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| author | Haneen Mohammed <hamohammed.sa@gmail.com> | 2018-07-24 19:29:23 +0300 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-07-30 20:03:10 +0300 |
| commit | 8ce1bb0b5337db4be801eea234f959104323f959 (patch) | |
| tree | 7da285ecdb1828384c2a2aab8376edb2626ed777 | |
| parent | bb112b14af8d1910909eb132c78ddf49be907e31 (diff) | |
| download | linux-8ce1bb0b5337db4be801eea234f959104323f959.tar.xz | |
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: 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
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_plane.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 9f75b1e2c1c4..5611e7cf5fc9 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -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) |