#include <global.h>
#include <io/kio.h>

Macros
#define	PCI_CONFIG_ADDRESS 0xCF8
#define	PCI_CONFIG_DATA 0xCFC
#define	VIRTIO_REG(offset)

Functions
u32	PciConfigRead (u8 bus, u8 slot, u8 func, u8 offset)
	Reads a 32-bit value from PCI configuration space.
u32	FindVirtionetDev ()
	Search for VirtNet Device.

Variables
u8	virtio_irq = 0
u8	virtio_bus = 0
u8	virtio_slot = 0
u8	virtio_func = 0
u32	bar0 = 0

Macro Definition Documentation

◆ PCI_CONFIG_ADDRESS

#define PCI_CONFIG_ADDRESS 0xCF8

Definition at line 18 of file scconfig.c.

◆ PCI_CONFIG_DATA

#define PCI_CONFIG_DATA 0xCFC

Definition at line 19 of file scconfig.c.

◆ VIRTIO_REG

#define VIRTIO_REG ( offset )

Value:

(iob + (offset))

iob

u32 iob

Definition main.c:36

Definition at line 20 of file scconfig.c.

Function Documentation

◆ FindVirtionetDev()

u32 FindVirtionetDev ( )

Search for VirtNet Device.

Returns: NULL

Definition at line 59 of file scconfig.c.

◆ PciConfigRead()

u32 PciConfigRead	(	u8	bus,
		u8	slot,
		u8	func,
		u8	offset )

Reads a 32-bit value from PCI configuration space.

This function constructs a configuration address based on the given PCI bus, slot (device), function, and offset, and reads the corresponding 32-bit value from the PCI configuration space using I/O ports.

The offset must be aligned to a 4-byte boundary (i.e., bits 1 and 0 are masked out).

Parameters

bus	PCI bus number (0–255).
slot	PCI device number (0–31).
func	PCI function number (0–7).
offset	Offset into the configuration space (must be 4-byte aligned).

Returns: 32-bit value read from the PCI configuration register.

Definition at line 48 of file scconfig.c.

Variable Documentation

◆ bar0

u32 bar0 = 0

Definition at line 30 of file scconfig.c.

◆ virtio_bus

u8 virtio_bus = 0

Definition at line 26 of file scconfig.c.

◆ virtio_func

u8 virtio_func = 0

Definition at line 28 of file scconfig.c.

◆ virtio_irq

u8 virtio_irq = 0

Definition at line 25 of file scconfig.c.

◆ virtio_slot

u8 virtio_slot = 0

Definition at line 27 of file scconfig.c.

Macros

Functions

Variables