/* * Copyright (c) 2006-2008 Intel Corporation * Copyright (c) 2007 Dave Airlie * 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 * Dave Airlie * Jesse Barnes */ #include #include #include #include #include #include #include #include /** * drm_modeset_lock_all - take all modeset locks * @dev: drm device * * This function takes all modeset locks, suitable where a more fine-grained * scheme isn't (yet) implemented. */ void drm_modeset_lock_all(struct drm_device *dev) { struct drm_crtc *crtc; mutex_lock(&dev->mode_config.mutex); list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); } EXPORT_SYMBOL(drm_modeset_lock_all); /** * drm_modeset_unlock_all - drop all modeset locks * @dev: device */ void drm_modeset_unlock_all(struct drm_device *dev) { struct drm_crtc *crtc; list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) mutex_unlock(&crtc->mutex); mutex_unlock(&dev->mode_config.mutex); } EXPORT_SYMBOL(drm_modeset_unlock_all); /** * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked * @dev: device */ void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) { struct drm_crtc *crtc; /* Locking is currently fubar in the panic handler. */ if (oops_in_progress) return; list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) WARN_ON(!mutex_is_locked(&crtc->mutex)); WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); } EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); /* Avoid boilerplate. I'm tired of typing. */ #define DRM_ENUM_NAME_FN(fnname, list) \ const char *fnname(int val) \ { \ int i; \ for (i = 0; i < ARRAY_SIZE(list); i++) { \ if (list[i].type == val) \ return list[i].name; \ } \ return "(unknown)"; \ } /* * Global properties */ static const struct drm_prop_enum_list drm_dpms_enum_list[] = { { DRM_MODE_DPMS_ON, "On" }, { DRM_MODE_DPMS_STANDBY, "Standby" }, { DRM_MODE_DPMS_SUSPEND, "Suspend" }, { DRM_MODE_DPMS_OFF, "Off" } }; DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) /* * Optional properties */ static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = { { DRM_MODE_SCALE_NONE, "None" }, { DRM_MODE_SCALE_FULLSCREEN, "Full" }, { DRM_MODE_SCALE_CENTER, "Center" }, { DRM_MODE_SCALE_ASPECT, "Full aspect" }, }; static const struct drm_prop_enum_list drm_dithering_mode_enum_list[] = { { DRM_MODE_DITHERING_OFF, "Off" }, { DRM_MODE_DITHERING_ON, "On" }, { DRM_MODE_DITHERING_AUTO, "Automatic" }, }; /* * Non-global properties, but "required" for certain connectors. */ static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ }; DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ }; DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, drm_dvi_i_subconnector_enum_list) static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ }; DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ }; DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, drm_tv_subconnector_enum_list) static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = { { DRM_MODE_DIRTY_OFF, "Off" }, { DRM_MODE_DIRTY_ON, "On" }, { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, }; struct drm_conn_prop_enum_list { int type; const char *name; int count; }; /* * Connector and encoder types. */ static struct drm_conn_prop_enum_list drm_connector_enum_list[] = { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 }, { DRM_MODE_CONNECTOR_VGA, "VGA", 0 }, { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 }, { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 }, { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 }, { DRM_MODE_CONNECTOR_Composite, "Composite", 0 }, { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 }, { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 }, { DRM_MODE_CONNECTOR_Component, "Component", 0 }, { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 }, { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 }, { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 }, { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 }, { DRM_MODE_CONNECTOR_TV, "TV", 0 }, { DRM_MODE_CONNECTOR_eDP, "eDP", 0 }, { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0}, }; static const struct drm_prop_enum_list drm_encoder_enum_list[] = { { DRM_MODE_ENCODER_NONE, "None" }, { DRM_MODE_ENCODER_DAC, "DAC" }, { DRM_MODE_ENCODER_TMDS, "TMDS" }, { DRM_MODE_ENCODER_LVDS, "LVDS" }, { DRM_MODE_ENCODER_TVDAC, "TV" }, { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, }; const char *drm_get_encoder_name(const struct drm_encoder *encoder) { static char buf[32]; snprintf(buf, 32, "%s-%d", drm_encoder_enum_list[encoder->encoder_type].name, encoder->base.id); return buf; } EXPORT_SYMBOL(drm_get_encoder_name); const char *drm_get_connector_name(const struct drm_connector *connector) { static char buf[32]; snprintf(buf, 32, "%s-%d", drm_connector_enum_list[connector->connector_type].name, connector->connector_type_id); return buf; } EXPORT_SYMBOL(drm_get_connector_name); const char *drm_get_connector_status_name(enum drm_connector_status status) { if (status == connector_status_connected) return "connected"; else if (status == connector_status_disconnected) return "disconnected"; else return "unknown"; } EXPORT_SYMBOL(drm_get_connector_status_name); static char printable_char(int c) { return isascii(c) && isprint(c) ? c : '?'; } const char *drm_get_format_name(uint32_t format) { static char buf[32]; snprintf(buf, sizeof(buf), "%c%c%c%c %s-endian (0x%08x)", printable_char(format & 0xff), printable_char((format >> 8) & 0xff), printable_char((format >> 16) & 0xff), printable_char((format >> 24) & 0x7f), format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little", format); return buf; } EXPORT_SYMBOL(drm_get_format_name); /** * drm_mode_object_get - allocate a new modeset identifier * @dev: DRM device * @obj: object pointer, used to generate unique ID * @obj_type: object type * * Create a unique identifier based on @ptr in @dev's identifier space. Used * for tracking modes, CRTCs and connectors. * * RETURNS: * New unique (relative to other objects in @dev) integer identifier for the * object. */ static int drm_mode_object_get(struct drm_device *dev, struct drm_mode_object *obj, uint32_t obj_type) { int ret; mutex_lock(&dev->mode_config.idr_mutex); ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL); if (ret >= 0) { /* * Set up the object linking under the protection of the idr * lock so that other users can't see inconsistent state. */ obj->id = ret; obj->type = obj_type; } mutex_unlock(&dev->mode_config.idr_mutex); return ret < 0 ? ret : 0; } /** * drm_mode_object_put - free a modeset identifer * @dev: DRM device * @object: object to free * * Free @id from @dev's unique identifier pool. */ static void drm_mode_object_put(struct drm_device *dev, struct drm_mode_object *object) { mutex_lock(&dev->mode_config.idr_mutex); idr_remove(&dev->mode_config.crtc_idr, object->id); mutex_unlock(&dev->mode_config.idr_mutex); } /** * drm_mode_object_find - look up a drm object with static lifetime * @dev: drm device * @id: id of the mode object * @type: type of the mode object * * Note that framebuffers cannot be looked up with this functions - since those * are reference counted, they need special treatment. */ struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type) { struct drm_mode_object *obj = NULL; /* Framebuffers are reference counted and need their own lookup * function.*/ WARN_ON(type == DRM_MODE_OBJECT_FB); mutex_lock(&dev->mode_config.idr_mutex); obj = idr_find(&dev->mode_config.crtc_idr, id); if (!obj || (obj->type != type) || (obj->id != id)) obj = NULL; mutex_unlock(&dev->mode_config.idr_mutex); return obj; } EXPORT_SYMBOL(drm_mode_object_find); /** * drm_framebuffer_init - initialize a framebuffer * @dev: DRM device * @fb: framebuffer to be initialized * @funcs: ... with these functions * * Allocates an ID for the framebuffer's parent mode object, sets its mode * functions & device file and adds it to the master fd list. * * IMPORTANT: * This functions publishes the fb and makes it available for concurrent access * by other users. Which means by this point the fb _must_ be fully set up - * since all the fb attributes are invariant over its lifetime, no further * locking but only correct reference counting is required. * * RETURNS: * Zero on success, error code on failure. */ int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, const struct drm_framebuffer_funcs *funcs) { int ret; mutex_lock(&dev->mode_config.fb_lock); kref_init(&fb->refcount); INIT_LIST_HEAD(&fb->filp_head); fb->dev = dev; fb->funcs = funcs; ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); if (ret) goto out; /* Grab the idr reference. */ drm_framebuffer_reference(fb); dev->mode_config.num_fb++; list_add(&fb->head, &dev->mode_config.fb_list); out: mutex_unlock(&dev->mode_config.fb_lock); return 0; } EXPORT_SYMBOL(drm_framebuffer_init); static void drm_framebuffer_free(struct kref *kref) { struct drm_framebuffer *fb = container_of(kref, struct drm_framebuffer, refcount); fb->funcs->destroy(fb); } static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, uint32_t id) { struct drm_mode_object *obj = NULL; struct drm_framebuffer *fb; mutex_lock(&dev->mode_config.idr_mutex); obj = idr_find(&dev->mode_config.crtc_idr, id); if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) fb = NULL; else fb = obj_to_fb(obj); mutex_unlock(&dev->mode_config.idr_mutex); return fb; } /** * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference * @dev: drm device * @id: id of the fb object * * If successful, this grabs an additional reference to the framebuffer - * callers need to make sure to eventually unreference the returned framebuffer * again. */ struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, uint32_t id) { struct drm_framebuffer *fb; mutex_lock(&dev->mode_config.fb_lock); fb = __drm_framebuffer_lookup(dev, id); if (fb) drm_framebuffer_reference(fb); mutex_unlock(&dev->mode_config.fb_lock); return fb; } EXPORT_SYMBOL(drm_framebuffer_lookup); /** * drm_framebuffer_unreference - unref a framebuffer * @fb: framebuffer to unref * * This functions decrements the fb's refcount and frees it if it drops to zero. */ void drm_framebuffer_unreference(struct drm_framebuffer *fb) { DRM_DEBUG("FB ID: %d\n", fb->base.id); kref_put(&fb->refcount, drm_framebuffer_free); } EXPORT_SYMBOL(drm_framebuffer_unreference); /** * drm_framebuffer_reference - incr the fb refcnt * @fb: framebuffer */ void drm_framebuffer_reference(struct drm_framebuffer *fb) { DRM_DEBUG("FB ID: %d\n", fb->base.id); kref_get(&fb->refcount); } EXPORT_SYMBOL(drm_framebuffer_reference); static void drm_framebuffer_free_bug(struct kref *kref) { BUG(); } static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) { DRM_DEBUG("FB ID: %d\n", fb->base.id); kref_put(&fb->refcount, drm_framebuffer_free_bug); } /* dev->mode_config.fb_lock must be held! */ static void __drm_framebuffer_unregister(struct drm_device *dev, struct drm_framebuffer *fb) { mutex_lock(&dev->mode_config.idr_mutex); idr_remove(&dev->mode_config.crtc_idr, fb->base.id); mutex_unlock(&dev->mode_config.idr_mutex); fb->base.id = 0; __drm_framebuffer_unreference(fb); } /** * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr * @fb: fb to unregister * * Drivers need to call this when cleaning up driver-private framebuffers, e.g. * those used for fbdev. Note that the caller must hold a reference of it's own, * i.e. the object may not be destroyed through this call (since it'll lead to a * locking inversion). */ void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) { struct drm_device *dev = fb->dev; mutex_lock(&dev->mode_config.fb_lock); /* Mark fb as reaped and drop idr ref. */ __drm_framebuffer_unregister(dev, fb); mutex_unlock(&dev->mode_config.fb_lock); } EXPORT_SYMBOL(drm_framebuffer_unregister_private); /** * drm_framebuffer_cleanup - remove a framebuffer object * @fb: framebuffer to remove * * Cleanup references to a user-created framebuffer. This function is intended * to be used from the drivers ->destroy callback. * * Note that this function does not remove the fb from active usuage - if it is * still used anywhere, hilarity can ensue since userspace could call getfb on * the id and get back -EINVAL. Obviously no concern at driver unload time. * * Also, the framebuffer will not be removed from the lookup idr - for * user-created framebuffers this will happen in in the rmfb ioctl. For * driver-private objects (e.g. for fbdev) drivers need to explicitly call * drm_framebuffer_unregister_private. */ void drm_framebuffer_cleanup(struct drm_framebuffer *fb) { struct drm_device *dev = fb->dev; mutex_lock(&dev->mode_config.fb_lock); list_del(&fb->head); dev->mode_config.num_fb--; mutex_unlock(&dev->mode_config.fb_lock); } EXPORT_SYMBOL(drm_framebuffer_cleanup); /** * drm_framebuffer_remove - remove and unreference a framebuffer object * @fb: framebuffer to remove * * Scans all the CRTCs and planes in @dev's mode_config. If they're * using @fb, removes it, setting it to NULL. Then drops the reference to the * passed-in framebuffer. Might take the modeset locks. * * Note that this function optimizes the cleanup away if the caller holds the * last reference to the framebuffer. It is also guaranteed to not take the * modeset locks in this case. */ void drm_framebuffer_remove(struct drm_framebuffer *fb) { struct drm_device *dev = fb->dev; struct drm_crtc *crtc; struct drm_plane *plane; struct drm_mode_set set; int ret; WARN_ON(!list_empty(&fb->filp_head)); /* * drm ABI mandates that we remove any deleted framebuffers from active * useage. But since most sane clients only remove framebuffers they no * longer need, try to optimize this away. * * Since we're holding a reference ourselves, observing a refcount of 1 * means that we're the last holder and can skip it. Also, the refcount * can never increase from 1 again, so we don't need any barriers or * locks. * * Note that userspace could try to race with use and instate a new * usage _after_ we've cleared all current ones. End result will be an * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot * in this manner. */ if (atomic_read(&fb->refcount.refcount) > 1) { drm_modeset_lock_all(dev); /* remove from any CRTC */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { if (crtc->fb == fb) { /* should turn off the crtc */ memset(&set, 0, sizeof(struct drm_mode_set)); set.crtc = crtc; set.fb = NULL; ret = drm_mode_set_config_internal(&set); if (ret) DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); } } list_for_each_entry(plane, &dev->mode_config.plane_list, head) { if (plane->fb == fb) drm_plane_force_disable(plane); } drm_modeset_unlock_all(dev); } drm_framebuffer_unreference(fb); } EXPORT_SYMBOL(drm_framebuffer_remove); /** * drm_crtc_init - Initialise a new CRTC object * @dev: DRM device * @crtc: CRTC object to init * @funcs: callbacks for the new CRTC * * 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(struct drm_device *dev, struct drm_crtc *crtc, const struct drm_crtc_funcs *funcs) { int ret; crtc->dev = dev; crtc->funcs = funcs; crtc->invert_dimensions = false; drm_modeset_lock_all(dev); mutex_init(&crtc->mutex); mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); if (ret) goto out; crtc->base.properties = &crtc->properties; list_add_tail(&crtc->head, &dev->mode_config.crtc_list); dev->mode_config.num_crtc++; out: drm_modeset_unlock_all(dev); return ret; } EXPORT_SYMBOL(drm_crtc_init); /** * 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; kfree(crtc->gamma_store); crtc->gamma_store = NULL; drm_mode_object_put(dev, &crtc->base); list_del(&crtc->head); dev->mode_config.num_crtc--; } EXPORT_SYMBOL(drm_crtc_cleanup); /** * drm_mode_probed_add - add a mode to a connector's probed mode list * @connector: connector the new mode * @mode: mode data * * Add @mode to @connector's mode list for later use. */ void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode) { list_add_tail(&mode->head, &connector->probed_modes); } EXPORT_SYMBOL(drm_mode_probed_add); /** * drm_mode_remove - remove and free a mode * @connector: connector list to modify * @mode: mode to remove * * Remove @mode from @connector's mode list, then free it. */ void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode) { list_del(&mode->head); drm_mode_destroy(connector->dev, mode); } EXPORT_SYMBOL(drm_mode_remove); /** * drm_connector_init - Init a preallocated connector * @dev: DRM device * @connector: the connector to init * @funcs: callbacks for this connector * @connector_type: user visible type of the connector * * Initialises a preallocated connector. Connectors should be * subclassed as part of driver connector objects. * * RETURNS: * Zero on success, error code on failure. */ int drm_connector_init(struct drm_device *dev, struct drm_connector *connector, const struct drm_connector_funcs *funcs, int connector_type) { int ret; drm_modeset_lock_all(dev); ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); if (ret) goto out; connector->base.properties = &connector->properties; connector->dev = dev; connector->funcs = funcs; connector->connector_type = connector_type; connector->connector_type_id = ++drm_connector_enum_list[connector_type].count; /* TODO */ INIT_LIST_HEAD(&connector->probed_modes); INIT_LIST_HEAD(&connector->modes); connector->edid_blob_ptr = NULL; connector->status = connector_status_unknown; list_add_tail(&connector->head, &dev->mode_config.connector_list); dev->mode_config.num_connector++; if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) drm_object_attach_property(&connector->base, dev->mode_config.edid_property, 0); drm_object_attach_property(&connector->base, dev->mode_config.dpms_property, 0); out: drm_modeset_unlock_all(dev); return ret; } EXPORT_SYMBOL(drm_connector_init); /** * drm_connector_cleanup - cleans up an initialised connector * @connector: connector to cleanup * * Cleans up the connector but doesn't free the object. */ void drm_connector_cleanup(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct drm_display_mode *mode, *t; list_for_each_entry_safe(mode, t, &connector->probed_modes, head) drm_mode_remove(connector, mode); list_for_each_entry_safe(mode, t, &connector->modes, head) drm_mode_remove(connector, mode); drm_mode_object_put(dev, &connector->base); list_del(&connector->head); dev->mode_config.num_connector--; } EXPORT_SYMBOL(drm_connector_cleanup); void drm_connector_unplug_all(struct drm_device *dev) { struct drm_connector *connector; /* taking the mode config mutex ends up in a clash with sysfs */ list_for_each_entry(connector, &dev->mode_config.connector_list, head) drm_sysfs_connector_remove(connector); } EXPORT_SYMBOL(drm_connector_unplug_all); int drm_encoder_init(struct drm_device *dev, struct drm_encoder *encoder, const struct drm_encoder_funcs *funcs, int encoder_type) { int ret; drm_modeset_lock_all(dev); ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); if (ret) goto out; encoder->dev = dev; encoder->encoder_type = encoder_type; encoder->funcs = funcs; list_add_tail(&encoder->head, &dev->mode_config.encoder_list); dev->mode_config.num_encoder++; out: drm_modeset_unlock_all(dev); return ret; } EXPORT_SYMBOL(drm_encoder_init); void drm_encoder_cleanup(struct drm_encoder *encoder) { struct drm_device *dev = encoder->dev; drm_modeset_lock_all(dev); drm_mode_object_put(dev, &encoder->base); list_del(&encoder->head); dev->mode_config.num_encoder--; drm_modeset_unlock_all(dev); } EXPORT_SYMBOL(drm_encoder_cleanup); /** * drm_plane_init - Initialise a new 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 * @priv: plane is private (hidden from userspace)? * * Inits a new object created as base part of a driver plane object. * * 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, uint32_t format_count, bool priv) { int ret; drm_modeset_lock_all(dev); ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); if (ret) goto out; plane->base.properties = &plane->properties; plane->dev = dev; plane->funcs = funcs; plane->format_types = kmalloc(sizeof(uint32_t) * format_count, GFP_KERNEL); if (!plane->format_types) { DRM_DEBUG_KMS("out of memory when allocating plane\n"); drm_mode_object_put(dev, &plane->base); ret = -ENOMEM; goto out; } memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); plane->format_count = format_count; plane->possible_crtcs = possible_crtcs; /* private planes are not exposed to userspace, but depending on * display hardware, might be convenient to allow sharing programming * for the scanout engine with the crtc implementation. */ if (!priv) { list_add_tail(&plane->head, &dev->mode_config.plane_list); dev->mode_config.num_plane++; } else { INIT_LIST_HEAD(&plane->head); } out: drm_modeset_unlock_all(dev); return ret; } 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_put(dev, &plane->base); /* if not added to a list, it must be a private plane */ if (!list_empty(&plane->head)) { list_del(&plane->head); dev->mode_config.num_plane--; } drm_modeset_unlock_all(dev); } EXPORT_SYMBOL(drm_plane_cleanup); /** * 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; ret = plane->funcs->disable_plane(plane); if (ret) DRM_ERROR("failed to disable plane with busy fb\n"); /* disconnect the plane from the fb and crtc: */ __drm_framebuffer_unreference(plane->fb); plane->fb = NULL; plane->crtc = NULL; } EXPORT_SYMBOL(drm_plane_force_disable); /** * drm_mode_create - create a new display mode * @dev: DRM device * * Create a new drm_display_mode, give it an ID, and return it. * * RETURNS: * Pointer to new mode on success, NULL on error. */ struct drm_display_mode *drm_mode_create(struct drm_device *dev) { struct drm_display_mode *nmode; nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); if (!nmode) return NULL; if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { kfree(nmode); return NULL; } return nmode; } EXPORT_SYMBOL(drm_mode_create); /** * drm_mode_destroy - remove a mode * @dev: DRM device * @mode: mode to remove * * Free @mode's unique identifier, then free it. */ void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) { if (!mode) return; drm_mode_object_put(dev, &mode->base); kfree(mode); } EXPORT_SYMBOL(drm_mode_destroy); static int drm_mode_create_standard_connector_properties(struct drm_device *dev) { struct drm_property *edid; struct drm_property *dpms; /* * Standard properties (apply to all connectors) */ edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE, "EDID", 0); dev->mode_config.edid_property = edid; dpms = drm_property_create_enum(dev, 0, "DPMS", drm_dpms_enum_list, ARRAY_SIZE(drm_dpms_enum_list)); dev->mode_config.dpms_property = dpms; return 0; } /** * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties * @dev: DRM device * * Called by a driver the first time a DVI-I connector is made. */ int drm_mode_create_dvi_i_properties(struct drm_device *dev) { struct drm_property *dvi_i_selector; struct drm_property *dvi_i_subconnector; if (dev->mode_config.dvi_i_select_subconnector_property) return 0; dvi_i_selector = drm_property_create_enum(dev, 0, "select subconnector", drm_dvi_i_select_enum_list, ARRAY_SIZE(drm_dvi_i_select_enum_list)); dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, "subconnector", drm_dvi_i_subconnector_enum_list, ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; return 0; } EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); /** * drm_create_tv_properties - create TV specific connector properties * @dev: DRM device * @num_modes: number of different TV formats (modes) supported * @modes: array of pointers to strings containing name of each format * * Called by a driver's TV initialization routine, this function creates * the TV specific connector properties for a given device. Caller is * responsible for allocating a list of format names and passing them to * this routine. */ int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, char *modes[]) { struct drm_property *tv_selector; struct drm_property *tv_subconnector; int i; if (dev->mode_config.tv_select_subconnector_property) return 0; /* * Basic connector properties */ tv_selector = drm_property_create_enum(dev, 0, "select subconnector", drm_tv_select_enum_list, ARRAY_SIZE(drm_tv_select_enum_list)); dev->mode_config.tv_select_subconnector_property = tv_selector; tv_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, "subconnector", drm_tv_subconnector_enum_list, ARRAY_SIZE(drm_tv_subconnector_enum_list)); dev->mode_config.tv_subconnector_property = tv_subconnector; /* * Other, TV specific properties: margins & TV modes. */ dev->mode_config.tv_left_margin_property = drm_property_create_range(dev, 0, "left margin", 0, 100); dev->mode_config.tv_right_margin_property = drm_property_create_range(dev, 0, "right margin", 0, 100); dev->mode_config.tv_top_margin_property = drm_property_create_range(dev, 0, "top margin", 0, 100); dev->mode_config.tv_bottom_margin_property = drm_property_create_range(dev, 0, "bottom margin", 0, 100); dev->mode_config.tv_mode_property = drm_property_create(dev, DRM_MODE_PROP_ENUM, "mode", num_modes); for (i = 0; i < num_modes; i++) drm_property_add_enum(dev->mode_config.tv_mode_property, i, i, modes[i]); dev->mode_config.tv_brightness_property = drm_property_create_range(dev, 0, "brightness", 0, 100); dev->mode_config.tv_contrast_property = drm_property_create_range(dev, 0, "contrast", 0, 100); dev->mode_config.tv_flicker_reduction_property = drm_property_create_range(dev, 0, "flicker reduction", 0, 100); dev->mode_config.tv_overscan_property = drm_property_create_range(dev, 0, "overscan", 0, 100); dev->mode_config.tv_saturation_property = drm_property_create_range(dev, 0, "saturation", 0, 100); dev->mode_config.tv_hue_property = drm_property_create_range(dev, 0, "hue", 0, 100); return 0; } EXPORT_SYMBOL(drm_mode_create_tv_properties); /** * drm_mode_create_scaling_mode_property - create scaling mode property * @dev: DRM device * * Called by a driver the first time it's needed, must be attached to desired * connectors. */ int drm_mode_create_scaling_mode_property(struct drm_device *dev) { struct drm_property *scaling_mode; if (dev->mode_config.scaling_mode_property) return 0; scaling_mode = drm_property_create_enum(dev, 0, "scaling mode", drm_scaling_mode_enum_list, ARRAY_SIZE(drm_scaling_mode_enum_list)); dev->mode_config.scaling_mode_property = scaling_mode; return 0; } EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); /** * drm_mode_create_dithering_property - create dithering property * @dev: DRM device * * Called by a driver the first time it's needed, must be attached to desired * connectors. */ int drm_mode_create_dithering_property(struct drm_device *dev) { struct drm_property *dithering_mode; if (dev->mode_config.dithering_mode_property) return 0; dithering_mode = drm_property_create_enum(dev, 0, "dithering", drm_dithering_mode_enum_list, ARRAY_SIZE(drm_dithering_mode_enum_list)); dev->mode_config.dithering_mode_property = dithering_mode; return 0; } EXPORT_SYMBOL(drm_mode_create_dithering_property); /** * drm_mode_create_dirty_property - create dirty property * @dev: DRM device * * Called by a driver the first time it's needed, must be attached to desired * connectors. */ int drm_mode_create_dirty_info_property(struct drm_device *dev) { struct drm_property *dirty_info; if (dev->mode_config.dirty_info_property) return 0; dirty_info = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, "dirty", drm_dirty_info_enum_list, ARRAY_SIZE(drm_dirty_info_enum_list)); dev->mode_config.dirty_info_property = dirty_info; return 0; } EXPORT_SYMBOL(drm_mode_create_dirty_info_property); static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) { uint32_t total_objects = 0; total_objects += dev->mode_config.num_crtc; total_objects += dev->mode_config.num_connector; total_objects += dev->mode_config.num_encoder; group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); if (!group->id_list) return -ENOMEM; group->num_crtcs = 0; group->num_connectors = 0; group->num_encoders = 0; return 0; } int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group) { struct drm_crtc *crtc; struct drm_encoder *encoder; struct drm_connector *connector; int ret; if ((ret = drm_mode_group_init(dev, group))) return ret; list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) group->id_list[group->num_crtcs++] = crtc->base.id; list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) group->id_list[group->num_crtcs + group->num_encoders++] = encoder->base.id; list_for_each_entry(connector, &dev->mode_config.connector_list, head) group->id_list[group->num_crtcs + group->num_encoders + group->num_connectors++] = connector->base.id; return 0; } EXPORT_SYMBOL(drm_mode_group_init_legacy_group); /** * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo * @out: drm_mode_modeinfo struct to return to the user * @in: drm_display_mode to use * * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to * the user. */ static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, const struct drm_display_mode *in) { WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, "timing values too large for mode info\n"); out->clock = in->clock; out->hdisplay = in->hdisplay; out->hsync_start = in->hsync_start; out->hsync_end = in->hsync_end; out->htotal = in->htotal; out->hskew = in->hskew; out->vdisplay = in->vdisplay; out->vsync_start = in->vsync_start; out->vsync_end = in->vsync_end; out->vtotal = in->vtotal; out->vscan = in->vscan; out->vrefresh = in->vrefresh; out->flags = in->flags; out->type = in->type; strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); out->name[DRM_DISPLAY_MODE_LEN-1] = 0; } /** * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode * @out: drm_display_mode to return to the user * @in: drm_mode_modeinfo to use * * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to * the caller. * * RETURNS: * Zero on success, errno on failure. */ static int drm_crtc_convert_umode(struct drm_display_mode *out, const struct drm_mode_modeinfo *in) { if (in->clock > INT_MAX || in->vrefresh > INT_MAX) return -ERANGE; out->clock = in->clock; out->hdisplay = in->hdisplay; out->hsync_start = in->hsync_start; out->hsync_end = in->hsync_end; out->htotal = in->htotal; out->hskew = in->hskew; out->vdisplay = in->vdisplay; out->vsync_start = in->vsync_start; out->vsync_end = in->vsync_end; out->vtotal = in->vtotal; out->vscan = in->vscan; out->vrefresh = in->vrefresh; out->flags = in->flags; out->type = in->type; strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 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, 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, i; uint32_t __user *fb_id; uint32_t __user *crtc_id; uint32_t __user *connector_id; uint32_t __user *encoder_id; struct drm_mode_group *mode_group; 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); drm_modeset_lock_all(dev); mode_group = &file_priv->master->minor->mode_group; if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { list_for_each(lh, &dev->mode_config.crtc_list) crtc_count++; list_for_each(lh, &dev->mode_config.connector_list) connector_count++; list_for_each(lh, &dev->mode_config.encoder_list) encoder_count++; } else { crtc_count = mode_group->num_crtcs; connector_count = mode_group->num_connectors; encoder_count = mode_group->num_encoders; } 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; if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); if (put_user(crtc->base.id, crtc_id + copied)) { ret = -EFAULT; goto out; } copied++; } } else { for (i = 0; i < mode_group->num_crtcs; i++) { if (put_user(mode_group->id_list[i], 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; if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, drm_get_encoder_name(encoder)); if (put_user(encoder->base.id, encoder_id + copied)) { ret = -EFAULT; goto out; } copied++; } } else { for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { if (put_user(mode_group->id_list[i], 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; if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { list_for_each_entry(connector, &dev->mode_config.connector_list, head) { DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, drm_get_connector_name(connector)); if (put_user(connector->base.id, connector_id + copied)) { ret = -EFAULT; goto out; } copied++; } } else { int start = mode_group->num_crtcs + mode_group->num_encoders; for (i = start; i < start + mode_group->num_connectors; i++) { if (put_user(mode_group->id_list[i], connector_id + copied)) { ret = -EFAULT; goto out; } copied++; } } } card_res->count_connectors = connector_count; DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, card_res->count_connectors, card_res->count_encoders); out: drm_modeset_unlock_all(dev); 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, 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; struct drm_mode_object *obj; int ret = 0; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, crtc_resp->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { ret = -EINVAL; goto out; } crtc = obj_to_crtc(obj); crtc_resp->x = crtc->x; crtc_resp->y = crtc->y; crtc_resp->gamma_size = crtc->gamma_size; if (crtc->fb) crtc_resp->fb_id = crtc->fb->base.id; else crtc_resp->fb_id = 0; if (crtc->enabled) { drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); crtc_resp->mode_valid = 1; } else { crtc_resp->mode_valid = 0; } out: drm_modeset_unlock_all(dev); return ret; } /** * drm_mode_getconnector - get connector configuration * @dev: drm device for the ioctl * @data: data pointer for the ioctl * @file_priv: drm file for the ioctl call * * Construct a connector configuration structure to return to the user. * * Called by the user via ioctl. * * RETURNS: * Zero on success, errno on failure. */ int drm_mode_getconnector(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_get_connector *out_resp = data; struct drm_mode_object *obj; struct drm_connector *connector; struct drm_display_mode *mode; int mode_count = 0; int props_count = 0; int encoders_count = 0; int ret = 0; int copied = 0; int i; struct drm_mode_modeinfo u_mode; struct drm_mode_modeinfo __user *mode_ptr; uint32_t __user *prop_ptr; uint64_t __user *prop_values; uint32_t __user *encoder_ptr; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); mutex_lock(&dev->mode_config.mutex); obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR); if (!obj) { ret = -EINVAL; goto out; } connector = obj_to_connector(obj); props_count = connector->properties.count; for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { if (connector->encoder_ids[i] != 0) { encoders_count++; } } if (out_resp->count_modes == 0) { connector->funcs->fill_modes(connector, dev->mode_config.max_width, dev->mode_config.max_height); } /* delayed so we get modes regardless of pre-fill_modes state */ list_for_each_entry(mode, &connector->modes, head) mode_count++; out_resp->connector_id = connector->base.id; out_resp->connector_type = connector->connector_type; out_resp->connector_type_id = connector->connector_type_id; out_resp->mm_width = connector->display_info.width_mm; out_resp->mm_height = connector->display_info.height_mm; out_resp->subpixel = connector->display_info.subpixel_order; out_resp->connection = connector->status; if (connector->encoder) out_resp->encoder_id = connector->encoder->base.id; else out_resp->encoder_id = 0; /* * This ioctl is called twice, once to determine how much space is * needed, and the 2nd time to fill it. */ if ((out_resp->count_modes >= mode_count) && mode_count) { copied = 0; mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; list_for_each_entry(mode, &connector->modes, head) { drm_crtc_convert_to_umode(&u_mode, mode); if (copy_to_user(mode_ptr + copied, &u_mode, sizeof(u_mode))) { ret = -EFAULT; goto out; } copied++; } } out_resp->count_modes = mode_count; if ((out_resp->count_props >= props_count) && props_count) { copied = 0; prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); for (i = 0; i < connector->properties.count; i++) { if (put_user(connector->properties.ids[i], prop_ptr + copied)) { ret = -EFAULT; goto out; } if (put_user(connector->properties.values[i], prop_values + copied)) { ret = -EFAULT; goto out; } copied++; } } out_resp->count_props = props_count; if ((out_resp->count_encoders >= encoders_count) && encoders_count) { copied = 0; encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { if (connector->encoder_ids[i] != 0) { if (put_user(connector->encoder_ids[i], encoder_ptr + copied)) { ret = -EFAULT; goto out; } copied++; } } } out_resp->count_encoders = encoders_count; out: mutex_unlock(&dev->mode_config.mutex); return ret; } int drm_mode_getencoder(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_get_encoder *enc_resp = data; struct drm_mode_object *obj; struct drm_encoder *encoder; int ret = 0; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, enc_resp->encoder_id, DRM_MODE_OBJECT_ENCODER); if (!obj) { ret = -EINVAL; goto out; } encoder = obj_to_encoder(obj); if (encoder->crtc) enc_resp->crtc_id = encoder->crtc->base.id; else enc_resp->crtc_id = 0; enc_resp->encoder_type = encoder->encoder_type; enc_resp->encoder_id = encoder->base.id; enc_resp->possible_crtcs = encoder->possible_crtcs; enc_resp->possible_clones = encoder->possible_clones; out: drm_modeset_unlock_all(dev); return ret; } /** * drm_mode_getplane_res - get plane info * @dev: DRM device * @data: ioctl data * @file_priv: DRM file info * * Return an plane count and set of IDs. */ 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, ret = 0; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); config = &dev->mode_config; /* * This ioctl is called twice, once to determine how much space is * needed, and the 2nd time to fill it. */ if (config->num_plane && (plane_resp->count_planes >= config->num_plane)) { plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; list_for_each_entry(plane, &config->plane_list, head) { if (put_user(plane->base.id, plane_ptr + copied)) { ret = -EFAULT; goto out; } copied++; } } plane_resp->count_planes = config->num_plane; out: drm_modeset_unlock_all(dev); return ret; } /** * drm_mode_getplane - get plane info * @dev: DRM device * @data: ioctl data * @file_priv: DRM file info * * Return plane info, including formats supported, gamma size, any * current fb, etc. */ 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_mode_object *obj; struct drm_plane *plane; uint32_t __user *format_ptr; int ret = 0; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, plane_resp->plane_id, DRM_MODE_OBJECT_PLANE); if (!obj) { ret = -ENOENT; goto out; } plane = obj_to_plane(obj); 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; 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)) { ret = -EFAULT; goto out; } } plane_resp->count_format_types = plane->format_count; out: drm_modeset_unlock_all(dev); return ret; } /** * drm_mode_setplane - set up or tear down an plane * @dev: DRM device * @data: ioctl data* * @file_priv: DRM file info * * Set plane info, including placement, fb, scaling, and other factors. * Or pass a NULL fb to disable. */ 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_mode_object *obj; struct drm_plane *plane; struct drm_crtc *crtc; struct drm_framebuffer *fb = NULL, *old_fb = NULL; int ret = 0; unsigned int fb_width, fb_height; int i; 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. */ obj = drm_mode_object_find(dev, plane_req->plane_id, DRM_MODE_OBJECT_PLANE); if (!obj) { DRM_DEBUG_KMS("Unknown plane ID %d\n", plane_req->plane_id); return -ENOENT; } plane = obj_to_plane(obj); /* No fb means shut it down */ if (!plane_req->fb_id) { drm_modeset_lock_all(dev); old_fb = plane->fb; plane->funcs->disable_plane(plane); plane->crtc = NULL; plane->fb = NULL; drm_modeset_unlock_all(dev); goto out; } obj = drm_mode_object_find(dev, plane_req->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { DRM_DEBUG_KMS("Unknown crtc ID %d\n", plane_req->crtc_id); ret = -ENOENT; goto out; } crtc = obj_to_crtc(obj); fb = drm_framebuffer_lookup(dev, plane_req->fb_id); if (!fb) { DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", plane_req->fb_id); ret = -ENOENT; goto out; } /* Check whether this plane supports the fb pixel format. */ for (i = 0; i < plane->format_count; i++) if (fb->pixel_format == plane->format_types[i]) break; if (i == plane->format_count) { DRM_DEBUG_KMS("Invalid pixel format %s\n", drm_get_format_name(fb->pixel_format)); ret = -EINVAL; goto out; } fb_width = fb->width << 16; fb_height = fb->height << 16; /* Make sure source coordinates are inside the fb. */ if (plane_req->src_w > fb_width || plane_req->src_x > fb_width - plane_req->src_w || plane_req->src_h > fb_height || plane_req->src_y > fb_height - plane_req->src_h) { DRM_DEBUG_KMS("Invalid source coordinates " "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", plane_req->src_w >> 16, ((plane_req->src_w & 0xffff) * 15625) >> 10, plane_req->src_h >> 16, ((plane_req->src_h & 0xffff) * 15625) >> 10, plane_req->src_x >> 16, ((plane_req->src_x & 0xffff) * 15625) >> 10, plane_req->src_y >> 16, ((plane_req->src_y & 0xffff) * 15625) >> 10); ret = -ENOSPC; goto out; } /* Give drivers some help against integer overflows */ if (plane_req->crtc_w > INT_MAX || plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || plane_req->crtc_h > INT_MAX || plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", plane_req->crtc_w, plane_req->crtc_h, plane_req->crtc_x, plane_req->crtc_y); ret = -ERANGE; goto out; } drm_modeset_lock_all(dev); ret = plane->funcs->update_plane(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 (!ret) { old_fb = plane->fb; plane->crtc = crtc; plane->fb = fb; fb = NULL; } drm_modeset_unlock_all(dev); out: if (fb) drm_framebuffer_unreference(fb); if (old_fb) drm_framebuffer_unreference(old_fb); return ret; } /** * 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. */ int drm_mode_set_config_internal(struct drm_mode_set *set) { struct drm_crtc *crtc = set->crtc; struct drm_framebuffer *fb, *old_fb; int ret; old_fb = crtc->fb; fb = set->fb; ret = crtc->funcs->set_config(set); if (ret == 0) { if (old_fb) drm_framebuffer_unreference(old_fb); if (fb) drm_framebuffer_reference(fb); } return ret; } EXPORT_SYMBOL(drm_mode_set_config_internal); /** * 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, 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_mode_object *obj; 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; /* For some reason crtc x/y offsets are signed internally. */ if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) return -ERANGE; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, crtc_req->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); ret = -EINVAL; goto out; } crtc = obj_to_crtc(obj); DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); if (crtc_req->mode_valid) { int hdisplay, vdisplay; /* 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->fb) { DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); ret = -EINVAL; goto out; } fb = crtc->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 = -EINVAL; goto out; } } mode = drm_mode_create(dev); if (!mode) { ret = -ENOMEM; goto out; } ret = drm_crtc_convert_umode(mode, &crtc_req->mode); if (ret) { DRM_DEBUG_KMS("Invalid mode\n"); goto out; } drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); hdisplay = mode->hdisplay; vdisplay = mode->vdisplay; if (crtc->invert_dimensions) swap(hdisplay, vdisplay); if (hdisplay > fb->width || vdisplay > fb->height || crtc_req->x > fb->width - hdisplay || crtc_req->y > fb->height - vdisplay) { DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", fb->width, fb->height, hdisplay, vdisplay, crtc_req->x, crtc_req->y, crtc->invert_dimensions ? " (inverted)" : ""); ret = -ENOSPC; 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(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++) { 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; } obj = drm_mode_object_find(dev, out_id, DRM_MODE_OBJECT_CONNECTOR); if (!obj) { DRM_DEBUG_KMS("Connector id %d unknown\n", out_id); ret = -EINVAL; goto out; } connector = obj_to_connector(obj); DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, drm_get_connector_name(connector)); 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); kfree(connector_set); drm_mode_destroy(dev, mode); drm_modeset_unlock_all(dev); 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_object *obj; 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; obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); return -EINVAL; } crtc = obj_to_crtc(obj); mutex_lock(&crtc->mutex); if (req->flags & DRM_MODE_CURSOR_BO) { if (!crtc->funcs->cursor_set) { ret = -ENXIO; goto out; } /* Turns off the cursor if handle is 0 */ 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: mutex_unlock(&crtc->mutex); return ret; } /* Original addfb only supported RGB formats, so figure out which one */ uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) { uint32_t fmt; switch (bpp) { case 8: fmt = DRM_FORMAT_C8; break; case 16: if (depth == 15) fmt = DRM_FORMAT_XRGB1555; else fmt = DRM_FORMAT_RGB565; break; case 24: fmt = DRM_FORMAT_RGB888; break; case 32: if (depth == 24) fmt = DRM_FORMAT_XRGB8888; else if (depth == 30) fmt = DRM_FORMAT_XRGB2101010; else fmt = DRM_FORMAT_ARGB8888; break; default: DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); fmt = DRM_FORMAT_XRGB8888; break; } return fmt; } EXPORT_SYMBOL(drm_mode_legacy_fb_format); /** * drm_mode_addfb - add an FB to the graphics configuration * @dev: drm device for the ioctl * @data: data pointer for the ioctl * @file_priv: drm file for the ioctl call * * Add a new FB to the specified CRTC, given a user request. * * Called by the user via ioctl. * * RETURNS: * Zero on success, errno on failure. */ int drm_mode_addfb(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_fb_cmd *or = data; struct drm_mode_fb_cmd2 r = {}; struct drm_mode_config *config = &dev->mode_config; struct drm_framebuffer *fb; int ret = 0; /* Use new struct with format internally */ r.fb_id = or->fb_id; r.width = or->width; r.height = or->height; r.pitches[0] = or->pitch; r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); r.handles[0] = or->handle; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; if ((config->min_width > r.width) || (r.width > config->max_width)) return -EINVAL; if ((config->min_height > r.height) || (r.height > config->max_height)) return -EINVAL; fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); if (IS_ERR(fb)) { DRM_DEBUG_KMS("could not create framebuffer\n"); return PTR_ERR(fb); } mutex_lock(&file_priv->fbs_lock); or->fb_id = fb->base.id; list_add(&fb->filp_head, &file_priv->fbs); DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); mutex_unlock(&file_priv->fbs_lock); return ret; } static int format_check(const struct drm_mode_fb_cmd2 *r) { uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; switch (format) { case DRM_FORMAT_C8: case DRM_FORMAT_RGB332: case DRM_FORMAT_BGR233: case DRM_FORMAT_XRGB4444: case DRM_FORMAT_XBGR4444: case DRM_FORMAT_RGBX4444: case DRM_FORMAT_BGRX4444: case DRM_FORMAT_ARGB4444: case DRM_FORMAT_ABGR4444: case DRM_FORMAT_RGBA4444: case DRM_FORMAT_BGRA4444: case DRM_FORMAT_XRGB1555: case DRM_FORMAT_XBGR1555: case DRM_FORMAT_RGBX5551: case DRM_FORMAT_BGRX5551: case DRM_FORMAT_ARGB1555: case DRM_FORMAT_ABGR1555: case DRM_FORMAT_RGBA5551: case DRM_FORMAT_BGRA5551: case DRM_FORMAT_RGB565: case DRM_FORMAT_BGR565: case DRM_FORMAT_RGB888: case DRM_FORMAT_BGR888: case DRM_FORMAT_XRGB8888: case DRM_FORMAT_XBGR8888: case DRM_FORMAT_RGBX8888: case DRM_FORMAT_BGRX8888: case DRM_FORMAT_ARGB8888: case DRM_FORMAT_ABGR8888: case DRM_FORMAT_RGBA8888: case DRM_FORMAT_BGRA8888: case DRM_FORMAT_XRGB2101010: case DRM_FORMAT_XBGR2101010: case DRM_FORMAT_RGBX1010102: case DRM_FORMAT_BGRX1010102: case DRM_FORMAT_ARGB2101010: case DRM_FORMAT_ABGR2101010: case DRM_FORMAT_RGBA1010102: case DRM_FORMAT_BGRA1010102: case DRM_FORMAT_YUYV: case DRM_FORMAT_YVYU: case DRM_FORMAT_UYVY: case DRM_FORMAT_VYUY: case DRM_FORMAT_AYUV: case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: case DRM_FORMAT_NV24: case DRM_FORMAT_NV42: case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: case DRM_FORMAT_YUV411: case DRM_FORMAT_YVU411: case DRM_FORMAT_YUV420: case DRM_FORMAT_YVU420: case DRM_FORMAT_YUV422: case DRM_FORMAT_YVU422: case DRM_FORMAT_YUV444: case DRM_FORMAT_YVU444: return 0; default: return -EINVAL; } } static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) { int ret, hsub, vsub, num_planes, i; ret = format_check(r); if (ret) { DRM_DEBUG_KMS("bad framebuffer format %s\n", drm_get_format_name(r->pixel_format)); return ret; } hsub = drm_format_horz_chroma_subsampling(r->pixel_format); vsub = drm_format_vert_chroma_subsampling(r->pixel_format); num_planes = drm_format_num_planes(r->pixel_format); if (r->width == 0 || r->width % hsub) { DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); return -EINVAL; } if (r->height == 0 || r->height % vsub) { DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); return -EINVAL; } for (i = 0; i < num_planes; i++) { unsigned int width = r->width / (i != 0 ? hsub : 1); unsigned int height = r->height / (i != 0 ? vsub : 1); unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); if (!r->handles[i]) { DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); return -EINVAL; } if ((uint64_t) width * cpp > UINT_MAX) return -ERANGE; if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) return -ERANGE; if (r->pitches[i] < width * cpp) { DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); return -EINVAL; } } return 0; } /** * drm_mode_addfb2 - add an FB to the graphics configuration * @dev: drm device for the ioctl * @data: data pointer for the ioctl * @file_priv: drm file for the ioctl call * * Add a new FB to the specified CRTC, given a user request with format. * * Called by the user via ioctl. * * RETURNS: * Zero on success, errno on failure. */ int drm_mode_addfb2(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_fb_cmd2 *r = data; struct drm_mode_config *config = &dev->mode_config; struct drm_framebuffer *fb; int ret; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; if (r->flags & ~DRM_MODE_FB_INTERLACED) { DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); return -EINVAL; } if ((config->min_width > r->width) || (r->width > config->max_width)) { DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", r->width, config->min_width, config->max_width); return -EINVAL; } if ((config->min_height > r->height) || (r->height > config->max_height)) { DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", r->height, config->min_height, config->max_height); return -EINVAL; } ret = framebuffer_check(r); if (ret) return ret; fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); if (IS_ERR(fb)) { DRM_DEBUG_KMS("could not create framebuffer\n"); return PTR_ERR(fb); } mutex_lock(&file_priv->fbs_lock); r->fb_id = fb->base.id; list_add(&fb->filp_head, &file_priv->fbs); DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); mutex_unlock(&file_priv->fbs_lock); return ret; } /** * drm_mode_rmfb - remove an FB from the configuration * @dev: drm device for the ioctl * @data: data pointer for the ioctl * @file_priv: drm file for the ioctl call * * Remove the FB specified by the user. * * Called by the user via ioctl. * * RETURNS: * Zero on success, errno on failure. */ int drm_mode_rmfb(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_framebuffer *fb = NULL; struct drm_framebuffer *fbl = NULL; uint32_t *id = data; int found = 0; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; mutex_lock(&file_priv->fbs_lock); mutex_lock(&dev->mode_config.fb_lock); fb = __drm_framebuffer_lookup(dev, *id); if (!fb) goto fail_lookup; list_for_each_entry(fbl, &file_priv->fbs, filp_head) if (fb == fbl) found = 1; if (!found) goto fail_lookup; /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ __drm_framebuffer_unregister(dev, fb); list_del_init(&fb->filp_head); mutex_unlock(&dev->mode_config.fb_lock); mutex_unlock(&file_priv->fbs_lock); drm_framebuffer_remove(fb); return 0; fail_lookup: mutex_unlock(&dev->mode_config.fb_lock); mutex_unlock(&file_priv->fbs_lock); return -EINVAL; } /** * drm_mode_getfb - get FB info * @dev: drm device for the ioctl * @data: data pointer for the ioctl * @file_priv: drm file for the ioctl call * * Lookup the FB given its ID and return info about it. * * Called by the user via ioctl. * * RETURNS: * Zero on success, errno on failure. */ int drm_mode_getfb(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_fb_cmd *r = data; struct drm_framebuffer *fb; int ret; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; fb = drm_framebuffer_lookup(dev, r->fb_id); if (!fb) return -EINVAL; r->height = fb->height; r->width = fb->width; r->depth = fb->depth; r->bpp = fb->bits_per_pixel; r->pitch = fb->pitches[0]; if (fb->funcs->create_handle) ret = fb->funcs->create_handle(fb, file_priv, &r->handle); else ret = -ENODEV; drm_framebuffer_unreference(fb); return ret; } int drm_mode_dirtyfb_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_clip_rect __user *clips_ptr; struct drm_clip_rect *clips = NULL; struct drm_mode_fb_dirty_cmd *r = data; struct drm_framebuffer *fb; unsigned flags; int num_clips; int ret; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; fb = drm_framebuffer_lookup(dev, r->fb_id); if (!fb) return -EINVAL; num_clips = r->num_clips; clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; if (!num_clips != !clips_ptr) { ret = -EINVAL; goto out_err1; } flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; /* If userspace annotates copy, clips must come in pairs */ if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { ret = -EINVAL; goto out_err1; } if (num_clips && clips_ptr) { if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { ret = -EINVAL; goto out_err1; } clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); if (!clips) { ret = -ENOMEM; goto out_err1; } ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); if (ret) { ret = -EFAULT; goto out_err2; } } if (fb->funcs->dirty) { drm_modeset_lock_all(dev); ret = fb->funcs->dirty(fb, file_priv, flags, r->color, clips, num_clips); drm_modeset_unlock_all(dev); } else { ret = -ENOSYS; } out_err2: kfree(clips); out_err1: drm_framebuffer_unreference(fb); return ret; } /** * drm_fb_release - remove and free the FBs on this file * @priv: drm file for the ioctl * * Destroy all the FBs associated with @filp. * * Called by the user via ioctl. * * RETURNS: * Zero on success, errno on failure. */ void drm_fb_release(struct drm_file *priv) { struct drm_device *dev = priv->minor->dev; struct drm_framebuffer *fb, *tfb; mutex_lock(&priv->fbs_lock); list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { mutex_lock(&dev->mode_config.fb_lock); /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ __drm_framebuffer_unregister(dev, fb); mutex_unlock(&dev->mode_config.fb_lock); list_del_init(&fb->filp_head); /* This will also drop the fpriv->fbs reference. */ drm_framebuffer_remove(fb); } mutex_unlock(&priv->fbs_lock); } struct drm_property *drm_property_create(struct drm_device *dev, int flags, const char *name, int num_values) { struct drm_property *property = NULL; int ret; property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); if (!property) return NULL; if (num_values) { property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); if (!property->values) goto fail; } ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); if (ret) goto fail; property->flags = flags; property->num_values = num_values; INIT_LIST_HEAD(&property->enum_blob_list); if (name) { strncpy(property->name, name, DRM_PROP_NAME_LEN); property->name[DRM_PROP_NAME_LEN-1] = '\0'; } list_add_tail(&property->head, &dev->mode_config.property_list); return property; fail: kfree(property->values); kfree(property); return NULL; } EXPORT_SYMBOL(drm_property_create); struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, const char *name, const struct drm_prop_enum_list *props, int num_values) { struct drm_property *property; int i, ret; flags |= DRM_MODE_PROP_ENUM; property = drm_property_create(dev, flags, name, num_values); if (!property) return NULL; for (i = 0; i < num_values; i++) { ret = drm_property_add_enum(property, i, props[i].type, props[i].name); if (ret) { drm_property_destroy(dev, property); return NULL; } } return property; } EXPORT_SYMBOL(drm_property_create_enum); struct drm_property *drm_property_create_bitmask(struct drm_device *dev, int flags, const char *name, const struct drm_prop_enum_list *props, int num_values) { struct drm_property *property; int i, ret; flags |= DRM_MODE_PROP_BITMASK; property = drm_property_create(dev, flags, name, num_values); if (!property) return NULL; for (i = 0; i < num_values; i++) { ret = drm_property_add_enum(property, i, props[i].type, props[i].name); if (ret) { drm_property_destroy(dev, property); return NULL; } } return property; } EXPORT_SYMBOL(drm_property_create_bitmask); struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, const char *name, uint64_t min, uint64_t max) { struct drm_property *property; flags |= DRM_MODE_PROP_RANGE; property = drm_property_create(dev, flags, name, 2); if (!property) return NULL; property->values[0] = min; property->values[1] = max; return property; } EXPORT_SYMBOL(drm_property_create_range); int drm_property_add_enum(struct drm_property *property, int index, uint64_t value, const char *name) { struct drm_property_enum *prop_enum; if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) return -EINVAL; /* * Bitmask enum properties have the additional constraint of values * from 0 to 63 */ if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) return -EINVAL; if (!list_empty(&property->enum_blob_list)) { list_for_each_entry(prop_enum, &property->enum_blob_list, head) { if (prop_enum->value == value) { strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; return 0; } } } prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); if (!prop_enum) return -ENOMEM; strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; prop_enum->value = value; property->values[index] = value; list_add_tail(&prop_enum->head, &property->enum_blob_list); return 0; } EXPORT_SYMBOL(drm_property_add_enum); void drm_property_destroy(struct drm_device *dev, struct drm_property *property) { struct drm_property_enum *prop_enum, *pt; list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { list_del(&prop_enum->head); kfree(prop_enum); } if (property->num_values) kfree(property->values); drm_mode_object_put(dev, &property->base); list_del(&property->head); kfree(property); } EXPORT_SYMBOL(drm_property_destroy); void drm_object_attach_property(struct drm_mode_object *obj, struct drm_property *property, uint64_t init_val) { int count = obj->properties->count; if (count == DRM_OBJECT_MAX_PROPERTY) { WARN(1, "Failed to attach object property (type: 0x%x). Please " "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " "you see this message on the same object type.\n", obj->type); return; } obj->properties->ids[count] = property->base.id; obj->properties->values[count] = init_val; obj->properties->count++; } EXPORT_SYMBOL(drm_object_attach_property); int drm_object_property_set_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t val) { int i; for (i = 0; i < obj->properties->count; i++) { if (obj->properties->ids[i] == property->base.id) { obj->properties->values[i] = val; return 0; } } return -EINVAL; } EXPORT_SYMBOL(drm_object_property_set_value); int drm_object_property_get_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t *val) { int i; for (i = 0; i < obj->properties->count; i++) { if (obj->properties->ids[i] == property->base.id) { *val = obj->properties->values[i]; return 0; } } return -EINVAL; } EXPORT_SYMBOL(drm_object_property_get_value); int drm_mode_getproperty_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_object *obj; struct drm_mode_get_property *out_resp = data; struct drm_property *property; int enum_count = 0; int blob_count = 0; int value_count = 0; int ret = 0, i; int copied; struct drm_property_enum *prop_enum; struct drm_mode_property_enum __user *enum_ptr; struct drm_property_blob *prop_blob; uint32_t __user *blob_id_ptr; uint64_t __user *values_ptr; uint32_t __user *blob_length_ptr; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); if (!obj) { ret = -EINVAL; goto done; } property = obj_to_property(obj); if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { list_for_each_entry(prop_enum, &property->enum_blob_list, head) enum_count++; } else if (property->flags & DRM_MODE_PROP_BLOB) { list_for_each_entry(prop_blob, &property->enum_blob_list, head) blob_count++; } value_count = property->num_values; strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); out_resp->name[DRM_PROP_NAME_LEN-1] = 0; out_resp->flags = property->flags; if ((out_resp->count_values >= value_count) && value_count) { values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; for (i = 0; i < value_count; i++) { if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { ret = -EFAULT; goto done; } } } out_resp->count_values = value_count; if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { copied = 0; enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; list_for_each_entry(prop_enum, &property->enum_blob_list, head) { if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { ret = -EFAULT; goto done; } if (copy_to_user(&enum_ptr[copied].name, &prop_enum->name, DRM_PROP_NAME_LEN)) { ret = -EFAULT; goto done; } copied++; } } out_resp->count_enum_blobs = enum_count; } if (property->flags & DRM_MODE_PROP_BLOB) { if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { copied = 0; blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; list_for_each_entry(prop_blob, &property->enum_blob_list, head) { if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { ret = -EFAULT; goto done; } if (put_user(prop_blob->length, blob_length_ptr + copied)) { ret = -EFAULT; goto done; } copied++; } } out_resp->count_enum_blobs = blob_count; } done: drm_modeset_unlock_all(dev); return ret; } static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, void *data) { struct drm_property_blob *blob; int ret; if (!length || !data) return NULL; blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); if (!blob) return NULL; ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); if (ret) { kfree(blob); return NULL; } blob->length = length; memcpy(blob->data, data, length); list_add_tail(&blob->head, &dev->mode_config.property_blob_list); return blob; } static void drm_property_destroy_blob(struct drm_device *dev, struct drm_property_blob *blob) { drm_mode_object_put(dev, &blob->base); list_del(&blob->head); kfree(blob); } int drm_mode_getblob_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_object *obj; struct drm_mode_get_blob *out_resp = data; struct drm_property_blob *blob; int ret = 0; void __user *blob_ptr; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); if (!obj) { ret = -EINVAL; goto done; } blob = obj_to_blob(obj); if (out_resp->length == blob->length) { blob_ptr = (void __user *)(unsigned long)out_resp->data; if (copy_to_user(blob_ptr, blob->data, blob->length)){ ret = -EFAULT; goto done; } } out_resp->length = blob->length; done: drm_modeset_unlock_all(dev); return ret; } int drm_mode_connector_update_edid_property(struct drm_connector *connector, struct edid *edid) { struct drm_device *dev = connector->dev; int ret, size; if (connector->edid_blob_ptr) drm_property_destroy_blob(dev, connector->edid_blob_ptr); /* Delete edid, when there is none. */ if (!edid) { connector->edid_blob_ptr = NULL; ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); return ret; } size = EDID_LENGTH * (1 + edid->extensions); connector->edid_blob_ptr = drm_property_create_blob(connector->dev, size, edid); if (!connector->edid_blob_ptr) return -EINVAL; ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, connector->edid_blob_ptr->base.id); return ret; } EXPORT_SYMBOL(drm_mode_connector_update_edid_property); static bool drm_property_change_is_valid(struct drm_property *property, uint64_t value) { if (property->flags & DRM_MODE_PROP_IMMUTABLE) return false; if (property->flags & DRM_MODE_PROP_RANGE) { if (value < property->values[0] || value > property->values[1]) return false; return true; } else if (property->flags & DRM_MODE_PROP_BITMASK) { int i; uint64_t valid_mask = 0; for (i = 0; i < property->num_values; i++) valid_mask |= (1ULL << property->values[i]); return !(value & ~valid_mask); } else if (property->flags & DRM_MODE_PROP_BLOB) { /* Only the driver knows */ return true; } else { int i; for (i = 0; i < property->num_values; i++) if (property->values[i] == value) return true; return false; } } int drm_mode_connector_property_set_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_connector_set_property *conn_set_prop = data; struct drm_mode_obj_set_property obj_set_prop = { .value = conn_set_prop->value, .prop_id = conn_set_prop->prop_id, .obj_id = conn_set_prop->connector_id, .obj_type = DRM_MODE_OBJECT_CONNECTOR }; /* It does all the locking and checking we need */ return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); } static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, struct drm_property *property, uint64_t value) { int ret = -EINVAL; struct drm_connector *connector = obj_to_connector(obj); /* Do DPMS ourselves */ if (property == connector->dev->mode_config.dpms_property) { if (connector->funcs->dpms) (*connector->funcs->dpms)(connector, (int)value); ret = 0; } else if (connector->funcs->set_property) ret = connector->funcs->set_property(connector, property, value); /* store the property value if successful */ if (!ret) drm_object_property_set_value(&connector->base, property, value); return ret; } static 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; } static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, struct drm_property *property, uint64_t value) { int ret = -EINVAL; struct drm_plane *plane = obj_to_plane(obj); 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; } int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_obj_get_properties *arg = data; struct drm_mode_object *obj; int ret = 0; int i; int copied = 0; int props_count = 0; uint32_t __user *props_ptr; uint64_t __user *prop_values_ptr; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); if (!obj) { ret = -EINVAL; goto out; } if (!obj->properties) { ret = -EINVAL; goto out; } props_count = obj->properties->count; /* This ioctl is called twice, once to determine how much space is * needed, and the 2nd time to fill it. */ if ((arg->count_props >= props_count) && props_count) { copied = 0; props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); prop_values_ptr = (uint64_t __user *)(unsigned long) (arg->prop_values_ptr); for (i = 0; i < props_count; i++) { if (put_user(obj->properties->ids[i], props_ptr + copied)) { ret = -EFAULT; goto out; } if (put_user(obj->properties->values[i], prop_values_ptr + copied)) { ret = -EFAULT; goto out; } copied++; } } arg->count_props = props_count; out: drm_modeset_unlock_all(dev); return ret; } int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_obj_set_property *arg = data; struct drm_mode_object *arg_obj; struct drm_mode_object *prop_obj; struct drm_property *property; int ret = -EINVAL; int i; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; drm_modeset_lock_all(dev); arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); if (!arg_obj) goto out; if (!arg_obj->properties) goto out; for (i = 0; i < arg_obj->properties->count; i++) if (arg_obj->properties->ids[i] == arg->prop_id) break; if (i == arg_obj->properties->count) goto out; prop_obj = drm_mode_object_find(dev, arg->prop_id, DRM_MODE_OBJECT_PROPERTY); if (!prop_obj) goto out; property = obj_to_property(prop_obj); if (!drm_property_change_is_valid(property, arg->value)) goto out; switch (arg_obj->type) { case DRM_MODE_OBJECT_CONNECTOR: ret = drm_mode_connector_set_obj_prop(arg_obj, property, arg->value); break; case DRM_MODE_OBJECT_CRTC: ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); break; case DRM_MODE_OBJECT_PLANE: ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); break; } out: drm_modeset_unlock_all(dev); return ret; } int drm_mode_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder) { int i; for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { if (connector->encoder_ids[i] == 0) { connector->encoder_ids[i] = encoder->base.id; return 0; } } return -ENOMEM; } EXPORT_SYMBOL(drm_mode_connector_attach_encoder); void drm_mode_connector_detach_encoder(struct drm_connector *connector, struct drm_encoder *encoder) { int i; for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { if (connector->encoder_ids[i] == encoder->base.id) { connector->encoder_ids[i] = 0; if (connector->encoder == encoder) connector->encoder = NULL; break; } } } EXPORT_SYMBOL(drm_mode_connector_detach_encoder); int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, int gamma_size) { crtc->gamma_size = gamma_size; crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); if (!crtc->gamma_store) { crtc->gamma_size = 0; return -ENOMEM; } return 0; } EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 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_mode_object *obj; 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); obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { ret = -EINVAL; goto out; } crtc = obj_to_crtc(obj); 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; } crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); out: drm_modeset_unlock_all(dev); return ret; } 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_mode_object *obj; 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); obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { ret = -EINVAL; goto out; } crtc = obj_to_crtc(obj); /* 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; } int drm_mode_page_flip_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_crtc_page_flip *page_flip = data; struct drm_mode_object *obj; struct drm_crtc *crtc; struct drm_framebuffer *fb = NULL, *old_fb = NULL; struct drm_pending_vblank_event *e = NULL; unsigned long flags; int hdisplay, vdisplay; int ret = -EINVAL; if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || page_flip->reserved != 0) return -EINVAL; obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) return -EINVAL; crtc = obj_to_crtc(obj); mutex_lock(&crtc->mutex); if (crtc->fb == NULL) { /* The framebuffer is currently unbound, presumably * due to a hotplug event, that userspace has not * yet discovered. */ ret = -EBUSY; goto out; } if (crtc->funcs->page_flip == NULL) goto out; fb = drm_framebuffer_lookup(dev, page_flip->fb_id); if (!fb) goto out; hdisplay = crtc->mode.hdisplay; vdisplay = crtc->mode.vdisplay; if (crtc->invert_dimensions) swap(hdisplay, vdisplay); if (hdisplay > fb->width || vdisplay > fb->height || crtc->x > fb->width - hdisplay || crtc->y > fb->height - vdisplay) { DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y, crtc->invert_dimensions ? " (inverted)" : ""); ret = -ENOSPC; goto out; } if (crtc->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) { ret = -ENOMEM; spin_lock_irqsave(&dev->event_lock, flags); if (file_priv->event_space < sizeof e->event) { spin_unlock_irqrestore(&dev->event_lock, flags); goto out; } file_priv->event_space -= sizeof e->event; spin_unlock_irqrestore(&dev->event_lock, flags); e = kzalloc(sizeof *e, GFP_KERNEL); if (e == NULL) { spin_lock_irqsave(&dev->event_lock, flags); file_priv->event_space += sizeof e->event; spin_unlock_irqrestore(&dev->event_lock, flags); goto out; } e->event.base.type = DRM_EVENT_FLIP_COMPLETE; e->event.base.length = sizeof e->event; e->event.user_data = page_flip->user_data; e->base.event = &e->event.base; e->base.file_priv = file_priv; e->base.destroy = (void (*) (struct drm_pending_event *)) kfree; } old_fb = crtc->fb; ret = crtc->funcs->page_flip(crtc, fb, e); if (ret) { if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { spin_lock_irqsave(&dev->event_lock, flags); file_priv->event_space += sizeof e->event; spin_unlock_irqrestore(&dev->event_lock, flags); kfree(e); } /* Keep the old fb, don't unref it. */ old_fb = NULL; } else { /* * Warn if the driver hasn't properly updated the crtc->fb * field to reflect that the new framebuffer is now used. * Failing to do so will screw with the reference counting * on framebuffers. */ WARN_ON(crtc->fb != fb); /* Unref only the old framebuffer. */ fb = NULL; } out: if (fb) drm_framebuffer_unreference(fb); if (old_fb) drm_framebuffer_unreference(old_fb); mutex_unlock(&crtc->mutex); return ret; } void drm_mode_config_reset(struct drm_device *dev) { struct drm_crtc *crtc; struct drm_encoder *encoder; struct drm_connector *connector; list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) if (crtc->funcs->reset) crtc->funcs->reset(crtc); list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) if (encoder->funcs->reset) encoder->funcs->reset(encoder); list_for_each_entry(connector, &dev->mode_config.connector_list, head) { connector->status = connector_status_unknown; if (connector->funcs->reset) connector->funcs->reset(connector); } } EXPORT_SYMBOL(drm_mode_config_reset); int drm_mode_create_dumb_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_mode_create_dumb *args = data; if (!dev->driver->dumb_create) return -ENOSYS; return dev->driver->dumb_create(file_priv, dev, args); } 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); } 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); } /* * Just need to support RGB formats here for compat with code that doesn't * use pixel formats directly yet. */ void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, int *bpp) { switch (format) { case DRM_FORMAT_C8: case DRM_FORMAT_RGB332: case DRM_FORMAT_BGR233: *depth = 8; *bpp = 8; break; case DRM_FORMAT_XRGB1555: case DRM_FORMAT_XBGR1555: case DRM_FORMAT_RGBX5551: case DRM_FORMAT_BGRX5551: case DRM_FORMAT_ARGB1555: case DRM_FORMAT_ABGR1555: case DRM_FORMAT_RGBA5551: case DRM_FORMAT_BGRA5551: *depth = 15; *bpp = 16; break; case DRM_FORMAT_RGB565: case DRM_FORMAT_BGR565: *depth = 16; *bpp = 16; break; case DRM_FORMAT_RGB888: case DRM_FORMAT_BGR888: *depth = 24; *bpp = 24; break; case DRM_FORMAT_XRGB8888: case DRM_FORMAT_XBGR8888: case DRM_FORMAT_RGBX8888: case DRM_FORMAT_BGRX8888: *depth = 24; *bpp = 32; break; case DRM_FORMAT_XRGB2101010: case DRM_FORMAT_XBGR2101010: case DRM_FORMAT_RGBX1010102: case DRM_FORMAT_BGRX1010102: case DRM_FORMAT_ARGB2101010: case DRM_FORMAT_ABGR2101010: case DRM_FORMAT_RGBA1010102: case DRM_FORMAT_BGRA1010102: *depth = 30; *bpp = 32; break; case DRM_FORMAT_ARGB8888: case DRM_FORMAT_ABGR8888: case DRM_FORMAT_RGBA8888: case DRM_FORMAT_BGRA8888: *depth = 32; *bpp = 32; break; default: DRM_DEBUG_KMS("unsupported pixel format\n"); *depth = 0; *bpp = 0; break; } } EXPORT_SYMBOL(drm_fb_get_bpp_depth); /** * drm_format_num_planes - get the number of planes for format * @format: pixel format (DRM_FORMAT_*) * * RETURNS: * The number of planes used by the specified pixel format. */ int drm_format_num_planes(uint32_t format) { switch (format) { case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: case DRM_FORMAT_YUV411: case DRM_FORMAT_YVU411: case DRM_FORMAT_YUV420: case DRM_FORMAT_YVU420: case DRM_FORMAT_YUV422: case DRM_FORMAT_YVU422: case DRM_FORMAT_YUV444: case DRM_FORMAT_YVU444: return 3; case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: case DRM_FORMAT_NV24: case DRM_FORMAT_NV42: return 2; default: return 1; } } EXPORT_SYMBOL(drm_format_num_planes); /** * drm_format_plane_cpp - determine the bytes per pixel value * @format: pixel format (DRM_FORMAT_*) * @plane: plane index * * RETURNS: * The bytes per pixel value for the specified plane. */ int drm_format_plane_cpp(uint32_t format, int plane) { unsigned int depth; int bpp; if (plane >= drm_format_num_planes(format)) return 0; switch (format) { case DRM_FORMAT_YUYV: case DRM_FORMAT_YVYU: case DRM_FORMAT_UYVY: case DRM_FORMAT_VYUY: return 2; case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: case DRM_FORMAT_NV24: case DRM_FORMAT_NV42: return plane ? 2 : 1; case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: case DRM_FORMAT_YUV411: case DRM_FORMAT_YVU411: case DRM_FORMAT_YUV420: case DRM_FORMAT_YVU420: case DRM_FORMAT_YUV422: case DRM_FORMAT_YVU422: case DRM_FORMAT_YUV444: case DRM_FORMAT_YVU444: return 1; default: drm_fb_get_bpp_depth(format, &depth, &bpp); return bpp >> 3; } } EXPORT_SYMBOL(drm_format_plane_cpp); /** * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor * @format: pixel format (DRM_FORMAT_*) * * RETURNS: * The horizontal chroma subsampling factor for the * specified pixel format. */ int drm_format_horz_chroma_subsampling(uint32_t format) { switch (format) { case DRM_FORMAT_YUV411: case DRM_FORMAT_YVU411: case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: return 4; case DRM_FORMAT_YUYV: case DRM_FORMAT_YVYU: case DRM_FORMAT_UYVY: case DRM_FORMAT_VYUY: case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: case DRM_FORMAT_YUV422: case DRM_FORMAT_YVU422: case DRM_FORMAT_YUV420: case DRM_FORMAT_YVU420: return 2; default: return 1; } } EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); /** * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor * @format: pixel format (DRM_FORMAT_*) * * RETURNS: * The vertical chroma subsampling factor for the * specified pixel format. */ int drm_format_vert_chroma_subsampling(uint32_t format) { switch (format) { case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: return 4; case DRM_FORMAT_YUV420: case DRM_FORMAT_YVU420: case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: return 2; default: return 1; } } EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); /** * 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); mutex_init(&dev->mode_config.idr_mutex); mutex_init(&dev->mode_config.fb_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); drm_modeset_lock_all(dev); drm_mode_create_standard_connector_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; } 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(blob, bt, &dev->mode_config.property_blob_list, head) { drm_property_destroy_blob(dev, 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_remove(fb); } 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); } idr_destroy(&dev->mode_config.crtc_idr); } EXPORT_SYMBOL(drm_mode_config_cleanup);