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2e1c11546a
As upon success, errno is invalid and may give spurious false results. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65157 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
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* Copyright © 2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Ben Widawsky <ben@bwidawsk.net>
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "i915_drm.h"
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#include "drmtest.h"
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struct local_drm_i915_reg_read {
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__u64 offset;
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__u64 val; /* Return value */
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};
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#define REG_READ_IOCTL DRM_IOWR(DRM_COMMAND_BASE + 0x31, struct local_drm_i915_reg_read)
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static void handle_bad(int ret, int expected, const char *desc)
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{
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if (ret != 0 && errno != expected) {
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fprintf(stderr, "%s - errno was %d, but should have been %d\n",
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desc, errno, expected);
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exit(EXIT_FAILURE);
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} else if (ret == 0) {
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fprintf(stderr, "%s - Command succeeded, but should have failed\n",
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desc);
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exit(EXIT_FAILURE);
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}
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}
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static uint64_t timer_query(int fd)
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{
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struct local_drm_i915_reg_read reg_read;
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reg_read.offset = 0x2358;
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if (drmIoctl(fd, REG_READ_IOCTL, ®_read)) {
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perror("positive test case failed: ");
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exit(EXIT_FAILURE);
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}
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return reg_read.val;
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}
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int main(int argc, char *argv[])
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{
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struct local_drm_i915_reg_read reg_read;
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int fd;
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fd = drm_open_any();
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reg_read.offset = 0x2358;
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if (drmIoctl(fd, REG_READ_IOCTL, ®_read))
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exit(errno == EINVAL ? 77 : EXIT_FAILURE);
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reg_read.val = timer_query(fd);
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sleep(1);
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if (timer_query(fd) == reg_read.val) {
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fprintf(stderr, "Timer isn't moving, probably busted\n");
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exit(EXIT_FAILURE);
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}
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/* bad reg */
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reg_read.offset = 0x12345678;
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handle_bad(drmIoctl(fd, REG_READ_IOCTL, ®_read),
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EINVAL, "bad register");
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close(fd);
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exit(EXIT_SUCCESS);
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}
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