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
23*4882a593Smuzhiyun */
24*4882a593Smuzhiyun #include "nouveau_drv.h"
25*4882a593Smuzhiyun #include "nouveau_dma.h"
26*4882a593Smuzhiyun #include "nouveau_fence.h"
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun #include <nvif/if0004.h>
29*4882a593Smuzhiyun #include <nvif/push006c.h>
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun struct nv04_fence_chan {
32*4882a593Smuzhiyun struct nouveau_fence_chan base;
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun struct nv04_fence_priv {
36*4882a593Smuzhiyun struct nouveau_fence_priv base;
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun static int
nv04_fence_emit(struct nouveau_fence * fence)40*4882a593Smuzhiyun nv04_fence_emit(struct nouveau_fence *fence)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun struct nvif_push *push = fence->channel->chan.push;
43*4882a593Smuzhiyun int ret = PUSH_WAIT(push, 2);
44*4882a593Smuzhiyun if (ret == 0) {
45*4882a593Smuzhiyun PUSH_NVSQ(push, NV_SW, 0x0150, fence->base.seqno);
46*4882a593Smuzhiyun PUSH_KICK(push);
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun return ret;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun static int
nv04_fence_sync(struct nouveau_fence * fence,struct nouveau_channel * prev,struct nouveau_channel * chan)52*4882a593Smuzhiyun nv04_fence_sync(struct nouveau_fence *fence,
53*4882a593Smuzhiyun struct nouveau_channel *prev, struct nouveau_channel *chan)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun return -ENODEV;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun static u32
nv04_fence_read(struct nouveau_channel * chan)59*4882a593Smuzhiyun nv04_fence_read(struct nouveau_channel *chan)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun struct nv04_nvsw_get_ref_v0 args = {};
62*4882a593Smuzhiyun WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF,
63*4882a593Smuzhiyun &args, sizeof(args)));
64*4882a593Smuzhiyun return args.ref;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun static void
nv04_fence_context_del(struct nouveau_channel * chan)68*4882a593Smuzhiyun nv04_fence_context_del(struct nouveau_channel *chan)
69*4882a593Smuzhiyun {
70*4882a593Smuzhiyun struct nv04_fence_chan *fctx = chan->fence;
71*4882a593Smuzhiyun nouveau_fence_context_del(&fctx->base);
72*4882a593Smuzhiyun chan->fence = NULL;
73*4882a593Smuzhiyun nouveau_fence_context_free(&fctx->base);
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun static int
nv04_fence_context_new(struct nouveau_channel * chan)77*4882a593Smuzhiyun nv04_fence_context_new(struct nouveau_channel *chan)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
80*4882a593Smuzhiyun if (fctx) {
81*4882a593Smuzhiyun nouveau_fence_context_new(chan, &fctx->base);
82*4882a593Smuzhiyun fctx->base.emit = nv04_fence_emit;
83*4882a593Smuzhiyun fctx->base.sync = nv04_fence_sync;
84*4882a593Smuzhiyun fctx->base.read = nv04_fence_read;
85*4882a593Smuzhiyun chan->fence = fctx;
86*4882a593Smuzhiyun return 0;
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun return -ENOMEM;
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun static void
nv04_fence_destroy(struct nouveau_drm * drm)92*4882a593Smuzhiyun nv04_fence_destroy(struct nouveau_drm *drm)
93*4882a593Smuzhiyun {
94*4882a593Smuzhiyun struct nv04_fence_priv *priv = drm->fence;
95*4882a593Smuzhiyun drm->fence = NULL;
96*4882a593Smuzhiyun kfree(priv);
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun int
nv04_fence_create(struct nouveau_drm * drm)100*4882a593Smuzhiyun nv04_fence_create(struct nouveau_drm *drm)
101*4882a593Smuzhiyun {
102*4882a593Smuzhiyun struct nv04_fence_priv *priv;
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
105*4882a593Smuzhiyun if (!priv)
106*4882a593Smuzhiyun return -ENOMEM;
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun priv->base.dtor = nv04_fence_destroy;
109*4882a593Smuzhiyun priv->base.context_new = nv04_fence_context_new;
110*4882a593Smuzhiyun priv->base.context_del = nv04_fence_context_del;
111*4882a593Smuzhiyun return 0;
112*4882a593Smuzhiyun }
113