76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
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/*-
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* Copyright (c) 2006 Kip Macy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_TTE_HASH_H_
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#define _MACHINE_TTE_HASH_H_
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#define HASH_ENTRY_SHIFT 2
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#define HASH_ENTRIES ((1 << HASH_ENTRY_SHIFT) - 1)
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#define THE_SHIFT (TTE_SHIFT + HASH_ENTRY_SHIFT) /* size of TSB entry * #entries */
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#define TH_COLLISION_SHIFT 47 /* bit 47 will never be set for a valid tag */
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#define TH_COLLISION (1UL << TH_COLLISION_SHIFT)
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#define TH_INVALID_SHIFT 46 /* bit 47 will never be set for a valid tag */
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#define TH_INVALID (1UL << TH_INVALID_SHIFT)
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struct tte_hash;
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typedef struct tte_hash *tte_hash_t;
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void tte_hash_init(void);
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void tte_hash_clear(tte_hash_t hash);
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tte_t tte_hash_clear_bits(tte_hash_t hash, vm_offset_t va, uint64_t flags);
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tte_hash_t tte_hash_kernel_create(vm_offset_t, uint64_t, vm_paddr_t);
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tte_hash_t tte_hash_create(uint64_t context, uint64_t *scratchval);
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void tte_hash_destroy(tte_hash_t th);
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tte_t tte_hash_delete(tte_hash_t hash, vm_offset_t va);
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void tte_hash_delete_all(tte_hash_t hash);
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void tte_hash_insert(tte_hash_t hash, vm_offset_t va, tte_t data);
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tte_t tte_hash_lookup(tte_hash_t hash, vm_offset_t va);
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tte_t tte_hash_lookup_nolock(tte_hash_t hash, vm_offset_t va);
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void tte_hash_reset(tte_hash_t hash);
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uint64_t tte_hash_set_scratchpad_kernel(tte_hash_t th);
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uint64_t tte_hash_set_scratchpad_user(tte_hash_t th, uint64_t context);
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tte_t tte_hash_update(tte_hash_t hash, vm_offset_t va, tte_t tte_data);
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#endif /* _MACHINE_TTE_HASH_H_ */
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