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authorMichael S. Tsirkin <mst@redhat.com>2014-11-23 17:45:53 +0200
committerMichael S. Tsirkin <mst@redhat.com>2014-12-09 12:05:31 +0200
commit106d81f58a5e7f41e857b8805e9d899e87d7a874 (patch)
tree32441d7f87a306060c2561cc0e99e7a7e1787362 /include/uapi/linux/virtio_scsi.h
parentd75dff39dfb86b0b8925f10b1f13fc353ae9f1b0 (diff)
virtio_scsi: move to uapi
Guests need to use virtio scsi API, so export it to uapi, nice to e.g. qemu and will help us remember this file affects ABI. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/uapi/linux/virtio_scsi.h')
-rw-r--r--include/uapi/linux/virtio_scsi.h164
1 files changed, 164 insertions, 0 deletions
diff --git a/include/uapi/linux/virtio_scsi.h b/include/uapi/linux/virtio_scsi.h
new file mode 100644
index 000000000000..af448649a975
--- /dev/null
+++ b/include/uapi/linux/virtio_scsi.h
@@ -0,0 +1,164 @@
+/*
+ * This header is BSD licensed so anyone can use the definitions to implement
+ * compatible drivers/servers.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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.
+ */
+
+#ifndef _LINUX_VIRTIO_SCSI_H
+#define _LINUX_VIRTIO_SCSI_H
+
+#include <linux/virtio_types.h>
+
+#define VIRTIO_SCSI_CDB_SIZE 32
+#define VIRTIO_SCSI_SENSE_SIZE 96
+
+/* SCSI command request, followed by data-out */
+struct virtio_scsi_cmd_req {
+ u8 lun[8]; /* Logical Unit Number */
+ __virtio64 tag; /* Command identifier */
+ u8 task_attr; /* Task attribute */
+ u8 prio; /* SAM command priority field */
+ u8 crn;
+ u8 cdb[VIRTIO_SCSI_CDB_SIZE];
+} __packed;
+
+/* SCSI command request, followed by protection information */
+struct virtio_scsi_cmd_req_pi {
+ u8 lun[8]; /* Logical Unit Number */
+ __virtio64 tag; /* Command identifier */
+ u8 task_attr; /* Task attribute */
+ u8 prio; /* SAM command priority field */
+ u8 crn;
+ __virtio32 pi_bytesout; /* DataOUT PI Number of bytes */
+ __virtio32 pi_bytesin; /* DataIN PI Number of bytes */
+ u8 cdb[VIRTIO_SCSI_CDB_SIZE];
+} __packed;
+
+/* Response, followed by sense data and data-in */
+struct virtio_scsi_cmd_resp {
+ __virtio32 sense_len; /* Sense data length */
+ __virtio32 resid; /* Residual bytes in data buffer */
+ __virtio16 status_qualifier; /* Status qualifier */
+ u8 status; /* Command completion status */
+ u8 response; /* Response values */
+ u8 sense[VIRTIO_SCSI_SENSE_SIZE];
+} __packed;
+
+/* Task Management Request */
+struct virtio_scsi_ctrl_tmf_req {
+ __virtio32 type;
+ __virtio32 subtype;
+ u8 lun[8];
+ __virtio64 tag;
+} __packed;
+
+struct virtio_scsi_ctrl_tmf_resp {
+ u8 response;
+} __packed;
+
+/* Asynchronous notification query/subscription */
+struct virtio_scsi_ctrl_an_req {
+ __virtio32 type;
+ u8 lun[8];
+ __virtio32 event_requested;
+} __packed;
+
+struct virtio_scsi_ctrl_an_resp {
+ __virtio32 event_actual;
+ u8 response;
+} __packed;
+
+struct virtio_scsi_event {
+ __virtio32 event;
+ u8 lun[8];
+ __virtio32 reason;
+} __packed;
+
+struct virtio_scsi_config {
+ u32 num_queues;
+ u32 seg_max;
+ u32 max_sectors;
+ u32 cmd_per_lun;
+ u32 event_info_size;
+ u32 sense_size;
+ u32 cdb_size;
+ u16 max_channel;
+ u16 max_target;
+ u32 max_lun;
+} __packed;
+
+/* Feature Bits */
+#define VIRTIO_SCSI_F_INOUT 0
+#define VIRTIO_SCSI_F_HOTPLUG 1
+#define VIRTIO_SCSI_F_CHANGE 2
+#define VIRTIO_SCSI_F_T10_PI 3
+
+/* Response codes */
+#define VIRTIO_SCSI_S_OK 0
+#define VIRTIO_SCSI_S_OVERRUN 1
+#define VIRTIO_SCSI_S_ABORTED 2
+#define VIRTIO_SCSI_S_BAD_TARGET 3
+#define VIRTIO_SCSI_S_RESET 4
+#define VIRTIO_SCSI_S_BUSY 5
+#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
+#define VIRTIO_SCSI_S_TARGET_FAILURE 7
+#define VIRTIO_SCSI_S_NEXUS_FAILURE 8
+#define VIRTIO_SCSI_S_FAILURE 9
+#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10
+#define VIRTIO_SCSI_S_FUNCTION_REJECTED 11
+#define VIRTIO_SCSI_S_INCORRECT_LUN 12
+
+/* Controlq type codes. */
+#define VIRTIO_SCSI_T_TMF 0
+#define VIRTIO_SCSI_T_AN_QUERY 1
+#define VIRTIO_SCSI_T_AN_SUBSCRIBE 2
+
+/* Valid TMF subtypes. */
+#define VIRTIO_SCSI_T_TMF_ABORT_TASK 0
+#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1
+#define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2
+#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3
+#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4
+#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5
+#define VIRTIO_SCSI_T_TMF_QUERY_TASK 6
+#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7
+
+/* Events. */
+#define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000
+#define VIRTIO_SCSI_T_NO_EVENT 0
+#define VIRTIO_SCSI_T_TRANSPORT_RESET 1
+#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2
+#define VIRTIO_SCSI_T_PARAM_CHANGE 3
+
+/* Reasons of transport reset event */
+#define VIRTIO_SCSI_EVT_RESET_HARD 0
+#define VIRTIO_SCSI_EVT_RESET_RESCAN 1
+#define VIRTIO_SCSI_EVT_RESET_REMOVED 2
+
+#define VIRTIO_SCSI_S_SIMPLE 0
+#define VIRTIO_SCSI_S_ORDERED 1
+#define VIRTIO_SCSI_S_HEAD 2
+#define VIRTIO_SCSI_S_ACA 3
+
+
+#endif /* _LINUX_VIRTIO_SCSI_H */