diff --git a/src/audio_core/audio_core.cpp b/src/audio_core/audio_core.cpp index 84f9c03a7..9c2e6ed88 100644 --- a/src/audio_core/audio_core.cpp +++ b/src/audio_core/audio_core.cpp @@ -2,6 +2,7 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include #include #include #include "audio_core/audio_core.h" @@ -10,8 +11,8 @@ #include "audio_core/null_sink.h" #include "audio_core/sink.h" #include "audio_core/sink_details.h" +#include "common/common_types.h" #include "core/core_timing.h" -#include "core/hle/kernel/vm_manager.h" #include "core/hle/service/dsp_dsp.h" namespace AudioCore { @@ -39,20 +40,8 @@ void Init() { CoreTiming::ScheduleEvent(audio_frame_ticks, tick_event); } -void AddAddressSpace(Kernel::VMManager& address_space) { - auto r0_vma = address_space - .MapBackingMemory(DSP::HLE::region0_base, - reinterpret_cast(&DSP::HLE::g_regions[0]), - sizeof(DSP::HLE::SharedMemory), Kernel::MemoryState::IO) - .MoveFrom(); - address_space.Reprotect(r0_vma, Kernel::VMAPermission::ReadWrite); - - auto r1_vma = address_space - .MapBackingMemory(DSP::HLE::region1_base, - reinterpret_cast(&DSP::HLE::g_regions[1]), - sizeof(DSP::HLE::SharedMemory), Kernel::MemoryState::IO) - .MoveFrom(); - address_space.Reprotect(r1_vma, Kernel::VMAPermission::ReadWrite); +std::array& GetDspMemory() { + return DSP::HLE::g_dsp_memory.raw_memory; } void SelectSink(std::string sink_id) { diff --git a/src/audio_core/audio_core.h b/src/audio_core/audio_core.h index 0edf6dd15..ab323ce1f 100644 --- a/src/audio_core/audio_core.h +++ b/src/audio_core/audio_core.h @@ -4,11 +4,10 @@ #pragma once +#include #include - -namespace Kernel { -class VMManager; -} +#include "common/common_types.h" +#include "core/memory.h" namespace AudioCore { @@ -17,8 +16,8 @@ constexpr int native_sample_rate = 32728; ///< 32kHz /// Initialise Audio Core void Init(); -/// Add DSP address spaces to a Process. -void AddAddressSpace(Kernel::VMManager& vm_manager); +/// Returns a reference to the array backing DSP memory +std::array& GetDspMemory(); /// Select the sink to use based on sink id. void SelectSink(std::string sink_id); @@ -29,4 +28,4 @@ void EnableStretching(bool enable); /// Shutdown Audio Core void Shutdown(); -} // namespace +} // namespace AudioCore diff --git a/src/audio_core/hle/dsp.cpp b/src/audio_core/hle/dsp.cpp index 31421fdc6..260b182ed 100644 --- a/src/audio_core/hle/dsp.cpp +++ b/src/audio_core/hle/dsp.cpp @@ -16,31 +16,33 @@ namespace HLE { // Region management -std::array g_regions; +DspMemory g_dsp_memory; static size_t CurrentRegionIndex() { // The region with the higher frame counter is chosen unless there is wraparound. // This function only returns a 0 or 1. + u16 frame_counter_0 = g_dsp_memory.region_0.frame_counter; + u16 frame_counter_1 = g_dsp_memory.region_1.frame_counter; - if (g_regions[0].frame_counter == 0xFFFFu && g_regions[1].frame_counter != 0xFFFEu) { + if (frame_counter_0 == 0xFFFFu && frame_counter_1 != 0xFFFEu) { // Wraparound has occurred. return 1; } - if (g_regions[1].frame_counter == 0xFFFFu && g_regions[0].frame_counter != 0xFFFEu) { + if (frame_counter_1 == 0xFFFFu && frame_counter_0 != 0xFFFEu) { // Wraparound has occurred. return 0; } - return (g_regions[0].frame_counter > g_regions[1].frame_counter) ? 0 : 1; + return (frame_counter_0 > frame_counter_1) ? 0 : 1; } static SharedMemory& ReadRegion() { - return g_regions[CurrentRegionIndex()]; + return CurrentRegionIndex() == 0 ? g_dsp_memory.region_0 : g_dsp_memory.region_1; } static SharedMemory& WriteRegion() { - return g_regions[1 - CurrentRegionIndex()]; + return CurrentRegionIndex() != 0 ? g_dsp_memory.region_0 : g_dsp_memory.region_1; } // Audio processing and mixing diff --git a/src/audio_core/hle/dsp.h b/src/audio_core/hle/dsp.h index 0a0f60ac1..94ce48863 100644 --- a/src/audio_core/hle/dsp.h +++ b/src/audio_core/hle/dsp.h @@ -31,8 +31,8 @@ namespace HLE { // double-buffer. The frame counter is located as the very last u16 of each region and is // incremented each audio tick. -constexpr VAddr region0_base = 0x1FF50000; -constexpr VAddr region1_base = 0x1FF70000; +constexpr u32 region0_offset = 0x50000; +constexpr u32 region1_offset = 0x70000; /** * The DSP is native 16-bit. The DSP also appears to be big-endian. When reading 32-bit numbers from @@ -512,7 +512,22 @@ struct SharedMemory { }; ASSERT_DSP_STRUCT(SharedMemory, 0x8000); -extern std::array g_regions; +union DspMemory { + std::array raw_memory; + struct { + u8 unused_0[0x50000]; + SharedMemory region_0; + u8 unused_1[0x18000]; + SharedMemory region_1; + u8 unused_2[0x8000]; + }; +}; +static_assert(offsetof(DspMemory, region_0) == region0_offset, + "DSP region 0 is at the wrong offset"); +static_assert(offsetof(DspMemory, region_1) == region1_offset, + "DSP region 1 is at the wrong offset"); + +extern DspMemory g_dsp_memory; // Structures must have an offset that is a multiple of two. static_assert(offsetof(SharedMemory, frame_counter) % 2 == 0, diff --git a/src/core/hle/kernel/memory.cpp b/src/core/hle/kernel/memory.cpp index 33c165197..be7c7513f 100644 --- a/src/core/hle/kernel/memory.cpp +++ b/src/core/hle/kernel/memory.cpp @@ -137,7 +137,12 @@ void InitLegacyAddressSpace(Kernel::VMManager& address_space) { .MoveFrom(); address_space.Reprotect(shared_page_vma, VMAPermission::Read); - AudioCore::AddAddressSpace(address_space); + auto& dsp_ram = AudioCore::GetDspMemory(); + auto dsp_vma = address_space + .MapBackingMemory(DSP_RAM_VADDR, dsp_ram.data(), dsp_ram.size(), + Kernel::MemoryState::IO) + .MoveFrom(); + address_space.Reprotect(dsp_vma, Kernel::VMAPermission::ReadWrite); } } // namespace