#include <kernel/mem/paging_types.h>
#include <kernel/mem/pmm.h>
#include <kernel/config.h>
#include <kernel/init/boot_info.h>
#include <kernel/log/log.h>
#include <kernel/log/panic.h>
#include <kernel/sync/lock.h>
#include <boot/boot_info.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/bitmap.h>
#include <errno.h>
#include <string.h>
#include <sys/math.h>
#include <sys/proc.h>

Include dependency graph for pmm.c:

Functions
	BITMAP_CREATE_ONE (bitmap, CONFIG_PMM_BITMAP_MAX_ADDR/PAGE_SIZE)

static bool	pmm_is_mem_avail (EFI_MEMORY_TYPE type)

static void	pmm_stack_push (pfn_t pfn)

static pfn_t	pmm_stack_pop (void)

static pfn_t	pmm_bitmap_set (size_t count, pfn_t maxPfn, pfn_t alignPfn)

static void	pmm_bitmap_clear (pfn_t pfn, size_t pageAmount)

static void	pmm_free_unlocked (pfn_t pfn)

static void	pmm_free_region_unlocked (pfn_t pfn, size_t count)

static void	pmm_detect_memory (const boot_memory_map_t *map)

static void	pmm_init_refs (const boot_memory_map_t *map)

static void	pmm_load_memory (const boot_memory_map_t *map)

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.

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.

Variables
static const char *	efiMemTypeToString []

static page_t *	pages = NULL

static page_stack_t *	stack = NULL

static size_t	location = FREE_PAGE_MAX

static pfn_t	highest = 0

static size_t	total = 0

static size_t	avail = 0

static lock_t	lock = LOCK_CREATE()

Function Documentation

◆ BITMAP_CREATE_ONE()

BITMAP_CREATE_ONE	(	bitmap	,
		CONFIG_PMM_BITMAP_MAX_ADDR/	PAGE_SIZE
	)

◆ pmm_is_mem_avail()

static bool pmm_is_mem_avail ( EFI_MEMORY_TYPE type )

static

Definition at line 51 of file pmm.c.

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