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 99 static device_method_t amrd_methods[] = { 100 DEVMETHOD(device_probe, amrd_probe), 101 DEVMETHOD(device_attach, amrd_attach), 102 DEVMETHOD(device_detach, amrd_detach), 103 { 0, 0 } 104 }; 105 106 static driver_t amrd_driver = { 107 "amrd", 108 amrd_methods, 109 sizeof(struct amrd_softc) 110 }; 111 112 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, NULL, NULL); 113 114 static int 115 amrd_open(struct dev_open_args *ap) 116 { 117 struct amrd_softc *sc = ap->a_head.a_dev->si_drv1; 118 119 debug_called(1); 120 121 if (sc == NULL) 122 return (ENXIO); 123 124 /* controller not active? */ 125 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 126 return(ENXIO); 127 128 return (0); 129 } 130 /******************************************************************************** 131 * System crashdump support 132 */ 133 134 static int 135 amrd_dump(struct dev_dump_args *ap) 136 { 137 cdev_t dev = ap->a_head.a_dev; 138 off_t offset = ap->a_offset; 139 void *virtual = ap->a_virtual; 140 size_t length = ap->a_length; 141 struct amrd_softc *amrd_sc; 142 struct amr_softc *amr_sc; 143 int error = 0; 144 145 amrd_sc = (struct amrd_softc *)dev->si_drv1; 146 if (amrd_sc == NULL) 147 return(ENXIO); 148 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 149 150 if (length > 0) { 151 int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 152 153 error = amr_dump_blocks(amr_sc, driveno, offset / AMR_BLKSIZE, 154 virtual, (int)length / AMR_BLKSIZE); 155 } 156 return(error); 157 } 158 159 /* 160 * Read/write routine for a buffer. Finds the proper unit, range checks 161 * arguments, and schedules the transfer. Does not wait for the transfer 162 * to complete. Multi-page transfers are supported. All I/O requests must 163 * be a multiple of a sector in length. 164 */ 165 static int 166 amrd_strategy(struct dev_strategy_args *ap) 167 { 168 cdev_t dev = ap->a_head.a_dev; 169 struct bio *bio = ap->a_bio; 170 struct buf *bp = bio->bio_buf; 171 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 172 173 /* bogus disk? */ 174 if (sc == NULL) { 175 bp->b_error = EINVAL; 176 goto bad; 177 } 178 bio->bio_driver_info = sc; 179 180 devstat_start_transaction(&sc->amrd_stats); 181 amr_submit_bio(sc->amrd_controller, bio); 182 return (0); 183 184 bad: 185 bp->b_flags |= B_ERROR; 186 187 /* 188 * Correctly set the buf to indicate a completed transfer 189 */ 190 bp->b_resid = bp->b_bcount; 191 biodone(bio); 192 return (0); 193 } 194 195 void 196 amrd_intr(void *data) 197 { 198 struct bio *bio = (struct bio *)data; 199 struct buf *bp = bio->bio_buf; 200 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_driver_info; 201 202 debug_called(2); 203 204 devstat_end_transaction_buf(&sc->amrd_stats, bp); 205 if (bp->b_flags & B_ERROR) { 206 bp->b_error = EIO; 207 debug(1, "i/o error\n"); 208 } else { 209 bp->b_resid = 0; 210 } 211 212 biodone(bio); 213 } 214 215 static int 216 amrd_probe(device_t dev) 217 { 218 219 debug_called(1); 220 221 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 222 return (0); 223 } 224 225 static int 226 amrd_attach(device_t dev) 227 { 228 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 229 device_t parent; 230 struct disk_info info; 231 232 debug_called(1); 233 234 parent = device_get_parent(dev); 235 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 236 sc->amrd_unit = device_get_unit(dev); 237 sc->amrd_drive = device_get_ivars(dev); 238 sc->amrd_dev = dev; 239 240 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 241 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 242 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 243 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 244 245 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 246 DEVSTAT_NO_ORDERED_TAGS, 247 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 248 DEVSTAT_PRIORITY_ARRAY); 249 250 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, &amrd_ops); 251 sc->amrd_dev_t->si_drv1 = sc; 252 253 /* set maximum I/O size to match the maximum s/g size */ 254 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 255 256 /* 257 * Set disk info, as it appears that all needed data is available already. 258 * Setting the disk info will also cause the probing to start. 259 */ 260 bzero(&info, sizeof(info)); 261 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 262 info.d_media_blocks = sc->amrd_drive->al_size; 263 264 info.d_type = DTYPE_SCSI; /* mandatory */ 265 info.d_secpertrack = sc->amrd_drive->al_sectors; 266 info.d_nheads = sc->amrd_drive->al_heads; 267 info.d_ncylinders = sc->amrd_drive->al_cylinders; 268 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 269 270 disk_setdiskinfo(&sc->amrd_disk, &info); 271 272 return (0); 273 } 274 275 static int 276 amrd_detach(device_t dev) 277 { 278 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 279 280 debug_called(1); 281 282 #if 0 /* XXX swildner */ 283 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN) 284 return(EBUSY); 285 #endif 286 287 devstat_remove_entry(&sc->amrd_stats); 288 disk_destroy(&sc->amrd_disk); 289 290 return(0); 291 } 292 293