2 * Copyright (c) 1998 - 2006 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.
26 * $FreeBSD: src/sys/dev/ata/ata-disk.c,v 1.199 2006/09/14 19:12:29 sos Exp $
27 * $DragonFly: src/sys/dev/disk/nata/ata-disk.c,v 1.9 2008/08/29 20:08:38 dillon Exp $
32 #include <sys/param.h>
36 #include <sys/device.h>
37 #include <sys/devicestat.h>
39 #include <sys/libkern.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
43 #include <sys/systm.h>
47 #include <machine/md_var.h>
53 /* device structure */
54 static d_open_t ad_open;
55 static d_close_t ad_close;
56 static d_ioctl_t ad_ioctl;
57 static d_strategy_t ad_strategy;
58 static d_dump_t ad_dump;
59 static struct dev_ops ad_ops = {
60 { "ad", 116, D_DISK },
66 .d_strategy = ad_strategy,
71 static void ad_init(device_t);
72 static void ad_done(struct ata_request *);
73 static void ad_describe(device_t dev);
74 static int ad_version(u_int16_t);
77 static MALLOC_DEFINE(M_AD, "ad_driver", "ATA disk driver");
80 ad_probe(device_t dev)
82 struct ata_device *atadev = device_get_softc(dev);
84 if (!(atadev->param.config & ATA_PROTO_ATAPI) ||
85 (atadev->param.config == ATA_CFA_MAGIC1) ||
86 (atadev->param.config == ATA_CFA_MAGIC2) ||
87 (atadev->param.config == ATA_CFA_MAGIC3))
94 ad_attach(device_t dev)
96 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
97 struct ata_device *atadev = device_get_softc(dev);
98 struct disk_info info;
104 /* check that we have a virgin disk to attach */
105 if (device_get_ivars(dev))
108 adp = kmalloc(sizeof(struct ad_softc), M_AD, M_INTWAIT | M_ZERO);
109 device_set_ivars(dev, adp);
111 if ((atadev->param.atavalid & ATA_FLAG_54_58) &&
112 atadev->param.current_heads && atadev->param.current_sectors) {
113 adp->heads = atadev->param.current_heads;
114 adp->sectors = atadev->param.current_sectors;
115 adp->total_secs = (u_int32_t)atadev->param.current_size_1 |
116 ((u_int32_t)atadev->param.current_size_2 << 16);
119 adp->heads = atadev->param.heads;
120 adp->sectors = atadev->param.sectors;
121 adp->total_secs = atadev->param.cylinders * adp->heads * adp->sectors;
123 lbasize = (u_int32_t)atadev->param.lba_size_1 |
124 ((u_int32_t)atadev->param.lba_size_2 << 16);
126 /* does this device need oldstyle CHS addressing */
127 if (!ad_version(atadev->param.version_major) || !lbasize)
128 atadev->flags |= ATA_D_USE_CHS;
130 /* use the 28bit LBA size if valid or bigger than the CHS mapping */
131 if (atadev->param.cylinders == 16383 || adp->total_secs < lbasize)
132 adp->total_secs = lbasize;
134 /* use the 48bit LBA size if valid */
135 lbasize48 = ((u_int64_t)atadev->param.lba_size48_1) |
136 ((u_int64_t)atadev->param.lba_size48_2 << 16) |
137 ((u_int64_t)atadev->param.lba_size48_3 << 32) |
138 ((u_int64_t)atadev->param.lba_size48_4 << 48);
139 if ((atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) &&
140 lbasize48 > ATA_MAX_28BIT_LBA)
141 adp->total_secs = lbasize48;
143 /* init device parameters */
146 /* create the disk device */
147 /* XXX TGEN Maybe use DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT,
148 DEVSTAT_PRIORITY_MAX. */
149 devstat_add_entry(&adp->stats, "ad", device_get_unit(dev), DEV_BSIZE,
150 DEVSTAT_NO_ORDERED_TAGS,
151 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
152 DEVSTAT_PRIORITY_DISK);
153 cdev = disk_create(device_get_unit(dev), &adp->disk, &ad_ops);
156 cdev->si_iosize_max = ch->dma->max_iosize;
158 cdev->si_iosize_max = DFLTPHYS;
161 bzero(&info, sizeof(info));
162 info.d_media_blksize = DEV_BSIZE; /* mandatory */
163 info.d_media_blocks = adp->total_secs;
165 info.d_secpertrack = adp->sectors; /* optional */
166 info.d_nheads = adp->heads;
167 info.d_ncylinders = adp->total_secs/(adp->heads*adp->sectors);
168 info.d_secpercyl = adp->sectors * adp->heads;
169 info.d_serialno = atadev->param.serial;
171 device_add_child(dev, "subdisk", device_get_unit(dev));
172 bus_generic_attach(dev);
174 /* announce we are here */
177 disk_setdiskinfo(&adp->disk, &info);
183 ad_detach(device_t dev)
185 struct ad_softc *adp = device_get_ivars(dev);
189 /* check that we have a valid disk to detach */
193 #if 0 /* XXX TGEN Probably useless, we fail the queue below. */
194 /* check that the disk is closed */
195 if (adp->ad_flags & AD_DISK_OPEN)
199 /* detach & delete all children */
200 if (!device_get_children(dev, &children, &nchildren)) {
201 for (i = 0; i < nchildren; i++)
203 device_delete_child(dev, children[i]);
204 kfree(children, M_TEMP);
207 /* detroy disk from the system so we dont get any further requests */
208 disk_invalidate(&adp->disk);
209 disk_destroy(&adp->disk);
211 /* fail requests on the queue and any thats "in flight" for this device */
212 ata_fail_requests(dev);
214 /* dont leave anything behind */
215 /* disk_destroy() already took care of the dev_ops */
216 devstat_remove_entry(&adp->stats);
217 device_set_ivars(dev, NULL);
223 ad_shutdown(device_t dev)
225 struct ata_device *atadev = device_get_softc(dev);
227 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
228 ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
232 ad_reinit(device_t dev)
234 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
235 struct ata_device *atadev = device_get_softc(dev);
237 /* if detach pending, return error */
238 if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATA_MASTER)) ||
239 ((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATA_SLAVE))) {
247 ad_open(struct dev_open_args *ap)
249 device_t dev = ap->a_head.a_dev->si_drv1;
250 struct ad_softc *adp = device_get_ivars(dev);
252 if (!adp || adp->cdev == NULL)
254 if(!device_is_attached(dev))
257 #if 0 /* XXX TGEN Probably useless, queue will be failed on detach. */
258 adp->ad_flags &= AD_DISK_OPEN;
264 ad_close(struct dev_close_args *ap)
266 #if 0 /* XXX TGEN Probably useless, queue will be failed on detach. */
267 device_t dev = ap->a_head.a_dev->si_drv1;
268 struct ad_softc *adp = device_get_ivars(dev);
269 adp->ad_flags |= AD_DISK_OPEN;
275 ad_ioctl(struct dev_ioctl_args *ap)
277 return ata_device_ioctl(ap->a_head.a_dev->si_drv1, ap->a_cmd, ap->a_data);
281 ad_strategy(struct dev_strategy_args *ap)
283 device_t dev = ap->a_head.a_dev->si_drv1;
284 struct bio *bp = ap->a_bio;
285 struct buf *bbp = bp->bio_buf;
286 struct ata_device *atadev = device_get_softc(dev);
287 struct ata_request *request;
288 struct ad_softc *adp = device_get_ivars(dev);
290 if (!(request = ata_alloc_request())) {
291 device_printf(dev, "FAILURE - out of memory in strategy\n");
292 bbp->b_flags |= B_ERROR;
293 bbp->b_error = ENOMEM;
301 request->callback = ad_done;
302 request->timeout = ATA_DEFAULT_TIMEOUT;
303 request->retries = 2;
304 request->data = bbp->b_data;
305 request->bytecount = bbp->b_bcount;
306 /* lba is block granularity, convert byte granularity bio_offset */
307 request->u.ata.lba = (u_int64_t)(bp->bio_offset >> DEV_BSHIFT);
308 request->u.ata.count = request->bytecount / DEV_BSIZE;
309 request->transfersize = min(bbp->b_bcount, atadev->max_iosize);
311 switch (bbp->b_cmd) {
313 request->flags = ATA_R_READ;
314 if (atadev->mode >= ATA_DMA) {
315 request->u.ata.command = ATA_READ_DMA;
316 request->flags |= ATA_R_DMA;
318 else if (request->transfersize > DEV_BSIZE)
319 request->u.ata.command = ATA_READ_MUL;
321 request->u.ata.command = ATA_READ;
324 request->flags = ATA_R_WRITE;
325 if (atadev->mode >= ATA_DMA) {
326 request->u.ata.command = ATA_WRITE_DMA;
327 request->flags |= ATA_R_DMA;
329 else if (request->transfersize > DEV_BSIZE)
330 request->u.ata.command = ATA_WRITE_MUL;
332 request->u.ata.command = ATA_WRITE;
335 request->u.ata.lba = 0;
336 request->u.ata.count = 0;
337 request->u.ata.feature = 0;
338 request->bytecount = 0;
339 request->transfersize = 0;
340 request->flags = ATA_R_CONTROL;
341 request->u.ata.command = ATA_FLUSHCACHE;
344 device_printf(dev, "FAILURE - unknown BUF operation\n");
345 ata_free_request(request);
346 bbp->b_flags |= B_ERROR;
351 request->flags |= ATA_R_ORDERED;
352 devstat_start_transaction(&adp->stats);
353 ata_queue_request(request);
358 ad_done(struct ata_request *request)
360 struct ad_softc *adp = device_get_ivars(request->dev);
361 struct bio *bp = request->bio;
362 struct buf *bbp = bp->bio_buf;
364 /* finish up transfer */
365 if ((bbp->b_error = request->result))
366 bbp->b_flags |= B_ERROR;
367 bbp->b_resid = bbp->b_bcount - request->donecount;
368 devstat_end_transaction_buf(&adp->stats, bbp);
370 ata_free_request(request);
374 ad_dump(struct dev_dump_args *ap)
376 device_t dev = ap->a_head.a_dev->si_drv1;
377 struct ata_device *atadev = device_get_softc(dev);
378 struct ata_request request;
380 ata_drop_requests(dev);
382 * 0 length means flush buffers and return
384 if (ap->a_length == 0) {
385 /* flush buffers to media */
386 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
387 return ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
392 bzero(&request, sizeof(struct ata_request));
395 request.data = ap->a_virtual;
396 request.bytecount = ap->a_length;
397 request.transfersize = min(request.bytecount, atadev->max_iosize);
398 request.flags = ATA_R_WRITE;
400 if (atadev->mode >= ATA_DMA) {
401 request.u.ata.command = ATA_WRITE_DMA;
402 request.flags |= ATA_DMA;
403 } else if (request.transfersize > DEV_BSIZE)
404 request.u.ata.command = ATA_WRITE_MUL;
406 request.u.ata.command = ATA_WRITE;
407 request.u.ata.lba = ap->a_offset / DEV_BSIZE;
408 request.u.ata.count = request.bytecount / DEV_BSIZE;
410 request.timeout = ATA_DEFAULT_TIMEOUT;
413 ata_queue_request(&request);
414 return request.result;
418 ad_init(device_t dev)
420 struct ata_device *atadev = device_get_softc(dev);
422 ATA_SETMODE(device_get_parent(dev), dev);
424 /* enable readahead caching */
425 if (atadev->param.support.command1 & ATA_SUPPORT_LOOKAHEAD)
426 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_RCACHE, 0, 0);
428 /* enable write caching if supported and configured */
429 if (atadev->param.support.command1 & ATA_SUPPORT_WRITECACHE) {
431 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_WCACHE, 0, 0);
433 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_DIS_WCACHE, 0, 0);
436 /* use multiple sectors/interrupt if device supports it */
437 if (ad_version(atadev->param.version_major)) {
438 int secsperint = max(1, min(atadev->param.sectors_intr & 0xff, 16));
440 if (!ata_controlcmd(dev, ATA_SET_MULTI, 0, 0, secsperint))
441 atadev->max_iosize = secsperint * DEV_BSIZE;
444 atadev->max_iosize = DEV_BSIZE;
448 ad_describe(device_t dev)
450 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
451 struct ata_device *atadev = device_get_softc(dev);
452 struct ad_softc *adp = device_get_ivars(dev);
453 u_int8_t *marker, vendor[64], product[64];
455 /* try to seperate the ATA model string into vendor and model parts */
456 if ((marker = index(atadev->param.model, ' ')) ||
457 (marker = index(atadev->param.model, '-'))) {
458 int len = (marker - atadev->param.model);
460 strncpy(vendor, atadev->param.model, len);
463 strncpy(product, atadev->param.model + len, 40 - len);
464 vendor[40 - len] = 0;
467 if (!strncmp(atadev->param.model, "ST", 2))
468 strcpy(vendor, "Seagate ");
469 else if (!strncmp(atadev->param.model, "HDS", 3))
470 strcpy(vendor, "Hitachi ");
473 strncpy(product, atadev->param.model, 40);
476 device_printf(dev, "%lluMB <%s%s %.8s> at ata%d-%s %s%s\n",
477 (unsigned long long)(adp->total_secs / (1048576 / DEV_BSIZE)),
478 vendor, product, atadev->param.revision,
479 device_get_unit(ch->dev),
480 (atadev->unit == ATA_MASTER) ? "master" : "slave",
481 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
482 ata_mode2str(atadev->mode));
484 device_printf(dev, "%llu sectors [%lluC/%dH/%dS] "
485 "%d sectors/interrupt %d depth queue\n",
486 (unsigned long long)adp->total_secs,(unsigned long long)(
487 adp->total_secs / (adp->heads * adp->sectors)),
488 adp->heads, adp->sectors, atadev->max_iosize / DEV_BSIZE,
494 ad_version(u_int16_t version)
498 if (version == 0xffff)
500 for (bit = 15; bit >= 0; bit--)
501 if (version & (1<<bit))
506 static device_method_t ad_methods[] = {
507 /* device interface */
508 DEVMETHOD(device_probe, ad_probe),
509 DEVMETHOD(device_attach, ad_attach),
510 DEVMETHOD(device_detach, ad_detach),
511 DEVMETHOD(device_shutdown, ad_shutdown),
514 DEVMETHOD(ata_reinit, ad_reinit),
519 static driver_t ad_driver = {
525 devclass_t ad_devclass;
527 DRIVER_MODULE(ad, ata, ad_driver, ad_devclass, NULL, NULL);
528 MODULE_VERSION(ad, 1);
529 MODULE_DEPEND(ad, ata, 1, 1, 1);