[SCSI] qla2xxx: Get the link data rate explicitly during device resync.
When the hba port gets logged out of the fabric, or other
such transitional state when the physical link is still present,
the driver doesn't receive a loop up asyn event (where the link
data rate currently gets set). Hence send a explicit mailbox command
to get the link rate in such conditions.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 05d595d..e91f3d8 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -3643,3 +3643,36 @@
return rval;
}
+
+int
+qla2x00_get_data_rate(scsi_qla_host_t *vha)
+{
+ int rval;
+ mbx_cmd_t mc;
+ mbx_cmd_t *mcp = &mc;
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!IS_FWI2_CAPABLE(ha))
+ return QLA_FUNCTION_FAILED;
+
+ DEBUG11(printk(KERN_INFO "%s(%ld): entered.\n", __func__, vha->host_no));
+
+ mcp->mb[0] = MBC_DATA_RATE;
+ mcp->mb[1] = 0;
+ mcp->out_mb = MBX_1|MBX_0;
+ mcp->in_mb = MBX_2|MBX_1|MBX_0;
+ mcp->tov = MBX_TOV_SECONDS;
+ mcp->flags = 0;
+ rval = qla2x00_mailbox_command(vha, mcp);
+ if (rval != QLA_SUCCESS) {
+ DEBUG2_3_11(printk(KERN_INFO "%s(%ld): failed=%x mb[0]=%x.\n",
+ __func__, vha->host_no, rval, mcp->mb[0]));
+ } else {
+ DEBUG11(printk(KERN_INFO
+ "%s(%ld): done.\n", __func__, vha->host_no));
+ if (mcp->mb[1] != 0x7)
+ ha->link_data_rate = mcp->mb[1];
+ }
+
+ return rval;
+}