/*- * Copyright (c) 1999,2000 Jonathan Lemon * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/dev/ida/ida_disk.c,v 1.12.2.6 2001/11/27 20:21:02 ps Exp $ */ /* * Disk driver for Compaq SMART RAID adapters. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "idareg.h" #include "idavar.h" /* prototypes */ static int idad_probe(device_t dev); static int idad_attach(device_t dev); static int idad_detach(device_t dev); static d_open_t idad_open; static d_close_t idad_close; static d_strategy_t idad_strategy; static d_dump_t idad_dump; static struct dev_ops id_ops = { { "idad", 0, D_DISK }, .d_open = idad_open, .d_close = idad_close, .d_read = physread, .d_write = physwrite, .d_strategy = idad_strategy, .d_dump = idad_dump, }; static devclass_t idad_devclass; static device_method_t idad_methods[] = { DEVMETHOD(device_probe, idad_probe), DEVMETHOD(device_attach, idad_attach), DEVMETHOD(device_detach, idad_detach), DEVMETHOD_END }; static driver_t idad_driver = { "idad", idad_methods, sizeof(struct idad_softc) }; DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, NULL, NULL); static __inline struct idad_softc * idad_getsoftc(cdev_t dev) { return ((struct idad_softc *)dev->si_drv1); } static int idad_open(struct dev_open_args *ap) { cdev_t dev = ap->a_head.a_dev; struct idad_softc *drv; drv = idad_getsoftc(dev); if (drv == NULL) return (ENXIO); #if 0 bzero(&info, sizeof(info)); info.d_media_blksize = drv->secsize; /* mandatory */ info.d_media_blocks = drv->secperunit; info.d_secpertrack = drv->sectors; /* optional */ info.d_type = DTYPE_SCSI; info.d_nheads = drv->heads; info.d_ncylinders = drv->cylinders; info.d_secpercyl = drv->sectors * drv->heads; disk_setdiskinfo(&drv->disk, &info); #endif return (0); } static int idad_close(struct dev_close_args *ap) { cdev_t dev = ap->a_head.a_dev; struct idad_softc *drv; drv = idad_getsoftc(dev); if (drv == NULL) return (ENXIO); return (0); } /* * Read/write routine for a buffer. Finds the proper unit, range checks * arguments, and schedules the transfer. Does not wait for the transfer * to complete. Multi-page transfers are supported. All I/O requests must * be a multiple of a sector in length. */ static int idad_strategy(struct dev_strategy_args *ap) { cdev_t dev = ap->a_head.a_dev; struct bio *bio = ap->a_bio; struct buf *bp = bio->bio_buf; struct idad_softc *drv; drv = idad_getsoftc(dev); if (drv == NULL) { bp->b_error = EINVAL; goto bad; } /* * software write protect check */ if ((drv->flags & DRV_WRITEPROT) && bp->b_cmd != BUF_CMD_READ) { bp->b_error = EROFS; goto bad; } /* * If it's a null transfer, return immediately */ if (bp->b_bcount == 0) goto done; bio->bio_driver_info = drv; crit_enter(); devstat_start_transaction(&drv->stats); ida_submit_buf(drv->controller, bio); crit_exit(); return(0); bad: bp->b_flags |= B_ERROR; done: /* * Correctly set the buf to indicate a completed transfer */ bp->b_resid = bp->b_bcount; biodone(bio); return(0); } static int idad_dump(struct dev_dump_args *ap) { cdev_t dev = ap->a_head.a_dev; struct idad_softc *drv; int error = 0; drv = idad_getsoftc(dev); if (drv == NULL) return (ENXIO); drv->controller->flags &= ~IDA_INTERRUPTS; if (ap->a_length > 0) { error = ida_command(drv->controller, CMD_WRITE, ap->a_virtual, ap->a_length, drv->drive, ap->a_offset / DEV_BSIZE, DMA_DATA_OUT); } drv->controller->flags |= IDA_INTERRUPTS; return (error); } void idad_intr(struct bio *bio) { struct idad_softc *drv = (struct idad_softc *)bio->bio_driver_info; struct buf *bp = bio->bio_buf; if (bp->b_flags & B_ERROR) bp->b_error = EIO; else bp->b_resid = 0; devstat_end_transaction_buf(&drv->stats, bp); biodone(bio); } static int idad_probe(device_t dev) { device_set_desc(dev, "Compaq Logical Drive"); return (0); } static int idad_attach(device_t dev) { struct ida_drive_info dinfo; struct disk_info info; struct idad_softc *drv; device_t parent; cdev_t dsk; int error; drv = (struct idad_softc *)device_get_softc(dev); parent = device_get_parent(dev); drv->controller = (struct ida_softc *)device_get_softc(parent); drv->unit = device_get_unit(dev); drv->drive = drv->controller->num_drives; drv->controller->num_drives++; error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN); if (error) { device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n"); return (ENXIO); } drv->cylinders = dinfo.ncylinders; drv->heads = dinfo.nheads; drv->sectors = dinfo.nsectors; drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize; drv->secperunit = dinfo.secperunit; /* XXX * other initialization */ device_printf(dev, "%uMB (%u sectors), blocksize=%d\n", drv->secperunit / ((1024 * 1024) / drv->secsize), drv->secperunit, drv->secsize); devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize, DEVSTAT_NO_ORDERED_TAGS, DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER, DEVSTAT_PRIORITY_ARRAY); dsk = disk_create(drv->unit, &drv->disk, &id_ops); dsk->si_drv1 = drv; dsk->si_iosize_max = min(MAXPHYS,64*1024); /* XXX guess? */ /* * Set disk info, as it appears that all needed data is available already. * Setting the disk info will also cause the probing to start. */ bzero(&info, sizeof(info)); info.d_media_blksize = drv->secsize; /* mandatory */ info.d_media_blocks = drv->secperunit; info.d_secpertrack = drv->sectors; /* optional */ info.d_type = DTYPE_SCSI; info.d_nheads = drv->heads; info.d_ncylinders = drv->cylinders; info.d_secpercyl = drv->sectors * drv->heads; disk_setdiskinfo(&drv->disk, &info); return (0); } static int idad_detach(device_t dev) { struct idad_softc *drv; drv = (struct idad_softc *)device_get_softc(dev); devstat_remove_entry(&drv->stats); disk_destroy(&drv->disk); return (0); }