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drm/vkms: Add functions to map/unmap GEM backing storage

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This patch add the necessary functions to map/unmap GEM
backing memory to the kernel's virtual address space.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/4b6563ae4f4337a5fd51f872424addf64e8d59a6.1532446182.git.hamohammed.sa@gmail.com
This commit is contained in:
Haneen Mohammed
2018-07-24 19:26:59 +03:00
committed by Sean Paul
parent 344d00795e
commit bb112b14af
2 changed files with 87 additions and 1 deletions
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9
drivers/gpu/drm/vkms/vkms_drv.h
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@@ -39,6 +39,8 @@ struct vkms_gem_object {
struct drm_gem_object gem;
struct mutex pages_lock; /* Page lock used in page fault handler */
struct page **pages;
unsigned int vmap_count;
void *vaddr;
};
#define drm_crtc_to_vkms_output(target) \
@@ -47,6 +49,9 @@ struct vkms_gem_object {
#define drm_device_to_vkms_device(target) \
container_of(target, struct vkms_device, drm)
#define drm_gem_to_vkms_gem(target)\
container_of(target, struct vkms_gem_object, gem)
/* CRTC */
int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_plane *primary, struct drm_plane *cursor);
@@ -75,4 +80,8 @@ int vkms_dumb_map(struct drm_file *file, struct drm_device *dev,
void vkms_gem_free_object(struct drm_gem_object *obj);
int vkms_gem_vmap(struct drm_gem_object *obj);
void vkms_gem_vunmap(struct drm_gem_object *obj);
#endif /* _VKMS_DRV_H_ */