usr/src/sys/vax/uba/va.c

/*	va.c	4.18	82/11/27	*/

#include "va.h"
#if NVA > 0
/*
 * Varian printer plotter
 */
#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/vcmd.h"
#include "../h/uio.h"

#include "../vaxuba/ubareg.h"
#include "../vaxuba/ubavar.h"

int	vadebug = 0;
#define	dprintf	if(vadebug)printf

unsigned minvaph();

#define	VAPRI	(PZERO-1)

struct	vadevice {
	u_short	vaba;			/* buffer address */
	short	vawc;			/* word count (2's complement) */
	union {
		short	Vacsw;		/* control status as word */
		struct {		/* control status as bytes */
			char Vacsl;
			char Vacsh;
		} vacsr;
	} vacs;
	short	vadata;			/* programmed i/o data buffer */
};

#define	vacsw	vacs.Vacsw
#define	vacsh	vacs.vacsr.Vacsh
#define	vacsl	vacs.vacsr.Vacsl

/* vacsw bits */
#define	VA_ERROR	0100000		/* some error has occurred */
#define	VA_NPRTIMO	0001000		/* DMA timeout error */
#define	VA_NOTREADY	0000400		/* something besides NPRTIMO */
#define	VA_DONE		0000200
#define	VA_IENABLE	0000100		/* interrupt enable */
#define	VA_DMAGO	0000010		/* DMA go bit */
#define	VA_DMAGO	0000010		/* DMA go bit */
#define	VA_SUPPLIESLOW	0000004
#define	VA_BOTOFFORM	0000002
#define	VA_BYTEREVERSE	0000001		/* reverse byte order in words */

/* vacsh command bytes */
#define	VAPLOT		0000340
#define	VAPRINT		0000100
#define	VAPRINTPLOT	0000160
#define	VAAUTOSTEP	0000244
#define	VANOAUTOSTEP	0000045
#define	VAFORMFEED	0000263
#define	VASLEW		0000265
#define	VASTEP		0000064

struct va_softc {
	u_char	sc_openf;		/* exclusive open flag */
	u_char	sc_iostate;		/* kind of I/O going on */
#define	VAS_IDLE	0	/* no I/O, free */
#define	VAS_PIO		1	/* programmed I/O */
#define	VAS_DMA		2	/* DMA, block pio */
#define	VAS_WANT	4	/* wakeup when iostate changes */
	short	sc_tocnt;		/* time out counter */
	short	sc_info;		/* csw passed from vaintr */
	int	sc_state;		/* print/plot state of device */
} va_softc[NVA];

#define	VAUNIT(dev)	(minor(dev))

struct	buf rvabuf[NVA];

int	vaprobe(), vaslave(), vaattach(), vadgo();
struct	uba_device *vadinfo[NVA];
struct	uba_ctlr *vaminfo[NVA];
struct	buf vabhdr[NVA];
u_short	vastd[] = { 0764000, 0 };
struct	uba_driver vadriver =
    { vaprobe, vaslave, vaattach, vadgo, vastd, "vz", vadinfo, "va", vaminfo };

vaprobe(reg)
	caddr_t reg;
{
	register int br, cvec;		/* value-result */
	register struct vadevice *vaaddr = (struct vadevice *)reg;

#ifdef lint
	br = 0; cvec = br; br = cvec;
	vaintr(0);
#endif
#ifndef UCBVAX
	vaaddr->vacsl = VA_IENABLE;
	vaaddr->vaba = 0;
	vaaddr->vacsh = VAPLOT;
	vaaddr->vacsl = VA_IENABLE|VA_DMAGO;
	vaaddr->vawc = -1;
	DELAY(10000);
	vaaddr->vacsl = 0;
	vaaddr->vawc = 0;
#else
	br=0x14;
	cvec=0170;
#endif
	return (sizeof (struct vadevice));
}

/*ARGSUSED*/
vaslave(ui, reg)
	struct uba_device *ui;
	caddr_t reg;
{

	ui->ui_dk = 0;
	return (ui->ui_unit <= 0);
}

/*ARGSUSED*/
vaattach(ui)
	struct uba_device *ui;
{

	ui->ui_mi->um_tab.b_actf = &vabhdr[ui->ui_unit];
}

vaopen(dev)
	dev_t dev;
{
	register struct va_softc *sc;
	register struct vadevice *vaaddr;
	register struct uba_device *ui;
	int error;
	int unit = VAUNIT(dev);

	    (ui = vadinfo[VAUNIT(dev)]) == 0 || ui->ui_alive == 0)
		return (ENXIO);
	vaaddr = (struct vadevice *)ui->ui_addr;
	sc->sc_openf = 1;
	vaaddr->vawc = 0;
	sc->sc_state = 0;
	sc->sc_tocnt = 0;
	sc->sc_iostate = VAS_IDLE;
	vaaddr->vacsl = VA_IENABLE;
	vatimo(dev);
	error = vacmd(dev, VPRINT);
	if (error)
		vaclose(dev);
	return (error);
}

vastrategy(bp)
	register struct buf *bp;
{
	register struct uba_device *ui;
	register struct uba_ctlr *um;
	int s;

	dprintf("vastrategy(%x)\n", bp);
	ui = vadinfo[VAUNIT(bp->b_dev)];
	if (ui == 0 || ui->ui_alive == 0) {
		bp->b_flags |= B_ERROR;
		iodone(bp);
		return;
	}
	s = spl4();
	um = ui->ui_mi;
	bp->b_actf = NULL;
	if (um->um_tab.b_actf->b_actf == NULL)
		um->um_tab.b_actf->b_actf = bp;
	else {
		printf("bp = 0x%x, um->um_tab.b_actf->b_actf = 0x%x\n",
			bp, um->um_tab.b_actf->b_actf);
		panic("vastrategy");
		um->um_tab.b_actf->b_actl->b_forw = bp;
	}
	um->um_tab.b_actf->b_actl = bp;
	bp = um->um_tab.b_actf;
	dprintf("vastrategy: bp=%x actf=%x active=%d\n",
		bp, bp->b_actf, bp->b_active);
	if (bp->b_actf && bp->b_active == 0)
		(void) vastart(um);
	splx(s);
}

int	vablock = 16384;

unsigned
minvaph(bp)
	struct buf *bp;
{

	if (bp->b_bcount > vablock)
		bp->b_bcount = vablock;
}

/*ARGSUSED*/
vawrite(dev, uio)
	dev_t dev;
	struct uio *uio;
{

	if (VAUNIT(dev) > NVA)
		return (ENXIO);
	return (physio(vastrategy, &rvabuf[VAUNIT(dev)], dev, B_WRITE,
		    minvaph, uio));
}

vastart(um)
	register struct uba_ctlr *um;
{
	struct buf *bp;
	struct vadevice *vaaddr;
	register struct va_softc *sc;
	int unit;

	dprintf("vastart(%x), bp=%x\n", um, um->um_tab.b_actf->b_actf);
	if ((bp = um->um_tab.b_actf->b_actf) == NULL)
		return;
	unit = VAUNIT(bp->b_dev);
	sc = &va_softc[unit];
	sc->sc_tocnt = 0;
	while (sc->sc_iostate&VAS_PIO) {
		sc->sc_iostate |= VAS_WANT;
		sleep((caddr_t)&sc->sc_iostate, VAPRI);
	}
	sc->sc_iostate |= VAS_DMA;
	vaaddr = (struct vadevice *)um->um_addr;
	vaaddr->vacsl = 0;
	vaaddr->vawc = -(bp->b_bcount / 2);
	um->um_cmd = VA_DMAGO | VA_IENABLE;
	(void) ubago(vadinfo[unit]);
}

vadgo(um)
	register struct uba_ctlr *um;
{
	register struct vadevice *vaaddr = (struct vadevice *)um->um_addr;
	register struct buf *bp;

	bp = um->um_tab.b_actf;
	va_softc[VAUNIT(bp->b_actf->b_dev)].sc_tocnt = 0;
	bp->b_active++;
	vaaddr->vaba = um->um_ubinfo;
	vaaddr->vacsl = ((um->um_ubinfo >> 12) & 0x30) | um->um_cmd;
}

/*ARGSUSED*/
vaioctl(dev, cmd, data, flag)
	register caddr_t data;
{
	register int vcmd;
	register struct va_softc *sc = &va_softc[VAUNIT(dev)];

	switch (cmd) {

	case VGETSTATE:
		*(int *)data = sc->sc_state;
		break;

	case VSETSTATE:
		return (vacmd(dev, *(int *)data));
		break;

	default:
		return (ENOTTY);
	}
	return (0);
}

vacmd(dev, vcmd)
	dev_t dev;
	int vcmd;
{
	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	int s, cmd;

	s = spl4();
	while (sc->sc_iostate&VAS_DMA) {
		sc->sc_iostate |= VAS_WANT;
		sleep((caddr_t)&sc->sc_iostate, VAPRI);
	}
	sc->sc_iostate |= VAS_PIO;
	sc->sc_tocnt = 0;
	cmd = 0;
	switch (vcmd) {

	case VPLOT:
		/* Must turn on plot AND autostep modes. */
		if (vadopio(dev, VAPLOT))
			error = EIO;
		cmd = VAAUTOSTEP;
		break;

	case VPRINT:
		cmd = VAPRINT;
		break;

	case VPRINTPLOT:
		cmd = VAPRINTPLOT;
		break;
	}
	sc->sc_state = (sc->sc_state & ~(VPLOT|VPRINT|VPRINTPLOT)) | vcmd;
	if (cmd && vadopio(dev, cmd))
		error = EIO;
	sc->sc_iostate &= ~VAS_PIO;
	if (sc->sc_iostate&VAS_WANT) {
		sc->sc_iostate &= ~VAS_WANT;
		wakeup((caddr_t)&sc->sc_iostate);
	}
	splx(s);
	return (error);
}

vadopio(dev, cmd)
	dev_t dev;
	int cmd;
{
	register struct vadevice *vaaddr =
	    (struct vadevice *)vaminfo[VAUNIT(dev)]->um_addr;
	register struct va_softc *sc = &va_softc[VAUNIT(dev)];

	sc->sc_info = 0;
	vaaddr->vacsh = cmd;
	while ((sc->sc_info&(VA_DONE|VA_ERROR)) == 0)
		sleep((caddr_t)&sc->sc_info, VAPRI);
	return (sc->sc_info&VA_ERROR);
}

vatimo(dev)
	dev_t dev;
{
	register struct va_softc *sc = &va_softc[VAUNIT(dev)];

	if (sc->sc_openf)
		timeout(vatimo, (caddr_t)dev, hz/2);
	if (++sc->sc_tocnt < 2)
		return;
	sc->sc_tocnt = 0;
	dprintf("vatimo: calling vaintr\n");
	vaintr(dev);
}

/*ARGSUSED*/
vaintr(dev)
	dev_t dev;
{
	register struct uba_ctlr *um;
	struct vadevice *vaaddr;
	struct buf *bp;
	register int unit = VAUNIT(dev), e;
	register struct va_softc *sc = &va_softc[unit];

	um = vaminfo[unit];
	vaaddr = (struct vadevice *)um->um_addr;
	e = vaaddr->vacsw;
	dprintf("vaintr: um=0x%x, e=0x%x, b_active %d\n",
		um, e, um->um_tab.b_actf->b_active);
	if ((e&(VA_DONE|VA_ERROR)) == 0)
		return;
	vaaddr->vacsl = 0;
	if ((e&VA_ERROR) && (e&VA_NPRTIMO))
		printf("va%d: npr timeout\n", unit);
	if (sc->sc_iostate&VAS_PIO) {
		sc->sc_info = e;
		wakeup((caddr_t)&sc->sc_info);
		return;
	}
	if (um->um_tab.b_actf->b_active) {
		bp = um->um_tab.b_actf->b_actf;
		if (e&VA_ERROR)
			bp->b_flags |= B_ERROR;
		if (sc->sc_state&VPRINTPLOT) {
			sc->sc_state = (sc->sc_state & ~VPRINTPLOT) | VPLOT;
			vaaddr->vacsh = VAAUTOSTEP;
			return;
		}
		ubadone(um);
		um->um_tab.b_actf->b_active = 0;
		um->um_tab.b_actf->b_actf = bp->b_forw;
		bp->b_active = 0;
		bp->b_errcnt = 0;
		bp->b_resid = 0;
		iodone(bp);
	}
	if (um->um_tab.b_actf->b_actf == 0) {
		sc->sc_iostate &= ~VAS_DMA;
		if (sc->sc_iostate&VAS_WANT) {
			sc->sc_iostate &= ~VAS_WANT;
			wakeup((caddr_t)&sc->sc_iostate);
		}
		return;
	}
	if (um->um_tab.b_actf->b_active == 0)
		vastart(um);
}

vaclose(dev)
	dev_t dev;
{
	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	register struct vadevice *vaaddr =
	    (struct vadevice *)vadinfo[VAUNIT(dev)]->ui_addr;

	sc->sc_openf = 0;
	sc->sc_state = 0;
	if (sc->sc_iostate != VAS_IDLE)
		wakeup((caddr_t)&sc->sc_iostate);
	sc->sc_iostate = VAS_IDLE;
	vaaddr->vacsl = 0;
	vaaddr->vawc = 0;
}

vareset(uban)
	int uban;
{
	register int va11;
	register struct uba_ctlr *um;
	register struct vadevice *vaaddr;
	register struct va_softc *sc;

	for (va11 = 0; va11 < NVA; va11++, sc++) {
		if ((um = vaminfo[va11]) == 0 || um->um_ubanum != uban ||
		    um->um_alive == 0)
			continue;
		sc = &va_softc[um->um_ctlr];
		if (sc->sc_openf == 0)
			continue;
		printf(" va%d", va11);
		vaaddr = (struct vadevice *)um->um_addr;
		vaaddr->vacsl = VA_IENABLE;
		if (sc->sc_state & VPLOT) {
			vaaddr->vacsh = VAPLOT;
			DELAY(10000);
			vaaddr->vacsh = VAAUTOSTEP;
		} else if (sc->sc_state & VPRINTPLOT)
			vaaddr->vacsh = VPRINTPLOT;
		else
			vaaddr->vacsh = VAPRINTPLOT;
		DELAY(10000);
		(void) vastart(um);
	}
}

vaselect()
{

	return (1);
}
#endif
Commit	Line	Data
	1	/* va.c 4.18 82/11/27 */
	2
	3	#include "va.h"
	4	#if NVA > 0
	5	/*
	6	* Varian printer plotter
	7	*/
	8	#include "../h/param.h"
	9	#include "../h/dir.h"
	10	#include "../h/user.h"
	11	#include "../h/buf.h"
	12	#include "../h/systm.h"
	13	#include "../h/map.h"
	14	#include "../h/pte.h"
	15	#include "../h/vcmd.h"
	16	#include "../h/uio.h"
	17
	18	#include "../vaxuba/ubareg.h"
	19	#include "../vaxuba/ubavar.h"
	20
	21	int vadebug = 0;
	22	#define dprintf if(vadebug)printf
	23
	24	unsigned minvaph();
	25
	26	#define VAPRI (PZERO-1)
	27
	28	struct vadevice {
	29	u_short vaba; /* buffer address */
	30	short vawc; /* word count (2's complement) */
	31	union {
	32	short Vacsw; /* control status as word */
	33	struct { /* control status as bytes */
	34	char Vacsl;
	35	char Vacsh;
	36	} vacsr;
	37	} vacs;
	38	short vadata; /* programmed i/o data buffer */
	39	};
	40
	41	#define vacsw vacs.Vacsw
	42	#define vacsh vacs.vacsr.Vacsh
	43	#define vacsl vacs.vacsr.Vacsl
	44
	45	/* vacsw bits */
	46	#define VA_ERROR 0100000 /* some error has occurred */
	47	#define VA_NPRTIMO 0001000 /* DMA timeout error */
	48	#define VA_NOTREADY 0000400 /* something besides NPRTIMO */
	49	#define VA_DONE 0000200
	50	#define VA_IENABLE 0000100 /* interrupt enable */
	51	#define VA_DMAGO 0000010 /* DMA go bit */
	52	#define VA_DMAGO 0000010 /* DMA go bit */
	53	#define VA_SUPPLIESLOW 0000004
	54	#define VA_BOTOFFORM 0000002
	55	#define VA_BYTEREVERSE 0000001 /* reverse byte order in words */
	56
	57	/* vacsh command bytes */
	58	#define VAPLOT 0000340
	59	#define VAPRINT 0000100
	60	#define VAPRINTPLOT 0000160
	61	#define VAAUTOSTEP 0000244
	62	#define VANOAUTOSTEP 0000045
	63	#define VAFORMFEED 0000263
	64	#define VASLEW 0000265
	65	#define VASTEP 0000064
	66
	67	struct va_softc {
	68	u_char sc_openf; /* exclusive open flag */
	69	u_char sc_iostate; /* kind of I/O going on */
	70	#define VAS_IDLE 0 /* no I/O, free */
	71	#define VAS_PIO 1 /* programmed I/O */
	72	#define VAS_DMA 2 /* DMA, block pio */
	73	#define VAS_WANT 4 /* wakeup when iostate changes */
	74	short sc_tocnt; /* time out counter */
	75	short sc_info; /* csw passed from vaintr */
	76	int sc_state; /* print/plot state of device */
	77	} va_softc[NVA];
	78
	79	#define VAUNIT(dev) (minor(dev))
	80
	81	struct buf rvabuf[NVA];
	82
	83	int vaprobe(), vaslave(), vaattach(), vadgo();
	84	struct uba_device *vadinfo[NVA];
	85	struct uba_ctlr *vaminfo[NVA];
	86	struct buf vabhdr[NVA];
	87	u_short vastd[] = { 0764000, 0 };
	88	struct uba_driver vadriver =
	89	{ vaprobe, vaslave, vaattach, vadgo, vastd, "vz", vadinfo, "va", vaminfo };
	90
	91	vaprobe(reg)
	92	caddr_t reg;
	93	{
	94	register int br, cvec; /* value-result */
	95	register struct vadevice vaaddr = (struct vadevice )reg;
	96
	97	#ifdef lint
	98	br = 0; cvec = br; br = cvec;
	99	vaintr(0);
	100	#endif
	101	#ifndef UCBVAX
	102	vaaddr->vacsl = VA_IENABLE;
	103	vaaddr->vaba = 0;
	104	vaaddr->vacsh = VAPLOT;
	105	vaaddr->vacsl = VA_IENABLE\|VA_DMAGO;
	106	vaaddr->vawc = -1;
	107	DELAY(10000);
	108	vaaddr->vacsl = 0;
	109	vaaddr->vawc = 0;
	110	#else
	111	br=0x14;
	112	cvec=0170;
	113	#endif
	114	return (sizeof (struct vadevice));
	115	}
	116
	117	/ARGSUSED/
	118	vaslave(ui, reg)
	119	struct uba_device *ui;
	120	caddr_t reg;
	121	{
	122
	123	ui->ui_dk = 0;
	124	return (ui->ui_unit <= 0);
	125	}
	126
	127	/ARGSUSED/
	128	vaattach(ui)
	129	struct uba_device *ui;
	130	{
	131
	132	ui->ui_mi->um_tab.b_actf = &vabhdr[ui->ui_unit];
	133	}
	134
	135	vaopen(dev)
	136	dev_t dev;
	137	{
	138	register struct va_softc *sc;
	139	register struct vadevice *vaaddr;
	140	register struct uba_device *ui;
	141	int error;
	142	int unit = VAUNIT(dev);
	143
	144	(ui = vadinfo[VAUNIT(dev)]) == 0 \|\| ui->ui_alive == 0)
	145	return (ENXIO);
	146	vaaddr = (struct vadevice *)ui->ui_addr;
	147	sc->sc_openf = 1;
	148	vaaddr->vawc = 0;
	149	sc->sc_state = 0;
	150	sc->sc_tocnt = 0;
	151	sc->sc_iostate = VAS_IDLE;
	152	vaaddr->vacsl = VA_IENABLE;
	153	vatimo(dev);
	154	error = vacmd(dev, VPRINT);
	155	if (error)
	156	vaclose(dev);
	157	return (error);
	158	}
	159
	160	vastrategy(bp)
	161	register struct buf *bp;
	162	{
	163	register struct uba_device *ui;
	164	register struct uba_ctlr *um;
	165	int s;
	166
	167	dprintf("vastrategy(%x)\n", bp);
	168	ui = vadinfo[VAUNIT(bp->b_dev)];
	169	if (ui == 0 \|\| ui->ui_alive == 0) {
	170	bp->b_flags \|= B_ERROR;
	171	iodone(bp);
	172	return;
	173	}
	174	s = spl4();
	175	um = ui->ui_mi;
	176	bp->b_actf = NULL;
	177	if (um->um_tab.b_actf->b_actf == NULL)
	178	um->um_tab.b_actf->b_actf = bp;
	179	else {
	180	printf("bp = 0x%x, um->um_tab.b_actf->b_actf = 0x%x\n",
	181	bp, um->um_tab.b_actf->b_actf);
	182	panic("vastrategy");
	183	um->um_tab.b_actf->b_actl->b_forw = bp;
	184	}
	185	um->um_tab.b_actf->b_actl = bp;
	186	bp = um->um_tab.b_actf;
	187	dprintf("vastrategy: bp=%x actf=%x active=%d\n",
	188	bp, bp->b_actf, bp->b_active);
	189	if (bp->b_actf && bp->b_active == 0)
	190	(void) vastart(um);
	191	splx(s);
	192	}
	193
	194	int vablock = 16384;
	195
	196	unsigned
	197	minvaph(bp)
	198	struct buf *bp;
	199	{
	200
	201	if (bp->b_bcount > vablock)
	202	bp->b_bcount = vablock;
	203	}
	204
	205	/ARGSUSED/
	206	vawrite(dev, uio)
	207	dev_t dev;
	208	struct uio *uio;
	209	{
	210
	211	if (VAUNIT(dev) > NVA)
	212	return (ENXIO);
	213	return (physio(vastrategy, &rvabuf[VAUNIT(dev)], dev, B_WRITE,
	214	minvaph, uio));
	215	}
	216
	217	vastart(um)
	218	register struct uba_ctlr *um;
	219	{
	220	struct buf *bp;
	221	struct vadevice *vaaddr;
	222	register struct va_softc *sc;
	223	int unit;
	224
	225	dprintf("vastart(%x), bp=%x\n", um, um->um_tab.b_actf->b_actf);
	226	if ((bp = um->um_tab.b_actf->b_actf) == NULL)
	227	return;
	228	unit = VAUNIT(bp->b_dev);
	229	sc = &va_softc[unit];
	230	sc->sc_tocnt = 0;
	231	while (sc->sc_iostate&VAS_PIO) {
	232	sc->sc_iostate \|= VAS_WANT;
	233	sleep((caddr_t)&sc->sc_iostate, VAPRI);
	234	}
	235	sc->sc_iostate \|= VAS_DMA;
	236	vaaddr = (struct vadevice *)um->um_addr;
	237	vaaddr->vacsl = 0;
	238	vaaddr->vawc = -(bp->b_bcount / 2);
	239	um->um_cmd = VA_DMAGO \| VA_IENABLE;
	240	(void) ubago(vadinfo[unit]);
	241	}
	242
	243	vadgo(um)
	244	register struct uba_ctlr *um;
	245	{
	246	register struct vadevice vaaddr = (struct vadevice )um->um_addr;
	247	register struct buf *bp;
	248
	249	bp = um->um_tab.b_actf;
	250	va_softc[VAUNIT(bp->b_actf->b_dev)].sc_tocnt = 0;
	251	bp->b_active++;
	252	vaaddr->vaba = um->um_ubinfo;
	253	vaaddr->vacsl = ((um->um_ubinfo >> 12) & 0x30) \| um->um_cmd;
	254	}
	255
	256	/ARGSUSED/
	257	vaioctl(dev, cmd, data, flag)
	258	register caddr_t data;
	259	{
	260	register int vcmd;
	261	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	262
	263	switch (cmd) {
	264
	265	case VGETSTATE:
	266	(int )data = sc->sc_state;
	267	break;
	268
	269	case VSETSTATE:
	270	return (vacmd(dev, (int )data));
	271	break;
	272
	273	default:
	274	return (ENOTTY);
	275	}
	276	return (0);
	277	}
	278
	279	vacmd(dev, vcmd)
	280	dev_t dev;
	281	int vcmd;
	282	{
	283	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	284	int s, cmd;
	285
	286	s = spl4();
	287	while (sc->sc_iostate&VAS_DMA) {
	288	sc->sc_iostate \|= VAS_WANT;
	289	sleep((caddr_t)&sc->sc_iostate, VAPRI);
	290	}
	291	sc->sc_iostate \|= VAS_PIO;
	292	sc->sc_tocnt = 0;
	293	cmd = 0;
	294	switch (vcmd) {
	295
	296	case VPLOT:
	297	/* Must turn on plot AND autostep modes. */
	298	if (vadopio(dev, VAPLOT))
	299	error = EIO;
	300	cmd = VAAUTOSTEP;
	301	break;
	302
	303	case VPRINT:
	304	cmd = VAPRINT;
	305	break;
	306
	307	case VPRINTPLOT:
	308	cmd = VAPRINTPLOT;
	309	break;
	310	}
	311	sc->sc_state = (sc->sc_state & ~(VPLOT\|VPRINT\|VPRINTPLOT)) \| vcmd;
	312	if (cmd && vadopio(dev, cmd))
	313	error = EIO;
	314	sc->sc_iostate &= ~VAS_PIO;
	315	if (sc->sc_iostate&VAS_WANT) {
	316	sc->sc_iostate &= ~VAS_WANT;
	317	wakeup((caddr_t)&sc->sc_iostate);
	318	}
	319	splx(s);
	320	return (error);
	321	}
	322
	323	vadopio(dev, cmd)
	324	dev_t dev;
	325	int cmd;
	326	{
	327	register struct vadevice *vaaddr =
	328	(struct vadevice *)vaminfo[VAUNIT(dev)]->um_addr;
	329	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	330
	331	sc->sc_info = 0;
	332	vaaddr->vacsh = cmd;
	333	while ((sc->sc_info&(VA_DONE\|VA_ERROR)) == 0)
	334	sleep((caddr_t)&sc->sc_info, VAPRI);
	335	return (sc->sc_info&VA_ERROR);
	336	}
	337
	338	vatimo(dev)
	339	dev_t dev;
	340	{
	341	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	342
	343	if (sc->sc_openf)
	344	timeout(vatimo, (caddr_t)dev, hz/2);
	345	if (++sc->sc_tocnt < 2)
	346	return;
	347	sc->sc_tocnt = 0;
	348	dprintf("vatimo: calling vaintr\n");
	349	vaintr(dev);
	350	}
	351
	352	/ARGSUSED/
	353	vaintr(dev)
	354	dev_t dev;
	355	{
	356	register struct uba_ctlr *um;
	357	struct vadevice *vaaddr;
	358	struct buf *bp;
	359	register int unit = VAUNIT(dev), e;
	360	register struct va_softc *sc = &va_softc[unit];
	361
	362	um = vaminfo[unit];
	363	vaaddr = (struct vadevice *)um->um_addr;
	364	e = vaaddr->vacsw;
	365	dprintf("vaintr: um=0x%x, e=0x%x, b_active %d\n",
	366	um, e, um->um_tab.b_actf->b_active);
	367	if ((e&(VA_DONE\|VA_ERROR)) == 0)
	368	return;
	369	vaaddr->vacsl = 0;
	370	if ((e&VA_ERROR) && (e&VA_NPRTIMO))
	371	printf("va%d: npr timeout\n", unit);
	372	if (sc->sc_iostate&VAS_PIO) {
	373	sc->sc_info = e;
	374	wakeup((caddr_t)&sc->sc_info);
	375	return;
	376	}
	377	if (um->um_tab.b_actf->b_active) {
	378	bp = um->um_tab.b_actf->b_actf;
	379	if (e&VA_ERROR)
	380	bp->b_flags \|= B_ERROR;
	381	if (sc->sc_state&VPRINTPLOT) {
	382	sc->sc_state = (sc->sc_state & ~VPRINTPLOT) \| VPLOT;
	383	vaaddr->vacsh = VAAUTOSTEP;
	384	return;
	385	}
	386	ubadone(um);
	387	um->um_tab.b_actf->b_active = 0;
	388	um->um_tab.b_actf->b_actf = bp->b_forw;
	389	bp->b_active = 0;
	390	bp->b_errcnt = 0;
	391	bp->b_resid = 0;
	392	iodone(bp);
	393	}
	394	if (um->um_tab.b_actf->b_actf == 0) {
	395	sc->sc_iostate &= ~VAS_DMA;
	396	if (sc->sc_iostate&VAS_WANT) {
	397	sc->sc_iostate &= ~VAS_WANT;
	398	wakeup((caddr_t)&sc->sc_iostate);
	399	}
	400	return;
	401	}
	402	if (um->um_tab.b_actf->b_active == 0)
	403	vastart(um);
	404	}
	405
	406	vaclose(dev)
	407	dev_t dev;
	408	{
	409	register struct va_softc *sc = &va_softc[VAUNIT(dev)];
	410	register struct vadevice *vaaddr =
	411	(struct vadevice *)vadinfo[VAUNIT(dev)]->ui_addr;
	412
	413	sc->sc_openf = 0;
	414	sc->sc_state = 0;
	415	if (sc->sc_iostate != VAS_IDLE)
	416	wakeup((caddr_t)&sc->sc_iostate);
	417	sc->sc_iostate = VAS_IDLE;
	418	vaaddr->vacsl = 0;
	419	vaaddr->vawc = 0;
	420	}
	421
	422	vareset(uban)
	423	int uban;
	424	{
	425	register int va11;
	426	register struct uba_ctlr *um;
	427	register struct vadevice *vaaddr;
	428	register struct va_softc *sc;
	429
	430	for (va11 = 0; va11 < NVA; va11++, sc++) {
	431	if ((um = vaminfo[va11]) == 0 \|\| um->um_ubanum != uban \|\|
	432	um->um_alive == 0)
	433	continue;
	434	sc = &va_softc[um->um_ctlr];
	435	if (sc->sc_openf == 0)
	436	continue;
	437	printf(" va%d", va11);
	438	vaaddr = (struct vadevice *)um->um_addr;
	439	vaaddr->vacsl = VA_IENABLE;
	440	if (sc->sc_state & VPLOT) {
	441	vaaddr->vacsh = VAPLOT;
	442	DELAY(10000);
	443	vaaddr->vacsh = VAAUTOSTEP;
	444	} else if (sc->sc_state & VPRINTPLOT)
	445	vaaddr->vacsh = VPRINTPLOT;
	446	else
	447	vaaddr->vacsh = VAPRINTPLOT;
	448	DELAY(10000);
	449	(void) vastart(um);
	450	}
	451	}
	452
	453	vaselect()
	454	{
	455
	456	return (1);
	457	}
	458	#endif