From: Dan Williams <dan.j.williams@intel.com>
To: linux-scsi@vger.kernel.org
Cc: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Subject: [isci-rnc PATCH v1 07/37] isci: Remote device stop also suspends the RNC and terminates I/O.
Date: Thu, 22 Mar 2012 17:28:29 -0700 [thread overview]
Message-ID: <20120323002829.18065.63243.stgit@dwillia2-linux.jf.intel.com> (raw)
In-Reply-To: <20120323002504.18065.45709.stgit@dwillia2-linux.jf.intel.com>
From: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Fixing the remote device state machine to suspend and terminate
all outstanding I/O before the device stopped state is reached.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/isci/remote_device.c | 23 +++++++++++------------
1 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index f40d429..3048e02 100644
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -263,13 +263,15 @@ enum sci_status sci_remote_device_stop(struct isci_remote_device *idev,
case SCI_SMP_DEV_IDLE:
case SCI_SMP_DEV_CMD:
sci_change_state(sm, SCI_DEV_STOPPING);
- if (idev->started_request_count == 0) {
+ if (idev->started_request_count == 0)
sci_remote_node_context_destruct(&idev->rnc,
- rnc_destruct_done, idev);
- return SCI_SUCCESS;
- } else
- return sci_remote_device_terminate_requests(idev);
- break;
+ rnc_destruct_done,
+ idev);
+ else {
+ sci_remote_device_suspend(idev);
+ sci_remote_device_terminate_requests(idev);
+ }
+ return SCI_SUCCESS;
case SCI_DEV_STOPPING:
/* All requests should have been terminated, but if there is an
* attempt to stop a device already in the stopping state, then
@@ -1403,14 +1405,8 @@ enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_rem
spin_lock_irqsave(&ihost->scic_lock, flags);
idev->domain_dev->lldd_dev = NULL; /* disable new lookups */
set_bit(IDEV_GONE, &idev->flags);
- spin_unlock_irqrestore(&ihost->scic_lock, flags);
-
- /* Kill all outstanding requests. */
- isci_remote_device_nuke_requests(ihost, idev);
set_bit(IDEV_STOP_PENDING, &idev->flags);
-
- spin_lock_irqsave(&ihost->scic_lock, flags);
status = sci_remote_device_stop(idev, 50);
spin_unlock_irqrestore(&ihost->scic_lock, flags);
@@ -1420,6 +1416,9 @@ enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_rem
else
wait_for_device_stop(ihost, idev);
+ dev_dbg(&ihost->pdev->dev,
+ "%s: isci_device = %p, waiting done.\n", __func__, idev);
+
return status;
}
next prev parent reply other threads:[~2012-03-23 0:13 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-23 0:27 [isci-rnc PATCH v1 00/37] remote node context rework Dan Williams
2012-03-23 0:27 ` [isci-rnc PATCH v1 01/37] isci: Manage the link layer hang detect timer for RNC suspensions Dan Williams
2012-03-23 0:27 ` [isci-rnc PATCH v1 02/37] isci: Fixed bug in resumption from RNC Tx/Rx suspend state Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 03/37] isci: Handle all suspending TC completions Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 04/37] isci: Terminate outstanding TCs on TX/RX RNC suspensions Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 05/37] isci: Manage device suspensions during TC terminations Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 06/37] isci: Remote device must be suspended for NCQ cleanup Dan Williams
2012-03-23 0:28 ` Dan Williams [this message]
2012-03-23 0:28 ` [isci-rnc PATCH v1 08/37] isci: Escalate to I_T_Nexus_Reset when the device is gone Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 09/37] isci: Redesign device suspension, abort, cleanup Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 10/37] isci: Add suspension cases for RNC INVALIDATING, POSTING states Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 11/37] isci: Device access in the error path does not depend on IDEV_GONE Dan Williams
2012-03-23 0:28 ` [isci-rnc PATCH v1 12/37] isci: All pending TCs are terminated when the RNC is invalidated Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 13/37] isci: Only set IDEV_GONE in the device stop path Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 14/37] isci: Remove isci_device reqs_in_process and dev_node from isci_device Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 15/37] isci: Distinguish between remote device suspension cases Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 16/37] isci: Fix the terminated I/O to not call sas_task_abort() Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 17/37] isci: Save the suspension hint for upcoming suspensions Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 18/37] isci: Manage the LLHANG timer enable/disable per-device Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 19/37] isci: Make sure all TCs are terminated and cleaned in LUN reset Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 20/37] isci: Implement waiting for suspend in the abort path Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 21/37] isci: When in the abort path, defeat other resume calls until done Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 22/37] isci: Callbacks to libsas occur under scic_lock and are synchronized Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 23/37] isci: Manage tag releases differently when aborting tasks Dan Williams
2012-03-23 0:29 ` [isci-rnc PATCH v1 24/37] isci: Fix RNC suspend call for SCI_RESUMING state Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 25/37] isci: Wait for RNC resumption before leaving the abort path Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 26/37] isci: Directly control IREQ_ABORT_PATH_ACTIVE when completing TMFs Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 27/37] isci: Add protocol indicator for TMF requests Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 28/37] isci: Added timeouts to RNC suspensions in the abort path Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 29/37] isci: Change the phy control and link reset interface for HW reasons Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 30/37] isci: Don't wait for an RNC suspend if it's being destroyed Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 31/37] isci: Restore the ATAPI device RNC management code Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 32/37] isci: Check IDEV_GONE before performing abort path operations Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 33/37] isci: Remove obviated host callback list Dan Williams
2012-03-23 0:30 ` [isci-rnc PATCH v1 34/37] isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock Dan Williams
2012-03-23 0:31 ` [isci-rnc PATCH v1 35/37] isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition Dan Williams
2012-03-23 0:31 ` [isci-rnc PATCH v1 36/37] isci: Fixed RNC bug that lost the suspension or resumption during destroy Dan Williams
2012-03-23 0:31 ` [isci-rnc PATCH v1 37/37] isci: End the RNC resumption wait when the RNC is destroyed Dan Williams
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