#include <linux/sort.h>
#include <linux/io.h>
#include <linux/time.h>
+#include <linux/kthread.h>
#include <linux/aer.h>
#include "mpt2sas_base.h"
ioc->fwfault_debug = mpt2sas_fwfault_debug;
return 0;
}
+
module_param_call(mpt2sas_fwfault_debug, _scsih_set_fwfault_debug,
param_get_int, &mpt2sas_fwfault_debug, 0644);
/**
+ * mpt2sas_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 mpt2sas_remove_dead_ioc_func(void *arg)
+{
+ struct MPT2SAS_ADAPTER *ioc = (struct MPT2SAS_ADAPTER *)arg;
+ struct pci_dev *pdev;
+
+ if ((ioc == NULL))
+ return -1;
+
+ pdev = ioc->pdev;
+ if ((pdev == NULL))
+ return -1;
+ pci_remove_bus_device(pdev);
+ return 0;
+}
+
+
+/**
* _base_fault_reset_work - workq handling ioc fault conditions
* @work: input argument, used to derive ioc
* Context: sleep.
unsigned long flags;
u32 doorbell;
int rc;
+ struct task_struct *p;
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
if (ioc->shost_recovery)
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
doorbell = mpt2sas_base_get_iocstate(ioc, 0);
+ if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) {
+ printk(MPT2SAS_INFO_FMT "%s : SAS host is non-operational !!!!\n",
+ ioc->name, __func__);
+
+ /*
+ * Call _scsih_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.
+ */
+ ioc->schedule_dead_ioc_flush_running_cmds(ioc);
+ /*
+ * Set remove_host flag early since kernel thread will
+ * take some time to execute.
+ */
+ ioc->remove_host = 1;
+ /*Remove the Dead Host */
+ p = kthread_run(mpt2sas_remove_dead_ioc_func, ioc,
+ "mpt2sas_dead_ioc_%d", ioc->id);
+ if (IS_ERR(p)) {
+ printk(MPT2SAS_ERR_FMT
+ "%s: Running mpt2sas_dead_ioc thread failed !!!!\n",
+ ioc->name, __func__);
+ } else {
+ printk(MPT2SAS_ERR_FMT
+ "%s: Running mpt2sas_dead_ioc thread success !!!!\n",
+ ioc->name, __func__);
+ }
+
+ return; /* don't rearm timer */
+ }
+
if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
TM_MUTEX_ON = 1,
};
+typedef void (*MPT2SAS_FLUSH_RUNNING_CMDS)(struct MPT2SAS_ADAPTER *ioc);
/**
* struct MPT2SAS_ADAPTER - per adapter struct
* @list: ioc_list
* @msix_vector_count: number msix vectors
* @cpu_msix_table: table for mapping cpus to msix index
* @cpu_msix_table_sz: table size
+ * @schedule_dead_ioc_flush_running_cmds: callback to flush pending commands
* @scsi_io_cb_idx: shost generated commands
* @tm_cb_idx: task management commands
* @scsih_cb_idx: scsih internal commands
resource_size_t **reply_post_host_index;
u16 cpu_msix_table_sz;
u32 ioc_reset_count;
+ MPT2SAS_FLUSH_RUNNING_CMDS schedule_dead_ioc_flush_running_cmds;
/* internal commands, callback index */
u8 scsi_io_cb_idx;