mirror of
https://github.com/Atmosphere-NX/Atmosphere
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94 lines
3.9 KiB
C++
94 lines
3.9 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <mesosphere/kern_common.hpp>
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#include <mesosphere/kern_k_auto_object.hpp>
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#include <mesosphere/kern_slab_helpers.hpp>
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namespace ams::kern {
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class KProcess;
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class KIoPool;
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class KIoRegion final : public KAutoObjectWithSlabHeapAndContainer<KIoRegion, KAutoObjectWithList>, public util::IntrusiveRedBlackTreeBaseNode<KIoRegion> {
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MESOSPHERE_AUTOOBJECT_TRAITS(KIoRegion, KAutoObject);
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private:
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friend class KProcess;
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friend class KIoPool;
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public:
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using RedBlackKeyType = KPhysicalAddress;
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static constexpr ALWAYS_INLINE RedBlackKeyType GetRedBlackKey(const RedBlackKeyType &v) { return v; }
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static constexpr ALWAYS_INLINE RedBlackKeyType GetRedBlackKey(const KIoRegion &v) { return v.GetAddress(); }
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template<typename T> requires (std::same_as<T, KIoRegion> || std::same_as<T, RedBlackKeyType>)
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static constexpr ALWAYS_INLINE int Compare(const T &lhs, const KIoRegion &rhs) {
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const RedBlackKeyType lval = GetRedBlackKey(lhs);
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const RedBlackKeyType rval = GetRedBlackKey(rhs);
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if (lval < rval) {
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return -1;
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} else if (lval == rval) {
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return 0;
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} else {
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return 1;
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}
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}
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private:
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KLightLock m_lock;
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KIoPool *m_pool;
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KPhysicalAddress m_physical_address;
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size_t m_size;
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ams::svc::MemoryMapping m_mapping;
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ams::svc::MemoryPermission m_permission;
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bool m_is_initialized;
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bool m_is_mapped;
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util::IntrusiveListNode m_process_list_node;
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public:
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explicit KIoRegion() : m_pool(nullptr), m_is_initialized(false) { /* ... */ }
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Result Initialize(KIoPool *pool, KPhysicalAddress phys_addr, size_t size, ams::svc::MemoryMapping mapping, ams::svc::MemoryPermission perm);
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void Finalize();
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bool IsInitialized() const { return m_is_initialized; }
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static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
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Result Map(KProcessAddress address, size_t size, ams::svc::MemoryPermission map_perm);
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Result Unmap(KProcessAddress address, size_t size);
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constexpr bool Overlaps(KPhysicalAddress address, size_t size) const {
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return m_physical_address <= (address + size - 1) && address <= (m_physical_address + m_size - 1);
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}
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constexpr ALWAYS_INLINE KPhysicalAddress GetAddress() const { return m_physical_address; }
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constexpr ALWAYS_INLINE size_t GetSize() const { return m_size; }
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constexpr uintptr_t GetHint() const {
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/* TODO: Is this architecture specific? */
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if (m_size >= 2_MB) {
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return GetInteger(m_physical_address) & (2_MB - 1);
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} else if (m_size >= 64_KB) {
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return GetInteger(m_physical_address) & (64_KB - 1);
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} else if (m_size >= 4_KB) {
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return GetInteger(m_physical_address) & (4_KB - 1);
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} else {
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return 0;
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}
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}
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};
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}
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