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("$FreeBSD$"); 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 <sys/bio.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 92int amr_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; 114 115 debug_called(1); 116 117 if (sc == NULL) 118 return (ENXIO); 119 120 /* controller not active? */ 121 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) 122 return(ENXIO); 123 124 return (0); 125} 126/******************************************************************************** 127 * System crashdump support 128 */ 129 130static int 131amrd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 132{ 133 134 struct amrd_softc *amrd_sc; 135 struct amr_softc *amr_sc; 136 int error; 137 struct disk *dp; 138 139 dp = arg; 140 amrd_sc = (struct amrd_softc *)dp->d_drv1; 141 if (amrd_sc == NULL) 142 return(ENXIO); 143 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; 144 145 if (length > 0) { 146 int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; 147 if ((error = amr_dump_blocks(amr_sc,driveno,offset / AMR_BLKSIZE ,(void *)virtual,(int) length / AMR_BLKSIZE )) != 0) 148 return(error); 149 150 } 151 return(0); 152} 153 154/* 155 * Read/write routine for a buffer. Finds the proper unit, range checks 156 * arguments, and schedules the transfer. Does not wait for the transfer 157 * to complete. Multi-page transfers are supported. All I/O requests must 158 * be a multiple of a sector in length. 159 */ 160static void 161amrd_strategy(struct bio *bio) 162{ 163 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_disk->d_drv1; 164 165 /* bogus disk? */ 166 if (sc == NULL) { 167 bio->bio_error = EINVAL; 168 goto bad; 169 } 170 171 amr_submit_bio(sc->amrd_controller, bio); 172 return; 173 174 bad: 175 bio->bio_flags |= BIO_ERROR; 176 177 /* 178 * Correctly set the buf to indicate a completed transfer 179 */ 180 bio->bio_resid = bio->bio_bcount; 181 biodone(bio); 182 return; 183} 184 185void 186amrd_intr(void *data) 187{ 188 struct bio *bio = (struct bio *)data; 189 190 debug_called(2); 191 192 if (bio->bio_flags & BIO_ERROR) { 193 bio->bio_error = EIO; 194 debug(1, "i/o error\n"); 195 } else { 196 bio->bio_resid = 0; 197 } 198 199 biodone(bio); 200} 201 202static int 203amrd_probe(device_t dev) 204{ 205 206 debug_called(1); 207 208 device_set_desc(dev, "LSILogic MegaRAID logical drive"); 209 return (0); 210} 211 212static int 213amrd_attach(device_t dev) 214{ 215 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 216 device_t parent; 217 218 debug_called(1); 219 220 parent = device_get_parent(dev); 221 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); 222 sc->amrd_unit = device_get_unit(dev); 223 sc->amrd_drive = device_get_ivars(dev); 224 sc->amrd_dev = dev; 225 226 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 227 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), 228 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, 229 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); 230 231 sc->amrd_disk = disk_alloc(); 232 sc->amrd_disk->d_drv1 = sc; 233 sc->amrd_disk->d_maxsize = (AMR_NSEG - 1) * PAGE_SIZE; 234 sc->amrd_disk->d_open = amrd_open; 235 sc->amrd_disk->d_strategy = amrd_strategy; 236 sc->amrd_disk->d_name = "amrd"; 237 sc->amrd_disk->d_dump = (dumper_t *)amrd_dump; 238 sc->amrd_disk->d_unit = sc->amrd_unit; 239 sc->amrd_disk->d_flags = DISKFLAG_CANFLUSHCACHE; 240 sc->amrd_disk->d_sectorsize = AMR_BLKSIZE; 241 sc->amrd_disk->d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; 242 sc->amrd_disk->d_fwsectors = sc->amrd_drive->al_sectors; 243 sc->amrd_disk->d_fwheads = sc->amrd_drive->al_heads; 244 disk_create(sc->amrd_disk, DISK_VERSION); 245 246 return (0); 247} 248 249static int 250amrd_detach(device_t dev) 251{ 252 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); 253 254 debug_called(1); 255 256 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN) 257 return(EBUSY); 258 259#ifdef FREEBSD_4 260 if (--amr_disks_registered == 0) 261 cdevsw_remove(&amrddisk_cdevsw); 262#else 263 disk_destroy(sc->amrd_disk); 264#endif 265 return(0); 266} 267 268