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sys/dev/drm/core/include/drm/drm_device.h
- This file was added.
#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_hashtab.h> | |||||
#include <drm/drm_mode_config.h> | |||||
struct drm_driver; | |||||
struct drm_minor; | |||||
struct drm_master; | |||||
struct drm_device_dma; | |||||
struct drm_vblank_crtc; | |||||
struct drm_sg_mem; | |||||
struct drm_local_map; | |||||
struct drm_vma_offset_manager; | |||||
struct drm_vram_mm; | |||||
struct drm_fb_helper; | |||||
struct inode; | |||||
struct pci_dev; | |||||
struct pci_controller; | |||||
/** | |||||
* enum drm_switch_power - 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 { | |||||
/** | |||||
* @legacy_dev_list: | |||||
* | |||||
* List of devices per driver for stealth attach cleanup | |||||
*/ | |||||
struct list_head legacy_dev_list; | |||||
/** @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; | |||||
/** @driver: DRM driver managing the device */ | |||||
struct drm_driver *driver; | |||||
/** | |||||
* @dev_private: | |||||
* | |||||
* DRM driver private data. 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; | |||||
#ifdef __FreeBSD__ | |||||
struct drm_sysctl_info *sysctl; | |||||
int sysctl_node_idx; | |||||
void *drm_ttm_bdev; | |||||
void *sysctl_private; | |||||
char busid_str[128]; | |||||
int modesetting; | |||||
/* const drm_pci_id_list_t *id_entry; /\* PCI ID, name, and chipset private *\/ */ | |||||
#define DRM_PCI_RESOURCE_MAX 7 | |||||
#define MAX_ORDER 11 | |||||
struct drm_pci_resource { | |||||
struct resource *res; | |||||
int rid; | |||||
} drm_pcir[DRM_PCI_RESOURCE_MAX]; | |||||
#endif | |||||
/* 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 |