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 /*- 29 * Copyright (c) 2002 Eric Moore 30 * Copyright (c) 2002 LSI Logic Corporation 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 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 43 * herein. 44 * 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 55 * SUCH DAMAGE. 56 * 57 * $FreeBSD: src/sys/dev/amr/amr_disk.c,v 1.39 2006/10/31 21:19:25 pjd Exp $ 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 #include <sys/module.h> 68 69 #include <sys/bio.h> 70 #include <sys/bus.h> 71 #include <sys/conf.h> 72 #include <sys/dtype.h> 73 74 #include <sys/rman.h> 75 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> 80 81 /* prototypes */ 82 static int amrd_probe(device_t dev); 83 static int amrd_attach(device_t dev); 84 static int amrd_detach(device_t dev); 85 86 static d_open_t amrd_open; 87 static d_strategy_t amrd_strategy; 88 static d_dump_t amrd_dump; 89 90 static struct dev_ops amrd_ops = { 91 { "amrd", 0, D_DISK }, 92 .d_open = amrd_open, 93 .d_strategy = amrd_strategy, 94 .d_dump = amrd_dump, 95 }; 96 97 static devclass_t amrd_devclass; 98 #ifdef FREEBSD_4 99 int amr_disks_registered = 0; 100 #endif 101 102 static device_method_t amrd_methods[] = { 103 DEVMETHOD(device_probe, amrd_probe), 104 DEVMETHOD(device_attach, amrd_attach), 105 DEVMETHOD(device_detach, amrd_detach), 106 { 0, 0 } 107 }; 108 109 static driver_t amrd_driver = { 110 "amrd", 111 amrd_methods, 112 sizeof(struct amrd_softc) 113 }; 114 115 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 116 117 static int 118 amrd_open(struct dev_open_args *ap) 119 { 120 struct amrd_softc *sc = ap->a_head.a_dev->si_drv1; 121 122 debug_called(1); 123 124 if (sc == NULL) 125 return (ENXIO); 126 127 /* controller not active? */ 128 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 129 return(ENXIO); 130 131 return (0); 132 } 133 /******************************************************************************** 134 * System crashdump support 135 */ 136 137 static int 138 amrd_dump(struct dev_dump_args *ap) 139 { 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; 146 int error; 147 148 amrd_sc = (struct amrd_softc *)dev->si_drv1; 149 if (amrd_sc == NULL) 150 return(ENXIO); 151 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 152 153 if (length > 0) { 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) 156 return(error); 157 158 } 159 return(0); 160 } 161 162 /* 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. 167 */ 168 static int 169 amrd_strategy(struct dev_strategy_args *ap) 170 { 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; 175 176 /* bogus disk? */ 177 if (sc == NULL) { 178 bp->b_error = EINVAL; 179 goto bad; 180 } 181 bio->bio_driver_info = sc; 182 183 devstat_start_transaction(&sc->amrd_stats); 184 amr_submit_bio(sc->amrd_controller, bio); 185 return (0); 186 187 bad: 188 bp->b_flags |= B_ERROR; 189 190 /* 191 * Correctly set the buf to indicate a completed transfer 192 */ 193 bp->b_resid = bp->b_bcount; 194 biodone(bio); 195 return (0); 196 } 197 198 void 199 amrd_intr(void *data) 200 { 201 struct bio *bio = (struct bio *)data; 202 struct buf *bp = bio->bio_buf; 203 204 debug_called(2); 205 206 if (bp->b_flags & B_ERROR) { 207 bp->b_error = EIO; 208 debug(1, "i/o error\n"); 209 } else { 210 bp->b_resid = 0; 211 } 212 213 biodone(bio); 214 } 215 216 static int 217 amrd_probe(device_t dev) 218 { 219 220 debug_called(1); 221 222 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 223 return (0); 224 } 225 226 static int 227 amrd_attach(device_t dev) 228 { 229 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 230 device_t parent; 231 struct disk_info info; 232 233 debug_called(1); 234 235 parent = device_get_parent(dev); 236 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 237 sc->amrd_unit = device_get_unit(dev); 238 sc->amrd_drive = device_get_ivars(dev); 239 sc->amrd_dev = dev; 240 241 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 242 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 243 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 244 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 245 246 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 247 DEVSTAT_NO_ORDERED_TAGS, 248 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 249 DEVSTAT_PRIORITY_ARRAY); 250 251 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, &amrd_ops); 252 sc->amrd_dev_t->si_drv1 = sc; 253 254 /* set maximum I/O size to match the maximum s/g size */ 255 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 256 257 /* 258 * Set disk info, as it appears that all needed data is available already. 259 * Setting the disk info will also cause the probing to start. 260 */ 261 bzero(&info, sizeof(info)); 262 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 263 info.d_media_blocks = sc->amrd_drive->al_size; 264 265 info.d_type = DTYPE_SCSI; /* mandatory */ 266 info.d_secpertrack = sc->amrd_drive->al_sectors; 267 info.d_nheads = sc->amrd_drive->al_heads; 268 info.d_ncylinders = sc->amrd_drive->al_cylinders; 269 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 270 271 disk_setdiskinfo(&sc->amrd_disk, &info); 272 273 return (0); 274 } 275 276 static int 277 amrd_detach(device_t dev) 278 { 279 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 280 281 debug_called(1); 282 283 #if 0 /* XXX swildner */ 284 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN) 285 return(EBUSY); 286 #endif 287 288 devstat_remove_entry(&sc->amrd_stats); 289 #ifdef FREEBSD_4 290 if (--amr_disks_registered == 0) 291 cdevsw_remove(&amrddisk_cdevsw); 292 #else 293 disk_destroy(&sc->amrd_disk); 294 #endif 295 return(0); 296 } 297 298