mfi(4): Fix a bug in the disk initialization code.
[dragonfly.git] / sys / dev / raid / mfi / mfi_disk.c
CommitLineData
249d29c8
SW
1/*-
2 * Copyright (c) 2006 IronPort Systems
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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
17566092
SW
25 */
26/*-
27 * Redistribution and use in source and binary forms, with or without
28 * modification, are permitted provided that the following conditions
29 * are met:
30 *
31 * Copyright 1994-2009 The FreeBSD Project.
32 * All rights reserved.
33 *
34 * 1. Redistributions of source code must retain the above copyright
35 * notice, this list of conditions and the following disclaimer.
36 * 2. Redistributions in binary form must reproduce the above copyright
37 * notice, this list of conditions and the following disclaimer in the
38 * documentation and/or other materials provided with the distribution.
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
42 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT OR
44 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
45 * EXEMPLARY,OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
46 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
47 * PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY THEORY
48 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
49 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
50 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51 *
52 * The views and conclusions contained in the software and documentation
53 * are those of the authors and should not be interpreted as representing
54 * official policies,either expressed or implied, of the FreeBSD Project.
249d29c8
SW
55 *
56 * $FreeBSD: src/sys/dev/mfi/mfi_disk.c,v 1.8 2008/11/17 23:30:19 jhb Exp $
57 */
58
59#include "opt_mfi.h"
60
61#include <sys/param.h>
62#include <sys/systm.h>
63#include <sys/kernel.h>
64#include <sys/module.h>
65#include <sys/malloc.h>
66#include <sys/uio.h>
67
68#include <sys/buf2.h>
69#include <sys/bus.h>
70#include <sys/conf.h>
71#include <sys/disk.h>
72
73#include <vm/vm.h>
74#include <vm/pmap.h>
75
76#include <machine/md_var.h>
77#include <sys/rman.h>
78
79#include <dev/raid/mfi/mfireg.h>
80#include <dev/raid/mfi/mfi_ioctl.h>
81#include <dev/raid/mfi/mfivar.h>
82
83static int mfi_disk_probe(device_t dev);
84static int mfi_disk_attach(device_t dev);
85static int mfi_disk_detach(device_t dev);
86
87static d_open_t mfi_disk_open;
88static d_close_t mfi_disk_close;
89static d_strategy_t mfi_disk_strategy;
90static d_dump_t mfi_disk_dump;
91
92static struct dev_ops mfi_disk_ops = {
93 { "mfid", 0, D_DISK },
94 .d_open = mfi_disk_open,
95 .d_close = mfi_disk_close,
96 .d_strategy = mfi_disk_strategy,
97 .d_dump = mfi_disk_dump,
98};
99
100static devclass_t mfi_disk_devclass;
101
102static device_method_t mfi_disk_methods[] = {
103 DEVMETHOD(device_probe, mfi_disk_probe),
104 DEVMETHOD(device_attach, mfi_disk_attach),
105 DEVMETHOD(device_detach, mfi_disk_detach),
106 { 0, 0 }
107};
108
109static driver_t mfi_disk_driver = {
110 "mfid",
111 mfi_disk_methods,
112 sizeof(struct mfi_disk)
113};
114
aa2b9d05 115DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, NULL, NULL);
249d29c8
SW
116
117static int
118mfi_disk_probe(device_t dev)
119{
120
121 return (0);
122}
123
124static int
125mfi_disk_attach(device_t dev)
126{
127 struct mfi_disk *sc;
128 struct mfi_ld_info *ld_info;
129 struct disk_info info;
130 uint64_t sectors;
131 uint32_t secsize;
132 char *state;
133
134 sc = device_get_softc(dev);
135 ld_info = device_get_ivars(dev);
136
137 sc->ld_dev = dev;
138 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id;
139 sc->ld_unit = device_get_unit(dev);
140 sc->ld_info = ld_info;
141 sc->ld_controller = device_get_softc(device_get_parent(dev));
142 sc->ld_flags = 0;
143
144 sectors = ld_info->size;
145 secsize = MFI_SECTOR_LEN;
146 lockmgr(&sc->ld_controller->mfi_io_lock, LK_EXCLUSIVE);
147 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
148 lockmgr(&sc->ld_controller->mfi_io_lock, LK_RELEASE);
149
150 switch (ld_info->ld_config.params.state) {
151 case MFI_LD_STATE_OFFLINE:
152 state = "offline";
153 break;
154 case MFI_LD_STATE_PARTIALLY_DEGRADED:
155 state = "partially degraded";
156 break;
157 case MFI_LD_STATE_DEGRADED:
158 state = "degraded";
159 break;
160 case MFI_LD_STATE_OPTIMAL:
161 state = "optimal";
162 break;
163 default:
164 state = "unknown";
165 break;
166 }
167 device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n",
168 sectors / (1024 * 1024 / secsize), sectors,
169 ld_info->ld_config.properties.name,
170 state);
171
91c61028
SW
172 devstat_add_entry(&sc->ld_devstat, "mfid", device_get_unit(dev),
173 MFI_SECTOR_LEN, DEVSTAT_NO_ORDERED_TAGS,
174 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
175 DEVSTAT_PRIORITY_ARRAY);
176
9049decf
SW
177 sc->ld_dev_t = disk_create(sc->ld_unit, &sc->ld_disk, &mfi_disk_ops);
178 sc->ld_dev_t->si_drv1 = sc;
179 sc->ld_dev_t->si_iosize_max =
249d29c8
SW
180 min(sc->ld_controller->mfi_max_io * secsize,
181 (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE);
182
183 bzero(&info, sizeof(info));
184 info.d_media_blksize = secsize; /* mandatory */
185 info.d_media_blocks = sectors;
186
187 if (info.d_media_blocks >= (1 * 1024 * 1024)) {
188 info.d_nheads = 255;
189 info.d_secpertrack = 63;
190 } else {
191 info.d_nheads = 64;
192 info.d_secpertrack = 32;
193 }
194
195 disk_setdiskinfo(&sc->ld_disk, &info);
196
197 return (0);
198}
199
200static int
201mfi_disk_detach(device_t dev)
202{
203 struct mfi_disk *sc;
204
205 sc = device_get_softc(dev);
206
207 lockmgr(&sc->ld_controller->mfi_io_lock, LK_EXCLUSIVE);
17566092 208 if ((sc->ld_flags & MFI_DISK_FLAGS_OPEN) &&
249d29c8 209 (sc->ld_controller->mfi_keep_deleted_volumes ||
17566092 210 sc->ld_controller->mfi_detaching)) {
249d29c8
SW
211 lockmgr(&sc->ld_controller->mfi_io_lock, LK_RELEASE);
212 return (EBUSY);
213 }
214 lockmgr(&sc->ld_controller->mfi_io_lock, LK_RELEASE);
215
216 disk_destroy(&sc->ld_disk);
91c61028 217 devstat_remove_entry(&sc->ld_devstat);
249d29c8
SW
218 lockmgr(&sc->ld_controller->mfi_io_lock, LK_EXCLUSIVE);
219 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
220 lockmgr(&sc->ld_controller->mfi_io_lock, LK_RELEASE);
221 kfree(sc->ld_info, M_MFIBUF);
222 return (0);
223}
224
225static int
226mfi_disk_open(struct dev_open_args *ap)
227{
228 struct mfi_disk *sc = ap->a_head.a_dev->si_drv1;
229 int error;
230
231 lockmgr(&sc->ld_controller->mfi_io_lock, LK_EXCLUSIVE);
232 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED)
233 error = ENXIO;
234 else {
235 sc->ld_flags |= MFI_DISK_FLAGS_OPEN;
236 error = 0;
237 }
238 lockmgr(&sc->ld_controller->mfi_io_lock, LK_RELEASE);
239
240 return (error);
241}
242
243static int
244mfi_disk_close(struct dev_close_args *ap)
245{
246 struct mfi_disk *sc = ap->a_head.a_dev->si_drv1;
247
248 lockmgr(&sc->ld_controller->mfi_io_lock, LK_EXCLUSIVE);
249 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN;
250 lockmgr(&sc->ld_controller->mfi_io_lock, LK_RELEASE);
251
252 return (0);
253}
254
255int
256mfi_disk_disable(struct mfi_disk *sc)
257{
258
259 KKASSERT(lockstatus(&sc->ld_controller->mfi_io_lock, curthread) != 0);
260 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) {
261 if (sc->ld_controller->mfi_delete_busy_volumes)
262 return (0);
17566092 263 device_printf(sc->ld_dev, "Unable to delete busy ld device\n");
249d29c8
SW
264 return (EBUSY);
265 }
266 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED;
267 return (0);
268}
269
270void
271mfi_disk_enable(struct mfi_disk *sc)
272{
273
274 KKASSERT(lockstatus(&sc->ld_controller->mfi_io_lock, curthread) != 0);
275 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED;
276}
277
278static int
279mfi_disk_strategy(struct dev_strategy_args *ap)
280{
281 struct bio *bio = ap->a_bio;
282 struct buf *bp = bio->bio_buf;
283 struct mfi_disk *sc = ap->a_head.a_dev->si_drv1;
284 struct mfi_softc *controller;
285
286 if (sc == NULL) {
287 bp->b_error = EINVAL;
288 bp->b_flags |= B_ERROR;
289 bp->b_resid = bp->b_bcount;
290 biodone(bio);
291 return (0);
292 }
293
294 /*
295 * XXX swildner
296 *
297 * If it's a null transfer, do nothing. FreeBSD's original driver
298 * doesn't have this, but that caused hard error messages (even
299 * though everything else continued to work fine). Interestingly,
300 * only when HAMMER was used.
301 *
302 * Several others of our RAID drivers have this check, such as
303 * aac(4) and ida(4), so we insert it here, too.
304 *
305 * The cause of null transfers is yet unknown.
306 */
307 if (bp->b_bcount == 0) {
308 bp->b_resid = bp->b_bcount;
309 biodone(bio);
310 return (0);
311 }
312
313 controller = sc->ld_controller;
314 bio->bio_driver_info = sc;
315 lockmgr(&controller->mfi_io_lock, LK_EXCLUSIVE);
316 mfi_enqueue_bio(controller, bio);
91c61028 317 devstat_start_transaction(&sc->ld_devstat);
249d29c8
SW
318 mfi_startio(controller);
319 lockmgr(&controller->mfi_io_lock, LK_RELEASE);
320 return (0);
321}
322
323void
324mfi_disk_complete(struct bio *bio)
325{
326 struct mfi_disk *sc = bio->bio_driver_info;
327 struct buf *bp = bio->bio_buf;
328
91c61028 329 devstat_end_transaction_buf(&sc->ld_devstat, bp);
249d29c8
SW
330 if (bp->b_flags & B_ERROR) {
331 if (bp->b_error == 0)
332 bp->b_error = EIO;
333 diskerr(bio, sc->ld_disk.d_cdev, "hard error", -1, 1);
334 kprintf("\n");
335 } else {
336 bp->b_resid = 0;
337 }
338 biodone(bio);
339}
340
341static int
342mfi_disk_dump(struct dev_dump_args *ap)
343{
344 cdev_t dev = ap->a_head.a_dev;
345 off_t offset = ap->a_offset;
346 void *virt = ap->a_virtual;
347 size_t len = ap->a_length;
348 struct mfi_disk *sc;
349 struct mfi_softc *parent_sc;
350 int error;
351
352 sc = dev->si_drv1;
353 parent_sc = sc->ld_controller;
354
355 if (len > 0) {
356 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
357 MFI_SECTOR_LEN, virt, len)) != 0)
358 return (error);
359 } else {
360 /* mfi_sync_cache(parent_sc, sc->ld_id); */
361 }
362
363 return (0);
364}