if_an_pci.c revision 56051
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 56051 2000-01-15 18:04:28Z 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/malloc.h> 66#include <sys/kernel.h> 67#include <sys/socket.h> 68 69#include <sys/module.h> 70#include <sys/bus.h> 71#include <machine/bus.h> 72#include <sys/rman.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 56051 2000-01-15 18:04:28Z 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 int s; 137 u_int32_t command; 138 struct an_softc *sc; 139 int unit, flags, error = 0; 140 141 s = splimp(); 142 143 sc = device_get_softc(dev); 144 unit = device_get_unit(dev); 145 flags = device_get_flags(dev); 146 bzero(sc, sizeof(struct an_softc)); 147 148 /* 149 * Map control/status registers. 150 */ 151 command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); 152 command |= PCIM_CMD_PORTEN; 153 pci_write_config(dev, PCI_COMMAND_STATUS_REG, command, 4); 154 command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); 155 156 if (!(command & PCIM_CMD_PORTEN)) { 157 printf("an%d: failed to enable I/O ports!\n", unit); 158 error = ENXIO; 159 goto fail; 160 } 161 162 sc->port_rid = AN_PCI_LOIO; 163 error = an_alloc_port(dev, sc->port_rid, 1); 164 165 if (error) { 166 printf("an%d: couldn't map ports\n", unit); 167 goto fail; 168 } 169 170 sc->an_btag = rman_get_bustag(sc->port_res); 171 sc->an_bhandle = rman_get_bushandle(sc->port_res); 172 173 /* Allocate interrupt */ 174 error = an_alloc_irq(dev, 0, RF_SHAREABLE); 175 if (error) { 176 an_release_resources(dev); 177 goto fail; 178 } 179 180 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, 181 an_intr, sc, &sc->irq_handle); 182 if (error) { 183 an_release_resources(dev); 184 goto fail; 185 } 186 187 error = an_attach(sc, device_get_unit(dev), flags); 188 189fail: 190 splx(s); 191 192 return(error); 193} 194 195static int 196an_detach_pci(device_t dev) 197{ 198 struct an_softc *sc = device_get_softc(dev); 199 struct ifnet *ifp = &sc->arpcom.ac_if; 200 201 an_stop(sc); 202 if_detach(ifp); 203 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle); 204 an_release_resources(dev); 205 206 return (0); 207} 208 209static device_method_t an_pci_methods[] = { 210 /* Device interface */ 211 DEVMETHOD(device_probe, an_probe_pci), 212 DEVMETHOD(device_attach, an_attach_pci), 213 DEVMETHOD(device_detach, an_detach_pci), 214 DEVMETHOD(device_shutdown, an_shutdown), 215 { 0, 0 } 216}; 217 218static driver_t an_pci_driver = { 219 "an", 220 an_pci_methods, 221 sizeof(struct an_softc), 222}; 223 224static devclass_t an_devclass; 225 226DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0); 227