90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
/* $NetBSD: psl.h,v 1.4 1995/11/23 02:36:33 cgd Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#ifndef __ALPHA_PSL_H__
|
|
#define __ALPHA_PSL_H__
|
|
|
|
/*
|
|
* Processor Status register definitions.
|
|
*/
|
|
#define PSL_U 0x08 /* PS<3> == 1 -> User mode */
|
|
#define PSL_IPL 0x07 /* PS<2:0> -> Interrupt mask */
|
|
|
|
/*
|
|
* The interrupt priority levels.
|
|
* Other IPL's are configured in software, and are listed below.
|
|
*/
|
|
#define PSL_IPL_0 0 /* all interrupts enabled */
|
|
#define PSL_IPL_SOFT 1 /* block software interrupts */
|
|
#define PSL_IPL_IO 4 /* block I/O device interrupts */
|
|
#define PSL_IPL_CLOCK 5 /* block clock interrupts */
|
|
#define PSL_IPL_HIGH 6 /* block everything except mchecks */
|
|
|
|
/*
|
|
* Miscellaneous PSL definitions
|
|
*/
|
|
#define PSL_MBZ (0xfffffffffffffff0) /* Must be always zero */
|
|
#define PSL_USERSET (PSL_U) /* Must be set for user-mode */
|
|
#define PSL_USERCLR (PSL_MBZ|PSL_IPL) /* Must be clr for user-mode */
|
|
#define USERMODE(ps) ((ps & PSL_U) != 0) /* Is it user-mode? */
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* Translation buffer invalidation macro definitions.
|
|
*/
|
|
#define TBI_A -2 /* Flush all TB entries */
|
|
#define TBI_AP -1 /* Flush all per-process TB entries */
|
|
#define TBI_SI 1 /* Invalidate ITB entry for va */
|
|
#define TBI_SD 2 /* Invalidate DTB entry for va */
|
|
#define TBI_S 3 /* Invalidate all entries for va */
|
|
|
|
#define TBIA() pal_tbi(TBI_A, NULL)
|
|
#define TBIAP() pal_tbi(TBI_AP, NULL)
|
|
#define TBISI(va) pal_tbi(TBI_SI, va)
|
|
#define TBISD(va) pal_tbi(TBI_SD, va)
|
|
#define TBIS(va) pal_tbi(TBI_S, va)
|
|
|
|
/*
|
|
* Cache invalidation/flush routines.
|
|
*/
|
|
|
|
/* Flush all write buffers */
|
|
static __inline int wbflush() { __asm __volatile("mb"); } /* XXX? wmb */
|
|
|
|
#define IMB() pal_imb() /* Sync instruction cache w/data */
|
|
|
|
void alpha_mb __P((void)); /* Flush all write buffers */
|
|
void pal_imb __P((void)); /* Sync instruction cache */
|
|
u_int64_t pal_swpipl __P((u_int64_t)); /* write new IPL, return old */
|
|
u_int64_t profile_swpipl __P((u_int64_t)); /* pal_swpipl w/o profiling */
|
|
void pal_tbi __P((u_int64_t, void *)); /* Invalidate TLB entries */
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !__ALPHA_PSL_H__ */
|