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@xxxxxxxxxxx>
---
drivers/scsi/mvsas.c | 76 +++++++++++++++++++++++++++++--------------------
1 files changed, 45 insertions(+), 31 deletions(-)
diff --git a/drivers/scsi/mvsas.c b/drivers/scsi/mvsas.c
index f302970..ebfe164 100644
--- a/drivers/scsi/mvsas.c
+++ b/drivers/scsi/mvsas.c
@@ -1784,15 +1784,19 @@ static u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port)
return MVS_ID_NOT_MAPPED;
}
-static u32 mvs_get_ncq_tag(struct sas_task *task)
+static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
{
- u32 tag = 0;
struct ata_queued_cmd *qc = task->uldd_task;
- if (qc)
- tag = qc->tag;
+ if (qc) {
+ if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
+ qc->tf.command == ATA_CMD_FPDMA_READ) {
+ *tag = qc->tag;
+ return 1;
+ }
+ }
- return tag;
+ return 0;
}
static int mvs_task_prep_ata(struct mvs_info *mvi,
@@ -1836,11 +1840,9 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
hdr->flags = cpu_to_le32(flags);
/* FIXME: the low order order 5 bits for the TAG if enable NCQ */
- if (task->ata_task.use_ncq) {
- hdr->tags = cpu_to_le32(mvs_get_ncq_tag(task));
- /*Fill in task file */
- task->ata_task.fis.sector_count = hdr->tags << 3;
- } else
+ if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr->tags))
+ task->ata_task.fis.sector_count |= hdr->tags << 3;
+ else
hdr->tags = cpu_to_le32(tag);
hdr->data_len = cpu_to_le32(task->total_xfer_len);
@@ -1933,13 +1935,16 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
u32 flags;
u32 resp_len, req_len, i, tag = tei->tag;
const u32 max_resp_len = SB_RFB_MAX;
+ u8 phy_mask;
slot = &mvi->slot_info[tag];
+ phy_mask = (port->wide_port_phymap) ? port->wide_port_phymap :
+ task->dev->port->phy_mask;
slot->tx = mvi->tx_prod;
mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
(TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
- (port->wide_port_phymap << TXQ_PHY_SHIFT));
+ (phy_mask << TXQ_PHY_SHIFT));
flags = MCH_RETRY;
if (task->ssp_task.enable_first_burst) {
@@ -2040,22 +2045,32 @@ static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
void __iomem *regs = mvi->regs;
struct mvs_task_exec_info tei;
struct sas_task *t = task;
+ struct mvs_slot_info *slot;
u32 tag = 0xdeadbeef, rc, n_elem = 0;
unsigned long flags;
u32 n = num, pass = 0;
spin_lock_irqsave(&mvi->lock, flags);
-
do {
+ dev = t->dev;
tei.port = &mvi->port[dev->port->id];
if (!tei.port->port_attached) {
- struct task_status_struct *ts = &t->task_status;
- ts->stat = SAS_PHY_DOWN;
- t->task_done(t);
- rc = 0;
- goto exec_exit;
+ if (sas_protocol_ata(t->task_proto)) {
+ rc = SAS_PHY_DOWN;
+ goto out_done;
+ } else {
+ struct task_status_struct *ts = &t->task_status;
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_PHY_DOWN;
+ t->task_done(t);
+ if (n > 1)
+ t = list_entry(t->list.next,
+ struct sas_task, list);
+ continue;
+ }
}
+
if (!sas_protocol_ata(t->task_proto)) {
if (t->num_scatter) {
n_elem = pci_map_sg(mvi->pdev, t->scatter,
@@ -2074,9 +2089,10 @@ static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
if (rc)
goto err_out;
- mvi->slot_info[tag].task = t;
- mvi->slot_info[tag].n_elem = n_elem;
- memset(mvi->slot_info[tag].buf, 0, MVS_SLOT_BUF_SZ);
+ slot = &mvi->slot_info[tag];
+ t->lldd_task = NULL;
+ slot->n_elem = n_elem;
+ memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
tei.task = t;
tei.hdr = &mvi->slot[tag];
tei.tag = tag;
@@ -2105,28 +2121,26 @@ static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
if (rc)
goto err_out_tag;
+ slot->task = t;
+ slot->port = tei.port;
+ t->lldd_task = (void *) slot;
+ list_add_tail(&slot->list, &slot->port->list);
/* TODO: select normal or high priority */
spin_lock(&t->task_state_lock);
t->task_state_flags |= SAS_TASK_AT_INITIATOR;
spin_unlock(&t->task_state_lock);
- if (n == 1) {
- spin_unlock_irqrestore(&mvi->lock, flags);
- mw32(TX_PROD_IDX, mvi->tx_prod);
- }
mvs_hba_memory_dump(mvi, tag, t->task_proto);
++pass;
mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
-
- if (n == 1)
- break;
-
- t = list_entry(t->list.next, struct sas_task, list);
+ if (n > 1)
+ t = list_entry(t->list.next, struct sas_task, list);
} while (--n);
- return 0;
+ rc = 0;
+ goto out_done;
err_out_tag:
mvs_tag_free(mvi, tag);
@@ -2136,7 +2150,7 @@ err_out:
if (n_elem)
pci_unmap_sg(mvi->pdev, t->scatter, n_elem,
t->data_dir);
-exec_exit:
+out_done:
if (pass)
mw32(TX_PROD_IDX, (mvi->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
spin_unlock_irqrestore(&mvi->lock, flags);
--
1.5.4
--
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