if_an_pci.c revision 77217
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: head/sys/dev/an/if_an_pci.c 77217 2001-05-26 09:27:08Z phk $ 33 */ 34 35/* 36 * This is a PCI shim for the Aironet PC4500/4800 wireless network 37 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices, 38 * which all have basically the same interface. The ISA and PCI cards 39 * are actually bridge adapters with PCMCIA cards inserted into them, 40 * however they appear as normal PCI or ISA devices to the host. 41 * 42 * All we do here is handle the PCI probe and attach and set up an 43 * interrupt handler entry point. The PCI version of the card uses 44 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with 45 * multiple PCI address space mappings. The primary mapping at PCI 46 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card. 47 * The I/O address of the Aironet is actually at register 0x18, which 48 * is the local bus mapping register for bus space 0. There are also 49 * registers for additional register spaces at registers 0x1C and 50 * 0x20, but these are unused in the Aironet devices. To find out 51 * more, you need a datasheet for the 9050 from PLX, but you have 52 * to go through their sales office to get it. Bleh. 53 */ 54 55#include "opt_inet.h" 56 57#ifdef INET 58#define ANCACHE 59#endif 60 61#include <sys/param.h> 62#include <sys/systm.h> 63#include <sys/sockio.h> 64#include <sys/mbuf.h> 65#include <sys/kernel.h> 66#include <sys/socket.h> 67 68#include <sys/module.h> 69#include <sys/bus.h> 70#include <machine/bus.h> 71#include <sys/rman.h> 72#include <sys/mutex.h> 73#include <machine/resource.h> 74 75#include <net/if.h> 76#include <net/if_arp.h> 77#include <net/ethernet.h> 78#include <net/if_dl.h> 79#include <net/if_media.h> 80 81#include <pci/pcireg.h> 82#include <pci/pcivar.h> 83 84#ifndef lint 85static const char rcsid[] = 86 "$FreeBSD: head/sys/dev/an/if_an_pci.c 77217 2001-05-26 09:27:08Z phk $"; 87#endif 88 89#include <dev/an/if_aironet_ieee.h> 90#include <dev/an/if_anreg.h> 91 92struct an_type { 93 u_int16_t an_vid; 94 u_int16_t an_did; 95 char *an_name; 96}; 97 98#define AIRONET_VENDORID 0x14B9 99#define AIRONET_DEVICEID_4500 0x4500 100#define AIRONET_DEVICEID_4800 0x4800 101#define AIRONET_DEVICEID_4xxx 0x0001 102#define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 103#define AN_PCI_LOIO 0x18 /* Aironet iobase */ 104 105static struct an_type an_devs[] = { 106 { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" }, 107 { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" }, 108 { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" }, 109 { 0, 0, NULL } 110}; 111 112static int an_probe_pci __P((device_t)); 113static int an_attach_pci __P((device_t)); 114static int an_detach_pci __P((device_t)); 115 116static int an_probe_pci(device_t dev) 117{ 118 struct an_type *t; 119 120 t = an_devs; 121 122 while(t->an_name != NULL) { 123 if (pci_get_vendor(dev) == t->an_vid && 124 pci_get_device(dev) == t->an_did) { 125 device_set_desc(dev, t->an_name); 126 return(0); 127 } 128 t++; 129 } 130 131 return(ENXIO); 132} 133 134static int an_attach_pci(dev) 135 device_t dev; 136{ 137 u_int32_t command; 138 struct an_softc *sc; 139 int unit, flags, error = 0; 140 141 sc = device_get_softc(dev); 142 unit = device_get_unit(dev); 143 flags = device_get_flags(dev); 144 bzero(sc, sizeof(struct an_softc)); 145 146 /* 147 * Map control/status registers. 148 */ 149 command = pci_read_config(dev, PCIR_COMMAND, 4); 150 command |= PCIM_CMD_PORTEN; 151 pci_write_config(dev, PCIR_COMMAND, command, 4); 152 command = pci_read_config(dev, PCIR_COMMAND, 4); 153 154 if (!(command & PCIM_CMD_PORTEN)) { 155 printf("an%d: failed to enable I/O ports!\n", unit); 156 error = ENXIO; 157 goto fail; 158 } 159 160 sc->port_rid = AN_PCI_LOIO; 161 error = an_alloc_port(dev, sc->port_rid, 1); 162 163 if (error) { 164 printf("an%d: couldn't map ports\n", unit); 165 goto fail; 166 } 167 168 sc->an_btag = rman_get_bustag(sc->port_res); 169 sc->an_bhandle = rman_get_bushandle(sc->port_res); 170 171 /* Allocate interrupt */ 172 error = an_alloc_irq(dev, 0, RF_SHAREABLE); 173 if (error) { 174 an_release_resources(dev); 175 goto fail; 176 } 177 178 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, 179 an_intr, sc, &sc->irq_handle); 180 if (error) { 181 an_release_resources(dev); 182 goto fail; 183 } 184 185 sc->an_dev = dev; 186 error = an_attach(sc, device_get_unit(dev), flags); 187 188fail: 189 return(error); 190} 191 192static int 193an_detach_pci(device_t dev) 194{ 195 struct an_softc *sc = device_get_softc(dev); 196 struct ifnet *ifp = &sc->arpcom.ac_if; 197 198 an_stop(sc); 199 ifmedia_removeall(&sc->an_ifmedia); 200 ether_ifdetach(ifp, ETHER_BPF_SUPPORTED); 201 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle); 202 an_release_resources(dev); 203 204 return (0); 205} 206 207static device_method_t an_pci_methods[] = { 208 /* Device interface */ 209 DEVMETHOD(device_probe, an_probe_pci), 210 DEVMETHOD(device_attach, an_attach_pci), 211 DEVMETHOD(device_detach, an_detach_pci), 212 DEVMETHOD(device_shutdown, an_shutdown), 213 { 0, 0 } 214}; 215 216static driver_t an_pci_driver = { 217 "an", 218 an_pci_methods, 219 sizeof(struct an_softc), 220}; 221 222static devclass_t an_devclass; 223 224DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0); 225