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/*-
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
* Copyright (c) Peter Wemm <peter@netplex.com.au>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_PCPU_H_
#define _MACHINE_PCPU_H_
#ifdef _KERNEL
#include <machine/cpufunc.h>
struct pmap;
#define CPUSAVE_LEN 8
#define PCPU_MD_COMMON_FIELDS \
int pc_inside_intr; \
struct pmap *pc_curpmap; /* current pmap */ \
struct thread *pc_fputhread; /* current fpu user */ \
register_t pc_tempsave[CPUSAVE_LEN]; \
register_t pc_disisave[CPUSAVE_LEN]; \
register_t pc_dbsave[CPUSAVE_LEN];
#define PCPU_MD_AIM_FIELDS
#define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2)
#define BOOKE_TLB_MAXNEST 3
#define BOOKE_TLB_SAVELEN 16
#define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST)
#define PCPU_MD_BOOKE_FIELDS \
register_t pc_booke_critsave[BOOKE_CRITSAVE_LEN]; \
register_t pc_booke_mchksave[CPUSAVE_LEN]; \
register_t pc_booke_tlbsave[BOOKE_TLBSAVE_LEN]; \
register_t pc_booke_tlb_level;
/* Definitions for register offsets within the exception tmp save areas */
#define CPUSAVE_R28 0 /* where r28 gets saved */
#define CPUSAVE_R29 1 /* where r29 gets saved */
#define CPUSAVE_R30 2 /* where r30 gets saved */
#define CPUSAVE_R31 3 /* where r31 gets saved */
#define CPUSAVE_AIM_DAR 4 /* where SPR_DAR gets saved */
#define CPUSAVE_AIM_DSISR 5 /* where SPR_DSISR gets saved */
#define CPUSAVE_BOOKE_DEAR 4 /* where SPR_DEAR gets saved */
#define CPUSAVE_BOOKE_ESR 5 /* where SPR_ESR gets saved */
#define CPUSAVE_SRR0 6 /* where SRR0 gets saved */
#define CPUSAVE_SRR1 7 /* where SRR1 gets saved */
/* Book-E TLBSAVE is more elaborate */
#define TLBSAVE_BOOKE_LR 0
#define TLBSAVE_BOOKE_CR 1
#define TLBSAVE_BOOKE_SRR0 2
#define TLBSAVE_BOOKE_SRR1 3
#define TLBSAVE_BOOKE_R20 4
#define TLBSAVE_BOOKE_R21 5
#define TLBSAVE_BOOKE_R22 6
#define TLBSAVE_BOOKE_R23 7
#define TLBSAVE_BOOKE_R24 8
#define TLBSAVE_BOOKE_R25 9
#define TLBSAVE_BOOKE_R26 10
#define TLBSAVE_BOOKE_R27 11
#define TLBSAVE_BOOKE_R28 12
#define TLBSAVE_BOOKE_R29 13
#define TLBSAVE_BOOKE_R30 14
#define TLBSAVE_BOOKE_R31 15
#ifndef COMPILING_LINT
#ifdef AIM
#define PCPU_MD_FIELDS \
PCPU_MD_COMMON_FIELDS \
PCPU_MD_AIM_FIELDS
#endif
#ifdef E500
#define PCPU_MD_FIELDS \
PCPU_MD_COMMON_FIELDS \
PCPU_MD_BOOKE_FIELDS
#endif
#else
#define PCPU_MD_FIELDS \
PCPU_MD_COMMON_FIELDS \
PCPU_MD_AIM_FIELDS \
PCPU_MD_BOOKE_FIELDS
#endif
#define PCPUP ((struct pcpu *) powerpc_get_pcpup())
#define PCPU_GET(member) (PCPUP->pc_ ## member)
/*
* XXX The implementation of this operation should be made atomic
* with respect to preemption.
*/
#define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value))
#define PCPU_INC(member) PCPU_ADD(member, 1)
#define PCPU_PTR(member) (&PCPUP->pc_ ## member)
#define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value))
#endif /* _KERNEL */
#endif /* !_MACHINE_PCPU_H_ */
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