Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | #include <linux/module.h> |
| 223 | |
| 224 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
| 237 | |
| 238 | #include <linux/if.h> |
| 239 | #include <linux/mii.h> |
| 240 | #include <linux/netdevice.h> |
| 241 | #include <linux/etherdevice.h> |
| 242 | #include <linux/skbuff.h> |
| 243 | #include <linux/ethtool.h> |
| 244 | |
| 245 | #include <asm/arch/svinto.h>/* DMA and register descriptions */ |
| 246 | #include <asm/io.h> /* LED_* I/O functions */ |
| 247 | #include <asm/irq.h> |
| 248 | #include <asm/dma.h> |
| 249 | #include <asm/system.h> |
| 250 | #include <asm/bitops.h> |
| 251 | #include <asm/ethernet.h> |
| 252 | #include <asm/cache.h> |
| 253 | |
| 254 | //#define ETHDEBUG |
| 255 | #define D(x) |
| 256 | |
| 257 | /* |
| 258 | * The name of the card. Is used for messages and in the requests for |
| 259 | * io regions, irqs and dma channels |
| 260 | */ |
| 261 | |
| 262 | static const char* cardname = "ETRAX 100LX built-in ethernet controller"; |
| 263 | |
| 264 | /* A default ethernet address. Highlevel SW will set the real one later */ |
| 265 | |
| 266 | static struct sockaddr default_mac = { |
| 267 | 0, |
| 268 | { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 } |
| 269 | }; |
| 270 | |
| 271 | /* Information that need to be kept for each board. */ |
| 272 | struct net_local { |
| 273 | struct net_device_stats stats; |
| 274 | struct mii_if_info mii_if; |
| 275 | |
| 276 | /* Tx control lock. This protects the transmit buffer ring |
| 277 | * state along with the "tx full" state of the driver. This |
| 278 | * means all netif_queue flow control actions are protected |
| 279 | * by this lock as well. |
| 280 | */ |
| 281 | spinlock_t lock; |
| 282 | }; |
| 283 | |
| 284 | typedef struct etrax_eth_descr |
| 285 | { |
| 286 | etrax_dma_descr descr; |
| 287 | struct sk_buff* skb; |
| 288 | } etrax_eth_descr; |
| 289 | |
| 290 | /* Some transceivers requires special handling */ |
| 291 | struct transceiver_ops |
| 292 | { |
| 293 | unsigned int oui; |
| 294 | void (*check_speed)(struct net_device* dev); |
| 295 | void (*check_duplex)(struct net_device* dev); |
| 296 | }; |
| 297 | |
| 298 | struct transceiver_ops* transceiver; |
| 299 | |
| 300 | /* Duplex settings */ |
| 301 | enum duplex |
| 302 | { |
| 303 | half, |
| 304 | full, |
| 305 | autoneg |
| 306 | }; |
| 307 | |
| 308 | /* Dma descriptors etc. */ |
| 309 | |
| 310 | #define MAX_MEDIA_DATA_SIZE 1518 |
| 311 | |
| 312 | #define MIN_PACKET_LEN 46 |
| 313 | #define ETHER_HEAD_LEN 14 |
| 314 | |
| 315 | /* |
| 316 | ** MDIO constants. |
| 317 | */ |
| 318 | #define MDIO_START 0x1 |
| 319 | #define MDIO_READ 0x2 |
| 320 | #define MDIO_WRITE 0x1 |
| 321 | #define MDIO_PREAMBLE 0xfffffffful |
| 322 | |
| 323 | /* Broadcom specific */ |
| 324 | #define MDIO_AUX_CTRL_STATUS_REG 0x18 |
| 325 | #define MDIO_BC_FULL_DUPLEX_IND 0x1 |
| 326 | #define MDIO_BC_SPEED 0x2 |
| 327 | |
| 328 | /* TDK specific */ |
| 329 | #define MDIO_TDK_DIAGNOSTIC_REG 18 |
| 330 | #define MDIO_TDK_DIAGNOSTIC_RATE 0x400 |
| 331 | #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 |
| 332 | |
| 333 | /*Intel LXT972A specific*/ |
| 334 | #define MDIO_INT_STATUS_REG_2 0x0011 |
| 335 | #define MDIO_INT_FULL_DUPLEX_IND ( 1 << 9 ) |
| 336 | #define MDIO_INT_SPEED ( 1 << 14 ) |
| 337 | |
| 338 | /* Network flash constants */ |
| 339 | #define NET_FLASH_TIME (HZ/50) /* 20 ms */ |
| 340 | #define NET_FLASH_PAUSE (HZ/100) /* 10 ms */ |
| 341 | #define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */ |
| 342 | #define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */ |
| 343 | |
| 344 | #define NO_NETWORK_ACTIVITY 0 |
| 345 | #define NETWORK_ACTIVITY 1 |
| 346 | |
| 347 | #define NBR_OF_RX_DESC 64 |
| 348 | #define NBR_OF_TX_DESC 256 |
| 349 | |
| 350 | /* Large packets are sent directly to upper layers while small packets are */ |
| 351 | /* copied (to reduce memory waste). The following constant decides the breakpoint */ |
| 352 | #define RX_COPYBREAK 256 |
| 353 | |
| 354 | /* Due to a chip bug we need to flush the cache when descriptors are returned */ |
| 355 | /* to the DMA. To decrease performance impact we return descriptors in chunks. */ |
| 356 | /* The following constant determines the number of descriptors to return. */ |
| 357 | #define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2 |
| 358 | |
| 359 | #define GET_BIT(bit,val) (((val) >> (bit)) & 0x01) |
| 360 | |
| 361 | /* Define some macros to access ETRAX 100 registers */ |
| 362 | #define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ |
| 363 | IO_FIELD_(reg##_, field##_, val) |
| 364 | #define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ |
| 365 | IO_STATE_(reg##_, field##_, _##val) |
| 366 | |
| 367 | static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to |
| 368 | to be processed */ |
| 369 | static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */ |
| 370 | static etrax_eth_descr *myPrevRxDesc; /* The descriptor right before myNextRxDesc */ |
| 371 | |
| 372 | static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32))); |
| 373 | |
| 374 | static etrax_eth_descr* myFirstTxDesc; /* First packet not yet sent */ |
| 375 | static etrax_eth_descr* myLastTxDesc; /* End of send queue */ |
| 376 | static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */ |
| 377 | static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32))); |
| 378 | |
| 379 | static unsigned int network_rec_config_shadow = 0; |
| 380 | static unsigned int mdio_phy_addr; /* Transciever address */ |
| 381 | |
| 382 | static unsigned int network_tr_ctrl_shadow = 0; |
| 383 | |
| 384 | /* Network speed indication. */ |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 385 | static DEFINE_TIMER(speed_timer, NULL, 0, 0); |
| 386 | static DEFINE_TIMER(clear_led_timer, NULL, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 394 | static DEFINE_TIMER(duplex_timer, NULL, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 405 | static irqreturn_t e100rxtx_interrupt(int irq, void *dev_id); |
| 406 | static irqreturn_t e100nw_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
| 414 | static void e100_hardware_send_packet(char *buf, int length); |
| 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 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 436 | static const struct ethtool_ops e100_ethtool_ops; |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | static void broadcom_check_speed(struct net_device* dev); |
| 439 | static void broadcom_check_duplex(struct net_device* dev); |
| 440 | static void tdk_check_speed(struct net_device* dev); |
| 441 | static void tdk_check_duplex(struct net_device* dev); |
| 442 | static void intel_check_speed(struct net_device* dev); |
| 443 | static void intel_check_duplex(struct net_device* dev); |
| 444 | static void generic_check_speed(struct net_device* dev); |
| 445 | static void generic_check_duplex(struct net_device* dev); |
| 446 | |
| 447 | struct transceiver_ops transceivers[] = |
| 448 | { |
| 449 | {0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */ |
| 450 | {0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */ |
| 451 | {0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */ |
| 452 | {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ |
| 453 | {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ |
| 454 | }; |
| 455 | |
| 456 | #define tx_done(dev) (*R_DMA_CH0_CMD == 0) |
| 457 | |
| 458 | /* |
| 459 | * Check for a network adaptor of this type, and return '0' if one exists. |
| 460 | * If dev->base_addr == 0, probe all likely locations. |
| 461 | * If dev->base_addr == 1, always return failure. |
| 462 | * If dev->base_addr == 2, allocate space for the device and return success |
| 463 | * (detachable devices only). |
| 464 | */ |
| 465 | |
| 466 | static int __init |
| 467 | etrax_ethernet_init(void) |
| 468 | { |
| 469 | struct net_device *dev; |
| 470 | struct net_local* np; |
| 471 | int i, err; |
| 472 | |
| 473 | printk(KERN_INFO |
| 474 | "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000-2003 Axis Communications AB\n"); |
| 475 | |
| 476 | dev = alloc_etherdev(sizeof(struct net_local)); |
| 477 | np = dev->priv; |
| 478 | |
| 479 | if (!dev) |
| 480 | return -ENOMEM; |
| 481 | |
| 482 | dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ |
| 483 | |
| 484 | /* now setup our etrax specific stuff */ |
| 485 | |
| 486 | dev->irq = NETWORK_DMA_RX_IRQ_NBR; /* we really use DMATX as well... */ |
| 487 | dev->dma = NETWORK_RX_DMA_NBR; |
| 488 | |
| 489 | /* fill in our handlers so the network layer can talk to us in the future */ |
| 490 | |
| 491 | dev->open = e100_open; |
| 492 | dev->hard_start_xmit = e100_send_packet; |
| 493 | dev->stop = e100_close; |
| 494 | dev->get_stats = e100_get_stats; |
| 495 | dev->set_multicast_list = set_multicast_list; |
| 496 | dev->set_mac_address = e100_set_mac_address; |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 497 | dev->ethtool_ops = &e100_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | dev->do_ioctl = e100_ioctl; |
| 499 | dev->set_config = e100_set_config; |
| 500 | dev->tx_timeout = e100_tx_timeout; |
| 501 | |
| 502 | /* Initialise the list of Etrax DMA-descriptors */ |
| 503 | |
| 504 | /* Initialise receive descriptors */ |
| 505 | |
| 506 | for (i = 0; i < NBR_OF_RX_DESC; i++) { |
| 507 | /* Allocate two extra cachelines to make sure that buffer used by DMA |
| 508 | * does not share cacheline with any other data (to avoid cache bug) |
| 509 | */ |
| 510 | RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); |
David Rientjes | 92b1f90 | 2006-11-08 19:49:15 -0800 | [diff] [blame] | 511 | if (!RxDescList[i].skb) |
| 512 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | RxDescList[i].descr.ctrl = 0; |
| 514 | RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE; |
| 515 | RxDescList[i].descr.next = virt_to_phys(&RxDescList[i + 1]); |
| 516 | RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data)); |
| 517 | RxDescList[i].descr.status = 0; |
| 518 | RxDescList[i].descr.hw_len = 0; |
| 519 | prepare_rx_descriptor(&RxDescList[i].descr); |
| 520 | } |
| 521 | |
| 522 | RxDescList[NBR_OF_RX_DESC - 1].descr.ctrl = d_eol; |
| 523 | RxDescList[NBR_OF_RX_DESC - 1].descr.next = virt_to_phys(&RxDescList[0]); |
| 524 | rx_queue_len = 0; |
| 525 | |
| 526 | /* Initialize transmit descriptors */ |
| 527 | for (i = 0; i < NBR_OF_TX_DESC; i++) { |
| 528 | TxDescList[i].descr.ctrl = 0; |
| 529 | TxDescList[i].descr.sw_len = 0; |
| 530 | TxDescList[i].descr.next = virt_to_phys(&TxDescList[i + 1].descr); |
| 531 | TxDescList[i].descr.buf = 0; |
| 532 | TxDescList[i].descr.status = 0; |
| 533 | TxDescList[i].descr.hw_len = 0; |
| 534 | TxDescList[i].skb = 0; |
| 535 | } |
| 536 | |
| 537 | TxDescList[NBR_OF_TX_DESC - 1].descr.ctrl = d_eol; |
| 538 | TxDescList[NBR_OF_TX_DESC - 1].descr.next = virt_to_phys(&TxDescList[0].descr); |
| 539 | |
| 540 | /* Initialise initial pointers */ |
| 541 | |
| 542 | myNextRxDesc = &RxDescList[0]; |
| 543 | myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; |
| 544 | myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; |
| 545 | myFirstTxDesc = &TxDescList[0]; |
| 546 | myNextTxDesc = &TxDescList[0]; |
| 547 | myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1]; |
| 548 | |
| 549 | /* Register device */ |
| 550 | err = register_netdev(dev); |
| 551 | if (err) { |
| 552 | free_netdev(dev); |
| 553 | return err; |
| 554 | } |
| 555 | |
| 556 | /* set the default MAC address */ |
| 557 | |
| 558 | e100_set_mac_address(dev, &default_mac); |
| 559 | |
| 560 | /* Initialize speed indicator stuff. */ |
| 561 | |
| 562 | current_speed = 10; |
| 563 | current_speed_selection = 0; /* Auto */ |
| 564 | speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; |
| 565 | duplex_timer.data = (unsigned long)dev; |
| 566 | speed_timer.function = e100_check_speed; |
| 567 | |
| 568 | clear_led_timer.function = e100_clear_network_leds; |
| 569 | |
| 570 | full_duplex = 0; |
| 571 | current_duplex = autoneg; |
| 572 | duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; |
| 573 | duplex_timer.data = (unsigned long)dev; |
| 574 | duplex_timer.function = e100_check_duplex; |
| 575 | |
| 576 | /* Initialize mii interface */ |
| 577 | np->mii_if.phy_id = mdio_phy_addr; |
| 578 | np->mii_if.phy_id_mask = 0x1f; |
| 579 | np->mii_if.reg_num_mask = 0x1f; |
| 580 | np->mii_if.dev = dev; |
| 581 | np->mii_if.mdio_read = e100_get_mdio_reg; |
| 582 | np->mii_if.mdio_write = e100_set_mdio_reg; |
| 583 | |
| 584 | /* Initialize group address registers to make sure that no */ |
| 585 | /* unwanted addresses are matched */ |
| 586 | *R_NETWORK_GA_0 = 0x00000000; |
| 587 | *R_NETWORK_GA_1 = 0x00000000; |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | /* set MAC address of the interface. called from the core after a |
| 592 | * SIOCSIFADDR ioctl, and from the bootup above. |
| 593 | */ |
| 594 | |
| 595 | static int |
| 596 | e100_set_mac_address(struct net_device *dev, void *p) |
| 597 | { |
| 598 | struct net_local *np = (struct net_local *)dev->priv; |
| 599 | struct sockaddr *addr = p; |
| 600 | int i; |
| 601 | |
| 602 | spin_lock(&np->lock); /* preemption protection */ |
| 603 | |
| 604 | /* remember it */ |
| 605 | |
| 606 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
| 607 | |
| 608 | /* Write it to the hardware. |
| 609 | * Note the way the address is wrapped: |
| 610 | * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24); |
| 611 | * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8); |
| 612 | */ |
| 613 | |
| 614 | *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | |
| 615 | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); |
| 616 | *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); |
| 617 | *R_NETWORK_SA_2 = 0; |
| 618 | |
| 619 | /* show it in the log as well */ |
| 620 | |
| 621 | printk(KERN_INFO "%s: changed MAC to ", dev->name); |
| 622 | |
| 623 | for (i = 0; i < 5; i++) |
| 624 | printk("%02X:", dev->dev_addr[i]); |
| 625 | |
| 626 | printk("%02X\n", dev->dev_addr[i]); |
| 627 | |
| 628 | spin_unlock(&np->lock); |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * Open/initialize the board. This is called (in the current kernel) |
| 635 | * sometime after booting when the 'ifconfig' program is run. |
| 636 | * |
| 637 | * This routine should set everything up anew at each open, even |
| 638 | * registers that "should" only need to be set once at boot, so that |
| 639 | * there is non-reboot way to recover if something goes wrong. |
| 640 | */ |
| 641 | |
| 642 | static int |
| 643 | e100_open(struct net_device *dev) |
| 644 | { |
| 645 | unsigned long flags; |
| 646 | |
| 647 | /* enable the MDIO output pin */ |
| 648 | |
| 649 | *R_NETWORK_MGM_CTRL = IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable); |
| 650 | |
| 651 | *R_IRQ_MASK0_CLR = |
| 652 | IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | |
| 653 | IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | |
| 654 | IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); |
| 655 | |
| 656 | /* clear dma0 and 1 eop and descr irq masks */ |
| 657 | *R_IRQ_MASK2_CLR = |
| 658 | IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | |
| 659 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | |
| 660 | IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | |
| 661 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); |
| 662 | |
| 663 | /* Reset and wait for the DMA channels */ |
| 664 | |
| 665 | RESET_DMA(NETWORK_TX_DMA_NBR); |
| 666 | RESET_DMA(NETWORK_RX_DMA_NBR); |
| 667 | WAIT_DMA(NETWORK_TX_DMA_NBR); |
| 668 | WAIT_DMA(NETWORK_RX_DMA_NBR); |
| 669 | |
| 670 | /* Initialise the etrax network controller */ |
| 671 | |
| 672 | /* allocate the irq corresponding to the receiving DMA */ |
| 673 | |
| 674 | if (request_irq(NETWORK_DMA_RX_IRQ_NBR, e100rxtx_interrupt, |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 675 | IRQF_SAMPLE_RANDOM, cardname, (void *)dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | goto grace_exit0; |
| 677 | } |
| 678 | |
| 679 | /* allocate the irq corresponding to the transmitting DMA */ |
| 680 | |
| 681 | if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_interrupt, 0, |
| 682 | cardname, (void *)dev)) { |
| 683 | goto grace_exit1; |
| 684 | } |
| 685 | |
| 686 | /* allocate the irq corresponding to the network errors etc */ |
| 687 | |
| 688 | if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0, |
| 689 | cardname, (void *)dev)) { |
| 690 | goto grace_exit2; |
| 691 | } |
| 692 | |
| 693 | /* give the HW an idea of what MAC address we want */ |
| 694 | |
| 695 | *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | |
| 696 | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); |
| 697 | *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); |
| 698 | *R_NETWORK_SA_2 = 0; |
| 699 | |
| 700 | #if 0 |
| 701 | /* use promiscuous mode for testing */ |
| 702 | *R_NETWORK_GA_0 = 0xffffffff; |
| 703 | *R_NETWORK_GA_1 = 0xffffffff; |
| 704 | |
| 705 | *R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */ |
| 706 | #else |
| 707 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive); |
| 708 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable); |
| 709 | SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); |
| 710 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; |
| 711 | #endif |
| 712 | |
| 713 | *R_NETWORK_GEN_CONFIG = |
| 714 | IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) | |
| 715 | IO_STATE(R_NETWORK_GEN_CONFIG, enable, on); |
| 716 | |
| 717 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); |
| 718 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, delay, none); |
| 719 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cancel, dont); |
| 720 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cd, enable); |
| 721 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, retry, enable); |
| 722 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, pad, enable); |
| 723 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable); |
| 724 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; |
| 725 | |
| 726 | save_flags(flags); |
| 727 | cli(); |
| 728 | |
| 729 | /* enable the irq's for ethernet DMA */ |
| 730 | |
| 731 | *R_IRQ_MASK2_SET = |
| 732 | IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | |
| 733 | IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); |
| 734 | |
| 735 | *R_IRQ_MASK0_SET = |
| 736 | IO_STATE(R_IRQ_MASK0_SET, overrun, set) | |
| 737 | IO_STATE(R_IRQ_MASK0_SET, underrun, set) | |
| 738 | IO_STATE(R_IRQ_MASK0_SET, excessive_col, set); |
| 739 | |
| 740 | /* make sure the irqs are cleared */ |
| 741 | |
| 742 | *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); |
| 743 | *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); |
| 744 | |
| 745 | /* make sure the rec and transmit error counters are cleared */ |
| 746 | |
| 747 | (void)*R_REC_COUNTERS; /* dummy read */ |
| 748 | (void)*R_TR_COUNTERS; /* dummy read */ |
| 749 | |
| 750 | /* start the receiving DMA channel so we can receive packets from now on */ |
| 751 | |
| 752 | *R_DMA_CH1_FIRST = virt_to_phys(myNextRxDesc); |
| 753 | *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start); |
| 754 | |
| 755 | /* Set up transmit DMA channel so it can be restarted later */ |
| 756 | |
| 757 | *R_DMA_CH0_FIRST = 0; |
| 758 | *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); |
| 759 | |
| 760 | restore_flags(flags); |
| 761 | |
| 762 | /* Probe for transceiver */ |
| 763 | if (e100_probe_transceiver(dev)) |
| 764 | goto grace_exit3; |
| 765 | |
| 766 | /* Start duplex/speed timers */ |
| 767 | add_timer(&speed_timer); |
| 768 | add_timer(&duplex_timer); |
| 769 | |
| 770 | /* We are now ready to accept transmit requeusts from |
| 771 | * the queueing layer of the networking. |
| 772 | */ |
| 773 | netif_start_queue(dev); |
| 774 | |
| 775 | return 0; |
| 776 | |
| 777 | grace_exit3: |
| 778 | free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); |
| 779 | grace_exit2: |
| 780 | free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); |
| 781 | grace_exit1: |
| 782 | free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); |
| 783 | grace_exit0: |
| 784 | return -EAGAIN; |
| 785 | } |
| 786 | |
| 787 | |
| 788 | static void |
| 789 | generic_check_speed(struct net_device* dev) |
| 790 | { |
| 791 | unsigned long data; |
| 792 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE); |
| 793 | if ((data & ADVERTISE_100FULL) || |
| 794 | (data & ADVERTISE_100HALF)) |
| 795 | current_speed = 100; |
| 796 | else |
| 797 | current_speed = 10; |
| 798 | } |
| 799 | |
| 800 | static void |
| 801 | tdk_check_speed(struct net_device* dev) |
| 802 | { |
| 803 | unsigned long data; |
| 804 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG); |
| 805 | current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); |
| 806 | } |
| 807 | |
| 808 | static void |
| 809 | broadcom_check_speed(struct net_device* dev) |
| 810 | { |
| 811 | unsigned long data; |
| 812 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG); |
| 813 | current_speed = (data & MDIO_BC_SPEED ? 100 : 10); |
| 814 | } |
| 815 | |
| 816 | static void |
| 817 | intel_check_speed(struct net_device* dev) |
| 818 | { |
| 819 | unsigned long data; |
| 820 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2); |
| 821 | current_speed = (data & MDIO_INT_SPEED ? 100 : 10); |
| 822 | } |
| 823 | |
| 824 | static void |
| 825 | e100_check_speed(unsigned long priv) |
| 826 | { |
| 827 | struct net_device* dev = (struct net_device*)priv; |
| 828 | static int led_initiated = 0; |
| 829 | unsigned long data; |
| 830 | int old_speed = current_speed; |
| 831 | |
| 832 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR); |
| 833 | if (!(data & BMSR_LSTATUS)) { |
| 834 | current_speed = 0; |
| 835 | } else { |
| 836 | transceiver->check_speed(dev); |
| 837 | } |
| 838 | |
| 839 | if ((old_speed != current_speed) || !led_initiated) { |
| 840 | led_initiated = 1; |
| 841 | e100_set_network_leds(NO_NETWORK_ACTIVITY); |
| 842 | } |
| 843 | |
| 844 | /* Reinitialize the timer. */ |
| 845 | speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; |
| 846 | add_timer(&speed_timer); |
| 847 | } |
| 848 | |
| 849 | static void |
| 850 | e100_negotiate(struct net_device* dev) |
| 851 | { |
| 852 | unsigned short data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE); |
| 853 | |
| 854 | /* Discard old speed and duplex settings */ |
| 855 | data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL | |
| 856 | ADVERTISE_10HALF | ADVERTISE_10FULL); |
| 857 | |
| 858 | switch (current_speed_selection) { |
| 859 | case 10 : |
| 860 | if (current_duplex == full) |
| 861 | data |= ADVERTISE_10FULL; |
| 862 | else if (current_duplex == half) |
| 863 | data |= ADVERTISE_10HALF; |
| 864 | else |
| 865 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL; |
| 866 | break; |
| 867 | |
| 868 | case 100 : |
| 869 | if (current_duplex == full) |
| 870 | data |= ADVERTISE_100FULL; |
| 871 | else if (current_duplex == half) |
| 872 | data |= ADVERTISE_100HALF; |
| 873 | else |
| 874 | data |= ADVERTISE_100HALF | ADVERTISE_100FULL; |
| 875 | break; |
| 876 | |
| 877 | case 0 : /* Auto */ |
| 878 | if (current_duplex == full) |
| 879 | data |= ADVERTISE_100FULL | ADVERTISE_10FULL; |
| 880 | else if (current_duplex == half) |
| 881 | data |= ADVERTISE_100HALF | ADVERTISE_10HALF; |
| 882 | else |
| 883 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL | |
| 884 | ADVERTISE_100HALF | ADVERTISE_100FULL; |
| 885 | break; |
| 886 | |
| 887 | default : /* assume autoneg speed and duplex */ |
| 888 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL | |
| 889 | ADVERTISE_100HALF | ADVERTISE_100FULL; |
| 890 | } |
| 891 | |
| 892 | e100_set_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE, data); |
| 893 | |
| 894 | /* Renegotiate with link partner */ |
| 895 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR); |
| 896 | data |= BMCR_ANENABLE | BMCR_ANRESTART; |
| 897 | |
| 898 | e100_set_mdio_reg(dev, mdio_phy_addr, MII_BMCR, data); |
| 899 | } |
| 900 | |
| 901 | static void |
| 902 | e100_set_speed(struct net_device* dev, unsigned long speed) |
| 903 | { |
| 904 | if (speed != current_speed_selection) { |
| 905 | current_speed_selection = speed; |
| 906 | e100_negotiate(dev); |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | static void |
| 911 | e100_check_duplex(unsigned long priv) |
| 912 | { |
| 913 | struct net_device *dev = (struct net_device *)priv; |
| 914 | struct net_local *np = (struct net_local *)dev->priv; |
| 915 | int old_duplex = full_duplex; |
| 916 | transceiver->check_duplex(dev); |
| 917 | if (old_duplex != full_duplex) { |
| 918 | /* Duplex changed */ |
| 919 | SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); |
| 920 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; |
| 921 | } |
| 922 | |
| 923 | /* Reinitialize the timer. */ |
| 924 | duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; |
| 925 | add_timer(&duplex_timer); |
| 926 | np->mii_if.full_duplex = full_duplex; |
| 927 | } |
| 928 | |
| 929 | static void |
| 930 | generic_check_duplex(struct net_device* dev) |
| 931 | { |
| 932 | unsigned long data; |
| 933 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE); |
| 934 | if ((data & ADVERTISE_10FULL) || |
| 935 | (data & ADVERTISE_100FULL)) |
| 936 | full_duplex = 1; |
| 937 | else |
| 938 | full_duplex = 0; |
| 939 | } |
| 940 | |
| 941 | static void |
| 942 | tdk_check_duplex(struct net_device* dev) |
| 943 | { |
| 944 | unsigned long data; |
| 945 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG); |
| 946 | full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; |
| 947 | } |
| 948 | |
| 949 | static void |
| 950 | broadcom_check_duplex(struct net_device* dev) |
| 951 | { |
| 952 | unsigned long data; |
| 953 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG); |
| 954 | full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; |
| 955 | } |
| 956 | |
| 957 | static void |
| 958 | intel_check_duplex(struct net_device* dev) |
| 959 | { |
| 960 | unsigned long data; |
| 961 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2); |
| 962 | full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; |
| 963 | } |
| 964 | |
| 965 | static void |
| 966 | e100_set_duplex(struct net_device* dev, enum duplex new_duplex) |
| 967 | { |
| 968 | if (new_duplex != current_duplex) { |
| 969 | current_duplex = new_duplex; |
| 970 | e100_negotiate(dev); |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | static int |
| 975 | e100_probe_transceiver(struct net_device* dev) |
| 976 | { |
| 977 | unsigned int phyid_high; |
| 978 | unsigned int phyid_low; |
| 979 | unsigned int oui; |
| 980 | struct transceiver_ops* ops = NULL; |
| 981 | |
| 982 | /* Probe MDIO physical address */ |
| 983 | for (mdio_phy_addr = 0; mdio_phy_addr <= 31; mdio_phy_addr++) { |
| 984 | if (e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR) != 0xffff) |
| 985 | break; |
| 986 | } |
| 987 | if (mdio_phy_addr == 32) |
| 988 | return -ENODEV; |
| 989 | |
| 990 | /* Get manufacturer */ |
| 991 | phyid_high = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID1); |
| 992 | phyid_low = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID2); |
| 993 | oui = (phyid_high << 6) | (phyid_low >> 10); |
| 994 | |
| 995 | for (ops = &transceivers[0]; ops->oui; ops++) { |
| 996 | if (ops->oui == oui) |
| 997 | break; |
| 998 | } |
| 999 | transceiver = ops; |
| 1000 | |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | static int |
| 1005 | e100_get_mdio_reg(struct net_device *dev, int phy_id, int location) |
| 1006 | { |
| 1007 | unsigned short cmd; /* Data to be sent on MDIO port */ |
| 1008 | int data; /* Data read from MDIO */ |
| 1009 | int bitCounter; |
| 1010 | |
| 1011 | /* Start of frame, OP Code, Physical Address, Register Address */ |
| 1012 | cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (phy_id << 7) | |
| 1013 | (location << 2); |
| 1014 | |
| 1015 | e100_send_mdio_cmd(cmd, 0); |
| 1016 | |
| 1017 | data = 0; |
| 1018 | |
| 1019 | /* Data... */ |
| 1020 | for (bitCounter=15; bitCounter>=0 ; bitCounter--) { |
| 1021 | data |= (e100_receive_mdio_bit() << bitCounter); |
| 1022 | } |
| 1023 | |
| 1024 | return data; |
| 1025 | } |
| 1026 | |
| 1027 | static void |
| 1028 | e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value) |
| 1029 | { |
| 1030 | int bitCounter; |
| 1031 | unsigned short cmd; |
| 1032 | |
| 1033 | cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (phy_id << 7) | |
| 1034 | (location << 2); |
| 1035 | |
| 1036 | e100_send_mdio_cmd(cmd, 1); |
| 1037 | |
| 1038 | /* Data... */ |
| 1039 | for (bitCounter=15; bitCounter>=0 ; bitCounter--) { |
| 1040 | e100_send_mdio_bit(GET_BIT(bitCounter, value)); |
| 1041 | } |
| 1042 | |
| 1043 | } |
| 1044 | |
| 1045 | static void |
| 1046 | e100_send_mdio_cmd(unsigned short cmd, int write_cmd) |
| 1047 | { |
| 1048 | int bitCounter; |
| 1049 | unsigned char data = 0x2; |
| 1050 | |
| 1051 | /* Preamble */ |
| 1052 | for (bitCounter = 31; bitCounter>= 0; bitCounter--) |
| 1053 | e100_send_mdio_bit(GET_BIT(bitCounter, MDIO_PREAMBLE)); |
| 1054 | |
| 1055 | for (bitCounter = 15; bitCounter >= 2; bitCounter--) |
| 1056 | e100_send_mdio_bit(GET_BIT(bitCounter, cmd)); |
| 1057 | |
| 1058 | /* Turnaround */ |
| 1059 | for (bitCounter = 1; bitCounter >= 0 ; bitCounter--) |
| 1060 | if (write_cmd) |
| 1061 | e100_send_mdio_bit(GET_BIT(bitCounter, data)); |
| 1062 | else |
| 1063 | e100_receive_mdio_bit(); |
| 1064 | } |
| 1065 | |
| 1066 | static void |
| 1067 | e100_send_mdio_bit(unsigned char bit) |
| 1068 | { |
| 1069 | *R_NETWORK_MGM_CTRL = |
| 1070 | IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | |
| 1071 | IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); |
| 1072 | udelay(1); |
| 1073 | *R_NETWORK_MGM_CTRL = |
| 1074 | IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | |
| 1075 | IO_MASK(R_NETWORK_MGM_CTRL, mdck) | |
| 1076 | IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); |
| 1077 | udelay(1); |
| 1078 | } |
| 1079 | |
| 1080 | static unsigned char |
| 1081 | e100_receive_mdio_bit() |
| 1082 | { |
| 1083 | unsigned char bit; |
| 1084 | *R_NETWORK_MGM_CTRL = 0; |
| 1085 | bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT); |
| 1086 | udelay(1); |
| 1087 | *R_NETWORK_MGM_CTRL = IO_MASK(R_NETWORK_MGM_CTRL, mdck); |
| 1088 | udelay(1); |
| 1089 | return bit; |
| 1090 | } |
| 1091 | |
| 1092 | static void |
| 1093 | e100_reset_transceiver(struct net_device* dev) |
| 1094 | { |
| 1095 | unsigned short cmd; |
| 1096 | unsigned short data; |
| 1097 | int bitCounter; |
| 1098 | |
| 1099 | data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR); |
| 1100 | |
| 1101 | cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (mdio_phy_addr << 7) | (MII_BMCR << 2); |
| 1102 | |
| 1103 | e100_send_mdio_cmd(cmd, 1); |
| 1104 | |
| 1105 | data |= 0x8000; |
| 1106 | |
| 1107 | for (bitCounter = 15; bitCounter >= 0 ; bitCounter--) { |
| 1108 | e100_send_mdio_bit(GET_BIT(bitCounter, data)); |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | /* Called by upper layers if they decide it took too long to complete |
| 1113 | * sending a packet - we need to reset and stuff. |
| 1114 | */ |
| 1115 | |
| 1116 | static void |
| 1117 | e100_tx_timeout(struct net_device *dev) |
| 1118 | { |
| 1119 | struct net_local *np = (struct net_local *)dev->priv; |
| 1120 | unsigned long flags; |
| 1121 | |
| 1122 | spin_lock_irqsave(&np->lock, flags); |
| 1123 | |
| 1124 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, |
| 1125 | tx_done(dev) ? "IRQ problem" : "network cable problem"); |
| 1126 | |
| 1127 | /* remember we got an error */ |
| 1128 | |
| 1129 | np->stats.tx_errors++; |
| 1130 | |
| 1131 | /* reset the TX DMA in case it has hung on something */ |
| 1132 | |
| 1133 | RESET_DMA(NETWORK_TX_DMA_NBR); |
| 1134 | WAIT_DMA(NETWORK_TX_DMA_NBR); |
| 1135 | |
| 1136 | /* Reset the transceiver. */ |
| 1137 | |
| 1138 | e100_reset_transceiver(dev); |
| 1139 | |
| 1140 | /* and get rid of the packets that never got an interrupt */ |
| 1141 | while (myFirstTxDesc != myNextTxDesc) |
| 1142 | { |
| 1143 | dev_kfree_skb(myFirstTxDesc->skb); |
| 1144 | myFirstTxDesc->skb = 0; |
| 1145 | myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); |
| 1146 | } |
| 1147 | |
| 1148 | /* Set up transmit DMA channel so it can be restarted later */ |
| 1149 | *R_DMA_CH0_FIRST = 0; |
| 1150 | *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); |
| 1151 | |
| 1152 | /* tell the upper layers we're ok again */ |
| 1153 | |
| 1154 | netif_wake_queue(dev); |
| 1155 | spin_unlock_irqrestore(&np->lock, flags); |
| 1156 | } |
| 1157 | |
| 1158 | |
| 1159 | /* This will only be invoked if the driver is _not_ in XOFF state. |
| 1160 | * What this means is that we need not check it, and that this |
| 1161 | * invariant will hold if we make sure that the netif_*_queue() |
| 1162 | * calls are done at the proper times. |
| 1163 | */ |
| 1164 | |
| 1165 | static int |
| 1166 | e100_send_packet(struct sk_buff *skb, struct net_device *dev) |
| 1167 | { |
| 1168 | struct net_local *np = (struct net_local *)dev->priv; |
| 1169 | unsigned char *buf = skb->data; |
| 1170 | unsigned long flags; |
| 1171 | |
| 1172 | #ifdef ETHDEBUG |
| 1173 | printk("send packet len %d\n", length); |
| 1174 | #endif |
| 1175 | spin_lock_irqsave(&np->lock, flags); /* protect from tx_interrupt and ourself */ |
| 1176 | |
| 1177 | myNextTxDesc->skb = skb; |
| 1178 | |
| 1179 | dev->trans_start = jiffies; |
| 1180 | |
| 1181 | e100_hardware_send_packet(buf, skb->len); |
| 1182 | |
| 1183 | myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); |
| 1184 | |
| 1185 | /* Stop queue if full */ |
| 1186 | if (myNextTxDesc == myFirstTxDesc) { |
| 1187 | netif_stop_queue(dev); |
| 1188 | } |
| 1189 | |
| 1190 | spin_unlock_irqrestore(&np->lock, flags); |
| 1191 | |
| 1192 | return 0; |
| 1193 | } |
| 1194 | |
| 1195 | /* |
| 1196 | * The typical workload of the driver: |
| 1197 | * Handle the network interface interrupts. |
| 1198 | */ |
| 1199 | |
| 1200 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1201 | e100rxtx_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | { |
| 1203 | struct net_device *dev = (struct net_device *)dev_id; |
| 1204 | struct net_local *np = (struct net_local *)dev->priv; |
| 1205 | unsigned long irqbits = *R_IRQ_MASK2_RD; |
| 1206 | |
| 1207 | /* Disable RX/TX IRQs to avoid reentrancy */ |
| 1208 | *R_IRQ_MASK2_CLR = |
| 1209 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | |
| 1210 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); |
| 1211 | |
| 1212 | /* Handle received packets */ |
| 1213 | if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) { |
| 1214 | /* acknowledge the eop interrupt */ |
| 1215 | |
| 1216 | *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); |
| 1217 | |
| 1218 | /* check if one or more complete packets were indeed received */ |
| 1219 | |
| 1220 | while ((*R_DMA_CH1_FIRST != virt_to_phys(myNextRxDesc)) && |
| 1221 | (myNextRxDesc != myLastRxDesc)) { |
| 1222 | /* Take out the buffer and give it to the OS, then |
| 1223 | * allocate a new buffer to put a packet in. |
| 1224 | */ |
| 1225 | e100_rx(dev); |
| 1226 | ((struct net_local *)dev->priv)->stats.rx_packets++; |
| 1227 | /* restart/continue on the channel, for safety */ |
| 1228 | *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart); |
| 1229 | /* clear dma channel 1 eop/descr irq bits */ |
| 1230 | *R_DMA_CH1_CLR_INTR = |
| 1231 | IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do) | |
| 1232 | IO_STATE(R_DMA_CH1_CLR_INTR, clr_descr, do); |
| 1233 | |
| 1234 | /* now, we might have gotten another packet |
| 1235 | so we have to loop back and check if so */ |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | /* Report any packets that have been sent */ |
| 1240 | while (myFirstTxDesc != phys_to_virt(*R_DMA_CH0_FIRST) && |
| 1241 | myFirstTxDesc != myNextTxDesc) |
| 1242 | { |
| 1243 | np->stats.tx_bytes += myFirstTxDesc->skb->len; |
| 1244 | np->stats.tx_packets++; |
| 1245 | |
| 1246 | /* dma is ready with the transmission of the data in tx_skb, so now |
| 1247 | we can release the skb memory */ |
| 1248 | dev_kfree_skb_irq(myFirstTxDesc->skb); |
| 1249 | myFirstTxDesc->skb = 0; |
| 1250 | myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); |
| 1251 | } |
| 1252 | |
| 1253 | if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { |
| 1254 | /* acknowledge the eop interrupt and wake up queue */ |
| 1255 | *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); |
| 1256 | netif_wake_queue(dev); |
| 1257 | } |
| 1258 | |
| 1259 | /* Enable RX/TX IRQs again */ |
| 1260 | *R_IRQ_MASK2_SET = |
| 1261 | IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | |
| 1262 | IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); |
| 1263 | |
| 1264 | return IRQ_HANDLED; |
| 1265 | } |
| 1266 | |
| 1267 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1268 | e100nw_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | { |
| 1270 | struct net_device *dev = (struct net_device *)dev_id; |
| 1271 | struct net_local *np = (struct net_local *)dev->priv; |
| 1272 | unsigned long irqbits = *R_IRQ_MASK0_RD; |
| 1273 | |
| 1274 | /* check for underrun irq */ |
| 1275 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) { |
| 1276 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); |
| 1277 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; |
| 1278 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); |
| 1279 | np->stats.tx_errors++; |
| 1280 | D(printk("ethernet receiver underrun!\n")); |
| 1281 | } |
| 1282 | |
| 1283 | /* check for overrun irq */ |
| 1284 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) { |
| 1285 | update_rx_stats(&np->stats); /* this will ack the irq */ |
| 1286 | D(printk("ethernet receiver overrun!\n")); |
| 1287 | } |
| 1288 | /* check for excessive collision irq */ |
| 1289 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, excessive_col, active)) { |
| 1290 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); |
| 1291 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; |
| 1292 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); |
| 1293 | *R_NETWORK_TR_CTRL = IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr); |
| 1294 | np->stats.tx_errors++; |
| 1295 | D(printk("ethernet excessive collisions!\n")); |
| 1296 | } |
| 1297 | return IRQ_HANDLED; |
| 1298 | } |
| 1299 | |
| 1300 | /* We have a good packet(s), get it/them out of the buffers. */ |
| 1301 | static void |
| 1302 | e100_rx(struct net_device *dev) |
| 1303 | { |
| 1304 | struct sk_buff *skb; |
| 1305 | int length = 0; |
| 1306 | struct net_local *np = (struct net_local *)dev->priv; |
| 1307 | unsigned char *skb_data_ptr; |
| 1308 | #ifdef ETHDEBUG |
| 1309 | int i; |
| 1310 | #endif |
| 1311 | |
| 1312 | if (!led_active && time_after(jiffies, led_next_time)) { |
| 1313 | /* light the network leds depending on the current speed. */ |
| 1314 | e100_set_network_leds(NETWORK_ACTIVITY); |
| 1315 | |
| 1316 | /* Set the earliest time we may clear the LED */ |
| 1317 | led_next_time = jiffies + NET_FLASH_TIME; |
| 1318 | led_active = 1; |
| 1319 | mod_timer(&clear_led_timer, jiffies + HZ/10); |
| 1320 | } |
| 1321 | |
| 1322 | length = myNextRxDesc->descr.hw_len - 4; |
| 1323 | ((struct net_local *)dev->priv)->stats.rx_bytes += length; |
| 1324 | |
| 1325 | #ifdef ETHDEBUG |
| 1326 | printk("Got a packet of length %d:\n", length); |
| 1327 | /* dump the first bytes in the packet */ |
| 1328 | skb_data_ptr = (unsigned char *)phys_to_virt(myNextRxDesc->descr.buf); |
| 1329 | for (i = 0; i < 8; i++) { |
| 1330 | printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i * 8, |
| 1331 | skb_data_ptr[0],skb_data_ptr[1],skb_data_ptr[2],skb_data_ptr[3], |
| 1332 | skb_data_ptr[4],skb_data_ptr[5],skb_data_ptr[6],skb_data_ptr[7]); |
| 1333 | skb_data_ptr += 8; |
| 1334 | } |
| 1335 | #endif |
| 1336 | |
| 1337 | if (length < RX_COPYBREAK) { |
| 1338 | /* Small packet, copy data */ |
| 1339 | skb = dev_alloc_skb(length - ETHER_HEAD_LEN); |
| 1340 | if (!skb) { |
| 1341 | np->stats.rx_errors++; |
| 1342 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); |
| 1343 | return; |
| 1344 | } |
| 1345 | |
| 1346 | skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */ |
| 1347 | skb_data_ptr = skb_push(skb, ETHER_HEAD_LEN); /* allocate room for the header */ |
| 1348 | |
| 1349 | #ifdef ETHDEBUG |
| 1350 | printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n", |
| 1351 | skb->head, skb->data, skb->tail, skb->end); |
| 1352 | printk("copying packet to 0x%x.\n", skb_data_ptr); |
| 1353 | #endif |
| 1354 | |
| 1355 | memcpy(skb_data_ptr, phys_to_virt(myNextRxDesc->descr.buf), length); |
| 1356 | } |
| 1357 | else { |
| 1358 | /* Large packet, send directly to upper layers and allocate new |
| 1359 | * memory (aligned to cache line boundary to avoid bug). |
| 1360 | * Before sending the skb to upper layers we must make sure that |
| 1361 | * skb->data points to the aligned start of the packet. |
| 1362 | */ |
| 1363 | int align; |
| 1364 | struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); |
| 1365 | if (!new_skb) { |
| 1366 | np->stats.rx_errors++; |
| 1367 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); |
| 1368 | return; |
| 1369 | } |
| 1370 | skb = myNextRxDesc->skb; |
| 1371 | align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data; |
| 1372 | skb_put(skb, length + align); |
| 1373 | skb_pull(skb, align); /* Remove alignment bytes */ |
| 1374 | myNextRxDesc->skb = new_skb; |
| 1375 | myNextRxDesc->descr.buf = L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc->skb->data)); |
| 1376 | } |
| 1377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | skb->protocol = eth_type_trans(skb, dev); |
| 1379 | |
| 1380 | /* Send the packet to the upper layers */ |
| 1381 | netif_rx(skb); |
| 1382 | |
| 1383 | /* Prepare for next packet */ |
| 1384 | myNextRxDesc->descr.status = 0; |
| 1385 | myPrevRxDesc = myNextRxDesc; |
| 1386 | myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next); |
| 1387 | |
| 1388 | rx_queue_len++; |
| 1389 | |
| 1390 | /* Check if descriptors should be returned */ |
| 1391 | if (rx_queue_len == RX_QUEUE_THRESHOLD) { |
| 1392 | flush_etrax_cache(); |
| 1393 | myPrevRxDesc->descr.ctrl |= d_eol; |
| 1394 | myLastRxDesc->descr.ctrl &= ~d_eol; |
| 1395 | myLastRxDesc = myPrevRxDesc; |
| 1396 | rx_queue_len = 0; |
| 1397 | } |
| 1398 | } |
| 1399 | |
| 1400 | /* The inverse routine to net_open(). */ |
| 1401 | static int |
| 1402 | e100_close(struct net_device *dev) |
| 1403 | { |
| 1404 | struct net_local *np = (struct net_local *)dev->priv; |
| 1405 | |
| 1406 | printk(KERN_INFO "Closing %s.\n", dev->name); |
| 1407 | |
| 1408 | netif_stop_queue(dev); |
| 1409 | |
| 1410 | *R_IRQ_MASK0_CLR = |
| 1411 | IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | |
| 1412 | IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | |
| 1413 | IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); |
| 1414 | |
| 1415 | *R_IRQ_MASK2_CLR = |
| 1416 | IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | |
| 1417 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | |
| 1418 | IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | |
| 1419 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); |
| 1420 | |
| 1421 | /* Stop the receiver and the transmitter */ |
| 1422 | |
| 1423 | RESET_DMA(NETWORK_TX_DMA_NBR); |
| 1424 | RESET_DMA(NETWORK_RX_DMA_NBR); |
| 1425 | |
| 1426 | /* Flush the Tx and disable Rx here. */ |
| 1427 | |
| 1428 | free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); |
| 1429 | free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); |
| 1430 | free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); |
| 1431 | |
| 1432 | /* Update the statistics here. */ |
| 1433 | |
| 1434 | update_rx_stats(&np->stats); |
| 1435 | update_tx_stats(&np->stats); |
| 1436 | |
| 1437 | /* Stop speed/duplex timers */ |
| 1438 | del_timer(&speed_timer); |
| 1439 | del_timer(&duplex_timer); |
| 1440 | |
| 1441 | return 0; |
| 1442 | } |
| 1443 | |
| 1444 | static int |
| 1445 | e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 1446 | { |
| 1447 | struct mii_ioctl_data *data = if_mii(ifr); |
| 1448 | struct net_local *np = netdev_priv(dev); |
| 1449 | |
| 1450 | spin_lock(&np->lock); /* Preempt protection */ |
| 1451 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | case SIOCGMIIPHY: /* Get PHY address */ |
| 1453 | data->phy_id = mdio_phy_addr; |
| 1454 | break; |
| 1455 | case SIOCGMIIREG: /* Read MII register */ |
| 1456 | data->val_out = e100_get_mdio_reg(dev, mdio_phy_addr, data->reg_num); |
| 1457 | break; |
| 1458 | case SIOCSMIIREG: /* Write MII register */ |
| 1459 | e100_set_mdio_reg(dev, mdio_phy_addr, data->reg_num, data->val_in); |
| 1460 | break; |
| 1461 | /* The ioctls below should be considered obsolete but are */ |
| 1462 | /* still present for compatability with old scripts/apps */ |
| 1463 | case SET_ETH_SPEED_10: /* 10 Mbps */ |
| 1464 | e100_set_speed(dev, 10); |
| 1465 | break; |
| 1466 | case SET_ETH_SPEED_100: /* 100 Mbps */ |
| 1467 | e100_set_speed(dev, 100); |
| 1468 | break; |
| 1469 | case SET_ETH_SPEED_AUTO: /* Auto negotiate speed */ |
| 1470 | e100_set_speed(dev, 0); |
| 1471 | break; |
| 1472 | case SET_ETH_DUPLEX_HALF: /* Half duplex. */ |
| 1473 | e100_set_duplex(dev, half); |
| 1474 | break; |
| 1475 | case SET_ETH_DUPLEX_FULL: /* Full duplex. */ |
| 1476 | e100_set_duplex(dev, full); |
| 1477 | break; |
| 1478 | case SET_ETH_DUPLEX_AUTO: /* Autonegotiate duplex*/ |
| 1479 | e100_set_duplex(dev, autoneg); |
| 1480 | break; |
| 1481 | default: |
| 1482 | return -EINVAL; |
| 1483 | } |
| 1484 | spin_unlock(&np->lock); |
| 1485 | return 0; |
| 1486 | } |
| 1487 | |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 1488 | static int e100_set_settings(struct net_device *dev, |
| 1489 | struct ethtool_cmd *ecmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | { |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 1491 | ecmd->supported = SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | |
| 1493 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 1494 | ecmd->port = PORT_TP; |
| 1495 | ecmd->transceiver = XCVR_EXTERNAL; |
| 1496 | ecmd->phy_address = mdio_phy_addr; |
| 1497 | ecmd->speed = current_speed; |
| 1498 | ecmd->duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF; |
| 1499 | ecmd->advertising = ADVERTISED_TP; |
| 1500 | |
| 1501 | if (current_duplex == autoneg && current_speed_selection == 0) |
| 1502 | ecmd->advertising |= ADVERTISED_Autoneg; |
| 1503 | else { |
| 1504 | ecmd->advertising |= |
| 1505 | ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | |
| 1506 | ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; |
| 1507 | if (current_speed_selection == 10) |
| 1508 | ecmd->advertising &= ~(ADVERTISED_100baseT_Half | |
| 1509 | ADVERTISED_100baseT_Full); |
| 1510 | else if (current_speed_selection == 100) |
| 1511 | ecmd->advertising &= ~(ADVERTISED_10baseT_Half | |
| 1512 | ADVERTISED_10baseT_Full); |
| 1513 | if (current_duplex == half) |
| 1514 | ecmd->advertising &= ~(ADVERTISED_10baseT_Full | |
| 1515 | ADVERTISED_100baseT_Full); |
| 1516 | else if (current_duplex == full) |
| 1517 | ecmd->advertising &= ~(ADVERTISED_10baseT_Half | |
| 1518 | ADVERTISED_100baseT_Half); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | } |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 1520 | |
| 1521 | ecmd->autoneg = AUTONEG_ENABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | return 0; |
| 1523 | } |
| 1524 | |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 1525 | static int e100_set_settings(struct net_device *dev, |
| 1526 | struct ethtool_cmd *ecmd) |
| 1527 | { |
| 1528 | if (ecmd->autoneg == AUTONEG_ENABLE) { |
| 1529 | e100_set_duplex(dev, autoneg); |
| 1530 | e100_set_speed(dev, 0); |
| 1531 | } else { |
| 1532 | e100_set_duplex(dev, ecmd->duplex == DUPLEX_HALF ? half : full); |
| 1533 | e100_set_speed(dev, ecmd->speed == SPEED_10 ? 10: 100); |
| 1534 | } |
| 1535 | |
| 1536 | return 0; |
| 1537 | } |
| 1538 | |
| 1539 | static void e100_get_drvinfo(struct net_device *dev, |
| 1540 | struct ethtool_drvinfo *info) |
| 1541 | { |
| 1542 | strncpy(info->driver, "ETRAX 100LX", sizeof(info->driver) - 1); |
| 1543 | strncpy(info->version, "$Revision: 1.31 $", sizeof(info->version) - 1); |
| 1544 | strncpy(info->fw_version, "N/A", sizeof(info->fw_version) - 1); |
| 1545 | strncpy(info->bus_info, "N/A", sizeof(info->bus_info) - 1); |
| 1546 | } |
| 1547 | |
| 1548 | static int e100_nway_reset(struct net_device *dev) |
| 1549 | { |
| 1550 | if (current_duplex == autoneg && current_speed_selection == 0) |
| 1551 | e100_negotiate(dev); |
| 1552 | return 0; |
| 1553 | } |
| 1554 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 1555 | static const struct ethtool_ops e100_ethtool_ops = { |
Christoph Hellwig | 76f2b4d | 2005-11-07 06:18:57 +0100 | [diff] [blame] | 1556 | .get_settings = e100_get_settings, |
| 1557 | .set_settings = e100_set_settings, |
| 1558 | .get_drvinfo = e100_get_drvinfo, |
| 1559 | .nway_reset = e100_nway_reset, |
| 1560 | .get_link = ethtool_op_get_link, |
| 1561 | }; |
| 1562 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | static int |
| 1564 | e100_set_config(struct net_device *dev, struct ifmap *map) |
| 1565 | { |
| 1566 | struct net_local *np = (struct net_local *)dev->priv; |
| 1567 | spin_lock(&np->lock); /* Preempt protection */ |
| 1568 | |
| 1569 | switch(map->port) { |
| 1570 | case IF_PORT_UNKNOWN: |
| 1571 | /* Use autoneg */ |
| 1572 | e100_set_speed(dev, 0); |
| 1573 | e100_set_duplex(dev, autoneg); |
| 1574 | break; |
| 1575 | case IF_PORT_10BASET: |
| 1576 | e100_set_speed(dev, 10); |
| 1577 | e100_set_duplex(dev, autoneg); |
| 1578 | break; |
| 1579 | case IF_PORT_100BASET: |
| 1580 | case IF_PORT_100BASETX: |
| 1581 | e100_set_speed(dev, 100); |
| 1582 | e100_set_duplex(dev, autoneg); |
| 1583 | break; |
| 1584 | case IF_PORT_100BASEFX: |
| 1585 | case IF_PORT_10BASE2: |
| 1586 | case IF_PORT_AUI: |
| 1587 | spin_unlock(&np->lock); |
| 1588 | return -EOPNOTSUPP; |
| 1589 | break; |
| 1590 | default: |
| 1591 | printk(KERN_ERR "%s: Invalid media selected", dev->name); |
| 1592 | spin_unlock(&np->lock); |
| 1593 | return -EINVAL; |
| 1594 | } |
| 1595 | spin_unlock(&np->lock); |
| 1596 | return 0; |
| 1597 | } |
| 1598 | |
| 1599 | static void |
| 1600 | update_rx_stats(struct net_device_stats *es) |
| 1601 | { |
| 1602 | unsigned long r = *R_REC_COUNTERS; |
| 1603 | /* update stats relevant to reception errors */ |
| 1604 | es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r); |
| 1605 | es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r); |
| 1606 | es->rx_frame_errors += IO_EXTRACT(R_REC_COUNTERS, alignment_error, r); |
| 1607 | es->rx_length_errors += IO_EXTRACT(R_REC_COUNTERS, oversize, r); |
| 1608 | } |
| 1609 | |
| 1610 | static void |
| 1611 | update_tx_stats(struct net_device_stats *es) |
| 1612 | { |
| 1613 | unsigned long r = *R_TR_COUNTERS; |
| 1614 | /* update stats relevant to transmission errors */ |
| 1615 | es->collisions += |
| 1616 | IO_EXTRACT(R_TR_COUNTERS, single_col, r) + |
| 1617 | IO_EXTRACT(R_TR_COUNTERS, multiple_col, r); |
| 1618 | es->tx_errors += IO_EXTRACT(R_TR_COUNTERS, deferred, r); |
| 1619 | } |
| 1620 | |
| 1621 | /* |
| 1622 | * Get the current statistics. |
| 1623 | * This may be called with the card open or closed. |
| 1624 | */ |
| 1625 | static struct net_device_stats * |
| 1626 | e100_get_stats(struct net_device *dev) |
| 1627 | { |
| 1628 | struct net_local *lp = (struct net_local *)dev->priv; |
| 1629 | unsigned long flags; |
| 1630 | spin_lock_irqsave(&lp->lock, flags); |
| 1631 | |
| 1632 | update_rx_stats(&lp->stats); |
| 1633 | update_tx_stats(&lp->stats); |
| 1634 | |
| 1635 | spin_unlock_irqrestore(&lp->lock, flags); |
| 1636 | return &lp->stats; |
| 1637 | } |
| 1638 | |
| 1639 | /* |
| 1640 | * Set or clear the multicast filter for this adaptor. |
| 1641 | * num_addrs == -1 Promiscuous mode, receive all packets |
| 1642 | * num_addrs == 0 Normal mode, clear multicast list |
| 1643 | * num_addrs > 0 Multicast mode, receive normal and MC packets, |
| 1644 | * and do best-effort filtering. |
| 1645 | */ |
| 1646 | static void |
| 1647 | set_multicast_list(struct net_device *dev) |
| 1648 | { |
| 1649 | struct net_local *lp = (struct net_local *)dev->priv; |
| 1650 | int num_addr = dev->mc_count; |
| 1651 | unsigned long int lo_bits; |
| 1652 | unsigned long int hi_bits; |
| 1653 | spin_lock(&lp->lock); |
| 1654 | if (dev->flags & IFF_PROMISC) |
| 1655 | { |
| 1656 | /* promiscuous mode */ |
| 1657 | lo_bits = 0xfffffffful; |
| 1658 | hi_bits = 0xfffffffful; |
| 1659 | |
| 1660 | /* Enable individual receive */ |
| 1661 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, receive); |
| 1662 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; |
| 1663 | } else if (dev->flags & IFF_ALLMULTI) { |
| 1664 | /* enable all multicasts */ |
| 1665 | lo_bits = 0xfffffffful; |
| 1666 | hi_bits = 0xfffffffful; |
| 1667 | |
| 1668 | /* Disable individual receive */ |
| 1669 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); |
| 1670 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; |
| 1671 | } else if (num_addr == 0) { |
| 1672 | /* Normal, clear the mc list */ |
| 1673 | lo_bits = 0x00000000ul; |
| 1674 | hi_bits = 0x00000000ul; |
| 1675 | |
| 1676 | /* Disable individual receive */ |
| 1677 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); |
| 1678 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; |
| 1679 | } else { |
| 1680 | /* MC mode, receive normal and MC packets */ |
| 1681 | char hash_ix; |
| 1682 | struct dev_mc_list *dmi = dev->mc_list; |
| 1683 | int i; |
| 1684 | char *baddr; |
| 1685 | lo_bits = 0x00000000ul; |
| 1686 | hi_bits = 0x00000000ul; |
| 1687 | for (i=0; i<num_addr; i++) { |
| 1688 | /* Calculate the hash index for the GA registers */ |
| 1689 | |
| 1690 | hash_ix = 0; |
| 1691 | baddr = dmi->dmi_addr; |
| 1692 | hash_ix ^= (*baddr) & 0x3f; |
| 1693 | hash_ix ^= ((*baddr) >> 6) & 0x03; |
| 1694 | ++baddr; |
| 1695 | hash_ix ^= ((*baddr) << 2) & 0x03c; |
| 1696 | hash_ix ^= ((*baddr) >> 4) & 0xf; |
| 1697 | ++baddr; |
| 1698 | hash_ix ^= ((*baddr) << 4) & 0x30; |
| 1699 | hash_ix ^= ((*baddr) >> 2) & 0x3f; |
| 1700 | ++baddr; |
| 1701 | hash_ix ^= (*baddr) & 0x3f; |
| 1702 | hash_ix ^= ((*baddr) >> 6) & 0x03; |
| 1703 | ++baddr; |
| 1704 | hash_ix ^= ((*baddr) << 2) & 0x03c; |
| 1705 | hash_ix ^= ((*baddr) >> 4) & 0xf; |
| 1706 | ++baddr; |
| 1707 | hash_ix ^= ((*baddr) << 4) & 0x30; |
| 1708 | hash_ix ^= ((*baddr) >> 2) & 0x3f; |
| 1709 | |
| 1710 | hash_ix &= 0x3f; |
| 1711 | |
| 1712 | if (hash_ix >= 32) { |
| 1713 | hi_bits |= (1 << (hash_ix-32)); |
| 1714 | } |
| 1715 | else { |
| 1716 | lo_bits |= (1 << hash_ix); |
| 1717 | } |
| 1718 | dmi = dmi->next; |
| 1719 | } |
| 1720 | /* Disable individual receive */ |
| 1721 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); |
| 1722 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; |
| 1723 | } |
| 1724 | *R_NETWORK_GA_0 = lo_bits; |
| 1725 | *R_NETWORK_GA_1 = hi_bits; |
| 1726 | spin_unlock(&lp->lock); |
| 1727 | } |
| 1728 | |
| 1729 | void |
| 1730 | e100_hardware_send_packet(char *buf, int length) |
| 1731 | { |
| 1732 | D(printk("e100 send pack, buf 0x%x len %d\n", buf, length)); |
| 1733 | |
| 1734 | if (!led_active && time_after(jiffies, led_next_time)) { |
| 1735 | /* light the network leds depending on the current speed. */ |
| 1736 | e100_set_network_leds(NETWORK_ACTIVITY); |
| 1737 | |
| 1738 | /* Set the earliest time we may clear the LED */ |
| 1739 | led_next_time = jiffies + NET_FLASH_TIME; |
| 1740 | led_active = 1; |
| 1741 | mod_timer(&clear_led_timer, jiffies + HZ/10); |
| 1742 | } |
| 1743 | |
| 1744 | /* configure the tx dma descriptor */ |
| 1745 | myNextTxDesc->descr.sw_len = length; |
| 1746 | myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait; |
| 1747 | myNextTxDesc->descr.buf = virt_to_phys(buf); |
| 1748 | |
| 1749 | /* Move end of list */ |
| 1750 | myLastTxDesc->descr.ctrl &= ~d_eol; |
| 1751 | myLastTxDesc = myNextTxDesc; |
| 1752 | |
| 1753 | /* Restart DMA channel */ |
| 1754 | *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart); |
| 1755 | } |
| 1756 | |
| 1757 | static void |
| 1758 | e100_clear_network_leds(unsigned long dummy) |
| 1759 | { |
| 1760 | if (led_active && time_after(jiffies, led_next_time)) { |
| 1761 | e100_set_network_leds(NO_NETWORK_ACTIVITY); |
| 1762 | |
| 1763 | /* Set the earliest time we may set the LED */ |
| 1764 | led_next_time = jiffies + NET_FLASH_PAUSE; |
| 1765 | led_active = 0; |
| 1766 | } |
| 1767 | } |
| 1768 | |
| 1769 | static void |
| 1770 | e100_set_network_leds(int active) |
| 1771 | { |
| 1772 | #if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK) |
| 1773 | int light_leds = (active == NO_NETWORK_ACTIVITY); |
| 1774 | #elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY) |
| 1775 | int light_leds = (active == NETWORK_ACTIVITY); |
| 1776 | #else |
| 1777 | #error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY" |
| 1778 | #endif |
| 1779 | |
| 1780 | if (!current_speed) { |
| 1781 | /* Make LED red, link is down */ |
| 1782 | #if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION) |
| 1783 | LED_NETWORK_SET(LED_RED); |
| 1784 | #else |
| 1785 | LED_NETWORK_SET(LED_OFF); |
| 1786 | #endif |
| 1787 | } |
| 1788 | else if (light_leds) { |
| 1789 | if (current_speed == 10) { |
| 1790 | LED_NETWORK_SET(LED_ORANGE); |
| 1791 | } else { |
| 1792 | LED_NETWORK_SET(LED_GREEN); |
| 1793 | } |
| 1794 | } |
| 1795 | else { |
| 1796 | LED_NETWORK_SET(LED_OFF); |
| 1797 | } |
| 1798 | } |
| 1799 | |
| 1800 | static int |
| 1801 | etrax_init_module(void) |
| 1802 | { |
| 1803 | return etrax_ethernet_init(); |
| 1804 | } |
| 1805 | |
| 1806 | static int __init |
| 1807 | e100_boot_setup(char* str) |
| 1808 | { |
| 1809 | struct sockaddr sa = {0}; |
| 1810 | int i; |
| 1811 | |
| 1812 | /* Parse the colon separated Ethernet station address */ |
| 1813 | for (i = 0; i < ETH_ALEN; i++) { |
| 1814 | unsigned int tmp; |
| 1815 | if (sscanf(str + 3*i, "%2x", &tmp) != 1) { |
| 1816 | printk(KERN_WARNING "Malformed station address"); |
| 1817 | return 0; |
| 1818 | } |
| 1819 | sa.sa_data[i] = (char)tmp; |
| 1820 | } |
| 1821 | |
| 1822 | default_mac = sa; |
| 1823 | return 1; |
| 1824 | } |
| 1825 | |
| 1826 | __setup("etrax100_eth=", e100_boot_setup); |
| 1827 | |
| 1828 | module_init(etrax_init_module); |