| 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); |
| 51,10 → 53,21 |
|---|
| * @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) |
| 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; |
| } |