Add in a bunch of things to the mfi driver:

      - Linux ioctl support, with the other Linux changes MegaCli
	will run if you mount linprocfs & linsysfs then set
	sysctl compat.linux.osrelease=2.6.12 or similar.  This works
	on i386.  It should work on amd64 but not well tested yet.
	StoreLib may or may not work.  Remember to kldload mfi_linux.
      - Add in AEN (Async Event Notification) support so we can
	get messages from the firmware when something happens.
	Not all messages are in defined in event detail.  Use
	event_log to try to figure out what happened.
      - Try to implement something like SIGIO for StoreLib.  Since
	mrmonitor doesn't work right I can't fully test it.  StoreLib
	works best with the rh9 base.  In theory mrmonitor isn't
	needed due to native driver support of AEN :-)
Now we can configure and monitor the RAID better.

Submitted by:	IronPort Systems.

1 files changed, 90 insertions, 0 deletions

diff --git a/sys/dev/mfi/mfi_linux.c b/sys/dev/mfi/mfi_linux.c
new file mode 100644
index 0000000..e12d606
--- /dev/null
+++ b/sys/dev/mfi/mfi_linux.c
@@ -0,0 +1,90 @@
+/*-
+ * Copyright (c) 2006 IronPort Systems
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/file.h>
+#include <sys/proc.h>
+
+#if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
+#include <machine/../linux32/linux.h>
+#include <machine/../linux32/linux32_proto.h>
+#else
+#include <machine/../linux/linux.h>
+#include <machine/../linux/linux_proto.h>
+#endif
+#include <compat/linux/linux_ioctl.h>
+#include <compat/linux/linux_util.h>
+
+/* There are multiple ioctl number ranges that need to be handled */
+#define MFI_LINUX_IOCTL_MIN  0x4d00
+#define MFI_LINUX_IOCTL_MAX  0x4d04
+
+static linux_ioctl_function_t mfi_linux_ioctl;
+static struct linux_ioctl_handler mfi_linux_handler = {mfi_linux_ioctl,
+						       MFI_LINUX_IOCTL_MIN,
+						       MFI_LINUX_IOCTL_MAX};
+
+SYSINIT  (mfi_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_ioctl_register_handler, &mfi_linux_handler);
+SYSUNINIT(mfi_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_ioctl_unregister_handler, &mfi_linux_handler);
+
+static struct linux_device_handler mfi_device_handler =
+	{ "mfi", "megaraid_sas", "mfi0", "megaraid_sas_ioctl_node", -1, 0, 1};
+
+SYSINIT  (mfi_register2,   SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_device_register_handler, &mfi_device_handler);
+SYSUNINIT(mfi_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_device_unregister_handler, &mfi_device_handler);
+
+static int
+mfi_linux_modevent(module_t mod, int cmd, void *data)
+{
+	return (0);
+}
+
+DEV_MODULE(mfi_linux, mfi_linux_modevent, NULL);
+MODULE_DEPEND(mfi, linux, 1, 1, 1);
+
+static int
+mfi_linux_ioctl(d_thread_t *p, struct linux_ioctl_args *args)
+{
+	struct file *fp;
+	int error;
+
+	if ((error = fget(p, args->fd, &fp)) != 0)
+		return (error);
+	error = fo_ioctl(fp, args->cmd, (caddr_t)args->arg, p->td_ucred, p);
+	fdrop(fp, p);
+	return (error);
+}