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7d38243dff
Added a new virtual address pool for contiguous virtual addresses for the pager. This will help in mapping multi-page user buffers and files.
33 lines
891 B
C
33 lines
891 B
C
/*
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* Physical page descriptor
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#ifndef __MEMORY_H__
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#define __MEMORY_H__
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#include <vm_area.h>
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#include <init.h>
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struct membank {
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unsigned long start;
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unsigned long end;
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unsigned long free;
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struct page *page_array;
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};
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extern struct membank membank[];
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void init_mm_descriptors(struct page_bitmap *page_map,
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struct bootdesc *bootdesc, struct membank *membank);
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void init_physmem(struct initdata *initdata, struct membank *membank);
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int pager_address_pool_init(void);
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void *pager_new_address(int npages);
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int pager_delete_address(void *virt_addr, int npages);
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void *pager_map_pages(struct vm_file *f, unsigned long page_offset, unsigned long npages);
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void pager_unmap_pages(void *addr, unsigned long npages);
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void *pager_map_page(struct vm_file *f, unsigned long page_offset);
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void pager_unmap_page(void *addr);
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#endif /* __MEMORY_H__ */
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