sparc/obio bus front-end to the i82586 driver.
This commit is contained in:
pk
parent
8bc346d14a
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/* $NetBSD: if_ie_obio.c,v 1.1 1998/01/25 19:50:50 pk Exp $ */
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/*-
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* Copyright (c) 1997 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 Paul Kranenburg.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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) 1995 Charles D. Cranor
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* All rights reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Sparc OBIO front-end for the Intel 82586 Ethernet driver
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*
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* Converted to SUN ie driver by Charles D. Cranor,
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* October 1994, January 1995.
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*/
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/*
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* The i82586 is a very painful chip, found in sun3's, sun-4/100's
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* sun-4/200's, and VME based suns. The byte order is all wrong for a
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* SUN, making life difficult. Programming this chip is mostly the same,
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* but certain details differ from system to system. This driver is
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* written so that different "ie" interfaces can be controled by the same
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* driver.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/malloc.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_types.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_ether.h>
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#include <vm/vm.h>
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <machine/pmap.h>
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#include <machine/bus.h>
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#define _NEW_I82586 /* remove after all old drivers are converted */
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#include <dev/ic/i82586reg.h>
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#include <dev/ic/i82586var.h>
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/*
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* the on-board interface
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*/
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struct ieob {
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u_char obctrl;
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};
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#define IEOB_NORSET 0x80 /* don't reset the board */
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#define IEOB_ONAIR 0x40 /* put us on the air */
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#define IEOB_ATTEN 0x20 /* attention! */
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#define IEOB_IENAB 0x10 /* interrupt enable */
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#define IEOB_XXXXX 0x08 /* free bit */
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#define IEOB_XCVRL2 0x04 /* level 2 transceiver? */
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#define IEOB_BUSERR 0x02 /* bus error */
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#define IEOB_INT 0x01 /* interrupt */
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#define IEOB_ADBASE 0xff000000 /* KVA base addr of 24 bit address space */
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static void ie_obreset __P((struct ie_softc *, int));
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static void ie_obattend __P((struct ie_softc *));
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static void ie_obrun __P((struct ie_softc *));
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vm_map_t ie_map; /* XXX - needs change */
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int ie_obio_match __P((struct device *, struct cfdata *, void *));
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void ie_obio_attach __P((struct device *, struct device *, void *));
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struct cfattach ie_obio_ca = {
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sizeof(struct ie_softc), ie_obio_match, ie_obio_attach
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};
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/* Supported media */
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static int media[] = {
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IFM_ETHER | IFM_10_2,
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};
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#define NMEDIA (sizeof(media) / sizeof(media[0]))
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/*
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* OBIO ie support routines
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*/
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void
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ie_obreset(sc, what)
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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(100); /* XXX could be shorter? */
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ieo->obctrl = IEOB_NORSET;
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}
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void
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ie_obattend(sc)
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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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void
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ie_obrun(sc)
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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_ONAIR|IEOB_IENAB|IEOB_NORSET);
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}
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void ie_obio_memcopyin __P((struct ie_softc *, void *, int, size_t));
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void ie_obio_memcopyout __P((struct ie_softc *, const void *, int, size_t));
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/*
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* Copy board memory to kernel.
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*/
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void
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ie_obio_memcopyin(sc, p, offset, size)
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struct ie_softc *sc;
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void *p;
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int offset;
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size_t size;
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{
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void *addr = (void *)((u_long)sc->bh + offset);/*XXX - not MI!*/
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wcopy(addr, p, size);
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}
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/*
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* Copy from kernel space to naord memory.
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*/
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void
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ie_obio_memcopyout(sc, p, offset, size)
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struct ie_softc *sc;
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const void *p;
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int offset;
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size_t size;
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{
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void *addr = (void *)((u_long)sc->bh + offset);/*XXX - not MI!*/
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wcopy(p, addr, size);
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}
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/* read a 16-bit value at BH offset */
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u_int16_t ie_obio_read16 __P((struct ie_softc *, int offset));
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/* write a 16-bit value at BH offset */
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void ie_obio_write16 __P((struct ie_softc *, int offset, u_int16_t value));
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void ie_obio_write24 __P((struct ie_softc *, int offset, int addr));
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u_int16_t
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ie_obio_read16(sc, offset)
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struct ie_softc *sc;
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int offset;
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{
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u_int16_t v = bus_space_read_2(sc->bt, sc->bh, offset);
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return (((v&0xff)<<8) | ((v>>8)&0xff));
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}
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void
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ie_obio_write16(sc, offset, v)
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struct ie_softc *sc;
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int offset;
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u_int16_t v;
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{
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v = (((v&0xff)<<8) | ((v>>8)&0xff));
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bus_space_write_2(sc->bt, sc->bh, offset, v);
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}
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void
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ie_obio_write24(sc, offset, addr)
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struct ie_softc *sc;
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int offset;
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int addr;
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{
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u_int32_t v;
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u_char *t = (u_char *)&v, *f = (u_char *)&addr;
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t[0] = f[3]; t[1] = f[2]; t[2] = f[1]; t[3] = 0;
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bus_space_write_4(sc->bt, sc->bh, offset, v);
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}
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int
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ie_obio_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct confargs *ca = aux;
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struct romaux *ra = &ca->ca_ra;
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if (strcmp(cf->cf_driver->cd_name, ra->ra_name)) /* correct name? */
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return (0);
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switch (ca->ca_bustype) {
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default:
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return (0);
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case BUS_OBIO:
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if (probeget(ra->ra_vaddr, 1) != -1)
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return (1);
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break;
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}
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return (0);
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}
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void
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ie_obio_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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u_int8_t myaddr[ETHER_ADDR_LEN];
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extern void myetheraddr(u_char *); /* should be elsewhere */
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struct ie_softc *sc = (void *) self;
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struct confargs *ca = aux;
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struct intrhand *ih;
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register struct bootpath *bp;
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volatile struct ieob *ieo;
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vm_offset_t pa;
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sc->bt = 0;
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sc->hwreset = ie_obreset;
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sc->chan_attn = ie_obattend;
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sc->hwinit = ie_obrun;
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sc->memcopyout = ie_obio_memcopyout;
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sc->memcopyin = ie_obio_memcopyin;
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sc->ie_bus_read16 = ie_obio_read16;
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sc->ie_bus_write16 = ie_obio_write16;
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sc->ie_bus_write24 = ie_obio_write24;
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sc->sc_msize = 65536; /* XXX */
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sc->sc_reg = mapiodev(ca->ca_ra.ra_reg, 0, sizeof(struct ieob));
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ieo = (volatile struct ieob *) sc->sc_reg;
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/*
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* the rest of the IE_OBIO case needs to be cleaned up
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* XXX-should provide bus support for 24-bit devices..
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*/
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ie_map = vm_map_create(pmap_kernel(), (vm_offset_t)IEOB_ADBASE,
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(vm_offset_t)IEOB_ADBASE + sc->sc_msize, 1);
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if (ie_map == NULL)
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panic("ie_map");
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sc->sc_maddr = (caddr_t) kmem_alloc(ie_map, sc->sc_msize);
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if (sc->sc_maddr == NULL)
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panic("ie kmem_alloc");
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sc->bh = (bus_space_handle_t)(sc->sc_maddr);
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kvm_uncache(sc->sc_maddr, sc->sc_msize >> PGSHIFT);
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if (((u_long)sc->sc_maddr & ~(NBPG-1)) != (u_long)sc->sc_maddr)
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panic("unaligned dvmamalloc breaks");
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sc->sc_iobase = (caddr_t)IEOB_ADBASE; /* 24 bit base addr */
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wzero(sc->sc_maddr, sc->sc_msize);
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/* Map iscp at location zero */
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sc->iscp = (int)sc->bh;
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/* scb follows iscp */
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sc->scb = IE_ISCP_SZ;
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ie_obio_write16(sc, IE_ISCP_SCB((u_long)sc->iscp), sc->scb);
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ie_obio_write24(sc, IE_ISCP_BASE((u_long)sc->iscp),
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(u_long)IEOB_ADBASE - (u_long)sc->bh);
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ie_obio_write24(sc, IE_SCP_ISCP((u_long)sc->scp),
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(u_long)IEOB_ADBASE - (u_long)sc->iscp);
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/*
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* SCP: the scp must appear at KVA IEOB_ADBASE. The
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* ROM seems to have page up there, but I'm not sure all
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* ROMs will have it there. Also, I'm not sure if that
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* page is on some free list somewhere or not. Let's
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* map the first page of the buffer we just allocated
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* to IEOB_ADBASE to be safe.
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*/
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pa = pmap_extract(pmap_kernel(), (vm_offset_t)sc->sc_maddr);
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if (pa == 0)
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panic("ie pmap_extract");
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pmap_enter(pmap_kernel(), trunc_page(IEOB_ADBASE+IE_SCP_ADDR),
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(vm_offset_t)pa | PMAP_NC /*| PMAP_IOC*/,
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VM_PROT_READ | VM_PROT_WRITE, 1);
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sc->scp = IEOB_ADBASE + IE_SCP_ADDR;
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/*
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* Rest of first page is unused (wasted!); rest of ram
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* for buffers.
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*/
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sc->buf_area = NBPG;
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sc->buf_area_sz = sc->sc_msize - NBPG;
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myetheraddr(myaddr);
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i82586_attach(sc, "onboard", myaddr, media, NMEDIA, media[0]);
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ih = malloc(sizeof *ih, M_DEVBUF, M_NOWAIT);
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if (ih == NULL)
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panic("ie_obio: can't malloc interrupt handler");
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ih->ih_fun = i82586_intr;
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ih->ih_arg = sc;
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intr_establish(ca->ca_ra.ra_intr[0].int_pri, ih);
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bp = ca->ca_ra.ra_bp;
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if (bp != NULL && strcmp(bp->name, "ie") == 0 &&
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sc->sc_dev.dv_unit == bp->val[1])
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bp->dev = &sc->sc_dev;
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}
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