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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 | ||
58 | ret = nouveau_mem_init_heap(&chan->notifier_heap, 0, ntfy->bo.mem.size); | |
59 | if (ret) | |
60 | goto out_err; | |
61 | ||
62 | chan->notifier_bo = ntfy; | |
63 | out_err: | |
64 | if (ret) { | |
65 | mutex_lock(&dev->struct_mutex); | |
66 | drm_gem_object_unreference(ntfy->gem); | |
67 | mutex_unlock(&dev->struct_mutex); | |
68 | } | |
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); | |
84 | drm_gem_object_unreference(chan->notifier_bo->gem); | |
85 | mutex_unlock(&dev->struct_mutex); | |
86 | nouveau_mem_takedown(&chan->notifier_heap); | |
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) | |
96 | nouveau_mem_free_block(gpuobj->priv); | |
97 | } | |
98 | ||
99 | int | |
100 | nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle, | |
101 | int size, uint32_t *b_offset) | |
102 | { | |
103 | struct drm_device *dev = chan->dev; | |
104 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
105 | struct nouveau_gpuobj *nobj = NULL; | |
106 | struct mem_block *mem; | |
107 | uint32_t offset; | |
108 | int target, ret; | |
109 | ||
110 | if (!chan->notifier_heap) { | |
111 | NV_ERROR(dev, "Channel %d doesn't have a notifier heap!\n", | |
112 | chan->id); | |
113 | return -EINVAL; | |
114 | } | |
115 | ||
116 | mem = nouveau_mem_alloc_block(chan->notifier_heap, size, 0, | |
117 | (struct drm_file *)-2, 0); | |
118 | if (!mem) { | |
119 | NV_ERROR(dev, "Channel %d notifier block full\n", chan->id); | |
120 | return -ENOMEM; | |
121 | } | |
122 | ||
123 | offset = chan->notifier_bo->bo.mem.mm_node->start << PAGE_SHIFT; | |
124 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) { | |
125 | target = NV_DMA_TARGET_VIDMEM; | |
126 | } else | |
127 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_TT) { | |
128 | if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA && | |
129 | dev_priv->card_type < NV_50) { | |
130 | ret = nouveau_sgdma_get_page(dev, offset, &offset); | |
131 | if (ret) | |
132 | return ret; | |
133 | target = NV_DMA_TARGET_PCI; | |
134 | } else { | |
135 | target = NV_DMA_TARGET_AGP; | |
f927b890 BS |
136 | if (dev_priv->card_type >= NV_50) |
137 | offset += dev_priv->vm_gart_base; | |
6ee73861 BS |
138 | } |
139 | } else { | |
140 | NV_ERROR(dev, "Bad DMA target, mem_type %d!\n", | |
141 | chan->notifier_bo->bo.mem.mem_type); | |
142 | return -EINVAL; | |
143 | } | |
144 | offset += mem->start; | |
145 | ||
146 | ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset, | |
147 | mem->size, NV_DMA_ACCESS_RW, target, | |
148 | &nobj); | |
149 | if (ret) { | |
150 | nouveau_mem_free_block(mem); | |
151 | NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret); | |
152 | return ret; | |
153 | } | |
154 | nobj->dtor = nouveau_notifier_gpuobj_dtor; | |
155 | nobj->priv = mem; | |
156 | ||
157 | ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL); | |
158 | if (ret) { | |
159 | nouveau_gpuobj_del(dev, &nobj); | |
160 | nouveau_mem_free_block(mem); | |
161 | NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret); | |
162 | return ret; | |
163 | } | |
164 | ||
165 | *b_offset = mem->start; | |
166 | return 0; | |
167 | } | |
168 | ||
169 | int | |
170 | nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset) | |
171 | { | |
172 | if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor) | |
173 | return -EINVAL; | |
174 | ||
175 | if (poffset) { | |
176 | struct mem_block *mem = nobj->priv; | |
177 | ||
178 | if (*poffset >= mem->size) | |
179 | return false; | |
180 | ||
181 | *poffset += mem->start; | |
182 | } | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | int | |
188 | nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data, | |
189 | struct drm_file *file_priv) | |
190 | { | |
191 | struct drm_nouveau_notifierobj_alloc *na = data; | |
192 | struct nouveau_channel *chan; | |
193 | int ret; | |
194 | ||
195 | NOUVEAU_CHECK_INITIALISED_WITH_RETURN; | |
196 | NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan); | |
197 | ||
198 | ret = nouveau_notifier_alloc(chan, na->handle, na->size, &na->offset); | |
199 | if (ret) | |
200 | return ret; | |
201 | ||
202 | return 0; | |
203 | } |