29,6 → 29,7 |
#include <genarch/mm/page_pt.h> |
#include <mm/page.h> |
#include <mm/frame.h> |
#include <mm/as.h> |
#include <arch/mm/page.h> |
#include <arch/mm/as.h> |
#include <arch/types.h> |
36,8 → 37,8 |
#include <arch/asm.h> |
#include <memstr.h> |
|
static void pt_mapping_insert(as_t *as, __address page, __address frame, int flags, __address root); |
static pte_t *pt_mapping_find(as_t *as, __address page, __address root); |
static void pt_mapping_insert(as_t *as, __address page, __address frame, int flags); |
static pte_t *pt_mapping_find(as_t *as, __address page); |
|
page_operations_t page_pt_operations = { |
.mapping_insert = pt_mapping_insert, |
49,18 → 50,19 |
* Map virtual address 'page' to physical address 'frame' |
* using 'flags'. |
* |
* @param as Ignored. |
* The address space must be locked and interrupts must be disabled. |
* |
* @param as Address space to wich page belongs. |
* @param page Virtual address of the page to be mapped. |
* @param frame Physical address of memory frame to which the mapping is done. |
* @param flags Flags to be used for mapping. |
* @param root Explicit PTL0 address. |
*/ |
void pt_mapping_insert(as_t *as, __address page, __address frame, int flags, __address root) |
void pt_mapping_insert(as_t *as, __address page, __address frame, int flags) |
{ |
pte_t *ptl0, *ptl1, *ptl2, *ptl3; |
__address newpt; |
|
ptl0 = (pte_t *) PA2KA(root ? root : (__address) GET_PTL0_ADDRESS()); |
ptl0 = (pte_t *) PA2KA((__address) as->page_table); |
|
if (GET_PTL1_FLAGS(ptl0, PTL0_INDEX(page)) & PAGE_NOT_PRESENT) { |
newpt = frame_alloc(FRAME_KA, ONE_FRAME, NULL); |
97,17 → 99,18 |
* |
* Find mapping for virtual page. |
* |
* @param as Ignored. |
* The address space must be locked and interrupts must be disabled. |
* |
* @param as Address space to which page belongs. |
* @param page Virtual page. |
* @param root PTL0 address if non-zero. |
* |
* @return NULL if there is no such mapping; entry from PTL3 describing the mapping otherwise. |
*/ |
pte_t *pt_mapping_find(as_t *as, __address page, __address root) |
pte_t *pt_mapping_find(as_t *as, __address page) |
{ |
pte_t *ptl0, *ptl1, *ptl2, *ptl3; |
|
ptl0 = (pte_t *) PA2KA(root ? root : (__address) GET_PTL0_ADDRESS()); |
ptl0 = (pte_t *) PA2KA((__address) as->page_table); |
|
if (GET_PTL1_FLAGS(ptl0, PTL0_INDEX(page)) & PAGE_NOT_PRESENT) |
return NULL; |