1 files changed, 318 insertions, 0 deletions
diff --git a/sys/dev/ida/ida_disk.c b/sys/dev/ida/ida_disk.c
new file mode 100644
index 0000000..33f87c5
--- /dev/null
+++ b/sys/dev/ida/ida_disk.c
@@ -0,0 +1,318 @@
+/*-
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Disk driver for Compaq SMART RAID adapters.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+
+#include <sys/bio.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/cons.h>
+#include <sys/devicestat.h>
+#include <sys/disk.h>
+
+#include <machine/bus_memio.h>
+#include <machine/bus_pio.h>
+#include <machine/bus.h>
+#include <sys/rman.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <machine/md_var.h>
+
+#include <dev/ida/idareg.h>
+#include <dev/ida/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;
+
+#define IDAD_CDEV_MAJOR	109
+
+static struct cdevsw id_cdevsw = {
+	/* open */	idad_open,
+	/* close */	idad_close,
+	/* read */	physread,
+	/* write */	physwrite,
+	/* ioctl */	noioctl,
+	/* poll */	nopoll,
+	/* mmap */	nommap,
+	/* strategy */	idad_strategy,
+	/* name */ 	"idad",
+	/* maj */	IDAD_CDEV_MAJOR,
+	/* dump */	idad_dump,
+	/* psize */ 	nopsize,
+	/* flags */	D_DISK,
+};
+
+static devclass_t	idad_devclass;
+static struct cdevsw 	idaddisk_cdevsw;
+static int		disks_registered = 0;
+
+static device_method_t idad_methods[] = {
+	DEVMETHOD(device_probe,		idad_probe),
+	DEVMETHOD(device_attach,	idad_attach),
+	DEVMETHOD(device_detach,	idad_detach),
+	{ 0, 0 }
+};
+
+static driver_t idad_driver = {
+	"idad",
+	idad_methods,
+	sizeof(struct idad_softc)
+};
+
+DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
+
+static __inline struct idad_softc *
+idad_getsoftc(dev_t dev)
+{
+
+	return ((struct idad_softc *)dev->si_drv1);
+}
+
+static int
+idad_open(dev_t dev, int flags, int fmt, struct thread *td)
+{
+	struct idad_softc *drv;
+
+	drv = idad_getsoftc(dev);
+	if (drv == NULL)
+		return (ENXIO);
+
+	drv->disk.d_sectorsize = drv->secsize;
+	drv->disk.d_mediasize = (off_t)drv->secperunit * drv->secsize;
+	drv->disk.d_fwsectors = drv->sectors;
+	drv->disk.d_fwheads = drv->heads;
+
+	return (0);
+}
+
+static int
+idad_close(dev_t dev, int flags, int fmt, struct thread *td)
+{
+	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 void
+idad_strategy(struct bio *bp)
+{
+	struct idad_softc *drv;
+	int s;
+
+	drv = idad_getsoftc(bp->bio_dev);
+	if (drv == NULL) {
+    		bp->bio_error = EINVAL;
+		goto bad;
+	}
+
+	/*
+	 * software write protect check
+	 */
+	if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) {
+		bp->bio_error = EROFS;
+		goto bad;
+	}
+
+	bp->bio_driver1 = drv;
+	s = splbio();
+	devstat_start_transaction(&drv->stats);
+	ida_submit_buf(drv->controller, bp);
+	splx(s);
+	return;
+
+bad:
+	bp->bio_flags |= BIO_ERROR;
+
+	/*
+	 * Correctly set the buf to indicate a completed transfer
+	 */
+	bp->bio_resid = bp->bio_bcount;
+	biodone(bp);
+	return;
+}
+
+static int
+idad_dump(dev_t dev, void *virtual, vm_offset_t physical, off_t offset, size_t length)
+{
+
+	/* This needs modified to the new dump API */
+	return (ENXIO);
+#if 0
+	struct idad_softc *drv;
+	u_int count, blkno, secsize;
+	long blkcnt;
+	int i, error, dumppages;
+        caddr_t va;
+	vm_offset_t addr, a;
+
+	if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize)))
+		return (error);
+
+	drv = idad_getsoftc(dev);
+	if (drv == NULL)
+		return (ENXIO);
+
+	addr = 0;
+	blkcnt = howmany(PAGE_SIZE, secsize);
+
+	while (count > 0) {
+		va = NULL;
+
+		dumppages = imin(count / blkcnt, MAXDUMPPGS); 
+
+		for (i = 0; i < dumppages; i++) {
+			a = addr + (i * PAGE_SIZE);
+			if (is_physical_memory(a))
+				va = pmap_kenter_temporary(trunc_page(a), i);
+			else
+				va = pmap_kenter_temporary(trunc_page(0), i);
+		}
+
+		error = ida_command(drv->controller, CMD_WRITE, va,
+		    PAGE_SIZE * dumppages, drv->drive, blkno, DMA_DATA_OUT);
+		if (error)
+			return (error);
+
+		if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
+			return (EINTR);
+
+		blkno += blkcnt * dumppages;
+		count -= blkcnt * dumppages;
+		addr += PAGE_SIZE * dumppages;
+	}
+	return (0);
+#endif
+}
+
+void
+idad_intr(struct bio *bp)
+{
+	struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1;
+
+	if (bp->bio_flags & BIO_ERROR)
+		bp->bio_error = EIO;
+	else
+		bp->bio_resid = 0;
+
+	biofinish(bp, &drv->stats, 0);
+}
+
+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 idad_softc *drv;
+	device_t parent;
+	dev_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, 0,
+	    &id_cdevsw, &idaddisk_cdevsw);
+
+	dsk->si_drv1 = drv;
+	dsk->si_iosize_max = DFLTPHYS;		/* XXX guess? */
+	disks_registered++;
+
+	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);
+
+	if (--disks_registered == 0)
+		cdevsw_remove(&idaddisk_cdevsw);
+	return (0);
+}