Staging: Add octeon-ethernet driver files.

The octeon-ethernet driver supports the sgmii, rgmii, spi, and xaui
ports present on the Cavium OCTEON family of SOCs.  These SOCs are
multi-core mips64 processors with existing support over in arch/mips.

The driver files can be categorized into three basic groups:

1) Register definitions, these are named cvmx-*-defs.h

2) Main driver code, these have names that don't start cvmx-.

3) Interface specific functions and other utility code, names starting
with cvmx-

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/drivers/staging/octeon/ethernet-util.h b/drivers/staging/octeon/ethernet-util.h
new file mode 100644
index 0000000..37b6659
--- /dev/null
+++ b/drivers/staging/octeon/ethernet-util.h
@@ -0,0 +1,81 @@
+/**********************************************************************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2007 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+*********************************************************************/
+
+#define DEBUGPRINT(format, ...) do { if (printk_ratelimit()) 		\
+					printk(format, ##__VA_ARGS__);	\
+				} while (0)
+
+/**
+ * Given a packet data address, return a pointer to the
+ * beginning of the packet buffer.
+ *
+ * @packet_ptr: Packet data hardware address
+ * Returns Packet buffer pointer
+ */
+static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
+{
+	return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
+				<< 7);
+}
+
+/**
+ * Given an IPD/PKO port number, return the logical interface it is
+ * on.
+ *
+ * @ipd_port: Port to check
+ *
+ * Returns Logical interface
+ */
+static inline int INTERFACE(int ipd_port)
+{
+	if (ipd_port < 32)	/* Interface 0 or 1 for RGMII,GMII,SPI, etc */
+		return ipd_port >> 4;
+	else if (ipd_port < 36)	/* Interface 2 for NPI */
+		return 2;
+	else if (ipd_port < 40)	/* Interface 3 for loopback */
+		return 3;
+	else if (ipd_port == 40)	/* Non existant interface for POW0 */
+		return 4;
+	else
+		panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port);
+}
+
+/**
+ * Given an IPD/PKO port number, return the port's index on a
+ * logical interface.
+ *
+ * @ipd_port: Port to check
+ *
+ * Returns Index into interface port list
+ */
+static inline int INDEX(int ipd_port)
+{
+	if (ipd_port < 32)
+		return ipd_port & 15;
+	else
+		return ipd_port & 3;
+}