if_an_pci.c revision 67096
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 67096 2000-10-13 22:04:20Z wpaul $ 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 <machine/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 80#include <pci/pcireg.h> 81#include <pci/pcivar.h> 82 83#ifndef lint 84static const char rcsid[] = 85 "$FreeBSD: head/sys/dev/an/if_an_pci.c 67096 2000-10-13 22:04:20Z wpaul $"; 86#endif 87 88#include <dev/an/if_aironet_ieee.h> 89#include <dev/an/if_anreg.h> 90 91struct an_type { 92 u_int16_t an_vid; 93 u_int16_t an_did; 94 char *an_name; 95}; 96 97#define AIRONET_VENDORID 0x14B9 98#define AIRONET_DEVICEID_4500 0x4500 99#define AIRONET_DEVICEID_4800 0x4800 100#define AIRONET_DEVICEID_4xxx 0x0001 101#define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 102#define AN_PCI_LOIO 0x18 /* Aironet iobase */ 103 104static struct an_type an_devs[] = { 105 { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" }, 106 { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" }, 107 { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" }, 108 { 0, 0, NULL } 109}; 110 111static int an_probe_pci __P((device_t)); 112static int an_attach_pci __P((device_t)); 113static int an_detach_pci __P((device_t)); 114 115static int an_probe_pci(device_t dev) 116{ 117 struct an_type *t; 118 119 t = an_devs; 120 121 while(t->an_name != NULL) { 122 if (pci_get_vendor(dev) == t->an_vid && 123 pci_get_device(dev) == t->an_did) { 124 device_set_desc(dev, t->an_name); 125 return(0); 126 } 127 t++; 128 } 129 130 return(ENXIO); 131} 132 133static int an_attach_pci(dev) 134 device_t dev; 135{ 136 u_int32_t command; 137 struct an_softc *sc; 138 int unit, flags, error = 0; 139 140 sc = device_get_softc(dev); 141 unit = device_get_unit(dev); 142 flags = device_get_flags(dev); 143 bzero(sc, sizeof(struct an_softc)); 144 145 /* 146 * Map control/status registers. 147 */ 148 command = pci_read_config(dev, PCIR_COMMAND, 4); 149 command |= PCIM_CMD_PORTEN; 150 pci_write_config(dev, PCIR_COMMAND, command, 4); 151 command = pci_read_config(dev, PCIR_COMMAND, 4); 152 153 if (!(command & PCIM_CMD_PORTEN)) { 154 printf("an%d: failed to enable I/O ports!\n", unit); 155 error = ENXIO; 156 goto fail; 157 } 158 159 sc->port_rid = AN_PCI_LOIO; 160 error = an_alloc_port(dev, sc->port_rid, 1); 161 162 if (error) { 163 printf("an%d: couldn't map ports\n", unit); 164 goto fail; 165 } 166 167 sc->an_btag = rman_get_bustag(sc->port_res); 168 sc->an_bhandle = rman_get_bushandle(sc->port_res); 169 170 /* Allocate interrupt */ 171 error = an_alloc_irq(dev, 0, RF_SHAREABLE); 172 if (error) { 173 an_release_resources(dev); 174 goto fail; 175 } 176 177 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, 178 an_intr, sc, &sc->irq_handle); 179 if (error) { 180 an_release_resources(dev); 181 goto fail; 182 } 183 184 sc->an_dev = dev; 185 error = an_attach(sc, device_get_unit(dev), flags); 186 187fail: 188 return(error); 189} 190 191static int 192an_detach_pci(device_t dev) 193{ 194 struct an_softc *sc = device_get_softc(dev); 195 struct ifnet *ifp = &sc->arpcom.ac_if; 196 197 an_stop(sc); 198 ether_ifdetach(ifp, ETHER_BPF_SUPPORTED); 199 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle); 200 an_release_resources(dev); 201 202 return (0); 203} 204 205static device_method_t an_pci_methods[] = { 206 /* Device interface */ 207 DEVMETHOD(device_probe, an_probe_pci), 208 DEVMETHOD(device_attach, an_attach_pci), 209 DEVMETHOD(device_detach, an_detach_pci), 210 DEVMETHOD(device_shutdown, an_shutdown), 211 { 0, 0 } 212}; 213 214static driver_t an_pci_driver = { 215 "an", 216 an_pci_methods, 217 sizeof(struct an_softc), 218}; 219 220static devclass_t an_devclass; 221 222DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0); 223