sys/arch/atari/isa/isa_machdep.c

   1 /*      $NetBSD: isa_machdep.c,v 1.35 2009/08/19 15:15:21 dyoung 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 1.35 2009/08/19 15:15:21 dyoung 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 <machine/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 *auxp, const char *);
  71 static int      isabusmatch(struct device *, struct cfdata *, void *);
  72 static void     isabusattach(struct device *, struct device *, void *);
  73
  74 struct isabus_softc {
  75         struct device sc_dev;
  76         struct atari_isa_chipset sc_chipset;
  77 };
  78
  79 CFATTACH_DECL(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(struct device *pdp, struct cfdata *cfp, void *auxp)
  90 {
  91         static int      nmatched = 0;
  92
  93         if (strcmp((char *)auxp, "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(struct device *pdp, struct device *dp, void *auxp)
 113 {
 114         struct isabus_softc *sc = (struct isabus_softc *)dp;
 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         iba.iba_ic      = &sc->sc_chipset;
 123         if ((iba.iba_iot == NULL) || (iba.iba_memt == NULL)) {
 124                 printf("leb_alloc_bus_space_tag failed!\n");
 125                 return;
 126         }
 127         iba.iba_iot->base  = ISA_IOSTART;
 128         iba.iba_memt->base = ISA_MEMSTART;
 129
 130         if (machineid & ATARI_HADES)
 131             MFP->mf_aer |= (IO_ISA1|IO_ISA2); /* ISA interrupts: LOW->HIGH */
 132         isa_bus_init();
 133         if (dp == NULL) { /* Early init */
 134 #if (NPCKBC > 0)
 135                 pckbc_cnattach(iba.iba_iot, IO_KBD, KBCMDP, PCKBC_KBD_SLOT);
 136 #endif
 137                 return;
 138         }
 139
 140         printf("\n");
 141         config_found_ia(dp, "isabus", &iba, atariisabusprint);
 142 }
 143
 144 int
 145 atariisabusprint(void *auxp, const char *name)
 146 {
 147         if(name == NULL)
 148                 return(UNCONF);
 149         return(QUIET);
 150 }
 151
 152 void
 153 isa_attach_hook(struct device *parent, struct device *self, struct isabus_attach_args *iba)
 154 {
 155 }
 156
 157 void
 158 isa_detach_hook(isa_chipset_tag_t ic, device_t self)
 159 {
 160 }
 161
 162 const struct evcnt *
 163 isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
 164 {
 165
 166         /* XXX for now, no evcnt parent reported */
 167         return NULL;
 168 }