mirror of
https://github.com/Lime3DS/Lime3DS.git
synced 2024-11-02 16:35:06 +01:00
commit
cd0b31fd73
@ -250,6 +250,7 @@ set(HEADERS
|
|||||||
tracer/citrace.h
|
tracer/citrace.h
|
||||||
memory.h
|
memory.h
|
||||||
memory_setup.h
|
memory_setup.h
|
||||||
|
mmio.h
|
||||||
settings.h
|
settings.h
|
||||||
system.h
|
system.h
|
||||||
)
|
)
|
||||||
|
@ -8,6 +8,7 @@
|
|||||||
|
|
||||||
#include "core/hle/kernel/vm_manager.h"
|
#include "core/hle/kernel/vm_manager.h"
|
||||||
#include "core/memory_setup.h"
|
#include "core/memory_setup.h"
|
||||||
|
#include "core/mmio.h"
|
||||||
|
|
||||||
namespace Kernel {
|
namespace Kernel {
|
||||||
|
|
||||||
@ -104,7 +105,7 @@ ResultVal<VMManager::VMAHandle> VMManager::MapBackingMemory(VAddr target, u8 * m
|
|||||||
return MakeResult<VMAHandle>(MergeAdjacent(vma_handle));
|
return MakeResult<VMAHandle>(MergeAdjacent(vma_handle));
|
||||||
}
|
}
|
||||||
|
|
||||||
ResultVal<VMManager::VMAHandle> VMManager::MapMMIO(VAddr target, PAddr paddr, u32 size, MemoryState state) {
|
ResultVal<VMManager::VMAHandle> VMManager::MapMMIO(VAddr target, PAddr paddr, u32 size, MemoryState state, Memory::MMIORegionPointer mmio_handler) {
|
||||||
// This is the appropriately sized VMA that will turn into our allocation.
|
// This is the appropriately sized VMA that will turn into our allocation.
|
||||||
CASCADE_RESULT(VMAIter vma_handle, CarveVMA(target, size));
|
CASCADE_RESULT(VMAIter vma_handle, CarveVMA(target, size));
|
||||||
VirtualMemoryArea& final_vma = vma_handle->second;
|
VirtualMemoryArea& final_vma = vma_handle->second;
|
||||||
@ -114,6 +115,7 @@ ResultVal<VMManager::VMAHandle> VMManager::MapMMIO(VAddr target, PAddr paddr, u3
|
|||||||
final_vma.permissions = VMAPermission::ReadWrite;
|
final_vma.permissions = VMAPermission::ReadWrite;
|
||||||
final_vma.meminfo_state = state;
|
final_vma.meminfo_state = state;
|
||||||
final_vma.paddr = paddr;
|
final_vma.paddr = paddr;
|
||||||
|
final_vma.mmio_handler = mmio_handler;
|
||||||
UpdatePageTableForVMA(final_vma);
|
UpdatePageTableForVMA(final_vma);
|
||||||
|
|
||||||
return MakeResult<VMAHandle>(MergeAdjacent(vma_handle));
|
return MakeResult<VMAHandle>(MergeAdjacent(vma_handle));
|
||||||
@ -330,8 +332,7 @@ void VMManager::UpdatePageTableForVMA(const VirtualMemoryArea& vma) {
|
|||||||
Memory::MapMemoryRegion(vma.base, vma.size, vma.backing_memory);
|
Memory::MapMemoryRegion(vma.base, vma.size, vma.backing_memory);
|
||||||
break;
|
break;
|
||||||
case VMAType::MMIO:
|
case VMAType::MMIO:
|
||||||
// TODO(yuriks): Add support for MMIO handlers.
|
Memory::MapIoRegion(vma.base, vma.size, vma.mmio_handler);
|
||||||
Memory::MapIoRegion(vma.base, vma.size);
|
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
@ -11,6 +11,7 @@
|
|||||||
#include "common/common_types.h"
|
#include "common/common_types.h"
|
||||||
|
|
||||||
#include "core/hle/result.h"
|
#include "core/hle/result.h"
|
||||||
|
#include "core/mmio.h"
|
||||||
|
|
||||||
namespace Kernel {
|
namespace Kernel {
|
||||||
|
|
||||||
@ -92,6 +93,7 @@ struct VirtualMemoryArea {
|
|||||||
// Settings for type = MMIO
|
// Settings for type = MMIO
|
||||||
/// Physical address of the register area this VMA maps to.
|
/// Physical address of the register area this VMA maps to.
|
||||||
PAddr paddr = 0;
|
PAddr paddr = 0;
|
||||||
|
Memory::MMIORegionPointer mmio_handler = nullptr;
|
||||||
|
|
||||||
/// Tests if this area can be merged to the right with `next`.
|
/// Tests if this area can be merged to the right with `next`.
|
||||||
bool CanBeMergedWith(const VirtualMemoryArea& next) const;
|
bool CanBeMergedWith(const VirtualMemoryArea& next) const;
|
||||||
@ -168,8 +170,9 @@ public:
|
|||||||
* @param paddr The physical address where the registers are present.
|
* @param paddr The physical address where the registers are present.
|
||||||
* @param size Size of the mapping.
|
* @param size Size of the mapping.
|
||||||
* @param state MemoryState tag to attach to the VMA.
|
* @param state MemoryState tag to attach to the VMA.
|
||||||
|
* @param mmio_handler The handler that will implement read and write for this MMIO region.
|
||||||
*/
|
*/
|
||||||
ResultVal<VMAHandle> MapMMIO(VAddr target, PAddr paddr, u32 size, MemoryState state);
|
ResultVal<VMAHandle> MapMMIO(VAddr target, PAddr paddr, u32 size, MemoryState state, Memory::MMIORegionPointer mmio_handler);
|
||||||
|
|
||||||
/// Unmaps a range of addresses, splitting VMAs as necessary.
|
/// Unmaps a range of addresses, splitting VMAs as necessary.
|
||||||
ResultCode UnmapRange(VAddr target, u32 size);
|
ResultCode UnmapRange(VAddr target, u32 size);
|
||||||
|
@ -13,6 +13,7 @@
|
|||||||
#include "core/hle/kernel/process.h"
|
#include "core/hle/kernel/process.h"
|
||||||
#include "core/memory.h"
|
#include "core/memory.h"
|
||||||
#include "core/memory_setup.h"
|
#include "core/memory_setup.h"
|
||||||
|
#include "core/mmio.h"
|
||||||
|
|
||||||
namespace Memory {
|
namespace Memory {
|
||||||
|
|
||||||
@ -25,6 +26,12 @@ enum class PageType {
|
|||||||
Special,
|
Special,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
struct SpecialRegion {
|
||||||
|
VAddr base;
|
||||||
|
u32 size;
|
||||||
|
MMIORegionPointer handler;
|
||||||
|
};
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* A (reasonably) fast way of allowing switchable and remappable process address spaces. It loosely
|
* A (reasonably) fast way of allowing switchable and remappable process address spaces. It loosely
|
||||||
* mimics the way a real CPU page table works, but instead is optimized for minimal decoding and
|
* mimics the way a real CPU page table works, but instead is optimized for minimal decoding and
|
||||||
@ -40,9 +47,14 @@ struct PageTable {
|
|||||||
*/
|
*/
|
||||||
std::array<u8*, NUM_ENTRIES> pointers;
|
std::array<u8*, NUM_ENTRIES> pointers;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Contains MMIO handlers that back memory regions whose entries in the `attribute` array is of type `Special`.
|
||||||
|
*/
|
||||||
|
std::vector<SpecialRegion> special_regions;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Array of fine grained page attributes. If it is set to any value other than `Memory`, then
|
* Array of fine grained page attributes. If it is set to any value other than `Memory`, then
|
||||||
* the corresponding entry in `pointer` MUST be set to null.
|
* the corresponding entry in `pointers` MUST be set to null.
|
||||||
*/
|
*/
|
||||||
std::array<PageType, NUM_ENTRIES> attributes;
|
std::array<PageType, NUM_ENTRIES> attributes;
|
||||||
};
|
};
|
||||||
@ -80,10 +92,12 @@ void MapMemoryRegion(VAddr base, u32 size, u8* target) {
|
|||||||
MapPages(base / PAGE_SIZE, size / PAGE_SIZE, target, PageType::Memory);
|
MapPages(base / PAGE_SIZE, size / PAGE_SIZE, target, PageType::Memory);
|
||||||
}
|
}
|
||||||
|
|
||||||
void MapIoRegion(VAddr base, u32 size) {
|
void MapIoRegion(VAddr base, u32 size, MMIORegionPointer mmio_handler) {
|
||||||
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: %08X", size);
|
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: %08X", size);
|
||||||
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: %08X", base);
|
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: %08X", base);
|
||||||
MapPages(base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Special);
|
MapPages(base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Special);
|
||||||
|
|
||||||
|
current_page_table->special_regions.emplace_back(SpecialRegion{base, size, mmio_handler});
|
||||||
}
|
}
|
||||||
|
|
||||||
void UnmapRegion(VAddr base, u32 size) {
|
void UnmapRegion(VAddr base, u32 size) {
|
||||||
@ -92,6 +106,22 @@ void UnmapRegion(VAddr base, u32 size) {
|
|||||||
MapPages(base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Unmapped);
|
MapPages(base / PAGE_SIZE, size / PAGE_SIZE, nullptr, PageType::Unmapped);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* This function should only be called for virtual addreses with attribute `PageType::Special`.
|
||||||
|
*/
|
||||||
|
static MMIORegionPointer GetMMIOHandler(VAddr vaddr) {
|
||||||
|
for (const auto& region : current_page_table->special_regions) {
|
||||||
|
if (vaddr >= region.base && vaddr < (region.base + region.size)) {
|
||||||
|
return region.handler;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
ASSERT_MSG(false, "Mapped IO page without a handler @ %08X", vaddr);
|
||||||
|
return nullptr; // Should never happen
|
||||||
|
}
|
||||||
|
|
||||||
|
template<typename T>
|
||||||
|
T ReadMMIO(MMIORegionPointer mmio_handler, VAddr addr);
|
||||||
|
|
||||||
template <typename T>
|
template <typename T>
|
||||||
T Read(const VAddr vaddr) {
|
T Read(const VAddr vaddr) {
|
||||||
const u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
|
const u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
|
||||||
@ -108,14 +138,17 @@ T Read(const VAddr vaddr) {
|
|||||||
return 0;
|
return 0;
|
||||||
case PageType::Memory:
|
case PageType::Memory:
|
||||||
ASSERT_MSG(false, "Mapped memory page without a pointer @ %08X", vaddr);
|
ASSERT_MSG(false, "Mapped memory page without a pointer @ %08X", vaddr);
|
||||||
|
break;
|
||||||
case PageType::Special:
|
case PageType::Special:
|
||||||
LOG_ERROR(HW_Memory, "I/O reads aren't implemented yet @ %08X", vaddr);
|
return ReadMMIO<T>(GetMMIOHandler(vaddr), vaddr);
|
||||||
return 0;
|
|
||||||
default:
|
default:
|
||||||
UNREACHABLE();
|
UNREACHABLE();
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
template<typename T>
|
||||||
|
void WriteMMIO(MMIORegionPointer mmio_handler, VAddr addr, const T data);
|
||||||
|
|
||||||
template <typename T>
|
template <typename T>
|
||||||
void Write(const VAddr vaddr, const T data) {
|
void Write(const VAddr vaddr, const T data) {
|
||||||
u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
|
u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
|
||||||
@ -131,9 +164,10 @@ void Write(const VAddr vaddr, const T data) {
|
|||||||
return;
|
return;
|
||||||
case PageType::Memory:
|
case PageType::Memory:
|
||||||
ASSERT_MSG(false, "Mapped memory page without a pointer @ %08X", vaddr);
|
ASSERT_MSG(false, "Mapped memory page without a pointer @ %08X", vaddr);
|
||||||
|
break;
|
||||||
case PageType::Special:
|
case PageType::Special:
|
||||||
LOG_ERROR(HW_Memory, "I/O writes aren't implemented yet @ %08X", vaddr);
|
WriteMMIO<T>(GetMMIOHandler(vaddr), vaddr, data);
|
||||||
return;
|
break;
|
||||||
default:
|
default:
|
||||||
UNREACHABLE();
|
UNREACHABLE();
|
||||||
}
|
}
|
||||||
@ -191,6 +225,46 @@ void WriteBlock(const VAddr addr, const u8* data, const size_t size) {
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
u8 ReadMMIO<u8>(MMIORegionPointer mmio_handler, VAddr addr) {
|
||||||
|
return mmio_handler->Read8(addr);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
u16 ReadMMIO<u16>(MMIORegionPointer mmio_handler, VAddr addr) {
|
||||||
|
return mmio_handler->Read16(addr);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
u32 ReadMMIO<u32>(MMIORegionPointer mmio_handler, VAddr addr) {
|
||||||
|
return mmio_handler->Read32(addr);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
u64 ReadMMIO<u64>(MMIORegionPointer mmio_handler, VAddr addr) {
|
||||||
|
return mmio_handler->Read64(addr);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
void WriteMMIO<u8>(MMIORegionPointer mmio_handler, VAddr addr, const u8 data) {
|
||||||
|
mmio_handler->Write8(addr, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
void WriteMMIO<u16>(MMIORegionPointer mmio_handler, VAddr addr, const u16 data) {
|
||||||
|
mmio_handler->Write16(addr, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
void WriteMMIO<u32>(MMIORegionPointer mmio_handler, VAddr addr, const u32 data) {
|
||||||
|
mmio_handler->Write32(addr, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
template<>
|
||||||
|
void WriteMMIO<u64>(MMIORegionPointer mmio_handler, VAddr addr, const u64 data) {
|
||||||
|
mmio_handler->Write64(addr, data);
|
||||||
|
}
|
||||||
|
|
||||||
PAddr VirtualToPhysicalAddress(const VAddr addr) {
|
PAddr VirtualToPhysicalAddress(const VAddr addr) {
|
||||||
if (addr == 0) {
|
if (addr == 0) {
|
||||||
return 0;
|
return 0;
|
||||||
|
@ -23,10 +23,11 @@ void MapMemoryRegion(VAddr base, u32 size, u8* target);
|
|||||||
|
|
||||||
/**
|
/**
|
||||||
* Maps a region of the emulated process address space as a IO region.
|
* Maps a region of the emulated process address space as a IO region.
|
||||||
* @note Currently this can only be used to mark a region as being IO, since actual memory-mapped
|
* @param base The address to start mapping at. Must be page-aligned.
|
||||||
* IO isn't yet supported.
|
* @param size The amount of bytes to map. Must be page-aligned.
|
||||||
|
* @param mmio_handler The handler that backs the mapping.
|
||||||
*/
|
*/
|
||||||
void MapIoRegion(VAddr base, u32 size);
|
void MapIoRegion(VAddr base, u32 size, MMIORegionPointer mmio_handler);
|
||||||
|
|
||||||
void UnmapRegion(VAddr base, u32 size);
|
void UnmapRegion(VAddr base, u32 size);
|
||||||
|
|
||||||
|
34
src/core/mmio.h
Normal file
34
src/core/mmio.h
Normal file
@ -0,0 +1,34 @@
|
|||||||
|
// Copyright 2016 Citra Emulator Project
|
||||||
|
// Licensed under GPLv2 or any later version
|
||||||
|
// Refer to the license.txt file included.
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <memory>
|
||||||
|
|
||||||
|
#include "common/common_types.h"
|
||||||
|
|
||||||
|
namespace Memory {
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Represents a device with memory mapped IO.
|
||||||
|
* A device may be mapped to multiple regions of memory.
|
||||||
|
*/
|
||||||
|
class MMIORegion {
|
||||||
|
public:
|
||||||
|
virtual ~MMIORegion() = default;
|
||||||
|
|
||||||
|
virtual u8 Read8(VAddr addr) = 0;
|
||||||
|
virtual u16 Read16(VAddr addr) = 0;
|
||||||
|
virtual u32 Read32(VAddr addr) = 0;
|
||||||
|
virtual u64 Read64(VAddr addr) = 0;
|
||||||
|
|
||||||
|
virtual void Write8(VAddr addr, u8 data) = 0;
|
||||||
|
virtual void Write16(VAddr addr, u16 data) = 0;
|
||||||
|
virtual void Write32(VAddr addr, u32 data) = 0;
|
||||||
|
virtual void Write64(VAddr addr, u64 data) = 0;
|
||||||
|
};
|
||||||
|
|
||||||
|
using MMIORegionPointer = std::shared_ptr<MMIORegion>;
|
||||||
|
|
||||||
|
};
|
Loading…
Reference in New Issue
Block a user