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