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isa_machdep.c revision 1.23 
      1 /*	$NetBSD: isa_machdep.c,v 1.23 2001/05/14 13:18:47 leo Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Leo Weppelman.  All rights reserved.
      5  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
      6  * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Charles M. Hannum.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/types.h>
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 
     39 #define _ATARI_BUS_DMA_PRIVATE
     40 #include <machine/bus.h>
     41 #include <dev/isa/isavar.h>
     42 #include <dev/isa/isareg.h>
     43 
     44 #include "pckbc.h"
     45 #if (NPCKBC > 0)
     46 #include <dev/ic/pckbcvar.h>
     47 #include <dev/isa/isareg.h>
     48 #include <dev/ic/i8042reg.h>
     49 #endif /* NPCKBC > 0 */
     50 
     51 #include <machine/iomap.h>
     52 #include <machine/mfp.h>
     53 #include <atari/atari/device.h>
     54 
     55 #include "isadma.h"
     56 
     57 #if NISADMA == 0
     58 
     59 /*
     60  * Entry points for ISA DMA while no DMA capable devices are attached.
     61  * This must be a serious error. Cause a panic...
     62  */
     63 struct atari_bus_dma_tag isa_bus_dma_tag = {
     64 	0
     65 };
     66 #endif /* NISADMA == 0 */
     67 
     68 static int	isabusprint __P((void *auxp, const char *));
     69 static int	isabusmatch __P((struct device *, struct cfdata *, void *));
     70 static void	isabusattach __P((struct device *, struct device *, void *));
     71 
     72 struct isabus_softc {
     73 	struct device sc_dev;
     74 	struct atari_isa_chipset sc_chipset;
     75 };
     76 
     77 struct cfattach isabus_ca = {
     78 	sizeof(struct isabus_softc), isabusmatch, isabusattach
     79 };
     80 
     81 /*
     82  * We need some static storage to attach a console keyboard on the Milan
     83  * during early console init.
     84  */
     85 static struct atari_bus_space	bs_storage[2];	/* 1 iot, 1 memt */
     86 
     87 int
     88 isabusmatch(pdp, cfp, auxp)
     89 struct device	*pdp;
     90 struct cfdata	*cfp;
     91 void		*auxp;
     92 {
     93 	static int	nmatched = 0;
     94 
     95 	if (strcmp((char *)auxp, "isabus"))
     96 		return (0); /* Wrong number... */
     97 
     98 	if(atari_realconfig == 0)
     99 		return (1);
    100 
    101 	if (machineid & (ATARI_HADES|ATARI_MILAN)) {
    102 		/*
    103 		 * The Hades and Milan have only one pci bus
    104 		 */
    105 		if (nmatched)
    106 			return (0);
    107 		nmatched++;
    108 		return (1);
    109 	}
    110 	return(0);
    111 }
    112 
    113 void
    114 isabusattach(pdp, dp, auxp)
    115 struct device	*pdp, *dp;
    116 void		*auxp;
    117 {
    118 	struct isabus_softc *sc = (struct isabus_softc *)dp;
    119 	struct isabus_attach_args	iba;
    120 	extern struct atari_bus_dma_tag isa_bus_dma_tag;
    121 	extern void isa_bus_init(void);
    122 
    123 	iba.iba_busname = "isa";
    124 	iba.iba_dmat	= &isa_bus_dma_tag;
    125 	iba.iba_iot     = leb_alloc_bus_space_tag(&bs_storage[0]);
    126 	iba.iba_memt    = leb_alloc_bus_space_tag(&bs_storage[1]);
    127 	iba.iba_ic	= &sc->sc_chipset;
    128 	if ((iba.iba_iot == NULL) || (iba.iba_memt == NULL)) {
    129 		printf("leb_alloc_bus_space_tag failed!\n");
    130 		return;
    131 	}
    132 	iba.iba_iot->base  = ISA_IOSTART;
    133 	iba.iba_memt->base = ISA_MEMSTART;
    134 
    135 	if (machineid & ATARI_HADES)
    136 	    MFP->mf_aer |= (IO_ISA1|IO_ISA2); /* ISA interrupts: LOW->HIGH */
    137 	isa_bus_init();
    138 	if (dp == NULL) { /* Early init */
    139 #if (NPCKBC > 0)
    140 		pckbc_cnattach(iba.iba_iot, IO_KBD, KBCMDP, PCKBC_KBD_SLOT);
    141 #endif
    142 		return;
    143 	}
    144 
    145 	printf("\n");
    146 	config_found(dp, &iba, isabusprint);
    147 }
    148 
    149 int
    150 isabusprint(auxp, name)
    151 void		*auxp;
    152 const char	*name;
    153 {
    154 	if(name == NULL)
    155 		return(UNCONF);
    156 	return(QUIET);
    157 }
    158 
    159 void
    160 isa_attach_hook(parent, self, iba)
    161 	struct device		  *parent, *self;
    162 	struct isabus_attach_args *iba;
    163 {
    164 }
    165 
    166 const struct evcnt *
    167 isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
    168 {
    169 
    170 	/* XXX for now, no evcnt parent reported */
    171 	return NULL;
    172 }
    173