274 lines
6.8 KiB
C
274 lines
6.8 KiB
C
/* $NetBSD: lpt_pcctwo.c,v 1.12 2009/03/14 15:36:19 dsl 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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* Device Driver back-end for the PCCChip2's parallel printer port
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: lpt_pcctwo.c,v 1.12 2009/03/14 15:36:19 dsl Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/syslog.h>
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#include <sys/cpu.h>
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#include <sys/bus.h>
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#include <dev/mvme/lptvar.h>
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#include <dev/mvme/pcctworeg.h>
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#include <dev/mvme/pcctwovar.h>
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/*
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* Autoconfig stuff
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*/
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int lpt_pcctwo_match(device_t, cfdata_t , void *);
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void lpt_pcctwo_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(lpt_pcctwo, sizeof(struct lpt_softc),
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lpt_pcctwo_match, lpt_pcctwo_attach, NULL, NULL);
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extern struct cfdriver lpt_cd;
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int lpt_pcctwo_intr(void *);
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void lpt_pcctwo_open(struct lpt_softc *, int);
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void lpt_pcctwo_close(struct lpt_softc *);
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void lpt_pcctwo_iprime(struct lpt_softc *);
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void lpt_pcctwo_speed(struct lpt_softc *, int);
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int lpt_pcctwo_notrdy(struct lpt_softc *, int);
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void lpt_pcctwo_wr_data(struct lpt_softc *, u_char);
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struct lpt_funcs lpt_pcctwo_funcs = {
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lpt_pcctwo_open,
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lpt_pcctwo_close,
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lpt_pcctwo_iprime,
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lpt_pcctwo_speed,
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lpt_pcctwo_notrdy,
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lpt_pcctwo_wr_data
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};
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/* ARGSUSED */
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int
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lpt_pcctwo_match(device_t parent, cfdata_t cf, void *args)
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{
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struct pcctwo_attach_args *pa;
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pa = args;
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if (strcmp(pa->pa_name, lpt_cd.cd_name))
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return (0);
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#ifdef MVME68K
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if (machineid != MVME_167 && machineid != MVME_177)
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return (0);
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#endif
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#ifdef MVME88K
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if (machineid != MVME_187)
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return (0);
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#endif
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pa->pa_ipl = cf->pcctwocf_ipl;
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return (1);
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}
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/* ARGSUSED */
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void
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lpt_pcctwo_attach(device_t parent, device_t self, void *args)
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{
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struct pcctwo_attach_args *pa;
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struct lpt_softc *sc;
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pa = (struct pcctwo_attach_args *) args;
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sc = device_private(self);
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sc->sc_dev = self;
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/* The printer registers are part of the PCCChip2's own registers. */
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sc->sc_bust = pa->pa_bust;
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bus_space_map(pa->pa_bust, pa->pa_offset, PCC2REG_SIZE, 0,
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&sc->sc_bush);
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sc->sc_ipl = pa->pa_ipl & PCCTWO_ICR_LEVEL_MASK;
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sc->sc_laststatus = 0;
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sc->sc_funcs = &lpt_pcctwo_funcs;
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aprint_normal(": PCCchip2 Parallel Printer\n");
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/*
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* Disable interrupts until device is opened
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*/
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pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, 0);
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pcc2_reg_write(sc, PCC2REG_PRT_FAULT_ICSR, 0);
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pcc2_reg_write(sc, PCC2REG_PRT_SEL_ICSR, 0);
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pcc2_reg_write(sc, PCC2REG_PRT_PE_ICSR, 0);
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pcc2_reg_write(sc, PCC2REG_PRT_BUSY_ICSR, 0);
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pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 0);
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/*
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* Main attachment code
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*/
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lpt_attach_subr(sc);
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/* Register the event counter */
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evcnt_attach_dynamic(&sc->sc_evcnt, EVCNT_TYPE_INTR,
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pcctwointr_evcnt(sc->sc_ipl), "printer", device_xname(sc->sc_dev));
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/*
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* Hook into the printer interrupt
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*/
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pcctwointr_establish(PCCTWOV_PRT_ACK, lpt_pcctwo_intr, sc->sc_ipl, sc,
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&sc->sc_evcnt);
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}
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/*
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* Handle printer interrupts
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*/
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int
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lpt_pcctwo_intr(void *arg)
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{
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struct lpt_softc *sc;
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int i;
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sc = (struct lpt_softc *) arg;
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/* is printer online and ready for output */
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if (lpt_pcctwo_notrdy(sc, 0) || lpt_pcctwo_notrdy(sc, 1))
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return (0);
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i = lpt_intr(sc);
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if (pcc2_reg_read(sc, PCC2REG_PRT_INPUT_STATUS) & PCCTWO_PRT_IN_SR_PINT)
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pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR,
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sc->sc_icr | PCCTWO_ICR_ICLR);
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return (i);
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}
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void
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lpt_pcctwo_open(struct lpt_softc *sc, int int_ena)
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{
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int sps;
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pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR,
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PCCTWO_ICR_ICLR | PCCTWO_ICR_EDGE);
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pcc2_reg_write(sc, PCC2REG_PRT_CONTROL,
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pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) | PCCTWO_PRT_CTRL_DOEN);
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if (int_ena == 0) {
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sps = splhigh();
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sc->sc_icr = sc->sc_ipl | PCCTWO_ICR_EDGE;
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pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, sc->sc_icr);
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splx(sps);
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}
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}
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void
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lpt_pcctwo_close(struct lpt_softc *sc)
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{
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pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR,
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PCCTWO_ICR_ICLR | PCCTWO_ICR_EDGE);
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pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 0);
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}
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void
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lpt_pcctwo_iprime(struct lpt_softc *sc)
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{
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pcc2_reg_write(sc, PCC2REG_PRT_CONTROL,
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pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) | PCCTWO_PRT_CTRL_INP);
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delay(100);
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pcc2_reg_write(sc, PCC2REG_PRT_CONTROL,
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pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) & ~PCCTWO_PRT_CTRL_INP);
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delay(100);
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}
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void
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lpt_pcctwo_speed(struct lpt_softc *sc, int speed)
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{
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u_int8_t reg;
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reg = pcc2_reg_read(sc, PCC2REG_PRT_CONTROL);
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if (speed == LPT_STROBE_FAST)
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reg |= PCCTWO_PRT_CTRL_FAST;
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else
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reg &= ~PCCTWO_PRT_CTRL_FAST;
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pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, reg);
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}
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int
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lpt_pcctwo_notrdy(struct lpt_softc *sc, int err)
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{
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u_int8_t status;
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u_int8_t new;
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#define LPS_INVERT (PCCTWO_PRT_IN_SR_SEL)
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#define LPS_MASK (PCCTWO_PRT_IN_SR_SEL | PCCTWO_PRT_IN_SR_FLT | \
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PCCTWO_PRT_IN_SR_BSY | PCCTWO_PRT_IN_SR_PE)
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status = pcc2_reg_read(sc, PCC2REG_PRT_INPUT_STATUS) ^ LPS_INVERT;
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status &= LPS_MASK;
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if (err) {
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new = status & ~sc->sc_laststatus;
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sc->sc_laststatus = status;
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if (new & PCCTWO_PRT_IN_SR_SEL)
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log(LOG_NOTICE, "%s: offline\n",
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device_xname(sc->sc_dev));
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else if (new & PCCTWO_PRT_IN_SR_PE)
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log(LOG_NOTICE, "%s: out of paper\n",
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device_xname(sc->sc_dev));
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else if (new & PCCTWO_PRT_IN_SR_FLT)
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log(LOG_NOTICE, "%s: output error\n",
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device_xname(sc->sc_dev));
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}
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return (status);
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}
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void
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lpt_pcctwo_wr_data(struct lpt_softc *sc, u_char data)
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{
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pcc2_reg_write16(sc, PCC2REG_PRT_DATA, (u_int16_t) data);
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}
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