diff options
Diffstat (limited to 'sys/dev/an/if_an_pci.c')
| -rw-r--r-- | sys/dev/an/if_an_pci.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/sys/dev/an/if_an_pci.c b/sys/dev/an/if_an_pci.c new file mode 100644 index 0000000..104d4de --- /dev/null +++ b/sys/dev/an/if_an_pci.c @@ -0,0 +1,226 @@ +/* + * Copyright (c) 1997, 1998, 1999 + * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * This is a PCI shim for the Aironet PC4500/4800 wireless network + * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices, + * which all have basically the same interface. The ISA and PCI cards + * are actually bridge adapters with PCMCIA cards inserted into them, + * however they appear as normal PCI or ISA devices to the host. + * + * All we do here is handle the PCI probe and attach and set up an + * interrupt handler entry point. The PCI version of the card uses + * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with + * multiple PCI address space mappings. The primary mapping at PCI + * register 0x14 is for the PLX chip itself, *NOT* the Aironet card. + * The I/O address of the Aironet is actually at register 0x18, which + * is the local bus mapping register for bus space 0. There are also + * registers for additional register spaces at registers 0x1C and + * 0x20, but these are unused in the Aironet devices. To find out + * more, you need a datasheet for the 9050 from PLX, but you have + * to go through their sales office to get it. Bleh. + */ + +#include "opt_inet.h" + +#ifdef INET +#define ANCACHE +#endif + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/sockio.h> +#include <sys/mbuf.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/socket.h> + +#include <sys/module.h> +#include <sys/bus.h> +#include <machine/bus.h> +#include <sys/rman.h> +#include <machine/resource.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_dl.h> + +#include <pci/pcireg.h> +#include <pci/pcivar.h> + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif + +#include <dev/an/if_aironet_ieee.h> +#include <dev/an/if_anreg.h> + +struct an_type { + u_int16_t an_vid; + u_int16_t an_did; + char *an_name; +}; + +#define AIRONET_VENDORID 0x14B9 +#define AIRONET_DEVICEID_4500 0x4500 +#define AIRONET_DEVICEID_4800 0x4800 +#define AIRONET_DEVICEID_4xxx 0x0001 +#define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ +#define AN_PCI_LOIO 0x18 /* Aironet iobase */ + +static struct an_type an_devs[] = { + { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" }, + { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" }, + { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" }, + { 0, 0, NULL } +}; + +static int an_probe_pci __P((device_t)); +static int an_attach_pci __P((device_t)); +static int an_detach_pci __P((device_t)); + +static int an_probe_pci(device_t dev) +{ + struct an_type *t; + + t = an_devs; + + while(t->an_name != NULL) { + if (pci_get_vendor(dev) == t->an_vid && + pci_get_vendor(dev) == t->an_did) { + device_set_desc(dev, t->an_name); + return(0); + } + t++; + } + + return(ENXIO); +} + +static int an_attach_pci(dev) + device_t dev; +{ + int s; + u_int32_t command; + struct an_softc *sc; + int unit, flags, error = 0; + + s = splimp(); + + sc = device_get_softc(dev); + unit = device_get_unit(dev); + flags = device_get_flags(dev); + bzero(sc, sizeof(struct an_softc)); + + /* + * Map control/status registers. + */ + command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); + command |= PCIM_CMD_PORTEN; + pci_write_config(dev, PCI_COMMAND_STATUS_REG, command, 4); + command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); + + if (!(command & PCIM_CMD_PORTEN)) { + printf("an%d: failed to enable I/O ports!\n", unit); + error = ENXIO; + goto fail; + } + + sc->port_rid = AN_PCI_LOIO; + error = an_alloc_port(dev, sc->port_rid, 1); + + if (error) { + printf("an%d: couldn't map ports\n", unit); + goto fail; + } + + sc->an_btag = rman_get_bustag(sc->port_res); + sc->an_bhandle = rman_get_bushandle(sc->port_res); + + /* Allocate interrupt */ + error = an_alloc_irq(dev, 0, RF_SHAREABLE); + if (error) { + an_release_resources(dev); + goto fail; + } + + error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, + an_intr, sc, &sc->irq_handle); + if (error) { + an_release_resources(dev); + goto fail; + } + + error = an_attach(sc, device_get_unit(dev), flags); + +fail: + splx(s); + + return(error); +} + +static int +an_detach_pci(device_t dev) +{ + struct an_softc *sc = device_get_softc(dev); + struct ifnet *ifp = &sc->arpcom.ac_if; + + an_stop(sc); + if_detach(ifp); + bus_teardown_intr(dev, sc->irq_res, sc->irq_handle); + an_release_resources(dev); + + return (0); +} + +static device_method_t an_pci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, an_probe_pci), + DEVMETHOD(device_attach, an_attach_pci), + DEVMETHOD(device_detach, an_detach_pci), + DEVMETHOD(device_shutdown, an_shutdown), + { 0, 0 } +}; + +static driver_t an_pci_driver = { + "an", + an_pci_methods, + sizeof(struct an_softc), +}; + +static devclass_t an_devclass; + +DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0); |
