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 1.12 2006/09/10 01:26:35 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 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 #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */ 133 struct disklabel *label; 134 #endif 135 136 debug_called(1); 137 138 if (sc == NULL) 139 return (ENXIO); 140 141 /* controller not active? */ 142 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 143 return(ENXIO); 144 145 #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */ 146 label = &sc->amrd_disk.d_label; 147 bzero(label, sizeof(*label)); 148 label->d_type = DTYPE_SCSI; 149 label->d_secsize = AMR_BLKSIZE; 150 label->d_nsectors = sc->amrd_drive->al_sectors; 151 label->d_ntracks = sc->amrd_drive->al_heads; 152 label->d_ncylinders = sc->amrd_drive->al_cylinders; 153 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 154 label->d_secperunit = sc->amrd_drive->al_size; 155 #else 156 sc->amrd_disk.d_sectorsize = AMR_BLKSIZE; 157 sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; 158 sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors; 159 sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads; 160 #endif 161 162 sc->amrd_flags |= AMRD_OPEN; 163 return (0); 164 } 165 166 static int 167 amrd_close(struct dev_close_args *ap) 168 { 169 cdev_t dev = ap->a_head.a_dev; 170 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 171 172 debug_called(1); 173 174 if (sc == NULL) 175 return (ENXIO); 176 sc->amrd_flags &= ~AMRD_OPEN; 177 return (0); 178 } 179 180 static int 181 amrd_ioctl(struct dev_ioctl_args *ap) 182 { 183 return (ENOTTY); 184 } 185 186 187 /******************************************************************************** 188 * System crashdump support 189 */ 190 int 191 amrd_dump(struct dev_dump_args *ap) 192 { 193 cdev_t dev = ap->a_head.a_dev; 194 struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; 195 struct amr_softc *amr_sc; 196 vm_paddr_t addr = 0; 197 long blkcnt; 198 int dumppages = MAXDUMPPGS; 199 int error = 0; 200 int driveno; 201 int i; 202 203 debug_called(1); 204 205 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 206 207 if (!amrd_sc || !amr_sc) 208 return(ENXIO); 209 210 blkcnt = howmany(PAGE_SIZE, ap->a_secsize); 211 212 driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 213 214 while (ap->a_count > 0) { 215 caddr_t va = NULL; 216 217 if ((ap->a_count / blkcnt) < dumppages) 218 dumppages = ap->a_count / blkcnt; 219 220 for (i = 0; i < dumppages; ++i) { 221 vm_paddr_t a = addr + (i * PAGE_SIZE); 222 if (is_physical_memory(a)) 223 va = pmap_kenter_temporary(trunc_page(a), i); 224 else 225 va = pmap_kenter_temporary(trunc_page(0), i); 226 } 227 228 if ((error = amr_dump_blocks(amr_sc, driveno, ap->a_blkno, (void *)va, 229 (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) 230 return(error); 231 232 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0) 233 return(EINTR); 234 235 ap->a_blkno += blkcnt * dumppages; 236 ap->a_count -= blkcnt * dumppages; 237 addr += PAGE_SIZE * dumppages; 238 } 239 return (0); 240 } 241 /* 242 * Read/write routine for a buffer. Finds the proper unit, range checks 243 * arguments, and schedules the transfer. Does not wait for the transfer 244 * to complete. Multi-page transfers are supported. All I/O requests must 245 * be a multiple of a sector in length. 246 */ 247 static int 248 amrd_strategy(struct dev_strategy_args *ap) 249 { 250 cdev_t dev = ap->a_head.a_dev; 251 struct bio *bio = ap->a_bio; 252 struct buf *bp = bio->bio_buf; 253 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; 254 255 /* bogus disk? */ 256 if (sc == NULL) { 257 bp->b_error = EINVAL; 258 goto bad; 259 } 260 bio->bio_driver_info = sc; 261 262 devstat_start_transaction(&sc->amrd_stats); 263 amr_submit_bio(sc->amrd_controller, bio); 264 return(0); 265 266 bad: 267 bp->b_flags |= B_ERROR; 268 269 /* 270 * Correctly set the buf to indicate a completed transfer 271 */ 272 bp->b_resid = bp->b_bcount; 273 biodone(bio); 274 return(0); 275 } 276 277 void 278 amrd_intr(struct bio *bio) 279 { 280 struct buf *bp = bio->bio_buf; 281 282 debug_called(2); 283 284 if (bp->b_flags & B_ERROR) { 285 bp->b_error = EIO; 286 debug(1, "i/o error\n"); 287 } else { 288 bp->b_resid = 0; 289 } 290 biodone(bio); 291 } 292 293 static int 294 amrd_probe(device_t dev) 295 { 296 297 debug_called(1); 298 299 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 300 return (0); 301 } 302 303 static int 304 amrd_attach(device_t dev) 305 { 306 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 307 device_t parent; 308 309 debug_called(1); 310 311 parent = device_get_parent(dev); 312 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 313 sc->amrd_unit = device_get_unit(dev); 314 sc->amrd_drive = device_get_ivars(dev); 315 sc->amrd_dev = dev; 316 317 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 318 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 319 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 320 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 321 322 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 323 DEVSTAT_NO_ORDERED_TAGS, 324 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 325 DEVSTAT_PRIORITY_ARRAY); 326 327 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_ops); 328 sc->amrd_dev_t->si_drv1 = sc; 329 330 /* set maximum I/O size to match the maximum s/g size */ 331 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; 332 333 return (0); 334 } 335 336 static int 337 amrd_detach(device_t dev) 338 { 339 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 340 341 debug_called(1); 342 343 if (sc->amrd_flags & AMRD_OPEN) 344 return(EBUSY); 345 346 devstat_remove_entry(&sc->amrd_stats); 347 disk_destroy(&sc->amrd_disk); 348 return(0); 349 } 350 351