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authorMatthew R. Ochs <mrochs@linux.vnet.ibm.com>2017-06-21 21:16:13 -0500
committerMartin K. Petersen <martin.petersen@oracle.com>2017-06-26 15:01:12 -0400
commit9cf43a360450ddd758b0021d1b55f1cc5643b9ed (patch)
tree0d314def42874dd878a05dd713549d77dd255bd8 /include/uapi/scsi
parentefa1c818d3458fe97d8f83f40051518b44183234 (diff)
scsi: cxlflash: Support LUN provisioning
Adopt the SISLite AFU LUN provisioning capability to allow future CXL Flash adapters the ability to better manage storage. Update the SISLite header with the changes necessary to support LUN provision operations and create a host ioctl interface for user LUN management software. Also update the cxlflash documentation to describe this new host ioctl. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/uapi/scsi')
-rw-r--r--include/uapi/scsi/cxlflash_ioctl.h31
1 files changed, 26 insertions, 5 deletions
diff --git a/include/uapi/scsi/cxlflash_ioctl.h b/include/uapi/scsi/cxlflash_ioctl.h
index 87e1f63029bf..ad79c34f4d11 100644
--- a/include/uapi/scsi/cxlflash_ioctl.h
+++ b/include/uapi/scsi/cxlflash_ioctl.h
@@ -202,14 +202,34 @@ union cxlflash_ioctls {
#define HT_CXLFLASH_VERSION_0 0
struct ht_cxlflash_hdr {
- __u16 version; /* Version data */
- __u16 subcmd; /* Sub-command */
- __u16 rsvd[2]; /* Reserved for future use */
- __u64 flags; /* Input flags */
- __u64 return_flags; /* Returned flags */
+ __u16 version; /* Version data */
+ __u16 subcmd; /* Sub-command */
+ __u16 rsvd[2]; /* Reserved for future use */
+ __u64 flags; /* Input flags */
+ __u64 return_flags; /* Returned flags */
+};
+
+#define HT_CXLFLASH_LUN_PROVISION_SUBCMD_CREATE_LUN 0x0001
+#define HT_CXLFLASH_LUN_PROVISION_SUBCMD_DELETE_LUN 0x0002
+#define HT_CXLFLASH_LUN_PROVISION_SUBCMD_QUERY_PORT 0x0003
+#define HT_CXLFLASH_LUN_PROVISION_WWID_LEN 16
+
+struct ht_cxlflash_lun_provision {
+ struct ht_cxlflash_hdr hdr; /* Common fields */
+ __u16 port; /* Target port for provision request */
+ __u16 reserved16[3]; /* Reserved for future use */
+ __u64 size; /* Size of LUN (4K blocks) */
+ __u64 lun_id; /* SCSI LUN ID */
+ __u8 wwid[HT_CXLFLASH_LUN_PROVISION_WWID_LEN]; /* Page83 WWID, NAA-6 */
+ __u64 max_num_luns; /* Maximum number of LUNs provisioned */
+ __u64 cur_num_luns; /* Current number of LUNs provisioned */
+ __u64 max_cap_port; /* Total capacity for port (4K blocks) */
+ __u64 cur_cap_port; /* Current capacity for port (4K blocks) */
+ __u64 reserved[8]; /* Reserved for future use */
};
union cxlflash_ht_ioctls {
+ struct ht_cxlflash_lun_provision lun_provision;
};
#define MAX_HT_CXLFLASH_IOCTL_SZ (sizeof(union cxlflash_ht_ioctls))
@@ -218,6 +238,7 @@ union cxlflash_ht_ioctls {
* CXL Flash host ioctls start at the top of the reserved CXL_MAGIC
* region (0xBF) and grow downwards.
*/
+#define HT_CXLFLASH_LUN_PROVISION CXL_IOWR(0xBF, ht_cxlflash_lun_provision)
#endif /* ifndef _CXLFLASH_IOCTL_H */

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