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path: root/drivers/message/fusion/mptbase.c
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Diffstat (limited to 'drivers/message/fusion/mptbase.c')
-rw-r--r--drivers/message/fusion/mptbase.c92
1 files changed, 88 insertions, 4 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 7956a10f9488..e9c6a6047a00 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -63,6 +63,8 @@
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
+#include <linux/kthread.h>
+#include <scsi/scsi_host.h>
#include "mptbase.h"
#include "lsi/mpi_log_fc.h"
@@ -323,6 +325,32 @@ mpt_is_discovery_complete(MPT_ADAPTER *ioc)
return rc;
}
+
+/**
+ * mpt_remove_dead_ioc_func - kthread context to remove dead ioc
+ * @arg: input argument, used to derive ioc
+ *
+ * Return 0 if controller is removed from pci subsystem.
+ * Return -1 for other case.
+ */
+static int mpt_remove_dead_ioc_func(void *arg)
+{
+ MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
+ struct pci_dev *pdev;
+
+ if ((ioc == NULL))
+ return -1;
+
+ pdev = ioc->pcidev;
+ if ((pdev == NULL))
+ return -1;
+
+ pci_remove_bus_device(pdev);
+ return 0;
+}
+
+
+
/**
* mpt_fault_reset_work - work performed on workq after ioc fault
* @work: input argument, used to derive ioc
@@ -336,12 +364,45 @@ mpt_fault_reset_work(struct work_struct *work)
u32 ioc_raw_state;
int rc;
unsigned long flags;
+ MPT_SCSI_HOST *hd;
+ struct task_struct *p;
if (ioc->ioc_reset_in_progress || !ioc->active)
goto out;
+
ioc_raw_state = mpt_GetIocState(ioc, 0);
- if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_FAULT) {
+ if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_MASK) {
+ printk(MYIOC_s_INFO_FMT "%s: IOC is non-operational !!!!\n",
+ ioc->name, __func__);
+
+ /*
+ * Call mptscsih_flush_pending_cmds callback so that we
+ * flush all pending commands back to OS.
+ * This call is required to aovid deadlock at block layer.
+ * Dead IOC will fail to do diag reset,and this call is safe
+ * since dead ioc will never return any command back from HW.
+ */
+ hd = shost_priv(ioc->sh);
+ ioc->schedule_dead_ioc_flush_running_cmds(hd);
+
+ /*Remove the Dead Host */
+ p = kthread_run(mpt_remove_dead_ioc_func, ioc,
+ "mpt_dead_ioc_%d", ioc->id);
+ if (IS_ERR(p)) {
+ printk(MYIOC_s_ERR_FMT
+ "%s: Running mpt_dead_ioc thread failed !\n",
+ ioc->name, __func__);
+ } else {
+ printk(MYIOC_s_WARN_FMT
+ "%s: Running mpt_dead_ioc thread success !\n",
+ ioc->name, __func__);
+ }
+ return; /* don't rearm timer */
+ }
+
+ if ((ioc_raw_state & MPI_IOC_STATE_MASK)
+ == MPI_IOC_STATE_FAULT) {
printk(MYIOC_s_WARN_FMT "IOC is in FAULT state (%04xh)!!!\n",
ioc->name, ioc_raw_state & MPI_DOORBELL_DATA_MASK);
printk(MYIOC_s_WARN_FMT "Issuing HardReset from %s!!\n",
@@ -6413,8 +6474,19 @@ mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS *pCfg)
pReq->Action, ioc->mptbase_cmds.status, timeleft));
if (ioc->mptbase_cmds.status & MPT_MGMT_STATUS_DID_IOCRESET)
goto out;
- if (!timeleft)
+ if (!timeleft) {
+ spin_lock_irqsave(&ioc->taskmgmt_lock, flags);
+ if (ioc->ioc_reset_in_progress) {
+ spin_unlock_irqrestore(&ioc->taskmgmt_lock,
+ flags);
+ printk(MYIOC_s_INFO_FMT "%s: host reset in"
+ " progress mpt_config timed out.!!\n",
+ __func__, ioc->name);
+ return -EFAULT;
+ }
+ spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags);
issue_hard_reset = 1;
+ }
goto out;
}
@@ -7128,7 +7200,18 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
spin_lock_irqsave(&ioc->taskmgmt_lock, flags);
if (ioc->ioc_reset_in_progress) {
spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags);
- return 0;
+ ioc->wait_on_reset_completion = 1;
+ do {
+ ssleep(1);
+ } while (ioc->ioc_reset_in_progress == 1);
+ ioc->wait_on_reset_completion = 0;
+ return ioc->reset_status;
+ }
+ if (ioc->wait_on_reset_completion) {
+ spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags);
+ rc = 0;
+ time_count = jiffies;
+ goto exit;
}
ioc->ioc_reset_in_progress = 1;
if (ioc->alt_ioc)
@@ -7165,6 +7248,7 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
ioc->ioc_reset_in_progress = 0;
ioc->taskmgmt_quiesce_io = 0;
ioc->taskmgmt_in_progress = 0;
+ ioc->reset_status = rc;
if (ioc->alt_ioc) {
ioc->alt_ioc->ioc_reset_in_progress = 0;
ioc->alt_ioc->taskmgmt_quiesce_io = 0;
@@ -7180,7 +7264,7 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
ioc->alt_ioc, MPT_IOC_POST_RESET);
}
}
-
+exit:
dtmprintk(ioc,
printk(MYIOC_s_DEBUG_FMT
"HardResetHandler: completed (%d seconds): %s\n", ioc->name,