amr_disk.c revision 139749
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/*- 29 * Copyright (c) 2002 Eric Moore 30 * Copyright (c) 2002 LSI Logic Corporation 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. The party using or redistributing the source code and binary forms 42 * agrees to the disclaimer below and the terms and conditions set forth 43 * herein. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58#include <sys/cdefs.h> 59__FBSDID("$FreeBSD: head/sys/dev/amr/amr_disk.c 139749 2005-01-06 01:43:34Z imp $"); 60 61/* 62 * Disk driver for AMI MegaRaid controllers 63 */ 64 65#include <sys/param.h> 66#include <sys/systm.h> 67#include <sys/kernel.h> 68#include <sys/module.h> 69 70#include <dev/amr/amr_compat.h> 71#include <sys/bus.h> 72#include <sys/conf.h> 73 74#include <machine/bus.h> 75#include <sys/rman.h> 76 77#include <dev/amr/amrio.h> 78#include <dev/amr/amrreg.h> 79#include <dev/amr/amrvar.h> 80#include <dev/amr/amr_tables.h> 81 82/* prototypes */ 83static int amrd_probe(device_t dev); 84static int amrd_attach(device_t dev); 85static int amrd_detach(device_t dev); 86 87static disk_open_t amrd_open; 88static disk_strategy_t amrd_strategy; 89 90static devclass_t amrd_devclass; 91#ifdef FREEBSD_4 92static int disks_registered = 0; 93#endif 94 95static device_method_t amrd_methods[] = { 96 DEVMETHOD(device_probe, amrd_probe), 97 DEVMETHOD(device_attach, amrd_attach), 98 DEVMETHOD(device_detach, amrd_detach), 99 { 0, 0 } 100}; 101 102static driver_t amrd_driver = { 103 "amrd", 104 amrd_methods, 105 sizeof(struct amrd_softc) 106}; 107 108DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); 109 110static int 111amrd_open(struct disk *dp) 112{ 113 struct amrd_softc *sc = (struct amrd_softc *)dp->d_drv1; 114#if __FreeBSD_version < 500000 /* old buf style */ 115 struct disklabel *label; 116#endif 117 118 debug_called(1); 119 120 if (sc == NULL) 121 return (ENXIO); 122 123 /* controller not active? */ 124 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 125 return(ENXIO); 126 127#if __FreeBSD_version < 500000 /* old buf style */ 128 label = &sc->amrd_disk.d_label; 129 bzero(label, sizeof(*label)); 130 label->d_type = DTYPE_SCSI; 131 label->d_secsize = AMR_BLKSIZE; 132 label->d_nsectors = sc->amrd_drive->al_sectors; 133 label->d_ntracks = sc->amrd_drive->al_heads; 134 label->d_ncylinders = sc->amrd_drive->al_cylinders; 135 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; 136 label->d_secperunit = sc->amrd_drive->al_size; 137#else 138 sc->amrd_disk->d_sectorsize = AMR_BLKSIZE; 139 sc->amrd_disk->d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; 140 sc->amrd_disk->d_fwsectors = sc->amrd_drive->al_sectors; 141 sc->amrd_disk->d_fwheads = sc->amrd_drive->al_heads; 142#endif 143 144 return (0); 145} 146/******************************************************************************** 147 * System crashdump support 148 */ 149 150static int 151amrd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 152{ 153 154 struct amrd_softc *amrd_sc; 155 struct amr_softc *amr_sc; 156 int error; 157 struct disk *dp; 158 159 dp = arg; 160 amrd_sc = (struct amrd_softc *)dp->d_drv1; 161 if (amrd_sc == NULL) 162 return(ENXIO); 163 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 164 165 if (length > 0) { 166 int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 167 if ((error = amr_dump_blocks(amr_sc,driveno,offset / AMR_BLKSIZE ,(void *)virtual,(int) length / AMR_BLKSIZE )) != 0) 168 return(error); 169 170 } 171 return(0); 172} 173 174/* 175 * Read/write routine for a buffer. Finds the proper unit, range checks 176 * arguments, and schedules the transfer. Does not wait for the transfer 177 * to complete. Multi-page transfers are supported. All I/O requests must 178 * be a multiple of a sector in length. 179 */ 180static void 181amrd_strategy(struct bio *bio) 182{ 183 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_disk->d_drv1; 184 185 /* bogus disk? */ 186 if (sc == NULL) { 187 bio->bio_error = EINVAL; 188 goto bad; 189 } 190 191 amr_submit_bio(sc->amrd_controller, bio); 192 return; 193 194 bad: 195 bio->bio_flags |= BIO_ERROR; 196 197 /* 198 * Correctly set the buf to indicate a completed transfer 199 */ 200 bio->bio_resid = bio->bio_bcount; 201 biodone(bio); 202 return; 203} 204 205void 206amrd_intr(void *data) 207{ 208 struct bio *bio = (struct bio *)data; 209 210 debug_called(2); 211 212 if (bio->bio_flags & BIO_ERROR) { 213 bio->bio_error = EIO; 214 debug(1, "i/o error\n"); 215 } else { 216 bio->bio_resid = 0; 217 } 218 219 AMR_BIO_FINISH(bio); 220} 221 222static int 223amrd_probe(device_t dev) 224{ 225 226 debug_called(1); 227 228 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 229 return (0); 230} 231 232static int 233amrd_attach(device_t dev) 234{ 235 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 236 device_t parent; 237 238 debug_called(1); 239 240 parent = device_get_parent(dev); 241 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 242 sc->amrd_unit = device_get_unit(dev); 243 sc->amrd_drive = device_get_ivars(dev); 244 sc->amrd_dev = dev; 245 246 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 247 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 248 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 249 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 250 251 sc->amrd_disk = disk_alloc(); 252 sc->amrd_disk->d_drv1 = sc; 253 sc->amrd_disk->d_maxsize = (AMR_NSEG - 1) * PAGE_SIZE; 254 sc->amrd_disk->d_open = amrd_open; 255 sc->amrd_disk->d_strategy = amrd_strategy; 256 sc->amrd_disk->d_name = "amrd"; 257 sc->amrd_disk->d_dump = (dumper_t *)amrd_dump; 258 sc->amrd_disk->d_unit = sc->amrd_unit; 259 sc->amrd_disk->d_flags = DISKFLAG_NEEDSGIANT; 260 disk_create(sc->amrd_disk, DISK_VERSION); 261#ifdef FREEBSD_4 262 disks_registered++; 263#endif 264 265 return (0); 266} 267 268static int 269amrd_detach(device_t dev) 270{ 271 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 272 273 debug_called(1); 274 275 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN) 276 return(EBUSY); 277 278#ifdef FREEBSD_4 279 if (--disks_registered == 0) 280 cdevsw_remove(&amrddisk_cdevsw); 281#else 282 disk_destroy(sc->amrd_disk); 283#endif 284 return(0); 285} 286 287