74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
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#ifndef __PCI_H__
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#define __PCI_H__
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// ports for PCI config on IA-32(e)
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#define PCI_CONFIG_ADDRESS 0xCF8
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#define PCI_CONFIG_DATA 0xCFC
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#include "types.h"
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#include "Tier1/Util/CVector.h"
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namespace Alentours
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{
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// structure representing the configuration register internals
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typedef struct
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{
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u8 Zero : 2;
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u8 Register : 6;
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u8 Function : 3;
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u8 Device : 5;
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u8 Bus : 8;
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u8 Reserved : 7;
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u8 Enable : 1;
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} __attribute__((packed)) TPCIConfigAddressFields;
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typedef union
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{
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TPCIConfigAddressFields Fields;
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u32 Value;
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} TPCIConfigAddress;
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typedef struct
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{
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u16 VendorID;
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u16 ProductID;
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u16 Command;
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u16 Code;
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u8 Revision;
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u8 ProgInterface;
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u8 Subclass;
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u8 Class;
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u8 CacheLineSize;
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u8 LatencyTimer;
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u8 HeaderType : 7;
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u8 MultiFunction : 1;
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u8 BIST;
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} __attribute__((packed)) TPCIHeaderCommon;
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class CPCIDevice
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{
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private:
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u16 m_Bus, m_Device;
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TPCIHeaderCommon m_Header;
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public:
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CPCIDevice(u16 Bus, u16 Device);
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u32 ConfigRead(u16 Function, u16 Offset);
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};
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class CPCIManager
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{
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private:
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static cb::CVector<CPCIDevice> m_Devices;
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static u8 DevicePresent(u16 Bus, u16 Device);
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static u32 ConfigRead(u16 Bus, u16 Device, u16 Function, u16 Offset);
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public:
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static void Initialize(void);
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static u32 GetDeviceCount(void);
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static CPCIDevice *GetDeviceByIndex(void);
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static CPCIDevice *GetDeviceByAddress(u16 Bus, u16 Device);
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static void GetDeviceByIDPair(cb::CVector<CPCIDevice> &Devices, u16 Vendor, u16 Device);
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static void GetAllDevices(cb::CVector<CPCIDevice> &Devices);
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};
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};
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#endif
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