/* $OpenBSD: if_le_isa.c,v 1.19 2007/06/17 21:20:47 jasper Exp $ */
/* $NetBSD: if_le_isa.c,v 1.2 1996/05/12 23:52:56 mycroft Exp $ */
/*-
* 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. 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 "bpfilter.h"
#include "isadma.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_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <machine/cpu.h>
#include <machine/intr.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
#include <dev/isa/if_levar.h>
static char *card_type[] =
{ "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" };
int le_isa_probe(struct device *, void *, void *);
void le_isa_attach(struct device *, struct device *, void *);
struct cfattach le_isa_ca = {
sizeof(struct le_softc), le_isa_probe, le_isa_attach
};
int depca_isa_probe(struct le_softc *, struct isa_attach_args *);
int ne2100_isa_probe(struct le_softc *, struct isa_attach_args *);
int bicc_isa_probe(struct le_softc *, struct isa_attach_args *);
int lance_isa_probe(struct am7990_softc *);
int
le_isa_probe(struct device *parent, void *match, void *aux)
{
struct le_softc *lesc = match;
struct isa_attach_args *ia = aux;
u_int8_t bogusether[ETHER_ADDR_LEN] = { 255, 255, 255, 255, 255, 255 };
#if NISADMA == 0
if (ia->ia_drq != DRQUNK) {
printf("cannot support dma lance devices\n");
return 0;
}
#endif
if (bicc_isa_probe(lesc, ia) == 0 && ne2100_isa_probe(lesc, ia) == 0 &&
depca_isa_probe(lesc, ia) == 0)
return (0);
if (bcmp(lesc->sc_am7990.sc_arpcom.ac_enaddr, bogusether,
sizeof(bogusether)) == 0)
return (0);
return (1);
}
int
depca_isa_probe(struct le_softc *lesc, struct isa_attach_args *ia)
{
struct am7990_softc *sc = &lesc->sc_am7990;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
int iosize = 16;
int port;
#if 0
u_long sum, rom_sum;
u_char x;
#endif
int i;
if (bus_space_map(iot, ia->ia_iobase, iosize, 0, &ioh))
return (0);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
lesc->sc_rap = DEPCA_RAP;
lesc->sc_rdp = DEPCA_RDP;
lesc->sc_card = DEPCA;
if (lance_isa_probe(sc) == 0) {
bus_space_unmap(iot, ioh, iosize);
return 0;
}
bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM);
/*
* 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("%s: address not found\n", sc->sc_dev.dv_xname);
return 0;
found:
for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++)
sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, port);
#if 0
sum =
(sc->sc_arpcom.ac_enaddr[0] << 2) +
(sc->sc_arpcom.ac_enaddr[1] << 10) +
(sc->sc_arpcom.ac_enaddr[2] << 1) +
(sc->sc_arpcom.ac_enaddr[3] << 9) +
(sc->sc_arpcom.ac_enaddr[4] << 0) +
(sc->sc_arpcom.ac_enaddr[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("%s: checksum mismatch; calculated %04x != read %04x",
sc->sc_dev.dv_xname, sum, rom_sum);
bus_space_unmap(iot, ioh, iosize);
return 0;
}
#endif
bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_NORMAL);
ia->ia_iosize = iosize;
ia->ia_drq = DRQUNK;
bus_space_unmap(iot, ioh, ia->ia_iosize);
return 1;
}
int
ne2100_isa_probe(struct le_softc *lesc, struct isa_attach_args *ia)
{
struct am7990_softc *sc = &lesc->sc_am7990;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
int iosize = 24;
int i;
if (bus_space_map(iot, ia->ia_iobase, iosize, 0, &ioh))
return (0);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
lesc->sc_rap = NE2100_RAP;
lesc->sc_rdp = NE2100_RDP;
lesc->sc_card = NE2100;
if (lance_isa_probe(sc) == 0) {
bus_space_unmap(iot, ioh, iosize);
return 0;
}
/*
* Extract the physical MAC address from the ROM.
*/
for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++)
sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, i);
ia->ia_iosize = iosize;
bus_space_unmap(iot, ioh, ia->ia_iosize);
return 1;
}
int
bicc_isa_probe(struct le_softc *lesc, struct isa_attach_args *ia)
{
struct am7990_softc *sc = &lesc->sc_am7990;
bus_space_handle_t ioh;
bus_space_tag_t iot = ia->ia_iot;
int iosize = 16;
int i;
if (bus_space_map(iot, ia->ia_iobase, iosize, 0, &ioh))
return (0);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
lesc->sc_rap = BICC_RAP;
lesc->sc_rdp = BICC_RDP;
lesc->sc_card = BICC;
if (lance_isa_probe(sc) == 0) {
bus_space_unmap(iot, ioh, iosize);
return 0;
}
/*
* Extract the physical MAC address from the ROM.
*/
for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++)
sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, i * 2);
ia->ia_iosize = iosize;
bus_space_unmap(iot, ioh, ia->ia_iosize);
return 1;
}
/*
* Determine which chip is present on the card.
*/
int
lance_isa_probe(struct am7990_softc *sc)
{
/* Stop the LANCE chip and put it in a known state. */
le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP);
delay(100);
if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP)
return 0;
le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3);
return 1;
}
void
le_isa_attach(struct device *parent, struct device *self,
void *aux)
{
struct le_softc *lesc = (void *)self;
struct am7990_softc *sc = &lesc->sc_am7990;
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh))
panic("%s: could not map I/O-ports", sc->sc_dev.dv_xname);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
printf(": %s Ethernet\n", card_type[lesc->sc_card]);
if (lesc->sc_card == DEPCA) {
u_char *mem, val;
int i;
mem = sc->sc_mem = ISA_HOLE_VADDR(ia->ia_maddr);
val = 0xff;
for (;;) {
for (i = 0; i < ia->ia_msize; i++)
mem[i] = val;
for (i = 0; i < ia->ia_msize; i++)
if (mem[i] != 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_addr = 0;
sc->sc_memsize = ia->ia_msize;
} else {
sc->sc_mem = malloc(16384, M_DEVBUF, M_NOWAIT);
if (sc->sc_mem == 0) {
printf("%s: couldn't allocate memory for card\n",
sc->sc_dev.dv_xname);
return;
}
sc->sc_conf3 = 0;
sc->sc_addr = kvtop(sc->sc_mem);
sc->sc_memsize = 16384;
}
sc->sc_copytodesc = am7990_copytobuf_contig;
sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
sc->sc_copytobuf = am7990_copytobuf_contig;
sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
sc->sc_zerobuf = am7990_zerobuf_contig;
sc->sc_rdcsr = le_isa_rdcsr;
sc->sc_wrcsr = le_isa_wrcsr;
sc->sc_hwreset = NULL;
sc->sc_hwinit = NULL;
printf("%s", sc->sc_dev.dv_xname);
am7990_config(sc);
#if NISADMA > 0
if (ia->ia_drq != DRQUNK)
isadma_cascade(ia->ia_drq);
#endif
lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, le_isa_intredge, sc, sc->sc_dev.dv_xname);
}
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