freebsd-dev/sys/mips/include/pcpu.h
Neel Natu 1d4fd9f5a8 SMP support for the mips port.
The platform that supports SMP currently is a SWARM with a dual-core Sibyte
processor. The kernel config file to use is SWARM_SMP.

Reviewed by: imp, rrs
2010-02-09 06:24:43 +00:00

68 lines
2.5 KiB
C

/*-
* 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.
*
* from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb
* $FreeBSD$
*/
#ifndef _MACHINE_PCPU_H_
#define _MACHINE_PCPU_H_
#include <machine/pte.h>
#define PCPU_MD_FIELDS \
pd_entry_t *pc_segbase; /* curthread segbase */ \
struct pmap *pc_curpmap; /* pmap of curthread */ \
u_int32_t pc_next_asid; /* next ASID to alloc */ \
u_int32_t pc_asid_generation; /* current ASID generation */ \
u_int pc_pending_ipis; /* IPIs pending to this CPU */
#ifdef _KERNEL
extern char pcpu_space[MAXCPU][PAGE_SIZE * 2];
#define PCPU_ADDR(cpu) (struct pcpu *)(pcpu_space[(cpu)])
extern struct pcpu *pcpup;
#define PCPUP pcpup
#define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value))
#define PCPU_GET(member) (PCPUP->pc_ ## member)
#define PCPU_INC(member) PCPU_ADD(member, 1)
#define PCPU_PTR(member) (&PCPUP->pc_ ## member)
#define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value))
#define PCPU_LAZY_INC(member) (++PCPUP->pc_ ## member)
#ifdef SMP
/*
* Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'.
*/
void mips_pcpu_tlb_init(struct pcpu *pcpu);
#endif
#endif /* _KERNEL */
#endif /* !_MACHINE_PCPU_H_ */