mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-15 01:01:26 +01:00
392 lines
15 KiB
C++
392 lines
15 KiB
C++
|
/*
|
||
|
|
* Copyright (c) Atmosphère-NX
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms and conditions of the GNU General Public License,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||
|
|
* more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#include <stratosphere.hpp>
|
||
|
|
#include "os_vamm_manager.hpp"
|
||
|
|
|
||
|
|
#if defined(ATMOSPHERE_OS_HORIZON)
|
||
|
|
#include "os_vamm_manager_impl.os.horizon.hpp"
|
||
|
|
#elif defined(ATMOSPHERE_OS_WINDOWS)
|
||
|
|
#include "os_vamm_manager_impl.os.windows.hpp"
|
||
|
|
#elif defined(ATMOSPHERE_OS_LINUX)
|
||
|
|
#include "os_vamm_manager_impl.os.linux.hpp"
|
||
|
|
#elif defined(ATMOSPHERE_OS_MACOS)
|
||
|
|
#include "os_vamm_manager_impl.os.macos.hpp"
|
||
|
|
#else
|
||
|
|
#error "Unknown OS for VammManagerImpl"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
namespace ams::os::impl {
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
class AddressRegion : public util::IntrusiveRedBlackTreeBaseNode<AddressRegion> {
|
||
|
|
private:
|
||
|
|
uintptr_t m_address;
|
||
|
|
size_t m_size;
|
||
|
|
public:
|
||
|
|
ALWAYS_INLINE AddressRegion(uintptr_t a, size_t s) : m_address(a), m_size(s) { /* ... */ }
|
||
|
|
|
||
|
|
constexpr ALWAYS_INLINE uintptr_t GetAddressBegin() const { return m_address; }
|
||
|
|
constexpr ALWAYS_INLINE uintptr_t GetAddressEnd() const { return m_address + m_size; }
|
||
|
|
constexpr ALWAYS_INLINE size_t GetSize() const { return m_size; }
|
||
|
|
|
||
|
|
constexpr ALWAYS_INLINE bool IsContained(uintptr_t address) const {
|
||
|
|
if (address < m_address) {
|
||
|
|
return false;
|
||
|
|
} else if (address < this->GetAddressEnd()) {
|
||
|
|
return true;
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr ALWAYS_INLINE bool IsContained(uintptr_t address, size_t size) const {
|
||
|
|
const uintptr_t end = address + size;
|
||
|
|
|
||
|
|
if (!(address <= end)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (!(this->GetAddressBegin() <= address)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (!(end <= this->GetAddressEnd())) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct AddressRegionCompare {
|
||
|
|
using RedBlackKeyType = uintptr_t;
|
||
|
|
|
||
|
|
static constexpr ALWAYS_INLINE int Compare(const RedBlackKeyType a, const RedBlackKeyType &b) {
|
||
|
|
if (a < b) {
|
||
|
|
return -1;
|
||
|
|
} else if (a > b) {
|
||
|
|
return 1;
|
||
|
|
} else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static constexpr ALWAYS_INLINE int Compare(const RedBlackKeyType &a, const AddressRegion &b) {
|
||
|
|
return Compare(a, b.GetAddressBegin());
|
||
|
|
}
|
||
|
|
|
||
|
|
static constexpr ALWAYS_INLINE int Compare(const AddressRegion &a, const AddressRegion &b) {
|
||
|
|
return Compare(a.GetAddressBegin(), b.GetAddressBegin());
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
using AddressRegionTree = util::IntrusiveRedBlackTreeBaseTraits<AddressRegion>::TreeType<AddressRegionCompare>;
|
||
|
|
|
||
|
|
class DynamicUnitHeap {
|
||
|
|
private:
|
||
|
|
static constexpr size_t PhysicalMemoryUnitSize = MemoryPageSize;
|
||
|
|
private:
|
||
|
|
uintptr_t m_start;
|
||
|
|
uintptr_t m_limit;
|
||
|
|
uintptr_t m_end;
|
||
|
|
util::TypedStorage<lmem::HeapCommonHead> m_head;
|
||
|
|
lmem::HeapHandle m_heap;
|
||
|
|
public:
|
||
|
|
DynamicUnitHeap(uintptr_t address, size_t size, size_t unit_size) : m_start(address), m_end(address + size) {
|
||
|
|
/* Allocate the start of our buffer. */
|
||
|
|
VammManagerImpl::AllocatePhysicalMemoryImpl(m_start, PhysicalMemoryUnitSize);
|
||
|
|
|
||
|
|
/* Set our current limit. */
|
||
|
|
m_limit = m_start + PhysicalMemoryUnitSize;
|
||
|
|
|
||
|
|
/* Initialize our heap. */
|
||
|
|
m_heap = lmem::CreateUnitHeap(reinterpret_cast<void *>(m_start), PhysicalMemoryUnitSize, unit_size, lmem::CreateOption_None, alignof(u64), util::GetPointer(m_head));
|
||
|
|
}
|
||
|
|
|
||
|
|
void *Allocate() {
|
||
|
|
void *alloc = lmem::AllocateFromUnitHeap(m_heap);
|
||
|
|
if (alloc == nullptr) {
|
||
|
|
this->Extend();
|
||
|
|
alloc = lmem::AllocateFromUnitHeap(m_heap);
|
||
|
|
}
|
||
|
|
return alloc;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Free(void *p) {
|
||
|
|
lmem::FreeToUnitHeap(m_heap, p);
|
||
|
|
}
|
||
|
|
private:
|
||
|
|
void Extend() {
|
||
|
|
AMS_ABORT_UNLESS(m_limit < m_end);
|
||
|
|
|
||
|
|
if (R_SUCCEEDED(VammManagerImpl::AllocatePhysicalMemoryImpl(m_limit, PhysicalMemoryUnitSize))) {
|
||
|
|
m_limit += PhysicalMemoryUnitSize;
|
||
|
|
lmem::ExtendUnitHeap(m_heap, PhysicalMemoryUnitSize);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
class AddressRegionManager {
|
||
|
|
private:
|
||
|
|
static constexpr size_t UnitHeapRegionSize = 1_GB - 2_MB;
|
||
|
|
private:
|
||
|
|
uintptr_t m_start;
|
||
|
|
size_t m_size;
|
||
|
|
AddressRegionTree m_tree;
|
||
|
|
DynamicUnitHeap m_heap;
|
||
|
|
public:
|
||
|
|
AddressRegionManager(uintptr_t start, size_t size) : m_start(start), m_size(size), m_heap(start, UnitHeapRegionSize, sizeof(AddressRegion)) {
|
||
|
|
/* Insert a block in the tree for our heap. */
|
||
|
|
m_tree.insert(*(new (m_heap.Allocate()) AddressRegion(m_start, UnitHeapRegionSize)));
|
||
|
|
|
||
|
|
/* Insert a zero-size block in the tree at the end of our heap. */
|
||
|
|
m_tree.insert(*(new (m_heap.Allocate()) AddressRegion(m_start + size, 0)));
|
||
|
|
}
|
||
|
|
|
||
|
|
AddressAllocationResult Allocate(AddressRegion **out, size_t size) {
|
||
|
|
/* Allocate a region. */
|
||
|
|
void *p = m_heap.Allocate();
|
||
|
|
if (p == nullptr) {
|
||
|
|
return AddressAllocationResult_OutOfMemory;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Determine alignment for the specified size. */
|
||
|
|
const size_t align = SelectAlignment(size);
|
||
|
|
|
||
|
|
/* Iterate, looking for an appropriate region. */
|
||
|
|
auto *region = std::addressof(m_tree.back());
|
||
|
|
while (true) {
|
||
|
|
/* Get the previous region. */
|
||
|
|
auto *prev = region->GetPrev();
|
||
|
|
if (prev == nullptr) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get the space between prev and the current region. */
|
||
|
|
const uintptr_t space_start = prev->GetAddressEnd() + MemoryPageSize;
|
||
|
|
const uintptr_t space_end = region->GetAddressBegin() - MemoryPageSize;
|
||
|
|
const size_t space_size = space_end - space_start;
|
||
|
|
|
||
|
|
/* If there's enough space in the region, consider it further. */
|
||
|
|
if (space_size >= size) {
|
||
|
|
/* Determine the allocation region extents. */
|
||
|
|
const uintptr_t alloc_start = util::AlignUp(space_start, align);
|
||
|
|
const uintptr_t alloc_end = alloc_start + size;
|
||
|
|
|
||
|
|
/* If the allocation works, use it. */
|
||
|
|
if (alloc_end <= space_end) {
|
||
|
|
auto *address_region = new (p) AddressRegion(alloc_start, size);
|
||
|
|
m_tree.insert(*address_region);
|
||
|
|
*out = address_region;
|
||
|
|
return AddressAllocationResult_Success;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Otherwise, continue. */
|
||
|
|
region = prev;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* We ran out of space to allocate. */
|
||
|
|
return AddressAllocationResult_OutOfSpace;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Free(AddressRegion *region) {
|
||
|
|
m_tree.erase(m_tree.iterator_to(*region));
|
||
|
|
m_heap.Free(region);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool IsAlreadyAllocated(uintptr_t address, size_t size) const {
|
||
|
|
/* Find the first region >= our address. */
|
||
|
|
auto region = std::addressof(*(m_tree.nfind_key(address)));
|
||
|
|
if (region == nullptr) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* If the address matches, return whether the region is contained. */
|
||
|
|
if (region->GetAddressBegin() == address) {
|
||
|
|
return size <= region->GetSize();
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Otherwise, check the previous entry. */
|
||
|
|
if (region = region->GetPrev(); region == nullptr) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return region->IsContained(address, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
AddressRegion *Find(uintptr_t address) const {
|
||
|
|
return std::addressof(*(m_tree.find_key(address)));
|
||
|
|
}
|
||
|
|
private:
|
||
|
|
static constexpr size_t SelectAlignment(size_t size) {
|
||
|
|
if (size < 4_MB) {
|
||
|
|
if (size < 2_MB) {
|
||
|
|
return 64_KB;
|
||
|
|
} else {
|
||
|
|
return 2_MB;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (size < 32_MB) {
|
||
|
|
return 4_MB;
|
||
|
|
} else if (size < 1_GB) {
|
||
|
|
return 32_MB;
|
||
|
|
} else {
|
||
|
|
return 1_GB;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
constinit util::TypedStorage<AddressRegionManager> g_address_region_manager_storage = {};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
VammManager::VammManager() : m_lock(), m_region_manager(nullptr) {
|
||
|
|
/* Get the reserved region. */
|
||
|
|
VammManagerImpl::GetReservedRegionImpl(std::addressof(m_reserved_region_start), std::addressof(m_reserved_region_size));
|
||
|
|
}
|
||
|
|
|
||
|
|
void VammManager::InitializeIfEnabled() {
|
||
|
|
/* Acquire exclusive/writer access. */
|
||
|
|
std::scoped_lock lk(m_lock);
|
||
|
|
|
||
|
|
/* Initialize, if we haven't already. */
|
||
|
|
if (m_region_manager == nullptr && IsVirtualAddressMemoryEnabled()) {
|
||
|
|
m_region_manager = util::ConstructAt(g_address_region_manager_storage, m_reserved_region_start, m_reserved_region_size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Result VammManager::AllocateAddressRegion(uintptr_t *out, size_t size) {
|
||
|
|
/* Allocate an address. */
|
||
|
|
uintptr_t address;
|
||
|
|
{
|
||
|
|
/* Lock access to our region manager. */
|
||
|
|
std::scoped_lock lk(m_lock);
|
||
|
|
AMS_ASSERT(m_region_manager != nullptr);
|
||
|
|
|
||
|
|
/* Allocate an address region. */
|
||
|
|
AddressRegion *region;
|
||
|
|
switch (m_region_manager->Allocate(std::addressof(region), size)) {
|
||
|
|
case AddressAllocationResult_Success:
|
||
|
|
address = region->GetAddressBegin();
|
||
|
|
break;
|
||
|
|
case AddressAllocationResult_OutOfSpace:
|
||
|
|
R_THROW(os::ResultOutOfVirtualAddressSpace());
|
||
|
|
default:
|
||
|
|
R_THROW(os::ResultOutOfMemory());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set the output. */
|
||
|
|
*out = address;
|
||
|
|
R_SUCCEED();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result VammManager::AllocateMemory(uintptr_t *out, size_t size) {
|
||
|
|
/* Allocate an address. */
|
||
|
|
uintptr_t address;
|
||
|
|
{
|
||
|
|
/* Lock access to our region manager. */
|
||
|
|
std::scoped_lock lk(m_lock);
|
||
|
|
AMS_ASSERT(m_region_manager != nullptr);
|
||
|
|
|
||
|
|
/* Allocate an address region. */
|
||
|
|
AddressRegion *region;
|
||
|
|
switch (m_region_manager->Allocate(std::addressof(region), size)) {
|
||
|
|
case AddressAllocationResult_Success:
|
||
|
|
address = region->GetAddressBegin();
|
||
|
|
break;
|
||
|
|
case AddressAllocationResult_OutOfSpace:
|
||
|
|
R_THROW(os::ResultOutOfVirtualAddressSpace());
|
||
|
|
default:
|
||
|
|
R_THROW(os::ResultOutOfMemory());
|
||
|
|
}
|
||
|
|
ON_RESULT_FAILURE { m_region_manager->Free(region); };
|
||
|
|
|
||
|
|
/* Allocate memory at the region. */
|
||
|
|
R_TRY(VammManagerImpl::AllocatePhysicalMemoryImpl(address, size));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set the output. */
|
||
|
|
*out = address;
|
||
|
|
R_SUCCEED();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result VammManager::AllocateMemoryPages(uintptr_t address, size_t size) {
|
||
|
|
/* Acquire read access to our region manager. */
|
||
|
|
std::shared_lock lk(m_lock);
|
||
|
|
AMS_ASSERT(m_region_manager != nullptr);
|
||
|
|
|
||
|
|
/* Check that the region was previously allocated by a call to AllocateAddressRegion. */
|
||
|
|
R_UNLESS(m_region_manager->IsAlreadyAllocated(address, size), os::ResultInvalidParameter());
|
||
|
|
|
||
|
|
/* Allocate the memory. */
|
||
|
|
R_RETURN(VammManagerImpl::AllocatePhysicalMemoryImpl(address, size));
|
||
|
|
}
|
||
|
|
|
||
|
|
Result VammManager::FreeAddressRegion(uintptr_t address) {
|
||
|
|
/* Lock access to our region manager. */
|
||
|
|
std::scoped_lock lk(m_lock);
|
||
|
|
AMS_ASSERT(m_region_manager != nullptr);
|
||
|
|
|
||
|
|
/* Verify the region can be freed. */
|
||
|
|
auto *region = m_region_manager->Find(address);
|
||
|
|
R_UNLESS(region != nullptr, os::ResultInvalidParameter());
|
||
|
|
|
||
|
|
/* Free any memory present at the address. */
|
||
|
|
R_TRY(VammManagerImpl::FreePhysicalMemoryImpl(address, region->GetSize()));
|
||
|
|
|
||
|
|
/* Free the region. */
|
||
|
|
m_region_manager->Free(region);
|
||
|
|
R_SUCCEED();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result VammManager::FreeMemoryPages(uintptr_t address, size_t size) {
|
||
|
|
/* Acquire read access to our region manager. */
|
||
|
|
std::shared_lock lk(m_lock);
|
||
|
|
AMS_ASSERT(m_region_manager != nullptr);
|
||
|
|
|
||
|
|
/* Check that the region was previously allocated by a call to AllocateAddressRegion. */
|
||
|
|
R_UNLESS(m_region_manager->IsAlreadyAllocated(address, size), os::ResultInvalidParameter());
|
||
|
|
|
||
|
|
/* Free the memory. */
|
||
|
|
R_RETURN(VammManagerImpl::FreePhysicalMemoryImpl(address, size));
|
||
|
|
}
|
||
|
|
|
||
|
|
VirtualAddressMemoryResourceUsage VammManager::GetVirtualAddressMemoryResourceUsage() {
|
||
|
|
const size_t assigned_size = VammManagerImpl::GetExtraSystemResourceAssignedSize();
|
||
|
|
const size_t used_size = VammManagerImpl::GetExtraSystemResourceUsedSize();
|
||
|
|
|
||
|
|
/* Decide on an actual used size. */
|
||
|
|
const size_t reported_used_size = std::min<size_t>(assigned_size, used_size + 512_KB);
|
||
|
|
|
||
|
|
return VirtualAddressMemoryResourceUsage {
|
||
|
|
.assigned_size = assigned_size,
|
||
|
|
.used_size = reported_used_size,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
bool VammManager::IsVirtualAddressMemoryEnabled() {
|
||
|
|
return VammManagerImpl::IsVirtualAddressMemoryEnabled();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|