usb/uas: move UAS structs / defines into a header file

[linux-flexiantxendom0.git] / include / linux / usb / uas.h

diff --git a/include/linux/usb/uas.h b/include/linux/usb/uas.h
new file mode 100644 (file)
index 0000000..856be7f
--- /dev/null
+++ b/include/linux/usb/uas.h
@@ -0,0 +1,61 @@
+#ifndef __USB_UAS_H__
+#define __USB_UAS_H__
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+
+/* Common header for all IUs */
+struct iu {
+       __u8 iu_id;
+       __u8 rsvd1;
+       __be16 tag;
+};
+
+enum {
+       IU_ID_COMMAND           = 0x01,
+       IU_ID_STATUS            = 0x03,
+       IU_ID_RESPONSE          = 0x04,
+       IU_ID_TASK_MGMT         = 0x05,
+       IU_ID_READ_READY        = 0x06,
+       IU_ID_WRITE_READY       = 0x07,
+};
+
+struct command_iu {
+       __u8 iu_id;
+       __u8 rsvd1;
+       __be16 tag;
+       __u8 prio_attr;
+       __u8 rsvd5;
+       __u8 len;
+       __u8 rsvd7;
+       struct scsi_lun lun;
+       __u8 cdb[16];   /* XXX: Overflow-checking tools may misunderstand */
+};
+
+/*
+ * Also used for the Read Ready and Write Ready IUs since they have the
+ * same first four bytes
+ */
+struct sense_iu {
+       __u8 iu_id;
+       __u8 rsvd1;
+       __be16 tag;
+       __be16 status_qual;
+       __u8 status;
+       __u8 rsvd7[7];
+       __be16 len;
+       __u8 sense[SCSI_SENSE_BUFFERSIZE];
+};
+
+enum {
+       CMD_PIPE_ID             = 1,
+       STATUS_PIPE_ID          = 2,
+       DATA_IN_PIPE_ID         = 3,
+       DATA_OUT_PIPE_ID        = 4,
+
+       UAS_SIMPLE_TAG          = 0,
+       UAS_HEAD_TAG            = 1,
+       UAS_ORDERED_TAG         = 2,
+       UAS_ACA                 = 4,
+};
+#endif