1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_X_CALL_H 28 #define _SYS_X_CALL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 33 /* 34 * For x86, we only have three cross call levels: 35 * a low, med and high. (see xc_levels.h) 36 */ 37 #include <sys/xc_levels.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * States of a cross-call session. (stored in xc_state field of the 45 * per-CPU area). 46 */ 47 #define XC_DONE 0 /* x-call session done */ 48 #define XC_HOLD 1 /* spin doing nothing */ 49 #define XC_SYNC_OP 2 /* perform a synchronous operation */ 50 #define XC_CALL_OP 3 /* perform a call operation */ 51 #define XC_WAIT 4 /* capture/release. callee has seen wait */ 52 53 #ifndef _ASM 54 55 #include <sys/cpuvar.h> 56 57 typedef intptr_t xc_arg_t; 58 typedef int (*xc_func_t)(xc_arg_t, xc_arg_t, xc_arg_t); 59 60 struct xc_mbox { 61 xc_func_t func; 62 xc_arg_t arg1; 63 xc_arg_t arg2; 64 xc_arg_t arg3; 65 cpuset_t set; 66 int saved_pri; 67 }; 68 69 /* 70 * Cross-call routines. 71 */ 72 #if defined(_KERNEL) 73 74 extern void xc_init(void); 75 extern uint_t xc_serv(caddr_t, caddr_t); 76 extern void xc_call(xc_arg_t, xc_arg_t, xc_arg_t, int, cpuset_t, xc_func_t); 77 extern void xc_trycall(xc_arg_t, xc_arg_t, xc_arg_t, cpuset_t, xc_func_t); 78 extern void xc_sync(xc_arg_t, xc_arg_t, xc_arg_t, int, cpuset_t, xc_func_t); 79 extern void xc_wait_sync(xc_arg_t, xc_arg_t, xc_arg_t, int, cpuset_t, 80 xc_func_t); 81 extern void xc_capture_cpus(cpuset_t); 82 extern void xc_release_cpus(void); 83 84 #endif /* _KERNEL */ 85 86 #endif /* !_ASM */ 87 88 #ifdef __cplusplus 89 } 90 #endif 91 92 #endif /* _SYS_X_CALL_H */ 93