98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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* All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_INTR_MACHDEP_H_
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#define _MACHINE_INTR_MACHDEP_H_
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#define NPIL (1 << 4)
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#define NIV (1 << 11)
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#define IQ_SIZE (NPIL * 2)
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#define IQ_MASK (IQ_SIZE - 1)
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#define IH_SHIFT 3
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#define IQE_SHIFT 5
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#define IV_SHIFT 5
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#define PIL_LOW 1 /* stray interrupts */
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#define PIL_ITHREAD 2 /* interrupts that use ithreads */
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#define PIL_FAST 13 /* fast interrupts */
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#define PIL_TICK 14
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typedef void ih_func_t(struct trapframe *);
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typedef void iv_func_t(void *);
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struct intr_handler {
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ih_func_t *ih_func;
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};
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struct iqe {
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u_int iqe_tag;
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u_int iqe_pri;
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u_long iqe_vec;
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iv_func_t *iqe_func;
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void *iqe_arg;
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};
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struct intr_queue {
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struct iqe iq_queue[IQ_SIZE]; /* must be first */
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u_long iq_head;
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u_long iq_tail;
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};
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struct ithd;
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struct intr_vector {
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iv_func_t *iv_func; /* must be first */
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void *iv_arg;
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struct ithd *iv_ithd;
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u_int iv_pri;
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int iv_stray;
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};
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extern struct intr_handler intr_handlers[];
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extern struct intr_queue intr_queues[];
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extern struct intr_vector intr_vectors[];
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static __inline void
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intr_dispatch(int level, struct trapframe *tf)
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{
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intr_handlers[level].ih_func(tf);
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}
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void intr_setup(int level, ih_func_t *ihf, int pri, iv_func_t *ivf,
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void *iva);
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void intr_init(void);
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int inthand_add(const char *name, int vec, void (*handler)(void *),
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void *arg, int flags, void **cookiep);
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int inthand_remove(int vec, void *cookie);
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ih_func_t intr_dequeue;
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#endif
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