paging.c File Reference

#include "paging.h"
#include "autoconf.h"
#include "init/init.h"
#include <libk/serial.h>
#include <memory/memory_utils.h>
#include <memory/phys_base_allocator.h>
#include <memory/phys_window.h>
#include <memory/vm_manager.h>
#include <spinlock.h>
#include <str.h>
#include <type.h>

Go to the source code of this file.

Data Structures
struct	paging_page

Macros
#define	EXPORT_SYMBOL(sym)

Typedefs
typedef struct paging_page	paging_page

Functions
void	paging_physwindow_mmap (page_t page_dir, uint64_t virt, uint64_t phys, uint64_t flags)
struct paging_page	__attribute__ ((aligned(32)))
page_t	paging_create_page_directory ()
static void	initialize_physical_paging_window (page_t page)
	INIT (paging)
void	paging_debug (page_t pml4_phys, uint64_t virt)
void	paging_setup (page_t p)
void	vxMmap (page_t page_dir, uint64_t virt, uint64_t phys, uint64_t flags)
void	vxMultipleMmap (page_t page_dir, uint64_t virt, uint64_t phys, uint64_t size, uint64_t flags)
void	paging_unmap_page (page_t page_dir, uint64_t virt)
void	paging_unmap_fill (page_t page_dir, uint64_t virt, size_t size)
void	paging_reload (page_t p)
page_t	paging_get_highest_page_map (void)
uint64_t	vaddr_to_paddr (page_t p, uint64_t vaddr)

Variables
static uintptr_t	PHYS_BASE_METADATA_ADDR = 0xffffffe000000000
volatile boolean_t	paging_has_been_set = 0
uint8_t *	bitmap_base_
uint8_t *	dma_bitmap_base_
uint64_t	metadata_size
size_t	dma_bitmap_size
uintptr_t	page
paging_page *	next
static spinlock_t	paging_lock = {0}
static page_t	kernel_pml4
static page_t	physwindow_pt = 0

Macro Definition Documentation

EXPORT_SYMBOL

#define EXPORT_SYMBOL

(

sym

)

Value:

    __attribute__((used, visibility("default"))) void* __export_##sym = &sym

Definition at line 15 of file paging.c.

Typedef Documentation

paging_page

typedef struct paging_page paging_page

Definition at line 28 of file paging.c.

Function Documentation

__attribute__()

struct paging_page __attribute__

(

(aligned(32))

)

Definition at line 1 of file framebuffer.h.

INIT()

INIT

(

paging

)

Definition at line 93 of file paging.c.

References bitmap_base_, initialize_physical_paging_window(), kernel_pml4, LOG_INFO, metadata_size, PAGE_PRESENT, PAGE_SIZE, PAGE_WRITABLE, paging_has_been_set, paging_reload(), PHYS_BASE_METADATA_ADDR, VMM_PAGE, vxMmap(), and vxMultipleMmap().

initialize_physical_paging_window()

static void initialize_physical_paging_window ( page_t page )

static

Definition at line 78 of file paging.c.

References LOG_INFO, mem_vma_phys_window_pt, mem_vma_phys_window_start, page, PAGE_PRESENT, PAGE_WRITABLE, paging_physwindow_mmap(), physwindow_pt, and vxMultipleMmap().

Referenced by INIT().

paging_create_page_directory()

page_t paging_create_page_directory

(

)

Definition at line 36 of file paging.c.

References mem_create_physwindow(), memset(), page, PAGE_SIZE, paging_has_been_set, paging_lock, phys_base_alloc(), spin_acquire(), and spin_release().

Referenced by execve().

paging_debug()

void paging_debug	(	page_t	pml4_phys,
		uint64_t	virt )

Definition at line 117 of file paging.c.

References mem_create_physwindow(), mem_release_physwindow(), PAGE_PHYS_MASK, PHYS_WINDOW_FLAG_LOCK, PHYS_WINDOW_FLAG_READ, and serial_trace.

paging_get_highest_page_map()

page_t paging_get_highest_page_map

(

void

)

Definition at line 463 of file paging.c.

References kernel_pml4.

Referenced by __attribute__(), acpi_map_phys_page(), acpi_phys_page_unmap(), alloc_page_locked(), elf_load(), execve(), INIT(), INIT(), INIT(), INIT(), INIT(), mcfg_parse(), mem_create_physwindow(), proccess_elf(), slab_cache_destroy(), vxCreateSlabCache(), vxPCIGatheringBusInfo(), and vxSlabAlloc().

paging_physwindow_mmap()

void paging_physwindow_mmap	(	page_t	page_dir,
		uint64_t	virt,
		uint64_t	phys,
		uint64_t	flags )

Definition at line 54 of file paging.c.

References flags, PAGE_PHYS_MASK, physwindow_pt, and VMM_PAGE.

Referenced by initialize_physical_paging_window().

paging_reload()

void paging_reload

(

page_t

p

)

Definition at line 457 of file paging.c.

Referenced by acpi_map_phys_page(), acpi_phys_page_unmap(), INIT(), INIT(), INIT(), INIT(), mcfg_parse(), sch_restore_to_next_thread(), vxPCIGatheringBusInfo(), and vxSchedulerTick().

paging_setup()

void paging_setup

(

page_t

p

)

Definition at line 197 of file paging.c.

References dst, kernel_pml4, mem_create_physwindow(), mem_release_physwindow(), paging_has_been_set, PHYS_WINDOW_FLAG_LOCK, PHYS_WINDOW_FLAG_READ, PHYS_WINDOW_FLAG_WRITE, and serial2_printf().

Referenced by execve().

paging_unmap_fill()

void paging_unmap_fill	(	page_t	page_dir,
		uint64_t	virt,
		size_t	size )

Definition at line 451 of file paging.c.

References paging_unmap_page(), and size.

Referenced by acpi_phys_page_unmap().

paging_unmap_page()

void paging_unmap_page	(	page_t	page_dir,
		uint64_t	virt )

Definition at line 360 of file paging.c.

References mem_create_physwindow(), mem_release_physwindow(), PAGE_PHYS_MASK, paging_has_been_set, paging_lock, PHYS_WINDOW_FLAG_LOCK, PHYS_WINDOW_FLAG_READ, PHYS_WINDOW_FLAG_WRITE, spin_acquire(), and spin_release().

Referenced by execve(), paging_unmap_fill(), and slab_cache_destroy().

vaddr_to_paddr()

uint64_t vaddr_to_paddr	(	page_t	p,
		uint64_t	vaddr )

Definition at line 465 of file paging.c.

References PAGE_PHYS_MASK, and PHYS2VIRT.

vxMmap()

void vxMmap	(	page_t	page_dir,
		uint64_t	virt,
		uint64_t	phys,
		uint64_t	flags )

Definition at line 223 of file paging.c.

References flags, mem_create_physwindow(), mem_release_physwindow(), memset(), PAGE_INTER_STRIP, PAGE_PHYS_MASK, PAGE_PRESENT, PAGE_SIZE, PAGE_USER, PAGE_WRITABLE, paging_has_been_set, paging_lock, phys_base_alloc(), PHYS_WINDOW_FLAG_LOCK, PHYS_WINDOW_FLAG_READ, PHYS_WINDOW_FLAG_WRITE, spin_acquire(), and spin_release().

Referenced by alloc_page_locked(), INIT(), syscall_brk(), vxCreateSlabCache(), vxMultipleMmap(), and vxSlabAlloc().

vxMultipleMmap()

void vxMultipleMmap	(	page_t	page_dir,
		uint64_t	virt,
		uint64_t	phys,
		uint64_t	size,
		uint64_t	flags )

Definition at line 340 of file paging.c.

References flags, size, and vxMmap().

Referenced by __attribute__(), acpi_map_phys_page(), elf_load(), elf_mmap_got(), execve(), INIT(), INIT(), INIT(), INIT(), INIT(), initialize_physical_paging_window(), mcfg_parse(), mmap_handle_anonymous(), syscall_mprotect(), and vxPCIGatheringBusInfo().

Variable Documentation

bitmap_base_

uint8_t* bitmap_base_

extern

Definition at line 18 of file phys_base_allocator.c.

Referenced by INIT(), INIT(), phys_base_alloc(), pys_base_get_free_block_count(), and vxPhysBaseFree().

dma_bitmap_base_

uint8_t* dma_bitmap_base_

extern

Definition at line 19 of file phys_base_allocator.c.

dma_bitmap_size

size_t dma_bitmap_size

extern

Definition at line 20 of file phys_base_allocator.c.

kernel_pml4

page_t kernel_pml4

static

Definition at line 51 of file paging.c.

Referenced by INIT(), paging_get_highest_page_map(), and paging_setup().

metadata_size

uint64_t metadata_size

extern

Definition at line 22 of file phys_base_allocator.c.

Referenced by INIT(), and INIT().

next

paging_page* next

Definition at line 1 of file paging.c.

page

uintptr_t page

Definition at line 0 of file paging.c.

Referenced by create_thread(), elf_load(), elf_mmap_got(), execve(), initialize_physical_paging_window(), paging_create_page_directory(), phys_base_alloc_aligned(), vma_find(), vma_lookup_free_vaddr(), vma_register(), vma_tree_add_locked(), and vma_unregister().

paging_has_been_set

volatile boolean_t paging_has_been_set = 0

Definition at line 18 of file paging.c.

Referenced by INIT(), paging_create_page_directory(), paging_setup(), paging_unmap_page(), and vxMmap().

paging_lock

spinlock_t paging_lock = {0}

static

Definition at line 34 of file paging.c.

Referenced by paging_create_page_directory(), paging_unmap_page(), and vxMmap().

PHYS_BASE_METADATA_ADDR

uintptr_t PHYS_BASE_METADATA_ADDR = 0xffffffe000000000

static

Definition at line 13 of file paging.c.

Referenced by INIT().

physwindow_pt

page_t physwindow_pt = 0

static

Definition at line 52 of file paging.c.

Referenced by initialize_physical_paging_window(), and paging_physwindow_mmap().