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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/*
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/*
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 * This is the generic page hash table interface.
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 * This is the generic page hash table interface.
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 * Architectures that use single page hash table for
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 * storing page translations must implement it.
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 */
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 */
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#ifndef __PAGE_HT_H__
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#ifndef __PAGE_HT_H__
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#define __PAGE_HT_H__
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#define __PAGE_HT_H__
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#include <mm/page.h>
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#include <mm/page.h>
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/** Hash function.
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 *
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 * @param page Virtual address. Only vpn bits will be used.
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 * @param asid Address space identifier.
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 *
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 * @return Pointer to hash table typed pte_t *.
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 */
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#define HT_HASH(page, asid)     HT_HASH_ARCH(page, asid)
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/** Compare PTE with page and asid.
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 *
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 * @param page Virtual address. Only vpn bits will be used.
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 * @param asid Address space identifier.
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 * @param t PTE.
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 *
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 * @return 1 on match, 0 otherwise.
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 */
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#define HT_COMPARE(page, asid, t)   HT_COMPARE_ARCH(page, asid, t)
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/** Identify empty hash table slots.
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 *
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 * @param t Pointer ro hash table typed pte_t *.
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 *
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 * @return 1 if the slot is empty, 0 otherwise.
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 */
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#define HT_SLOT_EMPTY(t)        HT_SLOT_EMPTY_ARCH(t)
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/** Return next record in collision chain.
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 *
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 * @param t PTE.
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 *
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 * @return Successor of PTE or NULL.
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 */
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#define HT_GET_NEXT(t)          HT_GET_NEXT_ARCH(t)
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/** Set successor in collision chain.
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 *
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 * @param t PTE.
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 * @param s Successor or NULL.
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 */
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#define HT_SET_NEXT(t, s)       HT_SET_NEXT_ARCH(t, s)
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/** Set page hash table record.
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 *
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 * @param t PTE.
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 * @param page Virtual address. Only vpn bits will be used.
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 * @param asid Address space identifier.
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 * @param frame Physical address. Only pfn bits will be used.
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 * @param flags Flags. See mm/page.h.
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 */
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#define HT_SET_RECORD(t, page, asid, frame, flags)  HT_SET_RECORD_ARCH(t, page, asid, frame, flags)
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extern page_operations_t page_ht_operations;
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extern page_operations_t page_ht_operations;
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#endif
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#endif