From fdf94d1afe3c05f33e5dc919d603b75ccd9ed37b Mon Sep 17 00:00:00 2001 From: Nicolas Souchu Date: Sun, 14 Feb 1999 12:00:00 +0000 Subject: Rename nlpt to lpt. Remove from ppi.c the old depreciated module stuff. Print info when if_plip can't use interrupts. --- sys/dev/ppbus/if_plip.c | 8 +- sys/dev/ppbus/lpt.c | 921 ++++++++++++++++++++++++++++++++++++++++++++++++ sys/dev/ppbus/lpt.h | 82 +++++ sys/dev/ppbus/nlpt.c | 920 ----------------------------------------------- sys/dev/ppbus/nlpt.h | 81 ----- sys/dev/ppbus/ppi.c | 45 +-- 6 files changed, 1009 insertions(+), 1048 deletions(-) create mode 100644 sys/dev/ppbus/lpt.c create mode 100644 sys/dev/ppbus/lpt.h delete mode 100644 sys/dev/ppbus/nlpt.c delete mode 100644 sys/dev/ppbus/nlpt.h (limited to 'sys/dev') diff --git a/sys/dev/ppbus/if_plip.c b/sys/dev/ppbus/if_plip.c index b9e767e72107..488b46117ed0 100644 --- a/sys/dev/ppbus/if_plip.c +++ b/sys/dev/ppbus/if_plip.c @@ -24,7 +24,7 @@ * SUCH DAMAGE. * * From Id: lpt.c,v 1.55.2.1 1996/11/12 09:08:38 phk Exp - * $Id: if_plip.c,v 1.9 1999/01/30 15:35:39 nsouch Exp $ + * $Id: if_plip.c,v 1.10 1999/02/08 14:12:38 des Exp $ */ /* @@ -99,7 +99,7 @@ #endif #include -#include +#include #include "opt_plip.h" @@ -194,8 +194,10 @@ lpprobe(struct ppb_data *ppb) struct lpt_softc *lp; /* if we haven't interrupts, the probe fails */ - if (!ppb->ppb_link->id_irq) + if (!ppb->ppb_link->id_irq) { + printf("plip: not an interrupt driven port, failed.\n"); return (0); + } lp = (struct lpt_softc *) malloc(sizeof(struct lpt_softc), M_TEMP, M_NOWAIT); diff --git a/sys/dev/ppbus/lpt.c b/sys/dev/ppbus/lpt.c new file mode 100644 index 000000000000..4fd67b8c0c30 --- /dev/null +++ b/sys/dev/ppbus/lpt.c @@ -0,0 +1,921 @@ +/* + * 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. + * + * from: unknown origin, 386BSD 0.1 + * From Id: lpt.c,v 1.55.2.1 1996/11/12 09:08:38 phk Exp + * From Id: nlpt.c,v 1.14 1999/02/08 13:55:43 des Exp + * $Id$ + */ + +/* + * Device Driver for AT parallel printer port + * Written by William Jolitz 12/18/90 + */ + +/* + * Updated for ppbus by Nicolas Souchu + * [Mon Jul 28 1997] + */ + + +#ifdef KERNEL +#include "opt_devfs.h" + +#include +#include +#include +#include +#include +#include +#include +#ifdef DEVFS +#include +#endif /*DEVFS*/ +#include + +#include +#include +#endif /*KERNEL*/ + +#include +#include +#include + +#include "opt_lpt.h" + +#ifndef LPT_DEBUG +#define lprintf(args) +#else +#define lprintf(args) \ + do { \ + if (lptflag) \ + printf args; \ + } while (0) +static int volatile lptflag = 1; +#endif + +#define LPINITRDY 4 /* wait up to 4 seconds for a ready */ +#define LPTOUTINITIAL 10 /* initial timeout to wait for ready 1/10 s */ +#define LPTOUTMAX 1 /* maximal timeout 1 s */ +#define LPPRI (PZERO+8) +#define BUFSIZE 1024 +#define BUFSTATSIZE 32 + +#define LPTUNIT(s) ((s)&0x03) +#define LPTFLAGS(s) ((s)&0xfc) + +static int nlpt = 0; +#define MAXLPT 8 /* XXX not much better! */ +static struct lpt_data *lptdata[MAXLPT]; + +#define LPT_NAME "lpt" /* our official name */ + +static timeout_t lptout; +static int lpt_port_test(struct lpt_data *sc, u_char data, u_char mask); +static int lpt_detect(struct lpt_data *sc); + +/* + * Make ourselves visible as a ppbus driver + */ + +static struct ppb_device *lptprobe(struct ppb_data *ppb); +static int lptattach(struct ppb_device *dev); +static void lptintr(int unit); +static void lpt_drvinit(void *unused); + +static void lpt_intr(int unit); /* without spls */ + +#ifdef KERNEL + +static struct ppb_driver lptdriver = { + lptprobe, lptattach, LPT_NAME +}; +DATA_SET(ppbdriver_set, lptdriver); + +#endif /* KERNEL */ + +/* bits for state */ +#define OPEN (1<<0) /* device is open */ +#define ASLP (1<<1) /* awaiting draining of printer */ +#define EERROR (1<<2) /* error was received from printer */ +#define OBUSY (1<<3) /* printer is busy doing output */ +#define LPTOUT (1<<4) /* timeout while not selected */ +#define TOUT (1<<5) /* timeout while not selected */ +#define LPTINIT (1<<6) /* waiting to initialize for open */ +#define INTERRUPTED (1<<7) /* write call was interrupted */ + +#define HAVEBUS (1<<8) /* the driver owns the bus */ + + +/* status masks to interrogate printer status */ +#define RDY_MASK (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR) /* ready ? */ +#define LP_READY (LPS_SEL|LPS_NBSY|LPS_NERR) + +/* Printer Ready condition - from lpa.c */ +/* Only used in polling code */ +#define LPS_INVERT (LPS_NBSY | LPS_NACK | LPS_SEL | LPS_NERR) +#define LPS_MASK (LPS_NBSY | LPS_NACK | LPS_OUT | LPS_SEL | LPS_NERR) +#define NOT_READY(lpt) ((ppb_rstr(&(lpt)->lpt_dev)^LPS_INVERT)&LPS_MASK) + +#define MAX_SLEEP (hz*5) /* Timeout while waiting for device ready */ +#define MAX_SPIN 20 /* Max delay for device ready in usecs */ + + +static d_open_t lptopen; +static d_close_t lptclose; +static d_write_t lptwrite; +static d_read_t lptread; +static d_ioctl_t lptioctl; + +#define CDEV_MAJOR 16 +static struct cdevsw lpt_cdevsw = + { lptopen, lptclose, lptread, lptwrite, /*16*/ + lptioctl, nullstop, nullreset, nodevtotty, /* lpt */ + seltrue, nommap, nostrat, LPT_NAME, NULL, -1 }; + +static int +lpt_request_ppbus(struct lpt_data *sc, int how) +{ + int error; + + if (sc->sc_state & HAVEBUS) + return (0); + + /* we have the bus only if the request succeded */ + if ((error = ppb_request_bus(&sc->lpt_dev, how)) == 0) + sc->sc_state |= HAVEBUS; + + return (error); +} + +static int +lpt_release_ppbus(struct lpt_data *sc) +{ + ppb_release_bus(&sc->lpt_dev); + sc->sc_state &= ~HAVEBUS; + + return (0); +} + +/* + * Internal routine to lptprobe to do port tests of one byte value + */ +static int +lpt_port_test(struct lpt_data *sc, u_char data, u_char mask) +{ + int temp, timeout; + + data = data & mask; + ppb_wdtr(&sc->lpt_dev, data); + timeout = 10000; + do { + DELAY(10); + temp = ppb_rdtr(&sc->lpt_dev) & mask; + } + while (temp != data && --timeout); + lprintf(("out=%x\tin=%x\ttout=%d\n", data, temp, timeout)); + return (temp == data); +} + +/* + * Probe simplified by replacing multiple loops with a hardcoded + * test pattern - 1999/02/08 des@freebsd.org + * + * New lpt port probe Geoff Rehmet - Rhodes University - 14/2/94 + * Based partially on Rod Grimes' printer probe + * + * Logic: + * 1) If no port address was given, use the bios detected ports + * and autodetect what ports the printers are on. + * 2) Otherwise, probe the data port at the address given, + * using the method in Rod Grimes' port probe. + * (Much code ripped off directly from Rod's probe.) + * + * Comments from Rod's probe: + * Logic: + * 1) You should be able to write to and read back the same value + * to the data port. Do an alternating zeros, alternating ones, + * walking zero, and walking one test to check for stuck bits. + * + * 2) You should be able to write to and read back the same value + * to the control port lower 5 bits, the upper 3 bits are reserved + * per the IBM PC technical reference manauls and different boards + * do different things with them. Do an alternating zeros, alternating + * ones, walking zero, and walking one test to check for stuck bits. + * + * Some printers drag the strobe line down when the are powered off + * so this bit has been masked out of the control port test. + * + * XXX Some printers may not like a fast pulse on init or strobe, I + * don't know at this point, if that becomes a problem these bits + * should be turned off in the mask byte for the control port test. + * + * We are finally left with a mask of 0x14, due to some printers + * being adamant about holding other bits high ........ + * + * Before probing the control port, we write a 0 to the data port - + * If not, some printers chuck out garbage when the strobe line + * gets toggled. + * + * 3) Set the data and control ports to a value of 0 + * + * This probe routine has been tested on Epson Lx-800, HP LJ3P, + * Epson FX-1170 and C.Itoh 8510RM + * printers. + * Quick exit on fail added. + */ +static int +lpt_detect(struct lpt_data *sc) +{ + static u_char testbyte[18] = { + 0x55, /* alternating zeros */ + 0xaa, /* alternating ones */ + 0xfe, 0xfd, 0xfb, 0xf7, + 0xef, 0xdf, 0xbf, 0x7f, /* walking zero */ + 0x01, 0x02, 0x04, 0x08, + 0x10, 0x20, 0x40, 0x80 /* walking one */ + }; + int i, error, status; + + status = 1; /* assume success */ + + if ((error = lpt_request_ppbus(sc, PPB_DONTWAIT))) { + printf(LPT_NAME ": cannot alloc ppbus (%d)!\n", error); + status = 0; + goto end_probe; + } + + for (i = 0; i < 18 && status; i++) + if (!lpt_port_test(sc, testbyte[i], 0xff)) { + status = 0; + goto end_probe; + } + +end_probe: + /* write 0's to control and data ports */ + ppb_wdtr(&sc->lpt_dev, 0); + ppb_wctr(&sc->lpt_dev, 0); + + lpt_release_ppbus(sc); + + return (status); +} + +/* + * lptprobe() + */ +static struct ppb_device * +lptprobe(struct ppb_data *ppb) +{ + struct lpt_data *sc; + + sc = (struct lpt_data *) malloc(sizeof(struct lpt_data), + M_TEMP, M_NOWAIT); + if (!sc) { + printf(LPT_NAME ": cannot malloc!\n"); + return (0); + } + bzero(sc, sizeof(struct lpt_data)); + + lptdata[nlpt] = sc; + + /* + * lpt dependent initialisation. + */ + sc->lpt_unit = nlpt; + + /* + * ppbus dependent initialisation. + */ + sc->lpt_dev.id_unit = sc->lpt_unit; + sc->lpt_dev.name = lptdriver.name; + sc->lpt_dev.ppb = ppb; + sc->lpt_dev.intr = lptintr; + + /* + * Now, try to detect the printer. + */ + if (!lpt_detect(sc)) { + free(sc, M_TEMP); + return (0); + } + + /* Ok, go to next device on next probe */ + nlpt ++; + + return (&sc->lpt_dev); +} + +static int +lptattach(struct ppb_device *dev) +{ + struct lpt_data *sc = lptdata[dev->id_unit]; + int error; + + /* + * Report ourselves + */ + printf(LPT_NAME "%d: on ppbus %d\n", + dev->id_unit, dev->ppb->ppb_link->adapter_unit); + + sc->sc_primed = 0; /* not primed yet */ + + if ((error = lpt_request_ppbus(sc, PPB_DONTWAIT))) { + printf(LPT_NAME ": cannot alloc ppbus (%d)!\n", error); + return (0); + } + + ppb_wctr(&sc->lpt_dev, LPC_NINIT); + + /* check if we can use interrupt, should be done by ppc stuff */ + lprintf(("oldirq %x\n", sc->sc_irq)); + if (ppb_get_irq(&sc->lpt_dev)) { + sc->sc_irq = LP_HAS_IRQ | LP_USE_IRQ | LP_ENABLE_IRQ; + printf(LPT_NAME "%d: Interrupt-driven port\n", dev->id_unit); + } else { + sc->sc_irq = 0; + lprintf((LPT_NAME "%d: Polled port\n", dev->id_unit)); + } + lprintf(("irq %x\n", sc->sc_irq)); + + lpt_release_ppbus(sc); + +#ifdef DEVFS + sc->devfs_token = devfs_add_devswf(&lpt_cdevsw, + dev->id_unit, DV_CHR, + UID_ROOT, GID_WHEEL, 0600, LPT_NAME "%d", dev->id_unit); + sc->devfs_token_ctl = devfs_add_devswf(&lpt_cdevsw, + dev->id_unit | LP_BYPASS, DV_CHR, + UID_ROOT, GID_WHEEL, 0600, LPT_NAME "%d.ctl", dev->id_unit); +#endif + + return (1); +} + +static void +lptout(void *arg) +{ + struct lpt_data *sc = arg; + int pl; + + lprintf(("T %x ", ppb_rstr(&sc->lpt_dev))); + if (sc->sc_state & OPEN) { + sc->sc_backoff++; + if (sc->sc_backoff > hz/LPTOUTMAX) + sc->sc_backoff = sc->sc_backoff > hz/LPTOUTMAX; + timeout(lptout, (caddr_t)sc, sc->sc_backoff); + } else + sc->sc_state &= ~TOUT; + + if (sc->sc_state & EERROR) + sc->sc_state &= ~EERROR; + + /* + * Avoid possible hangs do to missed interrupts + */ + if (sc->sc_xfercnt) { + pl = spltty(); + lpt_intr(sc->lpt_unit); + splx(pl); + } else { + sc->sc_state &= ~OBUSY; + wakeup((caddr_t)sc); + } +} + +/* + * lptopen -- reset the printer, then wait until it's selected and not busy. + * If LP_BYPASS flag is selected, then we do not try to select the + * printer -- this is just used for passing ioctls. + */ + +static int +lptopen(dev_t dev, int flags, int fmt, struct proc *p) +{ + struct lpt_data *sc; + + int s; + int trys, err; + u_int unit = LPTUNIT(minor(dev)); + + if ((unit >= nlpt)) + return (ENXIO); + + sc = lptdata[unit]; + + if (sc->sc_state) { + lprintf((LPT_NAME ": still open %x\n", sc->sc_state)); + return(EBUSY); + } else + sc->sc_state |= LPTINIT; + + sc->sc_flags = LPTFLAGS(minor(dev)); + + /* Check for open with BYPASS flag set. */ + if (sc->sc_flags & LP_BYPASS) { + sc->sc_state = OPEN; + return(0); + } + + /* request the ppbus only if we don't have it already */ + if ((err = lpt_request_ppbus(sc, PPB_WAIT|PPB_INTR)) != 0) + return (err); + + s = spltty(); + lprintf((LPT_NAME " flags 0x%x\n", sc->sc_flags)); + + /* set IRQ status according to ENABLE_IRQ flag */ + if (sc->sc_irq & LP_ENABLE_IRQ) + sc->sc_irq |= LP_USE_IRQ; + else + sc->sc_irq &= ~LP_USE_IRQ; + + /* init printer */ + if ((sc->sc_flags & LP_NO_PRIME) == 0) { + if((sc->sc_flags & LP_PRIMEOPEN) || sc->sc_primed == 0) { + ppb_wctr(&sc->lpt_dev, 0); + sc->sc_primed++; + DELAY(500); + } + } + + ppb_wctr(&sc->lpt_dev, LPC_SEL|LPC_NINIT); + + /* wait till ready (printer running diagnostics) */ + trys = 0; + do { + /* ran out of waiting for the printer */ + if (trys++ >= LPINITRDY*4) { + splx(s); + sc->sc_state = 0; + lprintf(("status %x\n", ppb_rstr(&sc->lpt_dev))); + + lpt_release_ppbus(sc); + return (EBUSY); + } + + /* wait 1/4 second, give up if we get a signal */ + if (tsleep((caddr_t)sc, LPPRI|PCATCH, "lptinit", hz/4) != + EWOULDBLOCK) { + sc->sc_state = 0; + splx(s); + + lpt_release_ppbus(sc); + return (EBUSY); + } + + /* is printer online and ready for output */ + } while ((ppb_rstr(&sc->lpt_dev) & + (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) != + (LPS_SEL|LPS_NBSY|LPS_NERR)); + + sc->sc_control = LPC_SEL|LPC_NINIT; + if (sc->sc_flags & LP_AUTOLF) + sc->sc_control |= LPC_AUTOL; + + /* enable interrupt if interrupt-driven */ + if (sc->sc_irq & LP_USE_IRQ) + sc->sc_control |= LPC_ENA; + + ppb_wctr(&sc->lpt_dev, sc->sc_control); + + sc->sc_state = OPEN; + sc->sc_inbuf = geteblk(BUFSIZE); + sc->sc_statbuf = geteblk(BUFSTATSIZE); + sc->sc_xfercnt = 0; + splx(s); + + /* release the ppbus */ + lpt_release_ppbus(sc); + + /* only use timeout if using interrupt */ + lprintf(("irq %x\n", sc->sc_irq)); + if (sc->sc_irq & LP_USE_IRQ) { + sc->sc_state |= TOUT; + timeout(lptout, (caddr_t)sc, + (sc->sc_backoff = hz/LPTOUTINITIAL)); + } + + lprintf(("opened.\n")); + return(0); +} + +/* + * lptclose -- close the device, free the local line buffer. + * + * Check for interrupted write call added. + */ + +static int +lptclose(dev_t dev, int flags, int fmt, struct proc *p) +{ + struct lpt_data *sc = lptdata[LPTUNIT(minor(dev))]; + int err; + + if(sc->sc_flags & LP_BYPASS) + goto end_close; + + if ((err = lpt_request_ppbus(sc, PPB_WAIT|PPB_INTR)) != 0) + return (err); + + sc->sc_state &= ~OPEN; + + /* if the last write was interrupted, don't complete it */ + if((!(sc->sc_state & INTERRUPTED)) && (sc->sc_irq & LP_USE_IRQ)) + while ((ppb_rstr(&sc->lpt_dev) & + (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) != + (LPS_SEL|LPS_NBSY|LPS_NERR) || sc->sc_xfercnt) + /* wait 1/4 second, give up if we get a signal */ + if (tsleep((caddr_t)sc, LPPRI|PCATCH, + "lpclose", hz) != EWOULDBLOCK) + break; + + ppb_wctr(&sc->lpt_dev, LPC_NINIT); + brelse(sc->sc_inbuf); + brelse(sc->sc_statbuf); + +end_close: + /* release the bus anyway */ + lpt_release_ppbus(sc); + + sc->sc_state = 0; + sc->sc_xfercnt = 0; + lprintf(("closed.\n")); + return(0); +} + +/* + * lpt_pushbytes() + * Workhorse for actually spinning and writing bytes to printer + * Derived from lpa.c + * Originally by ? + * + * This code is only used when we are polling the port + */ +static int +lpt_pushbytes(struct lpt_data *sc) +{ + int spin, err, tic; + char ch; + + lprintf(("p")); + /* loop for every character .. */ + while (sc->sc_xfercnt > 0) { + /* printer data */ + ch = *(sc->sc_cp); + sc->sc_cp++; + sc->sc_xfercnt--; + + /* + * Wait for printer ready. + * Loop 20 usecs testing BUSY bit, then sleep + * for exponentially increasing timeout. (vak) + */ + for (spin = 0; NOT_READY(sc) && spin < MAX_SPIN; ++spin) + DELAY(1); /* XXX delay is NOT this accurate! */ + if (spin >= MAX_SPIN) { + tic = 0; + while (NOT_READY(sc)) { + /* + * Now sleep, every cycle a + * little longer .. + */ + tic = tic + tic + 1; + /* + * But no more than 10 seconds. (vak) + */ + if (tic > MAX_SLEEP) + tic = MAX_SLEEP; + err = tsleep((caddr_t)sc, LPPRI, + LPT_NAME "poll", tic); + if (err != EWOULDBLOCK) { + return (err); + } + } + } + + /* output data */ + ppb_wdtr(&sc->lpt_dev, ch); + /* strobe */ + ppb_wctr(&sc->lpt_dev, sc->sc_control|LPC_STB); + ppb_wctr(&sc->lpt_dev, sc->sc_control); + + } + return(0); +} + +/* + * lptread --retrieve printer status in IEEE1284 NIBBLE mode + */ + +static int +lptread(dev_t dev, struct uio *uio, int ioflag) +{ + struct lpt_data *sc = lptdata[LPTUNIT(minor(dev))]; + int error = 0, len; + + if ((error = ppb_1284_negociate(&sc->lpt_dev, PPB_NIBBLE, 0))) + return (error); + + /* read data in an other buffer, read/write may be simultaneous */ + len = 0; + while (uio->uio_resid) { + if ((error = ppb_1284_read(&sc->lpt_dev, PPB_NIBBLE, + sc->sc_statbuf->b_data, min(BUFSTATSIZE, + uio->uio_resid), &len))) { + goto error; + } + + if (!len) + goto error; /* no more data */ + + if ((error = uiomove(sc->sc_statbuf->b_data, len, uio))) + goto error; + } + +error: + ppb_1284_terminate(&sc->lpt_dev); + return (error); +} + +/* + * lptwrite --copy a line from user space to a local buffer, then call + * putc to get the chars moved to the output queue. + * + * Flagging of interrupted write added. + */ + +static int +lptwrite(dev_t dev, struct uio *uio, int ioflag) +{ + register unsigned n; + int pl, err; + u_int unit = LPTUNIT(minor(dev)); + struct lpt_data *sc = lptdata[LPTUNIT(minor(dev))]; + + if(sc->sc_flags & LP_BYPASS) { + /* we can't do writes in bypass mode */ + return(EPERM); + } + + /* request the ppbus only if we don't have it already */ + if ((err = lpt_request_ppbus(sc, PPB_WAIT|PPB_INTR)) != 0) + return (err); + + sc->sc_state &= ~INTERRUPTED; + while ((n = min(BUFSIZE, uio->uio_resid)) != 0) { + sc->sc_cp = sc->sc_inbuf->b_data ; + uiomove(sc->sc_cp, n, uio); + sc->sc_xfercnt = n ; + + if (sc->sc_irq & LP_ENABLE_EXT) { + /* try any extended mode */ + err = ppb_write(&sc->lpt_dev, sc->sc_cp, + sc->sc_xfercnt, 0); + switch (err) { + case 0: + /* if not all data was sent, we could rely + * on polling for the last bytes */ + sc->sc_xfercnt = 0; + break; + case EINTR: + sc->sc_state |= INTERRUPTED; + return(err); + case EINVAL: + /* advanced mode not avail */ + log(LOG_NOTICE, LPT_NAME "%d: advanced mode not avail, polling\n", unit); + break; + default: + return(err); + } + } else while ((sc->sc_xfercnt > 0)&&(sc->sc_irq & LP_USE_IRQ)) { + lprintf(("i")); + /* if the printer is ready for a char, */ + /* give it one */ + if ((sc->sc_state & OBUSY) == 0){ + lprintf(("\nC %d. ", sc->sc_xfercnt)); + pl = spltty(); + lpt_intr(sc->lpt_unit); + (void) splx(pl); + } + lprintf(("W ")); + if (sc->sc_state & OBUSY) + if ((err = tsleep((caddr_t)sc, + LPPRI|PCATCH, LPT_NAME "write", 0))) { + sc->sc_state |= INTERRUPTED; + return(err); + } + } + + /* check to see if we must do a polled write */ + if(!(sc->sc_irq & LP_USE_IRQ) && (sc->sc_xfercnt)) { + lprintf(("p")); + + err = lpt_pushbytes(sc); + + if (err) + return(err); + } + } + + /* we have not been interrupted, release the ppbus */ + lpt_release_ppbus(sc); + + return(0); +} + +/* + * lpt_intr -- handle printer interrupts which occur when the printer is + * ready to accept another char. + * + * do checking for interrupted write call. + */ + +static void +lpt_intr(int unit) +{ + struct lpt_data *sc = lptdata[unit]; + int sts; + int i; + + /* we must own the bus to use it */ + if ((sc->sc_state & HAVEBUS) == 0) + return; + + /* + * Is printer online and ready for output? + * + * Avoid falling back to lptout() too quickly. First spin-loop + * to see if the printer will become ready ``really soon now''. + */ + for (i = 0; i < 100 && + ((sts=ppb_rstr(&sc->lpt_dev)) & RDY_MASK) != LP_READY; i++) ; + + if ((sts & RDY_MASK) == LP_READY) { + sc->sc_state = (sc->sc_state | OBUSY) & ~EERROR; + sc->sc_backoff = hz/LPTOUTINITIAL; + + if (sc->sc_xfercnt) { + /* send char */ + /*lprintf(("%x ", *sc->sc_cp)); */ + ppb_wdtr(&sc->lpt_dev, *sc->sc_cp++) ; + ppb_wctr(&sc->lpt_dev, sc->sc_control|LPC_STB); + /* DELAY(X) */ + ppb_wctr(&sc->lpt_dev, sc->sc_control); + + /* any more data for printer */ + if(--(sc->sc_xfercnt) > 0) return; + } + + /* + * No more data waiting for printer. + * Wakeup is not done if write call was interrupted. + */ + sc->sc_state &= ~OBUSY; + + if(!(sc->sc_state & INTERRUPTED)) + wakeup((caddr_t)sc); + lprintf(("w ")); + return; + } else { /* check for error */ + if(((sts & (LPS_NERR | LPS_OUT) ) != LPS_NERR) && + (sc->sc_state & OPEN)) + sc->sc_state |= EERROR; + /* lptout() will jump in and try to restart. */ + } + lprintf(("sts %x ", sts)); +} + +static void +lptintr(int unit) +{ + /* call the interrupt at required spl level */ + int s = spltty(); + + lpt_intr(unit); + + splx(s); + return; +} + +static int +lptioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + int error = 0; + struct lpt_data *sc; + u_int unit = LPTUNIT(minor(dev)); + u_char old_sc_irq; /* old printer IRQ status */ + + sc = lptdata[unit]; + + switch (cmd) { + case LPT_IRQ : + if(sc->sc_irq & LP_HAS_IRQ) { + /* + * NOTE: + * If the IRQ status is changed, + * this will only be visible on the + * next open. + * + * If interrupt status changes, + * this gets syslog'd. + */ + old_sc_irq = sc->sc_irq; + switch(*(int*)data) { + case 0: + sc->sc_irq &= (~LP_ENABLE_IRQ); + break; + case 1: + sc->sc_irq &= (~LP_ENABLE_EXT); + sc->sc_irq |= LP_ENABLE_IRQ; + break; + case 2: + /* classic irq based transfer and advanced + * modes are in conflict + */ + sc->sc_irq &= (~LP_ENABLE_IRQ); + sc->sc_irq |= LP_ENABLE_EXT; + break; + case 3: + sc->sc_irq &= (~LP_ENABLE_EXT); + break; + default: + break; + } + + if (old_sc_irq != sc->sc_irq ) + log(LOG_NOTICE, LPT_NAME "%d: switched to %s %s mode\n", + unit, + (sc->sc_irq & LP_ENABLE_IRQ)? + "interrupt-driven":"polled", + (sc->sc_irq & LP_ENABLE_EXT)? + "extended":"standard"); + } else /* polled port */ + error = EOPNOTSUPP; + break; + default: + error = ENODEV; + } + + return(error); +} + +static lpt_devsw_installed = 0; + +static void +lpt_drvinit(void *unused) +{ + dev_t dev; + + if( ! lpt_devsw_installed ) { + dev = makedev(CDEV_MAJOR, 0); + cdevsw_add(&dev,&lpt_cdevsw, NULL); + lpt_devsw_installed = 1; + } +} + +SYSINIT(lptdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,lpt_drvinit,NULL) diff --git a/sys/dev/ppbus/lpt.h b/sys/dev/ppbus/lpt.h new file mode 100644 index 000000000000..6be7f734b013 --- /dev/null +++ b/sys/dev/ppbus/lpt.h @@ -0,0 +1,82 @@ +/*- + * Copyright (c) 1997 Nicolas Souchu + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + * Distantly from : + * @(#)lptreg.h 1.1 (Berkeley) 12/19/90 + * Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp + * From Id: nlpt.h,v 1.3 1999/01/10 12:04:54 nsouch Exp + * + * $Id$ + */ +#ifndef __NLPT_H +#define __NLPT_H + +#define LPS_NERR 0x08 /* printer no error */ +#define LPS_SEL 0x10 /* printer selected */ +#define LPS_OUT 0x20 /* printer out of paper */ +#define LPS_NACK 0x40 /* printer no ack of data */ +#define LPS_NBSY 0x80 /* printer no ack of data */ + +#define LPC_STB 0x01 /* strobe data to printer */ +#define LPC_AUTOL 0x02 /* automatic linefeed */ +#define LPC_NINIT 0x04 /* initialize printer */ +#define LPC_SEL 0x08 /* printer selected */ +#define LPC_ENA 0x10 /* enable IRQ */ + +struct lpt_data { + unsigned short lpt_unit; + + struct ppb_device lpt_dev; + + short sc_state; + /* default case: negative prime, negative ack, handshake strobe, + prime once */ + u_char sc_control; + char sc_flags; +#define LP_POS_INIT 0x04 /* if we are a postive init signal */ +#define LP_POS_ACK 0x08 /* if we are a positive going ack */ +#define LP_NO_PRIME 0x10 /* don't prime the printer at all */ +#define LP_PRIMEOPEN 0x20 /* prime on every open */ +#define LP_AUTOLF 0x40 /* tell printer to do an automatic lf */ +#define LP_BYPASS 0x80 /* bypass printer ready checks */ + struct buf *sc_inbuf; + struct buf *sc_statbuf; + short sc_xfercnt ; + char sc_primed; + char *sc_cp ; + u_short sc_irq ; /* IRQ status of port */ +#define LP_HAS_IRQ 0x01 /* we have an irq available */ +#define LP_USE_IRQ 0x02 /* we are using our irq */ +#define LP_ENABLE_IRQ 0x04 /* enable IRQ on open */ +#define LP_ENABLE_EXT 0x10 /* we shall use advanced mode when possible */ + u_char sc_backoff ; /* time to call lptout() again */ + +#ifdef DEVFS + void *devfs_token; + void *devfs_token_ctl; +#endif +}; + +#endif diff --git a/sys/dev/ppbus/nlpt.c b/sys/dev/ppbus/nlpt.c deleted file mode 100644 index b28c21fea2fb..000000000000 --- a/sys/dev/ppbus/nlpt.c +++ /dev/null @@ -1,920 +0,0 @@ -/* - * 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. - * - * from: unknown origin, 386BSD 0.1 - * From Id: lpt.c,v 1.55.2.1 1996/11/12 09:08:38 phk Exp - * $Id: nlpt.c,v 1.13 1999/01/27 20:09:19 dillon Exp $ - */ - -/* - * Device Driver for AT parallel printer port - * Written by William Jolitz 12/18/90 - */ - -/* - * Updated for ppbus by Nicolas Souchu - * [Mon Jul 28 1997] - */ - - -#ifdef KERNEL -#include "opt_devfs.h" - -#include -#include -#include -#include -#include -#include -#include -#ifdef DEVFS -#include -#endif /*DEVFS*/ -#include - -#include -#include -#endif /*KERNEL*/ - -#include -#include -#include - -#include "opt_nlpt.h" - -#ifndef NLPT_DEBUG -#define nlprintf(args) -#else -#define nlprintf(args) \ - do { \ - if (nlptflag) \ - printf args; \ - } while (0) -static int volatile nlptflag = 1; -#endif - -#define LPINITRDY 4 /* wait up to 4 seconds for a ready */ -#define LPTOUTINITIAL 10 /* initial timeout to wait for ready 1/10 s */ -#define LPTOUTMAX 1 /* maximal timeout 1 s */ -#define LPPRI (PZERO+8) -#define BUFSIZE 1024 -#define BUFSTATSIZE 32 - -#define LPTUNIT(s) ((s)&0x03) -#define LPTFLAGS(s) ((s)&0xfc) - -static int nlpt = 0; -#define MAXLPT 8 /* XXX not much better! */ -static struct lpt_data *lptdata[MAXLPT]; - -#define LPT_NAME "nlpt" /* our official name */ - -static timeout_t nlptout; -static int nlpt_port_test(struct lpt_data *sc, u_char data, u_char mask); -static int nlpt_detect(struct lpt_data *sc); - -/* - * Make ourselves visible as a ppbus driver - */ - -static struct ppb_device *nlptprobe(struct ppb_data *ppb); -static int nlptattach(struct ppb_device *dev); -static void nlptintr(int unit); -static void nlpt_drvinit(void *unused); - -static void nlpt_intr(int unit); /* without spls */ - -#ifdef KERNEL - -static struct ppb_driver nlptdriver = { - nlptprobe, nlptattach, LPT_NAME -}; -DATA_SET(ppbdriver_set, nlptdriver); - -#endif /* KERNEL */ - -/* bits for state */ -#define OPEN (1<<0) /* device is open */ -#define ASLP (1<<1) /* awaiting draining of printer */ -#define EERROR (1<<2) /* error was received from printer */ -#define OBUSY (1<<3) /* printer is busy doing output */ -#define LPTOUT (1<<4) /* timeout while not selected */ -#define TOUT (1<<5) /* timeout while not selected */ -#define LPTINIT (1<<6) /* waiting to initialize for open */ -#define INTERRUPTED (1<<7) /* write call was interrupted */ - -#define HAVEBUS (1<<8) /* the driver owns the bus */ - - -/* status masks to interrogate printer status */ -#define RDY_MASK (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR) /* ready ? */ -#define LP_READY (LPS_SEL|LPS_NBSY|LPS_NERR) - -/* Printer Ready condition - from lpa.c */ -/* Only used in polling code */ -#define LPS_INVERT (LPS_NBSY | LPS_NACK | LPS_SEL | LPS_NERR) -#define LPS_MASK (LPS_NBSY | LPS_NACK | LPS_OUT | LPS_SEL | LPS_NERR) -#define NOT_READY(lpt) ((ppb_rstr(&(lpt)->lpt_dev)^LPS_INVERT)&LPS_MASK) - -#define MAX_SLEEP (hz*5) /* Timeout while waiting for device ready */ -#define MAX_SPIN 20 /* Max delay for device ready in usecs */ - - -static d_open_t nlptopen; -static d_close_t nlptclose; -static d_write_t nlptwrite; -static d_read_t nlptread; -static d_ioctl_t nlptioctl; - -#define CDEV_MAJOR 16 -static struct cdevsw nlpt_cdevsw = - { nlptopen, nlptclose, nlptread, nlptwrite, /*16*/ - nlptioctl, nullstop, nullreset, nodevtotty, /* lpt */ - seltrue, nommap, nostrat, LPT_NAME, NULL, -1 }; - -static int -lpt_request_ppbus(struct lpt_data *sc, int how) -{ - int error; - - if (sc->sc_state & HAVEBUS) - return (0); - - /* we have the bus only if the request succeded */ - if ((error = ppb_request_bus(&sc->lpt_dev, how)) == 0) - sc->sc_state |= HAVEBUS; - - return (error); -} - -static int -lpt_release_ppbus(struct lpt_data *sc) -{ - ppb_release_bus(&sc->lpt_dev); - sc->sc_state &= ~HAVEBUS; - - return (0); -} - -/* - * Internal routine to nlptprobe to do port tests of one byte value - */ -static int -nlpt_port_test(struct lpt_data *sc, u_char data, u_char mask) -{ - int temp, timeout; - - data = data & mask; - ppb_wdtr(&sc->lpt_dev, data); - timeout = 10000; - do { - DELAY(10); - temp = ppb_rdtr(&sc->lpt_dev) & mask; - } - while (temp != data && --timeout); - nlprintf(("out=%x\tin=%x\ttout=%d\n", data, temp, timeout)); - return (temp == data); -} - -/* - * Probe simplified by replacing multiple loops with a hardcoded - * test pattern - 1999/02/08 des@freebsd.org - * - * New lpt port probe Geoff Rehmet - Rhodes University - 14/2/94 - * Based partially on Rod Grimes' printer probe - * - * Logic: - * 1) If no port address was given, use the bios detected ports - * and autodetect what ports the printers are on. - * 2) Otherwise, probe the data port at the address given, - * using the method in Rod Grimes' port probe. - * (Much code ripped off directly from Rod's probe.) - * - * Comments from Rod's probe: - * Logic: - * 1) You should be able to write to and read back the same value - * to the data port. Do an alternating zeros, alternating ones, - * walking zero, and walking one test to check for stuck bits. - * - * 2) You should be able to write to and read back the same value - * to the control port lower 5 bits, the upper 3 bits are reserved - * per the IBM PC technical reference manauls and different boards - * do different things with them. Do an alternating zeros, alternating - * ones, walking zero, and walking one test to check for stuck bits. - * - * Some printers drag the strobe line down when the are powered off - * so this bit has been masked out of the control port test. - * - * XXX Some printers may not like a fast pulse on init or strobe, I - * don't know at this point, if that becomes a problem these bits - * should be turned off in the mask byte for the control port test. - * - * We are finally left with a mask of 0x14, due to some printers - * being adamant about holding other bits high ........ - * - * Before probing the control port, we write a 0 to the data port - - * If not, some printers chuck out garbage when the strobe line - * gets toggled. - * - * 3) Set the data and control ports to a value of 0 - * - * This probe routine has been tested on Epson Lx-800, HP LJ3P, - * Epson FX-1170 and C.Itoh 8510RM - * printers. - * Quick exit on fail added. - */ -static int -nlpt_detect(struct lpt_data *sc) -{ - static u_char testbyte[18] = { - 0x55, /* alternating zeros */ - 0xaa, /* alternating ones */ - 0xfe, 0xfd, 0xfb, 0xf7, - 0xef, 0xdf, 0xbf, 0x7f, /* walking zero */ - 0x01, 0x02, 0x04, 0x08, - 0x10, 0x20, 0x40, 0x80 /* walking one */ - }; - int i, error, status; - - status = 1; /* assume success */ - - if ((error = lpt_request_ppbus(sc, PPB_DONTWAIT))) { - printf(LPT_NAME ": cannot alloc ppbus (%d)!\n", error); - status = 0; - goto end_probe; - } - - for (i = 0; i < 18 && status; i++) - if (!nlpt_port_test(sc, testbyte[i], 0xff)) { - status = 0; - goto end_probe; - } - -end_probe: - /* write 0's to control and data ports */ - ppb_wdtr(&sc->lpt_dev, 0); - ppb_wctr(&sc->lpt_dev, 0); - - lpt_release_ppbus(sc); - - return (status); -} - -/* - * nlptprobe() - */ -static struct ppb_device * -nlptprobe(struct ppb_data *ppb) -{ - struct lpt_data *sc; - - sc = (struct lpt_data *) malloc(sizeof(struct lpt_data), - M_TEMP, M_NOWAIT); - if (!sc) { - printf(LPT_NAME ": cannot malloc!\n"); - return (0); - } - bzero(sc, sizeof(struct lpt_data)); - - lptdata[nlpt] = sc; - - /* - * lpt dependent initialisation. - */ - sc->lpt_unit = nlpt; - - /* - * ppbus dependent initialisation. - */ - sc->lpt_dev.id_unit = sc->lpt_unit; - sc->lpt_dev.name = nlptdriver.name; - sc->lpt_dev.ppb = ppb; - sc->lpt_dev.intr = nlptintr; - - /* - * Now, try to detect the printer. - */ - if (!nlpt_detect(sc)) { - free(sc, M_TEMP); - return (0); - } - - /* Ok, go to next device on next probe */ - nlpt ++; - - return (&sc->lpt_dev); -} - -static int -nlptattach(struct ppb_device *dev) -{ - struct lpt_data *sc = lptdata[dev->id_unit]; - int error; - - /* - * Report ourselves - */ - printf(LPT_NAME "%d: on ppbus %d\n", - dev->id_unit, dev->ppb->ppb_link->adapter_unit); - - sc->sc_primed = 0; /* not primed yet */ - - if ((error = lpt_request_ppbus(sc, PPB_DONTWAIT))) { - printf(LPT_NAME ": cannot alloc ppbus (%d)!\n", error); - return (0); - } - - ppb_wctr(&sc->lpt_dev, LPC_NINIT); - - /* check if we can use interrupt, should be done by ppc stuff */ - nlprintf(("oldirq %x\n", sc->sc_irq)); - if (ppb_get_irq(&sc->lpt_dev)) { - sc->sc_irq = LP_HAS_IRQ | LP_USE_IRQ | LP_ENABLE_IRQ; - printf(LPT_NAME "%d: Interrupt-driven port\n", dev->id_unit); - } else { - sc->sc_irq = 0; - nlprintf((LPT_NAME "%d: Polled port\n", dev->id_unit)); - } - nlprintf(("irq %x\n", sc->sc_irq)); - - lpt_release_ppbus(sc); - -#ifdef DEVFS - sc->devfs_token = devfs_add_devswf(&nlpt_cdevsw, - dev->id_unit, DV_CHR, - UID_ROOT, GID_WHEEL, 0600, LPT_NAME "%d", dev->id_unit); - sc->devfs_token_ctl = devfs_add_devswf(&nlpt_cdevsw, - dev->id_unit | LP_BYPASS, DV_CHR, - UID_ROOT, GID_WHEEL, 0600, LPT_NAME "%d.ctl", dev->id_unit); -#endif - - return (1); -} - -static void -nlptout(void *arg) -{ - struct lpt_data *sc = arg; - int pl; - - nlprintf(("T %x ", ppb_rstr(&sc->lpt_dev))); - if (sc->sc_state & OPEN) { - sc->sc_backoff++; - if (sc->sc_backoff > hz/LPTOUTMAX) - sc->sc_backoff = sc->sc_backoff > hz/LPTOUTMAX; - timeout(nlptout, (caddr_t)sc, sc->sc_backoff); - } else - sc->sc_state &= ~TOUT; - - if (sc->sc_state & EERROR) - sc->sc_state &= ~EERROR; - - /* - * Avoid possible hangs do to missed interrupts - */ - if (sc->sc_xfercnt) { - pl = spltty(); - nlpt_intr(sc->lpt_unit); - splx(pl); - } else { - sc->sc_state &= ~OBUSY; - wakeup((caddr_t)sc); - } -} - -/* - * nlptopen -- reset the printer, then wait until it's selected and not busy. - * If LP_BYPASS flag is selected, then we do not try to select the - * printer -- this is just used for passing ioctls. - */ - -static int -nlptopen(dev_t dev, int flags, int fmt, struct proc *p) -{ - struct lpt_data *sc; - - int s; - int trys, err; - u_int unit = LPTUNIT(minor(dev)); - - if ((unit >= nlpt)) - return (ENXIO); - - sc = lptdata[unit]; - - if (sc->sc_state) { - nlprintf((LPT_NAME ": still open %x\n", sc->sc_state)); - return(EBUSY); - } else - sc->sc_state |= LPTINIT; - - sc->sc_flags = LPTFLAGS(minor(dev)); - - /* Check for open with BYPASS flag set. */ - if (sc->sc_flags & LP_BYPASS) { - sc->sc_state = OPEN; - return(0); - } - - /* request the ppbus only if we don't have it already */ - if ((err = lpt_request_ppbus(sc, PPB_WAIT|PPB_INTR)) != 0) - return (err); - - s = spltty(); - nlprintf((LPT_NAME " flags 0x%x\n", sc->sc_flags)); - - /* set IRQ status according to ENABLE_IRQ flag */ - if (sc->sc_irq & LP_ENABLE_IRQ) - sc->sc_irq |= LP_USE_IRQ; - else - sc->sc_irq &= ~LP_USE_IRQ; - - /* init printer */ - if ((sc->sc_flags & LP_NO_PRIME) == 0) { - if((sc->sc_flags & LP_PRIMEOPEN) || sc->sc_primed == 0) { - ppb_wctr(&sc->lpt_dev, 0); - sc->sc_primed++; - DELAY(500); - } - } - - ppb_wctr(&sc->lpt_dev, LPC_SEL|LPC_NINIT); - - /* wait till ready (printer running diagnostics) */ - trys = 0; - do { - /* ran out of waiting for the printer */ - if (trys++ >= LPINITRDY*4) { - splx(s); - sc->sc_state = 0; - nlprintf(("status %x\n", ppb_rstr(&sc->lpt_dev))); - - lpt_release_ppbus(sc); - return (EBUSY); - } - - /* wait 1/4 second, give up if we get a signal */ - if (tsleep((caddr_t)sc, LPPRI|PCATCH, "lptinit", hz/4) != - EWOULDBLOCK) { - sc->sc_state = 0; - splx(s); - - lpt_release_ppbus(sc); - return (EBUSY); - } - - /* is printer online and ready for output */ - } while ((ppb_rstr(&sc->lpt_dev) & - (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) != - (LPS_SEL|LPS_NBSY|LPS_NERR)); - - sc->sc_control = LPC_SEL|LPC_NINIT; - if (sc->sc_flags & LP_AUTOLF) - sc->sc_control |= LPC_AUTOL; - - /* enable interrupt if interrupt-driven */ - if (sc->sc_irq & LP_USE_IRQ) - sc->sc_control |= LPC_ENA; - - ppb_wctr(&sc->lpt_dev, sc->sc_control); - - sc->sc_state = OPEN; - sc->sc_inbuf = geteblk(BUFSIZE); - sc->sc_statbuf = geteblk(BUFSTATSIZE); - sc->sc_xfercnt = 0; - splx(s); - - /* release the ppbus */ - lpt_release_ppbus(sc); - - /* only use timeout if using interrupt */ - nlprintf(("irq %x\n", sc->sc_irq)); - if (sc->sc_irq & LP_USE_IRQ) { - sc->sc_state |= TOUT; - timeout(nlptout, (caddr_t)sc, - (sc->sc_backoff = hz/LPTOUTINITIAL)); - } - - nlprintf(("opened.\n")); - return(0); -} - -/* - * nlptclose -- close the device, free the local line buffer. - * - * Check for interrupted write call added. - */ - -static int -nlptclose(dev_t dev, int flags, int fmt, struct proc *p) -{ - struct lpt_data *sc = lptdata[LPTUNIT(minor(dev))]; - int err; - - if(sc->sc_flags & LP_BYPASS) - goto end_close; - - if ((err = lpt_request_ppbus(sc, PPB_WAIT|PPB_INTR)) != 0) - return (err); - - sc->sc_state &= ~OPEN; - - /* if the last write was interrupted, don't complete it */ - if((!(sc->sc_state & INTERRUPTED)) && (sc->sc_irq & LP_USE_IRQ)) - while ((ppb_rstr(&sc->lpt_dev) & - (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) != - (LPS_SEL|LPS_NBSY|LPS_NERR) || sc->sc_xfercnt) - /* wait 1/4 second, give up if we get a signal */ - if (tsleep((caddr_t)sc, LPPRI|PCATCH, - "lpclose", hz) != EWOULDBLOCK) - break; - - ppb_wctr(&sc->lpt_dev, LPC_NINIT); - brelse(sc->sc_inbuf); - brelse(sc->sc_statbuf); - -end_close: - /* release the bus anyway */ - lpt_release_ppbus(sc); - - sc->sc_state = 0; - sc->sc_xfercnt = 0; - nlprintf(("closed.\n")); - return(0); -} - -/* - * nlpt_pushbytes() - * Workhorse for actually spinning and writing bytes to printer - * Derived from lpa.c - * Originally by ? - * - * This code is only used when we are polling the port - */ -static int -nlpt_pushbytes(struct lpt_data *sc) -{ - int spin, err, tic; - char ch; - - nlprintf(("p")); - /* loop for every character .. */ - while (sc->sc_xfercnt > 0) { - /* printer data */ - ch = *(sc->sc_cp); - sc->sc_cp++; - sc->sc_xfercnt--; - - /* - * Wait for printer ready. - * Loop 20 usecs testing BUSY bit, then sleep - * for exponentially increasing timeout. (vak) - */ - for (spin = 0; NOT_READY(sc) && spin < MAX_SPIN; ++spin) - DELAY(1); /* XXX delay is NOT this accurate! */ - if (spin >= MAX_SPIN) { - tic = 0; - while (NOT_READY(sc)) { - /* - * Now sleep, every cycle a - * little longer .. - */ - tic = tic + tic + 1; - /* - * But no more than 10 seconds. (vak) - */ - if (tic > MAX_SLEEP) - tic = MAX_SLEEP; - err = tsleep((caddr_t)sc, LPPRI, - LPT_NAME "poll", tic); - if (err != EWOULDBLOCK) { - return (err); - } - } - } - - /* output data */ - ppb_wdtr(&sc->lpt_dev, ch); - /* strobe */ - ppb_wctr(&sc->lpt_dev, sc->sc_control|LPC_STB); - ppb_wctr(&sc->lpt_dev, sc->sc_control); - - } - return(0); -} - -/* - * nlptread --retrieve printer status in IEEE1284 NIBBLE mode - */ - -static int -nlptread(dev_t dev, struct uio *uio, int ioflag) -{ - struct lpt_data *sc = lptdata[LPTUNIT(minor(dev))]; - int error = 0, len; - - if ((error = ppb_1284_negociate(&sc->lpt_dev, PPB_NIBBLE, 0))) - return (error); - - /* read data in an other buffer, read/write may be simultaneous */ - len = 0; - while (uio->uio_resid) { - if ((error = ppb_1284_read(&sc->lpt_dev, PPB_NIBBLE, - sc->sc_statbuf->b_data, min(BUFSTATSIZE, - uio->uio_resid), &len))) { - goto error; - } - - if (!len) - goto error; /* no more data */ - - if ((error = uiomove(sc->sc_statbuf->b_data, len, uio))) - goto error; - } - -error: - ppb_1284_terminate(&sc->lpt_dev); - return (error); -} - -/* - * nlptwrite --copy a line from user space to a local buffer, then call - * putc to get the chars moved to the output queue. - * - * Flagging of interrupted write added. - */ - -static int -nlptwrite(dev_t dev, struct uio *uio, int ioflag) -{ - register unsigned n; - int pl, err; - u_int unit = LPTUNIT(minor(dev)); - struct lpt_data *sc = lptdata[LPTUNIT(minor(dev))]; - - if(sc->sc_flags & LP_BYPASS) { - /* we can't do writes in bypass mode */ - return(EPERM); - } - - /* request the ppbus only if we don't have it already */ - if ((err = lpt_request_ppbus(sc, PPB_WAIT|PPB_INTR)) != 0) - return (err); - - sc->sc_state &= ~INTERRUPTED; - while ((n = min(BUFSIZE, uio->uio_resid)) != 0) { - sc->sc_cp = sc->sc_inbuf->b_data ; - uiomove(sc->sc_cp, n, uio); - sc->sc_xfercnt = n ; - - if (sc->sc_irq & LP_ENABLE_EXT) { - /* try any extended mode */ - err = ppb_write(&sc->lpt_dev, sc->sc_cp, - sc->sc_xfercnt, 0); - switch (err) { - case 0: - /* if not all data was sent, we could rely - * on polling for the last bytes */ - sc->sc_xfercnt = 0; - break; - case EINTR: - sc->sc_state |= INTERRUPTED; - return(err); - case EINVAL: - /* advanced mode not avail */ - log(LOG_NOTICE, LPT_NAME "%d: advanced mode not avail, polling\n", unit); - break; - default: - return(err); - } - } else while ((sc->sc_xfercnt > 0)&&(sc->sc_irq & LP_USE_IRQ)) { - nlprintf(("i")); - /* if the printer is ready for a char, */ - /* give it one */ - if ((sc->sc_state & OBUSY) == 0){ - nlprintf(("\nC %d. ", sc->sc_xfercnt)); - pl = spltty(); - nlpt_intr(sc->lpt_unit); - (void) splx(pl); - } - nlprintf(("W ")); - if (sc->sc_state & OBUSY) - if ((err = tsleep((caddr_t)sc, - LPPRI|PCATCH, LPT_NAME "write", 0))) { - sc->sc_state |= INTERRUPTED; - return(err); - } - } - - /* check to see if we must do a polled write */ - if(!(sc->sc_irq & LP_USE_IRQ) && (sc->sc_xfercnt)) { - nlprintf(("p")); - - err = nlpt_pushbytes(sc); - - if (err) - return(err); - } - } - - /* we have not been interrupted, release the ppbus */ - lpt_release_ppbus(sc); - - return(0); -} - -/* - * nlpt_intr -- handle printer interrupts which occur when the printer is - * ready to accept another char. - * - * do checking for interrupted write call. - */ - -static void -nlpt_intr(int unit) -{ - struct lpt_data *sc = lptdata[unit]; - int sts; - int i; - - /* we must own the bus to use it */ - if ((sc->sc_state & HAVEBUS) == 0) - return; - - /* - * Is printer online and ready for output? - * - * Avoid falling back to nlptout() too quickly. First spin-loop - * to see if the printer will become ready ``really soon now''. - */ - for (i = 0; i < 100 && - ((sts=ppb_rstr(&sc->lpt_dev)) & RDY_MASK) != LP_READY; i++) ; - - if ((sts & RDY_MASK) == LP_READY) { - sc->sc_state = (sc->sc_state | OBUSY) & ~EERROR; - sc->sc_backoff = hz/LPTOUTINITIAL; - - if (sc->sc_xfercnt) { - /* send char */ - /*nlprintf(("%x ", *sc->sc_cp)); */ - ppb_wdtr(&sc->lpt_dev, *sc->sc_cp++) ; - ppb_wctr(&sc->lpt_dev, sc->sc_control|LPC_STB); - /* DELAY(X) */ - ppb_wctr(&sc->lpt_dev, sc->sc_control); - - /* any more data for printer */ - if(--(sc->sc_xfercnt) > 0) return; - } - - /* - * No more data waiting for printer. - * Wakeup is not done if write call was interrupted. - */ - sc->sc_state &= ~OBUSY; - - if(!(sc->sc_state & INTERRUPTED)) - wakeup((caddr_t)sc); - nlprintf(("w ")); - return; - } else { /* check for error */ - if(((sts & (LPS_NERR | LPS_OUT) ) != LPS_NERR) && - (sc->sc_state & OPEN)) - sc->sc_state |= EERROR; - /* nlptout() will jump in and try to restart. */ - } - nlprintf(("sts %x ", sts)); -} - -static void -nlptintr(int unit) -{ - /* call the interrupt at required spl level */ - int s = spltty(); - - nlpt_intr(unit); - - splx(s); - return; -} - -static int -nlptioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - int error = 0; - struct lpt_data *sc; - u_int unit = LPTUNIT(minor(dev)); - u_char old_sc_irq; /* old printer IRQ status */ - - sc = lptdata[unit]; - - switch (cmd) { - case LPT_IRQ : - if(sc->sc_irq & LP_HAS_IRQ) { - /* - * NOTE: - * If the IRQ status is changed, - * this will only be visible on the - * next open. - * - * If interrupt status changes, - * this gets syslog'd. - */ - old_sc_irq = sc->sc_irq; - switch(*(int*)data) { - case 0: - sc->sc_irq &= (~LP_ENABLE_IRQ); - break; - case 1: - sc->sc_irq &= (~LP_ENABLE_EXT); - sc->sc_irq |= LP_ENABLE_IRQ; - break; - case 2: - /* classic irq based transfer and advanced - * modes are in conflict - */ - sc->sc_irq &= (~LP_ENABLE_IRQ); - sc->sc_irq |= LP_ENABLE_EXT; - break; - case 3: - sc->sc_irq &= (~LP_ENABLE_EXT); - break; - default: - break; - } - - if (old_sc_irq != sc->sc_irq ) - log(LOG_NOTICE, LPT_NAME "%d: switched to %s %s mode\n", - unit, - (sc->sc_irq & LP_ENABLE_IRQ)? - "interrupt-driven":"polled", - (sc->sc_irq & LP_ENABLE_EXT)? - "extended":"standard"); - } else /* polled port */ - error = EOPNOTSUPP; - break; - default: - error = ENODEV; - } - - return(error); -} - -static nlpt_devsw_installed = 0; - -static void -nlpt_drvinit(void *unused) -{ - dev_t dev; - - if( ! nlpt_devsw_installed ) { - dev = makedev(CDEV_MAJOR, 0); - cdevsw_add(&dev,&nlpt_cdevsw, NULL); - nlpt_devsw_installed = 1; - } -} - -SYSINIT(nlptdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,nlpt_drvinit,NULL) diff --git a/sys/dev/ppbus/nlpt.h b/sys/dev/ppbus/nlpt.h deleted file mode 100644 index 31292b9f7ed7..000000000000 --- a/sys/dev/ppbus/nlpt.h +++ /dev/null @@ -1,81 +0,0 @@ -/*- - * Copyright (c) 1997 Nicolas Souchu - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. - * - * Distantly from : - * @(#)lptreg.h 1.1 (Berkeley) 12/19/90 - * Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp - * - * $Id: nlpt.h,v 1.2 1997/08/16 14:05:32 msmith Exp $ - */ -#ifndef __NLPT_H -#define __NLPT_H - -#define LPS_NERR 0x08 /* printer no error */ -#define LPS_SEL 0x10 /* printer selected */ -#define LPS_OUT 0x20 /* printer out of paper */ -#define LPS_NACK 0x40 /* printer no ack of data */ -#define LPS_NBSY 0x80 /* printer no ack of data */ - -#define LPC_STB 0x01 /* strobe data to printer */ -#define LPC_AUTOL 0x02 /* automatic linefeed */ -#define LPC_NINIT 0x04 /* initialize printer */ -#define LPC_SEL 0x08 /* printer selected */ -#define LPC_ENA 0x10 /* enable IRQ */ - -struct lpt_data { - unsigned short lpt_unit; - - struct ppb_device lpt_dev; - - short sc_state; - /* default case: negative prime, negative ack, handshake strobe, - prime once */ - u_char sc_control; - char sc_flags; -#define LP_POS_INIT 0x04 /* if we are a postive init signal */ -#define LP_POS_ACK 0x08 /* if we are a positive going ack */ -#define LP_NO_PRIME 0x10 /* don't prime the printer at all */ -#define LP_PRIMEOPEN 0x20 /* prime on every open */ -#define LP_AUTOLF 0x40 /* tell printer to do an automatic lf */ -#define LP_BYPASS 0x80 /* bypass printer ready checks */ - struct buf *sc_inbuf; - struct buf *sc_statbuf; - short sc_xfercnt ; - char sc_primed; - char *sc_cp ; - u_short sc_irq ; /* IRQ status of port */ -#define LP_HAS_IRQ 0x01 /* we have an irq available */ -#define LP_USE_IRQ 0x02 /* we are using our irq */ -#define LP_ENABLE_IRQ 0x04 /* enable IRQ on open */ -#define LP_ENABLE_EXT 0x10 /* we shall use advanced mode when possible */ - u_char sc_backoff ; /* time to call lptout() again */ - -#ifdef DEVFS - void *devfs_token; - void *devfs_token_ctl; -#endif -}; - -#endif diff --git a/sys/dev/ppbus/ppi.c b/sys/dev/ppbus/ppi.c index 7b04ce4fd629..8eecd79e71b4 100644 --- a/sys/dev/ppbus/ppi.c +++ b/sys/dev/ppbus/ppi.c @@ -23,7 +23,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: ppi.c,v 1.10 1999/01/27 21:49:53 dillon Exp $ + * $Id: ppi.c,v 1.11 1999/01/30 15:35:39 nsouch Exp $ * */ #include "ppi.h" @@ -530,49 +530,6 @@ ppiioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) return (error); } -#ifdef PPI_MODULE - -MOD_DEV(ppi, LM_DT_CHAR, CDEV_MAJOR, &ppi_cdevsw); - -static int -ppi_load(struct lkm_table *lkmtp, int cmd) -{ - struct ppb_data *ppb; - struct ppb_device *dev; - int i; - - for (ppb = ppb_next_bus(NULL); ppb; ppb = ppb_next_bus(ppb)) { - - dev = ppiprobe(ppb); - ppiattach(dev); - - ppb_attach_device(dev); - } - - return (0); -} - -static int -ppi_unload(struct lkm_table *lkmtp, int cmd) -{ - int i; - - for (i = nppi-1; i > 0; i--) { - ppb_remove_device(&ppidata[i]->ppi_dev); - free(ppidata[i], M_TEMP); - } - - return (0); -} - -int -ppi_mod(struct lkm_table *lkmtp, int cmd, int ver) -{ - DISPATCH(lkmtp, cmd, ver, ppi_load, ppi_unload, lkm_nullcmd); -} - -#endif /* PPI_MODULE */ - static ppi_devsw_installed = 0; static void ppi_drvinit(void *unused) -- cgit v1.2.3