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 1.13 2006/10/25 20:56:00 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/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 #define AMRD_CDEV_MAJOR 133 97 98 static struct dev_ops amrd_ops = { 99 { "amrd", AMRD_CDEV_MAJOR, D_DISK }, 100 .d_open = amrd_open, 101 .d_close = amrd_close, 102 .d_read = physread, 103 .d_write = physwrite, 104 .d_ioctl = amrd_ioctl, 105 .d_strategy = amrd_strategy, 106 .d_dump = amrd_dump 107 }; 108 109 static devclass_t amrd_devclass; 110 111 static device_method_t amrd_methods[] = { 112 DEVMETHOD(device_probe, amrd_probe), 113 DEVMETHOD(device_attach, amrd_attach), 114 DEVMETHOD(device_detach, amrd_detach), 115 { 0, 0 } 116 }; 117 118 static driver_t amrd_driver = { 119 "amrd", 120 amrd_methods, 121 sizeof(struct amrd_softc) 122 }; 123 124 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 125 126 static int 127 amrd_open(struct dev_open_args *ap) 128 { 129 cdev_t dev = ap->a_head.a_dev; 130 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 131 #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */ 132 struct disklabel *label; 133 #endif 134 135 debug_called(1); 136 137 if (sc == NULL) 138 return (ENXIO); 139 140 /* controller not active? */ 141 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 142 return(ENXIO); 143 144 #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */ 145 label = &sc->amrd_disk.d_label; 146 bzero(label, sizeof(*label)); 147 label->d_type = DTYPE_SCSI; 148 label->d_secsize = AMR_BLKSIZE; 149 label->d_nsectors = sc->amrd_drive->al_sectors; 150 label->d_ntracks = sc->amrd_drive->al_heads; 151 label->d_ncylinders = sc->amrd_drive->al_cylinders; 152 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 153 label->d_secperunit = sc->amrd_drive->al_size; 154 #else 155 sc->amrd_disk.d_sectorsize = AMR_BLKSIZE; 156 sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; 157 sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors; 158 sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads; 159 #endif 160 161 sc->amrd_flags |= AMRD_OPEN; 162 return (0); 163 } 164 165 static int 166 amrd_close(struct dev_close_args *ap) 167 { 168 cdev_t dev = ap->a_head.a_dev; 169 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 170 171 debug_called(1); 172 173 if (sc == NULL) 174 return (ENXIO); 175 sc->amrd_flags &= ~AMRD_OPEN; 176 return (0); 177 } 178 179 static int 180 amrd_ioctl(struct dev_ioctl_args *ap) 181 { 182 return (ENOTTY); 183 } 184 185 186 /******************************************************************************** 187 * System crashdump support 188 */ 189 int 190 amrd_dump(struct dev_dump_args *ap) 191 { 192 cdev_t dev = ap->a_head.a_dev; 193 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 194 struct amr_softc *amr_sc; 195 vm_paddr_t addr = 0; 196 long blkcnt; 197 int dumppages = MAXDUMPPGS; 198 int error = 0; 199 int driveno; 200 int i; 201 202 debug_called(1); 203 204 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 205 206 if (!amrd_sc || !amr_sc) 207 return(ENXIO); 208 209 blkcnt = howmany(PAGE_SIZE, ap->a_secsize); 210 211 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 212 213 while (ap->a_count > 0) { 214 caddr_t va = NULL; 215 216 if ((ap->a_count / blkcnt) < dumppages) 217 dumppages = ap->a_count / blkcnt; 218 219 for (i = 0; i < dumppages; ++i) { 220 vm_paddr_t a = addr + (i * PAGE_SIZE); 221 if (is_physical_memory(a)) 222 va = pmap_kenter_temporary(trunc_page(a), i); 223 else 224 va = pmap_kenter_temporary(trunc_page(0), i); 225 } 226 227 if ((error = amr_dump_blocks(amr_sc, driveno, ap->a_blkno, (void *)va, 228 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) 229 return(error); 230 231 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0) 232 return(EINTR); 233 234 ap->a_blkno += blkcnt * dumppages; 235 ap->a_count -= blkcnt * dumppages; 236 addr += PAGE_SIZE * dumppages; 237 } 238 return (0); 239 } 240 /* 241 * Read/write routine for a buffer. Finds the proper unit, range checks 242 * arguments, and schedules the transfer. Does not wait for the transfer 243 * to complete. Multi-page transfers are supported. All I/O requests must 244 * be a multiple of a sector in length. 245 */ 246 static int 247 amrd_strategy(struct dev_strategy_args *ap) 248 { 249 cdev_t dev = ap->a_head.a_dev; 250 struct bio *bio = ap->a_bio; 251 struct buf *bp = bio->bio_buf; 252 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 253 254 /* bogus disk? */ 255 if (sc == NULL) { 256 bp->b_error = EINVAL; 257 goto bad; 258 } 259 bio->bio_driver_info = sc; 260 261 devstat_start_transaction(&sc->amrd_stats); 262 amr_submit_bio(sc->amrd_controller, bio); 263 return(0); 264 265 bad: 266 bp->b_flags |= B_ERROR; 267 268 /* 269 * Correctly set the buf to indicate a completed transfer 270 */ 271 bp->b_resid = bp->b_bcount; 272 biodone(bio); 273 return(0); 274 } 275 276 void 277 amrd_intr(struct bio *bio) 278 { 279 struct buf *bp = bio->bio_buf; 280 281 debug_called(2); 282 283 if (bp->b_flags & B_ERROR) { 284 bp->b_error = EIO; 285 debug(1, "i/o error\n"); 286 } else { 287 bp->b_resid = 0; 288 } 289 biodone(bio); 290 } 291 292 static int 293 amrd_probe(device_t dev) 294 { 295 296 debug_called(1); 297 298 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 299 return (0); 300 } 301 302 static int 303 amrd_attach(device_t dev) 304 { 305 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 306 device_t parent; 307 308 debug_called(1); 309 310 parent = device_get_parent(dev); 311 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 312 sc->amrd_unit = device_get_unit(dev); 313 sc->amrd_drive = device_get_ivars(dev); 314 sc->amrd_dev = dev; 315 316 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 317 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 318 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 319 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 320 321 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 322 DEVSTAT_NO_ORDERED_TAGS, 323 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 324 DEVSTAT_PRIORITY_ARRAY); 325 326 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_ops); 327 sc->amrd_dev_t->si_drv1 = sc; 328 329 /* set maximum I/O size to match the maximum s/g size */ 330 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 331 332 return (0); 333 } 334 335 static int 336 amrd_detach(device_t dev) 337 { 338 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 339 340 debug_called(1); 341 342 if (sc->amrd_flags & AMRD_OPEN) 343 return(EBUSY); 344 345 devstat_remove_entry(&sc->amrd_stats); 346 disk_destroy(&sc->amrd_disk); 347 return(0); 348 } 349 350