Am 16.07.20 um 14:50 schrieb Christian König:
> The helper doesn't expose any not-mapable memory resources.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
> ---
> drivers/gpu/drm/drm_gem_vram_helper.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c
> index e62a2b68fe3a..b6e4e49027aa 100644
> --- a/drivers/gpu/drm/drm_gem_vram_helper.c
> +++ b/drivers/gpu/drm/drm_gem_vram_helper.c
> @@ -1017,14 +1017,13 @@ static int bo_driver_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
> {
> switch (type) {
> case TTM_PL_SYSTEM:
> - man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
> + man->flags = 0;
> man->available_caching = TTM_PL_MASK_CACHING;
> man->default_caching = TTM_PL_FLAG_CACHED;
> break;
> case TTM_PL_VRAM:
> man->func = &ttm_bo_manager_func;
> - man->flags = TTM_MEMTYPE_FLAG_FIXED |
> - TTM_MEMTYPE_FLAG_MAPPABLE;
> + man->flags = TTM_MEMTYPE_FLAG_FIXED;
> man->available_caching = TTM_PL_FLAG_UNCACHED |
> TTM_PL_FLAG_WC;
> man->default_caching = TTM_PL_FLAG_WC;
> @@ -1067,12 +1066,8 @@ static void bo_driver_move_notify(struct ttm_buffer_object *bo,
> static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev,
> struct ttm_mem_reg *mem)
> {
> - struct ttm_mem_type_manager *man = bdev->man + mem->mem_type;
> struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bdev);
>
> - if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
> - return -EINVAL;
> -
> mem->bus.addr = NULL;
> mem->bus.size = mem->num_pages << PAGE_SHIFT;
>
>
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer
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