1/* 2 * IXP2400 MSF network device driver for the Radisys ENP2611 3 * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org> 4 * Dedicated to Marija Kulikova. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12#include <linux/module.h> 13#include <linux/kernel.h> 14#include <linux/netdevice.h> 15#include <linux/etherdevice.h> 16#include <linux/init.h> 17#include <linux/moduleparam.h> 18#include <asm/hardware/uengine.h> 19#include <asm/mach-types.h> 20#include <asm/io.h> 21#include "ixpdev.h" 22#include "caleb.h" 23#include "ixp2400-msf.h" 24#include "pm3386.h" 25 26/*********************************************************************** 27 * The Radisys ENP2611 is a PCI form factor board with three SFP GBIC 28 * slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA 29 * to the IXP2400. 30 * 31 * +-------------+ 32 * SFP GBIC #0 ---+ | +---------+ 33 * | PM3386 #0 +-------+ | 34 * SFP GBIC #1 ---+ | | "Caleb" | +---------+ 35 * +-------------+ | | | | 36 * | SPI-3 +---------+ IXP2400 | 37 * +-------------+ | bridge | | | 38 * SFP GBIC #2 ---+ | | FPGA | +---------+ 39 * | PM3386 #1 +-------+ | 40 * | | +---------+ 41 * +-------------+ 42 * ^ ^ ^ 43 * | 1.25Gbaud | 104MHz | 104MHz 44 * | SERDES ea. | SPI-3 ea. | SPI-3 45 * 46 ***********************************************************************/ 47static struct ixp2400_msf_parameters enp2611_msf_parameters = 48{ 49 .rx_mode = IXP2400_RX_MODE_UTOPIA_POS | 50 IXP2400_RX_MODE_1x32 | 51 IXP2400_RX_MODE_MPHY | 52 IXP2400_RX_MODE_MPHY_32 | 53 IXP2400_RX_MODE_MPHY_POLLED_STATUS | 54 IXP2400_RX_MODE_MPHY_LEVEL3 | 55 IXP2400_RX_MODE_RBUF_SIZE_64, 56 57 .rxclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, 58 59 .rx_poll_ports = 3, 60 61 .rx_channel_mode = { 62 IXP2400_PORT_RX_MODE_MASTER | 63 IXP2400_PORT_RX_MODE_POS_PHY | 64 IXP2400_PORT_RX_MODE_POS_PHY_L3 | 65 IXP2400_PORT_RX_MODE_ODD_PARITY | 66 IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, 67 68 IXP2400_PORT_RX_MODE_MASTER | 69 IXP2400_PORT_RX_MODE_POS_PHY | 70 IXP2400_PORT_RX_MODE_POS_PHY_L3 | 71 IXP2400_PORT_RX_MODE_ODD_PARITY | 72 IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, 73 74 IXP2400_PORT_RX_MODE_MASTER | 75 IXP2400_PORT_RX_MODE_POS_PHY | 76 IXP2400_PORT_RX_MODE_POS_PHY_L3 | 77 IXP2400_PORT_RX_MODE_ODD_PARITY | 78 IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, 79 80 IXP2400_PORT_RX_MODE_MASTER | 81 IXP2400_PORT_RX_MODE_POS_PHY | 82 IXP2400_PORT_RX_MODE_POS_PHY_L3 | 83 IXP2400_PORT_RX_MODE_ODD_PARITY | 84 IXP2400_PORT_RX_MODE_2_CYCLE_DECODE 85 }, 86 87 .tx_mode = IXP2400_TX_MODE_UTOPIA_POS | 88 IXP2400_TX_MODE_1x32 | 89 IXP2400_TX_MODE_MPHY | 90 IXP2400_TX_MODE_MPHY_32 | 91 IXP2400_TX_MODE_MPHY_POLLED_STATUS | 92 IXP2400_TX_MODE_MPHY_LEVEL3 | 93 IXP2400_TX_MODE_TBUF_SIZE_64, 94 95 .txclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, 96 97 .tx_poll_ports = 3, 98 99 .tx_channel_mode = { 100 IXP2400_PORT_TX_MODE_MASTER | 101 IXP2400_PORT_TX_MODE_POS_PHY | 102 IXP2400_PORT_TX_MODE_ODD_PARITY | 103 IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, 104 105 IXP2400_PORT_TX_MODE_MASTER | 106 IXP2400_PORT_TX_MODE_POS_PHY | 107 IXP2400_PORT_TX_MODE_ODD_PARITY | 108 IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, 109 110 IXP2400_PORT_TX_MODE_MASTER | 111 IXP2400_PORT_TX_MODE_POS_PHY | 112 IXP2400_PORT_TX_MODE_ODD_PARITY | 113 IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, 114 115 IXP2400_PORT_TX_MODE_MASTER | 116 IXP2400_PORT_TX_MODE_POS_PHY | 117 IXP2400_PORT_TX_MODE_ODD_PARITY | 118 IXP2400_PORT_TX_MODE_2_CYCLE_DECODE 119 } 120}; 121 122static struct net_device *nds[3]; 123static struct timer_list link_check_timer; 124 125/* @@@ Poll the SFP moddef0 line too. */ 126/* @@@ Try to use the pm3386 DOOL interrupt as well. */ 127static void enp2611_check_link_status(unsigned long __dummy) 128{ 129 int i; 130 131 for (i = 0; i < 3; i++) { 132 struct net_device *dev; 133 int status; 134 135 dev = nds[i]; 136 if (dev == NULL) 137 continue; 138 139 status = pm3386_is_link_up(i); 140 if (status && !netif_carrier_ok(dev)) { 141 /* @@@ Should report autonegotiation status. */ 142 printk(KERN_INFO "%s: NIC Link is Up\n", dev->name); 143 144 pm3386_enable_tx(i); 145 caleb_enable_tx(i); 146 netif_carrier_on(dev); 147 } else if (!status && netif_carrier_ok(dev)) { 148 printk(KERN_INFO "%s: NIC Link is Down\n", dev->name); 149 150 netif_carrier_off(dev); 151 caleb_disable_tx(i); 152 pm3386_disable_tx(i); 153 } 154 } 155 156 link_check_timer.expires = jiffies + HZ / 10; 157 add_timer(&link_check_timer); 158} 159 160static void enp2611_set_port_admin_status(int port, int up) 161{ 162 if (up) { 163 caleb_enable_rx(port); 164 165 pm3386_set_carrier(port, 1); 166 pm3386_enable_rx(port); 167 } else { 168 caleb_disable_tx(port); 169 pm3386_disable_tx(port); 170 /* @@@ Flush out pending packets. */ 171 pm3386_set_carrier(port, 0); 172 173 pm3386_disable_rx(port); 174 caleb_disable_rx(port); 175 } 176} 177 178static int __init enp2611_init_module(void) 179{ 180 int ports; 181 int i; 182 183 if (!machine_is_enp2611()) 184 return -ENODEV; 185 186 caleb_reset(); 187 pm3386_reset(); 188 189 ports = pm3386_port_count(); 190 for (i = 0; i < ports; i++) { 191 nds[i] = ixpdev_alloc(i, sizeof(struct ixpdev_priv)); 192 if (nds[i] == NULL) { 193 while (--i >= 0) 194 free_netdev(nds[i]); 195 return -ENOMEM; 196 } 197 198 pm3386_init_port(i); 199 pm3386_get_mac(i, nds[i]->dev_addr); 200 } 201 202 ixp2400_msf_init(&enp2611_msf_parameters); 203 204 if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) { 205 for (i = 0; i < ports; i++) 206 if (nds[i]) 207 free_netdev(nds[i]); 208 return -EINVAL; 209 } 210 211 init_timer(&link_check_timer); 212 link_check_timer.function = enp2611_check_link_status; 213 link_check_timer.expires = jiffies; 214 add_timer(&link_check_timer); 215 216 return 0; 217} 218 219static void __exit enp2611_cleanup_module(void) 220{ 221 int i; 222 223 del_timer_sync(&link_check_timer); 224 225 ixpdev_deinit(); 226 for (i = 0; i < 3; i++) 227 free_netdev(nds[i]); 228} 229 230module_init(enp2611_init_module); 231module_exit(enp2611_cleanup_module); 232MODULE_LICENSE("GPL"); 233