pmm.h File Reference

#include <boot/boot_info.h>
#include <sys/proc.h>

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Data Structures
struct	page_t
	Page metadata structure. More...
struct	page_stack_t
	Stored in free pages to form a stack of free pages. More...

Macros
#define	FREE_PAGE_MAX   (PAGE_SIZE / sizeof(pfn_t) - 1)
	Maximum number of free pages that can be stored in a free page.

Functions
void	pmm_init (void)
	Read the boot info memory map and initialize the PMM.
pfn_t	pmm_alloc (void)
	Allocate a single page of physical memory.
uint64_t	pmm_alloc_pages (pfn_t *pfns, size_t count)
	Allocate multiple pages of physical memory.
pfn_t	pmm_alloc_bitmap (size_t count, pfn_t maxPfn, pfn_t alignPfn)
	Allocate a contiguous region of physical memory using the bitmap.
void	pmm_free (pfn_t pfn)
	Free a single page of physical memory.
void	pmm_free_pages (pfn_t *pfns, size_t count)
	Free multiple pages of physical memory.
void	pmm_free_region (pfn_t pfn, size_t count)
	Free a contiguous region of physical memory.
uint64_t	pmm_ref_inc (pfn_t pfn, size_t count)
	Increment the reference count of a physical region.
static void	pmm_ref_dec (pfn_t pfn, size_t count)
	Decrement the reference count of a physical region.
size_t	pmm_total_pages (void)
	Get the total number of physical pages.
size_t	pmm_avail_pages (void)
	Get the number of available physical pages.
size_t	pmm_used_pages (void)
	Get the number of used physical pages.