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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" | |
31 | ||
32 | int | |
33 | nouveau_notifier_init_channel(struct nouveau_channel *chan) | |
34 | { | |
35 | struct drm_device *dev = chan->dev; | |
36 | struct nouveau_bo *ntfy = NULL; | |
f927b890 | 37 | uint32_t flags; |
6ee73861 BS |
38 | int ret; |
39 | ||
f927b890 BS |
40 | if (nouveau_vram_notify) |
41 | flags = TTM_PL_FLAG_VRAM; | |
42 | else | |
43 | flags = TTM_PL_FLAG_TT; | |
44 | ||
45 | ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags, | |
6ee73861 BS |
46 | 0, 0x0000, false, true, &ntfy); |
47 | if (ret) | |
48 | return ret; | |
49 | ||
f927b890 | 50 | ret = nouveau_bo_pin(ntfy, flags); |
6ee73861 BS |
51 | if (ret) |
52 | goto out_err; | |
53 | ||
54 | ret = nouveau_bo_map(ntfy); | |
55 | if (ret) | |
56 | goto out_err; | |
57 | ||
b833ac26 | 58 | ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size); |
6ee73861 BS |
59 | if (ret) |
60 | goto out_err; | |
61 | ||
62 | chan->notifier_bo = ntfy; | |
63 | out_err: | |
bc9025bd LB |
64 | if (ret) |
65 | drm_gem_object_unreference_unlocked(ntfy->gem); | |
6ee73861 BS |
66 | |
67 | return ret; | |
68 | } | |
69 | ||
70 | void | |
71 | nouveau_notifier_takedown_channel(struct nouveau_channel *chan) | |
72 | { | |
73 | struct drm_device *dev = chan->dev; | |
74 | ||
75 | if (!chan->notifier_bo) | |
76 | return; | |
77 | ||
78 | nouveau_bo_unmap(chan->notifier_bo); | |
79 | mutex_lock(&dev->struct_mutex); | |
80 | nouveau_bo_unpin(chan->notifier_bo); | |
6ee73861 | 81 | mutex_unlock(&dev->struct_mutex); |
bc9025bd | 82 | drm_gem_object_unreference_unlocked(chan->notifier_bo->gem); |
b833ac26 | 83 | drm_mm_takedown(&chan->notifier_heap); |
6ee73861 BS |
84 | } |
85 | ||
86 | static void | |
87 | nouveau_notifier_gpuobj_dtor(struct drm_device *dev, | |
88 | struct nouveau_gpuobj *gpuobj) | |
89 | { | |
90 | NV_DEBUG(dev, "\n"); | |
91 | ||
92 | if (gpuobj->priv) | |
b833ac26 | 93 | drm_mm_put_block(gpuobj->priv); |
6ee73861 BS |
94 | } |
95 | ||
96 | int | |
97 | nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle, | |
98 | int size, uint32_t *b_offset) | |
99 | { | |
100 | struct drm_device *dev = chan->dev; | |
101 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
102 | struct nouveau_gpuobj *nobj = NULL; | |
b833ac26 | 103 | struct drm_mm_node *mem; |
6ee73861 BS |
104 | uint32_t offset; |
105 | int target, ret; | |
106 | ||
b833ac26 BS |
107 | mem = drm_mm_search_free(&chan->notifier_heap, size, 0, 0); |
108 | if (mem) | |
109 | mem = drm_mm_get_block(mem, size, 0); | |
6ee73861 BS |
110 | if (!mem) { |
111 | NV_ERROR(dev, "Channel %d notifier block full\n", chan->id); | |
112 | return -ENOMEM; | |
113 | } | |
114 | ||
115 | offset = chan->notifier_bo->bo.mem.mm_node->start << PAGE_SHIFT; | |
116 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) { | |
117 | target = NV_DMA_TARGET_VIDMEM; | |
118 | } else | |
119 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_TT) { | |
120 | if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA && | |
121 | dev_priv->card_type < NV_50) { | |
122 | ret = nouveau_sgdma_get_page(dev, offset, &offset); | |
123 | if (ret) | |
124 | return ret; | |
125 | target = NV_DMA_TARGET_PCI; | |
126 | } else { | |
127 | target = NV_DMA_TARGET_AGP; | |
f927b890 BS |
128 | if (dev_priv->card_type >= NV_50) |
129 | offset += dev_priv->vm_gart_base; | |
6ee73861 BS |
130 | } |
131 | } else { | |
132 | NV_ERROR(dev, "Bad DMA target, mem_type %d!\n", | |
133 | chan->notifier_bo->bo.mem.mem_type); | |
134 | return -EINVAL; | |
135 | } | |
136 | offset += mem->start; | |
137 | ||
138 | ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset, | |
139 | mem->size, NV_DMA_ACCESS_RW, target, | |
140 | &nobj); | |
141 | if (ret) { | |
b833ac26 | 142 | drm_mm_put_block(mem); |
6ee73861 BS |
143 | NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret); |
144 | return ret; | |
145 | } | |
b833ac26 BS |
146 | nobj->dtor = nouveau_notifier_gpuobj_dtor; |
147 | nobj->priv = mem; | |
6ee73861 BS |
148 | |
149 | ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL); | |
150 | if (ret) { | |
151 | nouveau_gpuobj_del(dev, &nobj); | |
b833ac26 | 152 | drm_mm_put_block(mem); |
6ee73861 BS |
153 | NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret); |
154 | return ret; | |
155 | } | |
156 | ||
157 | *b_offset = mem->start; | |
158 | return 0; | |
159 | } | |
160 | ||
161 | int | |
162 | nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset) | |
163 | { | |
164 | if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor) | |
165 | return -EINVAL; | |
166 | ||
167 | if (poffset) { | |
b833ac26 | 168 | struct drm_mm_node *mem = nobj->priv; |
6ee73861 BS |
169 | |
170 | if (*poffset >= mem->size) | |
171 | return false; | |
172 | ||
173 | *poffset += mem->start; | |
174 | } | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | int | |
180 | nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data, | |
181 | struct drm_file *file_priv) | |
182 | { | |
183 | struct drm_nouveau_notifierobj_alloc *na = data; | |
184 | struct nouveau_channel *chan; | |
185 | int ret; | |
186 | ||
6ee73861 BS |
187 | NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan); |
188 | ||
189 | ret = nouveau_notifier_alloc(chan, na->handle, na->size, &na->offset); | |
190 | if (ret) | |
191 | return ret; | |
192 | ||
193 | return 0; | |
194 | } |