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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2012-01-11 12:45:56 +0100
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2012-02-02 14:51:11 -0800
commit348748b0e8cccc675e2f3a1456460ffcd540e1a1 (patch)
treec326d3076b750d04075b36711a1cebef303c3a9f /include/linux/usb/uas.h
parentc898add51c7b5b99fcecdeaf4df2ca30949cacb6 (diff)
usb/uas: move UAS structs / defines into a header file
The protocol specific structures and defines which are used by UAS are moved into a header files by this patch so it can be accessed by the UAS gadget as well. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'include/linux/usb/uas.h')
-rw-r--r--include/linux/usb/uas.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/include/linux/usb/uas.h b/include/linux/usb/uas.h
new file mode 100644
index 000000000000..856be7fcbbd8
--- /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