mirror of
https://github.com/ryujinx-mirror/ryujinx.git
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b2b736abc2
* Fix typos * Remove unneeded using statements * Enforce var style more * Remove redundant qualifiers * Fix some indentation * Disable naming warnings on files with external enum names * Fix build * Mass find & replace for comments with no spacing * Standardize todo capitalization and for/if spacing
190 lines
No EOL
4.9 KiB
C#
190 lines
No EOL
4.9 KiB
C#
using Ryujinx.Graphics.Memory;
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using System.Collections.Concurrent;
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using System.Threading;
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namespace Ryujinx.Graphics
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{
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public class DmaPusher
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{
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private ConcurrentQueue<(NvGpuVmm, long)> _ibBuffer;
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private long _dmaPut;
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private long _dmaGet;
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private struct DmaState
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{
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public int Method;
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public int SubChannel;
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public int MethodCount;
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public bool NonIncrementing;
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public bool IncrementOnce;
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public int LengthPending;
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}
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private DmaState _state;
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private bool _sliEnable;
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private bool _sliActive;
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private bool _ibEnable;
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private bool _nonMain;
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private long _dmaMGet;
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private NvGpuVmm _vmm;
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private NvGpu _gpu;
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private AutoResetEvent _event;
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public DmaPusher(NvGpu gpu)
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{
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_gpu = gpu;
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_ibBuffer = new ConcurrentQueue<(NvGpuVmm, long)>();
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_ibEnable = true;
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_event = new AutoResetEvent(false);
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}
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public void Push(NvGpuVmm vmm, long entry)
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{
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_ibBuffer.Enqueue((vmm, entry));
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_event.Set();
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}
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public bool WaitForCommands()
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{
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return _event.WaitOne(8);
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}
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public void DispatchCalls()
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{
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while (Step());
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}
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private bool Step()
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{
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if (_dmaGet != _dmaPut)
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{
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int word = _vmm.ReadInt32(_dmaGet);
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_dmaGet += 4;
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if (!_nonMain)
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{
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_dmaMGet = _dmaGet;
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}
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if (_state.LengthPending != 0)
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{
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_state.LengthPending = 0;
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_state.MethodCount = word & 0xffffff;
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}
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else if (_state.MethodCount != 0)
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{
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if (!_sliEnable || _sliActive)
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{
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CallMethod(word);
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}
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if (!_state.NonIncrementing)
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{
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_state.Method++;
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}
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if (_state.IncrementOnce)
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{
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_state.NonIncrementing = true;
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}
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_state.MethodCount--;
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}
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else
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{
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int submissionMode = (word >> 29) & 7;
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switch (submissionMode)
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{
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case 1:
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// Incrementing.
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SetNonImmediateState(word);
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_state.NonIncrementing = false;
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_state.IncrementOnce = false;
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break;
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case 3:
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// Non-incrementing.
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SetNonImmediateState(word);
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_state.NonIncrementing = true;
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_state.IncrementOnce = false;
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break;
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case 4:
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// Immediate.
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_state.Method = (word >> 0) & 0x1fff;
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_state.SubChannel = (word >> 13) & 7;
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_state.NonIncrementing = true;
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_state.IncrementOnce = false;
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CallMethod((word >> 16) & 0x1fff);
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break;
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case 5:
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// Increment-once.
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SetNonImmediateState(word);
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_state.NonIncrementing = false;
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_state.IncrementOnce = true;
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break;
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}
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}
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}
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else if (_ibEnable && _ibBuffer.TryDequeue(out (NvGpuVmm Vmm, long Entry) tuple))
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{
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_vmm = tuple.Vmm;
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long entry = tuple.Entry;
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int length = (int)(entry >> 42) & 0x1fffff;
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_dmaGet = entry & 0xfffffffffc;
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_dmaPut = _dmaGet + length * 4;
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_nonMain = (entry & (1L << 41)) != 0;
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_gpu.ResourceManager.ClearPbCache();
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}
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else
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{
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return false;
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}
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return true;
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}
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private void SetNonImmediateState(int word)
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{
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_state.Method = (word >> 0) & 0x1fff;
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_state.SubChannel = (word >> 13) & 7;
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_state.MethodCount = (word >> 16) & 0x1fff;
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}
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private void CallMethod(int argument)
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{
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_gpu.Fifo.CallMethod(_vmm, new GpuMethodCall(
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_state.Method,
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argument,
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_state.SubChannel,
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_state.MethodCount));
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}
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}
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} |