if_an_pci.c revision 143163
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: head/sys/dev/an/if_an_pci.c 143163 2005-03-05 19:06:12Z imp $"); 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_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 (device_t); 113static int an_attach_pci (device_t); 114static int an_suspend_pci (device_t); 115static int an_resume_pci (device_t); 116 117static int 118an_probe_pci(device_t dev) 119{ 120 struct an_type *t; 121 122 t = an_devs; 123 124 while (t->an_name != NULL) { 125 if (pci_get_vendor(dev) == t->an_vid && 126 pci_get_device(dev) == t->an_did) { 127 device_set_desc(dev, t->an_name); 128 return(BUS_PROBE_DEFAULT); 129 } 130 t++; 131 } 132 133 if (pci_get_vendor(dev) == AIRONET_VENDORID && 134 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) { 135 device_set_desc(dev, "Cisco Aironet MPI350"); 136 return(BUS_PROBE_DEFAULT); 137 } 138 139 return(ENXIO); 140} 141 142static int 143an_attach_pci(dev) 144 device_t dev; 145{ 146 u_int32_t command; 147 struct an_softc *sc; 148 int unit, flags, error = 0; 149 150 sc = device_get_softc(dev); 151 unit = device_get_unit(dev); 152 flags = device_get_flags(dev); 153 bzero(sc, sizeof(struct an_softc)); 154 155 if (pci_get_vendor(dev) == AIRONET_VENDORID && 156 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) { 157 sc->mpi350 = 1; 158 sc->port_rid = PCIR_BAR(0); 159 } else { 160 /* 161 * Map control/status registers. 162 */ 163 command = pci_read_config(dev, PCIR_COMMAND, 4); 164 command |= PCIM_CMD_PORTEN; 165 pci_write_config(dev, PCIR_COMMAND, command, 4); 166 command = pci_read_config(dev, PCIR_COMMAND, 4); 167 168 if (!(command & PCIM_CMD_PORTEN)) { 169 printf("an%d: failed to enable I/O ports!\n", unit); 170 error = ENXIO; 171 goto fail; 172 } 173 sc->port_rid = AN_PCI_LOIO; 174 } 175 error = an_alloc_port(dev, sc->port_rid, 1); 176 177 if (error) { 178 printf("an%d: couldn't map ports\n", unit); 179 goto fail; 180 } 181 182 sc->an_btag = rman_get_bustag(sc->port_res); 183 sc->an_bhandle = rman_get_bushandle(sc->port_res); 184 185 /* Allocate memory for MPI350 */ 186 if (sc->mpi350) { 187 /* Allocate memory */ 188 sc->mem_rid = PCIR_BAR(1); 189 error = an_alloc_memory(dev, sc->mem_rid, 1); 190 if (error) { 191 printf("an%d: couldn't map memory\n", unit); 192 goto fail; 193 } 194 sc->an_mem_btag = rman_get_bustag(sc->mem_res); 195 sc->an_mem_bhandle = rman_get_bushandle(sc->mem_res); 196 197 /* Allocate aux. memory */ 198 sc->mem_aux_rid = PCIR_BAR(2); 199 error = an_alloc_aux_memory(dev, sc->mem_aux_rid, 200 AN_AUX_MEM_SIZE); 201 if (error) { 202 printf("an%d: couldn't map aux memory\n", unit); 203 goto fail; 204 } 205 sc->an_mem_aux_btag = rman_get_bustag(sc->mem_aux_res); 206 sc->an_mem_aux_bhandle = rman_get_bushandle(sc->mem_aux_res); 207 208 /* Allocate DMA region */ 209 error = bus_dma_tag_create(NULL, /* parent */ 210 1, 0, /* alignment, bounds */ 211 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 212 BUS_SPACE_MAXADDR, /* highaddr */ 213 NULL, NULL, /* filter, filterarg */ 214 0x3ffff, /* maxsize XXX */ 215 1, /* nsegments */ 216 0xffff, /* maxsegsize XXX */ 217 BUS_DMA_ALLOCNOW, /* flags */ 218 NULL, /* lockfunc */ 219 NULL, /* lockarg */ 220 &sc->an_dtag); 221 if (error) { 222 printf("an%d: couldn't get DMA region\n", unit); 223 goto fail; 224 } 225 } 226 227 /* Allocate interrupt */ 228 error = an_alloc_irq(dev, 0, RF_SHAREABLE); 229 if (error) { 230 goto fail; 231 } 232 233 sc->an_dev = dev; 234 error = an_attach(sc, device_get_unit(dev), flags); 235 if (error) { 236 goto fail; 237 } 238 239 /* 240 * Must setup the interrupt after the an_attach to prevent racing. 241 */ 242 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, 243 an_intr, sc, &sc->irq_handle); 244 245fail: 246 if (error) 247 an_release_resources(dev); 248 return(error); 249} 250 251static int 252an_suspend_pci(device_t dev) 253{ 254 an_shutdown(dev); 255 256 return (0); 257} 258 259static int 260an_resume_pci(device_t dev) 261{ 262 an_resume(dev); 263 264 return (0); 265} 266 267static device_method_t an_pci_methods[] = { 268 /* Device interface */ 269 DEVMETHOD(device_probe, an_probe_pci), 270 DEVMETHOD(device_attach, an_attach_pci), 271 DEVMETHOD(device_detach, an_detach), 272 DEVMETHOD(device_shutdown, an_shutdown), 273 DEVMETHOD(device_suspend, an_suspend_pci), 274 DEVMETHOD(device_resume, an_resume_pci), 275 { 0, 0 } 276}; 277 278static driver_t an_pci_driver = { 279 "an", 280 an_pci_methods, 281 sizeof(struct an_softc), 282}; 283 284static devclass_t an_devclass; 285 286DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0); 287MODULE_DEPEND(an, pci, 1, 1, 1); 288MODULE_DEPEND(an, wlan, 1, 1, 1); 289