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drm/rockchip: gem: add flag ROCKCHIP_BO_ALLOC_KMAP to assign kmap

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RGA need to access CMA buffer at kernel space, so add this flag to keep kernel
line mapping for RGA.

Change-Id: Ia59acee3c904a495792229a80c42f74ae34200e3
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
This commit is contained in:
Sandy Huang
2021-05-10 16:52:04 +08:00
committed by Tao Huang
parent 51ca868e05
commit 2563d569fe
2 changed files with 5 additions and 2 deletions
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3
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
View File

@@ -681,8 +681,9 @@ rockchip_gem_create_with_handle(struct drm_file *file_priv,
struct rockchip_gem_object *rk_obj;
struct drm_gem_object *obj;
int ret;
bool alloc_kmap = flags & ROCKCHIP_BO_ALLOC_KMAP ? true : false;
rk_obj = rockchip_gem_create_object(drm, size, false, flags);
rk_obj = rockchip_gem_create_object(drm, size, alloc_kmap, flags);
if (IS_ERR(rk_obj))
return ERR_CAST(rk_obj);

4
include/uapi/drm/rockchip_drm.h
View File

@@ -34,8 +34,10 @@ enum drm_rockchip_gem_mem_type {
/* write-combine mapping. */
ROCKCHIP_BO_WC = 1 << 2,
ROCKCHIP_BO_SECURE = 1 << 3,
/* keep kmap for cma buffer or alloc kmap for other type memory */
ROCKCHIP_BO_ALLOC_KMAP = 1 << 4,
ROCKCHIP_BO_MASK = ROCKCHIP_BO_CONTIG | ROCKCHIP_BO_CACHABLE |
ROCKCHIP_BO_WC | ROCKCHIP_BO_SECURE,
ROCKCHIP_BO_WC | ROCKCHIP_BO_SECURE | ROCKCHIP_BO_ALLOC_KMAP,
};
/**