2 * Copyright (c) 1998 - 2007 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>
42 #include <sys/sysctl.h>
44 #include <sys/taskqueue.h>
46 #include <machine/md_var.h>
47 #include <machine/bus.h>
49 #include <geom/geom_disk.h>
50 #include <dev/ata/ata-all.h>
51 #include <dev/ata/ata-pci.h>
52 #include <dev/ata/ata-disk.h>
53 #include <dev/ata/ata-raid.h>
57 static void ad_init(device_t);
58 static void ad_done(struct ata_request *);
59 static void ad_describe(device_t dev);
60 static int ad_version(u_int16_t);
61 static disk_strategy_t ad_strategy;
62 static disk_ioctl_t ad_ioctl;
63 static dumper_t ad_dump;
66 * Most platforms map firmware geom to actual, but some don't. If
67 * not overridden, default to nothing.
69 #ifndef ad_firmware_geom_adjust
70 #define ad_firmware_geom_adjust(dev, disk)
74 static MALLOC_DEFINE(M_AD, "ad_driver", "ATA disk driver");
77 ad_probe(device_t dev)
79 struct ata_device *atadev = device_get_softc(dev);
81 if (!(atadev->param.config & ATA_PROTO_ATAPI) ||
82 (atadev->param.config == ATA_CFA_MAGIC1) ||
83 (atadev->param.config == ATA_CFA_MAGIC2))
90 ad_attach(device_t dev)
92 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
93 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 if ((atadev->param.atavalid & ATA_FLAG_54_58) &&
109 atadev->param.current_heads && atadev->param.current_sectors) {
110 adp->heads = atadev->param.current_heads;
111 adp->sectors = atadev->param.current_sectors;
112 adp->total_secs = (u_int32_t)atadev->param.current_size_1 |
113 ((u_int32_t)atadev->param.current_size_2 << 16);
116 adp->heads = atadev->param.heads;
117 adp->sectors = atadev->param.sectors;
118 adp->total_secs = atadev->param.cylinders * adp->heads * adp->sectors;
120 lbasize = (u_int32_t)atadev->param.lba_size_1 |
121 ((u_int32_t)atadev->param.lba_size_2 << 16);
123 /* does this device need oldstyle CHS addressing */
124 if (!ad_version(atadev->param.version_major) || !lbasize)
125 atadev->flags |= ATA_D_USE_CHS;
127 /* use the 28bit LBA size if valid or bigger than the CHS mapping */
128 if (atadev->param.cylinders == 16383 || adp->total_secs < lbasize)
129 adp->total_secs = lbasize;
131 /* use the 48bit LBA size if valid */
132 lbasize48 = ((u_int64_t)atadev->param.lba_size48_1) |
133 ((u_int64_t)atadev->param.lba_size48_2 << 16) |
134 ((u_int64_t)atadev->param.lba_size48_3 << 32) |
135 ((u_int64_t)atadev->param.lba_size48_4 << 48);
136 if ((atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) &&
137 lbasize48 > ATA_MAX_28BIT_LBA)
138 adp->total_secs = lbasize48;
140 /* init device parameters */
143 /* announce we are here */
146 /* create the disk device */
147 adp->disk = disk_alloc();
148 adp->disk->d_strategy = ad_strategy;
149 adp->disk->d_ioctl = ad_ioctl;
150 adp->disk->d_dump = ad_dump;
151 adp->disk->d_name = "ad";
152 adp->disk->d_drv1 = dev;
154 adp->disk->d_maxsize = ch->dma->max_iosize;
156 adp->disk->d_maxsize = DFLTPHYS;
157 adp->disk->d_sectorsize = DEV_BSIZE;
158 adp->disk->d_mediasize = DEV_BSIZE * (off_t)adp->total_secs;
159 adp->disk->d_fwsectors = adp->sectors;
160 adp->disk->d_fwheads = adp->heads;
161 adp->disk->d_unit = device_get_unit(dev);
162 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
163 adp->disk->d_flags = DISKFLAG_CANFLUSHCACHE;
164 snprintf(adp->disk->d_ident, sizeof(adp->disk->d_ident), "ad:%s",
165 atadev->param.serial);
166 disk_create(adp->disk, DISK_VERSION);
167 device_add_child(dev, "subdisk", device_get_unit(dev));
168 ad_firmware_geom_adjust(dev, adp->disk);
169 bus_generic_attach(dev);
174 ad_detach(device_t dev)
176 struct ad_softc *adp = device_get_ivars(dev);
180 /* check that we have a valid disk to detach */
181 if (!device_get_ivars(dev))
184 /* detach & delete all children */
185 if (!device_get_children(dev, &children, &nchildren)) {
186 for (i = 0; i < nchildren; i++)
188 device_delete_child(dev, children[i]);
189 free(children, M_TEMP);
192 /* detroy disk from the system so we dont get any further requests */
193 disk_destroy(adp->disk);
195 /* fail requests on the queue and any thats "in flight" for this device */
196 ata_fail_requests(dev);
198 /* dont leave anything behind */
199 device_set_ivars(dev, NULL);
205 ad_shutdown(device_t dev)
207 struct ata_device *atadev = device_get_softc(dev);
209 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
210 ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
214 ad_reinit(device_t dev)
216 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
217 struct ata_device *atadev = device_get_softc(dev);
219 /* if detach pending, return error */
220 if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATA_MASTER)) ||
221 ((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATA_SLAVE))) {
229 ad_strategy(struct bio *bp)
231 device_t dev = bp->bio_disk->d_drv1;
232 struct ata_device *atadev = device_get_softc(dev);
233 struct ata_request *request;
235 if (!(request = ata_alloc_request())) {
236 device_printf(dev, "FAILURE - out of memory in start\n");
237 biofinish(bp, NULL, ENOMEM);
244 request->callback = ad_done;
245 request->timeout = 5;
246 request->retries = 2;
247 request->data = bp->bio_data;
248 request->bytecount = bp->bio_bcount;
249 request->u.ata.lba = bp->bio_pblkno;
250 request->u.ata.count = request->bytecount / DEV_BSIZE;
251 request->transfersize = min(bp->bio_bcount, atadev->max_iosize);
253 switch (bp->bio_cmd) {
255 request->flags = ATA_R_READ;
256 if (atadev->mode >= ATA_DMA) {
257 request->u.ata.command = ATA_READ_DMA;
258 request->flags |= ATA_R_DMA;
260 else if (request->transfersize > DEV_BSIZE)
261 request->u.ata.command = ATA_READ_MUL;
263 request->u.ata.command = ATA_READ;
266 request->flags = ATA_R_WRITE;
267 if (atadev->mode >= ATA_DMA) {
268 request->u.ata.command = ATA_WRITE_DMA;
269 request->flags |= ATA_R_DMA;
271 else if (request->transfersize > DEV_BSIZE)
272 request->u.ata.command = ATA_WRITE_MUL;
274 request->u.ata.command = ATA_WRITE;
277 request->u.ata.lba = 0;
278 request->u.ata.count = 0;
279 request->u.ata.feature = 0;
280 request->bytecount = 0;
281 request->transfersize = 0;
282 request->flags = ATA_R_CONTROL;
283 request->u.ata.command = ATA_FLUSHCACHE;
286 device_printf(dev, "FAILURE - unknown BIO operation\n");
287 ata_free_request(request);
288 biofinish(bp, NULL, EIO);
291 request->flags |= ATA_R_ORDERED;
292 ata_queue_request(request);
296 ad_done(struct ata_request *request)
298 struct bio *bp = request->bio;
300 /* finish up transfer */
301 if ((bp->bio_error = request->result))
302 bp->bio_flags |= BIO_ERROR;
303 bp->bio_resid = bp->bio_bcount - request->donecount;
305 ata_free_request(request);
309 ad_ioctl(struct disk *disk, u_long cmd, void *data, int flag, struct thread *td)
311 return ata_device_ioctl(disk->d_drv1, cmd, data);
315 ad_dump(void *arg, void *virtual, vm_offset_t physical,
316 off_t offset, size_t length)
318 struct disk *dp = arg;
321 /* length zero is special and really means flush buffers to media */
323 struct ata_device *atadev = device_get_softc(dp->d_drv1);
326 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
327 error = ata_controlcmd(dp->d_drv1, ATA_FLUSHCACHE, 0, 0, 0);
331 bzero(&bp, sizeof(struct bio));
333 bp.bio_pblkno = offset / DEV_BSIZE;
334 bp.bio_bcount = length;
335 bp.bio_data = virtual;
336 bp.bio_cmd = BIO_WRITE;
342 ad_init(device_t dev)
344 struct ata_device *atadev = device_get_softc(dev);
346 ATA_SETMODE(device_get_parent(dev), dev);
348 /* enable readahead caching */
349 if (atadev->param.support.command1 & ATA_SUPPORT_LOOKAHEAD)
350 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_RCACHE, 0, 0);
352 /* enable write caching if supported and configured */
353 if (atadev->param.support.command1 & ATA_SUPPORT_WRITECACHE) {
355 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_WCACHE, 0, 0);
357 ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_DIS_WCACHE, 0, 0);
360 /* use multiple sectors/interrupt if device supports it */
361 if (ad_version(atadev->param.version_major)) {
362 int secsperint = max(1, min(atadev->param.sectors_intr, 16));
364 if (!ata_controlcmd(dev, ATA_SET_MULTI, 0, 0, secsperint))
365 atadev->max_iosize = secsperint * DEV_BSIZE;
368 atadev->max_iosize = DEV_BSIZE;
372 ad_describe(device_t dev)
374 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
375 struct ata_device *atadev = device_get_softc(dev);
376 struct ad_softc *adp = device_get_ivars(dev);
377 u_int8_t *marker, vendor[64], product[64];
379 /* try to seperate the ATA model string into vendor and model parts */
380 if ((marker = index(atadev->param.model, ' ')) ||
381 (marker = index(atadev->param.model, '-'))) {
382 int len = (marker - atadev->param.model);
384 strncpy(vendor, atadev->param.model, len);
387 strncpy(product, atadev->param.model + len, 40 - len);
388 vendor[40 - len] = 0;
391 if (!strncmp(atadev->param.model, "ST", 2))
392 strcpy(vendor, "Seagate ");
395 strncpy(product, atadev->param.model, 40);
398 device_printf(dev, "%juMB <%s%s %.8s> at ata%d-%s %s%s\n",
399 adp->total_secs / (1048576 / DEV_BSIZE),
400 vendor, product, atadev->param.revision,
401 device_get_unit(ch->dev),
402 (atadev->unit == ATA_MASTER) ? "master" : "slave",
403 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
404 ata_mode2str(atadev->mode));
406 device_printf(dev, "%ju sectors [%juC/%dH/%dS] "
407 "%d sectors/interrupt %d depth queue\n", adp->total_secs,
408 adp->total_secs / (adp->heads * adp->sectors),
409 adp->heads, adp->sectors, atadev->max_iosize / DEV_BSIZE,
415 ad_version(u_int16_t version)
419 if (version == 0xffff)
421 for (bit = 15; bit >= 0; bit--)
422 if (version & (1<<bit))
427 static device_method_t ad_methods[] = {
428 /* device interface */
429 DEVMETHOD(device_probe, ad_probe),
430 DEVMETHOD(device_attach, ad_attach),
431 DEVMETHOD(device_detach, ad_detach),
432 DEVMETHOD(device_shutdown, ad_shutdown),
435 DEVMETHOD(ata_reinit, ad_reinit),
440 static driver_t ad_driver = {
446 devclass_t ad_devclass;
448 DRIVER_MODULE(ad, ata, ad_driver, ad_devclass, NULL, NULL);
449 MODULE_VERSION(ad, 1);
450 MODULE_DEPEND(ad, ata, 1, 1, 1);