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      1 /*	$NetBSD: if_bah_zbus.c,v 1.18 2020/02/24 12:20:29 rin Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Ignatios Souvatzis.
      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 #ifdef __m68k__
     33 #include "opt_m68k_arch.h"
     34 #endif
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: if_bah_zbus.c,v 1.18 2020/02/24 12:20:29 rin Exp $");
     38 
     39 /*
     40  * Driver frontend for the Commodore Busines Machines and the
     41  * Ameristar ARCnet card.
     42  */
     43 
     44 #include <sys/types.h>
     45 #include <sys/param.h>
     46 
     47 #include <sys/conf.h>
     48 #include <sys/device.h>
     49 #include <sys/mbuf.h>
     50 #include <sys/socket.h>
     51 #include <sys/systm.h>
     52 #include <sys/kernel.h>
     53 #include <sys/bus.h>
     54 
     55 #include <machine/cpu.h>
     56 #include <machine/intr.h>
     57 
     58 #include <net/if.h>
     59 #include <net/route.h>
     60 
     61 #include <net/if_arc.h>
     62 
     63 #include <amiga/amiga/device.h>
     64 #include <amiga/dev/zbusvar.h>
     65 
     66 #include <dev/ic/smc90cx6var.h>
     67 
     68 /*
     69  * A2060 software status per interface
     70  */
     71 struct bah_zbus_softc {
     72 	struct	bah_softc	sc_bah;
     73 	struct	bus_space_tag	sc_bst;
     74 	struct	isr		sc_isr;
     75 };
     76 
     77 int	bah_zbus_match(device_t, cfdata_t, void *);
     78 void	bah_zbus_attach(device_t, device_t, void *);
     79 void	bah_zbus_reset(struct bah_softc *, int);
     80 
     81 CFATTACH_DECL_NEW(bah_zbus, sizeof(struct bah_zbus_softc),
     82     bah_zbus_match, bah_zbus_attach, NULL, NULL);
     83 
     84 int
     85 bah_zbus_match(device_t parent, cfdata_t cf, void *aux)
     86 {
     87 	struct zbus_args *zap = aux;
     88 
     89 	if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
     90 		return (1);
     91 
     92 	return (0);
     93 }
     94 
     95 void
     96 bah_zbus_attach(device_t parent, device_t self, void *aux)
     97 {
     98 	struct bah_zbus_softc *bsc = device_private(self);
     99 	struct bah_softc *sc = &bsc->sc_bah;
    100 	struct zbus_args *zap = aux;
    101 	int rv;
    102 
    103 	sc->sc_dev = self;
    104 #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
    105 	printf("\n%s: attach(%p, %p, %p)\n",
    106 	    device_xname(self), parent, self, aux);
    107 #endif
    108 	bsc->sc_bst.base = (bus_addr_t)zap->va;
    109 	bsc->sc_bst.absm = &amiga_bus_stride_2;
    110 
    111 	sc->sc_bst_r = &bsc->sc_bst;
    112 	sc->sc_regs = bsc->sc_bst.base + 0x4000;
    113 
    114 	sc->sc_bst_m = &bsc->sc_bst;
    115 	sc->sc_mem = bsc->sc_bst.base + 0x8000;
    116 
    117 	sc->sc_reset = bah_zbus_reset;
    118 
    119 	rv = bah_attach_subr(sc);
    120 	if (rv != 0) {
    121 		aprint_error_dev(self, "bah_attach_subr failed(%d)\n", rv);
    122 		return;
    123 	}
    124 
    125 	bsc->sc_isr.isr_intr = bahintr;
    126 	bsc->sc_isr.isr_arg = sc;
    127 	bsc->sc_isr.isr_ipl = 2;
    128 	add_isr(&bsc->sc_isr);
    129 }
    130 
    131 void
    132 bah_zbus_reset(struct bah_softc *sc, int onoff)
    133 {
    134 	struct bah_zbus_softc *bsc;
    135 	volatile u_int8_t *p;
    136 
    137 	bsc = (struct bah_zbus_softc *)sc;
    138 
    139 	p = (volatile u_int8_t *)bsc->sc_bst.base;
    140 
    141 	p[0x0000] = 0;	/* A2060 reset flipflop */
    142 	p[0xc000] = 0;	/* A560 reset flipflop */
    143 
    144 	if (!onoff)
    145 		return;
    146 
    147 #ifdef M68060
    148 	/* make sure we flush the store buffer before the delay */
    149 	(void)p[0x8000];
    150 #endif
    151 	DELAY(200);
    152 
    153 	p[0x0000] = 0xff;
    154 	p[0xc000] = 0xff;
    155 
    156 	return;
    157 }
    158