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         if (handle) {
  78                 pipe_mutex_lock(radeon->bo_handles_mutex);
  79                 bo = util_hash_table_get(radeon->bo_handles,
  80                                          (void *)(uintptr_t)handle);
  81                 if (bo) {
  82                         struct radeon_bo *b = NULL;
  83                         radeon_bo_reference(radeon, &b, bo);
  84                         goto done;
  85                 }
  86         }
  87         bo = calloc(1, sizeof(*bo));
  88         if (bo == NULL) {
  89                 return NULL;
  90         }
  91         bo->size = size;
  92         bo->handle = handle;
  93         pipe_reference_init(&bo->reference, 1);
  94         bo->alignment = alignment;
  95         LIST_INITHEAD(&bo->fencedlist);
  96
  97         if (handle) {
  98                 struct drm_gem_open open_arg;
  99
 100                 memset(&open_arg, 0, sizeof(open_arg));
 101                 open_arg.name = handle;
 102                 r = drmIoctl(radeon->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
 103                 if (r != 0) {
 104                         free(bo);
 105                         return NULL;
 106                 }
 107                 bo->name = handle;
 108                 bo->handle = open_arg.handle;
 109                 bo->size = open_arg.size;
 110                 bo->shared = TRUE;
 111         } else {
 112                 struct drm_radeon_gem_create args = {};
 113
 114                 args.size = size;
 115                 args.alignment = alignment;
 116                 args.initial_domain = RADEON_GEM_DOMAIN_CPU;
 117                 args.flags = 0;
 118                 args.handle = 0;
 119                 r = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_CREATE,
 120                                         &args, sizeof(args));
 121                 bo->handle = args.handle;
 122                 if (r) {
 123                         fprintf(stderr, "Failed to allocate :\n");
 124                         fprintf(stderr, "   size      : %d bytes\n", size);
 125                         fprintf(stderr, "   alignment : %d bytes\n", alignment);
 126                         free(bo);
 127                         return NULL;
 128                 }
 129         }
 130         if (radeon_bo_fixed_map(radeon, bo)) {
 131                 R600_ERR("failed to map bo\n");
 132                 radeon_bo_reference(radeon, &bo, NULL);
 133                 return bo;
 134         }
 135
 136         if (handle)
 137                 util_hash_table_set(radeon->bo_handles, (void *)(uintptr_t)handle, bo);
 138 done:
 139         if (handle)
 140                 pipe_mutex_unlock(radeon->bo_handles_mutex);
 141
 142         return bo;
 143 }
 144
 145 static void radeon_bo_destroy(struct radeon *radeon, struct radeon_bo *bo)
 146 {
 147         struct drm_gem_close args;
 148
 149         if (bo->name) {
 150                 pipe_mutex_lock(radeon->bo_handles_mutex);
 151                 util_hash_table_remove(radeon->bo_handles,
 152                                        (void *)(uintptr_t)bo->name);
 153                 pipe_mutex_unlock(radeon->bo_handles_mutex);
 154         }
 155         LIST_DEL(&bo->fencedlist);
 156         radeon_bo_fixed_unmap(radeon, bo);
 157         memset(&args, 0, sizeof(args));
 158         args.handle = bo->handle;
 159         drmIoctl(radeon->fd, DRM_IOCTL_GEM_CLOSE, &args);
 160         memset(bo, 0, sizeof(struct radeon_bo));
 161         free(bo);
 162 }
 163
 164 void radeon_bo_reference(struct radeon *radeon,
 165                          struct radeon_bo **dst,
 166                          struct radeon_bo *src)
 167 {
 168         struct radeon_bo *old = *dst;
 169         if (pipe_reference(&(*dst)->reference, &src->reference)) {
 170                 radeon_bo_destroy(radeon, old);
 171         }
 172         *dst = src;
 173 }
 174
 175 int radeon_bo_wait(struct radeon *radeon, struct radeon_bo *bo)
 176 {
 177         struct drm_radeon_gem_wait_idle args;
 178         int ret;
 179
 180         if (!bo->shared) {
 181                 if (!bo->fence)
 182                         return 0;
 183                 if (bo->fence <= *radeon->cfence) {
 184                         LIST_DELINIT(&bo->fencedlist);
 185                         bo->fence = 0;
 186                         return 0;
 187                 }
 188         }
 189
 190         /* Zero out args to make valgrind happy */
 191         memset(&args, 0, sizeof(args));
 192         args.handle = bo->handle;
 193         do {
 194                 ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_WAIT_IDLE,
 195                                         &args, sizeof(args));
 196         } while (ret == -EBUSY);
 197         return ret;
 198 }
 199
 200 int radeon_bo_busy(struct radeon *radeon, struct radeon_bo *bo, uint32_t *domain)
 201 {
 202         struct drm_radeon_gem_busy args;
 203         int ret;
 204
 205         if (!bo->shared) {
 206                 if (!bo->fence)
 207                         return 0;
 208                 if (bo->fence <= *radeon->cfence) {
 209                         LIST_DELINIT(&bo->fencedlist);
 210                         bo->fence = 0;
 211                         return 0;
 212                 }
 213         }
 214
 215         memset(&args, 0, sizeof(args));
 216         args.handle = bo->handle;
 217         args.domain = 0;
 218
 219         ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_BUSY,
 220                         &args, sizeof(args));
 221
 222         *domain = args.domain;
 223         return ret;
 224 }
 225
 226 int radeon_bo_get_tiling_flags(struct radeon *radeon,
 227                                struct radeon_bo *bo,
 228                                uint32_t *tiling_flags,
 229                                uint32_t *pitch)
 230 {
 231         struct drm_radeon_gem_get_tiling args = {};
 232         int ret;
 233
 234         args.handle = bo->handle;
 235         ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_GET_TILING,
 236                                   &args, sizeof(args));
 237         if (ret)
 238                 return ret;
 239
 240         *tiling_flags = args.tiling_flags;
 241         *pitch = args.pitch;
 242         return ret;
 243 }
 244
 245 int radeon_bo_get_name(struct radeon *radeon,
 246                        struct radeon_bo *bo,
 247                        uint32_t *name)
 248 {
 249         struct drm_gem_flink flink;
 250         int ret;
 251
 252         flink.handle = bo->handle;
 253         ret = drmIoctl(radeon->fd, DRM_IOCTL_GEM_FLINK, &flink);
 254         if (ret)
 255                 return ret;
 256
 257         *name = flink.name;
 258         return ret;
 259 }