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DMA: Implement linked list mode

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This commit is contained in:
Connor McLaughlin
2019-09-11 14:59:41 +10:00
parent 27913cd20a
commit 162f94337e
4 changed files with 182 additions and 48 deletions
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8
src/pse/dma.h
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@ -37,7 +37,7 @@ public:
void SetRequest(Channel channel, bool request);
private:
static constexpr PhysicalMemoryAddress BASE_ADDRESS_MASK = UINT32_C(0x00FFFFFF);
static constexpr PhysicalMemoryAddress ADDRESS_MASK = UINT32_C(0x00FFFFFF);
enum class SyncMode : u32
{
@ -53,10 +53,10 @@ private:
void RunDMA(Channel channel);
// from device -> memory
u32 DMARead(Channel channel);
u32 DMARead(Channel channel, PhysicalMemoryAddress dst_address, u32 remaining_words);
// from memory -> device
void DMAWrite(Channel channel, u32 value);
void DMAWrite(Channel channel, u32 value, PhysicalMemoryAddress src_address, u32 remaining_words);
Bus* m_bus = nullptr;
GPU* m_gpu = nullptr;
@ -88,7 +88,7 @@ private:
{
u32 bits;
BitField<u32, bool, 0, 1> copy_to_device;
BitField<u32, bool, 1, 1> address_step_forward;
BitField<u32, bool, 1, 1> address_step_reverse;
BitField<u32, bool, 8, 1> chopping_enable;
BitField<u32, SyncMode, 9, 2> sync_mode;
BitField<u32, u32, 16, 3> chopping_dma_window_size;