sys/arch/hp700/dev/gecko.c

   1 /*      $OpenBSD: gecko.c,v 1.1 2008/04/27 14:39:51 kettenis Exp $      */
   2
   3 /*
   4  * Copyright (c) 2007 Mark Kettenis
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/param.h>
  20 #include <sys/device.h>
  21 #include <sys/kernel.h>
  22 #include <sys/systm.h>
  23
  24 #include <machine/autoconf.h>
  25 #include <machine/bus.h>
  26 #include <machine/cpu.h>
  27 #include <machine/iomod.h>
  28 #include <machine/pdc.h>
  29
  30 #include <hp700/dev/cpudevs.h>
  31
  32 struct gecko_softc {
  33         device_t                sc_dv;
  34
  35         bus_space_tag_t         sc_iot;
  36         bus_space_handle_t      sc_ioh;
  37 };
  38
  39 int     gecko_match(device_t, cfdata_t, void *);
  40 void    gecko_attach(device_t, device_t, void *);
  41 static void gecko_callback(device_t, struct confargs *);
  42
  43 CFATTACH_DECL_NEW(gecko, sizeof(struct gecko_softc), gecko_match,
  44     gecko_attach, NULL, NULL);
  45
  46 int
  47 gecko_match(device_t parent, cfdata_t match, void *aux)
  48 {
  49         struct confargs *ca = aux;
  50
  51         if (ca->ca_type.iodc_type != HPPA_TYPE_BCPORT ||
  52             ca->ca_type.iodc_sv_model != HPPA_BCPORT_PORT)
  53                 return (0);
  54
  55         if (ca->ca_type.iodc_model == 0x50 &&
  56             ca->ca_type.iodc_revision == 0x00)
  57                 return (1);
  58
  59         return (0);
  60 }
  61
  62 void
  63 gecko_attach(device_t parent, device_t self, void *aux)
  64 {
  65         struct gecko_softc *sc = device_private(self);
  66         struct confargs *ca = aux, nca;
  67         volatile struct iomod *regs;
  68
  69         sc->sc_dv = self;
  70         sc->sc_iot = ca->ca_iot;
  71         if (bus_space_map(sc->sc_iot, ca->ca_hpa, IOMOD_HPASIZE, 0,
  72             &sc->sc_ioh)) {
  73                 aprint_error(": can't map IO space\n");
  74                 return;
  75         }
  76         regs = bus_space_vaddr(ca->ca_iot, sc->sc_ioh);
  77
  78         aprint_verbose(": %x-%x", regs->io_io_low, regs->io_io_high);
  79
  80         aprint_normal("\n");
  81
  82         nca = *ca;
  83         nca.ca_hpabase = regs->io_io_low;
  84         nca.ca_nmodules = MAXMODBUS;
  85
  86         pdc_scanbus(self, &nca, gecko_callback);
  87 }
  88
  89 static void
  90 gecko_callback(device_t self, struct confargs *ca)
  91 {
  92
  93         config_found_sm_loc(self, "gedoens", NULL, ca, mbprint, mbsubmatch);
  94 }
  95