76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/* See the end of this file for copyright, license, and warranty information. */
|
|
|
|
#include <ardix/atomic.h>
|
|
#include <ardix/device.h>
|
|
#include <ardix/ringbuf.h>
|
|
#include <ardix/sched.h>
|
|
#include <ardix/serial.h>
|
|
|
|
#include <arch/serial.h>
|
|
|
|
#include <stddef.h>
|
|
|
|
int serial_init(struct serial_device *dev, long int baud)
|
|
{
|
|
int err = -1;
|
|
|
|
if (dev->id < 0)
|
|
return -1; /* invalid dev */
|
|
|
|
err = device_init(&dev->device);
|
|
|
|
dev->baud = baud;
|
|
|
|
dev->rx = ringbuf_create(SERIAL_BUFSZ);
|
|
if (dev->rx == NULL)
|
|
return -1;
|
|
|
|
err = arch_serial_init(dev);
|
|
if (err)
|
|
ringbuf_destroy(dev->rx);
|
|
|
|
return err;
|
|
}
|
|
|
|
void serial_exit(struct serial_device *dev)
|
|
{
|
|
arch_serial_exit(dev);
|
|
ringbuf_destroy(dev->rx);
|
|
dev->id = -1;
|
|
}
|
|
|
|
ssize_t serial_read(void *dest, struct serial_device *dev, size_t len)
|
|
{
|
|
ssize_t ret;
|
|
|
|
atomic_enter();
|
|
ret = (ssize_t)ringbuf_read(dest, dev->rx, len);
|
|
atomic_leave();
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t serial_write(struct serial_device *dev, const void *data, size_t len)
|
|
{
|
|
ssize_t ret;
|
|
|
|
atomic_enter();
|
|
ret = arch_serial_write(dev, data, len);
|
|
atomic_leave();
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This file is part of Ardix.
|
|
* Copyright (c) 2020, 2021 Felix Kopp <owo@fef.moe>.
|
|
*
|
|
* Ardix is non-violent software: you may only use, redistribute,
|
|
* and/or modify it under the terms of the CNPLv6+ as found in
|
|
* the LICENSE file in the source code root directory or at
|
|
* <https://git.pixie.town/thufie/CNPL>.
|
|
*
|
|
* Ardix comes with ABSOLUTELY NO WARRANTY, to the extent
|
|
* permitted by applicable law. See the CNPLv6+ for details.
|
|
*/
|