1/* $NetBSD: nouveau_nv50_fence.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $ */
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs <bskeggs@redhat.com>
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_nv50_fence.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $");
29
30#include <core/object.h>
31#include <core/class.h>
32
33#include "nouveau_drm.h"
34#include "nouveau_dma.h"
35#include "nv10_fence.h"
36
37#include "nv50_display.h"
38
39static int
40nv50_fence_context_new(struct nouveau_channel *chan)
41{
42 struct drm_device *dev = chan->drm->dev;
43 struct nv10_fence_priv *priv = chan->drm->fence;
44 struct nv10_fence_chan *fctx;
45 struct ttm_mem_reg *mem = &priv->bo->bo.mem;
46 struct nouveau_object *object;
47 u32 start = mem->start * PAGE_SIZE;
48 u32 limit = start + mem->size - 1;
49 int ret, i;
50
51 fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
52 if (!fctx)
53 return -ENOMEM;
54
55 nouveau_fence_context_new(&fctx->base);
56 fctx->base.emit = nv10_fence_emit;
57 fctx->base.read = nv10_fence_read;
58 fctx->base.sync = nv17_fence_sync;
59
60 ret = nouveau_object_new(nv_object(chan->cli), chan->handle,
61 NvSema, 0x003d,
62 &(struct nv_dma_class) {
63 .flags = NV_DMA_TARGET_VRAM |
64 NV_DMA_ACCESS_RDWR,
65 .start = start,
66 .limit = limit,
67 }, sizeof(struct nv_dma_class),
68 &object);
69
70 /* dma objects for display sync channel semaphore blocks */
71 for (i = 0; !ret && i < dev->mode_config.num_crtc; i++) {
72 struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i);
73 u32 start = bo->bo.mem.start * PAGE_SIZE;
74 u32 limit = start + bo->bo.mem.size - 1;
75
76 ret = nouveau_object_new(nv_object(chan->cli), chan->handle,
77 NvEvoSema0 + i, 0x003d,
78 &(struct nv_dma_class) {
79 .flags = NV_DMA_TARGET_VRAM |
80 NV_DMA_ACCESS_RDWR,
81 .start = start,
82 .limit = limit,
83 }, sizeof(struct nv_dma_class),
84 &object);
85 }
86
87 if (ret)
88 nv10_fence_context_del(chan);
89 return ret;
90}
91
92int
93nv50_fence_create(struct nouveau_drm *drm)
94{
95 struct nv10_fence_priv *priv;
96 int ret = 0;
97
98 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
99 if (!priv)
100 return -ENOMEM;
101
102 priv->base.dtor = nv10_fence_destroy;
103 priv->base.resume = nv17_fence_resume;
104 priv->base.context_new = nv50_fence_context_new;
105 priv->base.context_del = nv10_fence_context_del;
106 spin_lock_init(&priv->lock);
107
108 ret = nouveau_bo_new(drm->dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
109 0, 0x0000, NULL, &priv->bo);
110 if (!ret) {
111 ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM);
112 if (!ret) {
113 ret = nouveau_bo_map(priv->bo);
114 if (ret)
115 nouveau_bo_unpin(priv->bo);
116 }
117 if (ret)
118 nouveau_bo_ref(NULL, &priv->bo);
119 }
120
121 if (ret) {
122 nv10_fence_destroy(drm);
123 return ret;
124 }
125
126 nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
127 return ret;
128}
129