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Trying to setup writeback and add basic secondary command execution.

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This commit is contained in:
Ben Vanik
2013-06-01 03:08:31 -07:00
parent 5b0fa8f17e
commit ba16a0d847
7 changed files with 105 additions and 29 deletions
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40
src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.cc
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@@ -178,21 +178,45 @@ SHIM_CALL VdInitializeRingBuffer_shim(
}
// void VdEnableRingBufferRPtrWriteBack
// r3 = ? pointer? doesn't look like a valid one
// r4 = 6, usually --- <=19
// Same value used to calculate the pointer is later written to
// Maybe GPU-memory relative?
void xeVdEnableRingBufferRPtrWriteBack(uint32_t ptr, uint32_t block_size) {
KernelState* state = shared_kernel_state_;
XEASSERTNOTNULL(state);
GraphicsSystem* gs = state->processor()->graphics_system().get();
if (!gs) {
return;
}
// r4 = 6, usually --- <=19
gs->EnableReadPointerWriteBack(ptr, block_size);
ptr += 0x20000000;
printf("%.8X", ptr);
// 0x0110343c
//((p + 0x3C) & 0x1FFFFFFF) + ((((p + 0x3C) >> 20) + 0x200) & 0x1000)
//also 0x3C offset into WriteBacks is PrimaryRingBufferReadIndex
//(1:17:38 AM) Rick: .text:8201B348 lwz r11, 0x2B10(r31)
//(1:17:38 AM) Rick: .text:8201B34C addi r11, r11, 0x3C
//(1:17:38 AM) Rick: .text:8201B350 srwi r10, r11, 20 # r10 = r11 >> 20
//(1:17:38 AM) Rick: .text:8201B354 clrlwi r11, r11, 3 # r11 = r11 & 0x1FFFFFFF
//(1:17:38 AM) Rick: .text:8201B358 addi r10, r10, 0x200
//(1:17:39 AM) Rick: .text:8201B35C rlwinm r10, r10, 0,19,19 # r10 = r10 & 0x1000
//(1:17:39 AM) Rick: .text:8201B360 add r3, r10, r11
//(1:17:39 AM) Rick: .text:8201B364 bl VdEnableRingBufferRPtrWriteBack
// TODO(benvanik): something?
}
SHIM_CALL VdEnableRingBufferRPtrWriteBack_shim(
xe_ppc_state_t* ppc_state, KernelState* state) {
uint32_t ptr = SHIM_GET_ARG_32(0);
uint32_t unk1 = SHIM_GET_ARG_32(1);
uint32_t block_size = SHIM_GET_ARG_32(1);
XELOGD(
"VdEnableRingBufferRPtrWriteBack(%.8X, %.8X)",
ptr, unk1);
ptr, block_size);
// TODO(benvanik): something?
xeVdEnableRingBufferRPtrWriteBack(ptr, block_size);
}

1
src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.h
View File

@@ -42,6 +42,7 @@ void xeVdQueryVideoMode(X_VIDEO_MODE *video_mode, bool swap);
void xeVdInitializeEngines(uint32_t unk0, uint32_t callback, uint32_t unk1,
uint32_t unk2_ptr, uint32_t unk3_ptr);
void xeVdSetGraphicsInterruptCallback(uint32_t callback, uint32_t user_data);
void xeVdEnableRingBufferRPtrWriteBack(uint32_t ptr, uint32_t block_size);
} // namespace xboxkrnl