src/gallium/drivers/nouveau/nouveau_buffer.h

   1 #ifndef __NOUVEAU_BUFFER_H__
   2 #define __NOUVEAU_BUFFER_H__
   3
   4 #include "util/u_transfer.h"
   5 #include "util/u_double_list.h"
   6
   7 struct pipe_resource;
   8 struct nouveau_context;
   9 struct nouveau_bo;
  10
  11 /* DIRTY: buffer was (or will be after the next flush) written to by GPU and
  12  *  resource->data has not been updated to reflect modified VRAM contents
  13  *
  14  * USER_MEMORY: resource->data is a pointer to client memory and may change
  15  *  between GL calls
  16  */
  17 #define NOUVEAU_BUFFER_STATUS_GPU_READING (1 << 0)
  18 #define NOUVEAU_BUFFER_STATUS_GPU_WRITING (1 << 1)
  19 #define NOUVEAU_BUFFER_STATUS_USER_MEMORY (1 << 7)
  20
  21 /* Resources, if mapped into the GPU's address space, are guaranteed to
  22  * have constant virtual addresses (nv50+).
  23  *
  24  * The address of a resource will lie within the nouveau_bo referenced,
  25  * and this bo should be added to the memory manager's validation list.
  26  */
  27 struct nv04_resource {
  28    struct pipe_resource base;
  29    const struct u_resource_vtbl *vtbl;
  30
  31    uint64_t address; /* virtual address (nv50+) */
  32
  33    uint8_t *data;
  34    struct nouveau_bo *bo;
  35    uint32_t offset;
  36
  37    uint8_t status;
  38    uint8_t domain;
  39
  40    struct nouveau_fence *fence;
  41    struct nouveau_fence *fence_wr;
  42
  43    struct nouveau_mm_allocation *mm;
  44 };
  45
  46 void
  47 nouveau_buffer_release_gpu_storage(struct nv04_resource *);
  48
  49 boolean
  50 nouveau_buffer_download(struct nouveau_context *, struct nv04_resource *,
  51                         unsigned start, unsigned size);
  52
  53 boolean
  54 nouveau_buffer_migrate(struct nouveau_context *,
  55                        struct nv04_resource *, unsigned domain);
  56
  57 void *
  58 nouveau_resource_map_offset(struct nouveau_context *, struct nv04_resource *,
  59                             uint32_t offset, uint32_t flags);
  60
  61 static INLINE void
  62 nouveau_resource_unmap(struct nv04_resource *res)
  63 {
  64    /* no-op */
  65 }
  66
  67 static INLINE struct nv04_resource *
  68 nv04_resource(struct pipe_resource *resource)
  69 {
  70    return (struct nv04_resource *)resource;
  71 }
  72
  73 /* is resource mapped into the GPU's address space (i.e. VRAM or GART) ? */
  74 static INLINE boolean
  75 nouveau_resource_mapped_by_gpu(struct pipe_resource *resource)
  76 {
  77    return nv04_resource(resource)->domain != 0;
  78 }
  79
  80 struct pipe_resource *
  81 nouveau_buffer_create(struct pipe_screen *pscreen,
  82                       const struct pipe_resource *templ);
  83
  84 struct pipe_resource *
  85 nouveau_user_buffer_create(struct pipe_screen *screen, void *ptr,
  86                            unsigned bytes, unsigned usage);
  87
  88 boolean
  89 nouveau_user_buffer_upload(struct nouveau_context *, struct nv04_resource *,
  90                            unsigned base, unsigned size);
  91
  92 /* Copy data to a scratch buffer, update buffer address.
  93  * Returns the bo the data resides in, or NULL on failure.
  94  */
  95 struct nouveau_bo *
  96 nouveau_scratch_data(struct nouveau_context *,
  97                      struct nv04_resource *, unsigned base, unsigned size);
  98
  99 #endif