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isci: Terminate dev requests on FIS err bit rx in NCQ

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When the remote device transitions to a not-ready state because of
an NCQ error condition, all outstanding requests to that device
are terminated and completed to libsas on the normal path.  The
device then waits for a READ LOG EXT command to issue on the task
management path.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jeff Skirvin
2011-06-23 17:09:02 -07:00
committed by Dan Williams
parent 4cffe13e0d
commit 9274f45ea5
5 changed files with 73 additions and 7 deletions
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27
drivers/scsi/isci/remote_device.c
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@@ -68,17 +68,39 @@
* @isci_host: This parameter specifies the isci host object.
* @isci_device: This parameter specifies the remote device
*
* scic_lock is held on entrance to this function.
*/
static void isci_remote_device_not_ready(struct isci_host *ihost,
struct isci_remote_device *idev, u32 reason)
{
struct isci_request * ireq;
dev_dbg(&ihost->pdev->dev,
"%s: isci_device = %p\n", __func__, idev);
if (reason == SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED)
switch (reason) {
case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED:
set_bit(IDEV_GONE, &idev->flags);
else
break;
case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED:
set_bit(IDEV_IO_NCQERROR, &idev->flags);
/* Kill all outstanding requests for the device. */
list_for_each_entry(ireq, &idev->reqs_in_process, dev_node) {
dev_dbg(&ihost->pdev->dev,
"%s: isci_device = %p request = %p\n",
__func__, idev, ireq);
scic_controller_terminate_request(&ihost->sci,
&idev->sci,
&ireq->sci);
}
/* Fall through into the default case... */
default:
clear_bit(IDEV_IO_READY, &idev->flags);
break;
}
}
/**
@@ -94,6 +116,7 @@ static void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote
dev_dbg(&ihost->pdev->dev,
"%s: idev = %p\n", __func__, idev);
clear_bit(IDEV_IO_NCQERROR, &idev->flags);
set_bit(IDEV_IO_READY, &idev->flags);
if (test_and_clear_bit(IDEV_START_PENDING, &idev->flags))
wake_up(&ihost->eventq);