Daniel Vetter | e4672e5 | 2017-08-02 13:56:01 +0200 | [diff] [blame] | 1 | #ifndef _DRM_DEVICE_H_ |
| 2 | #define _DRM_DEVICE_H_ |
| 3 | |
| 4 | #include <linux/list.h> |
| 5 | #include <linux/kref.h> |
| 6 | #include <linux/mutex.h> |
| 7 | #include <linux/idr.h> |
| 8 | |
| 9 | #include <drm/drm_hashtab.h> |
| 10 | #include <drm/drm_mode_config.h> |
| 11 | |
| 12 | struct drm_driver; |
| 13 | struct drm_minor; |
| 14 | struct drm_master; |
| 15 | struct drm_device_dma; |
| 16 | struct drm_vblank_crtc; |
| 17 | struct drm_sg_mem; |
| 18 | struct drm_local_map; |
| 19 | struct drm_vma_offset_manager; |
Noralf Trønnes | 29ad20b22 | 2017-10-30 16:39:38 +0100 | [diff] [blame] | 20 | struct drm_fb_helper; |
Daniel Vetter | e4672e5 | 2017-08-02 13:56:01 +0200 | [diff] [blame] | 21 | |
| 22 | struct inode; |
| 23 | |
| 24 | struct pci_dev; |
| 25 | struct pci_controller; |
| 26 | |
| 27 | /** |
| 28 | * DRM device structure. This structure represent a complete card that |
| 29 | * may contain multiple heads. |
| 30 | */ |
| 31 | struct drm_device { |
| 32 | struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ |
| 33 | int if_version; /**< Highest interface version set */ |
| 34 | |
| 35 | /** \name Lifetime Management */ |
| 36 | /*@{ */ |
| 37 | struct kref ref; /**< Object ref-count */ |
| 38 | struct device *dev; /**< Device structure of bus-device */ |
| 39 | struct drm_driver *driver; /**< DRM driver managing the device */ |
| 40 | void *dev_private; /**< DRM driver private data */ |
| 41 | struct drm_minor *control; /**< Control node */ |
| 42 | struct drm_minor *primary; /**< Primary node */ |
| 43 | struct drm_minor *render; /**< Render node */ |
| 44 | bool registered; |
| 45 | |
| 46 | /* currently active master for this device. Protected by master_mutex */ |
| 47 | struct drm_master *master; |
| 48 | |
| 49 | atomic_t unplugged; /**< Flag whether dev is dead */ |
| 50 | struct inode *anon_inode; /**< inode for private address-space */ |
| 51 | char *unique; /**< unique name of the device */ |
| 52 | /*@} */ |
| 53 | |
| 54 | /** \name Locks */ |
| 55 | /*@{ */ |
| 56 | struct mutex struct_mutex; /**< For others */ |
| 57 | struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */ |
| 58 | /*@} */ |
| 59 | |
| 60 | /** \name Usage Counters */ |
| 61 | /*@{ */ |
| 62 | int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ |
| 63 | spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */ |
| 64 | int buf_use; /**< Buffers in use -- cannot alloc */ |
| 65 | atomic_t buf_alloc; /**< Buffer allocation in progress */ |
| 66 | /*@} */ |
| 67 | |
| 68 | struct mutex filelist_mutex; |
| 69 | struct list_head filelist; |
| 70 | |
| 71 | /** \name Memory management */ |
| 72 | /*@{ */ |
| 73 | struct list_head maplist; /**< Linked list of regions */ |
| 74 | struct drm_open_hash map_hash; /**< User token hash table for maps */ |
| 75 | |
| 76 | /** \name Context handle management */ |
| 77 | /*@{ */ |
| 78 | struct list_head ctxlist; /**< Linked list of context handles */ |
| 79 | struct mutex ctxlist_mutex; /**< For ctxlist */ |
| 80 | |
| 81 | struct idr ctx_idr; |
| 82 | |
| 83 | struct list_head vmalist; /**< List of vmas (for debugging) */ |
| 84 | |
| 85 | /*@} */ |
| 86 | |
| 87 | /** \name DMA support */ |
| 88 | /*@{ */ |
| 89 | struct drm_device_dma *dma; /**< Optional pointer for DMA support */ |
| 90 | /*@} */ |
| 91 | |
| 92 | /** \name Context support */ |
| 93 | /*@{ */ |
| 94 | |
| 95 | __volatile__ long context_flag; /**< Context swapping flag */ |
| 96 | int last_context; /**< Last current context */ |
| 97 | /*@} */ |
| 98 | |
| 99 | /** |
| 100 | * @irq_enabled: |
| 101 | * |
| 102 | * Indicates that interrupt handling is enabled, specifically vblank |
| 103 | * handling. Drivers which don't use drm_irq_install() need to set this |
| 104 | * to true manually. |
| 105 | */ |
| 106 | bool irq_enabled; |
| 107 | int irq; |
| 108 | |
| 109 | /** |
| 110 | * @vblank_disable_immediate: |
| 111 | * |
| 112 | * If true, vblank interrupt will be disabled immediately when the |
| 113 | * refcount drops to zero, as opposed to via the vblank disable |
| 114 | * timer. |
| 115 | * |
| 116 | * This can be set to true it the hardware has a working vblank counter |
| 117 | * with high-precision timestamping (otherwise there are races) and the |
| 118 | * driver uses drm_crtc_vblank_on() and drm_crtc_vblank_off() |
| 119 | * appropriately. See also @max_vblank_count and |
| 120 | * &drm_crtc_funcs.get_vblank_counter. |
| 121 | */ |
| 122 | bool vblank_disable_immediate; |
| 123 | |
| 124 | /** |
| 125 | * @vblank: |
| 126 | * |
| 127 | * Array of vblank tracking structures, one per &struct drm_crtc. For |
| 128 | * historical reasons (vblank support predates kernel modesetting) this |
| 129 | * is free-standing and not part of &struct drm_crtc itself. It must be |
| 130 | * initialized explicitly by calling drm_vblank_init(). |
| 131 | */ |
| 132 | struct drm_vblank_crtc *vblank; |
| 133 | |
| 134 | spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ |
| 135 | spinlock_t vbl_lock; |
| 136 | |
| 137 | /** |
| 138 | * @max_vblank_count: |
| 139 | * |
| 140 | * Maximum value of the vblank registers. This value +1 will result in a |
| 141 | * wrap-around of the vblank register. It is used by the vblank core to |
| 142 | * handle wrap-arounds. |
| 143 | * |
| 144 | * If set to zero the vblank core will try to guess the elapsed vblanks |
| 145 | * between times when the vblank interrupt is disabled through |
| 146 | * high-precision timestamps. That approach is suffering from small |
| 147 | * races and imprecision over longer time periods, hence exposing a |
| 148 | * hardware vblank counter is always recommended. |
| 149 | * |
| 150 | * If non-zeor, &drm_crtc_funcs.get_vblank_counter must be set. |
| 151 | */ |
| 152 | u32 max_vblank_count; /**< size of vblank counter register */ |
| 153 | |
| 154 | /** |
| 155 | * List of events |
| 156 | */ |
| 157 | struct list_head vblank_event_list; |
| 158 | spinlock_t event_lock; |
| 159 | |
| 160 | /*@} */ |
| 161 | |
| 162 | struct drm_agp_head *agp; /**< AGP data */ |
| 163 | |
| 164 | struct pci_dev *pdev; /**< PCI device structure */ |
| 165 | #ifdef __alpha__ |
| 166 | struct pci_controller *hose; |
| 167 | #endif |
| 168 | |
| 169 | struct drm_sg_mem *sg; /**< Scatter gather memory */ |
| 170 | unsigned int num_crtcs; /**< Number of CRTCs on this device */ |
| 171 | |
| 172 | struct { |
| 173 | int context; |
| 174 | struct drm_hw_lock *lock; |
| 175 | } sigdata; |
| 176 | |
| 177 | struct drm_local_map *agp_buffer_map; |
| 178 | unsigned int agp_buffer_token; |
| 179 | |
| 180 | struct drm_mode_config mode_config; /**< Current mode config */ |
| 181 | |
| 182 | /** \name GEM information */ |
| 183 | /*@{ */ |
| 184 | struct mutex object_name_lock; |
| 185 | struct idr object_name_idr; |
| 186 | struct drm_vma_offset_manager *vma_offset_manager; |
| 187 | /*@} */ |
| 188 | int switch_power_state; |
Noralf Trønnes | 29ad20b22 | 2017-10-30 16:39:38 +0100 | [diff] [blame] | 189 | |
| 190 | /** |
| 191 | * @fb_helper: |
| 192 | * |
| 193 | * Pointer to the fbdev emulation structure. |
| 194 | * Set by drm_fb_helper_init() and cleared by drm_fb_helper_fini(). |
| 195 | */ |
| 196 | struct drm_fb_helper *fb_helper; |
Daniel Vetter | e4672e5 | 2017-08-02 13:56:01 +0200 | [diff] [blame] | 197 | }; |
| 198 | |
| 199 | #endif |