1 /* 2 * 7990.c -- LANCE ethernet IC generic routines. 3 * This is an attempt to separate out the bits of various ethernet 4 * drivers that are common because they all use the AMD 7990 LANCE 5 * (Local Area Network Controller for Ethernet) chip. 6 * 7 * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> 8 * 9 * Most of this stuff was obtained by looking at other LANCE drivers, 10 * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful. 11 * NB: this was made easy by the fact that Jes Sorensen had cleaned up 12 * most of a2025 and sunlance with the aim of merging them, so the 13 * common code was pretty obvious. 14 */ 15 #include <linux/crc32.h> 16 #include <linux/delay.h> 17 #include <linux/errno.h> 18 #include <linux/netdevice.h> 19 #include <linux/etherdevice.h> 20 #include <linux/init.h> 21 #include <linux/module.h> 22 #include <linux/kernel.h> 23 #include <linux/types.h> 24 #include <linux/fcntl.h> 25 #include <linux/interrupt.h> 26 #include <linux/ioport.h> 27 #include <linux/in.h> 28 #include <linux/route.h> 29 #include <linux/string.h> 30 #include <linux/skbuff.h> 31 #include <asm/irq.h> 32 /* Used for the temporal inet entries and routing */ 33 #include <linux/socket.h> 34 #include <linux/bitops.h> 35 36 #include <asm/io.h> 37 #include <asm/dma.h> 38 #include <asm/pgtable.h> 39 #ifdef CONFIG_HP300 40 #include <asm/blinken.h> 41 #endif 42 43 #include "7990.h" 44 45 #define WRITERAP(lp,x) out_be16(lp->base + LANCE_RAP, (x)) 46 #define WRITERDP(lp,x) out_be16(lp->base + LANCE_RDP, (x)) 47 #define READRDP(lp) in_be16(lp->base + LANCE_RDP) 48 49 #if defined(CONFIG_HPLANCE) || defined(CONFIG_HPLANCE_MODULE) 50 #include "hplance.h" 51 52 #undef WRITERAP 53 #undef WRITERDP 54 #undef READRDP 55 56 #if defined(CONFIG_MVME147_NET) || defined(CONFIG_MVME147_NET_MODULE) 57 58 /* Lossage Factor Nine, Mr Sulu. */ 59 #define WRITERAP(lp,x) (lp->writerap(lp,x)) 60 #define WRITERDP(lp,x) (lp->writerdp(lp,x)) 61 #define READRDP(lp) (lp->readrdp(lp)) 62 63 #else 64 65 /* These inlines can be used if only CONFIG_HPLANCE is defined */ 66 static inline void WRITERAP(struct lance_private *lp, __u16 value) 67 { 68 do { 69 out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value); 70 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); 71 } 72 73 static inline void WRITERDP(struct lance_private *lp, __u16 value) 74 { 75 do { 76 out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value); 77 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); 78 } 79 80 static inline __u16 READRDP(struct lance_private *lp) 81 { 82 __u16 value; 83 do { 84 value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP); 85 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); 86 return value; 87 } 88 89 #endif 90 #endif /* CONFIG_HPLANCE || CONFIG_HPLANCE_MODULE */ 91 92 /* debugging output macros, various flavours */ 93 /* #define TEST_HITS */ 94 #ifdef UNDEF 95 #define PRINT_RINGS() \ 96 do { \ 97 int t; \ 98 for (t=0; t < RX_RING_SIZE; t++) { \ 99 printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n",\ 100 t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0,\ 101 ib->brx_ring[t].length,\ 102 ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits);\ 103 }\ 104 for (t=0; t < TX_RING_SIZE; t++) { \ 105 printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n",\ 106 t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0,\ 107 ib->btx_ring[t].length,\ 108 ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits);\ 109 }\ 110 } while (0) 111 #else 112 #define PRINT_RINGS() 113 #endif 114 115 /* Load the CSR registers. The LANCE has to be STOPped when we do this! */ 116 static void load_csrs (struct lance_private *lp) 117 { 118 volatile struct lance_init_block *aib = lp->lance_init_block; 119 int leptr; 120 121 leptr = LANCE_ADDR (aib); 122 123 WRITERAP(lp, LE_CSR1); /* load address of init block */ 124 WRITERDP(lp, leptr & 0xFFFF); 125 WRITERAP(lp, LE_CSR2); 126 WRITERDP(lp, leptr >> 16); 127 WRITERAP(lp, LE_CSR3); 128 WRITERDP(lp, lp->busmaster_regval); /* set byteswap/ALEctrl/byte ctrl */ 129 130 /* Point back to csr0 */ 131 WRITERAP(lp, LE_CSR0); 132 } 133 134 /* #define to 0 or 1 appropriately */ 135 #define DEBUG_IRING 0 136 /* Set up the Lance Rx and Tx rings and the init block */ 137 static void lance_init_ring (struct net_device *dev) 138 { 139 struct lance_private *lp = netdev_priv(dev); 140 volatile struct lance_init_block *ib = lp->init_block; 141 volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */ 142 int leptr; 143 int i; 144 145 aib = lp->lance_init_block; 146 147 lp->rx_new = lp->tx_new = 0; 148 lp->rx_old = lp->tx_old = 0; 149 150 ib->mode = LE_MO_PROM; /* normal, enable Tx & Rx */ 151 152 /* Copy the ethernet address to the lance init block 153 * Notice that we do a byteswap if we're big endian. 154 * [I think this is the right criterion; at least, sunlance, 155 * a2065 and atarilance do the byteswap and lance.c (PC) doesn't. 156 * However, the datasheet says that the BSWAP bit doesn't affect 157 * the init block, so surely it should be low byte first for 158 * everybody? Um.] 159 * We could define the ib->physaddr as three 16bit values and 160 * use (addr[1] << 8) | addr[0] & co, but this is more efficient. 161 */ 162 #ifdef __BIG_ENDIAN 163 ib->phys_addr [0] = dev->dev_addr [1]; 164 ib->phys_addr [1] = dev->dev_addr [0]; 165 ib->phys_addr [2] = dev->dev_addr [3]; 166 ib->phys_addr [3] = dev->dev_addr [2]; 167 ib->phys_addr [4] = dev->dev_addr [5]; 168 ib->phys_addr [5] = dev->dev_addr [4]; 169 #else 170 for (i=0; i<6; i++) 171 ib->phys_addr[i] = dev->dev_addr[i]; 172 #endif 173 174 if (DEBUG_IRING) 175 printk ("TX rings:\n"); 176 177 lp->tx_full = 0; 178 /* Setup the Tx ring entries */ 179 for (i = 0; i < (1<<lp->lance_log_tx_bufs); i++) { 180 leptr = LANCE_ADDR(&aib->tx_buf[i][0]); 181 ib->btx_ring [i].tmd0 = leptr; 182 ib->btx_ring [i].tmd1_hadr = leptr >> 16; 183 ib->btx_ring [i].tmd1_bits = 0; 184 ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */ 185 ib->btx_ring [i].misc = 0; 186 if (DEBUG_IRING) 187 printk ("%d: 0x%8.8x\n", i, leptr); 188 } 189 190 /* Setup the Rx ring entries */ 191 if (DEBUG_IRING) 192 printk ("RX rings:\n"); 193 for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) { 194 leptr = LANCE_ADDR(&aib->rx_buf[i][0]); 195 196 ib->brx_ring [i].rmd0 = leptr; 197 ib->brx_ring [i].rmd1_hadr = leptr >> 16; 198 ib->brx_ring [i].rmd1_bits = LE_R1_OWN; 199 /* 0xf000 == bits that must be one (reserved, presumably) */ 200 ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000; 201 ib->brx_ring [i].mblength = 0; 202 if (DEBUG_IRING) 203 printk ("%d: 0x%8.8x\n", i, leptr); 204 } 205 206 /* Setup the initialization block */ 207 208 /* Setup rx descriptor pointer */ 209 leptr = LANCE_ADDR(&aib->brx_ring); 210 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); 211 ib->rx_ptr = leptr; 212 if (DEBUG_IRING) 213 printk ("RX ptr: %8.8x\n", leptr); 214 215 /* Setup tx descriptor pointer */ 216 leptr = LANCE_ADDR(&aib->btx_ring); 217 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); 218 ib->tx_ptr = leptr; 219 if (DEBUG_IRING) 220 printk ("TX ptr: %8.8x\n", leptr); 221 222 /* Clear the multicast filter */ 223 ib->filter [0] = 0; 224 ib->filter [1] = 0; 225 PRINT_RINGS(); 226 } 227 228 /* LANCE must be STOPped before we do this, too... */ 229 static int init_restart_lance (struct lance_private *lp) 230 { 231 int i; 232 233 WRITERAP(lp, LE_CSR0); 234 WRITERDP(lp, LE_C0_INIT); 235 236 /* Need a hook here for sunlance ledma stuff */ 237 238 /* Wait for the lance to complete initialization */ 239 for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++) 240 barrier(); 241 if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) { 242 printk ("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp)); 243 return -1; 244 } 245 246 /* Clear IDON by writing a "1", enable interrupts and start lance */ 247 WRITERDP(lp, LE_C0_IDON); 248 WRITERDP(lp, LE_C0_INEA | LE_C0_STRT); 249 250 return 0; 251 } 252 253 static int lance_reset (struct net_device *dev) 254 { 255 struct lance_private *lp = netdev_priv(dev); 256 int status; 257 258 /* Stop the lance */ 259 WRITERAP(lp, LE_CSR0); 260 WRITERDP(lp, LE_C0_STOP); 261 262 load_csrs (lp); 263 lance_init_ring (dev); 264 dev->trans_start = jiffies; /* prevent tx timeout */ 265 status = init_restart_lance (lp); 266 #ifdef DEBUG_DRIVER 267 printk ("Lance restart=%d\n", status); 268 #endif 269 return status; 270 } 271 272 static int lance_rx (struct net_device *dev) 273 { 274 struct lance_private *lp = netdev_priv(dev); 275 volatile struct lance_init_block *ib = lp->init_block; 276 volatile struct lance_rx_desc *rd; 277 unsigned char bits; 278 #ifdef TEST_HITS 279 int i; 280 #endif 281 282 #ifdef TEST_HITS 283 printk ("["); 284 for (i = 0; i < RX_RING_SIZE; i++) { 285 if (i == lp->rx_new) 286 printk ("%s", 287 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X"); 288 else 289 printk ("%s", 290 ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1"); 291 } 292 printk ("]"); 293 #endif 294 #ifdef CONFIG_HP300 295 blinken_leds(0x40, 0); 296 #endif 297 WRITERDP(lp, LE_C0_RINT | LE_C0_INEA); /* ack Rx int, reenable ints */ 298 for (rd = &ib->brx_ring [lp->rx_new]; /* For each Rx ring we own... */ 299 !((bits = rd->rmd1_bits) & LE_R1_OWN); 300 rd = &ib->brx_ring [lp->rx_new]) { 301 302 /* We got an incomplete frame? */ 303 if ((bits & LE_R1_POK) != LE_R1_POK) { 304 dev->stats.rx_over_errors++; 305 dev->stats.rx_errors++; 306 continue; 307 } else if (bits & LE_R1_ERR) { 308 /* Count only the end frame as a rx error, 309 * not the beginning 310 */ 311 if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; 312 if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; 313 if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; 314 if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; 315 if (bits & LE_R1_EOP) dev->stats.rx_errors++; 316 } else { 317 int len = (rd->mblength & 0xfff) - 4; 318 struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); 319 320 if (!skb) { 321 dev->stats.rx_dropped++; 322 rd->mblength = 0; 323 rd->rmd1_bits = LE_R1_OWN; 324 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 325 return 0; 326 } 327 328 skb_reserve (skb, 2); /* 16 byte align */ 329 skb_put (skb, len); /* make room */ 330 skb_copy_to_linear_data(skb, 331 (unsigned char *)&(ib->rx_buf [lp->rx_new][0]), 332 len); 333 skb->protocol = eth_type_trans (skb, dev); 334 netif_rx (skb); 335 dev->stats.rx_packets++; 336 dev->stats.rx_bytes += len; 337 } 338 339 /* Return the packet to the pool */ 340 rd->mblength = 0; 341 rd->rmd1_bits = LE_R1_OWN; 342 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 343 } 344 return 0; 345 } 346 347 static int lance_tx (struct net_device *dev) 348 { 349 struct lance_private *lp = netdev_priv(dev); 350 volatile struct lance_init_block *ib = lp->init_block; 351 volatile struct lance_tx_desc *td; 352 int i, j; 353 int status; 354 355 #ifdef CONFIG_HP300 356 blinken_leds(0x80, 0); 357 #endif 358 /* csr0 is 2f3 */ 359 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); 360 /* csr0 is 73 */ 361 362 j = lp->tx_old; 363 for (i = j; i != lp->tx_new; i = j) { 364 td = &ib->btx_ring [i]; 365 366 /* If we hit a packet not owned by us, stop */ 367 if (td->tmd1_bits & LE_T1_OWN) 368 break; 369 370 if (td->tmd1_bits & LE_T1_ERR) { 371 status = td->misc; 372 373 dev->stats.tx_errors++; 374 if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; 375 if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; 376 377 if (status & LE_T3_CLOS) { 378 dev->stats.tx_carrier_errors++; 379 if (lp->auto_select) { 380 lp->tpe = 1 - lp->tpe; 381 printk("%s: Carrier Lost, trying %s\n", 382 dev->name, lp->tpe?"TPE":"AUI"); 383 /* Stop the lance */ 384 WRITERAP(lp, LE_CSR0); 385 WRITERDP(lp, LE_C0_STOP); 386 lance_init_ring (dev); 387 load_csrs (lp); 388 init_restart_lance (lp); 389 return 0; 390 } 391 } 392 393 /* buffer errors and underflows turn off the transmitter */ 394 /* Restart the adapter */ 395 if (status & (LE_T3_BUF|LE_T3_UFL)) { 396 dev->stats.tx_fifo_errors++; 397 398 printk ("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 399 dev->name); 400 /* Stop the lance */ 401 WRITERAP(lp, LE_CSR0); 402 WRITERDP(lp, LE_C0_STOP); 403 lance_init_ring (dev); 404 load_csrs (lp); 405 init_restart_lance (lp); 406 return 0; 407 } 408 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { 409 /* 410 * So we don't count the packet more than once. 411 */ 412 td->tmd1_bits &= ~(LE_T1_POK); 413 414 /* One collision before packet was sent. */ 415 if (td->tmd1_bits & LE_T1_EONE) 416 dev->stats.collisions++; 417 418 /* More than one collision, be optimistic. */ 419 if (td->tmd1_bits & LE_T1_EMORE) 420 dev->stats.collisions += 2; 421 422 dev->stats.tx_packets++; 423 } 424 425 j = (j + 1) & lp->tx_ring_mod_mask; 426 } 427 lp->tx_old = j; 428 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); 429 return 0; 430 } 431 432 static irqreturn_t 433 lance_interrupt (int irq, void *dev_id) 434 { 435 struct net_device *dev = (struct net_device *)dev_id; 436 struct lance_private *lp = netdev_priv(dev); 437 int csr0; 438 439 spin_lock (&lp->devlock); 440 441 WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */ 442 csr0 = READRDP(lp); 443 444 PRINT_RINGS(); 445 446 if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */ 447 spin_unlock (&lp->devlock); 448 return IRQ_NONE; /* been generated by the Lance. */ 449 } 450 451 /* Acknowledge all the interrupt sources ASAP */ 452 WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT)); 453 454 if ((csr0 & LE_C0_ERR)) { 455 /* Clear the error condition */ 456 WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA); 457 } 458 459 if (csr0 & LE_C0_RINT) 460 lance_rx (dev); 461 462 if (csr0 & LE_C0_TINT) 463 lance_tx (dev); 464 465 /* Log misc errors. */ 466 if (csr0 & LE_C0_BABL) 467 dev->stats.tx_errors++; /* Tx babble. */ 468 if (csr0 & LE_C0_MISS) 469 dev->stats.rx_errors++; /* Missed a Rx frame. */ 470 if (csr0 & LE_C0_MERR) { 471 printk("%s: Bus master arbitration failure, status %4.4x.\n", 472 dev->name, csr0); 473 /* Restart the chip. */ 474 WRITERDP(lp, LE_C0_STRT); 475 } 476 477 if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) { 478 lp->tx_full = 0; 479 netif_wake_queue (dev); 480 } 481 482 WRITERAP(lp, LE_CSR0); 483 WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA); 484 485 spin_unlock (&lp->devlock); 486 return IRQ_HANDLED; 487 } 488 489 int lance_open (struct net_device *dev) 490 { 491 struct lance_private *lp = netdev_priv(dev); 492 int res; 493 494 /* Install the Interrupt handler. Or we could shunt this out to specific drivers? */ 495 if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev)) 496 return -EAGAIN; 497 498 res = lance_reset(dev); 499 spin_lock_init(&lp->devlock); 500 netif_start_queue (dev); 501 502 return res; 503 } 504 EXPORT_SYMBOL_GPL(lance_open); 505 506 int lance_close (struct net_device *dev) 507 { 508 struct lance_private *lp = netdev_priv(dev); 509 510 netif_stop_queue (dev); 511 512 /* Stop the LANCE */ 513 WRITERAP(lp, LE_CSR0); 514 WRITERDP(lp, LE_C0_STOP); 515 516 free_irq(lp->irq, dev); 517 518 return 0; 519 } 520 EXPORT_SYMBOL_GPL(lance_close); 521 522 void lance_tx_timeout(struct net_device *dev) 523 { 524 printk("lance_tx_timeout\n"); 525 lance_reset(dev); 526 dev->trans_start = jiffies; /* prevent tx timeout */ 527 netif_wake_queue (dev); 528 } 529 EXPORT_SYMBOL_GPL(lance_tx_timeout); 530 531 int lance_start_xmit (struct sk_buff *skb, struct net_device *dev) 532 { 533 struct lance_private *lp = netdev_priv(dev); 534 volatile struct lance_init_block *ib = lp->init_block; 535 int entry, skblen, len; 536 static int outs; 537 unsigned long flags; 538 539 if (!TX_BUFFS_AVAIL) 540 return NETDEV_TX_LOCKED; 541 542 netif_stop_queue (dev); 543 544 skblen = skb->len; 545 546 #ifdef DEBUG_DRIVER 547 /* dump the packet */ 548 { 549 int i; 550 551 for (i = 0; i < 64; i++) { 552 if ((i % 16) == 0) 553 printk ("\n"); 554 printk ("%2.2x ", skb->data [i]); 555 } 556 } 557 #endif 558 len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; 559 entry = lp->tx_new & lp->tx_ring_mod_mask; 560 ib->btx_ring [entry].length = (-len) | 0xf000; 561 ib->btx_ring [entry].misc = 0; 562 563 if (skb->len < ETH_ZLEN) 564 memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN); 565 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); 566 567 /* Now, give the packet to the lance */ 568 ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); 569 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; 570 571 outs++; 572 /* Kick the lance: transmit now */ 573 WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD); 574 dev_kfree_skb (skb); 575 576 spin_lock_irqsave (&lp->devlock, flags); 577 if (TX_BUFFS_AVAIL) 578 netif_start_queue (dev); 579 else 580 lp->tx_full = 1; 581 spin_unlock_irqrestore (&lp->devlock, flags); 582 583 return NETDEV_TX_OK; 584 } 585 EXPORT_SYMBOL_GPL(lance_start_xmit); 586 587 /* taken from the depca driver via a2065.c */ 588 static void lance_load_multicast (struct net_device *dev) 589 { 590 struct lance_private *lp = netdev_priv(dev); 591 volatile struct lance_init_block *ib = lp->init_block; 592 volatile u16 *mcast_table = (u16 *)&ib->filter; 593 struct netdev_hw_addr *ha; 594 u32 crc; 595 596 /* set all multicast bits */ 597 if (dev->flags & IFF_ALLMULTI){ 598 ib->filter [0] = 0xffffffff; 599 ib->filter [1] = 0xffffffff; 600 return; 601 } 602 /* clear the multicast filter */ 603 ib->filter [0] = 0; 604 ib->filter [1] = 0; 605 606 /* Add addresses */ 607 netdev_for_each_mc_addr(ha, dev) { 608 crc = ether_crc_le(6, ha->addr); 609 crc = crc >> 26; 610 mcast_table [crc >> 4] |= 1 << (crc & 0xf); 611 } 612 } 613 614 615 void lance_set_multicast (struct net_device *dev) 616 { 617 struct lance_private *lp = netdev_priv(dev); 618 volatile struct lance_init_block *ib = lp->init_block; 619 int stopped; 620 621 stopped = netif_queue_stopped(dev); 622 if (!stopped) 623 netif_stop_queue (dev); 624 625 while (lp->tx_old != lp->tx_new) 626 schedule(); 627 628 WRITERAP(lp, LE_CSR0); 629 WRITERDP(lp, LE_C0_STOP); 630 lance_init_ring (dev); 631 632 if (dev->flags & IFF_PROMISC) { 633 ib->mode |= LE_MO_PROM; 634 } else { 635 ib->mode &= ~LE_MO_PROM; 636 lance_load_multicast (dev); 637 } 638 load_csrs (lp); 639 init_restart_lance (lp); 640 641 if (!stopped) 642 netif_start_queue (dev); 643 } 644 EXPORT_SYMBOL_GPL(lance_set_multicast); 645 646 #ifdef CONFIG_NET_POLL_CONTROLLER 647 void lance_poll(struct net_device *dev) 648 { 649 struct lance_private *lp = netdev_priv(dev); 650 651 spin_lock (&lp->devlock); 652 WRITERAP(lp, LE_CSR0); 653 WRITERDP(lp, LE_C0_STRT); 654 spin_unlock (&lp->devlock); 655 lance_interrupt(dev->irq, dev); 656 } 657 #endif 658 659 MODULE_LICENSE("GPL"); 660