[SCSI] mpt2sas: Better handling DEAD IOC (PCI-E LInk down) error condition
Detection of Dead IOC has been done in fault_reset_work thread.
If IOC Doorbell is 0xFFFFFFFF, it will be detected as non-operation/DEAD IOC.
When a DEAD IOC is detected, the code is modified to remove that IOC and
all its attached devices from OS.
The PCI layer API pci_remove_bus_device() is called to remove the dead IOC.
Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h
index 3c3babc..61e5b24 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.h
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.h
@@ -623,6 +623,7 @@
TM_MUTEX_ON = 1,
};
+typedef void (*MPT2SAS_FLUSH_RUNNING_CMDS)(struct MPT2SAS_ADAPTER *ioc);
/**
* struct MPT2SAS_ADAPTER - per adapter struct
* @list: ioc_list
@@ -665,6 +666,7 @@
* @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
@@ -816,6 +818,7 @@
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;