132 lines
4.8 KiB
C
132 lines
4.8 KiB
C
/*-
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* Copyright (c) 1991 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and William Jolitz of UUNET Technologies Inc.
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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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
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* from: @(#)pmap.h 7.4 (Berkeley) 5/12/91
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* from: FreeBSD: src/sys/i386/include/pmap.h,v 1.70 2000/11/30
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PMAP_H_
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#define _MACHINE_PMAP_H_
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/_lock.h>
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#include <sys/_mutex.h>
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#include <machine/cache.h>
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#include <machine/hypervisorvar.h>
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#define TSB_INIT_SHIFT 3
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#define PMAP_CONTEXT_MAX 8192
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/*
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* We don't want TSBs getting above 1MB - which is enough
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* for a working set of 512MB - revisit in the future
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*/
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#define TSB_MAX_RESIZE (20 - TSB_INIT_SHIFT - PAGE_SHIFT)
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typedef struct pmap *pmap_t;
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typedef uint32_t pmap_cpumask_t;
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struct pv_entry;
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struct tte_hash;
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struct md_page {
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int pv_list_count;
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TAILQ_HEAD(, pv_entry) pv_list;
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};
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struct pmap {
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uint64_t pm_context;
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uint64_t pm_hashscratch;
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uint64_t pm_tsbscratch;
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vm_paddr_t pm_tsb_ra;
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struct mtx pm_mtx;
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struct tte_hash *pm_hash;
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TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */
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struct hv_tsb_info pm_tsb;
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pmap_cpumask_t pm_active; /* mask of cpus currently using pmap */
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pmap_cpumask_t pm_tlbactive; /* mask of cpus that have used this pmap */
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struct pmap_statistics pm_stats;
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uint32_t pm_tsb_miss_count;
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uint32_t pm_tsb_cap_miss_count;
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vm_paddr_t pm_old_tsb_pa[TSB_MAX_RESIZE];
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};
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#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx)
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#define PMAP_LOCK_ASSERT(pmap, type) \
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mtx_assert(&(pmap)->pm_mtx, (type))
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#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
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#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \
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NULL, MTX_DEF | MTX_DUPOK)
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#define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx)
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#define PMAP_MTX(pmap) (&(pmap)->pm_mtx)
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#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx)
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#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)
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/*
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* For each vm_page_t, there is a list of all currently valid virtual
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* mappings of that page. An entry is a pv_entry_t, the list is pv_list.
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*/
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typedef struct pv_entry {
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pmap_t pv_pmap;
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vm_offset_t pv_va;
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TAILQ_ENTRY(pv_entry) pv_list;
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TAILQ_ENTRY(pv_entry) pv_plist;
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} *pv_entry_t;
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#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
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void pmap_bootstrap(vm_offset_t ekva);
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vm_paddr_t pmap_kextract(vm_offset_t va);
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void pmap_invalidate_page(pmap_t pmap, vm_offset_t va, int cleartsb);
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void pmap_invalidate_range(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, int cleartsb);
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void pmap_invalidate_all(pmap_t pmap);
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void pmap_scrub_pages(vm_paddr_t pa, int64_t size);
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void pmap_free_contig_pages(void *ptr, int npages);
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void *pmap_alloc_zeroed_contig_pages(int npages, uint64_t alignment);
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#define vtophys(va) pmap_kextract((vm_offset_t)(va))
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extern struct pmap kernel_pmap_store;
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#define kernel_pmap (&kernel_pmap_store)
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extern vm_paddr_t phys_avail[];
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extern vm_offset_t virtual_avail;
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extern vm_offset_t virtual_end;
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extern vm_paddr_t msgbuf_phys;
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#endif /* !_MACHINE_PMAP_H_ */
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