sysreadwrite.c
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#include <ultra64.h>
#ifndef _LONGCMD
#include <leo.h>
#else
#include <leosp.h>
#endif
extern s32 __leoActive;
s32 LeoSysReadWrite(LEOCmd *cmdBlock, s32 direction,
s32 LBA, void *vAddr, u32 nLBAs, OSMesgQueue *mq)
{
/*
* Check for existence of Leo Manager
*/
if (!__leoActive) {
return(-1);
}
/*
* Fill up command block
*/
if (direction == OS_READ)
cmdBlock->header.command = LEO_COMMAND_READ;
else
cmdBlock->header.command = LEO_COMMAND_WRITE;
cmdBlock->header.reserve1 = 0;
/*
* if mq == null, message will not be sent.
*/
if (mq != NULL)
cmdBlock->header.control = LEO_CONTROL_POST;
else
cmdBlock->header.control = 0;
cmdBlock->header.reserve3 = 0;
cmdBlock->header.post = mq;
cmdBlock->data.readwrite.lba = LBA;
cmdBlock->data.readwrite.xfer_blks = nLBAs;
cmdBlock->data.readwrite.buff_ptr = vAddr;
if (LBA < 0)
cmdBlock->header.control |= LEO_CONTROL_ND;
leoCommand((void *)cmdBlock);
return 0; /* For now, simply returns 0 */
} /* LeoSysReadWrite */