diff options
| -rw-r--r-- | drivers/gpu/drm/drm_memory.c | 13 | ||||
| -rw-r--r-- | include/drm/drm_cache.h | 2 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c index fc0ebd273ef8..7ca500b8c399 100644 --- a/drivers/gpu/drm/drm_memory.c +++ b/drivers/gpu/drm/drm_memory.c @@ -149,3 +149,16 @@ void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev) iounmap(map->handle); } EXPORT_SYMBOL(drm_legacy_ioremapfree); + +u64 drm_get_max_iomem(void) +{ + struct resource *tmp; + u64 max_iomem = 0; + + for (tmp = iomem_resource.child; tmp; tmp = tmp->sibling) { + max_iomem = max(max_iomem, tmp->end); + } + + return max_iomem; +} +EXPORT_SYMBOL(drm_get_max_iomem); diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h index beab0f0d0cfb..bfe1639df02d 100644 --- a/include/drm/drm_cache.h +++ b/include/drm/drm_cache.h @@ -38,6 +38,8 @@ void drm_clflush_pages(struct page *pages[], unsigned long num_pages); void drm_clflush_sg(struct sg_table *st); void drm_clflush_virt_range(void *addr, unsigned long length); +u64 drm_get_max_iomem(void); + static inline bool drm_arch_can_wc_memory(void) { |