src/gallium/drivers/r600/r600_buffer.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Jerome Glisse
  25  *      Corbin Simpson <MostAwesomeDude@gmail.com>
  26  */
  27 #include <pipe/p_screen.h>
  28 #include <util/u_format.h>
  29 #include <util/u_math.h>
  30 #include <util/u_inlines.h>
  31 #include <util/u_memory.h>
  32 #include "state_tracker/drm_api.h"
  33 #include "r600_screen.h"
  34 #include "r600_context.h"
  35
  36 extern struct u_resource_vtbl r600_buffer_vtbl;
  37
  38 static u32 r600_domain_from_usage(unsigned usage)
  39 {
  40         u32 domain = RADEON_GEM_DOMAIN_GTT;
  41
  42         if (usage & PIPE_BIND_RENDER_TARGET) {
  43             domain |= RADEON_GEM_DOMAIN_VRAM;
  44         }
  45         if (usage & PIPE_BIND_DEPTH_STENCIL) {
  46             domain |= RADEON_GEM_DOMAIN_VRAM;
  47         }
  48         if (usage & PIPE_BIND_SAMPLER_VIEW) {
  49             domain |= RADEON_GEM_DOMAIN_VRAM;
  50         }
  51         /* also need BIND_BLIT_SOURCE/DESTINATION ? */
  52         if (usage & PIPE_BIND_VERTEX_BUFFER) {
  53             domain |= RADEON_GEM_DOMAIN_GTT;
  54         }
  55         if (usage & PIPE_BIND_INDEX_BUFFER) {
  56             domain |= RADEON_GEM_DOMAIN_GTT;
  57         }
  58
  59         return domain;
  60 }
  61
  62 struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
  63                                          const struct pipe_resource *templ)
  64 {
  65         struct r600_screen *rscreen = r600_screen(screen);
  66         struct r600_buffer *rbuffer;
  67         struct radeon_bo *bo;
  68         struct pb_desc desc;
  69         /* XXX We probably want a different alignment for buffers and textures. */
  70         unsigned alignment = 4096;
  71
  72         rbuffer = CALLOC_STRUCT(r600_buffer);
  73         if (rbuffer == NULL)
  74                 return NULL;
  75
  76         rbuffer->b.b = *templ;
  77         pipe_reference_init(&rbuffer->b.b.reference, 1);
  78         rbuffer->b.b.screen = screen;
  79         rbuffer->b.vtbl = &r600_buffer_vtbl;
  80
  81         if (rbuffer->b.b.bind & PIPE_BIND_CONSTANT_BUFFER) {
  82                 desc.alignment = alignment;
  83                 desc.usage = rbuffer->b.b.bind;
  84                 rbuffer->pb = pb_malloc_buffer_create(rbuffer->b.b.width0,
  85                                                       &desc);
  86                 if (rbuffer->pb == NULL) {
  87                         free(rbuffer);
  88                         return NULL;
  89                 }
  90                 return &rbuffer->b.b;
  91         }
  92         rbuffer->domain = r600_domain_from_usage(rbuffer->b.b.bind);
  93         bo = radeon_bo(rscreen->rw, 0, rbuffer->b.b.width0, alignment, NULL);
  94         if (bo == NULL) {
  95                 FREE(rbuffer);
  96                 return NULL;
  97         }
  98         rbuffer->bo = bo;
  99         return &rbuffer->b.b;
 100 }
 101
 102 struct pipe_resource *r600_user_buffer_create(struct pipe_screen *screen,
 103                                               void *ptr, unsigned bytes,
 104                                               unsigned bind)
 105 {
 106         struct r600_buffer *rbuffer;
 107         struct r600_screen *rscreen = r600_screen(screen);
 108         struct pipe_resource templ;
 109
 110         memset(&templ, 0, sizeof(struct pipe_resource));
 111         templ.target = PIPE_BUFFER;
 112         templ.format = PIPE_FORMAT_R8_UNORM;
 113         templ.usage = PIPE_USAGE_IMMUTABLE;
 114         templ.bind = bind;
 115         templ.width0 = bytes;
 116         templ.height0 = 1;
 117         templ.depth0 = 1;
 118
 119         rbuffer = (struct r600_buffer*)r600_buffer_create(screen, &templ);
 120         if (rbuffer == NULL) {
 121                 return NULL;
 122         }
 123         radeon_bo_map(rscreen->rw, rbuffer->bo);
 124         memcpy(rbuffer->bo->data, ptr, bytes);
 125         radeon_bo_unmap(rscreen->rw, rbuffer->bo);
 126         return &rbuffer->b.b;
 127 }
 128
 129 static void r600_buffer_destroy(struct pipe_screen *screen,
 130                                 struct pipe_resource *buf)
 131 {
 132         struct r600_buffer *rbuffer = (struct r600_buffer*)buf;
 133         struct r600_screen *rscreen = r600_screen(screen);
 134
 135         if (rbuffer->pb) {
 136                 pipe_reference_init(&rbuffer->pb->base.reference, 0);
 137                 pb_destroy(rbuffer->pb);
 138                 rbuffer->pb = NULL;
 139         }
 140         if (rbuffer->bo) {
 141                 radeon_bo_decref(rscreen->rw, rbuffer->bo);
 142         }
 143         FREE(rbuffer);
 144 }
 145
 146 static void *r600_buffer_transfer_map(struct pipe_context *pipe,
 147                                       struct pipe_transfer *transfer)
 148 {
 149         struct r600_buffer *rbuffer = (struct r600_buffer*)transfer->resource;
 150         struct r600_screen *rscreen = r600_screen(pipe->screen);
 151         int write = 0;
 152
 153         if (rbuffer->pb) {
 154                 return (uint8_t*)pb_map(rbuffer->pb, transfer->usage) + transfer->box.x;
 155         }
 156         if (transfer->usage & PIPE_TRANSFER_DONTBLOCK) {
 157                 /* FIXME */
 158         }
 159         if (transfer->usage & PIPE_TRANSFER_WRITE) {
 160                 write = 1;
 161         }
 162         if (radeon_bo_map(rscreen->rw, rbuffer->bo)) {
 163                 return NULL;
 164         }
 165         return (uint8_t*)rbuffer->bo->data + transfer->box.x;
 166 }
 167
 168 static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
 169                                        struct pipe_transfer *transfer)
 170 {
 171         struct r600_buffer *rbuffer = (struct r600_buffer*)transfer->resource;
 172         struct r600_screen *rscreen = r600_screen(pipe->screen);
 173
 174         if (rbuffer->pb) {
 175                 pb_unmap(rbuffer->pb);
 176         } else {
 177                 radeon_bo_unmap(rscreen->rw, rbuffer->bo);
 178         }
 179 }
 180
 181 static void r600_buffer_transfer_flush_region(struct pipe_context *pipe,
 182                                               struct pipe_transfer *transfer,
 183                                               const struct pipe_box *box)
 184 {
 185 }
 186
 187 unsigned r600_buffer_is_referenced_by_cs(struct pipe_context *context,
 188                                          struct pipe_resource *buf,
 189                                          unsigned face, unsigned level)
 190 {
 191         /* XXX */
 192         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 193 }
 194
 195 struct pipe_resource *r600_buffer_from_handle(struct pipe_screen *screen,
 196                                               struct winsys_handle *whandle)
 197 {
 198         struct radeon *rw = (struct radeon*)screen->winsys;
 199         struct r600_buffer *rbuffer;
 200         struct radeon_bo *bo = NULL;
 201
 202         bo = radeon_bo(rw, whandle->handle, 0, 0, NULL);
 203         if (bo == NULL) {
 204                 return NULL;
 205         }
 206
 207         rbuffer = CALLOC_STRUCT(r600_buffer);
 208         if (rbuffer == NULL) {
 209                 radeon_bo_decref(rw, bo);
 210                 return NULL;
 211         }
 212
 213         pipe_reference_init(&rbuffer->b.b.reference, 1);
 214         rbuffer->b.b.target = PIPE_BUFFER;
 215         rbuffer->b.b.screen = screen;
 216         rbuffer->b.vtbl = &r600_buffer_vtbl;
 217         rbuffer->bo = bo;
 218         return &rbuffer->b.b;
 219 }
 220
 221 struct u_resource_vtbl r600_buffer_vtbl =
 222 {
 223         u_default_resource_get_handle,          /* get_handle */
 224         r600_buffer_destroy,                    /* resource_destroy */
 225         r600_buffer_is_referenced_by_cs,        /* is_buffer_referenced */
 226         u_default_get_transfer,                 /* get_transfer */
 227         u_default_transfer_destroy,             /* transfer_destroy */
 228         r600_buffer_transfer_map,               /* transfer_map */
 229         r600_buffer_transfer_flush_region,      /* transfer_flush_region */
 230         r600_buffer_transfer_unmap,             /* transfer_unmap */
 231         u_default_transfer_inline_write         /* transfer_inline_write */
 232 };