[unix-history] / usr / src / sys / vax / uba / lp.c

/*	lp.c	4.17	81/03/21	*/

#include "lp.h"
#if NLP > 0
/*
 * LP-11 Line printer driver
 *
 * This driver has been modified to work on printers where
 * leaving IENABLE set would cause continuous interrupts.
 *
 * TODO:
 *	Test driver
 *	Test driver on multiple printers
 */

#include "../h/param.h"
#include "../h/dir.h"
#include "../h/user.h"
#include "../h/buf.h"
#include "../h/systm.h"
#include "../h/map.h"
#include "../h/pte.h"
#include "../h/ubavar.h"
#include "../h/ioctl.h"
#include "../h/tty.h"

#define	LPPRI	(PZERO+8)
#define	IENABLE	0100
#define	DONE	0200
#define	ERROR	0100000
#define	LPLWAT	650
#define	LPHWAT	800

#define MAXCOL	132
#define CAP	1

#define LPUNIT(dev) (minor(dev) >> 3)

struct lpdevice {
	short	lpsr;
	short	lpbuf;
};

struct lp_softc {
	struct	clist sc_outq;
	int	sc_state;
	int	sc_physcol;
	int	sc_logcol;
	int	sc_physline;
	char	sc_flags;
	int	sc_lpchar;
	struct	buf *sc_inbuf;
} lp_softc[NLP];

struct uba_device *lpinfo[NLP];

int lpprobe(), lpattach(), lptout();
u_short lpstd[] = { 0177514 };
struct uba_driver lpdriver =
	{ lpprobe, 0, lpattach, 0, lpstd, "lp", lpinfo };

/* bits for state */
#define	OPEN		1	/* device is open */
#define	TOUT		2	/* timeout is active */
#define	MOD		4	/* device state has been modified */
#define	ASLP		8	/* awaiting draining of printer */

extern	lbolt;
int	lptout();

lpattach(ui)
	struct uba_device *ui;
{
	register struct lp_softc *sc;

	sc = &lp_softc[ui->ui_unit];
	sc->sc_lpchar = -1;
}

lpprobe(reg)
	caddr_t reg;
{
	register int br, cvec;			/* value-result */
	register struct lpdevice *lpaddr = (struct lpdevice *)reg;

	lpaddr->lpsr = IENABLE;
	DELAY(5);
	lpaddr->lpsr = 0;
}

/*ARGSUSED*/
lpopen(dev, flag)
	dev_t dev;
	int flag;
{
	register int unit;
	register struct lpdevice *lpaddr;
	register struct lp_softc *sc;
	register struct uba_device *ui;

	if ((unit = LPUNIT(dev)) >= NLP ||
	    (sc = &lp_softc[unit])->sc_state&OPEN ||
	    (ui = lpinfo[unit]) == 0 || ui->ui_alive == 0) {
		u.u_error = ENXIO;
		return;
	}
	lpaddr = (struct lpdevice *)ui->ui_addr;
	if (lpaddr->lpsr&ERROR) {
		u.u_error = EIO;
		return;
	}
	sc->sc_state |= OPEN;
	sc->sc_inbuf = geteblk();
	sc->sc_flags = minor(dev) & 07;
	(void) spl4();
	if ((sc->sc_state&TOUT) == 0) {
		sc->sc_state |= TOUT;
		timeout(lptout, dev, 10*hz);
	}
	(void) spl0();
	lpcanon(dev, '\f');
}

/*ARGSUSED*/
lpclose(dev, flag)
	dev_t dev;
	int flag;
{
	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];

	lpcanon(dev, '\f');
	brelse(sc->sc_inbuf);
	sc->sc_state &= ~OPEN;
}

lpwrite(dev)
	dev_t dev;
{
	register int n;
	register char *cp;
	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];

	while (n = min(BSIZE, u.u_count)) {
		cp = sc->sc_inbuf->b_un.b_addr;
		iomove(cp, n, B_WRITE);
		do
			lpcanon(dev, *cp++);
		while (--n);
	}
}

lpcanon(dev, c)
	dev_t dev;
	register int c;
{
	register int logcol, physcol;
	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];

	if (sc->sc_flags&CAP) {
		register c2;

		if (c>='a' && c<='z')
			c += 'A'-'a'; else
		switch (c) {

		case '{':
			c2 = '(';
			goto esc;

		case '}':
			c2 = ')';
			goto esc;

		case '`':
			c2 = '\'';
			goto esc;

		case '|':
			c2 = '!';
			goto esc;

		case '~':
			c2 = '^';

		esc:
			lpcanon(dev, c2);
			sc->sc_logcol--;
			c = '-';
		}
	}
	logcol = sc->sc_logcol;
	physcol = sc->sc_physcol;
	if (c == ' ')
		logcol++;
	else switch(c) {

	case '\t':
		logcol = (logcol+8) & ~7;
		break;

	case '\f':
		if (sc->sc_physline == 0 && physcol == 0)
			break;
		/* fall into ... */

	case '\n':
		lpoutput(dev, c);
		if (c == '\f')
			sc->sc_physline = 0;
		else
			sc->sc_physline++;
		physcol = 0;
		/* fall into ... */

	case '\r':
		logcol = 0;
		(void) spl4();
		lpintr(LPUNIT(dev));
		(void) spl0();
		break;

	case '\b':
		if (logcol > 0)
			logcol--;
		break;

	default:
		if (logcol < physcol) {
			lpoutput(dev, '\r');
			physcol = 0;
		}
		if (logcol < MAXCOL) {
			while (logcol > physcol) {
				lpoutput(dev, ' ');
				physcol++;
			}
			lpoutput(dev, c);
			physcol++;
		}
		logcol++;
	}
	if (logcol > 1000)	/* ignore long lines  */
		logcol = 1000;
	sc->sc_logcol = logcol;
	sc->sc_physcol = physcol;
}

lpoutput(dev, c)
	dev_t dev;
	int c;
{
	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];

	if (sc->sc_outq.c_cc >= LPHWAT) {
		(void) spl4();
		lpintr(LPUNIT(dev));				/* unchoke */
		while (sc->sc_outq.c_cc >= LPHWAT) {
			sc->sc_state |= ASLP;		/* must be ERROR */
			sleep((caddr_t)sc, LPPRI);
		}
		(void) spl0();
	}
	while (putc(c, &sc->sc_outq))
		sleep((caddr_t)&lbolt, LPPRI);
}

lpintr(lp11)
	int lp11;
{
	register int n;
	register struct lp_softc *sc = &lp_softc[lp11];
	register struct uba_device *ui = lpinfo[lp11];
	register struct lpdevice *lpaddr = (struct lpdevice *)ui->ui_addr;

	lpaddr->lpsr &= ~IENABLE;
	n = sc->sc_outq.c_cc;
	if (sc->sc_lpchar < 0)
		sc->sc_lpchar = getc(&sc->sc_outq);
	while ((lpaddr->lpsr&DONE) && sc->sc_lpchar >= 0) {
		lpaddr->lpbuf = sc->sc_lpchar;
		sc->sc_lpchar = getc(&sc->sc_outq);
	}
	sc->sc_state |= MOD;
	if (sc->sc_outq.c_cc > 0 && (lpaddr->lpsr&ERROR)==0)
		lpaddr->lpsr |= IENABLE;	/* ok and more to do later */
	if (n>LPLWAT && sc->sc_outq.c_cc<=LPLWAT && sc->sc_state&ASLP) {
		sc->sc_state &= ~ASLP;
		wakeup((caddr_t)sc);		/* top half should go on */
	}
}

lptout(dev)
	dev_t dev;
{
	register struct lp_softc *sc;
	register struct uba_device *ui;
	register struct lpdevice *lpaddr;

	sc = &lp_softc[LPUNIT(dev)];
	ui = lpinfo[LPUNIT(dev)];
	lpaddr = (struct lpdevice *) ui->ui_addr;
	if ((sc->sc_state&MOD) != 0) {
		sc->sc_state &= ~MOD;		/* something happened */
		timeout(lptout, dev, 2*hz);	/* so don't sweat */
		return;
	}
	if ((sc->sc_state&OPEN) == 0) {
		sc->sc_state &= ~TOUT;		/* no longer open */
		lpaddr->lpsr = 0;
		return;
	}
	if (sc->sc_outq.c_cc && (lpaddr->lpsr&DONE) && (lpaddr->lpsr&ERROR)==0)
		lpintr(LPUNIT(dev));			/* ready to go */
	timeout(lptout, dev, 10*hz);
}

lpreset(uban)
	int uban;
{
	register struct uba_device *ui;
	register struct lpdevice *lpaddr;
	register int unit;

	for (unit = 0; unit < NLP; unit++) {
		if ((ui = lpinfo[unit]) == 0 || ui->ui_ubanum != uban ||
		    ui->ui_alive == 0)
			continue;
		printf(" lp%d", unit);
		lpaddr = (struct lpdevice *)ui->ui_addr;
		lpaddr->lpsr |= IENABLE;
	}
}
Commit	Line	Data
fafd5979	1	/* lp.c 4.17 81/03/21 */
3f431cc4	2
66b4fb09	3	#include "lp.h"
ca063532	4	#if NLP > 0
3f431cc4 BJ	5	/*
	6	* LP-11 Line printer driver
	7	*
3f431cc4 BJ	8	* This driver has been modified to work on printers where
3f431cc4 BJ	9	* leaving IENABLE set would cause continuous interrupts.
683f0425 MT	10	*
	11	* TODO:
	12	* Test driver
	13	* Test driver on multiple printers
3f431cc4 BJ	14	*/
	15
	16	#include "../h/param.h"
	17	#include "../h/dir.h"
	18	#include "../h/user.h"
	19	#include "../h/buf.h"
	20	#include "../h/systm.h"
	21	#include "../h/map.h"
	22	#include "../h/pte.h"
ca063532	23	#include "../h/ubavar.h"
3f431cc4 BJ	24	#include "../h/ioctl.h"
3f431cc4 BJ	25	#include "../h/tty.h"
3f431cc4 BJ	26
	27	#define LPPRI (PZERO+8)
	28	#define IENABLE 0100
	29	#define DONE 0200
	30	#define ERROR 0100000
	31	#define LPLWAT 650
	32	#define LPHWAT 800
	33
ca063532 MT	34	#define MAXCOL 132
	35	#define CAP 1
	36
	37	#define LPUNIT(dev) (minor(dev) >> 3)
	38
	39	struct lpdevice {
3f431cc4 BJ	40	short lpsr;
	41	short lpbuf;
	42	};
	43
ca063532 MT	44	struct lp_softc {
	45	struct clist sc_outq;
	46	int sc_state;
	47	int sc_physcol;
	48	int sc_logcol;
	49	int sc_physline;
	50	char sc_flags;
	51	int sc_lpchar;
	52	struct buf *sc_inbuf;
	53	} lp_softc[NLP];
	54
	55	struct uba_device *lpinfo[NLP];
	56
	57	int lpprobe(), lpattach(), lptout();
	58	u_short lpstd[] = { 0177514 };
	59	struct uba_driver lpdriver =
	60	{ lpprobe, 0, lpattach, 0, lpstd, "lp", lpinfo };
3f431cc4 BJ	61
	62	/* bits for state */
	63	#define OPEN 1 /* device is open */
	64	#define TOUT 2 /* timeout is active */
	65	#define MOD 4 /* device state has been modified */
	66	#define ASLP 8 /* awaiting draining of printer */
	67
	68	extern lbolt;
	69	int lptout();
	70
5ffed226 BJ	71	lpattach(ui)
	72	struct uba_device *ui;
	73	{
	74	register struct lp_softc *sc;
	75
	76	sc = &lp_softc[ui->ui_unit];
	77	sc->sc_lpchar = -1;
	78	}
	79
	80	lpprobe(reg)
	81	caddr_t reg;
	82	{
c2213eb5	83	register int br, cvec; /* value-result */
5ffed226 BJ	84	register struct lpdevice lpaddr = (struct lpdevice )reg;
	85
	86	lpaddr->lpsr = IENABLE;
c2213eb5	87	DELAY(5);
5ffed226 BJ	88	lpaddr->lpsr = 0;
	89	}
	90
3f431cc4 BJ	91	/ARGSUSED/
3f431cc4 BJ	92	lpopen(dev, flag)
5ffed226 BJ	93	dev_t dev;
5ffed226 BJ	94	int flag;
3f431cc4	95	{
ca063532 MT	96	register int unit;
	97	register struct lpdevice *lpaddr;
	98	register struct lp_softc *sc;
	99	register struct uba_device *ui;
	100
5ffed226 BJ	101	if ((unit = LPUNIT(dev)) >= NLP \|\|
	102	(sc = &lp_softc[unit])->sc_state&OPEN \|\|
	103	(ui = lpinfo[unit]) == 0 \|\| ui->ui_alive == 0) {
ca063532 MT	104	u.u_error = ENXIO;
	105	return;
	106	}
5ffed226 BJ	107	lpaddr = (struct lpdevice *)ui->ui_addr;
5ffed226 BJ	108	if (lpaddr->lpsr&ERROR) {
3f431cc4 BJ	109	u.u_error = EIO;
	110	return;
	111	}
ca063532 MT	112	sc->sc_state \|= OPEN;
	113	sc->sc_inbuf = geteblk();
	114	sc->sc_flags = minor(dev) & 07;
a0eab615	115	(void) spl4();
ca063532 MT	116	if ((sc->sc_state&TOUT) == 0) {
	117	sc->sc_state \|= TOUT;
	118	timeout(lptout, dev, 10*hz);
3f431cc4	119	}
a0eab615	120	(void) spl0();
5ffed226	121	lpcanon(dev, '\f');
3f431cc4 BJ	122	}
	123
	124	/ARGSUSED/
	125	lpclose(dev, flag)
5ffed226 BJ	126	dev_t dev;
5ffed226 BJ	127	int flag;
3f431cc4	128	{
5ffed226	129	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];
3f431cc4	130
5ffed226	131	lpcanon(dev, '\f');
ca063532 MT	132	brelse(sc->sc_inbuf);
ca063532 MT	133	sc->sc_state &= ~OPEN;
3f431cc4 BJ	134	}
3f431cc4 BJ	135
ca063532	136	lpwrite(dev)
5ffed226	137	dev_t dev;
3f431cc4	138	{
ca063532	139	register int n;
3f431cc4	140	register char *cp;
5ffed226	141	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];
3f431cc4 BJ	142
3f431cc4 BJ	143	while (n = min(BSIZE, u.u_count)) {
ca063532	144	cp = sc->sc_inbuf->b_un.b_addr;
3f431cc4 BJ	145	iomove(cp, n, B_WRITE);
3f431cc4 BJ	146	do
5ffed226	147	lpcanon(dev, *cp++);
3f431cc4 BJ	148	while (--n);
	149	}
	150	}
	151
5ffed226 BJ	152	lpcanon(dev, c)
	153	dev_t dev;
	154	register int c;
3f431cc4 BJ	155	{
3f431cc4 BJ	156	register int logcol, physcol;
5ffed226	157	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];
3f431cc4	158
ca063532	159	if (sc->sc_flags&CAP) {
3f431cc4 BJ	160	register c2;
	161
	162	if (c>='a' && c<='z')
	163	c += 'A'-'a'; else
	164	switch (c) {
	165
	166	case '{':
	167	c2 = '(';
	168	goto esc;
	169
	170	case '}':
	171	c2 = ')';
	172	goto esc;
	173
	174	case '`':
	175	c2 = '\'';
	176	goto esc;
	177
	178	case '\|':
	179	c2 = '!';
	180	goto esc;
	181
	182	case '~':
	183	c2 = '^';
	184
	185	esc:
5ffed226	186	lpcanon(dev, c2);
ca063532	187	sc->sc_logcol--;
3f431cc4 BJ	188	c = '-';
	189	}
	190	}
ca063532 MT	191	logcol = sc->sc_logcol;
ca063532 MT	192	physcol = sc->sc_physcol;
3f431cc4 BJ	193	if (c == ' ')
	194	logcol++;
	195	else switch(c) {
	196
	197	case '\t':
36abf8b6	198	logcol = (logcol+8) & ~7;
3f431cc4 BJ	199	break;
3f431cc4 BJ	200
3f431cc4	201	case '\f':
ca063532	202	if (sc->sc_physline == 0 && physcol == 0)
ea588cf0	203	break;
fb5a911f MT	204	/* fall into ... */
	205
	206	case '\n':
5ffed226	207	lpoutput(dev, c);
ea588cf0	208	if (c == '\f')
ca063532	209	sc->sc_physline = 0;
ea588cf0	210	else
ca063532	211	sc->sc_physline++;
fb5a911f	212	physcol = 0;
3f431cc4 BJ	213	/* fall into ... */
	214
	215	case '\r':
ca063532	216	logcol = 0;
a0eab615	217	(void) spl4();
5ffed226	218	lpintr(LPUNIT(dev));
a0eab615	219	(void) spl0();
3f431cc4 BJ	220	break;
	221
	222	case '\b':
	223	if (logcol > 0)
	224	logcol--;
	225	break;
	226
	227	default:
	228	if (logcol < physcol) {
5ffed226	229	lpoutput(dev, '\r');
3f431cc4 BJ	230	physcol = 0;
3f431cc4 BJ	231	}
ca063532	232	if (logcol < MAXCOL) {
3f431cc4	233	while (logcol > physcol) {
5ffed226	234	lpoutput(dev, ' ');
3f431cc4 BJ	235	physcol++;
3f431cc4 BJ	236	}
5ffed226	237	lpoutput(dev, c);
3f431cc4 BJ	238	physcol++;
	239	}
	240	logcol++;
	241	}
	242	if (logcol > 1000) /* ignore long lines */
	243	logcol = 1000;
ca063532 MT	244	sc->sc_logcol = logcol;
ca063532 MT	245	sc->sc_physcol = physcol;
3f431cc4 BJ	246	}
3f431cc4 BJ	247
5ffed226 BJ	248	lpoutput(dev, c)
	249	dev_t dev;
	250	int c;
3f431cc4	251	{
5ffed226	252	register struct lp_softc *sc = &lp_softc[LPUNIT(dev)];
3f431cc4	253
ca063532	254	if (sc->sc_outq.c_cc >= LPHWAT) {
a0eab615	255	(void) spl4();
5ffed226	256	lpintr(LPUNIT(dev)); /* unchoke */
ca063532 MT	257	while (sc->sc_outq.c_cc >= LPHWAT) {
	258	sc->sc_state \|= ASLP; /* must be ERROR */
	259	sleep((caddr_t)sc, LPPRI);
3f431cc4	260	}
a0eab615	261	(void) spl0();
3f431cc4	262	}
ca063532	263	while (putc(c, &sc->sc_outq))
3f431cc4 BJ	264	sleep((caddr_t)&lbolt, LPPRI);
	265	}
	266
5ffed226 BJ	267	lpintr(lp11)
5ffed226 BJ	268	int lp11;
3f431cc4 BJ	269	{
3f431cc4 BJ	270	register int n;
5ffed226 BJ	271	register struct lp_softc *sc = &lp_softc[lp11];
	272	register struct uba_device *ui = lpinfo[lp11];
	273	register struct lpdevice lpaddr = (struct lpdevice )ui->ui_addr;
ca063532	274
ca063532 MT	275	lpaddr->lpsr &= ~IENABLE;
	276	n = sc->sc_outq.c_cc;
	277	if (sc->sc_lpchar < 0)
	278	sc->sc_lpchar = getc(&sc->sc_outq);
	279	while ((lpaddr->lpsr&DONE) && sc->sc_lpchar >= 0) {
	280	lpaddr->lpbuf = sc->sc_lpchar;
	281	sc->sc_lpchar = getc(&sc->sc_outq);
3f431cc4	282	}
ca063532 MT	283	sc->sc_state \|= MOD;
	284	if (sc->sc_outq.c_cc > 0 && (lpaddr->lpsr&ERROR)==0)
	285	lpaddr->lpsr \|= IENABLE; /* ok and more to do later */
	286	if (n>LPLWAT && sc->sc_outq.c_cc<=LPLWAT && sc->sc_state&ASLP) {
	287	sc->sc_state &= ~ASLP;
	288	wakeup((caddr_t)sc); /* top half should go on */
3f431cc4 BJ	289	}
	290	}
	291
ca063532	292	lptout(dev)
5ffed226	293	dev_t dev;
3f431cc4	294	{
ca063532 MT	295	register struct lp_softc *sc;
	296	register struct uba_device *ui;
	297	register struct lpdevice *lpaddr;
	298
	299	sc = &lp_softc[LPUNIT(dev)];
	300	ui = lpinfo[LPUNIT(dev)];
	301	lpaddr = (struct lpdevice *) ui->ui_addr;
	302	if ((sc->sc_state&MOD) != 0) {
	303	sc->sc_state &= ~MOD; /* something happened */
	304	timeout(lptout, dev, 2hz); / so don't sweat */
3f431cc4 BJ	305	return;
3f431cc4 BJ	306	}
ca063532 MT	307	if ((sc->sc_state&OPEN) == 0) {
	308	sc->sc_state &= ~TOUT; /* no longer open */
	309	lpaddr->lpsr = 0;
3f431cc4 BJ	310	return;
3f431cc4 BJ	311	}
ca063532	312	if (sc->sc_outq.c_cc && (lpaddr->lpsr&DONE) && (lpaddr->lpsr&ERROR)==0)
5ffed226	313	lpintr(LPUNIT(dev)); /* ready to go */
ca063532	314	timeout(lptout, dev, 10*hz);
3f431cc4 BJ	315	}
3f431cc4 BJ	316
ca063532	317	lpreset(uban)
5ffed226	318	int uban;
3f431cc4	319	{
ca063532 MT	320	register struct uba_device *ui;
	321	register struct lpdevice *lpaddr;
	322	register int unit;
	323
5ffed226 BJ	324	for (unit = 0; unit < NLP; unit++) {
	325	if ((ui = lpinfo[unit]) == 0 \|\| ui->ui_ubanum != uban \|\|
	326	ui->ui_alive == 0)
ca063532 MT	327	continue;
ca063532 MT	328	printf(" lp%d", unit);
5ffed226	329	lpaddr = (struct lpdevice *)ui->ui_addr;
ca063532	330	lpaddr->lpsr \|= IENABLE;
3f431cc4 BJ	331	}
3f431cc4 BJ	332	}