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agc: emit async memory semaphores and execute them in the CP

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This commit is contained in:
Claxten
2026-10-27 00:36:40 +01:00
committed by nmzik
parent 914a3bb4b8
commit 1b70938052
9 changed files with 144 additions and 2 deletions
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src/graphics/guest_gpu/command_processor/commandProcessor.h
+1
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@@ -98,6 +98,7 @@ public:
template <typename T>
void WaitRegMem(uint32_t func, const T* addr, T ref, T mask, uint32_t poll, uint32_t wait_op);
void MemSemaphore(uint64_t* counter, bool signal, bool write);
void WriteData(uint32_t* dst, const uint32_t* src, uint32_t dw_num, uint32_t write_control);
void WriteReferenceClock(uint64_t dst_address, uint32_t num_bytes);
void DmaData(uint8_t engine, uint8_t dst_sel, uint8_t dst_cache_policy,
src/graphics/guest_gpu/command_processor/pm4Dispatch.cpp
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@@ -202,6 +202,7 @@ constexpr auto MakeOpcodeDispatchTable() {
g_cp_op_func[Pm4::IT_DMA_DATA] = CpOpDmaData;
g_cp_op_func[Pm4::IT_ACQUIRE_MEM] = CpOpAcquireMem;
g_cp_op_func[Pm4::IT_RELEASE_MEM] = CpOpReleaseMem;
g_cp_op_func[Pm4::IT_MEM_SEMAPHORE] = CpOpMemSemaphore;
g_cp_op_func[Pm4::IT_REWIND] = CpOpRewind;
g_cp_op_func[Pm4::IT_SET_CONTEXT_REG] = CpOpSetContextReg;
g_cp_op_func[Pm4::IT_SET_SH_REG] = CpOpSetShaderReg;
src/graphics/guest_gpu/command_processor/pm4Dispatch.h
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@@ -136,6 +136,7 @@ uint32_t CpOpEventWrite(CommandProcessor&, uint32_t, const uint32_t*, uint32_t,
uint32_t CpOpDmaData(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
uint32_t CpOpAcquireMem(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
uint32_t CpOpReleaseMem(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
uint32_t CpOpMemSemaphore(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
uint32_t CpOpSetContextReg(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
uint32_t CpOpSetShaderReg(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
uint32_t CpOpSetUconfigReg(CommandProcessor&, uint32_t, const uint32_t*, uint32_t, uint32_t);
src/graphics/guest_gpu/command_processor/pm4Handlers.cpp
+15
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@@ -2060,6 +2060,21 @@ KYTY_CP_OP_PARSER(CpOpReleaseMem) {
return 7;
}
KYTY_CP_OP_PARSER(CpOpMemSemaphore) {
KYTY_PROFILER_FUNCTION();
const auto control = buffer[2];
EXIT_NOT_IMPLEMENTED(cmd_id != 0xc0023900 || (control & ~0xe0110000u) != 0 ||
(control >> 29u) < 6u);
auto* counter = reinterpret_cast<uint64_t*>(
(buffer[0] & ~0x7u) | (static_cast<uint64_t>(buffer[1] & 0x3ffffu) << 32u));
// A signal updates the counter before the next packet, so its mailbox stall never waits.
cp.MemSemaphore(counter, (control >> 29u) == 6u, ((control >> 20u) & 0x1u) != 0);
return 3;
}
KYTY_CP_OP_PARSER(CpOpSetContextReg) {
KYTY_PROFILER_FUNCTION();
src/graphics/guest_gpu/graphicsRun.cpp
+10
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@@ -281,6 +281,16 @@ template void CommandProcessor::WaitRegMem<uint32_t>(uint32_t, const uint32_t*,
template void CommandProcessor::WaitRegMem<uint64_t>(uint32_t, const uint64_t*, uint64_t, uint64_t,
uint32_t, uint32_t);
void CommandProcessor::MemSemaphore(uint64_t* counter, bool signal, bool write) {
if (signal) {
*counter = write ? 1u : *counter + 1u;
} else if (*counter == 0) {
SuspendPm4();
} else {
(*counter)--;
}
}
void CommandProcessor::WriteData(uint32_t* dst, const uint32_t* src, uint32_t dw_num,
uint32_t write_control) {
const uint32_t dst_sel = ((write_control >> 30u) & 0x1u) | ((write_control >> 7u) & 0x1eu);