199 lines
5.2 KiB
C
199 lines
5.2 KiB
C
/* $NetBSD: if_ie_obio.c,v 1.25 2008/06/28 12:13:38 tsutsui Exp $ */
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/*-
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* Copyright (c) 1996 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 Gordon W. Ross.
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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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* Machine-dependent glue for the Intel Ethernet (ie) driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_ie_obio.c,v 1.25 2008/06/28 12:13:38 tsutsui Exp $");
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#include <netinet/if_inarp.h>
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#endif
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <machine/dvma.h>
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#include <machine/idprom.h>
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#include <machine/vmparam.h>
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#include "i82586.h"
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#include "if_iereg.h"
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#include "if_ievar.h"
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static void ie_obreset(struct ie_softc *);
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static void ie_obattend(struct ie_softc *);
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static void ie_obrun(struct ie_softc *);
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/*
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* New-style autoconfig attachment
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*/
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static int ie_obio_match(device_t, cfdata_t, void *);
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static void ie_obio_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(ie_obio, sizeof(struct ie_softc),
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ie_obio_match, ie_obio_attach, NULL, NULL);
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static int
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ie_obio_match(device_t parent, cfdata_t cf, void *args)
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{
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struct confargs *ca = args;
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/* Make sure there is something there... */
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if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1)
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return 0;
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/* Default interrupt priority. */
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if (ca->ca_intpri == -1)
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ca->ca_intpri = 3;
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return 1;
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}
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void
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ie_obio_attach(device_t parent, device_t self, void *args)
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{
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struct ie_softc *sc = device_private(self);
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struct confargs *ca = args;
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sc->sc_dev = self;
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sc->hard_type = IE_OBIO;
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sc->reset_586 = ie_obreset;
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sc->chan_attn = ie_obattend;
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sc->run_586 = ie_obrun;
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sc->sc_memcpy = memcpy;
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sc->sc_memset = memset;
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/* Map in the control registers. */
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sc->sc_reg = bus_mapin(ca->ca_bustype,
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ca->ca_paddr, sizeof(struct ieob));
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/*
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* The on-board "ie" is wired-up such that its
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* memory access goes to the high 16 megabytes
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* of the on-board memory space (on-board DVMA).
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*/
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sc->sc_iobase = (void *)DVMA_OBIO_SLAVE_BASE;
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/*
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* The on-board "ie" just uses main memory, so
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* we can choose how much memory to give it.
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* XXX: Would like to use less than 64K...
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*/
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sc->sc_msize = 0x8000; /* MEMSIZE 32K */
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/* Allocate "shared" memory (in DVMA space). */
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sc->sc_maddr = dvma_malloc(sc->sc_msize);
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if (sc->sc_maddr == NULL)
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panic(": not enough dvma space");
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/*
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* Set the System Configuration Pointer (SCP).
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* Its location is system-dependent because the
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* i82586 reads it from a fixed physical address.
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* On this hardware, the i82586 address maps to
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* a 24-bit offset in on-board DVMA space. The
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* SCP happens to fall in a page used by the
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* PROM monitor, which the PROM knows about.
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*/
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sc->scp = (volatile void *)((char *)sc->sc_iobase + IE_SCP_ADDR);
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/*
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* The rest of ram is used for buffers.
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*/
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sc->buf_area = sc->sc_maddr;
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sc->buf_area_sz = sc->sc_msize;
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/* Install interrupt handler. */
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isr_add_autovect(ie_intr, sc, ca->ca_intpri);
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/* Set the ethernet address. */
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idprom_etheraddr(sc->sc_addr);
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/* Do machine-independent parts of attach. */
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ie_attach(sc);
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}
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/*
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* onboard ie support
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*/
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/* Whack the "channel attetion" line. */
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void
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ie_obattend(struct ie_softc *sc)
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{
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volatile struct ieob *ieo = (struct ieob *)sc->sc_reg;
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ieo->obctrl |= IEOB_ATTEN; /* flag! */
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ieo->obctrl &= ~IEOB_ATTEN; /* down. */
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}
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/*
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* This is called during driver attach.
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* Reset and initialize.
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*/
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void
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ie_obreset(struct ie_softc *sc)
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{
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volatile struct ieob *ieo = (struct ieob *)sc->sc_reg;
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ieo->obctrl = 0;
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delay(20);
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ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB);
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}
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/*
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* This is called at the end of ieinit().
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* optional.
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*/
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void
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ie_obrun(struct ie_softc *sc)
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{
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/* do it all in reset */
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}
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