static igt_pipe_crc_t *
pipe_crc_new(enum pipe pipe, enum intel_pipe_crc_source source, int flags)
{
igt_pipe_crc_t *pipe_crc;
char buf[128];
igt_install_exit_handler(pipe_crc_exit_handler);
pipe_crc = calloc(1, sizeof(struct _igt_pipe_crc));
pipe_crc->ctl_fd = igt_debugfs_open("i915_display_crc_ctl", O_WRONLY);
igt_assert(pipe_crc->ctl_fd != -1);
sprintf(buf, "i915_pipe_%s_crc", kmstest_pipe_name(pipe));
pipe_crc->crc_fd = igt_debugfs_open(buf, flags);
igt_assert(pipe_crc->crc_fd != -1);
pipe_crc->line_len = PIPE_CRC_LINE_LEN;
pipe_crc->buffer_len = PIPE_CRC_BUFFER_LEN;
pipe_crc->pipe = pipe;
pipe_crc->source = source;
pipe_crc->flags = flags;
return pipe_crc;
}
static void igt_pipe_crc_reset(void)
{
int fd;
fd = igt_debugfs_open("i915_display_crc_ctl", O_WRONLY);
igt_pipe_crc_pipe_off(fd, PIPE_A);
igt_pipe_crc_pipe_off(fd, PIPE_B);
igt_pipe_crc_pipe_off(fd, PIPE_C);
close(fd);
}
static bool i915_wedged_set(void)
{
int fd, ret;
igt_debug("Triggering GPU reset\n");
fd = igt_debugfs_open("i915_wedged", O_RDWR);
igt_require(fd >= 0);
ret = write(fd, "1\n", 2) == 2;
close(fd);
return ret;
}
/**
* igt_drop_caches_set:
* @val: bitmask for DROP_* values
*
* This calls the debugfs interface the drm/i915 GEM driver exposes to drop or
* evict certain classes of gem buffer objects.
*/
void igt_drop_caches_set(uint64_t val)
{
int fd;
char data[19];
size_t nbytes;
sprintf(data, "0x%" PRIx64, val);
fd = igt_debugfs_open("i915_gem_drop_caches", O_WRONLY);
igt_assert(fd >= 0);
do {
nbytes = write(fd, data, strlen(data) + 1);
} while (nbytes == -1 && (errno == EINTR || errno == EAGAIN));
igt_assert(nbytes == strlen(data) + 1);
close(fd);
}