Return to softintr.h CVS log

Up to [local] / sys / arch / arm / include

Annotation of sys/arch/arm/include/softintr.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: softintr.h,v 1.2 2007/05/10 17:59:24 deraadt Exp $    */
                      2: /*     $NetBSD: softintr.h,v 1.1 2002/01/29 22:54:14 thorpej Exp $     */
                      3:
                      4: /*
                      5:  * Copyright (c) 2001 Wasabi Systems, Inc.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed for the NetBSD Project by
                     21:  *     Wasabi Systems, Inc.
                     22:  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
                     23:  *    or promote products derived from this software without specific prior
                     24:  *    written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     28:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     29:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
                     30:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     31:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     32:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     33:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     34:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     35:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     36:  * POSSIBILITY OF SUCH DAMAGE.
                     37:  */
                     38:
                     39: #ifndef        _ARM_SOFTINTR_H_
                     40: #define        _ARM_SOFTINTR_H_
                     41:
                     42: #ifdef _KERNEL
                     43:
                     44: /*
                     45:  * Generic software interrupt support for all ARM platforms.
                     46:  *
                     47:  * To use this code, include <arm/softintr.h> from your platform's
                     48:  * <machine/intr.h>.
                     49:  */
                     50:
                     51: #define        SI_SOFT                 0       /* for IPL_SOFT */
                     52: #define        SI_SOFTCLOCK            1       /* for IPL_SOFTCLOCK */
                     53: #define        SI_SOFTNET              2       /* for IPL_SOFTNET */
                     54: #define        SI_SOFTSERIAL           3       /* for IPL_SOFTSERIAL */
                     55:
                     56: #define        SI_NQUEUES              4
                     57:
                     58: #define        SI_QUEUENAMES {                                                 \
                     59:        "generic",                                                      \
                     60:        "clock",                                                        \
                     61:        "net",                                                          \
                     62:        "serial",                                                       \
                     63: }
                     64:
                     65: struct soft_intrhand {
                     66:        TAILQ_ENTRY(soft_intrhand) sih_list;
                     67:        void (*sih_func)(void *);
                     68:        void *sih_arg;
                     69:        struct soft_intrq *sih_siq;
                     70:        int sih_pending;
                     71: };
                     72:
                     73: struct soft_intrq {
                     74:        TAILQ_HEAD(, soft_intrhand) siq_list;
                     75:        int siq_si;
                     76: };
                     77:
                     78: void   *softintr_establish(int, void (*)(void *), void *);
                     79: void   softintr_disestablish(void *);
                     80: void   softintr_init(void);
                     81: void   softintr_dispatch(int);
                     82:
                     83: #define        softintr_schedule(arg)                                          \
                     84: do {                                                                   \
                     85:        struct soft_intrhand *__sih = (arg);                            \
                     86:        struct soft_intrq *__siq = __sih->sih_siq;                      \
                     87:        int __s;                                                        \
                     88:                                                                        \
                     89:        __s = splhigh();                                                \
                     90:        if (__sih->sih_pending == 0) {                                  \
                     91:                TAILQ_INSERT_TAIL(&__siq->siq_list, __sih, sih_list);   \
                     92:                __sih->sih_pending = 1;                                 \
                     93:                _setsoftintr(__siq->siq_si);                            \
                     94:        }                                                               \
                     95:        splx(__s);                                                      \
                     96: } while (/*CONSTCOND*/0)
                     97:
                     98: /* XXX For legacy software interrupts. */
                     99: extern struct soft_intrhand *softnet_intrhand;
                    100:
                    101: #define        setsoftnet()    softintr_schedule(softnet_intrhand)
                    102:
                    103: #endif /* _KERNEL */
                    104:
                    105: #endif /* _ARM_SOFTINTR_H_ */