mfi_disk.c revision 157114
197403Sobrien/*- 297403Sobrien * Copyright (c) 2006 IronPort Systems 397403Sobrien * All rights reserved. 4132720Skan * 597403Sobrien * Redistribution and use in source and binary forms, with or without 6132720Skan * modification, are permitted provided that the following conditions 797403Sobrien * are met: 897403Sobrien * 1. Redistributions of source code must retain the above copyright 997403Sobrien * notice, this list of conditions and the following disclaimer. 1097403Sobrien * 2. Redistributions in binary form must reproduce the above copyright 11132720Skan * notice, this list of conditions and the following disclaimer in the 1297403Sobrien * documentation and/or other materials provided with the distribution. 1397403Sobrien * 1497403Sobrien * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1597403Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1697403Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17132720Skan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18169691Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19169691Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2097403Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2197403Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2297403Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2397403Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2497403Sobrien * SUCH DAMAGE. 2597403Sobrien */ 2697403Sobrien 2797403Sobrien#include <sys/cdefs.h> 2897403Sobrien__FBSDID("$FreeBSD: head/sys/dev/mfi/mfi_disk.c 157114 2006-03-25 06:14:32Z scottl $"); 2997403Sobrien 3097403Sobrien#include "opt_mfi.h" 31169691Skan 3297403Sobrien#include <sys/param.h> 3397403Sobrien#include <sys/systm.h> 34169691Skan#include <sys/kernel.h> 35132720Skan#include <sys/module.h> 3697403Sobrien#include <sys/malloc.h> 3797403Sobrien 3897403Sobrien#include <sys/bio.h> 3997403Sobrien#include <sys/bus.h> 4097403Sobrien#include <sys/conf.h> 4197403Sobrien#include <sys/disk.h> 4297403Sobrien#include <geom/geom_disk.h> 4397403Sobrien 44102782Skan#include <vm/vm.h> 45102782Skan#include <vm/pmap.h> 4697403Sobrien 47169691Skan#include <machine/md_var.h> 48169691Skan#include <machine/bus.h> 49169691Skan#include <sys/rman.h> 5097403Sobrien 5197403Sobrien#include <dev/mfi/mfireg.h> 52169691Skan#include <dev/mfi/mfi_ioctl.h> 5397403Sobrien#include <dev/mfi/mfivar.h> 5497403Sobrien 5597403Sobrienstatic int mfi_disk_probe(device_t dev); 5697403Sobrienstatic int mfi_disk_attach(device_t dev); 57static int mfi_disk_detach(device_t dev); 58 59static disk_open_t mfi_disk_open; 60static disk_close_t mfi_disk_close; 61static disk_strategy_t mfi_disk_strategy; 62static dumper_t mfi_disk_dump; 63 64static devclass_t mfi_disk_devclass; 65 66struct mfi_disk { 67 device_t ld_dev; 68 int ld_id; 69 int ld_unit; 70 struct mfi_softc *ld_controller; 71 struct mfi_ld *ld_ld; 72 struct disk *ld_disk; 73}; 74 75static device_method_t mfi_disk_methods[] = { 76 DEVMETHOD(device_probe, mfi_disk_probe), 77 DEVMETHOD(device_attach, mfi_disk_attach), 78 DEVMETHOD(device_detach, mfi_disk_detach), 79 { 0, 0 } 80}; 81 82static driver_t mfi_disk_driver = { 83 "mfid", 84 mfi_disk_methods, 85 sizeof(struct mfi_disk) 86}; 87 88DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); 89 90static int 91mfi_disk_probe(device_t dev) 92{ 93 94 return (0); 95} 96 97static int 98mfi_disk_attach(device_t dev) 99{ 100 struct mfi_disk *sc; 101 struct mfi_ld *ld; 102 uint64_t sectors; 103 uint32_t secsize; 104 105 sc = device_get_softc(dev); 106 ld = device_get_ivars(dev); 107 108 sc->ld_dev = dev; 109 sc->ld_id = ld->ld_id; 110 sc->ld_unit = device_get_unit(dev); 111 sc->ld_ld = device_get_ivars(dev); 112 sc->ld_controller = device_get_softc(device_get_parent(dev)); 113 114 sectors = sc->ld_ld->ld_sectors; 115 secsize = sc->ld_ld->ld_secsize; 116 if (secsize != MFI_SECTOR_LEN) { 117 device_printf(sc->ld_dev, "Reported sector length %d is not " 118 "512, aborting\n", secsize); 119 free(sc->ld_ld, M_MFIBUF); 120 return (EINVAL); 121 } 122 123 device_printf(dev, "%juMB (%ju sectors) RAID\n", 124 sectors / (1024 * 1024 / secsize), sectors); 125 126 sc->ld_disk = disk_alloc(); 127 sc->ld_disk->d_drv1 = sc; 128 sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize; 129 sc->ld_disk->d_name = "mfid"; 130 sc->ld_disk->d_open = mfi_disk_open; 131 sc->ld_disk->d_close = mfi_disk_close; 132 sc->ld_disk->d_strategy = mfi_disk_strategy; 133 sc->ld_disk->d_dump = mfi_disk_dump; 134 sc->ld_disk->d_unit = sc->ld_unit; 135 sc->ld_disk->d_sectorsize = secsize; 136 sc->ld_disk->d_mediasize = sectors * secsize; 137 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 138 sc->ld_disk->d_fwheads = 255; 139 sc->ld_disk->d_fwsectors = 63; 140 } else { 141 sc->ld_disk->d_fwheads = 64; 142 sc->ld_disk->d_fwsectors = 32; 143 } 144 disk_create(sc->ld_disk, DISK_VERSION); 145 146 return (0); 147} 148 149static int 150mfi_disk_detach(device_t dev) 151{ 152 struct mfi_disk *sc; 153 154 sc = device_get_softc(dev); 155 156 if (sc->ld_disk->d_flags & DISKFLAG_OPEN) 157 return (EBUSY); 158 159 disk_destroy(sc->ld_disk); 160 return (0); 161} 162 163static int 164mfi_disk_open(struct disk *dp) 165{ 166 167 return (0); 168} 169 170static int 171mfi_disk_close(struct disk *dp) 172{ 173 174 return (0); 175} 176 177static void 178mfi_disk_strategy(struct bio *bio) 179{ 180 struct mfi_disk *sc; 181 struct mfi_softc *controller; 182 183 sc = bio->bio_disk->d_drv1; 184 185 if (sc == NULL) { 186 bio->bio_error = EINVAL; 187 bio->bio_flags |= BIO_ERROR; 188 bio->bio_resid = bio->bio_bcount; 189 biodone(bio); 190 return; 191 } 192 193 controller = sc->ld_controller; 194 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 195 mtx_lock(&controller->mfi_io_lock); 196 mfi_enqueue_bio(controller, bio); 197 mfi_startio(controller); 198 mtx_unlock(&controller->mfi_io_lock); 199 return; 200} 201 202void 203mfi_disk_complete(struct bio *bio) 204{ 205 struct mfi_disk *sc; 206 struct mfi_frame_header *hdr; 207 208 sc = bio->bio_disk->d_drv1; 209 hdr = bio->bio_driver1; 210 211 if (bio->bio_flags & BIO_ERROR) { 212 if (bio->bio_error == 0) 213 bio->bio_error = EIO; 214 disk_err(bio, "hard error", -1, 1); 215 } else { 216 bio->bio_resid = 0; 217 } 218 biodone(bio); 219} 220 221static int 222mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 223{ 224 struct mfi_disk *sc; 225 struct mfi_softc *parent_sc; 226 struct disk *dp; 227 int error; 228 229 dp = arg; 230 sc = dp->d_drv1; 231 parent_sc = sc->ld_controller; 232 233 if (len > 0) { 234 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 235 sc->ld_ld->ld_secsize, virt, len)) != 0) 236 return (error); 237 } else { 238 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 239 } 240 241 return (0); 242} 243