169 lines
5.0 KiB
C
169 lines
5.0 KiB
C
/* $NetBSD: picvar.h,v 1.7 2012/09/01 00:00:42 matt Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ARM_PIC_PICVAR_H_
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#define _ARM_PIC_PICVAR_H_
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#ifdef MULTIPROCESSOR
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#include <sys/kcpuset.h>
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#endif
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int _splraise(int);
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int _spllower(int);
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void splx(int);
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const char *
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intr_typename(int);
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struct pic_softc;
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struct intrsource;
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struct cpu_info;
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#define IPI_AST 0 /* just get an interrupt */
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#define IPI_XCALL 1 /* xcall */
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#define IPI_NOP 2 /* just get an interrupt (armv6) */
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#ifndef __HAVE_PREEMPTION
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#define NIPI 3
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#else
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#define IPI_KPREEMPT 4 /* cause a preemption */
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#define NIPI 4
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#endif
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int pic_handle_intr(void *);
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void pic_mark_pending(struct pic_softc *pic, int irq);
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void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is);
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uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base,
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uint32_t pending);
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void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type,
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int (*func)(void *), void *arg);
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int pic_alloc_irq(struct pic_softc *pic);
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void pic_disestablish_source(struct intrsource *is);
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void pic_do_pending_ints(register_t psw, int newipl, void *frame);
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void pic_dispatch(struct intrsource *is, void *frame);
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void *intr_establish(int irq, int ipl, int type, int (*func)(void *),
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void *arg);
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void intr_disestablish(void *);
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#ifdef MULTIPROCESSOR
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void intr_cpu_init(struct cpu_info *);
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void intr_ipi_send(const kcpuset_t *, u_long ipi);
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#endif
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#ifdef _INTR_PRIVATE
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#include "opt_arm_intr_impl.h"
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#include <sys/evcnt.h>
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#include <sys/percpu.h>
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#ifndef PIC_MAXPICS
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#define PIC_MAXPICS 32
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#endif
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#ifndef PIC_MAXSOURCES
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#define PIC_MAXSOURCES 64
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#endif
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#ifndef PIC_MAXMAXSOURCES
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#define PIC_MAXMAXSOURCES 128
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#endif
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struct intrsource {
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int (*is_func)(void *);
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void *is_arg;
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struct pic_softc *is_pic; /* owning PIC */
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uint8_t is_type; /* IST_xxx */
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uint8_t is_ipl; /* IPL_xxx */
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uint8_t is_irq; /* local to pic */
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uint8_t is_iplidx;
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char is_source[16];
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};
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struct pic_percpu {
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struct evcnt *pcpu_evs;
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char *pcpu_name;
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uint32_t pcpu_magic;
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};
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#define PICPERCPU_MAGIC 0xfeedface
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struct pic_softc {
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const struct pic_ops *pic_ops;
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struct intrsource **pic_sources;
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volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32];
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volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32];
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volatile uint32_t pic_pending_ipls;
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size_t pic_maxsources;
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percpu_t *pic_percpu;
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uint8_t pic_id;
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int16_t pic_irqbase;
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char pic_name[14];
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};
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struct pic_ops {
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void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t);
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void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t);
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int (*pic_find_pending_irqs)(struct pic_softc *);
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void (*pic_establish_irq)(struct pic_softc *, struct intrsource *);
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void (*pic_source_name)(struct pic_softc *, int, char *, size_t);
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#ifdef __HAVE_PIC_SET_PRIORITY
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void (*pic_set_priority)(struct pic_softc *, int);
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#endif
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#ifdef MULTIPROCESSOR
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void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *);
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void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long);
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#endif
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};
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#ifdef __HAVE_PIC_SET_PRIORITY
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/*
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* This is used to update a hardware pic with a value corresponding
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* to the ipl being set.
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*/
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struct cpu_info;
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void pic_set_priority(struct cpu_info *, int);
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#else
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/* Using an inline causes catch-22 problems with cpu.h */
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#define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl)))
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#endif
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void pic_add(struct pic_softc *, int);
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void pic_do_pending_int(void);
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#ifdef MULTIPROCESSOR
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int pic_ipi_nop(void *);
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int pic_ipi_xcall(void *);
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#endif
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#ifdef __HAVE_PIC_FAST_SOFTINTS
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int pic_handle_softint(void *);
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#endif
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extern struct pic_softc * pic_list[PIC_MAXPICS];
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#endif /* _INTR_PRIVATE */
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#endif /* _ARM_PIC_PICVAR_H_ */
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