diff options
Diffstat (limited to 'sys/dev/pdq/if_fpa.c')
| -rw-r--r-- | sys/dev/pdq/if_fpa.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/sys/dev/pdq/if_fpa.c b/sys/dev/pdq/if_fpa.c new file mode 100644 index 0000000..619a227 --- /dev/null +++ b/sys/dev/pdq/if_fpa.c @@ -0,0 +1,221 @@ +/*- + * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com> + * 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. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. + * + * $FreeBSD$ + * + */ + +/* + * DEC PDQ FDDI Controller; code for BSD derived operating systems + * + * This module supports the DEC DEFPA PCI FDDI Controller + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/socket.h> + +#include <sys/module.h> +#include <sys/bus.h> + +#include <machine/bus_memio.h> +#include <machine/bus_pio.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/if_media.h> +#include <net/fddi.h> + +#include <dev/pci/pcivar.h> +#include <dev/pci/pcireg.h> + +#include <dev/pdq/pdq_freebsd.h> +#include <dev/pdq/pdqreg.h> + +#define DEC_VENDORID 0x1011 +#define DEFPA_CHIPID 0x000F + +#define DEFPA_LATENCY 0x88 + +#define PCI_CFLT 0x0C /* Configuration Latency */ +#define PCI_CBMA 0x10 /* Configuration Base Memory Address */ +#define PCI_CBIO 0x14 /* Configuration Base I/O Address */ + +static int pdq_pci_probe (device_t); +static int pdq_pci_attach (device_t); +static int pdq_pci_detach (device_t); +static void pdq_pci_shutdown (device_t); +static void pdq_pci_ifintr (void *); + +static void +pdq_pci_ifintr(void *arg) +{ + device_t dev; + pdq_softc_t *sc; + + dev = (device_t)arg; + sc = device_get_softc(dev); + + PDQ_LOCK(sc); + (void) pdq_interrupt(sc->sc_pdq); + PDQ_UNLOCK(sc); + + return; +} + +/* + * This is the PCI configuration support. + */ +static int +pdq_pci_probe(device_t dev) +{ + if (pci_get_vendor(dev) == DEC_VENDORID && + pci_get_device(dev) == DEFPA_CHIPID) { + device_set_desc(dev, "Digital DEFPA PCI FDDI Controller"); + return (0); + } + + return (ENXIO); +} + +static int +pdq_pci_attach(device_t dev) +{ + pdq_softc_t *sc; + struct ifnet *ifp; + u_int32_t command; + int error; + + sc = device_get_softc(dev); + ifp = &sc->arpcom.ac_if; + + sc->dev = dev; + + /* + * Map control/status registers. + */ + pci_enable_busmaster(dev); + + command = pci_read_config(dev, PCIR_LATTIMER, 1); + if (command < DEFPA_LATENCY) { + command = DEFPA_LATENCY; + pci_write_config(dev, PCIR_LATTIMER, command, 1); + } + + sc->mem_rid = PCI_CBMA; + sc->mem_type = SYS_RES_MEMORY; + sc->mem = bus_alloc_resource(dev, sc->mem_type, &sc->mem_rid, + 0, ~0, 1, RF_ACTIVE); + if (!sc->mem) { + device_printf(dev, "Unable to allocate I/O space resource.\n"); + error = ENXIO; + goto bad; + } + sc->mem_bsh = rman_get_bushandle(sc->mem); + sc->mem_bst = rman_get_bustag(sc->mem); + + sc->irq_rid = 0; + sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, + 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE); + if (!sc->irq) { + device_printf(dev, "Unable to allocate interrupt resource.\n"); + error = ENXIO; + goto bad; + } + + ifp->if_name = "fpa"; + ifp->if_unit = device_get_unit(dev); + + sc->sc_pdq = pdq_initialize(sc->mem_bst, sc->mem_bsh, + ifp->if_name, ifp->if_unit, + (void *)sc, PDQ_DEFPA); + if (sc->sc_pdq == NULL) { + device_printf(dev, "Initialization failed.\n"); + error = ENXIO; + goto bad; + } + + error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, + pdq_pci_ifintr, dev, &sc->irq_ih); + if (error) { + device_printf(dev, "Failed to setup interrupt handler.\n"); + error = ENXIO; + goto bad; + } + + bcopy((caddr_t) sc->sc_pdq->pdq_hwaddr.lanaddr_bytes, + (caddr_t) sc->arpcom.ac_enaddr, FDDI_ADDR_LEN); + pdq_ifattach(sc); + + return (0); +bad: + pdq_free(dev); + return (error); +} + +static int +pdq_pci_detach (dev) + device_t dev; +{ + pdq_softc_t *sc; + + sc = device_get_softc(dev); + pdq_ifdetach(sc); + + return (0); +} + +static void +pdq_pci_shutdown(device_t dev) +{ + pdq_softc_t *sc; + + sc = device_get_softc(dev); + pdq_hwreset(sc->sc_pdq); + + return; +} + +static device_method_t pdq_pci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, pdq_pci_probe), + DEVMETHOD(device_attach, pdq_pci_attach), + DEVMETHOD(device_detach, pdq_pci_detach), + DEVMETHOD(device_shutdown, pdq_pci_shutdown), + + { 0, 0 } +}; + +static driver_t pdq_pci_driver = { + "fpa", + pdq_pci_methods, + sizeof(pdq_softc_t), +}; + +DRIVER_MODULE(fpa, pci, pdq_pci_driver, pdq_devclass, 0, 0); +MODULE_DEPEND(fpa, pci, 1, 1, 1); +MODULE_DEPEND(fpa, fddi, 1, 1, 1); |
