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 #include <sys/disk.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 <dev/ida/idareg.h> 53 #include <dev/ida/idavar.h> 54 55 /* prototypes */ 56 static int idad_probe(device_t dev); 57 static int idad_attach(device_t dev); 58 static int idad_detach(device_t dev); 59 60 static d_strategy_t idad_strategy; 61 static dumper_t idad_dump; 62 63 static devclass_t idad_devclass; 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, idad_devclass, 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 int s; 91 92 drv = bp->bio_disk->d_drv1; 93 if (drv == NULL) { 94 bp->bio_error = EINVAL; 95 goto bad; 96 } 97 98 /* 99 * software write protect check 100 */ 101 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 102 bp->bio_error = EROFS; 103 goto bad; 104 } 105 106 s = splbio(); 107 ida_submit_buf(drv->controller, bp); 108 splx(s); 109 return; 110 111 bad: 112 bp->bio_flags |= BIO_ERROR; 113 114 /* 115 * Correctly set the buf to indicate a completed transfer 116 */ 117 bp->bio_resid = bp->bio_bcount; 118 biodone(bp); 119 return; 120 } 121 122 static int 123 idad_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 124 { 125 126 struct idad_softc *drv; 127 int error = 0; 128 struct disk *dp; 129 130 dp = arg; 131 drv = dp->d_drv1; 132 if (drv == NULL) 133 return (ENXIO); 134 135 drv->controller->flags &= ~IDA_INTERRUPTS; 136 137 if (length > 0) { 138 error = ida_command(drv->controller, CMD_WRITE, virtual, 139 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT); 140 } 141 drv->controller->flags |= IDA_INTERRUPTS; 142 return (error); 143 } 144 145 void 146 idad_intr(struct bio *bp) 147 { 148 struct idad_softc *drv; 149 150 drv = bp->bio_disk->d_drv1; 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->controller = (struct ida_softc *)device_get_softc(parent); 179 drv->unit = device_get_unit(dev); 180 drv->drive = drv->controller->num_drives; 181 drv->controller->num_drives++; 182 183 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 184 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 185 if (error) { 186 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 187 return (ENXIO); 188 } 189 190 drv->cylinders = dinfo.ncylinders; 191 drv->heads = dinfo.nheads; 192 drv->sectors = dinfo.nsectors; 193 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; 194 drv->secperunit = dinfo.secperunit; 195 196 /* XXX 197 * other initialization 198 */ 199 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", 200 drv->secperunit / ((1024 * 1024) / drv->secsize), 201 drv->secperunit, drv->secsize); 202 203 drv->disk.d_strategy = idad_strategy; 204 drv->disk.d_name = "idad"; 205 drv->disk.d_dump = idad_dump; 206 drv->disk.d_sectorsize = drv->secsize; 207 drv->disk.d_mediasize = (off_t)drv->secperunit * drv->secsize; 208 drv->disk.d_fwsectors = drv->sectors; 209 drv->disk.d_fwheads = drv->heads; 210 drv->disk.d_drv1 = drv; 211 drv->disk.d_maxsize = DFLTPHYS; /* XXX guess? */ 212 disk_create(drv->unit, &drv->disk, 0, NULL, NULL); 213 214 return (0); 215 } 216 217 static int 218 idad_detach(device_t dev) 219 { 220 struct idad_softc *drv; 221 222 drv = (struct idad_softc *)device_get_softc(dev); 223 disk_destroy(&drv->disk); 224 return (0); 225 } 226