223 lines
6.4 KiB
C
223 lines
6.4 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* This is a PCI shim for the Aironet PC4500/4800 wireless network
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* driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
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* which all have basically the same interface. The ISA and PCI cards
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* are actually bridge adapters with PCMCIA cards inserted into them,
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* however they appear as normal PCI or ISA devices to the host.
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*
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* All we do here is handle the PCI probe and attach and set up an
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* interrupt handler entry point. The PCI version of the card uses
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* a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
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* multiple PCI address space mappings. The primary mapping at PCI
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* register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
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* The I/O address of the Aironet is actually at register 0x18, which
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* is the local bus mapping register for bus space 0. There are also
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* registers for additional register spaces at registers 0x1C and
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* 0x20, but these are unused in the Aironet devices. To find out
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* more, you need a datasheet for the 9050 from PLX, but you have
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* to go through their sales office to get it. Bleh.
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*/
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#include "opt_inet.h"
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#ifdef INET
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#define ANCACHE
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/mutex.h>
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#include <machine/resource.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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#include <dev/an/if_aironet_ieee.h>
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#include <dev/an/if_anreg.h>
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struct an_type {
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u_int16_t an_vid;
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u_int16_t an_did;
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char *an_name;
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};
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#define AIRONET_VENDORID 0x14B9
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#define AIRONET_DEVICEID_4500 0x4500
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#define AIRONET_DEVICEID_4800 0x4800
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#define AIRONET_DEVICEID_4xxx 0x0001
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#define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
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#define AN_PCI_LOIO 0x18 /* Aironet iobase */
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static struct an_type an_devs[] = {
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{ AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" },
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{ AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
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{ AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
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{ 0, 0, NULL }
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};
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static int an_probe_pci __P((device_t));
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static int an_attach_pci __P((device_t));
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static int an_detach_pci __P((device_t));
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static int an_probe_pci(device_t dev)
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{
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struct an_type *t;
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t = an_devs;
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while(t->an_name != NULL) {
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if (pci_get_vendor(dev) == t->an_vid &&
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pci_get_device(dev) == t->an_did) {
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device_set_desc(dev, t->an_name);
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return(0);
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}
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t++;
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}
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return(ENXIO);
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}
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static int an_attach_pci(dev)
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device_t dev;
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{
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u_int32_t command;
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struct an_softc *sc;
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int unit, flags, error = 0;
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sc = device_get_softc(dev);
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unit = device_get_unit(dev);
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flags = device_get_flags(dev);
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bzero(sc, sizeof(struct an_softc));
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/*
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* Map control/status registers.
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*/
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command = pci_read_config(dev, PCIR_COMMAND, 4);
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command |= PCIM_CMD_PORTEN;
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pci_write_config(dev, PCIR_COMMAND, command, 4);
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command = pci_read_config(dev, PCIR_COMMAND, 4);
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if (!(command & PCIM_CMD_PORTEN)) {
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printf("an%d: failed to enable I/O ports!\n", unit);
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error = ENXIO;
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goto fail;
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}
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sc->port_rid = AN_PCI_LOIO;
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error = an_alloc_port(dev, sc->port_rid, 1);
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if (error) {
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printf("an%d: couldn't map ports\n", unit);
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goto fail;
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}
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sc->an_btag = rman_get_bustag(sc->port_res);
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sc->an_bhandle = rman_get_bushandle(sc->port_res);
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/* Allocate interrupt */
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error = an_alloc_irq(dev, 0, RF_SHAREABLE);
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if (error) {
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an_release_resources(dev);
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goto fail;
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}
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error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
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an_intr, sc, &sc->irq_handle);
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if (error) {
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an_release_resources(dev);
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goto fail;
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}
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sc->an_dev = dev;
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error = an_attach(sc, device_get_unit(dev), flags);
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fail:
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return(error);
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}
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static int
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an_detach_pci(device_t dev)
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{
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struct an_softc *sc = device_get_softc(dev);
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struct ifnet *ifp = &sc->arpcom.ac_if;
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an_stop(sc);
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ether_ifdetach(ifp, ETHER_BPF_SUPPORTED);
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bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
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an_release_resources(dev);
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return (0);
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}
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static device_method_t an_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, an_probe_pci),
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DEVMETHOD(device_attach, an_attach_pci),
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DEVMETHOD(device_detach, an_detach_pci),
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DEVMETHOD(device_shutdown, an_shutdown),
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{ 0, 0 }
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};
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static driver_t an_pci_driver = {
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"an",
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an_pci_methods,
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sizeof(struct an_softc),
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};
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static devclass_t an_devclass;
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DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0);
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