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 * $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 1.5 2003/08/07 21:17:08 dillon 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 68 #include "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 "amrio.h" 78 #include "amrreg.h" 79 #include "amrvar.h" 80 #include "amr_tables.h" 81 82 /* prototypes */ 83 static int amrd_probe(device_t dev); 84 static int amrd_attach(device_t dev); 85 static int amrd_detach(device_t dev); 86 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; 91 92 #define AMRD_CDEV_MAJOR 133 93 94 static struct cdevsw amrd_cdevsw = { 95 /* name */ "amrd", 96 /* maj */ AMRD_CDEV_MAJOR, 97 /* flags */ D_DISK, 98 /* port */ NULL, 99 /* autoq */ 0, 100 101 /* open */ amrd_open, 102 /* close */ amrd_close, 103 /* read */ physread, 104 /* write */ physwrite, 105 /* ioctl */ amrd_ioctl, 106 /* poll */ nopoll, 107 /* mmap */ nommap, 108 /* strategy */ amrd_strategy, 109 /* dump */ nodump, 110 /* psize */ nopsize 111 }; 112 113 static devclass_t amrd_devclass; 114 115 static device_method_t amrd_methods[] = { 116 DEVMETHOD(device_probe, amrd_probe), 117 DEVMETHOD(device_attach, amrd_attach), 118 DEVMETHOD(device_detach, amrd_detach), 119 { 0, 0 } 120 }; 121 122 static driver_t amrd_driver = { 123 "amrd", 124 amrd_methods, 125 sizeof(struct amrd_softc) 126 }; 127 128 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 129 130 static int 131 amrd_open(dev_t dev, int flags, int fmt, d_thread_t *td) 132 { 133 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 134 #if __FreeBSD_version < 500000 /* old buf style */ 135 struct disklabel *label; 136 #endif 137 138 debug_called(1); 139 140 if (sc == NULL) 141 return (ENXIO); 142 143 /* controller not active? */ 144 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 145 return(ENXIO); 146 147 #if __FreeBSD_version < 500000 /* old buf style */ 148 label = &sc->amrd_disk.d_label; 149 bzero(label, sizeof(*label)); 150 label->d_type = DTYPE_SCSI; 151 label->d_secsize = AMR_BLKSIZE; 152 label->d_nsectors = sc->amrd_drive->al_sectors; 153 label->d_ntracks = sc->amrd_drive->al_heads; 154 label->d_ncylinders = sc->amrd_drive->al_cylinders; 155 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 156 label->d_secperunit = sc->amrd_drive->al_size; 157 #else 158 sc->amrd_disk.d_sectorsize = AMR_BLKSIZE; 159 sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; 160 sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors; 161 sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads; 162 #endif 163 164 sc->amrd_flags |= AMRD_OPEN; 165 return (0); 166 } 167 168 static int 169 amrd_close(dev_t dev, int flags, int fmt, d_thread_t *td) 170 { 171 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 172 173 debug_called(1); 174 175 if (sc == NULL) 176 return (ENXIO); 177 sc->amrd_flags &= ~AMRD_OPEN; 178 return (0); 179 } 180 181 static int 182 amrd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 183 { 184 185 return (ENOTTY); 186 } 187 188 /* 189 * Read/write routine for a buffer. Finds the proper unit, range checks 190 * arguments, and schedules the transfer. Does not wait for the transfer 191 * to complete. Multi-page transfers are supported. All I/O requests must 192 * be a multiple of a sector in length. 193 */ 194 static void 195 amrd_strategy(struct bio *bio) 196 { 197 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 198 199 /* bogus disk? */ 200 if (sc == NULL) { 201 bio->bio_error = EINVAL; 202 goto bad; 203 } 204 205 devstat_start_transaction(&sc->amrd_stats); 206 amr_submit_bio(sc->amrd_controller, bio); 207 return; 208 209 bad: 210 bio->bio_flags |= BIO_ERROR; 211 212 /* 213 * Correctly set the buf to indicate a completed transfer 214 */ 215 bio->bio_resid = bio->bio_bcount; 216 biodone(bio); 217 return; 218 } 219 220 void 221 amrd_intr(void *data) 222 { 223 struct bio *bio = (struct bio *)data; 224 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 225 226 debug_called(2); 227 228 if (bio->bio_flags & BIO_ERROR) { 229 bio->bio_error = EIO; 230 debug(1, "i/o error\n"); 231 } else { 232 bio->bio_resid = 0; 233 } 234 235 AMR_BIO_FINISH(bio); 236 } 237 238 static int 239 amrd_probe(device_t dev) 240 { 241 242 debug_called(1); 243 244 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 245 return (0); 246 } 247 248 static int 249 amrd_attach(device_t dev) 250 { 251 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 252 device_t parent; 253 254 debug_called(1); 255 256 parent = device_get_parent(dev); 257 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 258 sc->amrd_unit = device_get_unit(dev); 259 sc->amrd_drive = device_get_ivars(dev); 260 sc->amrd_dev = dev; 261 262 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 263 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 264 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 265 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 266 267 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 268 DEVSTAT_NO_ORDERED_TAGS, 269 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 270 DEVSTAT_PRIORITY_ARRAY); 271 272 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_cdevsw); 273 sc->amrd_dev_t->si_drv1 = sc; 274 275 /* set maximum I/O size to match the maximum s/g size */ 276 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 277 278 return (0); 279 } 280 281 static int 282 amrd_detach(device_t dev) 283 { 284 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 285 286 debug_called(1); 287 288 if (sc->amrd_flags & AMRD_OPEN) 289 return(EBUSY); 290 291 devstat_remove_entry(&sc->amrd_stats); 292 disk_destroy(&sc->amrd_disk); 293 return(0); 294 } 295 296