Stores information about a PCI device. More...

#include <pci.h>

Public Member Functions
string	get_type () const
	Get the type of the device.

Public Attributes
bool	has_port_base = false
	Whether the device has an IO port base address.

uint32_t	port_base = 0
	The IO port base address.

bool	has_memory_base = false
	Whether the device has a memory base address.

uint32_t	memory_base = 0
	The memory base address.

uint32_t	interrupt = 0
	The interrupt number the device uses to communicate with the CPU.

uint16_t	bus = 0
	The PCI bus the device is connected to.

uint16_t	device = 0
	The device number on the PCI bus.

uint16_t	function = 0
	The function number of the device.

uint16_t	vendor_id = 0
	The company's that made the device unique identifier.

uint16_t	device_id = 0
	The device's unique identifier.

uint8_t	class_id = 0
	The class type of the device.

uint8_t	subclass_id = 0
	The subclass type of the device.

uint8_t	interface_id = 0
	The interface type of the device.

uint8_t	revision = 0
	The device version number.

Detailed Description

Stores information about a PCI device.

Todo:: Should be a struct aswell

Definition at line 54 of file pci.h.

Member Function Documentation

◆ get_type()

string PCIDeviceDescriptor::get_type ( ) const

Get the type of the device.

Todo:: See wiki for more types to add

Returns: Type of the device as a string (or Unknown if the type is not known)

Definition at line 37 of file pci.cpp.

                                           {
 
    switch (class_id) {
        case 0x00:
            return (subclass_id == 0x01) ? "VGA" : "Legacy";
        case 0x01:
            switch (subclass_id) {
                case 0x01:
                    return "IDE interface";
                case 0x06:
                    return "SATA controller";
                default:
                    return "Storage";
            }
        case 0x02:
            return "Network";
        case 0x03:
            return "Display";
        case 0x04:
            switch (subclass_id) {
                case 0x00:
                    return "Video";
                case 0x01:
                case 0x03:
                    return "Audio";
                default:
                    return "Multimedia";
            }
        case 0x06:
            switch (subclass_id) {
                case 0x00:
                    return "Host bridge";
                case 0x01:
                    return "ISA bridge";
                case 0x04:
                    return "PCI bridge";
                default:
                    return "Bridge";
            }
        case 0x07:
            switch (subclass_id) {
                case 0x00:
                    return "Serial controller";
                case 0x80:
                    return "Communication controller";
            }
            break;
        case 0x0C:
            switch (subclass_id) {
                case 0x03:
                    return "USB";
                case 0x05:
                    return "System Management Bus";
            }
            break;
    }
    return "Unknown";
}

References class_id, and subclass_id.

Member Data Documentation

◆ bus

uint16_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::bus = 0

The PCI bus the device is connected to.

Definition at line 64 of file pci.h.

◆ class_id

uint8_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::class_id = 0

The class type of the device.

Definition at line 71 of file pci.h.

Referenced by get_type().

◆ device

uint16_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::device = 0

The device number on the PCI bus.

Definition at line 65 of file pci.h.

◆ device_id

uint16_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::device_id = 0

The device's unique identifier.

Definition at line 69 of file pci.h.

◆ function

uint16_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::function = 0

The function number of the device.

Definition at line 66 of file pci.h.

◆ has_memory_base

bool MaxOS::hardwarecommunication::PCIDeviceDescriptor::has_memory_base = false

Whether the device has a memory base address.

Definition at line 59 of file pci.h.

◆ has_port_base

bool MaxOS::hardwarecommunication::PCIDeviceDescriptor::has_port_base = false

Whether the device has an IO port base address.

Definition at line 56 of file pci.h.

◆ interface_id

uint8_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::interface_id = 0

The interface type of the device.

Definition at line 73 of file pci.h.

◆ interrupt

uint32_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::interrupt = 0

The interrupt number the device uses to communicate with the CPU.

Definition at line 62 of file pci.h.

◆ memory_base

uint32_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::memory_base = 0

The memory base address.

Definition at line 60 of file pci.h.

◆ port_base

uint32_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::port_base = 0

The IO port base address.

Definition at line 57 of file pci.h.

◆ revision

uint8_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::revision = 0

The device version number.

Definition at line 75 of file pci.h.

◆ subclass_id

uint8_t MaxOS::hardwarecommunication::PCIDeviceDescriptor::subclass_id = 0

The subclass type of the device.

Definition at line 72 of file pci.h.