250 lines
6.4 KiB
C
250 lines
6.4 KiB
C
/*
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* IXP2400 MSF network device driver for the Radisys ENP2611
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* Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
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* Dedicated to Marija Kulikova.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/init.h>
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#include <linux/moduleparam.h>
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#include <asm/hardware/uengine.h>
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#include <asm/mach-types.h>
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#include <asm/io.h>
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#include "ixpdev.h"
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#include "caleb.h"
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#include "ixp2400-msf.h"
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#include "pm3386.h"
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/***********************************************************************
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* The Radisys ENP2611 is a PCI form factor board with three SFP GBIC
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* slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA
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* to the IXP2400.
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*
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* +-------------+
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* SFP GBIC #0 ---+ | +---------+
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* | PM3386 #0 +-------+ |
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* SFP GBIC #1 ---+ | | "Caleb" | +---------+
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* +-------------+ | | | |
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* | SPI-3 +---------+ IXP2400 |
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* +-------------+ | bridge | | |
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* SFP GBIC #2 ---+ | | FPGA | +---------+
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* | PM3386 #1 +-------+ |
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* | | +---------+
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* +-------------+
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* ^ ^ ^
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* | 1.25Gbaud | 104MHz | 104MHz
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* | SERDES ea. | SPI-3 ea. | SPI-3
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*
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***********************************************************************/
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static struct ixp2400_msf_parameters enp2611_msf_parameters =
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{
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.rx_mode = IXP2400_RX_MODE_UTOPIA_POS |
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IXP2400_RX_MODE_1x32 |
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IXP2400_RX_MODE_MPHY |
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IXP2400_RX_MODE_MPHY_32 |
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IXP2400_RX_MODE_MPHY_POLLED_STATUS |
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IXP2400_RX_MODE_MPHY_LEVEL3 |
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IXP2400_RX_MODE_RBUF_SIZE_64,
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.rxclk01_multiplier = IXP2400_PLL_MULTIPLIER_16,
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.rx_poll_ports = 3,
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.rx_channel_mode = {
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IXP2400_PORT_RX_MODE_MASTER |
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IXP2400_PORT_RX_MODE_POS_PHY |
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IXP2400_PORT_RX_MODE_POS_PHY_L3 |
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IXP2400_PORT_RX_MODE_ODD_PARITY |
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IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
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IXP2400_PORT_RX_MODE_MASTER |
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IXP2400_PORT_RX_MODE_POS_PHY |
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IXP2400_PORT_RX_MODE_POS_PHY_L3 |
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IXP2400_PORT_RX_MODE_ODD_PARITY |
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IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
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IXP2400_PORT_RX_MODE_MASTER |
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IXP2400_PORT_RX_MODE_POS_PHY |
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IXP2400_PORT_RX_MODE_POS_PHY_L3 |
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IXP2400_PORT_RX_MODE_ODD_PARITY |
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IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
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IXP2400_PORT_RX_MODE_MASTER |
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IXP2400_PORT_RX_MODE_POS_PHY |
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IXP2400_PORT_RX_MODE_POS_PHY_L3 |
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IXP2400_PORT_RX_MODE_ODD_PARITY |
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IXP2400_PORT_RX_MODE_2_CYCLE_DECODE
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},
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.tx_mode = IXP2400_TX_MODE_UTOPIA_POS |
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IXP2400_TX_MODE_1x32 |
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IXP2400_TX_MODE_MPHY |
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IXP2400_TX_MODE_MPHY_32 |
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IXP2400_TX_MODE_MPHY_POLLED_STATUS |
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IXP2400_TX_MODE_MPHY_LEVEL3 |
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IXP2400_TX_MODE_TBUF_SIZE_64,
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.txclk01_multiplier = IXP2400_PLL_MULTIPLIER_16,
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.tx_poll_ports = 3,
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.tx_channel_mode = {
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IXP2400_PORT_TX_MODE_MASTER |
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IXP2400_PORT_TX_MODE_POS_PHY |
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IXP2400_PORT_TX_MODE_ODD_PARITY |
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IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
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IXP2400_PORT_TX_MODE_MASTER |
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IXP2400_PORT_TX_MODE_POS_PHY |
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IXP2400_PORT_TX_MODE_ODD_PARITY |
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IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
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IXP2400_PORT_TX_MODE_MASTER |
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IXP2400_PORT_TX_MODE_POS_PHY |
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IXP2400_PORT_TX_MODE_ODD_PARITY |
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IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
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IXP2400_PORT_TX_MODE_MASTER |
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IXP2400_PORT_TX_MODE_POS_PHY |
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IXP2400_PORT_TX_MODE_ODD_PARITY |
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IXP2400_PORT_TX_MODE_2_CYCLE_DECODE
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}
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};
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struct enp2611_ixpdev_priv
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{
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struct ixpdev_priv ixpdev_priv;
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struct net_device_stats stats;
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};
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static struct net_device *nds[3];
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static struct timer_list link_check_timer;
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static struct net_device_stats *enp2611_get_stats(struct net_device *dev)
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{
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struct enp2611_ixpdev_priv *ip = netdev_priv(dev);
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pm3386_get_stats(ip->ixpdev_priv.channel, &(ip->stats));
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return &(ip->stats);
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}
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/* @@@ Poll the SFP moddef0 line too. */
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/* @@@ Try to use the pm3386 DOOL interrupt as well. */
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static void enp2611_check_link_status(unsigned long __dummy)
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{
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int i;
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for (i = 0; i < 3; i++) {
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struct net_device *dev;
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int status;
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dev = nds[i];
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if (dev == NULL)
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continue;
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status = pm3386_is_link_up(i);
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if (status && !netif_carrier_ok(dev)) {
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/* @@@ Should report autonegotiation status. */
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printk(KERN_INFO "%s: NIC Link is Up\n", dev->name);
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pm3386_enable_tx(i);
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caleb_enable_tx(i);
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netif_carrier_on(dev);
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} else if (!status && netif_carrier_ok(dev)) {
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printk(KERN_INFO "%s: NIC Link is Down\n", dev->name);
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netif_carrier_off(dev);
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caleb_disable_tx(i);
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pm3386_disable_tx(i);
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}
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}
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link_check_timer.expires = jiffies + HZ / 10;
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add_timer(&link_check_timer);
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}
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static void enp2611_set_port_admin_status(int port, int up)
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{
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if (up) {
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caleb_enable_rx(port);
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pm3386_set_carrier(port, 1);
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pm3386_enable_rx(port);
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} else {
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caleb_disable_tx(port);
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pm3386_disable_tx(port);
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/* @@@ Flush out pending packets. */
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pm3386_set_carrier(port, 0);
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pm3386_disable_rx(port);
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caleb_disable_rx(port);
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}
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}
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static int __init enp2611_init_module(void)
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{
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int ports;
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int i;
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if (!machine_is_enp2611())
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return -ENODEV;
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caleb_reset();
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pm3386_reset();
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ports = pm3386_port_count();
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for (i = 0; i < ports; i++) {
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nds[i] = ixpdev_alloc(i, sizeof(struct enp2611_ixpdev_priv));
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if (nds[i] == NULL) {
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while (--i >= 0)
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free_netdev(nds[i]);
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return -ENOMEM;
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}
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SET_MODULE_OWNER(nds[i]);
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nds[i]->get_stats = enp2611_get_stats;
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pm3386_init_port(i);
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pm3386_get_mac(i, nds[i]->dev_addr);
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}
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ixp2400_msf_init(&enp2611_msf_parameters);
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if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) {
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for (i = 0; i < ports; i++)
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if (nds[i])
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free_netdev(nds[i]);
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return -EINVAL;
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}
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init_timer(&link_check_timer);
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link_check_timer.function = enp2611_check_link_status;
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link_check_timer.expires = jiffies;
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add_timer(&link_check_timer);
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return 0;
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}
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static void __exit enp2611_cleanup_module(void)
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{
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int i;
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del_timer_sync(&link_check_timer);
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ixpdev_deinit();
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for (i = 0; i < 3; i++)
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free_netdev(nds[i]);
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}
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module_init(enp2611_init_module);
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module_exit(enp2611_cleanup_module);
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MODULE_LICENSE("GPL");
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