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 uint64_t sectors; 97 uint32_t secsize; 98 char *state; 99 100 sc = device_get_softc(dev); 101 ld_info = device_get_ivars(dev); 102 103 sc->ld_dev = dev; 104 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id; 105 sc->ld_unit = device_get_unit(dev); 106 sc->ld_info = ld_info; 107 sc->ld_controller = device_get_softc(device_get_parent(dev)); 108 sc->ld_flags = 0; 109 110 sectors = ld_info->size; 111 secsize = MFI_SECTOR_LEN; 112 mtx_lock(&sc->ld_controller->mfi_io_lock); 113 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 114 mtx_unlock(&sc->ld_controller->mfi_io_lock); 115 116 switch (ld_info->ld_config.params.state) { 117 case MFI_LD_STATE_OFFLINE: 118 state = "offline"; 119 break; 120 case MFI_LD_STATE_PARTIALLY_DEGRADED: 121 state = "partially degraded"; 122 break; 123 case MFI_LD_STATE_DEGRADED: 124 state = "degraded"; 125 break; 126 case MFI_LD_STATE_OPTIMAL: 127 state = "optimal"; 128 break; 129 default: 130 state = "unknown"; 131 break; 132 } 133 134 if ( strlen(ld_info->ld_config.properties.name) == 0 ) { 135 device_printf(dev, 136 "%juMB (%ju sectors) RAID volume (no label) is %s\n", 137 sectors / (1024 * 1024 / secsize), sectors, state); 138 } else { 139 device_printf(dev, 140 "%juMB (%ju sectors) RAID volume '%s' is %s\n", 141 sectors / (1024 * 1024 / secsize), sectors, 142 ld_info->ld_config.properties.name, state); 143 } 144 145 sc->ld_disk = disk_alloc(); 146 sc->ld_disk->d_drv1 = sc; 147 sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize, 148 (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE); 149 sc->ld_disk->d_name = "mfid"; 150 sc->ld_disk->d_open = mfi_disk_open; 151 sc->ld_disk->d_close = mfi_disk_close; 152 sc->ld_disk->d_strategy = mfi_disk_strategy; 153 sc->ld_disk->d_dump = mfi_disk_dump; 154 sc->ld_disk->d_unit = sc->ld_unit; 155 sc->ld_disk->d_sectorsize = secsize; 156 sc->ld_disk->d_mediasize = sectors * secsize; 157 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 158 sc->ld_disk->d_fwheads = 255; 159 sc->ld_disk->d_fwsectors = 63; 160 } else { 161 sc->ld_disk->d_fwheads = 64; 162 sc->ld_disk->d_fwsectors = 32; 163 } 164 disk_create(sc->ld_disk, DISK_VERSION); 165 166 return (0); 167 } 168 169 static int 170 mfi_disk_detach(device_t dev) 171 { 172 struct mfi_disk *sc; 173 174 sc = device_get_softc(dev); 175 176 mtx_lock(&sc->ld_controller->mfi_io_lock); 177 if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) || 178 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) && 179 (sc->ld_controller->mfi_keep_deleted_volumes || 180 sc->ld_controller->mfi_detaching)) { 181 mtx_unlock(&sc->ld_controller->mfi_io_lock); 182 return (EBUSY); 183 } 184 mtx_unlock(&sc->ld_controller->mfi_io_lock); 185 186 disk_destroy(sc->ld_disk); 187 mtx_lock(&sc->ld_controller->mfi_io_lock); 188 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 189 mtx_unlock(&sc->ld_controller->mfi_io_lock); 190 free(sc->ld_info, M_MFIBUF); 191 return (0); 192 } 193 194 static int 195 mfi_disk_open(struct disk *dp) 196 { 197 struct mfi_disk *sc; 198 int error; 199 200 sc = dp->d_drv1; 201 mtx_lock(&sc->ld_controller->mfi_io_lock); 202 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED) 203 error = ENXIO; 204 else { 205 sc->ld_flags |= MFI_DISK_FLAGS_OPEN; 206 error = 0; 207 } 208 mtx_unlock(&sc->ld_controller->mfi_io_lock); 209 210 return (error); 211 } 212 213 static int 214 mfi_disk_close(struct disk *dp) 215 { 216 struct mfi_disk *sc; 217 218 sc = dp->d_drv1; 219 mtx_lock(&sc->ld_controller->mfi_io_lock); 220 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN; 221 mtx_unlock(&sc->ld_controller->mfi_io_lock); 222 223 return (0); 224 } 225 226 int 227 mfi_disk_disable(struct mfi_disk *sc) 228 { 229 230 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); 231 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) { 232 if (sc->ld_controller->mfi_delete_busy_volumes) 233 return (0); 234 device_printf(sc->ld_dev, "Unable to delete busy ld device\n"); 235 return (EBUSY); 236 } 237 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED; 238 return (0); 239 } 240 241 void 242 mfi_disk_enable(struct mfi_disk *sc) 243 { 244 245 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); 246 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED; 247 } 248 249 static void 250 mfi_disk_strategy(struct bio *bio) 251 { 252 struct mfi_disk *sc; 253 struct mfi_softc *controller; 254 255 sc = bio->bio_disk->d_drv1; 256 controller = sc->ld_controller; 257 258 if (sc == NULL) { 259 bio->bio_error = EINVAL; 260 bio->bio_flags |= BIO_ERROR; 261 bio->bio_resid = bio->bio_bcount; 262 biodone(bio); 263 return; 264 } 265 266 if (controller->adpreset) { 267 bio->bio_error = EBUSY; 268 return; 269 } 270 271 if (controller->hw_crit_error) { 272 bio->bio_error = EBUSY; 273 return; 274 } 275 276 if (controller->issuepend_done == 0) { 277 bio->bio_error = EBUSY; 278 return; 279 } 280 281 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 282 /* Mark it as LD IO */ 283 bio->bio_driver2 = (void *)MFI_LD_IO; 284 mtx_lock(&controller->mfi_io_lock); 285 mfi_enqueue_bio(controller, bio); 286 mfi_startio(controller); 287 mtx_unlock(&controller->mfi_io_lock); 288 return; 289 } 290 291 void 292 mfi_disk_complete(struct bio *bio) 293 { 294 struct mfi_disk *sc; 295 struct mfi_frame_header *hdr; 296 297 sc = bio->bio_disk->d_drv1; 298 hdr = bio->bio_driver1; 299 300 if (bio->bio_flags & BIO_ERROR) { 301 bio->bio_resid = bio->bio_bcount; 302 if (bio->bio_error == 0) 303 bio->bio_error = EIO; 304 disk_err(bio, "hard error", -1, 1); 305 } else { 306 bio->bio_resid = 0; 307 } 308 biodone(bio); 309 } 310 311 static int 312 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 313 { 314 struct mfi_disk *sc; 315 struct mfi_softc *parent_sc; 316 struct disk *dp; 317 int error; 318 319 dp = arg; 320 sc = dp->d_drv1; 321 parent_sc = sc->ld_controller; 322 323 if (len > 0) { 324 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 325 MFI_SECTOR_LEN, virt, len)) != 0) 326 return (error); 327 } else { 328 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 329 } 330 331 return (0); 332 } 333