amr_disk.c revision 111441
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 * 57 * $FreeBSD: head/sys/dev/amr/amr_disk.c 111441 2003-02-24 21:49:27Z phk $ 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 <dev/amr/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 <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/* 148 * Read/write routine for a buffer. Finds the proper unit, range checks 149 * arguments, and schedules the transfer. Does not wait for the transfer 150 * to complete. Multi-page transfers are supported. All I/O requests must 151 * be a multiple of a sector in length. 152 */ 153static void 154amrd_strategy(struct bio *bio) 155{ 156 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_disk->d_drv1; 157 158 /* bogus disk? */ 159 if (sc == NULL) { 160 bio->bio_error = EINVAL; 161 goto bad; 162 } 163 164 devstat_start_transaction(&sc->amrd_stats); 165 amr_submit_bio(sc->amrd_controller, bio); 166 return; 167 168 bad: 169 bio->bio_flags |= BIO_ERROR; 170 171 /* 172 * Correctly set the buf to indicate a completed transfer 173 */ 174 bio->bio_resid = bio->bio_bcount; 175 biodone(bio); 176 return; 177} 178 179void 180amrd_intr(void *data) 181{ 182 struct bio *bio = (struct bio *)data; 183 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_disk->d_drv1; 184 185 debug_called(2); 186 187 if (bio->bio_flags & BIO_ERROR) { 188 bio->bio_error = EIO; 189 debug(1, "i/o error\n"); 190 } else { 191 bio->bio_resid = 0; 192 } 193 194 AMR_BIO_FINISH(bio); 195} 196 197static int 198amrd_probe(device_t dev) 199{ 200 201 debug_called(1); 202 203 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 204 return (0); 205} 206 207static int 208amrd_attach(device_t dev) 209{ 210 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 211 device_t parent; 212 213 debug_called(1); 214 215 parent = device_get_parent(dev); 216 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 217 sc->amrd_unit = device_get_unit(dev); 218 sc->amrd_drive = device_get_ivars(dev); 219 sc->amrd_dev = dev; 220 221 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 222 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 223 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 224 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 225 226 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, 227 DEVSTAT_NO_ORDERED_TAGS, 228 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 229 DEVSTAT_PRIORITY_ARRAY); 230 231 sc->amrd_disk.d_drv1 = sc; 232 sc->amrd_disk.d_maxsize = (AMR_NSEG - 1) * PAGE_SIZE; 233 sc->amrd_disk.d_open = amrd_open; 234 sc->amrd_disk.d_strategy = amrd_strategy; 235 sc->amrd_disk.d_name = "amrd"; 236 disk_create(sc->amrd_unit, &sc->amrd_disk, 0, NULL, NULL); 237#ifdef FREEBSD_4 238 disks_registered++; 239#endif 240 241 return (0); 242} 243 244static int 245amrd_detach(device_t dev) 246{ 247 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 248 249 debug_called(1); 250 251 if (sc->amrd_disk.d_flags & DISKFLAG_OPEN) 252 return(EBUSY); 253 254 devstat_remove_entry(&sc->amrd_stats); 255#ifdef FREEBSD_4 256 if (--disks_registered == 0) 257 cdevsw_remove(&amrddisk_cdevsw); 258#else 259 disk_destroy(&sc->amrd_disk); 260#endif 261 return(0); 262} 263 264