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x86: cpa: move clflush_cache_range()
[wrt350n-kernel.git] / drivers / net / tokenring / tms380tr.c
blobd5fa36d3651591d62b8f1fb3cb305500b187d551
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 skb_copy_from_linear_data(skb, buf, 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)
748 {
749 struct net_device *dev = dev_id;
750 struct net_local *tp;
751 unsigned short irq_type;
752 int handled = 0;
753
754 tp = netdev_priv(dev);
755
756 irq_type = SIFREADW(SIFSTS);
757
758 while(irq_type & STS_SYSTEM_IRQ) {
759 handled = 1;
760 irq_type &= STS_IRQ_MASK;
761
762 if(!tms380tr_chk_ssb(tp, irq_type)) {
763 printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
764 break;
765 }
766
767 switch(irq_type) {
768 case STS_IRQ_RECEIVE_STATUS:
769 tms380tr_reset_interrupt(dev);
770 tms380tr_rcv_status_irq(dev);
771 break;
772
773 case STS_IRQ_TRANSMIT_STATUS:
774 /* Check if TRANSMIT.HALT command is complete */
775 if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
776 tp->TransmitCommandActive = 0;
777 tp->TransmitHaltScheduled = 0;
778
779 /* Issue a new transmit command. */
780 tms380tr_exec_cmd(dev, OC_TRANSMIT);
781 }
782
783 tms380tr_reset_interrupt(dev);
784 tms380tr_tx_status_irq(dev);
785 break;
786
787 case STS_IRQ_COMMAND_STATUS:
788 /* The SSB contains status of last command
789 * other than receive/transmit.
790 */
791 tms380tr_cmd_status_irq(dev);
792 break;
793
794 case STS_IRQ_SCB_CLEAR:
795 /* The SCB is free for another command. */
796 tp->ScbInUse = 0;
797 tms380tr_chk_outstanding_cmds(dev);
798 break;
799
800 case STS_IRQ_RING_STATUS:
801 tms380tr_ring_status_irq(dev);
802 break;
803
804 case STS_IRQ_ADAPTER_CHECK:
805 tms380tr_chk_irq(dev);
806 break;
807
808 case STS_IRQ_LLC_STATUS:
809 printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
810 break;
811
812 case STS_IRQ_TIMER:
813 printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
814 break;
815
816 case STS_IRQ_RECEIVE_PENDING:
817 printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
818 break;
819
820 default:
821 printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
822 break;
823 }
824
825 /* Reset system interrupt if not already done. */
826 if(irq_type != STS_IRQ_TRANSMIT_STATUS
827 && irq_type != STS_IRQ_RECEIVE_STATUS) {
828 tms380tr_reset_interrupt(dev);
829 }
830
831 irq_type = SIFREADW(SIFSTS);
832 }
833
834 return IRQ_RETVAL(handled);
835 }
836
837 /*
838 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
839 */
840 static void tms380tr_reset_interrupt(struct net_device *dev)
841 {
842 struct net_local *tp = netdev_priv(dev);
843 SSB *ssb = &tp->ssb;
844
845 /*
846 * [Workaround for "Data Late"]
847 * Set all fields of the SSB to well-defined values so we can
848 * check if the adapter has written the SSB.
849 */
850
851 ssb->STS = (unsigned short) -1;
852 ssb->Parm[0] = (unsigned short) -1;
853 ssb->Parm[1] = (unsigned short) -1;
854 ssb->Parm[2] = (unsigned short) -1;
855
856 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
857 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
858 */
859 tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
860
861 return;
862 }
863
864 /*
865 * Check if the SSB has actually been written by the adapter.
866 */
867 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
868 {
869 SSB *ssb = &tp->ssb; /* The address of the SSB. */
870
871 /* C 0 1 2 INTERRUPT CODE
872 * - - - - --------------
873 * 1 1 1 1 TRANSMIT STATUS
874 * 1 1 1 1 RECEIVE STATUS
875 * 1 ? ? 0 COMMAND STATUS
876 * 0 0 0 0 SCB CLEAR
877 * 1 1 0 0 RING STATUS
878 * 0 0 0 0 ADAPTER CHECK
879 *
880 * 0 = SSB field not affected by interrupt
881 * 1 = SSB field is affected by interrupt
882 *
883 * C = SSB ADDRESS +0: COMMAND
884 * 0 = SSB ADDRESS +2: STATUS 0
885 * 1 = SSB ADDRESS +4: STATUS 1
886 * 2 = SSB ADDRESS +6: STATUS 2
887 */
888
889 /* Check if this interrupt does use the SSB. */
890
891 if(IrqType != STS_IRQ_TRANSMIT_STATUS
892 && IrqType != STS_IRQ_RECEIVE_STATUS
893 && IrqType != STS_IRQ_COMMAND_STATUS
894 && IrqType != STS_IRQ_RING_STATUS)
895 {
896 return (1); /* SSB not involved. */
897 }
898
899 /* Note: All fields of the SSB have been set to all ones (-1) after it
900 * has last been used by the software (see DriverIsr()).
901 *
902 * Check if the affected SSB fields are still unchanged.
903 */
904
905 if(ssb->STS == (unsigned short) -1)
906 return (0); /* Command field not yet available. */
907 if(IrqType == STS_IRQ_COMMAND_STATUS)
908 return (1); /* Status fields not always affected. */
909 if(ssb->Parm[0] == (unsigned short) -1)
910 return (0); /* Status 1 field not yet available. */
911 if(IrqType == STS_IRQ_RING_STATUS)
912 return (1); /* Status 2 & 3 fields not affected. */
913
914 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
915 if(ssb->Parm[1] == (unsigned short) -1)
916 return (0); /* Status 2 field not yet available. */
917 if(ssb->Parm[2] == (unsigned short) -1)
918 return (0); /* Status 3 field not yet available. */
919
920 return (1); /* All SSB fields have been written by the adapter. */
921 }
922
923 /*
924 * Evaluates the command results status in the SSB status field.
925 */
926 static void tms380tr_cmd_status_irq(struct net_device *dev)
927 {
928 struct net_local *tp = netdev_priv(dev);
929 unsigned short ssb_cmd, ssb_parm_0;
930 unsigned short ssb_parm_1;
931 char *open_err = "Open error -";
932 char *code_err = "Open code -";
933
934 /* Copy the ssb values to local variables */
935 ssb_cmd = tp->ssb.STS;
936 ssb_parm_0 = tp->ssb.Parm[0];
937 ssb_parm_1 = tp->ssb.Parm[1];
938
939 if(ssb_cmd == OPEN)
940 {
941 tp->Sleeping = 0;
942 if(!tp->ReOpenInProgress)
943 wake_up_interruptible(&tp->wait_for_tok_int);
944
945 tp->OpenCommandIssued = 0;
946 tp->ScbInUse = 0;
947
948 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
949 {
950 /* Success, the adapter is open. */
951 tp->LobeWireFaultLogged = 0;
952 tp->AdapterOpenFlag = 1;
953 tp->AdapterVirtOpenFlag = 1;
954 tp->TransmitCommandActive = 0;
955 tms380tr_exec_cmd(dev, OC_TRANSMIT);
956 tms380tr_exec_cmd(dev, OC_RECEIVE);
957
958 if(tp->ReOpenInProgress)
959 tp->ReOpenInProgress = 0;
960
961 return;
962 }
963 else /* The adapter did not open. */
964 {
965 if(ssb_parm_0 & NODE_ADDR_ERROR)
966 printk(KERN_INFO "%s: Node address error\n",
967 dev->name);
968 if(ssb_parm_0 & LIST_SIZE_ERROR)
969 printk(KERN_INFO "%s: List size error\n",
970 dev->name);
971 if(ssb_parm_0 & BUF_SIZE_ERROR)
972 printk(KERN_INFO "%s: Buffer size error\n",
973 dev->name);
974 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
975 printk(KERN_INFO "%s: Tx buffer count error\n",
976 dev->name);
977 if(ssb_parm_0 & INVALID_OPEN_OPTION)
978 printk(KERN_INFO "%s: Invalid open option\n",
979 dev->name);
980 if(ssb_parm_0 & OPEN_ERROR)
981 {
982 /* Show the open phase. */
983 switch(ssb_parm_0 & OPEN_PHASES_MASK)
984 {
985 case LOBE_MEDIA_TEST:
986 if(!tp->LobeWireFaultLogged)
987 {
988 tp->LobeWireFaultLogged = 1;
989 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
990 }
991 tp->ReOpenInProgress = 1;
992 tp->AdapterOpenFlag = 0;
993 tp->AdapterVirtOpenFlag = 1;
994 tms380tr_open_adapter(dev);
995 return;
996
997 case PHYSICAL_INSERTION:
998 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
999 break;
1000
1001 case ADDRESS_VERIFICATION:
1002 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1003 break;
1004
1005 case PARTICIPATION_IN_RING_POLL:
1006 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1007 break;
1008
1009 case REQUEST_INITIALISATION:
1010 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1011 break;
1012
1013 case FULLDUPLEX_CHECK:
1014 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1015 break;
1016
1017 default:
1018 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1019 break;
1020 }
1021
1022 /* Show the open errors. */
1023 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1024 {
1025 case OPEN_FUNCTION_FAILURE:
1026 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1027 tp->LastOpenStatus =
1028 OPEN_FUNCTION_FAILURE;
1029 break;
1030
1031 case OPEN_SIGNAL_LOSS:
1032 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1033 tp->LastOpenStatus =
1034 OPEN_SIGNAL_LOSS;
1035 break;
1036
1037 case OPEN_TIMEOUT:
1038 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1039 tp->LastOpenStatus =
1040 OPEN_TIMEOUT;
1041 break;
1042
1043 case OPEN_RING_FAILURE:
1044 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1045 tp->LastOpenStatus =
1046 OPEN_RING_FAILURE;
1047 break;
1048
1049 case OPEN_RING_BEACONING:
1050 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1051 tp->LastOpenStatus =
1052 OPEN_RING_BEACONING;
1053 break;
1054
1055 case OPEN_DUPLICATE_NODEADDR:
1056 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1057 tp->LastOpenStatus =
1058 OPEN_DUPLICATE_NODEADDR;
1059 break;
1060
1061 case OPEN_REQUEST_INIT:
1062 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1063 tp->LastOpenStatus =
1064 OPEN_REQUEST_INIT;
1065 break;
1066
1067 case OPEN_REMOVE_RECEIVED:
1068 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1069 tp->LastOpenStatus =
1070 OPEN_REMOVE_RECEIVED;
1071 break;
1072
1073 case OPEN_FULLDUPLEX_SET:
1074 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1075 tp->LastOpenStatus =
1076 OPEN_FULLDUPLEX_SET;
1077 break;
1078
1079 default:
1080 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1081 tp->LastOpenStatus =
1082 OPEN_FUNCTION_FAILURE;
1083 break;
1084 }
1085 }
1086
1087 tp->AdapterOpenFlag = 0;
1088 tp->AdapterVirtOpenFlag = 0;
1089
1090 return;
1091 }
1092 }
1093 else
1094 {
1095 if(ssb_cmd != READ_ERROR_LOG)
1096 return;
1097
1098 /* Add values from the error log table to the MAC
1099 * statistics counters and update the errorlogtable
1100 * memory.
1101 */
1102 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1103 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1104 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1105 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1106 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1107 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1108 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1109 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1110 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1111 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1112 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1113 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1114 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1115 }
1116
1117 return;
1118 }
1119
1120 /*
1121 * The inverse routine to tms380tr_open().
1122 */
1123 int tms380tr_close(struct net_device *dev)
1124 {
1125 struct net_local *tp = netdev_priv(dev);
1126 netif_stop_queue(dev);
1127
1128 del_timer(&tp->timer);
1129
1130 /* Flush the Tx and disable Rx here. */
1131
1132 tp->HaltInProgress = 1;
1133 tms380tr_exec_cmd(dev, OC_CLOSE);
1134 tp->timer.expires = jiffies + 1*HZ;
1135 tp->timer.function = tms380tr_timer_end_wait;
1136 tp->timer.data = (unsigned long)dev;
1137 add_timer(&tp->timer);
1138
1139 tms380tr_enable_interrupts(dev);
1140
1141 tp->Sleeping = 1;
1142 interruptible_sleep_on(&tp->wait_for_tok_int);
1143 tp->TransmitCommandActive = 0;
1144
1145 del_timer(&tp->timer);
1146 tms380tr_disable_interrupts(dev);
1147
1148 #ifdef CONFIG_ISA
1149 if(dev->dma > 0)
1150 {
1151 unsigned long flags=claim_dma_lock();
1152 disable_dma(dev->dma);
1153 release_dma_lock(flags);
1154 }
1155 #endif
1156
1157 SIFWRITEW(0xFF00, SIFCMD);
1158 #if 0
1159 if(dev->dma > 0) /* what the? */
1160 SIFWRITEB(0xff, POSREG);
1161 #endif
1162 tms380tr_cancel_tx_queue(tp);
1163
1164 return (0);
1165 }
1166
1167 /*
1168 * Get the current statistics. This may be called with the card open
1169 * or closed.
1170 */
1171 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1172 {
1173 struct net_local *tp = netdev_priv(dev);
1174
1175 return ((struct net_device_stats *)&tp->MacStat);
1176 }
1177
1178 /*
1179 * Set or clear the multicast filter for this adapter.
1180 */
1181 static void tms380tr_set_multicast_list(struct net_device *dev)
1182 {
1183 struct net_local *tp = netdev_priv(dev);
1184 unsigned int OpenOptions;
1185
1186 OpenOptions = tp->ocpl.OPENOptions &
1187 ~(PASS_ADAPTER_MAC_FRAMES
1188 | PASS_ATTENTION_FRAMES
1189 | PASS_BEACON_MAC_FRAMES
1190 | COPY_ALL_MAC_FRAMES
1191 | COPY_ALL_NON_MAC_FRAMES);
1192
1193 tp->ocpl.FunctAddr = 0;
1194
1195 if(dev->flags & IFF_PROMISC)
1196 /* Enable promiscuous mode */
1197 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1198 COPY_ALL_MAC_FRAMES;
1199 else
1200 {
1201 if(dev->flags & IFF_ALLMULTI)
1202 {
1203 /* Disable promiscuous mode, use normal mode. */
1204 tp->ocpl.FunctAddr = 0xFFFFFFFF;
1205 }
1206 else
1207 {
1208 int i;
1209 struct dev_mc_list *mclist = dev->mc_list;
1210 for (i=0; i< dev->mc_count; i++)
1211 {
1212 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1213 mclist->dmi_addr[2];
1214 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1215 mclist->dmi_addr[3];
1216 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1217 mclist->dmi_addr[4];
1218 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1219 mclist->dmi_addr[5];
1220 mclist = mclist->next;
1221 }
1222 }
1223 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1224 }
1225
1226 tp->ocpl.OPENOptions = OpenOptions;
1227 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1228 return;
1229 }
1230
1231 /*
1232 * Wait for some time (microseconds)
1233 */
1234 void tms380tr_wait(unsigned long time)
1235 {
1236 #if 0
1237 long tmp;
1238
1239 tmp = jiffies + time/(1000000/HZ);
1240 do {
1241 tmp = schedule_timeout_interruptible(tmp);
1242 } while(time_after(tmp, jiffies));
1243 #else
1244 udelay(time);
1245 #endif
1246 return;
1247 }
1248
1249 /*
1250 * Write a command value to the SIFCMD register
1251 */
1252 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1253 {
1254 unsigned short cmd;
1255 unsigned short SifStsValue;
1256 unsigned long loop_counter;
1257
1258 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1259 cmd = (unsigned short)WriteValue;
1260 loop_counter = 0,5 * 800000;
1261 do {
1262 SifStsValue = SIFREADW(SIFSTS);
1263 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1264 SIFWRITEW(cmd, SIFCMD);
1265
1266 return;
1267 }
1268
1269 /*
1270 * Processes adapter hardware reset, halts adapter and downloads firmware,
1271 * clears the halt bit.
1272 */
1273 static int tms380tr_reset_adapter(struct net_device *dev)
1274 {
1275 struct net_local *tp = netdev_priv(dev);
1276 unsigned short *fw_ptr;
1277 unsigned short count, c, count2;
1278 const struct firmware *fw_entry = NULL;
1279
1280 if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1281 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1282 dev->name, "tms380tr.bin");
1283 return (-1);
1284 }
1285
1286 fw_ptr = (unsigned short *)fw_entry->data;
1287 count2 = fw_entry->size / 2;
1288
1289 /* Hardware adapter reset */
1290 SIFWRITEW(ACL_ARESET, SIFACL);
1291 tms380tr_wait(40);
1292
1293 c = SIFREADW(SIFACL);
1294 tms380tr_wait(20);
1295
1296 if(dev->dma == 0) /* For PCI adapters */
1297 {
1298 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1299 if(tp->setnselout)
1300 c |= (*tp->setnselout)(dev);
1301 }
1302
1303 /* In case a command is pending - forget it */
1304 tp->ScbInUse = 0;
1305
1306 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1307 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1308 c |= ACL_BOOT;
1309 c |= ACL_SINTEN;
1310 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1311 SIFWRITEW(c, SIFACL);
1312 tms380tr_wait(40);
1313
1314 count = 0;
1315 /* Download firmware via DIO interface: */
1316 do {
1317 if (count2 < 3) continue;
1318
1319 /* Download first address part */
1320 SIFWRITEW(*fw_ptr, SIFADX);
1321 fw_ptr++;
1322 count2--;
1323 /* Download second address part */
1324 SIFWRITEW(*fw_ptr, SIFADD);
1325 fw_ptr++;
1326 count2--;
1327
1328 if((count = *fw_ptr) != 0) /* Load loop counter */
1329 {
1330 fw_ptr++; /* Download block data */
1331 count2--;
1332 if (count > count2) continue;
1333
1334 for(; count > 0; count--)
1335 {
1336 SIFWRITEW(*fw_ptr, SIFINC);
1337 fw_ptr++;
1338 count2--;
1339 }
1340 }
1341 else /* Stop, if last block downloaded */
1342 {
1343 c = SIFREADW(SIFACL);
1344 c &= (~ACL_CPHALT | ACL_SINTEN);
1345
1346 /* Clear CPHALT and start BUD */
1347 SIFWRITEW(c, SIFACL);
1348 if (fw_entry)
1349 release_firmware(fw_entry);
1350 return (1);
1351 }
1352 } while(count == 0);
1353
1354 if (fw_entry)
1355 release_firmware(fw_entry);
1356 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1357 return (-1);
1358 }
1359
1360 /*
1361 * Starts bring up diagnostics of token ring adapter and evaluates
1362 * diagnostic results.
1363 */
1364 static int tms380tr_bringup_diags(struct net_device *dev)
1365 {
1366 int loop_cnt, retry_cnt;
1367 unsigned short Status;
1368
1369 tms380tr_wait(HALF_SECOND);
1370 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1371 tms380tr_wait(HALF_SECOND);
1372
1373 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1374
1375 do {
1376 retry_cnt--;
1377 if(tms380tr_debug > 3)
1378 printk(KERN_DEBUG "BUD-Status: ");
1379 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1380 do { /* Inspect BUD results */
1381 loop_cnt--;
1382 tms380tr_wait(HALF_SECOND);
1383 Status = SIFREADW(SIFSTS);
1384 Status &= STS_MASK;
1385
1386 if(tms380tr_debug > 3)
1387 printk(KERN_DEBUG " %04X \n", Status);
1388 /* BUD successfully completed */
1389 if(Status == STS_INITIALIZE)
1390 return (1);
1391 /* Unrecoverable hardware error, BUD not completed? */
1392 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1393 != (STS_ERROR | STS_TEST)));
1394
1395 /* Error preventing completion of BUD */
1396 if(retry_cnt > 0)
1397 {
1398 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1399 dev->name);
1400 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1401 tms380tr_wait(HALF_SECOND);
1402 }
1403 } while(retry_cnt > 0);
1404
1405 Status = SIFREADW(SIFSTS);
1406
1407 printk(KERN_INFO "%s: Hardware error\n", dev->name);
1408 /* Hardware error occurred! */
1409 Status &= 0x001f;
1410 if (Status & 0x0010)
1411 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1412 else if ((Status & 0x000f) > 6)
1413 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1414 else
1415 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1416
1417 return (-1);
1418 }
1419
1420 /*
1421 * Copy initialisation data to adapter memory, beginning at address
1422 * 1:0A00; Starting DMA test and evaluating result bits.
1423 */
1424 static int tms380tr_init_adapter(struct net_device *dev)
1425 {
1426 struct net_local *tp = netdev_priv(dev);
1427
1428 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1429 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1430 0xC5, 0xD9, 0xC3, 0xD4};
1431 void *ptr = (void *)&tp->ipb;
1432 unsigned short *ipb_ptr = (unsigned short *)ptr;
1433 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1434 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1435 unsigned short Status;
1436 int i, loop_cnt, retry_cnt;
1437
1438 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1439 tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1440 tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1441
1442 if(tms380tr_debug > 3)
1443 {
1444 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1445 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1446 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1447 printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
1448 }
1449 /* Maximum: three initialization retries */
1450 retry_cnt = INIT_MAX_RETRIES;
1451
1452 do {
1453 retry_cnt--;
1454
1455 /* Transfer initialization block */
1456 SIFWRITEW(0x0001, SIFADX);
1457
1458 /* To address 0001:0A00 of adapter RAM */
1459 SIFWRITEW(0x0A00, SIFADD);
1460
1461 /* Write 11 words to adapter RAM */
1462 for(i = 0; i < 11; i++)
1463 SIFWRITEW(ipb_ptr[i], SIFINC);
1464
1465 /* Execute SCB adapter command */
1466 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1467
1468 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1469
1470 /* While remaining retries, no error and not completed */
1471 do {
1472 Status = 0;
1473 loop_cnt--;
1474 tms380tr_wait(HALF_SECOND);
1475
1476 /* Mask interesting status bits */
1477 Status = SIFREADW(SIFSTS);
1478 Status &= STS_MASK;
1479 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
1480 && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1481
1482 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1483 {
1484 /* Initialization completed without error */
1485 i = 0;
1486 do { /* Test if contents of SCB is valid */
1487 if(SCB_Test[i] != *(cb_ptr + i))
1488 {
1489 printk(KERN_INFO "%s: DMA failed\n", dev->name);
1490 /* DMA data error: wrong data in SCB */
1491 return (-1);
1492 }
1493 i++;
1494 } while(i < 6);
1495
1496 i = 0;
1497 do { /* Test if contents of SSB is valid */
1498 if(SSB_Test[i] != *(sb_ptr + i))
1499 /* DMA data error: wrong data in SSB */
1500 return (-1);
1501 i++;
1502 } while (i < 8);
1503
1504 return (1); /* Adapter successfully initialized */
1505 }
1506 else
1507 {
1508 if((Status & STS_ERROR) != 0)
1509 {
1510 /* Initialization error occurred */
1511 Status = SIFREADW(SIFSTS);
1512 Status &= STS_ERROR_MASK;
1513 /* ShowInitialisationErrorCode(Status); */
1514 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1515 return (-1); /* Unrecoverable error */
1516 }
1517 else
1518 {
1519 if(retry_cnt > 0)
1520 {
1521 /* Reset adapter and try init again */
1522 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1523 tms380tr_wait(HALF_SECOND);
1524 }
1525 }
1526 }
1527 } while(retry_cnt > 0);
1528
1529 printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1530 return (-1);
1531 }
1532
1533 /*
1534 * Check for outstanding commands in command queue and tries to execute
1535 * command immediately. Corresponding command flag in command queue is cleared.
1536 */
1537 static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1538 {
1539 struct net_local *tp = netdev_priv(dev);
1540 unsigned long Addr = 0;
1541
1542 if(tp->CMDqueue == 0)
1543 return; /* No command execution */
1544
1545 /* If SCB in use: no command */
1546 if(tp->ScbInUse == 1)
1547 return;
1548
1549 /* Check if adapter is opened, avoiding COMMAND_REJECT
1550 * interrupt by the adapter!
1551 */
1552 if(tp->AdapterOpenFlag == 0)
1553 {
1554 if(tp->CMDqueue & OC_OPEN)
1555 {
1556 /* Execute OPEN command */
1557 tp->CMDqueue ^= OC_OPEN;
1558
1559 Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1560 tp->scb.Parm[0] = LOWORD(Addr);
1561 tp->scb.Parm[1] = HIWORD(Addr);
1562 tp->scb.CMD = OPEN;
1563 }
1564 else
1565 /* No OPEN command queued, but adapter closed. Note:
1566 * We'll try to re-open the adapter in DriverPoll()
1567 */
1568 return; /* No adapter command issued */
1569 }
1570 else
1571 {
1572 /* Adapter is open; evaluate command queue: try to execute
1573 * outstanding commands (depending on priority!) CLOSE
1574 * command queued
1575 */
1576 if(tp->CMDqueue & OC_CLOSE)
1577 {
1578 tp->CMDqueue ^= OC_CLOSE;
1579 tp->AdapterOpenFlag = 0;
1580 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1581 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1582 tp->scb.CMD = CLOSE;
1583 if(!tp->HaltInProgress)
1584 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1585 else
1586 tp->CMDqueue = 0; /* no more commands */
1587 }
1588 else
1589 {
1590 if(tp->CMDqueue & OC_RECEIVE)
1591 {
1592 tp->CMDqueue ^= OC_RECEIVE;
1593 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1594 tp->scb.Parm[0] = LOWORD(Addr);
1595 tp->scb.Parm[1] = HIWORD(Addr);
1596 tp->scb.CMD = RECEIVE;
1597 }
1598 else
1599 {
1600 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1601 {
1602 /* NOTE: TRANSMIT.HALT must be checked
1603 * before TRANSMIT.
1604 */
1605 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1606 tp->scb.CMD = TRANSMIT_HALT;
1607
1608 /* Parm[0] and Parm[1] are ignored
1609 * but should be set to zero!
1610 */
1611 tp->scb.Parm[0] = 0;
1612 tp->scb.Parm[1] = 0;
1613 }
1614 else
1615 {
1616 if(tp->CMDqueue & OC_TRANSMIT)
1617 {
1618 /* NOTE: TRANSMIT must be
1619 * checked after TRANSMIT.HALT
1620 */
1621 if(tp->TransmitCommandActive)
1622 {
1623 if(!tp->TransmitHaltScheduled)
1624 {
1625 tp->TransmitHaltScheduled = 1;
1626 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1627 }
1628 tp->TransmitCommandActive = 0;
1629 return;
1630 }
1631
1632 tp->CMDqueue ^= OC_TRANSMIT;
1633 tms380tr_cancel_tx_queue(tp);
1634 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1635 tp->scb.Parm[0] = LOWORD(Addr);
1636 tp->scb.Parm[1] = HIWORD(Addr);
1637 tp->scb.CMD = TRANSMIT;
1638 tp->TransmitCommandActive = 1;
1639 }
1640 else
1641 {
1642 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1643 {
1644 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1645 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1646 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1647 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1648 tp->scb.CMD = MODIFY_OPEN_PARMS;
1649 }
1650 else
1651 {
1652 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1653 {
1654 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1655 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1656 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1657 tp->scb.CMD = SET_FUNCT_ADDR;
1658 }
1659 else
1660 {
1661 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1662 {
1663 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1664 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1665 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1666 tp->scb.CMD = SET_GROUP_ADDR;
1667 }
1668 else
1669 {
1670 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1671 {
1672 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1673 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1674 tp->scb.Parm[0] = LOWORD(Addr);
1675 tp->scb.Parm[1] = HIWORD(Addr);
1676 tp->scb.CMD = READ_ERROR_LOG;
1677 }
1678 else
1679 {
1680 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1681 tp->CMDqueue = 0;
1682 return;
1683 }
1684 }
1685 }
1686 }
1687 }
1688 }
1689 }
1690 }
1691 }
1692
1693 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1694
1695 /* Execute SCB and generate IRQ when done. */
1696 tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1697
1698 return;
1699 }
1700
1701 /*
1702 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1703 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1704 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1705 * circuit fault on the lobe is detected; remove MAC frame received;
1706 * error counter overflow (255); opened adapter is the only station in ring.
1707 * After some of the IRQs the adapter is closed!
1708 */
1709 static void tms380tr_ring_status_irq(struct net_device *dev)
1710 {
1711 struct net_local *tp = netdev_priv(dev);
1712
1713 tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1714
1715 /* First: fill up statistics */
1716 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1717 {
1718 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1719 tp->MacStat.line_errors++;
1720 }
1721
1722 /* Adapter is closed, but initialized */
1723 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1724 {
1725 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1726 dev->name);
1727 tp->MacStat.line_errors++;
1728 }
1729
1730 if(tp->ssb.Parm[0] & RING_RECOVERY)
1731 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1732
1733 /* Counter overflow: read error log */
1734 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1735 {
1736 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1737 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1738 }
1739
1740 /* Adapter is closed, but initialized */
1741 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1742 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1743 dev->name);
1744
1745 /* Adapter is closed, but initialized */
1746 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1747 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1748 dev->name);
1749
1750 if(tp->ssb.Parm[0] & HARD_ERROR)
1751 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1752
1753 if(tp->ssb.Parm[0] & SOFT_ERROR)
1754 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1755
1756 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1757 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1758
1759 if(tp->ssb.Parm[0] & SINGLE_STATION)
1760 printk(KERN_INFO "%s: Single Station\n", dev->name);
1761
1762 /* Check if adapter has been closed */
1763 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1764 {
1765 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1766 "CurrentRingStat %x\n",
1767 dev->name, tp->CurrentRingStatus);
1768 tp->AdapterOpenFlag = 0;
1769 tms380tr_open_adapter(dev);
1770 }
1771
1772 return;
1773 }
1774
1775 /*
1776 * Issued if adapter has encountered an unrecoverable hardware
1777 * or software error.
1778 */
1779 static void tms380tr_chk_irq(struct net_device *dev)
1780 {
1781 int i;
1782 unsigned short AdapterCheckBlock[4];
1783 struct net_local *tp = netdev_priv(dev);
1784
1785 tp->AdapterOpenFlag = 0; /* Adapter closed now */
1786
1787 /* Page number of adapter memory */
1788 SIFWRITEW(0x0001, SIFADX);
1789 /* Address offset */
1790 SIFWRITEW(CHECKADDR, SIFADR);
1791
1792 /* Reading 8 byte adapter check block. */
1793 for(i = 0; i < 4; i++)
1794 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1795
1796 if(tms380tr_debug > 3)
1797 {
1798 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1799 for (i = 0; i < 4; i++)
1800 printk("%04X", AdapterCheckBlock[i]);
1801 printk("\n");
1802 }
1803
1804 switch(AdapterCheckBlock[0])
1805 {
1806 case DIO_PARITY:
1807 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1808 break;
1809
1810 case DMA_READ_ABORT:
1811 printk(KERN_INFO "%s DMA read operation aborted:\n",
1812 dev->name);
1813 switch (AdapterCheckBlock[1])
1814 {
1815 case 0:
1816 printk(KERN_INFO "Timeout\n");
1817 printk(KERN_INFO "Address: %04X %04X\n",
1818 AdapterCheckBlock[2],
1819 AdapterCheckBlock[3]);
1820 break;
1821
1822 case 1:
1823 printk(KERN_INFO "Parity error\n");
1824 printk(KERN_INFO "Address: %04X %04X\n",
1825 AdapterCheckBlock[2],
1826 AdapterCheckBlock[3]);
1827 break;
1828
1829 case 2:
1830 printk(KERN_INFO "Bus error\n");
1831 printk(KERN_INFO "Address: %04X %04X\n",
1832 AdapterCheckBlock[2],
1833 AdapterCheckBlock[3]);
1834 break;
1835
1836 default:
1837 printk(KERN_INFO "Unknown error.\n");
1838 break;
1839 }
1840 break;
1841
1842 case DMA_WRITE_ABORT:
1843 printk(KERN_INFO "%s: DMA write operation aborted: \n",
1844 dev->name);
1845 switch (AdapterCheckBlock[1])
1846 {
1847 case 0:
1848 printk(KERN_INFO "Timeout\n");
1849 printk(KERN_INFO "Address: %04X %04X\n",
1850 AdapterCheckBlock[2],
1851 AdapterCheckBlock[3]);
1852 break;
1853
1854 case 1:
1855 printk(KERN_INFO "Parity error\n");
1856 printk(KERN_INFO "Address: %04X %04X\n",
1857 AdapterCheckBlock[2],
1858 AdapterCheckBlock[3]);
1859 break;
1860
1861 case 2:
1862 printk(KERN_INFO "Bus error\n");
1863 printk(KERN_INFO "Address: %04X %04X\n",
1864 AdapterCheckBlock[2],
1865 AdapterCheckBlock[3]);
1866 break;
1867
1868 default:
1869 printk(KERN_INFO "Unknown error.\n");
1870 break;
1871 }
1872 break;
1873
1874 case ILLEGAL_OP_CODE:
1875 printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1876 dev->name);
1877 /* Parm[0-3]: adapter internal register R13-R15 */
1878 break;
1879
1880 case PARITY_ERRORS:
1881 printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1882 dev->name);
1883 /* Parm[0-3]: adapter internal register R13-R15 */
1884 break;
1885
1886 case RAM_DATA_ERROR:
1887 printk(KERN_INFO "%s: RAM data error\n", dev->name);
1888 /* Parm[0-1]: MSW/LSW address of RAM location. */
1889 break;
1890
1891 case RAM_PARITY_ERROR:
1892 printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1893 /* Parm[0-1]: MSW/LSW address of RAM location. */
1894 break;
1895
1896 case RING_UNDERRUN:
1897 printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1898 dev->name);
1899 break;
1900
1901 case INVALID_IRQ:
1902 printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1903 dev->name);
1904 /* Parm[0-3]: adapter internal register R13-R15 */
1905 break;
1906
1907 case INVALID_ERROR_IRQ:
1908 printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1909 dev->name);
1910 /* Parm[0-3]: adapter internal register R13-R15 */
1911 break;
1912
1913 case INVALID_XOP:
1914 printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1915 dev->name);
1916 /* Parm[0-3]: adapter internal register R13-R15 */
1917 break;
1918
1919 default:
1920 printk(KERN_INFO "%s: Unknown status", dev->name);
1921 break;
1922 }
1923
1924 if(tms380tr_chipset_init(dev) == 1)
1925 {
1926 /* Restart of firmware successful */
1927 tp->AdapterOpenFlag = 1;
1928 }
1929
1930 return;
1931 }
1932
1933 /*
1934 * Internal adapter pointer to RAM data are copied from adapter into
1935 * host system.
1936 */
1937 static int tms380tr_read_ptr(struct net_device *dev)
1938 {
1939 struct net_local *tp = netdev_priv(dev);
1940 unsigned short adapterram;
1941
1942 tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1943 ADAPTER_INT_PTRS, 16);
1944 tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1945 cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1946 return be16_to_cpu(adapterram);
1947 }
1948
1949 /*
1950 * Reads a number of bytes from adapter to system memory.
1951 */
1952 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1953 unsigned short Address, int Length)
1954 {
1955 int i;
1956 unsigned short old_sifadx, old_sifadr, InWord;
1957
1958 /* Save the current values */
1959 old_sifadx = SIFREADW(SIFADX);
1960 old_sifadr = SIFREADW(SIFADR);
1961
1962 /* Page number of adapter memory */
1963 SIFWRITEW(0x0001, SIFADX);
1964 /* Address offset in adapter RAM */
1965 SIFWRITEW(Address, SIFADR);
1966
1967 /* Copy len byte from adapter memory to system data area. */
1968 i = 0;
1969 for(;;)
1970 {
1971 InWord = SIFREADW(SIFINC);
1972
1973 *(Data + i) = HIBYTE(InWord); /* Write first byte */
1974 if(++i == Length) /* All is done break */
1975 break;
1976
1977 *(Data + i) = LOBYTE(InWord); /* Write second byte */
1978 if (++i == Length) /* All is done break */
1979 break;
1980 }
1981
1982 /* Restore original values */
1983 SIFWRITEW(old_sifadx, SIFADX);
1984 SIFWRITEW(old_sifadr, SIFADR);
1985
1986 return;
1987 }
1988
1989 /*
1990 * Cancel all queued packets in the transmission queue.
1991 */
1992 static void tms380tr_cancel_tx_queue(struct net_local* tp)
1993 {
1994 TPL *tpl;
1995
1996 /*
1997 * NOTE: There must not be an active TRANSMIT command pending, when
1998 * this function is called.
1999 */
2000 if(tp->TransmitCommandActive)
2001 return;
2002
2003 for(;;)
2004 {
2005 tpl = tp->TplBusy;
2006 if(!tpl->BusyFlag)
2007 break;
2008 /* "Remove" TPL from busy list. */
2009 tp->TplBusy = tpl->NextTPLPtr;
2010 tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
2011 tpl->BusyFlag = 0; /* "free" TPL */
2012
2013 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2014 if (tpl->DMABuff)
2015 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2016 dev_kfree_skb_any(tpl->Skb);
2017 }
2018
2019 return;
2020 }
2021
2022 /*
2023 * This function is called whenever a transmit interrupt is generated by the
2024 * adapter. For a command complete interrupt, it is checked if we have to
2025 * issue a new transmit command or not.
2026 */
2027 static void tms380tr_tx_status_irq(struct net_device *dev)
2028 {
2029 struct net_local *tp = netdev_priv(dev);
2030 unsigned char HighByte, HighAc, LowAc;
2031 TPL *tpl;
2032
2033 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2034 * available, because the CLEAR SSB command has already been issued.
2035 *
2036 * Process all complete transmissions.
2037 */
2038
2039 for(;;)
2040 {
2041 tpl = tp->TplBusy;
2042 if(!tpl->BusyFlag || (tpl->Status
2043 & (TX_VALID | TX_FRAME_COMPLETE))
2044 != TX_FRAME_COMPLETE)
2045 {
2046 break;
2047 }
2048
2049 /* "Remove" TPL from busy list. */
2050 tp->TplBusy = tpl->NextTPLPtr ;
2051
2052 /* Check the transmit status field only for directed frames*/
2053 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2054 {
2055 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2056 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2057 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2058
2059 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2060 {
2061 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2062 dev->name,
2063 *(unsigned long *)&tpl->MData[2+2]);
2064 }
2065 else
2066 {
2067 if(tms380tr_debug > 3)
2068 printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2069 dev->name);
2070 }
2071 }
2072 else
2073 {
2074 if(!DIRECTED_FRAME(tpl))
2075 {
2076 if(tms380tr_debug > 3)
2077 printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2078 dev->name);
2079 }
2080 }
2081
2082 tp->MacStat.tx_packets++;
2083 if (tpl->DMABuff)
2084 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2085 dev_kfree_skb_irq(tpl->Skb);
2086 tpl->BusyFlag = 0; /* "free" TPL */
2087 }
2088
2089 if(!tp->TplFree->NextTPLPtr->BusyFlag)
2090 netif_wake_queue(dev);
2091 return;
2092 }
2093
2094 /*
2095 * Called if a frame receive interrupt is generated by the adapter.
2096 * Check if the frame is valid and indicate it to system.
2097 */
2098 static void tms380tr_rcv_status_irq(struct net_device *dev)
2099 {
2100 struct net_local *tp = netdev_priv(dev);
2101 unsigned char *ReceiveDataPtr;
2102 struct sk_buff *skb;
2103 unsigned int Length, Length2;
2104 RPL *rpl;
2105 RPL *SaveHead;
2106 dma_addr_t dmabuf;
2107
2108 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2109 * available, because the CLEAR SSB command has already been issued.
2110 *
2111 * Process all complete receives.
2112 */
2113
2114 for(;;)
2115 {
2116 rpl = tp->RplHead;
2117 if(rpl->Status & RX_VALID)
2118 break; /* RPL still in use by adapter */
2119
2120 /* Forward RPLHead pointer to next list. */
2121 SaveHead = tp->RplHead;
2122 tp->RplHead = rpl->NextRPLPtr;
2123
2124 /* Get the frame size (Byte swap for Intel).
2125 * Do this early (see workaround comment below)
2126 */
2127 Length = be16_to_cpu(rpl->FrameSize);
2128
2129 /* Check if the Frame_Start, Frame_End and
2130 * Frame_Complete bits are set.
2131 */
2132 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2133 == VALID_SINGLE_BUFFER_FRAME)
2134 {
2135 ReceiveDataPtr = rpl->MData;
2136
2137 /* Workaround for delayed write of FrameSize on ISA
2138 * (FrameSize is false but valid-bit is reset)
2139 * Frame size is set to zero when the RPL is freed.
2140 * Length2 is there because there have also been
2141 * cases where the FrameSize was partially written
2142 */
2143 Length2 = be16_to_cpu(rpl->FrameSize);
2144
2145 if(Length == 0 || Length != Length2)
2146 {
2147 tp->RplHead = SaveHead;
2148 break; /* Return to tms380tr_interrupt */
2149 }
2150 tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2151
2152 if(tms380tr_debug > 3)
2153 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2154 dev->name, Length, Length);
2155
2156 /* Indicate the received frame to system the
2157 * adapter does the Source-Routing padding for
2158 * us. See: OpenOptions in tms380tr_init_opb()
2159 */
2160 skb = rpl->Skb;
2161 if(rpl->SkbStat == SKB_UNAVAILABLE)
2162 {
2163 /* Try again to allocate skb */
2164 skb = dev_alloc_skb(tp->MaxPacketSize);
2165 if(skb == NULL)
2166 {
2167 /* Update Stats ?? */
2168 }
2169 else
2170 {
2171 skb_put(skb, tp->MaxPacketSize);
2172 rpl->SkbStat = SKB_DATA_COPY;
2173 ReceiveDataPtr = rpl->MData;
2174 }
2175 }
2176
2177 if(skb && (rpl->SkbStat == SKB_DATA_COPY
2178 || rpl->SkbStat == SKB_DMA_DIRECT))
2179 {
2180 if(rpl->SkbStat == SKB_DATA_COPY)
2181 skb_copy_to_linear_data(skb, ReceiveDataPtr,
2182 Length);
2183
2184 /* Deliver frame to system */
2185 rpl->Skb = NULL;
2186 skb_trim(skb,Length);
2187 skb->protocol = tr_type_trans(skb,dev);
2188 netif_rx(skb);
2189 dev->last_rx = jiffies;
2190 }
2191 }
2192 else /* Invalid frame */
2193 {
2194 if(rpl->Skb != NULL)
2195 dev_kfree_skb_irq(rpl->Skb);
2196
2197 /* Skip list. */
2198 if(rpl->Status & RX_START_FRAME)
2199 /* Frame start bit is set -> overflow. */
2200 tp->MacStat.rx_errors++;
2201 }
2202 if (rpl->DMABuff)
2203 dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE);
2204 rpl->DMABuff = 0;
2205
2206 /* Allocate new skb for rpl */
2207 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2208 /* skb == NULL ? then use local buffer */
2209 if(rpl->Skb == NULL)
2210 {
2211 rpl->SkbStat = SKB_UNAVAILABLE;
2212 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2213 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2214 }
2215 else /* skb != NULL */
2216 {
2217 rpl->Skb->dev = dev;
2218 skb_put(rpl->Skb, tp->MaxPacketSize);
2219
2220 /* Data unreachable for DMA ? then use local buffer */
2221 dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
2222 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2223 {
2224 rpl->SkbStat = SKB_DATA_COPY;
2225 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2226 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2227 }
2228 else
2229 {
2230 /* DMA directly in skb->data */
2231 rpl->SkbStat = SKB_DMA_DIRECT;
2232 rpl->FragList[0].DataAddr = htonl(dmabuf);
2233 rpl->MData = rpl->Skb->data;
2234 rpl->DMABuff = dmabuf;
2235 }
2236 }
2237
2238 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2239 rpl->FrameSize = 0;
2240
2241 /* Pass the last RPL back to the adapter */
2242 tp->RplTail->FrameSize = 0;
2243
2244 /* Reset the CSTAT field in the list. */
2245 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2246
2247 /* Current RPL becomes last one in list. */
2248 tp->RplTail = tp->RplTail->NextRPLPtr;
2249
2250 /* Inform adapter about RPL valid. */
2251 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2252 }
2253
2254 return;
2255 }
2256
2257 /*
2258 * This function should be used whenever the status of any RPL must be
2259 * modified by the driver, because the compiler may otherwise change the
2260 * order of instructions such that writing the RPL status may be executed
2261 * at an undesireable time. When this function is used, the status is
2262 * always written when the function is called.
2263 */
2264 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2265 {
2266 rpl->Status = Status;
2267
2268 return;
2269 }
2270
2271 /*
2272 * The function updates the statistic counters in mac->MacStat.
2273 * It differtiates between directed and broadcast/multicast ( ==functional)
2274 * frames.
2275 */
2276 static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2277 unsigned int Length)
2278 {
2279 tp->MacStat.rx_packets++;
2280 tp->MacStat.rx_bytes += Length;
2281
2282 /* Test functional bit */
2283 if(DataPtr[2] & GROUP_BIT)
2284 tp->MacStat.multicast++;
2285
2286 return;
2287 }
2288
2289 static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2290 {
2291 struct net_local *tp = netdev_priv(dev);
2292 struct sockaddr *saddr = addr;
2293
2294 if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2295 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2296 return -EIO;
2297 }
2298 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2299 return 0;
2300 }
2301
2302 #if TMS380TR_DEBUG > 0
2303 /*
2304 * Dump Packet (data)
2305 */
2306 static void tms380tr_dump(unsigned char *Data, int length)
2307 {
2308 int i, j;
2309
2310 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2311 {
2312 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2313 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2314 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2315 }
2316
2317 return;
2318 }
2319 #endif
2320
2321 void tmsdev_term(struct net_device *dev)
2322 {
2323 struct net_local *tp;
2324
2325 tp = netdev_priv(dev);
2326 dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2327 DMA_BIDIRECTIONAL);
2328 }
2329
2330 int tmsdev_init(struct net_device *dev, struct device *pdev)
2331 {
2332 struct net_local *tms_local;
2333
2334 memset(dev->priv, 0, sizeof(struct net_local));
2335 tms_local = netdev_priv(dev);
2336 init_waitqueue_head(&tms_local->wait_for_tok_int);
2337 if (pdev->dma_mask)
2338 tms_local->dmalimit = *pdev->dma_mask;
2339 else
2340 return -ENOMEM;
2341 tms_local->pdev = pdev;
2342 tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2343 sizeof(struct net_local), DMA_BIDIRECTIONAL);
2344 if (tms_local->dmabuffer + sizeof(struct net_local) >
2345 tms_local->dmalimit)
2346 {
2347 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2348 dev->name);
2349 tmsdev_term(dev);
2350 return -ENOMEM;
2351 }
2352
2353 /* These can be overridden by the card driver if needed */
2354 dev->open = tms380tr_open;
2355 dev->stop = tms380tr_close;
2356 dev->do_ioctl = NULL;
2357 dev->hard_start_xmit = tms380tr_send_packet;
2358 dev->tx_timeout = tms380tr_timeout;
2359 dev->watchdog_timeo = HZ;
2360 dev->get_stats = tms380tr_get_stats;
2361 dev->set_multicast_list = &tms380tr_set_multicast_list;
2362 dev->set_mac_address = tms380tr_set_mac_address;
2363
2364 return 0;
2365 }
2366
2367 EXPORT_SYMBOL(tms380tr_open);
2368 EXPORT_SYMBOL(tms380tr_close);
2369 EXPORT_SYMBOL(tms380tr_interrupt);
2370 EXPORT_SYMBOL(tmsdev_init);
2371 EXPORT_SYMBOL(tmsdev_term);
2372 EXPORT_SYMBOL(tms380tr_wait);
2373
2374 #ifdef MODULE
2375
2376 static struct module *TMS380_module = NULL;
2377
2378 int init_module(void)
2379 {
2380 printk(KERN_DEBUG "%s", version);
2381
2382 TMS380_module = &__this_module;
2383 return 0;
2384 }
2385
2386 void cleanup_module(void)
2387 {
2388 TMS380_module = NULL;
2389 }
2390 #endif
2391
2392 MODULE_LICENSE("GPL");
2393
WRT350N Kernel Patches