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/cons.h> 41 #include <sys/devicestat.h> 42 #include <sys/disk.h> 43 44 #if NPCI > 0 45 #include <machine/bus_memio.h> 46 #endif 47 #include <machine/bus_pio.h> 48 #include <machine/bus.h> 49 #include <sys/rman.h> 50 51 #include <vm/vm.h> 52 #include <vm/pmap.h> 53 #include <machine/md_var.h> 54 55 #include <dev/ida/idareg.h> 56 #include <dev/ida/idavar.h> 57 58 /* prototypes */ 59 static int idad_probe(device_t dev); 60 static int idad_attach(device_t dev); 61 static int idad_detach(device_t dev); 62 63 static d_open_t idad_open; 64 static d_close_t idad_close; 65 static d_strategy_t idad_strategy; 66 static d_dump_t idad_dump; 67 68 #define IDAD_CDEV_MAJOR 109 69 70 static struct cdevsw id_cdevsw = { 71 /* open */ idad_open, 72 /* close */ idad_close, 73 /* read */ physread, 74 /* write */ physwrite, 75 /* ioctl */ noioctl, 76 /* poll */ nopoll, 77 /* mmap */ nommap, 78 /* strategy */ idad_strategy, 79 /* name */ "idad", 80 /* maj */ IDAD_CDEV_MAJOR, 81 /* dump */ idad_dump, 82 /* psize */ nopsize, 83 /* flags */ D_DISK, 84 }; 85 86 static devclass_t idad_devclass; 87 static struct cdevsw idaddisk_cdevsw; 88 static int disks_registered = 0; 89 90 static device_method_t idad_methods[] = { 91 DEVMETHOD(device_probe, idad_probe), 92 DEVMETHOD(device_attach, idad_attach), 93 DEVMETHOD(device_detach, idad_detach), 94 { 0, 0 } 95 }; 96 97 static driver_t idad_driver = { 98 "idad", 99 idad_methods, 100 sizeof(struct idad_softc) 101 }; 102 103 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0); 104 105 static __inline struct idad_softc * 106 idad_getsoftc(dev_t dev) 107 { 108 109 return ((struct idad_softc *)dev->si_drv1); 110 } 111 112 static int 113 idad_open(dev_t dev, int flags, int fmt, struct proc *p) 114 { 115 struct idad_softc *drv; 116 struct disklabel *label; 117 118 drv = idad_getsoftc(dev); 119 if (drv == NULL) 120 return (ENXIO); 121 122 label = &drv->disk.d_label; 123 bzero(label, sizeof(*label)); 124 label->d_type = DTYPE_SCSI; 125 label->d_secsize = drv->secsize; 126 label->d_nsectors = drv->sectors; 127 label->d_ntracks = drv->heads; 128 label->d_ncylinders = drv->cylinders; 129 label->d_secpercyl = drv->sectors * drv->heads; 130 label->d_secperunit = drv->secperunit; 131 132 return (0); 133 } 134 135 static int 136 idad_close(dev_t dev, int flags, int fmt, struct proc *p) 137 { 138 struct idad_softc *drv; 139 140 drv = idad_getsoftc(dev); 141 if (drv == NULL) 142 return (ENXIO); 143 return (0); 144 } 145 146 /* 147 * Read/write routine for a buffer. Finds the proper unit, range checks 148 * arguments, and schedules the transfer. Does not wait for the transfer 149 * to complete. Multi-page transfers are supported. All I/O requests must 150 * be a multiple of a sector in length. 151 */ 152 static void 153 idad_strategy(struct bio *bp) 154 { 155 struct idad_softc *drv; 156 int s; 157 158 drv = idad_getsoftc(bp->bio_dev); 159 if (drv == NULL) { 160 bp->bio_error = EINVAL; 161 goto bad; 162 } 163 164 /* 165 * software write protect check 166 */ 167 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 168 bp->bio_error = EROFS; 169 goto bad; 170 } 171 172 bp->bio_driver1 = drv; 173 s = splbio(); 174 devstat_start_transaction(&drv->stats); 175 ida_submit_buf(drv->controller, bp); 176 splx(s); 177 return; 178 179 bad: 180 bp->bio_flags |= BIO_ERROR; 181 182 done: 183 /* 184 * Correctly set the buf to indicate a completed transfer 185 */ 186 bp->bio_resid = bp->bio_bcount; 187 biodone(bp); 188 return; 189 } 190 191 static int 192 idad_dump(dev_t dev) 193 { 194 struct idad_softc *drv; 195 u_int count, blkno, secsize; 196 long blkcnt; 197 int i, error, dumppages; 198 caddr_t va; 199 vm_offset_t addr, a; 200 201 if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize))) 202 return (error); 203 204 drv = idad_getsoftc(dev); 205 if (drv == NULL) 206 return (ENXIO); 207 208 addr = 0; 209 blkcnt = howmany(PAGE_SIZE, secsize); 210 211 while (count > 0) { 212 va = NULL; 213 214 dumppages = imin(count / blkcnt, MAXDUMPPGS); 215 216 for (i = 0; i < dumppages; i++) { 217 a = addr + (i * PAGE_SIZE); 218 if (is_physical_memory(a)) 219 va = pmap_kenter_temporary(trunc_page(a), i); 220 else 221 va = pmap_kenter_temporary(trunc_page(0), i); 222 } 223 224 error = ida_command(drv->controller, CMD_WRITE, va, 225 PAGE_SIZE * dumppages, drv->drive, blkno, DMA_DATA_OUT); 226 if (error) 227 return (error); 228 229 if (dumpstatus(addr, (long)(count * DEV_BSIZE)) < 0) 230 return (EINTR); 231 232 blkno += blkcnt * dumppages; 233 count -= blkcnt * dumppages; 234 addr += PAGE_SIZE * dumppages; 235 } 236 return (0); 237 } 238 239 void 240 idad_intr(struct bio *bp) 241 { 242 struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1; 243 244 if (bp->bio_flags & BIO_ERROR) 245 bp->bio_error = EIO; 246 else 247 bp->bio_resid = 0; 248 249 biofinish(bp, &drv->stats, 0); 250 } 251 252 static int 253 idad_probe(device_t dev) 254 { 255 256 device_set_desc(dev, "Compaq Logical Drive"); 257 return (0); 258 } 259 260 static int 261 idad_attach(device_t dev) 262 { 263 struct ida_drive_info dinfo; 264 struct idad_softc *drv; 265 device_t parent; 266 dev_t dsk; 267 int error; 268 269 drv = (struct idad_softc *)device_get_softc(dev); 270 parent = device_get_parent(dev); 271 drv->controller = (struct ida_softc *)device_get_softc(parent); 272 drv->unit = device_get_unit(dev); 273 drv->drive = drv->controller->num_drives; 274 drv->controller->num_drives++; 275 276 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 277 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 278 if (error) { 279 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 280 return (ENXIO); 281 } 282 283 drv->cylinders = dinfo.ncylinders; 284 drv->heads = dinfo.nheads; 285 drv->sectors = dinfo.nsectors; 286 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 287 drv->secperunit = dinfo.secperunit; 288 289 /* XXX 290 * other initialization 291 */ 292 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 293 drv->secperunit / ((1024 * 1024) / drv->secsize), 294 drv->secperunit, drv->secsize); 295 296 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 297 DEVSTAT_NO_ORDERED_TAGS, 298 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 299 DEVSTAT_PRIORITY_ARRAY); 300 301 dsk = disk_create(drv->unit, &drv->disk, 0, 302 &id_cdevsw, &idaddisk_cdevsw); 303 304 dsk->si_drv1 = drv; 305 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */ 306 disks_registered++; 307 308 return (0); 309 } 310 311 static int 312 idad_detach(device_t dev) 313 { 314 struct idad_softc *drv; 315 316 drv = (struct idad_softc *)device_get_softc(dev); 317 devstat_remove_entry(&drv->stats); 318 319 if (--disks_registered == 0) 320 cdevsw_remove(&idaddisk_cdevsw); 321 return (0); 322 } 323