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
28 * Copyright (c) 2002 Eric Moore
29 * Copyright (c) 2002 LSI Logic Corporation
30 * All rights reserved.
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. The party using or redistributing the source code and binary forms
41 * agrees to the disclaimer below and the terms and conditions set forth
44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * $FreeBSD: src/sys/dev/amr/amr_disk.c,v 1.5.2.5 2002/12/20 15:12:04 emoore Exp $
57 * $DragonFly: src/sys/dev/raid/amr/amr_disk.c,v 1.2 2003/06/17 04:28:22 dillon Exp $
61 * Disk driver for AMI MegaRaid controllers
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
68 #include <dev/amr/amr_compat.h>
71 #include <sys/devicestat.h>
74 #include <machine/bus.h>
77 #include <dev/amr/amrio.h>
78 #include <dev/amr/amrreg.h>
79 #include <dev/amr/amrvar.h>
80 #include <dev/amr/amr_tables.h>
83 static int amrd_probe(device_t dev);
84 static int amrd_attach(device_t dev);
85 static int amrd_detach(device_t dev);
87 static d_open_t amrd_open;
88 static d_close_t amrd_close;
89 static d_strategy_t amrd_strategy;
90 static d_ioctl_t amrd_ioctl;
92 #define AMRD_CDEV_MAJOR 133
94 static struct cdevsw amrd_cdevsw = {
96 /* close */ amrd_close,
98 /* write */ physwrite,
99 /* ioctl */ amrd_ioctl,
102 /* strategy */ amrd_strategy,
104 /* maj */ AMRD_CDEV_MAJOR,
108 #if __FreeBSD_version < 500000
113 static devclass_t amrd_devclass;
114 static struct cdevsw amrddisk_cdevsw;
116 static int disks_registered = 0;
119 static device_method_t amrd_methods[] = {
120 DEVMETHOD(device_probe, amrd_probe),
121 DEVMETHOD(device_attach, amrd_attach),
122 DEVMETHOD(device_detach, amrd_detach),
126 static driver_t amrd_driver = {
129 sizeof(struct amrd_softc)
132 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0);
135 amrd_open(dev_t dev, int flags, int fmt, d_thread_t *td)
137 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
138 #if __FreeBSD_version < 500000 /* old buf style */
139 struct disklabel *label;
147 /* controller not active? */
148 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN)
151 #if __FreeBSD_version < 500000 /* old buf style */
152 label = &sc->amrd_disk.d_label;
153 bzero(label, sizeof(*label));
154 label->d_type = DTYPE_SCSI;
155 label->d_secsize = AMR_BLKSIZE;
156 label->d_nsectors = sc->amrd_drive->al_sectors;
157 label->d_ntracks = sc->amrd_drive->al_heads;
158 label->d_ncylinders = sc->amrd_drive->al_cylinders;
159 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads;
160 label->d_secperunit = sc->amrd_drive->al_size;
162 sc->amrd_disk.d_sectorsize = AMR_BLKSIZE;
163 sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE;
164 sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors;
165 sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads;
168 sc->amrd_flags |= AMRD_OPEN;
173 amrd_close(dev_t dev, int flags, int fmt, d_thread_t *td)
175 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
181 sc->amrd_flags &= ~AMRD_OPEN;
186 amrd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td)
193 * Read/write routine for a buffer. Finds the proper unit, range checks
194 * arguments, and schedules the transfer. Does not wait for the transfer
195 * to complete. Multi-page transfers are supported. All I/O requests must
196 * be a multiple of a sector in length.
199 amrd_strategy(struct bio *bio)
201 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1;
205 bio->bio_error = EINVAL;
209 devstat_start_transaction(&sc->amrd_stats);
210 amr_submit_bio(sc->amrd_controller, bio);
214 bio->bio_flags |= BIO_ERROR;
217 * Correctly set the buf to indicate a completed transfer
219 bio->bio_resid = bio->bio_bcount;
225 amrd_intr(void *data)
227 struct bio *bio = (struct bio *)data;
228 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1;
232 if (bio->bio_flags & BIO_ERROR) {
233 bio->bio_error = EIO;
234 debug(1, "i/o error\n");
243 amrd_probe(device_t dev)
248 device_set_desc(dev, "LSILogic MegaRAID logical drive");
253 amrd_attach(device_t dev)
255 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
260 parent = device_get_parent(dev);
261 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent);
262 sc->amrd_unit = device_get_unit(dev);
263 sc->amrd_drive = device_get_ivars(dev);
266 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
267 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE),
268 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK,
269 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state)));
271 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE,
272 DEVSTAT_NO_ORDERED_TAGS,
273 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
274 DEVSTAT_PRIORITY_ARRAY);
276 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_cdevsw, &amrddisk_cdevsw);
277 sc->amrd_dev_t->si_drv1 = sc;
282 /* set maximum I/O size to match the maximum s/g size */
283 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE;
289 amrd_detach(device_t dev)
291 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
295 if (sc->amrd_flags & AMRD_OPEN)
298 devstat_remove_entry(&sc->amrd_stats);
300 if (--disks_registered == 0)
301 cdevsw_remove(&amrddisk_cdevsw);
303 disk_destroy(sc->amrd_dev_t);