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