File: /usr/src/linux/drivers/net/ni5010.c
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
72 static const char *boardname = "NI5010";
73 static 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 */
77 static 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. */
85 static 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. */
95 struct 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
103 extern int ni5010_probe(struct net_device *dev);
104 static int ni5010_probe1(struct net_device *dev, int ioaddr);
105 static int ni5010_open(struct net_device *dev);
106 static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
107 static void ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs);
108 static void ni5010_rx(struct net_device *dev);
109 static void ni5010_timeout(struct net_device *dev);
110 static int ni5010_close(struct net_device *dev);
111 static struct net_device_stats *ni5010_get_stats(struct net_device *dev);
112 static void ni5010_set_multicast_list(struct net_device *dev);
113 static void reset_receiver(struct net_device *dev);
114
115 static int process_xmt_interrupt(struct net_device *dev);
116 #define tx_done(dev) 1
117 static void hardware_send_packet(struct net_device *dev, char *buf, int length);
118 static void chipset_init(struct net_device *dev, int startp);
119 static void dump_packet(void *buf, int len);
120 static void ni5010_show_registers(struct net_device *dev);
121
122
123 int __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
156 static inline int rd_port(int ioaddr)
157 {
158 inb(IE_RBUF);
159 return inb(IE_SAPROM);
160 }
161
162 static 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); /* FIXME: Necessary? */
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
187 static 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
350 static 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
406 static 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
418 static 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 /* FIXME: Give it a real kick here */
424 chipset_init(dev, 1);
425 dev->trans_start = jiffies;
426 netif_wake_queue(dev);
427 }
428
429 static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev)
430 {
431 int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
432
433 PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
434
435 /*
436 * Block sending
437 */
438
439 netif_stop_queue(dev);
440 hardware_send_packet(dev, (unsigned char *)skb->data, length);
441 dev->trans_start = jiffies;
442 dev_kfree_skb (skb);
443 return 0;
444 }
445
446 /*
447 * The typical workload of the driver:
448 * Handle the network interface interrupts.
449 */
450 static void ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs)
451 {
452 struct net_device *dev = dev_id;
453 struct ni5010_local *lp;
454 int ioaddr, status;
455 int xmit_was_error = 0;
456
457 PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
458
459 ioaddr = dev->base_addr;
460 lp = (struct ni5010_local *)dev->priv;
461
462 status = inb(IE_ISTAT);
463 PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
464
465 if ((status & IS_R_INT) == 0) ni5010_rx(dev);
466
467 if ((status & IS_X_INT) == 0) {
468 xmit_was_error = process_xmt_interrupt(dev);
469 }
470
471 if ((status & IS_DMA_INT) == 0) {
472 PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name));
473 outb(0, IE_DMA_RST); /* Reset DMA int */
474 }
475
476 if (!xmit_was_error)
477 reset_receiver(dev);
478 return;
479 }
480
481
482 static void dump_packet(void *buf, int len)
483 {
484 int i;
485
486 printk(KERN_DEBUG "Packet length = %#4x\n", len);
487 for (i = 0; i < len; i++){
488 if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i);
489 if (i % 2 == 0) printk(" ");
490 printk("%2.2x", ((unsigned char *)buf)[i]);
491 if (i % 16 == 15) printk("\n");
492 }
493 printk("\n");
494
495 return;
496 }
497
498 /* We have a good packet, get it out of the buffer. */
499 static void ni5010_rx(struct net_device *dev)
500 {
501 struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
502 int ioaddr = dev->base_addr;
503 unsigned char rcv_stat;
504 struct sk_buff *skb;
505
506 PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
507
508 rcv_stat = inb(EDLC_RSTAT);
509 PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
510
511 if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
512 PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
513 lp->stats.rx_errors++;
514 if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++;
515 if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++;
516 if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++;
517 if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++;
518 outb(0xff, EDLC_RCLR); /* Clear the interrupt */
519 return;
520 }
521
522 outb(0xff, EDLC_RCLR); /* Clear the interrupt */
523
524 lp->i_pkt_size = inw(IE_RCNT);
525 if (lp->i_pkt_size > ETH_FRAME_LEN || lp->i_pkt_size < 10 ) {
526 PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
527 dev->name, lp->i_pkt_size));
528 lp->stats.rx_errors++;
529 lp->stats.rx_length_errors++;
530 return;
531 }
532
533 /* Malloc up new buffer. */
534 skb = dev_alloc_skb(lp->i_pkt_size + 3);
535 if (skb == NULL) {
536 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
537 lp->stats.rx_dropped++;
538 return;
539 }
540
541 skb->dev = dev;
542 skb_reserve(skb, 2);
543
544 /* Read packet into buffer */
545 outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */
546 outw(0, IE_GP); /* Seek to beginning of packet */
547 insb(IE_RBUF, skb_put(skb, lp->i_pkt_size), lp->i_pkt_size);
548
549 if (NI5010_DEBUG >= 4)
550 dump_packet(skb->data, skb->len);
551
552 skb->protocol = eth_type_trans(skb,dev);
553 netif_rx(skb);
554 dev->last_rx = jiffies;
555 lp->stats.rx_packets++;
556 lp->stats.rx_bytes += lp->i_pkt_size;
557
558 PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
559 dev->name, lp->i_pkt_size));
560
561 }
562
563 static int process_xmt_interrupt(struct net_device *dev)
564 {
565 struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
566 int ioaddr = dev->base_addr;
567 int xmit_stat;
568
569 PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
570
571 xmit_stat = inb(EDLC_XSTAT);
572 PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
573
574 outb(0, EDLC_XMASK); /* Disable xmit IRQ's */
575 outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */
576
577 if (xmit_stat & XS_COLL){
578 PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
579 dev->name));
580 outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
581 /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */
582 outb(MM_EN_XMT | MM_MUX, IE_MMODE);
583 outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */
584 lp->stats.collisions++;
585 return 1;
586 }
587
588 /* FIXME: handle other xmt error conditions */
589
590 lp->stats.tx_packets++;
591 lp->stats.tx_bytes += lp->o_pkt_size;
592 netif_wake_queue(dev);
593
594 PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
595 dev->name, lp->o_pkt_size));
596
597 return 0;
598 }
599
600 /* The inverse routine to ni5010_open(). */
601 static int ni5010_close(struct net_device *dev)
602 {
603 int ioaddr = dev->base_addr;
604
605 PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
606 #ifdef jumpered_interrupts
607 free_irq(dev->irq, NULL);
608 #endif
609 /* Put card in held-RESET state */
610 outb(0, IE_MMODE);
611 outb(RS_RESET, EDLC_RESET);
612
613 netif_stop_queue(dev);
614
615 PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
616 return 0;
617
618 }
619
620 /* Get the current statistics. This may be called with the card open or
621 closed. */
622 static struct net_device_stats *ni5010_get_stats(struct net_device *dev)
623 {
624 struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
625
626 PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name));
627
628 if (NI5010_DEBUG) ni5010_show_registers(dev);
629
630 /* cli(); */
631 /* Update the statistics from the device registers. */
632 /* We do this in the interrupt handler */
633 /* sti(); */
634
635 return &lp->stats;
636 }
637
638 /* Set or clear the multicast filter for this adaptor.
639 num_addrs == -1 Promiscuous mode, receive all packets
640 num_addrs == 0 Normal mode, clear multicast list
641 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
642 best-effort filtering.
643 */
644 static void ni5010_set_multicast_list(struct net_device *dev)
645 {
646 short ioaddr = dev->base_addr;
647
648 PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
649
650 if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) {
651 dev->flags |= IFF_PROMISC;
652 outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
653 PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
654 } else if (dev->mc_list) {
655 /* Sorry, multicast not supported */
656 PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name));
657 outb(RMD_BROADCAST, EDLC_RMODE);
658 } else {
659 PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
660 outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */
661 }
662 }
663
664 static void hardware_send_packet(struct net_device *dev, char *buf, int length)
665 {
666 struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
667 int ioaddr = dev->base_addr;
668 unsigned long flags;
669 unsigned int buf_offs;
670
671 PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
672
673 if (length > ETH_FRAME_LEN) {
674 PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
675 dev->name));
676 return;
677 }
678
679 if (NI5010_DEBUG) ni5010_show_registers(dev);
680
681 if (inb(IE_ISTAT) & IS_EN_XMT) {
682 PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
683 dev->name));
684 return;
685 }
686
687 if (NI5010_DEBUG > 3) dump_packet(buf, length);
688
689 buf_offs = NI5010_BUFSIZE - length;
690 lp->o_pkt_size = length;
691
692 save_flags(flags);
693 cli();
694
695 outb(0, EDLC_RMASK); /* Mask all receive interrupts */
696 outb(0, IE_MMODE); /* Put Xmit buffer on system bus */
697 outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */
698
699 outw(buf_offs, IE_GP); /* Point GP at start of packet */
700 outsb(IE_XBUF, buf, length); /* Put data in buffer */
701 outw(buf_offs, IE_GP); /* Rewrite where packet starts */
702
703 /* should work without that outb() (Crynwr used it) */
704 /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
705 outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
706 outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
707
708 restore_flags(flags);
709
710 netif_wake_queue(dev);
711
712 if (NI5010_DEBUG) ni5010_show_registers(dev);
713 }
714
715 static void chipset_init(struct net_device *dev, int startp)
716 {
717 /* FIXME: Move some stuff here */
718 PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
719 }
720
721 static void ni5010_show_registers(struct net_device *dev)
722 {
723 int ioaddr = dev->base_addr;
724
725 PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
726 PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
727 PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
728 PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
729 PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
730 PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
731 PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
732 }
733
734 #ifdef MODULE
735 static struct net_device dev_ni5010;
736 static int io;
737 static int irq;
738
739 MODULE_PARM(io, "i");
740 MODULE_PARM(irq, "i");
741 MODULE_PARM_DESC(io, "ni5010 I/O base address");
742 MODULE_PARM_DESC(irq, "ni5010 IRQ number");
743
744 int init_module(void)
745 {
746 int result;
747
748 PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
749 /*
750 if(io <= 0 || irq == 0){
751 printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
752 printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
753 return -EINVAL;
754 }
755 */
756 if (io <= 0){
757 printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
758 }
759
760 PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
761 dev_ni5010.irq=irq;
762 dev_ni5010.base_addr=io;
763 dev_ni5010.init=ni5010_probe;
764 if ((result = register_netdev(&dev_ni5010)) != 0) {
765 PRINTK((KERN_WARNING "%s: register_netdev returned %d.\n",
766 boardname, result));
767 return -EIO;
768 }
769 return 0;
770 }
771
772 void
773 cleanup_module(void)
774 {
775 PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
776
777 unregister_netdev(&dev_ni5010);
778
779 release_region(dev_ni5010.base_addr, NI5010_IO_EXTENT);
780 if (dev_ni5010.priv != NULL){
781 kfree(dev_ni5010.priv);
782 dev_ni5010.priv = NULL;
783 }
784 }
785 #endif /* MODULE */
786
787 /*
788 * Local variables:
789 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c"
790 * version-control: t
791 * kept-new-versions: 5
792 * tab-width: 4
793 * End:
794 */
795