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 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         if (bo->data) {
  68                 munmap(bo->data, bo->size);
  69                 bo->data = NULL;
  70         }
  71 }
  72
  73 struct radeon_bo *radeon_bo(struct radeon *radeon, unsigned handle,
  74                             unsigned size, unsigned alignment, unsigned initial_domain)
  75 {
  76         struct radeon_bo *bo;
  77         int r;
  78
  79         if (handle) {
  80                 pipe_mutex_lock(radeon->bo_handles_mutex);
  81                 bo = util_hash_table_get(radeon->bo_handles,
  82                                          (void *)(uintptr_t)handle);
  83                 if (bo) {
  84                         struct radeon_bo *b = NULL;
  85                         radeon_bo_reference(radeon, &b, bo);
  86                         goto done;
  87                 }
  88         }
  89         bo = calloc(1, sizeof(*bo));
  90         if (bo == NULL) {
  91                 return NULL;
  92         }
  93         bo->size = size;
  94         bo->handle = handle;
  95         pipe_reference_init(&bo->reference, 1);
  96         bo->alignment = alignment;
  97         LIST_INITHEAD(&bo->fencedlist);
  98
  99         if (handle) {
 100                 struct drm_gem_open open_arg;
 101
 102                 memset(&open_arg, 0, sizeof(open_arg));
 103                 open_arg.name = handle;
 104                 r = drmIoctl(radeon->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
 105                 if (r != 0) {
 106                         free(bo);
 107                         return NULL;
 108                 }
 109                 bo->name = handle;
 110                 bo->handle = open_arg.handle;
 111                 bo->size = open_arg.size;
 112                 bo->shared = TRUE;
 113         } else {
 114                 struct drm_radeon_gem_create args = {};
 115
 116                 args.size = size;
 117                 args.alignment = alignment;
 118                 args.initial_domain = initial_domain;
 119                 args.flags = 0;
 120                 args.handle = 0;
 121                 r = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_CREATE,
 122                                         &args, sizeof(args));
 123                 bo->handle = args.handle;
 124                 if (r) {
 125                         fprintf(stderr, "Failed to allocate :\n");
 126                         fprintf(stderr, "   size      : %d bytes\n", size);
 127                         fprintf(stderr, "   alignment : %d bytes\n", alignment);
 128                         free(bo);
 129                         return NULL;
 130                 }
 131         }
 132
 133         if (handle)
 134                 util_hash_table_set(radeon->bo_handles, (void *)(uintptr_t)handle, bo);
 135 done:
 136         if (handle)
 137                 pipe_mutex_unlock(radeon->bo_handles_mutex);
 138
 139         return bo;
 140 }
 141
 142 static void radeon_bo_destroy(struct radeon *radeon, struct radeon_bo *bo)
 143 {
 144         struct drm_gem_close args;
 145
 146         if (bo->name) {
 147                 pipe_mutex_lock(radeon->bo_handles_mutex);
 148                 util_hash_table_remove(radeon->bo_handles,
 149                                        (void *)(uintptr_t)bo->name);
 150                 pipe_mutex_unlock(radeon->bo_handles_mutex);
 151         }
 152         LIST_DEL(&bo->fencedlist);
 153         radeon_bo_fixed_unmap(radeon, bo);
 154         memset(&args, 0, sizeof(args));
 155         args.handle = bo->handle;
 156         drmIoctl(radeon->fd, DRM_IOCTL_GEM_CLOSE, &args);
 157         memset(bo, 0, sizeof(struct radeon_bo));
 158         free(bo);
 159 }
 160
 161 void radeon_bo_reference(struct radeon *radeon,
 162                          struct radeon_bo **dst,
 163                          struct radeon_bo *src)
 164 {
 165         struct radeon_bo *old = *dst;
 166         if (pipe_reference(&(*dst)->reference, &src->reference)) {
 167                 radeon_bo_destroy(radeon, old);
 168         }
 169         *dst = src;
 170 }
 171
 172 int radeon_bo_wait(struct radeon *radeon, struct radeon_bo *bo)
 173 {
 174         struct drm_radeon_gem_wait_idle args;
 175         int ret;
 176
 177         if (!bo->shared) {
 178                 if (!bo->fence)
 179                         return 0;
 180                 if (bo->fence <= *radeon->cfence) {
 181                         LIST_DELINIT(&bo->fencedlist);
 182                         bo->fence = 0;
 183                         return 0;
 184                 }
 185         }
 186
 187         /* Zero out args to make valgrind happy */
 188         memset(&args, 0, sizeof(args));
 189         args.handle = bo->handle;
 190         do {
 191                 ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_WAIT_IDLE,
 192                                         &args, sizeof(args));
 193         } while (ret == -EBUSY);
 194         return ret;
 195 }
 196
 197 int radeon_bo_busy(struct radeon *radeon, struct radeon_bo *bo, uint32_t *domain)
 198 {
 199         struct drm_radeon_gem_busy args;
 200         int ret;
 201
 202         if (!bo->shared) {
 203                 if (!bo->fence)
 204                         return 0;
 205                 if (bo->fence <= *radeon->cfence) {
 206                         LIST_DELINIT(&bo->fencedlist);
 207                         bo->fence = 0;
 208                         return 0;
 209                 }
 210         }
 211
 212         memset(&args, 0, sizeof(args));
 213         args.handle = bo->handle;
 214         args.domain = 0;
 215
 216         ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_BUSY,
 217                         &args, sizeof(args));
 218
 219         *domain = args.domain;
 220         return ret;
 221 }
 222
 223 int radeon_bo_get_tiling_flags(struct radeon *radeon,
 224                                struct radeon_bo *bo,
 225                                uint32_t *tiling_flags,
 226                                uint32_t *pitch)
 227 {
 228         struct drm_radeon_gem_get_tiling args = {};
 229         int ret;
 230
 231         args.handle = bo->handle;
 232         ret = drmCommandWriteRead(radeon->fd, DRM_RADEON_GEM_GET_TILING,
 233                                   &args, sizeof(args));
 234         if (ret)
 235                 return ret;
 236
 237         *tiling_flags = args.tiling_flags;
 238         *pitch = args.pitch;
 239         return ret;
 240 }
 241
 242 int radeon_bo_get_name(struct radeon *radeon,
 243                        struct radeon_bo *bo,
 244                        uint32_t *name)
 245 {
 246         struct drm_gem_flink flink;
 247         int ret;
 248
 249         flink.handle = bo->handle;
 250         ret = drmIoctl(radeon->fd, DRM_IOCTL_GEM_FLINK, &flink);
 251         if (ret)
 252                 return ret;
 253
 254         *name = flink.name;
 255         return ret;
 256 }