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contramread.c
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contramread.c
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#include <os_internal.h>
#include <rcp.h>
#include "controller.h"
#include "siint.h"
static void __osPackRamReadData(int channel, u16 address);
s32 __osContRamRead(OSMesgQueue *mq, int channel, u16 address, u8 *buffer)
{
s32 ret;
int i;
u8 *ptr;
__OSContRamReadFormat ramreadformat;
int retry;
ret = 0;
ptr = (u8 *)&__osPfsPifRam;
retry = 2;
__osSiGetAccess();
__osContLastCmd = CONT_CMD_READ_MEMPACK;
__osPackRamReadData(channel, address);
ret = __osSiRawStartDma(OS_WRITE, &__osPfsPifRam);
osRecvMesg(mq, NULL, OS_MESG_BLOCK);
do
{
ret = __osSiRawStartDma(OS_READ, &__osPfsPifRam);
osRecvMesg(mq, NULL, OS_MESG_BLOCK);
ptr = (u8 *)&__osPfsPifRam;
if (channel != 0)
{
for (i = 0; i < channel; i++)
{
ptr++;
}
}
ramreadformat = *(__OSContRamReadFormat *)ptr;
ret = CHNL_ERR(ramreadformat);
if (ret == 0)
{
u8 c;
c = __osContDataCrc((u8*)&ramreadformat.data);
if (c != ramreadformat.datacrc)
{
ret = __osPfsGetStatus(mq, channel);
if (ret != 0)
{
__osSiRelAccess();
return ret;
}
ret = PFS_ERR_CONTRFAIL;
}
else
{
for (i = 0; i < ARRLEN(ramreadformat.data); i++)
{
*buffer++ = ramreadformat.data[i];
}
}
}
else
{
ret = PFS_ERR_NOPACK;
}
if (ret != PFS_ERR_CONTRFAIL)
break;
} while (retry-- >= 0);
__osSiRelAccess();
return ret;
}
static void __osPackRamReadData(int channel, u16 address)
{
u8 *ptr;
__OSContRamReadFormat ramreadformat;
int i;
ptr = (u8 *)__osPfsPifRam.ramarray;
__osPfsPifRam.pifstatus = CONT_CMD_EXE;
ramreadformat.dummy = CONT_CMD_NOP;
ramreadformat.txsize = CONT_CMD_READ_MEMPACK_TX;
ramreadformat.rxsize = CONT_CMD_READ_MEMPACK_RX;
ramreadformat.cmd = CONT_CMD_READ_MEMPACK;
ramreadformat.address = (address << 0x5) | __osContAddressCrc(address);
ramreadformat.datacrc = CONT_CMD_NOP;
for (i = 0; i < ARRLEN(ramreadformat.data); i++)
{
ramreadformat.data[i] = CONT_CMD_NOP;
}
if (channel != 0)
{
for (i = 0; i < channel; i++)
{
*ptr++ = 0;
}
}
*(__OSContRamReadFormat *)ptr = ramreadformat;
ptr += sizeof(__OSContRamReadFormat);
ptr[0] = CONT_CMD_END;
}