38 lines
1.4 KiB
C#
38 lines
1.4 KiB
C#
// Mozilla Public License 2.0
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// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Copyright (C) LibreHardwareMonitor and Contributors
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// All Rights Reserved
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namespace LibreHardwareMonitor.Hardware.CPU
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{
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internal abstract class AmdCpu : GenericCpu
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{
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protected AmdCpu(int processorIndex, CpuId[][] cpuId, ISettings settings) : base(processorIndex, cpuId, settings)
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{ }
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protected uint GetPciAddress(byte function, ushort deviceId)
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{
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// assemble the pci address
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uint address = Ring0.GetPciAddress(PCI_BUS, (byte)(PCI_BASE_DEVICE + _processorIndex), function);
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// verify that we have the correct bus, device and function
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if (!Ring0.ReadPciConfig(address, DEVICE_VENDOR_ID_REGISTER, out uint deviceVendor))
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return Interop.Ring0.INVALID_PCI_ADDRESS;
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if (deviceVendor != (deviceId << 16 | AMD_VENDOR_ID))
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return Interop.Ring0.INVALID_PCI_ADDRESS;
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return address;
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}
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// ReSharper disable InconsistentNaming
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private const ushort AMD_VENDOR_ID = 0x1022;
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private const byte DEVICE_VENDOR_ID_REGISTER = 0;
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private const byte PCI_BASE_DEVICE = 0x18;
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private const byte PCI_BUS = 0;
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// ReSharper restore InconsistentNaming
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}
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}
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