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/*
* DFU transfer routines
*
* This is supposed to be a general DFU implementation, as specified in the
* USB DFU 1.0 and 1.1 specification.
*
* The code was originally intended to interface with a USB device running the
* "sam7dfu" firmware (see http://www.openpcd.org/) on an AT91SAM7 processor.
*
* Copyright 2007-2008 Harald Welte <laforge@gnumonks.org>
* Copyright 2013 Hans Petter Selasky <hps@bitfrost.no>
* Copyright 2014-2016 Tormod Volden <debian.tormod@gmail.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 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define __USE_MINGW_ANSI_STDIO 1
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <libusb.h>
#include "portable.h"
#include "dfu.h"
#include "usb_dfu.h"
#include "dfu_file.h"
#include "dfu_load.h"
#include "quirks.h"
int dfuload_do_upload(dfu_if *dif, int xfer_size,
int expected_size, int fd)
{
off_t total_bytes = 0;
unsigned short transaction = 0;
unsigned char *buf;
int ret;
buf = dfu_malloc(xfer_size);
printf("Copying data from DFU device to PC\n");
while (1) {
int rc;
dfu_progress_bar("Upload", total_bytes, expected_size);
rc = dfu_upload(dif->dev_handle, dif->intf,
xfer_size, transaction++, buf);
if (rc < 0) {
warnx("\nError during upload (%s)",
libusb_error_name(rc));
ret = rc;
break;
}
dfu_file_write_crc(fd, 0, buf, rc);
total_bytes += rc;
if (total_bytes < 0)
errx(EX_SOFTWARE, "\nReceived too many bytes (wraparound)");
if (rc < xfer_size) {
/* last block, return */
ret = 0;
break;
}
}
free(buf);
if (ret == 0) {
dfu_progress_bar("Upload", total_bytes, total_bytes);
} else {
dfu_progress_bar("Upload", total_bytes, expected_size);
printf("\n");
}
if (total_bytes == 0)
printf("\nFailed.\n");
else
printf("Received a total of %lli bytes\n", (long long) total_bytes);
if (expected_size != 0 && total_bytes != expected_size)
warnx("Unexpected number of bytes uploaded from device");
return ret;
}
off_t dfuload_do_dnload(dfu_if *dif, int xfer_size, dfu_file *file, int *percent)
{
off_t bytes_sent;
off_t expected_size;
unsigned char *buf;
unsigned short transaction = 0;
dfu_status dst;
int ret;
buf = file->firmware;
expected_size = file->size.total - file->size.suffix;
bytes_sent = 0;
*percent = 0;
while (bytes_sent < expected_size) {
off_t bytes_left;
int chunk_size;
bytes_left = expected_size - bytes_sent;
if (bytes_left < xfer_size)
chunk_size = (int) bytes_left;
else
chunk_size = xfer_size;
ret = dfu_download(dif->dev_handle, dif->intf,
chunk_size, transaction++, chunk_size ? buf : NULL);
if (ret < 0) {
warnx("Error during download (%s)",
libusb_error_name(ret));
goto out;
}
bytes_sent += chunk_size;
buf += chunk_size;
do {
ret = dfu_get_status(dif, &dst);
if (ret < 0) {
errx(EX_IOERR, "Error during download get_status (%s)",
libusb_error_name(ret));
goto out;
}
if (dst.bState == DFU_STATE_dfuDNLOAD_IDLE ||
dst.bState == DFU_STATE_dfuERROR)
break;
/* Wait while device executes flashing */
milli_sleep(dst.bwPollTimeout);
if (verbose > 1)
fprintf(stderr, "Poll timeout %i ms\n", dst.bwPollTimeout);
} while (1);
if (dst.bStatus != DFU_STATUS_OK) {
ret = -1;
goto out;
}
*percent = bytes_sent * 100 / (bytes_sent + bytes_left);
}
/* send one zero sized download request to signalize end */
ret = dfu_download(dif->dev_handle, dif->intf,
0, transaction, NULL);
if (ret < 0) {
errx(EX_IOERR, "Error sending completion packet (%s)",
libusb_error_name(ret));
goto out;
}
*percent = 100;
get_status:
/* Transition to MANIFEST_SYNC state */
ret = dfu_get_status(dif, &dst);
if (ret < 0) {
warnx("unable to read DFU status after completion (%s)",
libusb_error_name(ret));
goto out;
}
milli_sleep(dst.bwPollTimeout);
/* FIXME: deal correctly with ManifestationTolerant=0 / WillDetach bits */
switch (dst.bState) {
case DFU_STATE_dfuMANIFEST_SYNC:
case DFU_STATE_dfuMANIFEST:
/* some devices (e.g. TAS1020b) need some time before we
* can obtain the status */
milli_sleep(1000);
goto get_status;
break;
case DFU_STATE_dfuMANIFEST_WAIT_RST:
ret = libusb_reset_device(dif->dev_handle);
if (ret < 0 && ret != LIBUSB_ERROR_NOT_FOUND) {
fprintf(stderr, "error resetting after download (%s)\n",
libusb_error_name(ret));
}
break;
case DFU_STATE_dfuIDLE:
break;
}
out:
return bytes_sent;
}
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