drivers/net/ethernet/3com/3c515.c

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This source file includes following definitions.
init_module
tc515_probe
check_device
cleanup_card
corkscrew_scan
corkscrew_setup
corkscrew_open
corkscrew_timer
corkscrew_timeout
corkscrew_start_xmit
corkscrew_interrupt
corkscrew_rx
boomerang_rx
corkscrew_close
corkscrew_get_stats
update_stats
set_rx_mode
netdev_get_drvinfo
netdev_get_msglevel
netdev_set_msglevel
cleanup_module
   1 /*
   2         Written 1997-1998 by Donald Becker.
   3 
   4         This software may be used and distributed according to the terms
   5         of the GNU General Public License, incorporated herein by reference.
   6 
   7         This driver is for the 3Com ISA EtherLink XL "Corkscrew" 3c515 ethercard.
   8 
   9         The author may be reached as becker@scyld.com, or C/O
  10         Scyld Computing Corporation
  11         410 Severn Ave., Suite 210
  12         Annapolis MD 21403
  13 
  14 
  15         2000/2/2- Added support for kernel-level ISAPnP
  16                 by Stephen Frost <sfrost@snowman.net> and Alessandro Zummo
  17         Cleaned up for 2.3.x/softnet by Jeff Garzik and Alan Cox.
  18 
  19         2001/11/17 - Added ethtool support (jgarzik)
  20 
  21         2002/10/28 - Locking updates for 2.5 (alan@lxorguk.ukuu.org.uk)
  22 
  23 */
  24 
  25 #define DRV_NAME                "3c515"
  26 #define DRV_VERSION             "0.99t-ac"
  27 #define DRV_RELDATE             "28-Oct-2002"
  28 
  29 static char *version =
  30 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " becker@scyld.com and others\n";
  31 
  32 #define CORKSCREW 1
  33 
  34 /* "Knobs" that adjust features and parameters. */
  35 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
  36    Setting to > 1512 effectively disables this feature. */
  37 static int rx_copybreak = 200;
  38 
  39 /* Allow setting MTU to a larger size, bypassing the normal ethernet setup. */
  40 static const int mtu = 1500;
  41 
  42 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
  43 static int max_interrupt_work = 20;
  44 
  45 /* Enable the automatic media selection code -- usually set. */
  46 #define AUTOMEDIA 1
  47 
  48 /* Allow the use of fragment bus master transfers instead of only
  49    programmed-I/O for Vortex cards.  Full-bus-master transfers are always
  50    enabled by default on Boomerang cards.  If VORTEX_BUS_MASTER is defined,
  51    the feature may be turned on using 'options'. */
  52 #define VORTEX_BUS_MASTER
  53 
  54 /* A few values that may be tweaked. */
  55 /* Keep the ring sizes a power of two for efficiency. */
  56 #define TX_RING_SIZE    16
  57 #define RX_RING_SIZE    16
  58 #define PKT_BUF_SZ              1536    /* Size of each temporary Rx buffer. */
  59 
  60 #include <linux/module.h>
  61 #include <linux/isapnp.h>
  62 #include <linux/kernel.h>
  63 #include <linux/netdevice.h>
  64 #include <linux/string.h>
  65 #include <linux/errno.h>
  66 #include <linux/in.h>
  67 #include <linux/ioport.h>
  68 #include <linux/skbuff.h>
  69 #include <linux/etherdevice.h>
  70 #include <linux/interrupt.h>
  71 #include <linux/timer.h>
  72 #include <linux/ethtool.h>
  73 #include <linux/bitops.h>
  74 
  75 #include <linux/uaccess.h>
  76 #include <asm/io.h>
  77 #include <asm/dma.h>
  78 
  79 #define NEW_MULTICAST
  80 #include <linux/delay.h>
  81 
  82 #define MAX_UNITS 8
  83 
  84 MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
  85 MODULE_DESCRIPTION("3Com 3c515 Corkscrew driver");
  86 MODULE_LICENSE("GPL");
  87 MODULE_VERSION(DRV_VERSION);
  88 
  89 /* "Knobs" for adjusting internal parameters. */
  90 /* Put out somewhat more debugging messages. (0 - no msg, 1 minimal msgs). */
  91 #define DRIVER_DEBUG 1
  92 /* Some values here only for performance evaluation and path-coverage
  93    debugging. */
  94 static int rx_nocopy, rx_copy, queued_packet;
  95 
  96 /* Number of times to check to see if the Tx FIFO has space, used in some
  97    limited cases. */
  98 #define WAIT_TX_AVAIL 200
  99 
 100 /* Operational parameter that usually are not changed. */
 101 #define TX_TIMEOUT  ((4*HZ)/10) /* Time in jiffies before concluding Tx hung */
 102 
 103 /* The size here is somewhat misleading: the Corkscrew also uses the ISA
 104    aliased registers at <base>+0x400.
 105    */
 106 #define CORKSCREW_TOTAL_SIZE 0x20
 107 
 108 #ifdef DRIVER_DEBUG
 109 static int corkscrew_debug = DRIVER_DEBUG;
 110 #else
 111 static int corkscrew_debug = 1;
 112 #endif
 113 
 114 #define CORKSCREW_ID 10
 115 
 116 /*
 117                                 Theory of Operation
 118 
 119 I. Board Compatibility
 120 
 121 This device driver is designed for the 3Com 3c515 ISA Fast EtherLink XL,
 122 3Com's ISA bus adapter for Fast Ethernet.  Due to the unique I/O port layout,
 123 it's not practical to integrate this driver with the other EtherLink drivers.
 124 
 125 II. Board-specific settings
 126 
 127 The Corkscrew has an EEPROM for configuration, but no special settings are
 128 needed for Linux.
 129 
 130 III. Driver operation
 131 
 132 The 3c515 series use an interface that's very similar to the 3c900 "Boomerang"
 133 PCI cards, with the bus master interface extensively modified to work with
 134 the ISA bus.
 135 
 136 The card is capable of full-bus-master transfers with separate
 137 lists of transmit and receive descriptors, similar to the AMD LANCE/PCnet,
 138 DEC Tulip and Intel Speedo3.
 139 
 140 This driver uses a "RX_COPYBREAK" scheme rather than a fixed intermediate
 141 receive buffer.  This scheme allocates full-sized skbuffs as receive
 142 buffers.  The value RX_COPYBREAK is used as the copying breakpoint: it is
 143 chosen to trade-off the memory wasted by passing the full-sized skbuff to
 144 the queue layer for all frames vs. the copying cost of copying a frame to a
 145 correctly-sized skbuff.
 146 
 147 
 148 IIIC. Synchronization
 149 The driver runs as two independent, single-threaded flows of control.  One
 150 is the send-packet routine, which enforces single-threaded use by the netif
 151 layer.  The other thread is the interrupt handler, which is single
 152 threaded by the hardware and other software.
 153 
 154 IV. Notes
 155 
 156 Thanks to Terry Murphy of 3Com for providing documentation and a development
 157 board.
 158 
 159 The names "Vortex", "Boomerang" and "Corkscrew" are the internal 3Com
 160 project names.  I use these names to eliminate confusion -- 3Com product
 161 numbers and names are very similar and often confused.
 162 
 163 The new chips support both ethernet (1.5K) and FDDI (4.5K) frame sizes!
 164 This driver only supports ethernet frames because of the recent MTU limit
 165 of 1.5K, but the changes to support 4.5K are minimal.
 166 */
 167 
 168 /* Operational definitions.
 169    These are not used by other compilation units and thus are not
 170    exported in a ".h" file.
 171 
 172    First the windows.  There are eight register windows, with the command
 173    and status registers available in each.
 174    */
 175 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
 176 #define EL3_CMD 0x0e
 177 #define EL3_STATUS 0x0e
 178 
 179 /* The top five bits written to EL3_CMD are a command, the lower
 180    11 bits are the parameter, if applicable.
 181    Note that 11 parameters bits was fine for ethernet, but the new chips
 182    can handle FDDI length frames (~4500 octets) and now parameters count
 183    32-bit 'Dwords' rather than octets. */
 184 
 185 enum corkscrew_cmd {
 186         TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11,
 187         RxDisable = 3 << 11, RxEnable = 4 << 11, RxReset = 5 << 11,
 188         UpStall = 6 << 11, UpUnstall = (6 << 11) + 1, DownStall = (6 << 11) + 2,
 189         DownUnstall = (6 << 11) + 3, RxDiscard = 8 << 11, TxEnable = 9 << 11,
 190         TxDisable = 10 << 11, TxReset = 11 << 11, FakeIntr = 12 << 11,
 191         AckIntr = 13 << 11, SetIntrEnb = 14 << 11, SetStatusEnb = 15 << 11,
 192         SetRxFilter = 16 << 11, SetRxThreshold = 17 << 11,
 193         SetTxThreshold = 18 << 11, SetTxStart = 19 << 11, StartDMAUp = 20 << 11,
 194         StartDMADown = (20 << 11) + 1, StatsEnable = 21 << 11,
 195         StatsDisable = 22 << 11, StopCoax = 23 << 11,
 196 };
 197 
 198 /* The SetRxFilter command accepts the following classes: */
 199 enum RxFilter {
 200         RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
 201 };
 202 
 203 /* Bits in the general status register. */
 204 enum corkscrew_status {
 205         IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
 206         TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
 207         IntReq = 0x0040, StatsFull = 0x0080,
 208         DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10,
 209         DMAInProgress = 1 << 11,        /* DMA controller is still busy. */
 210         CmdInProgress = 1 << 12,        /* EL3_CMD is still busy. */
 211 };
 212 
 213 /* Register window 1 offsets, the window used in normal operation.
 214    On the Corkscrew this window is always mapped at offsets 0x10-0x1f. */
 215 enum Window1 {
 216         TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
 217         RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B,
 218         TxFree = 0x1C,          /* Remaining free bytes in Tx buffer. */
 219 };
 220 enum Window0 {
 221         Wn0IRQ = 0x08,
 222 #if defined(CORKSCREW)
 223         Wn0EepromCmd = 0x200A,  /* Corkscrew EEPROM command register. */
 224         Wn0EepromData = 0x200C, /* Corkscrew EEPROM results register. */
 225 #else
 226         Wn0EepromCmd = 10,      /* Window 0: EEPROM command register. */
 227         Wn0EepromData = 12,     /* Window 0: EEPROM results register. */
 228 #endif
 229 };
 230 enum Win0_EEPROM_bits {
 231         EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0,
 232         EEPROM_EWENB = 0x30,    /* Enable erasing/writing for 10 msec. */
 233         EEPROM_EWDIS = 0x00,    /* Disable EWENB before 10 msec timeout. */
 234 };
 235 
 236 /* EEPROM locations. */
 237 enum eeprom_offset {
 238         PhysAddr01 = 0, PhysAddr23 = 1, PhysAddr45 = 2, ModelID = 3,
 239         EtherLink3ID = 7,
 240 };
 241 
 242 enum Window3 {                  /* Window 3: MAC/config bits. */
 243         Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8,
 244 };
 245 enum wn3_config {
 246         Ram_size = 7,
 247         Ram_width = 8,
 248         Ram_speed = 0x30,
 249         Rom_size = 0xc0,
 250         Ram_split_shift = 16,
 251         Ram_split = 3 << Ram_split_shift,
 252         Xcvr_shift = 20,
 253         Xcvr = 7 << Xcvr_shift,
 254         Autoselect = 0x1000000,
 255 };
 256 
 257 enum Window4 {
 258         Wn4_NetDiag = 6, Wn4_Media = 10,        /* Window 4: Xcvr/media bits. */
 259 };
 260 enum Win4_Media_bits {
 261         Media_SQE = 0x0008,     /* Enable SQE error counting for AUI. */
 262         Media_10TP = 0x00C0,    /* Enable link beat and jabber for 10baseT. */
 263         Media_Lnk = 0x0080,     /* Enable just link beat for 100TX/100FX. */
 264         Media_LnkBeat = 0x0800,
 265 };
 266 enum Window7 {                  /* Window 7: Bus Master control. */
 267         Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12,
 268 };
 269 
 270 /* Boomerang-style bus master control registers.  Note ISA aliases! */
 271 enum MasterCtrl {
 272         PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen =
 273             0x40c,
 274         TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418,
 275 };
 276 
 277 /* The Rx and Tx descriptor lists.
 278    Caution Alpha hackers: these types are 32 bits!  Note also the 8 byte
 279    alignment contraint on tx_ring[] and rx_ring[]. */
 280 struct boom_rx_desc {
 281         u32 next;
 282         s32 status;
 283         u32 addr;
 284         s32 length;
 285 };
 286 
 287 /* Values for the Rx status entry. */
 288 enum rx_desc_status {
 289         RxDComplete = 0x00008000, RxDError = 0x4000,
 290         /* See boomerang_rx() for actual error bits */
 291 };
 292 
 293 struct boom_tx_desc {
 294         u32 next;
 295         s32 status;
 296         u32 addr;
 297         s32 length;
 298 };
 299 
 300 struct corkscrew_private {
 301         const char *product_name;
 302         struct list_head list;
 303         struct net_device *our_dev;
 304         /* The Rx and Tx rings are here to keep them quad-word-aligned. */
 305         struct boom_rx_desc rx_ring[RX_RING_SIZE];
 306         struct boom_tx_desc tx_ring[TX_RING_SIZE];
 307         /* The addresses of transmit- and receive-in-place skbuffs. */
 308         struct sk_buff *rx_skbuff[RX_RING_SIZE];
 309         struct sk_buff *tx_skbuff[TX_RING_SIZE];
 310         unsigned int cur_rx, cur_tx;    /* The next free ring entry */
 311         unsigned int dirty_rx, dirty_tx;/* The ring entries to be free()ed. */
 312         struct sk_buff *tx_skb; /* Packet being eaten by bus master ctrl.  */
 313         struct timer_list timer;        /* Media selection timer. */
 314         int capabilities        ;       /* Adapter capabilities word. */
 315         int options;                    /* User-settable misc. driver options. */
 316         int last_rx_packets;            /* For media autoselection. */
 317         unsigned int available_media:8, /* From Wn3_Options */
 318                 media_override:3,       /* Passed-in media type. */
 319                 default_media:3,        /* Read from the EEPROM. */
 320                 full_duplex:1, autoselect:1, bus_master:1,      /* Vortex can only do a fragment bus-m. */
 321                 full_bus_master_tx:1, full_bus_master_rx:1,     /* Boomerang  */
 322                 tx_full:1;
 323         spinlock_t lock;
 324         struct device *dev;
 325 };
 326 
 327 /* The action to take with a media selection timer tick.
 328    Note that we deviate from the 3Com order by checking 10base2 before AUI.
 329  */
 330 enum xcvr_types {
 331         XCVR_10baseT = 0, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2, XCVR_100baseTx,
 332         XCVR_100baseFx, XCVR_MII = 6, XCVR_Default = 8,
 333 };
 334 
 335 static struct media_table {
 336         char *name;
 337         unsigned int media_bits:16,     /* Bits to set in Wn4_Media register. */
 338                 mask:8,                 /* The transceiver-present bit in Wn3_Config. */
 339                 next:8;                 /* The media type to try next. */
 340         short wait;                     /* Time before we check media status. */
 341 } media_tbl[] = {
 342         { "10baseT", Media_10TP, 0x08, XCVR_10base2, (14 * HZ) / 10 },
 343         { "10Mbs AUI", Media_SQE, 0x20, XCVR_Default, (1 * HZ) / 10},
 344         { "undefined", 0, 0x80, XCVR_10baseT, 10000},
 345         { "10base2", 0, 0x10, XCVR_AUI, (1 * HZ) / 10},
 346         { "100baseTX", Media_Lnk, 0x02, XCVR_100baseFx, (14 * HZ) / 10},
 347         { "100baseFX", Media_Lnk, 0x04, XCVR_MII, (14 * HZ) / 10},
 348         { "MII", 0, 0x40, XCVR_10baseT, 3 * HZ},
 349         { "undefined", 0, 0x01, XCVR_10baseT, 10000},
 350         { "Default", 0, 0xFF, XCVR_10baseT, 10000},
 351 };
 352 
 353 #ifdef __ISAPNP__
 354 static struct isapnp_device_id corkscrew_isapnp_adapters[] = {
 355         {       ISAPNP_ANY_ID, ISAPNP_ANY_ID,
 356                 ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5051),
 357                 (long) "3Com Fast EtherLink ISA" },
 358         { }     /* terminate list */
 359 };
 360 
 361 MODULE_DEVICE_TABLE(isapnp, corkscrew_isapnp_adapters);
 362 
 363 static int nopnp;
 364 #endif /* __ISAPNP__ */
 365 
 366 static struct net_device *corkscrew_scan(int unit);
 367 static int corkscrew_setup(struct net_device *dev, int ioaddr,
 368                             struct pnp_dev *idev, int card_number);
 369 static int corkscrew_open(struct net_device *dev);
 370 static void corkscrew_timer(struct timer_list *t);
 371 static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb,
 372                                         struct net_device *dev);
 373 static int corkscrew_rx(struct net_device *dev);
 374 static void corkscrew_timeout(struct net_device *dev);
 375 static int boomerang_rx(struct net_device *dev);
 376 static irqreturn_t corkscrew_interrupt(int irq, void *dev_id);
 377 static int corkscrew_close(struct net_device *dev);
 378 static void update_stats(int addr, struct net_device *dev);
 379 static struct net_device_stats *corkscrew_get_stats(struct net_device *dev);
 380 static void set_rx_mode(struct net_device *dev);
 381 static const struct ethtool_ops netdev_ethtool_ops;
 382 
 383 
 384 /*
 385    Unfortunately maximizing the shared code between the integrated and
 386    module version of the driver results in a complicated set of initialization
 387    procedures.
 388    init_module() -- modules /  tc59x_init()  -- built-in
 389                 The wrappers for corkscrew_scan()
 390    corkscrew_scan()              The common routine that scans for PCI and EISA cards
 391    corkscrew_found_device() Allocate a device structure when we find a card.
 392                                         Different versions exist for modules and built-in.
 393    corkscrew_probe1()           Fill in the device structure -- this is separated
 394                                         so that the modules code can put it in dev->init.
 395 */
 396 /* This driver uses 'options' to pass the media type, full-duplex flag, etc. */
 397 /* Note: this is the only limit on the number of cards supported!! */
 398 static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1, };
 399 
 400 #ifdef MODULE
 401 static int debug = -1;
 402 
 403 module_param(debug, int, 0);
 404 module_param_array(options, int, NULL, 0);
 405 module_param(rx_copybreak, int, 0);
 406 module_param(max_interrupt_work, int, 0);
 407 MODULE_PARM_DESC(debug, "3c515 debug level (0-6)");
 408 MODULE_PARM_DESC(options, "3c515: Bits 0-2: media type, bit 3: full duplex, bit 4: bus mastering");
 409 MODULE_PARM_DESC(rx_copybreak, "3c515 copy breakpoint for copy-only-tiny-frames");
 410 MODULE_PARM_DESC(max_interrupt_work, "3c515 maximum events handled per interrupt");
 411 
 412 /* A list of all installed Vortex devices, for removing the driver module. */
 413 /* we will need locking (and refcounting) if we ever use it for more */
 414 static LIST_HEAD(root_corkscrew_dev);
 415 
 416 int init_module(void)
 417 {
 418         int found = 0;
 419         if (debug >= 0)
 420                 corkscrew_debug = debug;
 421         if (corkscrew_debug)
 422                 pr_debug("%s", version);
 423         while (corkscrew_scan(-1))
 424                 found++;
 425         return found ? 0 : -ENODEV;
 426 }
 427 
 428 #else
 429 struct net_device *tc515_probe(int unit)
 430 {
 431         struct net_device *dev = corkscrew_scan(unit);
 432         static int printed;
 433 
 434         if (!dev)
 435                 return ERR_PTR(-ENODEV);
 436 
 437         if (corkscrew_debug > 0 && !printed) {
 438                 printed = 1;
 439                 pr_debug("%s", version);
 440         }
 441 
 442         return dev;
 443 }
 444 #endif                          /* not MODULE */
 445 
 446 static int check_device(unsigned ioaddr)
 447 {
 448         int timer;
 449 
 450         if (!request_region(ioaddr, CORKSCREW_TOTAL_SIZE, "3c515"))
 451                 return 0;
 452         /* Check the resource configuration for a matching ioaddr. */
 453         if ((inw(ioaddr + 0x2002) & 0x1f0) != (ioaddr & 0x1f0)) {
 454                 release_region(ioaddr, CORKSCREW_TOTAL_SIZE);
 455                 return 0;
 456         }
 457         /* Verify by reading the device ID from the EEPROM. */
 458         outw(EEPROM_Read + 7, ioaddr + Wn0EepromCmd);
 459         /* Pause for at least 162 us. for the read to take place. */
 460         for (timer = 4; timer >= 0; timer--) {
 461                 udelay(162);
 462                 if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
 463                         break;
 464         }
 465         if (inw(ioaddr + Wn0EepromData) != 0x6d50) {
 466                 release_region(ioaddr, CORKSCREW_TOTAL_SIZE);
 467                 return 0;
 468         }
 469         return 1;
 470 }
 471 
 472 static void cleanup_card(struct net_device *dev)
 473 {
 474         struct corkscrew_private *vp = netdev_priv(dev);
 475         list_del_init(&vp->list);
 476         if (dev->dma)
 477                 free_dma(dev->dma);
 478         outw(TotalReset, dev->base_addr + EL3_CMD);
 479         release_region(dev->base_addr, CORKSCREW_TOTAL_SIZE);
 480         if (vp->dev)
 481                 pnp_device_detach(to_pnp_dev(vp->dev));
 482 }
 483 
 484 static struct net_device *corkscrew_scan(int unit)
 485 {
 486         struct net_device *dev;
 487         static int cards_found = 0;
 488         static int ioaddr;
 489         int err;
 490 #ifdef __ISAPNP__
 491         short i;
 492         static int pnp_cards;
 493 #endif
 494 
 495         dev = alloc_etherdev(sizeof(struct corkscrew_private));
 496         if (!dev)
 497                 return ERR_PTR(-ENOMEM);
 498 
 499         if (unit >= 0) {
 500                 sprintf(dev->name, "eth%d", unit);
 501                 netdev_boot_setup_check(dev);
 502         }
 503 
 504 #ifdef __ISAPNP__
 505         if(nopnp == 1)
 506                 goto no_pnp;
 507         for(i=0; corkscrew_isapnp_adapters[i].vendor != 0; i++) {
 508                 struct pnp_dev *idev = NULL;
 509                 int irq;
 510                 while((idev = pnp_find_dev(NULL,
 511                                            corkscrew_isapnp_adapters[i].vendor,
 512                                            corkscrew_isapnp_adapters[i].function,
 513                                            idev))) {
 514 
 515                         if (pnp_device_attach(idev) < 0)
 516                                 continue;
 517                         if (pnp_activate_dev(idev) < 0) {
 518                                 pr_warn("pnp activate failed (out of resources?)\n");
 519                                 pnp_device_detach(idev);
 520                                 continue;
 521                         }
 522                         if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
 523                                 pnp_device_detach(idev);
 524                                 continue;
 525                         }
 526                         ioaddr = pnp_port_start(idev, 0);
 527                         irq = pnp_irq(idev, 0);
 528                         if (!check_device(ioaddr)) {
 529                                 pnp_device_detach(idev);
 530                                 continue;
 531                         }
 532                         if(corkscrew_debug)
 533                                 pr_debug("ISAPNP reports %s at i/o 0x%x, irq %d\n",
 534                                         (char*) corkscrew_isapnp_adapters[i].driver_data, ioaddr, irq);
 535                         pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n",
 536                                 inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
 537                         /* irq = inw(ioaddr + 0x2002) & 15; */ /* Use the irq from isapnp */
 538                         SET_NETDEV_DEV(dev, &idev->dev);
 539                         pnp_cards++;
 540                         err = corkscrew_setup(dev, ioaddr, idev, cards_found++);
 541                         if (!err)
 542                                 return dev;
 543                         cleanup_card(dev);
 544                 }
 545         }
 546 no_pnp:
 547 #endif /* __ISAPNP__ */
 548 
 549         /* Check all locations on the ISA bus -- evil! */
 550         for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20) {
 551                 if (!check_device(ioaddr))
 552                         continue;
 553 
 554                 pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n",
 555                      inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
 556                 err = corkscrew_setup(dev, ioaddr, NULL, cards_found++);
 557                 if (!err)
 558                         return dev;
 559                 cleanup_card(dev);
 560         }
 561         free_netdev(dev);
 562         return NULL;
 563 }
 564 
 565 
 566 static const struct net_device_ops netdev_ops = {
 567         .ndo_open               = corkscrew_open,
 568         .ndo_stop               = corkscrew_close,
 569         .ndo_start_xmit         = corkscrew_start_xmit,
 570         .ndo_tx_timeout         = corkscrew_timeout,
 571         .ndo_get_stats          = corkscrew_get_stats,
 572         .ndo_set_rx_mode        = set_rx_mode,
 573         .ndo_set_mac_address    = eth_mac_addr,
 574         .ndo_validate_addr      = eth_validate_addr,
 575 };
 576 
 577 
 578 static int corkscrew_setup(struct net_device *dev, int ioaddr,
 579                             struct pnp_dev *idev, int card_number)
 580 {
 581         struct corkscrew_private *vp = netdev_priv(dev);
 582         unsigned int eeprom[0x40], checksum = 0;        /* EEPROM contents */
 583         int i;
 584         int irq;
 585 
 586 #ifdef __ISAPNP__
 587         if (idev) {
 588                 irq = pnp_irq(idev, 0);
 589                 vp->dev = &idev->dev;
 590         } else {
 591                 irq = inw(ioaddr + 0x2002) & 15;
 592         }
 593 #else
 594         irq = inw(ioaddr + 0x2002) & 15;
 595 #endif
 596 
 597         dev->base_addr = ioaddr;
 598         dev->irq = irq;
 599         dev->dma = inw(ioaddr + 0x2000) & 7;
 600         vp->product_name = "3c515";
 601         vp->options = dev->mem_start;
 602         vp->our_dev = dev;
 603 
 604         if (!vp->options) {
 605                  if (card_number >= MAX_UNITS)
 606                         vp->options = -1;
 607                 else
 608                         vp->options = options[card_number];
 609         }
 610 
 611         if (vp->options >= 0) {
 612                 vp->media_override = vp->options & 7;
 613                 if (vp->media_override == 2)
 614                         vp->media_override = 0;
 615                 vp->full_duplex = (vp->options & 8) ? 1 : 0;
 616                 vp->bus_master = (vp->options & 16) ? 1 : 0;
 617         } else {
 618                 vp->media_override = 7;
 619                 vp->full_duplex = 0;
 620                 vp->bus_master = 0;
 621         }
 622 #ifdef MODULE
 623         list_add(&vp->list, &root_corkscrew_dev);
 624 #endif
 625 
 626         pr_info("%s: 3Com %s at %#3x,", dev->name, vp->product_name, ioaddr);
 627 
 628         spin_lock_init(&vp->lock);
 629 
 630         timer_setup(&vp->timer, corkscrew_timer, 0);
 631 
 632         /* Read the station address from the EEPROM. */
 633         EL3WINDOW(0);
 634         for (i = 0; i < 0x18; i++) {
 635                 __be16 *phys_addr = (__be16 *) dev->dev_addr;
 636                 int timer;
 637                 outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd);
 638                 /* Pause for at least 162 us. for the read to take place. */
 639                 for (timer = 4; timer >= 0; timer--) {
 640                         udelay(162);
 641                         if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
 642                                 break;
 643                 }
 644                 eeprom[i] = inw(ioaddr + Wn0EepromData);
 645                 checksum ^= eeprom[i];
 646                 if (i < 3)
 647                         phys_addr[i] = htons(eeprom[i]);
 648         }
 649         checksum = (checksum ^ (checksum >> 8)) & 0xff;
 650         if (checksum != 0x00)
 651                 pr_cont(" ***INVALID CHECKSUM %4.4x*** ", checksum);
 652         pr_cont(" %pM", dev->dev_addr);
 653         if (eeprom[16] == 0x11c7) {     /* Corkscrew */
 654                 if (request_dma(dev->dma, "3c515")) {
 655                         pr_cont(", DMA %d allocation failed", dev->dma);
 656                         dev->dma = 0;
 657                 } else
 658                         pr_cont(", DMA %d", dev->dma);
 659         }
 660         pr_cont(", IRQ %d\n", dev->irq);
 661         /* Tell them about an invalid IRQ. */
 662         if (corkscrew_debug && (dev->irq <= 0 || dev->irq > 15))
 663                 pr_warn(" *** Warning: this IRQ is unlikely to work! ***\n");
 664 
 665         {
 666                 static const char * const ram_split[] = {
 667                         "5:3", "3:1", "1:1", "3:5"
 668                 };
 669                 __u32 config;
 670                 EL3WINDOW(3);
 671                 vp->available_media = inw(ioaddr + Wn3_Options);
 672                 config = inl(ioaddr + Wn3_Config);
 673                 if (corkscrew_debug > 1)
 674                         pr_info("  Internal config register is %4.4x, transceivers %#x.\n",
 675                                 config, inw(ioaddr + Wn3_Options));
 676                 pr_info("  %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n",
 677                         8 << config & Ram_size,
 678                         config & Ram_width ? "word" : "byte",
 679                         ram_split[(config & Ram_split) >> Ram_split_shift],
 680                         config & Autoselect ? "autoselect/" : "",
 681                         media_tbl[(config & Xcvr) >> Xcvr_shift].name);
 682                 vp->default_media = (config & Xcvr) >> Xcvr_shift;
 683                 vp->autoselect = config & Autoselect ? 1 : 0;
 684                 dev->if_port = vp->default_media;
 685         }
 686         if (vp->media_override != 7) {
 687                 pr_info("  Media override to transceiver type %d (%s).\n",
 688                        vp->media_override,
 689                        media_tbl[vp->media_override].name);
 690                 dev->if_port = vp->media_override;
 691         }
 692 
 693         vp->capabilities = eeprom[16];
 694         vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0;
 695         /* Rx is broken at 10mbps, so we always disable it. */
 696         /* vp->full_bus_master_rx = 0; */
 697         vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0;
 698 
 699         /* The 3c51x-specific entries in the device structure. */
 700         dev->netdev_ops = &netdev_ops;
 701         dev->watchdog_timeo = (400 * HZ) / 1000;
 702         dev->ethtool_ops = &netdev_ethtool_ops;
 703 
 704         return register_netdev(dev);
 705 }
 706 
 707 
 708 static int corkscrew_open(struct net_device *dev)
 709 {
 710         int ioaddr = dev->base_addr;
 711         struct corkscrew_private *vp = netdev_priv(dev);
 712         bool armtimer = false;
 713         __u32 config;
 714         int i;
 715 
 716         /* Before initializing select the active media port. */
 717         EL3WINDOW(3);
 718         if (vp->full_duplex)
 719                 outb(0x20, ioaddr + Wn3_MAC_Ctrl);      /* Set the full-duplex bit. */
 720         config = inl(ioaddr + Wn3_Config);
 721 
 722         if (vp->media_override != 7) {
 723                 if (corkscrew_debug > 1)
 724                         pr_info("%s: Media override to transceiver %d (%s).\n",
 725                                 dev->name, vp->media_override,
 726                                 media_tbl[vp->media_override].name);
 727                 dev->if_port = vp->media_override;
 728         } else if (vp->autoselect) {
 729                 /* Find first available media type, starting with 100baseTx. */
 730                 dev->if_port = 4;
 731                 while (!(vp->available_media & media_tbl[dev->if_port].mask))
 732                         dev->if_port = media_tbl[dev->if_port].next;
 733 
 734                 if (corkscrew_debug > 1)
 735                         pr_debug("%s: Initial media type %s.\n",
 736                                dev->name, media_tbl[dev->if_port].name);
 737                 armtimer = true;
 738         } else
 739                 dev->if_port = vp->default_media;
 740 
 741         config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift);
 742         outl(config, ioaddr + Wn3_Config);
 743 
 744         if (corkscrew_debug > 1) {
 745                 pr_debug("%s: corkscrew_open() InternalConfig %8.8x.\n",
 746                        dev->name, config);
 747         }
 748 
 749         outw(TxReset, ioaddr + EL3_CMD);
 750         for (i = 20; i >= 0; i--)
 751                 if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
 752                         break;
 753 
 754         outw(RxReset, ioaddr + EL3_CMD);
 755         /* Wait a few ticks for the RxReset command to complete. */
 756         for (i = 20; i >= 0; i--)
 757                 if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
 758                         break;
 759 
 760         outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
 761 
 762         /* Use the now-standard shared IRQ implementation. */
 763         if (vp->capabilities == 0x11c7) {
 764                 /* Corkscrew: Cannot share ISA resources. */
 765                 if (dev->irq == 0 ||
 766                     dev->dma == 0 ||
 767                     request_irq(dev->irq, corkscrew_interrupt, 0,
 768                                 vp->product_name, dev))
 769                         return -EAGAIN;
 770                 enable_dma(dev->dma);
 771                 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
 772         } else if (request_irq(dev->irq, corkscrew_interrupt, IRQF_SHARED,
 773                                vp->product_name, dev)) {
 774                 return -EAGAIN;
 775         }
 776 
 777         if (armtimer)
 778                 mod_timer(&vp->timer, jiffies + media_tbl[dev->if_port].wait);
 779 
 780         if (corkscrew_debug > 1) {
 781                 EL3WINDOW(4);
 782                 pr_debug("%s: corkscrew_open() irq %d media status %4.4x.\n",
 783                        dev->name, dev->irq, inw(ioaddr + Wn4_Media));
 784         }
 785 
 786         /* Set the station address and mask in window 2 each time opened. */
 787         EL3WINDOW(2);
 788         for (i = 0; i < 6; i++)
 789                 outb(dev->dev_addr[i], ioaddr + i);
 790         for (; i < 12; i += 2)
 791                 outw(0, ioaddr + i);
 792 
 793         if (dev->if_port == 3)
 794                 /* Start the thinnet transceiver. We should really wait 50ms... */
 795                 outw(StartCoax, ioaddr + EL3_CMD);
 796         EL3WINDOW(4);
 797         outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) |
 798              media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);
 799 
 800         /* Switch to the stats window, and clear all stats by reading. */
 801         outw(StatsDisable, ioaddr + EL3_CMD);
 802         EL3WINDOW(6);
 803         for (i = 0; i < 10; i++)
 804                 inb(ioaddr + i);
 805         inw(ioaddr + 10);
 806         inw(ioaddr + 12);
 807         /* New: On the Vortex we must also clear the BadSSD counter. */
 808         EL3WINDOW(4);
 809         inb(ioaddr + 12);
 810         /* ..and on the Boomerang we enable the extra statistics bits. */
 811         outw(0x0040, ioaddr + Wn4_NetDiag);
 812 
 813         /* Switch to register set 7 for normal use. */
 814         EL3WINDOW(7);
 815 
 816         if (vp->full_bus_master_rx) {   /* Boomerang bus master. */
 817                 vp->cur_rx = vp->dirty_rx = 0;
 818                 if (corkscrew_debug > 2)
 819                         pr_debug("%s:  Filling in the Rx ring.\n", dev->name);
 820                 for (i = 0; i < RX_RING_SIZE; i++) {
 821                         struct sk_buff *skb;
 822                         if (i < (RX_RING_SIZE - 1))
 823                                 vp->rx_ring[i].next =
 824                                     isa_virt_to_bus(&vp->rx_ring[i + 1]);
 825                         else
 826                                 vp->rx_ring[i].next = 0;
 827                         vp->rx_ring[i].status = 0;      /* Clear complete bit. */
 828                         vp->rx_ring[i].length = PKT_BUF_SZ | 0x80000000;
 829                         skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
 830                         vp->rx_skbuff[i] = skb;
 831                         if (skb == NULL)
 832                                 break;  /* Bad news!  */
 833                         skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
 834                         vp->rx_ring[i].addr = isa_virt_to_bus(skb->data);
 835                 }
 836                 if (i != 0)
 837                         vp->rx_ring[i - 1].next =
 838                                 isa_virt_to_bus(&vp->rx_ring[0]);       /* Wrap the ring. */
 839                 outl(isa_virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr);
 840         }
 841         if (vp->full_bus_master_tx) {   /* Boomerang bus master Tx. */
 842                 vp->cur_tx = vp->dirty_tx = 0;
 843                 outb(PKT_BUF_SZ >> 8, ioaddr + TxFreeThreshold);        /* Room for a packet. */
 844                 /* Clear the Tx ring. */
 845                 for (i = 0; i < TX_RING_SIZE; i++)
 846                         vp->tx_skbuff[i] = NULL;
 847                 outl(0, ioaddr + DownListPtr);
 848         }
 849         /* Set receiver mode: presumably accept b-case and phys addr only. */
 850         set_rx_mode(dev);
 851         outw(StatsEnable, ioaddr + EL3_CMD);    /* Turn on statistics. */
 852 
 853         netif_start_queue(dev);
 854 
 855         outw(RxEnable, ioaddr + EL3_CMD);       /* Enable the receiver. */
 856         outw(TxEnable, ioaddr + EL3_CMD);       /* Enable transmitter. */
 857         /* Allow status bits to be seen. */
 858         outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull |
 859              (vp->full_bus_master_tx ? DownComplete : TxAvailable) |
 860              (vp->full_bus_master_rx ? UpComplete : RxComplete) |
 861              (vp->bus_master ? DMADone : 0), ioaddr + EL3_CMD);
 862         /* Ack all pending events, and set active indicator mask. */
 863         outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
 864              ioaddr + EL3_CMD);
 865         outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
 866              | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete,
 867              ioaddr + EL3_CMD);
 868 
 869         return 0;
 870 }
 871 
 872 static void corkscrew_timer(struct timer_list *t)
 873 {
 874 #ifdef AUTOMEDIA
 875         struct corkscrew_private *vp = from_timer(vp, t, timer);
 876         struct net_device *dev = vp->our_dev;
 877         int ioaddr = dev->base_addr;
 878         unsigned long flags;
 879         int ok = 0;
 880 
 881         if (corkscrew_debug > 1)
 882                 pr_debug("%s: Media selection timer tick happened, %s.\n",
 883                        dev->name, media_tbl[dev->if_port].name);
 884 
 885         spin_lock_irqsave(&vp->lock, flags);
 886 
 887         {
 888                 int old_window = inw(ioaddr + EL3_CMD) >> 13;
 889                 int media_status;
 890                 EL3WINDOW(4);
 891                 media_status = inw(ioaddr + Wn4_Media);
 892                 switch (dev->if_port) {
 893                 case 0:
 894                 case 4:
 895                 case 5: /* 10baseT, 100baseTX, 100baseFX  */
 896                         if (media_status & Media_LnkBeat) {
 897                                 ok = 1;
 898                                 if (corkscrew_debug > 1)
 899                                         pr_debug("%s: Media %s has link beat, %x.\n",
 900                                                 dev->name,
 901                                                 media_tbl[dev->if_port].name,
 902                                                 media_status);
 903                         } else if (corkscrew_debug > 1)
 904                                 pr_debug("%s: Media %s is has no link beat, %x.\n",
 905                                         dev->name,
 906                                         media_tbl[dev->if_port].name,
 907                                         media_status);
 908 
 909                         break;
 910                 default:        /* Other media types handled by Tx timeouts. */
 911                         if (corkscrew_debug > 1)
 912                                 pr_debug("%s: Media %s is has no indication, %x.\n",
 913                                         dev->name,
 914                                         media_tbl[dev->if_port].name,
 915                                         media_status);
 916                         ok = 1;
 917                 }
 918                 if (!ok) {
 919                         __u32 config;
 920 
 921                         do {
 922                                 dev->if_port =
 923                                     media_tbl[dev->if_port].next;
 924                         }
 925                         while (!(vp->available_media & media_tbl[dev->if_port].mask));
 926 
 927                         if (dev->if_port == 8) {        /* Go back to default. */
 928                                 dev->if_port = vp->default_media;
 929                                 if (corkscrew_debug > 1)
 930                                         pr_debug("%s: Media selection failing, using default %s port.\n",
 931                                                 dev->name,
 932                                                 media_tbl[dev->if_port].name);
 933                         } else {
 934                                 if (corkscrew_debug > 1)
 935                                         pr_debug("%s: Media selection failed, now trying %s port.\n",
 936                                                 dev->name,
 937                                                 media_tbl[dev->if_port].name);
 938                                 vp->timer.expires = jiffies + media_tbl[dev->if_port].wait;
 939                                 add_timer(&vp->timer);
 940                         }
 941                         outw((media_status & ~(Media_10TP | Media_SQE)) |
 942                              media_tbl[dev->if_port].media_bits,
 943                              ioaddr + Wn4_Media);
 944 
 945                         EL3WINDOW(3);
 946                         config = inl(ioaddr + Wn3_Config);
 947                         config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift);
 948                         outl(config, ioaddr + Wn3_Config);
 949 
 950                         outw(dev->if_port == 3 ? StartCoax : StopCoax,
 951                              ioaddr + EL3_CMD);
 952                 }
 953                 EL3WINDOW(old_window);
 954         }
 955 
 956         spin_unlock_irqrestore(&vp->lock, flags);
 957         if (corkscrew_debug > 1)
 958                 pr_debug("%s: Media selection timer finished, %s.\n",
 959                        dev->name, media_tbl[dev->if_port].name);
 960 
 961 #endif                          /* AUTOMEDIA */
 962 }
 963 
 964 static void corkscrew_timeout(struct net_device *dev)
 965 {
 966         int i;
 967         struct corkscrew_private *vp = netdev_priv(dev);
 968         int ioaddr = dev->base_addr;
 969 
 970         pr_warn("%s: transmit timed out, tx_status %2.2x status %4.4x\n",
 971                 dev->name, inb(ioaddr + TxStatus),
 972                 inw(ioaddr + EL3_STATUS));
 973         /* Slight code bloat to be user friendly. */
 974         if ((inb(ioaddr + TxStatus) & 0x88) == 0x88)
 975                 pr_warn("%s: Transmitter encountered 16 collisions -- network cable problem?\n",
 976                         dev->name);
 977 #ifndef final_version
 978         pr_debug("  Flags; bus-master %d, full %d; dirty %d current %d.\n",
 979                vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx,
 980                vp->cur_tx);
 981         pr_debug("  Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr),
 982                &vp->tx_ring[0]);
 983         for (i = 0; i < TX_RING_SIZE; i++) {
 984                 pr_debug("  %d: %p  length %8.8x status %8.8x\n", i,
 985                        &vp->tx_ring[i],
 986                        vp->tx_ring[i].length, vp->tx_ring[i].status);
 987         }
 988 #endif
 989         /* Issue TX_RESET and TX_START commands. */
 990         outw(TxReset, ioaddr + EL3_CMD);
 991         for (i = 20; i >= 0; i--)
 992                 if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
 993                         break;
 994         outw(TxEnable, ioaddr + EL3_CMD);
 995         netif_trans_update(dev); /* prevent tx timeout */
 996         dev->stats.tx_errors++;
 997         dev->stats.tx_dropped++;
 998         netif_wake_queue(dev);
 999 }
1000 
1001 static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb,
1002                                         struct net_device *dev)
1003 {
1004         struct corkscrew_private *vp = netdev_priv(dev);
1005         int ioaddr = dev->base_addr;
1006 
1007         /* Block a timer-based transmit from overlapping. */
1008 
1009         netif_stop_queue(dev);
1010 
1011         if (vp->full_bus_master_tx) {   /* BOOMERANG bus-master */
1012                 /* Calculate the next Tx descriptor entry. */
1013                 int entry = vp->cur_tx % TX_RING_SIZE;
1014                 struct boom_tx_desc *prev_entry;
1015                 unsigned long flags;
1016                 int i;
1017 
1018                 if (vp->tx_full)        /* No room to transmit with */
1019                         return NETDEV_TX_BUSY;
1020                 if (vp->cur_tx != 0)
1021                         prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE];
1022                 else
1023                         prev_entry = NULL;
1024                 if (corkscrew_debug > 3)
1025                         pr_debug("%s: Trying to send a packet, Tx index %d.\n",
1026                                 dev->name, vp->cur_tx);
1027                 /* vp->tx_full = 1; */
1028                 vp->tx_skbuff[entry] = skb;
1029                 vp->tx_ring[entry].next = 0;
1030                 vp->tx_ring[entry].addr = isa_virt_to_bus(skb->data);
1031                 vp->tx_ring[entry].length = skb->len | 0x80000000;
1032                 vp->tx_ring[entry].status = skb->len | 0x80000000;
1033 
1034                 spin_lock_irqsave(&vp->lock, flags);
1035                 outw(DownStall, ioaddr + EL3_CMD);
1036                 /* Wait for the stall to complete. */
1037                 for (i = 20; i >= 0; i--)
1038                         if ((inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0)
1039                                 break;
1040                 if (prev_entry)
1041                         prev_entry->next = isa_virt_to_bus(&vp->tx_ring[entry]);
1042                 if (inl(ioaddr + DownListPtr) == 0) {
1043                         outl(isa_virt_to_bus(&vp->tx_ring[entry]),
1044                              ioaddr + DownListPtr);
1045                         queued_packet++;
1046                 }
1047                 outw(DownUnstall, ioaddr + EL3_CMD);
1048                 spin_unlock_irqrestore(&vp->lock, flags);
1049 
1050                 vp->cur_tx++;
1051                 if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1)
1052                         vp->tx_full = 1;
1053                 else {          /* Clear previous interrupt enable. */
1054                         if (prev_entry)
1055                                 prev_entry->status &= ~0x80000000;
1056                         netif_wake_queue(dev);
1057                 }
1058                 return NETDEV_TX_OK;
1059         }
1060         /* Put out the doubleword header... */
1061         outl(skb->len, ioaddr + TX_FIFO);
1062         dev->stats.tx_bytes += skb->len;
1063 #ifdef VORTEX_BUS_MASTER
1064         if (vp->bus_master) {
1065                 /* Set the bus-master controller to transfer the packet. */
1066                 outl((int) (skb->data), ioaddr + Wn7_MasterAddr);
1067                 outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen);
1068                 vp->tx_skb = skb;
1069                 outw(StartDMADown, ioaddr + EL3_CMD);
1070                 /* queue will be woken at the DMADone interrupt. */
1071         } else {
1072                 /* ... and the packet rounded to a doubleword. */
1073                 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
1074                 dev_kfree_skb(skb);
1075                 if (inw(ioaddr + TxFree) > 1536) {
1076                         netif_wake_queue(dev);
1077                 } else
1078                         /* Interrupt us when the FIFO has room for max-sized packet. */
1079                         outw(SetTxThreshold + (1536 >> 2),
1080                              ioaddr + EL3_CMD);
1081         }
1082 #else
1083         /* ... and the packet rounded to a doubleword. */
1084         outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
1085         dev_kfree_skb(skb);
1086         if (inw(ioaddr + TxFree) > 1536) {
1087                 netif_wake_queue(dev);
1088         } else
1089                 /* Interrupt us when the FIFO has room for max-sized packet. */
1090                 outw(SetTxThreshold + (1536 >> 2), ioaddr + EL3_CMD);
1091 #endif                          /* bus master */
1092 
1093 
1094         /* Clear the Tx status stack. */
1095         {
1096                 short tx_status;
1097                 int i = 4;
1098 
1099                 while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) {
1100                         if (tx_status & 0x3C) { /* A Tx-disabling error occurred.  */
1101                                 if (corkscrew_debug > 2)
1102                                         pr_debug("%s: Tx error, status %2.2x.\n",
1103                                                 dev->name, tx_status);
1104                                 if (tx_status & 0x04)
1105                                         dev->stats.tx_fifo_errors++;
1106                                 if (tx_status & 0x38)
1107                                         dev->stats.tx_aborted_errors++;
1108                                 if (tx_status & 0x30) {
1109                                         int j;
1110                                         outw(TxReset, ioaddr + EL3_CMD);
1111                                         for (j = 20; j >= 0; j--)
1112                                                 if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
1113                                                         break;
1114                                 }
1115                                 outw(TxEnable, ioaddr + EL3_CMD);
1116                         }
1117                         outb(0x00, ioaddr + TxStatus);  /* Pop the status stack. */
1118                 }
1119         }
1120         return NETDEV_TX_OK;
1121 }
1122 
1123 /* The interrupt handler does all of the Rx thread work and cleans up
1124    after the Tx thread. */
1125 
1126 static irqreturn_t corkscrew_interrupt(int irq, void *dev_id)
1127 {
1128         /* Use the now-standard shared IRQ implementation. */
1129         struct net_device *dev = dev_id;
1130         struct corkscrew_private *lp = netdev_priv(dev);
1131         int ioaddr, status;
1132         int latency;
1133         int i = max_interrupt_work;
1134 
1135         ioaddr = dev->base_addr;
1136         latency = inb(ioaddr + Timer);
1137 
1138         spin_lock(&lp->lock);
1139 
1140         status = inw(ioaddr + EL3_STATUS);
1141 
1142         if (corkscrew_debug > 4)
1143                 pr_debug("%s: interrupt, status %4.4x, timer %d.\n",
1144                         dev->name, status, latency);
1145         if ((status & 0xE000) != 0xE000) {
1146                 static int donedidthis;
1147                 /* Some interrupt controllers store a bogus interrupt from boot-time.
1148                    Ignore a single early interrupt, but don't hang the machine for
1149                    other interrupt problems. */
1150                 if (donedidthis++ > 100) {
1151                         pr_err("%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n",
1152                                    dev->name, status, netif_running(dev));
1153                         free_irq(dev->irq, dev);
1154                         dev->irq = -1;
1155                 }
1156         }
1157 
1158         do {
1159                 if (corkscrew_debug > 5)
1160                         pr_debug("%s: In interrupt loop, status %4.4x.\n",
1161                                dev->name, status);
1162                 if (status & RxComplete)
1163                         corkscrew_rx(dev);
1164 
1165                 if (status & TxAvailable) {
1166                         if (corkscrew_debug > 5)
1167                                 pr_debug("      TX room bit was handled.\n");
1168                         /* There's room in the FIFO for a full-sized packet. */
1169                         outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
1170                         netif_wake_queue(dev);
1171                 }
1172                 if (status & DownComplete) {
1173                         unsigned int dirty_tx = lp->dirty_tx;
1174 
1175                         while (lp->cur_tx - dirty_tx > 0) {
1176                                 int entry = dirty_tx % TX_RING_SIZE;
1177                                 if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry]))
1178                                         break;  /* It still hasn't been processed. */
1179                                 if (lp->tx_skbuff[entry]) {
1180                                         dev_consume_skb_irq(lp->tx_skbuff[entry]);
1181                                         lp->tx_skbuff[entry] = NULL;
1182                                 }
1183                                 dirty_tx++;
1184                         }
1185                         lp->dirty_tx = dirty_tx;
1186                         outw(AckIntr | DownComplete, ioaddr + EL3_CMD);
1187                         if (lp->tx_full && (lp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) {
1188                                 lp->tx_full = 0;
1189                                 netif_wake_queue(dev);
1190                         }
1191                 }
1192 #ifdef VORTEX_BUS_MASTER
1193                 if (status & DMADone) {
1194                         outw(0x1000, ioaddr + Wn7_MasterStatus);        /* Ack the event. */
1195                         dev_consume_skb_irq(lp->tx_skb);        /* Release the transferred buffer */
1196                         netif_wake_queue(dev);
1197                 }
1198 #endif
1199                 if (status & UpComplete) {
1200                         boomerang_rx(dev);
1201                         outw(AckIntr | UpComplete, ioaddr + EL3_CMD);
1202                 }
1203                 if (status & (AdapterFailure | RxEarly | StatsFull)) {
1204                         /* Handle all uncommon interrupts at once. */
1205                         if (status & RxEarly) { /* Rx early is unused. */
1206                                 corkscrew_rx(dev);
1207                                 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
1208                         }
1209                         if (status & StatsFull) {       /* Empty statistics. */
1210                                 static int DoneDidThat;
1211                                 if (corkscrew_debug > 4)
1212                                         pr_debug("%s: Updating stats.\n", dev->name);
1213                                 update_stats(ioaddr, dev);
1214                                 /* DEBUG HACK: Disable statistics as an interrupt source. */
1215                                 /* This occurs when we have the wrong media type! */
1216                                 if (DoneDidThat == 0 && inw(ioaddr + EL3_STATUS) & StatsFull) {
1217                                         int win, reg;
1218                                         pr_notice("%s: Updating stats failed, disabling stats as an interrupt source.\n",
1219                                                 dev->name);
1220                                         for (win = 0; win < 8; win++) {
1221                                                 EL3WINDOW(win);
1222                                                 pr_notice("Vortex window %d:", win);
1223                                                 for (reg = 0; reg < 16; reg++)
1224                                                         pr_cont(" %2.2x", inb(ioaddr + reg));
1225                                                 pr_cont("\n");
1226                                         }
1227                                         EL3WINDOW(7);
1228                                         outw(SetIntrEnb | TxAvailable |
1229                                              RxComplete | AdapterFailure |
1230                                              UpComplete | DownComplete |
1231                                              TxComplete, ioaddr + EL3_CMD);
1232                                         DoneDidThat++;
1233                                 }
1234                         }
1235                         if (status & AdapterFailure) {
1236                                 /* Adapter failure requires Rx reset and reinit. */
1237                                 outw(RxReset, ioaddr + EL3_CMD);
1238                                 /* Set the Rx filter to the current state. */
1239                                 set_rx_mode(dev);
1240                                 outw(RxEnable, ioaddr + EL3_CMD);       /* Re-enable the receiver. */
1241                                 outw(AckIntr | AdapterFailure,
1242                                      ioaddr + EL3_CMD);
1243                         }
1244                 }
1245 
1246                 if (--i < 0) {
1247                         pr_err("%s: Too much work in interrupt, status %4.4x. Disabling functions (%4.4x).\n",
1248                                 dev->name, status, SetStatusEnb | ((~status) & 0x7FE));
1249                         /* Disable all pending interrupts. */
1250                         outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD);
1251                         outw(AckIntr | 0x7FF, ioaddr + EL3_CMD);
1252                         break;
1253                 }
1254                 /* Acknowledge the IRQ. */
1255                 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
1256 
1257         } while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete));
1258 
1259         spin_unlock(&lp->lock);
1260 
1261         if (corkscrew_debug > 4)
1262                 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name, status);
1263         return IRQ_HANDLED;
1264 }
1265 
1266 static int corkscrew_rx(struct net_device *dev)
1267 {
1268         int ioaddr = dev->base_addr;
1269         int i;
1270         short rx_status;
1271 
1272         if (corkscrew_debug > 5)
1273                 pr_debug("   In rx_packet(), status %4.4x, rx_status %4.4x.\n",
1274                      inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus));
1275         while ((rx_status = inw(ioaddr + RxStatus)) > 0) {
1276                 if (rx_status & 0x4000) {       /* Error, update stats. */
1277                         unsigned char rx_error = inb(ioaddr + RxErrors);
1278                         if (corkscrew_debug > 2)
1279                                 pr_debug(" Rx error: status %2.2x.\n",
1280                                        rx_error);
1281                         dev->stats.rx_errors++;
1282                         if (rx_error & 0x01)
1283                                 dev->stats.rx_over_errors++;
1284                         if (rx_error & 0x02)
1285                                 dev->stats.rx_length_errors++;
1286                         if (rx_error & 0x04)
1287                                 dev->stats.rx_frame_errors++;
1288                         if (rx_error & 0x08)
1289                                 dev->stats.rx_crc_errors++;
1290                         if (rx_error & 0x10)
1291                                 dev->stats.rx_length_errors++;
1292                 } else {
1293                         /* The packet length: up to 4.5K!. */
1294                         short pkt_len = rx_status & 0x1fff;
1295                         struct sk_buff *skb;
1296 
1297                         skb = netdev_alloc_skb(dev, pkt_len + 5 + 2);
1298                         if (corkscrew_debug > 4)
1299                                 pr_debug("Receiving packet size %d status %4.4x.\n",
1300                                      pkt_len, rx_status);
1301                         if (skb != NULL) {
1302                                 skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
1303                                 /* 'skb_put()' points to the start of sk_buff data area. */
1304                                 insl(ioaddr + RX_FIFO,
1305                                      skb_put(skb, pkt_len),
1306                                      (pkt_len + 3) >> 2);
1307                                 outw(RxDiscard, ioaddr + EL3_CMD);      /* Pop top Rx packet. */
1308                                 skb->protocol = eth_type_trans(skb, dev);
1309                                 netif_rx(skb);
1310                                 dev->stats.rx_packets++;
1311                                 dev->stats.rx_bytes += pkt_len;
1312                                 /* Wait a limited time to go to next packet. */
1313                                 for (i = 200; i >= 0; i--)
1314                                         if (! (inw(ioaddr + EL3_STATUS) & CmdInProgress))
1315                                                 break;
1316                                 continue;
1317                         } else if (corkscrew_debug)
1318                                 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, pkt_len);
1319                 }
1320                 outw(RxDiscard, ioaddr + EL3_CMD);
1321                 dev->stats.rx_dropped++;
1322                 /* Wait a limited time to skip this packet. */
1323                 for (i = 200; i >= 0; i--)
1324                         if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
1325                                 break;
1326         }
1327         return 0;
1328 }
1329 
1330 static int boomerang_rx(struct net_device *dev)
1331 {
1332         struct corkscrew_private *vp = netdev_priv(dev);
1333         int entry = vp->cur_rx % RX_RING_SIZE;
1334         int ioaddr = dev->base_addr;
1335         int rx_status;
1336 
1337         if (corkscrew_debug > 5)
1338                 pr_debug("   In boomerang_rx(), status %4.4x, rx_status %4.4x.\n",
1339                         inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus));
1340         while ((rx_status = vp->rx_ring[entry].status) & RxDComplete) {
1341                 if (rx_status & RxDError) {     /* Error, update stats. */
1342                         unsigned char rx_error = rx_status >> 16;
1343                         if (corkscrew_debug > 2)
1344                                 pr_debug(" Rx error: status %2.2x.\n",
1345                                        rx_error);
1346                         dev->stats.rx_errors++;
1347                         if (rx_error & 0x01)
1348                                 dev->stats.rx_over_errors++;
1349                         if (rx_error & 0x02)
1350                                 dev->stats.rx_length_errors++;
1351                         if (rx_error & 0x04)
1352                                 dev->stats.rx_frame_errors++;
1353                         if (rx_error & 0x08)
1354                                 dev->stats.rx_crc_errors++;
1355                         if (rx_error & 0x10)
1356                                 dev->stats.rx_length_errors++;
1357                 } else {
1358                         /* The packet length: up to 4.5K!. */
1359                         short pkt_len = rx_status & 0x1fff;
1360                         struct sk_buff *skb;
1361 
1362                         dev->stats.rx_bytes += pkt_len;
1363                         if (corkscrew_debug > 4)
1364                                 pr_debug("Receiving packet size %d status %4.4x.\n",
1365                                      pkt_len, rx_status);
1366 
1367                         /* Check if the packet is long enough to just accept without
1368                            copying to a properly sized skbuff. */
1369                         if (pkt_len < rx_copybreak &&
1370                             (skb = netdev_alloc_skb(dev, pkt_len + 4)) != NULL) {
1371                                 skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
1372                                 /* 'skb_put()' points to the start of sk_buff data area. */
1373                                 skb_put_data(skb,
1374                                              isa_bus_to_virt(vp->rx_ring[entry].addr),
1375                                              pkt_len);
1376                                 rx_copy++;
1377                         } else {
1378                                 void *temp;
1379                                 /* Pass up the skbuff already on the Rx ring. */
1380                                 skb = vp->rx_skbuff[entry];
1381                                 vp->rx_skbuff[entry] = NULL;
1382                                 temp = skb_put(skb, pkt_len);
1383                                 /* Remove this checking code for final release. */
1384                                 if (isa_bus_to_virt(vp->rx_ring[entry].addr) != temp)
1385                                         pr_warn("%s: Warning -- the skbuff addresses do not match in boomerang_rx: %p vs. %p / %p\n",
1386                                                 dev->name,
1387                                                 isa_bus_to_virt(vp->rx_ring[entry].addr),
1388                                                 skb->head, temp);
1389                                 rx_nocopy++;
1390                         }
1391                         skb->protocol = eth_type_trans(skb, dev);
1392                         netif_rx(skb);
1393                         dev->stats.rx_packets++;
1394                 }
1395                 entry = (++vp->cur_rx) % RX_RING_SIZE;
1396         }
1397         /* Refill the Rx ring buffers. */
1398         for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) {
1399                 struct sk_buff *skb;
1400                 entry = vp->dirty_rx % RX_RING_SIZE;
1401                 if (vp->rx_skbuff[entry] == NULL) {
1402                         skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
1403                         if (skb == NULL)
1404                                 break;  /* Bad news!  */
1405                         skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
1406                         vp->rx_ring[entry].addr = isa_virt_to_bus(skb->data);
1407                         vp->rx_skbuff[entry] = skb;
1408                 }
1409                 vp->rx_ring[entry].status = 0;  /* Clear complete bit. */
1410         }
1411         return 0;
1412 }
1413 
1414 static int corkscrew_close(struct net_device *dev)
1415 {
1416         struct corkscrew_private *vp = netdev_priv(dev);
1417         int ioaddr = dev->base_addr;
1418         int i;
1419 
1420         netif_stop_queue(dev);
1421 
1422         if (corkscrew_debug > 1) {
1423                 pr_debug("%s: corkscrew_close() status %4.4x, Tx status %2.2x.\n",
1424                      dev->name, inw(ioaddr + EL3_STATUS),
1425                      inb(ioaddr + TxStatus));
1426                 pr_debug("%s: corkscrew close stats: rx_nocopy %d rx_copy %d tx_queued %d.\n",
1427                         dev->name, rx_nocopy, rx_copy, queued_packet);
1428         }
1429 
1430         del_timer_sync(&vp->timer);
1431 
1432         /* Turn off statistics ASAP.  We update lp->stats below. */
1433         outw(StatsDisable, ioaddr + EL3_CMD);
1434 
1435         /* Disable the receiver and transmitter. */
1436         outw(RxDisable, ioaddr + EL3_CMD);
1437         outw(TxDisable, ioaddr + EL3_CMD);
1438 
1439         if (dev->if_port == XCVR_10base2)
1440                 /* Turn off thinnet power.  Green! */
1441                 outw(StopCoax, ioaddr + EL3_CMD);
1442 
1443         free_irq(dev->irq, dev);
1444 
1445         outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1446 
1447         update_stats(ioaddr, dev);
1448         if (vp->full_bus_master_rx) {   /* Free Boomerang bus master Rx buffers. */
1449                 outl(0, ioaddr + UpListPtr);
1450                 for (i = 0; i < RX_RING_SIZE; i++)
1451                         if (vp->rx_skbuff[i]) {
1452                                 dev_kfree_skb(vp->rx_skbuff[i]);
1453                                 vp->rx_skbuff[i] = NULL;
1454                         }
1455         }
1456         if (vp->full_bus_master_tx) {   /* Free Boomerang bus master Tx buffers. */
1457                 outl(0, ioaddr + DownListPtr);
1458                 for (i = 0; i < TX_RING_SIZE; i++)
1459                         if (vp->tx_skbuff[i]) {
1460                                 dev_kfree_skb(vp->tx_skbuff[i]);
1461                                 vp->tx_skbuff[i] = NULL;
1462                         }
1463         }
1464 
1465         return 0;
1466 }
1467 
1468 static struct net_device_stats *corkscrew_get_stats(struct net_device *dev)
1469 {
1470         struct corkscrew_private *vp = netdev_priv(dev);
1471         unsigned long flags;
1472 
1473         if (netif_running(dev)) {
1474                 spin_lock_irqsave(&vp->lock, flags);
1475                 update_stats(dev->base_addr, dev);
1476                 spin_unlock_irqrestore(&vp->lock, flags);
1477         }
1478         return &dev->stats;
1479 }
1480 
1481 /*  Update statistics.
1482         Unlike with the EL3 we need not worry about interrupts changing
1483         the window setting from underneath us, but we must still guard
1484         against a race condition with a StatsUpdate interrupt updating the
1485         table.  This is done by checking that the ASM (!) code generated uses
1486         atomic updates with '+='.
1487         */
1488 static void update_stats(int ioaddr, struct net_device *dev)
1489 {
1490         /* Unlike the 3c5x9 we need not turn off stats updates while reading. */
1491         /* Switch to the stats window, and read everything. */
1492         EL3WINDOW(6);
1493         dev->stats.tx_carrier_errors += inb(ioaddr + 0);
1494         dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1495         /* Multiple collisions. */ inb(ioaddr + 2);
1496         dev->stats.collisions += inb(ioaddr + 3);
1497         dev->stats.tx_window_errors += inb(ioaddr + 4);
1498         dev->stats.rx_fifo_errors += inb(ioaddr + 5);
1499         dev->stats.tx_packets += inb(ioaddr + 6);
1500         dev->stats.tx_packets += (inb(ioaddr + 9) & 0x30) << 4;
1501                                                 /* Rx packets   */ inb(ioaddr + 7);
1502                                                 /* Must read to clear */
1503         /* Tx deferrals */ inb(ioaddr + 8);
1504         /* Don't bother with register 9, an extension of registers 6&7.
1505            If we do use the 6&7 values the atomic update assumption above
1506            is invalid. */
1507         inw(ioaddr + 10);       /* Total Rx and Tx octets. */
1508         inw(ioaddr + 12);
1509         /* New: On the Vortex we must also clear the BadSSD counter. */
1510         EL3WINDOW(4);
1511         inb(ioaddr + 12);
1512 
1513         /* We change back to window 7 (not 1) with the Vortex. */
1514         EL3WINDOW(7);
1515 }
1516 
1517 /* This new version of set_rx_mode() supports v1.4 kernels.
1518    The Vortex chip has no documented multicast filter, so the only
1519    multicast setting is to receive all multicast frames.  At least
1520    the chip has a very clean way to set the mode, unlike many others. */
1521 static void set_rx_mode(struct net_device *dev)
1522 {
1523         int ioaddr = dev->base_addr;
1524         unsigned short new_mode;
1525 
1526         if (dev->flags & IFF_PROMISC) {
1527                 if (corkscrew_debug > 3)
1528                         pr_debug("%s: Setting promiscuous mode.\n",
1529                                dev->name);
1530                 new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm;
1531         } else if (!netdev_mc_empty(dev) || dev->flags & IFF_ALLMULTI) {
1532                 new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast;
1533         } else
1534                 new_mode = SetRxFilter | RxStation | RxBroadcast;
1535 
1536         outw(new_mode, ioaddr + EL3_CMD);
1537 }
1538 
1539 static void netdev_get_drvinfo(struct net_device *dev,
1540                                struct ethtool_drvinfo *info)
1541 {
1542         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1543         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1544         snprintf(info->bus_info, sizeof(info->bus_info), "ISA 0x%lx",
1545                  dev->base_addr);
1546 }
1547 
1548 static u32 netdev_get_msglevel(struct net_device *dev)
1549 {
1550         return corkscrew_debug;
1551 }
1552 
1553 static void netdev_set_msglevel(struct net_device *dev, u32 level)
1554 {
1555         corkscrew_debug = level;
1556 }
1557 
1558 static const struct ethtool_ops netdev_ethtool_ops = {
1559         .get_drvinfo            = netdev_get_drvinfo,
1560         .get_msglevel           = netdev_get_msglevel,
1561         .set_msglevel           = netdev_set_msglevel,
1562 };
1563 
1564 
1565 #ifdef MODULE
1566 void cleanup_module(void)
1567 {
1568         while (!list_empty(&root_corkscrew_dev)) {
1569                 struct net_device *dev;
1570                 struct corkscrew_private *vp;
1571 
1572                 vp = list_entry(root_corkscrew_dev.next,
1573                                 struct corkscrew_private, list);
1574                 dev = vp->our_dev;
1575                 unregister_netdev(dev);
1576                 cleanup_card(dev);
1577                 free_netdev(dev);
1578         }
1579 }
1580 #endif                          /* MODULE */
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root/drivers/net/ethernet/3com/3c515.c

DEFINITIONS
