Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | static const char version[] = "de600.c: $Revision: 1.41-2.5 $, Bjorn Ekwall (bj0rn@blox.se)\n"; |
| 2 | /* |
| 3 | * de600.c |
| 4 | * |
| 5 | * Linux driver for the D-Link DE-600 Ethernet pocket adapter. |
| 6 | * |
| 7 | * Portions (C) Copyright 1993, 1994 by Bjorn Ekwall |
| 8 | * The Author may be reached as bj0rn@blox.se |
| 9 | * |
| 10 | * Based on adapter information gathered from DE600.ASM by D-Link Inc., |
| 11 | * as included on disk C in the v.2.11 of PC/TCP from FTP Software. |
| 12 | * For DE600.asm: |
| 13 | * Portions (C) Copyright 1990 D-Link, Inc. |
| 14 | * Copyright, 1988-1992, Russell Nelson, Crynwr Software |
| 15 | * |
| 16 | * Adapted to the sample network driver core for linux, |
| 17 | * written by: Donald Becker <becker@super.org> |
| 18 | * (Now at <becker@scyld.com>) |
| 19 | * |
| 20 | **************************************************************/ |
| 21 | /* |
| 22 | * This program is free software; you can redistribute it and/or modify |
| 23 | * it under the terms of the GNU General Public License as published by |
| 24 | * the Free Software Foundation; either version 2, or (at your option) |
| 25 | * any later version. |
| 26 | * |
| 27 | * This program is distributed in the hope that it will be useful, |
| 28 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 30 | * GNU General Public License for more details. |
| 31 | * |
| 32 | * You should have received a copy of the GNU General Public License |
| 33 | * along with this program; if not, write to the Free Software |
| 34 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 35 | * |
| 36 | **************************************************************/ |
| 37 | |
| 38 | /* Add more time here if your adapter won't work OK: */ |
| 39 | #define DE600_SLOW_DOWN udelay(delay_time) |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/module.h> |
| 42 | #include <linux/kernel.h> |
| 43 | #include <linux/types.h> |
| 44 | #include <linux/fcntl.h> |
| 45 | #include <linux/string.h> |
| 46 | #include <linux/interrupt.h> |
| 47 | #include <linux/ioport.h> |
| 48 | #include <linux/in.h> |
| 49 | #include <asm/system.h> |
| 50 | #include <linux/errno.h> |
| 51 | #include <linux/init.h> |
| 52 | #include <linux/delay.h> |
| 53 | #include <linux/inet.h> |
| 54 | #include <linux/netdevice.h> |
| 55 | #include <linux/etherdevice.h> |
| 56 | #include <linux/skbuff.h> |
| 57 | |
| 58 | #include <asm/io.h> |
| 59 | |
| 60 | #include "de600.h" |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | static unsigned int check_lost = 1; |
| 63 | module_param(check_lost, bool, 0); |
| 64 | MODULE_PARM_DESC(check_lost, "If set then check for unplugged de600"); |
| 65 | |
| 66 | static unsigned int delay_time = 10; |
| 67 | module_param(delay_time, int, 0); |
| 68 | MODULE_PARM_DESC(delay_time, "DE-600 deley on I/O in microseconds"); |
| 69 | |
| 70 | |
| 71 | /* |
| 72 | * D-Link driver variables: |
| 73 | */ |
| 74 | |
| 75 | static volatile int rx_page; |
| 76 | |
| 77 | #define TX_PAGES 2 |
| 78 | static volatile int tx_fifo[TX_PAGES]; |
| 79 | static volatile int tx_fifo_in; |
| 80 | static volatile int tx_fifo_out; |
| 81 | static volatile int free_tx_pages = TX_PAGES; |
| 82 | static int was_down; |
| 83 | static DEFINE_SPINLOCK(de600_lock); |
| 84 | |
| 85 | static inline u8 de600_read_status(struct net_device *dev) |
| 86 | { |
| 87 | u8 status; |
| 88 | |
| 89 | outb_p(STATUS, DATA_PORT); |
| 90 | status = inb(STATUS_PORT); |
| 91 | outb_p(NULL_COMMAND | HI_NIBBLE, DATA_PORT); |
| 92 | |
| 93 | return status; |
| 94 | } |
| 95 | |
| 96 | static inline u8 de600_read_byte(unsigned char type, struct net_device *dev) |
| 97 | { |
| 98 | /* dev used by macros */ |
| 99 | u8 lo; |
| 100 | outb_p((type), DATA_PORT); |
| 101 | lo = ((unsigned char)inb(STATUS_PORT)) >> 4; |
| 102 | outb_p((type) | HI_NIBBLE, DATA_PORT); |
| 103 | return ((unsigned char)inb(STATUS_PORT) & (unsigned char)0xf0) | lo; |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | * Open/initialize the board. This is called (in the current kernel) |
| 108 | * after booting when 'ifconfig <dev->name> $IP_ADDR' is run (in rc.inet1). |
| 109 | * |
| 110 | * This routine should set everything up anew at each open, even |
| 111 | * registers that "should" only need to be set once at boot, so that |
| 112 | * there is a non-reboot way to recover if something goes wrong. |
| 113 | */ |
| 114 | |
| 115 | static int de600_open(struct net_device *dev) |
| 116 | { |
| 117 | unsigned long flags; |
| 118 | int ret = request_irq(DE600_IRQ, de600_interrupt, 0, dev->name, dev); |
| 119 | if (ret) { |
| 120 | printk(KERN_ERR "%s: unable to get IRQ %d\n", dev->name, DE600_IRQ); |
| 121 | return ret; |
| 122 | } |
| 123 | spin_lock_irqsave(&de600_lock, flags); |
| 124 | ret = adapter_init(dev); |
| 125 | spin_unlock_irqrestore(&de600_lock, flags); |
| 126 | return ret; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * The inverse routine to de600_open(). |
| 131 | */ |
| 132 | |
| 133 | static int de600_close(struct net_device *dev) |
| 134 | { |
| 135 | select_nic(); |
| 136 | rx_page = 0; |
| 137 | de600_put_command(RESET); |
| 138 | de600_put_command(STOP_RESET); |
| 139 | de600_put_command(0); |
| 140 | select_prn(); |
| 141 | free_irq(DE600_IRQ, dev); |
| 142 | return 0; |
| 143 | } |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | static inline void trigger_interrupt(struct net_device *dev) |
| 146 | { |
| 147 | de600_put_command(FLIP_IRQ); |
| 148 | select_prn(); |
| 149 | DE600_SLOW_DOWN; |
| 150 | select_nic(); |
| 151 | de600_put_command(0); |
| 152 | } |
| 153 | |
| 154 | /* |
| 155 | * Copy a buffer to the adapter transmit page memory. |
| 156 | * Start sending. |
| 157 | */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 160 | { |
| 161 | unsigned long flags; |
| 162 | int transmit_from; |
| 163 | int len; |
| 164 | int tickssofar; |
| 165 | u8 *buffer = skb->data; |
| 166 | int i; |
| 167 | |
| 168 | if (free_tx_pages <= 0) { /* Do timeouts, to avoid hangs. */ |
| 169 | tickssofar = jiffies - dev->trans_start; |
| 170 | if (tickssofar < 5) |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame^] | 171 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | /* else */ |
| 173 | printk(KERN_WARNING "%s: transmit timed out (%d), %s?\n", dev->name, tickssofar, "network cable problem"); |
| 174 | /* Restart the adapter. */ |
| 175 | spin_lock_irqsave(&de600_lock, flags); |
| 176 | if (adapter_init(dev)) { |
| 177 | spin_unlock_irqrestore(&de600_lock, flags); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame^] | 178 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | } |
| 180 | spin_unlock_irqrestore(&de600_lock, flags); |
| 181 | } |
| 182 | |
| 183 | /* Start real output */ |
Alexander Beregalov | 6430325 | 2009-05-15 10:22:39 +0000 | [diff] [blame] | 184 | pr_debug("de600_start_xmit:len=%d, page %d/%d\n", skb->len, tx_fifo_in, free_tx_pages); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
| 186 | if ((len = skb->len) < RUNT) |
| 187 | len = RUNT; |
| 188 | |
| 189 | spin_lock_irqsave(&de600_lock, flags); |
| 190 | select_nic(); |
| 191 | tx_fifo[tx_fifo_in] = transmit_from = tx_page_adr(tx_fifo_in) - len; |
| 192 | tx_fifo_in = (tx_fifo_in + 1) % TX_PAGES; /* Next free tx page */ |
| 193 | |
| 194 | if(check_lost) |
| 195 | { |
| 196 | /* This costs about 40 instructions per packet... */ |
| 197 | de600_setup_address(NODE_ADDRESS, RW_ADDR); |
| 198 | de600_read_byte(READ_DATA, dev); |
| 199 | if (was_down || (de600_read_byte(READ_DATA, dev) != 0xde)) { |
| 200 | if (adapter_init(dev)) { |
| 201 | spin_unlock_irqrestore(&de600_lock, flags); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame^] | 202 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | } |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | de600_setup_address(transmit_from, RW_ADDR); |
| 208 | for (i = 0; i < skb->len ; ++i, ++buffer) |
| 209 | de600_put_byte(*buffer); |
| 210 | for (; i < len; ++i) |
| 211 | de600_put_byte(0); |
| 212 | |
| 213 | if (free_tx_pages-- == TX_PAGES) { /* No transmission going on */ |
| 214 | dev->trans_start = jiffies; |
| 215 | netif_start_queue(dev); /* allow more packets into adapter */ |
| 216 | /* Send page and generate a faked interrupt */ |
| 217 | de600_setup_address(transmit_from, TX_ADDR); |
| 218 | de600_put_command(TX_ENABLE); |
| 219 | } |
| 220 | else { |
| 221 | if (free_tx_pages) |
| 222 | netif_start_queue(dev); |
| 223 | else |
| 224 | netif_stop_queue(dev); |
| 225 | select_prn(); |
| 226 | } |
| 227 | spin_unlock_irqrestore(&de600_lock, flags); |
| 228 | dev_kfree_skb(skb); |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | /* |
| 233 | * The typical workload of the driver: |
| 234 | * Handle the network interface interrupts. |
| 235 | */ |
| 236 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 237 | static irqreturn_t de600_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | { |
| 239 | struct net_device *dev = dev_id; |
| 240 | u8 irq_status; |
| 241 | int retrig = 0; |
| 242 | int boguscount = 0; |
| 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | spin_lock(&de600_lock); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | select_nic(); |
| 247 | irq_status = de600_read_status(dev); |
| 248 | |
| 249 | do { |
Alexander Beregalov | 6430325 | 2009-05-15 10:22:39 +0000 | [diff] [blame] | 250 | pr_debug("de600_interrupt (%02X)\n", irq_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
| 252 | if (irq_status & RX_GOOD) |
| 253 | de600_rx_intr(dev); |
| 254 | else if (!(irq_status & RX_BUSY)) |
| 255 | de600_put_command(RX_ENABLE); |
| 256 | |
| 257 | /* Any transmission in progress? */ |
| 258 | if (free_tx_pages < TX_PAGES) |
| 259 | retrig = de600_tx_intr(dev, irq_status); |
| 260 | else |
| 261 | retrig = 0; |
| 262 | |
| 263 | irq_status = de600_read_status(dev); |
| 264 | } while ( (irq_status & RX_GOOD) || ((++boguscount < 100) && retrig) ); |
| 265 | /* |
| 266 | * Yeah, it _looks_ like busy waiting, smells like busy waiting |
| 267 | * and I know it's not PC, but please, it will only occur once |
| 268 | * in a while and then only for a loop or so (< 1ms for sure!) |
| 269 | */ |
| 270 | |
| 271 | /* Enable adapter interrupts */ |
| 272 | select_prn(); |
| 273 | if (retrig) |
| 274 | trigger_interrupt(dev); |
| 275 | spin_unlock(&de600_lock); |
| 276 | return IRQ_HANDLED; |
| 277 | } |
| 278 | |
| 279 | static int de600_tx_intr(struct net_device *dev, int irq_status) |
| 280 | { |
| 281 | /* |
| 282 | * Returns 1 if tx still not done |
| 283 | */ |
| 284 | |
| 285 | /* Check if current transmission is done yet */ |
| 286 | if (irq_status & TX_BUSY) |
| 287 | return 1; /* tx not done, try again */ |
| 288 | |
| 289 | /* else */ |
| 290 | /* If last transmission OK then bump fifo index */ |
| 291 | if (!(irq_status & TX_FAILED16)) { |
| 292 | tx_fifo_out = (tx_fifo_out + 1) % TX_PAGES; |
| 293 | ++free_tx_pages; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 294 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | netif_wake_queue(dev); |
| 296 | } |
| 297 | |
| 298 | /* More to send, or resend last packet? */ |
| 299 | if ((free_tx_pages < TX_PAGES) || (irq_status & TX_FAILED16)) { |
| 300 | dev->trans_start = jiffies; |
| 301 | de600_setup_address(tx_fifo[tx_fifo_out], TX_ADDR); |
| 302 | de600_put_command(TX_ENABLE); |
| 303 | return 1; |
| 304 | } |
| 305 | /* else */ |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | /* |
| 311 | * We have a good packet, get it out of the adapter. |
| 312 | */ |
| 313 | static void de600_rx_intr(struct net_device *dev) |
| 314 | { |
| 315 | struct sk_buff *skb; |
| 316 | int i; |
| 317 | int read_from; |
| 318 | int size; |
| 319 | unsigned char *buffer; |
| 320 | |
| 321 | /* Get size of received packet */ |
| 322 | size = de600_read_byte(RX_LEN, dev); /* low byte */ |
| 323 | size += (de600_read_byte(RX_LEN, dev) << 8); /* high byte */ |
| 324 | size -= 4; /* Ignore trailing 4 CRC-bytes */ |
| 325 | |
| 326 | /* Tell adapter where to store next incoming packet, enable receiver */ |
| 327 | read_from = rx_page_adr(); |
| 328 | next_rx_page(); |
| 329 | de600_put_command(RX_ENABLE); |
| 330 | |
| 331 | if ((size < 32) || (size > 1535)) { |
| 332 | printk(KERN_WARNING "%s: Bogus packet size %d.\n", dev->name, size); |
| 333 | if (size > 10000) |
| 334 | adapter_init(dev); |
| 335 | return; |
| 336 | } |
| 337 | |
| 338 | skb = dev_alloc_skb(size+2); |
| 339 | if (skb == NULL) { |
| 340 | printk("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, size); |
| 341 | return; |
| 342 | } |
| 343 | /* else */ |
| 344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | skb_reserve(skb,2); /* Align */ |
| 346 | |
| 347 | /* 'skb->data' points to the start of sk_buff data area. */ |
| 348 | buffer = skb_put(skb,size); |
| 349 | |
| 350 | /* copy the packet into the buffer */ |
| 351 | de600_setup_address(read_from, RW_ADDR); |
| 352 | for (i = size; i > 0; --i, ++buffer) |
| 353 | *buffer = de600_read_byte(READ_DATA, dev); |
| 354 | |
| 355 | skb->protocol=eth_type_trans(skb,dev); |
| 356 | |
| 357 | netif_rx(skb); |
| 358 | |
| 359 | /* update stats */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 360 | dev->stats.rx_packets++; /* count all receives */ |
| 361 | dev->stats.rx_bytes += size; /* count all received bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
| 363 | /* |
| 364 | * If any worth-while packets have been received, netif_rx() |
| 365 | * will work on them when we get to the tasklets. |
| 366 | */ |
| 367 | } |
| 368 | |
Stephen Hemminger | b8aa76a | 2009-01-07 17:34:36 -0800 | [diff] [blame] | 369 | static const struct net_device_ops de600_netdev_ops = { |
| 370 | .ndo_open = de600_open, |
| 371 | .ndo_stop = de600_close, |
| 372 | .ndo_start_xmit = de600_start_xmit, |
| 373 | .ndo_change_mtu = eth_change_mtu, |
| 374 | .ndo_set_mac_address = eth_mac_addr, |
| 375 | .ndo_validate_addr = eth_validate_addr, |
| 376 | }; |
| 377 | |
| 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | static struct net_device * __init de600_probe(void) |
| 380 | { |
| 381 | int i; |
| 382 | struct net_device *dev; |
| 383 | int err; |
| 384 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 385 | dev = alloc_etherdev(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | if (!dev) |
| 387 | return ERR_PTR(-ENOMEM); |
| 388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
| 390 | if (!request_region(DE600_IO, 3, "de600")) { |
| 391 | printk(KERN_WARNING "DE600: port 0x%x busy\n", DE600_IO); |
| 392 | err = -EBUSY; |
| 393 | goto out; |
| 394 | } |
| 395 | |
| 396 | printk(KERN_INFO "%s: D-Link DE-600 pocket adapter", dev->name); |
| 397 | /* Alpha testers must have the version number to report bugs. */ |
Alexander Beregalov | 6430325 | 2009-05-15 10:22:39 +0000 | [diff] [blame] | 398 | pr_debug("%s", version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
| 400 | /* probe for adapter */ |
| 401 | err = -ENODEV; |
| 402 | rx_page = 0; |
| 403 | select_nic(); |
| 404 | (void)de600_read_status(dev); |
| 405 | de600_put_command(RESET); |
| 406 | de600_put_command(STOP_RESET); |
| 407 | if (de600_read_status(dev) & 0xf0) { |
| 408 | printk(": not at I/O %#3x.\n", DATA_PORT); |
| 409 | goto out1; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Maybe we found one, |
| 414 | * have to check if it is a D-Link DE-600 adapter... |
| 415 | */ |
| 416 | |
| 417 | /* Get the adapter ethernet address from the ROM */ |
| 418 | de600_setup_address(NODE_ADDRESS, RW_ADDR); |
| 419 | for (i = 0; i < ETH_ALEN; i++) { |
| 420 | dev->dev_addr[i] = de600_read_byte(READ_DATA, dev); |
| 421 | dev->broadcast[i] = 0xff; |
| 422 | } |
| 423 | |
| 424 | /* Check magic code */ |
| 425 | if ((dev->dev_addr[1] == 0xde) && (dev->dev_addr[2] == 0x15)) { |
| 426 | /* OK, install real address */ |
| 427 | dev->dev_addr[0] = 0x00; |
| 428 | dev->dev_addr[1] = 0x80; |
| 429 | dev->dev_addr[2] = 0xc8; |
| 430 | dev->dev_addr[3] &= 0x0f; |
| 431 | dev->dev_addr[3] |= 0x70; |
| 432 | } else { |
| 433 | printk(" not identified in the printer port\n"); |
| 434 | goto out1; |
| 435 | } |
| 436 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 437 | printk(", Ethernet Address: %pM\n", dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
Stephen Hemminger | b8aa76a | 2009-01-07 17:34:36 -0800 | [diff] [blame] | 439 | dev->netdev_ops = &de600_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
| 441 | dev->flags&=~IFF_MULTICAST; |
| 442 | |
| 443 | select_prn(); |
| 444 | |
| 445 | err = register_netdev(dev); |
| 446 | if (err) |
| 447 | goto out1; |
| 448 | |
| 449 | return dev; |
| 450 | |
| 451 | out1: |
| 452 | release_region(DE600_IO, 3); |
| 453 | out: |
| 454 | free_netdev(dev); |
| 455 | return ERR_PTR(err); |
| 456 | } |
| 457 | |
| 458 | static int adapter_init(struct net_device *dev) |
| 459 | { |
| 460 | int i; |
| 461 | |
| 462 | select_nic(); |
| 463 | rx_page = 0; /* used by RESET */ |
| 464 | de600_put_command(RESET); |
| 465 | de600_put_command(STOP_RESET); |
| 466 | |
| 467 | /* Check if it is still there... */ |
| 468 | /* Get the some bytes of the adapter ethernet address from the ROM */ |
| 469 | de600_setup_address(NODE_ADDRESS, RW_ADDR); |
| 470 | de600_read_byte(READ_DATA, dev); |
| 471 | if ((de600_read_byte(READ_DATA, dev) != 0xde) || |
| 472 | (de600_read_byte(READ_DATA, dev) != 0x15)) { |
| 473 | /* was: if (de600_read_status(dev) & 0xf0) { */ |
| 474 | printk("Something has happened to the DE-600! Please check it and do a new ifconfig!\n"); |
| 475 | /* Goodbye, cruel world... */ |
| 476 | dev->flags &= ~IFF_UP; |
| 477 | de600_close(dev); |
| 478 | was_down = 1; |
| 479 | netif_stop_queue(dev); /* Transmit busy... */ |
| 480 | return 1; /* failed */ |
| 481 | } |
| 482 | |
| 483 | if (was_down) { |
| 484 | printk(KERN_INFO "%s: Thanks, I feel much better now!\n", dev->name); |
| 485 | was_down = 0; |
| 486 | } |
| 487 | |
| 488 | tx_fifo_in = 0; |
| 489 | tx_fifo_out = 0; |
| 490 | free_tx_pages = TX_PAGES; |
| 491 | |
| 492 | |
| 493 | /* set the ether address. */ |
| 494 | de600_setup_address(NODE_ADDRESS, RW_ADDR); |
| 495 | for (i = 0; i < ETH_ALEN; i++) |
| 496 | de600_put_byte(dev->dev_addr[i]); |
| 497 | |
| 498 | /* where to start saving incoming packets */ |
| 499 | rx_page = RX_BP | RX_BASE_PAGE; |
| 500 | de600_setup_address(MEM_4K, RW_ADDR); |
| 501 | /* Enable receiver */ |
| 502 | de600_put_command(RX_ENABLE); |
| 503 | select_prn(); |
| 504 | |
| 505 | netif_start_queue(dev); |
| 506 | |
| 507 | return 0; /* OK */ |
| 508 | } |
| 509 | |
| 510 | static struct net_device *de600_dev; |
| 511 | |
| 512 | static int __init de600_init(void) |
| 513 | { |
| 514 | de600_dev = de600_probe(); |
| 515 | if (IS_ERR(de600_dev)) |
| 516 | return PTR_ERR(de600_dev); |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | static void __exit de600_exit(void) |
| 521 | { |
| 522 | unregister_netdev(de600_dev); |
| 523 | release_region(DE600_IO, 3); |
| 524 | free_netdev(de600_dev); |
| 525 | } |
| 526 | |
| 527 | module_init(de600_init); |
| 528 | module_exit(de600_exit); |
| 529 | |
| 530 | MODULE_LICENSE("GPL"); |