Annotation of sys/arch/sh/include/pmap.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pmap.h,v 1.2 2007/03/05 21:48:21 miod Exp $ */
2: /* $NetBSD: pmap.h,v 1.28 2006/04/10 23:12:11 uwe Exp $ */
3:
4: /*-
5: * Copyright (c) 2002 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by UCHIYAMA Yasushi.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: /*
41: * OpenBSD/sh pmap:
42: * pmap.pm_ptp[512] ... 512 slot of page table page
43: * page table page contains 1024 PTEs. (PAGE_SIZE / sizeof(pt_entry_t))
44: * | PTP 11bit | PTOFSET 10bit | PGOFSET 12bit |
45: */
46:
47: #ifndef _SH_PMAP_H_
48: #define _SH_PMAP_H_
49: #include <sys/queue.h>
50: #include <sh/pte.h>
51:
52: #define PMAP_STEAL_MEMORY
53: #define PMAP_GROWKERNEL
54:
55: #define __PMAP_PTP_N 512 /* # of page table page maps 2GB. */
56: typedef struct pmap {
57: pt_entry_t **pm_ptp;
58: int pm_asid;
59: int pm_refcnt;
60: struct pmap_statistics pm_stats; /* pmap statistics */
61: } *pmap_t;
62: extern struct pmap __pmap_kernel;
63:
64: void pmap_bootstrap(void);
65: void pmap_proc_iflush(struct proc *, vaddr_t, size_t);
66: #define pmap_unuse_final(p) do { /* nothing */ } while (0)
67: #define pmap_kernel() (&__pmap_kernel)
68: #define pmap_deactivate(pmap) do { /* nothing */ } while (0)
69: #define pmap_update(pmap) do { /* nothing */ } while (0)
70: #define pmap_copy(dp,sp,d,l,s) do { /* nothing */ } while (0)
71: #define pmap_collect(pmap) do { /* nothing */ } while (0)
72: #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
73: #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
74: #define pmap_phys_address(frame) ((paddr_t)(ptoa(frame)))
75:
76: /* ARGSUSED */
77: static __inline void
78: pmap_remove_all(struct pmap *pmap)
79: {
80: /* Nothing. */
81: }
82:
83: /*
84: * pmap_prefer() helps to avoid virtual cache aliases on SH4 CPUs
85: * which have the virtually-indexed cache.
86: */
87: #ifdef SH4
88: #define PMAP_PREFER(pa, va) pmap_prefer((pa), (va))
89: void pmap_prefer(vaddr_t, vaddr_t *);
90: #endif /* SH4 */
91:
92: #define __HAVE_PMAP_DIRECT
93: #define pmap_map_direct(pg) SH3_PHYS_TO_P1SEG(VM_PAGE_TO_PHYS(pg))
94: #define pmap_unmap_direct(va) PHYS_TO_VM_PAGE(SH3_P1SEG_TO_PHYS((va)))
95:
96: /* MD pmap utils. */
97: pt_entry_t *__pmap_pte_lookup(pmap_t, vaddr_t);
98: pt_entry_t *__pmap_kpte_lookup(vaddr_t);
99: boolean_t __pmap_pte_load(pmap_t, vaddr_t, int);
100: #endif /* !_SH_PMAP_H_ */
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