sys/dev/pcmcia/if_awi_pcmcia.c

   1 /* $NetBSD: if_awi_pcmcia.c,v 1.43 2009/05/12 14:42:18 cegger Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999, 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Bill Sommerfeld
   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 /*
  33  * PCMCIA attachment for BayStack 650 802.11FH PCMCIA card,
  34  * based on the AMD 79c930 802.11 controller chip.
  35  *
  36  * This attachment can probably be trivially adapted for other FH and
  37  * DS cards based on the same chipset.
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __KERNEL_RCSID(0, "$NetBSD: if_awi_pcmcia.c,v 1.43 2009/05/12 14:42:18 cegger Exp $");
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/mbuf.h>
  46 #include <sys/socket.h>
  47 #include <sys/ioctl.h>
  48 #include <sys/errno.h>
  49 #include <sys/syslog.h>
  50 #include <sys/select.h>
  51 #include <sys/device.h>
  52
  53 #include <net/if.h>
  54 #include <net/if_dl.h>
  55 #include <net/if_ether.h>
  56 #include <net/if_media.h>
  57
  58 #include <net80211/ieee80211_netbsd.h>
  59 #include <net80211/ieee80211_var.h>
  60
  61 #include <sys/cpu.h>
  62 #include <sys/bus.h>
  63 #include <sys/intr.h>
  64
  65 #include <dev/ic/am79c930reg.h>
  66 #include <dev/ic/am79c930var.h>
  67 #include <dev/ic/awireg.h>
  68 #include <dev/ic/awivar.h>
  69
  70 #include <dev/pcmcia/pcmciareg.h>
  71 #include <dev/pcmcia/pcmciavar.h>
  72 #include <dev/pcmcia/pcmciadevs.h>
  73
  74 static int awi_pcmcia_match(device_t, cfdata_t, void *);
  75 static int awi_pcmcia_validate_config(struct pcmcia_config_entry *);
  76 static void awi_pcmcia_attach(device_t, device_t, void *);
  77 static int awi_pcmcia_detach(device_t, int);
  78 static int awi_pcmcia_enable(struct awi_softc *);
  79 static void awi_pcmcia_disable(struct awi_softc *);
  80
  81 struct awi_pcmcia_softc {
  82         struct awi_softc sc_awi;                /* real "awi" softc */
  83
  84         /* PCMCIA-specific goo */
  85         struct pcmcia_function *sc_pf;          /* our PCMCIA function */
  86         void *sc_ih;                            /* interrupt handler */
  87
  88         int sc_state;
  89 #define AWI_PCMCIA_ATTACHED     3
  90 };
  91
  92 CFATTACH_DECL(awi_pcmcia, sizeof(struct awi_pcmcia_softc),
  93     awi_pcmcia_match, awi_pcmcia_attach, awi_pcmcia_detach, awi_activate);
  94
  95 static const struct pcmcia_product awi_pcmcia_products[] = {
  96         { PCMCIA_VENDOR_BAY,            PCMCIA_PRODUCT_BAY_STACK_650,
  97           PCMCIA_CIS_BAY_STACK_650 },
  98
  99         { PCMCIA_VENDOR_BAY,            PCMCIA_PRODUCT_BAY_STACK_660,
 100           PCMCIA_CIS_BAY_STACK_660 },
 101
 102         { PCMCIA_VENDOR_BAY,            PCMCIA_PRODUCT_BAY_SURFER_PRO,
 103           PCMCIA_CIS_BAY_SURFER_PRO },
 104
 105         { PCMCIA_VENDOR_AMD,            PCMCIA_PRODUCT_AMD_AM79C930,
 106           PCMCIA_CIS_AMD_AM79C930 },
 107
 108         { PCMCIA_VENDOR_ICOM,           PCMCIA_PRODUCT_ICOM_SL200,
 109           PCMCIA_CIS_ICOM_SL200 },
 110
 111         { PCMCIA_VENDOR_NOKIA,          PCMCIA_PRODUCT_NOKIA_C020_WLAN,
 112           PCMCIA_CIS_NOKIA_C020_WLAN },
 113
 114         { PCMCIA_VENDOR_FARALLON,       PCMCIA_PRODUCT_FARALLON_SKYLINE,
 115           PCMCIA_CIS_FARALLON_SKYLINE },
 116 };
 117 static const size_t awi_pcmcia_nproducts =
 118     sizeof(awi_pcmcia_products) / sizeof(awi_pcmcia_products[0]);
 119
 120 static int
 121 awi_pcmcia_enable(struct awi_softc *sc)
 122 {
 123         struct awi_pcmcia_softc *psc = (struct awi_pcmcia_softc *)sc;
 124         struct pcmcia_function *pf = psc->sc_pf;
 125         int error;
 126
 127         /* establish the interrupt. */
 128         psc->sc_ih = pcmcia_intr_establish(pf, IPL_NET, awi_intr, sc);
 129         if (!psc->sc_ih)
 130                 return (EIO);
 131
 132         error = pcmcia_function_enable(pf);
 133         if (error) {
 134                 pcmcia_intr_disestablish(pf, psc->sc_ih);
 135                 psc->sc_ih = 0;
 136         }
 137
 138         return (error);
 139 }
 140
 141 static void
 142 awi_pcmcia_disable(struct awi_softc *sc)
 143 {
 144         struct awi_pcmcia_softc *psc = (struct awi_pcmcia_softc *)sc;
 145         struct pcmcia_function *pf = psc->sc_pf;
 146
 147         pcmcia_function_disable(pf);
 148         pcmcia_intr_disestablish(pf, psc->sc_ih);
 149         psc->sc_ih = 0;
 150 }
 151
 152 static int
 153 awi_pcmcia_match(device_t parent, cfdata_t match,
 154     void *aux)
 155 {
 156         struct pcmcia_attach_args *pa = aux;
 157
 158         if (pcmcia_product_lookup(pa, awi_pcmcia_products, awi_pcmcia_nproducts,
 159             sizeof(awi_pcmcia_products[0]), NULL))
 160                 return (1);
 161         return (0);
 162 }
 163
 164 static int
 165 awi_pcmcia_validate_config(struct pcmcia_config_entry *cfe)
 166 {
 167         if (cfe->iftype != PCMCIA_IFTYPE_IO ||
 168             cfe->num_iospace < 1 ||
 169             cfe->iospace[0].length < AM79C930_IO_SIZE)
 170                 return (EINVAL);
 171         if (cfe->num_memspace < 1) {
 172                 cfe->memspace[0].length = AM79C930_MEM_SIZE;
 173                 cfe->memspace[0].cardaddr = 0;
 174                 cfe->memspace[0].hostaddr = 0;
 175         } else if (cfe->memspace[0].length < AM79C930_MEM_SIZE)
 176                 return (EINVAL);
 177         return (0);
 178 }
 179
 180 static void
 181 awi_pcmcia_attach(device_t parent, device_t self,
 182     void *aux)
 183 {
 184         struct awi_pcmcia_softc *psc = device_private(self);
 185         struct awi_softc *sc = &psc->sc_awi;
 186         struct pcmcia_attach_args *pa = aux;
 187         struct pcmcia_config_entry *cfe;
 188         int error;
 189
 190         psc->sc_pf = pa->pf;
 191
 192         error = pcmcia_function_configure(pa->pf, awi_pcmcia_validate_config);
 193         if (error) {
 194                 aprint_error_dev(self, "configure failed, error=%d\n",
 195                     error);
 196                 return;
 197         }
 198
 199         cfe = pa->pf->cfe;
 200         sc->sc_chip.sc_bustype = AM79C930_BUS_PCMCIA;
 201         sc->sc_chip.sc_iot = cfe->iospace[0].handle.iot;
 202         sc->sc_chip.sc_ioh = cfe->iospace[0].handle.ioh;
 203         if (cfe->num_memspace > 0) {
 204                 sc->sc_chip.sc_memt = cfe->memspace[0].handle.memt;
 205                 sc->sc_chip.sc_memh = cfe->memspace[0].handle.memh;
 206                 am79c930_chip_init(&sc->sc_chip, 1);
 207         } else
 208                 am79c930_chip_init(&sc->sc_chip, 0);
 209
 210         error = awi_pcmcia_enable(sc);
 211         if (error)
 212                 goto fail;
 213         sc->sc_enabled = 1;
 214
 215         awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN);
 216         if (memcmp(sc->sc_banner, "PCnetMobile:", 12))
 217                 goto fail2;
 218
 219         sc->sc_enable = awi_pcmcia_enable;
 220         sc->sc_disable = awi_pcmcia_disable;
 221
 222         sc->sc_cansleep = 1;
 223
 224         if (awi_attach(sc) != 0) {
 225                 aprint_error_dev(self, "failed to attach controller\n");
 226                 goto fail2;
 227         }
 228
 229         sc->sc_enabled = 0;
 230         awi_pcmcia_disable(sc);
 231         psc->sc_state = AWI_PCMCIA_ATTACHED;
 232         return;
 233
 234 fail2:
 235         sc->sc_enabled = 0;
 236         awi_pcmcia_disable(sc);
 237 fail:
 238         pcmcia_function_unconfigure(pa->pf);
 239 }
 240
 241 static int
 242 awi_pcmcia_detach(device_t self, int flags)
 243 {
 244         struct awi_pcmcia_softc *psc = device_private(self);
 245         int error;
 246
 247         if (psc->sc_state != AWI_PCMCIA_ATTACHED)
 248                 return (0);
 249
 250         error = awi_detach(&psc->sc_awi);
 251         if (error)
 252                 return (error);
 253
 254         pcmcia_function_unconfigure(psc->sc_pf);
 255
 256         return (0);
 257 }