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      1 /*	$NetBSD: sbusvar.h,v 1.27 2009/09/17 16:28:12 tsutsui 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _SBUS_VAR_H
     33 #define _SBUS_VAR_H
     34 
     35 #if defined(_KERNEL_OPT) && (defined(__sparc__) || defined(__sparc64__))
     36 #include "opt_sparc_arch.h"
     37 #endif
     38 
     39 #include <machine/bsd_openprom.h>
     40 
     41 struct sbus_softc;
     42 
     43 typedef u_int32_t sbus_slot_t;
     44 typedef u_int32_t sbus_offset_t;
     45 
     46 /*
     47  * Sbus driver attach arguments.
     48  */
     49 struct sbus_attach_args {
     50 	int		sa_placeholder;	/* for obio attach args sharing */
     51 	bus_space_tag_t	sa_bustag;
     52 	bus_dma_tag_t	sa_dmatag;
     53 	char		*sa_name;	/* PROM node name */
     54 	int		sa_node;	/* PROM handle */
     55 	struct openprom_addr *sa_reg;	/* Sbus register space for device */
     56 	int		sa_nreg;	/* Number of Sbus register spaces */
     57 #define sa_slot		sa_reg[0].oa_space
     58 #define sa_offset	sa_reg[0].oa_base
     59 #define sa_size		sa_reg[0].oa_size
     60 
     61 	struct openprom_intr *sa_intr;	/* Sbus interrupts for device */
     62 	int		sa_nintr;	/* Number of interrupts */
     63 #define sa_pri		sa_intr[0].oi_pri
     64 
     65 	u_int32_t	*sa_promvaddrs;/* PROM-supplied virtual addresses -- 32-bit */
     66 	int		sa_npromvaddrs;	/* Number of PROM VAs */
     67 #define sa_promvaddr	sa_promvaddrs[0]
     68 	int		sa_frequency;	/* SBus clockrate */
     69 };
     70 
     71 /* sbus_attach_internal() is also used from obio.c */
     72 void	sbus_attach_common(struct sbus_softc *, const char *, int,
     73 				const char * const *);
     74 int	sbus_print(void *, const char *);
     75 
     76 int	sbus_setup_attach_args(
     77 		struct sbus_softc *,
     78 		bus_space_tag_t,
     79 		bus_dma_tag_t,
     80 		int,			/*node*/
     81 		struct sbus_attach_args *);
     82 
     83 void	sbus_destroy_attach_args(struct sbus_attach_args *);
     84 
     85 #define sbus_bus_map(tag, slot, offset, sz, flags, hp) \
     86 	bus_space_map(tag, BUS_ADDR(slot,offset), sz, flags, hp)
     87 bus_addr_t	sbus_bus_addr(bus_space_tag_t, u_int, u_int);
     88 void	sbus_promaddr_to_handle(bus_space_tag_t, u_int,
     89 	bus_space_handle_t *);
     90 
     91 #if notyet
     92 /* variables per Sbus */
     93 struct sbus_softc {
     94 	device_t sc_dev;		/* base device */
     95 	bus_space_tag_t	sc_bustag;
     96 	bus_dma_tag_t	sc_dmatag;
     97 	int	sc_clockfreq;		/* clock frequency (in Hz) */
     98 	struct	openprom_range *sc_range;
     99 	int	sc_nrange;
    100 	int	sc_burst;		/* burst transfer sizes supported */
    101 	/* machdep stuff follows here */
    102 	int	*sc_intr2ipl;		/* Interrupt level translation */
    103 };
    104 #endif
    105 
    106 
    107 /*
    108  * PROM-reported DMA burst sizes for the SBus
    109  */
    110 #define SBUS_BURST_1	0x1
    111 #define SBUS_BURST_2	0x2
    112 #define SBUS_BURST_4	0x4
    113 #define SBUS_BURST_8	0x8
    114 #define SBUS_BURST_16	0x10
    115 #define SBUS_BURST_32	0x20
    116 #define SBUS_BURST_64	0x40
    117 
    118 /* We use #defined(SUN4*) here while the ports are in flux */
    119 #if defined(SUN4) || defined(SUN4C) || defined(SUN4M) || defined(SUN4D)
    120 #include <sparc/dev/sbusvar.h>
    121 #elif defined(SUN4U)
    122 #include <sparc64/dev/sbusvar.h>
    123 #endif
    124 
    125 #endif /* _SBUS_VAR_H */
    126