NetBSD/sys/dev/isa/if_depca_isa.c

477 lines
13 KiB
C

/* $NetBSD: if_depca_isa.c,v 1.3 1998/07/21 17:36:06 drochner Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*-
* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)if_le.c 8.2 (Berkeley) 11/16/93
*/
#include "opt_inet.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#include <vm/vm.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
#define DEPCA_CSR 0x0
#define DEPCA_CSR_SHE 0x80 /* Shared memory enabled */
#define DEPCA_CSR_LOW32K 0x40 /* Map lower 32K chunk */
#define DEPCA_CSR_DUM 0x08 /* rev E compatibility */
#define DEPCA_CSR_IM 0x04 /* Interrupt masked */
#define DEPCA_CSR_IEN 0x02 /* Interrupt enabled */
#define DEPCA_RDP 0x4
#define DEPCA_RAP 0x6
#define DEPCA_ADP 0xc
struct depca_softc {
struct am7990_softc sc_am7990; /* glue to MI code */
void *sc_ih;
bus_space_tag_t sc_iot;
bus_space_tag_t sc_memt;
bus_space_handle_t sc_ioh;
bus_space_handle_t sc_memh;
};
int depca_isa_probe __P((struct device *, struct cfdata *, void *));
void depca_isa_attach __P((struct device *, struct device *, void *));
int le_depca_probe __P((struct device *, struct cfdata *, void *));
void le_depca_attach __P((struct device *, struct device *, void *));
struct cfattach depca_isa_ca = {
sizeof(struct device), depca_isa_probe, depca_isa_attach
}, le_depca_ca = {
sizeof(struct depca_softc), le_depca_probe, le_depca_attach
};
int depca_readprom __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *));
int depca_intredge __P((void *));
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_ddb.h"
#endif
#ifdef DDB
#define integrate
#define hide
#else
#define integrate static __inline
#define hide static
#endif
hide void depca_wrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
hide u_int16_t depca_rdcsr __P((struct lance_softc *, u_int16_t));
void depca_copytobuf __P((struct lance_softc *, void *, int, int));
void depca_copyfrombuf __P((struct lance_softc *, void *, int, int));
void depca_zerobuf __P((struct lance_softc *, int, int));
hide void
depca_wrcsr(sc, port, val)
struct lance_softc *sc;
u_int16_t port, val;
{
struct depca_softc *lesc = (struct depca_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
bus_space_write_2(iot, ioh, DEPCA_RAP, port);
bus_space_write_2(iot, ioh, DEPCA_RDP, val);
}
hide u_int16_t
depca_rdcsr(sc, port)
struct lance_softc *sc;
u_int16_t port;
{
struct depca_softc *lesc = (struct depca_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
u_int16_t val;
bus_space_write_2(iot, ioh, DEPCA_RAP, port);
val = bus_space_read_2(iot, ioh, DEPCA_RDP);
return (val);
}
int
depca_readprom(iot, ioh, laddr)
bus_space_tag_t iot;
bus_space_handle_t ioh;
u_int8_t *laddr;
{
int port, i;
/*
* Extract the physical MAC address from the ROM.
*
* The address PROM is 32 bytes wide, and we access it through
* a single I/O port. On each read, it rotates to the next
* position. We find the ethernet address by looking for a
* particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff,
* 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the
* ethernet address and a checksum).
*
* It appears that the PROM can be at one of two locations, so
* we just try both.
*/
port = DEPCA_ADP;
for (i = 0; i < 32; i++)
if (bus_space_read_1(iot, ioh, port) == 0xff &&
bus_space_read_1(iot, ioh, port) == 0x00 &&
bus_space_read_1(iot, ioh, port) == 0x55 &&
bus_space_read_1(iot, ioh, port) == 0xaa &&
bus_space_read_1(iot, ioh, port) == 0xff &&
bus_space_read_1(iot, ioh, port) == 0x00 &&
bus_space_read_1(iot, ioh, port) == 0x55 &&
bus_space_read_1(iot, ioh, port) == 0xaa)
goto found;
port = DEPCA_ADP + 1;
for (i = 0; i < 32; i++)
if (bus_space_read_1(iot, ioh, port) == 0xff &&
bus_space_read_1(iot, ioh, port) == 0x00 &&
bus_space_read_1(iot, ioh, port) == 0x55 &&
bus_space_read_1(iot, ioh, port) == 0xaa &&
bus_space_read_1(iot, ioh, port) == 0xff &&
bus_space_read_1(iot, ioh, port) == 0x00 &&
bus_space_read_1(iot, ioh, port) == 0x55 &&
bus_space_read_1(iot, ioh, port) == 0xaa)
goto found;
printf("depca: address not found\n");
return (-1);
found:
if (laddr) {
for (i = 0; i < 6; i++)
laddr[i] = bus_space_read_1(iot, ioh, port);
}
#if 0
sum =
(laddr[0] << 2) +
(laddr[1] << 10) +
(laddr[2] << 1) +
(laddr[3] << 9) +
(laddr[4] << 0) +
(laddr[5] << 8);
sum = (sum & 0xffff) + (sum >> 16);
sum = (sum & 0xffff) + (sum >> 16);
rom_sum = bus_space_read_1(iot, ioh, port);
rom_sum |= bus_space_read_1(iot, ioh, port) << 8;
if (sum != rom_sum) {
printf("depca: checksum mismatch; calculated %04x != read %04x",
sum, rom_sum);
return (-1);
}
#endif
return (0);
}
int
depca_isa_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
bus_space_handle_t memh;
int rv = 0;
/* Disallow impossible i/o address. */
if (ia->ia_iobase != 0x200 && ia->ia_iobase != 0x300)
return (0);
/* Map i/o space. */
if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh))
return 0;
if (ia->ia_maddr == MADDRUNK ||
(ia->ia_msize != 32*1024 && ia->ia_msize != 64*1024))
goto bad;
/* Map card RAM. */
if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &memh))
goto bad;
/* Just needed to check mapability; don't need it anymore. */
bus_space_unmap(ia->ia_memt, memh, ia->ia_msize);
/* Stop the LANCE chip and put it in a known state. */
bus_space_write_2(iot, ioh, DEPCA_RAP, LE_CSR0);
bus_space_write_2(iot, ioh, DEPCA_RDP, LE_C0_STOP);
delay(100);
bus_space_write_2(iot, ioh, DEPCA_RAP, LE_CSR0);
if (bus_space_read_2(iot, ioh, DEPCA_RDP) != LE_C0_STOP)
goto bad;
bus_space_write_2(iot, ioh, DEPCA_RAP, LE_CSR3);
bus_space_write_2(iot, ioh, DEPCA_RDP, LE_C3_ACON);
bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM);
if (depca_readprom(iot, ioh, 0))
goto bad;
ia->ia_iosize = 16;
rv = 1;
bad:
bus_space_unmap(iot, ioh, 16);
return (rv);
}
void
depca_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
printf("\n");
config_found(self, aux, 0);
}
int
le_depca_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
return (1);
}
void
le_depca_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct depca_softc *lesc = (void *)self;
struct lance_softc *sc = &lesc->sc_am7990.lsc;
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_tag_t memt = ia->ia_memt;
bus_space_handle_t ioh, memh;
u_char val;
int i;
printf("\n");
if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh))
panic("%s: can't map io", self->dv_xname);
/* Map shared memory. */
if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh))
panic("%s: can't map mem space", self->dv_xname);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
lesc->sc_memt = memt;
lesc->sc_memh = memh;
if (depca_readprom(iot, ioh, sc->sc_enaddr)) {
printf("%s: can't read PROM\n", self->dv_xname);
return;
}
bus_space_write_1(iot, ioh, DEPCA_CSR,
DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE
| (ia->ia_msize == 32*1024 ? DEPCA_CSR_LOW32K : 0));
val = 0xff;
for (;;) {
bus_space_set_region_1(memt, memh, 0, val,
ia->ia_msize);
for (i = 0; i < ia->ia_msize; i++)
if (bus_space_read_1(memt, memh, 1) != val) {
printf("%s: failed to clear memory\n",
sc->sc_dev.dv_xname);
return;
}
if (val == 0x00)
break;
val -= 0x55;
}
sc->sc_conf3 = LE_C3_ACON;
sc->sc_mem = 0; /* Not used. */
sc->sc_addr = 0;
sc->sc_memsize = ia->ia_msize;
sc->sc_copytodesc = depca_copytobuf;
sc->sc_copyfromdesc = depca_copyfrombuf;
sc->sc_copytobuf = depca_copytobuf;
sc->sc_copyfrombuf = depca_copyfrombuf;
sc->sc_zerobuf = depca_zerobuf;
sc->sc_rdcsr = depca_rdcsr;
sc->sc_wrcsr = depca_wrcsr;
sc->sc_hwinit = NULL;
printf("%s", sc->sc_dev.dv_xname);
am7990_config(&lesc->sc_am7990);
lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, depca_intredge, sc);
}
/*
* Controller interrupt.
*/
int
depca_intredge(arg)
void *arg;
{
if (am7990_intr(arg) == 0)
return (0);
for (;;)
if (am7990_intr(arg) == 0)
return (1);
}
/*
* DEPCA shared memory access functions.
*/
void
depca_copytobuf(sc, from, boff, len)
struct lance_softc *sc;
void *from;
int boff, len;
{
struct depca_softc *lesc = (struct depca_softc *)sc;
bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff,
from, len);
}
void
depca_copyfrombuf(sc, to, boff, len)
struct lance_softc *sc;
void *to;
int boff, len;
{
struct depca_softc *lesc = (struct depca_softc *)sc;
bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff,
to, len);
}
void
depca_zerobuf(sc, boff, len)
struct lance_softc *sc;
int boff, len;
{
struct depca_softc *lesc = (struct depca_softc *)sc;
#if 0 /* XXX !! */
bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff,
0x00, len);
#else
for (; len != 0; boff++, len--)
bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00);
#endif
}