#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/mem/pmm_bitmap.h>
#include <kernel/mem/pmm_stack.h>
#include <kernel/sync/lock.h>
#include <boot/boot_info.h>
#include <errno.h>
#include <string.h>
#include <sys/math.h>
#include <sys/proc.h>

Include dependency graph for pmm.c:

Macros
#define	PMM_BITMAP_SIZE (CONFIG_PMM_BITMAP_MAX_ADDR / PAGE_SIZE)

Functions
static bool	pmm_is_efi_mem_available (EFI_MEMORY_TYPE type)

static void	pmm_free_unlocked (void *address)

static void	pmm_free_pages_unlocked (void *address, uint64_t count)

static void	pmm_detect_memory (const boot_memory_map_t *map)

static void	pmm_load_memory (const boot_memory_map_t *map)

void	pmm_init (void)
	Initializes the Physical Memory Manager.

void *	pmm_alloc (void)
	Allocates a single physical page.

uint64_t	pmm_alloc_pages (void **addresses, uint64_t count)
	Allocates multiple physical pages.

void *	pmm_alloc_bitmap (uint64_t count, uintptr_t maxAddr, uint64_t alignment)
	Allocates a contiguous region of physical pages managed by the bitmap.

void	pmm_free (void *address)
	Frees a single physical page.

void	pmm_free_pages (void **addresses, uint64_t count)
	Frees multiple physical pages.

void	pmm_free_region (void *address, uint64_t count)
	Frees a contiguous region of physical pages.

uint64_t	pmm_total_amount (void)
	Retrieves the total amount of physical memory managed by the PMM.

uint64_t	pmm_free_amount (void)
	Retrieves the amount of free physical memory.

uint64_t	pmm_used_amount (void)
	Retrieves the amount of reserved physical memory.

Variables
static const char *	efiMemTypeToString []

static pmm_stack_t	stack

static pmm_bitmap_t	bitmap

static uint64_t	bitmapBuffer [BITMAP_BITS_TO_QWORDS(PMM_BITMAP_SIZE)]

static uint64_t	pageAmount = 0

static lock_t	lock = LOCK_CREATE()

Macro Definition Documentation

◆ PMM_BITMAP_SIZE

#define PMM_BITMAP_SIZE (CONFIG_PMM_BITMAP_MAX_ADDR / PAGE_SIZE)

Definition at line 36 of file pmm.c.

Function Documentation