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Support for ISA programmed I/O functions.

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cgd 1995-06-28 01:16:33 +00:00
parent ba164ee03d
commit 5cc82e159a
1 changed files with 88 additions and 0 deletions
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sys/arch/alpha/include/pio.h Normal file
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/* $NetBSD: pio.h,v 1.1 1995/06/28 01:16:33 cgd Exp $ */
/*
* Copyright (c) 1995 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.
*/
/* Prototypes for ISA-ish I/O space access functions. */
/*
* XXX
* XXX THIS WILL LIKELY HAVE TO BE COMPLETELY CHANGED.
* XXX e.g. to take softc for bus.
* XXX
*/
struct isa_pio_fcns {
/* input functions */
u_int8_t (*isa_inb) __P((int port));
void (*isa_insb) __P((int port, void *addr, int cnt));
u_int16_t (*isa_inw) __P((int port));
void (*isa_insw) __P((int port, void *addr, int cnt));
u_int32_t (*isa_inl) __P((int port));
void (*isa_insl) __P((int port, void *addr, int cnt));
/* output functions */
void (*isa_outb) __P((int port, u_int8_t datum));
void (*isa_outsb) __P((int port, void *addr, int cnt));
void (*isa_outw) __P((int port, u_int16_t datum));
void (*isa_outsw) __P((int port, void *addr, int cnt));
void (*isa_outl) __P((int port, u_int32_t datum));
void (*isa_outsl) __P((int port, void *addr, int cnt));
};
/*
* Global which tells which set of functions are correct
* for this machine.
*/
struct isa_pio_fcns *isa_pio_fcns;
/*
* Individual chipsets' versions.
*/
extern struct isa_pio_fcns apecs_pio_fcns;
extern struct isa_pio_fcns jensen_pio_fcns;
/*
* macros to use input functions
*/
#define inb(p) (*isa_pio_fcns->isa_inb)(p)
#define insb(p, a, c) (*isa_pio_fcns->isa_insb)(p, a, c)
#define inw(p) (*isa_pio_fcns->isa_inw)(p)
#define insw(p, a, c) (*isa_pio_fcns->isa_insw)(p, a, c)
#define inl(p) (*isa_pio_fcns->isa_inl)(p)
#define insl(p, a, c) (*isa_pio_fcns->isa_insl)(p, a, c)
/*
* macros to use output functions
*/
#define outb(p, d) (*isa_pio_fcns->isa_outb)(p, d)
#define outsb(p, a, c) (*isa_pio_fcns->isa_outsb)(p, a, c)
#define outw(p, d) (*isa_pio_fcns->isa_outw)(p, d)
#define outsw(p, a, c) (*isa_pio_fcns->isa_outsw)(p, a, c)
#define outl(p, d) (*isa_pio_fcns->isa_outl)(p, d)
#define outsl(p, a, c) (*isa_pio_fcns->isa_outsl)(p, a, c)