mm.c File Reference

(29312b1 fbconsole, panic: render panic after framebuffer was given to userspace - without clearing screen contents)

#include "arch.h"
#include "mm.h"
#include "vm.h"
#include "log.h"
#include "panic.h"

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Data Structures
struct	mm_page_list_entry_t

Macros
#define	PRESENT_BIT   1

Functions
void	mm_del_page_list_entry (mm_page_list_entry_t *entry)
void *	mm_alloc_pages (uint64_t count)
mm_page_list_entry_t *	mm_get_page_list_entry (mm_page_list_entry_t *start)
void	mm_bootstrap (ptr_t usable_page)
void	mm_mark_physical_pages (ptr_t start, uint64_t count, mm_page_status_t status)
void	mm_print_physical_free_regions (void)
ptr_t	mm_highest_address (void)

Variables
mm_page_list_entry_t *	mm_physical_page_list = 0

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Data Structure Documentation

mm_page_list_entry_t

struct mm_page_list_entry_t

Definition at line 9 of file mm.c.

Collaboration diagram for mm_page_list_entry_t:

Data Fields
uint64_t	count
void *	next
ptr_t	start
mm_page_status_t	status

Macro Definition Documentation

PRESENT_BIT

#define PRESENT_BIT   1

Definition at line 7 of file mm.c.

Function Documentation

mm_alloc_pages()

void * mm_alloc_pages

(

uint64_t

count

)

Definition at line 24 of file mm.c.

References mm_page_list_entry_t::count, mm_del_page_list_entry(), MM_FREE, mm_physical_page_list, mm_page_list_entry_t::next, panic_message(), mm_page_list_entry_t::start, and mm_page_list_entry_t::status.

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mm_bootstrap()

void mm_bootstrap

(

ptr_t

usable_page

)

Definition at line 76 of file mm.c.

References mm_page_list_entry_t::count, mm_physical_page_list, MM_UNKNOWN, mm_page_list_entry_t::next, mm_page_list_entry_t::start, and mm_page_list_entry_t::status.

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mm_del_page_list_entry()

void mm_del_page_list_entry

(

mm_page_list_entry_t *

entry

)

Definition at line 18 of file mm.c.

References entry, MM_UNKNOWN, and mm_page_list_entry_t::start.

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mm_get_page_list_entry()

mm_page_list_entry_t * mm_get_page_list_entry

(

mm_page_list_entry_t *

start

)

Definition at line 48 of file mm.c.

References ALLOCATOR_REGION_KERNEL_HEAP, mm_page_list_entry_t::count, MM_UNKNOWN, mm_page_list_entry_t::next, mm_page_list_entry_t::start, mm_page_list_entry_t::status, vm_context_alloc_pages(), and VM_KERNEL_CONTEXT.

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mm_highest_address()

ptr_t mm_highest_address

(

void

)

Definition at line 166 of file mm.c.

References mm_page_list_entry_t::count, mm_physical_page_list, mm_page_list_entry_t::next, and mm_page_list_entry_t::start.

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mm_mark_physical_pages()

void mm_mark_physical_pages	(	ptr_t	start,
		uint64_t	count,
		mm_page_status_t	status
	)

Mark physical pages with information from loader memory map

Parameters

start	Start of the physical memory region to mark
count	Number of pages
status	Page status of the given memory region

Definition at line 93 of file mm.c.

References mm_page_list_entry_t::count, entry, mm_bootstrap(), mm_del_page_list_entry(), MM_FREE, mm_get_page_list_entry(), mm_physical_page_list, mm_page_list_entry_t::next, panic_message(), mm_page_list_entry_t::start, and mm_page_list_entry_t::status.

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mm_print_physical_free_regions()

void mm_print_physical_free_regions

(

void

)

Definition at line 154 of file mm.c.

References mm_page_list_entry_t::count, logd, MM_FREE, mm_physical_page_list, mm_page_list_entry_t::next, mm_page_list_entry_t::start, and mm_page_list_entry_t::status.

Variable Documentation

mm_physical_page_list

mm_page_list_entry_t* mm_physical_page_list = 0

Definition at line 16 of file mm.c.