pci.h File Reference

#include <types/nums.h>

Go to the source code of this file.

Macros
#define	PCI_INTERRUPT_LINE   0x3C

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

Variables
u32	bar0
u8	virtio_bus
u8	virtio_slot
u8	virtio_func
u8	virtio_irq

Macro Definition Documentation

PCI_INTERRUPT_LINE

#define PCI_INTERRUPT_LINE   0x3C

Definition at line 22 of file pci.h.

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

extern

Definition at line 30 of file scconfig.c.

virtio_bus

u8 virtio_bus

extern

Definition at line 26 of file scconfig.c.

virtio_func

u8 virtio_func

extern

Definition at line 28 of file scconfig.c.

virtio_irq

u8 virtio_irq

extern

Definition at line 25 of file scconfig.c.

virtio_slot

u8 virtio_slot

extern

Definition at line 27 of file scconfig.c.