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Instead of using this pointer it is * recommended that drivers use drm_dev_init() and embed struct * &drm_device in their larger per-device structure. */ void *dev_private; /** @primary: Primary node */ struct drm_minor *primary; /** @render: Render node */ struct drm_minor *render; /** * @registered: * * Internally used by drm_dev_register() and drm_connector_register(). */ bool registered; /** * @master: * * Currently active master for this device. * Protected by &master_mutex */ struct drm_master *master; /** * @driver_features: per-device driver features * * Drivers can clear specific flags here to disallow * certain features on a per-device basis while still * sharing a single &struct drm_driver instance across * all devices. */ u32 driver_features; /** * @unplugged: * * Flag to tell if the device has been unplugged. * See drm_dev_enter() and drm_dev_is_unplugged(). */ bool unplugged; /** @anon_inode: inode for private address-space */ struct inode *anon_inode; /** @unique: Unique name of the device */ char *unique; /** * @struct_mutex: * * Lock for others (not &drm_minor.master and &drm_file.is_master) */ struct mutex struct_mutex; /** * @master_mutex: * * Lock for &drm_minor.master and &drm_file.is_master */ struct mutex master_mutex; /** * @open_count: * * Usage counter for outstanding files open, * protected by drm_global_mutex */ int open_count; /** @filelist_mutex: Protects @filelist. */ struct mutex filelist_mutex; /** * @filelist: * * List of userspace clients, linked through &drm_file.lhead. */ struct list_head filelist; /** * @filelist_internal: * * List of open DRM files for in-kernel clients. * Protected by &filelist_mutex. */ struct list_head filelist_internal; /** * @clientlist_mutex: * * Protects &clientlist access. */ struct mutex clientlist_mutex; /** * @clientlist: * * List of in-kernel clients. Protected by &clientlist_mutex. */ struct list_head clientlist; /** * @irq_enabled: * * Indicates that interrupt handling is enabled, specifically vblank * handling. Drivers which don't use drm_irq_install() need to set this * to true manually. */ bool irq_enabled; /** * @irq: Used by the drm_irq_install() and drm_irq_unistall() helpers. */ int irq; /** * @vblank_disable_immediate: * * If true, vblank interrupt will be disabled immediately when the * refcount drops to zero, as opposed to via the vblank disable * timer. * * This can be set to true it the hardware has a working vblank counter * with high-precision timestamping (otherwise there are races) and the * driver uses drm_crtc_vblank_on() and drm_crtc_vblank_off() * appropriately. See also @max_vblank_count and * &drm_crtc_funcs.get_vblank_counter. */ bool vblank_disable_immediate; /** * @vblank: * * Array of vblank tracking structures, one per &struct drm_crtc. For * historical reasons (vblank support predates kernel modesetting) this * is free-standing and not part of &struct drm_crtc itself. It must be * initialized explicitly by calling drm_vblank_init(). */ struct drm_vblank_crtc *vblank; /** * @vblank_time_lock: * * Protects vblank count and time updates during vblank enable/disable */ spinlock_t vblank_time_lock; /** * @vbl_lock: Top-level vblank references lock, wraps the low-level * @vblank_time_lock. */ spinlock_t vbl_lock; /** * @max_vblank_count: * * Maximum value of the vblank registers. This value +1 will result in a * wrap-around of the vblank register. It is used by the vblank core to * handle wrap-arounds. * * If set to zero the vblank core will try to guess the elapsed vblanks * between times when the vblank interrupt is disabled through * high-precision timestamps. That approach is suffering from small * races and imprecision over longer time periods, hence exposing a * hardware vblank counter is always recommended. * * This is the statically configured device wide maximum. The driver * can instead choose to use a runtime configurable per-crtc value * &drm_vblank_crtc.max_vblank_count, in which case @max_vblank_count * must be left at zero. See drm_crtc_set_max_vblank_count() on how * to use the per-crtc value. * * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set. */ u32 max_vblank_count; /** @vblank_event_list: List of vblank events */ struct list_head vblank_event_list; /** * @event_lock: * * Protects @vblank_event_list and event delivery in * general. See drm_send_event() and drm_send_event_locked(). */ spinlock_t event_lock; /** @agp: AGP data */ struct drm_agp_head *agp; /** @pdev: PCI device structure */ struct pci_dev *pdev; #ifdef __alpha__ /** @hose: PCI hose, only used on ALPHA platforms. */ struct pci_controller *hose; #endif /** @num_crtcs: Number of CRTCs on this device */ unsigned int num_crtcs; /** @mode_config: Current mode config */ struct drm_mode_config mode_config; /** @object_name_lock: GEM information */ struct mutex object_name_lock; /** @object_name_idr: GEM information */ struct idr object_name_idr; /** @vma_offset_manager: GEM information */ struct drm_vma_offset_manager *vma_offset_manager; /** @vram_mm: VRAM MM memory manager */ struct drm_vram_mm *vram_mm; /** * @switch_power_state: * * Power state of the client. * Used by drivers supporting the switcheroo driver. * The state is maintained in the * &vga_switcheroo_client_ops.set_gpu_state callback */ enum switch_power_state switch_power_state; /** * @fb_helper: * * Pointer to the fbdev emulation structure. * Set by drm_fb_helper_init() and cleared by drm_fb_helper_fini(). */ struct drm_fb_helper *fb_helper; /* Everything below here is for legacy driver, never use! */ /* private: */ #if IS_ENABLED(CONFIG_DRM_LEGACY) /* Context handle management - linked list of context handles */ struct list_head ctxlist; /* Context handle management - mutex for &ctxlist */ struct mutex ctxlist_mutex; /* Context handle management */ struct idr ctx_idr; /* Memory management - linked list of regions */ struct list_head maplist; /* Memory management - user token hash table for maps */ struct drm_open_hash map_hash; /* Context handle management - list of vmas (for debugging) */ struct list_head vmalist; /* Optional pointer for DMA support */ struct drm_device_dma *dma; /* Context swapping flag */ __volatile__ long context_flag; /* Last current context */ int last_context; /* Lock for &buf_use and a few other things. */ spinlock_t buf_lock; /* Usage counter for buffers in use -- cannot alloc */ int buf_use; /* Buffer allocation in progress */ atomic_t buf_alloc; struct { int context; struct drm_hw_lock *lock; } sigdata; struct drm_local_map *agp_buffer_map; unsigned int agp_buffer_token; /* Scatter gather memory */ struct drm_sg_mem *sg; #endif }; #endif