sys/arch/hpcmips/dev/plumiobus.c

   1 /*      $NetBSD: plumiobus.c,v 1.12 2005/12/11 12:17:33 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   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 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: plumiobus.c,v 1.12 2005/12/11 12:17:33 christos Exp $");
  34
  35 #define PLUMIOBUSDEBUG
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/device.h>
  40 #include <sys/malloc.h>
  41
  42 #include <machine/bus.h>
  43 #include <machine/intr.h>
  44
  45 #include <hpcmips/tx/tx39var.h>
  46 #include <hpcmips/dev/plumvar.h>
  47 #include <hpcmips/dev/plumicuvar.h>
  48 #include <hpcmips/dev/plumpowervar.h>
  49 #include <hpcmips/dev/plumiobusreg.h>
  50 #include <hpcmips/dev/plumiobusvar.h>
  51
  52 #include "locators.h"
  53
  54 #ifdef PLUMIOBUSDEBUG
  55 int     plumiobus_debug = 0;
  56 #define DPRINTF(arg) if (plumiobus_debug) printf arg;
  57 #define DPRINTFN(n, arg) if (plumiobus_debug > (n)) printf arg;
  58 #else
  59 #define DPRINTF(arg)
  60 #define DPRINTFN(n, arg)
  61 #endif
  62
  63 int plumiobus_match(struct device *, struct cfdata *, void *);
  64 void plumiobus_attach(struct device *, struct device *, void *);
  65 int plumiobus_print(void *, const char *);
  66 int plumiobus_search(struct device *, struct cfdata *,
  67                      const int *, void *);
  68
  69 struct plumisa_resource {
  70         int             pr_irq;
  71         bus_space_tag_t pr_iot;
  72         int             pr_enabled;
  73 };
  74
  75 struct plumiobus_softc {
  76         struct  device          sc_dev;
  77         plum_chipset_tag_t      sc_pc;
  78         bus_space_tag_t         sc_regt;
  79         bus_space_handle_t      sc_regh;
  80         bus_space_tag_t         sc_iot;
  81         bus_space_handle_t      sc_ioh;
  82         struct plumisa_resource sc_isa[PLUM_IOBUS_IO5CSMAX];
  83 };
  84
  85 CFATTACH_DECL(plumiobus, sizeof(struct plumiobus_softc),
  86     plumiobus_match, plumiobus_attach, NULL, NULL);
  87
  88 bus_space_tag_t __plumiobus_subregion(bus_space_tag_t, bus_addr_t,
  89     bus_size_t);
  90 #ifdef PLUMIOBUSDEBUG
  91 void plumiobus_dump(struct plumiobus_softc *);
  92 #endif
  93
  94 int
  95 plumiobus_match(struct device *parent, struct cfdata *cf, void *aux)
  96 {
  97
  98         return (1);
  99 }
 100
 101 void
 102 plumiobus_attach(struct device *parent, struct device *self, void *aux)
 103 {
 104         struct plum_attach_args *pa = aux;
 105         struct plumiobus_softc *sc = (void*)self;
 106         struct plumisa_resource *pr;
 107
 108         sc->sc_pc       = pa->pa_pc;
 109         sc->sc_regt     = pa->pa_regt;
 110         sc->sc_iot      = pa->pa_iot;
 111
 112         if (bus_space_map(sc->sc_regt, PLUM_IOBUS_REGBASE,
 113             PLUM_IOBUS_REGSIZE, 0, &sc->sc_regh)) {
 114                 printf(": register map failed.\n");
 115                 return;
 116         }
 117         printf("\n");
 118         plum_power_establish(sc->sc_pc, PLUM_PWR_IO5);
 119
 120         /* Address space <-> IRQ mapping */
 121         pr = &sc->sc_isa[IO5CS0];
 122         pr->pr_irq = PLUM_INT_EXT5IO0;
 123         pr->pr_iot = __plumiobus_subregion(
 124                 sc->sc_iot,
 125                 PLUM_IOBUS_IOBASE + PLUM_IOBUS_IO5CS0BASE,
 126                 PLUM_IOBUS_IO5SIZE);
 127
 128         pr = &sc->sc_isa[IO5CS1];
 129         pr->pr_irq = PLUM_INT_EXT5IO1;
 130         pr->pr_iot = __plumiobus_subregion(
 131                 sc->sc_iot,
 132                 PLUM_IOBUS_IOBASE + PLUM_IOBUS_IO5CS1BASE,
 133                 PLUM_IOBUS_IO5SIZE);
 134
 135         pr = &sc->sc_isa[IO5CS2];
 136         pr->pr_irq = PLUM_INT_EXT5IO2;
 137         pr->pr_iot = __plumiobus_subregion(
 138                 sc->sc_iot,
 139                 PLUM_IOBUS_IOBASE + PLUM_IOBUS_IO5CS2BASE,
 140                 PLUM_IOBUS_IO5SIZE);
 141
 142         pr = &sc->sc_isa[IO5CS3];
 143         pr->pr_irq = PLUM_INT_EXT5IO3;
 144         pr->pr_iot = __plumiobus_subregion(
 145                 sc->sc_iot,
 146                 PLUM_IOBUS_IOBASE + PLUM_IOBUS_IO5CS3BASE,
 147                 PLUM_IOBUS_IO5SIZE);
 148
 149         pr = &sc->sc_isa[IO5CS4];
 150         pr->pr_irq = PLUM_INT_EXT3IO0; /* XXX */
 151         pr->pr_iot = __plumiobus_subregion(
 152                 sc->sc_iot,
 153                 PLUM_IOBUS_IOBASE + PLUM_IOBUS_IO5CS4BASE,
 154                 PLUM_IOBUS_IO5SIZE);
 155
 156
 157         pr = &sc->sc_isa[IO5NCS];
 158         pr->pr_irq = PLUM_INT_EXT3IO1;
 159         pr->pr_iot = __plumiobus_subregion(
 160                 sc->sc_iot,
 161                 PLUM_IOBUS_IOBASE + PLUM_IOBUS_IO5CS5BASE,
 162                 PLUM_IOBUS_IO5SIZE);
 163
 164 #ifdef PLUMIOBUSDEBUG
 165         plumiobus_dump(sc);
 166 #endif
 167
 168         config_search_ia(plumiobus_search, self, "plumiobusif", plumiobus_print);
 169 }
 170
 171 /* XXX something kludge */
 172 bus_space_tag_t
 173 __plumiobus_subregion(bus_space_tag_t t, bus_addr_t ofs, bus_size_t size)
 174 {
 175         struct hpcmips_bus_space *hbs;
 176
 177         if (!(hbs = malloc(sizeof(struct hpcmips_bus_space),
 178             M_DEVBUF, M_NOWAIT))) {
 179                 panic ("__plumiobus_subregion: no memory.");
 180         }
 181         *hbs = *t;
 182         hbs->t_base += ofs;
 183         hbs->t_size = size;
 184
 185         return (hbs);
 186 }
 187
 188 int
 189 plumiobus_search(struct device *parent, struct cfdata *cf,
 190                  const int *ldesc, void *aux)
 191 {
 192         struct plumiobus_softc *sc = (void*)parent;
 193         struct plumiobus_attach_args pba;
 194         int slot;
 195
 196         /* Disallow wildcarded IO5CS slot */
 197         if (cf->cf_loc[PLUMIOBUSIFCF_SLOT] == PLUMIOBUSIFCF_SLOT_DEFAULT) {
 198                 printf("plumiobus_search: wildcarded slot, skipping\n");
 199                 return (0);
 200         }
 201         slot = pba.pba_slot = cf->cf_loc[PLUMIOBUSIFCF_SLOT];
 202
 203         pba.pba_pc      = sc->sc_pc;
 204         pba.pba_iot     = sc->sc_isa[slot].pr_iot;
 205         pba.pba_irq     = sc->sc_isa[slot].pr_irq;
 206         pba.pba_busname = "plumisab";
 207
 208         if (!(sc->sc_isa[slot].pr_enabled) && /* not attached slot */
 209             config_match(parent, cf, &pba)) {
 210                 config_attach(parent, cf, &pba, plumiobus_print);
 211                 sc->sc_isa[slot].pr_enabled = 1;
 212         }
 213
 214         return (0);
 215 }
 216
 217 int
 218 plumiobus_print(void *aux, const char *pnp)
 219 {
 220
 221         return (pnp ? QUIET : UNCONF);
 222 }
 223
 224 #ifdef PLUMIOBUSDEBUG
 225 void
 226 plumiobus_dump(struct plumiobus_softc *sc)
 227 {
 228         bus_space_tag_t regt = sc->sc_regt;
 229         bus_space_handle_t regh = sc->sc_regh;
 230         plumreg_t reg;
 231         int i, wait;
 232
 233         reg = plum_conf_read(regt, regh, PLUM_IOBUS_IOXBSZ_REG);
 234         printf("8bit port:");
 235         for (i = 0; i < 6; i++) {
 236                 if (reg & (1 << i)) {
 237                         printf(" IO5CS%d", i);
 238                 }
 239         }
 240         printf("\n");
 241
 242         reg = PLUM_IOBUS_IOXCCNT_MASK &
 243             plum_conf_read(regt, regh, PLUM_IOBUS_IOXCCNT_REG);
 244         printf(" # of wait to become from the access begining: %d clock\n",
 245             reg + 1);
 246         reg = plum_conf_read(regt, regh, PLUM_IOBUS_IOXACNT_REG);
 247         printf(" # of wait in access clock: ");
 248         for (i = 0; i < 5; i++) {
 249                 wait = (reg >> (i * PLUM_IOBUS_IOXACNT_SHIFT))
 250                     & PLUM_IOBUS_IOXACNT_MASK;
 251                 printf("[CS%d:%d] ", i, wait + 1);
 252         }
 253         printf("\n");
 254
 255         reg = PLUM_IOBUS_IOXSCNT_MASK &
 256             plum_conf_read(regt, regh, PLUM_IOBUS_IOXSCNT_REG);
 257         printf(" # of wait during access by I/O bus : %d clock\n", reg + 1);
 258
 259         reg = plum_conf_read(regt, regh, PLUM_IOBUS_IDEMODE_REG);
 260         if (reg & PLUM_IOBUS_IDEMODE) {
 261                 printf("IO5CS3,4 IDE mode\n");
 262         }
 263 }
 264 #endif /* PLUMIOBUSDEBUG */