140 lines
4.8 KiB
C
140 lines
4.8 KiB
C
/* $NetBSD: isavar.h,v 1.15 1995/04/17 12:09:15 cgd Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1995 Chris G. Demetriou
|
|
* Copyright (c) 1992 Berkeley Software Design, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* 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 Berkeley Software
|
|
* Design, Inc.
|
|
* 4. The name of Berkeley Software Design must not be used to endorse
|
|
* or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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.
|
|
*
|
|
* BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp
|
|
*/
|
|
|
|
/*
|
|
* Definitions for ISA autoconfiguration.
|
|
*/
|
|
|
|
#include <sys/queue.h>
|
|
|
|
/*
|
|
* ISA driver attach arguments
|
|
*/
|
|
struct isa_attach_args {
|
|
int ia_iobase; /* base i/o address */
|
|
int ia_iosize; /* span of ports used */
|
|
int ia_irq; /* interrupt request */
|
|
int ia_drq; /* DMA request */
|
|
int ia_maddr; /* physical i/o mem addr */
|
|
u_int ia_msize; /* size of i/o memory */
|
|
void *ia_aux; /* driver specific */
|
|
};
|
|
|
|
#define IOBASEUNK -1 /* i/o address is unknown */
|
|
#define IRQUNK -1 /* interrupt request line is unknown */
|
|
#define DRQUNK -1 /* DMA request line is unknown */
|
|
#define MADDRUNK -1 /* shared memory address is unknown */
|
|
|
|
/*
|
|
* Per-device ISA variables
|
|
*/
|
|
struct isadev {
|
|
struct device *id_dev; /* back pointer to generic */
|
|
TAILQ_ENTRY(isadev)
|
|
id_bchain; /* bus chain */
|
|
};
|
|
|
|
/*
|
|
* ISA master bus
|
|
*/
|
|
struct isa_softc {
|
|
struct device sc_dev; /* base device */
|
|
TAILQ_HEAD(, isadev)
|
|
sc_subdevs; /* list of all children */
|
|
};
|
|
|
|
#define cf_iobase cf_loc[0]
|
|
#define cf_iosize cf_loc[1]
|
|
#define cf_maddr cf_loc[2]
|
|
#define cf_msize cf_loc[3]
|
|
#define cf_irq cf_loc[4]
|
|
#define cf_drq cf_loc[5]
|
|
|
|
/*
|
|
* ISA interrupt handler manipulation.
|
|
*
|
|
* To establish an ISA interrupt handler, a driver calls isa_intr_establish()
|
|
* with the interrupt number, type, level, function, and function argument of
|
|
* the interrupt it wants to handle. Isa_intr_establish() returns an opaque
|
|
* handle to an event descriptor if it succeeds, and invokes panic() if it
|
|
* fails. (XXX It should return NULL, then drivers should handle that, but
|
|
* what should they do?) Interrupt handlers should return 0 for "interrupt
|
|
* not for me", 1 for "I took care of it", or -1 for "I guess it was mine,
|
|
* but I wasn't expecting it."
|
|
*
|
|
* To remove an interrupt handler, the driver calls isa_intr_disestablish()
|
|
* with the handle returned by isa_intr_establish() for that handler.
|
|
*/
|
|
|
|
/* ISA interrupt sharing types */
|
|
typedef enum {
|
|
ISA_IST_NONE = 0, /* not yet assigned */
|
|
ISA_IST_PULSE, /* pulsed */
|
|
ISA_IST_EDGE, /* edge-triggered */
|
|
ISA_IST_LEVEL /* level-triggered */
|
|
} isa_intrtype;
|
|
|
|
/* ISA interrupt levels; system interrupt levels for ISA bus use */
|
|
typedef enum {
|
|
ISA_IPL_NONE, /* block only the interrupt's IRQ*/
|
|
ISA_IPL_BIO, /* block I/O interrupts */
|
|
ISA_IPL_NET, /* network */
|
|
ISA_IPL_TTY, /* terminal */
|
|
ISA_IPL_CLOCK, /* clock */
|
|
} isa_intrlevel;
|
|
|
|
void *isa_intr_establish __P((int intr, isa_intrtype type,
|
|
isa_intrlevel level, int (*ih_fun)(void *),
|
|
void *ih_arg));
|
|
void isa_intr_disestablish __P((void *handler));
|
|
char *isa_intr_typename __P((isa_intrtype type));
|
|
|
|
#ifdef NEWCONFIG
|
|
/*
|
|
* Establish a device as being on the ISA bus (XXX NOT IMPLEMENTED).
|
|
*/
|
|
void isa_establish __P((struct isadev *, struct device *));
|
|
#endif
|
|
|
|
/*
|
|
* software conventions
|
|
*/
|
|
typedef enum { BUS_ISA, BUS_EISA } isa_type;
|
|
|
|
extern isa_type isa_bustype; /* type of bus; XXX should be in softc */
|