1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * 7990.c -- LANCE ethernet IC generic routines. 4 * This is an attempt to separate out the bits of various ethernet 5 * drivers that are common because they all use the AMD 7990 LANCE 6 * (Local Area Network Controller for Ethernet) chip. 7 * 8 * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> 9 * 10 * Most of this stuff was obtained by looking at other LANCE drivers, 11 * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful. 12 * NB: this was made easy by the fact that Jes Sorensen had cleaned up 13 * most of a2025 and sunlance with the aim of merging them, so the 14 * common code was pretty obvious. 15 */ 16 #include <linux/crc32.h> 17 #include <linux/delay.h> 18 #include <linux/errno.h> 19 #include <linux/netdevice.h> 20 #include <linux/etherdevice.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 <linux/pgtable.h> 32 #include <asm/irq.h> 33 /* Used for the temporal inet entries and routing */ 34 #include <linux/socket.h> 35 #include <linux/bitops.h> 36 37 #include <asm/io.h> 38 #include <asm/dma.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 IS_ENABLED(CONFIG_HPLANCE) 50 #include "hplance.h" 51 52 #undef WRITERAP 53 #undef WRITERDP 54 #undef READRDP 55 56 #if IS_ENABLED(CONFIG_MVME147_NET) 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 /* IS_ENABLED(CONFIG_HPLANCE) */ 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 netif_trans_update(dev); /* 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) 312 dev->stats.rx_fifo_errors++; 313 if (bits & LE_R1_CRC) 314 dev->stats.rx_crc_errors++; 315 if (bits & LE_R1_OFL) 316 dev->stats.rx_over_errors++; 317 if (bits & LE_R1_FRA) 318 dev->stats.rx_frame_errors++; 319 if (bits & LE_R1_EOP) 320 dev->stats.rx_errors++; 321 } else { 322 int len = (rd->mblength & 0xfff) - 4; 323 struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); 324 325 if (!skb) { 326 dev->stats.rx_dropped++; 327 rd->mblength = 0; 328 rd->rmd1_bits = LE_R1_OWN; 329 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 330 return 0; 331 } 332 333 skb_reserve(skb, 2); /* 16 byte align */ 334 skb_put(skb, len); /* make room */ 335 skb_copy_to_linear_data(skb, 336 (unsigned char *)&(ib->rx_buf[lp->rx_new][0]), 337 len); 338 skb->protocol = eth_type_trans(skb, dev); 339 netif_rx(skb); 340 dev->stats.rx_packets++; 341 dev->stats.rx_bytes += len; 342 } 343 344 /* Return the packet to the pool */ 345 rd->mblength = 0; 346 rd->rmd1_bits = LE_R1_OWN; 347 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 348 } 349 return 0; 350 } 351 352 static int lance_tx(struct net_device *dev) 353 { 354 struct lance_private *lp = netdev_priv(dev); 355 volatile struct lance_init_block *ib = lp->init_block; 356 volatile struct lance_tx_desc *td; 357 int i, j; 358 int status; 359 360 #ifdef CONFIG_HP300 361 blinken_leds(0x80, 0); 362 #endif 363 /* csr0 is 2f3 */ 364 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); 365 /* csr0 is 73 */ 366 367 j = lp->tx_old; 368 for (i = j; i != lp->tx_new; i = j) { 369 td = &ib->btx_ring[i]; 370 371 /* If we hit a packet not owned by us, stop */ 372 if (td->tmd1_bits & LE_T1_OWN) 373 break; 374 375 if (td->tmd1_bits & LE_T1_ERR) { 376 status = td->misc; 377 378 dev->stats.tx_errors++; 379 if (status & LE_T3_RTY) 380 dev->stats.tx_aborted_errors++; 381 if (status & LE_T3_LCOL) 382 dev->stats.tx_window_errors++; 383 384 if (status & LE_T3_CLOS) { 385 dev->stats.tx_carrier_errors++; 386 if (lp->auto_select) { 387 lp->tpe = 1 - lp->tpe; 388 printk("%s: Carrier Lost, trying %s\n", 389 dev->name, 390 lp->tpe ? "TPE" : "AUI"); 391 /* Stop the lance */ 392 WRITERAP(lp, LE_CSR0); 393 WRITERDP(lp, LE_C0_STOP); 394 lance_init_ring(dev); 395 load_csrs(lp); 396 init_restart_lance(lp); 397 return 0; 398 } 399 } 400 401 /* buffer errors and underflows turn off the transmitter */ 402 /* Restart the adapter */ 403 if (status & (LE_T3_BUF|LE_T3_UFL)) { 404 dev->stats.tx_fifo_errors++; 405 406 printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 407 dev->name); 408 /* Stop the lance */ 409 WRITERAP(lp, LE_CSR0); 410 WRITERDP(lp, LE_C0_STOP); 411 lance_init_ring(dev); 412 load_csrs(lp); 413 init_restart_lance(lp); 414 return 0; 415 } 416 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { 417 /* 418 * So we don't count the packet more than once. 419 */ 420 td->tmd1_bits &= ~(LE_T1_POK); 421 422 /* One collision before packet was sent. */ 423 if (td->tmd1_bits & LE_T1_EONE) 424 dev->stats.collisions++; 425 426 /* More than one collision, be optimistic. */ 427 if (td->tmd1_bits & LE_T1_EMORE) 428 dev->stats.collisions += 2; 429 430 dev->stats.tx_packets++; 431 } 432 433 j = (j + 1) & lp->tx_ring_mod_mask; 434 } 435 lp->tx_old = j; 436 WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); 437 return 0; 438 } 439 440 static irqreturn_t 441 lance_interrupt(int irq, void *dev_id) 442 { 443 struct net_device *dev = (struct net_device *)dev_id; 444 struct lance_private *lp = netdev_priv(dev); 445 int csr0; 446 447 spin_lock(&lp->devlock); 448 449 WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */ 450 csr0 = READRDP(lp); 451 452 PRINT_RINGS(); 453 454 if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */ 455 spin_unlock(&lp->devlock); 456 return IRQ_NONE; /* been generated by the Lance. */ 457 } 458 459 /* Acknowledge all the interrupt sources ASAP */ 460 WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT)); 461 462 if ((csr0 & LE_C0_ERR)) { 463 /* Clear the error condition */ 464 WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA); 465 } 466 467 if (csr0 & LE_C0_RINT) 468 lance_rx(dev); 469 470 if (csr0 & LE_C0_TINT) 471 lance_tx(dev); 472 473 /* Log misc errors. */ 474 if (csr0 & LE_C0_BABL) 475 dev->stats.tx_errors++; /* Tx babble. */ 476 if (csr0 & LE_C0_MISS) 477 dev->stats.rx_errors++; /* Missed a Rx frame. */ 478 if (csr0 & LE_C0_MERR) { 479 printk("%s: Bus master arbitration failure, status %4.4x.\n", 480 dev->name, csr0); 481 /* Restart the chip. */ 482 WRITERDP(lp, LE_C0_STRT); 483 } 484 485 if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) { 486 lp->tx_full = 0; 487 netif_wake_queue(dev); 488 } 489 490 WRITERAP(lp, LE_CSR0); 491 WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA); 492 493 spin_unlock(&lp->devlock); 494 return IRQ_HANDLED; 495 } 496 497 int lance_open(struct net_device *dev) 498 { 499 struct lance_private *lp = netdev_priv(dev); 500 int res; 501 502 /* Install the Interrupt handler. Or we could shunt this out to specific drivers? */ 503 if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev)) 504 return -EAGAIN; 505 506 res = lance_reset(dev); 507 spin_lock_init(&lp->devlock); 508 netif_start_queue(dev); 509 510 return res; 511 } 512 EXPORT_SYMBOL_GPL(lance_open); 513 514 int lance_close(struct net_device *dev) 515 { 516 struct lance_private *lp = netdev_priv(dev); 517 518 netif_stop_queue(dev); 519 520 /* Stop the LANCE */ 521 WRITERAP(lp, LE_CSR0); 522 WRITERDP(lp, LE_C0_STOP); 523 524 free_irq(lp->irq, dev); 525 526 return 0; 527 } 528 EXPORT_SYMBOL_GPL(lance_close); 529 530 void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) 531 { 532 printk("lance_tx_timeout\n"); 533 lance_reset(dev); 534 netif_trans_update(dev); /* prevent tx timeout */ 535 netif_wake_queue(dev); 536 } 537 EXPORT_SYMBOL_GPL(lance_tx_timeout); 538 539 netdev_tx_t lance_start_xmit(struct sk_buff *skb, struct net_device *dev) 540 { 541 struct lance_private *lp = netdev_priv(dev); 542 volatile struct lance_init_block *ib = lp->init_block; 543 int entry, skblen, len; 544 static int outs; 545 unsigned long flags; 546 547 netif_stop_queue(dev); 548 549 if (!TX_BUFFS_AVAIL) { 550 dev_consume_skb_any(skb); 551 return NETDEV_TX_OK; 552 } 553 554 skblen = skb->len; 555 556 #ifdef DEBUG_DRIVER 557 /* dump the packet */ 558 { 559 int i; 560 561 for (i = 0; i < 64; i++) { 562 if ((i % 16) == 0) 563 printk("\n"); 564 printk("%2.2x ", skb->data[i]); 565 } 566 } 567 #endif 568 len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; 569 entry = lp->tx_new & lp->tx_ring_mod_mask; 570 ib->btx_ring[entry].length = (-len) | 0xf000; 571 ib->btx_ring[entry].misc = 0; 572 573 if (skb->len < ETH_ZLEN) 574 memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN); 575 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); 576 577 /* Now, give the packet to the lance */ 578 ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); 579 lp->tx_new = (lp->tx_new + 1) & lp->tx_ring_mod_mask; 580 581 outs++; 582 /* Kick the lance: transmit now */ 583 WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD); 584 dev_consume_skb_any(skb); 585 586 spin_lock_irqsave(&lp->devlock, flags); 587 if (TX_BUFFS_AVAIL) 588 netif_start_queue(dev); 589 else 590 lp->tx_full = 1; 591 spin_unlock_irqrestore(&lp->devlock, flags); 592 593 return NETDEV_TX_OK; 594 } 595 EXPORT_SYMBOL_GPL(lance_start_xmit); 596 597 /* taken from the depca driver via a2065.c */ 598 static void lance_load_multicast(struct net_device *dev) 599 { 600 struct lance_private *lp = netdev_priv(dev); 601 volatile struct lance_init_block *ib = lp->init_block; 602 volatile u16 *mcast_table = (u16 *)&ib->filter; 603 struct netdev_hw_addr *ha; 604 u32 crc; 605 606 /* set all multicast bits */ 607 if (dev->flags & IFF_ALLMULTI) { 608 ib->filter[0] = 0xffffffff; 609 ib->filter[1] = 0xffffffff; 610 return; 611 } 612 /* clear the multicast filter */ 613 ib->filter[0] = 0; 614 ib->filter[1] = 0; 615 616 /* Add addresses */ 617 netdev_for_each_mc_addr(ha, dev) { 618 crc = ether_crc_le(6, ha->addr); 619 crc = crc >> 26; 620 mcast_table[crc >> 4] |= 1 << (crc & 0xf); 621 } 622 } 623 624 625 void lance_set_multicast(struct net_device *dev) 626 { 627 struct lance_private *lp = netdev_priv(dev); 628 volatile struct lance_init_block *ib = lp->init_block; 629 int stopped; 630 631 stopped = netif_queue_stopped(dev); 632 if (!stopped) 633 netif_stop_queue(dev); 634 635 while (lp->tx_old != lp->tx_new) 636 schedule(); 637 638 WRITERAP(lp, LE_CSR0); 639 WRITERDP(lp, LE_C0_STOP); 640 lance_init_ring(dev); 641 642 if (dev->flags & IFF_PROMISC) { 643 ib->mode |= LE_MO_PROM; 644 } else { 645 ib->mode &= ~LE_MO_PROM; 646 lance_load_multicast(dev); 647 } 648 load_csrs(lp); 649 init_restart_lance(lp); 650 651 if (!stopped) 652 netif_start_queue(dev); 653 } 654 EXPORT_SYMBOL_GPL(lance_set_multicast); 655 656 #ifdef CONFIG_NET_POLL_CONTROLLER 657 void lance_poll(struct net_device *dev) 658 { 659 struct lance_private *lp = netdev_priv(dev); 660 661 spin_lock(&lp->devlock); 662 WRITERAP(lp, LE_CSR0); 663 WRITERDP(lp, LE_C0_STRT); 664 spin_unlock(&lp->devlock); 665 lance_interrupt(dev->irq, dev); 666 } 667 EXPORT_SYMBOL_GPL(lance_poll); 668 #endif 669 670 MODULE_LICENSE("GPL"); 671