/* $NetBSD: intr.h,v 1.32 2000/08/15 22:16:19 thorpej Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 1997 Christopher G. Demetriou. All rights reserved. * Copyright (c) 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #ifndef _ALPHA_INTR_H_ #define _ALPHA_INTR_H_ #include #include #include #include /* * Alpha interrupts come in at one of 4 levels: * * software interrupt level * i/o level 1 * i/o level 2 * clock level * * However, since we do not have any way to know which hardware * level a particular i/o interrupt comes in on, we have to * whittle it down to 3. */ #define IPL_NONE 1 /* disable only this interrupt */ #define IPL_BIO 1 /* disable block I/O interrupts */ #define IPL_NET 1 /* disable network interrupts */ #define IPL_TTY 1 /* disable terminal interrupts */ #define IPL_CLOCK 2 /* disable clock interrupts */ #define IPL_HIGH 3 /* disable all interrupts */ #define IPL_SERIAL 1 /* disable serial interrupts */ #define IPL_SOFTSERIAL 0 /* serial software interrupts */ #define IPL_SOFTNET 1 /* network software interrupts */ #define IPL_SOFTCLOCK 2 /* clock software interrupts */ #define IPL_SOFT 3 /* other software interrupts */ #define IPL_NSOFT 4 #define IPL_SOFTNAMES { \ "serial", \ "net", \ "clock", \ "misc", \ } #define IST_UNUSABLE -1 /* interrupt cannot be used */ #define IST_NONE 0 /* none (dummy) */ #define IST_PULSE 1 /* pulsed */ #define IST_EDGE 2 /* edge-triggered */ #define IST_LEVEL 3 /* level-triggered */ #ifdef _KERNEL /* IPL-lowering/restoring macros */ void spl0(void); static __inline void splx(int s) { if (s == ALPHA_PSL_IPL_0) spl0(); else alpha_pal_swpipl(s); } #define spllowersoftclock() ((void)alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT)) /* IPL-raising functions/macros */ static __inline int _splraise(int s) { int cur = alpha_pal_rdps() & ALPHA_PSL_IPL_MASK; return (s > cur ? alpha_pal_swpipl(s) : cur); } #define splsoft() _splraise(ALPHA_PSL_IPL_SOFT) #define splsoftserial() splsoft() #define splsoftclock() splsoft() #define splsoftnet() splsoft() #define splnet() _splraise(ALPHA_PSL_IPL_IO) #define splbio() _splraise(ALPHA_PSL_IPL_IO) #define splimp() _splraise(ALPHA_PSL_IPL_IO) #define spltty() _splraise(ALPHA_PSL_IPL_IO) #define splserial() _splraise(ALPHA_PSL_IPL_IO) #define splclock() _splraise(ALPHA_PSL_IPL_CLOCK) #define splstatclock() _splraise(ALPHA_PSL_IPL_CLOCK) #define splhigh() _splraise(ALPHA_PSL_IPL_HIGH) #define spllpt() spltty() /* * Interprocessor interrupts. In order how we want them processed. */ #define ALPHA_IPI_HALT 0x0000000000000001UL #define ALPHA_IPI_TBIA 0x0000000000000002UL #define ALPHA_IPI_TBIAP 0x0000000000000004UL #define ALPHA_IPI_SHOOTDOWN 0x0000000000000008UL #define ALPHA_IPI_IMB 0x0000000000000010UL #define ALPHA_IPI_AST 0x0000000000000020UL #define ALPHA_IPI_SYNCH_FPU 0x0000000000000040UL #define ALPHA_IPI_DISCARD_FPU 0x0000000000000080UL #define ALPHA_NIPIS 8 /* must not exceed 64 */ typedef void (*ipifunc_t)(void); extern ipifunc_t ipifuncs[ALPHA_NIPIS]; void alpha_send_ipi(unsigned long, unsigned long); void alpha_broadcast_ipi(unsigned long); void alpha_multicast_ipi(unsigned long, unsigned long); /* * Alpha shared-interrupt-line common code. */ struct alpha_shared_intrhand { TAILQ_ENTRY(alpha_shared_intrhand) ih_q; struct alpha_shared_intr *ih_intrhead; int (*ih_fn)(void *); void *ih_arg; int ih_level; unsigned int ih_num; }; struct alpha_shared_intr { TAILQ_HEAD(,alpha_shared_intrhand) intr_q; struct evcnt intr_evcnt; char *intr_string; void *intr_private; int intr_sharetype; int intr_dfltsharetype; int intr_nstrays; int intr_maxstrays; }; #define ALPHA_SHARED_INTR_DISABLE(asi, num) \ ((asi)[num].intr_maxstrays != 0 && \ (asi)[num].intr_nstrays == (asi)[num].intr_maxstrays) /* * simulated software interrupt register */ extern u_int64_t ssir; #define setsoft(x) atomic_setbits_ulong(&ssir, 1 << (x)) #define __GENERIC_SOFT_INTERRUPTS struct alpha_soft_intrhand { LIST_ENTRY(alpha_soft_intrhand) sih_q; struct alpha_soft_intr *sih_intrhead; void (*sih_fn)(void *); void *sih_arg; int sih_pending; }; struct alpha_soft_intr { LIST_HEAD(, alpha_soft_intrhand) softintr_q; struct evcnt softintr_evcnt; struct simplelock softintr_slock; unsigned long softintr_ipl; }; void *softintr_establish(int, void (*)(void *), void *); void softintr_disestablish(void *); void softintr_init(void); void softintr_dispatch(void); #define softintr_schedule(arg) \ do { \ struct alpha_soft_intrhand *__sih = (arg); \ __sih->sih_pending = 1; \ setsoft(__sih->sih_intrhead->softintr_ipl); \ } while (0) /* XXX For legacy software interrupts. */ extern struct alpha_soft_intrhand *softnet_intrhand; extern struct alpha_soft_intrhand *softclock_intrhand; #define setsoftnet() softintr_schedule(softnet_intrhand) #define setsoftclock() softintr_schedule(softclock_intrhand) struct alpha_shared_intr *alpha_shared_intr_alloc(unsigned int, unsigned int); int alpha_shared_intr_dispatch(struct alpha_shared_intr *, unsigned int); void *alpha_shared_intr_establish(struct alpha_shared_intr *, unsigned int, int, int, int (*)(void *), void *, const char *); void alpha_shared_intr_disestablish(struct alpha_shared_intr *, void *, const char *); int alpha_shared_intr_get_sharetype(struct alpha_shared_intr *, unsigned int); int alpha_shared_intr_isactive(struct alpha_shared_intr *, unsigned int); void alpha_shared_intr_set_dfltsharetype(struct alpha_shared_intr *, unsigned int, int); void alpha_shared_intr_set_maxstrays(struct alpha_shared_intr *, unsigned int, int); void alpha_shared_intr_stray(struct alpha_shared_intr *, unsigned int, const char *); void alpha_shared_intr_set_private(struct alpha_shared_intr *, unsigned int, void *); void *alpha_shared_intr_get_private(struct alpha_shared_intr *, unsigned int); char *alpha_shared_intr_string(struct alpha_shared_intr *, unsigned int); struct evcnt *alpha_shared_intr_evcnt(struct alpha_shared_intr *, unsigned int); void set_iointr(void (*)(void *, unsigned long)); #endif /* _KERNEL */ #endif /* ! _ALPHA_INTR_H_ */