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charset="utf-8" Add drm_panic module supports for hyperv drm so that panic screen can be displayed on panic. Signed-off-by: Ryosuke Yasuoka --- drivers/gpu/drm/drm_simple_kms_helper.c | 26 +++++++++++++ drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 42 +++++++++++++++++++++ include/drm/drm_simple_kms_helper.h | 22 +++++++++++ 3 files changed, 90 insertions(+) diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_= simple_kms_helper.c index 250819fbc5ce..508a5961d2b0 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -14,6 +14,7 @@ #include #include #include +#include =20 /** * DOC: overview @@ -316,6 +317,29 @@ static bool drm_simple_kms_format_mod_supported(struct= drm_plane *plane, return modifier =3D=3D DRM_FORMAT_MOD_LINEAR; } =20 +static int drm_simple_kms_plane_get_scanout_buffer(struct drm_plane *plane, + struct drm_scanout_buffer *sb) +{ + struct drm_simple_display_pipe *pipe; + + pipe =3D container_of(plane, struct drm_simple_display_pipe, plane); + if (!pipe->funcs || !pipe->funcs->get_scanout_buffer) + return -EINVAL; + + return pipe->funcs->get_scanout_buffer(pipe, sb); +} + +static void drm_simple_kms_plane_panic_flush(struct drm_plane *plane) +{ + struct drm_simple_display_pipe *pipe; + + pipe =3D container_of(plane, struct drm_simple_display_pipe, plane); + if (!pipe->funcs || !pipe->funcs->panic_flush) + return; + + pipe->funcs->panic_flush(pipe); +} + static const struct drm_plane_helper_funcs drm_simple_kms_plane_helper_fun= cs =3D { .prepare_fb =3D drm_simple_kms_plane_prepare_fb, .cleanup_fb =3D drm_simple_kms_plane_cleanup_fb, @@ -323,6 +347,8 @@ static const struct drm_plane_helper_funcs drm_simple_k= ms_plane_helper_funcs =3D { .end_fb_access =3D drm_simple_kms_plane_end_fb_access, .atomic_check =3D drm_simple_kms_plane_atomic_check, .atomic_update =3D drm_simple_kms_plane_atomic_update, + .get_scanout_buffer =3D drm_simple_kms_plane_get_scanout_buffer, + .panic_flush =3D drm_simple_kms_plane_panic_flush, }; =20 static void drm_simple_kms_plane_reset(struct drm_plane *plane) diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c b/drivers/gpu/drm/= hyperv/hyperv_drm_modeset.c index 6c6b57298797..8e8eacb0d07f 100644 --- a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c +++ b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c @@ -16,6 +16,7 @@ #include #include #include +#include =20 #include "hyperv_drm.h" =20 @@ -146,10 +147,51 @@ static void hyperv_pipe_update(struct drm_simple_disp= lay_pipe *pipe, } } =20 +static int hyperv_pipe_get_scanout_buffer(struct drm_simple_display_pipe *= pipe, + struct drm_scanout_buffer *sb) +{ + struct drm_plane_state *state =3D pipe->plane.state; + struct hyperv_drm_device *hv; + struct drm_framebuffer *fb; + + if (!state || !state->fb || !state->visible) + return -ENODEV; + + fb =3D state->fb; + hv =3D to_hv(fb->dev); + + iosys_map_set_vaddr_iomem(&sb->map[0], hv->vram); + sb->format =3D fb->format; + sb->height =3D fb->height; + sb->width =3D fb->width; + sb->pitch[0] =3D fb->pitches[0]; + return 0; +} + +static void hyperv_pipe_panic_flush(struct drm_simple_display_pipe *pipe) +{ + struct drm_plane_state *state =3D pipe->plane.state; + struct hyperv_drm_device *hv; + struct drm_rect rect; + + if (!state || !state->fb) + return; + + rect.x1 =3D 0; + rect.y1 =3D 0; + rect.x2 =3D state->fb->width; + rect.y2 =3D state->fb->height; + + hv =3D to_hv(state->fb->dev); + hyperv_update_dirt(hv->hdev, &rect); +} + static const struct drm_simple_display_pipe_funcs hyperv_pipe_funcs =3D { .enable =3D hyperv_pipe_enable, .check =3D hyperv_pipe_check, .update =3D hyperv_pipe_update, + .get_scanout_buffer =3D hyperv_pipe_get_scanout_buffer, + .panic_flush =3D hyperv_pipe_panic_flush, DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS, }; =20 diff --git a/include/drm/drm_simple_kms_helper.h b/include/drm/drm_simple_k= ms_helper.h index b2486d073763..126d0d170e81 100644 --- a/include/drm/drm_simple_kms_helper.h +++ b/include/drm/drm_simple_kms_helper.h @@ -10,6 +10,7 @@ #include #include =20 +struct drm_scanout_buffer; struct drm_simple_display_pipe; =20 /** @@ -226,6 +227,27 @@ struct drm_simple_display_pipe_funcs { */ void (*destroy_plane_state)(struct drm_simple_display_pipe *pipe, struct drm_plane_state *plane_state); + + /** + * @get_scanout_buffer: + * + * Optional, called by &drm_plane_funcs.get_scanout_buffer. Please + * read the documentation for the &drm_plane_funcs.get_scanout_buffer + * hook for more details. + * + */ + int (*get_scanout_buffer)(struct drm_simple_display_pipe *pipe, + struct drm_scanout_buffer *sb); + + /** + * @panic_flush: + * + * Optional, called by &drm_plane_funcs.panic_flush. Please read the + * documentation for the &drm_plane_funcs.get_scanout_buffer hook for + * more details. + * + */ + void (*panic_flush)(struct drm_simple_display_pipe *pipe); }; =20 /** --=20 2.48.1