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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_
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <machine/pcb.h>
struct pcpu_stats {
u_long pcs_nasts; /* IPI_AST counter. */
u_long pcs_nclks; /* Clock interrupt counter. */
u_long pcs_nextints; /* ExtINT counter. */
u_long pcs_nhardclocks; /* IPI_HARDCLOCK counter. */
u_long pcs_nhighfps; /* IPI_HIGH_FP counter. */
u_long pcs_nhwints; /* Hardware int. counter. */
u_long pcs_npreempts; /* IPI_PREEMPT counter. */
u_long pcs_nrdvs; /* IPI_RENDEZVOUS counter. */
u_long pcs_nstops; /* IPI_STOP counter. */
u_long pcs_nstrays; /* Stray interrupt counter. */
};
struct pcpu_md {
struct pcb pcb; /* Used by IPI_STOP */
struct pmap *current_pmap; /* active pmap */
vm_offset_t vhpt; /* Address of VHPT */
uint64_t lid; /* local CPU ID */
uint64_t clock; /* Clock counter. */
uint64_t clock_load; /* Clock reload value. */
uint32_t clock_mode; /* Clock ET mode */
uint32_t awake:1; /* CPU is awake? */
struct pcpu_stats stats; /* Interrupt stats. */
void *xtrace_buffer;
uint64_t xtrace_tail;
#ifdef _KERNEL
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
#endif
};
#define PCPU_MD_FIELDS \
uint32_t pc_acpi_id; /* ACPI CPU id. */ \
struct pcpu_md pc_md; /* MD fields. */ \
char __pad[10*128]
#ifdef _KERNEL
struct pcpu;
register struct pcpu * volatile pcpup __asm__("r13");
static __inline __pure2 struct thread *
__curthread(void)
{
struct thread *td;
__asm("ld8.acq %0=[r13]" : "=r"(td));
return (td);
}
#define curthread (__curthread())
#define __pcpu_offset(name) __offsetof(struct pcpu, name)
#define __pcpu_type(name) __typeof(((struct pcpu *)0)->name)
#define PCPU_ADD(name, val) \
do { \
__pcpu_type(pc_ ## name) *nmp; \
critical_enter(); \
__asm __volatile("add %0=%1,r13;;" : \
"=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
*nmp += val; \
critical_exit(); \
} while (0)
#define PCPU_GET(name) \
({ __pcpu_type(pc_ ## name) *nmp; \
__pcpu_type(pc_ ## name) res; \
critical_enter(); \
__asm __volatile("add %0=%1,r13;;" : \
"=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
res = *nmp; \
critical_exit(); \
res; \
})
#define PCPU_INC(member) PCPU_ADD(member, 1)
#define PCPU_PTR(name) \
({ __pcpu_type(pc_ ## name) *nmp; \
__asm __volatile("add %0=%1,r13;;" : \
"=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
nmp; \
})
#define PCPU_SET(name, val) \
do { \
__pcpu_type(pc_ ## name) *nmp; \
critical_enter(); \
__asm __volatile("add %0=%1,r13;;" : \
"=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
*nmp = val; \
critical_exit(); \
} while (0)
#endif /* _KERNEL */
#endif /* !_MACHINE_PCPU_H_ */
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