ips_disk.c revision 125975
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 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: head/sys/dev/ips/ips_disk.c 125975 2004-02-18 21:36:53Z phk $"); 30 31#include <dev/ips/ips.h> 32#include <dev/ips/ips_disk.h> 33#include <sys/stat.h> 34 35static int ipsd_probe(device_t dev); 36static int ipsd_attach(device_t dev); 37static int ipsd_detach(device_t dev); 38 39static disk_open_t ipsd_open; 40static disk_close_t ipsd_close; 41static disk_strategy_t ipsd_strategy; 42 43static device_method_t ipsd_methods[] = { 44 DEVMETHOD(device_probe, ipsd_probe), 45 DEVMETHOD(device_attach, ipsd_attach), 46 DEVMETHOD(device_detach, ipsd_detach), 47 { 0, 0 } 48}; 49 50 51static driver_t ipsd_driver = { 52 "ipsd", 53 ipsd_methods, 54 sizeof(ipsdisk_softc_t) 55}; 56 57static devclass_t ipsd_devclass; 58DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 0, 0); 59 60/* handle opening of disk device. It must set up all 61 information about the geometry and size of the disk */ 62static int ipsd_open(struct disk *dp) 63{ 64 ipsdisk_softc_t *dsc = dp->d_drv1; 65 66 dsc->state |= IPS_DEV_OPEN; 67 DEVICE_PRINTF(2, dsc->dev, "I'm open\n"); 68 return 0; 69} 70 71static int ipsd_close(struct disk *dp) 72{ 73 ipsdisk_softc_t *dsc = dp->d_drv1; 74 dsc->state &= ~IPS_DEV_OPEN; 75 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n"); 76 return 0; 77} 78 79/* ipsd_finish is called to clean up and return a completed IO request */ 80void ipsd_finish(struct bio *iobuf) 81{ 82 if (iobuf->bio_flags & BIO_ERROR) { 83 ipsdisk_softc_t *dsc; 84 dsc = iobuf->bio_disk->d_drv1; 85 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error); 86 } else 87 iobuf->bio_resid = 0; 88 89 biodone(iobuf); 90} 91 92 93static void ipsd_strategy(struct bio *iobuf) 94{ 95 ipsdisk_softc_t *dsc; 96 97 dsc = iobuf->bio_disk->d_drv1; 98 DEVICE_PRINTF(8,dsc->dev,"in strategy\n"); 99 iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum; 100 ips_start_io_request(dsc->sc, iobuf); 101} 102 103static int ipsd_probe(device_t dev) 104{ 105 DEVICE_PRINTF(2,dev, "in probe\n"); 106 device_set_desc(dev, "Logical Drive"); 107 return 0; 108} 109 110static int ipsd_attach(device_t dev) 111{ 112 device_t adapter; 113 ipsdisk_softc_t *dsc; 114 u_int totalsectors; 115 116 DEVICE_PRINTF(2,dev, "in attach\n"); 117 118 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 119 bzero(dsc, sizeof(ipsdisk_softc_t)); 120 adapter = device_get_parent(dev); 121 dsc->dev = dev; 122 dsc->sc = device_get_softc(adapter); 123 dsc->unit = device_get_unit(dev); 124 dsc->disk_number = (uintptr_t) device_get_ivars(dev); 125 dsc->ipsd_disk = disk_alloc(); 126 dsc->ipsd_disk->d_drv1 = dsc; 127 dsc->ipsd_disk->d_name = "ipsd"; 128 dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE; 129 dsc->ipsd_disk->d_open = ipsd_open; 130 dsc->ipsd_disk->d_close = ipsd_close; 131 dsc->ipsd_disk->d_strategy = ipsd_strategy; 132 133 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; 134 if ((totalsectors > 0x400000) && 135 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { 136 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS; 137 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS; 138 } else { 139 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS; 140 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS; 141 } 142 dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE; 143 dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE; 144 dsc->ipsd_disk->d_unit = dsc->unit; 145 dsc->ipsd_disk->d_flags = DISKFLAG_NEEDSGIANT; 146 disk_create(dsc->ipsd_disk, DISK_VERSION); 147 148 device_printf(dev, "Logical Drive (%dMB)\n", 149 dsc->sc->drives[dsc->disk_number].sector_count >> 11); 150 return 0; 151} 152 153static int ipsd_detach(device_t dev) 154{ 155 ipsdisk_softc_t *dsc; 156 157 DEVICE_PRINTF(2, dev,"in detach\n"); 158 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 159 if(dsc->state & IPS_DEV_OPEN) 160 return (EBUSY); 161 disk_destroy(dsc->ipsd_disk); 162 return 0; 163} 164 165