Add a driver for the new LSI MegaRAID SAS controller family. The 'MFI' name

is derived from the phrase 'MegaRAID Firmware Interface' used by LSI.  This
driver provides a block interface to logical disks on the card and a minimal
management device.  It is MPSAFE, INTR_FAST, and 64-bit capable.

Thanks to Dell for providing hardware to test with and IronPort for
sponsoring the work.

Sponsored by: Dell, Ironport
MFC After: 3 days

1 files changed, 47 insertions, 0 deletions

diff --git a/sys/dev/mfi/mfi_ioctl.h b/sys/dev/mfi/mfi_ioctl.h
new file mode 100644
index 0000000..6730ba2
--- /dev/null
+++ b/sys/dev/mfi/mfi_ioctl.h
@@ -0,0 +1,47 @@
+/*-
+ * 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("$FreeBSD$");
+
+#define MFIQ_FREE	0
+#define MFIQ_BIO	1
+#define MFIQ_READY	2
+#define MFIQ_BUSY	3
+#define MFIQ_COUNT	4
+
+struct mfi_qstat {
+	uint32_t	q_length;
+	uint32_t	q_max;
+};
+
+union mfi_statrequest {
+	uint32_t		ms_item;
+	struct mfi_qstat	ms_qstat;
+};
+
+#define MFIIO_STATS	_IOWR('Q', 101, union mfi_statrequest)
+