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      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 
     10 struct nv04_resource;
     11 
     12 struct 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 pipe_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 
     59 static inline struct nouveau_context *
     60 nouveau_context(struct pipe_context *pipe)
     61 {
     62    return (struct nouveau_context *)pipe;
     63 }
     64 
     65 void
     66 nouveau_context_init_vdec(struct nouveau_context *);
     67 
     68 void
     69 nouveau_context_init(struct nouveau_context *);
     70 
     71 void
     72 nouveau_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  */
     78 static inline void
     79 nouveau_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  */
     89 void *
     90 nouveau_scratch_get(struct nouveau_context *, unsigned size, uint64_t *gpu_addr,
     91                     struct nouveau_bo **);
     92 
     93 static inline void
     94 nouveau_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 
    105 static inline  void
    106 nouveau_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