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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 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
*/
#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(struct dfu_if *dif, int xfer_size,
int expected_size, int fd)
{
int 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");
dfu_progress_bar("Upload", 0, 1);
while (1) {
int rc;
rc = dfu_upload(dif->dev_handle, dif->interface,
xfer_size, transaction++, buf);
if (rc < 0) {
warnx("Error during upload");
ret = rc;
goto out_free;
}
dfu_file_write_crc(fd, 0, buf, rc);
total_bytes += rc;
if (total_bytes < 0)
errx(EX_SOFTWARE, "Received too many bytes (wraparound)");
if (rc < xfer_size) {
/* last block, return */
ret = total_bytes;
break;
}
dfu_progress_bar("Upload", total_bytes, expected_size);
}
ret = 0;
out_free:
dfu_progress_bar("Upload", total_bytes, total_bytes);
if (total_bytes == 0)
printf("\nFailed.\n");
free(buf);
if (verbose)
printf("Received a total of %i bytes\n", total_bytes);
if (expected_size != 0 && total_bytes != expected_size)
errx(EX_SOFTWARE, "Unexpected number of bytes uploaded from device");
return ret;
}
int dfuload_do_dnload(struct dfu_if *dif, int xfer_size, struct dfu_file *file)
{
int bytes_sent;
int expected_size;
unsigned char *buf;
unsigned short transaction = 0;
struct dfu_status dst;
int ret;
printf("Copying data from PC to DFU device\n");
buf = file->firmware;
expected_size = file->size.total - file->size.suffix;
bytes_sent = 0;
dfu_progress_bar("Download", 0, 1);
while (bytes_sent < expected_size) {
int bytes_left;
int chunk_size;
bytes_left = expected_size - bytes_sent;
if (bytes_left < xfer_size)
chunk_size = bytes_left;
else
chunk_size = xfer_size;
ret = dfu_download(dif->dev_handle, dif->interface,
chunk_size, transaction++, chunk_size ? buf : NULL);
if (ret < 0) {
warnx("Error during download");
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");
goto out;
}
if (dst.bState == DFU_STATE_dfuDNLOAD_IDLE ||
dst.bState == DFU_STATE_dfuERROR)
break;
/* Wait while device executes flashing */
milli_sleep(dst.bwPollTimeout);
} while (1);
if (dst.bStatus != DFU_STATUS_OK) {
printf(" failed!\n");
printf("state(%u) = %s, status(%u) = %s\n", dst.bState,
dfu_state_to_string(dst.bState), dst.bStatus,
dfu_status_to_string(dst.bStatus));
ret = -1;
goto out;
}
dfu_progress_bar("Download", bytes_sent, bytes_sent + bytes_left);
}
/* send one zero sized download request to signalize end */
ret = dfu_download(dif->dev_handle, dif->interface,
0, transaction, NULL);
if (ret < 0) {
errx(EX_IOERR, "Error sending completion packet");
goto out;
}
dfu_progress_bar("Download", bytes_sent, bytes_sent);
if (verbose)
printf("Sent a total of %i bytes\n", bytes_sent);
get_status:
/* Transition to MANIFEST_SYNC state */
ret = dfu_get_status(dif, &dst);
if (ret < 0) {
warnx("unable to read DFU status after completion");
goto out;
}
printf("state(%u) = %s, status(%u) = %s\n", dst.bState,
dfu_state_to_string(dst.bState), dst.bStatus,
dfu_status_to_string(dst.bStatus));
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_dfuIDLE:
break;
}
printf("Done!\n");
out:
return bytes_sent;
}
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