Added PCI device detection and a start script.

targets/_any/include/drivers/pci.hpp

@@ -0,0 +1,253 @@
+
+#pragma once
+
+#if !defined(BAD_APPLE_OS_DRIVERS_PCI_HPP_INCLUDED)
+#define BAD_APPLE_OS_DRIVERS_PCI_HPP_INCLUDED
+
+#include <cstdint>
+#include <vector>
+
+namespace baos::pci
+{
+enum class BaseClass : std::uint8_t
+{
+    UNCLASSIFIED = 0x0,
+    MASS_STORAGE_CONTROLLER = 0x1,
+    NETWORK_CONTROLLER = 0x2,
+    DISPLAY_CONTROLLER = 0x3,
+    MULTIMEDIA_CONTROLLER = 0x4,
+    MEMORY_CONTROLLER = 0x5,
+    BRIDGE = 0x6,
+    SIMPLE_COMMUNICATION_CONTROLLER = 0x7,
+    BASE_SYSTEM_PERIPHERAL = 0x8,
+    INPUT_DEVICE_CONTROLLER = 0x9,
+    DOCKING_STATION = 0xA,
+    PROCESSOR = 0xB,
+    SERIAL_BUS_CONTROLLER = 0xC,
+    WIRELESS_CONTROLLER = 0xD,
+    INTELLIGENT_CONTROLLER = 0xE,
+    SATELLITE_COMMUNICATION_CONTROLLER = 0xF,
+    ENCRYPTION_CONTROLLER = 0x10,
+    SIGNAL_PROCESSING_CONTROLLER = 0x11,
+    PROCESSING_ACCELERATOR = 0x12,
+    NON_ESSENTIAL_INSTRUMENTATION = 0x13,
+    CO_PROCESSOR = 0x40,
+    UNASSIGNED = 0xFF
+};
+
+enum class SubClass : std::uint8_t
+{
+    // for 0x1 - Mass Storage Controller
+    IDE_CONTROLLER = 0x1,
+    FLOPPY_DISK_CONTROLLER = 0x2,
+    IPI_BUS_CONTROLLER = 0x3,
+    RAID_CONTROLLER = 0x4,
+    ATA_CONTROLLER = 0x5,
+    SERIAL_ATA_CONTROLLER = 0x6,
+    SERIAL_ATTACHED_SCSI_CONTROLLER = 0x7,
+    NON_VOLATILE_MEMORY_CONTROLLER = 0x8,
+    OTHER = 0x80,
+
+    // for 0x2 - Network Controller
+    ETHERNET_CONTROLLER = 0x0,
+    TOKEN_RING_CONTROLLER = 0x1,
+    FDDI_CONTROLLER = 0x2,
+    ATM_CONTROLLER = 0x3,
+    ISDN_CONTROLLER = 0x4,
+    WORLDFIP_CONTROLLER = 0x5,
+    PICMG_CONTROLLER = 0x6,
+    INFIBAND_CONTROLLER = 0x7,
+    FABRIC_CONTROLLER = 0x8,
+
+    // for 0x3 - Display Controller
+    VGA_COMPATIBLE_CONTROLLER = 0x0,
+    XGA_CONTROLLER = 0x1,
+    NOT_VGA_COMPATIBLE_3D_CONTROLLER = 0x2,
+
+    // for 0x4 - Multimedia Controller
+    MULTIMEDIA_VIDEO_CONTROLLER = 0x0,
+    MULTIMEDIA_AUDIO_CONTROLLER = 0x1,
+    COMPUTER_TELEPHONY_DEVICE = 0x2,
+    AUDIO_DEVICE = 0x3,
+
+    // for 0x5 - Memory Controller
+    RAM_CONTROLLER = 0x0,
+    FLASH_CONTROLLER = 0x1,
+
+    // for 0x6 - Bridge
+    HOST_BRIDGE = 0x0,
+    ISA_BRIDGE = 0x1,
+    EISA_BRIDGE = 0x2,
+    MCA_BRIDGE = 0x3,
+    PCI_TO_PCI_BRIDGE = 0x4,
+    PCMCIA_BRIDGE = 0x5,
+    NUBUS_BRIDGE = 0x6,
+    CARDBUS_BRIDGE = 0x7,
+    RACEWAY_BRIDGE = 0x8,
+    PCI_TO_PCI_BRIDGE_2 = 0x9,
+    INFINIBAND_TO_PCI_HOST_BRIDGE = 0xA,
+
+    // for 0x7 - Simple Communication Controller
+    SERIAL_CONTROLLER = 0x0,
+    PARALLEL_CONTROLLER = 0x1,
+    MULTIPORT_SERIAL_CONTROLLER = 0x2,
+    MODEM = 0x3,
+    IEEE488_CONTROLLER = 0x4,
+    SMART_CARD_CONTROLLER = 0x5,
+
+    // for 0x8 - Base System Peripheral
+    PIC = 0x1,
+    DMA_CONTROLLER = 0x1,
+    TIMER = 0x2,
+    RTC_CONTROLLER = 0x3,
+    PCI_HOT_PLUG_CONTROLLER = 0x4,
+    SD_HOST_CONTROLLER = 0x5,
+    IOMMU = 0x6,
+
+    // for 0x9 - Input Device Controller
+    KEYBOARD_CONTROLLER = 0x0,
+    DIGITIZER_PEN = 0x1,
+    MOUSE_CONTROLLER = 0x2,
+    SCANNER_CONTROLLER = 0x3,
+    GAMEPORT_CONTROLLER = 0x4,
+
+    // for 0xA - Docking Station
+    GENERIC = 0x0,
+
+    // for 0xB - Processor
+    _386 = 0x0,
+    _486 = 0x1,
+    PENTIUM = 0x2,
+    PENTIUM_PRO = 0x3,
+    ALPHA = 0x10,
+    POWERPC = 0x20,
+    MIPS = 0x30,
+    CO_PROCESSOR = 0x40,
+
+    // for 0xC - Serial Bus Controller
+    FIREWIRE_CONTROLLER = 0x0,
+    ACCESS_BUS_CONTROLLER = 0x1,
+    SSA = 0x2,
+    USB_CONTROLLER = 0x3,
+    FIBRE_CHANNEL = 0x4,
+    SMBUS_CONTROLLER = 0x5,
+    INFINIBAND_CONTROLLER = 0x6,
+    IPMI_INTERFACE = 0x7,
+    SERCOS_INTERFACE = 0x8,
+    CANBUS_CONTROLLER = 0x9,
+
+    // for 0xD - Wireless Controller
+    IRDA_COMPATIBLE_CONTROLLER = 0xD,
+    CONSUMER_IR_CONTROLLER = 0x1,
+    RF_CONTROLLER = 0x10,
+    BLUETOOTH_CONTROLLER = 0x11,
+    BROADBAND_CONTROLLER = 0x12,
+    ETHERNET_CONTROLLER_8021A = 0x20,
+    ETHERNET_CONTROLLER_8021B = 0x21,
+
+    // for 0xE - Intelligent Controller
+    I20 = 0x0,
+
+    // for 0xF - Satellite Communication Controller
+    SATELLITE_TV_CONTROLLER = 0x1,
+    SATELLITE_AUDIO_CONTROLLER = 0x2,
+    SATELLITE_VOICE_CONTROLLER = 0x3,
+    SATELLITE_DATA_CONTROLLER = 0x4,
+
+    // for 0x10 - Encryption Controller
+    NETWORK_AND_COMPUTING_EN_DECRYPTION = 0x0,
+    ENTERTAINMENT_EN_DECRYPTION = 0x10,
+
+    // for 0x11 - Signal Processing Controller
+    DPIO_MODULE = 0x0,
+    PERFORMANCE_COUNTER = 0x1,
+    COMMUNICATION_SYNCHRONIZER = 0x10,
+    SIGNAL_PROCESSING_MANAGEMENT = 0x20
+};
+
+enum class HeaderType : std::uint8_t
+{
+    GENERAL_DEVICE = 0x0,
+    PCI_TO_PCI_BRIDGE = 0x1,
+    PCI_TO_CARDBUS_BRIDGE = 0x2
+};
+
+struct Header
+{
+    std::uint8_t bus;
+    std::uint8_t device;
+    std::uint8_t function;
+    std::uint8_t pad_;
+
+    std::uint16_t vendorID;
+    std::uint16_t deviceID;
+    std::uint16_t command;
+    std::uint16_t status;
+    std::uint8_t revisionID;
+    std::uint8_t progIf;
+    SubClass subClass;
+    BaseClass baseClass;
+    std::uint8_t cacheLineSize;
+    std::uint8_t latencyTimer;
+    HeaderType headerType : 7;
+    bool multiFunction : 1;
+    std::uint8_t builtinSelfTest;
+} __attribute__((packed));
+
+struct GeneralDeviceHeader : Header
+{
+    std::uint32_t bar0;
+    std::uint32_t bar1;
+    std::uint32_t bar2;
+    std::uint32_t bar3;
+    std::uint32_t bar4;
+    std::uint32_t bar5;
+    std::uint32_t cardbusCISPointer;
+    std::uint16_t subsystemVendorID;
+    std::uint16_t subsystemID;
+    std::uint32_t expansionROMBaseAddress;
+    std::uint8_t capabilitiesPointer;
+    std::uint64_t reserved : 56;
+    std::uint8_t interruptLine;
+    std::uint8_t interruptPIN;
+    std::uint8_t minGrant;
+    std::uint8_t maxLatency;
+} __attribute__((packed));
+
+struct PCIToPCIBridgeHeader : Header
+{
+    std::uint32_t bar0;
+    std::uint32_t bar1;
+    std::uint8_t primaryBusNumber;
+    std::uint8_t secondaryBusNumber;
+    std::uint8_t subordinateBusNumber;
+    std::uint8_t secondaryLatencyTimer;
+    std::uint8_t ioBase;
+    std::uint8_t ioLimit;
+    std::uint16_t secondaryStatus;
+    std::uint16_t memoryBase;
+    std::uint16_t memoryLimit;
+    std::uint16_t prefetchableMemoryBase;
+    std::uint16_t prefetchableMemoryLimit;
+    std::uint32_t prefetchableBaseUpper32;
+    std::uint32_t prefetchableLimitUpper32;
+    std::uint16_t ioBaseUpper16;
+    std::uint16_t ioLimitUpper16;
+    std::uint8_t capbiliityPointer;
+    std::uint32_t reserved : 24;
+    std::uint32_t expansionRomBaseAddress;
+    std::uint8_t interruptLine;
+    std::uint8_t interruptPin;
+    std::uint16_t bridgeControl;
+} __attribute__((packed));
+
+[[nodiscard]] std::vector<Header> enumerateDevices() noexcept;
+[[nodiscard]] bool getGeneralDeviceHeader(std::uint8_t bus, std::uint8_t device, std::uint8_t function, GeneralDeviceHeader& outHeader) noexcept;
+
+[[nodiscard]] inline bool getGeneralDeviceHeader(const Header& header, GeneralDeviceHeader& outHeader) noexcept
+{
+    return getGeneralDeviceHeader(header.bus, header.device, header.function, outHeader);
+}
+}
+
+#endif // !defined(BAD_APPLE_OS_DRIVERS_PCI_HPP_INCLUDED)