radeon/radeon_cs_space.c

   1 /*
   2  * Copyright © 2009 Red Hat Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  15  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  17  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  */
  26 /*
  27  */
  28 #include <assert.h>
  29 #include <errno.h>
  30 #include <stdlib.h>
  31 #include "libdrm_macros.h"
  32 #include "radeon_cs.h"
  33 #include "radeon_bo_int.h"
  34 #include "radeon_cs_int.h"
  35
  36 struct rad_sizes {
  37     int32_t op_read;
  38     int32_t op_gart_write;
  39     int32_t op_vram_write;
  40 };
  41
  42 static inline int radeon_cs_setup_bo(struct radeon_cs_space_check *sc, struct rad_sizes *sizes)
  43 {
  44     uint32_t read_domains, write_domain;
  45     struct radeon_bo_int *bo;
  46
  47     bo = sc->bo;
  48     sc->new_accounted = 0;
  49     read_domains = sc->read_domains;
  50     write_domain = sc->write_domain;
  51
  52     /* legacy needs a static check */
  53     if (radeon_bo_is_static((struct radeon_bo *)sc->bo)) {
  54         bo->space_accounted = sc->new_accounted = (read_domains << 16) | write_domain;
  55         return 0;
  56     }
  57
  58     /* already accounted this bo */
  59     if (write_domain && (write_domain == bo->space_accounted)) {
  60         sc->new_accounted = bo->space_accounted;
  61         return 0;
  62     }
  63     if (read_domains && ((read_domains << 16) == bo->space_accounted)) {
  64         sc->new_accounted = bo->space_accounted;
  65         return 0;
  66     }
  67
  68     if (bo->space_accounted == 0) {
  69         if (write_domain) {
  70             if (write_domain == RADEON_GEM_DOMAIN_VRAM)
  71                 sizes->op_vram_write += bo->size;
  72             else if (write_domain == RADEON_GEM_DOMAIN_GTT)
  73                 sizes->op_gart_write += bo->size;
  74             sc->new_accounted = write_domain;
  75         } else {
  76             sizes->op_read += bo->size;
  77             sc->new_accounted = read_domains << 16;
  78         }
  79     } else {
  80         uint16_t old_read, old_write;
  81
  82         old_read = bo->space_accounted >> 16;
  83         old_write = bo->space_accounted & 0xffff;
  84
  85         if (write_domain && (old_read & write_domain)) {
  86             sc->new_accounted = write_domain;
  87             /* moving from read to a write domain */
  88             if (write_domain == RADEON_GEM_DOMAIN_VRAM) {
  89                 sizes->op_read -= bo->size;
  90                 sizes->op_vram_write += bo->size;
  91             } else if (write_domain == RADEON_GEM_DOMAIN_GTT) {
  92                 sizes->op_read -= bo->size;
  93                 sizes->op_gart_write += bo->size;
  94             }
  95         } else if (read_domains & old_write) {
  96             sc->new_accounted = bo->space_accounted & 0xffff;
  97         } else {
  98             /* rewrite the domains */
  99             if (write_domain != old_write)
 100                 fprintf(stderr,"WRITE DOMAIN RELOC FAILURE 0x%x %d %d\n", bo->handle, write_domain, old_write);
 101             if (read_domains != old_read)
 102                fprintf(stderr,"READ DOMAIN RELOC FAILURE 0x%x %d %d\n", bo->handle, read_domains, old_read);
 103             return RADEON_CS_SPACE_FLUSH;
 104         }
 105     }
 106     return 0;
 107 }
 108
 109 static int radeon_cs_do_space_check(struct radeon_cs_int *cs, struct radeon_cs_space_check *new_tmp)
 110 {
 111     struct radeon_cs_manager *csm = cs->csm;
 112     int i;
 113     struct radeon_bo_int *bo;
 114     struct rad_sizes sizes;
 115     int ret;
 116
 117     /* check the totals for this operation */
 118
 119     if (cs->bo_count == 0 && !new_tmp)
 120         return 0;
 121
 122     memset(&sizes, 0, sizeof(struct rad_sizes));
 123
 124     /* prepare */
 125     for (i = 0; i < cs->bo_count; i++) {
 126         ret = radeon_cs_setup_bo(&cs->bos[i], &sizes);
 127         if (ret)
 128             return ret;
 129     }
 130
 131     if (new_tmp) {
 132         ret = radeon_cs_setup_bo(new_tmp, &sizes);
 133         if (ret)
 134             return ret;
 135     }
 136
 137     if (sizes.op_read < 0)
 138         sizes.op_read = 0;
 139
 140     /* check sizes - operation first */
 141     if ((sizes.op_read + sizes.op_gart_write > csm->gart_limit) ||
 142         (sizes.op_vram_write > csm->vram_limit)) {
 143         return RADEON_CS_SPACE_OP_TO_BIG;
 144     }
 145
 146     if (((csm->vram_write_used + sizes.op_vram_write) > csm->vram_limit) ||
 147         ((csm->read_used + csm->gart_write_used + sizes.op_gart_write + sizes.op_read) > csm->gart_limit)) {
 148         return RADEON_CS_SPACE_FLUSH;
 149     }
 150
 151     csm->gart_write_used += sizes.op_gart_write;
 152     csm->vram_write_used += sizes.op_vram_write;
 153     csm->read_used += sizes.op_read;
 154     /* commit */
 155     for (i = 0; i < cs->bo_count; i++) {
 156         bo = cs->bos[i].bo;
 157         bo->space_accounted = cs->bos[i].new_accounted;
 158     }
 159     if (new_tmp)
 160         new_tmp->bo->space_accounted = new_tmp->new_accounted;
 161
 162     return RADEON_CS_SPACE_OK;
 163 }
 164
 165 drm_public void
 166 radeon_cs_space_add_persistent_bo(struct radeon_cs *cs, struct radeon_bo *bo,
 167                                   uint32_t read_domains, uint32_t write_domain)
 168 {
 169     struct radeon_cs_int *csi = (struct radeon_cs_int *)cs;
 170     struct radeon_bo_int *boi = (struct radeon_bo_int *)bo;
 171     int i;
 172     for (i = 0; i < csi->bo_count; i++) {
 173         if (csi->bos[i].bo == boi &&
 174             csi->bos[i].read_domains == read_domains &&
 175             csi->bos[i].write_domain == write_domain)
 176             return;
 177     }
 178     radeon_bo_ref(bo);
 179     i = csi->bo_count;
 180     csi->bos[i].bo = boi;
 181     csi->bos[i].read_domains = read_domains;
 182     csi->bos[i].write_domain = write_domain;
 183     csi->bos[i].new_accounted = 0;
 184     csi->bo_count++;
 185
 186     assert(csi->bo_count < MAX_SPACE_BOS);
 187 }
 188
 189 static int radeon_cs_check_space_internal(struct radeon_cs_int *cs,
 190                       struct radeon_cs_space_check *tmp_bo)
 191 {
 192     int ret;
 193     int flushed = 0;
 194
 195 again:
 196     ret = radeon_cs_do_space_check(cs, tmp_bo);
 197     if (ret == RADEON_CS_SPACE_OP_TO_BIG)
 198         return -1;
 199     if (ret == RADEON_CS_SPACE_FLUSH) {
 200         (*cs->space_flush_fn)(cs->space_flush_data);
 201         if (flushed)
 202             return -1;
 203         flushed = 1;
 204         goto again;
 205     }
 206     return 0;
 207 }
 208
 209 drm_public int
 210 radeon_cs_space_check_with_bo(struct radeon_cs *cs, struct radeon_bo *bo,
 211                               uint32_t read_domains, uint32_t write_domain)
 212 {
 213     struct radeon_cs_int *csi = (struct radeon_cs_int *)cs;
 214     struct radeon_bo_int *boi = (struct radeon_bo_int *)bo;
 215     struct radeon_cs_space_check temp_bo;
 216
 217     int ret = 0;
 218
 219     if (bo) {
 220         temp_bo.bo = boi;
 221         temp_bo.read_domains = read_domains;
 222         temp_bo.write_domain = write_domain;
 223         temp_bo.new_accounted = 0;
 224     }
 225
 226     ret = radeon_cs_check_space_internal(csi, bo ? &temp_bo : NULL);
 227     return ret;
 228 }
 229
 230 drm_public int radeon_cs_space_check(struct radeon_cs *cs)
 231 {
 232     struct radeon_cs_int *csi = (struct radeon_cs_int *)cs;
 233     return radeon_cs_check_space_internal(csi, NULL);
 234 }
 235
 236 drm_public void radeon_cs_space_reset_bos(struct radeon_cs *cs)
 237 {
 238     struct radeon_cs_int *csi = (struct radeon_cs_int *)cs;
 239     int i;
 240     for (i = 0; i < csi->bo_count; i++) {
 241         radeon_bo_unref((struct radeon_bo *)csi->bos[i].bo);
 242         csi->bos[i].bo = NULL;
 243         csi->bos[i].read_domains = 0;
 244         csi->bos[i].write_domain = 0;
 245         csi->bos[i].new_accounted = 0;
 246     }
 247     csi->bo_count = 0;
 248 }