1 /* 2 * Amiga Linux/68k A2065 Ethernet Driver 3 * 4 * (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org> 5 * 6 * Fixes and tips by: 7 * - Janos Farkas (CHEXUM@sparta.banki.hu) 8 * - Jes Degn Soerensen (jds@kom.auc.dk) 9 * - Matt Domsch (Matt_Domsch@dell.com) 10 * 11 * ---------------------------------------------------------------------------- 12 * 13 * This program is based on 14 * 15 * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver 16 * (C) Copyright 1995 by Geert Uytterhoeven, 17 * Peter De Schrijver 18 * 19 * lance.c: An AMD LANCE ethernet driver for linux. 20 * Written 1993-94 by Donald Becker. 21 * 22 * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller 23 * Advanced Micro Devices 24 * Publication #16907, Rev. B, Amendment/0, May 1994 25 * 26 * ---------------------------------------------------------------------------- 27 * 28 * This file is subject to the terms and conditions of the GNU General Public 29 * License. See the file COPYING in the main directory of the Linux 30 * distribution for more details. 31 * 32 * ---------------------------------------------------------------------------- 33 * 34 * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: 35 * 36 * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with 37 * both 10BASE-2 (thin coax) and AUI (DB-15) connectors 38 */ 39 40 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 41 42 /*#define DEBUG*/ 43 /*#define TEST_HITS*/ 44 45 #include <linux/errno.h> 46 #include <linux/netdevice.h> 47 #include <linux/etherdevice.h> 48 #include <linux/module.h> 49 #include <linux/stddef.h> 50 #include <linux/kernel.h> 51 #include <linux/interrupt.h> 52 #include <linux/ioport.h> 53 #include <linux/skbuff.h> 54 #include <linux/string.h> 55 #include <linux/init.h> 56 #include <linux/crc32.h> 57 #include <linux/zorro.h> 58 #include <linux/bitops.h> 59 60 #include <asm/byteorder.h> 61 #include <asm/irq.h> 62 #include <asm/amigaints.h> 63 #include <asm/amigahw.h> 64 65 #include "a2065.h" 66 67 /* Transmit/Receive Ring Definitions */ 68 69 #define LANCE_LOG_TX_BUFFERS (2) 70 #define LANCE_LOG_RX_BUFFERS (4) 71 72 #define TX_RING_SIZE (1 << LANCE_LOG_TX_BUFFERS) 73 #define RX_RING_SIZE (1 << LANCE_LOG_RX_BUFFERS) 74 75 #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) 76 #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) 77 78 #define PKT_BUF_SIZE (1544) 79 #define RX_BUFF_SIZE PKT_BUF_SIZE 80 #define TX_BUFF_SIZE PKT_BUF_SIZE 81 82 /* Layout of the Lance's RAM Buffer */ 83 84 struct lance_init_block { 85 unsigned short mode; /* Pre-set mode (reg. 15) */ 86 unsigned char phys_addr[6]; /* Physical ethernet address */ 87 unsigned filter[2]; /* Multicast filter. */ 88 89 /* Receive and transmit ring base, along with extra bits. */ 90 unsigned short rx_ptr; /* receive descriptor addr */ 91 unsigned short rx_len; /* receive len and high addr */ 92 unsigned short tx_ptr; /* transmit descriptor addr */ 93 unsigned short tx_len; /* transmit len and high addr */ 94 95 /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ 96 struct lance_rx_desc brx_ring[RX_RING_SIZE]; 97 struct lance_tx_desc btx_ring[TX_RING_SIZE]; 98 99 char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE]; 100 char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE]; 101 }; 102 103 /* Private Device Data */ 104 105 struct lance_private { 106 char *name; 107 volatile struct lance_regs *ll; 108 volatile struct lance_init_block *init_block; /* Hosts view */ 109 volatile struct lance_init_block *lance_init_block; /* Lance view */ 110 111 int rx_new, tx_new; 112 int rx_old, tx_old; 113 114 int lance_log_rx_bufs, lance_log_tx_bufs; 115 int rx_ring_mod_mask, tx_ring_mod_mask; 116 117 int tpe; /* cable-selection is TPE */ 118 int auto_select; /* cable-selection by carrier */ 119 unsigned short busmaster_regval; 120 121 struct timer_list multicast_timer; 122 struct net_device *dev; 123 }; 124 125 #define LANCE_ADDR(x) ((int)(x) & ~0xff000000) 126 127 /* Load the CSR registers */ 128 static void load_csrs(struct lance_private *lp) 129 { 130 volatile struct lance_regs *ll = lp->ll; 131 volatile struct lance_init_block *aib = lp->lance_init_block; 132 int leptr = LANCE_ADDR(aib); 133 134 ll->rap = LE_CSR1; 135 ll->rdp = (leptr & 0xFFFF); 136 ll->rap = LE_CSR2; 137 ll->rdp = leptr >> 16; 138 ll->rap = LE_CSR3; 139 ll->rdp = lp->busmaster_regval; 140 141 /* Point back to csr0 */ 142 ll->rap = LE_CSR0; 143 } 144 145 /* Setup the Lance Rx and Tx rings */ 146 static void lance_init_ring(struct net_device *dev) 147 { 148 struct lance_private *lp = netdev_priv(dev); 149 volatile struct lance_init_block *ib = lp->init_block; 150 volatile struct lance_init_block *aib = lp->lance_init_block; 151 /* for LANCE_ADDR computations */ 152 int leptr; 153 int i; 154 155 /* Lock out other processes while setting up hardware */ 156 netif_stop_queue(dev); 157 lp->rx_new = lp->tx_new = 0; 158 lp->rx_old = lp->tx_old = 0; 159 160 ib->mode = 0; 161 162 /* Copy the ethernet address to the lance init block 163 * Note that on the sparc you need to swap the ethernet address. 164 */ 165 ib->phys_addr[0] = dev->dev_addr[1]; 166 ib->phys_addr[1] = dev->dev_addr[0]; 167 ib->phys_addr[2] = dev->dev_addr[3]; 168 ib->phys_addr[3] = dev->dev_addr[2]; 169 ib->phys_addr[4] = dev->dev_addr[5]; 170 ib->phys_addr[5] = dev->dev_addr[4]; 171 172 /* Setup the Tx ring entries */ 173 netdev_dbg(dev, "TX rings:\n"); 174 for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) { 175 leptr = LANCE_ADDR(&aib->tx_buf[i][0]); 176 ib->btx_ring[i].tmd0 = leptr; 177 ib->btx_ring[i].tmd1_hadr = leptr >> 16; 178 ib->btx_ring[i].tmd1_bits = 0; 179 ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */ 180 ib->btx_ring[i].misc = 0; 181 if (i < 3) 182 netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); 183 } 184 185 /* Setup the Rx ring entries */ 186 netdev_dbg(dev, "RX rings:\n"); 187 for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) { 188 leptr = LANCE_ADDR(&aib->rx_buf[i][0]); 189 190 ib->brx_ring[i].rmd0 = leptr; 191 ib->brx_ring[i].rmd1_hadr = leptr >> 16; 192 ib->brx_ring[i].rmd1_bits = LE_R1_OWN; 193 ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000; 194 ib->brx_ring[i].mblength = 0; 195 if (i < 3) 196 netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); 197 } 198 199 /* Setup the initialization block */ 200 201 /* Setup rx descriptor pointer */ 202 leptr = LANCE_ADDR(&aib->brx_ring); 203 ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); 204 ib->rx_ptr = leptr; 205 netdev_dbg(dev, "RX ptr: %08x\n", leptr); 206 207 /* Setup tx descriptor pointer */ 208 leptr = LANCE_ADDR(&aib->btx_ring); 209 ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); 210 ib->tx_ptr = leptr; 211 netdev_dbg(dev, "TX ptr: %08x\n", leptr); 212 213 /* Clear the multicast filter */ 214 ib->filter[0] = 0; 215 ib->filter[1] = 0; 216 } 217 218 static int init_restart_lance(struct lance_private *lp) 219 { 220 volatile struct lance_regs *ll = lp->ll; 221 int i; 222 223 ll->rap = LE_CSR0; 224 ll->rdp = LE_C0_INIT; 225 226 /* Wait for the lance to complete initialization */ 227 for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++) 228 barrier(); 229 if ((i == 100) || (ll->rdp & LE_C0_ERR)) { 230 pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp); 231 return -EIO; 232 } 233 234 /* Clear IDON by writing a "1", enable interrupts and start lance */ 235 ll->rdp = LE_C0_IDON; 236 ll->rdp = LE_C0_INEA | LE_C0_STRT; 237 238 return 0; 239 } 240 241 static int lance_rx(struct net_device *dev) 242 { 243 struct lance_private *lp = netdev_priv(dev); 244 volatile struct lance_init_block *ib = lp->init_block; 245 volatile struct lance_regs *ll = lp->ll; 246 volatile struct lance_rx_desc *rd; 247 unsigned char bits; 248 249 #ifdef TEST_HITS 250 int i; 251 char buf[RX_RING_SIZE + 1]; 252 253 for (i = 0; i < RX_RING_SIZE; i++) { 254 char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN; 255 if (i == lp->rx_new) 256 buf[i] = r1_own ? '_' : 'X'; 257 else 258 buf[i] = r1_own ? '.' : '1'; 259 } 260 buf[RX_RING_SIZE] = 0; 261 262 pr_debug("RxRing TestHits: [%s]\n", buf); 263 #endif 264 265 ll->rdp = LE_C0_RINT | LE_C0_INEA; 266 for (rd = &ib->brx_ring[lp->rx_new]; 267 !((bits = rd->rmd1_bits) & LE_R1_OWN); 268 rd = &ib->brx_ring[lp->rx_new]) { 269 270 /* We got an incomplete frame? */ 271 if ((bits & LE_R1_POK) != LE_R1_POK) { 272 dev->stats.rx_over_errors++; 273 dev->stats.rx_errors++; 274 continue; 275 } else if (bits & LE_R1_ERR) { 276 /* Count only the end frame as a rx error, 277 * not the beginning 278 */ 279 if (bits & LE_R1_BUF) 280 dev->stats.rx_fifo_errors++; 281 if (bits & LE_R1_CRC) 282 dev->stats.rx_crc_errors++; 283 if (bits & LE_R1_OFL) 284 dev->stats.rx_over_errors++; 285 if (bits & LE_R1_FRA) 286 dev->stats.rx_frame_errors++; 287 if (bits & LE_R1_EOP) 288 dev->stats.rx_errors++; 289 } else { 290 int len = (rd->mblength & 0xfff) - 4; 291 struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); 292 293 if (!skb) { 294 dev->stats.rx_dropped++; 295 rd->mblength = 0; 296 rd->rmd1_bits = LE_R1_OWN; 297 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 298 return 0; 299 } 300 301 skb_reserve(skb, 2); /* 16 byte align */ 302 skb_put(skb, len); /* make room */ 303 skb_copy_to_linear_data(skb, 304 (unsigned char *)&ib->rx_buf[lp->rx_new][0], 305 len); 306 skb->protocol = eth_type_trans(skb, dev); 307 netif_rx(skb); 308 dev->stats.rx_packets++; 309 dev->stats.rx_bytes += len; 310 } 311 312 /* Return the packet to the pool */ 313 rd->mblength = 0; 314 rd->rmd1_bits = LE_R1_OWN; 315 lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; 316 } 317 return 0; 318 } 319 320 static int lance_tx(struct net_device *dev) 321 { 322 struct lance_private *lp = netdev_priv(dev); 323 volatile struct lance_init_block *ib = lp->init_block; 324 volatile struct lance_regs *ll = lp->ll; 325 volatile struct lance_tx_desc *td; 326 int i, j; 327 int status; 328 329 /* csr0 is 2f3 */ 330 ll->rdp = LE_C0_TINT | LE_C0_INEA; 331 /* csr0 is 73 */ 332 333 j = lp->tx_old; 334 for (i = j; i != lp->tx_new; i = j) { 335 td = &ib->btx_ring[i]; 336 337 /* If we hit a packet not owned by us, stop */ 338 if (td->tmd1_bits & LE_T1_OWN) 339 break; 340 341 if (td->tmd1_bits & LE_T1_ERR) { 342 status = td->misc; 343 344 dev->stats.tx_errors++; 345 if (status & LE_T3_RTY) 346 dev->stats.tx_aborted_errors++; 347 if (status & LE_T3_LCOL) 348 dev->stats.tx_window_errors++; 349 350 if (status & LE_T3_CLOS) { 351 dev->stats.tx_carrier_errors++; 352 if (lp->auto_select) { 353 lp->tpe = 1 - lp->tpe; 354 netdev_err(dev, "Carrier Lost, trying %s\n", 355 lp->tpe ? "TPE" : "AUI"); 356 /* Stop the lance */ 357 ll->rap = LE_CSR0; 358 ll->rdp = LE_C0_STOP; 359 lance_init_ring(dev); 360 load_csrs(lp); 361 init_restart_lance(lp); 362 return 0; 363 } 364 } 365 366 /* buffer errors and underflows turn off 367 * the transmitter, so restart the adapter 368 */ 369 if (status & (LE_T3_BUF | LE_T3_UFL)) { 370 dev->stats.tx_fifo_errors++; 371 372 netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n"); 373 /* Stop the lance */ 374 ll->rap = LE_CSR0; 375 ll->rdp = LE_C0_STOP; 376 lance_init_ring(dev); 377 load_csrs(lp); 378 init_restart_lance(lp); 379 return 0; 380 } 381 } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { 382 /* So we don't count the packet more than once. */ 383 td->tmd1_bits &= ~(LE_T1_POK); 384 385 /* One collision before packet was sent. */ 386 if (td->tmd1_bits & LE_T1_EONE) 387 dev->stats.collisions++; 388 389 /* More than one collision, be optimistic. */ 390 if (td->tmd1_bits & LE_T1_EMORE) 391 dev->stats.collisions += 2; 392 393 dev->stats.tx_packets++; 394 } 395 396 j = (j + 1) & lp->tx_ring_mod_mask; 397 } 398 lp->tx_old = j; 399 ll->rdp = LE_C0_TINT | LE_C0_INEA; 400 return 0; 401 } 402 403 static int lance_tx_buffs_avail(struct lance_private *lp) 404 { 405 if (lp->tx_old <= lp->tx_new) 406 return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new; 407 return lp->tx_old - lp->tx_new - 1; 408 } 409 410 static irqreturn_t lance_interrupt(int irq, void *dev_id) 411 { 412 struct net_device *dev = dev_id; 413 struct lance_private *lp = netdev_priv(dev); 414 volatile struct lance_regs *ll = lp->ll; 415 int csr0; 416 417 ll->rap = LE_CSR0; /* LANCE Controller Status */ 418 csr0 = ll->rdp; 419 420 if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */ 421 return IRQ_NONE; /* been generated by the Lance. */ 422 423 /* Acknowledge all the interrupt sources ASAP */ 424 ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT | 425 LE_C0_INIT); 426 427 if (csr0 & LE_C0_ERR) { 428 /* Clear the error condition */ 429 ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA; 430 } 431 432 if (csr0 & LE_C0_RINT) 433 lance_rx(dev); 434 435 if (csr0 & LE_C0_TINT) 436 lance_tx(dev); 437 438 /* Log misc errors. */ 439 if (csr0 & LE_C0_BABL) 440 dev->stats.tx_errors++; /* Tx babble. */ 441 if (csr0 & LE_C0_MISS) 442 dev->stats.rx_errors++; /* Missed a Rx frame. */ 443 if (csr0 & LE_C0_MERR) { 444 netdev_err(dev, "Bus master arbitration failure, status %04x\n", 445 csr0); 446 /* Restart the chip. */ 447 ll->rdp = LE_C0_STRT; 448 } 449 450 if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0) 451 netif_wake_queue(dev); 452 453 ll->rap = LE_CSR0; 454 ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR | 455 LE_C0_IDON | LE_C0_INEA); 456 return IRQ_HANDLED; 457 } 458 459 static int lance_open(struct net_device *dev) 460 { 461 struct lance_private *lp = netdev_priv(dev); 462 volatile struct lance_regs *ll = lp->ll; 463 int ret; 464 465 /* Stop the Lance */ 466 ll->rap = LE_CSR0; 467 ll->rdp = LE_C0_STOP; 468 469 /* Install the Interrupt handler */ 470 ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED, 471 dev->name, dev); 472 if (ret) 473 return ret; 474 475 load_csrs(lp); 476 lance_init_ring(dev); 477 478 netif_start_queue(dev); 479 480 return init_restart_lance(lp); 481 } 482 483 static int lance_close(struct net_device *dev) 484 { 485 struct lance_private *lp = netdev_priv(dev); 486 volatile struct lance_regs *ll = lp->ll; 487 488 netif_stop_queue(dev); 489 del_timer_sync(&lp->multicast_timer); 490 491 /* Stop the card */ 492 ll->rap = LE_CSR0; 493 ll->rdp = LE_C0_STOP; 494 495 free_irq(IRQ_AMIGA_PORTS, dev); 496 return 0; 497 } 498 499 static inline int lance_reset(struct net_device *dev) 500 { 501 struct lance_private *lp = netdev_priv(dev); 502 volatile struct lance_regs *ll = lp->ll; 503 int status; 504 505 /* Stop the lance */ 506 ll->rap = LE_CSR0; 507 ll->rdp = LE_C0_STOP; 508 509 load_csrs(lp); 510 511 lance_init_ring(dev); 512 netif_trans_update(dev); /* prevent tx timeout */ 513 netif_start_queue(dev); 514 515 status = init_restart_lance(lp); 516 netdev_dbg(dev, "Lance restart=%d\n", status); 517 518 return status; 519 } 520 521 static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) 522 { 523 struct lance_private *lp = netdev_priv(dev); 524 volatile struct lance_regs *ll = lp->ll; 525 526 netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp); 527 lance_reset(dev); 528 netif_wake_queue(dev); 529 } 530 531 static netdev_tx_t lance_start_xmit(struct sk_buff *skb, 532 struct net_device *dev) 533 { 534 struct lance_private *lp = netdev_priv(dev); 535 volatile struct lance_regs *ll = lp->ll; 536 volatile struct lance_init_block *ib = lp->init_block; 537 int entry, skblen; 538 int status = NETDEV_TX_OK; 539 unsigned long flags; 540 541 if (skb_padto(skb, ETH_ZLEN)) 542 return NETDEV_TX_OK; 543 skblen = max_t(unsigned, skb->len, ETH_ZLEN); 544 545 local_irq_save(flags); 546 547 if (!lance_tx_buffs_avail(lp)) 548 goto out_free; 549 550 /* dump the packet */ 551 print_hex_dump_debug("skb->data: ", DUMP_PREFIX_NONE, 16, 1, skb->data, 552 64, true); 553 554 entry = lp->tx_new & lp->tx_ring_mod_mask; 555 ib->btx_ring[entry].length = (-skblen) | 0xf000; 556 ib->btx_ring[entry].misc = 0; 557 558 skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); 559 560 /* Now, give the packet to the lance */ 561 ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); 562 lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; 563 dev->stats.tx_bytes += skblen; 564 565 if (lance_tx_buffs_avail(lp) <= 0) 566 netif_stop_queue(dev); 567 568 /* Kick the lance: transmit now */ 569 ll->rdp = LE_C0_INEA | LE_C0_TDMD; 570 out_free: 571 dev_kfree_skb(skb); 572 573 local_irq_restore(flags); 574 575 return status; 576 } 577 578 /* taken from the depca driver */ 579 static void lance_load_multicast(struct net_device *dev) 580 { 581 struct lance_private *lp = netdev_priv(dev); 582 volatile struct lance_init_block *ib = lp->init_block; 583 volatile u16 *mcast_table = (u16 *)&ib->filter; 584 struct netdev_hw_addr *ha; 585 u32 crc; 586 587 /* set all multicast bits */ 588 if (dev->flags & IFF_ALLMULTI) { 589 ib->filter[0] = 0xffffffff; 590 ib->filter[1] = 0xffffffff; 591 return; 592 } 593 /* clear the multicast filter */ 594 ib->filter[0] = 0; 595 ib->filter[1] = 0; 596 597 /* Add addresses */ 598 netdev_for_each_mc_addr(ha, dev) { 599 crc = ether_crc_le(6, ha->addr); 600 crc = crc >> 26; 601 mcast_table[crc >> 4] |= 1 << (crc & 0xf); 602 } 603 } 604 605 static void lance_set_multicast(struct net_device *dev) 606 { 607 struct lance_private *lp = netdev_priv(dev); 608 volatile struct lance_init_block *ib = lp->init_block; 609 volatile struct lance_regs *ll = lp->ll; 610 611 if (!netif_running(dev)) 612 return; 613 614 if (lp->tx_old != lp->tx_new) { 615 mod_timer(&lp->multicast_timer, jiffies + 4); 616 netif_wake_queue(dev); 617 return; 618 } 619 620 netif_stop_queue(dev); 621 622 ll->rap = LE_CSR0; 623 ll->rdp = LE_C0_STOP; 624 lance_init_ring(dev); 625 626 if (dev->flags & IFF_PROMISC) { 627 ib->mode |= LE_MO_PROM; 628 } else { 629 ib->mode &= ~LE_MO_PROM; 630 lance_load_multicast(dev); 631 } 632 load_csrs(lp); 633 init_restart_lance(lp); 634 netif_wake_queue(dev); 635 } 636 637 static void lance_set_multicast_retry(struct timer_list *t) 638 { 639 struct lance_private *lp = from_timer(lp, t, multicast_timer); 640 641 lance_set_multicast(lp->dev); 642 } 643 644 static int a2065_init_one(struct zorro_dev *z, 645 const struct zorro_device_id *ent); 646 static void a2065_remove_one(struct zorro_dev *z); 647 648 649 static const struct zorro_device_id a2065_zorro_tbl[] = { 650 { ZORRO_PROD_CBM_A2065_1 }, 651 { ZORRO_PROD_CBM_A2065_2 }, 652 { ZORRO_PROD_AMERISTAR_A2065 }, 653 { 0 } 654 }; 655 MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl); 656 657 static struct zorro_driver a2065_driver = { 658 .name = "a2065", 659 .id_table = a2065_zorro_tbl, 660 .probe = a2065_init_one, 661 .remove = a2065_remove_one, 662 }; 663 664 static const struct net_device_ops lance_netdev_ops = { 665 .ndo_open = lance_open, 666 .ndo_stop = lance_close, 667 .ndo_start_xmit = lance_start_xmit, 668 .ndo_tx_timeout = lance_tx_timeout, 669 .ndo_set_rx_mode = lance_set_multicast, 670 .ndo_validate_addr = eth_validate_addr, 671 .ndo_set_mac_address = eth_mac_addr, 672 }; 673 674 static int a2065_init_one(struct zorro_dev *z, 675 const struct zorro_device_id *ent) 676 { 677 struct net_device *dev; 678 struct lance_private *priv; 679 unsigned long board = z->resource.start; 680 unsigned long base_addr = board + A2065_LANCE; 681 unsigned long mem_start = board + A2065_RAM; 682 struct resource *r1, *r2; 683 u32 serial; 684 int err; 685 686 r1 = request_mem_region(base_addr, sizeof(struct lance_regs), 687 "Am7990"); 688 if (!r1) 689 return -EBUSY; 690 r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM"); 691 if (!r2) { 692 release_mem_region(base_addr, sizeof(struct lance_regs)); 693 return -EBUSY; 694 } 695 696 dev = alloc_etherdev(sizeof(struct lance_private)); 697 if (dev == NULL) { 698 release_mem_region(base_addr, sizeof(struct lance_regs)); 699 release_mem_region(mem_start, A2065_RAM_SIZE); 700 return -ENOMEM; 701 } 702 703 priv = netdev_priv(dev); 704 705 r1->name = dev->name; 706 r2->name = dev->name; 707 708 serial = be32_to_cpu(z->rom.er_SerialNumber); 709 dev->dev_addr[0] = 0x00; 710 if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */ 711 dev->dev_addr[1] = 0x80; 712 dev->dev_addr[2] = 0x10; 713 } else { /* Ameristar */ 714 dev->dev_addr[1] = 0x00; 715 dev->dev_addr[2] = 0x9f; 716 } 717 dev->dev_addr[3] = (serial >> 16) & 0xff; 718 dev->dev_addr[4] = (serial >> 8) & 0xff; 719 dev->dev_addr[5] = serial & 0xff; 720 dev->base_addr = (unsigned long)ZTWO_VADDR(base_addr); 721 dev->mem_start = (unsigned long)ZTWO_VADDR(mem_start); 722 dev->mem_end = dev->mem_start + A2065_RAM_SIZE; 723 724 priv->ll = (volatile struct lance_regs *)dev->base_addr; 725 priv->init_block = (struct lance_init_block *)dev->mem_start; 726 priv->lance_init_block = (struct lance_init_block *)A2065_RAM; 727 priv->auto_select = 0; 728 priv->busmaster_regval = LE_C3_BSWP; 729 730 priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; 731 priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; 732 priv->rx_ring_mod_mask = RX_RING_MOD_MASK; 733 priv->tx_ring_mod_mask = TX_RING_MOD_MASK; 734 priv->dev = dev; 735 736 dev->netdev_ops = &lance_netdev_ops; 737 dev->watchdog_timeo = 5*HZ; 738 dev->dma = 0; 739 740 timer_setup(&priv->multicast_timer, lance_set_multicast_retry, 0); 741 742 err = register_netdev(dev); 743 if (err) { 744 release_mem_region(base_addr, sizeof(struct lance_regs)); 745 release_mem_region(mem_start, A2065_RAM_SIZE); 746 free_netdev(dev); 747 return err; 748 } 749 zorro_set_drvdata(z, dev); 750 751 netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n", 752 board, dev->dev_addr); 753 754 return 0; 755 } 756 757 758 static void a2065_remove_one(struct zorro_dev *z) 759 { 760 struct net_device *dev = zorro_get_drvdata(z); 761 762 unregister_netdev(dev); 763 release_mem_region(ZTWO_PADDR(dev->base_addr), 764 sizeof(struct lance_regs)); 765 release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE); 766 free_netdev(dev); 767 } 768 769 static int __init a2065_init_module(void) 770 { 771 return zorro_register_driver(&a2065_driver); 772 } 773 774 static void __exit a2065_cleanup_module(void) 775 { 776 zorro_unregister_driver(&a2065_driver); 777 } 778 779 module_init(a2065_init_module); 780 module_exit(a2065_cleanup_module); 781 782 MODULE_LICENSE("GPL"); 783