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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
View file

@ -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)

16
libraries/libmesosphere/include/mesosphere/kern_k_memory_layout.hpp
View file

@ -424,6 +424,22 @@ namespace ams::kern {
static ALWAYS_INLINE KMemoryRegionTree &GetVirtualLinearMemoryRegionTree() { return s_virtual_linear_tree; }
static ALWAYS_INLINE KMemoryRegionTree &GetPhysicalLinearMemoryRegionTree() { return s_physical_linear_tree; }
static ALWAYS_INLINE KMemoryRegionTree::iterator GetEnd(KVirtualAddress) {
return GetVirtualLinearMemoryRegionTree().end();
}
static ALWAYS_INLINE KMemoryRegionTree::iterator GetEnd(KPhysicalAddress) {
return GetPhysicalMemoryRegionTree().end();
}
static NOINLINE KMemoryRegionTree::iterator FindContainingRegion(KVirtualAddress address) {
return GetVirtualMemoryRegionTree().FindContainingRegion(GetInteger(address));
}
static NOINLINE KMemoryRegionTree::iterator FindContainingRegion(KPhysicalAddress address) {
return GetPhysicalMemoryRegionTree().FindContainingRegion(GetInteger(address));
}
static ALWAYS_INLINE KVirtualAddress GetLinearVirtualAddress(KPhysicalAddress address) {
return GetInteger(address) + s_linear_phys_to_virt_diff;
}

4
libraries/libmesosphere/include/mesosphere/kern_k_page_table_base.hpp
View file

@ -53,7 +53,9 @@ namespace ams::kern {
/* TODO: perm/attr operations */
};
static constexpr size_t RegionAlignment = KernelAslrAlignment;
static constexpr size_t MaxPhysicalMapAlignment = 1_GB;
static constexpr size_t RegionAlignment = 2_MB;
static_assert(RegionAlignment == KernelAslrAlignment);
struct PageLinkedList {
private: