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 */ 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/malloc.h> 36 #include <sys/kernel.h> 37 38 #include <sys/buf.h> 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 #include <sys/cons.h> 42 #include <sys/devicestat.h> 43 #include <sys/disk.h> 44 #include <sys/dtype.h> 45 #include <sys/rman.h> 46 #include <sys/thread2.h> 47 48 #include <machine/clock.h> 49 #include <machine/md_var.h> 50 51 #include <vm/vm.h> 52 #include <vm/pmap.h> 53 54 #include "idareg.h" 55 #include "idavar.h" 56 57 /* prototypes */ 58 static int idad_probe(device_t dev); 59 static int idad_attach(device_t dev); 60 static int idad_detach(device_t dev); 61 62 static d_open_t idad_open; 63 static d_close_t idad_close; 64 static d_strategy_t idad_strategy; 65 static d_dump_t idad_dump; 66 67 static struct dev_ops id_ops = { 68 { "idad", 0, D_DISK }, 69 .d_open = idad_open, 70 .d_close = idad_close, 71 .d_read = physread, 72 .d_write = physwrite, 73 .d_strategy = idad_strategy, 74 .d_dump = idad_dump, 75 }; 76 77 static devclass_t idad_devclass; 78 79 static device_method_t idad_methods[] = { 80 DEVMETHOD(device_probe, idad_probe), 81 DEVMETHOD(device_attach, idad_attach), 82 DEVMETHOD(device_detach, idad_detach), 83 DEVMETHOD_END 84 }; 85 86 static driver_t idad_driver = { 87 "idad", 88 idad_methods, 89 sizeof(struct idad_softc) 90 }; 91 92 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, NULL, NULL); 93 94 static __inline struct idad_softc * 95 idad_getsoftc(cdev_t dev) 96 { 97 98 return ((struct idad_softc *)dev->si_drv1); 99 } 100 101 static int 102 idad_open(struct dev_open_args *ap) 103 { 104 cdev_t dev = ap->a_head.a_dev; 105 struct idad_softc *drv; 106 107 drv = idad_getsoftc(dev); 108 if (drv == NULL) 109 return (ENXIO); 110 #if 0 111 bzero(&info, sizeof(info)); 112 info.d_media_blksize = drv->secsize; /* mandatory */ 113 info.d_media_blocks = drv->secperunit; 114 115 info.d_secpertrack = drv->sectors; /* optional */ 116 info.d_type = DTYPE_SCSI; 117 info.d_nheads = drv->heads; 118 info.d_ncylinders = drv->cylinders; 119 info.d_secpercyl = drv->sectors * drv->heads; 120 121 disk_setdiskinfo(&drv->disk, &info); 122 #endif 123 return (0); 124 } 125 126 static int 127 idad_close(struct dev_close_args *ap) 128 { 129 cdev_t dev = ap->a_head.a_dev; 130 struct idad_softc *drv; 131 132 drv = idad_getsoftc(dev); 133 if (drv == NULL) 134 return (ENXIO); 135 return (0); 136 } 137 138 /* 139 * Read/write routine for a buffer. Finds the proper unit, range checks 140 * arguments, and schedules the transfer. Does not wait for the transfer 141 * to complete. Multi-page transfers are supported. All I/O requests must 142 * be a multiple of a sector in length. 143 */ 144 static int 145 idad_strategy(struct dev_strategy_args *ap) 146 { 147 cdev_t dev = ap->a_head.a_dev; 148 struct bio *bio = ap->a_bio; 149 struct buf *bp = bio->bio_buf; 150 struct idad_softc *drv; 151 152 drv = idad_getsoftc(dev); 153 if (drv == NULL) { 154 bp->b_error = EINVAL; 155 goto bad; 156 } 157 158 /* 159 * software write protect check 160 */ 161 if ((drv->flags & DRV_WRITEPROT) && bp->b_cmd != BUF_CMD_READ) { 162 bp->b_error = EROFS; 163 goto bad; 164 } 165 166 /* 167 * If it's a null transfer, return immediately 168 */ 169 if (bp->b_bcount == 0) 170 goto done; 171 172 bio->bio_driver_info = drv; 173 crit_enter(); 174 devstat_start_transaction(&drv->stats); 175 ida_submit_buf(drv->controller, bio); 176 crit_exit(); 177 return(0); 178 179 bad: 180 bp->b_flags |= B_ERROR; 181 182 done: 183 /* 184 * Correctly set the buf to indicate a completed transfer 185 */ 186 bp->b_resid = bp->b_bcount; 187 biodone(bio); 188 return(0); 189 } 190 191 static int 192 idad_dump(struct dev_dump_args *ap) 193 { 194 cdev_t dev = ap->a_head.a_dev; 195 struct idad_softc *drv; 196 int error = 0; 197 198 drv = idad_getsoftc(dev); 199 if (drv == NULL) 200 return (ENXIO); 201 202 drv->controller->flags &= ~IDA_INTERRUPTS; 203 204 if (ap->a_length > 0) { 205 error = ida_command(drv->controller, CMD_WRITE, ap->a_virtual, 206 ap->a_length, drv->drive, ap->a_offset / DEV_BSIZE, DMA_DATA_OUT); 207 } 208 drv->controller->flags |= IDA_INTERRUPTS; 209 return (error); 210 211 } 212 213 void 214 idad_intr(struct bio *bio) 215 { 216 struct idad_softc *drv = (struct idad_softc *)bio->bio_driver_info; 217 struct buf *bp = bio->bio_buf; 218 219 if (bp->b_flags & B_ERROR) 220 bp->b_error = EIO; 221 else 222 bp->b_resid = 0; 223 224 devstat_end_transaction_buf(&drv->stats, bp); 225 biodone(bio); 226 } 227 228 static int 229 idad_probe(device_t dev) 230 { 231 232 device_set_desc(dev, "Compaq Logical Drive"); 233 return (0); 234 } 235 236 static int 237 idad_attach(device_t dev) 238 { 239 struct ida_drive_info dinfo; 240 struct disk_info info; 241 struct idad_softc *drv; 242 device_t parent; 243 cdev_t dsk; 244 int error; 245 246 drv = (struct idad_softc *)device_get_softc(dev); 247 parent = device_get_parent(dev); 248 drv->controller = (struct ida_softc *)device_get_softc(parent); 249 drv->unit = device_get_unit(dev); 250 drv->drive = drv->controller->num_drives; 251 drv->controller->num_drives++; 252 253 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 254 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 255 if (error) { 256 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 257 return (ENXIO); 258 } 259 260 drv->cylinders = dinfo.ncylinders; 261 drv->heads = dinfo.nheads; 262 drv->sectors = dinfo.nsectors; 263 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 264 drv->secperunit = dinfo.secperunit; 265 266 /* XXX 267 * other initialization 268 */ 269 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 270 drv->secperunit / ((1024 * 1024) / drv->secsize), 271 drv->secperunit, drv->secsize); 272 273 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, 274 DEVSTAT_NO_ORDERED_TAGS, 275 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, 276 DEVSTAT_PRIORITY_ARRAY); 277 278 dsk = disk_create(drv->unit, &drv->disk, &id_ops); 279 280 dsk->si_drv1 = drv; 281 dsk->si_iosize_max = min(MAXPHYS,64*1024); /* XXX guess? */ 282 283 /* 284 * Set disk info, as it appears that all needed data is available already. 285 * Setting the disk info will also cause the probing to start. 286 */ 287 bzero(&info, sizeof(info)); 288 info.d_media_blksize = drv->secsize; /* mandatory */ 289 info.d_media_blocks = drv->secperunit; 290 291 info.d_secpertrack = drv->sectors; /* optional */ 292 info.d_type = DTYPE_SCSI; 293 info.d_nheads = drv->heads; 294 info.d_ncylinders = drv->cylinders; 295 info.d_secpercyl = drv->sectors * drv->heads; 296 297 disk_setdiskinfo(&drv->disk, &info); 298 299 return (0); 300 } 301 302 static int 303 idad_detach(device_t dev) 304 { 305 struct idad_softc *drv; 306 307 drv = (struct idad_softc *)device_get_softc(dev); 308 devstat_remove_entry(&drv->stats); 309 disk_destroy(&drv->disk); 310 return (0); 311 } 312