if_an_pci.c revision 256281
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 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: stable/10/sys/dev/an/if_an_pci.c 254263 2013-08-12 23:30:01Z scottl $"); 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/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 <sys/lock.h> 74#include <sys/mutex.h> 75#include <machine/resource.h> 76 77#include <net/if.h> 78#include <net/if_arp.h> 79#include <net/ethernet.h> 80#include <net/if_dl.h> 81#include <net/if_media.h> 82 83#include <dev/pci/pcireg.h> 84#include <dev/pci/pcivar.h> 85 86#include <dev/an/if_aironet_ieee.h> 87#include <dev/an/if_anreg.h> 88 89struct an_type { 90 u_int16_t an_vid; 91 u_int16_t an_did; 92 char *an_name; 93}; 94 95#define AIRONET_VENDORID 0x14B9 96#define AIRONET_DEVICEID_35x 0x0350 97#define AIRONET_DEVICEID_4500 0x4500 98#define AIRONET_DEVICEID_4800 0x4800 99#define AIRONET_DEVICEID_4xxx 0x0001 100#define AIRONET_DEVICEID_MPI350 0xA504 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_35x, "Cisco Aironet 350 Series" }, 106 { AIRONET_VENDORID, AIRONET_DEVICEID_MPI350, "Cisco Aironet MPI350" }, 107 { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" }, 108 { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" }, 109 { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" }, 110 { 0, 0, NULL } 111}; 112 113static int an_probe_pci (device_t); 114static int an_attach_pci (device_t); 115static int an_suspend_pci (device_t); 116static int an_resume_pci (device_t); 117 118static int 119an_probe_pci(device_t dev) 120{ 121 struct an_type *t; 122 struct an_softc *sc = device_get_softc(dev); 123 124 bzero(sc, sizeof(struct an_softc)); 125 t = an_devs; 126 127 while (t->an_name != NULL) { 128 if (pci_get_vendor(dev) == t->an_vid && 129 pci_get_device(dev) == t->an_did) { 130 device_set_desc(dev, t->an_name); 131 an_pci_probe(dev); 132 return(BUS_PROBE_DEFAULT); 133 } 134 t++; 135 } 136 137 return(ENXIO); 138} 139 140static int 141an_attach_pci(dev) 142 device_t dev; 143{ 144 struct an_softc *sc; 145 int flags, error = 0; 146 147 sc = device_get_softc(dev); 148 flags = device_get_flags(dev); 149 150 if (pci_get_vendor(dev) == AIRONET_VENDORID && 151 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) { 152 sc->mpi350 = 1; 153 sc->port_rid = PCIR_BAR(0); 154 } else { 155 sc->port_rid = AN_PCI_LOIO; 156 } 157 error = an_alloc_port(dev, sc->port_rid, 1); 158 159 if (error) { 160 device_printf(dev, "couldn't map ports\n"); 161 goto fail; 162 } 163 164 /* Allocate memory for MPI350 */ 165 if (sc->mpi350) { 166 /* Allocate memory */ 167 sc->mem_rid = PCIR_BAR(1); 168 error = an_alloc_memory(dev, sc->mem_rid, 1); 169 if (error) { 170 device_printf(dev, "couldn't map memory\n"); 171 goto fail; 172 } 173 174 /* Allocate aux. memory */ 175 sc->mem_aux_rid = PCIR_BAR(2); 176 error = an_alloc_aux_memory(dev, sc->mem_aux_rid, 177 AN_AUX_MEM_SIZE); 178 if (error) { 179 device_printf(dev, "couldn't map aux memory\n"); 180 goto fail; 181 } 182 183 /* Allocate DMA region */ 184 error = bus_dma_tag_create(bus_get_dma_tag(dev),/* parent */ 185 1, 0, /* alignment, bounds */ 186 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 187 BUS_SPACE_MAXADDR, /* highaddr */ 188 NULL, NULL, /* filter, filterarg */ 189 0x3ffff, /* maxsize XXX */ 190 1, /* nsegments */ 191 0xffff, /* maxsegsize XXX */ 192 BUS_DMA_ALLOCNOW, /* flags */ 193 NULL, /* lockfunc */ 194 NULL, /* lockarg */ 195 &sc->an_dtag); 196 if (error) { 197 device_printf(dev, "couldn't get DMA region\n"); 198 goto fail; 199 } 200 } 201 202 /* Allocate interrupt */ 203 error = an_alloc_irq(dev, 0, RF_SHAREABLE); 204 if (error) { 205 device_printf(dev, "couldn't get interrupt\n"); 206 goto fail; 207 } 208 209 sc->an_dev = dev; 210 error = an_attach(sc, flags); 211 if (error) { 212 device_printf(dev, "couldn't attach\n"); 213 goto fail; 214 } 215 216 /* 217 * Must setup the interrupt after the an_attach to prevent racing. 218 */ 219 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, 220 NULL, an_intr, sc, &sc->irq_handle); 221 if (error) 222 device_printf(dev, "couldn't setup interrupt\n"); 223 224fail: 225 if (error) 226 an_release_resources(dev); 227 return(error); 228} 229 230static int 231an_suspend_pci(device_t dev) 232{ 233 an_shutdown(dev); 234 235 return (0); 236} 237 238static int 239an_resume_pci(device_t dev) 240{ 241 an_resume(dev); 242 243 return (0); 244} 245 246static device_method_t an_pci_methods[] = { 247 /* Device interface */ 248 DEVMETHOD(device_probe, an_probe_pci), 249 DEVMETHOD(device_attach, an_attach_pci), 250 DEVMETHOD(device_detach, an_detach), 251 DEVMETHOD(device_shutdown, an_shutdown), 252 DEVMETHOD(device_suspend, an_suspend_pci), 253 DEVMETHOD(device_resume, an_resume_pci), 254 { 0, 0 } 255}; 256 257static driver_t an_pci_driver = { 258 "an", 259 an_pci_methods, 260 sizeof(struct an_softc), 261}; 262 263static devclass_t an_devclass; 264 265DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0); 266MODULE_DEPEND(an, pci, 1, 1, 1); 267MODULE_DEPEND(an, wlan, 1, 1, 1); 268