/*
* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/rtems-bsd-kernel-space.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <rtems/seterr.h>
#include <assert.h>
#include "test_cdev01.h"
static d_open_t testopen;
static d_close_t testclose;
static d_read_t testread;
static d_write_t testwrite;
static d_ioctl_t testioctl;
static d_poll_t testpoll;
static d_kqfilter_t testkqfilter;
static struct cdevsw test_cdevsw = {
.d_version = D_VERSION,
.d_flags = 0,
/* FIXME: check for D_PSEUDO | D_NEEDMINOR | D_NEEDGIANT | D_TRACKCLOSE */
.d_name = "test",
.d_open = testopen,
.d_close = testclose,
.d_read = testread,
.d_write = testwrite,
.d_ioctl = testioctl,
.d_poll = testpoll,
.d_kqfilter = testkqfilter,
};
static int
testopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
{
test_state *state = dev->si_drv1;
assert(*state == TEST_NEW);
*state = TEST_OPEN;
return 0;
}
static int
testclose(struct cdev *dev, int fflag, int devtype, struct thread *td)
{
test_state *state = dev->si_drv1;
assert(*state == TEST_KQFILTER);
*state = TEST_CLOSED;
return 0;
}
static int
testread(struct cdev *dev, struct uio *uio, int ioflag)
{
test_state *state = dev->si_drv1;
assert(*state == TEST_OPEN || *state == TEST_IOCTL);
if(*state == TEST_OPEN) {
*state = TEST_READ;
} else {
*state = TEST_READV;
}
return 0;
}
static int
testwrite(struct cdev *dev, struct uio *uio, int ioflag)
{
test_state *state = dev->si_drv1;
assert(*state == TEST_READ || *state == TEST_READV);
if(*state == TEST_READ) {
*state = TEST_WRITE;
} else {
*state = TEST_WRITEV;
}
return 0;
}
static int
testioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
struct thread *td)
{
test_state *state = dev->si_drv1;
assert(cmd == TEST_IOCTL_CMD);
assert(*state == TEST_WRITE);
*state = TEST_IOCTL;
return 0;
}
static int
testpoll(struct cdev *dev, int events, struct thread *td)
{
test_state *state = dev->si_drv1;
assert(*state == TEST_WRITEV);
*state = TEST_POLL;
return 1;
}
static int
testkqfilter(struct cdev *dev, struct knote *kn)
{
test_state *state = dev->si_drv1;
assert(*state == TEST_POLL);
*state = TEST_KQFILTER;
return TEST_KQ_ERRNO;
}
void
test_make_dev(test_state *state, const char *name)
{
struct cdev *dev = NULL;
dev = make_dev(&test_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, name);
assert(dev != NULL);
dev->si_drv1 = state;
}
