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: src/sys/dev/ida/ida_disk.c,v 1.12.2.6 2001/11/27 20:21:02 ps Exp $ 27 * $DragonFly: src/sys/dev/raid/ida/ida_disk.c,v 1.4 2003/07/21 05:50:31 dillon Exp $ 28 */ 29 30 /* 31 * Disk driver for Compaq SMART RAID adapters. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/kernel.h> 38 39 #include <sys/buf.h> 40 #include <sys/bus.h> 41 #include <sys/conf.h> 42 #include <sys/cons.h> 43 #include <sys/devicestat.h> 44 #include <sys/disk.h> 45 46 #if NPCI > 0 47 #include <machine/bus_memio.h> 48 #endif 49 #include <machine/bus_pio.h> 50 #include <machine/bus.h> 51 #include <machine/clock.h> 52 #include <sys/rman.h> 53 54 #include <vm/vm.h> 55 #include <vm/pmap.h> 56 #include <machine/md_var.h> 57 58 #include <dev/ida/idareg.h> 59 #include <dev/ida/idavar.h> 60 61 /* prototypes */ 62 static int idad_probe(device_t dev); 63 static int idad_attach(device_t dev); 64 static int idad_detach(device_t dev); 65 66 static d_open_t idad_open; 67 static d_close_t idad_close; 68 static d_strategy_t idad_strategy; 69 static d_dump_t idad_dump; 70 71 #define IDAD_BDEV_MAJOR 29 72 #define IDAD_CDEV_MAJOR 109 73 74 static struct cdevsw id_cdevsw = { 75 /* name */ "idad", 76 /* maj */ IDAD_CDEV_MAJOR, 77 /* flags */ D_DISK, 78 /* port */ NULL, 79 /* autoq */ 0, 80 81 /* open */ idad_open, 82 /* close */ idad_close, 83 /* read */ physread, 84 /* write */ physwrite, 85 /* ioctl */ noioctl, 86 /* poll */ nopoll, 87 /* mmap */ nommap, 88 /* strategy */ idad_strategy, 89 /* dump */ idad_dump, 90 /* psize */ nopsize 91 }; 92 93 static devclass_t idad_devclass; 94 static struct cdevsw idaddisk_cdevsw; 95 static int disks_registered = 0; 96 97 static device_method_t idad_methods[] = { 98 DEVMETHOD(device_probe, idad_probe), 99 DEVMETHOD(device_attach, idad_attach), 100 DEVMETHOD(device_detach, idad_detach), 101 { 0, 0 } 102 }; 103 104 static driver_t idad_driver = { 105 "idad", 106 idad_methods, 107 sizeof(struct idad_softc) 108 }; 109 110 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0); 111 112 static __inline struct idad_softc * 113 idad_getsoftc(dev_t dev) 114 { 115 116 return ((struct idad_softc *)dev->si_drv1); 117 } 118 119 static int 120 idad_open(dev_t dev, int flags, int fmt, d_thread_t *td) 121 { 122 struct idad_softc *drv; 123 struct disklabel *label; 124 125 drv = idad_getsoftc(dev); 126 if (drv == NULL) 127 return (ENXIO); 128 129 label = &drv->disk.d_label; 130 bzero(label, sizeof(*label)); 131 label->d_type = DTYPE_SCSI; 132 label->d_secsize = drv->secsize; 133 label->d_nsectors = drv->sectors; 134 label->d_ntracks = drv->heads; 135 label->d_ncylinders = drv->cylinders; 136 label->d_secpercyl = drv->sectors * drv->heads; 137 label->d_secperunit = drv->secperunit; 138 139 return (0); 140 } 141 142 static int 143 idad_close(dev_t dev, int flags, int fmt, d_thread_t *td) 144 { 145 struct idad_softc *drv; 146 147 drv = idad_getsoftc(dev); 148 if (drv == NULL) 149 return (ENXIO); 150 return (0); 151 } 152 153 /* 154 * Read/write routine for a buffer. Finds the proper unit, range checks 155 * arguments, and schedules the transfer. Does not wait for the transfer 156 * to complete. Multi-page transfers are supported. All I/O requests must 157 * be a multiple of a sector in length. 158 */ 159 static void 160 idad_strategy(struct buf *bp) 161 { 162 struct idad_softc *drv; 163 int s; 164 165 drv = idad_getsoftc(bp->b_dev); 166 if (drv == NULL) { 167 bp->b_error = EINVAL; 168 goto bad; 169 } 170 171 /* 172 * software write protect check 173 */ 174 if (drv->flags & DRV_WRITEPROT && (bp->b_flags & B_READ) == 0) { 175 bp->b_error = EROFS; 176 goto bad; 177 } 178 179 /* 180 * If it's a null transfer, return immediately 181 */ 182 if (bp->b_bcount == 0) 183 goto done; 184 185 bp->b_driver1 = drv; 186 s = splbio(); 187 devstat_start_transaction(&drv->stats); 188 ida_submit_buf(drv->controller, bp); 189 splx(s); 190 return; 191 192 bad: 193 bp->b_flags |= B_ERROR; 194 195 done: 196 /* 197 * Correctly set the buf to indicate a completed transfer 198 */ 199 bp->b_resid = bp->b_bcount; 200 biodone(bp); 201 return; 202 } 203 204 static int 205 idad_dump(dev_t dev) 206 { 207 struct idad_softc *drv; 208 u_int count, blkno, secsize; 209 long blkcnt; 210 int i, error, dumppages; 211 caddr_t va; 212 vm_offset_t addr, a; 213 214 if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize))) 215 return (error); 216 217 drv = idad_getsoftc(dev); 218 if (drv == NULL) 219 return (ENXIO); 220 221 addr = 0; 222 blkcnt = howmany(PAGE_SIZE, secsize); 223 224 while (count > 0) { 225 va = NULL; 226 227 dumppages = imin(count / blkcnt, MAXDUMPPGS); 228 229 for (i = 0; i < dumppages; i++) { 230 a = addr + (i * PAGE_SIZE); 231 if (is_physical_memory(a)) 232 va = pmap_kenter_temporary(trunc_page(a), i); 233 else 234 va = pmap_kenter_temporary(trunc_page(0), i); 235 } 236 237 error = ida_command(drv->controller, CMD_WRITE, va, 238 PAGE_SIZE * dumppages, drv->drive, blkno, DMA_DATA_OUT); 239 if (error) 240 return (error); 241 242 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0) 243 return (EINTR); 244 245 blkno += blkcnt * dumppages; 246 count -= blkcnt * dumppages; 247 addr += PAGE_SIZE * dumppages; 248 } 249 return (0); 250 } 251 252 void 253 idad_intr(struct buf *bp) 254 { 255 struct idad_softc *drv = (struct idad_softc *)bp->b_driver1; 256 257 if (bp->b_flags & B_ERROR) 258 bp->b_error = EIO; 259 else 260 bp->b_resid = 0; 261 262 devstat_end_transaction_buf(&drv->stats, bp); 263 biodone(bp); 264 } 265 266 static int 267 idad_probe(device_t dev) 268 { 269 270 device_set_desc(dev, "Compaq Logical Drive"); 271 return (0); 272 } 273 274 static int 275 idad_attach(device_t dev) 276 { 277 struct ida_drive_info dinfo; 278 struct idad_softc *drv; 279 device_t parent; 280 dev_t dsk; 281 int error; 282 283 drv = (struct idad_softc *)device_get_softc(dev); 284 parent = device_get_parent(dev); 285 drv->controller = (struct ida_softc *)device_get_softc(parent); 286 drv->unit = device_get_unit(dev); 287 drv->drive = drv->controller->num_drives; 288 drv->controller->num_drives++; 289 290 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 291 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 292 if (error) { 293 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 294 return (ENXIO); 295 } 296 297 drv->cylinders = dinfo.ncylinders; 298 drv->heads = dinfo.nheads; 299 drv->sectors = dinfo.nsectors; 300 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 301 drv->secperunit = dinfo.secperunit; 302 303 /* XXX 304 * other initialization 305 */ 306 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 307 drv->secperunit / ((1024 * 1024) / drv->secsize), 308 drv->secperunit, drv->secsize); 309 310 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 311 DEVSTAT_NO_ORDERED_TAGS, 312 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 313 DEVSTAT_PRIORITY_ARRAY); 314 315 dsk = disk_create(drv->unit, &drv->disk, 0, 316 &id_cdevsw, &idaddisk_cdevsw); 317 318 dsk->si_drv1 = drv; 319 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */ 320 disks_registered++; 321 322 return (0); 323 } 324 325 static int 326 idad_detach(device_t dev) 327 { 328 struct idad_softc *drv; 329 330 drv = (struct idad_softc *)device_get_softc(dev); 331 devstat_remove_entry(&drv->stats); 332 333 if (--disks_registered == 0) 334 cdevsw_remove(&idaddisk_cdevsw); 335 return (0); 336 } 337