sys/arch/i386/pnpbios/lm_pnpbios.c

   1 /*      $NetBSD: lm_pnpbios.c,v 1.13 2008/03/05 15:41:31 xtraeme Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Bill Squier.
   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: lm_pnpbios.c,v 1.13 2008/03/05 15:41:31 xtraeme Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/errno.h>
  38 #include <sys/ioctl.h>
  39 #include <sys/syslog.h>
  40 #include <sys/device.h>
  41 #include <sys/proc.h>
  42
  43 #include <machine/bus.h>
  44
  45 #include <dev/isa/isavar.h>
  46 #include <dev/isa/isadmavar.h>
  47
  48 #include <i386/pnpbios/pnpbiosvar.h>
  49
  50 #include <dev/sysmon/sysmonvar.h>
  51
  52 #include <dev/ic/nslm7xvar.h>
  53
  54
  55 int     lm_pnpbios_match(device_t, cfdata_t, void *);
  56 void    lm_pnpbios_attach(device_t, device_t, void *);
  57
  58 int     lm_pnpbios_hints_index(const char *);
  59 uint8_t lm_pnpbios_readreg(struct lm_softc *, int);
  60 void    lm_pnpbios_writereg(struct lm_softc *, int, int);
  61
  62
  63 CFATTACH_DECL_NEW(lm_pnpbios, sizeof(struct lm_softc),
  64     lm_pnpbios_match, lm_pnpbios_attach, NULL, NULL);
  65
  66 /*
  67  * XXX - no known pnpbios ids for lm series chips.
  68  */
  69 struct lm_pnpbios_hint {
  70         char idstr[8];
  71         int io_region_idx_lm7x;
  72 };
  73
  74 /*
  75  * Currently no known valid pnpbios id's - PNP0C02 is
  76  * for reserved motherboard resources, probing it is bad.
  77  */
  78 struct lm_pnpbios_hint lm_pnpbios_hints[] = {
  79         { { 0 }, 0 }
  80 };
  81
  82
  83 int
  84 lm_pnpbios_hints_index(const char *idstr)
  85 {
  86         int idx = 0;
  87
  88         while (lm_pnpbios_hints[idx].idstr[0] != 0) {
  89                 if (!strcmp(lm_pnpbios_hints[idx].idstr, idstr))
  90                         return idx;
  91                 ++idx;
  92         }
  93
  94         return -1;
  95 }
  96
  97 int
  98 lm_pnpbios_match(device_t parent, cfdata_t match, void *aux)
  99 {
 100         struct pnpbiosdev_attach_args *aa = aux;
 101         struct lm_pnpbios_hint *wph;
 102         bus_space_tag_t iot;
 103         bus_space_handle_t ioh;
 104         int rv;
 105
 106         int wphi;
 107
 108         if ((wphi = lm_pnpbios_hints_index(aa->idstr)) == -1)
 109                 return 0;
 110
 111         wph = &lm_pnpbios_hints[wphi];
 112
 113         if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
 114                            &iot, &ioh)) {
 115                 return 0;
 116         }
 117
 118         rv = lm_probe(iot, ioh);
 119
 120         pnpbios_io_unmap(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
 121                          iot, ioh);
 122
 123         return rv;
 124 }
 125
 126 void
 127 lm_pnpbios_attach(device_t parent, device_t self, void *aux)
 128 {
 129         struct lm_softc *sc = device_private(self);
 130         struct pnpbiosdev_attach_args *aa = aux;
 131         struct lm_pnpbios_hint *wph;
 132
 133         wph = &lm_pnpbios_hints[lm_pnpbios_hints_index(aa->idstr)];
 134
 135         if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
 136                            &sc->lm_iot, &sc->lm_ioh)) {
 137                 aprint_error(": can't map i/o space\n");
 138                 return;
 139         }
 140
 141         aprint_naive("\n");
 142         aprint_normal("\n");
 143         pnpbios_print_devres(self, aa);
 144
 145         /* Bus-independent attach */
 146         sc->lm_writereg = lm_pnpbios_writereg;
 147         sc->lm_readreg = lm_pnpbios_readreg;
 148
 149         lm_attach(sc);
 150 }
 151
 152 uint8_t
 153 lm_pnpbios_readreg(struct lm_softc *sc, int reg)
 154 {
 155         bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
 156         return (bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA));
 157 }
 158
 159
 160 void
 161 lm_pnpbios_writereg(struct lm_softc *sc, int reg, int val)
 162 {
 163         bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
 164         bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
 165 }