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 "util/u_upload_mgr.h"
  33
  34 #include "state_tracker/drm_driver.h"
  35
  36 #include <xf86drm.h>
  37 #include "radeon_drm.h"
  38
  39 #include "r600.h"
  40 #include "r600_pipe.h"
  41
  42 static void r600_buffer_destroy(struct pipe_screen *screen,
  43                                 struct pipe_resource *buf)
  44 {
  45         struct r600_resource_buffer *rbuffer = r600_buffer(buf);
  46
  47         if (rbuffer->r.bo) {
  48                 r600_bo_reference((struct radeon*)screen->winsys, &rbuffer->r.bo, NULL);
  49         }
  50         rbuffer->r.bo = NULL;
  51         FREE(rbuffer);
  52 }
  53
  54 static unsigned r600_buffer_is_referenced_by_cs(struct pipe_context *context,
  55                                                 struct pipe_resource *buf,
  56                                                 unsigned level, int layer)
  57 {
  58         /* FIXME */
  59         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
  60 }
  61
  62 static void *r600_buffer_transfer_map(struct pipe_context *pipe,
  63                                       struct pipe_transfer *transfer)
  64 {
  65         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
  66         int write = 0;
  67         uint8_t *data;
  68
  69         if (rbuffer->r.b.user_ptr)
  70                 return (uint8_t*)rbuffer->r.b.user_ptr + transfer->box.x;
  71
  72         if (transfer->usage & PIPE_TRANSFER_DONTBLOCK) {
  73                 /* FIXME */
  74         }
  75         if (transfer->usage & PIPE_TRANSFER_WRITE) {
  76                 write = 1;
  77         }
  78         data = r600_bo_map((struct radeon*)pipe->winsys, rbuffer->r.bo, transfer->usage, pipe);
  79         if (!data)
  80                 return NULL;
  81
  82         return (uint8_t*)data + transfer->box.x;
  83 }
  84
  85 static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
  86                                         struct pipe_transfer *transfer)
  87 {
  88         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
  89
  90         if (rbuffer->r.b.user_ptr)
  91                 return;
  92
  93         if (rbuffer->r.bo)
  94                 r600_bo_unmap((struct radeon*)pipe->winsys, rbuffer->r.bo);
  95 }
  96
  97 static void r600_buffer_transfer_flush_region(struct pipe_context *pipe,
  98                                                 struct pipe_transfer *transfer,
  99                                                 const struct pipe_box *box)
 100 {
 101 }
 102
 103 static const struct u_resource_vtbl r600_buffer_vtbl =
 104 {
 105         u_default_resource_get_handle,          /* get_handle */
 106         r600_buffer_destroy,                    /* resource_destroy */
 107         r600_buffer_is_referenced_by_cs,        /* is_buffer_referenced */
 108         u_default_get_transfer,                 /* get_transfer */
 109         u_default_transfer_destroy,             /* transfer_destroy */
 110         r600_buffer_transfer_map,               /* transfer_map */
 111         r600_buffer_transfer_flush_region,      /* transfer_flush_region */
 112         r600_buffer_transfer_unmap,             /* transfer_unmap */
 113         u_default_transfer_inline_write         /* transfer_inline_write */
 114 };
 115
 116 struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
 117                                          const struct pipe_resource *templ)
 118 {
 119         struct r600_resource_buffer *rbuffer;
 120         struct r600_bo *bo;
 121         /* XXX We probably want a different alignment for buffers and textures. */
 122         unsigned alignment = 4096;
 123
 124         rbuffer = CALLOC_STRUCT(r600_resource_buffer);
 125         if (rbuffer == NULL)
 126                 return NULL;
 127
 128         rbuffer->magic = R600_BUFFER_MAGIC;
 129         rbuffer->r.b.b.b = *templ;
 130         pipe_reference_init(&rbuffer->r.b.b.b.reference, 1);
 131         rbuffer->r.b.b.b.screen = screen;
 132         rbuffer->r.b.b.vtbl = &r600_buffer_vtbl;
 133         rbuffer->r.b.user_ptr = NULL;
 134         rbuffer->r.size = rbuffer->r.b.b.b.width0;
 135         rbuffer->r.bo_size = rbuffer->r.size;
 136
 137         bo = r600_bo((struct radeon*)screen->winsys,
 138                      rbuffer->r.b.b.b.width0,
 139                      alignment, rbuffer->r.b.b.b.bind,
 140                      rbuffer->r.b.b.b.usage);
 141
 142         if (bo == NULL) {
 143                 FREE(rbuffer);
 144                 return NULL;
 145         }
 146         rbuffer->r.bo = bo;
 147         return &rbuffer->r.b.b.b;
 148 }
 149
 150 struct pipe_resource *r600_user_buffer_create(struct pipe_screen *screen,
 151                                               void *ptr, unsigned bytes,
 152                                               unsigned bind)
 153 {
 154         struct r600_resource_buffer *rbuffer;
 155
 156         rbuffer = CALLOC_STRUCT(r600_resource_buffer);
 157         if (rbuffer == NULL)
 158                 return NULL;
 159
 160         rbuffer->magic = R600_BUFFER_MAGIC;
 161         pipe_reference_init(&rbuffer->r.b.b.b.reference, 1);
 162         rbuffer->r.b.b.vtbl = &r600_buffer_vtbl;
 163         rbuffer->r.b.b.b.screen = screen;
 164         rbuffer->r.b.b.b.target = PIPE_BUFFER;
 165         rbuffer->r.b.b.b.format = PIPE_FORMAT_R8_UNORM;
 166         rbuffer->r.b.b.b.usage = PIPE_USAGE_IMMUTABLE;
 167         rbuffer->r.b.b.b.bind = bind;
 168         rbuffer->r.b.b.b.width0 = bytes;
 169         rbuffer->r.b.b.b.height0 = 1;
 170         rbuffer->r.b.b.b.depth0 = 1;
 171         rbuffer->r.b.b.b.array_size = 1;
 172         rbuffer->r.b.b.b.flags = 0;
 173         rbuffer->r.b.user_ptr = ptr;
 174         rbuffer->r.bo = NULL;
 175         rbuffer->r.bo_size = 0;
 176         return &rbuffer->r.b.b.b;
 177 }
 178
 179 struct pipe_resource *r600_buffer_from_handle(struct pipe_screen *screen,
 180                                               struct winsys_handle *whandle)
 181 {
 182         struct radeon *rw = (struct radeon*)screen->winsys;
 183         struct r600_resource *rbuffer;
 184         struct r600_bo *bo = NULL;
 185
 186         bo = r600_bo_handle(rw, whandle->handle, NULL);
 187         if (bo == NULL) {
 188                 return NULL;
 189         }
 190
 191         rbuffer = CALLOC_STRUCT(r600_resource);
 192         if (rbuffer == NULL) {
 193                 r600_bo_reference(rw, &bo, NULL);
 194                 return NULL;
 195         }
 196
 197         pipe_reference_init(&rbuffer->b.b.b.reference, 1);
 198         rbuffer->b.b.b.target = PIPE_BUFFER;
 199         rbuffer->b.b.b.screen = screen;
 200         rbuffer->b.b.vtbl = &r600_buffer_vtbl;
 201         rbuffer->bo = bo;
 202         return &rbuffer->b.b.b;
 203 }
 204
 205 void r600_upload_index_buffer(struct r600_pipe_context *rctx, struct r600_drawl *draw)
 206 {
 207         struct r600_resource_buffer *rbuffer = r600_buffer(draw->index_buffer);
 208         boolean flushed;
 209
 210         u_upload_data(rctx->upload_ib, 0,
 211                       draw->info.count * draw->index_size,
 212                       rbuffer->r.b.user_ptr,
 213                       &draw->index_buffer_offset,
 214                       &draw->index_buffer, &flushed);
 215 }
 216
 217 void r600_upload_const_buffer(struct r600_pipe_context *rctx, struct r600_resource_buffer **rbuffer,
 218                              uint32_t *const_offset)
 219 {
 220         if ((*rbuffer)->r.b.user_ptr) {
 221                 uint8_t *ptr = (*rbuffer)->r.b.user_ptr;
 222                 unsigned size = (*rbuffer)->r.b.b.b.width0;
 223                 boolean flushed;
 224
 225                 *rbuffer = NULL;
 226
 227                 u_upload_data(rctx->upload_const, 0, size, ptr, const_offset,
 228                               (struct pipe_resource**)rbuffer, &flushed);
 229         } else {
 230                 *const_offset = 0;
 231         }
 232 }