NetBSD-5.0.2/sys/dev/mvme/lpt_pcctwo.c
/* $NetBSD: lpt_pcctwo.c,v 1.11 2008/04/28 20:23:54 martin Exp $ */
/*-
* Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Steve C. Woodford.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Device Driver back-end for the PCCChip2's parallel printer port
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lpt_pcctwo.c,v 1.11 2008/04/28 20:23:54 martin Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/syslog.h>
#include <sys/cpu.h>
#include <sys/bus.h>
#include <dev/mvme/lptvar.h>
#include <dev/mvme/pcctworeg.h>
#include <dev/mvme/pcctwovar.h>
/*
* Autoconfig stuff
*/
int lpt_pcctwo_match(device_t, cfdata_t , void *);
void lpt_pcctwo_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(lpt_pcctwo, sizeof(struct lpt_softc),
lpt_pcctwo_match, lpt_pcctwo_attach, NULL, NULL);
extern struct cfdriver lpt_cd;
int lpt_pcctwo_intr(void *);
void lpt_pcctwo_open(struct lpt_softc *, int);
void lpt_pcctwo_close(struct lpt_softc *);
void lpt_pcctwo_iprime(struct lpt_softc *);
void lpt_pcctwo_speed(struct lpt_softc *, int);
int lpt_pcctwo_notrdy(struct lpt_softc *, int);
void lpt_pcctwo_wr_data(struct lpt_softc *, u_char);
struct lpt_funcs lpt_pcctwo_funcs = {
lpt_pcctwo_open,
lpt_pcctwo_close,
lpt_pcctwo_iprime,
lpt_pcctwo_speed,
lpt_pcctwo_notrdy,
lpt_pcctwo_wr_data
};
/* ARGSUSED */
int
lpt_pcctwo_match(parent, cf, args)
device_t parent;
cfdata_t cf;
void *args;
{
struct pcctwo_attach_args *pa;
pa = args;
if (strcmp(pa->pa_name, lpt_cd.cd_name))
return (0);
#ifdef MVME68K
if (machineid != MVME_167 && machineid != MVME_177)
return (0);
#endif
#ifdef MVME88K
if (machineid != MVME_187)
return (0);
#endif
pa->pa_ipl = cf->pcctwocf_ipl;
return (1);
}
/* ARGSUSED */
void
lpt_pcctwo_attach(parent, self, args)
device_t parent;
device_t self;
void *args;
{
struct pcctwo_attach_args *pa;
struct lpt_softc *sc;
pa = (struct pcctwo_attach_args *) args;
sc = device_private(self);
sc->sc_dev = self;
/* The printer registers are part of the PCCChip2's own registers. */
sc->sc_bust = pa->pa_bust;
bus_space_map(pa->pa_bust, pa->pa_offset, PCC2REG_SIZE, 0,
&sc->sc_bush);
sc->sc_ipl = pa->pa_ipl & PCCTWO_ICR_LEVEL_MASK;
sc->sc_laststatus = 0;
sc->sc_funcs = &lpt_pcctwo_funcs;
aprint_normal(": PCCchip2 Parallel Printer\n");
/*
* Disable interrupts until device is opened
*/
pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, 0);
pcc2_reg_write(sc, PCC2REG_PRT_FAULT_ICSR, 0);
pcc2_reg_write(sc, PCC2REG_PRT_SEL_ICSR, 0);
pcc2_reg_write(sc, PCC2REG_PRT_PE_ICSR, 0);
pcc2_reg_write(sc, PCC2REG_PRT_BUSY_ICSR, 0);
pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 0);
/*
* Main attachment code
*/
lpt_attach_subr(sc);
/* Register the event counter */
evcnt_attach_dynamic(&sc->sc_evcnt, EVCNT_TYPE_INTR,
pcctwointr_evcnt(sc->sc_ipl), "printer", device_xname(sc->sc_dev));
/*
* Hook into the printer interrupt
*/
pcctwointr_establish(PCCTWOV_PRT_ACK, lpt_pcctwo_intr, sc->sc_ipl, sc,
&sc->sc_evcnt);
}
/*
* Handle printer interrupts
*/
int
lpt_pcctwo_intr(arg)
void *arg;
{
struct lpt_softc *sc;
int i;
sc = (struct lpt_softc *) arg;
/* is printer online and ready for output */
if (lpt_pcctwo_notrdy(sc, 0) || lpt_pcctwo_notrdy(sc, 1))
return (0);
i = lpt_intr(sc);
if (pcc2_reg_read(sc, PCC2REG_PRT_INPUT_STATUS) & PCCTWO_PRT_IN_SR_PINT)
pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR,
sc->sc_icr | PCCTWO_ICR_ICLR);
return (i);
}
void
lpt_pcctwo_open(sc, int_ena)
struct lpt_softc *sc;
int int_ena;
{
int sps;
pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR,
PCCTWO_ICR_ICLR | PCCTWO_ICR_EDGE);
pcc2_reg_write(sc, PCC2REG_PRT_CONTROL,
pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) | PCCTWO_PRT_CTRL_DOEN);
if (int_ena == 0) {
sps = splhigh();
sc->sc_icr = sc->sc_ipl | PCCTWO_ICR_EDGE;
pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, sc->sc_icr);
splx(sps);
}
}
void
lpt_pcctwo_close(sc)
struct lpt_softc *sc;
{
pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR,
PCCTWO_ICR_ICLR | PCCTWO_ICR_EDGE);
pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 0);
}
void
lpt_pcctwo_iprime(sc)
struct lpt_softc *sc;
{
pcc2_reg_write(sc, PCC2REG_PRT_CONTROL,
pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) | PCCTWO_PRT_CTRL_INP);
delay(100);
pcc2_reg_write(sc, PCC2REG_PRT_CONTROL,
pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) & ~PCCTWO_PRT_CTRL_INP);
delay(100);
}
void
lpt_pcctwo_speed(sc, speed)
struct lpt_softc *sc;
int speed;
{
u_int8_t reg;
reg = pcc2_reg_read(sc, PCC2REG_PRT_CONTROL);
if (speed == LPT_STROBE_FAST)
reg |= PCCTWO_PRT_CTRL_FAST;
else
reg &= ~PCCTWO_PRT_CTRL_FAST;
pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, reg);
}
int
lpt_pcctwo_notrdy(sc, err)
struct lpt_softc *sc;
int err;
{
u_int8_t status;
u_int8_t new;
#define LPS_INVERT (PCCTWO_PRT_IN_SR_SEL)
#define LPS_MASK (PCCTWO_PRT_IN_SR_SEL | PCCTWO_PRT_IN_SR_FLT | \
PCCTWO_PRT_IN_SR_BSY | PCCTWO_PRT_IN_SR_PE)
status = pcc2_reg_read(sc, PCC2REG_PRT_INPUT_STATUS) ^ LPS_INVERT;
status &= LPS_MASK;
if (err) {
new = status & ~sc->sc_laststatus;
sc->sc_laststatus = status;
if (new & PCCTWO_PRT_IN_SR_SEL)
log(LOG_NOTICE, "%s: offline\n",
device_xname(sc->sc_dev));
else if (new & PCCTWO_PRT_IN_SR_PE)
log(LOG_NOTICE, "%s: out of paper\n",
device_xname(sc->sc_dev));
else if (new & PCCTWO_PRT_IN_SR_FLT)
log(LOG_NOTICE, "%s: output error\n",
device_xname(sc->sc_dev));
}
return (status);
}
void
lpt_pcctwo_wr_data(sc, data)
struct lpt_softc *sc;
u_char data;
{
pcc2_reg_write16(sc, PCC2REG_PRT_DATA, (u_int16_t) data);
}