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path: root/drivers/net/ethernet/xscale/ixp2000/enp2611.c
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Diffstat (limited to 'drivers/net/ethernet/xscale/ixp2000/enp2611.c')
-rw-r--r--drivers/net/ethernet/xscale/ixp2000/enp2611.c232
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 00000000000..34a6cfd1793
--- /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");
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