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 1.13 2006/10/25 20:56:00 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 "amr_compat.h"
71 #include <sys/devicestat.h>
78 #include <machine/md_var.h>
83 #include "amr_tables.h"
86 static int amrd_probe(device_t dev);
87 static int amrd_attach(device_t dev);
88 static int amrd_detach(device_t dev);
90 static d_open_t amrd_open;
91 static d_close_t amrd_close;
92 static d_strategy_t amrd_strategy;
93 static d_ioctl_t amrd_ioctl;
94 static d_dump_t amrd_dump;
96 #define AMRD_CDEV_MAJOR 133
98 static struct dev_ops amrd_ops = {
99 { "amrd", AMRD_CDEV_MAJOR, D_DISK },
101 .d_close = amrd_close,
103 .d_write = physwrite,
104 .d_ioctl = amrd_ioctl,
105 .d_strategy = amrd_strategy,
109 static devclass_t amrd_devclass;
111 static device_method_t amrd_methods[] = {
112 DEVMETHOD(device_probe, amrd_probe),
113 DEVMETHOD(device_attach, amrd_attach),
114 DEVMETHOD(device_detach, amrd_detach),
118 static driver_t amrd_driver = {
121 sizeof(struct amrd_softc)
124 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0);
127 amrd_open(struct dev_open_args *ap)
129 cdev_t dev = ap->a_head.a_dev;
130 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
131 #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */
132 struct disklabel *label;
140 /* controller not active? */
141 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN)
144 #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */
145 label = &sc->amrd_disk.d_label;
146 bzero(label, sizeof(*label));
147 label->d_type = DTYPE_SCSI;
148 label->d_secsize = AMR_BLKSIZE;
149 label->d_nsectors = sc->amrd_drive->al_sectors;
150 label->d_ntracks = sc->amrd_drive->al_heads;
151 label->d_ncylinders = sc->amrd_drive->al_cylinders;
152 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads;
153 label->d_secperunit = sc->amrd_drive->al_size;
155 sc->amrd_disk.d_sectorsize = AMR_BLKSIZE;
156 sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE;
157 sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors;
158 sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads;
161 sc->amrd_flags |= AMRD_OPEN;
166 amrd_close(struct dev_close_args *ap)
168 cdev_t dev = ap->a_head.a_dev;
169 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
175 sc->amrd_flags &= ~AMRD_OPEN;
180 amrd_ioctl(struct dev_ioctl_args *ap)
186 /********************************************************************************
187 * System crashdump support
190 amrd_dump(struct dev_dump_args *ap)
192 cdev_t dev = ap->a_head.a_dev;
193 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1;
194 struct amr_softc *amr_sc;
197 int dumppages = MAXDUMPPGS;
204 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller;
206 if (!amrd_sc || !amr_sc)
209 blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
211 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive;
213 while (ap->a_count > 0) {
216 if ((ap->a_count / blkcnt) < dumppages)
217 dumppages = ap->a_count / blkcnt;
219 for (i = 0; i < dumppages; ++i) {
220 vm_paddr_t a = addr + (i * PAGE_SIZE);
221 if (is_physical_memory(a))
222 va = pmap_kenter_temporary(trunc_page(a), i);
224 va = pmap_kenter_temporary(trunc_page(0), i);
227 if ((error = amr_dump_blocks(amr_sc, driveno, ap->a_blkno, (void *)va,
228 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0)
231 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0)
234 ap->a_blkno += blkcnt * dumppages;
235 ap->a_count -= blkcnt * dumppages;
236 addr += PAGE_SIZE * dumppages;
241 * Read/write routine for a buffer. Finds the proper unit, range checks
242 * arguments, and schedules the transfer. Does not wait for the transfer
243 * to complete. Multi-page transfers are supported. All I/O requests must
244 * be a multiple of a sector in length.
247 amrd_strategy(struct dev_strategy_args *ap)
249 cdev_t dev = ap->a_head.a_dev;
250 struct bio *bio = ap->a_bio;
251 struct buf *bp = bio->bio_buf;
252 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
256 bp->b_error = EINVAL;
259 bio->bio_driver_info = sc;
261 devstat_start_transaction(&sc->amrd_stats);
262 amr_submit_bio(sc->amrd_controller, bio);
266 bp->b_flags |= B_ERROR;
269 * Correctly set the buf to indicate a completed transfer
271 bp->b_resid = bp->b_bcount;
277 amrd_intr(struct bio *bio)
279 struct buf *bp = bio->bio_buf;
283 if (bp->b_flags & B_ERROR) {
285 debug(1, "i/o error\n");
293 amrd_probe(device_t dev)
298 device_set_desc(dev, "LSILogic MegaRAID logical drive");
303 amrd_attach(device_t dev)
305 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
310 parent = device_get_parent(dev);
311 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent);
312 sc->amrd_unit = device_get_unit(dev);
313 sc->amrd_drive = device_get_ivars(dev);
316 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
317 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE),
318 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK,
319 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state)));
321 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE,
322 DEVSTAT_NO_ORDERED_TAGS,
323 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
324 DEVSTAT_PRIORITY_ARRAY);
326 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_ops);
327 sc->amrd_dev_t->si_drv1 = sc;
329 /* set maximum I/O size to match the maximum s/g size */
330 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE;
336 amrd_detach(device_t dev)
338 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
342 if (sc->amrd_flags & AMRD_OPEN)
345 devstat_remove_entry(&sc->amrd_stats);
346 disk_destroy(&sc->amrd_disk);