1/* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard. 2 * 3 * Copyright 1996,1997 Jan-Pascal van Best and Andreas Mohr. 4 * 5 * This software may be used and distributed according to the terms 6 * of the GNU General Public License, incorporated herein by reference. 7 * 8 * The authors may be reached as: 9 * jvbest@wi.leidenuniv.nl a.mohr@mailto.de 10 * or by snail mail as 11 * Jan-Pascal van Best Andreas Mohr 12 * Klikspaanweg 58-4 Stauferstr. 6 13 * 2324 LZ Leiden D-71272 Renningen 14 * The Netherlands Germany 15 * 16 * Sources: 17 * Donald Becker's "skeleton.c" 18 * Crynwr ni5010 packet driver 19 * 20 * Changes: 21 * v0.0: First test version 22 * v0.1: First working version 23 * v0.2: 24 * v0.3->v0.90: Now demand setting io and irq when loading as module 25 * 970430 v0.91: modified for Linux 2.1.14 26 * v0.92: Implemented Andreas' (better) NI5010 probe 27 * 970503 v0.93: Fixed auto-irq failure on warm reboot (JB) 28 * 970623 v1.00: First kernel version (AM) 29 * 970814 v1.01: Added detection of onboard receive buffer size (AM) 30 * Bugs: 31 * - None known... 32 * - Note that you have to patch ifconfig for the new /proc/net/dev 33 * format. It gives incorrect stats otherwise. 34 * 35 * To do: 36 * Fix all bugs :-) 37 * Move some stuff to chipset_init() 38 * Handle xmt errors other than collisions 39 * Complete merge with Andreas' driver 40 * Implement ring buffers (Is this useful? You can't squeeze 41 * too many packet in a 2k buffer!) 42 * Implement DMA (Again, is this useful? Some docs says DMA is 43 * slower than programmed I/O) 44 * 45 * Compile with: 46 * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \ 47 * -DMODULE -c ni5010.c 48 * 49 * Insert with e.g.: 50 * insmod ni5010.o io=0x300 irq=5 51 */ 52 53#include <linux/module.h> 54#include <linux/kernel.h> 55#include <linux/string.h> 56#include <linux/errno.h> 57#include <linux/ioport.h> 58#include <linux/slab.h> 59#include <linux/interrupt.h> 60#include <linux/delay.h> 61#include <linux/init.h> 62#include <asm/bitops.h> 63#include <asm/io.h> 64#include <asm/dma.h> 65 66#include <linux/netdevice.h> 67#include <linux/etherdevice.h> 68#include <linux/skbuff.h> 69 70#include "ni5010.h" 71 72static const char *boardname = "NI5010"; 73static char *version = 74 "ni5010.c: v1.00 06/23/97 Jan-Pascal van Best and Andreas Mohr\n"; 75 76/* bufsize_rcv == 0 means autoprobing */ 77static unsigned int bufsize_rcv; 78 79#define jumpered_interrupts /* IRQ line jumpered on board */ 80#undef jumpered_dma /* No DMA used */ 81#undef FULL_IODETECT /* Only detect in portlist */ 82 83#ifndef FULL_IODETECT 84/* A zero-terminated list of I/O addresses to be probed. */ 85static unsigned int ni5010_portlist[] __initdata = 86 { 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 }; 87#endif 88 89/* Use 0 for production, 1 for verification, >2 for debug */ 90#ifndef NI5010_DEBUG 91#define NI5010_DEBUG 0 92#endif 93 94/* Information that needs to be kept for each board. */ 95struct ni5010_local { 96 struct net_device_stats stats; 97 int o_pkt_size; 98 int i_pkt_size; 99}; 100 101/* Index to functions, as function prototypes. */ 102 103extern int ni5010_probe(struct net_device *dev); 104static int ni5010_probe1(struct net_device *dev, int ioaddr); 105static int ni5010_open(struct net_device *dev); 106static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev); 107static void ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs); 108static void ni5010_rx(struct net_device *dev); 109static void ni5010_timeout(struct net_device *dev); 110static int ni5010_close(struct net_device *dev); 111static struct net_device_stats *ni5010_get_stats(struct net_device *dev); 112static void ni5010_set_multicast_list(struct net_device *dev); 113static void reset_receiver(struct net_device *dev); 114 115static int process_xmt_interrupt(struct net_device *dev); 116#define tx_done(dev) 1 117static void hardware_send_packet(struct net_device *dev, char *buf, int length); 118static void chipset_init(struct net_device *dev, int startp); 119static void dump_packet(void *buf, int len); 120static void ni5010_show_registers(struct net_device *dev); 121 122 123int __init ni5010_probe(struct net_device *dev) 124{ 125 int *port; 126 int base_addr = dev->base_addr; 127 128 PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name)); 129 130 SET_MODULE_OWNER(dev); 131 132 if (base_addr > 0x1ff) /* Check a single specified location. */ 133 return ni5010_probe1(dev, base_addr); 134 else if (base_addr != 0) /* Don't probe at all. */ 135 return -ENXIO; 136 137#ifdef FULL_IODETECT 138 for (int ioaddr=0x200; ioaddr<0x400; ioaddr+=0x20) { 139 if (check_region(ioaddr, NI5010_IO_EXTENT)) 140 continue; 141 if (ni5010_probe1(dev, ioaddr) == 0) 142 return 0; 143 } 144#else 145 for (port = ni5010_portlist; *port; port++) { 146 int ioaddr = *port; 147 if (check_region(ioaddr, NI5010_IO_EXTENT)) 148 continue; 149 if (ni5010_probe1(dev, ioaddr) == 0) 150 return 0; 151 } 152#endif /* FULL_IODETECT */ 153 return -ENODEV; 154} 155 156static inline int rd_port(int ioaddr) 157{ 158 inb(IE_RBUF); 159 return inb(IE_SAPROM); 160} 161 162static void __init trigger_irq(int ioaddr) 163{ 164 outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */ 165 outb(0x00, IE_RESET); /* Board reset */ 166 outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */ 167 outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */ 168 outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */ 169 outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */ 170 /* 171 * Transmit packet mode: Ignore parity, Power xcvr, 172 * Enable loopback 173 */ 174 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); 175 outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */ 176 outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */ 177 udelay(50); 178 outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */ 179} 180 181/* 182 * This is the real probe routine. Linux has a history of friendly device 183 * probes on the ISA bus. A good device probes avoids doing writes, and 184 * verifies that the correct device exists and functions. 185 */ 186 187static int __init ni5010_probe1(struct net_device *dev, int ioaddr) 188{ 189 static unsigned version_printed; 190 int i; 191 unsigned int data = 0; 192 int boguscount = 40; 193 194 /* 195 * This is no "official" probe method, I've rather tested which 196 * probe works best with my seven NI5010 cards 197 * (they have very different serial numbers) 198 * Suggestions or failure reports are very, very welcome ! 199 * But I think it is a relatively good probe method 200 * since it doesn't use any "outb" 201 * It should be nearly 100% reliable ! 202 * well-known WARNING: this probe method (like many others) 203 * will hang the system if a NE2000 card region is probed ! 204 * 205 * - Andreas 206 */ 207 208 PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n", 209 dev->name, ioaddr)); 210 211 if (inb(ioaddr+0) == 0xff) return -ENODEV; 212 213 while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) & 214 rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff) 215 { 216 if (boguscount-- == 0) return -ENODEV; 217 } 218 219 PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name)); 220 221 for (i=0; i<32; i++) 222 if ( (data = rd_port(ioaddr)) != 0xff) break; 223 if (data==0xff) return -ENODEV; 224 225 PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name)); 226 227 if ( (data == SA_ADDR0) && 228 (rd_port(ioaddr) == SA_ADDR1) && 229 (rd_port(ioaddr) == SA_ADDR2) ) { 230 for (i=0; i<4; i++) rd_port(ioaddr); 231 if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) || 232 (rd_port(ioaddr) != NI5010_MAGICVAL2) ) { 233 return -ENODEV; 234 } 235 } else return -ENODEV; 236 237 PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name)); 238 239 if (NI5010_DEBUG && version_printed++ == 0) 240 printk(KERN_INFO "%s", version); 241 242 printk("NI5010 ethercard probe at 0x%x: ", ioaddr); 243 244 dev->base_addr = ioaddr; 245 246 for (i=0; i<6; i++) { 247 outw(i, IE_GP); 248 printk("%2.2x ", dev->dev_addr[i] = inb(IE_SAPROM)); 249 } 250 251 PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name)); 252 253#ifdef jumpered_interrupts 254 if (dev->irq == 0xff) 255 ; 256 else if (dev->irq < 2) { 257 PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name)); 258 259 autoirq_setup(0); 260 trigger_irq(ioaddr); 261 dev->irq = autoirq_report(2); 262 263 PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name)); 264 265 if (dev->irq == 0) { 266 printk(KERN_WARNING "%s: no IRQ found!\n", dev->name); 267 return -EAGAIN; 268 } 269 PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name)); 270 } else if (dev->irq == 2) { 271 dev->irq = 9; 272 } 273#endif /* jumpered_irq */ 274 PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name)); 275 276 /* DMA is not supported (yet?), so no use detecting it */ 277 278 if (dev->priv == NULL) { 279 dev->priv = kmalloc(sizeof(struct ni5010_local), GFP_KERNEL|GFP_DMA); 280 if (dev->priv == NULL) { 281 printk(KERN_WARNING "%s: Failed to allocate private memory\n", dev->name); 282 return -ENOMEM; 283 } 284 } 285 286 PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name)); 287 288/* get the size of the onboard receive buffer 289 * higher addresses than bufsize are wrapped into real buffer 290 * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer 291 */ 292 if (!bufsize_rcv) { 293 outb(1, IE_MMODE); /* Put Rcv buffer on system bus */ 294 outw(0, IE_GP); /* Point GP at start of packet */ 295 outb(0, IE_RBUF); /* set buffer byte 0 to 0 */ 296 for (i = 1; i < 0xff; i++) { 297 outw(i << 8, IE_GP); /* Point GP at packet size to be tested */ 298 outb(i, IE_RBUF); 299 outw(0x0, IE_GP); /* Point GP at start of packet */ 300 data = inb(IE_RBUF); 301 if (data == i) break; 302 } 303 bufsize_rcv = i << 8; 304 outw(0, IE_GP); /* Point GP at start of packet */ 305 outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */ 306 } 307 printk("// bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE); 308 memset(dev->priv, 0, sizeof(struct ni5010_local)); 309 310 /* Grab the region so we can find another board if autoIRQ fails. */ 311 request_region(ioaddr, NI5010_IO_EXTENT, boardname); 312 313 dev->open = ni5010_open; 314 dev->stop = ni5010_close; 315 dev->hard_start_xmit = ni5010_send_packet; 316 dev->get_stats = ni5010_get_stats; 317 dev->set_multicast_list = ni5010_set_multicast_list; 318 dev->tx_timeout = ni5010_timeout; 319 dev->watchdog_timeo = HZ/20; 320 321 /* Fill in the fields of the device structure with ethernet values. */ 322 ether_setup(dev); 323 324 dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */ 325 326 /* Shut up the ni5010 */ 327 outb(0, EDLC_RMASK); /* Mask all receive interrupts */ 328 outb(0, EDLC_XMASK); /* Mask all xmit interrupts */ 329 outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */ 330 outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */ 331 332 printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq); 333 if (dev->dma) printk(" & DMA %d", dev->dma); 334 printk(".\n"); 335 336 printk(KERN_INFO "Join the NI5010 driver development team!\n"); 337 printk(KERN_INFO "Mail to a.mohr@mailto.de or jvbest@wi.leidenuniv.nl\n"); 338 return 0; 339} 340 341/* 342 * Open/initialize the board. This is called (in the current kernel) 343 * sometime after booting when the 'ifconfig' program is run. 344 * 345 * This routine should set everything up anew at each open, even 346 * registers that "should" only need to be set once at boot, so that 347 * there is non-reboot way to recover if something goes wrong. 348 */ 349 350static int ni5010_open(struct net_device *dev) 351{ 352 int ioaddr = dev->base_addr; 353 int i; 354 355 PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name)); 356 357 if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) { 358 printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq); 359 return -EAGAIN; 360 } 361 PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name)); 362 /* 363 * Always allocate the DMA channel after the IRQ, 364 * and clean up on failure. 365 */ 366#ifdef jumpered_dma 367 if (request_dma(dev->dma, cardname)) { 368 printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma); 369 free_irq(dev->irq, NULL); 370 return -EAGAIN; 371 } 372#endif /* jumpered_dma */ 373 374 PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name)); 375 /* Reset the hardware here. Don't forget to set the station address. */ 376 377 outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */ 378 outb(0, IE_RESET); /* Hardware reset of ni5010 board */ 379 outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */ 380 381 PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name)); 382 /* Set the station address */ 383 for(i = 0;i < 6; i++) { 384 outb(dev->dev_addr[i], EDLC_ADDR + i); 385 } 386 387 PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name)); 388 outb(0, EDLC_XMASK); /* No xmit interrupts for now */ 389 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE); 390 /* Normal packet xmit mode */ 391 outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */ 392 outb(RMD_BROADCAST, EDLC_RMODE); 393 /* Receive broadcast and normal packets */ 394 reset_receiver(dev); /* Ready ni5010 for receiving packets */ 395 396 outb(0, EDLC_RESET); /* Un-reset the ni5010 */ 397 398 netif_start_queue(dev); 399 400 if (NI5010_DEBUG) ni5010_show_registers(dev); 401 402 PRINTK((KERN_DEBUG "%s: open successful\n", dev->name)); 403 return 0; 404} 405 406static void reset_receiver(struct net_device *dev) 407{ 408 int ioaddr = dev->base_addr; 409 410 PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name)); 411 outw(0, IE_GP); /* Receive packet at start of buffer */ 412 outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */ 413 outb(0, IE_MMODE); /* Put EDLC to rcv buffer */ 414 outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */ 415 outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */ 416} 417 418static void ni5010_timeout(struct net_device *dev) 419{ 420 printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, 421 tx_done(dev) ? "IRQ conflict" : "network cable problem"); 422 /* Try to restart the adaptor. */ 423 chipset_init(dev, 1); 424 dev->trans_start = jiffies; 425 netif_wake_queue(dev); 426} 427 428static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev) 429{ 430 int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; 431 432 PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name)); 433 434 /* 435 * Block sending 436 */ 437 438 netif_stop_queue(dev); 439 hardware_send_packet(dev, (unsigned char *)skb->data, length); 440 dev->trans_start = jiffies; 441 dev_kfree_skb (skb); 442 return 0; 443} 444 445/* 446 * The typical workload of the driver: 447 * Handle the network interface interrupts. 448 */ 449static void ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs) 450{ 451 struct net_device *dev = dev_id; 452 struct ni5010_local *lp; 453 int ioaddr, status; 454 int xmit_was_error = 0; 455 456 PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name)); 457 458 ioaddr = dev->base_addr; 459 lp = (struct ni5010_local *)dev->priv; 460 461 status = inb(IE_ISTAT); 462 PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status)); 463 464 if ((status & IS_R_INT) == 0) ni5010_rx(dev); 465 466 if ((status & IS_X_INT) == 0) { 467 xmit_was_error = process_xmt_interrupt(dev); 468 } 469 470 if ((status & IS_DMA_INT) == 0) { 471 PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name)); 472 outb(0, IE_DMA_RST); /* Reset DMA int */ 473 } 474 475 if (!xmit_was_error) 476 reset_receiver(dev); 477 return; 478} 479 480 481static void dump_packet(void *buf, int len) 482{ 483 int i; 484 485 printk(KERN_DEBUG "Packet length = %#4x\n", len); 486 for (i = 0; i < len; i++){ 487 if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i); 488 if (i % 2 == 0) printk(" "); 489 printk("%2.2x", ((unsigned char *)buf)[i]); 490 if (i % 16 == 15) printk("\n"); 491 } 492 printk("\n"); 493 494 return; 495} 496 497/* We have a good packet, get it out of the buffer. */ 498static void ni5010_rx(struct net_device *dev) 499{ 500 struct ni5010_local *lp = (struct ni5010_local *)dev->priv; 501 int ioaddr = dev->base_addr; 502 unsigned char rcv_stat; 503 struct sk_buff *skb; 504 505 PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name)); 506 507 rcv_stat = inb(EDLC_RSTAT); 508 PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat)); 509 510 if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) { 511 PRINTK((KERN_INFO "%s: receive error.\n", dev->name)); 512 lp->stats.rx_errors++; 513 if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++; 514 if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++; 515 if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++; 516 if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++; 517 outb(0xff, EDLC_RCLR); /* Clear the interrupt */ 518 return; 519 } 520 521 outb(0xff, EDLC_RCLR); /* Clear the interrupt */ 522 523 lp->i_pkt_size = inw(IE_RCNT); 524 if (lp->i_pkt_size > ETH_FRAME_LEN || lp->i_pkt_size < 10 ) { 525 PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n", 526 dev->name, lp->i_pkt_size)); 527 lp->stats.rx_errors++; 528 lp->stats.rx_length_errors++; 529 return; 530 } 531 532 /* Malloc up new buffer. */ 533 skb = dev_alloc_skb(lp->i_pkt_size + 3); 534 if (skb == NULL) { 535 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); 536 lp->stats.rx_dropped++; 537 return; 538 } 539 540 skb->dev = dev; 541 skb_reserve(skb, 2); 542 543 /* Read packet into buffer */ 544 outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */ 545 outw(0, IE_GP); /* Seek to beginning of packet */ 546 insb(IE_RBUF, skb_put(skb, lp->i_pkt_size), lp->i_pkt_size); 547 548 if (NI5010_DEBUG >= 4) 549 dump_packet(skb->data, skb->len); 550 551 skb->protocol = eth_type_trans(skb,dev); 552 netif_rx(skb); 553 dev->last_rx = jiffies; 554 lp->stats.rx_packets++; 555 lp->stats.rx_bytes += lp->i_pkt_size; 556 557 PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n", 558 dev->name, lp->i_pkt_size)); 559 560} 561 562static int process_xmt_interrupt(struct net_device *dev) 563{ 564 struct ni5010_local *lp = (struct ni5010_local *)dev->priv; 565 int ioaddr = dev->base_addr; 566 int xmit_stat; 567 568 PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name)); 569 570 xmit_stat = inb(EDLC_XSTAT); 571 PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat)); 572 573 outb(0, EDLC_XMASK); /* Disable xmit IRQ's */ 574 outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */ 575 576 if (xmit_stat & XS_COLL){ 577 PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n", 578 dev->name)); 579 outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP); 580 /* outb(0, IE_MMODE); */ 581 outb(MM_EN_XMT | MM_MUX, IE_MMODE); 582 outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */ 583 lp->stats.collisions++; 584 return 1; 585 } 586 587 588 lp->stats.tx_packets++; 589 lp->stats.tx_bytes += lp->o_pkt_size; 590 netif_wake_queue(dev); 591 592 PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n", 593 dev->name, lp->o_pkt_size)); 594 595 return 0; 596} 597 598/* The inverse routine to ni5010_open(). */ 599static int ni5010_close(struct net_device *dev) 600{ 601 int ioaddr = dev->base_addr; 602 603 PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name)); 604#ifdef jumpered_interrupts 605 free_irq(dev->irq, NULL); 606#endif 607 /* Put card in held-RESET state */ 608 outb(0, IE_MMODE); 609 outb(RS_RESET, EDLC_RESET); 610 611 netif_stop_queue(dev); 612 613 PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname)); 614 return 0; 615 616} 617 618/* Get the current statistics. This may be called with the card open or 619 closed. */ 620static struct net_device_stats *ni5010_get_stats(struct net_device *dev) 621{ 622 struct ni5010_local *lp = (struct ni5010_local *)dev->priv; 623 624 PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name)); 625 626 if (NI5010_DEBUG) ni5010_show_registers(dev); 627 628 /* cli(); */ 629 /* Update the statistics from the device registers. */ 630 /* We do this in the interrupt handler */ 631 /* sti(); */ 632 633 return &lp->stats; 634} 635 636/* Set or clear the multicast filter for this adaptor. 637 num_addrs == -1 Promiscuous mode, receive all packets 638 num_addrs == 0 Normal mode, clear multicast list 639 num_addrs > 0 Multicast mode, receive normal and MC packets, and do 640 best-effort filtering. 641*/ 642static void ni5010_set_multicast_list(struct net_device *dev) 643{ 644 short ioaddr = dev->base_addr; 645 646 PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name)); 647 648 if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) { 649 dev->flags |= IFF_PROMISC; 650 outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */ 651 PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name)); 652 } else if (dev->mc_list) { 653 /* Sorry, multicast not supported */ 654 PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name)); 655 outb(RMD_BROADCAST, EDLC_RMODE); 656 } else { 657 PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name)); 658 outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */ 659 } 660} 661 662static void hardware_send_packet(struct net_device *dev, char *buf, int length) 663{ 664 struct ni5010_local *lp = (struct ni5010_local *)dev->priv; 665 int ioaddr = dev->base_addr; 666 unsigned long flags; 667 unsigned int buf_offs; 668 669 PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name)); 670 671 if (length > ETH_FRAME_LEN) { 672 PRINTK((KERN_WARNING "%s: packet too large, not possible\n", 673 dev->name)); 674 return; 675 } 676 677 if (NI5010_DEBUG) ni5010_show_registers(dev); 678 679 if (inb(IE_ISTAT) & IS_EN_XMT) { 680 PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n", 681 dev->name)); 682 return; 683 } 684 685 if (NI5010_DEBUG > 3) dump_packet(buf, length); 686 687 buf_offs = NI5010_BUFSIZE - length; 688 lp->o_pkt_size = length; 689 690 save_flags(flags); 691 cli(); 692 693 outb(0, EDLC_RMASK); /* Mask all receive interrupts */ 694 outb(0, IE_MMODE); /* Put Xmit buffer on system bus */ 695 outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */ 696 697 outw(buf_offs, IE_GP); /* Point GP at start of packet */ 698 outsb(IE_XBUF, buf, length); /* Put data in buffer */ 699 outw(buf_offs, IE_GP); /* Rewrite where packet starts */ 700 701 /* should work without that outb() (Crynwr used it) */ 702 /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */ 703 outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */ 704 outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */ 705 706 restore_flags(flags); 707 708 netif_wake_queue(dev); 709 710 if (NI5010_DEBUG) ni5010_show_registers(dev); 711} 712 713static void chipset_init(struct net_device *dev, int startp) 714{ 715 PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name)); 716} 717 718static void ni5010_show_registers(struct net_device *dev) 719{ 720 int ioaddr = dev->base_addr; 721 722 PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT))); 723 PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK))); 724 PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT))); 725 PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK))); 726 PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE))); 727 PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE))); 728 PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT))); 729} 730 731#ifdef MODULE 732static struct net_device dev_ni5010; 733static int io; 734static int irq; 735 736MODULE_PARM(io, "i"); 737MODULE_PARM(irq, "i"); 738MODULE_PARM_DESC(io, "ni5010 I/O base address"); 739MODULE_PARM_DESC(irq, "ni5010 IRQ number"); 740 741int init_module(void) 742{ 743 int result; 744 745 PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname)); 746 /* 747 if(io <= 0 || irq == 0){ 748 printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname); 749 printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname); 750 return -EINVAL; 751 } 752 */ 753 if (io <= 0){ 754 printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname); 755 } 756 757 PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io)); 758 dev_ni5010.irq=irq; 759 dev_ni5010.base_addr=io; 760 dev_ni5010.init=ni5010_probe; 761 if ((result = register_netdev(&dev_ni5010)) != 0) { 762 PRINTK((KERN_WARNING "%s: register_netdev returned %d.\n", 763 boardname, result)); 764 return -EIO; 765 } 766 return 0; 767} 768 769void 770cleanup_module(void) 771{ 772 PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname)); 773 774 unregister_netdev(&dev_ni5010); 775 776 release_region(dev_ni5010.base_addr, NI5010_IO_EXTENT); 777 if (dev_ni5010.priv != NULL){ 778 kfree(dev_ni5010.priv); 779 dev_ni5010.priv = NULL; 780 } 781} 782#endif /* MODULE */ 783MODULE_LICENSE("GPL"); 784 785/* 786 * Local variables: 787 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c" 788 * version-control: t 789 * kept-new-versions: 5 790 * tab-width: 4 791 * End: 792 */ 793