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1/* sbni.c: Granch SBNI12 leased line adapters driver for linux
2 *
3 * Written 2001 by Denis I.Timofeev (timofeev@granch.ru)
4 *
5 * Previous versions were written by Yaroslav Polyakov,
6 * Alexey Zverev and Max Khon.
7 *
8 * Driver supports SBNI12-02,-04,-05,-10,-11 cards, single and
9 * double-channel, PCI and ISA modifications.
10 * More info and useful utilities to work with SBNI12 cards you can find
11 * at http://www.granch.com (English) or http://www.granch.ru (Russian)
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License.
15 *
16 *
17 * 5.0.1 Jun 22 2001
18 * - Fixed bug in probe
19 * 5.0.0 Jun 06 2001
20 * - Driver was completely redesigned by Denis I.Timofeev,
21 * - now PCI/Dual, ISA/Dual (with single interrupt line) models are
22 * - supported
23 * 3.3.0 Thu Feb 24 21:30:28 NOVT 2000
24 * - PCI cards support
25 * 3.2.0 Mon Dec 13 22:26:53 NOVT 1999
26 * - Completely rebuilt all the packet storage system
27 * - to work in Ethernet-like style.
28 * 3.1.1 just fixed some bugs (5 aug 1999)
29 * 3.1.0 added balancing feature (26 apr 1999)
30 * 3.0.1 just fixed some bugs (14 apr 1999).
31 * 3.0.0 Initial Revision, Yaroslav Polyakov (24 Feb 1999)
32 * - added pre-calculation for CRC, fixed bug with "len-2" frames,
33 * - removed outbound fragmentation (MTU=1000), written CRC-calculation
34 * - on asm, added work with hard_headers and now we have our own cache
35 * - for them, optionally supported word-interchange on some chipsets,
36 *
37 * Known problem: this driver wasn't tested on multiprocessor machine.
38 */
39
40#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
41
42#include <linux/module.h>
43#include <linux/kernel.h>
44#include <linux/ptrace.h>
45#include <linux/fcntl.h>
46#include <linux/ioport.h>
47#include <linux/interrupt.h>
48#include <linux/string.h>
49#include <linux/errno.h>
50#include <linux/netdevice.h>
51#include <linux/etherdevice.h>
52#include <linux/pci.h>
53#include <linux/skbuff.h>
54#include <linux/timer.h>
55#include <linux/init.h>
56#include <linux/delay.h>
57
58#include <net/net_namespace.h>
59#include <net/arp.h>
60#include <net/Space.h>
61
62#include <asm/io.h>
63#include <asm/types.h>
64#include <asm/byteorder.h>
65#include <asm/irq.h>
66#include <linux/uaccess.h>
67
68#include "sbni.h"
69
70/* device private data */
71
72struct net_local {
73 struct timer_list watchdog;
74 struct net_device *watchdog_dev;
75
76 spinlock_t lock;
77 struct sk_buff *rx_buf_p; /* receive buffer ptr */
78 struct sk_buff *tx_buf_p; /* transmit buffer ptr */
79
80 unsigned int framelen; /* current frame length */
81 unsigned int maxframe; /* maximum valid frame length */
82 unsigned int state;
83 unsigned int inppos, outpos; /* positions in rx/tx buffers */
84
85 /* transmitting frame number - from frames qty to 1 */
86 unsigned int tx_frameno;
87
88 /* expected number of next receiving frame */
89 unsigned int wait_frameno;
90
91 /* count of failed attempts to frame send - 32 attempts do before
92 error - while receiver tunes on opposite side of wire */
93 unsigned int trans_errors;
94
95 /* idle time; send pong when limit exceeded */
96 unsigned int timer_ticks;
97
98 /* fields used for receive level autoselection */
99 int delta_rxl;
100 unsigned int cur_rxl_index, timeout_rxl;
101 unsigned long cur_rxl_rcvd, prev_rxl_rcvd;
102
103 struct sbni_csr1 csr1; /* current value of CSR1 */
104 struct sbni_in_stats in_stats; /* internal statistics */
105
106 struct net_device *second; /* for ISA/dual cards */
107
108#ifdef CONFIG_SBNI_MULTILINE
109 struct net_device *master;
110 struct net_device *link;
111#endif
112};
113
114
115static int sbni_card_probe( unsigned long );
116static int sbni_pci_probe( struct net_device * );
117static struct net_device *sbni_probe1(struct net_device *, unsigned long, int);
118static int sbni_open( struct net_device * );
119static int sbni_close( struct net_device * );
120static netdev_tx_t sbni_start_xmit(struct sk_buff *,
121 struct net_device * );
122static int sbni_ioctl( struct net_device *, struct ifreq *, int );
123static void set_multicast_list( struct net_device * );
124
125static irqreturn_t sbni_interrupt( int, void * );
126static void handle_channel( struct net_device * );
127static int recv_frame( struct net_device * );
128static void send_frame( struct net_device * );
129static int upload_data( struct net_device *,
130 unsigned, unsigned, unsigned, u32 );
131static void download_data( struct net_device *, u32 * );
132static void sbni_watchdog(struct timer_list *);
133static void interpret_ack( struct net_device *, unsigned );
134static int append_frame_to_pkt( struct net_device *, unsigned, u32 );
135static void indicate_pkt( struct net_device * );
136static void card_start( struct net_device * );
137static void prepare_to_send( struct sk_buff *, struct net_device * );
138static void drop_xmit_queue( struct net_device * );
139static void send_frame_header( struct net_device *, u32 * );
140static int skip_tail( unsigned int, unsigned int, u32 );
141static int check_fhdr( u32, u32 *, u32 *, u32 *, u32 *, u32 * );
142static void change_level( struct net_device * );
143static void timeout_change_level( struct net_device * );
144static u32 calc_crc32( u32, u8 *, u32 );
145static struct sk_buff * get_rx_buf( struct net_device * );
146static int sbni_init( struct net_device * );
147
148#ifdef CONFIG_SBNI_MULTILINE
149static int enslave( struct net_device *, struct net_device * );
150static int emancipate( struct net_device * );
151#endif
152
153static const char version[] =
154 "Granch SBNI12 driver ver 5.0.1 Jun 22 2001 Denis I.Timofeev.\n";
155
156static bool skip_pci_probe __initdata = false;
157static int scandone __initdata = 0;
158static int num __initdata = 0;
159
160static unsigned char rxl_tab[];
161static u32 crc32tab[];
162
163/* A list of all installed devices, for removing the driver module. */
164static struct net_device *sbni_cards[ SBNI_MAX_NUM_CARDS ];
165
166/* Lists of device's parameters */
167static u32 io[ SBNI_MAX_NUM_CARDS ] __initdata =
168 { [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
169static u32 irq[ SBNI_MAX_NUM_CARDS ] __initdata;
170static u32 baud[ SBNI_MAX_NUM_CARDS ] __initdata;
171static u32 rxl[ SBNI_MAX_NUM_CARDS ] __initdata =
172 { [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
173static u32 mac[ SBNI_MAX_NUM_CARDS ] __initdata;
174
175#ifndef MODULE
176typedef u32 iarr[];
177static iarr *dest[5] __initdata = { &io, &irq, &baud, &rxl, &mac };
178#endif
179
180/* A zero-terminated list of I/O addresses to be probed on ISA bus */
181static unsigned int netcard_portlist[ ] __initdata = {
182 0x210, 0x214, 0x220, 0x224, 0x230, 0x234, 0x240, 0x244, 0x250, 0x254,
183 0x260, 0x264, 0x270, 0x274, 0x280, 0x284, 0x290, 0x294, 0x2a0, 0x2a4,
184 0x2b0, 0x2b4, 0x2c0, 0x2c4, 0x2d0, 0x2d4, 0x2e0, 0x2e4, 0x2f0, 0x2f4,
185 0 };
186
187#define NET_LOCAL_LOCK(dev) (((struct net_local *)netdev_priv(dev))->lock)
188
189/*
190 * Look for SBNI card which addr stored in dev->base_addr, if nonzero.
191 * Otherwise, look through PCI bus. If none PCI-card was found, scan ISA.
192 */
193
194static inline int __init
195sbni_isa_probe( struct net_device *dev )
196{
197 if( dev->base_addr > 0x1ff &&
198 request_region( dev->base_addr, SBNI_IO_EXTENT, dev->name ) &&
199 sbni_probe1( dev, dev->base_addr, dev->irq ) )
200
201 return 0;
202 else {
203 pr_err("base address 0x%lx is busy, or adapter is malfunctional!\n",
204 dev->base_addr);
205 return -ENODEV;
206 }
207}
208
209static const struct net_device_ops sbni_netdev_ops = {
210 .ndo_open = sbni_open,
211 .ndo_stop = sbni_close,
212 .ndo_start_xmit = sbni_start_xmit,
213 .ndo_set_rx_mode = set_multicast_list,
214 .ndo_do_ioctl = sbni_ioctl,
215 .ndo_set_mac_address = eth_mac_addr,
216 .ndo_validate_addr = eth_validate_addr,
217};
218
219static void __init sbni_devsetup(struct net_device *dev)
220{
221 ether_setup( dev );
222 dev->netdev_ops = &sbni_netdev_ops;
223}
224
225int __init sbni_probe(int unit)
226{
227 struct net_device *dev;
228 int err;
229
230 dev = alloc_netdev(sizeof(struct net_local), "sbni",
231 NET_NAME_UNKNOWN, sbni_devsetup);
232 if (!dev)
233 return -ENOMEM;
234
235 dev->netdev_ops = &sbni_netdev_ops;
236
237 sprintf(dev->name, "sbni%d", unit);
238 netdev_boot_setup_check(dev);
239
240 err = sbni_init(dev);
241 if (err) {
242 free_netdev(dev);
243 return err;
244 }
245
246 err = register_netdev(dev);
247 if (err) {
248 release_region( dev->base_addr, SBNI_IO_EXTENT );
249 free_netdev(dev);
250 return err;
251 }
252 pr_info_once("%s", version);
253 return 0;
254}
255
256static int __init sbni_init(struct net_device *dev)
257{
258 int i;
259 if( dev->base_addr )
260 return sbni_isa_probe( dev );
261 /* otherwise we have to perform search our adapter */
262
263 if( io[ num ] != -1 )
264 dev->base_addr = io[ num ],
265 dev->irq = irq[ num ];
266 else if( scandone || io[ 0 ] != -1 )
267 return -ENODEV;
268
269 /* if io[ num ] contains non-zero address, then that is on ISA bus */
270 if( dev->base_addr )
271 return sbni_isa_probe( dev );
272
273 /* ...otherwise - scan PCI first */
274 if( !skip_pci_probe && !sbni_pci_probe( dev ) )
275 return 0;
276
277 if( io[ num ] == -1 ) {
278 /* Auto-scan will be stopped when first ISA card were found */
279 scandone = 1;
280 if( num > 0 )
281 return -ENODEV;
282 }
283
284 for( i = 0; netcard_portlist[ i ]; ++i ) {
285 int ioaddr = netcard_portlist[ i ];
286 if( request_region( ioaddr, SBNI_IO_EXTENT, dev->name ) &&
287 sbni_probe1( dev, ioaddr, 0 ))
288 return 0;
289 }
290
291 return -ENODEV;
292}
293
294
295static int __init
296sbni_pci_probe( struct net_device *dev )
297{
298 struct pci_dev *pdev = NULL;
299
300 while( (pdev = pci_get_class( PCI_CLASS_NETWORK_OTHER << 8, pdev ))
301 != NULL ) {
302 int pci_irq_line;
303 unsigned long pci_ioaddr;
304
305 if( pdev->vendor != SBNI_PCI_VENDOR &&
306 pdev->device != SBNI_PCI_DEVICE )
307 continue;
308
309 pci_ioaddr = pci_resource_start( pdev, 0 );
310 pci_irq_line = pdev->irq;
311
312 /* Avoid already found cards from previous calls */
313 if( !request_region( pci_ioaddr, SBNI_IO_EXTENT, dev->name ) ) {
314 if (pdev->subsystem_device != 2)
315 continue;
316
317 /* Dual adapter is present */
318 if (!request_region(pci_ioaddr += 4, SBNI_IO_EXTENT,
319 dev->name ) )
320 continue;
321 }
322
323 if (pci_irq_line <= 0 || pci_irq_line >= nr_irqs)
324 pr_warn(
325"WARNING: The PCI BIOS assigned this PCI card to IRQ %d, which is unlikely to work!.\n"
326"You should use the PCI BIOS setup to assign a valid IRQ line.\n",
327 pci_irq_line );
328
329 /* avoiding re-enable dual adapters */
330 if( (pci_ioaddr & 7) == 0 && pci_enable_device( pdev ) ) {
331 release_region( pci_ioaddr, SBNI_IO_EXTENT );
332 pci_dev_put( pdev );
333 return -EIO;
334 }
335 if( sbni_probe1( dev, pci_ioaddr, pci_irq_line ) ) {
336 SET_NETDEV_DEV(dev, &pdev->dev);
337 /* not the best thing to do, but this is all messed up
338 for hotplug systems anyway... */
339 pci_dev_put( pdev );
340 return 0;
341 }
342 }
343 return -ENODEV;
344}
345
346
347static struct net_device * __init
348sbni_probe1( struct net_device *dev, unsigned long ioaddr, int irq )
349{
350 struct net_local *nl;
351
352 if( sbni_card_probe( ioaddr ) ) {
353 release_region( ioaddr, SBNI_IO_EXTENT );
354 return NULL;
355 }
356
357 outb( 0, ioaddr + CSR0 );
358
359 if( irq < 2 ) {
360 unsigned long irq_mask;
361
362 irq_mask = probe_irq_on();
363 outb( EN_INT | TR_REQ, ioaddr + CSR0 );
364 outb( PR_RES, ioaddr + CSR1 );
365 mdelay(50);
366 irq = probe_irq_off(irq_mask);
367 outb( 0, ioaddr + CSR0 );
368
369 if( !irq ) {
370 pr_err("%s: can't detect device irq!\n", dev->name);
371 release_region( ioaddr, SBNI_IO_EXTENT );
372 return NULL;
373 }
374 } else if( irq == 2 )
375 irq = 9;
376
377 dev->irq = irq;
378 dev->base_addr = ioaddr;
379
380 /* Fill in sbni-specific dev fields. */
381 nl = netdev_priv(dev);
382 if( !nl ) {
383 pr_err("%s: unable to get memory!\n", dev->name);
384 release_region( ioaddr, SBNI_IO_EXTENT );
385 return NULL;
386 }
387
388 memset( nl, 0, sizeof(struct net_local) );
389 spin_lock_init( &nl->lock );
390
391 /* store MAC address (generate if that isn't known) */
392 *(__be16 *)dev->dev_addr = htons( 0x00ff );
393 *(__be32 *)(dev->dev_addr + 2) = htonl( 0x01000000 |
394 ((mac[num] ?
395 mac[num] :
396 (u32)((long)netdev_priv(dev))) & 0x00ffffff));
397
398 /* store link settings (speed, receive level ) */
399 nl->maxframe = DEFAULT_FRAME_LEN;
400 nl->csr1.rate = baud[ num ];
401
402 if( (nl->cur_rxl_index = rxl[ num ]) == -1 )
403 /* autotune rxl */
404 nl->cur_rxl_index = DEF_RXL,
405 nl->delta_rxl = DEF_RXL_DELTA;
406 else
407 nl->delta_rxl = 0;
408 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
409 if( inb( ioaddr + CSR0 ) & 0x01 )
410 nl->state |= FL_SLOW_MODE;
411
412 pr_notice("%s: ioaddr %#lx, irq %d, MAC: 00:ff:01:%02x:%02x:%02x\n",
413 dev->name, dev->base_addr, dev->irq,
414 ((u8 *)dev->dev_addr)[3],
415 ((u8 *)dev->dev_addr)[4],
416 ((u8 *)dev->dev_addr)[5]);
417
418 pr_notice("%s: speed %d",
419 dev->name,
420 ((nl->state & FL_SLOW_MODE) ? 500000 : 2000000)
421 / (1 << nl->csr1.rate));
422
423 if( nl->delta_rxl == 0 )
424 pr_cont(", receive level 0x%x (fixed)\n", nl->cur_rxl_index);
425 else
426 pr_cont(", receive level (auto)\n");
427
428#ifdef CONFIG_SBNI_MULTILINE
429 nl->master = dev;
430 nl->link = NULL;
431#endif
432
433 sbni_cards[ num++ ] = dev;
434 return dev;
435}
436
437/* -------------------------------------------------------------------------- */
438
439#ifdef CONFIG_SBNI_MULTILINE
440
441static netdev_tx_t
442sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
443{
444 struct net_device *p;
445
446 netif_stop_queue( dev );
447
448 /* Looking for idle device in the list */
449 for( p = dev; p; ) {
450 struct net_local *nl = netdev_priv(p);
451 spin_lock( &nl->lock );
452 if( nl->tx_buf_p || (nl->state & FL_LINE_DOWN) ) {
453 p = nl->link;
454 spin_unlock( &nl->lock );
455 } else {
456 /* Idle dev is found */
457 prepare_to_send( skb, p );
458 spin_unlock( &nl->lock );
459 netif_start_queue( dev );
460 return NETDEV_TX_OK;
461 }
462 }
463
464 return NETDEV_TX_BUSY;
465}
466
467#else /* CONFIG_SBNI_MULTILINE */
468
469static netdev_tx_t
470sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
471{
472 struct net_local *nl = netdev_priv(dev);
473
474 netif_stop_queue( dev );
475 spin_lock( &nl->lock );
476
477 prepare_to_send( skb, dev );
478
479 spin_unlock( &nl->lock );
480 return NETDEV_TX_OK;
481}
482
483#endif /* CONFIG_SBNI_MULTILINE */
484
485/* -------------------------------------------------------------------------- */
486
487/* interrupt handler */
488
489/*
490 * SBNI12D-10, -11/ISA boards within "common interrupt" mode could not
491 * be looked as two independent single-channel devices. Every channel seems
492 * as Ethernet interface but interrupt handler must be common. Really, first
493 * channel ("master") driver only registers the handler. In its struct net_local
494 * it has got pointer to "slave" channel's struct net_local and handles that's
495 * interrupts too.
496 * dev of successfully attached ISA SBNI boards is linked to list.
497 * While next board driver is initialized, it scans this list. If one
498 * has found dev with same irq and ioaddr different by 4 then it assumes
499 * this board to be "master".
500 */
501
502static irqreturn_t
503sbni_interrupt( int irq, void *dev_id )
504{
505 struct net_device *dev = dev_id;
506 struct net_local *nl = netdev_priv(dev);
507 int repeat;
508
509 spin_lock( &nl->lock );
510 if( nl->second )
511 spin_lock(&NET_LOCAL_LOCK(nl->second));
512
513 do {
514 repeat = 0;
515 if( inb( dev->base_addr + CSR0 ) & (RC_RDY | TR_RDY) )
516 handle_channel( dev ),
517 repeat = 1;
518 if( nl->second && /* second channel present */
519 (inb( nl->second->base_addr+CSR0 ) & (RC_RDY | TR_RDY)) )
520 handle_channel( nl->second ),
521 repeat = 1;
522 } while( repeat );
523
524 if( nl->second )
525 spin_unlock(&NET_LOCAL_LOCK(nl->second));
526 spin_unlock( &nl->lock );
527 return IRQ_HANDLED;
528}
529
530
531static void
532handle_channel( struct net_device *dev )
533{
534 struct net_local *nl = netdev_priv(dev);
535 unsigned long ioaddr = dev->base_addr;
536
537 int req_ans;
538 unsigned char csr0;
539
540#ifdef CONFIG_SBNI_MULTILINE
541 /* Lock the master device because we going to change its local data */
542 if( nl->state & FL_SLAVE )
543 spin_lock(&NET_LOCAL_LOCK(nl->master));
544#endif
545
546 outb( (inb( ioaddr + CSR0 ) & ~EN_INT) | TR_REQ, ioaddr + CSR0 );
547
548 nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
549 for(;;) {
550 csr0 = inb( ioaddr + CSR0 );
551 if( ( csr0 & (RC_RDY | TR_RDY) ) == 0 )
552 break;
553
554 req_ans = !(nl->state & FL_PREV_OK);
555
556 if( csr0 & RC_RDY )
557 req_ans = recv_frame( dev );
558
559 /*
560 * TR_RDY always equals 1 here because we have owned the marker,
561 * and we set TR_REQ when disabled interrupts
562 */
563 csr0 = inb( ioaddr + CSR0 );
564 if( !(csr0 & TR_RDY) || (csr0 & RC_RDY) )
565 netdev_err(dev, "internal error!\n");
566
567 /* if state & FL_NEED_RESEND != 0 then tx_frameno != 0 */
568 if( req_ans || nl->tx_frameno != 0 )
569 send_frame( dev );
570 else
571 /* send marker without any data */
572 outb( inb( ioaddr + CSR0 ) & ~TR_REQ, ioaddr + CSR0 );
573 }
574
575 outb( inb( ioaddr + CSR0 ) | EN_INT, ioaddr + CSR0 );
576
577#ifdef CONFIG_SBNI_MULTILINE
578 if( nl->state & FL_SLAVE )
579 spin_unlock(&NET_LOCAL_LOCK(nl->master));
580#endif
581}
582
583
584/*
585 * Routine returns 1 if it needs to acknowledge received frame.
586 * Empty frame received without errors won't be acknowledged.
587 */
588
589static int
590recv_frame( struct net_device *dev )
591{
592 struct net_local *nl = netdev_priv(dev);
593 unsigned long ioaddr = dev->base_addr;
594
595 u32 crc = CRC32_INITIAL;
596
597 unsigned framelen = 0, frameno, ack;
598 unsigned is_first, frame_ok = 0;
599
600 if( check_fhdr( ioaddr, &framelen, &frameno, &ack, &is_first, &crc ) ) {
601 frame_ok = framelen > 4
602 ? upload_data( dev, framelen, frameno, is_first, crc )
603 : skip_tail( ioaddr, framelen, crc );
604 if( frame_ok )
605 interpret_ack( dev, ack );
606 }
607
608 outb( inb( ioaddr + CSR0 ) ^ CT_ZER, ioaddr + CSR0 );
609 if( frame_ok ) {
610 nl->state |= FL_PREV_OK;
611 if( framelen > 4 )
612 nl->in_stats.all_rx_number++;
613 } else
614 nl->state &= ~FL_PREV_OK,
615 change_level( dev ),
616 nl->in_stats.all_rx_number++,
617 nl->in_stats.bad_rx_number++;
618
619 return !frame_ok || framelen > 4;
620}
621
622
623static void
624send_frame( struct net_device *dev )
625{
626 struct net_local *nl = netdev_priv(dev);
627
628 u32 crc = CRC32_INITIAL;
629
630 if( nl->state & FL_NEED_RESEND ) {
631
632 /* if frame was sended but not ACK'ed - resend it */
633 if( nl->trans_errors ) {
634 --nl->trans_errors;
635 if( nl->framelen != 0 )
636 nl->in_stats.resend_tx_number++;
637 } else {
638 /* cannot xmit with many attempts */
639#ifdef CONFIG_SBNI_MULTILINE
640 if( (nl->state & FL_SLAVE) || nl->link )
641#endif
642 nl->state |= FL_LINE_DOWN;
643 drop_xmit_queue( dev );
644 goto do_send;
645 }
646 } else
647 nl->trans_errors = TR_ERROR_COUNT;
648
649 send_frame_header( dev, &crc );
650 nl->state |= FL_NEED_RESEND;
651 /*
652 * FL_NEED_RESEND will be cleared after ACK, but if empty
653 * frame sended then in prepare_to_send next frame
654 */
655
656
657 if( nl->framelen ) {
658 download_data( dev, &crc );
659 nl->in_stats.all_tx_number++;
660 nl->state |= FL_WAIT_ACK;
661 }
662
663 outsb( dev->base_addr + DAT, (u8 *)&crc, sizeof crc );
664
665do_send:
666 outb( inb( dev->base_addr + CSR0 ) & ~TR_REQ, dev->base_addr + CSR0 );
667
668 if( nl->tx_frameno )
669 /* next frame exists - we request card to send it */
670 outb( inb( dev->base_addr + CSR0 ) | TR_REQ,
671 dev->base_addr + CSR0 );
672}
673
674
675/*
676 * Write the frame data into adapter's buffer memory, and calculate CRC.
677 * Do padding if necessary.
678 */
679
680static void
681download_data( struct net_device *dev, u32 *crc_p )
682{
683 struct net_local *nl = netdev_priv(dev);
684 struct sk_buff *skb = nl->tx_buf_p;
685
686 unsigned len = min_t(unsigned int, skb->len - nl->outpos, nl->framelen);
687
688 outsb( dev->base_addr + DAT, skb->data + nl->outpos, len );
689 *crc_p = calc_crc32( *crc_p, skb->data + nl->outpos, len );
690
691 /* if packet too short we should write some more bytes to pad */
692 for( len = nl->framelen - len; len--; )
693 outb( 0, dev->base_addr + DAT ),
694 *crc_p = CRC32( 0, *crc_p );
695}
696
697
698static int
699upload_data( struct net_device *dev, unsigned framelen, unsigned frameno,
700 unsigned is_first, u32 crc )
701{
702 struct net_local *nl = netdev_priv(dev);
703
704 int frame_ok;
705
706 if( is_first )
707 nl->wait_frameno = frameno,
708 nl->inppos = 0;
709
710 if( nl->wait_frameno == frameno ) {
711
712 if( nl->inppos + framelen <= ETHER_MAX_LEN )
713 frame_ok = append_frame_to_pkt( dev, framelen, crc );
714
715 /*
716 * if CRC is right but framelen incorrect then transmitter
717 * error was occurred... drop entire packet
718 */
719 else if( (frame_ok = skip_tail( dev->base_addr, framelen, crc ))
720 != 0 )
721 nl->wait_frameno = 0,
722 nl->inppos = 0,
723#ifdef CONFIG_SBNI_MULTILINE
724 nl->master->stats.rx_errors++,
725 nl->master->stats.rx_missed_errors++;
726#else
727 dev->stats.rx_errors++,
728 dev->stats.rx_missed_errors++;
729#endif
730 /* now skip all frames until is_first != 0 */
731 } else
732 frame_ok = skip_tail( dev->base_addr, framelen, crc );
733
734 if( is_first && !frame_ok )
735 /*
736 * Frame has been broken, but we had already stored
737 * is_first... Drop entire packet.
738 */
739 nl->wait_frameno = 0,
740#ifdef CONFIG_SBNI_MULTILINE
741 nl->master->stats.rx_errors++,
742 nl->master->stats.rx_crc_errors++;
743#else
744 dev->stats.rx_errors++,
745 dev->stats.rx_crc_errors++;
746#endif
747
748 return frame_ok;
749}
750
751
752static inline void
753send_complete( struct net_device *dev )
754{
755 struct net_local *nl = netdev_priv(dev);
756
757#ifdef CONFIG_SBNI_MULTILINE
758 nl->master->stats.tx_packets++;
759 nl->master->stats.tx_bytes += nl->tx_buf_p->len;
760#else
761 dev->stats.tx_packets++;
762 dev->stats.tx_bytes += nl->tx_buf_p->len;
763#endif
764 dev_kfree_skb_irq( nl->tx_buf_p );
765
766 nl->tx_buf_p = NULL;
767
768 nl->outpos = 0;
769 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
770 nl->framelen = 0;
771}
772
773
774static void
775interpret_ack( struct net_device *dev, unsigned ack )
776{
777 struct net_local *nl = netdev_priv(dev);
778
779 if( ack == FRAME_SENT_OK ) {
780 nl->state &= ~FL_NEED_RESEND;
781
782 if( nl->state & FL_WAIT_ACK ) {
783 nl->outpos += nl->framelen;
784
785 if( --nl->tx_frameno )
786 nl->framelen = min_t(unsigned int,
787 nl->maxframe,
788 nl->tx_buf_p->len - nl->outpos);
789 else
790 send_complete( dev ),
791#ifdef CONFIG_SBNI_MULTILINE
792 netif_wake_queue( nl->master );
793#else
794 netif_wake_queue( dev );
795#endif
796 }
797 }
798
799 nl->state &= ~FL_WAIT_ACK;
800}
801
802
803/*
804 * Glue received frame with previous fragments of packet.
805 * Indicate packet when last frame would be accepted.
806 */
807
808static int
809append_frame_to_pkt( struct net_device *dev, unsigned framelen, u32 crc )
810{
811 struct net_local *nl = netdev_priv(dev);
812
813 u8 *p;
814
815 if( nl->inppos + framelen > ETHER_MAX_LEN )
816 return 0;
817
818 if( !nl->rx_buf_p && !(nl->rx_buf_p = get_rx_buf( dev )) )
819 return 0;
820
821 p = nl->rx_buf_p->data + nl->inppos;
822 insb( dev->base_addr + DAT, p, framelen );
823 if( calc_crc32( crc, p, framelen ) != CRC32_REMAINDER )
824 return 0;
825
826 nl->inppos += framelen - 4;
827 if( --nl->wait_frameno == 0 ) /* last frame received */
828 indicate_pkt( dev );
829
830 return 1;
831}
832
833
834/*
835 * Prepare to start output on adapter.
836 * Transmitter will be actually activated when marker is accepted.
837 */
838
839static void
840prepare_to_send( struct sk_buff *skb, struct net_device *dev )
841{
842 struct net_local *nl = netdev_priv(dev);
843
844 unsigned int len;
845
846 /* nl->tx_buf_p == NULL here! */
847 if( nl->tx_buf_p )
848 netdev_err(dev, "memory leak!\n");
849
850 nl->outpos = 0;
851 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
852
853 len = skb->len;
854 if( len < SBNI_MIN_LEN )
855 len = SBNI_MIN_LEN;
856
857 nl->tx_buf_p = skb;
858 nl->tx_frameno = DIV_ROUND_UP(len, nl->maxframe);
859 nl->framelen = len < nl->maxframe ? len : nl->maxframe;
860
861 outb( inb( dev->base_addr + CSR0 ) | TR_REQ, dev->base_addr + CSR0 );
862#ifdef CONFIG_SBNI_MULTILINE
863 netif_trans_update(nl->master);
864#else
865 netif_trans_update(dev);
866#endif
867}
868
869
870static void
871drop_xmit_queue( struct net_device *dev )
872{
873 struct net_local *nl = netdev_priv(dev);
874
875 if( nl->tx_buf_p )
876 dev_kfree_skb_any( nl->tx_buf_p ),
877 nl->tx_buf_p = NULL,
878#ifdef CONFIG_SBNI_MULTILINE
879 nl->master->stats.tx_errors++,
880 nl->master->stats.tx_carrier_errors++;
881#else
882 dev->stats.tx_errors++,
883 dev->stats.tx_carrier_errors++;
884#endif
885
886 nl->tx_frameno = 0;
887 nl->framelen = 0;
888 nl->outpos = 0;
889 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
890#ifdef CONFIG_SBNI_MULTILINE
891 netif_start_queue( nl->master );
892 netif_trans_update(nl->master);
893#else
894 netif_start_queue( dev );
895 netif_trans_update(dev);
896#endif
897}
898
899
900static void
901send_frame_header( struct net_device *dev, u32 *crc_p )
902{
903 struct net_local *nl = netdev_priv(dev);
904
905 u32 crc = *crc_p;
906 u32 len_field = nl->framelen + 6; /* CRC + frameno + reserved */
907 u8 value;
908
909 if( nl->state & FL_NEED_RESEND )
910 len_field |= FRAME_RETRY; /* non-first attempt... */
911
912 if( nl->outpos == 0 )
913 len_field |= FRAME_FIRST;
914
915 len_field |= (nl->state & FL_PREV_OK) ? FRAME_SENT_OK : FRAME_SENT_BAD;
916 outb( SBNI_SIG, dev->base_addr + DAT );
917
918 value = (u8) len_field;
919 outb( value, dev->base_addr + DAT );
920 crc = CRC32( value, crc );
921 value = (u8) (len_field >> 8);
922 outb( value, dev->base_addr + DAT );
923 crc = CRC32( value, crc );
924
925 outb( nl->tx_frameno, dev->base_addr + DAT );
926 crc = CRC32( nl->tx_frameno, crc );
927 outb( 0, dev->base_addr + DAT );
928 crc = CRC32( 0, crc );
929 *crc_p = crc;
930}
931
932
933/*
934 * if frame tail not needed (incorrect number or received twice),
935 * it won't store, but CRC will be calculated
936 */
937
938static int
939skip_tail( unsigned int ioaddr, unsigned int tail_len, u32 crc )
940{
941 while( tail_len-- )
942 crc = CRC32( inb( ioaddr + DAT ), crc );
943
944 return crc == CRC32_REMAINDER;
945}
946
947
948/*
949 * Preliminary checks if frame header is correct, calculates its CRC
950 * and split it to simple fields
951 */
952
953static int
954check_fhdr( u32 ioaddr, u32 *framelen, u32 *frameno, u32 *ack,
955 u32 *is_first, u32 *crc_p )
956{
957 u32 crc = *crc_p;
958 u8 value;
959
960 if( inb( ioaddr + DAT ) != SBNI_SIG )
961 return 0;
962
963 value = inb( ioaddr + DAT );
964 *framelen = (u32)value;
965 crc = CRC32( value, crc );
966 value = inb( ioaddr + DAT );
967 *framelen |= ((u32)value) << 8;
968 crc = CRC32( value, crc );
969
970 *ack = *framelen & FRAME_ACK_MASK;
971 *is_first = (*framelen & FRAME_FIRST) != 0;
972
973 if( (*framelen &= FRAME_LEN_MASK) < 6 ||
974 *framelen > SBNI_MAX_FRAME - 3 )
975 return 0;
976
977 value = inb( ioaddr + DAT );
978 *frameno = (u32)value;
979 crc = CRC32( value, crc );
980
981 crc = CRC32( inb( ioaddr + DAT ), crc ); /* reserved byte */
982 *framelen -= 2;
983
984 *crc_p = crc;
985 return 1;
986}
987
988
989static struct sk_buff *
990get_rx_buf( struct net_device *dev )
991{
992 /* +2 is to compensate for the alignment fixup below */
993 struct sk_buff *skb = dev_alloc_skb( ETHER_MAX_LEN + 2 );
994 if( !skb )
995 return NULL;
996
997 skb_reserve( skb, 2 ); /* Align IP on longword boundaries */
998 return skb;
999}
1000
1001
1002static void
1003indicate_pkt( struct net_device *dev )
1004{
1005 struct net_local *nl = netdev_priv(dev);
1006 struct sk_buff *skb = nl->rx_buf_p;
1007
1008 skb_put( skb, nl->inppos );
1009
1010#ifdef CONFIG_SBNI_MULTILINE
1011 skb->protocol = eth_type_trans( skb, nl->master );
1012 netif_rx( skb );
1013 ++nl->master->stats.rx_packets;
1014 nl->master->stats.rx_bytes += nl->inppos;
1015#else
1016 skb->protocol = eth_type_trans( skb, dev );
1017 netif_rx( skb );
1018 ++dev->stats.rx_packets;
1019 dev->stats.rx_bytes += nl->inppos;
1020#endif
1021 nl->rx_buf_p = NULL; /* protocol driver will clear this sk_buff */
1022}
1023
1024
1025/* -------------------------------------------------------------------------- */
1026
1027/*
1028 * Routine checks periodically wire activity and regenerates marker if
1029 * connect was inactive for a long time.
1030 */
1031
1032static void
1033sbni_watchdog(struct timer_list *t)
1034{
1035 struct net_local *nl = from_timer(nl, t, watchdog);
1036 struct net_device *dev = nl->watchdog_dev;
1037 unsigned long flags;
1038 unsigned char csr0;
1039
1040 spin_lock_irqsave( &nl->lock, flags );
1041
1042 csr0 = inb( dev->base_addr + CSR0 );
1043 if( csr0 & RC_CHK ) {
1044
1045 if( nl->timer_ticks ) {
1046 if( csr0 & (RC_RDY | BU_EMP) )
1047 /* receiving not active */
1048 nl->timer_ticks--;
1049 } else {
1050 nl->in_stats.timeout_number++;
1051 if( nl->delta_rxl )
1052 timeout_change_level( dev );
1053
1054 outb( *(u_char *)&nl->csr1 | PR_RES,
1055 dev->base_addr + CSR1 );
1056 csr0 = inb( dev->base_addr + CSR0 );
1057 }
1058 } else
1059 nl->state &= ~FL_LINE_DOWN;
1060
1061 outb( csr0 | RC_CHK, dev->base_addr + CSR0 );
1062
1063 mod_timer(t, jiffies + SBNI_TIMEOUT);
1064
1065 spin_unlock_irqrestore( &nl->lock, flags );
1066}
1067
1068
1069static unsigned char rxl_tab[] = {
1070 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08,
1071 0x0a, 0x0c, 0x0f, 0x16, 0x18, 0x1a, 0x1c, 0x1f
1072};
1073
1074#define SIZE_OF_TIMEOUT_RXL_TAB 4
1075static unsigned char timeout_rxl_tab[] = {
1076 0x03, 0x05, 0x08, 0x0b
1077};
1078
1079/* -------------------------------------------------------------------------- */
1080
1081static void
1082card_start( struct net_device *dev )
1083{
1084 struct net_local *nl = netdev_priv(dev);
1085
1086 nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
1087 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
1088 nl->state |= FL_PREV_OK;
1089
1090 nl->inppos = nl->outpos = 0;
1091 nl->wait_frameno = 0;
1092 nl->tx_frameno = 0;
1093 nl->framelen = 0;
1094
1095 outb( *(u_char *)&nl->csr1 | PR_RES, dev->base_addr + CSR1 );
1096 outb( EN_INT, dev->base_addr + CSR0 );
1097}
1098
1099/* -------------------------------------------------------------------------- */
1100
1101/* Receive level auto-selection */
1102
1103static void
1104change_level( struct net_device *dev )
1105{
1106 struct net_local *nl = netdev_priv(dev);
1107
1108 if( nl->delta_rxl == 0 ) /* do not auto-negotiate RxL */
1109 return;
1110
1111 if( nl->cur_rxl_index == 0 )
1112 nl->delta_rxl = 1;
1113 else if( nl->cur_rxl_index == 15 )
1114 nl->delta_rxl = -1;
1115 else if( nl->cur_rxl_rcvd < nl->prev_rxl_rcvd )
1116 nl->delta_rxl = -nl->delta_rxl;
1117
1118 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index += nl->delta_rxl ];
1119 inb( dev->base_addr + CSR0 ); /* needs for PCI cards */
1120 outb( *(u8 *)&nl->csr1, dev->base_addr + CSR1 );
1121
1122 nl->prev_rxl_rcvd = nl->cur_rxl_rcvd;
1123 nl->cur_rxl_rcvd = 0;
1124}
1125
1126
1127static void
1128timeout_change_level( struct net_device *dev )
1129{
1130 struct net_local *nl = netdev_priv(dev);
1131
1132 nl->cur_rxl_index = timeout_rxl_tab[ nl->timeout_rxl ];
1133 if( ++nl->timeout_rxl >= 4 )
1134 nl->timeout_rxl = 0;
1135
1136 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
1137 inb( dev->base_addr + CSR0 );
1138 outb( *(unsigned char *)&nl->csr1, dev->base_addr + CSR1 );
1139
1140 nl->prev_rxl_rcvd = nl->cur_rxl_rcvd;
1141 nl->cur_rxl_rcvd = 0;
1142}
1143
1144/* -------------------------------------------------------------------------- */
1145
1146/*
1147 * Open/initialize the board.
1148 */
1149
1150static int
1151sbni_open( struct net_device *dev )
1152{
1153 struct net_local *nl = netdev_priv(dev);
1154 struct timer_list *w = &nl->watchdog;
1155
1156 /*
1157 * For double ISA adapters within "common irq" mode, we have to
1158 * determine whether primary or secondary channel is initialized,
1159 * and set the irq handler only in first case.
1160 */
1161 if( dev->base_addr < 0x400 ) { /* ISA only */
1162 struct net_device **p = sbni_cards;
1163 for( ; *p && p < sbni_cards + SBNI_MAX_NUM_CARDS; ++p )
1164 if( (*p)->irq == dev->irq &&
1165 ((*p)->base_addr == dev->base_addr + 4 ||
1166 (*p)->base_addr == dev->base_addr - 4) &&
1167 (*p)->flags & IFF_UP ) {
1168
1169 ((struct net_local *) (netdev_priv(*p)))
1170 ->second = dev;
1171 netdev_notice(dev, "using shared irq with %s\n",
1172 (*p)->name);
1173 nl->state |= FL_SECONDARY;
1174 goto handler_attached;
1175 }
1176 }
1177
1178 if( request_irq(dev->irq, sbni_interrupt, IRQF_SHARED, dev->name, dev) ) {
1179 netdev_err(dev, "unable to get IRQ %d\n", dev->irq);
1180 return -EAGAIN;
1181 }
1182
1183handler_attached:
1184
1185 spin_lock( &nl->lock );
1186 memset( &dev->stats, 0, sizeof(struct net_device_stats) );
1187 memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
1188
1189 card_start( dev );
1190
1191 netif_start_queue( dev );
1192
1193 /* set timer watchdog */
1194 nl->watchdog_dev = dev;
1195 timer_setup(w, sbni_watchdog, 0);
1196 w->expires = jiffies + SBNI_TIMEOUT;
1197 add_timer( w );
1198
1199 spin_unlock( &nl->lock );
1200 return 0;
1201}
1202
1203
1204static int
1205sbni_close( struct net_device *dev )
1206{
1207 struct net_local *nl = netdev_priv(dev);
1208
1209 if( nl->second && nl->second->flags & IFF_UP ) {
1210 netdev_notice(dev, "Secondary channel (%s) is active!\n",
1211 nl->second->name);
1212 return -EBUSY;
1213 }
1214
1215#ifdef CONFIG_SBNI_MULTILINE
1216 if( nl->state & FL_SLAVE )
1217 emancipate( dev );
1218 else
1219 while( nl->link ) /* it's master device! */
1220 emancipate( nl->link );
1221#endif
1222
1223 spin_lock( &nl->lock );
1224
1225 nl->second = NULL;
1226 drop_xmit_queue( dev );
1227 netif_stop_queue( dev );
1228
1229 del_timer( &nl->watchdog );
1230
1231 outb( 0, dev->base_addr + CSR0 );
1232
1233 if( !(nl->state & FL_SECONDARY) )
1234 free_irq( dev->irq, dev );
1235 nl->state &= FL_SECONDARY;
1236
1237 spin_unlock( &nl->lock );
1238 return 0;
1239}
1240
1241
1242/*
1243 Valid combinations in CSR0 (for probing):
1244
1245 VALID_DECODER 0000,0011,1011,1010
1246
1247 ; 0 ; -
1248 TR_REQ ; 1 ; +
1249 TR_RDY ; 2 ; -
1250 TR_RDY TR_REQ ; 3 ; +
1251 BU_EMP ; 4 ; +
1252 BU_EMP TR_REQ ; 5 ; +
1253 BU_EMP TR_RDY ; 6 ; -
1254 BU_EMP TR_RDY TR_REQ ; 7 ; +
1255 RC_RDY ; 8 ; +
1256 RC_RDY TR_REQ ; 9 ; +
1257 RC_RDY TR_RDY ; 10 ; -
1258 RC_RDY TR_RDY TR_REQ ; 11 ; -
1259 RC_RDY BU_EMP ; 12 ; -
1260 RC_RDY BU_EMP TR_REQ ; 13 ; -
1261 RC_RDY BU_EMP TR_RDY ; 14 ; -
1262 RC_RDY BU_EMP TR_RDY TR_REQ ; 15 ; -
1263*/
1264
1265#define VALID_DECODER (2 + 8 + 0x10 + 0x20 + 0x80 + 0x100 + 0x200)
1266
1267
1268static int
1269sbni_card_probe( unsigned long ioaddr )
1270{
1271 unsigned char csr0;
1272
1273 csr0 = inb( ioaddr + CSR0 );
1274 if( csr0 != 0xff && csr0 != 0x00 ) {
1275 csr0 &= ~EN_INT;
1276 if( csr0 & BU_EMP )
1277 csr0 |= EN_INT;
1278
1279 if( VALID_DECODER & (1 << (csr0 >> 4)) )
1280 return 0;
1281 }
1282
1283 return -ENODEV;
1284}
1285
1286/* -------------------------------------------------------------------------- */
1287
1288static int
1289sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
1290{
1291 struct net_local *nl = netdev_priv(dev);
1292 struct sbni_flags flags;
1293 int error = 0;
1294
1295#ifdef CONFIG_SBNI_MULTILINE
1296 struct net_device *slave_dev;
1297 char slave_name[ 8 ];
1298#endif
1299
1300 switch( cmd ) {
1301 case SIOCDEVGETINSTATS :
1302 if (copy_to_user( ifr->ifr_data, &nl->in_stats,
1303 sizeof(struct sbni_in_stats) ))
1304 error = -EFAULT;
1305 break;
1306
1307 case SIOCDEVRESINSTATS :
1308 if (!capable(CAP_NET_ADMIN))
1309 return -EPERM;
1310 memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
1311 break;
1312
1313 case SIOCDEVGHWSTATE :
1314 flags.mac_addr = *(u32 *)(dev->dev_addr + 3);
1315 flags.rate = nl->csr1.rate;
1316 flags.slow_mode = (nl->state & FL_SLOW_MODE) != 0;
1317 flags.rxl = nl->cur_rxl_index;
1318 flags.fixed_rxl = nl->delta_rxl == 0;
1319
1320 if (copy_to_user( ifr->ifr_data, &flags, sizeof flags ))
1321 error = -EFAULT;
1322 break;
1323
1324 case SIOCDEVSHWSTATE :
1325 if (!capable(CAP_NET_ADMIN))
1326 return -EPERM;
1327
1328 spin_lock( &nl->lock );
1329 flags = *(struct sbni_flags*) &ifr->ifr_ifru;
1330 if( flags.fixed_rxl )
1331 nl->delta_rxl = 0,
1332 nl->cur_rxl_index = flags.rxl;
1333 else
1334 nl->delta_rxl = DEF_RXL_DELTA,
1335 nl->cur_rxl_index = DEF_RXL;
1336
1337 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
1338 nl->csr1.rate = flags.rate;
1339 outb( *(u8 *)&nl->csr1 | PR_RES, dev->base_addr + CSR1 );
1340 spin_unlock( &nl->lock );
1341 break;
1342
1343#ifdef CONFIG_SBNI_MULTILINE
1344
1345 case SIOCDEVENSLAVE :
1346 if (!capable(CAP_NET_ADMIN))
1347 return -EPERM;
1348
1349 if (copy_from_user( slave_name, ifr->ifr_data, sizeof slave_name ))
1350 return -EFAULT;
1351 slave_dev = dev_get_by_name(&init_net, slave_name );
1352 if( !slave_dev || !(slave_dev->flags & IFF_UP) ) {
1353 netdev_err(dev, "trying to enslave non-active device %s\n",
1354 slave_name);
1355 if (slave_dev)
1356 dev_put(slave_dev);
1357 return -EPERM;
1358 }
1359
1360 return enslave( dev, slave_dev );
1361
1362 case SIOCDEVEMANSIPATE :
1363 if (!capable(CAP_NET_ADMIN))
1364 return -EPERM;
1365
1366 return emancipate( dev );
1367
1368#endif /* CONFIG_SBNI_MULTILINE */
1369
1370 default :
1371 return -EOPNOTSUPP;
1372 }
1373
1374 return error;
1375}
1376
1377
1378#ifdef CONFIG_SBNI_MULTILINE
1379
1380static int
1381enslave( struct net_device *dev, struct net_device *slave_dev )
1382{
1383 struct net_local *nl = netdev_priv(dev);
1384 struct net_local *snl = netdev_priv(slave_dev);
1385
1386 if( nl->state & FL_SLAVE ) /* This isn't master or free device */
1387 return -EBUSY;
1388
1389 if( snl->state & FL_SLAVE ) /* That was already enslaved */
1390 return -EBUSY;
1391
1392 spin_lock( &nl->lock );
1393 spin_lock( &snl->lock );
1394
1395 /* append to list */
1396 snl->link = nl->link;
1397 nl->link = slave_dev;
1398 snl->master = dev;
1399 snl->state |= FL_SLAVE;
1400
1401 /* Summary statistics of MultiLine operation will be stored
1402 in master's counters */
1403 memset( &slave_dev->stats, 0, sizeof(struct net_device_stats) );
1404 netif_stop_queue( slave_dev );
1405 netif_wake_queue( dev ); /* Now we are able to transmit */
1406
1407 spin_unlock( &snl->lock );
1408 spin_unlock( &nl->lock );
1409 netdev_notice(dev, "slave device (%s) attached\n", slave_dev->name);
1410 return 0;
1411}
1412
1413
1414static int
1415emancipate( struct net_device *dev )
1416{
1417 struct net_local *snl = netdev_priv(dev);
1418 struct net_device *p = snl->master;
1419 struct net_local *nl = netdev_priv(p);
1420
1421 if( !(snl->state & FL_SLAVE) )
1422 return -EINVAL;
1423
1424 spin_lock( &nl->lock );
1425 spin_lock( &snl->lock );
1426 drop_xmit_queue( dev );
1427
1428 /* exclude from list */
1429 for(;;) { /* must be in list */
1430 struct net_local *t = netdev_priv(p);
1431 if( t->link == dev ) {
1432 t->link = snl->link;
1433 break;
1434 }
1435 p = t->link;
1436 }
1437
1438 snl->link = NULL;
1439 snl->master = dev;
1440 snl->state &= ~FL_SLAVE;
1441
1442 netif_start_queue( dev );
1443
1444 spin_unlock( &snl->lock );
1445 spin_unlock( &nl->lock );
1446
1447 dev_put( dev );
1448 return 0;
1449}
1450
1451#endif
1452
1453static void
1454set_multicast_list( struct net_device *dev )
1455{
1456 return; /* sbni always operate in promiscuos mode */
1457}
1458
1459
1460#ifdef MODULE
1461module_param_hw_array(io, int, ioport, NULL, 0);
1462module_param_hw_array(irq, int, irq, NULL, 0);
1463module_param_array(baud, int, NULL, 0);
1464module_param_array(rxl, int, NULL, 0);
1465module_param_array(mac, int, NULL, 0);
1466module_param(skip_pci_probe, bool, 0);
1467
1468MODULE_LICENSE("GPL");
1469
1470
1471int __init init_module( void )
1472{
1473 struct net_device *dev;
1474 int err;
1475
1476 while( num < SBNI_MAX_NUM_CARDS ) {
1477 dev = alloc_netdev(sizeof(struct net_local), "sbni%d",
1478 NET_NAME_UNKNOWN, sbni_devsetup);
1479 if( !dev)
1480 break;
1481
1482 sprintf( dev->name, "sbni%d", num );
1483
1484 err = sbni_init(dev);
1485 if (err) {
1486 free_netdev(dev);
1487 break;
1488 }
1489
1490 if( register_netdev( dev ) ) {
1491 release_region( dev->base_addr, SBNI_IO_EXTENT );
1492 free_netdev( dev );
1493 break;
1494 }
1495 }
1496
1497 return *sbni_cards ? 0 : -ENODEV;
1498}
1499
1500void
1501cleanup_module(void)
1502{
1503 int i;
1504
1505 for (i = 0; i < SBNI_MAX_NUM_CARDS; ++i) {
1506 struct net_device *dev = sbni_cards[i];
1507 if (dev != NULL) {
1508 unregister_netdev(dev);
1509 release_region(dev->base_addr, SBNI_IO_EXTENT);
1510 free_netdev(dev);
1511 }
1512 }
1513}
1514
1515#else /* MODULE */
1516
1517static int __init
1518sbni_setup( char *p )
1519{
1520 int n, parm;
1521
1522 if( *p++ != '(' )
1523 goto bad_param;
1524
1525 for( n = 0, parm = 0; *p && n < 8; ) {
1526 (*dest[ parm ])[ n ] = simple_strtol( p, &p, 0 );
1527 if( !*p || *p == ')' )
1528 return 1;
1529 if( *p == ';' )
1530 ++p, ++n, parm = 0;
1531 else if( *p++ != ',' )
1532 break;
1533 else
1534 if( ++parm >= 5 )
1535 break;
1536 }
1537bad_param:
1538 pr_err("Error in sbni kernel parameter!\n");
1539 return 0;
1540}
1541
1542__setup( "sbni=", sbni_setup );
1543
1544#endif /* MODULE */
1545
1546/* -------------------------------------------------------------------------- */
1547
1548static u32
1549calc_crc32( u32 crc, u8 *p, u32 len )
1550{
1551 while( len-- )
1552 crc = CRC32( *p++, crc );
1553
1554 return crc;
1555}
1556
1557static u32 crc32tab[] __attribute__ ((aligned(8))) = {
1558 0xD202EF8D, 0xA505DF1B, 0x3C0C8EA1, 0x4B0BBE37,
1559 0xD56F2B94, 0xA2681B02, 0x3B614AB8, 0x4C667A2E,
1560 0xDCD967BF, 0xABDE5729, 0x32D70693, 0x45D03605,
1561 0xDBB4A3A6, 0xACB39330, 0x35BAC28A, 0x42BDF21C,
1562 0xCFB5FFE9, 0xB8B2CF7F, 0x21BB9EC5, 0x56BCAE53,
1563 0xC8D83BF0, 0xBFDF0B66, 0x26D65ADC, 0x51D16A4A,
1564 0xC16E77DB, 0xB669474D, 0x2F6016F7, 0x58672661,
1565 0xC603B3C2, 0xB1048354, 0x280DD2EE, 0x5F0AE278,
1566 0xE96CCF45, 0x9E6BFFD3, 0x0762AE69, 0x70659EFF,
1567 0xEE010B5C, 0x99063BCA, 0x000F6A70, 0x77085AE6,
1568 0xE7B74777, 0x90B077E1, 0x09B9265B, 0x7EBE16CD,
1569 0xE0DA836E, 0x97DDB3F8, 0x0ED4E242, 0x79D3D2D4,
1570 0xF4DBDF21, 0x83DCEFB7, 0x1AD5BE0D, 0x6DD28E9B,
1571 0xF3B61B38, 0x84B12BAE, 0x1DB87A14, 0x6ABF4A82,
1572 0xFA005713, 0x8D076785, 0x140E363F, 0x630906A9,
1573 0xFD6D930A, 0x8A6AA39C, 0x1363F226, 0x6464C2B0,
1574 0xA4DEAE1D, 0xD3D99E8B, 0x4AD0CF31, 0x3DD7FFA7,
1575 0xA3B36A04, 0xD4B45A92, 0x4DBD0B28, 0x3ABA3BBE,
1576 0xAA05262F, 0xDD0216B9, 0x440B4703, 0x330C7795,
1577 0xAD68E236, 0xDA6FD2A0, 0x4366831A, 0x3461B38C,
1578 0xB969BE79, 0xCE6E8EEF, 0x5767DF55, 0x2060EFC3,
1579 0xBE047A60, 0xC9034AF6, 0x500A1B4C, 0x270D2BDA,
1580 0xB7B2364B, 0xC0B506DD, 0x59BC5767, 0x2EBB67F1,
1581 0xB0DFF252, 0xC7D8C2C4, 0x5ED1937E, 0x29D6A3E8,
1582 0x9FB08ED5, 0xE8B7BE43, 0x71BEEFF9, 0x06B9DF6F,
1583 0x98DD4ACC, 0xEFDA7A5A, 0x76D32BE0, 0x01D41B76,
1584 0x916B06E7, 0xE66C3671, 0x7F6567CB, 0x0862575D,
1585 0x9606C2FE, 0xE101F268, 0x7808A3D2, 0x0F0F9344,
1586 0x82079EB1, 0xF500AE27, 0x6C09FF9D, 0x1B0ECF0B,
1587 0x856A5AA8, 0xF26D6A3E, 0x6B643B84, 0x1C630B12,
1588 0x8CDC1683, 0xFBDB2615, 0x62D277AF, 0x15D54739,
1589 0x8BB1D29A, 0xFCB6E20C, 0x65BFB3B6, 0x12B88320,
1590 0x3FBA6CAD, 0x48BD5C3B, 0xD1B40D81, 0xA6B33D17,
1591 0x38D7A8B4, 0x4FD09822, 0xD6D9C998, 0xA1DEF90E,
1592 0x3161E49F, 0x4666D409, 0xDF6F85B3, 0xA868B525,
1593 0x360C2086, 0x410B1010, 0xD80241AA, 0xAF05713C,
1594 0x220D7CC9, 0x550A4C5F, 0xCC031DE5, 0xBB042D73,
1595 0x2560B8D0, 0x52678846, 0xCB6ED9FC, 0xBC69E96A,
1596 0x2CD6F4FB, 0x5BD1C46D, 0xC2D895D7, 0xB5DFA541,
1597 0x2BBB30E2, 0x5CBC0074, 0xC5B551CE, 0xB2B26158,
1598 0x04D44C65, 0x73D37CF3, 0xEADA2D49, 0x9DDD1DDF,
1599 0x03B9887C, 0x74BEB8EA, 0xEDB7E950, 0x9AB0D9C6,
1600 0x0A0FC457, 0x7D08F4C1, 0xE401A57B, 0x930695ED,
1601 0x0D62004E, 0x7A6530D8, 0xE36C6162, 0x946B51F4,
1602 0x19635C01, 0x6E646C97, 0xF76D3D2D, 0x806A0DBB,
1603 0x1E0E9818, 0x6909A88E, 0xF000F934, 0x8707C9A2,
1604 0x17B8D433, 0x60BFE4A5, 0xF9B6B51F, 0x8EB18589,
1605 0x10D5102A, 0x67D220BC, 0xFEDB7106, 0x89DC4190,
1606 0x49662D3D, 0x3E611DAB, 0xA7684C11, 0xD06F7C87,
1607 0x4E0BE924, 0x390CD9B2, 0xA0058808, 0xD702B89E,
1608 0x47BDA50F, 0x30BA9599, 0xA9B3C423, 0xDEB4F4B5,
1609 0x40D06116, 0x37D75180, 0xAEDE003A, 0xD9D930AC,
1610 0x54D13D59, 0x23D60DCF, 0xBADF5C75, 0xCDD86CE3,
1611 0x53BCF940, 0x24BBC9D6, 0xBDB2986C, 0xCAB5A8FA,
1612 0x5A0AB56B, 0x2D0D85FD, 0xB404D447, 0xC303E4D1,
1613 0x5D677172, 0x2A6041E4, 0xB369105E, 0xC46E20C8,
1614 0x72080DF5, 0x050F3D63, 0x9C066CD9, 0xEB015C4F,
1615 0x7565C9EC, 0x0262F97A, 0x9B6BA8C0, 0xEC6C9856,
1616 0x7CD385C7, 0x0BD4B551, 0x92DDE4EB, 0xE5DAD47D,
1617 0x7BBE41DE, 0x0CB97148, 0x95B020F2, 0xE2B71064,
1618 0x6FBF1D91, 0x18B82D07, 0x81B17CBD, 0xF6B64C2B,
1619 0x68D2D988, 0x1FD5E91E, 0x86DCB8A4, 0xF1DB8832,
1620 0x616495A3, 0x1663A535, 0x8F6AF48F, 0xF86DC419,
1621 0x660951BA, 0x110E612C, 0x88073096, 0xFF000000
1622};
1623
1/* sbni.c: Granch SBNI12 leased line adapters driver for linux
2 *
3 * Written 2001 by Denis I.Timofeev (timofeev@granch.ru)
4 *
5 * Previous versions were written by Yaroslav Polyakov,
6 * Alexey Zverev and Max Khon.
7 *
8 * Driver supports SBNI12-02,-04,-05,-10,-11 cards, single and
9 * double-channel, PCI and ISA modifications.
10 * More info and useful utilities to work with SBNI12 cards you can find
11 * at http://www.granch.com (English) or http://www.granch.ru (Russian)
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License.
15 *
16 *
17 * 5.0.1 Jun 22 2001
18 * - Fixed bug in probe
19 * 5.0.0 Jun 06 2001
20 * - Driver was completely redesigned by Denis I.Timofeev,
21 * - now PCI/Dual, ISA/Dual (with single interrupt line) models are
22 * - supported
23 * 3.3.0 Thu Feb 24 21:30:28 NOVT 2000
24 * - PCI cards support
25 * 3.2.0 Mon Dec 13 22:26:53 NOVT 1999
26 * - Completely rebuilt all the packet storage system
27 * - to work in Ethernet-like style.
28 * 3.1.1 just fixed some bugs (5 aug 1999)
29 * 3.1.0 added balancing feature (26 apr 1999)
30 * 3.0.1 just fixed some bugs (14 apr 1999).
31 * 3.0.0 Initial Revision, Yaroslav Polyakov (24 Feb 1999)
32 * - added pre-calculation for CRC, fixed bug with "len-2" frames,
33 * - removed outbound fragmentation (MTU=1000), written CRC-calculation
34 * - on asm, added work with hard_headers and now we have our own cache
35 * - for them, optionally supported word-interchange on some chipsets,
36 *
37 * Known problem: this driver wasn't tested on multiprocessor machine.
38 */
39
40#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
41
42#include <linux/module.h>
43#include <linux/kernel.h>
44#include <linux/ptrace.h>
45#include <linux/fcntl.h>
46#include <linux/ioport.h>
47#include <linux/interrupt.h>
48#include <linux/string.h>
49#include <linux/errno.h>
50#include <linux/netdevice.h>
51#include <linux/etherdevice.h>
52#include <linux/pci.h>
53#include <linux/skbuff.h>
54#include <linux/timer.h>
55#include <linux/init.h>
56#include <linux/delay.h>
57
58#include <net/net_namespace.h>
59#include <net/arp.h>
60
61#include <asm/io.h>
62#include <asm/types.h>
63#include <asm/byteorder.h>
64#include <asm/irq.h>
65#include <asm/uaccess.h>
66
67#include "sbni.h"
68
69/* device private data */
70
71struct net_local {
72 struct timer_list watchdog;
73
74 spinlock_t lock;
75 struct sk_buff *rx_buf_p; /* receive buffer ptr */
76 struct sk_buff *tx_buf_p; /* transmit buffer ptr */
77
78 unsigned int framelen; /* current frame length */
79 unsigned int maxframe; /* maximum valid frame length */
80 unsigned int state;
81 unsigned int inppos, outpos; /* positions in rx/tx buffers */
82
83 /* transmitting frame number - from frames qty to 1 */
84 unsigned int tx_frameno;
85
86 /* expected number of next receiving frame */
87 unsigned int wait_frameno;
88
89 /* count of failed attempts to frame send - 32 attempts do before
90 error - while receiver tunes on opposite side of wire */
91 unsigned int trans_errors;
92
93 /* idle time; send pong when limit exceeded */
94 unsigned int timer_ticks;
95
96 /* fields used for receive level autoselection */
97 int delta_rxl;
98 unsigned int cur_rxl_index, timeout_rxl;
99 unsigned long cur_rxl_rcvd, prev_rxl_rcvd;
100
101 struct sbni_csr1 csr1; /* current value of CSR1 */
102 struct sbni_in_stats in_stats; /* internal statistics */
103
104 struct net_device *second; /* for ISA/dual cards */
105
106#ifdef CONFIG_SBNI_MULTILINE
107 struct net_device *master;
108 struct net_device *link;
109#endif
110};
111
112
113static int sbni_card_probe( unsigned long );
114static int sbni_pci_probe( struct net_device * );
115static struct net_device *sbni_probe1(struct net_device *, unsigned long, int);
116static int sbni_open( struct net_device * );
117static int sbni_close( struct net_device * );
118static netdev_tx_t sbni_start_xmit(struct sk_buff *,
119 struct net_device * );
120static int sbni_ioctl( struct net_device *, struct ifreq *, int );
121static void set_multicast_list( struct net_device * );
122
123static irqreturn_t sbni_interrupt( int, void * );
124static void handle_channel( struct net_device * );
125static int recv_frame( struct net_device * );
126static void send_frame( struct net_device * );
127static int upload_data( struct net_device *,
128 unsigned, unsigned, unsigned, u32 );
129static void download_data( struct net_device *, u32 * );
130static void sbni_watchdog( unsigned long );
131static void interpret_ack( struct net_device *, unsigned );
132static int append_frame_to_pkt( struct net_device *, unsigned, u32 );
133static void indicate_pkt( struct net_device * );
134static void card_start( struct net_device * );
135static void prepare_to_send( struct sk_buff *, struct net_device * );
136static void drop_xmit_queue( struct net_device * );
137static void send_frame_header( struct net_device *, u32 * );
138static int skip_tail( unsigned int, unsigned int, u32 );
139static int check_fhdr( u32, u32 *, u32 *, u32 *, u32 *, u32 * );
140static void change_level( struct net_device * );
141static void timeout_change_level( struct net_device * );
142static u32 calc_crc32( u32, u8 *, u32 );
143static struct sk_buff * get_rx_buf( struct net_device * );
144static int sbni_init( struct net_device * );
145
146#ifdef CONFIG_SBNI_MULTILINE
147static int enslave( struct net_device *, struct net_device * );
148static int emancipate( struct net_device * );
149#endif
150
151#ifdef __i386__
152#define ASM_CRC 1
153#endif
154
155static const char version[] =
156 "Granch SBNI12 driver ver 5.0.1 Jun 22 2001 Denis I.Timofeev.\n";
157
158static bool skip_pci_probe __initdata = false;
159static int scandone __initdata = 0;
160static int num __initdata = 0;
161
162static unsigned char rxl_tab[];
163static u32 crc32tab[];
164
165/* A list of all installed devices, for removing the driver module. */
166static struct net_device *sbni_cards[ SBNI_MAX_NUM_CARDS ];
167
168/* Lists of device's parameters */
169static u32 io[ SBNI_MAX_NUM_CARDS ] __initdata =
170 { [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
171static u32 irq[ SBNI_MAX_NUM_CARDS ] __initdata;
172static u32 baud[ SBNI_MAX_NUM_CARDS ] __initdata;
173static u32 rxl[ SBNI_MAX_NUM_CARDS ] __initdata =
174 { [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
175static u32 mac[ SBNI_MAX_NUM_CARDS ] __initdata;
176
177#ifndef MODULE
178typedef u32 iarr[];
179static iarr __initdata *dest[5] = { &io, &irq, &baud, &rxl, &mac };
180#endif
181
182/* A zero-terminated list of I/O addresses to be probed on ISA bus */
183static unsigned int netcard_portlist[ ] __initdata = {
184 0x210, 0x214, 0x220, 0x224, 0x230, 0x234, 0x240, 0x244, 0x250, 0x254,
185 0x260, 0x264, 0x270, 0x274, 0x280, 0x284, 0x290, 0x294, 0x2a0, 0x2a4,
186 0x2b0, 0x2b4, 0x2c0, 0x2c4, 0x2d0, 0x2d4, 0x2e0, 0x2e4, 0x2f0, 0x2f4,
187 0 };
188
189#define NET_LOCAL_LOCK(dev) (((struct net_local *)netdev_priv(dev))->lock)
190
191/*
192 * Look for SBNI card which addr stored in dev->base_addr, if nonzero.
193 * Otherwise, look through PCI bus. If none PCI-card was found, scan ISA.
194 */
195
196static inline int __init
197sbni_isa_probe( struct net_device *dev )
198{
199 if( dev->base_addr > 0x1ff &&
200 request_region( dev->base_addr, SBNI_IO_EXTENT, dev->name ) &&
201 sbni_probe1( dev, dev->base_addr, dev->irq ) )
202
203 return 0;
204 else {
205 pr_err("base address 0x%lx is busy, or adapter is malfunctional!\n",
206 dev->base_addr);
207 return -ENODEV;
208 }
209}
210
211static const struct net_device_ops sbni_netdev_ops = {
212 .ndo_open = sbni_open,
213 .ndo_stop = sbni_close,
214 .ndo_start_xmit = sbni_start_xmit,
215 .ndo_set_rx_mode = set_multicast_list,
216 .ndo_do_ioctl = sbni_ioctl,
217 .ndo_change_mtu = eth_change_mtu,
218 .ndo_set_mac_address = eth_mac_addr,
219 .ndo_validate_addr = eth_validate_addr,
220};
221
222static void __init sbni_devsetup(struct net_device *dev)
223{
224 ether_setup( dev );
225 dev->netdev_ops = &sbni_netdev_ops;
226}
227
228int __init sbni_probe(int unit)
229{
230 struct net_device *dev;
231 int err;
232
233 dev = alloc_netdev(sizeof(struct net_local), "sbni", sbni_devsetup);
234 if (!dev)
235 return -ENOMEM;
236
237 dev->netdev_ops = &sbni_netdev_ops;
238
239 sprintf(dev->name, "sbni%d", unit);
240 netdev_boot_setup_check(dev);
241
242 err = sbni_init(dev);
243 if (err) {
244 free_netdev(dev);
245 return err;
246 }
247
248 err = register_netdev(dev);
249 if (err) {
250 release_region( dev->base_addr, SBNI_IO_EXTENT );
251 free_netdev(dev);
252 return err;
253 }
254 pr_info_once("%s", version);
255 return 0;
256}
257
258static int __init sbni_init(struct net_device *dev)
259{
260 int i;
261 if( dev->base_addr )
262 return sbni_isa_probe( dev );
263 /* otherwise we have to perform search our adapter */
264
265 if( io[ num ] != -1 )
266 dev->base_addr = io[ num ],
267 dev->irq = irq[ num ];
268 else if( scandone || io[ 0 ] != -1 )
269 return -ENODEV;
270
271 /* if io[ num ] contains non-zero address, then that is on ISA bus */
272 if( dev->base_addr )
273 return sbni_isa_probe( dev );
274
275 /* ...otherwise - scan PCI first */
276 if( !skip_pci_probe && !sbni_pci_probe( dev ) )
277 return 0;
278
279 if( io[ num ] == -1 ) {
280 /* Auto-scan will be stopped when first ISA card were found */
281 scandone = 1;
282 if( num > 0 )
283 return -ENODEV;
284 }
285
286 for( i = 0; netcard_portlist[ i ]; ++i ) {
287 int ioaddr = netcard_portlist[ i ];
288 if( request_region( ioaddr, SBNI_IO_EXTENT, dev->name ) &&
289 sbni_probe1( dev, ioaddr, 0 ))
290 return 0;
291 }
292
293 return -ENODEV;
294}
295
296
297static int __init
298sbni_pci_probe( struct net_device *dev )
299{
300 struct pci_dev *pdev = NULL;
301
302 while( (pdev = pci_get_class( PCI_CLASS_NETWORK_OTHER << 8, pdev ))
303 != NULL ) {
304 int pci_irq_line;
305 unsigned long pci_ioaddr;
306
307 if( pdev->vendor != SBNI_PCI_VENDOR &&
308 pdev->device != SBNI_PCI_DEVICE )
309 continue;
310
311 pci_ioaddr = pci_resource_start( pdev, 0 );
312 pci_irq_line = pdev->irq;
313
314 /* Avoid already found cards from previous calls */
315 if( !request_region( pci_ioaddr, SBNI_IO_EXTENT, dev->name ) ) {
316 if (pdev->subsystem_device != 2)
317 continue;
318
319 /* Dual adapter is present */
320 if (!request_region(pci_ioaddr += 4, SBNI_IO_EXTENT,
321 dev->name ) )
322 continue;
323 }
324
325 if (pci_irq_line <= 0 || pci_irq_line >= nr_irqs)
326 pr_warn(
327"WARNING: The PCI BIOS assigned this PCI card to IRQ %d, which is unlikely to work!.\n"
328"You should use the PCI BIOS setup to assign a valid IRQ line.\n",
329 pci_irq_line );
330
331 /* avoiding re-enable dual adapters */
332 if( (pci_ioaddr & 7) == 0 && pci_enable_device( pdev ) ) {
333 release_region( pci_ioaddr, SBNI_IO_EXTENT );
334 pci_dev_put( pdev );
335 return -EIO;
336 }
337 if( sbni_probe1( dev, pci_ioaddr, pci_irq_line ) ) {
338 SET_NETDEV_DEV(dev, &pdev->dev);
339 /* not the best thing to do, but this is all messed up
340 for hotplug systems anyway... */
341 pci_dev_put( pdev );
342 return 0;
343 }
344 }
345 return -ENODEV;
346}
347
348
349static struct net_device * __init
350sbni_probe1( struct net_device *dev, unsigned long ioaddr, int irq )
351{
352 struct net_local *nl;
353
354 if( sbni_card_probe( ioaddr ) ) {
355 release_region( ioaddr, SBNI_IO_EXTENT );
356 return NULL;
357 }
358
359 outb( 0, ioaddr + CSR0 );
360
361 if( irq < 2 ) {
362 unsigned long irq_mask;
363
364 irq_mask = probe_irq_on();
365 outb( EN_INT | TR_REQ, ioaddr + CSR0 );
366 outb( PR_RES, ioaddr + CSR1 );
367 mdelay(50);
368 irq = probe_irq_off(irq_mask);
369 outb( 0, ioaddr + CSR0 );
370
371 if( !irq ) {
372 pr_err("%s: can't detect device irq!\n", dev->name);
373 release_region( ioaddr, SBNI_IO_EXTENT );
374 return NULL;
375 }
376 } else if( irq == 2 )
377 irq = 9;
378
379 dev->irq = irq;
380 dev->base_addr = ioaddr;
381
382 /* Fill in sbni-specific dev fields. */
383 nl = netdev_priv(dev);
384 if( !nl ) {
385 pr_err("%s: unable to get memory!\n", dev->name);
386 release_region( ioaddr, SBNI_IO_EXTENT );
387 return NULL;
388 }
389
390 memset( nl, 0, sizeof(struct net_local) );
391 spin_lock_init( &nl->lock );
392
393 /* store MAC address (generate if that isn't known) */
394 *(__be16 *)dev->dev_addr = htons( 0x00ff );
395 *(__be32 *)(dev->dev_addr + 2) = htonl( 0x01000000 |
396 ((mac[num] ?
397 mac[num] :
398 (u32)((long)netdev_priv(dev))) & 0x00ffffff));
399
400 /* store link settings (speed, receive level ) */
401 nl->maxframe = DEFAULT_FRAME_LEN;
402 nl->csr1.rate = baud[ num ];
403
404 if( (nl->cur_rxl_index = rxl[ num ]) == -1 )
405 /* autotune rxl */
406 nl->cur_rxl_index = DEF_RXL,
407 nl->delta_rxl = DEF_RXL_DELTA;
408 else
409 nl->delta_rxl = 0;
410 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
411 if( inb( ioaddr + CSR0 ) & 0x01 )
412 nl->state |= FL_SLOW_MODE;
413
414 pr_notice("%s: ioaddr %#lx, irq %d, MAC: 00:ff:01:%02x:%02x:%02x\n",
415 dev->name, dev->base_addr, dev->irq,
416 ((u8 *)dev->dev_addr)[3],
417 ((u8 *)dev->dev_addr)[4],
418 ((u8 *)dev->dev_addr)[5]);
419
420 pr_notice("%s: speed %d",
421 dev->name,
422 ((nl->state & FL_SLOW_MODE) ? 500000 : 2000000)
423 / (1 << nl->csr1.rate));
424
425 if( nl->delta_rxl == 0 )
426 pr_cont(", receive level 0x%x (fixed)\n", nl->cur_rxl_index);
427 else
428 pr_cont(", receive level (auto)\n");
429
430#ifdef CONFIG_SBNI_MULTILINE
431 nl->master = dev;
432 nl->link = NULL;
433#endif
434
435 sbni_cards[ num++ ] = dev;
436 return dev;
437}
438
439/* -------------------------------------------------------------------------- */
440
441#ifdef CONFIG_SBNI_MULTILINE
442
443static netdev_tx_t
444sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
445{
446 struct net_device *p;
447
448 netif_stop_queue( dev );
449
450 /* Looking for idle device in the list */
451 for( p = dev; p; ) {
452 struct net_local *nl = netdev_priv(p);
453 spin_lock( &nl->lock );
454 if( nl->tx_buf_p || (nl->state & FL_LINE_DOWN) ) {
455 p = nl->link;
456 spin_unlock( &nl->lock );
457 } else {
458 /* Idle dev is found */
459 prepare_to_send( skb, p );
460 spin_unlock( &nl->lock );
461 netif_start_queue( dev );
462 return NETDEV_TX_OK;
463 }
464 }
465
466 return NETDEV_TX_BUSY;
467}
468
469#else /* CONFIG_SBNI_MULTILINE */
470
471static netdev_tx_t
472sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
473{
474 struct net_local *nl = netdev_priv(dev);
475
476 netif_stop_queue( dev );
477 spin_lock( &nl->lock );
478
479 prepare_to_send( skb, dev );
480
481 spin_unlock( &nl->lock );
482 return NETDEV_TX_OK;
483}
484
485#endif /* CONFIG_SBNI_MULTILINE */
486
487/* -------------------------------------------------------------------------- */
488
489/* interrupt handler */
490
491/*
492 * SBNI12D-10, -11/ISA boards within "common interrupt" mode could not
493 * be looked as two independent single-channel devices. Every channel seems
494 * as Ethernet interface but interrupt handler must be common. Really, first
495 * channel ("master") driver only registers the handler. In its struct net_local
496 * it has got pointer to "slave" channel's struct net_local and handles that's
497 * interrupts too.
498 * dev of successfully attached ISA SBNI boards is linked to list.
499 * While next board driver is initialized, it scans this list. If one
500 * has found dev with same irq and ioaddr different by 4 then it assumes
501 * this board to be "master".
502 */
503
504static irqreturn_t
505sbni_interrupt( int irq, void *dev_id )
506{
507 struct net_device *dev = dev_id;
508 struct net_local *nl = netdev_priv(dev);
509 int repeat;
510
511 spin_lock( &nl->lock );
512 if( nl->second )
513 spin_lock(&NET_LOCAL_LOCK(nl->second));
514
515 do {
516 repeat = 0;
517 if( inb( dev->base_addr + CSR0 ) & (RC_RDY | TR_RDY) )
518 handle_channel( dev ),
519 repeat = 1;
520 if( nl->second && /* second channel present */
521 (inb( nl->second->base_addr+CSR0 ) & (RC_RDY | TR_RDY)) )
522 handle_channel( nl->second ),
523 repeat = 1;
524 } while( repeat );
525
526 if( nl->second )
527 spin_unlock(&NET_LOCAL_LOCK(nl->second));
528 spin_unlock( &nl->lock );
529 return IRQ_HANDLED;
530}
531
532
533static void
534handle_channel( struct net_device *dev )
535{
536 struct net_local *nl = netdev_priv(dev);
537 unsigned long ioaddr = dev->base_addr;
538
539 int req_ans;
540 unsigned char csr0;
541
542#ifdef CONFIG_SBNI_MULTILINE
543 /* Lock the master device because we going to change its local data */
544 if( nl->state & FL_SLAVE )
545 spin_lock(&NET_LOCAL_LOCK(nl->master));
546#endif
547
548 outb( (inb( ioaddr + CSR0 ) & ~EN_INT) | TR_REQ, ioaddr + CSR0 );
549
550 nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
551 for(;;) {
552 csr0 = inb( ioaddr + CSR0 );
553 if( ( csr0 & (RC_RDY | TR_RDY) ) == 0 )
554 break;
555
556 req_ans = !(nl->state & FL_PREV_OK);
557
558 if( csr0 & RC_RDY )
559 req_ans = recv_frame( dev );
560
561 /*
562 * TR_RDY always equals 1 here because we have owned the marker,
563 * and we set TR_REQ when disabled interrupts
564 */
565 csr0 = inb( ioaddr + CSR0 );
566 if( !(csr0 & TR_RDY) || (csr0 & RC_RDY) )
567 netdev_err(dev, "internal error!\n");
568
569 /* if state & FL_NEED_RESEND != 0 then tx_frameno != 0 */
570 if( req_ans || nl->tx_frameno != 0 )
571 send_frame( dev );
572 else
573 /* send marker without any data */
574 outb( inb( ioaddr + CSR0 ) & ~TR_REQ, ioaddr + CSR0 );
575 }
576
577 outb( inb( ioaddr + CSR0 ) | EN_INT, ioaddr + CSR0 );
578
579#ifdef CONFIG_SBNI_MULTILINE
580 if( nl->state & FL_SLAVE )
581 spin_unlock(&NET_LOCAL_LOCK(nl->master));
582#endif
583}
584
585
586/*
587 * Routine returns 1 if it need to acknoweledge received frame.
588 * Empty frame received without errors won't be acknoweledged.
589 */
590
591static int
592recv_frame( struct net_device *dev )
593{
594 struct net_local *nl = netdev_priv(dev);
595 unsigned long ioaddr = dev->base_addr;
596
597 u32 crc = CRC32_INITIAL;
598
599 unsigned framelen = 0, frameno, ack;
600 unsigned is_first, frame_ok = 0;
601
602 if( check_fhdr( ioaddr, &framelen, &frameno, &ack, &is_first, &crc ) ) {
603 frame_ok = framelen > 4
604 ? upload_data( dev, framelen, frameno, is_first, crc )
605 : skip_tail( ioaddr, framelen, crc );
606 if( frame_ok )
607 interpret_ack( dev, ack );
608 }
609
610 outb( inb( ioaddr + CSR0 ) ^ CT_ZER, ioaddr + CSR0 );
611 if( frame_ok ) {
612 nl->state |= FL_PREV_OK;
613 if( framelen > 4 )
614 nl->in_stats.all_rx_number++;
615 } else
616 nl->state &= ~FL_PREV_OK,
617 change_level( dev ),
618 nl->in_stats.all_rx_number++,
619 nl->in_stats.bad_rx_number++;
620
621 return !frame_ok || framelen > 4;
622}
623
624
625static void
626send_frame( struct net_device *dev )
627{
628 struct net_local *nl = netdev_priv(dev);
629
630 u32 crc = CRC32_INITIAL;
631
632 if( nl->state & FL_NEED_RESEND ) {
633
634 /* if frame was sended but not ACK'ed - resend it */
635 if( nl->trans_errors ) {
636 --nl->trans_errors;
637 if( nl->framelen != 0 )
638 nl->in_stats.resend_tx_number++;
639 } else {
640 /* cannot xmit with many attempts */
641#ifdef CONFIG_SBNI_MULTILINE
642 if( (nl->state & FL_SLAVE) || nl->link )
643#endif
644 nl->state |= FL_LINE_DOWN;
645 drop_xmit_queue( dev );
646 goto do_send;
647 }
648 } else
649 nl->trans_errors = TR_ERROR_COUNT;
650
651 send_frame_header( dev, &crc );
652 nl->state |= FL_NEED_RESEND;
653 /*
654 * FL_NEED_RESEND will be cleared after ACK, but if empty
655 * frame sended then in prepare_to_send next frame
656 */
657
658
659 if( nl->framelen ) {
660 download_data( dev, &crc );
661 nl->in_stats.all_tx_number++;
662 nl->state |= FL_WAIT_ACK;
663 }
664
665 outsb( dev->base_addr + DAT, (u8 *)&crc, sizeof crc );
666
667do_send:
668 outb( inb( dev->base_addr + CSR0 ) & ~TR_REQ, dev->base_addr + CSR0 );
669
670 if( nl->tx_frameno )
671 /* next frame exists - we request card to send it */
672 outb( inb( dev->base_addr + CSR0 ) | TR_REQ,
673 dev->base_addr + CSR0 );
674}
675
676
677/*
678 * Write the frame data into adapter's buffer memory, and calculate CRC.
679 * Do padding if necessary.
680 */
681
682static void
683download_data( struct net_device *dev, u32 *crc_p )
684{
685 struct net_local *nl = netdev_priv(dev);
686 struct sk_buff *skb = nl->tx_buf_p;
687
688 unsigned len = min_t(unsigned int, skb->len - nl->outpos, nl->framelen);
689
690 outsb( dev->base_addr + DAT, skb->data + nl->outpos, len );
691 *crc_p = calc_crc32( *crc_p, skb->data + nl->outpos, len );
692
693 /* if packet too short we should write some more bytes to pad */
694 for( len = nl->framelen - len; len--; )
695 outb( 0, dev->base_addr + DAT ),
696 *crc_p = CRC32( 0, *crc_p );
697}
698
699
700static int
701upload_data( struct net_device *dev, unsigned framelen, unsigned frameno,
702 unsigned is_first, u32 crc )
703{
704 struct net_local *nl = netdev_priv(dev);
705
706 int frame_ok;
707
708 if( is_first )
709 nl->wait_frameno = frameno,
710 nl->inppos = 0;
711
712 if( nl->wait_frameno == frameno ) {
713
714 if( nl->inppos + framelen <= ETHER_MAX_LEN )
715 frame_ok = append_frame_to_pkt( dev, framelen, crc );
716
717 /*
718 * if CRC is right but framelen incorrect then transmitter
719 * error was occurred... drop entire packet
720 */
721 else if( (frame_ok = skip_tail( dev->base_addr, framelen, crc ))
722 != 0 )
723 nl->wait_frameno = 0,
724 nl->inppos = 0,
725#ifdef CONFIG_SBNI_MULTILINE
726 nl->master->stats.rx_errors++,
727 nl->master->stats.rx_missed_errors++;
728#else
729 dev->stats.rx_errors++,
730 dev->stats.rx_missed_errors++;
731#endif
732 /* now skip all frames until is_first != 0 */
733 } else
734 frame_ok = skip_tail( dev->base_addr, framelen, crc );
735
736 if( is_first && !frame_ok )
737 /*
738 * Frame has been broken, but we had already stored
739 * is_first... Drop entire packet.
740 */
741 nl->wait_frameno = 0,
742#ifdef CONFIG_SBNI_MULTILINE
743 nl->master->stats.rx_errors++,
744 nl->master->stats.rx_crc_errors++;
745#else
746 dev->stats.rx_errors++,
747 dev->stats.rx_crc_errors++;
748#endif
749
750 return frame_ok;
751}
752
753
754static inline void
755send_complete( struct net_device *dev )
756{
757 struct net_local *nl = netdev_priv(dev);
758
759#ifdef CONFIG_SBNI_MULTILINE
760 nl->master->stats.tx_packets++;
761 nl->master->stats.tx_bytes += nl->tx_buf_p->len;
762#else
763 dev->stats.tx_packets++;
764 dev->stats.tx_bytes += nl->tx_buf_p->len;
765#endif
766 dev_kfree_skb_irq( nl->tx_buf_p );
767
768 nl->tx_buf_p = NULL;
769
770 nl->outpos = 0;
771 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
772 nl->framelen = 0;
773}
774
775
776static void
777interpret_ack( struct net_device *dev, unsigned ack )
778{
779 struct net_local *nl = netdev_priv(dev);
780
781 if( ack == FRAME_SENT_OK ) {
782 nl->state &= ~FL_NEED_RESEND;
783
784 if( nl->state & FL_WAIT_ACK ) {
785 nl->outpos += nl->framelen;
786
787 if( --nl->tx_frameno )
788 nl->framelen = min_t(unsigned int,
789 nl->maxframe,
790 nl->tx_buf_p->len - nl->outpos);
791 else
792 send_complete( dev ),
793#ifdef CONFIG_SBNI_MULTILINE
794 netif_wake_queue( nl->master );
795#else
796 netif_wake_queue( dev );
797#endif
798 }
799 }
800
801 nl->state &= ~FL_WAIT_ACK;
802}
803
804
805/*
806 * Glue received frame with previous fragments of packet.
807 * Indicate packet when last frame would be accepted.
808 */
809
810static int
811append_frame_to_pkt( struct net_device *dev, unsigned framelen, u32 crc )
812{
813 struct net_local *nl = netdev_priv(dev);
814
815 u8 *p;
816
817 if( nl->inppos + framelen > ETHER_MAX_LEN )
818 return 0;
819
820 if( !nl->rx_buf_p && !(nl->rx_buf_p = get_rx_buf( dev )) )
821 return 0;
822
823 p = nl->rx_buf_p->data + nl->inppos;
824 insb( dev->base_addr + DAT, p, framelen );
825 if( calc_crc32( crc, p, framelen ) != CRC32_REMAINDER )
826 return 0;
827
828 nl->inppos += framelen - 4;
829 if( --nl->wait_frameno == 0 ) /* last frame received */
830 indicate_pkt( dev );
831
832 return 1;
833}
834
835
836/*
837 * Prepare to start output on adapter.
838 * Transmitter will be actually activated when marker is accepted.
839 */
840
841static void
842prepare_to_send( struct sk_buff *skb, struct net_device *dev )
843{
844 struct net_local *nl = netdev_priv(dev);
845
846 unsigned int len;
847
848 /* nl->tx_buf_p == NULL here! */
849 if( nl->tx_buf_p )
850 netdev_err(dev, "memory leak!\n");
851
852 nl->outpos = 0;
853 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
854
855 len = skb->len;
856 if( len < SBNI_MIN_LEN )
857 len = SBNI_MIN_LEN;
858
859 nl->tx_buf_p = skb;
860 nl->tx_frameno = DIV_ROUND_UP(len, nl->maxframe);
861 nl->framelen = len < nl->maxframe ? len : nl->maxframe;
862
863 outb( inb( dev->base_addr + CSR0 ) | TR_REQ, dev->base_addr + CSR0 );
864#ifdef CONFIG_SBNI_MULTILINE
865 nl->master->trans_start = jiffies;
866#else
867 dev->trans_start = jiffies;
868#endif
869}
870
871
872static void
873drop_xmit_queue( struct net_device *dev )
874{
875 struct net_local *nl = netdev_priv(dev);
876
877 if( nl->tx_buf_p )
878 dev_kfree_skb_any( nl->tx_buf_p ),
879 nl->tx_buf_p = NULL,
880#ifdef CONFIG_SBNI_MULTILINE
881 nl->master->stats.tx_errors++,
882 nl->master->stats.tx_carrier_errors++;
883#else
884 dev->stats.tx_errors++,
885 dev->stats.tx_carrier_errors++;
886#endif
887
888 nl->tx_frameno = 0;
889 nl->framelen = 0;
890 nl->outpos = 0;
891 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
892#ifdef CONFIG_SBNI_MULTILINE
893 netif_start_queue( nl->master );
894 nl->master->trans_start = jiffies;
895#else
896 netif_start_queue( dev );
897 dev->trans_start = jiffies;
898#endif
899}
900
901
902static void
903send_frame_header( struct net_device *dev, u32 *crc_p )
904{
905 struct net_local *nl = netdev_priv(dev);
906
907 u32 crc = *crc_p;
908 u32 len_field = nl->framelen + 6; /* CRC + frameno + reserved */
909 u8 value;
910
911 if( nl->state & FL_NEED_RESEND )
912 len_field |= FRAME_RETRY; /* non-first attempt... */
913
914 if( nl->outpos == 0 )
915 len_field |= FRAME_FIRST;
916
917 len_field |= (nl->state & FL_PREV_OK) ? FRAME_SENT_OK : FRAME_SENT_BAD;
918 outb( SBNI_SIG, dev->base_addr + DAT );
919
920 value = (u8) len_field;
921 outb( value, dev->base_addr + DAT );
922 crc = CRC32( value, crc );
923 value = (u8) (len_field >> 8);
924 outb( value, dev->base_addr + DAT );
925 crc = CRC32( value, crc );
926
927 outb( nl->tx_frameno, dev->base_addr + DAT );
928 crc = CRC32( nl->tx_frameno, crc );
929 outb( 0, dev->base_addr + DAT );
930 crc = CRC32( 0, crc );
931 *crc_p = crc;
932}
933
934
935/*
936 * if frame tail not needed (incorrect number or received twice),
937 * it won't store, but CRC will be calculated
938 */
939
940static int
941skip_tail( unsigned int ioaddr, unsigned int tail_len, u32 crc )
942{
943 while( tail_len-- )
944 crc = CRC32( inb( ioaddr + DAT ), crc );
945
946 return crc == CRC32_REMAINDER;
947}
948
949
950/*
951 * Preliminary checks if frame header is correct, calculates its CRC
952 * and split it to simple fields
953 */
954
955static int
956check_fhdr( u32 ioaddr, u32 *framelen, u32 *frameno, u32 *ack,
957 u32 *is_first, u32 *crc_p )
958{
959 u32 crc = *crc_p;
960 u8 value;
961
962 if( inb( ioaddr + DAT ) != SBNI_SIG )
963 return 0;
964
965 value = inb( ioaddr + DAT );
966 *framelen = (u32)value;
967 crc = CRC32( value, crc );
968 value = inb( ioaddr + DAT );
969 *framelen |= ((u32)value) << 8;
970 crc = CRC32( value, crc );
971
972 *ack = *framelen & FRAME_ACK_MASK;
973 *is_first = (*framelen & FRAME_FIRST) != 0;
974
975 if( (*framelen &= FRAME_LEN_MASK) < 6 ||
976 *framelen > SBNI_MAX_FRAME - 3 )
977 return 0;
978
979 value = inb( ioaddr + DAT );
980 *frameno = (u32)value;
981 crc = CRC32( value, crc );
982
983 crc = CRC32( inb( ioaddr + DAT ), crc ); /* reserved byte */
984 *framelen -= 2;
985
986 *crc_p = crc;
987 return 1;
988}
989
990
991static struct sk_buff *
992get_rx_buf( struct net_device *dev )
993{
994 /* +2 is to compensate for the alignment fixup below */
995 struct sk_buff *skb = dev_alloc_skb( ETHER_MAX_LEN + 2 );
996 if( !skb )
997 return NULL;
998
999 skb_reserve( skb, 2 ); /* Align IP on longword boundaries */
1000 return skb;
1001}
1002
1003
1004static void
1005indicate_pkt( struct net_device *dev )
1006{
1007 struct net_local *nl = netdev_priv(dev);
1008 struct sk_buff *skb = nl->rx_buf_p;
1009
1010 skb_put( skb, nl->inppos );
1011
1012#ifdef CONFIG_SBNI_MULTILINE
1013 skb->protocol = eth_type_trans( skb, nl->master );
1014 netif_rx( skb );
1015 ++nl->master->stats.rx_packets;
1016 nl->master->stats.rx_bytes += nl->inppos;
1017#else
1018 skb->protocol = eth_type_trans( skb, dev );
1019 netif_rx( skb );
1020 ++dev->stats.rx_packets;
1021 dev->stats.rx_bytes += nl->inppos;
1022#endif
1023 nl->rx_buf_p = NULL; /* protocol driver will clear this sk_buff */
1024}
1025
1026
1027/* -------------------------------------------------------------------------- */
1028
1029/*
1030 * Routine checks periodically wire activity and regenerates marker if
1031 * connect was inactive for a long time.
1032 */
1033
1034static void
1035sbni_watchdog( unsigned long arg )
1036{
1037 struct net_device *dev = (struct net_device *) arg;
1038 struct net_local *nl = netdev_priv(dev);
1039 struct timer_list *w = &nl->watchdog;
1040 unsigned long flags;
1041 unsigned char csr0;
1042
1043 spin_lock_irqsave( &nl->lock, flags );
1044
1045 csr0 = inb( dev->base_addr + CSR0 );
1046 if( csr0 & RC_CHK ) {
1047
1048 if( nl->timer_ticks ) {
1049 if( csr0 & (RC_RDY | BU_EMP) )
1050 /* receiving not active */
1051 nl->timer_ticks--;
1052 } else {
1053 nl->in_stats.timeout_number++;
1054 if( nl->delta_rxl )
1055 timeout_change_level( dev );
1056
1057 outb( *(u_char *)&nl->csr1 | PR_RES,
1058 dev->base_addr + CSR1 );
1059 csr0 = inb( dev->base_addr + CSR0 );
1060 }
1061 } else
1062 nl->state &= ~FL_LINE_DOWN;
1063
1064 outb( csr0 | RC_CHK, dev->base_addr + CSR0 );
1065
1066 init_timer( w );
1067 w->expires = jiffies + SBNI_TIMEOUT;
1068 w->data = arg;
1069 w->function = sbni_watchdog;
1070 add_timer( w );
1071
1072 spin_unlock_irqrestore( &nl->lock, flags );
1073}
1074
1075
1076static unsigned char rxl_tab[] = {
1077 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08,
1078 0x0a, 0x0c, 0x0f, 0x16, 0x18, 0x1a, 0x1c, 0x1f
1079};
1080
1081#define SIZE_OF_TIMEOUT_RXL_TAB 4
1082static unsigned char timeout_rxl_tab[] = {
1083 0x03, 0x05, 0x08, 0x0b
1084};
1085
1086/* -------------------------------------------------------------------------- */
1087
1088static void
1089card_start( struct net_device *dev )
1090{
1091 struct net_local *nl = netdev_priv(dev);
1092
1093 nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
1094 nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
1095 nl->state |= FL_PREV_OK;
1096
1097 nl->inppos = nl->outpos = 0;
1098 nl->wait_frameno = 0;
1099 nl->tx_frameno = 0;
1100 nl->framelen = 0;
1101
1102 outb( *(u_char *)&nl->csr1 | PR_RES, dev->base_addr + CSR1 );
1103 outb( EN_INT, dev->base_addr + CSR0 );
1104}
1105
1106/* -------------------------------------------------------------------------- */
1107
1108/* Receive level auto-selection */
1109
1110static void
1111change_level( struct net_device *dev )
1112{
1113 struct net_local *nl = netdev_priv(dev);
1114
1115 if( nl->delta_rxl == 0 ) /* do not auto-negotiate RxL */
1116 return;
1117
1118 if( nl->cur_rxl_index == 0 )
1119 nl->delta_rxl = 1;
1120 else if( nl->cur_rxl_index == 15 )
1121 nl->delta_rxl = -1;
1122 else if( nl->cur_rxl_rcvd < nl->prev_rxl_rcvd )
1123 nl->delta_rxl = -nl->delta_rxl;
1124
1125 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index += nl->delta_rxl ];
1126 inb( dev->base_addr + CSR0 ); /* needs for PCI cards */
1127 outb( *(u8 *)&nl->csr1, dev->base_addr + CSR1 );
1128
1129 nl->prev_rxl_rcvd = nl->cur_rxl_rcvd;
1130 nl->cur_rxl_rcvd = 0;
1131}
1132
1133
1134static void
1135timeout_change_level( struct net_device *dev )
1136{
1137 struct net_local *nl = netdev_priv(dev);
1138
1139 nl->cur_rxl_index = timeout_rxl_tab[ nl->timeout_rxl ];
1140 if( ++nl->timeout_rxl >= 4 )
1141 nl->timeout_rxl = 0;
1142
1143 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
1144 inb( dev->base_addr + CSR0 );
1145 outb( *(unsigned char *)&nl->csr1, dev->base_addr + CSR1 );
1146
1147 nl->prev_rxl_rcvd = nl->cur_rxl_rcvd;
1148 nl->cur_rxl_rcvd = 0;
1149}
1150
1151/* -------------------------------------------------------------------------- */
1152
1153/*
1154 * Open/initialize the board.
1155 */
1156
1157static int
1158sbni_open( struct net_device *dev )
1159{
1160 struct net_local *nl = netdev_priv(dev);
1161 struct timer_list *w = &nl->watchdog;
1162
1163 /*
1164 * For double ISA adapters within "common irq" mode, we have to
1165 * determine whether primary or secondary channel is initialized,
1166 * and set the irq handler only in first case.
1167 */
1168 if( dev->base_addr < 0x400 ) { /* ISA only */
1169 struct net_device **p = sbni_cards;
1170 for( ; *p && p < sbni_cards + SBNI_MAX_NUM_CARDS; ++p )
1171 if( (*p)->irq == dev->irq &&
1172 ((*p)->base_addr == dev->base_addr + 4 ||
1173 (*p)->base_addr == dev->base_addr - 4) &&
1174 (*p)->flags & IFF_UP ) {
1175
1176 ((struct net_local *) (netdev_priv(*p)))
1177 ->second = dev;
1178 netdev_notice(dev, "using shared irq with %s\n",
1179 (*p)->name);
1180 nl->state |= FL_SECONDARY;
1181 goto handler_attached;
1182 }
1183 }
1184
1185 if( request_irq(dev->irq, sbni_interrupt, IRQF_SHARED, dev->name, dev) ) {
1186 netdev_err(dev, "unable to get IRQ %d\n", dev->irq);
1187 return -EAGAIN;
1188 }
1189
1190handler_attached:
1191
1192 spin_lock( &nl->lock );
1193 memset( &dev->stats, 0, sizeof(struct net_device_stats) );
1194 memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
1195
1196 card_start( dev );
1197
1198 netif_start_queue( dev );
1199
1200 /* set timer watchdog */
1201 init_timer( w );
1202 w->expires = jiffies + SBNI_TIMEOUT;
1203 w->data = (unsigned long) dev;
1204 w->function = sbni_watchdog;
1205 add_timer( w );
1206
1207 spin_unlock( &nl->lock );
1208 return 0;
1209}
1210
1211
1212static int
1213sbni_close( struct net_device *dev )
1214{
1215 struct net_local *nl = netdev_priv(dev);
1216
1217 if( nl->second && nl->second->flags & IFF_UP ) {
1218 netdev_notice(dev, "Secondary channel (%s) is active!\n",
1219 nl->second->name);
1220 return -EBUSY;
1221 }
1222
1223#ifdef CONFIG_SBNI_MULTILINE
1224 if( nl->state & FL_SLAVE )
1225 emancipate( dev );
1226 else
1227 while( nl->link ) /* it's master device! */
1228 emancipate( nl->link );
1229#endif
1230
1231 spin_lock( &nl->lock );
1232
1233 nl->second = NULL;
1234 drop_xmit_queue( dev );
1235 netif_stop_queue( dev );
1236
1237 del_timer( &nl->watchdog );
1238
1239 outb( 0, dev->base_addr + CSR0 );
1240
1241 if( !(nl->state & FL_SECONDARY) )
1242 free_irq( dev->irq, dev );
1243 nl->state &= FL_SECONDARY;
1244
1245 spin_unlock( &nl->lock );
1246 return 0;
1247}
1248
1249
1250/*
1251 Valid combinations in CSR0 (for probing):
1252
1253 VALID_DECODER 0000,0011,1011,1010
1254
1255 ; 0 ; -
1256 TR_REQ ; 1 ; +
1257 TR_RDY ; 2 ; -
1258 TR_RDY TR_REQ ; 3 ; +
1259 BU_EMP ; 4 ; +
1260 BU_EMP TR_REQ ; 5 ; +
1261 BU_EMP TR_RDY ; 6 ; -
1262 BU_EMP TR_RDY TR_REQ ; 7 ; +
1263 RC_RDY ; 8 ; +
1264 RC_RDY TR_REQ ; 9 ; +
1265 RC_RDY TR_RDY ; 10 ; -
1266 RC_RDY TR_RDY TR_REQ ; 11 ; -
1267 RC_RDY BU_EMP ; 12 ; -
1268 RC_RDY BU_EMP TR_REQ ; 13 ; -
1269 RC_RDY BU_EMP TR_RDY ; 14 ; -
1270 RC_RDY BU_EMP TR_RDY TR_REQ ; 15 ; -
1271*/
1272
1273#define VALID_DECODER (2 + 8 + 0x10 + 0x20 + 0x80 + 0x100 + 0x200)
1274
1275
1276static int
1277sbni_card_probe( unsigned long ioaddr )
1278{
1279 unsigned char csr0;
1280
1281 csr0 = inb( ioaddr + CSR0 );
1282 if( csr0 != 0xff && csr0 != 0x00 ) {
1283 csr0 &= ~EN_INT;
1284 if( csr0 & BU_EMP )
1285 csr0 |= EN_INT;
1286
1287 if( VALID_DECODER & (1 << (csr0 >> 4)) )
1288 return 0;
1289 }
1290
1291 return -ENODEV;
1292}
1293
1294/* -------------------------------------------------------------------------- */
1295
1296static int
1297sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
1298{
1299 struct net_local *nl = netdev_priv(dev);
1300 struct sbni_flags flags;
1301 int error = 0;
1302
1303#ifdef CONFIG_SBNI_MULTILINE
1304 struct net_device *slave_dev;
1305 char slave_name[ 8 ];
1306#endif
1307
1308 switch( cmd ) {
1309 case SIOCDEVGETINSTATS :
1310 if (copy_to_user( ifr->ifr_data, &nl->in_stats,
1311 sizeof(struct sbni_in_stats) ))
1312 error = -EFAULT;
1313 break;
1314
1315 case SIOCDEVRESINSTATS :
1316 if (!capable(CAP_NET_ADMIN))
1317 return -EPERM;
1318 memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
1319 break;
1320
1321 case SIOCDEVGHWSTATE :
1322 flags.mac_addr = *(u32 *)(dev->dev_addr + 3);
1323 flags.rate = nl->csr1.rate;
1324 flags.slow_mode = (nl->state & FL_SLOW_MODE) != 0;
1325 flags.rxl = nl->cur_rxl_index;
1326 flags.fixed_rxl = nl->delta_rxl == 0;
1327
1328 if (copy_to_user( ifr->ifr_data, &flags, sizeof flags ))
1329 error = -EFAULT;
1330 break;
1331
1332 case SIOCDEVSHWSTATE :
1333 if (!capable(CAP_NET_ADMIN))
1334 return -EPERM;
1335
1336 spin_lock( &nl->lock );
1337 flags = *(struct sbni_flags*) &ifr->ifr_ifru;
1338 if( flags.fixed_rxl )
1339 nl->delta_rxl = 0,
1340 nl->cur_rxl_index = flags.rxl;
1341 else
1342 nl->delta_rxl = DEF_RXL_DELTA,
1343 nl->cur_rxl_index = DEF_RXL;
1344
1345 nl->csr1.rxl = rxl_tab[ nl->cur_rxl_index ];
1346 nl->csr1.rate = flags.rate;
1347 outb( *(u8 *)&nl->csr1 | PR_RES, dev->base_addr + CSR1 );
1348 spin_unlock( &nl->lock );
1349 break;
1350
1351#ifdef CONFIG_SBNI_MULTILINE
1352
1353 case SIOCDEVENSLAVE :
1354 if (!capable(CAP_NET_ADMIN))
1355 return -EPERM;
1356
1357 if (copy_from_user( slave_name, ifr->ifr_data, sizeof slave_name ))
1358 return -EFAULT;
1359 slave_dev = dev_get_by_name(&init_net, slave_name );
1360 if( !slave_dev || !(slave_dev->flags & IFF_UP) ) {
1361 netdev_err(dev, "trying to enslave non-active device %s\n",
1362 slave_name);
1363 return -EPERM;
1364 }
1365
1366 return enslave( dev, slave_dev );
1367
1368 case SIOCDEVEMANSIPATE :
1369 if (!capable(CAP_NET_ADMIN))
1370 return -EPERM;
1371
1372 return emancipate( dev );
1373
1374#endif /* CONFIG_SBNI_MULTILINE */
1375
1376 default :
1377 return -EOPNOTSUPP;
1378 }
1379
1380 return error;
1381}
1382
1383
1384#ifdef CONFIG_SBNI_MULTILINE
1385
1386static int
1387enslave( struct net_device *dev, struct net_device *slave_dev )
1388{
1389 struct net_local *nl = netdev_priv(dev);
1390 struct net_local *snl = netdev_priv(slave_dev);
1391
1392 if( nl->state & FL_SLAVE ) /* This isn't master or free device */
1393 return -EBUSY;
1394
1395 if( snl->state & FL_SLAVE ) /* That was already enslaved */
1396 return -EBUSY;
1397
1398 spin_lock( &nl->lock );
1399 spin_lock( &snl->lock );
1400
1401 /* append to list */
1402 snl->link = nl->link;
1403 nl->link = slave_dev;
1404 snl->master = dev;
1405 snl->state |= FL_SLAVE;
1406
1407 /* Summary statistics of MultiLine operation will be stored
1408 in master's counters */
1409 memset( &slave_dev->stats, 0, sizeof(struct net_device_stats) );
1410 netif_stop_queue( slave_dev );
1411 netif_wake_queue( dev ); /* Now we are able to transmit */
1412
1413 spin_unlock( &snl->lock );
1414 spin_unlock( &nl->lock );
1415 netdev_notice(dev, "slave device (%s) attached\n", slave_dev->name);
1416 return 0;
1417}
1418
1419
1420static int
1421emancipate( struct net_device *dev )
1422{
1423 struct net_local *snl = netdev_priv(dev);
1424 struct net_device *p = snl->master;
1425 struct net_local *nl = netdev_priv(p);
1426
1427 if( !(snl->state & FL_SLAVE) )
1428 return -EINVAL;
1429
1430 spin_lock( &nl->lock );
1431 spin_lock( &snl->lock );
1432 drop_xmit_queue( dev );
1433
1434 /* exclude from list */
1435 for(;;) { /* must be in list */
1436 struct net_local *t = netdev_priv(p);
1437 if( t->link == dev ) {
1438 t->link = snl->link;
1439 break;
1440 }
1441 p = t->link;
1442 }
1443
1444 snl->link = NULL;
1445 snl->master = dev;
1446 snl->state &= ~FL_SLAVE;
1447
1448 netif_start_queue( dev );
1449
1450 spin_unlock( &snl->lock );
1451 spin_unlock( &nl->lock );
1452
1453 dev_put( dev );
1454 return 0;
1455}
1456
1457#endif
1458
1459static void
1460set_multicast_list( struct net_device *dev )
1461{
1462 return; /* sbni always operate in promiscuos mode */
1463}
1464
1465
1466#ifdef MODULE
1467module_param_array(io, int, NULL, 0);
1468module_param_array(irq, int, NULL, 0);
1469module_param_array(baud, int, NULL, 0);
1470module_param_array(rxl, int, NULL, 0);
1471module_param_array(mac, int, NULL, 0);
1472module_param(skip_pci_probe, bool, 0);
1473
1474MODULE_LICENSE("GPL");
1475
1476
1477int __init init_module( void )
1478{
1479 struct net_device *dev;
1480 int err;
1481
1482 while( num < SBNI_MAX_NUM_CARDS ) {
1483 dev = alloc_netdev(sizeof(struct net_local),
1484 "sbni%d", sbni_devsetup);
1485 if( !dev)
1486 break;
1487
1488 sprintf( dev->name, "sbni%d", num );
1489
1490 err = sbni_init(dev);
1491 if (err) {
1492 free_netdev(dev);
1493 break;
1494 }
1495
1496 if( register_netdev( dev ) ) {
1497 release_region( dev->base_addr, SBNI_IO_EXTENT );
1498 free_netdev( dev );
1499 break;
1500 }
1501 }
1502
1503 return *sbni_cards ? 0 : -ENODEV;
1504}
1505
1506void
1507cleanup_module(void)
1508{
1509 int i;
1510
1511 for (i = 0; i < SBNI_MAX_NUM_CARDS; ++i) {
1512 struct net_device *dev = sbni_cards[i];
1513 if (dev != NULL) {
1514 unregister_netdev(dev);
1515 release_region(dev->base_addr, SBNI_IO_EXTENT);
1516 free_netdev(dev);
1517 }
1518 }
1519}
1520
1521#else /* MODULE */
1522
1523static int __init
1524sbni_setup( char *p )
1525{
1526 int n, parm;
1527
1528 if( *p++ != '(' )
1529 goto bad_param;
1530
1531 for( n = 0, parm = 0; *p && n < 8; ) {
1532 (*dest[ parm ])[ n ] = simple_strtol( p, &p, 0 );
1533 if( !*p || *p == ')' )
1534 return 1;
1535 if( *p == ';' )
1536 ++p, ++n, parm = 0;
1537 else if( *p++ != ',' )
1538 break;
1539 else
1540 if( ++parm >= 5 )
1541 break;
1542 }
1543bad_param:
1544 pr_err("Error in sbni kernel parameter!\n");
1545 return 0;
1546}
1547
1548__setup( "sbni=", sbni_setup );
1549
1550#endif /* MODULE */
1551
1552/* -------------------------------------------------------------------------- */
1553
1554#ifdef ASM_CRC
1555
1556static u32
1557calc_crc32( u32 crc, u8 *p, u32 len )
1558{
1559 register u32 _crc;
1560 _crc = crc;
1561
1562 __asm__ __volatile__ (
1563 "xorl %%ebx, %%ebx\n"
1564 "movl %2, %%esi\n"
1565 "movl %3, %%ecx\n"
1566 "movl $crc32tab, %%edi\n"
1567 "shrl $2, %%ecx\n"
1568 "jz 1f\n"
1569
1570 ".align 4\n"
1571 "0:\n"
1572 "movb %%al, %%bl\n"
1573 "movl (%%esi), %%edx\n"
1574 "shrl $8, %%eax\n"
1575 "xorb %%dl, %%bl\n"
1576 "shrl $8, %%edx\n"
1577 "xorl (%%edi,%%ebx,4), %%eax\n"
1578
1579 "movb %%al, %%bl\n"
1580 "shrl $8, %%eax\n"
1581 "xorb %%dl, %%bl\n"
1582 "shrl $8, %%edx\n"
1583 "xorl (%%edi,%%ebx,4), %%eax\n"
1584
1585 "movb %%al, %%bl\n"
1586 "shrl $8, %%eax\n"
1587 "xorb %%dl, %%bl\n"
1588 "movb %%dh, %%dl\n"
1589 "xorl (%%edi,%%ebx,4), %%eax\n"
1590
1591 "movb %%al, %%bl\n"
1592 "shrl $8, %%eax\n"
1593 "xorb %%dl, %%bl\n"
1594 "addl $4, %%esi\n"
1595 "xorl (%%edi,%%ebx,4), %%eax\n"
1596
1597 "decl %%ecx\n"
1598 "jnz 0b\n"
1599
1600 "1:\n"
1601 "movl %3, %%ecx\n"
1602 "andl $3, %%ecx\n"
1603 "jz 2f\n"
1604
1605 "movb %%al, %%bl\n"
1606 "shrl $8, %%eax\n"
1607 "xorb (%%esi), %%bl\n"
1608 "xorl (%%edi,%%ebx,4), %%eax\n"
1609
1610 "decl %%ecx\n"
1611 "jz 2f\n"
1612
1613 "movb %%al, %%bl\n"
1614 "shrl $8, %%eax\n"
1615 "xorb 1(%%esi), %%bl\n"
1616 "xorl (%%edi,%%ebx,4), %%eax\n"
1617
1618 "decl %%ecx\n"
1619 "jz 2f\n"
1620
1621 "movb %%al, %%bl\n"
1622 "shrl $8, %%eax\n"
1623 "xorb 2(%%esi), %%bl\n"
1624 "xorl (%%edi,%%ebx,4), %%eax\n"
1625 "2:\n"
1626 : "=a" (_crc)
1627 : "0" (_crc), "g" (p), "g" (len)
1628 : "bx", "cx", "dx", "si", "di"
1629 );
1630
1631 return _crc;
1632}
1633
1634#else /* ASM_CRC */
1635
1636static u32
1637calc_crc32( u32 crc, u8 *p, u32 len )
1638{
1639 while( len-- )
1640 crc = CRC32( *p++, crc );
1641
1642 return crc;
1643}
1644
1645#endif /* ASM_CRC */
1646
1647
1648static u32 crc32tab[] __attribute__ ((aligned(8))) = {
1649 0xD202EF8D, 0xA505DF1B, 0x3C0C8EA1, 0x4B0BBE37,
1650 0xD56F2B94, 0xA2681B02, 0x3B614AB8, 0x4C667A2E,
1651 0xDCD967BF, 0xABDE5729, 0x32D70693, 0x45D03605,
1652 0xDBB4A3A6, 0xACB39330, 0x35BAC28A, 0x42BDF21C,
1653 0xCFB5FFE9, 0xB8B2CF7F, 0x21BB9EC5, 0x56BCAE53,
1654 0xC8D83BF0, 0xBFDF0B66, 0x26D65ADC, 0x51D16A4A,
1655 0xC16E77DB, 0xB669474D, 0x2F6016F7, 0x58672661,
1656 0xC603B3C2, 0xB1048354, 0x280DD2EE, 0x5F0AE278,
1657 0xE96CCF45, 0x9E6BFFD3, 0x0762AE69, 0x70659EFF,
1658 0xEE010B5C, 0x99063BCA, 0x000F6A70, 0x77085AE6,
1659 0xE7B74777, 0x90B077E1, 0x09B9265B, 0x7EBE16CD,
1660 0xE0DA836E, 0x97DDB3F8, 0x0ED4E242, 0x79D3D2D4,
1661 0xF4DBDF21, 0x83DCEFB7, 0x1AD5BE0D, 0x6DD28E9B,
1662 0xF3B61B38, 0x84B12BAE, 0x1DB87A14, 0x6ABF4A82,
1663 0xFA005713, 0x8D076785, 0x140E363F, 0x630906A9,
1664 0xFD6D930A, 0x8A6AA39C, 0x1363F226, 0x6464C2B0,
1665 0xA4DEAE1D, 0xD3D99E8B, 0x4AD0CF31, 0x3DD7FFA7,
1666 0xA3B36A04, 0xD4B45A92, 0x4DBD0B28, 0x3ABA3BBE,
1667 0xAA05262F, 0xDD0216B9, 0x440B4703, 0x330C7795,
1668 0xAD68E236, 0xDA6FD2A0, 0x4366831A, 0x3461B38C,
1669 0xB969BE79, 0xCE6E8EEF, 0x5767DF55, 0x2060EFC3,
1670 0xBE047A60, 0xC9034AF6, 0x500A1B4C, 0x270D2BDA,
1671 0xB7B2364B, 0xC0B506DD, 0x59BC5767, 0x2EBB67F1,
1672 0xB0DFF252, 0xC7D8C2C4, 0x5ED1937E, 0x29D6A3E8,
1673 0x9FB08ED5, 0xE8B7BE43, 0x71BEEFF9, 0x06B9DF6F,
1674 0x98DD4ACC, 0xEFDA7A5A, 0x76D32BE0, 0x01D41B76,
1675 0x916B06E7, 0xE66C3671, 0x7F6567CB, 0x0862575D,
1676 0x9606C2FE, 0xE101F268, 0x7808A3D2, 0x0F0F9344,
1677 0x82079EB1, 0xF500AE27, 0x6C09FF9D, 0x1B0ECF0B,
1678 0x856A5AA8, 0xF26D6A3E, 0x6B643B84, 0x1C630B12,
1679 0x8CDC1683, 0xFBDB2615, 0x62D277AF, 0x15D54739,
1680 0x8BB1D29A, 0xFCB6E20C, 0x65BFB3B6, 0x12B88320,
1681 0x3FBA6CAD, 0x48BD5C3B, 0xD1B40D81, 0xA6B33D17,
1682 0x38D7A8B4, 0x4FD09822, 0xD6D9C998, 0xA1DEF90E,
1683 0x3161E49F, 0x4666D409, 0xDF6F85B3, 0xA868B525,
1684 0x360C2086, 0x410B1010, 0xD80241AA, 0xAF05713C,
1685 0x220D7CC9, 0x550A4C5F, 0xCC031DE5, 0xBB042D73,
1686 0x2560B8D0, 0x52678846, 0xCB6ED9FC, 0xBC69E96A,
1687 0x2CD6F4FB, 0x5BD1C46D, 0xC2D895D7, 0xB5DFA541,
1688 0x2BBB30E2, 0x5CBC0074, 0xC5B551CE, 0xB2B26158,
1689 0x04D44C65, 0x73D37CF3, 0xEADA2D49, 0x9DDD1DDF,
1690 0x03B9887C, 0x74BEB8EA, 0xEDB7E950, 0x9AB0D9C6,
1691 0x0A0FC457, 0x7D08F4C1, 0xE401A57B, 0x930695ED,
1692 0x0D62004E, 0x7A6530D8, 0xE36C6162, 0x946B51F4,
1693 0x19635C01, 0x6E646C97, 0xF76D3D2D, 0x806A0DBB,
1694 0x1E0E9818, 0x6909A88E, 0xF000F934, 0x8707C9A2,
1695 0x17B8D433, 0x60BFE4A5, 0xF9B6B51F, 0x8EB18589,
1696 0x10D5102A, 0x67D220BC, 0xFEDB7106, 0x89DC4190,
1697 0x49662D3D, 0x3E611DAB, 0xA7684C11, 0xD06F7C87,
1698 0x4E0BE924, 0x390CD9B2, 0xA0058808, 0xD702B89E,
1699 0x47BDA50F, 0x30BA9599, 0xA9B3C423, 0xDEB4F4B5,
1700 0x40D06116, 0x37D75180, 0xAEDE003A, 0xD9D930AC,
1701 0x54D13D59, 0x23D60DCF, 0xBADF5C75, 0xCDD86CE3,
1702 0x53BCF940, 0x24BBC9D6, 0xBDB2986C, 0xCAB5A8FA,
1703 0x5A0AB56B, 0x2D0D85FD, 0xB404D447, 0xC303E4D1,
1704 0x5D677172, 0x2A6041E4, 0xB369105E, 0xC46E20C8,
1705 0x72080DF5, 0x050F3D63, 0x9C066CD9, 0xEB015C4F,
1706 0x7565C9EC, 0x0262F97A, 0x9B6BA8C0, 0xEC6C9856,
1707 0x7CD385C7, 0x0BD4B551, 0x92DDE4EB, 0xE5DAD47D,
1708 0x7BBE41DE, 0x0CB97148, 0x95B020F2, 0xE2B71064,
1709 0x6FBF1D91, 0x18B82D07, 0x81B17CBD, 0xF6B64C2B,
1710 0x68D2D988, 0x1FD5E91E, 0x86DCB8A4, 0xF1DB8832,
1711 0x616495A3, 0x1663A535, 0x8F6AF48F, 0xF86DC419,
1712 0x660951BA, 0x110E612C, 0x88073096, 0xFF000000
1713};
1714