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path: root/drivers/scsi/qla2xxx/qla_attr.c
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Diffstat (limited to 'drivers/scsi/qla2xxx/qla_attr.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_attr.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 2b9e329a240c..488b3d16427b 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -308,6 +308,61 @@ static struct bin_attribute sysfs_optrom_ctl_attr = {
.write = qla2x00_sysfs_write_optrom_ctl,
};
+static ssize_t
+qla2x00_sysfs_read_vpd(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+ unsigned long flags;
+
+ if (!capable(CAP_SYS_ADMIN) || off != 0)
+ return 0;
+
+ if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha))
+ return -ENOTSUPP;
+
+ /* Read NVRAM. */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ha->isp_ops.read_nvram(ha, (uint8_t *)buf, ha->vpd_base, ha->vpd_size);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return ha->vpd_size;
+}
+
+static ssize_t
+qla2x00_sysfs_write_vpd(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+ unsigned long flags;
+
+ if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->vpd_size)
+ return 0;
+
+ if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha))
+ return -ENOTSUPP;
+
+ /* Write NVRAM. */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ha->isp_ops.write_nvram(ha, (uint8_t *)buf, ha->vpd_base, count);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return count;
+}
+
+static struct bin_attribute sysfs_vpd_attr = {
+ .attr = {
+ .name = "vpd",
+ .mode = S_IRUSR | S_IWUSR,
+ .owner = THIS_MODULE,
+ },
+ .size = 0,
+ .read = qla2x00_sysfs_read_vpd,
+ .write = qla2x00_sysfs_write_vpd,
+};
+
void
qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
{
@@ -318,6 +373,7 @@ qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_optrom_attr);
sysfs_create_bin_file(&host->shost_gendev.kobj,
&sysfs_optrom_ctl_attr);
+ sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_vpd_attr);
}
void
@@ -330,6 +386,7 @@ qla2x00_free_sysfs_attr(scsi_qla_host_t *ha)
sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_optrom_attr);
sysfs_remove_bin_file(&host->shost_gendev.kobj,
&sysfs_optrom_ctl_attr);
+ sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_vpd_attr);
if (ha->beacon_blink_led == 1)
ha->isp_ops.beacon_off(ha);
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