drm/ttm/radeon: add dma32 support.
This add support for using dma32 memory on gpus that really need it.
Currently IGPs are left without DMA32 but we might need to change
that unless we can fix rs690.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index a753598..e55e797 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -224,6 +224,9 @@
TTM_ASSERT_LOCKED(&bo->mutex);
bo->ttm = NULL;
+ if (bdev->need_dma32)
+ page_flags |= TTM_PAGE_FLAG_DMA32;
+
switch (bo->type) {
case ttm_bo_type_device:
if (zero_alloc)
@@ -1332,7 +1335,8 @@
int ttm_bo_device_init(struct ttm_bo_device *bdev,
struct ttm_mem_global *mem_glob,
- struct ttm_bo_driver *driver, uint64_t file_page_offset)
+ struct ttm_bo_driver *driver, uint64_t file_page_offset,
+ bool need_dma32)
{
int ret = -EINVAL;
@@ -1369,6 +1373,7 @@
INIT_LIST_HEAD(&bdev->ddestroy);
INIT_LIST_HEAD(&bdev->swap_lru);
bdev->dev_mapping = NULL;
+ bdev->need_dma32 = need_dma32;
ttm_mem_init_shrink(&bdev->shrink, ttm_bo_swapout);
ret = ttm_mem_register_shrink(mem_glob, &bdev->shrink);
if (unlikely(ret != 0)) {