/* $NetBSD: intr.h,v 1.72 2017/01/14 00:35:37 christos Exp $ */ /*- * Copyright (c) 2000, 2001, 2002 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. * * 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 /* * The Alpha System Control Block. This is 8k long, and you get * 16 bytes per vector (i.e. the vector numbers are spaced 16 * apart). * * This is sort of a "shadow" SCB -- rather than the CPU jumping * to (SCBaddr + (16 * vector)), like it does on the VAX, we get * a vector number in a1. We use the SCB to look up a routine/arg * and jump to it. * * Since we use the SCB only for I/O interrupts, we make it shorter * than normal, starting it at vector 0x800 (the start of the I/O * interrupt vectors). */ #define SCB_IOVECBASE 0x0800 #define SCB_VECSIZE 0x0010 #define SCB_SIZE 0x2000 #define SCB_VECTOIDX(x) ((x) >> 4) #define SCB_IDXTOVEC(x) ((x) << 4) #define SCB_NIOVECS SCB_VECTOIDX(SCB_SIZE - SCB_IOVECBASE) struct scbvec { void (*scb_func)(void *, u_long); void *scb_arg; }; /* * 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 0 /* no interrupt level */ #define IPL_SOFTCLOCK 1 /* generic software interrupts */ #define IPL_SOFTBIO 1 /* generic software interrupts */ #define IPL_SOFTNET 1 /* generic software interrupts */ #define IPL_SOFTSERIAL 1 /* generic software interrupts */ #define IPL_VM 2 /* interrupts that can alloc mem */ #define IPL_SCHED 3 /* clock interrupts */ #define IPL_HIGH 4 /* all interrupts */ typedef int ipl_t; typedef struct { uint8_t _psl; } ipl_cookie_t; ipl_cookie_t makeiplcookie(ipl_t); #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 /* Simulated software interrupt register. */ extern volatile unsigned long ssir; /* IPL-lowering/restoring macros */ void spl0(void); static __inline void splx(int s) { if (s == ALPHA_PSL_IPL_0 && ssir != 0) spl0(); else alpha_pal_swpipl(s); } /* IPL-raising functions/macros */ static __inline int _splraise(int s) { int cur = alpha_pal_rdps() & ALPHA_PSL_IPL_MASK; return (s > cur ? (int)alpha_pal_swpipl(s) : cur); } #define splraiseipl(icookie) _splraise((icookie)._psl) #include /* * Interprocessor interrupts. In order how we want them processed. */ #define ALPHA_IPI_HALT (1UL << 0) #define ALPHA_IPI_MICROSET (1UL << 1) #define ALPHA_IPI_SHOOTDOWN (1UL << 2) #define ALPHA_IPI_IMB (1UL << 3) #define ALPHA_IPI_AST (1UL << 4) #define ALPHA_IPI_PAUSE (1UL << 5) #define ALPHA_IPI_XCALL (1UL << 6) #define ALPHA_IPI_GENERIC (1UL << 7) #define ALPHA_NIPIS 8 /* must not exceed 64 */ struct cpu_info; struct trapframe; void alpha_ipi_init(struct cpu_info *); void alpha_ipi_process(struct cpu_info *, struct trapframe *); 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) void softintr_dispatch(void); 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); int alpha_shared_intr_firstactive(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_reset_strays(struct alpha_shared_intr *, unsigned 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); extern struct scbvec scb_iovectab[]; void scb_init(void); void scb_set(u_long, void (*)(void *, u_long), void *, int); u_long scb_alloc(void (*)(void *, u_long), void *); void scb_free(u_long); #define SCB_ALLOC_FAILED ((u_long) -1) #endif /* _KERNEL */ #endif /* ! _ALPHA_INTR_H_ */