sys/dev/netif/an/if_an_pci.c

   1 /*
   2  * Copyright (c) 1997, 1998, 1999
   3  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Bill Paul.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  30  * THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/sys/dev/an/if_an_pci.c,v 1.2.2.8 2003/02/11 03:32:48 ambrisko Exp $
  33  * $DragonFly: src/sys/dev/netif/an/if_an_pci.c,v 1.20 2006/10/25 20:55:55 dillon Exp $
  34  */
  35
  36 /*
  37  * This is a PCI shim for the Aironet PC4500/4800 wireless network
  38  * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
  39  * which all have basically the same interface. The ISA and PCI cards
  40  * are actually bridge adapters with PCMCIA cards inserted into them,
  41  * however they appear as normal PCI or ISA devices to the host.
  42  *
  43  * All we do here is handle the PCI probe and attach and set up an
  44  * interrupt handler entry point. The PCI version of the card uses
  45  * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
  46  * multiple PCI address space mappings. The primary mapping at PCI
  47  * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
  48  * The I/O address of the Aironet is actually at register 0x18, which
  49  * is the local bus mapping register for bus space 0. There are also
  50  * registers for additional register spaces at registers 0x1C and
  51  * 0x20, but these are unused in the Aironet devices. To find out
  52  * more, you need a datasheet for the 9050 from PLX, but you have
  53  * to go through their sales office to get it. Bleh.
  54  */
  55
  56 #include "opt_inet.h"
  57
  58 #ifdef INET
  59 #define ANCACHE
  60 #endif
  61
  62 #include <sys/param.h>
  63 #include <sys/systm.h>
  64 #include <sys/sockio.h>
  65 #include <sys/mbuf.h>
  66 #include <sys/malloc.h>
  67 #include <sys/kernel.h>
  68 #include <sys/socket.h>
  69
  70 #include <sys/module.h>
  71 #include <sys/bus.h>
  72 #include <sys/rman.h>
  73
  74 #include <net/if.h>
  75 #include <net/if_arp.h>
  76 #include <net/ethernet.h>
  77 #include <net/if_dl.h>
  78 #include <net/if_media.h>
  79
  80 #include <bus/pci/pcidevs.h>
  81 #include <bus/pci/pcireg.h>
  82 #include <bus/pci/pcivar.h>
  83
  84 #include "if_aironet_ieee.h"
  85 #include "if_anreg.h"
  86
  87 struct an_type {
  88         uint16_t                 an_vid;
  89         uint16_t                 an_did;
  90         int                      an_port_rid;
  91         const char              *an_name;
  92 };
  93
  94 static const struct an_type an_devs[] = {
  95         { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_350,
  96           PCIR_BAR(2), "Cisco Aironet 350 Series" },
  97         { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4500,
  98           PCIR_BAR(2), "Aironet PCI4500" },
  99         { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4800,
 100           PCIR_BAR(2), "Aironet PCI4800" },
 101         { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4xxx,
 102           PCIR_BAR(2), "Aironet PCI4500/PCI4800" },
 103         { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_MPI350,
 104           PCIR_BAR(0), "Cisco Aironet MPI350" },
 105         { 0, 0, 0, NULL }
 106 };
 107
 108 static int an_probe_pci         (device_t);
 109 static int an_attach_pci        (device_t);
 110 static int an_suspend_pci       (device_t);
 111 static int an_resume_pci        (device_t);
 112
 113 static int
 114 an_probe_pci(device_t dev)
 115 {
 116         const struct an_type *t;
 117         uint16_t vid, did;
 118
 119         vid = pci_get_vendor(dev);
 120         did = pci_get_device(dev);
 121         for (t = an_devs; t->an_name != NULL; ++t) {
 122                 if (vid == t->an_vid && did == t->an_did) {
 123                         struct an_softc *sc;
 124
 125                         sc = device_get_softc(dev);
 126                         sc->port_rid = t->an_port_rid;
 127                         if (vid == PCI_VENDOR_AIRONET &&
 128                             did == PCI_PRODUCT_AIRONET_MPI350)
 129                                 sc->mpi350 = 1;
 130
 131                         device_set_desc(dev, t->an_name);
 132                         return(0);
 133                 }
 134         }
 135         return(ENXIO);
 136 }
 137
 138 static int
 139 an_attach_pci(device_t dev)
 140 {
 141         struct an_softc         *sc;
 142         int                     flags, error;
 143
 144         sc = device_get_softc(dev);
 145         flags = device_get_flags(dev);
 146
 147         error = an_alloc_port(dev, sc->port_rid, 1);
 148         if (error) {
 149                 device_printf(dev, "couldn't map ports\n");
 150                 goto fail;
 151         }
 152
 153         sc->an_btag = rman_get_bustag(sc->port_res);
 154         sc->an_bhandle = rman_get_bushandle(sc->port_res);
 155
 156         /* Allocate memory for MPI350 */
 157         if (sc->mpi350) {
 158                 /* Allocate memory */
 159                 sc->mem_rid = PCIR_MAPS + 4;
 160                 error = an_alloc_memory(dev, sc->mem_rid, 1);
 161                 if (error) {
 162                         device_printf(dev, "couldn't map memory\n");
 163                         goto fail;
 164                 }
 165                 sc->an_mem_btag = rman_get_bustag(sc->mem_res);
 166                 sc->an_mem_bhandle = rman_get_bushandle(sc->mem_res);
 167
 168                 /* Allocate aux. memory */
 169                 sc->mem_aux_rid = PCIR_MAPS + 8;
 170                 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
 171                     AN_AUXMEMSIZE);
 172                 if (error) {
 173                         device_printf(dev, "couldn't map aux memory\n");
 174                         goto fail;
 175                 }
 176                 sc->an_mem_aux_btag = rman_get_bustag(sc->mem_aux_res);
 177                 sc->an_mem_aux_bhandle = rman_get_bushandle(sc->mem_aux_res);
 178
 179                 /* Allocate DMA region */
 180                 error = bus_dma_tag_create(NULL,        /* parent */
 181                                1, 0,                    /* alignment, bounds */
 182                                BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
 183                                BUS_SPACE_MAXADDR,       /* highaddr */
 184                                NULL, NULL,              /* filter, filterarg */
 185                                0x3ffff,                 /* maxsize XXX */
 186                                1,                       /* nsegments */
 187                                0xffff,                  /* maxsegsize XXX */
 188                                BUS_DMA_ALLOCNOW,        /* flags */
 189                                &sc->an_dtag);
 190                 if (error) {
 191                         device_printf(dev, "couldn't get DMA region\n");
 192                         goto fail;
 193                 }
 194         }
 195
 196         /* Allocate interrupt */
 197         error = an_alloc_irq(dev, 0, RF_SHAREABLE);
 198         if (error)
 199                 goto fail;
 200
 201         error = an_attach(sc, dev, flags);
 202         if (error)
 203                 goto fail;
 204
 205         error = bus_setup_intr(dev, sc->irq_res, INTR_NETSAFE,
 206                                an_intr, sc, &sc->irq_handle,
 207                                sc->arpcom.ac_if.if_serializer);
 208         if (error) {
 209                 ifmedia_removeall(&sc->an_ifmedia);
 210                 ether_ifdetach(&sc->arpcom.ac_if);
 211                 goto fail;
 212         }
 213
 214         return(0);
 215
 216 fail:
 217         an_release_resources(dev);
 218         return(error);
 219 }
 220
 221 static int
 222 an_suspend_pci(device_t dev)
 223 {
 224         an_shutdown(dev);
 225
 226         return (0);
 227 }
 228
 229 static int
 230 an_resume_pci(device_t dev)
 231 {
 232         an_resume(dev);
 233
 234         return (0);
 235 }
 236
 237 static device_method_t an_pci_methods[] = {
 238         /* Device interface */
 239         DEVMETHOD(device_probe,         an_probe_pci),
 240         DEVMETHOD(device_attach,        an_attach_pci),
 241         DEVMETHOD(device_detach,        an_detach),
 242         DEVMETHOD(device_shutdown,      an_shutdown),
 243         DEVMETHOD(device_suspend,       an_suspend_pci),
 244         DEVMETHOD(device_resume,        an_resume_pci),
 245         { 0, 0 }
 246 };
 247
 248 static driver_t an_pci_driver = {
 249         "an",
 250         an_pci_methods,
 251         sizeof(struct an_softc),
 252 };
 253
 254 static devclass_t an_devclass;
 255
 256 DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0);