?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Import 2.3.10pre5
[davej-history.git] / drivers / net / sktr.c
bloba5e64eae9aadf24a5198ca3588d71f5e7294c2cc
1 /*
2 * sktr.c: A network driver for the SysKonnect Token Ring ISA/PCI Adapters.
3 *
4 * Written 1997 by Christoph Goos
5 *
6 * A fine result of the Linux Systems Network Architecture Project.
7 * http://samba.anu.edu.au/linux-sna/
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU Public License, incorporated herein by reference.
11 *
12 * This device driver works with the following SysKonnect adapters:
13 * - SysKonnect TR4/16(+) ISA (SK-4190)
14 * - SysKonnect TR4/16(+) PCI (SK-4590)
15 * - SysKonnect TR4/16 PCI (SK-4591)
16 *
17 * Sources:
18 * - The hardware related parts of this driver are take from
19 * the SysKonnect Token Ring driver for Windows NT.
20 * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
21 * driver, as well as the 'skeleton.c' driver by Donald Becker.
22 * - Also various other drivers in the linux source tree were taken
23 * as samples for some tasks.
24 *
25 * Maintainer(s):
26 * JS Jay Schulist jschlst@samba.anu.edu.au
27 * CG Christoph Goos cgoos@syskonnect.de
28 *
29 * Modification History:
30 * 29-Aug-97 CG Created
31 * 04-Apr-98 CG Fixed problems caused by tok_timer_check
32 * 10-Apr-98 CG Fixed lockups at cable disconnection
33 * 27-May-98 JS Formated to Linux Kernel Format
34 * 31-May-98 JS Hacked in PCI support
35 * 16-Jun-98 JS Modulized for multiple cards with one driver
36 *
37 * To do:
38 * 1. Selectable 16 Mbps or 4Mbps
39 * 2. Multi/Broadcast packet handling
40 *
41 */
42
43 static const char *version = "sktr.c: v1.01 08/29/97 by Christoph Goos\n";
44
45 #ifdef MODULE
46 #include <linux/module.h>
47 #include <linux/version.h>
48 #endif
49
50 #include <linux/kernel.h>
51 #include <linux/sched.h>
52 #include <linux/types.h>
53 #include <linux/fcntl.h>
54 #include <linux/interrupt.h>
55 #include <linux/ptrace.h>
56 #include <linux/ioport.h>
57 #include <linux/in.h>
58 #include <linux/malloc.h>
59 #include <linux/string.h>
60 #include <linux/time.h>
61 #include <asm/system.h>
62 #include <asm/bitops.h>
63 #include <asm/io.h>
64 #include <asm/dma.h>
65 #include <asm/irq.h>
66 #include <linux/errno.h>
67 #include <linux/init.h>
68 #include <linux/pci.h>
69
70 #include <linux/netdevice.h>
71 #include <linux/etherdevice.h>
72 #include <linux/skbuff.h>
73 #include <linux/trdevice.h>
74
75 #include "sktr.h" /* Our Stuff */
76 #include "sktr_firmware.h" /* SysKonnect adapter firmware */
77
78 /* A zero-terminated list of I/O addresses to be probed. */
79 static unsigned int sktr_portlist[] __initdata = {
80 0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,
81 0
82 };
83
84 /* A zero-terminated list of IRQs to be probed.
85 * Used again after initial probe for sktr_chipset_init, called from sktr_open.
86 */
87 static unsigned short sktr_irqlist[] = {
88 3, 5, 9, 10, 11, 12, 15,
89 0
90 };
91
92 /* A zero-terminated list of DMAs to be probed. */
93 static int sktr_dmalist[] __initdata = {
94 5, 6, 7,
95 0
96 };
97
98 /* Card names */
99 static char *pci_cardname = "SK NET TR 4/16 PCI\0";
100 static char *isa_cardname = "SK NET TR 4/16 ISA\0";
101 static char *AdapterName;
102
103 /* Use 0 for production, 1 for verification, 2 for debug, and
104 * 3 for very verbose debug.
105 */
106 #ifndef SKTR_DEBUG
107 #define SKTR_DEBUG 1
108 #endif
109 static unsigned int sktr_debug = SKTR_DEBUG;
110
111 /* The number of low I/O ports used by the tokencard. */
112 #define SKTR_IO_EXTENT 32
113
114 /* Index to functions, as function prototypes.
115 * Alphabetical by function name.
116 */
117
118 /* "B" */
119 static int sktr_bringup_diags(struct device *dev);
120 /* "C" */
121 static void sktr_cancel_tx_queue(struct net_local* tp);
122 static int sktr_chipset_init(struct device *dev);
123 static void sktr_chk_irq(struct device *dev);
124 static unsigned char sktr_chk_frame(struct device *dev, unsigned char *Addr);
125 static void sktr_chk_outstanding_cmds(struct device *dev);
126 static void sktr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
127 static unsigned char sktr_chk_ssb(struct net_local *tp, unsigned short IrqType);
128 static int sktr_close(struct device *dev);
129 static void sktr_cmd_status_irq(struct device *dev);
130 /* "D" */
131 static void sktr_disable_interrupts(struct device *dev);
132 static void sktr_dump(unsigned char *Data, int length);
133 /* "E" */
134 static void sktr_enable_interrupts(struct device *dev);
135 static void sktr_exec_cmd(struct device *dev, unsigned short Command);
136 static void sktr_exec_sifcmd(struct device *dev, unsigned int WriteValue);
137 /* "F" */
138 static unsigned char *sktr_fix_srouting(unsigned char *buf, short *FrameLen);
139 /* "G" */
140 static struct enet_statistics *sktr_get_stats(struct device *dev);
141 /* "H" */
142 static void sktr_hardware_send_packet(struct device *dev,
143 struct net_local* tp);
144 /* "I" */
145 static int sktr_init_adapter(struct device *dev);
146 static int sktr_init_card(struct device *dev);
147 static void sktr_init_ipb(struct net_local *tp);
148 static void sktr_init_net_local(struct device *dev);
149 static void sktr_init_opb(struct net_local *tp);
150 static void sktr_interrupt(int irq, void *dev_id, struct pt_regs *regs);
151 static int sktr_isa_chk_card(struct device *dev, int ioaddr);
152 static int sktr_isa_chk_ioaddr(int ioaddr);
153 /* "O" */
154 static int sktr_open(struct device *dev);
155 static void sktr_open_adapter(struct device *dev);
156 /* "P" */
157 static int sktr_pci_chk_card(struct device *dev);
158 int sktr_probe(struct device *dev);
159 static int sktr_probe1(struct device *dev, int ioaddr);
160 /* "R" */
161 static void sktr_rcv_status_irq(struct device *dev);
162 static void sktr_read_addr(struct device *dev, unsigned char *Address);
163 static void sktr_read_ptr(struct device *dev);
164 static void sktr_read_ram(struct device *dev, unsigned char *Data,
165 unsigned short Address, int Length);
166 static int sktr_reset_adapter(struct device *dev);
167 static void sktr_reset_interrupt(struct device *dev);
168 static void sktr_ring_status_irq(struct device *dev);
169 /* "S" */
170 static int sktr_send_packet(struct sk_buff *skb, struct device *dev);
171 static void sktr_set_multicast_list(struct device *dev);
172 /* "T" */
173 static void sktr_timer_chk(unsigned long data);
174 static void sktr_timer_end_wait(unsigned long data);
175 static void sktr_tx_status_irq(struct device *dev);
176 /* "U" */
177 static void sktr_update_rcv_stats(struct net_local *tp,
178 unsigned char DataPtr[], unsigned int Length);
179 /* "W" */
180 static void sktr_wait(unsigned long time);
181 static void sktr_write_rpl_status(RPL *rpl, unsigned int Status);
182 static void sktr_write_tpl_status(TPL *tpl, unsigned int Status);
183
184 /*
185 * Check for a network adapter of this type, and return '0' if one exists.
186 * If dev->base_addr == 0, probe all likely locations.
187 * If dev->base_addr == 1, always return failure.
188 */
189 __initfunc(int sktr_probe(struct device *dev))
190 {
191 int i;
192 int base_addr = dev ? dev->base_addr : 0;
193
194 if(base_addr > 0x1ff) /* Check a single specified location. */
195 return (sktr_probe1(dev, base_addr));
196 else if(base_addr != 0) /* Don't probe at all. */
197 return (-ENXIO);
198
199 for(i = 0; sktr_portlist[i]; i++)
200 {
201 int ioaddr = sktr_portlist[i];
202 if(check_region(ioaddr, SKTR_IO_EXTENT))
203 continue;
204 if(sktr_probe1(dev, ioaddr))
205 {
206 #ifndef MODULE
207 tr_freedev(dev);
208 #endif
209 }
210 else
211 return (0);
212 }
213
214 return (-ENODEV);
215 }
216
217 /*
218 * Detect and setup the PCI SysKonnect TR cards in slot order.
219 */
220 __initfunc(static int sktr_pci_chk_card(struct device *dev))
221 {
222 static int pci_index = 0;
223 unsigned char pci_bus, pci_device_fn;
224
225 if(!pci_present())
226 return (-1); /* No PCI present. */
227
228 for(; pci_index < 0xff; pci_index++)
229 {
230 unsigned int pci_irq_line;
231 struct pci_dev *pdev;
232 unsigned short pci_command, new_command, vendor, device;
233 unsigned int pci_ioaddr;
234
235 if(pcibios_find_class(PCI_CLASS_NETWORK_TOKEN_RING << 8,
236 pci_index, &pci_bus, &pci_device_fn)
237 != PCIBIOS_SUCCESSFUL)
238 {
239 break;
240 }
241
242 pcibios_read_config_word(pci_bus, pci_device_fn,
243 PCI_VENDOR_ID, &vendor);
244 pcibios_read_config_word(pci_bus, pci_device_fn,
245 PCI_DEVICE_ID, &device);
246
247 pdev = pci_find_slot(pci_bus, pci_device_fn);
248 pci_irq_line = pdev->irq;
249 pci_ioaddr = pdev->base_address[0];
250
251 pcibios_read_config_word(pci_bus, pci_device_fn,
252 PCI_COMMAND, &pci_command);
253
254 /* Remove I/O space marker in bit 0. */
255 pci_ioaddr &= ~3;
256
257 if(vendor != PCI_VENDOR_ID_SK)
258 continue;
259 if(device != PCI_DEVICE_ID_SK_TR)
260 continue;
261 if(check_region(pci_ioaddr, SKTR_IO_EXTENT))
262 continue;
263 request_region(pci_ioaddr, SKTR_IO_EXTENT, pci_cardname);
264 if(request_irq(pdev->irq, sktr_interrupt, SA_SHIRQ,
265 pci_cardname, dev))
266 return (-ENODEV); /* continue; ?? */
267
268 AdapterName = pci_cardname;
269
270 new_command = (pci_command|PCI_COMMAND_MASTER|PCI_COMMAND_IO);
271
272 if(pci_command != new_command)
273 {
274 printk("The PCI BIOS has not enabled this"
275 "device! Updating PCI command %4.4x->%4.4x.\n",
276 pci_command, new_command);
277 pcibios_write_config_word(pci_bus, pci_device_fn,
278 PCI_COMMAND, new_command);
279 }
280
281 /* At this point we have found a valid PCI TR card. */
282 dev->base_addr = pci_ioaddr;
283 dev->irq = pci_irq_line;
284 dev->dma = 0;
285
286 printk("%s: %s found at %#4x, using IRQ %d.\n",
287 dev->name, AdapterName, pci_ioaddr, dev->irq);
288
289 return (0);
290 }
291
292 return (-1);
293 }
294
295 /*
296 * Detect and setup the ISA SysKonnect TR cards.
297 */
298 __initfunc(static int sktr_isa_chk_card(struct device *dev, int ioaddr))
299 {
300 int i, err;
301 unsigned long flags;
302
303 err = sktr_isa_chk_ioaddr(ioaddr);
304 if(err < 0)
305 return (-ENODEV);
306
307 if(virt_to_bus((void*)((unsigned long)dev->priv+sizeof(struct net_local)))
308 > ISA_MAX_ADDRESS)
309 {
310 printk("%s: Memory not accessible for DMA\n", dev->name);
311 kfree(dev->priv);
312 return (-EAGAIN);
313 }
314
315 AdapterName = isa_cardname;
316
317 /* Grab the region so that no one else tries to probe our ioports. */
318 request_region(ioaddr, SKTR_IO_EXTENT, AdapterName);
319 dev->base_addr = ioaddr;
320
321 /* Autoselect IRQ and DMA if dev->irq == 0 */
322 if(dev->irq == 0)
323 {
324 for(i = 0; sktr_irqlist[i] != 0; i++)
325 {
326 dev->irq = sktr_irqlist[i];
327 err = request_irq(dev->irq, &sktr_interrupt, 0, AdapterName, dev);
328 if(!err)
329 break;
330 }
331
332 if(sktr_irqlist[i] == 0)
333 {
334 printk("%s: AutoSelect no IRQ available\n", dev->name);
335 return (-EAGAIN);
336 }
337 }
338 else
339 {
340 err = request_irq(dev->irq, &sktr_interrupt, 0, AdapterName, dev);
341 if(err)
342 {
343 printk("%s: Selected IRQ not available\n", dev->name);
344 return (-EAGAIN);
345 }
346 }
347
348 /* Always allocate the DMA channel after IRQ and clean up on failure */
349 if(dev->dma == 0)
350 {
351 for(i = 0; sktr_dmalist[i] != 0; i++)
352 {
353 dev->dma = sktr_dmalist[i];
354 err = request_dma(dev->dma, AdapterName);
355 if(!err)
356 break;
357 }
358
359 if(dev->dma == 0)
360 {
361 printk("%s: AutoSelect no DMA available\n", dev->name);
362 free_irq(dev->irq, NULL);
363 return (-EAGAIN);
364 }
365 }
366 else
367 {
368 err = request_dma(dev->dma, AdapterName);
369 if(err)
370 {
371 printk("%s: Selected DMA not available\n", dev->name);
372 free_irq(dev->irq, NULL);
373 return (-EAGAIN);
374 }
375 }
376
377 flags=claim_dma_lock();
378 disable_dma(dev->dma);
379 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
380 enable_dma(dev->dma);
381 release_dma_lock(flags);
382
383 printk("%s: %s found at %#4x, using IRQ %d and DMA %d.\n",
384 dev->name, AdapterName, ioaddr, dev->irq, dev->dma);
385
386 return (0);
387 }
388
389 __initfunc(static int sktr_probe1(struct device *dev, int ioaddr))
390 {
391 static unsigned version_printed = 0;
392 struct net_local *tp;
393 int err;
394
395 if(sktr_debug && version_printed++ == 0)
396 printk("%s", version);
397
398 #ifndef MODULE
399 dev = init_trdev(dev, 0);
400 if(dev == NULL)
401 return (-ENOMEM);
402 #endif
403
404 err = sktr_pci_chk_card(dev);
405 if(err < 0)
406 {
407 err = sktr_isa_chk_card(dev, ioaddr);
408 if(err < 0)
409 return (-ENODEV);
410 }
411
412 /* Setup this devices private information structure */
413 tp = (struct net_local *)kmalloc(sizeof(struct net_local), GFP_KERNEL | GFP_DMA);
414 if(tp == NULL)
415 return (-ENOMEM);
416 memset(tp, 0, sizeof(struct net_local));
417 init_waitqueue_head(&tp->wait_for_tok_int);
418
419 dev->priv = tp;
420 dev->init = sktr_init_card;
421 dev->open = sktr_open;
422 dev->stop = sktr_close;
423 dev->hard_start_xmit = sktr_send_packet;
424 dev->get_stats = sktr_get_stats;
425 dev->set_multicast_list = &sktr_set_multicast_list;
426
427 return (0);
428 }
429
430 /* Dummy function */
431 __initfunc(static int sktr_init_card(struct device *dev))
432 {
433 if(sktr_debug > 3)
434 printk("%s: sktr_init_card\n", dev->name);
435
436 return (0);
437 }
438
439 /*
440 * This function tests if an adapter is really installed at the
441 * given I/O address. Return negative if no adapter at IO addr.
442 */
443 __initfunc(static int sktr_isa_chk_ioaddr(int ioaddr))
444 {
445 unsigned char old, chk1, chk2;
446
447 old = inb(ioaddr + SIFADR); /* Get the old SIFADR value */
448
449 chk1 = 0; /* Begin with check value 0 */
450 do {
451 /* Write new SIFADR value */
452 outb(chk1, ioaddr + SIFADR);
453
454 /* Read, invert and write */
455 chk2 = inb(ioaddr + SIFADD);
456 chk2 ^= 0x0FE;
457 outb(chk2, ioaddr + SIFADR);
458
459 /* Read, invert and compare */
460 chk2 = inb(ioaddr + SIFADD);
461 chk2 ^= 0x0FE;
462
463 if(chk1 != chk2)
464 return (-1); /* No adapter */
465
466 chk1 -= 2;
467 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
468
469 /* Restore the SIFADR value */
470 outb(old, ioaddr + SIFADR);
471
472 return (0);
473 }
474
475 /*
476 * Open/initialize the board. This is called sometime after
477 * booting when the 'ifconfig' program is run.
478 *
479 * This routine should set everything up anew at each open, even
480 * registers that "should" only need to be set once at boot, so that
481 * there is non-reboot way to recover if something goes wrong.
482 */
483 static int sktr_open(struct device *dev)
484 {
485 struct net_local *tp = (struct net_local *)dev->priv;
486 int err;
487
488 /* Reset the hardware here. Don't forget to set the station address. */
489 err = sktr_chipset_init(dev);
490 if(err)
491 {
492 printk(KERN_INFO "%s: Chipset initialization error\n",
493 dev->name);
494 return (-1);
495 }
496
497 dev->addr_len = 6;
498 sktr_read_addr(dev, (unsigned char*)dev->dev_addr);
499
500 init_timer(&tp->timer);
501 tp->timer.expires = jiffies + 30*HZ;
502 tp->timer.function = sktr_timer_end_wait;
503 tp->timer.data = (unsigned long)dev;
504 tp->timer.next = NULL;
505 tp->timer.prev = NULL;
506 add_timer(&tp->timer);
507
508 sktr_read_ptr(dev);
509 sktr_enable_interrupts(dev);
510 sktr_open_adapter(dev);
511
512 dev->tbusy = 0;
513 dev->interrupt = 0;
514 dev->start = 0;
515
516 /* Wait for interrupt from hardware. If interrupt does not come,
517 * there will be a timeout from the timer.
518 */
519 tp->Sleeping = 1;
520 interruptible_sleep_on(&tp->wait_for_tok_int);
521 del_timer(&tp->timer);
522
523 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
524 if(tp->AdapterVirtOpenFlag == 0)
525 {
526 sktr_disable_interrupts(dev);
527 return (-1);
528 }
529
530 dev->start = 1;
531
532 tp->StartTime = jiffies;
533
534 /* Start function control timer */
535 tp->timer.expires = jiffies + 2*HZ;
536 tp->timer.function = sktr_timer_chk;
537 tp->timer.data = (unsigned long)dev;
538 add_timer(&tp->timer);
539
540 #ifdef MODULE
541 MOD_INC_USE_COUNT;
542 #endif
543
544 return (0);
545 }
546
547 /*
548 * Timeout function while waiting for event
549 */
550 static void sktr_timer_end_wait(unsigned long data)
551 {
552 struct device *dev = (struct device*)data;
553 struct net_local *tp = (struct net_local *)dev->priv;
554
555 if(tp->Sleeping)
556 {
557 tp->Sleeping = 0;
558 wake_up_interruptible(&tp->wait_for_tok_int);
559 }
560
561 return;
562 }
563
564 /*
565 * Initialize the chipset
566 */
567 static int sktr_chipset_init(struct device *dev)
568 {
569 struct net_local *tp = (struct net_local *)dev->priv;
570 unsigned char PosReg, Tmp;
571 int i, err;
572
573 sktr_init_ipb(tp);
574 sktr_init_opb(tp);
575 sktr_init_net_local(dev);
576
577 /* Set pos register: selects irq and dma channel.
578 * Only for ISA bus adapters.
579 */
580 if(dev->dma > 0)
581 {
582 PosReg = 0;
583 for(i = 0; sktr_irqlist[i] != 0; i++)
584 {
585 if(sktr_irqlist[i] == dev->irq)
586 break;
587 }
588
589 /* Choose default cycle time, 500 nsec */
590 PosReg |= CYCLE_TIME << 2;
591 PosReg |= i << 4;
592 i = dev->dma - 5;
593 PosReg |= i;
594
595 if(tp->DataRate == SPEED_4)
596 PosReg |= LINE_SPEED_BIT;
597 else
598 PosReg &= ~LINE_SPEED_BIT;
599
600 outb(PosReg, dev->base_addr + POSREG);
601 Tmp = inb(dev->base_addr + POSREG);
602 if((Tmp & ~CYCLE_TIME) != (PosReg & ~CYCLE_TIME))
603 printk(KERN_INFO "%s: POSREG error\n", dev->name);
604 }
605
606 err = sktr_reset_adapter(dev);
607 if(err < 0)
608 return (-1);
609
610 err = sktr_bringup_diags(dev);
611 if(err < 0)
612 return (-1);
613
614 err = sktr_init_adapter(dev);
615 if(err < 0)
616 return (-1);
617
618 return (0);
619 }
620
621 /*
622 * Initializes the net_local structure.
623 */
624 static void sktr_init_net_local(struct device *dev)
625 {
626 struct net_local *tp = (struct net_local *)dev->priv;
627 int i;
628
629 tp->scb.CMD = 0;
630 tp->scb.Parm[0] = 0;
631 tp->scb.Parm[1] = 0;
632
633 tp->ssb.STS = 0;
634 tp->ssb.Parm[0] = 0;
635 tp->ssb.Parm[1] = 0;
636 tp->ssb.Parm[2] = 0;
637
638 tp->CMDqueue = 0;
639
640 tp->AdapterOpenFlag = 0;
641 tp->AdapterVirtOpenFlag = 0;
642 tp->ScbInUse = 0;
643 tp->OpenCommandIssued = 0;
644 tp->ReOpenInProgress = 0;
645 tp->HaltInProgress = 0;
646 tp->TransmitHaltScheduled = 0;
647 tp->LobeWireFaultLogged = 0;
648 tp->LastOpenStatus = 0;
649 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
650
651 skb_queue_head_init(&tp->SendSkbQueue);
652 tp->QueueSkb = MAX_TX_QUEUE;
653
654 /* Create circular chain of transmit lists */
655 for (i = 0; i < TPL_NUM; i++)
656 {
657 tp->Tpl[i].NextTPLAddr = htonl((unsigned long) virt_to_bus(&tp->Tpl[(i+1) % TPL_NUM]));
658 tp->Tpl[i].Status = 0;
659 tp->Tpl[i].FrameSize = 0;
660 tp->Tpl[i].FragList[0].DataCount = 0;
661 tp->Tpl[i].FragList[0].DataAddr = 0;
662 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
663 tp->Tpl[i].MData = NULL;
664 tp->Tpl[i].TPLIndex = i;
665 tp->Tpl[i].BusyFlag = 0;
666 }
667
668 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
669
670 /* Create circular chain of receive lists */
671 for (i = 0; i < RPL_NUM; i++)
672 {
673 tp->Rpl[i].NextRPLAddr = htonl((unsigned long) virt_to_bus(&tp->Rpl[(i+1) % RPL_NUM]));
674 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
675 tp->Rpl[i].FrameSize = 0;
676 tp->Rpl[i].FragList[0].DataCount = SWAPB(tp->MaxPacketSize);
677
678 /* Alloc skb and point adapter to data area */
679 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
680
681 /* skb == NULL ? then use local buffer */
682 if(tp->Rpl[i].Skb == NULL)
683 {
684 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
685 tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[i]));
686 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
687 }
688 else /* SKB != NULL */
689 {
690 tp->Rpl[i].Skb->dev = dev;
691 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
692
693 /* data unreachable for DMA ? then use local buffer */
694 if(virt_to_bus(tp->Rpl[i].Skb->data) + tp->MaxPacketSize > ISA_MAX_ADDRESS)
695 {
696 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
697 tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[i]));
698 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
699 }
700 else /* DMA directly in skb->data */
701 {
702 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
703 tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->Rpl[i].Skb->data));
704 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
705 }
706 }
707
708 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
709 tp->Rpl[i].RPLIndex = i;
710 }
711
712 tp->RplHead = &tp->Rpl[0];
713 tp->RplTail = &tp->Rpl[RPL_NUM-1];
714 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
715
716 return;
717 }
718
719 /*
720 * Initializes the initialisation parameter block.
721 */
722 static void sktr_init_ipb(struct net_local *tp)
723 {
724 tp->ipb.Init_Options = BURST_MODE;
725 tp->ipb.CMD_Status_IV = 0;
726 tp->ipb.TX_IV = 0;
727 tp->ipb.RX_IV = 0;
728 tp->ipb.Ring_Status_IV = 0;
729 tp->ipb.SCB_Clear_IV = 0;
730 tp->ipb.Adapter_CHK_IV = 0;
731 tp->ipb.RX_Burst_Size = BURST_SIZE;
732 tp->ipb.TX_Burst_Size = BURST_SIZE;
733 tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
734 tp->ipb.SCB_Addr = 0;
735 tp->ipb.SSB_Addr = 0;
736
737 return;
738 }
739
740 /*
741 * Initializes the open parameter block.
742 */
743 static void sktr_init_opb(struct net_local *tp)
744 {
745 unsigned long Addr;
746 unsigned short RplSize = RPL_SIZE;
747 unsigned short TplSize = TPL_SIZE;
748 unsigned short BufferSize = BUFFER_SIZE;
749
750 tp->ocpl.OPENOptions = 0;
751 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
752 tp->ocpl.OPENOptions |= PAD_ROUTING_FIELD;
753 tp->ocpl.FullDuplex = 0;
754 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
755
756 /* Fixme: If mac address setable:
757 * for (i=0; i<LENGTH_OF_ADDRESS; i++)
758 * mac->Vam->ocpl.NodeAddr[i] = mac->CurrentAddress[i];
759 */
760
761 tp->ocpl.GroupAddr = 0;
762 tp->ocpl.FunctAddr = 0;
763 tp->ocpl.RxListSize = SWAPB(RplSize);
764 tp->ocpl.TxListSize = SWAPB(TplSize);
765 tp->ocpl.BufSize = SWAPB(BufferSize);
766 tp->ocpl.Reserved = 0;
767 tp->ocpl.TXBufMin = TX_BUF_MIN;
768 tp->ocpl.TXBufMax = TX_BUF_MAX;
769
770 Addr = htonl(virt_to_bus(tp->ProductID));
771
772 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
773 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
774
775 return;
776 }
777
778 /*
779 * Send OPEN command to adapter
780 */
781 static void sktr_open_adapter(struct device *dev)
782 {
783 struct net_local *tp = (struct net_local *)dev->priv;
784
785 if(tp->OpenCommandIssued)
786 return;
787
788 tp->OpenCommandIssued = 1;
789 sktr_exec_cmd(dev, OC_OPEN);
790
791 return;
792 }
793
794 /*
795 * Clear the adapter's interrupt flag. Clear system interrupt enable
796 * (SINTEN): disable adapter to system interrupts.
797 */
798 static void sktr_disable_interrupts(struct device *dev)
799 {
800 outb(0, dev->base_addr + SIFACL);
801
802 return;
803 }
804
805 /*
806 * Set the adapter's interrupt flag. Set system interrupt enable
807 * (SINTEN): enable adapter to system interrupts.
808 */
809 static void sktr_enable_interrupts(struct device *dev)
810 {
811 outb(ACL_SINTEN, dev->base_addr + SIFACL);
812
813 return;
814 }
815
816 /*
817 * Put command in command queue, try to execute it.
818 */
819 static void sktr_exec_cmd(struct device *dev, unsigned short Command)
820 {
821 struct net_local *tp = (struct net_local *)dev->priv;
822
823 tp->CMDqueue |= Command;
824 sktr_chk_outstanding_cmds(dev);
825
826 return;
827 }
828
829 /*
830 * Linux always gives 18 byte of source routing information in the frame header.
831 * But the length field can indicate shorter length. Then cut header
832 * appropriate.
833 */
834 static unsigned char *sktr_fix_srouting(unsigned char *buf, short *FrameLen)
835 {
836 struct trh_hdr *trh = (struct trh_hdr *)buf;
837 int len;
838
839 if(buf[8] & TR_RII)
840 {
841 trh->rcf &= ~SWAPB((unsigned short) TR_RCF_LONGEST_FRAME_MASK);
842 trh->rcf |= SWAPB((unsigned short) TR_RCF_FRAME4K);
843 len = (SWAPB(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
844 if(len < 18)
845 {
846 memcpy(&buf[18-len],buf,sizeof(struct trh_hdr)-18+len);
847 *FrameLen -= (18 - len);
848 }
849 return (&buf[18-len]);
850 }
851
852 return (buf);
853 }
854
855 /*
856 * Gets skb from system, queues it and checks if it can be sent
857 */
858 static int sktr_send_packet(struct sk_buff *skb, struct device *dev)
859 {
860 struct net_local *tp = (struct net_local *)dev->priv;
861
862 if(dev->tbusy)
863 {
864 /*
865 * If we get here, some higher level has decided we are broken.
866 * There should really be a "kick me" function call instead.
867 *
868 * Resetting the token ring adapter takes a long time so just
869 * fake transmission time and go on trying. Our own timeout
870 * routine is in sktr_timer_chk()
871 */
872 dev->tbusy = 0;
873 dev->trans_start = jiffies;
874 return (1);
875 }
876
877 /*
878 * If some higher layer thinks we've missed an tx-done interrupt we
879 * are passed NULL.
880 */
881 if(skb == NULL)
882 return (0);
883
884 /*
885 * Block a timer-based transmit from overlapping. This could better be
886 * done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
887 */
888 if(test_and_set_bit(0, (void*)&dev->tbusy) != 0)
889 {
890 printk("%s: Transmitter access conflict.\n", dev->name);
891 return (1);
892 }
893
894 if(tp->QueueSkb == 0)
895 return (1); /* Return with tbusy set: queue full */
896
897 tp->QueueSkb--;
898 skb_queue_tail(&tp->SendSkbQueue, skb);
899 sktr_hardware_send_packet(dev, tp);
900 if(tp->QueueSkb > 0)
901 dev->tbusy = 0;
902
903 return (0);
904 }
905
906 /*
907 * Move frames from internal skb queue into adapter tx queue
908 */
909 static void sktr_hardware_send_packet(struct device *dev, struct net_local* tp)
910 {
911 TPL *tpl;
912 short length;
913 unsigned char *buf, *newbuf;
914 struct sk_buff *skb;
915 int i;
916
917 for(;;)
918 {
919 /* Try to get a free TPL from the chain.
920 *
921 * NOTE: We *must* always leave one unused TPL in the chain,
922 * because otherwise the adapter might send frames twice.
923 */
924 if(tp->TplFree->NextTPLPtr->BusyFlag) /* No free TPL */
925 {
926 printk(KERN_INFO "%s: No free TPL\n", dev->name);
927 return;
928 }
929
930 /* Send first buffer from queue */
931 skb = skb_dequeue(&tp->SendSkbQueue);
932 if(skb == NULL)
933 return;
934
935 tp->QueueSkb++;
936 /* Is buffer reachable for Busmaster-DMA? */
937 if(virt_to_bus((void*)(((long) skb->data) + skb->len))
938 > ISA_MAX_ADDRESS)
939 {
940 /* Copy frame to local buffer */
941 i = tp->TplFree->TPLIndex;
942 length = skb->len;
943 buf = tp->LocalTxBuffers[i];
944 memcpy(buf, skb->data, length);
945 newbuf = sktr_fix_srouting(buf, &length);
946 }
947 else
948 {
949 /* Send direct from skb->data */
950 length = skb->len;
951 newbuf = sktr_fix_srouting(skb->data, &length);
952 }
953
954 /* Source address in packet? */
955 sktr_chk_src_addr(newbuf, dev->dev_addr);
956
957 tp->LastSendTime = jiffies;
958 tpl = tp->TplFree; /* Get the "free" TPL */
959 tpl->BusyFlag = 1; /* Mark TPL as busy */
960 tp->TplFree = tpl->NextTPLPtr;
961
962 /* Save the skb for delayed return of skb to system */
963 tpl->Skb = skb;
964 tpl->FragList[0].DataCount = (unsigned short) SWAPB(length);
965 tpl->FragList[0].DataAddr = htonl(virt_to_bus(newbuf));
966
967 /* Write the data length in the transmit list. */
968 tpl->FrameSize = (unsigned short) SWAPB(length);
969 tpl->MData = newbuf;
970
971 /* Transmit the frame and set the status values. */
972 sktr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
973 | TX_END_FRAME | TX_PASS_SRC_ADDR
974 | TX_FRAME_IRQ);
975
976 /* Let adapter send the frame. */
977 sktr_exec_sifcmd(dev, CMD_TX_VALID);
978 }
979
980 return;
981 }
982
983 /*
984 * Write the given value to the 'Status' field of the specified TPL.
985 * NOTE: This function should be used whenever the status of any TPL must be
986 * modified by the driver, because the compiler may otherwise change the
987 * order of instructions such that writing the TPL status may be executed at
988 * an undesireable time. When this function is used, the status is always
989 * written when the function is called.
990 */
991 static void sktr_write_tpl_status(TPL *tpl, unsigned int Status)
992 {
993 tpl->Status = Status;
994 }
995
996 static void sktr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
997 {
998 unsigned char SRBit;
999
1000 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
1001 return;
1002 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
1003 return;
1004
1005 SRBit = frame[8] & 0x80;
1006 memcpy(&frame[8], hw_addr, 6);
1007 frame[8] |= SRBit;
1008
1009 return;
1010 }
1011
1012 /*
1013 * The timer routine: Check if adapter still open and working, reopen if not.
1014 */
1015 static void sktr_timer_chk(unsigned long data)
1016 {
1017 struct device *dev = (struct device*)data;
1018 struct net_local *tp = (struct net_local*)dev->priv;
1019
1020 if(tp->HaltInProgress)
1021 return;
1022
1023 sktr_chk_outstanding_cmds(dev);
1024 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
1025 && (tp->QueueSkb < MAX_TX_QUEUE || tp->TplFree != tp->TplBusy))
1026 {
1027 /* Anything to send, but stalled to long */
1028 tp->LastSendTime = jiffies;
1029 sktr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
1030 }
1031
1032 tp->timer.expires = jiffies + 2*HZ;
1033 add_timer(&tp->timer);
1034
1035 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
1036 return;
1037 tp->ReOpenInProgress = 1;
1038 sktr_open_adapter(dev);
1039
1040 return;
1041 }
1042
1043 /*
1044 * The typical workload of the driver: Handle the network interface interrupts.
1045 */
1046 static void sktr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1047 {
1048 struct device *dev = dev_id;
1049 struct net_local *tp;
1050 int ioaddr;
1051 unsigned short irq_type;
1052
1053 if(dev == NULL)
1054 {
1055 printk("%s: irq %d for unknown device.\n", dev->name, irq);
1056 return;
1057 }
1058
1059 dev->interrupt = 1;
1060
1061 ioaddr = dev->base_addr;
1062 tp = (struct net_local *)dev->priv;
1063
1064 irq_type = inw(ioaddr + SIFSTS);
1065
1066 while(irq_type & STS_SYSTEM_IRQ)
1067 {
1068 irq_type &= STS_IRQ_MASK;
1069
1070 if(!sktr_chk_ssb(tp, irq_type))
1071 {
1072 printk(KERN_INFO "%s: DATA LATE occurred\n", dev->name);
1073 break;
1074 }
1075
1076 switch(irq_type)
1077 {
1078 case STS_IRQ_RECEIVE_STATUS:
1079 sktr_reset_interrupt(dev);
1080 sktr_rcv_status_irq(dev);
1081 break;
1082
1083 case STS_IRQ_TRANSMIT_STATUS:
1084 /* Check if TRANSMIT.HALT command is complete */
1085 if(tp->ssb.Parm[0] & COMMAND_COMPLETE)
1086 {
1087 tp->TransmitCommandActive = 0;
1088 tp->TransmitHaltScheduled = 0;
1089
1090 /* Issue a new transmit command. */
1091 sktr_exec_cmd(dev, OC_TRANSMIT);
1092 }
1093
1094 sktr_reset_interrupt(dev);
1095 sktr_tx_status_irq(dev);
1096 break;
1097
1098 case STS_IRQ_COMMAND_STATUS:
1099 /* The SSB contains status of last command
1100 * other than receive/transmit.
1101 */
1102 sktr_cmd_status_irq(dev);
1103 break;
1104
1105 case STS_IRQ_SCB_CLEAR:
1106 /* The SCB is free for another command. */
1107 tp->ScbInUse = 0;
1108 sktr_chk_outstanding_cmds(dev);
1109 break;
1110
1111 case STS_IRQ_RING_STATUS:
1112 sktr_ring_status_irq(dev);
1113 break;
1114
1115 case STS_IRQ_ADAPTER_CHECK:
1116 sktr_chk_irq(dev);
1117 break;
1118
1119 default:
1120 printk(KERN_INFO "Unknown Token Ring IRQ\n");
1121 break;
1122 }
1123
1124 /* Reset system interrupt if not already done. */
1125 if(irq_type != STS_IRQ_TRANSMIT_STATUS
1126 && irq_type != STS_IRQ_RECEIVE_STATUS)
1127 {
1128 sktr_reset_interrupt(dev);
1129 }
1130
1131 irq_type = inw(ioaddr + SIFSTS);
1132 }
1133
1134 dev->interrupt = 0;
1135
1136 return;
1137 }
1138
1139 /*
1140 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
1141 */
1142 static void sktr_reset_interrupt(struct device *dev)
1143 {
1144 struct net_local *tp = (struct net_local *)dev->priv;
1145 SSB *ssb = &tp->ssb;
1146
1147 /*
1148 * [Workaround for "Data Late"]
1149 * Set all fields of the SSB to well-defined values so we can
1150 * check if the adapter has written the SSB.
1151 */
1152
1153 ssb->STS = (unsigned short) -1;
1154 ssb->Parm[0] = (unsigned short) -1;
1155 ssb->Parm[1] = (unsigned short) -1;
1156 ssb->Parm[2] = (unsigned short) -1;
1157
1158 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
1159 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
1160 */
1161 sktr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
1162
1163 return;
1164 }
1165
1166 /*
1167 * Check if the SSB has actually been written by the adapter.
1168 */
1169 static unsigned char sktr_chk_ssb(struct net_local *tp, unsigned short IrqType)
1170 {
1171 SSB *ssb = &tp->ssb; /* The address of the SSB. */
1172
1173 /* C 0 1 2 INTERRUPT CODE
1174 * - - - - --------------
1175 * 1 1 1 1 TRANSMIT STATUS
1176 * 1 1 1 1 RECEIVE STATUS
1177 * 1 ? ? 0 COMMAND STATUS
1178 * 0 0 0 0 SCB CLEAR
1179 * 1 1 0 0 RING STATUS
1180 * 0 0 0 0 ADAPTER CHECK
1181 *
1182 * 0 = SSB field not affected by interrupt
1183 * 1 = SSB field is affected by interrupt
1184 *
1185 * C = SSB ADDRESS +0: COMMAND
1186 * 0 = SSB ADDRESS +2: STATUS 0
1187 * 1 = SSB ADDRESS +4: STATUS 1
1188 * 2 = SSB ADDRESS +6: STATUS 2
1189 */
1190
1191 /* Check if this interrupt does use the SSB. */
1192
1193 if(IrqType != STS_IRQ_TRANSMIT_STATUS
1194 && IrqType != STS_IRQ_RECEIVE_STATUS
1195 && IrqType != STS_IRQ_COMMAND_STATUS
1196 && IrqType != STS_IRQ_RING_STATUS)
1197 {
1198 return (1); /* SSB not involved. */
1199 }
1200
1201 /* Note: All fields of the SSB have been set to all ones (-1) after it
1202 * has last been used by the software (see DriverIsr()).
1203 *
1204 * Check if the affected SSB fields are still unchanged.
1205 */
1206
1207 if(ssb->STS == (unsigned short) -1)
1208 return (0); /* Command field not yet available. */
1209 if(IrqType == STS_IRQ_COMMAND_STATUS)
1210 return (1); /* Status fields not always affected. */
1211 if(ssb->Parm[0] == (unsigned short) -1)
1212 return (0); /* Status 1 field not yet available. */
1213 if(IrqType == STS_IRQ_RING_STATUS)
1214 return (1); /* Status 2 & 3 fields not affected. */
1215
1216 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
1217 if(ssb->Parm[1] == (unsigned short) -1)
1218 return (0); /* Status 2 field not yet available. */
1219 if(ssb->Parm[2] == (unsigned short) -1)
1220 return (0); /* Status 3 field not yet available. */
1221
1222 return (1); /* All SSB fields have been written by the adapter. */
1223 }
1224
1225 /*
1226 * Evaluates the command results status in the SSB status field.
1227 */
1228 static void sktr_cmd_status_irq(struct device *dev)
1229 {
1230 struct net_local *tp = (struct net_local *)dev->priv;
1231 unsigned short ssb_cmd, ssb_parm_0;
1232 unsigned short ssb_parm_1;
1233 char *open_err = "Open error -";
1234 char *code_err = "Open code -";
1235
1236 /* Copy the ssb values to local variables */
1237 ssb_cmd = tp->ssb.STS;
1238 ssb_parm_0 = tp->ssb.Parm[0];
1239 ssb_parm_1 = tp->ssb.Parm[1];
1240
1241 if(ssb_cmd == OPEN)
1242 {
1243 tp->Sleeping = 0;
1244 if(!tp->ReOpenInProgress)
1245 wake_up_interruptible(&tp->wait_for_tok_int);
1246
1247 tp->OpenCommandIssued = 0;
1248 tp->ScbInUse = 0;
1249
1250 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
1251 {
1252 /* Success, the adapter is open. */
1253 tp->LobeWireFaultLogged = 0;
1254 tp->AdapterOpenFlag = 1;
1255 tp->AdapterVirtOpenFlag = 1;
1256 tp->TransmitCommandActive = 0;
1257 sktr_exec_cmd(dev, OC_TRANSMIT);
1258 sktr_exec_cmd(dev, OC_RECEIVE);
1259
1260 if(tp->ReOpenInProgress)
1261 tp->ReOpenInProgress = 0;
1262
1263 return;
1264 }
1265 else /* The adapter did not open. */
1266 {
1267 if(ssb_parm_0 & NODE_ADDR_ERROR)
1268 printk(KERN_INFO "%s: Node address error\n",
1269 dev->name);
1270 if(ssb_parm_0 & LIST_SIZE_ERROR)
1271 printk(KERN_INFO "%s: List size error\n",
1272 dev->name);
1273 if(ssb_parm_0 & BUF_SIZE_ERROR)
1274 printk(KERN_INFO "%s: Buffer size error\n",
1275 dev->name);
1276 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
1277 printk(KERN_INFO "%s: Tx buffer count error\n",
1278 dev->name);
1279 if(ssb_parm_0 & INVALID_OPEN_OPTION)
1280 printk(KERN_INFO "%s: Invalid open option\n",
1281 dev->name);
1282 if(ssb_parm_0 & OPEN_ERROR)
1283 {
1284 /* Show the open phase. */
1285 switch(ssb_parm_0 & OPEN_PHASES_MASK)
1286 {
1287 case LOBE_MEDIA_TEST:
1288 if(!tp->LobeWireFaultLogged)
1289 {
1290 tp->LobeWireFaultLogged = 1;
1291 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
1292 }
1293 tp->ReOpenInProgress = 1;
1294 tp->AdapterOpenFlag = 0;
1295 tp->AdapterVirtOpenFlag = 1;
1296 sktr_open_adapter(dev);
1297 return;
1298
1299 case PHYSICAL_INSERTION:
1300 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
1301 break;
1302
1303 case ADDRESS_VERIFICATION:
1304 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1305 break;
1306
1307 case PARTICIPATION_IN_RING_POLL:
1308 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1309 break;
1310
1311 case REQUEST_INITIALISATION:
1312 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1313 break;
1314
1315 case FULLDUPLEX_CHECK:
1316 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1317 break;
1318
1319 default:
1320 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1321 break;
1322 }
1323
1324 /* Show the open errors. */
1325 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1326 {
1327 case OPEN_FUNCTION_FAILURE:
1328 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1329 tp->LastOpenStatus =
1330 OPEN_FUNCTION_FAILURE;
1331 break;
1332
1333 case OPEN_SIGNAL_LOSS:
1334 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1335 tp->LastOpenStatus =
1336 OPEN_SIGNAL_LOSS;
1337 break;
1338
1339 case OPEN_TIMEOUT:
1340 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1341 tp->LastOpenStatus =
1342 OPEN_TIMEOUT;
1343 break;
1344
1345 case OPEN_RING_FAILURE:
1346 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1347 tp->LastOpenStatus =
1348 OPEN_RING_FAILURE;
1349 break;
1350
1351 case OPEN_RING_BEACONING:
1352 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1353 tp->LastOpenStatus =
1354 OPEN_RING_BEACONING;
1355 break;
1356
1357 case OPEN_DUPLICATE_NODEADDR:
1358 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1359 tp->LastOpenStatus =
1360 OPEN_DUPLICATE_NODEADDR;
1361 break;
1362
1363 case OPEN_REQUEST_INIT:
1364 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1365 tp->LastOpenStatus =
1366 OPEN_REQUEST_INIT;
1367 break;
1368
1369 case OPEN_REMOVE_RECEIVED:
1370 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1371 tp->LastOpenStatus =
1372 OPEN_REMOVE_RECEIVED;
1373 break;
1374
1375 case OPEN_FULLDUPLEX_SET:
1376 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1377 tp->LastOpenStatus =
1378 OPEN_FULLDUPLEX_SET;
1379 break;
1380
1381 default:
1382 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1383 tp->LastOpenStatus =
1384 OPEN_FUNCTION_FAILURE;
1385 break;
1386 }
1387 }
1388
1389 tp->AdapterOpenFlag = 0;
1390 tp->AdapterVirtOpenFlag = 0;
1391
1392 return;
1393 }
1394 }
1395 else
1396 {
1397 if(ssb_cmd != READ_ERROR_LOG)
1398 return;
1399
1400 /* Add values from the error log table to the MAC
1401 * statistics counters and update the errorlogtable
1402 * memory.
1403 */
1404 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1405 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1406 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1407 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1408 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1409 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1410 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1411 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1412 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1413 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1414 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1415 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1416 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1417 }
1418
1419 return;
1420 }
1421
1422 /*
1423 * The inverse routine to sktr_open().
1424 */
1425 static int sktr_close(struct device *dev)
1426 {
1427 struct net_local *tp = (struct net_local *)dev->priv;
1428
1429 dev->tbusy = 1;
1430 dev->start = 0;
1431
1432 del_timer(&tp->timer);
1433
1434 /* Flush the Tx and disable Rx here. */
1435
1436 tp->HaltInProgress = 1;
1437 sktr_exec_cmd(dev, OC_CLOSE);
1438 tp->timer.expires = jiffies + 1*HZ;
1439 tp->timer.function = sktr_timer_end_wait;
1440 tp->timer.data = (unsigned long)dev;
1441 add_timer(&tp->timer);
1442
1443 sktr_enable_interrupts(dev);
1444
1445 tp->Sleeping = 1;
1446 interruptible_sleep_on(&tp->wait_for_tok_int);
1447 tp->TransmitCommandActive = 0;
1448
1449 del_timer(&tp->timer);
1450 sktr_disable_interrupts(dev);
1451
1452 if(dev->dma > 0)
1453 {
1454 unsigned long flags=claim_dma_lock();
1455 disable_dma(dev->dma);
1456 release_dma_lock(flags);
1457 }
1458
1459 outw(0xFF00, dev->base_addr + SIFCMD);
1460 if(dev->dma > 0)
1461 outb(0xff, dev->base_addr + POSREG);
1462
1463 #ifdef MODULE
1464 MOD_DEC_USE_COUNT;
1465 #endif
1466
1467 sktr_cancel_tx_queue(tp);
1468
1469 return (0);
1470 }
1471
1472 /*
1473 * Get the current statistics. This may be called with the card open
1474 * or closed.
1475 */
1476 static struct enet_statistics *sktr_get_stats(struct device *dev)
1477 {
1478 struct net_local *tp = (struct net_local *)dev->priv;
1479
1480 return ((struct enet_statistics *)&tp->MacStat);
1481 }
1482
1483 /*
1484 * Set or clear the multicast filter for this adapter.
1485 */
1486 static void sktr_set_multicast_list(struct device *dev)
1487 {
1488 struct net_local *tp = (struct net_local *)dev->priv;
1489 unsigned int OpenOptions;
1490
1491 OpenOptions = tp->ocpl.OPENOptions &
1492 ~(PASS_ADAPTER_MAC_FRAMES
1493 | PASS_ATTENTION_FRAMES
1494 | PASS_BEACON_MAC_FRAMES
1495 | COPY_ALL_MAC_FRAMES
1496 | COPY_ALL_NON_MAC_FRAMES);
1497
1498 if(dev->flags & IFF_PROMISC)
1499 /* Enable promiscuous mode */
1500 OpenOptions |= COPY_ALL_NON_MAC_FRAMES | COPY_ALL_MAC_FRAMES;
1501 else
1502 {
1503 if(dev->flags & IFF_ALLMULTI)
1504 /* || dev->mc_count > HW_MAX_ADDRS) */
1505 {
1506 /* Disable promiscuous mode, use normal mode. */
1507 }
1508 else
1509 {
1510 if(dev->mc_count)
1511 {
1512 /* Walk the address list, and load the filter */
1513 }
1514 }
1515 }
1516
1517 tp->ocpl.OPENOptions = OpenOptions;
1518 sktr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1519
1520 return;
1521 }
1522
1523 /*
1524 * Wait for some time (microseconds)
1525 */
1526 static void sktr_wait(unsigned long time)
1527 {
1528 long tmp;
1529
1530 tmp = jiffies + time/(1000000/HZ);
1531 do {
1532 current->state = TASK_INTERRUPTIBLE;
1533 tmp = schedule_timeout(tmp);
1534 } while(time_after(tmp, jiffies));
1535
1536 return;
1537 }
1538
1539 /*
1540 * Write a command value to the SIFCMD register
1541 */
1542 static void sktr_exec_sifcmd(struct device *dev, unsigned int WriteValue)
1543 {
1544 int ioaddr = dev->base_addr;
1545 unsigned short cmd;
1546 unsigned short SifStsValue;
1547 unsigned long loop_counter;
1548
1549 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1550 cmd = (unsigned short)WriteValue;
1551 loop_counter = 0,5 * 800000;
1552 do {
1553 SifStsValue = inw(ioaddr + SIFSTS);
1554 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1555 outw(cmd, ioaddr + SIFCMD);
1556
1557 return;
1558 }
1559
1560 /*
1561 * Processes adapter hardware reset, halts adapter and downloads firmware,
1562 * clears the halt bit.
1563 */
1564 static int sktr_reset_adapter(struct device *dev)
1565 {
1566 struct net_local *tp = (struct net_local *)dev->priv;
1567 unsigned short *fw_ptr = (unsigned short *)&sktr_code;
1568 unsigned short count, c;
1569 int ioaddr = dev->base_addr;
1570
1571 /* Hardware adapter reset */
1572 outw(ACL_ARESET, ioaddr + SIFACL);
1573 sktr_wait(40);
1574
1575 c = inw(ioaddr + SIFACL);
1576 sktr_wait(20);
1577
1578 if(dev->dma == 0) /* For PCI adapters */
1579 {
1580 c &= ~(ACL_SPEED4 | ACL_SPEED16); /* Clear bits */
1581 if(tp->DataRate == SPEED_4)
1582 c |= ACL_SPEED4; /* Set 4Mbps */
1583 else
1584 c |= ACL_SPEED16; /* Set 16Mbps */
1585 }
1586
1587 /* In case a command is pending - forget it */
1588 tp->ScbInUse = 0;
1589
1590 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1591 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1592 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1593 outw(c, ioaddr + SIFACL);
1594 sktr_wait(40);
1595
1596 /* Download firmware via DIO interface: */
1597 do {
1598 /* Download first address part */
1599 outw(*fw_ptr, ioaddr + SIFADX);
1600 fw_ptr++;
1601
1602 /* Download second address part */
1603 outw(*fw_ptr, ioaddr + SIFADD);
1604 fw_ptr++;
1605
1606 if((count = *fw_ptr) != 0) /* Load loop counter */
1607 {
1608 fw_ptr++; /* Download block data */
1609 for(; count > 0; count--)
1610 {
1611 outw(*fw_ptr, ioaddr + SIFINC);
1612 fw_ptr++;
1613 }
1614 }
1615 else /* Stop, if last block downloaded */
1616 {
1617 c = inw(ioaddr + SIFACL);
1618 c &= (~ACL_CPHALT | ACL_SINTEN);
1619
1620 /* Clear CPHALT and start BUD */
1621 outw(c, ioaddr + SIFACL);
1622 return (1);
1623 }
1624 } while(count == 0);
1625
1626 return (-1);
1627 }
1628
1629 /*
1630 * Starts bring up diagnostics of token ring adapter and evaluates
1631 * diagnostic results.
1632 */
1633 static int sktr_bringup_diags(struct device *dev)
1634 {
1635 int loop_cnt, retry_cnt;
1636 unsigned short Status;
1637 int ioaddr = dev->base_addr;
1638
1639 sktr_wait(HALF_SECOND);
1640 sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1641 sktr_wait(HALF_SECOND);
1642
1643 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1644
1645 do {
1646 retry_cnt--;
1647 if(sktr_debug > 3)
1648 printk(KERN_INFO "BUD-Status: \n");
1649 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1650 do { /* Inspect BUD results */
1651 loop_cnt--;
1652 sktr_wait(HALF_SECOND);
1653 Status = inw(ioaddr + SIFSTS);
1654 Status &= STS_MASK;
1655
1656 if(sktr_debug > 3)
1657 printk(KERN_INFO " %04X \n", Status);
1658 /* BUD successfully completed */
1659 if(Status == STS_INITIALIZE)
1660 return (1);
1661 /* Unrecoverable hardware error, BUD not completed? */
1662 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1663 != (STS_ERROR | STS_TEST)));
1664
1665 /* Error preventing completion of BUD */
1666 if(retry_cnt > 0)
1667 {
1668 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1669 dev->name);
1670 sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1671 sktr_wait(HALF_SECOND);
1672 }
1673 } while(retry_cnt > 0);
1674
1675 Status = inw(ioaddr + SIFSTS);
1676 Status &= STS_ERROR_MASK; /* Hardware error occurred! */
1677
1678 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n",
1679 dev->name, Status);
1680
1681 return (-1);
1682 }
1683
1684 /*
1685 * Copy initialisation data to adapter memory, beginning at address
1686 * 1:0A00; Starting DMA test and evaluating result bits.
1687 */
1688 static int sktr_init_adapter(struct device *dev)
1689 {
1690 struct net_local *tp = (struct net_local *)dev->priv;
1691
1692 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1693 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1694 0xC5, 0xD9, 0xC3, 0xD4};
1695 void *ptr = (void *)&tp->ipb;
1696 unsigned short *ipb_ptr = (unsigned short *)ptr;
1697 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1698 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1699 unsigned short Status;
1700 int i, loop_cnt, retry_cnt;
1701 int ioaddr = dev->base_addr;
1702
1703 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1704 tp->ipb.SCB_Addr = SWAPW(virt_to_bus(&tp->scb));
1705 tp->ipb.SSB_Addr = SWAPW(virt_to_bus(&tp->ssb));
1706
1707 /* Maximum: three initialization retries */
1708 retry_cnt = INIT_MAX_RETRIES;
1709
1710 do {
1711 retry_cnt--;
1712
1713 /* Transfer initialization block */
1714 outw(0x0001, ioaddr + SIFADX);
1715
1716 /* To address 0001:0A00 of adapter RAM */
1717 outw(0x0A00, ioaddr + SIFADD);
1718
1719 /* Write 11 words to adapter RAM */
1720 for(i = 0; i < 11; i++)
1721 outw(ipb_ptr[i], ioaddr + SIFINC);
1722
1723 /* Execute SCB adapter command */
1724 sktr_exec_sifcmd(dev, CMD_EXECUTE);
1725
1726 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1727
1728 /* While remaining retries, no error and not completed */
1729 do {
1730 Status = 0;
1731 loop_cnt--;
1732 sktr_wait(HALF_SECOND);
1733
1734 /* Mask interesting status bits */
1735 Status = inw(ioaddr + SIFSTS);
1736 Status &= STS_MASK;
1737 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
1738 && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1739
1740 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1741 {
1742 /* Initialization completed without error */
1743 i = 0;
1744 do { /* Test if contents of SCB is valid */
1745 if(SCB_Test[i] != *(cb_ptr + i))
1746 /* DMA data error: wrong data in SCB */
1747 return (-1);
1748 i++;
1749 } while(i < 6);
1750
1751 i = 0;
1752 do { /* Test if contents of SSB is valid */
1753 if(SSB_Test[i] != *(sb_ptr + i))
1754 /* DMA data error: wrong data in SSB */
1755 return (-1);
1756 i++;
1757 } while (i < 8);
1758
1759 return (1); /* Adapter successfully initialized */
1760 }
1761 else
1762 {
1763 if((Status & STS_ERROR) != 0)
1764 {
1765 /* Initialization error occurred */
1766 Status = inw(ioaddr + SIFSTS);
1767 Status &= STS_ERROR_MASK;
1768 /* ShowInitialisationErrorCode(Status); */
1769 return (-1); /* Unrecoverable error */
1770 }
1771 else
1772 {
1773 if(retry_cnt > 0)
1774 {
1775 /* Reset adapter and try init again */
1776 sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1777 sktr_wait(HALF_SECOND);
1778 }
1779 }
1780 }
1781 } while(retry_cnt > 0);
1782
1783 return (-1);
1784 }
1785
1786 /*
1787 * Check for outstanding commands in command queue and tries to execute
1788 * command immediately. Corresponding command flag in command queue is cleared.
1789 */
1790 static void sktr_chk_outstanding_cmds(struct device *dev)
1791 {
1792 struct net_local *tp = (struct net_local *)dev->priv;
1793 unsigned long Addr = 0;
1794 unsigned char i = 0;
1795
1796 if(tp->CMDqueue == 0)
1797 return; /* No command execution */
1798
1799 /* If SCB in use: no command */
1800 if(tp->ScbInUse == 1)
1801 return;
1802
1803 /* Check if adapter is opened, avoiding COMMAND_REJECT
1804 * interrupt by the adapter!
1805 */
1806 if(tp->AdapterOpenFlag == 0)
1807 {
1808 if(tp->CMDqueue & OC_OPEN)
1809 {
1810 /* Execute OPEN command */
1811 tp->CMDqueue ^= OC_OPEN;
1812
1813 /* Copy the 18 bytes of the product ID */
1814 while((AdapterName[i] != '\0') && (i < PROD_ID_SIZE))
1815 {
1816 tp->ProductID[i] = AdapterName[i];
1817 i++;
1818 }
1819
1820 Addr = htonl(virt_to_bus(&tp->ocpl));
1821 tp->scb.Parm[0] = LOWORD(Addr);
1822 tp->scb.Parm[1] = HIWORD(Addr);
1823 tp->scb.CMD = OPEN;
1824 }
1825 else
1826 /* No OPEN command queued, but adapter closed. Note:
1827 * We'll try to re-open the adapter in DriverPoll()
1828 */
1829 return; /* No adapter command issued */
1830 }
1831 else
1832 {
1833 /* Adapter is open; evaluate command queue: try to execute
1834 * outstanding commands (depending on priority!) CLOSE
1835 * command queued
1836 */
1837 if(tp->CMDqueue & OC_CLOSE)
1838 {
1839 tp->CMDqueue ^= OC_CLOSE;
1840 tp->AdapterOpenFlag = 0;
1841 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1842 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1843 tp->scb.CMD = CLOSE;
1844 if(!tp->HaltInProgress)
1845 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1846 else
1847 tp->CMDqueue = 0; /* no more commands */
1848 }
1849 else
1850 {
1851 if(tp->CMDqueue & OC_RECEIVE)
1852 {
1853 tp->CMDqueue ^= OC_RECEIVE;
1854 Addr = htonl(virt_to_bus(tp->RplHead));
1855 tp->scb.Parm[0] = LOWORD(Addr);
1856 tp->scb.Parm[1] = HIWORD(Addr);
1857 tp->scb.CMD = RECEIVE;
1858 }
1859 else
1860 {
1861 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1862 {
1863 /* NOTE: TRANSMIT.HALT must be checked
1864 * before TRANSMIT.
1865 */
1866 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1867 tp->scb.CMD = TRANSMIT_HALT;
1868
1869 /* Parm[0] and Parm[1] are ignored
1870 * but should be set to zero!
1871 */
1872 tp->scb.Parm[0] = 0;
1873 tp->scb.Parm[1] = 0;
1874 }
1875 else
1876 {
1877 if(tp->CMDqueue & OC_TRANSMIT)
1878 {
1879 /* NOTE: TRANSMIT must be
1880 * checked after TRANSMIT.HALT
1881 */
1882 if(tp->TransmitCommandActive)
1883 {
1884 if(!tp->TransmitHaltScheduled)
1885 {
1886 tp->TransmitHaltScheduled = 1;
1887 sktr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1888 }
1889 tp->TransmitCommandActive = 0;
1890 return;
1891 }
1892
1893 tp->CMDqueue ^= OC_TRANSMIT;
1894 sktr_cancel_tx_queue(tp);
1895 Addr = htonl(virt_to_bus(tp->TplBusy));
1896 tp->scb.Parm[0] = LOWORD(Addr);
1897 tp->scb.Parm[1] = HIWORD(Addr);
1898 tp->scb.CMD = TRANSMIT;
1899 tp->TransmitCommandActive = 1;
1900 }
1901 else
1902 {
1903 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1904 {
1905 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1906 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1907 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1908 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1909 tp->scb.CMD = MODIFY_OPEN_PARMS;
1910 }
1911 else
1912 {
1913 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1914 {
1915 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1916 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1917 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1918 tp->scb.CMD = SET_FUNCT_ADDR;
1919 }
1920 else
1921 {
1922 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1923 {
1924 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1925 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1926 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1927 tp->scb.CMD = SET_GROUP_ADDR;
1928 }
1929 else
1930 {
1931 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1932 {
1933 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1934 Addr = htonl(virt_to_bus(&tp->errorlogtable));
1935 tp->scb.Parm[0] = LOWORD(Addr);
1936 tp->scb.Parm[1] = HIWORD(Addr);
1937 tp->scb.CMD = READ_ERROR_LOG;
1938 }
1939 else
1940 {
1941 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1942 tp->CMDqueue = 0;
1943 return;
1944 }
1945 }
1946 }
1947 }
1948 }
1949 }
1950 }
1951 }
1952 }
1953
1954 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1955
1956 /* Execute SCB and generate IRQ when done. */
1957 sktr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1958
1959 return;
1960 }
1961
1962 /*
1963 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1964 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1965 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1966 * cirquit fault on the lobe is detected; remove MAC frame received;
1967 * error counter overflow (255); opened adapter is the only station in ring.
1968 * After some of the IRQs the adapter is closed!
1969 */
1970 static void sktr_ring_status_irq(struct device *dev)
1971 {
1972 struct net_local *tp = (struct net_local *)dev->priv;
1973
1974 tp->CurrentRingStatus = SWAPB(tp->ssb.Parm[0]);
1975
1976 /* First: fill up statistics */
1977 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1978 {
1979 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1980 tp->MacStat.line_errors++;
1981 }
1982
1983 /* Adapter is closed, but initialized */
1984 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1985 {
1986 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1987 dev->name);
1988 tp->MacStat.line_errors++;
1989 }
1990
1991 if(tp->ssb.Parm[0] & RING_RECOVERY)
1992 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1993
1994 /* Counter overflow: read error log */
1995 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1996 {
1997 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1998 sktr_exec_cmd(dev, OC_READ_ERROR_LOG);
1999 }
2000
2001 /* Adapter is closed, but initialized */
2002 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
2003 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
2004 dev->name);
2005
2006 /* Adapter is closed, but initialized */
2007 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
2008 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
2009 dev->name);
2010
2011 if(tp->ssb.Parm[0] & HARD_ERROR)
2012 printk(KERN_INFO "%s: Hard Error\n", dev->name);
2013
2014 if(tp->ssb.Parm[0] & SOFT_ERROR)
2015 printk(KERN_INFO "%s: Soft Error\n", dev->name);
2016
2017 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
2018 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
2019
2020 if(tp->ssb.Parm[0] & SINGLE_STATION)
2021 printk(KERN_INFO "%s: Single Station\n", dev->name);
2022
2023 /* Check if adapter has been closed */
2024 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
2025 {
2026 printk(KERN_INFO "%s: Adapter closed (Reopening),"
2027 "QueueSkb %d, CurrentRingStat %x\n",
2028 dev->name, tp->QueueSkb, tp->CurrentRingStatus);
2029 tp->AdapterOpenFlag = 0;
2030 sktr_open_adapter(dev);
2031 }
2032
2033 return;
2034 }
2035
2036 /*
2037 * Issued if adapter has encountered an unrecoverable hardware
2038 * or software error.
2039 */
2040 static void sktr_chk_irq(struct device *dev)
2041 {
2042 int i;
2043 unsigned short AdapterCheckBlock[4];
2044 unsigned short ioaddr = dev->base_addr;
2045 struct net_local *tp = (struct net_local *)dev->priv;
2046
2047 tp->AdapterOpenFlag = 0; /* Adapter closed now */
2048
2049 /* Page number of adapter memory */
2050 outw(0x0001, ioaddr + SIFADX);
2051 /* Address offset */
2052 outw(CHECKADDR, ioaddr + SIFADR);
2053
2054 /* Reading 8 byte adapter check block. */
2055 for(i = 0; i < 4; i++)
2056 AdapterCheckBlock[i] = inw(ioaddr + SIFINC);
2057
2058 if(sktr_debug > 3)
2059 {
2060 printk("%s: AdapterCheckBlock: ", dev->name);
2061 for (i = 0; i < 4; i++)
2062 printk("%04X", AdapterCheckBlock[i]);
2063 printk("\n");
2064 }
2065
2066 switch(AdapterCheckBlock[0])
2067 {
2068 case DIO_PARITY:
2069 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
2070 break;
2071
2072 case DMA_READ_ABORT:
2073 printk(KERN_INFO "%s DMA read operation aborted:\n",
2074 dev->name);
2075 switch (AdapterCheckBlock[1])
2076 {
2077 case 0:
2078 printk(KERN_INFO "Timeout\n");
2079 printk(KERN_INFO "Address: %04X %04X\n",
2080 AdapterCheckBlock[2],
2081 AdapterCheckBlock[3]);
2082 break;
2083
2084 case 1:
2085 printk(KERN_INFO "Parity error\n");
2086 printk(KERN_INFO "Address: %04X %04X\n",
2087 AdapterCheckBlock[2],
2088 AdapterCheckBlock[3]);
2089 break;
2090
2091 case 2:
2092 printk(KERN_INFO "Bus error\n");
2093 printk(KERN_INFO "Address: %04X %04X\n",
2094 AdapterCheckBlock[2],
2095 AdapterCheckBlock[3]);
2096 break;
2097
2098 default:
2099 printk(KERN_INFO "Unknown error.\n");
2100 break;
2101 }
2102 break;
2103
2104 case DMA_WRITE_ABORT:
2105 printk(KERN_INFO "%s: DMA write operation aborted: \n",
2106 dev->name);
2107 switch (AdapterCheckBlock[1])
2108 {
2109 case 0:
2110 printk(KERN_INFO "Timeout\n");
2111 printk(KERN_INFO "Address: %04X %04X\n",
2112 AdapterCheckBlock[2],
2113 AdapterCheckBlock[3]);
2114 break;
2115
2116 case 1:
2117 printk(KERN_INFO "Parity error\n");
2118 printk(KERN_INFO "Address: %04X %04X\n",
2119 AdapterCheckBlock[2],
2120 AdapterCheckBlock[3]);
2121 break;
2122
2123 case 2:
2124 printk(KERN_INFO "Bus error\n");
2125 printk(KERN_INFO "Address: %04X %04X\n",
2126 AdapterCheckBlock[2],
2127 AdapterCheckBlock[3]);
2128 break;
2129
2130 default:
2131 printk(KERN_INFO "Unknown error.\n");
2132 break;
2133 }
2134 break;
2135
2136 case ILLEGAL_OP_CODE:
2137 printk("%s: Illegal operation code in firmware\n",
2138 dev->name);
2139 /* Parm[0-3]: adapter internal register R13-R15 */
2140 break;
2141
2142 case PARITY_ERRORS:
2143 printk("%s: Adapter internal bus parity error\n",
2144 dev->name);
2145 /* Parm[0-3]: adapter internal register R13-R15 */
2146 break;
2147
2148 case RAM_DATA_ERROR:
2149 printk("%s: RAM data error\n", dev->name);
2150 /* Parm[0-1]: MSW/LSW address of RAM location. */
2151 break;
2152
2153 case RAM_PARITY_ERROR:
2154 printk("%s: RAM parity error\n", dev->name);
2155 /* Parm[0-1]: MSW/LSW address of RAM location. */
2156 break;
2157
2158 case RING_UNDERRUN:
2159 printk("%s: Internal DMA underrun detected\n",
2160 dev->name);
2161 break;
2162
2163 case INVALID_IRQ:
2164 printk("%s: Unrecognized interrupt detected\n",
2165 dev->name);
2166 /* Parm[0-3]: adapter internal register R13-R15 */
2167 break;
2168
2169 case INVALID_ERROR_IRQ:
2170 printk("%s: Unrecognized error interrupt detected\n",
2171 dev->name);
2172 /* Parm[0-3]: adapter internal register R13-R15 */
2173 break;
2174
2175 case INVALID_XOP:
2176 printk("%s: Unrecognized XOP request detected\n",
2177 dev->name);
2178 /* Parm[0-3]: adapter internal register R13-R15 */
2179 break;
2180
2181 default:
2182 printk("%s: Unknown status", dev->name);
2183 break;
2184 }
2185
2186 if(sktr_chipset_init(dev) == 1)
2187 {
2188 /* Restart of firmware successful */
2189 tp->AdapterOpenFlag = 1;
2190 }
2191
2192 return;
2193 }
2194
2195 /*
2196 * Internal adapter pointer to RAM data are copied from adapter into
2197 * host system.
2198 */
2199 static void sktr_read_ptr(struct device *dev)
2200 {
2201 struct net_local *tp = (struct net_local *)dev->priv;
2202 unsigned short adapterram;
2203
2204 sktr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
2205 ADAPTER_INT_PTRS, 16);
2206 sktr_read_ram(dev, (unsigned char *)&adapterram,
2207 (unsigned short)SWAPB(tp->intptrs.AdapterRAMPtr), 2);
2208
2209 printk(KERN_INFO "%s: Adapter RAM size: %d K\n",
2210 dev->name, SWAPB(adapterram));
2211
2212 return;
2213 }
2214
2215 /*
2216 * Reads a number of bytes from adapter to system memory.
2217 */
2218 static void sktr_read_ram(struct device *dev, unsigned char *Data,
2219 unsigned short Address, int Length)
2220 {
2221 int i;
2222 unsigned short old_sifadx, old_sifadr, InWord;
2223 unsigned short ioaddr = dev->base_addr;
2224
2225 /* Save the current values */
2226 old_sifadx = inw(ioaddr + SIFADX);
2227 old_sifadr = inw(ioaddr + SIFADR);
2228
2229 /* Page number of adapter memory */
2230 outw(0x0001, ioaddr + SIFADX);
2231 /* Address offset in adapter RAM */
2232 outw(Address, ioaddr + SIFADR);
2233
2234 /* Copy len byte from adapter memory to system data area. */
2235 i = 0;
2236 for(;;)
2237 {
2238 InWord = inw(ioaddr + SIFINC);
2239
2240 *(Data + i) = HIBYTE(InWord); /* Write first byte */
2241 if(++i == Length) /* All is done break */
2242 break;
2243
2244 *(Data + i) = LOBYTE(InWord); /* Write second byte */
2245 if (++i == Length) /* All is done break */
2246 break;
2247 }
2248
2249 /* Restore original values */
2250 outw(old_sifadx, ioaddr + SIFADX);
2251 outw(old_sifadr, ioaddr + SIFADR);
2252
2253 return;
2254 }
2255
2256 /*
2257 * Reads MAC address from adapter ROM.
2258 */
2259 static void sktr_read_addr(struct device *dev, unsigned char *Address)
2260 {
2261 int i, In;
2262 unsigned short ioaddr = dev->base_addr;
2263
2264 /* Address: 0000:0000 */
2265 outw(0, ioaddr + SIFADX);
2266 outw(0, ioaddr + SIFADR);
2267
2268 /* Read six byte MAC address data */
2269 for(i = 0; i < 6; i++)
2270 {
2271 In = inw(ioaddr + SIFINC);
2272 *(Address + i) = (unsigned char)(In >> 8);
2273 }
2274
2275 return;
2276 }
2277
2278 /*
2279 * Cancel all queued packets in the transmission queue.
2280 */
2281 static void sktr_cancel_tx_queue(struct net_local* tp)
2282 {
2283 TPL *tpl;
2284 struct sk_buff *skb;
2285
2286 /*
2287 * NOTE: There must not be an active TRANSMIT command pending, when
2288 * this function is called.
2289 */
2290 if(tp->TransmitCommandActive)
2291 return;
2292
2293 for(;;)
2294 {
2295 tpl = tp->TplBusy;
2296 if(!tpl->BusyFlag)
2297 break;
2298 /* "Remove" TPL from busy list. */
2299 tp->TplBusy = tpl->NextTPLPtr;
2300 sktr_write_tpl_status(tpl, 0); /* Clear VALID bit */
2301 tpl->BusyFlag = 0; /* "free" TPL */
2302
2303 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2304
2305 dev_kfree_skb(tpl->Skb);
2306 }
2307
2308 for(;;)
2309 {
2310 skb = skb_dequeue(&tp->SendSkbQueue);
2311 if(skb == NULL)
2312 break;
2313 tp->QueueSkb++;
2314 dev_kfree_skb(skb);
2315 }
2316
2317 return;
2318 }
2319
2320 /*
2321 * This function is called whenever a transmit interrupt is generated by the
2322 * adapter. For a command complete interrupt, it is checked if we have to
2323 * issue a new transmit command or not.
2324 */
2325 static void sktr_tx_status_irq(struct device *dev)
2326 {
2327 struct net_local *tp = (struct net_local *)dev->priv;
2328 unsigned char HighByte, HighAc, LowAc;
2329 TPL *tpl;
2330
2331 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2332 * available, because the CLEAR SSB command has already been issued.
2333 *
2334 * Process all complete transmissions.
2335 */
2336
2337 for(;;)
2338 {
2339 tpl = tp->TplBusy;
2340 if(!tpl->BusyFlag || (tpl->Status
2341 & (TX_VALID | TX_FRAME_COMPLETE))
2342 != TX_FRAME_COMPLETE)
2343 {
2344 break;
2345 }
2346
2347 /* "Remove" TPL from busy list. */
2348 tp->TplBusy = tpl->NextTPLPtr ;
2349
2350 if(sktr_debug > 3)
2351 sktr_dump(tpl->MData, SWAPB(tpl->FrameSize));
2352
2353 /* Check the transmit status field only for directed frames*/
2354 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2355 {
2356 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2357 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2358 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2359
2360 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2361 {
2362 printk(KERN_INFO "%s: (DA=%08lX not recognized)",
2363 dev->name,
2364 *(unsigned long *)&tpl->MData[2+2]);
2365 }
2366 else
2367 {
2368 if(sktr_debug > 3)
2369 printk("%s: Directed frame tx'd\n",
2370 dev->name);
2371 }
2372 }
2373 else
2374 {
2375 if(!DIRECTED_FRAME(tpl))
2376 {
2377 if(sktr_debug > 3)
2378 printk("%s: Broadcast frame tx'd\n",
2379 dev->name);
2380 }
2381 }
2382
2383 tp->MacStat.tx_packets++;
2384 dev_kfree_skb(tpl->Skb);
2385 tpl->BusyFlag = 0; /* "free" TPL */
2386 }
2387
2388 dev->tbusy = 0;
2389 if(tp->QueueSkb < MAX_TX_QUEUE)
2390 sktr_hardware_send_packet(dev, tp);
2391
2392 return;
2393 }
2394
2395 /*
2396 * Called if a frame receive interrupt is generated by the adapter.
2397 * Check if the frame is valid and indicate it to system.
2398 */
2399 static void sktr_rcv_status_irq(struct device *dev)
2400 {
2401 struct net_local *tp = (struct net_local *)dev->priv;
2402 unsigned char *ReceiveDataPtr;
2403 struct sk_buff *skb;
2404 unsigned int Length, Length2;
2405 RPL *rpl;
2406 RPL *SaveHead;
2407
2408 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2409 * available, because the CLEAR SSB command has already been issued.
2410 *
2411 * Process all complete receives.
2412 */
2413
2414 for(;;)
2415 {
2416 rpl = tp->RplHead;
2417 if(rpl->Status & RX_VALID)
2418 break; /* RPL still in use by adapter */
2419
2420 /* Forward RPLHead pointer to next list. */
2421 SaveHead = tp->RplHead;
2422 tp->RplHead = rpl->NextRPLPtr;
2423
2424 /* Get the frame size (Byte swap for Intel).
2425 * Do this early (see workaround comment below)
2426 */
2427 Length = (unsigned short)SWAPB(rpl->FrameSize);
2428
2429 /* Check if the Frame_Start, Frame_End and
2430 * Frame_Complete bits are set.
2431 */
2432 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2433 == VALID_SINGLE_BUFFER_FRAME)
2434 {
2435 ReceiveDataPtr = rpl->MData;
2436
2437 /* Workaround for delayed write of FrameSize on ISA
2438 * (FrameSize is false but valid-bit is reset)
2439 * Frame size is set to zero when the RPL is freed.
2440 * Length2 is there because there have also been
2441 * cases where the FrameSize was partially written
2442 */
2443 Length2 = (unsigned short)SWAPB(rpl->FrameSize);
2444
2445 if(Length == 0 || Length != Length2)
2446 {
2447 tp->RplHead = SaveHead;
2448 break; /* Return to sktr_interrupt */
2449 }
2450
2451 /* Drop frames sent by myself */
2452 if(sktr_chk_frame(dev, rpl->MData))
2453 {
2454 printk(KERN_INFO "%s: Received my own frame\n",
2455 dev->name);
2456 if(rpl->Skb != NULL)
2457 dev_kfree_skb(rpl->Skb);
2458 }
2459 else
2460 {
2461 sktr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2462
2463 if(sktr_debug > 3)
2464 printk("%s: Packet Length %04X (%d)\n",
2465 dev->name, Length, Length);
2466
2467 /* Indicate the received frame to system the
2468 * adapter does the Source-Routing padding for
2469 * us. See: OpenOptions in sktr_init_opb()
2470 */
2471 skb = rpl->Skb;
2472 if(rpl->SkbStat == SKB_UNAVAILABLE)
2473 {
2474 /* Try again to allocate skb */
2475 skb = dev_alloc_skb(tp->MaxPacketSize);
2476 if(skb == NULL)
2477 {
2478 /* Update Stats ?? */
2479 }
2480 else
2481 {
2482 skb->dev = dev;
2483 skb_put(skb, tp->MaxPacketSize);
2484 rpl->SkbStat = SKB_DATA_COPY;
2485 ReceiveDataPtr = rpl->MData;
2486 }
2487 }
2488
2489 if(rpl->SkbStat == SKB_DATA_COPY
2490 || rpl->SkbStat == SKB_DMA_DIRECT)
2491 {
2492 if(rpl->SkbStat == SKB_DATA_COPY)
2493 {
2494 memmove(skb->data, ReceiveDataPtr, Length);
2495 }
2496
2497 /* Deliver frame to system */
2498 rpl->Skb = NULL;
2499 skb_trim(skb,Length);
2500 skb->protocol = tr_type_trans(skb,dev);
2501 netif_rx(skb);
2502 }
2503 }
2504 }
2505 else /* Invalid frame */
2506 {
2507 if(rpl->Skb != NULL)
2508 dev_kfree_skb(rpl->Skb);
2509
2510 /* Skip list. */
2511 if(rpl->Status & RX_START_FRAME)
2512 /* Frame start bit is set -> overflow. */
2513 tp->MacStat.rx_errors++;
2514 }
2515
2516 /* Allocate new skb for rpl */
2517 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2518
2519 /* skb == NULL ? then use local buffer */
2520 if(rpl->Skb == NULL)
2521 {
2522 rpl->SkbStat = SKB_UNAVAILABLE;
2523 rpl->FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[rpl->RPLIndex]));
2524 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2525 }
2526 else /* skb != NULL */
2527 {
2528 rpl->Skb->dev = dev;
2529 skb_put(rpl->Skb, tp->MaxPacketSize);
2530
2531 /* Data unreachable for DMA ? then use local buffer */
2532 if(virt_to_bus(rpl->Skb->data) + tp->MaxPacketSize
2533 > ISA_MAX_ADDRESS)
2534 {
2535 rpl->SkbStat = SKB_DATA_COPY;
2536 rpl->FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[rpl->RPLIndex]));
2537 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2538 }
2539 else
2540 {
2541 /* DMA directly in skb->data */
2542 rpl->SkbStat = SKB_DMA_DIRECT;
2543 rpl->FragList[0].DataAddr = htonl(virt_to_bus(rpl->Skb->data));
2544 rpl->MData = rpl->Skb->data;
2545 }
2546 }
2547
2548 rpl->FragList[0].DataCount = SWAPB(tp->MaxPacketSize);
2549 rpl->FrameSize = 0;
2550
2551 /* Pass the last RPL back to the adapter */
2552 tp->RplTail->FrameSize = 0;
2553
2554 /* Reset the CSTAT field in the list. */
2555 sktr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2556
2557 /* Current RPL becomes last one in list. */
2558 tp->RplTail = tp->RplTail->NextRPLPtr;
2559
2560 /* Inform adapter about RPL valid. */
2561 sktr_exec_sifcmd(dev, CMD_RX_VALID);
2562 }
2563
2564 return;
2565 }
2566
2567 /*
2568 * This function should be used whenever the status of any RPL must be
2569 * modified by the driver, because the compiler may otherwise change the
2570 * order of instructions such that writing the RPL status may be executed
2571 * at an undesireable time. When this function is used, the status is
2572 * always written when the function is called.
2573 */
2574 static void sktr_write_rpl_status(RPL *rpl, unsigned int Status)
2575 {
2576 rpl->Status = Status;
2577
2578 return;
2579 }
2580
2581 /*
2582 * The function updates the statistic counters in mac->MacStat.
2583 * It differtiates between directed and broadcast/multicast ( ==functional)
2584 * frames.
2585 */
2586 static void sktr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2587 unsigned int Length)
2588 {
2589 tp->MacStat.rx_packets++;
2590
2591 /* Test functional bit */
2592 if(DataPtr[2] & GROUP_BIT)
2593 tp->MacStat.multicast++;
2594
2595 return;
2596 }
2597
2598 /*
2599 * Check if it is a frame of myself. Compare source address with my current
2600 * address in reverse direction, and mask out the TR_RII.
2601 */
2602 static unsigned char sktr_chk_frame(struct device *dev, unsigned char *Addr)
2603 {
2604 int i;
2605
2606 for(i = 5; i > 0; i--)
2607 {
2608 if(Addr[8 + i] != dev->dev_addr[i])
2609 return (0);
2610 }
2611
2612 /* Mask out RIF bit. */
2613 if((Addr[8] & ~TR_RII) != (unsigned char)(dev->dev_addr[0]))
2614 return (0);
2615
2616 return (1); /* It is my frame. */
2617 }
2618
2619 /*
2620 * Dump Packet (data)
2621 */
2622 static void sktr_dump(unsigned char *Data, int length)
2623 {
2624 int i, j;
2625
2626 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2627 {
2628 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2629 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2630 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2631 }
2632
2633 return;
2634 }
2635
2636 #ifdef MODULE
2637
2638 static struct device* dev_sktr[SKTR_MAX_ADAPTERS];
2639 static int io[SKTR_MAX_ADAPTERS] = { 0, 0 };
2640 static int irq[SKTR_MAX_ADAPTERS] = { 0, 0 };
2641 static int mem[SKTR_MAX_ADAPTERS] = { 0, 0 };
2642
2643 MODULE_PARM(io, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
2644 MODULE_PARM(irq, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
2645 MODULE_PARM(mem, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
2646
2647 int init_module(void)
2648 {
2649 int i;
2650
2651 for(i = 0; i < SKTR_MAX_ADAPTERS; i++)
2652 {
2653 irq[i] = 0;
2654 mem[i] = 0;
2655 dev_sktr[i] = NULL;
2656 dev_sktr[i] = init_trdev(dev_sktr[i], 0);
2657 if(dev_sktr[i] == NULL)
2658 return (-ENOMEM);
2659
2660 dev_sktr[i]->base_addr = io[i];
2661 dev_sktr[i]->irq = irq[i];
2662 dev_sktr[i]->mem_start = mem[i];
2663 dev_sktr[i]->init = &sktr_probe;
2664
2665 if(register_trdev(dev_sktr[i]) != 0)
2666 {
2667 kfree_s(dev_sktr[i], sizeof(struct device));
2668 dev_sktr[i] = NULL;
2669 if(i == 0)
2670 {
2671 printk("sktr: register_trdev() returned non-zero.\n");
2672 return (-EIO);
2673 }
2674 else
2675 return (0);
2676 }
2677 }
2678
2679 return (0);
2680 }
2681
2682 void cleanup_module(void)
2683 {
2684 int i;
2685
2686 for(i = 0; i < SKTR_MAX_ADAPTERS; i++)
2687 {
2688 if(dev_sktr[i])
2689 {
2690 unregister_trdev(dev_sktr[i]);
2691 release_region(dev_sktr[i]->base_addr, SKTR_IO_EXTENT);
2692 if(dev_sktr[i]->irq)
2693 free_irq(dev_sktr[i]->irq, dev_sktr[i]);
2694 if(dev_sktr[i]->dma > 0)
2695 free_dma(dev_sktr[i]->dma);
2696 if(dev_sktr[i]->priv)
2697 kfree_s(dev_sktr[i]->priv, sizeof(struct net_local));
2698 kfree_s(dev_sktr[i], sizeof(struct device));
2699 dev_sktr[i] = NULL;
2700 }
2701 }
2702 }
2703 #endif /* MODULE */
Copy of Dave Jones history.git as used by http://archive.org/details/git-history-of-linux