moel@196: /*
moel@196:  
moel@344:   This Source Code Form is subject to the terms of the Mozilla Public
moel@344:   License, v. 2.0. If a copy of the MPL was not distributed with this
moel@344:   file, You can obtain one at http://mozilla.org/MPL/2.0/.
moel@196:  
moel@344:   Copyright (C) 2009-2010 Michael Möller <mmoeller@openhardwaremonitor.org>
moel@344: 	
moel@196: */
moel@196: 
moel@196: namespace OpenHardwareMonitor.Hardware.CPU {
moel@196: 
moel@196:   internal abstract class AMDCPU : GenericCPU {
moel@196: 
moel@196:     private const byte PCI_BUS = 0;
moel@271:     private const byte PCI_BASE_DEVICE = 0x18;
moel@196:     private const byte DEVICE_VENDOR_ID_REGISTER = 0;
moel@196:     private const ushort AMD_VENDOR_ID = 0x1022;
moel@196: 
moel@196:     public AMDCPU(int processorIndex, CPUID[][] cpuid, ISettings settings)
moel@196:       : base(processorIndex, cpuid, settings) { }
moel@196: 
moel@196:     protected uint GetPciAddress(byte function, ushort deviceId) {
moel@197:       
moel@197:       // assemble the pci address
moel@236:       uint address = Ring0.GetPciAddress(PCI_BUS,
moel@196:         (byte)(PCI_BASE_DEVICE + processorIndex), function);
moel@196: 
moel@197:       // verify that we have the correct bus, device and function
moel@196:       uint deviceVendor;
moel@236:       if (!Ring0.ReadPciConfig(
moel@196:         address, DEVICE_VENDOR_ID_REGISTER, out deviceVendor))
moel@236:         return Ring0.InvalidPciAddress;
moel@197:       
moel@196:       if (deviceVendor != (deviceId << 16 | AMD_VENDOR_ID))
moel@236:         return Ring0.InvalidPciAddress;
moel@196: 
moel@196:       return address;
moel@196:     }
moel@196: 
moel@196:   }
moel@196: }