sys/arch/mips/atheros/dev/if_ath_arbus.c

   1 /* $NetBSD: if_ath_arbus.c,v 1.16 2009/07/06 00:43:23 alc Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2006 Jared D. McNeill <jmcneill@invisible.ca>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *        This product includes software developed by the NetBSD
  18  *        Foundation, Inc. and its contributors.
  19  * 4. Neither the name of The NetBSD Foundation nor the names of its
  20  *    contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: if_ath_arbus.c,v 1.16 2009/07/06 00:43:23 alc Exp $");
  38
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/device.h>
  42 #include <sys/mbuf.h>
  43 #include <sys/malloc.h>
  44 #include <sys/kernel.h>
  45 #include <sys/errno.h>
  46
  47 #include <machine/bus.h>
  48 #include <machine/intr.h>
  49
  50 #include <net/if.h>
  51 #include <net/if_media.h>
  52 #include <net/if_ether.h>
  53 #include <net/if_llc.h>
  54 #include <net/if_arp.h>
  55
  56 #include <netinet/in.h>
  57
  58 #include <net80211/ieee80211_netbsd.h>
  59 #include <net80211/ieee80211_var.h>
  60
  61 #include <mips/atheros/include/ar531xvar.h>
  62 #include <mips/atheros/include/arbusvar.h>
  63
  64 #include <dev/pci/pcidevs.h>
  65 #include <dev/ic/ath_netbsd.h>
  66 #include <dev/ic/athvar.h>
  67
  68 #include <ah.h>
  69 #include <ah_soc.h>     /* XXX really doesn't belong in hal */
  70
  71 struct ath_arbus_softc {
  72         struct ath_softc        sc_ath;
  73         bus_space_tag_t         sc_iot;
  74         bus_space_handle_t      sc_ioh;
  75         void                    *sc_ih;
  76         struct ar531x_config    sc_config;
  77 };
  78
  79 static int      ath_arbus_match(device_t, cfdata_t, void *);
  80 static void     ath_arbus_attach(device_t, device_t, void *);
  81 static int      ath_arbus_detach(device_t, int);
  82
  83 CFATTACH_DECL_NEW(ath_arbus, sizeof(struct ath_arbus_softc),
  84     ath_arbus_match, ath_arbus_attach, ath_arbus_detach, NULL);
  85
  86 static int
  87 ath_arbus_match(device_t parent, cfdata_t cf, void *opaque)
  88 {
  89         struct arbus_attach_args *aa;
  90
  91         aa = (struct arbus_attach_args *)opaque;
  92         if (strcmp(aa->aa_name, "ath") == 0)
  93                 return 1;
  94
  95         return 0;
  96 }
  97
  98 static bool
  99 ath_arbus_resume(device_t dv, pmf_qual_t qual)
 100 {
 101         struct ath_arbus_softc *asc = device_private(dv);
 102         ath_resume(&asc->sc_ath);
 103
 104         return true;
 105 }
 106
 107
 108 static void
 109 ath_arbus_attach(device_t parent, device_t self, void *opaque)
 110 {
 111         struct ath_arbus_softc *asc;
 112         struct ath_softc *sc;
 113         struct arbus_attach_args *aa;
 114         const char *name;
 115         prop_number_t prop;
 116         int rv;
 117         uint16_t devid;
 118
 119         asc = device_private(self);
 120         sc = &asc->sc_ath;
 121         sc->sc_dev = self;
 122         aa = (struct arbus_attach_args *)opaque;
 123
 124         prop = prop_dictionary_get(device_properties(sc->sc_dev),
 125             "wmac-rev");
 126         if (prop == NULL) {
 127                 printf(": unable to get wmac-rev property\n");
 128                 return;
 129         }
 130         KDASSERT(prop_object_type(prop) == PROP_TYPE_NUMBER);
 131
 132         devid = (uint16_t)prop_number_integer_value(prop);
 133         name = ath_hal_probe(PCI_VENDOR_ATHEROS, devid);
 134
 135         printf(": %s\n", name ? name : "Unknown AR531X WLAN");
 136
 137         asc->sc_iot = aa->aa_bst;
 138         rv = bus_space_map(asc->sc_iot, aa->aa_addr, aa->aa_size, 0,
 139             &asc->sc_ioh);
 140         if (rv) {
 141                 aprint_error_dev(self, "unable to map registers\n");
 142                 return;
 143         }
 144         /*
 145          * Setup HAL configuration state for use by the driver.
 146          */
 147         rv = ar531x_board_config(&asc->sc_config);
 148         if (rv) {
 149                 aprint_error_dev(self, "unable to locate board configuration\n");
 150                 return;
 151         }
 152         asc->sc_config.unit = device_unit(sc->sc_dev);
 153         asc->sc_config.tag = asc->sc_iot;
 154
 155         /* NB: the HAL expects the config state passed as the tag */
 156         sc->sc_st = (HAL_BUS_TAG) &asc->sc_config;
 157         sc->sc_sh = (HAL_BUS_HANDLE) asc->sc_ioh;
 158         sc->sc_dmat = aa->aa_dmat;
 159
 160         asc->sc_ih = arbus_intr_establish(aa->aa_cirq, aa->aa_mirq, ath_intr,
 161             sc);
 162         if (asc->sc_ih == NULL) {
 163                 aprint_error_dev(self, "couldn't establish interrupt\n");
 164                 return;
 165         }
 166
 167         ATH_LOCK_INIT(sc);
 168
 169         if (!pmf_device_register(self, NULL, ath_arbus_resume))
 170                 aprint_error_dev(self, "couldn't establish power handler\n");
 171         else
 172                 pmf_class_network_register(self, &sc->sc_if);
 173
 174         if (ath_attach(devid, sc) != 0) {
 175                 aprint_error_dev(self, "ath_attach failed\n");
 176                 goto err;
 177         }
 178
 179         return;
 180
 181 err:
 182         arbus_intr_disestablish(asc->sc_ih);
 183 }
 184
 185 static int
 186 ath_arbus_detach(device_t self, int flags)
 187 {
 188         struct ath_arbus_softc *asc = device_private(self);
 189
 190         ath_detach(&asc->sc_ath);
 191         arbus_intr_disestablish(asc->sc_ih);
 192
 193         return (0);
 194 }