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kern: implement MapIo

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This commit is contained in:
Michael Scire
2020-02-19 05:35:22 -08:00
parent 905ce0eeea
commit b99bcbc619
4 changed files with 104 additions and 8 deletions
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16
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table.hpp
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@@ -28,11 +28,7 @@ namespace ams::kern::arch::arm64 {
public:
using TraversalEntry = KPageTableImpl::TraversalEntry;
using TraversalContext = KPageTableImpl::TraversalContext;
private:
KPageTableManager *manager;
u64 ttbr;
u8 asid;
private:
enum BlockType {
BlockType_L3Block,
BlockType_L3ContiguousBlock,
@@ -64,6 +60,10 @@ namespace ams::kern::arch::arm64 {
[BlockType_L1Block] = L1BlockSize,
};
static constexpr BlockType GetMaxBlockType() {
return BlockType_L1Block;
}
static constexpr size_t GetBlockSize(BlockType type) {
return BlockSizes[type];
}
@@ -91,6 +91,10 @@ namespace ams::kern::arch::arm64 {
MESOSPHERE_ASSERT(alignment < L1BlockSize);
return KPageTable::GetBlockSize(static_cast<KPageTable::BlockType>(KPageTable::GetBlockType(alignment) + 1));
}
private:
KPageTableManager *manager;
u64 ttbr;
u8 asid;
protected:
virtual Result Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, KPhysicalAddress phys_addr, bool is_pa_valid, const KPageProperties properties, OperationType operation, bool reuse_ll) override;
virtual Result Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, const KPageGroup *page_group, const KPageProperties properties, OperationType operation, bool reuse_ll) override;
@@ -111,7 +115,7 @@ namespace ams::kern::arch::arm64 {
/* Set page attribute. */
if (properties.io) {
MESOSPHERE_ABORT_UNLESS(!properties.io);
MESOSPHERE_ABORT_UNLESS(!properties.uncached);
MESOSPHERE_ABORT_UNLESS((properties.perm & (KMemoryPermission_KernelExecute | KMemoryPermission_UserExecute)) == 0);
entry.SetPageAttribute(PageTableEntry::PageAttribute_Device_nGnRnE)