[unix-history] / usr / src / sys / hp300 / dev / ac.c

/*
 * Copyright (c) 1991 University of Utah.
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * %sccs.include.redist.c%
 *
 * from: Utah $Hdr: ac.c 1.5 92/01/21$
 *
 *	@(#)ac.c	8.2 (Berkeley) %G%
 */

/*
 * SCSI driver for MO autochanger.
 *
 * Very crude.  Because of the lack of connect/disconnect support in the
 * scsi driver, this driver can tie up the SCSI bus for a long time.  It
 * also grabs a DMA channel and holds it for the duration even though it
 * never uses it.
 */

#include "ac.h"
#if NAC > 0

#include <sys/param.h>
#include <sys/buf.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/malloc.h>

#include <hp/dev/device.h>
#include <hp300/dev/scsireg.h>
#include <hp300/dev/acioctl.h>
#include <hp300/dev/acvar.h>

extern int scsi_test_unit_rdy();
extern int scsi_request_sense();
extern int scsiustart();
extern int scsigo();
extern void scsifree();
extern void scsireset();
extern void scsi_delay();

extern int scsi_immed_command();

int	acinit(), acstart(), acgo(), acintr();

struct	driver acdriver = {
	acinit, "ac", acstart, acgo, acintr,
};

struct	ac_softc ac_softc[NAC];
static	struct buf acbuf[NAC];
static	struct scsi_fmt_cdb accmd[NAC];

#ifdef DEBUG
int ac_debug = 0x0000;
#define ACD_FOLLOW	0x0001
#define ACD_OPEN	0x0002
#endif

acinit(hd)
	register struct hp_device *hd;
{
	int unit = hd->hp_unit;
	register struct ac_softc *sc = &ac_softc[unit];

	sc->sc_hd = hd;
	sc->sc_punit = hd->hp_flags & 7;
	if (acident(sc, hd) < 0)
		return(0);
	sc->sc_dq.dq_unit = unit;
	sc->sc_dq.dq_ctlr = hd->hp_ctlr;
	sc->sc_dq.dq_slave = hd->hp_slave;
	sc->sc_dq.dq_driver = &acdriver;
	sc->sc_bp = &acbuf[unit];
	sc->sc_cmd = &accmd[unit];
	sc->sc_flags = ACF_ALIVE;
	return(1);
}

acident(sc, hd)
	register struct ac_softc *sc;
	register struct hp_device *hd;
{
	int unit;
	register int ctlr, slave;
	int i, stat;
	int tries = 5;
	char idstr[32];
	struct scsi_inquiry inqbuf;
	static struct scsi_fmt_cdb inq = {
		6,
		CMD_INQUIRY, 0, 0, 0, sizeof(inqbuf), 0
	};

	ctlr = hd->hp_ctlr;
	slave = hd->hp_slave;
	unit = sc->sc_punit;
	scsi_delay(-1);

	/*
	 * See if device is ready
	 */
	while ((i = scsi_test_unit_rdy(ctlr, slave, unit)) != 0) {
		if (i == -1 || --tries < 0)
			/* doesn't exist or not a CCS device */
			goto failed;
		if (i == STS_CHECKCOND) {
			u_char sensebuf[128];
			struct scsi_xsense *sp;

			scsi_request_sense(ctlr, slave, unit,
					   sensebuf, sizeof(sensebuf));
			sp = (struct scsi_xsense *) sensebuf;
			if (sp->class == 7 && sp->key == 6)
				/* drive doing an RTZ -- give it a while */
				DELAY(1000000);
		}
		DELAY(1000);
	}
	/*
	 * Find out if it is an autochanger
	 */
	if (scsi_immed_command(ctlr, slave, unit, &inq,
			       (u_char *)&inqbuf, sizeof(inqbuf), B_READ))
		goto failed;

	if (inqbuf.type != 8 || inqbuf.qual != 0x80 || inqbuf.version != 2)
		goto failed;

	bcopy((caddr_t)&inqbuf.vendor_id, (caddr_t)idstr, 28);
	for (i = 27; i > 23; --i)
		if (idstr[i] != ' ')
			break;
	idstr[i+1] = 0;
	for (i = 23; i > 7; --i)
		if (idstr[i] != ' ')
			break;
	idstr[i+1] = 0;
	for (i = 7; i >= 0; --i)
		if (idstr[i] != ' ')
			break;
	idstr[i+1] = 0;
	printf("ac%d: %s %s rev %s\n", hd->hp_unit,
	       &idstr[0], &idstr[8], &idstr[24]);

	scsi_delay(0);
	return(inqbuf.type);
failed:
	scsi_delay(0);
	return(-1);
}

/*ARGSUSED*/
acopen(dev, flag, mode, p)
	dev_t dev;
	int flag, mode;
	struct proc *p;
{
	register int unit = minor(dev);
	register struct ac_softc *sc = &ac_softc[unit];
	int error = 0;

	if (unit >= NAC || (sc->sc_flags & ACF_ALIVE) == 0)
		return(ENXIO);
	if (sc->sc_flags & ACF_OPEN)
		return(EBUSY);
	/*
	 * Since acgeteinfo can block we mark the changer open now.
	 */
	sc->sc_flags |= ACF_OPEN;
	if (acgeteinfo(dev)) {
		sc->sc_flags &= ~ACF_OPEN;
		return(EIO);
	}
	return(0);
}

/*ARGSUSED*/
acclose(dev, flag, mode, p)
	dev_t dev;
	int flag, mode;
	struct proc *p;
{
	struct ac_softc *sc = &ac_softc[minor(dev)];

	sc->sc_flags &= ~ACF_OPEN;
}

#define ACRESLEN(ep)	\
	(8 + (ep)->nmte*12 + (ep)->nse*12 + (ep)->niee*12 + (ep)->ndte*20)

/*ARGSUSED*/
acioctl(dev, cmd, data, flag, p)
	dev_t dev;
	int cmd;
	caddr_t data; 
	int flag;
	struct proc *p;
{
	register struct ac_softc *sc = &ac_softc[minor(dev)];
	char *dp;
	int dlen, error = 0;

	switch (cmd) {

	default:
		return (EINVAL);

	/* perform an init element status and mode sense to reset state */
	case ACIOCINIT:
		error = accommand(dev, ACCMD_INITES, (caddr_t)0, 0);
		if (!error)
			error = acgeteinfo(dev);
		break;

	/* copy internal element information */
	case ACIOCGINFO:
		*(struct acinfo *)data = sc->sc_einfo;
		break;

	case ACIOCRAWES:
	{
		struct acbuffer *acbp = (struct acbuffer *)data;

		dlen = ACRESLEN(&sc->sc_einfo);
		dp = (char *) malloc(dlen, M_DEVBUF, M_WAITOK);
		error = accommand(dev, ACCMD_READES, dp, dlen);
		if (!error) {
			dlen = *(int *)&dp[4] + 8;
			if (dlen > acbp->buflen)
				dlen = acbp->buflen;
			error = copyout(dp, acbp->bufptr, dlen);
		}
		break;
	}

	case ACIOCGSTAT:
	{
		struct acbuffer *acbp = (struct acbuffer *)data;

		dlen = ACRESLEN(&sc->sc_einfo);
		dp = (char *) malloc(dlen, M_DEVBUF, M_WAITOK);
		error = accommand(dev, ACCMD_READES, dp, dlen);
		if (!error) {
			int ne;
			char *tbuf;

			ne = sc->sc_einfo.nmte + sc->sc_einfo.nse +
				sc->sc_einfo.niee + sc->sc_einfo.ndte;
			dlen = ne * sizeof(struct aceltstat);
			tbuf = (char *) malloc(dlen, M_DEVBUF, M_WAITOK);
			acconvert(dp, tbuf, ne);
			if (dlen > acbp->buflen)
				dlen = acbp->buflen;
			error = copyout(tbuf, acbp->bufptr, dlen);
			free(tbuf, M_DEVBUF);
		}
		free(dp, M_DEVBUF);
		break;
	}

	case ACIOCMOVE:
		error = accommand(dev, ACCMD_MOVEM, data,
				  sizeof(struct acmove));
		break;
	}
	return(error);
}

accommand(dev, command, bufp, buflen)
	dev_t dev;
	int command;
	char *bufp;
	int buflen;
{
	int unit = minor(dev);
	register struct ac_softc *sc = &ac_softc[unit];
	register struct buf *bp = sc->sc_bp;
	register struct scsi_fmt_cdb *cmd = sc->sc_cmd;
	int error;

#ifdef DEBUG
	if (ac_debug & ACD_FOLLOW)
		printf("accommand(dev=%x, cmd=%x, buf=%x, buflen=%x)\n",
		       dev, command, bufp, buflen);
#endif
	if (sc->sc_flags & ACF_ACTIVE)
		panic("accommand: active!");

	sc->sc_flags |= ACF_ACTIVE;
	bzero((caddr_t)cmd->cdb, sizeof(cmd->cdb));
	cmd->cdb[0] = command;

	switch (command) {
	case ACCMD_INITES:
		cmd->len = 6;
		break;
	case ACCMD_READES:
		cmd->len = 12;
		*(short *)&cmd->cdb[2] = 0;
		*(short *)&cmd->cdb[4] =
			sc->sc_einfo.nmte + sc->sc_einfo.nse +
			sc->sc_einfo.niee + sc->sc_einfo.ndte;
		cmd->cdb[7] = buflen >> 16;
		cmd->cdb[8] = buflen >> 8;
		cmd->cdb[9] = buflen;
		break;
	case ACCMD_MODESENSE:
		cmd->len = 6;
		cmd->cdb[2] = 0x3F;	/* all pages */
		cmd->cdb[4] = buflen;
		break;
	case ACCMD_MOVEM:
		cmd->len = 12;
		*(short *)&cmd->cdb[2] = sc->sc_picker;
		*(short *)&cmd->cdb[4] = *(short *)&bufp[0];
		*(short *)&cmd->cdb[6] = *(short *)&bufp[2];
		if (*(short *)&bufp[4] & AC_INVERT)
			cmd->cdb[10] = 1;
		bufp = 0;
		buflen = 0;
		break;
	default:
		panic("accommand: bad command");
	}
	bp->b_flags = B_BUSY|B_READ;
	bp->b_dev = dev;
	bp->b_un.b_addr = bufp;
	bp->b_bcount = buflen;
	bp->b_resid = 0;
	bp->b_blkno = 0;
	bp->b_error = 0;
	if (scsireq(&sc->sc_dq))
		acstart(unit);
	error = biowait(bp);
	sc->sc_flags &= ~ACF_ACTIVE;
	return (error);
}

acstart(unit)
	int unit;
{
#ifdef DEBUG
	if (ac_debug & ACD_FOLLOW)
		printf("acstart(unit=%x)\n", unit);
#endif
	if (scsiustart(ac_softc[unit].sc_hd->hp_ctlr))
		acgo(unit);
}

acgo(unit)
	int unit;
{
	register struct ac_softc *sc = &ac_softc[unit];
	register struct buf *bp = sc->sc_bp;
	struct hp_device *hp = sc->sc_hd;
	int stat;

#ifdef DEBUG
	if (ac_debug & ACD_FOLLOW)
		printf("acgo(unit=%x): ", unit);
#endif
	stat = scsigo(hp->hp_ctlr, hp->hp_slave, sc->sc_punit,
		      bp, sc->sc_cmd, 0);
#ifdef DEBUG
	if (ac_debug & ACD_FOLLOW)
		printf("scsigo returns %x\n", stat);
#endif
	if (stat) {
		bp->b_error = EIO;
		bp->b_flags |= B_ERROR;
		(void) biodone(bp);
		scsifree(&sc->sc_dq);
	}
}

acintr(unit, stat)
	int unit, stat;
{
	register struct ac_softc *sc = &ac_softc[unit];
	register struct buf *bp = sc->sc_bp;
	u_char sensebuf[78];
	struct scsi_xsense *sp;

#ifdef DEBUG
	if (ac_debug & ACD_FOLLOW)
		printf("acintr(unit=%x, stat=%x)\n", unit, stat);
#endif
	switch (stat) {
	case 0:
		bp->b_resid = 0;
		break;
	case STS_CHECKCOND:
		scsi_request_sense(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave,
				   sc->sc_punit, sensebuf, sizeof sensebuf);
		sp = (struct scsi_xsense *)sensebuf;
		printf("ac%d: acintr sense key=%x, ac=%x, acq=%x\n",
		       unit, sp->key, sp->info4, sp->len);
		bp->b_flags |= B_ERROR;
		bp->b_error = EIO;
		break;
	default:
		printf("ac%d: acintr unknown status 0x%x\n", unit, stat);
		break;
	}
	(void) biodone(sc->sc_bp);
	scsifree(&sc->sc_dq);
}

acgeteinfo(dev)
	dev_t dev;
{
	register struct ac_softc *sc = &ac_softc[minor(dev)];
	register char *bp;
	char msbuf[48];
	int error;

	bzero(msbuf, sizeof msbuf);
	error = accommand(dev, ACCMD_MODESENSE, msbuf, sizeof msbuf);
	if (error)
		return(error);
	bp = &msbuf[4];
	while (bp < &msbuf[48]) {
		switch (bp[0] & 0x3F) {
		case 0x1D:
			sc->sc_einfo = *(struct acinfo *)&bp[2];
			sc->sc_picker = sc->sc_einfo.fmte;	/* XXX */
			return(0);
		case 0x1E:
			bp += 4;
			break;
		case 0x1F:
			bp += 20;
			break;
		default:
			printf("acgeteinfo: bad page type %x\n", bp[0]);
			return(EIO);
		}
	}
	return(EIO);
}

acconvert(sbuf, dbuf, ne)
	char *sbuf, *dbuf;
	int ne;
{
	register struct aceltstat *ep = (struct aceltstat *)dbuf;
	register struct ac_restatphdr *phdr;
	register struct ac_restatdb *dbp;
	struct ac_restathdr *hdr;
#ifdef DEBUG
	register int bcount;
#endif

	hdr = (struct ac_restathdr *)&sbuf[0];
	sbuf += sizeof *hdr;
#ifdef DEBUG
	if (ac_debug & ACD_FOLLOW)
		printf("element status: first=%d, num=%d, len=%d\n",
		       hdr->ac_felt, hdr->ac_nelt, hdr->ac_bcount);
	if (hdr->ac_nelt != ne) {
		printf("acconvert: # of elements, %d != %d\n",
		       hdr->ac_nelt, ne);
		if (hdr->ac_nelt < ne)
			ne = hdr->ac_nelt;
	}
	bcount = hdr->ac_bcount;
#endif
	while (ne) {
		phdr = (struct ac_restatphdr *)sbuf;
		sbuf += sizeof *phdr;
#ifdef DEBUG
		bcount -= sizeof *phdr;
#endif
		dbp = (struct ac_restatdb *)sbuf;
		sbuf += phdr->ac_bcount;
#ifdef DEBUG
		bcount -= phdr->ac_bcount;
#endif
		while (dbp < (struct ac_restatdb *)sbuf) {
			ep->type = phdr->ac_type;
			ep->eaddr = dbp->ac_eaddr;
			ep->flags = 0;
			if (dbp->ac_full)
				ep->flags |= AC_FULL;
			if (dbp->ac_exc)
				ep->flags |= AC_ERROR;
			if (dbp->ac_acc)
				ep->flags |= AC_ACCESS;
			dbp = (struct ac_restatdb *)
				((char *)dbp + phdr->ac_dlen);
			ep++;
			ne--;
		}
#ifdef DEBUG
		if (ne < 0 || bcount < 0)
			panic("acconvert: inconsistant");
#endif
	}
}
#endif
Commit	Line	Data
9acfa6cd MH	1	/*
9acfa6cd MH	2	* Copyright (c) 1991 University of Utah.
030a8056 KB	3	* Copyright (c) 1990, 1993
030a8056 KB	4	* The Regents of the University of California. All rights reserved.
9acfa6cd MH	5	*
	6	* This code is derived from software contributed to Berkeley by
	7	* the Systems Programming Group of the University of Utah Computer
	8	* Science Department.
	9	*
	10	* %sccs.include.redist.c%
	11	*
	12	* from: Utah $Hdr: ac.c 1.5 92/01/21$
	13	*
f1a9d6c6	14	* @(#)ac.c 8.2 (Berkeley) %G%
9acfa6cd MH	15	*/
	16
	17	/*
	18	* SCSI driver for MO autochanger.
	19	*
	20	* Very crude. Because of the lack of connect/disconnect support in the
	21	* scsi driver, this driver can tie up the SCSI bus for a long time. It
	22	* also grabs a DMA channel and holds it for the duration even though it
	23	* never uses it.
	24	*/
	25
	26	#include "ac.h"
	27	#if NAC > 0
	28
38a01dbe KB	29	#include <sys/param.h>
	30	#include <sys/buf.h>
	31	#include <sys/errno.h>
867cde0a KB	32	#include <sys/ioctl.h>
	33	#include <sys/kernel.h>
	34	#include <sys/malloc.h>
9acfa6cd	35
38a01dbe	36	#include <hp/dev/device.h>
38a01dbe KB	37	#include <hp300/dev/scsireg.h>
	38	#include <hp300/dev/acioctl.h>
	39	#include <hp300/dev/acvar.h>
9acfa6cd MH	40
	41	extern int scsi_test_unit_rdy();
	42	extern int scsi_request_sense();
	43	extern int scsiustart();
	44	extern int scsigo();
	45	extern void scsifree();
	46	extern void scsireset();
	47	extern void scsi_delay();
	48
	49	extern int scsi_immed_command();
	50
	51	int acinit(), acstart(), acgo(), acintr();
	52
	53	struct driver acdriver = {
	54	acinit, "ac", acstart, acgo, acintr,
	55	};
	56
	57	struct ac_softc ac_softc[NAC];
	58	static struct buf acbuf[NAC];
	59	static struct scsi_fmt_cdb accmd[NAC];
	60
	61	#ifdef DEBUG
	62	int ac_debug = 0x0000;
	63	#define ACD_FOLLOW 0x0001
	64	#define ACD_OPEN 0x0002
	65	#endif
	66
	67	acinit(hd)
	68	register struct hp_device *hd;
	69	{
	70	int unit = hd->hp_unit;
	71	register struct ac_softc *sc = &ac_softc[unit];
	72
	73	sc->sc_hd = hd;
	74	sc->sc_punit = hd->hp_flags & 7;
	75	if (acident(sc, hd) < 0)
	76	return(0);
	77	sc->sc_dq.dq_unit = unit;
	78	sc->sc_dq.dq_ctlr = hd->hp_ctlr;
	79	sc->sc_dq.dq_slave = hd->hp_slave;
	80	sc->sc_dq.dq_driver = &acdriver;
	81	sc->sc_bp = &acbuf[unit];
	82	sc->sc_cmd = &accmd[unit];
	83	sc->sc_flags = ACF_ALIVE;
	84	return(1);
	85	}
	86
	87	acident(sc, hd)
	88	register struct ac_softc *sc;
	89	register struct hp_device *hd;
	90	{
	91	int unit;
	92	register int ctlr, slave;
	93	int i, stat;
	94	int tries = 5;
	95	char idstr[32];
	96	struct scsi_inquiry inqbuf;
	97	static struct scsi_fmt_cdb inq = {
	98	6,
	99	CMD_INQUIRY, 0, 0, 0, sizeof(inqbuf), 0
	100	};
	101
	102	ctlr = hd->hp_ctlr;
	103	slave = hd->hp_slave;
104	unit = sc->sc_punit;
105	scsi_delay(-1);
106
107	/*
108	* See if device is ready
109	*/
110	while ((i = scsi_test_unit_rdy(ctlr, slave, unit)) != 0) {
111	if (i == -1 \|\| --tries < 0)
112	/* doesn't exist or not a CCS device */
113	goto failed;
114	if (i == STS_CHECKCOND) {
115	u_char sensebuf[128];
116	struct scsi_xsense *sp;
117
118	scsi_request_sense(ctlr, slave, unit,
119	sensebuf, sizeof(sensebuf));
120	sp = (struct scsi_xsense *) sensebuf;
121	if (sp->class == 7 && sp->key == 6)
122	/* drive doing an RTZ -- give it a while */
123	DELAY(1000000);
124	}
125	DELAY(1000);
126	}
127	/*
128	* Find out if it is an autochanger
129	*/
130	if (scsi_immed_command(ctlr, slave, unit, &inq,
131	(u_char *)&inqbuf, sizeof(inqbuf), B_READ))
132	goto failed;
133
134	if (inqbuf.type != 8 \|\| inqbuf.qual != 0x80 \|\| inqbuf.version != 2)
135	goto failed;
136
137	bcopy((caddr_t)&inqbuf.vendor_id, (caddr_t)idstr, 28);
138	for (i = 27; i > 23; --i)
139	if (idstr[i] != ' ')
140	break;
141	idstr[i+1] = 0;
142	for (i = 23; i > 7; --i)
143	if (idstr[i] != ' ')
144	break;
145	idstr[i+1] = 0;
146	for (i = 7; i >= 0; --i)
147	if (idstr[i] != ' ')
148	break;
149	idstr[i+1] = 0;
150	printf("ac%d: %s %s rev %s\n", hd->hp_unit,
151	&idstr[0], &idstr[8], &idstr[24]);
152
153	scsi_delay(0);
154	return(inqbuf.type);
155	failed:
156	scsi_delay(0);
157	return(-1);
158	}
159
160	/ARGSUSED/
161	acopen(dev, flag, mode, p)
162	dev_t dev;
163	int flag, mode;
164	struct proc *p;
165	{
166	register int unit = minor(dev);
167	register struct ac_softc *sc = &ac_softc[unit];
168	int error = 0;
169
170	if (unit >= NAC \|\| (sc->sc_flags & ACF_ALIVE) == 0)
dec74f00 MH	171	return(ENXIO);
	172	if (sc->sc_flags & ACF_OPEN)
	173	return(EBUSY);
	174	/*
	175	* Since acgeteinfo can block we mark the changer open now.
	176	*/
	177	sc->sc_flags \|= ACF_OPEN;
	178	if (acgeteinfo(dev)) {
	179	sc->sc_flags &= ~ACF_OPEN;
	180	return(EIO);
f1a9d6c6	181	}
dec74f00	182	return(0);
9acfa6cd MH	183	}
	184
	185	/ARGSUSED/
	186	acclose(dev, flag, mode, p)
	187	dev_t dev;
	188	int flag, mode;
	189	struct proc *p;
	190	{
	191	struct ac_softc *sc = &ac_softc[minor(dev)];
	192
	193	sc->sc_flags &= ~ACF_OPEN;
	194	}
	195
	196	#define ACRESLEN(ep) \
	197	(8 + (ep)->nmte12 + (ep)->nse12 + (ep)->niee12 + (ep)->ndte20)
	198
	199	/ARGSUSED/
	200	acioctl(dev, cmd, data, flag, p)
	201	dev_t dev;
	202	int cmd;
	203	caddr_t data;
	204	int flag;
	205	struct proc *p;
	206	{
	207	register struct ac_softc *sc = &ac_softc[minor(dev)];
	208	char *dp;
	209	int dlen, error = 0;
	210
	211	switch (cmd) {
	212
	213	default:
	214	return (EINVAL);
	215
	216	/* perform an init element status and mode sense to reset state */
	217	case ACIOCINIT:
	218	error = accommand(dev, ACCMD_INITES, (caddr_t)0, 0);
	219	if (!error)
	220	error = acgeteinfo(dev);
	221	break;
	222
	223	/* copy internal element information */
	224	case ACIOCGINFO:
	225	(struct acinfo )data = sc->sc_einfo;
	226	break;
	227
	228	case ACIOCRAWES:
	229	{
	230	struct acbuffer acbp = (struct acbuffer )data;
	231
	232	dlen = ACRESLEN(&sc->sc_einfo);
	233	dp = (char *) malloc(dlen, M_DEVBUF, M_WAITOK);
	234	error = accommand(dev, ACCMD_READES, dp, dlen);
	235	if (!error) {
	236	dlen = (int )&dp[4] + 8;
	237	if (dlen > acbp->buflen)
	238	dlen = acbp->buflen;
	239	error = copyout(dp, acbp->bufptr, dlen);
	240	}
	241	break;
	242	}
	243
	244	case ACIOCGSTAT:
	245	{
	246	struct acbuffer acbp = (struct acbuffer )data;
247
248	dlen = ACRESLEN(&sc->sc_einfo);
249	dp = (char *) malloc(dlen, M_DEVBUF, M_WAITOK);
250	error = accommand(dev, ACCMD_READES, dp, dlen);
251	if (!error) {
252	int ne;
253	char *tbuf;
254
255	ne = sc->sc_einfo.nmte + sc->sc_einfo.nse +
256	sc->sc_einfo.niee + sc->sc_einfo.ndte;
257	dlen = ne * sizeof(struct aceltstat);
258	tbuf = (char *) malloc(dlen, M_DEVBUF, M_WAITOK);
259	acconvert(dp, tbuf, ne);
260	if (dlen > acbp->buflen)
261	dlen = acbp->buflen;
262	error = copyout(tbuf, acbp->bufptr, dlen);
263	free(tbuf, M_DEVBUF);
264	}
265	free(dp, M_DEVBUF);
266	break;
267	}
268
269	case ACIOCMOVE:
270	error = accommand(dev, ACCMD_MOVEM, data,
271	sizeof(struct acmove));
272	break;
273	}
274	return(error);
275	}
276
277	accommand(dev, command, bufp, buflen)
278	dev_t dev;
279	int command;
280	char *bufp;
281	int buflen;
282	{
283	int unit = minor(dev);
284	register struct ac_softc *sc = &ac_softc[unit];
285	register struct buf *bp = sc->sc_bp;
286	register struct scsi_fmt_cdb *cmd = sc->sc_cmd;
287	int error;
288
289	#ifdef DEBUG
290	if (ac_debug & ACD_FOLLOW)
291	printf("accommand(dev=%x, cmd=%x, buf=%x, buflen=%x)\n",
292	dev, command, bufp, buflen);
293	#endif
294	if (sc->sc_flags & ACF_ACTIVE)
295	panic("accommand: active!");
296
297	sc->sc_flags \|= ACF_ACTIVE;
298	bzero((caddr_t)cmd->cdb, sizeof(cmd->cdb));
299	cmd->cdb[0] = command;
300
301	switch (command) {
302	case ACCMD_INITES:
303	cmd->len = 6;
304	break;
305	case ACCMD_READES:
306	cmd->len = 12;
307	(short )&cmd->cdb[2] = 0;
308	(short )&cmd->cdb[4] =
309	sc->sc_einfo.nmte + sc->sc_einfo.nse +
310	sc->sc_einfo.niee + sc->sc_einfo.ndte;
311	cmd->cdb[7] = buflen >> 16;
312	cmd->cdb[8] = buflen >> 8;
313	cmd->cdb[9] = buflen;
314	break;
315	case ACCMD_MODESENSE:
316	cmd->len = 6;
317	cmd->cdb[2] = 0x3F; /* all pages */
318	cmd->cdb[4] = buflen;
319	break;
320	case ACCMD_MOVEM:
321	cmd->len = 12;
322	(short )&cmd->cdb[2] = sc->sc_picker;
323	(short )&cmd->cdb[4] = (short )&bufp[0];
324	(short )&cmd->cdb[6] = (short )&bufp[2];
325	if ((short )&bufp[4] & AC_INVERT)
326	cmd->cdb[10] = 1;
327	bufp = 0;
328	buflen = 0;
329	break;
330	default:
331	panic("accommand: bad command");
332	}
333	bp->b_flags = B_BUSY\|B_READ;
334	bp->b_dev = dev;
335	bp->b_un.b_addr = bufp;
336	bp->b_bcount = buflen;
337	bp->b_resid = 0;
338	bp->b_blkno = 0;
339	bp->b_error = 0;
340	if (scsireq(&sc->sc_dq))
341	acstart(unit);
342	error = biowait(bp);
343	sc->sc_flags &= ~ACF_ACTIVE;
344	return (error);
345	}
346
347	acstart(unit)
348	int unit;
349	{
350	#ifdef DEBUG
351	if (ac_debug & ACD_FOLLOW)
352	printf("acstart(unit=%x)\n", unit);
353	#endif
354	if (scsiustart(ac_softc[unit].sc_hd->hp_ctlr))
355	acgo(unit);
356	}
357
358	acgo(unit)
359	int unit;
360	{
361	register struct ac_softc *sc = &ac_softc[unit];
362	register struct buf *bp = sc->sc_bp;
363	struct hp_device *hp = sc->sc_hd;
364	int stat;
365
366	#ifdef DEBUG
367	if (ac_debug & ACD_FOLLOW)
368	printf("acgo(unit=%x): ", unit);
369	#endif
370	stat = scsigo(hp->hp_ctlr, hp->hp_slave, sc->sc_punit,
371	bp, sc->sc_cmd, 0);
372	#ifdef DEBUG
373	if (ac_debug & ACD_FOLLOW)
374	printf("scsigo returns %x\n", stat);
375	#endif
376	if (stat) {
377	bp->b_error = EIO;
378	bp->b_flags \|= B_ERROR;
379	(void) biodone(bp);
380	scsifree(&sc->sc_dq);
381	}
382	}
383
384	acintr(unit, stat)
385	int unit, stat;
386	{
387	register struct ac_softc *sc = &ac_softc[unit];
388	register struct buf *bp = sc->sc_bp;
389	u_char sensebuf[78];
390	struct scsi_xsense *sp;
391
392	#ifdef DEBUG
393	if (ac_debug & ACD_FOLLOW)
394	printf("acintr(unit=%x, stat=%x)\n", unit, stat);
395	#endif
396	switch (stat) {
397	case 0:
398	bp->b_resid = 0;
399	break;
400	case STS_CHECKCOND:
401	scsi_request_sense(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave,
402	sc->sc_punit, sensebuf, sizeof sensebuf);
403	sp = (struct scsi_xsense *)sensebuf;
404	printf("ac%d: acintr sense key=%x, ac=%x, acq=%x\n",
405	unit, sp->key, sp->info4, sp->len);
406	bp->b_flags \|= B_ERROR;
407	bp->b_error = EIO;
408	break;
409	default:
410	printf("ac%d: acintr unknown status 0x%x\n", unit, stat);
411	break;
412	}
413	(void) biodone(sc->sc_bp);
414	scsifree(&sc->sc_dq);
415	}
416
417	acgeteinfo(dev)
418	dev_t dev;
419	{
420	register struct ac_softc *sc = &ac_softc[minor(dev)];
421	register char *bp;
422	char msbuf[48];
423	int error;
424
425	bzero(msbuf, sizeof msbuf);
426	error = accommand(dev, ACCMD_MODESENSE, msbuf, sizeof msbuf);
427	if (error)
428	return(error);
429	bp = &msbuf[4];
430	while (bp < &msbuf[48]) {
431	switch (bp[0] & 0x3F) {
432	case 0x1D:
433	sc->sc_einfo = (struct acinfo )&bp[2];
434	sc->sc_picker = sc->sc_einfo.fmte; /* XXX */
435	return(0);
436	case 0x1E:
437	bp += 4;
438	break;
439	case 0x1F:
440	bp += 20;
441	break;
442	default:
443	printf("acgeteinfo: bad page type %x\n", bp[0]);
444	return(EIO);
445	}
446	}
447	return(EIO);
448	}
449
450	acconvert(sbuf, dbuf, ne)
451	char sbuf, dbuf;
452	int ne;
453	{
454	register struct aceltstat ep = (struct aceltstat )dbuf;
455	register struct ac_restatphdr *phdr;
456	register struct ac_restatdb *dbp;
457	struct ac_restathdr *hdr;
458	#ifdef DEBUG
459	register int bcount;
460	#endif
461
462	hdr = (struct ac_restathdr *)&sbuf[0];
463	sbuf += sizeof *hdr;
464	#ifdef DEBUG
465	if (ac_debug & ACD_FOLLOW)
466	printf("element status: first=%d, num=%d, len=%d\n",
467	hdr->ac_felt, hdr->ac_nelt, hdr->ac_bcount);
468	if (hdr->ac_nelt != ne) {
469	printf("acconvert: # of elements, %d != %d\n",
470	hdr->ac_nelt, ne);
471	if (hdr->ac_nelt < ne)
472	ne = hdr->ac_nelt;
473	}
474	bcount = hdr->ac_bcount;
475	#endif
476	while (ne) {
477	phdr = (struct ac_restatphdr *)sbuf;
478	sbuf += sizeof *phdr;
479	#ifdef DEBUG
480	bcount -= sizeof *phdr;
481	#endif
482	dbp = (struct ac_restatdb *)sbuf;
483	sbuf += phdr->ac_bcount;
484	#ifdef DEBUG
485	bcount -= phdr->ac_bcount;
486	#endif
487	while (dbp < (struct ac_restatdb *)sbuf) {
488	ep->type = phdr->ac_type;
489	ep->eaddr = dbp->ac_eaddr;
490	ep->flags = 0;
491	if (dbp->ac_full)
492	ep->flags \|= AC_FULL;
493	if (dbp->ac_exc)
494	ep->flags \|= AC_ERROR;
495	if (dbp->ac_acc)
496	ep->flags \|= AC_ACCESS;
497	dbp = (struct ac_restatdb *)
498	((char *)dbp + phdr->ac_dlen);
499	ep++;
500	ne--;
501	}
502	#ifdef DEBUG
503	if (ne < 0 \|\| bcount < 0)
504	panic("acconvert: inconsistant");
505	#endif
506	}
507	}
508	#endif