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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright (c) 1990 The University of Utah and
27: * the Center for Software Science at the University of Utah (CSS).
28: * All rights reserved.
29: *
30: * Permission to use, copy, modify and distribute this software is hereby
31: * granted provided that (1) source code retains these copyright, permission,
32: * and disclaimer notices, and (2) redistributions including binaries
33: * reproduce the notices in supporting documentation, and (3) all advertising
34: * materials mentioning features or use of this software display the following
35: * acknowledgement: ``This product includes software developed by the Center
36: * for Software Science at the University of Utah.''
37: *
38: * THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
39: * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF
40: * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
41: *
42: * CSS requests users of this software to return to [email protected] any
43: * improvements that they make and grant CSS redistribution rights.
44: *
45: * Utah $Hdr: pmap.h 1.13 91/09/25$
46: * Author: Mike Hibler, Bob Wheeler, University of Utah CSS, 9/90
47: */
48:
49: /*
50: * Pmap header for ppc
51: */
52:
53: #ifndef _PPC_PMAP_H_
54: #define _PPC_PMAP_H_
55:
56: /*#include <mach/vm_types.h>*/
57: #include <mach/machine/vm_types.h>
58: #include <mach/vm_prot.h>
59: #include <mach/vm_statistics.h>
60: #include <mach/machine/kern_return.h>
61: #include <kern/lock.h>
62: /*#include <kern/queue.h>*/
63:
64: /* The size of the hash table and mapping entries and the size
65: * of the VM needed by the linux server is proportional
66: * to the amount of physical memory. The hash table and mapping
67: * entries must be allocated in contiguous physical memory.
68: * Currently, the limits are set up so that 128M is the ceiling
69: */
70:
71: #define MAX_SUPPORTED_PHYSICAL_MEMORY (128*1024*1024)
72:
73: struct pmap {
74: decl_simple_lock_data(, lock) /* Lock on map */
75: int ref_count; /* reference count */
76: space_t space; /* space for this pmap */
77: struct pmap *next; /* linked list of free pmaps */
78: struct pmap_statistics stats; /* statistics */
79: };
80:
81: typedef struct pmap *pmap_t;
82:
83: #define PMAP_NULL ((pmap_t) 0)
84:
85: extern pmap_t kernel_pmap; /* The kernel's map */
86:
87: #define PMAP_SWITCH_USER(th, map, my_cpu) th->map = map;
88:
89: #define PMAP_ACTIVATE(pmap, th, cpu)
90: #define PMAP_DEACTIVATE(pmap, th, cpu)
91: #define PMAP_CONTEXT(pmap,th)
92:
93: #define pmap_kernel_va(VA) \
94: (((VA) >= VM_MIN_KERNEL_ADDRESS) && ((VA) <= VM_MAX_KERNEL_ADDRESS))
95:
96: #define PPC_SID_KERNEL 0 /* Must change KERNEL_SEG_REG0_VALUE if !0 */
97: #define SID_MAX ((1<<20) - 1) /* Space ID=20 bits, segment_id=SID + 4 bits */
98: #define PPC_SID_PRIME 356299 /* generate non-repetative "different" sids */
99: #define PPC_SID_MASK 0xfffff /* within a 20-bit field */
100:
101: #define pmap_kernel() (kernel_pmap)
102: #define pmap_resident_count(pmap) ((pmap)->stats.resident_count)
103: #define pmap_remove_attributes(pmap,start,end)
104: #define pmap_copy(dpmap,spmap,da,len,sa)
105:
106: #define pmap_phys_address(x) ((x) << PPC_PGSHIFT)
107: #define pmap_phys_to_frame(x) ((x) >> PPC_PGSHIFT)
108:
109: #define PMAP_PTOB(x) ((x) << PPC_PGSHIFT)
110:
111: /*
112: * prototypes.
113: */
114: extern void ppc_protection_init(void);
115: extern vm_offset_t kvtophys(vm_offset_t addr);
116: extern vm_offset_t phystokv(vm_offset_t addr);
117: extern vm_offset_t pmap_map(vm_offset_t va,
118: vm_offset_t spa,
119: vm_offset_t epa,
120: vm_prot_t prot);
121: extern kern_return_t pmap_add_physical_memory(vm_offset_t spa,
122: vm_offset_t epa,
123: boolean_t available,
124: unsigned int attr);
125: extern vm_offset_t pmap_map_bd(vm_offset_t va,
126: vm_offset_t spa,
127: vm_offset_t epa,
128: vm_prot_t prot);
129: extern void pmap_bootstrap(unsigned int mem_size,
130: vm_offset_t *first_avail);
131: extern void pmap_block_map(vm_offset_t pa,
132: vm_size_t size,
133: vm_prot_t prot,
134: int entry,
135: int dtlb);
136: extern void pmap_switch(pmap_t);
137:
138: extern vm_offset_t pmap_extract(pmap_t pmap,
139: vm_offset_t va);
140:
141: extern void pmap_remove_all(vm_offset_t pa);
142:
143: extern boolean_t pmap_verify_free(vm_offset_t pa);
144:
145: extern void flush_cache(vm_offset_t pa, unsigned length);
146: extern void flush_cache_v(vm_offset_t pa, unsigned length);
147: extern void invalidate_cache_v(vm_offset_t pa, unsigned length);
148: typedef enum {
149: cache_default,
150: cache_writethrough,
151: cache_disable
152: } cache_spec_t;
153:
154: void pmap_enter_cache_spec(
155: pmap_t pmap,
156: vm_offset_t va,
157: vm_offset_t pa,
158: vm_prot_t prot,
159: boolean_t wired,
160: cache_spec_t caching);
161:
162: #endif /* _PPC_PMAP_H_ */
163:
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