src/gallium/drivers/nouveau/nouveau_context.h

   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
   9 struct 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    /* @return: @ref reduced by nr of references found in context */
  32    int (*invalidate_resource_storage)(struct nouveau_context *,
  33                                       struct pipe_resource *,
  34                                       int ref);
  35
  36    struct {
  37       uint8_t *map;
  38       unsigned id;
  39       unsigned wrap;
  40       unsigned offset;
  41       unsigned end;
  42       struct nouveau_bo *bo[NOUVEAU_MAX_SCRATCH_BUFS];
  43       struct nouveau_bo *current;
  44       struct nouveau_bo **runout;
  45       unsigned nr_runout;
  46       unsigned bo_size;
  47    } scratch;
  48
  49    struct {
  50       uint32_t buf_cache_count;
  51       uint32_t buf_cache_frame;
  52    } stats;
  53 };
  54
  55 static INLINE struct nouveau_context *
  56 nouveau_context(struct pipe_context *pipe)
  57 {
  58    return (struct nouveau_context *)pipe;
  59 }
  60
  61 void
  62 nouveau_context_init_vdec(struct nouveau_context *);
  63
  64 void
  65 nouveau_scratch_runout_release(struct nouveau_context *);
  66
  67 /* This is needed because we don't hold references outside of context::scratch,
  68  * because we don't want to un-bo_ref each allocation every time. This is less
  69  * work, and we need the wrap index anyway for extreme situations.
  70  */
  71 static INLINE void
  72 nouveau_scratch_done(struct nouveau_context *nv)
  73 {
  74    nv->scratch.wrap = nv->scratch.id;
  75    if (unlikely(nv->scratch.nr_runout))
  76       nouveau_scratch_runout_release(nv);
  77 }
  78
  79 /* Get pointer to scratch buffer.
  80  * The returned nouveau_bo is only referenced by the context, don't un-ref it !
  81  */
  82 void *
  83 nouveau_scratch_get(struct nouveau_context *, unsigned size, uint64_t *gpu_addr,
  84                     struct nouveau_bo **);
  85
  86 static INLINE void
  87 nouveau_context_destroy(struct nouveau_context *ctx)
  88 {
  89    int i;
  90
  91    for (i = 0; i < NOUVEAU_MAX_SCRATCH_BUFS; ++i)
  92       if (ctx->scratch.bo[i])
  93          nouveau_bo_ref(NULL, &ctx->scratch.bo[i]);
  94
  95    FREE(ctx);
  96 }
  97
  98 static INLINE  void
  99 nouveau_context_update_frame_stats(struct nouveau_context *nv)
 100 {
 101    nv->stats.buf_cache_frame <<= 1;
 102    if (nv->stats.buf_cache_count) {
 103       nv->stats.buf_cache_count = 0;
 104       nv->stats.buf_cache_frame |= 1;
 105       if ((nv->stats.buf_cache_frame & 0xf) == 0xf)
 106          nv->screen->hint_buf_keep_sysmem_copy = TRUE;
 107    }
 108 }
 109
 110 #endif