2185bcc386
This work is based on code written by Scott D. Telford, the IBM Token Ring card attachment was written by Gregory McGarry. XXX this is still very experimental and development version; use at your XXX own risk
213 lines
6.0 KiB
C
213 lines
6.0 KiB
C
/* $NetBSD: if_tr_mca.c,v 1.1 2000/05/11 15:42:04 jdolecek Exp $ */
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/*_
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* Copyright (c) 1998, 1999 Gregory McGarry.
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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 Gregory McGarry <g.mcgarry@qut.edu.au>.
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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 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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/mca/mcareg.h>
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#include <dev/mca/mcavar.h>
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#include <dev/mca/mcadevs.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_ether.h>
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#include <dev/ic/tropicreg.h>
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#include <dev/ic/tropicvar.h>
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#ifdef DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x)
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#endif
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#define TR_PRI_IOADDR 0x0a20
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#define TR_ALT_IOADDR 0x0a24
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#define TR_PIOSIZE 4
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#define TR_MMIOSIZE 8192
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#define TR_MBPS_4 0
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#define TR_MBPS_16 1
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int tr_mca_probe __P((struct device *, struct cfdata *, void *));
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void tr_mca_attach __P((struct device *, struct device *, void *));
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struct cfattach tr_mca_ca = {
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sizeof(struct tr_softc), tr_mca_probe, tr_mca_attach
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};
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int
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tr_mca_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct mca_attach_args *ma = aux;
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switch (ma->ma_id) {
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case MCA_PRODUCT_ITR:
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return 1;
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}
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return 0;
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}
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void
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tr_mca_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct tr_softc *sc = (void *) self;
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struct mca_attach_args *ma = aux;
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bus_space_handle_t pioh, mmioh, sramh;
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int iobase, irq, sram_size, sram_addr, rom_addr;
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int pos2, pos3, pos4, pos5;
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pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
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pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
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pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
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pos5 = mca_conf_read(ma->ma_mc, ma->ma_slot, 5);
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/*
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* POS register 2: (adf pos0)
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*
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* 7 6 5 4 3 2 1 0
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* \___________/ \__ enable: 0=adapter disabled, 1=adapter enabled
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* \__________ RAM addr: pos2&0xfe
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*
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* POS register 3: (adf pos1)
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*
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* 7 6 5 4 3 2 1 0
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* | \___/ | | | \__ port address: 1=0x0a24-0x0a27, 0=0x0a20-0x0a23
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* | | \ / \____ speed: 0=4Mbps, 1=16Mbps
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* | | \_______ RAM size: 00=8kb, 01=16kb, 10=32kb, 11=64kb
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* | \____________ reserved: 010
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* \________________ irq component: 0=2, 1=3 (see also pos4)
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*
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* POS register 4: (adf pos2)
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*
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* 7 6 5 4 3 2 1 0
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* \___________/ \__ interrupt controller: 0=1st, 1=2nd
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* \__________ ROM address: pos4&0xfe
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*
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* POS register 5: (adf pos3)
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*
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* 7 6 5 4 3 2 1 0
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* | | \_____/
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* | | \_____ reserved: 0x0
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* | \__________ autosense: 0=off, 1=on
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* \____________ boot rom: 0=enabled, 1=disabled
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*/
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if (pos3 & 0x01)
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iobase = TR_ALT_IOADDR;
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else
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iobase = TR_PRI_IOADDR;
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irq = 2 + (pos3 >> 7) + ((pos4 & 0x01) << 3);
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if (irq == 2)
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irq = 9;
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sram_size = 8 << (((pos3 & 0x0c) >> 2) + 10);
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sram_addr = (pos2 & 0xfe) << 12;
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rom_addr = (pos4 & 0xfe) << 12;
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/* map the pio registers */
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if (bus_space_map(ma->ma_iot, iobase, TR_PIOSIZE, 0, &pioh)) {
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printf("%s: unable to map PIO space\n", sc->sc_dev.dv_xname);
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return;
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}
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/* map the mmio registers */
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if (bus_space_map(ma->ma_memt, rom_addr, TR_MMIOSIZE, 0, &mmioh)) {
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printf("%s: unable to map MMIO space\n", sc->sc_dev.dv_xname);
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return;
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}
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/* map the sram space */
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if (bus_space_map(ma->ma_memt, sram_addr, sram_size, 0, &sramh)) {
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printf("%s: unable to map SRAM space\n", sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_piot = ma->ma_iot;
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sc->sc_pioh = pioh;
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sc->sc_memt = ma->ma_memt;
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sc->sc_mmioh = mmioh;
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sc->sc_sramh = sramh;
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/* set ACA offset */
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sc->sc_aca = TR_ACA_OFFSET;
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sc->sc_memwinsz = sram_size;
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sc->sc_maddr = sram_addr;
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/*
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* Determine total RAM on adapter and decide how much to use.
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* XXX Since we don't use RAM paging, use sc_memwinsz for now.
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*/
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sc->sc_memsize = sc->sc_memwinsz;
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sc->sc_memreserved = 0;
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if (tr_reset(sc) != 0)
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return;
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/* XXX not implemented (yet) */
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sc->sc_mediastatus = NULL;
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sc->sc_mediachange = NULL;
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/* do generic attach */
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if (tr_attach(sc) != 0)
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return;
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/* establish interrupt handler */
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sc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, tr_intr, sc);
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if (sc->sc_ih == NULL)
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printf("%s: couldn't establish interrupt handler\n",
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sc->sc_dev.dv_xname);
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else
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printf("%s: interrupting at irq %d\n", sc->sc_dev.dv_xname, irq);
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}
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