Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 133 insertions, 0 deletions

diff --git a/kernel/drivers/net/ethernet/amd/au1000_eth.h b/kernel/drivers/net/ethernet/amd/au1000_eth.h
new file mode 100644
index 000000000..ca53024f0
--- /dev/null
+++ b/kernel/drivers/net/ethernet/amd/au1000_eth.h
@@ -0,0 +1,133 @@
+/*
+ *
+ * Alchemy Au1x00 ethernet driver include file
+ *
+ * Author: Pete Popov <ppopov@mvista.com>
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * ########################################################################
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ *
+ * ########################################################################
+ *
+ *
+ */
+
+
+#define MAC_IOSIZE 0x10000
+#define NUM_RX_DMA 4       /* Au1x00 has 4 rx hardware descriptors */
+#define NUM_TX_DMA 4       /* Au1x00 has 4 tx hardware descriptors */
+
+#define NUM_RX_BUFFS 4
+#define NUM_TX_BUFFS 4
+#define MAX_BUF_SIZE 2048
+
+#define ETH_TX_TIMEOUT (HZ/4)
+#define MAC_MIN_PKT_SIZE 64
+
+#define MULTICAST_FILTER_LIMIT 64
+
+/*
+ * Data Buffer Descriptor. Data buffers must be aligned on 32 byte
+ * boundary for both, receive and transmit.
+ */
+struct db_dest {
+	struct db_dest *pnext;
+	u32 *vaddr;
+	dma_addr_t dma_addr;
+};
+
+/*
+ * The transmit and receive descriptors are memory
+ * mapped registers.
+ */
+struct tx_dma {
+	u32 status;
+	u32 buff_stat;
+	u32 len;
+	u32 pad;
+};
+
+struct rx_dma {
+	u32 status;
+	u32 buff_stat;
+	u32 pad[2];
+};
+
+
+/*
+ * MAC control registers, memory mapped.
+ */
+struct mac_reg {
+	u32 control;
+	u32 mac_addr_high;
+	u32 mac_addr_low;
+	u32 multi_hash_high;
+	u32 multi_hash_low;
+	u32 mii_control;
+	u32 mii_data;
+	u32 flow_control;
+	u32 vlan1_tag;
+	u32 vlan2_tag;
+};
+
+
+struct au1000_private {
+	struct db_dest *pDBfree;
+	struct db_dest db[NUM_RX_BUFFS+NUM_TX_BUFFS];
+	struct rx_dma *rx_dma_ring[NUM_RX_DMA];
+	struct tx_dma *tx_dma_ring[NUM_TX_DMA];
+	struct db_dest *rx_db_inuse[NUM_RX_DMA];
+	struct db_dest *tx_db_inuse[NUM_TX_DMA];
+	u32 rx_head;
+	u32 tx_head;
+	u32 tx_tail;
+	u32 tx_full;
+
+	int mac_id;
+
+	int mac_enabled;       /* whether MAC is currently enabled and running
+				* (req. for mdio)
+				*/
+
+	int old_link;          /* used by au1000_adjust_link */
+	int old_speed;
+	int old_duplex;
+
+	struct phy_device *phy_dev;
+	struct mii_bus *mii_bus;
+
+	/* PHY configuration */
+	int phy_static_config;
+	int phy_search_highest_addr;
+	int phy1_search_mac0;
+
+	int phy_addr;
+	int phy_busid;
+	int phy_irq;
+
+	/* These variables are just for quick access
+	 * to certain regs addresses.
+	 */
+	struct mac_reg *mac;  /* mac registers                      */
+	u32 *enable;     /* address of MAC Enable Register     */
+	void __iomem *macdma;	/* base of MAC DMA port */
+	u32 vaddr;                /* virtual address of rx/tx buffers   */
+	dma_addr_t dma_addr;      /* dma address of rx/tx buffers       */
+
+	spinlock_t lock;       /* Serialise access to device */
+
+	u32 msg_enable;
+};