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sbusvar.h revision 1.21 
      1 /*	$NetBSD: sbusvar.h,v 1.21 2005/02/04 02:10:47 perry Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Paul Kranenburg.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _SBUS_VAR_H
     40 #define _SBUS_VAR_H
     41 
     42 #if defined(_KERNEL_OPT) && (defined(__sparc__) || defined(__sparc64__))
     43 #include "opt_sparc_arch.h"
     44 #endif
     45 
     46 #include <machine/bsd_openprom.h>
     47 
     48 struct sbus_softc;
     49 
     50 /*
     51  * S-bus variables.
     52  */
     53 struct sbusdev {
     54 	struct	device *sd_dev;		/* backpointer to generic */
     55 	struct	sbusdev *sd_bchain;	/* forward link in bus chain */
     56 	void	(*sd_reset)(struct device *);
     57 };
     58 
     59 typedef u_int32_t sbus_slot_t;
     60 typedef u_int32_t sbus_offset_t;
     61 
     62 /*
     63  * Sbus driver attach arguments.
     64  */
     65 struct sbus_attach_args {
     66 	int		sa_placeholder;	/* for obio attach args sharing */
     67 	bus_space_tag_t	sa_bustag;
     68 	bus_dma_tag_t	sa_dmatag;
     69 	char		*sa_name;	/* PROM node name */
     70 	int		sa_node;	/* PROM handle */
     71 	struct openprom_addr *sa_reg;	/* Sbus register space for device */
     72 	int		sa_nreg;	/* Number of Sbus register spaces */
     73 #define sa_slot		sa_reg[0].oa_space
     74 #define sa_offset	sa_reg[0].oa_base
     75 #define sa_size		sa_reg[0].oa_size
     76 
     77 	struct openprom_intr *sa_intr;	/* Sbus interrupts for device */
     78 	int		sa_nintr;	/* Number of interrupts */
     79 #define sa_pri		sa_intr[0].oi_pri
     80 
     81 	u_int32_t	*sa_promvaddrs;/* PROM-supplied virtual addresses -- 32-bit */
     82 	int		sa_npromvaddrs;	/* Number of PROM VAs */
     83 #define sa_promvaddr	sa_promvaddrs[0]
     84 	int		sa_frequency;	/* SBus clockrate */
     85 };
     86 
     87 /* sbus_attach_internal() is also used from obio.c */
     88 void	sbus_attach_common(struct sbus_softc *, char *, int,
     89 				const char * const *);
     90 int	sbus_print(void *, const char *);
     91 
     92 void	sbus_establish(struct sbusdev *, struct device *);
     93 
     94 int	sbus_setup_attach_args(
     95 		struct sbus_softc *,
     96 		bus_space_tag_t,
     97 		bus_dma_tag_t,
     98 		int,			/*node*/
     99 		struct sbus_attach_args *);
    100 
    101 void	sbus_destroy_attach_args(struct sbus_attach_args *);
    102 
    103 #define sbus_bus_map(tag, slot, offset, sz, flags, hp) \
    104 	bus_space_map(tag, BUS_ADDR(slot,offset), sz, flags, hp)
    105 bus_addr_t	sbus_bus_addr(bus_space_tag_t, u_int, u_int);
    106 void	sbus_promaddr_to_handle(bus_space_tag_t, u_int,
    107 	bus_space_handle_t *);
    108 
    109 #if notyet
    110 /* variables per Sbus */
    111 struct sbus_softc {
    112 	struct	device sc_dev;		/* base device */
    113 	bus_space_tag_t	sc_bustag;
    114 	bus_dma_tag_t	sc_dmatag;
    115 	int	sc_clockfreq;		/* clock frequency (in Hz) */
    116 	struct	sbusdev *sc_sbdev;	/* list of all children */
    117 	struct	openprom_range *sc_range;
    118 	int	sc_nrange;
    119 	int	sc_burst;		/* burst transfer sizes supported */
    120 	/* machdep stuff follows here */
    121 	int	*sc_intr2ipl;		/* Interrupt level translation */
    122 };
    123 #endif
    124 
    125 
    126 /*
    127  * PROM-reported DMA burst sizes for the SBus
    128  */
    129 #define SBUS_BURST_1	0x1
    130 #define SBUS_BURST_2	0x2
    131 #define SBUS_BURST_4	0x4
    132 #define SBUS_BURST_8	0x8
    133 #define SBUS_BURST_16	0x10
    134 #define SBUS_BURST_32	0x20
    135 #define SBUS_BURST_64	0x40
    136 
    137 /* We use #defined(SUN4*) here while the ports are in flux */
    138 #if defined(SUN4) || defined(SUN4C) || defined(SUN4M) || defined(SUN4D)
    139 #include <sparc/dev/sbusvar.h>
    140 #elif defined(SUN4U)
    141 #include <sparc64/dev/sbusvar.h>
    142 #endif
    143 
    144 #endif /* _SBUS_VAR_H */
    145