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.h> 44#include <sys/rman.h> 45 46#include <vm/vm.h> 47#include <vm/pmap.h> 48#include <machine/md_var.h> 49 50#include <geom/geom_disk.h> 51 52#include <dev/ida/idareg.h> 53#include <dev/ida/idavar.h> 54 55/* prototypes */ 56static int idad_probe(device_t dev); 57static int idad_attach(device_t dev); 58static int idad_detach(device_t dev); 59 60static d_strategy_t idad_strategy; 61static dumper_t idad_dump; 62 63static devclass_t idad_devclass; 64 65static 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 72static driver_t idad_driver = { 73 "idad", 74 idad_methods, 75 sizeof(struct idad_softc) 76}; 77 78DRIVER_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 */ 86static void 87idad_strategy(struct bio *bp) 88{ 89 struct idad_softc *drv; 90 91 drv = bp->bio_disk->d_drv1; 92 if (drv == NULL) { 93 bp->bio_error = EINVAL; 94 goto bad; 95 } 96 97 /* 98 * software write protect check 99 */ 100 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) { 101 bp->bio_error = EROFS; 102 goto bad; 103 } 104 105 bp->bio_driver1 = drv; 106 ida_submit_buf(drv->controller, bp); 107 return; 108 109bad: 110 bp->bio_flags |= BIO_ERROR; 111 112 /* 113 * Correctly set the buf to indicate a completed transfer 114 */ 115 bp->bio_resid = bp->bio_bcount; 116 biodone(bp); 117 return; 118} 119 120static int 121idad_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 122{ 123 124 struct idad_softc *drv; 125 int error = 0; 126 struct disk *dp; 127 128 dp = arg; 129 drv = dp->d_drv1; 130 if (drv == NULL) 131 return (ENXIO); 132 133 drv->controller->flags &= ~IDA_INTERRUPTS; 134 135 if (length > 0) { 136 error = ida_command(drv->controller, CMD_WRITE, virtual, 137 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT); 138 } 139 drv->controller->flags |= IDA_INTERRUPTS; 140 return (error); 141} 142 143void 144idad_intr(struct bio *bp) 145{ 146 struct idad_softc *drv; 147 148 drv = bp->bio_disk->d_drv1; 149 150 if (bp->bio_flags & BIO_ERROR) 151 bp->bio_error = EIO; 152 else 153 bp->bio_resid = 0; 154 155 biodone(bp); 156} 157 158static int 159idad_probe(device_t dev) 160{ 161 162 device_set_desc(dev, "Compaq Logical Drive"); 163 return (0); 164} 165 166static int 167idad_attach(device_t dev) 168{ 169 struct ida_drive_info dinfo; 170 struct idad_softc *drv; 171 device_t parent; 172 int error; 173 174 drv = (struct idad_softc *)device_get_softc(dev); 175 parent = device_get_parent(dev); 176 drv->dev = dev; 177 drv->controller = (struct ida_softc *)device_get_softc(parent); 178 drv->unit = device_get_unit(dev); 179 drv->drive = (intptr_t)device_get_ivars(dev); 180 181 mtx_lock(&drv->controller->lock); 182 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, 183 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); 184 mtx_unlock(&drv->controller->lock); 185 if (error) { 186 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); 187 return (ENXIO); 188 } 189 190 drv->cylinders = dinfo.dp.ncylinders; 191 drv->heads = dinfo.dp.nheads; 192 drv->sectors = dinfo.dp.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 = disk_alloc(); 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 drv->disk->d_unit = drv->unit; 214 disk_create(drv->disk, DISK_VERSION); 215 216 return (0); 217} 218 219static int 220idad_detach(device_t dev) 221{ 222 struct idad_softc *drv; 223 224 drv = (struct idad_softc *)device_get_softc(dev); 225 disk_destroy(drv->disk); 226 return (0); 227} 228