| 28,8 → 28,6 |
|---|
| |
| /* |
| * This is the generic page hash table interface. |
| * Architectures that use single page hash table for |
| * storing page translations must implement it. |
| */ |
| |
| #ifndef __PAGE_HT_H__ |
| 37,75 → 35,32 |
|---|
| |
| #include <mm/page.h> |
| #include <typedefs.h> |
| #include <arch/types.h> |
| #include <adt/list.h> |
| #include <adt/hash_table.h> |
| |
| /** Page hash table size. */ |
| #define HT_WIDTH HT_WIDTH_ARCH |
| #define HT_SIZE (1<<HT_WIDTH) |
| #define HT_ENTRIES (HT_SIZE/sizeof(pte_t)) |
| #define PAGE_HT_KEYS 2 |
| #define KEY_AS 0 |
| #define KEY_PAGE 1 |
| |
| /** Hash function. |
| * |
| * @param page Virtual address. Only vpn bits will be used. |
| * @param asid Address space identifier. |
| * |
| * @return Pointer to hash table typed pte_t *. |
| */ |
| #define HT_HASH(page, asid) HT_HASH_ARCH(page, asid) |
| #define PAGE_HT_ENTRIES_BITS 13 |
| #define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS) |
| |
| /** Compare PTE with page and asid. |
| * |
| * @param page Virtual address. Only vpn bits will be used. |
| * @param asid Address space identifier. |
| * @param t PTE. |
| * |
| * @return 1 on match, 0 otherwise. |
| */ |
| #define HT_COMPARE(page, asid, t) HT_COMPARE_ARCH(page, asid, t) |
| struct pte { |
| link_t link; /**< Page hash table link. */ |
| as_t *as; /**< Address space. */ |
| __address page; /**< Virtual memory page. */ |
| __address frame; /**< Physical memory frame. */ |
| int flags; |
| unsigned a : 1; /**< Accessed. */ |
| unsigned d : 1; /**< Dirty. */ |
| unsigned p : 1; /**< Present. */ |
| }; |
| |
| /** Identify empty page hash table slots. |
| * |
| * @param t Pointer ro hash table typed pte_t *. |
| * |
| * @return 1 if the slot is empty, 0 otherwise. |
| */ |
| #define HT_SLOT_EMPTY(t) HT_SLOT_EMPTY_ARCH(t) |
| |
| /** Invalidate/empty page hash table slot. |
| * |
| * @param t Address of the slot to be invalidated. |
| */ |
| #define HT_INVALIDATE_SLOT(t) HT_INVALIDATE_SLOT_ARCH(t) |
| |
| /** Return next record in collision chain. |
| * |
| * @param t PTE. |
| * |
| * @return Successor of PTE or NULL. |
| */ |
| #define HT_GET_NEXT(t) HT_GET_NEXT_ARCH(t) |
| |
| /** Set successor in collision chain. |
| * |
| * @param t PTE. |
| * @param s Successor or NULL. |
| */ |
| #define HT_SET_NEXT(t, s) HT_SET_NEXT_ARCH(t, s) |
| |
| /** Set page hash table record. |
| * |
| * @param t PTE. |
| * @param page Virtual address. Only vpn bits will be used. |
| * @param asid Address space identifier. |
| * @param frame Physical address. Only pfn bits will be used. |
| * @param flags Flags. See mm/page.h. |
| */ |
| #define HT_SET_RECORD(t, page, asid, frame, flags) HT_SET_RECORD_ARCH(t, page, asid, frame, flags) |
| |
| extern page_operations_t page_ht_operations; |
| extern spinlock_t page_ht_lock; |
| |
| extern pte_t *page_ht; |
| extern hash_table_t page_ht; |
| extern hash_table_operations_t ht_operations; |
| |
| extern void ht_invalidate_all(void); |
| |
| #endif |