1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 29 */ 30 31 /* 32 * Disk driver for Compaq SMART RAID adapters. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 40 #include <sys/bio.h> 41 #include <sys/bus.h> 42 #include <sys/conf.h> 43 #include <sys/cons.h> 44 #include <sys/lock.h> 45 #include <sys/mutex.h> 46 47 #include <machine/bus.h> 48 #include <sys/rman.h> 49 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 #include <machine/md_var.h> 53 54 #include <geom/geom_disk.h> 55 56 #include <dev/ida/idareg.h> 57 #include <dev/ida/idavar.h> 58 59 /* prototypes */ 60 static int idad_probe(device_t dev); 61 static int idad_attach(device_t dev); 62 static int idad_detach(device_t dev); 63 64 static d_strategy_t idad_strategy; 65 static dumper_t idad_dump; 66 67 static device_method_t idad_methods[] = { 68 DEVMETHOD(device_probe, idad_probe), 69 DEVMETHOD(device_attach, idad_attach), 70 DEVMETHOD(device_detach, idad_detach), 71 { 0, 0 } 72 }; 73 74 static driver_t idad_driver = { 75 "idad", 76 idad_methods, 77 sizeof(struct idad_softc) 78 }; 79 80 DRIVER_MODULE(idad, ida, idad_driver, 0, 0); 81 82 /* 83 * Read/write routine for a buffer. Finds the proper unit, range checks 84 * arguments, and schedules the transfer. Does not wait for the transfer 85 * to complete. Multi-page transfers are supported. All I/O requests must 86 * be a multiple of a sector in length. 87 */ 88 static void 89 idad_strategy(struct bio *bp) 90 { 91 struct idad_softc *drv; 92 93 drv = bp->bio_disk->d_drv1; 94 if (drv == NULL) { 95 bp->bio_error = EINVAL; 96 goto bad; 97 } 98 99 /* 100 * software write protect check 101 */ 102 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 103 bp->bio_error = EROFS; 104 goto bad; 105 } 106 107 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) { 108 bp->bio_error = EOPNOTSUPP; 109 goto bad; 110 } 111 112 bp->bio_driver1 = drv; 113 ida_submit_buf(drv->controller, bp); 114 return; 115 116 bad: 117 bp->bio_flags |= BIO_ERROR; 118 119 /* 120 * Correctly set the buf to indicate a completed transfer 121 */ 122 bp->bio_resid = bp->bio_bcount; 123 biodone(bp); 124 return; 125 } 126 127 static int 128 idad_dump(void *arg, void *virtual, off_t offset, size_t length) 129 { 130 131 struct idad_softc *drv; 132 int error = 0; 133 struct disk *dp; 134 135 dp = arg; 136 drv = dp->d_drv1; 137 if (drv == NULL) 138 return (ENXIO); 139 140 drv->controller->flags &= ~IDA_INTERRUPTS; 141 142 if (length > 0) { 143 error = ida_command(drv->controller, CMD_WRITE, virtual, 144 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT); 145 } 146 drv->controller->flags |= IDA_INTERRUPTS; 147 return (error); 148 } 149 150 void 151 idad_intr(struct bio *bp) 152 { 153 154 if (bp->bio_flags & BIO_ERROR) 155 bp->bio_error = EIO; 156 else 157 bp->bio_resid = 0; 158 159 biodone(bp); 160 } 161 162 static int 163 idad_probe(device_t dev) 164 { 165 166 device_set_desc(dev, "Compaq Logical Drive"); 167 return (0); 168 } 169 170 static int 171 idad_attach(device_t dev) 172 { 173 struct ida_drive_info dinfo; 174 struct idad_softc *drv; 175 device_t parent; 176 int error; 177 178 drv = (struct idad_softc *)device_get_softc(dev); 179 parent = device_get_parent(dev); 180 drv->dev = dev; 181 drv->controller = (struct ida_softc *)device_get_softc(parent); 182 drv->unit = device_get_unit(dev); 183 drv->drive = (intptr_t)device_get_ivars(dev); 184 185 mtx_lock(&drv->controller->lock); 186 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 187 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 188 mtx_unlock(&drv->controller->lock); 189 if (error) { 190 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 191 return (ENXIO); 192 } 193 194 drv->cylinders = dinfo.dp.ncylinders; 195 drv->heads = dinfo.dp.nheads; 196 drv->sectors = dinfo.dp.nsectors; 197 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 198 drv->secperunit = dinfo.secperunit; 199 200 /* XXX 201 * other initialization 202 */ 203 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 204 drv->secperunit / ((1024 * 1024) / drv->secsize), 205 drv->secperunit, drv->secsize); 206 207 drv->disk = disk_alloc(); 208 drv->disk->d_strategy = idad_strategy; 209 drv->disk->d_name = "idad"; 210 drv->disk->d_dump = idad_dump; 211 drv->disk->d_sectorsize = drv->secsize; 212 drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize; 213 drv->disk->d_fwsectors = drv->sectors; 214 drv->disk->d_fwheads = drv->heads; 215 drv->disk->d_drv1 = drv; 216 drv->disk->d_maxsize = DFLTPHYS; /* XXX guess? */ 217 drv->disk->d_unit = drv->unit; 218 disk_create(drv->disk, DISK_VERSION); 219 220 return (0); 221 } 222 223 static int 224 idad_detach(device_t dev) 225 { 226 struct idad_softc *drv; 227 228 drv = (struct idad_softc *)device_get_softc(dev); 229 disk_destroy(drv->disk); 230 return (0); 231 } 232