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| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2021-06-02 10:38:12 +0200 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2021-06-07 16:07:08 +0200 |
| commit | 053c57696cb99c35859e9e9cc58c7d00e434d956 (patch) | |
| tree | d7021e837559aa341f8601294ef0213316d97310 /drivers/gpu/drm/ttm | |
| parent | drm: Add a prefetching memcpy_from_wc (diff) | |
| download | linux-053c57696cb99c35859e9e9cc58c7d00e434d956.tar.xz linux-053c57696cb99c35859e9e9cc58c7d00e434d956.zip | |
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 <airlied@gmail.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com> #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
Diffstat (limited to 'drivers/gpu/drm/ttm')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 0d1e417e62d6..3161adb5903c 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -31,6 +31,7 @@ #include <drm/ttm/ttm_bo_driver.h> #include <drm/ttm/ttm_placement.h> +#include <drm/drm_cache.h> #include <drm/drm_vma_manager.h> #include <linux/dma-buf-map.h> #include <linux/io.h> @@ -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) |