47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
#pragma once
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#include <stdint.h>
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#include <ztypes.h>
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namespace mmth {
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/*
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* Memory Region class that unmaps its memory and releases its
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* capability when it goes out of scope.
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*/
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class OwnedMemoryRegion {
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public:
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OwnedMemoryRegion() = default;
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OwnedMemoryRegion(const OwnedMemoryRegion&) = delete;
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OwnedMemoryRegion& operator=(const OwnedMemoryRegion&) = delete;
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OwnedMemoryRegion(OwnedMemoryRegion&&);
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OwnedMemoryRegion& operator=(OwnedMemoryRegion&&);
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~OwnedMemoryRegion();
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static OwnedMemoryRegion FromCapability(z_cap_t vmmo_cap);
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// TODO: Consider making this its own class.
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static OwnedMemoryRegion ContiguousPhysical(uint64_t size, uint64_t* paddr);
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static OwnedMemoryRegion DirectPhysical(uint64_t paddr, uint64_t size);
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uint64_t vaddr() { return vaddr_; }
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uint64_t size() { return size_; }
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z_cap_t cap() { return vmmo_cap_; }
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z_cap_t DuplicateCap();
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bool empty() { return vmmo_cap_ != 0; }
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explicit operator bool() { return vmmo_cap_ != 0; }
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private:
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OwnedMemoryRegion(uint64_t vmmo_cap, uint64_t vaddr, uint64_t size)
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: vmmo_cap_(vmmo_cap), vaddr_(vaddr), size_(size) {}
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uint64_t vmmo_cap_ = 0;
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uint64_t vaddr_ = 0;
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// TODO: We may want to differentiate between VMMO size and mapped size?
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uint64_t size_ = 0;
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};
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} // namespace mmth
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