347 lines
10 KiB
C
347 lines
10 KiB
C
/* $NetBSD: depca.c,v 1.17 2008/04/28 20:23:49 martin Exp $ */
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/*-
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* Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell and Rick Macklem.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_le.c 8.2 (Berkeley) 11/16/93
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: depca.c,v 1.17 2008/04/28 20:23:49 martin Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <sys/cpu.h>
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#include <sys/intr.h>
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#include <sys/bus.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/ic/lancereg.h>
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#include <dev/ic/lancevar.h>
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#include <dev/ic/depcareg.h>
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#include <dev/ic/depcavar.h>
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struct le_depca_softc {
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struct am7990_softc sc_am7990; /* glue to MI code */
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void *sc_ih;
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};
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int le_depca_match(device_t, cfdata_t, void *);
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void le_depca_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(le_depca, sizeof(struct le_depca_softc),
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le_depca_match, le_depca_attach, NULL, NULL);
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void depca_copytobuf(struct lance_softc *, void *, int, int);
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void depca_copyfrombuf(struct lance_softc *, void *, int, int);
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void depca_zerobuf(struct lance_softc *, int, int);
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struct depca_attach_args {
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const char *da_name;
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};
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int depca_print(void *, const char *);
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void
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depca_attach(struct depca_softc *sc)
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{
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struct depca_attach_args da;
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da.da_name = "le";
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(void)config_found(sc->sc_dev, &da, depca_print);
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}
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int
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depca_print(void *aux, const char *pnp)
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{
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struct depca_attach_args *da = aux;
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if (pnp)
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aprint_normal("%s at %s", da->da_name, pnp);
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return (UNCONF);
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}
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void
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depca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
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{
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struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
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bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port);
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bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val);
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}
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uint16_t
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depca_rdcsr(struct lance_softc *sc, uint16_t port)
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{
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struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
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bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port);
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return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP));
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}
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int
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depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *laddr)
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{
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int port, i;
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/*
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* Extract the physical MAC address from the ROM.
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*
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* The address PROM is 32 bytes wide, and we access it through
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* a single I/O port. On each read, it rotates to the next
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* position. We find the ethernet address by looking for a
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* particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff,
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* 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the
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* ethernet address and a checksum).
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*
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* It appears that the PROM can be at one of two locations, so
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* we just try both.
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*/
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port = DEPCA_ADP;
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for (i = 0; i < 32; i++)
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if (bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa &&
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bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa)
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goto found;
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port = DEPCA_ADP + 1;
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for (i = 0; i < 32; i++)
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if (bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa &&
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bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa)
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goto found;
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aprint_error("depca: address not found\n");
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return (-1);
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found:
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if (laddr) {
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for (i = 0; i < 6; i++)
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laddr[i] = bus_space_read_1(iot, ioh, port);
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}
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#if 0
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sum =
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(laddr[0] << 2) +
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(laddr[1] << 10) +
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(laddr[2] << 1) +
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(laddr[3] << 9) +
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(laddr[4] << 0) +
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(laddr[5] << 8);
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sum = (sum & 0xffff) + (sum >> 16);
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sum = (sum & 0xffff) + (sum >> 16);
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rom_sum = bus_space_read_1(iot, ioh, port);
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rom_sum |= bus_space_read_1(iot, ioh, port) << 8;
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if (sum != rom_sum) {
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aprint_error("depca: checksum mismatch; "
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"calculated %04x != read %04x", sum, rom_sum);
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return (-1);
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}
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#endif
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return (0);
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}
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int
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le_depca_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct depca_attach_args *da = aux;
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return (strcmp(da->da_name, cf->cf_name) == 0);
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}
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void
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le_depca_attach(device_t parent, device_t self, void *aux)
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{
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struct depca_softc *dsc = device_private(parent);
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struct le_depca_softc *lesc = device_private(self);
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struct lance_softc *sc = &lesc->sc_am7990.lsc;
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uint8_t val;
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int i;
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sc->sc_dev = self;
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aprint_error("\n");
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/* I/O and memory spaces already mapped. */
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if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) {
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aprint_error_dev(self, "can't read PROM\n");
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return;
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}
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bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR,
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DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE |
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(dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0));
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val = 0xff;
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for (;;) {
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uint8_t cv;
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bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val,
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dsc->sc_memsize);
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for (i = 0; i < dsc->sc_memsize; i++) {
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cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i);
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if (cv != val) {
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aprint_error_dev(self,
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"failed to clear memory at %d "
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"(0x%02x != 0x%02x)\n",
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i, cv, val);
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return;
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}
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}
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if (val == 0x00)
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break;
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val -= 0x55;
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}
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sc->sc_conf3 = LE_C3_ACON;
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sc->sc_mem = 0; /* Not used. */
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sc->sc_addr = 0;
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sc->sc_memsize = dsc->sc_memsize;
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sc->sc_copytodesc = depca_copytobuf;
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sc->sc_copyfromdesc = depca_copyfrombuf;
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sc->sc_copytobuf = depca_copytobuf;
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sc->sc_copyfrombuf = depca_copyfrombuf;
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sc->sc_zerobuf = depca_zerobuf;
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sc->sc_rdcsr = depca_rdcsr;
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sc->sc_wrcsr = depca_wrcsr;
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sc->sc_hwinit = NULL;
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aprint_error("%s", device_xname(self));
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am7990_config(&lesc->sc_am7990);
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lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc);
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}
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/*
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* Controller interrupt.
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*/
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int
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depca_intredge(void *arg)
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{
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if (am7990_intr(arg) == 0)
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return (0);
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for (;;)
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if (am7990_intr(arg) == 0)
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return (1);
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}
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/*
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* DEPCA shared memory access functions.
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*/
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void
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depca_copytobuf(struct lance_softc *sc, void *from, int boff, int len)
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{
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struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
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bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff,
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from, len);
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}
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void
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depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len)
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{
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struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
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bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff,
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to, len);
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}
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void
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depca_zerobuf(struct lance_softc *sc, int boff, int len)
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{
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struct depca_softc *dsc = device_private(device_parent(sc->sc_dev));
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bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff,
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0x00, len);
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}
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