uas: task mgmt & error handling
Add task management support, wind up in abort and device reset error
handlers. Cancel all in-flight urbs in bus reset handler.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/usb/uas.h b/include/linux/usb/uas.h
index 9a988e4..5499ab5 100644
--- a/include/linux/usb/uas.h
+++ b/include/linux/usb/uas.h
@@ -20,6 +20,28 @@
IU_ID_WRITE_READY = 0x07,
};
+enum {
+ TMF_ABORT_TASK = 0x01,
+ TMF_ABORT_TASK_SET = 0x02,
+ TMF_CLEAR_TASK_SET = 0x04,
+ TMF_LOGICAL_UNIT_RESET = 0x08,
+ TMF_I_T_NEXUS_RESET = 0x10,
+ TMF_CLEAR_ACA = 0x40,
+ TMF_QUERY_TASK = 0x80,
+ TMF_QUERY_TASK_SET = 0x81,
+ TMF_QUERY_ASYNC_EVENT = 0x82,
+};
+
+enum {
+ RC_TMF_COMPLETE = 0x00,
+ RC_INVALID_INFO_UNIT = 0x02,
+ RC_TMF_NOT_SUPPORTED = 0x04,
+ RC_TMF_FAILED = 0x05,
+ RC_TMF_SUCCEEDED = 0x08,
+ RC_INCORRECT_LUN = 0x09,
+ RC_OVERLAPPED_TAG = 0x0a,
+};
+
struct command_iu {
__u8 iu_id;
__u8 rsvd1;
@@ -32,6 +54,16 @@
__u8 cdb[16]; /* XXX: Overflow-checking tools may misunderstand */
};
+struct task_mgmt_iu {
+ __u8 iu_id;
+ __u8 rsvd1;
+ __be16 tag;
+ __u8 function;
+ __u8 rsvd2;
+ __be16 task_tag;
+ struct scsi_lun lun;
+};
+
/*
* Also used for the Read Ready and Write Ready IUs since they have the
* same first four bytes
@@ -47,6 +79,14 @@
__u8 sense[SCSI_SENSE_BUFFERSIZE];
};
+struct response_ui {
+ __u8 iu_id;
+ __u8 rsvd1;
+ __be16 tag;
+ __be16 add_response_info;
+ __u8 response_code;
+};
+
struct usb_pipe_usage_descriptor {
__u8 bLength;
__u8 bDescriptorType;