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 1.15 2007/06/17 23:50:16 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 #include <sys/dtype.h> 74 #include <sys/rman.h> 75 76 #include <vm/vm.h> 77 #include <vm/pmap.h> 78 79 #include <machine/md_var.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 dev_ops amrd_ops = { 100 { "amrd", AMRD_CDEV_MAJOR, D_DISK }, 101 .d_open = amrd_open, 102 .d_close = amrd_close, 103 .d_read = physread, 104 .d_write = physwrite, 105 .d_ioctl = amrd_ioctl, 106 .d_strategy = amrd_strategy, 107 .d_dump = amrd_dump 108 }; 109 110 static devclass_t amrd_devclass; 111 112 static device_method_t amrd_methods[] = { 113 DEVMETHOD(device_probe, amrd_probe), 114 DEVMETHOD(device_attach, amrd_attach), 115 DEVMETHOD(device_detach, amrd_detach), 116 { 0, 0 } 117 }; 118 119 static driver_t amrd_driver = { 120 "amrd", 121 amrd_methods, 122 sizeof(struct amrd_softc) 123 }; 124 125 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 126 127 static int 128 amrd_open(struct dev_open_args *ap) 129 { 130 cdev_t dev = ap->a_head.a_dev; 131 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 132 133 debug_called(1); 134 135 if (sc == NULL) 136 return (ENXIO); 137 138 /* controller not active? */ 139 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 140 return(ENXIO); 141 #if 0 142 bzero(&info, sizeof(info)); 143 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 144 info.d_media_blocks = sc->amrd_drive->al_size; 145 146 info.d_type = DTYPE_SCSI; /* mandatory */ 147 info.d_secpertrack = sc->amrd_drive->al_sectors; 148 info.d_nheads = sc->amrd_drive->al_heads; 149 info.d_ncylinders = sc->amrd_drive->al_cylinders; 150 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 151 152 disk_setdiskinfo(&sc->amrd_disk, &info); 153 #endif 154 sc->amrd_flags |= AMRD_OPEN; 155 return (0); 156 } 157 158 static int 159 amrd_close(struct dev_close_args *ap) 160 { 161 cdev_t dev = ap->a_head.a_dev; 162 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 163 164 debug_called(1); 165 166 if (sc == NULL) 167 return (ENXIO); 168 sc->amrd_flags &= ~AMRD_OPEN; 169 return (0); 170 } 171 172 static int 173 amrd_ioctl(struct dev_ioctl_args *ap) 174 { 175 return (ENOTTY); 176 } 177 178 179 /******************************************************************************** 180 * System crashdump support 181 */ 182 int 183 amrd_dump(struct dev_dump_args *ap) 184 { 185 cdev_t dev = ap->a_head.a_dev; 186 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 187 struct amr_softc *amr_sc; 188 vm_paddr_t addr = 0; 189 long blkcnt; 190 int dumppages = MAXDUMPPGS; 191 int error = 0; 192 int driveno; 193 int i; 194 195 debug_called(1); 196 197 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 198 199 if (!amrd_sc || !amr_sc) 200 return(ENXIO); 201 202 blkcnt = howmany(PAGE_SIZE, ap->a_secsize); 203 204 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 205 206 while (ap->a_count > 0) { 207 caddr_t va = NULL; 208 209 if ((ap->a_count / blkcnt) < dumppages) 210 dumppages = ap->a_count / blkcnt; 211 212 for (i = 0; i < dumppages; ++i) { 213 vm_paddr_t a = addr + (i * PAGE_SIZE); 214 if (is_physical_memory(a)) 215 va = pmap_kenter_temporary(trunc_page(a), i); 216 else 217 va = pmap_kenter_temporary(trunc_page(0), i); 218 } 219 220 if ((error = amr_dump_blocks(amr_sc, driveno, ap->a_blkno, (void *)va, 221 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) 222 return(error); 223 224 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0) 225 return(EINTR); 226 227 ap->a_blkno += blkcnt * dumppages; 228 ap->a_count -= blkcnt * dumppages; 229 addr += PAGE_SIZE * dumppages; 230 } 231 return (0); 232 } 233 /* 234 * Read/write routine for a buffer. Finds the proper unit, range checks 235 * arguments, and schedules the transfer. Does not wait for the transfer 236 * to complete. Multi-page transfers are supported. All I/O requests must 237 * be a multiple of a sector in length. 238 */ 239 static int 240 amrd_strategy(struct dev_strategy_args *ap) 241 { 242 cdev_t dev = ap->a_head.a_dev; 243 struct bio *bio = ap->a_bio; 244 struct buf *bp = bio->bio_buf; 245 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 246 247 /* bogus disk? */ 248 if (sc == NULL) { 249 bp->b_error = EINVAL; 250 goto bad; 251 } 252 bio->bio_driver_info = sc; 253 254 devstat_start_transaction(&sc->amrd_stats); 255 amr_submit_bio(sc->amrd_controller, bio); 256 return(0); 257 258 bad: 259 bp->b_flags |= B_ERROR; 260 261 /* 262 * Correctly set the buf to indicate a completed transfer 263 */ 264 bp->b_resid = bp->b_bcount; 265 biodone(bio); 266 return(0); 267 } 268 269 void 270 amrd_intr(struct bio *bio) 271 { 272 struct buf *bp = bio->bio_buf; 273 274 debug_called(2); 275 276 if (bp->b_flags & B_ERROR) { 277 bp->b_error = EIO; 278 debug(1, "i/o error\n"); 279 } else { 280 bp->b_resid = 0; 281 } 282 biodone(bio); 283 } 284 285 static int 286 amrd_probe(device_t dev) 287 { 288 289 debug_called(1); 290 291 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 292 return (0); 293 } 294 295 static int 296 amrd_attach(device_t dev) 297 { 298 struct disk_info info; 299 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 300 device_t parent; 301 302 debug_called(1); 303 304 parent = device_get_parent(dev); 305 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 306 sc->amrd_unit = device_get_unit(dev); 307 sc->amrd_drive = device_get_ivars(dev); 308 sc->amrd_dev = dev; 309 310 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 311 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 312 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 313 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 314 315 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 316 DEVSTAT_NO_ORDERED_TAGS, 317 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 318 DEVSTAT_PRIORITY_ARRAY); 319 320 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, &amrd_ops); 321 sc->amrd_dev_t->si_drv1 = sc; 322 323 /* set maximum I/O size to match the maximum s/g size */ 324 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 325 326 /* 327 * Set disk info, as it appears that all needed data is available already. 328 * Setting the disk info will also cause the probing to start. 329 */ 330 bzero(&info, sizeof(info)); 331 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 332 info.d_media_blocks = sc->amrd_drive->al_size; 333 334 info.d_type = DTYPE_SCSI; /* mandatory */ 335 info.d_secpertrack = sc->amrd_drive->al_sectors; 336 info.d_nheads = sc->amrd_drive->al_heads; 337 info.d_ncylinders = sc->amrd_drive->al_cylinders; 338 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 339 340 disk_setdiskinfo(&sc->amrd_disk, &info); 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