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Diffstat (limited to 'sys/powerpc/include/bat.h')
| -rw-r--r-- | sys/powerpc/include/bat.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/sys/powerpc/include/bat.h b/sys/powerpc/include/bat.h new file mode 100644 index 0000000..a76b383 --- /dev/null +++ b/sys/powerpc/include/bat.h @@ -0,0 +1,172 @@ +/*- + * Copyright (c) 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (C) 1995, 1996 Wolfgang Solfrank. + * Copyright (C) 1995, 1996 TooLs GmbH. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by TooLs GmbH. + * 4. The name of TooLs GmbH may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $NetBSD: bat.h,v 1.2 1999/12/18 01:36:06 thorpej Exp $ + * $FreeBSD$ + */ + +#ifndef _MACHINE_BAT_H_ +#define _MACHINE_BAT_H_ + +struct bat { + u_int32_t batu; + u_int32_t batl; +}; + +/* Lower BAT bits (all but PowerPC 601): */ +#define BAT_PBS 0xfffe0000 /* physical block start */ +#define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */ +#define BAT_I 0x00000020 /* cache inhibit */ +#define BAT_M 0x00000010 /* memory coherency enable */ +#define BAT_G 0x00000008 /* guarded region */ + +#define BAT_PP_NONE 0x00000000 /* no access permission */ +#define BAT_PP_RO_S 0x00000001 /* read-only (soft) */ +#define BAT_PP_RW 0x00000002 /* read/write */ +#define BAT_PP_RO 0x00000003 /* read-only */ + +/* Upper BAT bits (all but PowerPC 601): */ +#define BAT_EBS 0xfffe0000 /* effective block start */ +#define BAT_BL 0x00001ffc /* block length */ +#define BAT_Vs 0x00000002 /* valid in supervisor mode */ +#define BAT_Vu 0x00000001 /* valid in user mode */ + +#define BAT_V (BAT_Vs|BAT_Vu) + +/* Block Length encoding (all but PowerPC 601): */ +#define BAT_BL_128K 0x00000000 +#define BAT_BL_256K 0x00000004 +#define BAT_BL_512K 0x0000000c +#define BAT_BL_1M 0x0000001c +#define BAT_BL_2M 0x0000003c +#define BAT_BL_4M 0x0000007c +#define BAT_BL_8M 0x000000fc +#define BAT_BL_16M 0x000001fc +#define BAT_BL_32M 0x000003fc +#define BAT_BL_64M 0x000007fc +#define BAT_BL_128M 0x00000ffc +#define BAT_BL_256M 0x00001ffc + +#define BATU(va, len, v) \ + (((va) & BAT_EBS) | ((len) & BAT_BL) | ((v) & BAT_V)) + +#define BATL(pa, wimg, pp) \ + (((pa) & BAT_PBS) | (wimg) | (pp)) + + +/* Lower BAT bits (PowerPC 601): */ +#define BAT601_PBN 0xfffe0000 /* physical block number */ +#define BAT601_V 0x00000040 /* valid */ +#define BAT601_BSM 0x0000003f /* block size mask */ + +/* Upper BAT bits (PowerPC 601): */ +#define BAT601_BLPI 0xfffe0000 /* block logical page index */ +#define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */ +#define BAT601_I 0x00000020 /* cache inhibit */ +#define BAT601_M 0x00000010 /* memory coherency enable */ +#define BAT601_Ks 0x00000008 /* key-supervisor */ +#define BAT601_Ku 0x00000004 /* key-user */ + +/* + * Permission bits on the PowerPC 601 are modified by the appropriate + * Key bit: + * + * Key PP Access + * 0 NONE read/write + * 0 RO_S read/write + * 0 RW read/write + * 0 RO read-only + * + * 1 NONE none + * 1 RO_S read-only + * 1 RW read/write + * 1 RO read-only + */ +#define BAT601_PP_NONE 0x00000000 /* no access permission */ +#define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */ +#define BAT601_PP_RW 0x00000002 /* read/write */ +#define BAT601_PP_RO 0x00000003 /* read-only */ + +/* Block Size Mask encoding (PowerPC 601): */ +#define BAT601_BSM_128K 0x00000000 +#define BAT601_BSM_256K 0x00000001 +#define BAT601_BSM_512K 0x00000003 +#define BAT601_BSM_1M 0x00000007 +#define BAT601_BSM_2M 0x0000000f +#define BAT601_BSM_4M 0x0000001f +#define BAT601_BSM_8M 0x0000003f + +#define BATU601(va, wim, key, pp) \ + (((va) & BAT601_BLPI) | (wim) | (key) | (pp)) + +#define BATL601(pa, size, v) \ + (((pa) & BAT601_PBN) | (v) | (size)) + +#ifdef _KERNEL +extern struct bat battable[16]; +#endif + +#endif /* _MACHINE_BAT_H_ */ |
