In this subtest, as a first step, MAX_FENCES+1 number of framebuffers are
created backed up by objects that have multiple GGTT views (normal and
rotated). Next, we have the i915 driver instantiate a normal view followed
by a rotated view. We continue doing the above MAX_FENCES + 1 times.
v2:
- Add a igt_require() to check if there is enough GTT space left for
MAX_FENCES+1 framebuffers. (Tvrtko)
- Make data2 local to test_plane_rotation_exhaust_fences(). (Tvrtko)
- If there is a failure, deallocate all the previously allocated
framebuffers before asserting.
v3: Close the gem handle if set_tiling or addfb fails. (Tvrtko)
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@xxxxxxxxx>
---
tests/kms_rotation_crc.c | 108 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 108 insertions(+)
diff --git a/tests/kms_rotation_crc.c b/tests/kms_rotation_crc.c
index ed6eeef..7e18b1e 100644
--- a/tests/kms_rotation_crc.c
+++ b/tests/kms_rotation_crc.c
@@ -25,6 +25,7 @@
#include "igt.h"
#include <math.h>
+#define MAX_FENCES 32
typedef struct {
int gfx_fd;
@@ -376,6 +377,108 @@ static void test_plane_rotation_ytiled_obj(data_t *data, enum igt_plane plane_ty
igt_assert(ret == 0);
}
+static void test_plane_rotation_exhaust_fences(data_t *data, enum igt_plane plane_type)
+{
+ igt_display_t *display = &data->display;
+ uint64_t tiling = LOCAL_I915_FORMAT_MOD_Y_TILED;
+ uint32_t format = DRM_FORMAT_XRGB8888;
+ int bpp = igt_drm_format_to_bpp(format);
+ enum igt_commit_style commit = COMMIT_LEGACY;
+ int fd = data->gfx_fd;
+ igt_output_t *output = &display->outputs[0];
+ igt_plane_t *plane;
+ drmModeModeInfo *mode;
+ data_t data2[MAX_FENCES+1] = {};
+ unsigned int stride, size, w, h;
+ uint32_t gem_handle;
+ uint64_t total_aperture_size, total_fbs_size;
+ int i, ret;
+
+ igt_require(output != NULL && output->valid == true);
+
+ plane = igt_output_get_plane(output, plane_type);
+ igt_require(igt_plane_supports_rotation(plane));
+
+ if (plane_type == IGT_PLANE_PRIMARY || plane_type == IGT_PLANE_CURSOR) {
+ igt_require(data->display.has_universal_planes);
+ commit = COMMIT_UNIVERSAL;
+ }
+
+ mode = igt_output_get_mode(output);
+ w = mode->hdisplay;
+ h = mode->vdisplay;
+
+ for (stride = 512; stride < (w * bpp / 8); stride *= 2)
+ ;
+ for (size = 1024*1024; size < stride * h; size *= 2)
+ ;
+
+ /*
+ * Make sure there is atleast 90% of the available GTT space left
+ * for creating (MAX_FENCES+1) framebuffers.
+ */
+ total_fbs_size = size * (MAX_FENCES + 1);
+ total_aperture_size = gem_available_aperture_size(fd);
+ igt_require(total_fbs_size < total_aperture_size * 0.9);
+
+ igt_plane_set_fb(plane, NULL);
+ igt_display_commit(display);
+
+ for (i = 0; i < MAX_FENCES + 1; i++) {
+ gem_handle = gem_create(fd, size);
+ ret = __gem_set_tiling(fd, gem_handle, I915_TILING_Y, stride);
+ if (ret) {
+ igt_warn("failed to set tiling\n");
+ goto err_alloc;
+ }
+
+ ret = (__kms_addfb(fd, gem_handle, w, h, stride,
+ format, tiling, LOCAL_DRM_MODE_FB_MODIFIERS,
+ &data2[i].fb.fb_id));
+ if (ret) {
+ igt_warn("failed to create framebuffer\n");
+ goto err_alloc;
+ }
+
+ data2[i].fb.width = w;
+ data2[i].fb.height = h;
+ data2[i].fb.gem_handle = gem_handle;
+
+ igt_plane_set_fb(plane, &data2[i].fb);
+ igt_plane_set_rotation(plane, IGT_ROTATION_0);
+
+ ret = igt_display_try_commit2(display, commit);
+ if (ret) {
+ igt_warn("failed to commit unrotated fb\n");
+ goto err_commit;
+ }
+
+ igt_plane_set_rotation(plane, IGT_ROTATION_90);
+
+ drmModeObjectSetProperty(fd, plane->drm_plane->plane_id,
+ DRM_MODE_OBJECT_PLANE,
+ plane->rotation_property,
+ plane->rotation);
+ ret = igt_display_try_commit2(display, commit);
+ if (ret) {
+ igt_warn("failed to commit hardware rotated fb\n");
+ goto err_commit;
+ }
+ }
+
+err_alloc:
+ if (ret)
+ gem_close(fd, gem_handle);
+
+ i--;
+err_commit:
+ for (; i >= 0; i--)
+ igt_remove_fb(fd, &data2[i].fb);
+
+ kmstest_restore_vt_mode();
+ igt_assert(ret == 0);
+}
+
igt_main
{
data_t data = {};
@@ -471,6 +574,11 @@ igt_main
test_plane_rotation_ytiled_obj(&data, IGT_PLANE_PRIMARY);
}
+ igt_subtest_f("exhaust-fences") {
+ igt_require(gen >= 9);
+ test_plane_rotation_exhaust_fences(&data, IGT_PLANE_PRIMARY);
+ }
+
igt_fixture {
igt_display_fini(&data.display);
}
--
2.4.3
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