42f0ddd465
instead of burying that in the atpic(4) code as atpic(4) is not the only user of elcr(4). Change the elcr(4) code to export a global elcr_found variable that other code can check to see if a valid ELCR was found. MFC after: 1 month
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/*-
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* Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
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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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#ifdef _KERNEL
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/* With I/O APIC's we can have up to 191 interrupts. */
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#define NUM_IO_INTS 191
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#define INTRCNT_COUNT (1 + NUM_IO_INTS * 2)
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#ifndef LOCORE
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typedef void inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
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#define IDTVEC(name) __CONCAT(X,name)
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struct intsrc;
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/*
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* Methods that a PIC provides to mask/unmask a given interrupt source,
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* "turn on" the interrupt on the CPU side by setting up an IDT entry, and
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* return the vector associated with this source.
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*/
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struct pic {
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void (*pic_enable_source)(struct intsrc *);
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void (*pic_disable_source)(struct intsrc *, int);
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void (*pic_eoi_source)(struct intsrc *);
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void (*pic_enable_intr)(struct intsrc *);
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int (*pic_vector)(struct intsrc *);
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int (*pic_source_pending)(struct intsrc *);
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void (*pic_suspend)(struct intsrc *);
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void (*pic_resume)(struct intsrc *);
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int (*pic_config_intr)(struct intsrc *, enum intr_trigger,
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enum intr_polarity);
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};
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/* Flags for pic_disable_source() */
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enum {
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PIC_EOI,
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PIC_NO_EOI,
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};
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/*
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* An interrupt source. The upper-layer code uses the PIC methods to
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* control a given source. The lower-layer PIC drivers can store additional
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* private data in a given interrupt source such as an interrupt pin number
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* or an I/O APIC pointer.
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*/
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struct intsrc {
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struct pic *is_pic;
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struct ithd *is_ithread;
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u_long *is_count;
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u_long *is_straycount;
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u_int is_index;
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};
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struct intrframe;
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extern struct mtx icu_lock;
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extern int elcr_found;
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/* XXX: The elcr_* prototypes probably belong somewhere else. */
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int elcr_probe(void);
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enum intr_trigger elcr_read_trigger(u_int irq);
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void elcr_resume(void);
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void elcr_write_trigger(u_int irq, enum intr_trigger trigger);
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int intr_add_handler(const char *name, int vector, driver_intr_t handler,
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void *arg, enum intr_type flags, void **cookiep);
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int intr_config_intr(int vector, enum intr_trigger trig,
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enum intr_polarity pol);
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void intr_execute_handlers(struct intsrc *isrc, struct intrframe *iframe);
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struct intsrc *intr_lookup_source(int vector);
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int intr_register_source(struct intsrc *isrc);
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int intr_remove_handler(void *cookie);
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void intr_resume(void);
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void intr_suspend(void);
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void intrcnt_add(const char *name, u_long **countp);
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#endif /* !LOCORE */
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#endif /* _KERNEL */
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#endif /* !__MACHINE_INTR_MACHDEP_H__ */
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