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
|
#include <linux/vgaarb.h>
#include <linux/vga_switcheroo.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include "nouveau_drm.h"
#include "nouveau_acpi.h"
#include "nouveau_fbcon.h"
#include "nouveau_vga.h"
static unsigned int
nouveau_vga_set_decode(void *priv, bool state)
{
struct nvif_device *device = &nouveau_drm(priv)->device;
if (device->info.family == NV_DEVICE_INFO_V0_CURIE &&
device->info.chipset >= 0x4c)
nvif_wr32(device, 0x088060, state);
else
if (device->info.chipset >= 0x40)
nvif_wr32(device, 0x088054, state);
else
nvif_wr32(device, 0x001854, state);
if (state)
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
else
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
static void
nouveau_switcheroo_set_state(struct pci_dev *pdev,
enum vga_switcheroo_state state)
{
struct drm_device *dev = pci_get_drvdata(pdev);
if ((nouveau_is_optimus() || nouveau_is_v1_dsm()) && state == VGA_SWITCHEROO_OFF)
return;
if (state == VGA_SWITCHEROO_ON) {
printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
nouveau_pmops_resume(&pdev->dev);
drm_kms_helper_poll_enable(dev);
dev->switch_power_state = DRM_SWITCH_POWER_ON;
} else {
printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
drm_kms_helper_poll_disable(dev);
nouveau_switcheroo_optimus_dsm();
nouveau_pmops_suspend(&pdev->dev);
dev->switch_power_state = DRM_SWITCH_POWER_OFF;
}
}
static void
nouveau_switcheroo_reprobe(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
nouveau_fbcon_output_poll_changed(dev);
}
static bool
nouveau_switcheroo_can_switch(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
/*
* FIXME: open_count is protected by drm_global_mutex but that would lead to
* locking inversion with the driver load path. And the access here is
* completely racy anyway. So don't bother with locking for now.
*/
return dev->open_count == 0;
}
static const struct vga_switcheroo_client_ops
nouveau_switcheroo_ops = {
.set_gpu_state = nouveau_switcheroo_set_state,
.reprobe = nouveau_switcheroo_reprobe,
.can_switch = nouveau_switcheroo_can_switch,
};
void
nouveau_vga_init(struct nouveau_drm *drm)
{
struct drm_device *dev = drm->dev;
bool runtime = false;
/* only relevant for PCI devices */
if (!dev->pdev)
return;
vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
if (nouveau_runtime_pm == 1)
runtime = true;
if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
runtime = true;
vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, runtime);
if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
vga_switcheroo_init_domain_pm_ops(drm->dev->dev, &drm->vga_pm_domain);
}
void
nouveau_vga_fini(struct nouveau_drm *drm)
{
struct drm_device *dev = drm->dev;
bool runtime = false;
if (nouveau_runtime_pm == 1)
runtime = true;
if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
runtime = true;
vga_switcheroo_unregister_client(dev->pdev);
if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
vga_switcheroo_fini_domain_pm_ops(drm->dev->dev);
vga_client_register(dev->pdev, NULL, NULL, NULL);
}
void
nouveau_vga_lastclose(struct drm_device *dev)
{
vga_switcheroo_process_delayed_switch();
}
|
