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Merge pull request #4413 from wwylele/memory-global

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Fix shared font addres; Remove global PhysicalToVirtualAddress
This commit is contained in:
Weiyi Wang 2018-11-13 00:14:24 -05:00 • committed by GitHub
commit fe47243690
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4 changed files with 72 additions and 78 deletions
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5
src/core/hle/kernel/shared_memory.cpp
View file

@ -142,7 +142,10 @@ ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermi
if (base_address == 0 && target_address == 0) {
// Calculate the address at which to map the memory block.
target_address = linear_heap_phys_offset + target_process->GetLinearHeapAreaAddress();
// Note: even on new firmware versions, the target address is still in the old linear heap
// region. This exception is made to keep the shared font compatibility. See
// APT:GetSharedFont for detail.
target_address = linear_heap_phys_offset + Memory::LINEAR_HEAP_VADDR;
}
auto vma = target_process->vm_manager.FindVMA(target_address);

15
src/core/hle/service/apt/apt.cpp
View file

@ -207,10 +207,17 @@ void Module::Interface::GetSharedFont(Kernel::HLERequestContext& ctx) {
// The shared font has to be relocated to the new address before being passed to the
// application.
auto maybe_vaddr = Memory::PhysicalToVirtualAddress(
apt->shared_font_mem->linear_heap_phys_offset + Memory::FCRAM_PADDR);
ASSERT(maybe_vaddr);
VAddr target_address = *maybe_vaddr;
// Note: the target address is still in the old linear heap region even on new firmware
// versions. This exception is made for shared font to resolve the following compatibility
// issue:
// The linear heap region changes depending on the kernel version marked in application's
// exheader (not the actual version the application is running on). If an application with old
// kernel version and an applet with new kernel version run at the same time, and they both use
// shared font, different linear heap region would have required shared font to relocate
// according to two different addresses at the same time, which is impossible.
VAddr target_address =
apt->shared_font_mem->linear_heap_phys_offset + Memory::LINEAR_HEAP_VADDR;
if (!apt->shared_font_relocated) {
BCFNT::RelocateSharedFont(apt->shared_font_mem, target_address);
apt->shared_font_relocated = true;

125
src/core/memory.cpp
View file

@ -318,6 +318,25 @@ u8* GetPhysicalPointer(PAddr address) {
return target_pointer;
}
/// For a rasterizer-accessible PAddr, gets a list of all possible VAddr
static std::vector<VAddr> PhysicalToVirtualAddressForRasterizer(PAddr addr) {
if (addr >= VRAM_PADDR && addr < VRAM_PADDR_END) {
return {addr - VRAM_PADDR + VRAM_VADDR};
}
if (addr >= FCRAM_PADDR && addr < FCRAM_PADDR_END) {
return {addr - FCRAM_PADDR + LINEAR_HEAP_VADDR, addr - FCRAM_PADDR + NEW_LINEAR_HEAP_VADDR};
}
if (addr >= FCRAM_PADDR_END && addr < FCRAM_N3DS_PADDR_END) {
return {addr - FCRAM_PADDR + NEW_LINEAR_HEAP_VADDR};
}
// While the physical <-> virtual mapping is 1:1 for the regions supported by the cache,
// some games (like Pokemon Super Mystery Dungeon) will try to use textures that go beyond
// the end address of VRAM, causing the Virtual->Physical translation to fail when flushing
// parts of the texture.
LOG_ERROR(HW_Memory, "Trying to use invalid physical address for rasterizer: {:08X}", addr);
return {};
}
void RasterizerMarkRegionCached(PAddr start, u32 size, bool cached) {
if (start == 0) {
return;
@ -327,57 +346,46 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, bool cached) {
PAddr paddr = start;
for (unsigned i = 0; i < num_pages; ++i, paddr += PAGE_SIZE) {
std::optional<VAddr> maybe_vaddr = PhysicalToVirtualAddress(paddr);
// While the physical <-> virtual mapping is 1:1 for the regions supported by the cache,
// some games (like Pokemon Super Mystery Dungeon) will try to use textures that go beyond
// the end address of VRAM, causing the Virtual->Physical translation to fail when flushing
// parts of the texture.
if (!maybe_vaddr) {
LOG_ERROR(HW_Memory,
"Trying to flush a cached region to an invalid physical address {:08X}",
paddr);
continue;
}
VAddr vaddr = *maybe_vaddr;
for (VAddr vaddr : PhysicalToVirtualAddressForRasterizer(paddr)) {
PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS];
PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS];
if (cached) {
// Switch page type to cached if now cached
switch (page_type) {
case PageType::Unmapped:
// It is not necessary for a process to have this region mapped into its address
// space, for example, a system module need not have a VRAM mapping.
break;
case PageType::Memory:
page_type = PageType::RasterizerCachedMemory;
current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr;
break;
default:
UNREACHABLE();
}
} else {
// Switch page type to uncached if now uncached
switch (page_type) {
case PageType::Unmapped:
// It is not necessary for a process to have this region mapped into its address
// space, for example, a system module need not have a VRAM mapping.
break;
case PageType::RasterizerCachedMemory: {
u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK);
if (pointer == nullptr) {
// It's possible that this function has been called while updating the pagetable
// after unmapping a VMA. In that case the underlying VMA will no longer exist,
// and we should just leave the pagetable entry blank.
page_type = PageType::Unmapped;
} else {
page_type = PageType::Memory;
current_page_table->pointers[vaddr >> PAGE_BITS] = pointer;
if (cached) {
// Switch page type to cached if now cached
switch (page_type) {
case PageType::Unmapped:
// It is not necessary for a process to have this region mapped into its address
// space, for example, a system module need not have a VRAM mapping.
break;
case PageType::Memory:
page_type = PageType::RasterizerCachedMemory;
current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr;
break;
default:
UNREACHABLE();
}
} else {
// Switch page type to uncached if now uncached
switch (page_type) {
case PageType::Unmapped:
// It is not necessary for a process to have this region mapped into its address
// space, for example, a system module need not have a VRAM mapping.
break;
case PageType::RasterizerCachedMemory: {
u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK);
if (pointer == nullptr) {
// It's possible that this function has been called while updating the
// pagetable after unmapping a VMA. In that case the underlying VMA will no
// longer exist, and we should just leave the pagetable entry blank.
page_type = PageType::Unmapped;
} else {
page_type = PageType::Memory;
current_page_table->pointers[vaddr >> PAGE_BITS] = pointer;
}
break;
}
default:
UNREACHABLE();
}
break;
}
default:
UNREACHABLE();
}
}
}
@ -820,25 +828,6 @@ PAddr VirtualToPhysicalAddress(const VAddr addr) {
return *paddr;
}
std::optional<VAddr> PhysicalToVirtualAddress(const PAddr addr) {
if (addr == 0) {
return 0;
} else if (addr >= VRAM_PADDR && addr < VRAM_PADDR_END) {
return addr - VRAM_PADDR + VRAM_VADDR;
} else if (addr >= FCRAM_PADDR && addr < FCRAM_PADDR_END) {
return addr - FCRAM_PADDR +
Core::System::GetInstance().Kernel().GetCurrentProcess()->GetLinearHeapAreaAddress();
} else if (addr >= DSP_RAM_PADDR && addr < DSP_RAM_PADDR_END) {
return addr - DSP_RAM_PADDR + DSP_RAM_VADDR;
} else if (addr >= IO_AREA_PADDR && addr < IO_AREA_PADDR_END) {
return addr - IO_AREA_PADDR + IO_AREA_VADDR;
} else if (addr >= N3DS_EXTRA_RAM_PADDR && addr < N3DS_EXTRA_RAM_PADDR_END) {
return addr - N3DS_EXTRA_RAM_PADDR + N3DS_EXTRA_RAM_VADDR;
}
return {};
}
u32 GetFCRAMOffset(u8* pointer) {
ASSERT(pointer >= fcram.data() && pointer < fcram.data() + fcram.size());
return pointer - fcram.data();

5
src/core/memory.h
View file

@ -228,11 +228,6 @@ std::optional<PAddr> TryVirtualToPhysicalAddress(VAddr addr);
*/
PAddr VirtualToPhysicalAddress(VAddr addr);
/**
* Undoes a mapping performed by VirtualToPhysicalAddress().
*/
std::optional<VAddr> PhysicalToVirtualAddress(PAddr paddr);
/**
* Gets a pointer to the memory region beginning at the specified physical address.
*/