1 /*- 2 * Written by: David Jeffery 3 * Copyright (c) 2002 Adaptec Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/sys/dev/ips/ips_disk.c,v 1.4 2003/09/22 04:59:07 njl 28 * $DragonFly: src/sys/dev/raid/ips/ips_disk.c,v 1.1 2004/01/15 15:41:23 drhodus Exp $ 29 */ 30 31 #include <sys/cdefs.h> 32 33 #include <dev/raid/ips/ips.h> 34 #include <dev/raid/ips/ips_disk.h> 35 #include <sys/stat.h> 36 37 static int ipsd_probe(device_t dev); 38 static int ipsd_attach(device_t dev); 39 static int ipsd_detach(device_t dev); 40 41 static disk_open_t ipsd_open; 42 static disk_close_t ipsd_close; 43 static disk_strategy_t ipsd_strategy; 44 45 static struct cdevsw ipsd_cdevsw = { 46 .d_name = "ipsd", 47 .d_maj = IPSD_CDEV_MAJOR, 48 .d_flags = D_DISK, 49 .d_port = NULL, 50 .d_autoq = 0, 51 .old_open = ipsd_open, 52 .old_close = ipsd_close, 53 .old_strategy = ipsd_strategy, 54 .old_read = physread, 55 .old_write = physwrite, 56 }; 57 58 static device_method_t ipsd_methods[] = { 59 DEVMETHOD(device_probe, ipsd_probe), 60 DEVMETHOD(device_attach, ipsd_attach), 61 DEVMETHOD(device_detach, ipsd_detach), 62 { 0, 0 } 63 }; 64 65 66 static driver_t ipsd_driver = { 67 "ipsd", 68 ipsd_methods, 69 sizeof(ipsdisk_softc_t) 70 }; 71 72 static devclass_t ipsd_devclass; 73 DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 0, 0); 74 75 /* 76 * handle opening of disk device. It must set up all information about 77 * the geometry and size of the disk 78 */ 79 static int 80 ipsd_open(dev_t dev, int oflags, int devtype, d_thread_t *td) 81 { 82 ipsdisk_softc_t *dsc = dev->si_drv1; 83 84 if (dsc == NULL) 85 return (ENXIO); 86 dsc->state |= IPS_DEV_OPEN; 87 DEVICE_PRINTF(2, dsc->dev, "I'm open\n"); 88 return 0; 89 } 90 91 static int 92 ipsd_close(dev_t dev, int oflags, int devtype, d_thread_t *td) 93 { 94 ipsdisk_softc_t *dsc = dev->si_drv1; 95 96 dsc->state &= ~IPS_DEV_OPEN; 97 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n"); 98 return 0; 99 } 100 101 /* ipsd_finish is called to clean up and return a completed IO request */ 102 void 103 ipsd_finish(struct bio *iobuf) 104 { 105 if (iobuf->bio_flags & BIO_ERROR) { 106 ipsdisk_softc_t *dsc; 107 dsc = iobuf->bio_disk->d_drv1; 108 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error); 109 } else 110 iobuf->bio_resid = 0; 111 112 biodone(iobuf); 113 } 114 115 116 static void 117 ipsd_strategy(struct bio *iobuf) 118 { 119 ipsdisk_softc_t *dsc; 120 121 dsc = iobuf->bio_disk->d_drv1; 122 DEVICE_PRINTF(8, dsc->dev, "in strategy\n"); 123 iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum; 124 ips_start_io_request(dsc->sc, iobuf); 125 } 126 127 static int 128 ipsd_probe(device_t dev) 129 { 130 DEVICE_PRINTF(2, dev, "in probe\n"); 131 device_set_desc(dev, "Logical Drive"); 132 return 0; 133 } 134 135 static int 136 ipsd_attach(device_t dev) 137 { 138 device_t adapter; 139 ipsdisk_softc_t *dsc; 140 struct disklabel *label; 141 u_int totalsectors; 142 u_int nheads, nsectors; 143 144 DEVICE_PRINTF(2, dev, "in attach\n"); 145 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 146 bzero(dsc, sizeof(ipsdisk_softc_t)); 147 adapter = device_get_parent(dev); 148 dsc->dev = dev; 149 dsc->sc = device_get_softc(adapter); 150 dsc->unit = device_get_unit(dev); 151 dsc->disk_number = (uintptr_t) device_get_ivars(dev); 152 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; 153 if ((totalsectors > 0x400000) && 154 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { 155 nheads = IPS_NORM_HEADS; 156 nsectors = IPS_NORM_SECTORS; 157 } else { 158 nheads = IPS_COMP_HEADS; 159 nsectors = IPS_COMP_SECTORS; 160 } 161 dsc->ipsd_dev_t = disk_create(dsc->unit, &dsc->ipsd_disk, 0, 162 &ipsd_cdevsw); 163 dsc->ipsd_dev_t->si_drv1 = dsc; 164 dsc->ipsd_dev_t->si_iosize_max = IPS_MAX_IO_SIZE; 165 label = &dsc->ipsd_disk.d_label; 166 bzero(label, sizeof(*label)); 167 label->d_ntracks = nheads; 168 label->d_nsectors = nsectors; 169 label->d_type = DTYPE_ESDI; 170 label->d_secsize = IPS_BLKSIZE; 171 label->d_ncylinders = totalsectors / nheads / nsectors; 172 label->d_secpercyl = nsectors / nheads; 173 label->d_secperunit = totalsectors; 174 device_printf(dev, "Logical Drive (%dMB)\n", 175 dsc->sc->drives[dsc->disk_number].sector_count >> 11); 176 return 0; 177 } 178 179 static int 180 ipsd_detach(device_t dev) 181 { 182 ipsdisk_softc_t *dsc; 183 184 DEVICE_PRINTF(2, dev, "in detach\n"); 185 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 186 if (dsc->state & IPS_DEV_OPEN) 187 return (EBUSY); 188 disk_destroy(&dsc->ipsd_disk); 189 return 0; 190 } 191 192