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
|
/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* 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 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 HOLDER(S) OR AUTHOR(S) 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.
*
* Authors: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon_reg.h"
#include "radeon.h"
#include "atom.h"
irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *) arg;
struct radeon_device *rdev = dev->dev_private;
return radeon_irq_process(rdev);
}
void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
unsigned i;
/* Disable *all* interrupts */
rdev->irq.sw_int = false;
for (i = 0; i < 2; i++) {
rdev->irq.crtc_vblank_int[i] = false;
}
radeon_irq_set(rdev);
/* Clear bits */
radeon_irq_process(rdev);
}
int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
dev->max_vblank_count = 0x001fffff;
rdev->irq.sw_int = true;
radeon_irq_set(rdev);
return 0;
}
void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
unsigned i;
if (rdev == NULL) {
return;
}
/* Disable *all* interrupts */
rdev->irq.sw_int = false;
for (i = 0; i < 2; i++) {
rdev->irq.crtc_vblank_int[i] = false;
}
radeon_irq_set(rdev);
}
int radeon_irq_kms_init(struct radeon_device *rdev)
{
int r = 0;
int num_crtc = 2;
if (rdev->flags & RADEON_SINGLE_CRTC)
num_crtc = 1;
spin_lock_init(&rdev->irq.sw_lock);
r = drm_vblank_init(rdev->ddev, num_crtc);
if (r) {
return r;
}
/* enable msi */
rdev->msi_enabled = 0;
/* MSIs don't seem to work on my rs780;
* not sure about rs880 or other rs780s.
* Needs more investigation.
*/
if ((rdev->family >= CHIP_RV380) &&
(rdev->family != CHIP_RS780) &&
(rdev->family != CHIP_RS880)) {
int ret = pci_enable_msi(rdev->pdev);
if (!ret) {
rdev->msi_enabled = 1;
DRM_INFO("radeon: using MSI.\n");
}
}
drm_irq_install(rdev->ddev);
rdev->irq.installed = true;
DRM_INFO("radeon: irq initialized.\n");
return 0;
}
void radeon_irq_kms_fini(struct radeon_device *rdev)
{
if (rdev->irq.installed) {
rdev->irq.installed = false;
drm_irq_uninstall(rdev->ddev);
if (rdev->msi_enabled)
pci_disable_msi(rdev->pdev);
}
}
void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev)
{
unsigned long irqflags;
spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) {
rdev->irq.sw_int = true;
radeon_irq_set(rdev);
}
spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
}
void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev)
{
unsigned long irqflags;
spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0);
if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) {
rdev->irq.sw_int = false;
radeon_irq_set(rdev);
}
spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
}
|
