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      1 /*	$NetBSD: isa_machdep.c,v 1.43 2021/08/07 16:18:46 thorpej 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/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.43 2021/08/07 16:18:46 thorpej Exp $");
     36 
     37 #include <sys/types.h>
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/device.h>
     41 
     42 #define _ATARI_BUS_DMA_PRIVATE
     43 #include <sys/bus.h>
     44 #include <dev/isa/isavar.h>
     45 #include <dev/isa/isareg.h>
     46 
     47 #include "pckbc.h"
     48 #if (NPCKBC > 0)
     49 #include <dev/ic/pckbcvar.h>
     50 #include <dev/ic/i8042reg.h>
     51 #endif /* NPCKBC > 0 */
     52 
     53 #include <machine/iomap.h>
     54 #include <machine/mfp.h>
     55 #include <atari/atari/device.h>
     56 
     57 #include "isadma.h"
     58 
     59 #if NISADMA == 0
     60 
     61 /*
     62  * Entry points for ISA DMA while no DMA capable devices are attached.
     63  * This must be a serious error. Cause a panic...
     64  */
     65 struct atari_bus_dma_tag isa_bus_dma_tag = {
     66 	0
     67 };
     68 #endif /* NISADMA == 0 */
     69 
     70 static int	atariisabusprint(void *, const char *);
     71 static int	isabusmatch(device_t, cfdata_t, void *);
     72 static void	isabusattach(device_t, device_t, void *);
     73 
     74 struct isabus_softc {
     75 	device_t sc_dev;
     76 	struct atari_isa_chipset sc_chipset;
     77 };
     78 
     79 CFATTACH_DECL_NEW(isab, sizeof(struct isabus_softc),
     80     isabusmatch, isabusattach, NULL, NULL);
     81 
     82 /*
     83  * We need some static storage to attach a console keyboard on the Milan
     84  * during early console init.
     85  */
     86 static struct atari_bus_space	bs_storage[2];	/* 1 iot, 1 memt */
     87 
     88 int
     89 isabusmatch(device_t parent, cfdata_t cf, void *aux)
     90 {
     91 	static int	nmatched = 0;
     92 
     93 	if (strcmp((char *)aux, "isab"))
     94 		return 0; /* Wrong number... */
     95 
     96 	if (atari_realconfig == 0)
     97 		return 1;
     98 
     99 	if (machineid & (ATARI_HADES|ATARI_MILAN)) {
    100 		/*
    101 		 * The Hades and Milan have only one pci bus
    102 		 */
    103 		if (nmatched)
    104 			return 0;
    105 		nmatched++;
    106 		return 1;
    107 	}
    108 	return 0;
    109 }
    110 
    111 void
    112 isabusattach(device_t parent, device_t self, void *aux)
    113 {
    114 	struct isabus_softc *sc;
    115 	struct isabus_attach_args	iba;
    116 	extern struct atari_bus_dma_tag isa_bus_dma_tag;
    117 	extern void isa_bus_init(void);
    118 
    119 	iba.iba_dmat	= &isa_bus_dma_tag;
    120 	iba.iba_iot     = leb_alloc_bus_space_tag(&bs_storage[0]);
    121 	iba.iba_memt    = leb_alloc_bus_space_tag(&bs_storage[1]);
    122 	if ((iba.iba_iot == NULL) || (iba.iba_memt == NULL)) {
    123 		printf("leb_alloc_bus_space_tag failed!\n");
    124 		return;
    125 	}
    126 	iba.iba_iot->base  = ISA_IOSTART;
    127 	iba.iba_memt->base = ISA_MEMSTART;
    128 
    129 	if (machineid & ATARI_HADES)
    130 	    MFP->mf_aer |= (IO_ISA1|IO_ISA2); /* ISA interrupts: LOW->HIGH */
    131 	isa_bus_init();
    132 	if (self == NULL) { /* Early init */
    133 #if (NPCKBC > 0)
    134 		pckbc_cnattach(iba.iba_iot, IO_KBD, KBCMDP, PCKBC_KBD_SLOT, 0);
    135 #endif
    136 		return;
    137 	}
    138 
    139 	sc = device_private(self);
    140 	sc->sc_dev = self;
    141 	iba.iba_ic = &sc->sc_chipset;
    142 
    143 	printf("\n");
    144 	config_found(self, &iba, atariisabusprint, CFARGS_NONE);
    145 }
    146 
    147 int
    148 atariisabusprint(void *aux, const char *name)
    149 {
    150 
    151 	if (name == NULL)
    152 		return UNCONF;
    153 	return QUIET;
    154 }
    155 
    156 void
    157 isa_attach_hook(device_t parent, device_t self, struct isabus_attach_args *iba)
    158 {
    159 }
    160 
    161 void
    162 isa_detach_hook(isa_chipset_tag_t ic, device_t self)
    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