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/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 57 static int mfi_disk_probe(device_t dev); 58 static int mfi_disk_attach(device_t dev); 59 static int mfi_disk_detach(device_t dev); 60 61 static disk_open_t mfi_disk_open; 62 static disk_close_t mfi_disk_close; 63 static disk_strategy_t mfi_disk_strategy; 64 static dumper_t mfi_disk_dump; 65 66 static devclass_t mfi_disk_devclass; 67 68 struct 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 77 static 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 84 static driver_t mfi_disk_driver = { 85 "mfid", 86 mfi_disk_methods, 87 sizeof(struct mfi_disk) 88 }; 89 90 DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); 91 92 static int 93 mfi_disk_probe(device_t dev) 94 { 95 96 return (0); 97 } 98 99 static int 100 mfi_disk_attach(device_t dev) 101 { 102 struct mfi_disk *sc; 103 struct mfi_ld *ld; 104 uint64_t sectors; 105 uint32_t secsize; 106 107 sc = device_get_softc(dev); 108 ld = device_get_ivars(dev); 109 110 sc->ld_dev = dev; 111 sc->ld_id = ld->ld_id; 112 sc->ld_unit = device_get_unit(dev); 113 sc->ld_ld = device_get_ivars(dev); 114 sc->ld_controller = device_get_softc(device_get_parent(dev)); 115 116 sectors = sc->ld_ld->ld_sectors; 117 secsize = sc->ld_ld->ld_secsize; 118 if (secsize != MFI_SECTOR_LEN) { 119 device_printf(sc->ld_dev, "Reported sector length %d is not " 120 "512, aborting\n", secsize); 121 free(sc->ld_ld, M_MFIBUF); 122 return (EINVAL); 123 } 124 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, ld, ld_link); 125 126 device_printf(dev, "%juMB (%ju sectors) RAID\n", 127 sectors / (1024 * 1024 / secsize), sectors); 128 129 sc->ld_disk = disk_alloc(); 130 sc->ld_disk->d_drv1 = sc; 131 sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize; 132 sc->ld_disk->d_name = "mfid"; 133 sc->ld_disk->d_open = mfi_disk_open; 134 sc->ld_disk->d_close = mfi_disk_close; 135 sc->ld_disk->d_strategy = mfi_disk_strategy; 136 sc->ld_disk->d_dump = mfi_disk_dump; 137 sc->ld_disk->d_unit = sc->ld_unit; 138 sc->ld_disk->d_sectorsize = secsize; 139 sc->ld_disk->d_mediasize = sectors * secsize; 140 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 141 sc->ld_disk->d_fwheads = 255; 142 sc->ld_disk->d_fwsectors = 63; 143 } else { 144 sc->ld_disk->d_fwheads = 64; 145 sc->ld_disk->d_fwsectors = 32; 146 } 147 disk_create(sc->ld_disk, DISK_VERSION); 148 149 return (0); 150 } 151 152 static int 153 mfi_disk_detach(device_t dev) 154 { 155 struct mfi_disk *sc; 156 157 sc = device_get_softc(dev); 158 159 if (sc->ld_disk->d_flags & DISKFLAG_OPEN) 160 return (EBUSY); 161 162 disk_destroy(sc->ld_disk); 163 return (0); 164 } 165 166 static int 167 mfi_disk_open(struct disk *dp) 168 { 169 170 return (0); 171 } 172 173 static int 174 mfi_disk_close(struct disk *dp) 175 { 176 177 return (0); 178 } 179 180 static void 181 mfi_disk_strategy(struct bio *bio) 182 { 183 struct mfi_disk *sc; 184 struct mfi_softc *controller; 185 186 sc = bio->bio_disk->d_drv1; 187 188 if (sc == NULL) { 189 bio->bio_error = EINVAL; 190 bio->bio_flags |= BIO_ERROR; 191 bio->bio_resid = bio->bio_bcount; 192 biodone(bio); 193 return; 194 } 195 196 controller = sc->ld_controller; 197 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 198 mtx_lock(&controller->mfi_io_lock); 199 mfi_enqueue_bio(controller, bio); 200 mfi_startio(controller); 201 mtx_unlock(&controller->mfi_io_lock); 202 return; 203 } 204 205 void 206 mfi_disk_complete(struct bio *bio) 207 { 208 struct mfi_disk *sc; 209 struct mfi_frame_header *hdr; 210 211 sc = bio->bio_disk->d_drv1; 212 hdr = bio->bio_driver1; 213 214 if (bio->bio_flags & BIO_ERROR) { 215 if (bio->bio_error == 0) 216 bio->bio_error = EIO; 217 disk_err(bio, "hard error", -1, 1); 218 } else { 219 bio->bio_resid = 0; 220 } 221 biodone(bio); 222 } 223 224 static int 225 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 226 { 227 struct mfi_disk *sc; 228 struct mfi_softc *parent_sc; 229 struct disk *dp; 230 int error; 231 232 dp = arg; 233 sc = dp->d_drv1; 234 parent_sc = sc->ld_controller; 235 236 if (len > 0) { 237 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 238 sc->ld_ld->ld_secsize, virt, len)) != 0) 239 return (error); 240 } else { 241 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 242 } 243 244 return (0); 245 } 246