xref: /dragonfly/sys/dev/disk/nata/atapi-tape.c (revision b7367ef6)
1 /*-
2  * Copyright (c) 1998 - 2006 S�ren Schmidt <sos@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD: src/sys/dev/ata/atapi-tape.c,v 1.101 2006/01/05 21:27:19 sos Exp $
27  * $DragonFly: src/sys/dev/disk/nata/atapi-tape.c,v 1.3 2007/06/03 04:48:29 dillon Exp $
28  */
29 
30 #include "opt_ata.h"
31 
32 #include <sys/param.h>
33 #include <sys/bio.h>
34 #include <sys/buf.h>
35 #include <sys/bus.h>
36 #include <sys/conf.h>
37 #include <sys/device.h>
38 #include <sys/devicestat.h>
39 #include <sys/disk.h>
40 #include <sys/kernel.h>
41 #include <sys/libkern.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mtio.h>
45 #include <sys/nata.h>
46 #include <sys/systm.h>
47 
48 #include "ata-all.h"
49 #include "atapi-tape.h"
50 #include "ata_if.h"
51 
52 /* device structure */
53 static  d_open_t        ast_open;
54 static  d_close_t       ast_close;
55 static  d_ioctl_t       ast_ioctl;
56 static  d_strategy_t    ast_strategy;
57 static struct dev_ops ast_ops = {
58 	{ "ast", 119, D_TAPE | D_TRACKCLOSE },
59 	.d_open =	ast_open,
60 	.d_close =	ast_close,
61 	.d_read =	physread,
62 	.d_write =	physwrite,
63 	.d_ioctl =	ast_ioctl,
64 	.d_strategy =	ast_strategy
65 };
66 
67 /* prototypes */
68 static int ast_sense(device_t);
69 static void ast_describe(device_t);
70 static void ast_done(struct ata_request *);
71 static int ast_mode_sense(device_t, int, void *, int);
72 static int ast_mode_select(device_t, void *, int);
73 static int ast_write_filemark(device_t, u_int8_t);
74 static int ast_read_position(device_t, int, struct ast_readposition *);
75 static int ast_space(device_t, u_int8_t, int32_t);
76 static int ast_locate(device_t, int, u_int32_t);
77 static int ast_prevent_allow(device_t, int);
78 static int ast_load_unload(device_t, u_int8_t);
79 static int ast_rewind(device_t);
80 static int ast_erase(device_t);
81 static int ast_test_ready(device_t);
82 static int ast_wait_dsc(device_t, int);
83 
84 /* internal vars */
85 static u_int64_t ast_total = 0;
86 static MALLOC_DEFINE(M_AST, "ast_driver", "ATAPI tape driver buffers");
87 
88 static int
89 ast_probe(device_t dev)
90 {
91     struct ata_device *atadev = device_get_softc(dev);
92 
93     if ((atadev->param.config & ATA_PROTO_ATAPI) &&
94 	(atadev->param.config & ATA_ATAPI_TYPE_MASK) == ATA_ATAPI_TYPE_TAPE)
95 	return 0;
96     else
97 	return ENXIO;
98 }
99 
100 static int
101 ast_attach(device_t dev)
102 {
103     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
104     struct ata_device *atadev = device_get_softc(dev);
105     struct ast_softc *stp;
106     struct ast_readposition position;
107     cdev_t cdev;
108 
109     stp = kmalloc(sizeof(struct ast_softc), M_AST, M_WAITOK | M_ZERO);
110     device_set_ivars(dev, stp);
111     ATA_SETMODE(device_get_parent(dev), dev);
112 
113     if (ast_sense(dev)) {
114 	device_set_ivars(dev, NULL);
115 	kfree(stp, M_AST);
116 	return ENXIO;
117     }
118     if (!strcmp(atadev->param.model, "OnStream DI-30")) {
119 	struct ast_transferpage transfer;
120 	struct ast_identifypage identify;
121 
122 	stp->flags |= F_ONSTREAM;
123 	bzero(&transfer, sizeof(struct ast_transferpage));
124 	ast_mode_sense(dev, ATAPI_TAPE_TRANSFER_PAGE,
125 		       &transfer, sizeof(transfer));
126 	bzero(&identify, sizeof(struct ast_identifypage));
127 	ast_mode_sense(dev, ATAPI_TAPE_IDENTIFY_PAGE,
128 		       &identify, sizeof(identify));
129 	strncpy(identify.ident, "FBSD", 4);
130 	ast_mode_select(dev, &identify, sizeof(identify));
131 	ast_read_position(dev, 0, &position);
132     }
133 
134     devstat_add_entry(&stp->stats, "ast", device_get_unit(dev), DEV_BSIZE,
135 		      DEVSTAT_NO_ORDERED_TAGS,
136 		      DEVSTAT_TYPE_SEQUENTIAL | DEVSTAT_TYPE_IF_IDE,
137 		      DEVSTAT_PRIORITY_TAPE);
138     dev_ops_add(&ast_ops, dkunitmask(), dkmakeunit(device_get_unit(dev)));
139     cdev = make_dev(&ast_ops, 2 * device_get_unit(dev), UID_ROOT, GID_OPERATOR,
140 		    0640, "ast%d", device_get_unit(dev));
141     reference_dev(cdev);
142     cdev->si_drv1 = dev;
143     if (ch->dma)
144 	cdev->si_iosize_max = ch->dma->max_iosize;
145     else
146 	cdev->si_iosize_max = DFLTPHYS;
147     stp->cdev1 = cdev;
148     cdev = make_dev(&ast_ops, 2 * device_get_unit(dev) + 1, UID_ROOT,
149 		    GID_OPERATOR, 0640, "nast%d", device_get_unit(dev));
150     reference_dev(cdev);
151     cdev->si_drv1 = dev;
152     if (ch->dma)
153 	cdev->si_iosize_max = ch->dma->max_iosize;
154     else
155 	cdev->si_iosize_max = DFLTPHYS;
156     stp->cdev2 = cdev;
157 
158     /* announce we are here and ready */
159     ast_describe(dev);
160     return 0;
161 }
162 
163 static int
164 ast_detach(device_t dev)
165 {
166     struct ast_softc *stp = device_get_ivars(dev);
167 
168     /* detroy devices from the system so we dont get any further requests */
169     destroy_dev(stp->cdev1);
170     destroy_dev(stp->cdev2);
171 
172     /* fail requests on the queue and any thats "in flight" for this device */
173     ata_fail_requests(dev);
174 
175     /* dont leave anything behind */
176     dev_ops_remove(&ast_ops, dkunitmask(), dkmakeunit(device_get_unit(dev)));
177     devstat_remove_entry(&stp->stats);
178     device_set_ivars(dev, NULL);
179     kfree(stp, M_AST);
180     return 0;
181 }
182 
183 static void
184 ast_shutdown(device_t dev)
185 {
186     struct ata_device *atadev = device_get_softc(dev);
187 
188     if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
189 	ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
190 }
191 
192 static int
193 ast_reinit(device_t dev)
194 {
195     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
196     struct ata_device *atadev = device_get_softc(dev);
197     struct ast_softc *stp = device_get_ivars(dev);
198 
199     if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATAPI_MASTER)) ||
200 	((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATAPI_SLAVE))) {
201 	device_set_ivars(dev, NULL);
202 	kfree(stp, M_AST);
203 	return 1;
204     }
205     ATA_SETMODE(device_get_parent(dev), dev);
206     return 0;
207 }
208 
209 static int
210 ast_open(struct dev_open_args *ap)
211 {
212     device_t dev = ap->a_head.a_dev->si_drv1;
213     struct ata_device *atadev = device_get_softc(dev);
214     struct ast_softc *stp = device_get_ivars(dev);
215 
216     if (!stp)
217 	return ENXIO;
218     if (!device_is_attached(dev))
219 	return EBUSY;
220 
221     ast_test_ready(dev);
222     if (stp->cap.lock)
223 	ast_prevent_allow(dev, 1);
224     if (ast_sense(dev))
225 	device_printf(dev, "sense media type failed\n");
226 
227     atadev->flags &= ~ATA_D_MEDIA_CHANGED;
228     stp->flags &= ~(F_DATA_WRITTEN | F_FM_WRITTEN);
229     ast_total = 0;
230     return 0;
231 }
232 
233 static int
234 ast_close(struct dev_close_args *ap)
235 {
236     device_t dev = ap->a_head.a_dev->si_drv1;
237     struct ast_softc *stp = device_get_ivars(dev);
238     cdev_t cdev = ap->a_head.a_dev;
239 
240     /* flush buffers, some drives fail here, they should report ctl = 0 */
241     if (stp->cap.ctl && (stp->flags & F_DATA_WRITTEN))
242 	ast_write_filemark(dev, 0);
243 
244     /* write filemark if data written to tape */
245     if (!(stp->flags & F_ONSTREAM) &&
246 	(stp->flags & (F_DATA_WRITTEN | F_FM_WRITTEN)) == F_DATA_WRITTEN)
247 	ast_write_filemark(dev, ATAPI_WF_WRITE);
248 
249     /* if minor is even rewind on close */
250     if (!(minor(cdev) & 0x01))
251 	ast_rewind(dev);
252 
253     if (stp->cap.lock && count_dev(cdev) == 1)
254 	ast_prevent_allow(dev, 0);
255 
256     stp->flags &= ~F_CTL_WARN;
257 #ifdef AST_DEBUG
258     device_printf(dev, "%llu total bytes transferred\n",
259 		  (unsigned long long)ast_total);
260 #endif
261     return 0;
262 }
263 
264 static int
265 ast_ioctl(struct dev_ioctl_args *ap)
266 {
267     device_t dev = ap->a_head.a_dev->si_drv1;
268     struct ast_softc *stp = device_get_ivars(dev);
269     int error = 0;
270 
271     switch (ap->a_cmd) {
272     case MTIOCGET:
273 	{
274 	    struct mtget *g = (struct mtget *)ap->a_data;
275 
276 	    bzero(g, sizeof(struct mtget));
277 	    g->mt_type = 7;
278 	    g->mt_density = 1;
279 	    g->mt_blksiz = stp->blksize;
280 	    g->mt_comp = stp->cap.compress;
281 	    g->mt_density0 = 0; g->mt_density1 = 0;
282 	    g->mt_density2 = 0; g->mt_density3 = 0;
283 	    g->mt_blksiz0 = 0; g->mt_blksiz1 = 0;
284 	    g->mt_blksiz2 = 0; g->mt_blksiz3 = 0;
285 	    g->mt_comp0 = 0; g->mt_comp1 = 0;
286 	    g->mt_comp2 = 0; g->mt_comp3 = 0;
287 	}
288 	break;
289 
290     case MTIOCTOP:
291 	{
292 	    int i;
293 	    struct mtop *mt = (struct mtop *)ap->a_data;
294 
295 	    switch ((int16_t) (mt->mt_op)) {
296 
297 	    case MTWEOF:
298 		for (i=0; i < mt->mt_count && !error; i++)
299 		    error = ast_write_filemark(dev, ATAPI_WF_WRITE);
300 		break;
301 
302 	    case MTFSF:
303 		if (mt->mt_count)
304 		    error = ast_space(dev, ATAPI_SP_FM, mt->mt_count);
305 		break;
306 
307 	    case MTBSF:
308 		if (mt->mt_count)
309 		    error = ast_space(dev, ATAPI_SP_FM, -(mt->mt_count));
310 		break;
311 
312 	    case MTREW:
313 		error = ast_rewind(dev);
314 		break;
315 
316 	    case MTOFFL:
317 		error = ast_load_unload(dev, ATAPI_SS_EJECT);
318 		break;
319 
320 	    case MTNOP:
321 		error = ast_write_filemark(dev, 0);
322 		break;
323 
324 	    case MTERASE:
325 		error = ast_erase(dev);
326 		break;
327 
328 	    case MTEOD:
329 		error = ast_space(dev, ATAPI_SP_EOD, 0);
330 		break;
331 
332 	    case MTRETENS:
333 		error = ast_load_unload(dev, ATAPI_SS_RETENSION|ATAPI_SS_LOAD);
334 		break;
335 
336 	    case MTFSR:
337 	    case MTBSR:
338 	    case MTCACHE:
339 	    case MTNOCACHE:
340 	    case MTSETBSIZ:
341 	    case MTSETDNSTY:
342 	    case MTCOMP:
343 	    default:
344 		error = EINVAL;
345 	    }
346 	}
347 	break;
348 
349     case MTIOCRDSPOS:
350 	{
351 	    struct ast_readposition position;
352 
353 	    if ((error = ast_read_position(dev, 0, &position)))
354 		break;
355 	    *(u_int32_t *)ap->a_data = position.tape;
356 	}
357 	break;
358 
359     case MTIOCRDHPOS:
360 	{
361 	    struct ast_readposition position;
362 
363 	    if ((error = ast_read_position(dev, 1, &position)))
364 		break;
365 	    *(u_int32_t *)ap->a_data = position.tape;
366 	}
367 	break;
368 
369     case MTIOCSLOCATE:
370 	error = ast_locate(dev, 0, *(u_int32_t *)ap->a_data);
371 	break;
372 
373     case MTIOCHLOCATE:
374 	error = ast_locate(dev, 1, *(u_int32_t *)ap->a_data);
375 	break;
376 
377     default:
378 	error = ata_device_ioctl(dev, ap->a_cmd, ap->a_data);
379     }
380     return error;
381 }
382 
383 static int
384 ast_strategy(struct dev_strategy_args *ap)
385 {
386     device_t dev = ap->a_head.a_dev->si_drv1;
387     struct bio *bp = ap->a_bio;
388     struct buf *bbp = bp->bio_buf;
389     struct ata_device *atadev = device_get_softc(dev);
390     struct ast_softc *stp = device_get_ivars(dev);
391     struct ata_request *request;
392     u_int32_t blkcount;
393     int8_t ccb[16];
394 
395     /* if it's a null transfer, return immediatly. */
396     if (bbp->b_bcount == 0) {
397 	bbp->b_resid = 0;
398 	biodone(bp);
399 	return 0;
400     }
401     if (!(bbp->b_cmd == BUF_CMD_READ) && stp->flags & F_WRITEPROTECT) {
402 	bbp->b_flags |= B_ERROR;
403 	bbp->b_error = EPERM;
404 	biodone(bp);
405 	return 0;
406     }
407 
408     /* check for != blocksize requests */
409     if (bbp->b_bcount % stp->blksize) {
410 	device_printf(dev, "transfers must be multiple of %d\n", stp->blksize);
411 	bbp->b_flags |= B_ERROR;
412 	bbp->b_error = EIO;
413 	biodone(bp);
414 	return 0;
415     }
416 
417     /* warn about transfers bigger than the device suggests */
418     if (bbp->b_bcount > stp->blksize * stp->cap.ctl) {
419 	if ((stp->flags & F_CTL_WARN) == 0) {
420 	    device_printf(dev, "WARNING: CTL exceeded %d>%d\n",
421 			  bbp->b_bcount, stp->blksize * stp->cap.ctl);
422 	    stp->flags |= F_CTL_WARN;
423 	}
424     }
425 
426     bzero(ccb, sizeof(ccb));
427 
428     if (bbp->b_cmd == BUF_CMD_READ)
429 	ccb[0] = ATAPI_READ;
430     else
431 	ccb[0] = ATAPI_WRITE;
432 
433     blkcount = bbp->b_bcount / stp->blksize;
434 
435     ccb[1] = 1;
436     ccb[2] = blkcount >> 16;
437     ccb[3] = blkcount >> 8;
438     ccb[4] = blkcount;
439 
440     if (!(request = ata_alloc_request())) {
441 	bbp->b_flags |= B_ERROR;
442 	bbp->b_error = ENOMEM;
443 	biodone(bp);
444 	return 0;
445     }
446     request->dev = dev;
447     request->bio = bp;
448     bcopy(ccb, request->u.atapi.ccb,
449 	  (atadev->param.config & ATA_PROTO_MASK) ==
450 	  ATA_PROTO_ATAPI_12 ? 16 : 12);
451     request->data = bbp->b_data;
452     request->bytecount = blkcount * stp->blksize;
453     request->transfersize = min(request->bytecount, 65534);
454     request->timeout = (ccb[0] == ATAPI_WRITE_BIG) ? 180 : 120;
455     request->retries = 2;
456     request->callback = ast_done;
457     switch (bbp->b_cmd) {
458     case BUF_CMD_READ:
459 	request->flags |= (ATA_R_ATAPI | ATA_R_READ);
460 	break;
461     case BUF_CMD_WRITE:
462 	request->flags |= (ATA_R_ATAPI | ATA_R_WRITE);
463 	break;
464     default:
465 	device_printf(dev, "unknown BUF operation\n");
466 	ata_free_request(request);
467 	bbp->b_flags |= B_ERROR;
468 	bbp->b_error = EIO;
469 	biodone(bp);
470 	return 0;
471     }
472     devstat_start_transaction(&stp->stats);
473     ata_queue_request(request);
474     return 0;
475 }
476 
477 static void
478 ast_done(struct ata_request *request)
479 {
480     struct ast_softc *stp = device_get_ivars(request->dev);
481     struct bio *bp = request->bio;
482     struct buf *bbp = bp->bio_buf;
483 
484     /* finish up transfer */
485     if ((bbp->b_error = request->result))
486 	bbp->b_flags |= B_ERROR;
487     if (bbp->b_cmd == BUF_CMD_WRITE)
488 	stp->flags |= F_DATA_WRITTEN;
489     bbp->b_resid = bbp->b_bcount - request->donecount;
490     ast_total += (bbp->b_bcount - bbp->b_resid);
491     devstat_end_transaction_buf(&stp->stats, bbp);
492     biodone(bp);
493     ata_free_request(request);
494 }
495 
496 static int
497 ast_sense(device_t dev)
498 {
499     struct ast_softc *stp = device_get_ivars(dev);
500     int count;
501 
502     /* get drive capabilities, some bugridden drives needs this repeated */
503     for (count = 0 ; count < 5 ; count++) {
504 	if (!ast_mode_sense(dev, ATAPI_TAPE_CAP_PAGE,
505 			    &stp->cap, sizeof(stp->cap)) &&
506 	    stp->cap.page_code == ATAPI_TAPE_CAP_PAGE) {
507 	    if (stp->cap.blk32k)
508 		stp->blksize = 32768;
509 	    if (stp->cap.blk1024)
510 		stp->blksize = 1024;
511 	    if (stp->cap.blk512)
512 		stp->blksize = 512;
513 	    if (!stp->blksize)
514 		continue;
515 	    stp->cap.max_speed = ntohs(stp->cap.max_speed);
516 	    stp->cap.max_defects = ntohs(stp->cap.max_defects);
517 	    stp->cap.ctl = ntohs(stp->cap.ctl);
518 	    stp->cap.speed = ntohs(stp->cap.speed);
519 	    stp->cap.buffer_size = ntohs(stp->cap.buffer_size);
520 	    return 0;
521 	}
522     }
523     return 1;
524 }
525 
526 static int
527 ast_mode_sense(device_t dev, int page, void *pagebuf, int pagesize)
528 {
529     int8_t ccb[16] = { ATAPI_MODE_SENSE, 0x08, page, pagesize>>8, pagesize,
530 		       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
531     int error;
532 
533     error = ata_atapicmd(dev, ccb, pagebuf, pagesize, ATA_R_READ, 10);
534     return error;
535 }
536 
537 static int
538 ast_mode_select(device_t dev, void *pagebuf, int pagesize)
539 {
540     int8_t ccb[16] = { ATAPI_MODE_SELECT, 0x10, 0, pagesize>>8, pagesize,
541 		       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
542 
543     return ata_atapicmd(dev, ccb, pagebuf, pagesize, 0, 10);
544 }
545 
546 static int
547 ast_write_filemark(device_t dev, u_int8_t function)
548 {
549     struct ast_softc *stp = device_get_ivars(dev);
550     int8_t ccb[16] = { ATAPI_WEOF, 0x01, 0, 0, function, 0, 0, 0,
551 		       0, 0, 0, 0, 0, 0, 0, 0 };
552     int error;
553 
554     if (stp->flags & F_ONSTREAM)
555 	ccb[4] = 0x00;          /* only flush buffers supported */
556     else {
557 	if (function) {
558 	    if (stp->flags & F_FM_WRITTEN)
559 		stp->flags &= ~F_DATA_WRITTEN;
560 	    else
561 		stp->flags |= F_FM_WRITTEN;
562 	}
563     }
564     error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
565     if (error)
566 	return error;
567     return ast_wait_dsc(dev, 10*60);
568 }
569 
570 static int
571 ast_read_position(device_t dev, int hard, struct ast_readposition *position)
572 {
573     int8_t ccb[16] = { ATAPI_READ_POSITION, (hard ? 0x01 : 0), 0, 0, 0, 0, 0, 0,
574 		       0, 0, 0, 0, 0, 0, 0, 0 };
575     int error;
576 
577     error = ata_atapicmd(dev, ccb, (caddr_t)position,
578 			 sizeof(struct ast_readposition), ATA_R_READ, 10);
579     position->tape = ntohl(position->tape);
580     position->host = ntohl(position->host);
581     return error;
582 }
583 
584 static int
585 ast_space(device_t dev, u_int8_t function, int32_t count)
586 {
587     int8_t ccb[16] = { ATAPI_SPACE, function, count>>16, count>>8, count,
588 		       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
589 
590     return ata_atapicmd(dev, ccb, NULL, 0, 0, 60*60);
591 }
592 
593 static int
594 ast_locate(device_t dev, int hard, u_int32_t pos)
595 {
596     int8_t ccb[16] = { ATAPI_LOCATE, 0x01 | (hard ? 0x4 : 0), 0,
597 		       pos>>24, pos>>16, pos>>8, pos,
598 		       0, 0, 0, 0, 0, 0, 0, 0, 0 };
599     int error;
600 
601     error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
602     if (error)
603 	return error;
604     return ast_wait_dsc(dev, 60*60);
605 }
606 
607 static int
608 ast_prevent_allow(device_t dev, int lock)
609 {
610     int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock,
611 		       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
612 
613     return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
614 }
615 
616 static int
617 ast_load_unload(device_t dev, u_int8_t function)
618 {
619     struct ast_softc *stp = device_get_ivars(dev);
620     int8_t ccb[16] = { ATAPI_START_STOP, 0x01, 0, 0, function, 0, 0, 0,
621 		       0, 0, 0, 0, 0, 0, 0, 0 };
622     int error;
623 
624     if ((function & ATAPI_SS_EJECT) && !stp->cap.eject)
625 	return 0;
626     error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
627     if (error)
628 	return error;
629     tsleep((caddr_t)&error, 0, "astlu", 1 * hz);
630     if (function == ATAPI_SS_EJECT)
631 	return 0;
632     return ast_wait_dsc(dev, 60*60);
633 }
634 
635 static int
636 ast_rewind(device_t dev)
637 {
638     int8_t ccb[16] = { ATAPI_REZERO, 0x01, 0, 0, 0, 0, 0, 0,
639 		       0, 0, 0, 0, 0, 0, 0, 0 };
640     int error;
641 
642     error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
643     if (error)
644 	return error;
645     return ast_wait_dsc(dev, 60*60);
646 }
647 
648 static int
649 ast_erase(device_t dev)
650 {
651     int8_t ccb[16] = { ATAPI_ERASE, 3, 0, 0, 0, 0, 0, 0,
652 		       0, 0, 0, 0, 0, 0, 0, 0 };
653     int error;
654 
655     if ((error = ast_rewind(dev)))
656 	return error;
657 
658     return ata_atapicmd(dev, ccb, NULL, 0, 0, 60*60);
659 }
660 
661 static int
662 ast_test_ready(device_t dev)
663 {
664     int8_t ccb[16] = { ATAPI_TEST_UNIT_READY, 0, 0, 0, 0,
665 		       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
666 
667     return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
668 }
669 
670 static int
671 ast_wait_dsc(device_t dev, int timeout)
672 {
673     int error = 0;
674     int8_t ccb[16] = { ATAPI_POLL_DSC, 0, 0, 0, 0,
675 		       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
676 
677     timeout *= hz;
678     while (timeout > 0) {
679 	error = ata_atapicmd(dev, ccb, NULL, 0, 0, 0);
680 	if (error != EBUSY)
681 	    break;
682 	tsleep(&error, 0, "atpwt", hz / 2);
683 	timeout -= (hz / 2);
684     }
685     return error;
686 }
687 
688 static void
689 ast_describe(device_t dev)
690 {
691     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
692     struct ata_device *atadev = device_get_softc(dev);
693     struct ast_softc *stp = device_get_ivars(dev);
694 
695     if (bootverbose) {
696 	device_printf(dev, "<%.40s/%.8s> tape drive at ata%d as %s\n",
697 		      atadev->param.model, atadev->param.revision,
698 		      device_get_unit(ch->dev),
699 		      (atadev->unit == ATA_MASTER) ? "master" : "slave");
700 	device_printf(dev, "%dKB/s, ", stp->cap.max_speed);
701 	kprintf("transfer limit %d blk%s, ",
702 	       stp->cap.ctl, (stp->cap.ctl > 1) ? "s" : "");
703 	kprintf("%dKB buffer, ", (stp->cap.buffer_size * DEV_BSIZE) / 1024);
704 	kprintf("%s\n", ata_mode2str(atadev->mode));
705 	device_printf(dev, "Medium: ");
706 	switch (stp->cap.medium_type) {
707 	    case 0x00:
708 		kprintf("none"); break;
709 	    case 0x17:
710 		kprintf("Travan 1 (400 Mbyte)"); break;
711 	    case 0xb6:
712 		kprintf("Travan 4 (4 Gbyte)"); break;
713 	    case 0xda:
714 		kprintf("OnStream ADR (15Gyte)"); break;
715 	    default:
716 		kprintf("unknown (0x%x)", stp->cap.medium_type);
717 	}
718 	if (stp->cap.readonly) kprintf(", readonly");
719 	if (stp->cap.reverse) kprintf(", reverse");
720 	if (stp->cap.eformat) kprintf(", eformat");
721 	if (stp->cap.qfa) kprintf(", qfa");
722 	if (stp->cap.lock) kprintf(", lock");
723 	if (stp->cap.locked) kprintf(", locked");
724 	if (stp->cap.prevent) kprintf(", prevent");
725 	if (stp->cap.eject) kprintf(", eject");
726 	if (stp->cap.disconnect) kprintf(", disconnect");
727 	if (stp->cap.ecc) kprintf(", ecc");
728 	if (stp->cap.compress) kprintf(", compress");
729 	if (stp->cap.blk512) kprintf(", 512b");
730 	if (stp->cap.blk1024) kprintf(", 1024b");
731 	if (stp->cap.blk32k) kprintf(", 32kb");
732 	kprintf("\n");
733     }
734     else {
735 	device_printf(dev, "TAPE <%.40s/%.8s> at ata%d-%s %s\n",
736 		      atadev->param.model, atadev->param.revision,
737 		      device_get_unit(ch->dev),
738 		      (atadev->unit == ATA_MASTER) ? "master" : "slave",
739 		      ata_mode2str(atadev->mode));
740     }
741 }
742 
743 static device_method_t ast_methods[] = {
744     /* device interface */
745     DEVMETHOD(device_probe,     ast_probe),
746     DEVMETHOD(device_attach,    ast_attach),
747     DEVMETHOD(device_detach,    ast_detach),
748     DEVMETHOD(device_shutdown,  ast_shutdown),
749 
750     /* ATA methods */
751     DEVMETHOD(ata_reinit,       ast_reinit),
752 
753     { 0, 0 }
754 };
755 
756 static driver_t ast_driver = {
757     "ast",
758     ast_methods,
759     0,
760 };
761 
762 static devclass_t ast_devclass;
763 
764 DRIVER_MODULE(ast, ata, ast_driver, ast_devclass, NULL, NULL);
765 MODULE_VERSION(ast, 1);
766 MODULE_DEPEND(ast, ata, 1, 1, 1);
767