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1 | /* |
2 | * Copyright (C) 2007 Ben Skeggs. | |
3 | * | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining | |
7 | * a copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sublicense, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial | |
16 | * portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
21 | * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE | |
22 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
23 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
24 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | */ | |
27 | ||
28 | #include "drmP.h" | |
29 | #include "drm.h" | |
30 | #include "nouveau_drv.h" | |
a8eaebc6 | 31 | #include "nouveau_ramht.h" |
6ee73861 BS |
32 | |
33 | int | |
34 | nouveau_notifier_init_channel(struct nouveau_channel *chan) | |
35 | { | |
36 | struct drm_device *dev = chan->dev; | |
37 | struct nouveau_bo *ntfy = NULL; | |
11dea1a2 | 38 | uint32_t flags, ttmpl; |
6ee73861 BS |
39 | int ret; |
40 | ||
11dea1a2 | 41 | if (nouveau_vram_notify) { |
6ba9a683 | 42 | flags = NOUVEAU_GEM_DOMAIN_VRAM; |
11dea1a2 BS |
43 | ttmpl = TTM_PL_FLAG_VRAM; |
44 | } else { | |
6ba9a683 | 45 | flags = NOUVEAU_GEM_DOMAIN_GART; |
11dea1a2 BS |
46 | ttmpl = TTM_PL_FLAG_TT; |
47 | } | |
f927b890 | 48 | |
d550c41e | 49 | ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags, 0, 0, &ntfy); |
6ee73861 BS |
50 | if (ret) |
51 | return ret; | |
52 | ||
11dea1a2 | 53 | ret = nouveau_bo_pin(ntfy, ttmpl); |
6ee73861 BS |
54 | if (ret) |
55 | goto out_err; | |
56 | ||
57 | ret = nouveau_bo_map(ntfy); | |
58 | if (ret) | |
59 | goto out_err; | |
60 | ||
b833ac26 | 61 | ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size); |
6ee73861 BS |
62 | if (ret) |
63 | goto out_err; | |
64 | ||
65 | chan->notifier_bo = ntfy; | |
66 | out_err: | |
bc9025bd LB |
67 | if (ret) |
68 | drm_gem_object_unreference_unlocked(ntfy->gem); | |
6ee73861 BS |
69 | |
70 | return ret; | |
71 | } | |
72 | ||
73 | void | |
74 | nouveau_notifier_takedown_channel(struct nouveau_channel *chan) | |
75 | { | |
76 | struct drm_device *dev = chan->dev; | |
77 | ||
78 | if (!chan->notifier_bo) | |
79 | return; | |
80 | ||
81 | nouveau_bo_unmap(chan->notifier_bo); | |
82 | mutex_lock(&dev->struct_mutex); | |
83 | nouveau_bo_unpin(chan->notifier_bo); | |
6ee73861 | 84 | mutex_unlock(&dev->struct_mutex); |
bc9025bd | 85 | drm_gem_object_unreference_unlocked(chan->notifier_bo->gem); |
b833ac26 | 86 | drm_mm_takedown(&chan->notifier_heap); |
6ee73861 BS |
87 | } |
88 | ||
89 | static void | |
90 | nouveau_notifier_gpuobj_dtor(struct drm_device *dev, | |
91 | struct nouveau_gpuobj *gpuobj) | |
92 | { | |
93 | NV_DEBUG(dev, "\n"); | |
94 | ||
95 | if (gpuobj->priv) | |
b833ac26 | 96 | drm_mm_put_block(gpuobj->priv); |
6ee73861 BS |
97 | } |
98 | ||
99 | int | |
100 | nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle, | |
73412c38 BS |
101 | int size, uint32_t start, uint32_t end, |
102 | uint32_t *b_offset) | |
6ee73861 BS |
103 | { |
104 | struct drm_device *dev = chan->dev; | |
26c0c9e3 | 105 | struct drm_nouveau_private *dev_priv = dev->dev_private; |
6ee73861 | 106 | struct nouveau_gpuobj *nobj = NULL; |
b833ac26 | 107 | struct drm_mm_node *mem; |
6ee73861 BS |
108 | uint32_t offset; |
109 | int target, ret; | |
110 | ||
73412c38 BS |
111 | mem = drm_mm_search_free_in_range(&chan->notifier_heap, size, 0, |
112 | start, end, 0); | |
b833ac26 | 113 | if (mem) |
73412c38 | 114 | mem = drm_mm_get_block_range(mem, size, 0, start, end); |
6ee73861 BS |
115 | if (!mem) { |
116 | NV_ERROR(dev, "Channel %d notifier block full\n", chan->id); | |
117 | return -ENOMEM; | |
118 | } | |
119 | ||
26c0c9e3 BS |
120 | if (dev_priv->card_type < NV_50) { |
121 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) | |
122 | target = NV_MEM_TARGET_VRAM; | |
123 | else | |
124 | target = NV_MEM_TARGET_GART; | |
125 | offset = chan->notifier_bo->bo.mem.start << PAGE_SHIFT; | |
126 | } else { | |
127 | target = NV_MEM_TARGET_VM; | |
128 | offset = chan->notifier_bo->vma.offset; | |
129 | } | |
6ee73861 BS |
130 | offset += mem->start; |
131 | ||
132 | ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset, | |
7f4a195f | 133 | mem->size, NV_MEM_ACCESS_RW, target, |
6ee73861 BS |
134 | &nobj); |
135 | if (ret) { | |
b833ac26 | 136 | drm_mm_put_block(mem); |
6ee73861 BS |
137 | NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret); |
138 | return ret; | |
139 | } | |
b833ac26 BS |
140 | nobj->dtor = nouveau_notifier_gpuobj_dtor; |
141 | nobj->priv = mem; | |
6ee73861 | 142 | |
a8eaebc6 BS |
143 | ret = nouveau_ramht_insert(chan, handle, nobj); |
144 | nouveau_gpuobj_ref(NULL, &nobj); | |
6ee73861 | 145 | if (ret) { |
b833ac26 | 146 | drm_mm_put_block(mem); |
a8eaebc6 | 147 | NV_ERROR(dev, "Error adding notifier to ramht: %d\n", ret); |
6ee73861 BS |
148 | return ret; |
149 | } | |
150 | ||
151 | *b_offset = mem->start; | |
152 | return 0; | |
153 | } | |
154 | ||
155 | int | |
156 | nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset) | |
157 | { | |
158 | if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor) | |
159 | return -EINVAL; | |
160 | ||
161 | if (poffset) { | |
b833ac26 | 162 | struct drm_mm_node *mem = nobj->priv; |
6ee73861 BS |
163 | |
164 | if (*poffset >= mem->size) | |
165 | return false; | |
166 | ||
167 | *poffset += mem->start; | |
168 | } | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | int | |
174 | nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data, | |
175 | struct drm_file *file_priv) | |
176 | { | |
587107b6 | 177 | struct drm_nouveau_private *dev_priv = dev->dev_private; |
6ee73861 BS |
178 | struct drm_nouveau_notifierobj_alloc *na = data; |
179 | struct nouveau_channel *chan; | |
180 | int ret; | |
181 | ||
587107b6 BS |
182 | /* completely unnecessary for these chipsets... */ |
183 | if (unlikely(dev_priv->card_type >= NV_C0)) | |
184 | return -EINVAL; | |
185 | ||
cff5c133 BS |
186 | chan = nouveau_channel_get(dev, file_priv, na->channel); |
187 | if (IS_ERR(chan)) | |
188 | return PTR_ERR(chan); | |
6ee73861 | 189 | |
73412c38 BS |
190 | ret = nouveau_notifier_alloc(chan, na->handle, na->size, 0, 0x1000, |
191 | &na->offset); | |
cff5c133 BS |
192 | nouveau_channel_put(&chan); |
193 | return ret; | |
6ee73861 | 194 | } |