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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Ben Widawsky <ben@bwidawsk.net>
*
*/
#include <stdio.h>
#include <string.h>
#include "i915_drm.h"
#include "drmtest.h"
struct local_drm_i915_reg_read {
__u64 offset;
__u64 val; /* Return value */
};
#define REG_READ_IOCTL DRM_IOWR(DRM_COMMAND_BASE + 0x31, struct local_drm_i915_reg_read)
static void handle_bad(int ret, int lerrno, int expected, const char *desc)
{
if (ret != 0 && lerrno != expected) {
fprintf(stderr, "%s - errno was %d, but should have been %d\n",
desc, lerrno, expected);
exit(EXIT_FAILURE);
} else if (ret == 0) {
fprintf(stderr, "%s - Command succeeded, but should have failed\n",
desc);
exit(EXIT_FAILURE);
}
}
static uint64_t timer_query(int fd)
{
struct local_drm_i915_reg_read read;
int ret;
read.offset = 0x2358;
ret = drmIoctl(fd, REG_READ_IOCTL, &read);
if (ret) {
perror("positive test case failed: ");
exit(EXIT_FAILURE);
}
return read.val;
}
int main(int argc, char *argv[])
{
struct local_drm_i915_reg_read read;
int ret, fd;
uint64_t val;
fd = drm_open_any();
ret = drmIoctl(fd, REG_READ_IOCTL, &read);
if (ret == EINVAL)
exit(77);
else if (ret)
exit(EXIT_FAILURE);
val = timer_query(fd);
if (timer_query(fd) == val) {
fprintf(stderr, "Timer isn't moving, probably busted\n");
exit(EXIT_FAILURE);
}
/* bad reg */
read.offset = 0x12345678;
ret = drmIoctl(fd, REG_READ_IOCTL, &read);
handle_bad(ret, errno, EINVAL, "bad register");
close(fd);
exit(EXIT_SUCCESS);
}
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