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 */ 58 59 /* 60 * Disk driver for AMI MegaRaid controllers 61 */ 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 67 #include "amr_compat.h" 68 #include <sys/bus.h> 69 #include <sys/conf.h> 70 #include <sys/devicestat.h> 71 #include <sys/disk.h> 72 #include <sys/dtype.h> 73 #include <sys/rman.h> 74 75 #include <vm/vm.h> 76 #include <vm/pmap.h> 77 78 #include <machine/md_var.h> 79 80 #include "amrio.h" 81 #include "amrreg.h" 82 #include "amrvar.h" 83 #include "amr_tables.h" 84 85 /* prototypes */ 86 static int amrd_probe(device_t dev); 87 static int amrd_attach(device_t dev); 88 static int amrd_detach(device_t dev); 89 90 static d_open_t amrd_open; 91 static d_close_t amrd_close; 92 static d_strategy_t amrd_strategy; 93 static d_ioctl_t amrd_ioctl; 94 static d_dump_t amrd_dump; 95 96 static struct dev_ops amrd_ops = { 97 { "amrd", 0, D_DISK }, 98 .d_open = amrd_open, 99 .d_close = amrd_close, 100 .d_read = physread, 101 .d_write = physwrite, 102 .d_ioctl = amrd_ioctl, 103 .d_strategy = amrd_strategy, 104 .d_dump = amrd_dump 105 }; 106 107 static devclass_t amrd_devclass; 108 109 static device_method_t amrd_methods[] = { 110 DEVMETHOD(device_probe, amrd_probe), 111 DEVMETHOD(device_attach, amrd_attach), 112 DEVMETHOD(device_detach, amrd_detach), 113 { 0, 0 } 114 }; 115 116 static driver_t amrd_driver = { 117 "amrd", 118 amrd_methods, 119 sizeof(struct amrd_softc) 120 }; 121 122 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 123 124 static int 125 amrd_open(struct dev_open_args *ap) 126 { 127 cdev_t dev = ap->a_head.a_dev; 128 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 129 130 debug_called(1); 131 132 if (sc == NULL) 133 return (ENXIO); 134 135 /* controller not active? */ 136 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 137 return(ENXIO); 138 #if 0 139 bzero(&info, sizeof(info)); 140 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 141 info.d_media_blocks = sc->amrd_drive->al_size; 142 143 info.d_type = DTYPE_SCSI; /* mandatory */ 144 info.d_secpertrack = sc->amrd_drive->al_sectors; 145 info.d_nheads = sc->amrd_drive->al_heads; 146 info.d_ncylinders = sc->amrd_drive->al_cylinders; 147 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 148 149 disk_setdiskinfo(&sc->amrd_disk, &info); 150 #endif 151 sc->amrd_flags |= AMRD_OPEN; 152 return (0); 153 } 154 155 static int 156 amrd_close(struct dev_close_args *ap) 157 { 158 cdev_t dev = ap->a_head.a_dev; 159 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 160 161 debug_called(1); 162 163 if (sc == NULL) 164 return (ENXIO); 165 sc->amrd_flags &= ~AMRD_OPEN; 166 return (0); 167 } 168 169 static int 170 amrd_ioctl(struct dev_ioctl_args *ap) 171 { 172 return (ENOTTY); 173 } 174 175 176 /******************************************************************************** 177 * System crashdump support 178 */ 179 int 180 amrd_dump(struct dev_dump_args *ap) 181 { 182 cdev_t dev = ap->a_head.a_dev; 183 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 184 struct amr_softc *amr_sc; 185 int error = 0; 186 int driveno; 187 188 debug_called(1); 189 190 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 191 192 if (!amrd_sc || !amr_sc) 193 return(ENXIO); 194 195 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 196 197 if (ap->a_length > 0) { 198 if ((error = amr_dump_blocks(amr_sc,driveno,ap->a_offset / AMR_BLKSIZE, 199 (void *)ap->a_virtual,(int) ap->a_length / AMR_BLKSIZE )) != 0) 200 return(error); 201 } 202 return(0); 203 204 } 205 /* 206 * Read/write routine for a buffer. Finds the proper unit, range checks 207 * arguments, and schedules the transfer. Does not wait for the transfer 208 * to complete. Multi-page transfers are supported. All I/O requests must 209 * be a multiple of a sector in length. 210 */ 211 static int 212 amrd_strategy(struct dev_strategy_args *ap) 213 { 214 cdev_t dev = ap->a_head.a_dev; 215 struct bio *bio = ap->a_bio; 216 struct buf *bp = bio->bio_buf; 217 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 218 219 /* bogus disk? */ 220 if (sc == NULL) { 221 bp->b_error = EINVAL; 222 goto bad; 223 } 224 bio->bio_driver_info = sc; 225 226 devstat_start_transaction(&sc->amrd_stats); 227 amr_submit_bio(sc->amrd_controller, bio); 228 return(0); 229 230 bad: 231 bp->b_flags |= B_ERROR; 232 233 /* 234 * Correctly set the buf to indicate a completed transfer 235 */ 236 bp->b_resid = bp->b_bcount; 237 biodone(bio); 238 return(0); 239 } 240 241 void 242 amrd_intr(struct bio *bio) 243 { 244 struct buf *bp = bio->bio_buf; 245 246 debug_called(2); 247 248 if (bp->b_flags & B_ERROR) { 249 bp->b_error = EIO; 250 debug(1, "i/o error\n"); 251 } else { 252 bp->b_resid = 0; 253 } 254 biodone(bio); 255 } 256 257 static int 258 amrd_probe(device_t dev) 259 { 260 261 debug_called(1); 262 263 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 264 return (0); 265 } 266 267 static int 268 amrd_attach(device_t dev) 269 { 270 struct disk_info info; 271 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 272 device_t parent; 273 274 debug_called(1); 275 276 parent = device_get_parent(dev); 277 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 278 sc->amrd_unit = device_get_unit(dev); 279 sc->amrd_drive = device_get_ivars(dev); 280 sc->amrd_dev = dev; 281 282 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 283 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 284 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 285 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 286 287 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 288 DEVSTAT_NO_ORDERED_TAGS, 289 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 290 DEVSTAT_PRIORITY_ARRAY); 291 292 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, &amrd_ops); 293 sc->amrd_dev_t->si_drv1 = sc; 294 295 /* set maximum I/O size to match the maximum s/g size */ 296 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 297 298 /* 299 * Set disk info, as it appears that all needed data is available already. 300 * Setting the disk info will also cause the probing to start. 301 */ 302 bzero(&info, sizeof(info)); 303 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 304 info.d_media_blocks = sc->amrd_drive->al_size; 305 306 info.d_type = DTYPE_SCSI; /* mandatory */ 307 info.d_secpertrack = sc->amrd_drive->al_sectors; 308 info.d_nheads = sc->amrd_drive->al_heads; 309 info.d_ncylinders = sc->amrd_drive->al_cylinders; 310 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 311 312 disk_setdiskinfo(&sc->amrd_disk, &info); 313 314 return (0); 315 } 316 317 static int 318 amrd_detach(device_t dev) 319 { 320 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 321 322 debug_called(1); 323 324 if (sc->amrd_flags & AMRD_OPEN) 325 return(EBUSY); 326 327 devstat_remove_entry(&sc->amrd_stats); 328 disk_destroy(&sc->amrd_disk); 329 return(0); 330 } 331 332