minigbm: quick and dirty implementation of gbm_bo_map/gbm_bo_unmap
We want to add gbm_bo_map/gbm_bo_unmap entry points so certain tests
and Chrome can use driver specific map logic. This is based on the
upstream entry points in Mesa, with the addition of a plane parameter.
Currently, we just map the entire buffer and don't attempt to do partial
mappings or use the map flags. We should do this in the future...
BUG=chromium:653284
TEST=minigbm builds
Change-Id: I0423c10c55bab8fac6d6d7c6a699ab71b43aa61b
Reviewed-on: https://chromium-review.googlesource.com/393927
Commit-Ready: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
diff --git a/gbm.c b/gbm.c
index c5acc00..394aea0 100644
--- a/gbm.c
+++ b/gbm.c
@@ -195,6 +195,32 @@
return bo;
}
+PUBLIC void *
+gbm_bo_map(struct gbm_bo *bo, uint32_t x, uint32_t y, uint32_t width,
+ uint32_t height, uint32_t flags, uint32_t *stride, void **map_data,
+ size_t plane)
+{
+ if (!bo || width == 0 || height == 0 || !stride || !map_data)
+ return NULL;
+
+ assert(x == 0);
+ assert(y == 0);
+ assert(width == gbm_bo_get_width(bo));
+ assert(height == gbm_bo_get_height(bo));
+
+ *map_data = drv_bo_map(bo->bo);
+ *stride = gbm_bo_get_plane_stride(bo, plane);
+ return *map_data;
+}
+
+PUBLIC void
+gbm_bo_unmap(struct gbm_bo *bo, void *map_data)
+{
+ assert(bo);
+ assert(map_data);
+ drv_bo_unmap(bo->bo);
+}
+
PUBLIC uint32_t
gbm_bo_get_width(struct gbm_bo *bo)
{