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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / tokenring / tms380tr.c
blobdf43b449e42924870cfbf97605b3ab72aa1ae900
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 *
66 * To do:
67 * 1. Multi/Broadcast packet handling (this may have fixed itself)
68 * 2. Write a sktrisa module that includes the old ISA support (done)
69 * 3. Allow modules to load their own microcode
70 * 4. Speed up the BUD process -- freezing the kernel for 3+sec is
71 * quite unacceptable.
72 * 5. Still a few remaining stalls when the cable is unplugged.
73 */
74
75 #ifdef MODULE
76 static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
77 #endif
78
79 #include <linux/module.h>
80 #include <linux/kernel.h>
81 #include <linux/types.h>
82 #include <linux/fcntl.h>
83 #include <linux/interrupt.h>
84 #include <linux/ptrace.h>
85 #include <linux/ioport.h>
86 #include <linux/in.h>
87 #include <linux/slab.h>
88 #include <linux/string.h>
89 #include <linux/time.h>
90 #include <linux/errno.h>
91 #include <linux/init.h>
92 #include <linux/pci.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 static struct device tms_device;
118
119 /* Index to functions, as function prototypes.
120 * Alphabetical by function name.
121 */
122
123 /* "A" */
124 /* "B" */
125 static int tms380tr_bringup_diags(struct net_device *dev);
126 /* "C" */
127 static void tms380tr_cancel_tx_queue(struct net_local* tp);
128 static int tms380tr_chipset_init(struct net_device *dev);
129 static void tms380tr_chk_irq(struct net_device *dev);
130 static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
131 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
132 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
133 int tms380tr_close(struct net_device *dev);
134 static void tms380tr_cmd_status_irq(struct net_device *dev);
135 /* "D" */
136 static void tms380tr_disable_interrupts(struct net_device *dev);
137 #if TMS380TR_DEBUG > 0
138 static void tms380tr_dump(unsigned char *Data, int length);
139 #endif
140 /* "E" */
141 static void tms380tr_enable_interrupts(struct net_device *dev);
142 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
143 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
144 /* "F" */
145 /* "G" */
146 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
147 /* "H" */
148 static int tms380tr_hardware_send_packet(struct sk_buff *skb,
149 struct net_device *dev);
150 /* "I" */
151 static int tms380tr_init_adapter(struct net_device *dev);
152 static void tms380tr_init_ipb(struct net_local *tp);
153 static void tms380tr_init_net_local(struct net_device *dev);
154 static void tms380tr_init_opb(struct net_device *dev);
155 /* "M" */
156 /* "O" */
157 int tms380tr_open(struct net_device *dev);
158 static void tms380tr_open_adapter(struct net_device *dev);
159 /* "P" */
160 /* "R" */
161 static void tms380tr_rcv_status_irq(struct net_device *dev);
162 static int tms380tr_read_ptr(struct net_device *dev);
163 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
164 unsigned short Address, int Length);
165 static int tms380tr_reset_adapter(struct net_device *dev);
166 static void tms380tr_reset_interrupt(struct net_device *dev);
167 static void tms380tr_ring_status_irq(struct net_device *dev);
168 /* "S" */
169 static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev);
170 static void tms380tr_set_multicast_list(struct net_device *dev);
171 static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
172 /* "T" */
173 static void tms380tr_timer_chk(unsigned long data);
174 static void tms380tr_timer_end_wait(unsigned long data);
175 static void tms380tr_tx_status_irq(struct net_device *dev);
176 /* "U" */
177 static void tms380tr_update_rcv_stats(struct net_local *tp,
178 unsigned char DataPtr[], unsigned int Length);
179 /* "W" */
180 void tms380tr_wait(unsigned long time);
181 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
182 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
183
184 #define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg))
185 #define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg))
186 #define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg))
187 #define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg))
188
189
190
191 #if 0 /* TMS380TR_DEBUG > 0 */
192 static int madgemc_sifprobe(struct net_device *dev)
193 {
194 unsigned char old, chk1, chk2;
195
196 old = SIFREADB(SIFADR); /* Get the old SIFADR value */
197
198 chk1 = 0; /* Begin with check value 0 */
199 do {
200 madgemc_setregpage(dev, 0);
201 /* Write new SIFADR value */
202 SIFWRITEB(chk1, SIFADR);
203 chk2 = SIFREADB(SIFADR);
204 if (chk2 != chk1)
205 return -1;
206
207 madgemc_setregpage(dev, 1);
208 /* Read, invert and write */
209 chk2 = SIFREADB(SIFADD);
210 if (chk2 != chk1)
211 return -1;
212
213 madgemc_setregpage(dev, 0);
214 chk2 ^= 0x0FE;
215 SIFWRITEB(chk2, SIFADR);
216
217 /* Read, invert and compare */
218 madgemc_setregpage(dev, 1);
219 chk2 = SIFREADB(SIFADD);
220 madgemc_setregpage(dev, 0);
221 chk2 ^= 0x0FE;
222
223 if(chk1 != chk2)
224 return (-1); /* No adapter */
225 chk1 -= 2;
226 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
227
228 madgemc_setregpage(dev, 0); /* sanity */
229 /* Restore the SIFADR value */
230 SIFWRITEB(old, SIFADR);
231
232 return (0);
233 }
234 #endif
235
236 /*
237 * Open/initialize the board. This is called sometime after
238 * booting when the 'ifconfig' program is run.
239 *
240 * This routine should set everything up anew at each open, even
241 * registers that "should" only need to be set once at boot, so that
242 * there is non-reboot way to recover if something goes wrong.
243 */
244 int tms380tr_open(struct net_device *dev)
245 {
246 struct net_local *tp = netdev_priv(dev);
247 int err;
248
249 /* init the spinlock */
250 spin_lock_init(&tp->lock);
251 init_timer(&tp->timer);
252
253 /* Reset the hardware here. Don't forget to set the station address. */
254
255 #ifdef CONFIG_ISA
256 if(dev->dma > 0)
257 {
258 unsigned long flags=claim_dma_lock();
259 disable_dma(dev->dma);
260 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
261 enable_dma(dev->dma);
262 release_dma_lock(flags);
263 }
264 #endif
265
266 err = tms380tr_chipset_init(dev);
267 if(err)
268 {
269 printk(KERN_INFO "%s: Chipset initialization error\n",
270 dev->name);
271 return (-1);
272 }
273
274 tp->timer.expires = jiffies + 30*HZ;
275 tp->timer.function = tms380tr_timer_end_wait;
276 tp->timer.data = (unsigned long)dev;
277 add_timer(&tp->timer);
278
279 printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
280 dev->name, tms380tr_read_ptr(dev));
281
282 tms380tr_enable_interrupts(dev);
283 tms380tr_open_adapter(dev);
284
285 netif_start_queue(dev);
286
287 /* Wait for interrupt from hardware. If interrupt does not come,
288 * there will be a timeout from the timer.
289 */
290 tp->Sleeping = 1;
291 interruptible_sleep_on(&tp->wait_for_tok_int);
292 del_timer(&tp->timer);
293
294 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
295 if(tp->AdapterVirtOpenFlag == 0)
296 {
297 tms380tr_disable_interrupts(dev);
298 return (-1);
299 }
300
301 tp->StartTime = jiffies;
302
303 /* Start function control timer */
304 tp->timer.expires = jiffies + 2*HZ;
305 tp->timer.function = tms380tr_timer_chk;
306 tp->timer.data = (unsigned long)dev;
307 add_timer(&tp->timer);
308
309 return (0);
310 }
311
312 /*
313 * Timeout function while waiting for event
314 */
315 static void tms380tr_timer_end_wait(unsigned long data)
316 {
317 struct net_device *dev = (struct net_device*)data;
318 struct net_local *tp = netdev_priv(dev);
319
320 if(tp->Sleeping)
321 {
322 tp->Sleeping = 0;
323 wake_up_interruptible(&tp->wait_for_tok_int);
324 }
325
326 return;
327 }
328
329 /*
330 * Initialize the chipset
331 */
332 static int tms380tr_chipset_init(struct net_device *dev)
333 {
334 struct net_local *tp = netdev_priv(dev);
335 int err;
336
337 tms380tr_init_ipb(tp);
338 tms380tr_init_opb(dev);
339 tms380tr_init_net_local(dev);
340
341 if(tms380tr_debug > 3)
342 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
343 err = tms380tr_reset_adapter(dev);
344 if(err < 0)
345 return (-1);
346
347 if(tms380tr_debug > 3)
348 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
349 err = tms380tr_bringup_diags(dev);
350 if(err < 0)
351 return (-1);
352
353 if(tms380tr_debug > 3)
354 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
355 err = tms380tr_init_adapter(dev);
356 if(err < 0)
357 return (-1);
358
359 if(tms380tr_debug > 3)
360 printk(KERN_DEBUG "%s: Done!\n", dev->name);
361 return (0);
362 }
363
364 /*
365 * Initializes the net_local structure.
366 */
367 static void tms380tr_init_net_local(struct net_device *dev)
368 {
369 struct net_local *tp = netdev_priv(dev);
370 int i;
371 dma_addr_t dmabuf;
372
373 tp->scb.CMD = 0;
374 tp->scb.Parm[0] = 0;
375 tp->scb.Parm[1] = 0;
376
377 tp->ssb.STS = 0;
378 tp->ssb.Parm[0] = 0;
379 tp->ssb.Parm[1] = 0;
380 tp->ssb.Parm[2] = 0;
381
382 tp->CMDqueue = 0;
383
384 tp->AdapterOpenFlag = 0;
385 tp->AdapterVirtOpenFlag = 0;
386 tp->ScbInUse = 0;
387 tp->OpenCommandIssued = 0;
388 tp->ReOpenInProgress = 0;
389 tp->HaltInProgress = 0;
390 tp->TransmitHaltScheduled = 0;
391 tp->LobeWireFaultLogged = 0;
392 tp->LastOpenStatus = 0;
393 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
394
395 /* Create circular chain of transmit lists */
396 for (i = 0; i < TPL_NUM; i++)
397 {
398 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
399 tp->Tpl[i].Status = 0;
400 tp->Tpl[i].FrameSize = 0;
401 tp->Tpl[i].FragList[0].DataCount = 0;
402 tp->Tpl[i].FragList[0].DataAddr = 0;
403 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
404 tp->Tpl[i].MData = NULL;
405 tp->Tpl[i].TPLIndex = i;
406 tp->Tpl[i].DMABuff = 0;
407 tp->Tpl[i].BusyFlag = 0;
408 }
409
410 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
411
412 /* Create circular chain of receive lists */
413 for (i = 0; i < RPL_NUM; i++)
414 {
415 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
416 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
417 tp->Rpl[i].FrameSize = 0;
418 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
419
420 /* Alloc skb and point adapter to data area */
421 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
422 tp->Rpl[i].DMABuff = 0;
423
424 /* skb == NULL ? then use local buffer */
425 if(tp->Rpl[i].Skb == NULL)
426 {
427 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
428 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
429 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
430 }
431 else /* SKB != NULL */
432 {
433 tp->Rpl[i].Skb->dev = dev;
434 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
435
436 /* data unreachable for DMA ? then use local buffer */
437 dmabuf = pci_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE);
438 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
439 {
440 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
441 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
442 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
443 }
444 else /* DMA directly in skb->data */
445 {
446 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
447 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
448 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
449 tp->Rpl[i].DMABuff = dmabuf;
450 }
451 }
452
453 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
454 tp->Rpl[i].RPLIndex = i;
455 }
456
457 tp->RplHead = &tp->Rpl[0];
458 tp->RplTail = &tp->Rpl[RPL_NUM-1];
459 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
460
461 return;
462 }
463
464 /*
465 * Initializes the initialisation parameter block.
466 */
467 static void tms380tr_init_ipb(struct net_local *tp)
468 {
469 tp->ipb.Init_Options = BURST_MODE;
470 tp->ipb.CMD_Status_IV = 0;
471 tp->ipb.TX_IV = 0;
472 tp->ipb.RX_IV = 0;
473 tp->ipb.Ring_Status_IV = 0;
474 tp->ipb.SCB_Clear_IV = 0;
475 tp->ipb.Adapter_CHK_IV = 0;
476 tp->ipb.RX_Burst_Size = BURST_SIZE;
477 tp->ipb.TX_Burst_Size = BURST_SIZE;
478 tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
479 tp->ipb.SCB_Addr = 0;
480 tp->ipb.SSB_Addr = 0;
481
482 return;
483 }
484
485 /*
486 * Initializes the open parameter block.
487 */
488 static void tms380tr_init_opb(struct net_device *dev)
489 {
490 struct net_local *tp;
491 unsigned long Addr;
492 unsigned short RplSize = RPL_SIZE;
493 unsigned short TplSize = TPL_SIZE;
494 unsigned short BufferSize = BUFFER_SIZE;
495 int i;
496
497 tp = netdev_priv(dev);
498
499 tp->ocpl.OPENOptions = 0;
500 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
501 tp->ocpl.FullDuplex = 0;
502 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
503
504 /*
505 * Set node address
506 *
507 * We go ahead and put it in the OPB even though on
508 * most of the generic adapters this isn't required.
509 * Its simpler this way. -- ASF
510 */
511 for (i=0;i<6;i++)
512 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
513
514 tp->ocpl.GroupAddr = 0;
515 tp->ocpl.FunctAddr = 0;
516 tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
517 tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
518 tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
519 tp->ocpl.Reserved = 0;
520 tp->ocpl.TXBufMin = TX_BUF_MIN;
521 tp->ocpl.TXBufMax = TX_BUF_MAX;
522
523 Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
524
525 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
526 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
527
528 return;
529 }
530
531 /*
532 * Send OPEN command to adapter
533 */
534 static void tms380tr_open_adapter(struct net_device *dev)
535 {
536 struct net_local *tp = netdev_priv(dev);
537
538 if(tp->OpenCommandIssued)
539 return;
540
541 tp->OpenCommandIssued = 1;
542 tms380tr_exec_cmd(dev, OC_OPEN);
543
544 return;
545 }
546
547 /*
548 * Clear the adapter's interrupt flag. Clear system interrupt enable
549 * (SINTEN): disable adapter to system interrupts.
550 */
551 static void tms380tr_disable_interrupts(struct net_device *dev)
552 {
553 SIFWRITEB(0, SIFACL);
554
555 return;
556 }
557
558 /*
559 * Set the adapter's interrupt flag. Set system interrupt enable
560 * (SINTEN): enable adapter to system interrupts.
561 */
562 static void tms380tr_enable_interrupts(struct net_device *dev)
563 {
564 SIFWRITEB(ACL_SINTEN, SIFACL);
565
566 return;
567 }
568
569 /*
570 * Put command in command queue, try to execute it.
571 */
572 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
573 {
574 struct net_local *tp = netdev_priv(dev);
575
576 tp->CMDqueue |= Command;
577 tms380tr_chk_outstanding_cmds(dev);
578
579 return;
580 }
581
582 static void tms380tr_timeout(struct net_device *dev)
583 {
584 /*
585 * If we get here, some higher level has decided we are broken.
586 * There should really be a "kick me" function call instead.
587 *
588 * Resetting the token ring adapter takes a long time so just
589 * fake transmission time and go on trying. Our own timeout
590 * routine is in tms380tr_timer_chk()
591 */
592 dev->trans_start = jiffies;
593 netif_wake_queue(dev);
594 }
595
596 /*
597 * Gets skb from system, queues it and checks if it can be sent
598 */
599 static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev)
600 {
601 struct net_local *tp = netdev_priv(dev);
602 int err;
603
604 err = tms380tr_hardware_send_packet(skb, dev);
605 if(tp->TplFree->NextTPLPtr->BusyFlag)
606 netif_stop_queue(dev);
607 return (err);
608 }
609
610 /*
611 * Move frames into adapter tx queue
612 */
613 static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev)
614 {
615 TPL *tpl;
616 short length;
617 unsigned char *buf;
618 unsigned long flags;
619 int i;
620 dma_addr_t dmabuf, newbuf;
621 struct net_local *tp = netdev_priv(dev);
622
623 /* Try to get a free TPL from the chain.
624 *
625 * NOTE: We *must* always leave one unused TPL in the chain,
626 * because otherwise the adapter might send frames twice.
627 */
628 spin_lock_irqsave(&tp->lock, flags);
629 if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
630 if (tms380tr_debug > 0)
631 printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
632 spin_unlock_irqrestore(&tp->lock, flags);
633 return 1;
634 }
635
636 dmabuf = 0;
637
638 /* Is buffer reachable for Busmaster-DMA? */
639
640 length = skb->len;
641 dmabuf = pci_map_single(tp->pdev, skb->data, length, PCI_DMA_TODEVICE);
642 if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
643 /* Copy frame to local buffer */
644 pci_unmap_single(tp->pdev, dmabuf, length, PCI_DMA_TODEVICE);
645 dmabuf = 0;
646 i = tp->TplFree->TPLIndex;
647 buf = tp->LocalTxBuffers[i];
648 memcpy(buf, skb->data, length);
649 newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
650 }
651 else {
652 /* Send direct from skb->data */
653 newbuf = dmabuf;
654 buf = skb->data;
655 }
656 /* Source address in packet? */
657 tms380tr_chk_src_addr(buf, dev->dev_addr);
658 tp->LastSendTime = jiffies;
659 tpl = tp->TplFree; /* Get the "free" TPL */
660 tpl->BusyFlag = 1; /* Mark TPL as busy */
661 tp->TplFree = tpl->NextTPLPtr;
662
663 /* Save the skb for delayed return of skb to system */
664 tpl->Skb = skb;
665 tpl->DMABuff = dmabuf;
666 tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
667 tpl->FragList[0].DataAddr = htonl(newbuf);
668
669 /* Write the data length in the transmit list. */
670 tpl->FrameSize = cpu_to_be16((unsigned short)length);
671 tpl->MData = buf;
672
673 /* Transmit the frame and set the status values. */
674 tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
675 | TX_END_FRAME | TX_PASS_SRC_ADDR
676 | TX_FRAME_IRQ);
677
678 /* Let adapter send the frame. */
679 tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
680 spin_unlock_irqrestore(&tp->lock, flags);
681
682 return 0;
683 }
684
685 /*
686 * Write the given value to the 'Status' field of the specified TPL.
687 * NOTE: This function should be used whenever the status of any TPL must be
688 * modified by the driver, because the compiler may otherwise change the
689 * order of instructions such that writing the TPL status may be executed at
690 * an undesireable time. When this function is used, the status is always
691 * written when the function is called.
692 */
693 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
694 {
695 tpl->Status = Status;
696 }
697
698 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
699 {
700 unsigned char SRBit;
701
702 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
703 return;
704 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
705 return;
706
707 SRBit = frame[8] & 0x80;
708 memcpy(&frame[8], hw_addr, 6);
709 frame[8] |= SRBit;
710
711 return;
712 }
713
714 /*
715 * The timer routine: Check if adapter still open and working, reopen if not.
716 */
717 static void tms380tr_timer_chk(unsigned long data)
718 {
719 struct net_device *dev = (struct net_device*)data;
720 struct net_local *tp = netdev_priv(dev);
721
722 if(tp->HaltInProgress)
723 return;
724
725 tms380tr_chk_outstanding_cmds(dev);
726 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
727 && (tp->TplFree != tp->TplBusy))
728 {
729 /* Anything to send, but stalled too long */
730 tp->LastSendTime = jiffies;
731 tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
732 }
733
734 tp->timer.expires = jiffies + 2*HZ;
735 add_timer(&tp->timer);
736
737 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
738 return;
739 tp->ReOpenInProgress = 1;
740 tms380tr_open_adapter(dev);
741
742 return;
743 }
744
745 /*
746 * The typical workload of the driver: Handle the network interface interrupts.
747 */
748 irqreturn_t tms380tr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
749 {
750 struct net_device *dev = dev_id;
751 struct net_local *tp;
752 unsigned short irq_type;
753 int handled = 0;
754
755 if(dev == NULL) {
756 printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
757 return IRQ_NONE;
758 }
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 int i;
1215 struct dev_mc_list *mclist = dev->mc_list;
1216 for (i=0; i< dev->mc_count; i++)
1217 {
1218 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1219 mclist->dmi_addr[2];
1220 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1221 mclist->dmi_addr[3];
1222 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1223 mclist->dmi_addr[4];
1224 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1225 mclist->dmi_addr[5];
1226 mclist = mclist->next;
1227 }
1228 }
1229 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1230 }
1231
1232 tp->ocpl.OPENOptions = OpenOptions;
1233 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1234 return;
1235 }
1236
1237 /*
1238 * Wait for some time (microseconds)
1239 */
1240 void tms380tr_wait(unsigned long time)
1241 {
1242 #if 0
1243 long tmp;
1244
1245 tmp = jiffies + time/(1000000/HZ);
1246 do {
1247 current->state = TASK_INTERRUPTIBLE;
1248 tmp = schedule_timeout(tmp);
1249 } while(time_after(tmp, jiffies));
1250 #else
1251 udelay(time);
1252 #endif
1253 return;
1254 }
1255
1256 /*
1257 * Write a command value to the SIFCMD register
1258 */
1259 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1260 {
1261 unsigned short cmd;
1262 unsigned short SifStsValue;
1263 unsigned long loop_counter;
1264
1265 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1266 cmd = (unsigned short)WriteValue;
1267 loop_counter = 0,5 * 800000;
1268 do {
1269 SifStsValue = SIFREADW(SIFSTS);
1270 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1271 SIFWRITEW(cmd, SIFCMD);
1272
1273 return;
1274 }
1275
1276 /*
1277 * Processes adapter hardware reset, halts adapter and downloads firmware,
1278 * clears the halt bit.
1279 */
1280 static int tms380tr_reset_adapter(struct net_device *dev)
1281 {
1282 struct net_local *tp = netdev_priv(dev);
1283 unsigned short *fw_ptr;
1284 unsigned short count, c, count2;
1285 const struct firmware *fw_entry = NULL;
1286
1287 strncpy(tms_device.bus_id,dev->name, BUS_ID_SIZE);
1288
1289 if (request_firmware(&fw_entry, "tms380tr.bin", &tms_device) != 0) {
1290 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1291 dev->name, "tms380tr.bin");
1292 return (-1);
1293 }
1294
1295 fw_ptr = (unsigned short *)fw_entry->data;
1296 count2 = fw_entry->size / 2;
1297
1298 /* Hardware adapter reset */
1299 SIFWRITEW(ACL_ARESET, SIFACL);
1300 tms380tr_wait(40);
1301
1302 c = SIFREADW(SIFACL);
1303 tms380tr_wait(20);
1304
1305 if(dev->dma == 0) /* For PCI adapters */
1306 {
1307 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1308 if(tp->setnselout)
1309 c |= (*tp->setnselout)(dev);
1310 }
1311
1312 /* In case a command is pending - forget it */
1313 tp->ScbInUse = 0;
1314
1315 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1316 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1317 c |= ACL_BOOT;
1318 c |= ACL_SINTEN;
1319 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1320 SIFWRITEW(c, SIFACL);
1321 tms380tr_wait(40);
1322
1323 count = 0;
1324 /* Download firmware via DIO interface: */
1325 do {
1326 if (count2 < 3) continue;
1327
1328 /* Download first address part */
1329 SIFWRITEW(*fw_ptr, SIFADX);
1330 fw_ptr++;
1331 count2--;
1332 /* Download second address part */
1333 SIFWRITEW(*fw_ptr, SIFADD);
1334 fw_ptr++;
1335 count2--;
1336
1337 if((count = *fw_ptr) != 0) /* Load loop counter */
1338 {
1339 fw_ptr++; /* Download block data */
1340 count2--;
1341 if (count > count2) continue;
1342
1343 for(; count > 0; count--)
1344 {
1345 SIFWRITEW(*fw_ptr, SIFINC);
1346 fw_ptr++;
1347 count2--;
1348 }
1349 }
1350 else /* Stop, if last block downloaded */
1351 {
1352 c = SIFREADW(SIFACL);
1353 c &= (~ACL_CPHALT | ACL_SINTEN);
1354
1355 /* Clear CPHALT and start BUD */
1356 SIFWRITEW(c, SIFACL);
1357 if (fw_entry)
1358 release_firmware(fw_entry);
1359 return (1);
1360 }
1361 } while(count == 0);
1362
1363 if (fw_entry)
1364 release_firmware(fw_entry);
1365 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1366 return (-1);
1367 }
1368
1369 /*
1370 * Starts bring up diagnostics of token ring adapter and evaluates
1371 * diagnostic results.
1372 */
1373 static int tms380tr_bringup_diags(struct net_device *dev)
1374 {
1375 int loop_cnt, retry_cnt;
1376 unsigned short Status;
1377
1378 tms380tr_wait(HALF_SECOND);
1379 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1380 tms380tr_wait(HALF_SECOND);
1381
1382 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1383
1384 do {
1385 retry_cnt--;
1386 if(tms380tr_debug > 3)
1387 printk(KERN_DEBUG "BUD-Status: ");
1388 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1389 do { /* Inspect BUD results */
1390 loop_cnt--;
1391 tms380tr_wait(HALF_SECOND);
1392 Status = SIFREADW(SIFSTS);
1393 Status &= STS_MASK;
1394
1395 if(tms380tr_debug > 3)
1396 printk(KERN_DEBUG " %04X \n", Status);
1397 /* BUD successfully completed */
1398 if(Status == STS_INITIALIZE)
1399 return (1);
1400 /* Unrecoverable hardware error, BUD not completed? */
1401 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1402 != (STS_ERROR | STS_TEST)));
1403
1404 /* Error preventing completion of BUD */
1405 if(retry_cnt > 0)
1406 {
1407 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1408 dev->name);
1409 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1410 tms380tr_wait(HALF_SECOND);
1411 }
1412 } while(retry_cnt > 0);
1413
1414 Status = SIFREADW(SIFSTS);
1415
1416 printk(KERN_INFO "%s: Hardware error\n", dev->name);
1417 /* Hardware error occurred! */
1418 Status &= 0x001f;
1419 if (Status & 0x0010)
1420 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1421 else if ((Status & 0x000f) > 6)
1422 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1423 else
1424 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1425
1426 return (-1);
1427 }
1428
1429 /*
1430 * Copy initialisation data to adapter memory, beginning at address
1431 * 1:0A00; Starting DMA test and evaluating result bits.
1432 */
1433 static int tms380tr_init_adapter(struct net_device *dev)
1434 {
1435 struct net_local *tp = netdev_priv(dev);
1436
1437 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1438 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1439 0xC5, 0xD9, 0xC3, 0xD4};
1440 void *ptr = (void *)&tp->ipb;
1441 unsigned short *ipb_ptr = (unsigned short *)ptr;
1442 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1443 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1444 unsigned short Status;
1445 int i, loop_cnt, retry_cnt;
1446
1447 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1448 tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1449 tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1450
1451 if(tms380tr_debug > 3)
1452 {
1453 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1454 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1455 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1456 printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
1457 }
1458 /* Maximum: three initialization retries */
1459 retry_cnt = INIT_MAX_RETRIES;
1460
1461 do {
1462 retry_cnt--;
1463
1464 /* Transfer initialization block */
1465 SIFWRITEW(0x0001, SIFADX);
1466
1467 /* To address 0001:0A00 of adapter RAM */
1468 SIFWRITEW(0x0A00, SIFADD);
1469
1470 /* Write 11 words to adapter RAM */
1471 for(i = 0; i < 11; i++)
1472 SIFWRITEW(ipb_ptr[i], SIFINC);
1473
1474 /* Execute SCB adapter command */
1475 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1476
1477 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1478
1479 /* While remaining retries, no error and not completed */
1480 do {
1481 Status = 0;
1482 loop_cnt--;
1483 tms380tr_wait(HALF_SECOND);
1484
1485 /* Mask interesting status bits */
1486 Status = SIFREADW(SIFSTS);
1487 Status &= STS_MASK;
1488 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
1489 && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1490
1491 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1492 {
1493 /* Initialization completed without error */
1494 i = 0;
1495 do { /* Test if contents of SCB is valid */
1496 if(SCB_Test[i] != *(cb_ptr + i))
1497 {
1498 printk(KERN_INFO "%s: DMA failed\n", dev->name);
1499 /* DMA data error: wrong data in SCB */
1500 return (-1);
1501 }
1502 i++;
1503 } while(i < 6);
1504
1505 i = 0;
1506 do { /* Test if contents of SSB is valid */
1507 if(SSB_Test[i] != *(sb_ptr + i))
1508 /* DMA data error: wrong data in SSB */
1509 return (-1);
1510 i++;
1511 } while (i < 8);
1512
1513 return (1); /* Adapter successfully initialized */
1514 }
1515 else
1516 {
1517 if((Status & STS_ERROR) != 0)
1518 {
1519 /* Initialization error occurred */
1520 Status = SIFREADW(SIFSTS);
1521 Status &= STS_ERROR_MASK;
1522 /* ShowInitialisationErrorCode(Status); */
1523 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1524 return (-1); /* Unrecoverable error */
1525 }
1526 else
1527 {
1528 if(retry_cnt > 0)
1529 {
1530 /* Reset adapter and try init again */
1531 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1532 tms380tr_wait(HALF_SECOND);
1533 }
1534 }
1535 }
1536 } while(retry_cnt > 0);
1537
1538 printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1539 return (-1);
1540 }
1541
1542 /*
1543 * Check for outstanding commands in command queue and tries to execute
1544 * command immediately. Corresponding command flag in command queue is cleared.
1545 */
1546 static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1547 {
1548 struct net_local *tp = netdev_priv(dev);
1549 unsigned long Addr = 0;
1550
1551 if(tp->CMDqueue == 0)
1552 return; /* No command execution */
1553
1554 /* If SCB in use: no command */
1555 if(tp->ScbInUse == 1)
1556 return;
1557
1558 /* Check if adapter is opened, avoiding COMMAND_REJECT
1559 * interrupt by the adapter!
1560 */
1561 if(tp->AdapterOpenFlag == 0)
1562 {
1563 if(tp->CMDqueue & OC_OPEN)
1564 {
1565 /* Execute OPEN command */
1566 tp->CMDqueue ^= OC_OPEN;
1567
1568 Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1569 tp->scb.Parm[0] = LOWORD(Addr);
1570 tp->scb.Parm[1] = HIWORD(Addr);
1571 tp->scb.CMD = OPEN;
1572 }
1573 else
1574 /* No OPEN command queued, but adapter closed. Note:
1575 * We'll try to re-open the adapter in DriverPoll()
1576 */
1577 return; /* No adapter command issued */
1578 }
1579 else
1580 {
1581 /* Adapter is open; evaluate command queue: try to execute
1582 * outstanding commands (depending on priority!) CLOSE
1583 * command queued
1584 */
1585 if(tp->CMDqueue & OC_CLOSE)
1586 {
1587 tp->CMDqueue ^= OC_CLOSE;
1588 tp->AdapterOpenFlag = 0;
1589 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1590 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1591 tp->scb.CMD = CLOSE;
1592 if(!tp->HaltInProgress)
1593 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1594 else
1595 tp->CMDqueue = 0; /* no more commands */
1596 }
1597 else
1598 {
1599 if(tp->CMDqueue & OC_RECEIVE)
1600 {
1601 tp->CMDqueue ^= OC_RECEIVE;
1602 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1603 tp->scb.Parm[0] = LOWORD(Addr);
1604 tp->scb.Parm[1] = HIWORD(Addr);
1605 tp->scb.CMD = RECEIVE;
1606 }
1607 else
1608 {
1609 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1610 {
1611 /* NOTE: TRANSMIT.HALT must be checked
1612 * before TRANSMIT.
1613 */
1614 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1615 tp->scb.CMD = TRANSMIT_HALT;
1616
1617 /* Parm[0] and Parm[1] are ignored
1618 * but should be set to zero!
1619 */
1620 tp->scb.Parm[0] = 0;
1621 tp->scb.Parm[1] = 0;
1622 }
1623 else
1624 {
1625 if(tp->CMDqueue & OC_TRANSMIT)
1626 {
1627 /* NOTE: TRANSMIT must be
1628 * checked after TRANSMIT.HALT
1629 */
1630 if(tp->TransmitCommandActive)
1631 {
1632 if(!tp->TransmitHaltScheduled)
1633 {
1634 tp->TransmitHaltScheduled = 1;
1635 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1636 }
1637 tp->TransmitCommandActive = 0;
1638 return;
1639 }
1640
1641 tp->CMDqueue ^= OC_TRANSMIT;
1642 tms380tr_cancel_tx_queue(tp);
1643 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1644 tp->scb.Parm[0] = LOWORD(Addr);
1645 tp->scb.Parm[1] = HIWORD(Addr);
1646 tp->scb.CMD = TRANSMIT;
1647 tp->TransmitCommandActive = 1;
1648 }
1649 else
1650 {
1651 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1652 {
1653 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1654 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1655 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1656 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1657 tp->scb.CMD = MODIFY_OPEN_PARMS;
1658 }
1659 else
1660 {
1661 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1662 {
1663 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1664 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1665 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1666 tp->scb.CMD = SET_FUNCT_ADDR;
1667 }
1668 else
1669 {
1670 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1671 {
1672 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1673 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1674 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1675 tp->scb.CMD = SET_GROUP_ADDR;
1676 }
1677 else
1678 {
1679 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1680 {
1681 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1682 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1683 tp->scb.Parm[0] = LOWORD(Addr);
1684 tp->scb.Parm[1] = HIWORD(Addr);
1685 tp->scb.CMD = READ_ERROR_LOG;
1686 }
1687 else
1688 {
1689 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1690 tp->CMDqueue = 0;
1691 return;
1692 }
1693 }
1694 }
1695 }
1696 }
1697 }
1698 }
1699 }
1700 }
1701
1702 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1703
1704 /* Execute SCB and generate IRQ when done. */
1705 tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1706
1707 return;
1708 }
1709
1710 /*
1711 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1712 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1713 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1714 * circuit fault on the lobe is detected; remove MAC frame received;
1715 * error counter overflow (255); opened adapter is the only station in ring.
1716 * After some of the IRQs the adapter is closed!
1717 */
1718 static void tms380tr_ring_status_irq(struct net_device *dev)
1719 {
1720 struct net_local *tp = netdev_priv(dev);
1721
1722 tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1723
1724 /* First: fill up statistics */
1725 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1726 {
1727 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1728 tp->MacStat.line_errors++;
1729 }
1730
1731 /* Adapter is closed, but initialized */
1732 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1733 {
1734 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1735 dev->name);
1736 tp->MacStat.line_errors++;
1737 }
1738
1739 if(tp->ssb.Parm[0] & RING_RECOVERY)
1740 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1741
1742 /* Counter overflow: read error log */
1743 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1744 {
1745 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1746 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1747 }
1748
1749 /* Adapter is closed, but initialized */
1750 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1751 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1752 dev->name);
1753
1754 /* Adapter is closed, but initialized */
1755 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1756 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1757 dev->name);
1758
1759 if(tp->ssb.Parm[0] & HARD_ERROR)
1760 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1761
1762 if(tp->ssb.Parm[0] & SOFT_ERROR)
1763 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1764
1765 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1766 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1767
1768 if(tp->ssb.Parm[0] & SINGLE_STATION)
1769 printk(KERN_INFO "%s: Single Station\n", dev->name);
1770
1771 /* Check if adapter has been closed */
1772 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1773 {
1774 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1775 "CurrentRingStat %x\n",
1776 dev->name, tp->CurrentRingStatus);
1777 tp->AdapterOpenFlag = 0;
1778 tms380tr_open_adapter(dev);
1779 }
1780
1781 return;
1782 }
1783
1784 /*
1785 * Issued if adapter has encountered an unrecoverable hardware
1786 * or software error.
1787 */
1788 static void tms380tr_chk_irq(struct net_device *dev)
1789 {
1790 int i;
1791 unsigned short AdapterCheckBlock[4];
1792 struct net_local *tp = netdev_priv(dev);
1793
1794 tp->AdapterOpenFlag = 0; /* Adapter closed now */
1795
1796 /* Page number of adapter memory */
1797 SIFWRITEW(0x0001, SIFADX);
1798 /* Address offset */
1799 SIFWRITEW(CHECKADDR, SIFADR);
1800
1801 /* Reading 8 byte adapter check block. */
1802 for(i = 0; i < 4; i++)
1803 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1804
1805 if(tms380tr_debug > 3)
1806 {
1807 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1808 for (i = 0; i < 4; i++)
1809 printk("%04X", AdapterCheckBlock[i]);
1810 printk("\n");
1811 }
1812
1813 switch(AdapterCheckBlock[0])
1814 {
1815 case DIO_PARITY:
1816 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1817 break;
1818
1819 case DMA_READ_ABORT:
1820 printk(KERN_INFO "%s DMA read operation aborted:\n",
1821 dev->name);
1822 switch (AdapterCheckBlock[1])
1823 {
1824 case 0:
1825 printk(KERN_INFO "Timeout\n");
1826 printk(KERN_INFO "Address: %04X %04X\n",
1827 AdapterCheckBlock[2],
1828 AdapterCheckBlock[3]);
1829 break;
1830
1831 case 1:
1832 printk(KERN_INFO "Parity error\n");
1833 printk(KERN_INFO "Address: %04X %04X\n",
1834 AdapterCheckBlock[2],
1835 AdapterCheckBlock[3]);
1836 break;
1837
1838 case 2:
1839 printk(KERN_INFO "Bus error\n");
1840 printk(KERN_INFO "Address: %04X %04X\n",
1841 AdapterCheckBlock[2],
1842 AdapterCheckBlock[3]);
1843 break;
1844
1845 default:
1846 printk(KERN_INFO "Unknown error.\n");
1847 break;
1848 }
1849 break;
1850
1851 case DMA_WRITE_ABORT:
1852 printk(KERN_INFO "%s: DMA write operation aborted: \n",
1853 dev->name);
1854 switch (AdapterCheckBlock[1])
1855 {
1856 case 0:
1857 printk(KERN_INFO "Timeout\n");
1858 printk(KERN_INFO "Address: %04X %04X\n",
1859 AdapterCheckBlock[2],
1860 AdapterCheckBlock[3]);
1861 break;
1862
1863 case 1:
1864 printk(KERN_INFO "Parity error\n");
1865 printk(KERN_INFO "Address: %04X %04X\n",
1866 AdapterCheckBlock[2],
1867 AdapterCheckBlock[3]);
1868 break;
1869
1870 case 2:
1871 printk(KERN_INFO "Bus error\n");
1872 printk(KERN_INFO "Address: %04X %04X\n",
1873 AdapterCheckBlock[2],
1874 AdapterCheckBlock[3]);
1875 break;
1876
1877 default:
1878 printk(KERN_INFO "Unknown error.\n");
1879 break;
1880 }
1881 break;
1882
1883 case ILLEGAL_OP_CODE:
1884 printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1885 dev->name);
1886 /* Parm[0-3]: adapter internal register R13-R15 */
1887 break;
1888
1889 case PARITY_ERRORS:
1890 printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1891 dev->name);
1892 /* Parm[0-3]: adapter internal register R13-R15 */
1893 break;
1894
1895 case RAM_DATA_ERROR:
1896 printk(KERN_INFO "%s: RAM data error\n", dev->name);
1897 /* Parm[0-1]: MSW/LSW address of RAM location. */
1898 break;
1899
1900 case RAM_PARITY_ERROR:
1901 printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1902 /* Parm[0-1]: MSW/LSW address of RAM location. */
1903 break;
1904
1905 case RING_UNDERRUN:
1906 printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1907 dev->name);
1908 break;
1909
1910 case INVALID_IRQ:
1911 printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1912 dev->name);
1913 /* Parm[0-3]: adapter internal register R13-R15 */
1914 break;
1915
1916 case INVALID_ERROR_IRQ:
1917 printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1918 dev->name);
1919 /* Parm[0-3]: adapter internal register R13-R15 */
1920 break;
1921
1922 case INVALID_XOP:
1923 printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1924 dev->name);
1925 /* Parm[0-3]: adapter internal register R13-R15 */
1926 break;
1927
1928 default:
1929 printk(KERN_INFO "%s: Unknown status", dev->name);
1930 break;
1931 }
1932
1933 if(tms380tr_chipset_init(dev) == 1)
1934 {
1935 /* Restart of firmware successful */
1936 tp->AdapterOpenFlag = 1;
1937 }
1938
1939 return;
1940 }
1941
1942 /*
1943 * Internal adapter pointer to RAM data are copied from adapter into
1944 * host system.
1945 */
1946 static int tms380tr_read_ptr(struct net_device *dev)
1947 {
1948 struct net_local *tp = netdev_priv(dev);
1949 unsigned short adapterram;
1950
1951 tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1952 ADAPTER_INT_PTRS, 16);
1953 tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1954 cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1955 return be16_to_cpu(adapterram);
1956 }
1957
1958 /*
1959 * Reads a number of bytes from adapter to system memory.
1960 */
1961 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1962 unsigned short Address, int Length)
1963 {
1964 int i;
1965 unsigned short old_sifadx, old_sifadr, InWord;
1966
1967 /* Save the current values */
1968 old_sifadx = SIFREADW(SIFADX);
1969 old_sifadr = SIFREADW(SIFADR);
1970
1971 /* Page number of adapter memory */
1972 SIFWRITEW(0x0001, SIFADX);
1973 /* Address offset in adapter RAM */
1974 SIFWRITEW(Address, SIFADR);
1975
1976 /* Copy len byte from adapter memory to system data area. */
1977 i = 0;
1978 for(;;)
1979 {
1980 InWord = SIFREADW(SIFINC);
1981
1982 *(Data + i) = HIBYTE(InWord); /* Write first byte */
1983 if(++i == Length) /* All is done break */
1984 break;
1985
1986 *(Data + i) = LOBYTE(InWord); /* Write second byte */
1987 if (++i == Length) /* All is done break */
1988 break;
1989 }
1990
1991 /* Restore original values */
1992 SIFWRITEW(old_sifadx, SIFADX);
1993 SIFWRITEW(old_sifadr, SIFADR);
1994
1995 return;
1996 }
1997
1998 /*
1999 * Cancel all queued packets in the transmission queue.
2000 */
2001 static void tms380tr_cancel_tx_queue(struct net_local* tp)
2002 {
2003 TPL *tpl;
2004
2005 /*
2006 * NOTE: There must not be an active TRANSMIT command pending, when
2007 * this function is called.
2008 */
2009 if(tp->TransmitCommandActive)
2010 return;
2011
2012 for(;;)
2013 {
2014 tpl = tp->TplBusy;
2015 if(!tpl->BusyFlag)
2016 break;
2017 /* "Remove" TPL from busy list. */
2018 tp->TplBusy = tpl->NextTPLPtr;
2019 tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
2020 tpl->BusyFlag = 0; /* "free" TPL */
2021
2022 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2023 if (tpl->DMABuff)
2024 pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE);
2025 dev_kfree_skb_any(tpl->Skb);
2026 }
2027
2028 return;
2029 }
2030
2031 /*
2032 * This function is called whenever a transmit interrupt is generated by the
2033 * adapter. For a command complete interrupt, it is checked if we have to
2034 * issue a new transmit command or not.
2035 */
2036 static void tms380tr_tx_status_irq(struct net_device *dev)
2037 {
2038 struct net_local *tp = netdev_priv(dev);
2039 unsigned char HighByte, HighAc, LowAc;
2040 TPL *tpl;
2041
2042 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2043 * available, because the CLEAR SSB command has already been issued.
2044 *
2045 * Process all complete transmissions.
2046 */
2047
2048 for(;;)
2049 {
2050 tpl = tp->TplBusy;
2051 if(!tpl->BusyFlag || (tpl->Status
2052 & (TX_VALID | TX_FRAME_COMPLETE))
2053 != TX_FRAME_COMPLETE)
2054 {
2055 break;
2056 }
2057
2058 /* "Remove" TPL from busy list. */
2059 tp->TplBusy = tpl->NextTPLPtr ;
2060
2061 /* Check the transmit status field only for directed frames*/
2062 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2063 {
2064 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2065 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2066 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2067
2068 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2069 {
2070 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2071 dev->name,
2072 *(unsigned long *)&tpl->MData[2+2]);
2073 }
2074 else
2075 {
2076 if(tms380tr_debug > 3)
2077 printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2078 dev->name);
2079 }
2080 }
2081 else
2082 {
2083 if(!DIRECTED_FRAME(tpl))
2084 {
2085 if(tms380tr_debug > 3)
2086 printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2087 dev->name);
2088 }
2089 }
2090
2091 tp->MacStat.tx_packets++;
2092 if (tpl->DMABuff)
2093 pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE);
2094 dev_kfree_skb_irq(tpl->Skb);
2095 tpl->BusyFlag = 0; /* "free" TPL */
2096 }
2097
2098 if(!tp->TplFree->NextTPLPtr->BusyFlag)
2099 netif_wake_queue(dev);
2100 return;
2101 }
2102
2103 /*
2104 * Called if a frame receive interrupt is generated by the adapter.
2105 * Check if the frame is valid and indicate it to system.
2106 */
2107 static void tms380tr_rcv_status_irq(struct net_device *dev)
2108 {
2109 struct net_local *tp = netdev_priv(dev);
2110 unsigned char *ReceiveDataPtr;
2111 struct sk_buff *skb;
2112 unsigned int Length, Length2;
2113 RPL *rpl;
2114 RPL *SaveHead;
2115 dma_addr_t dmabuf;
2116
2117 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2118 * available, because the CLEAR SSB command has already been issued.
2119 *
2120 * Process all complete receives.
2121 */
2122
2123 for(;;)
2124 {
2125 rpl = tp->RplHead;
2126 if(rpl->Status & RX_VALID)
2127 break; /* RPL still in use by adapter */
2128
2129 /* Forward RPLHead pointer to next list. */
2130 SaveHead = tp->RplHead;
2131 tp->RplHead = rpl->NextRPLPtr;
2132
2133 /* Get the frame size (Byte swap for Intel).
2134 * Do this early (see workaround comment below)
2135 */
2136 Length = be16_to_cpu((unsigned short)rpl->FrameSize);
2137
2138 /* Check if the Frame_Start, Frame_End and
2139 * Frame_Complete bits are set.
2140 */
2141 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2142 == VALID_SINGLE_BUFFER_FRAME)
2143 {
2144 ReceiveDataPtr = rpl->MData;
2145
2146 /* Workaround for delayed write of FrameSize on ISA
2147 * (FrameSize is false but valid-bit is reset)
2148 * Frame size is set to zero when the RPL is freed.
2149 * Length2 is there because there have also been
2150 * cases where the FrameSize was partially written
2151 */
2152 Length2 = be16_to_cpu((unsigned short)rpl->FrameSize);
2153
2154 if(Length == 0 || Length != Length2)
2155 {
2156 tp->RplHead = SaveHead;
2157 break; /* Return to tms380tr_interrupt */
2158 }
2159 tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2160
2161 if(tms380tr_debug > 3)
2162 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2163 dev->name, Length, Length);
2164
2165 /* Indicate the received frame to system the
2166 * adapter does the Source-Routing padding for
2167 * us. See: OpenOptions in tms380tr_init_opb()
2168 */
2169 skb = rpl->Skb;
2170 if(rpl->SkbStat == SKB_UNAVAILABLE)
2171 {
2172 /* Try again to allocate skb */
2173 skb = dev_alloc_skb(tp->MaxPacketSize);
2174 if(skb == NULL)
2175 {
2176 /* Update Stats ?? */
2177 }
2178 else
2179 {
2180 skb->dev = dev;
2181 skb_put(skb, tp->MaxPacketSize);
2182 rpl->SkbStat = SKB_DATA_COPY;
2183 ReceiveDataPtr = rpl->MData;
2184 }
2185 }
2186
2187 if(skb && (rpl->SkbStat == SKB_DATA_COPY
2188 || rpl->SkbStat == SKB_DMA_DIRECT))
2189 {
2190 if(rpl->SkbStat == SKB_DATA_COPY)
2191 memcpy(skb->data, ReceiveDataPtr, Length);
2192
2193 /* Deliver frame to system */
2194 rpl->Skb = NULL;
2195 skb_trim(skb,Length);
2196 skb->protocol = tr_type_trans(skb,dev);
2197 netif_rx(skb);
2198 dev->last_rx = jiffies;
2199 }
2200 }
2201 else /* Invalid frame */
2202 {
2203 if(rpl->Skb != NULL)
2204 dev_kfree_skb_irq(rpl->Skb);
2205
2206 /* Skip list. */
2207 if(rpl->Status & RX_START_FRAME)
2208 /* Frame start bit is set -> overflow. */
2209 tp->MacStat.rx_errors++;
2210 }
2211 if (rpl->DMABuff)
2212 pci_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, PCI_DMA_TODEVICE);
2213 rpl->DMABuff = 0;
2214
2215 /* Allocate new skb for rpl */
2216 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2217 /* skb == NULL ? then use local buffer */
2218 if(rpl->Skb == NULL)
2219 {
2220 rpl->SkbStat = SKB_UNAVAILABLE;
2221 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2222 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2223 }
2224 else /* skb != NULL */
2225 {
2226 rpl->Skb->dev = dev;
2227 skb_put(rpl->Skb, tp->MaxPacketSize);
2228
2229 /* Data unreachable for DMA ? then use local buffer */
2230 dmabuf = pci_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE);
2231 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2232 {
2233 rpl->SkbStat = SKB_DATA_COPY;
2234 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2235 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2236 }
2237 else
2238 {
2239 /* DMA directly in skb->data */
2240 rpl->SkbStat = SKB_DMA_DIRECT;
2241 rpl->FragList[0].DataAddr = htonl(dmabuf);
2242 rpl->MData = rpl->Skb->data;
2243 rpl->DMABuff = dmabuf;
2244 }
2245 }
2246
2247 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2248 rpl->FrameSize = 0;
2249
2250 /* Pass the last RPL back to the adapter */
2251 tp->RplTail->FrameSize = 0;
2252
2253 /* Reset the CSTAT field in the list. */
2254 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2255
2256 /* Current RPL becomes last one in list. */
2257 tp->RplTail = tp->RplTail->NextRPLPtr;
2258
2259 /* Inform adapter about RPL valid. */
2260 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2261 }
2262
2263 return;
2264 }
2265
2266 /*
2267 * This function should be used whenever the status of any RPL must be
2268 * modified by the driver, because the compiler may otherwise change the
2269 * order of instructions such that writing the RPL status may be executed
2270 * at an undesireable time. When this function is used, the status is
2271 * always written when the function is called.
2272 */
2273 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2274 {
2275 rpl->Status = Status;
2276
2277 return;
2278 }
2279
2280 /*
2281 * The function updates the statistic counters in mac->MacStat.
2282 * It differtiates between directed and broadcast/multicast ( ==functional)
2283 * frames.
2284 */
2285 static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2286 unsigned int Length)
2287 {
2288 tp->MacStat.rx_packets++;
2289 tp->MacStat.rx_bytes += Length;
2290
2291 /* Test functional bit */
2292 if(DataPtr[2] & GROUP_BIT)
2293 tp->MacStat.multicast++;
2294
2295 return;
2296 }
2297
2298 static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2299 {
2300 struct net_local *tp = netdev_priv(dev);
2301 struct sockaddr *saddr = addr;
2302
2303 if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2304 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2305 return -EIO;
2306 }
2307 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2308 return 0;
2309 }
2310
2311 #if TMS380TR_DEBUG > 0
2312 /*
2313 * Dump Packet (data)
2314 */
2315 static void tms380tr_dump(unsigned char *Data, int length)
2316 {
2317 int i, j;
2318
2319 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2320 {
2321 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2322 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2323 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2324 }
2325
2326 return;
2327 }
2328 #endif
2329
2330 void tmsdev_term(struct net_device *dev)
2331 {
2332 struct net_local *tp;
2333
2334 tp = netdev_priv(dev);
2335 pci_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2336 PCI_DMA_BIDIRECTIONAL);
2337 }
2338
2339 int tmsdev_init(struct net_device *dev, unsigned long dmalimit,
2340 struct pci_dev *pdev)
2341 {
2342 struct net_local *tms_local;
2343
2344 memset(dev->priv, 0, sizeof(struct net_local));
2345 tms_local = netdev_priv(dev);
2346 init_waitqueue_head(&tms_local->wait_for_tok_int);
2347 tms_local->dmalimit = dmalimit;
2348 tms_local->pdev = pdev;
2349 tms_local->dmabuffer = pci_map_single(pdev, (void *)tms_local,
2350 sizeof(struct net_local), PCI_DMA_BIDIRECTIONAL);
2351 if (tms_local->dmabuffer + sizeof(struct net_local) > dmalimit)
2352 {
2353 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2354 dev->name);
2355 tmsdev_term(dev);
2356 return -ENOMEM;
2357 }
2358
2359 /* These can be overridden by the card driver if needed */
2360 dev->open = tms380tr_open;
2361 dev->stop = tms380tr_close;
2362 dev->do_ioctl = NULL;
2363 dev->hard_start_xmit = tms380tr_send_packet;
2364 dev->tx_timeout = tms380tr_timeout;
2365 dev->watchdog_timeo = HZ;
2366 dev->get_stats = tms380tr_get_stats;
2367 dev->set_multicast_list = &tms380tr_set_multicast_list;
2368 dev->set_mac_address = tms380tr_set_mac_address;
2369
2370 return 0;
2371 }
2372
2373 #ifdef MODULE
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 struct module *TMS380_module = NULL;
2383
2384 int init_module(void)
2385 {
2386 printk(KERN_DEBUG "%s", version);
2387
2388 TMS380_module = &__this_module;
2389 return 0;
2390 }
2391
2392 void cleanup_module(void)
2393 {
2394 TMS380_module = NULL;
2395 }
2396 #endif
2397
2398 MODULE_LICENSE("GPL");
2399
2400 \f
2401 /*
2402 * Local variables:
2403 * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tms380tr.c"
2404 * alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tms380tr.c"
2405 * c-set-style "K&R"
2406 * c-indent-level: 8
2407 * c-basic-offset: 8
2408 * tab-width: 8
2409 * End:
2410 */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree