Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | net-3-driver for the SKNET MCA-based cards |
| 3 | |
| 4 | This is an extension to the Linux operating system, and is covered by the |
| 5 | same GNU General Public License that covers that work. |
| 6 | |
| 7 | Copyright 1999 by Alfred Arnold (alfred@ccac.rwth-aachen.de, |
| 8 | alfred.arnold@lancom.de) |
| 9 | |
| 10 | This driver is based both on the 3C523 driver and the SK_G16 driver. |
| 11 | |
| 12 | paper sources: |
| 13 | 'PC Hardware: Aufbau, Funktionsweise, Programmierung' by |
| 14 | Hans-Peter Messmer for the basic Microchannel stuff |
| 15 | |
| 16 | 'Linux Geraetetreiber' by Allesandro Rubini, Kalle Dalheimer |
| 17 | for help on Ethernet driver programming |
| 18 | |
| 19 | 'Ethernet/IEEE 802.3 Family 1992 World Network Data Book/Handbook' by AMD |
| 20 | for documentation on the AM7990 LANCE |
| 21 | |
| 22 | 'SKNET Personal Technisches Manual', Version 1.2 by Schneider&Koch |
| 23 | for documentation on the Junior board |
| 24 | |
| 25 | 'SK-NET MC2+ Technical Manual", Version 1.1 by Schneider&Koch for |
| 26 | documentation on the MC2 bord |
| 27 | |
| 28 | A big thank you to the S&K support for providing me so quickly with |
| 29 | documentation! |
| 30 | |
| 31 | Also see http://www.syskonnect.com/ |
| 32 | |
| 33 | Missing things: |
| 34 | |
| 35 | -> set debug level via ioctl instead of compile-time switches |
| 36 | -> I didn't follow the development of the 2.1.x kernels, so my |
| 37 | assumptions about which things changed with which kernel version |
| 38 | are probably nonsense |
| 39 | |
| 40 | History: |
| 41 | May 16th, 1999 |
| 42 | startup |
| 43 | May 22st, 1999 |
| 44 | added private structure, methods |
| 45 | begun building data structures in RAM |
| 46 | May 23nd, 1999 |
| 47 | can receive frames, send frames |
| 48 | May 24th, 1999 |
| 49 | modularized initialization of LANCE |
| 50 | loadable as module |
| 51 | still Tx problem :-( |
| 52 | May 26th, 1999 |
| 53 | MC2 works |
| 54 | support for multiple devices |
| 55 | display media type for MC2+ |
| 56 | May 28th, 1999 |
| 57 | fixed problem in GetLANCE leaving interrupts turned off |
| 58 | increase TX queue to 4 packets to improve send performance |
| 59 | May 29th, 1999 |
| 60 | a few corrections in statistics, caught rcvr overruns |
| 61 | reinitialization of LANCE/board in critical situations |
| 62 | MCA info implemented |
| 63 | implemented LANCE multicast filter |
| 64 | Jun 6th, 1999 |
| 65 | additions for Linux 2.2 |
| 66 | Dec 25th, 1999 |
| 67 | unfortunately there seem to be newer MC2+ boards that react |
| 68 | on IRQ 3/5/9/10 instead of 3/5/10/11, so we have to autoprobe |
| 69 | in questionable cases... |
| 70 | Dec 28th, 1999 |
| 71 | integrated patches from David Weinehall & Bill Wendling for 2.3 |
| 72 | kernels (isa_...functions). Things are defined in a way that |
| 73 | it still works with 2.0.x 8-) |
| 74 | Dec 30th, 1999 |
| 75 | added handling of the remaining interrupt conditions. That |
| 76 | should cure the spurious hangs. |
| 77 | Jan 30th, 2000 |
| 78 | newer kernels automatically probe more than one board, so the |
| 79 | 'startslot' as a variable is also needed here |
| 80 | June 1st, 2000 |
| 81 | added changes for recent 2.3 kernels |
| 82 | |
| 83 | *************************************************************************/ |
| 84 | |
| 85 | #include <linux/kernel.h> |
| 86 | #include <linux/string.h> |
| 87 | #include <linux/errno.h> |
| 88 | #include <linux/ioport.h> |
| 89 | #include <linux/slab.h> |
| 90 | #include <linux/interrupt.h> |
| 91 | #include <linux/delay.h> |
| 92 | #include <linux/time.h> |
| 93 | #include <linux/mca-legacy.h> |
| 94 | #include <linux/init.h> |
| 95 | #include <linux/module.h> |
| 96 | #include <linux/version.h> |
| 97 | #include <linux/netdevice.h> |
| 98 | #include <linux/etherdevice.h> |
| 99 | #include <linux/skbuff.h> |
| 100 | #include <linux/bitops.h> |
| 101 | |
| 102 | #include <asm/processor.h> |
| 103 | #include <asm/io.h> |
| 104 | |
| 105 | #define _SK_MCA_DRIVER_ |
| 106 | #include "sk_mca.h" |
| 107 | |
| 108 | /* ------------------------------------------------------------------------ |
| 109 | * global static data - not more since we can handle multiple boards and |
| 110 | * have to pack all state info into the device struct! |
| 111 | * ------------------------------------------------------------------------ */ |
| 112 | |
| 113 | static char *MediaNames[Media_Count] = |
| 114 | { "10Base2", "10BaseT", "10Base5", "Unknown" }; |
| 115 | |
| 116 | static unsigned char poly[] = |
| 117 | { 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, |
| 118 | 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0 |
| 119 | }; |
| 120 | |
| 121 | /* ------------------------------------------------------------------------ |
| 122 | * private subfunctions |
| 123 | * ------------------------------------------------------------------------ */ |
| 124 | |
| 125 | /* dump parts of shared memory - only needed during debugging */ |
| 126 | |
| 127 | #ifdef DEBUG |
| 128 | static void dumpmem(struct net_device *dev, u32 start, u32 len) |
| 129 | { |
| 130 | skmca_priv *priv = netdev_priv(dev); |
| 131 | int z; |
| 132 | |
| 133 | for (z = 0; z < len; z++) { |
| 134 | if ((z & 15) == 0) |
| 135 | printk("%04x:", z); |
| 136 | printk(" %02x", readb(priv->base + start + z)); |
| 137 | if ((z & 15) == 15) |
| 138 | printk("\n"); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | /* print exact time - ditto */ |
| 143 | |
| 144 | static void PrTime(void) |
| 145 | { |
| 146 | struct timeval tv; |
| 147 | |
| 148 | do_gettimeofday(&tv); |
| 149 | printk("%9d:%06d: ", tv.tv_sec, tv.tv_usec); |
| 150 | } |
| 151 | #endif |
| 152 | |
| 153 | /* deduce resources out of POS registers */ |
| 154 | |
| 155 | static void __init getaddrs(int slot, int junior, int *base, int *irq, |
| 156 | skmca_medium * medium) |
| 157 | { |
| 158 | u_char pos0, pos1, pos2; |
| 159 | |
| 160 | if (junior) { |
| 161 | pos0 = mca_read_stored_pos(slot, 2); |
| 162 | *base = ((pos0 & 0x0e) << 13) + 0xc0000; |
| 163 | *irq = ((pos0 & 0x10) >> 4) + 10; |
| 164 | *medium = Media_Unknown; |
| 165 | } else { |
| 166 | /* reset POS 104 Bits 0+1 so the shared memory region goes to the |
| 167 | configured area between 640K and 1M. Afterwards, enable the MC2. |
| 168 | I really don't know what rode SK to do this... */ |
| 169 | |
| 170 | mca_write_pos(slot, 4, |
| 171 | mca_read_stored_pos(slot, 4) & 0xfc); |
| 172 | mca_write_pos(slot, 2, |
| 173 | mca_read_stored_pos(slot, 2) | 0x01); |
| 174 | |
| 175 | pos1 = mca_read_stored_pos(slot, 3); |
| 176 | pos2 = mca_read_stored_pos(slot, 4); |
| 177 | *base = ((pos1 & 0x07) << 14) + 0xc0000; |
| 178 | switch (pos2 & 0x0c) { |
| 179 | case 0: |
| 180 | *irq = 3; |
| 181 | break; |
| 182 | case 4: |
| 183 | *irq = 5; |
| 184 | break; |
| 185 | case 8: |
| 186 | *irq = -10; |
| 187 | break; |
| 188 | case 12: |
| 189 | *irq = -11; |
| 190 | break; |
| 191 | } |
| 192 | *medium = (pos2 >> 6) & 3; |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | /* check for both cards: |
| 197 | When the MC2 is turned off, it was configured for more than 15MB RAM, |
| 198 | is disabled and won't get detected using the standard probe. We |
| 199 | therefore have to scan the slots manually :-( */ |
| 200 | |
| 201 | static int __init dofind(int *junior, int firstslot) |
| 202 | { |
| 203 | int slot; |
| 204 | unsigned int id; |
| 205 | |
| 206 | for (slot = firstslot; slot < MCA_MAX_SLOT_NR; slot++) { |
| 207 | id = mca_read_stored_pos(slot, 0) |
| 208 | + (((unsigned int) mca_read_stored_pos(slot, 1)) << 8); |
| 209 | |
| 210 | *junior = 0; |
| 211 | if (id == SKNET_MCA_ID) |
| 212 | return slot; |
| 213 | *junior = 1; |
| 214 | if (id == SKNET_JUNIOR_MCA_ID) |
| 215 | return slot; |
| 216 | } |
| 217 | return MCA_NOTFOUND; |
| 218 | } |
| 219 | |
| 220 | /* reset the whole board */ |
| 221 | |
| 222 | static void ResetBoard(struct net_device *dev) |
| 223 | { |
| 224 | skmca_priv *priv = netdev_priv(dev); |
| 225 | |
| 226 | writeb(CTRL_RESET_ON, priv->ctrladdr); |
| 227 | udelay(10); |
| 228 | writeb(CTRL_RESET_OFF, priv->ctrladdr); |
| 229 | } |
| 230 | |
| 231 | /* wait for LANCE interface to become not busy */ |
| 232 | |
| 233 | static int WaitLANCE(struct net_device *dev) |
| 234 | { |
| 235 | skmca_priv *priv = netdev_priv(dev); |
| 236 | int t = 0; |
| 237 | |
| 238 | while ((readb(priv->ctrladdr) & STAT_IO_BUSY) == |
| 239 | STAT_IO_BUSY) { |
| 240 | udelay(1); |
| 241 | if (++t > 1000) { |
| 242 | printk("%s: LANCE access timeout", dev->name); |
| 243 | return 0; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | return 1; |
| 248 | } |
| 249 | |
| 250 | /* set LANCE register - must be atomic */ |
| 251 | |
| 252 | static void SetLANCE(struct net_device *dev, u16 addr, u16 value) |
| 253 | { |
| 254 | skmca_priv *priv = netdev_priv(dev); |
| 255 | unsigned long flags; |
| 256 | |
| 257 | /* disable interrupts */ |
| 258 | |
| 259 | spin_lock_irqsave(&priv->lock, flags); |
| 260 | |
| 261 | /* wait until no transfer is pending */ |
| 262 | |
| 263 | WaitLANCE(dev); |
| 264 | |
| 265 | /* transfer register address to RAP */ |
| 266 | |
| 267 | writeb(CTRL_RESET_OFF | CTRL_RW_WRITE | CTRL_ADR_RAP, priv->ctrladdr); |
| 268 | writew(addr, priv->ioregaddr); |
| 269 | writeb(IOCMD_GO, priv->cmdaddr); |
| 270 | udelay(1); |
| 271 | WaitLANCE(dev); |
| 272 | |
| 273 | /* transfer data to register */ |
| 274 | |
| 275 | writeb(CTRL_RESET_OFF | CTRL_RW_WRITE | CTRL_ADR_DATA, priv->ctrladdr); |
| 276 | writew(value, priv->ioregaddr); |
| 277 | writeb(IOCMD_GO, priv->cmdaddr); |
| 278 | udelay(1); |
| 279 | WaitLANCE(dev); |
| 280 | |
| 281 | /* reenable interrupts */ |
| 282 | |
| 283 | spin_unlock_irqrestore(&priv->lock, flags); |
| 284 | } |
| 285 | |
| 286 | /* get LANCE register */ |
| 287 | |
| 288 | static u16 GetLANCE(struct net_device *dev, u16 addr) |
| 289 | { |
| 290 | skmca_priv *priv = netdev_priv(dev); |
| 291 | unsigned long flags; |
| 292 | unsigned int res; |
| 293 | |
| 294 | /* disable interrupts */ |
| 295 | |
| 296 | spin_lock_irqsave(&priv->lock, flags); |
| 297 | |
| 298 | /* wait until no transfer is pending */ |
| 299 | |
| 300 | WaitLANCE(dev); |
| 301 | |
| 302 | /* transfer register address to RAP */ |
| 303 | |
| 304 | writeb(CTRL_RESET_OFF | CTRL_RW_WRITE | CTRL_ADR_RAP, priv->ctrladdr); |
| 305 | writew(addr, priv->ioregaddr); |
| 306 | writeb(IOCMD_GO, priv->cmdaddr); |
| 307 | udelay(1); |
| 308 | WaitLANCE(dev); |
| 309 | |
| 310 | /* transfer data from register */ |
| 311 | |
| 312 | writeb(CTRL_RESET_OFF | CTRL_RW_READ | CTRL_ADR_DATA, priv->ctrladdr); |
| 313 | writeb(IOCMD_GO, priv->cmdaddr); |
| 314 | udelay(1); |
| 315 | WaitLANCE(dev); |
| 316 | res = readw(priv->ioregaddr); |
| 317 | |
| 318 | /* reenable interrupts */ |
| 319 | |
| 320 | spin_unlock_irqrestore(&priv->lock, flags); |
| 321 | |
| 322 | return res; |
| 323 | } |
| 324 | |
| 325 | /* build up descriptors in shared RAM */ |
| 326 | |
| 327 | static void InitDscrs(struct net_device *dev) |
| 328 | { |
| 329 | skmca_priv *priv = netdev_priv(dev); |
| 330 | u32 bufaddr; |
| 331 | |
| 332 | /* Set up Tx descriptors. The board has only 16K RAM so bits 16..23 |
| 333 | are always 0. */ |
| 334 | |
| 335 | bufaddr = RAM_DATABASE; |
| 336 | { |
| 337 | LANCE_TxDescr descr; |
| 338 | int z; |
| 339 | |
| 340 | for (z = 0; z < TXCOUNT; z++) { |
| 341 | descr.LowAddr = bufaddr; |
| 342 | descr.Flags = 0; |
| 343 | descr.Len = 0xf000; |
| 344 | descr.Status = 0; |
| 345 | memcpy_toio(priv->base + RAM_TXBASE + |
| 346 | (z * sizeof(LANCE_TxDescr)), &descr, |
| 347 | sizeof(LANCE_TxDescr)); |
| 348 | memset_io(priv->base + bufaddr, 0, RAM_BUFSIZE); |
| 349 | bufaddr += RAM_BUFSIZE; |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | /* do the same for the Rx descriptors */ |
| 354 | |
| 355 | { |
| 356 | LANCE_RxDescr descr; |
| 357 | int z; |
| 358 | |
| 359 | for (z = 0; z < RXCOUNT; z++) { |
| 360 | descr.LowAddr = bufaddr; |
| 361 | descr.Flags = RXDSCR_FLAGS_OWN; |
| 362 | descr.MaxLen = -RAM_BUFSIZE; |
| 363 | descr.Len = 0; |
| 364 | memcpy_toio(priv->base + RAM_RXBASE + |
| 365 | (z * sizeof(LANCE_RxDescr)), &descr, |
| 366 | sizeof(LANCE_RxDescr)); |
| 367 | memset_io(priv->base + bufaddr, 0, RAM_BUFSIZE); |
| 368 | bufaddr += RAM_BUFSIZE; |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /* calculate the hash bit position for a given multicast address |
| 374 | taken more or less directly from the AMD datasheet... */ |
| 375 | |
| 376 | static void UpdateCRC(unsigned char *CRC, int bit) |
| 377 | { |
| 378 | int j; |
| 379 | |
| 380 | /* shift CRC one bit */ |
| 381 | |
| 382 | memmove(CRC + 1, CRC, 32 * sizeof(unsigned char)); |
| 383 | CRC[0] = 0; |
| 384 | |
| 385 | /* if bit XOR controlbit = 1, set CRC = CRC XOR polynomial */ |
| 386 | |
| 387 | if (bit ^ CRC[32]) |
| 388 | for (j = 0; j < 32; j++) |
| 389 | CRC[j] ^= poly[j]; |
| 390 | } |
| 391 | |
| 392 | static unsigned int GetHash(char *address) |
| 393 | { |
| 394 | unsigned char CRC[33]; |
| 395 | int i, byte, hashcode; |
| 396 | |
| 397 | /* a multicast address has bit 0 in the first byte set */ |
| 398 | |
| 399 | if ((address[0] & 1) == 0) |
| 400 | return -1; |
| 401 | |
| 402 | /* initialize CRC */ |
| 403 | |
| 404 | memset(CRC, 1, sizeof(CRC)); |
| 405 | |
| 406 | /* loop through address bits */ |
| 407 | |
| 408 | for (byte = 0; byte < 6; byte++) |
| 409 | for (i = 0; i < 8; i++) |
| 410 | UpdateCRC(CRC, (address[byte] >> i) & 1); |
| 411 | |
| 412 | /* hashcode is the 6 least significant bits of the CRC */ |
| 413 | |
| 414 | hashcode = 0; |
| 415 | for (i = 0; i < 6; i++) |
| 416 | hashcode = (hashcode << 1) + CRC[i]; |
| 417 | return hashcode; |
| 418 | } |
| 419 | |
| 420 | /* feed ready-built initialization block into LANCE */ |
| 421 | |
| 422 | static void InitLANCE(struct net_device *dev) |
| 423 | { |
| 424 | skmca_priv *priv = netdev_priv(dev); |
| 425 | |
| 426 | /* build up descriptors. */ |
| 427 | |
| 428 | InitDscrs(dev); |
| 429 | |
| 430 | /* next RX descriptor to be read is the first one. Since the LANCE |
| 431 | will start from the beginning after initialization, we have to |
| 432 | reset out pointers too. */ |
| 433 | |
| 434 | priv->nextrx = 0; |
| 435 | |
| 436 | /* no TX descriptors active */ |
| 437 | |
| 438 | priv->nexttxput = priv->nexttxdone = priv->txbusy = 0; |
| 439 | |
| 440 | /* set up the LANCE bus control register - constant for SKnet boards */ |
| 441 | |
| 442 | SetLANCE(dev, LANCE_CSR3, |
| 443 | CSR3_BSWAP_OFF | CSR3_ALE_LOW | CSR3_BCON_HOLD); |
| 444 | |
| 445 | /* write address of initialization block into LANCE */ |
| 446 | |
| 447 | SetLANCE(dev, LANCE_CSR1, RAM_INITBASE & 0xffff); |
| 448 | SetLANCE(dev, LANCE_CSR2, (RAM_INITBASE >> 16) & 0xff); |
| 449 | |
| 450 | /* we don't get ready until the LANCE has read the init block */ |
| 451 | |
| 452 | netif_stop_queue(dev); |
| 453 | |
| 454 | /* let LANCE read the initialization block. LANCE is ready |
| 455 | when we receive the corresponding interrupt. */ |
| 456 | |
| 457 | SetLANCE(dev, LANCE_CSR0, CSR0_INEA | CSR0_INIT); |
| 458 | } |
| 459 | |
| 460 | /* stop the LANCE so we can reinitialize it */ |
| 461 | |
| 462 | static void StopLANCE(struct net_device *dev) |
| 463 | { |
| 464 | /* can't take frames any more */ |
| 465 | |
| 466 | netif_stop_queue(dev); |
| 467 | |
| 468 | /* disable interrupts, stop it */ |
| 469 | |
| 470 | SetLANCE(dev, LANCE_CSR0, CSR0_STOP); |
| 471 | } |
| 472 | |
| 473 | /* initialize card and LANCE for proper operation */ |
| 474 | |
| 475 | static void InitBoard(struct net_device *dev) |
| 476 | { |
| 477 | skmca_priv *priv = netdev_priv(dev); |
| 478 | LANCE_InitBlock block; |
| 479 | |
| 480 | /* Lay out the shared RAM - first we create the init block for the LANCE. |
| 481 | We do not overwrite it later because we need it again when we switch |
| 482 | promiscous mode on/off. */ |
| 483 | |
| 484 | block.Mode = 0; |
| 485 | if (dev->flags & IFF_PROMISC) |
| 486 | block.Mode |= LANCE_INIT_PROM; |
| 487 | memcpy(block.PAdr, dev->dev_addr, 6); |
| 488 | memset(block.LAdrF, 0, sizeof(block.LAdrF)); |
| 489 | block.RdrP = (RAM_RXBASE & 0xffffff) | (LRXCOUNT << 29); |
| 490 | block.TdrP = (RAM_TXBASE & 0xffffff) | (LTXCOUNT << 29); |
| 491 | |
| 492 | memcpy_toio(priv->base + RAM_INITBASE, &block, sizeof(block)); |
| 493 | |
| 494 | /* initialize LANCE. Implicitly sets up other structures in RAM. */ |
| 495 | |
| 496 | InitLANCE(dev); |
| 497 | } |
| 498 | |
| 499 | /* deinitialize card and LANCE */ |
| 500 | |
| 501 | static void DeinitBoard(struct net_device *dev) |
| 502 | { |
| 503 | /* stop LANCE */ |
| 504 | |
| 505 | StopLANCE(dev); |
| 506 | |
| 507 | /* reset board */ |
| 508 | |
| 509 | ResetBoard(dev); |
| 510 | } |
| 511 | |
| 512 | /* probe for device's irq */ |
| 513 | |
| 514 | static int __init ProbeIRQ(struct net_device *dev) |
| 515 | { |
| 516 | unsigned long imaskval, njiffies, irq; |
| 517 | u16 csr0val; |
| 518 | |
| 519 | /* enable all interrupts */ |
| 520 | |
| 521 | imaskval = probe_irq_on(); |
| 522 | |
| 523 | /* initialize the board. Wait for interrupt 'Initialization done'. */ |
| 524 | |
| 525 | ResetBoard(dev); |
| 526 | InitBoard(dev); |
| 527 | |
| 528 | njiffies = jiffies + HZ; |
| 529 | do { |
| 530 | csr0val = GetLANCE(dev, LANCE_CSR0); |
| 531 | } |
| 532 | while (((csr0val & CSR0_IDON) == 0) && (jiffies != njiffies)); |
| 533 | |
| 534 | /* turn of interrupts again */ |
| 535 | |
| 536 | irq = probe_irq_off(imaskval); |
| 537 | |
| 538 | /* if we found something, ack the interrupt */ |
| 539 | |
| 540 | if (irq) |
| 541 | SetLANCE(dev, LANCE_CSR0, csr0val | CSR0_IDON); |
| 542 | |
| 543 | /* back to idle state */ |
| 544 | |
| 545 | DeinitBoard(dev); |
| 546 | |
| 547 | return irq; |
| 548 | } |
| 549 | |
| 550 | /* ------------------------------------------------------------------------ |
| 551 | * interrupt handler(s) |
| 552 | * ------------------------------------------------------------------------ */ |
| 553 | |
| 554 | /* LANCE has read initialization block -> start it */ |
| 555 | |
| 556 | static u16 irqstart_handler(struct net_device *dev, u16 oldcsr0) |
| 557 | { |
| 558 | /* now we're ready to transmit */ |
| 559 | |
| 560 | netif_wake_queue(dev); |
| 561 | |
| 562 | /* reset IDON bit, start LANCE */ |
| 563 | |
| 564 | SetLANCE(dev, LANCE_CSR0, oldcsr0 | CSR0_IDON | CSR0_STRT); |
| 565 | return GetLANCE(dev, LANCE_CSR0); |
| 566 | } |
| 567 | |
| 568 | /* did we lose blocks due to a FIFO overrun ? */ |
| 569 | |
| 570 | static u16 irqmiss_handler(struct net_device *dev, u16 oldcsr0) |
| 571 | { |
| 572 | skmca_priv *priv = netdev_priv(dev); |
| 573 | |
| 574 | /* update statistics */ |
| 575 | |
| 576 | priv->stat.rx_fifo_errors++; |
| 577 | |
| 578 | /* reset MISS bit */ |
| 579 | |
| 580 | SetLANCE(dev, LANCE_CSR0, oldcsr0 | CSR0_MISS); |
| 581 | return GetLANCE(dev, LANCE_CSR0); |
| 582 | } |
| 583 | |
| 584 | /* receive interrupt */ |
| 585 | |
| 586 | static u16 irqrx_handler(struct net_device *dev, u16 oldcsr0) |
| 587 | { |
| 588 | skmca_priv *priv = netdev_priv(dev); |
| 589 | LANCE_RxDescr descr; |
| 590 | unsigned int descraddr; |
| 591 | |
| 592 | /* run through queue until we reach a descriptor we do not own */ |
| 593 | |
| 594 | descraddr = RAM_RXBASE + (priv->nextrx * sizeof(LANCE_RxDescr)); |
| 595 | while (1) { |
| 596 | /* read descriptor */ |
| 597 | memcpy_fromio(&descr, priv->base + descraddr, |
| 598 | sizeof(LANCE_RxDescr)); |
| 599 | |
| 600 | /* if we reach a descriptor we do not own, we're done */ |
| 601 | if ((descr.Flags & RXDSCR_FLAGS_OWN) != 0) |
| 602 | break; |
| 603 | |
| 604 | #ifdef DEBUG |
| 605 | PrTime(); |
| 606 | printk("Receive packet on descr %d len %d\n", priv->nextrx, |
| 607 | descr.Len); |
| 608 | #endif |
| 609 | |
| 610 | /* erroneous packet ? */ |
| 611 | if ((descr.Flags & RXDSCR_FLAGS_ERR) != 0) { |
| 612 | priv->stat.rx_errors++; |
| 613 | if ((descr.Flags & RXDSCR_FLAGS_CRC) != 0) |
| 614 | priv->stat.rx_crc_errors++; |
| 615 | else if ((descr.Flags & RXDSCR_FLAGS_CRC) != 0) |
| 616 | priv->stat.rx_frame_errors++; |
| 617 | else if ((descr.Flags & RXDSCR_FLAGS_OFLO) != 0) |
| 618 | priv->stat.rx_fifo_errors++; |
| 619 | } |
| 620 | |
| 621 | /* good packet ? */ |
| 622 | else { |
| 623 | struct sk_buff *skb; |
| 624 | |
| 625 | skb = dev_alloc_skb(descr.Len + 2); |
| 626 | if (skb == NULL) |
| 627 | priv->stat.rx_dropped++; |
| 628 | else { |
| 629 | memcpy_fromio(skb_put(skb, descr.Len), |
| 630 | priv->base + |
| 631 | descr.LowAddr, descr.Len); |
| 632 | skb->dev = dev; |
| 633 | skb->protocol = eth_type_trans(skb, dev); |
| 634 | skb->ip_summed = CHECKSUM_NONE; |
| 635 | priv->stat.rx_packets++; |
| 636 | priv->stat.rx_bytes += descr.Len; |
| 637 | netif_rx(skb); |
| 638 | dev->last_rx = jiffies; |
| 639 | } |
| 640 | } |
| 641 | |
| 642 | /* give descriptor back to LANCE */ |
| 643 | descr.Len = 0; |
| 644 | descr.Flags |= RXDSCR_FLAGS_OWN; |
| 645 | |
| 646 | /* update descriptor in shared RAM */ |
| 647 | memcpy_toio(priv->base + descraddr, &descr, |
| 648 | sizeof(LANCE_RxDescr)); |
| 649 | |
| 650 | /* go to next descriptor */ |
| 651 | priv->nextrx++; |
| 652 | descraddr += sizeof(LANCE_RxDescr); |
| 653 | if (priv->nextrx >= RXCOUNT) { |
| 654 | priv->nextrx = 0; |
| 655 | descraddr = RAM_RXBASE; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | /* reset RINT bit */ |
| 660 | |
| 661 | SetLANCE(dev, LANCE_CSR0, oldcsr0 | CSR0_RINT); |
| 662 | return GetLANCE(dev, LANCE_CSR0); |
| 663 | } |
| 664 | |
| 665 | /* transmit interrupt */ |
| 666 | |
| 667 | static u16 irqtx_handler(struct net_device *dev, u16 oldcsr0) |
| 668 | { |
| 669 | skmca_priv *priv = netdev_priv(dev); |
| 670 | LANCE_TxDescr descr; |
| 671 | unsigned int descraddr; |
| 672 | |
| 673 | /* check descriptors at most until no busy one is left */ |
| 674 | |
| 675 | descraddr = |
| 676 | RAM_TXBASE + (priv->nexttxdone * sizeof(LANCE_TxDescr)); |
| 677 | while (priv->txbusy > 0) { |
| 678 | /* read descriptor */ |
| 679 | memcpy_fromio(&descr, priv->base + descraddr, |
| 680 | sizeof(LANCE_TxDescr)); |
| 681 | |
| 682 | /* if the LANCE still owns this one, we've worked out all sent packets */ |
| 683 | if ((descr.Flags & TXDSCR_FLAGS_OWN) != 0) |
| 684 | break; |
| 685 | |
| 686 | #ifdef DEBUG |
| 687 | PrTime(); |
| 688 | printk("Send packet done on descr %d\n", priv->nexttxdone); |
| 689 | #endif |
| 690 | |
| 691 | /* update statistics */ |
| 692 | if ((descr.Flags & TXDSCR_FLAGS_ERR) == 0) { |
| 693 | priv->stat.tx_packets++; |
| 694 | priv->stat.tx_bytes++; |
| 695 | } else { |
| 696 | priv->stat.tx_errors++; |
| 697 | if ((descr.Status & TXDSCR_STATUS_UFLO) != 0) { |
| 698 | priv->stat.tx_fifo_errors++; |
| 699 | InitLANCE(dev); |
| 700 | } |
| 701 | else |
| 702 | if ((descr.Status & TXDSCR_STATUS_LCOL) != |
| 703 | 0) priv->stat.tx_window_errors++; |
| 704 | else if ((descr.Status & TXDSCR_STATUS_LCAR) != 0) |
| 705 | priv->stat.tx_carrier_errors++; |
| 706 | else if ((descr.Status & TXDSCR_STATUS_RTRY) != 0) |
| 707 | priv->stat.tx_aborted_errors++; |
| 708 | } |
| 709 | |
| 710 | /* go to next descriptor */ |
| 711 | priv->nexttxdone++; |
| 712 | descraddr += sizeof(LANCE_TxDescr); |
| 713 | if (priv->nexttxdone >= TXCOUNT) { |
| 714 | priv->nexttxdone = 0; |
| 715 | descraddr = RAM_TXBASE; |
| 716 | } |
| 717 | priv->txbusy--; |
| 718 | } |
| 719 | |
| 720 | /* reset TX interrupt bit */ |
| 721 | |
| 722 | SetLANCE(dev, LANCE_CSR0, oldcsr0 | CSR0_TINT); |
| 723 | oldcsr0 = GetLANCE(dev, LANCE_CSR0); |
| 724 | |
| 725 | /* at least one descriptor is freed. Therefore we can accept |
| 726 | a new one */ |
| 727 | /* inform upper layers we're in business again */ |
| 728 | |
| 729 | netif_wake_queue(dev); |
| 730 | |
| 731 | return oldcsr0; |
| 732 | } |
| 733 | |
| 734 | /* general interrupt entry */ |
| 735 | |
| 736 | static irqreturn_t irq_handler(int irq, void *device, struct pt_regs *regs) |
| 737 | { |
| 738 | struct net_device *dev = (struct net_device *) device; |
| 739 | u16 csr0val; |
| 740 | |
| 741 | /* read CSR0 to get interrupt cause */ |
| 742 | |
| 743 | csr0val = GetLANCE(dev, LANCE_CSR0); |
| 744 | |
| 745 | /* in case we're not meant... */ |
| 746 | |
| 747 | if ((csr0val & CSR0_INTR) == 0) |
| 748 | return IRQ_NONE; |
| 749 | |
| 750 | #if 0 |
| 751 | set_bit(LINK_STATE_RXSEM, &dev->state); |
| 752 | #endif |
| 753 | |
| 754 | /* loop through the interrupt bits until everything is clear */ |
| 755 | |
| 756 | do { |
| 757 | if ((csr0val & CSR0_IDON) != 0) |
| 758 | csr0val = irqstart_handler(dev, csr0val); |
| 759 | if ((csr0val & CSR0_RINT) != 0) |
| 760 | csr0val = irqrx_handler(dev, csr0val); |
| 761 | if ((csr0val & CSR0_MISS) != 0) |
| 762 | csr0val = irqmiss_handler(dev, csr0val); |
| 763 | if ((csr0val & CSR0_TINT) != 0) |
| 764 | csr0val = irqtx_handler(dev, csr0val); |
| 765 | if ((csr0val & CSR0_MERR) != 0) { |
| 766 | SetLANCE(dev, LANCE_CSR0, csr0val | CSR0_MERR); |
| 767 | csr0val = GetLANCE(dev, LANCE_CSR0); |
| 768 | } |
| 769 | if ((csr0val & CSR0_BABL) != 0) { |
| 770 | SetLANCE(dev, LANCE_CSR0, csr0val | CSR0_BABL); |
| 771 | csr0val = GetLANCE(dev, LANCE_CSR0); |
| 772 | } |
| 773 | } |
| 774 | while ((csr0val & CSR0_INTR) != 0); |
| 775 | |
| 776 | #if 0 |
| 777 | clear_bit(LINK_STATE_RXSEM, &dev->state); |
| 778 | #endif |
| 779 | return IRQ_HANDLED; |
| 780 | } |
| 781 | |
| 782 | /* ------------------------------------------------------------------------ |
| 783 | * driver methods |
| 784 | * ------------------------------------------------------------------------ */ |
| 785 | |
| 786 | /* MCA info */ |
| 787 | |
| 788 | static int skmca_getinfo(char *buf, int slot, void *d) |
| 789 | { |
| 790 | int len = 0, i; |
| 791 | struct net_device *dev = (struct net_device *) d; |
| 792 | skmca_priv *priv; |
| 793 | |
| 794 | /* can't say anything about an uninitialized device... */ |
| 795 | |
| 796 | if (dev == NULL) |
| 797 | return len; |
| 798 | priv = netdev_priv(dev); |
| 799 | |
| 800 | /* print info */ |
| 801 | |
| 802 | len += sprintf(buf + len, "IRQ: %d\n", priv->realirq); |
| 803 | len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start, |
| 804 | dev->mem_end - 1); |
| 805 | len += |
| 806 | sprintf(buf + len, "Transceiver: %s\n", |
| 807 | MediaNames[priv->medium]); |
| 808 | len += sprintf(buf + len, "Device: %s\n", dev->name); |
| 809 | len += sprintf(buf + len, "MAC address:"); |
| 810 | for (i = 0; i < 6; i++) |
| 811 | len += sprintf(buf + len, " %02x", dev->dev_addr[i]); |
| 812 | buf[len++] = '\n'; |
| 813 | buf[len] = 0; |
| 814 | |
| 815 | return len; |
| 816 | } |
| 817 | |
| 818 | /* open driver. Means also initialization and start of LANCE */ |
| 819 | |
| 820 | static int skmca_open(struct net_device *dev) |
| 821 | { |
| 822 | int result; |
| 823 | skmca_priv *priv = netdev_priv(dev); |
| 824 | |
| 825 | /* register resources - only necessary for IRQ */ |
| 826 | result = |
| 827 | request_irq(priv->realirq, irq_handler, |
| 828 | SA_SHIRQ | SA_SAMPLE_RANDOM, "sk_mca", dev); |
| 829 | if (result != 0) { |
| 830 | printk("%s: failed to register irq %d\n", dev->name, |
| 831 | dev->irq); |
| 832 | return result; |
| 833 | } |
| 834 | dev->irq = priv->realirq; |
| 835 | |
| 836 | /* set up the card and LANCE */ |
| 837 | |
| 838 | InitBoard(dev); |
| 839 | |
| 840 | /* set up flags */ |
| 841 | |
| 842 | netif_start_queue(dev); |
| 843 | |
| 844 | return 0; |
| 845 | } |
| 846 | |
| 847 | /* close driver. Shut down board and free allocated resources */ |
| 848 | |
| 849 | static int skmca_close(struct net_device *dev) |
| 850 | { |
| 851 | /* turn off board */ |
| 852 | DeinitBoard(dev); |
| 853 | |
| 854 | /* release resources */ |
| 855 | if (dev->irq != 0) |
| 856 | free_irq(dev->irq, dev); |
| 857 | dev->irq = 0; |
| 858 | |
| 859 | return 0; |
| 860 | } |
| 861 | |
| 862 | /* transmit a block. */ |
| 863 | |
| 864 | static int skmca_tx(struct sk_buff *skb, struct net_device *dev) |
| 865 | { |
| 866 | skmca_priv *priv = netdev_priv(dev); |
| 867 | LANCE_TxDescr descr; |
| 868 | unsigned int address; |
| 869 | int tmplen, retval = 0; |
| 870 | unsigned long flags; |
| 871 | |
| 872 | /* if we get called with a NULL descriptor, the Ethernet layer thinks |
| 873 | our card is stuck an we should reset it. We'll do this completely: */ |
| 874 | |
| 875 | if (skb == NULL) { |
| 876 | DeinitBoard(dev); |
| 877 | InitBoard(dev); |
| 878 | return 0; /* don't try to free the block here ;-) */ |
| 879 | } |
| 880 | |
| 881 | /* is there space in the Tx queue ? If no, the upper layer gave us a |
| 882 | packet in spite of us not being ready and is really in trouble. |
| 883 | We'll do the dropping for him: */ |
| 884 | if (priv->txbusy >= TXCOUNT) { |
| 885 | priv->stat.tx_dropped++; |
| 886 | retval = -EIO; |
| 887 | goto tx_done; |
| 888 | } |
| 889 | |
| 890 | /* get TX descriptor */ |
| 891 | address = RAM_TXBASE + (priv->nexttxput * sizeof(LANCE_TxDescr)); |
| 892 | memcpy_fromio(&descr, priv->base + address, sizeof(LANCE_TxDescr)); |
| 893 | |
| 894 | /* enter packet length as 2s complement - assure minimum length */ |
| 895 | tmplen = skb->len; |
| 896 | if (tmplen < 60) |
| 897 | tmplen = 60; |
| 898 | descr.Len = 65536 - tmplen; |
| 899 | |
| 900 | /* copy filler into RAM - in case we're filling up... |
| 901 | we're filling a bit more than necessary, but that doesn't harm |
| 902 | since the buffer is far larger... */ |
| 903 | if (tmplen > skb->len) { |
| 904 | char *fill = "NetBSD is a nice OS too! "; |
| 905 | unsigned int destoffs = 0, l = strlen(fill); |
| 906 | |
| 907 | while (destoffs < tmplen) { |
| 908 | memcpy_toio(priv->base + descr.LowAddr + |
| 909 | destoffs, fill, l); |
| 910 | destoffs += l; |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | /* do the real data copying */ |
| 915 | memcpy_toio(priv->base + descr.LowAddr, skb->data, skb->len); |
| 916 | |
| 917 | /* hand descriptor over to LANCE - this is the first and last chunk */ |
| 918 | descr.Flags = |
| 919 | TXDSCR_FLAGS_OWN | TXDSCR_FLAGS_STP | TXDSCR_FLAGS_ENP; |
| 920 | |
| 921 | #ifdef DEBUG |
| 922 | PrTime(); |
| 923 | printk("Send packet on descr %d len %d\n", priv->nexttxput, |
| 924 | skb->len); |
| 925 | #endif |
| 926 | |
| 927 | /* one more descriptor busy */ |
| 928 | |
| 929 | spin_lock_irqsave(&priv->lock, flags); |
| 930 | |
| 931 | priv->nexttxput++; |
| 932 | if (priv->nexttxput >= TXCOUNT) |
| 933 | priv->nexttxput = 0; |
| 934 | priv->txbusy++; |
| 935 | |
| 936 | /* are we saturated ? */ |
| 937 | |
| 938 | if (priv->txbusy >= TXCOUNT) |
| 939 | netif_stop_queue(dev); |
| 940 | |
| 941 | /* write descriptor back to RAM */ |
| 942 | memcpy_toio(priv->base + address, &descr, sizeof(LANCE_TxDescr)); |
| 943 | |
| 944 | /* if no descriptors were active, give the LANCE a hint to read it |
| 945 | immediately */ |
| 946 | |
| 947 | if (priv->txbusy == 0) |
| 948 | SetLANCE(dev, LANCE_CSR0, CSR0_INEA | CSR0_TDMD); |
| 949 | |
| 950 | spin_unlock_irqrestore(&priv->lock, flags); |
| 951 | |
| 952 | tx_done: |
| 953 | |
| 954 | dev_kfree_skb(skb); |
| 955 | |
| 956 | return retval; |
| 957 | } |
| 958 | |
| 959 | /* return pointer to Ethernet statistics */ |
| 960 | |
| 961 | static struct net_device_stats *skmca_stats(struct net_device *dev) |
| 962 | { |
| 963 | skmca_priv *priv = netdev_priv(dev); |
| 964 | |
| 965 | return &(priv->stat); |
| 966 | } |
| 967 | |
| 968 | /* switch receiver mode. We use the LANCE's multicast filter to prefilter |
| 969 | multicast addresses. */ |
| 970 | |
| 971 | static void skmca_set_multicast_list(struct net_device *dev) |
| 972 | { |
| 973 | skmca_priv *priv = netdev_priv(dev); |
| 974 | LANCE_InitBlock block; |
| 975 | |
| 976 | /* first stop the LANCE... */ |
| 977 | StopLANCE(dev); |
| 978 | |
| 979 | /* ...then modify the initialization block... */ |
| 980 | memcpy_fromio(&block, priv->base + RAM_INITBASE, sizeof(block)); |
| 981 | if (dev->flags & IFF_PROMISC) |
| 982 | block.Mode |= LANCE_INIT_PROM; |
| 983 | else |
| 984 | block.Mode &= ~LANCE_INIT_PROM; |
| 985 | |
| 986 | if (dev->flags & IFF_ALLMULTI) { /* get all multicasts */ |
| 987 | memset(block.LAdrF, 0xff, sizeof(block.LAdrF)); |
| 988 | } else { /* get selected/no multicasts */ |
| 989 | |
| 990 | struct dev_mc_list *mptr; |
| 991 | int code; |
| 992 | |
| 993 | memset(block.LAdrF, 0, sizeof(block.LAdrF)); |
| 994 | for (mptr = dev->mc_list; mptr != NULL; mptr = mptr->next) { |
| 995 | code = GetHash(mptr->dmi_addr); |
| 996 | block.LAdrF[(code >> 3) & 7] |= 1 << (code & 7); |
| 997 | } |
| 998 | } |
| 999 | |
| 1000 | memcpy_toio(priv->base + RAM_INITBASE, &block, sizeof(block)); |
| 1001 | |
| 1002 | /* ...then reinit LANCE with the correct flags */ |
| 1003 | InitLANCE(dev); |
| 1004 | } |
| 1005 | |
| 1006 | /* ------------------------------------------------------------------------ |
| 1007 | * hardware check |
| 1008 | * ------------------------------------------------------------------------ */ |
| 1009 | |
| 1010 | static int startslot; /* counts through slots when probing multiple devices */ |
| 1011 | |
| 1012 | static void cleanup_card(struct net_device *dev) |
| 1013 | { |
| 1014 | skmca_priv *priv = netdev_priv(dev); |
| 1015 | DeinitBoard(dev); |
| 1016 | if (dev->irq != 0) |
| 1017 | free_irq(dev->irq, dev); |
| 1018 | iounmap(priv->base); |
| 1019 | mca_mark_as_unused(priv->slot); |
| 1020 | mca_set_adapter_procfn(priv->slot, NULL, NULL); |
| 1021 | } |
| 1022 | |
| 1023 | struct net_device * __init skmca_probe(int unit) |
| 1024 | { |
| 1025 | struct net_device *dev; |
| 1026 | int force_detect = 0; |
| 1027 | int junior, slot, i; |
| 1028 | int base = 0, irq = 0; |
| 1029 | skmca_priv *priv; |
| 1030 | skmca_medium medium; |
| 1031 | int err; |
| 1032 | |
| 1033 | /* can't work without an MCA bus ;-) */ |
| 1034 | |
| 1035 | if (MCA_bus == 0) |
| 1036 | return ERR_PTR(-ENODEV); |
| 1037 | |
| 1038 | dev = alloc_etherdev(sizeof(skmca_priv)); |
| 1039 | if (!dev) |
| 1040 | return ERR_PTR(-ENOMEM); |
| 1041 | |
| 1042 | if (unit >= 0) { |
| 1043 | sprintf(dev->name, "eth%d", unit); |
| 1044 | netdev_boot_setup_check(dev); |
| 1045 | } |
| 1046 | |
| 1047 | SET_MODULE_OWNER(dev); |
| 1048 | |
| 1049 | /* start address of 1 --> forced detection */ |
| 1050 | |
| 1051 | if (dev->mem_start == 1) |
| 1052 | force_detect = 1; |
| 1053 | |
| 1054 | /* search through slots */ |
| 1055 | |
| 1056 | base = dev->mem_start; |
| 1057 | irq = dev->base_addr; |
| 1058 | for (slot = startslot; (slot = dofind(&junior, slot)) != -1; slot++) { |
| 1059 | /* deduce card addresses */ |
| 1060 | |
| 1061 | getaddrs(slot, junior, &base, &irq, &medium); |
| 1062 | |
| 1063 | /* slot already in use ? */ |
| 1064 | |
| 1065 | if (mca_is_adapter_used(slot)) |
| 1066 | continue; |
| 1067 | |
| 1068 | /* were we looking for something different ? */ |
| 1069 | |
| 1070 | if (dev->irq && dev->irq != irq) |
| 1071 | continue; |
| 1072 | if (dev->mem_start && dev->mem_start != base) |
| 1073 | continue; |
| 1074 | |
| 1075 | /* found something that matches */ |
| 1076 | |
| 1077 | break; |
| 1078 | } |
| 1079 | |
| 1080 | /* nothing found ? */ |
| 1081 | |
| 1082 | if (slot == -1) { |
| 1083 | free_netdev(dev); |
| 1084 | return (base || irq) ? ERR_PTR(-ENXIO) : ERR_PTR(-ENODEV); |
| 1085 | } |
| 1086 | |
| 1087 | /* make procfs entries */ |
| 1088 | |
| 1089 | if (junior) |
| 1090 | mca_set_adapter_name(slot, |
| 1091 | "SKNET junior MC2 Ethernet Adapter"); |
| 1092 | else |
| 1093 | mca_set_adapter_name(slot, "SKNET MC2+ Ethernet Adapter"); |
| 1094 | mca_set_adapter_procfn(slot, (MCA_ProcFn) skmca_getinfo, dev); |
| 1095 | |
| 1096 | mca_mark_as_used(slot); |
| 1097 | |
| 1098 | /* announce success */ |
| 1099 | printk("%s: SKNet %s adapter found in slot %d\n", dev->name, |
| 1100 | junior ? "Junior MC2" : "MC2+", slot + 1); |
| 1101 | |
| 1102 | priv = netdev_priv(dev); |
| 1103 | priv->base = ioremap(base, 0x4000); |
| 1104 | if (!priv->base) { |
| 1105 | mca_set_adapter_procfn(slot, NULL, NULL); |
| 1106 | mca_mark_as_unused(slot); |
| 1107 | free_netdev(dev); |
| 1108 | return ERR_PTR(-ENOMEM); |
| 1109 | } |
| 1110 | |
| 1111 | priv->slot = slot; |
| 1112 | priv->macbase = priv->base + 0x3fc0; |
| 1113 | priv->ioregaddr = priv->base + 0x3ff0; |
| 1114 | priv->ctrladdr = priv->base + 0x3ff2; |
| 1115 | priv->cmdaddr = priv->base + 0x3ff3; |
| 1116 | priv->medium = medium; |
| 1117 | memset(&priv->stat, 0, sizeof(struct net_device_stats)); |
| 1118 | spin_lock_init(&priv->lock); |
| 1119 | |
| 1120 | /* set base + irq for this device (irq not allocated so far) */ |
| 1121 | dev->irq = 0; |
| 1122 | dev->mem_start = base; |
| 1123 | dev->mem_end = base + 0x4000; |
| 1124 | |
| 1125 | /* autoprobe ? */ |
| 1126 | if (irq < 0) { |
| 1127 | int nirq; |
| 1128 | |
| 1129 | printk |
| 1130 | ("%s: ambigous POS bit combination, must probe for IRQ...\n", |
| 1131 | dev->name); |
| 1132 | nirq = ProbeIRQ(dev); |
| 1133 | if (nirq <= 0) |
| 1134 | printk("%s: IRQ probe failed, assuming IRQ %d", |
| 1135 | dev->name, priv->realirq = -irq); |
| 1136 | else |
| 1137 | priv->realirq = nirq; |
| 1138 | } else |
| 1139 | priv->realirq = irq; |
| 1140 | |
| 1141 | /* set methods */ |
| 1142 | dev->open = skmca_open; |
| 1143 | dev->stop = skmca_close; |
| 1144 | dev->hard_start_xmit = skmca_tx; |
| 1145 | dev->do_ioctl = NULL; |
| 1146 | dev->get_stats = skmca_stats; |
| 1147 | dev->set_multicast_list = skmca_set_multicast_list; |
| 1148 | dev->flags |= IFF_MULTICAST; |
| 1149 | |
| 1150 | /* copy out MAC address */ |
| 1151 | for (i = 0; i < 6; i++) |
| 1152 | dev->dev_addr[i] = readb(priv->macbase + (i << 1)); |
| 1153 | |
| 1154 | /* print config */ |
| 1155 | printk("%s: IRQ %d, memory %#lx-%#lx, " |
| 1156 | "MAC address %02x:%02x:%02x:%02x:%02x:%02x.\n", |
| 1157 | dev->name, priv->realirq, dev->mem_start, dev->mem_end - 1, |
| 1158 | dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], |
| 1159 | dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); |
| 1160 | printk("%s: %s medium\n", dev->name, MediaNames[priv->medium]); |
| 1161 | |
| 1162 | /* reset board */ |
| 1163 | |
| 1164 | ResetBoard(dev); |
| 1165 | |
| 1166 | startslot = slot + 1; |
| 1167 | |
| 1168 | err = register_netdev(dev); |
| 1169 | if (err) { |
| 1170 | cleanup_card(dev); |
| 1171 | free_netdev(dev); |
| 1172 | dev = ERR_PTR(err); |
| 1173 | } |
| 1174 | return dev; |
| 1175 | } |
| 1176 | |
| 1177 | /* ------------------------------------------------------------------------ |
| 1178 | * modularization support |
| 1179 | * ------------------------------------------------------------------------ */ |
| 1180 | |
| 1181 | #ifdef MODULE |
| 1182 | MODULE_LICENSE("GPL"); |
| 1183 | |
| 1184 | #define DEVMAX 5 |
| 1185 | |
| 1186 | static struct net_device *moddevs[DEVMAX]; |
| 1187 | |
| 1188 | int init_module(void) |
| 1189 | { |
| 1190 | int z; |
| 1191 | |
| 1192 | startslot = 0; |
| 1193 | for (z = 0; z < DEVMAX; z++) { |
| 1194 | struct net_device *dev = skmca_probe(-1); |
| 1195 | if (IS_ERR(dev)) |
| 1196 | break; |
| 1197 | moddevs[z] = dev; |
| 1198 | } |
| 1199 | if (!z) |
| 1200 | return -EIO; |
| 1201 | return 0; |
| 1202 | } |
| 1203 | |
| 1204 | void cleanup_module(void) |
| 1205 | { |
| 1206 | int z; |
| 1207 | |
| 1208 | for (z = 0; z < DEVMAX; z++) { |
| 1209 | struct net_device *dev = moddevs[z]; |
| 1210 | if (dev) { |
| 1211 | unregister_netdev(dev); |
| 1212 | cleanup_card(dev); |
| 1213 | free_netdev(dev); |
| 1214 | } |
| 1215 | } |
| 1216 | } |
| 1217 | #endif /* MODULE */ |