/* $NetBSD: if_lc_isa.c,v 1.35 2016/07/11 11:31:50 msaitoh Exp $ */
/*-
* Copyright (c) 1994, 1995, 1997 Matt Thomas <
[email protected]>
* 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.
*/
/*
* DEC EtherWORKS 3 Ethernet Controllers
*
* Written by Matt Thomas
*
* This driver supports the LEMAC (DE203, DE204, and DE205) cards.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_lc_isa.c,v 1.35 2016/07/11 11:31:50 msaitoh Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <sys/cpu.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/ic/lemacreg.h>
#include <dev/ic/lemacvar.h>
#include <dev/isa/isavar.h>
extern struct cfdriver lc_cd;
static int lemac_isa_find(lemac_softc_t *, const char *,
struct isa_attach_args *, int);
static int lemac_isa_probe(device_t, cfdata_t, void *);
static void lemac_isa_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(lc_isa, sizeof(lemac_softc_t),
lemac_isa_probe, lemac_isa_attach, NULL, NULL);
static int
lemac_isa_find(lemac_softc_t *sc, const char *xname,
struct isa_attach_args *ia, int attach)
{
bus_addr_t maddr;
bus_size_t msiz;
int rv = 0, irq;
if (ia->ia_nio < 1)
return (0);
if (ia->ia_niomem < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
/*
* Disallow wildcarded i/o addresses.
*/
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return 0;
/*
* Make sure this is a valid LEMAC address.
*/
if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1))
return 0;
sc->sc_iot = ia->ia_iot;
if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_IOSIZE, 0,
&sc->sc_ioh)) {
if (attach)
printf(": can't map i/o space\n");
return 0;
}
/*
* Read the Ethernet address from the EEPROM.
* It must start with one of the DEC OUIs and pass the
* DEC ethernet checksum test.
*/
if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
goto outio;
/*
* Get information about memory space and attempt to map it.
*/
lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msiz, &irq);
if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM &&
ia->ia_iomem[0].ir_addr != maddr)
goto outio;
if (attach) {
if (msiz == 0) {
printf(": memory configuration is invalid\n");
goto outio;
}
sc->sc_memt = ia->ia_memt;
if (bus_space_map(ia->ia_memt, maddr, msiz, 0, &sc->sc_memh)) {
printf(": can't map mem space\n");
goto outio;
}
}
/*
* Double-check IRQ configuration.
*/
if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
ia->ia_irq[0].ir_irq != irq)
printf("%s: overriding IRQ %d to %d\n", xname,
ia->ia_irq[0].ir_irq, irq);
if (attach) {
sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
if (sc->sc_ats == NULL) {
aprint_normal("\n");
aprint_error(
"%s: warning: can't establish shutdown hook\n",
xname);
}
lemac_ifattach(sc);
sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
IPL_NET, lemac_intr, sc);
}
/*
* I guess we've found one.
*/
rv = 1;
ia->ia_nio = 1;
ia->ia_io[0].ir_size = LEMAC_IOSIZE;
ia->ia_niomem = 1;
ia->ia_iomem[0].ir_addr = maddr;
ia->ia_iomem[0].ir_size = msiz;
ia->ia_nirq = 1;
ia->ia_irq[0].ir_irq = irq;
ia->ia_ndrq = 0;
outio:
if (rv == 0 || !attach)
bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
return rv;
}
static int
lemac_isa_probe(device_t parent, cfdata_t match, void *aux)
{
struct isa_attach_args *ia = aux;
cfdata_t cf = match;
lemac_softc_t sc;
char xname[16];
snprintf(xname, sizeof(xname), "%s%d", lc_cd.cd_name, cf->cf_unit);
return lemac_isa_find(&sc, xname, ia, 0);
}
static void
lemac_isa_attach(device_t parent, device_t self, void *aux)
{
lemac_softc_t *sc = device_private(self);
struct isa_attach_args *ia = aux;
sc->sc_dev = self;
(void) lemac_isa_find(sc, device_xname(self), ia, 1);
}
