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authorleo <leo@NetBSD.org>1996-03-27 10:20:44 +0000
committerleo <leo@NetBSD.org>1996-03-27 10:20:44 +0000
commit28e46e648fd734e8840ae2ee507e9df3a5f4eae4 (patch)
tree6fa49aed6c68f8ad298a459c1b1ec416bf149eed /sys
parent8526e9844ca7da2becd51fc0a99fbce62778342a (diff)
Add centronics printer driver.
Diffstat (limited to 'sys')
-rw-r--r--sys/arch/atari/atari/conf.c12
-rw-r--r--sys/arch/atari/atari/locore.s18
-rw-r--r--sys/arch/atari/atari/vectors.s4
-rw-r--r--sys/arch/atari/dev/lpt.c417
4 files changed, 446 insertions, 5 deletions
diff --git a/sys/arch/atari/atari/conf.c b/sys/arch/atari/atari/conf.c
index fc5154f89a0..b48e8805beb 100644
--- a/sys/arch/atari/atari/conf.c
+++ b/sys/arch/atari/atari/conf.c
@@ -1,4 +1,4 @@
-/* $NetBSD: conf.c,v 1.13 1996/03/14 21:41:06 leo Exp $ */
+/* $NetBSD: conf.c,v 1.14 1996/03/27 10:23:54 leo Exp $ */
/*
* Copyright (c) 1991 The Regents of the University of California.
@@ -113,6 +113,13 @@ int nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);
(dev_type_stop((*))) enodev, (dev_type_tty((*))) nullop, \
dev_init(c,n,select), dev_init(c,n,mmap) }
+/* open, close, write, ioctl */
+#define cdev_lpt_init(c,n) { \
+ dev_init(c,n,open), dev_init(c,n,close), \
+ (dev_type_read((*))) enodev, dev_init(c,n,write), \
+ dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
+ 0, seltrue, (dev_type_mmap((*))) enodev, 0}
+
cdev_decl(cn);
cdev_decl(ctty);
#define mmread mmrw
@@ -158,6 +165,7 @@ cdev_decl(tun);
#define NLKM 0
#endif
cdev_decl(lkm);
+cdev_decl(lpt);
struct cdevsw cdevsw[] =
{
@@ -192,6 +200,7 @@ struct cdevsw cdevsw[] =
cdev_lkm_dummy(), /* 26 */
cdev_disk_init(NCCD,ccd), /* 27: concatenated disk driver */
cdev_bpftun_init(NTUN,tun), /* 28: network tunnel */
+ cdev_lpt_init(1, lpt), /* 29: Centronics */
};
int nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
@@ -283,6 +292,7 @@ static int chrtoblktab[] = {
/* 26 */ NODEV,
/* 27 */ 13,
/* 28 */ NODEV,
+ /* 29 */ NODEV,
};
/*
diff --git a/sys/arch/atari/atari/locore.s b/sys/arch/atari/atari/locore.s
index 89af62491e6..0053fdf660f 100644
--- a/sys/arch/atari/atari/locore.s
+++ b/sys/arch/atari/atari/locore.s
@@ -1,4 +1,4 @@
-/* $NetBSD: locore.s,v 1.15 1996/02/02 02:36:20 mycroft Exp $ */
+/* $NetBSD: locore.s,v 1.16 1996/03/27 10:20:44 leo Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@@ -523,6 +523,19 @@ mfp_timc:
jra rei | all done
#endif /* STATCLOCK */
+ /* MFP BUSYY handler --- printer --- */
+mfp_lpt:
+ addql #1,_intrcnt+40 | add another printer interrupt
+
+ moveml d0-d1/a0-a1,sp@- | Save scratch registers
+ movw sp@(16),sp@- | push previous SR value
+ clrw sp@- | padded to longword
+ jbsr _lptintr | handle interrupt
+ addql #4,sp | pop SR
+ moveml sp@+,d0-d1/a0-a1
+ addql #1,_cnt+V_INTR | chalk up another interrupt
+ jra rei
+
/* MFP ACIA handler --- keyboard/midi --- */
mfp_kbd:
addql #1,_intrcnt+8 | add another kbd/mouse interrupt
@@ -1899,8 +1912,9 @@ _intrnames:
.asciz "nmi"
.asciz "8530-SCC"
.asciz "statclock"
+ .asciz "printer"
_eintrnames:
.even
_intrcnt:
- .long 0,0,0,0,0,0,0,0,0,0
+ .long 0,0,0,0,0,0,0,0,0,0,0
_eintrcnt:
diff --git a/sys/arch/atari/atari/vectors.s b/sys/arch/atari/atari/vectors.s
index 8543bd510f0..32a9edd1fea 100644
--- a/sys/arch/atari/atari/vectors.s
+++ b/sys/arch/atari/atari/vectors.s
@@ -1,4 +1,4 @@
-/* $NetBSD: vectors.s,v 1.3 1995/11/30 21:52:50 leo Exp $ */
+/* $NetBSD: vectors.s,v 1.4 1996/03/27 10:20:48 leo Exp $ */
/*
* Copyright (c) 1988 University of Utah
@@ -128,7 +128,7 @@ Lvectab:
/*
* MFP 1 auto vectors (ipl 6)
*/
- .long _badmfpint | 64: parallel port - BUSY
+ .long mfp_lpt | 64: parallel port - BUSY
.long _badmfpint | 65: modem port 1 - DCD
.long _badmfpint | 66: modem port 1 - CTS
.long _badmfpint | 67: unassigned
diff --git a/sys/arch/atari/dev/lpt.c b/sys/arch/atari/dev/lpt.c
new file mode 100644
index 00000000000..c6403f599fe
--- /dev/null
+++ b/sys/arch/atari/dev/lpt.c
@@ -0,0 +1,417 @@
+/* $NetBSD: lpt.c,v 1.1 1996/03/27 10:21:05 leo Exp $ */
+
+/*
+ * Copyright (c) 1996 Leo Weppelman
+ * Copyright (c) 1993, 1994 Charles Hannum.
+ * Copyright (c) 1990 William F. Jolitz, TeleMuse
+ * All rights reserved.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This software is a component of "386BSD" developed by
+ * William F. Jolitz, TeleMuse.
+ * 4. Neither the name of the developer nor the name "386BSD"
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS A COMPONENT OF 386BSD DEVELOPED BY WILLIAM F. JOLITZ
+ * AND IS INTENDED FOR RESEARCH AND EDUCATIONAL PURPOSES ONLY. THIS
+ * SOFTWARE SHOULD NOT BE CONSIDERED TO BE A COMMERCIAL PRODUCT.
+ * THE DEVELOPER URGES THAT USERS WHO REQUIRE A COMMERCIAL PRODUCT
+ * NOT MAKE USE OF THIS WORK.
+ *
+ * FOR USERS WHO WISH TO UNDERSTAND THE 386BSD SYSTEM DEVELOPED
+ * BY WILLIAM F. JOLITZ, WE RECOMMEND THE USER STUDY WRITTEN
+ * REFERENCES SUCH AS THE "PORTING UNIX TO THE 386" SERIES
+ * (BEGINNING JANUARY 1991 "DR. DOBBS JOURNAL", USA AND BEGINNING
+ * JUNE 1991 "UNIX MAGAZIN", GERMANY) BY WILLIAM F. JOLITZ AND
+ * LYNNE GREER JOLITZ, AS WELL AS OTHER BOOKS ON UNIX AND THE
+ * ON-LINE 386BSD USER MANUAL BEFORE USE. A BOOK DISCUSSING THE INTERNALS
+ * OF 386BSD ENTITLED "386BSD FROM THE INSIDE OUT" WILL BE AVAILABLE LATE 1992.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``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 DEVELOPER 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 originally written for AT parallel printer port. Now
+ * drives the printer port on the YM2149.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/buf.h>
+#include <sys/kernel.h>
+#include <sys/ioctl.h>
+#include <sys/uio.h>
+#include <sys/device.h>
+#include <sys/conf.h>
+#include <sys/syslog.h>
+
+#include <machine/cpu.h>
+#include <machine/iomap.h>
+#include <machine/mfp.h>
+
+#include <atari/dev/ym2149reg.h>
+
+#define TIMEOUT hz*16 /* wait up to 16 seconds for a ready */
+#define STEP hz/4
+
+#define LPTPRI (PZERO+8)
+#define LPT_BSIZE 1024
+
+#if !defined(DEBUG) || !defined(notdef)
+#define lprintf if (0) printf
+#else
+#define lprintf if (lptdebug) printf
+int lptdebug = 1;
+#endif
+
+struct lpt_softc {
+ struct device sc_dev;
+ size_t sc_count;
+ struct buf *sc_inbuf;
+ u_char *sc_cp;
+ int sc_spinmax;
+ u_char sc_state;
+#define LPT_OPEN 0x01 /* device is open */
+#define LPT_OBUSY 0x02 /* printer is busy doing output */
+#define LPT_INIT 0x04 /* waiting to initialize for open */
+ u_char sc_flags;
+#define LPT_AUTOLF 0x20 /* automatic LF on CR XXX: LWP - not yet... */
+#define LPT_NOINTR 0x40 /* do not use interrupt */
+};
+
+#define LPTUNIT(s) (minor(s) & 0x1f)
+#define LPTFLAGS(s) (minor(s) & 0xe0)
+#define NOT_READY() (MFP->mf_gpip & IO_PBSY)
+
+/* {b,c}devsw[] function prototypes */
+dev_type_open(lptopen);
+dev_type_close(lptclose);
+dev_type_write(lptwrite);
+dev_type_ioctl(lptioctl);
+
+static void lptwakeup __P((void *arg));
+static int pushbytes __P((struct lpt_softc *));
+
+int lptintr __P((void));
+
+/*
+ * Autoconfig stuff
+ */
+static void lptattach __P((struct device *, struct device *, void *));
+static int lptmatch __P((struct device *, void *, void *));
+
+struct cfattach lpt_ca = {
+ sizeof(struct lpt_softc), lptmatch, lptattach
+};
+
+struct cfdriver lpt_cd = {
+ NULL, "lpt", DV_DULL, NULL, 0
+};
+
+/*ARGSUSED*/
+static int
+lptmatch(pdp, match, auxp)
+struct device *pdp;
+void *match, *auxp;
+{
+ struct cfdata *cfp = match;
+
+ if (!strcmp((char *)auxp, "*") && cfp->cf_unit == 0)
+ return (1);
+ return (0);
+}
+
+/*ARGSUSED*/
+static void
+lptattach(pdp, dp, auxp)
+struct device *pdp, *dp;
+void *auxp;
+{
+ struct lpt_softc *sc = (void *)dp;
+
+ sc->sc_state = 0;
+
+ ym2149_strobe(1);
+
+ printf("\n");
+}
+
+/*
+ * Reset the printer, then wait until it's selected and not busy.
+ */
+int
+lptopen(dev, flag, mode, p)
+ dev_t dev;
+ int flag, mode;
+ struct proc *p;
+{
+ int unit = LPTUNIT(dev);
+ u_char flags = LPTFLAGS(dev);
+ struct lpt_softc *sc;
+ int error;
+ int spin;
+ int sps;
+
+ if (unit >= lpt_cd.cd_ndevs)
+ return ENXIO;
+ sc = lpt_cd.cd_devs[unit];
+ if (!sc)
+ return ENXIO;
+
+#ifdef DIAGNOSTIC
+ if (sc->sc_state)
+ printf("%s: stat=0x%x not zero\n", sc->sc_dev.dv_xname,
+ sc->sc_state);
+#endif
+
+ if (sc->sc_state)
+ return EBUSY;
+
+ sc->sc_state = LPT_INIT;
+ sc->sc_flags = flags;
+ lprintf("%s: open: flags=0x%x\n", sc->sc_dev.dv_xname, flags);
+
+ /* wait till ready (printer running diagnostics) */
+ for (spin = 0; NOT_READY(); spin += STEP) {
+ if (spin >= TIMEOUT) {
+ sc->sc_state = 0;
+ return EBUSY;
+ }
+
+ /* wait 1/4 second, give up if we get a signal */
+ if (error = tsleep((caddr_t)sc, LPTPRI | PCATCH, "lptopen",
+ STEP) != EWOULDBLOCK) {
+ sc->sc_state = 0;
+ return error;
+ }
+ }
+
+ sc->sc_inbuf = geteblk(LPT_BSIZE);
+ sc->sc_count = 0;
+ sc->sc_state = LPT_OPEN;
+
+ if ((sc->sc_flags & LPT_NOINTR) == 0) {
+ lptwakeup(sc);
+
+ sps = splhigh();
+ MFP->mf_imrb |= IB_PBSY;
+ MFP->mf_ierb |= IB_PBSY;
+ splx(sps);
+ }
+
+ lprintf("%s: opened\n", sc->sc_dev.dv_xname);
+printf("ierb: %x, imrb:%x aer: %x, iprb: %x\n", MFP->mf_ierb,MFP->mf_imrb,
+ MFP->mf_aer, MFP->mf_iprb);
+ return 0;
+}
+
+void
+lptwakeup(arg)
+ void *arg;
+{
+ struct lpt_softc *sc = arg;
+ int s;
+
+ s = spltty();
+ lptintr();
+ splx(s);
+
+ timeout(lptwakeup, sc, STEP);
+}
+
+/*
+ * Close the device, and free the local line buffer.
+ */
+int
+lptclose(dev, flag, mode, p)
+ dev_t dev;
+ int flag;
+ int mode;
+ struct proc *p;
+{
+ int unit = LPTUNIT(dev);
+ struct lpt_softc *sc = lpt_cd.cd_devs[unit];
+ int sps;
+
+ if (sc->sc_count)
+ (void) pushbytes(sc);
+
+ if ((sc->sc_flags & LPT_NOINTR) == 0) {
+ untimeout(lptwakeup, sc);
+
+ sps = splhigh();
+ MFP->mf_ierb &= ~IB_PBSY;
+ MFP->mf_imrb &= ~IB_PBSY;
+ splx(sps);
+ }
+
+ sc->sc_state = 0;
+ brelse(sc->sc_inbuf);
+
+ lprintf("%s: closed\n", sc->sc_dev.dv_xname);
+ return 0;
+}
+
+int
+pushbytes(sc)
+ struct lpt_softc *sc;
+{
+ int error;
+
+ if (sc->sc_flags & LPT_NOINTR) {
+ int spin, tic;
+
+ while (sc->sc_count > 0) {
+ spin = 0;
+ while (NOT_READY()) {
+ if (++spin < sc->sc_spinmax)
+ continue;
+ tic = 0;
+ /* adapt busy-wait algorithm */
+ sc->sc_spinmax++;
+ while (NOT_READY()) {
+ /* exponential backoff */
+ tic = tic + tic + 1;
+ if (tic > TIMEOUT)
+ tic = TIMEOUT;
+ error = tsleep((caddr_t)sc,
+ LPTPRI | PCATCH, "lptpsh", tic);
+ if (error != EWOULDBLOCK)
+ return error;
+ }
+ break;
+ }
+
+ ym2149_write_ioport(YM_IOB, *sc->sc_cp++);
+ ym2149_strobe(0);
+ sc->sc_count--;
+ ym2149_strobe(1);
+
+ /* adapt busy-wait algorithm */
+ if (spin*2 + 16 < sc->sc_spinmax)
+ sc->sc_spinmax--;
+ }
+ } else {
+ int s;
+
+ while (sc->sc_count > 0) {
+ /* if the printer is ready for a char, give it one */
+ if ((sc->sc_state & LPT_OBUSY) == 0) {
+ lprintf("%s: write %d\n", sc->sc_dev.dv_xname,
+ sc->sc_count);
+ s = spltty();
+ (void) lptintr();
+ splx(s);
+ }
+ if (error = tsleep((caddr_t)sc, LPTPRI | PCATCH,
+ "lptwrite2", 0))
+ return error;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Copy a line from user space to a local buffer, then call putc to get the
+ * chars moved to the output queue.
+ */
+int
+lptwrite(dev, uio, flags)
+ dev_t dev;
+ struct uio *uio;
+ int flags;
+{
+ struct lpt_softc *sc = lpt_cd.cd_devs[LPTUNIT(dev)];
+ size_t n;
+ int error = 0;
+
+ while (n = min(LPT_BSIZE, uio->uio_resid)) {
+ uiomove(sc->sc_cp = sc->sc_inbuf->b_data, n, uio);
+ sc->sc_count = n;
+ error = pushbytes(sc);
+ if (error) {
+ /*
+ * Return accurate residual if interrupted or timed
+ * out.
+ */
+ uio->uio_resid += sc->sc_count;
+ sc->sc_count = 0;
+ return error;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Handle printer interrupts which occur when the printer is ready to accept
+ * another char.
+ */
+int
+lptintr()
+{
+ struct lpt_softc *sc;
+
+ sc = lpt_cd.cd_devs[0]; /* XXX: LWP - we have only one on the Atari */
+
+ /* is printer online and ready for output */
+ if (NOT_READY())
+ return 0;
+
+ if (sc->sc_count) {
+
+ /* send char */
+ ym2149_write_ioport(YM_IOB, *sc->sc_cp++);
+ ym2149_strobe(0);
+ sc->sc_count--;
+ ym2149_strobe(1);
+ sc->sc_state |= LPT_OBUSY;
+ } else
+ sc->sc_state &= ~LPT_OBUSY;
+
+ if (sc->sc_count == 0) {
+ /* none, wake up the top half to get more */
+ wakeup((caddr_t)sc);
+ }
+
+ return 1;
+}
+
+int
+lptioctl(dev, cmd, data, flag, p)
+ dev_t dev;
+ u_long cmd;
+ caddr_t data;
+ int flag;
+ struct proc *p;
+{
+ int error = 0;
+
+ switch (cmd) {
+ default:
+ error = ENODEV;
+ }
+
+ return error;
+}