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49#include <linux/module.h>
50#include <linux/kernel.h>
51#include <linux/string.h>
52#include <linux/errno.h>
53#include <linux/ioport.h>
54#include <linux/slab.h>
55#include <linux/interrupt.h>
56#include <linux/delay.h>
57#include <linux/init.h>
58#include <linux/bitops.h>
59#include <asm/io.h>
60#include <asm/dma.h>
61
62#include <linux/netdevice.h>
63#include <linux/etherdevice.h>
64#include <linux/skbuff.h>
65
66#include "ni5010.h"
67
68static const char boardname[] = "NI5010";
69static char version[] __initdata =
70 "ni5010.c: v1.02 20060611 Jan-Pascal van Best and Andreas Mohr\n";
71
72
73static unsigned int bufsize_rcv;
74
75#define JUMPERED_INTERRUPTS
76#undef JUMPERED_DMA
77#undef FULL_IODETECT
78
79#ifndef FULL_IODETECT
80
81static unsigned int ports[] __initdata =
82 { 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 };
83#endif
84
85
86#ifndef NI5010_DEBUG
87#define NI5010_DEBUG 0
88#endif
89
90
91struct ni5010_local {
92 int o_pkt_size;
93 spinlock_t lock;
94};
95
96
97
98static int ni5010_probe1(struct net_device *dev, int ioaddr);
99static int ni5010_open(struct net_device *dev);
100static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
101static irqreturn_t ni5010_interrupt(int irq, void *dev_id);
102static void ni5010_rx(struct net_device *dev);
103static void ni5010_timeout(struct net_device *dev);
104static int ni5010_close(struct net_device *dev);
105static void ni5010_set_multicast_list(struct net_device *dev);
106static void reset_receiver(struct net_device *dev);
107
108static int process_xmt_interrupt(struct net_device *dev);
109#define tx_done(dev) 1
110static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad);
111static void chipset_init(struct net_device *dev, int startp);
112static void dump_packet(void *buf, int len);
113static void ni5010_show_registers(struct net_device *dev);
114
115static int io;
116static int irq;
117
118struct net_device * __init ni5010_probe(int unit)
119{
120 struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local));
121 int *port;
122 int err = 0;
123
124 if (!dev)
125 return ERR_PTR(-ENOMEM);
126
127 if (unit >= 0) {
128 sprintf(dev->name, "eth%d", unit);
129 netdev_boot_setup_check(dev);
130 io = dev->base_addr;
131 irq = dev->irq;
132 }
133
134 PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name));
135
136 if (io > 0x1ff) {
137 err = ni5010_probe1(dev, io);
138 } else if (io != 0) {
139 err = -ENXIO;
140 } else {
141#ifdef FULL_IODETECT
142 for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20)
143 ;
144 if (io == 0x400)
145 err = -ENODEV;
146
147#else
148 for (port = ports; *port && ni5010_probe1(dev, *port); port++)
149 ;
150 if (!*port)
151 err = -ENODEV;
152#endif
153 }
154 if (err)
155 goto out;
156 err = register_netdev(dev);
157 if (err)
158 goto out1;
159 return dev;
160out1:
161 release_region(dev->base_addr, NI5010_IO_EXTENT);
162out:
163 free_netdev(dev);
164 return ERR_PTR(err);
165}
166
167static inline int rd_port(int ioaddr)
168{
169 inb(IE_RBUF);
170 return inb(IE_SAPROM);
171}
172
173static void __init trigger_irq(int ioaddr)
174{
175 outb(0x00, EDLC_RESET);
176 outb(0x00, IE_RESET);
177 outb(0x00, EDLC_XMASK);
178 outb(0x00, EDLC_RMASK);
179 outb(0xff, EDLC_XCLR);
180 outb(0xff, EDLC_RCLR);
181
182
183
184
185 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
186 outb(RMD_BROADCAST, EDLC_RMODE);
187 outb(XM_ALL, EDLC_XMASK);
188 udelay(50);
189 outb(MM_EN_XMT|MM_MUX, IE_MMODE);
190}
191
192static const struct net_device_ops ni5010_netdev_ops = {
193 .ndo_open = ni5010_open,
194 .ndo_stop = ni5010_close,
195 .ndo_start_xmit = ni5010_send_packet,
196 .ndo_set_multicast_list = ni5010_set_multicast_list,
197 .ndo_tx_timeout = ni5010_timeout,
198 .ndo_validate_addr = eth_validate_addr,
199 .ndo_set_mac_address = eth_mac_addr,
200 .ndo_change_mtu = eth_change_mtu,
201};
202
203
204
205
206
207
208
209static int __init ni5010_probe1(struct net_device *dev, int ioaddr)
210{
211 static unsigned version_printed;
212 struct ni5010_local *lp;
213 int i;
214 unsigned int data = 0;
215 int boguscount = 40;
216 int err = -ENODEV;
217
218 dev->base_addr = ioaddr;
219 dev->irq = irq;
220
221 if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname))
222 return -EBUSY;
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238 PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n",
239 dev->name, ioaddr));
240
241 if (inb(ioaddr+0) == 0xff)
242 goto out;
243
244 while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) &
245 rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff)
246 {
247 if (boguscount-- == 0)
248 goto out;
249 }
250
251 PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name));
252
253 for (i=0; i<32; i++)
254 if ( (data = rd_port(ioaddr)) != 0xff) break;
255 if (data==0xff)
256 goto out;
257
258 PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name));
259
260 if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) ||
261 (rd_port(ioaddr) != SA_ADDR2))
262 goto out;
263
264 for (i=0; i<4; i++)
265 rd_port(ioaddr);
266
267 if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) ||
268 (rd_port(ioaddr) != NI5010_MAGICVAL2) )
269 goto out;
270
271 PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name));
272
273 if (NI5010_DEBUG && version_printed++ == 0)
274 printk(KERN_INFO "%s", version);
275
276 printk("NI5010 ethercard probe at 0x%x: ", ioaddr);
277
278 dev->base_addr = ioaddr;
279
280 for (i=0; i<6; i++) {
281 outw(i, IE_GP);
282 dev->dev_addr[i] = inb(IE_SAPROM);
283 }
284 printk("%pM ", dev->dev_addr);
285
286 PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name));
287
288#ifdef JUMPERED_INTERRUPTS
289 if (dev->irq == 0xff)
290 ;
291 else if (dev->irq < 2) {
292 unsigned long irq_mask;
293
294 PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name));
295
296 irq_mask = probe_irq_on();
297 trigger_irq(ioaddr);
298 mdelay(20);
299 dev->irq = probe_irq_off(irq_mask);
300
301 PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name));
302
303 if (dev->irq == 0) {
304 err = -EAGAIN;
305 printk(KERN_WARNING "%s: no IRQ found!\n", dev->name);
306 goto out;
307 }
308 PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name));
309 } else if (dev->irq == 2) {
310 dev->irq = 9;
311 }
312#endif
313 PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name));
314
315
316 lp = netdev_priv(dev);
317
318 spin_lock_init(&lp->lock);
319
320 PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name));
321
322
323
324
325
326 if (!bufsize_rcv) {
327 outb(1, IE_MMODE);
328 outw(0, IE_GP);
329 outb(0, IE_RBUF);
330 for (i = 1; i < 0xff; i++) {
331 outw(i << 8, IE_GP);
332 outb(i, IE_RBUF);
333 outw(0x0, IE_GP);
334 data = inb(IE_RBUF);
335 if (data == i) break;
336 }
337 bufsize_rcv = i << 8;
338 outw(0, IE_GP);
339 outb(0, IE_RBUF);
340 }
341 printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
342
343 dev->netdev_ops = &ni5010_netdev_ops;
344 dev->watchdog_timeo = HZ/20;
345
346 dev->flags &= ~IFF_MULTICAST;
347
348
349 outb(0, EDLC_RMASK);
350 outb(0, EDLC_XMASK);
351 outb(0xff, EDLC_RCLR);
352 outb(0xff, EDLC_XCLR);
353
354 printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq);
355 if (dev->dma)
356 printk(" & DMA %d", dev->dma);
357 printk(".\n");
358 return 0;
359out:
360 release_region(dev->base_addr, NI5010_IO_EXTENT);
361 return err;
362}
363
364
365
366
367
368
369
370
371
372
373static int ni5010_open(struct net_device *dev)
374{
375 int ioaddr = dev->base_addr;
376 int i;
377
378 PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name));
379
380 if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) {
381 printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq);
382 return -EAGAIN;
383 }
384 PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name));
385
386
387
388
389#ifdef JUMPERED_DMA
390 if (request_dma(dev->dma, cardname)) {
391 printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma);
392 free_irq(dev->irq, NULL);
393 return -EAGAIN;
394 }
395#endif
396
397 PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name));
398
399
400 outb(RS_RESET, EDLC_RESET);
401 outb(0, IE_RESET);
402 outb(XMD_LBC, EDLC_XMODE);
403
404 PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name));
405
406 for(i = 0;i < 6; i++) {
407 outb(dev->dev_addr[i], EDLC_ADDR + i);
408 }
409
410 PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name));
411 outb(0, EDLC_XMASK);
412 outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
413
414 outb(0xff, EDLC_XCLR);
415 outb(RMD_BROADCAST, EDLC_RMODE);
416
417 reset_receiver(dev);
418
419 outb(0, EDLC_RESET);
420
421 netif_start_queue(dev);
422
423 if (NI5010_DEBUG) ni5010_show_registers(dev);
424
425 PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
426 return 0;
427}
428
429static void reset_receiver(struct net_device *dev)
430{
431 int ioaddr = dev->base_addr;
432
433 PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name));
434 outw(0, IE_GP);
435 outb(0xff, EDLC_RCLR);
436 outb(0, IE_MMODE);
437 outb(MM_EN_RCV, IE_MMODE);
438 outb(0xff, EDLC_RMASK);
439}
440
441static void ni5010_timeout(struct net_device *dev)
442{
443 printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
444 tx_done(dev) ? "IRQ conflict" : "network cable problem");
445
446
447 chipset_init(dev, 1);
448 dev->trans_start = jiffies;
449 netif_wake_queue(dev);
450}
451
452static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev)
453{
454 int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
455
456 PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
457
458
459
460
461
462 netif_stop_queue(dev);
463 hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len);
464 dev->trans_start = jiffies;
465 dev_kfree_skb (skb);
466 return NETDEV_TX_OK;
467}
468
469
470
471
472
473static irqreturn_t ni5010_interrupt(int irq, void *dev_id)
474{
475 struct net_device *dev = dev_id;
476 struct ni5010_local *lp;
477 int ioaddr, status;
478 int xmit_was_error = 0;
479
480 PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
481
482 ioaddr = dev->base_addr;
483 lp = netdev_priv(dev);
484
485 spin_lock(&lp->lock);
486 status = inb(IE_ISTAT);
487 PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
488
489 if ((status & IS_R_INT) == 0) ni5010_rx(dev);
490
491 if ((status & IS_X_INT) == 0) {
492 xmit_was_error = process_xmt_interrupt(dev);
493 }
494
495 if ((status & IS_DMA_INT) == 0) {
496 PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name));
497 outb(0, IE_DMA_RST);
498 }
499
500 if (!xmit_was_error)
501 reset_receiver(dev);
502 spin_unlock(&lp->lock);
503 return IRQ_HANDLED;
504}
505
506
507static void dump_packet(void *buf, int len)
508{
509 int i;
510
511 printk(KERN_DEBUG "Packet length = %#4x\n", len);
512 for (i = 0; i < len; i++){
513 if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i);
514 if (i % 2 == 0) printk(" ");
515 printk("%2.2x", ((unsigned char *)buf)[i]);
516 if (i % 16 == 15) printk("\n");
517 }
518 printk("\n");
519
520 return;
521}
522
523
524static void ni5010_rx(struct net_device *dev)
525{
526 int ioaddr = dev->base_addr;
527 unsigned char rcv_stat;
528 struct sk_buff *skb;
529 int i_pkt_size;
530
531 PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
532
533 rcv_stat = inb(EDLC_RSTAT);
534 PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
535
536 if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
537 PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
538 dev->stats.rx_errors++;
539 if (rcv_stat & RS_RUNT) dev->stats.rx_length_errors++;
540 if (rcv_stat & RS_ALIGN) dev->stats.rx_frame_errors++;
541 if (rcv_stat & RS_CRC_ERR) dev->stats.rx_crc_errors++;
542 if (rcv_stat & RS_OFLW) dev->stats.rx_fifo_errors++;
543 outb(0xff, EDLC_RCLR);
544 return;
545 }
546
547 outb(0xff, EDLC_RCLR);
548
549 i_pkt_size = inw(IE_RCNT);
550 if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) {
551 PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
552 dev->name, i_pkt_size));
553 dev->stats.rx_errors++;
554 dev->stats.rx_length_errors++;
555 return;
556 }
557
558
559 skb = dev_alloc_skb(i_pkt_size + 3);
560 if (skb == NULL) {
561 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
562 dev->stats.rx_dropped++;
563 return;
564 }
565
566 skb_reserve(skb, 2);
567
568
569 outb(MM_MUX, IE_MMODE);
570 outw(0, IE_GP);
571 insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size);
572
573 if (NI5010_DEBUG >= 4)
574 dump_packet(skb->data, skb->len);
575
576 skb->protocol = eth_type_trans(skb,dev);
577 netif_rx(skb);
578 dev->stats.rx_packets++;
579 dev->stats.rx_bytes += i_pkt_size;
580
581 PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
582 dev->name, i_pkt_size));
583}
584
585static int process_xmt_interrupt(struct net_device *dev)
586{
587 struct ni5010_local *lp = netdev_priv(dev);
588 int ioaddr = dev->base_addr;
589 int xmit_stat;
590
591 PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
592
593 xmit_stat = inb(EDLC_XSTAT);
594 PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
595
596 outb(0, EDLC_XMASK);
597 outb(0xff, EDLC_XCLR);
598
599 if (xmit_stat & XS_COLL){
600 PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
601 dev->name));
602 outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
603
604 outb(MM_EN_XMT | MM_MUX, IE_MMODE);
605 outb(XM_ALL, EDLC_XMASK);
606 dev->stats.collisions++;
607 return 1;
608 }
609
610
611
612 dev->stats.tx_packets++;
613 dev->stats.tx_bytes += lp->o_pkt_size;
614 netif_wake_queue(dev);
615
616 PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
617 dev->name, lp->o_pkt_size));
618
619 return 0;
620}
621
622
623static int ni5010_close(struct net_device *dev)
624{
625 int ioaddr = dev->base_addr;
626
627 PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
628#ifdef JUMPERED_INTERRUPTS
629 free_irq(dev->irq, NULL);
630#endif
631
632 outb(0, IE_MMODE);
633 outb(RS_RESET, EDLC_RESET);
634
635 netif_stop_queue(dev);
636
637 PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
638 return 0;
639
640}
641
642
643
644
645
646
647
648static void ni5010_set_multicast_list(struct net_device *dev)
649{
650 short ioaddr = dev->base_addr;
651
652 PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
653
654 if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI || dev->mc_list) {
655 outb(RMD_PROMISC, EDLC_RMODE);
656 PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
657 } else {
658 PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
659 outb(RMD_BROADCAST, EDLC_RMODE);
660 }
661}
662
663static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad)
664{
665 struct ni5010_local *lp = netdev_priv(dev);
666 int ioaddr = dev->base_addr;
667 unsigned long flags;
668 unsigned int buf_offs;
669
670 PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
671
672 if (length > ETH_FRAME_LEN) {
673 PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
674 dev->name));
675 return;
676 }
677
678 if (NI5010_DEBUG) ni5010_show_registers(dev);
679
680 if (inb(IE_ISTAT) & IS_EN_XMT) {
681 PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
682 dev->name));
683 return;
684 }
685
686 if (NI5010_DEBUG > 3) dump_packet(buf, length);
687
688 buf_offs = NI5010_BUFSIZE - length - pad;
689
690 spin_lock_irqsave(&lp->lock, flags);
691 lp->o_pkt_size = length + pad;
692
693 outb(0, EDLC_RMASK);
694 outb(0, IE_MMODE);
695 outb(0xff, EDLC_RCLR);
696
697 outw(buf_offs, IE_GP);
698 outsb(IE_XBUF, buf, length);
699 while(pad--)
700 outb(0, IE_XBUF);
701
702 outw(buf_offs, IE_GP);
703
704
705
706 outb(MM_EN_XMT | MM_MUX, IE_MMODE);
707 outb(XM_ALL, EDLC_XMASK);
708
709 spin_unlock_irqrestore(&lp->lock, flags);
710
711 netif_wake_queue(dev);
712
713 if (NI5010_DEBUG) ni5010_show_registers(dev);
714}
715
716static void chipset_init(struct net_device *dev, int startp)
717{
718
719 PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
720}
721
722static void ni5010_show_registers(struct net_device *dev)
723{
724 int ioaddr = dev->base_addr;
725
726 PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
727 PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
728 PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
729 PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
730 PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
731 PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
732 PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
733}
734
735#ifdef MODULE
736static struct net_device *dev_ni5010;
737
738module_param(io, int, 0);
739module_param(irq, int, 0);
740MODULE_PARM_DESC(io, "ni5010 I/O base address");
741MODULE_PARM_DESC(irq, "ni5010 IRQ number");
742
743static int __init ni5010_init_module(void)
744{
745 PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
746
747
748
749
750
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 = ni5010_probe(-1);
759 if (IS_ERR(dev_ni5010))
760 return PTR_ERR(dev_ni5010);
761 return 0;
762}
763
764static void __exit ni5010_cleanup_module(void)
765{
766 PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
767 unregister_netdev(dev_ni5010);
768 release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT);
769 free_netdev(dev_ni5010);
770}
771module_init(ni5010_init_module);
772module_exit(ni5010_cleanup_module);
773#endif
774MODULE_LICENSE("GPL");
775