| Message ID | 20171013062002.4058-1-airlied@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Oct 13, 2017 at 04:20:02PM +1000, Dave Airlie wrote: > From: Dave Airlie <airlied@redhat.com> > > In order to implement plane leasing we need to count things, > just make the code consistent with the counting code currently > used for counting crtcs/encoders/connectors and drop the need > for num_overlay_planes. > > v2: don't forget to assign plane_ptr. (keithp) > v3: use correct bounds check, found by igt. Oh sweet, igt is better than I thought \o/ Since this was the only thing I spotted: Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> > Signed-off-by: Dave Airlie <airlied@redhat.com> > --- > drivers/gpu/drm/drm_mode_config.c | 1 - > drivers/gpu/drm/drm_plane.c | 46 ++++++++++++++------------------------- > include/drm/drm_mode_config.h | 13 ----------- > 3 files changed, 16 insertions(+), 44 deletions(-) > > diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c > index 74f6ff5df656..919e78d45ab0 100644 > --- a/drivers/gpu/drm/drm_mode_config.c > +++ b/drivers/gpu/drm/drm_mode_config.c > @@ -385,7 +385,6 @@ void drm_mode_config_init(struct drm_device *dev) > dev->mode_config.num_connector = 0; > dev->mode_config.num_crtc = 0; > dev->mode_config.num_encoder = 0; > - dev->mode_config.num_overlay_plane = 0; > dev->mode_config.num_total_plane = 0; > } > EXPORT_SYMBOL(drm_mode_config_init); > diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c > index 574fd1475214..8d9824804b0c 100644 > --- a/drivers/gpu/drm/drm_plane.c > +++ b/drivers/gpu/drm/drm_plane.c > @@ -241,8 +241,6 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, > > list_add_tail(&plane->head, &config->plane_list); > plane->index = config->num_total_plane++; > - if (plane->type == DRM_PLANE_TYPE_OVERLAY) > - config->num_overlay_plane++; > > drm_object_attach_property(&plane->base, > config->plane_type_property, > @@ -353,8 +351,6 @@ void drm_plane_cleanup(struct drm_plane *plane) > > list_del(&plane->head); > dev->mode_config.num_total_plane--; > - if (plane->type == DRM_PLANE_TYPE_OVERLAY) > - dev->mode_config.num_overlay_plane--; > > WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); > if (plane->state && plane->funcs->atomic_destroy_state) > @@ -462,43 +458,33 @@ int drm_mode_getplane_res(struct drm_device *dev, void *data, > struct drm_mode_config *config; > struct drm_plane *plane; > uint32_t __user *plane_ptr; > - int copied = 0; > - unsigned num_planes; > + int count = 0; > > if (!drm_core_check_feature(dev, DRIVER_MODESET)) > return -EINVAL; > > config = &dev->mode_config; > - > - if (file_priv->universal_planes) > - num_planes = config->num_total_plane; > - else > - num_planes = config->num_overlay_plane; > + plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr); > > /* > * This ioctl is called twice, once to determine how much space is > * needed, and the 2nd time to fill it. > */ > - if (num_planes && > - (plane_resp->count_planes >= num_planes)) { > - plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; > - > - /* Plane lists are invariant, no locking needed. */ > - drm_for_each_plane(plane, dev) { > - /* > - * Unless userspace set the 'universal planes' > - * capability bit, only advertise overlays. > - */ > - if (plane->type != DRM_PLANE_TYPE_OVERLAY && > - !file_priv->universal_planes) > - continue; > - > - if (put_user(plane->base.id, plane_ptr + copied)) > - return -EFAULT; > - copied++; > - } > + drm_for_each_plane(plane, dev) { > + /* > + * Unless userspace set the 'universal planes' > + * capability bit, only advertise overlays. > + */ > + if (plane->type != DRM_PLANE_TYPE_OVERLAY && > + !file_priv->universal_planes) > + continue; > + > + if (count < plane_resp->count_planes && > + put_user(plane->base.id, plane_ptr + count)) > + return -EFAULT; > + count++; > } > - plane_resp->count_planes = num_planes; > + plane_resp->count_planes = count; > > return 0; > } > diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h > index 1b37368416c8..0b4ac2ebc610 100644 > --- a/include/drm/drm_mode_config.h > +++ b/include/drm/drm_mode_config.h > @@ -429,19 +429,6 @@ struct drm_mode_config { > */ > struct list_head encoder_list; > > - /** > - * @num_overlay_plane: > - * > - * Number of overlay planes on this device, excluding primary and cursor > - * planes. > - * > - * Track number of overlay planes separately from number of total > - * planes. By default we only advertise overlay planes to userspace; if > - * userspace sets the "universal plane" capability bit, we'll go ahead > - * and expose all planes. This is invariant over the lifetime of a > - * device and hence doesn't need any locks. > - */ > - int num_overlay_plane; > /** > * @num_total_plane: > * > -- > 2.14.2 > > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index 74f6ff5df656..919e78d45ab0 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -385,7 +385,6 @@ void drm_mode_config_init(struct drm_device *dev) dev->mode_config.num_connector = 0; dev->mode_config.num_crtc = 0; dev->mode_config.num_encoder = 0; - dev->mode_config.num_overlay_plane = 0; dev->mode_config.num_total_plane = 0; } EXPORT_SYMBOL(drm_mode_config_init); diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 574fd1475214..8d9824804b0c 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -241,8 +241,6 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, list_add_tail(&plane->head, &config->plane_list); plane->index = config->num_total_plane++; - if (plane->type == DRM_PLANE_TYPE_OVERLAY) - config->num_overlay_plane++; drm_object_attach_property(&plane->base, config->plane_type_property, @@ -353,8 +351,6 @@ void drm_plane_cleanup(struct drm_plane *plane) list_del(&plane->head); dev->mode_config.num_total_plane--; - if (plane->type == DRM_PLANE_TYPE_OVERLAY) - dev->mode_config.num_overlay_plane--; WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); if (plane->state && plane->funcs->atomic_destroy_state) @@ -462,43 +458,33 @@ int drm_mode_getplane_res(struct drm_device *dev, void *data, struct drm_mode_config *config; struct drm_plane *plane; uint32_t __user *plane_ptr; - int copied = 0; - unsigned num_planes; + int count = 0; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; config = &dev->mode_config; - - if (file_priv->universal_planes) - num_planes = config->num_total_plane; - else - num_planes = config->num_overlay_plane; + plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr); /* * This ioctl is called twice, once to determine how much space is * needed, and the 2nd time to fill it. */ - if (num_planes && - (plane_resp->count_planes >= num_planes)) { - plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; - - /* Plane lists are invariant, no locking needed. */ - drm_for_each_plane(plane, dev) { - /* - * Unless userspace set the 'universal planes' - * capability bit, only advertise overlays. - */ - if (plane->type != DRM_PLANE_TYPE_OVERLAY && - !file_priv->universal_planes) - continue; - - if (put_user(plane->base.id, plane_ptr + copied)) - return -EFAULT; - copied++; - } + drm_for_each_plane(plane, dev) { + /* + * Unless userspace set the 'universal planes' + * capability bit, only advertise overlays. + */ + if (plane->type != DRM_PLANE_TYPE_OVERLAY && + !file_priv->universal_planes) + continue; + + if (count < plane_resp->count_planes && + put_user(plane->base.id, plane_ptr + count)) + return -EFAULT; + count++; } - plane_resp->count_planes = num_planes; + plane_resp->count_planes = count; return 0; } diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 1b37368416c8..0b4ac2ebc610 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -429,19 +429,6 @@ struct drm_mode_config { */ struct list_head encoder_list; - /** - * @num_overlay_plane: - * - * Number of overlay planes on this device, excluding primary and cursor - * planes. - * - * Track number of overlay planes separately from number of total - * planes. By default we only advertise overlay planes to userspace; if - * userspace sets the "universal plane" capability bit, we'll go ahead - * and expose all planes. This is invariant over the lifetime of a - * device and hence doesn't need any locks. - */ - int num_overlay_plane; /** * @num_total_plane: *