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
mvs_find_tag(struct mvs_info * mvi,struct sas_task * task,u32 * tag)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
mvs_tag_clear(struct mvs_info * mvi,u32 tag)39 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
40 {
41 void *bitmap = mvi->tags;
42 clear_bit(tag, bitmap);
43 }
44
mvs_tag_free(struct mvs_info * mvi,u32 tag)45 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
46 {
47 mvs_tag_clear(mvi, tag);
48 }
49
mvs_tag_set(struct mvs_info * mvi,unsigned int tag)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
mvs_tag_alloc(struct mvs_info * mvi,u32 * tag_out)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
mvs_tag_init(struct mvs_info * mvi)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
mvs_find_dev_mvi(struct domain_device * dev)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
mvs_find_dev_phyno(struct domain_device * dev,int * phyno)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
mvs_find_dev_by_reg_set(struct mvs_info * mvi,u8 reg_set)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
mvs_free_reg_set(struct mvs_info * mvi,struct mvs_device * dev)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
mvs_assign_reg_set(struct mvs_info * mvi,struct mvs_device * dev)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
mvs_phys_reset(struct mvs_info * mvi,u32 phy_mask,int hard)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
mvs_phy_control(struct asd_sas_phy * sas_phy,enum phy_func func,void * funcdata)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
mvs_set_sas_addr(struct mvs_info * mvi,int port_id,u32 off_lo,u32 off_hi,u64 sas_addr)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
mvs_bytes_dmaed(struct mvs_info * mvi,int i)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
mvs_scan_start(struct Scsi_Host * shost)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
mvs_scan_finished(struct Scsi_Host * shost,unsigned long time)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
mvs_task_prep_smp(struct mvs_info * mvi,struct mvs_task_exec_info * tei)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
mvs_get_ncq_tag(struct sas_task * task,u32 * tag)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
mvs_task_prep_ata(struct mvs_info * mvi,struct mvs_task_exec_info * tei)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
mvs_task_prep_ssp(struct mvs_info * mvi,struct mvs_task_exec_info * tei,int is_tmf,struct mvs_tmf_task * tmf)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)))
mvs_task_prep(struct sas_task * task,struct mvs_info * mvi,int is_tmf,struct mvs_tmf_task * tmf,int * pass)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
mvs_task_alloc_list(int * num,gfp_t gfp_flags)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
mvs_task_free_list(struct mvs_task_list * mvs_list)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
mvs_task_exec(struct sas_task * task,const int num,gfp_t gfp_flags,struct completion * completion,int is_tmf,struct mvs_tmf_task * tmf)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 mvs_info *mvi = NULL;
889 u32 rc = 0;
890 u32 pass = 0;
891 unsigned long flags = 0;
892
893 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
894
895 spin_lock_irqsave(&mvi->lock, flags);
896 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
897 if (rc)
898 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
899
900 if (likely(pass))
901 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
902 (MVS_CHIP_SLOT_SZ - 1));
903 spin_unlock_irqrestore(&mvi->lock, flags);
904
905 return rc;
906 }
907
mvs_collector_task_exec(struct sas_task * task,const int num,gfp_t gfp_flags,struct completion * completion,int is_tmf,struct mvs_tmf_task * tmf)908 static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
909 struct completion *completion, int is_tmf,
910 struct mvs_tmf_task *tmf)
911 {
912 struct domain_device *dev = task->dev;
913 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha;
914 struct mvs_info *mvi = NULL;
915 struct sas_task *t = task;
916 struct mvs_task_list *mvs_list = NULL, *a;
917 LIST_HEAD(q);
918 int pass[2] = {0};
919 u32 rc = 0;
920 u32 n = num;
921 unsigned long flags = 0;
922
923 mvs_list = mvs_task_alloc_list(&n, gfp_flags);
924 if (n) {
925 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__);
926 rc = -ENOMEM;
927 goto free_list;
928 }
929
930 __list_add(&q, mvs_list->list.prev, &mvs_list->list);
931
932 list_for_each_entry(a, &q, list) {
933 a->task = t;
934 t = list_entry(t->list.next, struct sas_task, list);
935 }
936
937 list_for_each_entry(a, &q , list) {
938
939 t = a->task;
940 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info;
941
942 spin_lock_irqsave(&mvi->lock, flags);
943 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]);
944 if (rc)
945 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
946 spin_unlock_irqrestore(&mvi->lock, flags);
947 }
948
949 if (likely(pass[0]))
950 MVS_CHIP_DISP->start_delivery(mpi->mvi[0],
951 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
952
953 if (likely(pass[1]))
954 MVS_CHIP_DISP->start_delivery(mpi->mvi[1],
955 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
956
957 list_del_init(&q);
958
959 free_list:
960 if (mvs_list)
961 mvs_task_free_list(mvs_list);
962
963 return rc;
964 }
965
mvs_queue_command(struct sas_task * task,const int num,gfp_t gfp_flags)966 int mvs_queue_command(struct sas_task *task, const int num,
967 gfp_t gfp_flags)
968 {
969 struct mvs_device *mvi_dev = task->dev->lldd_dev;
970 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas;
971
972 if (sas->lldd_max_execute_num < 2)
973 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL);
974 else
975 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL);
976 }
977
mvs_slot_free(struct mvs_info * mvi,u32 rx_desc)978 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
979 {
980 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
981 mvs_tag_clear(mvi, slot_idx);
982 }
983
mvs_slot_task_free(struct mvs_info * mvi,struct sas_task * task,struct mvs_slot_info * slot,u32 slot_idx)984 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
985 struct mvs_slot_info *slot, u32 slot_idx)
986 {
987 if (!slot->task)
988 return;
989 if (!sas_protocol_ata(task->task_proto))
990 if (slot->n_elem)
991 dma_unmap_sg(mvi->dev, task->scatter,
992 slot->n_elem, task->data_dir);
993
994 switch (task->task_proto) {
995 case SAS_PROTOCOL_SMP:
996 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
997 PCI_DMA_FROMDEVICE);
998 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
999 PCI_DMA_TODEVICE);
1000 break;
1001
1002 case SAS_PROTOCOL_SATA:
1003 case SAS_PROTOCOL_STP:
1004 case SAS_PROTOCOL_SSP:
1005 default:
1006 /* do nothing */
1007 break;
1008 }
1009
1010 if (slot->buf) {
1011 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
1012 slot->buf = NULL;
1013 }
1014 list_del_init(&slot->entry);
1015 task->lldd_task = NULL;
1016 slot->task = NULL;
1017 slot->port = NULL;
1018 slot->slot_tag = 0xFFFFFFFF;
1019 mvs_slot_free(mvi, slot_idx);
1020 }
1021
mvs_update_wideport(struct mvs_info * mvi,int phy_no)1022 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
1023 {
1024 struct mvs_phy *phy = &mvi->phy[phy_no];
1025 struct mvs_port *port = phy->port;
1026 int j, no;
1027
1028 for_each_phy(port->wide_port_phymap, j, no) {
1029 if (j & 1) {
1030 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1031 PHYR_WIDE_PORT);
1032 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1033 port->wide_port_phymap);
1034 } else {
1035 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1036 PHYR_WIDE_PORT);
1037 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1038 0);
1039 }
1040 }
1041 }
1042
mvs_is_phy_ready(struct mvs_info * mvi,int i)1043 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
1044 {
1045 u32 tmp;
1046 struct mvs_phy *phy = &mvi->phy[i];
1047 struct mvs_port *port = phy->port;
1048
1049 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
1050 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
1051 if (!port)
1052 phy->phy_attached = 1;
1053 return tmp;
1054 }
1055
1056 if (port) {
1057 if (phy->phy_type & PORT_TYPE_SAS) {
1058 port->wide_port_phymap &= ~(1U << i);
1059 if (!port->wide_port_phymap)
1060 port->port_attached = 0;
1061 mvs_update_wideport(mvi, i);
1062 } else if (phy->phy_type & PORT_TYPE_SATA)
1063 port->port_attached = 0;
1064 phy->port = NULL;
1065 phy->phy_attached = 0;
1066 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1067 }
1068 return 0;
1069 }
1070
mvs_get_d2h_reg(struct mvs_info * mvi,int i,void * buf)1071 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
1072 {
1073 u32 *s = (u32 *) buf;
1074
1075 if (!s)
1076 return NULL;
1077
1078 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
1079 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1080
1081 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
1082 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1083
1084 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
1085 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1086
1087 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
1088 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1089
1090 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
1091 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1092
1093 return s;
1094 }
1095
mvs_is_sig_fis_received(u32 irq_status)1096 static u32 mvs_is_sig_fis_received(u32 irq_status)
1097 {
1098 return irq_status & PHYEV_SIG_FIS;
1099 }
1100
mvs_sig_remove_timer(struct mvs_phy * phy)1101 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1102 {
1103 if (phy->timer.function)
1104 del_timer(&phy->timer);
1105 phy->timer.function = NULL;
1106 }
1107
mvs_update_phyinfo(struct mvs_info * mvi,int i,int get_st)1108 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1109 {
1110 struct mvs_phy *phy = &mvi->phy[i];
1111 struct sas_identify_frame *id;
1112
1113 id = (struct sas_identify_frame *)phy->frame_rcvd;
1114
1115 if (get_st) {
1116 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1117 phy->phy_status = mvs_is_phy_ready(mvi, i);
1118 }
1119
1120 if (phy->phy_status) {
1121 int oob_done = 0;
1122 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1123
1124 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1125
1126 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1127 if (phy->phy_type & PORT_TYPE_SATA) {
1128 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1129 if (mvs_is_sig_fis_received(phy->irq_status)) {
1130 mvs_sig_remove_timer(phy);
1131 phy->phy_attached = 1;
1132 phy->att_dev_sas_addr =
1133 i + mvi->id * mvi->chip->n_phy;
1134 if (oob_done)
1135 sas_phy->oob_mode = SATA_OOB_MODE;
1136 phy->frame_rcvd_size =
1137 sizeof(struct dev_to_host_fis);
1138 mvs_get_d2h_reg(mvi, i, id);
1139 } else {
1140 u32 tmp;
1141 dev_printk(KERN_DEBUG, mvi->dev,
1142 "Phy%d : No sig fis\n", i);
1143 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1144 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1145 tmp | PHYEV_SIG_FIS);
1146 phy->phy_attached = 0;
1147 phy->phy_type &= ~PORT_TYPE_SATA;
1148 goto out_done;
1149 }
1150 } else if (phy->phy_type & PORT_TYPE_SAS
1151 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1152 phy->phy_attached = 1;
1153 phy->identify.device_type =
1154 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1155
1156 if (phy->identify.device_type == SAS_END_DEV)
1157 phy->identify.target_port_protocols =
1158 SAS_PROTOCOL_SSP;
1159 else if (phy->identify.device_type != NO_DEVICE)
1160 phy->identify.target_port_protocols =
1161 SAS_PROTOCOL_SMP;
1162 if (oob_done)
1163 sas_phy->oob_mode = SAS_OOB_MODE;
1164 phy->frame_rcvd_size =
1165 sizeof(struct sas_identify_frame);
1166 }
1167 memcpy(sas_phy->attached_sas_addr,
1168 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1169
1170 if (MVS_CHIP_DISP->phy_work_around)
1171 MVS_CHIP_DISP->phy_work_around(mvi, i);
1172 }
1173 mv_dprintk("phy %d attach dev info is %x\n",
1174 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1175 mv_dprintk("phy %d attach sas addr is %llx\n",
1176 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1177 out_done:
1178 if (get_st)
1179 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1180 }
1181
mvs_port_notify_formed(struct asd_sas_phy * sas_phy,int lock)1182 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1183 {
1184 struct sas_ha_struct *sas_ha = sas_phy->ha;
1185 struct mvs_info *mvi = NULL; int i = 0, hi;
1186 struct mvs_phy *phy = sas_phy->lldd_phy;
1187 struct asd_sas_port *sas_port = sas_phy->port;
1188 struct mvs_port *port;
1189 unsigned long flags = 0;
1190 if (!sas_port)
1191 return;
1192
1193 while (sas_ha->sas_phy[i]) {
1194 if (sas_ha->sas_phy[i] == sas_phy)
1195 break;
1196 i++;
1197 }
1198 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1199 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1200 if (i >= mvi->chip->n_phy)
1201 port = &mvi->port[i - mvi->chip->n_phy];
1202 else
1203 port = &mvi->port[i];
1204 if (lock)
1205 spin_lock_irqsave(&mvi->lock, flags);
1206 port->port_attached = 1;
1207 phy->port = port;
1208 sas_port->lldd_port = port;
1209 if (phy->phy_type & PORT_TYPE_SAS) {
1210 port->wide_port_phymap = sas_port->phy_mask;
1211 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1212 mvs_update_wideport(mvi, sas_phy->id);
1213
1214 /* direct attached SAS device */
1215 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1216 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1217 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1218 }
1219 }
1220 if (lock)
1221 spin_unlock_irqrestore(&mvi->lock, flags);
1222 }
1223
mvs_port_notify_deformed(struct asd_sas_phy * sas_phy,int lock)1224 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1225 {
1226 struct domain_device *dev;
1227 struct mvs_phy *phy = sas_phy->lldd_phy;
1228 struct mvs_info *mvi = phy->mvi;
1229 struct asd_sas_port *port = sas_phy->port;
1230 int phy_no = 0;
1231
1232 while (phy != &mvi->phy[phy_no]) {
1233 phy_no++;
1234 if (phy_no >= MVS_MAX_PHYS)
1235 return;
1236 }
1237 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1238 mvs_do_release_task(phy->mvi, phy_no, dev);
1239
1240 }
1241
1242
mvs_port_formed(struct asd_sas_phy * sas_phy)1243 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1244 {
1245 mvs_port_notify_formed(sas_phy, 1);
1246 }
1247
mvs_port_deformed(struct asd_sas_phy * sas_phy)1248 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1249 {
1250 mvs_port_notify_deformed(sas_phy, 1);
1251 }
1252
mvs_alloc_dev(struct mvs_info * mvi)1253 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1254 {
1255 u32 dev;
1256 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1257 if (mvi->devices[dev].dev_type == NO_DEVICE) {
1258 mvi->devices[dev].device_id = dev;
1259 return &mvi->devices[dev];
1260 }
1261 }
1262
1263 if (dev == MVS_MAX_DEVICES)
1264 mv_printk("max support %d devices, ignore ..\n",
1265 MVS_MAX_DEVICES);
1266
1267 return NULL;
1268 }
1269
mvs_free_dev(struct mvs_device * mvi_dev)1270 void mvs_free_dev(struct mvs_device *mvi_dev)
1271 {
1272 u32 id = mvi_dev->device_id;
1273 memset(mvi_dev, 0, sizeof(*mvi_dev));
1274 mvi_dev->device_id = id;
1275 mvi_dev->dev_type = NO_DEVICE;
1276 mvi_dev->dev_status = MVS_DEV_NORMAL;
1277 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1278 }
1279
mvs_dev_found_notify(struct domain_device * dev,int lock)1280 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1281 {
1282 unsigned long flags = 0;
1283 int res = 0;
1284 struct mvs_info *mvi = NULL;
1285 struct domain_device *parent_dev = dev->parent;
1286 struct mvs_device *mvi_device;
1287
1288 mvi = mvs_find_dev_mvi(dev);
1289
1290 if (lock)
1291 spin_lock_irqsave(&mvi->lock, flags);
1292
1293 mvi_device = mvs_alloc_dev(mvi);
1294 if (!mvi_device) {
1295 res = -1;
1296 goto found_out;
1297 }
1298 dev->lldd_dev = mvi_device;
1299 mvi_device->dev_status = MVS_DEV_NORMAL;
1300 mvi_device->dev_type = dev->dev_type;
1301 mvi_device->mvi_info = mvi;
1302 mvi_device->sas_device = dev;
1303 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1304 int phy_id;
1305 u8 phy_num = parent_dev->ex_dev.num_phys;
1306 struct ex_phy *phy;
1307 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1308 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1309 if (SAS_ADDR(phy->attached_sas_addr) ==
1310 SAS_ADDR(dev->sas_addr)) {
1311 mvi_device->attached_phy = phy_id;
1312 break;
1313 }
1314 }
1315
1316 if (phy_id == phy_num) {
1317 mv_printk("Error: no attached dev:%016llx"
1318 "at ex:%016llx.\n",
1319 SAS_ADDR(dev->sas_addr),
1320 SAS_ADDR(parent_dev->sas_addr));
1321 res = -1;
1322 }
1323 }
1324
1325 found_out:
1326 if (lock)
1327 spin_unlock_irqrestore(&mvi->lock, flags);
1328 return res;
1329 }
1330
mvs_dev_found(struct domain_device * dev)1331 int mvs_dev_found(struct domain_device *dev)
1332 {
1333 return mvs_dev_found_notify(dev, 1);
1334 }
1335
mvs_dev_gone_notify(struct domain_device * dev)1336 void mvs_dev_gone_notify(struct domain_device *dev)
1337 {
1338 unsigned long flags = 0;
1339 struct mvs_device *mvi_dev = dev->lldd_dev;
1340 struct mvs_info *mvi = mvi_dev->mvi_info;
1341
1342 spin_lock_irqsave(&mvi->lock, flags);
1343
1344 if (mvi_dev) {
1345 mv_dprintk("found dev[%d:%x] is gone.\n",
1346 mvi_dev->device_id, mvi_dev->dev_type);
1347 mvs_release_task(mvi, dev);
1348 mvs_free_reg_set(mvi, mvi_dev);
1349 mvs_free_dev(mvi_dev);
1350 } else {
1351 mv_dprintk("found dev has gone.\n");
1352 }
1353 dev->lldd_dev = NULL;
1354 mvi_dev->sas_device = NULL;
1355
1356 spin_unlock_irqrestore(&mvi->lock, flags);
1357 }
1358
1359
mvs_dev_gone(struct domain_device * dev)1360 void mvs_dev_gone(struct domain_device *dev)
1361 {
1362 mvs_dev_gone_notify(dev);
1363 }
1364
mvs_task_done(struct sas_task * task)1365 static void mvs_task_done(struct sas_task *task)
1366 {
1367 if (!del_timer(&task->timer))
1368 return;
1369 complete(&task->completion);
1370 }
1371
mvs_tmf_timedout(unsigned long data)1372 static void mvs_tmf_timedout(unsigned long data)
1373 {
1374 struct sas_task *task = (struct sas_task *)data;
1375
1376 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1377 complete(&task->completion);
1378 }
1379
1380 #define MVS_TASK_TIMEOUT 20
mvs_exec_internal_tmf_task(struct domain_device * dev,void * parameter,u32 para_len,struct mvs_tmf_task * tmf)1381 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1382 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1383 {
1384 int res, retry;
1385 struct sas_task *task = NULL;
1386
1387 for (retry = 0; retry < 3; retry++) {
1388 task = sas_alloc_task(GFP_KERNEL);
1389 if (!task)
1390 return -ENOMEM;
1391
1392 task->dev = dev;
1393 task->task_proto = dev->tproto;
1394
1395 memcpy(&task->ssp_task, parameter, para_len);
1396 task->task_done = mvs_task_done;
1397
1398 task->timer.data = (unsigned long) task;
1399 task->timer.function = mvs_tmf_timedout;
1400 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1401 add_timer(&task->timer);
1402
1403 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1404
1405 if (res) {
1406 del_timer(&task->timer);
1407 mv_printk("executing internel task failed:%d\n", res);
1408 goto ex_err;
1409 }
1410
1411 wait_for_completion(&task->completion);
1412 res = TMF_RESP_FUNC_FAILED;
1413 /* Even TMF timed out, return direct. */
1414 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1415 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1416 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1417 goto ex_err;
1418 }
1419 }
1420
1421 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1422 task->task_status.stat == SAM_STAT_GOOD) {
1423 res = TMF_RESP_FUNC_COMPLETE;
1424 break;
1425 }
1426
1427 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1428 task->task_status.stat == SAS_DATA_UNDERRUN) {
1429 /* no error, but return the number of bytes of
1430 * underrun */
1431 res = task->task_status.residual;
1432 break;
1433 }
1434
1435 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1436 task->task_status.stat == SAS_DATA_OVERRUN) {
1437 mv_dprintk("blocked task error.\n");
1438 res = -EMSGSIZE;
1439 break;
1440 } else {
1441 mv_dprintk(" task to dev %016llx response: 0x%x "
1442 "status 0x%x\n",
1443 SAS_ADDR(dev->sas_addr),
1444 task->task_status.resp,
1445 task->task_status.stat);
1446 sas_free_task(task);
1447 task = NULL;
1448
1449 }
1450 }
1451 ex_err:
1452 BUG_ON(retry == 3 && task != NULL);
1453 sas_free_task(task);
1454 return res;
1455 }
1456
mvs_debug_issue_ssp_tmf(struct domain_device * dev,u8 * lun,struct mvs_tmf_task * tmf)1457 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1458 u8 *lun, struct mvs_tmf_task *tmf)
1459 {
1460 struct sas_ssp_task ssp_task;
1461 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1462 return TMF_RESP_FUNC_ESUPP;
1463
1464 memcpy(ssp_task.LUN, lun, 8);
1465
1466 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1467 sizeof(ssp_task), tmf);
1468 }
1469
1470
1471 /* Standard mandates link reset for ATA (type 0)
1472 and hard reset for SSP (type 1) , only for RECOVERY */
mvs_debug_I_T_nexus_reset(struct domain_device * dev)1473 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1474 {
1475 int rc;
1476 struct sas_phy *phy = sas_get_local_phy(dev);
1477 int reset_type = (dev->dev_type == SATA_DEV ||
1478 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1479 rc = sas_phy_reset(phy, reset_type);
1480 sas_put_local_phy(phy);
1481 msleep(2000);
1482 return rc;
1483 }
1484
1485 /* mandatory SAM-3 */
mvs_lu_reset(struct domain_device * dev,u8 * lun)1486 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1487 {
1488 unsigned long flags;
1489 int rc = TMF_RESP_FUNC_FAILED;
1490 struct mvs_tmf_task tmf_task;
1491 struct mvs_device * mvi_dev = dev->lldd_dev;
1492 struct mvs_info *mvi = mvi_dev->mvi_info;
1493
1494 tmf_task.tmf = TMF_LU_RESET;
1495 mvi_dev->dev_status = MVS_DEV_EH;
1496 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1497 if (rc == TMF_RESP_FUNC_COMPLETE) {
1498 spin_lock_irqsave(&mvi->lock, flags);
1499 mvs_release_task(mvi, dev);
1500 spin_unlock_irqrestore(&mvi->lock, flags);
1501 }
1502 /* If failed, fall-through I_T_Nexus reset */
1503 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1504 mvi_dev->device_id, rc);
1505 return rc;
1506 }
1507
mvs_I_T_nexus_reset(struct domain_device * dev)1508 int mvs_I_T_nexus_reset(struct domain_device *dev)
1509 {
1510 unsigned long flags;
1511 int rc = TMF_RESP_FUNC_FAILED;
1512 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1513 struct mvs_info *mvi = mvi_dev->mvi_info;
1514
1515 if (mvi_dev->dev_status != MVS_DEV_EH)
1516 return TMF_RESP_FUNC_COMPLETE;
1517 else
1518 mvi_dev->dev_status = MVS_DEV_NORMAL;
1519 rc = mvs_debug_I_T_nexus_reset(dev);
1520 mv_printk("%s for device[%x]:rc= %d\n",
1521 __func__, mvi_dev->device_id, rc);
1522
1523 spin_lock_irqsave(&mvi->lock, flags);
1524 mvs_release_task(mvi, dev);
1525 spin_unlock_irqrestore(&mvi->lock, flags);
1526
1527 return rc;
1528 }
1529 /* optional SAM-3 */
mvs_query_task(struct sas_task * task)1530 int mvs_query_task(struct sas_task *task)
1531 {
1532 u32 tag;
1533 struct scsi_lun lun;
1534 struct mvs_tmf_task tmf_task;
1535 int rc = TMF_RESP_FUNC_FAILED;
1536
1537 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1538 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1539 struct domain_device *dev = task->dev;
1540 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1541 struct mvs_info *mvi = mvi_dev->mvi_info;
1542
1543 int_to_scsilun(cmnd->device->lun, &lun);
1544 rc = mvs_find_tag(mvi, task, &tag);
1545 if (rc == 0) {
1546 rc = TMF_RESP_FUNC_FAILED;
1547 return rc;
1548 }
1549
1550 tmf_task.tmf = TMF_QUERY_TASK;
1551 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1552
1553 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1554 switch (rc) {
1555 /* The task is still in Lun, release it then */
1556 case TMF_RESP_FUNC_SUCC:
1557 /* The task is not in Lun or failed, reset the phy */
1558 case TMF_RESP_FUNC_FAILED:
1559 case TMF_RESP_FUNC_COMPLETE:
1560 break;
1561 }
1562 }
1563 mv_printk("%s:rc= %d\n", __func__, rc);
1564 return rc;
1565 }
1566
1567 /* mandatory SAM-3, still need free task/slot info */
mvs_abort_task(struct sas_task * task)1568 int mvs_abort_task(struct sas_task *task)
1569 {
1570 struct scsi_lun lun;
1571 struct mvs_tmf_task tmf_task;
1572 struct domain_device *dev = task->dev;
1573 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1574 struct mvs_info *mvi;
1575 int rc = TMF_RESP_FUNC_FAILED;
1576 unsigned long flags;
1577 u32 tag;
1578
1579 if (!mvi_dev) {
1580 mv_printk("Device has removed\n");
1581 return TMF_RESP_FUNC_FAILED;
1582 }
1583
1584 mvi = mvi_dev->mvi_info;
1585
1586 spin_lock_irqsave(&task->task_state_lock, flags);
1587 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1588 spin_unlock_irqrestore(&task->task_state_lock, flags);
1589 rc = TMF_RESP_FUNC_COMPLETE;
1590 goto out;
1591 }
1592 spin_unlock_irqrestore(&task->task_state_lock, flags);
1593 mvi_dev->dev_status = MVS_DEV_EH;
1594 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1595 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1596
1597 int_to_scsilun(cmnd->device->lun, &lun);
1598 rc = mvs_find_tag(mvi, task, &tag);
1599 if (rc == 0) {
1600 mv_printk("No such tag in %s\n", __func__);
1601 rc = TMF_RESP_FUNC_FAILED;
1602 return rc;
1603 }
1604
1605 tmf_task.tmf = TMF_ABORT_TASK;
1606 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1607
1608 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1609
1610 /* if successful, clear the task and callback forwards.*/
1611 if (rc == TMF_RESP_FUNC_COMPLETE) {
1612 u32 slot_no;
1613 struct mvs_slot_info *slot;
1614
1615 if (task->lldd_task) {
1616 slot = task->lldd_task;
1617 slot_no = (u32) (slot - mvi->slot_info);
1618 spin_lock_irqsave(&mvi->lock, flags);
1619 mvs_slot_complete(mvi, slot_no, 1);
1620 spin_unlock_irqrestore(&mvi->lock, flags);
1621 }
1622 }
1623
1624 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1625 task->task_proto & SAS_PROTOCOL_STP) {
1626 if (SATA_DEV == dev->dev_type) {
1627 struct mvs_slot_info *slot = task->lldd_task;
1628 u32 slot_idx = (u32)(slot - mvi->slot_info);
1629 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1630 "slot=%p slot_idx=x%x\n",
1631 mvi, task, slot, slot_idx);
1632 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1633 mvs_slot_task_free(mvi, task, slot, slot_idx);
1634 rc = TMF_RESP_FUNC_COMPLETE;
1635 goto out;
1636 }
1637
1638 }
1639 out:
1640 if (rc != TMF_RESP_FUNC_COMPLETE)
1641 mv_printk("%s:rc= %d\n", __func__, rc);
1642 return rc;
1643 }
1644
mvs_abort_task_set(struct domain_device * dev,u8 * lun)1645 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1646 {
1647 int rc = TMF_RESP_FUNC_FAILED;
1648 struct mvs_tmf_task tmf_task;
1649
1650 tmf_task.tmf = TMF_ABORT_TASK_SET;
1651 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1652
1653 return rc;
1654 }
1655
mvs_clear_aca(struct domain_device * dev,u8 * lun)1656 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1657 {
1658 int rc = TMF_RESP_FUNC_FAILED;
1659 struct mvs_tmf_task tmf_task;
1660
1661 tmf_task.tmf = TMF_CLEAR_ACA;
1662 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1663
1664 return rc;
1665 }
1666
mvs_clear_task_set(struct domain_device * dev,u8 * lun)1667 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1668 {
1669 int rc = TMF_RESP_FUNC_FAILED;
1670 struct mvs_tmf_task tmf_task;
1671
1672 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1673 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1674
1675 return rc;
1676 }
1677
mvs_sata_done(struct mvs_info * mvi,struct sas_task * task,u32 slot_idx,int err)1678 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1679 u32 slot_idx, int err)
1680 {
1681 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1682 struct task_status_struct *tstat = &task->task_status;
1683 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1684 int stat = SAM_STAT_GOOD;
1685
1686
1687 resp->frame_len = sizeof(struct dev_to_host_fis);
1688 memcpy(&resp->ending_fis[0],
1689 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1690 sizeof(struct dev_to_host_fis));
1691 tstat->buf_valid_size = sizeof(*resp);
1692 if (unlikely(err)) {
1693 if (unlikely(err & CMD_ISS_STPD))
1694 stat = SAS_OPEN_REJECT;
1695 else
1696 stat = SAS_PROTO_RESPONSE;
1697 }
1698
1699 return stat;
1700 }
1701
mvs_set_sense(u8 * buffer,int len,int d_sense,int key,int asc,int ascq)1702 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1703 int key, int asc, int ascq)
1704 {
1705 memset(buffer, 0, len);
1706
1707 if (d_sense) {
1708 /* Descriptor format */
1709 if (len < 4) {
1710 mv_printk("Length %d of sense buffer too small to "
1711 "fit sense %x:%x:%x", len, key, asc, ascq);
1712 }
1713
1714 buffer[0] = 0x72; /* Response Code */
1715 if (len > 1)
1716 buffer[1] = key; /* Sense Key */
1717 if (len > 2)
1718 buffer[2] = asc; /* ASC */
1719 if (len > 3)
1720 buffer[3] = ascq; /* ASCQ */
1721 } else {
1722 if (len < 14) {
1723 mv_printk("Length %d of sense buffer too small to "
1724 "fit sense %x:%x:%x", len, key, asc, ascq);
1725 }
1726
1727 buffer[0] = 0x70; /* Response Code */
1728 if (len > 2)
1729 buffer[2] = key; /* Sense Key */
1730 if (len > 7)
1731 buffer[7] = 0x0a; /* Additional Sense Length */
1732 if (len > 12)
1733 buffer[12] = asc; /* ASC */
1734 if (len > 13)
1735 buffer[13] = ascq; /* ASCQ */
1736 }
1737
1738 return;
1739 }
1740
mvs_fill_ssp_resp_iu(struct ssp_response_iu * iu,u8 key,u8 asc,u8 asc_q)1741 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1742 u8 key, u8 asc, u8 asc_q)
1743 {
1744 iu->datapres = 2;
1745 iu->response_data_len = 0;
1746 iu->sense_data_len = 17;
1747 iu->status = 02;
1748 mvs_set_sense(iu->sense_data, 17, 0,
1749 key, asc, asc_q);
1750 }
1751
mvs_slot_err(struct mvs_info * mvi,struct sas_task * task,u32 slot_idx)1752 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1753 u32 slot_idx)
1754 {
1755 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1756 int stat;
1757 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1758 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1759 u32 tfs = 0;
1760 enum mvs_port_type type = PORT_TYPE_SAS;
1761
1762 if (err_dw0 & CMD_ISS_STPD)
1763 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1764
1765 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1766
1767 stat = SAM_STAT_CHECK_CONDITION;
1768 switch (task->task_proto) {
1769 case SAS_PROTOCOL_SSP:
1770 {
1771 stat = SAS_ABORTED_TASK;
1772 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1773 struct ssp_response_iu *iu = slot->response +
1774 sizeof(struct mvs_err_info);
1775 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1776 sas_ssp_task_response(mvi->dev, task, iu);
1777 stat = SAM_STAT_CHECK_CONDITION;
1778 }
1779 if (err_dw1 & bit(31))
1780 mv_printk("reuse same slot, retry command.\n");
1781 break;
1782 }
1783 case SAS_PROTOCOL_SMP:
1784 stat = SAM_STAT_CHECK_CONDITION;
1785 break;
1786
1787 case SAS_PROTOCOL_SATA:
1788 case SAS_PROTOCOL_STP:
1789 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1790 {
1791 task->ata_task.use_ncq = 0;
1792 stat = SAS_PROTO_RESPONSE;
1793 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1794 }
1795 break;
1796 default:
1797 break;
1798 }
1799
1800 return stat;
1801 }
1802
mvs_slot_complete(struct mvs_info * mvi,u32 rx_desc,u32 flags)1803 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1804 {
1805 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1806 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1807 struct sas_task *task = slot->task;
1808 struct mvs_device *mvi_dev = NULL;
1809 struct task_status_struct *tstat;
1810 struct domain_device *dev;
1811 u32 aborted;
1812
1813 void *to;
1814 enum exec_status sts;
1815
1816 if (unlikely(!task || !task->lldd_task || !task->dev))
1817 return -1;
1818
1819 tstat = &task->task_status;
1820 dev = task->dev;
1821 mvi_dev = dev->lldd_dev;
1822
1823 spin_lock(&task->task_state_lock);
1824 task->task_state_flags &=
1825 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1826 task->task_state_flags |= SAS_TASK_STATE_DONE;
1827 /* race condition*/
1828 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1829 spin_unlock(&task->task_state_lock);
1830
1831 memset(tstat, 0, sizeof(*tstat));
1832 tstat->resp = SAS_TASK_COMPLETE;
1833
1834 if (unlikely(aborted)) {
1835 tstat->stat = SAS_ABORTED_TASK;
1836 if (mvi_dev && mvi_dev->running_req)
1837 mvi_dev->running_req--;
1838 if (sas_protocol_ata(task->task_proto))
1839 mvs_free_reg_set(mvi, mvi_dev);
1840
1841 mvs_slot_task_free(mvi, task, slot, slot_idx);
1842 return -1;
1843 }
1844
1845 /* when no device attaching, go ahead and complete by error handling*/
1846 if (unlikely(!mvi_dev || flags)) {
1847 if (!mvi_dev)
1848 mv_dprintk("port has not device.\n");
1849 tstat->stat = SAS_PHY_DOWN;
1850 goto out;
1851 }
1852
1853 /* error info record present */
1854 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1855 mv_dprintk("port %d slot %d rx_desc %X has error info"
1856 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1857 rx_desc, (u64)(*(u64 *)slot->response));
1858 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1859 tstat->resp = SAS_TASK_COMPLETE;
1860 goto out;
1861 }
1862
1863 switch (task->task_proto) {
1864 case SAS_PROTOCOL_SSP:
1865 /* hw says status == 0, datapres == 0 */
1866 if (rx_desc & RXQ_GOOD) {
1867 tstat->stat = SAM_STAT_GOOD;
1868 tstat->resp = SAS_TASK_COMPLETE;
1869 }
1870 /* response frame present */
1871 else if (rx_desc & RXQ_RSP) {
1872 struct ssp_response_iu *iu = slot->response +
1873 sizeof(struct mvs_err_info);
1874 sas_ssp_task_response(mvi->dev, task, iu);
1875 } else
1876 tstat->stat = SAM_STAT_CHECK_CONDITION;
1877 break;
1878
1879 case SAS_PROTOCOL_SMP: {
1880 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1881 tstat->stat = SAM_STAT_GOOD;
1882 to = kmap_atomic(sg_page(sg_resp));
1883 memcpy(to + sg_resp->offset,
1884 slot->response + sizeof(struct mvs_err_info),
1885 sg_dma_len(sg_resp));
1886 kunmap_atomic(to);
1887 break;
1888 }
1889
1890 case SAS_PROTOCOL_SATA:
1891 case SAS_PROTOCOL_STP:
1892 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1893 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1894 break;
1895 }
1896
1897 default:
1898 tstat->stat = SAM_STAT_CHECK_CONDITION;
1899 break;
1900 }
1901 if (!slot->port->port_attached) {
1902 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1903 tstat->stat = SAS_PHY_DOWN;
1904 }
1905
1906
1907 out:
1908 if (mvi_dev && mvi_dev->running_req) {
1909 mvi_dev->running_req--;
1910 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1911 mvs_free_reg_set(mvi, mvi_dev);
1912 }
1913 mvs_slot_task_free(mvi, task, slot, slot_idx);
1914 sts = tstat->stat;
1915
1916 spin_unlock(&mvi->lock);
1917 if (task->task_done)
1918 task->task_done(task);
1919
1920 spin_lock(&mvi->lock);
1921
1922 return sts;
1923 }
1924
mvs_do_release_task(struct mvs_info * mvi,int phy_no,struct domain_device * dev)1925 void mvs_do_release_task(struct mvs_info *mvi,
1926 int phy_no, struct domain_device *dev)
1927 {
1928 u32 slot_idx;
1929 struct mvs_phy *phy;
1930 struct mvs_port *port;
1931 struct mvs_slot_info *slot, *slot2;
1932
1933 phy = &mvi->phy[phy_no];
1934 port = phy->port;
1935 if (!port)
1936 return;
1937 /* clean cmpl queue in case request is already finished */
1938 mvs_int_rx(mvi, false);
1939
1940
1941
1942 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1943 struct sas_task *task;
1944 slot_idx = (u32) (slot - mvi->slot_info);
1945 task = slot->task;
1946
1947 if (dev && task->dev != dev)
1948 continue;
1949
1950 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1951 slot_idx, slot->slot_tag, task);
1952 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1953
1954 mvs_slot_complete(mvi, slot_idx, 1);
1955 }
1956 }
1957
mvs_release_task(struct mvs_info * mvi,struct domain_device * dev)1958 void mvs_release_task(struct mvs_info *mvi,
1959 struct domain_device *dev)
1960 {
1961 int i, phyno[WIDE_PORT_MAX_PHY], num;
1962 num = mvs_find_dev_phyno(dev, phyno);
1963 for (i = 0; i < num; i++)
1964 mvs_do_release_task(mvi, phyno[i], dev);
1965 }
1966
mvs_phy_disconnected(struct mvs_phy * phy)1967 static void mvs_phy_disconnected(struct mvs_phy *phy)
1968 {
1969 phy->phy_attached = 0;
1970 phy->att_dev_info = 0;
1971 phy->att_dev_sas_addr = 0;
1972 }
1973
mvs_work_queue(struct work_struct * work)1974 static void mvs_work_queue(struct work_struct *work)
1975 {
1976 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1977 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1978 struct mvs_info *mvi = mwq->mvi;
1979 unsigned long flags;
1980 u32 phy_no = (unsigned long) mwq->data;
1981 struct sas_ha_struct *sas_ha = mvi->sas;
1982 struct mvs_phy *phy = &mvi->phy[phy_no];
1983 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1984
1985 spin_lock_irqsave(&mvi->lock, flags);
1986 if (mwq->handler & PHY_PLUG_EVENT) {
1987
1988 if (phy->phy_event & PHY_PLUG_OUT) {
1989 u32 tmp;
1990 struct sas_identify_frame *id;
1991 id = (struct sas_identify_frame *)phy->frame_rcvd;
1992 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1993 phy->phy_event &= ~PHY_PLUG_OUT;
1994 if (!(tmp & PHY_READY_MASK)) {
1995 sas_phy_disconnected(sas_phy);
1996 mvs_phy_disconnected(phy);
1997 sas_ha->notify_phy_event(sas_phy,
1998 PHYE_LOSS_OF_SIGNAL);
1999 mv_dprintk("phy%d Removed Device\n", phy_no);
2000 } else {
2001 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2002 mvs_update_phyinfo(mvi, phy_no, 1);
2003 mvs_bytes_dmaed(mvi, phy_no);
2004 mvs_port_notify_formed(sas_phy, 0);
2005 mv_dprintk("phy%d Attached Device\n", phy_no);
2006 }
2007 }
2008 } else if (mwq->handler & EXP_BRCT_CHG) {
2009 phy->phy_event &= ~EXP_BRCT_CHG;
2010 sas_ha->notify_port_event(sas_phy,
2011 PORTE_BROADCAST_RCVD);
2012 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
2013 }
2014 list_del(&mwq->entry);
2015 spin_unlock_irqrestore(&mvi->lock, flags);
2016 kfree(mwq);
2017 }
2018
mvs_handle_event(struct mvs_info * mvi,void * data,int handler)2019 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2020 {
2021 struct mvs_wq *mwq;
2022 int ret = 0;
2023
2024 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2025 if (mwq) {
2026 mwq->mvi = mvi;
2027 mwq->data = data;
2028 mwq->handler = handler;
2029 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2030 list_add_tail(&mwq->entry, &mvi->wq_list);
2031 schedule_delayed_work(&mwq->work_q, HZ * 2);
2032 } else
2033 ret = -ENOMEM;
2034
2035 return ret;
2036 }
2037
mvs_sig_time_out(unsigned long tphy)2038 static void mvs_sig_time_out(unsigned long tphy)
2039 {
2040 struct mvs_phy *phy = (struct mvs_phy *)tphy;
2041 struct mvs_info *mvi = phy->mvi;
2042 u8 phy_no;
2043
2044 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2045 if (&mvi->phy[phy_no] == phy) {
2046 mv_dprintk("Get signature time out, reset phy %d\n",
2047 phy_no+mvi->id*mvi->chip->n_phy);
2048 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
2049 }
2050 }
2051 }
2052
mvs_int_port(struct mvs_info * mvi,int phy_no,u32 events)2053 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2054 {
2055 u32 tmp;
2056 struct mvs_phy *phy = &mvi->phy[phy_no];
2057
2058 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2059 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2060 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2061 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2062 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
2063 phy->irq_status);
2064
2065 /*
2066 * events is port event now ,
2067 * we need check the interrupt status which belongs to per port.
2068 */
2069
2070 if (phy->irq_status & PHYEV_DCDR_ERR) {
2071 mv_dprintk("phy %d STP decoding error.\n",
2072 phy_no + mvi->id*mvi->chip->n_phy);
2073 }
2074
2075 if (phy->irq_status & PHYEV_POOF) {
2076 mdelay(500);
2077 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2078 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2079 int ready;
2080 mvs_do_release_task(mvi, phy_no, NULL);
2081 phy->phy_event |= PHY_PLUG_OUT;
2082 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2083 mvs_handle_event(mvi,
2084 (void *)(unsigned long)phy_no,
2085 PHY_PLUG_EVENT);
2086 ready = mvs_is_phy_ready(mvi, phy_no);
2087 if (ready || dev_sata) {
2088 if (MVS_CHIP_DISP->stp_reset)
2089 MVS_CHIP_DISP->stp_reset(mvi,
2090 phy_no);
2091 else
2092 MVS_CHIP_DISP->phy_reset(mvi,
2093 phy_no, MVS_SOFT_RESET);
2094 return;
2095 }
2096 }
2097 }
2098
2099 if (phy->irq_status & PHYEV_COMWAKE) {
2100 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2101 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2102 tmp | PHYEV_SIG_FIS);
2103 if (phy->timer.function == NULL) {
2104 phy->timer.data = (unsigned long)phy;
2105 phy->timer.function = mvs_sig_time_out;
2106 phy->timer.expires = jiffies + 5*HZ;
2107 add_timer(&phy->timer);
2108 }
2109 }
2110 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2111 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2112 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2113 if (phy->phy_status) {
2114 mdelay(10);
2115 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2116 if (phy->phy_type & PORT_TYPE_SATA) {
2117 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2118 mvi, phy_no);
2119 tmp &= ~PHYEV_SIG_FIS;
2120 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2121 phy_no, tmp);
2122 }
2123 mvs_update_phyinfo(mvi, phy_no, 0);
2124 if (phy->phy_type & PORT_TYPE_SAS) {
2125 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2126 mdelay(10);
2127 }
2128
2129 mvs_bytes_dmaed(mvi, phy_no);
2130 /* whether driver is going to handle hot plug */
2131 if (phy->phy_event & PHY_PLUG_OUT) {
2132 mvs_port_notify_formed(&phy->sas_phy, 0);
2133 phy->phy_event &= ~PHY_PLUG_OUT;
2134 }
2135 } else {
2136 mv_dprintk("plugin interrupt but phy%d is gone\n",
2137 phy_no + mvi->id*mvi->chip->n_phy);
2138 }
2139 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2140 mv_dprintk("phy %d broadcast change.\n",
2141 phy_no + mvi->id*mvi->chip->n_phy);
2142 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2143 EXP_BRCT_CHG);
2144 }
2145 }
2146
mvs_int_rx(struct mvs_info * mvi,bool self_clear)2147 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2148 {
2149 u32 rx_prod_idx, rx_desc;
2150 bool attn = false;
2151
2152 /* the first dword in the RX ring is special: it contains
2153 * a mirror of the hardware's RX producer index, so that
2154 * we don't have to stall the CPU reading that register.
2155 * The actual RX ring is offset by one dword, due to this.
2156 */
2157 rx_prod_idx = mvi->rx_cons;
2158 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2159 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2160 return 0;
2161
2162 /* The CMPL_Q may come late, read from register and try again
2163 * note: if coalescing is enabled,
2164 * it will need to read from register every time for sure
2165 */
2166 if (unlikely(mvi->rx_cons == rx_prod_idx))
2167 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2168
2169 if (mvi->rx_cons == rx_prod_idx)
2170 return 0;
2171
2172 while (mvi->rx_cons != rx_prod_idx) {
2173 /* increment our internal RX consumer pointer */
2174 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2175 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2176
2177 if (likely(rx_desc & RXQ_DONE))
2178 mvs_slot_complete(mvi, rx_desc, 0);
2179 if (rx_desc & RXQ_ATTN) {
2180 attn = true;
2181 } else if (rx_desc & RXQ_ERR) {
2182 if (!(rx_desc & RXQ_DONE))
2183 mvs_slot_complete(mvi, rx_desc, 0);
2184 } else if (rx_desc & RXQ_SLOT_RESET) {
2185 mvs_slot_free(mvi, rx_desc);
2186 }
2187 }
2188
2189 if (attn && self_clear)
2190 MVS_CHIP_DISP->int_full(mvi);
2191 return 0;
2192 }
2193
2194