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authorBoris Brezillon <boris.brezillon@collabora.com>2024-05-02 18:51:55 +0200
committerBoris Brezillon <boris.brezillon@collabora.com>2024-05-13 09:49:15 +0200
commite3193f0fbd6d83510ff6879ac248f42a7c0fefe7 (patch)
treef351e0ddd2a5671c1761fd055a56c05f46549c75 /include/uapi
parentd2143297579f12ea22479d403d955819838e7e67 (diff)
drm/panthor: Make sure the tiler initial/max chunks are consistent
It doesn't make sense to have a maximum number of chunks smaller than the initial number of chunks attached to the context. Fix the uAPI header to reflect the new constraint, and mention the undocumented "initial_chunk_count > 0" constraint while at it. v3: - Add R-b v2: - Fix the check Fixes: 9cca48fa4f89 ("drm/panthor: Add the heap logical block") Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240502165158.1458959-3-boris.brezillon@collabora.com
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/drm/panthor_drm.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h
index dadb05ab1235..5db80a0682d5 100644
--- a/include/uapi/drm/panthor_drm.h
+++ b/include/uapi/drm/panthor_drm.h
@@ -895,13 +895,17 @@ struct drm_panthor_tiler_heap_create {
/** @vm_id: VM ID the tiler heap should be mapped to */
__u32 vm_id;
- /** @initial_chunk_count: Initial number of chunks to allocate. */
+ /** @initial_chunk_count: Initial number of chunks to allocate. Must be at least one. */
__u32 initial_chunk_count;
/** @chunk_size: Chunk size. Must be a power of two at least 256KB large. */
__u32 chunk_size;
- /** @max_chunks: Maximum number of chunks that can be allocated. */
+ /**
+ * @max_chunks: Maximum number of chunks that can be allocated.
+ *
+ * Must be at least @initial_chunk_count.
+ */
__u32 max_chunks;
/**