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cpu.h revision 1.10.2.3 
      1 /*	$NetBSD: cpu.h,v 1.10.2.3 2001/03/27 15:31:09 bouyer Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995-1997 Wolfgang Solfrank.
      5  * Copyright (C) 1995-1997 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 #ifndef	_MACHINE_CPU_H_
     34 #define	_MACHINE_CPU_H_
     35 
     36 #if defined(_KERNEL) && !defined(_LKM)
     37 #include "opt_lockdebug.h"
     38 #include "opt_multiprocessor.h"
     39 #endif
     40 
     41 #include <machine/frame.h>
     42 #include <machine/psl.h>
     43 #include <machine/intr.h>
     44 
     45 #ifdef _KERNEL
     46 #include <sys/sched.h>
     47 struct cpu_info {
     48 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     49 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
     50 	u_long ci_spin_locks;		/* # of spin locks held */
     51 	u_long ci_simple_locks;		/* # of simple locks held */
     52 #endif
     53 	struct proc *ci_curproc;	/* current owner of the processor */
     54 
     55 	struct pcb *ci_curpcb;
     56 	struct pmap *ci_curpm;
     57 	struct proc *ci_fpuproc;
     58 	struct pcb *ci_idle_pcb;	/* PA of our idle pcb */
     59 	int ci_cpuid;
     60 
     61 	int ci_astpending;
     62 	int ci_want_resched;
     63 	u_long ci_lasttb;
     64 	int ci_tickspending;
     65 	int ci_cpl;
     66 	int ci_ipending;
     67 	int ci_intrdepth;
     68 	char *ci_intstk;
     69 	char *ci_spillstk;
     70 	int ci_tempsave[8];
     71 	int ci_ddbsave[8];
     72 	int ci_ipkdbsave[8];
     73 	int ci_disisave[4];
     74 };
     75 
     76 #ifdef MULTIPROCESSOR
     77 static __inline int
     78 cpu_number()
     79 {
     80 	int pir;
     81 
     82 	asm ("mfspr %0,1023" : "=r"(pir));
     83 	return pir;
     84 }
     85 
     86 static __inline struct cpu_info *
     87 curcpu()
     88 {
     89 	struct cpu_info *ci;
     90 
     91 	asm volatile ("mfsprg %0,0" : "=r"(ci));
     92 	return ci;
     93 }
     94 
     95 extern struct cpu_info cpu_info[];
     96 
     97 #define CPU_IS_PRIMARY(ci)	((ci)->ci_cpuid == 0)
     98 #define curproc			curcpu()->ci_curproc
     99 #define fpuproc			curcpu()->ci_fpuproc
    100 #define curpcb			curcpu()->ci_curpcb
    101 #define curpm			curcpu()->ci_curpm
    102 #define want_resched		curcpu()->ci_want_resched
    103 #define astpending		curcpu()->ci_astpending
    104 
    105 #else
    106 extern struct cpu_info cpu_info_store;
    107 extern volatile int want_resched;
    108 extern volatile int astpending;
    109 
    110 #define curcpu()		(&cpu_info_store)
    111 #define cpu_number()		0
    112 
    113 #endif /* MULTIPROCESSOR */
    114 
    115 #define	CLKF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
    116 #define	CLKF_BASEPRI(frame)	((frame)->pri == 0)
    117 #define	CLKF_PC(frame)		((frame)->srr0)
    118 #define	CLKF_INTR(frame)	((frame)->depth > 0)
    119 
    120 #define	PROC_PC(p)		(trapframe(p)->srr0)
    121 
    122 #define	cpu_swapout(p)
    123 #define cpu_wait(p)
    124 
    125 extern void delay __P((unsigned));
    126 #define	DELAY(n)		delay(n)
    127 
    128 #define	need_resched(ci)	(want_resched = 1, astpending = 1)
    129 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, astpending = 1)
    130 #define	signotify(p)		(astpending = 1)
    131 
    132 extern char bootpath[];
    133 
    134 #endif /* _KERNEL */
    135 
    136 #if defined(_KERNEL) || defined(_STANDALONE)
    137 #define	CACHELINESIZE	32
    138 #endif
    139 
    140 #include <powerpc/cpu.h>
    141 
    142 #endif	/* _MACHINE_CPU_H_ */
    143