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 struct disk_info info; 133 134 debug_called(1); 135 136 if (sc == NULL) 137 return (ENXIO); 138 139 /* controller not active? */ 140 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 141 return(ENXIO); 142 143 bzero(&info, sizeof(info)); 144 info.d_media_blksize = AMR_BLKSIZE; /* optional */ 145 info.d_media_blocks = sc->amrd_drive->al_size; 146 147 info.d_type = DTYPE_SCSI; /* mandatory */ 148 info.d_secpertrack = sc->amrd_drive->al_sectors; 149 info.d_nheads = sc->amrd_drive->al_heads; 150 info.d_ncylinders = sc->amrd_drive->al_cylinders; 151 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 152 153 disk_setdiskinfo(&sc->amrd_disk, &info); 154 155 sc->amrd_flags |= AMRD_OPEN; 156 return (0); 157 } 158 159 static int 160 amrd_close(struct dev_close_args *ap) 161 { 162 cdev_t dev = ap->a_head.a_dev; 163 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 164 165 debug_called(1); 166 167 if (sc == NULL) 168 return (ENXIO); 169 sc->amrd_flags &= ~AMRD_OPEN; 170 return (0); 171 } 172 173 static int 174 amrd_ioctl(struct dev_ioctl_args *ap) 175 { 176 return (ENOTTY); 177 } 178 179 180 /******************************************************************************** 181 * System crashdump support 182 */ 183 int 184 amrd_dump(struct dev_dump_args *ap) 185 { 186 cdev_t dev = ap->a_head.a_dev; 187 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 188 struct amr_softc *amr_sc; 189 vm_paddr_t addr = 0; 190 long blkcnt; 191 int dumppages = MAXDUMPPGS; 192 int error = 0; 193 int driveno; 194 int i; 195 196 debug_called(1); 197 198 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 199 200 if (!amrd_sc || !amr_sc) 201 return(ENXIO); 202 203 blkcnt = howmany(PAGE_SIZE, ap->a_secsize); 204 205 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 206 207 while (ap->a_count > 0) { 208 caddr_t va = NULL; 209 210 if ((ap->a_count / blkcnt) < dumppages) 211 dumppages = ap->a_count / blkcnt; 212 213 for (i = 0; i < dumppages; ++i) { 214 vm_paddr_t a = addr + (i * PAGE_SIZE); 215 if (is_physical_memory(a)) 216 va = pmap_kenter_temporary(trunc_page(a), i); 217 else 218 va = pmap_kenter_temporary(trunc_page(0), i); 219 } 220 221 if ((error = amr_dump_blocks(amr_sc, driveno, ap->a_blkno, (void *)va, 222 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) 223 return(error); 224 225 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0) 226 return(EINTR); 227 228 ap->a_blkno += blkcnt * dumppages; 229 ap->a_count -= blkcnt * dumppages; 230 addr += PAGE_SIZE * dumppages; 231 } 232 return (0); 233 } 234 /* 235 * Read/write routine for a buffer. Finds the proper unit, range checks 236 * arguments, and schedules the transfer. Does not wait for the transfer 237 * to complete. Multi-page transfers are supported. All I/O requests must 238 * be a multiple of a sector in length. 239 */ 240 static int 241 amrd_strategy(struct dev_strategy_args *ap) 242 { 243 cdev_t dev = ap->a_head.a_dev; 244 struct bio *bio = ap->a_bio; 245 struct buf *bp = bio->bio_buf; 246 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 247 248 /* bogus disk? */ 249 if (sc == NULL) { 250 bp->b_error = EINVAL; 251 goto bad; 252 } 253 bio->bio_driver_info = sc; 254 255 devstat_start_transaction(&sc->amrd_stats); 256 amr_submit_bio(sc->amrd_controller, bio); 257 return(0); 258 259 bad: 260 bp->b_flags |= B_ERROR; 261 262 /* 263 * Correctly set the buf to indicate a completed transfer 264 */ 265 bp->b_resid = bp->b_bcount; 266 biodone(bio); 267 return(0); 268 } 269 270 void 271 amrd_intr(struct bio *bio) 272 { 273 struct buf *bp = bio->bio_buf; 274 275 debug_called(2); 276 277 if (bp->b_flags & B_ERROR) { 278 bp->b_error = EIO; 279 debug(1, "i/o error\n"); 280 } else { 281 bp->b_resid = 0; 282 } 283 biodone(bio); 284 } 285 286 static int 287 amrd_probe(device_t dev) 288 { 289 290 debug_called(1); 291 292 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 293 return (0); 294 } 295 296 static int 297 amrd_attach(device_t dev) 298 { 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 return (0); 327 } 328 329 static int 330 amrd_detach(device_t dev) 331 { 332 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 333 334 debug_called(1); 335 336 if (sc->amrd_flags & AMRD_OPEN) 337 return(EBUSY); 338 339 devstat_remove_entry(&sc->amrd_stats); 340 disk_destroy(&sc->amrd_disk); 341 return(0); 342 } 343 344