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/module.h> 21 #include <linux/kernel.h> 22 #include <linux/types.h> 23 #include <linux/fcntl.h> 24 #include <linux/interrupt.h> 25 #include <linux/ioport.h> 26 #include <linux/in.h> 27 #include <linux/route.h> 28 #include <linux/string.h> 29 #include <linux/skbuff.h> 30 #include <asm/irq.h> 31 /* Used for the temporal inet entries and routing */ 32 #include <linux/socket.h> 33 #include <linux/bitops.h> 34 35 #include <asm/io.h> 36 #include <asm/dma.h> 37 #include <asm/pgtable.h> 38 #ifdef CONFIG_HP300 39 #include <asm/blinken.h> 40 #endif 41 42 #include "7990.h" 43 44 #define WRITERAP(lp, x) out_be16(lp->base + LANCE_RAP, (x)) 45 #define WRITERDP(lp, x) out_be16(lp->base + LANCE_RDP, (x)) 46 #define READRDP(lp) in_be16(lp->base + LANCE_RDP) 47 48 #if defined(CONFIG_HPLANCE) || defined(CONFIG_HPLANCE_MODULE) 49 #include "hplance.h" 50 51 #undef WRITERAP 52 #undef WRITERDP 53 #undef READRDP 54 55 #if defined(CONFIG_MVME147_NET) || defined(CONFIG_MVME147_NET_MODULE) 56 57 /* Lossage Factor Nine, Mr Sulu. */ 58 #define WRITERAP(lp, x) (lp->writerap(lp, x)) 59 #define WRITERDP(lp, x) (lp->writerdp(lp, x)) 60 #define READRDP(lp) (lp->readrdp(lp)) 61 62 #else 63 64 /* These inlines can be used if only CONFIG_HPLANCE is defined */ 65 static inline void WRITERAP(struct lance_private *lp, __u16 value) 66 { 67 do { 68 out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value); 69 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); 70 } 71 72 static inline void WRITERDP(struct lance_private *lp, __u16 value) 73 { 74 do { 75 out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value); 76 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); 77 } 78 79 static inline __u16 READRDP(struct lance_private *lp) 80 { 81 __u16 value; 82 do { 83 value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP); 84 } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); 85 return value; 86 } 87 88 #endif 89 #endif /* CONFIG_HPLANCE || CONFIG_HPLANCE_MODULE */ 90 91 /* debugging output macros, various flavours */ 92 /* #define TEST_HITS */ 93 #ifdef UNDEF 94 #define PRINT_RINGS() \ 95 do { \ 96 int t; \ 97 for (t = 0; t < RX_RING_SIZE; t++) { \ 98 printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n", \ 99 t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0, \ 100 ib->brx_ring[t].length, \ 101 ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits); \ 102 } \ 103 for (t = 0; t < TX_RING_SIZE; t++) { \ 104 printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n", \ 105 t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0, \ 106 ib->btx_ring[t].length, \ 107 ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits); \ 108 } \ 109 } while (0) 110 #else 111 #define PRINT_RINGS() 112 #endif 113 114 /* Load the CSR registers. The LANCE has to be STOPped when we do this! */ 115 static void load_csrs(struct lance_private *lp) 116 { 117 volatile struct lance_init_block *aib = lp->lance_init_block; 118 int leptr; 119 120 leptr = LANCE_ADDR(aib); 121 122 WRITERAP(lp, LE_CSR1); /* load address of init block */ 123 WRITERDP(lp, leptr & 0xFFFF); 124 WRITERAP(lp, LE_CSR2); 125 WRITERDP(lp, leptr >> 16); 126 WRITERAP(lp, LE_CSR3); 127 WRITERDP(lp, lp->busmaster_regval); /* set byteswap/ALEctrl/byte ctrl */ 128 129 /* Point back to csr0 */ 130 WRITERAP(lp, LE_CSR0); 131 } 132 133 /* #define to 0 or 1 appropriately */ 134 #define DEBUG_IRING 0 135 /* Set up the Lance Rx and Tx rings and the init block */ 136 static void lance_init_ring(struct net_device *dev) 137 { 138 struct lance_private *lp = netdev_priv(dev); 139 volatile struct lance_init_block *ib = lp->init_block; 140 volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */ 141 int leptr; 142 int i; 143 144 aib = lp->lance_init_block; 145 146 lp->rx_new = lp->tx_new = 0; 147 lp->rx_old = lp->tx_old = 0; 148 149 ib->mode = LE_MO_PROM; /* normal, enable Tx & Rx */ 150 151 /* Copy the ethernet address to the lance init block 152 * Notice that we do a byteswap if we're big endian. 153 * [I think this is the right criterion; at least, sunlance, 154 * a2065 and atarilance do the byteswap and lance.c (PC) doesn't. 155 * However, the datasheet says that the BSWAP bit doesn't affect 156 * the init block, so surely it should be low byte first for 157 * everybody? Um.] 158 * We could define the ib->physaddr as three 16bit values and 159 * use (addr[1] << 8) | addr[0] & co, but this is more efficient. 160 */ 161 #ifdef __BIG_ENDIAN 162 ib->phys_addr[0] = dev->dev_addr[1]; 163 ib->phys_addr[1] = dev->dev_addr[0]; 164 ib->phys_addr[2] = dev->dev_addr[3]; 165 ib->phys_addr[3] = dev->dev_addr[2]; 166 ib->phys_addr[4] = dev->dev_addr[5]; 167 ib->phys_addr[5] = dev->dev_addr[4]; 168 #else 169 for (i = 0; i < 6; i++) 170 ib->phys_addr[i] = dev->dev_addr[i]; 171 #endif 172 173 if (DEBUG_IRING) 174 printk("TX rings:\n"); 175 176 lp->tx_full = 0; 177 /* Setup the Tx ring entries */ 178 for (i = 0; i < (1 << lp->lance_log_tx_bufs); i++) { 179 leptr = LANCE_ADDR(&aib->tx_buf[i][0]); 180 ib->btx_ring[i].tmd0 = leptr; 181 ib->btx_ring[i].tmd1_hadr = leptr >> 16; 182 ib->btx_ring[i].tmd1_bits = 0; 183 ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */ 184 ib->btx_ring[i].misc = 0; 185 if (DEBUG_IRING) 186 printk("%d: 0x%8.8x\n", i, leptr); 187 } 188 189 /* Setup the Rx ring entries */ 190 if (DEBUG_IRING) 191 printk("RX rings:\n"); 192 for (i = 0; i < (1 << lp->lance_log_rx_bufs); i++) { 193 leptr = LANCE_ADDR(&aib->rx_buf[i][0]); 194 195 ib->brx_ring[i].rmd0 = leptr; 196 ib->brx_ring[i].rmd1_hadr = leptr >> 16; 197 ib->brx_ring[i].rmd1_bits = LE_R1_OWN; 198 /* 0xf000 == bits that must be one (reserved, presumably) */ 199 ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000; 200 ib->brx_ring[i].mblength = 0; 201 if (DEBUG_IRING) 202 printk("%d: 0x%8.8x\n", i, leptr); 203 } 204 205 /* Setup the initialization block */ 206 207 /* Setup rx descriptor pointer */ 208 leptr = LANCE_ADDR(&aib->brx_ring); 209 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); 210 ib->rx_ptr = leptr; 211 if (DEBUG_IRING) 212 printk("RX ptr: %8.8x\n", leptr); 213 214 /* Setup tx descriptor pointer */ 215 leptr = LANCE_ADDR(&aib->btx_ring); 216 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); 217 ib->tx_ptr = leptr; 218 if (DEBUG_IRING) 219 printk("TX ptr: %8.8x\n", leptr); 220 221 /* Clear the multicast filter */ 222 ib->filter[0] = 0; 223 ib->filter[1] = 0; 224 PRINT_RINGS(); 225 } 226 227 /* LANCE must be STOPped before we do this, too... */ 228 static int init_restart_lance(struct lance_private *lp) 229 { 230 int i; 231 232 WRITERAP(lp, LE_CSR0); 233 WRITERDP(lp, LE_C0_INIT); 234 235 /* Need a hook here for sunlance ledma stuff */ 236 237 /* Wait for the lance to complete initialization */ 238 for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++) 239 barrier(); 240 if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) { 241 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp)); 242 return -1; 243 } 244 245 /* Clear IDON by writing a "1", enable interrupts and start lance */ 246 WRITERDP(lp, LE_C0_IDON); 247 WRITERDP(lp, LE_C0_INEA | LE_C0_STRT); 248 249 return 0; 250 } 251 252 static int lance_reset(struct net_device *dev) 253 { 254 struct lance_private *lp = netdev_priv(dev); 255 int status; 256 257 /* Stop the lance */ 258 WRITERAP(lp, LE_CSR0); 259 WRITERDP(lp, LE_C0_STOP); 260 261 load_csrs(lp); 262 lance_init_ring(dev); 263 dev->trans_start = jiffies; /* prevent tx timeout */ 264 status = init_restart_lance(lp); 265 #ifdef DEBUG_DRIVER 266 printk("Lance restart=%d\n", status); 267 #endif 268 return status; 269 } 270 271 static int lance_rx(struct net_device *dev) 272 { 273 struct lance_private *lp = netdev_priv(dev); 274 volatile struct lance_init_block *ib = lp->init_block; 275 volatile struct lance_rx_desc *rd; 276 unsigned char bits; 277 #ifdef TEST_HITS 278 int i; 279 #endif 280 281 #ifdef TEST_HITS 282 printk("["); 283 for (i = 0; i < RX_RING_SIZE; i++) { 284 if (i == lp->rx_new) 285 printk("%s", 286 ib->brx_ring[i].rmd1_bits & LE_R1_OWN ? "_" : "X"); 287 else 288 printk("%s", 289 ib->brx_ring[i].rmd1_bits & LE_R1_OWN ? "." : "1"); 290 } 291 printk("]"); 292 #endif 293 #ifdef CONFIG_HP300 294 blinken_leds(0x40, 0); 295 #endif 296 WRITERDP(lp, LE_C0_RINT | LE_C0_INEA); /* ack Rx int, reenable ints */ 297 for (rd = &ib->brx_ring[lp->rx_new]; /* For each Rx ring we own... */ 298 !((bits = rd->rmd1_bits) & LE_R1_OWN); 299 rd = &ib->brx_ring[lp->rx_new]) { 300 301 /* We got an incomplete frame? */ 302 if ((bits & LE_R1_POK) != LE_R1_POK) { 303 dev->stats.rx_over_errors++; 304 dev->stats.rx_errors++; 305 continue; 306 } else if (bits & LE_R1_ERR) { 307 /* Count only the end frame as a rx error, 308 * not the beginning 309 */ 310 if (bits & LE_R1_BUF) 311 dev->stats.rx_fifo_errors++; 312 if (bits & LE_R1_CRC) 313 dev->stats.rx_crc_errors++; 314 if (bits & LE_R1_OFL) 315 dev->stats.rx_over_errors++; 316 if (bits & LE_R1_FRA) 317 dev->stats.rx_frame_errors++; 318 if (bits & LE_R1_EOP) 319 dev->stats.rx_errors++; 320 } else { 321 int len = (rd->mblength & 0xfff) - 4; 322 struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); 323 324 if (!skb) { 325 dev->stats.rx_dropped++; 326 rd->mblength = 0; 327 rd->rmd1_bits = LE_R1_OWN; 328 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 329 return 0; 330 } 331 332 skb_reserve(skb, 2); /* 16 byte align */ 333 skb_put(skb, len); /* make room */ 334 skb_copy_to_linear_data(skb, 335 (unsigned char *)&(ib->rx_buf[lp->rx_new][0]), 336 len); 337 skb->protocol = eth_type_trans(skb, dev); 338 netif_rx(skb); 339 dev->stats.rx_packets++; 340 dev->stats.rx_bytes += len; 341 } 342 343 /* Return the packet to the pool */ 344 rd->mblength = 0; 345 rd->rmd1_bits = LE_R1_OWN; 346 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 347 } 348 return 0; 349 } 350 351 static int lance_tx(struct net_device *dev) 352 { 353 struct lance_private *lp = netdev_priv(dev); 354 volatile struct lance_init_block *ib = lp->init_block; 355 volatile struct lance_tx_desc *td; 356 int i, j; 357 int status; 358 359 #ifdef CONFIG_HP300 360 blinken_leds(0x80, 0); 361 #endif 362 /* csr0 is 2f3 */ 363 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); 364 /* csr0 is 73 */ 365 366 j = lp->tx_old; 367 for (i = j; i != lp->tx_new; i = j) { 368 td = &ib->btx_ring[i]; 369 370 /* If we hit a packet not owned by us, stop */ 371 if (td->tmd1_bits & LE_T1_OWN) 372 break; 373 374 if (td->tmd1_bits & LE_T1_ERR) { 375 status = td->misc; 376 377 dev->stats.tx_errors++; 378 if (status & LE_T3_RTY) 379 dev->stats.tx_aborted_errors++; 380 if (status & LE_T3_LCOL) 381 dev->stats.tx_window_errors++; 382 383 if (status & LE_T3_CLOS) { 384 dev->stats.tx_carrier_errors++; 385 if (lp->auto_select) { 386 lp->tpe = 1 - lp->tpe; 387 printk("%s: Carrier Lost, trying %s\n", 388 dev->name, 389 lp->tpe ? "TPE" : "AUI"); 390 /* Stop the lance */ 391 WRITERAP(lp, LE_CSR0); 392 WRITERDP(lp, LE_C0_STOP); 393 lance_init_ring(dev); 394 load_csrs(lp); 395 init_restart_lance(lp); 396 return 0; 397 } 398 } 399 400 /* buffer errors and underflows turn off the transmitter */ 401 /* Restart the adapter */ 402 if (status & (LE_T3_BUF|LE_T3_UFL)) { 403 dev->stats.tx_fifo_errors++; 404 405 printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 406 dev->name); 407 /* Stop the lance */ 408 WRITERAP(lp, LE_CSR0); 409 WRITERDP(lp, LE_C0_STOP); 410 lance_init_ring(dev); 411 load_csrs(lp); 412 init_restart_lance(lp); 413 return 0; 414 } 415 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { 416 /* 417 * So we don't count the packet more than once. 418 */ 419 td->tmd1_bits &= ~(LE_T1_POK); 420 421 /* One collision before packet was sent. */ 422 if (td->tmd1_bits & LE_T1_EONE) 423 dev->stats.collisions++; 424 425 /* More than one collision, be optimistic. */ 426 if (td->tmd1_bits & LE_T1_EMORE) 427 dev->stats.collisions += 2; 428 429 dev->stats.tx_packets++; 430 } 431 432 j = (j + 1) & lp->tx_ring_mod_mask; 433 } 434 lp->tx_old = j; 435 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); 436 return 0; 437 } 438 439 static irqreturn_t 440 lance_interrupt(int irq, void *dev_id) 441 { 442 struct net_device *dev = (struct net_device *)dev_id; 443 struct lance_private *lp = netdev_priv(dev); 444 int csr0; 445 446 spin_lock(&lp->devlock); 447 448 WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */ 449 csr0 = READRDP(lp); 450 451 PRINT_RINGS(); 452 453 if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */ 454 spin_unlock(&lp->devlock); 455 return IRQ_NONE; /* been generated by the Lance. */ 456 } 457 458 /* Acknowledge all the interrupt sources ASAP */ 459 WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT)); 460 461 if ((csr0 & LE_C0_ERR)) { 462 /* Clear the error condition */ 463 WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA); 464 } 465 466 if (csr0 & LE_C0_RINT) 467 lance_rx(dev); 468 469 if (csr0 & LE_C0_TINT) 470 lance_tx(dev); 471 472 /* Log misc errors. */ 473 if (csr0 & LE_C0_BABL) 474 dev->stats.tx_errors++; /* Tx babble. */ 475 if (csr0 & LE_C0_MISS) 476 dev->stats.rx_errors++; /* Missed a Rx frame. */ 477 if (csr0 & LE_C0_MERR) { 478 printk("%s: Bus master arbitration failure, status %4.4x.\n", 479 dev->name, csr0); 480 /* Restart the chip. */ 481 WRITERDP(lp, LE_C0_STRT); 482 } 483 484 if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) { 485 lp->tx_full = 0; 486 netif_wake_queue(dev); 487 } 488 489 WRITERAP(lp, LE_CSR0); 490 WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA); 491 492 spin_unlock(&lp->devlock); 493 return IRQ_HANDLED; 494 } 495 496 int lance_open(struct net_device *dev) 497 { 498 struct lance_private *lp = netdev_priv(dev); 499 int res; 500 501 /* Install the Interrupt handler. Or we could shunt this out to specific drivers? */ 502 if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev)) 503 return -EAGAIN; 504 505 res = lance_reset(dev); 506 spin_lock_init(&lp->devlock); 507 netif_start_queue(dev); 508 509 return res; 510 } 511 EXPORT_SYMBOL_GPL(lance_open); 512 513 int lance_close(struct net_device *dev) 514 { 515 struct lance_private *lp = netdev_priv(dev); 516 517 netif_stop_queue(dev); 518 519 /* Stop the LANCE */ 520 WRITERAP(lp, LE_CSR0); 521 WRITERDP(lp, LE_C0_STOP); 522 523 free_irq(lp->irq, dev); 524 525 return 0; 526 } 527 EXPORT_SYMBOL_GPL(lance_close); 528 529 void lance_tx_timeout(struct net_device *dev) 530 { 531 printk("lance_tx_timeout\n"); 532 lance_reset(dev); 533 dev->trans_start = jiffies; /* prevent tx timeout */ 534 netif_wake_queue(dev); 535 } 536 EXPORT_SYMBOL_GPL(lance_tx_timeout); 537 538 int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) 539 { 540 struct lance_private *lp = netdev_priv(dev); 541 volatile struct lance_init_block *ib = lp->init_block; 542 int entry, skblen, len; 543 static int outs; 544 unsigned long flags; 545 546 if (!TX_BUFFS_AVAIL) 547 return NETDEV_TX_LOCKED; 548 549 netif_stop_queue(dev); 550 551 skblen = skb->len; 552 553 #ifdef DEBUG_DRIVER 554 /* dump the packet */ 555 { 556 int i; 557 558 for (i = 0; i < 64; i++) { 559 if ((i % 16) == 0) 560 printk("\n"); 561 printk("%2.2x ", skb->data[i]); 562 } 563 } 564 #endif 565 len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; 566 entry = lp->tx_new & lp->tx_ring_mod_mask; 567 ib->btx_ring[entry].length = (-len) | 0xf000; 568 ib->btx_ring[entry].misc = 0; 569 570 if (skb->len < ETH_ZLEN) 571 memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN); 572 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); 573 574 /* Now, give the packet to the lance */ 575 ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); 576 lp->tx_new = (lp->tx_new + 1) & lp->tx_ring_mod_mask; 577 578 outs++; 579 /* Kick the lance: transmit now */ 580 WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD); 581 dev_consume_skb_any(skb); 582 583 spin_lock_irqsave(&lp->devlock, flags); 584 if (TX_BUFFS_AVAIL) 585 netif_start_queue(dev); 586 else 587 lp->tx_full = 1; 588 spin_unlock_irqrestore(&lp->devlock, flags); 589 590 return NETDEV_TX_OK; 591 } 592 EXPORT_SYMBOL_GPL(lance_start_xmit); 593 594 /* taken from the depca driver via a2065.c */ 595 static void lance_load_multicast(struct net_device *dev) 596 { 597 struct lance_private *lp = netdev_priv(dev); 598 volatile struct lance_init_block *ib = lp->init_block; 599 volatile u16 *mcast_table = (u16 *)&ib->filter; 600 struct netdev_hw_addr *ha; 601 u32 crc; 602 603 /* set all multicast bits */ 604 if (dev->flags & IFF_ALLMULTI) { 605 ib->filter[0] = 0xffffffff; 606 ib->filter[1] = 0xffffffff; 607 return; 608 } 609 /* clear the multicast filter */ 610 ib->filter[0] = 0; 611 ib->filter[1] = 0; 612 613 /* Add addresses */ 614 netdev_for_each_mc_addr(ha, dev) { 615 crc = ether_crc_le(6, ha->addr); 616 crc = crc >> 26; 617 mcast_table[crc >> 4] |= 1 << (crc & 0xf); 618 } 619 } 620 621 622 void lance_set_multicast(struct net_device *dev) 623 { 624 struct lance_private *lp = netdev_priv(dev); 625 volatile struct lance_init_block *ib = lp->init_block; 626 int stopped; 627 628 stopped = netif_queue_stopped(dev); 629 if (!stopped) 630 netif_stop_queue(dev); 631 632 while (lp->tx_old != lp->tx_new) 633 schedule(); 634 635 WRITERAP(lp, LE_CSR0); 636 WRITERDP(lp, LE_C0_STOP); 637 lance_init_ring(dev); 638 639 if (dev->flags & IFF_PROMISC) { 640 ib->mode |= LE_MO_PROM; 641 } else { 642 ib->mode &= ~LE_MO_PROM; 643 lance_load_multicast(dev); 644 } 645 load_csrs(lp); 646 init_restart_lance(lp); 647 648 if (!stopped) 649 netif_start_queue(dev); 650 } 651 EXPORT_SYMBOL_GPL(lance_set_multicast); 652 653 #ifdef CONFIG_NET_POLL_CONTROLLER 654 void lance_poll(struct net_device *dev) 655 { 656 struct lance_private *lp = netdev_priv(dev); 657 658 spin_lock(&lp->devlock); 659 WRITERAP(lp, LE_CSR0); 660 WRITERDP(lp, LE_C0_STRT); 661 spin_unlock(&lp->devlock); 662 lance_interrupt(dev->irq, dev); 663 } 664 EXPORT_SYMBOL_GPL(lance_poll); 665 #endif 666 667 MODULE_LICENSE("GPL"); 668