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[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / mvsas / mv_sas.c
1 /*
2 * Marvell 88SE64xx/88SE94xx main function
3 *
4 * Copyright 2007 Red Hat, Inc.
5 * Copyright 2008 Marvell. <kewei@marvell.com>
6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
7 *
8 * This file is licensed under GPLv2.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; version 2 of the
13 * License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 * USA
24 */
25
26 #include "mv_sas.h"
27
28 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
29 {
30 if (task->lldd_task) {
31 struct mvs_slot_info *slot;
32 slot = task->lldd_task;
33 *tag = slot->slot_tag;
34 return 1;
35 }
36 return 0;
37 }
38
39 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
40 {
41 void *bitmap = mvi->tags;
42 clear_bit(tag, bitmap);
43 }
44
45 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
46 {
47 mvs_tag_clear(mvi, tag);
48 }
49
50 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
51 {
52 void *bitmap = mvi->tags;
53 set_bit(tag, bitmap);
54 }
55
56 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
57 {
58 unsigned int index, tag;
59 void *bitmap = mvi->tags;
60
61 index = find_first_zero_bit(bitmap, mvi->tags_num);
62 tag = index;
63 if (tag >= mvi->tags_num)
64 return -SAS_QUEUE_FULL;
65 mvs_tag_set(mvi, tag);
66 *tag_out = tag;
67 return 0;
68 }
69
70 void mvs_tag_init(struct mvs_info *mvi)
71 {
72 int i;
73 for (i = 0; i < mvi->tags_num; ++i)
74 mvs_tag_clear(mvi, i);
75 }
76
77 struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
78 {
79 unsigned long i = 0, j = 0, hi = 0;
80 struct sas_ha_struct *sha = dev->port->ha;
81 struct mvs_info *mvi = NULL;
82 struct asd_sas_phy *phy;
83
84 while (sha->sas_port[i]) {
85 if (sha->sas_port[i] == dev->port) {
86 phy = container_of(sha->sas_port[i]->phy_list.next,
87 struct asd_sas_phy, port_phy_el);
88 j = 0;
89 while (sha->sas_phy[j]) {
90 if (sha->sas_phy[j] == phy)
91 break;
92 j++;
93 }
94 break;
95 }
96 i++;
97 }
98 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
99 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
100
101 return mvi;
102
103 }
104
105 int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
106 {
107 unsigned long i = 0, j = 0, n = 0, num = 0;
108 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
109 struct mvs_info *mvi = mvi_dev->mvi_info;
110 struct sas_ha_struct *sha = dev->port->ha;
111
112 while (sha->sas_port[i]) {
113 if (sha->sas_port[i] == dev->port) {
114 struct asd_sas_phy *phy;
115 list_for_each_entry(phy,
116 &sha->sas_port[i]->phy_list, port_phy_el) {
117 j = 0;
118 while (sha->sas_phy[j]) {
119 if (sha->sas_phy[j] == phy)
120 break;
121 j++;
122 }
123 phyno[n] = (j >= mvi->chip->n_phy) ?
124 (j - mvi->chip->n_phy) : j;
125 num++;
126 n++;
127 }
128 break;
129 }
130 i++;
131 }
132 return num;
133 }
134
135 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
136 u8 reg_set)
137 {
138 u32 dev_no;
139 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
140 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
141 continue;
142
143 if (mvi->devices[dev_no].taskfileset == reg_set)
144 return &mvi->devices[dev_no];
145 }
146 return NULL;
147 }
148
149 static inline void mvs_free_reg_set(struct mvs_info *mvi,
150 struct mvs_device *dev)
151 {
152 if (!dev) {
153 mv_printk("device has been free.\n");
154 return;
155 }
156 if (dev->taskfileset == MVS_ID_NOT_MAPPED)
157 return;
158 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
159 }
160
161 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
162 struct mvs_device *dev)
163 {
164 if (dev->taskfileset != MVS_ID_NOT_MAPPED)
165 return 0;
166 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
167 }
168
169 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
170 {
171 u32 no;
172 for_each_phy(phy_mask, phy_mask, no) {
173 if (!(phy_mask & 1))
174 continue;
175 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
176 }
177 }
178
179 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
180 void *funcdata)
181 {
182 int rc = 0, phy_id = sas_phy->id;
183 u32 tmp, i = 0, hi;
184 struct sas_ha_struct *sha = sas_phy->ha;
185 struct mvs_info *mvi = NULL;
186
187 while (sha->sas_phy[i]) {
188 if (sha->sas_phy[i] == sas_phy)
189 break;
190 i++;
191 }
192 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
193 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
194
195 switch (func) {
196 case PHY_FUNC_SET_LINK_RATE:
197 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
198 break;
199
200 case PHY_FUNC_HARD_RESET:
201 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
202 if (tmp & PHY_RST_HARD)
203 break;
204 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
205 break;
206
207 case PHY_FUNC_LINK_RESET:
208 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
209 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
210 break;
211
212 case PHY_FUNC_DISABLE:
213 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
214 break;
215 case PHY_FUNC_RELEASE_SPINUP_HOLD:
216 default:
217 rc = -ENOSYS;
218 }
219 msleep(200);
220 return rc;
221 }
222
223 void 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
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
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
285 void 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
303 int 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
315 static 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
417 err_out_2:
418 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
419 PCI_DMA_FROMDEVICE);
420 err_out:
421 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
422 PCI_DMA_TODEVICE);
423 return rc;
424 }
425
426 static 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 *tag = qc->tag;
434 return 1;
435 }
436 }
437
438 return 0;
439 }
440
441 static int mvs_task_prep_ata(struct mvs_info *mvi,
442 struct mvs_task_exec_info *tei)
443 {
444 struct sas_task *task = tei->task;
445 struct domain_device *dev = task->dev;
446 struct mvs_device *mvi_dev = dev->lldd_dev;
447 struct mvs_cmd_hdr *hdr = tei->hdr;
448 struct asd_sas_port *sas_port = dev->port;
449 struct mvs_slot_info *slot;
450 void *buf_prd;
451 u32 tag = tei->tag, hdr_tag;
452 u32 flags, del_q;
453 void *buf_tmp;
454 u8 *buf_cmd, *buf_oaf;
455 dma_addr_t buf_tmp_dma;
456 u32 i, req_len, resp_len;
457 const u32 max_resp_len = SB_RFB_MAX;
458
459 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
460 mv_dprintk("Have not enough regiset for dev %d.\n",
461 mvi_dev->device_id);
462 return -EBUSY;
463 }
464 slot = &mvi->slot_info[tag];
465 slot->tx = mvi->tx_prod;
466 del_q = TXQ_MODE_I | tag |
467 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
468 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
469 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
470 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
471
472 if (task->data_dir == DMA_FROM_DEVICE)
473 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
474 else
475 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
476
477 if (task->ata_task.use_ncq)
478 flags |= MCH_FPDMA;
479 if (dev->sata_dev.class == ATA_DEV_ATAPI) {
480 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
481 flags |= MCH_ATAPI;
482 }
483
484 hdr->flags = cpu_to_le32(flags);
485
486 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
487 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
488 else
489 hdr_tag = tag;
490
491 hdr->tags = cpu_to_le32(hdr_tag);
492
493 hdr->data_len = cpu_to_le32(task->total_xfer_len);
494
495 /*
496 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
497 */
498
499 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
500 buf_cmd = buf_tmp = slot->buf;
501 buf_tmp_dma = slot->buf_dma;
502
503 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
504
505 buf_tmp += MVS_ATA_CMD_SZ;
506 buf_tmp_dma += MVS_ATA_CMD_SZ;
507
508 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
509 /* used for STP. unused for SATA? */
510 buf_oaf = buf_tmp;
511 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
512
513 buf_tmp += MVS_OAF_SZ;
514 buf_tmp_dma += MVS_OAF_SZ;
515
516 /* region 3: PRD table ********************************************* */
517 buf_prd = buf_tmp;
518
519 if (tei->n_elem)
520 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
521 else
522 hdr->prd_tbl = 0;
523 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
524
525 buf_tmp += i;
526 buf_tmp_dma += i;
527
528 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
529 slot->response = buf_tmp;
530 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
531 if (mvi->flags & MVF_FLAG_SOC)
532 hdr->reserved[0] = 0;
533
534 req_len = sizeof(struct host_to_dev_fis);
535 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
536 sizeof(struct mvs_err_info) - i;
537
538 /* request, response lengths */
539 resp_len = min(resp_len, max_resp_len);
540 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
541
542 if (likely(!task->ata_task.device_control_reg_update))
543 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
544 /* fill in command FIS and ATAPI CDB */
545 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
546 if (dev->sata_dev.class == ATA_DEV_ATAPI)
547 memcpy(buf_cmd + STP_ATAPI_CMD,
548 task->ata_task.atapi_packet, 16);
549
550 /* generate open address frame hdr (first 12 bytes) */
551 /* initiator, STP, ftype 1h */
552 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
553 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
554 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
555 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
556
557 /* fill in PRD (scatter/gather) table, if any */
558 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
559
560 if (task->data_dir == DMA_FROM_DEVICE)
561 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
562 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
563
564 return 0;
565 }
566
567 static int mvs_task_prep_ssp(struct mvs_info *mvi,
568 struct mvs_task_exec_info *tei, int is_tmf,
569 struct mvs_tmf_task *tmf)
570 {
571 struct sas_task *task = tei->task;
572 struct mvs_cmd_hdr *hdr = tei->hdr;
573 struct mvs_port *port = tei->port;
574 struct domain_device *dev = task->dev;
575 struct mvs_device *mvi_dev = dev->lldd_dev;
576 struct asd_sas_port *sas_port = dev->port;
577 struct mvs_slot_info *slot;
578 void *buf_prd;
579 struct ssp_frame_hdr *ssp_hdr;
580 void *buf_tmp;
581 u8 *buf_cmd, *buf_oaf, fburst = 0;
582 dma_addr_t buf_tmp_dma;
583 u32 flags;
584 u32 resp_len, req_len, i, tag = tei->tag;
585 const u32 max_resp_len = SB_RFB_MAX;
586 u32 phy_mask;
587
588 slot = &mvi->slot_info[tag];
589
590 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
591 sas_port->phy_mask) & TXQ_PHY_MASK;
592
593 slot->tx = mvi->tx_prod;
594 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
595 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
596 (phy_mask << TXQ_PHY_SHIFT));
597
598 flags = MCH_RETRY;
599 if (task->ssp_task.enable_first_burst) {
600 flags |= MCH_FBURST;
601 fburst = (1 << 7);
602 }
603 if (is_tmf)
604 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
605 else
606 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
607
608 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
609 hdr->tags = cpu_to_le32(tag);
610 hdr->data_len = cpu_to_le32(task->total_xfer_len);
611
612 /*
613 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
614 */
615
616 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
617 buf_cmd = buf_tmp = slot->buf;
618 buf_tmp_dma = slot->buf_dma;
619
620 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
621
622 buf_tmp += MVS_SSP_CMD_SZ;
623 buf_tmp_dma += MVS_SSP_CMD_SZ;
624
625 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
626 buf_oaf = buf_tmp;
627 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
628
629 buf_tmp += MVS_OAF_SZ;
630 buf_tmp_dma += MVS_OAF_SZ;
631
632 /* region 3: PRD table ********************************************* */
633 buf_prd = buf_tmp;
634 if (tei->n_elem)
635 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
636 else
637 hdr->prd_tbl = 0;
638
639 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
640 buf_tmp += i;
641 buf_tmp_dma += i;
642
643 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
644 slot->response = buf_tmp;
645 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
646 if (mvi->flags & MVF_FLAG_SOC)
647 hdr->reserved[0] = 0;
648
649 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
650 sizeof(struct mvs_err_info) - i;
651 resp_len = min(resp_len, max_resp_len);
652
653 req_len = sizeof(struct ssp_frame_hdr) + 28;
654
655 /* request, response lengths */
656 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
657
658 /* generate open address frame hdr (first 12 bytes) */
659 /* initiator, SSP, ftype 1h */
660 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
661 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
662 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
663 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
664
665 /* fill in SSP frame header (Command Table.SSP frame header) */
666 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
667
668 if (is_tmf)
669 ssp_hdr->frame_type = SSP_TASK;
670 else
671 ssp_hdr->frame_type = SSP_COMMAND;
672
673 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
674 HASHED_SAS_ADDR_SIZE);
675 memcpy(ssp_hdr->hashed_src_addr,
676 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
677 ssp_hdr->tag = cpu_to_be16(tag);
678
679 /* fill in IU for TASK and Command Frame */
680 buf_cmd += sizeof(*ssp_hdr);
681 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
682
683 if (ssp_hdr->frame_type != SSP_TASK) {
684 buf_cmd[9] = fburst | task->ssp_task.task_attr |
685 (task->ssp_task.task_prio << 3);
686 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
687 task->ssp_task.cmd->cmd_len);
688 } else{
689 buf_cmd[10] = tmf->tmf;
690 switch (tmf->tmf) {
691 case TMF_ABORT_TASK:
692 case TMF_QUERY_TASK:
693 buf_cmd[12] =
694 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
695 buf_cmd[13] =
696 tmf->tag_of_task_to_be_managed & 0xff;
697 break;
698 default:
699 break;
700 }
701 }
702 /* fill in PRD (scatter/gather) table, if any */
703 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
704 return 0;
705 }
706
707 #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
708 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
709 struct mvs_tmf_task *tmf, int *pass)
710 {
711 struct domain_device *dev = task->dev;
712 struct mvs_device *mvi_dev = dev->lldd_dev;
713 struct mvs_task_exec_info tei;
714 struct mvs_slot_info *slot;
715 u32 tag = 0xdeadbeef, n_elem = 0;
716 int rc = 0;
717
718 if (!dev->port) {
719 struct task_status_struct *tsm = &task->task_status;
720
721 tsm->resp = SAS_TASK_UNDELIVERED;
722 tsm->stat = SAS_PHY_DOWN;
723 /*
724 * libsas will use dev->port, should
725 * not call task_done for sata
726 */
727 if (dev->dev_type != SAS_SATA_DEV)
728 task->task_done(task);
729 return rc;
730 }
731
732 if (DEV_IS_GONE(mvi_dev)) {
733 if (mvi_dev)
734 mv_dprintk("device %d not ready.\n",
735 mvi_dev->device_id);
736 else
737 mv_dprintk("device %016llx not ready.\n",
738 SAS_ADDR(dev->sas_addr));
739
740 rc = SAS_PHY_DOWN;
741 return rc;
742 }
743 tei.port = dev->port->lldd_port;
744 if (tei.port && !tei.port->port_attached && !tmf) {
745 if (sas_protocol_ata(task->task_proto)) {
746 struct task_status_struct *ts = &task->task_status;
747 mv_dprintk("SATA/STP port %d does not attach"
748 "device.\n", dev->port->id);
749 ts->resp = SAS_TASK_COMPLETE;
750 ts->stat = SAS_PHY_DOWN;
751
752 task->task_done(task);
753
754 } else {
755 struct task_status_struct *ts = &task->task_status;
756 mv_dprintk("SAS port %d does not attach"
757 "device.\n", dev->port->id);
758 ts->resp = SAS_TASK_UNDELIVERED;
759 ts->stat = SAS_PHY_DOWN;
760 task->task_done(task);
761 }
762 return rc;
763 }
764
765 if (!sas_protocol_ata(task->task_proto)) {
766 if (task->num_scatter) {
767 n_elem = dma_map_sg(mvi->dev,
768 task->scatter,
769 task->num_scatter,
770 task->data_dir);
771 if (!n_elem) {
772 rc = -ENOMEM;
773 goto prep_out;
774 }
775 }
776 } else {
777 n_elem = task->num_scatter;
778 }
779
780 rc = mvs_tag_alloc(mvi, &tag);
781 if (rc)
782 goto err_out;
783
784 slot = &mvi->slot_info[tag];
785
786 task->lldd_task = NULL;
787 slot->n_elem = n_elem;
788 slot->slot_tag = tag;
789
790 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
791 if (!slot->buf)
792 goto err_out_tag;
793 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
794
795 tei.task = task;
796 tei.hdr = &mvi->slot[tag];
797 tei.tag = tag;
798 tei.n_elem = n_elem;
799 switch (task->task_proto) {
800 case SAS_PROTOCOL_SMP:
801 rc = mvs_task_prep_smp(mvi, &tei);
802 break;
803 case SAS_PROTOCOL_SSP:
804 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
805 break;
806 case SAS_PROTOCOL_SATA:
807 case SAS_PROTOCOL_STP:
808 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
809 rc = mvs_task_prep_ata(mvi, &tei);
810 break;
811 default:
812 dev_printk(KERN_ERR, mvi->dev,
813 "unknown sas_task proto: 0x%x\n",
814 task->task_proto);
815 rc = -EINVAL;
816 break;
817 }
818
819 if (rc) {
820 mv_dprintk("rc is %x\n", rc);
821 goto err_out_slot_buf;
822 }
823 slot->task = task;
824 slot->port = tei.port;
825 task->lldd_task = slot;
826 list_add_tail(&slot->entry, &tei.port->list);
827 spin_lock(&task->task_state_lock);
828 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
829 spin_unlock(&task->task_state_lock);
830
831 mvi_dev->running_req++;
832 ++(*pass);
833 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
834
835 return rc;
836
837 err_out_slot_buf:
838 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
839 err_out_tag:
840 mvs_tag_free(mvi, tag);
841 err_out:
842
843 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
844 if (!sas_protocol_ata(task->task_proto))
845 if (n_elem)
846 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
847 task->data_dir);
848 prep_out:
849 return rc;
850 }
851
852 static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
853 struct completion *completion, int is_tmf,
854 struct mvs_tmf_task *tmf)
855 {
856 struct mvs_info *mvi = NULL;
857 u32 rc = 0;
858 u32 pass = 0;
859 unsigned long flags = 0;
860
861 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
862
863 spin_lock_irqsave(&mvi->lock, flags);
864 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
865 if (rc)
866 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
867
868 if (likely(pass))
869 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
870 (MVS_CHIP_SLOT_SZ - 1));
871 spin_unlock_irqrestore(&mvi->lock, flags);
872
873 return rc;
874 }
875
876 int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
877 {
878 return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
879 }
880
881 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
882 {
883 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
884 mvs_tag_clear(mvi, slot_idx);
885 }
886
887 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
888 struct mvs_slot_info *slot, u32 slot_idx)
889 {
890 if (!slot)
891 return;
892 if (!slot->task)
893 return;
894 if (!sas_protocol_ata(task->task_proto))
895 if (slot->n_elem)
896 dma_unmap_sg(mvi->dev, task->scatter,
897 slot->n_elem, task->data_dir);
898
899 switch (task->task_proto) {
900 case SAS_PROTOCOL_SMP:
901 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
902 PCI_DMA_FROMDEVICE);
903 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
904 PCI_DMA_TODEVICE);
905 break;
906
907 case SAS_PROTOCOL_SATA:
908 case SAS_PROTOCOL_STP:
909 case SAS_PROTOCOL_SSP:
910 default:
911 /* do nothing */
912 break;
913 }
914
915 if (slot->buf) {
916 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
917 slot->buf = NULL;
918 }
919 list_del_init(&slot->entry);
920 task->lldd_task = NULL;
921 slot->task = NULL;
922 slot->port = NULL;
923 slot->slot_tag = 0xFFFFFFFF;
924 mvs_slot_free(mvi, slot_idx);
925 }
926
927 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
928 {
929 struct mvs_phy *phy = &mvi->phy[phy_no];
930 struct mvs_port *port = phy->port;
931 int j, no;
932
933 for_each_phy(port->wide_port_phymap, j, no) {
934 if (j & 1) {
935 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
936 PHYR_WIDE_PORT);
937 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
938 port->wide_port_phymap);
939 } else {
940 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
941 PHYR_WIDE_PORT);
942 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
943 0);
944 }
945 }
946 }
947
948 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
949 {
950 u32 tmp;
951 struct mvs_phy *phy = &mvi->phy[i];
952 struct mvs_port *port = phy->port;
953
954 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
955 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
956 if (!port)
957 phy->phy_attached = 1;
958 return tmp;
959 }
960
961 if (port) {
962 if (phy->phy_type & PORT_TYPE_SAS) {
963 port->wide_port_phymap &= ~(1U << i);
964 if (!port->wide_port_phymap)
965 port->port_attached = 0;
966 mvs_update_wideport(mvi, i);
967 } else if (phy->phy_type & PORT_TYPE_SATA)
968 port->port_attached = 0;
969 phy->port = NULL;
970 phy->phy_attached = 0;
971 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
972 }
973 return 0;
974 }
975
976 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
977 {
978 u32 *s = (u32 *) buf;
979
980 if (!s)
981 return NULL;
982
983 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
984 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
985
986 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
987 s[2] = 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_SIG1);
990 s[1] = 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_SIG0);
993 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
994
995 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
996 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
997
998 return s;
999 }
1000
1001 static u32 mvs_is_sig_fis_received(u32 irq_status)
1002 {
1003 return irq_status & PHYEV_SIG_FIS;
1004 }
1005
1006 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1007 {
1008 if (phy->timer.function)
1009 del_timer(&phy->timer);
1010 phy->timer.function = NULL;
1011 }
1012
1013 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1014 {
1015 struct mvs_phy *phy = &mvi->phy[i];
1016 struct sas_identify_frame *id;
1017
1018 id = (struct sas_identify_frame *)phy->frame_rcvd;
1019
1020 if (get_st) {
1021 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1022 phy->phy_status = mvs_is_phy_ready(mvi, i);
1023 }
1024
1025 if (phy->phy_status) {
1026 int oob_done = 0;
1027 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1028
1029 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1030
1031 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1032 if (phy->phy_type & PORT_TYPE_SATA) {
1033 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1034 if (mvs_is_sig_fis_received(phy->irq_status)) {
1035 mvs_sig_remove_timer(phy);
1036 phy->phy_attached = 1;
1037 phy->att_dev_sas_addr =
1038 i + mvi->id * mvi->chip->n_phy;
1039 if (oob_done)
1040 sas_phy->oob_mode = SATA_OOB_MODE;
1041 phy->frame_rcvd_size =
1042 sizeof(struct dev_to_host_fis);
1043 mvs_get_d2h_reg(mvi, i, id);
1044 } else {
1045 u32 tmp;
1046 dev_printk(KERN_DEBUG, mvi->dev,
1047 "Phy%d : No sig fis\n", i);
1048 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1049 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1050 tmp | PHYEV_SIG_FIS);
1051 phy->phy_attached = 0;
1052 phy->phy_type &= ~PORT_TYPE_SATA;
1053 goto out_done;
1054 }
1055 } else if (phy->phy_type & PORT_TYPE_SAS
1056 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1057 phy->phy_attached = 1;
1058 phy->identify.device_type =
1059 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1060
1061 if (phy->identify.device_type == SAS_END_DEVICE)
1062 phy->identify.target_port_protocols =
1063 SAS_PROTOCOL_SSP;
1064 else if (phy->identify.device_type != SAS_PHY_UNUSED)
1065 phy->identify.target_port_protocols =
1066 SAS_PROTOCOL_SMP;
1067 if (oob_done)
1068 sas_phy->oob_mode = SAS_OOB_MODE;
1069 phy->frame_rcvd_size =
1070 sizeof(struct sas_identify_frame);
1071 }
1072 memcpy(sas_phy->attached_sas_addr,
1073 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1074
1075 if (MVS_CHIP_DISP->phy_work_around)
1076 MVS_CHIP_DISP->phy_work_around(mvi, i);
1077 }
1078 mv_dprintk("phy %d attach dev info is %x\n",
1079 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1080 mv_dprintk("phy %d attach sas addr is %llx\n",
1081 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1082 out_done:
1083 if (get_st)
1084 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1085 }
1086
1087 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1088 {
1089 struct sas_ha_struct *sas_ha = sas_phy->ha;
1090 struct mvs_info *mvi = NULL; int i = 0, hi;
1091 struct mvs_phy *phy = sas_phy->lldd_phy;
1092 struct asd_sas_port *sas_port = sas_phy->port;
1093 struct mvs_port *port;
1094 unsigned long flags = 0;
1095 if (!sas_port)
1096 return;
1097
1098 while (sas_ha->sas_phy[i]) {
1099 if (sas_ha->sas_phy[i] == sas_phy)
1100 break;
1101 i++;
1102 }
1103 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1104 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1105 if (i >= mvi->chip->n_phy)
1106 port = &mvi->port[i - mvi->chip->n_phy];
1107 else
1108 port = &mvi->port[i];
1109 if (lock)
1110 spin_lock_irqsave(&mvi->lock, flags);
1111 port->port_attached = 1;
1112 phy->port = port;
1113 sas_port->lldd_port = port;
1114 if (phy->phy_type & PORT_TYPE_SAS) {
1115 port->wide_port_phymap = sas_port->phy_mask;
1116 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1117 mvs_update_wideport(mvi, sas_phy->id);
1118
1119 /* direct attached SAS device */
1120 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1121 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1122 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1123 }
1124 }
1125 if (lock)
1126 spin_unlock_irqrestore(&mvi->lock, flags);
1127 }
1128
1129 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1130 {
1131 struct domain_device *dev;
1132 struct mvs_phy *phy = sas_phy->lldd_phy;
1133 struct mvs_info *mvi = phy->mvi;
1134 struct asd_sas_port *port = sas_phy->port;
1135 int phy_no = 0;
1136
1137 while (phy != &mvi->phy[phy_no]) {
1138 phy_no++;
1139 if (phy_no >= MVS_MAX_PHYS)
1140 return;
1141 }
1142 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1143 mvs_do_release_task(phy->mvi, phy_no, dev);
1144
1145 }
1146
1147
1148 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1149 {
1150 mvs_port_notify_formed(sas_phy, 1);
1151 }
1152
1153 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1154 {
1155 mvs_port_notify_deformed(sas_phy, 1);
1156 }
1157
1158 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1159 {
1160 u32 dev;
1161 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1162 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1163 mvi->devices[dev].device_id = dev;
1164 return &mvi->devices[dev];
1165 }
1166 }
1167
1168 if (dev == MVS_MAX_DEVICES)
1169 mv_printk("max support %d devices, ignore ..\n",
1170 MVS_MAX_DEVICES);
1171
1172 return NULL;
1173 }
1174
1175 void mvs_free_dev(struct mvs_device *mvi_dev)
1176 {
1177 u32 id = mvi_dev->device_id;
1178 memset(mvi_dev, 0, sizeof(*mvi_dev));
1179 mvi_dev->device_id = id;
1180 mvi_dev->dev_type = SAS_PHY_UNUSED;
1181 mvi_dev->dev_status = MVS_DEV_NORMAL;
1182 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1183 }
1184
1185 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1186 {
1187 unsigned long flags = 0;
1188 int res = 0;
1189 struct mvs_info *mvi = NULL;
1190 struct domain_device *parent_dev = dev->parent;
1191 struct mvs_device *mvi_device;
1192
1193 mvi = mvs_find_dev_mvi(dev);
1194
1195 if (lock)
1196 spin_lock_irqsave(&mvi->lock, flags);
1197
1198 mvi_device = mvs_alloc_dev(mvi);
1199 if (!mvi_device) {
1200 res = -1;
1201 goto found_out;
1202 }
1203 dev->lldd_dev = mvi_device;
1204 mvi_device->dev_status = MVS_DEV_NORMAL;
1205 mvi_device->dev_type = dev->dev_type;
1206 mvi_device->mvi_info = mvi;
1207 mvi_device->sas_device = dev;
1208 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1209 int phy_id;
1210 u8 phy_num = parent_dev->ex_dev.num_phys;
1211 struct ex_phy *phy;
1212 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1213 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1214 if (SAS_ADDR(phy->attached_sas_addr) ==
1215 SAS_ADDR(dev->sas_addr)) {
1216 mvi_device->attached_phy = phy_id;
1217 break;
1218 }
1219 }
1220
1221 if (phy_id == phy_num) {
1222 mv_printk("Error: no attached dev:%016llx"
1223 "at ex:%016llx.\n",
1224 SAS_ADDR(dev->sas_addr),
1225 SAS_ADDR(parent_dev->sas_addr));
1226 res = -1;
1227 }
1228 }
1229
1230 found_out:
1231 if (lock)
1232 spin_unlock_irqrestore(&mvi->lock, flags);
1233 return res;
1234 }
1235
1236 int mvs_dev_found(struct domain_device *dev)
1237 {
1238 return mvs_dev_found_notify(dev, 1);
1239 }
1240
1241 void mvs_dev_gone_notify(struct domain_device *dev)
1242 {
1243 unsigned long flags = 0;
1244 struct mvs_device *mvi_dev = dev->lldd_dev;
1245 struct mvs_info *mvi;
1246
1247 if (!mvi_dev) {
1248 mv_dprintk("found dev has gone.\n");
1249 return;
1250 }
1251
1252 mvi = mvi_dev->mvi_info;
1253
1254 spin_lock_irqsave(&mvi->lock, flags);
1255
1256 mv_dprintk("found dev[%d:%x] is gone.\n",
1257 mvi_dev->device_id, mvi_dev->dev_type);
1258 mvs_release_task(mvi, dev);
1259 mvs_free_reg_set(mvi, mvi_dev);
1260 mvs_free_dev(mvi_dev);
1261
1262 dev->lldd_dev = NULL;
1263 mvi_dev->sas_device = NULL;
1264
1265 spin_unlock_irqrestore(&mvi->lock, flags);
1266 }
1267
1268
1269 void mvs_dev_gone(struct domain_device *dev)
1270 {
1271 mvs_dev_gone_notify(dev);
1272 }
1273
1274 static void mvs_task_done(struct sas_task *task)
1275 {
1276 if (!del_timer(&task->slow_task->timer))
1277 return;
1278 complete(&task->slow_task->completion);
1279 }
1280
1281 static void mvs_tmf_timedout(unsigned long data)
1282 {
1283 struct sas_task *task = (struct sas_task *)data;
1284
1285 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1286 complete(&task->slow_task->completion);
1287 }
1288
1289 #define MVS_TASK_TIMEOUT 20
1290 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1291 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1292 {
1293 int res, retry;
1294 struct sas_task *task = NULL;
1295
1296 for (retry = 0; retry < 3; retry++) {
1297 task = sas_alloc_slow_task(GFP_KERNEL);
1298 if (!task)
1299 return -ENOMEM;
1300
1301 task->dev = dev;
1302 task->task_proto = dev->tproto;
1303
1304 memcpy(&task->ssp_task, parameter, para_len);
1305 task->task_done = mvs_task_done;
1306
1307 task->slow_task->timer.data = (unsigned long) task;
1308 task->slow_task->timer.function = mvs_tmf_timedout;
1309 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1310 add_timer(&task->slow_task->timer);
1311
1312 res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
1313
1314 if (res) {
1315 del_timer(&task->slow_task->timer);
1316 mv_printk("executing internal task failed:%d\n", res);
1317 goto ex_err;
1318 }
1319
1320 wait_for_completion(&task->slow_task->completion);
1321 res = TMF_RESP_FUNC_FAILED;
1322 /* Even TMF timed out, return direct. */
1323 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1324 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1325 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1326 goto ex_err;
1327 }
1328 }
1329
1330 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1331 task->task_status.stat == SAM_STAT_GOOD) {
1332 res = TMF_RESP_FUNC_COMPLETE;
1333 break;
1334 }
1335
1336 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1337 task->task_status.stat == SAS_DATA_UNDERRUN) {
1338 /* no error, but return the number of bytes of
1339 * underrun */
1340 res = task->task_status.residual;
1341 break;
1342 }
1343
1344 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1345 task->task_status.stat == SAS_DATA_OVERRUN) {
1346 mv_dprintk("blocked task error.\n");
1347 res = -EMSGSIZE;
1348 break;
1349 } else {
1350 mv_dprintk(" task to dev %016llx response: 0x%x "
1351 "status 0x%x\n",
1352 SAS_ADDR(dev->sas_addr),
1353 task->task_status.resp,
1354 task->task_status.stat);
1355 sas_free_task(task);
1356 task = NULL;
1357
1358 }
1359 }
1360 ex_err:
1361 BUG_ON(retry == 3 && task != NULL);
1362 sas_free_task(task);
1363 return res;
1364 }
1365
1366 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1367 u8 *lun, struct mvs_tmf_task *tmf)
1368 {
1369 struct sas_ssp_task ssp_task;
1370 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1371 return TMF_RESP_FUNC_ESUPP;
1372
1373 memcpy(ssp_task.LUN, lun, 8);
1374
1375 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1376 sizeof(ssp_task), tmf);
1377 }
1378
1379
1380 /* Standard mandates link reset for ATA (type 0)
1381 and hard reset for SSP (type 1) , only for RECOVERY */
1382 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1383 {
1384 int rc;
1385 struct sas_phy *phy = sas_get_local_phy(dev);
1386 int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1387 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1388 rc = sas_phy_reset(phy, reset_type);
1389 sas_put_local_phy(phy);
1390 msleep(2000);
1391 return rc;
1392 }
1393
1394 /* mandatory SAM-3 */
1395 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1396 {
1397 unsigned long flags;
1398 int rc = TMF_RESP_FUNC_FAILED;
1399 struct mvs_tmf_task tmf_task;
1400 struct mvs_device * mvi_dev = dev->lldd_dev;
1401 struct mvs_info *mvi = mvi_dev->mvi_info;
1402
1403 tmf_task.tmf = TMF_LU_RESET;
1404 mvi_dev->dev_status = MVS_DEV_EH;
1405 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1406 if (rc == TMF_RESP_FUNC_COMPLETE) {
1407 spin_lock_irqsave(&mvi->lock, flags);
1408 mvs_release_task(mvi, dev);
1409 spin_unlock_irqrestore(&mvi->lock, flags);
1410 }
1411 /* If failed, fall-through I_T_Nexus reset */
1412 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1413 mvi_dev->device_id, rc);
1414 return rc;
1415 }
1416
1417 int mvs_I_T_nexus_reset(struct domain_device *dev)
1418 {
1419 unsigned long flags;
1420 int rc = TMF_RESP_FUNC_FAILED;
1421 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1422 struct mvs_info *mvi = mvi_dev->mvi_info;
1423
1424 if (mvi_dev->dev_status != MVS_DEV_EH)
1425 return TMF_RESP_FUNC_COMPLETE;
1426 else
1427 mvi_dev->dev_status = MVS_DEV_NORMAL;
1428 rc = mvs_debug_I_T_nexus_reset(dev);
1429 mv_printk("%s for device[%x]:rc= %d\n",
1430 __func__, mvi_dev->device_id, rc);
1431
1432 spin_lock_irqsave(&mvi->lock, flags);
1433 mvs_release_task(mvi, dev);
1434 spin_unlock_irqrestore(&mvi->lock, flags);
1435
1436 return rc;
1437 }
1438 /* optional SAM-3 */
1439 int mvs_query_task(struct sas_task *task)
1440 {
1441 u32 tag;
1442 struct scsi_lun lun;
1443 struct mvs_tmf_task tmf_task;
1444 int rc = TMF_RESP_FUNC_FAILED;
1445
1446 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1447 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1448 struct domain_device *dev = task->dev;
1449 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1450 struct mvs_info *mvi = mvi_dev->mvi_info;
1451
1452 int_to_scsilun(cmnd->device->lun, &lun);
1453 rc = mvs_find_tag(mvi, task, &tag);
1454 if (rc == 0) {
1455 rc = TMF_RESP_FUNC_FAILED;
1456 return rc;
1457 }
1458
1459 tmf_task.tmf = TMF_QUERY_TASK;
1460 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1461
1462 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1463 switch (rc) {
1464 /* The task is still in Lun, release it then */
1465 case TMF_RESP_FUNC_SUCC:
1466 /* The task is not in Lun or failed, reset the phy */
1467 case TMF_RESP_FUNC_FAILED:
1468 case TMF_RESP_FUNC_COMPLETE:
1469 break;
1470 }
1471 }
1472 mv_printk("%s:rc= %d\n", __func__, rc);
1473 return rc;
1474 }
1475
1476 /* mandatory SAM-3, still need free task/slot info */
1477 int mvs_abort_task(struct sas_task *task)
1478 {
1479 struct scsi_lun lun;
1480 struct mvs_tmf_task tmf_task;
1481 struct domain_device *dev = task->dev;
1482 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1483 struct mvs_info *mvi;
1484 int rc = TMF_RESP_FUNC_FAILED;
1485 unsigned long flags;
1486 u32 tag;
1487
1488 if (!mvi_dev) {
1489 mv_printk("Device has removed\n");
1490 return TMF_RESP_FUNC_FAILED;
1491 }
1492
1493 mvi = mvi_dev->mvi_info;
1494
1495 spin_lock_irqsave(&task->task_state_lock, flags);
1496 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1497 spin_unlock_irqrestore(&task->task_state_lock, flags);
1498 rc = TMF_RESP_FUNC_COMPLETE;
1499 goto out;
1500 }
1501 spin_unlock_irqrestore(&task->task_state_lock, flags);
1502 mvi_dev->dev_status = MVS_DEV_EH;
1503 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1504 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1505
1506 int_to_scsilun(cmnd->device->lun, &lun);
1507 rc = mvs_find_tag(mvi, task, &tag);
1508 if (rc == 0) {
1509 mv_printk("No such tag in %s\n", __func__);
1510 rc = TMF_RESP_FUNC_FAILED;
1511 return rc;
1512 }
1513
1514 tmf_task.tmf = TMF_ABORT_TASK;
1515 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1516
1517 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1518
1519 /* if successful, clear the task and callback forwards.*/
1520 if (rc == TMF_RESP_FUNC_COMPLETE) {
1521 u32 slot_no;
1522 struct mvs_slot_info *slot;
1523
1524 if (task->lldd_task) {
1525 slot = task->lldd_task;
1526 slot_no = (u32) (slot - mvi->slot_info);
1527 spin_lock_irqsave(&mvi->lock, flags);
1528 mvs_slot_complete(mvi, slot_no, 1);
1529 spin_unlock_irqrestore(&mvi->lock, flags);
1530 }
1531 }
1532
1533 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1534 task->task_proto & SAS_PROTOCOL_STP) {
1535 if (SAS_SATA_DEV == dev->dev_type) {
1536 struct mvs_slot_info *slot = task->lldd_task;
1537 u32 slot_idx = (u32)(slot - mvi->slot_info);
1538 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1539 "slot=%p slot_idx=x%x\n",
1540 mvi, task, slot, slot_idx);
1541 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1542 mvs_slot_task_free(mvi, task, slot, slot_idx);
1543 rc = TMF_RESP_FUNC_COMPLETE;
1544 goto out;
1545 }
1546
1547 }
1548 out:
1549 if (rc != TMF_RESP_FUNC_COMPLETE)
1550 mv_printk("%s:rc= %d\n", __func__, rc);
1551 return rc;
1552 }
1553
1554 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1555 {
1556 int rc = TMF_RESP_FUNC_FAILED;
1557 struct mvs_tmf_task tmf_task;
1558
1559 tmf_task.tmf = TMF_ABORT_TASK_SET;
1560 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1561
1562 return rc;
1563 }
1564
1565 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1566 {
1567 int rc = TMF_RESP_FUNC_FAILED;
1568 struct mvs_tmf_task tmf_task;
1569
1570 tmf_task.tmf = TMF_CLEAR_ACA;
1571 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1572
1573 return rc;
1574 }
1575
1576 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1577 {
1578 int rc = TMF_RESP_FUNC_FAILED;
1579 struct mvs_tmf_task tmf_task;
1580
1581 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1582 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1583
1584 return rc;
1585 }
1586
1587 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1588 u32 slot_idx, int err)
1589 {
1590 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1591 struct task_status_struct *tstat = &task->task_status;
1592 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1593 int stat = SAM_STAT_GOOD;
1594
1595
1596 resp->frame_len = sizeof(struct dev_to_host_fis);
1597 memcpy(&resp->ending_fis[0],
1598 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1599 sizeof(struct dev_to_host_fis));
1600 tstat->buf_valid_size = sizeof(*resp);
1601 if (unlikely(err)) {
1602 if (unlikely(err & CMD_ISS_STPD))
1603 stat = SAS_OPEN_REJECT;
1604 else
1605 stat = SAS_PROTO_RESPONSE;
1606 }
1607
1608 return stat;
1609 }
1610
1611 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1612 int key, int asc, int ascq)
1613 {
1614 memset(buffer, 0, len);
1615
1616 if (d_sense) {
1617 /* Descriptor format */
1618 if (len < 4) {
1619 mv_printk("Length %d of sense buffer too small to "
1620 "fit sense %x:%x:%x", len, key, asc, ascq);
1621 }
1622
1623 buffer[0] = 0x72; /* Response Code */
1624 if (len > 1)
1625 buffer[1] = key; /* Sense Key */
1626 if (len > 2)
1627 buffer[2] = asc; /* ASC */
1628 if (len > 3)
1629 buffer[3] = ascq; /* ASCQ */
1630 } else {
1631 if (len < 14) {
1632 mv_printk("Length %d of sense buffer too small to "
1633 "fit sense %x:%x:%x", len, key, asc, ascq);
1634 }
1635
1636 buffer[0] = 0x70; /* Response Code */
1637 if (len > 2)
1638 buffer[2] = key; /* Sense Key */
1639 if (len > 7)
1640 buffer[7] = 0x0a; /* Additional Sense Length */
1641 if (len > 12)
1642 buffer[12] = asc; /* ASC */
1643 if (len > 13)
1644 buffer[13] = ascq; /* ASCQ */
1645 }
1646
1647 return;
1648 }
1649
1650 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1651 u8 key, u8 asc, u8 asc_q)
1652 {
1653 iu->datapres = 2;
1654 iu->response_data_len = 0;
1655 iu->sense_data_len = 17;
1656 iu->status = 02;
1657 mvs_set_sense(iu->sense_data, 17, 0,
1658 key, asc, asc_q);
1659 }
1660
1661 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1662 u32 slot_idx)
1663 {
1664 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1665 int stat;
1666 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1667 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1668 u32 tfs = 0;
1669 enum mvs_port_type type = PORT_TYPE_SAS;
1670
1671 if (err_dw0 & CMD_ISS_STPD)
1672 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1673
1674 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1675
1676 stat = SAM_STAT_CHECK_CONDITION;
1677 switch (task->task_proto) {
1678 case SAS_PROTOCOL_SSP:
1679 {
1680 stat = SAS_ABORTED_TASK;
1681 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1682 struct ssp_response_iu *iu = slot->response +
1683 sizeof(struct mvs_err_info);
1684 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1685 sas_ssp_task_response(mvi->dev, task, iu);
1686 stat = SAM_STAT_CHECK_CONDITION;
1687 }
1688 if (err_dw1 & bit(31))
1689 mv_printk("reuse same slot, retry command.\n");
1690 break;
1691 }
1692 case SAS_PROTOCOL_SMP:
1693 stat = SAM_STAT_CHECK_CONDITION;
1694 break;
1695
1696 case SAS_PROTOCOL_SATA:
1697 case SAS_PROTOCOL_STP:
1698 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1699 {
1700 task->ata_task.use_ncq = 0;
1701 stat = SAS_PROTO_RESPONSE;
1702 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1703 }
1704 break;
1705 default:
1706 break;
1707 }
1708
1709 return stat;
1710 }
1711
1712 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1713 {
1714 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1715 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1716 struct sas_task *task = slot->task;
1717 struct mvs_device *mvi_dev = NULL;
1718 struct task_status_struct *tstat;
1719 struct domain_device *dev;
1720 u32 aborted;
1721
1722 void *to;
1723 enum exec_status sts;
1724
1725 if (unlikely(!task || !task->lldd_task || !task->dev))
1726 return -1;
1727
1728 tstat = &task->task_status;
1729 dev = task->dev;
1730 mvi_dev = dev->lldd_dev;
1731
1732 spin_lock(&task->task_state_lock);
1733 task->task_state_flags &=
1734 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1735 task->task_state_flags |= SAS_TASK_STATE_DONE;
1736 /* race condition*/
1737 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1738 spin_unlock(&task->task_state_lock);
1739
1740 memset(tstat, 0, sizeof(*tstat));
1741 tstat->resp = SAS_TASK_COMPLETE;
1742
1743 if (unlikely(aborted)) {
1744 tstat->stat = SAS_ABORTED_TASK;
1745 if (mvi_dev && mvi_dev->running_req)
1746 mvi_dev->running_req--;
1747 if (sas_protocol_ata(task->task_proto))
1748 mvs_free_reg_set(mvi, mvi_dev);
1749
1750 mvs_slot_task_free(mvi, task, slot, slot_idx);
1751 return -1;
1752 }
1753
1754 /* when no device attaching, go ahead and complete by error handling*/
1755 if (unlikely(!mvi_dev || flags)) {
1756 if (!mvi_dev)
1757 mv_dprintk("port has not device.\n");
1758 tstat->stat = SAS_PHY_DOWN;
1759 goto out;
1760 }
1761
1762 /*
1763 * error info record present; slot->response is 32 bit aligned but may
1764 * not be 64 bit aligned, so check for zero in two 32 bit reads
1765 */
1766 if (unlikely((rx_desc & RXQ_ERR)
1767 && (*((u32 *)slot->response)
1768 || *(((u32 *)slot->response) + 1)))) {
1769 mv_dprintk("port %d slot %d rx_desc %X has error info"
1770 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1771 rx_desc, get_unaligned_le64(slot->response));
1772 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1773 tstat->resp = SAS_TASK_COMPLETE;
1774 goto out;
1775 }
1776
1777 switch (task->task_proto) {
1778 case SAS_PROTOCOL_SSP:
1779 /* hw says status == 0, datapres == 0 */
1780 if (rx_desc & RXQ_GOOD) {
1781 tstat->stat = SAM_STAT_GOOD;
1782 tstat->resp = SAS_TASK_COMPLETE;
1783 }
1784 /* response frame present */
1785 else if (rx_desc & RXQ_RSP) {
1786 struct ssp_response_iu *iu = slot->response +
1787 sizeof(struct mvs_err_info);
1788 sas_ssp_task_response(mvi->dev, task, iu);
1789 } else
1790 tstat->stat = SAM_STAT_CHECK_CONDITION;
1791 break;
1792
1793 case SAS_PROTOCOL_SMP: {
1794 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1795 tstat->stat = SAM_STAT_GOOD;
1796 to = kmap_atomic(sg_page(sg_resp));
1797 memcpy(to + sg_resp->offset,
1798 slot->response + sizeof(struct mvs_err_info),
1799 sg_dma_len(sg_resp));
1800 kunmap_atomic(to);
1801 break;
1802 }
1803
1804 case SAS_PROTOCOL_SATA:
1805 case SAS_PROTOCOL_STP:
1806 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1807 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1808 break;
1809 }
1810
1811 default:
1812 tstat->stat = SAM_STAT_CHECK_CONDITION;
1813 break;
1814 }
1815 if (!slot->port->port_attached) {
1816 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1817 tstat->stat = SAS_PHY_DOWN;
1818 }
1819
1820
1821 out:
1822 if (mvi_dev && mvi_dev->running_req) {
1823 mvi_dev->running_req--;
1824 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1825 mvs_free_reg_set(mvi, mvi_dev);
1826 }
1827 mvs_slot_task_free(mvi, task, slot, slot_idx);
1828 sts = tstat->stat;
1829
1830 spin_unlock(&mvi->lock);
1831 if (task->task_done)
1832 task->task_done(task);
1833
1834 spin_lock(&mvi->lock);
1835
1836 return sts;
1837 }
1838
1839 void mvs_do_release_task(struct mvs_info *mvi,
1840 int phy_no, struct domain_device *dev)
1841 {
1842 u32 slot_idx;
1843 struct mvs_phy *phy;
1844 struct mvs_port *port;
1845 struct mvs_slot_info *slot, *slot2;
1846
1847 phy = &mvi->phy[phy_no];
1848 port = phy->port;
1849 if (!port)
1850 return;
1851 /* clean cmpl queue in case request is already finished */
1852 mvs_int_rx(mvi, false);
1853
1854
1855
1856 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1857 struct sas_task *task;
1858 slot_idx = (u32) (slot - mvi->slot_info);
1859 task = slot->task;
1860
1861 if (dev && task->dev != dev)
1862 continue;
1863
1864 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1865 slot_idx, slot->slot_tag, task);
1866 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1867
1868 mvs_slot_complete(mvi, slot_idx, 1);
1869 }
1870 }
1871
1872 void mvs_release_task(struct mvs_info *mvi,
1873 struct domain_device *dev)
1874 {
1875 int i, phyno[WIDE_PORT_MAX_PHY], num;
1876 num = mvs_find_dev_phyno(dev, phyno);
1877 for (i = 0; i < num; i++)
1878 mvs_do_release_task(mvi, phyno[i], dev);
1879 }
1880
1881 static void mvs_phy_disconnected(struct mvs_phy *phy)
1882 {
1883 phy->phy_attached = 0;
1884 phy->att_dev_info = 0;
1885 phy->att_dev_sas_addr = 0;
1886 }
1887
1888 static void mvs_work_queue(struct work_struct *work)
1889 {
1890 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1891 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1892 struct mvs_info *mvi = mwq->mvi;
1893 unsigned long flags;
1894 u32 phy_no = (unsigned long) mwq->data;
1895 struct sas_ha_struct *sas_ha = mvi->sas;
1896 struct mvs_phy *phy = &mvi->phy[phy_no];
1897 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1898
1899 spin_lock_irqsave(&mvi->lock, flags);
1900 if (mwq->handler & PHY_PLUG_EVENT) {
1901
1902 if (phy->phy_event & PHY_PLUG_OUT) {
1903 u32 tmp;
1904 struct sas_identify_frame *id;
1905 id = (struct sas_identify_frame *)phy->frame_rcvd;
1906 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1907 phy->phy_event &= ~PHY_PLUG_OUT;
1908 if (!(tmp & PHY_READY_MASK)) {
1909 sas_phy_disconnected(sas_phy);
1910 mvs_phy_disconnected(phy);
1911 sas_ha->notify_phy_event(sas_phy,
1912 PHYE_LOSS_OF_SIGNAL);
1913 mv_dprintk("phy%d Removed Device\n", phy_no);
1914 } else {
1915 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1916 mvs_update_phyinfo(mvi, phy_no, 1);
1917 mvs_bytes_dmaed(mvi, phy_no);
1918 mvs_port_notify_formed(sas_phy, 0);
1919 mv_dprintk("phy%d Attached Device\n", phy_no);
1920 }
1921 }
1922 } else if (mwq->handler & EXP_BRCT_CHG) {
1923 phy->phy_event &= ~EXP_BRCT_CHG;
1924 sas_ha->notify_port_event(sas_phy,
1925 PORTE_BROADCAST_RCVD);
1926 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1927 }
1928 list_del(&mwq->entry);
1929 spin_unlock_irqrestore(&mvi->lock, flags);
1930 kfree(mwq);
1931 }
1932
1933 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1934 {
1935 struct mvs_wq *mwq;
1936 int ret = 0;
1937
1938 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1939 if (mwq) {
1940 mwq->mvi = mvi;
1941 mwq->data = data;
1942 mwq->handler = handler;
1943 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1944 list_add_tail(&mwq->entry, &mvi->wq_list);
1945 schedule_delayed_work(&mwq->work_q, HZ * 2);
1946 } else
1947 ret = -ENOMEM;
1948
1949 return ret;
1950 }
1951
1952 static void mvs_sig_time_out(unsigned long tphy)
1953 {
1954 struct mvs_phy *phy = (struct mvs_phy *)tphy;
1955 struct mvs_info *mvi = phy->mvi;
1956 u8 phy_no;
1957
1958 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1959 if (&mvi->phy[phy_no] == phy) {
1960 mv_dprintk("Get signature time out, reset phy %d\n",
1961 phy_no+mvi->id*mvi->chip->n_phy);
1962 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1963 }
1964 }
1965 }
1966
1967 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1968 {
1969 u32 tmp;
1970 struct mvs_phy *phy = &mvi->phy[phy_no];
1971
1972 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1973 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1974 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1975 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1976 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1977 phy->irq_status);
1978
1979 /*
1980 * events is port event now ,
1981 * we need check the interrupt status which belongs to per port.
1982 */
1983
1984 if (phy->irq_status & PHYEV_DCDR_ERR) {
1985 mv_dprintk("phy %d STP decoding error.\n",
1986 phy_no + mvi->id*mvi->chip->n_phy);
1987 }
1988
1989 if (phy->irq_status & PHYEV_POOF) {
1990 mdelay(500);
1991 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1992 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1993 int ready;
1994 mvs_do_release_task(mvi, phy_no, NULL);
1995 phy->phy_event |= PHY_PLUG_OUT;
1996 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
1997 mvs_handle_event(mvi,
1998 (void *)(unsigned long)phy_no,
1999 PHY_PLUG_EVENT);
2000 ready = mvs_is_phy_ready(mvi, phy_no);
2001 if (ready || dev_sata) {
2002 if (MVS_CHIP_DISP->stp_reset)
2003 MVS_CHIP_DISP->stp_reset(mvi,
2004 phy_no);
2005 else
2006 MVS_CHIP_DISP->phy_reset(mvi,
2007 phy_no, MVS_SOFT_RESET);
2008 return;
2009 }
2010 }
2011 }
2012
2013 if (phy->irq_status & PHYEV_COMWAKE) {
2014 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2015 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2016 tmp | PHYEV_SIG_FIS);
2017 if (phy->timer.function == NULL) {
2018 phy->timer.data = (unsigned long)phy;
2019 phy->timer.function = mvs_sig_time_out;
2020 phy->timer.expires = jiffies + 5*HZ;
2021 add_timer(&phy->timer);
2022 }
2023 }
2024 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2025 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2026 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2027 if (phy->phy_status) {
2028 mdelay(10);
2029 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2030 if (phy->phy_type & PORT_TYPE_SATA) {
2031 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2032 mvi, phy_no);
2033 tmp &= ~PHYEV_SIG_FIS;
2034 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2035 phy_no, tmp);
2036 }
2037 mvs_update_phyinfo(mvi, phy_no, 0);
2038 if (phy->phy_type & PORT_TYPE_SAS) {
2039 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2040 mdelay(10);
2041 }
2042
2043 mvs_bytes_dmaed(mvi, phy_no);
2044 /* whether driver is going to handle hot plug */
2045 if (phy->phy_event & PHY_PLUG_OUT) {
2046 mvs_port_notify_formed(&phy->sas_phy, 0);
2047 phy->phy_event &= ~PHY_PLUG_OUT;
2048 }
2049 } else {
2050 mv_dprintk("plugin interrupt but phy%d is gone\n",
2051 phy_no + mvi->id*mvi->chip->n_phy);
2052 }
2053 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2054 mv_dprintk("phy %d broadcast change.\n",
2055 phy_no + mvi->id*mvi->chip->n_phy);
2056 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2057 EXP_BRCT_CHG);
2058 }
2059 }
2060
2061 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2062 {
2063 u32 rx_prod_idx, rx_desc;
2064 bool attn = false;
2065
2066 /* the first dword in the RX ring is special: it contains
2067 * a mirror of the hardware's RX producer index, so that
2068 * we don't have to stall the CPU reading that register.
2069 * The actual RX ring is offset by one dword, due to this.
2070 */
2071 rx_prod_idx = mvi->rx_cons;
2072 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2073 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2074 return 0;
2075
2076 /* The CMPL_Q may come late, read from register and try again
2077 * note: if coalescing is enabled,
2078 * it will need to read from register every time for sure
2079 */
2080 if (unlikely(mvi->rx_cons == rx_prod_idx))
2081 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2082
2083 if (mvi->rx_cons == rx_prod_idx)
2084 return 0;
2085
2086 while (mvi->rx_cons != rx_prod_idx) {
2087 /* increment our internal RX consumer pointer */
2088 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2089 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2090
2091 if (likely(rx_desc & RXQ_DONE))
2092 mvs_slot_complete(mvi, rx_desc, 0);
2093 if (rx_desc & RXQ_ATTN) {
2094 attn = true;
2095 } else if (rx_desc & RXQ_ERR) {
2096 if (!(rx_desc & RXQ_DONE))
2097 mvs_slot_complete(mvi, rx_desc, 0);
2098 } else if (rx_desc & RXQ_SLOT_RESET) {
2099 mvs_slot_free(mvi, rx_desc);
2100 }
2101 }
2102
2103 if (attn && self_clear)
2104 MVS_CHIP_DISP->int_full(mvi);
2105 return 0;
2106 }
2107
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