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/*
* Firmware loader for Samsung I9100 and I9250
* Copyright (C) 2012 Alexander Tarasikov <alexander.tarasikov@gmail.com>
*
* based on the incomplete C++ implementation which is
* Copyright (C) 2012 Sergey Gridasov <grindars@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 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/>.
*/
//modemctl shared code
#include "modemctl_common.h"
/*
* modemctl generic functions
*/
int modemctl_link_set_active(fwloader_context *ctx, bool enabled) {
unsigned status = enabled;
int ret;
unsigned long ioctl_code;
ioctl_code = IOCTL_LINK_CONTROL_ACTIVE;
ret = c_ioctl(ctx->link_fd, ioctl_code, &status);
if (ret < 0) {
_d("failed to set link active to %d", enabled);
goto fail;
}
return 0;
fail:
return ret;
}
int modemctl_link_set_enabled(fwloader_context *ctx, bool enabled) {
unsigned status = enabled;
int ret;
unsigned long ioctl_code;
ioctl_code = IOCTL_LINK_CONTROL_ENABLE;
ret = c_ioctl(ctx->link_fd, ioctl_code, &status);
if (ret < 0) {
_d("failed to set link state to %d", enabled);
goto fail;
}
return 0;
fail:
return ret;
}
int modemctl_wait_link_ready(fwloader_context *ctx) {
int ret;
struct timeval tv_start = {};
struct timeval tv_end = {};
gettimeofday(&tv_start, 0);;
//link wakeup timeout in milliseconds
long diff = 0;
do {
ret = c_ioctl(ctx->link_fd, IOCTL_LINK_CONNECTED, 0);
if (ret < 0) {
goto fail;
}
if (ret == 1) {
return 0;
}
usleep(LINK_POLL_DELAY_US);
gettimeofday(&tv_end, 0);;
diff = (tv_end.tv_sec - tv_start.tv_sec) * 1000;
diff += (tv_end.tv_usec - tv_start.tv_usec) / 1000;
} while (diff < LINK_TIMEOUT_MS);
ret = -ETIMEDOUT;
fail:
return ret;
}
int modemctl_wait_modem_online(fwloader_context *ctx) {
int ret;
struct timeval tv_start = {};
struct timeval tv_end = {};
gettimeofday(&tv_start, 0);;
//link wakeup timeout in milliseconds
long diff = 0;
do {
ret = c_ioctl(ctx->boot_fd, IOCTL_MODEM_STATUS, 0);
if (ret < 0) {
goto fail;
}
if (ret == STATE_ONLINE) {
return 0;
}
usleep(LINK_POLL_DELAY_US);
gettimeofday(&tv_end, 0);;
diff = (tv_end.tv_sec - tv_start.tv_sec) * 1000;
diff += (tv_end.tv_usec - tv_start.tv_usec) / 1000;
} while (diff < LINK_TIMEOUT_MS);
ret = -ETIMEDOUT;
fail:
return ret;
}
int modemctl_modem_power(fwloader_context *ctx, bool enabled) {
if (enabled) {
return c_ioctl(ctx->boot_fd, IOCTL_MODEM_ON, 0);
}
else {
return c_ioctl(ctx->boot_fd, IOCTL_MODEM_OFF, 0);
}
return -1;
}
int modemctl_modem_boot_power(fwloader_context *ctx, bool enabled) {
if (enabled) {
return c_ioctl(ctx->boot_fd, IOCTL_MODEM_BOOT_ON, 0);
}
else {
return c_ioctl(ctx->boot_fd, IOCTL_MODEM_BOOT_OFF, 0);
}
return -1;
}
unsigned char calculateCRC(void* data, size_t offset, size_t length)
{
unsigned char crc = 0;
unsigned char *ptr = (unsigned char*)(data + offset);
while (length--) {
crc ^= *ptr++;
}
return crc;
}
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