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305 lines
8.8 KiB
C
305 lines
8.8 KiB
C
/* $NetBSD: if_le.c,v 1.37 2010/12/14 23:38:30 matt Exp $ */
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/*-
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* Copyright (c) 1997, 1998 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: if_le.c,v 1.37 2010/12/14 23:38:30 matt Exp $");
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <uvm/uvm_extern.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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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#endif
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#include <machine/nexus.h>
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#include <machine/scb.h>
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#include <machine/mainbus.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 "ioconf.h"
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#define LE_VEC 0xd4 /* Interrupt vector on 3300/3400 */
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#define LE_CSR 0x20084400
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#define LE_ROM 0x20084200
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#define LE_RAM 0x20120000
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struct le_softc {
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struct am7990_softc sc_am7990; /* Must be first */
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struct evcnt sc_intrcnt;
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volatile uint16_t *sc_rap;
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volatile uint16_t *sc_rdp;
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};
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static int le_mainbus_match(device_t, cfdata_t, void *);
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static void le_mainbus_attach(device_t, device_t, void *);
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static void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
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static uint16_t lerdcsr(struct lance_softc *, uint16_t);
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static void lance_copytobuf_gap2(struct lance_softc *, void *, int, int);
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static void lance_copyfrombuf_gap2(struct lance_softc *, void *, int, int);
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static void lance_zerobuf_gap2(struct lance_softc *, int, int);
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CFATTACH_DECL_NEW(le_mainbus, sizeof(struct le_softc),
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le_mainbus_match, le_mainbus_attach, NULL, NULL);
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void
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lewrcsr(struct lance_softc *ls, uint16_t port, uint16_t val)
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{
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struct le_softc * const sc = (void *)ls;
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*sc->sc_rap = port;
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*sc->sc_rdp = val;
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}
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uint16_t
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lerdcsr(struct lance_softc *ls, uint16_t port)
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{
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struct le_softc * const sc = (void *)ls;
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*sc->sc_rap = port;
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return *sc->sc_rdp;
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}
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int
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le_mainbus_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct mainbus_attach_args * const ma = aux;
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int found;
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vaddr_t va;
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if (strcmp("lance", ma->ma_type))
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return 0;
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va = vax_map_physmem(LE_CSR, 1);
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found = (badaddr((void *)va, 2) == 0);
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vax_unmap_physmem(va, 1);
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return found;
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}
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void
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le_mainbus_attach(device_t parent, device_t self, void *aux)
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{
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struct le_softc * const sc = device_private(self);
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int *lance_addr;
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int i, vec, br;
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sc->sc_am7990.lsc.sc_dev = self;
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sc->sc_rdp = (uint16_t *)vax_map_physmem(LE_CSR, 1);
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sc->sc_rap = sc->sc_rdp + 2;
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/*
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* Set interrupt vector, by forcing an interrupt.
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*/
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scb_vecref(0, 0); /* Clear vector ref */
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*sc->sc_rap = LE_CSR0;
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*sc->sc_rdp = LE_C0_STOP;
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DELAY(100);
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*sc->sc_rdp = LE_C0_INIT|LE_C0_INEA;
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DELAY(100000);
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i = scb_vecref(&vec, &br);
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if (i == 0 || vec == 0)
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return;
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scb_vecalloc(vec, (void (*)(void *))am7990_intr, sc,
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SCB_ISTACK, &sc->sc_intrcnt);
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evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
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device_xname(self), "intr");
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aprint_normal(": vec %o ipl %x\n%s", vec, br, device_xname(self));
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/*
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* MD functions.
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*/
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sc->sc_am7990.lsc.sc_rdcsr = lerdcsr;
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sc->sc_am7990.lsc.sc_wrcsr = lewrcsr;
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sc->sc_am7990.lsc.sc_nocarrier = NULL;
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sc->sc_am7990.lsc.sc_mem =
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(void *)uvm_km_alloc(kernel_map, (128 * 1024), 0, UVM_KMF_VAONLY);
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if (sc->sc_am7990.lsc.sc_mem == 0)
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return;
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ioaccess((vaddr_t)sc->sc_am7990.lsc.sc_mem, LE_RAM,
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(128 * 1024) >> VAX_PGSHIFT);
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sc->sc_am7990.lsc.sc_addr = 0;
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sc->sc_am7990.lsc.sc_memsize = (64 * 1024);
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sc->sc_am7990.lsc.sc_copytodesc = lance_copytobuf_gap2;
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sc->sc_am7990.lsc.sc_copyfromdesc = lance_copyfrombuf_gap2;
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sc->sc_am7990.lsc.sc_copytobuf = lance_copytobuf_gap2;
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sc->sc_am7990.lsc.sc_copyfrombuf = lance_copyfrombuf_gap2;
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sc->sc_am7990.lsc.sc_zerobuf = lance_zerobuf_gap2;
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/*
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* Get the ethernet address out of rom
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*/
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lance_addr = (int *)vax_map_physmem(LE_ROM, 1);
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for (i = 0; i < 6; i++)
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sc->sc_am7990.lsc.sc_enaddr[i] = (u_char)lance_addr[i];
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vax_unmap_physmem((vaddr_t)lance_addr, 1);
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memcpy(sc->sc_am7990.lsc.sc_ethercom.ec_if.if_xname, device_xname(self),
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IFNAMSIZ);
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am7990_config(&sc->sc_am7990);
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}
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/*
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* gap2: two bytes of data followed by two bytes of pad.
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*
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* Buffers must be 4-byte aligned. The code doesn't worry about
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* doing an extra byte.
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*/
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void
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lance_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len)
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{
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volatile void *buf = sc->sc_mem;
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char *from = fromv;
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volatile uint16_t *bptr;
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if (boff & 0x1) {
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/* handle unaligned first byte */
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bptr = ((volatile uint16_t *)buf) + (boff - 1);
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*bptr = (*from++ << 8) | (*bptr & 0xff);
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bptr += 2;
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len--;
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} else
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bptr = ((volatile uint16_t *)buf) + boff;
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while (len > 1) {
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*bptr = (from[1] << 8) | (from[0] & 0xff);
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bptr += 2;
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from += 2;
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len -= 2;
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}
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if (len == 1)
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*bptr = (uint16_t)*from;
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}
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void
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lance_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len)
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{
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volatile void *buf = sc->sc_mem;
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char *to = tov;
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volatile uint16_t *bptr;
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uint16_t tmp;
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if (boff & 0x1) {
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/* handle unaligned first byte */
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bptr = ((volatile uint16_t *)buf) + (boff - 1);
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*to++ = (*bptr >> 8) & 0xff;
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bptr += 2;
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len--;
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} else
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bptr = ((volatile uint16_t *)buf) + boff;
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while (len > 1) {
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tmp = *bptr;
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*to++ = tmp & 0xff;
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*to++ = (tmp >> 8) & 0xff;
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bptr += 2;
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len -= 2;
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}
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if (len == 1)
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*to = *bptr & 0xff;
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}
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void
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lance_zerobuf_gap2(struct lance_softc *sc, int boff, int len)
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{
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volatile void *buf = sc->sc_mem;
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volatile uint16_t *bptr;
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if ((unsigned int)boff & 0x1) {
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bptr = ((volatile uint16_t *)buf) + (boff - 1);
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*bptr &= 0xff;
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bptr += 2;
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len--;
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} else
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bptr = ((volatile uint16_t *)buf) + boff;
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while (len > 0) {
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*bptr = 0;
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bptr += 2;
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len -= 2;
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}
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}
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