2 * Creation Date: <2002/01/13 13:53:14 samuel>
3 * Time-stamp: <2002/01/27 19:56:11 samuel>
9 * Most of these declarations originate from the Linux Kernel
11 * Copyright (C) 2002 Samuel Rydh (samuel@ibrium.se)
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation
22 /* Hardware Page Table Entry */
24 unsigned long v:1; /* Entry is valid */
25 unsigned long vsid:24; /* Virtual segment identifier */
26 unsigned long h:1; /* Hash algorithm indicator */
27 unsigned long api:6; /* Abbreviated page index */
29 unsigned long rpn:20; /* Real (physical) page number */
30 unsigned long :3; /* Unused */
31 unsigned long r:1; /* Referenced */
32 unsigned long c:1; /* Changed */
33 unsigned long w:1; /* Write-thru cache mode */
34 unsigned long i:1; /* Cache inhibited */
35 unsigned long m:1; /* Memory coherence */
36 unsigned long g:1; /* Guarded */
37 unsigned long :1; /* Unused */
38 unsigned long pp:2; /* Page protection */
41 typedef struct mPTE_64 {
42 uint32_t avpn_low; /* Abbreviated Virtual Page Number (unused) */
43 uint32_t avpn:25; /* Abbreviated Virtual Page Number */
44 uint32_t sw:4; /* Software Use */
45 uint32_t :1; /* Reserved */
46 uint32_t h:1; /* Hash algorithm indicator */
47 uint32_t v:1; /* Entry is valid */
49 uint32_t rpn_low; /* Real (physical) page number (unused) */
50 uint32_t rpn:20; /* Real (physical) page number */
51 uint32_t :2; /* Reserved */
52 uint32_t ac:1; /* Address Compare*/
53 uint32_t r:1; /* Referenced */
54 uint32_t c:1; /* Changed */
55 uint32_t w:1; /* Write-thru cache mode */
56 uint32_t i:1; /* Cache inhibited */
57 uint32_t m:1; /* Memory coherence */
58 uint32_t g:1; /* Guarded */
59 uint32_t n:1; /* No-Execute */
60 uint32_t pp:2; /* Page protection */
63 typedef struct _mBATU { /* Upper part of BAT (all except 601) */
64 unsigned long bepi:15; /* Effective page index (virtual address) */
65 unsigned long :4; /* Unused */
66 unsigned long bl:11; /* Block size mask */
67 unsigned long vs:1; /* Supervisor valid */
68 unsigned long vp:1; /* User valid */
71 typedef struct _mBATL { /* Lower part of BAT (all except 601) */
72 unsigned long brpn:15; /* Real page index (physical address) */
73 unsigned long :10; /* Unused */
74 unsigned long w:1; /* Write-thru cache */
75 unsigned long i:1; /* Cache inhibit */
76 unsigned long m:1; /* Memory coherence */
77 unsigned long g:1; /* Guarded (MBZ in IBAT) */
78 unsigned long :1; /* Unused */
79 unsigned long pp:2; /* Page access protections */
82 typedef struct _mBAT {
83 mBATU batu; /* Upper register */
84 mBATL batl; /* Lower register */
87 typedef struct _mSEGREG {
88 unsigned long t:1; /* Normal or I/O type */
89 unsigned long ks:1; /* Supervisor 'key' (normally 0) */
90 unsigned long kp:1; /* User 'key' (normally 1) */
91 unsigned long n:1; /* No-execute */
92 unsigned long :4; /* Unused */
93 unsigned long vsid:24; /* Virtual Segment Identifier */
97 #endif /* _H_MMUTYPES */