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 * 3. 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
36 #ifndef _MACHINE_PMAP_H_
37 #define _MACHINE_PMAP_H_
39 #include <machine/pte.h>
43 #include <sys/queue.h>
44 #include <sys/_cpuset.h>
45 #include <sys/_lock.h>
46 #include <sys/_mutex.h>
48 #include <vm/_vm_radix.h>
52 #define vtophys(va) pmap_kextract((vm_offset_t)(va))
56 #define pmap_page_get_memattr(m) ((m)->md.pv_memattr)
57 #define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0)
58 void pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma);
65 TAILQ_HEAD(,pv_entry) pv_list;
67 vm_memattr_t pv_memattr;
71 * This structure is used to hold a virtual<->physical address
72 * association and is used mostly by bootstrap code
75 SLIST_ENTRY(pv_addr) pv_list;
82 struct pmap_statistics pm_stats; /* pmap statictics */
84 u_long pm_satp; /* value for SATP register */
85 cpuset_t pm_active; /* active on cpus */
86 TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */
87 LIST_ENTRY(pmap) pm_list; /* List of all pmaps */
88 struct vm_radix pm_root;
91 typedef struct pv_entry {
92 vm_offset_t pv_va; /* virtual address for mapping */
93 TAILQ_ENTRY(pv_entry) pv_next;
97 * pv_entries are allocated in chunks per-process. This avoids the
98 * need to track per-pmap assignments.
103 struct pmap * pc_pmap;
104 TAILQ_ENTRY(pv_chunk) pc_list;
105 uint64_t pc_map[_NPCM]; /* bitmap; 1 = free */
106 TAILQ_ENTRY(pv_chunk) pc_lru;
107 struct pv_entry pc_pventry[_NPCPV];
110 typedef struct pmap *pmap_t;
113 extern struct pmap kernel_pmap_store;
114 #define kernel_pmap (&kernel_pmap_store)
115 #define pmap_kernel() kernel_pmap
117 #define PMAP_ASSERT_LOCKED(pmap) \
118 mtx_assert(&(pmap)->pm_mtx, MA_OWNED)
119 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx)
120 #define PMAP_LOCK_ASSERT(pmap, type) \
121 mtx_assert(&(pmap)->pm_mtx, (type))
122 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
123 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \
124 NULL, MTX_DEF | MTX_DUPOK)
125 #define PMAP_OWNED(pmap) mtx_owned(&(pmap)->pm_mtx)
126 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx)
127 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx)
128 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)
130 #define PHYS_AVAIL_SIZE 10
131 extern vm_paddr_t phys_avail[];
132 extern vm_paddr_t dump_avail[];
133 extern vm_offset_t virtual_avail;
134 extern vm_offset_t virtual_end;
137 * Macros to test if a mapping is mappable with an L1 Section mapping
138 * or an L2 Large Page mapping.
140 #define L1_MAPPABLE_P(va, pa, size) \
141 ((((va) | (pa)) & L1_OFFSET) == 0 && (size) >= L1_SIZE)
145 void pmap_activate_boot(pmap_t);
146 void pmap_activate_sw(struct thread *);
147 void pmap_bootstrap(vm_offset_t, vm_paddr_t, vm_size_t);
148 void pmap_kenter_device(vm_offset_t, vm_size_t, vm_paddr_t);
149 vm_paddr_t pmap_kextract(vm_offset_t va);
150 void pmap_kremove(vm_offset_t);
151 void pmap_kremove_device(vm_offset_t, vm_size_t);
152 bool pmap_page_is_mapped(vm_page_t m);
153 bool pmap_ps_enabled(pmap_t);
155 void *pmap_mapdev(vm_offset_t, vm_size_t);
156 void *pmap_mapbios(vm_paddr_t, vm_size_t);
157 void pmap_unmapdev(vm_offset_t, vm_size_t);
158 void pmap_unmapbios(vm_offset_t, vm_size_t);
160 boolean_t pmap_map_io_transient(vm_page_t *, vm_offset_t *, int, boolean_t);
161 void pmap_unmap_io_transient(vm_page_t *, vm_offset_t *, int, boolean_t);
163 bool pmap_get_tables(pmap_t, vm_offset_t, pd_entry_t **, pd_entry_t **,
166 int pmap_fault_fixup(pmap_t, vm_offset_t, vm_prot_t);
169 pmap_vmspace_copy(pmap_t dst_pmap __unused, pmap_t src_pmap __unused)
179 #endif /* !_MACHINE_PMAP_H_ */