1537078d8f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
282 lines
7.1 KiB
C
282 lines
7.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1999 Jonathan Lemon
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* Copyright (c) 1999 Michael Smith
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Disk driver for Mylex DAC960 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/bio.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/sx.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <geom/geom_disk.h>
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#include <dev/mlx/mlxio.h>
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#include <dev/mlx/mlxvar.h>
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#include <dev/mlx/mlxreg.h>
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/* prototypes */
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static int mlxd_probe(device_t dev);
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static int mlxd_attach(device_t dev);
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static int mlxd_detach(device_t dev);
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devclass_t mlxd_devclass;
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static device_method_t mlxd_methods[] = {
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DEVMETHOD(device_probe, mlxd_probe),
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DEVMETHOD(device_attach, mlxd_attach),
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DEVMETHOD(device_detach, mlxd_detach),
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{ 0, 0 }
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};
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static driver_t mlxd_driver = {
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"mlxd",
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mlxd_methods,
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sizeof(struct mlxd_softc)
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};
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DRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0);
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static int
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mlxd_open(struct disk *dp)
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{
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struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1;
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debug_called(1);
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if (sc == NULL)
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return (ENXIO);
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/* controller not active? */
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MLX_CONFIG_LOCK(sc->mlxd_controller);
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MLX_IO_LOCK(sc->mlxd_controller);
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if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) {
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MLX_IO_UNLOCK(sc->mlxd_controller);
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MLX_CONFIG_UNLOCK(sc->mlxd_controller);
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return(ENXIO);
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}
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sc->mlxd_flags |= MLXD_OPEN;
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MLX_IO_UNLOCK(sc->mlxd_controller);
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MLX_CONFIG_UNLOCK(sc->mlxd_controller);
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return (0);
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}
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static int
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mlxd_close(struct disk *dp)
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{
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struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1;
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debug_called(1);
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if (sc == NULL)
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return (ENXIO);
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MLX_CONFIG_LOCK(sc->mlxd_controller);
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MLX_IO_LOCK(sc->mlxd_controller);
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sc->mlxd_flags &= ~MLXD_OPEN;
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MLX_IO_UNLOCK(sc->mlxd_controller);
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MLX_CONFIG_UNLOCK(sc->mlxd_controller);
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return (0);
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}
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static int
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mlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
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{
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struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1;
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int error;
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debug_called(1);
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if (sc == NULL)
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return (ENXIO);
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if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) {
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debug(0, "mlx_submit_ioctl returned %d\n", error);
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return(error);
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}
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return (ENOTTY);
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}
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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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mlxd_strategy(struct bio *bp)
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{
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struct mlxd_softc *sc = bp->bio_disk->d_drv1;
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debug_called(1);
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/* bogus disk? */
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if (sc == NULL) {
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bp->bio_error = EINVAL;
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bp->bio_flags |= BIO_ERROR;
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goto bad;
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}
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/* XXX may only be temporarily offline - sleep? */
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MLX_IO_LOCK(sc->mlxd_controller);
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if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) {
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MLX_IO_UNLOCK(sc->mlxd_controller);
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bp->bio_error = ENXIO;
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bp->bio_flags |= BIO_ERROR;
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goto bad;
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}
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mlx_submit_buf(sc->mlxd_controller, bp);
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MLX_IO_UNLOCK(sc->mlxd_controller);
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return;
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bad:
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/*
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* Correctly set the bio to indicate a failed 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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void
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mlxd_intr(struct bio *bp)
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{
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debug_called(1);
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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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mlxd_probe(device_t dev)
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{
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debug_called(1);
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device_set_desc(dev, "Mylex System Drive");
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return (0);
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}
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static int
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mlxd_attach(device_t dev)
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{
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struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev);
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device_t parent;
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char *state;
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int s1, s2;
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debug_called(1);
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parent = device_get_parent(dev);
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sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent);
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sc->mlxd_unit = device_get_unit(dev);
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sc->mlxd_drive = device_get_ivars(dev);
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sc->mlxd_dev = dev;
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switch(sc->mlxd_drive->ms_state) {
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case MLX_SYSD_ONLINE:
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state = "online";
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break;
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case MLX_SYSD_CRITICAL:
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state = "critical";
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break;
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case MLX_SYSD_OFFLINE:
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state = "offline";
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break;
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default:
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state = "unknown state";
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}
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device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
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sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE),
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sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state);
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sc->mlxd_disk = disk_alloc();
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sc->mlxd_disk->d_open = mlxd_open;
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sc->mlxd_disk->d_close = mlxd_close;
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sc->mlxd_disk->d_ioctl = mlxd_ioctl;
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sc->mlxd_disk->d_strategy = mlxd_strategy;
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sc->mlxd_disk->d_name = "mlxd";
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sc->mlxd_disk->d_unit = sc->mlxd_unit;
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sc->mlxd_disk->d_drv1 = sc;
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sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE;
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sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size;
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sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors;
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sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads;
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/*
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* Set maximum I/O size to the lesser of the recommended maximum and the practical
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* maximum except on v2 cards where the maximum is set to 8 pages.
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*/
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if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2)
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sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE;
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else {
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s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE;
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s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE;
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sc->mlxd_disk->d_maxsize = imin(s1, s2);
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}
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disk_create(sc->mlxd_disk, DISK_VERSION);
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return (0);
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}
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static int
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mlxd_detach(device_t dev)
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{
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struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev);
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debug_called(1);
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disk_destroy(sc->mlxd_disk);
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return(0);
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}
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