usb/image/microtek.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002  /*
0003  * Driver for Microtek Scanmaker X6 USB scanner and possibly others.
0004  *
0005  * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com>
0006  * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
0007  *
0008  * See microtek.c for history
0009  *
0010  */
0011
0012 typedef void (*mts_scsi_cmnd_callback)(struct scsi_cmnd *);
0013
0014
0015 struct mts_transfer_context
0016 {
0017     struct mts_desc *instance;
0018     mts_scsi_cmnd_callback final_callback;
0019     struct scsi_cmnd *srb;
0020
0021     void *data;
0022     unsigned data_length;
0023     int data_pipe;
0024     struct scatterlist *curr_sg;
0025
0026     u8 *scsi_status; /* status returned from ep_response after command completion */
0027 };
0028
0029
0030 struct mts_desc {
0031     struct mts_desc *next;
0032     struct mts_desc *prev;
0033
0034     struct usb_device *usb_dev;
0035     struct usb_interface *usb_intf;
0036
0037     /* Endpoint addresses */
0038     u8 ep_out;
0039     u8 ep_response;
0040     u8 ep_image;
0041
0042     struct Scsi_Host *host;
0043
0044     struct urb *urb;
0045     struct mts_transfer_context context;
0046 };
0047
0048
0049 #define MTS_EP_OUT  0x1
0050 #define MTS_EP_RESPONSE 0x2
0051 #define MTS_EP_IMAGE    0x3
0052 #define MTS_EP_TOTAL    0x3
0053
0054 #define MTS_SCSI_ERR_MASK ~0x3fu
0055