[SCSI] qla2xxx: Add Flash-Access-Control support for recent ISPs.

Given the low-level interface varies from one flash-part
manufacturer to the next, the Flash-Access-Control (FAC) mailbox
command makes the specific flash type transparent to the driver
by encapsulating a basic set of accessor and update routines.
Use these new routines where applicable by querying FAC opcode
get-sector-size at init-time.

Additional cleanups and
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index 05cf8380a486..98301931772a 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -1403,6 +1403,20 @@ struct access_chip_rsp_84xx {
 #define MBA_IDC_TIME_EXT        0x8102
 
 #define MBC_IDC_ACK             0x101
+#define MBC_FLASH_ACCESS_CTRL   0x3e    /* Control flash access. */
+
+/* Flash access control option field bit definitions */
+#define FAC_OPT_FORCE_SEMAPHORE         BIT_15
+#define FAC_OPT_REQUESTOR_ID            BIT_14
+#define FAC_OPT_CMD_SUBCODE             0xff
+
+/* Flash access control command subcodes */
+#define FAC_OPT_CMD_WRITE_PROTECT       0x00
+#define FAC_OPT_CMD_WRITE_ENABLE        0x01
+#define FAC_OPT_CMD_ERASE_SECTOR        0x02
+#define FAC_OPT_CMD_LOCK_SEMAPHORE      0x03
+#define FAC_OPT_CMD_UNLOCK_SEMAPHORE    0x04
+#define FAC_OPT_CMD_GET_SECTOR_SIZE     0x05
 
 struct nvram_81xx {
         /* NVRAM header. */