pci.c File Reference

#include <stdint.h>
#include <sys/kassert.h>
#include <sys/pci.h>
#include <machine/amd64.h>
#include <machine/amd64op.h>

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Macros
#define	PCI_PORT_ADDR   0xCF8
#define	PCI_PORT_DATABASE   0xCFC

Functions
static uint32_t	PCIGetAddr (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg)
uint8_t	PCICfgRead8 (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg)
uint16_t	PCICfgRead16 (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg)
uint32_t	PCICfgRead32 (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg)
void	PCICfgWrite8 (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg, uint8_t data)
void	PCICfgWrite16 (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg, uint16_t data)
void	PCICfgWrite32 (uint32_t bus, uint32_t slot, uint32_t func, uint32_t reg, uint32_t data)

Macro Definition Documentation

PCI_PORT_ADDR

#define PCI_PORT_ADDR   0xCF8

Definition at line 10 of file pci.c.

PCI_PORT_DATABASE

#define PCI_PORT_DATABASE   0xCFC

Definition at line 11 of file pci.c.

Function Documentation

PCICfgRead16()

uint16_t PCICfgRead16	(	uint32_t	bus,
		uint32_t	slot,
		uint32_t	func,
		uint32_t	reg
	)

Definition at line 31 of file pci.c.

{
    uint32_t addr = PCIGetAddr(bus, slot, func, reg);
    uint16_t port = PCI_PORT_DATABASE + (reg & 0x2);
 
    ASSERT((reg & 0x1) == 0);
 
    outl(PCI_PORT_ADDR, addr);
    return inw(port);
}

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PCICfgRead32()

uint32_t PCICfgRead32	(	uint32_t	bus,
		uint32_t	slot,
		uint32_t	func,
		uint32_t	reg
	)

Definition at line 43 of file pci.c.

{
    uint32_t addr = PCIGetAddr(bus, slot, func, reg);
    uint16_t port = PCI_PORT_DATABASE;
 
    ASSERT((reg & 0x3) == 0);
 
    outl(PCI_PORT_ADDR, addr);
    return inl(port);
}

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PCICfgRead8()

uint8_t PCICfgRead8	(	uint32_t	bus,
		uint32_t	slot,
		uint32_t	func,
		uint32_t	reg
	)

Definition at line 21 of file pci.c.

{
    uint32_t addr = PCIGetAddr(bus, slot, func, reg);
    uint16_t port = PCI_PORT_DATABASE + (reg & 0x3);
 
    outl(PCI_PORT_ADDR, addr);
    return inb(port);
}

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PCICfgWrite16()

void PCICfgWrite16	(	uint32_t	bus,
		uint32_t	slot,
		uint32_t	func,
		uint32_t	reg,
		uint16_t	data
	)

Definition at line 66 of file pci.c.

{
    uint32_t addr = PCIGetAddr(bus, slot, func, reg);
    uint16_t port = PCI_PORT_DATABASE + (reg & 0x3);
 
    outl(PCI_PORT_ADDR, addr);
    outw(port, data);
}

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PCICfgWrite32()

void PCICfgWrite32	(	uint32_t	bus,
		uint32_t	slot,
		uint32_t	func,
		uint32_t	reg,
		uint32_t	data
	)

Definition at line 77 of file pci.c.

{
    uint32_t addr = PCIGetAddr(bus, slot, func, reg);
    uint16_t port = PCI_PORT_DATABASE + (reg & 0x3);
 
    outl(PCI_PORT_ADDR, addr);
    outl(port, data);
}

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PCICfgWrite8()

void PCICfgWrite8	(	uint32_t	bus,
		uint32_t	slot,
		uint32_t	func,
		uint32_t	reg,
		uint8_t	data
	)

Definition at line 55 of file pci.c.

{
    uint32_t addr = PCIGetAddr(bus, slot, func, reg);
    uint16_t port = PCI_PORT_DATABASE + (reg & 0x3);
 
    outl(PCI_PORT_ADDR, addr);
    outb(port, data);
}

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PCIGetAddr()

static uint32_t PCIGetAddr ( uint32_t  bus, uint32_t  slot, uint32_t  func, uint32_t  reg  )

inlinestatic

Definition at line 14 of file pci.c.

{
    ASSERT(bus < 256 && slot < 64 && func < 8 && reg < 256);
    return (1 << 31) | (bus << 16) | (slot << 11) | (func << 8) | (reg & 0x00fc);
}

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