From 326e7c70208865b013e138972b25687d805488d0 Mon Sep 17 00:00:00 2001 From: Yuri Kunde Schlesner Date: Wed, 21 Jun 2017 20:21:49 -0700 Subject: Memory: Make PhysicalToVirtualAddress return a boost::optional And fix a few places in the code to take advantage of that. --- src/core/memory.cpp | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) (limited to 'src/core/memory.cpp') diff --git a/src/core/memory.cpp b/src/core/memory.cpp index b8438e490..7d849d55f 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -268,7 +268,8 @@ bool IsValidVirtualAddress(const VAddr vaddr) { } bool IsValidPhysicalAddress(const PAddr paddr) { - return IsValidVirtualAddress(PhysicalToVirtualAddress(paddr)); + boost::optional vaddr = PhysicalToVirtualAddress(paddr); + return vaddr && IsValidVirtualAddress(*vaddr); } u8* GetPointer(const VAddr vaddr) { @@ -301,7 +302,8 @@ std::string ReadCString(VAddr vaddr, std::size_t max_length) { u8* GetPhysicalPointer(PAddr address) { // TODO(Subv): This call should not go through the application's memory mapping. - return GetPointer(PhysicalToVirtualAddress(address)); + boost::optional vaddr = PhysicalToVirtualAddress(address); + return vaddr ? GetPointer(*vaddr) : nullptr; } void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) { @@ -312,8 +314,12 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) { u32 num_pages = ((start + size - 1) >> PAGE_BITS) - (start >> PAGE_BITS) + 1; PAddr paddr = start; - for (unsigned i = 0; i < num_pages; ++i) { - VAddr vaddr = PhysicalToVirtualAddress(paddr); + for (unsigned i = 0; i < num_pages; ++i, paddr += PAGE_SIZE) { + boost::optional maybe_vaddr = PhysicalToVirtualAddress(paddr); + if (!maybe_vaddr) + continue; + VAddr vaddr = *maybe_vaddr; + u8& res_count = current_page_table->cached_res_count[vaddr >> PAGE_BITS]; ASSERT_MSG(count_delta <= UINT8_MAX - res_count, "Rasterizer resource cache counter overflow!"); @@ -353,7 +359,6 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) { UNREACHABLE(); } } - paddr += PAGE_SIZE; } } @@ -687,7 +692,7 @@ PAddr VirtualToPhysicalAddress(const VAddr addr) { return addr | 0x80000000; } -VAddr PhysicalToVirtualAddress(const PAddr addr) { +boost::optional PhysicalToVirtualAddress(const PAddr addr) { if (addr == 0) { return 0; } else if (addr >= VRAM_PADDR && addr < VRAM_PADDR_END) { @@ -702,9 +707,7 @@ VAddr PhysicalToVirtualAddress(const PAddr addr) { return addr - N3DS_EXTRA_RAM_PADDR + N3DS_EXTRA_RAM_VADDR; } - LOG_ERROR(HW_Memory, "Unknown physical address @ 0x%08X", addr); - // To help with debugging, set bit on address so that it's obviously invalid. - return addr | 0x80000000; + return boost::none; } } // namespace -- cgit v1.2.3 From 6ae0086b39769f5f11d7d4bb7115be8bf2565afe Mon Sep 17 00:00:00 2001 From: Yuri Kunde Schlesner Date: Wed, 21 Jun 2017 20:25:46 -0700 Subject: Memory: Add TryVirtualToPhysicalAddress, returning a boost::optional --- src/core/memory.cpp | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) (limited to 'src/core/memory.cpp') diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 7d849d55f..42ca69e00 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -670,7 +670,7 @@ void WriteMMIO(MMIORegionPointer mmio_handler, VAddr addr, const u64 data) mmio_handler->Write64(addr, data); } -PAddr VirtualToPhysicalAddress(const VAddr addr) { +boost::optional TryVirtualToPhysicalAddress(const VAddr addr) { if (addr == 0) { return 0; } else if (addr >= VRAM_VADDR && addr < VRAM_VADDR_END) { @@ -687,9 +687,17 @@ PAddr VirtualToPhysicalAddress(const VAddr addr) { return addr - N3DS_EXTRA_RAM_VADDR + N3DS_EXTRA_RAM_PADDR; } - LOG_ERROR(HW_Memory, "Unknown virtual address @ 0x%08X", addr); - // To help with debugging, set bit on address so that it's obviously invalid. - return addr | 0x80000000; + return boost::none; +} + +PAddr VirtualToPhysicalAddress(const VAddr addr) { + auto paddr = TryVirtualToPhysicalAddress(addr); + if (!paddr) { + LOG_ERROR(HW_Memory, "Unknown virtual address @ 0x%08X", addr); + // To help with debugging, set bit on address so that it's obviously invalid. + return addr | 0x80000000; + } + return *paddr; } boost::optional PhysicalToVirtualAddress(const PAddr addr) { -- cgit v1.2.3 From d5531357487a144cf962ce08a912417fd5e61570 Mon Sep 17 00:00:00 2001 From: Yuri Kunde Schlesner Date: Wed, 21 Jun 2017 22:48:00 -0700 Subject: Memory: Add function to flush a virtual range from the rasterizer cache This is slightly more ergonomic to use, correctly handles virtual regions which are disjoint in physical addressing space, and checks only regions which can be cached by the rasterizer. --- src/core/memory.cpp | 91 ++++++++++++++++++++++++++++++----------------------- 1 file changed, 52 insertions(+), 39 deletions(-) (limited to 'src/core/memory.cpp') diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 42ca69e00..38fe9e231 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -83,19 +83,13 @@ static void MapPages(u32 base, u32 size, u8* memory, PageType type) { LOG_DEBUG(HW_Memory, "Mapping %p onto %08X-%08X", memory, base * PAGE_SIZE, (base + size) * PAGE_SIZE); - u32 end = base + size; + RasterizerFlushVirtualRegion(base << PAGE_BITS, size * PAGE_SIZE, + FlushMode::FlushAndInvalidate); + u32 end = base + size; while (base != end) { ASSERT_MSG(base < PAGE_TABLE_NUM_ENTRIES, "out of range mapping at %08X", base); - // Since pages are unmapped on shutdown after video core is shutdown, the renderer may be - // null here - if (current_page_table->attributes[base] == PageType::RasterizerCachedMemory || - current_page_table->attributes[base] == PageType::RasterizerCachedSpecial) { - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(base << PAGE_BITS), - PAGE_SIZE); - } - current_page_table->attributes[base] = type; current_page_table->pointers[base] = memory; current_page_table->cached_res_count[base] = 0; @@ -189,7 +183,7 @@ T Read(const VAddr vaddr) { ASSERT_MSG(false, "Mapped memory page without a pointer @ %08X", vaddr); break; case PageType::RasterizerCachedMemory: { - RasterizerFlushRegion(VirtualToPhysicalAddress(vaddr), sizeof(T)); + RasterizerFlushVirtualRegion(vaddr, sizeof(T), FlushMode::Flush); T value; std::memcpy(&value, GetPointerFromVMA(vaddr), sizeof(T)); @@ -198,8 +192,7 @@ T Read(const VAddr vaddr) { case PageType::Special: return ReadMMIO(GetMMIOHandler(vaddr), vaddr); case PageType::RasterizerCachedSpecial: { - RasterizerFlushRegion(VirtualToPhysicalAddress(vaddr), sizeof(T)); - + RasterizerFlushVirtualRegion(vaddr, sizeof(T), FlushMode::Flush); return ReadMMIO(GetMMIOHandler(vaddr), vaddr); } default: @@ -229,8 +222,7 @@ void Write(const VAddr vaddr, const T data) { ASSERT_MSG(false, "Mapped memory page without a pointer @ %08X", vaddr); break; case PageType::RasterizerCachedMemory: { - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(vaddr), sizeof(T)); - + RasterizerFlushVirtualRegion(vaddr, sizeof(T), FlushMode::FlushAndInvalidate); std::memcpy(GetPointerFromVMA(vaddr), &data, sizeof(T)); break; } @@ -238,8 +230,7 @@ void Write(const VAddr vaddr, const T data) { WriteMMIO(GetMMIOHandler(vaddr), vaddr, data); break; case PageType::RasterizerCachedSpecial: { - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(vaddr), sizeof(T)); - + RasterizerFlushVirtualRegion(vaddr, sizeof(T), FlushMode::FlushAndInvalidate); WriteMMIO(GetMMIOHandler(vaddr), vaddr, data); break; } @@ -369,11 +360,48 @@ void RasterizerFlushRegion(PAddr start, u32 size) { } void RasterizerFlushAndInvalidateRegion(PAddr start, u32 size) { + // Since pages are unmapped on shutdown after video core is shutdown, the renderer may be + // null here if (VideoCore::g_renderer != nullptr) { VideoCore::g_renderer->Rasterizer()->FlushAndInvalidateRegion(start, size); } } +void RasterizerFlushVirtualRegion(VAddr start, u32 size, FlushMode mode) { + // Since pages are unmapped on shutdown after video core is shutdown, the renderer may be + // null here + if (VideoCore::g_renderer != nullptr) { + VAddr end = start + size; + + auto CheckRegion = [&](VAddr region_start, VAddr region_end) { + if (start >= region_end || end <= region_start) { + // No overlap with region + return; + } + + VAddr overlap_start = std::max(start, region_start); + VAddr overlap_end = std::min(end, region_end); + + PAddr physical_start = TryVirtualToPhysicalAddress(overlap_start).value(); + u32 overlap_size = overlap_end - overlap_start; + + auto* rasterizer = VideoCore::g_renderer->Rasterizer(); + switch (mode) { + case FlushMode::Flush: + rasterizer->FlushRegion(physical_start, overlap_size); + break; + case FlushMode::FlushAndInvalidate: + rasterizer->FlushAndInvalidateRegion(physical_start, overlap_size); + break; + } + }; + + CheckRegion(LINEAR_HEAP_VADDR, LINEAR_HEAP_VADDR_END); + CheckRegion(NEW_LINEAR_HEAP_VADDR, NEW_LINEAR_HEAP_VADDR_END); + CheckRegion(VRAM_VADDR, VRAM_VADDR_END); + } +} + u8 Read8(const VAddr addr) { return Read(addr); } @@ -420,16 +448,13 @@ void ReadBlock(const VAddr src_addr, void* dest_buffer, const size_t size) { break; } case PageType::RasterizerCachedMemory: { - RasterizerFlushRegion(VirtualToPhysicalAddress(current_vaddr), copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::Flush); std::memcpy(dest_buffer, GetPointerFromVMA(current_vaddr), copy_amount); break; } case PageType::RasterizerCachedSpecial: { DEBUG_ASSERT(GetMMIOHandler(current_vaddr)); - - RasterizerFlushRegion(VirtualToPhysicalAddress(current_vaddr), copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::Flush); GetMMIOHandler(current_vaddr)->ReadBlock(current_vaddr, dest_buffer, copy_amount); break; } @@ -490,18 +515,13 @@ void WriteBlock(const VAddr dest_addr, const void* src_buffer, const size_t size break; } case PageType::RasterizerCachedMemory: { - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(current_vaddr), - copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::FlushAndInvalidate); std::memcpy(GetPointerFromVMA(current_vaddr), src_buffer, copy_amount); break; } case PageType::RasterizerCachedSpecial: { DEBUG_ASSERT(GetMMIOHandler(current_vaddr)); - - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(current_vaddr), - copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::FlushAndInvalidate); GetMMIOHandler(current_vaddr)->WriteBlock(current_vaddr, src_buffer, copy_amount); break; } @@ -547,18 +567,13 @@ void ZeroBlock(const VAddr dest_addr, const size_t size) { break; } case PageType::RasterizerCachedMemory: { - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(current_vaddr), - copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::FlushAndInvalidate); std::memset(GetPointerFromVMA(current_vaddr), 0, copy_amount); break; } case PageType::RasterizerCachedSpecial: { DEBUG_ASSERT(GetMMIOHandler(current_vaddr)); - - RasterizerFlushAndInvalidateRegion(VirtualToPhysicalAddress(current_vaddr), - copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::FlushAndInvalidate); GetMMIOHandler(current_vaddr)->WriteBlock(current_vaddr, zeros.data(), copy_amount); break; } @@ -603,15 +618,13 @@ void CopyBlock(VAddr dest_addr, VAddr src_addr, const size_t size) { break; } case PageType::RasterizerCachedMemory: { - RasterizerFlushRegion(VirtualToPhysicalAddress(current_vaddr), copy_amount); - + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::Flush); WriteBlock(dest_addr, GetPointerFromVMA(current_vaddr), copy_amount); break; } case PageType::RasterizerCachedSpecial: { DEBUG_ASSERT(GetMMIOHandler(current_vaddr)); - - RasterizerFlushRegion(VirtualToPhysicalAddress(current_vaddr), copy_amount); + RasterizerFlushVirtualRegion(current_vaddr, copy_amount, FlushMode::Flush); std::vector buffer(copy_amount); GetMMIOHandler(current_vaddr)->ReadBlock(current_vaddr, buffer.data(), buffer.size()); -- cgit v1.2.3