mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-09-20 07:49:26 -04:00
224 lines
10 KiB
C++
224 lines
10 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2018-2020 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 <mesosphere.hpp>
|
||
|
|
|
||
|
|
namespace ams::kern {
|
||
|
|
|
||
|
|
bool KMemoryBlockTree::Insert(uintptr_t address, size_t size, u32 type_id, u32 new_attr, u32 old_attr) {
|
||
|
|
/* Locate the memory block that contains the address. */
|
||
|
|
auto it = this->FindContainingBlock(address);
|
||
|
|
|
||
|
|
/* We require that the old attr is correct. */
|
||
|
|
if (it->GetAttributes() != old_attr) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* We further require that the block can be split from the old block. */
|
||
|
|
const uintptr_t inserted_block_end = address + size;
|
||
|
|
const uintptr_t inserted_block_last = inserted_block_end - 1;
|
||
|
|
if (it->GetLastAddress() < inserted_block_last) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Further, we require that the type id is a valid transformation. */
|
||
|
|
if (!it->CanDerive(type_id)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Cache information from the block before we remove it. */
|
||
|
|
KMemoryBlock *cur_block = std::addressof(*it);
|
||
|
|
const uintptr_t old_address = it->GetAddress();
|
||
|
|
const size_t old_size = it->GetSize();
|
||
|
|
const uintptr_t old_end = old_address + old_size;
|
||
|
|
const uintptr_t old_last = old_end - 1;
|
||
|
|
const uintptr_t old_pair = it->GetPairAddress();
|
||
|
|
const u32 old_type = it->GetType();
|
||
|
|
|
||
|
|
/* Erase the existing block from the tree. */
|
||
|
|
this->erase(it);
|
||
|
|
|
||
|
|
/* If we need to insert a block before the region, do so. */
|
||
|
|
if (old_address != address) {
|
||
|
|
new (cur_block) KMemoryBlock(old_address, address - old_address, old_pair, old_attr, old_type);
|
||
|
|
this->insert(*cur_block);
|
||
|
|
cur_block = KMemoryLayout::GetMemoryBlockAllocator().Allocate();
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Insert a new block. */
|
||
|
|
const uintptr_t new_pair = (old_pair != std::numeric_limits<uintptr_t>::max()) ? old_pair + (address - old_address) : old_pair;
|
||
|
|
new (cur_block) KMemoryBlock(address, size, new_pair, new_attr, type_id);
|
||
|
|
this->insert(*cur_block);
|
||
|
|
|
||
|
|
/* If we need to insert a block after the region, do so. */
|
||
|
|
if (old_last != inserted_block_last) {
|
||
|
|
const uintptr_t after_pair = (old_pair != std::numeric_limits<uintptr_t>::max()) ? old_pair + (inserted_block_end - old_address) : old_pair;
|
||
|
|
this->insert(*KMemoryLayout::GetMemoryBlockAllocator().Create(inserted_block_end, old_end - inserted_block_end, after_pair, old_attr, old_type));
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
KVirtualAddress KMemoryBlockTree::GetRandomAlignedRegion(size_t size, size_t alignment, u32 type_id) {
|
||
|
|
/* We want to find the total extents of the type id. */
|
||
|
|
const auto extents = this->GetDerivedRegionExtents(type_id);
|
||
|
|
|
||
|
|
/* Ensure that our alignment is correct. */
|
||
|
|
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(extents.first_block->GetAddress(), alignment));
|
||
|
|
|
||
|
|
const uintptr_t first_address = extents.first_block->GetAddress();
|
||
|
|
const uintptr_t last_address = extents.last_block->GetLastAddress();
|
||
|
|
|
||
|
|
while (true) {
|
||
|
|
const uintptr_t candidate = util::AlignDown(KSystemControl::Init::GenerateRandomRange(first_address, last_address), alignment);
|
||
|
|
|
||
|
|
/* Ensure that the candidate doesn't overflow with the size. */
|
||
|
|
if (!(candidate < candidate + size)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
const uintptr_t candidate_last = candidate + size - 1;
|
||
|
|
|
||
|
|
/* Ensure that the candidate fits within the region. */
|
||
|
|
if (candidate_last > last_address) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Locate the candidate block, and ensure it fits. */
|
||
|
|
const KMemoryBlock *candidate_block = std::addressof(*this->FindContainingBlock(candidate));
|
||
|
|
if (candidate_last > candidate_block->GetLastAddress()) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure that the block has the correct type id. */
|
||
|
|
if (candidate_block->GetType() != type_id)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
return candidate;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void KMemoryLayout::InitializeLinearMemoryBlockTrees(KPhysicalAddress aligned_linear_phys_start, KVirtualAddress linear_virtual_start) {
|
||
|
|
/* Set static differences. */
|
||
|
|
s_linear_phys_to_virt_diff = GetInteger(linear_virtual_start) - GetInteger(aligned_linear_phys_start);
|
||
|
|
s_linear_virt_to_phys_diff = GetInteger(aligned_linear_phys_start) - GetInteger(linear_virtual_start);
|
||
|
|
|
||
|
|
/* Initialize linear trees. */
|
||
|
|
for (auto &block : GetPhysicalMemoryBlockTree()) {
|
||
|
|
if (!block.HasTypeAttribute(KMemoryRegionAttr_LinearMapped)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
GetPhysicalLinearMemoryBlockTree().insert(*GetMemoryBlockAllocator().Create(block.GetAddress(), block.GetSize(), block.GetAttributes(), block.GetType()));
|
||
|
|
}
|
||
|
|
|
||
|
|
for (auto &block : GetVirtualMemoryBlockTree()) {
|
||
|
|
if (!block.IsDerivedFrom(KMemoryRegionType_Dram)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
GetVirtualLinearMemoryBlockTree().insert(*GetMemoryBlockAllocator().Create(block.GetAddress(), block.GetSize(), block.GetAttributes(), block.GetType()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace init {
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
|
||
|
|
constexpr PageTableEntry KernelRwDataAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable);
|
||
|
|
|
||
|
|
constexpr size_t CoreLocalRegionAlign = PageSize;
|
||
|
|
constexpr size_t CoreLocalRegionSize = PageSize * (1 + cpu::NumCores);
|
||
|
|
constexpr size_t CoreLocalRegionSizeWithGuards = CoreLocalRegionSize + 2 * PageSize;
|
||
|
|
constexpr size_t CoreLocalRegionBoundsAlign = 1_GB;
|
||
|
|
/* TODO: static_assert(CoreLocalRegionSize == sizeof(KCoreLocalRegion)); */
|
||
|
|
|
||
|
|
KVirtualAddress GetCoreLocalRegionVirtualAddress() {
|
||
|
|
while (true) {
|
||
|
|
const uintptr_t candidate_start = GetInteger(KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegion(CoreLocalRegionSizeWithGuards, CoreLocalRegionAlign, KMemoryRegionType_None));
|
||
|
|
const uintptr_t candidate_end = candidate_start + CoreLocalRegionSizeWithGuards;
|
||
|
|
const uintptr_t candidate_last = candidate_end - 1;
|
||
|
|
|
||
|
|
const KMemoryBlock *containing_block = std::addressof(*KMemoryLayout::GetVirtualMemoryBlockTree().FindContainingBlock(candidate_start));
|
||
|
|
|
||
|
|
if (candidate_last > containing_block->GetLastAddress()) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (containing_block->GetType() != KMemoryRegionType_None) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (util::AlignDown(candidate_start, CoreLocalRegionBoundsAlign) != util::AlignDown(candidate_last, CoreLocalRegionBoundsAlign)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (containing_block->GetAddress() > util::AlignDown(candidate_start, CoreLocalRegionBoundsAlign)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (util::AlignUp(candidate_last, CoreLocalRegionBoundsAlign) - 1 > containing_block->GetLastAddress()) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return candidate_start + PageSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void SetupCoreLocalRegionMemoryBlocks(KInitialPageTable &page_table, KInitialPageAllocator &page_allocator) {
|
||
|
|
const KVirtualAddress core_local_virt_start = GetCoreLocalRegionVirtualAddress();
|
||
|
|
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(core_local_virt_start), CoreLocalRegionSize, KMemoryRegionType_CoreLocal));
|
||
|
|
|
||
|
|
/* Allocate a page for each core. */
|
||
|
|
KPhysicalAddress core_local_region_start_phys[cpu::NumCores] = {};
|
||
|
|
for (size_t i = 0; i < cpu::NumCores; i++) {
|
||
|
|
core_local_region_start_phys[i] = page_allocator.Allocate();
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Allocate an l1 page table for each core. */
|
||
|
|
KPhysicalAddress core_l1_ttbr1_phys[cpu::NumCores] = {};
|
||
|
|
core_l1_ttbr1_phys[0] = util::AlignDown(cpu::GetTtbr1El1(), PageSize);
|
||
|
|
for (size_t i = 1; i < cpu::NumCores; i++) {
|
||
|
|
core_l1_ttbr1_phys[i] = page_allocator.Allocate();
|
||
|
|
std::memcpy(reinterpret_cast<void *>(GetInteger(core_l1_ttbr1_phys[i])), reinterpret_cast<void *>(GetInteger(core_l1_ttbr1_phys[0])), PageSize);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Use the l1 page table for each core to map the core local region for each core. */
|
||
|
|
for (size_t i = 0; i < cpu::NumCores; i++) {
|
||
|
|
KInitialPageTable temp_pt(core_l1_ttbr1_phys[i], KInitialPageTable::NoClear{});
|
||
|
|
temp_pt.Map(core_local_virt_start, PageSize, core_l1_ttbr1_phys[i], KernelRwDataAttribute, page_allocator);
|
||
|
|
for (size_t j = 0; j < cpu::NumCores; j++) {
|
||
|
|
temp_pt.Map(core_local_virt_start + (j + 1) * PageSize, PageSize, core_l1_ttbr1_phys[j], KernelRwDataAttribute, page_allocator);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Setup the InitArguments. */
|
||
|
|
SetInitArguments(static_cast<s32>(i), core_local_region_start_phys[i], GetInteger(core_l1_ttbr1_phys[i]));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure the InitArguments are flushed to cache. */
|
||
|
|
StoreInitArguments();
|
||
|
|
}
|
||
|
|
|
||
|
|
void SetupPoolPartitionMemoryBlocks() {
|
||
|
|
/* TODO */
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|