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Set DMA priority

This commit is contained in:
jaby 2024-03-06 19:08:25 -06:00
parent 247c105a09
commit 9dc4843038
2 changed files with 32 additions and 8 deletions
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38
include/PSX/System/IOPorts/dma_io.hpp
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@ -109,25 +109,49 @@ namespace JabyEngine {
static constexpr Priority LowestPriority = 7;
__declare_io_value(DPCR, uint32_t) {
static constexpr auto OTCEnable = Bit(27);
struct DMASetting {
uint16_t master_bit;
static constexpr DMASetting create(uint16_t master_bit) {
return DMASetting{master_bit};
}
constexpr BitRange::RangeValuePair<uint32_t> turn_on(uint8_t priority) const {
return BitRange::from_to(this->master_bit - 3, this->master_bit).with(static_cast<uint32_t>(0b1000 + (priority & 0b111)));
}
constexpr ClearBit turn_off() const {
return ClearBit(this->master_bit);
}
};
static constexpr const auto OTC = DMASetting(27);
static constexpr const auto PIO = DMASetting(23);
static constexpr const auto SPU = DMASetting(19);
static constexpr const auto CDROM = DMASetting(15);
static constexpr const auto GPU = DMASetting(11);
static constexpr const auto MDEC_Out = DMASetting(7);
static constexpr const auto MDEC_In = DMASetting(3);
static constexpr auto OTCEnabled = Bit(27);
static constexpr auto OTCPriority = BitRange::from_to(24, 26);
static constexpr auto PIOEnable = Bit(23);
static constexpr auto PIOEnabled = Bit(23);
static constexpr auto PIOPriority = BitRange::from_to(20, 22);
static constexpr auto SPUEnable = Bit(19);
static constexpr auto SPUEnabled = Bit(19);
static constexpr auto SPUPriority = BitRange::from_to(16, 18);
static constexpr auto CDROMEnable = Bit(15);
static constexpr auto CDROMEnabled = Bit(15);
static constexpr auto CDROMPriority = BitRange::from_to(12, 14);
static constexpr auto GPUEnable = Bit(11);
static constexpr auto GPUEnabled = Bit(11);
static constexpr auto GPUPriority = BitRange::from_to(8, 10);
static constexpr auto MDECoutEnable = Bit(7);
static constexpr auto MDECoutEnabled = Bit(7);
static constexpr auto MDECoutPriority = BitRange::from_to(4, 6);
static constexpr auto MDECinEnable = Bit(3);
static constexpr auto MDECinEnabled = Bit(3);
static constexpr auto MDECinPriority = BitRange::from_to(0, 2);
};

2
src/Library/src/BootLoader/dma_boot.cpp
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@ -4,7 +4,7 @@ namespace JabyEngine {
namespace boot {
namespace DMA {
void setup() {
static constexpr auto EnableDMA = DMA_IO::DPCR::from(DMA_IO::DPCR::SPUEnable, DMA_IO::DPCR::GPUEnable, DMA_IO::DPCR::CDROMEnable);
static constexpr auto EnableDMA = DMA_IO::DPCR::from(DMA_IO::DPCR::SPU.turn_on(3), DMA_IO::DPCR::GPU.turn_on(3), DMA_IO::DPCR::CDROM.turn_on(3));
DMA_IO::DPCR.write(EnableDMA);
}