1 /*- 2 * Copyright (c) 1999,2000 Jonathan Lemon 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 * $FreeBSD$ 27 */ 28 29 /* 30 * Disk driver for Compaq SMART RAID adapters. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 37 #include <sys/buf.h> 38 #include <sys/bus.h> 39 #include <sys/conf.h> 40 #include <sys/devicestat.h> 41 #include <sys/disk.h> 42 43 #if NPCI > 0 44 #include <machine/bus_memio.h> 45 #endif 46 #include <machine/bus_pio.h> 47 #include <machine/bus.h> 48 #include <machine/clock.h> 49 #include <sys/rman.h> 50 51 #include <dev/ida/idareg.h> 52 #include <dev/ida/idavar.h> 53 54 /* prototypes */ 55 static int idad_probe(device_t dev); 56 static int idad_attach(device_t dev); 57 static int idad_detach(device_t dev); 58 59 static d_open_t idad_open; 60 static d_close_t idad_close; 61 static d_strategy_t idad_strategy; 62 63 #define IDAD_BDEV_MAJOR 29 64 #define IDAD_CDEV_MAJOR 109 65 66 static struct cdevsw id_cdevsw = { 67 /* open */ idad_open, 68 /* close */ idad_close, 69 /* read */ physread, 70 /* write */ physwrite, 71 /* ioctl */ noioctl, 72 /* poll */ nopoll, 73 /* mmap */ nommap, 74 /* strategy */ idad_strategy, 75 /* name */ "idad", 76 /* maj */ IDAD_CDEV_MAJOR, 77 /* dump */ nodump, 78 /* psize */ nopsize, 79 /* flags */ D_DISK, 80 /* bmaj */ IDAD_BDEV_MAJOR 81 }; 82 83 static devclass_t idad_devclass; 84 static struct cdevsw idaddisk_cdevsw; 85 static int disks_registered = 0; 86 87 static device_method_t idad_methods[] = { 88 DEVMETHOD(device_probe, idad_probe), 89 DEVMETHOD(device_attach, idad_attach), 90 DEVMETHOD(device_detach, idad_detach), 91 { 0, 0 } 92 }; 93 94 static driver_t idad_driver = { 95 "idad", 96 idad_methods, 97 sizeof(struct idad_softc) 98 }; 99 100 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0); 101 102 static __inline struct idad_softc * 103 idad_getsoftc(dev_t dev) 104 { 105 106 return ((struct idad_softc *)dev->si_drv1); 107 } 108 109 static int 110 idad_open(dev_t dev, int flags, int fmt, struct proc *p) 111 { 112 struct idad_softc *drv; 113 struct disklabel *label; 114 115 drv = idad_getsoftc(dev); 116 if (drv == NULL) 117 return (ENXIO); 118 119 label = &drv->disk.d_label; 120 bzero(label, sizeof(*label)); 121 label->d_type = DTYPE_SCSI; 122 label->d_secsize = drv->secsize; 123 label->d_nsectors = drv->sectors; 124 label->d_ntracks = drv->heads; 125 label->d_ncylinders = drv->cylinders; 126 label->d_secpercyl = drv->sectors * drv->heads; 127 label->d_secperunit = drv->secperunit; 128 129 return (0); 130 } 131 132 static int 133 idad_close(dev_t dev, int flags, int fmt, struct proc *p) 134 { 135 struct idad_softc *drv; 136 137 drv = idad_getsoftc(dev); 138 if (drv == NULL) 139 return (ENXIO); 140 return (0); 141 } 142 143 /* 144 * Read/write routine for a buffer. Finds the proper unit, range checks 145 * arguments, and schedules the transfer. Does not wait for the transfer 146 * to complete. Multi-page transfers are supported. All I/O requests must 147 * be a multiple of a sector in length. 148 */ 149 static void 150 idad_strategy(struct bio *bp) 151 { 152 struct idad_softc *drv; 153 int s; 154 155 drv = idad_getsoftc(bp->bio_dev); 156 if (drv == NULL) { 157 bp->bio_error = EINVAL; 158 goto bad; 159 } 160 161 /* 162 * software write protect check 163 */ 164 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 165 bp->bio_error = EROFS; 166 goto bad; 167 } 168 169 /* 170 * If it's a null transfer, return immediately 171 */ 172 if (bp->bio_bcount == 0) 173 goto done; 174 175 bp->bio_driver1 = drv; 176 s = splbio(); 177 devstat_start_transaction(&drv->stats); 178 ida_submit_buf(drv->controller, bp); 179 splx(s); 180 return; 181 182 bad: 183 bp->bio_flags |= BIO_ERROR; 184 185 done: 186 /* 187 * Correctly set the buf to indicate a completed transfer 188 */ 189 bp->bio_resid = bp->bio_bcount; 190 biodone(bp); 191 return; 192 } 193 194 void 195 idad_intr(struct bio *bp) 196 { 197 struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1; 198 199 if (bp->bio_flags & BIO_ERROR) 200 bp->bio_error = EIO; 201 else 202 bp->bio_resid = 0; 203 204 devstat_end_transaction_bio(&drv->stats, bp); 205 biodone(bp); 206 } 207 208 static int 209 idad_probe(device_t dev) 210 { 211 212 device_set_desc(dev, "Compaq Logical Drive"); 213 return (0); 214 } 215 216 static int 217 idad_attach(device_t dev) 218 { 219 struct ida_drive_info dinfo; 220 struct idad_softc *drv; 221 device_t parent; 222 dev_t dsk; 223 int error; 224 225 drv = (struct idad_softc *)device_get_softc(dev); 226 parent = device_get_parent(dev); 227 drv->controller = (struct ida_softc *)device_get_softc(parent); 228 drv->unit = device_get_unit(dev); 229 230 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 231 &dinfo, sizeof(dinfo), drv->unit, DMA_DATA_IN); 232 if (error) { 233 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 234 return (ENXIO); 235 } 236 237 drv->cylinders = dinfo.ncylinders; 238 drv->heads = dinfo.nheads; 239 drv->sectors = dinfo.nsectors; 240 drv->secsize = dinfo.secsize; 241 drv->secperunit = dinfo.secperunit; 242 243 /* XXX 244 * other initialization 245 */ 246 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 247 drv->secperunit / ((1024 * 1024) / drv->secsize), 248 drv->secperunit, drv->secsize); 249 250 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 251 DEVSTAT_NO_ORDERED_TAGS, 252 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 253 DEVSTAT_PRIORITY_ARRAY); 254 255 dsk = disk_create(drv->unit, &drv->disk, 0, 256 &id_cdevsw, &idaddisk_cdevsw); 257 258 dsk->si_drv1 = drv; 259 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */ 260 disks_registered++; 261 262 return (0); 263 } 264 265 static int 266 idad_detach(device_t dev) 267 { 268 struct idad_softc *drv; 269 270 drv = (struct idad_softc *)device_get_softc(dev); 271 devstat_remove_entry(&drv->stats); 272 273 if (--disks_registered == 0) 274 cdevsw_remove(&idaddisk_cdevsw); 275 return (0); 276 } 277