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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.c63
1 files changed, 62 insertions, 1 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 7956a10f9488..517621fa8bca 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",