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/bio.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 <sys/rman.h> 49 50 #include <dev/ida/idareg.h> 51 #include <dev/ida/idavar.h> 52 53 /* prototypes */ 54 static int idad_probe(device_t dev); 55 static int idad_attach(device_t dev); 56 static int idad_detach(device_t dev); 57 58 static d_open_t idad_open; 59 static d_close_t idad_close; 60 static d_strategy_t idad_strategy; 61 62 #define IDAD_BDEV_MAJOR 29 63 #define IDAD_CDEV_MAJOR 109 64 65 static struct cdevsw id_cdevsw = { 66 /* open */ idad_open, 67 /* close */ idad_close, 68 /* read */ physread, 69 /* write */ physwrite, 70 /* ioctl */ noioctl, 71 /* poll */ nopoll, 72 /* mmap */ nommap, 73 /* strategy */ idad_strategy, 74 /* name */ "idad", 75 /* maj */ IDAD_CDEV_MAJOR, 76 /* dump */ nodump, 77 /* psize */ nopsize, 78 /* flags */ D_DISK, 79 /* bmaj */ IDAD_BDEV_MAJOR 80 }; 81 82 static devclass_t idad_devclass; 83 static struct cdevsw idaddisk_cdevsw; 84 static int disks_registered = 0; 85 86 static device_method_t idad_methods[] = { 87 DEVMETHOD(device_probe, idad_probe), 88 DEVMETHOD(device_attach, idad_attach), 89 DEVMETHOD(device_detach, idad_detach), 90 { 0, 0 } 91 }; 92 93 static driver_t idad_driver = { 94 "idad", 95 idad_methods, 96 sizeof(struct idad_softc) 97 }; 98 99 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0); 100 101 static __inline struct idad_softc * 102 idad_getsoftc(dev_t dev) 103 { 104 105 return ((struct idad_softc *)dev->si_drv1); 106 } 107 108 static int 109 idad_open(dev_t dev, int flags, int fmt, struct proc *p) 110 { 111 struct idad_softc *drv; 112 struct disklabel *label; 113 114 drv = idad_getsoftc(dev); 115 if (drv == NULL) 116 return (ENXIO); 117 118 label = &drv->disk.d_label; 119 bzero(label, sizeof(*label)); 120 label->d_type = DTYPE_SCSI; 121 label->d_secsize = drv->secsize; 122 label->d_nsectors = drv->sectors; 123 label->d_ntracks = drv->heads; 124 label->d_ncylinders = drv->cylinders; 125 label->d_secpercyl = drv->sectors * drv->heads; 126 label->d_secperunit = drv->secperunit; 127 128 return (0); 129 } 130 131 static int 132 idad_close(dev_t dev, int flags, int fmt, struct proc *p) 133 { 134 struct idad_softc *drv; 135 136 drv = idad_getsoftc(dev); 137 if (drv == NULL) 138 return (ENXIO); 139 return (0); 140 } 141 142 /* 143 * Read/write routine for a buffer. Finds the proper unit, range checks 144 * arguments, and schedules the transfer. Does not wait for the transfer 145 * to complete. Multi-page transfers are supported. All I/O requests must 146 * be a multiple of a sector in length. 147 */ 148 static void 149 idad_strategy(struct bio *bp) 150 { 151 struct idad_softc *drv; 152 int s; 153 154 drv = idad_getsoftc(bp->bio_dev); 155 if (drv == NULL) { 156 bp->bio_error = EINVAL; 157 goto bad; 158 } 159 160 /* 161 * software write protect check 162 */ 163 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 164 bp->bio_error = EROFS; 165 goto bad; 166 } 167 168 /* 169 * If it's a null transfer, return immediately 170 */ 171 if (bp->bio_bcount == 0) 172 goto done; 173 174 bp->bio_driver1 = drv; 175 s = splbio(); 176 devstat_start_transaction(&drv->stats); 177 ida_submit_buf(drv->controller, bp); 178 splx(s); 179 return; 180 181 bad: 182 bp->bio_flags |= BIO_ERROR; 183 184 done: 185 /* 186 * Correctly set the buf to indicate a completed transfer 187 */ 188 bp->bio_resid = bp->bio_bcount; 189 biodone(bp); 190 return; 191 } 192 193 void 194 idad_intr(struct bio *bp) 195 { 196 struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1; 197 198 if (bp->bio_flags & BIO_ERROR) 199 bp->bio_error = EIO; 200 else 201 bp->bio_resid = 0; 202 203 devstat_end_transaction_bio(&drv->stats, bp); 204 biodone(bp); 205 } 206 207 static int 208 idad_probe(device_t dev) 209 { 210 211 device_set_desc(dev, "Compaq Logical Drive"); 212 return (0); 213 } 214 215 static int 216 idad_attach(device_t dev) 217 { 218 struct ida_drive_info dinfo; 219 struct idad_softc *drv; 220 device_t parent; 221 dev_t dsk; 222 int error; 223 224 drv = (struct idad_softc *)device_get_softc(dev); 225 parent = device_get_parent(dev); 226 drv->controller = (struct ida_softc *)device_get_softc(parent); 227 drv->unit = device_get_unit(dev); 228 drv->drive = drv->controller->num_drives; 229 drv->controller->num_drives++; 230 231 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 232 &dinfo, sizeof(dinfo), drv->drive, DMA_DATA_IN); 233 if (error) { 234 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 235 return (ENXIO); 236 } 237 238 drv->cylinders = dinfo.ncylinders; 239 drv->heads = dinfo.nheads; 240 drv->sectors = dinfo.nsectors; 241 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 242 drv->secperunit = dinfo.secperunit; 243 244 /* XXX 245 * other initialization 246 */ 247 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 248 drv->secperunit / ((1024 * 1024) / drv->secsize), 249 drv->secperunit, drv->secsize); 250 251 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 252 DEVSTAT_NO_ORDERED_TAGS, 253 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 254 DEVSTAT_PRIORITY_ARRAY); 255 256 dsk = disk_create(drv->unit, &drv->disk, 0, 257 &id_cdevsw, &idaddisk_cdevsw); 258 259 dsk->si_drv1 = drv; 260 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */ 261 disks_registered++; 262 263 return (0); 264 } 265 266 static int 267 idad_detach(device_t dev) 268 { 269 struct idad_softc *drv; 270 271 drv = (struct idad_softc *)device_get_softc(dev); 272 devstat_remove_entry(&drv->stats); 273 274 if (--disks_registered == 0) 275 cdevsw_remove(&idaddisk_cdevsw); 276 return (0); 277 } 278