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