diff options
Diffstat (limited to 'sys/dev/hme/if_hme_pci.c')
| -rw-r--r-- | sys/dev/hme/if_hme_pci.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/sys/dev/hme/if_hme_pci.c b/sys/dev/hme/if_hme_pci.c new file mode 100644 index 0000000..6128608 --- /dev/null +++ b/sys/dev/hme/if_hme_pci.c @@ -0,0 +1,196 @@ +/* + * Copyright (c) 2000 Matthew R. Green + * 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. 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. + * + * from: NetBSD: if_hme_pci.c,v 1.4 2001/08/27 22:18:49 augustss Exp + * + * $FreeBSD$ + */ + +/* + * PCI front-end device driver for the HME ethernet device. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/resource.h> +#include <sys/socket.h> + +#include <machine/bus.h> +#include <machine/ofw_machdep.h> +#include <machine/resource.h> + +#include <sys/rman.h> + +#include <net/ethernet.h> +#include <net/if.h> +#include <net/if_arp.h> +#include <net/if_dl.h> +#include <net/if_media.h> + +#include <mii/mii.h> +#include <mii/miivar.h> + +#include <pci/pcivar.h> +#include <pci/pcireg.h> + +#include <hme/if_hmereg.h> +#include <hme/if_hmevar.h> + +#include "miibus_if.h" + +struct hme_pci_softc { + struct hme_softc hsc_hme; /* HME device */ + struct resource *hsc_sres; + int hsc_srid; + struct resource *hsc_ires; + int hsc_irid; + bus_space_tag_t hsc_memt; + bus_space_handle_t hsc_memh; + void *hsc_ih; +}; + +static int hme_pci_probe(device_t); +static int hme_pci_attach(device_t); + +static device_method_t hme_pci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, hme_pci_probe), + DEVMETHOD(device_attach, hme_pci_attach), + + /* bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_driver_added, bus_generic_driver_added), + + /* MII interface */ + DEVMETHOD(miibus_readreg, hme_mii_readreg), + DEVMETHOD(miibus_writereg, hme_mii_writereg), + DEVMETHOD(miibus_statchg, hme_mii_statchg), + + { 0, 0 } +}; + +static driver_t hme_pci_driver = { + "hme", + hme_pci_methods, + sizeof(struct hme_pci_softc) +}; + +DRIVER_MODULE(if_hme, pci, hme_pci_driver, hme_devclass, 0, 0); + +int +hme_pci_probe(device_t dev) +{ + + if (pci_get_vendor(dev) == 0x108e && + pci_get_device(dev) == 0x1001) { + device_set_desc(dev, "Sun HME 10/100 Ethernet"); + return (0); + } + return (ENXIO); +} + +int +hme_pci_attach(device_t dev) +{ + struct hme_pci_softc *hsc = device_get_softc(dev); + struct hme_softc *sc = &hsc->hsc_hme; + u_int16_t csr; + int error; + + /* + * enable io/memory-space accesses. this is kinda of gross; but + * the hme comes up with neither IO space enabled, or memory space. + */ + csr = pci_read_config(dev, PCIR_COMMAND, 2); + csr |= PCIM_CMD_PORTEN | PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN; + pci_write_config(dev, PCIR_COMMAND, csr, 2); + + sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ + sc->sc_dev = dev; + + /* + * Map five register banks: + * + * bank 0: HME SEB registers: +0x0000 + * bank 1: HME ETX registers: +0x2000 + * bank 2: HME ERX registers: +0x4000 + * bank 3: HME MAC registers: +0x6000 + * bank 4: HME MIF registers: +0x7000 + * + */ + hsc->hsc_srid = PCI_HME_BASEADDR; + hsc->hsc_sres = bus_alloc_resource(dev, SYS_RES_MEMORY, &hsc->hsc_srid, + 0, ~0, 1, RF_ACTIVE); + if (hsc->hsc_sres == NULL) { + device_printf(dev, "could not map device registers\n"); + return (ENXIO); + } + hsc->hsc_irid = 0; + hsc->hsc_ires = bus_alloc_resource(dev, SYS_RES_IRQ, &hsc->hsc_irid, 0, + ~0, 1, RF_ACTIVE); + if (hsc->hsc_ires == NULL) { + device_printf(dev, "could not allocate interrupt\n"); + error = ENXIO; + goto fail_sres; + } + sc->sc_sebt = sc->sc_etxt = sc->sc_erxt = sc->sc_mact = sc->sc_mift = + rman_get_bustag(hsc->hsc_sres); + sc->sc_sebh = sc->sc_etxh = sc->sc_erxh = sc->sc_mach = sc->sc_mifh = + rman_get_bushandle(hsc->hsc_sres); + sc->sc_sebo = 0; + sc->sc_etxo = 0x2000; + sc->sc_erxo = 0x4000; + sc->sc_maco = 0x6000; + sc->sc_mifo = 0x7000; + + OF_getetheraddr(dev, sc->sc_arpcom.ac_enaddr); + + sc->sc_burst = 64; /* XXX */ + + /* + * call the main configure + */ + if ((error = hme_config(sc)) != 0) { + device_printf(dev, "could not be configured\n"); + goto fail_ires; + } + + if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET, hme_intr, + sc, &hsc->hsc_ih)) != 0) { + device_printf(dev, "couldn't establish interrupt\n"); + goto fail_ires; + } + return (0); + +fail_ires: + bus_release_resource(dev, SYS_RES_IRQ, hsc->hsc_irid, hsc->hsc_ires); +fail_sres: + bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_srid, hsc->hsc_sres); + return (ENXIO); +} |
