src/gallium/winsys/r600/drm/radeon_bo_pb.c

   1 #include "radeon_priv.h"
   2
   3 #include "util/u_inlines.h"
   4 #include "util/u_memory.h"
   5 #include "util/u_double_list.h"
   6 #include "pipebuffer/pb_buffer.h"
   7 #include "pipebuffer/pb_bufmgr.h"
   8
   9 struct radeon_bo_pb {
  10         struct pb_buffer b;
  11         struct radeon_bo *bo;
  12
  13         struct radeon_bo_pbmgr *mgr;
  14         struct list_head maplist;
  15 };
  16
  17 extern const struct pb_vtbl radeon_bo_pb_vtbl;
  18
  19 static INLINE struct radeon_bo_pb *radeon_bo_pb(struct pb_buffer *buf)
  20 {
  21         assert(buf);
  22         assert(buf->vtbl == &radeon_bo_pb_vtbl);
  23         return (struct radeon_bo_pb *)buf;
  24 }
  25
  26 struct radeon_bo_pbmgr {
  27         struct pb_manager b;
  28         struct radeon *radeon;
  29         struct list_head buffer_map_list;
  30 };
  31
  32 static INLINE struct radeon_bo_pbmgr *radeon_bo_pbmgr(struct pb_manager *mgr)
  33 {
  34         assert(mgr);
  35         return (struct radeon_bo_pbmgr *)mgr;
  36 }
  37
  38 static void radeon_bo_pb_destroy(struct pb_buffer *_buf)
  39 {
  40         struct radeon_bo_pb *buf = radeon_bo_pb(_buf);
  41
  42         LIST_DEL(&buf->maplist);
  43
  44         if (buf->bo->data != NULL) {
  45                 radeon_bo_unmap(buf->mgr->radeon, buf->bo);
  46         }
  47         radeon_bo_reference(buf->mgr->radeon, &buf->bo, NULL);
  48         FREE(buf);
  49 }
  50
  51 static void *
  52 radeon_bo_pb_map_internal(struct pb_buffer *_buf,
  53                           unsigned flags, void *ctx)
  54 {
  55         struct radeon_bo_pb *buf = radeon_bo_pb(_buf);
  56         struct pipe_context *pctx = ctx;
  57
  58         if (flags & PB_USAGE_UNSYNCHRONIZED) {
  59                 if (!buf->bo->data && radeon_bo_map(buf->mgr->radeon, buf->bo)) {
  60                         return NULL;
  61                 }
  62                 LIST_DELINIT(&buf->maplist);
  63                 return buf->bo->data;
  64         }
  65
  66         if (p_atomic_read(&buf->bo->reference.count) > 1) {
  67                 if (flags & PB_USAGE_DONTBLOCK) {
  68                         return NULL;
  69                 }
  70                 if (ctx) {
  71                         pctx->flush(pctx, 0, NULL);
  72                 }
  73         }
  74
  75         if (flags & PB_USAGE_DONTBLOCK) {
  76                 uint32_t domain;
  77                 if (radeon_bo_busy(buf->mgr->radeon, buf->bo, &domain))
  78                         return NULL;
  79         }
  80
  81         if (buf->bo->data != NULL) {
  82                 if (radeon_bo_wait(buf->mgr->radeon, buf->bo)) {
  83                         return NULL;
  84                 }
  85         } else {
  86                 if (radeon_bo_map(buf->mgr->radeon, buf->bo)) {
  87                         return NULL;
  88                 }
  89                 if (radeon_bo_wait(buf->mgr->radeon, buf->bo)) {
  90                         radeon_bo_unmap(buf->mgr->radeon, buf->bo);
  91                         return NULL;
  92                 }
  93         }
  94
  95         LIST_DELINIT(&buf->maplist);
  96         return buf->bo->data;
  97 }
  98
  99 static void radeon_bo_pb_unmap_internal(struct pb_buffer *_buf)
 100 {
 101         struct radeon_bo_pb *buf = radeon_bo_pb(_buf);
 102         LIST_ADDTAIL(&buf->maplist, &buf->mgr->buffer_map_list);
 103 }
 104
 105 static void
 106 radeon_bo_pb_get_base_buffer(struct pb_buffer *buf,
 107                              struct pb_buffer **base_buf,
 108                              unsigned *offset)
 109 {
 110         *base_buf = buf;
 111         *offset = 0;
 112 }
 113
 114 static enum pipe_error
 115 radeon_bo_pb_validate(struct pb_buffer *_buf,
 116                       struct pb_validate *vl,
 117                       unsigned flags)
 118 {
 119         /* Always pinned */
 120         return PIPE_OK;
 121 }
 122
 123 static void
 124 radeon_bo_pb_fence(struct pb_buffer *buf,
 125                    struct pipe_fence_handle *fence)
 126 {
 127 }
 128
 129 const struct pb_vtbl radeon_bo_pb_vtbl = {
 130     radeon_bo_pb_destroy,
 131     radeon_bo_pb_map_internal,
 132     radeon_bo_pb_unmap_internal,
 133     radeon_bo_pb_validate,
 134     radeon_bo_pb_fence,
 135     radeon_bo_pb_get_base_buffer,
 136 };
 137
 138 struct pb_buffer *
 139 radeon_bo_pb_create_buffer_from_handle(struct pb_manager *_mgr,
 140                                        uint32_t handle)
 141 {
 142         struct radeon_bo_pbmgr *mgr = radeon_bo_pbmgr(_mgr);
 143         struct radeon *radeon = mgr->radeon;
 144         struct radeon_bo_pb *bo;
 145         struct radeon_bo *hw_bo;
 146
 147         hw_bo = radeon_bo(radeon, handle, 0, 0, NULL);
 148         if (hw_bo == NULL)
 149                 return NULL;
 150
 151         bo = CALLOC_STRUCT(radeon_bo_pb);
 152         if (!bo) {
 153                 radeon_bo_reference(radeon, &hw_bo, NULL);
 154                 return NULL;
 155         }
 156
 157         LIST_INITHEAD(&bo->maplist);
 158         pipe_reference_init(&bo->b.base.reference, 1);
 159         bo->b.base.alignment = 0;
 160         bo->b.base.usage = PB_USAGE_GPU_WRITE | PB_USAGE_GPU_READ;
 161         bo->b.base.size = hw_bo->size;
 162         bo->b.vtbl = &radeon_bo_pb_vtbl;
 163         bo->mgr = mgr;
 164
 165         bo->bo = hw_bo;
 166
 167         return &bo->b;
 168 }
 169
 170 static struct pb_buffer *
 171 radeon_bo_pb_create_buffer(struct pb_manager *_mgr,
 172                            pb_size size,
 173                            const struct pb_desc *desc)
 174 {
 175         struct radeon_bo_pbmgr *mgr = radeon_bo_pbmgr(_mgr);
 176         struct radeon *radeon = mgr->radeon;
 177         struct radeon_bo_pb *bo;
 178
 179         bo = CALLOC_STRUCT(radeon_bo_pb);
 180         if (!bo)
 181                 goto error1;
 182
 183         pipe_reference_init(&bo->b.base.reference, 1);
 184         bo->b.base.alignment = desc->alignment;
 185         bo->b.base.usage = desc->usage;
 186         bo->b.base.size = size;
 187         bo->b.vtbl = &radeon_bo_pb_vtbl;
 188         bo->mgr = mgr;
 189
 190         LIST_INITHEAD(&bo->maplist);
 191
 192         bo->bo = radeon_bo(radeon, 0, size,
 193                            desc->alignment, NULL);
 194         if (bo->bo == NULL)
 195                 goto error2;
 196         return &bo->b;
 197
 198 error2:
 199         FREE(bo);
 200 error1:
 201         return NULL;
 202 }
 203
 204 static void
 205 radeon_bo_pbmgr_flush(struct pb_manager *mgr)
 206 {
 207     /* NOP */
 208 }
 209
 210 static void
 211 radeon_bo_pbmgr_destroy(struct pb_manager *_mgr)
 212 {
 213         struct radeon_bo_pbmgr *mgr = radeon_bo_pbmgr(_mgr);
 214         FREE(mgr);
 215 }
 216
 217 struct pb_manager *radeon_bo_pbmgr_create(struct radeon *radeon)
 218 {
 219         struct radeon_bo_pbmgr *mgr;
 220
 221         mgr = CALLOC_STRUCT(radeon_bo_pbmgr);
 222         if (!mgr)
 223                 return NULL;
 224
 225         mgr->b.destroy = radeon_bo_pbmgr_destroy;
 226         mgr->b.create_buffer = radeon_bo_pb_create_buffer;
 227         mgr->b.flush = radeon_bo_pbmgr_flush;
 228
 229         mgr->radeon = radeon;
 230         LIST_INITHEAD(&mgr->buffer_map_list);
 231         return &mgr->b;
 232 }
 233
 234 void radeon_bo_pbmgr_flush_maps(struct pb_manager *_mgr)
 235 {
 236         struct radeon_bo_pbmgr *mgr = radeon_bo_pbmgr(_mgr);
 237         struct radeon_bo_pb *rpb = NULL;
 238         struct radeon_bo_pb *t_rpb;
 239
 240         LIST_FOR_EACH_ENTRY_SAFE(rpb, t_rpb, &mgr->buffer_map_list, maplist) {
 241                 radeon_bo_unmap(mgr->radeon, rpb->bo);
 242                 LIST_DELINIT(&rpb->maplist);
 243         }
 244
 245         LIST_INITHEAD(&mgr->buffer_map_list);
 246 }
 247
 248 struct radeon_bo *radeon_bo_pb_get_bo(struct pb_buffer *_buf)
 249 {
 250         struct radeon_bo_pb *buf;
 251         if (_buf->vtbl == &radeon_bo_pb_vtbl) {
 252                 buf = radeon_bo_pb(_buf);
 253                 return buf->bo;
 254         } else {
 255                 struct pb_buffer *base_buf;
 256                 pb_size offset;
 257                 pb_get_base_buffer(_buf, &base_buf, &offset);
 258                 if (base_buf->vtbl == &radeon_bo_pb_vtbl) {
 259                         buf = radeon_bo_pb(base_buf);
 260                         return buf->bo;
 261                 }
 262         }
 263         return NULL;
 264 }