From: Dan Williams <dan.j.williams@intel.com>
To: linux-scsi@vger.kernel.org
Cc: linux-ide@vger.kernel.org
Subject: [PATCH v3 12/14] isci: ->lldd_ata_check_ready handler
Date: Thu, 05 Jan 2012 17:00:02 -0800 [thread overview]
Message-ID: <20120106010001.11464.91347.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20120106005634.11464.64030.stgit@localhost6.localdomain6>
Report to libata whether the link to the given domain_device is up and the
signature fis has been received.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/isci/init.c | 3 +++
drivers/scsi/isci/port.c | 28 ++++++++++++++++++++++++++++
drivers/scsi/isci/port.h | 1 +
3 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 59f2ae7..40293b3 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -185,6 +185,9 @@ static struct sas_domain_function_template isci_transport_ops = {
.lldd_lu_reset = isci_task_lu_reset,
.lldd_query_task = isci_task_query_task,
+ /* ata recovery called from ata-eh */
+ .lldd_ata_check_ready = isci_ata_check_ready,
+
/* Port and Adapter management */
.lldd_clear_nexus_port = isci_task_clear_nexus_port,
.lldd_clear_nexus_ha = isci_task_clear_nexus_ha,
diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
index 7e4a9ee..e795645 100644
--- a/drivers/scsi/isci/port.c
+++ b/drivers/scsi/isci/port.c
@@ -1663,6 +1663,34 @@ int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *ipor
return ret;
}
+int isci_ata_check_ready(struct domain_device *dev)
+{
+ struct isci_port *iport = dev->port->lldd_port;
+ struct isci_host *ihost = dev_to_ihost(dev);
+ struct isci_remote_device *idev;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&ihost->scic_lock, flags);
+ idev = isci_lookup_device(dev);
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+ if (!idev)
+ goto out;
+
+ if (test_bit(IPORT_RESET_PENDING, &iport->state))
+ goto out;
+
+ /* snapshot active phy mask */
+ spin_lock_irqsave(&ihost->scic_lock, flags);
+ rc = !!iport->active_phy_mask;
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
+ out:
+ isci_put_device(idev);
+
+ return rc;
+}
+
void isci_port_deformed(struct asd_sas_phy *phy)
{
struct isci_host *ihost = phy->ha->lldd_ha;
diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h
index 78e1e82..b4a733c 100644
--- a/drivers/scsi/isci/port.h
+++ b/drivers/scsi/isci/port.h
@@ -293,4 +293,5 @@ void isci_port_init(
int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
struct isci_phy *iphy);
+int isci_ata_check_ready(struct domain_device *dev);
#endif /* !defined(_ISCI_PORT_H_) */
next prev parent reply other threads:[~2012-01-06 1:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-06 0:59 [GIT PATCH v3 00/14] libsas: eh reworks (ata-eh vs discovery, races, ...) Dan Williams
2012-01-06 0:59 ` [PATCH v3 01/14] libsas: introduce sas_drain_work() Dan Williams
2012-01-06 0:59 ` [PATCH v3 02/14] libsas: remove ata_port.lock management duties from lldds Dan Williams
2012-01-06 0:59 ` [PATCH v3 03/14] libsas: prevent domain rediscovery competing with ata error handling Dan Williams
2012-01-09 19:14 ` Dan Williams
2012-01-09 20:03 ` Dan Williams
2012-01-06 0:59 ` [PATCH v3 04/14] libsas: fix timeout vs completion race Dan Williams
2012-01-06 0:59 ` [PATCH v3 05/14] libsas: perform sas-transport resets in shost->workq context Dan Williams
2012-01-06 0:59 ` [PATCH v3 06/14] libsas: sas_phy_enable via transport_sas_phy_reset Dan Williams
2012-01-06 0:59 ` [PATCH v3 07/14] libsas: async ata-eh Dan Williams
2012-01-06 0:59 ` [PATCH v3 08/14] isci: kill iphy->isci_port lookups Dan Williams
2012-01-23 23:45 ` Dan Williams
2012-01-06 0:59 ` [PATCH v3 09/14] isci: kill isci_port->status Dan Williams
2012-01-06 0:59 ` [PATCH v3 10/14] isci: fix interpretation of "hard" reset Dan Williams
2012-01-06 0:59 ` [PATCH v3 11/14] isci: stop interpreting ->lldd_lu_reset() as an ata soft-reset Dan Williams
2012-01-06 1:00 ` Dan Williams [this message]
2012-01-09 1:57 ` [PATCH v3 12/14] isci: ->lldd_ata_check_ready handler Jack Wang
2012-01-09 19:26 ` Dan Williams
2012-01-06 1:00 ` [PATCH v3 13/14] isci: remove bus and reset handlers Dan Williams
2012-01-06 1:00 ` [PATCH v3 14/14] isci: remove IDEV_EH hack to disable "discovery-time" ata resets Dan Williams
2012-01-06 1:46 ` [GIT PATCH v3 00/14] libsas: eh reworks (ata-eh vs discovery, races, ...) Dan Williams
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