sys/arch/macppc/dev/if_wi_obio.c

   1 /*      $NetBSD: if_wi_obio.c,v 1.18 2008/09/10 00:33:12 macallan Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2001 Tsubai Masanari.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: if_wi_obio.c,v 1.18 2008/09/10 00:33:12 macallan Exp $");
  31
  32 #include "opt_inet.h"
  33
  34 #include <sys/param.h>
  35 #include <sys/callout.h>
  36 #include <sys/device.h>
  37 #include <sys/socket.h>
  38 #include <sys/systm.h>
  39
  40 #ifdef INET
  41 #include <net/if.h>
  42 #include <net/if_ether.h>
  43 #include <net/if_media.h>
  44 #include <net80211/ieee80211_var.h>
  45 #include <net80211/ieee80211_radiotap.h>
  46 #include <net80211/ieee80211_rssadapt.h>
  47 #endif
  48
  49 #include <machine/autoconf.h>
  50 #include <machine/bus.h>
  51
  52 #include <dev/ic/wi_ieee.h>
  53 #include <dev/ic/wireg.h>
  54 #include <dev/ic/wivar.h>
  55 #include <macppc/dev/obiovar.h>
  56
  57 static int wi_obio_match(struct device *, struct cfdata *, void *);
  58 static void wi_obio_attach(struct device *, struct device *, void *);
  59 static int wi_obio_enable(struct wi_softc *);
  60 static void wi_obio_disable(struct wi_softc *);
  61
  62 struct wi_obio_softc {
  63         struct wi_softc sc_wi;
  64         bus_space_tag_t sc_tag;
  65 };
  66
  67 CFATTACH_DECL(wi_obio, sizeof(struct wi_obio_softc),
  68     wi_obio_match, wi_obio_attach, NULL, NULL);
  69
  70 int
  71 wi_obio_match(struct device *parent, struct cfdata *match, void *aux)
  72 {
  73         struct confargs *ca = aux;
  74
  75         if (ca->ca_nintr < 4 || ca->ca_nreg < 8)
  76                 return 0;
  77
  78         if (strcmp(ca->ca_name, "radio") != 0)
  79                 return 0;
  80
  81         return 1;
  82 }
  83
  84 #define OBIO_WI_FCR2    0x40
  85 #define OBIO_WI_GPIO    0x6a
  86 #define OBIO_WI_EXTINT  0x58
  87
  88 void
  89 wi_obio_attach(struct device *parent, struct device *self, void *aux)
  90 {
  91         struct wi_obio_softc * const sc = (void *)self;
  92         struct wi_softc * const wisc = &sc->sc_wi;
  93         struct confargs * const ca = aux;
  94
  95         aprint_normal(" irq %d:", ca->ca_intr[0]);
  96         intr_establish(ca->ca_intr[0], IST_LEVEL, IPL_NET, wi_intr, sc);
  97
  98         sc->sc_tag = wisc->sc_iot = ca->ca_tag;
  99
 100         if (bus_space_map(wisc->sc_iot, ca->ca_baseaddr + ca->ca_reg[0],
 101             ca->ca_reg[1], 0, &wisc->sc_ioh)) {
 102                 printf(" can't map i/o space\n");
 103                 return;
 104         }
 105
 106         wisc->sc_enabled = 1;
 107         wisc->sc_enable = wi_obio_enable;
 108         wisc->sc_disable = wi_obio_disable;
 109
 110         if (wi_attach(wisc, 0)) {
 111                 printf("%s: failed to attach controller\n", self->dv_xname);
 112                 return;
 113         }
 114
 115         if (!pmf_device_register(self, NULL, NULL))
 116                 aprint_error_dev(self, "couldn't establish power handler\n");
 117         else
 118                 pmf_class_network_register(self, &sc->sc_wi.sc_if);
 119
 120         /* Disable the card. */
 121         wisc->sc_enabled = 0;
 122         wi_obio_disable(wisc);
 123 }
 124
 125 int
 126 wi_obio_enable(struct wi_softc *wisc)
 127 {
 128         uint32_t x;
 129
 130         x = obio_read_4(OBIO_WI_FCR2);
 131         x |= 0x4;
 132         obio_write_4(OBIO_WI_FCR2, x);
 133
 134         /* Enable card slot. */
 135         obio_write_1(OBIO_WI_GPIO + 0x0f, 5);
 136         delay(1000);
 137         obio_write_1(OBIO_WI_GPIO + 0x0f, 4);
 138         delay(1000);
 139         x = obio_read_4(OBIO_WI_FCR2);
 140         x &= ~0x8000000;
 141
 142         obio_write_4(OBIO_WI_FCR2, x);
 143         /* out8(gpio + 0x10, 4); */
 144
 145         obio_write_1(OBIO_WI_EXTINT + 0x0b, 0);
 146         obio_write_1(OBIO_WI_EXTINT + 0x0a, 0x28);
 147         obio_write_1(OBIO_WI_EXTINT + 0x0d, 0x28);
 148         obio_write_1(OBIO_WI_GPIO + 0x0d, 0x28);
 149         obio_write_1(OBIO_WI_GPIO + 0x0e, 0x28);
 150         obio_write_4(0x1c000, 0);
 151
 152         /* Initialize the card. */
 153         obio_write_4(0x1a3e0, 0x41);
 154         x = obio_read_4(OBIO_WI_FCR2);
 155         x |= 0x8000000;
 156         obio_write_4(OBIO_WI_FCR2, x);
 157
 158         return 0;
 159 }
 160
 161 void
 162 wi_obio_disable(struct wi_softc *wisc)
 163 {
 164         uint32_t x;
 165
 166         x = obio_read_4(OBIO_WI_FCR2);
 167         x &= ~0x4;
 168         obio_write_4(OBIO_WI_FCR2, x);
 169         /* out8(gpio + 0x10, 0); */
 170 }