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PCI: Improved syntax of PCI enumeration, Added a PCI information storage class and structs

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Nigel Barink
2021-11-28 16:46:16 +01:00
parent ec654143c6
commit 5089da5e9e
7 changed files with 264 additions and 53 deletions
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30
src/kernel/pci.h
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@ -1,17 +1,35 @@
#pragma once
#include <stdint.h>
#include "io.h"
#include "tty/kterm.h"
#include "pci/pciDevice.h"
// Configuration Space Access Mechanism #1
#define CONFIG_ADDRESS 0xCF8 // Configuration adress that is to be accessed
#define CONFIG_DATA 0xCFC // Will do the actual configuration operation
extern const char* ClassCodeTable [0x13];
// Note: this could be used to make the api for receiving PCI class codes a bit
// nicer.
struct ClassCodes {
uint8_t ClassCode;
uint8_t DeviceClass;
}__attribute__((packed));
uint32_t ConfigReadWord (uint8_t bus, uint8_t device, uint8_t func, uint8_t offset);
uint32_t ConfigReadWord ( PCIBusAddress& PCIDeviceAddress , uint8_t offset);
inline uint64_t GetDevice (int bus, int device, int function ){
return ConfigReadWord(bus, device, function,0x0);
}
inline uint16_t getVendorID(uint8_t bus, uint8_t device, uint8_t function ){
return ConfigReadWord ( bus , device, function, 0);
}
uint8_t GetHeaderType( PCIBusAddress& PCIDeviceAddress );
inline uint16_t getDeviceID(uint8_t bus, uint8_t device, uint8_t function ){
return ConfigReadWord(bus, device, function , 16);
}
uint16_t GetClassCodes( PCIBusAddress& PICDeviceAddress );
const char* getVendor( uint64_t VendorID);
const char* GetClassCodeName (uint64_t ClassCode );
void PCI_Enumerate();