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/*-
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
* 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: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
* $FreeBSD$
*/
#ifndef _MACHINE_PCPU_H_
#define _MACHINE_PCPU_H_
#ifdef _KERNEL
#include <sys/_lock.h>
#include <sys/_mutex.h>
#define ALT_STACK_SIZE 128
struct vmspace;
#endif /* _KERNEL */
#if __ARM_ARCH >= 6
#define PCPU_MD_FIELDS \
unsigned int pc_vfpsid; \
unsigned int pc_vfpmvfr0; \
unsigned int pc_vfpmvfr1; \
struct pmap *pc_curpmap; \
struct mtx pc_cmap_lock; \
void *pc_cmap1_pte2p; \
void *pc_cmap2_pte2p; \
caddr_t pc_cmap1_addr; \
caddr_t pc_cmap2_addr; \
vm_offset_t pc_qmap_addr; \
void *pc_qmap_pte2p; \
unsigned int pc_dbreg[32]; \
int pc_dbreg_cmd; \
char __pad[27]
#else
#define PCPU_MD_FIELDS \
char __pad[157]
#endif
#ifdef _KERNEL
#define PC_DBREG_CMD_NONE 0
#define PC_DBREG_CMD_LOAD 1
struct pcb;
struct pcpu;
extern struct pcpu *pcpup;
#if __ARM_ARCH >= 6
#define CPU_MASK (0xf)
#ifndef SMP
#define get_pcpu() (pcpup)
#else
#define get_pcpu() __extension__ ({ \
int id; \
__asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \
(pcpup + (id & CPU_MASK)); \
})
#endif
static inline struct thread *
get_curthread(void)
{
void *ret;
__asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret));
return (ret);
}
static inline void
set_curthread(struct thread *td)
{
__asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td));
}
static inline void *
get_tls(void)
{
void *tls;
/* TPIDRURW contains the authoritative value. */
__asm __volatile("mrc p15, 0, %0, c13, c0, 2" : "=r" (tls));
return (tls);
}
static inline void
set_tls(void *tls)
{
/*
* Update both TPIDRURW and TPIDRURO. TPIDRURW needs to be written
* first to ensure that a context switch between the two writes will
* still give the desired result of updating both.
*/
__asm __volatile(
"mcr p15, 0, %0, c13, c0, 2\n"
"mcr p15, 0, %0, c13, c0, 3\n"
: : "r" (tls));
}
#define curthread get_curthread()
#else
#define get_pcpu() pcpup
#endif
#define PCPU_GET(member) (get_pcpu()->pc_ ## member)
#define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
#define PCPU_INC(member) PCPU_ADD(member, 1)
#define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
#define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
void pcpu0_init(void);
#endif /* _KERNEL */
#endif /* !_MACHINE_PCPU_H_ */
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