drm: Extract drm_framebuffer.[hc]
Also start with drm_modeset.h with the core bits, since we need to untangle this mess somehow. That allows us to move the drm_modes.h include to the right spot, except for the temporary connector status enum. That will get fixed as soon as drm_connector.h exists. v2: Rebase. v3: Move drm_crtc_force_disable_all back again, that wasn't meant to be moved (Sean). v4: Rebase. Cc: Sean Paul <seanpaul@chromium.org> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
parent
5d070be683
commit
7520a277d9
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@ -64,6 +64,15 @@ fbdev framebuffer when the struct :c:type:`struct drm_framebuffer
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drivers can manually clean up a framebuffer at module unload time with
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drivers can manually clean up a framebuffer at module unload time with
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:c:func:`drm_framebuffer_unregister_private()`.
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:c:func:`drm_framebuffer_unregister_private()`.
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Frame Buffer Functions Reference
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--------------------------------
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.. kernel-doc:: drivers/gpu/drm/drm_framebuffer.c
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:export:
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.. kernel-doc:: include/drm/drm_framebuffer.h
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:internal:
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DRM Format Handling
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DRM Format Handling
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===================
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===================
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@ -12,7 +12,8 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
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drm_info.o drm_debugfs.o drm_encoder_slave.o \
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drm_info.o drm_debugfs.o drm_encoder_slave.o \
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drm_trace_points.o drm_global.o drm_prime.o \
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drm_trace_points.o drm_global.o drm_prime.o \
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drm_rect.o drm_vma_manager.o drm_flip_work.o \
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drm_rect.o drm_vma_manager.o drm_flip_work.o \
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drm_modeset_lock.o drm_atomic.o drm_bridge.o
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drm_modeset_lock.o drm_atomic.o drm_bridge.o \
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drm_framebuffer.o
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drm-$(CONFIG_COMPAT) += drm_ioc32.o
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drm-$(CONFIG_COMPAT) += drm_ioc32.o
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drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
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drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
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@ -40,15 +40,11 @@
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#include <drm/drm_modeset_lock.h>
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#include <drm/drm_modeset_lock.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_auth.h>
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#include <drm/drm_auth.h>
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#include <drm/drm_framebuffer.h>
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#include "drm_crtc_internal.h"
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#include "drm_crtc_internal.h"
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#include "drm_internal.h"
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#include "drm_internal.h"
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static struct drm_framebuffer *
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internal_framebuffer_create(struct drm_device *dev,
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const struct drm_mode_fb_cmd2 *r,
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struct drm_file *file_priv);
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/* Avoid boilerplate. I'm tired of typing. */
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/* Avoid boilerplate. I'm tired of typing. */
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#define DRM_ENUM_NAME_FN(fnname, list) \
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#define DRM_ENUM_NAME_FN(fnname, list) \
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const char *fnname(int val) \
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const char *fnname(int val) \
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@ -238,11 +234,11 @@ EXPORT_SYMBOL(drm_get_subpixel_order_name);
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* Internal function to assign a slot in the object idr and optionally
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* Internal function to assign a slot in the object idr and optionally
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* register the object into the idr.
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* register the object into the idr.
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*/
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*/
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static int drm_mode_object_get_reg(struct drm_device *dev,
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int drm_mode_object_get_reg(struct drm_device *dev,
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struct drm_mode_object *obj,
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struct drm_mode_object *obj,
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uint32_t obj_type,
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uint32_t obj_type,
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bool register_obj,
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bool register_obj,
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void (*obj_free_cb)(struct kref *kref))
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void (*obj_free_cb)(struct kref *kref))
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{
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{
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int ret;
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int ret;
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@ -285,8 +281,8 @@ int drm_mode_object_get(struct drm_device *dev,
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return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
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return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
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}
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}
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static void drm_mode_object_register(struct drm_device *dev,
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void drm_mode_object_register(struct drm_device *dev,
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struct drm_mode_object *obj)
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struct drm_mode_object *obj)
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{
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{
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mutex_lock(&dev->mode_config.idr_mutex);
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mutex_lock(&dev->mode_config.idr_mutex);
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idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
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idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
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@ -315,8 +311,8 @@ void drm_mode_object_unregister(struct drm_device *dev,
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mutex_unlock(&dev->mode_config.idr_mutex);
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mutex_unlock(&dev->mode_config.idr_mutex);
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}
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}
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static struct drm_mode_object *_object_find(struct drm_device *dev,
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struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
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uint32_t id, uint32_t type)
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uint32_t id, uint32_t type)
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{
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{
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struct drm_mode_object *obj = NULL;
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struct drm_mode_object *obj = NULL;
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@ -351,7 +347,7 @@ struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
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{
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{
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struct drm_mode_object *obj = NULL;
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struct drm_mode_object *obj = NULL;
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obj = _object_find(dev, id, type);
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obj = __drm_mode_object_find(dev, id, type);
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return obj;
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return obj;
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}
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}
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EXPORT_SYMBOL(drm_mode_object_find);
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EXPORT_SYMBOL(drm_mode_object_find);
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@ -435,199 +431,6 @@ out:
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}
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}
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EXPORT_SYMBOL(drm_crtc_force_disable_all);
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EXPORT_SYMBOL(drm_crtc_force_disable_all);
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static void drm_framebuffer_free(struct kref *kref)
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{
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struct drm_framebuffer *fb =
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container_of(kref, struct drm_framebuffer, base.refcount);
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struct drm_device *dev = fb->dev;
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/*
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* The lookup idr holds a weak reference, which has not necessarily been
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* removed at this point. Check for that.
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*/
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drm_mode_object_unregister(dev, &fb->base);
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fb->funcs->destroy(fb);
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}
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/**
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* drm_framebuffer_init - initialize a framebuffer
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* @dev: DRM device
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* @fb: framebuffer to be initialized
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* @funcs: ... with these functions
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*
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* Allocates an ID for the framebuffer's parent mode object, sets its mode
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* functions & device file and adds it to the master fd list.
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*
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* IMPORTANT:
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* This functions publishes the fb and makes it available for concurrent access
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* by other users. Which means by this point the fb _must_ be fully set up -
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* since all the fb attributes are invariant over its lifetime, no further
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* locking but only correct reference counting is required.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
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const struct drm_framebuffer_funcs *funcs)
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{
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int ret;
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INIT_LIST_HEAD(&fb->filp_head);
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fb->dev = dev;
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fb->funcs = funcs;
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ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
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false, drm_framebuffer_free);
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if (ret)
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goto out;
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mutex_lock(&dev->mode_config.fb_lock);
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dev->mode_config.num_fb++;
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list_add(&fb->head, &dev->mode_config.fb_list);
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mutex_unlock(&dev->mode_config.fb_lock);
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drm_mode_object_register(dev, &fb->base);
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out:
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return ret;
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}
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EXPORT_SYMBOL(drm_framebuffer_init);
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/**
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* drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
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* @dev: drm device
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* @id: id of the fb object
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*
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* If successful, this grabs an additional reference to the framebuffer -
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* callers need to make sure to eventually unreference the returned framebuffer
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* again, using @drm_framebuffer_unreference.
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*/
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struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
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uint32_t id)
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{
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struct drm_mode_object *obj;
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struct drm_framebuffer *fb = NULL;
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obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
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if (obj)
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fb = obj_to_fb(obj);
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return fb;
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}
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EXPORT_SYMBOL(drm_framebuffer_lookup);
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/**
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* drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
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* @fb: fb to unregister
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*
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* Drivers need to call this when cleaning up driver-private framebuffers, e.g.
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* those used for fbdev. Note that the caller must hold a reference of it's own,
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* i.e. the object may not be destroyed through this call (since it'll lead to a
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* locking inversion).
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*/
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void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
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{
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struct drm_device *dev;
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if (!fb)
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return;
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dev = fb->dev;
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/* Mark fb as reaped and drop idr ref. */
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drm_mode_object_unregister(dev, &fb->base);
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}
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EXPORT_SYMBOL(drm_framebuffer_unregister_private);
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/**
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* drm_framebuffer_cleanup - remove a framebuffer object
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* @fb: framebuffer to remove
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*
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* Cleanup framebuffer. This function is intended to be used from the drivers
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* ->destroy callback. It can also be used to clean up driver private
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* framebuffers embedded into a larger structure.
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*
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* Note that this function does not remove the fb from active usuage - if it is
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* still used anywhere, hilarity can ensue since userspace could call getfb on
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* the id and get back -EINVAL. Obviously no concern at driver unload time.
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*
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* Also, the framebuffer will not be removed from the lookup idr - for
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* user-created framebuffers this will happen in in the rmfb ioctl. For
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* driver-private objects (e.g. for fbdev) drivers need to explicitly call
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* drm_framebuffer_unregister_private.
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*/
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void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
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{
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struct drm_device *dev = fb->dev;
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mutex_lock(&dev->mode_config.fb_lock);
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list_del(&fb->head);
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dev->mode_config.num_fb--;
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mutex_unlock(&dev->mode_config.fb_lock);
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}
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EXPORT_SYMBOL(drm_framebuffer_cleanup);
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/**
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* drm_framebuffer_remove - remove and unreference a framebuffer object
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* @fb: framebuffer to remove
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*
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* Scans all the CRTCs and planes in @dev's mode_config. If they're
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* using @fb, removes it, setting it to NULL. Then drops the reference to the
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* passed-in framebuffer. Might take the modeset locks.
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*
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* Note that this function optimizes the cleanup away if the caller holds the
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* last reference to the framebuffer. It is also guaranteed to not take the
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* modeset locks in this case.
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*/
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void drm_framebuffer_remove(struct drm_framebuffer *fb)
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{
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struct drm_device *dev;
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struct drm_crtc *crtc;
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struct drm_plane *plane;
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if (!fb)
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return;
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dev = fb->dev;
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WARN_ON(!list_empty(&fb->filp_head));
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/*
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* drm ABI mandates that we remove any deleted framebuffers from active
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* useage. But since most sane clients only remove framebuffers they no
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* longer need, try to optimize this away.
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*
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* Since we're holding a reference ourselves, observing a refcount of 1
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* means that we're the last holder and can skip it. Also, the refcount
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* can never increase from 1 again, so we don't need any barriers or
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* locks.
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*
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* Note that userspace could try to race with use and instate a new
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* usage _after_ we've cleared all current ones. End result will be an
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* in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
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* in this manner.
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*/
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if (drm_framebuffer_read_refcount(fb) > 1) {
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drm_modeset_lock_all(dev);
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/* remove from any CRTC */
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drm_for_each_crtc(crtc, dev) {
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if (crtc->primary->fb == fb) {
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/* should turn off the crtc */
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if (drm_crtc_force_disable(crtc))
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DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
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}
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}
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drm_for_each_plane(plane, dev) {
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if (plane->fb == fb)
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drm_plane_force_disable(plane);
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}
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drm_modeset_unlock_all(dev);
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}
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drm_framebuffer_unreference(fb);
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}
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EXPORT_SYMBOL(drm_framebuffer_remove);
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DEFINE_WW_CLASS(crtc_ww_class);
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DEFINE_WW_CLASS(crtc_ww_class);
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static unsigned int drm_num_crtcs(struct drm_device *dev)
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static unsigned int drm_num_crtcs(struct drm_device *dev)
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@ -3011,7 +2814,7 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
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*/
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*/
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if (req->flags & DRM_MODE_CURSOR_BO) {
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if (req->flags & DRM_MODE_CURSOR_BO) {
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if (req->handle) {
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if (req->handle) {
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fb = internal_framebuffer_create(dev, &fbreq, file_priv);
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fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
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if (IS_ERR(fb)) {
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if (IS_ERR(fb)) {
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DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
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DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
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return PTR_ERR(fb);
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return PTR_ERR(fb);
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@ -3209,581 +3012,6 @@ uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
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}
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}
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EXPORT_SYMBOL(drm_mode_legacy_fb_format);
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EXPORT_SYMBOL(drm_mode_legacy_fb_format);
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/**
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* drm_mode_addfb - add an FB to the graphics configuration
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* @dev: drm device for the ioctl
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* @data: data pointer for the ioctl
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* @file_priv: drm file for the ioctl call
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*
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* Add a new FB to the specified CRTC, given a user request. This is the
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* original addfb ioctl which only supported RGB formats.
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*
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* Called by the user via ioctl.
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*
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* Returns:
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* Zero on success, negative errno on failure.
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*/
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int drm_mode_addfb(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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struct drm_mode_fb_cmd *or = data;
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struct drm_mode_fb_cmd2 r = {};
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int ret;
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/* convert to new format and call new ioctl */
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r.fb_id = or->fb_id;
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r.width = or->width;
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r.height = or->height;
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r.pitches[0] = or->pitch;
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r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
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r.handles[0] = or->handle;
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ret = drm_mode_addfb2(dev, &r, file_priv);
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if (ret)
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return ret;
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or->fb_id = r.fb_id;
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return 0;
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}
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static int format_check(const struct drm_mode_fb_cmd2 *r)
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{
|
|
||||||
uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
|
|
||||||
char *format_name;
|
|
||||||
|
|
||||||
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:
|
|
||||||
format_name = drm_get_format_name(r->pixel_format);
|
|
||||||
DRM_DEBUG_KMS("invalid pixel format %s\n", format_name);
|
|
||||||
kfree(format_name);
|
|
||||||
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) {
|
|
||||||
char *format_name = drm_get_format_name(r->pixel_format);
|
|
||||||
DRM_DEBUG_KMS("bad framebuffer format %s\n", format_name);
|
|
||||||
kfree(format_name);
|
|
||||||
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->width);
|
|
||||||
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;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
|
|
||||||
DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
|
|
||||||
r->modifier[i], i);
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* modifier specific checks: */
|
|
||||||
switch (r->modifier[i]) {
|
|
||||||
case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
|
|
||||||
/* NOTE: the pitch restriction may be lifted later if it turns
|
|
||||||
* out that no hw has this restriction:
|
|
||||||
*/
|
|
||||||
if (r->pixel_format != DRM_FORMAT_NV12 ||
|
|
||||||
width % 128 || height % 32 ||
|
|
||||||
r->pitches[i] % 128) {
|
|
||||||
DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = num_planes; i < 4; i++) {
|
|
||||||
if (r->modifier[i]) {
|
|
||||||
DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
|
|
||||||
if (!(r->flags & DRM_MODE_FB_MODIFIERS))
|
|
||||||
continue;
|
|
||||||
|
|
||||||
if (r->handles[i]) {
|
|
||||||
DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (r->pitches[i]) {
|
|
||||||
DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (r->offsets[i]) {
|
|
||||||
DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
static struct drm_framebuffer *
|
|
||||||
internal_framebuffer_create(struct drm_device *dev,
|
|
||||||
const struct drm_mode_fb_cmd2 *r,
|
|
||||||
struct drm_file *file_priv)
|
|
||||||
{
|
|
||||||
struct drm_mode_config *config = &dev->mode_config;
|
|
||||||
struct drm_framebuffer *fb;
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
|
|
||||||
DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
|
|
||||||
return ERR_PTR(-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 ERR_PTR(-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 ERR_PTR(-EINVAL);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (r->flags & DRM_MODE_FB_MODIFIERS &&
|
|
||||||
!dev->mode_config.allow_fb_modifiers) {
|
|
||||||
DRM_DEBUG_KMS("driver does not support fb modifiers\n");
|
|
||||||
return ERR_PTR(-EINVAL);
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = framebuffer_check(r);
|
|
||||||
if (ret)
|
|
||||||
return ERR_PTR(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 fb;
|
|
||||||
}
|
|
||||||
|
|
||||||
return fb;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* 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. This is
|
|
||||||
* the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
|
|
||||||
* and uses fourcc codes as pixel format specifiers.
|
|
||||||
*
|
|
||||||
* Called by the user via ioctl.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* Zero on success, negative 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_framebuffer *fb;
|
|
||||||
|
|
||||||
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
||||||
return -EINVAL;
|
|
||||||
|
|
||||||
fb = internal_framebuffer_create(dev, r, file_priv);
|
|
||||||
if (IS_ERR(fb))
|
|
||||||
return PTR_ERR(fb);
|
|
||||||
|
|
||||||
DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
|
|
||||||
r->fb_id = fb->base.id;
|
|
||||||
|
|
||||||
/* Transfer ownership to the filp for reaping on close */
|
|
||||||
mutex_lock(&file_priv->fbs_lock);
|
|
||||||
list_add(&fb->filp_head, &file_priv->fbs);
|
|
||||||
mutex_unlock(&file_priv->fbs_lock);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
struct drm_mode_rmfb_work {
|
|
||||||
struct work_struct work;
|
|
||||||
struct list_head fbs;
|
|
||||||
};
|
|
||||||
|
|
||||||
static void drm_mode_rmfb_work_fn(struct work_struct *w)
|
|
||||||
{
|
|
||||||
struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
|
|
||||||
|
|
||||||
while (!list_empty(&arg->fbs)) {
|
|
||||||
struct drm_framebuffer *fb =
|
|
||||||
list_first_entry(&arg->fbs, typeof(*fb), filp_head);
|
|
||||||
|
|
||||||
list_del_init(&fb->filp_head);
|
|
||||||
drm_framebuffer_remove(fb);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* 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, negative 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;
|
|
||||||
|
|
||||||
fb = drm_framebuffer_lookup(dev, *id);
|
|
||||||
if (!fb)
|
|
||||||
return -ENOENT;
|
|
||||||
|
|
||||||
mutex_lock(&file_priv->fbs_lock);
|
|
||||||
list_for_each_entry(fbl, &file_priv->fbs, filp_head)
|
|
||||||
if (fb == fbl)
|
|
||||||
found = 1;
|
|
||||||
if (!found) {
|
|
||||||
mutex_unlock(&file_priv->fbs_lock);
|
|
||||||
goto fail_unref;
|
|
||||||
}
|
|
||||||
|
|
||||||
list_del_init(&fb->filp_head);
|
|
||||||
mutex_unlock(&file_priv->fbs_lock);
|
|
||||||
|
|
||||||
/* drop the reference we picked up in framebuffer lookup */
|
|
||||||
drm_framebuffer_unreference(fb);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* we now own the reference that was stored in the fbs list
|
|
||||||
*
|
|
||||||
* drm_framebuffer_remove may fail with -EINTR on pending signals,
|
|
||||||
* so run this in a separate stack as there's no way to correctly
|
|
||||||
* handle this after the fb is already removed from the lookup table.
|
|
||||||
*/
|
|
||||||
if (drm_framebuffer_read_refcount(fb) > 1) {
|
|
||||||
struct drm_mode_rmfb_work arg;
|
|
||||||
|
|
||||||
INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
|
|
||||||
INIT_LIST_HEAD(&arg.fbs);
|
|
||||||
list_add_tail(&fb->filp_head, &arg.fbs);
|
|
||||||
|
|
||||||
schedule_work(&arg.work);
|
|
||||||
flush_work(&arg.work);
|
|
||||||
destroy_work_on_stack(&arg.work);
|
|
||||||
} else
|
|
||||||
drm_framebuffer_unreference(fb);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
fail_unref:
|
|
||||||
drm_framebuffer_unreference(fb);
|
|
||||||
return -ENOENT;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* 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, negative 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 -ENOENT;
|
|
||||||
|
|
||||||
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) {
|
|
||||||
if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
|
|
||||||
drm_is_control_client(file_priv)) {
|
|
||||||
ret = fb->funcs->create_handle(fb, file_priv,
|
|
||||||
&r->handle);
|
|
||||||
} else {
|
|
||||||
/* GET_FB() is an unprivileged ioctl so we must not
|
|
||||||
* return a buffer-handle to non-master processes! For
|
|
||||||
* backwards-compatibility reasons, we cannot make
|
|
||||||
* GET_FB() privileged, so just return an invalid handle
|
|
||||||
* for non-masters. */
|
|
||||||
r->handle = 0;
|
|
||||||
ret = 0;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
ret = -ENODEV;
|
|
||||||
}
|
|
||||||
|
|
||||||
drm_framebuffer_unreference(fb);
|
|
||||||
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
|
|
||||||
* @dev: drm device for the ioctl
|
|
||||||
* @data: data pointer for the ioctl
|
|
||||||
* @file_priv: drm file for the ioctl call
|
|
||||||
*
|
|
||||||
* Lookup the FB and flush out the damaged area supplied by userspace as a clip
|
|
||||||
* rectangle list. Generic userspace which does frontbuffer rendering must call
|
|
||||||
* this ioctl to flush out the changes on manual-update display outputs, e.g.
|
|
||||||
* usb display-link, mipi manual update panels or edp panel self refresh modes.
|
|
||||||
*
|
|
||||||
* Modesetting drivers which always update the frontbuffer do not need to
|
|
||||||
* implement the corresponding ->dirty framebuffer callback.
|
|
||||||
*
|
|
||||||
* Called by the user via ioctl.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* Zero on success, negative errno on failure.
|
|
||||||
*/
|
|
||||||
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 -ENOENT;
|
|
||||||
|
|
||||||
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 = kcalloc(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) {
|
|
||||||
ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
|
|
||||||
clips, num_clips);
|
|
||||||
} 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, negative errno on failure.
|
|
||||||
*/
|
|
||||||
void drm_fb_release(struct drm_file *priv)
|
|
||||||
{
|
|
||||||
struct drm_framebuffer *fb, *tfb;
|
|
||||||
struct drm_mode_rmfb_work arg;
|
|
||||||
|
|
||||||
INIT_LIST_HEAD(&arg.fbs);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* When the file gets released that means no one else can access the fb
|
|
||||||
* list any more, so no need to grab fpriv->fbs_lock. And we need to
|
|
||||||
* avoid upsetting lockdep since the universal cursor code adds a
|
|
||||||
* framebuffer while holding mutex locks.
|
|
||||||
*
|
|
||||||
* Note that a real deadlock between fpriv->fbs_lock and the modeset
|
|
||||||
* locks is impossible here since no one else but this function can get
|
|
||||||
* at it any more.
|
|
||||||
*/
|
|
||||||
list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
|
|
||||||
if (drm_framebuffer_read_refcount(fb) > 1) {
|
|
||||||
list_move_tail(&fb->filp_head, &arg.fbs);
|
|
||||||
} else {
|
|
||||||
list_del_init(&fb->filp_head);
|
|
||||||
|
|
||||||
/* This drops the fpriv->fbs reference. */
|
|
||||||
drm_framebuffer_unreference(fb);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!list_empty(&arg.fbs)) {
|
|
||||||
INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
|
|
||||||
|
|
||||||
schedule_work(&arg.work);
|
|
||||||
flush_work(&arg.work);
|
|
||||||
destroy_work_on_stack(&arg.work);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static bool drm_property_type_valid(struct drm_property *property)
|
static bool drm_property_type_valid(struct drm_property *property)
|
||||||
{
|
{
|
||||||
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
|
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
|
||||||
|
@ -4496,7 +3724,7 @@ struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
|
||||||
struct drm_mode_object *obj;
|
struct drm_mode_object *obj;
|
||||||
struct drm_property_blob *blob = NULL;
|
struct drm_property_blob *blob = NULL;
|
||||||
|
|
||||||
obj = _object_find(dev, id, DRM_MODE_OBJECT_BLOB);
|
obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
|
||||||
if (obj)
|
if (obj)
|
||||||
blob = obj_to_blob(obj);
|
blob = obj_to_blob(obj);
|
||||||
return blob;
|
return blob;
|
||||||
|
@ -4892,7 +4120,8 @@ bool drm_property_change_valid_get(struct drm_property *property,
|
||||||
if (value == 0)
|
if (value == 0)
|
||||||
return true;
|
return true;
|
||||||
|
|
||||||
*ref = _object_find(property->dev, value, property->values[0]);
|
*ref = __drm_mode_object_find(property->dev, value,
|
||||||
|
property->values[0]);
|
||||||
return *ref != NULL;
|
return *ref != NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -35,8 +35,17 @@
|
||||||
/* drm_crtc.c */
|
/* drm_crtc.c */
|
||||||
void drm_connector_ida_init(void);
|
void drm_connector_ida_init(void);
|
||||||
void drm_connector_ida_destroy(void);
|
void drm_connector_ida_destroy(void);
|
||||||
|
int drm_mode_object_get_reg(struct drm_device *dev,
|
||||||
|
struct drm_mode_object *obj,
|
||||||
|
uint32_t obj_type,
|
||||||
|
bool register_obj,
|
||||||
|
void (*obj_free_cb)(struct kref *kref));
|
||||||
|
void drm_mode_object_register(struct drm_device *dev,
|
||||||
|
struct drm_mode_object *obj);
|
||||||
int drm_mode_object_get(struct drm_device *dev,
|
int drm_mode_object_get(struct drm_device *dev,
|
||||||
struct drm_mode_object *obj, uint32_t obj_type);
|
struct drm_mode_object *obj, uint32_t obj_type);
|
||||||
|
struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
|
||||||
|
uint32_t id, uint32_t type);
|
||||||
void drm_mode_object_unregister(struct drm_device *dev,
|
void drm_mode_object_unregister(struct drm_device *dev,
|
||||||
struct drm_mode_object *object);
|
struct drm_mode_object *object);
|
||||||
bool drm_property_change_valid_get(struct drm_property *property,
|
bool drm_property_change_valid_get(struct drm_property *property,
|
||||||
|
@ -64,18 +73,6 @@ int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
|
||||||
int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
|
int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
|
||||||
void *data, struct drm_file *file_priv);
|
void *data, struct drm_file *file_priv);
|
||||||
|
|
||||||
/* framebuffer IOCTLs */
|
|
||||||
extern int drm_mode_addfb(struct drm_device *dev,
|
|
||||||
void *data, struct drm_file *file_priv);
|
|
||||||
extern int drm_mode_addfb2(struct drm_device *dev,
|
|
||||||
void *data, struct drm_file *file_priv);
|
|
||||||
int drm_mode_rmfb(struct drm_device *dev,
|
|
||||||
void *data, struct drm_file *file_priv);
|
|
||||||
int drm_mode_getfb(struct drm_device *dev,
|
|
||||||
void *data, struct drm_file *file_priv);
|
|
||||||
int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
|
|
||||||
void *data, struct drm_file *file_priv);
|
|
||||||
|
|
||||||
/* IOCTLs */
|
/* IOCTLs */
|
||||||
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
|
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
|
||||||
struct drm_file *file_priv);
|
struct drm_file *file_priv);
|
||||||
|
@ -120,6 +117,25 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev,
|
||||||
int drm_mode_page_flip_ioctl(struct drm_device *dev,
|
int drm_mode_page_flip_ioctl(struct drm_device *dev,
|
||||||
void *data, struct drm_file *file_priv);
|
void *data, struct drm_file *file_priv);
|
||||||
|
|
||||||
|
/* drm_framebuffer.c */
|
||||||
|
struct drm_framebuffer *
|
||||||
|
drm_internal_framebuffer_create(struct drm_device *dev,
|
||||||
|
const struct drm_mode_fb_cmd2 *r,
|
||||||
|
struct drm_file *file_priv);
|
||||||
|
void drm_framebuffer_free(struct kref *kref);
|
||||||
|
|
||||||
|
/* IOCTL */
|
||||||
|
int drm_mode_addfb(struct drm_device *dev,
|
||||||
|
void *data, struct drm_file *file_priv);
|
||||||
|
int drm_mode_addfb2(struct drm_device *dev,
|
||||||
|
void *data, struct drm_file *file_priv);
|
||||||
|
int drm_mode_rmfb(struct drm_device *dev,
|
||||||
|
void *data, struct drm_file *file_priv);
|
||||||
|
int drm_mode_getfb(struct drm_device *dev,
|
||||||
|
void *data, struct drm_file *file_priv);
|
||||||
|
int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
|
||||||
|
void *data, struct drm_file *file_priv);
|
||||||
|
|
||||||
/* drm_atomic.c */
|
/* drm_atomic.c */
|
||||||
int drm_atomic_get_property(struct drm_mode_object *obj,
|
int drm_atomic_get_property(struct drm_mode_object *obj,
|
||||||
struct drm_property *property, uint64_t *val);
|
struct drm_property *property, uint64_t *val);
|
||||||
|
|
|
@ -0,0 +1,796 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
||||||
|
* documentation for any purpose is hereby granted without fee, provided that
|
||||||
|
* the above copyright notice appear in all copies and that both that copyright
|
||||||
|
* notice and this permission notice appear in supporting documentation, and
|
||||||
|
* that the name of the copyright holders not be used in advertising or
|
||||||
|
* publicity pertaining to distribution of the software without specific,
|
||||||
|
* written prior permission. The copyright holders make no representations
|
||||||
|
* about the suitability of this software for any purpose. It is provided "as
|
||||||
|
* is" without express or implied warranty.
|
||||||
|
*
|
||||||
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
||||||
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
||||||
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
||||||
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
||||||
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
||||||
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
||||||
|
* OF THIS SOFTWARE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/export.h>
|
||||||
|
#include <drm/drmP.h>
|
||||||
|
#include <drm/drm_auth.h>
|
||||||
|
#include <drm/drm_framebuffer.h>
|
||||||
|
|
||||||
|
#include "drm_crtc_internal.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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. This is the
|
||||||
|
* original addfb ioctl which only supported RGB formats.
|
||||||
|
*
|
||||||
|
* Called by the user via ioctl.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* Zero on success, negative 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 = {};
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
/* convert to new format and call new ioctl */
|
||||||
|
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;
|
||||||
|
|
||||||
|
ret = drm_mode_addfb2(dev, &r, file_priv);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
or->fb_id = r.fb_id;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int format_check(const struct drm_mode_fb_cmd2 *r)
|
||||||
|
{
|
||||||
|
uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
|
||||||
|
char *format_name;
|
||||||
|
|
||||||
|
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:
|
||||||
|
format_name = drm_get_format_name(r->pixel_format);
|
||||||
|
DRM_DEBUG_KMS("invalid pixel format %s\n", format_name);
|
||||||
|
kfree(format_name);
|
||||||
|
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) {
|
||||||
|
char *format_name = drm_get_format_name(r->pixel_format);
|
||||||
|
DRM_DEBUG_KMS("bad framebuffer format %s\n", format_name);
|
||||||
|
kfree(format_name);
|
||||||
|
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->width);
|
||||||
|
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;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
|
||||||
|
DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
|
||||||
|
r->modifier[i], i);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* modifier specific checks: */
|
||||||
|
switch (r->modifier[i]) {
|
||||||
|
case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
|
||||||
|
/* NOTE: the pitch restriction may be lifted later if it turns
|
||||||
|
* out that no hw has this restriction:
|
||||||
|
*/
|
||||||
|
if (r->pixel_format != DRM_FORMAT_NV12 ||
|
||||||
|
width % 128 || height % 32 ||
|
||||||
|
r->pitches[i] % 128) {
|
||||||
|
DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
for (i = num_planes; i < 4; i++) {
|
||||||
|
if (r->modifier[i]) {
|
||||||
|
DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
|
||||||
|
if (!(r->flags & DRM_MODE_FB_MODIFIERS))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if (r->handles[i]) {
|
||||||
|
DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (r->pitches[i]) {
|
||||||
|
DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (r->offsets[i]) {
|
||||||
|
DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct drm_framebuffer *
|
||||||
|
drm_internal_framebuffer_create(struct drm_device *dev,
|
||||||
|
const struct drm_mode_fb_cmd2 *r,
|
||||||
|
struct drm_file *file_priv)
|
||||||
|
{
|
||||||
|
struct drm_mode_config *config = &dev->mode_config;
|
||||||
|
struct drm_framebuffer *fb;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
|
||||||
|
DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
|
||||||
|
return ERR_PTR(-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 ERR_PTR(-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 ERR_PTR(-EINVAL);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (r->flags & DRM_MODE_FB_MODIFIERS &&
|
||||||
|
!dev->mode_config.allow_fb_modifiers) {
|
||||||
|
DRM_DEBUG_KMS("driver does not support fb modifiers\n");
|
||||||
|
return ERR_PTR(-EINVAL);
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = framebuffer_check(r);
|
||||||
|
if (ret)
|
||||||
|
return ERR_PTR(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 fb;
|
||||||
|
}
|
||||||
|
|
||||||
|
return fb;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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. This is
|
||||||
|
* the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
|
||||||
|
* and uses fourcc codes as pixel format specifiers.
|
||||||
|
*
|
||||||
|
* Called by the user via ioctl.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* Zero on success, negative 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_framebuffer *fb;
|
||||||
|
|
||||||
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
fb = drm_internal_framebuffer_create(dev, r, file_priv);
|
||||||
|
if (IS_ERR(fb))
|
||||||
|
return PTR_ERR(fb);
|
||||||
|
|
||||||
|
DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
|
||||||
|
r->fb_id = fb->base.id;
|
||||||
|
|
||||||
|
/* Transfer ownership to the filp for reaping on close */
|
||||||
|
mutex_lock(&file_priv->fbs_lock);
|
||||||
|
list_add(&fb->filp_head, &file_priv->fbs);
|
||||||
|
mutex_unlock(&file_priv->fbs_lock);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct drm_mode_rmfb_work {
|
||||||
|
struct work_struct work;
|
||||||
|
struct list_head fbs;
|
||||||
|
};
|
||||||
|
|
||||||
|
static void drm_mode_rmfb_work_fn(struct work_struct *w)
|
||||||
|
{
|
||||||
|
struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
|
||||||
|
|
||||||
|
while (!list_empty(&arg->fbs)) {
|
||||||
|
struct drm_framebuffer *fb =
|
||||||
|
list_first_entry(&arg->fbs, typeof(*fb), filp_head);
|
||||||
|
|
||||||
|
list_del_init(&fb->filp_head);
|
||||||
|
drm_framebuffer_remove(fb);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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, negative 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;
|
||||||
|
|
||||||
|
fb = drm_framebuffer_lookup(dev, *id);
|
||||||
|
if (!fb)
|
||||||
|
return -ENOENT;
|
||||||
|
|
||||||
|
mutex_lock(&file_priv->fbs_lock);
|
||||||
|
list_for_each_entry(fbl, &file_priv->fbs, filp_head)
|
||||||
|
if (fb == fbl)
|
||||||
|
found = 1;
|
||||||
|
if (!found) {
|
||||||
|
mutex_unlock(&file_priv->fbs_lock);
|
||||||
|
goto fail_unref;
|
||||||
|
}
|
||||||
|
|
||||||
|
list_del_init(&fb->filp_head);
|
||||||
|
mutex_unlock(&file_priv->fbs_lock);
|
||||||
|
|
||||||
|
/* drop the reference we picked up in framebuffer lookup */
|
||||||
|
drm_framebuffer_unreference(fb);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* we now own the reference that was stored in the fbs list
|
||||||
|
*
|
||||||
|
* drm_framebuffer_remove may fail with -EINTR on pending signals,
|
||||||
|
* so run this in a separate stack as there's no way to correctly
|
||||||
|
* handle this after the fb is already removed from the lookup table.
|
||||||
|
*/
|
||||||
|
if (drm_framebuffer_read_refcount(fb) > 1) {
|
||||||
|
struct drm_mode_rmfb_work arg;
|
||||||
|
|
||||||
|
INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
|
||||||
|
INIT_LIST_HEAD(&arg.fbs);
|
||||||
|
list_add_tail(&fb->filp_head, &arg.fbs);
|
||||||
|
|
||||||
|
schedule_work(&arg.work);
|
||||||
|
flush_work(&arg.work);
|
||||||
|
destroy_work_on_stack(&arg.work);
|
||||||
|
} else
|
||||||
|
drm_framebuffer_unreference(fb);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
fail_unref:
|
||||||
|
drm_framebuffer_unreference(fb);
|
||||||
|
return -ENOENT;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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, negative 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 -ENOENT;
|
||||||
|
|
||||||
|
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) {
|
||||||
|
if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
|
||||||
|
drm_is_control_client(file_priv)) {
|
||||||
|
ret = fb->funcs->create_handle(fb, file_priv,
|
||||||
|
&r->handle);
|
||||||
|
} else {
|
||||||
|
/* GET_FB() is an unprivileged ioctl so we must not
|
||||||
|
* return a buffer-handle to non-master processes! For
|
||||||
|
* backwards-compatibility reasons, we cannot make
|
||||||
|
* GET_FB() privileged, so just return an invalid handle
|
||||||
|
* for non-masters. */
|
||||||
|
r->handle = 0;
|
||||||
|
ret = 0;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
ret = -ENODEV;
|
||||||
|
}
|
||||||
|
|
||||||
|
drm_framebuffer_unreference(fb);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
|
||||||
|
* @dev: drm device for the ioctl
|
||||||
|
* @data: data pointer for the ioctl
|
||||||
|
* @file_priv: drm file for the ioctl call
|
||||||
|
*
|
||||||
|
* Lookup the FB and flush out the damaged area supplied by userspace as a clip
|
||||||
|
* rectangle list. Generic userspace which does frontbuffer rendering must call
|
||||||
|
* this ioctl to flush out the changes on manual-update display outputs, e.g.
|
||||||
|
* usb display-link, mipi manual update panels or edp panel self refresh modes.
|
||||||
|
*
|
||||||
|
* Modesetting drivers which always update the frontbuffer do not need to
|
||||||
|
* implement the corresponding ->dirty framebuffer callback.
|
||||||
|
*
|
||||||
|
* Called by the user via ioctl.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* Zero on success, negative errno on failure.
|
||||||
|
*/
|
||||||
|
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 -ENOENT;
|
||||||
|
|
||||||
|
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 = kcalloc(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) {
|
||||||
|
ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
|
||||||
|
clips, num_clips);
|
||||||
|
} 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, negative errno on failure.
|
||||||
|
*/
|
||||||
|
void drm_fb_release(struct drm_file *priv)
|
||||||
|
{
|
||||||
|
struct drm_framebuffer *fb, *tfb;
|
||||||
|
struct drm_mode_rmfb_work arg;
|
||||||
|
|
||||||
|
INIT_LIST_HEAD(&arg.fbs);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* When the file gets released that means no one else can access the fb
|
||||||
|
* list any more, so no need to grab fpriv->fbs_lock. And we need to
|
||||||
|
* avoid upsetting lockdep since the universal cursor code adds a
|
||||||
|
* framebuffer while holding mutex locks.
|
||||||
|
*
|
||||||
|
* Note that a real deadlock between fpriv->fbs_lock and the modeset
|
||||||
|
* locks is impossible here since no one else but this function can get
|
||||||
|
* at it any more.
|
||||||
|
*/
|
||||||
|
list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
|
||||||
|
if (drm_framebuffer_read_refcount(fb) > 1) {
|
||||||
|
list_move_tail(&fb->filp_head, &arg.fbs);
|
||||||
|
} else {
|
||||||
|
list_del_init(&fb->filp_head);
|
||||||
|
|
||||||
|
/* This drops the fpriv->fbs reference. */
|
||||||
|
drm_framebuffer_unreference(fb);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!list_empty(&arg.fbs)) {
|
||||||
|
INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
|
||||||
|
|
||||||
|
schedule_work(&arg.work);
|
||||||
|
flush_work(&arg.work);
|
||||||
|
destroy_work_on_stack(&arg.work);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void drm_framebuffer_free(struct kref *kref)
|
||||||
|
{
|
||||||
|
struct drm_framebuffer *fb =
|
||||||
|
container_of(kref, struct drm_framebuffer, base.refcount);
|
||||||
|
struct drm_device *dev = fb->dev;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The lookup idr holds a weak reference, which has not necessarily been
|
||||||
|
* removed at this point. Check for that.
|
||||||
|
*/
|
||||||
|
drm_mode_object_unregister(dev, &fb->base);
|
||||||
|
|
||||||
|
fb->funcs->destroy(fb);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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;
|
||||||
|
|
||||||
|
INIT_LIST_HEAD(&fb->filp_head);
|
||||||
|
fb->dev = dev;
|
||||||
|
fb->funcs = funcs;
|
||||||
|
|
||||||
|
ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
|
||||||
|
false, drm_framebuffer_free);
|
||||||
|
if (ret)
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
mutex_lock(&dev->mode_config.fb_lock);
|
||||||
|
dev->mode_config.num_fb++;
|
||||||
|
list_add(&fb->head, &dev->mode_config.fb_list);
|
||||||
|
mutex_unlock(&dev->mode_config.fb_lock);
|
||||||
|
|
||||||
|
drm_mode_object_register(dev, &fb->base);
|
||||||
|
out:
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_framebuffer_init);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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, using @drm_framebuffer_unreference.
|
||||||
|
*/
|
||||||
|
struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
|
||||||
|
uint32_t id)
|
||||||
|
{
|
||||||
|
struct drm_mode_object *obj;
|
||||||
|
struct drm_framebuffer *fb = NULL;
|
||||||
|
|
||||||
|
obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_FB);
|
||||||
|
if (obj)
|
||||||
|
fb = obj_to_fb(obj);
|
||||||
|
return fb;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_framebuffer_lookup);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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;
|
||||||
|
|
||||||
|
if (!fb)
|
||||||
|
return;
|
||||||
|
|
||||||
|
dev = fb->dev;
|
||||||
|
|
||||||
|
/* Mark fb as reaped and drop idr ref. */
|
||||||
|
drm_mode_object_unregister(dev, &fb->base);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_framebuffer_unregister_private);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_framebuffer_cleanup - remove a framebuffer object
|
||||||
|
* @fb: framebuffer to remove
|
||||||
|
*
|
||||||
|
* Cleanup framebuffer. This function is intended to be used from the drivers
|
||||||
|
* ->destroy callback. It can also be used to clean up driver private
|
||||||
|
* framebuffers embedded into a larger structure.
|
||||||
|
*
|
||||||
|
* 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;
|
||||||
|
struct drm_crtc *crtc;
|
||||||
|
struct drm_plane *plane;
|
||||||
|
|
||||||
|
if (!fb)
|
||||||
|
return;
|
||||||
|
|
||||||
|
dev = fb->dev;
|
||||||
|
|
||||||
|
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 (drm_framebuffer_read_refcount(fb) > 1) {
|
||||||
|
drm_modeset_lock_all(dev);
|
||||||
|
/* remove from any CRTC */
|
||||||
|
drm_for_each_crtc(crtc, dev) {
|
||||||
|
if (crtc->primary->fb == fb) {
|
||||||
|
/* should turn off the crtc */
|
||||||
|
if (drm_crtc_force_disable(crtc))
|
||||||
|
DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
drm_for_each_plane(plane, dev) {
|
||||||
|
if (plane->fb == fb)
|
||||||
|
drm_plane_force_disable(plane);
|
||||||
|
}
|
||||||
|
drm_modeset_unlock_all(dev);
|
||||||
|
}
|
||||||
|
|
||||||
|
drm_framebuffer_unreference(fb);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(drm_framebuffer_remove);
|
|
@ -36,10 +36,12 @@
|
||||||
#include <uapi/drm/drm_fourcc.h>
|
#include <uapi/drm/drm_fourcc.h>
|
||||||
#include <drm/drm_modeset_lock.h>
|
#include <drm/drm_modeset_lock.h>
|
||||||
#include <drm/drm_rect.h>
|
#include <drm/drm_rect.h>
|
||||||
|
#include <drm/drm_modeset.h>
|
||||||
|
#include <drm/drm_framebuffer.h>
|
||||||
|
#include <drm/drm_modes.h>
|
||||||
|
|
||||||
struct drm_device;
|
struct drm_device;
|
||||||
struct drm_mode_set;
|
struct drm_mode_set;
|
||||||
struct drm_framebuffer;
|
|
||||||
struct drm_object_properties;
|
struct drm_object_properties;
|
||||||
struct drm_file;
|
struct drm_file;
|
||||||
struct drm_clip_rect;
|
struct drm_clip_rect;
|
||||||
|
@ -47,14 +49,6 @@ struct device_node;
|
||||||
struct fence;
|
struct fence;
|
||||||
struct edid;
|
struct edid;
|
||||||
|
|
||||||
struct drm_mode_object {
|
|
||||||
uint32_t id;
|
|
||||||
uint32_t type;
|
|
||||||
struct drm_object_properties *properties;
|
|
||||||
struct kref refcount;
|
|
||||||
void (*free_cb)(struct kref *kref);
|
|
||||||
};
|
|
||||||
|
|
||||||
#define DRM_OBJECT_MAX_PROPERTY 24
|
#define DRM_OBJECT_MAX_PROPERTY 24
|
||||||
struct drm_object_properties {
|
struct drm_object_properties {
|
||||||
int count, atomic_count;
|
int count, atomic_count;
|
||||||
|
@ -94,15 +88,6 @@ static inline uint64_t I642U64(int64_t val)
|
||||||
#define DRM_REFLECT_Y BIT(5)
|
#define DRM_REFLECT_Y BIT(5)
|
||||||
#define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
|
#define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
|
||||||
|
|
||||||
enum drm_connector_force {
|
|
||||||
DRM_FORCE_UNSPECIFIED,
|
|
||||||
DRM_FORCE_OFF,
|
|
||||||
DRM_FORCE_ON, /* force on analog part normally */
|
|
||||||
DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
|
|
||||||
};
|
|
||||||
|
|
||||||
#include <drm/drm_modes.h>
|
|
||||||
|
|
||||||
enum drm_connector_status {
|
enum drm_connector_status {
|
||||||
connector_status_connected = 1,
|
connector_status_connected = 1,
|
||||||
connector_status_disconnected = 2,
|
connector_status_disconnected = 2,
|
||||||
|
@ -166,101 +151,6 @@ struct drm_tile_group {
|
||||||
u8 group_data[8];
|
u8 group_data[8];
|
||||||
};
|
};
|
||||||
|
|
||||||
/**
|
|
||||||
* struct drm_framebuffer_funcs - framebuffer hooks
|
|
||||||
*/
|
|
||||||
struct drm_framebuffer_funcs {
|
|
||||||
/**
|
|
||||||
* @destroy:
|
|
||||||
*
|
|
||||||
* Clean up framebuffer resources, specifically also unreference the
|
|
||||||
* backing storage. The core guarantees to call this function for every
|
|
||||||
* framebuffer successfully created by ->fb_create() in
|
|
||||||
* &drm_mode_config_funcs. Drivers must also call
|
|
||||||
* drm_framebuffer_cleanup() to release DRM core resources for this
|
|
||||||
* framebuffer.
|
|
||||||
*/
|
|
||||||
void (*destroy)(struct drm_framebuffer *framebuffer);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @create_handle:
|
|
||||||
*
|
|
||||||
* Create a buffer handle in the driver-specific buffer manager (either
|
|
||||||
* GEM or TTM) valid for the passed-in struct &drm_file. This is used by
|
|
||||||
* the core to implement the GETFB IOCTL, which returns (for
|
|
||||||
* sufficiently priviledged user) also a native buffer handle. This can
|
|
||||||
* be used for seamless transitions between modesetting clients by
|
|
||||||
* copying the current screen contents to a private buffer and blending
|
|
||||||
* between that and the new contents.
|
|
||||||
*
|
|
||||||
* GEM based drivers should call drm_gem_handle_create() to create the
|
|
||||||
* handle.
|
|
||||||
*
|
|
||||||
* RETURNS:
|
|
||||||
*
|
|
||||||
* 0 on success or a negative error code on failure.
|
|
||||||
*/
|
|
||||||
int (*create_handle)(struct drm_framebuffer *fb,
|
|
||||||
struct drm_file *file_priv,
|
|
||||||
unsigned int *handle);
|
|
||||||
/**
|
|
||||||
* @dirty:
|
|
||||||
*
|
|
||||||
* Optional callback for the dirty fb IOCTL.
|
|
||||||
*
|
|
||||||
* Userspace can notify the driver via this callback that an area of the
|
|
||||||
* framebuffer has changed and should be flushed to the display
|
|
||||||
* hardware. This can also be used internally, e.g. by the fbdev
|
|
||||||
* emulation, though that's not the case currently.
|
|
||||||
*
|
|
||||||
* See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
|
|
||||||
* for more information as all the semantics and arguments have a one to
|
|
||||||
* one mapping on this function.
|
|
||||||
*
|
|
||||||
* RETURNS:
|
|
||||||
*
|
|
||||||
* 0 on success or a negative error code on failure.
|
|
||||||
*/
|
|
||||||
int (*dirty)(struct drm_framebuffer *framebuffer,
|
|
||||||
struct drm_file *file_priv, unsigned flags,
|
|
||||||
unsigned color, struct drm_clip_rect *clips,
|
|
||||||
unsigned num_clips);
|
|
||||||
};
|
|
||||||
|
|
||||||
struct drm_framebuffer {
|
|
||||||
struct drm_device *dev;
|
|
||||||
/*
|
|
||||||
* Note that the fb is refcounted for the benefit of driver internals,
|
|
||||||
* for example some hw, disabling a CRTC/plane is asynchronous, and
|
|
||||||
* scanout does not actually complete until the next vblank. So some
|
|
||||||
* cleanup (like releasing the reference(s) on the backing GEM bo(s))
|
|
||||||
* should be deferred. In cases like this, the driver would like to
|
|
||||||
* hold a ref to the fb even though it has already been removed from
|
|
||||||
* userspace perspective.
|
|
||||||
* The refcount is stored inside the mode object.
|
|
||||||
*/
|
|
||||||
/*
|
|
||||||
* Place on the dev->mode_config.fb_list, access protected by
|
|
||||||
* dev->mode_config.fb_lock.
|
|
||||||
*/
|
|
||||||
struct list_head head;
|
|
||||||
struct drm_mode_object base;
|
|
||||||
const struct drm_framebuffer_funcs *funcs;
|
|
||||||
unsigned int pitches[4];
|
|
||||||
unsigned int offsets[4];
|
|
||||||
uint64_t modifier[4];
|
|
||||||
unsigned int width;
|
|
||||||
unsigned int height;
|
|
||||||
/* depth can be 15 or 16 */
|
|
||||||
unsigned int depth;
|
|
||||||
int bits_per_pixel;
|
|
||||||
int flags;
|
|
||||||
uint32_t pixel_format; /* fourcc format */
|
|
||||||
int hot_x;
|
|
||||||
int hot_y;
|
|
||||||
struct list_head filp_head;
|
|
||||||
};
|
|
||||||
|
|
||||||
struct drm_property_blob {
|
struct drm_property_blob {
|
||||||
struct drm_mode_object base;
|
struct drm_mode_object base;
|
||||||
struct drm_device *dev;
|
struct drm_device *dev;
|
||||||
|
@ -2888,14 +2778,6 @@ extern int drm_object_property_set_value(struct drm_mode_object *obj,
|
||||||
extern int drm_object_property_get_value(struct drm_mode_object *obj,
|
extern int drm_object_property_get_value(struct drm_mode_object *obj,
|
||||||
struct drm_property *property,
|
struct drm_property *property,
|
||||||
uint64_t *value);
|
uint64_t *value);
|
||||||
extern int drm_framebuffer_init(struct drm_device *dev,
|
|
||||||
struct drm_framebuffer *fb,
|
|
||||||
const struct drm_framebuffer_funcs *funcs);
|
|
||||||
extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
|
|
||||||
uint32_t id);
|
|
||||||
extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
|
|
||||||
extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
|
|
||||||
extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
|
|
||||||
|
|
||||||
extern void drm_object_attach_property(struct drm_mode_object *obj,
|
extern void drm_object_attach_property(struct drm_mode_object *obj,
|
||||||
struct drm_property *property,
|
struct drm_property *property,
|
||||||
|
@ -2976,11 +2858,6 @@ int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
|
||||||
unsigned int zpos);
|
unsigned int zpos);
|
||||||
|
|
||||||
/* Helpers */
|
/* Helpers */
|
||||||
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
|
|
||||||
uint32_t id, uint32_t type);
|
|
||||||
void drm_mode_object_reference(struct drm_mode_object *obj);
|
|
||||||
void drm_mode_object_unreference(struct drm_mode_object *obj);
|
|
||||||
|
|
||||||
static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
|
static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
|
||||||
uint32_t id)
|
uint32_t id)
|
||||||
{
|
{
|
||||||
|
@ -3048,39 +2925,6 @@ static inline uint32_t drm_color_lut_extract(uint32_t user_input,
|
||||||
return clamp_val(val, 0, max);
|
return clamp_val(val, 0, max);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_framebuffer_reference - incr the fb refcnt
|
|
||||||
* @fb: framebuffer
|
|
||||||
*
|
|
||||||
* This functions increments the fb's refcount.
|
|
||||||
*/
|
|
||||||
static inline void drm_framebuffer_reference(struct drm_framebuffer *fb)
|
|
||||||
{
|
|
||||||
drm_mode_object_reference(&fb->base);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* 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.
|
|
||||||
*/
|
|
||||||
static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb)
|
|
||||||
{
|
|
||||||
drm_mode_object_unreference(&fb->base);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* drm_framebuffer_read_refcount - read the framebuffer reference count.
|
|
||||||
* @fb: framebuffer
|
|
||||||
*
|
|
||||||
* This functions returns the framebuffer's reference count.
|
|
||||||
*/
|
|
||||||
static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
|
|
||||||
{
|
|
||||||
return atomic_read(&fb->base.refcount.refcount);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* drm_connector_reference - incr the connector refcnt
|
* drm_connector_reference - incr the connector refcnt
|
||||||
* @connector: connector
|
* @connector: connector
|
||||||
|
|
|
@ -0,0 +1,170 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
||||||
|
* documentation for any purpose is hereby granted without fee, provided that
|
||||||
|
* the above copyright notice appear in all copies and that both that copyright
|
||||||
|
* notice and this permission notice appear in supporting documentation, and
|
||||||
|
* that the name of the copyright holders not be used in advertising or
|
||||||
|
* publicity pertaining to distribution of the software without specific,
|
||||||
|
* written prior permission. The copyright holders make no representations
|
||||||
|
* about the suitability of this software for any purpose. It is provided "as
|
||||||
|
* is" without express or implied warranty.
|
||||||
|
*
|
||||||
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
||||||
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
||||||
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
||||||
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
||||||
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
||||||
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
||||||
|
* OF THIS SOFTWARE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __DRM_FRAMEBUFFER_H__
|
||||||
|
#define __DRM_FRAMEBUFFER_H__
|
||||||
|
|
||||||
|
#include <linux/list.h>
|
||||||
|
#include <linux/ctype.h>
|
||||||
|
#include <drm/drm_modeset.h>
|
||||||
|
|
||||||
|
struct drm_framebuffer;
|
||||||
|
struct drm_file;
|
||||||
|
struct drm_device;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* struct drm_framebuffer_funcs - framebuffer hooks
|
||||||
|
*/
|
||||||
|
struct drm_framebuffer_funcs {
|
||||||
|
/**
|
||||||
|
* @destroy:
|
||||||
|
*
|
||||||
|
* Clean up framebuffer resources, specifically also unreference the
|
||||||
|
* backing storage. The core guarantees to call this function for every
|
||||||
|
* framebuffer successfully created by ->fb_create() in
|
||||||
|
* &drm_mode_config_funcs. Drivers must also call
|
||||||
|
* drm_framebuffer_cleanup() to release DRM core resources for this
|
||||||
|
* framebuffer.
|
||||||
|
*/
|
||||||
|
void (*destroy)(struct drm_framebuffer *framebuffer);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @create_handle:
|
||||||
|
*
|
||||||
|
* Create a buffer handle in the driver-specific buffer manager (either
|
||||||
|
* GEM or TTM) valid for the passed-in struct &drm_file. This is used by
|
||||||
|
* the core to implement the GETFB IOCTL, which returns (for
|
||||||
|
* sufficiently priviledged user) also a native buffer handle. This can
|
||||||
|
* be used for seamless transitions between modesetting clients by
|
||||||
|
* copying the current screen contents to a private buffer and blending
|
||||||
|
* between that and the new contents.
|
||||||
|
*
|
||||||
|
* GEM based drivers should call drm_gem_handle_create() to create the
|
||||||
|
* handle.
|
||||||
|
*
|
||||||
|
* RETURNS:
|
||||||
|
*
|
||||||
|
* 0 on success or a negative error code on failure.
|
||||||
|
*/
|
||||||
|
int (*create_handle)(struct drm_framebuffer *fb,
|
||||||
|
struct drm_file *file_priv,
|
||||||
|
unsigned int *handle);
|
||||||
|
/**
|
||||||
|
* @dirty:
|
||||||
|
*
|
||||||
|
* Optional callback for the dirty fb IOCTL.
|
||||||
|
*
|
||||||
|
* Userspace can notify the driver via this callback that an area of the
|
||||||
|
* framebuffer has changed and should be flushed to the display
|
||||||
|
* hardware. This can also be used internally, e.g. by the fbdev
|
||||||
|
* emulation, though that's not the case currently.
|
||||||
|
*
|
||||||
|
* See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
|
||||||
|
* for more information as all the semantics and arguments have a one to
|
||||||
|
* one mapping on this function.
|
||||||
|
*
|
||||||
|
* RETURNS:
|
||||||
|
*
|
||||||
|
* 0 on success or a negative error code on failure.
|
||||||
|
*/
|
||||||
|
int (*dirty)(struct drm_framebuffer *framebuffer,
|
||||||
|
struct drm_file *file_priv, unsigned flags,
|
||||||
|
unsigned color, struct drm_clip_rect *clips,
|
||||||
|
unsigned num_clips);
|
||||||
|
};
|
||||||
|
|
||||||
|
struct drm_framebuffer {
|
||||||
|
struct drm_device *dev;
|
||||||
|
/*
|
||||||
|
* Note that the fb is refcounted for the benefit of driver internals,
|
||||||
|
* for example some hw, disabling a CRTC/plane is asynchronous, and
|
||||||
|
* scanout does not actually complete until the next vblank. So some
|
||||||
|
* cleanup (like releasing the reference(s) on the backing GEM bo(s))
|
||||||
|
* should be deferred. In cases like this, the driver would like to
|
||||||
|
* hold a ref to the fb even though it has already been removed from
|
||||||
|
* userspace perspective.
|
||||||
|
* The refcount is stored inside the mode object.
|
||||||
|
*/
|
||||||
|
/*
|
||||||
|
* Place on the dev->mode_config.fb_list, access protected by
|
||||||
|
* dev->mode_config.fb_lock.
|
||||||
|
*/
|
||||||
|
struct list_head head;
|
||||||
|
struct drm_mode_object base;
|
||||||
|
const struct drm_framebuffer_funcs *funcs;
|
||||||
|
unsigned int pitches[4];
|
||||||
|
unsigned int offsets[4];
|
||||||
|
uint64_t modifier[4];
|
||||||
|
unsigned int width;
|
||||||
|
unsigned int height;
|
||||||
|
/* depth can be 15 or 16 */
|
||||||
|
unsigned int depth;
|
||||||
|
int bits_per_pixel;
|
||||||
|
int flags;
|
||||||
|
uint32_t pixel_format; /* fourcc format */
|
||||||
|
int hot_x;
|
||||||
|
int hot_y;
|
||||||
|
struct list_head filp_head;
|
||||||
|
};
|
||||||
|
|
||||||
|
int drm_framebuffer_init(struct drm_device *dev,
|
||||||
|
struct drm_framebuffer *fb,
|
||||||
|
const struct drm_framebuffer_funcs *funcs);
|
||||||
|
struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
|
||||||
|
uint32_t id);
|
||||||
|
void drm_framebuffer_remove(struct drm_framebuffer *fb);
|
||||||
|
void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
|
||||||
|
void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_framebuffer_reference - incr the fb refcnt
|
||||||
|
* @fb: framebuffer
|
||||||
|
*
|
||||||
|
* This functions increments the fb's refcount.
|
||||||
|
*/
|
||||||
|
static inline void drm_framebuffer_reference(struct drm_framebuffer *fb)
|
||||||
|
{
|
||||||
|
drm_mode_object_reference(&fb->base);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 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.
|
||||||
|
*/
|
||||||
|
static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb)
|
||||||
|
{
|
||||||
|
drm_mode_object_unreference(&fb->base);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* drm_framebuffer_read_refcount - read the framebuffer reference count.
|
||||||
|
* @fb: framebuffer
|
||||||
|
*
|
||||||
|
* This functions returns the framebuffer's reference count.
|
||||||
|
*/
|
||||||
|
static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
|
||||||
|
{
|
||||||
|
return atomic_read(&fb->base.refcount.refcount);
|
||||||
|
}
|
||||||
|
#endif
|
|
@ -27,6 +27,8 @@
|
||||||
#ifndef __DRM_MODES_H__
|
#ifndef __DRM_MODES_H__
|
||||||
#define __DRM_MODES_H__
|
#define __DRM_MODES_H__
|
||||||
|
|
||||||
|
#include <drm/drm_modeset.h>
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Note on terminology: here, for brevity and convenience, we refer to connector
|
* Note on terminology: here, for brevity and convenience, we refer to connector
|
||||||
* control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS,
|
* control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS,
|
||||||
|
|
|
@ -0,0 +1,50 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
||||||
|
* documentation for any purpose is hereby granted without fee, provided that
|
||||||
|
* the above copyright notice appear in all copies and that both that copyright
|
||||||
|
* notice and this permission notice appear in supporting documentation, and
|
||||||
|
* that the name of the copyright holders not be used in advertising or
|
||||||
|
* publicity pertaining to distribution of the software without specific,
|
||||||
|
* written prior permission. The copyright holders make no representations
|
||||||
|
* about the suitability of this software for any purpose. It is provided "as
|
||||||
|
* is" without express or implied warranty.
|
||||||
|
*
|
||||||
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
||||||
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
||||||
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
||||||
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
||||||
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
||||||
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
||||||
|
* OF THIS SOFTWARE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __DRM_MODESET_H__
|
||||||
|
#define __DRM_MODESET_H__
|
||||||
|
|
||||||
|
#include <linux/kref.h>
|
||||||
|
struct drm_object_properties;
|
||||||
|
|
||||||
|
struct drm_mode_object {
|
||||||
|
uint32_t id;
|
||||||
|
uint32_t type;
|
||||||
|
struct drm_object_properties *properties;
|
||||||
|
struct kref refcount;
|
||||||
|
void (*free_cb)(struct kref *kref);
|
||||||
|
};
|
||||||
|
|
||||||
|
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
|
||||||
|
uint32_t id, uint32_t type);
|
||||||
|
void drm_mode_object_reference(struct drm_mode_object *obj);
|
||||||
|
void drm_mode_object_unreference(struct drm_mode_object *obj);
|
||||||
|
|
||||||
|
/* FIXME: This is temporary until we have a drm_connector.h */
|
||||||
|
enum drm_connector_force {
|
||||||
|
DRM_FORCE_UNSPECIFIED,
|
||||||
|
DRM_FORCE_OFF,
|
||||||
|
DRM_FORCE_ON, /* force on analog part normally */
|
||||||
|
DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif
|
Loading…
Reference in New Issue