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DMA: Batch multi-word transfers together

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This commit is contained in:
Connor McLaughlin
2019-10-13 16:48:11 +10:00
parent 88ec178380
commit ec8c5d4bb6
12 changed files with 273 additions and 149 deletions
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6
src/core/dma.h
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@ -65,10 +65,10 @@ private:
void TransferChannel(Channel channel);
// from device -> memory
u32 DMARead(Channel channel, PhysicalMemoryAddress dst_address, u32 remaining_words);
void TransferDeviceToMemory(Channel channel, u32 address, u32 increment, u32 word_count);
// from memory -> device
void DMAWrite(Channel channel, u32 value, PhysicalMemoryAddress src_address, u32 remaining_words);
void TransferMemoryToDevice(Channel channel, u32 address, u32 increment, u32 word_count);
System* m_system = nullptr;
Bus* m_bus = nullptr;
@ -81,6 +81,8 @@ private:
TickCount m_transfer_ticks = 0;
bool m_transfer_in_progress = false;
std::vector<u32> m_transfer_buffer;
struct ChannelState
{
u32 base_address;