145 lines
3.7 KiB
C
145 lines
3.7 KiB
C
/*
|
|
* This file is part of the libsigrok project.
|
|
*
|
|
* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
|
|
*
|
|
* 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 3 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*
|
|
* Helper functions for the Cypress EZ-USB / FX2 series chips.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <libusb.h>
|
|
#include <glib.h>
|
|
#include <glib/gstdio.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <libsigrok/libsigrok.h>
|
|
#include "libsigrok-internal.h"
|
|
|
|
#define LOG_PREFIX "ezusb"
|
|
|
|
#define FW_CHUNKSIZE (4 * 1024)
|
|
|
|
SR_PRIV int ezusb_reset(struct libusb_device_handle *hdl, int set_clear)
|
|
{
|
|
int ret;
|
|
unsigned char buf[1];
|
|
|
|
sr_info("setting CPU reset mode %s...",
|
|
set_clear ? "on" : "off");
|
|
buf[0] = set_clear ? 1 : 0;
|
|
ret = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR, 0xa0,
|
|
0xe600, 0x0000, buf, 1, 100);
|
|
if (ret < 0)
|
|
sr_err("Unable to send control request: %s.",
|
|
libusb_error_name(ret));
|
|
|
|
return ret;
|
|
}
|
|
|
|
SR_PRIV int ezusb_install_firmware(struct sr_context *ctx,
|
|
libusb_device_handle *hdl,
|
|
const char *name)
|
|
{
|
|
unsigned char *firmware;
|
|
size_t length, offset, chunksize;
|
|
int ret, result;
|
|
|
|
/* Max size is 64 kiB since the value field of the setup packet,
|
|
* which holds the firmware offset, is only 16 bit wide.
|
|
*/
|
|
firmware = sr_resource_load(ctx, SR_RESOURCE_FIRMWARE,
|
|
name, &length, 1 << 16);
|
|
if (!firmware)
|
|
return SR_ERR;
|
|
|
|
sr_info("Uploading firmware '%s'.", name);
|
|
|
|
result = SR_OK;
|
|
offset = 0;
|
|
while (offset < length) {
|
|
chunksize = MIN(length - offset, FW_CHUNKSIZE);
|
|
|
|
ret = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR |
|
|
LIBUSB_ENDPOINT_OUT, 0xa0, offset,
|
|
0x0000, firmware + offset,
|
|
chunksize, 100);
|
|
if (ret < 0) {
|
|
sr_err("Unable to send firmware to device: %s.",
|
|
libusb_error_name(ret));
|
|
g_free(firmware);
|
|
return SR_ERR;
|
|
}
|
|
sr_info("Uploaded %zu bytes.", chunksize);
|
|
offset += chunksize;
|
|
}
|
|
g_free(firmware);
|
|
|
|
sr_info("Firmware upload done.");
|
|
|
|
return result;
|
|
}
|
|
|
|
SR_PRIV int ezusb_upload_firmware(struct sr_context *ctx, libusb_device *dev,
|
|
int configuration, const char *name)
|
|
{
|
|
struct libusb_device_handle *hdl;
|
|
int ret;
|
|
|
|
sr_info("uploading firmware to device on %d.%d",
|
|
libusb_get_bus_number(dev), libusb_get_device_address(dev));
|
|
|
|
if ((ret = libusb_open(dev, &hdl)) < 0) {
|
|
sr_err("failed to open device: %s.", libusb_error_name(ret));
|
|
return SR_ERR;
|
|
}
|
|
|
|
/*
|
|
* The libusb Darwin backend is broken: it can report a kernel driver being
|
|
* active, but detaching it always returns an error.
|
|
*/
|
|
#if !defined(__APPLE__)
|
|
if (libusb_kernel_driver_active(hdl, 0) == 1) {
|
|
if ((ret = libusb_detach_kernel_driver(hdl, 0)) < 0) {
|
|
sr_err("failed to detach kernel driver: %s",
|
|
libusb_error_name(ret));
|
|
return SR_ERR;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if ((ret = libusb_set_configuration(hdl, configuration)) < 0) {
|
|
sr_err("Unable to set configuration: %s",
|
|
libusb_error_name(ret));
|
|
return SR_ERR;
|
|
}
|
|
|
|
if ((ezusb_reset(hdl, 1)) < 0)
|
|
return SR_ERR;
|
|
|
|
if (ezusb_install_firmware(ctx, hdl, name) < 0)
|
|
return SR_ERR;
|
|
|
|
if ((ezusb_reset(hdl, 0)) < 0)
|
|
return SR_ERR;
|
|
|
|
libusb_close(hdl);
|
|
|
|
return SR_OK;
|
|
}
|