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 1.8 2004/05/19 22:52:47 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 "idareg.h" 59 #include "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 /* clone */ NULL, 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 95 static device_method_t idad_methods[] = { 96 DEVMETHOD(device_probe, idad_probe), 97 DEVMETHOD(device_attach, idad_attach), 98 DEVMETHOD(device_detach, idad_detach), 99 { 0, 0 } 100 }; 101 102 static driver_t idad_driver = { 103 "idad", 104 idad_methods, 105 sizeof(struct idad_softc) 106 }; 107 108 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0); 109 110 static __inline struct idad_softc * 111 idad_getsoftc(dev_t dev) 112 { 113 114 return ((struct idad_softc *)dev->si_drv1); 115 } 116 117 static int 118 idad_open(dev_t dev, int flags, int fmt, d_thread_t *td) 119 { 120 struct idad_softc *drv; 121 struct disklabel *label; 122 123 drv = idad_getsoftc(dev); 124 if (drv == NULL) 125 return (ENXIO); 126 127 label = &drv->disk.d_label; 128 bzero(label, sizeof(*label)); 129 label->d_type = DTYPE_SCSI; 130 label->d_secsize = drv->secsize; 131 label->d_nsectors = drv->sectors; 132 label->d_ntracks = drv->heads; 133 label->d_ncylinders = drv->cylinders; 134 label->d_secpercyl = drv->sectors * drv->heads; 135 label->d_secperunit = drv->secperunit; 136 137 return (0); 138 } 139 140 static int 141 idad_close(dev_t dev, int flags, int fmt, d_thread_t *td) 142 { 143 struct idad_softc *drv; 144 145 drv = idad_getsoftc(dev); 146 if (drv == NULL) 147 return (ENXIO); 148 return (0); 149 } 150 151 /* 152 * Read/write routine for a buffer. Finds the proper unit, range checks 153 * arguments, and schedules the transfer. Does not wait for the transfer 154 * to complete. Multi-page transfers are supported. All I/O requests must 155 * be a multiple of a sector in length. 156 */ 157 static void 158 idad_strategy(struct buf *bp) 159 { 160 struct idad_softc *drv; 161 int s; 162 163 drv = idad_getsoftc(bp->b_dev); 164 if (drv == NULL) { 165 bp->b_error = EINVAL; 166 goto bad; 167 } 168 169 /* 170 * software write protect check 171 */ 172 if (drv->flags & DRV_WRITEPROT && (bp->b_flags & B_READ) == 0) { 173 bp->b_error = EROFS; 174 goto bad; 175 } 176 177 /* 178 * If it's a null transfer, return immediately 179 */ 180 if (bp->b_bcount == 0) 181 goto done; 182 183 bp->b_driver1 = drv; 184 s = splbio(); 185 devstat_start_transaction(&drv->stats); 186 ida_submit_buf(drv->controller, bp); 187 splx(s); 188 return; 189 190 bad: 191 bp->b_flags |= B_ERROR; 192 193 done: 194 /* 195 * Correctly set the buf to indicate a completed transfer 196 */ 197 bp->b_resid = bp->b_bcount; 198 biodone(bp); 199 return; 200 } 201 202 static int 203 idad_dump(dev_t dev, u_int count, u_int blkno, u_int secsize) 204 { 205 struct idad_softc *drv; 206 long blkcnt; 207 int i, error, dumppages; 208 caddr_t va; 209 vm_offset_t addr, a; 210 211 drv = idad_getsoftc(dev); 212 if (drv == NULL) 213 return (ENXIO); 214 215 addr = 0; 216 blkcnt = howmany(PAGE_SIZE, secsize); 217 218 while (count > 0) { 219 va = NULL; 220 221 dumppages = imin(count / blkcnt, MAXDUMPPGS); 222 223 for (i = 0; i < dumppages; i++) { 224 a = addr + (i * PAGE_SIZE); 225 if (is_physical_memory(a)) 226 va = pmap_kenter_temporary(trunc_page(a), i); 227 else 228 va = pmap_kenter_temporary(trunc_page(0), i); 229 } 230 231 error = ida_command(drv->controller, CMD_WRITE, va, 232 PAGE_SIZE * dumppages, drv->drive, blkno, DMA_DATA_OUT); 233 if (error) 234 return (error); 235 236 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0) 237 return (EINTR); 238 239 blkno += blkcnt * dumppages; 240 count -= blkcnt * dumppages; 241 addr += PAGE_SIZE * dumppages; 242 } 243 return (0); 244 } 245 246 void 247 idad_intr(struct buf *bp) 248 { 249 struct idad_softc *drv = (struct idad_softc *)bp->b_driver1; 250 251 if (bp->b_flags & B_ERROR) 252 bp->b_error = EIO; 253 else 254 bp->b_resid = 0; 255 256 devstat_end_transaction_buf(&drv->stats, bp); 257 biodone(bp); 258 } 259 260 static int 261 idad_probe(device_t dev) 262 { 263 264 device_set_desc(dev, "Compaq Logical Drive"); 265 return (0); 266 } 267 268 static int 269 idad_attach(device_t dev) 270 { 271 struct ida_drive_info dinfo; 272 struct idad_softc *drv; 273 device_t parent; 274 dev_t dsk; 275 int error; 276 277 drv = (struct idad_softc *)device_get_softc(dev); 278 parent = device_get_parent(dev); 279 drv->controller = (struct ida_softc *)device_get_softc(parent); 280 drv->unit = device_get_unit(dev); 281 drv->drive = drv->controller->num_drives; 282 drv->controller->num_drives++; 283 284 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 285 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 286 if (error) { 287 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 288 return (ENXIO); 289 } 290 291 drv->cylinders = dinfo.ncylinders; 292 drv->heads = dinfo.nheads; 293 drv->sectors = dinfo.nsectors; 294 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 295 drv->secperunit = dinfo.secperunit; 296 297 /* XXX 298 * other initialization 299 */ 300 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 301 drv->secperunit / ((1024 * 1024) / drv->secsize), 302 drv->secperunit, drv->secsize); 303 304 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 305 DEVSTAT_NO_ORDERED_TAGS, 306 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 307 DEVSTAT_PRIORITY_ARRAY); 308 309 dsk = disk_create(drv->unit, &drv->disk, 0, &id_cdevsw); 310 311 dsk->si_drv1 = drv; 312 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */ 313 314 return (0); 315 } 316 317 static int 318 idad_detach(device_t dev) 319 { 320 struct idad_softc *drv; 321 322 drv = (struct idad_softc *)device_get_softc(dev); 323 devstat_remove_entry(&drv->stats); 324 disk_destroy(&drv->disk); 325 return (0); 326 } 327