Elan

VideoLogic Elan T&L coprocessor (NAOMI 2) More...

Topics
	IFCTL bits
	Fields of ELAN_REG_IFCTL
	Register offsets
	Offsets from ELAN_BASE

Files
file	elan.h
	VideoLogic Elan T&L coprocessor (NAOMI 2).

Macros
#define	ELAN_BASE   0xa8800000
	Elan register block, P2.
#define	ELAN_MAGIC   0xe1ad0000
	Value of ELAN_REG_ID on a present Elan.
#define	ELAN_RAM_BASE_P0   0x0a000000
	Elan local RAM, P0.
#define	ELAN_RAM_BASE   (MEM_AREA_P2_BASE | ELAN_RAM_BASE_P0)
	Elan local RAM, P2.
#define	ELAN_RAM_SIZE   (32 * 1024 * 1024)
	Elan local RAM size in bytes.
#define	ELAN_GET(reg)
	Read an Elan register.
#define	ELAN_SET(reg, value)
	Write an Elan register.

Functions
bool	elan_present (void)
	True when Elan is present (NAOMI 2).
uint32_t	elan_revision (void)
	Elan revision register, or 0 if absent.
uint32_t	elan_ifctl_get (void)
	Current IFCTL value, or 0 if Elan is absent.
void	elan_ifctl_set (uint32_t value)
	Write IFCTL.
void	elan_pvr2_enable (void)
	Enable CLXB address windows (IFCTL bit 2, never bit 0).
void	elan_pvr2_disable (void)
	Disable CLXB address windows (IFCTL = 0).
bool	elan_pvr2_enabled (void)
	True if IFCTL bit 2 is set.

Detailed Description

VideoLogic Elan T&L coprocessor (NAOMI 2)

Macro Definition Documentation

ELAN_BASE

#define ELAN_BASE   0xa8800000

Elan register block, P2.

ELAN_GET

#define ELAN_GET

(

reg

)

Value:

(*(volatile uint32_t *)(ELAN_BASE + (reg)))

Read an Elan register.

ELAN_MAGIC

#define ELAN_MAGIC   0xe1ad0000

Value of ELAN_REG_ID on a present Elan.

ELAN_RAM_BASE

#define ELAN_RAM_BASE   (MEM_AREA_P2_BASE | ELAN_RAM_BASE_P0)

Elan local RAM, P2.

ELAN_RAM_BASE_P0

#define ELAN_RAM_BASE_P0   0x0a000000

Elan local RAM, P0.

ELAN_RAM_SIZE

#define ELAN_RAM_SIZE   (32 * 1024 * 1024)

Elan local RAM size in bytes.

ELAN_SET

#define ELAN_SET	(		reg,
			value )

Value:

(ELAN_GET(reg) = (value))

Write an Elan register.

Function Documentation

elan_ifctl_get()

uint32_t elan_ifctl_get

(

void

)

Current IFCTL value, or 0 if Elan is absent.

elan_ifctl_set()

void elan_ifctl_set

(

uint32_t

value

)

Write IFCTL.

Warning

Bit 0 (ELAN_IFCTL_CS1_BCAST) broadcasts CS1 to both GPUs. Leave it clear unless you are duplicating textures on purpose.

elan_present()

bool elan_present

(

void

)

True when Elan is present (NAOMI 2).

elan_pvr2_disable()

void elan_pvr2_disable

(

void

)

Disable CLXB address windows (IFCTL = 0).

elan_pvr2_enable()

void elan_pvr2_enable

(

void

)

Enable CLXB address windows (IFCTL bit 2, never bit 0).

elan_pvr2_enabled()

bool elan_pvr2_enabled

(

void

)

True if IFCTL bit 2 is set.

elan_revision()

uint32_t elan_revision

(

void

)

Elan revision register, or 0 if absent.