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scsi: qla2xxx: Add support for setting port speed

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This patch adds sysfs node

1. There is a new sysfs node port_speed
2. The possible values are 2(Auto neg), 8, 16, 32
3. A value outside of the above defaults to Auto neg
4. Any update to the setting causes a link toggle
5. This feature is currently only for ISP27xx

Signed-off-by: Anil Gurumurthy <agurumurthy@marvell.com>
Signed-off-by: Quinn Tran <qtran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Anil Gurumurthy
2019-02-15 14:37:17 -08:00
committed by Martin K. Petersen
parent 192c4e9b93
commit 4910b524ac
5 changed files with 166 additions and 1 deletions
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62
drivers/scsi/qla2xxx/qla_mbx.c
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@@ -5250,6 +5250,66 @@ qla81xx_write_mpi_register(scsi_qla_host_t *vha, uint16_t *mb)
return rval;
}
/* Set the specified data rate */
int
qla2x00_set_data_rate(scsi_qla_host_t *vha, uint16_t mode)
{
int rval;
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
struct qla_hw_data *ha = vha->hw;
uint16_t val;
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1106,
"Entered %s speed:0x%x mode:0x%x.\n", __func__, ha->set_data_rate,
mode);
if (!IS_FWI2_CAPABLE(ha))
return QLA_FUNCTION_FAILED;
memset(mcp, 0, sizeof(*mcp));
switch (ha->set_data_rate) {
case PORT_SPEED_AUTO:
case PORT_SPEED_4GB:
case PORT_SPEED_8GB:
case PORT_SPEED_16GB:
case PORT_SPEED_32GB:
val = ha->set_data_rate;
break;
default:
ql_log(ql_log_warn, vha, 0x1199,
"Unrecognized speed setting:%d. Setting Autoneg\n",
ha->set_data_rate);
val = ha->set_data_rate = PORT_SPEED_AUTO;
break;
}
mcp->mb[0] = MBC_DATA_RATE;
mcp->mb[1] = mode;
mcp->mb[2] = val;
mcp->out_mb = MBX_2|MBX_1|MBX_0;
mcp->in_mb = MBX_2|MBX_1|MBX_0;
if (IS_QLA83XX(ha) || IS_QLA27XX(ha))
mcp->in_mb |= MBX_4|MBX_3;
mcp->tov = MBX_TOV_SECONDS;
mcp->flags = 0;
rval = qla2x00_mailbox_command(vha, mcp);
if (rval != QLA_SUCCESS) {
ql_dbg(ql_dbg_mbx, vha, 0x1107,
"Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
} else {
if (mcp->mb[1] != 0x7)
ql_dbg(ql_dbg_mbx, vha, 0x1179,
"Speed set:0x%x\n", mcp->mb[1]);
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1108,
"Done %s.\n", __func__);
}
return rval;
}
int
qla2x00_get_data_rate(scsi_qla_host_t *vha)
{
@@ -5265,7 +5325,7 @@ qla2x00_get_data_rate(scsi_qla_host_t *vha)
return QLA_FUNCTION_FAILED;
mcp->mb[0] = MBC_DATA_RATE;
mcp->mb[1] = 0;
mcp->mb[1] = QLA_GET_DATA_RATE;
mcp->out_mb = MBX_1|MBX_0;
mcp->in_mb = MBX_2|MBX_1|MBX_0;
if (IS_QLA83XX(ha) || IS_QLA27XX(ha))