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https://github.com/Lime3DS/Lime3DS.git
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DSP: Create backing memory for entire DSP RAM
Also move address space mapping out of video_core.
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d3db770cad
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@ -2,6 +2,7 @@
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// Licensed under GPLv2 or any later version
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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// Refer to the license.txt file included.
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#include <array>
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#include <memory>
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#include <memory>
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#include <string>
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#include <string>
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#include "audio_core/audio_core.h"
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#include "audio_core/audio_core.h"
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@ -10,8 +11,8 @@
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#include "audio_core/null_sink.h"
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#include "audio_core/null_sink.h"
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#include "audio_core/sink.h"
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#include "audio_core/sink.h"
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#include "audio_core/sink_details.h"
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#include "audio_core/sink_details.h"
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#include "common/common_types.h"
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#include "core/core_timing.h"
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#include "core/core_timing.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/hle/service/dsp_dsp.h"
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#include "core/hle/service/dsp_dsp.h"
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namespace AudioCore {
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namespace AudioCore {
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@ -39,20 +40,8 @@ void Init() {
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CoreTiming::ScheduleEvent(audio_frame_ticks, tick_event);
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CoreTiming::ScheduleEvent(audio_frame_ticks, tick_event);
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}
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}
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void AddAddressSpace(Kernel::VMManager& address_space) {
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std::array<u8, Memory::DSP_RAM_SIZE>& GetDspMemory() {
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auto r0_vma = address_space
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return DSP::HLE::g_dsp_memory.raw_memory;
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.MapBackingMemory(DSP::HLE::region0_base,
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reinterpret_cast<u8*>(&DSP::HLE::g_regions[0]),
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sizeof(DSP::HLE::SharedMemory), Kernel::MemoryState::IO)
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.MoveFrom();
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address_space.Reprotect(r0_vma, Kernel::VMAPermission::ReadWrite);
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auto r1_vma = address_space
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.MapBackingMemory(DSP::HLE::region1_base,
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reinterpret_cast<u8*>(&DSP::HLE::g_regions[1]),
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sizeof(DSP::HLE::SharedMemory), Kernel::MemoryState::IO)
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.MoveFrom();
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address_space.Reprotect(r1_vma, Kernel::VMAPermission::ReadWrite);
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}
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}
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void SelectSink(std::string sink_id) {
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void SelectSink(std::string sink_id) {
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@ -4,11 +4,10 @@
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#pragma once
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#pragma once
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#include <array>
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#include <string>
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#include <string>
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#include "common/common_types.h"
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namespace Kernel {
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#include "core/memory.h"
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class VMManager;
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}
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namespace AudioCore {
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namespace AudioCore {
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@ -17,8 +16,8 @@ constexpr int native_sample_rate = 32728; ///< 32kHz
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/// Initialise Audio Core
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/// Initialise Audio Core
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void Init();
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void Init();
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/// Add DSP address spaces to a Process.
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/// Returns a reference to the array backing DSP memory
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void AddAddressSpace(Kernel::VMManager& vm_manager);
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std::array<u8, Memory::DSP_RAM_SIZE>& GetDspMemory();
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/// Select the sink to use based on sink id.
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/// Select the sink to use based on sink id.
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void SelectSink(std::string sink_id);
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void SelectSink(std::string sink_id);
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@ -29,4 +28,4 @@ void EnableStretching(bool enable);
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/// Shutdown Audio Core
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/// Shutdown Audio Core
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void Shutdown();
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void Shutdown();
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} // namespace
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} // namespace AudioCore
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@ -16,31 +16,33 @@ namespace HLE {
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// Region management
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// Region management
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std::array<SharedMemory, 2> g_regions;
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DspMemory g_dsp_memory;
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static size_t CurrentRegionIndex() {
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static size_t CurrentRegionIndex() {
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// The region with the higher frame counter is chosen unless there is wraparound.
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// The region with the higher frame counter is chosen unless there is wraparound.
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// This function only returns a 0 or 1.
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// This function only returns a 0 or 1.
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u16 frame_counter_0 = g_dsp_memory.region_0.frame_counter;
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u16 frame_counter_1 = g_dsp_memory.region_1.frame_counter;
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if (g_regions[0].frame_counter == 0xFFFFu && g_regions[1].frame_counter != 0xFFFEu) {
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if (frame_counter_0 == 0xFFFFu && frame_counter_1 != 0xFFFEu) {
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// Wraparound has occurred.
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// Wraparound has occurred.
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return 1;
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return 1;
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}
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}
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if (g_regions[1].frame_counter == 0xFFFFu && g_regions[0].frame_counter != 0xFFFEu) {
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if (frame_counter_1 == 0xFFFFu && frame_counter_0 != 0xFFFEu) {
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// Wraparound has occurred.
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// Wraparound has occurred.
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return 0;
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return 0;
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}
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}
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return (g_regions[0].frame_counter > g_regions[1].frame_counter) ? 0 : 1;
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return (frame_counter_0 > frame_counter_1) ? 0 : 1;
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}
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}
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static SharedMemory& ReadRegion() {
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static SharedMemory& ReadRegion() {
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return g_regions[CurrentRegionIndex()];
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return CurrentRegionIndex() == 0 ? g_dsp_memory.region_0 : g_dsp_memory.region_1;
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}
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}
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static SharedMemory& WriteRegion() {
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static SharedMemory& WriteRegion() {
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return g_regions[1 - CurrentRegionIndex()];
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return CurrentRegionIndex() != 0 ? g_dsp_memory.region_0 : g_dsp_memory.region_1;
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}
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}
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// Audio processing and mixing
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// Audio processing and mixing
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@ -31,8 +31,8 @@ namespace HLE {
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// double-buffer. The frame counter is located as the very last u16 of each region and is
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// double-buffer. The frame counter is located as the very last u16 of each region and is
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// incremented each audio tick.
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// incremented each audio tick.
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constexpr VAddr region0_base = 0x1FF50000;
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constexpr u32 region0_offset = 0x50000;
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constexpr VAddr region1_base = 0x1FF70000;
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constexpr u32 region1_offset = 0x70000;
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/**
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/**
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* The DSP is native 16-bit. The DSP also appears to be big-endian. When reading 32-bit numbers from
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* The DSP is native 16-bit. The DSP also appears to be big-endian. When reading 32-bit numbers from
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@ -512,7 +512,22 @@ struct SharedMemory {
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};
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};
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ASSERT_DSP_STRUCT(SharedMemory, 0x8000);
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ASSERT_DSP_STRUCT(SharedMemory, 0x8000);
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extern std::array<SharedMemory, 2> g_regions;
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union DspMemory {
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std::array<u8, 0x80000> raw_memory;
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struct {
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u8 unused_0[0x50000];
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SharedMemory region_0;
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u8 unused_1[0x18000];
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SharedMemory region_1;
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u8 unused_2[0x8000];
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};
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};
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static_assert(offsetof(DspMemory, region_0) == region0_offset,
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"DSP region 0 is at the wrong offset");
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static_assert(offsetof(DspMemory, region_1) == region1_offset,
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"DSP region 1 is at the wrong offset");
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extern DspMemory g_dsp_memory;
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// Structures must have an offset that is a multiple of two.
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// Structures must have an offset that is a multiple of two.
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static_assert(offsetof(SharedMemory, frame_counter) % 2 == 0,
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static_assert(offsetof(SharedMemory, frame_counter) % 2 == 0,
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@ -137,7 +137,12 @@ void InitLegacyAddressSpace(Kernel::VMManager& address_space) {
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.MoveFrom();
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.MoveFrom();
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address_space.Reprotect(shared_page_vma, VMAPermission::Read);
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address_space.Reprotect(shared_page_vma, VMAPermission::Read);
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AudioCore::AddAddressSpace(address_space);
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auto& dsp_ram = AudioCore::GetDspMemory();
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auto dsp_vma = address_space
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.MapBackingMemory(DSP_RAM_VADDR, dsp_ram.data(), dsp_ram.size(),
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Kernel::MemoryState::IO)
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.MoveFrom();
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address_space.Reprotect(dsp_vma, Kernel::VMAPermission::ReadWrite);
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}
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}
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} // namespace
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} // namespace
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