[SCSI] mpt fusion: Add Firmware debug support

Signed-off-by: Kashyap Desai <kadesai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 787a126..96ac883 100644 (file)
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -107,6 +107,14 @@ module_param_call(mpt_debug_level, mpt_set_debug_level, param_get_int,
 MODULE_PARM_DESC(mpt_debug_level, " debug level - refer to mptdebug.h \
        - (default=0)");
 
+int mpt_fwfault_debug;
+EXPORT_SYMBOL(mpt_fwfault_debug);
+module_param_call(mpt_fwfault_debug, param_set_int, param_get_int,
+         &mpt_fwfault_debug, 0600);
+MODULE_PARM_DESC(mpt_fwfault_debug, "Enable detection of Firmware fault"
+       " and halt Firmware on fault - (default=0)");
+
+
 
 #ifdef MFCNT
 static int mfcounter = 0;
@@ -6337,6 +6345,33 @@ mpt_print_ioc_summary(MPT_ADAPTER *ioc, char *buffer, int *size, int len, int sh
        *size = y;
 }
 
+
+/**
+ *     mpt_halt_firmware - Halts the firmware if it is operational and panic
+ *     the kernel
+ *     @ioc: Pointer to MPT_ADAPTER structure
+ *
+ **/
+void
+mpt_halt_firmware(MPT_ADAPTER *ioc)
+{
+       u32      ioc_raw_state;
+
+       ioc_raw_state = mpt_GetIocState(ioc, 0);
+
+       if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_FAULT) {
+               printk(MYIOC_s_ERR_FMT "IOC is in FAULT state (%04xh)!!!\n",
+                       ioc->name, ioc_raw_state & MPI_DOORBELL_DATA_MASK);
+               panic("%s: IOC Fault (%04xh)!!!\n", ioc->name,
+                       ioc_raw_state & MPI_DOORBELL_DATA_MASK);
+       } else {
+               CHIPREG_WRITE32(&ioc->chip->Doorbell, 0xC0FFEE00);
+               panic("%s: Firmware is halted due to command timeout\n",
+                       ioc->name);
+       }
+}
+EXPORT_SYMBOL(mpt_halt_firmware);
+
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 /*
  *     Reset Handling
@@ -6369,6 +6404,8 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
        printk(MYIOC_s_INFO_FMT "HardResetHandler Entered!\n", ioc->name);
        printk("MF count 0x%x !\n", ioc->mfcnt);
 #endif
+       if (mpt_fwfault_debug)
+               mpt_halt_firmware(ioc);
 
        /* Reset the adapter. Prevent more than 1 call to
         * mpt_do_ioc_recovery at any instant in time.

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index dff048c..b3e981d 100644 (file)
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -922,11 +922,14 @@ extern void        mpt_free_fw_memory(MPT_ADAPTER *ioc);
 extern int      mpt_findImVolumes(MPT_ADAPTER *ioc);
 extern int      mptbase_sas_persist_operation(MPT_ADAPTER *ioc, u8 persist_opcode);
 extern int      mpt_raid_phys_disk_pg0(MPT_ADAPTER *ioc, u8 phys_disk_num, pRaidPhysDiskPage0_t phys_disk);
+extern void     mpt_halt_firmware(MPT_ADAPTER *ioc);
+
 
 /*
  *  Public data decl's...
  */
 extern struct list_head          ioc_list;
+extern int mpt_fwfault_debug;
 
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 #endif         /* } __KERNEL__ */

diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index ee09041..e62c6bc 100644 (file)
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -1846,6 +1846,9 @@ mptscsih_abort(struct scsi_cmnd * SCpnt)
        if (hd->timeouts < -1)
                hd->timeouts++;
 
+       if (mpt_fwfault_debug)
+               mpt_halt_firmware(ioc);
+
        /* Most important!  Set TaskMsgContext to SCpnt's MsgContext!
         * (the IO to be ABORT'd)
         *