static void test(data_t *data)
{
igt_output_t *output = data->output;
struct igt_fb *fb = &data->fb[1];
drmModeModeInfo *mode;
cairo_t *cr;
uint32_t caching;
void *buf;
igt_crc_t crc;
mode = igt_output_get_mode(output);
/* create a non-white fb where we can pwrite later */
igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, fb);
cr = igt_get_cairo_ctx(data->drm_fd, fb);
igt_paint_test_pattern(cr, fb->width, fb->height);
cairo_destroy(cr);
/* flip to it to make it UC/WC and fully flushed */
drmModeSetPlane(data->drm_fd,
data->primary->drm_plane->plane_id,
output->config.crtc->crtc_id,
fb->fb_id, 0,
0, 0, fb->width, fb->height,
0, 0, fb->width << 16, fb->height << 16);
/* flip back the original white buffer */
drmModeSetPlane(data->drm_fd,
data->primary->drm_plane->plane_id,
output->config.crtc->crtc_id,
data->fb[0].fb_id, 0,
0, 0, fb->width, fb->height,
0, 0, fb->width << 16, fb->height << 16);
/* make sure caching mode has become UC/WT */
caching = gem_get_caching(data->drm_fd, fb->gem_handle);
igt_assert(caching == I915_CACHING_NONE || caching == I915_CACHING_DISPLAY);
/* use pwrite to make the other fb all white too */
buf = malloc(fb->size);
igt_assert(buf != NULL);
memset(buf, 0xff, fb->size);
gem_write(data->drm_fd, fb->gem_handle, 0, buf, fb->size);
free(buf);
/* and flip to it */
drmModeSetPlane(data->drm_fd,
data->primary->drm_plane->plane_id,
output->config.crtc->crtc_id,
fb->fb_id, 0,
0, 0, fb->width, fb->height,
0, 0, fb->width << 16, fb->height << 16);
/* check that the crc is as expected, which requires that caches got flushed */
igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
igt_assert_crc_equal(&crc, &data->ref_crc);
}
static void test(data_t *data)
{
igt_display_t *display = &data->display;
igt_output_t *output = data->output;
struct igt_fb *fb = &data->fb[1];
drmModeModeInfo *mode;
cairo_t *cr;
char *ptr;
uint32_t caching;
void *buf;
igt_crc_t crc;
mode = igt_output_get_mode(output);
/* create a non-white fb where we can write later */
igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, fb);
ptr = dmabuf_mmap_framebuffer(data->drm_fd, fb);
cr = igt_get_cairo_ctx(data->drm_fd, fb);
igt_paint_test_pattern(cr, fb->width, fb->height);
cairo_destroy(cr);
/* flip to it to make it UC/WC and fully flushed */
igt_plane_set_fb(data->primary, fb);
igt_display_commit(display);
/* flip back the original white buffer */
igt_plane_set_fb(data->primary, &data->fb[0]);
igt_display_commit(display);
/* make sure caching mode has become UC/WT */
caching = gem_get_caching(data->drm_fd, fb->gem_handle);
igt_assert(caching == I915_CACHING_NONE || caching == I915_CACHING_DISPLAY);
/*
* firstly demonstrate the need for DMA_BUF_SYNC_START ("begin_cpu_access")
*/
if (ioctl_sync)
prime_sync_start(dma_buf_fd);
/* use dmabuf pointer to make the other fb all white too */
buf = malloc(fb->size);
igt_assert(buf != NULL);
memset(buf, 0xff, fb->size);
memcpy(ptr, buf, fb->size);
free(buf);
/* and flip to it */
igt_plane_set_fb(data->primary, fb);
igt_display_commit(display);
/* check that the crc is as expected, which requires that caches got flushed */
igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
igt_assert_crc_equal(&crc, &data->ref_crc);
/*
* now demonstrates the need for DMA_BUF_SYNC_END ("end_cpu_access")
*/
/* start over, writing non-white to the fb again and flip to it to make it
* fully flushed */
cr = igt_get_cairo_ctx(data->drm_fd, fb);
igt_paint_test_pattern(cr, fb->width, fb->height);
cairo_destroy(cr);
igt_plane_set_fb(data->primary, fb);
igt_display_commit(display);
/* sync start, to move to CPU domain */
if (ioctl_sync)
prime_sync_start(dma_buf_fd);
/* use dmabuf pointer in the same fb to make it all white */
buf = malloc(fb->size);
igt_assert(buf != NULL);
memset(buf, 0xff, fb->size);
memcpy(ptr, buf, fb->size);
free(buf);
/* if we don't change to the GTT domain again, the whites won't get flushed
* and therefore we demonstrates the need for sync end here */
if (ioctl_sync)
prime_sync_end(dma_buf_fd);
/* check that the crc is as expected, which requires that caches got flushed */
igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
igt_assert_crc_equal(&crc, &data->ref_crc);
}
