From: Michael Hernandez <michael.hernandez@xxxxxxxxxx>
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@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_gbl.h | 1 +
drivers/scsi/qla2xxx/qla_init.c | 2 ++
drivers/scsi/qla2xxx/qla_mbx.c | 33 +++++++++++++++++++++++++++++++++
3 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 0b6801f..f61fb8d 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -324,6 +324,7 @@ qla2x00_read_ram_word(scsi_qla_host_t *, uint32_t, uint32_t *);
extern int
qla2x00_write_ram_word(scsi_qla_host_t *, uint32_t, uint32_t);
+extern int qla2x00_get_data_rate(scsi_qla_host_t *);
/*
* Global Function Prototypes in qla_isr.c source file.
*/
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 73a7935..0f7ea6c 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -2266,6 +2266,8 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
clear_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
clear_bit(RSCN_UPDATE, &vha->dpc_flags);
+ qla2x00_get_data_rate(vha);
+
/* Determine what we need to do */
if (ha->current_topology == ISP_CFG_FL &&
(test_bit(LOCAL_LOOP_UPDATE, &flags))) {
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 @@ qla2x00_write_ram_word(scsi_qla_host_t *vha, uint32_t risc_addr, uint32_t data)
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;
+}
--
1.6.2.rc1.30.gd43c
--
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