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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_X_CALL_H
#define _SYS_X_CALL_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* For x86, we only have three cross call levels:
* a low, med and high. (see xc_levels.h)
*/
#include <sys/xc_levels.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* States of a cross-call session. (stored in xc_state field of the
* per-CPU area).
*/
#define XC_DONE 0 /* x-call session done */
#define XC_HOLD 1 /* spin doing nothing */
#define XC_SYNC_OP 2 /* perform a synchronous operation */
#define XC_CALL_OP 3 /* perform a call operation */
#define XC_WAIT 4 /* capture/release. callee has seen wait */
#ifndef _ASM
#include <sys/cpuvar.h>
typedef intptr_t xc_arg_t;
typedef int (*xc_func_t)(xc_arg_t, xc_arg_t, xc_arg_t);
struct xc_mbox {
xc_func_t func;
xc_arg_t arg1;
xc_arg_t arg2;
xc_arg_t arg3;
cpuset_t set;
int saved_pri;
};
#if defined(_MACHDEP)
extern cpuset_t cpu_ready_set;
#endif
/*
* Cross-call routines.
*/
#if defined(_KERNEL)
extern void xc_init(void);
extern uint_t xc_serv(caddr_t, caddr_t);
extern void xc_call(xc_arg_t, xc_arg_t, xc_arg_t, int, cpuset_t, xc_func_t);
extern void xc_trycall(xc_arg_t, xc_arg_t, xc_arg_t, cpuset_t, xc_func_t);
extern void xc_sync(xc_arg_t, xc_arg_t, xc_arg_t, int, cpuset_t, xc_func_t);
extern void xc_capture_cpus(cpuset_t);
extern void xc_release_cpus(void);
#if defined(TRAPTRACE)
/*
* X-call tracing can be interleaved with trap tracing
*/
extern void xc_make_trap_trace_entry(uint8_t, int, ulong_t);
#define XC_TRACE(m, pri, arg) xc_make_trap_trace_entry(m, pri, arg)
#else /* TRAPTRACE */
#define XC_TRACE(m, pri, arg) /* nothing */
#endif /* TRAPTRACE */
#endif /* _KERNEL */
#endif /* !_ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_X_CALL_H */
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