2 * Copyright 2007 Nouveau Project
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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
27 #include "nouveau_private.h"
30 nouveau_channel_alloc(struct nouveau_device *dev, uint32_t fb_ctxdma,
31 uint32_t tt_ctxdma, int pushbuf_size,
32 struct nouveau_channel **chan)
34 struct nouveau_device_priv *nvdev = nouveau_device(dev);
35 struct nouveau_channel_priv *nvchan;
39 if (!nvdev || !chan || *chan)
42 nvchan = calloc(1, sizeof(struct nouveau_channel_priv));
45 nvchan->base.device = dev;
47 nvchan->drm.fb_ctxdma_handle = fb_ctxdma;
48 nvchan->drm.tt_ctxdma_handle = tt_ctxdma;
49 ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_CHANNEL_ALLOC,
50 &nvchan->drm, sizeof(nvchan->drm));
56 nvchan->base.id = nvchan->drm.channel;
57 if (nouveau_grobj_ref(&nvchan->base, nvchan->drm.fb_ctxdma_handle,
58 &nvchan->base.vram) ||
59 nouveau_grobj_ref(&nvchan->base, nvchan->drm.tt_ctxdma_handle,
60 &nvchan->base.gart)) {
61 nouveau_channel_free((void *)&nvchan);
65 /* Mark all DRM-assigned subchannels as in-use */
66 for (i = 0; i < nvchan->drm.nr_subchan; i++) {
67 struct nouveau_grobj_priv *gr = calloc(1, sizeof(*gr));
69 gr->base.bound = NOUVEAU_GROBJ_BOUND_EXPLICIT;
71 gr->base.handle = nvchan->drm.subchan[i].handle;
72 gr->base.grclass = nvchan->drm.subchan[i].grclass;
73 gr->base.channel = &nvchan->base;
75 nvchan->base.subc[i].gr = &gr->base;
78 if (dev->chipset < 0xc0) {
79 ret = nouveau_bo_wrap(dev, nvchan->drm.notifier_handle,
80 &nvchan->notifier_bo);
82 ret = nouveau_bo_map(nvchan->notifier_bo,
85 nouveau_channel_free((void *)&nvchan);
89 ret = nouveau_grobj_alloc(&nvchan->base, 0x00000000, 0x0030,
90 &nvchan->base.nullobj);
92 nouveau_channel_free((void *)&nvchan);
97 ret = nouveau_pushbuf_init(&nvchan->base, pushbuf_size);
99 nouveau_channel_free((void *)&nvchan);
103 *chan = &nvchan->base;
108 nouveau_channel_free(struct nouveau_channel **chan)
110 struct nouveau_channel_priv *nvchan;
111 struct nouveau_device_priv *nvdev;
112 struct drm_nouveau_channel_free cf;
117 nvchan = nouveau_channel(*chan);
118 (*chan)->flush_notify = NULL;
120 nvdev = nouveau_device(nvchan->base.device);
122 FIRE_RING(&nvchan->base);
124 nouveau_pushbuf_fini(&nvchan->base);
125 if (nvchan->notifier_bo) {
126 nouveau_bo_unmap(nvchan->notifier_bo);
127 nouveau_bo_ref(NULL, &nvchan->notifier_bo);
130 for (i = 0; i < nvchan->drm.nr_subchan; i++)
131 free(nvchan->base.subc[i].gr);
133 nouveau_grobj_free(&nvchan->base.vram);
134 nouveau_grobj_free(&nvchan->base.gart);
135 nouveau_grobj_free(&nvchan->base.nullobj);
137 cf.channel = nvchan->drm.channel;
138 drmCommandWrite(nvdev->fd, DRM_NOUVEAU_CHANNEL_FREE, &cf, sizeof(cf));