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Merge branch 'linus' into timers/core
[deliverable/linux.git] / drivers / scsi / mvsas / mv_sas.c
1 /*
2 * Marvell 88SE64xx/88SE94xx main function
3 *
4 * Copyright 2007 Red Hat, Inc.
5 * Copyright 2008 Marvell. <kewei@marvell.com>
6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
7 *
8 * This file is licensed under GPLv2.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; version 2 of the
13 * License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 * USA
24 */
25
26 #include "mv_sas.h"
27
28 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
29 {
30 if (task->lldd_task) {
31 struct mvs_slot_info *slot;
32 slot = task->lldd_task;
33 *tag = slot->slot_tag;
34 return 1;
35 }
36 return 0;
37 }
38
39 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
40 {
41 void *bitmap = mvi->tags;
42 clear_bit(tag, bitmap);
43 }
44
45 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
46 {
47 mvs_tag_clear(mvi, tag);
48 }
49
50 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
51 {
52 void *bitmap = mvi->tags;
53 set_bit(tag, bitmap);
54 }
55
56 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
57 {
58 unsigned int index, tag;
59 void *bitmap = mvi->tags;
60
61 index = find_first_zero_bit(bitmap, mvi->tags_num);
62 tag = index;
63 if (tag >= mvi->tags_num)
64 return -SAS_QUEUE_FULL;
65 mvs_tag_set(mvi, tag);
66 *tag_out = tag;
67 return 0;
68 }
69
70 void mvs_tag_init(struct mvs_info *mvi)
71 {
72 int i;
73 for (i = 0; i < mvi->tags_num; ++i)
74 mvs_tag_clear(mvi, i);
75 }
76
77 struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
78 {
79 unsigned long i = 0, j = 0, hi = 0;
80 struct sas_ha_struct *sha = dev->port->ha;
81 struct mvs_info *mvi = NULL;
82 struct asd_sas_phy *phy;
83
84 while (sha->sas_port[i]) {
85 if (sha->sas_port[i] == dev->port) {
86 phy = container_of(sha->sas_port[i]->phy_list.next,
87 struct asd_sas_phy, port_phy_el);
88 j = 0;
89 while (sha->sas_phy[j]) {
90 if (sha->sas_phy[j] == phy)
91 break;
92 j++;
93 }
94 break;
95 }
96 i++;
97 }
98 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
99 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
100
101 return mvi;
102
103 }
104
105 int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
106 {
107 unsigned long i = 0, j = 0, n = 0, num = 0;
108 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
109 struct mvs_info *mvi = mvi_dev->mvi_info;
110 struct sas_ha_struct *sha = dev->port->ha;
111
112 while (sha->sas_port[i]) {
113 if (sha->sas_port[i] == dev->port) {
114 struct asd_sas_phy *phy;
115 list_for_each_entry(phy,
116 &sha->sas_port[i]->phy_list, port_phy_el) {
117 j = 0;
118 while (sha->sas_phy[j]) {
119 if (sha->sas_phy[j] == phy)
120 break;
121 j++;
122 }
123 phyno[n] = (j >= mvi->chip->n_phy) ?
124 (j - mvi->chip->n_phy) : j;
125 num++;
126 n++;
127 }
128 break;
129 }
130 i++;
131 }
132 return num;
133 }
134
135 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
136 u8 reg_set)
137 {
138 u32 dev_no;
139 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
140 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
141 continue;
142
143 if (mvi->devices[dev_no].taskfileset == reg_set)
144 return &mvi->devices[dev_no];
145 }
146 return NULL;
147 }
148
149 static inline void mvs_free_reg_set(struct mvs_info *mvi,
150 struct mvs_device *dev)
151 {
152 if (!dev) {
153 mv_printk("device has been free.\n");
154 return;
155 }
156 if (dev->taskfileset == MVS_ID_NOT_MAPPED)
157 return;
158 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
159 }
160
161 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
162 struct mvs_device *dev)
163 {
164 if (dev->taskfileset != MVS_ID_NOT_MAPPED)
165 return 0;
166 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
167 }
168
169 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
170 {
171 u32 no;
172 for_each_phy(phy_mask, phy_mask, no) {
173 if (!(phy_mask & 1))
174 continue;
175 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
176 }
177 }
178
179 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
180 void *funcdata)
181 {
182 int rc = 0, phy_id = sas_phy->id;
183 u32 tmp, i = 0, hi;
184 struct sas_ha_struct *sha = sas_phy->ha;
185 struct mvs_info *mvi = NULL;
186
187 while (sha->sas_phy[i]) {
188 if (sha->sas_phy[i] == sas_phy)
189 break;
190 i++;
191 }
192 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
193 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
194
195 switch (func) {
196 case PHY_FUNC_SET_LINK_RATE:
197 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
198 break;
199
200 case PHY_FUNC_HARD_RESET:
201 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
202 if (tmp & PHY_RST_HARD)
203 break;
204 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
205 break;
206
207 case PHY_FUNC_LINK_RESET:
208 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
209 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
210 break;
211
212 case PHY_FUNC_DISABLE:
213 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
214 break;
215 case PHY_FUNC_RELEASE_SPINUP_HOLD:
216 default:
217 rc = -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_ha_struct *sha = mvi->sas;
445 struct sas_task *task = tei->task;
446 struct domain_device *dev = task->dev;
447 struct mvs_device *mvi_dev = dev->lldd_dev;
448 struct mvs_cmd_hdr *hdr = tei->hdr;
449 struct asd_sas_port *sas_port = dev->port;
450 struct sas_phy *sphy = dev->phy;
451 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
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 (MVS_PHY_ID << 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.command_set == ATAPI_COMMAND_SET) {
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.command_set == ATAPI_COMMAND_SET)
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
570 static 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)))
711 static 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
840 err_out_slot_buf:
841 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
842 err_out_tag:
843 mvs_tag_free(mvi, tag);
844 err_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);
851 prep_out:
852 return rc;
853 }
854
855 static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags)
856 {
857 struct mvs_task_list *first = NULL;
858
859 for (; *num > 0; --*num) {
860 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags);
861
862 if (!mvs_list)
863 break;
864
865 INIT_LIST_HEAD(&mvs_list->list);
866 if (!first)
867 first = mvs_list;
868 else
869 list_add_tail(&mvs_list->list, &first->list);
870
871 }
872
873 return first;
874 }
875
876 static inline void mvs_task_free_list(struct mvs_task_list *mvs_list)
877 {
878 LIST_HEAD(list);
879 struct list_head *pos, *a;
880 struct mvs_task_list *mlist = NULL;
881
882 __list_add(&list, mvs_list->list.prev, &mvs_list->list);
883
884 list_for_each_safe(pos, a, &list) {
885 list_del_init(pos);
886 mlist = list_entry(pos, struct mvs_task_list, list);
887 kmem_cache_free(mvs_task_list_cache, mlist);
888 }
889 }
890
891 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
892 struct completion *completion, int is_tmf,
893 struct mvs_tmf_task *tmf)
894 {
895 struct mvs_info *mvi = NULL;
896 u32 rc = 0;
897 u32 pass = 0;
898 unsigned long flags = 0;
899
900 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
901
902 spin_lock_irqsave(&mvi->lock, flags);
903 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
904 if (rc)
905 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
906
907 if (likely(pass))
908 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
909 (MVS_CHIP_SLOT_SZ - 1));
910 spin_unlock_irqrestore(&mvi->lock, flags);
911
912 return rc;
913 }
914
915 static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
916 struct completion *completion, int is_tmf,
917 struct mvs_tmf_task *tmf)
918 {
919 struct domain_device *dev = task->dev;
920 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha;
921 struct mvs_info *mvi = NULL;
922 struct sas_task *t = task;
923 struct mvs_task_list *mvs_list = NULL, *a;
924 LIST_HEAD(q);
925 int pass[2] = {0};
926 u32 rc = 0;
927 u32 n = num;
928 unsigned long flags = 0;
929
930 mvs_list = mvs_task_alloc_list(&n, gfp_flags);
931 if (n) {
932 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__);
933 rc = -ENOMEM;
934 goto free_list;
935 }
936
937 __list_add(&q, mvs_list->list.prev, &mvs_list->list);
938
939 list_for_each_entry(a, &q, list) {
940 a->task = t;
941 t = list_entry(t->list.next, struct sas_task, list);
942 }
943
944 list_for_each_entry(a, &q , list) {
945
946 t = a->task;
947 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info;
948
949 spin_lock_irqsave(&mvi->lock, flags);
950 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]);
951 if (rc)
952 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
953 spin_unlock_irqrestore(&mvi->lock, flags);
954 }
955
956 if (likely(pass[0]))
957 MVS_CHIP_DISP->start_delivery(mpi->mvi[0],
958 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
959
960 if (likely(pass[1]))
961 MVS_CHIP_DISP->start_delivery(mpi->mvi[1],
962 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
963
964 list_del_init(&q);
965
966 free_list:
967 if (mvs_list)
968 mvs_task_free_list(mvs_list);
969
970 return rc;
971 }
972
973 int mvs_queue_command(struct sas_task *task, const int num,
974 gfp_t gfp_flags)
975 {
976 struct mvs_device *mvi_dev = task->dev->lldd_dev;
977 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas;
978
979 if (sas->lldd_max_execute_num < 2)
980 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL);
981 else
982 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL);
983 }
984
985 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
986 {
987 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
988 mvs_tag_clear(mvi, slot_idx);
989 }
990
991 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
992 struct mvs_slot_info *slot, u32 slot_idx)
993 {
994 if (!slot->task)
995 return;
996 if (!sas_protocol_ata(task->task_proto))
997 if (slot->n_elem)
998 dma_unmap_sg(mvi->dev, task->scatter,
999 slot->n_elem, task->data_dir);
1000
1001 switch (task->task_proto) {
1002 case SAS_PROTOCOL_SMP:
1003 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
1004 PCI_DMA_FROMDEVICE);
1005 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
1006 PCI_DMA_TODEVICE);
1007 break;
1008
1009 case SAS_PROTOCOL_SATA:
1010 case SAS_PROTOCOL_STP:
1011 case SAS_PROTOCOL_SSP:
1012 default:
1013 /* do nothing */
1014 break;
1015 }
1016
1017 if (slot->buf) {
1018 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
1019 slot->buf = NULL;
1020 }
1021 list_del_init(&slot->entry);
1022 task->lldd_task = NULL;
1023 slot->task = NULL;
1024 slot->port = NULL;
1025 slot->slot_tag = 0xFFFFFFFF;
1026 mvs_slot_free(mvi, slot_idx);
1027 }
1028
1029 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
1030 {
1031 struct mvs_phy *phy = &mvi->phy[phy_no];
1032 struct mvs_port *port = phy->port;
1033 int j, no;
1034
1035 for_each_phy(port->wide_port_phymap, j, no) {
1036 if (j & 1) {
1037 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1038 PHYR_WIDE_PORT);
1039 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1040 port->wide_port_phymap);
1041 } else {
1042 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1043 PHYR_WIDE_PORT);
1044 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1045 0);
1046 }
1047 }
1048 }
1049
1050 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
1051 {
1052 u32 tmp;
1053 struct mvs_phy *phy = &mvi->phy[i];
1054 struct mvs_port *port = phy->port;
1055
1056 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
1057 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
1058 if (!port)
1059 phy->phy_attached = 1;
1060 return tmp;
1061 }
1062
1063 if (port) {
1064 if (phy->phy_type & PORT_TYPE_SAS) {
1065 port->wide_port_phymap &= ~(1U << i);
1066 if (!port->wide_port_phymap)
1067 port->port_attached = 0;
1068 mvs_update_wideport(mvi, i);
1069 } else if (phy->phy_type & PORT_TYPE_SATA)
1070 port->port_attached = 0;
1071 phy->port = NULL;
1072 phy->phy_attached = 0;
1073 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1074 }
1075 return 0;
1076 }
1077
1078 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
1079 {
1080 u32 *s = (u32 *) buf;
1081
1082 if (!s)
1083 return NULL;
1084
1085 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
1086 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1087
1088 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
1089 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1090
1091 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
1092 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1093
1094 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
1095 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1096
1097 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
1098 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1099
1100 return s;
1101 }
1102
1103 static u32 mvs_is_sig_fis_received(u32 irq_status)
1104 {
1105 return irq_status & PHYEV_SIG_FIS;
1106 }
1107
1108 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1109 {
1110 if (phy->timer.function)
1111 del_timer(&phy->timer);
1112 phy->timer.function = NULL;
1113 }
1114
1115 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1116 {
1117 struct mvs_phy *phy = &mvi->phy[i];
1118 struct sas_identify_frame *id;
1119
1120 id = (struct sas_identify_frame *)phy->frame_rcvd;
1121
1122 if (get_st) {
1123 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1124 phy->phy_status = mvs_is_phy_ready(mvi, i);
1125 }
1126
1127 if (phy->phy_status) {
1128 int oob_done = 0;
1129 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1130
1131 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1132
1133 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1134 if (phy->phy_type & PORT_TYPE_SATA) {
1135 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1136 if (mvs_is_sig_fis_received(phy->irq_status)) {
1137 mvs_sig_remove_timer(phy);
1138 phy->phy_attached = 1;
1139 phy->att_dev_sas_addr =
1140 i + mvi->id * mvi->chip->n_phy;
1141 if (oob_done)
1142 sas_phy->oob_mode = SATA_OOB_MODE;
1143 phy->frame_rcvd_size =
1144 sizeof(struct dev_to_host_fis);
1145 mvs_get_d2h_reg(mvi, i, id);
1146 } else {
1147 u32 tmp;
1148 dev_printk(KERN_DEBUG, mvi->dev,
1149 "Phy%d : No sig fis\n", i);
1150 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1151 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1152 tmp | PHYEV_SIG_FIS);
1153 phy->phy_attached = 0;
1154 phy->phy_type &= ~PORT_TYPE_SATA;
1155 goto out_done;
1156 }
1157 } else if (phy->phy_type & PORT_TYPE_SAS
1158 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1159 phy->phy_attached = 1;
1160 phy->identify.device_type =
1161 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1162
1163 if (phy->identify.device_type == SAS_END_DEVICE)
1164 phy->identify.target_port_protocols =
1165 SAS_PROTOCOL_SSP;
1166 else if (phy->identify.device_type != SAS_PHY_UNUSED)
1167 phy->identify.target_port_protocols =
1168 SAS_PROTOCOL_SMP;
1169 if (oob_done)
1170 sas_phy->oob_mode = SAS_OOB_MODE;
1171 phy->frame_rcvd_size =
1172 sizeof(struct sas_identify_frame);
1173 }
1174 memcpy(sas_phy->attached_sas_addr,
1175 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1176
1177 if (MVS_CHIP_DISP->phy_work_around)
1178 MVS_CHIP_DISP->phy_work_around(mvi, i);
1179 }
1180 mv_dprintk("phy %d attach dev info is %x\n",
1181 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1182 mv_dprintk("phy %d attach sas addr is %llx\n",
1183 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1184 out_done:
1185 if (get_st)
1186 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1187 }
1188
1189 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1190 {
1191 struct sas_ha_struct *sas_ha = sas_phy->ha;
1192 struct mvs_info *mvi = NULL; int i = 0, hi;
1193 struct mvs_phy *phy = sas_phy->lldd_phy;
1194 struct asd_sas_port *sas_port = sas_phy->port;
1195 struct mvs_port *port;
1196 unsigned long flags = 0;
1197 if (!sas_port)
1198 return;
1199
1200 while (sas_ha->sas_phy[i]) {
1201 if (sas_ha->sas_phy[i] == sas_phy)
1202 break;
1203 i++;
1204 }
1205 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1206 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1207 if (i >= mvi->chip->n_phy)
1208 port = &mvi->port[i - mvi->chip->n_phy];
1209 else
1210 port = &mvi->port[i];
1211 if (lock)
1212 spin_lock_irqsave(&mvi->lock, flags);
1213 port->port_attached = 1;
1214 phy->port = port;
1215 sas_port->lldd_port = port;
1216 if (phy->phy_type & PORT_TYPE_SAS) {
1217 port->wide_port_phymap = sas_port->phy_mask;
1218 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1219 mvs_update_wideport(mvi, sas_phy->id);
1220
1221 /* direct attached SAS device */
1222 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1223 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1224 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1225 }
1226 }
1227 if (lock)
1228 spin_unlock_irqrestore(&mvi->lock, flags);
1229 }
1230
1231 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1232 {
1233 struct domain_device *dev;
1234 struct mvs_phy *phy = sas_phy->lldd_phy;
1235 struct mvs_info *mvi = phy->mvi;
1236 struct asd_sas_port *port = sas_phy->port;
1237 int phy_no = 0;
1238
1239 while (phy != &mvi->phy[phy_no]) {
1240 phy_no++;
1241 if (phy_no >= MVS_MAX_PHYS)
1242 return;
1243 }
1244 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1245 mvs_do_release_task(phy->mvi, phy_no, dev);
1246
1247 }
1248
1249
1250 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1251 {
1252 mvs_port_notify_formed(sas_phy, 1);
1253 }
1254
1255 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1256 {
1257 mvs_port_notify_deformed(sas_phy, 1);
1258 }
1259
1260 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1261 {
1262 u32 dev;
1263 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1264 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1265 mvi->devices[dev].device_id = dev;
1266 return &mvi->devices[dev];
1267 }
1268 }
1269
1270 if (dev == MVS_MAX_DEVICES)
1271 mv_printk("max support %d devices, ignore ..\n",
1272 MVS_MAX_DEVICES);
1273
1274 return NULL;
1275 }
1276
1277 void mvs_free_dev(struct mvs_device *mvi_dev)
1278 {
1279 u32 id = mvi_dev->device_id;
1280 memset(mvi_dev, 0, sizeof(*mvi_dev));
1281 mvi_dev->device_id = id;
1282 mvi_dev->dev_type = SAS_PHY_UNUSED;
1283 mvi_dev->dev_status = MVS_DEV_NORMAL;
1284 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1285 }
1286
1287 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1288 {
1289 unsigned long flags = 0;
1290 int res = 0;
1291 struct mvs_info *mvi = NULL;
1292 struct domain_device *parent_dev = dev->parent;
1293 struct mvs_device *mvi_device;
1294
1295 mvi = mvs_find_dev_mvi(dev);
1296
1297 if (lock)
1298 spin_lock_irqsave(&mvi->lock, flags);
1299
1300 mvi_device = mvs_alloc_dev(mvi);
1301 if (!mvi_device) {
1302 res = -1;
1303 goto found_out;
1304 }
1305 dev->lldd_dev = mvi_device;
1306 mvi_device->dev_status = MVS_DEV_NORMAL;
1307 mvi_device->dev_type = dev->dev_type;
1308 mvi_device->mvi_info = mvi;
1309 mvi_device->sas_device = dev;
1310 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1311 int phy_id;
1312 u8 phy_num = parent_dev->ex_dev.num_phys;
1313 struct ex_phy *phy;
1314 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1315 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1316 if (SAS_ADDR(phy->attached_sas_addr) ==
1317 SAS_ADDR(dev->sas_addr)) {
1318 mvi_device->attached_phy = phy_id;
1319 break;
1320 }
1321 }
1322
1323 if (phy_id == phy_num) {
1324 mv_printk("Error: no attached dev:%016llx"
1325 "at ex:%016llx.\n",
1326 SAS_ADDR(dev->sas_addr),
1327 SAS_ADDR(parent_dev->sas_addr));
1328 res = -1;
1329 }
1330 }
1331
1332 found_out:
1333 if (lock)
1334 spin_unlock_irqrestore(&mvi->lock, flags);
1335 return res;
1336 }
1337
1338 int mvs_dev_found(struct domain_device *dev)
1339 {
1340 return mvs_dev_found_notify(dev, 1);
1341 }
1342
1343 void mvs_dev_gone_notify(struct domain_device *dev)
1344 {
1345 unsigned long flags = 0;
1346 struct mvs_device *mvi_dev = dev->lldd_dev;
1347 struct mvs_info *mvi = mvi_dev->mvi_info;
1348
1349 spin_lock_irqsave(&mvi->lock, flags);
1350
1351 if (mvi_dev) {
1352 mv_dprintk("found dev[%d:%x] is gone.\n",
1353 mvi_dev->device_id, mvi_dev->dev_type);
1354 mvs_release_task(mvi, dev);
1355 mvs_free_reg_set(mvi, mvi_dev);
1356 mvs_free_dev(mvi_dev);
1357 } else {
1358 mv_dprintk("found dev has gone.\n");
1359 }
1360 dev->lldd_dev = NULL;
1361 mvi_dev->sas_device = NULL;
1362
1363 spin_unlock_irqrestore(&mvi->lock, flags);
1364 }
1365
1366
1367 void mvs_dev_gone(struct domain_device *dev)
1368 {
1369 mvs_dev_gone_notify(dev);
1370 }
1371
1372 static void mvs_task_done(struct sas_task *task)
1373 {
1374 if (!del_timer(&task->slow_task->timer))
1375 return;
1376 complete(&task->slow_task->completion);
1377 }
1378
1379 static void mvs_tmf_timedout(unsigned long data)
1380 {
1381 struct sas_task *task = (struct sas_task *)data;
1382
1383 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1384 complete(&task->slow_task->completion);
1385 }
1386
1387 #define MVS_TASK_TIMEOUT 20
1388 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1389 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1390 {
1391 int res, retry;
1392 struct sas_task *task = NULL;
1393
1394 for (retry = 0; retry < 3; retry++) {
1395 task = sas_alloc_slow_task(GFP_KERNEL);
1396 if (!task)
1397 return -ENOMEM;
1398
1399 task->dev = dev;
1400 task->task_proto = dev->tproto;
1401
1402 memcpy(&task->ssp_task, parameter, para_len);
1403 task->task_done = mvs_task_done;
1404
1405 task->slow_task->timer.data = (unsigned long) task;
1406 task->slow_task->timer.function = mvs_tmf_timedout;
1407 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1408 add_timer(&task->slow_task->timer);
1409
1410 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1411
1412 if (res) {
1413 del_timer(&task->slow_task->timer);
1414 mv_printk("executing internel task failed:%d\n", res);
1415 goto ex_err;
1416 }
1417
1418 wait_for_completion(&task->slow_task->completion);
1419 res = TMF_RESP_FUNC_FAILED;
1420 /* Even TMF timed out, return direct. */
1421 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1422 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1423 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1424 goto ex_err;
1425 }
1426 }
1427
1428 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1429 task->task_status.stat == SAM_STAT_GOOD) {
1430 res = TMF_RESP_FUNC_COMPLETE;
1431 break;
1432 }
1433
1434 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1435 task->task_status.stat == SAS_DATA_UNDERRUN) {
1436 /* no error, but return the number of bytes of
1437 * underrun */
1438 res = task->task_status.residual;
1439 break;
1440 }
1441
1442 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1443 task->task_status.stat == SAS_DATA_OVERRUN) {
1444 mv_dprintk("blocked task error.\n");
1445 res = -EMSGSIZE;
1446 break;
1447 } else {
1448 mv_dprintk(" task to dev %016llx response: 0x%x "
1449 "status 0x%x\n",
1450 SAS_ADDR(dev->sas_addr),
1451 task->task_status.resp,
1452 task->task_status.stat);
1453 sas_free_task(task);
1454 task = NULL;
1455
1456 }
1457 }
1458 ex_err:
1459 BUG_ON(retry == 3 && task != NULL);
1460 sas_free_task(task);
1461 return res;
1462 }
1463
1464 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1465 u8 *lun, struct mvs_tmf_task *tmf)
1466 {
1467 struct sas_ssp_task ssp_task;
1468 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1469 return TMF_RESP_FUNC_ESUPP;
1470
1471 memcpy(ssp_task.LUN, lun, 8);
1472
1473 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1474 sizeof(ssp_task), tmf);
1475 }
1476
1477
1478 /* Standard mandates link reset for ATA (type 0)
1479 and hard reset for SSP (type 1) , only for RECOVERY */
1480 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1481 {
1482 int rc;
1483 struct sas_phy *phy = sas_get_local_phy(dev);
1484 int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1485 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1486 rc = sas_phy_reset(phy, reset_type);
1487 sas_put_local_phy(phy);
1488 msleep(2000);
1489 return rc;
1490 }
1491
1492 /* mandatory SAM-3 */
1493 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1494 {
1495 unsigned long flags;
1496 int rc = TMF_RESP_FUNC_FAILED;
1497 struct mvs_tmf_task tmf_task;
1498 struct mvs_device * mvi_dev = dev->lldd_dev;
1499 struct mvs_info *mvi = mvi_dev->mvi_info;
1500
1501 tmf_task.tmf = TMF_LU_RESET;
1502 mvi_dev->dev_status = MVS_DEV_EH;
1503 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1504 if (rc == TMF_RESP_FUNC_COMPLETE) {
1505 spin_lock_irqsave(&mvi->lock, flags);
1506 mvs_release_task(mvi, dev);
1507 spin_unlock_irqrestore(&mvi->lock, flags);
1508 }
1509 /* If failed, fall-through I_T_Nexus reset */
1510 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1511 mvi_dev->device_id, rc);
1512 return rc;
1513 }
1514
1515 int mvs_I_T_nexus_reset(struct domain_device *dev)
1516 {
1517 unsigned long flags;
1518 int rc = TMF_RESP_FUNC_FAILED;
1519 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1520 struct mvs_info *mvi = mvi_dev->mvi_info;
1521
1522 if (mvi_dev->dev_status != MVS_DEV_EH)
1523 return TMF_RESP_FUNC_COMPLETE;
1524 else
1525 mvi_dev->dev_status = MVS_DEV_NORMAL;
1526 rc = mvs_debug_I_T_nexus_reset(dev);
1527 mv_printk("%s for device[%x]:rc= %d\n",
1528 __func__, mvi_dev->device_id, rc);
1529
1530 spin_lock_irqsave(&mvi->lock, flags);
1531 mvs_release_task(mvi, dev);
1532 spin_unlock_irqrestore(&mvi->lock, flags);
1533
1534 return rc;
1535 }
1536 /* optional SAM-3 */
1537 int mvs_query_task(struct sas_task *task)
1538 {
1539 u32 tag;
1540 struct scsi_lun lun;
1541 struct mvs_tmf_task tmf_task;
1542 int rc = TMF_RESP_FUNC_FAILED;
1543
1544 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1545 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1546 struct domain_device *dev = task->dev;
1547 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1548 struct mvs_info *mvi = mvi_dev->mvi_info;
1549
1550 int_to_scsilun(cmnd->device->lun, &lun);
1551 rc = mvs_find_tag(mvi, task, &tag);
1552 if (rc == 0) {
1553 rc = TMF_RESP_FUNC_FAILED;
1554 return rc;
1555 }
1556
1557 tmf_task.tmf = TMF_QUERY_TASK;
1558 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1559
1560 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1561 switch (rc) {
1562 /* The task is still in Lun, release it then */
1563 case TMF_RESP_FUNC_SUCC:
1564 /* The task is not in Lun or failed, reset the phy */
1565 case TMF_RESP_FUNC_FAILED:
1566 case TMF_RESP_FUNC_COMPLETE:
1567 break;
1568 }
1569 }
1570 mv_printk("%s:rc= %d\n", __func__, rc);
1571 return rc;
1572 }
1573
1574 /* mandatory SAM-3, still need free task/slot info */
1575 int mvs_abort_task(struct sas_task *task)
1576 {
1577 struct scsi_lun lun;
1578 struct mvs_tmf_task tmf_task;
1579 struct domain_device *dev = task->dev;
1580 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1581 struct mvs_info *mvi;
1582 int rc = TMF_RESP_FUNC_FAILED;
1583 unsigned long flags;
1584 u32 tag;
1585
1586 if (!mvi_dev) {
1587 mv_printk("Device has removed\n");
1588 return TMF_RESP_FUNC_FAILED;
1589 }
1590
1591 mvi = mvi_dev->mvi_info;
1592
1593 spin_lock_irqsave(&task->task_state_lock, flags);
1594 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1595 spin_unlock_irqrestore(&task->task_state_lock, flags);
1596 rc = TMF_RESP_FUNC_COMPLETE;
1597 goto out;
1598 }
1599 spin_unlock_irqrestore(&task->task_state_lock, flags);
1600 mvi_dev->dev_status = MVS_DEV_EH;
1601 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1602 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1603
1604 int_to_scsilun(cmnd->device->lun, &lun);
1605 rc = mvs_find_tag(mvi, task, &tag);
1606 if (rc == 0) {
1607 mv_printk("No such tag in %s\n", __func__);
1608 rc = TMF_RESP_FUNC_FAILED;
1609 return rc;
1610 }
1611
1612 tmf_task.tmf = TMF_ABORT_TASK;
1613 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1614
1615 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1616
1617 /* if successful, clear the task and callback forwards.*/
1618 if (rc == TMF_RESP_FUNC_COMPLETE) {
1619 u32 slot_no;
1620 struct mvs_slot_info *slot;
1621
1622 if (task->lldd_task) {
1623 slot = task->lldd_task;
1624 slot_no = (u32) (slot - mvi->slot_info);
1625 spin_lock_irqsave(&mvi->lock, flags);
1626 mvs_slot_complete(mvi, slot_no, 1);
1627 spin_unlock_irqrestore(&mvi->lock, flags);
1628 }
1629 }
1630
1631 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1632 task->task_proto & SAS_PROTOCOL_STP) {
1633 if (SAS_SATA_DEV == dev->dev_type) {
1634 struct mvs_slot_info *slot = task->lldd_task;
1635 u32 slot_idx = (u32)(slot - mvi->slot_info);
1636 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1637 "slot=%p slot_idx=x%x\n",
1638 mvi, task, slot, slot_idx);
1639 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1640 mvs_slot_task_free(mvi, task, slot, slot_idx);
1641 rc = TMF_RESP_FUNC_COMPLETE;
1642 goto out;
1643 }
1644
1645 }
1646 out:
1647 if (rc != TMF_RESP_FUNC_COMPLETE)
1648 mv_printk("%s:rc= %d\n", __func__, rc);
1649 return rc;
1650 }
1651
1652 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1653 {
1654 int rc = TMF_RESP_FUNC_FAILED;
1655 struct mvs_tmf_task tmf_task;
1656
1657 tmf_task.tmf = TMF_ABORT_TASK_SET;
1658 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1659
1660 return rc;
1661 }
1662
1663 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1664 {
1665 int rc = TMF_RESP_FUNC_FAILED;
1666 struct mvs_tmf_task tmf_task;
1667
1668 tmf_task.tmf = TMF_CLEAR_ACA;
1669 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1670
1671 return rc;
1672 }
1673
1674 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1675 {
1676 int rc = TMF_RESP_FUNC_FAILED;
1677 struct mvs_tmf_task tmf_task;
1678
1679 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1680 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1681
1682 return rc;
1683 }
1684
1685 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1686 u32 slot_idx, int err)
1687 {
1688 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1689 struct task_status_struct *tstat = &task->task_status;
1690 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1691 int stat = SAM_STAT_GOOD;
1692
1693
1694 resp->frame_len = sizeof(struct dev_to_host_fis);
1695 memcpy(&resp->ending_fis[0],
1696 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1697 sizeof(struct dev_to_host_fis));
1698 tstat->buf_valid_size = sizeof(*resp);
1699 if (unlikely(err)) {
1700 if (unlikely(err & CMD_ISS_STPD))
1701 stat = SAS_OPEN_REJECT;
1702 else
1703 stat = SAS_PROTO_RESPONSE;
1704 }
1705
1706 return stat;
1707 }
1708
1709 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1710 int key, int asc, int ascq)
1711 {
1712 memset(buffer, 0, len);
1713
1714 if (d_sense) {
1715 /* Descriptor format */
1716 if (len < 4) {
1717 mv_printk("Length %d of sense buffer too small to "
1718 "fit sense %x:%x:%x", len, key, asc, ascq);
1719 }
1720
1721 buffer[0] = 0x72; /* Response Code */
1722 if (len > 1)
1723 buffer[1] = key; /* Sense Key */
1724 if (len > 2)
1725 buffer[2] = asc; /* ASC */
1726 if (len > 3)
1727 buffer[3] = ascq; /* ASCQ */
1728 } else {
1729 if (len < 14) {
1730 mv_printk("Length %d of sense buffer too small to "
1731 "fit sense %x:%x:%x", len, key, asc, ascq);
1732 }
1733
1734 buffer[0] = 0x70; /* Response Code */
1735 if (len > 2)
1736 buffer[2] = key; /* Sense Key */
1737 if (len > 7)
1738 buffer[7] = 0x0a; /* Additional Sense Length */
1739 if (len > 12)
1740 buffer[12] = asc; /* ASC */
1741 if (len > 13)
1742 buffer[13] = ascq; /* ASCQ */
1743 }
1744
1745 return;
1746 }
1747
1748 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1749 u8 key, u8 asc, u8 asc_q)
1750 {
1751 iu->datapres = 2;
1752 iu->response_data_len = 0;
1753 iu->sense_data_len = 17;
1754 iu->status = 02;
1755 mvs_set_sense(iu->sense_data, 17, 0,
1756 key, asc, asc_q);
1757 }
1758
1759 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1760 u32 slot_idx)
1761 {
1762 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1763 int stat;
1764 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1765 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1766 u32 tfs = 0;
1767 enum mvs_port_type type = PORT_TYPE_SAS;
1768
1769 if (err_dw0 & CMD_ISS_STPD)
1770 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1771
1772 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1773
1774 stat = SAM_STAT_CHECK_CONDITION;
1775 switch (task->task_proto) {
1776 case SAS_PROTOCOL_SSP:
1777 {
1778 stat = SAS_ABORTED_TASK;
1779 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1780 struct ssp_response_iu *iu = slot->response +
1781 sizeof(struct mvs_err_info);
1782 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1783 sas_ssp_task_response(mvi->dev, task, iu);
1784 stat = SAM_STAT_CHECK_CONDITION;
1785 }
1786 if (err_dw1 & bit(31))
1787 mv_printk("reuse same slot, retry command.\n");
1788 break;
1789 }
1790 case SAS_PROTOCOL_SMP:
1791 stat = SAM_STAT_CHECK_CONDITION;
1792 break;
1793
1794 case SAS_PROTOCOL_SATA:
1795 case SAS_PROTOCOL_STP:
1796 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1797 {
1798 task->ata_task.use_ncq = 0;
1799 stat = SAS_PROTO_RESPONSE;
1800 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1801 }
1802 break;
1803 default:
1804 break;
1805 }
1806
1807 return stat;
1808 }
1809
1810 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1811 {
1812 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1813 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1814 struct sas_task *task = slot->task;
1815 struct mvs_device *mvi_dev = NULL;
1816 struct task_status_struct *tstat;
1817 struct domain_device *dev;
1818 u32 aborted;
1819
1820 void *to;
1821 enum exec_status sts;
1822
1823 if (unlikely(!task || !task->lldd_task || !task->dev))
1824 return -1;
1825
1826 tstat = &task->task_status;
1827 dev = task->dev;
1828 mvi_dev = dev->lldd_dev;
1829
1830 spin_lock(&task->task_state_lock);
1831 task->task_state_flags &=
1832 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1833 task->task_state_flags |= SAS_TASK_STATE_DONE;
1834 /* race condition*/
1835 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1836 spin_unlock(&task->task_state_lock);
1837
1838 memset(tstat, 0, sizeof(*tstat));
1839 tstat->resp = SAS_TASK_COMPLETE;
1840
1841 if (unlikely(aborted)) {
1842 tstat->stat = SAS_ABORTED_TASK;
1843 if (mvi_dev && mvi_dev->running_req)
1844 mvi_dev->running_req--;
1845 if (sas_protocol_ata(task->task_proto))
1846 mvs_free_reg_set(mvi, mvi_dev);
1847
1848 mvs_slot_task_free(mvi, task, slot, slot_idx);
1849 return -1;
1850 }
1851
1852 /* when no device attaching, go ahead and complete by error handling*/
1853 if (unlikely(!mvi_dev || flags)) {
1854 if (!mvi_dev)
1855 mv_dprintk("port has not device.\n");
1856 tstat->stat = SAS_PHY_DOWN;
1857 goto out;
1858 }
1859
1860 /*
1861 * error info record present; slot->response is 32 bit aligned but may
1862 * not be 64 bit aligned, so check for zero in two 32 bit reads
1863 */
1864 if (unlikely((rx_desc & RXQ_ERR)
1865 && (*((u32 *)slot->response)
1866 || *(((u32 *)slot->response) + 1)))) {
1867 mv_dprintk("port %d slot %d rx_desc %X has error info"
1868 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1869 rx_desc, get_unaligned_le64(slot->response));
1870 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1871 tstat->resp = SAS_TASK_COMPLETE;
1872 goto out;
1873 }
1874
1875 switch (task->task_proto) {
1876 case SAS_PROTOCOL_SSP:
1877 /* hw says status == 0, datapres == 0 */
1878 if (rx_desc & RXQ_GOOD) {
1879 tstat->stat = SAM_STAT_GOOD;
1880 tstat->resp = SAS_TASK_COMPLETE;
1881 }
1882 /* response frame present */
1883 else if (rx_desc & RXQ_RSP) {
1884 struct ssp_response_iu *iu = slot->response +
1885 sizeof(struct mvs_err_info);
1886 sas_ssp_task_response(mvi->dev, task, iu);
1887 } else
1888 tstat->stat = SAM_STAT_CHECK_CONDITION;
1889 break;
1890
1891 case SAS_PROTOCOL_SMP: {
1892 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1893 tstat->stat = SAM_STAT_GOOD;
1894 to = kmap_atomic(sg_page(sg_resp));
1895 memcpy(to + sg_resp->offset,
1896 slot->response + sizeof(struct mvs_err_info),
1897 sg_dma_len(sg_resp));
1898 kunmap_atomic(to);
1899 break;
1900 }
1901
1902 case SAS_PROTOCOL_SATA:
1903 case SAS_PROTOCOL_STP:
1904 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1905 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1906 break;
1907 }
1908
1909 default:
1910 tstat->stat = SAM_STAT_CHECK_CONDITION;
1911 break;
1912 }
1913 if (!slot->port->port_attached) {
1914 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1915 tstat->stat = SAS_PHY_DOWN;
1916 }
1917
1918
1919 out:
1920 if (mvi_dev && mvi_dev->running_req) {
1921 mvi_dev->running_req--;
1922 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1923 mvs_free_reg_set(mvi, mvi_dev);
1924 }
1925 mvs_slot_task_free(mvi, task, slot, slot_idx);
1926 sts = tstat->stat;
1927
1928 spin_unlock(&mvi->lock);
1929 if (task->task_done)
1930 task->task_done(task);
1931
1932 spin_lock(&mvi->lock);
1933
1934 return sts;
1935 }
1936
1937 void mvs_do_release_task(struct mvs_info *mvi,
1938 int phy_no, struct domain_device *dev)
1939 {
1940 u32 slot_idx;
1941 struct mvs_phy *phy;
1942 struct mvs_port *port;
1943 struct mvs_slot_info *slot, *slot2;
1944
1945 phy = &mvi->phy[phy_no];
1946 port = phy->port;
1947 if (!port)
1948 return;
1949 /* clean cmpl queue in case request is already finished */
1950 mvs_int_rx(mvi, false);
1951
1952
1953
1954 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1955 struct sas_task *task;
1956 slot_idx = (u32) (slot - mvi->slot_info);
1957 task = slot->task;
1958
1959 if (dev && task->dev != dev)
1960 continue;
1961
1962 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1963 slot_idx, slot->slot_tag, task);
1964 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1965
1966 mvs_slot_complete(mvi, slot_idx, 1);
1967 }
1968 }
1969
1970 void mvs_release_task(struct mvs_info *mvi,
1971 struct domain_device *dev)
1972 {
1973 int i, phyno[WIDE_PORT_MAX_PHY], num;
1974 num = mvs_find_dev_phyno(dev, phyno);
1975 for (i = 0; i < num; i++)
1976 mvs_do_release_task(mvi, phyno[i], dev);
1977 }
1978
1979 static void mvs_phy_disconnected(struct mvs_phy *phy)
1980 {
1981 phy->phy_attached = 0;
1982 phy->att_dev_info = 0;
1983 phy->att_dev_sas_addr = 0;
1984 }
1985
1986 static void mvs_work_queue(struct work_struct *work)
1987 {
1988 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1989 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1990 struct mvs_info *mvi = mwq->mvi;
1991 unsigned long flags;
1992 u32 phy_no = (unsigned long) mwq->data;
1993 struct sas_ha_struct *sas_ha = mvi->sas;
1994 struct mvs_phy *phy = &mvi->phy[phy_no];
1995 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1996
1997 spin_lock_irqsave(&mvi->lock, flags);
1998 if (mwq->handler & PHY_PLUG_EVENT) {
1999
2000 if (phy->phy_event & PHY_PLUG_OUT) {
2001 u32 tmp;
2002 struct sas_identify_frame *id;
2003 id = (struct sas_identify_frame *)phy->frame_rcvd;
2004 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
2005 phy->phy_event &= ~PHY_PLUG_OUT;
2006 if (!(tmp & PHY_READY_MASK)) {
2007 sas_phy_disconnected(sas_phy);
2008 mvs_phy_disconnected(phy);
2009 sas_ha->notify_phy_event(sas_phy,
2010 PHYE_LOSS_OF_SIGNAL);
2011 mv_dprintk("phy%d Removed Device\n", phy_no);
2012 } else {
2013 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2014 mvs_update_phyinfo(mvi, phy_no, 1);
2015 mvs_bytes_dmaed(mvi, phy_no);
2016 mvs_port_notify_formed(sas_phy, 0);
2017 mv_dprintk("phy%d Attached Device\n", phy_no);
2018 }
2019 }
2020 } else if (mwq->handler & EXP_BRCT_CHG) {
2021 phy->phy_event &= ~EXP_BRCT_CHG;
2022 sas_ha->notify_port_event(sas_phy,
2023 PORTE_BROADCAST_RCVD);
2024 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
2025 }
2026 list_del(&mwq->entry);
2027 spin_unlock_irqrestore(&mvi->lock, flags);
2028 kfree(mwq);
2029 }
2030
2031 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2032 {
2033 struct mvs_wq *mwq;
2034 int ret = 0;
2035
2036 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2037 if (mwq) {
2038 mwq->mvi = mvi;
2039 mwq->data = data;
2040 mwq->handler = handler;
2041 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2042 list_add_tail(&mwq->entry, &mvi->wq_list);
2043 schedule_delayed_work(&mwq->work_q, HZ * 2);
2044 } else
2045 ret = -ENOMEM;
2046
2047 return ret;
2048 }
2049
2050 static void mvs_sig_time_out(unsigned long tphy)
2051 {
2052 struct mvs_phy *phy = (struct mvs_phy *)tphy;
2053 struct mvs_info *mvi = phy->mvi;
2054 u8 phy_no;
2055
2056 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2057 if (&mvi->phy[phy_no] == phy) {
2058 mv_dprintk("Get signature time out, reset phy %d\n",
2059 phy_no+mvi->id*mvi->chip->n_phy);
2060 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
2061 }
2062 }
2063 }
2064
2065 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2066 {
2067 u32 tmp;
2068 struct mvs_phy *phy = &mvi->phy[phy_no];
2069
2070 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2071 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2072 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2073 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2074 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
2075 phy->irq_status);
2076
2077 /*
2078 * events is port event now ,
2079 * we need check the interrupt status which belongs to per port.
2080 */
2081
2082 if (phy->irq_status & PHYEV_DCDR_ERR) {
2083 mv_dprintk("phy %d STP decoding error.\n",
2084 phy_no + mvi->id*mvi->chip->n_phy);
2085 }
2086
2087 if (phy->irq_status & PHYEV_POOF) {
2088 mdelay(500);
2089 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2090 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2091 int ready;
2092 mvs_do_release_task(mvi, phy_no, NULL);
2093 phy->phy_event |= PHY_PLUG_OUT;
2094 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2095 mvs_handle_event(mvi,
2096 (void *)(unsigned long)phy_no,
2097 PHY_PLUG_EVENT);
2098 ready = mvs_is_phy_ready(mvi, phy_no);
2099 if (ready || dev_sata) {
2100 if (MVS_CHIP_DISP->stp_reset)
2101 MVS_CHIP_DISP->stp_reset(mvi,
2102 phy_no);
2103 else
2104 MVS_CHIP_DISP->phy_reset(mvi,
2105 phy_no, MVS_SOFT_RESET);
2106 return;
2107 }
2108 }
2109 }
2110
2111 if (phy->irq_status & PHYEV_COMWAKE) {
2112 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2113 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2114 tmp | PHYEV_SIG_FIS);
2115 if (phy->timer.function == NULL) {
2116 phy->timer.data = (unsigned long)phy;
2117 phy->timer.function = mvs_sig_time_out;
2118 phy->timer.expires = jiffies + 5*HZ;
2119 add_timer(&phy->timer);
2120 }
2121 }
2122 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2123 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2124 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2125 if (phy->phy_status) {
2126 mdelay(10);
2127 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2128 if (phy->phy_type & PORT_TYPE_SATA) {
2129 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2130 mvi, phy_no);
2131 tmp &= ~PHYEV_SIG_FIS;
2132 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2133 phy_no, tmp);
2134 }
2135 mvs_update_phyinfo(mvi, phy_no, 0);
2136 if (phy->phy_type & PORT_TYPE_SAS) {
2137 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2138 mdelay(10);
2139 }
2140
2141 mvs_bytes_dmaed(mvi, phy_no);
2142 /* whether driver is going to handle hot plug */
2143 if (phy->phy_event & PHY_PLUG_OUT) {
2144 mvs_port_notify_formed(&phy->sas_phy, 0);
2145 phy->phy_event &= ~PHY_PLUG_OUT;
2146 }
2147 } else {
2148 mv_dprintk("plugin interrupt but phy%d is gone\n",
2149 phy_no + mvi->id*mvi->chip->n_phy);
2150 }
2151 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2152 mv_dprintk("phy %d broadcast change.\n",
2153 phy_no + mvi->id*mvi->chip->n_phy);
2154 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2155 EXP_BRCT_CHG);
2156 }
2157 }
2158
2159 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2160 {
2161 u32 rx_prod_idx, rx_desc;
2162 bool attn = false;
2163
2164 /* the first dword in the RX ring is special: it contains
2165 * a mirror of the hardware's RX producer index, so that
2166 * we don't have to stall the CPU reading that register.
2167 * The actual RX ring is offset by one dword, due to this.
2168 */
2169 rx_prod_idx = mvi->rx_cons;
2170 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2171 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2172 return 0;
2173
2174 /* The CMPL_Q may come late, read from register and try again
2175 * note: if coalescing is enabled,
2176 * it will need to read from register every time for sure
2177 */
2178 if (unlikely(mvi->rx_cons == rx_prod_idx))
2179 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2180
2181 if (mvi->rx_cons == rx_prod_idx)
2182 return 0;
2183
2184 while (mvi->rx_cons != rx_prod_idx) {
2185 /* increment our internal RX consumer pointer */
2186 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2187 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2188
2189 if (likely(rx_desc & RXQ_DONE))
2190 mvs_slot_complete(mvi, rx_desc, 0);
2191 if (rx_desc & RXQ_ATTN) {
2192 attn = true;
2193 } else if (rx_desc & RXQ_ERR) {
2194 if (!(rx_desc & RXQ_DONE))
2195 mvs_slot_complete(mvi, rx_desc, 0);
2196 } else if (rx_desc & RXQ_SLOT_RESET) {
2197 mvs_slot_free(mvi, rx_desc);
2198 }
2199 }
2200
2201 if (attn && self_clear)
2202 MVS_CHIP_DISP->int_full(mvi);
2203 return 0;
2204 }
2205
Linux kernel - Deliverables
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