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[CONNECTOR]: Update documentation to match reality.
[linux-2.6/verdex.git] / drivers / net / tokenring / tms380tr.c
blob2e39bf1f74620f88cf5d03fce1a71ac0f1e107fb
1 /*
2 * tms380tr.c: A network driver library for Texas Instruments TMS380-based
3 * Token Ring Adapters.
4 *
5 * Originally sktr.c: Written 1997 by Christoph Goos
6 *
7 * A fine result of the Linux Systems Network Architecture Project.
8 * http://www.linux-sna.org
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * The following modules are currently available for card support:
14 * - tmspci (Generic PCI card support)
15 * - abyss (Madge PCI support)
16 * - tmsisa (SysKonnect TR4/16 ISA)
17 *
18 * Sources:
19 * - The hardware related parts of this driver are take from
20 * the SysKonnect Token Ring driver for Windows NT.
21 * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
22 * driver, as well as the 'skeleton.c' driver by Donald Becker.
23 * - Also various other drivers in the linux source tree were taken
24 * as samples for some tasks.
25 * - TI TMS380 Second-Generation Token Ring User's Guide
26 * - TI datasheets for respective chips
27 * - David Hein at Texas Instruments
28 * - Various Madge employees
29 *
30 * Maintainer(s):
31 * JS Jay Schulist jschlst@samba.org
32 * CG Christoph Goos cgoos@syskonnect.de
33 * AF Adam Fritzler mid@auk.cx
34 * MLP Mike Phillips phillim@amtrak.com
35 * JF Jochen Friedrich jochen@scram.de
36 *
37 * Modification History:
38 * 29-Aug-97 CG Created
39 * 04-Apr-98 CG Fixed problems caused by tok_timer_check
40 * 10-Apr-98 CG Fixed lockups at cable disconnection
41 * 27-May-98 JS Formated to Linux Kernel Format
42 * 31-May-98 JS Hacked in PCI support
43 * 16-Jun-98 JS Modulized for multiple cards with one driver
44 * Sep-99 AF Renamed to tms380tr (supports more than SK's)
45 * 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support
46 * Fixed a bug causing double copies on PCI
47 * Fixed for new multicast stuff (2.2/2.3)
48 * 25-Sep-99 AF Uped TPL_NUM from 3 to 9
49 * Removed extraneous 'No free TPL'
50 * 22-Dec-99 AF Added Madge PCI Mk2 support and generalized
51 * parts of the initilization procedure.
52 * 30-Dec-99 AF Turned tms380tr into a library ala 8390.
53 * Madge support is provided in the abyss module
54 * Generic PCI support is in the tmspci module.
55 * 30-Nov-00 JF Updated PCI code to support IO MMU via
56 * pci_map_static(). Alpha uses this MMU for ISA
57 * as well.
58 * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some
59 * cleanup.
60 * 13-Jan-02 JF Add spinlock to fix race condition.
61 * 09-Nov-02 JF Fixed printks to not SPAM the console during
62 * normal operation.
63 * 30-Dec-02 JF Removed incorrect __init from
64 * tms380tr_init_card.
65 * 22-Jul-05 JF Converted to dma-mapping.
66 *
67 * To do:
68 * 1. Multi/Broadcast packet handling (this may have fixed itself)
69 * 2. Write a sktrisa module that includes the old ISA support (done)
70 * 3. Allow modules to load their own microcode
71 * 4. Speed up the BUD process -- freezing the kernel for 3+sec is
72 * quite unacceptable.
73 * 5. Still a few remaining stalls when the cable is unplugged.
74 */
75
76 #ifdef MODULE
77 static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
78 #endif
79
80 #include <linux/module.h>
81 #include <linux/kernel.h>
82 #include <linux/types.h>
83 #include <linux/fcntl.h>
84 #include <linux/interrupt.h>
85 #include <linux/ptrace.h>
86 #include <linux/ioport.h>
87 #include <linux/in.h>
88 #include <linux/slab.h>
89 #include <linux/string.h>
90 #include <linux/time.h>
91 #include <linux/errno.h>
92 #include <linux/init.h>
93 #include <linux/dma-mapping.h>
94 #include <linux/delay.h>
95 #include <linux/netdevice.h>
96 #include <linux/etherdevice.h>
97 #include <linux/skbuff.h>
98 #include <linux/trdevice.h>
99 #include <linux/firmware.h>
100 #include <linux/bitops.h>
101
102 #include <asm/system.h>
103 #include <asm/io.h>
104 #include <asm/dma.h>
105 #include <asm/irq.h>
106 #include <asm/uaccess.h>
107
108 #include "tms380tr.h" /* Our Stuff */
109
110 /* Use 0 for production, 1 for verification, 2 for debug, and
111 * 3 for very verbose debug.
112 */
113 #ifndef TMS380TR_DEBUG
114 #define TMS380TR_DEBUG 0
115 #endif
116 static unsigned int tms380tr_debug = TMS380TR_DEBUG;
117
118 /* Index to functions, as function prototypes.
119 * Alphabetical by function name.
120 */
121
122 /* "A" */
123 /* "B" */
124 static int tms380tr_bringup_diags(struct net_device *dev);
125 /* "C" */
126 static void tms380tr_cancel_tx_queue(struct net_local* tp);
127 static int tms380tr_chipset_init(struct net_device *dev);
128 static void tms380tr_chk_irq(struct net_device *dev);
129 static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
130 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
131 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
132 int tms380tr_close(struct net_device *dev);
133 static void tms380tr_cmd_status_irq(struct net_device *dev);
134 /* "D" */
135 static void tms380tr_disable_interrupts(struct net_device *dev);
136 #if TMS380TR_DEBUG > 0
137 static void tms380tr_dump(unsigned char *Data, int length);
138 #endif
139 /* "E" */
140 static void tms380tr_enable_interrupts(struct net_device *dev);
141 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
142 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
143 /* "F" */
144 /* "G" */
145 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
146 /* "H" */
147 static int tms380tr_hardware_send_packet(struct sk_buff *skb,
148 struct net_device *dev);
149 /* "I" */
150 static int tms380tr_init_adapter(struct net_device *dev);
151 static void tms380tr_init_ipb(struct net_local *tp);
152 static void tms380tr_init_net_local(struct net_device *dev);
153 static void tms380tr_init_opb(struct net_device *dev);
154 /* "M" */
155 /* "O" */
156 int tms380tr_open(struct net_device *dev);
157 static void tms380tr_open_adapter(struct net_device *dev);
158 /* "P" */
159 /* "R" */
160 static void tms380tr_rcv_status_irq(struct net_device *dev);
161 static int tms380tr_read_ptr(struct net_device *dev);
162 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
163 unsigned short Address, int Length);
164 static int tms380tr_reset_adapter(struct net_device *dev);
165 static void tms380tr_reset_interrupt(struct net_device *dev);
166 static void tms380tr_ring_status_irq(struct net_device *dev);
167 /* "S" */
168 static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev);
169 static void tms380tr_set_multicast_list(struct net_device *dev);
170 static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
171 /* "T" */
172 static void tms380tr_timer_chk(unsigned long data);
173 static void tms380tr_timer_end_wait(unsigned long data);
174 static void tms380tr_tx_status_irq(struct net_device *dev);
175 /* "U" */
176 static void tms380tr_update_rcv_stats(struct net_local *tp,
177 unsigned char DataPtr[], unsigned int Length);
178 /* "W" */
179 void tms380tr_wait(unsigned long time);
180 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
181 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
182
183 #define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg))
184 #define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg))
185 #define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg))
186 #define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg))
187
188
189
190 #if 0 /* TMS380TR_DEBUG > 0 */
191 static int madgemc_sifprobe(struct net_device *dev)
192 {
193 unsigned char old, chk1, chk2;
194
195 old = SIFREADB(SIFADR); /* Get the old SIFADR value */
196
197 chk1 = 0; /* Begin with check value 0 */
198 do {
199 madgemc_setregpage(dev, 0);
200 /* Write new SIFADR value */
201 SIFWRITEB(chk1, SIFADR);
202 chk2 = SIFREADB(SIFADR);
203 if (chk2 != chk1)
204 return -1;
205
206 madgemc_setregpage(dev, 1);
207 /* Read, invert and write */
208 chk2 = SIFREADB(SIFADD);
209 if (chk2 != chk1)
210 return -1;
211
212 madgemc_setregpage(dev, 0);
213 chk2 ^= 0x0FE;
214 SIFWRITEB(chk2, SIFADR);
215
216 /* Read, invert and compare */
217 madgemc_setregpage(dev, 1);
218 chk2 = SIFREADB(SIFADD);
219 madgemc_setregpage(dev, 0);
220 chk2 ^= 0x0FE;
221
222 if(chk1 != chk2)
223 return (-1); /* No adapter */
224 chk1 -= 2;
225 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
226
227 madgemc_setregpage(dev, 0); /* sanity */
228 /* Restore the SIFADR value */
229 SIFWRITEB(old, SIFADR);
230
231 return (0);
232 }
233 #endif
234
235 /*
236 * Open/initialize the board. This is called sometime after
237 * booting when the 'ifconfig' program is run.
238 *
239 * This routine should set everything up anew at each open, even
240 * registers that "should" only need to be set once at boot, so that
241 * there is non-reboot way to recover if something goes wrong.
242 */
243 int tms380tr_open(struct net_device *dev)
244 {
245 struct net_local *tp = netdev_priv(dev);
246 int err;
247
248 /* init the spinlock */
249 spin_lock_init(&tp->lock);
250 init_timer(&tp->timer);
251
252 /* Reset the hardware here. Don't forget to set the station address. */
253
254 #ifdef CONFIG_ISA
255 if(dev->dma > 0)
256 {
257 unsigned long flags=claim_dma_lock();
258 disable_dma(dev->dma);
259 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
260 enable_dma(dev->dma);
261 release_dma_lock(flags);
262 }
263 #endif
264
265 err = tms380tr_chipset_init(dev);
266 if(err)
267 {
268 printk(KERN_INFO "%s: Chipset initialization error\n",
269 dev->name);
270 return (-1);
271 }
272
273 tp->timer.expires = jiffies + 30*HZ;
274 tp->timer.function = tms380tr_timer_end_wait;
275 tp->timer.data = (unsigned long)dev;
276 add_timer(&tp->timer);
277
278 printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
279 dev->name, tms380tr_read_ptr(dev));
280
281 tms380tr_enable_interrupts(dev);
282 tms380tr_open_adapter(dev);
283
284 netif_start_queue(dev);
285
286 /* Wait for interrupt from hardware. If interrupt does not come,
287 * there will be a timeout from the timer.
288 */
289 tp->Sleeping = 1;
290 interruptible_sleep_on(&tp->wait_for_tok_int);
291 del_timer(&tp->timer);
292
293 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
294 if(tp->AdapterVirtOpenFlag == 0)
295 {
296 tms380tr_disable_interrupts(dev);
297 return (-1);
298 }
299
300 tp->StartTime = jiffies;
301
302 /* Start function control timer */
303 tp->timer.expires = jiffies + 2*HZ;
304 tp->timer.function = tms380tr_timer_chk;
305 tp->timer.data = (unsigned long)dev;
306 add_timer(&tp->timer);
307
308 return (0);
309 }
310
311 /*
312 * Timeout function while waiting for event
313 */
314 static void tms380tr_timer_end_wait(unsigned long data)
315 {
316 struct net_device *dev = (struct net_device*)data;
317 struct net_local *tp = netdev_priv(dev);
318
319 if(tp->Sleeping)
320 {
321 tp->Sleeping = 0;
322 wake_up_interruptible(&tp->wait_for_tok_int);
323 }
324
325 return;
326 }
327
328 /*
329 * Initialize the chipset
330 */
331 static int tms380tr_chipset_init(struct net_device *dev)
332 {
333 struct net_local *tp = netdev_priv(dev);
334 int err;
335
336 tms380tr_init_ipb(tp);
337 tms380tr_init_opb(dev);
338 tms380tr_init_net_local(dev);
339
340 if(tms380tr_debug > 3)
341 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
342 err = tms380tr_reset_adapter(dev);
343 if(err < 0)
344 return (-1);
345
346 if(tms380tr_debug > 3)
347 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
348 err = tms380tr_bringup_diags(dev);
349 if(err < 0)
350 return (-1);
351
352 if(tms380tr_debug > 3)
353 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
354 err = tms380tr_init_adapter(dev);
355 if(err < 0)
356 return (-1);
357
358 if(tms380tr_debug > 3)
359 printk(KERN_DEBUG "%s: Done!\n", dev->name);
360 return (0);
361 }
362
363 /*
364 * Initializes the net_local structure.
365 */
366 static void tms380tr_init_net_local(struct net_device *dev)
367 {
368 struct net_local *tp = netdev_priv(dev);
369 int i;
370 dma_addr_t dmabuf;
371
372 tp->scb.CMD = 0;
373 tp->scb.Parm[0] = 0;
374 tp->scb.Parm[1] = 0;
375
376 tp->ssb.STS = 0;
377 tp->ssb.Parm[0] = 0;
378 tp->ssb.Parm[1] = 0;
379 tp->ssb.Parm[2] = 0;
380
381 tp->CMDqueue = 0;
382
383 tp->AdapterOpenFlag = 0;
384 tp->AdapterVirtOpenFlag = 0;
385 tp->ScbInUse = 0;
386 tp->OpenCommandIssued = 0;
387 tp->ReOpenInProgress = 0;
388 tp->HaltInProgress = 0;
389 tp->TransmitHaltScheduled = 0;
390 tp->LobeWireFaultLogged = 0;
391 tp->LastOpenStatus = 0;
392 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
393
394 /* Create circular chain of transmit lists */
395 for (i = 0; i < TPL_NUM; i++)
396 {
397 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
398 tp->Tpl[i].Status = 0;
399 tp->Tpl[i].FrameSize = 0;
400 tp->Tpl[i].FragList[0].DataCount = 0;
401 tp->Tpl[i].FragList[0].DataAddr = 0;
402 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
403 tp->Tpl[i].MData = NULL;
404 tp->Tpl[i].TPLIndex = i;
405 tp->Tpl[i].DMABuff = 0;
406 tp->Tpl[i].BusyFlag = 0;
407 }
408
409 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
410
411 /* Create circular chain of receive lists */
412 for (i = 0; i < RPL_NUM; i++)
413 {
414 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
415 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
416 tp->Rpl[i].FrameSize = 0;
417 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
418
419 /* Alloc skb and point adapter to data area */
420 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
421 tp->Rpl[i].DMABuff = 0;
422
423 /* skb == NULL ? then use local buffer */
424 if(tp->Rpl[i].Skb == NULL)
425 {
426 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
427 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
428 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
429 }
430 else /* SKB != NULL */
431 {
432 tp->Rpl[i].Skb->dev = dev;
433 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
434
435 /* data unreachable for DMA ? then use local buffer */
436 dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
437 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
438 {
439 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
440 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
441 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
442 }
443 else /* DMA directly in skb->data */
444 {
445 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
446 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
447 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
448 tp->Rpl[i].DMABuff = dmabuf;
449 }
450 }
451
452 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
453 tp->Rpl[i].RPLIndex = i;
454 }
455
456 tp->RplHead = &tp->Rpl[0];
457 tp->RplTail = &tp->Rpl[RPL_NUM-1];
458 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
459
460 return;
461 }
462
463 /*
464 * Initializes the initialisation parameter block.
465 */
466 static void tms380tr_init_ipb(struct net_local *tp)
467 {
468 tp->ipb.Init_Options = BURST_MODE;
469 tp->ipb.CMD_Status_IV = 0;
470 tp->ipb.TX_IV = 0;
471 tp->ipb.RX_IV = 0;
472 tp->ipb.Ring_Status_IV = 0;
473 tp->ipb.SCB_Clear_IV = 0;
474 tp->ipb.Adapter_CHK_IV = 0;
475 tp->ipb.RX_Burst_Size = BURST_SIZE;
476 tp->ipb.TX_Burst_Size = BURST_SIZE;
477 tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
478 tp->ipb.SCB_Addr = 0;
479 tp->ipb.SSB_Addr = 0;
480
481 return;
482 }
483
484 /*
485 * Initializes the open parameter block.
486 */
487 static void tms380tr_init_opb(struct net_device *dev)
488 {
489 struct net_local *tp;
490 unsigned long Addr;
491 unsigned short RplSize = RPL_SIZE;
492 unsigned short TplSize = TPL_SIZE;
493 unsigned short BufferSize = BUFFER_SIZE;
494 int i;
495
496 tp = netdev_priv(dev);
497
498 tp->ocpl.OPENOptions = 0;
499 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
500 tp->ocpl.FullDuplex = 0;
501 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
502
503 /*
504 * Set node address
505 *
506 * We go ahead and put it in the OPB even though on
507 * most of the generic adapters this isn't required.
508 * Its simpler this way. -- ASF
509 */
510 for (i=0;i<6;i++)
511 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
512
513 tp->ocpl.GroupAddr = 0;
514 tp->ocpl.FunctAddr = 0;
515 tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
516 tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
517 tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
518 tp->ocpl.Reserved = 0;
519 tp->ocpl.TXBufMin = TX_BUF_MIN;
520 tp->ocpl.TXBufMax = TX_BUF_MAX;
521
522 Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
523
524 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
525 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
526
527 return;
528 }
529
530 /*
531 * Send OPEN command to adapter
532 */
533 static void tms380tr_open_adapter(struct net_device *dev)
534 {
535 struct net_local *tp = netdev_priv(dev);
536
537 if(tp->OpenCommandIssued)
538 return;
539
540 tp->OpenCommandIssued = 1;
541 tms380tr_exec_cmd(dev, OC_OPEN);
542
543 return;
544 }
545
546 /*
547 * Clear the adapter's interrupt flag. Clear system interrupt enable
548 * (SINTEN): disable adapter to system interrupts.
549 */
550 static void tms380tr_disable_interrupts(struct net_device *dev)
551 {
552 SIFWRITEB(0, SIFACL);
553
554 return;
555 }
556
557 /*
558 * Set the adapter's interrupt flag. Set system interrupt enable
559 * (SINTEN): enable adapter to system interrupts.
560 */
561 static void tms380tr_enable_interrupts(struct net_device *dev)
562 {
563 SIFWRITEB(ACL_SINTEN, SIFACL);
564
565 return;
566 }
567
568 /*
569 * Put command in command queue, try to execute it.
570 */
571 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
572 {
573 struct net_local *tp = netdev_priv(dev);
574
575 tp->CMDqueue |= Command;
576 tms380tr_chk_outstanding_cmds(dev);
577
578 return;
579 }
580
581 static void tms380tr_timeout(struct net_device *dev)
582 {
583 /*
584 * If we get here, some higher level has decided we are broken.
585 * There should really be a "kick me" function call instead.
586 *
587 * Resetting the token ring adapter takes a long time so just
588 * fake transmission time and go on trying. Our own timeout
589 * routine is in tms380tr_timer_chk()
590 */
591 dev->trans_start = jiffies;
592 netif_wake_queue(dev);
593 }
594
595 /*
596 * Gets skb from system, queues it and checks if it can be sent
597 */
598 static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev)
599 {
600 struct net_local *tp = netdev_priv(dev);
601 int err;
602
603 err = tms380tr_hardware_send_packet(skb, dev);
604 if(tp->TplFree->NextTPLPtr->BusyFlag)
605 netif_stop_queue(dev);
606 return (err);
607 }
608
609 /*
610 * Move frames into adapter tx queue
611 */
612 static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev)
613 {
614 TPL *tpl;
615 short length;
616 unsigned char *buf;
617 unsigned long flags;
618 int i;
619 dma_addr_t dmabuf, newbuf;
620 struct net_local *tp = netdev_priv(dev);
621
622 /* Try to get a free TPL from the chain.
623 *
624 * NOTE: We *must* always leave one unused TPL in the chain,
625 * because otherwise the adapter might send frames twice.
626 */
627 spin_lock_irqsave(&tp->lock, flags);
628 if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
629 if (tms380tr_debug > 0)
630 printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
631 spin_unlock_irqrestore(&tp->lock, flags);
632 return 1;
633 }
634
635 dmabuf = 0;
636
637 /* Is buffer reachable for Busmaster-DMA? */
638
639 length = skb->len;
640 dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE);
641 if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
642 /* Copy frame to local buffer */
643 dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE);
644 dmabuf = 0;
645 i = tp->TplFree->TPLIndex;
646 buf = tp->LocalTxBuffers[i];
647 memcpy(buf, skb->data, length);
648 newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
649 }
650 else {
651 /* Send direct from skb->data */
652 newbuf = dmabuf;
653 buf = skb->data;
654 }
655 /* Source address in packet? */
656 tms380tr_chk_src_addr(buf, dev->dev_addr);
657 tp->LastSendTime = jiffies;
658 tpl = tp->TplFree; /* Get the "free" TPL */
659 tpl->BusyFlag = 1; /* Mark TPL as busy */
660 tp->TplFree = tpl->NextTPLPtr;
661
662 /* Save the skb for delayed return of skb to system */
663 tpl->Skb = skb;
664 tpl->DMABuff = dmabuf;
665 tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
666 tpl->FragList[0].DataAddr = htonl(newbuf);
667
668 /* Write the data length in the transmit list. */
669 tpl->FrameSize = cpu_to_be16((unsigned short)length);
670 tpl->MData = buf;
671
672 /* Transmit the frame and set the status values. */
673 tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
674 | TX_END_FRAME | TX_PASS_SRC_ADDR
675 | TX_FRAME_IRQ);
676
677 /* Let adapter send the frame. */
678 tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
679 spin_unlock_irqrestore(&tp->lock, flags);
680
681 return 0;
682 }
683
684 /*
685 * Write the given value to the 'Status' field of the specified TPL.
686 * NOTE: This function should be used whenever the status of any TPL must be
687 * modified by the driver, because the compiler may otherwise change the
688 * order of instructions such that writing the TPL status may be executed at
689 * an undesireable time. When this function is used, the status is always
690 * written when the function is called.
691 */
692 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
693 {
694 tpl->Status = Status;
695 }
696
697 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
698 {
699 unsigned char SRBit;
700
701 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
702 return;
703 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
704 return;
705
706 SRBit = frame[8] & 0x80;
707 memcpy(&frame[8], hw_addr, 6);
708 frame[8] |= SRBit;
709
710 return;
711 }
712
713 /*
714 * The timer routine: Check if adapter still open and working, reopen if not.
715 */
716 static void tms380tr_timer_chk(unsigned long data)
717 {
718 struct net_device *dev = (struct net_device*)data;
719 struct net_local *tp = netdev_priv(dev);
720
721 if(tp->HaltInProgress)
722 return;
723
724 tms380tr_chk_outstanding_cmds(dev);
725 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
726 && (tp->TplFree != tp->TplBusy))
727 {
728 /* Anything to send, but stalled too long */
729 tp->LastSendTime = jiffies;
730 tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
731 }
732
733 tp->timer.expires = jiffies + 2*HZ;
734 add_timer(&tp->timer);
735
736 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
737 return;
738 tp->ReOpenInProgress = 1;
739 tms380tr_open_adapter(dev);
740
741 return;
742 }
743
744 /*
745 * The typical workload of the driver: Handle the network interface interrupts.
746 */
747 irqreturn_t tms380tr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
748 {
749 struct net_device *dev = dev_id;
750 struct net_local *tp;
751 unsigned short irq_type;
752 int handled = 0;
753
754 if(dev == NULL) {
755 printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
756 return IRQ_NONE;
757 }
758
759 tp = netdev_priv(dev);
760
761 irq_type = SIFREADW(SIFSTS);
762
763 while(irq_type & STS_SYSTEM_IRQ) {
764 handled = 1;
765 irq_type &= STS_IRQ_MASK;
766
767 if(!tms380tr_chk_ssb(tp, irq_type)) {
768 printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
769 break;
770 }
771
772 switch(irq_type) {
773 case STS_IRQ_RECEIVE_STATUS:
774 tms380tr_reset_interrupt(dev);
775 tms380tr_rcv_status_irq(dev);
776 break;
777
778 case STS_IRQ_TRANSMIT_STATUS:
779 /* Check if TRANSMIT.HALT command is complete */
780 if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
781 tp->TransmitCommandActive = 0;
782 tp->TransmitHaltScheduled = 0;
783
784 /* Issue a new transmit command. */
785 tms380tr_exec_cmd(dev, OC_TRANSMIT);
786 }
787
788 tms380tr_reset_interrupt(dev);
789 tms380tr_tx_status_irq(dev);
790 break;
791
792 case STS_IRQ_COMMAND_STATUS:
793 /* The SSB contains status of last command
794 * other than receive/transmit.
795 */
796 tms380tr_cmd_status_irq(dev);
797 break;
798
799 case STS_IRQ_SCB_CLEAR:
800 /* The SCB is free for another command. */
801 tp->ScbInUse = 0;
802 tms380tr_chk_outstanding_cmds(dev);
803 break;
804
805 case STS_IRQ_RING_STATUS:
806 tms380tr_ring_status_irq(dev);
807 break;
808
809 case STS_IRQ_ADAPTER_CHECK:
810 tms380tr_chk_irq(dev);
811 break;
812
813 case STS_IRQ_LLC_STATUS:
814 printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
815 break;
816
817 case STS_IRQ_TIMER:
818 printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
819 break;
820
821 case STS_IRQ_RECEIVE_PENDING:
822 printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
823 break;
824
825 default:
826 printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
827 break;
828 }
829
830 /* Reset system interrupt if not already done. */
831 if(irq_type != STS_IRQ_TRANSMIT_STATUS
832 && irq_type != STS_IRQ_RECEIVE_STATUS) {
833 tms380tr_reset_interrupt(dev);
834 }
835
836 irq_type = SIFREADW(SIFSTS);
837 }
838
839 return IRQ_RETVAL(handled);
840 }
841
842 /*
843 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
844 */
845 static void tms380tr_reset_interrupt(struct net_device *dev)
846 {
847 struct net_local *tp = netdev_priv(dev);
848 SSB *ssb = &tp->ssb;
849
850 /*
851 * [Workaround for "Data Late"]
852 * Set all fields of the SSB to well-defined values so we can
853 * check if the adapter has written the SSB.
854 */
855
856 ssb->STS = (unsigned short) -1;
857 ssb->Parm[0] = (unsigned short) -1;
858 ssb->Parm[1] = (unsigned short) -1;
859 ssb->Parm[2] = (unsigned short) -1;
860
861 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
862 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
863 */
864 tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
865
866 return;
867 }
868
869 /*
870 * Check if the SSB has actually been written by the adapter.
871 */
872 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
873 {
874 SSB *ssb = &tp->ssb; /* The address of the SSB. */
875
876 /* C 0 1 2 INTERRUPT CODE
877 * - - - - --------------
878 * 1 1 1 1 TRANSMIT STATUS
879 * 1 1 1 1 RECEIVE STATUS
880 * 1 ? ? 0 COMMAND STATUS
881 * 0 0 0 0 SCB CLEAR
882 * 1 1 0 0 RING STATUS
883 * 0 0 0 0 ADAPTER CHECK
884 *
885 * 0 = SSB field not affected by interrupt
886 * 1 = SSB field is affected by interrupt
887 *
888 * C = SSB ADDRESS +0: COMMAND
889 * 0 = SSB ADDRESS +2: STATUS 0
890 * 1 = SSB ADDRESS +4: STATUS 1
891 * 2 = SSB ADDRESS +6: STATUS 2
892 */
893
894 /* Check if this interrupt does use the SSB. */
895
896 if(IrqType != STS_IRQ_TRANSMIT_STATUS
897 && IrqType != STS_IRQ_RECEIVE_STATUS
898 && IrqType != STS_IRQ_COMMAND_STATUS
899 && IrqType != STS_IRQ_RING_STATUS)
900 {
901 return (1); /* SSB not involved. */
902 }
903
904 /* Note: All fields of the SSB have been set to all ones (-1) after it
905 * has last been used by the software (see DriverIsr()).
906 *
907 * Check if the affected SSB fields are still unchanged.
908 */
909
910 if(ssb->STS == (unsigned short) -1)
911 return (0); /* Command field not yet available. */
912 if(IrqType == STS_IRQ_COMMAND_STATUS)
913 return (1); /* Status fields not always affected. */
914 if(ssb->Parm[0] == (unsigned short) -1)
915 return (0); /* Status 1 field not yet available. */
916 if(IrqType == STS_IRQ_RING_STATUS)
917 return (1); /* Status 2 & 3 fields not affected. */
918
919 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
920 if(ssb->Parm[1] == (unsigned short) -1)
921 return (0); /* Status 2 field not yet available. */
922 if(ssb->Parm[2] == (unsigned short) -1)
923 return (0); /* Status 3 field not yet available. */
924
925 return (1); /* All SSB fields have been written by the adapter. */
926 }
927
928 /*
929 * Evaluates the command results status in the SSB status field.
930 */
931 static void tms380tr_cmd_status_irq(struct net_device *dev)
932 {
933 struct net_local *tp = netdev_priv(dev);
934 unsigned short ssb_cmd, ssb_parm_0;
935 unsigned short ssb_parm_1;
936 char *open_err = "Open error -";
937 char *code_err = "Open code -";
938
939 /* Copy the ssb values to local variables */
940 ssb_cmd = tp->ssb.STS;
941 ssb_parm_0 = tp->ssb.Parm[0];
942 ssb_parm_1 = tp->ssb.Parm[1];
943
944 if(ssb_cmd == OPEN)
945 {
946 tp->Sleeping = 0;
947 if(!tp->ReOpenInProgress)
948 wake_up_interruptible(&tp->wait_for_tok_int);
949
950 tp->OpenCommandIssued = 0;
951 tp->ScbInUse = 0;
952
953 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
954 {
955 /* Success, the adapter is open. */
956 tp->LobeWireFaultLogged = 0;
957 tp->AdapterOpenFlag = 1;
958 tp->AdapterVirtOpenFlag = 1;
959 tp->TransmitCommandActive = 0;
960 tms380tr_exec_cmd(dev, OC_TRANSMIT);
961 tms380tr_exec_cmd(dev, OC_RECEIVE);
962
963 if(tp->ReOpenInProgress)
964 tp->ReOpenInProgress = 0;
965
966 return;
967 }
968 else /* The adapter did not open. */
969 {
970 if(ssb_parm_0 & NODE_ADDR_ERROR)
971 printk(KERN_INFO "%s: Node address error\n",
972 dev->name);
973 if(ssb_parm_0 & LIST_SIZE_ERROR)
974 printk(KERN_INFO "%s: List size error\n",
975 dev->name);
976 if(ssb_parm_0 & BUF_SIZE_ERROR)
977 printk(KERN_INFO "%s: Buffer size error\n",
978 dev->name);
979 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
980 printk(KERN_INFO "%s: Tx buffer count error\n",
981 dev->name);
982 if(ssb_parm_0 & INVALID_OPEN_OPTION)
983 printk(KERN_INFO "%s: Invalid open option\n",
984 dev->name);
985 if(ssb_parm_0 & OPEN_ERROR)
986 {
987 /* Show the open phase. */
988 switch(ssb_parm_0 & OPEN_PHASES_MASK)
989 {
990 case LOBE_MEDIA_TEST:
991 if(!tp->LobeWireFaultLogged)
992 {
993 tp->LobeWireFaultLogged = 1;
994 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
995 }
996 tp->ReOpenInProgress = 1;
997 tp->AdapterOpenFlag = 0;
998 tp->AdapterVirtOpenFlag = 1;
999 tms380tr_open_adapter(dev);
1000 return;
1001
1002 case PHYSICAL_INSERTION:
1003 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
1004 break;
1005
1006 case ADDRESS_VERIFICATION:
1007 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1008 break;
1009
1010 case PARTICIPATION_IN_RING_POLL:
1011 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1012 break;
1013
1014 case REQUEST_INITIALISATION:
1015 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1016 break;
1017
1018 case FULLDUPLEX_CHECK:
1019 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1020 break;
1021
1022 default:
1023 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1024 break;
1025 }
1026
1027 /* Show the open errors. */
1028 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1029 {
1030 case OPEN_FUNCTION_FAILURE:
1031 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1032 tp->LastOpenStatus =
1033 OPEN_FUNCTION_FAILURE;
1034 break;
1035
1036 case OPEN_SIGNAL_LOSS:
1037 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1038 tp->LastOpenStatus =
1039 OPEN_SIGNAL_LOSS;
1040 break;
1041
1042 case OPEN_TIMEOUT:
1043 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1044 tp->LastOpenStatus =
1045 OPEN_TIMEOUT;
1046 break;
1047
1048 case OPEN_RING_FAILURE:
1049 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1050 tp->LastOpenStatus =
1051 OPEN_RING_FAILURE;
1052 break;
1053
1054 case OPEN_RING_BEACONING:
1055 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1056 tp->LastOpenStatus =
1057 OPEN_RING_BEACONING;
1058 break;
1059
1060 case OPEN_DUPLICATE_NODEADDR:
1061 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1062 tp->LastOpenStatus =
1063 OPEN_DUPLICATE_NODEADDR;
1064 break;
1065
1066 case OPEN_REQUEST_INIT:
1067 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1068 tp->LastOpenStatus =
1069 OPEN_REQUEST_INIT;
1070 break;
1071
1072 case OPEN_REMOVE_RECEIVED:
1073 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1074 tp->LastOpenStatus =
1075 OPEN_REMOVE_RECEIVED;
1076 break;
1077
1078 case OPEN_FULLDUPLEX_SET:
1079 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1080 tp->LastOpenStatus =
1081 OPEN_FULLDUPLEX_SET;
1082 break;
1083
1084 default:
1085 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1086 tp->LastOpenStatus =
1087 OPEN_FUNCTION_FAILURE;
1088 break;
1089 }
1090 }
1091
1092 tp->AdapterOpenFlag = 0;
1093 tp->AdapterVirtOpenFlag = 0;
1094
1095 return;
1096 }
1097 }
1098 else
1099 {
1100 if(ssb_cmd != READ_ERROR_LOG)
1101 return;
1102
1103 /* Add values from the error log table to the MAC
1104 * statistics counters and update the errorlogtable
1105 * memory.
1106 */
1107 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1108 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1109 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1110 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1111 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1112 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1113 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1114 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1115 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1116 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1117 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1118 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1119 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1120 }
1121
1122 return;
1123 }
1124
1125 /*
1126 * The inverse routine to tms380tr_open().
1127 */
1128 int tms380tr_close(struct net_device *dev)
1129 {
1130 struct net_local *tp = netdev_priv(dev);
1131 netif_stop_queue(dev);
1132
1133 del_timer(&tp->timer);
1134
1135 /* Flush the Tx and disable Rx here. */
1136
1137 tp->HaltInProgress = 1;
1138 tms380tr_exec_cmd(dev, OC_CLOSE);
1139 tp->timer.expires = jiffies + 1*HZ;
1140 tp->timer.function = tms380tr_timer_end_wait;
1141 tp->timer.data = (unsigned long)dev;
1142 add_timer(&tp->timer);
1143
1144 tms380tr_enable_interrupts(dev);
1145
1146 tp->Sleeping = 1;
1147 interruptible_sleep_on(&tp->wait_for_tok_int);
1148 tp->TransmitCommandActive = 0;
1149
1150 del_timer(&tp->timer);
1151 tms380tr_disable_interrupts(dev);
1152
1153 #ifdef CONFIG_ISA
1154 if(dev->dma > 0)
1155 {
1156 unsigned long flags=claim_dma_lock();
1157 disable_dma(dev->dma);
1158 release_dma_lock(flags);
1159 }
1160 #endif
1161
1162 SIFWRITEW(0xFF00, SIFCMD);
1163 #if 0
1164 if(dev->dma > 0) /* what the? */
1165 SIFWRITEB(0xff, POSREG);
1166 #endif
1167 tms380tr_cancel_tx_queue(tp);
1168
1169 return (0);
1170 }
1171
1172 /*
1173 * Get the current statistics. This may be called with the card open
1174 * or closed.
1175 */
1176 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1177 {
1178 struct net_local *tp = netdev_priv(dev);
1179
1180 return ((struct net_device_stats *)&tp->MacStat);
1181 }
1182
1183 /*
1184 * Set or clear the multicast filter for this adapter.
1185 */
1186 static void tms380tr_set_multicast_list(struct net_device *dev)
1187 {
1188 struct net_local *tp = netdev_priv(dev);
1189 unsigned int OpenOptions;
1190
1191 OpenOptions = tp->ocpl.OPENOptions &
1192 ~(PASS_ADAPTER_MAC_FRAMES
1193 | PASS_ATTENTION_FRAMES
1194 | PASS_BEACON_MAC_FRAMES
1195 | COPY_ALL_MAC_FRAMES
1196 | COPY_ALL_NON_MAC_FRAMES);
1197
1198 tp->ocpl.FunctAddr = 0;
1199
1200 if(dev->flags & IFF_PROMISC)
1201 /* Enable promiscuous mode */
1202 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1203 COPY_ALL_MAC_FRAMES;
1204 else
1205 {
1206 if(dev->flags & IFF_ALLMULTI)
1207 {
1208 /* Disable promiscuous mode, use normal mode. */
1209 tp->ocpl.FunctAddr = 0xFFFFFFFF;
1210 }
1211 else
1212 {
1213 int i;
1214 struct dev_mc_list *mclist = dev->mc_list;
1215 for (i=0; i< dev->mc_count; i++)
1216 {
1217 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1218 mclist->dmi_addr[2];
1219 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1220 mclist->dmi_addr[3];
1221 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1222 mclist->dmi_addr[4];
1223 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1224 mclist->dmi_addr[5];
1225 mclist = mclist->next;
1226 }
1227 }
1228 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1229 }
1230
1231 tp->ocpl.OPENOptions = OpenOptions;
1232 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1233 return;
1234 }
1235
1236 /*
1237 * Wait for some time (microseconds)
1238 */
1239 void tms380tr_wait(unsigned long time)
1240 {
1241 #if 0
1242 long tmp;
1243
1244 tmp = jiffies + time/(1000000/HZ);
1245 do {
1246 current->state = TASK_INTERRUPTIBLE;
1247 tmp = schedule_timeout(tmp);
1248 } while(time_after(tmp, jiffies));
1249 #else
1250 udelay(time);
1251 #endif
1252 return;
1253 }
1254
1255 /*
1256 * Write a command value to the SIFCMD register
1257 */
1258 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1259 {
1260 unsigned short cmd;
1261 unsigned short SifStsValue;
1262 unsigned long loop_counter;
1263
1264 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1265 cmd = (unsigned short)WriteValue;
1266 loop_counter = 0,5 * 800000;
1267 do {
1268 SifStsValue = SIFREADW(SIFSTS);
1269 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1270 SIFWRITEW(cmd, SIFCMD);
1271
1272 return;
1273 }
1274
1275 /*
1276 * Processes adapter hardware reset, halts adapter and downloads firmware,
1277 * clears the halt bit.
1278 */
1279 static int tms380tr_reset_adapter(struct net_device *dev)
1280 {
1281 struct net_local *tp = netdev_priv(dev);
1282 unsigned short *fw_ptr;
1283 unsigned short count, c, count2;
1284 const struct firmware *fw_entry = NULL;
1285
1286 if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1287 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1288 dev->name, "tms380tr.bin");
1289 return (-1);
1290 }
1291
1292 fw_ptr = (unsigned short *)fw_entry->data;
1293 count2 = fw_entry->size / 2;
1294
1295 /* Hardware adapter reset */
1296 SIFWRITEW(ACL_ARESET, SIFACL);
1297 tms380tr_wait(40);
1298
1299 c = SIFREADW(SIFACL);
1300 tms380tr_wait(20);
1301
1302 if(dev->dma == 0) /* For PCI adapters */
1303 {
1304 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1305 if(tp->setnselout)
1306 c |= (*tp->setnselout)(dev);
1307 }
1308
1309 /* In case a command is pending - forget it */
1310 tp->ScbInUse = 0;
1311
1312 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1313 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1314 c |= ACL_BOOT;
1315 c |= ACL_SINTEN;
1316 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1317 SIFWRITEW(c, SIFACL);
1318 tms380tr_wait(40);
1319
1320 count = 0;
1321 /* Download firmware via DIO interface: */
1322 do {
1323 if (count2 < 3) continue;
1324
1325 /* Download first address part */
1326 SIFWRITEW(*fw_ptr, SIFADX);
1327 fw_ptr++;
1328 count2--;
1329 /* Download second address part */
1330 SIFWRITEW(*fw_ptr, SIFADD);
1331 fw_ptr++;
1332 count2--;
1333
1334 if((count = *fw_ptr) != 0) /* Load loop counter */
1335 {
1336 fw_ptr++; /* Download block data */
1337 count2--;
1338 if (count > count2) continue;
1339
1340 for(; count > 0; count--)
1341 {
1342 SIFWRITEW(*fw_ptr, SIFINC);
1343 fw_ptr++;
1344 count2--;
1345 }
1346 }
1347 else /* Stop, if last block downloaded */
1348 {
1349 c = SIFREADW(SIFACL);
1350 c &= (~ACL_CPHALT | ACL_SINTEN);
1351
1352 /* Clear CPHALT and start BUD */
1353 SIFWRITEW(c, SIFACL);
1354 if (fw_entry)
1355 release_firmware(fw_entry);
1356 return (1);
1357 }
1358 } while(count == 0);
1359
1360 if (fw_entry)
1361 release_firmware(fw_entry);
1362 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1363 return (-1);
1364 }
1365
1366 /*
1367 * Starts bring up diagnostics of token ring adapter and evaluates
1368 * diagnostic results.
1369 */
1370 static int tms380tr_bringup_diags(struct net_device *dev)
1371 {
1372 int loop_cnt, retry_cnt;
1373 unsigned short Status;
1374
1375 tms380tr_wait(HALF_SECOND);
1376 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1377 tms380tr_wait(HALF_SECOND);
1378
1379 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1380
1381 do {
1382 retry_cnt--;
1383 if(tms380tr_debug > 3)
1384 printk(KERN_DEBUG "BUD-Status: ");
1385 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1386 do { /* Inspect BUD results */
1387 loop_cnt--;
1388 tms380tr_wait(HALF_SECOND);
1389 Status = SIFREADW(SIFSTS);
1390 Status &= STS_MASK;
1391
1392 if(tms380tr_debug > 3)
1393 printk(KERN_DEBUG " %04X \n", Status);
1394 /* BUD successfully completed */
1395 if(Status == STS_INITIALIZE)
1396 return (1);
1397 /* Unrecoverable hardware error, BUD not completed? */
1398 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1399 != (STS_ERROR | STS_TEST)));
1400
1401 /* Error preventing completion of BUD */
1402 if(retry_cnt > 0)
1403 {
1404 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1405 dev->name);
1406 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1407 tms380tr_wait(HALF_SECOND);
1408 }
1409 } while(retry_cnt > 0);
1410
1411 Status = SIFREADW(SIFSTS);
1412
1413 printk(KERN_INFO "%s: Hardware error\n", dev->name);
1414 /* Hardware error occurred! */
1415 Status &= 0x001f;
1416 if (Status & 0x0010)
1417 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1418 else if ((Status & 0x000f) > 6)
1419 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1420 else
1421 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1422
1423 return (-1);
1424 }
1425
1426 /*
1427 * Copy initialisation data to adapter memory, beginning at address
1428 * 1:0A00; Starting DMA test and evaluating result bits.
1429 */
1430 static int tms380tr_init_adapter(struct net_device *dev)
1431 {
1432 struct net_local *tp = netdev_priv(dev);
1433
1434 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1435 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1436 0xC5, 0xD9, 0xC3, 0xD4};
1437 void *ptr = (void *)&tp->ipb;
1438 unsigned short *ipb_ptr = (unsigned short *)ptr;
1439 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1440 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1441 unsigned short Status;
1442 int i, loop_cnt, retry_cnt;
1443
1444 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1445 tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1446 tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1447
1448 if(tms380tr_debug > 3)
1449 {
1450 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1451 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1452 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1453 printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
1454 }
1455 /* Maximum: three initialization retries */
1456 retry_cnt = INIT_MAX_RETRIES;
1457
1458 do {
1459 retry_cnt--;
1460
1461 /* Transfer initialization block */
1462 SIFWRITEW(0x0001, SIFADX);
1463
1464 /* To address 0001:0A00 of adapter RAM */
1465 SIFWRITEW(0x0A00, SIFADD);
1466
1467 /* Write 11 words to adapter RAM */
1468 for(i = 0; i < 11; i++)
1469 SIFWRITEW(ipb_ptr[i], SIFINC);
1470
1471 /* Execute SCB adapter command */
1472 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1473
1474 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1475
1476 /* While remaining retries, no error and not completed */
1477 do {
1478 Status = 0;
1479 loop_cnt--;
1480 tms380tr_wait(HALF_SECOND);
1481
1482 /* Mask interesting status bits */
1483 Status = SIFREADW(SIFSTS);
1484 Status &= STS_MASK;
1485 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
1486 && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1487
1488 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1489 {
1490 /* Initialization completed without error */
1491 i = 0;
1492 do { /* Test if contents of SCB is valid */
1493 if(SCB_Test[i] != *(cb_ptr + i))
1494 {
1495 printk(KERN_INFO "%s: DMA failed\n", dev->name);
1496 /* DMA data error: wrong data in SCB */
1497 return (-1);
1498 }
1499 i++;
1500 } while(i < 6);
1501
1502 i = 0;
1503 do { /* Test if contents of SSB is valid */
1504 if(SSB_Test[i] != *(sb_ptr + i))
1505 /* DMA data error: wrong data in SSB */
1506 return (-1);
1507 i++;
1508 } while (i < 8);
1509
1510 return (1); /* Adapter successfully initialized */
1511 }
1512 else
1513 {
1514 if((Status & STS_ERROR) != 0)
1515 {
1516 /* Initialization error occurred */
1517 Status = SIFREADW(SIFSTS);
1518 Status &= STS_ERROR_MASK;
1519 /* ShowInitialisationErrorCode(Status); */
1520 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1521 return (-1); /* Unrecoverable error */
1522 }
1523 else
1524 {
1525 if(retry_cnt > 0)
1526 {
1527 /* Reset adapter and try init again */
1528 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1529 tms380tr_wait(HALF_SECOND);
1530 }
1531 }
1532 }
1533 } while(retry_cnt > 0);
1534
1535 printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1536 return (-1);
1537 }
1538
1539 /*
1540 * Check for outstanding commands in command queue and tries to execute
1541 * command immediately. Corresponding command flag in command queue is cleared.
1542 */
1543 static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1544 {
1545 struct net_local *tp = netdev_priv(dev);
1546 unsigned long Addr = 0;
1547
1548 if(tp->CMDqueue == 0)
1549 return; /* No command execution */
1550
1551 /* If SCB in use: no command */
1552 if(tp->ScbInUse == 1)
1553 return;
1554
1555 /* Check if adapter is opened, avoiding COMMAND_REJECT
1556 * interrupt by the adapter!
1557 */
1558 if(tp->AdapterOpenFlag == 0)
1559 {
1560 if(tp->CMDqueue & OC_OPEN)
1561 {
1562 /* Execute OPEN command */
1563 tp->CMDqueue ^= OC_OPEN;
1564
1565 Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1566 tp->scb.Parm[0] = LOWORD(Addr);
1567 tp->scb.Parm[1] = HIWORD(Addr);
1568 tp->scb.CMD = OPEN;
1569 }
1570 else
1571 /* No OPEN command queued, but adapter closed. Note:
1572 * We'll try to re-open the adapter in DriverPoll()
1573 */
1574 return; /* No adapter command issued */
1575 }
1576 else
1577 {
1578 /* Adapter is open; evaluate command queue: try to execute
1579 * outstanding commands (depending on priority!) CLOSE
1580 * command queued
1581 */
1582 if(tp->CMDqueue & OC_CLOSE)
1583 {
1584 tp->CMDqueue ^= OC_CLOSE;
1585 tp->AdapterOpenFlag = 0;
1586 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1587 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1588 tp->scb.CMD = CLOSE;
1589 if(!tp->HaltInProgress)
1590 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1591 else
1592 tp->CMDqueue = 0; /* no more commands */
1593 }
1594 else
1595 {
1596 if(tp->CMDqueue & OC_RECEIVE)
1597 {
1598 tp->CMDqueue ^= OC_RECEIVE;
1599 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1600 tp->scb.Parm[0] = LOWORD(Addr);
1601 tp->scb.Parm[1] = HIWORD(Addr);
1602 tp->scb.CMD = RECEIVE;
1603 }
1604 else
1605 {
1606 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1607 {
1608 /* NOTE: TRANSMIT.HALT must be checked
1609 * before TRANSMIT.
1610 */
1611 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1612 tp->scb.CMD = TRANSMIT_HALT;
1613
1614 /* Parm[0] and Parm[1] are ignored
1615 * but should be set to zero!
1616 */
1617 tp->scb.Parm[0] = 0;
1618 tp->scb.Parm[1] = 0;
1619 }
1620 else
1621 {
1622 if(tp->CMDqueue & OC_TRANSMIT)
1623 {
1624 /* NOTE: TRANSMIT must be
1625 * checked after TRANSMIT.HALT
1626 */
1627 if(tp->TransmitCommandActive)
1628 {
1629 if(!tp->TransmitHaltScheduled)
1630 {
1631 tp->TransmitHaltScheduled = 1;
1632 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1633 }
1634 tp->TransmitCommandActive = 0;
1635 return;
1636 }
1637
1638 tp->CMDqueue ^= OC_TRANSMIT;
1639 tms380tr_cancel_tx_queue(tp);
1640 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1641 tp->scb.Parm[0] = LOWORD(Addr);
1642 tp->scb.Parm[1] = HIWORD(Addr);
1643 tp->scb.CMD = TRANSMIT;
1644 tp->TransmitCommandActive = 1;
1645 }
1646 else
1647 {
1648 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1649 {
1650 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1651 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1652 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1653 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1654 tp->scb.CMD = MODIFY_OPEN_PARMS;
1655 }
1656 else
1657 {
1658 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1659 {
1660 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1661 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1662 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1663 tp->scb.CMD = SET_FUNCT_ADDR;
1664 }
1665 else
1666 {
1667 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1668 {
1669 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1670 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1671 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1672 tp->scb.CMD = SET_GROUP_ADDR;
1673 }
1674 else
1675 {
1676 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1677 {
1678 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1679 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1680 tp->scb.Parm[0] = LOWORD(Addr);
1681 tp->scb.Parm[1] = HIWORD(Addr);
1682 tp->scb.CMD = READ_ERROR_LOG;
1683 }
1684 else
1685 {
1686 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1687 tp->CMDqueue = 0;
1688 return;
1689 }
1690 }
1691 }
1692 }
1693 }
1694 }
1695 }
1696 }
1697 }
1698
1699 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1700
1701 /* Execute SCB and generate IRQ when done. */
1702 tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1703
1704 return;
1705 }
1706
1707 /*
1708 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1709 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1710 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1711 * circuit fault on the lobe is detected; remove MAC frame received;
1712 * error counter overflow (255); opened adapter is the only station in ring.
1713 * After some of the IRQs the adapter is closed!
1714 */
1715 static void tms380tr_ring_status_irq(struct net_device *dev)
1716 {
1717 struct net_local *tp = netdev_priv(dev);
1718
1719 tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1720
1721 /* First: fill up statistics */
1722 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1723 {
1724 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1725 tp->MacStat.line_errors++;
1726 }
1727
1728 /* Adapter is closed, but initialized */
1729 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1730 {
1731 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1732 dev->name);
1733 tp->MacStat.line_errors++;
1734 }
1735
1736 if(tp->ssb.Parm[0] & RING_RECOVERY)
1737 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1738
1739 /* Counter overflow: read error log */
1740 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1741 {
1742 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1743 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1744 }
1745
1746 /* Adapter is closed, but initialized */
1747 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1748 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1749 dev->name);
1750
1751 /* Adapter is closed, but initialized */
1752 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1753 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1754 dev->name);
1755
1756 if(tp->ssb.Parm[0] & HARD_ERROR)
1757 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1758
1759 if(tp->ssb.Parm[0] & SOFT_ERROR)
1760 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1761
1762 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1763 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1764
1765 if(tp->ssb.Parm[0] & SINGLE_STATION)
1766 printk(KERN_INFO "%s: Single Station\n", dev->name);
1767
1768 /* Check if adapter has been closed */
1769 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1770 {
1771 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1772 "CurrentRingStat %x\n",
1773 dev->name, tp->CurrentRingStatus);
1774 tp->AdapterOpenFlag = 0;
1775 tms380tr_open_adapter(dev);
1776 }
1777
1778 return;
1779 }
1780
1781 /*
1782 * Issued if adapter has encountered an unrecoverable hardware
1783 * or software error.
1784 */
1785 static void tms380tr_chk_irq(struct net_device *dev)
1786 {
1787 int i;
1788 unsigned short AdapterCheckBlock[4];
1789 struct net_local *tp = netdev_priv(dev);
1790
1791 tp->AdapterOpenFlag = 0; /* Adapter closed now */
1792
1793 /* Page number of adapter memory */
1794 SIFWRITEW(0x0001, SIFADX);
1795 /* Address offset */
1796 SIFWRITEW(CHECKADDR, SIFADR);
1797
1798 /* Reading 8 byte adapter check block. */
1799 for(i = 0; i < 4; i++)
1800 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1801
1802 if(tms380tr_debug > 3)
1803 {
1804 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1805 for (i = 0; i < 4; i++)
1806 printk("%04X", AdapterCheckBlock[i]);
1807 printk("\n");
1808 }
1809
1810 switch(AdapterCheckBlock[0])
1811 {
1812 case DIO_PARITY:
1813 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1814 break;
1815
1816 case DMA_READ_ABORT:
1817 printk(KERN_INFO "%s DMA read operation aborted:\n",
1818 dev->name);
1819 switch (AdapterCheckBlock[1])
1820 {
1821 case 0:
1822 printk(KERN_INFO "Timeout\n");
1823 printk(KERN_INFO "Address: %04X %04X\n",
1824 AdapterCheckBlock[2],
1825 AdapterCheckBlock[3]);
1826 break;
1827
1828 case 1:
1829 printk(KERN_INFO "Parity error\n");
1830 printk(KERN_INFO "Address: %04X %04X\n",
1831 AdapterCheckBlock[2],
1832 AdapterCheckBlock[3]);
1833 break;
1834
1835 case 2:
1836 printk(KERN_INFO "Bus error\n");
1837 printk(KERN_INFO "Address: %04X %04X\n",
1838 AdapterCheckBlock[2],
1839 AdapterCheckBlock[3]);
1840 break;
1841
1842 default:
1843 printk(KERN_INFO "Unknown error.\n");
1844 break;
1845 }
1846 break;
1847
1848 case DMA_WRITE_ABORT:
1849 printk(KERN_INFO "%s: DMA write operation aborted: \n",
1850 dev->name);
1851 switch (AdapterCheckBlock[1])
1852 {
1853 case 0:
1854 printk(KERN_INFO "Timeout\n");
1855 printk(KERN_INFO "Address: %04X %04X\n",
1856 AdapterCheckBlock[2],
1857 AdapterCheckBlock[3]);
1858 break;
1859
1860 case 1:
1861 printk(KERN_INFO "Parity error\n");
1862 printk(KERN_INFO "Address: %04X %04X\n",
1863 AdapterCheckBlock[2],
1864 AdapterCheckBlock[3]);
1865 break;
1866
1867 case 2:
1868 printk(KERN_INFO "Bus error\n");
1869 printk(KERN_INFO "Address: %04X %04X\n",
1870 AdapterCheckBlock[2],
1871 AdapterCheckBlock[3]);
1872 break;
1873
1874 default:
1875 printk(KERN_INFO "Unknown error.\n");
1876 break;
1877 }
1878 break;
1879
1880 case ILLEGAL_OP_CODE:
1881 printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1882 dev->name);
1883 /* Parm[0-3]: adapter internal register R13-R15 */
1884 break;
1885
1886 case PARITY_ERRORS:
1887 printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1888 dev->name);
1889 /* Parm[0-3]: adapter internal register R13-R15 */
1890 break;
1891
1892 case RAM_DATA_ERROR:
1893 printk(KERN_INFO "%s: RAM data error\n", dev->name);
1894 /* Parm[0-1]: MSW/LSW address of RAM location. */
1895 break;
1896
1897 case RAM_PARITY_ERROR:
1898 printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1899 /* Parm[0-1]: MSW/LSW address of RAM location. */
1900 break;
1901
1902 case RING_UNDERRUN:
1903 printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1904 dev->name);
1905 break;
1906
1907 case INVALID_IRQ:
1908 printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1909 dev->name);
1910 /* Parm[0-3]: adapter internal register R13-R15 */
1911 break;
1912
1913 case INVALID_ERROR_IRQ:
1914 printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1915 dev->name);
1916 /* Parm[0-3]: adapter internal register R13-R15 */
1917 break;
1918
1919 case INVALID_XOP:
1920 printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1921 dev->name);
1922 /* Parm[0-3]: adapter internal register R13-R15 */
1923 break;
1924
1925 default:
1926 printk(KERN_INFO "%s: Unknown status", dev->name);
1927 break;
1928 }
1929
1930 if(tms380tr_chipset_init(dev) == 1)
1931 {
1932 /* Restart of firmware successful */
1933 tp->AdapterOpenFlag = 1;
1934 }
1935
1936 return;
1937 }
1938
1939 /*
1940 * Internal adapter pointer to RAM data are copied from adapter into
1941 * host system.
1942 */
1943 static int tms380tr_read_ptr(struct net_device *dev)
1944 {
1945 struct net_local *tp = netdev_priv(dev);
1946 unsigned short adapterram;
1947
1948 tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1949 ADAPTER_INT_PTRS, 16);
1950 tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1951 cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1952 return be16_to_cpu(adapterram);
1953 }
1954
1955 /*
1956 * Reads a number of bytes from adapter to system memory.
1957 */
1958 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1959 unsigned short Address, int Length)
1960 {
1961 int i;
1962 unsigned short old_sifadx, old_sifadr, InWord;
1963
1964 /* Save the current values */
1965 old_sifadx = SIFREADW(SIFADX);
1966 old_sifadr = SIFREADW(SIFADR);
1967
1968 /* Page number of adapter memory */
1969 SIFWRITEW(0x0001, SIFADX);
1970 /* Address offset in adapter RAM */
1971 SIFWRITEW(Address, SIFADR);
1972
1973 /* Copy len byte from adapter memory to system data area. */
1974 i = 0;
1975 for(;;)
1976 {
1977 InWord = SIFREADW(SIFINC);
1978
1979 *(Data + i) = HIBYTE(InWord); /* Write first byte */
1980 if(++i == Length) /* All is done break */
1981 break;
1982
1983 *(Data + i) = LOBYTE(InWord); /* Write second byte */
1984 if (++i == Length) /* All is done break */
1985 break;
1986 }
1987
1988 /* Restore original values */
1989 SIFWRITEW(old_sifadx, SIFADX);
1990 SIFWRITEW(old_sifadr, SIFADR);
1991
1992 return;
1993 }
1994
1995 /*
1996 * Cancel all queued packets in the transmission queue.
1997 */
1998 static void tms380tr_cancel_tx_queue(struct net_local* tp)
1999 {
2000 TPL *tpl;
2001
2002 /*
2003 * NOTE: There must not be an active TRANSMIT command pending, when
2004 * this function is called.
2005 */
2006 if(tp->TransmitCommandActive)
2007 return;
2008
2009 for(;;)
2010 {
2011 tpl = tp->TplBusy;
2012 if(!tpl->BusyFlag)
2013 break;
2014 /* "Remove" TPL from busy list. */
2015 tp->TplBusy = tpl->NextTPLPtr;
2016 tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
2017 tpl->BusyFlag = 0; /* "free" TPL */
2018
2019 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2020 if (tpl->DMABuff)
2021 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2022 dev_kfree_skb_any(tpl->Skb);
2023 }
2024
2025 return;
2026 }
2027
2028 /*
2029 * This function is called whenever a transmit interrupt is generated by the
2030 * adapter. For a command complete interrupt, it is checked if we have to
2031 * issue a new transmit command or not.
2032 */
2033 static void tms380tr_tx_status_irq(struct net_device *dev)
2034 {
2035 struct net_local *tp = netdev_priv(dev);
2036 unsigned char HighByte, HighAc, LowAc;
2037 TPL *tpl;
2038
2039 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2040 * available, because the CLEAR SSB command has already been issued.
2041 *
2042 * Process all complete transmissions.
2043 */
2044
2045 for(;;)
2046 {
2047 tpl = tp->TplBusy;
2048 if(!tpl->BusyFlag || (tpl->Status
2049 & (TX_VALID | TX_FRAME_COMPLETE))
2050 != TX_FRAME_COMPLETE)
2051 {
2052 break;
2053 }
2054
2055 /* "Remove" TPL from busy list. */
2056 tp->TplBusy = tpl->NextTPLPtr ;
2057
2058 /* Check the transmit status field only for directed frames*/
2059 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2060 {
2061 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2062 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2063 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2064
2065 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2066 {
2067 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2068 dev->name,
2069 *(unsigned long *)&tpl->MData[2+2]);
2070 }
2071 else
2072 {
2073 if(tms380tr_debug > 3)
2074 printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2075 dev->name);
2076 }
2077 }
2078 else
2079 {
2080 if(!DIRECTED_FRAME(tpl))
2081 {
2082 if(tms380tr_debug > 3)
2083 printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2084 dev->name);
2085 }
2086 }
2087
2088 tp->MacStat.tx_packets++;
2089 if (tpl->DMABuff)
2090 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2091 dev_kfree_skb_irq(tpl->Skb);
2092 tpl->BusyFlag = 0; /* "free" TPL */
2093 }
2094
2095 if(!tp->TplFree->NextTPLPtr->BusyFlag)
2096 netif_wake_queue(dev);
2097 return;
2098 }
2099
2100 /*
2101 * Called if a frame receive interrupt is generated by the adapter.
2102 * Check if the frame is valid and indicate it to system.
2103 */
2104 static void tms380tr_rcv_status_irq(struct net_device *dev)
2105 {
2106 struct net_local *tp = netdev_priv(dev);
2107 unsigned char *ReceiveDataPtr;
2108 struct sk_buff *skb;
2109 unsigned int Length, Length2;
2110 RPL *rpl;
2111 RPL *SaveHead;
2112 dma_addr_t dmabuf;
2113
2114 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2115 * available, because the CLEAR SSB command has already been issued.
2116 *
2117 * Process all complete receives.
2118 */
2119
2120 for(;;)
2121 {
2122 rpl = tp->RplHead;
2123 if(rpl->Status & RX_VALID)
2124 break; /* RPL still in use by adapter */
2125
2126 /* Forward RPLHead pointer to next list. */
2127 SaveHead = tp->RplHead;
2128 tp->RplHead = rpl->NextRPLPtr;
2129
2130 /* Get the frame size (Byte swap for Intel).
2131 * Do this early (see workaround comment below)
2132 */
2133 Length = be16_to_cpu((unsigned short)rpl->FrameSize);
2134
2135 /* Check if the Frame_Start, Frame_End and
2136 * Frame_Complete bits are set.
2137 */
2138 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2139 == VALID_SINGLE_BUFFER_FRAME)
2140 {
2141 ReceiveDataPtr = rpl->MData;
2142
2143 /* Workaround for delayed write of FrameSize on ISA
2144 * (FrameSize is false but valid-bit is reset)
2145 * Frame size is set to zero when the RPL is freed.
2146 * Length2 is there because there have also been
2147 * cases where the FrameSize was partially written
2148 */
2149 Length2 = be16_to_cpu((unsigned short)rpl->FrameSize);
2150
2151 if(Length == 0 || Length != Length2)
2152 {
2153 tp->RplHead = SaveHead;
2154 break; /* Return to tms380tr_interrupt */
2155 }
2156 tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2157
2158 if(tms380tr_debug > 3)
2159 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2160 dev->name, Length, Length);
2161
2162 /* Indicate the received frame to system the
2163 * adapter does the Source-Routing padding for
2164 * us. See: OpenOptions in tms380tr_init_opb()
2165 */
2166 skb = rpl->Skb;
2167 if(rpl->SkbStat == SKB_UNAVAILABLE)
2168 {
2169 /* Try again to allocate skb */
2170 skb = dev_alloc_skb(tp->MaxPacketSize);
2171 if(skb == NULL)
2172 {
2173 /* Update Stats ?? */
2174 }
2175 else
2176 {
2177 skb->dev = dev;
2178 skb_put(skb, tp->MaxPacketSize);
2179 rpl->SkbStat = SKB_DATA_COPY;
2180 ReceiveDataPtr = rpl->MData;
2181 }
2182 }
2183
2184 if(skb && (rpl->SkbStat == SKB_DATA_COPY
2185 || rpl->SkbStat == SKB_DMA_DIRECT))
2186 {
2187 if(rpl->SkbStat == SKB_DATA_COPY)
2188 memcpy(skb->data, ReceiveDataPtr, Length);
2189
2190 /* Deliver frame to system */
2191 rpl->Skb = NULL;
2192 skb_trim(skb,Length);
2193 skb->protocol = tr_type_trans(skb,dev);
2194 netif_rx(skb);
2195 dev->last_rx = jiffies;
2196 }
2197 }
2198 else /* Invalid frame */
2199 {
2200 if(rpl->Skb != NULL)
2201 dev_kfree_skb_irq(rpl->Skb);
2202
2203 /* Skip list. */
2204 if(rpl->Status & RX_START_FRAME)
2205 /* Frame start bit is set -> overflow. */
2206 tp->MacStat.rx_errors++;
2207 }
2208 if (rpl->DMABuff)
2209 dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE);
2210 rpl->DMABuff = 0;
2211
2212 /* Allocate new skb for rpl */
2213 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2214 /* skb == NULL ? then use local buffer */
2215 if(rpl->Skb == NULL)
2216 {
2217 rpl->SkbStat = SKB_UNAVAILABLE;
2218 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2219 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2220 }
2221 else /* skb != NULL */
2222 {
2223 rpl->Skb->dev = dev;
2224 skb_put(rpl->Skb, tp->MaxPacketSize);
2225
2226 /* Data unreachable for DMA ? then use local buffer */
2227 dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
2228 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2229 {
2230 rpl->SkbStat = SKB_DATA_COPY;
2231 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2232 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2233 }
2234 else
2235 {
2236 /* DMA directly in skb->data */
2237 rpl->SkbStat = SKB_DMA_DIRECT;
2238 rpl->FragList[0].DataAddr = htonl(dmabuf);
2239 rpl->MData = rpl->Skb->data;
2240 rpl->DMABuff = dmabuf;
2241 }
2242 }
2243
2244 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2245 rpl->FrameSize = 0;
2246
2247 /* Pass the last RPL back to the adapter */
2248 tp->RplTail->FrameSize = 0;
2249
2250 /* Reset the CSTAT field in the list. */
2251 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2252
2253 /* Current RPL becomes last one in list. */
2254 tp->RplTail = tp->RplTail->NextRPLPtr;
2255
2256 /* Inform adapter about RPL valid. */
2257 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2258 }
2259
2260 return;
2261 }
2262
2263 /*
2264 * This function should be used whenever the status of any RPL must be
2265 * modified by the driver, because the compiler may otherwise change the
2266 * order of instructions such that writing the RPL status may be executed
2267 * at an undesireable time. When this function is used, the status is
2268 * always written when the function is called.
2269 */
2270 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2271 {
2272 rpl->Status = Status;
2273
2274 return;
2275 }
2276
2277 /*
2278 * The function updates the statistic counters in mac->MacStat.
2279 * It differtiates between directed and broadcast/multicast ( ==functional)
2280 * frames.
2281 */
2282 static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2283 unsigned int Length)
2284 {
2285 tp->MacStat.rx_packets++;
2286 tp->MacStat.rx_bytes += Length;
2287
2288 /* Test functional bit */
2289 if(DataPtr[2] & GROUP_BIT)
2290 tp->MacStat.multicast++;
2291
2292 return;
2293 }
2294
2295 static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2296 {
2297 struct net_local *tp = netdev_priv(dev);
2298 struct sockaddr *saddr = addr;
2299
2300 if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2301 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2302 return -EIO;
2303 }
2304 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2305 return 0;
2306 }
2307
2308 #if TMS380TR_DEBUG > 0
2309 /*
2310 * Dump Packet (data)
2311 */
2312 static void tms380tr_dump(unsigned char *Data, int length)
2313 {
2314 int i, j;
2315
2316 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2317 {
2318 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2319 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2320 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2321 }
2322
2323 return;
2324 }
2325 #endif
2326
2327 void tmsdev_term(struct net_device *dev)
2328 {
2329 struct net_local *tp;
2330
2331 tp = netdev_priv(dev);
2332 dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2333 DMA_BIDIRECTIONAL);
2334 }
2335
2336 int tmsdev_init(struct net_device *dev, struct device *pdev)
2337 {
2338 struct net_local *tms_local;
2339
2340 memset(dev->priv, 0, sizeof(struct net_local));
2341 tms_local = netdev_priv(dev);
2342 init_waitqueue_head(&tms_local->wait_for_tok_int);
2343 if (pdev->dma_mask)
2344 tms_local->dmalimit = *pdev->dma_mask;
2345 else
2346 return -ENOMEM;
2347 tms_local->pdev = pdev;
2348 tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2349 sizeof(struct net_local), DMA_BIDIRECTIONAL);
2350 if (tms_local->dmabuffer + sizeof(struct net_local) >
2351 tms_local->dmalimit)
2352 {
2353 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2354 dev->name);
2355 tmsdev_term(dev);
2356 return -ENOMEM;
2357 }
2358
2359 /* These can be overridden by the card driver if needed */
2360 dev->open = tms380tr_open;
2361 dev->stop = tms380tr_close;
2362 dev->do_ioctl = NULL;
2363 dev->hard_start_xmit = tms380tr_send_packet;
2364 dev->tx_timeout = tms380tr_timeout;
2365 dev->watchdog_timeo = HZ;
2366 dev->get_stats = tms380tr_get_stats;
2367 dev->set_multicast_list = &tms380tr_set_multicast_list;
2368 dev->set_mac_address = tms380tr_set_mac_address;
2369
2370 return 0;
2371 }
2372
2373 EXPORT_SYMBOL(tms380tr_open);
2374 EXPORT_SYMBOL(tms380tr_close);
2375 EXPORT_SYMBOL(tms380tr_interrupt);
2376 EXPORT_SYMBOL(tmsdev_init);
2377 EXPORT_SYMBOL(tmsdev_term);
2378 EXPORT_SYMBOL(tms380tr_wait);
2379
2380 #ifdef MODULE
2381
2382 static struct module *TMS380_module = NULL;
2383
2384 int init_module(void)
2385 {
2386 printk(KERN_DEBUG "%s", version);
2387
2388 TMS380_module = &__this_module;
2389 return 0;
2390 }
2391
2392 void cleanup_module(void)
2393 {
2394 TMS380_module = NULL;
2395 }
2396 #endif
2397
2398 MODULE_LICENSE("GPL");
2399
Verdex Pro support