Bananymous
7e907b70f6
On 32 bit target, we were storing 32 bit physical region sizes which would truncate regions > 4 GiB
37 lines
826 B
C++
37 lines
826 B
C++
#pragma once
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#include <kernel/Memory/Types.h>
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#include <stddef.h>
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namespace Kernel
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{
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class PhysicalRange
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{
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public:
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PhysicalRange(paddr_t, uint64_t);
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paddr_t reserve_page();
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void release_page(paddr_t);
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paddr_t reserve_contiguous_pages(size_t pages);
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void release_contiguous_pages(paddr_t paddr, size_t pages);
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paddr_t start() const { return m_paddr; }
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paddr_t end() const { return m_paddr + m_page_count * PAGE_SIZE; }
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bool contains(paddr_t addr) const { return start() <= addr && addr < end(); }
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size_t usable_memory() const { return m_page_count * PAGE_SIZE; }
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size_t used_pages() const { return m_page_count - m_free_pages; }
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size_t free_pages() const { return m_free_pages; }
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private:
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const paddr_t m_paddr { 0 };
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const size_t m_page_count { 0 };
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size_t m_free_pages { 0 };
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};
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}
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