+static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_R8,
+ DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID };
+
+/*
+ * Each macrotile consists of m x n (mostly 4 x 4) tiles.
+ * Pixel data pitch/stride is aligned with macrotile width.
+ * Pixel data height is aligned with macrotile height.
+ * Entire pixel data buffer is aligned with 4k(bytes).
+ */
+static uint32_t get_ubwc_meta_size(uint32_t width, uint32_t height, uint32_t tile_width,
+ uint32_t tile_height)
+{
+ uint32_t macrotile_width, macrotile_height;
+
+ macrotile_width = DIV_ROUND_UP(width, tile_width);
+ macrotile_height = DIV_ROUND_UP(height, tile_height);
+
+ // Align meta buffer width to 64 blocks
+ macrotile_width = ALIGN(macrotile_width, MACROTILE_WIDTH_ALIGN);
+
+ // Align meta buffer height to 16 blocks
+ macrotile_height = ALIGN(macrotile_height, MACROTILE_HEIGHT_ALIGN);
+
+ return ALIGN(macrotile_width * macrotile_height, PLANE_SIZE_ALIGN);
+}
+
+static void msm_calculate_layout(struct bo *bo)
+{
+ uint32_t width, height;
+
+ width = bo->meta.width;
+ height = bo->meta.height;
+
+ /* NV12 format requires extra padding with platform
+ * specific alignments for venus driver
+ */
+ if (bo->meta.format == DRM_FORMAT_NV12) {
+ uint32_t y_stride, uv_stride, y_scanline, uv_scanline, y_plane, uv_plane, size,
+ extra_padding;
+
+ y_stride = ALIGN(width, VENUS_STRIDE_ALIGN);
+ uv_stride = ALIGN(width, VENUS_STRIDE_ALIGN);
+ y_scanline = ALIGN(height, VENUS_SCANLINE_ALIGN * 2);
+ uv_scanline = ALIGN(DIV_ROUND_UP(height, 2),
+ VENUS_SCANLINE_ALIGN * (bo->meta.tiling ? 2 : 1));
+ y_plane = y_stride * y_scanline;
+ uv_plane = uv_stride * uv_scanline;
+
+ if (bo->meta.tiling == MSM_UBWC_TILING) {
+ y_plane = ALIGN(y_plane, PLANE_SIZE_ALIGN);
+ uv_plane = ALIGN(uv_plane, PLANE_SIZE_ALIGN);
+ y_plane += get_ubwc_meta_size(width, height, 32, 8);
+ uv_plane += get_ubwc_meta_size(width >> 1, height >> 1, 16, 8);
+ extra_padding = NV12_UBWC_PADDING(y_stride);
+ } else {
+ extra_padding = NV12_LINEAR_PADDING;
+ }
+
+ bo->meta.strides[0] = y_stride;
+ bo->meta.sizes[0] = y_plane;
+ bo->meta.offsets[1] = y_plane;
+ bo->meta.strides[1] = uv_stride;
+ size = y_plane + uv_plane + extra_padding;
+ bo->meta.total_size = ALIGN(size, BUFFER_SIZE_ALIGN);
+ bo->meta.sizes[1] = bo->meta.total_size - bo->meta.sizes[0];
+ } else {
+ uint32_t stride, alignw, alignh;
+
+ alignw = ALIGN(width, DEFAULT_ALIGNMENT);
+ /* HAL_PIXEL_FORMAT_YV12 requires that the buffer's height not be aligned.
+ DRM_FORMAT_R8 of height one is used for JPEG camera output, so don't
+ height align that. */
+ if (bo->meta.format == DRM_FORMAT_YVU420_ANDROID ||
+ (bo->meta.format == DRM_FORMAT_R8 && height == 1)) {
+ alignh = height;
+ } else {
+ alignh = ALIGN(height, DEFAULT_ALIGNMENT);
+ }
+
+ stride = drv_stride_from_format(bo->meta.format, alignw, 0);
+
+ /* Calculate size and assign stride, size, offset to each plane based on format */
+ drv_bo_from_format(bo, stride, alignh, bo->meta.format);
+
+ /* For all RGB UBWC formats */
+ if (bo->meta.tiling == MSM_UBWC_TILING) {
+ bo->meta.sizes[0] += get_ubwc_meta_size(width, height, 16, 4);
+ bo->meta.total_size = bo->meta.sizes[0];
+ assert(IS_ALIGNED(bo->meta.total_size, BUFFER_SIZE_ALIGN));
+ }
+ }
+}
+
+static bool is_ubwc_fmt(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_NV12:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static void msm_add_ubwc_combinations(struct driver *drv, const uint32_t *formats,
+ uint32_t num_formats, struct format_metadata *metadata,
+ uint64_t use_flags)
+{
+ for (uint32_t i = 0; i < num_formats; i++) {
+ if (is_ubwc_fmt(formats[i])) {
+ struct combination combo = { .format = formats[i],
+ .metadata = *metadata,
+ .use_flags = use_flags };
+ drv_array_append(drv->combos, &combo);
+ }
+ }
+}
+
+/**
+ * Check for buggy apps that are known to not support modifiers, to avoid surprising them
+ * with a UBWC buffer.
+ */
+static bool should_avoid_ubwc(void)
+{
+#ifndef __ANDROID__
+ /* waffle is buggy and, requests a renderable buffer (which on qcom platforms, we
+ * want to use UBWC), and then passes it to the kernel discarding the modifier.
+ * So mesa ends up correctly rendering to as tiled+compressed, but kernel tries
+ * to display as linear. Other platforms do not see this issue, simply because
+ * they only use compressed (ex, AFBC) with the BO_USE_SCANOUT flag.
+ *
+ * See b/163137550
+ */
+ if (dlsym(RTLD_DEFAULT, "waffle_display_connect")) {
+ drv_log("WARNING: waffle detected, disabling UBWC\n");
+ return true;
+ }
+#endif
+ return false;
+}