diff options
Diffstat (limited to 'drivers/scsi/pm8001/pm8001_ctl.c')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_ctl.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index d99f41c2ca13..5a19e1930b4b 100644 --- a/drivers/scsi/pm8001/pm8001_ctl.c +++ b/drivers/scsi/pm8001/pm8001_ctl.c @@ -309,6 +309,39 @@ static ssize_t pm8001_ctl_aap_log_show(struct device *cdev, } static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL); /** + * pm8001_ctl_bios_version_show - Bios version Display + * @cdev:pointer to embedded class device + * @buf:the buffer returned + * A sysfs 'read-only' shost attribute. + */ +static ssize_t pm8001_ctl_bios_version_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); + struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; + char *str = buf; + void *virt_addr; + int bios_index; + DECLARE_COMPLETION_ONSTACK(completion); + struct pm8001_ioctl_payload payload; + + pm8001_ha->nvmd_completion = &completion; + payload.minor_function = 7; + payload.offset = 0; + payload.length = 4096; + payload.func_specific = kzalloc(4096, GFP_KERNEL); + PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload); + wait_for_completion(&completion); + virt_addr = pm8001_ha->memoryMap.region[NVMD].virt_ptr; + for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT; + bios_index++) + str += sprintf(str, "%c", + *((u8 *)((u8 *)virt_addr+bios_index))); + return str - buf; +} +static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL); +/** * pm8001_ctl_aap_log_show - IOP event log * @cdev: pointer to embedded class device * @buf: the buffer returned @@ -609,6 +642,7 @@ struct device_attribute *pm8001_host_attrs[] = { &dev_attr_sas_spec_support, &dev_attr_logging_level, &dev_attr_host_sas_address, + &dev_attr_bios_version, NULL, }; |