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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1989 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _sun4_param_h
#define _sun4_param_h
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file is intended to contain the basic
* specific details of a given architecture.
*/
/*
* Machine dependent constants for Sun4.
*/
/*
* Define the VAC symbol if we could run on a machine
* which has a Virtual Address Cache (e.g. SUN4_260)
*/
#if defined(SUN4_260) || defined(SUN4_470) || defined(SUN4_330)
#define VAC
#else
#undef VAC
#endif /* SUN4_260 || SUN4_470 || SUN4_330 */
/*
* Define the FPU symbol if we could run on a machine with an external
* FPU (i.e. not integrated with the normal machine state like the vax).
*/
#define FPU
/*
* Define the MMU_3LEVEL symbol if we could run on a machine with
* a three level mmu. We also assume these machines have region
* and user cache flush operations.
*/
#ifdef SUN4_470
#define MMU_3LEVEL
#else
#undef MMU_3LEVEL
#endif /* SUN4_470 */
/*
* Define IOC if we could run on machines that have an I/O cache.
*/
#ifdef SUN4_470
#define IOC
#else
#undef IOC
#endif /* SUN4_470 */
/*
* Define BCOPY_BUF if we could run on machines that have a bcopy buffer.
*/
#ifdef SUN4_470
#define BCOPY_BUF
#else
#undef BCOPY_BUF
#endif /* SUN4_470 */
/*
* Define VA_HOLE for machines that have a hole in the virtual address space.
*/
#if defined(SUN4_260) || defined(SUN4_110) || defined(SUN4_330)
#define VA_HOLE
#else
#undef VA_HOLE
#endif /* SUN4_260 || SUN4_110 || SUN4_330 */
/*
* MMU_PAGES* describes the physical page size used by the mapping hardware.
* PAGES* describes the logical page size used by the system.
*/
#define MMU_PAGESIZE 0x2000 /* 8192 bytes */
#define MMU_PAGESHIFT 13 /* log2(MMU_PAGESIZE) */
#define MMU_PAGEOFFSET (MMU_PAGESIZE-1)/* Mask of address bits in page */
#define MMU_PAGEMASK (~MMU_PAGEOFFSET)
#define PAGESIZE 0x2000 /* All of the above, for logical */
#define PAGESHIFT 13
#define PAGEOFFSET (PAGESIZE - 1)
#define PAGEMASK (~PAGEOFFSET)
/*
* DATA_ALIGN is used to define the alignment of the Unix data segment.
*/
#define DATA_ALIGN 0x2000
/*
* Some random macros for units conversion.
*/
/*
* MMU pages to bytes, and back (with and without rounding)
*/
#define mmu_ptob(x) ((x) << MMU_PAGESHIFT)
#define mmu_btop(x) (((unsigned)(x)) >> MMU_PAGESHIFT)
#define mmu_btopr(x) ((((unsigned)(x) + MMU_PAGEOFFSET) >> MMU_PAGESHIFT))
/*
* pages to bytes, and back (with and without rounding)
*/
#define ptob(x) ((x) << PAGESHIFT)
#define btop(x) (((unsigned)(x)) >> PAGESHIFT)
#define btopr(x) ((((unsigned)(x) + PAGEOFFSET) >> PAGESHIFT))
/*
* 2 versions of pages to disk blocks
*/
#define mmu_ptod(x) ((x) << (MMU_PAGESHIFT - DEV_BSHIFT))
#define ptod(x) ((x) << (PAGESHIFT - DEV_BSHIFT))
/*
* Delay units are in microseconds.
*/
#define DELAY(n) usec_delay(n)
#define CDELAY(c, n) \
{ \
register int N = n; \
while (--N > 0) { \
if (c) \
break; \
usec_delay(1); \
} \
}
#define UPAGES 2 /* pages of u-area, NOT including red zone */
#define KERNSTACK 0x3000 /* size of kernel stack in u-area */
/*
* KERNSIZE the amount of vitual address space the kernel
* uses in all contexts.
*/
#define KERNELSIZE (128*1024*1024)
/*
* KERNELBASE is the virtual address which
* the kernel text/data mapping starts in all contexts.
*/
#define KERNELBASE (0-KERNELSIZE)
/*
* SYSBASE is the virtual address which
* the kernel allocated memory mapping starts in all contexts.
*/
#define SYSBASE (0-(16*1024*1024))
/*
* Msgbuf size.
*/
#define MSG_BSIZE ((7 * 1024) - sizeof (struct msgbuf_hd))
/*
* XXX - Macros for compatibility
*/
/* Clicks (MMU PAGES) to disk blocks */
#define ctod(x) mmu_ptod(x)
/* Clicks (MMU PAGES) to bytes, and back (with rounding) */
#define ctob(x) mmu_ptob(x)
#define btoc(x) mmu_btopr(x)
/*
* XXX - Old names for some backwards compatibility
*/
#define NBPG MMU_PAGESIZE
#define PGOFSET MMU_PAGEOFFSET
#define PGSHIFT MMU_PAGESHIFT
#define CLSIZE 1
#define CLSIZELOG2 0
#define CLBYTES PAGESIZE
#define CLOFSET PAGEOFFSET
#define CLSHIFT PAGESHIFT
#define clrnd(i) (i)
#endif /* !_sun4_param_h */
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