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 Exp $ 28 * $DragonFly: src/sys/dev/raid/ips/ips_disk.c,v 1.5 2004/10/06 02:12:31 y0netan1 Exp $ 29 */ 30 31 #include <sys/devicestat.h> 32 #include <dev/raid/ips/ips.h> 33 #include <dev/raid/ips/ips_disk.h> 34 #include <sys/stat.h> 35 36 static int ipsd_probe(device_t dev); 37 static int ipsd_attach(device_t dev); 38 static int ipsd_detach(device_t dev); 39 40 static disk_open_t ipsd_open; 41 static disk_close_t ipsd_close; 42 static disk_strategy_t ipsd_strategy; 43 44 static struct cdevsw ipsd_cdevsw = { 45 .d_name = "ipsd", 46 .d_maj = IPSD_CDEV_MAJOR, 47 .d_flags = D_DISK, 48 .d_port = NULL, 49 .d_clone = NULL, 50 .old_open = ipsd_open, 51 .old_close = ipsd_close, 52 .old_strategy = ipsd_strategy, 53 .old_read = physread, 54 .old_write = physwrite, 55 }; 56 57 static device_method_t ipsd_methods[] = { 58 DEVMETHOD(device_probe, ipsd_probe), 59 DEVMETHOD(device_attach, ipsd_attach), 60 DEVMETHOD(device_detach, ipsd_detach), 61 { 0, 0 } 62 }; 63 64 65 static driver_t ipsd_driver = { 66 "ipsd", 67 ipsd_methods, 68 sizeof(ipsdisk_softc_t) 69 }; 70 71 static devclass_t ipsd_devclass; 72 DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 0, 0); 73 74 /* 75 * handle opening of disk device. It must set up all information about 76 * the geometry and size of the disk 77 */ 78 static int 79 ipsd_open(dev_t dev, int oflags, int devtype, d_thread_t *td) 80 { 81 ipsdisk_softc_t *dsc = dev->si_drv1; 82 83 if (dsc == NULL) 84 return (ENXIO); 85 dsc->state |= IPS_DEV_OPEN; 86 DEVICE_PRINTF(2, dsc->dev, "I'm open\n"); 87 return 0; 88 } 89 90 static int 91 ipsd_close(dev_t dev, int oflags, int devtype, d_thread_t *td) 92 { 93 ipsdisk_softc_t *dsc = dev->si_drv1; 94 95 dsc->state &= ~IPS_DEV_OPEN; 96 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n"); 97 return 0; 98 } 99 100 /* ipsd_finish is called to clean up and return a completed IO request */ 101 void 102 ipsd_finish(struct bio *iobuf) 103 { 104 ipsdisk_softc_t *dsc; 105 106 dsc = iobuf->bio_disk->d_drv1; 107 if (iobuf->bio_flags & BIO_ERROR) { 108 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error); 109 } else 110 iobuf->bio_resid = 0; 111 devstat_end_transaction_buf(&dsc->stats, iobuf); 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 devstat_start_transaction(&dsc->stats); 125 ips_start_io_request(dsc->sc, iobuf); 126 } 127 128 static int 129 ipsd_probe(device_t dev) 130 { 131 DEVICE_PRINTF(2, dev, "in probe\n"); 132 device_set_desc(dev, "Logical Drive"); 133 return 0; 134 } 135 136 static int 137 ipsd_attach(device_t dev) 138 { 139 device_t adapter; 140 ipsdisk_softc_t *dsc; 141 struct disklabel *label; 142 u_int totalsectors; 143 u_int nheads, nsectors; 144 145 DEVICE_PRINTF(2, dev, "in attach\n"); 146 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 147 bzero(dsc, sizeof(ipsdisk_softc_t)); 148 adapter = device_get_parent(dev); 149 dsc->dev = dev; 150 dsc->sc = device_get_softc(adapter); 151 dsc->unit = device_get_unit(dev); 152 dsc->disk_number = (uintptr_t) device_get_ivars(dev); 153 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; 154 if ((totalsectors > 0x400000) && 155 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { 156 nheads = IPS_NORM_HEADS; 157 nsectors = IPS_NORM_SECTORS; 158 } else { 159 nheads = IPS_COMP_HEADS; 160 nsectors = IPS_COMP_SECTORS; 161 } 162 devstat_add_entry(&dsc->stats, "ipsd", dsc->unit, DEV_BSIZE, 163 DEVSTAT_NO_ORDERED_TAGS, 164 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_SCSI, 165 DEVSTAT_PRIORITY_DISK); 166 dsc->ipsd_dev_t = disk_create(dsc->unit, &dsc->ipsd_disk, 0, 167 &ipsd_cdevsw); 168 dsc->ipsd_dev_t->si_drv1 = dsc; 169 dsc->ipsd_dev_t->si_iosize_max = IPS_MAX_IO_SIZE; 170 label = &dsc->ipsd_disk.d_label; 171 bzero(label, sizeof(*label)); 172 label->d_ntracks = nheads; 173 label->d_nsectors = nsectors; 174 label->d_type = DTYPE_ESDI; 175 label->d_secsize = IPS_BLKSIZE; 176 label->d_ncylinders = totalsectors / nheads / nsectors; 177 label->d_secpercyl = nsectors / nheads; 178 label->d_secperunit = totalsectors; 179 device_printf(dev, "Logical Drive (%dMB)\n", 180 dsc->sc->drives[dsc->disk_number].sector_count >> 11); 181 return 0; 182 } 183 184 static int 185 ipsd_detach(device_t dev) 186 { 187 ipsdisk_softc_t *dsc; 188 189 DEVICE_PRINTF(2, dev, "in detach\n"); 190 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 191 if (dsc->state & IPS_DEV_OPEN) 192 return (EBUSY); 193 devstat_remove_entry(&dsc->stats); 194 disk_destroy(&dsc->ipsd_disk); 195 return 0; 196 } 197 198