1 /*- 2 * Copyright (c) 2006 IronPort Systems 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_mfi.h" 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/selinfo.h> 36 #include <sys/module.h> 37 #include <sys/malloc.h> 38 #include <sys/sysctl.h> 39 #include <sys/uio.h> 40 41 #include <sys/bio.h> 42 #include <sys/bus.h> 43 #include <sys/conf.h> 44 #include <sys/disk.h> 45 #include <geom/geom_disk.h> 46 47 #include <vm/vm.h> 48 #include <vm/pmap.h> 49 50 #include <machine/md_var.h> 51 #include <machine/bus.h> 52 #include <sys/rman.h> 53 54 #include <dev/mfi/mfireg.h> 55 #include <dev/mfi/mfi_ioctl.h> 56 #include <dev/mfi/mfivar.h> 57 58 static int mfi_disk_probe(device_t dev); 59 static int mfi_disk_attach(device_t dev); 60 static int mfi_disk_detach(device_t dev); 61 62 static disk_open_t mfi_disk_open; 63 static disk_close_t mfi_disk_close; 64 static disk_strategy_t mfi_disk_strategy; 65 static dumper_t mfi_disk_dump; 66 67 static devclass_t mfi_disk_devclass; 68 69 static device_method_t mfi_disk_methods[] = { 70 DEVMETHOD(device_probe, mfi_disk_probe), 71 DEVMETHOD(device_attach, mfi_disk_attach), 72 DEVMETHOD(device_detach, mfi_disk_detach), 73 { 0, 0 } 74 }; 75 76 static driver_t mfi_disk_driver = { 77 "mfid", 78 mfi_disk_methods, 79 sizeof(struct mfi_disk) 80 }; 81 82 DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); 83 84 static int 85 mfi_disk_probe(device_t dev) 86 { 87 88 return (0); 89 } 90 91 static int 92 mfi_disk_attach(device_t dev) 93 { 94 struct mfi_disk *sc; 95 struct mfi_ld_info *ld_info; 96 struct mfi_disk_pending *ld_pend; 97 uint64_t sectors; 98 uint32_t secsize; 99 char *state; 100 101 sc = device_get_softc(dev); 102 ld_info = device_get_ivars(dev); 103 104 sc->ld_dev = dev; 105 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id; 106 sc->ld_unit = device_get_unit(dev); 107 sc->ld_info = ld_info; 108 sc->ld_controller = device_get_softc(device_get_parent(dev)); 109 sc->ld_flags = 0; 110 111 sectors = ld_info->size; 112 secsize = MFI_SECTOR_LEN; 113 mtx_lock(&sc->ld_controller->mfi_io_lock); 114 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 115 TAILQ_FOREACH(ld_pend, &sc->ld_controller->mfi_ld_pend_tqh, 116 ld_link) { 117 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_pend_tqh, 118 ld_pend, ld_link); 119 free(ld_pend, M_MFIBUF); 120 break; 121 } 122 mtx_unlock(&sc->ld_controller->mfi_io_lock); 123 124 switch (ld_info->ld_config.params.state) { 125 case MFI_LD_STATE_OFFLINE: 126 state = "offline"; 127 break; 128 case MFI_LD_STATE_PARTIALLY_DEGRADED: 129 state = "partially degraded"; 130 break; 131 case MFI_LD_STATE_DEGRADED: 132 state = "degraded"; 133 break; 134 case MFI_LD_STATE_OPTIMAL: 135 state = "optimal"; 136 break; 137 default: 138 state = "unknown"; 139 break; 140 } 141 142 if ( strlen(ld_info->ld_config.properties.name) == 0 ) { 143 device_printf(dev, 144 "%juMB (%ju sectors) RAID volume (no label) is %s\n", 145 sectors / (1024 * 1024 / secsize), sectors, state); 146 } else { 147 device_printf(dev, 148 "%juMB (%ju sectors) RAID volume '%s' is %s\n", 149 sectors / (1024 * 1024 / secsize), sectors, 150 ld_info->ld_config.properties.name, state); 151 } 152 153 sc->ld_disk = disk_alloc(); 154 sc->ld_disk->d_drv1 = sc; 155 sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize, 156 (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE); 157 sc->ld_disk->d_name = "mfid"; 158 sc->ld_disk->d_open = mfi_disk_open; 159 sc->ld_disk->d_close = mfi_disk_close; 160 sc->ld_disk->d_strategy = mfi_disk_strategy; 161 sc->ld_disk->d_dump = mfi_disk_dump; 162 sc->ld_disk->d_unit = sc->ld_unit; 163 sc->ld_disk->d_sectorsize = secsize; 164 sc->ld_disk->d_mediasize = sectors * secsize; 165 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 166 sc->ld_disk->d_fwheads = 255; 167 sc->ld_disk->d_fwsectors = 63; 168 } else { 169 sc->ld_disk->d_fwheads = 64; 170 sc->ld_disk->d_fwsectors = 32; 171 } 172 sc->ld_disk->d_flags = DISKFLAG_UNMAPPED_BIO; 173 disk_create(sc->ld_disk, DISK_VERSION); 174 175 return (0); 176 } 177 178 static int 179 mfi_disk_detach(device_t dev) 180 { 181 struct mfi_disk *sc; 182 183 sc = device_get_softc(dev); 184 185 mtx_lock(&sc->ld_controller->mfi_io_lock); 186 if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) || 187 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) && 188 (sc->ld_controller->mfi_keep_deleted_volumes || 189 sc->ld_controller->mfi_detaching)) { 190 mtx_unlock(&sc->ld_controller->mfi_io_lock); 191 return (EBUSY); 192 } 193 mtx_unlock(&sc->ld_controller->mfi_io_lock); 194 195 disk_destroy(sc->ld_disk); 196 mtx_lock(&sc->ld_controller->mfi_io_lock); 197 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 198 mtx_unlock(&sc->ld_controller->mfi_io_lock); 199 free(sc->ld_info, M_MFIBUF); 200 return (0); 201 } 202 203 static int 204 mfi_disk_open(struct disk *dp) 205 { 206 struct mfi_disk *sc; 207 int error; 208 209 sc = dp->d_drv1; 210 mtx_lock(&sc->ld_controller->mfi_io_lock); 211 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED) 212 error = ENXIO; 213 else { 214 sc->ld_flags |= MFI_DISK_FLAGS_OPEN; 215 error = 0; 216 } 217 mtx_unlock(&sc->ld_controller->mfi_io_lock); 218 219 return (error); 220 } 221 222 static int 223 mfi_disk_close(struct disk *dp) 224 { 225 struct mfi_disk *sc; 226 227 sc = dp->d_drv1; 228 mtx_lock(&sc->ld_controller->mfi_io_lock); 229 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN; 230 mtx_unlock(&sc->ld_controller->mfi_io_lock); 231 232 return (0); 233 } 234 235 int 236 mfi_disk_disable(struct mfi_disk *sc) 237 { 238 239 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); 240 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) { 241 if (sc->ld_controller->mfi_delete_busy_volumes) 242 return (0); 243 device_printf(sc->ld_dev, "Unable to delete busy ld device\n"); 244 return (EBUSY); 245 } 246 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED; 247 return (0); 248 } 249 250 void 251 mfi_disk_enable(struct mfi_disk *sc) 252 { 253 254 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); 255 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED; 256 } 257 258 static void 259 mfi_disk_strategy(struct bio *bio) 260 { 261 struct mfi_disk *sc; 262 struct mfi_softc *controller; 263 264 sc = bio->bio_disk->d_drv1; 265 266 if (sc == NULL) { 267 bio->bio_error = EINVAL; 268 bio->bio_flags |= BIO_ERROR; 269 bio->bio_resid = bio->bio_bcount; 270 biodone(bio); 271 return; 272 } 273 274 controller = sc->ld_controller; 275 if (controller->adpreset) { 276 bio->bio_error = EBUSY; 277 return; 278 } 279 280 if (controller->hw_crit_error) { 281 bio->bio_error = EBUSY; 282 return; 283 } 284 285 if (controller->issuepend_done == 0) { 286 bio->bio_error = EBUSY; 287 return; 288 } 289 290 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 291 /* Mark it as LD IO */ 292 bio->bio_driver2 = (void *)MFI_LD_IO; 293 mtx_lock(&controller->mfi_io_lock); 294 mfi_enqueue_bio(controller, bio); 295 mfi_startio(controller); 296 mtx_unlock(&controller->mfi_io_lock); 297 return; 298 } 299 300 void 301 mfi_disk_complete(struct bio *bio) 302 { 303 struct mfi_disk *sc; 304 struct mfi_frame_header *hdr; 305 306 sc = bio->bio_disk->d_drv1; 307 hdr = bio->bio_driver1; 308 309 if (bio->bio_flags & BIO_ERROR) { 310 bio->bio_resid = bio->bio_bcount; 311 if (bio->bio_error == 0) 312 bio->bio_error = EIO; 313 disk_err(bio, "hard error", -1, 1); 314 } else { 315 bio->bio_resid = 0; 316 } 317 biodone(bio); 318 } 319 320 static int 321 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 322 { 323 struct mfi_disk *sc; 324 struct mfi_softc *parent_sc; 325 struct disk *dp; 326 int error; 327 328 dp = arg; 329 sc = dp->d_drv1; 330 parent_sc = sc->ld_controller; 331 332 if (len > 0) { 333 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 334 MFI_SECTOR_LEN, virt, len)) != 0) 335 return (error); 336 } else { 337 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 338 } 339 340 return (0); 341 } 342