projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / tokenring / tms380tr.c
1 /*
2 * tms380tr.c: A network driver library for Texas Instruments TMS380-based
3 * Token Ring Adapters.
4 *
5 * Originally sktr.c: Written 1997 by Christoph Goos
6 *
7 * A fine result of the Linux Systems Network Architecture Project.
8 * http://www.linux-sna.org
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * The following modules are currently available for card support:
14 * - tmspci (Generic PCI card support)
15 * - abyss (Madge PCI support)
16 * - tmsisa (SysKonnect TR4/16 ISA)
17 *
18 * Sources:
19 * - The hardware related parts of this driver are take from
20 * the SysKonnect Token Ring driver for Windows NT.
21 * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
22 * driver, as well as the 'skeleton.c' driver by Donald Becker.
23 * - Also various other drivers in the linux source tree were taken
24 * as samples for some tasks.
25 * - TI TMS380 Second-Generation Token Ring User's Guide
26 * - TI datasheets for respective chips
27 * - David Hein at Texas Instruments
28 * - Various Madge employees
29 *
30 * Maintainer(s):
31 * JS Jay Schulist jschlst@samba.org
32 * CG Christoph Goos cgoos@syskonnect.de
33 * AF Adam Fritzler mid@auk.cx
34 * MLP Mike Phillips phillim@amtrak.com
35 * JF Jochen Friedrich jochen@scram.de
36 *
37 * Modification History:
38 * 29-Aug-97 CG Created
39 * 04-Apr-98 CG Fixed problems caused by tok_timer_check
40 * 10-Apr-98 CG Fixed lockups at cable disconnection
41 * 27-May-98 JS Formated to Linux Kernel Format
42 * 31-May-98 JS Hacked in PCI support
43 * 16-Jun-98 JS Modulized for multiple cards with one driver
44 * Sep-99 AF Renamed to tms380tr (supports more than SK's)
45 * 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support
46 * Fixed a bug causing double copies on PCI
47 * Fixed for new multicast stuff (2.2/2.3)
48 * 25-Sep-99 AF Uped TPL_NUM from 3 to 9
49 * Removed extraneous 'No free TPL'
50 * 22-Dec-99 AF Added Madge PCI Mk2 support and generalized
51 * parts of the initilization procedure.
52 * 30-Dec-99 AF Turned tms380tr into a library ala 8390.
53 * Madge support is provided in the abyss module
54 * Generic PCI support is in the tmspci module.
55 * 30-Nov-00 JF Updated PCI code to support IO MMU via
56 * pci_map_static(). Alpha uses this MMU for ISA
57 * as well.
58 * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some
59 * cleanup.
60 * 13-Jan-02 JF Add spinlock to fix race condition.
61 * 09-Nov-02 JF Fixed printks to not SPAM the console during
62 * normal operation.
63 * 30-Dec-02 JF Removed incorrect __init from
64 * tms380tr_init_card.
65 * 22-Jul-05 JF Converted to dma-mapping.
66 *
67 * To do:
68 * 1. Multi/Broadcast packet handling (this may have fixed itself)
69 * 2. Write a sktrisa module that includes the old ISA support (done)
70 * 3. Allow modules to load their own microcode
71 * 4. Speed up the BUD process -- freezing the kernel for 3+sec is
72 * quite unacceptable.
73 * 5. Still a few remaining stalls when the cable is unplugged.
74 */
75
76 #ifdef MODULE
77 static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
78 #endif
79
80 #include <linux/module.h>
81 #include <linux/kernel.h>
82 #include <linux/types.h>
83 #include <linux/fcntl.h>
84 #include <linux/interrupt.h>
85 #include <linux/ptrace.h>
86 #include <linux/ioport.h>
87 #include <linux/in.h>
88 #include <linux/slab.h>
89 #include <linux/string.h>
90 #include <linux/time.h>
91 #include <linux/errno.h>
92 #include <linux/init.h>
93 #include <linux/dma-mapping.h>
94 #include <linux/delay.h>
95 #include <linux/netdevice.h>
96 #include <linux/etherdevice.h>
97 #include <linux/skbuff.h>
98 #include <linux/trdevice.h>
99 #include <linux/firmware.h>
100 #include <linux/bitops.h>
101
102 #include <asm/system.h>
103 #include <asm/io.h>
104 #include <asm/dma.h>
105 #include <asm/irq.h>
106 #include <asm/uaccess.h>
107
108 #include "tms380tr.h" /* Our Stuff */
109
110 /* Use 0 for production, 1 for verification, 2 for debug, and
111 * 3 for very verbose debug.
112 */
113 #ifndef TMS380TR_DEBUG
114 #define TMS380TR_DEBUG 0
115 #endif
116 static unsigned int tms380tr_debug = TMS380TR_DEBUG;
117
118 /* Index to functions, as function prototypes.
119 * Alphabetical by function name.
120 */
121
122 /* "A" */
123 /* "B" */
124 static int tms380tr_bringup_diags(struct net_device *dev);
125 /* "C" */
126 static void tms380tr_cancel_tx_queue(struct net_local* tp);
127 static int tms380tr_chipset_init(struct net_device *dev);
128 static void tms380tr_chk_irq(struct net_device *dev);
129 static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
130 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
131 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
132 int tms380tr_close(struct net_device *dev);
133 static void tms380tr_cmd_status_irq(struct net_device *dev);
134 /* "D" */
135 static void tms380tr_disable_interrupts(struct net_device *dev);
136 #if TMS380TR_DEBUG > 0
137 static void tms380tr_dump(unsigned char *Data, int length);
138 #endif
139 /* "E" */
140 static void tms380tr_enable_interrupts(struct net_device *dev);
141 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
142 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
143 /* "F" */
144 /* "G" */
145 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
146 /* "H" */
147 static int tms380tr_hardware_send_packet(struct sk_buff *skb,
148 struct net_device *dev);
149 /* "I" */
150 static int tms380tr_init_adapter(struct net_device *dev);
151 static void tms380tr_init_ipb(struct net_local *tp);
152 static void tms380tr_init_net_local(struct net_device *dev);
153 static void tms380tr_init_opb(struct net_device *dev);
154 /* "M" */
155 /* "O" */
156 int tms380tr_open(struct net_device *dev);
157 static void tms380tr_open_adapter(struct net_device *dev);
158 /* "P" */
159 /* "R" */
160 static void tms380tr_rcv_status_irq(struct net_device *dev);
161 static int tms380tr_read_ptr(struct net_device *dev);
162 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
163 unsigned short Address, int Length);
164 static int tms380tr_reset_adapter(struct net_device *dev);
165 static void tms380tr_reset_interrupt(struct net_device *dev);
166 static void tms380tr_ring_status_irq(struct net_device *dev);
167 /* "S" */
168 static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev);
169 static void tms380tr_set_multicast_list(struct net_device *dev);
170 static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
171 /* "T" */
172 static void tms380tr_timer_chk(unsigned long data);
173 static void tms380tr_timer_end_wait(unsigned long data);
174 static void tms380tr_tx_status_irq(struct net_device *dev);
175 /* "U" */
176 static void tms380tr_update_rcv_stats(struct net_local *tp,
177 unsigned char DataPtr[], unsigned int Length);
178 /* "W" */
179 void tms380tr_wait(unsigned long time);
180 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
181 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
182
183 #define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg))
184 #define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg))
185 #define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg))
186 #define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg))
187
188
189
190 #if 0 /* TMS380TR_DEBUG > 0 */
191 static int madgemc_sifprobe(struct net_device *dev)
192 {
193 unsigned char old, chk1, chk2;
194
195 old = SIFREADB(SIFADR); /* Get the old SIFADR value */
196
197 chk1 = 0; /* Begin with check value 0 */
198 do {
199 madgemc_setregpage(dev, 0);
200 /* Write new SIFADR value */
201 SIFWRITEB(chk1, SIFADR);
202 chk2 = SIFREADB(SIFADR);
203 if (chk2 != chk1)
204 return -1;
205
206 madgemc_setregpage(dev, 1);
207 /* Read, invert and write */
208 chk2 = SIFREADB(SIFADD);
209 if (chk2 != chk1)
210 return -1;
211
212 madgemc_setregpage(dev, 0);
213 chk2 ^= 0x0FE;
214 SIFWRITEB(chk2, SIFADR);
215
216 /* Read, invert and compare */
217 madgemc_setregpage(dev, 1);
218 chk2 = SIFREADB(SIFADD);
219 madgemc_setregpage(dev, 0);
220 chk2 ^= 0x0FE;
221
222 if(chk1 != chk2)
223 return (-1); /* No adapter */
224 chk1 -= 2;
225 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
226
227 madgemc_setregpage(dev, 0); /* sanity */
228 /* Restore the SIFADR value */
229 SIFWRITEB(old, SIFADR);
230
231 return (0);
232 }
233 #endif
234
235 /*
236 * Open/initialize the board. This is called sometime after
237 * booting when the 'ifconfig' program is run.
238 *
239 * This routine should set everything up anew at each open, even
240 * registers that "should" only need to be set once at boot, so that
241 * there is non-reboot way to recover if something goes wrong.
242 */
243 int tms380tr_open(struct net_device *dev)
244 {
245 struct net_local *tp = netdev_priv(dev);
246 int err;
247
248 /* init the spinlock */
249 spin_lock_init(&tp->lock);
250 init_timer(&tp->timer);
251
252 /* Reset the hardware here. Don't forget to set the station address. */
253
254 #ifdef CONFIG_ISA
255 if(dev->dma > 0)
256 {
257 unsigned long flags=claim_dma_lock();
258 disable_dma(dev->dma);
259 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
260 enable_dma(dev->dma);
261 release_dma_lock(flags);
262 }
263 #endif
264
265 err = tms380tr_chipset_init(dev);
266 if(err)
267 {
268 printk(KERN_INFO "%s: Chipset initialization error\n",
269 dev->name);
270 return (-1);
271 }
272
273 tp->timer.expires = jiffies + 30*HZ;
274 tp->timer.function = tms380tr_timer_end_wait;
275 tp->timer.data = (unsigned long)dev;
276 add_timer(&tp->timer);
277
278 printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
279 dev->name, tms380tr_read_ptr(dev));
280
281 tms380tr_enable_interrupts(dev);
282 tms380tr_open_adapter(dev);
283
284 netif_start_queue(dev);
285
286 /* Wait for interrupt from hardware. If interrupt does not come,
287 * there will be a timeout from the timer.
288 */
289 tp->Sleeping = 1;
290 interruptible_sleep_on(&tp->wait_for_tok_int);
291 del_timer(&tp->timer);
292
293 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
294 if(tp->AdapterVirtOpenFlag == 0)
295 {
296 tms380tr_disable_interrupts(dev);
297 return (-1);
298 }
299
300 tp->StartTime = jiffies;
301
302 /* Start function control timer */
303 tp->timer.expires = jiffies + 2*HZ;
304 tp->timer.function = tms380tr_timer_chk;
305 tp->timer.data = (unsigned long)dev;
306 add_timer(&tp->timer);
307
308 return (0);
309 }
310
311 /*
312 * Timeout function while waiting for event
313 */
314 static void tms380tr_timer_end_wait(unsigned long data)
315 {
316 struct net_device *dev = (struct net_device*)data;
317 struct net_local *tp = netdev_priv(dev);
318
319 if(tp->Sleeping)
320 {
321 tp->Sleeping = 0;
322 wake_up_interruptible(&tp->wait_for_tok_int);
323 }
324
325 return;
326 }
327
328 /*
329 * Initialize the chipset
330 */
331 static int tms380tr_chipset_init(struct net_device *dev)
332 {
333 struct net_local *tp = netdev_priv(dev);
334 int err;
335
336 tms380tr_init_ipb(tp);
337 tms380tr_init_opb(dev);
338 tms380tr_init_net_local(dev);
339
340 if(tms380tr_debug > 3)
341 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
342 err = tms380tr_reset_adapter(dev);
343 if(err < 0)
344 return (-1);
345
346 if(tms380tr_debug > 3)
347 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
348 err = tms380tr_bringup_diags(dev);
349 if(err < 0)
350 return (-1);
351
352 if(tms380tr_debug > 3)
353 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
354 err = tms380tr_init_adapter(dev);
355 if(err < 0)
356 return (-1);
357
358 if(tms380tr_debug > 3)
359 printk(KERN_DEBUG "%s: Done!\n", dev->name);
360 return (0);
361 }
362
363 /*
364 * Initializes the net_local structure.
365 */
366 static void tms380tr_init_net_local(struct net_device *dev)
367 {
368 struct net_local *tp = netdev_priv(dev);
369 int i;
370 dma_addr_t dmabuf;
371
372 tp->scb.CMD = 0;
373 tp->scb.Parm[0] = 0;
374 tp->scb.Parm[1] = 0;
375
376 tp->ssb.STS = 0;
377 tp->ssb.Parm[0] = 0;
378 tp->ssb.Parm[1] = 0;
379 tp->ssb.Parm[2] = 0;
380
381 tp->CMDqueue = 0;
382
383 tp->AdapterOpenFlag = 0;
384 tp->AdapterVirtOpenFlag = 0;
385 tp->ScbInUse = 0;
386 tp->OpenCommandIssued = 0;
387 tp->ReOpenInProgress = 0;
388 tp->HaltInProgress = 0;
389 tp->TransmitHaltScheduled = 0;
390 tp->LobeWireFaultLogged = 0;
391 tp->LastOpenStatus = 0;
392 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
393
394 /* Create circular chain of transmit lists */
395 for (i = 0; i < TPL_NUM; i++)
396 {
397 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
398 tp->Tpl[i].Status = 0;
399 tp->Tpl[i].FrameSize = 0;
400 tp->Tpl[i].FragList[0].DataCount = 0;
401 tp->Tpl[i].FragList[0].DataAddr = 0;
402 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
403 tp->Tpl[i].MData = NULL;
404 tp->Tpl[i].TPLIndex = i;
405 tp->Tpl[i].DMABuff = 0;
406 tp->Tpl[i].BusyFlag = 0;
407 }
408
409 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
410
411 /* Create circular chain of receive lists */
412 for (i = 0; i < RPL_NUM; i++)
413 {
414 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
415 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
416 tp->Rpl[i].FrameSize = 0;
417 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
418
419 /* Alloc skb and point adapter to data area */
420 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
421 tp->Rpl[i].DMABuff = 0;
422
423 /* skb == NULL ? then use local buffer */
424 if(tp->Rpl[i].Skb == NULL)
425 {
426 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
427 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
428 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
429 }
430 else /* SKB != NULL */
431 {
432 tp->Rpl[i].Skb->dev = dev;
433 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
434
435 /* data unreachable for DMA ? then use local buffer */
436 dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
437 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
438 {
439 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
440 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
441 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
442 }
443 else /* DMA directly in skb->data */
444 {
445 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
446 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
447 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
448 tp->Rpl[i].DMABuff = dmabuf;
449 }
450 }
451
452 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
453 tp->Rpl[i].RPLIndex = i;
454 }
455
456 tp->RplHead = &tp->Rpl[0];
457 tp->RplTail = &tp->Rpl[RPL_NUM-1];
458 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
459
460 return;
461 }
462
463 /*
464 * Initializes the initialisation parameter block.
465 */
466 static void tms380tr_init_ipb(struct net_local *tp)
467 {
468 tp->ipb.Init_Options = BURST_MODE;
469 tp->ipb.CMD_Status_IV = 0;
470 tp->ipb.TX_IV = 0;
471 tp->ipb.RX_IV = 0;
472 tp->ipb.Ring_Status_IV = 0;
473 tp->ipb.SCB_Clear_IV = 0;
474 tp->ipb.Adapter_CHK_IV = 0;
475 tp->ipb.RX_Burst_Size = BURST_SIZE;
476 tp->ipb.TX_Burst_Size = BURST_SIZE;
477 tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
478 tp->ipb.SCB_Addr = 0;
479 tp->ipb.SSB_Addr = 0;
480
481 return;
482 }
483
484 /*
485 * Initializes the open parameter block.
486 */
487 static void tms380tr_init_opb(struct net_device *dev)
488 {
489 struct net_local *tp;
490 unsigned long Addr;
491 unsigned short RplSize = RPL_SIZE;
492 unsigned short TplSize = TPL_SIZE;
493 unsigned short BufferSize = BUFFER_SIZE;
494 int i;
495
496 tp = netdev_priv(dev);
497
498 tp->ocpl.OPENOptions = 0;
499 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
500 tp->ocpl.FullDuplex = 0;
501 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
502
503 /*
504 * Set node address
505 *
506 * We go ahead and put it in the OPB even though on
507 * most of the generic adapters this isn't required.
508 * Its simpler this way. -- ASF
509 */
510 for (i=0;i<6;i++)
511 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
512
513 tp->ocpl.GroupAddr = 0;
514 tp->ocpl.FunctAddr = 0;
515 tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
516 tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
517 tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
518 tp->ocpl.Reserved = 0;
519 tp->ocpl.TXBufMin = TX_BUF_MIN;
520 tp->ocpl.TXBufMax = TX_BUF_MAX;
521
522 Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
523
524 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
525 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
526
527 return;
528 }
529
530 /*
531 * Send OPEN command to adapter
532 */
533 static void tms380tr_open_adapter(struct net_device *dev)
534 {
535 struct net_local *tp = netdev_priv(dev);
536
537 if(tp->OpenCommandIssued)
538 return;
539
540 tp->OpenCommandIssued = 1;
541 tms380tr_exec_cmd(dev, OC_OPEN);
542
543 return;
544 }
545
546 /*
547 * Clear the adapter's interrupt flag. Clear system interrupt enable
548 * (SINTEN): disable adapter to system interrupts.
549 */
550 static void tms380tr_disable_interrupts(struct net_device *dev)
551 {
552 SIFWRITEB(0, SIFACL);
553
554 return;
555 }
556
557 /*
558 * Set the adapter's interrupt flag. Set system interrupt enable
559 * (SINTEN): enable adapter to system interrupts.
560 */
561 static void tms380tr_enable_interrupts(struct net_device *dev)
562 {
563 SIFWRITEB(ACL_SINTEN, SIFACL);
564
565 return;
566 }
567
568 /*
569 * Put command in command queue, try to execute it.
570 */
571 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
572 {
573 struct net_local *tp = netdev_priv(dev);
574
575 tp->CMDqueue |= Command;
576 tms380tr_chk_outstanding_cmds(dev);
577
578 return;
579 }
580
581 static void tms380tr_timeout(struct net_device *dev)
582 {
583 /*
584 * If we get here, some higher level has decided we are broken.
585 * There should really be a "kick me" function call instead.
586 *
587 * Resetting the token ring adapter takes a long time so just
588 * fake transmission time and go on trying. Our own timeout
589 * routine is in tms380tr_timer_chk()
590 */
591 dev->trans_start = jiffies;
592 netif_wake_queue(dev);
593 }
594
595 /*
596 * Gets skb from system, queues it and checks if it can be sent
597 */
598 static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev)
599 {
600 struct net_local *tp = netdev_priv(dev);
601 int err;
602
603 err = tms380tr_hardware_send_packet(skb, dev);
604 if(tp->TplFree->NextTPLPtr->BusyFlag)
605 netif_stop_queue(dev);
606 return (err);
607 }
608
609 /*
610 * Move frames into adapter tx queue
611 */
612 static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev)
613 {
614 TPL *tpl;
615 short length;
616 unsigned char *buf;
617 unsigned long flags;
618 int i;
619 dma_addr_t dmabuf, newbuf;
620 struct net_local *tp = netdev_priv(dev);
621
622 /* Try to get a free TPL from the chain.
623 *
624 * NOTE: We *must* always leave one unused TPL in the chain,
625 * because otherwise the adapter might send frames twice.
626 */
627 spin_lock_irqsave(&tp->lock, flags);
628 if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
629 if (tms380tr_debug > 0)
630 printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
631 spin_unlock_irqrestore(&tp->lock, flags);
632 return 1;
633 }
634
635 dmabuf = 0;
636
637 /* Is buffer reachable for Busmaster-DMA? */
638
639 length = skb->len;
640 dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE);
641 if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
642 /* Copy frame to local buffer */
643 dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE);
644 dmabuf = 0;
645 i = tp->TplFree->TPLIndex;
646 buf = tp->LocalTxBuffers[i];
647 memcpy(buf, skb->data, length);
648 newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
649 }
650 else {
651 /* Send direct from skb->data */
652 newbuf = dmabuf;
653 buf = skb->data;
654 }
655 /* Source address in packet? */
656 tms380tr_chk_src_addr(buf, dev->dev_addr);
657 tp->LastSendTime = jiffies;
658 tpl = tp->TplFree; /* Get the "free" TPL */
659 tpl->BusyFlag = 1; /* Mark TPL as busy */
660 tp->TplFree = tpl->NextTPLPtr;
661
662 /* Save the skb for delayed return of skb to system */
663 tpl->Skb = skb;
664 tpl->DMABuff = dmabuf;
665 tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
666 tpl->FragList[0].DataAddr = htonl(newbuf);
667
668 /* Write the data length in the transmit list. */
669 tpl->FrameSize = cpu_to_be16((unsigned short)length);
670 tpl->MData = buf;
671
672 /* Transmit the frame and set the status values. */
673 tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
674 | TX_END_FRAME | TX_PASS_SRC_ADDR
675 | TX_FRAME_IRQ);
676
677 /* Let adapter send the frame. */
678 tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
679 spin_unlock_irqrestore(&tp->lock, flags);
680
681 return 0;
682 }
683
684 /*
685 * Write the given value to the 'Status' field of the specified TPL.
686 * NOTE: This function should be used whenever the status of any TPL must be
687 * modified by the driver, because the compiler may otherwise change the
688 * order of instructions such that writing the TPL status may be executed at
689 * an undesireable time. When this function is used, the status is always
690 * written when the function is called.
691 */
692 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
693 {
694 tpl->Status = Status;
695 }
696
697 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
698 {
699 unsigned char SRBit;
700
701 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
702 return;
703 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
704 return;
705
706 SRBit = frame[8] & 0x80;
707 memcpy(&frame[8], hw_addr, 6);
708 frame[8] |= SRBit;
709
710 return;
711 }
712
713 /*
714 * The timer routine: Check if adapter still open and working, reopen if not.
715 */
716 static void tms380tr_timer_chk(unsigned long data)
717 {
718 struct net_device *dev = (struct net_device*)data;
719 struct net_local *tp = netdev_priv(dev);
720
721 if(tp->HaltInProgress)
722 return;
723
724 tms380tr_chk_outstanding_cmds(dev);
725 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
726 && (tp->TplFree != tp->TplBusy))
727 {
728 /* Anything to send, but stalled too long */
729 tp->LastSendTime = jiffies;
730 tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
731 }
732
733 tp->timer.expires = jiffies + 2*HZ;
734 add_timer(&tp->timer);
735
736 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
737 return;
738 tp->ReOpenInProgress = 1;
739 tms380tr_open_adapter(dev);
740
741 return;
742 }
743
744 /*
745 * The typical workload of the driver: Handle the network interface interrupts.
746 */
747 irqreturn_t tms380tr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
748 {
749 struct net_device *dev = dev_id;
750 struct net_local *tp;
751 unsigned short irq_type;
752 int handled = 0;
753
754 if(dev == NULL) {
755 printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
756 return IRQ_NONE;
757 }
758
759 tp = netdev_priv(dev);
760
761 irq_type = SIFREADW(SIFSTS);
762
763 while(irq_type & STS_SYSTEM_IRQ) {
764 handled = 1;
765 irq_type &= STS_IRQ_MASK;
766
767 if(!tms380tr_chk_ssb(tp, irq_type)) {
768 printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
769 break;
770 }
771
772 switch(irq_type) {
773 case STS_IRQ_RECEIVE_STATUS:
774 tms380tr_reset_interrupt(dev);
775 tms380tr_rcv_status_irq(dev);
776 break;
777
778 case STS_IRQ_TRANSMIT_STATUS:
779 /* Check if TRANSMIT.HALT command is complete */
780 if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
781 tp->TransmitCommandActive = 0;
782 tp->TransmitHaltScheduled = 0;
783
784 /* Issue a new transmit command. */
785 tms380tr_exec_cmd(dev, OC_TRANSMIT);
786 }
787
788 tms380tr_reset_interrupt(dev);
789 tms380tr_tx_status_irq(dev);
790 break;
791
792 case STS_IRQ_COMMAND_STATUS:
793 /* The SSB contains status of last command
794 * other than receive/transmit.
795 */
796 tms380tr_cmd_status_irq(dev);
797 break;
798
799 case STS_IRQ_SCB_CLEAR:
800 /* The SCB is free for another command. */
801 tp->ScbInUse = 0;
802 tms380tr_chk_outstanding_cmds(dev);
803 break;
804
805 case STS_IRQ_RING_STATUS:
806 tms380tr_ring_status_irq(dev);
807 break;
808
809 case STS_IRQ_ADAPTER_CHECK:
810 tms380tr_chk_irq(dev);
811 break;
812
813 case STS_IRQ_LLC_STATUS:
814 printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
815 break;
816
817 case STS_IRQ_TIMER:
818 printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
819 break;
820
821 case STS_IRQ_RECEIVE_PENDING:
822 printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
823 break;
824
825 default:
826 printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
827 break;
828 }
829
830 /* Reset system interrupt if not already done. */
831 if(irq_type != STS_IRQ_TRANSMIT_STATUS
832 && irq_type != STS_IRQ_RECEIVE_STATUS) {
833 tms380tr_reset_interrupt(dev);
834 }
835
836 irq_type = SIFREADW(SIFSTS);
837 }
838
839 return IRQ_RETVAL(handled);
840 }
841
842 /*
843 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
844 */
845 static void tms380tr_reset_interrupt(struct net_device *dev)
846 {
847 struct net_local *tp = netdev_priv(dev);
848 SSB *ssb = &tp->ssb;
849
850 /*
851 * [Workaround for "Data Late"]
852 * Set all fields of the SSB to well-defined values so we can
853 * check if the adapter has written the SSB.
854 */
855
856 ssb->STS = (unsigned short) -1;
857 ssb->Parm[0] = (unsigned short) -1;
858 ssb->Parm[1] = (unsigned short) -1;
859 ssb->Parm[2] = (unsigned short) -1;
860
861 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
862 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
863 */
864 tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
865
866 return;
867 }
868
869 /*
870 * Check if the SSB has actually been written by the adapter.
871 */
872 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
873 {
874 SSB *ssb = &tp->ssb; /* The address of the SSB. */
875
876 /* C 0 1 2 INTERRUPT CODE
877 * - - - - --------------
878 * 1 1 1 1 TRANSMIT STATUS
879 * 1 1 1 1 RECEIVE STATUS
880 * 1 ? ? 0 COMMAND STATUS
881 * 0 0 0 0 SCB CLEAR
882 * 1 1 0 0 RING STATUS
883 * 0 0 0 0 ADAPTER CHECK
884 *
885 * 0 = SSB field not affected by interrupt
886 * 1 = SSB field is affected by interrupt
887 *
888 * C = SSB ADDRESS +0: COMMAND
889 * 0 = SSB ADDRESS +2: STATUS 0
890 * 1 = SSB ADDRESS +4: STATUS 1
891 * 2 = SSB ADDRESS +6: STATUS 2
892 */
893
894 /* Check if this interrupt does use the SSB. */
895
896 if(IrqType != STS_IRQ_TRANSMIT_STATUS
897 && IrqType != STS_IRQ_RECEIVE_STATUS
898 && IrqType != STS_IRQ_COMMAND_STATUS
899 && IrqType != STS_IRQ_RING_STATUS)
900 {
901 return (1); /* SSB not involved. */
902 }
903
904 /* Note: All fields of the SSB have been set to all ones (-1) after it
905 * has last been used by the software (see DriverIsr()).
906 *
907 * Check if the affected SSB fields are still unchanged.
908 */
909
910 if(ssb->STS == (unsigned short) -1)
911 return (0); /* Command field not yet available. */
912 if(IrqType == STS_IRQ_COMMAND_STATUS)
913 return (1); /* Status fields not always affected. */
914 if(ssb->Parm[0] == (unsigned short) -1)
915 return (0); /* Status 1 field not yet available. */
916 if(IrqType == STS_IRQ_RING_STATUS)
917 return (1); /* Status 2 & 3 fields not affected. */
918
919 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
920 if(ssb->Parm[1] == (unsigned short) -1)
921 return (0); /* Status 2 field not yet available. */
922 if(ssb->Parm[2] == (unsigned short) -1)
923 return (0); /* Status 3 field not yet available. */
924
925 return (1); /* All SSB fields have been written by the adapter. */
926 }
927
928 /*
929 * Evaluates the command results status in the SSB status field.
930 */
931 static void tms380tr_cmd_status_irq(struct net_device *dev)
932 {
933 struct net_local *tp = netdev_priv(dev);
934 unsigned short ssb_cmd, ssb_parm_0;
935 unsigned short ssb_parm_1;
936 char *open_err = "Open error -";
937 char *code_err = "Open code -";
938
939 /* Copy the ssb values to local variables */
940 ssb_cmd = tp->ssb.STS;
941 ssb_parm_0 = tp->ssb.Parm[0];
942 ssb_parm_1 = tp->ssb.Parm[1];
943
944 if(ssb_cmd == OPEN)
945 {
946 tp->Sleeping = 0;
947 if(!tp->ReOpenInProgress)
948 wake_up_interruptible(&tp->wait_for_tok_int);
949
950 tp->OpenCommandIssued = 0;
951 tp->ScbInUse = 0;
952
953 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
954 {
955 /* Success, the adapter is open. */
956 tp->LobeWireFaultLogged = 0;
957 tp->AdapterOpenFlag = 1;
958 tp->AdapterVirtOpenFlag = 1;
959 tp->TransmitCommandActive = 0;
960 tms380tr_exec_cmd(dev, OC_TRANSMIT);
961 tms380tr_exec_cmd(dev, OC_RECEIVE);
962
963 if(tp->ReOpenInProgress)
964 tp->ReOpenInProgress = 0;
965
966 return;
967 }
968 else /* The adapter did not open. */
969 {
970 if(ssb_parm_0 & NODE_ADDR_ERROR)
971 printk(KERN_INFO "%s: Node address error\n",
972 dev->name);
973 if(ssb_parm_0 & LIST_SIZE_ERROR)
974 printk(KERN_INFO "%s: List size error\n",
975 dev->name);
976 if(ssb_parm_0 & BUF_SIZE_ERROR)
977 printk(KERN_INFO "%s: Buffer size error\n",
978 dev->name);
979 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
980 printk(KERN_INFO "%s: Tx buffer count error\n",
981 dev->name);
982 if(ssb_parm_0 & INVALID_OPEN_OPTION)
983 printk(KERN_INFO "%s: Invalid open option\n",
984 dev->name);
985 if(ssb_parm_0 & OPEN_ERROR)
986 {
987 /* Show the open phase. */
988 switch(ssb_parm_0 & OPEN_PHASES_MASK)
989 {
990 case LOBE_MEDIA_TEST:
991 if(!tp->LobeWireFaultLogged)
992 {
993 tp->LobeWireFaultLogged = 1;
994 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
995 }
996 tp->ReOpenInProgress = 1;
997 tp->AdapterOpenFlag = 0;
998 tp->AdapterVirtOpenFlag = 1;
999 tms380tr_open_adapter(dev);
1000 return;
1001
1002 case PHYSICAL_INSERTION:
1003 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
1004 break;
1005
1006 case ADDRESS_VERIFICATION:
1007 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1008 break;
1009
1010 case PARTICIPATION_IN_RING_POLL:
1011 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1012 break;
1013
1014 case REQUEST_INITIALISATION:
1015 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1016 break;
1017
1018 case FULLDUPLEX_CHECK:
1019 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1020 break;
1021
1022 default:
1023 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1024 break;
1025 }
1026
1027 /* Show the open errors. */
1028 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1029 {
1030 case OPEN_FUNCTION_FAILURE:
1031 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1032 tp->LastOpenStatus =
1033 OPEN_FUNCTION_FAILURE;
1034 break;
1035
1036 case OPEN_SIGNAL_LOSS:
1037 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1038 tp->LastOpenStatus =
1039 OPEN_SIGNAL_LOSS;
1040 break;
1041
1042 case OPEN_TIMEOUT:
1043 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1044 tp->LastOpenStatus =
1045 OPEN_TIMEOUT;
1046 break;
1047
1048 case OPEN_RING_FAILURE:
1049 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1050 tp->LastOpenStatus =
1051 OPEN_RING_FAILURE;
1052 break;
1053
1054 case OPEN_RING_BEACONING:
1055 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1056 tp->LastOpenStatus =
1057 OPEN_RING_BEACONING;
1058 break;
1059
1060 case OPEN_DUPLICATE_NODEADDR:
1061 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1062 tp->LastOpenStatus =
1063 OPEN_DUPLICATE_NODEADDR;
1064 break;
1065
1066 case OPEN_REQUEST_INIT:
1067 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1068 tp->LastOpenStatus =
1069 OPEN_REQUEST_INIT;
1070 break;
1071
1072 case OPEN_REMOVE_RECEIVED:
1073 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1074 tp->LastOpenStatus =
1075 OPEN_REMOVE_RECEIVED;
1076 break;
1077
1078 case OPEN_FULLDUPLEX_SET:
1079 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1080 tp->LastOpenStatus =
1081 OPEN_FULLDUPLEX_SET;
1082 break;
1083
1084 default:
1085 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1086 tp->LastOpenStatus =
1087 OPEN_FUNCTION_FAILURE;
1088 break;
1089 }
1090 }
1091
1092 tp->AdapterOpenFlag = 0;
1093 tp->AdapterVirtOpenFlag = 0;
1094
1095 return;
1096 }
1097 }
1098 else
1099 {
1100 if(ssb_cmd != READ_ERROR_LOG)
1101 return;
1102
1103 /* Add values from the error log table to the MAC
1104 * statistics counters and update the errorlogtable
1105 * memory.
1106 */
1107 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1108 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1109 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1110 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1111 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1112 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1113 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1114 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1115 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1116 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1117 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1118 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1119 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1120 }
1121
1122 return;
1123 }
1124
1125 /*
1126 * The inverse routine to tms380tr_open().
1127 */
1128 int tms380tr_close(struct net_device *dev)
1129 {
1130 struct net_local *tp = netdev_priv(dev);
1131 netif_stop_queue(dev);
1132
1133 del_timer(&tp->timer);
1134
1135 /* Flush the Tx and disable Rx here. */
1136
1137 tp->HaltInProgress = 1;
1138 tms380tr_exec_cmd(dev, OC_CLOSE);
1139 tp->timer.expires = jiffies + 1*HZ;
1140 tp->timer.function = tms380tr_timer_end_wait;
1141 tp->timer.data = (unsigned long)dev;
1142 add_timer(&tp->timer);
1143
1144 tms380tr_enable_interrupts(dev);
1145
1146 tp->Sleeping = 1;
1147 interruptible_sleep_on(&tp->wait_for_tok_int);
1148 tp->TransmitCommandActive = 0;
1149
1150 del_timer(&tp->timer);
1151 tms380tr_disable_interrupts(dev);
1152
1153 #ifdef CONFIG_ISA
1154 if(dev->dma > 0)
1155 {
1156 unsigned long flags=claim_dma_lock();
1157 disable_dma(dev->dma);
1158 release_dma_lock(flags);
1159 }
1160 #endif
1161
1162 SIFWRITEW(0xFF00, SIFCMD);
1163 #if 0
1164 if(dev->dma > 0) /* what the? */
1165 SIFWRITEB(0xff, POSREG);
1166 #endif
1167 tms380tr_cancel_tx_queue(tp);
1168
1169 return (0);
1170 }
1171
1172 /*
1173 * Get the current statistics. This may be called with the card open
1174 * or closed.
1175 */
1176 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1177 {
1178 struct net_local *tp = netdev_priv(dev);
1179
1180 return ((struct net_device_stats *)&tp->MacStat);
1181 }
1182
1183 /*
1184 * Set or clear the multicast filter for this adapter.
1185 */
1186 static void tms380tr_set_multicast_list(struct net_device *dev)
1187 {
1188 struct net_local *tp = netdev_priv(dev);
1189 unsigned int OpenOptions;
1190
1191 OpenOptions = tp->ocpl.OPENOptions &
1192 ~(PASS_ADAPTER_MAC_FRAMES
1193 | PASS_ATTENTION_FRAMES
1194 | PASS_BEACON_MAC_FRAMES
1195 | COPY_ALL_MAC_FRAMES
1196 | COPY_ALL_NON_MAC_FRAMES);
1197
1198 tp->ocpl.FunctAddr = 0;
1199
1200 if(dev->flags & IFF_PROMISC)
1201 /* Enable promiscuous mode */
1202 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1203 COPY_ALL_MAC_FRAMES;
1204 else
1205 {
1206 if(dev->flags & IFF_ALLMULTI)
1207 {
1208 /* Disable promiscuous mode, use normal mode. */
1209 tp->ocpl.FunctAddr = 0xFFFFFFFF;
1210 }
1211 else
1212 {
1213 int i;
1214 struct dev_mc_list *mclist = dev->mc_list;
1215 for (i=0; i< dev->mc_count; i++)
1216 {
1217 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1218 mclist->dmi_addr[2];
1219 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1220 mclist->dmi_addr[3];
1221 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1222 mclist->dmi_addr[4];
1223 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1224 mclist->dmi_addr[5];
1225 mclist = mclist->next;
1226 }
1227 }
1228 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1229 }
1230
1231 tp->ocpl.OPENOptions = OpenOptions;
1232 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1233 return;
1234 }
1235
1236 /*
1237 * Wait for some time (microseconds)
1238 */
1239 void tms380tr_wait(unsigned long time)
1240 {
1241 #if 0
1242 long tmp;
1243
1244 tmp = jiffies + time/(1000000/HZ);
1245 do {
1246 tmp = schedule_timeout_interruptible(tmp);
1247 } while(time_after(tmp, jiffies));
1248 #else
1249 udelay(time);
1250 #endif
1251 return;
1252 }
1253
1254 /*
1255 * Write a command value to the SIFCMD register
1256 */
1257 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1258 {
1259 unsigned short cmd;
1260 unsigned short SifStsValue;
1261 unsigned long loop_counter;
1262
1263 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1264 cmd = (unsigned short)WriteValue;
1265 loop_counter = 0,5 * 800000;
1266 do {
1267 SifStsValue = SIFREADW(SIFSTS);
1268 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1269 SIFWRITEW(cmd, SIFCMD);
1270
1271 return;
1272 }
1273
1274 /*
1275 * Processes adapter hardware reset, halts adapter and downloads firmware,
1276 * clears the halt bit.
1277 */
1278 static int tms380tr_reset_adapter(struct net_device *dev)
1279 {
1280 struct net_local *tp = netdev_priv(dev);
1281 unsigned short *fw_ptr;
1282 unsigned short count, c, count2;
1283 const struct firmware *fw_entry = NULL;
1284
1285 if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1286 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1287 dev->name, "tms380tr.bin");
1288 return (-1);
1289 }
1290
1291 fw_ptr = (unsigned short *)fw_entry->data;
1292 count2 = fw_entry->size / 2;
1293
1294 /* Hardware adapter reset */
1295 SIFWRITEW(ACL_ARESET, SIFACL);
1296 tms380tr_wait(40);
1297
1298 c = SIFREADW(SIFACL);
1299 tms380tr_wait(20);
1300
1301 if(dev->dma == 0) /* For PCI adapters */
1302 {
1303 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1304 if(tp->setnselout)
1305 c |= (*tp->setnselout)(dev);
1306 }
1307
1308 /* In case a command is pending - forget it */
1309 tp->ScbInUse = 0;
1310
1311 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1312 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1313 c |= ACL_BOOT;
1314 c |= ACL_SINTEN;
1315 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1316 SIFWRITEW(c, SIFACL);
1317 tms380tr_wait(40);
1318
1319 count = 0;
1320 /* Download firmware via DIO interface: */
1321 do {
1322 if (count2 < 3) continue;
1323
1324 /* Download first address part */
1325 SIFWRITEW(*fw_ptr, SIFADX);
1326 fw_ptr++;
1327 count2--;
1328 /* Download second address part */
1329 SIFWRITEW(*fw_ptr, SIFADD);
1330 fw_ptr++;
1331 count2--;
1332
1333 if((count = *fw_ptr) != 0) /* Load loop counter */
1334 {
1335 fw_ptr++; /* Download block data */
1336 count2--;
1337 if (count > count2) continue;
1338
1339 for(; count > 0; count--)
1340 {
1341 SIFWRITEW(*fw_ptr, SIFINC);
1342 fw_ptr++;
1343 count2--;
1344 }
1345 }
1346 else /* Stop, if last block downloaded */
1347 {
1348 c = SIFREADW(SIFACL);
1349 c &= (~ACL_CPHALT | ACL_SINTEN);
1350
1351 /* Clear CPHALT and start BUD */
1352 SIFWRITEW(c, SIFACL);
1353 if (fw_entry)
1354 release_firmware(fw_entry);
1355 return (1);
1356 }
1357 } while(count == 0);
1358
1359 if (fw_entry)
1360 release_firmware(fw_entry);
1361 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1362 return (-1);
1363 }
1364
1365 /*
1366 * Starts bring up diagnostics of token ring adapter and evaluates
1367 * diagnostic results.
1368 */
1369 static int tms380tr_bringup_diags(struct net_device *dev)
1370 {
1371 int loop_cnt, retry_cnt;
1372 unsigned short Status;
1373
1374 tms380tr_wait(HALF_SECOND);
1375 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1376 tms380tr_wait(HALF_SECOND);
1377
1378 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1379
1380 do {
1381 retry_cnt--;
1382 if(tms380tr_debug > 3)
1383 printk(KERN_DEBUG "BUD-Status: ");
1384 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1385 do { /* Inspect BUD results */
1386 loop_cnt--;
1387 tms380tr_wait(HALF_SECOND);
1388 Status = SIFREADW(SIFSTS);
1389 Status &= STS_MASK;
1390
1391 if(tms380tr_debug > 3)
1392 printk(KERN_DEBUG " %04X \n", Status);
1393 /* BUD successfully completed */
1394 if(Status == STS_INITIALIZE)
1395 return (1);
1396 /* Unrecoverable hardware error, BUD not completed? */
1397 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1398 != (STS_ERROR | STS_TEST)));
1399
1400 /* Error preventing completion of BUD */
1401 if(retry_cnt > 0)
1402 {
1403 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1404 dev->name);
1405 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1406 tms380tr_wait(HALF_SECOND);
1407 }
1408 } while(retry_cnt > 0);
1409
1410 Status = SIFREADW(SIFSTS);
1411
1412 printk(KERN_INFO "%s: Hardware error\n", dev->name);
1413 /* Hardware error occurred! */
1414 Status &= 0x001f;
1415 if (Status & 0x0010)
1416 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1417 else if ((Status & 0x000f) > 6)
1418 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1419 else
1420 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1421
1422 return (-1);
1423 }
1424
1425 /*
1426 * Copy initialisation data to adapter memory, beginning at address
1427 * 1:0A00; Starting DMA test and evaluating result bits.
1428 */
1429 static int tms380tr_init_adapter(struct net_device *dev)
1430 {
1431 struct net_local *tp = netdev_priv(dev);
1432
1433 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1434 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1435 0xC5, 0xD9, 0xC3, 0xD4};
1436 void *ptr = (void *)&tp->ipb;
1437 unsigned short *ipb_ptr = (unsigned short *)ptr;
1438 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1439 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1440 unsigned short Status;
1441 int i, loop_cnt, retry_cnt;
1442
1443 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1444 tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1445 tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1446
1447 if(tms380tr_debug > 3)
1448 {
1449 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1450 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1451 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1452 printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
1453 }
1454 /* Maximum: three initialization retries */
1455 retry_cnt = INIT_MAX_RETRIES;
1456
1457 do {
1458 retry_cnt--;
1459
1460 /* Transfer initialization block */
1461 SIFWRITEW(0x0001, SIFADX);
1462
1463 /* To address 0001:0A00 of adapter RAM */
1464 SIFWRITEW(0x0A00, SIFADD);
1465
1466 /* Write 11 words to adapter RAM */
1467 for(i = 0; i < 11; i++)
1468 SIFWRITEW(ipb_ptr[i], SIFINC);
1469
1470 /* Execute SCB adapter command */
1471 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1472
1473 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1474
1475 /* While remaining retries, no error and not completed */
1476 do {
1477 Status = 0;
1478 loop_cnt--;
1479 tms380tr_wait(HALF_SECOND);
1480
1481 /* Mask interesting status bits */
1482 Status = SIFREADW(SIFSTS);
1483 Status &= STS_MASK;
1484 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
1485 && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1486
1487 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1488 {
1489 /* Initialization completed without error */
1490 i = 0;
1491 do { /* Test if contents of SCB is valid */
1492 if(SCB_Test[i] != *(cb_ptr + i))
1493 {
1494 printk(KERN_INFO "%s: DMA failed\n", dev->name);
1495 /* DMA data error: wrong data in SCB */
1496 return (-1);
1497 }
1498 i++;
1499 } while(i < 6);
1500
1501 i = 0;
1502 do { /* Test if contents of SSB is valid */
1503 if(SSB_Test[i] != *(sb_ptr + i))
1504 /* DMA data error: wrong data in SSB */
1505 return (-1);
1506 i++;
1507 } while (i < 8);
1508
1509 return (1); /* Adapter successfully initialized */
1510 }
1511 else
1512 {
1513 if((Status & STS_ERROR) != 0)
1514 {
1515 /* Initialization error occurred */
1516 Status = SIFREADW(SIFSTS);
1517 Status &= STS_ERROR_MASK;
1518 /* ShowInitialisationErrorCode(Status); */
1519 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1520 return (-1); /* Unrecoverable error */
1521 }
1522 else
1523 {
1524 if(retry_cnt > 0)
1525 {
1526 /* Reset adapter and try init again */
1527 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1528 tms380tr_wait(HALF_SECOND);
1529 }
1530 }
1531 }
1532 } while(retry_cnt > 0);
1533
1534 printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1535 return (-1);
1536 }
1537
1538 /*
1539 * Check for outstanding commands in command queue and tries to execute
1540 * command immediately. Corresponding command flag in command queue is cleared.
1541 */
1542 static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1543 {
1544 struct net_local *tp = netdev_priv(dev);
1545 unsigned long Addr = 0;
1546
1547 if(tp->CMDqueue == 0)
1548 return; /* No command execution */
1549
1550 /* If SCB in use: no command */
1551 if(tp->ScbInUse == 1)
1552 return;
1553
1554 /* Check if adapter is opened, avoiding COMMAND_REJECT
1555 * interrupt by the adapter!
1556 */
1557 if(tp->AdapterOpenFlag == 0)
1558 {
1559 if(tp->CMDqueue & OC_OPEN)
1560 {
1561 /* Execute OPEN command */
1562 tp->CMDqueue ^= OC_OPEN;
1563
1564 Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1565 tp->scb.Parm[0] = LOWORD(Addr);
1566 tp->scb.Parm[1] = HIWORD(Addr);
1567 tp->scb.CMD = OPEN;
1568 }
1569 else
1570 /* No OPEN command queued, but adapter closed. Note:
1571 * We'll try to re-open the adapter in DriverPoll()
1572 */
1573 return; /* No adapter command issued */
1574 }
1575 else
1576 {
1577 /* Adapter is open; evaluate command queue: try to execute
1578 * outstanding commands (depending on priority!) CLOSE
1579 * command queued
1580 */
1581 if(tp->CMDqueue & OC_CLOSE)
1582 {
1583 tp->CMDqueue ^= OC_CLOSE;
1584 tp->AdapterOpenFlag = 0;
1585 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1586 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1587 tp->scb.CMD = CLOSE;
1588 if(!tp->HaltInProgress)
1589 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1590 else
1591 tp->CMDqueue = 0; /* no more commands */
1592 }
1593 else
1594 {
1595 if(tp->CMDqueue & OC_RECEIVE)
1596 {
1597 tp->CMDqueue ^= OC_RECEIVE;
1598 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1599 tp->scb.Parm[0] = LOWORD(Addr);
1600 tp->scb.Parm[1] = HIWORD(Addr);
1601 tp->scb.CMD = RECEIVE;
1602 }
1603 else
1604 {
1605 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1606 {
1607 /* NOTE: TRANSMIT.HALT must be checked
1608 * before TRANSMIT.
1609 */
1610 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1611 tp->scb.CMD = TRANSMIT_HALT;
1612
1613 /* Parm[0] and Parm[1] are ignored
1614 * but should be set to zero!
1615 */
1616 tp->scb.Parm[0] = 0;
1617 tp->scb.Parm[1] = 0;
1618 }
1619 else
1620 {
1621 if(tp->CMDqueue & OC_TRANSMIT)
1622 {
1623 /* NOTE: TRANSMIT must be
1624 * checked after TRANSMIT.HALT
1625 */
1626 if(tp->TransmitCommandActive)
1627 {
1628 if(!tp->TransmitHaltScheduled)
1629 {
1630 tp->TransmitHaltScheduled = 1;
1631 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1632 }
1633 tp->TransmitCommandActive = 0;
1634 return;
1635 }
1636
1637 tp->CMDqueue ^= OC_TRANSMIT;
1638 tms380tr_cancel_tx_queue(tp);
1639 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1640 tp->scb.Parm[0] = LOWORD(Addr);
1641 tp->scb.Parm[1] = HIWORD(Addr);
1642 tp->scb.CMD = TRANSMIT;
1643 tp->TransmitCommandActive = 1;
1644 }
1645 else
1646 {
1647 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1648 {
1649 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1650 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1651 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1652 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1653 tp->scb.CMD = MODIFY_OPEN_PARMS;
1654 }
1655 else
1656 {
1657 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1658 {
1659 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1660 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1661 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1662 tp->scb.CMD = SET_FUNCT_ADDR;
1663 }
1664 else
1665 {
1666 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1667 {
1668 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1669 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1670 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1671 tp->scb.CMD = SET_GROUP_ADDR;
1672 }
1673 else
1674 {
1675 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1676 {
1677 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1678 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1679 tp->scb.Parm[0] = LOWORD(Addr);
1680 tp->scb.Parm[1] = HIWORD(Addr);
1681 tp->scb.CMD = READ_ERROR_LOG;
1682 }
1683 else
1684 {
1685 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1686 tp->CMDqueue = 0;
1687 return;
1688 }
1689 }
1690 }
1691 }
1692 }
1693 }
1694 }
1695 }
1696 }
1697
1698 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1699
1700 /* Execute SCB and generate IRQ when done. */
1701 tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1702
1703 return;
1704 }
1705
1706 /*
1707 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1708 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1709 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1710 * circuit fault on the lobe is detected; remove MAC frame received;
1711 * error counter overflow (255); opened adapter is the only station in ring.
1712 * After some of the IRQs the adapter is closed!
1713 */
1714 static void tms380tr_ring_status_irq(struct net_device *dev)
1715 {
1716 struct net_local *tp = netdev_priv(dev);
1717
1718 tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1719
1720 /* First: fill up statistics */
1721 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1722 {
1723 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1724 tp->MacStat.line_errors++;
1725 }
1726
1727 /* Adapter is closed, but initialized */
1728 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1729 {
1730 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1731 dev->name);
1732 tp->MacStat.line_errors++;
1733 }
1734
1735 if(tp->ssb.Parm[0] & RING_RECOVERY)
1736 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1737
1738 /* Counter overflow: read error log */
1739 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1740 {
1741 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1742 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1743 }
1744
1745 /* Adapter is closed, but initialized */
1746 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1747 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1748 dev->name);
1749
1750 /* Adapter is closed, but initialized */
1751 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1752 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1753 dev->name);
1754
1755 if(tp->ssb.Parm[0] & HARD_ERROR)
1756 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1757
1758 if(tp->ssb.Parm[0] & SOFT_ERROR)
1759 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1760
1761 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1762 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1763
1764 if(tp->ssb.Parm[0] & SINGLE_STATION)
1765 printk(KERN_INFO "%s: Single Station\n", dev->name);
1766
1767 /* Check if adapter has been closed */
1768 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1769 {
1770 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1771 "CurrentRingStat %x\n",
1772 dev->name, tp->CurrentRingStatus);
1773 tp->AdapterOpenFlag = 0;
1774 tms380tr_open_adapter(dev);
1775 }
1776
1777 return;
1778 }
1779
1780 /*
1781 * Issued if adapter has encountered an unrecoverable hardware
1782 * or software error.
1783 */
1784 static void tms380tr_chk_irq(struct net_device *dev)
1785 {
1786 int i;
1787 unsigned short AdapterCheckBlock[4];
1788 struct net_local *tp = netdev_priv(dev);
1789
1790 tp->AdapterOpenFlag = 0; /* Adapter closed now */
1791
1792 /* Page number of adapter memory */
1793 SIFWRITEW(0x0001, SIFADX);
1794 /* Address offset */
1795 SIFWRITEW(CHECKADDR, SIFADR);
1796
1797 /* Reading 8 byte adapter check block. */
1798 for(i = 0; i < 4; i++)
1799 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1800
1801 if(tms380tr_debug > 3)
1802 {
1803 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1804 for (i = 0; i < 4; i++)
1805 printk("%04X", AdapterCheckBlock[i]);
1806 printk("\n");
1807 }
1808
1809 switch(AdapterCheckBlock[0])
1810 {
1811 case DIO_PARITY:
1812 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1813 break;
1814
1815 case DMA_READ_ABORT:
1816 printk(KERN_INFO "%s DMA read operation aborted:\n",
1817 dev->name);
1818 switch (AdapterCheckBlock[1])
1819 {
1820 case 0:
1821 printk(KERN_INFO "Timeout\n");
1822 printk(KERN_INFO "Address: %04X %04X\n",
1823 AdapterCheckBlock[2],
1824 AdapterCheckBlock[3]);
1825 break;
1826
1827 case 1:
1828 printk(KERN_INFO "Parity error\n");
1829 printk(KERN_INFO "Address: %04X %04X\n",
1830 AdapterCheckBlock[2],
1831 AdapterCheckBlock[3]);
1832 break;
1833
1834 case 2:
1835 printk(KERN_INFO "Bus error\n");
1836 printk(KERN_INFO "Address: %04X %04X\n",
1837 AdapterCheckBlock[2],
1838 AdapterCheckBlock[3]);
1839 break;
1840
1841 default:
1842 printk(KERN_INFO "Unknown error.\n");
1843 break;
1844 }
1845 break;
1846
1847 case DMA_WRITE_ABORT:
1848 printk(KERN_INFO "%s: DMA write operation aborted: \n",
1849 dev->name);
1850 switch (AdapterCheckBlock[1])
1851 {
1852 case 0:
1853 printk(KERN_INFO "Timeout\n");
1854 printk(KERN_INFO "Address: %04X %04X\n",
1855 AdapterCheckBlock[2],
1856 AdapterCheckBlock[3]);
1857 break;
1858
1859 case 1:
1860 printk(KERN_INFO "Parity error\n");
1861 printk(KERN_INFO "Address: %04X %04X\n",
1862 AdapterCheckBlock[2],
1863 AdapterCheckBlock[3]);
1864 break;
1865
1866 case 2:
1867 printk(KERN_INFO "Bus error\n");
1868 printk(KERN_INFO "Address: %04X %04X\n",
1869 AdapterCheckBlock[2],
1870 AdapterCheckBlock[3]);
1871 break;
1872
1873 default:
1874 printk(KERN_INFO "Unknown error.\n");
1875 break;
1876 }
1877 break;
1878
1879 case ILLEGAL_OP_CODE:
1880 printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1881 dev->name);
1882 /* Parm[0-3]: adapter internal register R13-R15 */
1883 break;
1884
1885 case PARITY_ERRORS:
1886 printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1887 dev->name);
1888 /* Parm[0-3]: adapter internal register R13-R15 */
1889 break;
1890
1891 case RAM_DATA_ERROR:
1892 printk(KERN_INFO "%s: RAM data error\n", dev->name);
1893 /* Parm[0-1]: MSW/LSW address of RAM location. */
1894 break;
1895
1896 case RAM_PARITY_ERROR:
1897 printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1898 /* Parm[0-1]: MSW/LSW address of RAM location. */
1899 break;
1900
1901 case RING_UNDERRUN:
1902 printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1903 dev->name);
1904 break;
1905
1906 case INVALID_IRQ:
1907 printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1908 dev->name);
1909 /* Parm[0-3]: adapter internal register R13-R15 */
1910 break;
1911
1912 case INVALID_ERROR_IRQ:
1913 printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1914 dev->name);
1915 /* Parm[0-3]: adapter internal register R13-R15 */
1916 break;
1917
1918 case INVALID_XOP:
1919 printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1920 dev->name);
1921 /* Parm[0-3]: adapter internal register R13-R15 */
1922 break;
1923
1924 default:
1925 printk(KERN_INFO "%s: Unknown status", dev->name);
1926 break;
1927 }
1928
1929 if(tms380tr_chipset_init(dev) == 1)
1930 {
1931 /* Restart of firmware successful */
1932 tp->AdapterOpenFlag = 1;
1933 }
1934
1935 return;
1936 }
1937
1938 /*
1939 * Internal adapter pointer to RAM data are copied from adapter into
1940 * host system.
1941 */
1942 static int tms380tr_read_ptr(struct net_device *dev)
1943 {
1944 struct net_local *tp = netdev_priv(dev);
1945 unsigned short adapterram;
1946
1947 tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1948 ADAPTER_INT_PTRS, 16);
1949 tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1950 cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1951 return be16_to_cpu(adapterram);
1952 }
1953
1954 /*
1955 * Reads a number of bytes from adapter to system memory.
1956 */
1957 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1958 unsigned short Address, int Length)
1959 {
1960 int i;
1961 unsigned short old_sifadx, old_sifadr, InWord;
1962
1963 /* Save the current values */
1964 old_sifadx = SIFREADW(SIFADX);
1965 old_sifadr = SIFREADW(SIFADR);
1966
1967 /* Page number of adapter memory */
1968 SIFWRITEW(0x0001, SIFADX);
1969 /* Address offset in adapter RAM */
1970 SIFWRITEW(Address, SIFADR);
1971
1972 /* Copy len byte from adapter memory to system data area. */
1973 i = 0;
1974 for(;;)
1975 {
1976 InWord = SIFREADW(SIFINC);
1977
1978 *(Data + i) = HIBYTE(InWord); /* Write first byte */
1979 if(++i == Length) /* All is done break */
1980 break;
1981
1982 *(Data + i) = LOBYTE(InWord); /* Write second byte */
1983 if (++i == Length) /* All is done break */
1984 break;
1985 }
1986
1987 /* Restore original values */
1988 SIFWRITEW(old_sifadx, SIFADX);
1989 SIFWRITEW(old_sifadr, SIFADR);
1990
1991 return;
1992 }
1993
1994 /*
1995 * Cancel all queued packets in the transmission queue.
1996 */
1997 static void tms380tr_cancel_tx_queue(struct net_local* tp)
1998 {
1999 TPL *tpl;
2000
2001 /*
2002 * NOTE: There must not be an active TRANSMIT command pending, when
2003 * this function is called.
2004 */
2005 if(tp->TransmitCommandActive)
2006 return;
2007
2008 for(;;)
2009 {
2010 tpl = tp->TplBusy;
2011 if(!tpl->BusyFlag)
2012 break;
2013 /* "Remove" TPL from busy list. */
2014 tp->TplBusy = tpl->NextTPLPtr;
2015 tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
2016 tpl->BusyFlag = 0; /* "free" TPL */
2017
2018 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2019 if (tpl->DMABuff)
2020 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2021 dev_kfree_skb_any(tpl->Skb);
2022 }
2023
2024 return;
2025 }
2026
2027 /*
2028 * This function is called whenever a transmit interrupt is generated by the
2029 * adapter. For a command complete interrupt, it is checked if we have to
2030 * issue a new transmit command or not.
2031 */
2032 static void tms380tr_tx_status_irq(struct net_device *dev)
2033 {
2034 struct net_local *tp = netdev_priv(dev);
2035 unsigned char HighByte, HighAc, LowAc;
2036 TPL *tpl;
2037
2038 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2039 * available, because the CLEAR SSB command has already been issued.
2040 *
2041 * Process all complete transmissions.
2042 */
2043
2044 for(;;)
2045 {
2046 tpl = tp->TplBusy;
2047 if(!tpl->BusyFlag || (tpl->Status
2048 & (TX_VALID | TX_FRAME_COMPLETE))
2049 != TX_FRAME_COMPLETE)
2050 {
2051 break;
2052 }
2053
2054 /* "Remove" TPL from busy list. */
2055 tp->TplBusy = tpl->NextTPLPtr ;
2056
2057 /* Check the transmit status field only for directed frames*/
2058 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2059 {
2060 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2061 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2062 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2063
2064 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2065 {
2066 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2067 dev->name,
2068 *(unsigned long *)&tpl->MData[2+2]);
2069 }
2070 else
2071 {
2072 if(tms380tr_debug > 3)
2073 printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2074 dev->name);
2075 }
2076 }
2077 else
2078 {
2079 if(!DIRECTED_FRAME(tpl))
2080 {
2081 if(tms380tr_debug > 3)
2082 printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2083 dev->name);
2084 }
2085 }
2086
2087 tp->MacStat.tx_packets++;
2088 if (tpl->DMABuff)
2089 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2090 dev_kfree_skb_irq(tpl->Skb);
2091 tpl->BusyFlag = 0; /* "free" TPL */
2092 }
2093
2094 if(!tp->TplFree->NextTPLPtr->BusyFlag)
2095 netif_wake_queue(dev);
2096 return;
2097 }
2098
2099 /*
2100 * Called if a frame receive interrupt is generated by the adapter.
2101 * Check if the frame is valid and indicate it to system.
2102 */
2103 static void tms380tr_rcv_status_irq(struct net_device *dev)
2104 {
2105 struct net_local *tp = netdev_priv(dev);
2106 unsigned char *ReceiveDataPtr;
2107 struct sk_buff *skb;
2108 unsigned int Length, Length2;
2109 RPL *rpl;
2110 RPL *SaveHead;
2111 dma_addr_t dmabuf;
2112
2113 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2114 * available, because the CLEAR SSB command has already been issued.
2115 *
2116 * Process all complete receives.
2117 */
2118
2119 for(;;)
2120 {
2121 rpl = tp->RplHead;
2122 if(rpl->Status & RX_VALID)
2123 break; /* RPL still in use by adapter */
2124
2125 /* Forward RPLHead pointer to next list. */
2126 SaveHead = tp->RplHead;
2127 tp->RplHead = rpl->NextRPLPtr;
2128
2129 /* Get the frame size (Byte swap for Intel).
2130 * Do this early (see workaround comment below)
2131 */
2132 Length = be16_to_cpu((unsigned short)rpl->FrameSize);
2133
2134 /* Check if the Frame_Start, Frame_End and
2135 * Frame_Complete bits are set.
2136 */
2137 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2138 == VALID_SINGLE_BUFFER_FRAME)
2139 {
2140 ReceiveDataPtr = rpl->MData;
2141
2142 /* Workaround for delayed write of FrameSize on ISA
2143 * (FrameSize is false but valid-bit is reset)
2144 * Frame size is set to zero when the RPL is freed.
2145 * Length2 is there because there have also been
2146 * cases where the FrameSize was partially written
2147 */
2148 Length2 = be16_to_cpu((unsigned short)rpl->FrameSize);
2149
2150 if(Length == 0 || Length != Length2)
2151 {
2152 tp->RplHead = SaveHead;
2153 break; /* Return to tms380tr_interrupt */
2154 }
2155 tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2156
2157 if(tms380tr_debug > 3)
2158 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2159 dev->name, Length, Length);
2160
2161 /* Indicate the received frame to system the
2162 * adapter does the Source-Routing padding for
2163 * us. See: OpenOptions in tms380tr_init_opb()
2164 */
2165 skb = rpl->Skb;
2166 if(rpl->SkbStat == SKB_UNAVAILABLE)
2167 {
2168 /* Try again to allocate skb */
2169 skb = dev_alloc_skb(tp->MaxPacketSize);
2170 if(skb == NULL)
2171 {
2172 /* Update Stats ?? */
2173 }
2174 else
2175 {
2176 skb->dev = dev;
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 memcpy(skb->data, ReceiveDataPtr, Length);
2188
2189 /* Deliver frame to system */
2190 rpl->Skb = NULL;
2191 skb_trim(skb,Length);
2192 skb->protocol = tr_type_trans(skb,dev);
2193 netif_rx(skb);
2194 dev->last_rx = jiffies;
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 undesireable 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 int tmsdev_init(struct net_device *dev, struct device *pdev)
2336 {
2337 struct net_local *tms_local;
2338
2339 memset(dev->priv, 0, sizeof(struct net_local));
2340 tms_local = netdev_priv(dev);
2341 init_waitqueue_head(&tms_local->wait_for_tok_int);
2342 if (pdev->dma_mask)
2343 tms_local->dmalimit = *pdev->dma_mask;
2344 else
2345 return -ENOMEM;
2346 tms_local->pdev = pdev;
2347 tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2348 sizeof(struct net_local), DMA_BIDIRECTIONAL);
2349 if (tms_local->dmabuffer + sizeof(struct net_local) >
2350 tms_local->dmalimit)
2351 {
2352 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2353 dev->name);
2354 tmsdev_term(dev);
2355 return -ENOMEM;
2356 }
2357
2358 /* These can be overridden by the card driver if needed */
2359 dev->open = tms380tr_open;
2360 dev->stop = tms380tr_close;
2361 dev->do_ioctl = NULL;
2362 dev->hard_start_xmit = tms380tr_send_packet;
2363 dev->tx_timeout = tms380tr_timeout;
2364 dev->watchdog_timeo = HZ;
2365 dev->get_stats = tms380tr_get_stats;
2366 dev->set_multicast_list = &tms380tr_set_multicast_list;
2367 dev->set_mac_address = tms380tr_set_mac_address;
2368
2369 return 0;
2370 }
2371
2372 EXPORT_SYMBOL(tms380tr_open);
2373 EXPORT_SYMBOL(tms380tr_close);
2374 EXPORT_SYMBOL(tms380tr_interrupt);
2375 EXPORT_SYMBOL(tmsdev_init);
2376 EXPORT_SYMBOL(tmsdev_term);
2377 EXPORT_SYMBOL(tms380tr_wait);
2378
2379 #ifdef MODULE
2380
2381 static struct module *TMS380_module = NULL;
2382
2383 int init_module(void)
2384 {
2385 printk(KERN_DEBUG "%s", version);
2386
2387 TMS380_module = &__this_module;
2388 return 0;
2389 }
2390
2391 void cleanup_module(void)
2392 {
2393 TMS380_module = NULL;
2394 }
2395 #endif
2396
2397 MODULE_LICENSE("GPL");
2398
kernel source for telekom puls (alcatel/mediatek)