[SCSI] megaraid_sas: FW transition and q size changes
This patch has the following enhancements :
a. handles new transition states of FW to support controller hotplug.
b. It reduces by 1 the maximum cmds that the driver may send to FW.
c. Sends "Stop Processing" cmd to FW before returning failure from reset routine
d. Adds print in megasas_transition routine
e. Sends "RESET" flag to FW to do a soft reset of controller
to move from Operational to Ready state.
f. Sending correct pointer (cmd->sense) to pci_pool_free
Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 3531a14..930c06d 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -50,6 +50,7 @@
#define MFI_STATE_WAIT_HANDSHAKE 0x60000000
#define MFI_STATE_FW_INIT_2 0x70000000
#define MFI_STATE_DEVICE_SCAN 0x80000000
+#define MFI_STATE_BOOT_MESSAGE_PENDING 0x90000000
#define MFI_STATE_FLUSH_CACHE 0xA0000000
#define MFI_STATE_READY 0xB0000000
#define MFI_STATE_OPERATIONAL 0xC0000000
@@ -64,12 +65,18 @@
* READY : Move from OPERATIONAL to READY state; discard queue info
* MFIMODE : Discard (possible) low MFA posted in 64-bit mode (??)
* CLR_HANDSHAKE: FW is waiting for HANDSHAKE from BIOS or Driver
+ * HOTPLUG : Resume from Hotplug
+ * MFI_STOP_ADP : Send signal to FW to stop processing
*/
-#define MFI_INIT_ABORT 0x00000000
+#define MFI_INIT_ABORT 0x00000001
#define MFI_INIT_READY 0x00000002
#define MFI_INIT_MFIMODE 0x00000004
#define MFI_INIT_CLEAR_HANDSHAKE 0x00000008
-#define MFI_RESET_FLAGS MFI_INIT_READY|MFI_INIT_MFIMODE
+#define MFI_INIT_HOTPLUG 0x00000010
+#define MFI_STOP_ADP 0x00000020
+#define MFI_RESET_FLAGS MFI_INIT_READY| \
+ MFI_INIT_MFIMODE| \
+ MFI_INIT_ABORT
/**
* MFI frame flags