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 1.6 2003/10/13 06:56:13 hmp 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 <vm/vm.h> 75 #include <vm/pmap.h> 76 77 #include <machine/bus.h> 78 #include <machine/md_var.h> 79 #include <sys/rman.h> 80 81 #include "amrio.h" 82 #include "amrreg.h" 83 #include "amrvar.h" 84 #include "amr_tables.h" 85 86 /* prototypes */ 87 static int amrd_probe(device_t dev); 88 static int amrd_attach(device_t dev); 89 static int amrd_detach(device_t dev); 90 91 static d_open_t amrd_open; 92 static d_close_t amrd_close; 93 static d_strategy_t amrd_strategy; 94 static d_ioctl_t amrd_ioctl; 95 static d_dump_t amrd_dump; 96 97 #define AMRD_CDEV_MAJOR 133 98 99 static struct cdevsw amrd_cdevsw = { 100 /* name */ "amrd", 101 /* maj */ AMRD_CDEV_MAJOR, 102 /* flags */ D_DISK, 103 /* port */ NULL, 104 /* autoq */ 0, 105 106 /* open */ amrd_open, 107 /* close */ amrd_close, 108 /* read */ physread, 109 /* write */ physwrite, 110 /* ioctl */ amrd_ioctl, 111 /* poll */ nopoll, 112 /* mmap */ nommap, 113 /* strategy */ amrd_strategy, 114 /* dump */ amrd_dump, 115 /* psize */ nopsize 116 }; 117 118 static devclass_t amrd_devclass; 119 120 static device_method_t amrd_methods[] = { 121 DEVMETHOD(device_probe, amrd_probe), 122 DEVMETHOD(device_attach, amrd_attach), 123 DEVMETHOD(device_detach, amrd_detach), 124 { 0, 0 } 125 }; 126 127 static driver_t amrd_driver = { 128 "amrd", 129 amrd_methods, 130 sizeof(struct amrd_softc) 131 }; 132 133 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 134 135 static int 136 amrd_open(dev_t dev, int flags, int fmt, d_thread_t *td) 137 { 138 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 139 #if __FreeBSD_version < 500000 /* old buf style */ 140 struct disklabel *label; 141 #endif 142 143 debug_called(1); 144 145 if (sc == NULL) 146 return (ENXIO); 147 148 /* controller not active? */ 149 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 150 return(ENXIO); 151 152 #if __FreeBSD_version < 500000 /* old buf style */ 153 label = &sc->amrd_disk.d_label; 154 bzero(label, sizeof(*label)); 155 label->d_type = DTYPE_SCSI; 156 label->d_secsize = AMR_BLKSIZE; 157 label->d_nsectors = sc->amrd_drive->al_sectors; 158 label->d_ntracks = sc->amrd_drive->al_heads; 159 label->d_ncylinders = sc->amrd_drive->al_cylinders; 160 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 161 label->d_secperunit = sc->amrd_drive->al_size; 162 #else 163 sc->amrd_disk.d_sectorsize = AMR_BLKSIZE; 164 sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; 165 sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors; 166 sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads; 167 #endif 168 169 sc->amrd_flags |= AMRD_OPEN; 170 return (0); 171 } 172 173 static int 174 amrd_close(dev_t dev, int flags, int fmt, d_thread_t *td) 175 { 176 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 177 178 debug_called(1); 179 180 if (sc == NULL) 181 return (ENXIO); 182 sc->amrd_flags &= ~AMRD_OPEN; 183 return (0); 184 } 185 186 static int 187 amrd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 188 { 189 190 return (ENOTTY); 191 } 192 193 194 /******************************************************************************** 195 * System crashdump support 196 */ 197 int 198 amrd_dump(dev_t dev) 199 { 200 201 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 202 struct amr_softc *amr_sc; 203 u_int count, blkno, secsize; 204 vm_paddr_t addr = 0; 205 long blkcnt; 206 int dumppages = MAXDUMPPGS; 207 int error = 0; 208 int driveno; 209 int i; 210 211 debug_called(1); 212 213 if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize))) 214 return(error); 215 216 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 217 218 if (!amrd_sc || !amr_sc) 219 return(ENXIO); 220 221 blkcnt = howmany(PAGE_SIZE, secsize); 222 223 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 224 225 while (count > 0) { 226 caddr_t va = NULL; 227 228 if ((count / blkcnt) < dumppages) 229 dumppages = count / blkcnt; 230 231 for (i = 0; i < dumppages; ++i) { 232 vm_paddr_t a = addr + (i * PAGE_SIZE); 233 if (is_physical_memory(a)) 234 va = pmap_kenter_temporary(trunc_page(a), i); 235 else 236 va = pmap_kenter_temporary(trunc_page(0), i); 237 } 238 239 if ((error = amr_dump_blocks(amr_sc, driveno, blkno, (void *)va, 240 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) 241 return(error); 242 243 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0) 244 return(EINTR); 245 246 blkno += blkcnt * dumppages; 247 count -= blkcnt * dumppages; 248 addr += PAGE_SIZE * dumppages; 249 } 250 return (0); 251 } 252 /* 253 * Read/write routine for a buffer. Finds the proper unit, range checks 254 * arguments, and schedules the transfer. Does not wait for the transfer 255 * to complete. Multi-page transfers are supported. All I/O requests must 256 * be a multiple of a sector in length. 257 */ 258 static void 259 amrd_strategy(struct bio *bio) 260 { 261 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 262 263 /* bogus disk? */ 264 if (sc == NULL) { 265 bio->bio_error = EINVAL; 266 goto bad; 267 } 268 269 devstat_start_transaction(&sc->amrd_stats); 270 amr_submit_bio(sc->amrd_controller, bio); 271 return; 272 273 bad: 274 bio->bio_flags |= BIO_ERROR; 275 276 /* 277 * Correctly set the buf to indicate a completed transfer 278 */ 279 bio->bio_resid = bio->bio_bcount; 280 biodone(bio); 281 return; 282 } 283 284 void 285 amrd_intr(void *data) 286 { 287 struct bio *bio = (struct bio *)data; 288 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 289 290 debug_called(2); 291 292 if (bio->bio_flags & BIO_ERROR) { 293 bio->bio_error = EIO; 294 debug(1, "i/o error\n"); 295 } else { 296 bio->bio_resid = 0; 297 } 298 299 AMR_BIO_FINISH(bio); 300 } 301 302 static int 303 amrd_probe(device_t dev) 304 { 305 306 debug_called(1); 307 308 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 309 return (0); 310 } 311 312 static int 313 amrd_attach(device_t dev) 314 { 315 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 316 device_t parent; 317 318 debug_called(1); 319 320 parent = device_get_parent(dev); 321 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 322 sc->amrd_unit = device_get_unit(dev); 323 sc->amrd_drive = device_get_ivars(dev); 324 sc->amrd_dev = dev; 325 326 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 327 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 328 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 329 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 330 331 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 332 DEVSTAT_NO_ORDERED_TAGS, 333 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 334 DEVSTAT_PRIORITY_ARRAY); 335 336 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_cdevsw); 337 sc->amrd_dev_t->si_drv1 = sc; 338 339 /* set maximum I/O size to match the maximum s/g size */ 340 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 341 342 return (0); 343 } 344 345 static int 346 amrd_detach(device_t dev) 347 { 348 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 349 350 debug_called(1); 351 352 if (sc->amrd_flags & AMRD_OPEN) 353 return(EBUSY); 354 355 devstat_remove_entry(&sc->amrd_stats); 356 disk_destroy(&sc->amrd_disk); 357 return(0); 358 } 359 360