1#ifndef __NOUVEAU_CONTEXT_H__
2#define __NOUVEAU_CONTEXT_H__
3
4#include "pipe/p_context.h"
5#include <libdrm/nouveau.h>
6
7#define NOUVEAU_MAX_SCRATCH_BUFS 4
8
9struct nouveau_context {
10   struct pipe_context pipe;
11   struct nouveau_screen *screen;
12
13   struct nouveau_client *client;
14   struct nouveau_pushbuf *pushbuf;
15
16   boolean vbo_dirty;
17   boolean cb_dirty;
18
19   void (*copy_data)(struct nouveau_context *,
20                     struct nouveau_bo *dst, unsigned, unsigned,
21                     struct nouveau_bo *src, unsigned, unsigned, unsigned);
22   void (*push_data)(struct nouveau_context *,
23                     struct nouveau_bo *dst, unsigned, unsigned,
24                     unsigned, const void *);
25   /* base, size refer to the whole constant buffer */
26   void (*push_cb)(struct nouveau_context *,
27                   struct nouveau_bo *, unsigned domain,
28                   unsigned base, unsigned size,
29                   unsigned offset, unsigned words, const uint32_t *);
30
31   struct {
32      uint8_t *map;
33      unsigned id;
34      unsigned wrap;
35      unsigned offset;
36      unsigned end;
37      struct nouveau_bo *bo[NOUVEAU_MAX_SCRATCH_BUFS];
38      struct nouveau_bo *current;
39      struct nouveau_bo **runout;
40      unsigned nr_runout;
41      unsigned bo_size;
42   } scratch;
43};
44
45static INLINE struct nouveau_context *
46nouveau_context(struct pipe_context *pipe)
47{
48   return (struct nouveau_context *)pipe;
49}
50
51void
52nouveau_context_init_vdec(struct nouveau_context *);
53
54void
55nouveau_scratch_runout_release(struct nouveau_context *);
56
57/* This is needed because we don't hold references outside of context::scratch,
58 * because we don't want to un-bo_ref each allocation every time. This is less
59 * work, and we need the wrap index anyway for extreme situations.
60 */
61static INLINE void
62nouveau_scratch_done(struct nouveau_context *nv)
63{
64   nv->scratch.wrap = nv->scratch.id;
65   if (unlikely(nv->scratch.nr_runout))
66      nouveau_scratch_runout_release(nv);
67}
68
69/* Get pointer to scratch buffer.
70 * The returned nouveau_bo is only referenced by the context, don't un-ref it !
71 */
72void *
73nouveau_scratch_get(struct nouveau_context *, unsigned size, uint64_t *gpu_addr,
74                    struct nouveau_bo **);
75
76static INLINE void
77nouveau_context_destroy(struct nouveau_context *ctx)
78{
79   int i;
80
81   for (i = 0; i < NOUVEAU_MAX_SCRATCH_BUFS; ++i)
82      if (ctx->scratch.bo[i])
83         nouveau_bo_ref(NULL, &ctx->scratch.bo[i]);
84
85   FREE(ctx);
86}
87#endif
88