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author | Joe Carnuccio <joe.carnuccio@cavium.com> | 2020-02-12 13:44:12 -0800 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-02-21 18:30:59 -0500 |
commit | 07553b1e83b46414caa693ba10d1a16487409b61 (patch) | |
tree | 818e966461e60ab6b556da49d03ff90ff4a3f6d6 /drivers | |
parent | 1bf630fddd505e4d3e1c7e857eb54f8da787fe9a (diff) | |
download | linux-07553b1e83b46414caa693ba10d1a16487409b61.tar.bz2 |
scsi: qla2xxx: Add beacon LED config sysfs interface
This patch provides an interface to do the following (using MBC 0x3B):
- Displays (in hex) the LED config words for all three LEDs.
- Programs the config words for one LED or for all three LEDs.
The sysfs node defined is named beacon_config.
First, to allow driver to gain LED control, do this:
# echo 1 > /sys/class/scsi_host/host#/beacon
Then, to display config words for all three LEDs do this:
# cat /sys/class/scsi_host/host#/beacon_config
To set config words for all three LEDs do this:
# echo 3 xxxx yyyy zzzz > /sys/class/scsi_host/host#/beacon_config
Or, to set config word for a specific single LED n do this:
# echo n xxxx > /sys/class/scsi_host/host#/beacon_config
where n is the LED number (0, 1, 2)
Finally, to restore LED control back to firmware, do this:
# echo 0 > /sys/class/scsi_host/host#/beacon
Link: https://lore.kernel.org/r/20200212214436.25532-2-hmadhani@marvell.com
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/scsi/qla2xxx/qla_attr.c | 76 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 1 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_gbl.h | 1 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 57 |
4 files changed, 135 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index d7e7043f9eab..d6a59c92c5a8 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1324,6 +1324,79 @@ qla2x00_beacon_store(struct device *dev, struct device_attribute *attr, } static ssize_t +qla2x00_beacon_config_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + scsi_qla_host_t *vha = shost_priv(class_to_shost(dev)); + struct qla_hw_data *ha = vha->hw; + uint16_t led[3] = { 0 }; + + if (!IS_QLA2031(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) + return -EPERM; + + if (ql26xx_led_config(vha, 0, led)) + return scnprintf(buf, PAGE_SIZE, "\n"); + + return scnprintf(buf, PAGE_SIZE, "%#04hx %#04hx %#04hx\n", + led[0], led[1], led[2]); +} + +static ssize_t +qla2x00_beacon_config_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + scsi_qla_host_t *vha = shost_priv(class_to_shost(dev)); + struct qla_hw_data *ha = vha->hw; + uint16_t options = BIT_0; + uint16_t led[3] = { 0 }; + uint16_t word[4]; + int n; + + if (!IS_QLA2031(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) + return -EPERM; + + n = sscanf(buf, "%hx %hx %hx %hx", word+0, word+1, word+2, word+3); + if (n == 4) { + if (word[0] == 3) { + options |= BIT_3|BIT_2|BIT_1; + led[0] = word[1]; + led[1] = word[2]; + led[2] = word[3]; + goto write; + } + return -EINVAL; + } + + if (n == 2) { + /* check led index */ + if (word[0] == 0) { + options |= BIT_2; + led[0] = word[1]; + goto write; + } + if (word[0] == 1) { + options |= BIT_3; + led[1] = word[1]; + goto write; + } + if (word[0] == 2) { + options |= BIT_1; + led[2] = word[1]; + goto write; + } + return -EINVAL; + } + + return -EINVAL; + +write: + if (ql26xx_led_config(vha, options, led)) + return -EFAULT; + + return count; +} + +static ssize_t qla2x00_optrom_bios_version_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -2264,6 +2337,8 @@ static DEVICE_ATTR(zio_timer, S_IRUGO | S_IWUSR, qla2x00_zio_timer_show, qla2x00_zio_timer_store); static DEVICE_ATTR(beacon, S_IRUGO | S_IWUSR, qla2x00_beacon_show, qla2x00_beacon_store); +static DEVICE_ATTR(beacon_config, 0644, qla2x00_beacon_config_show, + qla2x00_beacon_config_store); static DEVICE_ATTR(optrom_bios_version, S_IRUGO, qla2x00_optrom_bios_version_show, NULL); static DEVICE_ATTR(optrom_efi_version, S_IRUGO, @@ -2327,6 +2402,7 @@ struct device_attribute *qla2x00_host_attrs[] = { &dev_attr_zio, &dev_attr_zio_timer, &dev_attr_beacon, + &dev_attr_beacon_config, &dev_attr_optrom_bios_version, &dev_attr_optrom_efi_version, &dev_attr_optrom_fcode_version, diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index ed32e9715794..b59643883ad1 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -1134,6 +1134,7 @@ static inline bool qla2xxx_is_valid_mbs(unsigned int mbs) #define MBC_GET_FIRMWARE_OPTION 0x28 /* Get Firmware Options. */ #define MBC_GET_MEM_OFFLOAD_CNTRL_STAT 0x34 /* Memory Offload ctrl/Stat*/ #define MBC_SET_FIRMWARE_OPTION 0x38 /* Set Firmware Options. */ +#define MBC_SET_GET_FC_LED_CONFIG 0x3b /* Set/Get FC LED config */ #define MBC_LOOP_PORT_BYPASS 0x40 /* Loop Port Bypass. */ #define MBC_LOOP_PORT_ENABLE 0x41 /* Loop Port Enable. */ #define MBC_GET_RESOURCE_COUNTS 0x42 /* Get Resource Counts. */ diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 2a64729a2bc5..156ad11a15c4 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -844,6 +844,7 @@ extern void qla82xx_clear_pending_mbx(scsi_qla_host_t *); extern int qla82xx_read_temperature(scsi_qla_host_t *); extern int qla8044_read_temperature(scsi_qla_host_t *); extern int qla2x00_read_sfp_dev(struct scsi_qla_host *, char *, int); +extern int ql26xx_led_config(scsi_qla_host_t *, uint16_t, uint16_t *); /* BSG related functions */ extern int qla24xx_bsg_request(struct bsg_job *); diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 9e09964f5c0e..e1916bec5e36 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -6688,3 +6688,60 @@ int qla2xxx_read_remote_register(scsi_qla_host_t *vha, uint32_t addr, return rval; } + +int +ql26xx_led_config(scsi_qla_host_t *vha, uint16_t options, uint16_t *led) +{ + struct qla_hw_data *ha = vha->hw; + mbx_cmd_t mc; + mbx_cmd_t *mcp = &mc; + int rval; + + if (!IS_QLA2031(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) + return QLA_FUNCTION_FAILED; + + ql_dbg(ql_dbg_mbx, vha, 0x7070, "Entered %s (options=%x).\n", + __func__, options); + + mcp->mb[0] = MBC_SET_GET_FC_LED_CONFIG; + mcp->mb[1] = options; + mcp->out_mb = MBX_1|MBX_0; + mcp->in_mb = MBX_1|MBX_0; + if (options & BIT_0) { + if (options & BIT_1) { + mcp->mb[2] = led[2]; + mcp->out_mb |= MBX_2; + } + if (options & BIT_2) { + mcp->mb[3] = led[0]; + mcp->out_mb |= MBX_3; + } + if (options & BIT_3) { + mcp->mb[4] = led[1]; + mcp->out_mb |= MBX_4; + } + } else { + mcp->in_mb |= MBX_4|MBX_3|MBX_2; + } + mcp->tov = MBX_TOV_SECONDS; + mcp->flags = 0; + rval = qla2x00_mailbox_command(vha, mcp); + if (rval) { + ql_dbg(ql_dbg_mbx, vha, 0x7071, "Failed %s %x (mb=%x,%x)\n", + __func__, rval, mcp->mb[0], mcp->mb[1]); + return rval; + } + + if (options & BIT_0) { + ha->beacon_blink_led = 0; + ql_dbg(ql_dbg_mbx, vha, 0x7072, "Done %s\n", __func__); + } else { + led[2] = mcp->mb[2]; + led[0] = mcp->mb[3]; + led[1] = mcp->mb[4]; + ql_dbg(ql_dbg_mbx, vha, 0x7073, "Done %s (led=%x,%x,%x)\n", + __func__, led[0], led[1], led[2]); + } + + return rval; +} |