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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/ni5010.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/ni5010.c')
-rw-r--r--drivers/net/ni5010.c812
1 files changed, 812 insertions, 0 deletions
diff --git a/drivers/net/ni5010.c b/drivers/net/ni5010.c
new file mode 100644
index 000000000000..2ab01a5d1d22
--- /dev/null
+++ b/drivers/net/ni5010.c
@@ -0,0 +1,812 @@
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 <linux/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 ports[] __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 spinlock_t lock;
99};
100
101/* Index to functions, as function prototypes. */
102
103static int ni5010_probe1(struct net_device *dev, int ioaddr);
104static int ni5010_open(struct net_device *dev);
105static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
106static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs);
107static void ni5010_rx(struct net_device *dev);
108static void ni5010_timeout(struct net_device *dev);
109static int ni5010_close(struct net_device *dev);
110static struct net_device_stats *ni5010_get_stats(struct net_device *dev);
111static void ni5010_set_multicast_list(struct net_device *dev);
112static void reset_receiver(struct net_device *dev);
113
114static int process_xmt_interrupt(struct net_device *dev);
115#define tx_done(dev) 1
116static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad);
117static void chipset_init(struct net_device *dev, int startp);
118static void dump_packet(void *buf, int len);
119static void ni5010_show_registers(struct net_device *dev);
120
121static int io;
122static int irq;
123
124struct net_device * __init ni5010_probe(int unit)
125{
126 struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local));
127 int *port;
128 int err = 0;
129
130 if (!dev)
131 return ERR_PTR(-ENOMEM);
132
133 if (unit >= 0) {
134 sprintf(dev->name, "eth%d", unit);
135 netdev_boot_setup_check(dev);
136 io = dev->base_addr;
137 irq = dev->irq;
138 }
139
140 PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name));
141
142 SET_MODULE_OWNER(dev);
143
144 if (io > 0x1ff) { /* Check a single specified location. */
145 err = ni5010_probe1(dev, io);
146 } else if (io != 0) { /* Don't probe at all. */
147 err = -ENXIO;
148 } else {
149#ifdef FULL_IODETECT
150 for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20)
151 ;
152 if (io == 0x400)
153 err = -ENODEV;
154
155#else
156 for (port = ports; *port && ni5010_probe1(dev, *port); port++)
157 ;
158 if (!*port)
159 err = -ENODEV;
160#endif /* FULL_IODETECT */
161 }
162 if (err)
163 goto out;
164 err = register_netdev(dev);
165 if (err)
166 goto out1;
167 return dev;
168out1:
169 release_region(dev->base_addr, NI5010_IO_EXTENT);
170out:
171 free_netdev(dev);
172 return ERR_PTR(err);
173}
174
175static inline int rd_port(int ioaddr)
176{
177 inb(IE_RBUF);
178 return inb(IE_SAPROM);
179}
180
181static void __init trigger_irq(int ioaddr)
182{
183 outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */
184 outb(0x00, IE_RESET); /* Board reset */
185 outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */
186 outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */
187 outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */
188 outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */
189 /*
190 * Transmit packet mode: Ignore parity, Power xcvr,
191 * Enable loopback
192 */
193 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
194 outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */
195 outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */
196 udelay(50); /* FIXME: Necessary? */
197 outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */
198}
199
200/*
201 * This is the real probe routine. Linux has a history of friendly device
202 * probes on the ISA bus. A good device probes avoids doing writes, and
203 * verifies that the correct device exists and functions.
204 */
205
206static int __init ni5010_probe1(struct net_device *dev, int ioaddr)
207{
208 static unsigned version_printed;
209 struct ni5010_local *lp;
210 int i;
211 unsigned int data = 0;
212 int boguscount = 40;
213 int err = -ENODEV;
214
215 dev->base_addr = ioaddr;
216 dev->irq = irq;
217
218 if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname))
219 return -EBUSY;
220
221 /*
222 * This is no "official" probe method, I've rather tested which
223 * probe works best with my seven NI5010 cards
224 * (they have very different serial numbers)
225 * Suggestions or failure reports are very, very welcome !
226 * But I think it is a relatively good probe method
227 * since it doesn't use any "outb"
228 * It should be nearly 100% reliable !
229 * well-known WARNING: this probe method (like many others)
230 * will hang the system if a NE2000 card region is probed !
231 *
232 * - Andreas
233 */
234
235 PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n",
236 dev->name, ioaddr));
237
238 if (inb(ioaddr+0) == 0xff)
239 goto out;
240
241 while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) &
242 rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff)
243 {
244 if (boguscount-- == 0)
245 goto out;
246 }
247
248 PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name));
249
250 for (i=0; i<32; i++)
251 if ( (data = rd_port(ioaddr)) != 0xff) break;
252 if (data==0xff)
253 goto out;
254
255 PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name));
256
257 if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) ||
258 (rd_port(ioaddr) != SA_ADDR2))
259 goto out;
260
261 for (i=0; i<4; i++)
262 rd_port(ioaddr);
263
264 if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) ||
265 (rd_port(ioaddr) != NI5010_MAGICVAL2) )
266 goto out;
267
268 PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name));
269
270 if (NI5010_DEBUG && version_printed++ == 0)
271 printk(KERN_INFO "%s", version);
272
273 printk("NI5010 ethercard probe at 0x%x: ", ioaddr);
274
275 dev->base_addr = ioaddr;
276
277 for (i=0; i<6; i++) {
278 outw(i, IE_GP);
279 printk("%2.2x ", dev->dev_addr[i] = inb(IE_SAPROM));
280 }
281
282 PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name));
283
284#ifdef jumpered_interrupts
285 if (dev->irq == 0xff)
286 ;
287 else if (dev->irq < 2) {
288 unsigned long irq_mask;
289
290 PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name));
291
292 irq_mask = probe_irq_on();
293 trigger_irq(ioaddr);
294 mdelay(20);
295 dev->irq = probe_irq_off(irq_mask);
296
297 PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name));
298
299 if (dev->irq == 0) {
300 err = -EAGAIN;
301 printk(KERN_WARNING "%s: no IRQ found!\n", dev->name);
302 goto out;
303 }
304 PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name));
305 } else if (dev->irq == 2) {
306 dev->irq = 9;
307 }
308#endif /* jumpered_irq */
309 PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name));
310
311 /* DMA is not supported (yet?), so no use detecting it */
312 lp = netdev_priv(dev);
313
314 spin_lock_init(&lp->lock);
315
316 PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name));
317
318/* get the size of the onboard receive buffer
319 * higher addresses than bufsize are wrapped into real buffer
320 * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer
321 */
322 if (!bufsize_rcv) {
323 outb(1, IE_MMODE); /* Put Rcv buffer on system bus */
324 outw(0, IE_GP); /* Point GP at start of packet */
325 outb(0, IE_RBUF); /* set buffer byte 0 to 0 */
326 for (i = 1; i < 0xff; i++) {
327 outw(i << 8, IE_GP); /* Point GP at packet size to be tested */
328 outb(i, IE_RBUF);
329 outw(0x0, IE_GP); /* Point GP at start of packet */
330 data = inb(IE_RBUF);
331 if (data == i) break;
332 }
333 bufsize_rcv = i << 8;
334 outw(0, IE_GP); /* Point GP at start of packet */
335 outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */
336 }
337 printk("// bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
338 memset(dev->priv, 0, sizeof(struct ni5010_local));
339
340 dev->open = ni5010_open;
341 dev->stop = ni5010_close;
342 dev->hard_start_xmit = ni5010_send_packet;
343 dev->get_stats = ni5010_get_stats;
344 dev->set_multicast_list = ni5010_set_multicast_list;
345 dev->tx_timeout = ni5010_timeout;
346 dev->watchdog_timeo = HZ/20;
347
348 dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */
349
350 /* Shut up the ni5010 */
351 outb(0, EDLC_RMASK); /* Mask all receive interrupts */
352 outb(0, EDLC_XMASK); /* Mask all xmit interrupts */
353 outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */
354 outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */
355
356 printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq);
357 if (dev->dma) printk(" & DMA %d", dev->dma);
358 printk(".\n");
359
360 printk(KERN_INFO "Join the NI5010 driver development team!\n");
361 printk(KERN_INFO "Mail to a.mohr@mailto.de or jvbest@wi.leidenuniv.nl\n");
362 return 0;
363out:
364 release_region(dev->base_addr, NI5010_IO_EXTENT);
365 return err;
366}
367
368/*
369 * Open/initialize the board. This is called (in the current kernel)
370 * sometime after booting when the 'ifconfig' program is run.
371 *
372 * This routine should set everything up anew at each open, even
373 * registers that "should" only need to be set once at boot, so that
374 * there is non-reboot way to recover if something goes wrong.
375 */
376
377static int ni5010_open(struct net_device *dev)
378{
379 int ioaddr = dev->base_addr;
380 int i;
381
382 PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name));
383
384 if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) {
385 printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq);
386 return -EAGAIN;
387 }
388 PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name));
389 /*
390 * Always allocate the DMA channel after the IRQ,
391 * and clean up on failure.
392 */
393#ifdef jumpered_dma
394 if (request_dma(dev->dma, cardname)) {
395 printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma);
396 free_irq(dev->irq, NULL);
397 return -EAGAIN;
398 }
399#endif /* jumpered_dma */
400
401 PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name));
402 /* Reset the hardware here. Don't forget to set the station address. */
403
404 outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */
405 outb(0, IE_RESET); /* Hardware reset of ni5010 board */
406 outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */
407
408 PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name));
409 /* Set the station address */
410 for(i = 0;i < 6; i++) {
411 outb(dev->dev_addr[i], EDLC_ADDR + i);
412 }
413
414 PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name));
415 outb(0, EDLC_XMASK); /* No xmit interrupts for now */
416 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
417 /* Normal packet xmit mode */
418 outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */
419 outb(RMD_BROADCAST, EDLC_RMODE);
420 /* Receive broadcast and normal packets */
421 reset_receiver(dev); /* Ready ni5010 for receiving packets */
422
423 outb(0, EDLC_RESET); /* Un-reset the ni5010 */
424
425 netif_start_queue(dev);
426
427 if (NI5010_DEBUG) ni5010_show_registers(dev);
428
429 PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
430 return 0;
431}
432
433static void reset_receiver(struct net_device *dev)
434{
435 int ioaddr = dev->base_addr;
436
437 PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name));
438 outw(0, IE_GP); /* Receive packet at start of buffer */
439 outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */
440 outb(0, IE_MMODE); /* Put EDLC to rcv buffer */
441 outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */
442 outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */
443}
444
445static void ni5010_timeout(struct net_device *dev)
446{
447 printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
448 tx_done(dev) ? "IRQ conflict" : "network cable problem");
449 /* Try to restart the adaptor. */
450 /* FIXME: Give it a real kick here */
451 chipset_init(dev, 1);
452 dev->trans_start = jiffies;
453 netif_wake_queue(dev);
454}
455
456static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev)
457{
458 int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
459
460 PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
461
462 /*
463 * Block sending
464 */
465
466 netif_stop_queue(dev);
467 hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len);
468 dev->trans_start = jiffies;
469 dev_kfree_skb (skb);
470 return 0;
471}
472
473/*
474 * The typical workload of the driver:
475 * Handle the network interface interrupts.
476 */
477static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs)
478{
479 struct net_device *dev = dev_id;
480 struct ni5010_local *lp;
481 int ioaddr, status;
482 int xmit_was_error = 0;
483
484 PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
485
486 ioaddr = dev->base_addr;
487 lp = netdev_priv(dev);
488
489 spin_lock(&lp->lock);
490 status = inb(IE_ISTAT);
491 PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
492
493 if ((status & IS_R_INT) == 0) ni5010_rx(dev);
494
495 if ((status & IS_X_INT) == 0) {
496 xmit_was_error = process_xmt_interrupt(dev);
497 }
498
499 if ((status & IS_DMA_INT) == 0) {
500 PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name));
501 outb(0, IE_DMA_RST); /* Reset DMA int */
502 }
503
504 if (!xmit_was_error)
505 reset_receiver(dev);
506 spin_unlock(&lp->lock);
507 return IRQ_HANDLED;
508}
509
510
511static void dump_packet(void *buf, int len)
512{
513 int i;
514
515 printk(KERN_DEBUG "Packet length = %#4x\n", len);
516 for (i = 0; i < len; i++){
517 if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i);
518 if (i % 2 == 0) printk(" ");
519 printk("%2.2x", ((unsigned char *)buf)[i]);
520 if (i % 16 == 15) printk("\n");
521 }
522 printk("\n");
523
524 return;
525}
526
527/* We have a good packet, get it out of the buffer. */
528static void ni5010_rx(struct net_device *dev)
529{
530 struct ni5010_local *lp = netdev_priv(dev);
531 int ioaddr = dev->base_addr;
532 unsigned char rcv_stat;
533 struct sk_buff *skb;
534 int i_pkt_size;
535
536 PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
537
538 rcv_stat = inb(EDLC_RSTAT);
539 PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
540
541 if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
542 PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
543 lp->stats.rx_errors++;
544 if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++;
545 if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++;
546 if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++;
547 if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++;
548 outb(0xff, EDLC_RCLR); /* Clear the interrupt */
549 return;
550 }
551
552 outb(0xff, EDLC_RCLR); /* Clear the interrupt */
553
554 i_pkt_size = inw(IE_RCNT);
555 if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) {
556 PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
557 dev->name, i_pkt_size));
558 lp->stats.rx_errors++;
559 lp->stats.rx_length_errors++;
560 return;
561 }
562
563 /* Malloc up new buffer. */
564 skb = dev_alloc_skb(i_pkt_size + 3);
565 if (skb == NULL) {
566 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
567 lp->stats.rx_dropped++;
568 return;
569 }
570
571 skb->dev = dev;
572 skb_reserve(skb, 2);
573
574 /* Read packet into buffer */
575 outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */
576 outw(0, IE_GP); /* Seek to beginning of packet */
577 insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size);
578
579 if (NI5010_DEBUG >= 4)
580 dump_packet(skb->data, skb->len);
581
582 skb->protocol = eth_type_trans(skb,dev);
583 netif_rx(skb);
584 dev->last_rx = jiffies;
585 lp->stats.rx_packets++;
586 lp->stats.rx_bytes += i_pkt_size;
587
588 PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
589 dev->name, i_pkt_size));
590
591}
592
593static int process_xmt_interrupt(struct net_device *dev)
594{
595 struct ni5010_local *lp = netdev_priv(dev);
596 int ioaddr = dev->base_addr;
597 int xmit_stat;
598
599 PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
600
601 xmit_stat = inb(EDLC_XSTAT);
602 PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
603
604 outb(0, EDLC_XMASK); /* Disable xmit IRQ's */
605 outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */
606
607 if (xmit_stat & XS_COLL){
608 PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
609 dev->name));
610 outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
611 /* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */
612 outb(MM_EN_XMT | MM_MUX, IE_MMODE);
613 outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */
614 lp->stats.collisions++;
615 return 1;
616 }
617
618 /* FIXME: handle other xmt error conditions */
619
620 lp->stats.tx_packets++;
621 lp->stats.tx_bytes += lp->o_pkt_size;
622 netif_wake_queue(dev);
623
624 PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
625 dev->name, lp->o_pkt_size));
626
627 return 0;
628}
629
630/* The inverse routine to ni5010_open(). */
631static int ni5010_close(struct net_device *dev)
632{
633 int ioaddr = dev->base_addr;
634
635 PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
636#ifdef jumpered_interrupts
637 free_irq(dev->irq, NULL);
638#endif
639 /* Put card in held-RESET state */
640 outb(0, IE_MMODE);
641 outb(RS_RESET, EDLC_RESET);
642
643 netif_stop_queue(dev);
644
645 PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
646 return 0;
647
648}
649
650/* Get the current statistics. This may be called with the card open or
651 closed. */
652static struct net_device_stats *ni5010_get_stats(struct net_device *dev)
653{
654 struct ni5010_local *lp = netdev_priv(dev);
655
656 PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name));
657
658 if (NI5010_DEBUG) ni5010_show_registers(dev);
659
660 /* cli(); */
661 /* Update the statistics from the device registers. */
662 /* We do this in the interrupt handler */
663 /* sti(); */
664
665 return &lp->stats;
666}
667
668/* Set or clear the multicast filter for this adaptor.
669 num_addrs == -1 Promiscuous mode, receive all packets
670 num_addrs == 0 Normal mode, clear multicast list
671 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
672 best-effort filtering.
673*/
674static void ni5010_set_multicast_list(struct net_device *dev)
675{
676 short ioaddr = dev->base_addr;
677
678 PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
679
680 if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) {
681 dev->flags |= IFF_PROMISC;
682 outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
683 PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
684 } else if (dev->mc_list) {
685 /* Sorry, multicast not supported */
686 PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name));
687 outb(RMD_BROADCAST, EDLC_RMODE);
688 } else {
689 PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
690 outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */
691 }
692}
693
694static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad)
695{
696 struct ni5010_local *lp = netdev_priv(dev);
697 int ioaddr = dev->base_addr;
698 unsigned long flags;
699 unsigned int buf_offs;
700
701 PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
702
703 if (length > ETH_FRAME_LEN) {
704 PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
705 dev->name));
706 return;
707 }
708
709 if (NI5010_DEBUG) ni5010_show_registers(dev);
710
711 if (inb(IE_ISTAT) & IS_EN_XMT) {
712 PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
713 dev->name));
714 return;
715 }
716
717 if (NI5010_DEBUG > 3) dump_packet(buf, length);
718
719 buf_offs = NI5010_BUFSIZE - length - pad;
720
721 spin_lock_irqsave(&lp->lock, flags);
722 lp->o_pkt_size = length + pad;
723
724 outb(0, EDLC_RMASK); /* Mask all receive interrupts */
725 outb(0, IE_MMODE); /* Put Xmit buffer on system bus */
726 outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */
727
728 outw(buf_offs, IE_GP); /* Point GP at start of packet */
729 outsb(IE_XBUF, buf, length); /* Put data in buffer */
730 while(pad--)
731 outb(0, IE_XBUF);
732
733 outw(buf_offs, IE_GP); /* Rewrite where packet starts */
734
735 /* should work without that outb() (Crynwr used it) */
736 /*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
737 outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
738 outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
739
740 spin_unlock_irqrestore(&lp->lock, flags);
741
742 netif_wake_queue(dev);
743
744 if (NI5010_DEBUG) ni5010_show_registers(dev);
745}
746
747static void chipset_init(struct net_device *dev, int startp)
748{
749 /* FIXME: Move some stuff here */
750 PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
751}
752
753static void ni5010_show_registers(struct net_device *dev)
754{
755 int ioaddr = dev->base_addr;
756
757 PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
758 PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
759 PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
760 PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
761 PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
762 PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
763 PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
764}
765
766#ifdef MODULE
767static struct net_device *dev_ni5010;
768
769MODULE_PARM(io, "i");
770MODULE_PARM(irq, "i");
771MODULE_PARM_DESC(io, "ni5010 I/O base address");
772MODULE_PARM_DESC(irq, "ni5010 IRQ number");
773
774int init_module(void)
775{
776 PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
777 /*
778 if(io <= 0 || irq == 0){
779 printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
780 printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
781 return -EINVAL;
782 }
783 */
784 if (io <= 0){
785 printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
786 }
787
788 PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
789 dev_ni5010 = ni5010_probe(-1);
790 if (IS_ERR(dev_ni5010))
791 return PTR_ERR(dev_ni5010);
792 return 0;
793}
794
795void cleanup_module(void)
796{
797 PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
798 unregister_netdev(dev_ni5010);
799 release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT);
800 free_netdev(dev_ni5010);
801}
802#endif /* MODULE */
803MODULE_LICENSE("GPL");
804
805/*
806 * Local variables:
807 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c"
808 * version-control: t
809 * kept-new-versions: 5
810 * tab-width: 4
811 * End:
812 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 17:30:56 -0500