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gerrit-public.fairphone.software / kernel / msm-5.4 / a6910434e1b5f2a9fe7cab39b01bae9a7a7bbe70 / . / drivers / gpu / drm / i915 / intel_ringbuffer.h
blob: d3e5f40a80409f4ec721730a3217f1ef1869c099 [file] [log] [blame]
Zou Nan hai8187a2b2010-05-21 09:08:55 +0800[diff] [blame]1#ifndef _INTEL_RINGBUFFER_H_
2#define _INTEL_RINGBUFFER_H_
3
4struct intel_hw_status_page {
5 void *page_addr;
6 unsigned int gfx_addr;
7 struct drm_gem_object *obj;
8};
9
10struct drm_i915_gem_execbuffer2;
11struct intel_ring_buffer {
12 const char *name;
13 struct ring_regs {
14 u32 ctl;
15 u32 head;
16 u32 tail;
17 u32 start;
18 } regs;
19 unsigned int ring_flag;
20 unsigned long size;
21 unsigned int alignment;
22 void *virtual_start;
23 struct drm_device *dev;
24 struct drm_gem_object *gem_object;
25
26 unsigned int head;
27 unsigned int tail;
28 unsigned int space;
Zou Nan hai8187a2b2010-05-21 09:08:55 +0800[diff] [blame]29 struct intel_hw_status_page status_page;
30
31 u32 irq_gem_seqno; /* last seq seem at irq time */
32 u32 waiting_gem_seqno;
33 int user_irq_refcount;
34 void (*user_irq_get)(struct drm_device *dev,
35 struct intel_ring_buffer *ring);
36 void (*user_irq_put)(struct drm_device *dev,
37 struct intel_ring_buffer *ring);
38 void (*setup_status_page)(struct drm_device *dev,
39 struct intel_ring_buffer *ring);
40
41 int (*init)(struct drm_device *dev,
42 struct intel_ring_buffer *ring);
43
44 unsigned int (*get_head)(struct drm_device *dev,
45 struct intel_ring_buffer *ring);
46 unsigned int (*get_tail)(struct drm_device *dev,
47 struct intel_ring_buffer *ring);
48 unsigned int (*get_active_head)(struct drm_device *dev,
49 struct intel_ring_buffer *ring);
50 void (*advance_ring)(struct drm_device *dev,
51 struct intel_ring_buffer *ring);
52 void (*flush)(struct drm_device *dev,
53 struct intel_ring_buffer *ring,
54 u32 invalidate_domains,
55 u32 flush_domains);
56 u32 (*add_request)(struct drm_device *dev,
57 struct intel_ring_buffer *ring,
58 struct drm_file *file_priv,
59 u32 flush_domains);
60 u32 (*get_gem_seqno)(struct drm_device *dev,
61 struct intel_ring_buffer *ring);
62 int (*dispatch_gem_execbuffer)(struct drm_device *dev,
63 struct intel_ring_buffer *ring,
64 struct drm_i915_gem_execbuffer2 *exec,
65 struct drm_clip_rect *cliprects,
66 uint64_t exec_offset);
67
68 /**
69 * List of objects currently involved in rendering from the
70 * ringbuffer.
71 *
72 * Includes buffers having the contents of their GPU caches
73 * flushed, not necessarily primitives. last_rendering_seqno
74 * represents when the rendering involved will be completed.
75 *
76 * A reference is held on the buffer while on this list.
77 */
78 struct list_head active_list;
79
80 /**
81 * List of breadcrumbs associated with GPU requests currently
82 * outstanding.
83 */
84 struct list_head request_list;
85
Daniel Vettera6910432010-02-02 17:08:37 +0100[diff] [blame^]86 /**
87 * Do we have some not yet emitted requests outstanding?
88 */
89 bool outstanding_lazy_request;
90
Zou Nan hai8187a2b2010-05-21 09:08:55 +0800[diff] [blame]91 wait_queue_head_t irq_queue;
92 drm_local_map_t map;
93};
94
95static inline u32
96intel_read_status_page(struct intel_ring_buffer *ring,
97 int reg)
98{
99 u32 *regs = ring->status_page.page_addr;
100 return regs[reg];
101}
102
103int intel_init_ring_buffer(struct drm_device *dev,
104 struct intel_ring_buffer *ring);
105void intel_cleanup_ring_buffer(struct drm_device *dev,
106 struct intel_ring_buffer *ring);
107int intel_wait_ring_buffer(struct drm_device *dev,
108 struct intel_ring_buffer *ring, int n);
109int intel_wrap_ring_buffer(struct drm_device *dev,
110 struct intel_ring_buffer *ring);
111void intel_ring_begin(struct drm_device *dev,
112 struct intel_ring_buffer *ring, int n);
Chris Wilsone898cd22010-08-04 15:18:14 +0100[diff] [blame]113
114static inline void intel_ring_emit(struct drm_device *dev,
115 struct intel_ring_buffer *ring,
116 unsigned int data)
117{
118 unsigned int *virt = ring->virtual_start + ring->tail;
119 *virt = data;
120 ring->tail += 4;
121}
122
Zou Nan hai8187a2b2010-05-21 09:08:55 +0800[diff] [blame]123void intel_fill_struct(struct drm_device *dev,
124 struct intel_ring_buffer *ring,
125 void *data,
126 unsigned int len);
127void intel_ring_advance(struct drm_device *dev,
128 struct intel_ring_buffer *ring);
129
130u32 intel_ring_get_seqno(struct drm_device *dev,
131 struct intel_ring_buffer *ring);
132
133extern struct intel_ring_buffer render_ring;
134extern struct intel_ring_buffer bsd_ring;
135
136#endif /* _INTEL_RINGBUFFER_H_ */