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block: sed-opal: Implement IOC_OPAL_DISCOVERY

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Add IOC_OPAL_DISCOVERY ioctl to return raw discovery data to a SED Opal
application. This allows the application to display drive capabilities
and state.

Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20230721211534.3437070-2-gjoyce@linux.vnet.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Greg Joyce
2023-07-21 16:15:32 -05:00
committed by Jens Axboe
parent 7222657e51
commit 9fb10726ec
3 changed files with 42 additions and 3 deletions
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6
include/uapi/linux/sed-opal.h
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@@ -173,6 +173,11 @@ struct opal_geometry {
__u8 __align[3];
};
struct opal_discovery {
__u64 data;
__u64 size;
};
#define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock)
#define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock)
#define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key)
@@ -192,5 +197,6 @@ struct opal_geometry {
#define IOC_OPAL_GET_STATUS _IOR('p', 236, struct opal_status)
#define IOC_OPAL_GET_LR_STATUS _IOW('p', 237, struct opal_lr_status)
#define IOC_OPAL_GET_GEOMETRY _IOR('p', 238, struct opal_geometry)
#define IOC_OPAL_DISCOVERY _IOW('p', 239, struct opal_discovery)
#endif /* _UAPI_SED_OPAL_H */