1#ifndef __NOUVEAU_CONTEXT_H__
2#define __NOUVEAU_CONTEXT_H__
3
4#include "pipe/p_context.h"
5#include "pipe/p_state.h"
6#include <nouveau.h>
7
8#define NOUVEAU_MAX_SCRATCH_BUFS 4
9
10struct nv04_resource;
11
12struct nouveau_context {
13   struct pipe_context pipe;
14   struct nouveau_screen *screen;
15
16   struct nouveau_client *client;
17   struct nouveau_pushbuf *pushbuf;
18   struct util_debug_callback debug;
19
20   bool vbo_dirty;
21
22   void (*copy_data)(struct nouveau_context *,
23                     struct nouveau_bo *dst, unsigned, unsigned,
24                     struct nouveau_bo *src, unsigned, unsigned, unsigned);
25   void (*push_data)(struct nouveau_context *,
26                     struct nouveau_bo *dst, unsigned, unsigned,
27                     unsigned, const void *);
28   /* base, size refer to the whole constant buffer */
29   void (*push_cb)(struct nouveau_context *,
30                   struct nv04_resource *,
31                   unsigned offset, unsigned words, const uint32_t *);
32
33   /* @return: @ref reduced by nr of references found in context */
34   int (*invalidate_resource_storage)(struct nouveau_context *,
35                                      struct pipe_resource *,
36                                      int ref);
37
38   struct {
39      uint8_t *map;
40      unsigned id;
41      unsigned wrap;
42      unsigned offset;
43      unsigned end;
44      struct nouveau_bo *bo[NOUVEAU_MAX_SCRATCH_BUFS];
45      struct nouveau_bo *current;
46      struct runout {
47         unsigned nr;
48         struct nouveau_bo *bo[0];
49      } *runout;
50      unsigned bo_size;
51   } scratch;
52
53   struct {
54      uint32_t buf_cache_count;
55      uint32_t buf_cache_frame;
56   } stats;
57};
58
59static inline struct nouveau_context *
60nouveau_context(struct pipe_context *pipe)
61{
62   return (struct nouveau_context *)pipe;
63}
64
65void
66nouveau_context_init_vdec(struct nouveau_context *);
67
68void
69nouveau_context_init(struct nouveau_context *);
70
71void
72nouveau_scratch_runout_release(struct nouveau_context *);
73
74/* This is needed because we don't hold references outside of context::scratch,
75 * because we don't want to un-bo_ref each allocation every time. This is less
76 * work, and we need the wrap index anyway for extreme situations.
77 */
78static inline void
79nouveau_scratch_done(struct nouveau_context *nv)
80{
81   nv->scratch.wrap = nv->scratch.id;
82   if (unlikely(nv->scratch.runout))
83      nouveau_scratch_runout_release(nv);
84}
85
86/* Get pointer to scratch buffer.
87 * The returned nouveau_bo is only referenced by the context, don't un-ref it !
88 */
89void *
90nouveau_scratch_get(struct nouveau_context *, unsigned size, uint64_t *gpu_addr,
91                    struct nouveau_bo **);
92
93static inline void
94nouveau_context_destroy(struct nouveau_context *ctx)
95{
96   int i;
97
98   for (i = 0; i < NOUVEAU_MAX_SCRATCH_BUFS; ++i)
99      if (ctx->scratch.bo[i])
100         nouveau_bo_ref(NULL, &ctx->scratch.bo[i]);
101
102   FREE(ctx);
103}
104
105static inline  void
106nouveau_context_update_frame_stats(struct nouveau_context *nv)
107{
108   nv->stats.buf_cache_frame <<= 1;
109   if (nv->stats.buf_cache_count) {
110      nv->stats.buf_cache_count = 0;
111      nv->stats.buf_cache_frame |= 1;
112      if ((nv->stats.buf_cache_frame & 0xf) == 0xf)
113         nv->screen->hint_buf_keep_sysmem_copy = true;
114   }
115}
116
117#endif
118