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 1.12 2006/07/28 02:17:37 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 #include <sys/thread2.h> 54 55 #include <vm/vm.h> 56 #include <vm/pmap.h> 57 #include <machine/md_var.h> 58 59 #include "idareg.h" 60 #include "idavar.h" 61 62 /* prototypes */ 63 static int idad_probe(device_t dev); 64 static int idad_attach(device_t dev); 65 static int idad_detach(device_t dev); 66 67 static d_open_t idad_open; 68 static d_close_t idad_close; 69 static d_strategy_t idad_strategy; 70 static d_dump_t idad_dump; 71 72 #define IDAD_BDEV_MAJOR 29 73 #define IDAD_CDEV_MAJOR 109 74 75 static struct dev_ops id_ops = { 76 { "idad", IDAD_CDEV_MAJOR, D_DISK }, 77 .d_open = idad_open, 78 .d_close = idad_close, 79 .d_read = physread, 80 .d_write = physwrite, 81 .d_strategy = idad_strategy, 82 .d_dump = idad_dump, 83 }; 84 85 static devclass_t idad_devclass; 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(struct dev_open_args *ap) 111 { 112 dev_t dev = ap->a_head.a_dev; 113 struct idad_softc *drv; 114 struct disklabel *label; 115 116 drv = idad_getsoftc(dev); 117 if (drv == NULL) 118 return (ENXIO); 119 120 label = &drv->disk.d_label; 121 bzero(label, sizeof(*label)); 122 label->d_type = DTYPE_SCSI; 123 label->d_secsize = drv->secsize; 124 label->d_nsectors = drv->sectors; 125 label->d_ntracks = drv->heads; 126 label->d_ncylinders = drv->cylinders; 127 label->d_secpercyl = drv->sectors * drv->heads; 128 label->d_secperunit = drv->secperunit; 129 130 return (0); 131 } 132 133 static int 134 idad_close(struct dev_close_args *ap) 135 { 136 dev_t dev = ap->a_head.a_dev; 137 struct idad_softc *drv; 138 139 drv = idad_getsoftc(dev); 140 if (drv == NULL) 141 return (ENXIO); 142 return (0); 143 } 144 145 /* 146 * Read/write routine for a buffer. Finds the proper unit, range checks 147 * arguments, and schedules the transfer. Does not wait for the transfer 148 * to complete. Multi-page transfers are supported. All I/O requests must 149 * be a multiple of a sector in length. 150 */ 151 static int 152 idad_strategy(struct dev_strategy_args *ap) 153 { 154 dev_t dev = ap->a_head.a_dev; 155 struct bio *bio = ap->a_bio; 156 struct buf *bp = bio->bio_buf; 157 struct idad_softc *drv; 158 159 drv = idad_getsoftc(dev); 160 if (drv == NULL) { 161 bp->b_error = EINVAL; 162 goto bad; 163 } 164 165 /* 166 * software write protect check 167 */ 168 if ((drv->flags & DRV_WRITEPROT) && bp->b_cmd != BUF_CMD_READ) { 169 bp->b_error = EROFS; 170 goto bad; 171 } 172 173 /* 174 * If it's a null transfer, return immediately 175 */ 176 if (bp->b_bcount == 0) 177 goto done; 178 179 bio->bio_driver_info = drv; 180 crit_enter(); 181 devstat_start_transaction(&drv->stats); 182 ida_submit_buf(drv->controller, bio); 183 crit_exit(); 184 return(0); 185 186 bad: 187 bp->b_flags |= B_ERROR; 188 189 done: 190 /* 191 * Correctly set the buf to indicate a completed transfer 192 */ 193 bp->b_resid = bp->b_bcount; 194 biodone(bio); 195 return(0); 196 } 197 198 static int 199 idad_dump(struct dev_dump_args *ap) 200 { 201 dev_t dev = ap->a_head.a_dev; 202 struct idad_softc *drv; 203 long blkcnt; 204 int i, error, dumppages; 205 caddr_t va; 206 vm_offset_t addr, a; 207 208 drv = idad_getsoftc(dev); 209 if (drv == NULL) 210 return (ENXIO); 211 212 addr = 0; 213 blkcnt = howmany(PAGE_SIZE, ap->a_secsize); 214 215 while (ap->a_count > 0) { 216 va = NULL; 217 218 dumppages = imin(ap->a_count / blkcnt, MAXDUMPPGS); 219 220 for (i = 0; i < dumppages; i++) { 221 a = addr + (i * PAGE_SIZE); 222 if (is_physical_memory(a)) 223 va = pmap_kenter_temporary(trunc_page(a), i); 224 else 225 va = pmap_kenter_temporary(trunc_page(0), i); 226 } 227 228 error = ida_command(drv->controller, CMD_WRITE, va, 229 PAGE_SIZE * dumppages, drv->drive, ap->a_blkno, DMA_DATA_OUT); 230 if (error) 231 return (error); 232 233 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0) 234 return (EINTR); 235 236 ap->a_blkno += blkcnt * dumppages; 237 ap->a_count -= blkcnt * dumppages; 238 addr += PAGE_SIZE * dumppages; 239 } 240 return (0); 241 } 242 243 void 244 idad_intr(struct bio *bio) 245 { 246 struct idad_softc *drv = (struct idad_softc *)bio->bio_driver_info; 247 struct buf *bp = bio->bio_buf; 248 249 if (bp->b_flags & B_ERROR) 250 bp->b_error = EIO; 251 else 252 bp->b_resid = 0; 253 254 devstat_end_transaction_buf(&drv->stats, bp); 255 biodone(bio); 256 } 257 258 static int 259 idad_probe(device_t dev) 260 { 261 262 device_set_desc(dev, "Compaq Logical Drive"); 263 return (0); 264 } 265 266 static int 267 idad_attach(device_t dev) 268 { 269 struct ida_drive_info dinfo; 270 struct idad_softc *drv; 271 device_t parent; 272 dev_t dsk; 273 int error; 274 275 drv = (struct idad_softc *)device_get_softc(dev); 276 parent = device_get_parent(dev); 277 drv->controller = (struct ida_softc *)device_get_softc(parent); 278 drv->unit = device_get_unit(dev); 279 drv->drive = drv->controller->num_drives; 280 drv->controller->num_drives++; 281 282 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 283 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 284 if (error) { 285 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 286 return (ENXIO); 287 } 288 289 drv->cylinders = dinfo.ncylinders; 290 drv->heads = dinfo.nheads; 291 drv->sectors = dinfo.nsectors; 292 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 293 drv->secperunit = dinfo.secperunit; 294 295 /* XXX 296 * other initialization 297 */ 298 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 299 drv->secperunit / ((1024 * 1024) / drv->secsize), 300 drv->secperunit, drv->secsize); 301 302 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 303 DEVSTAT_NO_ORDERED_TAGS, 304 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 305 DEVSTAT_PRIORITY_ARRAY); 306 307 dsk = disk_create(drv->unit, &drv->disk, 0, &id_ops); 308 309 dsk->si_drv1 = drv; 310 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */ 311 312 return (0); 313 } 314 315 static int 316 idad_detach(device_t dev) 317 { 318 struct idad_softc *drv; 319 320 drv = (struct idad_softc *)device_get_softc(dev); 321 devstat_remove_entry(&drv->stats); 322 disk_destroy(&drv->disk); 323 return (0); 324 } 325