| /* |
| * Copyright (c) 2006-2008 Intel Corporation |
| * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
| * Copyright (c) 2008 Red Hat Inc. |
| * |
| * DRM core CRTC related functions |
| * |
| * 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. |
| * |
| * Authors: |
| * Keith Packard |
| * Eric Anholt <eric@anholt.net> |
| * Dave Airlie <airlied@linux.ie> |
| * Jesse Barnes <jesse.barnes@intel.com> |
| */ |
| #include <linux/ctype.h> |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| #include <linux/export.h> |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_edid.h> |
| #include <drm/drm_fourcc.h> |
| #include <drm/drm_modeset_lock.h> |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_auth.h> |
| #include <drm/drm_framebuffer.h> |
| |
| #include "drm_crtc_internal.h" |
| #include "drm_internal.h" |
| |
| /* |
| * Global properties |
| */ |
| static const struct drm_prop_enum_list drm_plane_type_enum_list[] = { |
| { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, |
| { DRM_PLANE_TYPE_PRIMARY, "Primary" }, |
| { DRM_PLANE_TYPE_CURSOR, "Cursor" }, |
| }; |
| |
| /* |
| * Optional properties |
| */ |
| /** |
| * drm_crtc_force_disable - Forcibly turn off a CRTC |
| * @crtc: CRTC to turn off |
| * |
| * Returns: |
| * Zero on success, error code on failure. |
| */ |
| int drm_crtc_force_disable(struct drm_crtc *crtc) |
| { |
| struct drm_mode_set set = { |
| .crtc = crtc, |
| }; |
| |
| return drm_mode_set_config_internal(&set); |
| } |
| EXPORT_SYMBOL(drm_crtc_force_disable); |
| |
| /** |
| * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs |
| * @dev: DRM device whose CRTCs to turn off |
| * |
| * Drivers may want to call this on unload to ensure that all displays are |
| * unlit and the GPU is in a consistent, low power state. Takes modeset locks. |
| * |
| * Returns: |
| * Zero on success, error code on failure. |
| */ |
| int drm_crtc_force_disable_all(struct drm_device *dev) |
| { |
| struct drm_crtc *crtc; |
| int ret = 0; |
| |
| drm_modeset_lock_all(dev); |
| drm_for_each_crtc(crtc, dev) |
| if (crtc->enabled) { |
| ret = drm_crtc_force_disable(crtc); |
| if (ret) |
| goto out; |
| } |
| out: |
| drm_modeset_unlock_all(dev); |
| return ret; |
| } |
| EXPORT_SYMBOL(drm_crtc_force_disable_all); |
| |
| DEFINE_WW_CLASS(crtc_ww_class); |
| |
| static unsigned int drm_num_crtcs(struct drm_device *dev) |
| { |
| unsigned int num = 0; |
| struct drm_crtc *tmp; |
| |
| drm_for_each_crtc(tmp, dev) { |
| num++; |
| } |
| |
| return num; |
| } |
| |
| static int drm_crtc_register_all(struct drm_device *dev) |
| { |
| struct drm_crtc *crtc; |
| int ret = 0; |
| |
| drm_for_each_crtc(crtc, dev) { |
| if (crtc->funcs->late_register) |
| ret = crtc->funcs->late_register(crtc); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static void drm_crtc_unregister_all(struct drm_device *dev) |
| { |
| struct drm_crtc *crtc; |
| |
| drm_for_each_crtc(crtc, dev) { |
| if (crtc->funcs->early_unregister) |
| crtc->funcs->early_unregister(crtc); |
| } |
| } |
| |
| /** |
| * drm_crtc_init_with_planes - Initialise a new CRTC object with |
| * specified primary and cursor planes. |
| * @dev: DRM device |
| * @crtc: CRTC object to init |
| * @primary: Primary plane for CRTC |
| * @cursor: Cursor plane for CRTC |
| * @funcs: callbacks for the new CRTC |
| * @name: printf style format string for the CRTC name, or NULL for default name |
| * |
| * Inits a new object created as base part of a driver crtc object. |
| * |
| * Returns: |
| * Zero on success, error code on failure. |
| */ |
| int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
| struct drm_plane *primary, |
| struct drm_plane *cursor, |
| const struct drm_crtc_funcs *funcs, |
| const char *name, ...) |
| { |
| struct drm_mode_config *config = &dev->mode_config; |
| int ret; |
| |
| WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
| WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); |
| |
| crtc->dev = dev; |
| crtc->funcs = funcs; |
| |
| INIT_LIST_HEAD(&crtc->commit_list); |
| spin_lock_init(&crtc->commit_lock); |
| |
| drm_modeset_lock_init(&crtc->mutex); |
| ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
| if (ret) |
| return ret; |
| |
| if (name) { |
| va_list ap; |
| |
| va_start(ap, name); |
| crtc->name = kvasprintf(GFP_KERNEL, name, ap); |
| va_end(ap); |
| } else { |
| crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", |
| drm_num_crtcs(dev)); |
| } |
| if (!crtc->name) { |
| drm_mode_object_unregister(dev, &crtc->base); |
| return -ENOMEM; |
| } |
| |
| crtc->base.properties = &crtc->properties; |
| |
| list_add_tail(&crtc->head, &config->crtc_list); |
| crtc->index = config->num_crtc++; |
| |
| crtc->primary = primary; |
| crtc->cursor = cursor; |
| if (primary) |
| primary->possible_crtcs = 1 << drm_crtc_index(crtc); |
| if (cursor) |
| cursor->possible_crtcs = 1 << drm_crtc_index(crtc); |
| |
| if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
| drm_object_attach_property(&crtc->base, config->prop_active, 0); |
| drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(drm_crtc_init_with_planes); |
| |
| /** |
| * drm_crtc_cleanup - Clean up the core crtc usage |
| * @crtc: CRTC to cleanup |
| * |
| * This function cleans up @crtc and removes it from the DRM mode setting |
| * core. Note that the function does *not* free the crtc structure itself, |
| * this is the responsibility of the caller. |
| */ |
| void drm_crtc_cleanup(struct drm_crtc *crtc) |
| { |
| struct drm_device *dev = crtc->dev; |
| |
| /* Note that the crtc_list is considered to be static; should we |
| * remove the drm_crtc at runtime we would have to decrement all |
| * the indices on the drm_crtc after us in the crtc_list. |
| */ |
| |
| kfree(crtc->gamma_store); |
| crtc->gamma_store = NULL; |
| |
| drm_modeset_lock_fini(&crtc->mutex); |
| |
| drm_mode_object_unregister(dev, &crtc->base); |
| list_del(&crtc->head); |
| dev->mode_config.num_crtc--; |
| |
| WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); |
| if (crtc->state && crtc->funcs->atomic_destroy_state) |
| crtc->funcs->atomic_destroy_state(crtc, crtc->state); |
| |
| kfree(crtc->name); |
| |
| memset(crtc, 0, sizeof(*crtc)); |
| } |
| EXPORT_SYMBOL(drm_crtc_cleanup); |
| |
| 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; |
| } |
| |
| /** |
| * 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 |
| * @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, |
| unsigned long possible_crtcs, |
| const struct drm_plane_funcs *funcs, |
| const uint32_t *formats, unsigned int format_count, |
| enum drm_plane_type type, |
| const char *name, ...) |
| { |
| struct drm_mode_config *config = &dev->mode_config; |
| int ret; |
| |
| ret = drm_mode_object_get(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; |
| } |
| |
| 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); |
| drm_mode_object_unregister(dev, &plane->base); |
| return -ENOMEM; |
| } |
| |
| memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); |
| plane->format_count = format_count; |
| plane->possible_crtcs = possible_crtcs; |
| plane->type = type; |
| |
| list_add_tail(&plane->head, &config->plane_list); |
| plane->index = config->num_total_plane++; |
| if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
| config->num_overlay_plane++; |
| |
| drm_object_attach_property(&plane->base, |
| config->plane_type_property, |
| 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_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); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(drm_universal_plane_init); |
| |
| static 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; |
| } |
| |
| static 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, |
| unsigned long 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, 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_all(dev); |
| kfree(plane->format_types); |
| 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--; |
| if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
| dev->mode_config.num_overlay_plane--; |
| drm_modeset_unlock_all(dev); |
| |
| 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. |
| */ |
| 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. |
| */ |
| void drm_plane_force_disable(struct drm_plane *plane) |
| { |
| int ret; |
| |
| if (!plane->fb) |
| return; |
| |
| plane->old_fb = plane->fb; |
| ret = plane->funcs->disable_plane(plane); |
| 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_unreference(plane->old_fb); |
| plane->old_fb = NULL; |
| plane->fb = NULL; |
| plane->crtc = NULL; |
| } |
| EXPORT_SYMBOL(drm_plane_force_disable); |
| |
| int drm_modeset_register_all(struct drm_device *dev) |
| { |
| int ret; |
| |
| ret = drm_plane_register_all(dev); |
| if (ret) |
| goto err_plane; |
| |
| ret = drm_crtc_register_all(dev); |
| if (ret) |
| goto err_crtc; |
| |
| ret = drm_encoder_register_all(dev); |
| if (ret) |
| goto err_encoder; |
| |
| ret = drm_connector_register_all(dev); |
| if (ret) |
| goto err_connector; |
| |
| return 0; |
| |
| err_connector: |
| drm_encoder_unregister_all(dev); |
| err_encoder: |
| drm_crtc_unregister_all(dev); |
| err_crtc: |
| drm_plane_unregister_all(dev); |
| err_plane: |
| return ret; |
| } |
| |
| void drm_modeset_unregister_all(struct drm_device *dev) |
| { |
| drm_connector_unregister_all(dev); |
| drm_encoder_unregister_all(dev); |
| drm_crtc_unregister_all(dev); |
| drm_plane_unregister_all(dev); |
| } |
| |
| static int drm_mode_create_standard_properties(struct drm_device *dev) |
| { |
| struct drm_property *prop; |
| int ret; |
| |
| ret = drm_connector_create_standard_properties(dev); |
| if (ret) |
| return ret; |
| |
| prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
| "type", drm_plane_type_enum_list, |
| ARRAY_SIZE(drm_plane_type_enum_list)); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.plane_type_property = prop; |
| |
| prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
| "SRC_X", 0, UINT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_src_x = prop; |
| |
| prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
| "SRC_Y", 0, UINT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_src_y = prop; |
| |
| prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
| "SRC_W", 0, UINT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_src_w = prop; |
| |
| prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
| "SRC_H", 0, UINT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_src_h = prop; |
| |
| prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, |
| "CRTC_X", INT_MIN, INT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_crtc_x = prop; |
| |
| prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, |
| "CRTC_Y", INT_MIN, INT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_crtc_y = prop; |
| |
| prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
| "CRTC_W", 0, INT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_crtc_w = prop; |
| |
| prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
| "CRTC_H", 0, INT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_crtc_h = prop; |
| |
| prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, |
| "FB_ID", DRM_MODE_OBJECT_FB); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_fb_id = prop; |
| |
| prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, |
| "CRTC_ID", DRM_MODE_OBJECT_CRTC); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_crtc_id = prop; |
| |
| prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC, |
| "ACTIVE"); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_active = prop; |
| |
| prop = drm_property_create(dev, |
| DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, |
| "MODE_ID", 0); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.prop_mode_id = prop; |
| |
| prop = drm_property_create(dev, |
| DRM_MODE_PROP_BLOB, |
| "DEGAMMA_LUT", 0); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.degamma_lut_property = prop; |
| |
| prop = drm_property_create_range(dev, |
| DRM_MODE_PROP_IMMUTABLE, |
| "DEGAMMA_LUT_SIZE", 0, UINT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.degamma_lut_size_property = prop; |
| |
| prop = drm_property_create(dev, |
| DRM_MODE_PROP_BLOB, |
| "CTM", 0); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.ctm_property = prop; |
| |
| prop = drm_property_create(dev, |
| DRM_MODE_PROP_BLOB, |
| "GAMMA_LUT", 0); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.gamma_lut_property = prop; |
| |
| prop = drm_property_create_range(dev, |
| DRM_MODE_PROP_IMMUTABLE, |
| "GAMMA_LUT_SIZE", 0, UINT_MAX); |
| if (!prop) |
| return -ENOMEM; |
| dev->mode_config.gamma_lut_size_property = prop; |
| |
| return 0; |
| } |
| |
| /** |
| * drm_mode_getresources - get graphics configuration |
| * @dev: drm device for the ioctl |
| * @data: data pointer for the ioctl |
| * @file_priv: drm file for the ioctl call |
| * |
| * Construct a set of configuration description structures and return |
| * them to the user, including CRTC, connector and framebuffer configuration. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_getresources(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct drm_mode_card_res *card_res = data; |
| struct list_head *lh; |
| struct drm_framebuffer *fb; |
| struct drm_connector *connector; |
| struct drm_crtc *crtc; |
| struct drm_encoder *encoder; |
| int ret = 0; |
| int connector_count = 0; |
| int crtc_count = 0; |
| int fb_count = 0; |
| int encoder_count = 0; |
| int copied = 0; |
| uint32_t __user *fb_id; |
| uint32_t __user *crtc_id; |
| uint32_t __user *connector_id; |
| uint32_t __user *encoder_id; |
| |
| if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| return -EINVAL; |
| |
| |
| mutex_lock(&file_priv->fbs_lock); |
| /* |
| * For the non-control nodes we need to limit the list of resources |
| * by IDs in the group list for this node |
| */ |
| list_for_each(lh, &file_priv->fbs) |
| fb_count++; |
| |
| /* handle this in 4 parts */ |
| /* FBs */ |
| if (card_res->count_fbs >= fb_count) { |
| copied = 0; |
| fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; |
| list_for_each_entry(fb, &file_priv->fbs, filp_head) { |
| if (put_user(fb->base.id, fb_id + copied)) { |
| mutex_unlock(&file_priv->fbs_lock); |
| return -EFAULT; |
| } |
| copied++; |
| } |
| } |
| card_res->count_fbs = fb_count; |
| mutex_unlock(&file_priv->fbs_lock); |
| |
| /* mode_config.mutex protects the connector list against e.g. DP MST |
| * connector hot-adding. CRTC/Plane lists are invariant. */ |
| mutex_lock(&dev->mode_config.mutex); |
| drm_for_each_crtc(crtc, dev) |
| crtc_count++; |
| |
| drm_for_each_connector(connector, dev) |
| connector_count++; |
| |
| drm_for_each_encoder(encoder, dev) |
| encoder_count++; |
| |
| card_res->max_height = dev->mode_config.max_height; |
| card_res->min_height = dev->mode_config.min_height; |
| card_res->max_width = dev->mode_config.max_width; |
| card_res->min_width = dev->mode_config.min_width; |
| |
| /* CRTCs */ |
| if (card_res->count_crtcs >= crtc_count) { |
| copied = 0; |
| crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; |
| drm_for_each_crtc(crtc, dev) { |
| if (put_user(crtc->base.id, crtc_id + copied)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| copied++; |
| } |
| } |
| card_res->count_crtcs = crtc_count; |
| |
| /* Encoders */ |
| if (card_res->count_encoders >= encoder_count) { |
| copied = 0; |
| encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; |
| drm_for_each_encoder(encoder, dev) { |
| if (put_user(encoder->base.id, encoder_id + |
| copied)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| copied++; |
| } |
| } |
| card_res->count_encoders = encoder_count; |
| |
| /* Connectors */ |
| if (card_res->count_connectors >= connector_count) { |
| copied = 0; |
| connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; |
| drm_for_each_connector(connector, dev) { |
| if (put_user(connector->base.id, |
| connector_id + copied)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| copied++; |
| } |
| } |
| card_res->count_connectors = connector_count; |
| |
| out: |
| mutex_unlock(&dev->mode_config.mutex); |
| return ret; |
| } |
| |
| /** |
| * drm_mode_getcrtc - get CRTC configuration |
| * @dev: drm device for the ioctl |
| * @data: data pointer for the ioctl |
| * @file_priv: drm file for the ioctl call |
| * |
| * Construct a CRTC configuration structure to return to the user. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_getcrtc(struct drm_device *dev, |
| void *data, struct drm_file *file_priv) |
| { |
| struct drm_mode_crtc *crtc_resp = data; |
| struct drm_crtc *crtc; |
| |
| if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| return -EINVAL; |
| |
| crtc = drm_crtc_find(dev, crtc_resp->crtc_id); |
| if (!crtc) |
| return -ENOENT; |
| |
| drm_modeset_lock_crtc(crtc, crtc->primary); |
| crtc_resp->gamma_size = crtc->gamma_size; |
| if (crtc->primary->fb) |
| crtc_resp->fb_id = crtc->primary->fb->base.id; |
| else |
| crtc_resp->fb_id = 0; |
| |
| if (crtc->state) { |
| crtc_resp->x = crtc->primary->state->src_x >> 16; |
| crtc_resp->y = crtc->primary->state->src_y >> 16; |
| if (crtc->state->enable) { |
| drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
| crtc_resp->mode_valid = 1; |
| |
| } else { |
| crtc_resp->mode_valid = 0; |
| } |
| } else { |
| crtc_resp->x = crtc->x; |
| crtc_resp->y = crtc->y; |
| if (crtc->enabled) { |
| drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
| crtc_resp->mode_valid = 1; |
| |
| } else { |
| crtc_resp->mode_valid = 0; |
| } |
| } |
| drm_modeset_unlock_crtc(crtc); |
| |
| return 0; |
| } |
| |
| /** |
| * drm_mode_getplane_res - enumerate all plane resources |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * Construct a list of plane ids to return to the user. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| 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 copied = 0; |
| unsigned num_planes; |
| |
| if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| return -EINVAL; |
| |
| config = &dev->mode_config; |
| |
| if (file_priv->universal_planes) |
| num_planes = config->num_total_plane; |
| else |
| num_planes = config->num_overlay_plane; |
| |
| /* |
| * This ioctl is called twice, once to determine how much space is |
| * needed, and the 2nd time to fill it. |
| */ |
| if (num_planes && |
| (plane_resp->count_planes >= num_planes)) { |
| plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; |
| |
| /* Plane lists are invariant, no locking needed. */ |
| drm_for_each_plane(plane, dev) { |
| /* |
| * Unless userspace set the 'universal planes' |
| * capability bit, only advertise overlays. |
| */ |
| if (plane->type != DRM_PLANE_TYPE_OVERLAY && |
| !file_priv->universal_planes) |
| continue; |
| |
| if (put_user(plane->base.id, plane_ptr + copied)) |
| return -EFAULT; |
| copied++; |
| } |
| } |
| plane_resp->count_planes = num_planes; |
| |
| return 0; |
| } |
| |
| /** |
| * drm_mode_getplane - get plane configuration |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * Construct a plane configuration structure to return to the user. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| 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, plane_resp->plane_id); |
| if (!plane) |
| return -ENOENT; |
| |
| drm_modeset_lock(&plane->mutex, NULL); |
| if (plane->crtc) |
| plane_resp->crtc_id = plane->crtc->base.id; |
| else |
| plane_resp->crtc_id = 0; |
| |
| if (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 = 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; |
| } |
| |
| /** |
| * drm_plane_check_pixel_format - Check if the plane supports the pixel format |
| * @plane: plane to check for format support |
| * @format: the pixel format |
| * |
| * Returns: |
| * Zero of @plane has @format in its list of supported pixel formats, -EINVAL |
| * otherwise. |
| */ |
| int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < plane->format_count; i++) { |
| if (format == plane->format_types[i]) |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int check_src_coords(uint32_t src_x, uint32_t src_y, |
| uint32_t src_w, uint32_t src_h, |
| const struct drm_framebuffer *fb) |
| { |
| unsigned int fb_width, fb_height; |
| |
| fb_width = fb->width << 16; |
| fb_height = fb->height << 16; |
| |
| /* Make sure source coordinates are inside the fb. */ |
| if (src_w > fb_width || |
| src_x > fb_width - src_w || |
| src_h > fb_height || |
| src_y > fb_height - src_h) { |
| DRM_DEBUG_KMS("Invalid source coordinates " |
| "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", |
| src_w >> 16, ((src_w & 0xffff) * 15625) >> 10, |
| src_h >> 16, ((src_h & 0xffff) * 15625) >> 10, |
| src_x >> 16, ((src_x & 0xffff) * 15625) >> 10, |
| src_y >> 16, ((src_y & 0xffff) * 15625) >> 10); |
| return -ENOSPC; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * setplane_internal - setplane handler for internal callers |
| * |
| * Note that we assume an extra reference has already been taken on fb. If the |
| * update fails, this reference will be dropped before return; if it succeeds, |
| * the previous framebuffer (if any) will be unreferenced instead. |
| * |
| * 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) |
| { |
| int ret = 0; |
| |
| /* No fb means shut it down */ |
| if (!fb) { |
| plane->old_fb = plane->fb; |
| ret = plane->funcs->disable_plane(plane); |
| if (!ret) { |
| plane->crtc = NULL; |
| plane->fb = NULL; |
| } else { |
| plane->old_fb = NULL; |
| } |
| goto out; |
| } |
| |
| /* 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"); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| /* Check whether this plane supports the fb pixel format. */ |
| ret = drm_plane_check_pixel_format(plane, fb->pixel_format); |
| if (ret) { |
| char *format_name = drm_get_format_name(fb->pixel_format); |
| DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name); |
| kfree(format_name); |
| goto out; |
| } |
| |
| /* 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); |
| ret = -ERANGE; |
| goto out; |
| } |
| |
| ret = check_src_coords(src_x, src_y, src_w, src_h, fb); |
| 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); |
| if (!ret) { |
| plane->crtc = crtc; |
| plane->fb = fb; |
| fb = NULL; |
| } else { |
| plane->old_fb = NULL; |
| } |
| |
| out: |
| if (fb) |
| drm_framebuffer_unreference(fb); |
| if (plane->old_fb) |
| drm_framebuffer_unreference(plane->old_fb); |
| plane->old_fb = NULL; |
| |
| return ret; |
| } |
| |
| 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) |
| { |
| int ret; |
| |
| drm_modeset_lock_all(plane->dev); |
| ret = __setplane_internal(plane, crtc, fb, |
| crtc_x, crtc_y, crtc_w, crtc_h, |
| src_x, src_y, src_w, src_h); |
| drm_modeset_unlock_all(plane->dev); |
| |
| return ret; |
| } |
| |
| /** |
| * drm_mode_setplane - configure a plane's configuration |
| * @dev: DRM device |
| * @data: ioctl data* |
| * @file_priv: DRM file info |
| * |
| * Set plane configuration, including placement, fb, scaling, and other factors. |
| * Or pass a NULL fb to disable (planes may be disabled without providing a |
| * valid crtc). |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| 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; |
| |
| 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, 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, 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, plane_req->crtc_id); |
| if (!crtc) { |
| DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
| plane_req->crtc_id); |
| return -ENOENT; |
| } |
| } |
| |
| /* |
| * setplane_internal will take care of deref'ing either the old or new |
| * framebuffer depending on success. |
| */ |
| return 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); |
| } |
| |
| /** |
| * drm_mode_set_config_internal - helper to call ->set_config |
| * @set: modeset config to set |
| * |
| * This is a little helper to wrap internal calls to the ->set_config driver |
| * interface. The only thing it adds is correct refcounting dance. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_set_config_internal(struct drm_mode_set *set) |
| { |
| struct drm_crtc *crtc = set->crtc; |
| struct drm_framebuffer *fb; |
| struct drm_crtc *tmp; |
| int ret; |
| |
| /* |
| * NOTE: ->set_config can also disable other crtcs (if we steal all |
| * connectors from it), hence we need to refcount the fbs across all |
| * crtcs. Atomic modeset will have saner semantics ... |
| */ |
| drm_for_each_crtc(tmp, crtc->dev) |
| tmp->primary->old_fb = tmp->primary->fb; |
| |
| fb = set->fb; |
| |
| ret = crtc->funcs->set_config(set); |
| if (ret == 0) { |
| crtc->primary->crtc = crtc; |
| crtc->primary->fb = fb; |
| } |
| |
| drm_for_each_crtc(tmp, crtc->dev) { |
| if (tmp->primary->fb) |
| drm_framebuffer_reference(tmp->primary->fb); |
| if (tmp->primary->old_fb) |
| drm_framebuffer_unreference(tmp->primary->old_fb); |
| tmp->primary->old_fb = NULL; |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(drm_mode_set_config_internal); |
| |
| /** |
| * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode |
| * @mode: mode to query |
| * @hdisplay: hdisplay value to fill in |
| * @vdisplay: vdisplay value to fill in |
| * |
| * The vdisplay value will be doubled if the specified mode is a stereo mode of |
| * the appropriate layout. |
| */ |
| void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, |
| int *hdisplay, int *vdisplay) |
| { |
| struct drm_display_mode adjusted; |
| |
| drm_mode_copy(&adjusted, mode); |
| drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY); |
| *hdisplay = adjusted.crtc_hdisplay; |
| *vdisplay = adjusted.crtc_vdisplay; |
| } |
| EXPORT_SYMBOL(drm_crtc_get_hv_timing); |
| |
| /** |
| * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the |
| * CRTC viewport |
| * @crtc: CRTC that framebuffer will be displayed on |
| * @x: x panning |
| * @y: y panning |
| * @mode: mode that framebuffer will be displayed under |
| * @fb: framebuffer to check size of |
| */ |
| int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
| int x, int y, |
| const struct drm_display_mode *mode, |
| const struct drm_framebuffer *fb) |
| |
| { |
| int hdisplay, vdisplay; |
| |
| drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay); |
| |
| if (crtc->state && |
| crtc->primary->state->rotation & (DRM_ROTATE_90 | |
| DRM_ROTATE_270)) |
| swap(hdisplay, vdisplay); |
| |
| return check_src_coords(x << 16, y << 16, |
| hdisplay << 16, vdisplay << 16, fb); |
| } |
| EXPORT_SYMBOL(drm_crtc_check_viewport); |
| |
| /** |
| * drm_mode_setcrtc - set CRTC configuration |
| * @dev: drm device for the ioctl |
| * @data: data pointer for the ioctl |
| * @file_priv: drm file for the ioctl call |
| * |
| * Build a new CRTC configuration based on user request. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_setcrtc(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct drm_mode_config *config = &dev->mode_config; |
| struct drm_mode_crtc *crtc_req = data; |
| struct drm_crtc *crtc; |
| struct drm_connector **connector_set = NULL, *connector; |
| struct drm_framebuffer *fb = NULL; |
| struct drm_display_mode *mode = NULL; |
| struct drm_mode_set set; |
| uint32_t __user *set_connectors_ptr; |
| int ret; |
| int i; |
| |
| if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| return -EINVAL; |
| |
| /* |
| * Universal plane src offsets are only 16.16, prevent havoc for |
| * drivers using universal plane code internally. |
| */ |
| if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) |
| return -ERANGE; |
| |
| drm_modeset_lock_all(dev); |
| crtc = drm_crtc_find(dev, crtc_req->crtc_id); |
| if (!crtc) { |
| DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
| ret = -ENOENT; |
| goto out; |
| } |
| DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
| |
| if (crtc_req->mode_valid) { |
| /* If we have a mode we need a framebuffer. */ |
| /* If we pass -1, set the mode with the currently bound fb */ |
| if (crtc_req->fb_id == -1) { |
| if (!crtc->primary->fb) { |
| DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
| ret = -EINVAL; |
| goto out; |
| } |
| fb = crtc->primary->fb; |
| /* Make refcounting symmetric with the lookup path. */ |
| drm_framebuffer_reference(fb); |
| } else { |
| fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); |
| if (!fb) { |
| DRM_DEBUG_KMS("Unknown FB ID%d\n", |
| crtc_req->fb_id); |
| ret = -ENOENT; |
| goto out; |
| } |
| } |
| |
| mode = drm_mode_create(dev); |
| if (!mode) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| ret = drm_mode_convert_umode(mode, &crtc_req->mode); |
| if (ret) { |
| DRM_DEBUG_KMS("Invalid mode\n"); |
| goto out; |
| } |
| |
| /* |
| * Check whether the primary plane supports the fb pixel format. |
| * Drivers not implementing the universal planes API use a |
| * default formats list provided by the DRM core which doesn't |
| * match real hardware capabilities. Skip the check in that |
| * case. |
| */ |
| if (!crtc->primary->format_default) { |
| ret = drm_plane_check_pixel_format(crtc->primary, |
| fb->pixel_format); |
| if (ret) { |
| char *format_name = drm_get_format_name(fb->pixel_format); |
| DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name); |
| kfree(format_name); |
| goto out; |
| } |
| } |
| |
| ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
| mode, fb); |
| if (ret) |
| goto out; |
| |
| } |
| |
| if (crtc_req->count_connectors == 0 && mode) { |
| DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
| DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
| crtc_req->count_connectors); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if (crtc_req->count_connectors > 0) { |
| u32 out_id; |
| |
| /* Avoid unbounded kernel memory allocation */ |
| if (crtc_req->count_connectors > config->num_connector) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| connector_set = kmalloc_array(crtc_req->count_connectors, |
| sizeof(struct drm_connector *), |
| GFP_KERNEL); |
| if (!connector_set) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| for (i = 0; i < crtc_req->count_connectors; i++) { |
| connector_set[i] = NULL; |
| set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
| if (get_user(out_id, &set_connectors_ptr[i])) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| connector = drm_connector_lookup(dev, out_id); |
| if (!connector) { |
| DRM_DEBUG_KMS("Connector id %d unknown\n", |
| out_id); |
| ret = -ENOENT; |
| goto out; |
| } |
| DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
| connector->base.id, |
| connector->name); |
| |
| connector_set[i] = connector; |
| } |
| } |
| |
| set.crtc = crtc; |
| set.x = crtc_req->x; |
| set.y = crtc_req->y; |
| set.mode = mode; |
| set.connectors = connector_set; |
| set.num_connectors = crtc_req->count_connectors; |
| set.fb = fb; |
| ret = drm_mode_set_config_internal(&set); |
| |
| out: |
| if (fb) |
| drm_framebuffer_unreference(fb); |
| |
| if (connector_set) { |
| for (i = 0; i < crtc_req->count_connectors; i++) { |
| if (connector_set[i]) |
| drm_connector_unreference(connector_set[i]); |
| } |
| } |
| kfree(connector_set); |
| drm_mode_destroy(dev, mode); |
| drm_modeset_unlock_all(dev); |
| return ret; |
| } |
| |
| /** |
| * drm_mode_cursor_universal - translate legacy cursor ioctl call into a |
| * universal plane handler call |
| * @crtc: crtc to update cursor for |
| * @req: data pointer for the ioctl |
| * @file_priv: drm file for the ioctl call |
| * |
| * Legacy cursor ioctl's work directly with driver buffer handles. To |
| * translate legacy ioctl calls into universal plane handler calls, we need to |
| * wrap the native buffer handle in a drm_framebuffer. |
| * |
| * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB |
| * buffer with a pitch of 4*width; the universal plane interface should be used |
| * directly in cases where the hardware can support other buffer settings and |
| * userspace wants to make use of these capabilities. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
| struct drm_mode_cursor2 *req, |
| struct drm_file *file_priv) |
| { |
| struct drm_device *dev = crtc->dev; |
| 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(!crtc->cursor); |
| WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->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 { |
| fb = crtc->cursor->fb; |
| if (fb) |
| drm_framebuffer_reference(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; |
| } |
| |
| /* |
| * setplane_internal will take care of deref'ing either the old or new |
| * framebuffer depending on success. |
| */ |
| ret = __setplane_internal(crtc->cursor, crtc, fb, |
| crtc_x, crtc_y, crtc_w, crtc_h, |
| 0, 0, src_w, src_h); |
| |
| /* 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; |
| 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, req->crtc_id); |
| if (!crtc) { |
| DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); |
| return -ENOENT; |
| } |
| |
| /* |
| * If this crtc has a universal cursor plane, call that plane's update |
| * handler rather than using legacy cursor handlers. |
| */ |
| drm_modeset_lock_crtc(crtc, crtc->cursor); |
| if (crtc->cursor) { |
| ret = drm_mode_cursor_universal(crtc, req, file_priv); |
| 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: |
| drm_modeset_unlock_crtc(crtc); |
| |
| return ret; |
| |
| } |
| |
| |
| /** |
| * drm_mode_cursor_ioctl - set CRTC's cursor configuration |
| * @dev: drm device for the ioctl |
| * @data: data pointer for the ioctl |
| * @file_priv: drm file for the ioctl call |
| * |
| * Set the cursor configuration based on user request. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| 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); |
| } |
| |
| /** |
| * drm_mode_cursor2_ioctl - set CRTC's cursor configuration |
| * @dev: drm device for the ioctl |
| * @data: data pointer for the ioctl |
| * @file_priv: drm file for the ioctl call |
| * |
| * 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. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| 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_crtc_set_obj_prop(struct drm_mode_object *obj, |
| struct drm_property *property, |
| uint64_t value) |
| { |
| int ret = -EINVAL; |
| struct drm_crtc *crtc = obj_to_crtc(obj); |
| |
| if (crtc->funcs->set_property) |
| ret = crtc->funcs->set_property(crtc, property, value); |
| if (!ret) |
| drm_object_property_set_value(obj, property, value); |
| |
| return ret; |
| } |
| |
| /** |
| * 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); |
| |
| /** |
| * drm_mode_crtc_set_gamma_size - set the gamma table size |
| * @crtc: CRTC to set the gamma table size for |
| * @gamma_size: size of the gamma table |
| * |
| * Drivers which support gamma tables should set this to the supported gamma |
| * table size when initializing the CRTC. Currently the drm core only supports a |
| * fixed gamma table size. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, |
| int gamma_size) |
| { |
| uint16_t *r_base, *g_base, *b_base; |
| int i; |
| |
| crtc->gamma_size = gamma_size; |
| |
| crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3, |
| GFP_KERNEL); |
| if (!crtc->gamma_store) { |
| crtc->gamma_size = 0; |
| return -ENOMEM; |
| } |
| |
| r_base = crtc->gamma_store; |
| g_base = r_base + gamma_size; |
| b_base = g_base + gamma_size; |
| for (i = 0; i < gamma_size; i++) { |
| r_base[i] = i << 8; |
| g_base[i] = i << 8; |
| b_base[i] = i << 8; |
| } |
| |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); |
| |
| /** |
| * drm_mode_gamma_set_ioctl - set the gamma table |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * Set the gamma table of a CRTC to the one passed in by the user. Userspace can |
| * inquire the required gamma table size through drm_mode_gamma_get_ioctl. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_gamma_set_ioctl(struct drm_device *dev, |
| void *data, struct drm_file *file_priv) |
| { |
| struct drm_mode_crtc_lut *crtc_lut = data; |
| struct drm_crtc *crtc; |
| void *r_base, *g_base, *b_base; |
| int size; |
| int ret = 0; |
| |
| if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| return -EINVAL; |
| |
| drm_modeset_lock_all(dev); |
| crtc = drm_crtc_find(dev, crtc_lut->crtc_id); |
| if (!crtc) { |
| ret = -ENOENT; |
| goto out; |
| } |
| |
| if (crtc->funcs->gamma_set == NULL) { |
| ret = -ENOSYS; |
| goto out; |
| } |
| |
| /* memcpy into gamma store */ |
| if (crtc_lut->gamma_size != crtc->gamma_size) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| size = crtc_lut->gamma_size * (sizeof(uint16_t)); |
| r_base = crtc->gamma_store; |
| if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| g_base = r_base + size; |
| if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| b_base = g_base + size; |
| if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| ret = crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size); |
| |
| out: |
| drm_modeset_unlock_all(dev); |
| return ret; |
| |
| } |
| |
| /** |
| * drm_mode_gamma_get_ioctl - get the gamma table |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * Copy the current gamma table into the storage provided. This also provides |
| * the gamma table size the driver expects, which can be used to size the |
| * allocated storage. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_gamma_get_ioctl(struct drm_device *dev, |
| void *data, struct drm_file *file_priv) |
| { |
| struct drm_mode_crtc_lut *crtc_lut = data; |
| struct drm_crtc *crtc; |
| void *r_base, *g_base, *b_base; |
| int size; |
| int ret = 0; |
| |
| if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| return -EINVAL; |
| |
| drm_modeset_lock_all(dev); |
| crtc = drm_crtc_find(dev, crtc_lut->crtc_id); |
| if (!crtc) { |
| ret = -ENOENT; |
| goto out; |
| } |
| |
| /* memcpy into gamma store */ |
| if (crtc_lut->gamma_size != crtc->gamma_size) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| size = crtc_lut->gamma_size * (sizeof(uint16_t)); |
| r_base = crtc->gamma_store; |
| if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| g_base = r_base + size; |
| if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| b_base = g_base + size; |
| if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| out: |
| drm_modeset_unlock_all(dev); |
| return ret; |
| } |
| |
| /** |
| * drm_mode_page_flip_ioctl - schedule an asynchronous fb update |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * This schedules an asynchronous update on a given CRTC, called page flip. |
| * Optionally a drm event is generated to signal the completion of the event. |
| * Generic drivers cannot assume that a pageflip with changed framebuffer |
| * properties (including driver specific metadata like tiling layout) will work, |
| * but some drivers support e.g. pixel format changes through the pageflip |
| * ioctl. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| 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_framebuffer *fb = NULL; |
| struct drm_pending_vblank_event *e = NULL; |
| u32 target_vblank = page_flip->sequence; |
| int ret = -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, page_flip->crtc_id); |
| if (!crtc) |
| return -ENOENT; |
| |
| if (crtc->funcs->page_flip_target) { |
| u32 current_vblank; |
| int r; |
| |
| r = drm_crtc_vblank_get(crtc); |
| if (r) |
| return r; |
| |
| current_vblank = 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_lock_crtc(crtc, crtc->primary); |
| if (crtc->primary->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, page_flip->fb_id); |
| if (!fb) { |
| ret = -ENOENT; |
| goto out; |
| } |
| |
| if (crtc->state) { |
| const struct drm_plane_state *state = crtc->primary->state; |
| |
| ret = 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 (crtc->primary->fb->pixel_format != fb->pixel_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.user_data = page_flip->user_data; |
| ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
| if (ret) { |
| kfree(e); |
| goto out; |
| } |
| } |
| |
| crtc->primary->old_fb = crtc->primary->fb; |
| if (crtc->funcs->page_flip_target) |
| ret = crtc->funcs->page_flip_target(crtc, fb, e, |
| page_flip->flags, |
| target_vblank); |
| else |
| ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); |
| 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. */ |
| crtc->primary->old_fb = NULL; |
| } else { |
| crtc->primary->fb = fb; |
| /* Unref only the old framebuffer. */ |
| fb = NULL; |
| } |
| |
| out: |
| if (ret) |
| drm_crtc_vblank_put(crtc); |
| if (fb) |
| drm_framebuffer_unreference(fb); |
| if (crtc->primary->old_fb) |
| drm_framebuffer_unreference(crtc->primary->old_fb); |
| crtc->primary->old_fb = NULL; |
| drm_modeset_unlock_crtc(crtc); |
| |
| return ret; |
| } |
| |
| /** |
| * drm_mode_config_reset - call ->reset callbacks |
| * @dev: drm device |
| * |
| * This functions calls all the crtc's, encoder's and connector's ->reset |
| * callback. Drivers can use this in e.g. their driver load or resume code to |
| * reset hardware and software state. |
| */ |
| void drm_mode_config_reset(struct drm_device *dev) |
| { |
| struct drm_crtc *crtc; |
| struct drm_plane *plane; |
| struct drm_encoder *encoder; |
| struct drm_connector *connector; |
| |
| drm_for_each_plane(plane, dev) |
| if (plane->funcs->reset) |
| plane->funcs->reset(plane); |
| |
| drm_for_each_crtc(crtc, dev) |
| if (crtc->funcs->reset) |
| crtc->funcs->reset(crtc); |
| |
| drm_for_each_encoder(encoder, dev) |
| if (encoder->funcs->reset) |
| encoder->funcs->reset(encoder); |
| |
| mutex_lock(&dev->mode_config.mutex); |
| drm_for_each_connector(connector, dev) |
| if (connector->funcs->reset) |
| connector->funcs->reset(connector); |
| mutex_unlock(&dev->mode_config.mutex); |
| } |
| EXPORT_SYMBOL(drm_mode_config_reset); |
| |
| /** |
| * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * This creates a new dumb buffer in the driver's backing storage manager (GEM, |
| * TTM or something else entirely) and returns the resulting buffer handle. This |
| * handle can then be wrapped up into a framebuffer modeset object. |
| * |
| * Note that userspace is not allowed to use such objects for render |
| * acceleration - drivers must create their own private ioctls for such a use |
| * case. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_create_dumb_ioctl(struct drm_device *dev, |
| void *data, struct drm_file *file_priv) |
| { |
| struct drm_mode_create_dumb *args = data; |
| u32 cpp, stride, size; |
| |
| if (!dev->driver->dumb_create) |
| return -ENOSYS; |
| if (!args->width || !args->height || !args->bpp) |
| return -EINVAL; |
| |
| /* overflow checks for 32bit size calculations */ |
| /* NOTE: DIV_ROUND_UP() can overflow */ |
| cpp = DIV_ROUND_UP(args->bpp, 8); |
| if (!cpp || cpp > 0xffffffffU / args->width) |
| return -EINVAL; |
| stride = cpp * args->width; |
| if (args->height > 0xffffffffU / stride) |
| return -EINVAL; |
| |
| /* test for wrap-around */ |
| size = args->height * stride; |
| if (PAGE_ALIGN(size) == 0) |
| return -EINVAL; |
| |
| /* |
| * handle, pitch and size are output parameters. Zero them out to |
| * prevent drivers from accidentally using uninitialized data. Since |
| * not all existing userspace is clearing these fields properly we |
| * cannot reject IOCTL with garbage in them. |
| */ |
| args->handle = 0; |
| args->pitch = 0; |
| args->size = 0; |
| |
| return dev->driver->dumb_create(file_priv, dev, args); |
| } |
| |
| /** |
| * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * Allocate an offset in the drm device node's address space to be able to |
| * memory map a dumb buffer. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, |
| void *data, struct drm_file *file_priv) |
| { |
| struct drm_mode_map_dumb *args = data; |
| |
| /* call driver ioctl to get mmap offset */ |
| if (!dev->driver->dumb_map_offset) |
| return -ENOSYS; |
| |
| return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); |
| } |
| |
| /** |
| * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer |
| * @dev: DRM device |
| * @data: ioctl data |
| * @file_priv: DRM file info |
| * |
| * This destroys the userspace handle for the given dumb backing storage buffer. |
| * Since buffer objects must be reference counted in the kernel a buffer object |
| * won't be immediately freed if a framebuffer modeset object still uses it. |
| * |
| * Called by the user via ioctl. |
| * |
| * Returns: |
| * Zero on success, negative errno on failure. |
| */ |
| int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, |
| void *data, struct drm_file *file_priv) |
| { |
| struct drm_mode_destroy_dumb *args = data; |
| |
| if (!dev->driver->dumb_destroy) |
| return -ENOSYS; |
| |
| return dev->driver->dumb_destroy(file_priv, dev, args->handle); |
| } |
| |
| /** |
| * drm_rotation_simplify() - Try to simplify the rotation |
| * @rotation: Rotation to be simplified |
| * @supported_rotations: Supported rotations |
| * |
| * Attempt to simplify the rotation to a form that is supported. |
| * Eg. if the hardware supports everything except DRM_REFLECT_X |
| * one could call this function like this: |
| * |
| * drm_rotation_simplify(rotation, DRM_ROTATE_0 | |
| * DRM_ROTATE_90 | DRM_ROTATE_180 | |
| * DRM_ROTATE_270 | DRM_REFLECT_Y); |
| * |
| * to eliminate the DRM_ROTATE_X flag. Depending on what kind of |
| * transforms the hardware supports, this function may not |
| * be able to produce a supported transform, so the caller should |
| * check the result afterwards. |
| */ |
| unsigned int drm_rotation_simplify(unsigned int rotation, |
| unsigned int supported_rotations) |
| { |
| if (rotation & ~supported_rotations) { |
| rotation ^= DRM_REFLECT_X | DRM_REFLECT_Y; |
| rotation = (rotation & DRM_REFLECT_MASK) | |
| BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4); |
| } |
| |
| return rotation; |
| } |
| EXPORT_SYMBOL(drm_rotation_simplify); |
| |
| /** |
| * drm_mode_config_init - initialize DRM mode_configuration structure |
| * @dev: DRM device |
| * |
| * Initialize @dev's mode_config structure, used for tracking the graphics |
| * configuration of @dev. |
| * |
| * Since this initializes the modeset locks, no locking is possible. Which is no |
| * problem, since this should happen single threaded at init time. It is the |
| * driver's problem to ensure this guarantee. |
| * |
| */ |
| void drm_mode_config_init(struct drm_device *dev) |
| { |
| mutex_init(&dev->mode_config.mutex); |
| drm_modeset_lock_init(&dev->mode_config.connection_mutex); |
| mutex_init(&dev->mode_config.idr_mutex); |
| mutex_init(&dev->mode_config.fb_lock); |
| mutex_init(&dev->mode_config.blob_lock); |
| INIT_LIST_HEAD(&dev->mode_config.fb_list); |
| INIT_LIST_HEAD(&dev->mode_config.crtc_list); |
| INIT_LIST_HEAD(&dev->mode_config.connector_list); |
| INIT_LIST_HEAD(&dev->mode_config.encoder_list); |
| INIT_LIST_HEAD(&dev->mode_config.property_list); |
| INIT_LIST_HEAD(&dev->mode_config.property_blob_list); |
| INIT_LIST_HEAD(&dev->mode_config.plane_list); |
| idr_init(&dev->mode_config.crtc_idr); |
| idr_init(&dev->mode_config.tile_idr); |
| ida_init(&dev->mode_config.connector_ida); |
| |
| drm_modeset_lock_all(dev); |
| drm_mode_create_standard_properties(dev); |
| drm_modeset_unlock_all(dev); |
| |
| /* Just to be sure */ |
| dev->mode_config.num_fb = 0; |
| dev->mode_config.num_connector = 0; |
| dev->mode_config.num_crtc = 0; |
| dev->mode_config.num_encoder = 0; |
| dev->mode_config.num_overlay_plane = 0; |
| dev->mode_config.num_total_plane = 0; |
| } |
| EXPORT_SYMBOL(drm_mode_config_init); |
| |
| /** |
| * drm_mode_config_cleanup - free up DRM mode_config info |
| * @dev: DRM device |
| * |
| * Free up all the connectors and CRTCs associated with this DRM device, then |
| * free up the framebuffers and associated buffer objects. |
| * |
| * Note that since this /should/ happen single-threaded at driver/device |
| * teardown time, no locking is required. It's the driver's job to ensure that |
| * this guarantee actually holds true. |
| * |
| * FIXME: cleanup any dangling user buffer objects too |
| */ |
| void drm_mode_config_cleanup(struct drm_device *dev) |
| { |
| struct drm_connector *connector, *ot; |
| struct drm_crtc *crtc, *ct; |
| struct drm_encoder *encoder, *enct; |
| struct drm_framebuffer *fb, *fbt; |
| struct drm_property *property, *pt; |
| struct drm_property_blob *blob, *bt; |
| struct drm_plane *plane, *plt; |
| |
| list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, |
| head) { |
| encoder->funcs->destroy(encoder); |
| } |
| |
| list_for_each_entry_safe(connector, ot, |
| &dev->mode_config.connector_list, head) { |
| connector->funcs->destroy(connector); |
| } |
| |
| list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, |
| head) { |
| drm_property_destroy(dev, property); |
| } |
| |
| list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, |
| head) { |
| plane->funcs->destroy(plane); |
| } |
| |
| list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { |
| crtc->funcs->destroy(crtc); |
| } |
| |
| list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, |
| head_global) { |
| drm_property_unreference_blob(blob); |
| } |
| |
| /* |
| * Single-threaded teardown context, so it's not required to grab the |
| * fb_lock to protect against concurrent fb_list access. Contrary, it |
| * would actually deadlock with the drm_framebuffer_cleanup function. |
| * |
| * Also, if there are any framebuffers left, that's a driver leak now, |
| * so politely WARN about this. |
| */ |
| WARN_ON(!list_empty(&dev->mode_config.fb_list)); |
| list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { |
| drm_framebuffer_free(&fb->base.refcount); |
| } |
| |
| ida_destroy(&dev->mode_config.connector_ida); |
| idr_destroy(&dev->mode_config.tile_idr); |
| idr_destroy(&dev->mode_config.crtc_idr); |
| drm_modeset_lock_fini(&dev->mode_config.connection_mutex); |
| } |
| EXPORT_SYMBOL(drm_mode_config_cleanup); |
| |
| struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, |
| unsigned int supported_rotations) |
| { |
| static const struct drm_prop_enum_list props[] = { |
| { __builtin_ffs(DRM_ROTATE_0) - 1, "rotate-0" }, |
| { __builtin_ffs(DRM_ROTATE_90) - 1, "rotate-90" }, |
| { __builtin_ffs(DRM_ROTATE_180) - 1, "rotate-180" }, |
| { __builtin_ffs(DRM_ROTATE_270) - 1, "rotate-270" }, |
| { __builtin_ffs(DRM_REFLECT_X) - 1, "reflect-x" }, |
| { __builtin_ffs(DRM_REFLECT_Y) - 1, "reflect-y" }, |
| }; |
| |
| return drm_property_create_bitmask(dev, 0, "rotation", |
| props, ARRAY_SIZE(props), |
| supported_rotations); |
| } |
| EXPORT_SYMBOL(drm_mode_create_rotation_property); |
| |
| /** |
| * DOC: Tile group |
| * |
| * Tile groups are used to represent tiled monitors with a unique |
| * integer identifier. Tiled monitors using DisplayID v1.3 have |
| * a unique 8-byte handle, we store this in a tile group, so we |
| * have a common identifier for all tiles in a monitor group. |
| */ |
| static void drm_tile_group_free(struct kref *kref) |
| { |
| struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); |
| struct drm_device *dev = tg->dev; |
| mutex_lock(&dev->mode_config.idr_mutex); |
| idr_remove(&dev->mode_config.tile_idr, tg->id); |
| mutex_unlock(&dev->mode_config.idr_mutex); |
| kfree(tg); |
| } |
| |
| /** |
| * drm_mode_put_tile_group - drop a reference to a tile group. |
| * @dev: DRM device |
| * @tg: tile group to drop reference to. |
| * |
| * drop reference to tile group and free if 0. |
| */ |
| void drm_mode_put_tile_group(struct drm_device *dev, |
| struct drm_tile_group *tg) |
| { |
| kref_put(&tg->refcount, drm_tile_group_free); |
| } |
| |
| /** |
| * drm_mode_get_tile_group - get a reference to an existing tile group |
| * @dev: DRM device |
| * @topology: 8-bytes unique per monitor. |
| * |
| * Use the unique bytes to get a reference to an existing tile group. |
| * |
| * RETURNS: |
| * tile group or NULL if not found. |
| */ |
| struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, |
| char topology[8]) |
| { |
| struct drm_tile_group *tg; |
| int id; |
| mutex_lock(&dev->mode_config.idr_mutex); |
| idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { |
| if (!memcmp(tg->group_data, topology, 8)) { |
| if (!kref_get_unless_zero(&tg->refcount)) |
| tg = NULL; |
| mutex_unlock(&dev->mode_config.idr_mutex); |
| return tg; |
| } |
| } |
| mutex_unlock(&dev->mode_config.idr_mutex); |
| return NULL; |
| } |
| EXPORT_SYMBOL(drm_mode_get_tile_group); |
| |
| /** |
| * drm_mode_create_tile_group - create a tile group from a displayid description |
| * @dev: DRM device |
| * @topology: 8-bytes unique per monitor. |
| * |
| * Create a tile group for the unique monitor, and get a unique |
| * identifier for the tile group. |
| * |
| * RETURNS: |
| * new tile group or error. |
| */ |
| struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, |
| char topology[8]) |
| { |
| struct drm_tile_group *tg; |
| int ret; |
| |
| tg = kzalloc(sizeof(*tg), GFP_KERNEL); |
| if (!tg) |
| return ERR_PTR(-ENOMEM); |
| |
| kref_init(&tg->refcount); |
| memcpy(tg->group_data, topology, 8); |
| tg->dev = dev; |
| |
| mutex_lock(&dev->mode_config.idr_mutex); |
| ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); |
| if (ret >= 0) { |
| tg->id = ret; |
| } else { |
| kfree(tg); |
| tg = ERR_PTR(ret); |
| } |
| |
| mutex_unlock(&dev->mode_config.idr_mutex); |
| return tg; |
| } |
| EXPORT_SYMBOL(drm_mode_create_tile_group); |
| |
| /** |
| * drm_crtc_enable_color_mgmt - enable color management properties |
| * @crtc: DRM CRTC |
| * @degamma_lut_size: the size of the degamma lut (before CSC) |
| * @has_ctm: whether to attach ctm_property for CSC matrix |
| * @gamma_lut_size: the size of the gamma lut (after CSC) |
| * |
| * This function lets the driver enable the color correction |
| * properties on a CRTC. This includes 3 degamma, csc and gamma |
| * properties that userspace can set and 2 size properties to inform |
| * the userspace of the lut sizes. Each of the properties are |
| * optional. The gamma and degamma properties are only attached if |
| * their size is not 0 and ctm_property is only attached if has_ctm is |
| * true. |
| */ |
| void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, |
| uint degamma_lut_size, |
| bool has_ctm, |
| uint gamma_lut_size) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| |
| if (degamma_lut_size) { |
| drm_object_attach_property(&crtc->base, |
| config->degamma_lut_property, 0); |
| drm_object_attach_property(&crtc->base, |
| config->degamma_lut_size_property, |
| degamma_lut_size); |
| } |
| |
| if (has_ctm) |
| drm_object_attach_property(&crtc->base, |
| config->ctm_property, 0); |
| |
| if (gamma_lut_size) { |
| drm_object_attach_property(&crtc->base, |
| config->gamma_lut_property, 0); |
| drm_object_attach_property(&crtc->base, |
| config->gamma_lut_size_property, |
| gamma_lut_size); |
| } |
| } |
| EXPORT_SYMBOL(drm_crtc_enable_color_mgmt); |