testunitready.c
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#include <ultra64.h>
#ifndef _LONGCMD
#include <leo.h>
#else
#include <leosp.h>
#endif
extern s32 __leoActive;
s32 LeoTestUnitReady(LEOStatus *status)
{
volatile LEOCmdTestUnitReady cmdBlock;
/*
* Check for existence of Leo Manager
*/
if (!__leoActive) {
return(-1);
}
/*
* Check to see if PI bus is busy. If so, return LEO_ERROR_BUSY.
* (if IO_BUSY it's O.K., because it will be done soon.)
*/
if (IO_READ(PI_STATUS_REG) & PI_STATUS_DMA_BUSY)
return LEO_ERROR_BUSY;
/*
* Fill up command block
*/
cmdBlock.header.command = LEO_COMMAND_TEST_UNIT_READY;
cmdBlock.header.reserve1 = 0;
cmdBlock.header.control = 0;
cmdBlock.header.reserve3 = 0;
leoCommand((void *)&cmdBlock);
while(cmdBlock.header.status == LEO_STATUS_BUSY)
;
*status = cmdBlock.test;
return (cmdBlock.header.sense);
} /* LeoTestUnitReady */