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Code

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -1632,6 +1632,92 @@ qla2x00_max_speed_sup_show(struct device *dev, struct device_attribute *attr,
ha->max_speed_sup ? "32Gps" : "16Gps");
}
static ssize_t
qla2x00_port_speed_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct scsi_qla_host *vha = shost_priv(dev_to_shost(dev));
ulong type, speed;
int oldspeed, rval;
int mode = QLA_SET_DATA_RATE_LR;
struct qla_hw_data *ha = vha->hw;
if (!IS_QLA27XX(vha->hw)) {
ql_log(ql_log_warn, vha, 0x70d8,
"Speed setting not supported \n");
return -EINVAL;
}
rval = kstrtol(buf, 10, &type);
speed = type;
if (type == 40 || type == 80 || type == 160 ||
type == 320) {
ql_dbg(ql_dbg_user, vha, 0x70d9,
"Setting will be affected after a loss of sync\n");
type = type/10;
mode = QLA_SET_DATA_RATE_NOLR;
}
oldspeed = ha->set_data_rate;
switch (type) {
case 0:
ha->set_data_rate = PORT_SPEED_AUTO;
break;
case 4:
ha->set_data_rate = PORT_SPEED_4GB;
break;
case 8:
ha->set_data_rate = PORT_SPEED_8GB;
break;
case 16:
ha->set_data_rate = PORT_SPEED_16GB;
break;
case 32:
ha->set_data_rate = PORT_SPEED_32GB;
break;
default:
ql_log(ql_log_warn, vha, 0x1199,
"Unrecognized speed setting:%lx. Setting Autoneg\n",
speed);
ha->set_data_rate = PORT_SPEED_AUTO;
}
if (qla2x00_chip_is_down(vha) || (oldspeed == ha->set_data_rate))
return -EINVAL;
ql_log(ql_log_info, vha, 0x70da,
"Setting speed to %lx Gbps \n", type);
rval = qla2x00_set_data_rate(vha, mode);
if (rval != QLA_SUCCESS)
return -EIO;
return strlen(buf);
}
static ssize_t
qla2x00_port_speed_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct scsi_qla_host *vha = shost_priv(dev_to_shost(dev));
struct qla_hw_data *ha = vha->hw;
ssize_t rval;
char *spd[7] = {"0", "0", "0", "4", "8", "16", "32"};
rval = qla2x00_get_data_rate(vha);
if (rval != QLA_SUCCESS) {
ql_log(ql_log_warn, vha, 0x70db,
"Unable to get port speed rval:%zd\n", rval);
return -EINVAL;
}
ql_log(ql_log_info, vha, 0x70d6,
"port speed:%d\n", ha->link_data_rate);
return scnprintf(buf, PAGE_SIZE, "%s\n", spd[ha->link_data_rate]);
}
/* ----- */
static ssize_t
@ -2128,6 +2214,8 @@ static DEVICE_ATTR_RW(ql2xexchoffld);
static DEVICE_ATTR_RW(ql2xiniexchg);
static DEVICE_ATTR(dif_bundle_statistics, 0444,
qla2x00_dif_bundle_statistics_show, NULL);
static DEVICE_ATTR(port_speed, 0644, qla2x00_port_speed_show,
qla2x00_port_speed_store);
struct device_attribute *qla2x00_host_attrs[] = {
@ -2167,6 +2255,7 @@ struct device_attribute *qla2x00_host_attrs[] = {
&dev_attr_max_speed_sup,
&dev_attr_zio_threshold,
&dev_attr_dif_bundle_statistics,
&dev_attr_port_speed,
NULL, /* reserve for qlini_mode */
NULL, /* reserve for ql2xiniexchg */
NULL, /* reserve for ql2xexchoffld */

6
drivers/scsi/qla2xxx/qla_def.h
View File

@ -3698,12 +3698,14 @@ struct qla_hw_data {
#define PORT_SPEED_UNKNOWN 0xFFFF
#define PORT_SPEED_1GB 0x00
#define PORT_SPEED_2GB 0x01
#define PORT_SPEED_AUTO 0x02
#define PORT_SPEED_4GB 0x03
#define PORT_SPEED_8GB 0x04
#define PORT_SPEED_16GB 0x05
#define PORT_SPEED_32GB 0x06
#define PORT_SPEED_10GB 0x13
uint16_t link_data_rate; /* F/W operating speed */
uint16_t set_data_rate; /* Set by user */
uint8_t current_topology;
uint8_t prev_topology;
@ -4232,6 +4234,10 @@ struct qla_hw_data {
#define FW_ABILITY_MAX_SPEED(ha) \
(ha->fw_ability_mask & FW_ABILITY_MAX_SPEED_MASK)
#define QLA_GET_DATA_RATE 0
#define QLA_SET_DATA_RATE_NOLR 1
#define QLA_SET_DATA_RATE_LR 2 /* Set speed and initiate LR */
/*
* Qlogic scsi host structure
*/

1
drivers/scsi/qla2xxx/qla_gbl.h
View File

@ -899,5 +899,6 @@ void qlt_update_host_map(struct scsi_qla_host *, port_id_t);
void qlt_remove_target_resources(struct qla_hw_data *);
void qlt_clr_qp_table(struct scsi_qla_host *vha);
void qlt_set_mode(struct scsi_qla_host *);
int qla2x00_set_data_rate(scsi_qla_host_t *vha, uint16_t mode);
#endif /* _QLA_GBL_H */

9
drivers/scsi/qla2xxx/qla_init.c
View File

@ -3882,8 +3882,17 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
WRT_REG_DWORD(&reg->isp24.rsp_q_in, 0);
WRT_REG_DWORD(&reg->isp24.rsp_q_out, 0);
}
qlt_24xx_config_rings(vha);
/* If the user has configured the speed, set it here */
if (ha->set_data_rate) {
ql_dbg(ql_dbg_init, vha, 0x00fd,
"Speed set by user : %s Gbps \n",
qla2x00_get_link_speed_str(ha, ha->set_data_rate));
icb->firmware_options_3 = (ha->set_data_rate << 13);
}
/* PCI posting */
RD_REG_DWORD(&ioreg->hccr);
}

62
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -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))