1 // SPDX-License-Identifier: GPL-2.0-only
3 * Marvell 88SE64xx/88SE94xx main function
5 * Copyright 2007 Red Hat, Inc.
6 * Copyright 2008 Marvell. <kewei@marvell.com>
7 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
12 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
14 if (task->lldd_task) {
15 struct mvs_slot_info *slot;
16 slot = task->lldd_task;
17 *tag = slot->slot_tag;
23 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
25 void *bitmap = mvi->tags;
26 clear_bit(tag, bitmap);
29 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
31 mvs_tag_clear(mvi, tag);
34 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
36 void *bitmap = mvi->tags;
40 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
42 unsigned int index, tag;
43 void *bitmap = mvi->tags;
45 index = find_first_zero_bit(bitmap, mvi->tags_num);
47 if (tag >= mvi->tags_num)
48 return -SAS_QUEUE_FULL;
49 mvs_tag_set(mvi, tag);
54 void mvs_tag_init(struct mvs_info *mvi)
57 for (i = 0; i < mvi->tags_num; ++i)
58 mvs_tag_clear(mvi, i);
61 static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
63 unsigned long i = 0, j = 0, hi = 0;
64 struct sas_ha_struct *sha = dev->port->ha;
65 struct mvs_info *mvi = NULL;
66 struct asd_sas_phy *phy;
68 while (sha->sas_port[i]) {
69 if (sha->sas_port[i] == dev->port) {
70 phy = container_of(sha->sas_port[i]->phy_list.next,
71 struct asd_sas_phy, port_phy_el);
73 while (sha->sas_phy[j]) {
74 if (sha->sas_phy[j] == phy)
82 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
83 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
89 static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
91 unsigned long i = 0, j = 0, n = 0, num = 0;
92 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
93 struct mvs_info *mvi = mvi_dev->mvi_info;
94 struct sas_ha_struct *sha = dev->port->ha;
96 while (sha->sas_port[i]) {
97 if (sha->sas_port[i] == dev->port) {
98 struct asd_sas_phy *phy;
99 list_for_each_entry(phy,
100 &sha->sas_port[i]->phy_list, port_phy_el) {
102 while (sha->sas_phy[j]) {
103 if (sha->sas_phy[j] == phy)
107 phyno[n] = (j >= mvi->chip->n_phy) ?
108 (j - mvi->chip->n_phy) : j;
119 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
123 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
124 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
127 if (mvi->devices[dev_no].taskfileset == reg_set)
128 return &mvi->devices[dev_no];
133 static inline void mvs_free_reg_set(struct mvs_info *mvi,
134 struct mvs_device *dev)
137 mv_printk("device has been free.\n");
140 if (dev->taskfileset == MVS_ID_NOT_MAPPED)
142 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
145 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
146 struct mvs_device *dev)
148 if (dev->taskfileset != MVS_ID_NOT_MAPPED)
150 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
153 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
156 for_each_phy(phy_mask, phy_mask, no) {
159 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
163 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
166 int rc = 0, phy_id = sas_phy->id;
168 struct sas_ha_struct *sha = sas_phy->ha;
169 struct mvs_info *mvi = NULL;
171 while (sha->sas_phy[i]) {
172 if (sha->sas_phy[i] == sas_phy)
176 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
177 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
180 case PHY_FUNC_SET_LINK_RATE:
181 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
184 case PHY_FUNC_HARD_RESET:
185 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
186 if (tmp & PHY_RST_HARD)
188 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
191 case PHY_FUNC_LINK_RESET:
192 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
193 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
196 case PHY_FUNC_DISABLE:
197 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
199 case PHY_FUNC_RELEASE_SPINUP_HOLD:
207 void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
208 u32 off_hi, u64 sas_addr)
210 u32 lo = (u32)sas_addr;
211 u32 hi = (u32)(sas_addr>>32);
213 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
214 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
215 MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
216 MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
219 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i, gfp_t gfp_flags)
221 struct mvs_phy *phy = &mvi->phy[i];
222 struct asd_sas_phy *sas_phy = &phy->sas_phy;
224 if (!phy->phy_attached)
227 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
228 && phy->phy_type & PORT_TYPE_SAS) {
232 sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags);
235 struct sas_phy *sphy = sas_phy->phy;
237 sphy->negotiated_linkrate = sas_phy->linkrate;
238 sphy->minimum_linkrate = phy->minimum_linkrate;
239 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
240 sphy->maximum_linkrate = phy->maximum_linkrate;
241 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
244 if (phy->phy_type & PORT_TYPE_SAS) {
245 struct sas_identify_frame *id;
247 id = (struct sas_identify_frame *)phy->frame_rcvd;
248 id->dev_type = phy->identify.device_type;
249 id->initiator_bits = SAS_PROTOCOL_ALL;
250 id->target_bits = phy->identify.target_port_protocols;
252 /* direct attached SAS device */
253 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
254 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
255 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00);
257 } else if (phy->phy_type & PORT_TYPE_SATA) {
260 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
262 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
264 sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags);
267 void mvs_scan_start(struct Scsi_Host *shost)
270 unsigned short core_nr;
271 struct mvs_info *mvi;
272 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
273 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
275 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
277 for (j = 0; j < core_nr; j++) {
278 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
279 for (i = 0; i < mvi->chip->n_phy; ++i)
280 mvs_bytes_dmaed(mvi, i, GFP_KERNEL);
282 mvs_prv->scan_finished = 1;
285 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
287 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
288 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
290 if (mvs_prv->scan_finished == 0)
297 static int mvs_task_prep_smp(struct mvs_info *mvi,
298 struct mvs_task_exec_info *tei)
301 struct sas_ha_struct *sha = mvi->sas;
302 struct sas_task *task = tei->task;
303 struct mvs_cmd_hdr *hdr = tei->hdr;
304 struct domain_device *dev = task->dev;
305 struct asd_sas_port *sas_port = dev->port;
306 struct sas_phy *sphy = dev->phy;
307 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
308 struct scatterlist *sg_req, *sg_resp;
309 u32 req_len, resp_len, tag = tei->tag;
312 dma_addr_t buf_tmp_dma;
314 struct mvs_slot_info *slot = &mvi->slot_info[tag];
315 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
318 * DMA-map SMP request, response buffers
320 sg_req = &task->smp_task.smp_req;
321 elem = dma_map_sg(mvi->dev, sg_req, 1, DMA_TO_DEVICE);
324 req_len = sg_dma_len(sg_req);
326 sg_resp = &task->smp_task.smp_resp;
327 elem = dma_map_sg(mvi->dev, sg_resp, 1, DMA_FROM_DEVICE);
332 resp_len = SB_RFB_MAX;
334 /* must be in dwords */
335 if ((req_len & 0x3) || (resp_len & 0x3)) {
341 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
344 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
346 buf_tmp_dma = slot->buf_dma;
348 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
350 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
352 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
354 buf_tmp += MVS_OAF_SZ;
355 buf_tmp_dma += MVS_OAF_SZ;
357 /* region 3: PRD table *********************************** */
360 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
364 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
368 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
369 slot->response = buf_tmp;
370 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
371 if (mvi->flags & MVF_FLAG_SOC)
372 hdr->reserved[0] = 0;
375 * Fill in TX ring and command slot header
377 slot->tx = mvi->tx_prod;
378 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
380 (MVS_PHY_ID << TXQ_PHY_SHIFT));
383 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
384 hdr->tags = cpu_to_le32(tag);
387 /* generate open address frame hdr (first 12 bytes) */
388 /* initiator, SMP, ftype 1h */
389 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
390 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
391 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
392 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
394 /* fill in PRD (scatter/gather) table, if any */
395 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
400 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
403 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
408 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
410 struct ata_queued_cmd *qc = task->uldd_task;
413 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
414 qc->tf.command == ATA_CMD_FPDMA_READ ||
415 qc->tf.command == ATA_CMD_FPDMA_RECV ||
416 qc->tf.command == ATA_CMD_FPDMA_SEND ||
417 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
426 static int mvs_task_prep_ata(struct mvs_info *mvi,
427 struct mvs_task_exec_info *tei)
429 struct sas_task *task = tei->task;
430 struct domain_device *dev = task->dev;
431 struct mvs_device *mvi_dev = dev->lldd_dev;
432 struct mvs_cmd_hdr *hdr = tei->hdr;
433 struct asd_sas_port *sas_port = dev->port;
434 struct mvs_slot_info *slot;
436 u32 tag = tei->tag, hdr_tag;
439 u8 *buf_cmd, *buf_oaf;
440 dma_addr_t buf_tmp_dma;
441 u32 i, req_len, resp_len;
442 const u32 max_resp_len = SB_RFB_MAX;
444 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
445 mv_dprintk("Have not enough regiset for dev %d.\n",
449 slot = &mvi->slot_info[tag];
450 slot->tx = mvi->tx_prod;
451 del_q = TXQ_MODE_I | tag |
452 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
453 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
454 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
455 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
457 if (task->data_dir == DMA_FROM_DEVICE)
458 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
460 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
462 if (task->ata_task.use_ncq)
464 if (dev->sata_dev.class == ATA_DEV_ATAPI) {
465 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
469 hdr->flags = cpu_to_le32(flags);
471 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
472 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
476 hdr->tags = cpu_to_le32(hdr_tag);
478 hdr->data_len = cpu_to_le32(task->total_xfer_len);
481 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
484 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
485 buf_cmd = buf_tmp = slot->buf;
486 buf_tmp_dma = slot->buf_dma;
488 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
490 buf_tmp += MVS_ATA_CMD_SZ;
491 buf_tmp_dma += MVS_ATA_CMD_SZ;
493 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
494 /* used for STP. unused for SATA? */
496 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
498 buf_tmp += MVS_OAF_SZ;
499 buf_tmp_dma += MVS_OAF_SZ;
501 /* region 3: PRD table ********************************************* */
505 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
508 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
513 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
514 slot->response = buf_tmp;
515 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
516 if (mvi->flags & MVF_FLAG_SOC)
517 hdr->reserved[0] = 0;
519 req_len = sizeof(struct host_to_dev_fis);
520 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
521 sizeof(struct mvs_err_info) - i;
523 /* request, response lengths */
524 resp_len = min(resp_len, max_resp_len);
525 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
527 if (likely(!task->ata_task.device_control_reg_update))
528 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
529 /* fill in command FIS and ATAPI CDB */
530 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
531 if (dev->sata_dev.class == ATA_DEV_ATAPI)
532 memcpy(buf_cmd + STP_ATAPI_CMD,
533 task->ata_task.atapi_packet, 16);
535 /* generate open address frame hdr (first 12 bytes) */
536 /* initiator, STP, ftype 1h */
537 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
538 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
539 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
540 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
542 /* fill in PRD (scatter/gather) table, if any */
543 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
545 if (task->data_dir == DMA_FROM_DEVICE)
546 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
547 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
552 static int mvs_task_prep_ssp(struct mvs_info *mvi,
553 struct mvs_task_exec_info *tei, int is_tmf,
554 struct mvs_tmf_task *tmf)
556 struct sas_task *task = tei->task;
557 struct mvs_cmd_hdr *hdr = tei->hdr;
558 struct mvs_port *port = tei->port;
559 struct domain_device *dev = task->dev;
560 struct mvs_device *mvi_dev = dev->lldd_dev;
561 struct asd_sas_port *sas_port = dev->port;
562 struct mvs_slot_info *slot;
564 struct ssp_frame_hdr *ssp_hdr;
566 u8 *buf_cmd, *buf_oaf, fburst = 0;
567 dma_addr_t buf_tmp_dma;
569 u32 resp_len, req_len, i, tag = tei->tag;
570 const u32 max_resp_len = SB_RFB_MAX;
573 slot = &mvi->slot_info[tag];
575 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
576 sas_port->phy_mask) & TXQ_PHY_MASK;
578 slot->tx = mvi->tx_prod;
579 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
580 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
581 (phy_mask << TXQ_PHY_SHIFT));
584 if (task->ssp_task.enable_first_burst) {
589 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
591 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
593 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
594 hdr->tags = cpu_to_le32(tag);
595 hdr->data_len = cpu_to_le32(task->total_xfer_len);
598 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
601 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
602 buf_cmd = buf_tmp = slot->buf;
603 buf_tmp_dma = slot->buf_dma;
605 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
607 buf_tmp += MVS_SSP_CMD_SZ;
608 buf_tmp_dma += MVS_SSP_CMD_SZ;
610 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
612 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
614 buf_tmp += MVS_OAF_SZ;
615 buf_tmp_dma += MVS_OAF_SZ;
617 /* region 3: PRD table ********************************************* */
620 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
624 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
628 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
629 slot->response = buf_tmp;
630 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
631 if (mvi->flags & MVF_FLAG_SOC)
632 hdr->reserved[0] = 0;
634 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
635 sizeof(struct mvs_err_info) - i;
636 resp_len = min(resp_len, max_resp_len);
638 req_len = sizeof(struct ssp_frame_hdr) + 28;
640 /* request, response lengths */
641 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
643 /* generate open address frame hdr (first 12 bytes) */
644 /* initiator, SSP, ftype 1h */
645 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
646 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
647 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
648 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
650 /* fill in SSP frame header (Command Table.SSP frame header) */
651 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
654 ssp_hdr->frame_type = SSP_TASK;
656 ssp_hdr->frame_type = SSP_COMMAND;
658 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
659 HASHED_SAS_ADDR_SIZE);
660 memcpy(ssp_hdr->hashed_src_addr,
661 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
662 ssp_hdr->tag = cpu_to_be16(tag);
664 /* fill in IU for TASK and Command Frame */
665 buf_cmd += sizeof(*ssp_hdr);
666 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
668 if (ssp_hdr->frame_type != SSP_TASK) {
669 buf_cmd[9] = fburst | task->ssp_task.task_attr |
670 (task->ssp_task.task_prio << 3);
671 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
672 task->ssp_task.cmd->cmd_len);
674 buf_cmd[10] = tmf->tmf;
679 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
681 tmf->tag_of_task_to_be_managed & 0xff;
687 /* fill in PRD (scatter/gather) table, if any */
688 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
692 #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
693 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
694 struct mvs_tmf_task *tmf, int *pass)
696 struct domain_device *dev = task->dev;
697 struct mvs_device *mvi_dev = dev->lldd_dev;
698 struct mvs_task_exec_info tei;
699 struct mvs_slot_info *slot;
700 u32 tag = 0xdeadbeef, n_elem = 0;
704 struct task_status_struct *tsm = &task->task_status;
706 tsm->resp = SAS_TASK_UNDELIVERED;
707 tsm->stat = SAS_PHY_DOWN;
709 * libsas will use dev->port, should
710 * not call task_done for sata
712 if (dev->dev_type != SAS_SATA_DEV)
713 task->task_done(task);
717 if (DEV_IS_GONE(mvi_dev)) {
719 mv_dprintk("device %d not ready.\n",
722 mv_dprintk("device %016llx not ready.\n",
723 SAS_ADDR(dev->sas_addr));
728 tei.port = dev->port->lldd_port;
729 if (tei.port && !tei.port->port_attached && !tmf) {
730 if (sas_protocol_ata(task->task_proto)) {
731 struct task_status_struct *ts = &task->task_status;
732 mv_dprintk("SATA/STP port %d does not attach"
733 "device.\n", dev->port->id);
734 ts->resp = SAS_TASK_COMPLETE;
735 ts->stat = SAS_PHY_DOWN;
737 task->task_done(task);
740 struct task_status_struct *ts = &task->task_status;
741 mv_dprintk("SAS port %d does not attach"
742 "device.\n", dev->port->id);
743 ts->resp = SAS_TASK_UNDELIVERED;
744 ts->stat = SAS_PHY_DOWN;
745 task->task_done(task);
750 if (!sas_protocol_ata(task->task_proto)) {
751 if (task->num_scatter) {
752 n_elem = dma_map_sg(mvi->dev,
762 n_elem = task->num_scatter;
765 rc = mvs_tag_alloc(mvi, &tag);
769 slot = &mvi->slot_info[tag];
771 task->lldd_task = NULL;
772 slot->n_elem = n_elem;
773 slot->slot_tag = tag;
775 slot->buf = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
782 tei.hdr = &mvi->slot[tag];
785 switch (task->task_proto) {
786 case SAS_PROTOCOL_SMP:
787 rc = mvs_task_prep_smp(mvi, &tei);
789 case SAS_PROTOCOL_SSP:
790 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
792 case SAS_PROTOCOL_SATA:
793 case SAS_PROTOCOL_STP:
794 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
795 rc = mvs_task_prep_ata(mvi, &tei);
798 dev_printk(KERN_ERR, mvi->dev,
799 "unknown sas_task proto: 0x%x\n",
806 mv_dprintk("rc is %x\n", rc);
807 goto err_out_slot_buf;
810 slot->port = tei.port;
811 task->lldd_task = slot;
812 list_add_tail(&slot->entry, &tei.port->list);
813 spin_lock(&task->task_state_lock);
814 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
815 spin_unlock(&task->task_state_lock);
817 mvi_dev->running_req++;
819 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
824 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
826 mvs_tag_free(mvi, tag);
829 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
830 if (!sas_protocol_ata(task->task_proto))
832 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
838 static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
839 struct completion *completion, int is_tmf,
840 struct mvs_tmf_task *tmf)
842 struct mvs_info *mvi = NULL;
845 unsigned long flags = 0;
847 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
849 spin_lock_irqsave(&mvi->lock, flags);
850 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
852 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
855 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
856 (MVS_CHIP_SLOT_SZ - 1));
857 spin_unlock_irqrestore(&mvi->lock, flags);
862 int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
864 return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
867 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
869 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
870 mvs_tag_clear(mvi, slot_idx);
873 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
874 struct mvs_slot_info *slot, u32 slot_idx)
880 if (!sas_protocol_ata(task->task_proto))
882 dma_unmap_sg(mvi->dev, task->scatter,
883 slot->n_elem, task->data_dir);
885 switch (task->task_proto) {
886 case SAS_PROTOCOL_SMP:
887 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
889 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
893 case SAS_PROTOCOL_SATA:
894 case SAS_PROTOCOL_STP:
895 case SAS_PROTOCOL_SSP:
902 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
905 list_del_init(&slot->entry);
906 task->lldd_task = NULL;
909 slot->slot_tag = 0xFFFFFFFF;
910 mvs_slot_free(mvi, slot_idx);
913 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
915 struct mvs_phy *phy = &mvi->phy[phy_no];
916 struct mvs_port *port = phy->port;
919 for_each_phy(port->wide_port_phymap, j, no) {
921 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
923 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
924 port->wide_port_phymap);
926 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
928 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
934 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
937 struct mvs_phy *phy = &mvi->phy[i];
938 struct mvs_port *port = phy->port;
940 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
941 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
943 phy->phy_attached = 1;
948 if (phy->phy_type & PORT_TYPE_SAS) {
949 port->wide_port_phymap &= ~(1U << i);
950 if (!port->wide_port_phymap)
951 port->port_attached = 0;
952 mvs_update_wideport(mvi, i);
953 } else if (phy->phy_type & PORT_TYPE_SATA)
954 port->port_attached = 0;
956 phy->phy_attached = 0;
957 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
962 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
964 u32 *s = (u32 *) buf;
969 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
970 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
972 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
973 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
975 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
976 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
978 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
979 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
981 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
982 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
987 static u32 mvs_is_sig_fis_received(u32 irq_status)
989 return irq_status & PHYEV_SIG_FIS;
992 static void mvs_sig_remove_timer(struct mvs_phy *phy)
994 if (phy->timer.function)
995 del_timer(&phy->timer);
996 phy->timer.function = NULL;
999 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1001 struct mvs_phy *phy = &mvi->phy[i];
1002 struct sas_identify_frame *id;
1004 id = (struct sas_identify_frame *)phy->frame_rcvd;
1007 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1008 phy->phy_status = mvs_is_phy_ready(mvi, i);
1011 if (phy->phy_status) {
1013 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1015 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1017 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1018 if (phy->phy_type & PORT_TYPE_SATA) {
1019 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1020 if (mvs_is_sig_fis_received(phy->irq_status)) {
1021 mvs_sig_remove_timer(phy);
1022 phy->phy_attached = 1;
1023 phy->att_dev_sas_addr =
1024 i + mvi->id * mvi->chip->n_phy;
1026 sas_phy->oob_mode = SATA_OOB_MODE;
1027 phy->frame_rcvd_size =
1028 sizeof(struct dev_to_host_fis);
1029 mvs_get_d2h_reg(mvi, i, id);
1032 dev_printk(KERN_DEBUG, mvi->dev,
1033 "Phy%d : No sig fis\n", i);
1034 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1035 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1036 tmp | PHYEV_SIG_FIS);
1037 phy->phy_attached = 0;
1038 phy->phy_type &= ~PORT_TYPE_SATA;
1041 } else if (phy->phy_type & PORT_TYPE_SAS
1042 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1043 phy->phy_attached = 1;
1044 phy->identify.device_type =
1045 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1047 if (phy->identify.device_type == SAS_END_DEVICE)
1048 phy->identify.target_port_protocols =
1050 else if (phy->identify.device_type != SAS_PHY_UNUSED)
1051 phy->identify.target_port_protocols =
1054 sas_phy->oob_mode = SAS_OOB_MODE;
1055 phy->frame_rcvd_size =
1056 sizeof(struct sas_identify_frame);
1058 memcpy(sas_phy->attached_sas_addr,
1059 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1061 if (MVS_CHIP_DISP->phy_work_around)
1062 MVS_CHIP_DISP->phy_work_around(mvi, i);
1064 mv_dprintk("phy %d attach dev info is %x\n",
1065 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1066 mv_dprintk("phy %d attach sas addr is %llx\n",
1067 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1070 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1073 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1075 struct sas_ha_struct *sas_ha = sas_phy->ha;
1076 struct mvs_info *mvi = NULL; int i = 0, hi;
1077 struct mvs_phy *phy = sas_phy->lldd_phy;
1078 struct asd_sas_port *sas_port = sas_phy->port;
1079 struct mvs_port *port;
1080 unsigned long flags = 0;
1084 while (sas_ha->sas_phy[i]) {
1085 if (sas_ha->sas_phy[i] == sas_phy)
1089 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1090 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1091 if (i >= mvi->chip->n_phy)
1092 port = &mvi->port[i - mvi->chip->n_phy];
1094 port = &mvi->port[i];
1096 spin_lock_irqsave(&mvi->lock, flags);
1097 port->port_attached = 1;
1099 sas_port->lldd_port = port;
1100 if (phy->phy_type & PORT_TYPE_SAS) {
1101 port->wide_port_phymap = sas_port->phy_mask;
1102 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1103 mvs_update_wideport(mvi, sas_phy->id);
1105 /* direct attached SAS device */
1106 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1107 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1108 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1112 spin_unlock_irqrestore(&mvi->lock, flags);
1115 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1117 struct domain_device *dev;
1118 struct mvs_phy *phy = sas_phy->lldd_phy;
1119 struct mvs_info *mvi = phy->mvi;
1120 struct asd_sas_port *port = sas_phy->port;
1123 while (phy != &mvi->phy[phy_no]) {
1125 if (phy_no >= MVS_MAX_PHYS)
1128 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1129 mvs_do_release_task(phy->mvi, phy_no, dev);
1134 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1136 mvs_port_notify_formed(sas_phy, 1);
1139 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1141 mvs_port_notify_deformed(sas_phy, 1);
1144 static struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1147 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1148 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1149 mvi->devices[dev].device_id = dev;
1150 return &mvi->devices[dev];
1154 if (dev == MVS_MAX_DEVICES)
1155 mv_printk("max support %d devices, ignore ..\n",
1161 static void mvs_free_dev(struct mvs_device *mvi_dev)
1163 u32 id = mvi_dev->device_id;
1164 memset(mvi_dev, 0, sizeof(*mvi_dev));
1165 mvi_dev->device_id = id;
1166 mvi_dev->dev_type = SAS_PHY_UNUSED;
1167 mvi_dev->dev_status = MVS_DEV_NORMAL;
1168 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1171 static int mvs_dev_found_notify(struct domain_device *dev, int lock)
1173 unsigned long flags = 0;
1175 struct mvs_info *mvi = NULL;
1176 struct domain_device *parent_dev = dev->parent;
1177 struct mvs_device *mvi_device;
1179 mvi = mvs_find_dev_mvi(dev);
1182 spin_lock_irqsave(&mvi->lock, flags);
1184 mvi_device = mvs_alloc_dev(mvi);
1189 dev->lldd_dev = mvi_device;
1190 mvi_device->dev_status = MVS_DEV_NORMAL;
1191 mvi_device->dev_type = dev->dev_type;
1192 mvi_device->mvi_info = mvi;
1193 mvi_device->sas_device = dev;
1194 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
1196 u8 phy_num = parent_dev->ex_dev.num_phys;
1198 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1199 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1200 if (SAS_ADDR(phy->attached_sas_addr) ==
1201 SAS_ADDR(dev->sas_addr)) {
1202 mvi_device->attached_phy = phy_id;
1207 if (phy_id == phy_num) {
1208 mv_printk("Error: no attached dev:%016llx"
1210 SAS_ADDR(dev->sas_addr),
1211 SAS_ADDR(parent_dev->sas_addr));
1218 spin_unlock_irqrestore(&mvi->lock, flags);
1222 int mvs_dev_found(struct domain_device *dev)
1224 return mvs_dev_found_notify(dev, 1);
1227 static void mvs_dev_gone_notify(struct domain_device *dev)
1229 unsigned long flags = 0;
1230 struct mvs_device *mvi_dev = dev->lldd_dev;
1231 struct mvs_info *mvi;
1234 mv_dprintk("found dev has gone.\n");
1238 mvi = mvi_dev->mvi_info;
1240 spin_lock_irqsave(&mvi->lock, flags);
1242 mv_dprintk("found dev[%d:%x] is gone.\n",
1243 mvi_dev->device_id, mvi_dev->dev_type);
1244 mvs_release_task(mvi, dev);
1245 mvs_free_reg_set(mvi, mvi_dev);
1246 mvs_free_dev(mvi_dev);
1248 dev->lldd_dev = NULL;
1249 mvi_dev->sas_device = NULL;
1251 spin_unlock_irqrestore(&mvi->lock, flags);
1255 void mvs_dev_gone(struct domain_device *dev)
1257 mvs_dev_gone_notify(dev);
1260 static void mvs_task_done(struct sas_task *task)
1262 if (!del_timer(&task->slow_task->timer))
1264 complete(&task->slow_task->completion);
1267 static void mvs_tmf_timedout(struct timer_list *t)
1269 struct sas_task_slow *slow = from_timer(slow, t, timer);
1270 struct sas_task *task = slow->task;
1272 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1273 complete(&task->slow_task->completion);
1276 #define MVS_TASK_TIMEOUT 20
1277 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1278 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1281 struct sas_task *task = NULL;
1283 for (retry = 0; retry < 3; retry++) {
1284 task = sas_alloc_slow_task(GFP_KERNEL);
1289 task->task_proto = dev->tproto;
1291 memcpy(&task->ssp_task, parameter, para_len);
1292 task->task_done = mvs_task_done;
1294 task->slow_task->timer.function = mvs_tmf_timedout;
1295 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1296 add_timer(&task->slow_task->timer);
1298 res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
1301 del_timer(&task->slow_task->timer);
1302 mv_printk("executing internal task failed:%d\n", res);
1306 wait_for_completion(&task->slow_task->completion);
1307 res = TMF_RESP_FUNC_FAILED;
1308 /* Even TMF timed out, return direct. */
1309 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1310 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1311 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1316 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1317 task->task_status.stat == SAS_SAM_STAT_GOOD) {
1318 res = TMF_RESP_FUNC_COMPLETE;
1322 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1323 task->task_status.stat == SAS_DATA_UNDERRUN) {
1324 /* no error, but return the number of bytes of
1326 res = task->task_status.residual;
1330 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1331 task->task_status.stat == SAS_DATA_OVERRUN) {
1332 mv_dprintk("blocked task error.\n");
1336 mv_dprintk(" task to dev %016llx response: 0x%x "
1338 SAS_ADDR(dev->sas_addr),
1339 task->task_status.resp,
1340 task->task_status.stat);
1341 sas_free_task(task);
1347 BUG_ON(retry == 3 && task != NULL);
1348 sas_free_task(task);
1352 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1353 u8 *lun, struct mvs_tmf_task *tmf)
1355 struct sas_ssp_task ssp_task;
1356 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1357 return TMF_RESP_FUNC_ESUPP;
1359 memcpy(ssp_task.LUN, lun, 8);
1361 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1362 sizeof(ssp_task), tmf);
1366 /* Standard mandates link reset for ATA (type 0)
1367 and hard reset for SSP (type 1) , only for RECOVERY */
1368 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1371 struct sas_phy *phy = sas_get_local_phy(dev);
1372 int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1373 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1374 rc = sas_phy_reset(phy, reset_type);
1375 sas_put_local_phy(phy);
1380 /* mandatory SAM-3 */
1381 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1383 unsigned long flags;
1384 int rc = TMF_RESP_FUNC_FAILED;
1385 struct mvs_tmf_task tmf_task;
1386 struct mvs_device * mvi_dev = dev->lldd_dev;
1387 struct mvs_info *mvi = mvi_dev->mvi_info;
1389 tmf_task.tmf = TMF_LU_RESET;
1390 mvi_dev->dev_status = MVS_DEV_EH;
1391 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1392 if (rc == TMF_RESP_FUNC_COMPLETE) {
1393 spin_lock_irqsave(&mvi->lock, flags);
1394 mvs_release_task(mvi, dev);
1395 spin_unlock_irqrestore(&mvi->lock, flags);
1397 /* If failed, fall-through I_T_Nexus reset */
1398 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1399 mvi_dev->device_id, rc);
1403 int mvs_I_T_nexus_reset(struct domain_device *dev)
1405 unsigned long flags;
1406 int rc = TMF_RESP_FUNC_FAILED;
1407 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1408 struct mvs_info *mvi = mvi_dev->mvi_info;
1410 if (mvi_dev->dev_status != MVS_DEV_EH)
1411 return TMF_RESP_FUNC_COMPLETE;
1413 mvi_dev->dev_status = MVS_DEV_NORMAL;
1414 rc = mvs_debug_I_T_nexus_reset(dev);
1415 mv_printk("%s for device[%x]:rc= %d\n",
1416 __func__, mvi_dev->device_id, rc);
1418 spin_lock_irqsave(&mvi->lock, flags);
1419 mvs_release_task(mvi, dev);
1420 spin_unlock_irqrestore(&mvi->lock, flags);
1424 /* optional SAM-3 */
1425 int mvs_query_task(struct sas_task *task)
1428 struct scsi_lun lun;
1429 struct mvs_tmf_task tmf_task;
1430 int rc = TMF_RESP_FUNC_FAILED;
1432 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1433 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1434 struct domain_device *dev = task->dev;
1435 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1436 struct mvs_info *mvi = mvi_dev->mvi_info;
1438 int_to_scsilun(cmnd->device->lun, &lun);
1439 rc = mvs_find_tag(mvi, task, &tag);
1441 rc = TMF_RESP_FUNC_FAILED;
1445 tmf_task.tmf = TMF_QUERY_TASK;
1446 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1448 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1450 /* The task is still in Lun, release it then */
1451 case TMF_RESP_FUNC_SUCC:
1452 /* The task is not in Lun or failed, reset the phy */
1453 case TMF_RESP_FUNC_FAILED:
1454 case TMF_RESP_FUNC_COMPLETE:
1458 mv_printk("%s:rc= %d\n", __func__, rc);
1462 /* mandatory SAM-3, still need free task/slot info */
1463 int mvs_abort_task(struct sas_task *task)
1465 struct scsi_lun lun;
1466 struct mvs_tmf_task tmf_task;
1467 struct domain_device *dev = task->dev;
1468 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1469 struct mvs_info *mvi;
1470 int rc = TMF_RESP_FUNC_FAILED;
1471 unsigned long flags;
1475 mv_printk("Device has removed\n");
1476 return TMF_RESP_FUNC_FAILED;
1479 mvi = mvi_dev->mvi_info;
1481 spin_lock_irqsave(&task->task_state_lock, flags);
1482 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1483 spin_unlock_irqrestore(&task->task_state_lock, flags);
1484 rc = TMF_RESP_FUNC_COMPLETE;
1487 spin_unlock_irqrestore(&task->task_state_lock, flags);
1488 mvi_dev->dev_status = MVS_DEV_EH;
1489 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1490 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1492 int_to_scsilun(cmnd->device->lun, &lun);
1493 rc = mvs_find_tag(mvi, task, &tag);
1495 mv_printk("No such tag in %s\n", __func__);
1496 rc = TMF_RESP_FUNC_FAILED;
1500 tmf_task.tmf = TMF_ABORT_TASK;
1501 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1503 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1505 /* if successful, clear the task and callback forwards.*/
1506 if (rc == TMF_RESP_FUNC_COMPLETE) {
1508 struct mvs_slot_info *slot;
1510 if (task->lldd_task) {
1511 slot = task->lldd_task;
1512 slot_no = (u32) (slot - mvi->slot_info);
1513 spin_lock_irqsave(&mvi->lock, flags);
1514 mvs_slot_complete(mvi, slot_no, 1);
1515 spin_unlock_irqrestore(&mvi->lock, flags);
1519 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1520 task->task_proto & SAS_PROTOCOL_STP) {
1521 if (SAS_SATA_DEV == dev->dev_type) {
1522 struct mvs_slot_info *slot = task->lldd_task;
1523 u32 slot_idx = (u32)(slot - mvi->slot_info);
1524 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1525 "slot=%p slot_idx=x%x\n",
1526 mvi, task, slot, slot_idx);
1527 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1528 mvs_slot_task_free(mvi, task, slot, slot_idx);
1529 rc = TMF_RESP_FUNC_COMPLETE;
1535 if (rc != TMF_RESP_FUNC_COMPLETE)
1536 mv_printk("%s:rc= %d\n", __func__, rc);
1540 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1543 struct mvs_tmf_task tmf_task;
1545 tmf_task.tmf = TMF_ABORT_TASK_SET;
1546 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1551 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1553 int rc = TMF_RESP_FUNC_FAILED;
1554 struct mvs_tmf_task tmf_task;
1556 tmf_task.tmf = TMF_CLEAR_ACA;
1557 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1562 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1564 int rc = TMF_RESP_FUNC_FAILED;
1565 struct mvs_tmf_task tmf_task;
1567 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1568 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1573 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1574 u32 slot_idx, int err)
1576 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1577 struct task_status_struct *tstat = &task->task_status;
1578 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1579 int stat = SAM_STAT_GOOD;
1582 resp->frame_len = sizeof(struct dev_to_host_fis);
1583 memcpy(&resp->ending_fis[0],
1584 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1585 sizeof(struct dev_to_host_fis));
1586 tstat->buf_valid_size = sizeof(*resp);
1587 if (unlikely(err)) {
1588 if (unlikely(err & CMD_ISS_STPD))
1589 stat = SAS_OPEN_REJECT;
1591 stat = SAS_PROTO_RESPONSE;
1597 static void mvs_set_sense(u8 *buffer, int len, int d_sense,
1598 int key, int asc, int ascq)
1600 memset(buffer, 0, len);
1603 /* Descriptor format */
1605 mv_printk("Length %d of sense buffer too small to "
1606 "fit sense %x:%x:%x", len, key, asc, ascq);
1609 buffer[0] = 0x72; /* Response Code */
1611 buffer[1] = key; /* Sense Key */
1613 buffer[2] = asc; /* ASC */
1615 buffer[3] = ascq; /* ASCQ */
1618 mv_printk("Length %d of sense buffer too small to "
1619 "fit sense %x:%x:%x", len, key, asc, ascq);
1622 buffer[0] = 0x70; /* Response Code */
1624 buffer[2] = key; /* Sense Key */
1626 buffer[7] = 0x0a; /* Additional Sense Length */
1628 buffer[12] = asc; /* ASC */
1630 buffer[13] = ascq; /* ASCQ */
1636 static void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1637 u8 key, u8 asc, u8 asc_q)
1640 iu->response_data_len = 0;
1641 iu->sense_data_len = 17;
1643 mvs_set_sense(iu->sense_data, 17, 0,
1647 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1650 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1652 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1653 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1655 enum mvs_port_type type = PORT_TYPE_SAS;
1657 if (err_dw0 & CMD_ISS_STPD)
1658 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1660 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1662 stat = SAM_STAT_CHECK_CONDITION;
1663 switch (task->task_proto) {
1664 case SAS_PROTOCOL_SSP:
1666 stat = SAS_ABORTED_TASK;
1667 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1668 struct ssp_response_iu *iu = slot->response +
1669 sizeof(struct mvs_err_info);
1670 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1671 sas_ssp_task_response(mvi->dev, task, iu);
1672 stat = SAM_STAT_CHECK_CONDITION;
1674 if (err_dw1 & bit(31))
1675 mv_printk("reuse same slot, retry command.\n");
1678 case SAS_PROTOCOL_SMP:
1679 stat = SAM_STAT_CHECK_CONDITION;
1682 case SAS_PROTOCOL_SATA:
1683 case SAS_PROTOCOL_STP:
1684 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1686 task->ata_task.use_ncq = 0;
1687 stat = SAS_PROTO_RESPONSE;
1688 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1698 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1700 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1701 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1702 struct sas_task *task = slot->task;
1703 struct mvs_device *mvi_dev = NULL;
1704 struct task_status_struct *tstat;
1705 struct domain_device *dev;
1709 enum exec_status sts;
1711 if (unlikely(!task || !task->lldd_task || !task->dev))
1714 tstat = &task->task_status;
1716 mvi_dev = dev->lldd_dev;
1718 spin_lock(&task->task_state_lock);
1719 task->task_state_flags &=
1720 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1721 task->task_state_flags |= SAS_TASK_STATE_DONE;
1723 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1724 spin_unlock(&task->task_state_lock);
1726 memset(tstat, 0, sizeof(*tstat));
1727 tstat->resp = SAS_TASK_COMPLETE;
1729 if (unlikely(aborted)) {
1730 tstat->stat = SAS_ABORTED_TASK;
1731 if (mvi_dev && mvi_dev->running_req)
1732 mvi_dev->running_req--;
1733 if (sas_protocol_ata(task->task_proto))
1734 mvs_free_reg_set(mvi, mvi_dev);
1736 mvs_slot_task_free(mvi, task, slot, slot_idx);
1740 /* when no device attaching, go ahead and complete by error handling*/
1741 if (unlikely(!mvi_dev || flags)) {
1743 mv_dprintk("port has not device.\n");
1744 tstat->stat = SAS_PHY_DOWN;
1749 * error info record present; slot->response is 32 bit aligned but may
1750 * not be 64 bit aligned, so check for zero in two 32 bit reads
1752 if (unlikely((rx_desc & RXQ_ERR)
1753 && (*((u32 *)slot->response)
1754 || *(((u32 *)slot->response) + 1)))) {
1755 mv_dprintk("port %d slot %d rx_desc %X has error info"
1756 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1757 rx_desc, get_unaligned_le64(slot->response));
1758 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1759 tstat->resp = SAS_TASK_COMPLETE;
1763 switch (task->task_proto) {
1764 case SAS_PROTOCOL_SSP:
1765 /* hw says status == 0, datapres == 0 */
1766 if (rx_desc & RXQ_GOOD) {
1767 tstat->stat = SAS_SAM_STAT_GOOD;
1768 tstat->resp = SAS_TASK_COMPLETE;
1770 /* response frame present */
1771 else if (rx_desc & RXQ_RSP) {
1772 struct ssp_response_iu *iu = slot->response +
1773 sizeof(struct mvs_err_info);
1774 sas_ssp_task_response(mvi->dev, task, iu);
1776 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
1779 case SAS_PROTOCOL_SMP: {
1780 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1781 tstat->stat = SAS_SAM_STAT_GOOD;
1782 to = kmap_atomic(sg_page(sg_resp));
1783 memcpy(to + sg_resp->offset,
1784 slot->response + sizeof(struct mvs_err_info),
1785 sg_dma_len(sg_resp));
1790 case SAS_PROTOCOL_SATA:
1791 case SAS_PROTOCOL_STP:
1792 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1793 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1798 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
1801 if (!slot->port->port_attached) {
1802 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1803 tstat->stat = SAS_PHY_DOWN;
1808 if (mvi_dev && mvi_dev->running_req) {
1809 mvi_dev->running_req--;
1810 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1811 mvs_free_reg_set(mvi, mvi_dev);
1813 mvs_slot_task_free(mvi, task, slot, slot_idx);
1816 spin_unlock(&mvi->lock);
1817 if (task->task_done)
1818 task->task_done(task);
1820 spin_lock(&mvi->lock);
1825 void mvs_do_release_task(struct mvs_info *mvi,
1826 int phy_no, struct domain_device *dev)
1829 struct mvs_phy *phy;
1830 struct mvs_port *port;
1831 struct mvs_slot_info *slot, *slot2;
1833 phy = &mvi->phy[phy_no];
1837 /* clean cmpl queue in case request is already finished */
1838 mvs_int_rx(mvi, false);
1842 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1843 struct sas_task *task;
1844 slot_idx = (u32) (slot - mvi->slot_info);
1847 if (dev && task->dev != dev)
1850 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1851 slot_idx, slot->slot_tag, task);
1852 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1854 mvs_slot_complete(mvi, slot_idx, 1);
1858 void mvs_release_task(struct mvs_info *mvi,
1859 struct domain_device *dev)
1861 int i, phyno[WIDE_PORT_MAX_PHY], num;
1862 num = mvs_find_dev_phyno(dev, phyno);
1863 for (i = 0; i < num; i++)
1864 mvs_do_release_task(mvi, phyno[i], dev);
1867 static void mvs_phy_disconnected(struct mvs_phy *phy)
1869 phy->phy_attached = 0;
1870 phy->att_dev_info = 0;
1871 phy->att_dev_sas_addr = 0;
1874 static void mvs_work_queue(struct work_struct *work)
1876 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1877 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1878 struct mvs_info *mvi = mwq->mvi;
1879 unsigned long flags;
1880 u32 phy_no = (unsigned long) mwq->data;
1881 struct mvs_phy *phy = &mvi->phy[phy_no];
1882 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1884 spin_lock_irqsave(&mvi->lock, flags);
1885 if (mwq->handler & PHY_PLUG_EVENT) {
1887 if (phy->phy_event & PHY_PLUG_OUT) {
1890 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1891 phy->phy_event &= ~PHY_PLUG_OUT;
1892 if (!(tmp & PHY_READY_MASK)) {
1893 sas_phy_disconnected(sas_phy);
1894 mvs_phy_disconnected(phy);
1895 sas_notify_phy_event(sas_phy,
1896 PHYE_LOSS_OF_SIGNAL, GFP_ATOMIC);
1897 mv_dprintk("phy%d Removed Device\n", phy_no);
1899 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1900 mvs_update_phyinfo(mvi, phy_no, 1);
1901 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC);
1902 mvs_port_notify_formed(sas_phy, 0);
1903 mv_dprintk("phy%d Attached Device\n", phy_no);
1906 } else if (mwq->handler & EXP_BRCT_CHG) {
1907 phy->phy_event &= ~EXP_BRCT_CHG;
1908 sas_notify_port_event(sas_phy,
1909 PORTE_BROADCAST_RCVD, GFP_ATOMIC);
1910 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1912 list_del(&mwq->entry);
1913 spin_unlock_irqrestore(&mvi->lock, flags);
1917 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1922 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1926 mwq->handler = handler;
1927 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1928 list_add_tail(&mwq->entry, &mvi->wq_list);
1929 schedule_delayed_work(&mwq->work_q, HZ * 2);
1936 static void mvs_sig_time_out(struct timer_list *t)
1938 struct mvs_phy *phy = from_timer(phy, t, timer);
1939 struct mvs_info *mvi = phy->mvi;
1942 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1943 if (&mvi->phy[phy_no] == phy) {
1944 mv_dprintk("Get signature time out, reset phy %d\n",
1945 phy_no+mvi->id*mvi->chip->n_phy);
1946 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1951 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1954 struct mvs_phy *phy = &mvi->phy[phy_no];
1956 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1957 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1958 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1959 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1960 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1964 * events is port event now ,
1965 * we need check the interrupt status which belongs to per port.
1968 if (phy->irq_status & PHYEV_DCDR_ERR) {
1969 mv_dprintk("phy %d STP decoding error.\n",
1970 phy_no + mvi->id*mvi->chip->n_phy);
1973 if (phy->irq_status & PHYEV_POOF) {
1975 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1976 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1978 mvs_do_release_task(mvi, phy_no, NULL);
1979 phy->phy_event |= PHY_PLUG_OUT;
1980 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
1981 mvs_handle_event(mvi,
1982 (void *)(unsigned long)phy_no,
1984 ready = mvs_is_phy_ready(mvi, phy_no);
1985 if (ready || dev_sata) {
1986 if (MVS_CHIP_DISP->stp_reset)
1987 MVS_CHIP_DISP->stp_reset(mvi,
1990 MVS_CHIP_DISP->phy_reset(mvi,
1991 phy_no, MVS_SOFT_RESET);
1997 if (phy->irq_status & PHYEV_COMWAKE) {
1998 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
1999 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2000 tmp | PHYEV_SIG_FIS);
2001 if (phy->timer.function == NULL) {
2002 phy->timer.function = mvs_sig_time_out;
2003 phy->timer.expires = jiffies + 5*HZ;
2004 add_timer(&phy->timer);
2007 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2008 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2009 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2010 if (phy->phy_status) {
2012 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2013 if (phy->phy_type & PORT_TYPE_SATA) {
2014 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2016 tmp &= ~PHYEV_SIG_FIS;
2017 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2020 mvs_update_phyinfo(mvi, phy_no, 0);
2021 if (phy->phy_type & PORT_TYPE_SAS) {
2022 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2026 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC);
2027 /* whether driver is going to handle hot plug */
2028 if (phy->phy_event & PHY_PLUG_OUT) {
2029 mvs_port_notify_formed(&phy->sas_phy, 0);
2030 phy->phy_event &= ~PHY_PLUG_OUT;
2033 mv_dprintk("plugin interrupt but phy%d is gone\n",
2034 phy_no + mvi->id*mvi->chip->n_phy);
2036 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2037 mv_dprintk("phy %d broadcast change.\n",
2038 phy_no + mvi->id*mvi->chip->n_phy);
2039 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2044 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2046 u32 rx_prod_idx, rx_desc;
2049 /* the first dword in the RX ring is special: it contains
2050 * a mirror of the hardware's RX producer index, so that
2051 * we don't have to stall the CPU reading that register.
2052 * The actual RX ring is offset by one dword, due to this.
2054 rx_prod_idx = mvi->rx_cons;
2055 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2056 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2059 /* The CMPL_Q may come late, read from register and try again
2060 * note: if coalescing is enabled,
2061 * it will need to read from register every time for sure
2063 if (unlikely(mvi->rx_cons == rx_prod_idx))
2064 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2066 if (mvi->rx_cons == rx_prod_idx)
2069 while (mvi->rx_cons != rx_prod_idx) {
2070 /* increment our internal RX consumer pointer */
2071 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2072 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2074 if (likely(rx_desc & RXQ_DONE))
2075 mvs_slot_complete(mvi, rx_desc, 0);
2076 if (rx_desc & RXQ_ATTN) {
2078 } else if (rx_desc & RXQ_ERR) {
2079 if (!(rx_desc & RXQ_DONE))
2080 mvs_slot_complete(mvi, rx_desc, 0);
2081 } else if (rx_desc & RXQ_SLOT_RESET) {
2082 mvs_slot_free(mvi, rx_desc);
2086 if (attn && self_clear)
2087 MVS_CHIP_DISP->int_full(mvi);
2091 int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index,
2092 u8 reg_count, u8 *write_data)
2094 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
2095 struct mvs_info *mvi = mvs_prv->mvi[0];
2097 if (MVS_CHIP_DISP->gpio_write) {
2098 return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type,
2099 reg_index, reg_count, write_data);