29,10 → 29,12 |
#include <genarch/mm/page_ht.h> |
#include <mm/page.h> |
#include <mm/frame.h> |
#include <mm/heap.h> |
#include <arch/mm/asid.h> |
#include <arch/types.h> |
#include <typedefs.h> |
#include <arch/asm.h> |
#include <debug.h> |
|
static void ht_mapping_insert(__address page, asid_t asid, __address frame, int flags, __address root); |
static pte_t *ht_mapping_find(__address page, asid_t asid, __address root); |
51,11 → 53,22 |
* @param asid Address space to which page belongs. |
* @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. |
* @param root Ignored. |
*/ |
void ht_mapping_insert(__address page, asid_t asid, __address frame, int flags, __address root) |
{ |
pte_t *t, *u = NULL; |
|
t = HT_HASH(page, asid); |
if (!HT_SLOT_EMPTY(t)) { |
u = (pte_t *) malloc(sizeof(pte_t)); /* FIXME: use slab allocator for this */ |
if (!u) |
panic("could not allocate memory for hash table\n"); |
*u = *t; |
} |
HT_SET_NEXT(t, u); |
HT_SET_RECORD(t, page, asid, frame, flags); |
} |
|
/** Find mapping for virtual page in page hash table. |
* |
63,11 → 76,17 |
* |
* @param page Virtual page. |
* @param asid Address space to wich page belongs. |
* @param root PTL0 address if non-zero. |
* @param root Ignored. |
* |
* @return NULL if there is no such mapping; entry from PTL3 describing the mapping otherwise. |
* @return NULL if there is no such mapping; requested mapping otherwise. |
*/ |
pte_t *ht_mapping_find(__address page, asid_t asid, __address root) |
{ |
return NULL; |
pte_t *t; |
|
t = HT_HASH(page, asid); |
while (!HT_COMPARE(page, asid, t) && HT_GET_NEXT(t)) |
t = HT_GET_NEXT(t); |
|
return HT_COMPARE(page, asid, t) ? t : NULL; |
} |