freebsd-dev/sys/dev/hme/if_hme_pci.c

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/*
* 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;
int error;
/*
* Enable memory-space and bus master accesses. This is kinda of
* gross; but the hme comes up with neither enabled.
*/
pci_enable_busmaster(dev);
pci_enable_io(dev, SYS_RES_MEMORY);
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_SHAREABLE | 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);
}