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
|
/*
* 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_dma.h"
static int
nouveau_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags);
/* DRM's channel always uses IRQs to signal fences */
if (class == dev_priv->channel.chan->id)
return 1;
/* Other channels don't use IRQs at all yet */
return 0;
}
static int
nouveau_fence_emit(struct drm_device *dev, uint32_t class, uint32_t flags,
uint32_t *breadcrumb, uint32_t *native_type)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_channel *chan = dev_priv->fifos[class];
struct nouveau_drm_channel *dchan = &dev_priv->channel;
DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags);
/* We can't emit fences on client channels */
if (chan != dchan->chan)
return 0;
*breadcrumb = ++dchan->next_sequence;
*native_type = DRM_FENCE_TYPE_EXE;
BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_SET_REF, 1);
OUT_RING (*breadcrumb);
BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY, 1);
OUT_RING (NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE_LE_AWAKEN);
BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
OUT_RING (0);
FIRE_RING ();
return 0;
}
static void
nouveau_fence_perform_flush(struct drm_device *dev, uint32_t class)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct drm_fence_class_manager *fc = &dev->fm.fence_class[class];
uint32_t pending_types = 0;
DRM_DEBUG("class=%d\n", class);
pending_types = fc->pending_flush |
((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
if (pending_types) {
uint32_t sequence = NV_READ(NV03_FIFO_REGS(class) + 0x48);
drm_fence_handler(dev, class, sequence, pending_types, 0);
}
}
static void
nouveau_fence_poke_flush(struct drm_device *dev, uint32_t class)
{
struct drm_fence_manager *fm = &dev->fm;
unsigned long flags;
DRM_DEBUG("class=%d\n", class);
write_lock_irqsave(&fm->lock, flags);
nouveau_fence_perform_flush(dev, class);
write_unlock_irqrestore(&fm->lock, flags);
}
void
nouveau_fence_handler(struct drm_device *dev, int channel)
{
struct drm_fence_manager *fm = &dev->fm;
DRM_DEBUG("class=%d\n", channel);
write_lock(&fm->lock);
nouveau_fence_perform_flush(dev, channel);
write_unlock(&fm->lock);
}
struct drm_fence_driver nouveau_fence_driver = {
.num_classes = 8,
.wrap_diff = (1 << 30),
.flush_diff = (1 << 29),
.sequence_mask = 0xffffffffU,
.lazy_capable = 1,
.has_irq = nouveau_fence_has_irq,
.emit = nouveau_fence_emit,
.poke_flush = nouveau_fence_poke_flush
};
|
