Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
77145f1c BS |
2 | #include <linux/vgaarb.h> |
3 | #include <linux/vga_switcheroo.h> | |
4 | ||
612a9aab LT |
5 | #include <drm/drmP.h> |
6 | #include <drm/drm_crtc_helper.h> | |
77145f1c | 7 | |
4dc28134 | 8 | #include "nouveau_drv.h" |
77145f1c BS |
9 | #include "nouveau_acpi.h" |
10 | #include "nouveau_fbcon.h" | |
5b8a43ae | 11 | #include "nouveau_vga.h" |
77145f1c BS |
12 | |
13 | static unsigned int | |
14 | nouveau_vga_set_decode(void *priv, bool state) | |
15 | { | |
a01ca78c | 16 | struct nouveau_drm *drm = nouveau_drm(priv); |
1167c6bc | 17 | struct nvif_object *device = &drm->client.device.object; |
77145f1c | 18 | |
1167c6bc BS |
19 | if (drm->client.device.info.family == NV_DEVICE_INFO_V0_CURIE && |
20 | drm->client.device.info.chipset >= 0x4c) | |
db2bec18 | 21 | nvif_wr32(device, 0x088060, state); |
77145f1c | 22 | else |
1167c6bc | 23 | if (drm->client.device.info.chipset >= 0x40) |
db2bec18 BS |
24 | nvif_wr32(device, 0x088054, state); |
25 | else | |
26 | nvif_wr32(device, 0x001854, state); | |
77145f1c BS |
27 | |
28 | if (state) | |
29 | return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | | |
30 | VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; | |
31 | else | |
32 | return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; | |
33 | } | |
34 | ||
35 | static void | |
36 | nouveau_switcheroo_set_state(struct pci_dev *pdev, | |
37 | enum vga_switcheroo_state state) | |
38 | { | |
39 | struct drm_device *dev = pci_get_drvdata(pdev); | |
77145f1c | 40 | |
5addcf0a DA |
41 | if ((nouveau_is_optimus() || nouveau_is_v1_dsm()) && state == VGA_SWITCHEROO_OFF) |
42 | return; | |
43 | ||
77145f1c | 44 | if (state == VGA_SWITCHEROO_ON) { |
8dfe162a | 45 | pr_err("VGA switcheroo: switched nouveau on\n"); |
77145f1c | 46 | dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; |
2d8b9ccb | 47 | nouveau_pmops_resume(&pdev->dev); |
77145f1c BS |
48 | drm_kms_helper_poll_enable(dev); |
49 | dev->switch_power_state = DRM_SWITCH_POWER_ON; | |
50 | } else { | |
8dfe162a | 51 | pr_err("VGA switcheroo: switched nouveau off\n"); |
77145f1c BS |
52 | dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; |
53 | drm_kms_helper_poll_disable(dev); | |
54 | nouveau_switcheroo_optimus_dsm(); | |
2d8b9ccb | 55 | nouveau_pmops_suspend(&pdev->dev); |
77145f1c BS |
56 | dev->switch_power_state = DRM_SWITCH_POWER_OFF; |
57 | } | |
58 | } | |
59 | ||
60 | static void | |
61 | nouveau_switcheroo_reprobe(struct pci_dev *pdev) | |
62 | { | |
63 | struct drm_device *dev = pci_get_drvdata(pdev); | |
64 | nouveau_fbcon_output_poll_changed(dev); | |
65 | } | |
66 | ||
67 | static bool | |
68 | nouveau_switcheroo_can_switch(struct pci_dev *pdev) | |
69 | { | |
70 | struct drm_device *dev = pci_get_drvdata(pdev); | |
77145f1c | 71 | |
fc8fd40e DV |
72 | /* |
73 | * FIXME: open_count is protected by drm_global_mutex but that would lead to | |
74 | * locking inversion with the driver load path. And the access here is | |
75 | * completely racy anyway. So don't bother with locking for now. | |
76 | */ | |
77 | return dev->open_count == 0; | |
77145f1c BS |
78 | } |
79 | ||
80 | static const struct vga_switcheroo_client_ops | |
81 | nouveau_switcheroo_ops = { | |
82 | .set_gpu_state = nouveau_switcheroo_set_state, | |
83 | .reprobe = nouveau_switcheroo_reprobe, | |
84 | .can_switch = nouveau_switcheroo_can_switch, | |
85 | }; | |
86 | ||
87 | void | |
88 | nouveau_vga_init(struct nouveau_drm *drm) | |
89 | { | |
90 | struct drm_device *dev = drm->dev; | |
321f5c5f | 91 | bool runtime = nouveau_pmops_runtime(); |
420b9469 AC |
92 | |
93 | /* only relevant for PCI devices */ | |
94 | if (!dev->pdev) | |
95 | return; | |
96 | ||
77145f1c | 97 | vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode); |
5addcf0a | 98 | |
1d3c1103 LW |
99 | /* don't register Thunderbolt eGPU with vga_switcheroo */ |
100 | if (pci_is_thunderbolt_attached(dev->pdev)) | |
101 | return; | |
102 | ||
5addcf0a DA |
103 | vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, runtime); |
104 | ||
105 | if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus()) | |
106 | vga_switcheroo_init_domain_pm_ops(drm->dev->dev, &drm->vga_pm_domain); | |
77145f1c BS |
107 | } |
108 | ||
109 | void | |
110 | nouveau_vga_fini(struct nouveau_drm *drm) | |
111 | { | |
112 | struct drm_device *dev = drm->dev; | |
321f5c5f | 113 | bool runtime = nouveau_pmops_runtime(); |
53beaa01 | 114 | |
876ea7be MP |
115 | /* only relevant for PCI devices */ |
116 | if (!dev->pdev) | |
117 | return; | |
118 | ||
1d3c1103 LW |
119 | vga_client_register(dev->pdev, NULL, NULL, NULL); |
120 | ||
121 | if (pci_is_thunderbolt_attached(dev->pdev)) | |
122 | return; | |
123 | ||
77145f1c | 124 | vga_switcheroo_unregister_client(dev->pdev); |
53beaa01 AD |
125 | if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus()) |
126 | vga_switcheroo_fini_domain_pm_ops(drm->dev->dev); | |
77145f1c BS |
127 | } |
128 | ||
129 | ||
130 | void | |
131 | nouveau_vga_lastclose(struct drm_device *dev) | |
132 | { | |
133 | vga_switcheroo_process_delayed_switch(); | |
134 | } |