234 lines
6.1 KiB
C
234 lines
6.1 KiB
C
/* $NetBSD: clmpcc_pcctwo.c,v 1.2 1999/02/14 17:54:28 scw Exp $ */
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/*-
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* Copyright (c) 1999 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 Steve C. Woodford.
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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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* Cirrus Logic CD2401 4-channel serial chip. PCCchip2 Front-end.
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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/proc.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/syslog.h>
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#include <dev/cons.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <dev/ic/clmpccvar.h>
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#include <mvme68k/dev/pccvar.h>
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#include <mvme68k/dev/pcctworeg.h>
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/* Definition of the driver for autoconfig. */
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static int clmpcc_pcctwo_match __P((struct device *,
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struct cfdata *, void *));
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static void clmpcc_pcctwo_attach __P((struct device *,
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struct device *, void *));
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static void clmpcc_pcctwo_iackhook __P((struct clmpcc_softc *, int));
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static void clmpcc_pcctwo_softhook __P((struct clmpcc_softc *));
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static u_long clmpcc_pcctwo_sir;
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struct cfattach clmpcc_pcctwo_ca = {
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sizeof(struct clmpcc_softc), clmpcc_pcctwo_match, clmpcc_pcctwo_attach
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};
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extern struct cfdriver clmpcc_cd;
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/*
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* For clmpccopen()
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*/
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cdev_decl(clmpcc);
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/*
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* Is the CD2401 chip present?
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*/
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static int
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clmpcc_pcctwo_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 pcc_attach_args *pa = aux;
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if (strcmp(pa->pa_name, clmpcc_cd.cd_name))
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return (0);
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pa->pa_ipl = cf->pcccf_ipl;
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return (1);
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}
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/*
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* Attach a found CD2401.
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*/
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static void
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clmpcc_pcctwo_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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struct clmpcc_softc *sc = (void *) self;
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struct pcc_attach_args *pa = aux;
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int level = pa->pa_ipl;
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sc->sc_iot = (bus_space_tag_t)0;
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sc->sc_ioh = (bus_space_handle_t) PCCTWO_VADDR(pa->pa_offset);
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sc->sc_clk = 20000000;
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sc->sc_byteswap = CLMPCC_BYTESWAP_LOW;
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sc->sc_swaprtsdtr = 1;
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sc->sc_iackhook = clmpcc_pcctwo_iackhook;
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sc->sc_softhook = clmpcc_pcctwo_softhook;
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sc->sc_vector_base = PCCTWO_SCC_VECBASE;
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sc->sc_rpilr = 0x03;
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sc->sc_tpilr = 0x02;
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sc->sc_mpilr = 0x01;
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/* Do common parts of CD2401 configuration. */
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clmpcc_attach(sc);
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/* Allocate a software interrupt cookie */
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clmpcc_pcctwo_sir = allocate_sir(clmpcc_softintr, sc);
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/* Hook the interrupts */
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pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc);
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pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc);
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pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc);
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pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc);
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/* Enable the interrupts */
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sys_pcctwo->scc_mod_icr = level | PCCTWO_ICR_IEN;
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sys_pcctwo->scc_rx_icr = level | PCCTWO_ICR_IEN;
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sys_pcctwo->scc_tx_icr = level | PCCTWO_ICR_IEN;
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}
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static void
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clmpcc_pcctwo_softhook(sc)
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struct clmpcc_softc *sc;
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{
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setsoftint(clmpcc_pcctwo_sir);
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}
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void
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clmpcc_pcctwo_iackhook(sc, which)
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struct clmpcc_softc *sc;
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int which;
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{
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struct pcctwo *pcc2;
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volatile u_char foo;
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if ( (pcc2 = sys_pcctwo) == NULL )
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pcc2 = PCCTWO_VADDR(PCCTWO_REG_OFF);
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switch ( which ) {
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case CLMPCC_IACK_MODEM:
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foo = pcc2->scc_mod_piack;
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break;
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case CLMPCC_IACK_RX:
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foo = pcc2->scc_rx_piack;
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break;
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case CLMPCC_IACK_TX:
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foo = pcc2->scc_tx_piack;
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break;
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}
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}
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/****************************************************************
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* Console support functions (MVME PCCchip2 specific!)
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****************************************************************/
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/*
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* Check for CD2401 console.
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*/
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void
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clmpcccnprobe(cp)
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struct consdev *cp;
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{
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int maj;
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if (machineid == MVME_147) {
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cp->cn_pri = CN_DEAD;
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return;
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}
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/*
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* Locate the major number
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*/
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for (maj = 0; maj < nchrdev; maj++) {
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if ( cdevsw[maj].d_open == clmpccopen )
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break;
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}
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/* Initialize required fields. */
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cp->cn_dev = makedev(maj, 0);
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cp->cn_pri = CN_NORMAL;
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}
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void
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clmpcccninit(cp)
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struct consdev *cp;
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{
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static struct clmpcc_softc cons_sc;
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cons_sc.sc_iot = (bus_space_tag_t)0;
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cons_sc.sc_ioh = (bus_space_handle_t) PCCTWO_VADDR(PCCTWO_SCC_OFF);
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cons_sc.sc_clk = 20000000;
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cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW;
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cons_sc.sc_swaprtsdtr = 1;
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cons_sc.sc_iackhook = clmpcc_pcctwo_iackhook;
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cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE;
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cons_sc.sc_rpilr = 0x03;
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cons_sc.sc_tpilr = 0x02;
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cons_sc.sc_mpilr = 0x01;
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clmpcc_cnattach(&cons_sc, 0, 9600);
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}
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