This is a driver for the AMI MegaRAID family of controllers. It all of

the AMI PCI controllers using the 8LD firmware interface (40LD firmware
will be supported as soon as I have hardware to test with).

These controllers are rebadged by Dell as the PERC, as well as by HP
and possibly other vendors.

1 files changed, 299 insertions, 0 deletions

diff --git a/sys/dev/amr/amr_disk.c b/sys/dev/amr/amr_disk.c
new file mode 100644
index 0000000..958e5ad
--- /dev/null
+++ b/sys/dev/amr/amr_disk.c
@@ -0,0 +1,299 @@
+/*-
+ * Copyright (c) 1999 Jonathan Lemon
+ * Copyright (c) 1999 Michael Smith
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Disk driver for AMI MegaRaid controllers
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+
+#include <sys/buf.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/devicestat.h>
+#include <sys/disk.h>
+
+#include <machine/bus.h>
+#include <machine/clock.h>
+#include <sys/rman.h>
+
+#include <dev/amr/amrio.h>
+#include <dev/amr/amrreg.h>
+#include <dev/amr/amrvar.h>
+
+#if 0
+#define debug(fmt, args...)	printf("%s: " fmt "\n", __FUNCTION__ , ##args)
+#else
+#define debug(fmt, args...)
+#endif
+
+/* prototypes */
+static int amrd_probe(device_t dev);
+static int amrd_attach(device_t dev);
+static int amrd_detach(device_t dev);
+
+static	d_open_t	amrd_open;
+static	d_close_t	amrd_close;
+static	d_strategy_t	amrd_strategy;
+static	d_ioctl_t	amrd_ioctl;
+
+#define AMRD_BDEV_MAJOR	35
+#define AMRD_CDEV_MAJOR	133
+
+static struct cdevsw amrd_cdevsw = {
+		/* open */	amrd_open,
+		/* close */	amrd_close,
+		/* read */	physread,
+		/* write */	physwrite,
+		/* ioctl */	amrd_ioctl,
+		/* poll */	nopoll,
+		/* mmap */	nommap,
+		/* strategy */	amrd_strategy,
+		/* name */ 	"amrd",
+		/* maj */	AMRD_CDEV_MAJOR,
+		/* dump */	nodump,
+		/* psize */ 	nopsize,
+		/* flags */	D_DISK,
+		/* bmaj */	AMRD_BDEV_MAJOR
+};
+
+static devclass_t	amrd_devclass;
+static struct cdevsw	amrddisk_cdevsw;
+static int		disks_registered = 0;
+
+static device_method_t amrd_methods[] = {
+    DEVMETHOD(device_probe,	amrd_probe),
+    DEVMETHOD(device_attach,	amrd_attach),
+    DEVMETHOD(device_detach,	amrd_detach),
+    { 0, 0 }
+};
+
+static driver_t amrd_driver = {
+    "amrd",
+    amrd_methods,
+    sizeof(struct amrd_softc)
+};
+
+DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0);
+
+static __inline struct amrd_softc *
+amrd_getsoftc(dev_t dev)
+{
+    int unit;
+
+    unit = dkunit(dev);
+    return ((struct amrd_softc *)devclass_get_softc(amrd_devclass, unit));
+}
+
+static int
+amrd_open(dev_t dev, int flags, int fmt, struct proc *p)
+{
+    struct amrd_softc	*sc = amrd_getsoftc(dev);
+    struct disklabel	*label;
+
+    debug("called");
+	
+    if (sc == NULL)
+	return (ENXIO);
+
+    /* controller not active? */
+    if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN)
+	return(ENXIO);
+
+    label = &sc->amrd_disk.d_label;
+    bzero(label, sizeof(*label));
+    label->d_type 	= DTYPE_SCSI;
+    label->d_secsize    = AMR_BLKSIZE;
+    label->d_nsectors   = sc->amrd_drive->al_sectors;
+    label->d_ntracks    = sc->amrd_drive->al_heads;
+    label->d_ncylinders = sc->amrd_drive->al_cylinders;
+    label->d_secpercyl  = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads;
+    label->d_secperunit = sc->amrd_drive->al_size;
+
+    sc->amrd_flags |= AMRD_OPEN;
+    return (0);
+}
+
+static int
+amrd_close(dev_t dev, int flags, int fmt, struct proc *p)
+{
+    struct amrd_softc *sc = amrd_getsoftc(dev);
+
+    debug("called");
+	
+    if (sc == NULL)
+	return (ENXIO);
+    sc->amrd_flags &= ~AMRD_OPEN;
+    return (0);
+}
+
+static int
+amrd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
+{
+    struct amrd_softc *sc = amrd_getsoftc(dev);
+    int error;
+
+    debug("called");
+	
+    if (sc == NULL)
+	return (ENXIO);
+
+    if ((error = amr_submit_ioctl(sc->amrd_controller, sc->amrd_drive, cmd, addr, flag, p)) != ENOIOCTL) {
+	debug("amr_submit_ioctl returned %d\n", error);
+	return(error);
+    }
+    return (ENOTTY);
+}
+
+/*
+ * 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 void
+amrd_strategy(struct buf *bp)
+{
+    struct amrd_softc	*sc = amrd_getsoftc(bp->b_dev);
+    int			s;
+
+    debug("called");
+
+    /* bogus disk? */
+    if (sc == NULL) {
+	bp->b_error = EINVAL;
+	goto bad;
+    }
+
+#if 0
+    /* XXX may only be temporarily offline - sleep? */
+    if (sc->amrd_drive->ld_state == AMR_SYSD_OFFLINE) {
+	bp->b_error = ENXIO;
+	goto bad;
+    }
+#endif
+
+    /* do-nothing operation */
+    if (bp->b_bcount == 0)
+	goto done;
+
+    /* pass reference to us */
+    bp->b_driver1 = sc;
+    s = splbio();
+    devstat_start_transaction(&sc->amrd_stats);
+    amr_submit_buf(sc->amrd_controller, bp);
+    splx(s);
+    return;
+
+ bad:
+    bp->b_flags |= B_ERROR;
+
+ done:
+    /*
+     * Correctly set the buf to indicate a completed transfer
+     */
+    bp->b_resid = bp->b_bcount;
+    biodone(bp);
+    return;
+}
+
+void
+amrd_intr(void *data)
+{
+    struct buf *bp = (struct buf *)data;
+    struct amrd_softc *sc = (struct amrd_softc *)bp->b_driver1;
+
+    debug("called");
+	
+    if (bp->b_flags & B_ERROR)
+	bp->b_error = EIO;
+    else
+	bp->b_resid = 0;
+
+    devstat_end_transaction_buf(&sc->amrd_stats, bp);
+    biodone(bp);
+}
+
+static int
+amrd_probe(device_t dev)
+{
+
+    debug("called");
+	
+    device_set_desc(dev, "MegaRAID logical drive");
+    return (0);
+}
+
+static int
+amrd_attach(device_t dev)
+{
+    struct amrd_softc	*sc = (struct amrd_softc *)device_get_softc(dev);
+    device_t		parent;
+    
+    debug("called");
+
+    parent = device_get_parent(dev);
+    sc->amrd_controller = (struct amr_softc *)device_get_softc(parent);
+    sc->amrd_unit = device_get_unit(dev);
+    sc->amrd_drive = device_get_ivars(dev);
+
+    device_printf(dev, "%uMB (%u sectors), state 0x%x properties 0x%x\n",
+		  sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE),
+		  sc->amrd_drive->al_size, sc->amrd_drive->al_state, sc->amrd_drive->al_properties);
+
+    devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE,
+		      DEVSTAT_NO_ORDERED_TAGS,
+		      DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_OTHER, 
+		      DEVSTAT_PRIORITY_DA);
+
+    disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_cdevsw, &amrddisk_cdevsw);
+    disks_registered++;
+
+    return (0);
+}
+
+static int
+amrd_detach(device_t dev)
+{
+    struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
+
+    debug("called");
+
+    devstat_remove_entry(&sc->amrd_stats);
+
+    /* hack to handle lack of destroy_disk() */
+    if (--disks_registered == 0)
+	cdevsw_remove(&amrddisk_cdevsw);
+
+    return(0);
+}
+