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@@ -56,6 +56,11 @@ drm_atomic_state_alloc(struct drm_device *dev)
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if (!state)
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return NULL;
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+ /* TODO legacy paths should maybe do a better job about
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+ * setting this appropriately?
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+ */
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+ state->allow_modeset = true;
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+
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state->num_connector = ACCESS_ONCE(dev->mode_config.num_connector);
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state->crtcs = kcalloc(dev->mode_config.num_crtc,
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@@ -216,6 +221,70 @@ drm_atomic_get_crtc_state(struct drm_atomic_state *state,
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}
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EXPORT_SYMBOL(drm_atomic_get_crtc_state);
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+/**
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+ * drm_atomic_crtc_set_property - set property on CRTC
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+ * @crtc: the drm CRTC to set a property on
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+ * @state: the state object to update with the new property value
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+ * @property: the property to set
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+ * @val: the new property value
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+ *
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+ * Use this instead of calling crtc->atomic_set_property directly.
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+ * This function handles generic/core properties and calls out to
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+ * driver's ->atomic_set_property() for driver properties. To ensure
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+ * consistent behavior you must call this function rather than the
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+ * driver hook directly.
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+ *
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+ * RETURNS:
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+ * Zero on success, error code on failure
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+ */
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+int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
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+ struct drm_crtc_state *state, struct drm_property *property,
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+ uint64_t val)
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+{
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+ if (crtc->funcs->atomic_set_property)
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+ return crtc->funcs->atomic_set_property(crtc, state, property, val);
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+ return -EINVAL;
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+}
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+EXPORT_SYMBOL(drm_atomic_crtc_set_property);
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+
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+/*
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+ * This function handles generic/core properties and calls out to
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+ * driver's ->atomic_get_property() for driver properties. To ensure
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+ * consistent behavior you must call this function rather than the
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+ * driver hook directly.
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+ */
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+int drm_atomic_crtc_get_property(struct drm_crtc *crtc,
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+ const struct drm_crtc_state *state,
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+ struct drm_property *property, uint64_t *val)
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+{
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+ if (crtc->funcs->atomic_get_property)
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+ return crtc->funcs->atomic_get_property(crtc, state, property, val);
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+ return -EINVAL;
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+}
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+
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+/**
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+ * drm_atomic_crtc_check - check crtc state
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+ * @crtc: crtc to check
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+ * @state: crtc state to check
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+ *
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+ * Provides core sanity checks for crtc state.
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+ *
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+ * RETURNS:
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+ * Zero on success, error code on failure
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+ */
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+static int drm_atomic_crtc_check(struct drm_crtc *crtc,
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+ struct drm_crtc_state *state)
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+{
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+ /* NOTE: we explicitly don't enforce constraints such as primary
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+ * layer covering entire screen, since that is something we want
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+ * to allow (on hw that supports it). For hw that does not, it
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+ * should be checked in driver's crtc->atomic_check() vfunc.
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+ *
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+ * TODO: Add generic modeset state checks once we support those.
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+ */
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+ return 0;
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+}
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+
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/**
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* drm_atomic_get_plane_state - get plane state
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* @state: global atomic state object
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@@ -271,6 +340,183 @@ drm_atomic_get_plane_state(struct drm_atomic_state *state,
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}
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EXPORT_SYMBOL(drm_atomic_get_plane_state);
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+/**
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+ * drm_atomic_plane_set_property - set property on plane
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+ * @plane: the drm plane to set a property on
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+ * @state: the state object to update with the new property value
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+ * @property: the property to set
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+ * @val: the new property value
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+ *
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+ * Use this instead of calling plane->atomic_set_property directly.
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+ * This function handles generic/core properties and calls out to
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+ * driver's ->atomic_set_property() for driver properties. To ensure
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+ * consistent behavior you must call this function rather than the
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+ * driver hook directly.
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+ *
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+ * RETURNS:
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+ * Zero on success, error code on failure
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+ */
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+int drm_atomic_plane_set_property(struct drm_plane *plane,
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+ struct drm_plane_state *state, struct drm_property *property,
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+ uint64_t val)
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+{
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+ struct drm_device *dev = plane->dev;
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+ struct drm_mode_config *config = &dev->mode_config;
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+
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+ if (property == config->prop_fb_id) {
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+ struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val);
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+ drm_atomic_set_fb_for_plane(state, fb);
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+ if (fb)
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+ drm_framebuffer_unreference(fb);
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+ } else if (property == config->prop_crtc_id) {
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+ struct drm_crtc *crtc = drm_crtc_find(dev, val);
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+ return drm_atomic_set_crtc_for_plane(state, crtc);
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+ } else if (property == config->prop_crtc_x) {
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+ state->crtc_x = U642I64(val);
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+ } else if (property == config->prop_crtc_y) {
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+ state->crtc_y = U642I64(val);
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+ } else if (property == config->prop_crtc_w) {
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+ state->crtc_w = val;
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+ } else if (property == config->prop_crtc_h) {
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+ state->crtc_h = val;
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+ } else if (property == config->prop_src_x) {
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+ state->src_x = val;
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+ } else if (property == config->prop_src_y) {
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+ state->src_y = val;
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+ } else if (property == config->prop_src_w) {
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+ state->src_w = val;
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+ } else if (property == config->prop_src_h) {
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+ state->src_h = val;
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+ } else if (plane->funcs->atomic_set_property) {
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+ return plane->funcs->atomic_set_property(plane, state,
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+ property, val);
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+ } else {
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+EXPORT_SYMBOL(drm_atomic_plane_set_property);
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+
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+/*
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+ * This function handles generic/core properties and calls out to
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+ * driver's ->atomic_get_property() for driver properties. To ensure
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+ * consistent behavior you must call this function rather than the
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+ * driver hook directly.
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+ */
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+static int
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+drm_atomic_plane_get_property(struct drm_plane *plane,
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+ const struct drm_plane_state *state,
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+ struct drm_property *property, uint64_t *val)
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+{
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+ struct drm_device *dev = plane->dev;
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+ struct drm_mode_config *config = &dev->mode_config;
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+
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+ if (property == config->prop_fb_id) {
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+ *val = (state->fb) ? state->fb->base.id : 0;
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+ } else if (property == config->prop_crtc_id) {
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+ *val = (state->crtc) ? state->crtc->base.id : 0;
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+ } else if (property == config->prop_crtc_x) {
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+ *val = I642U64(state->crtc_x);
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+ } else if (property == config->prop_crtc_y) {
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+ *val = I642U64(state->crtc_y);
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+ } else if (property == config->prop_crtc_w) {
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+ *val = state->crtc_w;
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+ } else if (property == config->prop_crtc_h) {
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+ *val = state->crtc_h;
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+ } else if (property == config->prop_src_x) {
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+ *val = state->src_x;
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+ } else if (property == config->prop_src_y) {
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+ *val = state->src_y;
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+ } else if (property == config->prop_src_w) {
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+ *val = state->src_w;
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+ } else if (property == config->prop_src_h) {
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+ *val = state->src_h;
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+ } else if (plane->funcs->atomic_get_property) {
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+ return plane->funcs->atomic_get_property(plane, state, property, val);
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+ } else {
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+
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+/**
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+ * drm_atomic_plane_check - check plane state
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+ * @plane: plane to check
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+ * @state: plane state to check
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+ *
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+ * Provides core sanity checks for plane state.
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+ *
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+ * RETURNS:
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+ * Zero on success, error code on failure
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+ */
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+static int drm_atomic_plane_check(struct drm_plane *plane,
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+ struct drm_plane_state *state)
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+{
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+ unsigned int fb_width, fb_height;
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+ unsigned int i;
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+
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+ /* either *both* CRTC and FB must be set, or neither */
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+ if (WARN_ON(state->crtc && !state->fb)) {
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+ DRM_DEBUG_KMS("CRTC set but no FB\n");
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+ return -EINVAL;
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+ } else if (WARN_ON(state->fb && !state->crtc)) {
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+ DRM_DEBUG_KMS("FB set but no CRTC\n");
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+ return -EINVAL;
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+ }
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+
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+ /* if disabled, we don't care about the rest of the state: */
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+ if (!state->crtc)
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+ return 0;
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+
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+ /* Check whether this plane is usable on this CRTC */
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+ if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
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+ DRM_DEBUG_KMS("Invalid crtc for plane\n");
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+ return -EINVAL;
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+ }
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+
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+ /* Check whether this plane supports the fb pixel format. */
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+ for (i = 0; i < plane->format_count; i++)
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+ if (state->fb->pixel_format == plane->format_types[i])
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+ break;
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+ if (i == plane->format_count) {
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+ DRM_DEBUG_KMS("Invalid pixel format %s\n",
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+ drm_get_format_name(state->fb->pixel_format));
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+ return -EINVAL;
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+ }
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+
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+ /* Give drivers some help against integer overflows */
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+ if (state->crtc_w > INT_MAX ||
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+ state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
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+ state->crtc_h > INT_MAX ||
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+ state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
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+ DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
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+ state->crtc_w, state->crtc_h,
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+ state->crtc_x, state->crtc_y);
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+ return -ERANGE;
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+ }
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+
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+ fb_width = state->fb->width << 16;
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+ fb_height = state->fb->height << 16;
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+
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+ /* Make sure source coordinates are inside the fb. */
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+ if (state->src_w > fb_width ||
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+ state->src_x > fb_width - state->src_w ||
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+ state->src_h > fb_height ||
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+ state->src_y > fb_height - state->src_h) {
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+ DRM_DEBUG_KMS("Invalid source coordinates "
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+ "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
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+ state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
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+ state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
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+ state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
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+ state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10);
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+ return -ENOSPC;
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+ }
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+
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+ return 0;
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+}
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+
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/**
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* drm_atomic_get_connector_state - get connector state
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* @state: global atomic state object
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@@ -342,10 +588,114 @@ drm_atomic_get_connector_state(struct drm_atomic_state *state,
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}
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EXPORT_SYMBOL(drm_atomic_get_connector_state);
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+/**
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+ * drm_atomic_connector_set_property - set property on connector.
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+ * @connector: the drm connector to set a property on
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+ * @state: the state object to update with the new property value
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+ * @property: the property to set
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+ * @val: the new property value
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+ *
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+ * Use this instead of calling connector->atomic_set_property directly.
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+ * This function handles generic/core properties and calls out to
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+ * driver's ->atomic_set_property() for driver properties. To ensure
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+ * consistent behavior you must call this function rather than the
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+ * driver hook directly.
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+ *
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+ * RETURNS:
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+ * Zero on success, error code on failure
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+ */
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+int drm_atomic_connector_set_property(struct drm_connector *connector,
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+ struct drm_connector_state *state, struct drm_property *property,
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+ uint64_t val)
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+{
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+ struct drm_device *dev = connector->dev;
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+ struct drm_mode_config *config = &dev->mode_config;
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+
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+ if (property == config->prop_crtc_id) {
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+ struct drm_crtc *crtc = drm_crtc_find(dev, val);
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+ return drm_atomic_set_crtc_for_connector(state, crtc);
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+ } else if (property == config->dpms_property) {
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+ /* setting DPMS property requires special handling, which
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+ * is done in legacy setprop path for us. Disallow (for
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+ * now?) atomic writes to DPMS property:
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+ */
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+ return -EINVAL;
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+ } else if (connector->funcs->atomic_set_property) {
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+ return connector->funcs->atomic_set_property(connector,
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+ state, property, val);
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+ } else {
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+ return -EINVAL;
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+ }
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+}
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+EXPORT_SYMBOL(drm_atomic_connector_set_property);
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+
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+/*
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+ * This function handles generic/core properties and calls out to
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+ * driver's ->atomic_get_property() for driver properties. To ensure
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+ * consistent behavior you must call this function rather than the
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+ * driver hook directly.
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+ */
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+static int
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+drm_atomic_connector_get_property(struct drm_connector *connector,
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+ const struct drm_connector_state *state,
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+ struct drm_property *property, uint64_t *val)
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+{
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+ struct drm_device *dev = connector->dev;
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+ struct drm_mode_config *config = &dev->mode_config;
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+
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+ if (property == config->prop_crtc_id) {
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+ *val = (state->crtc) ? state->crtc->base.id : 0;
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+ } else if (property == config->dpms_property) {
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+ *val = connector->dpms;
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+ } else if (connector->funcs->atomic_get_property) {
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+ return connector->funcs->atomic_get_property(connector,
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+ state, property, val);
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+ } else {
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+
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+int drm_atomic_get_property(struct drm_mode_object *obj,
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+ struct drm_property *property, uint64_t *val)
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+{
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+ struct drm_device *dev = property->dev;
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+ int ret;
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+
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+ switch (obj->type) {
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+ case DRM_MODE_OBJECT_CONNECTOR: {
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+ struct drm_connector *connector = obj_to_connector(obj);
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+ WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
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+ ret = drm_atomic_connector_get_property(connector,
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+ connector->state, property, val);
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+ break;
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+ }
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+ case DRM_MODE_OBJECT_CRTC: {
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+ struct drm_crtc *crtc = obj_to_crtc(obj);
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+ WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
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+ ret = drm_atomic_crtc_get_property(crtc,
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+ crtc->state, property, val);
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+ break;
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+ }
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+ case DRM_MODE_OBJECT_PLANE: {
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+ struct drm_plane *plane = obj_to_plane(obj);
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+ WARN_ON(!drm_modeset_is_locked(&plane->mutex));
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+ ret = drm_atomic_plane_get_property(plane,
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+ plane->state, property, val);
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+ break;
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+ }
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+ default:
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+ ret = -EINVAL;
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+ break;
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+ }
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+
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+ return ret;
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+}
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+
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/**
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* drm_atomic_set_crtc_for_plane - set crtc for plane
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- * @state: the incoming atomic state
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- * @plane: the plane whose incoming state to update
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+ * @plane_state: the plane whose incoming state to update
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* @crtc: crtc to use for the plane
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*
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* Changing the assigned crtc for a plane requires us to grab the lock and state
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|
|
@@ -358,16 +708,12 @@ EXPORT_SYMBOL(drm_atomic_get_connector_state);
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* sequence must be restarted. All other errors are fatal.
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*/
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|
|
int
|
|
|
-drm_atomic_set_crtc_for_plane(struct drm_atomic_state *state,
|
|
|
- struct drm_plane *plane, struct drm_crtc *crtc)
|
|
|
+drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
|
|
|
+ struct drm_crtc *crtc)
|
|
|
{
|
|
|
- struct drm_plane_state *plane_state =
|
|
|
- drm_atomic_get_plane_state(state, plane);
|
|
|
+ struct drm_plane *plane = plane_state->plane;
|
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
|
|
- if (WARN_ON(IS_ERR(plane_state)))
|
|
|
- return PTR_ERR(plane_state);
|
|
|
-
|
|
|
if (plane_state->crtc) {
|
|
|
crtc_state = drm_atomic_get_crtc_state(plane_state->state,
|
|
|
plane_state->crtc);
|
|
|
@@ -583,14 +929,62 @@ EXPORT_SYMBOL(drm_atomic_legacy_backoff);
|
|
|
*/
|
|
|
int drm_atomic_check_only(struct drm_atomic_state *state)
|
|
|
{
|
|
|
- struct drm_mode_config *config = &state->dev->mode_config;
|
|
|
+ struct drm_device *dev = state->dev;
|
|
|
+ struct drm_mode_config *config = &dev->mode_config;
|
|
|
+ int nplanes = config->num_total_plane;
|
|
|
+ int ncrtcs = config->num_crtc;
|
|
|
+ int i, ret = 0;
|
|
|
|
|
|
DRM_DEBUG_KMS("checking %p\n", state);
|
|
|
|
|
|
+ for (i = 0; i < nplanes; i++) {
|
|
|
+ struct drm_plane *plane = state->planes[i];
|
|
|
+
|
|
|
+ if (!plane)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ ret = drm_atomic_plane_check(plane, state->plane_states[i]);
|
|
|
+ if (ret) {
|
|
|
+ DRM_DEBUG_KMS("[PLANE:%d] atomic core check failed\n",
|
|
|
+ plane->base.id);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0; i < ncrtcs; i++) {
|
|
|
+ struct drm_crtc *crtc = state->crtcs[i];
|
|
|
+
|
|
|
+ if (!crtc)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ ret = drm_atomic_crtc_check(crtc, state->crtc_states[i]);
|
|
|
+ if (ret) {
|
|
|
+ DRM_DEBUG_KMS("[CRTC:%d] atomic core check failed\n",
|
|
|
+ crtc->base.id);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
if (config->funcs->atomic_check)
|
|
|
- return config->funcs->atomic_check(state->dev, state);
|
|
|
- else
|
|
|
- return 0;
|
|
|
+ ret = config->funcs->atomic_check(state->dev, state);
|
|
|
+
|
|
|
+ if (!state->allow_modeset) {
|
|
|
+ for (i = 0; i < ncrtcs; i++) {
|
|
|
+ struct drm_crtc *crtc = state->crtcs[i];
|
|
|
+ struct drm_crtc_state *crtc_state = state->crtc_states[i];
|
|
|
+
|
|
|
+ if (!crtc)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ if (crtc_state->mode_changed) {
|
|
|
+ DRM_DEBUG_KMS("[CRTC:%d] requires full modeset\n",
|
|
|
+ crtc->base.id);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
}
|
|
|
EXPORT_SYMBOL(drm_atomic_check_only);
|
|
|
|
|
|
@@ -655,3 +1049,313 @@ int drm_atomic_async_commit(struct drm_atomic_state *state)
|
|
|
return config->funcs->atomic_commit(state->dev, state, true);
|
|
|
}
|
|
|
EXPORT_SYMBOL(drm_atomic_async_commit);
|
|
|
+
|
|
|
+/*
|
|
|
+ * The big monstor ioctl
|
|
|
+ */
|
|
|
+
|
|
|
+static struct drm_pending_vblank_event *create_vblank_event(
|
|
|
+ struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data)
|
|
|
+{
|
|
|
+ struct drm_pending_vblank_event *e = NULL;
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ spin_lock_irqsave(&dev->event_lock, flags);
|
|
|
+ if (file_priv->event_space < sizeof e->event) {
|
|
|
+ spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+ file_priv->event_space -= sizeof e->event;
|
|
|
+ spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
+
|
|
|
+ e = kzalloc(sizeof *e, GFP_KERNEL);
|
|
|
+ if (e == NULL) {
|
|
|
+ spin_lock_irqsave(&dev->event_lock, flags);
|
|
|
+ file_priv->event_space += sizeof e->event;
|
|
|
+ spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
|
|
|
+ e->event.base.length = sizeof e->event;
|
|
|
+ e->event.user_data = user_data;
|
|
|
+ e->base.event = &e->event.base;
|
|
|
+ e->base.file_priv = file_priv;
|
|
|
+ e->base.destroy = (void (*) (struct drm_pending_event *)) kfree;
|
|
|
+
|
|
|
+out:
|
|
|
+ return e;
|
|
|
+}
|
|
|
+
|
|
|
+static void destroy_vblank_event(struct drm_device *dev,
|
|
|
+ struct drm_file *file_priv, struct drm_pending_vblank_event *e)
|
|
|
+{
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ spin_lock_irqsave(&dev->event_lock, flags);
|
|
|
+ file_priv->event_space += sizeof e->event;
|
|
|
+ spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
+ kfree(e);
|
|
|
+}
|
|
|
+
|
|
|
+static int atomic_set_prop(struct drm_atomic_state *state,
|
|
|
+ struct drm_mode_object *obj, struct drm_property *prop,
|
|
|
+ uint64_t prop_value)
|
|
|
+{
|
|
|
+ struct drm_mode_object *ref;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ if (!drm_property_change_valid_get(prop, prop_value, &ref))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ switch (obj->type) {
|
|
|
+ case DRM_MODE_OBJECT_CONNECTOR: {
|
|
|
+ struct drm_connector *connector = obj_to_connector(obj);
|
|
|
+ struct drm_connector_state *connector_state;
|
|
|
+
|
|
|
+ connector_state = drm_atomic_get_connector_state(state, connector);
|
|
|
+ if (IS_ERR(connector_state)) {
|
|
|
+ ret = PTR_ERR(connector_state);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = drm_atomic_connector_set_property(connector,
|
|
|
+ connector_state, prop, prop_value);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case DRM_MODE_OBJECT_CRTC: {
|
|
|
+ struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
|
+ struct drm_crtc_state *crtc_state;
|
|
|
+
|
|
|
+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
|
+ if (IS_ERR(crtc_state)) {
|
|
|
+ ret = PTR_ERR(crtc_state);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = drm_atomic_crtc_set_property(crtc,
|
|
|
+ crtc_state, prop, prop_value);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case DRM_MODE_OBJECT_PLANE: {
|
|
|
+ struct drm_plane *plane = obj_to_plane(obj);
|
|
|
+ struct drm_plane_state *plane_state;
|
|
|
+
|
|
|
+ plane_state = drm_atomic_get_plane_state(state, plane);
|
|
|
+ if (IS_ERR(plane_state)) {
|
|
|
+ ret = PTR_ERR(plane_state);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = drm_atomic_plane_set_property(plane,
|
|
|
+ plane_state, prop, prop_value);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ default:
|
|
|
+ ret = -EINVAL;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ drm_property_change_valid_put(prop, ref);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+int drm_mode_atomic_ioctl(struct drm_device *dev,
|
|
|
+ void *data, struct drm_file *file_priv)
|
|
|
+{
|
|
|
+ struct drm_mode_atomic *arg = data;
|
|
|
+ uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
|
|
|
+ uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
|
|
|
+ uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
|
|
|
+ uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
|
|
|
+ unsigned int copied_objs, copied_props;
|
|
|
+ struct drm_atomic_state *state;
|
|
|
+ struct drm_modeset_acquire_ctx ctx;
|
|
|
+ struct drm_plane *plane;
|
|
|
+ unsigned plane_mask = 0;
|
|
|
+ int ret = 0;
|
|
|
+ unsigned int i, j;
|
|
|
+
|
|
|
+ /* disallow for drivers not supporting atomic: */
|
|
|
+ if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ /* disallow for userspace that has not enabled atomic cap (even
|
|
|
+ * though this may be a bit overkill, since legacy userspace
|
|
|
+ * wouldn't know how to call this ioctl)
|
|
|
+ */
|
|
|
+ if (!file_priv->atomic)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if (arg->reserved)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
|
|
|
+ !dev->mode_config.async_page_flip)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ /* can't test and expect an event at the same time. */
|
|
|
+ if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
|
|
|
+ (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ drm_modeset_acquire_init(&ctx, 0);
|
|
|
+
|
|
|
+ state = drm_atomic_state_alloc(dev);
|
|
|
+ if (!state)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ state->acquire_ctx = &ctx;
|
|
|
+ state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
|
|
|
+
|
|
|
+retry:
|
|
|
+ copied_objs = 0;
|
|
|
+ copied_props = 0;
|
|
|
+
|
|
|
+ for (i = 0; i < arg->count_objs; i++) {
|
|
|
+ uint32_t obj_id, count_props;
|
|
|
+ struct drm_mode_object *obj;
|
|
|
+
|
|
|
+ if (get_user(obj_id, objs_ptr + copied_objs)) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY);
|
|
|
+ if (!obj || !obj->properties) {
|
|
|
+ ret = -ENOENT;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (obj->type == DRM_MODE_OBJECT_PLANE) {
|
|
|
+ plane = obj_to_plane(obj);
|
|
|
+ plane_mask |= (1 << drm_plane_index(plane));
|
|
|
+ plane->old_fb = plane->fb;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (get_user(count_props, count_props_ptr + copied_objs)) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ copied_objs++;
|
|
|
+
|
|
|
+ for (j = 0; j < count_props; j++) {
|
|
|
+ uint32_t prop_id;
|
|
|
+ uint64_t prop_value;
|
|
|
+ struct drm_property *prop;
|
|
|
+
|
|
|
+ if (get_user(prop_id, props_ptr + copied_props)) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ prop = drm_property_find(dev, prop_id);
|
|
|
+ if (!prop) {
|
|
|
+ ret = -ENOENT;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (get_user(prop_value, prop_values_ptr + copied_props)) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = atomic_set_prop(state, obj, prop, prop_value);
|
|
|
+ if (ret)
|
|
|
+ goto fail;
|
|
|
+
|
|
|
+ copied_props++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
|
+ int ncrtcs = dev->mode_config.num_crtc;
|
|
|
+
|
|
|
+ for (i = 0; i < ncrtcs; i++) {
|
|
|
+ struct drm_crtc_state *crtc_state = state->crtc_states[i];
|
|
|
+ struct drm_pending_vblank_event *e;
|
|
|
+
|
|
|
+ if (!crtc_state)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ e = create_vblank_event(dev, file_priv, arg->user_data);
|
|
|
+ if (!e) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto fail;
|
|
|
+ }
|
|
|
+
|
|
|
+ crtc_state->event = e;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
|
|
|
+ ret = drm_atomic_check_only(state);
|
|
|
+ /* _check_only() does not free state, unlike _commit() */
|
|
|
+ drm_atomic_state_free(state);
|
|
|
+ } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
|
|
|
+ ret = drm_atomic_async_commit(state);
|
|
|
+ } else {
|
|
|
+ ret = drm_atomic_commit(state);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
|
|
|
+ * locks (ie. while it is still safe to deref plane->state). We
|
|
|
+ * need to do this here because the driver entry points cannot
|
|
|
+ * distinguish between legacy and atomic ioctls.
|
|
|
+ */
|
|
|
+ drm_for_each_plane_mask(plane, dev, plane_mask) {
|
|
|
+ if (ret == 0) {
|
|
|
+ struct drm_framebuffer *new_fb = plane->state->fb;
|
|
|
+ if (new_fb)
|
|
|
+ drm_framebuffer_reference(new_fb);
|
|
|
+ plane->fb = new_fb;
|
|
|
+ plane->crtc = plane->state->crtc;
|
|
|
+ } else {
|
|
|
+ plane->old_fb = NULL;
|
|
|
+ }
|
|
|
+ if (plane->old_fb) {
|
|
|
+ drm_framebuffer_unreference(plane->old_fb);
|
|
|
+ plane->old_fb = NULL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ drm_modeset_drop_locks(&ctx);
|
|
|
+ drm_modeset_acquire_fini(&ctx);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+
|
|
|
+fail:
|
|
|
+ if (ret == -EDEADLK)
|
|
|
+ goto backoff;
|
|
|
+
|
|
|
+ if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
|
+ int ncrtcs = dev->mode_config.num_crtc;
|
|
|
+
|
|
|
+ for (i = 0; i < ncrtcs; i++) {
|
|
|
+ struct drm_crtc_state *crtc_state = state->crtc_states[i];
|
|
|
+
|
|
|
+ if (!crtc_state)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ destroy_vblank_event(dev, file_priv, crtc_state->event);
|
|
|
+ crtc_state->event = NULL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ drm_atomic_state_free(state);
|
|
|
+
|
|
|
+ drm_modeset_drop_locks(&ctx);
|
|
|
+ drm_modeset_acquire_fini(&ctx);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+
|
|
|
+backoff:
|
|
|
+ drm_atomic_state_clear(state);
|
|
|
+ drm_modeset_backoff(&ctx);
|
|
|
+
|
|
|
+ goto retry;
|
|
|
+}
|
Dave Airlie