273 lines
6.7 KiB
C
273 lines
6.7 KiB
C
/* $NetBSD: clmpcc_pcctwo.c,v 1.20 2014/03/25 15:52:16 christos Exp $ */
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/*-
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* Copyright (c) 1999, 2002 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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*
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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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: clmpcc_pcctwo.c,v 1.20 2014/03/25 15:52:16 christos Exp $");
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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 <sys/cpu.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <dev/ic/clmpccvar.h>
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#include <dev/mvme/pcctwovar.h>
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#include <dev/mvme/pcctworeg.h>
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/* XXXXSCW: Fixme */
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#ifdef MVME68K
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#include <mvme68k/dev/mainbus.h>
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#else
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#error Need consiack hook
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#endif
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/* Definition of the driver for autoconfig. */
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int clmpcc_pcctwo_match(device_t, cfdata_t, void *);
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void clmpcc_pcctwo_attach(device_t, device_t, void *);
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void clmpcc_pcctwo_iackhook(struct clmpcc_softc *, int);
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void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *, int);
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CFATTACH_DECL_NEW(clmpcc_pcctwo, sizeof(struct clmpcc_softc),
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clmpcc_pcctwo_match, clmpcc_pcctwo_attach, NULL, NULL);
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extern struct cfdriver clmpcc_cd;
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extern const struct cdevsw clmpcc_cdevsw;
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/*
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* For clmpcccn*()
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*/
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cons_decl(clmpcc);
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/*
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* Is the CD2401 chip present?
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*/
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int
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clmpcc_pcctwo_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct pcctwo_attach_args *pa;
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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->pcctwocf_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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void
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clmpcc_pcctwo_attach(device_t parent, device_t self, void *aux)
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{
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struct clmpcc_softc *sc;
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struct pcctwo_attach_args *pa = aux;
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int level = pa->pa_ipl;
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sc = device_private(self);
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sc->sc_dev = self;
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level = pa->pa_ipl;
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sc->sc_iot = pa->pa_bust;
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bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh);
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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_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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sc->sc_evcnt = pcctwointr_evcnt(level);
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/* Do common parts of CD2401 configuration. */
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clmpcc_attach(sc);
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/* Hook the interrupts */
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pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL);
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pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc,
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NULL);
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pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL);
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pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL);
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}
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void
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clmpcc_pcctwo_iackhook(struct clmpcc_softc *sc, int which)
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{
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bus_size_t offset;
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volatile u_char foo;
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switch (which) {
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case CLMPCC_IACK_MODEM:
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offset = PCC2REG_SCC_MODEM_PIACK;
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break;
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case CLMPCC_IACK_RX:
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offset = PCC2REG_SCC_RX_PIACK;
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break;
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case CLMPCC_IACK_TX:
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offset = PCC2REG_SCC_TX_PIACK;
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break;
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default:
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#ifdef DEBUG
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printf("%s: Invalid IACK number '%d'\n",
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device_xname(sc->sc_dev), which);
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#endif
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panic("clmpcc_pcctwo_iackhook %d", which);
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}
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foo = pcc2_reg_read(sys_pcctwo, offset);
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__USE(foo);
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}
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/*
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* This routine is only used prior to clmpcc_attach() being called
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*/
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void
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clmpcc_pcctwo_consiackhook(struct clmpcc_softc *sc, int which)
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{
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bus_space_handle_t bush;
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bus_size_t offset;
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volatile u_char foo;
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switch (which) {
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case CLMPCC_IACK_MODEM:
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offset = PCC2REG_SCC_MODEM_PIACK;
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break;
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case CLMPCC_IACK_RX:
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offset = PCC2REG_SCC_RX_PIACK;
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break;
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case CLMPCC_IACK_TX:
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offset = PCC2REG_SCC_TX_PIACK;
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break;
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default:
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#ifdef DEBUG
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printf("%s: Invalid IACK number '%d'\n",
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device_xname(sc->sc_dev), which);
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panic("clmpcc_pcctwo_consiackhook");
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#endif
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panic("clmpcc_pcctwo_iackhook %d", which);
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}
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#ifdef MVME68K
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/*
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* We need to fake the tag and handle since 'sys_pcctwo' will
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* be NULL during early system startup...
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*/
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bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET +
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PCCTWO_REG_OFF]);
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foo = bus_space_read_1(&_mainbus_space_tag, bush, offset);
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__USE(foo);
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#else
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#error Need consiack hook
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#endif
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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(struct consdev *cp)
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{
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int maj;
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#if defined(MVME68K)
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if (machineid != MVME_167 && machineid != MVME_177)
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#elif defined(MVME88K)
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if (machineid != MVME_187)
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#endif
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{
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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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maj = cdevsw_lookup_major(&clmpcc_cdevsw);
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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(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 = &_mainbus_space_tag;
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bus_space_map(&_mainbus_space_tag,
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intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF,
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PCC2REG_SIZE, 0, &cons_sc.sc_ioh);
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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_consiackhook;
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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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