2 * Copyright (c) 1991 Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
6 * the Systems Programming Group of the University of Utah Computer
7 * Science Department and William Jolitz of UUNET Technologies Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
34 * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91
35 * from: FreeBSD: src/sys/i386/include/pmap.h,v 1.70 2000/11/30
39 #ifndef _MACHINE_PMAP_H_
40 #define _MACHINE_PMAP_H_
42 #include <sys/types.h>
43 #include <sys/queue.h>
44 #include <sys/_lock.h>
45 #include <sys/_mutex.h>
46 #include <machine/hv_api.h>
48 #define TSB_INIT_SHIFT 3
49 #define PMAP_CONTEXT_MAX 8192
51 * We don't want TSBs getting above 1MB - which is enough
52 * for a working set of 512MB - revisit in the future
54 #define TSB_MAX_RESIZE (20 - TSB_INIT_SHIFT - PAGE_SHIFT)
56 typedef struct pmap *pmap_t;
57 typedef uint32_t pmap_cpumask_t;
64 TAILQ_HEAD(, pv_entry) pv_list;
70 uint64_t pm_hashscratch;
71 uint64_t pm_tsbscratch;
75 struct tte_hash *pm_hash;
76 TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */
77 struct hv_tsb_info pm_tsb;
78 pmap_cpumask_t pm_active; /* mask of cpus currently using pmap */
79 pmap_cpumask_t pm_tlbactive; /* mask of cpus that have used this pmap */
80 struct pmap_statistics pm_stats;
81 uint32_t pm_tsb_miss_count;
82 uint32_t pm_tsb_cap_miss_count;
83 vm_paddr_t pm_old_tsb_ra[TSB_MAX_RESIZE];
86 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx)
87 #define PMAP_LOCK_ASSERT(pmap, type) \
88 mtx_assert(&(pmap)->pm_mtx, (type))
89 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
90 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \
91 NULL, MTX_DEF | MTX_DUPOK)
92 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx)
93 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx)
94 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx)
95 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)
98 * For each vm_page_t, there is a list of all currently valid virtual
99 * mappings of that page. An entry is a pv_entry_t, the list is pv_list.
102 typedef struct pv_entry {
105 TAILQ_ENTRY(pv_entry) pv_list;
106 TAILQ_ENTRY(pv_entry) pv_plist;
109 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT
110 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
111 #define pmap_page_set_memattr(m, ma) (void)0
113 void pmap_bootstrap(vm_offset_t ekva);
114 vm_paddr_t pmap_kextract(vm_offset_t va);
116 void pmap_invalidate_page(pmap_t pmap, vm_offset_t va, int cleartsb);
117 void pmap_invalidate_range(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, int cleartsb);
118 void pmap_invalidate_all(pmap_t pmap);
119 void pmap_scrub_pages(vm_paddr_t pa, int64_t size);
120 void pmap_free_contig_pages(void *ptr, int npages);
121 void *pmap_alloc_zeroed_contig_pages(int npages, uint64_t alignment);
123 #define vtophys(va) pmap_kextract((vm_offset_t)(va))
125 extern struct pmap kernel_pmap_store;
126 #define kernel_pmap (&kernel_pmap_store)
127 extern vm_paddr_t phys_avail[];
128 extern vm_offset_t virtual_avail;
129 extern vm_offset_t virtual_end;
130 extern vm_paddr_t msgbuf_phys;
132 #endif /* !_MACHINE_PMAP_H_ */