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mtip32xx: Fix to handle TFE for PIO(IOCTL/internal) commands

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If a PIO (IOCTL/internal) command resulted in TFE, signal the wait event or break out of polling.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Asai Thambi S P 2012-05-29 18:42:27 -07:00 committed by Jens Axboe
parent 971890f258
commit d02e1f0ad0
1 changed files with 33 additions and 33 deletions
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66
drivers/block/mtip32xx/mtip32xx.c
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@ -781,13 +781,24 @@ static void mtip_handle_tfe(struct driver_data *dd)
/* Stop the timer to prevent command timeouts. */
del_timer(&port->cmd_timer);
set_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags);
if (test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags) &&
test_bit(MTIP_TAG_INTERNAL, port->allocated)) {
cmd = &port->commands[MTIP_TAG_INTERNAL];
dbg_printk(MTIP_DRV_NAME " TFE for the internal command\n");
atomic_inc(&cmd->active); /* active > 1 indicates error */
if (cmd->comp_data && cmd->comp_func) {
cmd->comp_func(port, MTIP_TAG_INTERNAL,
cmd->comp_data, PORT_IRQ_TF_ERR);
}
goto handle_tfe_exit;
}
/* clear the tag accumulator */
memset(tagaccum, 0, SLOTBITS_IN_LONGS * sizeof(long));
/* Set eh_active */
set_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags);
/* Loop through all the groups */
for (group = 0; group < dd->slot_groups; group++) {
completed = readl(port->completed[group]);
@ -939,6 +950,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
}
print_tags(dd, "reissued (TFE)", tagaccum, cmd_cnt);
handle_tfe_exit:
/* clear eh_active */
clear_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags);
wake_up_interruptible(&port->svc_wait);
@ -1328,22 +1340,6 @@ static int mtip_exec_internal_command(struct mtip_port *port,
}
rv = -EAGAIN;
}
if (readl(port->cmd_issue[MTIP_TAG_INTERNAL])
& (1 << MTIP_TAG_INTERNAL)) {
dev_warn(&port->dd->pdev->dev,
"Retiring internal command but CI is 1.\n");
if (test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
&port->dd->dd_flag)) {
hba_reset_nosleep(port->dd);
rv = -ENXIO;
} else {
mtip_restart_port(port);
rv = -EAGAIN;
}
goto exec_ic_exit;
}
} else {
/* Spin for <timeout> checking if command still outstanding */
timeout = jiffies + msecs_to_jiffies(timeout);
@ -1360,23 +1356,27 @@ static int mtip_exec_internal_command(struct mtip_port *port,
rv = -ENXIO;
goto exec_ic_exit;
}
}
if (readl(port->cmd_issue[MTIP_TAG_INTERNAL])
& (1 << MTIP_TAG_INTERNAL)) {
dev_err(&port->dd->pdev->dev,
"Internal command did not complete [atomic]\n");
rv = -EAGAIN;
if (test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
&port->dd->dd_flag)) {
hba_reset_nosleep(port->dd);
rv = -ENXIO;
} else {
mtip_restart_port(port);
rv = -EAGAIN;
if (readl(port->mmio + PORT_IRQ_STAT) & PORT_IRQ_ERR) {
atomic_inc(&int_cmd->active); /* error */
break;
}
}
}
if (atomic_read(&int_cmd->active) > 1) {
dev_err(&port->dd->pdev->dev,
"Internal command [%02X] failed\n", fis->command);
rv = -EIO;
}
if (readl(port->cmd_issue[MTIP_TAG_INTERNAL])
& (1 << MTIP_TAG_INTERNAL)) {
rv = -ENXIO;
if (!test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
&port->dd->dd_flag)) {
mtip_restart_port(port);
rv = -EAGAIN;
}
}
exec_ic_exit:
/* Clear the allocated and active bits for the internal command. */
atomic_set(&int_cmd->active, 0);