Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* $Id: ethernet.c,v 1.31 2004/10/18 14:49:03 starvik Exp $ |
2 | * | |
3 | * e100net.c: A network driver for the ETRAX 100LX network controller. | |
4 | * | |
5 | * Copyright (c) 1998-2002 Axis Communications AB. | |
6 | * | |
7 | * The outline of this driver comes from skeleton.c. | |
8 | * | |
9 | * $Log: ethernet.c,v $ | |
10 | * Revision 1.31 2004/10/18 14:49:03 starvik | |
11 | * Use RX interrupt as random source | |
12 | * | |
13 | * Revision 1.30 2004/09/29 10:44:04 starvik | |
14 | * Enabed MAC-address output again | |
15 | * | |
16 | * Revision 1.29 2004/08/24 07:14:05 starvik | |
17 | * Make use of generic MDIO interface and constants. | |
18 | * | |
19 | * Revision 1.28 2004/08/20 09:37:11 starvik | |
20 | * Added support for Intel LXT972A. Creds to Randy Scarborough. | |
21 | * | |
22 | * Revision 1.27 2004/08/16 12:37:22 starvik | |
23 | * Merge of Linux 2.6.8 | |
24 | * | |
25 | * Revision 1.25 2004/06/21 10:29:57 starvik | |
26 | * Merge of Linux 2.6.7 | |
27 | * | |
28 | * Revision 1.23 2004/06/09 05:29:22 starvik | |
29 | * Avoid any race where R_DMA_CH1_FIRST is NULL (may trigger cache bug). | |
30 | * | |
31 | * Revision 1.22 2004/05/14 07:58:03 starvik | |
32 | * Merge of changes from 2.4 | |
33 | * | |
34 | * Revision 1.20 2004/03/11 11:38:40 starvik | |
35 | * Merge of Linux 2.6.4 | |
36 | * | |
37 | * Revision 1.18 2003/12/03 13:45:46 starvik | |
38 | * Use hardware pad for short packets to prevent information leakage. | |
39 | * | |
40 | * Revision 1.17 2003/07/04 08:27:37 starvik | |
41 | * Merge of Linux 2.5.74 | |
42 | * | |
43 | * Revision 1.16 2003/04/24 08:28:22 starvik | |
44 | * New LED behaviour: LED off when no link | |
45 | * | |
46 | * Revision 1.15 2003/04/09 05:20:47 starvik | |
47 | * Merge of Linux 2.5.67 | |
48 | * | |
49 | * Revision 1.13 2003/03/06 16:11:01 henriken | |
50 | * Off by one error in group address register setting. | |
51 | * | |
52 | * Revision 1.12 2003/02/27 17:24:19 starvik | |
53 | * Corrected Rev to Revision | |
54 | * | |
55 | * Revision 1.11 2003/01/24 09:53:21 starvik | |
56 | * Oops. Initialize GA to 0, not to 1 | |
57 | * | |
58 | * Revision 1.10 2003/01/24 09:50:55 starvik | |
59 | * Initialize GA_0 and GA_1 to 0 to avoid matching of unwanted packets | |
60 | * | |
61 | * Revision 1.9 2002/12/13 07:40:58 starvik | |
62 | * Added basic ethtool interface | |
63 | * Handled out of memory when allocating new buffers | |
64 | * | |
65 | * Revision 1.8 2002/12/11 13:13:57 starvik | |
66 | * Added arch/ to v10 specific includes | |
67 | * Added fix from Linux 2.4 in serial.c (flush_to_flip_buffer) | |
68 | * | |
69 | * Revision 1.7 2002/11/26 09:41:42 starvik | |
70 | * Added e100_set_config (standard interface to set media type) | |
71 | * Added protection against preemptive scheduling | |
72 | * Added standard MII ioctls | |
73 | * | |
74 | * Revision 1.6 2002/11/21 07:18:18 starvik | |
75 | * Timers must be initialized in 2.5.48 | |
76 | * | |
77 | * Revision 1.5 2002/11/20 11:56:11 starvik | |
78 | * Merge of Linux 2.5.48 | |
79 | * | |
80 | * Revision 1.4 2002/11/18 07:26:46 starvik | |
81 | * Linux 2.5 port of latest Linux 2.4 ethernet driver | |
82 | * | |
83 | * Revision 1.33 2002/10/02 20:16:17 hp | |
84 | * SETF, SETS: Use underscored IO_x_ macros rather than incorrect token concatenation | |
85 | * | |
86 | * Revision 1.32 2002/09/16 06:05:58 starvik | |
87 | * Align memory returned by dev_alloc_skb | |
88 | * Moved handling of sent packets to interrupt to avoid reference counting problem | |
89 | * | |
90 | * Revision 1.31 2002/09/10 13:28:23 larsv | |
91 | * Return -EINVAL for unknown ioctls to avoid confusing tools that tests | |
92 | * for supported functionality by issuing special ioctls, i.e. wireless | |
93 | * extensions. | |
94 | * | |
95 | * Revision 1.30 2002/05/07 18:50:08 johana | |
96 | * Correct spelling in comments. | |
97 | * | |
98 | * Revision 1.29 2002/05/06 05:38:49 starvik | |
99 | * Performance improvements: | |
100 | * Large packets are not copied (breakpoint set to 256 bytes) | |
101 | * The cache bug workaround is delayed until half of the receive list | |
102 | * has been used | |
103 | * Added transmit list | |
104 | * Transmit interrupts are only enabled when transmit queue is full | |
105 | * | |
106 | * Revision 1.28.2.1 2002/04/30 08:15:51 starvik | |
107 | * Performance improvements: | |
108 | * Large packets are not copied (breakpoint set to 256 bytes) | |
109 | * The cache bug workaround is delayed until half of the receive list | |
110 | * has been used. | |
111 | * Added transmit list | |
112 | * Transmit interrupts are only enabled when transmit queue is full | |
113 | * | |
114 | * Revision 1.28 2002/04/22 11:47:21 johana | |
115 | * Fix according to 2.4.19-pre7. time_after/time_before and | |
116 | * missing end of comment. | |
117 | * The patch has a typo for ethernet.c in e100_clear_network_leds(), | |
118 | * that is fixed here. | |
119 | * | |
120 | * Revision 1.27 2002/04/12 11:55:11 bjornw | |
121 | * Added TODO | |
122 | * | |
123 | * Revision 1.26 2002/03/15 17:11:02 bjornw | |
124 | * Use prepare_rx_descriptor after the CPU has touched the receiving descs | |
125 | * | |
126 | * Revision 1.25 2002/03/08 13:07:53 bjornw | |
127 | * Unnecessary spinlock removed | |
128 | * | |
129 | * Revision 1.24 2002/02/20 12:57:43 fredriks | |
130 | * Replaced MIN() with min(). | |
131 | * | |
132 | * Revision 1.23 2002/02/20 10:58:14 fredriks | |
133 | * Strip the Ethernet checksum (4 bytes) before forwarding a frame to upper layers. | |
134 | * | |
135 | * Revision 1.22 2002/01/30 07:48:22 matsfg | |
136 | * Initiate R_NETWORK_TR_CTRL | |
137 | * | |
138 | * Revision 1.21 2001/11/23 11:54:49 starvik | |
139 | * Added IFF_PROMISC and IFF_ALLMULTI handling in set_multicast_list | |
140 | * Removed compiler warnings | |
141 | * | |
142 | * Revision 1.20 2001/11/12 19:26:00 pkj | |
143 | * * Corrected e100_negotiate() to not assign half to current_duplex when | |
144 | * it was supposed to compare them... | |
145 | * * Cleaned up failure handling in e100_open(). | |
146 | * * Fixed compiler warnings. | |
147 | * | |
148 | * Revision 1.19 2001/11/09 07:43:09 starvik | |
149 | * Added full duplex support | |
150 | * Added ioctl to set speed and duplex | |
151 | * Clear LED timer only runs when LED is lit | |
152 | * | |
153 | * Revision 1.18 2001/10/03 14:40:43 jonashg | |
154 | * Update rx_bytes counter. | |
155 | * | |
156 | * Revision 1.17 2001/06/11 12:43:46 olof | |
157 | * Modified defines for network LED behavior | |
158 | * | |
159 | * Revision 1.16 2001/05/30 06:12:46 markusl | |
160 | * TxDesc.next should not be set to NULL | |
161 | * | |
162 | * Revision 1.15 2001/05/29 10:27:04 markusl | |
163 | * Updated after review remarks: | |
164 | * +Use IO_EXTRACT | |
165 | * +Handle underrun | |
166 | * | |
167 | * Revision 1.14 2001/05/29 09:20:14 jonashg | |
168 | * Use driver name on printk output so one can tell which driver that complains. | |
169 | * | |
170 | * Revision 1.13 2001/05/09 12:35:59 johana | |
171 | * Use DMA_NBR and IRQ_NBR defines from dma.h and irq.h | |
172 | * | |
173 | * Revision 1.12 2001/04/05 11:43:11 tobiasa | |
174 | * Check dev before panic. | |
175 | * | |
176 | * Revision 1.11 2001/04/04 11:21:05 markusl | |
177 | * Updated according to review remarks | |
178 | * | |
179 | * Revision 1.10 2001/03/26 16:03:06 bjornw | |
180 | * Needs linux/config.h | |
181 | * | |
182 | * Revision 1.9 2001/03/19 14:47:48 pkj | |
183 | * * Make sure there is always a pause after the network LEDs are | |
184 | * changed so they will not look constantly lit during heavy traffic. | |
185 | * * Always use HZ when setting times relative to jiffies. | |
186 | * * Use LED_NETWORK_SET() when setting the network LEDs. | |
187 | * | |
188 | * Revision 1.8 2001/02/27 13:52:48 bjornw | |
189 | * malloc.h -> slab.h | |
190 | * | |
191 | * Revision 1.7 2001/02/23 13:46:38 bjornw | |
192 | * Spellling check | |
193 | * | |
194 | * Revision 1.6 2001/01/26 15:21:04 starvik | |
195 | * Don't disable interrupts while reading MDIO registers (MDIO is slow) | |
196 | * Corrected promiscuous mode | |
197 | * Improved deallocation of IRQs ("ifconfig eth0 down" now works) | |
198 | * | |
199 | * Revision 1.5 2000/11/29 17:22:22 bjornw | |
200 | * Get rid of the udword types legacy stuff | |
201 | * | |
202 | * Revision 1.4 2000/11/22 16:36:09 bjornw | |
203 | * Please marketing by using the correct case when spelling Etrax. | |
204 | * | |
205 | * Revision 1.3 2000/11/21 16:43:04 bjornw | |
206 | * Minor short->int change | |
207 | * | |
208 | * Revision 1.2 2000/11/08 14:27:57 bjornw | |
209 | * 2.4 port | |
210 | * | |
211 | * Revision 1.1 2000/11/06 13:56:00 bjornw | |
212 | * Verbatim copy of the 1.24 version of e100net.c from elinux | |
213 | * | |
214 | * Revision 1.24 2000/10/04 15:55:23 bjornw | |
215 | * * Use virt_to_phys etc. for DMA addresses | |
216 | * * Removed bogus CHECKSUM_UNNECESSARY | |
217 | * | |
218 | * | |
219 | */ | |
220 | ||
1da177e4 LT |
221 | |
222 | #include <linux/module.h> | |
223 | ||
224 | #include <linux/kernel.h> | |
1da177e4 LT |
225 | #include <linux/delay.h> |
226 | #include <linux/types.h> | |
227 | #include <linux/fcntl.h> | |
228 | #include <linux/interrupt.h> | |
229 | #include <linux/ptrace.h> | |
230 | #include <linux/ioport.h> | |
231 | #include <linux/in.h> | |
232 | #include <linux/slab.h> | |
233 | #include <linux/string.h> | |
234 | #include <linux/spinlock.h> | |
235 | #include <linux/errno.h> | |
236 | #include <linux/init.h> | |
1977f032 | 237 | #include <linux/bitops.h> |
1da177e4 LT |
238 | |
239 | #include <linux/if.h> | |
240 | #include <linux/mii.h> | |
241 | #include <linux/netdevice.h> | |
242 | #include <linux/etherdevice.h> | |
243 | #include <linux/skbuff.h> | |
244 | #include <linux/ethtool.h> | |
245 | ||
246 | #include <asm/arch/svinto.h>/* DMA and register descriptions */ | |
247 | #include <asm/io.h> /* LED_* I/O functions */ | |
248 | #include <asm/irq.h> | |
249 | #include <asm/dma.h> | |
250 | #include <asm/system.h> | |
1da177e4 LT |
251 | #include <asm/ethernet.h> |
252 | #include <asm/cache.h> | |
bafef0ae | 253 | #include <asm/arch/io_interface_mux.h> |
1da177e4 LT |
254 | |
255 | //#define ETHDEBUG | |
256 | #define D(x) | |
257 | ||
258 | /* | |
259 | * The name of the card. Is used for messages and in the requests for | |
260 | * io regions, irqs and dma channels | |
261 | */ | |
262 | ||
263 | static const char* cardname = "ETRAX 100LX built-in ethernet controller"; | |
264 | ||
265 | /* A default ethernet address. Highlevel SW will set the real one later */ | |
266 | ||
267 | static struct sockaddr default_mac = { | |
268 | 0, | |
269 | { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 } | |
270 | }; | |
271 | ||
272 | /* Information that need to be kept for each board. */ | |
273 | struct net_local { | |
274 | struct net_device_stats stats; | |
275 | struct mii_if_info mii_if; | |
276 | ||
277 | /* Tx control lock. This protects the transmit buffer ring | |
278 | * state along with the "tx full" state of the driver. This | |
279 | * means all netif_queue flow control actions are protected | |
280 | * by this lock as well. | |
281 | */ | |
282 | spinlock_t lock; | |
bafef0ae JN |
283 | |
284 | spinlock_t led_lock; /* Protect LED state */ | |
285 | spinlock_t transceiver_lock; /* Protect transceiver state. */ | |
1da177e4 LT |
286 | }; |
287 | ||
288 | typedef struct etrax_eth_descr | |
289 | { | |
290 | etrax_dma_descr descr; | |
291 | struct sk_buff* skb; | |
292 | } etrax_eth_descr; | |
293 | ||
294 | /* Some transceivers requires special handling */ | |
295 | struct transceiver_ops | |
296 | { | |
297 | unsigned int oui; | |
298 | void (*check_speed)(struct net_device* dev); | |
299 | void (*check_duplex)(struct net_device* dev); | |
300 | }; | |
301 | ||
1da177e4 LT |
302 | /* Duplex settings */ |
303 | enum duplex | |
304 | { | |
305 | half, | |
306 | full, | |
307 | autoneg | |
308 | }; | |
309 | ||
310 | /* Dma descriptors etc. */ | |
311 | ||
bafef0ae | 312 | #define MAX_MEDIA_DATA_SIZE 1522 |
1da177e4 LT |
313 | |
314 | #define MIN_PACKET_LEN 46 | |
315 | #define ETHER_HEAD_LEN 14 | |
316 | ||
317 | /* | |
318 | ** MDIO constants. | |
319 | */ | |
320 | #define MDIO_START 0x1 | |
321 | #define MDIO_READ 0x2 | |
322 | #define MDIO_WRITE 0x1 | |
323 | #define MDIO_PREAMBLE 0xfffffffful | |
324 | ||
325 | /* Broadcom specific */ | |
326 | #define MDIO_AUX_CTRL_STATUS_REG 0x18 | |
327 | #define MDIO_BC_FULL_DUPLEX_IND 0x1 | |
328 | #define MDIO_BC_SPEED 0x2 | |
329 | ||
330 | /* TDK specific */ | |
331 | #define MDIO_TDK_DIAGNOSTIC_REG 18 | |
332 | #define MDIO_TDK_DIAGNOSTIC_RATE 0x400 | |
333 | #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 | |
334 | ||
335 | /*Intel LXT972A specific*/ | |
336 | #define MDIO_INT_STATUS_REG_2 0x0011 | |
bafef0ae JN |
337 | #define MDIO_INT_FULL_DUPLEX_IND (1 << 9) |
338 | #define MDIO_INT_SPEED (1 << 14) | |
1da177e4 LT |
339 | |
340 | /* Network flash constants */ | |
341 | #define NET_FLASH_TIME (HZ/50) /* 20 ms */ | |
342 | #define NET_FLASH_PAUSE (HZ/100) /* 10 ms */ | |
343 | #define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */ | |
344 | #define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */ | |
345 | ||
346 | #define NO_NETWORK_ACTIVITY 0 | |
347 | #define NETWORK_ACTIVITY 1 | |
348 | ||
bafef0ae JN |
349 | #define NBR_OF_RX_DESC 32 |
350 | #define NBR_OF_TX_DESC 16 | |
1da177e4 LT |
351 | |
352 | /* Large packets are sent directly to upper layers while small packets are */ | |
353 | /* copied (to reduce memory waste). The following constant decides the breakpoint */ | |
354 | #define RX_COPYBREAK 256 | |
355 | ||
356 | /* Due to a chip bug we need to flush the cache when descriptors are returned */ | |
357 | /* to the DMA. To decrease performance impact we return descriptors in chunks. */ | |
358 | /* The following constant determines the number of descriptors to return. */ | |
359 | #define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2 | |
360 | ||
361 | #define GET_BIT(bit,val) (((val) >> (bit)) & 0x01) | |
362 | ||
363 | /* Define some macros to access ETRAX 100 registers */ | |
364 | #define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ | |
365 | IO_FIELD_(reg##_, field##_, val) | |
366 | #define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ | |
367 | IO_STATE_(reg##_, field##_, _##val) | |
368 | ||
369 | static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to | |
370 | to be processed */ | |
371 | static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */ | |
1da177e4 LT |
372 | |
373 | static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32))); | |
374 | ||
375 | static etrax_eth_descr* myFirstTxDesc; /* First packet not yet sent */ | |
376 | static etrax_eth_descr* myLastTxDesc; /* End of send queue */ | |
377 | static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */ | |
378 | static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32))); | |
379 | ||
380 | static unsigned int network_rec_config_shadow = 0; | |
1da177e4 LT |
381 | |
382 | static unsigned int network_tr_ctrl_shadow = 0; | |
383 | ||
384 | /* Network speed indication. */ | |
8d06afab IM |
385 | static DEFINE_TIMER(speed_timer, NULL, 0, 0); |
386 | static DEFINE_TIMER(clear_led_timer, NULL, 0, 0); | |
1da177e4 LT |
387 | static int current_speed; /* Speed read from transceiver */ |
388 | static int current_speed_selection; /* Speed selected by user */ | |
389 | static unsigned long led_next_time; | |
390 | static int led_active; | |
391 | static int rx_queue_len; | |
392 | ||
393 | /* Duplex */ | |
8d06afab | 394 | static DEFINE_TIMER(duplex_timer, NULL, 0, 0); |
1da177e4 LT |
395 | static int full_duplex; |
396 | static enum duplex current_duplex; | |
397 | ||
398 | /* Index to functions, as function prototypes. */ | |
399 | ||
400 | static int etrax_ethernet_init(void); | |
401 | ||
402 | static int e100_open(struct net_device *dev); | |
403 | static int e100_set_mac_address(struct net_device *dev, void *addr); | |
404 | static int e100_send_packet(struct sk_buff *skb, struct net_device *dev); | |
7d12e780 DH |
405 | static irqreturn_t e100rxtx_interrupt(int irq, void *dev_id); |
406 | static irqreturn_t e100nw_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
407 | static void e100_rx(struct net_device *dev); |
408 | static int e100_close(struct net_device *dev); | |
409 | static int e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); | |
1da177e4 LT |
410 | static int e100_set_config(struct net_device* dev, struct ifmap* map); |
411 | static void e100_tx_timeout(struct net_device *dev); | |
412 | static struct net_device_stats *e100_get_stats(struct net_device *dev); | |
413 | static void set_multicast_list(struct net_device *dev); | |
bafef0ae | 414 | static void e100_hardware_send_packet(struct net_local* np, char *buf, int length); |
1da177e4 LT |
415 | static void update_rx_stats(struct net_device_stats *); |
416 | static void update_tx_stats(struct net_device_stats *); | |
417 | static int e100_probe_transceiver(struct net_device* dev); | |
418 | ||
419 | static void e100_check_speed(unsigned long priv); | |
420 | static void e100_set_speed(struct net_device* dev, unsigned long speed); | |
421 | static void e100_check_duplex(unsigned long priv); | |
422 | static void e100_set_duplex(struct net_device* dev, enum duplex); | |
423 | static void e100_negotiate(struct net_device* dev); | |
424 | ||
425 | static int e100_get_mdio_reg(struct net_device *dev, int phy_id, int location); | |
426 | static void e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value); | |
427 | ||
428 | static void e100_send_mdio_cmd(unsigned short cmd, int write_cmd); | |
429 | static void e100_send_mdio_bit(unsigned char bit); | |
430 | static unsigned char e100_receive_mdio_bit(void); | |
431 | static void e100_reset_transceiver(struct net_device* net); | |
432 | ||
433 | static void e100_clear_network_leds(unsigned long dummy); | |
434 | static void e100_set_network_leds(int active); | |
435 | ||
7282d491 | 436 | static const struct ethtool_ops e100_ethtool_ops; |
bafef0ae JN |
437 | #if defined(CONFIG_ETRAX_NO_PHY) |
438 | static void dummy_check_speed(struct net_device* dev); | |
439 | static void dummy_check_duplex(struct net_device* dev); | |
440 | #else | |
1da177e4 LT |
441 | static void broadcom_check_speed(struct net_device* dev); |
442 | static void broadcom_check_duplex(struct net_device* dev); | |
443 | static void tdk_check_speed(struct net_device* dev); | |
444 | static void tdk_check_duplex(struct net_device* dev); | |
445 | static void intel_check_speed(struct net_device* dev); | |
446 | static void intel_check_duplex(struct net_device* dev); | |
447 | static void generic_check_speed(struct net_device* dev); | |
448 | static void generic_check_duplex(struct net_device* dev); | |
bafef0ae JN |
449 | #endif |
450 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
451 | static void e100_netpoll(struct net_device* dev); | |
452 | #endif | |
453 | ||
454 | static int autoneg_normal = 1; | |
1da177e4 LT |
455 | |
456 | struct transceiver_ops transceivers[] = | |
457 | { | |
bafef0ae JN |
458 | #if defined(CONFIG_ETRAX_NO_PHY) |
459 | {0x0000, dummy_check_speed, dummy_check_duplex} /* Dummy */ | |
460 | #else | |
1da177e4 LT |
461 | {0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */ |
462 | {0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */ | |
463 | {0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */ | |
464 | {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ | |
465 | {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ | |
bafef0ae | 466 | #endif |
1da177e4 LT |
467 | }; |
468 | ||
bafef0ae JN |
469 | struct transceiver_ops* transceiver = &transceivers[0]; |
470 | ||
1da177e4 LT |
471 | #define tx_done(dev) (*R_DMA_CH0_CMD == 0) |
472 | ||
473 | /* | |
474 | * Check for a network adaptor of this type, and return '0' if one exists. | |
475 | * If dev->base_addr == 0, probe all likely locations. | |
476 | * If dev->base_addr == 1, always return failure. | |
477 | * If dev->base_addr == 2, allocate space for the device and return success | |
478 | * (detachable devices only). | |
479 | */ | |
480 | ||
481 | static int __init | |
482 | etrax_ethernet_init(void) | |
483 | { | |
484 | struct net_device *dev; | |
485 | struct net_local* np; | |
486 | int i, err; | |
487 | ||
488 | printk(KERN_INFO | |
bafef0ae | 489 | "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n"); |
1da177e4 | 490 | |
bafef0ae JN |
491 | if (cris_request_io_interface(if_eth, cardname)) { |
492 | printk(KERN_CRIT "etrax_ethernet_init failed to get IO interface\n"); | |
493 | return -EBUSY; | |
494 | } | |
1da177e4 | 495 | |
bafef0ae | 496 | dev = alloc_etherdev(sizeof(struct net_local)); |
1da177e4 LT |
497 | if (!dev) |
498 | return -ENOMEM; | |
499 | ||
bafef0ae JN |
500 | np = netdev_priv(dev); |
501 | ||
502 | /* we do our own locking */ | |
503 | dev->features |= NETIF_F_LLTX; | |
504 | ||
1da177e4 LT |
505 | dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ |
506 | ||
507 | /* now setup our etrax specific stuff */ | |
508 | ||
509 | dev->irq = NETWORK_DMA_RX_IRQ_NBR; /* we really use DMATX as well... */ | |
510 | dev->dma = NETWORK_RX_DMA_NBR; | |
511 | ||
512 | /* fill in our handlers so the network layer can talk to us in the future */ | |
513 | ||
514 | dev->open = e100_open; | |
515 | dev->hard_start_xmit = e100_send_packet; | |
516 | dev->stop = e100_close; | |
517 | dev->get_stats = e100_get_stats; | |
518 | dev->set_multicast_list = set_multicast_list; | |
519 | dev->set_mac_address = e100_set_mac_address; | |
76f2b4d9 | 520 | dev->ethtool_ops = &e100_ethtool_ops; |
1da177e4 LT |
521 | dev->do_ioctl = e100_ioctl; |
522 | dev->set_config = e100_set_config; | |
523 | dev->tx_timeout = e100_tx_timeout; | |
bafef0ae JN |
524 | #ifdef CONFIG_NET_POLL_CONTROLLER |
525 | dev->poll_controller = e100_netpoll; | |
526 | #endif | |
527 | ||
528 | spin_lock_init(&np->lock); | |
529 | spin_lock_init(&np->led_lock); | |
530 | spin_lock_init(&np->transceiver_lock); | |
1da177e4 LT |
531 | |
532 | /* Initialise the list of Etrax DMA-descriptors */ | |
533 | ||
534 | /* Initialise receive descriptors */ | |
535 | ||
536 | for (i = 0; i < NBR_OF_RX_DESC; i++) { | |
bafef0ae JN |
537 | /* Allocate two extra cachelines to make sure that buffer used |
538 | * by DMA does not share cacheline with any other data (to | |
539 | * avoid cache bug) | |
1da177e4 LT |
540 | */ |
541 | RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); | |
92b1f905 DR |
542 | if (!RxDescList[i].skb) |
543 | return -ENOMEM; | |
1da177e4 LT |
544 | RxDescList[i].descr.ctrl = 0; |
545 | RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE; | |
546 | RxDescList[i].descr.next = virt_to_phys(&RxDescList[i + 1]); | |
547 | RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data)); | |
548 | RxDescList[i].descr.status = 0; | |
549 | RxDescList[i].descr.hw_len = 0; | |
550 | prepare_rx_descriptor(&RxDescList[i].descr); | |
551 | } | |
552 | ||
553 | RxDescList[NBR_OF_RX_DESC - 1].descr.ctrl = d_eol; | |
554 | RxDescList[NBR_OF_RX_DESC - 1].descr.next = virt_to_phys(&RxDescList[0]); | |
555 | rx_queue_len = 0; | |
556 | ||
557 | /* Initialize transmit descriptors */ | |
558 | for (i = 0; i < NBR_OF_TX_DESC; i++) { | |
559 | TxDescList[i].descr.ctrl = 0; | |
560 | TxDescList[i].descr.sw_len = 0; | |
561 | TxDescList[i].descr.next = virt_to_phys(&TxDescList[i + 1].descr); | |
562 | TxDescList[i].descr.buf = 0; | |
563 | TxDescList[i].descr.status = 0; | |
564 | TxDescList[i].descr.hw_len = 0; | |
565 | TxDescList[i].skb = 0; | |
566 | } | |
567 | ||
568 | TxDescList[NBR_OF_TX_DESC - 1].descr.ctrl = d_eol; | |
569 | TxDescList[NBR_OF_TX_DESC - 1].descr.next = virt_to_phys(&TxDescList[0].descr); | |
570 | ||
571 | /* Initialise initial pointers */ | |
572 | ||
573 | myNextRxDesc = &RxDescList[0]; | |
574 | myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; | |
1da177e4 LT |
575 | myFirstTxDesc = &TxDescList[0]; |
576 | myNextTxDesc = &TxDescList[0]; | |
577 | myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1]; | |
578 | ||
579 | /* Register device */ | |
580 | err = register_netdev(dev); | |
581 | if (err) { | |
582 | free_netdev(dev); | |
583 | return err; | |
584 | } | |
585 | ||
586 | /* set the default MAC address */ | |
587 | ||
588 | e100_set_mac_address(dev, &default_mac); | |
589 | ||
590 | /* Initialize speed indicator stuff. */ | |
591 | ||
592 | current_speed = 10; | |
593 | current_speed_selection = 0; /* Auto */ | |
594 | speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; | |
bafef0ae | 595 | speed_timer.data = (unsigned long)dev; |
1da177e4 LT |
596 | speed_timer.function = e100_check_speed; |
597 | ||
598 | clear_led_timer.function = e100_clear_network_leds; | |
bafef0ae | 599 | clear_led_timer.data = (unsigned long)dev; |
1da177e4 LT |
600 | |
601 | full_duplex = 0; | |
602 | current_duplex = autoneg; | |
603 | duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; | |
604 | duplex_timer.data = (unsigned long)dev; | |
605 | duplex_timer.function = e100_check_duplex; | |
606 | ||
607 | /* Initialize mii interface */ | |
1da177e4 LT |
608 | np->mii_if.phy_id_mask = 0x1f; |
609 | np->mii_if.reg_num_mask = 0x1f; | |
610 | np->mii_if.dev = dev; | |
611 | np->mii_if.mdio_read = e100_get_mdio_reg; | |
612 | np->mii_if.mdio_write = e100_set_mdio_reg; | |
613 | ||
614 | /* Initialize group address registers to make sure that no */ | |
615 | /* unwanted addresses are matched */ | |
616 | *R_NETWORK_GA_0 = 0x00000000; | |
617 | *R_NETWORK_GA_1 = 0x00000000; | |
bafef0ae JN |
618 | |
619 | /* Initialize next time the led can flash */ | |
620 | led_next_time = jiffies; | |
1da177e4 LT |
621 | return 0; |
622 | } | |
623 | ||
624 | /* set MAC address of the interface. called from the core after a | |
625 | * SIOCSIFADDR ioctl, and from the bootup above. | |
626 | */ | |
627 | ||
628 | static int | |
629 | e100_set_mac_address(struct net_device *dev, void *p) | |
630 | { | |
bafef0ae | 631 | struct net_local *np = netdev_priv(dev); |
1da177e4 | 632 | struct sockaddr *addr = p; |
3eed6393 | 633 | DECLARE_MAC_BUF(mac); |
1da177e4 LT |
634 | |
635 | spin_lock(&np->lock); /* preemption protection */ | |
636 | ||
637 | /* remember it */ | |
638 | ||
639 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
640 | ||
641 | /* Write it to the hardware. | |
642 | * Note the way the address is wrapped: | |
643 | * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24); | |
644 | * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8); | |
645 | */ | |
646 | ||
647 | *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | | |
648 | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); | |
649 | *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); | |
650 | *R_NETWORK_SA_2 = 0; | |
651 | ||
652 | /* show it in the log as well */ | |
653 | ||
0795af57 JP |
654 | printk(KERN_INFO "%s: changed MAC to %s\n", |
655 | dev->name, print_mac(mac, dev->dev_addr)); | |
1da177e4 LT |
656 | |
657 | spin_unlock(&np->lock); | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
662 | /* | |
663 | * Open/initialize the board. This is called (in the current kernel) | |
664 | * sometime after booting when the 'ifconfig' program is run. | |
665 | * | |
666 | * This routine should set everything up anew at each open, even | |
667 | * registers that "should" only need to be set once at boot, so that | |
668 | * there is non-reboot way to recover if something goes wrong. | |
669 | */ | |
670 | ||
671 | static int | |
672 | e100_open(struct net_device *dev) | |
673 | { | |
674 | unsigned long flags; | |
675 | ||
676 | /* enable the MDIO output pin */ | |
677 | ||
678 | *R_NETWORK_MGM_CTRL = IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable); | |
679 | ||
680 | *R_IRQ_MASK0_CLR = | |
681 | IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | | |
682 | IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | | |
683 | IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); | |
684 | ||
685 | /* clear dma0 and 1 eop and descr irq masks */ | |
686 | *R_IRQ_MASK2_CLR = | |
687 | IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | | |
688 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | | |
689 | IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | | |
690 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); | |
691 | ||
692 | /* Reset and wait for the DMA channels */ | |
693 | ||
694 | RESET_DMA(NETWORK_TX_DMA_NBR); | |
695 | RESET_DMA(NETWORK_RX_DMA_NBR); | |
696 | WAIT_DMA(NETWORK_TX_DMA_NBR); | |
697 | WAIT_DMA(NETWORK_RX_DMA_NBR); | |
698 | ||
699 | /* Initialise the etrax network controller */ | |
700 | ||
701 | /* allocate the irq corresponding to the receiving DMA */ | |
702 | ||
703 | if (request_irq(NETWORK_DMA_RX_IRQ_NBR, e100rxtx_interrupt, | |
1fb9df5d | 704 | IRQF_SAMPLE_RANDOM, cardname, (void *)dev)) { |
1da177e4 LT |
705 | goto grace_exit0; |
706 | } | |
707 | ||
708 | /* allocate the irq corresponding to the transmitting DMA */ | |
709 | ||
710 | if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_interrupt, 0, | |
711 | cardname, (void *)dev)) { | |
712 | goto grace_exit1; | |
713 | } | |
714 | ||
715 | /* allocate the irq corresponding to the network errors etc */ | |
716 | ||
717 | if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0, | |
718 | cardname, (void *)dev)) { | |
719 | goto grace_exit2; | |
720 | } | |
721 | ||
bafef0ae JN |
722 | /* |
723 | * Always allocate the DMA channels after the IRQ, | |
724 | * and clean up on failure. | |
725 | */ | |
726 | ||
727 | if (cris_request_dma(NETWORK_TX_DMA_NBR, | |
728 | cardname, | |
729 | DMA_VERBOSE_ON_ERROR, | |
730 | dma_eth)) { | |
731 | goto grace_exit3; | |
732 | } | |
733 | ||
734 | if (cris_request_dma(NETWORK_RX_DMA_NBR, | |
735 | cardname, | |
736 | DMA_VERBOSE_ON_ERROR, | |
737 | dma_eth)) { | |
738 | goto grace_exit4; | |
739 | } | |
740 | ||
1da177e4 LT |
741 | /* give the HW an idea of what MAC address we want */ |
742 | ||
743 | *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | | |
744 | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); | |
745 | *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); | |
746 | *R_NETWORK_SA_2 = 0; | |
747 | ||
748 | #if 0 | |
749 | /* use promiscuous mode for testing */ | |
750 | *R_NETWORK_GA_0 = 0xffffffff; | |
751 | *R_NETWORK_GA_1 = 0xffffffff; | |
752 | ||
753 | *R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */ | |
754 | #else | |
bafef0ae | 755 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, max_size, size1522); |
1da177e4 LT |
756 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive); |
757 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable); | |
758 | SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); | |
759 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
760 | #endif | |
761 | ||
762 | *R_NETWORK_GEN_CONFIG = | |
763 | IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) | | |
764 | IO_STATE(R_NETWORK_GEN_CONFIG, enable, on); | |
765 | ||
766 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); | |
767 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, delay, none); | |
768 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cancel, dont); | |
769 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cd, enable); | |
770 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, retry, enable); | |
771 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, pad, enable); | |
772 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable); | |
773 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; | |
774 | ||
bafef0ae | 775 | local_irq_save(flags); |
1da177e4 LT |
776 | |
777 | /* enable the irq's for ethernet DMA */ | |
778 | ||
779 | *R_IRQ_MASK2_SET = | |
780 | IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | | |
781 | IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); | |
782 | ||
783 | *R_IRQ_MASK0_SET = | |
784 | IO_STATE(R_IRQ_MASK0_SET, overrun, set) | | |
785 | IO_STATE(R_IRQ_MASK0_SET, underrun, set) | | |
786 | IO_STATE(R_IRQ_MASK0_SET, excessive_col, set); | |
787 | ||
788 | /* make sure the irqs are cleared */ | |
789 | ||
790 | *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); | |
791 | *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); | |
792 | ||
793 | /* make sure the rec and transmit error counters are cleared */ | |
794 | ||
795 | (void)*R_REC_COUNTERS; /* dummy read */ | |
796 | (void)*R_TR_COUNTERS; /* dummy read */ | |
797 | ||
798 | /* start the receiving DMA channel so we can receive packets from now on */ | |
799 | ||
800 | *R_DMA_CH1_FIRST = virt_to_phys(myNextRxDesc); | |
801 | *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start); | |
802 | ||
803 | /* Set up transmit DMA channel so it can be restarted later */ | |
804 | ||
805 | *R_DMA_CH0_FIRST = 0; | |
806 | *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); | |
bafef0ae | 807 | netif_start_queue(dev); |
1da177e4 | 808 | |
bafef0ae | 809 | local_irq_restore(flags); |
1da177e4 LT |
810 | |
811 | /* Probe for transceiver */ | |
812 | if (e100_probe_transceiver(dev)) | |
bafef0ae | 813 | goto grace_exit5; |
1da177e4 LT |
814 | |
815 | /* Start duplex/speed timers */ | |
816 | add_timer(&speed_timer); | |
817 | add_timer(&duplex_timer); | |
818 | ||
819 | /* We are now ready to accept transmit requeusts from | |
820 | * the queueing layer of the networking. | |
821 | */ | |
bafef0ae | 822 | netif_carrier_on(dev); |
1da177e4 LT |
823 | |
824 | return 0; | |
825 | ||
bafef0ae JN |
826 | grace_exit5: |
827 | cris_free_dma(NETWORK_RX_DMA_NBR, cardname); | |
828 | grace_exit4: | |
829 | cris_free_dma(NETWORK_TX_DMA_NBR, cardname); | |
1da177e4 LT |
830 | grace_exit3: |
831 | free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); | |
832 | grace_exit2: | |
833 | free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); | |
834 | grace_exit1: | |
835 | free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); | |
836 | grace_exit0: | |
837 | return -EAGAIN; | |
838 | } | |
839 | ||
bafef0ae JN |
840 | #if defined(CONFIG_ETRAX_NO_PHY) |
841 | static void | |
842 | dummy_check_speed(struct net_device* dev) | |
843 | { | |
844 | current_speed = 100; | |
845 | } | |
846 | #else | |
1da177e4 LT |
847 | static void |
848 | generic_check_speed(struct net_device* dev) | |
849 | { | |
850 | unsigned long data; | |
bafef0ae JN |
851 | struct net_local *np = netdev_priv(dev); |
852 | ||
853 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); | |
1da177e4 LT |
854 | if ((data & ADVERTISE_100FULL) || |
855 | (data & ADVERTISE_100HALF)) | |
856 | current_speed = 100; | |
857 | else | |
858 | current_speed = 10; | |
859 | } | |
860 | ||
861 | static void | |
862 | tdk_check_speed(struct net_device* dev) | |
863 | { | |
864 | unsigned long data; | |
bafef0ae JN |
865 | struct net_local *np = netdev_priv(dev); |
866 | ||
867 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
868 | MDIO_TDK_DIAGNOSTIC_REG); | |
1da177e4 LT |
869 | current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); |
870 | } | |
871 | ||
872 | static void | |
873 | broadcom_check_speed(struct net_device* dev) | |
874 | { | |
875 | unsigned long data; | |
bafef0ae JN |
876 | struct net_local *np = netdev_priv(dev); |
877 | ||
878 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
879 | MDIO_AUX_CTRL_STATUS_REG); | |
1da177e4 LT |
880 | current_speed = (data & MDIO_BC_SPEED ? 100 : 10); |
881 | } | |
882 | ||
883 | static void | |
884 | intel_check_speed(struct net_device* dev) | |
885 | { | |
886 | unsigned long data; | |
bafef0ae JN |
887 | struct net_local *np = netdev_priv(dev); |
888 | ||
889 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
890 | MDIO_INT_STATUS_REG_2); | |
1da177e4 LT |
891 | current_speed = (data & MDIO_INT_SPEED ? 100 : 10); |
892 | } | |
bafef0ae | 893 | #endif |
1da177e4 LT |
894 | static void |
895 | e100_check_speed(unsigned long priv) | |
896 | { | |
897 | struct net_device* dev = (struct net_device*)priv; | |
bafef0ae | 898 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
899 | static int led_initiated = 0; |
900 | unsigned long data; | |
901 | int old_speed = current_speed; | |
902 | ||
bafef0ae JN |
903 | spin_lock(&np->transceiver_lock); |
904 | ||
905 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMSR); | |
1da177e4 LT |
906 | if (!(data & BMSR_LSTATUS)) { |
907 | current_speed = 0; | |
908 | } else { | |
909 | transceiver->check_speed(dev); | |
910 | } | |
911 | ||
bafef0ae | 912 | spin_lock(&np->led_lock); |
1da177e4 LT |
913 | if ((old_speed != current_speed) || !led_initiated) { |
914 | led_initiated = 1; | |
915 | e100_set_network_leds(NO_NETWORK_ACTIVITY); | |
bafef0ae JN |
916 | if (current_speed) |
917 | netif_carrier_on(dev); | |
918 | else | |
919 | netif_carrier_off(dev); | |
1da177e4 | 920 | } |
bafef0ae | 921 | spin_unlock(&np->led_lock); |
1da177e4 LT |
922 | |
923 | /* Reinitialize the timer. */ | |
924 | speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; | |
925 | add_timer(&speed_timer); | |
bafef0ae JN |
926 | |
927 | spin_unlock(&np->transceiver_lock); | |
1da177e4 LT |
928 | } |
929 | ||
930 | static void | |
931 | e100_negotiate(struct net_device* dev) | |
932 | { | |
bafef0ae JN |
933 | struct net_local *np = netdev_priv(dev); |
934 | unsigned short data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
935 | MII_ADVERTISE); | |
1da177e4 LT |
936 | |
937 | /* Discard old speed and duplex settings */ | |
938 | data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL | | |
939 | ADVERTISE_10HALF | ADVERTISE_10FULL); | |
940 | ||
941 | switch (current_speed_selection) { | |
bafef0ae | 942 | case 10: |
1da177e4 LT |
943 | if (current_duplex == full) |
944 | data |= ADVERTISE_10FULL; | |
945 | else if (current_duplex == half) | |
946 | data |= ADVERTISE_10HALF; | |
947 | else | |
948 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL; | |
949 | break; | |
950 | ||
bafef0ae | 951 | case 100: |
1da177e4 LT |
952 | if (current_duplex == full) |
953 | data |= ADVERTISE_100FULL; | |
954 | else if (current_duplex == half) | |
955 | data |= ADVERTISE_100HALF; | |
956 | else | |
957 | data |= ADVERTISE_100HALF | ADVERTISE_100FULL; | |
958 | break; | |
959 | ||
bafef0ae | 960 | case 0: /* Auto */ |
1da177e4 LT |
961 | if (current_duplex == full) |
962 | data |= ADVERTISE_100FULL | ADVERTISE_10FULL; | |
963 | else if (current_duplex == half) | |
964 | data |= ADVERTISE_100HALF | ADVERTISE_10HALF; | |
965 | else | |
966 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL | | |
967 | ADVERTISE_100HALF | ADVERTISE_100FULL; | |
968 | break; | |
969 | ||
bafef0ae | 970 | default: /* assume autoneg speed and duplex */ |
1da177e4 LT |
971 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL | |
972 | ADVERTISE_100HALF | ADVERTISE_100FULL; | |
bafef0ae | 973 | break; |
1da177e4 LT |
974 | } |
975 | ||
bafef0ae | 976 | e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE, data); |
1da177e4 LT |
977 | |
978 | /* Renegotiate with link partner */ | |
bafef0ae JN |
979 | if (autoneg_normal) { |
980 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); | |
1da177e4 | 981 | data |= BMCR_ANENABLE | BMCR_ANRESTART; |
bafef0ae JN |
982 | } |
983 | e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR, data); | |
1da177e4 LT |
984 | } |
985 | ||
986 | static void | |
987 | e100_set_speed(struct net_device* dev, unsigned long speed) | |
988 | { | |
bafef0ae JN |
989 | struct net_local *np = netdev_priv(dev); |
990 | ||
991 | spin_lock(&np->transceiver_lock); | |
1da177e4 LT |
992 | if (speed != current_speed_selection) { |
993 | current_speed_selection = speed; | |
994 | e100_negotiate(dev); | |
995 | } | |
bafef0ae | 996 | spin_unlock(&np->transceiver_lock); |
1da177e4 LT |
997 | } |
998 | ||
999 | static void | |
1000 | e100_check_duplex(unsigned long priv) | |
1001 | { | |
1002 | struct net_device *dev = (struct net_device *)priv; | |
bafef0ae JN |
1003 | struct net_local *np = netdev_priv(dev); |
1004 | int old_duplex; | |
1005 | ||
1006 | spin_lock(&np->transceiver_lock); | |
1007 | old_duplex = full_duplex; | |
1da177e4 LT |
1008 | transceiver->check_duplex(dev); |
1009 | if (old_duplex != full_duplex) { | |
1010 | /* Duplex changed */ | |
1011 | SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); | |
1012 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1013 | } | |
1014 | ||
1015 | /* Reinitialize the timer. */ | |
1016 | duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; | |
1017 | add_timer(&duplex_timer); | |
1018 | np->mii_if.full_duplex = full_duplex; | |
bafef0ae | 1019 | spin_unlock(&np->transceiver_lock); |
1da177e4 | 1020 | } |
bafef0ae JN |
1021 | #if defined(CONFIG_ETRAX_NO_PHY) |
1022 | static void | |
1023 | dummy_check_duplex(struct net_device* dev) | |
1024 | { | |
1025 | full_duplex = 1; | |
1026 | } | |
1027 | #else | |
1da177e4 LT |
1028 | static void |
1029 | generic_check_duplex(struct net_device* dev) | |
1030 | { | |
1031 | unsigned long data; | |
bafef0ae JN |
1032 | struct net_local *np = netdev_priv(dev); |
1033 | ||
1034 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); | |
1da177e4 LT |
1035 | if ((data & ADVERTISE_10FULL) || |
1036 | (data & ADVERTISE_100FULL)) | |
1037 | full_duplex = 1; | |
1038 | else | |
1039 | full_duplex = 0; | |
1040 | } | |
1041 | ||
1042 | static void | |
1043 | tdk_check_duplex(struct net_device* dev) | |
1044 | { | |
1045 | unsigned long data; | |
bafef0ae JN |
1046 | struct net_local *np = netdev_priv(dev); |
1047 | ||
1048 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
1049 | MDIO_TDK_DIAGNOSTIC_REG); | |
1da177e4 LT |
1050 | full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; |
1051 | } | |
1052 | ||
1053 | static void | |
1054 | broadcom_check_duplex(struct net_device* dev) | |
1055 | { | |
1056 | unsigned long data; | |
bafef0ae JN |
1057 | struct net_local *np = netdev_priv(dev); |
1058 | ||
1059 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
1060 | MDIO_AUX_CTRL_STATUS_REG); | |
1da177e4 LT |
1061 | full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; |
1062 | } | |
1063 | ||
1064 | static void | |
1065 | intel_check_duplex(struct net_device* dev) | |
1066 | { | |
1067 | unsigned long data; | |
bafef0ae JN |
1068 | struct net_local *np = netdev_priv(dev); |
1069 | ||
1070 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
1071 | MDIO_INT_STATUS_REG_2); | |
1da177e4 LT |
1072 | full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; |
1073 | } | |
bafef0ae | 1074 | #endif |
1da177e4 LT |
1075 | static void |
1076 | e100_set_duplex(struct net_device* dev, enum duplex new_duplex) | |
1077 | { | |
bafef0ae JN |
1078 | struct net_local *np = netdev_priv(dev); |
1079 | ||
1080 | spin_lock(&np->transceiver_lock); | |
1da177e4 LT |
1081 | if (new_duplex != current_duplex) { |
1082 | current_duplex = new_duplex; | |
1083 | e100_negotiate(dev); | |
1084 | } | |
bafef0ae | 1085 | spin_unlock(&np->transceiver_lock); |
1da177e4 LT |
1086 | } |
1087 | ||
1088 | static int | |
1089 | e100_probe_transceiver(struct net_device* dev) | |
1090 | { | |
633edf5a AM |
1091 | int ret = 0; |
1092 | ||
bafef0ae | 1093 | #if !defined(CONFIG_ETRAX_NO_PHY) |
1da177e4 LT |
1094 | unsigned int phyid_high; |
1095 | unsigned int phyid_low; | |
1096 | unsigned int oui; | |
1097 | struct transceiver_ops* ops = NULL; | |
bafef0ae JN |
1098 | struct net_local *np = netdev_priv(dev); |
1099 | ||
1100 | spin_lock(&np->transceiver_lock); | |
1da177e4 LT |
1101 | |
1102 | /* Probe MDIO physical address */ | |
bafef0ae JN |
1103 | for (np->mii_if.phy_id = 0; np->mii_if.phy_id <= 31; |
1104 | np->mii_if.phy_id++) { | |
1105 | if (e100_get_mdio_reg(dev, | |
1106 | np->mii_if.phy_id, MII_BMSR) != 0xffff) | |
1da177e4 LT |
1107 | break; |
1108 | } | |
633edf5a AM |
1109 | if (np->mii_if.phy_id == 32) { |
1110 | ret = -ENODEV; | |
1111 | goto out; | |
1112 | } | |
1da177e4 LT |
1113 | |
1114 | /* Get manufacturer */ | |
bafef0ae JN |
1115 | phyid_high = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID1); |
1116 | phyid_low = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID2); | |
1da177e4 LT |
1117 | oui = (phyid_high << 6) | (phyid_low >> 10); |
1118 | ||
1119 | for (ops = &transceivers[0]; ops->oui; ops++) { | |
1120 | if (ops->oui == oui) | |
1121 | break; | |
1122 | } | |
1123 | transceiver = ops; | |
633edf5a | 1124 | out: |
bafef0ae JN |
1125 | spin_unlock(&np->transceiver_lock); |
1126 | #endif | |
633edf5a | 1127 | return ret; |
1da177e4 LT |
1128 | } |
1129 | ||
1130 | static int | |
1131 | e100_get_mdio_reg(struct net_device *dev, int phy_id, int location) | |
1132 | { | |
1133 | unsigned short cmd; /* Data to be sent on MDIO port */ | |
1134 | int data; /* Data read from MDIO */ | |
1135 | int bitCounter; | |
1136 | ||
1137 | /* Start of frame, OP Code, Physical Address, Register Address */ | |
1138 | cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (phy_id << 7) | | |
1139 | (location << 2); | |
1140 | ||
1141 | e100_send_mdio_cmd(cmd, 0); | |
1142 | ||
1143 | data = 0; | |
1144 | ||
1145 | /* Data... */ | |
1146 | for (bitCounter=15; bitCounter>=0 ; bitCounter--) { | |
1147 | data |= (e100_receive_mdio_bit() << bitCounter); | |
1148 | } | |
1149 | ||
1150 | return data; | |
1151 | } | |
1152 | ||
1153 | static void | |
1154 | e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value) | |
1155 | { | |
1156 | int bitCounter; | |
1157 | unsigned short cmd; | |
1158 | ||
1159 | cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (phy_id << 7) | | |
1160 | (location << 2); | |
1161 | ||
1162 | e100_send_mdio_cmd(cmd, 1); | |
1163 | ||
1164 | /* Data... */ | |
1165 | for (bitCounter=15; bitCounter>=0 ; bitCounter--) { | |
1166 | e100_send_mdio_bit(GET_BIT(bitCounter, value)); | |
1167 | } | |
1168 | ||
1169 | } | |
1170 | ||
1171 | static void | |
1172 | e100_send_mdio_cmd(unsigned short cmd, int write_cmd) | |
1173 | { | |
1174 | int bitCounter; | |
1175 | unsigned char data = 0x2; | |
1176 | ||
1177 | /* Preamble */ | |
1178 | for (bitCounter = 31; bitCounter>= 0; bitCounter--) | |
1179 | e100_send_mdio_bit(GET_BIT(bitCounter, MDIO_PREAMBLE)); | |
1180 | ||
1181 | for (bitCounter = 15; bitCounter >= 2; bitCounter--) | |
1182 | e100_send_mdio_bit(GET_BIT(bitCounter, cmd)); | |
1183 | ||
1184 | /* Turnaround */ | |
1185 | for (bitCounter = 1; bitCounter >= 0 ; bitCounter--) | |
1186 | if (write_cmd) | |
1187 | e100_send_mdio_bit(GET_BIT(bitCounter, data)); | |
1188 | else | |
1189 | e100_receive_mdio_bit(); | |
1190 | } | |
1191 | ||
1192 | static void | |
1193 | e100_send_mdio_bit(unsigned char bit) | |
1194 | { | |
1195 | *R_NETWORK_MGM_CTRL = | |
1196 | IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | | |
1197 | IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); | |
1198 | udelay(1); | |
1199 | *R_NETWORK_MGM_CTRL = | |
1200 | IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | | |
1201 | IO_MASK(R_NETWORK_MGM_CTRL, mdck) | | |
1202 | IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); | |
1203 | udelay(1); | |
1204 | } | |
1205 | ||
1206 | static unsigned char | |
1207 | e100_receive_mdio_bit() | |
1208 | { | |
1209 | unsigned char bit; | |
1210 | *R_NETWORK_MGM_CTRL = 0; | |
1211 | bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT); | |
1212 | udelay(1); | |
1213 | *R_NETWORK_MGM_CTRL = IO_MASK(R_NETWORK_MGM_CTRL, mdck); | |
1214 | udelay(1); | |
1215 | return bit; | |
1216 | } | |
1217 | ||
1218 | static void | |
1219 | e100_reset_transceiver(struct net_device* dev) | |
1220 | { | |
bafef0ae | 1221 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1222 | unsigned short cmd; |
1223 | unsigned short data; | |
1224 | int bitCounter; | |
1225 | ||
bafef0ae | 1226 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); |
1da177e4 | 1227 | |
bafef0ae | 1228 | cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (np->mii_if.phy_id << 7) | (MII_BMCR << 2); |
1da177e4 LT |
1229 | |
1230 | e100_send_mdio_cmd(cmd, 1); | |
1231 | ||
1232 | data |= 0x8000; | |
1233 | ||
1234 | for (bitCounter = 15; bitCounter >= 0 ; bitCounter--) { | |
1235 | e100_send_mdio_bit(GET_BIT(bitCounter, data)); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | /* Called by upper layers if they decide it took too long to complete | |
1240 | * sending a packet - we need to reset and stuff. | |
1241 | */ | |
1242 | ||
1243 | static void | |
1244 | e100_tx_timeout(struct net_device *dev) | |
1245 | { | |
bafef0ae | 1246 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1247 | unsigned long flags; |
1248 | ||
1249 | spin_lock_irqsave(&np->lock, flags); | |
1250 | ||
1251 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
1252 | tx_done(dev) ? "IRQ problem" : "network cable problem"); | |
1253 | ||
1254 | /* remember we got an error */ | |
1255 | ||
1256 | np->stats.tx_errors++; | |
1257 | ||
1258 | /* reset the TX DMA in case it has hung on something */ | |
1259 | ||
1260 | RESET_DMA(NETWORK_TX_DMA_NBR); | |
1261 | WAIT_DMA(NETWORK_TX_DMA_NBR); | |
1262 | ||
1263 | /* Reset the transceiver. */ | |
1264 | ||
1265 | e100_reset_transceiver(dev); | |
1266 | ||
1267 | /* and get rid of the packets that never got an interrupt */ | |
bafef0ae | 1268 | while (myFirstTxDesc != myNextTxDesc) { |
1da177e4 LT |
1269 | dev_kfree_skb(myFirstTxDesc->skb); |
1270 | myFirstTxDesc->skb = 0; | |
1271 | myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); | |
1272 | } | |
1273 | ||
1274 | /* Set up transmit DMA channel so it can be restarted later */ | |
1275 | *R_DMA_CH0_FIRST = 0; | |
1276 | *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); | |
1277 | ||
1278 | /* tell the upper layers we're ok again */ | |
1279 | ||
1280 | netif_wake_queue(dev); | |
1281 | spin_unlock_irqrestore(&np->lock, flags); | |
1282 | } | |
1283 | ||
1284 | ||
1285 | /* This will only be invoked if the driver is _not_ in XOFF state. | |
1286 | * What this means is that we need not check it, and that this | |
1287 | * invariant will hold if we make sure that the netif_*_queue() | |
1288 | * calls are done at the proper times. | |
1289 | */ | |
1290 | ||
1291 | static int | |
1292 | e100_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1293 | { | |
bafef0ae | 1294 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1295 | unsigned char *buf = skb->data; |
1296 | unsigned long flags; | |
1297 | ||
1298 | #ifdef ETHDEBUG | |
1299 | printk("send packet len %d\n", length); | |
1300 | #endif | |
1301 | spin_lock_irqsave(&np->lock, flags); /* protect from tx_interrupt and ourself */ | |
1302 | ||
1303 | myNextTxDesc->skb = skb; | |
1304 | ||
1305 | dev->trans_start = jiffies; | |
1306 | ||
bafef0ae | 1307 | e100_hardware_send_packet(np, buf, skb->len); |
1da177e4 LT |
1308 | |
1309 | myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); | |
1310 | ||
1311 | /* Stop queue if full */ | |
1312 | if (myNextTxDesc == myFirstTxDesc) { | |
1313 | netif_stop_queue(dev); | |
1314 | } | |
1315 | ||
1316 | spin_unlock_irqrestore(&np->lock, flags); | |
1317 | ||
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | /* | |
1322 | * The typical workload of the driver: | |
1323 | * Handle the network interface interrupts. | |
1324 | */ | |
1325 | ||
1326 | static irqreturn_t | |
7d12e780 | 1327 | e100rxtx_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1328 | { |
1329 | struct net_device *dev = (struct net_device *)dev_id; | |
bafef0ae JN |
1330 | struct net_local *np = netdev_priv(dev); |
1331 | unsigned long irqbits; | |
1da177e4 | 1332 | |
bafef0ae JN |
1333 | /* |
1334 | * Note that both rx and tx interrupts are blocked at this point, | |
1335 | * regardless of which got us here. | |
1336 | */ | |
1337 | ||
1338 | irqbits = *R_IRQ_MASK2_RD; | |
1da177e4 LT |
1339 | |
1340 | /* Handle received packets */ | |
1341 | if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) { | |
1342 | /* acknowledge the eop interrupt */ | |
1343 | ||
1344 | *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); | |
1345 | ||
1346 | /* check if one or more complete packets were indeed received */ | |
1347 | ||
1348 | while ((*R_DMA_CH1_FIRST != virt_to_phys(myNextRxDesc)) && | |
1349 | (myNextRxDesc != myLastRxDesc)) { | |
1350 | /* Take out the buffer and give it to the OS, then | |
1351 | * allocate a new buffer to put a packet in. | |
1352 | */ | |
1353 | e100_rx(dev); | |
bafef0ae | 1354 | np->stats.rx_packets++; |
1da177e4 LT |
1355 | /* restart/continue on the channel, for safety */ |
1356 | *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart); | |
1357 | /* clear dma channel 1 eop/descr irq bits */ | |
1358 | *R_DMA_CH1_CLR_INTR = | |
1359 | IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do) | | |
1360 | IO_STATE(R_DMA_CH1_CLR_INTR, clr_descr, do); | |
1361 | ||
1362 | /* now, we might have gotten another packet | |
1363 | so we have to loop back and check if so */ | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* Report any packets that have been sent */ | |
bafef0ae JN |
1368 | while (virt_to_phys(myFirstTxDesc) != *R_DMA_CH0_FIRST && |
1369 | (netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) { | |
1da177e4 LT |
1370 | np->stats.tx_bytes += myFirstTxDesc->skb->len; |
1371 | np->stats.tx_packets++; | |
1372 | ||
1373 | /* dma is ready with the transmission of the data in tx_skb, so now | |
1374 | we can release the skb memory */ | |
1375 | dev_kfree_skb_irq(myFirstTxDesc->skb); | |
1376 | myFirstTxDesc->skb = 0; | |
1377 | myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); | |
bafef0ae JN |
1378 | /* Wake up queue. */ |
1379 | netif_wake_queue(dev); | |
1da177e4 LT |
1380 | } |
1381 | ||
1382 | if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { | |
bafef0ae | 1383 | /* acknowledge the eop interrupt. */ |
1da177e4 | 1384 | *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); |
1da177e4 LT |
1385 | } |
1386 | ||
1da177e4 LT |
1387 | return IRQ_HANDLED; |
1388 | } | |
1389 | ||
1390 | static irqreturn_t | |
7d12e780 | 1391 | e100nw_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1392 | { |
1393 | struct net_device *dev = (struct net_device *)dev_id; | |
bafef0ae | 1394 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1395 | unsigned long irqbits = *R_IRQ_MASK0_RD; |
1396 | ||
1397 | /* check for underrun irq */ | |
1398 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) { | |
1399 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); | |
1400 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; | |
1401 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); | |
1402 | np->stats.tx_errors++; | |
1403 | D(printk("ethernet receiver underrun!\n")); | |
1404 | } | |
1405 | ||
1406 | /* check for overrun irq */ | |
1407 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) { | |
1408 | update_rx_stats(&np->stats); /* this will ack the irq */ | |
1409 | D(printk("ethernet receiver overrun!\n")); | |
1410 | } | |
1411 | /* check for excessive collision irq */ | |
1412 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, excessive_col, active)) { | |
1413 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); | |
1414 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; | |
1415 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); | |
1da177e4 LT |
1416 | np->stats.tx_errors++; |
1417 | D(printk("ethernet excessive collisions!\n")); | |
1418 | } | |
1419 | return IRQ_HANDLED; | |
1420 | } | |
1421 | ||
1422 | /* We have a good packet(s), get it/them out of the buffers. */ | |
1423 | static void | |
1424 | e100_rx(struct net_device *dev) | |
1425 | { | |
1426 | struct sk_buff *skb; | |
1427 | int length = 0; | |
bafef0ae | 1428 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1429 | unsigned char *skb_data_ptr; |
1430 | #ifdef ETHDEBUG | |
1431 | int i; | |
1432 | #endif | |
bafef0ae JN |
1433 | etrax_eth_descr *prevRxDesc; /* The descriptor right before myNextRxDesc */ |
1434 | spin_lock(&np->led_lock); | |
1da177e4 LT |
1435 | if (!led_active && time_after(jiffies, led_next_time)) { |
1436 | /* light the network leds depending on the current speed. */ | |
1437 | e100_set_network_leds(NETWORK_ACTIVITY); | |
1438 | ||
1439 | /* Set the earliest time we may clear the LED */ | |
1440 | led_next_time = jiffies + NET_FLASH_TIME; | |
1441 | led_active = 1; | |
1442 | mod_timer(&clear_led_timer, jiffies + HZ/10); | |
1443 | } | |
bafef0ae | 1444 | spin_unlock(&np->led_lock); |
1da177e4 LT |
1445 | |
1446 | length = myNextRxDesc->descr.hw_len - 4; | |
bafef0ae | 1447 | np->stats.rx_bytes += length; |
1da177e4 LT |
1448 | |
1449 | #ifdef ETHDEBUG | |
1450 | printk("Got a packet of length %d:\n", length); | |
1451 | /* dump the first bytes in the packet */ | |
1452 | skb_data_ptr = (unsigned char *)phys_to_virt(myNextRxDesc->descr.buf); | |
1453 | for (i = 0; i < 8; i++) { | |
1454 | printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i * 8, | |
1455 | skb_data_ptr[0],skb_data_ptr[1],skb_data_ptr[2],skb_data_ptr[3], | |
1456 | skb_data_ptr[4],skb_data_ptr[5],skb_data_ptr[6],skb_data_ptr[7]); | |
1457 | skb_data_ptr += 8; | |
1458 | } | |
1459 | #endif | |
1460 | ||
1461 | if (length < RX_COPYBREAK) { | |
1462 | /* Small packet, copy data */ | |
1463 | skb = dev_alloc_skb(length - ETHER_HEAD_LEN); | |
1464 | if (!skb) { | |
1465 | np->stats.rx_errors++; | |
1466 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); | |
bafef0ae | 1467 | goto update_nextrxdesc; |
1da177e4 LT |
1468 | } |
1469 | ||
1470 | skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */ | |
1471 | skb_data_ptr = skb_push(skb, ETHER_HEAD_LEN); /* allocate room for the header */ | |
1472 | ||
1473 | #ifdef ETHDEBUG | |
1474 | printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n", | |
4305b541 ACM |
1475 | skb->head, skb->data, skb_tail_pointer(skb), |
1476 | skb_end_pointer(skb)); | |
1da177e4 LT |
1477 | printk("copying packet to 0x%x.\n", skb_data_ptr); |
1478 | #endif | |
1479 | ||
1480 | memcpy(skb_data_ptr, phys_to_virt(myNextRxDesc->descr.buf), length); | |
1481 | } | |
1482 | else { | |
1483 | /* Large packet, send directly to upper layers and allocate new | |
1484 | * memory (aligned to cache line boundary to avoid bug). | |
bafef0ae JN |
1485 | * Before sending the skb to upper layers we must make sure |
1486 | * that skb->data points to the aligned start of the packet. | |
1da177e4 LT |
1487 | */ |
1488 | int align; | |
1489 | struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); | |
1490 | if (!new_skb) { | |
1491 | np->stats.rx_errors++; | |
1492 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); | |
bafef0ae | 1493 | goto update_nextrxdesc; |
1da177e4 LT |
1494 | } |
1495 | skb = myNextRxDesc->skb; | |
1496 | align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data; | |
1497 | skb_put(skb, length + align); | |
1498 | skb_pull(skb, align); /* Remove alignment bytes */ | |
1499 | myNextRxDesc->skb = new_skb; | |
1500 | myNextRxDesc->descr.buf = L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc->skb->data)); | |
1501 | } | |
1502 | ||
1da177e4 LT |
1503 | skb->protocol = eth_type_trans(skb, dev); |
1504 | ||
1505 | /* Send the packet to the upper layers */ | |
1506 | netif_rx(skb); | |
1507 | ||
bafef0ae | 1508 | update_nextrxdesc: |
1da177e4 LT |
1509 | /* Prepare for next packet */ |
1510 | myNextRxDesc->descr.status = 0; | |
bafef0ae | 1511 | prevRxDesc = myNextRxDesc; |
1da177e4 LT |
1512 | myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next); |
1513 | ||
1514 | rx_queue_len++; | |
1515 | ||
1516 | /* Check if descriptors should be returned */ | |
1517 | if (rx_queue_len == RX_QUEUE_THRESHOLD) { | |
1518 | flush_etrax_cache(); | |
bafef0ae | 1519 | prevRxDesc->descr.ctrl |= d_eol; |
1da177e4 | 1520 | myLastRxDesc->descr.ctrl &= ~d_eol; |
bafef0ae | 1521 | myLastRxDesc = prevRxDesc; |
1da177e4 LT |
1522 | rx_queue_len = 0; |
1523 | } | |
1524 | } | |
1525 | ||
1526 | /* The inverse routine to net_open(). */ | |
1527 | static int | |
1528 | e100_close(struct net_device *dev) | |
1529 | { | |
bafef0ae | 1530 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1531 | |
1532 | printk(KERN_INFO "Closing %s.\n", dev->name); | |
1533 | ||
1534 | netif_stop_queue(dev); | |
1535 | ||
1536 | *R_IRQ_MASK0_CLR = | |
1537 | IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | | |
1538 | IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | | |
1539 | IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); | |
1540 | ||
1541 | *R_IRQ_MASK2_CLR = | |
1542 | IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | | |
1543 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | | |
1544 | IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | | |
1545 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); | |
1546 | ||
1547 | /* Stop the receiver and the transmitter */ | |
1548 | ||
1549 | RESET_DMA(NETWORK_TX_DMA_NBR); | |
1550 | RESET_DMA(NETWORK_RX_DMA_NBR); | |
1551 | ||
1552 | /* Flush the Tx and disable Rx here. */ | |
1553 | ||
1554 | free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); | |
1555 | free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); | |
1556 | free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); | |
1557 | ||
bafef0ae JN |
1558 | cris_free_dma(NETWORK_TX_DMA_NBR, cardname); |
1559 | cris_free_dma(NETWORK_RX_DMA_NBR, cardname); | |
1560 | ||
1da177e4 LT |
1561 | /* Update the statistics here. */ |
1562 | ||
1563 | update_rx_stats(&np->stats); | |
1564 | update_tx_stats(&np->stats); | |
1565 | ||
1566 | /* Stop speed/duplex timers */ | |
1567 | del_timer(&speed_timer); | |
1568 | del_timer(&duplex_timer); | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | static int | |
1574 | e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
1575 | { | |
1576 | struct mii_ioctl_data *data = if_mii(ifr); | |
1577 | struct net_local *np = netdev_priv(dev); | |
bafef0ae JN |
1578 | int rc = 0; |
1579 | int old_autoneg; | |
1da177e4 LT |
1580 | |
1581 | spin_lock(&np->lock); /* Preempt protection */ | |
1582 | switch (cmd) { | |
1da177e4 LT |
1583 | /* The ioctls below should be considered obsolete but are */ |
1584 | /* still present for compatability with old scripts/apps */ | |
1585 | case SET_ETH_SPEED_10: /* 10 Mbps */ | |
1586 | e100_set_speed(dev, 10); | |
1587 | break; | |
1588 | case SET_ETH_SPEED_100: /* 100 Mbps */ | |
1589 | e100_set_speed(dev, 100); | |
1590 | break; | |
bafef0ae | 1591 | case SET_ETH_SPEED_AUTO: /* Auto-negotiate speed */ |
1da177e4 LT |
1592 | e100_set_speed(dev, 0); |
1593 | break; | |
bafef0ae | 1594 | case SET_ETH_DUPLEX_HALF: /* Half duplex */ |
1da177e4 LT |
1595 | e100_set_duplex(dev, half); |
1596 | break; | |
bafef0ae | 1597 | case SET_ETH_DUPLEX_FULL: /* Full duplex */ |
1da177e4 LT |
1598 | e100_set_duplex(dev, full); |
1599 | break; | |
bafef0ae | 1600 | case SET_ETH_DUPLEX_AUTO: /* Auto-negotiate duplex */ |
1da177e4 LT |
1601 | e100_set_duplex(dev, autoneg); |
1602 | break; | |
bafef0ae JN |
1603 | case SET_ETH_AUTONEG: |
1604 | old_autoneg = autoneg_normal; | |
1605 | autoneg_normal = *(int*)data; | |
1606 | if (autoneg_normal != old_autoneg) | |
1607 | e100_negotiate(dev); | |
1608 | break; | |
1da177e4 | 1609 | default: |
bafef0ae JN |
1610 | rc = generic_mii_ioctl(&np->mii_if, if_mii(ifr), |
1611 | cmd, NULL); | |
1612 | break; | |
1da177e4 LT |
1613 | } |
1614 | spin_unlock(&np->lock); | |
bafef0ae | 1615 | return rc; |
1da177e4 LT |
1616 | } |
1617 | ||
bafef0ae JN |
1618 | static int e100_get_settings(struct net_device *dev, |
1619 | struct ethtool_cmd *cmd) | |
1da177e4 | 1620 | { |
bafef0ae JN |
1621 | struct net_local *np = netdev_priv(dev); |
1622 | int err; | |
76f2b4d9 | 1623 | |
bafef0ae JN |
1624 | spin_lock_irq(&np->lock); |
1625 | err = mii_ethtool_gset(&np->mii_if, cmd); | |
1626 | spin_unlock_irq(&np->lock); | |
76f2b4d9 | 1627 | |
bafef0ae JN |
1628 | /* The PHY may support 1000baseT, but the Etrax100 does not. */ |
1629 | cmd->supported &= ~(SUPPORTED_1000baseT_Half | |
1630 | | SUPPORTED_1000baseT_Full); | |
1631 | return err; | |
76f2b4d9 CH |
1632 | } |
1633 | ||
1634 | static int e100_set_settings(struct net_device *dev, | |
1635 | struct ethtool_cmd *ecmd) | |
1636 | { | |
1637 | if (ecmd->autoneg == AUTONEG_ENABLE) { | |
1638 | e100_set_duplex(dev, autoneg); | |
1639 | e100_set_speed(dev, 0); | |
1640 | } else { | |
1641 | e100_set_duplex(dev, ecmd->duplex == DUPLEX_HALF ? half : full); | |
1642 | e100_set_speed(dev, ecmd->speed == SPEED_10 ? 10: 100); | |
1da177e4 | 1643 | } |
76f2b4d9 CH |
1644 | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | static void e100_get_drvinfo(struct net_device *dev, | |
1649 | struct ethtool_drvinfo *info) | |
1650 | { | |
1651 | strncpy(info->driver, "ETRAX 100LX", sizeof(info->driver) - 1); | |
1652 | strncpy(info->version, "$Revision: 1.31 $", sizeof(info->version) - 1); | |
1653 | strncpy(info->fw_version, "N/A", sizeof(info->fw_version) - 1); | |
1654 | strncpy(info->bus_info, "N/A", sizeof(info->bus_info) - 1); | |
1655 | } | |
1656 | ||
1657 | static int e100_nway_reset(struct net_device *dev) | |
1658 | { | |
1659 | if (current_duplex == autoneg && current_speed_selection == 0) | |
1660 | e100_negotiate(dev); | |
1da177e4 LT |
1661 | return 0; |
1662 | } | |
1663 | ||
7282d491 | 1664 | static const struct ethtool_ops e100_ethtool_ops = { |
76f2b4d9 CH |
1665 | .get_settings = e100_get_settings, |
1666 | .set_settings = e100_set_settings, | |
1667 | .get_drvinfo = e100_get_drvinfo, | |
1668 | .nway_reset = e100_nway_reset, | |
1669 | .get_link = ethtool_op_get_link, | |
1670 | }; | |
1671 | ||
1da177e4 LT |
1672 | static int |
1673 | e100_set_config(struct net_device *dev, struct ifmap *map) | |
1674 | { | |
bafef0ae JN |
1675 | struct net_local *np = netdev_priv(dev); |
1676 | ||
1da177e4 LT |
1677 | spin_lock(&np->lock); /* Preempt protection */ |
1678 | ||
1679 | switch(map->port) { | |
1680 | case IF_PORT_UNKNOWN: | |
1681 | /* Use autoneg */ | |
1682 | e100_set_speed(dev, 0); | |
1683 | e100_set_duplex(dev, autoneg); | |
1684 | break; | |
1685 | case IF_PORT_10BASET: | |
1686 | e100_set_speed(dev, 10); | |
1687 | e100_set_duplex(dev, autoneg); | |
1688 | break; | |
1689 | case IF_PORT_100BASET: | |
1690 | case IF_PORT_100BASETX: | |
1691 | e100_set_speed(dev, 100); | |
1692 | e100_set_duplex(dev, autoneg); | |
1693 | break; | |
1694 | case IF_PORT_100BASEFX: | |
1695 | case IF_PORT_10BASE2: | |
1696 | case IF_PORT_AUI: | |
1697 | spin_unlock(&np->lock); | |
1698 | return -EOPNOTSUPP; | |
1699 | break; | |
1700 | default: | |
1701 | printk(KERN_ERR "%s: Invalid media selected", dev->name); | |
1702 | spin_unlock(&np->lock); | |
1703 | return -EINVAL; | |
1704 | } | |
1705 | spin_unlock(&np->lock); | |
1706 | return 0; | |
1707 | } | |
1708 | ||
1709 | static void | |
1710 | update_rx_stats(struct net_device_stats *es) | |
1711 | { | |
1712 | unsigned long r = *R_REC_COUNTERS; | |
1713 | /* update stats relevant to reception errors */ | |
1714 | es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r); | |
1715 | es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r); | |
1716 | es->rx_frame_errors += IO_EXTRACT(R_REC_COUNTERS, alignment_error, r); | |
1717 | es->rx_length_errors += IO_EXTRACT(R_REC_COUNTERS, oversize, r); | |
1718 | } | |
1719 | ||
1720 | static void | |
1721 | update_tx_stats(struct net_device_stats *es) | |
1722 | { | |
1723 | unsigned long r = *R_TR_COUNTERS; | |
1724 | /* update stats relevant to transmission errors */ | |
1725 | es->collisions += | |
1726 | IO_EXTRACT(R_TR_COUNTERS, single_col, r) + | |
1727 | IO_EXTRACT(R_TR_COUNTERS, multiple_col, r); | |
1da177e4 LT |
1728 | } |
1729 | ||
1730 | /* | |
1731 | * Get the current statistics. | |
1732 | * This may be called with the card open or closed. | |
1733 | */ | |
1734 | static struct net_device_stats * | |
1735 | e100_get_stats(struct net_device *dev) | |
1736 | { | |
bafef0ae | 1737 | struct net_local *lp = netdev_priv(dev); |
1da177e4 | 1738 | unsigned long flags; |
bafef0ae | 1739 | |
1da177e4 LT |
1740 | spin_lock_irqsave(&lp->lock, flags); |
1741 | ||
1742 | update_rx_stats(&lp->stats); | |
1743 | update_tx_stats(&lp->stats); | |
1744 | ||
1745 | spin_unlock_irqrestore(&lp->lock, flags); | |
1746 | return &lp->stats; | |
1747 | } | |
1748 | ||
1749 | /* | |
1750 | * Set or clear the multicast filter for this adaptor. | |
1751 | * num_addrs == -1 Promiscuous mode, receive all packets | |
1752 | * num_addrs == 0 Normal mode, clear multicast list | |
1753 | * num_addrs > 0 Multicast mode, receive normal and MC packets, | |
1754 | * and do best-effort filtering. | |
1755 | */ | |
1756 | static void | |
1757 | set_multicast_list(struct net_device *dev) | |
1758 | { | |
bafef0ae | 1759 | struct net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1760 | int num_addr = dev->mc_count; |
1761 | unsigned long int lo_bits; | |
1762 | unsigned long int hi_bits; | |
bafef0ae | 1763 | |
1da177e4 | 1764 | spin_lock(&lp->lock); |
bafef0ae | 1765 | if (dev->flags & IFF_PROMISC) { |
1da177e4 LT |
1766 | /* promiscuous mode */ |
1767 | lo_bits = 0xfffffffful; | |
1768 | hi_bits = 0xfffffffful; | |
1769 | ||
1770 | /* Enable individual receive */ | |
1771 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, receive); | |
1772 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1773 | } else if (dev->flags & IFF_ALLMULTI) { | |
1774 | /* enable all multicasts */ | |
1775 | lo_bits = 0xfffffffful; | |
1776 | hi_bits = 0xfffffffful; | |
1777 | ||
1778 | /* Disable individual receive */ | |
1779 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); | |
1780 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1781 | } else if (num_addr == 0) { | |
1782 | /* Normal, clear the mc list */ | |
1783 | lo_bits = 0x00000000ul; | |
1784 | hi_bits = 0x00000000ul; | |
1785 | ||
1786 | /* Disable individual receive */ | |
1787 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); | |
1788 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1789 | } else { | |
1790 | /* MC mode, receive normal and MC packets */ | |
1791 | char hash_ix; | |
1792 | struct dev_mc_list *dmi = dev->mc_list; | |
1793 | int i; | |
1794 | char *baddr; | |
bafef0ae | 1795 | |
1da177e4 LT |
1796 | lo_bits = 0x00000000ul; |
1797 | hi_bits = 0x00000000ul; | |
bafef0ae | 1798 | for (i = 0; i < num_addr; i++) { |
1da177e4 LT |
1799 | /* Calculate the hash index for the GA registers */ |
1800 | ||
1801 | hash_ix = 0; | |
1802 | baddr = dmi->dmi_addr; | |
1803 | hash_ix ^= (*baddr) & 0x3f; | |
1804 | hash_ix ^= ((*baddr) >> 6) & 0x03; | |
1805 | ++baddr; | |
1806 | hash_ix ^= ((*baddr) << 2) & 0x03c; | |
1807 | hash_ix ^= ((*baddr) >> 4) & 0xf; | |
1808 | ++baddr; | |
1809 | hash_ix ^= ((*baddr) << 4) & 0x30; | |
1810 | hash_ix ^= ((*baddr) >> 2) & 0x3f; | |
1811 | ++baddr; | |
1812 | hash_ix ^= (*baddr) & 0x3f; | |
1813 | hash_ix ^= ((*baddr) >> 6) & 0x03; | |
1814 | ++baddr; | |
1815 | hash_ix ^= ((*baddr) << 2) & 0x03c; | |
1816 | hash_ix ^= ((*baddr) >> 4) & 0xf; | |
1817 | ++baddr; | |
1818 | hash_ix ^= ((*baddr) << 4) & 0x30; | |
1819 | hash_ix ^= ((*baddr) >> 2) & 0x3f; | |
1820 | ||
1821 | hash_ix &= 0x3f; | |
1822 | ||
1823 | if (hash_ix >= 32) { | |
1824 | hi_bits |= (1 << (hash_ix-32)); | |
bafef0ae | 1825 | } else { |
1da177e4 LT |
1826 | lo_bits |= (1 << hash_ix); |
1827 | } | |
1828 | dmi = dmi->next; | |
1829 | } | |
1830 | /* Disable individual receive */ | |
1831 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); | |
1832 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1833 | } | |
1834 | *R_NETWORK_GA_0 = lo_bits; | |
1835 | *R_NETWORK_GA_1 = hi_bits; | |
1836 | spin_unlock(&lp->lock); | |
1837 | } | |
1838 | ||
1839 | void | |
bafef0ae | 1840 | e100_hardware_send_packet(struct net_local *np, char *buf, int length) |
1da177e4 LT |
1841 | { |
1842 | D(printk("e100 send pack, buf 0x%x len %d\n", buf, length)); | |
1843 | ||
bafef0ae | 1844 | spin_lock(&np->led_lock); |
1da177e4 LT |
1845 | if (!led_active && time_after(jiffies, led_next_time)) { |
1846 | /* light the network leds depending on the current speed. */ | |
1847 | e100_set_network_leds(NETWORK_ACTIVITY); | |
1848 | ||
1849 | /* Set the earliest time we may clear the LED */ | |
1850 | led_next_time = jiffies + NET_FLASH_TIME; | |
1851 | led_active = 1; | |
1852 | mod_timer(&clear_led_timer, jiffies + HZ/10); | |
1853 | } | |
bafef0ae | 1854 | spin_unlock(&np->led_lock); |
1da177e4 LT |
1855 | |
1856 | /* configure the tx dma descriptor */ | |
1857 | myNextTxDesc->descr.sw_len = length; | |
1858 | myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait; | |
1859 | myNextTxDesc->descr.buf = virt_to_phys(buf); | |
1860 | ||
1861 | /* Move end of list */ | |
1862 | myLastTxDesc->descr.ctrl &= ~d_eol; | |
1863 | myLastTxDesc = myNextTxDesc; | |
1864 | ||
1865 | /* Restart DMA channel */ | |
1866 | *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart); | |
1867 | } | |
1868 | ||
1869 | static void | |
1870 | e100_clear_network_leds(unsigned long dummy) | |
1871 | { | |
bafef0ae JN |
1872 | struct net_device *dev = (struct net_device *)dummy; |
1873 | struct net_local *np = netdev_priv(dev); | |
1874 | ||
1875 | spin_lock(&np->led_lock); | |
1876 | ||
1da177e4 LT |
1877 | if (led_active && time_after(jiffies, led_next_time)) { |
1878 | e100_set_network_leds(NO_NETWORK_ACTIVITY); | |
1879 | ||
1880 | /* Set the earliest time we may set the LED */ | |
1881 | led_next_time = jiffies + NET_FLASH_PAUSE; | |
1882 | led_active = 0; | |
1883 | } | |
bafef0ae JN |
1884 | |
1885 | spin_unlock(&np->led_lock); | |
1da177e4 LT |
1886 | } |
1887 | ||
1888 | static void | |
1889 | e100_set_network_leds(int active) | |
1890 | { | |
1891 | #if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK) | |
1892 | int light_leds = (active == NO_NETWORK_ACTIVITY); | |
1893 | #elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY) | |
1894 | int light_leds = (active == NETWORK_ACTIVITY); | |
1895 | #else | |
1896 | #error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY" | |
1897 | #endif | |
1898 | ||
1899 | if (!current_speed) { | |
1900 | /* Make LED red, link is down */ | |
1901 | #if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION) | |
1902 | LED_NETWORK_SET(LED_RED); | |
1903 | #else | |
1904 | LED_NETWORK_SET(LED_OFF); | |
1905 | #endif | |
bafef0ae | 1906 | } else if (light_leds) { |
1da177e4 LT |
1907 | if (current_speed == 10) { |
1908 | LED_NETWORK_SET(LED_ORANGE); | |
1909 | } else { | |
1910 | LED_NETWORK_SET(LED_GREEN); | |
1911 | } | |
bafef0ae | 1912 | } else { |
1da177e4 LT |
1913 | LED_NETWORK_SET(LED_OFF); |
1914 | } | |
1915 | } | |
1916 | ||
bafef0ae JN |
1917 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1918 | static void | |
1919 | e100_netpoll(struct net_device* netdev) | |
1920 | { | |
1921 | e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev, NULL); | |
1922 | } | |
1923 | #endif | |
1924 | ||
1da177e4 LT |
1925 | static int |
1926 | etrax_init_module(void) | |
1927 | { | |
1928 | return etrax_ethernet_init(); | |
1929 | } | |
1930 | ||
1931 | static int __init | |
1932 | e100_boot_setup(char* str) | |
1933 | { | |
1934 | struct sockaddr sa = {0}; | |
1935 | int i; | |
1936 | ||
1937 | /* Parse the colon separated Ethernet station address */ | |
1938 | for (i = 0; i < ETH_ALEN; i++) { | |
1939 | unsigned int tmp; | |
1940 | if (sscanf(str + 3*i, "%2x", &tmp) != 1) { | |
1941 | printk(KERN_WARNING "Malformed station address"); | |
1942 | return 0; | |
1943 | } | |
1944 | sa.sa_data[i] = (char)tmp; | |
1945 | } | |
1946 | ||
1947 | default_mac = sa; | |
1948 | return 1; | |
1949 | } | |
1950 | ||
1951 | __setup("etrax100_eth=", e100_boot_setup); | |
1952 | ||
1953 | module_init(etrax_init_module); |