libata/ahci: enclosure management support

[deliverable/linux.git] / drivers / ata / libata-scsi.c

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 57a43649a4616bf0cdaeb9614d8489e3dbbb9758..b578b11caa7b4b303641c791110c94e23097f001 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -190,6 +190,85 @@ static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
        scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq);
 }
 
+static ssize_t
+ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
+                         const char *buf, size_t count)
+{
+       struct Scsi_Host *shost = class_to_shost(dev);
+       struct ata_port *ap = ata_shost_to_port(shost);
+       if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
+               return ap->ops->em_store(ap, buf, count);
+       return -EINVAL;
+}
+
+static ssize_t
+ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
+                        char *buf)
+{
+       struct Scsi_Host *shost = class_to_shost(dev);
+       struct ata_port *ap = ata_shost_to_port(shost);
+
+       if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
+               return ap->ops->em_show(ap, buf);
+       return -EINVAL;
+}
+DEVICE_ATTR(em_message, S_IRUGO | S_IWUGO,
+               ata_scsi_em_message_show, ata_scsi_em_message_store);
+EXPORT_SYMBOL_GPL(dev_attr_em_message);
+
+static ssize_t
+ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
+                             char *buf)
+{
+       struct Scsi_Host *shost = class_to_shost(dev);
+       struct ata_port *ap = ata_shost_to_port(shost);
+
+       return snprintf(buf, 23, "%d\n", ap->em_message_type);
+}
+DEVICE_ATTR(em_message_type, S_IRUGO,
+                 ata_scsi_em_message_type_show, NULL);
+EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
+
+static ssize_t
+ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
+               char *buf)
+{
+       struct scsi_device *sdev = to_scsi_device(dev);
+       struct ata_port *ap = ata_shost_to_port(sdev->host);
+       struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
+
+       if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY))
+               return ap->ops->sw_activity_show(atadev, buf);
+       return -EINVAL;
+}
+
+static ssize_t
+ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
+       const char *buf, size_t count)
+{
+       struct scsi_device *sdev = to_scsi_device(dev);
+       struct ata_port *ap = ata_shost_to_port(sdev->host);
+       struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
+       enum sw_activity val;
+       int rc;
+
+       if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
+               val = simple_strtoul(buf, NULL, 0);
+               switch (val) {
+               case OFF: case BLINK_ON: case BLINK_OFF:
+                       rc = ap->ops->sw_activity_store(atadev, val);
+                       if (!rc)
+                               return count;
+                       else
+                               return rc;
+               }
+       }
+       return -EINVAL;
+}
+DEVICE_ATTR(sw_activity, S_IWUGO | S_IRUGO, ata_scsi_activity_show,
+                       ata_scsi_activity_store);
+EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
+
 static void ata_scsi_invalid_field(struct scsi_cmnd *cmd,
                                   void (*done)(struct scsi_cmnd *))
 {