Vmap operations may acquire the dmabuf reservation lock, which is not allowed within atomic commit-tail functions. Therefore move vmap and vunmap from the damage handler into prepare_fb and cleanup_fb callbacks.
The mapping is provided as GEM shadow-buffered plane. The functions in the commit tail use the pre-established mapping for damage handling.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/mgag200/mgag200_mode.c | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 1dfc42170059..f871753e898e 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -17,6 +17,7 @@ #include <drm/drm_damage_helper.h> #include <drm/drm_format_helper.h> #include <drm/drm_fourcc.h> +#include <drm/drm_gem_atomic_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_plane_helper.h> #include <drm/drm_print.h> @@ -1549,22 +1550,12 @@ mgag200_simple_display_pipe_mode_valid(struct drm_simple_display_pipe *pipe,
static void mgag200_handle_damage(struct mga_device *mdev, struct drm_framebuffer *fb, - struct drm_rect *clip) + struct drm_rect *clip, const struct dma_buf_map *map) { - struct drm_device *dev = &mdev->base; - struct dma_buf_map map; - void *vmap; - int ret; - - ret = drm_gem_shmem_vmap(fb->obj[0], &map); - if (drm_WARN_ON(dev, ret)) - return; /* BUG: SHMEM BO should always be vmapped */ - vmap = map.vaddr; /* TODO: Use mapping abstraction properly */ + void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
drm_fb_memcpy_dstclip(mdev->vram, vmap, fb, clip);
- drm_gem_shmem_vunmap(fb->obj[0], &map); - /* Always scanout image at VRAM offset 0 */ mgag200_set_startadd(mdev, (u32)0); mgag200_set_offset(mdev, fb); @@ -1580,6 +1571,7 @@ mgag200_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, struct mga_device *mdev = to_mga_device(dev); struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; struct drm_framebuffer *fb = plane_state->fb; + struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state); struct drm_rect fullscreen = { .x1 = 0, .x2 = fb->width, @@ -1608,7 +1600,7 @@ mgag200_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, mga_crtc_load_lut(crtc); mgag200_enable_display(mdev);
- mgag200_handle_damage(mdev, fb, &fullscreen); + mgag200_handle_damage(mdev, fb, &fullscreen, &shadow_plane_state->map[0]); }
static void @@ -1649,6 +1641,7 @@ mgag200_simple_display_pipe_update(struct drm_simple_display_pipe *pipe, struct drm_device *dev = plane->dev; struct mga_device *mdev = to_mga_device(dev); struct drm_plane_state *state = plane->state; + struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state); struct drm_framebuffer *fb = state->fb; struct drm_rect damage;
@@ -1656,7 +1649,7 @@ mgag200_simple_display_pipe_update(struct drm_simple_display_pipe *pipe, return;
if (drm_atomic_helper_damage_merged(old_state, state, &damage)) - mgag200_handle_damage(mdev, fb, &damage); + mgag200_handle_damage(mdev, fb, &damage, &shadow_plane_state->map[0]); }
static const struct drm_simple_display_pipe_funcs @@ -1666,7 +1659,7 @@ mgag200_simple_display_pipe_funcs = { .disable = mgag200_simple_display_pipe_disable, .check = mgag200_simple_display_pipe_check, .update = mgag200_simple_display_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, + DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS, };
static const uint32_t mgag200_simple_display_pipe_formats[] = {