2 * Marvell 88SE64xx/88SE94xx main function
4 * Copyright 2007 Red Hat, Inc.
5 * Copyright 2008 Marvell. <kewei@marvell.com>
6 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
8 * This file is licensed under GPLv2.
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
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.
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
28 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
30 if (task->lldd_task) {
31 struct mvs_slot_info *slot;
32 slot = task->lldd_task;
33 *tag = slot->slot_tag;
39 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
41 void *bitmap = mvi->tags;
42 clear_bit(tag, bitmap);
45 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
47 mvs_tag_clear(mvi, tag);
50 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
52 void *bitmap = mvi->tags;
56 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
58 unsigned int index, tag;
59 void *bitmap = mvi->tags;
61 index = find_first_zero_bit(bitmap, mvi->tags_num);
63 if (tag >= mvi->tags_num)
64 return -SAS_QUEUE_FULL;
65 mvs_tag_set(mvi, tag);
70 void mvs_tag_init(struct mvs_info *mvi)
73 for (i = 0; i < mvi->tags_num; ++i)
74 mvs_tag_clear(mvi, i);
77 struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
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;
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);
89 while (sha->sas_phy[j]) {
90 if (sha->sas_phy[j] == phy)
98 hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
99 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
105 int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
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;
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) {
118 while (sha->sas_phy[j]) {
119 if (sha->sas_phy[j] == phy)
123 phyno[n] = (j >= mvi->chip->n_phy) ?
124 (j - mvi->chip->n_phy) : j;
135 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
139 for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
140 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
143 if (mvi->devices[dev_no].taskfileset == reg_set)
144 return &mvi->devices[dev_no];
149 static inline void mvs_free_reg_set(struct mvs_info *mvi,
150 struct mvs_device *dev)
153 mv_printk("device has been free.\n");
156 if (dev->taskfileset == MVS_ID_NOT_MAPPED)
158 MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
161 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
162 struct mvs_device *dev)
164 if (dev->taskfileset != MVS_ID_NOT_MAPPED)
166 return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
169 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
172 for_each_phy(phy_mask, phy_mask, no) {
175 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
179 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
182 int rc = 0, phy_id = sas_phy->id;
184 struct sas_ha_struct *sha = sas_phy->ha;
185 struct mvs_info *mvi = NULL;
187 while (sha->sas_phy[i]) {
188 if (sha->sas_phy[i] == sas_phy)
192 hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
193 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
196 case PHY_FUNC_SET_LINK_RATE:
197 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
200 case PHY_FUNC_HARD_RESET:
201 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
202 if (tmp & PHY_RST_HARD)
204 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
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);
212 case PHY_FUNC_DISABLE:
213 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
215 case PHY_FUNC_RELEASE_SPINUP_HOLD:
223 void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
224 u32 off_hi, u64 sas_addr)
226 u32 lo = (u32)sas_addr;
227 u32 hi = (u32)(sas_addr>>32);
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);
235 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
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)
243 if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
244 && phy->phy_type & PORT_TYPE_SAS) {
249 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
252 struct sas_phy *sphy = sas_phy->phy;
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();
261 if (phy->phy_type & PORT_TYPE_SAS) {
262 struct sas_identify_frame *id;
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;
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);
274 } else if (phy->phy_type & PORT_TYPE_SATA) {
277 mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
279 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
281 mvi->sas->notify_port_event(sas_phy,
285 void mvs_scan_start(struct Scsi_Host *shost)
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;
293 core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
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);
300 mvs_prv->scan_finished = 1;
303 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
305 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
306 struct mvs_prv_info *mvs_prv = sha->lldd_ha;
308 if (mvs_prv->scan_finished == 0)
315 static int mvs_task_prep_smp(struct mvs_info *mvi,
316 struct mvs_task_exec_info *tei)
319 struct sas_ha_struct *sha = mvi->sas;
320 struct sas_task *task = tei->task;
321 struct mvs_cmd_hdr *hdr = tei->hdr;
322 struct domain_device *dev = task->dev;
323 struct asd_sas_port *sas_port = dev->port;
324 struct sas_phy *sphy = dev->phy;
325 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
326 struct scatterlist *sg_req, *sg_resp;
327 u32 req_len, resp_len, tag = tei->tag;
330 dma_addr_t buf_tmp_dma;
332 struct mvs_slot_info *slot = &mvi->slot_info[tag];
333 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
336 * DMA-map SMP request, response buffers
338 sg_req = &task->smp_task.smp_req;
339 elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
342 req_len = sg_dma_len(sg_req);
344 sg_resp = &task->smp_task.smp_resp;
345 elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
350 resp_len = SB_RFB_MAX;
352 /* must be in dwords */
353 if ((req_len & 0x3) || (resp_len & 0x3)) {
359 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
362 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
364 buf_tmp_dma = slot->buf_dma;
366 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
368 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
370 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
372 buf_tmp += MVS_OAF_SZ;
373 buf_tmp_dma += MVS_OAF_SZ;
375 /* region 3: PRD table *********************************** */
378 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
382 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
386 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
387 slot->response = buf_tmp;
388 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
389 if (mvi->flags & MVF_FLAG_SOC)
390 hdr->reserved[0] = 0;
393 * Fill in TX ring and command slot header
395 slot->tx = mvi->tx_prod;
396 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
398 (MVS_PHY_ID << TXQ_PHY_SHIFT));
401 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
402 hdr->tags = cpu_to_le32(tag);
405 /* generate open address frame hdr (first 12 bytes) */
406 /* initiator, SMP, ftype 1h */
407 buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
408 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
409 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
410 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
412 /* fill in PRD (scatter/gather) table, if any */
413 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
418 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
421 dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
426 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
428 struct ata_queued_cmd *qc = task->uldd_task;
431 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
432 qc->tf.command == ATA_CMD_FPDMA_READ) {
441 static int mvs_task_prep_ata(struct mvs_info *mvi,
442 struct mvs_task_exec_info *tei)
444 struct sas_ha_struct *sha = mvi->sas;
445 struct sas_task *task = tei->task;
446 struct domain_device *dev = task->dev;
447 struct mvs_device *mvi_dev = dev->lldd_dev;
448 struct mvs_cmd_hdr *hdr = tei->hdr;
449 struct asd_sas_port *sas_port = dev->port;
450 struct sas_phy *sphy = dev->phy;
451 struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
452 struct mvs_slot_info *slot;
454 u32 tag = tei->tag, hdr_tag;
457 u8 *buf_cmd, *buf_oaf;
458 dma_addr_t buf_tmp_dma;
459 u32 i, req_len, resp_len;
460 const u32 max_resp_len = SB_RFB_MAX;
462 if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
463 mv_dprintk("Have not enough regiset for dev %d.\n",
467 slot = &mvi->slot_info[tag];
468 slot->tx = mvi->tx_prod;
469 del_q = TXQ_MODE_I | tag |
470 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
471 (MVS_PHY_ID << TXQ_PHY_SHIFT) |
472 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
473 mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
475 if (task->data_dir == DMA_FROM_DEVICE)
476 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
478 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
480 if (task->ata_task.use_ncq)
482 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
483 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
487 hdr->flags = cpu_to_le32(flags);
489 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
490 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
494 hdr->tags = cpu_to_le32(hdr_tag);
496 hdr->data_len = cpu_to_le32(task->total_xfer_len);
499 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
502 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
503 buf_cmd = buf_tmp = slot->buf;
504 buf_tmp_dma = slot->buf_dma;
506 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
508 buf_tmp += MVS_ATA_CMD_SZ;
509 buf_tmp_dma += MVS_ATA_CMD_SZ;
511 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
512 /* used for STP. unused for SATA? */
514 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
516 buf_tmp += MVS_OAF_SZ;
517 buf_tmp_dma += MVS_OAF_SZ;
519 /* region 3: PRD table ********************************************* */
523 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
526 i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
531 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
532 slot->response = buf_tmp;
533 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
534 if (mvi->flags & MVF_FLAG_SOC)
535 hdr->reserved[0] = 0;
537 req_len = sizeof(struct host_to_dev_fis);
538 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
539 sizeof(struct mvs_err_info) - i;
541 /* request, response lengths */
542 resp_len = min(resp_len, max_resp_len);
543 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
545 if (likely(!task->ata_task.device_control_reg_update))
546 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
547 /* fill in command FIS and ATAPI CDB */
548 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
549 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
550 memcpy(buf_cmd + STP_ATAPI_CMD,
551 task->ata_task.atapi_packet, 16);
553 /* generate open address frame hdr (first 12 bytes) */
554 /* initiator, STP, ftype 1h */
555 buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
556 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
557 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
558 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
560 /* fill in PRD (scatter/gather) table, if any */
561 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
563 if (task->data_dir == DMA_FROM_DEVICE)
564 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
565 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
570 static int mvs_task_prep_ssp(struct mvs_info *mvi,
571 struct mvs_task_exec_info *tei, int is_tmf,
572 struct mvs_tmf_task *tmf)
574 struct sas_task *task = tei->task;
575 struct mvs_cmd_hdr *hdr = tei->hdr;
576 struct mvs_port *port = tei->port;
577 struct domain_device *dev = task->dev;
578 struct mvs_device *mvi_dev = dev->lldd_dev;
579 struct asd_sas_port *sas_port = dev->port;
580 struct mvs_slot_info *slot;
582 struct ssp_frame_hdr *ssp_hdr;
584 u8 *buf_cmd, *buf_oaf, fburst = 0;
585 dma_addr_t buf_tmp_dma;
587 u32 resp_len, req_len, i, tag = tei->tag;
588 const u32 max_resp_len = SB_RFB_MAX;
591 slot = &mvi->slot_info[tag];
593 phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
594 sas_port->phy_mask) & TXQ_PHY_MASK;
596 slot->tx = mvi->tx_prod;
597 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
598 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
599 (phy_mask << TXQ_PHY_SHIFT));
602 if (task->ssp_task.enable_first_burst) {
607 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
609 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
611 hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
612 hdr->tags = cpu_to_le32(tag);
613 hdr->data_len = cpu_to_le32(task->total_xfer_len);
616 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
619 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
620 buf_cmd = buf_tmp = slot->buf;
621 buf_tmp_dma = slot->buf_dma;
623 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
625 buf_tmp += MVS_SSP_CMD_SZ;
626 buf_tmp_dma += MVS_SSP_CMD_SZ;
628 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
630 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
632 buf_tmp += MVS_OAF_SZ;
633 buf_tmp_dma += MVS_OAF_SZ;
635 /* region 3: PRD table ********************************************* */
638 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
642 i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
646 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
647 slot->response = buf_tmp;
648 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
649 if (mvi->flags & MVF_FLAG_SOC)
650 hdr->reserved[0] = 0;
652 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
653 sizeof(struct mvs_err_info) - i;
654 resp_len = min(resp_len, max_resp_len);
656 req_len = sizeof(struct ssp_frame_hdr) + 28;
658 /* request, response lengths */
659 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
661 /* generate open address frame hdr (first 12 bytes) */
662 /* initiator, SSP, ftype 1h */
663 buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
664 buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
665 *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
666 memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
668 /* fill in SSP frame header (Command Table.SSP frame header) */
669 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
672 ssp_hdr->frame_type = SSP_TASK;
674 ssp_hdr->frame_type = SSP_COMMAND;
676 memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
677 HASHED_SAS_ADDR_SIZE);
678 memcpy(ssp_hdr->hashed_src_addr,
679 dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
680 ssp_hdr->tag = cpu_to_be16(tag);
682 /* fill in IU for TASK and Command Frame */
683 buf_cmd += sizeof(*ssp_hdr);
684 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
686 if (ssp_hdr->frame_type != SSP_TASK) {
687 buf_cmd[9] = fburst | task->ssp_task.task_attr |
688 (task->ssp_task.task_prio << 3);
689 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
691 buf_cmd[10] = tmf->tmf;
696 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
698 tmf->tag_of_task_to_be_managed & 0xff;
704 /* fill in PRD (scatter/gather) table, if any */
705 MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
709 #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE)))
710 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
711 struct mvs_tmf_task *tmf, int *pass)
713 struct domain_device *dev = task->dev;
714 struct mvs_device *mvi_dev = dev->lldd_dev;
715 struct mvs_task_exec_info tei;
716 struct mvs_slot_info *slot;
717 u32 tag = 0xdeadbeef, n_elem = 0;
721 struct task_status_struct *tsm = &task->task_status;
723 tsm->resp = SAS_TASK_UNDELIVERED;
724 tsm->stat = SAS_PHY_DOWN;
726 * libsas will use dev->port, should
727 * not call task_done for sata
729 if (dev->dev_type != SATA_DEV)
730 task->task_done(task);
734 if (DEV_IS_GONE(mvi_dev)) {
736 mv_dprintk("device %d not ready.\n",
739 mv_dprintk("device %016llx not ready.\n",
740 SAS_ADDR(dev->sas_addr));
745 tei.port = dev->port->lldd_port;
746 if (tei.port && !tei.port->port_attached && !tmf) {
747 if (sas_protocol_ata(task->task_proto)) {
748 struct task_status_struct *ts = &task->task_status;
749 mv_dprintk("SATA/STP port %d does not attach"
750 "device.\n", dev->port->id);
751 ts->resp = SAS_TASK_COMPLETE;
752 ts->stat = SAS_PHY_DOWN;
754 task->task_done(task);
757 struct task_status_struct *ts = &task->task_status;
758 mv_dprintk("SAS port %d does not attach"
759 "device.\n", dev->port->id);
760 ts->resp = SAS_TASK_UNDELIVERED;
761 ts->stat = SAS_PHY_DOWN;
762 task->task_done(task);
767 if (!sas_protocol_ata(task->task_proto)) {
768 if (task->num_scatter) {
769 n_elem = dma_map_sg(mvi->dev,
779 n_elem = task->num_scatter;
782 rc = mvs_tag_alloc(mvi, &tag);
786 slot = &mvi->slot_info[tag];
788 task->lldd_task = NULL;
789 slot->n_elem = n_elem;
790 slot->slot_tag = tag;
792 slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
795 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
798 tei.hdr = &mvi->slot[tag];
801 switch (task->task_proto) {
802 case SAS_PROTOCOL_SMP:
803 rc = mvs_task_prep_smp(mvi, &tei);
805 case SAS_PROTOCOL_SSP:
806 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
808 case SAS_PROTOCOL_SATA:
809 case SAS_PROTOCOL_STP:
810 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
811 rc = mvs_task_prep_ata(mvi, &tei);
814 dev_printk(KERN_ERR, mvi->dev,
815 "unknown sas_task proto: 0x%x\n",
822 mv_dprintk("rc is %x\n", rc);
823 goto err_out_slot_buf;
826 slot->port = tei.port;
827 task->lldd_task = slot;
828 list_add_tail(&slot->entry, &tei.port->list);
829 spin_lock(&task->task_state_lock);
830 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
831 spin_unlock(&task->task_state_lock);
833 mvi_dev->running_req++;
835 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
840 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
842 mvs_tag_free(mvi, tag);
845 dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
846 if (!sas_protocol_ata(task->task_proto))
848 dma_unmap_sg(mvi->dev, task->scatter, n_elem,
854 static struct mvs_task_list *mvs_task_alloc_list(int *num, gfp_t gfp_flags)
856 struct mvs_task_list *first = NULL;
858 for (; *num > 0; --*num) {
859 struct mvs_task_list *mvs_list = kmem_cache_zalloc(mvs_task_list_cache, gfp_flags);
864 INIT_LIST_HEAD(&mvs_list->list);
868 list_add_tail(&mvs_list->list, &first->list);
875 static inline void mvs_task_free_list(struct mvs_task_list *mvs_list)
878 struct list_head *pos, *a;
879 struct mvs_task_list *mlist = NULL;
881 __list_add(&list, mvs_list->list.prev, &mvs_list->list);
883 list_for_each_safe(pos, a, &list) {
885 mlist = list_entry(pos, struct mvs_task_list, list);
886 kmem_cache_free(mvs_task_list_cache, mlist);
890 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
891 struct completion *completion, int is_tmf,
892 struct mvs_tmf_task *tmf)
894 struct mvs_info *mvi = NULL;
897 unsigned long flags = 0;
899 mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
901 spin_lock_irqsave(&mvi->lock, flags);
902 rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
904 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
907 MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
908 (MVS_CHIP_SLOT_SZ - 1));
909 spin_unlock_irqrestore(&mvi->lock, flags);
914 static int mvs_collector_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
915 struct completion *completion, int is_tmf,
916 struct mvs_tmf_task *tmf)
918 struct domain_device *dev = task->dev;
919 struct mvs_prv_info *mpi = dev->port->ha->lldd_ha;
920 struct mvs_info *mvi = NULL;
921 struct sas_task *t = task;
922 struct mvs_task_list *mvs_list = NULL, *a;
927 unsigned long flags = 0;
929 mvs_list = mvs_task_alloc_list(&n, gfp_flags);
931 printk(KERN_ERR "%s: mvs alloc list failed.\n", __func__);
936 __list_add(&q, mvs_list->list.prev, &mvs_list->list);
938 list_for_each_entry(a, &q, list) {
940 t = list_entry(t->list.next, struct sas_task, list);
943 list_for_each_entry(a, &q , list) {
946 mvi = ((struct mvs_device *)t->dev->lldd_dev)->mvi_info;
948 spin_lock_irqsave(&mvi->lock, flags);
949 rc = mvs_task_prep(t, mvi, is_tmf, tmf, &pass[mvi->id]);
951 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
952 spin_unlock_irqrestore(&mvi->lock, flags);
956 MVS_CHIP_DISP->start_delivery(mpi->mvi[0],
957 (mpi->mvi[0]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
960 MVS_CHIP_DISP->start_delivery(mpi->mvi[1],
961 (mpi->mvi[1]->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
967 mvs_task_free_list(mvs_list);
972 int mvs_queue_command(struct sas_task *task, const int num,
975 struct mvs_device *mvi_dev = task->dev->lldd_dev;
976 struct sas_ha_struct *sas = mvi_dev->mvi_info->sas;
978 if (sas->lldd_max_execute_num < 2)
979 return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL);
981 return mvs_collector_task_exec(task, num, gfp_flags, NULL, 0, NULL);
984 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
986 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
987 mvs_tag_clear(mvi, slot_idx);
990 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
991 struct mvs_slot_info *slot, u32 slot_idx)
995 if (!sas_protocol_ata(task->task_proto))
997 dma_unmap_sg(mvi->dev, task->scatter,
998 slot->n_elem, task->data_dir);
1000 switch (task->task_proto) {
1001 case SAS_PROTOCOL_SMP:
1002 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
1003 PCI_DMA_FROMDEVICE);
1004 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
1008 case SAS_PROTOCOL_SATA:
1009 case SAS_PROTOCOL_STP:
1010 case SAS_PROTOCOL_SSP:
1017 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
1020 list_del_init(&slot->entry);
1021 task->lldd_task = NULL;
1024 slot->slot_tag = 0xFFFFFFFF;
1025 mvs_slot_free(mvi, slot_idx);
1028 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
1030 struct mvs_phy *phy = &mvi->phy[phy_no];
1031 struct mvs_port *port = phy->port;
1034 for_each_phy(port->wide_port_phymap, j, no) {
1036 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1038 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1039 port->wide_port_phymap);
1041 MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1043 MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1049 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
1052 struct mvs_phy *phy = &mvi->phy[i];
1053 struct mvs_port *port = phy->port;
1055 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
1056 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
1058 phy->phy_attached = 1;
1063 if (phy->phy_type & PORT_TYPE_SAS) {
1064 port->wide_port_phymap &= ~(1U << i);
1065 if (!port->wide_port_phymap)
1066 port->port_attached = 0;
1067 mvs_update_wideport(mvi, i);
1068 } else if (phy->phy_type & PORT_TYPE_SATA)
1069 port->port_attached = 0;
1071 phy->phy_attached = 0;
1072 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1077 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
1079 u32 *s = (u32 *) buf;
1084 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
1085 s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1087 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
1088 s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1090 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
1091 s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1093 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
1094 s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
1096 if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
1097 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1102 static u32 mvs_is_sig_fis_received(u32 irq_status)
1104 return irq_status & PHYEV_SIG_FIS;
1107 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1109 if (phy->timer.function)
1110 del_timer(&phy->timer);
1111 phy->timer.function = NULL;
1114 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1116 struct mvs_phy *phy = &mvi->phy[i];
1117 struct sas_identify_frame *id;
1119 id = (struct sas_identify_frame *)phy->frame_rcvd;
1122 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1123 phy->phy_status = mvs_is_phy_ready(mvi, i);
1126 if (phy->phy_status) {
1128 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1130 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1132 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1133 if (phy->phy_type & PORT_TYPE_SATA) {
1134 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1135 if (mvs_is_sig_fis_received(phy->irq_status)) {
1136 mvs_sig_remove_timer(phy);
1137 phy->phy_attached = 1;
1138 phy->att_dev_sas_addr =
1139 i + mvi->id * mvi->chip->n_phy;
1141 sas_phy->oob_mode = SATA_OOB_MODE;
1142 phy->frame_rcvd_size =
1143 sizeof(struct dev_to_host_fis);
1144 mvs_get_d2h_reg(mvi, i, id);
1147 dev_printk(KERN_DEBUG, mvi->dev,
1148 "Phy%d : No sig fis\n", i);
1149 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1150 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1151 tmp | PHYEV_SIG_FIS);
1152 phy->phy_attached = 0;
1153 phy->phy_type &= ~PORT_TYPE_SATA;
1156 } else if (phy->phy_type & PORT_TYPE_SAS
1157 || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1158 phy->phy_attached = 1;
1159 phy->identify.device_type =
1160 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1162 if (phy->identify.device_type == SAS_END_DEV)
1163 phy->identify.target_port_protocols =
1165 else if (phy->identify.device_type != NO_DEVICE)
1166 phy->identify.target_port_protocols =
1169 sas_phy->oob_mode = SAS_OOB_MODE;
1170 phy->frame_rcvd_size =
1171 sizeof(struct sas_identify_frame);
1173 memcpy(sas_phy->attached_sas_addr,
1174 &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1176 if (MVS_CHIP_DISP->phy_work_around)
1177 MVS_CHIP_DISP->phy_work_around(mvi, i);
1179 mv_dprintk("phy %d attach dev info is %x\n",
1180 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1181 mv_dprintk("phy %d attach sas addr is %llx\n",
1182 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1185 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1188 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1190 struct sas_ha_struct *sas_ha = sas_phy->ha;
1191 struct mvs_info *mvi = NULL; int i = 0, hi;
1192 struct mvs_phy *phy = sas_phy->lldd_phy;
1193 struct asd_sas_port *sas_port = sas_phy->port;
1194 struct mvs_port *port;
1195 unsigned long flags = 0;
1199 while (sas_ha->sas_phy[i]) {
1200 if (sas_ha->sas_phy[i] == sas_phy)
1204 hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1205 mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1206 if (i >= mvi->chip->n_phy)
1207 port = &mvi->port[i - mvi->chip->n_phy];
1209 port = &mvi->port[i];
1211 spin_lock_irqsave(&mvi->lock, flags);
1212 port->port_attached = 1;
1214 sas_port->lldd_port = port;
1215 if (phy->phy_type & PORT_TYPE_SAS) {
1216 port->wide_port_phymap = sas_port->phy_mask;
1217 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1218 mvs_update_wideport(mvi, sas_phy->id);
1220 /* direct attached SAS device */
1221 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1222 MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1223 MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1227 spin_unlock_irqrestore(&mvi->lock, flags);
1230 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1232 struct domain_device *dev;
1233 struct mvs_phy *phy = sas_phy->lldd_phy;
1234 struct mvs_info *mvi = phy->mvi;
1235 struct asd_sas_port *port = sas_phy->port;
1238 while (phy != &mvi->phy[phy_no]) {
1240 if (phy_no >= MVS_MAX_PHYS)
1243 list_for_each_entry(dev, &port->dev_list, dev_list_node)
1244 mvs_do_release_task(phy->mvi, phy_no, dev);
1249 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1251 mvs_port_notify_formed(sas_phy, 1);
1254 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1256 mvs_port_notify_deformed(sas_phy, 1);
1259 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1262 for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1263 if (mvi->devices[dev].dev_type == NO_DEVICE) {
1264 mvi->devices[dev].device_id = dev;
1265 return &mvi->devices[dev];
1269 if (dev == MVS_MAX_DEVICES)
1270 mv_printk("max support %d devices, ignore ..\n",
1276 void mvs_free_dev(struct mvs_device *mvi_dev)
1278 u32 id = mvi_dev->device_id;
1279 memset(mvi_dev, 0, sizeof(*mvi_dev));
1280 mvi_dev->device_id = id;
1281 mvi_dev->dev_type = NO_DEVICE;
1282 mvi_dev->dev_status = MVS_DEV_NORMAL;
1283 mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1286 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1288 unsigned long flags = 0;
1290 struct mvs_info *mvi = NULL;
1291 struct domain_device *parent_dev = dev->parent;
1292 struct mvs_device *mvi_device;
1294 mvi = mvs_find_dev_mvi(dev);
1297 spin_lock_irqsave(&mvi->lock, flags);
1299 mvi_device = mvs_alloc_dev(mvi);
1304 dev->lldd_dev = mvi_device;
1305 mvi_device->dev_status = MVS_DEV_NORMAL;
1306 mvi_device->dev_type = dev->dev_type;
1307 mvi_device->mvi_info = mvi;
1308 mvi_device->sas_device = dev;
1309 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1311 u8 phy_num = parent_dev->ex_dev.num_phys;
1313 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1314 phy = &parent_dev->ex_dev.ex_phy[phy_id];
1315 if (SAS_ADDR(phy->attached_sas_addr) ==
1316 SAS_ADDR(dev->sas_addr)) {
1317 mvi_device->attached_phy = phy_id;
1322 if (phy_id == phy_num) {
1323 mv_printk("Error: no attached dev:%016llx"
1325 SAS_ADDR(dev->sas_addr),
1326 SAS_ADDR(parent_dev->sas_addr));
1333 spin_unlock_irqrestore(&mvi->lock, flags);
1337 int mvs_dev_found(struct domain_device *dev)
1339 return mvs_dev_found_notify(dev, 1);
1342 void mvs_dev_gone_notify(struct domain_device *dev)
1344 unsigned long flags = 0;
1345 struct mvs_device *mvi_dev = dev->lldd_dev;
1346 struct mvs_info *mvi = mvi_dev->mvi_info;
1348 spin_lock_irqsave(&mvi->lock, flags);
1351 mv_dprintk("found dev[%d:%x] is gone.\n",
1352 mvi_dev->device_id, mvi_dev->dev_type);
1353 mvs_release_task(mvi, dev);
1354 mvs_free_reg_set(mvi, mvi_dev);
1355 mvs_free_dev(mvi_dev);
1357 mv_dprintk("found dev has gone.\n");
1359 dev->lldd_dev = NULL;
1360 mvi_dev->sas_device = NULL;
1362 spin_unlock_irqrestore(&mvi->lock, flags);
1366 void mvs_dev_gone(struct domain_device *dev)
1368 mvs_dev_gone_notify(dev);
1371 static void mvs_task_done(struct sas_task *task)
1373 if (!del_timer(&task->slow_task->timer))
1375 complete(&task->slow_task->completion);
1378 static void mvs_tmf_timedout(unsigned long data)
1380 struct sas_task *task = (struct sas_task *)data;
1382 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1383 complete(&task->slow_task->completion);
1386 #define MVS_TASK_TIMEOUT 20
1387 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1388 void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1391 struct sas_task *task = NULL;
1393 for (retry = 0; retry < 3; retry++) {
1394 task = sas_alloc_slow_task(GFP_KERNEL);
1399 task->task_proto = dev->tproto;
1401 memcpy(&task->ssp_task, parameter, para_len);
1402 task->task_done = mvs_task_done;
1404 task->slow_task->timer.data = (unsigned long) task;
1405 task->slow_task->timer.function = mvs_tmf_timedout;
1406 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1407 add_timer(&task->slow_task->timer);
1409 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1412 del_timer(&task->slow_task->timer);
1413 mv_printk("executing internel task failed:%d\n", res);
1417 wait_for_completion(&task->slow_task->completion);
1418 res = TMF_RESP_FUNC_FAILED;
1419 /* Even TMF timed out, return direct. */
1420 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1421 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1422 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1427 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1428 task->task_status.stat == SAM_STAT_GOOD) {
1429 res = TMF_RESP_FUNC_COMPLETE;
1433 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1434 task->task_status.stat == SAS_DATA_UNDERRUN) {
1435 /* no error, but return the number of bytes of
1437 res = task->task_status.residual;
1441 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1442 task->task_status.stat == SAS_DATA_OVERRUN) {
1443 mv_dprintk("blocked task error.\n");
1447 mv_dprintk(" task to dev %016llx response: 0x%x "
1449 SAS_ADDR(dev->sas_addr),
1450 task->task_status.resp,
1451 task->task_status.stat);
1452 sas_free_task(task);
1458 BUG_ON(retry == 3 && task != NULL);
1459 sas_free_task(task);
1463 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1464 u8 *lun, struct mvs_tmf_task *tmf)
1466 struct sas_ssp_task ssp_task;
1467 if (!(dev->tproto & SAS_PROTOCOL_SSP))
1468 return TMF_RESP_FUNC_ESUPP;
1470 memcpy(ssp_task.LUN, lun, 8);
1472 return mvs_exec_internal_tmf_task(dev, &ssp_task,
1473 sizeof(ssp_task), tmf);
1477 /* Standard mandates link reset for ATA (type 0)
1478 and hard reset for SSP (type 1) , only for RECOVERY */
1479 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1482 struct sas_phy *phy = sas_get_local_phy(dev);
1483 int reset_type = (dev->dev_type == SATA_DEV ||
1484 (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1485 rc = sas_phy_reset(phy, reset_type);
1486 sas_put_local_phy(phy);
1491 /* mandatory SAM-3 */
1492 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1494 unsigned long flags;
1495 int rc = TMF_RESP_FUNC_FAILED;
1496 struct mvs_tmf_task tmf_task;
1497 struct mvs_device * mvi_dev = dev->lldd_dev;
1498 struct mvs_info *mvi = mvi_dev->mvi_info;
1500 tmf_task.tmf = TMF_LU_RESET;
1501 mvi_dev->dev_status = MVS_DEV_EH;
1502 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1503 if (rc == TMF_RESP_FUNC_COMPLETE) {
1504 spin_lock_irqsave(&mvi->lock, flags);
1505 mvs_release_task(mvi, dev);
1506 spin_unlock_irqrestore(&mvi->lock, flags);
1508 /* If failed, fall-through I_T_Nexus reset */
1509 mv_printk("%s for device[%x]:rc= %d\n", __func__,
1510 mvi_dev->device_id, rc);
1514 int mvs_I_T_nexus_reset(struct domain_device *dev)
1516 unsigned long flags;
1517 int rc = TMF_RESP_FUNC_FAILED;
1518 struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1519 struct mvs_info *mvi = mvi_dev->mvi_info;
1521 if (mvi_dev->dev_status != MVS_DEV_EH)
1522 return TMF_RESP_FUNC_COMPLETE;
1524 mvi_dev->dev_status = MVS_DEV_NORMAL;
1525 rc = mvs_debug_I_T_nexus_reset(dev);
1526 mv_printk("%s for device[%x]:rc= %d\n",
1527 __func__, mvi_dev->device_id, rc);
1529 spin_lock_irqsave(&mvi->lock, flags);
1530 mvs_release_task(mvi, dev);
1531 spin_unlock_irqrestore(&mvi->lock, flags);
1535 /* optional SAM-3 */
1536 int mvs_query_task(struct sas_task *task)
1539 struct scsi_lun lun;
1540 struct mvs_tmf_task tmf_task;
1541 int rc = TMF_RESP_FUNC_FAILED;
1543 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1544 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1545 struct domain_device *dev = task->dev;
1546 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1547 struct mvs_info *mvi = mvi_dev->mvi_info;
1549 int_to_scsilun(cmnd->device->lun, &lun);
1550 rc = mvs_find_tag(mvi, task, &tag);
1552 rc = TMF_RESP_FUNC_FAILED;
1556 tmf_task.tmf = TMF_QUERY_TASK;
1557 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1559 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1561 /* The task is still in Lun, release it then */
1562 case TMF_RESP_FUNC_SUCC:
1563 /* The task is not in Lun or failed, reset the phy */
1564 case TMF_RESP_FUNC_FAILED:
1565 case TMF_RESP_FUNC_COMPLETE:
1569 mv_printk("%s:rc= %d\n", __func__, rc);
1573 /* mandatory SAM-3, still need free task/slot info */
1574 int mvs_abort_task(struct sas_task *task)
1576 struct scsi_lun lun;
1577 struct mvs_tmf_task tmf_task;
1578 struct domain_device *dev = task->dev;
1579 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1580 struct mvs_info *mvi;
1581 int rc = TMF_RESP_FUNC_FAILED;
1582 unsigned long flags;
1586 mv_printk("Device has removed\n");
1587 return TMF_RESP_FUNC_FAILED;
1590 mvi = mvi_dev->mvi_info;
1592 spin_lock_irqsave(&task->task_state_lock, flags);
1593 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1594 spin_unlock_irqrestore(&task->task_state_lock, flags);
1595 rc = TMF_RESP_FUNC_COMPLETE;
1598 spin_unlock_irqrestore(&task->task_state_lock, flags);
1599 mvi_dev->dev_status = MVS_DEV_EH;
1600 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1601 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1603 int_to_scsilun(cmnd->device->lun, &lun);
1604 rc = mvs_find_tag(mvi, task, &tag);
1606 mv_printk("No such tag in %s\n", __func__);
1607 rc = TMF_RESP_FUNC_FAILED;
1611 tmf_task.tmf = TMF_ABORT_TASK;
1612 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1614 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1616 /* if successful, clear the task and callback forwards.*/
1617 if (rc == TMF_RESP_FUNC_COMPLETE) {
1619 struct mvs_slot_info *slot;
1621 if (task->lldd_task) {
1622 slot = task->lldd_task;
1623 slot_no = (u32) (slot - mvi->slot_info);
1624 spin_lock_irqsave(&mvi->lock, flags);
1625 mvs_slot_complete(mvi, slot_no, 1);
1626 spin_unlock_irqrestore(&mvi->lock, flags);
1630 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1631 task->task_proto & SAS_PROTOCOL_STP) {
1632 if (SATA_DEV == dev->dev_type) {
1633 struct mvs_slot_info *slot = task->lldd_task;
1634 u32 slot_idx = (u32)(slot - mvi->slot_info);
1635 mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1636 "slot=%p slot_idx=x%x\n",
1637 mvi, task, slot, slot_idx);
1638 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1639 mvs_slot_task_free(mvi, task, slot, slot_idx);
1640 rc = TMF_RESP_FUNC_COMPLETE;
1646 if (rc != TMF_RESP_FUNC_COMPLETE)
1647 mv_printk("%s:rc= %d\n", __func__, rc);
1651 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1653 int rc = TMF_RESP_FUNC_FAILED;
1654 struct mvs_tmf_task tmf_task;
1656 tmf_task.tmf = TMF_ABORT_TASK_SET;
1657 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1662 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1664 int rc = TMF_RESP_FUNC_FAILED;
1665 struct mvs_tmf_task tmf_task;
1667 tmf_task.tmf = TMF_CLEAR_ACA;
1668 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1673 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1675 int rc = TMF_RESP_FUNC_FAILED;
1676 struct mvs_tmf_task tmf_task;
1678 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1679 rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1684 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1685 u32 slot_idx, int err)
1687 struct mvs_device *mvi_dev = task->dev->lldd_dev;
1688 struct task_status_struct *tstat = &task->task_status;
1689 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1690 int stat = SAM_STAT_GOOD;
1693 resp->frame_len = sizeof(struct dev_to_host_fis);
1694 memcpy(&resp->ending_fis[0],
1695 SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1696 sizeof(struct dev_to_host_fis));
1697 tstat->buf_valid_size = sizeof(*resp);
1698 if (unlikely(err)) {
1699 if (unlikely(err & CMD_ISS_STPD))
1700 stat = SAS_OPEN_REJECT;
1702 stat = SAS_PROTO_RESPONSE;
1708 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1709 int key, int asc, int ascq)
1711 memset(buffer, 0, len);
1714 /* Descriptor format */
1716 mv_printk("Length %d of sense buffer too small to "
1717 "fit sense %x:%x:%x", len, key, asc, ascq);
1720 buffer[0] = 0x72; /* Response Code */
1722 buffer[1] = key; /* Sense Key */
1724 buffer[2] = asc; /* ASC */
1726 buffer[3] = ascq; /* ASCQ */
1729 mv_printk("Length %d of sense buffer too small to "
1730 "fit sense %x:%x:%x", len, key, asc, ascq);
1733 buffer[0] = 0x70; /* Response Code */
1735 buffer[2] = key; /* Sense Key */
1737 buffer[7] = 0x0a; /* Additional Sense Length */
1739 buffer[12] = asc; /* ASC */
1741 buffer[13] = ascq; /* ASCQ */
1747 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1748 u8 key, u8 asc, u8 asc_q)
1751 iu->response_data_len = 0;
1752 iu->sense_data_len = 17;
1754 mvs_set_sense(iu->sense_data, 17, 0,
1758 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1761 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1763 u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1764 u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1766 enum mvs_port_type type = PORT_TYPE_SAS;
1768 if (err_dw0 & CMD_ISS_STPD)
1769 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1771 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1773 stat = SAM_STAT_CHECK_CONDITION;
1774 switch (task->task_proto) {
1775 case SAS_PROTOCOL_SSP:
1777 stat = SAS_ABORTED_TASK;
1778 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1779 struct ssp_response_iu *iu = slot->response +
1780 sizeof(struct mvs_err_info);
1781 mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1782 sas_ssp_task_response(mvi->dev, task, iu);
1783 stat = SAM_STAT_CHECK_CONDITION;
1785 if (err_dw1 & bit(31))
1786 mv_printk("reuse same slot, retry command.\n");
1789 case SAS_PROTOCOL_SMP:
1790 stat = SAM_STAT_CHECK_CONDITION;
1793 case SAS_PROTOCOL_SATA:
1794 case SAS_PROTOCOL_STP:
1795 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1797 task->ata_task.use_ncq = 0;
1798 stat = SAS_PROTO_RESPONSE;
1799 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1809 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1811 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1812 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1813 struct sas_task *task = slot->task;
1814 struct mvs_device *mvi_dev = NULL;
1815 struct task_status_struct *tstat;
1816 struct domain_device *dev;
1820 enum exec_status sts;
1822 if (unlikely(!task || !task->lldd_task || !task->dev))
1825 tstat = &task->task_status;
1827 mvi_dev = dev->lldd_dev;
1829 spin_lock(&task->task_state_lock);
1830 task->task_state_flags &=
1831 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1832 task->task_state_flags |= SAS_TASK_STATE_DONE;
1834 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1835 spin_unlock(&task->task_state_lock);
1837 memset(tstat, 0, sizeof(*tstat));
1838 tstat->resp = SAS_TASK_COMPLETE;
1840 if (unlikely(aborted)) {
1841 tstat->stat = SAS_ABORTED_TASK;
1842 if (mvi_dev && mvi_dev->running_req)
1843 mvi_dev->running_req--;
1844 if (sas_protocol_ata(task->task_proto))
1845 mvs_free_reg_set(mvi, mvi_dev);
1847 mvs_slot_task_free(mvi, task, slot, slot_idx);
1851 /* when no device attaching, go ahead and complete by error handling*/
1852 if (unlikely(!mvi_dev || flags)) {
1854 mv_dprintk("port has not device.\n");
1855 tstat->stat = SAS_PHY_DOWN;
1859 /* error info record present */
1860 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1861 mv_dprintk("port %d slot %d rx_desc %X has error info"
1862 "%016llX.\n", slot->port->sas_port.id, slot_idx,
1863 rx_desc, (u64)(*(u64 *)slot->response));
1864 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1865 tstat->resp = SAS_TASK_COMPLETE;
1869 switch (task->task_proto) {
1870 case SAS_PROTOCOL_SSP:
1871 /* hw says status == 0, datapres == 0 */
1872 if (rx_desc & RXQ_GOOD) {
1873 tstat->stat = SAM_STAT_GOOD;
1874 tstat->resp = SAS_TASK_COMPLETE;
1876 /* response frame present */
1877 else if (rx_desc & RXQ_RSP) {
1878 struct ssp_response_iu *iu = slot->response +
1879 sizeof(struct mvs_err_info);
1880 sas_ssp_task_response(mvi->dev, task, iu);
1882 tstat->stat = SAM_STAT_CHECK_CONDITION;
1885 case SAS_PROTOCOL_SMP: {
1886 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1887 tstat->stat = SAM_STAT_GOOD;
1888 to = kmap_atomic(sg_page(sg_resp));
1889 memcpy(to + sg_resp->offset,
1890 slot->response + sizeof(struct mvs_err_info),
1891 sg_dma_len(sg_resp));
1896 case SAS_PROTOCOL_SATA:
1897 case SAS_PROTOCOL_STP:
1898 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1899 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1904 tstat->stat = SAM_STAT_CHECK_CONDITION;
1907 if (!slot->port->port_attached) {
1908 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1909 tstat->stat = SAS_PHY_DOWN;
1914 if (mvi_dev && mvi_dev->running_req) {
1915 mvi_dev->running_req--;
1916 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1917 mvs_free_reg_set(mvi, mvi_dev);
1919 mvs_slot_task_free(mvi, task, slot, slot_idx);
1922 spin_unlock(&mvi->lock);
1923 if (task->task_done)
1924 task->task_done(task);
1926 spin_lock(&mvi->lock);
1931 void mvs_do_release_task(struct mvs_info *mvi,
1932 int phy_no, struct domain_device *dev)
1935 struct mvs_phy *phy;
1936 struct mvs_port *port;
1937 struct mvs_slot_info *slot, *slot2;
1939 phy = &mvi->phy[phy_no];
1943 /* clean cmpl queue in case request is already finished */
1944 mvs_int_rx(mvi, false);
1948 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1949 struct sas_task *task;
1950 slot_idx = (u32) (slot - mvi->slot_info);
1953 if (dev && task->dev != dev)
1956 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1957 slot_idx, slot->slot_tag, task);
1958 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1960 mvs_slot_complete(mvi, slot_idx, 1);
1964 void mvs_release_task(struct mvs_info *mvi,
1965 struct domain_device *dev)
1967 int i, phyno[WIDE_PORT_MAX_PHY], num;
1968 num = mvs_find_dev_phyno(dev, phyno);
1969 for (i = 0; i < num; i++)
1970 mvs_do_release_task(mvi, phyno[i], dev);
1973 static void mvs_phy_disconnected(struct mvs_phy *phy)
1975 phy->phy_attached = 0;
1976 phy->att_dev_info = 0;
1977 phy->att_dev_sas_addr = 0;
1980 static void mvs_work_queue(struct work_struct *work)
1982 struct delayed_work *dw = container_of(work, struct delayed_work, work);
1983 struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1984 struct mvs_info *mvi = mwq->mvi;
1985 unsigned long flags;
1986 u32 phy_no = (unsigned long) mwq->data;
1987 struct sas_ha_struct *sas_ha = mvi->sas;
1988 struct mvs_phy *phy = &mvi->phy[phy_no];
1989 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1991 spin_lock_irqsave(&mvi->lock, flags);
1992 if (mwq->handler & PHY_PLUG_EVENT) {
1994 if (phy->phy_event & PHY_PLUG_OUT) {
1996 struct sas_identify_frame *id;
1997 id = (struct sas_identify_frame *)phy->frame_rcvd;
1998 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1999 phy->phy_event &= ~PHY_PLUG_OUT;
2000 if (!(tmp & PHY_READY_MASK)) {
2001 sas_phy_disconnected(sas_phy);
2002 mvs_phy_disconnected(phy);
2003 sas_ha->notify_phy_event(sas_phy,
2004 PHYE_LOSS_OF_SIGNAL);
2005 mv_dprintk("phy%d Removed Device\n", phy_no);
2007 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2008 mvs_update_phyinfo(mvi, phy_no, 1);
2009 mvs_bytes_dmaed(mvi, phy_no);
2010 mvs_port_notify_formed(sas_phy, 0);
2011 mv_dprintk("phy%d Attached Device\n", phy_no);
2014 } else if (mwq->handler & EXP_BRCT_CHG) {
2015 phy->phy_event &= ~EXP_BRCT_CHG;
2016 sas_ha->notify_port_event(sas_phy,
2017 PORTE_BROADCAST_RCVD);
2018 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
2020 list_del(&mwq->entry);
2021 spin_unlock_irqrestore(&mvi->lock, flags);
2025 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2030 mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2034 mwq->handler = handler;
2035 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2036 list_add_tail(&mwq->entry, &mvi->wq_list);
2037 schedule_delayed_work(&mwq->work_q, HZ * 2);
2044 static void mvs_sig_time_out(unsigned long tphy)
2046 struct mvs_phy *phy = (struct mvs_phy *)tphy;
2047 struct mvs_info *mvi = phy->mvi;
2050 for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2051 if (&mvi->phy[phy_no] == phy) {
2052 mv_dprintk("Get signature time out, reset phy %d\n",
2053 phy_no+mvi->id*mvi->chip->n_phy);
2054 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
2059 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2062 struct mvs_phy *phy = &mvi->phy[phy_no];
2064 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2065 MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2066 mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2067 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2068 mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
2072 * events is port event now ,
2073 * we need check the interrupt status which belongs to per port.
2076 if (phy->irq_status & PHYEV_DCDR_ERR) {
2077 mv_dprintk("phy %d STP decoding error.\n",
2078 phy_no + mvi->id*mvi->chip->n_phy);
2081 if (phy->irq_status & PHYEV_POOF) {
2083 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2084 int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2086 mvs_do_release_task(mvi, phy_no, NULL);
2087 phy->phy_event |= PHY_PLUG_OUT;
2088 MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2089 mvs_handle_event(mvi,
2090 (void *)(unsigned long)phy_no,
2092 ready = mvs_is_phy_ready(mvi, phy_no);
2093 if (ready || dev_sata) {
2094 if (MVS_CHIP_DISP->stp_reset)
2095 MVS_CHIP_DISP->stp_reset(mvi,
2098 MVS_CHIP_DISP->phy_reset(mvi,
2099 phy_no, MVS_SOFT_RESET);
2105 if (phy->irq_status & PHYEV_COMWAKE) {
2106 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2107 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2108 tmp | PHYEV_SIG_FIS);
2109 if (phy->timer.function == NULL) {
2110 phy->timer.data = (unsigned long)phy;
2111 phy->timer.function = mvs_sig_time_out;
2112 phy->timer.expires = jiffies + 5*HZ;
2113 add_timer(&phy->timer);
2116 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2117 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2118 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2119 if (phy->phy_status) {
2121 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2122 if (phy->phy_type & PORT_TYPE_SATA) {
2123 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2125 tmp &= ~PHYEV_SIG_FIS;
2126 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2129 mvs_update_phyinfo(mvi, phy_no, 0);
2130 if (phy->phy_type & PORT_TYPE_SAS) {
2131 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2135 mvs_bytes_dmaed(mvi, phy_no);
2136 /* whether driver is going to handle hot plug */
2137 if (phy->phy_event & PHY_PLUG_OUT) {
2138 mvs_port_notify_formed(&phy->sas_phy, 0);
2139 phy->phy_event &= ~PHY_PLUG_OUT;
2142 mv_dprintk("plugin interrupt but phy%d is gone\n",
2143 phy_no + mvi->id*mvi->chip->n_phy);
2145 } else if (phy->irq_status & PHYEV_BROAD_CH) {
2146 mv_dprintk("phy %d broadcast change.\n",
2147 phy_no + mvi->id*mvi->chip->n_phy);
2148 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2153 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2155 u32 rx_prod_idx, rx_desc;
2158 /* the first dword in the RX ring is special: it contains
2159 * a mirror of the hardware's RX producer index, so that
2160 * we don't have to stall the CPU reading that register.
2161 * The actual RX ring is offset by one dword, due to this.
2163 rx_prod_idx = mvi->rx_cons;
2164 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2165 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
2168 /* The CMPL_Q may come late, read from register and try again
2169 * note: if coalescing is enabled,
2170 * it will need to read from register every time for sure
2172 if (unlikely(mvi->rx_cons == rx_prod_idx))
2173 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2175 if (mvi->rx_cons == rx_prod_idx)
2178 while (mvi->rx_cons != rx_prod_idx) {
2179 /* increment our internal RX consumer pointer */
2180 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2181 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2183 if (likely(rx_desc & RXQ_DONE))
2184 mvs_slot_complete(mvi, rx_desc, 0);
2185 if (rx_desc & RXQ_ATTN) {
2187 } else if (rx_desc & RXQ_ERR) {
2188 if (!(rx_desc & RXQ_DONE))
2189 mvs_slot_complete(mvi, rx_desc, 0);
2190 } else if (rx_desc & RXQ_SLOT_RESET) {
2191 mvs_slot_free(mvi, rx_desc);
2195 if (attn && self_clear)
2196 MVS_CHIP_DISP->int_full(mvi);