[SCSI] qla4xxx: use CRB Register for Request Queue in-pointer

Switching from doorbell mechanism to CRB register based

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Shyam Sundar <shyam.sundar@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 494a28f0dc1d..2d2f9c879bfd 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -299,6 +299,10 @@ qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 {
         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
+
+        if (is_qla8022(ha))
+                qla4_8xxx_wr_32(ha, ha->nx_db_wr_ptr, 0);
+
         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
         mbox_cmd[1] = 0;
         mbox_cmd[2] = LSDW(init_fw_cb_dma);
@@ -472,6 +476,11 @@ int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
         init_fw_cb->fw_options |=
                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
                                        FWOPT_INITIATOR_MODE);
+
+        if (is_qla8022(ha))
+                init_fw_cb->fw_options |=
+                    __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
+
         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 
         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)