sys/arch/hp700/gsc/gscbus.c

   1 /*      $NetBSD: gscbus.c,v 1.18 2009/11/03 05:07:25 snj Exp $  */
   2
   3 /*      $OpenBSD: gscbus.c,v 1.13 2001/08/01 20:32:04 miod Exp $        */
   4
   5 /*
   6  * Copyright (c) 1998 Michael Shalayeff
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 /*
  32  * Sample IO layouts:
  33  * 712:
  34  *
  35  * f0100000 -- lasi0
  36  * f0102000 -- lpt0
  37  * f0104000 -- audio0
  38  * f0105000 -- com0
  39  * f0106000 -- siop0
  40  * f0107000 -- ie0
  41  * f0108000 -- kbd0
  42  * f0108100 -- pms0
  43  * f010a000 -- fdc0
  44  * f010c000 -- *lasi0
  45  * f0200000 -- wax0
  46  * f8000000 -- sti0
  47  * fffbe000 -- cpu0
  48  * fffbf000 -- mem0
  49  *
  50  * 725/50:
  51  *
  52  * f0820000 -- dma
  53  * f0821000 -- hil
  54  * f0822000 -- com1
  55  * f0823000 -- com0
  56  * f0824000 -- lpt0
  57  * f0825000 -- siop0
  58  * f0826000 -- ie0
  59  * f0827000 -- dma reset
  60  * f0828000 -- timers
  61  * f0829000 -- domain kbd
  62  * f082f000 -- asp0
  63  * f1000000 -- audio0
  64  * fc000000 -- eisa0
  65  * fffbe000 -- cpu0
  66  * fffbf000 -- mem0
  67  *
  68  */
  69
  70 #include <sys/cdefs.h>
  71 __KERNEL_RCSID(0, "$NetBSD: gscbus.c,v 1.18 2009/11/03 05:07:25 snj Exp $");
  72
  73 #define GSCDEBUG
  74
  75 #include "opt_kgdb.h"
  76
  77 #include <sys/param.h>
  78 #include <sys/systm.h>
  79 #include <sys/device.h>
  80 #include <sys/malloc.h>
  81 #include <sys/mbuf.h>
  82 #include <sys/reboot.h>
  83
  84 #include <machine/iomod.h>
  85 #include <machine/autoconf.h>
  86 #include <machine/cpufunc.h>
  87
  88 #include <hp700/gsc/gscbusvar.h>
  89 #include <hp700/hp700/machdep.h>
  90
  91 int     gscmatch(device_t, cfdata_t, void *);
  92 void    gscattach(device_t, device_t, void *);
  93
  94 struct gsc_softc {
  95         device_t sc_dev;
  96         struct gsc_attach_args sc_ga;
  97         void *sc_ih;
  98 };
  99
 100 CFATTACH_DECL_NEW(gsc, sizeof(struct gsc_softc),
 101     gscmatch, gscattach, NULL, NULL);
 102
 103 /*
 104  * pdc_scanbus calls this function back with each module
 105  * it finds on the GSC bus.  We call the IC-specific function
 106  * to fix up the module's attach arguments, then we match
 107  * and attach it.
 108  */
 109 static void gsc_module_callback(device_t, struct confargs *);
 110 static void
 111 gsc_module_callback(device_t self, struct confargs *ca)
 112 {
 113         struct gsc_softc *sc = device_private(self);
 114         struct gsc_attach_args ga;
 115
 116         /* Make the GSC attach args. */
 117         ga = sc->sc_ga;
 118         ga.ga_ca = *ca;
 119         ga.ga_iot = sc->sc_ga.ga_iot;
 120         ga.ga_dmatag = sc->sc_ga.ga_dmatag;
 121         (*sc->sc_ga.ga_fix_args)(sc->sc_ga.ga_fix_args_cookie, &ga);
 122
 123         config_found_sm_loc(self, "gsc", NULL, &ga, mbprint, mbsubmatch);
 124 }
 125
 126 int
 127 gscmatch(device_t parent, cfdata_t cf, void *aux)
 128 {
 129         struct gsc_attach_args *ga = aux;
 130
 131         return !strcmp(ga->ga_name, "gsc");
 132 }
 133
 134 void
 135 gscattach(device_t parent, device_t self, void *aux)
 136 {
 137         struct gsc_softc *sc = device_private(self);
 138         struct gsc_attach_args *ga = aux;
 139
 140         sc->sc_dev = self;
 141         sc->sc_ga = *ga;
 142
 143 #ifdef USELEDS
 144         if (machine_ledaddr)
 145                 aprint_normal(": %sleds", machine_ledword? "word" : "");
 146 #endif
 147
 148         aprint_normal("\n");
 149
 150         /* Add the I/O subsystem's interrupt register. */
 151         ga->ga_int_reg->int_reg_dev = device_xname(parent);
 152         sc->sc_ih = hp700_intr_establish(sc->sc_dev, IPL_NONE, NULL,
 153             ga->ga_int_reg, &int_reg_cpu, ga->ga_irq);
 154
 155         ga->ga_ca.ca_nmodules = MAXMODBUS;
 156         ga->ga_ca.ca_hpabase = 0;
 157         pdc_scanbus(self, &ga->ga_ca, gsc_module_callback);
 158 }
 159
 160 int
 161 gscprint(void *aux, const char *pnp)
 162 {
 163
 164         return (UNCONF);
 165 }