it will be used to check if the driver needs swiotlb Change-Id: Idbe47af8f12032d4803bb3d47273e807f19169c3 Signed-off-by: Chunming Zhou <david1.z...@amd.com> --- include/drm/drm_cache.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h index beab0f0d0cfb..442c9ba63d03 100644 --- a/include/drm/drm_cache.h +++ b/include/drm/drm_cache.h @@ -39,6 +39,19 @@ 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); +static inline 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; +} + + static inline bool drm_arch_can_wc_memory(void) { #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE) -- 2.14.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel