2 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/malloc.h>
43 #include <sys/taskqueue.h>
45 #include <machine/md_var.h>
46 #include <machine/bus.h>
48 #include <geom/geom_disk.h>
49 #include <dev/ata/ata-all.h>
50 #include <dev/ata/ata-pci.h>
51 #include <dev/ata/ata-disk.h>
52 #include <dev/ata/ata-raid.h>
56 static void ad_init(device_t dev);
57 static void ad_get_geometry(device_t dev);
58 static void ad_set_geometry(device_t dev);
59 static void ad_done(struct ata_request *request);
60 static void ad_describe(device_t dev);
61 static int ad_version(u_int16_t version);
62 static disk_strategy_t ad_strategy;
63 static disk_ioctl_t ad_ioctl;
64 static dumper_t ad_dump;
67 * Most platforms map firmware geom to actual, but some don't. If
68 * not overridden, default to nothing.
70 #ifndef ata_disk_firmware_geom_adjust
71 #define ata_disk_firmware_geom_adjust(disk)
75 static MALLOC_DEFINE(M_AD, "ad_driver", "ATA disk driver");
78 ad_probe(device_t dev)
80 struct ata_device *atadev = device_get_softc(dev);
82 if (!(atadev->param.config & ATA_PROTO_ATAPI) ||
83 (atadev->param.config == ATA_CFA_MAGIC1) ||
84 (atadev->param.config == ATA_CFA_MAGIC2) ||
85 (atadev->param.config == ATA_CFA_MAGIC3))
92 ad_attach(device_t dev)
94 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
95 struct ata_device *atadev = device_get_softc(dev);
98 /* check that we have a virgin disk to attach */
99 if (device_get_ivars(dev))
102 if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_NOWAIT | M_ZERO))) {
103 device_printf(dev, "out of memory\n");
106 device_set_ivars(dev, adp);
108 /* get device geometry into internal structs */
109 ad_get_geometry(dev);
111 /* set the max size if configured */
113 ad_set_geometry(dev);
115 /* init device parameters */
118 /* announce we are here */
121 /* create the disk device */
122 adp->disk = disk_alloc();
123 adp->disk->d_strategy = ad_strategy;
124 adp->disk->d_ioctl = ad_ioctl;
125 adp->disk->d_dump = ad_dump;
126 adp->disk->d_name = "ad";
127 adp->disk->d_drv1 = dev;
128 adp->disk->d_maxsize = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
129 if (atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48)
130 adp->disk->d_maxsize = min(adp->disk->d_maxsize, 65536 * DEV_BSIZE);
131 else /* 28bit ATA command limit */
132 adp->disk->d_maxsize = min(adp->disk->d_maxsize, 256 * DEV_BSIZE);
133 adp->disk->d_sectorsize = DEV_BSIZE;
134 adp->disk->d_mediasize = DEV_BSIZE * (off_t)adp->total_secs;
135 adp->disk->d_fwsectors = adp->sectors;
136 adp->disk->d_fwheads = adp->heads;
137 adp->disk->d_unit = device_get_unit(dev);
138 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
139 adp->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
140 if ((atadev->param.support.command2 & ATA_SUPPORT_CFA) ||
141 atadev->param.config == ATA_PROTO_CFA)
142 adp->disk->d_flags |= DISKFLAG_CANDELETE;
143 strlcpy(adp->disk->d_ident, atadev->param.serial,
144 sizeof(adp->disk->d_ident));
145 ata_disk_firmware_geom_adjust(adp->disk);
146 disk_create(adp->disk, DISK_VERSION);
147 device_add_child(dev, "subdisk", device_get_unit(dev));
148 bus_generic_attach(dev);
150 callout_init(&atadev->spindown_timer, 1);
155 ad_detach(device_t dev)
157 struct ad_softc *adp = device_get_ivars(dev);
158 struct ata_device *atadev = device_get_softc(dev);
162 /* check that we have a valid disk to detach */
163 if (!device_get_ivars(dev))
166 /* destroy the power timeout */
167 callout_drain(&atadev->spindown_timer);
169 /* detach & delete all children */
170 if (!device_get_children(dev, &children, &nchildren)) {
171 for (i = 0; i < nchildren; i++)
173 device_delete_child(dev, children[i]);
174 free(children, M_TEMP);
177 /* detroy disk from the system so we dont get any further requests */
178 disk_destroy(adp->disk);
180 /* fail requests on the queue and any thats "in flight" for this device */
181 ata_fail_requests(dev);
183 /* dont leave anything behind */
184 device_set_ivars(dev, NULL);
190 ad_shutdown(device_t dev)
192 struct ata_device *atadev = device_get_softc(dev);
194 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
195 ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
200 ad_reinit(device_t dev)
202 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
203 struct ata_device *atadev = device_get_softc(dev);
205 /* if detach pending, return error */
206 if (!(ch->devices & (ATA_ATA_MASTER << atadev->unit)))
214 ad_power_callback(struct ata_request *request)
216 device_printf(request->dev, "drive spun down.\n");
217 ata_free_request(request);
221 ad_spindown(void *priv)
224 struct ata_device *atadev = device_get_softc(dev);
225 struct ata_request *request;
227 if (!atadev->spindown)
229 device_printf(dev, "Idle, spin down\n");
230 atadev->spindown_state = 1;
231 if (!(request = ata_alloc_request())) {
232 device_printf(dev, "FAILURE - out of memory in ad_spindown\n");
236 request->flags = ATA_R_CONTROL;
237 request->timeout = ATA_REQUEST_TIMEOUT;
238 request->retries = 1;
239 request->callback = ad_power_callback;
240 request->u.ata.command = ATA_STANDBY_IMMEDIATE;
241 ata_queue_request(request);
246 ad_strategy(struct bio *bp)
248 device_t dev = bp->bio_disk->d_drv1;
249 struct ata_device *atadev = device_get_softc(dev);
250 struct ata_request *request;
252 if (atadev->spindown)
253 callout_reset(&atadev->spindown_timer, hz * atadev->spindown,
256 if (!(request = ata_alloc_request())) {
257 device_printf(dev, "FAILURE - out of memory in start\n");
258 biofinish(bp, NULL, ENOMEM);
265 request->callback = ad_done;
266 if (atadev->spindown_state) {
267 device_printf(dev, "request while spun down, starting.\n");
268 atadev->spindown_state = 0;
269 request->timeout = MAX(ATA_REQUEST_TIMEOUT, 31);
272 request->timeout = ATA_REQUEST_TIMEOUT;
274 request->retries = 2;
275 request->data = bp->bio_data;
276 request->bytecount = bp->bio_bcount;
277 request->u.ata.lba = bp->bio_pblkno;
278 request->u.ata.count = request->bytecount / DEV_BSIZE;
279 request->transfersize = min(bp->bio_bcount, atadev->max_iosize);
281 switch (bp->bio_cmd) {
283 request->flags = ATA_R_READ;
284 if (atadev->mode >= ATA_DMA) {
285 request->u.ata.command = ATA_READ_DMA;
286 request->flags |= ATA_R_DMA;
288 else if (request->transfersize > DEV_BSIZE)
289 request->u.ata.command = ATA_READ_MUL;
291 request->u.ata.command = ATA_READ;
294 request->flags = ATA_R_WRITE;
295 if (atadev->mode >= ATA_DMA) {
296 request->u.ata.command = ATA_WRITE_DMA;
297 request->flags |= ATA_R_DMA;
299 else if (request->transfersize > DEV_BSIZE)
300 request->u.ata.command = ATA_WRITE_MUL;
302 request->u.ata.command = ATA_WRITE;
305 request->flags = ATA_R_CONTROL;
306 request->u.ata.command = ATA_CFA_ERASE;
307 request->transfersize = 0;
308 request->donecount = bp->bio_bcount;
311 request->u.ata.lba = 0;
312 request->u.ata.count = 0;
313 request->u.ata.feature = 0;
314 request->bytecount = 0;
315 request->transfersize = 0;
316 request->flags = ATA_R_CONTROL;
317 request->u.ata.command = ATA_FLUSHCACHE;
320 device_printf(dev, "FAILURE - unknown BIO operation\n");
321 ata_free_request(request);
322 biofinish(bp, NULL, EIO);
325 request->flags |= ATA_R_ORDERED;
326 ata_queue_request(request);
330 ad_done(struct ata_request *request)
332 struct bio *bp = request->bio;
334 /* finish up transfer */
335 if ((bp->bio_error = request->result))
336 bp->bio_flags |= BIO_ERROR;
337 bp->bio_resid = bp->bio_bcount - request->donecount;
339 ata_free_request(request);
343 ad_ioctl(struct disk *disk, u_long cmd, void *data, int flag, struct thread *td)
345 return ata_device_ioctl(disk->d_drv1, cmd, data);
349 ad_dump(void *arg, void *virtual, vm_offset_t physical,
350 off_t offset, size_t length)
352 struct disk *dp = arg;
353 device_t dev = dp->d_drv1;
356 /* XXX: Drop pre-dump request queue. Long request queue processing
357 * causes stack overflow in ATA working in dumping (interruptless) mode.
358 * Conter-XXX: To make dump coherent we should avoid doing anything
359 * else while dumping.
361 ata_drop_requests(dev);
363 /* length zero is special and really means flush buffers to media */
365 struct ata_device *atadev = device_get_softc(dev);
368 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
369 error = ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
373 bzero(&bp, sizeof(struct bio));
375 bp.bio_pblkno = offset / DEV_BSIZE;
376 bp.bio_bcount = length;
377 bp.bio_data = virtual;
378 bp.bio_cmd = BIO_WRITE;
384 ad_init(device_t dev)
386 struct ata_device *atadev = device_get_softc(dev);
390 /* enable readahead caching */
391 if (atadev->param.support.command1 & ATA_SUPPORT_LOOKAHEAD)
392 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_RCACHE, 0, 0);
394 /* enable write caching if supported and configured */
395 if (atadev->param.support.command1 & ATA_SUPPORT_WRITECACHE) {
397 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_WCACHE, 0, 0);
399 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_DIS_WCACHE, 0, 0);
402 /* use multiple sectors/interrupt if device supports it */
403 if (ad_version(atadev->param.version_major)) {
404 int secsperint = max(1, min(atadev->param.sectors_intr & 0xff, 16));
406 if (!ata_controlcmd(dev, ATA_SET_MULTI, 0, 0, secsperint))
407 atadev->max_iosize = secsperint * DEV_BSIZE;
410 atadev->max_iosize = DEV_BSIZE;
414 ad_get_geometry(device_t dev)
416 struct ata_device *atadev = device_get_softc(dev);
417 struct ad_softc *adp = device_get_ivars(dev);
421 if ((atadev->param.atavalid & ATA_FLAG_54_58) &&
422 atadev->param.current_heads && atadev->param.current_sectors) {
423 adp->heads = atadev->param.current_heads;
424 adp->sectors = atadev->param.current_sectors;
425 adp->total_secs = (u_int32_t)atadev->param.current_size_1 |
426 ((u_int32_t)atadev->param.current_size_2 << 16);
429 adp->heads = atadev->param.heads;
430 adp->sectors = atadev->param.sectors;
431 adp->total_secs = atadev->param.cylinders * adp->heads * adp->sectors;
433 lbasize = (u_int32_t)atadev->param.lba_size_1 |
434 ((u_int32_t)atadev->param.lba_size_2 << 16);
436 /* does this device need oldstyle CHS addressing */
437 if (!ad_version(atadev->param.version_major) || !lbasize)
438 atadev->flags |= ATA_D_USE_CHS;
440 /* use the 28bit LBA size if valid or bigger than the CHS mapping */
441 if (atadev->param.cylinders == 16383 || adp->total_secs < lbasize)
442 adp->total_secs = lbasize;
444 /* use the 48bit LBA size if valid */
445 lbasize48 = ((u_int64_t)atadev->param.lba_size48_1) |
446 ((u_int64_t)atadev->param.lba_size48_2 << 16) |
447 ((u_int64_t)atadev->param.lba_size48_3 << 32) |
448 ((u_int64_t)atadev->param.lba_size48_4 << 48);
449 if ((atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) &&
450 lbasize48 > ATA_MAX_28BIT_LBA)
451 adp->total_secs = lbasize48;
455 ad_set_geometry(device_t dev)
457 struct ad_softc *adp = device_get_ivars(dev);
458 struct ata_request *request;
461 device_printf(dev, "ORG %ju sectors [%juC/%dH/%dS]\n", adp->total_secs,
462 adp->total_secs / (adp->heads * adp->sectors),
463 adp->heads, adp->sectors);
465 if (!(request = ata_alloc_request()))
468 /* get the max native size the device supports */
470 request->u.ata.command = ATA_READ_NATIVE_MAX_ADDRESS;
471 request->u.ata.lba = 0;
472 request->u.ata.count = 0;
473 request->u.ata.feature = 0;
474 request->flags = ATA_R_CONTROL | ATA_R_QUIET;
475 request->timeout = ATA_REQUEST_TIMEOUT;
476 request->retries = 0;
477 ata_queue_request(request);
478 if (request->status & ATA_S_ERROR)
482 device_printf(dev, "MAX %ju sectors\n", request->u.ata.lba + 1);
484 /* if original size equals max size nothing more todo */
485 if (adp->total_secs >= request->u.ata.lba)
488 /* set the max native size to its max */
490 request->u.ata.command = ATA_SET_MAX_ADDRESS;
491 request->u.ata.count = 1;
492 request->u.ata.feature = 0;
493 request->flags = ATA_R_CONTROL;
494 request->timeout = ATA_REQUEST_TIMEOUT;
495 request->retries = 0;
496 ata_queue_request(request);
497 if (request->status & ATA_S_ERROR)
500 /* refresh geometry from drive */
501 ata_getparam(device_get_softc(dev), 0);
502 ad_get_geometry(dev);
504 device_printf(dev, "NEW %ju sectors [%juC/%dH/%dS]\n", adp->total_secs,
505 adp->total_secs / (adp->heads * adp->sectors),
506 adp->heads, adp->sectors);
508 ata_free_request(request);
512 ad_describe(device_t dev)
514 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
515 struct ata_device *atadev = device_get_softc(dev);
516 struct ad_softc *adp = device_get_ivars(dev);
517 u_int8_t *marker, vendor[64], product[64];
519 /* try to seperate the ATA model string into vendor and model parts */
520 if ((marker = index(atadev->param.model, ' ')) ||
521 (marker = index(atadev->param.model, '-'))) {
522 int len = (marker - atadev->param.model);
524 strncpy(vendor, atadev->param.model, len);
527 strncpy(product, atadev->param.model + len, 40 - len);
528 vendor[40 - len] = 0;
531 if (!strncmp(atadev->param.model, "ST", 2))
532 strcpy(vendor, "Seagate ");
533 else if (!strncmp(atadev->param.model, "HDS", 3))
534 strcpy(vendor, "Hitachi ");
537 strncpy(product, atadev->param.model, 40);
540 device_printf(dev, "%juMB <%s%s %.8s> at ata%d-%s %s%s %s\n",
541 adp->total_secs / (1048576 / DEV_BSIZE),
542 vendor, product, atadev->param.revision,
543 device_get_unit(ch->dev), ata_unit2str(atadev),
544 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
545 ata_mode2str(atadev->mode),
546 ata_satarev2str(ATA_GETREV(device_get_parent(dev), atadev->unit)));
548 device_printf(dev, "%ju sectors [%juC/%dH/%dS] "
549 "%d sectors/interrupt %d depth queue\n", adp->total_secs,
550 adp->total_secs / (adp->heads * adp->sectors),
551 adp->heads, adp->sectors, atadev->max_iosize / DEV_BSIZE,
557 ad_version(u_int16_t version)
561 if (version == 0xffff)
563 for (bit = 15; bit >= 0; bit--)
564 if (version & (1<<bit))
569 static device_method_t ad_methods[] = {
570 /* device interface */
571 DEVMETHOD(device_probe, ad_probe),
572 DEVMETHOD(device_attach, ad_attach),
573 DEVMETHOD(device_detach, ad_detach),
574 DEVMETHOD(device_shutdown, ad_shutdown),
577 DEVMETHOD(ata_reinit, ad_reinit),
582 static driver_t ad_driver = {
588 devclass_t ad_devclass;
590 DRIVER_MODULE(ad, ata, ad_driver, ad_devclass, NULL, NULL);
591 MODULE_VERSION(ad, 1);
592 MODULE_DEPEND(ad, ata, 1, 1, 1);