72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
#include "global.h"
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s32 __osEPiRawStartDma(OSPiHandle* handle, s32 direction, u32 cartAddr, void* dramAddr, size_t size) {
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s32 status;
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OSPiHandle* curHandle;
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while (status = HW_REG(PI_STATUS_REG, u32), status & (PI_STATUS_BUSY | PI_STATUS_IOBUSY)) {
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;
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}
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if (__osCurrentHandle[handle->domain]->type != handle->type) {
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curHandle = __osCurrentHandle[handle->domain];
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if (handle->domain == 0) {
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if (curHandle->latency != handle->latency) {
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HW_REG(PI_BSD_DOM1_LAT_REG, u32) = handle->latency;
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}
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if (curHandle->pageSize != handle->pageSize) {
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HW_REG(PI_BSD_DOM1_PGS_REG, u32) = handle->pageSize;
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}
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if (curHandle->relDuration != handle->relDuration) {
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HW_REG(PI_BSD_DOM1_RLS_REG, u32) = handle->relDuration;
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}
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if (curHandle->pulse != handle->pulse) {
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HW_REG(PI_BSD_DOM1_PWD_REG, u32) = handle->pulse;
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}
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} else {
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if (curHandle->latency != handle->latency) {
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HW_REG(PI_BSD_DOM2_LAT_REG, u32) = handle->latency;
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}
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if (curHandle->pageSize != handle->pageSize) {
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HW_REG(PI_BSD_DOM2_PGS_REG, u32) = handle->pageSize;
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}
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if (curHandle->relDuration != handle->relDuration) {
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HW_REG(PI_BSD_DOM2_RLS_REG, u32) = handle->relDuration;
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}
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if (curHandle->pulse != handle->pulse) {
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HW_REG(PI_BSD_DOM2_PWD_REG, u32) = handle->pulse;
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}
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}
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curHandle->type = handle->type;
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curHandle->latency = handle->latency;
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curHandle->pageSize = handle->pageSize;
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curHandle->relDuration = handle->relDuration;
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curHandle->pulse = handle->pulse;
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}
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HW_REG(PI_DRAM_ADDR_REG, void*) = (void*)osVirtualToPhysical(dramAddr);
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HW_REG(PI_CART_ADDR_REG, void*) = (void*)((handle->baseAddress | cartAddr) & 0x1FFFFFFF);
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switch (direction) {
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case OS_READ:
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HW_REG(PI_WR_LEN_REG, u32) = size - 1;
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break;
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case OS_WRITE:
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HW_REG(PI_RD_LEN_REG, u32) = size - 1;
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break;
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default:
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return -1;
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break;
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}
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return 0;
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}
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