37 lines
883 B
C
37 lines
883 B
C
#pragma once
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#include <common/cdef.h>
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#include <arch/mlayout.h>
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#include <mm/phys.h>
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#define ARCH_PMAP_MAX_PHYS_SEGS (64)
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// on x86-64 we always keep full direct mapping in the kernel
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// maps normal memory (cacheable)
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void *
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arch_pmap_map(mm_paddr paddr, usize size);
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mm_paddr
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arch_paddr_to_mm_page(mm_paddr paddr);
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// maps device memory (uncacheable)
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void *
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arch_pmap_mapdev(mm_paddr paddr, usize size);
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#define ARCH_VADDR_ATTR_PRESENT (0x1u)
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#define ARCH_VADDR_ATTR_UNCACHED (0x2u)
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#define ARCH_VADDR_ATTR_READONLY (0x4u)
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#define ARCH_VADDR_ATTR_NX (0x8u)
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int
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arch_map_vaddr(void * base, mm_paddr paddr, uintptr vaddr, usize sz, uint attr);
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// module-private functions
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#define ARCH_PMAP_TO_PHYS(pmaddr) ((pmaddr) - ARCH_ML_PMAP_START)
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#define ARCH_PHYS_TO_PMAP(paddr) (ARCH_ML_PMAP_START + (paddr))
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void
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archp_mem_init();
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void
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archp_mem_addseg(uintptr start, usize len);
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