2 * Copyright (c) 1999 Jonathan Lemon
3 * Copyright (c) 1999, 2000 Michael Smith
4 * Copyright (c) 2000 BSDi
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * Copyright (c) 2002 Eric Moore
30 * Copyright (c) 2002 LSI Logic Corporation
31 * All rights reserved.
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. The party using or redistributing the source code and binary forms
42 * agrees to the disclaimer below and the terms and conditions set forth
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
57 * $FreeBSD: src/sys/dev/amr/amr_disk.c,v 1.39 2006/10/31 21:19:25 pjd Exp $
61 * Disk driver for AMI MegaRaid controllers
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/module.h>
72 #include <sys/dtype.h>
76 #include <dev/raid/amr/amrio.h>
77 #include <dev/raid/amr/amrreg.h>
78 #include <dev/raid/amr/amrvar.h>
79 #include <dev/raid/amr/amr_tables.h>
82 static int amrd_probe(device_t dev);
83 static int amrd_attach(device_t dev);
84 static int amrd_detach(device_t dev);
86 static d_open_t amrd_open;
87 static d_strategy_t amrd_strategy;
88 static d_dump_t amrd_dump;
90 static struct dev_ops amrd_ops = {
91 { "amrd", 0, D_DISK },
93 .d_strategy = amrd_strategy,
97 static devclass_t amrd_devclass;
99 int amr_disks_registered = 0;
102 static device_method_t amrd_methods[] = {
103 DEVMETHOD(device_probe, amrd_probe),
104 DEVMETHOD(device_attach, amrd_attach),
105 DEVMETHOD(device_detach, amrd_detach),
109 static driver_t amrd_driver = {
112 sizeof(struct amrd_softc)
115 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, NULL, NULL);
118 amrd_open(struct dev_open_args *ap)
120 struct amrd_softc *sc = ap->a_head.a_dev->si_drv1;
127 /* controller not active? */
128 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN)
133 /********************************************************************************
134 * System crashdump support
138 amrd_dump(struct dev_dump_args *ap)
140 cdev_t dev = ap->a_head.a_dev;
141 off_t offset = ap->a_offset;
142 void *virtual = ap->a_virtual;
143 size_t length = ap->a_length;
144 struct amrd_softc *amrd_sc;
145 struct amr_softc *amr_sc;
148 amrd_sc = (struct amrd_softc *)dev->si_drv1;
151 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller;
154 int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive;
155 if ((error = amr_dump_blocks(amr_sc,driveno,offset / AMR_BLKSIZE ,(void *)virtual,(int) length / AMR_BLKSIZE )) != 0)
163 * Read/write routine for a buffer. Finds the proper unit, range checks
164 * arguments, and schedules the transfer. Does not wait for the transfer
165 * to complete. Multi-page transfers are supported. All I/O requests must
166 * be a multiple of a sector in length.
169 amrd_strategy(struct dev_strategy_args *ap)
171 cdev_t dev = ap->a_head.a_dev;
172 struct bio *bio = ap->a_bio;
173 struct buf *bp = bio->bio_buf;
174 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
178 bp->b_error = EINVAL;
181 bio->bio_driver_info = sc;
183 devstat_start_transaction(&sc->amrd_stats);
184 amr_submit_bio(sc->amrd_controller, bio);
188 bp->b_flags |= B_ERROR;
191 * Correctly set the buf to indicate a completed transfer
193 bp->b_resid = bp->b_bcount;
199 amrd_intr(void *data)
201 struct bio *bio = (struct bio *)data;
202 struct buf *bp = bio->bio_buf;
203 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_driver_info;
207 devstat_end_transaction_buf(&sc->amrd_stats, bp);
208 if (bp->b_flags & B_ERROR) {
210 debug(1, "i/o error\n");
219 amrd_probe(device_t dev)
224 device_set_desc(dev, "LSILogic MegaRAID logical drive");
229 amrd_attach(device_t dev)
231 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
233 struct disk_info info;
237 parent = device_get_parent(dev);
238 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent);
239 sc->amrd_unit = device_get_unit(dev);
240 sc->amrd_drive = device_get_ivars(dev);
243 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
244 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE),
245 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK,
246 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state)));
248 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE,
249 DEVSTAT_NO_ORDERED_TAGS,
250 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
251 DEVSTAT_PRIORITY_ARRAY);
253 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, &amrd_ops);
254 sc->amrd_dev_t->si_drv1 = sc;
256 /* set maximum I/O size to match the maximum s/g size */
257 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE;
260 * Set disk info, as it appears that all needed data is available already.
261 * Setting the disk info will also cause the probing to start.
263 bzero(&info, sizeof(info));
264 info.d_media_blksize = AMR_BLKSIZE; /* optional */
265 info.d_media_blocks = sc->amrd_drive->al_size;
267 info.d_type = DTYPE_SCSI; /* mandatory */
268 info.d_secpertrack = sc->amrd_drive->al_sectors;
269 info.d_nheads = sc->amrd_drive->al_heads;
270 info.d_ncylinders = sc->amrd_drive->al_cylinders;
271 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads;
273 disk_setdiskinfo(&sc->amrd_disk, &info);
279 amrd_detach(device_t dev)
281 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
285 #if 0 /* XXX swildner */
286 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN)
290 devstat_remove_entry(&sc->amrd_stats);
292 if (--amr_disks_registered == 0)
293 cdevsw_remove(&amrddisk_cdevsw);
295 disk_destroy(&sc->amrd_disk);