1 /* 2 * File pci-acpi.h 3 * 4 * Copyright (C) 2004 Intel 5 * Copyright (C) Tom Long Nguyen ([email protected]) 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 int pci_acpi_osc_support(acpi_handle handle, u32 flags); 54 static 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 64 static 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) 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_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) 80 { return NULL; } 81 #endif 82 83 #endif /* _PCI_ACPI_H_ */ 84