tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
122struct enp2611_ixpdev_priv
123{
124 struct ixpdev_priv ixpdev_priv;
125 struct net_device_stats stats;
126};
127
128static struct net_device *nds[3];
129static struct timer_list link_check_timer;
130
131static struct net_device_stats *enp2611_get_stats(struct net_device *dev)
132{
133 struct enp2611_ixpdev_priv *ip = netdev_priv(dev);
134
135 pm3386_get_stats(ip->ixpdev_priv.channel, &(ip->stats));
136
137 return &(ip->stats);
138}
139
140/* @@@ Poll the SFP moddef0 line too. */
141/* @@@ Try to use the pm3386 DOOL interrupt as well. */
142static void enp2611_check_link_status(unsigned long __dummy)
143{
144 int i;
145
146 for (i = 0; i < 3; i++) {
147 struct net_device *dev;
148 int status;
149
150 dev = nds[i];
151 if (dev == NULL)
152 continue;
153
154 status = pm3386_is_link_up(i);
155 if (status && !netif_carrier_ok(dev)) {
156 /* @@@ Should report autonegotiation status. */
157 printk(KERN_INFO "%s: NIC Link is Up\n", dev->name);
158
159 pm3386_enable_tx(i);
160 caleb_enable_tx(i);
161 netif_carrier_on(dev);
162 } else if (!status && netif_carrier_ok(dev)) {
163 printk(KERN_INFO "%s: NIC Link is Down\n", dev->name);
164
165 netif_carrier_off(dev);
166 caleb_disable_tx(i);
167 pm3386_disable_tx(i);
168 }
169 }
170
171 link_check_timer.expires = jiffies + HZ / 10;
172 add_timer(&link_check_timer);
173}
174
175static void enp2611_set_port_admin_status(int port, int up)
176{
177 if (up) {
178 caleb_enable_rx(port);
179
180 pm3386_set_carrier(port, 1);
181 pm3386_enable_rx(port);
182 } else {
183 caleb_disable_tx(port);
184 pm3386_disable_tx(port);
185 /* @@@ Flush out pending packets. */
186 pm3386_set_carrier(port, 0);
187
188 pm3386_disable_rx(port);
189 caleb_disable_rx(port);
190 }
191}
192
193static int __init enp2611_init_module(void)
194{
195 int ports;
196 int i;
197
198 if (!machine_is_enp2611())
199 return -ENODEV;
200
201 caleb_reset();
202 pm3386_reset();
203
204 ports = pm3386_port_count();
205 for (i = 0; i < ports; i++) {
206 nds[i] = ixpdev_alloc(i, sizeof(struct enp2611_ixpdev_priv));
207 if (nds[i] == NULL) {
208 while (--i >= 0)
209 free_netdev(nds[i]);
210 return -ENOMEM;
211 }
212
213 SET_MODULE_OWNER(nds[i]);
214 nds[i]->get_stats = enp2611_get_stats;
215 pm3386_init_port(i);
216 pm3386_get_mac(i, nds[i]->dev_addr);
217 }
218
219 ixp2400_msf_init(&enp2611_msf_parameters);
220
221 if (ixpdev_init(ports, nds, enp2611_set_port_admin_status)) {
222 for (i = 0; i < ports; i++)
223 if (nds[i])
224 free_netdev(nds[i]);
225 return -EINVAL;
226 }
227
228 init_timer(&link_check_timer);
229 link_check_timer.function = enp2611_check_link_status;
230 link_check_timer.expires = jiffies;
231 add_timer(&link_check_timer);
232
233 return 0;
234}
235
236static void __exit enp2611_cleanup_module(void)
237{
238 int i;
239
240 del_timer_sync(&link_check_timer);
241
242 ixpdev_deinit();
243 for (i = 0; i < 3; i++)
244 free_netdev(nds[i]);
245}
246
247module_init(enp2611_init_module);
248module_exit(enp2611_cleanup_module);
249MODULE_LICENSE("GPL");