diff options
Diffstat (limited to 'include/drm/drm_vma_manager.h')
| -rw-r--r-- | include/drm/drm_vma_manager.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/drm/drm_vma_manager.h b/include/drm/drm_vma_manager.h index d84d52f6d2b1..6c2a2f21dbf0 100644 --- a/include/drm/drm_vma_manager.h +++ b/include/drm/drm_vma_manager.h @@ -29,6 +29,18 @@ #include <linux/spinlock.h> #include <linux/types.h> +/* We make up offsets for buffer objects so we can recognize them at + * mmap time. pgoff in mmap is an unsigned long, so we need to make sure + * that the faked up offset will fit + */ +#if BITS_PER_LONG == 64 +#define DRM_FILE_PAGE_OFFSET_START ((0xFFFFFFFFUL >> PAGE_SHIFT) + 1) +#define DRM_FILE_PAGE_OFFSET_SIZE ((0xFFFFFFFFUL >> PAGE_SHIFT) * 256) +#else +#define DRM_FILE_PAGE_OFFSET_START ((0xFFFFFFFUL >> PAGE_SHIFT) + 1) +#define DRM_FILE_PAGE_OFFSET_SIZE ((0xFFFFFFFUL >> PAGE_SHIFT) * 16) +#endif + struct drm_file; struct drm_vma_offset_file { @@ -41,6 +53,7 @@ struct drm_vma_offset_node { rwlock_t vm_lock; struct drm_mm_node vm_node; struct rb_root vm_files; + void *driver_private; }; struct drm_vma_offset_manager { @@ -61,6 +74,7 @@ void drm_vma_offset_remove(struct drm_vma_offset_manager *mgr, struct drm_vma_offset_node *node); int drm_vma_node_allow(struct drm_vma_offset_node *node, struct drm_file *tag); +int drm_vma_node_allow_once(struct drm_vma_offset_node *node, struct drm_file *tag); void drm_vma_node_revoke(struct drm_vma_offset_node *node, struct drm_file *tag); bool drm_vma_node_is_allowed(struct drm_vma_offset_node *node, @@ -152,7 +166,7 @@ static inline void drm_vma_node_reset(struct drm_vma_offset_node *node) * Start address of @node for page-based addressing. 0 if the node does not * have an offset allocated. */ -static inline unsigned long drm_vma_node_start(struct drm_vma_offset_node *node) +static inline unsigned long drm_vma_node_start(const struct drm_vma_offset_node *node) { return node->vm_node.start; } |