1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1999,2000 Jonathan Lemon 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 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 #include <sys/module.h> 37 38 #include <sys/bio.h> 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 #include <sys/cons.h> 42 #include <sys/lock.h> 43 #include <sys/mutex.h> 44 45 #include <machine/bus.h> 46 #include <sys/rman.h> 47 48 #include <vm/vm.h> 49 #include <vm/pmap.h> 50 #include <machine/md_var.h> 51 52 #include <geom/geom_disk.h> 53 54 #include <dev/ida/idareg.h> 55 #include <dev/ida/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_strategy_t idad_strategy; 63 static dumper_t idad_dump; 64 65 static device_method_t idad_methods[] = { 66 DEVMETHOD(device_probe, idad_probe), 67 DEVMETHOD(device_attach, idad_attach), 68 DEVMETHOD(device_detach, idad_detach), 69 { 0, 0 } 70 }; 71 72 static driver_t idad_driver = { 73 "idad", 74 idad_methods, 75 sizeof(struct idad_softc) 76 }; 77 78 DRIVER_MODULE(idad, ida, idad_driver, 0, 0); 79 80 /* 81 * Read/write routine for a buffer. Finds the proper unit, range checks 82 * arguments, and schedules the transfer. Does not wait for the transfer 83 * to complete. Multi-page transfers are supported. All I/O requests must 84 * be a multiple of a sector in length. 85 */ 86 static void 87 idad_strategy(struct bio *bp) 88 { 89 struct idad_softc *drv; 90 91 drv = bp->bio_disk->d_drv1; 92 if (drv == NULL) { 93 bp->bio_error = EINVAL; 94 goto bad; 95 } 96 97 /* 98 * software write protect check 99 */ 100 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 101 bp->bio_error = EROFS; 102 goto bad; 103 } 104 105 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) { 106 bp->bio_error = EOPNOTSUPP; 107 goto bad; 108 } 109 110 bp->bio_driver1 = drv; 111 ida_submit_buf(drv->controller, bp); 112 return; 113 114 bad: 115 bp->bio_flags |= BIO_ERROR; 116 117 /* 118 * Correctly set the buf to indicate a completed transfer 119 */ 120 bp->bio_resid = bp->bio_bcount; 121 biodone(bp); 122 return; 123 } 124 125 static int 126 idad_dump(void *arg, void *virtual, off_t offset, size_t length) 127 { 128 129 struct idad_softc *drv; 130 int error = 0; 131 struct disk *dp; 132 133 dp = arg; 134 drv = dp->d_drv1; 135 if (drv == NULL) 136 return (ENXIO); 137 138 drv->controller->flags &= ~IDA_INTERRUPTS; 139 140 if (length > 0) { 141 error = ida_command(drv->controller, CMD_WRITE, virtual, 142 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT); 143 } 144 drv->controller->flags |= IDA_INTERRUPTS; 145 return (error); 146 } 147 148 void 149 idad_intr(struct bio *bp) 150 { 151 152 if (bp->bio_flags & BIO_ERROR) 153 bp->bio_error = EIO; 154 else 155 bp->bio_resid = 0; 156 157 biodone(bp); 158 } 159 160 static int 161 idad_probe(device_t dev) 162 { 163 164 device_set_desc(dev, "Compaq Logical Drive"); 165 return (0); 166 } 167 168 static int 169 idad_attach(device_t dev) 170 { 171 struct ida_drive_info dinfo; 172 struct idad_softc *drv; 173 device_t parent; 174 int error; 175 176 drv = (struct idad_softc *)device_get_softc(dev); 177 parent = device_get_parent(dev); 178 drv->dev = dev; 179 drv->controller = (struct ida_softc *)device_get_softc(parent); 180 drv->unit = device_get_unit(dev); 181 drv->drive = (intptr_t)device_get_ivars(dev); 182 183 mtx_lock(&drv->controller->lock); 184 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 185 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 186 mtx_unlock(&drv->controller->lock); 187 if (error) { 188 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 189 return (ENXIO); 190 } 191 192 drv->cylinders = dinfo.dp.ncylinders; 193 drv->heads = dinfo.dp.nheads; 194 drv->sectors = dinfo.dp.nsectors; 195 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 196 drv->secperunit = dinfo.secperunit; 197 198 /* XXX 199 * other initialization 200 */ 201 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 202 drv->secperunit / ((1024 * 1024) / drv->secsize), 203 drv->secperunit, drv->secsize); 204 205 drv->disk = disk_alloc(); 206 drv->disk->d_strategy = idad_strategy; 207 drv->disk->d_name = "idad"; 208 drv->disk->d_dump = idad_dump; 209 drv->disk->d_sectorsize = drv->secsize; 210 drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize; 211 drv->disk->d_fwsectors = drv->sectors; 212 drv->disk->d_fwheads = drv->heads; 213 drv->disk->d_drv1 = drv; 214 drv->disk->d_maxsize = DFLTPHYS; /* XXX guess? */ 215 drv->disk->d_unit = drv->unit; 216 disk_create(drv->disk, DISK_VERSION); 217 218 return (0); 219 } 220 221 static int 222 idad_detach(device_t dev) 223 { 224 struct idad_softc *drv; 225 226 drv = (struct idad_softc *)device_get_softc(dev); 227 disk_destroy(drv->disk); 228 return (0); 229 } 230