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Linux kernel mirror (for testing)
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linux
1/*
2 * File pci-acpi.h
3 *
4 * Copyright (C) 2004 Intel
5 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
6 */
7
8#ifndef _PCI_ACPI_H_
9#define _PCI_ACPI_H_
10
11#include <linux/acpi.h>
12
13#define OSC_QUERY_TYPE 0
14#define OSC_SUPPORT_TYPE 1
15#define OSC_CONTROL_TYPE 2
16#define OSC_SUPPORT_MASKS 0x1f
17
18/*
19 * _OSC DW0 Definition
20 */
21#define OSC_QUERY_ENABLE 1
22#define OSC_REQUEST_ERROR 2
23#define OSC_INVALID_UUID_ERROR 4
24#define OSC_INVALID_REVISION_ERROR 8
25#define OSC_CAPABILITIES_MASK_ERROR 16
26
27/*
28 * _OSC DW1 Definition (OS Support Fields)
29 */
30#define OSC_EXT_PCI_CONFIG_SUPPORT 1
31#define OSC_ACTIVE_STATE_PWR_SUPPORT 2
32#define OSC_CLOCK_PWR_CAPABILITY_SUPPORT 4
33#define OSC_PCI_SEGMENT_GROUPS_SUPPORT 8
34#define OSC_MSI_SUPPORT 16
35
36/*
37 * _OSC DW1 Definition (OS Control Fields)
38 */
39#define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL 1
40#define OSC_SHPC_NATIVE_HP_CONTROL 2
41#define OSC_PCI_EXPRESS_PME_CONTROL 4
42#define OSC_PCI_EXPRESS_AER_CONTROL 8
43#define OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL 16
44
45#define OSC_CONTROL_MASKS (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL | \
46 OSC_SHPC_NATIVE_HP_CONTROL | \
47 OSC_PCI_EXPRESS_PME_CONTROL | \
48 OSC_PCI_EXPRESS_AER_CONTROL | \
49 OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL)
50
51#ifdef CONFIG_ACPI
52extern acpi_status pci_osc_control_set(acpi_handle handle, u32 flags);
53int pci_acpi_osc_support(acpi_handle handle, u32 flags);
54static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
55{
56 /* Find root host bridge */
57 while (pdev->bus->self)
58 pdev = pdev->bus->self;
59
60 return acpi_get_pci_rootbridge_handle(pci_domain_nr(pdev->bus),
61 pdev->bus->number);
62}
63
64static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
65{
66 int seg = pci_domain_nr(pbus), busnr = pbus->number;
67 struct pci_dev *bridge = pbus->self;
68 if (bridge)
69 return DEVICE_ACPI_HANDLE(&(bridge->dev));
70 return acpi_get_pci_rootbridge_handle(seg, busnr);
71}
72#else
73#if !defined(AE_ERROR)
74typedef u32 acpi_status;
75#define AE_ERROR (acpi_status) (0x0001)
76#endif
77static inline acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
78{return AE_ERROR;}
79static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
80{ return NULL; }
81#endif
82
83#endif /* _PCI_ACPI_H_ */