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[S390] Remove error checking from copy_oldmem_page()
[linux/fpc-iii.git] / drivers / scsi / mvsas / mv_sas.c
bloba4884a57cf79eac395c226c5ddcde895272779e9
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 __devinit mvs_set_sas_addr(struct mvs_info *mvi, int port_id,
224 u32 off_lo, u32 off_hi, u64 sas_addr)
225 {
226 u32 lo = (u32)sas_addr;
227 u32 hi = (u32)(sas_addr>>32);
228
229 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
230 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
231 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
232 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
233 }
234
235 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
236 {
237 struct mvs_phy *phy = &mvi->phy[i];
238 struct asd_sas_phy *sas_phy = &phy->sas_phy;
239 struct sas_ha_struct *sas_ha;
240 if (!phy->phy_attached)
241 return;
242
243 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
244 && phy->phy_type & PORT_TYPE_SAS) {
245 return;
246 }
247
248 sas_ha = mvi->sas;
249 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
250
251 if (sas_phy->phy) {
252 struct sas_phy *sphy = sas_phy->phy;
253
254 sphy->negotiated_linkrate = sas_phy->linkrate;
255 sphy->minimum_linkrate = phy->minimum_linkrate;
256 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
257 sphy->maximum_linkrate = phy->maximum_linkrate;
258 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
259 }
260
261 if (phy->phy_type & PORT_TYPE_SAS) {
262 struct sas_identify_frame *id;
263
264 id = (struct sas_identify_frame *)phy->frame_rcvd;
265 id->dev_type = phy->identify.device_type;
266 id->initiator_bits = SAS_PROTOCOL_ALL;
267 id->target_bits = phy->identify.target_port_protocols;
268
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 scsi_flush_work(shost);
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_task *task = tei->task;
320 struct mvs_cmd_hdr *hdr = tei->hdr;
321 struct domain_device *dev = task->dev;
322 struct asd_sas_port *sas_port = dev->port;
323 struct scatterlist *sg_req, *sg_resp;
324 u32 req_len, resp_len, tag = tei->tag;
325 void *buf_tmp;
326 u8 *buf_oaf;
327 dma_addr_t buf_tmp_dma;
328 void *buf_prd;
329 struct mvs_slot_info *slot = &mvi->slot_info[tag];
330 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
331
332 /*
333 * DMA-map SMP request, response buffers
334 */
335 sg_req = &task->smp_task.smp_req;
336 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
337 if (!elem)
338 return -ENOMEM;
339 req_len = sg_dma_len(sg_req);
340
341 sg_resp = &task->smp_task.smp_resp;
342 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
343 if (!elem) {
344 rc = -ENOMEM;
345 goto err_out;
346 }
347 resp_len = SB_RFB_MAX;
348
349 /* must be in dwords */
350 if ((req_len & 0x3) || (resp_len & 0x3)) {
351 rc = -EINVAL;
352 goto err_out_2;
353 }
354
355 /*
356 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
357 */
358
359 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
360 buf_tmp = slot->buf;
361 buf_tmp_dma = slot->buf_dma;
362
363 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
364
365 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
366 buf_oaf = buf_tmp;
367 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
368
369 buf_tmp += MVS_OAF_SZ;
370 buf_tmp_dma += MVS_OAF_SZ;
371
372 /* region 3: PRD table *********************************** */
373 buf_prd = buf_tmp;
374 if (tei->n_elem)
375 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
376 else
377 hdr->prd_tbl = 0;
378
379 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
380 buf_tmp += i;
381 buf_tmp_dma += i;
382
383 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
384 slot->response = buf_tmp;
385 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
386 if (mvi->flags & MVF_FLAG_SOC)
387 hdr->reserved[0] = 0;
388
389 /*
390 * Fill in TX ring and command slot header
391 */
392 slot->tx = mvi->tx_prod;
393 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
394 TXQ_MODE_I | tag |
395 (sas_port->phy_mask << TXQ_PHY_SHIFT));
396
397 hdr->flags |= flags;
398 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
399 hdr->tags = cpu_to_le32(tag);
400 hdr->data_len = 0;
401
402 /* generate open address frame hdr (first 12 bytes) */
403 /* initiator, SMP, ftype 1h */
404 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
405 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
406 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
407 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
408
409 /* fill in PRD (scatter/gather) table, if any */
410 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
411
412 return 0;
413
414 err_out_2:
415 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
416 PCI_DMA_FROMDEVICE);
417 err_out:
418 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
419 PCI_DMA_TODEVICE);
420 return rc;
421 }
422
423 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
424 {
425 struct ata_queued_cmd *qc = task->uldd_task;
426
427 if (qc) {
428 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
429 qc->tf.command == ATA_CMD_FPDMA_READ) {
430 *tag = qc->tag;
431 return 1;
432 }
433 }
434
435 return 0;
436 }
437
438 static int mvs_task_prep_ata(struct mvs_info *mvi,
439 struct mvs_task_exec_info *tei)
440 {
441 struct sas_task *task = tei->task;
442 struct domain_device *dev = task->dev;
443 struct mvs_device *mvi_dev = dev->lldd_dev;
444 struct mvs_cmd_hdr *hdr = tei->hdr;
445 struct asd_sas_port *sas_port = dev->port;
446 struct mvs_slot_info *slot;
447 void *buf_prd;
448 u32 tag = tei->tag, hdr_tag;
449 u32 flags, del_q;
450 void *buf_tmp;
451 u8 *buf_cmd, *buf_oaf;
452 dma_addr_t buf_tmp_dma;
453 u32 i, req_len, resp_len;
454 const u32 max_resp_len = SB_RFB_MAX;
455
456 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
457 mv_dprintk("Have not enough regiset for dev %d.\n",
458 mvi_dev->device_id);
459 return -EBUSY;
460 }
461 slot = &mvi->slot_info[tag];
462 slot->tx = mvi->tx_prod;
463 del_q = TXQ_MODE_I | tag |
464 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
465 (sas_port->phy_mask << TXQ_PHY_SHIFT) |
466 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
467 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
468
469 if (task->data_dir == DMA_FROM_DEVICE)
470 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
471 else
472 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
473
474 if (task->ata_task.use_ncq)
475 flags |= MCH_FPDMA;
476 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
477 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
478 flags |= MCH_ATAPI;
479 }
480
481 hdr->flags = cpu_to_le32(flags);
482
483 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
484 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
485 else
486 hdr_tag = tag;
487
488 hdr->tags = cpu_to_le32(hdr_tag);
489
490 hdr->data_len = cpu_to_le32(task->total_xfer_len);
491
492 /*
493 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
494 */
495
496 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
497 buf_cmd = buf_tmp = slot->buf;
498 buf_tmp_dma = slot->buf_dma;
499
500 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
501
502 buf_tmp += MVS_ATA_CMD_SZ;
503 buf_tmp_dma += MVS_ATA_CMD_SZ;
504
505 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
506 /* used for STP. unused for SATA? */
507 buf_oaf = buf_tmp;
508 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
509
510 buf_tmp += MVS_OAF_SZ;
511 buf_tmp_dma += MVS_OAF_SZ;
512
513 /* region 3: PRD table ********************************************* */
514 buf_prd = buf_tmp;
515
516 if (tei->n_elem)
517 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
518 else
519 hdr->prd_tbl = 0;
520 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
521
522 buf_tmp += i;
523 buf_tmp_dma += i;
524
525 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
526 slot->response = buf_tmp;
527 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
528 if (mvi->flags & MVF_FLAG_SOC)
529 hdr->reserved[0] = 0;
530
531 req_len = sizeof(struct host_to_dev_fis);
532 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
533 sizeof(struct mvs_err_info) - i;
534
535 /* request, response lengths */
536 resp_len = min(resp_len, max_resp_len);
537 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
538
539 if (likely(!task->ata_task.device_control_reg_update))
540 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
541 /* fill in command FIS and ATAPI CDB */
542 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
543 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
544 memcpy(buf_cmd + STP_ATAPI_CMD,
545 task->ata_task.atapi_packet, 16);
546
547 /* generate open address frame hdr (first 12 bytes) */
548 /* initiator, STP, ftype 1h */
549 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
550 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
551 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
552 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
553
554 /* fill in PRD (scatter/gather) table, if any */
555 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
556
557 if (task->data_dir == DMA_FROM_DEVICE)
558 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
559 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
560
561 return 0;
562 }
563
564 static int mvs_task_prep_ssp(struct mvs_info *mvi,
565 struct mvs_task_exec_info *tei, int is_tmf,
566 struct mvs_tmf_task *tmf)
567 {
568 struct sas_task *task = tei->task;
569 struct mvs_cmd_hdr *hdr = tei->hdr;
570 struct mvs_port *port = tei->port;
571 struct domain_device *dev = task->dev;
572 struct mvs_device *mvi_dev = dev->lldd_dev;
573 struct asd_sas_port *sas_port = dev->port;
574 struct mvs_slot_info *slot;
575 void *buf_prd;
576 struct ssp_frame_hdr *ssp_hdr;
577 void *buf_tmp;
578 u8 *buf_cmd, *buf_oaf, fburst = 0;
579 dma_addr_t buf_tmp_dma;
580 u32 flags;
581 u32 resp_len, req_len, i, tag = tei->tag;
582 const u32 max_resp_len = SB_RFB_MAX;
583 u32 phy_mask;
584
585 slot = &mvi->slot_info[tag];
586
587 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
588 sas_port->phy_mask) & TXQ_PHY_MASK;
589
590 slot->tx = mvi->tx_prod;
591 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
592 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
593 (phy_mask << TXQ_PHY_SHIFT));
594
595 flags = MCH_RETRY;
596 if (task->ssp_task.enable_first_burst) {
597 flags |= MCH_FBURST;
598 fburst = (1 << 7);
599 }
600 if (is_tmf)
601 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
602 else
603 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
604
605 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
606 hdr->tags = cpu_to_le32(tag);
607 hdr->data_len = cpu_to_le32(task->total_xfer_len);
608
609 /*
610 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
611 */
612
613 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
614 buf_cmd = buf_tmp = slot->buf;
615 buf_tmp_dma = slot->buf_dma;
616
617 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
618
619 buf_tmp += MVS_SSP_CMD_SZ;
620 buf_tmp_dma += MVS_SSP_CMD_SZ;
621
622 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
623 buf_oaf = buf_tmp;
624 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
625
626 buf_tmp += MVS_OAF_SZ;
627 buf_tmp_dma += MVS_OAF_SZ;
628
629 /* region 3: PRD table ********************************************* */
630 buf_prd = buf_tmp;
631 if (tei->n_elem)
632 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
633 else
634 hdr->prd_tbl = 0;
635
636 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
637 buf_tmp += i;
638 buf_tmp_dma += i;
639
640 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
641 slot->response = buf_tmp;
642 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
643 if (mvi->flags & MVF_FLAG_SOC)
644 hdr->reserved[0] = 0;
645
646 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
647 sizeof(struct mvs_err_info) - i;
648 resp_len = min(resp_len, max_resp_len);
649
650 req_len = sizeof(struct ssp_frame_hdr) + 28;
651
652 /* request, response lengths */
653 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
654
655 /* generate open address frame hdr (first 12 bytes) */
656 /* initiator, SSP, ftype 1h */
657 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
658 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
659 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
660 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
661
662 /* fill in SSP frame header (Command Table.SSP frame header) */
663 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
664
665 if (is_tmf)
666 ssp_hdr->frame_type = SSP_TASK;
667 else
668 ssp_hdr->frame_type = SSP_COMMAND;
669
670 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
671 HASHED_SAS_ADDR_SIZE);
672 memcpy(ssp_hdr->hashed_src_addr,
673 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
674 ssp_hdr->tag = cpu_to_be16(tag);
675
676 /* fill in IU for TASK and Command Frame */
677 buf_cmd += sizeof(*ssp_hdr);
678 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
679
680 if (ssp_hdr->frame_type != SSP_TASK) {
681 buf_cmd[9] = fburst | task->ssp_task.task_attr |
682 (task->ssp_task.task_prio << 3);
683 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
684 } else{
685 buf_cmd[10] = tmf->tmf;
686 switch (tmf->tmf) {
687 case TMF_ABORT_TASK:
688 case TMF_QUERY_TASK:
689 buf_cmd[12] =
690 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
691 buf_cmd[13] =
692 tmf->tag_of_task_to_be_managed & 0xff;
693 break;
694 default:
695 break;
696 }
697 }
698 /* fill in PRD (scatter/gather) table, if any */
699 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
700 return 0;
701 }
702
703 #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE)))
704 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
705 struct mvs_tmf_task *tmf, int *pass)
706 {
707 struct domain_device *dev = task->dev;
708 struct mvs_device *mvi_dev = dev->lldd_dev;
709 struct mvs_task_exec_info tei;
710 struct mvs_slot_info *slot;
711 u32 tag = 0xdeadbeef, n_elem = 0;
712 int rc = 0;
713
714 if (!dev->port) {
715 struct task_status_struct *tsm = &task->task_status;
716
717 tsm->resp = SAS_TASK_UNDELIVERED;
718 tsm->stat = SAS_PHY_DOWN;
719 /*
720 * libsas will use dev->port, should
721 * not call task_done for sata
722 */
723 if (dev->dev_type != SATA_DEV)
724 task->task_done(task);
725 return rc;
726 }
727
728 if (DEV_IS_GONE(mvi_dev)) {
729 if (mvi_dev)
730 mv_dprintk("device %d not ready.\n",
731 mvi_dev->device_id);
732 else
733 mv_dprintk("device %016llx not ready.\n",
734 SAS_ADDR(dev->sas_addr));
735
736 rc = SAS_PHY_DOWN;
737 return rc;
738 }
739 tei.port = dev->port->lldd_port;
740 if (tei.port && !tei.port->port_attached && !tmf) {
741 if (sas_protocol_ata(task->task_proto)) {
742 struct task_status_struct *ts = &task->task_status;
743 mv_dprintk("SATA/STP port %d does not attach"
744 "device.\n", dev->port->id);
745 ts->resp = SAS_TASK_COMPLETE;
746 ts->stat = SAS_PHY_DOWN;
747
748 task->task_done(task);
749
750 } else {
751 struct task_status_struct *ts = &task->task_status;
752 mv_dprintk("SAS port %d does not attach"
753 "device.\n", dev->port->id);
754 ts->resp = SAS_TASK_UNDELIVERED;
755 ts->stat = SAS_PHY_DOWN;
756 task->task_done(task);
757 }
758 return rc;
759 }
760
761 if (!sas_protocol_ata(task->task_proto)) {
762 if (task->num_scatter) {
763 n_elem = dma_map_sg(mvi->dev,
764 task->scatter,
765 task->num_scatter,
766 task->data_dir);
767 if (!n_elem) {
768 rc = -ENOMEM;
769 goto prep_out;
770 }
771 }
772 } else {
773 n_elem = task->num_scatter;
774 }
775
776 rc = mvs_tag_alloc(mvi, &tag);
777 if (rc)
778 goto err_out;
779
780 slot = &mvi->slot_info[tag];
781
782 task->lldd_task = NULL;
783 slot->n_elem = n_elem;
784 slot->slot_tag = tag;
785
786 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
787 if (!slot->buf)
788 goto err_out_tag;
789 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
790
791 tei.task = task;
792 tei.hdr = &mvi->slot[tag];
793 tei.tag = tag;
794 tei.n_elem = n_elem;
795 switch (task->task_proto) {
796 case SAS_PROTOCOL_SMP:
797 rc = mvs_task_prep_smp(mvi, &tei);
798 break;
799 case SAS_PROTOCOL_SSP:
800 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
801 break;
802 case SAS_PROTOCOL_SATA:
803 case SAS_PROTOCOL_STP:
804 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
805 rc = mvs_task_prep_ata(mvi, &tei);
806 break;
807 default:
808 dev_printk(KERN_ERR, mvi->dev,
809 "unknown sas_task proto: 0x%x\n",
810 task->task_proto);
811 rc = -EINVAL;
812 break;
813 }
814
815 if (rc) {
816 mv_dprintk("rc is %x\n", rc);
817 goto err_out_slot_buf;
818 }
819 slot->task = task;
820 slot->port = tei.port;
821 task->lldd_task = slot;
822 list_add_tail(&slot->entry, &tei.port->list);
823 spin_lock(&task->task_state_lock);
824 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
825 spin_unlock(&task->task_state_lock);
826
827 mvi_dev->running_req++;
828 ++(*pass);
829 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
830
831 return rc;
832
833 err_out_slot_buf:
834 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
835 err_out_tag:
836 mvs_tag_free(mvi, tag);
837 err_out:
838
839 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
840 if (!sas_protocol_ata(task->task_proto))
841 if (n_elem)
842 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
843 task->data_dir);
844 prep_out:
845 return rc;
846 }
847
848 static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags)
849 {
850 struct mvs_task_list *first = NULL;
851
852 for (; *num > 0; --*num) {
853 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags);
854
855 if (!mvs_list)
856 break;
857
858 INIT_LIST_HEAD(&mvs_list->list);
859 if (!first)
860 first = mvs_list;
861 else
862 list_add_tail(&mvs_list->list, &first->list);
863
864 }
865
866 return first;
867 }
868
869 static inline void mvs_task_free_list(struct mvs_task_list *mvs_list)
870 {
871 LIST_HEAD(list);
872 struct list_head *pos, *a;
873 struct mvs_task_list *mlist = NULL;
874
875 __list_add(&list, mvs_list->list.prev, &mvs_list->list);
876
877 list_for_each_safe(pos, a, &list) {
878 list_del_init(pos);
879 mlist = list_entry(pos, struct mvs_task_list, list);
880 kmem_cache_free(mvs_task_list_cache, mlist);
881 }
882 }
883
884 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
885 struct completion *completion, int is_tmf,
886 struct mvs_tmf_task *tmf)
887 {
888 struct domain_device *dev = task->dev;
889 struct mvs_info *mvi = NULL;
890 u32 rc = 0;
891 u32 pass = 0;
892 unsigned long flags = 0;
893
894 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
895
896 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL))
897 spin_unlock_irq(dev->sata_dev.ap->lock);
898
899 spin_lock_irqsave(&mvi->lock, flags);
900 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
901 if (rc)
902 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
903
904 if (likely(pass))
905 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
906 (MVS_CHIP_SLOT_SZ - 1));
907 spin_unlock_irqrestore(&mvi->lock, flags);
908
909 if ((dev->dev_type == SATA_DEV) && (dev->sata_dev.ap != NULL))
910 spin_lock_irq(dev->sata_dev.ap->lock);
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_DEV)
1164 phy->identify.target_port_protocols =
1165 SAS_PROTOCOL_SSP;
1166 else if (phy->identify.device_type != NO_DEVICE)
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 == NO_DEVICE) {
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 = NO_DEVICE;
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->timer))
1375 return;
1376 complete(&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->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_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->timer.data = (unsigned long) task;
1406 task->timer.function = mvs_tmf_timedout;
1407 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1408 add_timer(&task->timer);
1409
1410 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1411
1412 if (res) {
1413 del_timer(&task->timer);
1414 mv_printk("executing internel task failed:%d\n", res);
1415 goto ex_err;
1416 }
1417
1418 wait_for_completion(&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_find_local_phy(dev);
1484 int reset_type = (dev->dev_type == SATA_DEV ||
1485 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1486 rc = sas_phy_reset(phy, reset_type);
1487 msleep(2000);
1488 return rc;
1489 }
1490
1491 /* mandatory SAM-3 */
1492 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1493 {
1494 unsigned long flags;
1495 int rc = TMF_RESP_FUNC_FAILED;
1496 struct mvs_tmf_task tmf_task;
1497 struct mvs_device * mvi_dev = dev->lldd_dev;
1498 struct mvs_info *mvi = mvi_dev->mvi_info;
1499
1500 tmf_task.tmf = TMF_LU_RESET;
1501 mvi_dev->dev_status = MVS_DEV_EH;
1502 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1503 if (rc == TMF_RESP_FUNC_COMPLETE) {
1504 spin_lock_irqsave(&mvi->lock, flags);
1505 mvs_release_task(mvi, dev);
1506 spin_unlock_irqrestore(&mvi->lock, flags);
1507 }
1508 /* If failed, fall-through I_T_Nexus reset */
1509 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1510 mvi_dev->device_id, rc);
1511 return rc;
1512 }
1513
1514 int mvs_I_T_nexus_reset(struct domain_device *dev)
1515 {
1516 unsigned long flags;
1517 int rc = TMF_RESP_FUNC_FAILED;
1518 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1519 struct mvs_info *mvi = mvi_dev->mvi_info;
1520
1521 if (mvi_dev->dev_status != MVS_DEV_EH)
1522 return TMF_RESP_FUNC_COMPLETE;
1523 else
1524 mvi_dev->dev_status = MVS_DEV_NORMAL;
1525 rc = mvs_debug_I_T_nexus_reset(dev);
1526 mv_printk("%s for device[%x]:rc= %d\n",
1527 __func__, mvi_dev->device_id, rc);
1528
1529 spin_lock_irqsave(&mvi->lock, flags);
1530 mvs_release_task(mvi, dev);
1531 spin_unlock_irqrestore(&mvi->lock, flags);
1532
1533 return rc;
1534 }
1535 /* optional SAM-3 */
1536 int mvs_query_task(struct sas_task *task)
1537 {
1538 u32 tag;
1539 struct scsi_lun lun;
1540 struct mvs_tmf_task tmf_task;
1541 int rc = TMF_RESP_FUNC_FAILED;
1542
1543 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1544 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1545 struct domain_device *dev = task->dev;
1546 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1547 struct mvs_info *mvi = mvi_dev->mvi_info;
1548
1549 int_to_scsilun(cmnd->device->lun, &lun);
1550 rc = mvs_find_tag(mvi, task, &tag);
1551 if (rc == 0) {
1552 rc = TMF_RESP_FUNC_FAILED;
1553 return rc;
1554 }
1555
1556 tmf_task.tmf = TMF_QUERY_TASK;
1557 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1558
1559 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1560 switch (rc) {
1561 /* The task is still in Lun, release it then */
1562 case TMF_RESP_FUNC_SUCC:
1563 /* The task is not in Lun or failed, reset the phy */
1564 case TMF_RESP_FUNC_FAILED:
1565 case TMF_RESP_FUNC_COMPLETE:
1566 break;
1567 }
1568 }
1569 mv_printk("%s:rc= %d\n", __func__, rc);
1570 return rc;
1571 }
1572
1573 /* mandatory SAM-3, still need free task/slot info */
1574 int mvs_abort_task(struct sas_task *task)
1575 {
1576 struct scsi_lun lun;
1577 struct mvs_tmf_task tmf_task;
1578 struct domain_device *dev = task->dev;
1579 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1580 struct mvs_info *mvi;
1581 int rc = TMF_RESP_FUNC_FAILED;
1582 unsigned long flags;
1583 u32 tag;
1584
1585 if (!mvi_dev) {
1586 mv_printk("Device has removed\n");
1587 return TMF_RESP_FUNC_FAILED;
1588 }
1589
1590 mvi = mvi_dev->mvi_info;
1591
1592 spin_lock_irqsave(&task->task_state_lock, flags);
1593 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1594 spin_unlock_irqrestore(&task->task_state_lock, flags);
1595 rc = TMF_RESP_FUNC_COMPLETE;
1596 goto out;
1597 }
1598 spin_unlock_irqrestore(&task->task_state_lock, flags);
1599 mvi_dev->dev_status = MVS_DEV_EH;
1600 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1601 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1602
1603 int_to_scsilun(cmnd->device->lun, &lun);
1604 rc = mvs_find_tag(mvi, task, &tag);
1605 if (rc == 0) {
1606 mv_printk("No such tag in %s\n", __func__);
1607 rc = TMF_RESP_FUNC_FAILED;
1608 return rc;
1609 }
1610
1611 tmf_task.tmf = TMF_ABORT_TASK;
1612 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1613
1614 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1615
1616 /* if successful, clear the task and callback forwards.*/
1617 if (rc == TMF_RESP_FUNC_COMPLETE) {
1618 u32 slot_no;
1619 struct mvs_slot_info *slot;
1620
1621 if (task->lldd_task) {
1622 slot = task->lldd_task;
1623 slot_no = (u32) (slot - mvi->slot_info);
1624 spin_lock_irqsave(&mvi->lock, flags);
1625 mvs_slot_complete(mvi, slot_no, 1);
1626 spin_unlock_irqrestore(&mvi->lock, flags);
1627 }
1628 }
1629
1630 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1631 task->task_proto & SAS_PROTOCOL_STP) {
1632 if (SATA_DEV == dev->dev_type) {
1633 struct mvs_slot_info *slot = task->lldd_task;
1634 u32 slot_idx = (u32)(slot - mvi->slot_info);
1635 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1636 "slot=%p slot_idx=x%x\n",
1637 mvi, task, slot, slot_idx);
1638 mvs_tmf_timedout((unsigned long)task);
1639 mvs_slot_task_free(mvi, task, slot, slot_idx);
1640 rc = TMF_RESP_FUNC_COMPLETE;
1641 goto out;
1642 }
1643
1644 }
1645 out:
1646 if (rc != TMF_RESP_FUNC_COMPLETE)
1647 mv_printk("%s:rc= %d\n", __func__, rc);
1648 return rc;
1649 }
1650
1651 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1652 {
1653 int rc = TMF_RESP_FUNC_FAILED;
1654 struct mvs_tmf_task tmf_task;
1655
1656 tmf_task.tmf = TMF_ABORT_TASK_SET;
1657 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1658
1659 return rc;
1660 }
1661
1662 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1663 {
1664 int rc = TMF_RESP_FUNC_FAILED;
1665 struct mvs_tmf_task tmf_task;
1666
1667 tmf_task.tmf = TMF_CLEAR_ACA;
1668 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1669
1670 return rc;
1671 }
1672
1673 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1674 {
1675 int rc = TMF_RESP_FUNC_FAILED;
1676 struct mvs_tmf_task tmf_task;
1677
1678 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1679 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1680
1681 return rc;
1682 }
1683
1684 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1685 u32 slot_idx, int err)
1686 {
1687 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1688 struct task_status_struct *tstat = &task->task_status;
1689 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1690 int stat = SAM_STAT_GOOD;
1691
1692
1693 resp->frame_len = sizeof(struct dev_to_host_fis);
1694 memcpy(&resp->ending_fis[0],
1695 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1696 sizeof(struct dev_to_host_fis));
1697 tstat->buf_valid_size = sizeof(*resp);
1698 if (unlikely(err)) {
1699 if (unlikely(err & CMD_ISS_STPD))
1700 stat = SAS_OPEN_REJECT;
1701 else
1702 stat = SAS_PROTO_RESPONSE;
1703 }
1704
1705 return stat;
1706 }
1707
1708 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1709 int key, int asc, int ascq)
1710 {
1711 memset(buffer, 0, len);
1712
1713 if (d_sense) {
1714 /* Descriptor format */
1715 if (len < 4) {
1716 mv_printk("Length %d of sense buffer too small to "
1717 "fit sense %x:%x:%x", len, key, asc, ascq);
1718 }
1719
1720 buffer[0] = 0x72; /* Response Code */
1721 if (len > 1)
1722 buffer[1] = key; /* Sense Key */
1723 if (len > 2)
1724 buffer[2] = asc; /* ASC */
1725 if (len > 3)
1726 buffer[3] = ascq; /* ASCQ */
1727 } else {
1728 if (len < 14) {
1729 mv_printk("Length %d of sense buffer too small to "
1730 "fit sense %x:%x:%x", len, key, asc, ascq);
1731 }
1732
1733 buffer[0] = 0x70; /* Response Code */
1734 if (len > 2)
1735 buffer[2] = key; /* Sense Key */
1736 if (len > 7)
1737 buffer[7] = 0x0a; /* Additional Sense Length */
1738 if (len > 12)
1739 buffer[12] = asc; /* ASC */
1740 if (len > 13)
1741 buffer[13] = ascq; /* ASCQ */
1742 }
1743
1744 return;
1745 }
1746
1747 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1748 u8 key, u8 asc, u8 asc_q)
1749 {
1750 iu->datapres = 2;
1751 iu->response_data_len = 0;
1752 iu->sense_data_len = 17;
1753 iu->status = 02;
1754 mvs_set_sense(iu->sense_data, 17, 0,
1755 key, asc, asc_q);
1756 }
1757
1758 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1759 u32 slot_idx)
1760 {
1761 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1762 int stat;
1763 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1764 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1765 u32 tfs = 0;
1766 enum mvs_port_type type = PORT_TYPE_SAS;
1767
1768 if (err_dw0 & CMD_ISS_STPD)
1769 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1770
1771 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1772
1773 stat = SAM_STAT_CHECK_CONDITION;
1774 switch (task->task_proto) {
1775 case SAS_PROTOCOL_SSP:
1776 {
1777 stat = SAS_ABORTED_TASK;
1778 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1779 struct ssp_response_iu *iu = slot->response +
1780 sizeof(struct mvs_err_info);
1781 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1782 sas_ssp_task_response(mvi->dev, task, iu);
1783 stat = SAM_STAT_CHECK_CONDITION;
1784 }
1785 if (err_dw1 & bit(31))
1786 mv_printk("reuse same slot, retry command.\n");
1787 break;
1788 }
1789 case SAS_PROTOCOL_SMP:
1790 stat = SAM_STAT_CHECK_CONDITION;
1791 break;
1792
1793 case SAS_PROTOCOL_SATA:
1794 case SAS_PROTOCOL_STP:
1795 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1796 {
1797 task->ata_task.use_ncq = 0;
1798 stat = SAS_PROTO_RESPONSE;
1799 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1800 }
1801 break;
1802 default:
1803 break;
1804 }
1805
1806 return stat;
1807 }
1808
1809 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1810 {
1811 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1812 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1813 struct sas_task *task = slot->task;
1814 struct mvs_device *mvi_dev = NULL;
1815 struct task_status_struct *tstat;
1816 struct domain_device *dev;
1817 u32 aborted;
1818
1819 void *to;
1820 enum exec_status sts;
1821
1822 if (unlikely(!task || !task->lldd_task || !task->dev))
1823 return -1;
1824
1825 tstat = &task->task_status;
1826 dev = task->dev;
1827 mvi_dev = dev->lldd_dev;
1828
1829 spin_lock(&task->task_state_lock);
1830 task->task_state_flags &=
1831 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1832 task->task_state_flags |= SAS_TASK_STATE_DONE;
1833 /* race condition*/
1834 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1835 spin_unlock(&task->task_state_lock);
1836
1837 memset(tstat, 0, sizeof(*tstat));
1838 tstat->resp = SAS_TASK_COMPLETE;
1839
1840 if (unlikely(aborted)) {
1841 tstat->stat = SAS_ABORTED_TASK;
1842 if (mvi_dev && mvi_dev->running_req)
1843 mvi_dev->running_req--;
1844 if (sas_protocol_ata(task->task_proto))
1845 mvs_free_reg_set(mvi, mvi_dev);
1846
1847 mvs_slot_task_free(mvi, task, slot, slot_idx);
1848 return -1;
1849 }
1850
1851 /* when no device attaching, go ahead and complete by error handling*/
1852 if (unlikely(!mvi_dev || flags)) {
1853 if (!mvi_dev)
1854 mv_dprintk("port has not device.\n");
1855 tstat->stat = SAS_PHY_DOWN;
1856 goto out;
1857 }
1858
1859 /* error info record present */
1860 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1861 mv_dprintk("port %d slot %d rx_desc %X has error info"
1862 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1863 rx_desc, (u64)(*(u64 *)slot->response));
1864 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1865 tstat->resp = SAS_TASK_COMPLETE;
1866 goto out;
1867 }
1868
1869 switch (task->task_proto) {
1870 case SAS_PROTOCOL_SSP:
1871 /* hw says status == 0, datapres == 0 */
1872 if (rx_desc & RXQ_GOOD) {
1873 tstat->stat = SAM_STAT_GOOD;
1874 tstat->resp = SAS_TASK_COMPLETE;
1875 }
1876 /* response frame present */
1877 else if (rx_desc & RXQ_RSP) {
1878 struct ssp_response_iu *iu = slot->response +
1879 sizeof(struct mvs_err_info);
1880 sas_ssp_task_response(mvi->dev, task, iu);
1881 } else
1882 tstat->stat = SAM_STAT_CHECK_CONDITION;
1883 break;
1884
1885 case SAS_PROTOCOL_SMP: {
1886 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1887 tstat->stat = SAM_STAT_GOOD;
1888 to = kmap_atomic(sg_page(sg_resp), KM_IRQ0);
1889 memcpy(to + sg_resp->offset,
1890 slot->response + sizeof(struct mvs_err_info),
1891 sg_dma_len(sg_resp));
1892 kunmap_atomic(to, KM_IRQ0);
1893 break;
1894 }
1895
1896 case SAS_PROTOCOL_SATA:
1897 case SAS_PROTOCOL_STP:
1898 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1899 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1900 break;
1901 }
1902
1903 default:
1904 tstat->stat = SAM_STAT_CHECK_CONDITION;
1905 break;
1906 }
1907 if (!slot->port->port_attached) {
1908 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1909 tstat->stat = SAS_PHY_DOWN;
1910 }
1911
1912
1913 out:
1914 if (mvi_dev && mvi_dev->running_req) {
1915 mvi_dev->running_req--;
1916 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1917 mvs_free_reg_set(mvi, mvi_dev);
1918 }
1919 mvs_slot_task_free(mvi, task, slot, slot_idx);
1920 sts = tstat->stat;
1921
1922 spin_unlock(&mvi->lock);
1923 if (task->task_done)
1924 task->task_done(task);
1925
1926 spin_lock(&mvi->lock);
1927
1928 return sts;
1929 }
1930
1931 void mvs_do_release_task(struct mvs_info *mvi,
1932 int phy_no, struct domain_device *dev)
1933 {
1934 u32 slot_idx;
1935 struct mvs_phy *phy;
1936 struct mvs_port *port;
1937 struct mvs_slot_info *slot, *slot2;
1938
1939 phy = &mvi->phy[phy_no];
1940 port = phy->port;
1941 if (!port)
1942 return;
1943 /* clean cmpl queue in case request is already finished */
1944 mvs_int_rx(mvi, false);
1945
1946
1947
1948 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1949 struct sas_task *task;
1950 slot_idx = (u32) (slot - mvi->slot_info);
1951 task = slot->task;
1952
1953 if (dev && task->dev != dev)
1954 continue;
1955
1956 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1957 slot_idx, slot->slot_tag, task);
1958 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1959
1960 mvs_slot_complete(mvi, slot_idx, 1);
1961 }
1962 }
1963
1964 void mvs_release_task(struct mvs_info *mvi,
1965 struct domain_device *dev)
1966 {
1967 int i, phyno[WIDE_PORT_MAX_PHY], num;
1968 num = mvs_find_dev_phyno(dev, phyno);
1969 for (i = 0; i < num; i++)
1970 mvs_do_release_task(mvi, phyno[i], dev);
1971 }
1972
1973 static void mvs_phy_disconnected(struct mvs_phy *phy)
1974 {
1975 phy->phy_attached = 0;
1976 phy->att_dev_info = 0;
1977 phy->att_dev_sas_addr = 0;
1978 }
1979
1980 static void mvs_work_queue(struct work_struct *work)
1981 {
1982 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1983 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1984 struct mvs_info *mvi = mwq->mvi;
1985 unsigned long flags;
1986 u32 phy_no = (unsigned long) mwq->data;
1987 struct sas_ha_struct *sas_ha = mvi->sas;
1988 struct mvs_phy *phy = &mvi->phy[phy_no];
1989 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1990
1991 spin_lock_irqsave(&mvi->lock, flags);
1992 if (mwq->handler & PHY_PLUG_EVENT) {
1993
1994 if (phy->phy_event & PHY_PLUG_OUT) {
1995 u32 tmp;
1996 struct sas_identify_frame *id;
1997 id = (struct sas_identify_frame *)phy->frame_rcvd;
1998 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1999 phy->phy_event &= ~PHY_PLUG_OUT;
2000 if (!(tmp & PHY_READY_MASK)) {
2001 sas_phy_disconnected(sas_phy);
2002 mvs_phy_disconnected(phy);
2003 sas_ha->notify_phy_event(sas_phy,
2004 PHYE_LOSS_OF_SIGNAL);
2005 mv_dprintk("phy%d Removed Device\n", phy_no);
2006 } else {
2007 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2008 mvs_update_phyinfo(mvi, phy_no, 1);
2009 mvs_bytes_dmaed(mvi, phy_no);
2010 mvs_port_notify_formed(sas_phy, 0);
2011 mv_dprintk("phy%d Attached Device\n", phy_no);
2012 }
2013 }
2014 } else if (mwq->handler & EXP_BRCT_CHG) {
2015 phy->phy_event &= ~EXP_BRCT_CHG;
2016 sas_ha->notify_port_event(sas_phy,
2017 PORTE_BROADCAST_RCVD);
2018 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
2019 }
2020 list_del(&mwq->entry);
2021 spin_unlock_irqrestore(&mvi->lock, flags);
2022 kfree(mwq);
2023 }
2024
2025 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2026 {
2027 struct mvs_wq *mwq;
2028 int ret = 0;
2029
2030 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2031 if (mwq) {
2032 mwq->mvi = mvi;
2033 mwq->data = data;
2034 mwq->handler = handler;
2035 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2036 list_add_tail(&mwq->entry, &mvi->wq_list);
2037 schedule_delayed_work(&mwq->work_q, HZ * 2);
2038 } else
2039 ret = -ENOMEM;
2040
2041 return ret;
2042 }
2043
2044 static void mvs_sig_time_out(unsigned long tphy)
2045 {
2046 struct mvs_phy *phy = (struct mvs_phy *)tphy;
2047 struct mvs_info *mvi = phy->mvi;
2048 u8 phy_no;
2049
2050 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2051 if (&mvi->phy[phy_no] == phy) {
2052 mv_dprintk("Get signature time out, reset phy %d\n",
2053 phy_no+mvi->id*mvi->chip->n_phy);
2054 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
2055 }
2056 }
2057 }
2058
2059 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2060 {
2061 u32 tmp;
2062 struct mvs_phy *phy = &mvi->phy[phy_no];
2063
2064 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2065 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2066 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2067 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2068 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
2069 phy->irq_status);
2070
2071 /*
2072 * events is port event now ,
2073 * we need check the interrupt status which belongs to per port.
2074 */
2075
2076 if (phy->irq_status & PHYEV_DCDR_ERR) {
2077 mv_dprintk("phy %d STP decoding error.\n",
2078 phy_no + mvi->id*mvi->chip->n_phy);
2079 }
2080
2081 if (phy->irq_status & PHYEV_POOF) {
2082 mdelay(500);
2083 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2084 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2085 int ready;
2086 mvs_do_release_task(mvi, phy_no, NULL);
2087 phy->phy_event |= PHY_PLUG_OUT;
2088 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2089 mvs_handle_event(mvi,
2090 (void *)(unsigned long)phy_no,
2091 PHY_PLUG_EVENT);
2092 ready = mvs_is_phy_ready(mvi, phy_no);
2093 if (ready || dev_sata) {
2094 if (MVS_CHIP_DISP->stp_reset)
2095 MVS_CHIP_DISP->stp_reset(mvi,
2096 phy_no);
2097 else
2098 MVS_CHIP_DISP->phy_reset(mvi,
2099 phy_no, MVS_SOFT_RESET);
2100 return;
2101 }
2102 }
2103 }
2104
2105 if (phy->irq_status & PHYEV_COMWAKE) {
2106 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2107 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2108 tmp | PHYEV_SIG_FIS);
2109 if (phy->timer.function == NULL) {
2110 phy->timer.data = (unsigned long)phy;
2111 phy->timer.function = mvs_sig_time_out;
2112 phy->timer.expires = jiffies + 5*HZ;
2113 add_timer(&phy->timer);
2114 }
2115 }
2116 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2117 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2118 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2119 if (phy->phy_status) {
2120 mdelay(10);
2121 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2122 if (phy->phy_type & PORT_TYPE_SATA) {
2123 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2124 mvi, phy_no);
2125 tmp &= ~PHYEV_SIG_FIS;
2126 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2127 phy_no, tmp);
2128 }
2129 mvs_update_phyinfo(mvi, phy_no, 0);
2130 if (phy->phy_type & PORT_TYPE_SAS) {
2131 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2132 mdelay(10);
2133 }
2134
2135 mvs_bytes_dmaed(mvi, phy_no);
2136 /* whether driver is going to handle hot plug */
2137 if (phy->phy_event & PHY_PLUG_OUT) {
2138 mvs_port_notify_formed(&phy->sas_phy, 0);
2139 phy->phy_event &= ~PHY_PLUG_OUT;
2140 }
2141 } else {
2142 mv_dprintk("plugin interrupt but phy%d is gone\n",
2143 phy_no + mvi->id*mvi->chip->n_phy);
2144 }
2145 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2146 mv_dprintk("phy %d broadcast change.\n",
2147 phy_no + mvi->id*mvi->chip->n_phy);
2148 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2149 EXP_BRCT_CHG);
2150 }
2151 }
2152
2153 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2154 {
2155 u32 rx_prod_idx, rx_desc;
2156 bool attn = false;
2157
2158 /* the first dword in the RX ring is special: it contains
2159 * a mirror of the hardware's RX producer index, so that
2160 * we don't have to stall the CPU reading that register.
2161 * The actual RX ring is offset by one dword, due to this.
2162 */
2163 rx_prod_idx = mvi->rx_cons;
2164 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2165 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2166 return 0;
2167
2168 /* The CMPL_Q may come late, read from register and try again
2169 * note: if coalescing is enabled,
2170 * it will need to read from register every time for sure
2171 */
2172 if (unlikely(mvi->rx_cons == rx_prod_idx))
2173 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2174
2175 if (mvi->rx_cons == rx_prod_idx)
2176 return 0;
2177
2178 while (mvi->rx_cons != rx_prod_idx) {
2179 /* increment our internal RX consumer pointer */
2180 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2181 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2182
2183 if (likely(rx_desc & RXQ_DONE))
2184 mvs_slot_complete(mvi, rx_desc, 0);
2185 if (rx_desc & RXQ_ATTN) {
2186 attn = true;
2187 } else if (rx_desc & RXQ_ERR) {
2188 if (!(rx_desc & RXQ_DONE))
2189 mvs_slot_complete(mvi, rx_desc, 0);
2190 } else if (rx_desc & RXQ_SLOT_RESET) {
2191 mvs_slot_free(mvi, rx_desc);
2192 }
2193 }
2194
2195 if (attn && self_clear)
2196 MVS_CHIP_DISP->int_full(mvi);
2197 return 0;
2198 }
2199
Linux with added FPC-III support