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net: trans_start cleanups
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / tokenring / tms380tr.c
blob8cb126a800702018899362395e32814e3367242f
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
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/string.h>
89 #include <linux/time.h>
90 #include <linux/errno.h>
91 #include <linux/init.h>
92 #include <linux/dma-mapping.h>
93 #include <linux/delay.h>
94 #include <linux/netdevice.h>
95 #include <linux/etherdevice.h>
96 #include <linux/skbuff.h>
97 #include <linux/trdevice.h>
98 #include <linux/firmware.h>
99 #include <linux/bitops.h>
100
101 #include <asm/system.h>
102 #include <asm/io.h>
103 #include <asm/dma.h>
104 #include <asm/irq.h>
105 #include <asm/uaccess.h>
106
107 #include "tms380tr.h" /* Our Stuff */
108
109 /* Use 0 for production, 1 for verification, 2 for debug, and
110 * 3 for very verbose debug.
111 */
112 #ifndef TMS380TR_DEBUG
113 #define TMS380TR_DEBUG 0
114 #endif
115 static unsigned int tms380tr_debug = TMS380TR_DEBUG;
116
117 /* Index to functions, as function prototypes.
118 * Alphabetical by function name.
119 */
120
121 /* "A" */
122 /* "B" */
123 static int tms380tr_bringup_diags(struct net_device *dev);
124 /* "C" */
125 static void tms380tr_cancel_tx_queue(struct net_local* tp);
126 static int tms380tr_chipset_init(struct net_device *dev);
127 static void tms380tr_chk_irq(struct net_device *dev);
128 static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
129 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
130 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
131 int tms380tr_close(struct net_device *dev);
132 static void tms380tr_cmd_status_irq(struct net_device *dev);
133 /* "D" */
134 static void tms380tr_disable_interrupts(struct net_device *dev);
135 #if TMS380TR_DEBUG > 0
136 static void tms380tr_dump(unsigned char *Data, int length);
137 #endif
138 /* "E" */
139 static void tms380tr_enable_interrupts(struct net_device *dev);
140 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
141 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
142 /* "F" */
143 /* "G" */
144 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
145 /* "H" */
146 static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
147 struct net_device *dev);
148 /* "I" */
149 static int tms380tr_init_adapter(struct net_device *dev);
150 static void tms380tr_init_ipb(struct net_local *tp);
151 static void tms380tr_init_net_local(struct net_device *dev);
152 static void tms380tr_init_opb(struct net_device *dev);
153 /* "M" */
154 /* "O" */
155 int tms380tr_open(struct net_device *dev);
156 static void tms380tr_open_adapter(struct net_device *dev);
157 /* "P" */
158 /* "R" */
159 static void tms380tr_rcv_status_irq(struct net_device *dev);
160 static int tms380tr_read_ptr(struct net_device *dev);
161 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
162 unsigned short Address, int Length);
163 static int tms380tr_reset_adapter(struct net_device *dev);
164 static void tms380tr_reset_interrupt(struct net_device *dev);
165 static void tms380tr_ring_status_irq(struct net_device *dev);
166 /* "S" */
167 static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
168 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) \
184 (((struct net_local *)netdev_priv(dev))->sifreadb(dev, reg))
185 #define SIFWRITEB(val, reg) \
186 (((struct net_local *)netdev_priv(dev))->sifwriteb(dev, val, reg))
187 #define SIFREADW(reg) \
188 (((struct net_local *)netdev_priv(dev))->sifreadw(dev, reg))
189 #define SIFWRITEW(val, reg) \
190 (((struct net_local *)netdev_priv(dev))->sifwritew(dev, val, reg))
191
192
193
194 #if 0 /* TMS380TR_DEBUG > 0 */
195 static int madgemc_sifprobe(struct net_device *dev)
196 {
197 unsigned char old, chk1, chk2;
198
199 old = SIFREADB(SIFADR); /* Get the old SIFADR value */
200
201 chk1 = 0; /* Begin with check value 0 */
202 do {
203 madgemc_setregpage(dev, 0);
204 /* Write new SIFADR value */
205 SIFWRITEB(chk1, SIFADR);
206 chk2 = SIFREADB(SIFADR);
207 if (chk2 != chk1)
208 return -1;
209
210 madgemc_setregpage(dev, 1);
211 /* Read, invert and write */
212 chk2 = SIFREADB(SIFADD);
213 if (chk2 != chk1)
214 return -1;
215
216 madgemc_setregpage(dev, 0);
217 chk2 ^= 0x0FE;
218 SIFWRITEB(chk2, SIFADR);
219
220 /* Read, invert and compare */
221 madgemc_setregpage(dev, 1);
222 chk2 = SIFREADB(SIFADD);
223 madgemc_setregpage(dev, 0);
224 chk2 ^= 0x0FE;
225
226 if(chk1 != chk2)
227 return (-1); /* No adapter */
228 chk1 -= 2;
229 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
230
231 madgemc_setregpage(dev, 0); /* sanity */
232 /* Restore the SIFADR value */
233 SIFWRITEB(old, SIFADR);
234
235 return (0);
236 }
237 #endif
238
239 /*
240 * Open/initialize the board. This is called sometime after
241 * booting when the 'ifconfig' program is run.
242 *
243 * This routine should set everything up anew at each open, even
244 * registers that "should" only need to be set once at boot, so that
245 * there is non-reboot way to recover if something goes wrong.
246 */
247 int tms380tr_open(struct net_device *dev)
248 {
249 struct net_local *tp = netdev_priv(dev);
250 int err;
251
252 /* init the spinlock */
253 spin_lock_init(&tp->lock);
254 init_timer(&tp->timer);
255
256 /* Reset the hardware here. Don't forget to set the station address. */
257
258 #ifdef CONFIG_ISA
259 if(dev->dma > 0)
260 {
261 unsigned long flags=claim_dma_lock();
262 disable_dma(dev->dma);
263 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
264 enable_dma(dev->dma);
265 release_dma_lock(flags);
266 }
267 #endif
268
269 err = tms380tr_chipset_init(dev);
270 if(err)
271 {
272 printk(KERN_INFO "%s: Chipset initialization error\n",
273 dev->name);
274 return (-1);
275 }
276
277 tp->timer.expires = jiffies + 30*HZ;
278 tp->timer.function = tms380tr_timer_end_wait;
279 tp->timer.data = (unsigned long)dev;
280 add_timer(&tp->timer);
281
282 printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
283 dev->name, tms380tr_read_ptr(dev));
284
285 tms380tr_enable_interrupts(dev);
286 tms380tr_open_adapter(dev);
287
288 netif_start_queue(dev);
289
290 /* Wait for interrupt from hardware. If interrupt does not come,
291 * there will be a timeout from the timer.
292 */
293 tp->Sleeping = 1;
294 interruptible_sleep_on(&tp->wait_for_tok_int);
295 del_timer(&tp->timer);
296
297 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
298 if(tp->AdapterVirtOpenFlag == 0)
299 {
300 tms380tr_disable_interrupts(dev);
301 return (-1);
302 }
303
304 tp->StartTime = jiffies;
305
306 /* Start function control timer */
307 tp->timer.expires = jiffies + 2*HZ;
308 tp->timer.function = tms380tr_timer_chk;
309 tp->timer.data = (unsigned long)dev;
310 add_timer(&tp->timer);
311
312 return (0);
313 }
314
315 /*
316 * Timeout function while waiting for event
317 */
318 static void tms380tr_timer_end_wait(unsigned long data)
319 {
320 struct net_device *dev = (struct net_device*)data;
321 struct net_local *tp = netdev_priv(dev);
322
323 if(tp->Sleeping)
324 {
325 tp->Sleeping = 0;
326 wake_up_interruptible(&tp->wait_for_tok_int);
327 }
328
329 return;
330 }
331
332 /*
333 * Initialize the chipset
334 */
335 static int tms380tr_chipset_init(struct net_device *dev)
336 {
337 struct net_local *tp = netdev_priv(dev);
338 int err;
339
340 tms380tr_init_ipb(tp);
341 tms380tr_init_opb(dev);
342 tms380tr_init_net_local(dev);
343
344 if(tms380tr_debug > 3)
345 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
346 err = tms380tr_reset_adapter(dev);
347 if(err < 0)
348 return (-1);
349
350 if(tms380tr_debug > 3)
351 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
352 err = tms380tr_bringup_diags(dev);
353 if(err < 0)
354 return (-1);
355
356 if(tms380tr_debug > 3)
357 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
358 err = tms380tr_init_adapter(dev);
359 if(err < 0)
360 return (-1);
361
362 if(tms380tr_debug > 3)
363 printk(KERN_DEBUG "%s: Done!\n", dev->name);
364 return (0);
365 }
366
367 /*
368 * Initializes the net_local structure.
369 */
370 static void tms380tr_init_net_local(struct net_device *dev)
371 {
372 struct net_local *tp = netdev_priv(dev);
373 int i;
374 dma_addr_t dmabuf;
375
376 tp->scb.CMD = 0;
377 tp->scb.Parm[0] = 0;
378 tp->scb.Parm[1] = 0;
379
380 tp->ssb.STS = 0;
381 tp->ssb.Parm[0] = 0;
382 tp->ssb.Parm[1] = 0;
383 tp->ssb.Parm[2] = 0;
384
385 tp->CMDqueue = 0;
386
387 tp->AdapterOpenFlag = 0;
388 tp->AdapterVirtOpenFlag = 0;
389 tp->ScbInUse = 0;
390 tp->OpenCommandIssued = 0;
391 tp->ReOpenInProgress = 0;
392 tp->HaltInProgress = 0;
393 tp->TransmitHaltScheduled = 0;
394 tp->LobeWireFaultLogged = 0;
395 tp->LastOpenStatus = 0;
396 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
397
398 /* Create circular chain of transmit lists */
399 for (i = 0; i < TPL_NUM; i++)
400 {
401 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
402 tp->Tpl[i].Status = 0;
403 tp->Tpl[i].FrameSize = 0;
404 tp->Tpl[i].FragList[0].DataCount = 0;
405 tp->Tpl[i].FragList[0].DataAddr = 0;
406 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
407 tp->Tpl[i].MData = NULL;
408 tp->Tpl[i].TPLIndex = i;
409 tp->Tpl[i].DMABuff = 0;
410 tp->Tpl[i].BusyFlag = 0;
411 }
412
413 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
414
415 /* Create circular chain of receive lists */
416 for (i = 0; i < RPL_NUM; i++)
417 {
418 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
419 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
420 tp->Rpl[i].FrameSize = 0;
421 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
422
423 /* Alloc skb and point adapter to data area */
424 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
425 tp->Rpl[i].DMABuff = 0;
426
427 /* skb == NULL ? then use local buffer */
428 if(tp->Rpl[i].Skb == NULL)
429 {
430 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
431 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
432 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
433 }
434 else /* SKB != NULL */
435 {
436 tp->Rpl[i].Skb->dev = dev;
437 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
438
439 /* data unreachable for DMA ? then use local buffer */
440 dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
441 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
442 {
443 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
444 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
445 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
446 }
447 else /* DMA directly in skb->data */
448 {
449 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
450 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
451 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
452 tp->Rpl[i].DMABuff = dmabuf;
453 }
454 }
455
456 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
457 tp->Rpl[i].RPLIndex = i;
458 }
459
460 tp->RplHead = &tp->Rpl[0];
461 tp->RplTail = &tp->Rpl[RPL_NUM-1];
462 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
463
464 return;
465 }
466
467 /*
468 * Initializes the initialisation parameter block.
469 */
470 static void tms380tr_init_ipb(struct net_local *tp)
471 {
472 tp->ipb.Init_Options = BURST_MODE;
473 tp->ipb.CMD_Status_IV = 0;
474 tp->ipb.TX_IV = 0;
475 tp->ipb.RX_IV = 0;
476 tp->ipb.Ring_Status_IV = 0;
477 tp->ipb.SCB_Clear_IV = 0;
478 tp->ipb.Adapter_CHK_IV = 0;
479 tp->ipb.RX_Burst_Size = BURST_SIZE;
480 tp->ipb.TX_Burst_Size = BURST_SIZE;
481 tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
482 tp->ipb.SCB_Addr = 0;
483 tp->ipb.SSB_Addr = 0;
484
485 return;
486 }
487
488 /*
489 * Initializes the open parameter block.
490 */
491 static void tms380tr_init_opb(struct net_device *dev)
492 {
493 struct net_local *tp;
494 unsigned long Addr;
495 unsigned short RplSize = RPL_SIZE;
496 unsigned short TplSize = TPL_SIZE;
497 unsigned short BufferSize = BUFFER_SIZE;
498 int i;
499
500 tp = netdev_priv(dev);
501
502 tp->ocpl.OPENOptions = 0;
503 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
504 tp->ocpl.FullDuplex = 0;
505 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
506
507 /*
508 * Set node address
509 *
510 * We go ahead and put it in the OPB even though on
511 * most of the generic adapters this isn't required.
512 * Its simpler this way. -- ASF
513 */
514 for (i=0;i<6;i++)
515 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
516
517 tp->ocpl.GroupAddr = 0;
518 tp->ocpl.FunctAddr = 0;
519 tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
520 tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
521 tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
522 tp->ocpl.Reserved = 0;
523 tp->ocpl.TXBufMin = TX_BUF_MIN;
524 tp->ocpl.TXBufMax = TX_BUF_MAX;
525
526 Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
527
528 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
529 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
530
531 return;
532 }
533
534 /*
535 * Send OPEN command to adapter
536 */
537 static void tms380tr_open_adapter(struct net_device *dev)
538 {
539 struct net_local *tp = netdev_priv(dev);
540
541 if(tp->OpenCommandIssued)
542 return;
543
544 tp->OpenCommandIssued = 1;
545 tms380tr_exec_cmd(dev, OC_OPEN);
546
547 return;
548 }
549
550 /*
551 * Clear the adapter's interrupt flag. Clear system interrupt enable
552 * (SINTEN): disable adapter to system interrupts.
553 */
554 static void tms380tr_disable_interrupts(struct net_device *dev)
555 {
556 SIFWRITEB(0, SIFACL);
557
558 return;
559 }
560
561 /*
562 * Set the adapter's interrupt flag. Set system interrupt enable
563 * (SINTEN): enable adapter to system interrupts.
564 */
565 static void tms380tr_enable_interrupts(struct net_device *dev)
566 {
567 SIFWRITEB(ACL_SINTEN, SIFACL);
568
569 return;
570 }
571
572 /*
573 * Put command in command queue, try to execute it.
574 */
575 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
576 {
577 struct net_local *tp = netdev_priv(dev);
578
579 tp->CMDqueue |= Command;
580 tms380tr_chk_outstanding_cmds(dev);
581
582 return;
583 }
584
585 static void tms380tr_timeout(struct net_device *dev)
586 {
587 /*
588 * If we get here, some higher level has decided we are broken.
589 * There should really be a "kick me" function call instead.
590 *
591 * Resetting the token ring adapter takes a long time so just
592 * fake transmission time and go on trying. Our own timeout
593 * routine is in tms380tr_timer_chk()
594 */
595 dev->trans_start = jiffies; /* prevent tx timeout */
596 netif_wake_queue(dev);
597 }
598
599 /*
600 * Gets skb from system, queues it and checks if it can be sent
601 */
602 static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
603 struct net_device *dev)
604 {
605 struct net_local *tp = netdev_priv(dev);
606 netdev_tx_t rc;
607
608 rc = tms380tr_hardware_send_packet(skb, dev);
609 if(tp->TplFree->NextTPLPtr->BusyFlag)
610 netif_stop_queue(dev);
611 return rc;
612 }
613
614 /*
615 * Move frames into adapter tx queue
616 */
617 static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
618 struct net_device *dev)
619 {
620 TPL *tpl;
621 short length;
622 unsigned char *buf;
623 unsigned long flags;
624 int i;
625 dma_addr_t dmabuf, newbuf;
626 struct net_local *tp = netdev_priv(dev);
627
628 /* Try to get a free TPL from the chain.
629 *
630 * NOTE: We *must* always leave one unused TPL in the chain,
631 * because otherwise the adapter might send frames twice.
632 */
633 spin_lock_irqsave(&tp->lock, flags);
634 if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
635 if (tms380tr_debug > 0)
636 printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
637 spin_unlock_irqrestore(&tp->lock, flags);
638 return NETDEV_TX_BUSY;
639 }
640
641 dmabuf = 0;
642
643 /* Is buffer reachable for Busmaster-DMA? */
644
645 length = skb->len;
646 dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE);
647 if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
648 /* Copy frame to local buffer */
649 dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE);
650 dmabuf = 0;
651 i = tp->TplFree->TPLIndex;
652 buf = tp->LocalTxBuffers[i];
653 skb_copy_from_linear_data(skb, buf, length);
654 newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
655 }
656 else {
657 /* Send direct from skb->data */
658 newbuf = dmabuf;
659 buf = skb->data;
660 }
661 /* Source address in packet? */
662 tms380tr_chk_src_addr(buf, dev->dev_addr);
663 tp->LastSendTime = jiffies;
664 tpl = tp->TplFree; /* Get the "free" TPL */
665 tpl->BusyFlag = 1; /* Mark TPL as busy */
666 tp->TplFree = tpl->NextTPLPtr;
667
668 /* Save the skb for delayed return of skb to system */
669 tpl->Skb = skb;
670 tpl->DMABuff = dmabuf;
671 tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
672 tpl->FragList[0].DataAddr = htonl(newbuf);
673
674 /* Write the data length in the transmit list. */
675 tpl->FrameSize = cpu_to_be16((unsigned short)length);
676 tpl->MData = buf;
677
678 /* Transmit the frame and set the status values. */
679 tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
680 | TX_END_FRAME | TX_PASS_SRC_ADDR
681 | TX_FRAME_IRQ);
682
683 /* Let adapter send the frame. */
684 tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
685 spin_unlock_irqrestore(&tp->lock, flags);
686
687 return NETDEV_TX_OK;
688 }
689
690 /*
691 * Write the given value to the 'Status' field of the specified TPL.
692 * NOTE: This function should be used whenever the status of any TPL must be
693 * modified by the driver, because the compiler may otherwise change the
694 * order of instructions such that writing the TPL status may be executed at
695 * an undesirable time. When this function is used, the status is always
696 * written when the function is called.
697 */
698 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
699 {
700 tpl->Status = Status;
701 }
702
703 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
704 {
705 unsigned char SRBit;
706
707 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
708 return;
709 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
710 return;
711
712 SRBit = frame[8] & 0x80;
713 memcpy(&frame[8], hw_addr, 6);
714 frame[8] |= SRBit;
715
716 return;
717 }
718
719 /*
720 * The timer routine: Check if adapter still open and working, reopen if not.
721 */
722 static void tms380tr_timer_chk(unsigned long data)
723 {
724 struct net_device *dev = (struct net_device*)data;
725 struct net_local *tp = netdev_priv(dev);
726
727 if(tp->HaltInProgress)
728 return;
729
730 tms380tr_chk_outstanding_cmds(dev);
731 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies) &&
732 (tp->TplFree != tp->TplBusy))
733 {
734 /* Anything to send, but stalled too long */
735 tp->LastSendTime = jiffies;
736 tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
737 }
738
739 tp->timer.expires = jiffies + 2*HZ;
740 add_timer(&tp->timer);
741
742 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
743 return;
744 tp->ReOpenInProgress = 1;
745 tms380tr_open_adapter(dev);
746
747 return;
748 }
749
750 /*
751 * The typical workload of the driver: Handle the network interface interrupts.
752 */
753 irqreturn_t tms380tr_interrupt(int irq, void *dev_id)
754 {
755 struct net_device *dev = dev_id;
756 struct net_local *tp;
757 unsigned short irq_type;
758 int handled = 0;
759
760 tp = netdev_priv(dev);
761
762 irq_type = SIFREADW(SIFSTS);
763
764 while(irq_type & STS_SYSTEM_IRQ) {
765 handled = 1;
766 irq_type &= STS_IRQ_MASK;
767
768 if(!tms380tr_chk_ssb(tp, irq_type)) {
769 printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
770 break;
771 }
772
773 switch(irq_type) {
774 case STS_IRQ_RECEIVE_STATUS:
775 tms380tr_reset_interrupt(dev);
776 tms380tr_rcv_status_irq(dev);
777 break;
778
779 case STS_IRQ_TRANSMIT_STATUS:
780 /* Check if TRANSMIT.HALT command is complete */
781 if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
782 tp->TransmitCommandActive = 0;
783 tp->TransmitHaltScheduled = 0;
784
785 /* Issue a new transmit command. */
786 tms380tr_exec_cmd(dev, OC_TRANSMIT);
787 }
788
789 tms380tr_reset_interrupt(dev);
790 tms380tr_tx_status_irq(dev);
791 break;
792
793 case STS_IRQ_COMMAND_STATUS:
794 /* The SSB contains status of last command
795 * other than receive/transmit.
796 */
797 tms380tr_cmd_status_irq(dev);
798 break;
799
800 case STS_IRQ_SCB_CLEAR:
801 /* The SCB is free for another command. */
802 tp->ScbInUse = 0;
803 tms380tr_chk_outstanding_cmds(dev);
804 break;
805
806 case STS_IRQ_RING_STATUS:
807 tms380tr_ring_status_irq(dev);
808 break;
809
810 case STS_IRQ_ADAPTER_CHECK:
811 tms380tr_chk_irq(dev);
812 break;
813
814 case STS_IRQ_LLC_STATUS:
815 printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
816 break;
817
818 case STS_IRQ_TIMER:
819 printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
820 break;
821
822 case STS_IRQ_RECEIVE_PENDING:
823 printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
824 break;
825
826 default:
827 printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
828 break;
829 }
830
831 /* Reset system interrupt if not already done. */
832 if(irq_type != STS_IRQ_TRANSMIT_STATUS &&
833 irq_type != STS_IRQ_RECEIVE_STATUS) {
834 tms380tr_reset_interrupt(dev);
835 }
836
837 irq_type = SIFREADW(SIFSTS);
838 }
839
840 return IRQ_RETVAL(handled);
841 }
842
843 /*
844 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
845 */
846 static void tms380tr_reset_interrupt(struct net_device *dev)
847 {
848 struct net_local *tp = netdev_priv(dev);
849 SSB *ssb = &tp->ssb;
850
851 /*
852 * [Workaround for "Data Late"]
853 * Set all fields of the SSB to well-defined values so we can
854 * check if the adapter has written the SSB.
855 */
856
857 ssb->STS = (unsigned short) -1;
858 ssb->Parm[0] = (unsigned short) -1;
859 ssb->Parm[1] = (unsigned short) -1;
860 ssb->Parm[2] = (unsigned short) -1;
861
862 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
863 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
864 */
865 tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
866
867 return;
868 }
869
870 /*
871 * Check if the SSB has actually been written by the adapter.
872 */
873 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
874 {
875 SSB *ssb = &tp->ssb; /* The address of the SSB. */
876
877 /* C 0 1 2 INTERRUPT CODE
878 * - - - - --------------
879 * 1 1 1 1 TRANSMIT STATUS
880 * 1 1 1 1 RECEIVE STATUS
881 * 1 ? ? 0 COMMAND STATUS
882 * 0 0 0 0 SCB CLEAR
883 * 1 1 0 0 RING STATUS
884 * 0 0 0 0 ADAPTER CHECK
885 *
886 * 0 = SSB field not affected by interrupt
887 * 1 = SSB field is affected by interrupt
888 *
889 * C = SSB ADDRESS +0: COMMAND
890 * 0 = SSB ADDRESS +2: STATUS 0
891 * 1 = SSB ADDRESS +4: STATUS 1
892 * 2 = SSB ADDRESS +6: STATUS 2
893 */
894
895 /* Check if this interrupt does use the SSB. */
896
897 if(IrqType != STS_IRQ_TRANSMIT_STATUS &&
898 IrqType != STS_IRQ_RECEIVE_STATUS &&
899 IrqType != STS_IRQ_COMMAND_STATUS &&
900 IrqType != STS_IRQ_RING_STATUS)
901 {
902 return (1); /* SSB not involved. */
903 }
904
905 /* Note: All fields of the SSB have been set to all ones (-1) after it
906 * has last been used by the software (see DriverIsr()).
907 *
908 * Check if the affected SSB fields are still unchanged.
909 */
910
911 if(ssb->STS == (unsigned short) -1)
912 return (0); /* Command field not yet available. */
913 if(IrqType == STS_IRQ_COMMAND_STATUS)
914 return (1); /* Status fields not always affected. */
915 if(ssb->Parm[0] == (unsigned short) -1)
916 return (0); /* Status 1 field not yet available. */
917 if(IrqType == STS_IRQ_RING_STATUS)
918 return (1); /* Status 2 & 3 fields not affected. */
919
920 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
921 if(ssb->Parm[1] == (unsigned short) -1)
922 return (0); /* Status 2 field not yet available. */
923 if(ssb->Parm[2] == (unsigned short) -1)
924 return (0); /* Status 3 field not yet available. */
925
926 return (1); /* All SSB fields have been written by the adapter. */
927 }
928
929 /*
930 * Evaluates the command results status in the SSB status field.
931 */
932 static void tms380tr_cmd_status_irq(struct net_device *dev)
933 {
934 struct net_local *tp = netdev_priv(dev);
935 unsigned short ssb_cmd, ssb_parm_0;
936 unsigned short ssb_parm_1;
937 char *open_err = "Open error -";
938 char *code_err = "Open code -";
939
940 /* Copy the ssb values to local variables */
941 ssb_cmd = tp->ssb.STS;
942 ssb_parm_0 = tp->ssb.Parm[0];
943 ssb_parm_1 = tp->ssb.Parm[1];
944
945 if(ssb_cmd == OPEN)
946 {
947 tp->Sleeping = 0;
948 if(!tp->ReOpenInProgress)
949 wake_up_interruptible(&tp->wait_for_tok_int);
950
951 tp->OpenCommandIssued = 0;
952 tp->ScbInUse = 0;
953
954 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
955 {
956 /* Success, the adapter is open. */
957 tp->LobeWireFaultLogged = 0;
958 tp->AdapterOpenFlag = 1;
959 tp->AdapterVirtOpenFlag = 1;
960 tp->TransmitCommandActive = 0;
961 tms380tr_exec_cmd(dev, OC_TRANSMIT);
962 tms380tr_exec_cmd(dev, OC_RECEIVE);
963
964 if(tp->ReOpenInProgress)
965 tp->ReOpenInProgress = 0;
966
967 return;
968 }
969 else /* The adapter did not open. */
970 {
971 if(ssb_parm_0 & NODE_ADDR_ERROR)
972 printk(KERN_INFO "%s: Node address error\n",
973 dev->name);
974 if(ssb_parm_0 & LIST_SIZE_ERROR)
975 printk(KERN_INFO "%s: List size error\n",
976 dev->name);
977 if(ssb_parm_0 & BUF_SIZE_ERROR)
978 printk(KERN_INFO "%s: Buffer size error\n",
979 dev->name);
980 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
981 printk(KERN_INFO "%s: Tx buffer count error\n",
982 dev->name);
983 if(ssb_parm_0 & INVALID_OPEN_OPTION)
984 printk(KERN_INFO "%s: Invalid open option\n",
985 dev->name);
986 if(ssb_parm_0 & OPEN_ERROR)
987 {
988 /* Show the open phase. */
989 switch(ssb_parm_0 & OPEN_PHASES_MASK)
990 {
991 case LOBE_MEDIA_TEST:
992 if(!tp->LobeWireFaultLogged)
993 {
994 tp->LobeWireFaultLogged = 1;
995 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
996 }
997 tp->ReOpenInProgress = 1;
998 tp->AdapterOpenFlag = 0;
999 tp->AdapterVirtOpenFlag = 1;
1000 tms380tr_open_adapter(dev);
1001 return;
1002
1003 case PHYSICAL_INSERTION:
1004 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
1005 break;
1006
1007 case ADDRESS_VERIFICATION:
1008 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1009 break;
1010
1011 case PARTICIPATION_IN_RING_POLL:
1012 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1013 break;
1014
1015 case REQUEST_INITIALISATION:
1016 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1017 break;
1018
1019 case FULLDUPLEX_CHECK:
1020 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1021 break;
1022
1023 default:
1024 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1025 break;
1026 }
1027
1028 /* Show the open errors. */
1029 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1030 {
1031 case OPEN_FUNCTION_FAILURE:
1032 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1033 tp->LastOpenStatus =
1034 OPEN_FUNCTION_FAILURE;
1035 break;
1036
1037 case OPEN_SIGNAL_LOSS:
1038 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1039 tp->LastOpenStatus =
1040 OPEN_SIGNAL_LOSS;
1041 break;
1042
1043 case OPEN_TIMEOUT:
1044 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1045 tp->LastOpenStatus =
1046 OPEN_TIMEOUT;
1047 break;
1048
1049 case OPEN_RING_FAILURE:
1050 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1051 tp->LastOpenStatus =
1052 OPEN_RING_FAILURE;
1053 break;
1054
1055 case OPEN_RING_BEACONING:
1056 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1057 tp->LastOpenStatus =
1058 OPEN_RING_BEACONING;
1059 break;
1060
1061 case OPEN_DUPLICATE_NODEADDR:
1062 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1063 tp->LastOpenStatus =
1064 OPEN_DUPLICATE_NODEADDR;
1065 break;
1066
1067 case OPEN_REQUEST_INIT:
1068 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1069 tp->LastOpenStatus =
1070 OPEN_REQUEST_INIT;
1071 break;
1072
1073 case OPEN_REMOVE_RECEIVED:
1074 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1075 tp->LastOpenStatus =
1076 OPEN_REMOVE_RECEIVED;
1077 break;
1078
1079 case OPEN_FULLDUPLEX_SET:
1080 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1081 tp->LastOpenStatus =
1082 OPEN_FULLDUPLEX_SET;
1083 break;
1084
1085 default:
1086 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1087 tp->LastOpenStatus =
1088 OPEN_FUNCTION_FAILURE;
1089 break;
1090 }
1091 }
1092
1093 tp->AdapterOpenFlag = 0;
1094 tp->AdapterVirtOpenFlag = 0;
1095
1096 return;
1097 }
1098 }
1099 else
1100 {
1101 if(ssb_cmd != READ_ERROR_LOG)
1102 return;
1103
1104 /* Add values from the error log table to the MAC
1105 * statistics counters and update the errorlogtable
1106 * memory.
1107 */
1108 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1109 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1110 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1111 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1112 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1113 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1114 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1115 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1116 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1117 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1118 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1119 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1120 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1121 }
1122
1123 return;
1124 }
1125
1126 /*
1127 * The inverse routine to tms380tr_open().
1128 */
1129 int tms380tr_close(struct net_device *dev)
1130 {
1131 struct net_local *tp = netdev_priv(dev);
1132 netif_stop_queue(dev);
1133
1134 del_timer(&tp->timer);
1135
1136 /* Flush the Tx and disable Rx here. */
1137
1138 tp->HaltInProgress = 1;
1139 tms380tr_exec_cmd(dev, OC_CLOSE);
1140 tp->timer.expires = jiffies + 1*HZ;
1141 tp->timer.function = tms380tr_timer_end_wait;
1142 tp->timer.data = (unsigned long)dev;
1143 add_timer(&tp->timer);
1144
1145 tms380tr_enable_interrupts(dev);
1146
1147 tp->Sleeping = 1;
1148 interruptible_sleep_on(&tp->wait_for_tok_int);
1149 tp->TransmitCommandActive = 0;
1150
1151 del_timer(&tp->timer);
1152 tms380tr_disable_interrupts(dev);
1153
1154 #ifdef CONFIG_ISA
1155 if(dev->dma > 0)
1156 {
1157 unsigned long flags=claim_dma_lock();
1158 disable_dma(dev->dma);
1159 release_dma_lock(flags);
1160 }
1161 #endif
1162
1163 SIFWRITEW(0xFF00, SIFCMD);
1164 #if 0
1165 if(dev->dma > 0) /* what the? */
1166 SIFWRITEB(0xff, POSREG);
1167 #endif
1168 tms380tr_cancel_tx_queue(tp);
1169
1170 return (0);
1171 }
1172
1173 /*
1174 * Get the current statistics. This may be called with the card open
1175 * or closed.
1176 */
1177 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1178 {
1179 struct net_local *tp = netdev_priv(dev);
1180
1181 return ((struct net_device_stats *)&tp->MacStat);
1182 }
1183
1184 /*
1185 * Set or clear the multicast filter for this adapter.
1186 */
1187 static void tms380tr_set_multicast_list(struct net_device *dev)
1188 {
1189 struct net_local *tp = netdev_priv(dev);
1190 unsigned int OpenOptions;
1191
1192 OpenOptions = tp->ocpl.OPENOptions &
1193 ~(PASS_ADAPTER_MAC_FRAMES
1194 | PASS_ATTENTION_FRAMES
1195 | PASS_BEACON_MAC_FRAMES
1196 | COPY_ALL_MAC_FRAMES
1197 | COPY_ALL_NON_MAC_FRAMES);
1198
1199 tp->ocpl.FunctAddr = 0;
1200
1201 if(dev->flags & IFF_PROMISC)
1202 /* Enable promiscuous mode */
1203 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1204 COPY_ALL_MAC_FRAMES;
1205 else
1206 {
1207 if(dev->flags & IFF_ALLMULTI)
1208 {
1209 /* Disable promiscuous mode, use normal mode. */
1210 tp->ocpl.FunctAddr = 0xFFFFFFFF;
1211 }
1212 else
1213 {
1214 struct netdev_hw_addr *ha;
1215
1216 netdev_for_each_mc_addr(ha, dev) {
1217 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1218 ha->addr[2];
1219 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1220 ha->addr[3];
1221 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1222 ha->addr[4];
1223 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1224 ha->addr[5];
1225 }
1226 }
1227 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1228 }
1229
1230 tp->ocpl.OPENOptions = OpenOptions;
1231 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1232 return;
1233 }
1234
1235 /*
1236 * Wait for some time (microseconds)
1237 */
1238 void tms380tr_wait(unsigned long time)
1239 {
1240 #if 0
1241 long tmp;
1242
1243 tmp = jiffies + time/(1000000/HZ);
1244 do {
1245 tmp = schedule_timeout_interruptible(tmp);
1246 } while(time_after(tmp, jiffies));
1247 #else
1248 udelay(time);
1249 #endif
1250 return;
1251 }
1252
1253 /*
1254 * Write a command value to the SIFCMD register
1255 */
1256 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1257 {
1258 unsigned short cmd;
1259 unsigned short SifStsValue;
1260 unsigned long loop_counter;
1261
1262 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1263 cmd = (unsigned short)WriteValue;
1264 loop_counter = 0,5 * 800000;
1265 do {
1266 SifStsValue = SIFREADW(SIFSTS);
1267 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1268 SIFWRITEW(cmd, SIFCMD);
1269
1270 return;
1271 }
1272
1273 /*
1274 * Processes adapter hardware reset, halts adapter and downloads firmware,
1275 * clears the halt bit.
1276 */
1277 static int tms380tr_reset_adapter(struct net_device *dev)
1278 {
1279 struct net_local *tp = netdev_priv(dev);
1280 unsigned short *fw_ptr;
1281 unsigned short count, c, count2;
1282 const struct firmware *fw_entry = NULL;
1283
1284 if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1285 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1286 dev->name, "tms380tr.bin");
1287 return (-1);
1288 }
1289
1290 fw_ptr = (unsigned short *)fw_entry->data;
1291 count2 = fw_entry->size / 2;
1292
1293 /* Hardware adapter reset */
1294 SIFWRITEW(ACL_ARESET, SIFACL);
1295 tms380tr_wait(40);
1296
1297 c = SIFREADW(SIFACL);
1298 tms380tr_wait(20);
1299
1300 if(dev->dma == 0) /* For PCI adapters */
1301 {
1302 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1303 if(tp->setnselout)
1304 c |= (*tp->setnselout)(dev);
1305 }
1306
1307 /* In case a command is pending - forget it */
1308 tp->ScbInUse = 0;
1309
1310 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1311 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1312 c |= ACL_BOOT;
1313 c |= ACL_SINTEN;
1314 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1315 SIFWRITEW(c, SIFACL);
1316 tms380tr_wait(40);
1317
1318 count = 0;
1319 /* Download firmware via DIO interface: */
1320 do {
1321 if (count2 < 3) continue;
1322
1323 /* Download first address part */
1324 SIFWRITEW(*fw_ptr, SIFADX);
1325 fw_ptr++;
1326 count2--;
1327 /* Download second address part */
1328 SIFWRITEW(*fw_ptr, SIFADD);
1329 fw_ptr++;
1330 count2--;
1331
1332 if((count = *fw_ptr) != 0) /* Load loop counter */
1333 {
1334 fw_ptr++; /* Download block data */
1335 count2--;
1336 if (count > count2) continue;
1337
1338 for(; count > 0; count--)
1339 {
1340 SIFWRITEW(*fw_ptr, SIFINC);
1341 fw_ptr++;
1342 count2--;
1343 }
1344 }
1345 else /* Stop, if last block downloaded */
1346 {
1347 c = SIFREADW(SIFACL);
1348 c &= (~ACL_CPHALT | ACL_SINTEN);
1349
1350 /* Clear CPHALT and start BUD */
1351 SIFWRITEW(c, SIFACL);
1352 if (fw_entry)
1353 release_firmware(fw_entry);
1354 return (1);
1355 }
1356 } while(count == 0);
1357
1358 if (fw_entry)
1359 release_firmware(fw_entry);
1360 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1361 return (-1);
1362 }
1363
1364 MODULE_FIRMWARE("tms380tr.bin");
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(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(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_put(skb, tp->MaxPacketSize);
2178 rpl->SkbStat = SKB_DATA_COPY;
2179 ReceiveDataPtr = rpl->MData;
2180 }
2181 }
2182
2183 if(skb && (rpl->SkbStat == SKB_DATA_COPY ||
2184 rpl->SkbStat == SKB_DMA_DIRECT))
2185 {
2186 if(rpl->SkbStat == SKB_DATA_COPY)
2187 skb_copy_to_linear_data(skb, ReceiveDataPtr,
2188 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 }
2196 }
2197 else /* Invalid frame */
2198 {
2199 if(rpl->Skb != NULL)
2200 dev_kfree_skb_irq(rpl->Skb);
2201
2202 /* Skip list. */
2203 if(rpl->Status & RX_START_FRAME)
2204 /* Frame start bit is set -> overflow. */
2205 tp->MacStat.rx_errors++;
2206 }
2207 if (rpl->DMABuff)
2208 dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE);
2209 rpl->DMABuff = 0;
2210
2211 /* Allocate new skb for rpl */
2212 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2213 /* skb == NULL ? then use local buffer */
2214 if(rpl->Skb == NULL)
2215 {
2216 rpl->SkbStat = SKB_UNAVAILABLE;
2217 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2218 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2219 }
2220 else /* skb != NULL */
2221 {
2222 rpl->Skb->dev = dev;
2223 skb_put(rpl->Skb, tp->MaxPacketSize);
2224
2225 /* Data unreachable for DMA ? then use local buffer */
2226 dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
2227 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2228 {
2229 rpl->SkbStat = SKB_DATA_COPY;
2230 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2231 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2232 }
2233 else
2234 {
2235 /* DMA directly in skb->data */
2236 rpl->SkbStat = SKB_DMA_DIRECT;
2237 rpl->FragList[0].DataAddr = htonl(dmabuf);
2238 rpl->MData = rpl->Skb->data;
2239 rpl->DMABuff = dmabuf;
2240 }
2241 }
2242
2243 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2244 rpl->FrameSize = 0;
2245
2246 /* Pass the last RPL back to the adapter */
2247 tp->RplTail->FrameSize = 0;
2248
2249 /* Reset the CSTAT field in the list. */
2250 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2251
2252 /* Current RPL becomes last one in list. */
2253 tp->RplTail = tp->RplTail->NextRPLPtr;
2254
2255 /* Inform adapter about RPL valid. */
2256 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2257 }
2258
2259 return;
2260 }
2261
2262 /*
2263 * This function should be used whenever the status of any RPL must be
2264 * modified by the driver, because the compiler may otherwise change the
2265 * order of instructions such that writing the RPL status may be executed
2266 * at an undesirable time. When this function is used, the status is
2267 * always written when the function is called.
2268 */
2269 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2270 {
2271 rpl->Status = Status;
2272
2273 return;
2274 }
2275
2276 /*
2277 * The function updates the statistic counters in mac->MacStat.
2278 * It differtiates between directed and broadcast/multicast ( ==functional)
2279 * frames.
2280 */
2281 static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2282 unsigned int Length)
2283 {
2284 tp->MacStat.rx_packets++;
2285 tp->MacStat.rx_bytes += Length;
2286
2287 /* Test functional bit */
2288 if(DataPtr[2] & GROUP_BIT)
2289 tp->MacStat.multicast++;
2290
2291 return;
2292 }
2293
2294 static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2295 {
2296 struct net_local *tp = netdev_priv(dev);
2297 struct sockaddr *saddr = addr;
2298
2299 if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2300 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2301 return -EIO;
2302 }
2303 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2304 return 0;
2305 }
2306
2307 #if TMS380TR_DEBUG > 0
2308 /*
2309 * Dump Packet (data)
2310 */
2311 static void tms380tr_dump(unsigned char *Data, int length)
2312 {
2313 int i, j;
2314
2315 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2316 {
2317 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2318 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2319 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2320 }
2321
2322 return;
2323 }
2324 #endif
2325
2326 void tmsdev_term(struct net_device *dev)
2327 {
2328 struct net_local *tp;
2329
2330 tp = netdev_priv(dev);
2331 dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2332 DMA_BIDIRECTIONAL);
2333 }
2334
2335 const struct net_device_ops tms380tr_netdev_ops = {
2336 .ndo_open = tms380tr_open,
2337 .ndo_stop = tms380tr_close,
2338 .ndo_start_xmit = tms380tr_send_packet,
2339 .ndo_tx_timeout = tms380tr_timeout,
2340 .ndo_get_stats = tms380tr_get_stats,
2341 .ndo_set_multicast_list = tms380tr_set_multicast_list,
2342 .ndo_set_mac_address = tms380tr_set_mac_address,
2343 };
2344 EXPORT_SYMBOL(tms380tr_netdev_ops);
2345
2346 int tmsdev_init(struct net_device *dev, struct device *pdev)
2347 {
2348 struct net_local *tms_local;
2349
2350 memset(netdev_priv(dev), 0, sizeof(struct net_local));
2351 tms_local = netdev_priv(dev);
2352 init_waitqueue_head(&tms_local->wait_for_tok_int);
2353 if (pdev->dma_mask)
2354 tms_local->dmalimit = *pdev->dma_mask;
2355 else
2356 return -ENOMEM;
2357 tms_local->pdev = pdev;
2358 tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2359 sizeof(struct net_local), DMA_BIDIRECTIONAL);
2360 if (tms_local->dmabuffer + sizeof(struct net_local) >
2361 tms_local->dmalimit)
2362 {
2363 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2364 dev->name);
2365 tmsdev_term(dev);
2366 return -ENOMEM;
2367 }
2368
2369 dev->netdev_ops = &tms380tr_netdev_ops;
2370 dev->watchdog_timeo = HZ;
2371
2372 return 0;
2373 }
2374
2375 EXPORT_SYMBOL(tms380tr_open);
2376 EXPORT_SYMBOL(tms380tr_close);
2377 EXPORT_SYMBOL(tms380tr_interrupt);
2378 EXPORT_SYMBOL(tmsdev_init);
2379 EXPORT_SYMBOL(tmsdev_term);
2380 EXPORT_SYMBOL(tms380tr_wait);
2381
2382 #ifdef MODULE
2383
2384 static struct module *TMS380_module = NULL;
2385
2386 int init_module(void)
2387 {
2388 printk(KERN_DEBUG "%s", version);
2389
2390 TMS380_module = &__this_module;
2391 return 0;
2392 }
2393
2394 void cleanup_module(void)
2395 {
2396 TMS380_module = NULL;
2397 }
2398 #endif
2399
2400 MODULE_LICENSE("GPL");
2401
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