1 files changed, 396 insertions, 0 deletions
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
new file mode 100644
index 0000000000..7cf4afae2e
--- /dev/null
+++ b/include/drm/drm_device.h
@@ -0,0 +1,396 @@
+#ifndef _DRM_DEVICE_H_
+#define _DRM_DEVICE_H_
+
+#include <linux/list.h>
+#include <linux/kref.h>
+#include <linux/mutex.h>
+#include <linux/idr.h>
+
+#include <drm/drm_legacy.h>
+#include <drm/drm_mode_config.h>
+
+struct drm_driver;
+struct drm_minor;
+struct drm_master;
+struct drm_vblank_crtc;
+struct drm_vma_offset_manager;
+struct drm_vram_mm;
+struct drm_fb_helper;
+
+struct inode;
+
+struct pci_dev;
+struct pci_controller;
+
+
+/**
+ * enum switch_power_state - power state of drm device
+ */
+
+enum switch_power_state {
+	/** @DRM_SWITCH_POWER_ON: Power state is ON */
+	DRM_SWITCH_POWER_ON = 0,
+
+	/** @DRM_SWITCH_POWER_OFF: Power state is OFF */
+	DRM_SWITCH_POWER_OFF = 1,
+
+	/** @DRM_SWITCH_POWER_CHANGING: Power state is changing */
+	DRM_SWITCH_POWER_CHANGING = 2,
+
+	/** @DRM_SWITCH_POWER_DYNAMIC_OFF: Suspended */
+	DRM_SWITCH_POWER_DYNAMIC_OFF = 3,
+};
+
+/**
+ * struct drm_device - DRM device structure
+ *
+ * This structure represent a complete card that
+ * may contain multiple heads.
+ */
+struct drm_device {
+	/** @if_version: Highest interface version set */
+	int if_version;
+
+	/** @ref: Object ref-count */
+	struct kref ref;
+
+	/** @dev: Device structure of bus-device */
+	struct device *dev;
+
+	/**
+	 * @managed:
+	 *
+	 * Managed resources linked to the lifetime of this &drm_device as
+	 * tracked by @ref.
+	 */
+	struct {
+		/** @managed.resources: managed resources list */
+		struct list_head resources;
+		/** @managed.final_kfree: pointer for final kfree() call */
+		void *final_kfree;
+		/** @managed.lock: protects @managed.resources */
+		spinlock_t lock;
+	} managed;
+
+	/** @driver: DRM driver managing the device */
+	const struct drm_driver *driver;
+
+	/**
+	 * @dev_private:
+	 *
+	 * DRM driver private data. This is deprecated and should be left set to
+	 * NULL.
+	 *
+	 * Instead of using this pointer it is recommended that drivers use
+	 * devm_drm_dev_alloc() and embed struct &drm_device in their larger
+	 * per-device structure.
+	 */
+	void *dev_private;
+
+	/**
+	 * @primary:
+	 *
+	 * Primary node. Drivers should not interact with this
+	 * directly. debugfs interfaces can be registered with
+	 * drm_debugfs_add_file(), and sysfs should be directly added on the
+	 * hardware (and not character device node) struct device @dev.
+	 */
+	struct drm_minor *primary;
+
+	/**
+	 * @render:
+	 *
+	 * Render node. Drivers should not interact with this directly ever.
+	 * Drivers should not expose any additional interfaces in debugfs or
+	 * sysfs on this node.
+	 */
+	struct drm_minor *render;
+
+	/** @accel: Compute Acceleration node */
+	struct drm_minor *accel;
+
+	/**
+	 * @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)
+	 *
+	 * WARNING:
+	 * Only drivers annotated with DRIVER_LEGACY should be using this.
+	 */
+	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
+	 */
+	atomic_t 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;
+
+	/**
+	 * @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;
+
+	/** @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;
+
+	/**
+	 * @debugfs_mutex:
+	 *
+	 * Protects &debugfs_list access.
+	 */
+	struct mutex debugfs_mutex;
+
+	/**
+	 * @debugfs_list:
+	 *
+	 * List of debugfs files to be created by the DRM device. The files
+	 * must be added during drm_dev_register().
+	 */
+	struct list_head debugfs_list;
+
+	/* Everything below here is for legacy driver, never use! */
+	/* private: */
+#if IS_ENABLED(CONFIG_DRM_LEGACY)
+	/* List of devices per driver for stealth attach cleanup */
+	struct list_head legacy_dev_list;
+
+#ifdef __alpha__
+	/** @hose: PCI hose, only used on ALPHA platforms. */
+	struct pci_controller *hose;
+#endif
+
+	/* AGP data */
+	struct drm_agp_head *agp;
+
+	/* 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;
+
+	/* IRQs */
+	bool irq_enabled;
+	int irq;
+#endif
+};
+
+#endif