aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/pm8001/pm8001_sas.c
diff options
context:
space:
mode:
authorSakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>2013-03-19 18:08:40 +0530
committerJames Bottomley <JBottomley@Parallels.com>2013-05-10 07:47:51 -0700
commita6cb3d012b983b350ae3892cff2e692665df0e1e (patch)
treee22bce8642adf4f4b5caf08ab0995a131db2e39e /drivers/scsi/pm8001/pm8001_sas.c
parentc6b9ef5779c3e1edfa9de949d2a51252bc347663 (diff)
download96b-common-a6cb3d012b983b350ae3892cff2e692665df0e1e.tar.gz
[SCSI] pm80xx: thermal, sas controller config and error handling update
Modified thermal configuration to happen after interrupt registration Added SAS controller configuration during initialization Added error handling logic to handle I_T_Nexus errors and variants [jejb: fix up tabs and spaces issues] Signed-off-by: Anand Kumar S <AnandKumar.Santhanam@pmcs.com> Acked-by: Jack Wang <jack_wang@usish.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/pm8001/pm8001_sas.c')
-rw-r--r--drivers/scsi/pm8001/pm8001_sas.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index c720917d1388..9af95853f840 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -1018,6 +1018,72 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev)
return rc;
}
+/*
+* This function handle the IT_NEXUS_XXX event or completion
+* status code for SSP/SATA/SMP I/O request.
+*/
+int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
+{
+ int rc = TMF_RESP_FUNC_FAILED;
+ struct pm8001_device *pm8001_dev;
+ struct pm8001_hba_info *pm8001_ha;
+ struct sas_phy *phy;
+ u32 device_id = 0;
+
+ if (!dev || !dev->lldd_dev)
+ return -1;
+
+ pm8001_dev = dev->lldd_dev;
+ device_id = pm8001_dev->device_id;
+ pm8001_ha = pm8001_find_ha_by_dev(dev);
+
+ PM8001_EH_DBG(pm8001_ha,
+ pm8001_printk("I_T_Nexus handler invoked !!"));
+
+ phy = sas_get_local_phy(dev);
+
+ if (dev_is_sata(dev)) {
+ DECLARE_COMPLETION_ONSTACK(completion_setstate);
+ if (scsi_is_sas_phy_local(phy)) {
+ rc = 0;
+ goto out;
+ }
+ /* send internal ssp/sata/smp abort command to FW */
+ rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
+ dev, 1, 0);
+ msleep(100);
+
+ /* deregister the target device */
+ pm8001_dev_gone_notify(dev);
+ msleep(200);
+
+ /*send phy reset to hard reset target */
+ rc = sas_phy_reset(phy, 1);
+ msleep(2000);
+ pm8001_dev->setds_completion = &completion_setstate;
+
+ wait_for_completion(&completion_setstate);
+ } else {
+ /* send internal ssp/sata/smp abort command to FW */
+ rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
+ dev, 1, 0);
+ msleep(100);
+
+ /* deregister the target device */
+ pm8001_dev_gone_notify(dev);
+ msleep(200);
+
+ /*send phy reset to hard reset target */
+ rc = sas_phy_reset(phy, 1);
+ msleep(2000);
+ }
+ PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
+ pm8001_dev->device_id, rc));
+out:
+ sas_put_local_phy(phy);
+
+ return rc;
+}
/* mandatory SAM-3, the task reset the specified LUN*/
int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
{