Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 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/config.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/netdevice.h> |
| 16 | #include <linux/etherdevice.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/moduleparam.h> |
Lennert Buytenhek | 18ec5c7 | 2006-03-20 17:10:17 +0000 | [diff] [blame] | 19 | #include <asm/hardware/uengine.h> |
Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 20 | #include <asm/mach-types.h> |
| 21 | #include <asm/io.h> |
| 22 | #include "ixpdev.h" |
| 23 | #include "caleb.h" |
| 24 | #include "ixp2400-msf.h" |
| 25 | #include "pm3386.h" |
| 26 | |
| 27 | /*********************************************************************** |
| 28 | * The Radisys ENP2611 is a PCI form factor board with three SFP GBIC |
| 29 | * slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA |
| 30 | * to the IXP2400. |
| 31 | * |
| 32 | * +-------------+ |
| 33 | * SFP GBIC #0 ---+ | +---------+ |
| 34 | * | PM3386 #0 +-------+ | |
| 35 | * SFP GBIC #1 ---+ | | "Caleb" | +---------+ |
| 36 | * +-------------+ | | | | |
| 37 | * | SPI-3 +---------+ IXP2400 | |
| 38 | * +-------------+ | bridge | | | |
| 39 | * SFP GBIC #2 ---+ | | FPGA | +---------+ |
| 40 | * | PM3386 #1 +-------+ | |
| 41 | * | | +---------+ |
| 42 | * +-------------+ |
| 43 | * ^ ^ ^ |
| 44 | * | 1.25Gbaud | 104MHz | 104MHz |
| 45 | * | SERDES ea. | SPI-3 ea. | SPI-3 |
| 46 | * |
| 47 | ***********************************************************************/ |
| 48 | static struct ixp2400_msf_parameters enp2611_msf_parameters = |
| 49 | { |
| 50 | .rx_mode = IXP2400_RX_MODE_UTOPIA_POS | |
| 51 | IXP2400_RX_MODE_1x32 | |
| 52 | IXP2400_RX_MODE_MPHY | |
| 53 | IXP2400_RX_MODE_MPHY_32 | |
| 54 | IXP2400_RX_MODE_MPHY_POLLED_STATUS | |
| 55 | IXP2400_RX_MODE_MPHY_LEVEL3 | |
| 56 | IXP2400_RX_MODE_RBUF_SIZE_64, |
| 57 | |
| 58 | .rxclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, |
| 59 | |
| 60 | .rx_poll_ports = 3, |
| 61 | |
| 62 | .rx_channel_mode = { |
| 63 | IXP2400_PORT_RX_MODE_MASTER | |
| 64 | IXP2400_PORT_RX_MODE_POS_PHY | |
| 65 | IXP2400_PORT_RX_MODE_POS_PHY_L3 | |
| 66 | IXP2400_PORT_RX_MODE_ODD_PARITY | |
| 67 | IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, |
| 68 | |
| 69 | IXP2400_PORT_RX_MODE_MASTER | |
| 70 | IXP2400_PORT_RX_MODE_POS_PHY | |
| 71 | IXP2400_PORT_RX_MODE_POS_PHY_L3 | |
| 72 | IXP2400_PORT_RX_MODE_ODD_PARITY | |
| 73 | IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, |
| 74 | |
| 75 | IXP2400_PORT_RX_MODE_MASTER | |
| 76 | IXP2400_PORT_RX_MODE_POS_PHY | |
| 77 | IXP2400_PORT_RX_MODE_POS_PHY_L3 | |
| 78 | IXP2400_PORT_RX_MODE_ODD_PARITY | |
| 79 | IXP2400_PORT_RX_MODE_2_CYCLE_DECODE, |
| 80 | |
| 81 | IXP2400_PORT_RX_MODE_MASTER | |
| 82 | IXP2400_PORT_RX_MODE_POS_PHY | |
| 83 | IXP2400_PORT_RX_MODE_POS_PHY_L3 | |
| 84 | IXP2400_PORT_RX_MODE_ODD_PARITY | |
| 85 | IXP2400_PORT_RX_MODE_2_CYCLE_DECODE |
| 86 | }, |
| 87 | |
| 88 | .tx_mode = IXP2400_TX_MODE_UTOPIA_POS | |
| 89 | IXP2400_TX_MODE_1x32 | |
| 90 | IXP2400_TX_MODE_MPHY | |
| 91 | IXP2400_TX_MODE_MPHY_32 | |
| 92 | IXP2400_TX_MODE_MPHY_POLLED_STATUS | |
| 93 | IXP2400_TX_MODE_MPHY_LEVEL3 | |
| 94 | IXP2400_TX_MODE_TBUF_SIZE_64, |
| 95 | |
| 96 | .txclk01_multiplier = IXP2400_PLL_MULTIPLIER_16, |
| 97 | |
| 98 | .tx_poll_ports = 3, |
| 99 | |
| 100 | .tx_channel_mode = { |
| 101 | IXP2400_PORT_TX_MODE_MASTER | |
| 102 | IXP2400_PORT_TX_MODE_POS_PHY | |
| 103 | IXP2400_PORT_TX_MODE_ODD_PARITY | |
| 104 | IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, |
| 105 | |
| 106 | IXP2400_PORT_TX_MODE_MASTER | |
| 107 | IXP2400_PORT_TX_MODE_POS_PHY | |
| 108 | IXP2400_PORT_TX_MODE_ODD_PARITY | |
| 109 | IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, |
| 110 | |
| 111 | IXP2400_PORT_TX_MODE_MASTER | |
| 112 | IXP2400_PORT_TX_MODE_POS_PHY | |
| 113 | IXP2400_PORT_TX_MODE_ODD_PARITY | |
| 114 | IXP2400_PORT_TX_MODE_2_CYCLE_DECODE, |
| 115 | |
| 116 | IXP2400_PORT_TX_MODE_MASTER | |
| 117 | IXP2400_PORT_TX_MODE_POS_PHY | |
| 118 | IXP2400_PORT_TX_MODE_ODD_PARITY | |
| 119 | IXP2400_PORT_TX_MODE_2_CYCLE_DECODE |
| 120 | } |
| 121 | }; |
| 122 | |
| 123 | struct enp2611_ixpdev_priv |
| 124 | { |
| 125 | struct ixpdev_priv ixpdev_priv; |
| 126 | struct net_device_stats stats; |
| 127 | }; |
| 128 | |
| 129 | static struct net_device *nds[3]; |
| 130 | static struct timer_list link_check_timer; |
| 131 | |
| 132 | static struct net_device_stats *enp2611_get_stats(struct net_device *dev) |
| 133 | { |
| 134 | struct enp2611_ixpdev_priv *ip = netdev_priv(dev); |
| 135 | |
| 136 | pm3386_get_stats(ip->ixpdev_priv.channel, &(ip->stats)); |
| 137 | |
| 138 | return &(ip->stats); |
| 139 | } |
| 140 | |
| 141 | /* @@@ Poll the SFP moddef0 line too. */ |
| 142 | /* @@@ Try to use the pm3386 DOOL interrupt as well. */ |
| 143 | static void enp2611_check_link_status(unsigned long __dummy) |
| 144 | { |
| 145 | int i; |
| 146 | |
| 147 | for (i = 0; i < 3; i++) { |
| 148 | struct net_device *dev; |
| 149 | int status; |
| 150 | |
Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 151 | dev = nds[i]; |
| 152 | |
| 153 | status = pm3386_is_link_up(i); |
Lennert Buytenhek | c44185d | 2005-11-23 12:49:35 +0100 | [diff] [blame] | 154 | if (status && !netif_carrier_ok(dev)) { |
Lennert Buytenhek | 350f196 | 2005-11-23 12:49:40 +0100 | [diff] [blame] | 155 | /* @@@ Should report autonegotiation status. */ |
| 156 | printk(KERN_INFO "%s: NIC Link is Up\n", dev->name); |
| 157 | |
Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 158 | pm3386_enable_tx(i); |
| 159 | caleb_enable_tx(i); |
Lennert Buytenhek | c44185d | 2005-11-23 12:49:35 +0100 | [diff] [blame] | 160 | netif_carrier_on(dev); |
| 161 | } else if (!status && netif_carrier_ok(dev)) { |
Lennert Buytenhek | 350f196 | 2005-11-23 12:49:40 +0100 | [diff] [blame] | 162 | printk(KERN_INFO "%s: NIC Link is Down\n", dev->name); |
| 163 | |
Lennert Buytenhek | c44185d | 2005-11-23 12:49:35 +0100 | [diff] [blame] | 164 | netif_carrier_off(dev); |
Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 165 | caleb_disable_tx(i); |
| 166 | pm3386_disable_tx(i); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | link_check_timer.expires = jiffies + HZ / 10; |
| 171 | add_timer(&link_check_timer); |
| 172 | } |
| 173 | |
| 174 | static void enp2611_set_port_admin_status(int port, int up) |
| 175 | { |
| 176 | if (up) { |
| 177 | caleb_enable_rx(port); |
Lennert Buytenhek | cffbfca | 2005-11-23 12:49:59 +0100 | [diff] [blame] | 178 | |
| 179 | pm3386_set_carrier(port, 1); |
Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 180 | pm3386_enable_rx(port); |
| 181 | } else { |
| 182 | caleb_disable_tx(port); |
| 183 | pm3386_disable_tx(port); |
Lennert Buytenhek | cffbfca | 2005-11-23 12:49:59 +0100 | [diff] [blame] | 184 | /* @@@ Flush out pending packets. */ |
| 185 | pm3386_set_carrier(port, 0); |
| 186 | |
Lennert Buytenhek | 15d014d | 2005-11-11 18:23:13 +0100 | [diff] [blame] | 187 | pm3386_disable_rx(port); |
| 188 | caleb_disable_rx(port); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | static int __init enp2611_init_module(void) |
| 193 | { |
| 194 | int i; |
| 195 | |
| 196 | if (!machine_is_enp2611()) |
| 197 | return -ENODEV; |
| 198 | |
| 199 | caleb_reset(); |
| 200 | pm3386_reset(); |
| 201 | |
| 202 | for (i = 0; i < 3; i++) { |
| 203 | nds[i] = ixpdev_alloc(i, sizeof(struct enp2611_ixpdev_priv)); |
| 204 | if (nds[i] == NULL) { |
| 205 | while (--i >= 0) |
| 206 | free_netdev(nds[i]); |
| 207 | return -ENOMEM; |
| 208 | } |
| 209 | |
| 210 | SET_MODULE_OWNER(nds[i]); |
| 211 | nds[i]->get_stats = enp2611_get_stats; |
| 212 | pm3386_init_port(i); |
| 213 | pm3386_get_mac(i, nds[i]->dev_addr); |
| 214 | } |
| 215 | |
| 216 | ixp2400_msf_init(&enp2611_msf_parameters); |
| 217 | |
| 218 | if (ixpdev_init(3, nds, enp2611_set_port_admin_status)) { |
| 219 | for (i = 0; i < 3; i++) |
| 220 | free_netdev(nds[i]); |
| 221 | return -EINVAL; |
| 222 | } |
| 223 | |
| 224 | init_timer(&link_check_timer); |
| 225 | link_check_timer.function = enp2611_check_link_status; |
| 226 | link_check_timer.expires = jiffies; |
| 227 | add_timer(&link_check_timer); |
| 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static void __exit enp2611_cleanup_module(void) |
| 233 | { |
| 234 | int i; |
| 235 | |
| 236 | del_timer_sync(&link_check_timer); |
| 237 | |
| 238 | ixpdev_deinit(); |
| 239 | for (i = 0; i < 3; i++) |
| 240 | free_netdev(nds[i]); |
| 241 | } |
| 242 | |
| 243 | module_init(enp2611_init_module); |
| 244 | module_exit(enp2611_cleanup_module); |
| 245 | MODULE_LICENSE("GPL"); |