libdrm/nouveau/nouveau_channel.c

   1 /*
   2  * Copyright 2007 Nouveau Project
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <errno.h>
  26
  27 #include "nouveau_private.h"
  28
  29 int
  30 nouveau_channel_alloc(struct nouveau_device *dev, uint32_t fb_ctxdma,
  31                       uint32_t tt_ctxdma, struct nouveau_channel **chan)
  32 {
  33         struct nouveau_device_priv *nvdev = nouveau_device(dev);
  34         struct nouveau_channel_priv *nvchan;
  35         unsigned i;
  36         int ret;
  37
  38         if (!nvdev || !chan || *chan)
  39             return -EINVAL;
  40
  41         nvchan = calloc(1, sizeof(struct nouveau_channel_priv));
  42         if (!nvchan)
  43                 return -ENOMEM;
  44         nvchan->base.device = dev;
  45
  46         nvchan->drm.fb_ctxdma_handle = fb_ctxdma;
  47         nvchan->drm.tt_ctxdma_handle = tt_ctxdma;
  48         ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_CHANNEL_ALLOC,
  49                                   &nvchan->drm, sizeof(nvchan->drm));
  50         if (ret) {
  51                 free(nvchan);
  52                 return ret;
  53         }
  54
  55         nvchan->base.id = nvchan->drm.channel;
  56         if (nouveau_grobj_ref(&nvchan->base, nvchan->drm.fb_ctxdma_handle,
  57                               &nvchan->base.vram) ||
  58             nouveau_grobj_ref(&nvchan->base, nvchan->drm.tt_ctxdma_handle,
  59                               &nvchan->base.gart)) {
  60                 nouveau_channel_free((void *)&nvchan);
  61                 return -EINVAL;
  62         }
  63
  64         /* Mark all DRM-assigned subchannels as in-use */
  65         for (i = 0; i < nvchan->drm.nr_subchan; i++) {
  66                 struct nouveau_grobj_priv *gr = calloc(1, sizeof(*gr));
  67
  68                 gr->base.bound = NOUVEAU_GROBJ_BOUND_EXPLICIT;
  69                 gr->base.subc = i;
  70                 gr->base.handle = nvchan->drm.subchan[i].handle;
  71                 gr->base.grclass = nvchan->drm.subchan[i].grclass;
  72                 gr->base.channel = &nvchan->base;
  73
  74                 nvchan->base.subc[i].gr = &gr->base;
  75         }
  76
  77         ret = drmMap(nvdev->fd, nvchan->drm.notifier, nvchan->drm.notifier_size,
  78                      (drmAddressPtr)&nvchan->notifier_block);
  79         if (ret) {
  80                 nouveau_channel_free((void *)&nvchan);
  81                 return ret;
  82         }
  83
  84         ret = nouveau_grobj_alloc(&nvchan->base, 0x00000000, 0x0030,
  85                                   &nvchan->base.nullobj);
  86         if (ret) {
  87                 nouveau_channel_free((void *)&nvchan);
  88                 return ret;
  89         }
  90
  91         if (!nvdev->mm_enabled) {
  92                 ret = drmMap(nvdev->fd, nvchan->drm.ctrl, nvchan->drm.ctrl_size,
  93                              (void*)&nvchan->user);
  94                 if (ret) {
  95                         nouveau_channel_free((void *)&nvchan);
  96                         return ret;
  97                 }
  98                 nvchan->put     = &nvchan->user[0x40/4];
  99                 nvchan->get     = &nvchan->user[0x44/4];
 100                 nvchan->ref_cnt = &nvchan->user[0x48/4];
 101
 102                 ret = drmMap(nvdev->fd, nvchan->drm.cmdbuf,
 103                              nvchan->drm.cmdbuf_size, (void*)&nvchan->pushbuf);
 104                 if (ret) {
 105                         nouveau_channel_free((void *)&nvchan);
 106                         return ret;
 107                 }
 108
 109                 nouveau_dma_channel_init(&nvchan->base);
 110         }
 111
 112         nouveau_pushbuf_init(&nvchan->base);
 113
 114         if (!nvdev->mm_enabled && dev->chipset < 0x10) {
 115                 ret = nouveau_grobj_alloc(&nvchan->base, 0xbeef3904, 0x5039,
 116                                           &nvchan->fence_grobj);
 117                 if (ret) {
 118                         nouveau_channel_free((void *)&nvchan);
 119                         return ret;
 120                 }
 121
 122                 ret = nouveau_notifier_alloc(&nvchan->base, 0xbeef3905, 1,
 123                                              &nvchan->fence_ntfy);
 124                 if (ret) {
 125                         nouveau_channel_free((void *)&nvchan);
 126                         return ret;
 127                 }
 128
 129                 BEGIN_RING(&nvchan->base, nvchan->fence_grobj, 0x0180, 1);
 130                 OUT_RING  (&nvchan->base, nvchan->fence_ntfy->handle);
 131                 nvchan->fence_grobj->bound = NOUVEAU_GROBJ_BOUND_EXPLICIT;
 132         }
 133
 134         *chan = &nvchan->base;
 135         return 0;
 136 }
 137
 138 void
 139 nouveau_channel_free(struct nouveau_channel **chan)
 140 {
 141         struct nouveau_channel_priv *nvchan;
 142         struct nouveau_device_priv *nvdev;
 143         struct drm_nouveau_channel_free cf;
 144
 145         if (!chan || !*chan)
 146                 return;
 147         nvchan = nouveau_channel(*chan);
 148         *chan = NULL;
 149         nvdev = nouveau_device(nvchan->base.device);
 150
 151         FIRE_RING(&nvchan->base);
 152
 153         if (!nvdev->mm_enabled) {
 154                 struct nouveau_fence *fence = NULL;
 155
 156                 /* Make sure all buffer objects on delayed delete queue
 157                  * actually get freed.
 158                  */
 159                 nouveau_fence_new(&nvchan->base, &fence);
 160                 nouveau_fence_emit(fence);
 161                 nouveau_fence_wait(&fence);
 162         }
 163
 164         if (nvchan->notifier_block)
 165                 drmUnmap(nvchan->notifier_block, nvchan->drm.notifier_size);
 166
 167         nouveau_grobj_free(&nvchan->base.vram);
 168         nouveau_grobj_free(&nvchan->base.gart);
 169         nouveau_grobj_free(&nvchan->base.nullobj);
 170         nouveau_grobj_free(&nvchan->fence_grobj);
 171         nouveau_notifier_free(&nvchan->fence_ntfy);
 172
 173         cf.channel = nvchan->drm.channel;
 174         drmCommandWrite(nvdev->fd, DRM_NOUVEAU_CHANNEL_FREE, &cf, sizeof(cf));
 175         free(nvchan);
 176 }
 177
 178