264 lines
7.1 KiB
C
264 lines
7.1 KiB
C
/* $NetBSD: if_em.c,v 1.2 1997/10/18 04:39:12 mark Exp $ */
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/*
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* Copyright (C) 1997 Mark Brinicombe
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* 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 Mark Brinicombe for
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* the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This driver uses the generic dp8390 IC driver
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*
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* Currently supports:
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* ANT EtherM
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*/
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/*#define NEW
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#define DP8390_DEBUG*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <machine/bus.h>
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#include <machine/irqhandler.h>
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#include <machine/io.h>
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#include <machine/bootconfig.h>
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#include <machine/katelib.h>
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#include <dev/ic/dp8390reg.h>
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/*#include <dev/ic/dp8390var.h>*/ /* Temporary till we merge */
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#include <arch/arm32/dev/dp8390var.h>
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#include <arch/arm32/dev/dp8390_pio.h>
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#include <arch/arm32/podulebus/podulebus.h>
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#include <arch/arm32/podulebus/podules.h>
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#include <arch/arm32/podulebus/if_emreg.h>
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/*
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* em_softc: per line info and status
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*/
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struct em_softc {
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struct dp8390_softc sc_dp8390;
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int sc_podule_number;
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podule_t *sc_podule;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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struct bus_space sc_tag;
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};
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#ifdef DP8390_DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x)
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#endif
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static int emprobe __P((struct device *, struct cfdata *, void *));
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static void emattach __P((struct device *, struct device *, void *));
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struct cfattach em_ca = {
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sizeof(struct em_softc), emprobe, emattach
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};
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struct cfdriver em_cd = {
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NULL, "em", DV_IFNET
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};
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static struct bus_space em_bs_tag;
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/*
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* Determine if the device is present.
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*/
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static int
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emprobe(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct podule_attach_args *pa = (void *) aux;
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/* Look for a network slot interface */
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if (matchpodule(pa, MANUFACTURER_ANT, PODULE_ANT_ETHERM, -1) == 0)
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return(0);
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return(1);
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}
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/*
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* Install interface into kernel networking data structures.
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*/
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static void
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emattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct podule_attach_args *pa = (void *)aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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struct em_softc *emsc = (void *)self;
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struct dp8390_softc *sc = &emsc->sc_dp8390;
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struct cfdata *cf = sc->sc_dev.dv_cfdata;
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int dsr;
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int loop;
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/* Check a few things about the attach args */
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if (pa->pa_podule_number == -1)
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panic("Podule has disappeared !");
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emsc->sc_podule_number = pa->pa_podule_number;
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emsc->sc_podule = pa->pa_podule;
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podules[emsc->sc_podule_number].attached = 1; /* XXX */
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/*
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* Ok we need our own bus tag as the register spacing
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* is not the default.
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*
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* For the podulebus the bus tag cookie is the shift
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* to apply to registers
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* So duplicate the bus space tag and change the
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* cookie.
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*/
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emsc->sc_tag = *pa->pa_iot;
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emsc->sc_tag.bs_cookie = (void *) 5;
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emsc->sc_iot = &emsc->sc_tag;
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/* Map all the EtherM I/O space */
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if (bus_space_map(emsc->sc_iot, emsc->sc_podule->fast_base + EM_IO_OFFSET,
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EM_IO_SIZE, 0, &emsc->sc_ioh))
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panic("%s: Cannot map IO space\n", self->dv_xname);
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/* Inherit flags from the config */
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sc->sc_flags = self->dv_cfdata->cf_flags;
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sc->sc_flags |= DP8390_FORCE_PIO | DP8390_FORCE_16BIT_MODE;
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/* Set up various softc defaults */
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sc->is790 = 0;
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/* Map register offsets */
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for (loop = 0; loop < 16; loop++)
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sc->sc_reg_map[loop] = loop;
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sc->dcr_reg = (ED_DCR_FT1 | ED_DCR_WTS | ED_DCR_LS);
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/* Map the NIC registers */
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sc->sc_regt = emsc->sc_iot;
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if (bus_space_subregion(emsc->sc_iot, emsc->sc_ioh,
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EM_NIC_OFFSET, EM_NIC_SIZE, &sc->sc_regh)) {
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panic(" failed to map register space\n");
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}
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/* Set up the packet buffer memory */
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sc->page_offset = 0x40;
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sc->mem_start = 0x4000;
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sc->mem_size = 0x4000;
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/* Map the PIO data register for the buffer memory */
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sc->sc_buft = emsc->sc_iot;
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if (bus_space_subregion(emsc->sc_iot, emsc->sc_ioh,
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EM_DATA_OFFSET, sc->mem_size, &sc->sc_bufh)) {
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panic(" failed to map register space\n");
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}
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/* Build station address from machine ID */
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sc->sc_enaddr[0] = 0x00;
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sc->sc_enaddr[1] = 0x00;
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sc->sc_enaddr[2] = 0xa4;
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sc->sc_enaddr[3] = bootconfig.machine_id[2] + 0x10;
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sc->sc_enaddr[4] = bootconfig.machine_id[1];
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sc->sc_enaddr[5] = bootconfig.machine_id[0];
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/*
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* Override test_mem, write_mbuf,ring_copy and read_hdr functions;
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* other defaults already work properly.
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*/
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sc->test_mem = dp8390_pio_test_mem;
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sc->write_mbuf = dp8390_pio_write_mbuf;
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sc->ring_copy = dp8390_pio_ring_copy;
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sc->read_hdr= dp8390_pio_read_hdr;
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printf("\n");
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if (dp8390_config(sc)) {
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bus_space_unmap(emsc->sc_iot, emsc->sc_ioh, EM_IO_SIZE);
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return;
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}
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/* Report packet buffer memory size */
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printf("%s: %dKB buffer memory", self->dv_xname, sc->mem_size / 1024);
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/* Get the Diagnostic Status Register */
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dsr = bus_space_read_1(emsc->sc_iot, emsc->sc_ioh, EM_DSR_REG);
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/* Check for bits that indicate a fault */
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if (!(dsr & EM_DSR_20M))
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printf(", VCO faulty");
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if (!(dsr & EM_DSR_TCOK))
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printf(", TxClk faulty");
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/* Report status of card */
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if (dsr & EM_DSR_POL)
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printf(", UTP reverse polarity");
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if (dsr & EM_DSR_JAB)
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printf(", jabber");
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if (dsr & EM_DSR_LNK)
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printf(", link OK");
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if (dsr & EM_DSR_LBK)
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printf(", loopback");
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if (dsr & EM_DSR_UTP)
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printf(", UTP");
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printf("\n");
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/* Install an interrupt handler */
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sc->sc_ih = intr_claim(IRQ_NETSLOT, IPL_NET, "net: em", dp8390_intr, sc);
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if (sc->sc_ih == NULL)
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panic("%s: Cannot install IRQ handler", self->dv_xname);
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}
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#if 0
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static int
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em_intr(arg)
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void *arg;
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{
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struct dp8390_softc *sc = arg;
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if (dp8390_intr(sc, 0))
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return(1);
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return(0);
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}
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#endif
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