@@ -25,10 +25,10 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. */
-#include "standard-headers/linux/types.h"
-#include "standard-headers/linux/virtio_ids.h"
-#include "standard-headers/linux/virtio_config.h"
-#include "standard-headers/linux/virtio_types.h"
+#include <linux/types.h>
+#include <linux/virtio_ids.h>
+#include <linux/virtio_config.h>
+#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
@@ -40,6 +40,7 @@
#define VIRTIO_BLK_F_MQ 12 /* support more than one vq */
#define VIRTIO_BLK_F_DISCARD 13 /* DISCARD is supported */
#define VIRTIO_BLK_F_WRITE_ZEROES 14 /* WRITE ZEROES is supported */
+#define VIRTIO_BLK_F_ZONED 17 /* Zoned block device */
/* Legacy feature bits */
#ifndef VIRTIO_BLK_NO_LEGACY
@@ -47,8 +48,10 @@
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
#define VIRTIO_BLK_F_FLUSH 9 /* Flush command supported */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */
+#ifndef __KERNEL__
/* Old (deprecated) name for VIRTIO_BLK_F_FLUSH. */
#define VIRTIO_BLK_F_WCE VIRTIO_BLK_F_FLUSH
+#endif
#endif /* !VIRTIO_BLK_NO_LEGACY */
#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
@@ -63,8 +66,8 @@ struct virtio_blk_config {
/* geometry of the device (if VIRTIO_BLK_F_GEOMETRY) */
struct virtio_blk_geometry {
__virtio16 cylinders;
- uint8_t heads;
- uint8_t sectors;
+ __u8 heads;
+ __u8 sectors;
} geometry;
/* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
@@ -72,17 +75,17 @@ struct virtio_blk_config {
/* the next 4 entries are guarded by VIRTIO_BLK_F_TOPOLOGY */
/* exponent for physical block per logical block. */
- uint8_t physical_block_exp;
+ __u8 physical_block_exp;
/* alignment offset in logical blocks. */
- uint8_t alignment_offset;
+ __u8 alignment_offset;
/* minimum I/O size without performance penalty in logical blocks. */
__virtio16 min_io_size;
/* optimal sustained I/O size in logical blocks. */
__virtio32 opt_io_size;
/* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
- uint8_t wce;
- uint8_t unused;
+ __u8 wce;
+ __u8 unused;
/* number of vqs, only available when VIRTIO_BLK_F_MQ is set */
__virtio16 num_queues;
@@ -116,10 +119,24 @@ struct virtio_blk_config {
* Set if a VIRTIO_BLK_T_WRITE_ZEROES request may result in the
* deallocation of one or more of the sectors.
*/
- uint8_t write_zeroes_may_unmap;
+ __u8 write_zeroes_may_unmap;
- uint8_t unused1[3];
-} QEMU_PACKED;
+ __u8 unused1[3];
+
+ /* Secure erase fields that are defined in the virtio spec */
+ __u8 sec_erase[12];
+
+ /* Zoned block device characteristics (if VIRTIO_BLK_F_ZONED) */
+ struct virtio_blk_zoned_characteristics {
+ __virtio32 zone_sectors;
+ __virtio32 max_open_zones;
+ __virtio32 max_active_zones;
+ __virtio32 max_append_sectors;
+ __virtio32 write_granularity;
+ __u8 model;
+ __u8 unused2[3];
+ } zoned;
+} __attribute__((packed));
/*
* Command types
@@ -153,6 +170,24 @@ struct virtio_blk_config {
/* Write zeroes command */
#define VIRTIO_BLK_T_WRITE_ZEROES 13
+/* Zone append command */
+#define VIRTIO_BLK_T_ZONE_APPEND 15
+
+/* Report zones command */
+#define VIRTIO_BLK_T_ZONE_REPORT 16
+
+/* Open zone command */
+#define VIRTIO_BLK_T_ZONE_OPEN 18
+
+/* Close zone command */
+#define VIRTIO_BLK_T_ZONE_CLOSE 20
+
+/* Finish zone command */
+#define VIRTIO_BLK_T_ZONE_FINISH 22
+
+/* Reset zone command */
+#define VIRTIO_BLK_T_ZONE_RESET 24
+
#ifndef VIRTIO_BLK_NO_LEGACY
/* Barrier before this op. */
#define VIRTIO_BLK_T_BARRIER 0x80000000
@@ -172,17 +207,100 @@ struct virtio_blk_outhdr {
__virtio64 sector;
};
+/*
+ * Supported zoned device models.
+ */
+
+/* Host-managed zoned device */
+#define VIRTIO_BLK_Z_HM 1
+/* Host-aware zoned device */
+#define VIRTIO_BLK_Z_HA 2
+
+/* ZBD Management Out ALL flag */
+#define VIRTIO_BLK_ZONED_FLAG_ALL (1 << 0)
+
+/*
+ * Request header for zoned devices.
+ * The first three fields are identical in layout to
+ * struct virtio_blk_outhdr.
+ */
+struct virtio_blk_zoned_outhdr {
+ /* VIRTIO_BLK_T* */
+ __virtio32 type;
+ /* io priority. */
+ __virtio32 ioprio;
+ /* Sector (ie. 512 byte offset) */
+ __virtio64 sector;
+ /* Zoned request flags */
+ __virtio32 flags;
+};
+
+/*
+ * Zone descriptor. A part of VIRTIO_BLK_T_ZONE_REPORT command reply.
+ */
+struct virtio_blk_zone_descriptor {
+ /* Zone capacity */
+ __virtio64 z_cap;
+ /* The starting sector of the zone */
+ __virtio64 z_start;
+ /* Zone write pointer position in sectors */
+ __virtio64 z_wp;
+ /* Zone type */
+ __u8 z_type;
+ /* Zone state */
+ __u8 z_state;
+ __u8 reserved[38];
+};
+
+struct virtio_blk_zone_report {
+ __virtio64 nr_zones;
+ __u8 reserved[56];
+ struct virtio_blk_zone_descriptor zones[];
+};
+
+/*
+ * Supported zone types.
+ */
+
+/* Conventional zone */
+#define VIRTIO_BLK_ZT_CONV 1
+/* Sequential Write Required zone */
+#define VIRTIO_BLK_ZT_SWR 2
+/* Sequential Write Preferred zone */
+#define VIRTIO_BLK_ZT_SWP 3
+
+/*
+ * Zone states that are available for zones of all types.
+ */
+
+/* Not a write pointer (conventional zones only) */
+#define VIRTIO_BLK_ZS_NOT_WP 0
+/* Empty */
+#define VIRTIO_BLK_ZS_EMPTY 1
+/* Implicitly Open */
+#define VIRTIO_BLK_ZS_IOPEN 2
+/* Explicitly Open */
+#define VIRTIO_BLK_ZS_EOPEN 3
+/* Closed */
+#define VIRTIO_BLK_ZS_CLOSED 4
+/* Read-Only */
+#define VIRTIO_BLK_ZS_RDONLY 13
+/* Full */
+#define VIRTIO_BLK_ZS_FULL 14
+/* Offline */
+#define VIRTIO_BLK_ZS_OFFLINE 15
+
/* Unmap this range (only valid for write zeroes command) */
#define VIRTIO_BLK_WRITE_ZEROES_FLAG_UNMAP 0x00000001
/* Discard/write zeroes range for each request. */
struct virtio_blk_discard_write_zeroes {
/* discard/write zeroes start sector */
- uint64_t sector;
+ __le64 sector;
/* number of discard/write zeroes sectors */
- uint32_t num_sectors;
+ __le32 num_sectors;
/* flags for this range */
- uint32_t flags;
+ __le32 flags;
};
#ifndef VIRTIO_BLK_NO_LEGACY
@@ -198,4 +316,11 @@ struct virtio_scsi_inhdr {
#define VIRTIO_BLK_S_OK 0
#define VIRTIO_BLK_S_IOERR 1
#define VIRTIO_BLK_S_UNSUPP 2
+
+/* Error codes that are specific to zoned block devices */
+#define VIRTIO_BLK_S_ZONE_INVALID_CMD 3
+#define VIRTIO_BLK_S_ZONE_UNALIGNED_WP 4
+#define VIRTIO_BLK_S_ZONE_OPEN_RESOURCE 5
+#define VIRTIO_BLK_S_ZONE_ACTIVE_RESOURCE 6
+
#endif /* _LINUX_VIRTIO_BLK_H */