Make the connector is_implicit property immutable.
As far as we know, no user-space application is writing to it.
Also move the verification that all implicit display units scan out
from the same framebuffer to atomic_check().
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
struct vmw_overlay *overlay_priv;
struct drm_property *hotplug_mode_update_property;
struct drm_property *implicit_placement_property;
- unsigned num_implicit;
- struct vmw_framebuffer *implicit_fb;
struct mutex global_kms_state_mutex;
spinlock_t cursor_lock;
struct drm_atomic_state *suspend_state;
struct drm_crtc *crtc = state->crtc;
struct vmw_connector_state *vcs;
struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
- struct vmw_private *dev_priv = vmw_priv(crtc->dev);
- struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
vcs = vmw_connector_state_to_vcs(du->connector.state);
-
- /* Only one active implicit framebuffer at a time. */
- mutex_lock(&dev_priv->global_kms_state_mutex);
- if (vcs->is_implicit && dev_priv->implicit_fb &&
- !(dev_priv->num_implicit == 1 && du->active_implicit)
- && dev_priv->implicit_fb != vfb) {
- DRM_ERROR("Multiple implicit framebuffers "
- "not supported.\n");
- ret = -EINVAL;
- }
- mutex_unlock(&dev_priv->global_kms_state_mutex);
}
}
/**
+ * vmw_crtc_state_and_lock - Return new or current crtc state with locked
+ * crtc mutex
+ * @state: The atomic state pointer containing the new atomic state
+ * @crtc: The crtc
+ *
+ * This function returns the new crtc state if it's part of the state update.
+ * Otherwise returns the current crtc state. It also makes sure that the
+ * crtc mutex is locked.
+ *
+ * Returns: A valid crtc state pointer or NULL. It may also return a
+ * pointer error, in particular -EDEADLK if locking needs to be rerun.
+ */
+static struct drm_crtc_state *
+vmw_crtc_state_and_lock(struct drm_atomic_state *state, struct drm_crtc *crtc)
+{
+ struct drm_crtc_state *crtc_state;
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ if (crtc_state) {
+ lockdep_assert_held(&crtc->mutex.mutex.base);
+ } else {
+ int ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
+
+ if (ret != 0 && ret != -EALREADY)
+ return ERR_PTR(ret);
+
+ crtc_state = crtc->state;
+ }
+
+ return crtc_state;
+}
+
+/**
+ * vmw_kms_check_implicit - Verify that all implicit display units scan out
+ * from the same fb after the new state is committed.
+ * @dev: The drm_device.
+ * @state: The new state to be checked.
+ *
+ * Returns:
+ * Zero on success,
+ * -EINVAL on invalid state,
+ * -EDEADLK if modeset locking needs to be rerun.
+ */
+static int vmw_kms_check_implicit(struct drm_device *dev,
+ struct drm_atomic_state *state)
+{
+ struct drm_framebuffer *implicit_fb = NULL;
+ struct drm_crtc *crtc;
+ struct drm_crtc_state *crtc_state;
+ struct drm_plane_state *plane_state;
+
+ drm_for_each_crtc(crtc, dev) {
+ struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
+
+ if (!du->is_implicit)
+ continue;
+
+ crtc_state = vmw_crtc_state_and_lock(state, crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
+
+ if (!crtc_state || !crtc_state->enable)
+ continue;
+
+ /*
+ * Can't move primary planes across crtcs, so this is OK.
+ * It also means we don't need to take the plane mutex.
+ */
+ plane_state = du->primary.state;
+ if (plane_state->crtc != crtc)
+ continue;
+
+ if (!implicit_fb)
+ implicit_fb = plane_state->fb;
+ else if (implicit_fb != plane_state->fb)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
* vmw_kms_check_topology - Validates topology in drm_atomic_state
* @dev: DRM device
* @state: the driver state object
if (ret)
return ret;
+ ret = vmw_kms_check_implicit(dev, state);
+ if (ret)
+ return ret;
+
if (!state->allow_modeset)
return ret;
return 1;
}
-int vmw_du_connector_set_property(struct drm_connector *connector,
- struct drm_property *property,
- uint64_t val)
-{
- struct vmw_display_unit *du = vmw_connector_to_du(connector);
- struct vmw_private *dev_priv = vmw_priv(connector->dev);
-
- if (property == dev_priv->implicit_placement_property)
- du->is_implicit = val;
-
- return 0;
-}
-
-
-
-/**
- * vmw_du_connector_atomic_set_property - Atomic version of get property
- *
- * @crtc - crtc the property is associated with
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int
-vmw_du_connector_atomic_set_property(struct drm_connector *connector,
- struct drm_connector_state *state,
- struct drm_property *property,
- uint64_t val)
-{
- struct vmw_private *dev_priv = vmw_priv(connector->dev);
- struct vmw_connector_state *vcs = vmw_connector_state_to_vcs(state);
- struct vmw_display_unit *du = vmw_connector_to_du(connector);
-
-
- if (property == dev_priv->implicit_placement_property) {
- vcs->is_implicit = val;
-
- /*
- * We should really be doing a drm_atomic_commit() to
- * commit the new state, but since this doesn't cause
- * an immedate state change, this is probably ok
- */
- du->is_implicit = vcs->is_implicit;
- } else {
- return -EINVAL;
- }
-
- return 0;
-}
-
-
-/**
- * vmw_du_connector_atomic_get_property - Atomic version of get property
- *
- * @connector - connector the property is associated with
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int
-vmw_du_connector_atomic_get_property(struct drm_connector *connector,
- const struct drm_connector_state *state,
- struct drm_property *property,
- uint64_t *val)
-{
- struct vmw_private *dev_priv = vmw_priv(connector->dev);
- struct vmw_connector_state *vcs = vmw_connector_state_to_vcs(state);
-
- if (property == dev_priv->implicit_placement_property)
- *val = vcs->is_implicit;
- else {
- DRM_ERROR("Invalid Property %s\n", property->name);
- return -EINVAL;
- }
-
- return 0;
-}
-
/**
* vmw_kms_update_layout_ioctl - Handler for DRM_VMW_UPDATE_LAYOUT ioctl
* @dev: drm device for the ioctl
}
/**
- * vmw_kms_del_active - unregister a crtc binding to the implicit framebuffer
- *
- * @dev_priv: Pointer to a device private struct.
- * @du: The display unit of the crtc.
- */
-void vmw_kms_del_active(struct vmw_private *dev_priv,
- struct vmw_display_unit *du)
-{
- mutex_lock(&dev_priv->global_kms_state_mutex);
- if (du->active_implicit) {
- if (--(dev_priv->num_implicit) == 0)
- dev_priv->implicit_fb = NULL;
- du->active_implicit = false;
- }
- mutex_unlock(&dev_priv->global_kms_state_mutex);
-}
-
-/**
- * vmw_kms_add_active - register a crtc binding to an implicit framebuffer
- *
- * @vmw_priv: Pointer to a device private struct.
- * @du: The display unit of the crtc.
- * @vfb: The implicit framebuffer
- *
- * Registers a binding to an implicit framebuffer.
- */
-void vmw_kms_add_active(struct vmw_private *dev_priv,
- struct vmw_display_unit *du,
- struct vmw_framebuffer *vfb)
-{
- mutex_lock(&dev_priv->global_kms_state_mutex);
- WARN_ON_ONCE(!dev_priv->num_implicit && dev_priv->implicit_fb);
-
- if (!du->active_implicit && du->is_implicit) {
- dev_priv->implicit_fb = vfb;
- du->active_implicit = true;
- dev_priv->num_implicit++;
- }
- mutex_unlock(&dev_priv->global_kms_state_mutex);
-}
-
-/**
- * vmw_kms_screen_object_flippable - Check whether we can page-flip a crtc.
- *
- * @dev_priv: Pointer to device-private struct.
- * @crtc: The crtc we want to flip.
- *
- * Returns true or false depending whether it's OK to flip this crtc
- * based on the criterion that we must not have more than one implicit
- * frame-buffer at any one time.
- */
-bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
- struct drm_crtc *crtc)
-{
- struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
- bool ret;
-
- mutex_lock(&dev_priv->global_kms_state_mutex);
- ret = !du->is_implicit || dev_priv->num_implicit == 1;
- mutex_unlock(&dev_priv->global_kms_state_mutex);
-
- return ret;
-}
-
-/**
- * vmw_kms_update_implicit_fb - Update the implicit fb.
- *
- * @dev_priv: Pointer to device-private struct.
- * @crtc: The crtc the new implicit frame-buffer is bound to.
- */
-void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
- struct drm_crtc *crtc)
-{
- struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
- struct drm_plane *plane = crtc->primary;
- struct vmw_framebuffer *vfb;
-
- mutex_lock(&dev_priv->global_kms_state_mutex);
-
- if (!du->is_implicit)
- goto out_unlock;
-
- vfb = vmw_framebuffer_to_vfb(plane->state->fb);
- WARN_ON_ONCE(dev_priv->num_implicit != 1 &&
- dev_priv->implicit_fb != vfb);
-
- dev_priv->implicit_fb = vfb;
-out_unlock:
- mutex_unlock(&dev_priv->global_kms_state_mutex);
-}
-
-/**
* vmw_kms_create_implicit_placement_proparty - Set up the implicit placement
* property.
*
* @dev_priv: Pointer to a device private struct.
- * @immutable: Whether the property is immutable.
*
* Sets up the implicit placement property unless it's already set up.
*/
void
-vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
- bool immutable)
+vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv)
{
if (dev_priv->implicit_placement_property)
return;
dev_priv->implicit_placement_property =
drm_property_create_range(dev_priv->dev,
- immutable ?
- DRM_MODE_PROP_IMMUTABLE : 0,
+ DRM_MODE_PROP_IMMUTABLE,
"implicit_placement", 0, 1);
-
}
/**
struct vmw_connector_state {
struct drm_connector_state base;
- bool is_implicit;
-
/**
* @gui_x:
*
int gui_x;
int gui_y;
bool is_implicit;
- bool active_implicit;
int set_gui_x;
int set_gui_y;
};
struct drm_crtc **p_crtc,
struct drm_display_mode **p_mode);
void vmw_guess_mode_timing(struct drm_display_mode *mode);
-void vmw_kms_del_active(struct vmw_private *dev_priv,
- struct vmw_display_unit *du);
-void vmw_kms_add_active(struct vmw_private *dev_priv,
- struct vmw_display_unit *du,
- struct vmw_framebuffer *vfb);
-bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
- struct drm_crtc *crtc);
-void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
- struct drm_crtc *crtc);
-void vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
- bool immutable);
+void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv);
+void vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv);
/* Universal Plane Helpers */
void vmw_du_primary_plane_destroy(struct drm_plane *plane);
.dpms = vmw_du_connector_dpms,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
- .set_property = vmw_du_connector_set_property,
.destroy = vmw_ldu_connector_destroy,
.reset = vmw_du_connector_reset,
.atomic_duplicate_state = vmw_du_connector_duplicate_state,
.atomic_destroy_state = vmw_du_connector_destroy_state,
- .atomic_set_property = vmw_du_connector_atomic_set_property,
- .atomic_get_property = vmw_du_connector_atomic_get_property,
};
static const struct
drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);
-
vmw_du_connector_reset(connector);
ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
connector->status = vmw_du_connector_detect(connector, true);
- vmw_connector_state_to_vcs(connector->state)->is_implicit = true;
-
ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
goto err_free_encoder;
}
-
vmw_du_crtc_reset(crtc);
ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
&ldu->base.cursor,
if (ret != 0)
goto err_free;
- vmw_kms_create_implicit_placement_property(dev_priv, true);
+ vmw_kms_create_implicit_placement_property(dev_priv);
if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
sou->buffer = vps->bo;
sou->buffer_size = vps->bo_size;
- if (sou->base.is_implicit) {
- x = crtc->x;
- y = crtc->y;
- } else {
- conn_state = sou->base.connector.state;
- vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
-
- x = vmw_conn_state->gui_x;
- y = vmw_conn_state->gui_y;
- }
+ conn_state = sou->base.connector.state;
+ vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
+
+ x = vmw_conn_state->gui_x;
+ y = vmw_conn_state->gui_y;
ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
if (ret)
DRM_ERROR("Failed to define Screen Object %dx%d\n",
crtc->x, crtc->y);
- vmw_kms_add_active(dev_priv, &sou->base, vfb);
} else {
sou->buffer = NULL;
sou->buffer_size = 0;
-
- vmw_kms_del_active(dev_priv, &sou->base);
}
}
uint32_t flags,
struct drm_modeset_acquire_ctx *ctx)
{
- struct vmw_private *dev_priv = vmw_priv(crtc->dev);
int ret;
- if (!vmw_kms_crtc_flippable(dev_priv, crtc))
- return -EINVAL;
-
ret = drm_atomic_helper_page_flip(crtc, new_fb, event, flags, ctx);
if (ret) {
DRM_ERROR("Page flip error %d.\n", ret);
return ret;
}
- if (vmw_crtc_to_du(crtc)->is_implicit)
- vmw_kms_update_implicit_fb(dev_priv, crtc);
-
return ret;
}
.dpms = vmw_du_connector_dpms,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
- .set_property = vmw_du_connector_set_property,
.destroy = vmw_sou_connector_destroy,
.reset = vmw_du_connector_reset,
.atomic_duplicate_state = vmw_du_connector_duplicate_state,
.atomic_destroy_state = vmw_du_connector_destroy_state,
- .atomic_set_property = vmw_du_connector_atomic_set_property,
- .atomic_get_property = vmw_du_connector_atomic_get_property,
};
primary = &sou->base.primary;
cursor = &sou->base.cursor;
- sou->base.active_implicit = false;
sou->base.pref_active = (unit == 0);
sou->base.pref_width = dev_priv->initial_width;
sou->base.pref_height = dev_priv->initial_height;
drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs);
connector->status = vmw_du_connector_detect(connector, true);
- vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
-
ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
dev->mode_config.suggested_x_property, 0);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_y_property, 0);
- if (dev_priv->implicit_placement_property)
- drm_object_attach_property
- (&connector->base,
- dev_priv->implicit_placement_property,
- sou->base.is_implicit);
-
return 0;
err_free_unregister:
}
ret = -ENOMEM;
- dev_priv->num_implicit = 0;
- dev_priv->implicit_fb = NULL;
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
if (unlikely(ret != 0))
return ret;
- vmw_kms_create_implicit_placement_property(dev_priv, false);
-
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
vmw_sou_init(dev_priv, i);
if (!crtc->state->enable)
return;
- if (stdu->base.is_implicit) {
- x = crtc->x;
- y = crtc->y;
- } else {
- x = vmw_conn_state->gui_x;
- y = vmw_conn_state->gui_y;
- }
+ x = vmw_conn_state->gui_x;
+ y = vmw_conn_state->gui_y;
vmw_svga_enable(dev_priv);
ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, x, y);
{
}
-
static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
- struct drm_plane_state *plane_state = crtc->primary->state;
- struct vmw_private *dev_priv;
- struct vmw_screen_target_display_unit *stdu;
- struct vmw_framebuffer *vfb;
- struct drm_framebuffer *fb;
-
-
- stdu = vmw_crtc_to_stdu(crtc);
- dev_priv = vmw_priv(crtc->dev);
- fb = plane_state->fb;
-
- vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
-
- if (vfb)
- vmw_kms_add_active(dev_priv, &stdu->base, vfb);
- else
- vmw_kms_del_active(dev_priv, &stdu->base);
}
static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_modeset_acquire_ctx *ctx)
{
- struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
int ret;
- if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
+ if (!stdu->defined)
return -EINVAL;
ret = drm_atomic_helper_page_flip(crtc, new_fb, event, flags, ctx);
.dpms = vmw_du_connector_dpms,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
- .set_property = vmw_du_connector_set_property,
.destroy = vmw_stdu_connector_destroy,
.reset = vmw_du_connector_reset,
.atomic_duplicate_state = vmw_du_connector_duplicate_state,
.atomic_destroy_state = vmw_du_connector_destroy_state,
- .atomic_set_property = vmw_du_connector_atomic_set_property,
- .atomic_get_property = vmw_du_connector_atomic_get_property,
};
stdu->base.pref_active = (unit == 0);
stdu->base.pref_width = dev_priv->initial_width;
stdu->base.pref_height = dev_priv->initial_height;
-
- /*
- * Remove this after enabling atomic because property values can
- * only exist in a state object
- */
stdu->base.is_implicit = false;
/* Initialize primary plane */
drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
connector->status = vmw_du_connector_detect(connector, false);
- vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
dev->mode_config.suggested_x_property, 0);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_y_property, 0);
- if (dev_priv->implicit_placement_property)
- drm_object_attach_property
- (&connector->base,
- dev_priv->implicit_placement_property,
- stdu->base.is_implicit);
return 0;
err_free_unregister:
dev_priv->active_display_unit = vmw_du_screen_target;
- vmw_kms_create_implicit_placement_property(dev_priv, false);
-
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
ret = vmw_stdu_init(dev_priv, i);
projects / platform / kernel / linux-starfive.git / commitdiff