v4.19.13 snapshot.
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
new file mode 100644
index 0000000..6153cbd
--- /dev/null
+++ b/drivers/gpu/drm/drm_plane.c
@@ -0,0 +1,1192 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_plane.h>
+
+#include "drm_crtc_internal.h"
+
+/**
+ * DOC: overview
+ *
+ * A plane represents an image source that can be blended with or overlayed on
+ * top of a CRTC during the scanout process. Planes take their input data from a
+ * &drm_framebuffer object. The plane itself specifies the cropping and scaling
+ * of that image, and where it is placed on the visible are of a display
+ * pipeline, represented by &drm_crtc. A plane can also have additional
+ * properties that specify how the pixels are positioned and blended, like
+ * rotation or Z-position. All these properties are stored in &drm_plane_state.
+ *
+ * To create a plane, a KMS drivers allocates and zeroes an instances of
+ * &struct drm_plane (possibly as part of a larger structure) and registers it
+ * with a call to drm_universal_plane_init().
+ *
+ * Cursor and overlay planes are optional. All drivers should provide one
+ * primary plane per CRTC to avoid surprising userspace too much. See enum
+ * drm_plane_type for a more in-depth discussion of these special uapi-relevant
+ * plane types. Special planes are associated with their CRTC by calling
+ * drm_crtc_init_with_planes().
+ *
+ * The type of a plane is exposed in the immutable "type" enumeration property,
+ * which has one of the following values: "Overlay", "Primary", "Cursor".
+ */
+
+static unsigned int drm_num_planes(struct drm_device *dev)
+{
+ unsigned int num = 0;
+ struct drm_plane *tmp;
+
+ drm_for_each_plane(tmp, dev) {
+ num++;
+ }
+
+ return num;
+}
+
+static inline u32 *
+formats_ptr(struct drm_format_modifier_blob *blob)
+{
+ return (u32 *)(((char *)blob) + blob->formats_offset);
+}
+
+static inline struct drm_format_modifier *
+modifiers_ptr(struct drm_format_modifier_blob *blob)
+{
+ return (struct drm_format_modifier *)(((char *)blob) + blob->modifiers_offset);
+}
+
+static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane)
+{
+ const struct drm_mode_config *config = &dev->mode_config;
+ struct drm_property_blob *blob;
+ struct drm_format_modifier *mod;
+ size_t blob_size, formats_size, modifiers_size;
+ struct drm_format_modifier_blob *blob_data;
+ unsigned int i, j;
+
+ formats_size = sizeof(__u32) * plane->format_count;
+ if (WARN_ON(!formats_size)) {
+ /* 0 formats are never expected */
+ return 0;
+ }
+
+ modifiers_size =
+ sizeof(struct drm_format_modifier) * plane->modifier_count;
+
+ blob_size = sizeof(struct drm_format_modifier_blob);
+ /* Modifiers offset is a pointer to a struct with a 64 bit field so it
+ * should be naturally aligned to 8B.
+ */
+ BUILD_BUG_ON(sizeof(struct drm_format_modifier_blob) % 8);
+ blob_size += ALIGN(formats_size, 8);
+ blob_size += modifiers_size;
+
+ blob = drm_property_create_blob(dev, blob_size, NULL);
+ if (IS_ERR(blob))
+ return -1;
+
+ blob_data = blob->data;
+ blob_data->version = FORMAT_BLOB_CURRENT;
+ blob_data->count_formats = plane->format_count;
+ blob_data->formats_offset = sizeof(struct drm_format_modifier_blob);
+ blob_data->count_modifiers = plane->modifier_count;
+
+ blob_data->modifiers_offset =
+ ALIGN(blob_data->formats_offset + formats_size, 8);
+
+ memcpy(formats_ptr(blob_data), plane->format_types, formats_size);
+
+ /* If we can't determine support, just bail */
+ if (!plane->funcs->format_mod_supported)
+ goto done;
+
+ mod = modifiers_ptr(blob_data);
+ for (i = 0; i < plane->modifier_count; i++) {
+ for (j = 0; j < plane->format_count; j++) {
+ if (plane->funcs->format_mod_supported(plane,
+ plane->format_types[j],
+ plane->modifiers[i])) {
+
+ mod->formats |= 1ULL << j;
+ }
+ }
+
+ mod->modifier = plane->modifiers[i];
+ mod->offset = 0;
+ mod->pad = 0;
+ mod++;
+ }
+
+done:
+ drm_object_attach_property(&plane->base, config->modifiers_property,
+ blob->base.id);
+
+ return 0;
+}
+
+/**
+ * drm_universal_plane_init - Initialize a new universal plane object
+ * @dev: DRM device
+ * @plane: plane object to init
+ * @possible_crtcs: bitmask of possible CRTCs
+ * @funcs: callbacks for the new plane
+ * @formats: array of supported formats (DRM_FORMAT\_\*)
+ * @format_count: number of elements in @formats
+ * @format_modifiers: array of struct drm_format modifiers terminated by
+ * DRM_FORMAT_MOD_INVALID
+ * @type: type of plane (overlay, primary, cursor)
+ * @name: printf style format string for the plane name, or NULL for default name
+ *
+ * Initializes a plane object of type @type.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ uint32_t possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, unsigned int format_count,
+ const uint64_t *format_modifiers,
+ enum drm_plane_type type,
+ const char *name, ...)
+{
+ struct drm_mode_config *config = &dev->mode_config;
+ unsigned int format_modifier_count = 0;
+ int ret;
+
+ /* plane index is used with 32bit bitmasks */
+ if (WARN_ON(config->num_total_plane >= 32))
+ return -EINVAL;
+
+ WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
+ (!funcs->atomic_destroy_state ||
+ !funcs->atomic_duplicate_state));
+
+ ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
+ if (ret)
+ return ret;
+
+ drm_modeset_lock_init(&plane->mutex);
+
+ plane->base.properties = &plane->properties;
+ plane->dev = dev;
+ plane->funcs = funcs;
+ plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
+ GFP_KERNEL);
+ if (!plane->format_types) {
+ DRM_DEBUG_KMS("out of memory when allocating plane\n");
+ drm_mode_object_unregister(dev, &plane->base);
+ return -ENOMEM;
+ }
+
+ /*
+ * First driver to need more than 64 formats needs to fix this. Each
+ * format is encoded as a bit and the current code only supports a u64.
+ */
+ if (WARN_ON(format_count > 64))
+ return -EINVAL;
+
+ if (format_modifiers) {
+ const uint64_t *temp_modifiers = format_modifiers;
+ while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID)
+ format_modifier_count++;
+ }
+
+ plane->modifier_count = format_modifier_count;
+ plane->modifiers = kmalloc_array(format_modifier_count,
+ sizeof(format_modifiers[0]),
+ GFP_KERNEL);
+
+ if (format_modifier_count && !plane->modifiers) {
+ DRM_DEBUG_KMS("out of memory when allocating plane\n");
+ kfree(plane->format_types);
+ drm_mode_object_unregister(dev, &plane->base);
+ return -ENOMEM;
+ }
+
+ if (name) {
+ va_list ap;
+
+ va_start(ap, name);
+ plane->name = kvasprintf(GFP_KERNEL, name, ap);
+ va_end(ap);
+ } else {
+ plane->name = kasprintf(GFP_KERNEL, "plane-%d",
+ drm_num_planes(dev));
+ }
+ if (!plane->name) {
+ kfree(plane->format_types);
+ kfree(plane->modifiers);
+ drm_mode_object_unregister(dev, &plane->base);
+ return -ENOMEM;
+ }
+
+ memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
+ plane->format_count = format_count;
+ memcpy(plane->modifiers, format_modifiers,
+ format_modifier_count * sizeof(format_modifiers[0]));
+ plane->possible_crtcs = possible_crtcs;
+ plane->type = type;
+
+ list_add_tail(&plane->head, &config->plane_list);
+ plane->index = config->num_total_plane++;
+
+ drm_object_attach_property(&plane->base,
+ config->plane_type_property,
+ plane->type);
+
+ if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
+ drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
+ drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1);
+ drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
+ drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
+ drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
+ drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
+ drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
+ drm_object_attach_property(&plane->base, config->prop_src_x, 0);
+ drm_object_attach_property(&plane->base, config->prop_src_y, 0);
+ drm_object_attach_property(&plane->base, config->prop_src_w, 0);
+ drm_object_attach_property(&plane->base, config->prop_src_h, 0);
+ }
+
+ if (config->allow_fb_modifiers)
+ create_in_format_blob(dev, plane);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_universal_plane_init);
+
+int drm_plane_register_all(struct drm_device *dev)
+{
+ struct drm_plane *plane;
+ int ret = 0;
+
+ drm_for_each_plane(plane, dev) {
+ if (plane->funcs->late_register)
+ ret = plane->funcs->late_register(plane);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void drm_plane_unregister_all(struct drm_device *dev)
+{
+ struct drm_plane *plane;
+
+ drm_for_each_plane(plane, dev) {
+ if (plane->funcs->early_unregister)
+ plane->funcs->early_unregister(plane);
+ }
+}
+
+/**
+ * drm_plane_init - Initialize a legacy plane
+ * @dev: DRM device
+ * @plane: plane object to init
+ * @possible_crtcs: bitmask of possible CRTCs
+ * @funcs: callbacks for the new plane
+ * @formats: array of supported formats (DRM_FORMAT\_\*)
+ * @format_count: number of elements in @formats
+ * @is_primary: plane type (primary vs overlay)
+ *
+ * Legacy API to initialize a DRM plane.
+ *
+ * New drivers should call drm_universal_plane_init() instead.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ uint32_t possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, unsigned int format_count,
+ bool is_primary)
+{
+ enum drm_plane_type type;
+
+ type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
+ return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
+ formats, format_count,
+ NULL, type, NULL);
+}
+EXPORT_SYMBOL(drm_plane_init);
+
+/**
+ * drm_plane_cleanup - Clean up the core plane usage
+ * @plane: plane to cleanup
+ *
+ * This function cleans up @plane and removes it from the DRM mode setting
+ * core. Note that the function does *not* free the plane structure itself,
+ * this is the responsibility of the caller.
+ */
+void drm_plane_cleanup(struct drm_plane *plane)
+{
+ struct drm_device *dev = plane->dev;
+
+ drm_modeset_lock_fini(&plane->mutex);
+
+ kfree(plane->format_types);
+ kfree(plane->modifiers);
+ drm_mode_object_unregister(dev, &plane->base);
+
+ BUG_ON(list_empty(&plane->head));
+
+ /* Note that the plane_list is considered to be static; should we
+ * remove the drm_plane at runtime we would have to decrement all
+ * the indices on the drm_plane after us in the plane_list.
+ */
+
+ list_del(&plane->head);
+ dev->mode_config.num_total_plane--;
+
+ WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
+ if (plane->state && plane->funcs->atomic_destroy_state)
+ plane->funcs->atomic_destroy_state(plane, plane->state);
+
+ kfree(plane->name);
+
+ memset(plane, 0, sizeof(*plane));
+}
+EXPORT_SYMBOL(drm_plane_cleanup);
+
+/**
+ * drm_plane_from_index - find the registered plane at an index
+ * @dev: DRM device
+ * @idx: index of registered plane to find for
+ *
+ * Given a plane index, return the registered plane from DRM device's
+ * list of planes with matching index. This is the inverse of drm_plane_index().
+ */
+struct drm_plane *
+drm_plane_from_index(struct drm_device *dev, int idx)
+{
+ struct drm_plane *plane;
+
+ drm_for_each_plane(plane, dev)
+ if (idx == plane->index)
+ return plane;
+
+ return NULL;
+}
+EXPORT_SYMBOL(drm_plane_from_index);
+
+/**
+ * drm_plane_force_disable - Forcibly disable a plane
+ * @plane: plane to disable
+ *
+ * Forces the plane to be disabled.
+ *
+ * Used when the plane's current framebuffer is destroyed,
+ * and when restoring fbdev mode.
+ *
+ * Note that this function is not suitable for atomic drivers, since it doesn't
+ * wire through the lock acquisition context properly and hence can't handle
+ * retries or driver private locks. You probably want to use
+ * drm_atomic_helper_disable_plane() or
+ * drm_atomic_helper_disable_planes_on_crtc() instead.
+ */
+void drm_plane_force_disable(struct drm_plane *plane)
+{
+ int ret;
+
+ if (!plane->fb)
+ return;
+
+ WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
+
+ plane->old_fb = plane->fb;
+ ret = plane->funcs->disable_plane(plane, NULL);
+ if (ret) {
+ DRM_ERROR("failed to disable plane with busy fb\n");
+ plane->old_fb = NULL;
+ return;
+ }
+ /* disconnect the plane from the fb and crtc: */
+ drm_framebuffer_put(plane->old_fb);
+ plane->old_fb = NULL;
+ plane->fb = NULL;
+ plane->crtc = NULL;
+}
+EXPORT_SYMBOL(drm_plane_force_disable);
+
+/**
+ * drm_mode_plane_set_obj_prop - set the value of a property
+ * @plane: drm plane object to set property value for
+ * @property: property to set
+ * @value: value the property should be set to
+ *
+ * This functions sets a given property on a given plane object. This function
+ * calls the driver's ->set_property callback and changes the software state of
+ * the property if the callback succeeds.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
+ struct drm_property *property,
+ uint64_t value)
+{
+ int ret = -EINVAL;
+ struct drm_mode_object *obj = &plane->base;
+
+ if (plane->funcs->set_property)
+ ret = plane->funcs->set_property(plane, property, value);
+ if (!ret)
+ drm_object_property_set_value(obj, property, value);
+
+ return ret;
+}
+EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
+
+int drm_mode_getplane_res(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_get_plane_res *plane_resp = data;
+ struct drm_mode_config *config;
+ struct drm_plane *plane;
+ uint32_t __user *plane_ptr;
+ int count = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ config = &dev->mode_config;
+ 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.
+ */
+ 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 (drm_lease_held(file_priv, plane->base.id)) {
+ if (count < plane_resp->count_planes &&
+ put_user(plane->base.id, plane_ptr + count))
+ return -EFAULT;
+ count++;
+ }
+ }
+ plane_resp->count_planes = count;
+
+ return 0;
+}
+
+int drm_mode_getplane(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_get_plane *plane_resp = data;
+ struct drm_plane *plane;
+ uint32_t __user *format_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ plane = drm_plane_find(dev, file_priv, plane_resp->plane_id);
+ if (!plane)
+ return -ENOENT;
+
+ drm_modeset_lock(&plane->mutex, NULL);
+ if (plane->state && plane->state->crtc && drm_lease_held(file_priv, plane->state->crtc->base.id))
+ plane_resp->crtc_id = plane->state->crtc->base.id;
+ else if (!plane->state && plane->crtc && drm_lease_held(file_priv, plane->crtc->base.id))
+ plane_resp->crtc_id = plane->crtc->base.id;
+ else
+ plane_resp->crtc_id = 0;
+
+ if (plane->state && plane->state->fb)
+ plane_resp->fb_id = plane->state->fb->base.id;
+ else if (!plane->state && plane->fb)
+ plane_resp->fb_id = plane->fb->base.id;
+ else
+ plane_resp->fb_id = 0;
+ drm_modeset_unlock(&plane->mutex);
+
+ plane_resp->plane_id = plane->base.id;
+ plane_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv,
+ plane->possible_crtcs);
+
+ plane_resp->gamma_size = 0;
+
+ /*
+ * This ioctl is called twice, once to determine how much space is
+ * needed, and the 2nd time to fill it.
+ */
+ if (plane->format_count &&
+ (plane_resp->count_format_types >= plane->format_count)) {
+ format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
+ if (copy_to_user(format_ptr,
+ plane->format_types,
+ sizeof(uint32_t) * plane->format_count)) {
+ return -EFAULT;
+ }
+ }
+ plane_resp->count_format_types = plane->format_count;
+
+ return 0;
+}
+
+int drm_plane_check_pixel_format(struct drm_plane *plane,
+ u32 format, u64 modifier)
+{
+ unsigned int i;
+
+ for (i = 0; i < plane->format_count; i++) {
+ if (format == plane->format_types[i])
+ break;
+ }
+ if (i == plane->format_count)
+ return -EINVAL;
+
+ if (plane->funcs->format_mod_supported) {
+ if (!plane->funcs->format_mod_supported(plane, format, modifier))
+ return -EINVAL;
+ } else {
+ if (!plane->modifier_count)
+ return 0;
+
+ for (i = 0; i < plane->modifier_count; i++) {
+ if (modifier == plane->modifiers[i])
+ break;
+ }
+ if (i == plane->modifier_count)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int __setplane_check(struct drm_plane *plane,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int32_t crtc_x, int32_t crtc_y,
+ uint32_t crtc_w, uint32_t crtc_h,
+ uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h)
+{
+ int ret;
+
+ /* Check whether this plane is usable on this CRTC */
+ if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
+ DRM_DEBUG_KMS("Invalid crtc for plane\n");
+ return -EINVAL;
+ }
+
+ /* Check whether this plane supports the fb pixel format. */
+ ret = drm_plane_check_pixel_format(plane, fb->format->format,
+ fb->modifier);
+ if (ret) {
+ struct drm_format_name_buf format_name;
+
+ DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n",
+ drm_get_format_name(fb->format->format,
+ &format_name),
+ fb->modifier);
+ return ret;
+ }
+
+ /* Give drivers some help against integer overflows */
+ if (crtc_w > INT_MAX ||
+ crtc_x > INT_MAX - (int32_t) crtc_w ||
+ crtc_h > INT_MAX ||
+ crtc_y > INT_MAX - (int32_t) crtc_h) {
+ DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
+ crtc_w, crtc_h, crtc_x, crtc_y);
+ return -ERANGE;
+ }
+
+ ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * __setplane_internal - setplane handler for internal callers
+ *
+ * This function will take a reference on the new fb for the plane
+ * on success.
+ *
+ * src_{x,y,w,h} are provided in 16.16 fixed point format
+ */
+static int __setplane_internal(struct drm_plane *plane,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int32_t crtc_x, int32_t crtc_y,
+ uint32_t crtc_w, uint32_t crtc_h,
+ /* src_{x,y,w,h} values are 16.16 fixed point */
+ uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ int ret = 0;
+
+ WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
+
+ /* No fb means shut it down */
+ if (!fb) {
+ plane->old_fb = plane->fb;
+ ret = plane->funcs->disable_plane(plane, ctx);
+ if (!ret) {
+ plane->crtc = NULL;
+ plane->fb = NULL;
+ } else {
+ plane->old_fb = NULL;
+ }
+ goto out;
+ }
+
+ ret = __setplane_check(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x, src_y, src_w, src_h);
+ if (ret)
+ goto out;
+
+ plane->old_fb = plane->fb;
+ ret = plane->funcs->update_plane(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x, src_y, src_w, src_h, ctx);
+ if (!ret) {
+ plane->crtc = crtc;
+ plane->fb = fb;
+ drm_framebuffer_get(plane->fb);
+ } else {
+ plane->old_fb = NULL;
+ }
+
+out:
+ if (plane->old_fb)
+ drm_framebuffer_put(plane->old_fb);
+ plane->old_fb = NULL;
+
+ return ret;
+}
+
+static int __setplane_atomic(struct drm_plane *plane,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int32_t crtc_x, int32_t crtc_y,
+ uint32_t crtc_w, uint32_t crtc_h,
+ uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ int ret;
+
+ WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev));
+
+ /* No fb means shut it down */
+ if (!fb)
+ return plane->funcs->disable_plane(plane, ctx);
+
+ /*
+ * FIXME: This is redundant with drm_atomic_plane_check(),
+ * but the legacy cursor/"async" .update_plane() tricks
+ * don't call that so we still need this here. Should remove
+ * this when all .update_plane() implementations have been
+ * fixed to call drm_atomic_plane_check().
+ */
+ ret = __setplane_check(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x, src_y, src_w, src_h);
+ if (ret)
+ return ret;
+
+ return plane->funcs->update_plane(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x, src_y, src_w, src_h, ctx);
+}
+
+static int setplane_internal(struct drm_plane *plane,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int32_t crtc_x, int32_t crtc_y,
+ uint32_t crtc_w, uint32_t crtc_h,
+ /* src_{x,y,w,h} values are 16.16 fixed point */
+ uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h)
+{
+ struct drm_modeset_acquire_ctx ctx;
+ int ret;
+
+ drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
+retry:
+ ret = drm_modeset_lock_all_ctx(plane->dev, &ctx);
+ if (ret)
+ goto fail;
+
+ if (drm_drv_uses_atomic_modeset(plane->dev))
+ ret = __setplane_atomic(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x, src_y, src_w, src_h, &ctx);
+ else
+ ret = __setplane_internal(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x, src_y, src_w, src_h, &ctx);
+
+fail:
+ if (ret == -EDEADLK) {
+ ret = drm_modeset_backoff(&ctx);
+ if (!ret)
+ goto retry;
+ }
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+
+ return ret;
+}
+
+int drm_mode_setplane(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_set_plane *plane_req = data;
+ struct drm_plane *plane;
+ struct drm_crtc *crtc = NULL;
+ struct drm_framebuffer *fb = NULL;
+ int ret;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ /*
+ * First, find the plane, crtc, and fb objects. If not available,
+ * we don't bother to call the driver.
+ */
+ plane = drm_plane_find(dev, file_priv, plane_req->plane_id);
+ if (!plane) {
+ DRM_DEBUG_KMS("Unknown plane ID %d\n",
+ plane_req->plane_id);
+ return -ENOENT;
+ }
+
+ if (plane_req->fb_id) {
+ fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id);
+ if (!fb) {
+ DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
+ plane_req->fb_id);
+ return -ENOENT;
+ }
+
+ crtc = drm_crtc_find(dev, file_priv, plane_req->crtc_id);
+ if (!crtc) {
+ drm_framebuffer_put(fb);
+ DRM_DEBUG_KMS("Unknown crtc ID %d\n",
+ plane_req->crtc_id);
+ return -ENOENT;
+ }
+ }
+
+ ret = setplane_internal(plane, crtc, fb,
+ plane_req->crtc_x, plane_req->crtc_y,
+ plane_req->crtc_w, plane_req->crtc_h,
+ plane_req->src_x, plane_req->src_y,
+ plane_req->src_w, plane_req->src_h);
+
+ if (fb)
+ drm_framebuffer_put(fb);
+
+ return ret;
+}
+
+static int drm_mode_cursor_universal(struct drm_crtc *crtc,
+ struct drm_mode_cursor2 *req,
+ struct drm_file *file_priv,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_plane *plane = crtc->cursor;
+ struct drm_framebuffer *fb = NULL;
+ struct drm_mode_fb_cmd2 fbreq = {
+ .width = req->width,
+ .height = req->height,
+ .pixel_format = DRM_FORMAT_ARGB8888,
+ .pitches = { req->width * 4 },
+ .handles = { req->handle },
+ };
+ int32_t crtc_x, crtc_y;
+ uint32_t crtc_w = 0, crtc_h = 0;
+ uint32_t src_w = 0, src_h = 0;
+ int ret = 0;
+
+ BUG_ON(!plane);
+ WARN_ON(plane->crtc != crtc && plane->crtc != NULL);
+
+ /*
+ * Obtain fb we'll be using (either new or existing) and take an extra
+ * reference to it if fb != null. setplane will take care of dropping
+ * the reference if the plane update fails.
+ */
+ if (req->flags & DRM_MODE_CURSOR_BO) {
+ if (req->handle) {
+ fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
+ if (IS_ERR(fb)) {
+ DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
+ return PTR_ERR(fb);
+ }
+
+ fb->hot_x = req->hot_x;
+ fb->hot_y = req->hot_y;
+ } else {
+ fb = NULL;
+ }
+ } else {
+ if (plane->state)
+ fb = plane->state->fb;
+ else
+ fb = plane->fb;
+
+ if (fb)
+ drm_framebuffer_get(fb);
+ }
+
+ if (req->flags & DRM_MODE_CURSOR_MOVE) {
+ crtc_x = req->x;
+ crtc_y = req->y;
+ } else {
+ crtc_x = crtc->cursor_x;
+ crtc_y = crtc->cursor_y;
+ }
+
+ if (fb) {
+ crtc_w = fb->width;
+ crtc_h = fb->height;
+ src_w = fb->width << 16;
+ src_h = fb->height << 16;
+ }
+
+ if (drm_drv_uses_atomic_modeset(dev))
+ ret = __setplane_atomic(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ 0, 0, src_w, src_h, ctx);
+ else
+ ret = __setplane_internal(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ 0, 0, src_w, src_h, ctx);
+
+ if (fb)
+ drm_framebuffer_put(fb);
+
+ /* Update successful; save new cursor position, if necessary */
+ if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
+ crtc->cursor_x = req->x;
+ crtc->cursor_y = req->y;
+ }
+
+ return ret;
+}
+
+static int drm_mode_cursor_common(struct drm_device *dev,
+ struct drm_mode_cursor2 *req,
+ struct drm_file *file_priv)
+{
+ struct drm_crtc *crtc;
+ struct drm_modeset_acquire_ctx ctx;
+ int ret = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
+ return -EINVAL;
+
+ crtc = drm_crtc_find(dev, file_priv, req->crtc_id);
+ if (!crtc) {
+ DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
+ return -ENOENT;
+ }
+
+ drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
+retry:
+ ret = drm_modeset_lock(&crtc->mutex, &ctx);
+ if (ret)
+ goto out;
+ /*
+ * If this crtc has a universal cursor plane, call that plane's update
+ * handler rather than using legacy cursor handlers.
+ */
+ if (crtc->cursor) {
+ ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
+ if (ret)
+ goto out;
+
+ ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
+ goto out;
+ }
+
+ if (req->flags & DRM_MODE_CURSOR_BO) {
+ if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
+ ret = -ENXIO;
+ goto out;
+ }
+ /* Turns off the cursor if handle is 0 */
+ if (crtc->funcs->cursor_set2)
+ ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
+ req->width, req->height, req->hot_x, req->hot_y);
+ else
+ ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
+ req->width, req->height);
+ }
+
+ if (req->flags & DRM_MODE_CURSOR_MOVE) {
+ if (crtc->funcs->cursor_move) {
+ ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
+ } else {
+ ret = -EFAULT;
+ goto out;
+ }
+ }
+out:
+ if (ret == -EDEADLK) {
+ ret = drm_modeset_backoff(&ctx);
+ if (!ret)
+ goto retry;
+ }
+
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+
+ return ret;
+
+}
+
+
+int drm_mode_cursor_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_cursor *req = data;
+ struct drm_mode_cursor2 new_req;
+
+ memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
+ new_req.hot_x = new_req.hot_y = 0;
+
+ return drm_mode_cursor_common(dev, &new_req, file_priv);
+}
+
+/*
+ * Set the cursor configuration based on user request. This implements the 2nd
+ * version of the cursor ioctl, which allows userspace to additionally specify
+ * the hotspot of the pointer.
+ */
+int drm_mode_cursor2_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_cursor2 *req = data;
+
+ return drm_mode_cursor_common(dev, req, file_priv);
+}
+
+int drm_mode_page_flip_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_crtc_page_flip_target *page_flip = data;
+ struct drm_crtc *crtc;
+ struct drm_plane *plane;
+ struct drm_framebuffer *fb = NULL, *old_fb;
+ struct drm_pending_vblank_event *e = NULL;
+ u32 target_vblank = page_flip->sequence;
+ struct drm_modeset_acquire_ctx ctx;
+ int ret = -EINVAL;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
+ return -EINVAL;
+
+ if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
+ return -EINVAL;
+
+ /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
+ * can be specified
+ */
+ if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
+ return -EINVAL;
+
+ if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
+ return -EINVAL;
+
+ crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id);
+ if (!crtc)
+ return -ENOENT;
+
+ plane = crtc->primary;
+
+ if (crtc->funcs->page_flip_target) {
+ u32 current_vblank;
+ int r;
+
+ r = drm_crtc_vblank_get(crtc);
+ if (r)
+ return r;
+
+ current_vblank = (u32)drm_crtc_vblank_count(crtc);
+
+ switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
+ case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
+ if ((int)(target_vblank - current_vblank) > 1) {
+ DRM_DEBUG("Invalid absolute flip target %u, "
+ "must be <= %u\n", target_vblank,
+ current_vblank + 1);
+ drm_crtc_vblank_put(crtc);
+ return -EINVAL;
+ }
+ break;
+ case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
+ if (target_vblank != 0 && target_vblank != 1) {
+ DRM_DEBUG("Invalid relative flip target %u, "
+ "must be 0 or 1\n", target_vblank);
+ drm_crtc_vblank_put(crtc);
+ return -EINVAL;
+ }
+ target_vblank += current_vblank;
+ break;
+ default:
+ target_vblank = current_vblank +
+ !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
+ break;
+ }
+ } else if (crtc->funcs->page_flip == NULL ||
+ (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
+ return -EINVAL;
+ }
+
+ drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
+retry:
+ ret = drm_modeset_lock(&crtc->mutex, &ctx);
+ if (ret)
+ goto out;
+ ret = drm_modeset_lock(&plane->mutex, &ctx);
+ if (ret)
+ goto out;
+
+ if (plane->state)
+ old_fb = plane->state->fb;
+ else
+ old_fb = plane->fb;
+
+ if (old_fb == NULL) {
+ /* The framebuffer is currently unbound, presumably
+ * due to a hotplug event, that userspace has not
+ * yet discovered.
+ */
+ ret = -EBUSY;
+ goto out;
+ }
+
+ fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id);
+ if (!fb) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ if (plane->state) {
+ const struct drm_plane_state *state = plane->state;
+
+ ret = drm_framebuffer_check_src_coords(state->src_x,
+ state->src_y,
+ state->src_w,
+ state->src_h,
+ fb);
+ } else {
+ ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y,
+ &crtc->mode, fb);
+ }
+ if (ret)
+ goto out;
+
+ if (old_fb->format != fb->format) {
+ DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
+ e = kzalloc(sizeof *e, GFP_KERNEL);
+ if (!e) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
+ e->event.base.length = sizeof(e->event);
+ e->event.vbl.user_data = page_flip->user_data;
+ e->event.vbl.crtc_id = crtc->base.id;
+
+ ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
+ if (ret) {
+ kfree(e);
+ e = NULL;
+ goto out;
+ }
+ }
+
+ plane->old_fb = plane->fb;
+ if (crtc->funcs->page_flip_target)
+ ret = crtc->funcs->page_flip_target(crtc, fb, e,
+ page_flip->flags,
+ target_vblank,
+ &ctx);
+ else
+ ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
+ &ctx);
+ if (ret) {
+ if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
+ drm_event_cancel_free(dev, &e->base);
+ /* Keep the old fb, don't unref it. */
+ plane->old_fb = NULL;
+ } else {
+ if (!plane->state) {
+ plane->fb = fb;
+ drm_framebuffer_get(fb);
+ }
+ }
+
+out:
+ if (fb)
+ drm_framebuffer_put(fb);
+ if (plane->old_fb)
+ drm_framebuffer_put(plane->old_fb);
+ plane->old_fb = NULL;
+
+ if (ret == -EDEADLK) {
+ ret = drm_modeset_backoff(&ctx);
+ if (!ret)
+ goto retry;
+ }
+
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+
+ if (ret && crtc->funcs->page_flip_target)
+ drm_crtc_vblank_put(crtc);
+
+ return ret;
+}