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 devclass_t idad_devclass; 68 69 static device_method_t idad_methods[] = { 70 DEVMETHOD(device_probe, idad_probe), 71 DEVMETHOD(device_attach, idad_attach), 72 DEVMETHOD(device_detach, idad_detach), 73 { 0, 0 } 74 }; 75 76 static driver_t idad_driver = { 77 "idad", 78 idad_methods, 79 sizeof(struct idad_softc) 80 }; 81 82 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0); 83 84 /* 85 * Read/write routine for a buffer. Finds the proper unit, range checks 86 * arguments, and schedules the transfer. Does not wait for the transfer 87 * to complete. Multi-page transfers are supported. All I/O requests must 88 * be a multiple of a sector in length. 89 */ 90 static void 91 idad_strategy(struct bio *bp) 92 { 93 struct idad_softc *drv; 94 95 drv = bp->bio_disk->d_drv1; 96 if (drv == NULL) { 97 bp->bio_error = EINVAL; 98 goto bad; 99 } 100 101 /* 102 * software write protect check 103 */ 104 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 105 bp->bio_error = EROFS; 106 goto bad; 107 } 108 109 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) { 110 bp->bio_error = EOPNOTSUPP; 111 goto bad; 112 } 113 114 bp->bio_driver1 = drv; 115 ida_submit_buf(drv->controller, bp); 116 return; 117 118 bad: 119 bp->bio_flags |= BIO_ERROR; 120 121 /* 122 * Correctly set the buf to indicate a completed transfer 123 */ 124 bp->bio_resid = bp->bio_bcount; 125 biodone(bp); 126 return; 127 } 128 129 static int 130 idad_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 131 { 132 133 struct idad_softc *drv; 134 int error = 0; 135 struct disk *dp; 136 137 dp = arg; 138 drv = dp->d_drv1; 139 if (drv == NULL) 140 return (ENXIO); 141 142 drv->controller->flags &= ~IDA_INTERRUPTS; 143 144 if (length > 0) { 145 error = ida_command(drv->controller, CMD_WRITE, virtual, 146 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT); 147 } 148 drv->controller->flags |= IDA_INTERRUPTS; 149 return (error); 150 } 151 152 void 153 idad_intr(struct bio *bp) 154 { 155 156 if (bp->bio_flags & BIO_ERROR) 157 bp->bio_error = EIO; 158 else 159 bp->bio_resid = 0; 160 161 biodone(bp); 162 } 163 164 static int 165 idad_probe(device_t dev) 166 { 167 168 device_set_desc(dev, "Compaq Logical Drive"); 169 return (0); 170 } 171 172 static int 173 idad_attach(device_t dev) 174 { 175 struct ida_drive_info dinfo; 176 struct idad_softc *drv; 177 device_t parent; 178 int error; 179 180 drv = (struct idad_softc *)device_get_softc(dev); 181 parent = device_get_parent(dev); 182 drv->dev = dev; 183 drv->controller = (struct ida_softc *)device_get_softc(parent); 184 drv->unit = device_get_unit(dev); 185 drv->drive = (intptr_t)device_get_ivars(dev); 186 187 mtx_lock(&drv->controller->lock); 188 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 189 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 190 mtx_unlock(&drv->controller->lock); 191 if (error) { 192 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 193 return (ENXIO); 194 } 195 196 drv->cylinders = dinfo.dp.ncylinders; 197 drv->heads = dinfo.dp.nheads; 198 drv->sectors = dinfo.dp.nsectors; 199 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 200 drv->secperunit = dinfo.secperunit; 201 202 /* XXX 203 * other initialization 204 */ 205 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 206 drv->secperunit / ((1024 * 1024) / drv->secsize), 207 drv->secperunit, drv->secsize); 208 209 drv->disk = disk_alloc(); 210 drv->disk->d_strategy = idad_strategy; 211 drv->disk->d_name = "idad"; 212 drv->disk->d_dump = idad_dump; 213 drv->disk->d_sectorsize = drv->secsize; 214 drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize; 215 drv->disk->d_fwsectors = drv->sectors; 216 drv->disk->d_fwheads = drv->heads; 217 drv->disk->d_drv1 = drv; 218 drv->disk->d_maxsize = DFLTPHYS; /* XXX guess? */ 219 drv->disk->d_unit = drv->unit; 220 disk_create(drv->disk, DISK_VERSION); 221 222 return (0); 223 } 224 225 static int 226 idad_detach(device_t dev) 227 { 228 struct idad_softc *drv; 229 230 drv = (struct idad_softc *)device_get_softc(dev); 231 disk_destroy(drv->disk); 232 return (0); 233 } 234