230 lines
5.6 KiB
C
230 lines
5.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 1999,2000 Jonathan Lemon
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Disk driver for Compaq SMART RAID adapters.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/cons.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/md_var.h>
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#include <geom/geom_disk.h>
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#include <dev/ida/idareg.h>
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#include <dev/ida/idavar.h>
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/* prototypes */
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static int idad_probe(device_t dev);
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static int idad_attach(device_t dev);
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static int idad_detach(device_t dev);
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static d_strategy_t idad_strategy;
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static dumper_t idad_dump;
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static device_method_t idad_methods[] = {
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DEVMETHOD(device_probe, idad_probe),
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DEVMETHOD(device_attach, idad_attach),
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DEVMETHOD(device_detach, idad_detach),
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{ 0, 0 }
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};
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static driver_t idad_driver = {
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"idad",
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idad_methods,
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sizeof(struct idad_softc)
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};
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DRIVER_MODULE(idad, ida, idad_driver, 0, 0);
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/*
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* Read/write routine for a buffer. Finds the proper unit, range checks
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* arguments, and schedules the transfer. Does not wait for the transfer
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* to complete. Multi-page transfers are supported. All I/O requests must
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* be a multiple of a sector in length.
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*/
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static void
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idad_strategy(struct bio *bp)
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{
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struct idad_softc *drv;
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drv = bp->bio_disk->d_drv1;
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if (drv == NULL) {
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bp->bio_error = EINVAL;
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goto bad;
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}
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/*
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* software write protect check
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*/
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if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) {
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bp->bio_error = EROFS;
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goto bad;
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}
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if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) {
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bp->bio_error = EOPNOTSUPP;
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goto bad;
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}
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bp->bio_driver1 = drv;
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ida_submit_buf(drv->controller, bp);
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return;
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bad:
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bp->bio_flags |= BIO_ERROR;
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/*
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* Correctly set the buf to indicate a completed transfer
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*/
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bp->bio_resid = bp->bio_bcount;
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biodone(bp);
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return;
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}
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static int
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idad_dump(void *arg, void *virtual, off_t offset, size_t length)
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{
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struct idad_softc *drv;
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int error = 0;
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struct disk *dp;
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dp = arg;
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drv = dp->d_drv1;
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if (drv == NULL)
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return (ENXIO);
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drv->controller->flags &= ~IDA_INTERRUPTS;
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if (length > 0) {
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error = ida_command(drv->controller, CMD_WRITE, virtual,
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length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT);
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}
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drv->controller->flags |= IDA_INTERRUPTS;
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return (error);
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}
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void
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idad_intr(struct bio *bp)
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{
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if (bp->bio_flags & BIO_ERROR)
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bp->bio_error = EIO;
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else
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bp->bio_resid = 0;
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biodone(bp);
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}
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static int
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idad_probe(device_t dev)
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{
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device_set_desc(dev, "Compaq Logical Drive");
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return (0);
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}
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static int
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idad_attach(device_t dev)
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{
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struct ida_drive_info dinfo;
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struct idad_softc *drv;
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device_t parent;
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int error;
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drv = (struct idad_softc *)device_get_softc(dev);
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parent = device_get_parent(dev);
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drv->dev = dev;
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drv->controller = (struct ida_softc *)device_get_softc(parent);
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drv->unit = device_get_unit(dev);
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drv->drive = (intptr_t)device_get_ivars(dev);
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mtx_lock(&drv->controller->lock);
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error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
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&dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
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mtx_unlock(&drv->controller->lock);
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if (error) {
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device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
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return (ENXIO);
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}
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drv->cylinders = dinfo.dp.ncylinders;
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drv->heads = dinfo.dp.nheads;
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drv->sectors = dinfo.dp.nsectors;
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drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
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drv->secperunit = dinfo.secperunit;
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/* XXX
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* other initialization
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*/
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device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
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drv->secperunit / ((1024 * 1024) / drv->secsize),
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drv->secperunit, drv->secsize);
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drv->disk = disk_alloc();
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drv->disk->d_strategy = idad_strategy;
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drv->disk->d_name = "idad";
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drv->disk->d_dump = idad_dump;
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drv->disk->d_sectorsize = drv->secsize;
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drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize;
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drv->disk->d_fwsectors = drv->sectors;
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drv->disk->d_fwheads = drv->heads;
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drv->disk->d_drv1 = drv;
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drv->disk->d_maxsize = DFLTPHYS; /* XXX guess? */
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drv->disk->d_unit = drv->unit;
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disk_create(drv->disk, DISK_VERSION);
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return (0);
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}
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static int
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idad_detach(device_t dev)
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{
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struct idad_softc *drv;
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drv = (struct idad_softc *)device_get_softc(dev);
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disk_destroy(drv->disk);
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return (0);
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}
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