1 files changed, 89 insertions, 0 deletions
diff --git a/samsung-ipc/device/xmm6260/io_helpers.c b/samsung-ipc/device/xmm6260/io_helpers.c
new file mode 100644
index 0000000..9ecdb43
--- /dev/null
+++ b/samsung-ipc/device/xmm6260/io_helpers.c
@@ -0,0 +1,89 @@
+/*
+ * io_helpers.c - I/O helper functions for the firmware loader
+ * This file is part of:
+ *
+ * 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/>.
+ */
+
+#include "io_helpers.h"
+#include "log.h"
+
+#define DEFAULT_TIMEOUT 50
+
+int c_ioctl(int fd, unsigned long code, void* data) {
+	int ret;
+
+	if (!data) {
+		ret = ioctl(fd, code);
+	}
+	else {
+		ret = ioctl(fd, code, data);
+	}
+
+	if (ret < 0) {
+		_e("ioctl fd=%d code=%lx failed: %s", fd, code, strerror(errno));
+	}
+	else {
+		_d("ioctl fd=%d code=%lx OK", fd, code);
+	}
+
+	return ret;
+}
+
+int read_select(int fd, unsigned timeout) {
+	struct timeval tv = {
+		tv.tv_sec = timeout / 1000,
+		tv.tv_usec = 1000 * (timeout % 1000),
+	};
+
+	fd_set read_set;
+	FD_ZERO(&read_set);
+	FD_SET(fd, &read_set);
+
+	return select(fd + 1, &read_set, 0, 0, &tv);
+}
+
+int receive(int fd, void *buf, size_t size) {
+	int ret;
+	if ((ret = read_select(fd, DEFAULT_TIMEOUT)) < 1) {
+		_e("%s: failed to select the fd %d", __func__, fd);
+		return ret;
+	}
+	else {
+		_d("%s: selected %d fds for fd=%d", __func__, ret, fd);
+	}
+
+	return read(fd, buf, size);
+}
+
+int expect_data(int fd, void *data, size_t size) {
+	int ret;
+	char buf[size];
+	if ((ret = receive(fd, buf, size)) != size) {
+		ret = -1;
+		_e("failed to receive data");
+		return ret;
+	}
+	ret = memcmp(buf, data, size);
+	hexdump(buf, size);
+
+	return ret;
+}
+