mfi_disk.c revision 163398
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: head/sys/dev/mfi/mfi_disk.c 163398 2006-10-16 04:18:38Z scottl $"); 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/uio.h> 39 40#include <sys/bio.h> 41#include <sys/bus.h> 42#include <sys/conf.h> 43#include <sys/disk.h> 44#include <geom/geom_disk.h> 45 46#include <vm/vm.h> 47#include <vm/pmap.h> 48 49#include <machine/md_var.h> 50#include <machine/bus.h> 51#include <sys/rman.h> 52 53#include <dev/mfi/mfireg.h> 54#include <dev/mfi/mfi_ioctl.h> 55#include <dev/mfi/mfivar.h> 56 57static int mfi_disk_probe(device_t dev); 58static int mfi_disk_attach(device_t dev); 59static int mfi_disk_detach(device_t dev); 60 61static disk_open_t mfi_disk_open; 62static disk_close_t mfi_disk_close; 63static disk_strategy_t mfi_disk_strategy; 64static dumper_t mfi_disk_dump; 65 66static devclass_t mfi_disk_devclass; 67 68struct mfi_disk { 69 device_t ld_dev; 70 int ld_id; 71 int ld_unit; 72 struct mfi_softc *ld_controller; 73 struct mfi_ld *ld_ld; 74 struct disk *ld_disk; 75}; 76 77static device_method_t mfi_disk_methods[] = { 78 DEVMETHOD(device_probe, mfi_disk_probe), 79 DEVMETHOD(device_attach, mfi_disk_attach), 80 DEVMETHOD(device_detach, mfi_disk_detach), 81 { 0, 0 } 82}; 83 84static driver_t mfi_disk_driver = { 85 "mfid", 86 mfi_disk_methods, 87 sizeof(struct mfi_disk) 88}; 89 90DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); 91 92static int 93mfi_disk_probe(device_t dev) 94{ 95 96 return (0); 97} 98 99static int 100mfi_disk_attach(device_t dev) 101{ 102 struct mfi_disk *sc; 103 struct mfi_ld *ld; 104 uint64_t sectors; 105 uint32_t secsize; 106 char *state; 107 108 sc = device_get_softc(dev); 109 ld = device_get_ivars(dev); 110 111 sc->ld_dev = dev; 112 sc->ld_id = ld->ld_id; 113 sc->ld_unit = device_get_unit(dev); 114 sc->ld_ld = device_get_ivars(dev); 115 sc->ld_controller = device_get_softc(device_get_parent(dev)); 116 117 sectors = ld->ld_info->size; 118 secsize = MFI_SECTOR_LEN; 119 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, ld, ld_link); 120 121 switch (ld->ld_info->ld_config.params.state) { 122 case MFI_LD_STATE_OFFLINE: 123 state = "offline"; 124 break; 125 case MFI_LD_STATE_PARTIALLY_DEGRADED: 126 state = "partially degraded"; 127 break; 128 case MFI_LD_STATE_DEGRADED: 129 state = "degraded"; 130 break; 131 case MFI_LD_STATE_OPTIMAL: 132 state = "optimal"; 133 break; 134 default: 135 state = "unknown"; 136 break; 137 } 138 device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n", 139 sectors / (1024 * 1024 / secsize), sectors, 140 ld->ld_info->ld_config.properties.name, 141 state); 142 143 sc->ld_disk = disk_alloc(); 144 sc->ld_disk->d_drv1 = sc; 145 sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize; 146 sc->ld_disk->d_name = "mfid"; 147 sc->ld_disk->d_open = mfi_disk_open; 148 sc->ld_disk->d_close = mfi_disk_close; 149 sc->ld_disk->d_strategy = mfi_disk_strategy; 150 sc->ld_disk->d_dump = mfi_disk_dump; 151 sc->ld_disk->d_unit = sc->ld_unit; 152 sc->ld_disk->d_sectorsize = secsize; 153 sc->ld_disk->d_mediasize = sectors * secsize; 154 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 155 sc->ld_disk->d_fwheads = 255; 156 sc->ld_disk->d_fwsectors = 63; 157 } else { 158 sc->ld_disk->d_fwheads = 64; 159 sc->ld_disk->d_fwsectors = 32; 160 } 161 disk_create(sc->ld_disk, DISK_VERSION); 162 163 return (0); 164} 165 166static int 167mfi_disk_detach(device_t dev) 168{ 169 struct mfi_disk *sc; 170 171 sc = device_get_softc(dev); 172 173 if (sc->ld_disk->d_flags & DISKFLAG_OPEN) 174 return (EBUSY); 175 176 disk_destroy(sc->ld_disk); 177 return (0); 178} 179 180static int 181mfi_disk_open(struct disk *dp) 182{ 183 184 return (0); 185} 186 187static int 188mfi_disk_close(struct disk *dp) 189{ 190 191 return (0); 192} 193 194static void 195mfi_disk_strategy(struct bio *bio) 196{ 197 struct mfi_disk *sc; 198 struct mfi_softc *controller; 199 200 sc = bio->bio_disk->d_drv1; 201 202 if (sc == NULL) { 203 bio->bio_error = EINVAL; 204 bio->bio_flags |= BIO_ERROR; 205 bio->bio_resid = bio->bio_bcount; 206 biodone(bio); 207 return; 208 } 209 210 controller = sc->ld_controller; 211 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 212 mtx_lock(&controller->mfi_io_lock); 213 mfi_enqueue_bio(controller, bio); 214 mfi_startio(controller); 215 mtx_unlock(&controller->mfi_io_lock); 216 return; 217} 218 219void 220mfi_disk_complete(struct bio *bio) 221{ 222 struct mfi_disk *sc; 223 struct mfi_frame_header *hdr; 224 225 sc = bio->bio_disk->d_drv1; 226 hdr = bio->bio_driver1; 227 228 if (bio->bio_flags & BIO_ERROR) { 229 if (bio->bio_error == 0) 230 bio->bio_error = EIO; 231 disk_err(bio, "hard error", -1, 1); 232 } else { 233 bio->bio_resid = 0; 234 } 235 biodone(bio); 236} 237 238static int 239mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 240{ 241 struct mfi_disk *sc; 242 struct mfi_softc *parent_sc; 243 struct disk *dp; 244 int error; 245 246 dp = arg; 247 sc = dp->d_drv1; 248 parent_sc = sc->ld_controller; 249 250 if (len > 0) { 251 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 252 MFI_SECTOR_LEN, virt, len)) != 0) 253 return (error); 254 } else { 255 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 256 } 257 258 return (0); 259} 260