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ses: add enclosure logical id

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Export the NAA logical id for the enclosure.  This is optionally
available from the sas_transport_class, but it is really a property of
the enclosure.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Reviewed-by: Jens Axboe <axboe@fb.com>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Dan Williams 2014-12-30 14:46:16 -08:00 committed by Christoph Hellwig
parent 15a0fbbc8e
commit 967f7bab0e
3 changed files with 23 additions and 0 deletions
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13
drivers/misc/enclosure.c
View file

@ -432,8 +432,21 @@ static ssize_t components_show(struct device *cdev,
}
static DEVICE_ATTR_RO(components);
static ssize_t id_show(struct device *cdev,
struct device_attribute *attr,
char *buf)
{
struct enclosure_device *edev = to_enclosure_device(cdev);
if (edev->cb->show_id)
return edev->cb->show_id(edev, buf);
return -EINVAL;
}
static DEVICE_ATTR_RO(id);
static struct attribute *enclosure_class_attrs[] = {
&dev_attr_components.attr,
&dev_attr_id.attr,
NULL,
};
ATTRIBUTE_GROUPS(enclosure_class);

9
drivers/scsi/ses.c
View file

@ -258,6 +258,14 @@ static int ses_set_active(struct enclosure_device *edev,
return ses_set_page2_descriptor(edev, ecomp, desc);
}
static int ses_show_id(struct enclosure_device *edev, char *buf)
{
struct ses_device *ses_dev = edev->scratch;
unsigned long long id = get_unaligned_be64(ses_dev->page1+8+4);
return sprintf(buf, "%#llx\n", id);
}
static struct enclosure_component_callbacks ses_enclosure_callbacks = {
.get_fault = ses_get_fault,
.set_fault = ses_set_fault,
@ -265,6 +273,7 @@ static struct enclosure_component_callbacks ses_enclosure_callbacks = {
.get_locate = ses_get_locate,
.set_locate = ses_set_locate,
.set_active = ses_set_active,
.show_id = ses_show_id,
};
struct ses_host_edev {

1
include/linux/enclosure.h
View file

@ -79,6 +79,7 @@ struct enclosure_component_callbacks {
int (*set_locate)(struct enclosure_device *,
struct enclosure_component *,
enum enclosure_component_setting);
int (*show_id)(struct enclosure_device *, char *buf);
};