This source file includes following definitions.
- nv04_fence_emit
- nv04_fence_sync
- nv04_fence_read
- nv04_fence_context_del
- nv04_fence_context_new
- nv04_fence_destroy
- nv04_fence_create
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25 #include "nouveau_drv.h"
26 #include "nouveau_dma.h"
27 #include "nouveau_fence.h"
28
29 #include <nvif/if0004.h>
30
31 struct nv04_fence_chan {
32 struct nouveau_fence_chan base;
33 };
34
35 struct nv04_fence_priv {
36 struct nouveau_fence_priv base;
37 };
38
39 static int
40 nv04_fence_emit(struct nouveau_fence *fence)
41 {
42 struct nouveau_channel *chan = fence->channel;
43 int ret = RING_SPACE(chan, 2);
44 if (ret == 0) {
45 BEGIN_NV04(chan, NvSubSw, 0x0150, 1);
46 OUT_RING (chan, fence->base.seqno);
47 FIRE_RING (chan);
48 }
49 return ret;
50 }
51
52 static int
53 nv04_fence_sync(struct nouveau_fence *fence,
54 struct nouveau_channel *prev, struct nouveau_channel *chan)
55 {
56 return -ENODEV;
57 }
58
59 static u32
60 nv04_fence_read(struct nouveau_channel *chan)
61 {
62 struct nv04_nvsw_get_ref_v0 args = {};
63 WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF,
64 &args, sizeof(args)));
65 return args.ref;
66 }
67
68 static void
69 nv04_fence_context_del(struct nouveau_channel *chan)
70 {
71 struct nv04_fence_chan *fctx = chan->fence;
72 nouveau_fence_context_del(&fctx->base);
73 chan->fence = NULL;
74 nouveau_fence_context_free(&fctx->base);
75 }
76
77 static int
78 nv04_fence_context_new(struct nouveau_channel *chan)
79 {
80 struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
81 if (fctx) {
82 nouveau_fence_context_new(chan, &fctx->base);
83 fctx->base.emit = nv04_fence_emit;
84 fctx->base.sync = nv04_fence_sync;
85 fctx->base.read = nv04_fence_read;
86 chan->fence = fctx;
87 return 0;
88 }
89 return -ENOMEM;
90 }
91
92 static void
93 nv04_fence_destroy(struct nouveau_drm *drm)
94 {
95 struct nv04_fence_priv *priv = drm->fence;
96 drm->fence = NULL;
97 kfree(priv);
98 }
99
100 int
101 nv04_fence_create(struct nouveau_drm *drm)
102 {
103 struct nv04_fence_priv *priv;
104
105 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
106 if (!priv)
107 return -ENOMEM;
108
109 priv->base.dtor = nv04_fence_destroy;
110 priv->base.context_new = nv04_fence_context_new;
111 priv->base.context_del = nv04_fence_context_del;
112 return 0;
113 }