424f06f84cab3756c471ee106708b8cc9d5a1bac
[linux-2.6.git] / include / linux / pci-acpi.h
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
52 extern acpi_status pci_osc_control_set(acpi_handle handle, u32 flags);
53 extern acpi_status __pci_osc_support_set(u32 flags, const char *hid);
54 int pci_acpi_osc_support(acpi_handle handle, u32 flags);
55 static inline acpi_status pci_osc_support_set(u32 flags)
56 {
57         return __pci_osc_support_set(flags, PCI_ROOT_HID_STRING);
58 }
59 static inline acpi_status pcie_osc_support_set(u32 flags)
60 {
61         return __pci_osc_support_set(flags, PCI_EXPRESS_ROOT_HID_STRING);
62 }
63 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
64 {
65         /* Find root host bridge */
66         while (pdev->bus->self)
67                 pdev = pdev->bus->self;
68
69         return acpi_get_pci_rootbridge_handle(pci_domain_nr(pdev->bus),
70                         pdev->bus->number);
71 }
72 #else
73 #if !defined(AE_ERROR)
74 typedef u32             acpi_status;
75 #define AE_ERROR        (acpi_status) (0x0001)
76 #endif    
77 static inline acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
78 {return AE_ERROR;}
79 static inline acpi_status pci_osc_support_set(u32 flags) {return AE_ERROR;} 
80 static inline acpi_status pcie_osc_support_set(u32 flags) {return AE_ERROR;}
81 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
82 { return NULL; }
83 #endif
84
85 #endif  /* _PCI_ACPI_H_ */