TwlIPL_commit-99/build/libraries/pxi/common/pxi_misc.c
2023-12-16 15:41:34 -05:00

353 lines
9.1 KiB
C

/*---------------------------------------------------------------------------*
Project: TwlFirm - library - pxi
File: pxi_misc.c
Copyright 2007 Nintendo. All rights reserved.
These coded instructions, statements, and computer programs contain
proprietary information of Nintendo of America Inc. and/or Nintendo
Company Ltd., and are protected by Federal copyright law. They may
not be disclosed to third parties or copied or duplicated in any form,
in whole or in part, without the prior written consent of Nintendo.
$Log: $
$NoKeywords: $
*---------------------------------------------------------------------------*/
#include <firm/os.h>
#include <twl/memorymap.h>
#include <firm/pxi.h>
static u16 FifoCtrlInit = 0;
/*********** function prototypes ******************/
static inline PXIFifoStatus PXIi_GetFromFifo(u32 *data_buf);
static inline PXIFifoStatus PXIi_SetToFifo(u32 data);
/*---------------------------------------------------------------------------*
Name: PXI_InitFifoFIRM
Description: initialize FIFO system for firm
Arguments: None.
Returns: None.
*---------------------------------------------------------------------------*/
void PXI_InitFifoFIRM(void)
{
OSIntrMode enabled;
enabled = OS_DisableInterrupts();
if (!FifoCtrlInit)
{
FifoCtrlInit = TRUE;
reg_PXI_FIFO_CNT =
(REG_PXI_FIFO_CNT_SEND_CL_MASK |
REG_PXI_FIFO_CNT_E_MASK | REG_PXI_FIFO_CNT_ERR_MASK);
#ifdef SDK_ARM9
PXI_SendIDByIntf( FIRM_PXI_ID_INIT_ARM9 );
PXI_WaitIDByIntf( FIRM_PXI_ID_INIT_ARM7 );
#else // SDK_ARM7
PXI_SendIDByIntf( FIRM_PXI_ID_INIT_ARM7 );
PXI_WaitIDByIntf( FIRM_PXI_ID_INIT_ARM9 );
#endif // SDK_ARM7
}
(void)OS_RestoreInterrupts(enabled);
}
/*---------------------------------------------------------------------------*
Name: PXI_NotifyID
Description: Send 4bit id to other processor
Arguments: id notifying id
Returns: None
*---------------------------------------------------------------------------*/
void PXI_NotifyID( u32 id )
{
PXI_SendIDByFifo( PXI_FIFO_TAG_SYSTEM, id );
}
/*---------------------------------------------------------------------------*
Name: PXI_WaitID
Description: Wait 4bit id from the other processor
Arguments: id waiting id
Returns: None
*---------------------------------------------------------------------------*/
void PXI_WaitID( u32 id )
{
PXI_WaitIDByFifo( PXI_FIFO_TAG_SYSTEM, id );
}
/*---------------------------------------------------------------------------*
Name: PXI_RecvID
Description: Receive 4bit id from the other processor
Arguments: None
Returns: id
*---------------------------------------------------------------------------*/
u8 PXI_RecvID( void )
{
u8 id;
while (PXI_RecvIDByFifo(PXI_FIFO_TAG_SYSTEM, &id) != PXI_FIFO_SUCCESS)
{
}
return id;
}
/*---------------------------------------------------------------------------*
Name: PXI_SendIDByIntf
Description: Send 4bit id to the other processor
Arguments: id sending id
Returns: None
*---------------------------------------------------------------------------*/
void PXI_SendIDByIntf( u32 id )
{
reg_PXI_INTF = (u16)(id << REG_PXI_INTF_SEND_SHIFT);
}
/*---------------------------------------------------------------------------*
Name: PXI_RecvIDByIntf
Description: Receive 4bit id from the other processor
Arguments: None
Returns: received id
*---------------------------------------------------------------------------*/
u32 PXI_RecvIDByIntf( void )
{
return (u32)((reg_PXI_INTF & REG_PXI_INTF_RECV_MASK) >> REG_PXI_INTF_RECV_SHIFT);
}
/*---------------------------------------------------------------------------*
Name: PXI_WaitIDByIntf
Description: Wait 4bit id from the other processor
Arguments: id waiting id
Returns: None
*---------------------------------------------------------------------------*/
void PXI_WaitIDByIntf( u32 id )
{
while (PXI_RecvIDByIntf() != id)
{
}
}
/*---------------------------------------------------------------------------*
Name: PXI_SendIDByFifo
Description: Send 32bit-word to another CPU via FIFO
Arguments:
Returns: None
*---------------------------------------------------------------------------*/
void PXI_SendIDByFifo(PXIFifoTag tag, u32 id)
{
static PXIFifoMessage fifomsg;
fifomsg.e.tag = tag;
fifomsg.e.data = id;
while ( PXIi_SetToFifo(fifomsg.raw) != PXI_FIFO_SUCCESS )
{
}
}
/*---------------------------------------------------------------------------*
Name: PXI_RecvIDByFifo
Description: Recv 32bit-word from another CPU via FIFO
Arguments:
Returns: if error occured, returns minus value
*---------------------------------------------------------------------------*/
PXIFifoStatus PXI_RecvIDByFifo(PXIFifoTag tag, void* buf)
{
static PXIFifoMessage fifomsg;
u8* p = buf;
while ( PXIi_GetFromFifo(&fifomsg.raw) != PXI_FIFO_SUCCESS )
{
}
if (fifomsg.e.tag != tag)
{
return PXI_FIFO_FAIL_RECV_ERR;
}
*p = (u8)fifomsg.e.data;
return PXI_FIFO_SUCCESS;
}
/*---------------------------------------------------------------------------*
Name: PXI_WaitIDByFifo
Description: Wait 32bit-word from another CPU via FIFO
Arguments: id waiting id
Returns: None
*---------------------------------------------------------------------------*/
void PXI_WaitIDByFifo(PXIFifoTag tag, u32 id)
{
u8 buf = (u8)id;
do
{
while (PXI_RecvIDByFifo(tag, &buf) != PXI_FIFO_SUCCESS)
{
}
}
while ( buf != id );
}
/*---------------------------------------------------------------------------*
Name: PXI_SendDataByFifo
Description: Send data to another CPU via FIFO
Arguments:
Returns: None
*---------------------------------------------------------------------------*/
void PXI_SendDataByFifo(PXIFifoTag tag, void* buf, int size)
{
static PXIFifoMessage fifomsg;
u32* p = buf;
int len = size/4;
int i;
fifomsg.e.tag = tag;
fifomsg.e.data = len;
while ( PXIi_SetToFifo(fifomsg.raw) != PXI_FIFO_SUCCESS )
{
}
for ( i=0; i<len; i++ )
{
while ( PXIi_SetToFifo(p[i]) != PXI_FIFO_SUCCESS )
{
}
}
}
/*---------------------------------------------------------------------------*
Name: PXI_RecvDataByFifo
Description: Recv data to another CPU via FIFO
Arguments:
Returns: if error occured, returns minus value
*---------------------------------------------------------------------------*/
PXIFifoStatus PXI_RecvDataByFifo(PXIFifoTag tag, void* buf, int max_size )
{
static PXIFifoMessage fifomsg;
u32* p = buf;
u32 len;
int i;
while ( PXIi_GetFromFifo(&fifomsg.raw) != PXI_FIFO_SUCCESS )
{
}
if (fifomsg.e.tag != tag)
{
return PXI_FIFO_FAIL_SEND_ERR;
}
len = fifomsg.e.data;
if (len > max_size/4)
{
return PXI_FIFO_FAIL_SEND_ERR;
}
for ( i=0; i<len; i++ )
{
while ( PXIi_GetFromFifo(&p[i]) != PXI_FIFO_SUCCESS )
{
}
}
return PXI_FIFO_SUCCESS;
}
//======================================================================
// Write Send-FIFO reg.
//======================================================================
static inline PXIFifoStatus PXIi_SetToFifo(u32 data)
{
OSIntrMode enabled;
if (reg_PXI_FIFO_CNT & REG_PXI_FIFO_CNT_ERR_MASK)
{
reg_PXI_FIFO_CNT |= (REG_PXI_FIFO_CNT_E_MASK | REG_PXI_FIFO_CNT_ERR_MASK);
return PXI_FIFO_FAIL_SEND_ERR;
}
enabled = OS_DisableInterrupts();
if (reg_PXI_FIFO_CNT & REG_PXI_FIFO_CNT_SEND_FULL_MASK)
{
(void)OS_RestoreInterrupts(enabled);
return PXI_FIFO_FAIL_SEND_FULL;
}
reg_PXI_SEND_FIFO = data;
(void)OS_RestoreInterrupts(enabled);
return PXI_FIFO_SUCCESS;
}
//======================================================================
// Read Send-FIFO reg.
//======================================================================
static inline PXIFifoStatus PXIi_GetFromFifo(u32 *data_buf)
{
OSIntrMode enabled;
if (reg_PXI_FIFO_CNT & REG_PXI_FIFO_CNT_ERR_MASK)
{
reg_PXI_FIFO_CNT |= (REG_PXI_FIFO_CNT_E_MASK | REG_PXI_FIFO_CNT_ERR_MASK);
return PXI_FIFO_FAIL_RECV_ERR;
}
enabled = OS_DisableInterrupts();
if (reg_PXI_FIFO_CNT & REG_PXI_FIFO_CNT_RECV_EMP_MASK)
{
(void)OS_RestoreInterrupts(enabled);
return PXI_FIFO_FAIL_RECV_EMPTY;
}
*data_buf = reg_PXI_RECV_FIFO;
(void)OS_RestoreInterrupts(enabled);
return PXI_FIFO_SUCCESS;
}