From: Dan Williams <dan.j.williams@intel.com>
To: linux-scsi@vger.kernel.org
Cc: linux-ide@vger.kernel.org, Jack Wang <jack_wang@usish.com>
Subject: [PATCH v4 08/10] isci: ->lldd_ata_check_ready handler
Date: Mon, 16 Jan 2012 21:11:43 -0800 [thread overview]
Message-ID: <20120117051143.22344.21687.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20120117050847.22344.4961.stgit@localhost6.localdomain6>
Report to libata whether the link to the given domain_device is up and the
signature fis has been received.
Cc: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/isci/init.c | 3 +++
drivers/scsi/isci/port.c | 25 +++++++++++++++++++++++++
drivers/scsi/isci/port.h | 1 +
3 files changed, 29 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..eca9ba0 100644
--- a/drivers/scsi/isci/port.c
+++ b/drivers/scsi/isci/port.c
@@ -1663,6 +1663,31 @@ 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;
+
+ rc = !!iport->active_phy_mask;
+ 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:[~2012-01-17 5:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-17 5:11 [resend PATCH v4 00/10] libsas: eh reworks (ata-eh vs discovery, races, ...) Dan Williams
2012-01-17 5:11 ` [PATCH v4 01/10] libsas: convert dev->gone to flags Dan Williams
2012-01-17 5:11 ` [PATCH v4 02/10] libsas: prevent domain rediscovery competing with ata error handling Dan Williams
2012-01-17 5:11 ` [PATCH v4 03/10] libsas: fix timeout vs completion race Dan Williams
2012-01-17 5:11 ` [PATCH v4 04/10] libsas: don't mark expanders as gone when a child device is removed Dan Williams
2012-01-17 5:11 ` [PATCH v4 05/10] libsas: check for 'gone' expanders in smp_execute_task() Dan Williams
2012-01-17 5:11 ` [PATCH v4 06/10] libsas: fix sas_find_local_phy(), take phy references Dan Williams
2012-01-17 5:11 ` [PATCH v4 07/10] libsas: don't recover 'gone' devices in sas_ata_hard_reset() Dan Williams
2012-01-17 5:11 ` Dan Williams [this message]
2012-01-17 5:11 ` [PATCH v4 09/10] libsas: pre-clean commands that won the eh vs completion race Dan Williams
2012-01-17 5:11 ` [PATCH v4 10/10] libsas: feed the scsi_block_when_processing_errors() meter Dan Williams
2012-02-02 8:04 ` Dan Williams
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