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drm/vkms: map/unmap buffers in [prepare/cleanup]_fb hooks

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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: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/17d19f61b6539ce1b614c59762d04d816261b307.1532446182.git.hamohammed.sa@gmail.com
This commit is contained in:
Haneen Mohammed 2018-07-24 19:29:23 +03:00 committed by Sean Paul
parent bb112b14af
commit 8ce1bb0b53
1 changed files with 34 additions and 0 deletions
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34
drivers/gpu/drm/vkms/vkms_plane.c
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@ -9,6 +9,7 @@
#include "vkms_drv.h" #include "vkms_drv.h"
#include <drm/drm_plane_helper.h> #include <drm/drm_plane_helper.h>
#include <drm/drm_atomic_helper.h> #include <drm/drm_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
static const struct drm_plane_funcs vkms_plane_funcs = { static const struct drm_plane_funcs vkms_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane, .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 = { static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
.atomic_update = vkms_primary_plane_update, .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) struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev)