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 1.9 2004/05/19 22:52:46 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 <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 /* clone */ NULL, 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 defined(__DragonFly__) || __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 defined(__DragonFly__) || __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, u_int count, u_int blkno, u_int secsize) 199 { 200 201 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 202 struct amr_softc *amr_sc; 203 vm_paddr_t addr = 0; 204 long blkcnt; 205 int dumppages = MAXDUMPPGS; 206 int error = 0; 207 int driveno; 208 int i; 209 210 debug_called(1); 211 212 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 213 214 if (!amrd_sc || !amr_sc) 215 return(ENXIO); 216 217 blkcnt = howmany(PAGE_SIZE, secsize); 218 219 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 220 221 while (count > 0) { 222 caddr_t va = NULL; 223 224 if ((count / blkcnt) < dumppages) 225 dumppages = count / blkcnt; 226 227 for (i = 0; i < dumppages; ++i) { 228 vm_paddr_t a = addr + (i * PAGE_SIZE); 229 if (is_physical_memory(a)) 230 va = pmap_kenter_temporary(trunc_page(a), i); 231 else 232 va = pmap_kenter_temporary(trunc_page(0), i); 233 } 234 235 if ((error = amr_dump_blocks(amr_sc, driveno, blkno, (void *)va, 236 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) 237 return(error); 238 239 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0) 240 return(EINTR); 241 242 blkno += blkcnt * dumppages; 243 count -= blkcnt * dumppages; 244 addr += PAGE_SIZE * dumppages; 245 } 246 return (0); 247 } 248 /* 249 * Read/write routine for a buffer. Finds the proper unit, range checks 250 * arguments, and schedules the transfer. Does not wait for the transfer 251 * to complete. Multi-page transfers are supported. All I/O requests must 252 * be a multiple of a sector in length. 253 */ 254 static void 255 amrd_strategy(struct bio *bio) 256 { 257 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 258 259 /* bogus disk? */ 260 if (sc == NULL) { 261 bio->bio_error = EINVAL; 262 goto bad; 263 } 264 265 devstat_start_transaction(&sc->amrd_stats); 266 amr_submit_bio(sc->amrd_controller, bio); 267 return; 268 269 bad: 270 bio->bio_flags |= BIO_ERROR; 271 272 /* 273 * Correctly set the buf to indicate a completed transfer 274 */ 275 bio->bio_resid = bio->bio_bcount; 276 biodone(bio); 277 return; 278 } 279 280 void 281 amrd_intr(void *data) 282 { 283 struct bio *bio = (struct bio *)data; 284 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; 285 286 debug_called(2); 287 288 if (bio->bio_flags & BIO_ERROR) { 289 bio->bio_error = EIO; 290 debug(1, "i/o error\n"); 291 } else { 292 bio->bio_resid = 0; 293 } 294 295 AMR_BIO_FINISH(bio); 296 } 297 298 static int 299 amrd_probe(device_t dev) 300 { 301 302 debug_called(1); 303 304 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 305 return (0); 306 } 307 308 static int 309 amrd_attach(device_t dev) 310 { 311 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 312 device_t parent; 313 314 debug_called(1); 315 316 parent = device_get_parent(dev); 317 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 318 sc->amrd_unit = device_get_unit(dev); 319 sc->amrd_drive = device_get_ivars(dev); 320 sc->amrd_dev = dev; 321 322 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 323 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 324 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 325 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 326 327 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 328 DEVSTAT_NO_ORDERED_TAGS, 329 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 330 DEVSTAT_PRIORITY_ARRAY); 331 332 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_cdevsw); 333 sc->amrd_dev_t->si_drv1 = sc; 334 335 /* set maximum I/O size to match the maximum s/g size */ 336 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 337 338 return (0); 339 } 340 341 static int 342 amrd_detach(device_t dev) 343 { 344 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 345 346 debug_called(1); 347 348 if (sc->amrd_flags & AMRD_OPEN) 349 return(EBUSY); 350 351 devstat_remove_entry(&sc->amrd_stats); 352 disk_destroy(&sc->amrd_disk); 353 return(0); 354 } 355 356