src/jtag/drivers/usb_blaster/ublast_access.h

   1 /*
   2  *   Driver for USB-JTAG, Altera USB-Blaster and compatibles
   3  *
   4  *   Inspired from original code from Kolja Waschk's USB-JTAG project
   5  *   (http://www.ixo.de/info/usb_jtag/), and from openocd project.
   6  *
   7  *   Copyright (C) 2012 Robert Jarzmik robert.jarzmik@free.fr
   8  *   Copyright (C) 2011 Ali Lown ali@lown.me.uk
   9  *   Copyright (C) 2009 Catalin Patulea cat@vv.carleton.ca
  10  *   Copyright (C) 2006 Kolja Waschk usbjtag@ixo.de
  11  *
  12  *   This program is free software; you can redistribute it and/or modify
  13  *   it under the terms of the GNU General Public License as published by
  14  *   the Free Software Foundation; either version 2 of the License, or
  15  *   (at your option) any later version.
  16  *
  17  *   This program is distributed in the hope that it will be useful,
  18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *   GNU General Public License for more details.
  21  *
  22  */
  23
  24 struct ublast_lowlevel {
  25         uint16_t ublast_vid;
  26         uint16_t ublast_pid;
  27         char *ublast_device_desc;
  28
  29         int (*write)(struct ublast_lowlevel *low, uint8_t *buf, int size,
  30                      uint32_t *bytes_written);
  31         int (*read)(struct ublast_lowlevel *low, uint8_t *buf, unsigned size,
  32                     uint32_t *bytes_read);
  33         int (*open)(struct ublast_lowlevel *low);
  34         int (*close)(struct ublast_lowlevel *low);
  35         int (*speed)(struct ublast_lowlevel *low, int speed);
  36
  37         void *priv;
  38 };
  39
  40 /**
  41  * ublast_register_ftdi - get a lowlevel USB Blaster driver
  42  * ublast_register_ftd2xx - get a lowlevel USB Blaster driver
  43  *
  44  * Get a lowlevel USB-Blaster driver. In the current implementation, there are 2
  45  * possible lowlevel drivers :
  46  *  - one based on libftdi from ftdichip.com
  47  *  - one based on libftdxx, the free alternative
  48  *
  49  * Returns the lowlevel driver structure.
  50  */
  51 extern struct ublast_lowlevel *ublast_register_ftdi(void);
  52 extern struct ublast_lowlevel *ublast_register_ftd2xx(void);