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#include "PR/os_internal.h"
#include "assert.h"
#include "PRinternal/siint.h"
// Adjust line numbers to match assert
#if BUILD_VERSION < VERSION_J
#line 47
#endif
#define PIF_RAM_SIZE (PIF_RAM_END + 1 - PIF_RAM_START)
// TODO: this comes from a header
#ident "$Revision: 1.17 $"
s32 __osSiRawStartDma(s32 direction, void* dramAddr) {
assert(((u32)dramAddr & 0x3) == 0);
#if BUILD_VERSION >= VERSION_J
if (IO_READ(SI_STATUS_REG) & (SI_STATUS_DMA_BUSY | SI_STATUS_RD_BUSY)) {
return -1;
}
#else
if (__osSiDeviceBusy()) {
return -1;
}
#endif
if (direction == OS_WRITE) {
osWritebackDCache(dramAddr, PIF_RAM_SIZE);
}
IO_WRITE(SI_DRAM_ADDR_REG, osVirtualToPhysical(dramAddr));
if (direction == OS_READ) {
IO_WRITE(SI_PIF_ADDR_RD64B_REG, PIF_RAM_START);
} else {
IO_WRITE(SI_PIF_ADDR_WR64B_REG, PIF_RAM_START);
}
if (direction == OS_READ) {
osInvalDCache(dramAddr, PIF_RAM_SIZE);
}
return 0;
}
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