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/*
* Driver for USB-JTAG, Altera USB-Blaster and compatibles
*
* Inspired from original code from Kolja Waschk's USB-JTAG project
* (http://www.ixo.de/info/usb_jtag/), and from openocd project.
*
* Copyright (C) 2012 Robert Jarzmik robert.jarzmik@free.fr
* Copyright (C) 2011 Ali Lown ali@lown.me.uk
* Copyright (C) 2009 Catalin Patulea cat@vv.carleton.ca
* Copyright (C) 2006 Kolja Waschk usbjtag@ixo.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <jtag/interface.h>
#include <jtag/commands.h>
#include "ublast_access.h"
#include <ftd2xx.h>
#include "jtag/drivers/ftd2xx_common.h"
static FT_HANDLE *ublast_getftdih(struct ublast_lowlevel *low)
{
return low->priv;
}
static int ublast_ftd2xx_write(struct ublast_lowlevel *low, uint8_t *buf, int size,
uint32_t *bytes_written)
{
FT_STATUS status;
DWORD dw_bytes_written;
FT_HANDLE *ftdih = ublast_getftdih(low);
status = FT_Write(*ftdih, buf, size, &dw_bytes_written);
if (status != FT_OK) {
*bytes_written = dw_bytes_written;
LOG_ERROR("FT_Write returned: %s", ftd2xx_status_string(status));
return ERROR_JTAG_DEVICE_ERROR;
}
*bytes_written = dw_bytes_written;
return ERROR_OK;
}
static int ublast_ftd2xx_read(struct ublast_lowlevel *low, uint8_t *buf,
unsigned size, uint32_t *bytes_read)
{
DWORD dw_bytes_read;
FT_STATUS status;
FT_HANDLE *ftdih = ublast_getftdih(low);
status = FT_Read(*ftdih, buf, size, &dw_bytes_read);
if (status != FT_OK) {
*bytes_read = dw_bytes_read;
LOG_ERROR("FT_Read returned: %s", ftd2xx_status_string(status));
return ERROR_JTAG_DEVICE_ERROR;
}
*bytes_read = dw_bytes_read;
return ERROR_OK;
}
static int ublast_ftd2xx_init(struct ublast_lowlevel *low)
{
FT_STATUS status;
FT_HANDLE *ftdih = ublast_getftdih(low);
uint8_t latency_timer;
LOG_INFO("usb blaster interface using FTD2XX");
/* Open by device description */
if (low->ublast_device_desc == NULL) {
LOG_WARNING("no usb blaster device description specified, "
"using default 'USB-Blaster'");
low->ublast_device_desc = "USB-Blaster";
}
#if IS_WIN32 == 0
/* Add non-standard Vid/Pid to the linux driver */
status = FT_SetVIDPID(low->ublast_vid, low->ublast_pid);
if (status != FT_OK) {
LOG_WARNING("couldn't add %4.4x:%4.4x",
low->ublast_vid, low->ublast_pid);
}
#endif
status = FT_OpenEx(low->ublast_device_desc, FT_OPEN_BY_DESCRIPTION,
ftdih);
if (status != FT_OK) {
DWORD num_devices;
LOG_ERROR("unable to open ftdi device: %s",
ftd2xx_status_string(status));
status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
if (status == FT_OK) {
char **desc_array =
malloc(sizeof(char *) * (num_devices + 1));
unsigned int i;
for (i = 0; i < num_devices; i++)
desc_array[i] = malloc(64);
desc_array[num_devices] = NULL;
status = FT_ListDevices(desc_array, &num_devices,
FT_LIST_ALL | FT_OPEN_BY_DESCRIPTION);
if (status == FT_OK) {
LOG_ERROR("ListDevices: %" PRIu32, (uint32_t)num_devices);
for (i = 0; i < num_devices; i++)
LOG_ERROR("%i: %s", i, desc_array[i]);
}
for (i = 0; i < num_devices; i++)
free(desc_array[i]);
free(desc_array);
} else {
printf("ListDevices: NONE\n");
}
return ERROR_JTAG_INIT_FAILED;
}
status = FT_SetLatencyTimer(*ftdih, 2);
if (status != FT_OK) {
LOG_ERROR("unable to set latency timer: %s",
ftd2xx_status_string(status));
return ERROR_JTAG_INIT_FAILED;
}
status = FT_GetLatencyTimer(*ftdih, &latency_timer);
if (status != FT_OK)
LOG_ERROR("unable to get latency timer: %s",
ftd2xx_status_string(status));
else
LOG_DEBUG("current latency timer: %i", latency_timer);
status = FT_SetBitMode(*ftdih, 0x00, 0);
if (status != FT_OK) {
LOG_ERROR("unable to disable bit i/o mode: %s",
ftd2xx_status_string(status));
return ERROR_JTAG_INIT_FAILED;
}
return ERROR_OK;
}
static int ublast_ftd2xx_quit(struct ublast_lowlevel *low)
{
FT_HANDLE *ftdih = ublast_getftdih(low);
FT_Close(*ftdih);
return ERROR_OK;
}
static struct ublast_lowlevel_priv {
FT_HANDLE ftdih;
} info;
static struct ublast_lowlevel low = {
.open = ublast_ftd2xx_init,
.close = ublast_ftd2xx_quit,
.read = ublast_ftd2xx_read,
.write = ublast_ftd2xx_write,
.priv = &info,
};
struct ublast_lowlevel *ublast_register_ftd2xx(void)
{
return &low;
}
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