1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2012 Red Hat Inc.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Permission is hereby granted, free of charge, to any person obtaining a
5*4882a593Smuzhiyun * copy of this software and associated documentation files (the "Software"),
6*4882a593Smuzhiyun * to deal in the Software without restriction, including without limitation
7*4882a593Smuzhiyun * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8*4882a593Smuzhiyun * and/or sell copies of the Software, and to permit persons to whom the
9*4882a593Smuzhiyun * Software is furnished to do so, subject to the following conditions:
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * The above copyright notice and this permission notice shall be included in
12*4882a593Smuzhiyun * all copies or substantial portions of the Software.
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15*4882a593Smuzhiyun * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16*4882a593Smuzhiyun * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17*4882a593Smuzhiyun * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18*4882a593Smuzhiyun * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19*4882a593Smuzhiyun * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20*4882a593Smuzhiyun * OTHER DEALINGS IN THE SOFTWARE.
21*4882a593Smuzhiyun *
22*4882a593Smuzhiyun * Authors: Ben Skeggs <bskeggs@redhat.com>
23*4882a593Smuzhiyun */
24*4882a593Smuzhiyun #include "nouveau_drv.h"
25*4882a593Smuzhiyun #include "nouveau_dma.h"
26*4882a593Smuzhiyun #include "nv10_fence.h"
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun #include <nvif/push006c.h>
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #include <nvhw/class/cl006e.h>
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun int
nv10_fence_emit(struct nouveau_fence * fence)33*4882a593Smuzhiyun nv10_fence_emit(struct nouveau_fence *fence)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun struct nvif_push *push = fence->channel->chan.push;
36*4882a593Smuzhiyun int ret = PUSH_WAIT(push, 2);
37*4882a593Smuzhiyun if (ret == 0) {
38*4882a593Smuzhiyun PUSH_MTHD(push, NV06E, SET_REFERENCE, fence->base.seqno);
39*4882a593Smuzhiyun PUSH_KICK(push);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun return ret;
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun static int
nv10_fence_sync(struct nouveau_fence * fence,struct nouveau_channel * prev,struct nouveau_channel * chan)46*4882a593Smuzhiyun nv10_fence_sync(struct nouveau_fence *fence,
47*4882a593Smuzhiyun struct nouveau_channel *prev, struct nouveau_channel *chan)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun return -ENODEV;
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun u32
nv10_fence_read(struct nouveau_channel * chan)53*4882a593Smuzhiyun nv10_fence_read(struct nouveau_channel *chan)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun return NVIF_RD32(&chan->user, NV06E, REFERENCE);
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun void
nv10_fence_context_del(struct nouveau_channel * chan)59*4882a593Smuzhiyun nv10_fence_context_del(struct nouveau_channel *chan)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun struct nv10_fence_chan *fctx = chan->fence;
62*4882a593Smuzhiyun nouveau_fence_context_del(&fctx->base);
63*4882a593Smuzhiyun nvif_object_dtor(&fctx->sema);
64*4882a593Smuzhiyun chan->fence = NULL;
65*4882a593Smuzhiyun nouveau_fence_context_free(&fctx->base);
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun static int
nv10_fence_context_new(struct nouveau_channel * chan)69*4882a593Smuzhiyun nv10_fence_context_new(struct nouveau_channel *chan)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun struct nv10_fence_chan *fctx;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
74*4882a593Smuzhiyun if (!fctx)
75*4882a593Smuzhiyun return -ENOMEM;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun nouveau_fence_context_new(chan, &fctx->base);
78*4882a593Smuzhiyun fctx->base.emit = nv10_fence_emit;
79*4882a593Smuzhiyun fctx->base.read = nv10_fence_read;
80*4882a593Smuzhiyun fctx->base.sync = nv10_fence_sync;
81*4882a593Smuzhiyun return 0;
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun void
nv10_fence_destroy(struct nouveau_drm * drm)85*4882a593Smuzhiyun nv10_fence_destroy(struct nouveau_drm *drm)
86*4882a593Smuzhiyun {
87*4882a593Smuzhiyun struct nv10_fence_priv *priv = drm->fence;
88*4882a593Smuzhiyun nouveau_bo_unmap(priv->bo);
89*4882a593Smuzhiyun if (priv->bo)
90*4882a593Smuzhiyun nouveau_bo_unpin(priv->bo);
91*4882a593Smuzhiyun nouveau_bo_ref(NULL, &priv->bo);
92*4882a593Smuzhiyun drm->fence = NULL;
93*4882a593Smuzhiyun kfree(priv);
94*4882a593Smuzhiyun }
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun int
nv10_fence_create(struct nouveau_drm * drm)97*4882a593Smuzhiyun nv10_fence_create(struct nouveau_drm *drm)
98*4882a593Smuzhiyun {
99*4882a593Smuzhiyun struct nv10_fence_priv *priv;
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
102*4882a593Smuzhiyun if (!priv)
103*4882a593Smuzhiyun return -ENOMEM;
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun priv->base.dtor = nv10_fence_destroy;
106*4882a593Smuzhiyun priv->base.context_new = nv10_fence_context_new;
107*4882a593Smuzhiyun priv->base.context_del = nv10_fence_context_del;
108*4882a593Smuzhiyun spin_lock_init(&priv->lock);
109*4882a593Smuzhiyun return 0;
110*4882a593Smuzhiyun }
111