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   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  *   You should have received a copy of the GNU General Public License
  23  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  *
  25  */
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include <config.h>
  29 #endif
  30 #include <jtag/interface.h>
  31 #include <jtag/commands.h>
  32
  33 #include "ublast_access.h"
  34
  35 #include <ftd2xx.h>
  36 #include "jtag/drivers/ftd2xx_common.h"
  37
  38 static FT_HANDLE *ublast_getftdih(struct ublast_lowlevel *low)
  39 {
  40         return low->priv;
  41 }
  42
  43 static int ublast_ftd2xx_write(struct ublast_lowlevel *low, uint8_t *buf, int size,
  44                               uint32_t *bytes_written)
  45 {
  46         FT_STATUS status;
  47         DWORD dw_bytes_written;
  48         FT_HANDLE *ftdih = ublast_getftdih(low);
  49
  50         status = FT_Write(*ftdih, buf, size, &dw_bytes_written);
  51         if (status != FT_OK) {
  52                 *bytes_written = dw_bytes_written;
  53                 LOG_ERROR("FT_Write returned: %s", ftd2xx_status_string(status));
  54                 return ERROR_JTAG_DEVICE_ERROR;
  55         }
  56         *bytes_written = dw_bytes_written;
  57         return ERROR_OK;
  58 }
  59
  60 static int ublast_ftd2xx_read(struct ublast_lowlevel *low, uint8_t *buf,
  61                              unsigned size, uint32_t *bytes_read)
  62 {
  63         DWORD dw_bytes_read;
  64         FT_STATUS status;
  65         FT_HANDLE *ftdih = ublast_getftdih(low);
  66
  67         status = FT_Read(*ftdih, buf, size, &dw_bytes_read);
  68         if (status != FT_OK) {
  69                 *bytes_read = dw_bytes_read;
  70                 LOG_ERROR("FT_Read returned: %s", ftd2xx_status_string(status));
  71                 return ERROR_JTAG_DEVICE_ERROR;
  72         }
  73         *bytes_read = dw_bytes_read;
  74         return ERROR_OK;
  75 }
  76
  77 static int ublast_ftd2xx_init(struct ublast_lowlevel *low)
  78 {
  79         FT_STATUS status;
  80         FT_HANDLE *ftdih = ublast_getftdih(low);
  81         uint8_t latency_timer;
  82
  83         LOG_INFO("usb blaster interface using FTD2XX");
  84         /* Open by device description */
  85         if (low->ublast_device_desc == NULL) {
  86                 LOG_WARNING("no usb blaster device description specified, "
  87                             "using default 'USB-Blaster'");
  88                 low->ublast_device_desc = "USB-Blaster";
  89         }
  90
  91 #if IS_WIN32 == 0
  92         /* Add non-standard Vid/Pid to the linux driver */
  93         status = FT_SetVIDPID(low->ublast_vid, low->ublast_pid);
  94         if (status != FT_OK) {
  95                 LOG_WARNING("couldn't add %4.4x:%4.4x",
  96                             low->ublast_vid, low->ublast_pid);
  97         }
  98 #endif
  99         status = FT_OpenEx(low->ublast_device_desc, FT_OPEN_BY_DESCRIPTION,
 100                            ftdih);
 101         if (status != FT_OK) {
 102                 DWORD num_devices;
 103
 104                 LOG_ERROR("unable to open ftdi device: %s",
 105                           ftd2xx_status_string(status));
 106                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
 107                 if (status == FT_OK) {
 108                         char **desc_array =
 109                                 malloc(sizeof(char *) * (num_devices + 1));
 110                         unsigned int i;
 111
 112                         for (i = 0; i < num_devices; i++)
 113                                 desc_array[i] = malloc(64);
 114                         desc_array[num_devices] = NULL;
 115
 116                         status = FT_ListDevices(desc_array, &num_devices,
 117                                                 FT_LIST_ALL | FT_OPEN_BY_DESCRIPTION);
 118
 119                         if (status == FT_OK) {
 120                                 LOG_ERROR("ListDevices: %" PRIu32, (uint32_t)num_devices);
 121                                 for (i = 0; i < num_devices; i++)
 122                                         LOG_ERROR("%i: %s", i, desc_array[i]);
 123                         }
 124
 125                         for (i = 0; i < num_devices; i++)
 126                                 free(desc_array[i]);
 127                         free(desc_array);
 128                 } else {
 129                         printf("ListDevices: NONE\n");
 130                 }
 131                 return ERROR_JTAG_INIT_FAILED;
 132         }
 133
 134         status = FT_SetLatencyTimer(*ftdih, 2);
 135         if (status != FT_OK) {
 136                 LOG_ERROR("unable to set latency timer: %s",
 137                                 ftd2xx_status_string(status));
 138                 return ERROR_JTAG_INIT_FAILED;
 139         }
 140
 141         status = FT_GetLatencyTimer(*ftdih, &latency_timer);
 142         if (status != FT_OK)
 143                 LOG_ERROR("unable to get latency timer: %s",
 144                                 ftd2xx_status_string(status));
 145         else
 146                 LOG_DEBUG("current latency timer: %i", latency_timer);
 147
 148         status = FT_SetBitMode(*ftdih, 0x00, 0);
 149         if (status != FT_OK) {
 150                 LOG_ERROR("unable to disable bit i/o mode: %s",
 151                                 ftd2xx_status_string(status));
 152                 return ERROR_JTAG_INIT_FAILED;
 153         }
 154         return ERROR_OK;
 155 }
 156
 157 static int ublast_ftd2xx_quit(struct ublast_lowlevel *low)
 158 {
 159         FT_HANDLE *ftdih = ublast_getftdih(low);
 160
 161         FT_Close(*ftdih);
 162         return ERROR_OK;
 163 }
 164
 165 static struct ublast_lowlevel_priv {
 166         FT_HANDLE ftdih;
 167 } info;
 168
 169 static struct ublast_lowlevel low = {
 170         .open = ublast_ftd2xx_init,
 171         .close = ublast_ftd2xx_quit,
 172         .read = ublast_ftd2xx_read,
 173         .write = ublast_ftd2xx_write,
 174         .priv = &info,
 175 };
 176
 177 struct ublast_lowlevel *ublast_register_ftd2xx(void)
 178 {
 179         return &low;
 180 }