From: Thomas Hellström Date: Wed, 2 Jun 2021 08:38:12 +0000 (+0200) Subject: drm/ttm: Use drm_memcpy_from_wc for TTM bo moves X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=053c57696cb99c35859e9e9cc58c7d00e434d956;p=kernel.git drm/ttm: Use drm_memcpy_from_wc for TTM bo moves Use fast wc memcpy for reading out of wc memory for TTM bo moves. Cc: Dave Airlie Cc: Christian König Cc: Daniel Vetter Signed-off-by: Thomas Hellström Reviewed-by: Christian König #v4 Link: https://lore.kernel.org/r/20210602083818.241793-6-thomas.hellstrom@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20210602083818.241793-6-thomas.hellstrom@linux.intel.com --- diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 0d1e417e62d61..3161adb5903c9 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -31,6 +31,7 @@ #include #include +#include #include #include #include @@ -118,22 +119,8 @@ void ttm_move_memcpy(struct ttm_buffer_object *bo, dst_ops->map_local(dst_iter, &dst_map, i); src_ops->map_local(src_iter, &src_map, i); - if (!src_map.is_iomem && !dst_map.is_iomem) { - memcpy(dst_map.vaddr, src_map.vaddr, PAGE_SIZE); - } else if (!src_map.is_iomem) { - dma_buf_map_memcpy_to(&dst_map, src_map.vaddr, - PAGE_SIZE); - } else if (!dst_map.is_iomem) { - memcpy_fromio(dst_map.vaddr, src_map.vaddr_iomem, - PAGE_SIZE); - } else { - int j; - u32 __iomem *src = src_map.vaddr_iomem; - u32 __iomem *dst = dst_map.vaddr_iomem; - - for (j = 0; j < (PAGE_SIZE / sizeof(u32)); ++j) - iowrite32(ioread32(src++), dst++); - } + drm_memcpy_from_wc(&dst_map, &src_map, PAGE_SIZE); + if (src_ops->unmap_local) src_ops->unmap_local(src_iter, &src_map); if (dst_ops->unmap_local)