apbp.h File Reference

Host Port Interface (APBP aka HPI) More...

#include <teak/types.h>

Macros
#define	REG_APBP_ARM_STAT   (*(vu16 *)0x80D8)
	APBP ARM-side Status (mirror of ARM9 Port 400430Ch) (R)
#define	REG_APBP_CMD0   (*(vu16 *)0x80C2)
	APBP ARM-to-DSP Command 0 (R)
#define	REG_APBP_CMD1   (*(vu16 *)0x80C6)
	APBP ARM-to-DSP Command 1 (R)
#define	REG_APBP_CMD2   (*(vu16 *)0x80CA)
	APBP ARM-to-DSP Command 2 (R)
#define	REG_APBP_CONTROL   (*(vu16 *)0x80D4)
	APBP Control (R/W)
#define	REG_APBP_PCLEAR   (*(vu16 *)0x80D0)
	APBP ARM-to-DSP Semaphore Ack Flags (W?)
#define	REG_APBP_PMASK   (*(vu16 *)0x80CE)
	APBP ARM-to-DSP Semaphore Interrupt Mask (R/W)
#define	REG_APBP_PSEM   (*(vu16 *)0x80CC)
	APBP DSP-to-ARM Semaphore Set Flags (R/W)
#define	REG_APBP_REP0   (*(vu16 *)0x80C0)
	APBP DSP-to-ARM Reply 0 (R/W)
#define	REG_APBP_REP1   (*(vu16 *)0x80C4)
	APBP DSP-to-ARM Reply 1 (R/W)
#define	REG_APBP_REP2   (*(vu16 *)0x80C8)
	APBP DSP-to-ARM Reply 2 (R/W)
#define	REG_APBP_SEM   (*(vu16 *)0x80D2)
	APBP ARM-to-DSP Semaphore Get Flags (R)
#define	REG_APBP_STAT   (*(vu16 *)0x80D6)
	APBP DSP-side Status (R)

Functions
static void	apbpAckSemaphore (uint16_t mask)
	Clears semaphore bits that the ARM9 has set in REG_DSP_PSEM.
static void	apbpClearSemaphore (uint16_t mask)
	Clears semaphore flags to be seen by the ARM9 in REG_DSP_SEM.
static uint16_t	apbpGetSemaphore (void)
	Gets semaphore bits that the ARM9 has set in REG_DSP_PSEM.
uint16_t	apbpReceiveData (uint16_t id)
	Reads data preent in one of the REG_APBP_REPx registers.
void	apbpSendData (uint16_t id, uint16_t data)
	Sends data using the REG_APBP_CMDx registers.
static void	apbpSetSemaphore (uint16_t mask)
	Sets semaphore flags to be seen by the ARM9 in REG_DSP_SEM.
static void	apbpSetSemaphoreIrqMask (uint16_t mask)
	Masks interrupts caused by ARM-to-DSP semaphores.

Detailed Description

Host Port Interface (APBP aka HPI)

Function Documentation

apbpAckSemaphore()

static void apbpAckSemaphore ( uint16_t  mask )

inlinestatic

Clears semaphore bits that the ARM9 has set in REG_DSP_PSEM.

Parameters

mask	Bits to clear.

apbpClearSemaphore()

static void apbpClearSemaphore ( uint16_t  mask )

inlinestatic

Clears semaphore flags to be seen by the ARM9 in REG_DSP_SEM.

Parameters

mask	Bits to clear.

apbpGetSemaphore()

static uint16_t apbpGetSemaphore ( void  )

inlinestatic

Gets semaphore bits that the ARM9 has set in REG_DSP_PSEM.

Returns

Bits set by the ARM9 to 1.

apbpReceiveData()

uint16_t apbpReceiveData

(

uint16_t

id

)

Reads data preent in one of the REG_APBP_REPx registers.

If there isn't any value in the register it will wait until the ARM9 has sent any value.

Parameters

id	0 to 2 for REG_APBP_REP0 to REG_APBP_REP2.

Returns

Returns the data in that register.

apbpSendData()

void apbpSendData	(	uint16_t	id,
		uint16_t	data
	)

Sends data using the REG_APBP_CMDx registers.

If there is alredy a value in that register it will wait until the ARM9 has read it.

Parameters

id	0 to 2 for REG_APBP_CMD0 to REG_APBP_CMD2.
data	Data to write.

apbpSetSemaphore()

static void apbpSetSemaphore ( uint16_t  mask )

inlinestatic

Sets semaphore flags to be seen by the ARM9 in REG_DSP_SEM.

Parameters

mask	Bits to set on top of the currently set bits.

apbpSetSemaphoreIrqMask()

static void apbpSetSemaphoreIrqMask ( uint16_t  mask )

inlinestatic

Masks interrupts caused by ARM-to-DSP semaphores.

Parameters

mask	Bits set to 1 will disable interrupts for that semaphore.