248 lines
6.8 KiB
C
248 lines
6.8 KiB
C
/* $NetBSD: if_tra_mca.c,v 1.10 2008/04/28 20:23:53 martin Exp $ */
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/*-
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* Copyright (c) 2004 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 Jaromir Dolecek.
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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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* Driver for Tiara LANCard/E II and friends adapted from if_ate_mca.c
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* by Dave J. Barnes 2004.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_tra_mca.c,v 1.10 2008/04/28 20:23:53 martin Exp $");
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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/socket.h>
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#include <sys/syslog.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/bus.h>
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#include <sys/intr.h>
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#include <dev/ic/mb86950reg.h>
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#include <dev/ic/mb86950var.h>
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#include <dev/mca/mcavar.h>
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#include <dev/mca/mcadevs.h>
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int tiara_mca_match __P((struct device *, struct cfdata *, void *));
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void tiara_mca_attach __P((struct device *, struct device *, void *));
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#define TIARA_NPORTS 0x20 /* 32 */
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#define TIARA_PROM_ID 24 /* offset to mac addr stored in prom */
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struct tiara_softc {
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struct mb86950_softc sc_mb86950; /* real "mb86950" softc */
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/* MCA-specific goo. */
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void *sc_ih; /* interrupt cookie */
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};
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CFATTACH_DECL(tra_mca, sizeof(struct tiara_softc),
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tiara_mca_match, tiara_mca_attach, NULL, NULL);
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static const struct tiara_mca_product {
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u_int32_t tra_prodid; /* MCA product ID */
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const char *tra_name; /* device name */
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} tiara_mca_products[] = {
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{ MCA_PRODUCT_TIARA, "Tiara LANCard/E2"},
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{ MCA_PRODUCT_TIARA_TP, "Tiara LANCard/E2 TP"},
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{ MCA_PRODUCT_SMC3016, "SMC 3016/MC"},
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{ 0, NULL },
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};
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static const struct tiara_mca_product *tiara_mca_lookup __P((u_int32_t));
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static const struct tiara_mca_product *
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tiara_mca_lookup(id)
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u_int32_t id;
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{
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const struct tiara_mca_product *tra_p;
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for (tra_p = tiara_mca_products; tra_p->tra_name != NULL; tra_p++)
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if (id == tra_p->tra_prodid)
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return (tra_p);
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return (NULL);
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}
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int
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tiara_mca_match(struct device *parent, struct cfdata *match,
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void *aux)
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{
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struct mca_attach_args *ma = (struct mca_attach_args *) aux;
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if (tiara_mca_lookup(ma->ma_id) != NULL)
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return (1);
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return (0);
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}
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/* see POS diagrams below for explanation */
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static const int tiara_irq[] = {
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3, 4, 7, 9
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};
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static const int smc_iobase[] = {
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0x300, 0x340, 0x360, 0x1980, 0x2000, 0x5680, 0x5900, 0x8080
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};
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static const int smc_irq[] = {
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9, 10, 11, 15, 3, 5, 7, 4
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};
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void
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tiara_mca_attach(struct device *parent, struct device *self, void *aux)
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{
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struct tiara_softc *isc = device_private(self);
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struct mb86950_softc *sc = &isc->sc_mb86950;
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struct mca_attach_args *ma = aux;
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bus_space_tag_t iot = ma->ma_iot;
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bus_space_handle_t ioh;
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u_int8_t myea[ETHER_ADDR_LEN];
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int pos2;
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int iobase = 0, irq = 0;
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const struct tiara_mca_product *tra_p;
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pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
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tra_p = tiara_mca_lookup(ma->ma_id);
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switch (tra_p->tra_prodid) {
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case MCA_PRODUCT_TIARA:
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case MCA_PRODUCT_TIARA_TP:
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/*
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* POS register 2: (adf pos0)
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* 7 6 5 4 3 2 1 0
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* \_____/ \_/ \ \__ enable: 0=disabled, 1=enabled
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* \ \ \___ boot rom: 0=disabled, 1=enabled
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* \ \______ IRQ 00=3 01=4 10=7 11=9
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* \_________ Base I/O Port
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* 0000=0x1200 0001=0x1220 ... 1110=0x13c0 1111=0x13e0
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*
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* POS register 3: (adf pos1) not used
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* POS register 4: (adf pos2) not used
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*
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* POS register 5: (adf pos3) ignored
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*
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* 7 6 5 4 3 2 1 0
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* 1 1 0 X \____/
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* \____EPROM Address
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*/
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iobase = 0x1200 + ((pos2 & 0xf0) << 1);
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irq = tiara_irq[((pos2 & 0x0c) >> 2)];
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/* XXX SWAG for number pkts. */
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/* My Tiara LANCard has 128K memory ?!? */
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sc->txb_num_pkt = 4;
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sc->rxb_num_pkt = (65535 - 8192 - 4) / 64;
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/* XXX */
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break;
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case MCA_PRODUCT_SMC3016:
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/*
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* POS register 2: (adf pos0)
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* 7 6 5 4 3 2 1 0
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* \_____/ \___/ \__ enable: 0=disabled, 1=enabled
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* \ \_____ I/O Address (see ioaddr table)
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* \__________ IRQ (see irq table)
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*
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* POS register 3: (adf pos1) ignored
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* 7 6 5 4 3 2 1 0
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* X X X X \____/
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* \____EPROM Address (0000 = not used)
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*/
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iobase = smc_iobase[((pos2 & 0x0e) >> 1)];
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if ((pos2 & 0x80) != 0)
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irq = smc_irq[((pos2 & 0x70) >> 4)];
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else {
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aprint_error_dev(&sc->sc_dev, "unsupported irq selected\n");
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return;
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}
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/* XXX SWAG for number pkts. */
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/* The SMC3016 has a 12K rx buffer and a 4k tx buffer */
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sc->txb_num_pkt = 2;
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sc->rxb_num_pkt = (12288 - 4) / 64;
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/* XXX */
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break;
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}
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#ifdef DIAGNOSTIC
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tra_p = tiara_mca_lookup(ma->ma_id);
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if (tra_p == NULL) {
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aprint_normal("\n");
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aprint_error_dev(&sc->sc_dev, "where did the card go?\n");
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return;
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}
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#endif
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printf(" slot %d ports %#x-%#x irq %d: %s\n", ma->ma_slot + 1,iobase, iobase + TIARA_NPORTS, irq, tra_p->tra_name);
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/* Map i/o space. */
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if (bus_space_map(iot, iobase, TIARA_NPORTS, 0, &ioh)) {
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aprint_error_dev(&sc->sc_dev, "can't map i/o space\n");
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return;
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}
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sc->sc_bst = iot;
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sc->sc_bsh = ioh;
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/* Get ethernet address from PROM */
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bus_space_read_region_1(iot, ioh, TIARA_PROM_ID, myea, ETHER_ADDR_LEN);
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/* This interface is always enabled. */
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/* XXX
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sc->sc_stat |= NIC_STAT_ENABLED;
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*/
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/*
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* Do generic MB86950 attach.
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*/
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mb86950_attach(sc, myea);
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mb86950_config(sc, NULL, 0, 0);
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/* Establish the interrupt handler. */
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isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET,
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mb86950_intr, sc);
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if (isc->sc_ih == NULL) {
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aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt handler\n");
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return;
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}
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}
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