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x86, setup: reorganize the early console setup
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / tokenring / tms380tr.c
blob435ef7d5470fd8e8e6c4849c1d3dc930a13e1b3f
1 /*
2 * tms380tr.c: A network driver library for Texas Instruments TMS380-based
3 * Token Ring Adapters.
4 *
5 * Originally sktr.c: Written 1997 by Christoph Goos
6 *
7 * A fine result of the Linux Systems Network Architecture Project.
8 * http://www.linux-sna.org
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * The following modules are currently available for card support:
14 * - tmspci (Generic PCI card support)
15 * - abyss (Madge PCI support)
16 * - tmsisa (SysKonnect TR4/16 ISA)
17 *
18 * Sources:
19 * - The hardware related parts of this driver are take from
20 * the SysKonnect Token Ring driver for Windows NT.
21 * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
22 * driver, as well as the 'skeleton.c' driver by Donald Becker.
23 * - Also various other drivers in the linux source tree were taken
24 * as samples for some tasks.
25 * - TI TMS380 Second-Generation Token Ring User's Guide
26 * - TI datasheets for respective chips
27 * - David Hein at Texas Instruments
28 * - Various Madge employees
29 *
30 * Maintainer(s):
31 * JS Jay Schulist jschlst@samba.org
32 * CG Christoph Goos cgoos@syskonnect.de
33 * AF Adam Fritzler
34 * MLP Mike Phillips phillim@amtrak.com
35 * JF Jochen Friedrich jochen@scram.de
36 *
37 * Modification History:
38 * 29-Aug-97 CG Created
39 * 04-Apr-98 CG Fixed problems caused by tok_timer_check
40 * 10-Apr-98 CG Fixed lockups at cable disconnection
41 * 27-May-98 JS Formated to Linux Kernel Format
42 * 31-May-98 JS Hacked in PCI support
43 * 16-Jun-98 JS Modulized for multiple cards with one driver
44 * Sep-99 AF Renamed to tms380tr (supports more than SK's)
45 * 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support
46 * Fixed a bug causing double copies on PCI
47 * Fixed for new multicast stuff (2.2/2.3)
48 * 25-Sep-99 AF Uped TPL_NUM from 3 to 9
49 * Removed extraneous 'No free TPL'
50 * 22-Dec-99 AF Added Madge PCI Mk2 support and generalized
51 * parts of the initilization procedure.
52 * 30-Dec-99 AF Turned tms380tr into a library ala 8390.
53 * Madge support is provided in the abyss module
54 * Generic PCI support is in the tmspci module.
55 * 30-Nov-00 JF Updated PCI code to support IO MMU via
56 * pci_map_static(). Alpha uses this MMU for ISA
57 * as well.
58 * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some
59 * cleanup.
60 * 13-Jan-02 JF Add spinlock to fix race condition.
61 * 09-Nov-02 JF Fixed printks to not SPAM the console during
62 * normal operation.
63 * 30-Dec-02 JF Removed incorrect __init from
64 * tms380tr_init_card.
65 * 22-Jul-05 JF Converted to dma-mapping.
66 *
67 * To do:
68 * 1. Multi/Broadcast packet handling (this may have fixed itself)
69 * 2. Write a sktrisa module that includes the old ISA support (done)
70 * 3. Allow modules to load their own microcode
71 * 4. Speed up the BUD process -- freezing the kernel for 3+sec is
72 * quite unacceptable.
73 * 5. Still a few remaining stalls when the cable is unplugged.
74 */
75
76 #ifdef MODULE
77 static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
78 #endif
79
80 #include <linux/module.h>
81 #include <linux/kernel.h>
82 #include <linux/types.h>
83 #include <linux/fcntl.h>
84 #include <linux/interrupt.h>
85 #include <linux/ptrace.h>
86 #include <linux/ioport.h>
87 #include <linux/in.h>
88 #include <linux/string.h>
89 #include <linux/time.h>
90 #include <linux/errno.h>
91 #include <linux/init.h>
92 #include <linux/dma-mapping.h>
93 #include <linux/delay.h>
94 #include <linux/netdevice.h>
95 #include <linux/etherdevice.h>
96 #include <linux/skbuff.h>
97 #include <linux/trdevice.h>
98 #include <linux/firmware.h>
99 #include <linux/bitops.h>
100
101 #include <asm/system.h>
102 #include <asm/io.h>
103 #include <asm/dma.h>
104 #include <asm/irq.h>
105 #include <asm/uaccess.h>
106
107 #include "tms380tr.h" /* Our Stuff */
108
109 /* Use 0 for production, 1 for verification, 2 for debug, and
110 * 3 for very verbose debug.
111 */
112 #ifndef TMS380TR_DEBUG
113 #define TMS380TR_DEBUG 0
114 #endif
115 static unsigned int tms380tr_debug = TMS380TR_DEBUG;
116
117 /* Index to functions, as function prototypes.
118 * Alphabetical by function name.
119 */
120
121 /* "A" */
122 /* "B" */
123 static int tms380tr_bringup_diags(struct net_device *dev);
124 /* "C" */
125 static void tms380tr_cancel_tx_queue(struct net_local* tp);
126 static int tms380tr_chipset_init(struct net_device *dev);
127 static void tms380tr_chk_irq(struct net_device *dev);
128 static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
129 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
130 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
131 int tms380tr_close(struct net_device *dev);
132 static void tms380tr_cmd_status_irq(struct net_device *dev);
133 /* "D" */
134 static void tms380tr_disable_interrupts(struct net_device *dev);
135 #if TMS380TR_DEBUG > 0
136 static void tms380tr_dump(unsigned char *Data, int length);
137 #endif
138 /* "E" */
139 static void tms380tr_enable_interrupts(struct net_device *dev);
140 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
141 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
142 /* "F" */
143 /* "G" */
144 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
145 /* "H" */
146 static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
147 struct net_device *dev);
148 /* "I" */
149 static int tms380tr_init_adapter(struct net_device *dev);
150 static void tms380tr_init_ipb(struct net_local *tp);
151 static void tms380tr_init_net_local(struct net_device *dev);
152 static void tms380tr_init_opb(struct net_device *dev);
153 /* "M" */
154 /* "O" */
155 int tms380tr_open(struct net_device *dev);
156 static void tms380tr_open_adapter(struct net_device *dev);
157 /* "P" */
158 /* "R" */
159 static void tms380tr_rcv_status_irq(struct net_device *dev);
160 static int tms380tr_read_ptr(struct net_device *dev);
161 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
162 unsigned short Address, int Length);
163 static int tms380tr_reset_adapter(struct net_device *dev);
164 static void tms380tr_reset_interrupt(struct net_device *dev);
165 static void tms380tr_ring_status_irq(struct net_device *dev);
166 /* "S" */
167 static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
168 struct net_device *dev);
169 static void tms380tr_set_multicast_list(struct net_device *dev);
170 static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
171 /* "T" */
172 static void tms380tr_timer_chk(unsigned long data);
173 static void tms380tr_timer_end_wait(unsigned long data);
174 static void tms380tr_tx_status_irq(struct net_device *dev);
175 /* "U" */
176 static void tms380tr_update_rcv_stats(struct net_local *tp,
177 unsigned char DataPtr[], unsigned int Length);
178 /* "W" */
179 void tms380tr_wait(unsigned long time);
180 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
181 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
182
183 #define SIFREADB(reg) \
184 (((struct net_local *)netdev_priv(dev))->sifreadb(dev, reg))
185 #define SIFWRITEB(val, reg) \
186 (((struct net_local *)netdev_priv(dev))->sifwriteb(dev, val, reg))
187 #define SIFREADW(reg) \
188 (((struct net_local *)netdev_priv(dev))->sifreadw(dev, reg))
189 #define SIFWRITEW(val, reg) \
190 (((struct net_local *)netdev_priv(dev))->sifwritew(dev, val, reg))
191
192
193
194 #if 0 /* TMS380TR_DEBUG > 0 */
195 static int madgemc_sifprobe(struct net_device *dev)
196 {
197 unsigned char old, chk1, chk2;
198
199 old = SIFREADB(SIFADR); /* Get the old SIFADR value */
200
201 chk1 = 0; /* Begin with check value 0 */
202 do {
203 madgemc_setregpage(dev, 0);
204 /* Write new SIFADR value */
205 SIFWRITEB(chk1, SIFADR);
206 chk2 = SIFREADB(SIFADR);
207 if (chk2 != chk1)
208 return -1;
209
210 madgemc_setregpage(dev, 1);
211 /* Read, invert and write */
212 chk2 = SIFREADB(SIFADD);
213 if (chk2 != chk1)
214 return -1;
215
216 madgemc_setregpage(dev, 0);
217 chk2 ^= 0x0FE;
218 SIFWRITEB(chk2, SIFADR);
219
220 /* Read, invert and compare */
221 madgemc_setregpage(dev, 1);
222 chk2 = SIFREADB(SIFADD);
223 madgemc_setregpage(dev, 0);
224 chk2 ^= 0x0FE;
225
226 if(chk1 != chk2)
227 return (-1); /* No adapter */
228 chk1 -= 2;
229 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
230
231 madgemc_setregpage(dev, 0); /* sanity */
232 /* Restore the SIFADR value */
233 SIFWRITEB(old, SIFADR);
234
235 return (0);
236 }
237 #endif
238
239 /*
240 * Open/initialize the board. This is called sometime after
241 * booting when the 'ifconfig' program is run.
242 *
243 * This routine should set everything up anew at each open, even
244 * registers that "should" only need to be set once at boot, so that
245 * there is non-reboot way to recover if something goes wrong.
246 */
247 int tms380tr_open(struct net_device *dev)
248 {
249 struct net_local *tp = netdev_priv(dev);
250 int err;
251
252 /* init the spinlock */
253 spin_lock_init(&tp->lock);
254 init_timer(&tp->timer);
255
256 /* Reset the hardware here. Don't forget to set the station address. */
257
258 #ifdef CONFIG_ISA
259 if(dev->dma > 0)
260 {
261 unsigned long flags=claim_dma_lock();
262 disable_dma(dev->dma);
263 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
264 enable_dma(dev->dma);
265 release_dma_lock(flags);
266 }
267 #endif
268
269 err = tms380tr_chipset_init(dev);
270 if(err)
271 {
272 printk(KERN_INFO "%s: Chipset initialization error\n",
273 dev->name);
274 return (-1);
275 }
276
277 tp->timer.expires = jiffies + 30*HZ;
278 tp->timer.function = tms380tr_timer_end_wait;
279 tp->timer.data = (unsigned long)dev;
280 add_timer(&tp->timer);
281
282 printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
283 dev->name, tms380tr_read_ptr(dev));
284
285 tms380tr_enable_interrupts(dev);
286 tms380tr_open_adapter(dev);
287
288 netif_start_queue(dev);
289
290 /* Wait for interrupt from hardware. If interrupt does not come,
291 * there will be a timeout from the timer.
292 */
293 tp->Sleeping = 1;
294 interruptible_sleep_on(&tp->wait_for_tok_int);
295 del_timer(&tp->timer);
296
297 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
298 if(tp->AdapterVirtOpenFlag == 0)
299 {
300 tms380tr_disable_interrupts(dev);
301 return (-1);
302 }
303
304 tp->StartTime = jiffies;
305
306 /* Start function control timer */
307 tp->timer.expires = jiffies + 2*HZ;
308 tp->timer.function = tms380tr_timer_chk;
309 tp->timer.data = (unsigned long)dev;
310 add_timer(&tp->timer);
311
312 return (0);
313 }
314
315 /*
316 * Timeout function while waiting for event
317 */
318 static void tms380tr_timer_end_wait(unsigned long data)
319 {
320 struct net_device *dev = (struct net_device*)data;
321 struct net_local *tp = netdev_priv(dev);
322
323 if(tp->Sleeping)
324 {
325 tp->Sleeping = 0;
326 wake_up_interruptible(&tp->wait_for_tok_int);
327 }
328 }
329
330 /*
331 * Initialize the chipset
332 */
333 static int tms380tr_chipset_init(struct net_device *dev)
334 {
335 struct net_local *tp = netdev_priv(dev);
336 int err;
337
338 tms380tr_init_ipb(tp);
339 tms380tr_init_opb(dev);
340 tms380tr_init_net_local(dev);
341
342 if(tms380tr_debug > 3)
343 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
344 err = tms380tr_reset_adapter(dev);
345 if(err < 0)
346 return (-1);
347
348 if(tms380tr_debug > 3)
349 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
350 err = tms380tr_bringup_diags(dev);
351 if(err < 0)
352 return (-1);
353
354 if(tms380tr_debug > 3)
355 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
356 err = tms380tr_init_adapter(dev);
357 if(err < 0)
358 return (-1);
359
360 if(tms380tr_debug > 3)
361 printk(KERN_DEBUG "%s: Done!\n", dev->name);
362 return (0);
363 }
364
365 /*
366 * Initializes the net_local structure.
367 */
368 static void tms380tr_init_net_local(struct net_device *dev)
369 {
370 struct net_local *tp = netdev_priv(dev);
371 int i;
372 dma_addr_t dmabuf;
373
374 tp->scb.CMD = 0;
375 tp->scb.Parm[0] = 0;
376 tp->scb.Parm[1] = 0;
377
378 tp->ssb.STS = 0;
379 tp->ssb.Parm[0] = 0;
380 tp->ssb.Parm[1] = 0;
381 tp->ssb.Parm[2] = 0;
382
383 tp->CMDqueue = 0;
384
385 tp->AdapterOpenFlag = 0;
386 tp->AdapterVirtOpenFlag = 0;
387 tp->ScbInUse = 0;
388 tp->OpenCommandIssued = 0;
389 tp->ReOpenInProgress = 0;
390 tp->HaltInProgress = 0;
391 tp->TransmitHaltScheduled = 0;
392 tp->LobeWireFaultLogged = 0;
393 tp->LastOpenStatus = 0;
394 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
395
396 /* Create circular chain of transmit lists */
397 for (i = 0; i < TPL_NUM; i++)
398 {
399 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
400 tp->Tpl[i].Status = 0;
401 tp->Tpl[i].FrameSize = 0;
402 tp->Tpl[i].FragList[0].DataCount = 0;
403 tp->Tpl[i].FragList[0].DataAddr = 0;
404 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
405 tp->Tpl[i].MData = NULL;
406 tp->Tpl[i].TPLIndex = i;
407 tp->Tpl[i].DMABuff = 0;
408 tp->Tpl[i].BusyFlag = 0;
409 }
410
411 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
412
413 /* Create circular chain of receive lists */
414 for (i = 0; i < RPL_NUM; i++)
415 {
416 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
417 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
418 tp->Rpl[i].FrameSize = 0;
419 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
420
421 /* Alloc skb and point adapter to data area */
422 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
423 tp->Rpl[i].DMABuff = 0;
424
425 /* skb == NULL ? then use local buffer */
426 if(tp->Rpl[i].Skb == NULL)
427 {
428 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
429 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
430 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
431 }
432 else /* SKB != NULL */
433 {
434 tp->Rpl[i].Skb->dev = dev;
435 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
436
437 /* data unreachable for DMA ? then use local buffer */
438 dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
439 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
440 {
441 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
442 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
443 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
444 }
445 else /* DMA directly in skb->data */
446 {
447 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
448 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
449 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
450 tp->Rpl[i].DMABuff = dmabuf;
451 }
452 }
453
454 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
455 tp->Rpl[i].RPLIndex = i;
456 }
457
458 tp->RplHead = &tp->Rpl[0];
459 tp->RplTail = &tp->Rpl[RPL_NUM-1];
460 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
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
482 /*
483 * Initializes the open parameter block.
484 */
485 static void tms380tr_init_opb(struct net_device *dev)
486 {
487 struct net_local *tp;
488 unsigned long Addr;
489 unsigned short RplSize = RPL_SIZE;
490 unsigned short TplSize = TPL_SIZE;
491 unsigned short BufferSize = BUFFER_SIZE;
492 int i;
493
494 tp = netdev_priv(dev);
495
496 tp->ocpl.OPENOptions = 0;
497 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
498 tp->ocpl.FullDuplex = 0;
499 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
500
501 /*
502 * Set node address
503 *
504 * We go ahead and put it in the OPB even though on
505 * most of the generic adapters this isn't required.
506 * Its simpler this way. -- ASF
507 */
508 for (i=0;i<6;i++)
509 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
510
511 tp->ocpl.GroupAddr = 0;
512 tp->ocpl.FunctAddr = 0;
513 tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
514 tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
515 tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
516 tp->ocpl.Reserved = 0;
517 tp->ocpl.TXBufMin = TX_BUF_MIN;
518 tp->ocpl.TXBufMax = TX_BUF_MAX;
519
520 Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
521
522 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
523 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
524 }
525
526 /*
527 * Send OPEN command to adapter
528 */
529 static void tms380tr_open_adapter(struct net_device *dev)
530 {
531 struct net_local *tp = netdev_priv(dev);
532
533 if(tp->OpenCommandIssued)
534 return;
535
536 tp->OpenCommandIssued = 1;
537 tms380tr_exec_cmd(dev, OC_OPEN);
538 }
539
540 /*
541 * Clear the adapter's interrupt flag. Clear system interrupt enable
542 * (SINTEN): disable adapter to system interrupts.
543 */
544 static void tms380tr_disable_interrupts(struct net_device *dev)
545 {
546 SIFWRITEB(0, SIFACL);
547 }
548
549 /*
550 * Set the adapter's interrupt flag. Set system interrupt enable
551 * (SINTEN): enable adapter to system interrupts.
552 */
553 static void tms380tr_enable_interrupts(struct net_device *dev)
554 {
555 SIFWRITEB(ACL_SINTEN, SIFACL);
556 }
557
558 /*
559 * Put command in command queue, try to execute it.
560 */
561 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
562 {
563 struct net_local *tp = netdev_priv(dev);
564
565 tp->CMDqueue |= Command;
566 tms380tr_chk_outstanding_cmds(dev);
567 }
568
569 static void tms380tr_timeout(struct net_device *dev)
570 {
571 /*
572 * If we get here, some higher level has decided we are broken.
573 * There should really be a "kick me" function call instead.
574 *
575 * Resetting the token ring adapter takes a long time so just
576 * fake transmission time and go on trying. Our own timeout
577 * routine is in tms380tr_timer_chk()
578 */
579 dev->trans_start = jiffies; /* prevent tx timeout */
580 netif_wake_queue(dev);
581 }
582
583 /*
584 * Gets skb from system, queues it and checks if it can be sent
585 */
586 static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
587 struct net_device *dev)
588 {
589 struct net_local *tp = netdev_priv(dev);
590 netdev_tx_t rc;
591
592 rc = tms380tr_hardware_send_packet(skb, dev);
593 if(tp->TplFree->NextTPLPtr->BusyFlag)
594 netif_stop_queue(dev);
595 return rc;
596 }
597
598 /*
599 * Move frames into adapter tx queue
600 */
601 static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
602 struct net_device *dev)
603 {
604 TPL *tpl;
605 short length;
606 unsigned char *buf;
607 unsigned long flags;
608 int i;
609 dma_addr_t dmabuf, newbuf;
610 struct net_local *tp = netdev_priv(dev);
611
612 /* Try to get a free TPL from the chain.
613 *
614 * NOTE: We *must* always leave one unused TPL in the chain,
615 * because otherwise the adapter might send frames twice.
616 */
617 spin_lock_irqsave(&tp->lock, flags);
618 if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
619 if (tms380tr_debug > 0)
620 printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
621 spin_unlock_irqrestore(&tp->lock, flags);
622 return NETDEV_TX_BUSY;
623 }
624
625 dmabuf = 0;
626
627 /* Is buffer reachable for Busmaster-DMA? */
628
629 length = skb->len;
630 dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE);
631 if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
632 /* Copy frame to local buffer */
633 dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE);
634 dmabuf = 0;
635 i = tp->TplFree->TPLIndex;
636 buf = tp->LocalTxBuffers[i];
637 skb_copy_from_linear_data(skb, buf, length);
638 newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
639 }
640 else {
641 /* Send direct from skb->data */
642 newbuf = dmabuf;
643 buf = skb->data;
644 }
645 /* Source address in packet? */
646 tms380tr_chk_src_addr(buf, dev->dev_addr);
647 tp->LastSendTime = jiffies;
648 tpl = tp->TplFree; /* Get the "free" TPL */
649 tpl->BusyFlag = 1; /* Mark TPL as busy */
650 tp->TplFree = tpl->NextTPLPtr;
651
652 /* Save the skb for delayed return of skb to system */
653 tpl->Skb = skb;
654 tpl->DMABuff = dmabuf;
655 tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
656 tpl->FragList[0].DataAddr = htonl(newbuf);
657
658 /* Write the data length in the transmit list. */
659 tpl->FrameSize = cpu_to_be16((unsigned short)length);
660 tpl->MData = buf;
661
662 /* Transmit the frame and set the status values. */
663 tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
664 | TX_END_FRAME | TX_PASS_SRC_ADDR
665 | TX_FRAME_IRQ);
666
667 /* Let adapter send the frame. */
668 tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
669 spin_unlock_irqrestore(&tp->lock, flags);
670
671 return NETDEV_TX_OK;
672 }
673
674 /*
675 * Write the given value to the 'Status' field of the specified TPL.
676 * NOTE: This function should be used whenever the status of any TPL must be
677 * modified by the driver, because the compiler may otherwise change the
678 * order of instructions such that writing the TPL status may be executed at
679 * an undesirable time. When this function is used, the status is always
680 * written when the function is called.
681 */
682 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
683 {
684 tpl->Status = Status;
685 }
686
687 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
688 {
689 unsigned char SRBit;
690
691 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
692 return;
693 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
694 return;
695
696 SRBit = frame[8] & 0x80;
697 memcpy(&frame[8], hw_addr, 6);
698 frame[8] |= SRBit;
699 }
700
701 /*
702 * The timer routine: Check if adapter still open and working, reopen if not.
703 */
704 static void tms380tr_timer_chk(unsigned long data)
705 {
706 struct net_device *dev = (struct net_device*)data;
707 struct net_local *tp = netdev_priv(dev);
708
709 if(tp->HaltInProgress)
710 return;
711
712 tms380tr_chk_outstanding_cmds(dev);
713 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies) &&
714 (tp->TplFree != tp->TplBusy))
715 {
716 /* Anything to send, but stalled too long */
717 tp->LastSendTime = jiffies;
718 tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
719 }
720
721 tp->timer.expires = jiffies + 2*HZ;
722 add_timer(&tp->timer);
723
724 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
725 return;
726 tp->ReOpenInProgress = 1;
727 tms380tr_open_adapter(dev);
728 }
729
730 /*
731 * The typical workload of the driver: Handle the network interface interrupts.
732 */
733 irqreturn_t tms380tr_interrupt(int irq, void *dev_id)
734 {
735 struct net_device *dev = dev_id;
736 struct net_local *tp;
737 unsigned short irq_type;
738 int handled = 0;
739
740 tp = netdev_priv(dev);
741
742 irq_type = SIFREADW(SIFSTS);
743
744 while(irq_type & STS_SYSTEM_IRQ) {
745 handled = 1;
746 irq_type &= STS_IRQ_MASK;
747
748 if(!tms380tr_chk_ssb(tp, irq_type)) {
749 printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
750 break;
751 }
752
753 switch(irq_type) {
754 case STS_IRQ_RECEIVE_STATUS:
755 tms380tr_reset_interrupt(dev);
756 tms380tr_rcv_status_irq(dev);
757 break;
758
759 case STS_IRQ_TRANSMIT_STATUS:
760 /* Check if TRANSMIT.HALT command is complete */
761 if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
762 tp->TransmitCommandActive = 0;
763 tp->TransmitHaltScheduled = 0;
764
765 /* Issue a new transmit command. */
766 tms380tr_exec_cmd(dev, OC_TRANSMIT);
767 }
768
769 tms380tr_reset_interrupt(dev);
770 tms380tr_tx_status_irq(dev);
771 break;
772
773 case STS_IRQ_COMMAND_STATUS:
774 /* The SSB contains status of last command
775 * other than receive/transmit.
776 */
777 tms380tr_cmd_status_irq(dev);
778 break;
779
780 case STS_IRQ_SCB_CLEAR:
781 /* The SCB is free for another command. */
782 tp->ScbInUse = 0;
783 tms380tr_chk_outstanding_cmds(dev);
784 break;
785
786 case STS_IRQ_RING_STATUS:
787 tms380tr_ring_status_irq(dev);
788 break;
789
790 case STS_IRQ_ADAPTER_CHECK:
791 tms380tr_chk_irq(dev);
792 break;
793
794 case STS_IRQ_LLC_STATUS:
795 printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
796 break;
797
798 case STS_IRQ_TIMER:
799 printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
800 break;
801
802 case STS_IRQ_RECEIVE_PENDING:
803 printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
804 break;
805
806 default:
807 printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
808 break;
809 }
810
811 /* Reset system interrupt if not already done. */
812 if(irq_type != STS_IRQ_TRANSMIT_STATUS &&
813 irq_type != STS_IRQ_RECEIVE_STATUS) {
814 tms380tr_reset_interrupt(dev);
815 }
816
817 irq_type = SIFREADW(SIFSTS);
818 }
819
820 return IRQ_RETVAL(handled);
821 }
822
823 /*
824 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
825 */
826 static void tms380tr_reset_interrupt(struct net_device *dev)
827 {
828 struct net_local *tp = netdev_priv(dev);
829 SSB *ssb = &tp->ssb;
830
831 /*
832 * [Workaround for "Data Late"]
833 * Set all fields of the SSB to well-defined values so we can
834 * check if the adapter has written the SSB.
835 */
836
837 ssb->STS = (unsigned short) -1;
838 ssb->Parm[0] = (unsigned short) -1;
839 ssb->Parm[1] = (unsigned short) -1;
840 ssb->Parm[2] = (unsigned short) -1;
841
842 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
843 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
844 */
845 tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
846 }
847
848 /*
849 * Check if the SSB has actually been written by the adapter.
850 */
851 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
852 {
853 SSB *ssb = &tp->ssb; /* The address of the SSB. */
854
855 /* C 0 1 2 INTERRUPT CODE
856 * - - - - --------------
857 * 1 1 1 1 TRANSMIT STATUS
858 * 1 1 1 1 RECEIVE STATUS
859 * 1 ? ? 0 COMMAND STATUS
860 * 0 0 0 0 SCB CLEAR
861 * 1 1 0 0 RING STATUS
862 * 0 0 0 0 ADAPTER CHECK
863 *
864 * 0 = SSB field not affected by interrupt
865 * 1 = SSB field is affected by interrupt
866 *
867 * C = SSB ADDRESS +0: COMMAND
868 * 0 = SSB ADDRESS +2: STATUS 0
869 * 1 = SSB ADDRESS +4: STATUS 1
870 * 2 = SSB ADDRESS +6: STATUS 2
871 */
872
873 /* Check if this interrupt does use the SSB. */
874
875 if(IrqType != STS_IRQ_TRANSMIT_STATUS &&
876 IrqType != STS_IRQ_RECEIVE_STATUS &&
877 IrqType != STS_IRQ_COMMAND_STATUS &&
878 IrqType != STS_IRQ_RING_STATUS)
879 {
880 return (1); /* SSB not involved. */
881 }
882
883 /* Note: All fields of the SSB have been set to all ones (-1) after it
884 * has last been used by the software (see DriverIsr()).
885 *
886 * Check if the affected SSB fields are still unchanged.
887 */
888
889 if(ssb->STS == (unsigned short) -1)
890 return (0); /* Command field not yet available. */
891 if(IrqType == STS_IRQ_COMMAND_STATUS)
892 return (1); /* Status fields not always affected. */
893 if(ssb->Parm[0] == (unsigned short) -1)
894 return (0); /* Status 1 field not yet available. */
895 if(IrqType == STS_IRQ_RING_STATUS)
896 return (1); /* Status 2 & 3 fields not affected. */
897
898 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
899 if(ssb->Parm[1] == (unsigned short) -1)
900 return (0); /* Status 2 field not yet available. */
901 if(ssb->Parm[2] == (unsigned short) -1)
902 return (0); /* Status 3 field not yet available. */
903
904 return (1); /* All SSB fields have been written by the adapter. */
905 }
906
907 /*
908 * Evaluates the command results status in the SSB status field.
909 */
910 static void tms380tr_cmd_status_irq(struct net_device *dev)
911 {
912 struct net_local *tp = netdev_priv(dev);
913 unsigned short ssb_cmd, ssb_parm_0;
914 unsigned short ssb_parm_1;
915 char *open_err = "Open error -";
916 char *code_err = "Open code -";
917
918 /* Copy the ssb values to local variables */
919 ssb_cmd = tp->ssb.STS;
920 ssb_parm_0 = tp->ssb.Parm[0];
921 ssb_parm_1 = tp->ssb.Parm[1];
922
923 if(ssb_cmd == OPEN)
924 {
925 tp->Sleeping = 0;
926 if(!tp->ReOpenInProgress)
927 wake_up_interruptible(&tp->wait_for_tok_int);
928
929 tp->OpenCommandIssued = 0;
930 tp->ScbInUse = 0;
931
932 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
933 {
934 /* Success, the adapter is open. */
935 tp->LobeWireFaultLogged = 0;
936 tp->AdapterOpenFlag = 1;
937 tp->AdapterVirtOpenFlag = 1;
938 tp->TransmitCommandActive = 0;
939 tms380tr_exec_cmd(dev, OC_TRANSMIT);
940 tms380tr_exec_cmd(dev, OC_RECEIVE);
941
942 if(tp->ReOpenInProgress)
943 tp->ReOpenInProgress = 0;
944
945 return;
946 }
947 else /* The adapter did not open. */
948 {
949 if(ssb_parm_0 & NODE_ADDR_ERROR)
950 printk(KERN_INFO "%s: Node address error\n",
951 dev->name);
952 if(ssb_parm_0 & LIST_SIZE_ERROR)
953 printk(KERN_INFO "%s: List size error\n",
954 dev->name);
955 if(ssb_parm_0 & BUF_SIZE_ERROR)
956 printk(KERN_INFO "%s: Buffer size error\n",
957 dev->name);
958 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
959 printk(KERN_INFO "%s: Tx buffer count error\n",
960 dev->name);
961 if(ssb_parm_0 & INVALID_OPEN_OPTION)
962 printk(KERN_INFO "%s: Invalid open option\n",
963 dev->name);
964 if(ssb_parm_0 & OPEN_ERROR)
965 {
966 /* Show the open phase. */
967 switch(ssb_parm_0 & OPEN_PHASES_MASK)
968 {
969 case LOBE_MEDIA_TEST:
970 if(!tp->LobeWireFaultLogged)
971 {
972 tp->LobeWireFaultLogged = 1;
973 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
974 }
975 tp->ReOpenInProgress = 1;
976 tp->AdapterOpenFlag = 0;
977 tp->AdapterVirtOpenFlag = 1;
978 tms380tr_open_adapter(dev);
979 return;
980
981 case PHYSICAL_INSERTION:
982 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
983 break;
984
985 case ADDRESS_VERIFICATION:
986 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
987 break;
988
989 case PARTICIPATION_IN_RING_POLL:
990 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
991 break;
992
993 case REQUEST_INITIALISATION:
994 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
995 break;
996
997 case FULLDUPLEX_CHECK:
998 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
999 break;
1000
1001 default:
1002 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1003 break;
1004 }
1005
1006 /* Show the open errors. */
1007 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1008 {
1009 case OPEN_FUNCTION_FAILURE:
1010 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1011 tp->LastOpenStatus =
1012 OPEN_FUNCTION_FAILURE;
1013 break;
1014
1015 case OPEN_SIGNAL_LOSS:
1016 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1017 tp->LastOpenStatus =
1018 OPEN_SIGNAL_LOSS;
1019 break;
1020
1021 case OPEN_TIMEOUT:
1022 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1023 tp->LastOpenStatus =
1024 OPEN_TIMEOUT;
1025 break;
1026
1027 case OPEN_RING_FAILURE:
1028 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1029 tp->LastOpenStatus =
1030 OPEN_RING_FAILURE;
1031 break;
1032
1033 case OPEN_RING_BEACONING:
1034 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1035 tp->LastOpenStatus =
1036 OPEN_RING_BEACONING;
1037 break;
1038
1039 case OPEN_DUPLICATE_NODEADDR:
1040 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1041 tp->LastOpenStatus =
1042 OPEN_DUPLICATE_NODEADDR;
1043 break;
1044
1045 case OPEN_REQUEST_INIT:
1046 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1047 tp->LastOpenStatus =
1048 OPEN_REQUEST_INIT;
1049 break;
1050
1051 case OPEN_REMOVE_RECEIVED:
1052 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1053 tp->LastOpenStatus =
1054 OPEN_REMOVE_RECEIVED;
1055 break;
1056
1057 case OPEN_FULLDUPLEX_SET:
1058 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1059 tp->LastOpenStatus =
1060 OPEN_FULLDUPLEX_SET;
1061 break;
1062
1063 default:
1064 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1065 tp->LastOpenStatus =
1066 OPEN_FUNCTION_FAILURE;
1067 break;
1068 }
1069 }
1070
1071 tp->AdapterOpenFlag = 0;
1072 tp->AdapterVirtOpenFlag = 0;
1073
1074 return;
1075 }
1076 }
1077 else
1078 {
1079 if(ssb_cmd != READ_ERROR_LOG)
1080 return;
1081
1082 /* Add values from the error log table to the MAC
1083 * statistics counters and update the errorlogtable
1084 * memory.
1085 */
1086 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1087 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1088 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1089 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1090 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1091 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1092 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1093 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1094 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1095 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1096 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1097 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1098 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1099 }
1100 }
1101
1102 /*
1103 * The inverse routine to tms380tr_open().
1104 */
1105 int tms380tr_close(struct net_device *dev)
1106 {
1107 struct net_local *tp = netdev_priv(dev);
1108 netif_stop_queue(dev);
1109
1110 del_timer(&tp->timer);
1111
1112 /* Flush the Tx and disable Rx here. */
1113
1114 tp->HaltInProgress = 1;
1115 tms380tr_exec_cmd(dev, OC_CLOSE);
1116 tp->timer.expires = jiffies + 1*HZ;
1117 tp->timer.function = tms380tr_timer_end_wait;
1118 tp->timer.data = (unsigned long)dev;
1119 add_timer(&tp->timer);
1120
1121 tms380tr_enable_interrupts(dev);
1122
1123 tp->Sleeping = 1;
1124 interruptible_sleep_on(&tp->wait_for_tok_int);
1125 tp->TransmitCommandActive = 0;
1126
1127 del_timer(&tp->timer);
1128 tms380tr_disable_interrupts(dev);
1129
1130 #ifdef CONFIG_ISA
1131 if(dev->dma > 0)
1132 {
1133 unsigned long flags=claim_dma_lock();
1134 disable_dma(dev->dma);
1135 release_dma_lock(flags);
1136 }
1137 #endif
1138
1139 SIFWRITEW(0xFF00, SIFCMD);
1140 #if 0
1141 if(dev->dma > 0) /* what the? */
1142 SIFWRITEB(0xff, POSREG);
1143 #endif
1144 tms380tr_cancel_tx_queue(tp);
1145
1146 return (0);
1147 }
1148
1149 /*
1150 * Get the current statistics. This may be called with the card open
1151 * or closed.
1152 */
1153 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1154 {
1155 struct net_local *tp = netdev_priv(dev);
1156
1157 return ((struct net_device_stats *)&tp->MacStat);
1158 }
1159
1160 /*
1161 * Set or clear the multicast filter for this adapter.
1162 */
1163 static void tms380tr_set_multicast_list(struct net_device *dev)
1164 {
1165 struct net_local *tp = netdev_priv(dev);
1166 unsigned int OpenOptions;
1167
1168 OpenOptions = tp->ocpl.OPENOptions &
1169 ~(PASS_ADAPTER_MAC_FRAMES
1170 | PASS_ATTENTION_FRAMES
1171 | PASS_BEACON_MAC_FRAMES
1172 | COPY_ALL_MAC_FRAMES
1173 | COPY_ALL_NON_MAC_FRAMES);
1174
1175 tp->ocpl.FunctAddr = 0;
1176
1177 if(dev->flags & IFF_PROMISC)
1178 /* Enable promiscuous mode */
1179 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1180 COPY_ALL_MAC_FRAMES;
1181 else
1182 {
1183 if(dev->flags & IFF_ALLMULTI)
1184 {
1185 /* Disable promiscuous mode, use normal mode. */
1186 tp->ocpl.FunctAddr = 0xFFFFFFFF;
1187 }
1188 else
1189 {
1190 struct netdev_hw_addr *ha;
1191
1192 netdev_for_each_mc_addr(ha, dev) {
1193 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1194 ha->addr[2];
1195 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1196 ha->addr[3];
1197 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1198 ha->addr[4];
1199 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1200 ha->addr[5];
1201 }
1202 }
1203 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1204 }
1205
1206 tp->ocpl.OPENOptions = OpenOptions;
1207 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1208 }
1209
1210 /*
1211 * Wait for some time (microseconds)
1212 */
1213 void tms380tr_wait(unsigned long time)
1214 {
1215 #if 0
1216 long tmp;
1217
1218 tmp = jiffies + time/(1000000/HZ);
1219 do {
1220 tmp = schedule_timeout_interruptible(tmp);
1221 } while(time_after(tmp, jiffies));
1222 #else
1223 udelay(time);
1224 #endif
1225 }
1226
1227 /*
1228 * Write a command value to the SIFCMD register
1229 */
1230 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1231 {
1232 unsigned short cmd;
1233 unsigned short SifStsValue;
1234 unsigned long loop_counter;
1235
1236 WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1237 cmd = (unsigned short)WriteValue;
1238 loop_counter = 0,5 * 800000;
1239 do {
1240 SifStsValue = SIFREADW(SIFSTS);
1241 } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1242 SIFWRITEW(cmd, SIFCMD);
1243 }
1244
1245 /*
1246 * Processes adapter hardware reset, halts adapter and downloads firmware,
1247 * clears the halt bit.
1248 */
1249 static int tms380tr_reset_adapter(struct net_device *dev)
1250 {
1251 struct net_local *tp = netdev_priv(dev);
1252 unsigned short *fw_ptr;
1253 unsigned short count, c, count2;
1254 const struct firmware *fw_entry = NULL;
1255
1256 if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1257 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1258 dev->name, "tms380tr.bin");
1259 return (-1);
1260 }
1261
1262 fw_ptr = (unsigned short *)fw_entry->data;
1263 count2 = fw_entry->size / 2;
1264
1265 /* Hardware adapter reset */
1266 SIFWRITEW(ACL_ARESET, SIFACL);
1267 tms380tr_wait(40);
1268
1269 c = SIFREADW(SIFACL);
1270 tms380tr_wait(20);
1271
1272 if(dev->dma == 0) /* For PCI adapters */
1273 {
1274 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1275 if(tp->setnselout)
1276 c |= (*tp->setnselout)(dev);
1277 }
1278
1279 /* In case a command is pending - forget it */
1280 tp->ScbInUse = 0;
1281
1282 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1283 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1284 c |= ACL_BOOT;
1285 c |= ACL_SINTEN;
1286 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1287 SIFWRITEW(c, SIFACL);
1288 tms380tr_wait(40);
1289
1290 count = 0;
1291 /* Download firmware via DIO interface: */
1292 do {
1293 if (count2 < 3) continue;
1294
1295 /* Download first address part */
1296 SIFWRITEW(*fw_ptr, SIFADX);
1297 fw_ptr++;
1298 count2--;
1299 /* Download second address part */
1300 SIFWRITEW(*fw_ptr, SIFADD);
1301 fw_ptr++;
1302 count2--;
1303
1304 if((count = *fw_ptr) != 0) /* Load loop counter */
1305 {
1306 fw_ptr++; /* Download block data */
1307 count2--;
1308 if (count > count2) continue;
1309
1310 for(; count > 0; count--)
1311 {
1312 SIFWRITEW(*fw_ptr, SIFINC);
1313 fw_ptr++;
1314 count2--;
1315 }
1316 }
1317 else /* Stop, if last block downloaded */
1318 {
1319 c = SIFREADW(SIFACL);
1320 c &= (~ACL_CPHALT | ACL_SINTEN);
1321
1322 /* Clear CPHALT and start BUD */
1323 SIFWRITEW(c, SIFACL);
1324 if (fw_entry)
1325 release_firmware(fw_entry);
1326 return (1);
1327 }
1328 } while(count == 0);
1329
1330 if (fw_entry)
1331 release_firmware(fw_entry);
1332 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1333 return (-1);
1334 }
1335
1336 MODULE_FIRMWARE("tms380tr.bin");
1337
1338 /*
1339 * Starts bring up diagnostics of token ring adapter and evaluates
1340 * diagnostic results.
1341 */
1342 static int tms380tr_bringup_diags(struct net_device *dev)
1343 {
1344 int loop_cnt, retry_cnt;
1345 unsigned short Status;
1346
1347 tms380tr_wait(HALF_SECOND);
1348 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1349 tms380tr_wait(HALF_SECOND);
1350
1351 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1352
1353 do {
1354 retry_cnt--;
1355 if(tms380tr_debug > 3)
1356 printk(KERN_DEBUG "BUD-Status: ");
1357 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1358 do { /* Inspect BUD results */
1359 loop_cnt--;
1360 tms380tr_wait(HALF_SECOND);
1361 Status = SIFREADW(SIFSTS);
1362 Status &= STS_MASK;
1363
1364 if(tms380tr_debug > 3)
1365 printk(KERN_DEBUG " %04X\n", Status);
1366 /* BUD successfully completed */
1367 if(Status == STS_INITIALIZE)
1368 return (1);
1369 /* Unrecoverable hardware error, BUD not completed? */
1370 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1371 != (STS_ERROR | STS_TEST)));
1372
1373 /* Error preventing completion of BUD */
1374 if(retry_cnt > 0)
1375 {
1376 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1377 dev->name);
1378 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1379 tms380tr_wait(HALF_SECOND);
1380 }
1381 } while(retry_cnt > 0);
1382
1383 Status = SIFREADW(SIFSTS);
1384
1385 printk(KERN_INFO "%s: Hardware error\n", dev->name);
1386 /* Hardware error occurred! */
1387 Status &= 0x001f;
1388 if (Status & 0x0010)
1389 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1390 else if ((Status & 0x000f) > 6)
1391 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1392 else
1393 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1394
1395 return (-1);
1396 }
1397
1398 /*
1399 * Copy initialisation data to adapter memory, beginning at address
1400 * 1:0A00; Starting DMA test and evaluating result bits.
1401 */
1402 static int tms380tr_init_adapter(struct net_device *dev)
1403 {
1404 struct net_local *tp = netdev_priv(dev);
1405
1406 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1407 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1408 0xC5, 0xD9, 0xC3, 0xD4};
1409 void *ptr = (void *)&tp->ipb;
1410 unsigned short *ipb_ptr = (unsigned short *)ptr;
1411 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1412 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1413 unsigned short Status;
1414 int i, loop_cnt, retry_cnt;
1415
1416 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1417 tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1418 tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1419
1420 if(tms380tr_debug > 3)
1421 {
1422 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1423 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1424 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1425 printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
1426 }
1427 /* Maximum: three initialization retries */
1428 retry_cnt = INIT_MAX_RETRIES;
1429
1430 do {
1431 retry_cnt--;
1432
1433 /* Transfer initialization block */
1434 SIFWRITEW(0x0001, SIFADX);
1435
1436 /* To address 0001:0A00 of adapter RAM */
1437 SIFWRITEW(0x0A00, SIFADD);
1438
1439 /* Write 11 words to adapter RAM */
1440 for(i = 0; i < 11; i++)
1441 SIFWRITEW(ipb_ptr[i], SIFINC);
1442
1443 /* Execute SCB adapter command */
1444 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1445
1446 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1447
1448 /* While remaining retries, no error and not completed */
1449 do {
1450 Status = 0;
1451 loop_cnt--;
1452 tms380tr_wait(HALF_SECOND);
1453
1454 /* Mask interesting status bits */
1455 Status = SIFREADW(SIFSTS);
1456 Status &= STS_MASK;
1457 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0) &&
1458 ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1459
1460 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1461 {
1462 /* Initialization completed without error */
1463 i = 0;
1464 do { /* Test if contents of SCB is valid */
1465 if(SCB_Test[i] != *(cb_ptr + i))
1466 {
1467 printk(KERN_INFO "%s: DMA failed\n", dev->name);
1468 /* DMA data error: wrong data in SCB */
1469 return (-1);
1470 }
1471 i++;
1472 } while(i < 6);
1473
1474 i = 0;
1475 do { /* Test if contents of SSB is valid */
1476 if(SSB_Test[i] != *(sb_ptr + i))
1477 /* DMA data error: wrong data in SSB */
1478 return (-1);
1479 i++;
1480 } while (i < 8);
1481
1482 return (1); /* Adapter successfully initialized */
1483 }
1484 else
1485 {
1486 if((Status & STS_ERROR) != 0)
1487 {
1488 /* Initialization error occurred */
1489 Status = SIFREADW(SIFSTS);
1490 Status &= STS_ERROR_MASK;
1491 /* ShowInitialisationErrorCode(Status); */
1492 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1493 return (-1); /* Unrecoverable error */
1494 }
1495 else
1496 {
1497 if(retry_cnt > 0)
1498 {
1499 /* Reset adapter and try init again */
1500 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1501 tms380tr_wait(HALF_SECOND);
1502 }
1503 }
1504 }
1505 } while(retry_cnt > 0);
1506
1507 printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1508 return (-1);
1509 }
1510
1511 /*
1512 * Check for outstanding commands in command queue and tries to execute
1513 * command immediately. Corresponding command flag in command queue is cleared.
1514 */
1515 static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1516 {
1517 struct net_local *tp = netdev_priv(dev);
1518 unsigned long Addr = 0;
1519
1520 if(tp->CMDqueue == 0)
1521 return; /* No command execution */
1522
1523 /* If SCB in use: no command */
1524 if(tp->ScbInUse == 1)
1525 return;
1526
1527 /* Check if adapter is opened, avoiding COMMAND_REJECT
1528 * interrupt by the adapter!
1529 */
1530 if(tp->AdapterOpenFlag == 0)
1531 {
1532 if(tp->CMDqueue & OC_OPEN)
1533 {
1534 /* Execute OPEN command */
1535 tp->CMDqueue ^= OC_OPEN;
1536
1537 Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1538 tp->scb.Parm[0] = LOWORD(Addr);
1539 tp->scb.Parm[1] = HIWORD(Addr);
1540 tp->scb.CMD = OPEN;
1541 }
1542 else
1543 /* No OPEN command queued, but adapter closed. Note:
1544 * We'll try to re-open the adapter in DriverPoll()
1545 */
1546 return; /* No adapter command issued */
1547 }
1548 else
1549 {
1550 /* Adapter is open; evaluate command queue: try to execute
1551 * outstanding commands (depending on priority!) CLOSE
1552 * command queued
1553 */
1554 if(tp->CMDqueue & OC_CLOSE)
1555 {
1556 tp->CMDqueue ^= OC_CLOSE;
1557 tp->AdapterOpenFlag = 0;
1558 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1559 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1560 tp->scb.CMD = CLOSE;
1561 if(!tp->HaltInProgress)
1562 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1563 else
1564 tp->CMDqueue = 0; /* no more commands */
1565 }
1566 else
1567 {
1568 if(tp->CMDqueue & OC_RECEIVE)
1569 {
1570 tp->CMDqueue ^= OC_RECEIVE;
1571 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1572 tp->scb.Parm[0] = LOWORD(Addr);
1573 tp->scb.Parm[1] = HIWORD(Addr);
1574 tp->scb.CMD = RECEIVE;
1575 }
1576 else
1577 {
1578 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1579 {
1580 /* NOTE: TRANSMIT.HALT must be checked
1581 * before TRANSMIT.
1582 */
1583 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1584 tp->scb.CMD = TRANSMIT_HALT;
1585
1586 /* Parm[0] and Parm[1] are ignored
1587 * but should be set to zero!
1588 */
1589 tp->scb.Parm[0] = 0;
1590 tp->scb.Parm[1] = 0;
1591 }
1592 else
1593 {
1594 if(tp->CMDqueue & OC_TRANSMIT)
1595 {
1596 /* NOTE: TRANSMIT must be
1597 * checked after TRANSMIT.HALT
1598 */
1599 if(tp->TransmitCommandActive)
1600 {
1601 if(!tp->TransmitHaltScheduled)
1602 {
1603 tp->TransmitHaltScheduled = 1;
1604 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1605 }
1606 tp->TransmitCommandActive = 0;
1607 return;
1608 }
1609
1610 tp->CMDqueue ^= OC_TRANSMIT;
1611 tms380tr_cancel_tx_queue(tp);
1612 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1613 tp->scb.Parm[0] = LOWORD(Addr);
1614 tp->scb.Parm[1] = HIWORD(Addr);
1615 tp->scb.CMD = TRANSMIT;
1616 tp->TransmitCommandActive = 1;
1617 }
1618 else
1619 {
1620 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1621 {
1622 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1623 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1624 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1625 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1626 tp->scb.CMD = MODIFY_OPEN_PARMS;
1627 }
1628 else
1629 {
1630 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1631 {
1632 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1633 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1634 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1635 tp->scb.CMD = SET_FUNCT_ADDR;
1636 }
1637 else
1638 {
1639 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1640 {
1641 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1642 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1643 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1644 tp->scb.CMD = SET_GROUP_ADDR;
1645 }
1646 else
1647 {
1648 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1649 {
1650 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1651 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1652 tp->scb.Parm[0] = LOWORD(Addr);
1653 tp->scb.Parm[1] = HIWORD(Addr);
1654 tp->scb.CMD = READ_ERROR_LOG;
1655 }
1656 else
1657 {
1658 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1659 tp->CMDqueue = 0;
1660 return;
1661 }
1662 }
1663 }
1664 }
1665 }
1666 }
1667 }
1668 }
1669 }
1670
1671 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1672
1673 /* Execute SCB and generate IRQ when done. */
1674 tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1675 }
1676
1677 /*
1678 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1679 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1680 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1681 * circuit fault on the lobe is detected; remove MAC frame received;
1682 * error counter overflow (255); opened adapter is the only station in ring.
1683 * After some of the IRQs the adapter is closed!
1684 */
1685 static void tms380tr_ring_status_irq(struct net_device *dev)
1686 {
1687 struct net_local *tp = netdev_priv(dev);
1688
1689 tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1690
1691 /* First: fill up statistics */
1692 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1693 {
1694 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1695 tp->MacStat.line_errors++;
1696 }
1697
1698 /* Adapter is closed, but initialized */
1699 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1700 {
1701 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1702 dev->name);
1703 tp->MacStat.line_errors++;
1704 }
1705
1706 if(tp->ssb.Parm[0] & RING_RECOVERY)
1707 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1708
1709 /* Counter overflow: read error log */
1710 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1711 {
1712 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1713 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1714 }
1715
1716 /* Adapter is closed, but initialized */
1717 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1718 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1719 dev->name);
1720
1721 /* Adapter is closed, but initialized */
1722 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1723 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1724 dev->name);
1725
1726 if(tp->ssb.Parm[0] & HARD_ERROR)
1727 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1728
1729 if(tp->ssb.Parm[0] & SOFT_ERROR)
1730 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1731
1732 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1733 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1734
1735 if(tp->ssb.Parm[0] & SINGLE_STATION)
1736 printk(KERN_INFO "%s: Single Station\n", dev->name);
1737
1738 /* Check if adapter has been closed */
1739 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1740 {
1741 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1742 "CurrentRingStat %x\n",
1743 dev->name, tp->CurrentRingStatus);
1744 tp->AdapterOpenFlag = 0;
1745 tms380tr_open_adapter(dev);
1746 }
1747 }
1748
1749 /*
1750 * Issued if adapter has encountered an unrecoverable hardware
1751 * or software error.
1752 */
1753 static void tms380tr_chk_irq(struct net_device *dev)
1754 {
1755 int i;
1756 unsigned short AdapterCheckBlock[4];
1757 struct net_local *tp = netdev_priv(dev);
1758
1759 tp->AdapterOpenFlag = 0; /* Adapter closed now */
1760
1761 /* Page number of adapter memory */
1762 SIFWRITEW(0x0001, SIFADX);
1763 /* Address offset */
1764 SIFWRITEW(CHECKADDR, SIFADR);
1765
1766 /* Reading 8 byte adapter check block. */
1767 for(i = 0; i < 4; i++)
1768 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1769
1770 if(tms380tr_debug > 3)
1771 {
1772 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1773 for (i = 0; i < 4; i++)
1774 printk("%04X", AdapterCheckBlock[i]);
1775 printk("\n");
1776 }
1777
1778 switch(AdapterCheckBlock[0])
1779 {
1780 case DIO_PARITY:
1781 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1782 break;
1783
1784 case DMA_READ_ABORT:
1785 printk(KERN_INFO "%s DMA read operation aborted:\n",
1786 dev->name);
1787 switch (AdapterCheckBlock[1])
1788 {
1789 case 0:
1790 printk(KERN_INFO "Timeout\n");
1791 printk(KERN_INFO "Address: %04X %04X\n",
1792 AdapterCheckBlock[2],
1793 AdapterCheckBlock[3]);
1794 break;
1795
1796 case 1:
1797 printk(KERN_INFO "Parity error\n");
1798 printk(KERN_INFO "Address: %04X %04X\n",
1799 AdapterCheckBlock[2],
1800 AdapterCheckBlock[3]);
1801 break;
1802
1803 case 2:
1804 printk(KERN_INFO "Bus error\n");
1805 printk(KERN_INFO "Address: %04X %04X\n",
1806 AdapterCheckBlock[2],
1807 AdapterCheckBlock[3]);
1808 break;
1809
1810 default:
1811 printk(KERN_INFO "Unknown error.\n");
1812 break;
1813 }
1814 break;
1815
1816 case DMA_WRITE_ABORT:
1817 printk(KERN_INFO "%s: DMA write operation aborted:\n",
1818 dev->name);
1819 switch (AdapterCheckBlock[1])
1820 {
1821 case 0:
1822 printk(KERN_INFO "Timeout\n");
1823 printk(KERN_INFO "Address: %04X %04X\n",
1824 AdapterCheckBlock[2],
1825 AdapterCheckBlock[3]);
1826 break;
1827
1828 case 1:
1829 printk(KERN_INFO "Parity error\n");
1830 printk(KERN_INFO "Address: %04X %04X\n",
1831 AdapterCheckBlock[2],
1832 AdapterCheckBlock[3]);
1833 break;
1834
1835 case 2:
1836 printk(KERN_INFO "Bus error\n");
1837 printk(KERN_INFO "Address: %04X %04X\n",
1838 AdapterCheckBlock[2],
1839 AdapterCheckBlock[3]);
1840 break;
1841
1842 default:
1843 printk(KERN_INFO "Unknown error.\n");
1844 break;
1845 }
1846 break;
1847
1848 case ILLEGAL_OP_CODE:
1849 printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1850 dev->name);
1851 /* Parm[0-3]: adapter internal register R13-R15 */
1852 break;
1853
1854 case PARITY_ERRORS:
1855 printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1856 dev->name);
1857 /* Parm[0-3]: adapter internal register R13-R15 */
1858 break;
1859
1860 case RAM_DATA_ERROR:
1861 printk(KERN_INFO "%s: RAM data error\n", dev->name);
1862 /* Parm[0-1]: MSW/LSW address of RAM location. */
1863 break;
1864
1865 case RAM_PARITY_ERROR:
1866 printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1867 /* Parm[0-1]: MSW/LSW address of RAM location. */
1868 break;
1869
1870 case RING_UNDERRUN:
1871 printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1872 dev->name);
1873 break;
1874
1875 case INVALID_IRQ:
1876 printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1877 dev->name);
1878 /* Parm[0-3]: adapter internal register R13-R15 */
1879 break;
1880
1881 case INVALID_ERROR_IRQ:
1882 printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1883 dev->name);
1884 /* Parm[0-3]: adapter internal register R13-R15 */
1885 break;
1886
1887 case INVALID_XOP:
1888 printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1889 dev->name);
1890 /* Parm[0-3]: adapter internal register R13-R15 */
1891 break;
1892
1893 default:
1894 printk(KERN_INFO "%s: Unknown status", dev->name);
1895 break;
1896 }
1897
1898 if(tms380tr_chipset_init(dev) == 1)
1899 {
1900 /* Restart of firmware successful */
1901 tp->AdapterOpenFlag = 1;
1902 }
1903 }
1904
1905 /*
1906 * Internal adapter pointer to RAM data are copied from adapter into
1907 * host system.
1908 */
1909 static int tms380tr_read_ptr(struct net_device *dev)
1910 {
1911 struct net_local *tp = netdev_priv(dev);
1912 unsigned short adapterram;
1913
1914 tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1915 ADAPTER_INT_PTRS, 16);
1916 tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1917 cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1918 return be16_to_cpu(adapterram);
1919 }
1920
1921 /*
1922 * Reads a number of bytes from adapter to system memory.
1923 */
1924 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1925 unsigned short Address, int Length)
1926 {
1927 int i;
1928 unsigned short old_sifadx, old_sifadr, InWord;
1929
1930 /* Save the current values */
1931 old_sifadx = SIFREADW(SIFADX);
1932 old_sifadr = SIFREADW(SIFADR);
1933
1934 /* Page number of adapter memory */
1935 SIFWRITEW(0x0001, SIFADX);
1936 /* Address offset in adapter RAM */
1937 SIFWRITEW(Address, SIFADR);
1938
1939 /* Copy len byte from adapter memory to system data area. */
1940 i = 0;
1941 for(;;)
1942 {
1943 InWord = SIFREADW(SIFINC);
1944
1945 *(Data + i) = HIBYTE(InWord); /* Write first byte */
1946 if(++i == Length) /* All is done break */
1947 break;
1948
1949 *(Data + i) = LOBYTE(InWord); /* Write second byte */
1950 if (++i == Length) /* All is done break */
1951 break;
1952 }
1953
1954 /* Restore original values */
1955 SIFWRITEW(old_sifadx, SIFADX);
1956 SIFWRITEW(old_sifadr, SIFADR);
1957 }
1958
1959 /*
1960 * Cancel all queued packets in the transmission queue.
1961 */
1962 static void tms380tr_cancel_tx_queue(struct net_local* tp)
1963 {
1964 TPL *tpl;
1965
1966 /*
1967 * NOTE: There must not be an active TRANSMIT command pending, when
1968 * this function is called.
1969 */
1970 if(tp->TransmitCommandActive)
1971 return;
1972
1973 for(;;)
1974 {
1975 tpl = tp->TplBusy;
1976 if(!tpl->BusyFlag)
1977 break;
1978 /* "Remove" TPL from busy list. */
1979 tp->TplBusy = tpl->NextTPLPtr;
1980 tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
1981 tpl->BusyFlag = 0; /* "free" TPL */
1982
1983 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
1984 if (tpl->DMABuff)
1985 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
1986 dev_kfree_skb_any(tpl->Skb);
1987 }
1988 }
1989
1990 /*
1991 * This function is called whenever a transmit interrupt is generated by the
1992 * adapter. For a command complete interrupt, it is checked if we have to
1993 * issue a new transmit command or not.
1994 */
1995 static void tms380tr_tx_status_irq(struct net_device *dev)
1996 {
1997 struct net_local *tp = netdev_priv(dev);
1998 unsigned char HighByte, HighAc, LowAc;
1999 TPL *tpl;
2000
2001 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2002 * available, because the CLEAR SSB command has already been issued.
2003 *
2004 * Process all complete transmissions.
2005 */
2006
2007 for(;;)
2008 {
2009 tpl = tp->TplBusy;
2010 if(!tpl->BusyFlag || (tpl->Status
2011 & (TX_VALID | TX_FRAME_COMPLETE))
2012 != TX_FRAME_COMPLETE)
2013 {
2014 break;
2015 }
2016
2017 /* "Remove" TPL from busy list. */
2018 tp->TplBusy = tpl->NextTPLPtr ;
2019
2020 /* Check the transmit status field only for directed frames*/
2021 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2022 {
2023 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2024 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2025 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2026
2027 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2028 {
2029 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2030 dev->name,
2031 *(unsigned long *)&tpl->MData[2+2]);
2032 }
2033 else
2034 {
2035 if(tms380tr_debug > 3)
2036 printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2037 dev->name);
2038 }
2039 }
2040 else
2041 {
2042 if(!DIRECTED_FRAME(tpl))
2043 {
2044 if(tms380tr_debug > 3)
2045 printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2046 dev->name);
2047 }
2048 }
2049
2050 tp->MacStat.tx_packets++;
2051 if (tpl->DMABuff)
2052 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2053 dev_kfree_skb_irq(tpl->Skb);
2054 tpl->BusyFlag = 0; /* "free" TPL */
2055 }
2056
2057 if(!tp->TplFree->NextTPLPtr->BusyFlag)
2058 netif_wake_queue(dev);
2059 }
2060
2061 /*
2062 * Called if a frame receive interrupt is generated by the adapter.
2063 * Check if the frame is valid and indicate it to system.
2064 */
2065 static void tms380tr_rcv_status_irq(struct net_device *dev)
2066 {
2067 struct net_local *tp = netdev_priv(dev);
2068 unsigned char *ReceiveDataPtr;
2069 struct sk_buff *skb;
2070 unsigned int Length, Length2;
2071 RPL *rpl;
2072 RPL *SaveHead;
2073 dma_addr_t dmabuf;
2074
2075 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2076 * available, because the CLEAR SSB command has already been issued.
2077 *
2078 * Process all complete receives.
2079 */
2080
2081 for(;;)
2082 {
2083 rpl = tp->RplHead;
2084 if(rpl->Status & RX_VALID)
2085 break; /* RPL still in use by adapter */
2086
2087 /* Forward RPLHead pointer to next list. */
2088 SaveHead = tp->RplHead;
2089 tp->RplHead = rpl->NextRPLPtr;
2090
2091 /* Get the frame size (Byte swap for Intel).
2092 * Do this early (see workaround comment below)
2093 */
2094 Length = be16_to_cpu(rpl->FrameSize);
2095
2096 /* Check if the Frame_Start, Frame_End and
2097 * Frame_Complete bits are set.
2098 */
2099 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2100 == VALID_SINGLE_BUFFER_FRAME)
2101 {
2102 ReceiveDataPtr = rpl->MData;
2103
2104 /* Workaround for delayed write of FrameSize on ISA
2105 * (FrameSize is false but valid-bit is reset)
2106 * Frame size is set to zero when the RPL is freed.
2107 * Length2 is there because there have also been
2108 * cases where the FrameSize was partially written
2109 */
2110 Length2 = be16_to_cpu(rpl->FrameSize);
2111
2112 if(Length == 0 || Length != Length2)
2113 {
2114 tp->RplHead = SaveHead;
2115 break; /* Return to tms380tr_interrupt */
2116 }
2117 tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2118
2119 if(tms380tr_debug > 3)
2120 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2121 dev->name, Length, Length);
2122
2123 /* Indicate the received frame to system the
2124 * adapter does the Source-Routing padding for
2125 * us. See: OpenOptions in tms380tr_init_opb()
2126 */
2127 skb = rpl->Skb;
2128 if(rpl->SkbStat == SKB_UNAVAILABLE)
2129 {
2130 /* Try again to allocate skb */
2131 skb = dev_alloc_skb(tp->MaxPacketSize);
2132 if(skb == NULL)
2133 {
2134 /* Update Stats ?? */
2135 }
2136 else
2137 {
2138 skb_put(skb, tp->MaxPacketSize);
2139 rpl->SkbStat = SKB_DATA_COPY;
2140 ReceiveDataPtr = rpl->MData;
2141 }
2142 }
2143
2144 if(skb && (rpl->SkbStat == SKB_DATA_COPY ||
2145 rpl->SkbStat == SKB_DMA_DIRECT))
2146 {
2147 if(rpl->SkbStat == SKB_DATA_COPY)
2148 skb_copy_to_linear_data(skb, ReceiveDataPtr,
2149 Length);
2150
2151 /* Deliver frame to system */
2152 rpl->Skb = NULL;
2153 skb_trim(skb,Length);
2154 skb->protocol = tr_type_trans(skb,dev);
2155 netif_rx(skb);
2156 }
2157 }
2158 else /* Invalid frame */
2159 {
2160 if(rpl->Skb != NULL)
2161 dev_kfree_skb_irq(rpl->Skb);
2162
2163 /* Skip list. */
2164 if(rpl->Status & RX_START_FRAME)
2165 /* Frame start bit is set -> overflow. */
2166 tp->MacStat.rx_errors++;
2167 }
2168 if (rpl->DMABuff)
2169 dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE);
2170 rpl->DMABuff = 0;
2171
2172 /* Allocate new skb for rpl */
2173 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2174 /* skb == NULL ? then use local buffer */
2175 if(rpl->Skb == NULL)
2176 {
2177 rpl->SkbStat = SKB_UNAVAILABLE;
2178 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2179 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2180 }
2181 else /* skb != NULL */
2182 {
2183 rpl->Skb->dev = dev;
2184 skb_put(rpl->Skb, tp->MaxPacketSize);
2185
2186 /* Data unreachable for DMA ? then use local buffer */
2187 dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
2188 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2189 {
2190 rpl->SkbStat = SKB_DATA_COPY;
2191 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2192 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2193 }
2194 else
2195 {
2196 /* DMA directly in skb->data */
2197 rpl->SkbStat = SKB_DMA_DIRECT;
2198 rpl->FragList[0].DataAddr = htonl(dmabuf);
2199 rpl->MData = rpl->Skb->data;
2200 rpl->DMABuff = dmabuf;
2201 }
2202 }
2203
2204 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2205 rpl->FrameSize = 0;
2206
2207 /* Pass the last RPL back to the adapter */
2208 tp->RplTail->FrameSize = 0;
2209
2210 /* Reset the CSTAT field in the list. */
2211 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2212
2213 /* Current RPL becomes last one in list. */
2214 tp->RplTail = tp->RplTail->NextRPLPtr;
2215
2216 /* Inform adapter about RPL valid. */
2217 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2218 }
2219 }
2220
2221 /*
2222 * This function should be used whenever the status of any RPL must be
2223 * modified by the driver, because the compiler may otherwise change the
2224 * order of instructions such that writing the RPL status may be executed
2225 * at an undesirable time. When this function is used, the status is
2226 * always written when the function is called.
2227 */
2228 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2229 {
2230 rpl->Status = Status;
2231 }
2232
2233 /*
2234 * The function updates the statistic counters in mac->MacStat.
2235 * It differtiates between directed and broadcast/multicast ( ==functional)
2236 * frames.
2237 */
2238 static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2239 unsigned int Length)
2240 {
2241 tp->MacStat.rx_packets++;
2242 tp->MacStat.rx_bytes += Length;
2243
2244 /* Test functional bit */
2245 if(DataPtr[2] & GROUP_BIT)
2246 tp->MacStat.multicast++;
2247 }
2248
2249 static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2250 {
2251 struct net_local *tp = netdev_priv(dev);
2252 struct sockaddr *saddr = addr;
2253
2254 if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2255 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2256 return -EIO;
2257 }
2258 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2259 return 0;
2260 }
2261
2262 #if TMS380TR_DEBUG > 0
2263 /*
2264 * Dump Packet (data)
2265 */
2266 static void tms380tr_dump(unsigned char *Data, int length)
2267 {
2268 int i, j;
2269
2270 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2271 {
2272 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2273 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2274 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2275 }
2276 }
2277 #endif
2278
2279 void tmsdev_term(struct net_device *dev)
2280 {
2281 struct net_local *tp;
2282
2283 tp = netdev_priv(dev);
2284 dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2285 DMA_BIDIRECTIONAL);
2286 }
2287
2288 const struct net_device_ops tms380tr_netdev_ops = {
2289 .ndo_open = tms380tr_open,
2290 .ndo_stop = tms380tr_close,
2291 .ndo_start_xmit = tms380tr_send_packet,
2292 .ndo_tx_timeout = tms380tr_timeout,
2293 .ndo_get_stats = tms380tr_get_stats,
2294 .ndo_set_multicast_list = tms380tr_set_multicast_list,
2295 .ndo_set_mac_address = tms380tr_set_mac_address,
2296 };
2297 EXPORT_SYMBOL(tms380tr_netdev_ops);
2298
2299 int tmsdev_init(struct net_device *dev, struct device *pdev)
2300 {
2301 struct net_local *tms_local;
2302
2303 memset(netdev_priv(dev), 0, sizeof(struct net_local));
2304 tms_local = netdev_priv(dev);
2305 init_waitqueue_head(&tms_local->wait_for_tok_int);
2306 if (pdev->dma_mask)
2307 tms_local->dmalimit = *pdev->dma_mask;
2308 else
2309 return -ENOMEM;
2310 tms_local->pdev = pdev;
2311 tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2312 sizeof(struct net_local), DMA_BIDIRECTIONAL);
2313 if (tms_local->dmabuffer + sizeof(struct net_local) >
2314 tms_local->dmalimit)
2315 {
2316 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2317 dev->name);
2318 tmsdev_term(dev);
2319 return -ENOMEM;
2320 }
2321
2322 dev->netdev_ops = &tms380tr_netdev_ops;
2323 dev->watchdog_timeo = HZ;
2324
2325 return 0;
2326 }
2327
2328 EXPORT_SYMBOL(tms380tr_open);
2329 EXPORT_SYMBOL(tms380tr_close);
2330 EXPORT_SYMBOL(tms380tr_interrupt);
2331 EXPORT_SYMBOL(tmsdev_init);
2332 EXPORT_SYMBOL(tmsdev_term);
2333 EXPORT_SYMBOL(tms380tr_wait);
2334
2335 #ifdef MODULE
2336
2337 static struct module *TMS380_module = NULL;
2338
2339 int init_module(void)
2340 {
2341 printk(KERN_DEBUG "%s", version);
2342
2343 TMS380_module = &__this_module;
2344 return 0;
2345 }
2346
2347 void cleanup_module(void)
2348 {
2349 TMS380_module = NULL;
2350 }
2351 #endif
2352
2353 MODULE_LICENSE("GPL");
2354
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