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_drmif.h"
28 #include "nouveau_dma.h"
31 nouveau_channel_alloc(struct nouveau_device *userdev, uint32_t fb_ctxdma,
32 uint32_t tt_ctxdma, struct nouveau_channel **userchan)
34 struct nouveau_device_priv *nv = nouveau_device(userdev);
35 struct nouveau_channel_priv *chan;
38 if (!nv || !userchan || *userchan)
41 chan = calloc(1, sizeof(*chan));
44 chan->base.device = userdev;
46 chan->drm.fb_ctxdma_handle = fb_ctxdma;
47 chan->drm.tt_ctxdma_handle = tt_ctxdma;
48 ret = drmCommandWriteRead(nv->fd, DRM_NOUVEAU_CHANNEL_ALLOC,
49 &chan->drm, sizeof(chan->drm));
55 chan->base.id = chan->drm.channel;
56 if (nouveau_grobj_ref(&chan->base, chan->drm.fb_ctxdma_handle,
58 nouveau_grobj_ref(&chan->base, chan->drm.tt_ctxdma_handle,
60 nouveau_channel_free((void *)&chan);
63 ret = drmMap(nv->fd, chan->drm.ctrl, chan->drm.ctrl_size,
66 nouveau_channel_free((void *)&chan);
69 chan->put = &chan->user[0x40/4];
70 chan->get = &chan->user[0x44/4];
71 chan->ref_cnt = &chan->user[0x48/4];
73 ret = drmMap(nv->fd, chan->drm.notifier, chan->drm.notifier_size,
74 (drmAddressPtr)&chan->notifier_block);
76 nouveau_channel_free((void *)&chan);
80 ret = drmMap(nv->fd, chan->drm.cmdbuf, chan->drm.cmdbuf_size,
81 (void*)&chan->pushbuf);
83 nouveau_channel_free((void *)&chan);
87 chan->max_relocs = chan->drm.cmdbuf_size / 4;
90 malloc(sizeof(struct nouveau_bo_reloc) * chan->max_relocs);
92 nouveau_dma_channel_init(&chan->base);
94 *userchan = &chan->base;
99 nouveau_channel_free(struct nouveau_channel **userchan)
101 struct nouveau_channel_priv *chan;
105 chan = nouveau_channel(*userchan);
108 struct nouveau_device_priv *nv;
109 struct drm_nouveau_channel_free cf;
111 nv = nouveau_device((*userchan)->device);
114 FIRE_RING_CH(*userchan);
119 nouveau_grobj_free(&chan->base.vram);
120 nouveau_grobj_free(&chan->base.gart);
122 cf.channel = chan->drm.channel;
123 drmCommandWrite(nv->fd, DRM_NOUVEAU_CHANNEL_FREE,