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 * $FreeBSD$ 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 43 #include <machine/bus_memio.h> 44 #include <machine/bus_pio.h> 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 devclass_t idad_devclass; 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, idad_devclass, 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 int s; 93 94 drv = bp->bio_disk->d_drv1; 95 if (drv == NULL) { 96 bp->bio_error = EINVAL; 97 goto bad; 98 } 99 100 /* 101 * software write protect check 102 */ 103 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 104 bp->bio_error = EROFS; 105 goto bad; 106 } 107 108 bp->bio_driver1 = drv; 109 s = splbio(); 110 ida_submit_buf(drv->controller, bp); 111 splx(s); 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, vm_offset_t physical, 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 struct idad_softc *drv; 152 153 drv = bp->bio_disk->d_drv1; 154 155 if (bp->bio_flags & BIO_ERROR) 156 bp->bio_error = EIO; 157 else 158 bp->bio_resid = 0; 159 160 biodone(bp); 161 } 162 163 static int 164 idad_probe(device_t dev) 165 { 166 167 device_set_desc(dev, "Compaq Logical Drive"); 168 return (0); 169 } 170 171 static int 172 idad_attach(device_t dev) 173 { 174 struct ida_drive_info dinfo; 175 struct idad_softc *drv; 176 device_t parent; 177 int error; 178 179 drv = (struct idad_softc *)device_get_softc(dev); 180 parent = device_get_parent(dev); 181 drv->dev = dev; 182 drv->controller = (struct ida_softc *)device_get_softc(parent); 183 drv->unit = device_get_unit(dev); 184 drv->drive = drv->controller->num_drives; 185 drv->controller->num_drives++; 186 187 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 188 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 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 drv->disk->d_flags = DISKFLAG_NEEDSGIANT; 219 disk_create(drv->disk, DISK_VERSION); 220 221 return (0); 222 } 223 224 static int 225 idad_detach(device_t dev) 226 { 227 struct idad_softc *drv; 228 229 drv = (struct idad_softc *)device_get_softc(dev); 230 disk_destroy(drv->disk); 231 return (0); 232 } 233