drivers/net/ethernet/amd/atarilance.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
slow_memcpy
atarilance_probe
addr_accessible
lance_probe1
lance_open
lance_init_ring
lance_tx_timeout
lance_start_xmit
lance_interrupt
lance_rx
lance_close
set_multicast_list
lance_set_mac_address
atarilance_module_init
atarilance_module_exit
   1 /* atarilance.c: Ethernet driver for VME Lance cards on the Atari */
   2 /*
   3         Written 1995/96 by Roman Hodek (Roman.Hodek@informatik.uni-erlangen.de)
   4 
   5         This software may be used and distributed according to the terms
   6         of the GNU General Public License, incorporated herein by reference.
   7 
   8         This drivers was written with the following sources of reference:
   9          - The driver for the Riebl Lance card by the TU Vienna.
  10          - The modified TUW driver for PAM's VME cards
  11          - The PC-Linux driver for Lance cards (but this is for bus master
  12        cards, not the shared memory ones)
  13          - The Amiga Ariadne driver
  14 
  15         v1.0: (in 1.2.13pl4/0.9.13)
  16               Initial version
  17         v1.1: (in 1.2.13pl5)
  18               more comments
  19                   deleted some debugging stuff
  20                   optimized register access (keep AREG pointing to CSR0)
  21                   following AMD, CSR0_STRT should be set only after IDON is detected
  22                   use memcpy() for data transfers, that also employs long word moves
  23                   better probe procedure for 24-bit systems
  24           non-VME-RieblCards need extra delays in memcpy
  25                   must also do write test, since 0xfxe00000 may hit ROM
  26                   use 8/32 tx/rx buffers, which should give better NFS performance;
  27                     this is made possible by shifting the last packet buffer after the
  28                     RieblCard reserved area
  29     v1.2: (in 1.2.13pl8)
  30               again fixed probing for the Falcon; 0xfe01000 hits phys. 0x00010000
  31                   and thus RAM, in case of no Lance found all memory contents have to
  32                   be restored!
  33                   Now possible to compile as module.
  34         v1.3: 03/30/96 Jes Sorensen, Roman (in 1.3)
  35               Several little 1.3 adaptions
  36                   When the lance is stopped it jumps back into little-endian
  37                   mode. It is therefore necessary to put it back where it
  38                   belongs, in big endian mode, in order to make things work.
  39                   This might be the reason why multicast-mode didn't work
  40                   before, but I'm not able to test it as I only got an Amiga
  41                   (we had similar problems with the A2065 driver).
  42 
  43 */
  44 
  45 static const char version[] = "atarilance.c: v1.3 04/04/96 "
  46                               "Roman.Hodek@informatik.uni-erlangen.de\n";
  47 
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include <linux/module.h>
  51 #include <linux/stddef.h>
  52 #include <linux/kernel.h>
  53 #include <linux/string.h>
  54 #include <linux/errno.h>
  55 #include <linux/skbuff.h>
  56 #include <linux/interrupt.h>
  57 #include <linux/init.h>
  58 #include <linux/bitops.h>
  59 
  60 #include <asm/setup.h>
  61 #include <asm/irq.h>
  62 #include <asm/atarihw.h>
  63 #include <asm/atariints.h>
  64 #include <asm/io.h>
  65 
  66 /* Debug level:
  67  *  0 = silent, print only serious errors
  68  *  1 = normal, print error messages
  69  *  2 = debug, print debug infos
  70  *  3 = debug, print even more debug infos (packet data)
  71  */
  72 
  73 #define LANCE_DEBUG     1
  74 
  75 #ifdef LANCE_DEBUG
  76 static int lance_debug = LANCE_DEBUG;
  77 #else
  78 static int lance_debug = 1;
  79 #endif
  80 module_param(lance_debug, int, 0);
  81 MODULE_PARM_DESC(lance_debug, "atarilance debug level (0-3)");
  82 MODULE_LICENSE("GPL");
  83 
  84 /* Print debug messages on probing? */
  85 #undef LANCE_DEBUG_PROBE
  86 
  87 #define DPRINTK(n,a)                                                    \
  88         do {                                                                            \
  89                 if (lance_debug >= n)                                   \
  90                         printk a;                                                       \
  91         } while( 0 )
  92 
  93 #ifdef LANCE_DEBUG_PROBE
  94 # define PROBE_PRINT(a) printk a
  95 #else
  96 # define PROBE_PRINT(a)
  97 #endif
  98 
  99 /* These define the number of Rx and Tx buffers as log2. (Only powers
 100  * of two are valid)
 101  * Much more rx buffers (32) are reserved than tx buffers (8), since receiving
 102  * is more time critical then sending and packets may have to remain in the
 103  * board's memory when main memory is low.
 104  */
 105 
 106 #define TX_LOG_RING_SIZE                        3
 107 #define RX_LOG_RING_SIZE                        5
 108 
 109 /* These are the derived values */
 110 
 111 #define TX_RING_SIZE                    (1 << TX_LOG_RING_SIZE)
 112 #define TX_RING_LEN_BITS                (TX_LOG_RING_SIZE << 5)
 113 #define TX_RING_MOD_MASK                (TX_RING_SIZE - 1)
 114 
 115 #define RX_RING_SIZE                    (1 << RX_LOG_RING_SIZE)
 116 #define RX_RING_LEN_BITS                (RX_LOG_RING_SIZE << 5)
 117 #define RX_RING_MOD_MASK                (RX_RING_SIZE - 1)
 118 
 119 #define TX_TIMEOUT      (HZ/5)
 120 
 121 /* The LANCE Rx and Tx ring descriptors. */
 122 struct lance_rx_head {
 123         unsigned short                  base;           /* Low word of base addr */
 124         volatile unsigned char  flag;
 125         unsigned char                   base_hi;        /* High word of base addr (unused) */
 126         short                                   buf_length;     /* This length is 2s complement! */
 127         volatile short                  msg_length;     /* This length is "normal". */
 128 };
 129 
 130 struct lance_tx_head {
 131         unsigned short                  base;           /* Low word of base addr */
 132         volatile unsigned char  flag;
 133         unsigned char                   base_hi;        /* High word of base addr (unused) */
 134         short                                   length;         /* Length is 2s complement! */
 135         volatile short                  misc;
 136 };
 137 
 138 struct ringdesc {
 139         unsigned short  adr_lo;         /* Low 16 bits of address */
 140         unsigned char   len;            /* Length bits */
 141         unsigned char   adr_hi;         /* High 8 bits of address (unused) */
 142 };
 143 
 144 /* The LANCE initialization block, described in databook. */
 145 struct lance_init_block {
 146         unsigned short  mode;           /* Pre-set mode */
 147         unsigned char   hwaddr[6];      /* Physical ethernet address */
 148         unsigned                filter[2];      /* Multicast filter (unused). */
 149         /* Receive and transmit ring base, along with length bits. */
 150         struct ringdesc rx_ring;
 151         struct ringdesc tx_ring;
 152 };
 153 
 154 /* The whole layout of the Lance shared memory */
 155 struct lance_memory {
 156         struct lance_init_block init;
 157         struct lance_tx_head    tx_head[TX_RING_SIZE];
 158         struct lance_rx_head    rx_head[RX_RING_SIZE];
 159         char                                    packet_area[0]; /* packet data follow after the
 160                                                                                          * init block and the ring
 161                                                                                          * descriptors and are located
 162                                                                                          * at runtime */
 163 };
 164 
 165 /* RieblCard specifics:
 166  * The original TOS driver for these cards reserves the area from offset
 167  * 0xee70 to 0xeebb for storing configuration data. Of interest to us is the
 168  * Ethernet address there, and the magic for verifying the data's validity.
 169  * The reserved area isn't touch by packet buffers. Furthermore, offset 0xfffe
 170  * is reserved for the interrupt vector number.
 171  */
 172 #define RIEBL_RSVD_START        0xee70
 173 #define RIEBL_RSVD_END          0xeec0
 174 #define RIEBL_MAGIC                     0x09051990
 175 #define RIEBL_MAGIC_ADDR        ((unsigned long *)(((char *)MEM) + 0xee8a))
 176 #define RIEBL_HWADDR_ADDR       ((unsigned char *)(((char *)MEM) + 0xee8e))
 177 #define RIEBL_IVEC_ADDR         ((unsigned short *)(((char *)MEM) + 0xfffe))
 178 
 179 /* This is a default address for the old RieblCards without a battery
 180  * that have no ethernet address at boot time. 00:00:36:04 is the
 181  * prefix for Riebl cards, the 00:00 at the end is arbitrary.
 182  */
 183 
 184 static unsigned char OldRieblDefHwaddr[6] = {
 185         0x00, 0x00, 0x36, 0x04, 0x00, 0x00
 186 };
 187 
 188 
 189 /* I/O registers of the Lance chip */
 190 
 191 struct lance_ioreg {
 192 /* base+0x0 */  volatile unsigned short data;
 193 /* base+0x2 */  volatile unsigned short addr;
 194                                 unsigned char                   _dummy1[3];
 195 /* base+0x7 */  volatile unsigned char  ivec;
 196                                 unsigned char                   _dummy2[5];
 197 /* base+0xd */  volatile unsigned char  eeprom;
 198                                 unsigned char                   _dummy3;
 199 /* base+0xf */  volatile unsigned char  mem;
 200 };
 201 
 202 /* Types of boards this driver supports */
 203 
 204 enum lance_type {
 205         OLD_RIEBL,              /* old Riebl card without battery */
 206         NEW_RIEBL,              /* new Riebl card with battery */
 207         PAM_CARD                /* PAM card with EEPROM */
 208 };
 209 
 210 static char *lance_names[] = {
 211         "Riebl-Card (without battery)",
 212         "Riebl-Card (with battery)",
 213         "PAM intern card"
 214 };
 215 
 216 /* The driver's private device structure */
 217 
 218 struct lance_private {
 219         enum lance_type         cardtype;
 220         struct lance_ioreg      *iobase;
 221         struct lance_memory     *mem;
 222         int                     cur_rx, cur_tx; /* The next free ring entry */
 223         int                     dirty_tx;               /* Ring entries to be freed. */
 224                                 /* copy function */
 225         void                    *(*memcpy_f)( void *, const void *, size_t );
 226 /* This must be long for set_bit() */
 227         long                    tx_full;
 228         spinlock_t              devlock;
 229 };
 230 
 231 /* I/O register access macros */
 232 
 233 #define MEM             lp->mem
 234 #define DREG    IO->data
 235 #define AREG    IO->addr
 236 #define REGA(a) (*( AREG = (a), &DREG ))
 237 
 238 /* Definitions for packet buffer access: */
 239 #define PKT_BUF_SZ              1544
 240 /* Get the address of a packet buffer corresponding to a given buffer head */
 241 #define PKTBUF_ADDR(head)       (((unsigned char *)(MEM)) + (head)->base)
 242 
 243 /* Possible memory/IO addresses for probing */
 244 
 245 static struct lance_addr {
 246         unsigned long   memaddr;
 247         unsigned long   ioaddr;
 248         int                             slow_flag;
 249 } lance_addr_list[] = {
 250         { 0xfe010000, 0xfe00fff0, 0 },  /* RieblCard VME in TT */
 251         { 0xffc10000, 0xffc0fff0, 0 },  /* RieblCard VME in MegaSTE
 252                                                                            (highest byte stripped) */
 253         { 0xffe00000, 0xffff7000, 1 },  /* RieblCard in ST
 254                                                                            (highest byte stripped) */
 255         { 0xffd00000, 0xffff7000, 1 },  /* RieblCard in ST with hw modif. to
 256                                                                            avoid conflict with ROM
 257                                                                            (highest byte stripped) */
 258         { 0xffcf0000, 0xffcffff0, 0 },  /* PAMCard VME in TT and MSTE
 259                                                                            (highest byte stripped) */
 260         { 0xfecf0000, 0xfecffff0, 0 },  /* Rhotron's PAMCard VME in TT and MSTE
 261                                                                            (highest byte stripped) */
 262 };
 263 
 264 #define N_LANCE_ADDR    ARRAY_SIZE(lance_addr_list)
 265 
 266 
 267 /* Definitions for the Lance */
 268 
 269 /* tx_head flags */
 270 #define TMD1_ENP                0x01    /* end of packet */
 271 #define TMD1_STP                0x02    /* start of packet */
 272 #define TMD1_DEF                0x04    /* deferred */
 273 #define TMD1_ONE                0x08    /* one retry needed */
 274 #define TMD1_MORE               0x10    /* more than one retry needed */
 275 #define TMD1_ERR                0x40    /* error summary */
 276 #define TMD1_OWN                0x80    /* ownership (set: chip owns) */
 277 
 278 #define TMD1_OWN_CHIP   TMD1_OWN
 279 #define TMD1_OWN_HOST   0
 280 
 281 /* tx_head misc field */
 282 #define TMD3_TDR                0x03FF  /* Time Domain Reflectometry counter */
 283 #define TMD3_RTRY               0x0400  /* failed after 16 retries */
 284 #define TMD3_LCAR               0x0800  /* carrier lost */
 285 #define TMD3_LCOL               0x1000  /* late collision */
 286 #define TMD3_UFLO               0x4000  /* underflow (late memory) */
 287 #define TMD3_BUFF               0x8000  /* buffering error (no ENP) */
 288 
 289 /* rx_head flags */
 290 #define RMD1_ENP                0x01    /* end of packet */
 291 #define RMD1_STP                0x02    /* start of packet */
 292 #define RMD1_BUFF               0x04    /* buffer error */
 293 #define RMD1_CRC                0x08    /* CRC error */
 294 #define RMD1_OFLO               0x10    /* overflow */
 295 #define RMD1_FRAM               0x20    /* framing error */
 296 #define RMD1_ERR                0x40    /* error summary */
 297 #define RMD1_OWN                0x80    /* ownership (set: ship owns) */
 298 
 299 #define RMD1_OWN_CHIP   RMD1_OWN
 300 #define RMD1_OWN_HOST   0
 301 
 302 /* register names */
 303 #define CSR0    0               /* mode/status */
 304 #define CSR1    1               /* init block addr (low) */
 305 #define CSR2    2               /* init block addr (high) */
 306 #define CSR3    3               /* misc */
 307 #define CSR8    8               /* address filter */
 308 #define CSR15   15              /* promiscuous mode */
 309 
 310 /* CSR0 */
 311 /* (R=readable, W=writeable, S=set on write, C=clear on write) */
 312 #define CSR0_INIT       0x0001          /* initialize (RS) */
 313 #define CSR0_STRT       0x0002          /* start (RS) */
 314 #define CSR0_STOP       0x0004          /* stop (RS) */
 315 #define CSR0_TDMD       0x0008          /* transmit demand (RS) */
 316 #define CSR0_TXON       0x0010          /* transmitter on (R) */
 317 #define CSR0_RXON       0x0020          /* receiver on (R) */
 318 #define CSR0_INEA       0x0040          /* interrupt enable (RW) */
 319 #define CSR0_INTR       0x0080          /* interrupt active (R) */
 320 #define CSR0_IDON       0x0100          /* initialization done (RC) */
 321 #define CSR0_TINT       0x0200          /* transmitter interrupt (RC) */
 322 #define CSR0_RINT       0x0400          /* receiver interrupt (RC) */
 323 #define CSR0_MERR       0x0800          /* memory error (RC) */
 324 #define CSR0_MISS       0x1000          /* missed frame (RC) */
 325 #define CSR0_CERR       0x2000          /* carrier error (no heartbeat :-) (RC) */
 326 #define CSR0_BABL       0x4000          /* babble: tx-ed too many bits (RC) */
 327 #define CSR0_ERR        0x8000          /* error (RC) */
 328 
 329 /* CSR3 */
 330 #define CSR3_BCON       0x0001          /* byte control */
 331 #define CSR3_ACON       0x0002          /* ALE control */
 332 #define CSR3_BSWP       0x0004          /* byte swap (1=big endian) */
 333 
 334 
 335 
 336 /***************************** Prototypes *****************************/
 337 
 338 static unsigned long lance_probe1( struct net_device *dev, struct lance_addr
 339                                    *init_rec );
 340 static int lance_open( struct net_device *dev );
 341 static void lance_init_ring( struct net_device *dev );
 342 static netdev_tx_t lance_start_xmit(struct sk_buff *skb,
 343                                     struct net_device *dev);
 344 static irqreturn_t lance_interrupt( int irq, void *dev_id );
 345 static int lance_rx( struct net_device *dev );
 346 static int lance_close( struct net_device *dev );
 347 static void set_multicast_list( struct net_device *dev );
 348 static int lance_set_mac_address( struct net_device *dev, void *addr );
 349 static void lance_tx_timeout (struct net_device *dev);
 350 
 351 /************************* End of Prototypes **************************/
 352 
 353 
 354 
 355 
 356 
 357 static void *slow_memcpy( void *dst, const void *src, size_t len )
 358 
 359 {       char *cto = dst;
 360         const char *cfrom = src;
 361 
 362         while( len-- ) {
 363                 *cto++ = *cfrom++;
 364                 MFPDELAY();
 365         }
 366         return dst;
 367 }
 368 
 369 
 370 struct net_device * __init atarilance_probe(int unit)
 371 {
 372         int i;
 373         static int found;
 374         struct net_device *dev;
 375         int err = -ENODEV;
 376 
 377         if (!MACH_IS_ATARI || found)
 378                 /* Assume there's only one board possible... That seems true, since
 379                  * the Riebl/PAM board's address cannot be changed. */
 380                 return ERR_PTR(-ENODEV);
 381 
 382         dev = alloc_etherdev(sizeof(struct lance_private));
 383         if (!dev)
 384                 return ERR_PTR(-ENOMEM);
 385         if (unit >= 0) {
 386                 sprintf(dev->name, "eth%d", unit);
 387                 netdev_boot_setup_check(dev);
 388         }
 389 
 390         for( i = 0; i < N_LANCE_ADDR; ++i ) {
 391                 if (lance_probe1( dev, &lance_addr_list[i] )) {
 392                         found = 1;
 393                         err = register_netdev(dev);
 394                         if (!err)
 395                                 return dev;
 396                         free_irq(dev->irq, dev);
 397                         break;
 398                 }
 399         }
 400         free_netdev(dev);
 401         return ERR_PTR(err);
 402 }
 403 
 404 
 405 /* Derived from hwreg_present() in atari/config.c: */
 406 
 407 static noinline int __init addr_accessible(volatile void *regp, int wordflag,
 408                                            int writeflag)
 409 {
 410         int             ret;
 411         unsigned long   flags;
 412         long    *vbr, save_berr;
 413 
 414         local_irq_save(flags);
 415 
 416         __asm__ __volatile__ ( "movec   %/vbr,%0" : "=r" (vbr) : );
 417         save_berr = vbr[2];
 418 
 419         __asm__ __volatile__
 420         (       "movel  %/sp,%/d1\n\t"
 421                 "movel  #Lberr,%2@\n\t"
 422                 "moveq  #0,%0\n\t"
 423                 "tstl   %3\n\t"
 424                 "bne    1f\n\t"
 425                 "moveb  %1@,%/d0\n\t"
 426                 "nop    \n\t"
 427                 "bra    2f\n"
 428 "1:              movew  %1@,%/d0\n\t"
 429                 "nop    \n"
 430 "2:              tstl   %4\n\t"
 431                 "beq    2f\n\t"
 432                 "tstl   %3\n\t"
 433                 "bne    1f\n\t"
 434                 "clrb   %1@\n\t"
 435                 "nop    \n\t"
 436                 "moveb  %/d0,%1@\n\t"
 437                 "nop    \n\t"
 438                 "bra    2f\n"
 439 "1:              clrw   %1@\n\t"
 440                 "nop    \n\t"
 441                 "movew  %/d0,%1@\n\t"
 442                 "nop    \n"
 443 "2:              moveq  #1,%0\n"
 444 "Lberr:  movel  %/d1,%/sp"
 445                 : "=&d" (ret)
 446                 : "a" (regp), "a" (&vbr[2]), "rm" (wordflag), "rm" (writeflag)
 447                 : "d0", "d1", "memory"
 448         );
 449 
 450         vbr[2] = save_berr;
 451         local_irq_restore(flags);
 452 
 453         return ret;
 454 }
 455 
 456 static const struct net_device_ops lance_netdev_ops = {
 457         .ndo_open               = lance_open,
 458         .ndo_stop               = lance_close,
 459         .ndo_start_xmit         = lance_start_xmit,
 460         .ndo_set_rx_mode        = set_multicast_list,
 461         .ndo_set_mac_address    = lance_set_mac_address,
 462         .ndo_tx_timeout         = lance_tx_timeout,
 463         .ndo_validate_addr      = eth_validate_addr,
 464 };
 465 
 466 static unsigned long __init lance_probe1( struct net_device *dev,
 467                                            struct lance_addr *init_rec )
 468 {
 469         volatile unsigned short *memaddr =
 470                 (volatile unsigned short *)init_rec->memaddr;
 471         volatile unsigned short *ioaddr =
 472                 (volatile unsigned short *)init_rec->ioaddr;
 473         struct lance_private    *lp;
 474         struct lance_ioreg              *IO;
 475         int                                     i;
 476         static int                              did_version;
 477         unsigned short                  save1, save2;
 478 
 479         PROBE_PRINT(( "Probing for Lance card at mem %#lx io %#lx\n",
 480                                   (long)memaddr, (long)ioaddr ));
 481 
 482         /* Test whether memory readable and writable */
 483         PROBE_PRINT(( "lance_probe1: testing memory to be accessible\n" ));
 484         if (!addr_accessible( memaddr, 1, 1 )) goto probe_fail;
 485 
 486         /* Written values should come back... */
 487         PROBE_PRINT(( "lance_probe1: testing memory to be writable (1)\n" ));
 488         save1 = *memaddr;
 489         *memaddr = 0x0001;
 490         if (*memaddr != 0x0001) goto probe_fail;
 491         PROBE_PRINT(( "lance_probe1: testing memory to be writable (2)\n" ));
 492         *memaddr = 0x0000;
 493         if (*memaddr != 0x0000) goto probe_fail;
 494         *memaddr = save1;
 495 
 496         /* First port should be readable and writable */
 497         PROBE_PRINT(( "lance_probe1: testing ioport to be accessible\n" ));
 498         if (!addr_accessible( ioaddr, 1, 1 )) goto probe_fail;
 499 
 500         /* and written values should be readable */
 501         PROBE_PRINT(( "lance_probe1: testing ioport to be writeable\n" ));
 502         save2 = ioaddr[1];
 503         ioaddr[1] = 0x0001;
 504         if (ioaddr[1] != 0x0001) goto probe_fail;
 505 
 506         /* The CSR0_INIT bit should not be readable */
 507         PROBE_PRINT(( "lance_probe1: testing CSR0 register function (1)\n" ));
 508         save1 = ioaddr[0];
 509         ioaddr[1] = CSR0;
 510         ioaddr[0] = CSR0_INIT | CSR0_STOP;
 511         if (ioaddr[0] != CSR0_STOP) {
 512                 ioaddr[0] = save1;
 513                 ioaddr[1] = save2;
 514                 goto probe_fail;
 515         }
 516         PROBE_PRINT(( "lance_probe1: testing CSR0 register function (2)\n" ));
 517         ioaddr[0] = CSR0_STOP;
 518         if (ioaddr[0] != CSR0_STOP) {
 519                 ioaddr[0] = save1;
 520                 ioaddr[1] = save2;
 521                 goto probe_fail;
 522         }
 523 
 524         /* Now ok... */
 525         PROBE_PRINT(( "lance_probe1: Lance card detected\n" ));
 526         goto probe_ok;
 527 
 528   probe_fail:
 529         return 0;
 530 
 531   probe_ok:
 532         lp = netdev_priv(dev);
 533         MEM = (struct lance_memory *)memaddr;
 534         IO = lp->iobase = (struct lance_ioreg *)ioaddr;
 535         dev->base_addr = (unsigned long)ioaddr; /* informational only */
 536         lp->memcpy_f = init_rec->slow_flag ? slow_memcpy : memcpy;
 537 
 538         REGA( CSR0 ) = CSR0_STOP;
 539 
 540         /* Now test for type: If the eeprom I/O port is readable, it is a
 541          * PAM card */
 542         if (addr_accessible( &(IO->eeprom), 0, 0 )) {
 543                 /* Switch back to Ram */
 544                 i = IO->mem;
 545                 lp->cardtype = PAM_CARD;
 546         }
 547         else if (*RIEBL_MAGIC_ADDR == RIEBL_MAGIC) {
 548                 lp->cardtype = NEW_RIEBL;
 549         }
 550         else
 551                 lp->cardtype = OLD_RIEBL;
 552 
 553         if (lp->cardtype == PAM_CARD ||
 554                 memaddr == (unsigned short *)0xffe00000) {
 555                 /* PAMs card and Riebl on ST use level 5 autovector */
 556                 if (request_irq(IRQ_AUTO_5, lance_interrupt, 0,
 557                                 "PAM,Riebl-ST Ethernet", dev)) {
 558                         printk( "Lance: request for irq %d failed\n", IRQ_AUTO_5 );
 559                         return 0;
 560                 }
 561                 dev->irq = IRQ_AUTO_5;
 562         }
 563         else {
 564                 /* For VME-RieblCards, request a free VME int */
 565                 unsigned int irq = atari_register_vme_int();
 566                 if (!irq) {
 567                         printk( "Lance: request for VME interrupt failed\n" );
 568                         return 0;
 569                 }
 570                 if (request_irq(irq, lance_interrupt, 0, "Riebl-VME Ethernet",
 571                                 dev)) {
 572                         printk( "Lance: request for irq %u failed\n", irq );
 573                         return 0;
 574                 }
 575                 dev->irq = irq;
 576         }
 577 
 578         printk("%s: %s at io %#lx, mem %#lx, irq %d%s, hwaddr ",
 579                    dev->name, lance_names[lp->cardtype],
 580                    (unsigned long)ioaddr,
 581                    (unsigned long)memaddr,
 582                    dev->irq,
 583                    init_rec->slow_flag ? " (slow memcpy)" : "" );
 584 
 585         /* Get the ethernet address */
 586         switch( lp->cardtype ) {
 587           case OLD_RIEBL:
 588                 /* No ethernet address! (Set some default address) */
 589                 memcpy(dev->dev_addr, OldRieblDefHwaddr, ETH_ALEN);
 590                 break;
 591           case NEW_RIEBL:
 592                 lp->memcpy_f(dev->dev_addr, RIEBL_HWADDR_ADDR, ETH_ALEN);
 593                 break;
 594           case PAM_CARD:
 595                 i = IO->eeprom;
 596                 for( i = 0; i < 6; ++i )
 597                         dev->dev_addr[i] =
 598                                 ((((unsigned short *)MEM)[i*2] & 0x0f) << 4) |
 599                                 ((((unsigned short *)MEM)[i*2+1] & 0x0f));
 600                 i = IO->mem;
 601                 break;
 602         }
 603         printk("%pM\n", dev->dev_addr);
 604         if (lp->cardtype == OLD_RIEBL) {
 605                 printk( "%s: Warning: This is a default ethernet address!\n",
 606                                 dev->name );
 607                 printk( "      Use \"ifconfig hw ether ...\" to set the address.\n" );
 608         }
 609 
 610         spin_lock_init(&lp->devlock);
 611 
 612         MEM->init.mode = 0x0000;                /* Disable Rx and Tx. */
 613         for( i = 0; i < 6; i++ )
 614                 MEM->init.hwaddr[i] = dev->dev_addr[i^1]; /* <- 16 bit swap! */
 615         MEM->init.filter[0] = 0x00000000;
 616         MEM->init.filter[1] = 0x00000000;
 617         MEM->init.rx_ring.adr_lo = offsetof( struct lance_memory, rx_head );
 618         MEM->init.rx_ring.adr_hi = 0;
 619         MEM->init.rx_ring.len    = RX_RING_LEN_BITS;
 620         MEM->init.tx_ring.adr_lo = offsetof( struct lance_memory, tx_head );
 621         MEM->init.tx_ring.adr_hi = 0;
 622         MEM->init.tx_ring.len    = TX_RING_LEN_BITS;
 623 
 624         if (lp->cardtype == PAM_CARD)
 625                 IO->ivec = IRQ_SOURCE_TO_VECTOR(dev->irq);
 626         else
 627                 *RIEBL_IVEC_ADDR = IRQ_SOURCE_TO_VECTOR(dev->irq);
 628 
 629         if (did_version++ == 0)
 630                 DPRINTK( 1, ( version ));
 631 
 632         dev->netdev_ops = &lance_netdev_ops;
 633 
 634         /* XXX MSch */
 635         dev->watchdog_timeo = TX_TIMEOUT;
 636 
 637         return 1;
 638 }
 639 
 640 
 641 static int lance_open( struct net_device *dev )
 642 {
 643         struct lance_private *lp = netdev_priv(dev);
 644         struct lance_ioreg       *IO = lp->iobase;
 645         int i;
 646 
 647         DPRINTK( 2, ( "%s: lance_open()\n", dev->name ));
 648 
 649         lance_init_ring(dev);
 650         /* Re-initialize the LANCE, and start it when done. */
 651 
 652         REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0);
 653         REGA( CSR2 ) = 0;
 654         REGA( CSR1 ) = 0;
 655         REGA( CSR0 ) = CSR0_INIT;
 656         /* From now on, AREG is kept to point to CSR0 */
 657 
 658         i = 1000000;
 659         while (--i > 0)
 660                 if (DREG & CSR0_IDON)
 661                         break;
 662         if (i <= 0 || (DREG & CSR0_ERR)) {
 663                 DPRINTK( 2, ( "lance_open(): opening %s failed, i=%d, csr0=%04x\n",
 664                                           dev->name, i, DREG ));
 665                 DREG = CSR0_STOP;
 666                 return -EIO;
 667         }
 668         DREG = CSR0_IDON;
 669         DREG = CSR0_STRT;
 670         DREG = CSR0_INEA;
 671 
 672         netif_start_queue (dev);
 673 
 674         DPRINTK( 2, ( "%s: LANCE is open, csr0 %04x\n", dev->name, DREG ));
 675 
 676         return 0;
 677 }
 678 
 679 
 680 /* Initialize the LANCE Rx and Tx rings. */
 681 
 682 static void lance_init_ring( struct net_device *dev )
 683 {
 684         struct lance_private *lp = netdev_priv(dev);
 685         int i;
 686         unsigned offset;
 687 
 688         lp->tx_full = 0;
 689         lp->cur_rx = lp->cur_tx = 0;
 690         lp->dirty_tx = 0;
 691 
 692         offset = offsetof( struct lance_memory, packet_area );
 693 
 694 /* If the packet buffer at offset 'o' would conflict with the reserved area
 695  * of RieblCards, advance it */
 696 #define CHECK_OFFSET(o)                                                                                                          \
 697         do {                                                                                                                                     \
 698                 if (lp->cardtype == OLD_RIEBL || lp->cardtype == NEW_RIEBL) {            \
 699                         if (((o) < RIEBL_RSVD_START) ? (o)+PKT_BUF_SZ > RIEBL_RSVD_START \
 700                                                                                  : (o) < RIEBL_RSVD_END)                         \
 701                                 (o) = RIEBL_RSVD_END;                                                                            \
 702                 }                                                                                                                                        \
 703         } while(0)
 704 
 705         for( i = 0; i < TX_RING_SIZE; i++ ) {
 706                 CHECK_OFFSET(offset);
 707                 MEM->tx_head[i].base = offset;
 708                 MEM->tx_head[i].flag = TMD1_OWN_HOST;
 709                 MEM->tx_head[i].base_hi = 0;
 710                 MEM->tx_head[i].length = 0;
 711                 MEM->tx_head[i].misc = 0;
 712                 offset += PKT_BUF_SZ;
 713         }
 714 
 715         for( i = 0; i < RX_RING_SIZE; i++ ) {
 716                 CHECK_OFFSET(offset);
 717                 MEM->rx_head[i].base = offset;
 718                 MEM->rx_head[i].flag = TMD1_OWN_CHIP;
 719                 MEM->rx_head[i].base_hi = 0;
 720                 MEM->rx_head[i].buf_length = -PKT_BUF_SZ;
 721                 MEM->rx_head[i].msg_length = 0;
 722                 offset += PKT_BUF_SZ;
 723         }
 724 }
 725 
 726 
 727 /* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */
 728 
 729 
 730 static void lance_tx_timeout (struct net_device *dev)
 731 {
 732         struct lance_private *lp = netdev_priv(dev);
 733         struct lance_ioreg       *IO = lp->iobase;
 734 
 735         AREG = CSR0;
 736         DPRINTK( 1, ( "%s: transmit timed out, status %04x, resetting.\n",
 737                           dev->name, DREG ));
 738         DREG = CSR0_STOP;
 739         /*
 740          * Always set BSWP after a STOP as STOP puts it back into
 741          * little endian mode.
 742          */
 743         REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0);
 744         dev->stats.tx_errors++;
 745 #ifndef final_version
 746                 {       int i;
 747                         DPRINTK( 2, ( "Ring data: dirty_tx %d cur_tx %d%s cur_rx %d\n",
 748                                                   lp->dirty_tx, lp->cur_tx,
 749                                                   lp->tx_full ? " (full)" : "",
 750                                                   lp->cur_rx ));
 751                         for( i = 0 ; i < RX_RING_SIZE; i++ )
 752                                 DPRINTK( 2, ( "rx #%d: base=%04x blen=%04x mlen=%04x\n",
 753                                                           i, MEM->rx_head[i].base,
 754                                                           -MEM->rx_head[i].buf_length,
 755                                                           MEM->rx_head[i].msg_length ));
 756                         for( i = 0 ; i < TX_RING_SIZE; i++ )
 757                                 DPRINTK( 2, ( "tx #%d: base=%04x len=%04x misc=%04x\n",
 758                                                           i, MEM->tx_head[i].base,
 759                                                           -MEM->tx_head[i].length,
 760                                                           MEM->tx_head[i].misc ));
 761                 }
 762 #endif
 763         /* XXX MSch: maybe purge/reinit ring here */
 764         /* lance_restart, essentially */
 765         lance_init_ring(dev);
 766         REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT;
 767         netif_trans_update(dev); /* prevent tx timeout */
 768         netif_wake_queue(dev);
 769 }
 770 
 771 /* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */
 772 
 773 static netdev_tx_t
 774 lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
 775 {
 776         struct lance_private *lp = netdev_priv(dev);
 777         struct lance_ioreg       *IO = lp->iobase;
 778         int entry, len;
 779         struct lance_tx_head *head;
 780         unsigned long flags;
 781 
 782         DPRINTK( 2, ( "%s: lance_start_xmit() called, csr0 %4.4x.\n",
 783                                   dev->name, DREG ));
 784 
 785 
 786         /* The old LANCE chips doesn't automatically pad buffers to min. size. */
 787         len = skb->len;
 788         if (len < ETH_ZLEN)
 789                 len = ETH_ZLEN;
 790         /* PAM-Card has a bug: Can only send packets with even number of bytes! */
 791         else if (lp->cardtype == PAM_CARD && (len & 1))
 792                 ++len;
 793 
 794         if (len > skb->len) {
 795                 if (skb_padto(skb, len))
 796                         return NETDEV_TX_OK;
 797         }
 798 
 799         netif_stop_queue (dev);
 800 
 801         /* Fill in a Tx ring entry */
 802         if (lance_debug >= 3) {
 803                 printk( "%s: TX pkt type 0x%04x from %pM to %pM"
 804                                 " data at 0x%08x len %d\n",
 805                                 dev->name, ((u_short *)skb->data)[6],
 806                                 &skb->data[6], skb->data,
 807                                 (int)skb->data, (int)skb->len );
 808         }
 809 
 810         /* We're not prepared for the int until the last flags are set/reset. And
 811          * the int may happen already after setting the OWN_CHIP... */
 812         spin_lock_irqsave (&lp->devlock, flags);
 813 
 814         /* Mask to ring buffer boundary. */
 815         entry = lp->cur_tx & TX_RING_MOD_MASK;
 816         head  = &(MEM->tx_head[entry]);
 817 
 818         /* Caution: the write order is important here, set the "ownership" bits
 819          * last.
 820          */
 821 
 822 
 823         head->length = -len;
 824         head->misc = 0;
 825         lp->memcpy_f( PKTBUF_ADDR(head), (void *)skb->data, skb->len );
 826         head->flag = TMD1_OWN_CHIP | TMD1_ENP | TMD1_STP;
 827         dev->stats.tx_bytes += skb->len;
 828         dev_kfree_skb( skb );
 829         lp->cur_tx++;
 830         while( lp->cur_tx >= TX_RING_SIZE && lp->dirty_tx >= TX_RING_SIZE ) {
 831                 lp->cur_tx -= TX_RING_SIZE;
 832                 lp->dirty_tx -= TX_RING_SIZE;
 833         }
 834 
 835         /* Trigger an immediate send poll. */
 836         DREG = CSR0_INEA | CSR0_TDMD;
 837 
 838         if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) ==
 839                 TMD1_OWN_HOST)
 840                 netif_start_queue (dev);
 841         else
 842                 lp->tx_full = 1;
 843         spin_unlock_irqrestore (&lp->devlock, flags);
 844 
 845         return NETDEV_TX_OK;
 846 }
 847 
 848 /* The LANCE interrupt handler. */
 849 
 850 static irqreturn_t lance_interrupt( int irq, void *dev_id )
 851 {
 852         struct net_device *dev = dev_id;
 853         struct lance_private *lp;
 854         struct lance_ioreg       *IO;
 855         int csr0, boguscnt = 10;
 856         int handled = 0;
 857 
 858         if (dev == NULL) {
 859                 DPRINTK( 1, ( "lance_interrupt(): interrupt for unknown device.\n" ));
 860                 return IRQ_NONE;
 861         }
 862 
 863         lp = netdev_priv(dev);
 864         IO = lp->iobase;
 865         spin_lock (&lp->devlock);
 866 
 867         AREG = CSR0;
 868 
 869         while( ((csr0 = DREG) & (CSR0_ERR | CSR0_TINT | CSR0_RINT)) &&
 870                    --boguscnt >= 0) {
 871                 handled = 1;
 872                 /* Acknowledge all of the current interrupt sources ASAP. */
 873                 DREG = csr0 & ~(CSR0_INIT | CSR0_STRT | CSR0_STOP |
 874                                                                         CSR0_TDMD | CSR0_INEA);
 875 
 876                 DPRINTK( 2, ( "%s: interrupt  csr0=%04x new csr=%04x.\n",
 877                                           dev->name, csr0, DREG ));
 878 
 879                 if (csr0 & CSR0_RINT)                   /* Rx interrupt */
 880                         lance_rx( dev );
 881 
 882                 if (csr0 & CSR0_TINT) {                 /* Tx-done interrupt */
 883                         int dirty_tx = lp->dirty_tx;
 884 
 885                         while( dirty_tx < lp->cur_tx) {
 886                                 int entry = dirty_tx & TX_RING_MOD_MASK;
 887                                 int status = MEM->tx_head[entry].flag;
 888 
 889                                 if (status & TMD1_OWN_CHIP)
 890                                         break;                  /* It still hasn't been Txed */
 891 
 892                                 MEM->tx_head[entry].flag = 0;
 893 
 894                                 if (status & TMD1_ERR) {
 895                                         /* There was an major error, log it. */
 896                                         int err_status = MEM->tx_head[entry].misc;
 897                                         dev->stats.tx_errors++;
 898                                         if (err_status & TMD3_RTRY) dev->stats.tx_aborted_errors++;
 899                                         if (err_status & TMD3_LCAR) dev->stats.tx_carrier_errors++;
 900                                         if (err_status & TMD3_LCOL) dev->stats.tx_window_errors++;
 901                                         if (err_status & TMD3_UFLO) {
 902                                                 /* Ackk!  On FIFO errors the Tx unit is turned off! */
 903                                                 dev->stats.tx_fifo_errors++;
 904                                                 /* Remove this verbosity later! */
 905                                                 DPRINTK( 1, ( "%s: Tx FIFO error! Status %04x\n",
 906                                                                           dev->name, csr0 ));
 907                                                 /* Restart the chip. */
 908                                                 DREG = CSR0_STRT;
 909                                         }
 910                                 } else {
 911                                         if (status & (TMD1_MORE | TMD1_ONE | TMD1_DEF))
 912                                                 dev->stats.collisions++;
 913                                         dev->stats.tx_packets++;
 914                                 }
 915 
 916                                 /* XXX MSch: free skb?? */
 917                                 dirty_tx++;
 918                         }
 919 
 920 #ifndef final_version
 921                         if (lp->cur_tx - dirty_tx >= TX_RING_SIZE) {
 922                                 DPRINTK( 0, ( "out-of-sync dirty pointer,"
 923                                                           " %d vs. %d, full=%ld.\n",
 924                                                           dirty_tx, lp->cur_tx, lp->tx_full ));
 925                                 dirty_tx += TX_RING_SIZE;
 926                         }
 927 #endif
 928 
 929                         if (lp->tx_full && (netif_queue_stopped(dev)) &&
 930                                 dirty_tx > lp->cur_tx - TX_RING_SIZE + 2) {
 931                                 /* The ring is no longer full, clear tbusy. */
 932                                 lp->tx_full = 0;
 933                                 netif_wake_queue (dev);
 934                         }
 935 
 936                         lp->dirty_tx = dirty_tx;
 937                 }
 938 
 939                 /* Log misc errors. */
 940                 if (csr0 & CSR0_BABL) dev->stats.tx_errors++; /* Tx babble. */
 941                 if (csr0 & CSR0_MISS) dev->stats.rx_errors++; /* Missed a Rx frame. */
 942                 if (csr0 & CSR0_MERR) {
 943                         DPRINTK( 1, ( "%s: Bus master arbitration failure (?!?), "
 944                                                   "status %04x.\n", dev->name, csr0 ));
 945                         /* Restart the chip. */
 946                         DREG = CSR0_STRT;
 947                 }
 948         }
 949 
 950     /* Clear any other interrupt, and set interrupt enable. */
 951         DREG = CSR0_BABL | CSR0_CERR | CSR0_MISS | CSR0_MERR |
 952                    CSR0_IDON | CSR0_INEA;
 953 
 954         DPRINTK( 2, ( "%s: exiting interrupt, csr0=%#04x.\n",
 955                                   dev->name, DREG ));
 956 
 957         spin_unlock (&lp->devlock);
 958         return IRQ_RETVAL(handled);
 959 }
 960 
 961 
 962 static int lance_rx( struct net_device *dev )
 963 {
 964         struct lance_private *lp = netdev_priv(dev);
 965         int entry = lp->cur_rx & RX_RING_MOD_MASK;
 966         int i;
 967 
 968         DPRINTK( 2, ( "%s: rx int, flag=%04x\n", dev->name,
 969                                   MEM->rx_head[entry].flag ));
 970 
 971         /* If we own the next entry, it's a new packet. Send it up. */
 972         while( (MEM->rx_head[entry].flag & RMD1_OWN) == RMD1_OWN_HOST ) {
 973                 struct lance_rx_head *head = &(MEM->rx_head[entry]);
 974                 int status = head->flag;
 975 
 976                 if (status != (RMD1_ENP|RMD1_STP)) {            /* There was an error. */
 977                         /* There is a tricky error noted by John Murphy,
 978                            <murf@perftech.com> to Russ Nelson: Even with full-sized
 979                            buffers it's possible for a jabber packet to use two
 980                            buffers, with only the last correctly noting the error. */
 981                         if (status & RMD1_ENP)  /* Only count a general error at the */
 982                                 dev->stats.rx_errors++; /* end of a packet.*/
 983                         if (status & RMD1_FRAM) dev->stats.rx_frame_errors++;
 984                         if (status & RMD1_OFLO) dev->stats.rx_over_errors++;
 985                         if (status & RMD1_CRC) dev->stats.rx_crc_errors++;
 986                         if (status & RMD1_BUFF) dev->stats.rx_fifo_errors++;
 987                         head->flag &= (RMD1_ENP|RMD1_STP);
 988                 } else {
 989                         /* Malloc up new buffer, compatible with net-3. */
 990                         short pkt_len = head->msg_length & 0xfff;
 991                         struct sk_buff *skb;
 992 
 993                         if (pkt_len < 60) {
 994                                 printk( "%s: Runt packet!\n", dev->name );
 995                                 dev->stats.rx_errors++;
 996                         }
 997                         else {
 998                                 skb = netdev_alloc_skb(dev, pkt_len + 2);
 999                                 if (skb == NULL) {
1000                                         for( i = 0; i < RX_RING_SIZE; i++ )
1001                                                 if (MEM->rx_head[(entry+i) & RX_RING_MOD_MASK].flag &
1002                                                         RMD1_OWN_CHIP)
1003                                                         break;
1004 
1005                                         if (i > RX_RING_SIZE - 2) {
1006                                                 dev->stats.rx_dropped++;
1007                                                 head->flag |= RMD1_OWN_CHIP;
1008                                                 lp->cur_rx++;
1009                                         }
1010                                         break;
1011                                 }
1012 
1013                                 if (lance_debug >= 3) {
1014                                         u_char *data = PKTBUF_ADDR(head);
1015 
1016                                         printk(KERN_DEBUG "%s: RX pkt type 0x%04x from %pM to %pM "
1017                                                    "data %8ph len %d\n",
1018                                                    dev->name, ((u_short *)data)[6],
1019                                                    &data[6], data, &data[15], pkt_len);
1020                                 }
1021 
1022                                 skb_reserve( skb, 2 );  /* 16 byte align */
1023                                 skb_put( skb, pkt_len );        /* Make room */
1024                                 lp->memcpy_f( skb->data, PKTBUF_ADDR(head), pkt_len );
1025                                 skb->protocol = eth_type_trans( skb, dev );
1026                                 netif_rx( skb );
1027                                 dev->stats.rx_packets++;
1028                                 dev->stats.rx_bytes += pkt_len;
1029                         }
1030                 }
1031 
1032                 head->flag |= RMD1_OWN_CHIP;
1033                 entry = (++lp->cur_rx) & RX_RING_MOD_MASK;
1034         }
1035         lp->cur_rx &= RX_RING_MOD_MASK;
1036 
1037         /* From lance.c (Donald Becker): */
1038         /* We should check that at least two ring entries are free.      If not,
1039            we should free one and mark stats->rx_dropped++. */
1040 
1041         return 0;
1042 }
1043 
1044 
1045 static int lance_close( struct net_device *dev )
1046 {
1047         struct lance_private *lp = netdev_priv(dev);
1048         struct lance_ioreg       *IO = lp->iobase;
1049 
1050         netif_stop_queue (dev);
1051 
1052         AREG = CSR0;
1053 
1054         DPRINTK( 2, ( "%s: Shutting down ethercard, status was %2.2x.\n",
1055                                   dev->name, DREG ));
1056 
1057         /* We stop the LANCE here -- it occasionally polls
1058            memory if we don't. */
1059         DREG = CSR0_STOP;
1060 
1061         return 0;
1062 }
1063 
1064 
1065 /* Set or clear the multicast filter for this adaptor.
1066    num_addrs == -1              Promiscuous mode, receive all packets
1067    num_addrs == 0               Normal mode, clear multicast list
1068    num_addrs > 0                Multicast mode, receive normal and MC packets, and do
1069                                                 best-effort filtering.
1070  */
1071 
1072 static void set_multicast_list( struct net_device *dev )
1073 {
1074         struct lance_private *lp = netdev_priv(dev);
1075         struct lance_ioreg       *IO = lp->iobase;
1076 
1077         if (netif_running(dev))
1078                 /* Only possible if board is already started */
1079                 return;
1080 
1081         /* We take the simple way out and always enable promiscuous mode. */
1082         DREG = CSR0_STOP; /* Temporarily stop the lance. */
1083 
1084         if (dev->flags & IFF_PROMISC) {
1085                 /* Log any net taps. */
1086                 DPRINTK( 2, ( "%s: Promiscuous mode enabled.\n", dev->name ));
1087                 REGA( CSR15 ) = 0x8000; /* Set promiscuous mode */
1088         } else {
1089                 short multicast_table[4];
1090                 int num_addrs = netdev_mc_count(dev);
1091                 int i;
1092                 /* We don't use the multicast table, but rely on upper-layer
1093                  * filtering. */
1094                 memset( multicast_table, (num_addrs == 0) ? 0 : -1,
1095                                 sizeof(multicast_table) );
1096                 for( i = 0; i < 4; i++ )
1097                         REGA( CSR8+i ) = multicast_table[i];
1098                 REGA( CSR15 ) = 0; /* Unset promiscuous mode */
1099         }
1100 
1101         /*
1102          * Always set BSWP after a STOP as STOP puts it back into
1103          * little endian mode.
1104          */
1105         REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0);
1106 
1107         /* Resume normal operation and reset AREG to CSR0 */
1108         REGA( CSR0 ) = CSR0_IDON | CSR0_INEA | CSR0_STRT;
1109 }
1110 
1111 
1112 /* This is needed for old RieblCards and possible for new RieblCards */
1113 
1114 static int lance_set_mac_address( struct net_device *dev, void *addr )
1115 {
1116         struct lance_private *lp = netdev_priv(dev);
1117         struct sockaddr *saddr = addr;
1118         int i;
1119 
1120         if (lp->cardtype != OLD_RIEBL && lp->cardtype != NEW_RIEBL)
1121                 return -EOPNOTSUPP;
1122 
1123         if (netif_running(dev)) {
1124                 /* Only possible while card isn't started */
1125                 DPRINTK( 1, ( "%s: hwaddr can be set only while card isn't open.\n",
1126                                           dev->name ));
1127                 return -EIO;
1128         }
1129 
1130         memcpy( dev->dev_addr, saddr->sa_data, dev->addr_len );
1131         for( i = 0; i < 6; i++ )
1132                 MEM->init.hwaddr[i] = dev->dev_addr[i^1]; /* <- 16 bit swap! */
1133         lp->memcpy_f( RIEBL_HWADDR_ADDR, dev->dev_addr, 6 );
1134         /* set also the magic for future sessions */
1135         *RIEBL_MAGIC_ADDR = RIEBL_MAGIC;
1136 
1137         return 0;
1138 }
1139 
1140 
1141 #ifdef MODULE
1142 static struct net_device *atarilance_dev;
1143 
1144 static int __init atarilance_module_init(void)
1145 {
1146         atarilance_dev = atarilance_probe(-1);
1147         return PTR_ERR_OR_ZERO(atarilance_dev);
1148 }
1149 
1150 static void __exit atarilance_module_exit(void)
1151 {
1152         unregister_netdev(atarilance_dev);
1153         free_irq(atarilance_dev->irq, atarilance_dev);
1154         free_netdev(atarilance_dev);
1155 }
1156 module_init(atarilance_module_init);
1157 module_exit(atarilance_module_exit);
1158 #endif /* MODULE */
1159 
1160 
1161 /*
1162  * Local variables:
1163  *  c-indent-level: 4
1164  *  tab-width: 4
1165  * End:
1166  */
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/ethernet/amd/atarilance.c

DEFINITIONS
