drivers/usb/image/microtek.h

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