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#include "PR/os_internal.h"
#include "PR/ultraerror.h"
#include "PRinternal/piint.h"
s32 osPiStartDma(OSIoMesg* mb, s32 priority, s32 direction, u32 devAddr, void* dramAddr, u32 size, OSMesgQueue* mq) {
register s32 ret;
if (!__osPiDevMgr.active) {
#ifdef _DEBUG
__osError(ERR_OSPISTARTDMA_PIMGR, 0);
#endif
return -1;
}
#ifdef _DEBUG
if ((priority != OS_MESG_PRI_NORMAL) && (priority != OS_MESG_PRI_HIGH)) {
__osError(ERR_OSPISTARTDMA_PRI, 1, priority);
return -1;
}
if ((direction != OS_READ) && (direction != OS_WRITE)) {
__osError(ERR_OSPISTARTDMA_DIR, 1, direction);
return -1;
}
if (devAddr & 0x1) {
__osError(ERR_OSPISTARTDMA_DEVADDR, 1, devAddr);
return -1;
}
if ((u32)dramAddr & 0x7) {
__osError(ERR_OSPISTARTDMA_ADDR, 1, dramAddr);
return -1;
}
if (size & 0x1) {
__osError(ERR_OSPISTARTDMA_SIZE, 1, size);
return -1;
}
if ((size == 0) || (size > (16 * 1024 * 1024))) {
__osError(ERR_OSPISTARTDMA_RANGE, 1, size);
return -1;
}
#endif
if (direction == OS_READ) {
mb->hdr.type = OS_MESG_TYPE_DMAREAD;
} else {
mb->hdr.type = OS_MESG_TYPE_DMAWRITE;
}
mb->hdr.pri = priority;
mb->hdr.retQueue = mq;
mb->dramAddr = dramAddr;
mb->devAddr = devAddr;
mb->size = size;
mb->piHandle = NULL;
if (priority == OS_MESG_PRI_HIGH) {
ret = osJamMesg(osPiGetCmdQueue(), (OSMesg)mb, OS_MESG_NOBLOCK);
} else {
ret = osSendMesg(osPiGetCmdQueue(), (OSMesg)mb, OS_MESG_NOBLOCK);
}
return ret;
}
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