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, 127 insertions, 0 deletions

diff --git a/drivers/staging/octeon/octeon-ethernet.h b/drivers/staging/octeon/octeon-ethernet.h
new file mode 100644
index 000000000000..b3199076ef5e
--- /dev/null
+++ b/drivers/staging/octeon/octeon-ethernet.h
@@ -0,0 +1,127 @@
+/**********************************************************************
+ * 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
+**********************************************************************/
+
+/*
+ * External interface for the Cavium Octeon ethernet driver.
+ */
+#ifndef OCTEON_ETHERNET_H
+#define OCTEON_ETHERNET_H
+
+/**
+ * This is the definition of the Ethernet driver's private
+ * driver state stored in netdev_priv(dev).
+ */
+struct octeon_ethernet {
+	/* PKO hardware output port */
+	int port;
+	/* PKO hardware queue for the port */
+	int queue;
+	/* Hardware fetch and add to count outstanding tx buffers */
+	int fau;
+	/*
+	 * Type of port. This is one of the enums in
+	 * cvmx_helper_interface_mode_t
+	 */
+	int imode;
+	/* List of outstanding tx buffers per queue */
+	struct sk_buff_head tx_free_list[16];
+	/* Device statistics */
+	struct net_device_stats stats
+;	/* Generic MII info structure */
+	struct mii_if_info mii_info;
+	/* Last negotiated link state */
+	uint64_t link_info;
+	/* Called periodically to check link status */
+	void (*poll) (struct net_device *dev);
+};
+
+/**
+ * Free a work queue entry received in a intercept callback.
+ *
+ * @work_queue_entry:
+ *               Work queue entry to free
+ * Returns Zero on success, Negative on failure.
+ */
+int cvm_oct_free_work(void *work_queue_entry);
+
+/**
+ * Transmit a work queue entry out of the ethernet port. Both
+ * the work queue entry and the packet data can optionally be
+ * freed. The work will be freed on error as well.
+ *
+ * @dev:     Device to transmit out.
+ * @work_queue_entry:
+ *                Work queue entry to send
+ * @do_free: True if the work queue entry and packet data should be
+ *                freed. If false, neither will be freed.
+ * @qos:     Index into the queues for this port to transmit on. This
+ *                is used to implement QoS if their are multiple queues per
+ *                port. This parameter must be between 0 and the number of
+ *                queues per port minus 1. Values outside of this range will
+ *                be change to zero.
+ *
+ * Returns Zero on success, negative on failure.
+ */
+int cvm_oct_transmit_qos(struct net_device *dev, void *work_queue_entry,
+			 int do_free, int qos);
+
+/**
+ * Transmit a work queue entry out of the ethernet port. Both
+ * the work queue entry and the packet data can optionally be
+ * freed. The work will be freed on error as well. This simply
+ * wraps cvmx_oct_transmit_qos() for backwards compatability.
+ *
+ * @dev:     Device to transmit out.
+ * @work_queue_entry:
+ *                Work queue entry to send
+ * @do_free: True if the work queue entry and packet data should be
+ *                freed. If false, neither will be freed.
+ *
+ * Returns Zero on success, negative on failure.
+ */
+static inline int cvm_oct_transmit(struct net_device *dev,
+				   void *work_queue_entry, int do_free)
+{
+	return cvm_oct_transmit_qos(dev, work_queue_entry, do_free, 0);
+}
+
+extern int cvm_oct_rgmii_init(struct net_device *dev);
+extern void cvm_oct_rgmii_uninit(struct net_device *dev);
+extern int cvm_oct_sgmii_init(struct net_device *dev);
+extern void cvm_oct_sgmii_uninit(struct net_device *dev);
+extern int cvm_oct_spi_init(struct net_device *dev);
+extern void cvm_oct_spi_uninit(struct net_device *dev);
+extern int cvm_oct_xaui_init(struct net_device *dev);
+extern void cvm_oct_xaui_uninit(struct net_device *dev);
+
+extern int always_use_pow;
+extern int pow_send_group;
+extern int pow_receive_group;
+extern char pow_send_list[];
+extern struct net_device *cvm_oct_device[];
+
+#endif