| 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 | |