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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/scsi/qla2xxx/qla_def.h | |
| parent | scsi: target: use an enum to track emulate_ua_intlck_ctrl (diff) | |
| download | linux-dev-07553b1e83b46414caa693ba10d1a16487409b61.tar.xz linux-dev-07553b1e83b46414caa693ba10d1a16487409b61.zip | |
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/scsi/qla2xxx/qla_def.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 1 |
1 files changed, 1 insertions, 0 deletions
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. */ |