1/* 2 * ni6510 (am7990 'lance' chip) driver for Linux-net-3 3 * BETAcode v0.71 (96/09/29) for 2.0.0 (or later) 4 * copyrights (c) 1994,1995,1996 by M.Hipp 5 * 6 * This driver can handle the old ni6510 board and the newer ni6510 7 * EtherBlaster. (probably it also works with every full NE2100 8 * compatible card) 9 * 10 * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7 11 * 12 * This is an extension to the Linux operating system, and is covered by the 13 * same GNU General Public License that covers the Linux-kernel. 14 * 15 * comments/bugs/suggestions can be sent to: 16 * Michael Hipp 17 * email: hippm@informatik.uni-tuebingen.de 18 * 19 * sources: 20 * some things are from the 'ni6510-packet-driver for dos by Russ Nelson' 21 * and from the original drivers by D.Becker 22 * 23 * known problems: 24 * - on some PCI boards (including my own) the card/board/ISA-bridge has 25 * problems with bus master DMA. This results in lotsa overruns. 26 * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef 27 * the XMT and RCV_VIA_SKB option .. this reduces driver performance. 28 * Or just play with your BIOS options to optimize ISA-DMA access. 29 * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE 30 * defines -> please report me your experience then 31 * - Harald reported for ASUS SP3G mainboards, that you should use 32 * the 'optimal settings' from the user's manual on page 3-12! 33 * 34 * credits: 35 * thanx to Jason Sullivan for sending me a ni6510 card! 36 * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig 37 * 38 * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB) 39 * average: FTP -> 8384421 bytes received in 8.5 seconds 40 * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS) 41 * peak: FTP -> 8384421 bytes received in 7.5 seconds 42 * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS) 43 */ 44 45/* 46 * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK) 47 * 96.Sept.29: virt_to_bus stuff added for new memory modell 48 * 96.April.29: Added Harald Koenig's Patches (MH) 49 * 96.April.13: enhanced error handling .. more tests (MH) 50 * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH) 51 * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH) 52 * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH) 53 * hopefully no more 16MB limit 54 * 55 * 95.Nov.18: multicast tweaked (AC). 56 * 57 * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) 58 * 59 * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) 60 */ 61 62#include <linux/kernel.h> 63#include <linux/string.h> 64#include <linux/errno.h> 65#include <linux/ioport.h> 66#include <linux/slab.h> 67#include <linux/interrupt.h> 68#include <linux/delay.h> 69#include <linux/init.h> 70#include <linux/netdevice.h> 71#include <linux/etherdevice.h> 72#include <linux/skbuff.h> 73#include <linux/module.h> 74#include <linux/bitops.h> 75 76#include <asm/io.h> 77#include <asm/dma.h> 78 79#include "ni65.h" 80 81/* 82 * the current setting allows an acceptable performance 83 * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in 84 * the header of this file 85 * 'invert' the defines for max. performance. This may cause DMA problems 86 * on some boards (e.g on my ASUS SP3G) 87 */ 88#undef XMT_VIA_SKB 89#undef RCV_VIA_SKB 90#define RCV_PARANOIA_CHECK 91 92#define MID_PERFORMANCE 93 94#if defined( LOW_PERFORMANCE ) 95 static int isa0=7,isa1=7,csr80=0x0c10; 96#elif defined( MID_PERFORMANCE ) 97 static int isa0=5,isa1=5,csr80=0x2810; 98#else /* high performance */ 99 static int isa0=4,isa1=4,csr80=0x0017; 100#endif 101 102/* 103 * a few card/vendor specific defines 104 */ 105#define NI65_ID0 0x00 106#define NI65_ID1 0x55 107#define NI65_EB_ID0 0x52 108#define NI65_EB_ID1 0x44 109#define NE2100_ID0 0x57 110#define NE2100_ID1 0x57 111 112#define PORT p->cmdr_addr 113 114/* 115 * buffer configuration 116 */ 117#if 1 118#define RMDNUM 16 119#define RMDNUMMASK 0x80000000 120#else 121#define RMDNUM 8 122#define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */ 123#endif 124 125#if 0 126#define TMDNUM 1 127#define TMDNUMMASK 0x00000000 128#else 129#define TMDNUM 4 130#define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */ 131#endif 132 133/* slightly oversized */ 134#define R_BUF_SIZE 1544 135#define T_BUF_SIZE 1544 136 137/* 138 * lance register defines 139 */ 140#define L_DATAREG 0x00 141#define L_ADDRREG 0x02 142#define L_RESET 0x04 143#define L_CONFIG 0x05 144#define L_BUSIF 0x06 145 146/* 147 * to access the lance/am7990-regs, you have to write 148 * reg-number into L_ADDRREG, then you can access it using L_DATAREG 149 */ 150#define CSR0 0x00 151#define CSR1 0x01 152#define CSR2 0x02 153#define CSR3 0x03 154 155#define INIT_RING_BEFORE_START 0x1 156#define FULL_RESET_ON_ERROR 0x2 157 158#if 0 159#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ 160 outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} 161#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ 162 inw(PORT+L_DATAREG)) 163#if 0 164#define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} 165#else 166#define writedatareg(val) { writereg(val,CSR0); } 167#endif 168#else 169#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);} 170#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG)) 171#define writedatareg(val) { writereg(val,CSR0); } 172#endif 173 174static unsigned char ni_vendor[] = { 0x02,0x07,0x01 }; 175 176static struct card { 177 unsigned char id0,id1; 178 short id_offset; 179 short total_size; 180 short cmd_offset; 181 short addr_offset; 182 unsigned char *vendor_id; 183 char *cardname; 184 unsigned long config; 185} cards[] = { 186 { 187 .id0 = NI65_ID0, 188 .id1 = NI65_ID1, 189 .id_offset = 0x0e, 190 .total_size = 0x10, 191 .cmd_offset = 0x0, 192 .addr_offset = 0x8, 193 .vendor_id = ni_vendor, 194 .cardname = "ni6510", 195 .config = 0x1, 196 }, 197 { 198 .id0 = NI65_EB_ID0, 199 .id1 = NI65_EB_ID1, 200 .id_offset = 0x0e, 201 .total_size = 0x18, 202 .cmd_offset = 0x10, 203 .addr_offset = 0x0, 204 .vendor_id = ni_vendor, 205 .cardname = "ni6510 EtherBlaster", 206 .config = 0x2, 207 }, 208 { 209 .id0 = NE2100_ID0, 210 .id1 = NE2100_ID1, 211 .id_offset = 0x0e, 212 .total_size = 0x18, 213 .cmd_offset = 0x10, 214 .addr_offset = 0x0, 215 .vendor_id = NULL, 216 .cardname = "generic NE2100", 217 .config = 0x0, 218 }, 219}; 220#define NUM_CARDS 3 221 222struct priv 223{ 224 struct rmd rmdhead[RMDNUM]; 225 struct tmd tmdhead[TMDNUM]; 226 struct init_block ib; 227 int rmdnum; 228 int tmdnum,tmdlast; 229#ifdef RCV_VIA_SKB 230 struct sk_buff *recv_skb[RMDNUM]; 231#else 232 void *recvbounce[RMDNUM]; 233#endif 234#ifdef XMT_VIA_SKB 235 struct sk_buff *tmd_skb[TMDNUM]; 236#endif 237 void *tmdbounce[TMDNUM]; 238 int tmdbouncenum; 239 int lock,xmit_queued; 240 241 void *self; 242 int cmdr_addr; 243 int cardno; 244 int features; 245 spinlock_t ring_lock; 246}; 247 248static int ni65_probe1(struct net_device *dev,int); 249static irqreturn_t ni65_interrupt(int irq, void * dev_id); 250static void ni65_recv_intr(struct net_device *dev,int); 251static void ni65_xmit_intr(struct net_device *dev,int); 252static int ni65_open(struct net_device *dev); 253static int ni65_lance_reinit(struct net_device *dev); 254static void ni65_init_lance(struct priv *p,unsigned char*,int,int); 255static netdev_tx_t ni65_send_packet(struct sk_buff *skb, 256 struct net_device *dev); 257static void ni65_timeout(struct net_device *dev); 258static int ni65_close(struct net_device *dev); 259static int ni65_alloc_buffer(struct net_device *dev); 260static void ni65_free_buffer(struct priv *p); 261static void set_multicast_list(struct net_device *dev); 262 263static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */ 264static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */ 265 266static int debuglevel = 1; 267 268/* 269 * set 'performance' registers .. we must STOP lance for that 270 */ 271static void ni65_set_performance(struct priv *p) 272{ 273 writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */ 274 275 if( !(cards[p->cardno].config & 0x02) ) 276 return; 277 278 outw(80,PORT+L_ADDRREG); 279 if(inw(PORT+L_ADDRREG) != 80) 280 return; 281 282 writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */ 283 outw(0,PORT+L_ADDRREG); 284 outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */ 285 outw(1,PORT+L_ADDRREG); 286 outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */ 287 288 outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */ 289} 290 291/* 292 * open interface (up) 293 */ 294static int ni65_open(struct net_device *dev) 295{ 296 struct priv *p = dev->ml_priv; 297 int irqval = request_irq(dev->irq, ni65_interrupt,0, 298 cards[p->cardno].cardname,dev); 299 if (irqval) { 300 printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n", 301 dev->name,dev->irq, irqval); 302 return -EAGAIN; 303 } 304 305 if(ni65_lance_reinit(dev)) 306 { 307 netif_start_queue(dev); 308 return 0; 309 } 310 else 311 { 312 free_irq(dev->irq,dev); 313 return -EAGAIN; 314 } 315} 316 317/* 318 * close interface (down) 319 */ 320static int ni65_close(struct net_device *dev) 321{ 322 struct priv *p = dev->ml_priv; 323 324 netif_stop_queue(dev); 325 326 outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */ 327 328#ifdef XMT_VIA_SKB 329 { 330 int i; 331 for(i=0;i<TMDNUM;i++) 332 { 333 if(p->tmd_skb[i]) { 334 dev_kfree_skb(p->tmd_skb[i]); 335 p->tmd_skb[i] = NULL; 336 } 337 } 338 } 339#endif 340 free_irq(dev->irq,dev); 341 return 0; 342} 343 344static void cleanup_card(struct net_device *dev) 345{ 346 struct priv *p = dev->ml_priv; 347 disable_dma(dev->dma); 348 free_dma(dev->dma); 349 release_region(dev->base_addr, cards[p->cardno].total_size); 350 ni65_free_buffer(p); 351} 352 353/* set: io,irq,dma or set it when calling insmod */ 354static int irq; 355static int io; 356static int dma; 357 358/* 359 * Probe The Card (not the lance-chip) 360 */ 361struct net_device * __init ni65_probe(int unit) 362{ 363 struct net_device *dev = alloc_etherdev(0); 364 static const int ports[] = { 0x360, 0x300, 0x320, 0x340, 0 }; 365 const int *port; 366 int err = 0; 367 368 if (!dev) 369 return ERR_PTR(-ENOMEM); 370 371 if (unit >= 0) { 372 sprintf(dev->name, "eth%d", unit); 373 netdev_boot_setup_check(dev); 374 irq = dev->irq; 375 dma = dev->dma; 376 } else { 377 dev->base_addr = io; 378 } 379 380 if (dev->base_addr > 0x1ff) { /* Check a single specified location. */ 381 err = ni65_probe1(dev, dev->base_addr); 382 } else if (dev->base_addr > 0) { /* Don't probe at all. */ 383 err = -ENXIO; 384 } else { 385 for (port = ports; *port && ni65_probe1(dev, *port); port++) 386 ; 387 if (!*port) 388 err = -ENODEV; 389 } 390 if (err) 391 goto out; 392 393 err = register_netdev(dev); 394 if (err) 395 goto out1; 396 return dev; 397out1: 398 cleanup_card(dev); 399out: 400 free_netdev(dev); 401 return ERR_PTR(err); 402} 403 404static const struct net_device_ops ni65_netdev_ops = { 405 .ndo_open = ni65_open, 406 .ndo_stop = ni65_close, 407 .ndo_start_xmit = ni65_send_packet, 408 .ndo_tx_timeout = ni65_timeout, 409 .ndo_set_rx_mode = set_multicast_list, 410 .ndo_change_mtu = eth_change_mtu, 411 .ndo_set_mac_address = eth_mac_addr, 412 .ndo_validate_addr = eth_validate_addr, 413}; 414 415/* 416 * this is the real card probe .. 417 */ 418static int __init ni65_probe1(struct net_device *dev,int ioaddr) 419{ 420 int i,j; 421 struct priv *p; 422 unsigned long flags; 423 424 dev->irq = irq; 425 dev->dma = dma; 426 427 for(i=0;i<NUM_CARDS;i++) { 428 if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname)) 429 continue; 430 if(cards[i].id_offset >= 0) { 431 if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 || 432 inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) { 433 release_region(ioaddr, cards[i].total_size); 434 continue; 435 } 436 } 437 if(cards[i].vendor_id) { 438 for(j=0;j<3;j++) 439 if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) { 440 release_region(ioaddr, cards[i].total_size); 441 continue; 442 } 443 } 444 break; 445 } 446 if(i == NUM_CARDS) 447 return -ENODEV; 448 449 for(j=0;j<6;j++) 450 dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j); 451 452 if( (j=ni65_alloc_buffer(dev)) < 0) { 453 release_region(ioaddr, cards[i].total_size); 454 return j; 455 } 456 p = dev->ml_priv; 457 p->cmdr_addr = ioaddr + cards[i].cmd_offset; 458 p->cardno = i; 459 spin_lock_init(&p->ring_lock); 460 461 printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr); 462 463 outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ 464 if( (j=readreg(CSR0)) != 0x4) { 465 printk("failed.\n"); 466 printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j); 467 ni65_free_buffer(p); 468 release_region(ioaddr, cards[p->cardno].total_size); 469 return -EAGAIN; 470 } 471 472 outw(88,PORT+L_ADDRREG); 473 if(inw(PORT+L_ADDRREG) == 88) { 474 unsigned long v; 475 v = inw(PORT+L_DATAREG); 476 v <<= 16; 477 outw(89,PORT+L_ADDRREG); 478 v |= inw(PORT+L_DATAREG); 479 printk("Version %#08lx, ",v); 480 p->features = INIT_RING_BEFORE_START; 481 } 482 else { 483 printk("ancient LANCE, "); 484 p->features = 0x0; 485 } 486 487 if(test_bit(0,&cards[i].config)) { 488 dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3]; 489 dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3]; 490 printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma); 491 } 492 else { 493 if(dev->dma == 0) { 494 /* 'stuck test' from lance.c */ 495 unsigned long dma_channels = 496 ((inb(DMA1_STAT_REG) >> 4) & 0x0f) 497 | (inb(DMA2_STAT_REG) & 0xf0); 498 for(i=1;i<5;i++) { 499 int dma = dmatab[i]; 500 if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510")) 501 continue; 502 503 flags=claim_dma_lock(); 504 disable_dma(dma); 505 set_dma_mode(dma,DMA_MODE_CASCADE); 506 enable_dma(dma); 507 release_dma_lock(flags); 508 509 ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */ 510 511 flags=claim_dma_lock(); 512 disable_dma(dma); 513 free_dma(dma); 514 release_dma_lock(flags); 515 516 if(readreg(CSR0) & CSR0_IDON) 517 break; 518 } 519 if(i == 5) { 520 printk("failed.\n"); 521 printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name); 522 ni65_free_buffer(p); 523 release_region(ioaddr, cards[p->cardno].total_size); 524 return -EAGAIN; 525 } 526 dev->dma = dmatab[i]; 527 printk("DMA %d (autodetected), ",dev->dma); 528 } 529 else 530 printk("DMA %d (assigned), ",dev->dma); 531 532 if(dev->irq < 2) 533 { 534 unsigned long irq_mask; 535 536 ni65_init_lance(p,dev->dev_addr,0,0); 537 irq_mask = probe_irq_on(); 538 writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */ 539 msleep(20); 540 dev->irq = probe_irq_off(irq_mask); 541 if(!dev->irq) 542 { 543 printk("Failed to detect IRQ line!\n"); 544 ni65_free_buffer(p); 545 release_region(ioaddr, cards[p->cardno].total_size); 546 return -EAGAIN; 547 } 548 printk("IRQ %d (autodetected).\n",dev->irq); 549 } 550 else 551 printk("IRQ %d (assigned).\n",dev->irq); 552 } 553 554 if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0) 555 { 556 printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); 557 ni65_free_buffer(p); 558 release_region(ioaddr, cards[p->cardno].total_size); 559 return -EAGAIN; 560 } 561 562 dev->base_addr = ioaddr; 563 dev->netdev_ops = &ni65_netdev_ops; 564 dev->watchdog_timeo = HZ/2; 565 566 return 0; /* everything is OK */ 567} 568 569/* 570 * set lance register and trigger init 571 */ 572static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode) 573{ 574 int i; 575 u32 pib; 576 577 writereg(CSR0_CLRALL|CSR0_STOP,CSR0); 578 579 for(i=0;i<6;i++) 580 p->ib.eaddr[i] = daddr[i]; 581 582 for(i=0;i<8;i++) 583 p->ib.filter[i] = filter; 584 p->ib.mode = mode; 585 586 p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK; 587 p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK; 588 writereg(0,CSR3); /* busmaster/no word-swap */ 589 pib = (u32) isa_virt_to_bus(&p->ib); 590 writereg(pib & 0xffff,CSR1); 591 writereg(pib >> 16,CSR2); 592 593 writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */ 594 595 for(i=0;i<32;i++) 596 { 597 mdelay(4); 598 if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) ) 599 break; /* init ok ? */ 600 } 601} 602 603/* 604 * allocate memory area and check the 16MB border 605 */ 606static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type) 607{ 608 struct sk_buff *skb=NULL; 609 unsigned char *ptr; 610 void *ret; 611 612 if(type) { 613 ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA); 614 if(!skb) { 615 printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); 616 return NULL; 617 } 618 skb_reserve(skb,2+16); 619 skb_put(skb,R_BUF_SIZE); /* grab the whole space .. (not necessary) */ 620 ptr = skb->data; 621 } 622 else { 623 ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA); 624 if(!ret) 625 return NULL; 626 } 627 if( (u32) virt_to_phys(ptr+size) > 0x1000000) { 628 printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what); 629 if(type) 630 kfree_skb(skb); 631 else 632 kfree(ptr); 633 return NULL; 634 } 635 return ret; 636} 637 638/* 639 * allocate all memory structures .. send/recv buffers etc ... 640 */ 641static int ni65_alloc_buffer(struct net_device *dev) 642{ 643 unsigned char *ptr; 644 struct priv *p; 645 int i; 646 647 /* 648 * we need 8-aligned memory .. 649 */ 650 ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0); 651 if(!ptr) 652 return -ENOMEM; 653 654 p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7); 655 memset((char *)p, 0, sizeof(struct priv)); 656 p->self = ptr; 657 658 for(i=0;i<TMDNUM;i++) 659 { 660#ifdef XMT_VIA_SKB 661 p->tmd_skb[i] = NULL; 662#endif 663 p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0); 664 if(!p->tmdbounce[i]) { 665 ni65_free_buffer(p); 666 return -ENOMEM; 667 } 668 } 669 670 for(i=0;i<RMDNUM;i++) 671 { 672#ifdef RCV_VIA_SKB 673 p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1); 674 if(!p->recv_skb[i]) { 675 ni65_free_buffer(p); 676 return -ENOMEM; 677 } 678#else 679 p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0); 680 if(!p->recvbounce[i]) { 681 ni65_free_buffer(p); 682 return -ENOMEM; 683 } 684#endif 685 } 686 687 return 0; /* everything is OK */ 688} 689 690/* 691 * free buffers and private struct 692 */ 693static void ni65_free_buffer(struct priv *p) 694{ 695 int i; 696 697 if(!p) 698 return; 699 700 for(i=0;i<TMDNUM;i++) { 701 kfree(p->tmdbounce[i]); 702#ifdef XMT_VIA_SKB 703 if(p->tmd_skb[i]) 704 dev_kfree_skb(p->tmd_skb[i]); 705#endif 706 } 707 708 for(i=0;i<RMDNUM;i++) 709 { 710#ifdef RCV_VIA_SKB 711 if(p->recv_skb[i]) 712 dev_kfree_skb(p->recv_skb[i]); 713#else 714 kfree(p->recvbounce[i]); 715#endif 716 } 717 kfree(p->self); 718} 719 720 721/* 722 * stop and (re)start lance .. e.g after an error 723 */ 724static void ni65_stop_start(struct net_device *dev,struct priv *p) 725{ 726 int csr0 = CSR0_INEA; 727 728 writedatareg(CSR0_STOP); 729 730 if(debuglevel > 1) 731 printk(KERN_DEBUG "ni65_stop_start\n"); 732 733 if(p->features & INIT_RING_BEFORE_START) { 734 int i; 735#ifdef XMT_VIA_SKB 736 struct sk_buff *skb_save[TMDNUM]; 737#endif 738 unsigned long buffer[TMDNUM]; 739 short blen[TMDNUM]; 740 741 if(p->xmit_queued) { 742 while(1) { 743 if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN)) 744 break; 745 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); 746 if(p->tmdlast == p->tmdnum) 747 break; 748 } 749 } 750 751 for(i=0;i<TMDNUM;i++) { 752 struct tmd *tmdp = p->tmdhead + i; 753#ifdef XMT_VIA_SKB 754 skb_save[i] = p->tmd_skb[i]; 755#endif 756 buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer); 757 blen[i] = tmdp->blen; 758 tmdp->u.s.status = 0x0; 759 } 760 761 for(i=0;i<RMDNUM;i++) { 762 struct rmd *rmdp = p->rmdhead + i; 763 rmdp->u.s.status = RCV_OWN; 764 } 765 p->tmdnum = p->xmit_queued = 0; 766 writedatareg(CSR0_STRT | csr0); 767 768 for(i=0;i<TMDNUM;i++) { 769 int num = (i + p->tmdlast) & (TMDNUM-1); 770 p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */ 771 p->tmdhead[i].blen = blen[num]; 772 if(p->tmdhead[i].u.s.status & XMIT_OWN) { 773 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); 774 p->xmit_queued = 1; 775 writedatareg(CSR0_TDMD | CSR0_INEA | csr0); 776 } 777#ifdef XMT_VIA_SKB 778 p->tmd_skb[i] = skb_save[num]; 779#endif 780 } 781 p->rmdnum = p->tmdlast = 0; 782 if(!p->lock) 783 if (p->tmdnum || !p->xmit_queued) 784 netif_wake_queue(dev); 785 dev->trans_start = jiffies; /* prevent tx timeout */ 786 } 787 else 788 writedatareg(CSR0_STRT | csr0); 789} 790 791/* 792 * init lance (write init-values .. init-buffers) (open-helper) 793 */ 794static int ni65_lance_reinit(struct net_device *dev) 795{ 796 int i; 797 struct priv *p = dev->ml_priv; 798 unsigned long flags; 799 800 p->lock = 0; 801 p->xmit_queued = 0; 802 803 flags=claim_dma_lock(); 804 disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */ 805 set_dma_mode(dev->dma,DMA_MODE_CASCADE); 806 enable_dma(dev->dma); 807 release_dma_lock(flags); 808 809 outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ 810 if( (i=readreg(CSR0) ) != 0x4) 811 { 812 printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name, 813 cards[p->cardno].cardname,(int) i); 814 flags=claim_dma_lock(); 815 disable_dma(dev->dma); 816 release_dma_lock(flags); 817 return 0; 818 } 819 820 p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0; 821 for(i=0;i<TMDNUM;i++) 822 { 823 struct tmd *tmdp = p->tmdhead + i; 824#ifdef XMT_VIA_SKB 825 if(p->tmd_skb[i]) { 826 dev_kfree_skb(p->tmd_skb[i]); 827 p->tmd_skb[i] = NULL; 828 } 829#endif 830 tmdp->u.buffer = 0x0; 831 tmdp->u.s.status = XMIT_START | XMIT_END; 832 tmdp->blen = tmdp->status2 = 0; 833 } 834 835 for(i=0;i<RMDNUM;i++) 836 { 837 struct rmd *rmdp = p->rmdhead + i; 838#ifdef RCV_VIA_SKB 839 rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data); 840#else 841 rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]); 842#endif 843 rmdp->blen = -(R_BUF_SIZE-8); 844 rmdp->mlen = 0; 845 rmdp->u.s.status = RCV_OWN; 846 } 847 848 if(dev->flags & IFF_PROMISC) 849 ni65_init_lance(p,dev->dev_addr,0x00,M_PROM); 850 else if (netdev_mc_count(dev) || dev->flags & IFF_ALLMULTI) 851 ni65_init_lance(p,dev->dev_addr,0xff,0x0); 852 else 853 ni65_init_lance(p,dev->dev_addr,0x00,0x00); 854 855 /* 856 * ni65_set_lance_mem() sets L_ADDRREG to CSR0 857 * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED 858 */ 859 860 if(inw(PORT+L_DATAREG) & CSR0_IDON) { 861 ni65_set_performance(p); 862 /* init OK: start lance , enable interrupts */ 863 writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); 864 return 1; /* ->OK */ 865 } 866 printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); 867 flags=claim_dma_lock(); 868 disable_dma(dev->dma); 869 release_dma_lock(flags); 870 return 0; /* ->Error */ 871} 872 873/* 874 * interrupt handler 875 */ 876static irqreturn_t ni65_interrupt(int irq, void * dev_id) 877{ 878 int csr0 = 0; 879 struct net_device *dev = dev_id; 880 struct priv *p; 881 int bcnt = 32; 882 883 p = dev->ml_priv; 884 885 spin_lock(&p->ring_lock); 886 887 while(--bcnt) { 888 csr0 = inw(PORT+L_DATAREG); 889 890#if 0 891 writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */ 892#else 893 writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */ 894#endif 895 896 if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT))) 897 break; 898 899 if(csr0 & CSR0_RINT) /* RECV-int? */ 900 ni65_recv_intr(dev,csr0); 901 if(csr0 & CSR0_TINT) /* XMIT-int? */ 902 ni65_xmit_intr(dev,csr0); 903 904 if(csr0 & CSR0_ERR) 905 { 906 if(debuglevel > 1) 907 printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0); 908 if(csr0 & CSR0_BABL) 909 dev->stats.tx_errors++; 910 if(csr0 & CSR0_MISS) { 911 int i; 912 for(i=0;i<RMDNUM;i++) 913 printk("%02x ",p->rmdhead[i].u.s.status); 914 printk("\n"); 915 dev->stats.rx_errors++; 916 } 917 if(csr0 & CSR0_MERR) { 918 if(debuglevel > 1) 919 printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0); 920 ni65_stop_start(dev,p); 921 } 922 } 923 } 924 925#ifdef RCV_PARANOIA_CHECK 926{ 927 int j; 928 for(j=0;j<RMDNUM;j++) 929 { 930 int i, num2; 931 for(i=RMDNUM-1;i>0;i--) { 932 num2 = (p->rmdnum + i) & (RMDNUM-1); 933 if(!(p->rmdhead[num2].u.s.status & RCV_OWN)) 934 break; 935 } 936 937 if(i) { 938 int k, num1; 939 for(k=0;k<RMDNUM;k++) { 940 num1 = (p->rmdnum + k) & (RMDNUM-1); 941 if(!(p->rmdhead[num1].u.s.status & RCV_OWN)) 942 break; 943 } 944 if(!k) 945 break; 946 947 if(debuglevel > 0) 948 { 949 char buf[256],*buf1; 950 buf1 = buf; 951 for(k=0;k<RMDNUM;k++) { 952 sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */ 953 buf1 += 3; 954 } 955 *buf1 = 0; 956 printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf); 957 } 958 959 p->rmdnum = num1; 960 ni65_recv_intr(dev,csr0); 961 if((p->rmdhead[num2].u.s.status & RCV_OWN)) 962 break; /* ok, we are 'in sync' again */ 963 } 964 else 965 break; 966 } 967} 968#endif 969 970 if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) { 971 printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name); 972 ni65_stop_start(dev,p); 973 } 974 else 975 writedatareg(CSR0_INEA); 976 977 spin_unlock(&p->ring_lock); 978 return IRQ_HANDLED; 979} 980 981/* 982 * We have received an Xmit-Interrupt .. 983 * send a new packet if necessary 984 */ 985static void ni65_xmit_intr(struct net_device *dev,int csr0) 986{ 987 struct priv *p = dev->ml_priv; 988 989 while(p->xmit_queued) 990 { 991 struct tmd *tmdp = p->tmdhead + p->tmdlast; 992 int tmdstat = tmdp->u.s.status; 993 994 if(tmdstat & XMIT_OWN) 995 break; 996 997 if(tmdstat & XMIT_ERR) 998 { 999#if 0 1000 if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3) 1001 printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name); 1002#endif 1003 /* checking some errors */ 1004 if(tmdp->status2 & XMIT_RTRY) 1005 dev->stats.tx_aborted_errors++; 1006 if(tmdp->status2 & XMIT_LCAR) 1007 dev->stats.tx_carrier_errors++; 1008 if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) { 1009 /* this stops the xmitter */ 1010 dev->stats.tx_fifo_errors++; 1011 if(debuglevel > 0) 1012 printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name); 1013 if(p->features & INIT_RING_BEFORE_START) { 1014 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; /* test: resend this frame */ 1015 ni65_stop_start(dev,p); 1016 break; /* no more Xmit processing .. */ 1017 } 1018 else 1019 ni65_stop_start(dev,p); 1020 } 1021 if(debuglevel > 2) 1022 printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2); 1023 if(!(csr0 & CSR0_BABL)) /* don't count errors twice */ 1024 dev->stats.tx_errors++; 1025 tmdp->status2 = 0; 1026 } 1027 else { 1028 dev->stats.tx_bytes -= (short)(tmdp->blen); 1029 dev->stats.tx_packets++; 1030 } 1031 1032#ifdef XMT_VIA_SKB 1033 if(p->tmd_skb[p->tmdlast]) { 1034 dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]); 1035 p->tmd_skb[p->tmdlast] = NULL; 1036 } 1037#endif 1038 1039 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); 1040 if(p->tmdlast == p->tmdnum) 1041 p->xmit_queued = 0; 1042 } 1043 netif_wake_queue(dev); 1044} 1045 1046/* 1047 * We have received a packet 1048 */ 1049static void ni65_recv_intr(struct net_device *dev,int csr0) 1050{ 1051 struct rmd *rmdp; 1052 int rmdstat,len; 1053 int cnt=0; 1054 struct priv *p = dev->ml_priv; 1055 1056 rmdp = p->rmdhead + p->rmdnum; 1057 while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN)) 1058 { 1059 cnt++; 1060 if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */ 1061 { 1062 if(!(rmdstat & RCV_ERR)) { 1063 if(rmdstat & RCV_START) 1064 { 1065 dev->stats.rx_length_errors++; 1066 printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff); 1067 } 1068 } 1069 else { 1070 if(debuglevel > 2) 1071 printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n", 1072 dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) ); 1073 if(rmdstat & RCV_FRAM) 1074 dev->stats.rx_frame_errors++; 1075 if(rmdstat & RCV_OFLO) 1076 dev->stats.rx_over_errors++; 1077 if(rmdstat & RCV_CRC) 1078 dev->stats.rx_crc_errors++; 1079 if(rmdstat & RCV_BUF_ERR) 1080 dev->stats.rx_fifo_errors++; 1081 } 1082 if(!(csr0 & CSR0_MISS)) /* don't count errors twice */ 1083 dev->stats.rx_errors++; 1084 } 1085 else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60) 1086 { 1087#ifdef RCV_VIA_SKB 1088 struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC); 1089 if (skb) 1090 skb_reserve(skb,16); 1091#else 1092 struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); 1093#endif 1094 if(skb) 1095 { 1096 skb_reserve(skb,2); 1097#ifdef RCV_VIA_SKB 1098 if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) { 1099 skb_put(skb,len); 1100 skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len); 1101 } 1102 else { 1103 struct sk_buff *skb1 = p->recv_skb[p->rmdnum]; 1104 skb_put(skb,R_BUF_SIZE); 1105 p->recv_skb[p->rmdnum] = skb; 1106 rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); 1107 skb = skb1; 1108 skb_trim(skb,len); 1109 } 1110#else 1111 skb_put(skb,len); 1112 skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len); 1113#endif 1114 dev->stats.rx_packets++; 1115 dev->stats.rx_bytes += len; 1116 skb->protocol=eth_type_trans(skb,dev); 1117 netif_rx(skb); 1118 } 1119 else 1120 { 1121 printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); 1122 dev->stats.rx_dropped++; 1123 } 1124 } 1125 else { 1126 printk(KERN_INFO "%s: received runt packet\n",dev->name); 1127 dev->stats.rx_errors++; 1128 } 1129 rmdp->blen = -(R_BUF_SIZE-8); 1130 rmdp->mlen = 0; 1131 rmdp->u.s.status = RCV_OWN; /* change owner */ 1132 p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1); 1133 rmdp = p->rmdhead + p->rmdnum; 1134 } 1135} 1136 1137/* 1138 * kick xmitter .. 1139 */ 1140 1141static void ni65_timeout(struct net_device *dev) 1142{ 1143 int i; 1144 struct priv *p = dev->ml_priv; 1145 1146 printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name); 1147 for(i=0;i<TMDNUM;i++) 1148 printk("%02x ",p->tmdhead[i].u.s.status); 1149 printk("\n"); 1150 ni65_lance_reinit(dev); 1151 dev->trans_start = jiffies; /* prevent tx timeout */ 1152 netif_wake_queue(dev); 1153} 1154 1155/* 1156 * Send a packet 1157 */ 1158 1159static netdev_tx_t ni65_send_packet(struct sk_buff *skb, 1160 struct net_device *dev) 1161{ 1162 struct priv *p = dev->ml_priv; 1163 1164 netif_stop_queue(dev); 1165 1166 if (test_and_set_bit(0, (void*)&p->lock)) { 1167 printk(KERN_ERR "%s: Queue was locked.\n", dev->name); 1168 return NETDEV_TX_BUSY; 1169 } 1170 1171 { 1172 short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; 1173 struct tmd *tmdp; 1174 unsigned long flags; 1175 1176#ifdef XMT_VIA_SKB 1177 if( (unsigned long) (skb->data + skb->len) > 0x1000000) { 1178#endif 1179 1180 skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum], 1181 skb->len > T_BUF_SIZE ? T_BUF_SIZE : 1182 skb->len); 1183 if (len > skb->len) 1184 memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len); 1185 dev_kfree_skb (skb); 1186 1187 spin_lock_irqsave(&p->ring_lock, flags); 1188 tmdp = p->tmdhead + p->tmdnum; 1189 tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]); 1190 p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1); 1191 1192#ifdef XMT_VIA_SKB 1193 } 1194 else { 1195 spin_lock_irqsave(&p->ring_lock, flags); 1196 1197 tmdp = p->tmdhead + p->tmdnum; 1198 tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); 1199 p->tmd_skb[p->tmdnum] = skb; 1200 } 1201#endif 1202 tmdp->blen = -len; 1203 1204 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; 1205 writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */ 1206 1207 p->xmit_queued = 1; 1208 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); 1209 1210 if(p->tmdnum != p->tmdlast) 1211 netif_wake_queue(dev); 1212 1213 p->lock = 0; 1214 1215 spin_unlock_irqrestore(&p->ring_lock, flags); 1216 } 1217 1218 return NETDEV_TX_OK; 1219} 1220 1221static void set_multicast_list(struct net_device *dev) 1222{ 1223 if(!ni65_lance_reinit(dev)) 1224 printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name); 1225 netif_wake_queue(dev); 1226} 1227 1228#ifdef MODULE 1229static struct net_device *dev_ni65; 1230 1231module_param(irq, int, 0); 1232module_param(io, int, 0); 1233module_param(dma, int, 0); 1234MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)"); 1235MODULE_PARM_DESC(io, "ni6510 I/O base address"); 1236MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)"); 1237 1238int __init init_module(void) 1239{ 1240 dev_ni65 = ni65_probe(-1); 1241 return PTR_ERR_OR_ZERO(dev_ni65); 1242} 1243 1244void __exit cleanup_module(void) 1245{ 1246 unregister_netdev(dev_ni65); 1247 cleanup_card(dev_ni65); 1248 free_netdev(dev_ni65); 1249} 1250#endif /* MODULE */ 1251 1252MODULE_LICENSE("GPL"); 1253