block: IBM RamSan 70/80 device driver

This patch includes the device driver for the IBM RamSan
family of PCI SSD flash storage cards. This driver will
include support for the RamSan 70 and 80. The driver
presents a block device for device I/O.

Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 72 insertions, 0 deletions

diff --git a/drivers/block/rsxx/rsxx_cfg.h b/drivers/block/rsxx/rsxx_cfg.h
new file mode 100644
index 00000000000..c025fe5fdb7
--- /dev/null
+++ b/drivers/block/rsxx/rsxx_cfg.h
@@ -0,0 +1,72 @@
+/*
+* Filename: rsXX_cfg.h
+*
+*
+* Authors: Joshua Morris <josh.h.morris@us.ibm.com>
+*	Philip Kelleher <pjk1939@linux.vnet.ibm.com>
+*
+* (C) Copyright 2013 IBM Corporation
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation; either version 2 of the
+* License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software Foundation,
+* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#ifndef __RSXX_CFG_H__
+#define __RSXX_CFG_H__
+
+/* NOTE: Config values will be saved in network byte order (i.e. Big endian) */
+#include <linux/types.h>
+
+/*
+ * The card config version must match the driver's expected version. If it does
+ * not, the DMA interfaces will not be attached and the user will need to
+ * initialize/upgrade the card configuration using the card config utility.
+ */
+#define RSXX_CFG_VERSION	4
+
+struct card_cfg_hdr {
+	__u32	version;
+	__u32	crc;
+};
+
+struct card_cfg_data {
+	__u32	block_size;
+	__u32	stripe_size;
+	__u32	vendor_id;
+	__u32	cache_order;
+	struct {
+		__u32	mode;	/* Disabled, manual, auto-tune... */
+		__u32	count;	/* Number of intr to coalesce     */
+		__u32	latency;/* Max wait time (in ns)          */
+	} intr_coal;
+};
+
+struct rsxx_card_cfg {
+	struct card_cfg_hdr	hdr;
+	struct card_cfg_data	data;
+};
+
+/* Vendor ID Values */
+#define RSXX_VENDOR_ID_TMS_IBM		0
+#define RSXX_VENDOR_ID_DSI		1
+#define RSXX_VENDOR_COUNT		2
+
+/* Interrupt Coalescing Values */
+#define RSXX_INTR_COAL_DISABLED           0
+#define RSXX_INTR_COAL_EXPLICIT           1
+#define RSXX_INTR_COAL_AUTO_TUNE          2
+
+
+#endif /* __RSXX_CFG_H__ */
+