1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
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:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
23 */
24
25 #include <nvif/os.h>
26 #include <nvif/class.h>
27 #include <nvif/cl0002.h>
28
29 #include "nouveau_drv.h"
30 #include "nouveau_dma.h"
31 #include "nv10_fence.h"
32
33 #include "nv50_display.h"
34
35 static int
nv50_fence_context_new(struct nouveau_channel * chan)36 nv50_fence_context_new(struct nouveau_channel *chan)
37 {
38 struct nv10_fence_priv *priv = chan->drm->fence;
39 struct nv10_fence_chan *fctx;
40 struct ttm_mem_reg *reg = &priv->bo->bo.mem;
41 u32 start = reg->start * PAGE_SIZE;
42 u32 limit = start + reg->size - 1;
43 int ret;
44
45 fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
46 if (!fctx)
47 return -ENOMEM;
48
49 nouveau_fence_context_new(chan, &fctx->base);
50 fctx->base.emit = nv10_fence_emit;
51 fctx->base.read = nv10_fence_read;
52 fctx->base.sync = nv17_fence_sync;
53
54 ret = nvif_object_init(&chan->user, NvSema, NV_DMA_IN_MEMORY,
55 &(struct nv_dma_v0) {
56 .target = NV_DMA_V0_TARGET_VRAM,
57 .access = NV_DMA_V0_ACCESS_RDWR,
58 .start = start,
59 .limit = limit,
60 }, sizeof(struct nv_dma_v0),
61 &fctx->sema);
62 if (ret)
63 nv10_fence_context_del(chan);
64 return ret;
65 }
66
67 int
nv50_fence_create(struct nouveau_drm * drm)68 nv50_fence_create(struct nouveau_drm *drm)
69 {
70 struct nv10_fence_priv *priv;
71 int ret = 0;
72
73 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
74 if (!priv)
75 return -ENOMEM;
76
77 priv->base.dtor = nv10_fence_destroy;
78 priv->base.resume = nv17_fence_resume;
79 priv->base.context_new = nv50_fence_context_new;
80 priv->base.context_del = nv10_fence_context_del;
81 spin_lock_init(&priv->lock);
82
83 ret = nouveau_bo_new(&drm->client, 4096, 0x1000, TTM_PL_FLAG_VRAM,
84 0, 0x0000, NULL, NULL, &priv->bo);
85 if (!ret) {
86 ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM, false);
87 if (!ret) {
88 ret = nouveau_bo_map(priv->bo);
89 if (ret)
90 nouveau_bo_unpin(priv->bo);
91 }
92 if (ret)
93 nouveau_bo_ref(NULL, &priv->bo);
94 }
95
96 if (ret) {
97 nv10_fence_destroy(drm);
98 return ret;
99 }
100
101 nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
102 return ret;
103 }
104