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[SCSI] mvsas: check hd whether unplugged
if unplugged, driver's queuecommand function will return SAS_PHY_DOWN. task->lldd_task is used for saving its slot info. Signed-off-by: Ke Wei <kewei@marvell.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Ke Wei
James Bottomley
parent
1fce5e5da0
commit
4e52fc0a0a
@ -1784,15 +1784,19 @@ static u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port)
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return MVS_ID_NOT_MAPPED;
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}
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static u32 mvs_get_ncq_tag(struct sas_task *task)
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static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
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{
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u32 tag = 0;
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struct ata_queued_cmd *qc = task->uldd_task;
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if (qc)
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tag = qc->tag;
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if (qc) {
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if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
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qc->tf.command == ATA_CMD_FPDMA_READ) {
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*tag = qc->tag;
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return 1;
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}
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}
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return tag;
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return 0;
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}
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static int mvs_task_prep_ata(struct mvs_info *mvi,
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@ -1836,11 +1840,9 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
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hdr->flags = cpu_to_le32(flags);
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/* FIXME: the low order order 5 bits for the TAG if enable NCQ */
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if (task->ata_task.use_ncq) {
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hdr->tags = cpu_to_le32(mvs_get_ncq_tag(task));
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/*Fill in task file */
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task->ata_task.fis.sector_count = hdr->tags << 3;
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} else
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if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr->tags))
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task->ata_task.fis.sector_count |= hdr->tags << 3;
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else
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hdr->tags = cpu_to_le32(tag);
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hdr->data_len = cpu_to_le32(task->total_xfer_len);
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@ -1933,13 +1935,16 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
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u32 flags;
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u32 resp_len, req_len, i, tag = tei->tag;
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const u32 max_resp_len = SB_RFB_MAX;
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u8 phy_mask;
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slot = &mvi->slot_info[tag];
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phy_mask = (port->wide_port_phymap) ? port->wide_port_phymap :
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task->dev->port->phy_mask;
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slot->tx = mvi->tx_prod;
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mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
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(TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
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(port->wide_port_phymap << TXQ_PHY_SHIFT));
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(phy_mask << TXQ_PHY_SHIFT));
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flags = MCH_RETRY;
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if (task->ssp_task.enable_first_burst) {
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@ -2040,22 +2045,32 @@ static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
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void __iomem *regs = mvi->regs;
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struct mvs_task_exec_info tei;
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struct sas_task *t = task;
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struct mvs_slot_info *slot;
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u32 tag = 0xdeadbeef, rc, n_elem = 0;
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unsigned long flags;
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u32 n = num, pass = 0;
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spin_lock_irqsave(&mvi->lock, flags);
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do {
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dev = t->dev;
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tei.port = &mvi->port[dev->port->id];
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if (!tei.port->port_attached) {
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struct task_status_struct *ts = &t->task_status;
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ts->stat = SAS_PHY_DOWN;
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t->task_done(t);
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rc = 0;
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goto exec_exit;
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if (sas_protocol_ata(t->task_proto)) {
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rc = SAS_PHY_DOWN;
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goto out_done;
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} else {
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struct task_status_struct *ts = &t->task_status;
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ts->resp = SAS_TASK_UNDELIVERED;
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ts->stat = SAS_PHY_DOWN;
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t->task_done(t);
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if (n > 1)
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t = list_entry(t->list.next,
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struct sas_task, list);
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continue;
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}
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}
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if (!sas_protocol_ata(t->task_proto)) {
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if (t->num_scatter) {
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n_elem = pci_map_sg(mvi->pdev, t->scatter,
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@ -2074,9 +2089,10 @@ static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
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if (rc)
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goto err_out;
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mvi->slot_info[tag].task = t;
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mvi->slot_info[tag].n_elem = n_elem;
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memset(mvi->slot_info[tag].buf, 0, MVS_SLOT_BUF_SZ);
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slot = &mvi->slot_info[tag];
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t->lldd_task = NULL;
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slot->n_elem = n_elem;
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memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
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tei.task = t;
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tei.hdr = &mvi->slot[tag];
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tei.tag = tag;
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@ -2105,28 +2121,26 @@ static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
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if (rc)
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goto err_out_tag;
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slot->task = t;
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slot->port = tei.port;
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t->lldd_task = (void *) slot;
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list_add_tail(&slot->list, &slot->port->list);
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/* TODO: select normal or high priority */
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spin_lock(&t->task_state_lock);
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t->task_state_flags |= SAS_TASK_AT_INITIATOR;
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spin_unlock(&t->task_state_lock);
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if (n == 1) {
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spin_unlock_irqrestore(&mvi->lock, flags);
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mw32(TX_PROD_IDX, mvi->tx_prod);
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}
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mvs_hba_memory_dump(mvi, tag, t->task_proto);
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++pass;
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mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
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if (n == 1)
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break;
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t = list_entry(t->list.next, struct sas_task, list);
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if (n > 1)
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t = list_entry(t->list.next, struct sas_task, list);
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} while (--n);
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return 0;
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rc = 0;
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goto out_done;
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err_out_tag:
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mvs_tag_free(mvi, tag);
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@ -2136,7 +2150,7 @@ err_out:
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if (n_elem)
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pci_unmap_sg(mvi->pdev, t->scatter, n_elem,
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t->data_dir);
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exec_exit:
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out_done:
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if (pass)
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mw32(TX_PROD_IDX, (mvi->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
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spin_unlock_irqrestore(&mvi->lock, flags);
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