xscale: Move the Intel XScale IXP drivers

Move the Intel XScale IXP drivers into drivers/net/ethernet/xscale/
and make the necessary Kconfig and Makefile changes.

CC: Krzysztof Halasa <khc@pm.waw.pl>
CC: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 232 insertions, 0 deletions

diff --git a/drivers/net/ethernet/xscale/ixp2000/enp2611.c b/drivers/net/ethernet/xscale/ixp2000/enp2611.c
new file mode 100644
index 000000000000..34a6cfd17930
--- /dev/null
+++ b/drivers/net/ethernet/xscale/ixp2000/enp2611.c
@@ -0,0 +1,232 @@
+/*
+ * IXP2400 MSF network device driver for the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <asm/hardware/uengine.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include "ixpdev.h"
+#include "caleb.h"
+#include "ixp2400-msf.h"
+#include "pm3386.h"
+
+/***********************************************************************
+ * The Radisys ENP2611 is a PCI form factor board with three SFP GBIC
+ * slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA
+ * to the IXP2400.
+ *
+ *                +-------------+
+ * SFP GBIC #0 ---+             |       +---------+
+ *                |  PM3386 #0  +-------+         |
+ * SFP GBIC #1 ---+             |       | "Caleb" |         +---------+
+ *                +-------------+       |         |         |         |
+ *                                      | SPI-3   +---------+ IXP2400 |
+ *                +-------------+       | bridge  |         |         |
+ * SFP GBIC #2 ---+             |       | FPGA    |         +---------+
+ *                |  PM3386 #1  +-------+         |
+ *                |             |       +---------+
+ *                +-------------+
+ *              ^                   ^                  ^
+ *              | 1.25Gbaud         | 104MHz           | 104MHz
+ *              | SERDES ea.        | SPI-3 ea.        | SPI-3
+ *
+ ***********************************************************************/
+static struct ixp2400_msf_parameters enp2611_msf_parameters =
+{
+	.rx_mode =		IXP2400_RX_MODE_UTOPIA_POS |
+				IXP2400_RX_MODE_1x32 |
+				IXP2400_RX_MODE_MPHY |
+				IXP2400_RX_MODE_MPHY_32 |
+				IXP2400_RX_MODE_MPHY_POLLED_STATUS |
+				IXP2400_RX_MODE_MPHY_LEVEL3 |
+				IXP2400_RX_MODE_RBUF_SIZE_64,
+
+	.rxclk01_multiplier =	IXP2400_PLL_MULTIPLIER_16,
+
+	.rx_poll_ports =	3,
+
+	.rx_channel_mode = {
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE
+	},
+
+	.tx_mode =		IXP2400_TX_MODE_UTOPIA_POS |
+				IXP2400_TX_MODE_1x32 |
+				IXP2400_TX_MODE_MPHY |
+				IXP2400_TX_MODE_MPHY_32 |
+				IXP2400_TX_MODE_MPHY_POLLED_STATUS |
+				IXP2400_TX_MODE_MPHY_LEVEL3 |
+				IXP2400_TX_MODE_TBUF_SIZE_64,
+
+	.txclk01_multiplier =	IXP2400_PLL_MULTIPLIER_16,
+
+	.tx_poll_ports =	3,
+
+	.tx_channel_mode = {
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE
+	}
+};
+
+static struct net_device *nds[3];
+static struct timer_list link_check_timer;
+
+/* @@@ Poll the SFP moddef0 line too.  */
+/* @@@ Try to use the pm3386 DOOL interrupt as well.  */
+static void enp2611_check_link_status(unsigned long __dummy)
+{
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		struct net_device *dev;
+		int status;
+
+		dev = nds[i];
+		if (dev == NULL)
+			continue;
+
+		status = pm3386_is_link_up(i);
+		if (status && !netif_carrier_ok(dev)) {
+			/* @@@ Should report autonegotiation status.  */
+			printk(KERN_INFO "%s: NIC Link is Up\n", dev->name);
+
+			pm3386_enable_tx(i);
+			caleb_enable_tx(i);
+			netif_carrier_on(dev);
+		} else if (!status && netif_carrier_ok(dev)) {
+			printk(KERN_INFO "%s: NIC Link is Down\n", dev->name);
+
+			netif_carrier_off(dev);
+			caleb_disable_tx(i);
+			pm3386_disable_tx(i);
+		}
+	}
+
+	link_check_timer.expires = jiffies + HZ / 10;
+	add_timer(&link_check_timer);
+}
+
+static void enp2611_set_port_admin_status(int port, int up)
+{
+	if (up) {
+		caleb_enable_rx(port);
+
+		pm3386_set_carrier(port, 1);
+		pm3386_enable_rx(port);
+	} else {
+		caleb_disable_tx(port);
+		pm3386_disable_tx(port);
+		/* @@@ Flush out pending packets.  */
+		pm3386_set_carrier(port, 0);
+
+		pm3386_disable_rx(port);
+		caleb_disable_rx(port);
+	}
+}
+
+static int __init enp2611_init_module(void)
+{ 
+	int ports;
+	int i;
+
+	if (!machine_is_enp2611())
+		return -ENODEV;
+
+	caleb_reset();
+	pm3386_reset();
+
+	ports = pm3386_port_count();
+	for (i = 0; i < ports; i++) {
+		nds[i] = ixpdev_alloc(i, sizeof(struct ixpdev_priv));
+		if (nds[i] == NULL) {
+			while (--i >= 0)
+				free_netdev(nds[i]);
+			return -ENOMEM;
+		}
+
+		pm3386_init_port(i);
+		pm3386_get_mac(i, nds[i]->dev_addr);
+	}
+
+	ixp2400_msf_init(&enp2611_msf_parameters);
+
+	if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) {
+		for (i = 0; i < ports; i++)
+			if (nds[i])
+				free_netdev(nds[i]);
+		return -EINVAL;
+	}
+
+	init_timer(&link_check_timer);
+	link_check_timer.function = enp2611_check_link_status;
+	link_check_timer.expires = jiffies;
+	add_timer(&link_check_timer);
+
+	return 0;
+}
+
+static void __exit enp2611_cleanup_module(void)
+{
+	int i;
+
+	del_timer_sync(&link_check_timer);
+
+	ixpdev_deinit();
+	for (i = 0; i < 3; i++)
+		free_netdev(nds[i]);
+}
+
+module_init(enp2611_init_module);
+module_exit(enp2611_cleanup_module);
+MODULE_LICENSE("GPL");