ppc_bat.h Source File

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ppc_bat.h
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1 /* GXemul: $Id: ppc_bat.h,v 1.1 2005-11-17 21:26:07 debug Exp $ */
2 /* $NetBSD: bat.h,v 1.5 2003/03/14 06:21:19 matt Exp $ */
3 
4 #ifndef _POWERPC_OEA_BAT_H_
5 #define _POWERPC_OEA_BAT_H_
6 
7 /*-
8  * Copyright (c) 1999 The NetBSD Foundation, Inc.
9  * All rights reserved.
10  *
11  * This code is derived from software contributed to The NetBSD Foundation
12  * by Jason R. Thorpe.
13  *
14  * Redistribution and use in source and binary forms, with or without
15  * modification, are permitted provided that the following conditions
16  * are met:
17  * 1. Redistributions of source code must retain the above copyright
18  * notice, this list of conditions and the following disclaimer.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  * notice, this list of conditions and the following disclaimer in the
21  * documentation and/or other materials provided with the distribution.
22  * 3. All advertising materials mentioning features or use of this software
23  * must display the following acknowledgement:
24  * This product includes software developed by the NetBSD
25  * Foundation, Inc. and its contributors.
26  * 4. Neither the name of The NetBSD Foundation nor the names of its
27  * contributors may be used to endorse or promote products derived
28  * from this software without specific prior written permission.
29  *
30  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
31  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
32  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
33  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
34  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
37  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
38  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40  * POSSIBILITY OF SUCH DAMAGE.
41  */
42 
43 /*
44  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
45  * Copyright (C) 1995, 1996 TooLs GmbH.
46  * All rights reserved.
47  *
48  * Redistribution and use in source and binary forms, with or without
49  * modification, are permitted provided that the following conditions
50  * are met:
51  * 1. Redistributions of source code must retain the above copyright
52  * notice, this list of conditions and the following disclaimer.
53  * 2. Redistributions in binary form must reproduce the above copyright
54  * notice, this list of conditions and the following disclaimer in the
55  * documentation and/or other materials provided with the distribution.
56  * 3. All advertising materials mentioning features or use of this software
57  * must display the following acknowledgement:
58  * This product includes software developed by TooLs GmbH.
59  * 4. The name of TooLs GmbH may not be used to endorse or promote products
60  * derived from this software without specific prior written permission.
61  *
62  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
63  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
64  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
65  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
66  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
67  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
68  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
69  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
70  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
71  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
72  */
73 
74 #if 0
75 #ifndef _LOCORE
76 struct bat {
77  register_t batu;
78  register_t batl;
79 };
80 #endif
81 #endif
82 
83 /* Lower BAT bits (all but PowerPC 601): */
84 #define BAT_RPN (~0x1ffff) /* physical block start */
85 #define BAT_XPN 0x00000e00 /* eXtended physical page number (0-2) */
86 #define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */
87 #define BAT_I 0x00000020 /* cache inhibit */
88 #define BAT_M 0x00000010 /* memory coherency enable */
89 #define BAT_G 0x00000008 /* guarded region (not on 601) */
90 #define BAT_X 0x00000004 /* eXtended physical page number (3) */
91 
92 /*
93  * BAT_XPN and BAT_X are only used when HID0[XAEN] == 1 and are used
94  * to generate the 4 MSB of physical address
95  */
96 
97 #define BAT_PP 0x00000003 /* PP mask */
98 #define BAT_PP_NONE 0x00000000 /* no access permission */
99 #define BAT_PP_RO_S 0x00000001 /* read-only (soft) */
100 #define BAT_PP_RW 0x00000002 /* read/write */
101 #define BAT_PP_RO 0x00000003 /* read-only */
102 
103 /* Upper BAT bits (all but PowerPC 601): */
104 #define BAT_EPI (~0x1ffffL) /* effective block start */
105 #define BAT_BL 0x00001ffc /* block length */
106 #define BAT_Vs 0x00000002 /* valid in supervisor mode */
107 #define BAT_Vu 0x00000001 /* valid in user mode */
108 
109 #define BAT_XBL 0x0001e000 /* eXtended Block Length (*) */
110 #define BAT_XBL_512M 0x00002000 /* XBL for 512MB */
111 #define BAT_XBL_1G 0x00006000 /* XBL for 1GB */
112 #define BAT_XBL_2G 0x0000e000 /* XBL for 2GB */
113 #define BAT_XBL_4G 0x0001e000 /* XBL for 4GB */
114 
115 #define BAT_V (BAT_Vs|BAT_Vu)
116 
117 /* Block Length encoding (all but PowerPC 601): */
118 #define BAT_BL_128K 0x00000000
119 #define BAT_BL_256K 0x00000004
120 #define BAT_BL_512K 0x0000000c
121 #define BAT_BL_1M 0x0000001c
122 #define BAT_BL_2M 0x0000003c
123 #define BAT_BL_4M 0x0000007c
124 #define BAT_BL_8M 0x000000fc
125 #define BAT_BL_16M 0x000001fc
126 #define BAT_BL_32M 0x000003fc
127 #define BAT_BL_64M 0x000007fc
128 #define BAT_BL_128M 0x00000ffc
129 #define BAT_BL_256M 0x00001ffc
130 
131 #define BATU(va, len, v) \
132  (((va) & BAT_EPI) | ((len) & BAT_BL) | ((v) & BAT_V))
133 
134 #define BATL(pa, wimg, pp) \
135  (((pa) & BAT_RPN) | (wimg) | (pp))
136 
137 #define BAT_VA_MATCH_P(batu,va) \
138  (((~(((batu)&BAT_BL)<<15))&(va)&BAT_EPI)==((batu)&BAT_EPI))
139 
140 #define BAT_PA_MATCH_P(batu,batl,pa) \
141  (((~(((batu)&BAT_BL)<<15))&(pa)&BAT_RPN)==((batl)&BAT_RPN))
142 
143 #define BAT_VALID_P(batu, msr) \
144  (((msr)&PSL_PR)?(((batu)&BAT_Vu)==BAT_Vu):(((batu)&BAT_Vs)==BAT_Vs))
145 
146 /* Lower BAT bits (PowerPC 601): */
147 #define BAT601_PBN 0xfffe0000 /* physical block number */
148 #define BAT601_V 0x00000040 /* valid */
149 #define BAT601_BSM 0x0000003f /* block size mask */
150 
151 /* Upper BAT bits (PowerPC 601): */
152 #define BAT601_BLPI 0xfffe0000 /* block logical page index */
153 #define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */
154 #define BAT601_I 0x00000020 /* cache inhibit */
155 #define BAT601_M 0x00000010 /* memory coherency enable */
156 #define BAT601_Ks 0x00000008 /* key-supervisor */
157 #define BAT601_Ku 0x00000004 /* key-user */
158 
159 /*
160  * Permission bits on the PowerPC 601 are modified by the appropriate
161  * Key bit:
162  *
163  * Key PP Access
164  * 0 NONE read/write
165  * 0 RO_S read/write
166  * 0 RW read/write
167  * 0 RO read-only
168  *
169  * 1 NONE none
170  * 1 RO_S read-only
171  * 1 RW read/write
172  * 1 RO read-only
173  */
174 #define BAT601_PP 0x00000003
175 #define BAT601_PP_NONE 0x00000000 /* no access permission */
176 #define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */
177 #define BAT601_PP_RW 0x00000002 /* read/write */
178 #define BAT601_PP_RO 0x00000003 /* read-only */
179 
180 /* Block Size Mask encoding (PowerPC 601): */
181 #define BAT601_BSM_128K 0x00000000
182 #define BAT601_BSM_256K 0x00000001
183 #define BAT601_BSM_512K 0x00000003
184 #define BAT601_BSM_1M 0x00000007
185 #define BAT601_BSM_2M 0x0000000f
186 #define BAT601_BSM_4M 0x0000001f
187 #define BAT601_BSM_8M 0x0000003f
188 
189 #define BATU601(va, wim, key, pp) \
190  (((va) & BAT601_BLPI) | (wim) | (key) | (pp))
191 
192 #define BATL601(pa, size, v) \
193  (((pa) & BAT601_PBN) | (v) | (size))
194 
195 #define BAT601_VA_MATCH_P(batu, batl, va) \
196  (((~(((batl)&BAT601_BSM)<<17))&(va)&BAT601_BLPI)==((batu)&BAT601_BLPI))
197 
198 #define BAT601_VALID_P(batl) \
199  ((batl) & BAT601_V)
200 
201 #ifdef _KERNEL
202 #ifndef _LOCORE
203 void oea_batinit(paddr_t, ...);
204 void oea_iobat_add(paddr_t, register_t);
205 void oea_iobat_remove(paddr_t);
206 extern struct bat battable[];
207 #endif
208 #endif
209 
210 #endif /* _POWERPC_OEA_BAT_H_ */

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