src/gallium/winsys/r600/drm/radeon_bo.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  */
  26 #define _FILE_OFFSET_BITS 64
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <sys/mman.h>
  31 #include <errno.h>
  32 #include "r600_priv.h"
  33 #include "xf86drm.h"
  34 #include "radeon_drm.h"
  35
  36 static int radeon_bo_fixed_map(struct radeon *radeon, struct radeon_bo *bo)
  37 {
  38         struct drm_radeon_gem_mmap args;
  39         void *ptr;
  40         int r;
  41
  42         /* Zero out args to make valgrind happy */
  43         memset(&args, 0, sizeof(args));
  44         args.handle = bo->handle;
  45         args.offset = 0;
  46         args.size = (uint64_t)bo->size;
  47         r = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_MMAP,
  48                                 &args, sizeof(args));
  49         if (r) {
  50                 fprintf(stderr, "error mapping %p 0x%08X (error = %d)\n",
  51                         bo, bo->handle, r);
  52                 return r;
  53         }
  54         ptr = mmap(0, args.size, PROT_READ|PROT_WRITE, MAP_SHARED, radeon->fd, args.addr_ptr);
  55         if (ptr == MAP_FAILED) {
  56                 fprintf(stderr, "%s failed to map bo\n", __func__);
  57                 return -errno;
  58         }
  59         bo->data = ptr;
  60
  61         bo->map_count++;
  62         return 0;
  63 }
  64
  65 static void radeon_bo_fixed_unmap(struct radeon *radeon, struct radeon_bo *bo)
  66 {
  67         munmap(bo->data, bo->size);
  68         bo->data = NULL;
  69 }
  70
  71 struct radeon_bo *radeon_bo(struct radeon *radeon, unsigned handle,
  72                         unsigned size, unsigned alignment)
  73 {
  74         struct radeon_bo *bo;
  75         int r;
  76
  77         bo = calloc(1, sizeof(*bo));
  78         if (bo == NULL) {
  79                 return NULL;
  80         }
  81         bo->size = size;
  82         bo->handle = handle;
  83         pipe_reference_init(&bo->reference, 1);
  84         bo->alignment = alignment;
  85         LIST_INITHEAD(&bo->fencedlist);
  86
  87         if (handle) {
  88                 struct drm_gem_open open_arg;
  89
  90                 memset(&open_arg, 0, sizeof(open_arg));
  91                 open_arg.name = handle;
  92                 r = drmIoctl(radeon->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
  93                 if (r != 0) {
  94                         free(bo);
  95                         return NULL;
  96                 }
  97                 bo->handle = open_arg.handle;
  98                 bo->size = open_arg.size;
  99                 bo->shared = TRUE;
 100         } else {
 101                 struct drm_radeon_gem_create args;
 102
 103                 args.size = size;
 104                 args.alignment = alignment;
 105                 args.initial_domain = RADEON_GEM_DOMAIN_CPU;
 106                 args.flags = 0;
 107                 args.handle = 0;
 108                 r = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_CREATE,
 109                                         &args, sizeof(args));
 110                 bo->handle = args.handle;
 111                 if (r) {
 112                         fprintf(stderr, "Failed to allocate :\n");
 113                         fprintf(stderr, "   size      : %d bytes\n", size);
 114                         fprintf(stderr, "   alignment : %d bytes\n", alignment);
 115                         free(bo);
 116                         return NULL;
 117                 }
 118         }
 119         if (radeon_bo_fixed_map(radeon, bo)) {
 120                 R600_ERR("failed to map bo\n");
 121                 radeon_bo_reference(radeon, &bo, NULL);
 122                 return bo;
 123         }
 124         return bo;
 125 }
 126
 127 static void radeon_bo_destroy(struct radeon *radeon, struct radeon_bo *bo)
 128 {
 129         struct drm_gem_close args;
 130
 131         LIST_DEL(&bo->fencedlist);
 132         radeon_bo_fixed_unmap(radeon, bo);
 133         memset(&args, 0, sizeof(args));
 134         args.handle = bo->handle;
 135         drmIoctl(radeon->fd, DRM_IOCTL_GEM_CLOSE, &args);
 136         memset(bo, 0, sizeof(struct radeon_bo));
 137         free(bo);
 138 }
 139
 140 void radeon_bo_reference(struct radeon *radeon,
 141                          struct radeon_bo **dst,
 142                          struct radeon_bo *src)
 143 {
 144         struct radeon_bo *old = *dst;
 145         if (pipe_reference(&(*dst)->reference, &src->reference)) {
 146                 radeon_bo_destroy(radeon, old);
 147         }
 148         *dst = src;
 149 }
 150
 151 int radeon_bo_wait(struct radeon *radeon, struct radeon_bo *bo)
 152 {
 153         struct drm_radeon_gem_wait_idle args;
 154         int ret;
 155
 156         if (!bo->shared) {
 157                 if (!bo->fence)
 158                         return 0;
 159                 if (bo->fence <= *bo->ctx->cfence) {
 160                         LIST_DELINIT(&bo->fencedlist);
 161                         bo->fence = 0;
 162                         return 0;
 163                 }
 164         }
 165
 166         /* Zero out args to make valgrind happy */
 167         memset(&args, 0, sizeof(args));
 168         args.handle = bo->handle;
 169         do {
 170                 ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_WAIT_IDLE,
 171                                         &args, sizeof(args));
 172         } while (ret == -EBUSY);
 173         return ret;
 174 }
 175
 176 int radeon_bo_busy(struct radeon *radeon, struct radeon_bo *bo, uint32_t *domain)
 177 {
 178         struct drm_radeon_gem_busy args;
 179         int ret;
 180
 181         if (!bo->shared) {
 182                 if (!bo->fence)
 183                         return 0;
 184                 if (bo->fence <= *bo->ctx->cfence) {
 185                         LIST_DELINIT(&bo->fencedlist);
 186                         bo->fence = 0;
 187                         return 0;
 188                 }
 189         }
 190
 191         memset(&args, 0, sizeof(args));
 192         args.handle = bo->handle;
 193         args.domain = 0;
 194
 195         ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_BUSY,
 196                         &args, sizeof(args));
 197
 198         *domain = args.domain;
 199         return ret;
 200 }
 201
 202 int radeon_bo_get_tiling_flags(struct radeon *radeon,
 203                                struct radeon_bo *bo,
 204                                uint32_t *tiling_flags,
 205                                uint32_t *pitch)
 206 {
 207         struct drm_radeon_gem_get_tiling args;
 208         int ret;
 209
 210         args.handle = bo->handle;
 211         ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_GET_TILING,
 212                                   &args, sizeof(args));
 213         if (ret)
 214                 return ret;
 215
 216         *tiling_flags = args.tiling_flags;
 217         *pitch = args.pitch;
 218         return ret;
 219 }
 220
 221 int radeon_bo_get_name(struct radeon *radeon,
 222                        struct radeon_bo *bo,
 223                        uint32_t *name)
 224 {
 225         struct drm_gem_flink flink;
 226         int ret;
 227
 228         flink.handle = bo->handle;
 229         ret = drmIoctl(radeon->fd, DRM_IOCTL_GEM_FLINK, &flink);
 230         if (ret)
 231                 return ret;
 232
 233         *name = flink.name;
 234         return ret;
 235 }