xref: /linux/drivers/usb/image/microtek.h (revision 1194b5ce)
1 /* SPDX-License-Identifier: GPL-2.0 */
2  /*
3  * Driver for Microtek Scanmaker X6 USB scanner and possibly others.
4  *
5  * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com>
6  * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
7  *
8  * See microtek.c for history
9  *
10  */
11 
12 typedef void (*mts_scsi_cmnd_callback)(struct scsi_cmnd *);
13 
14 
15 struct mts_transfer_context
16 {
17 	struct mts_desc *instance;
18 	mts_scsi_cmnd_callback final_callback;
19 	struct scsi_cmnd *srb;
20 
21 	void *data;
22 	unsigned data_length;
23 	int data_pipe;
24 	struct scatterlist *curr_sg;
25 
26 	u8 *scsi_status; /* status returned from ep_response after command completion */
27 };
28 
29 
30 struct mts_desc {
31 	struct mts_desc *next;
32 	struct mts_desc *prev;
33 
34 	struct usb_device *usb_dev;
35 	struct usb_interface *usb_intf;
36 
37 	/* Endpoint addresses */
38 	u8 ep_out;
39 	u8 ep_response;
40 	u8 ep_image;
41 
42 	struct Scsi_Host *host;
43 
44 	struct urb *urb;
45 	struct mts_transfer_context context;
46 };
47 
48 
49 #define MTS_EP_OUT	0x1
50 #define MTS_EP_RESPONSE	0x2
51 #define MTS_EP_IMAGE	0x3
52 #define MTS_EP_TOTAL	0x3
53 
54 #define MTS_SCSI_ERR_MASK ~0x3fu
55 
56