src/gallium/drivers/nouveau/nouveau_screen.c

   1 #include "pipe/p_defines.h"
   2 #include "pipe/p_screen.h"
   3 #include "pipe/p_state.h"
   4
   5 #include "util/u_memory.h"
   6 #include "util/u_inlines.h"
   7 #include "util/u_format.h"
   8
   9 #include <stdio.h>
  10 #include <errno.h>
  11
  12 #include "nouveau/nouveau_bo.h"
  13 #include "nouveau_winsys.h"
  14 #include "nouveau_screen.h"
  15
  16 /* XXX this should go away */
  17 #include "state_tracker/drm_api.h"
  18
  19 static const char *
  20 nouveau_screen_get_name(struct pipe_screen *pscreen)
  21 {
  22         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
  23         static char buffer[128];
  24
  25         snprintf(buffer, sizeof(buffer), "NV%02X", dev->chipset);
  26         return buffer;
  27 }
  28
  29 static const char *
  30 nouveau_screen_get_vendor(struct pipe_screen *pscreen)
  31 {
  32         return "nouveau";
  33 }
  34
  35 static struct pipe_buffer *
  36 nouveau_screen_bo_skel(struct pipe_screen *pscreen, struct nouveau_bo *bo,
  37                        unsigned alignment, unsigned usage, unsigned size)
  38 {
  39         struct pipe_buffer *pb;
  40
  41         pb = CALLOC(1, sizeof(struct pipe_buffer)+sizeof(struct nouveau_bo *));
  42         if (!pb) {
  43                 nouveau_bo_ref(NULL, &bo);
  44                 return NULL;
  45         }
  46
  47         pipe_reference_init(&pb->reference, 1);
  48         pb->screen = pscreen;
  49         pb->alignment = alignment;
  50         pb->usage = usage;
  51         pb->size = size;
  52         *(struct nouveau_bo **)(pb + 1) = bo;
  53         return pb;
  54 }
  55
  56 static struct pipe_buffer *
  57 nouveau_screen_bo_new(struct pipe_screen *pscreen, unsigned alignment,
  58                       unsigned usage, unsigned size)
  59 {
  60         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
  61         struct nouveau_bo *bo = NULL;
  62         uint32_t flags = NOUVEAU_BO_MAP, tile_mode = 0, tile_flags = 0;
  63         int ret;
  64
  65         if (usage & NOUVEAU_BUFFER_USAGE_TRANSFER)
  66                 flags |= NOUVEAU_BO_GART;
  67         else
  68         if (usage & PIPE_BUFFER_USAGE_VERTEX) {
  69                 if (pscreen->get_param(pscreen, NOUVEAU_CAP_HW_VTXBUF))
  70                         flags |= NOUVEAU_BO_GART;
  71         } else
  72         if (usage & PIPE_BUFFER_USAGE_INDEX) {
  73                 if (pscreen->get_param(pscreen, NOUVEAU_CAP_HW_IDXBUF))
  74                         flags |= NOUVEAU_BO_GART;
  75         }
  76
  77         if (usage & PIPE_BUFFER_USAGE_PIXEL) {
  78                 if (usage & NOUVEAU_BUFFER_USAGE_TEXTURE)
  79                         flags |= NOUVEAU_BO_GART;
  80                 if (!(usage & PIPE_BUFFER_USAGE_CPU_READ_WRITE))
  81                         flags |= NOUVEAU_BO_VRAM;
  82
  83                 if (dev->chipset == 0x50 || dev->chipset >= 0x80) {
  84                         if (usage & NOUVEAU_BUFFER_USAGE_ZETA)
  85                                 tile_flags = 0x2800;
  86                         else
  87                                 tile_flags = 0x7000;
  88                 }
  89         }
  90
  91         ret = nouveau_bo_new_tile(dev, flags, alignment, size,
  92                                   tile_mode, tile_flags, &bo);
  93         if (ret)
  94                 return NULL;
  95
  96         return nouveau_screen_bo_skel(pscreen, bo, alignment, usage, size);
  97 }
  98
  99 static struct pipe_buffer *
 100 nouveau_screen_bo_user(struct pipe_screen *pscreen, void *ptr, unsigned bytes)
 101 {
 102         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 103         struct nouveau_bo *bo = NULL;
 104         int ret;
 105
 106         ret = nouveau_bo_user(dev, ptr, bytes, &bo);
 107         if (ret)
 108                 return NULL;
 109
 110         return nouveau_screen_bo_skel(pscreen, bo, 0, 0, bytes);
 111 }
 112
 113 static inline uint32_t
 114 nouveau_screen_map_flags(unsigned pipe)
 115 {
 116         uint32_t flags = 0;
 117
 118         if (pipe & PIPE_BUFFER_USAGE_CPU_READ)
 119                 flags |= NOUVEAU_BO_RD;
 120         if (pipe & PIPE_BUFFER_USAGE_CPU_WRITE)
 121                 flags |= NOUVEAU_BO_WR;
 122         if (pipe & PIPE_BUFFER_USAGE_DISCARD)
 123                 flags |= NOUVEAU_BO_INVAL;
 124         if (pipe & PIPE_BUFFER_USAGE_DONTBLOCK)
 125                 flags |= NOUVEAU_BO_NOWAIT;
 126         else
 127         if (pipe & PIPE_BUFFER_USAGE_UNSYNCHRONIZED)
 128                 flags |= NOUVEAU_BO_NOSYNC;
 129
 130         return flags;
 131 }
 132
 133 static void *
 134 nouveau_screen_bo_map(struct pipe_screen *pscreen, struct pipe_buffer *pb,
 135                       unsigned usage)
 136 {
 137         struct nouveau_bo *bo = nouveau_bo(pb);
 138         struct nouveau_screen *nscreen = nouveau_screen(pscreen);
 139         int ret;
 140
 141         if (nscreen->pre_pipebuffer_map_callback) {
 142                 ret = nscreen->pre_pipebuffer_map_callback(pscreen, pb, usage);
 143                 if (ret) {
 144                         debug_printf("pre_pipebuffer_map_callback failed %d\n",
 145                                 ret);
 146                         return NULL;
 147                 }
 148         }
 149
 150         ret = nouveau_bo_map(bo, nouveau_screen_map_flags(usage));
 151         if (ret) {
 152                 debug_printf("map failed: %d\n", ret);
 153                 return NULL;
 154         }
 155
 156         return bo->map;
 157 }
 158
 159 static void *
 160 nouveau_screen_bo_map_range(struct pipe_screen *pscreen, struct pipe_buffer *pb,
 161                             unsigned offset, unsigned length, unsigned usage)
 162 {
 163         struct nouveau_bo *bo = nouveau_bo(pb);
 164         struct nouveau_screen *nscreen = nouveau_screen(pscreen);
 165         uint32_t flags = nouveau_screen_map_flags(usage);
 166         int ret;
 167
 168         if (nscreen->pre_pipebuffer_map_callback) {
 169                 ret = nscreen->pre_pipebuffer_map_callback(pscreen, pb, usage);
 170                 if (ret) {
 171                         debug_printf("pre_pipebuffer_map_callback failed %d\n",
 172                                 ret);
 173                         return NULL;
 174                 }
 175         }
 176
 177         ret = nouveau_bo_map_range(bo, offset, length, flags);
 178         if (ret) {
 179                 nouveau_bo_unmap(bo);
 180                 if (!(flags & NOUVEAU_BO_NOWAIT) || ret != -EBUSY)
 181                         debug_printf("map_range failed: %d\n", ret);
 182                 return NULL;
 183         }
 184
 185         return (char *)bo->map - offset; /* why gallium? why? */
 186 }
 187
 188 static void
 189 nouveau_screen_bo_map_flush(struct pipe_screen *pscreen, struct pipe_buffer *pb,
 190                             unsigned offset, unsigned length)
 191 {
 192         struct nouveau_bo *bo = nouveau_bo(pb);
 193
 194         nouveau_bo_map_flush(bo, offset, length);
 195 }
 196
 197 static void
 198 nouveau_screen_bo_unmap(struct pipe_screen *pscreen, struct pipe_buffer *pb)
 199 {
 200         struct nouveau_bo *bo = nouveau_bo(pb);
 201
 202         nouveau_bo_unmap(bo);
 203 }
 204
 205 static void
 206 nouveau_screen_bo_del(struct pipe_buffer *pb)
 207 {
 208         struct nouveau_bo *bo = nouveau_bo(pb);
 209
 210         nouveau_bo_ref(NULL, &bo);
 211         FREE(pb);
 212 }
 213
 214 static void
 215 nouveau_screen_fence_ref(struct pipe_screen *pscreen,
 216                          struct pipe_fence_handle **ptr,
 217                          struct pipe_fence_handle *pfence)
 218 {
 219         *ptr = pfence;
 220 }
 221
 222 static int
 223 nouveau_screen_fence_signalled(struct pipe_screen *screen,
 224                                struct pipe_fence_handle *pfence,
 225                                unsigned flags)
 226 {
 227         return 0;
 228 }
 229
 230 static int
 231 nouveau_screen_fence_finish(struct pipe_screen *screen,
 232                             struct pipe_fence_handle *pfence,
 233                             unsigned flags)
 234 {
 235         return 0;
 236 }
 237
 238
 239 /*
 240  * Both texture_{from|get}_handle use drm api defines directly which they
 241  * shouldn't do. The problem is that from|get are pipe functions and as
 242  * such they should be defined in the pipe level. If nouveau had a propper
 243  * winsys interface we would have added from|get to that interface using
 244  * the winsys_handle struct as done with other drivers. However this code
 245  * calls directly into the libdrm_nouveau.so functions (nouveau_bo_*). So
 246  * we need to translate the handle into something they understand.
 247  */
 248 static struct pipe_texture *
 249 nouveau_screen_texture_from_handle(struct pipe_screen *pscreen,
 250                                    const struct pipe_texture *templ,
 251                                    struct winsys_handle *whandle)
 252 {
 253         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 254         struct pipe_texture *pt;
 255         struct pipe_buffer *pb;
 256         int ret;
 257
 258         pb = CALLOC(1, sizeof(struct pipe_buffer) + sizeof(struct nouveau_bo*));
 259         if (!pb)
 260                 return NULL;
 261
 262         ret = nouveau_bo_handle_ref(dev, whandle->handle, (struct nouveau_bo**)(pb+1));
 263         if (ret) {
 264                 debug_printf("%s: ref name 0x%08x failed with %d\n",
 265                              __func__, whandle->handle, ret);
 266                 FREE(pb);
 267                 return NULL;
 268         }
 269
 270         pipe_reference_init(&pb->reference, 1);
 271         pb->screen = pscreen;
 272         pb->alignment = 0;
 273         pb->usage = PIPE_BUFFER_USAGE_GPU_READ_WRITE |
 274                     PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 275         pb->size = nouveau_bo(pb)->size;
 276         pt = nouveau_screen(pscreen)->texture_blanket(pscreen, templ,
 277                                                       &whandle->stride, pb);
 278         pipe_buffer_reference(&pb, NULL);
 279         return pt;
 280 }
 281
 282 static boolean
 283 nouveau_screen_texture_get_handle(struct pipe_screen *pscreen,
 284                                   struct pipe_texture *pt,
 285                                   struct winsys_handle *whandle)
 286 {
 287         struct nouveau_miptree *mt = nouveau_miptree(pt);
 288
 289         if (!mt || !mt->bo)
 290                 return false;
 291
 292         whandle->stride = util_format_get_stride(mt->base.format, mt->base.width0);
 293
 294         if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
 295                 return nouveau_bo_handle_get(mt->bo, &whandle->handle) == 0;
 296         } else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
 297                 whandle->handle = mt->bo->handle;
 298                 return TRUE;
 299         } else {
 300                 return FALSE;
 301         }
 302 }
 303
 304 int
 305 nouveau_screen_init(struct nouveau_screen *screen, struct nouveau_device *dev)
 306 {
 307         struct pipe_screen *pscreen = &screen->base;
 308         int ret;
 309
 310         ret = nouveau_channel_alloc(dev, 0xbeef0201, 0xbeef0202,
 311                                     &screen->channel);
 312         if (ret)
 313                 return ret;
 314         screen->device = dev;
 315
 316         pscreen->get_name = nouveau_screen_get_name;
 317         pscreen->get_vendor = nouveau_screen_get_vendor;
 318
 319         pscreen->buffer_create = nouveau_screen_bo_new;
 320         pscreen->user_buffer_create = nouveau_screen_bo_user;
 321         pscreen->buffer_map = nouveau_screen_bo_map;
 322         pscreen->buffer_map_range = nouveau_screen_bo_map_range;
 323         pscreen->buffer_flush_mapped_range = nouveau_screen_bo_map_flush;
 324         pscreen->buffer_unmap = nouveau_screen_bo_unmap;
 325         pscreen->buffer_destroy = nouveau_screen_bo_del;
 326
 327         pscreen->fence_reference = nouveau_screen_fence_ref;
 328         pscreen->fence_signalled = nouveau_screen_fence_signalled;
 329         pscreen->fence_finish = nouveau_screen_fence_finish;
 330
 331         pscreen->texture_from_handle = nouveau_screen_texture_from_handle;
 332         pscreen->texture_get_handle = nouveau_screen_texture_get_handle;
 333
 334         return 0;
 335 }
 336
 337 void
 338 nouveau_screen_fini(struct nouveau_screen *screen)
 339 {
 340         struct pipe_winsys *ws = screen->base.winsys;
 341         nouveau_channel_free(&screen->channel);
 342         ws->destroy(ws);
 343 }
 344