amr_disk.c revision 107756
1/*- 2 * Copyright (c) 1999 Jonathan Lemon 3 * Copyright (c) 1999, 2000 Michael Smith 4 * Copyright (c) 2000 BSDi 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 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 26 * SUCH DAMAGE. 27 * 28 * Copyright (c) 2002 Eric Moore 29 * Copyright (c) 2002 LSI Logic Corporation 30 * All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 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 42 * herein. 43 * 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 54 * SUCH DAMAGE. 55 * 56 * 57 * $FreeBSD: head/sys/dev/amr/amr_disk.c 107756 2002-12-11 20:59:46Z emoore $ 58 */ 59 60/* 61 * Disk driver for AMI MegaRaid controllers 62 */ 63 64#include <sys/param.h> 65#include <sys/systm.h> 66#include <sys/kernel.h> 67 68#include <dev/amr/amr_compat.h> 69#include <sys/bus.h> 70#include <sys/conf.h> 71#include <sys/devicestat.h> 72#include <sys/disk.h> 73 74#include <machine/bus.h> 75#include <sys/rman.h> 76 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> 81 82/* prototypes */ 83static int amrd_probe(device_t dev); 84static int amrd_attach(device_t dev); 85static int amrd_detach(device_t dev); 86 87static d_open_t amrd_open; 88static d_close_t amrd_close; 89static d_strategy_t amrd_strategy; 90static d_ioctl_t amrd_ioctl; 91 92#define AMRD_CDEV_MAJOR 133 93 94static struct cdevsw amrd_cdevsw = { 95 /* open */ amrd_open, 96 /* close */ amrd_close, 97 /* read */ physread, 98 /* write */ physwrite, 99 /* ioctl */ amrd_ioctl, 100 /* poll */ nopoll, 101 /* mmap */ nommap, 102 /* strategy */ amrd_strategy, 103 /* name */ "amrd", 104 /* maj */ AMRD_CDEV_MAJOR, 105 /* dump */ nodump, 106 /* psize */ nopsize, 107 /* flags */ D_DISK, 108#if __FreeBSD_version < 500000 109 /* bmaj */ -1 110#endif 111}; 112 113static devclass_t amrd_devclass; 114static struct cdevsw amrddisk_cdevsw; 115#ifdef FREEBSD_4 116static int disks_registered = 0; 117#endif 118 119static device_method_t amrd_methods[] = { 120 DEVMETHOD(device_probe, amrd_probe), 121 DEVMETHOD(device_attach, amrd_attach), 122 DEVMETHOD(device_detach, amrd_detach), 123 { 0, 0 } 124}; 125 126static driver_t amrd_driver = { 127 "amrd", 128 amrd_methods, 129 sizeof(struct amrd_softc) 130}; 131 132DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 133 134static int 135amrd_open(dev_t dev, int flags, int fmt, d_thread_t *td) 136{ 137 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 138#if __FreeBSD_version < 500000 /* old buf style */ 139 struct disklabel *label; 140#endif 141 142 debug_called(1); 143 144 if (sc == NULL) 145 return (ENXIO); 146 147 /* controller not active? */ 148 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 149 return(ENXIO); 150 151#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; 161#else 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; 166#endif 167 168 sc->amrd_flags |= AMRD_OPEN; 169 return (0); 170} 171 172static int 173amrd_close(dev_t dev, int flags, int fmt, d_thread_t *td) 174{ 175 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 176 177 debug_called(1); 178 179 if (sc == NULL) 180 return (ENXIO); 181 sc->amrd_flags &= ~AMRD_OPEN; 182 return (0); 183} 184 185static int 186amrd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 187{ 188 189 return (ENOTTY); 190} 191 192/* 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. 197 */ 198static void 199amrd_strategy(struct bio *bio) 200{ 201 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 202 203 /* bogus disk? */ 204 if (sc == NULL) { 205 bio->bio_error = EINVAL; 206 goto bad; 207 } 208 209 devstat_start_transaction(&sc->amrd_stats); 210 amr_submit_bio(sc->amrd_controller, bio); 211 return; 212 213 bad: 214 bio->bio_flags |= BIO_ERROR; 215 216 /* 217 * Correctly set the buf to indicate a completed transfer 218 */ 219 bio->bio_resid = bio->bio_bcount; 220 biodone(bio); 221 return; 222} 223 224void 225amrd_intr(void *data) 226{ 227 struct bio *bio = (struct bio *)data; 228 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 229 230 debug_called(2); 231 232 if (bio->bio_flags & BIO_ERROR) { 233 bio->bio_error = EIO; 234 debug(1, "i/o error\n"); 235 } else { 236 bio->bio_resid = 0; 237 } 238 239 AMR_BIO_FINISH(bio); 240} 241 242static int 243amrd_probe(device_t dev) 244{ 245 246 debug_called(1); 247 248 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 249 return (0); 250} 251 252static int 253amrd_attach(device_t dev) 254{ 255 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 256 device_t parent; 257 258 debug_called(1); 259 260 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); 264 sc->amrd_dev = dev; 265 266 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))); 270 271 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); 275 276 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; 278#ifdef FREEBSD_4 279 disks_registered++; 280#endif 281 282 /* 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; 284 285 return (0); 286} 287 288static int 289amrd_detach(device_t dev) 290{ 291 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 292 293 debug_called(1); 294 295 if (sc->amrd_flags & AMRD_OPEN) 296 return(EBUSY); 297 298 devstat_remove_entry(&sc->amrd_stats); 299#ifdef FREEBSD_4 300 if (--disks_registered == 0) 301 cdevsw_remove(&amrddisk_cdevsw); 302#else 303 disk_destroy(sc->amrd_dev_t); 304#endif 305 return(0); 306} 307 308