NetBSD-5.0.2/sys/dev/ic/depca.c
/* $NetBSD: depca.c,v 1.17 2008/04/28 20:23:49 martin Exp $ */
/*-
* Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and 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.
*
* 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) 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: depca.c,v 1.17 2008/04/28 20:23:49 martin Exp $");
#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>
#include <sys/cpu.h>
#include <sys/intr.h>
#include <sys/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>
#include <dev/ic/depcareg.h>
#include <dev/ic/depcavar.h>
struct le_depca_softc {
struct am7990_softc sc_am7990; /* glue to MI code */
void *sc_ih;
};
int le_depca_match(device_t, cfdata_t, void *);
void le_depca_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(le_depca, sizeof(struct le_depca_softc),
le_depca_match, le_depca_attach, NULL, NULL);
void depca_copytobuf(struct lance_softc *, void *, int, int);
void depca_copyfrombuf(struct lance_softc *, void *, int, int);
void depca_zerobuf(struct lance_softc *, int, int);
struct depca_attach_args {
const char *da_name;
};
int depca_print(void *, const char *);
void
depca_attach(struct depca_softc *sc)
{
struct depca_attach_args da;
da.da_name = "le";
(void)config_found(sc->sc_dev, &da, depca_print);
}
int
depca_print(void *aux, const char *pnp)
{
struct depca_attach_args *da = aux;
if (pnp)
aprint_normal("%s at %s", da->da_name, pnp);
return (UNCONF);
}
void
depca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port);
bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val);
}
uint16_t
depca_rdcsr(struct lance_softc *sc, uint16_t port)
{
struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port);
return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP));
}
int
depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_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;
aprint_error("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) {
aprint_error("depca: checksum mismatch; "
"calculated %04x != read %04x", sum, rom_sum);
return (-1);
}
#endif
return (0);
}
int
le_depca_match(device_t parent, cfdata_t cf, void *aux)
{
struct depca_attach_args *da = aux;
return (strcmp(da->da_name, cf->cf_name) == 0);
}
void
le_depca_attach(device_t parent, device_t self, void *aux)
{
struct depca_softc *dsc = device_private(parent);
struct le_depca_softc *lesc = device_private(self);
struct lance_softc *sc = &lesc->sc_am7990.lsc;
uint8_t val;
int i;
sc->sc_dev = self;
aprint_error("\n");
/* I/O and memory spaces already mapped. */
if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) {
aprint_error_dev(self, "can't read PROM\n");
return;
}
bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR,
DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE |
(dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0));
val = 0xff;
for (;;) {
uint8_t cv;
bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val,
dsc->sc_memsize);
for (i = 0; i < dsc->sc_memsize; i++) {
cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i);
if (cv != val) {
aprint_error_dev(self,
"failed to clear memory at %d "
"(0x%02x != 0x%02x)\n",
i, cv, val);
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 = dsc->sc_memsize;
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;
aprint_error("%s", device_xname(self));
am7990_config(&lesc->sc_am7990);
lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc);
}
/*
* Controller interrupt.
*/
int
depca_intredge(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(struct lance_softc *sc, void *from, int boff, int len)
{
struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff,
from, len);
}
void
depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len)
{
struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff,
to, len);
}
void
depca_zerobuf(struct lance_softc *sc, int boff, int len)
{
struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff,
0x00, len);
}