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Commit 8ce1bb0b authored by Haneen Mohammed's avatar Haneen Mohammed Committed by Sean Paul
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drm/vkms: map/unmap buffers in [prepare/cleanup]_fb hooks 



This patch map/unmap GEM backing memory to kernel address space
in prepare/cleanup_fb respectively and cache the virtual address
for later use.

Signed-off-by: default avatarHaneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/17d19f61b6539ce1b614c59762d04d816261b307.1532446182.git.hamohammed.sa@gmail.com
parent bb112b14

drivers/gpu/drm/vkms/vkms_plane.c

+34 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include "vkms_drv.h"

#include <drm/drm_plane_helper.h>

#include <drm/drm_atomic_helper.h>

#include <drm/drm_gem_framebuffer_helper.h>



static const struct drm_plane_funcs vkms_plane_funcs = {

	.update_plane		= drm_atomic_helper_update_plane,
@@ -24,8 +25,41 @@ static void vkms_primary_plane_update(struct drm_plane *plane, 
{

}



static int vkms_prepare_fb(struct drm_plane *plane,

			   struct drm_plane_state *state)

{

	struct drm_gem_object *gem_obj;

	struct vkms_gem_object *vkms_obj;

	int ret;



	if (!state->fb)

		return 0;



	gem_obj = drm_gem_fb_get_obj(state->fb, 0);

	vkms_obj = drm_gem_to_vkms_gem(gem_obj);

	ret = vkms_gem_vmap(gem_obj);

	if (ret)

		DRM_ERROR("vmap failed: %d\n", ret);



	return drm_gem_fb_prepare_fb(plane, state);

}



static void vkms_cleanup_fb(struct drm_plane *plane,

			    struct drm_plane_state *old_state)

{

	struct drm_gem_object *gem_obj;



	if (!old_state->fb)

		return;



	gem_obj = drm_gem_fb_get_obj(old_state->fb, 0);

	vkms_gem_vunmap(gem_obj);

}



static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {

	.atomic_update		= vkms_primary_plane_update,

	.prepare_fb		= vkms_prepare_fb,

	.cleanup_fb		= vkms_cleanup_fb,

};



struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev)