > 1)
1628 buffer[1] = key; /* Sense Key */
1629 if (len > 2)
1630 buffer[2] = asc; /* ASC */
1631 if (len > 3)
1632 buffer[3] = ascq; /* ASCQ */
1633 } else {
1634 if (len < 14) {
1635 mv_printk("Length %d of sense buffer too small to "
1636 "fit sense %x:%x:%x", len, key, asc, ascq);
1637 }
1638
1639 buffer[0] = 0x70; /* Response Code */
1640 if (len > 2)
1641 buffer[2] = key; /* Sense Key */
1642 if (len > 7)
1643 buffer[7] = 0x0a; /* Additional Sense Length */
1644 if (len > 12)
1645 buffer[12] = asc; /* ASC */
1646 if (len > 13)
1647 buffer[13] = ascq; /* ASCQ */
1648 }
1649
1650 return;
1651}
1652
1653void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1654 u8 key, u8 asc, u8 asc_q)
1655{
1656 iu->datapres = 2;
1657 iu->response_data_len = 0;
1658 iu->sense_data_len = 17;
1659 iu->status = 02;
1660 mvs_set_sense(iu->sense_data, 17, 0,
1661 key, asc, asc_q);
1662}
1663
1664static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1665 u32 slot_idx)
1666{
1667 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1668 int stat;
1669 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1670 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1671 u32 tfs = 0;
1672 enum mvs_port_type type = PORT_TYPE_SAS;
1673
1674 if (err_dw0 & CMD_ISS_STPD)
1675 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1676
1677 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1678
1679 stat = SAM_STAT_CHECK_CONDITION;
1680 switch (task->task_proto) {
1681 case SAS_PROTOCOL_SSP:
1682 {
1683 stat = SAS_ABORTED_TASK;
1684 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1685 struct ssp_response_iu *iu = slot->response +
1686 sizeof(struct mvs_err_info);
1687 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1688 sas_ssp_task_response(mvi->dev, task, iu);
1689 stat = SAM_STAT_CHECK_CONDITION;
1690 }
1691 if (err_dw1 & bit(31))
1692 mv_printk("reuse same slot, retry command.\n");
1693 break;
1694 }
1695 case SAS_PROTOCOL_SMP:
1696 stat = SAM_STAT_CHECK_CONDITION;
1697 break;
1698
1699 case SAS_PROTOCOL_SATA:
1700 case SAS_PROTOCOL_STP:
1701 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1702 {
1703 task->ata_task.use_ncq = 0;
1704 stat = SAS_PROTO_RESPONSE;
1705 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1706 }
1707 break;
1708 default:
1709 break;
1710 }
1711
1712 return stat;
1713}
1714
1715int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1716{
1717 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1718 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1719 struct sas_task *task = slot->task;
1720 struct mvs_device *mvi_dev = NULL;
1721 struct task_status_struct *tstat;
1722 struct domain_device *dev;
1723 u32 aborted;
1724
1725 void *to;
1726 enum exec_status sts;
1727
1728 if (unlikely(!task || !task->lldd_task || !task->dev))
1729 return -1;
1730
1731 tstat = &task->task_status;
1732 dev = task->dev;
1733 mvi_dev = dev->lldd_dev;
1734
1735 spin_lock(&task->task_state_lock);
1736 task->task_state_flags &=
1737 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1738 task->task_state_flags |= SAS_TASK_STATE_DONE;
1739 /* race condition*/
1740 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1741 spin_unlock(&task->task_state_lock);
1742
1743 memset(tstat, 0, sizeof(*tstat));
1744 tstat->resp = SAS_TASK_COMPLETE;
1745
1746 if (unlikely(aborted)) {
1747 tstat->stat = SAS_ABORTED_TASK;
1748 if (mvi_dev && mvi_dev->running_req)
1749 mvi_dev->running_req--;
1750 if (sas_protocol_ata(task->task_proto))
1751 mvs_free_reg_set(mvi, mvi_dev);
1752
1753 mvs_slot_task_free(mvi, task, slot, slot_idx);
1754 return -1;
1755 }
1756
1757 /* when no device attaching, go ahead and complete by error handling*/
1758 if (unlikely(!mvi_dev || flags)) {
1759 if (!mvi_dev)
1760 mv_dprintk("port has not device.\n");
1761 tstat->stat = SAS_PHY_DOWN;
1762 goto out;
1763 }
1764
1765 /*
1766 * error info record present; slot->response is 32 bit aligned but may
1767 * not be 64 bit aligned, so check for zero in two 32 bit reads
1768 */
1769 if (unlikely((rx_desc & RXQ_ERR)
1770 && (*((u32 *)slot->response)
1771 || *(((u32 *)slot->response) + 1)))) {
1772 mv_dprintk("port %d slot %d rx_desc %X has error info"
1773 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1774 rx_desc, get_unaligned_le64(slot->response));
1775 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1776 tstat->resp = SAS_TASK_COMPLETE;
1777 goto out;
1778 }
1779
1780 switch (task->task_proto) {
1781 case SAS_PROTOCOL_SSP:
1782 /* hw says status == 0, datapres == 0 */
1783 if (rx_desc & RXQ_GOOD) {
1784 tstat->stat = SAM_STAT_GOOD;
1785 tstat->resp = SAS_TASK_COMPLETE;
1786 }
1787 /* response frame present */
1788 else if (rx_desc & RXQ_RSP) {
1789 struct ssp_response_iu *iu = slot->response +
1790 sizeof(struct mvs_err_info);
1791 sas_ssp_task_response(mvi->dev, task, iu);
1792 } else
1793 tstat->stat = SAM_STAT_CHECK_CONDITION;
1794 break;
1795
1796 case SAS_PROTOCOL_SMP: {
1797 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1798 tstat->stat = SAM_STAT_GOOD;
1799 to = kmap_atomic(sg_page(sg_resp));
1800 memcpy(to + sg_resp->offset,
1801 slot->response + sizeof(struct mvs_err_info),
1802 sg_dma_len(sg_resp));
1803 kunmap_atomic(to);
1804 break;
1805 }
1806
1807 case SAS_PROTOCOL_SATA:
1808 case SAS_PROTOCOL_STP:
1809 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1810 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1811 break;
1812 }
1813
1814 default:
1815 tstat->stat = SAM_STAT_CHECK_CONDITION;
1816 break;
1817 }
1818 if (!slot->port->port_attached) {
1819 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1820 tstat->stat = SAS_PHY_DOWN;
1821 }
1822
1823
1824out:
1825 if (mvi_dev && mvi_dev->running_req) {
1826 mvi_dev->running_req--;
1827 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1828 mvs_free_reg_set(mvi, mvi_dev);
1829 }
1830 mvs_slot_task_free(mvi, task, slot, slot_idx);
1831 sts = tstat->stat;
1832
1833 spin_unlock(&mvi->lock);
1834 if (task->task_done)
1835 task->task_done(task);
1836
1837 spin_lock(&mvi->lock);
1838
1839 return sts;
1840}
1841
1842void mvs_do_release_task(struct mvs_info *mvi,
1843 int phy_no, struct domain_device *dev)
1844{
1845 u32 slot_idx;
1846 struct mvs_phy *phy;
1847 struct mvs_port *port;
1848 struct mvs_slot_info *slot, *slot2;
1849
1850 phy = &mvi->phy[phy_no];
1851 port = phy->port;
1852 if (!port)
1853 return;
1854 /* clean cmpl queue in case request is already finished */
1855 mvs_int_rx(mvi, false);
1856
1857
1858
1859 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1860 struct sas_task *task;
1861 slot_idx = (u32) (slot - mvi->slot_info);
1862 task = slot->task;
1863
1864 if (dev && task->dev != dev)
1865 continue;
1866
1867 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1868 slot_idx, slot->slot_tag, task);
1869 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1870
1871 mvs_slot_complete(mvi, slot_idx, 1);
1872 }
1873}
1874
1875void mvs_release_task(struct mvs_info *mvi,
1876 struct domain_device *dev)
1877{
1878 int i, phyno[WIDE_PORT_MAX_PHY], num;
1879 num = mvs_find_dev_phyno(dev, phyno);
1880 for (i = 0; i < num; i++)
1881 mvs_do_release_task(mvi, phyno[i], dev);
1882}
1883
1884static void mvs_phy_disconnected(struct mvs_phy *phy)
1885{
1886 phy->phy_attached = 0;
1887 phy->att_dev_info = 0;
1888 phy->att_dev_sas_addr = 0;
1889}
1890
1891static void mvs_work_queue(struct work_struct *work)
1892{
1893 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1894 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1895 struct mvs_info *mvi = mwq->mvi;
1896 unsigned long flags;
1897 u32 phy_no = (unsigned long) mwq->data;
1898 struct sas_ha_struct *sas_ha = mvi->sas;
1899 struct mvs_phy *phy = &mvi->phy[phy_no];
1900 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1901
1902 spin_lock_irqsave(&mvi->lock, flags);
1903 if (mwq->handler & PHY_PLUG_EVENT) {
1904
1905 if (phy->phy_event & PHY_PLUG_OUT) {
1906 u32 tmp;
1907 struct sas_identify_frame *id;
1908 id = (struct sas_identify_frame *)phy->frame_rcvd;
1909 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1910 phy->phy_event &= ~PHY_PLUG_OUT;
1911 if (!(tmp & PHY_READY_MASK)) {
1912 sas_phy_disconnected(sas_phy);
1913 mvs_phy_disconnected(phy);
1914 sas_ha->notify_phy_event(sas_phy,
1915 PHYE_LOSS_OF_SIGNAL);
1916 mv_dprintk("phy%d Removed Device\n", phy_no);
1917 } else {
1918 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1919 mvs_update_phyinfo(mvi, phy_no, 1);
1920 mvs_bytes_dmaed(mvi, phy_no);
1921 mvs_port_notify_formed(sas_phy, 0);
1922 mv_dprintk("phy%d Attached Device\n", phy_no);
1923 }
1924 }
1925 } else if (mwq->handler & EXP_BRCT_CHG) {
1926 phy->phy_event &= ~EXP_BRCT_CHG;
1927 sas_ha->notify_port_event(sas_phy,
1928 PORTE_BROADCAST_RCVD);
1929 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1930 }
1931 list_del(&mwq->entry);
1932 spin_unlock_irqrestore(&mvi->lock, flags);
1933 kfree(mwq);
1934}
1935
1936static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1937{
1938 struct mvs_wq *mwq;
1939 int ret = 0;
1940
1941 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1942 if (mwq) {
1943 mwq->mvi = mvi;
1944 mwq->data = data;
1945 mwq->handler = handler;
1946 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1947 list_add_tail(&mwq->entry, &mvi->wq_list);
1948 schedule_delayed_work(&mwq->work_q, HZ * 2);
1949 } else
1950 ret = -ENOMEM;
1951
1952 return ret;
1953}
1954
1955static void mvs_sig_time_out(unsigned long tphy)
1956{
1957 struct mvs_phy *phy = (struct mvs_phy *)tphy;
1958 struct mvs_info *mvi = phy->mvi;
1959 u8 phy_no;
1960
1961 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1962 if (&mvi->phy[phy_no] == phy) {
1963 mv_dprintk("Get signature time out, reset phy %d\n",
1964 phy_no+mvi->id*mvi->chip->n_phy);
1965 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1966 }
1967 }
1968}
1969
1970void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1971{
1972 u32 tmp;
1973 struct mvs_phy *phy = &mvi->phy[phy_no];
1974
1975 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1976 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1977 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1978 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1979 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1980 phy->irq_status);
1981
1982 /*
1983 * events is port event now ,
1984 * we need check the interrupt status which belongs to per port.
1985 */
1986
1987 if (phy->irq_status & PHYEV_DCDR_ERR) {
1988 mv_dprintk("phy %d STP decoding error.\n",
1989 phy_no + mvi->id*mvi->chip->n_phy);
1990 }
1991
1992 if (phy->irq_status & PHYEV_POOF) {
1993 mdelay(500);
1994 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1995 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1996 int ready;
1997 mvs_do_release_task(mvi, phy_no, NULL);
1998 phy->phy_event |= PHY_PLUG_OUT;
1999 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2000 mvs_handle_event(mvi,
2001 (void *)(unsigned long)phy_no,
2002 PHY_PLUG_EVENT);
2003 ready = mvs_is_phy_ready(mvi, phy_no);
2004 if (ready || dev_sata) {
2005 if (MVS_CHIP_DISP->stp_reset)
2006 MVS_CHIP_DISP->stp_reset(mvi,
2007 phy_no);
2008 else
2009 MVS_CHIP_DISP->phy_reset(mvi,
2010 phy_no, MVS_SOFT_RESET);
2011 return;
2012 }
2013 }
2014 }
2015
2016 if (phy->irq_status & PHYEV_COMWAKE) {
2017 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2018 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2019 tmp | PHYEV_SIG_FIS);
2020 if (phy->timer.function == NULL) {
2021 phy->timer.data = (unsigned long)phy;
2022 phy->timer.function = mvs_sig_time_out;
2023 phy->timer.expires = jiffies + 5*HZ;
2024 add_timer(&phy->timer);
2025 }
2026 }
2027 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2028 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2029 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2030 if (phy->phy_status) {
2031 mdelay(10);
2032 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2033 if (phy->phy_type & PORT_TYPE_SATA) {
2034 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2035 mvi, phy_no);
2036 tmp &= ~PHYEV_SIG_FIS;
2037 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2038 phy_no, tmp);
2039 }
2040 mvs_update_phyinfo(mvi, phy_no, 0);
2041 if (phy->phy_type & PORT_TYPE_SAS) {
2042 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2043 mdelay(10);
2044 }
2045
2046 mvs_bytes_dmaed(mvi, phy_no);
2047 /* whether driver is going to handle hot plug */
2048 if (phy->phy_event & PHY_PLUG_OUT) {
2049 mvs_port_notify_formed(&phy->sas_phy, 0);
2050 phy->phy_event &= ~PHY_PLUG_OUT;
2051 }
2052 } else {
2053 mv_dprintk("plugin interrupt but phy%d is gone\n",
2054 phy_no + mvi->id*mvi->chip->n_phy);
2055 }
2056 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2057 mv_dprintk("phy %d broadcast change.\n",
2058 phy_no + mvi->id*mvi->chip->n_phy);
2059 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2060 EXP_BRCT_CHG);
2061 }
2062}
2063
2064int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2065{
2066 u32 rx_prod_idx, rx_desc;
2067 bool attn = false;
2068
2069 /* the first dword in the RX ring is special: it contains
2070 * a mirror of the hardware's RX producer index, so that
2071 * we don't have to stall the CPU reading that register.
2072 * The actual RX ring is offset by one dword, due to this.
2073 */
2074 rx_prod_idx = mvi->rx_cons;
2075 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2076 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2077 return 0;
2078
2079 /* The CMPL_Q may come late, read from register and try again
2080 * note: if coalescing is enabled,
2081 * it will need to read from register every time for sure
2082 */
2083 if (unlikely(mvi->rx_cons == rx_prod_idx))
2084 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2085
2086 if (mvi->rx_cons == rx_prod_idx)
2087 return 0;
2088
2089 while (mvi->rx_cons != rx_prod_idx) {
2090 /* increment our internal RX consumer pointer */
2091 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2092 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2093
2094 if (likely(rx_desc & RXQ_DONE))
2095 mvs_slot_complete(mvi, rx_desc, 0);
2096 if (rx_desc & RXQ_ATTN) {
2097 attn = true;
2098 } else if (rx_desc & RXQ_ERR) {
2099 if (!(rx_desc & RXQ_DONE))
2100 mvs_slot_complete(mvi, rx_desc, 0);
2101 } else if (rx_desc & RXQ_SLOT_RESET) {
2102 mvs_slot_free(mvi, rx_desc);
2103 }
2104 }
2105
2106 if (attn && self_clear)
2107 MVS_CHIP_DISP->int_full(mvi);
2108 return 0;
2109}
2110
2111int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index,
2112 u8 reg_count, u8 *write_data)
2113{
2114 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
2115 struct mvs_info *mvi = mvs_prv->mvi[0];
2116
2117 if (MVS_CHIP_DISP->gpio_write) {
2118 return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type,
2119 reg_index, reg_count, write_data);
2120 }
2121
2122 return -ENOSYS;
2123}
Linux kernel - Deliverables
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