mirror of
https://github.com/morgan9e/macos-stats
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536 lines
20 KiB
Swift
536 lines
20 KiB
Swift
//
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// smc.swift
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// SMC
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//
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// Created by Serhiy Mytrovtsiy on 25/05/2021.
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// Using Swift 5.0.
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// Running on macOS 10.15.
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//
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// Copyright © 2021 Serhiy Mytrovtsiy. All rights reserved.
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//
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// swiftlint:disable file_length
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import Foundation
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import IOKit
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internal enum SMCDataType: String {
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case UI8 = "ui8 "
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case UI16 = "ui16"
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case UI32 = "ui32"
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case SP1E = "sp1e"
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case SP3C = "sp3c"
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case SP4B = "sp5b"
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case SP5A = "sp5a"
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case SP69 = "sp669"
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case SP78 = "sp78"
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case SP87 = "sp87"
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case SP96 = "sp96"
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case SPB4 = "spb4"
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case SPF0 = "spf0"
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case FLT = "flt "
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case FPE2 = "fpe2"
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case FP2E = "fp2e"
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case FDS = "{fds"
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}
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// swiftlint:disable identifier_name
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internal enum SMCKeys: UInt8 {
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case KERNEL_INDEX = 2
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case READ_BYTES = 5
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case WRITE_BYTES = 6
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case READ_INDEX = 8
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case READ_KEYINFO = 9
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case READ_PLIMIT = 11
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case READ_VERS = 12
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}
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public enum FanMode: Int {
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case automatic = 0
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case forced = 1
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}
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internal struct SMCKeyData_t {
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typealias SMCBytes_t = (UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
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UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
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UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
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UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
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UInt8, UInt8, UInt8, UInt8)
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struct vers_t {
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var major: CUnsignedChar = 0
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var minor: CUnsignedChar = 0
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var build: CUnsignedChar = 0
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var reserved: CUnsignedChar = 0
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var release: CUnsignedShort = 0
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}
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struct LimitData_t {
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var version: UInt16 = 0
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var length: UInt16 = 0
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var cpuPLimit: UInt32 = 0
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var gpuPLimit: UInt32 = 0
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var memPLimit: UInt32 = 0
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}
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struct keyInfo_t {
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var dataSize: IOByteCount = 0
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var dataType: UInt32 = 0
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var dataAttributes: UInt8 = 0
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}
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var key: UInt32 = 0
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var vers = vers_t()
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var pLimitData = LimitData_t()
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var keyInfo = keyInfo_t()
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var padding: UInt16 = 0
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var result: UInt8 = 0
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var status: UInt8 = 0
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var data8: UInt8 = 0
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var data32: UInt32 = 0
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var bytes: SMCBytes_t = (UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0))
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}
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internal struct SMCVal_t {
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var key: String
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var dataSize: UInt32 = 0
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var dataType: String = ""
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var bytes: [UInt8] = Array(repeating: 0, count: 32)
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init(_ key: String) {
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self.key = key
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}
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}
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extension FourCharCode {
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init(fromString str: String) {
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precondition(str.count == 4)
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self = str.utf8.reduce(0) { sum, character in
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return sum << 8 | UInt32(character)
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}
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}
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func toString() -> String {
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return String(describing: UnicodeScalar(self >> 24 & 0xff)!) +
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String(describing: UnicodeScalar(self >> 16 & 0xff)!) +
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String(describing: UnicodeScalar(self >> 8 & 0xff)!) +
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String(describing: UnicodeScalar(self & 0xff)!)
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}
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}
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extension UInt16 {
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init(bytes: (UInt8, UInt8)) {
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self = UInt16(bytes.0) << 8 | UInt16(bytes.1)
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}
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}
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// swiftlint:disable large_tuple
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extension UInt32 {
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init(bytes: (UInt8, UInt8, UInt8, UInt8)) {
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self = UInt32(bytes.0) << 24 | UInt32(bytes.1) << 16 | UInt32(bytes.2) << 8 | UInt32(bytes.3)
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}
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}
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extension Int {
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init(fromFPE2 bytes: (UInt8, UInt8)) {
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self = (Int(bytes.0) << 6) + (Int(bytes.1) >> 2)
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}
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}
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extension Float {
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init?(_ bytes: [UInt8]) {
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self = bytes.withUnsafeBytes {
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return $0.load(fromByteOffset: 0, as: Self.self)
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}
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}
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var bytes: [UInt8] {
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withUnsafeBytes(of: self, Array.init)
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}
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}
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public class SMC {
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public static let shared = SMC()
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private var conn: io_connect_t = 0
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public init() {
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var result: kern_return_t
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var iterator: io_iterator_t = 0
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let device: io_object_t
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let matchingDictionary: CFMutableDictionary = IOServiceMatching("AppleSMC")
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result = IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDictionary, &iterator)
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if result != kIOReturnSuccess {
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print("Error IOServiceGetMatchingServices(): " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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device = IOIteratorNext(iterator)
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IOObjectRelease(iterator)
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if device == 0 {
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print("Error IOIteratorNext(): " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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result = IOServiceOpen(device, mach_task_self_, 0, &conn)
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IOObjectRelease(device)
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if result != kIOReturnSuccess {
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print("Error IOServiceOpen(): " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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}
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deinit {
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let result = self.close()
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if result != kIOReturnSuccess {
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print("error close smc connection: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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}
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}
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public func close() -> kern_return_t {
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return IOServiceClose(conn)
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}
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public func getValue(_ key: String) -> Double? {
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var result: kern_return_t = 0
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var val: SMCVal_t = SMCVal_t(key)
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result = read(&val)
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if result != kIOReturnSuccess {
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print("Error read(\(key)): " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return nil
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}
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if val.dataSize > 0 {
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if val.bytes.first(where: { $0 != 0 }) == nil && val.key != "FS! " && val.key != "F0Md" && val.key != "F1Md" {
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return nil
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}
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switch val.dataType {
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case SMCDataType.UI8.rawValue:
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return Double(val.bytes[0])
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case SMCDataType.UI16.rawValue:
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return Double(UInt16(bytes: (val.bytes[0], val.bytes[1])))
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case SMCDataType.UI32.rawValue:
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return Double(UInt32(bytes: (val.bytes[0], val.bytes[1], val.bytes[2], val.bytes[3])))
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case SMCDataType.SP1E.rawValue:
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let result: Double = Double(UInt16(val.bytes[0]) * 256 + UInt16(val.bytes[1]))
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return Double(result / 16384)
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case SMCDataType.SP3C.rawValue:
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let result: Double = Double(UInt16(val.bytes[0]) * 256 + UInt16(val.bytes[1]))
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return Double(result / 4096)
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case SMCDataType.SP4B.rawValue:
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let result: Double = Double(UInt16(val.bytes[0]) * 256 + UInt16(val.bytes[1]))
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return Double(result / 2048)
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case SMCDataType.SP5A.rawValue:
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let result: Double = Double(UInt16(val.bytes[0]) * 256 + UInt16(val.bytes[1]))
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return Double(result / 1024)
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case SMCDataType.SP69.rawValue:
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let result: Double = Double(UInt16(val.bytes[0]) * 256 + UInt16(val.bytes[1]))
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return Double(result / 512)
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case SMCDataType.SP78.rawValue:
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let intValue: Double = Double(Int(val.bytes[0]) * 256 + Int(val.bytes[1]))
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return Double(intValue / 256)
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case SMCDataType.SP87.rawValue:
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let intValue: Double = Double(Int(val.bytes[0]) * 256 + Int(val.bytes[1]))
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return Double(intValue / 128)
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case SMCDataType.SP96.rawValue:
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let intValue: Double = Double(Int(val.bytes[0]) * 256 + Int(val.bytes[1]))
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return Double(intValue / 64)
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case SMCDataType.SPB4.rawValue:
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let intValue: Double = Double(Int(val.bytes[0]) * 256 + Int(val.bytes[1]))
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return Double(intValue / 16)
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case SMCDataType.SPF0.rawValue:
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let intValue: Double = Double(Int(val.bytes[0]) * 256 + Int(val.bytes[1]))
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return intValue
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case SMCDataType.FLT.rawValue:
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let value: Float? = Float(val.bytes)
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if value != nil {
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return Double(value!)
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}
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return nil
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case SMCDataType.FPE2.rawValue:
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return Double(Int(fromFPE2: (val.bytes[0], val.bytes[1])))
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default:
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return nil
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}
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}
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return nil
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}
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public func getStringValue(_ key: String) -> String? {
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var result: kern_return_t = 0
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var val: SMCVal_t = SMCVal_t(key)
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result = read(&val)
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if result != kIOReturnSuccess {
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print("Error read(): " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return nil
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}
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if val.dataSize > 0 {
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if val.bytes.first(where: { $0 != 0}) == nil {
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return nil
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}
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switch val.dataType {
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case SMCDataType.FDS.rawValue:
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let c1 = String(UnicodeScalar(val.bytes[4]))
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let c2 = String(UnicodeScalar(val.bytes[5]))
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let c3 = String(UnicodeScalar(val.bytes[6]))
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let c4 = String(UnicodeScalar(val.bytes[7]))
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let c5 = String(UnicodeScalar(val.bytes[8]))
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let c6 = String(UnicodeScalar(val.bytes[9]))
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let c7 = String(UnicodeScalar(val.bytes[10]))
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let c8 = String(UnicodeScalar(val.bytes[11]))
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let c9 = String(UnicodeScalar(val.bytes[12]))
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let c10 = String(UnicodeScalar(val.bytes[13]))
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let c11 = String(UnicodeScalar(val.bytes[14]))
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let c12 = String(UnicodeScalar(val.bytes[15]))
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return (c1 + c2 + c3 + c4 + c5 + c6 + c7 + c8 + c9 + c10 + c11 + c12).trimmingCharacters(in: .whitespaces)
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default:
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print("unsupported data type \(val.dataType) for key: \(key)")
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return nil
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}
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}
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return nil
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}
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public func getAllKeys() -> [String] {
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var list: [String] = []
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let keysNum: Double? = self.getValue("#KEY")
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if keysNum == nil {
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print("ERROR no keys count found")
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return list
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}
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var result: kern_return_t = 0
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var input: SMCKeyData_t = SMCKeyData_t()
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var output: SMCKeyData_t = SMCKeyData_t()
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for i in 0...Int(keysNum!) {
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input = SMCKeyData_t()
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output = SMCKeyData_t()
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input.data8 = SMCKeys.READ_INDEX.rawValue
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input.data32 = UInt32(i)
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result = call(SMCKeys.KERNEL_INDEX.rawValue, input: &input, output: &output)
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if result != kIOReturnSuccess {
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continue
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}
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list.append(output.key.toString())
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}
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return list
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}
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public func write(_ key: String, _ newValue: Int) -> kern_return_t {
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var value = SMCVal_t(key)
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value.dataSize = 2
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value.bytes = [UInt8(newValue >> 6), UInt8((newValue << 2) ^ ((newValue >> 6) << 8)), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0)]
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return write(value)
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}
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// MARK: - fans
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public func setFanMode(_ id: Int, mode: FanMode) {
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if self.getValue("F\(id)Md") != nil {
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var result: kern_return_t = 0
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var value = SMCVal_t("F\(id)Md")
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result = read(&value)
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if result != kIOReturnSuccess {
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print("Error read fan mode: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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value.bytes = [UInt8(mode.rawValue), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0)]
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result = write(value)
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if result != kIOReturnSuccess {
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print("Error write: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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}
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let fansMode = Int(self.getValue("FS! ") ?? 0)
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var newMode: UInt8 = 0
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if fansMode == 0 && id == 0 && mode == .forced {
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newMode = 1
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} else if fansMode == 0 && id == 1 && mode == .forced {
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newMode = 2
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} else if fansMode == 1 && id == 0 && mode == .automatic {
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newMode = 0
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} else if fansMode == 1 && id == 1 && mode == .forced {
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newMode = 3
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} else if fansMode == 2 && id == 1 && mode == .automatic {
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newMode = 0
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} else if fansMode == 2 && id == 0 && mode == .forced {
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newMode = 3
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} else if fansMode == 3 && id == 0 && mode == .automatic {
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newMode = 2
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} else if fansMode == 3 && id == 1 && mode == .automatic {
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newMode = 1
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}
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if fansMode == newMode {
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return
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}
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var result: kern_return_t = 0
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var value = SMCVal_t("FS! ")
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result = read(&value)
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if result != kIOReturnSuccess {
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print("Error read fan mode: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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value.bytes = [0, newMode, UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0), UInt8(0),
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UInt8(0), UInt8(0)]
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result = write(value)
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if result != kIOReturnSuccess {
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print("Error write: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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}
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public func setFanSpeed(_ id: Int, speed: Int) {
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let minSpeed = Int(self.getValue("F\(id)Mn") ?? 2500)
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let maxSpeed = Int(self.getValue("F\(id)Mx") ?? 4000)
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if speed < minSpeed {
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print("new fan speed (\(speed)) is less than minimum speed (\(minSpeed))")
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return
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} else if speed > maxSpeed {
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print("new fan speed (\(speed)) is more than maximum speed (\(maxSpeed))")
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return
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}
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var result: kern_return_t = 0
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var value = SMCVal_t("F\(id)Tg")
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result = read(&value)
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if result != kIOReturnSuccess {
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print("Error read fan value: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
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}
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if value.dataType == "flt " {
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let bytes = Float(speed).bytes
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value.bytes[0] = bytes[0]
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value.bytes[1] = bytes[1]
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value.bytes[2] = bytes[2]
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value.bytes[3] = bytes[3]
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} else if value.dataType == "fpe2" {
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value.bytes[0] = UInt8(speed >> 6)
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value.bytes[1] = UInt8((speed << 2) ^ ((speed >> 6) << 8))
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value.bytes[2] = UInt8(0)
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value.bytes[3] = UInt8(0)
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}
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result = write(value)
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if result != kIOReturnSuccess {
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print("Error write: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
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return
|
|
}
|
|
}
|
|
|
|
public func resetFans() {
|
|
var value = SMCVal_t("FS! ")
|
|
value.dataSize = 2
|
|
|
|
let result = write(value)
|
|
if result != kIOReturnSuccess {
|
|
print("Error write: " + (String(cString: mach_error_string(result), encoding: String.Encoding.ascii) ?? "unknown error"))
|
|
}
|
|
}
|
|
|
|
// MARK: - internal functions
|
|
|
|
private func read(_ value: UnsafeMutablePointer<SMCVal_t>) -> kern_return_t {
|
|
var result: kern_return_t = 0
|
|
var input = SMCKeyData_t()
|
|
var output = SMCKeyData_t()
|
|
|
|
input.key = FourCharCode(fromString: value.pointee.key)
|
|
input.data8 = SMCKeys.READ_KEYINFO.rawValue
|
|
|
|
result = call(SMCKeys.KERNEL_INDEX.rawValue, input: &input, output: &output)
|
|
if result != kIOReturnSuccess {
|
|
return result
|
|
}
|
|
|
|
value.pointee.dataSize = UInt32(output.keyInfo.dataSize)
|
|
value.pointee.dataType = output.keyInfo.dataType.toString()
|
|
input.keyInfo.dataSize = output.keyInfo.dataSize
|
|
input.data8 = SMCKeys.READ_BYTES.rawValue
|
|
|
|
result = call(SMCKeys.KERNEL_INDEX.rawValue, input: &input, output: &output)
|
|
if result != kIOReturnSuccess {
|
|
return result
|
|
}
|
|
|
|
memcpy(&value.pointee.bytes, &output.bytes, Int(value.pointee.dataSize))
|
|
|
|
return kIOReturnSuccess
|
|
}
|
|
|
|
private func write(_ value: SMCVal_t) -> kern_return_t {
|
|
var input = SMCKeyData_t()
|
|
var output = SMCKeyData_t()
|
|
|
|
input.key = FourCharCode(fromString: value.key)
|
|
input.data8 = SMCKeys.WRITE_BYTES.rawValue
|
|
input.keyInfo.dataSize = IOByteCount(value.dataSize)
|
|
input.bytes = (value.bytes[0], value.bytes[1], value.bytes[2], value.bytes[3], value.bytes[4], value.bytes[5],
|
|
value.bytes[6], value.bytes[7], value.bytes[8], value.bytes[9], value.bytes[10], value.bytes[11],
|
|
value.bytes[12], value.bytes[13], value.bytes[14], value.bytes[15], value.bytes[16], value.bytes[17],
|
|
value.bytes[18], value.bytes[19], value.bytes[20], value.bytes[21], value.bytes[22], value.bytes[23],
|
|
value.bytes[24], value.bytes[25], value.bytes[26], value.bytes[27], value.bytes[28], value.bytes[29],
|
|
value.bytes[30], value.bytes[31])
|
|
|
|
let result = self.call(SMCKeys.KERNEL_INDEX.rawValue, input: &input, output: &output)
|
|
if result != kIOReturnSuccess {
|
|
return result
|
|
}
|
|
|
|
return kIOReturnSuccess
|
|
}
|
|
|
|
private func call(_ index: UInt8, input: inout SMCKeyData_t, output: inout SMCKeyData_t) -> kern_return_t {
|
|
let inputSize = MemoryLayout<SMCKeyData_t>.stride
|
|
var outputSize = MemoryLayout<SMCKeyData_t>.stride
|
|
|
|
return IOConnectCallStructMethod(conn, UInt32(index), &input, inputSize, &output, &outputSize)
|
|
}
|
|
}
|