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[deliverable/linux.git] / drivers / net / tokenring / tms380tr.c
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1da177e4
LT		 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
726a6459 33 * AF Adam Fritzler
1da177e4
LT		 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.
504ff16c 65 * 22-Jul-05 JF Converted to dma-mapping.
1da177e4
LT		 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
77static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
78#endif
79
80#include <linux/module.h>
81#include <linux/kernel.h>
82#include <linux/types.h>
83#include <linux/fcntl.h>
84#include <linux/interrupt.h>
85#include <linux/ptrace.h>
86#include <linux/ioport.h>
87#include <linux/in.h>
88#include <linux/slab.h>
89#include <linux/string.h>
90#include <linux/time.h>
91#include <linux/errno.h>
92#include <linux/init.h>
504ff16c 93#include <linux/dma-mapping.h>
1da177e4
LT		 94#include <linux/delay.h>
95#include <linux/netdevice.h>
96#include <linux/etherdevice.h>
97#include <linux/skbuff.h>
98#include <linux/trdevice.h>
99#include <linux/firmware.h>
100#include <linux/bitops.h>
101
102#include <asm/system.h>
103#include <asm/io.h>
104#include <asm/dma.h>
105#include <asm/irq.h>
106#include <asm/uaccess.h>
107
108#include "tms380tr.h" /* Our Stuff */
109
110/* Use 0 for production, 1 for verification, 2 for debug, and
111 * 3 for very verbose debug.
112 */
113#ifndef TMS380TR_DEBUG
114#define TMS380TR_DEBUG 0
115#endif
116static unsigned int tms380tr_debug = TMS380TR_DEBUG;
117
1da177e4
LT		 118/* Index to functions, as function prototypes.
119 * Alphabetical by function name.
120 */
121
122/* "A" */
123/* "B" */
124static int tms380tr_bringup_diags(struct net_device *dev);
125/* "C" */
126static void tms380tr_cancel_tx_queue(struct net_local* tp);
127static int tms380tr_chipset_init(struct net_device *dev);
128static void tms380tr_chk_irq(struct net_device *dev);
129static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
130static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
131static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
132int tms380tr_close(struct net_device *dev);
133static void tms380tr_cmd_status_irq(struct net_device *dev);
134/* "D" */
135static void tms380tr_disable_interrupts(struct net_device *dev);
136#if TMS380TR_DEBUG > 0
137static void tms380tr_dump(unsigned char *Data, int length);
138#endif
139/* "E" */
140static void tms380tr_enable_interrupts(struct net_device *dev);
141static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
142static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
143/* "F" */
144/* "G" */
145static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
146/* "H" */
61a84108
SH		 147static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
148 struct net_device *dev);
1da177e4
LT		 149/* "I" */
150static int tms380tr_init_adapter(struct net_device *dev);
151static void tms380tr_init_ipb(struct net_local *tp);
152static void tms380tr_init_net_local(struct net_device *dev);
153static void tms380tr_init_opb(struct net_device *dev);
154/* "M" */
155/* "O" */
156int tms380tr_open(struct net_device *dev);
157static void tms380tr_open_adapter(struct net_device *dev);
158/* "P" */
159/* "R" */
160static void tms380tr_rcv_status_irq(struct net_device *dev);
161static int tms380tr_read_ptr(struct net_device *dev);
162static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
163 unsigned short Address, int Length);
164static int tms380tr_reset_adapter(struct net_device *dev);
165static void tms380tr_reset_interrupt(struct net_device *dev);
166static void tms380tr_ring_status_irq(struct net_device *dev);
167/* "S" */
61a84108
SH		 168static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
169 struct net_device *dev);
1da177e4
LT		 170static void tms380tr_set_multicast_list(struct net_device *dev);
171static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
172/* "T" */
173static void tms380tr_timer_chk(unsigned long data);
174static void tms380tr_timer_end_wait(unsigned long data);
175static void tms380tr_tx_status_irq(struct net_device *dev);
176/* "U" */
177static void tms380tr_update_rcv_stats(struct net_local *tp,
178 unsigned char DataPtr[], unsigned int Length);
179/* "W" */
180void tms380tr_wait(unsigned long time);
181static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
182static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
183
8f15ea42
WC		 184#define SIFREADB(reg) \
185 (((struct net_local *)netdev_priv(dev))->sifreadb(dev, reg))
186#define SIFWRITEB(val, reg) \
187 (((struct net_local *)netdev_priv(dev))->sifwriteb(dev, val, reg))
188#define SIFREADW(reg) \
189 (((struct net_local *)netdev_priv(dev))->sifreadw(dev, reg))
190#define SIFWRITEW(val, reg) \
191 (((struct net_local *)netdev_priv(dev))->sifwritew(dev, val, reg))
1da177e4
LT		 192
193
194
195#if 0 /* TMS380TR_DEBUG > 0 */
196static int madgemc_sifprobe(struct net_device *dev)
197{
198 unsigned char old, chk1, chk2;
199
200 old = SIFREADB(SIFADR); /* Get the old SIFADR value */
201
202 chk1 = 0; /* Begin with check value 0 */
203 do {
204 madgemc_setregpage(dev, 0);
205 /* Write new SIFADR value */
206 SIFWRITEB(chk1, SIFADR);
207 chk2 = SIFREADB(SIFADR);
208 if (chk2 != chk1)
209 return -1;
210
211 madgemc_setregpage(dev, 1);
212 /* Read, invert and write */
213 chk2 = SIFREADB(SIFADD);
214 if (chk2 != chk1)
215 return -1;
216
217 madgemc_setregpage(dev, 0);
218 chk2 ^= 0x0FE;
219 SIFWRITEB(chk2, SIFADR);
220
221 /* Read, invert and compare */
222 madgemc_setregpage(dev, 1);
223 chk2 = SIFREADB(SIFADD);
224 madgemc_setregpage(dev, 0);
225 chk2 ^= 0x0FE;
226
227 if(chk1 != chk2)
228 return (-1); /* No adapter */
229 chk1 -= 2;
230 } while(chk1 != 0); /* Repeat 128 times (all byte values) */
231
232 madgemc_setregpage(dev, 0); /* sanity */
233 /* Restore the SIFADR value */
234 SIFWRITEB(old, SIFADR);
235
236 return (0);
237}
238#endif
239
240/*
241 * Open/initialize the board. This is called sometime after
242 * booting when the 'ifconfig' program is run.
243 *
244 * This routine should set everything up anew at each open, even
245 * registers that "should" only need to be set once at boot, so that
246 * there is non-reboot way to recover if something goes wrong.
247 */
248int tms380tr_open(struct net_device *dev)
249{
250 struct net_local *tp = netdev_priv(dev);
251 int err;
252
253 /* init the spinlock */
254 spin_lock_init(&tp->lock);
255 init_timer(&tp->timer);
256
257 /* Reset the hardware here. Don't forget to set the station address. */
258
259#ifdef CONFIG_ISA
260 if(dev->dma > 0)
261 {
262 unsigned long flags=claim_dma_lock();
263 disable_dma(dev->dma);
264 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
265 enable_dma(dev->dma);
266 release_dma_lock(flags);
267 }
268#endif
269
270 err = tms380tr_chipset_init(dev);
271 if(err)
272 {
273 printk(KERN_INFO "%s: Chipset initialization error\n",
274 dev->name);
275 return (-1);
276 }
277
278 tp->timer.expires = jiffies + 30*HZ;
279 tp->timer.function = tms380tr_timer_end_wait;
280 tp->timer.data = (unsigned long)dev;
281 add_timer(&tp->timer);
282
283 printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
284 dev->name, tms380tr_read_ptr(dev));
285
286 tms380tr_enable_interrupts(dev);
287 tms380tr_open_adapter(dev);
288
289 netif_start_queue(dev);
290
291 /* Wait for interrupt from hardware. If interrupt does not come,
292 * there will be a timeout from the timer.
293 */
294 tp->Sleeping = 1;
295 interruptible_sleep_on(&tp->wait_for_tok_int);
296 del_timer(&tp->timer);
297
298 /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
299 if(tp->AdapterVirtOpenFlag == 0)
300 {
301 tms380tr_disable_interrupts(dev);
302 return (-1);
303 }
304
305 tp->StartTime = jiffies;
306
307 /* Start function control timer */
308 tp->timer.expires = jiffies + 2*HZ;
309 tp->timer.function = tms380tr_timer_chk;
310 tp->timer.data = (unsigned long)dev;
311 add_timer(&tp->timer);
312
313 return (0);
314}
315
316/*
317 * Timeout function while waiting for event
318 */
319static void tms380tr_timer_end_wait(unsigned long data)
320{
321 struct net_device *dev = (struct net_device*)data;
322 struct net_local *tp = netdev_priv(dev);
323
324 if(tp->Sleeping)
325 {
326 tp->Sleeping = 0;
327 wake_up_interruptible(&tp->wait_for_tok_int);
328 }
329
330 return;
331}
332
333/*
334 * Initialize the chipset
335 */
336static int tms380tr_chipset_init(struct net_device *dev)
337{
338 struct net_local *tp = netdev_priv(dev);
339 int err;
340
341 tms380tr_init_ipb(tp);
342 tms380tr_init_opb(dev);
343 tms380tr_init_net_local(dev);
344
345 if(tms380tr_debug > 3)
346 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
347 err = tms380tr_reset_adapter(dev);
348 if(err < 0)
349 return (-1);
350
351 if(tms380tr_debug > 3)
352 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
353 err = tms380tr_bringup_diags(dev);
354 if(err < 0)
355 return (-1);
356
357 if(tms380tr_debug > 3)
358 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
359 err = tms380tr_init_adapter(dev);
360 if(err < 0)
361 return (-1);
362
363 if(tms380tr_debug > 3)
364 printk(KERN_DEBUG "%s: Done!\n", dev->name);
365 return (0);
366}
367
368/*
369 * Initializes the net_local structure.
370 */
371static void tms380tr_init_net_local(struct net_device *dev)
372{
373 struct net_local *tp = netdev_priv(dev);
374 int i;
375 dma_addr_t dmabuf;
376
377 tp->scb.CMD = 0;
378 tp->scb.Parm[0] = 0;
379 tp->scb.Parm[1] = 0;
380
381 tp->ssb.STS = 0;
382 tp->ssb.Parm[0] = 0;
383 tp->ssb.Parm[1] = 0;
384 tp->ssb.Parm[2] = 0;
385
386 tp->CMDqueue = 0;
387
388 tp->AdapterOpenFlag = 0;
389 tp->AdapterVirtOpenFlag = 0;
390 tp->ScbInUse = 0;
391 tp->OpenCommandIssued = 0;
392 tp->ReOpenInProgress = 0;
393 tp->HaltInProgress = 0;
394 tp->TransmitHaltScheduled = 0;
395 tp->LobeWireFaultLogged = 0;
396 tp->LastOpenStatus = 0;
397 tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
398
399 /* Create circular chain of transmit lists */
400 for (i = 0; i < TPL_NUM; i++)
401 {
402 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
403 tp->Tpl[i].Status = 0;
404 tp->Tpl[i].FrameSize = 0;
405 tp->Tpl[i].FragList[0].DataCount = 0;
406 tp->Tpl[i].FragList[0].DataAddr = 0;
407 tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
408 tp->Tpl[i].MData = NULL;
409 tp->Tpl[i].TPLIndex = i;
410 tp->Tpl[i].DMABuff = 0;
411 tp->Tpl[i].BusyFlag = 0;
412 }
413
414 tp->TplFree = tp->TplBusy = &tp->Tpl[0];
415
416 /* Create circular chain of receive lists */
417 for (i = 0; i < RPL_NUM; i++)
418 {
419 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
420 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
421 tp->Rpl[i].FrameSize = 0;
422 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
423
424 /* Alloc skb and point adapter to data area */
425 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
426 tp->Rpl[i].DMABuff = 0;
427
428 /* skb == NULL ? then use local buffer */
429 if(tp->Rpl[i].Skb == NULL)
430 {
431 tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
432 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
433 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
434 }
435 else /* SKB != NULL */
436 {
437 tp->Rpl[i].Skb->dev = dev;
438 skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
439
440 /* data unreachable for DMA ? then use local buffer */
504ff16c 441 dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
1da177e4
LT		 442 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
443 {
444 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
445 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
446 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
447 }
448 else /* DMA directly in skb->data */
449 {
450 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
451 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
452 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
453 tp->Rpl[i].DMABuff = dmabuf;
454 }
455 }
456
457 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
458 tp->Rpl[i].RPLIndex = i;
459 }
460
461 tp->RplHead = &tp->Rpl[0];
462 tp->RplTail = &tp->Rpl[RPL_NUM-1];
463 tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
464
465 return;
466}
467
468/*
469 * Initializes the initialisation parameter block.
470 */
471static void tms380tr_init_ipb(struct net_local *tp)
472{
473 tp->ipb.Init_Options = BURST_MODE;
474 tp->ipb.CMD_Status_IV = 0;
475 tp->ipb.TX_IV = 0;
476 tp->ipb.RX_IV = 0;
477 tp->ipb.Ring_Status_IV = 0;
478 tp->ipb.SCB_Clear_IV = 0;
479 tp->ipb.Adapter_CHK_IV = 0;
480 tp->ipb.RX_Burst_Size = BURST_SIZE;
481 tp->ipb.TX_Burst_Size = BURST_SIZE;
482 tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
483 tp->ipb.SCB_Addr = 0;
484 tp->ipb.SSB_Addr = 0;
485
486 return;
487}
488
489/*
490 * Initializes the open parameter block.
491 */
492static void tms380tr_init_opb(struct net_device *dev)
493{
494 struct net_local *tp;
495 unsigned long Addr;
496 unsigned short RplSize = RPL_SIZE;
497 unsigned short TplSize = TPL_SIZE;
498 unsigned short BufferSize = BUFFER_SIZE;
499 int i;
500
501 tp = netdev_priv(dev);
502
503 tp->ocpl.OPENOptions = 0;
504 tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
505 tp->ocpl.FullDuplex = 0;
506 tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
507
508 /*
509 * Set node address
510 *
511 * We go ahead and put it in the OPB even though on
512 * most of the generic adapters this isn't required.
513 * Its simpler this way. -- ASF
514 */
515 for (i=0;i<6;i++)
516 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
517
518 tp->ocpl.GroupAddr = 0;
519 tp->ocpl.FunctAddr = 0;
520 tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
521 tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
522 tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
523 tp->ocpl.Reserved = 0;
524 tp->ocpl.TXBufMin = TX_BUF_MIN;
525 tp->ocpl.TXBufMax = TX_BUF_MAX;
526
527 Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
528
529 tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
530 tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
531
532 return;
533}
534
535/*
536 * Send OPEN command to adapter
537 */
538static void tms380tr_open_adapter(struct net_device *dev)
539{
540 struct net_local *tp = netdev_priv(dev);
541
542 if(tp->OpenCommandIssued)
543 return;
544
545 tp->OpenCommandIssued = 1;
546 tms380tr_exec_cmd(dev, OC_OPEN);
547
548 return;
549}
550
551/*
552 * Clear the adapter's interrupt flag. Clear system interrupt enable
553 * (SINTEN): disable adapter to system interrupts.
554 */
555static void tms380tr_disable_interrupts(struct net_device *dev)
556{
557 SIFWRITEB(0, SIFACL);
558
559 return;
560}
561
562/*
563 * Set the adapter's interrupt flag. Set system interrupt enable
564 * (SINTEN): enable adapter to system interrupts.
565 */
566static void tms380tr_enable_interrupts(struct net_device *dev)
567{
568 SIFWRITEB(ACL_SINTEN, SIFACL);
569
570 return;
571}
572
573/*
574 * Put command in command queue, try to execute it.
575 */
576static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
577{
578 struct net_local *tp = netdev_priv(dev);
579
580 tp->CMDqueue |= Command;
581 tms380tr_chk_outstanding_cmds(dev);
582
583 return;
584}
585
586static void tms380tr_timeout(struct net_device *dev)
587{
588 /*
589 * If we get here, some higher level has decided we are broken.
590 * There should really be a "kick me" function call instead.
591 *
592 * Resetting the token ring adapter takes a long time so just
593 * fake transmission time and go on trying. Our own timeout
594 * routine is in tms380tr_timer_chk()
595 */
596 dev->trans_start = jiffies;
597 netif_wake_queue(dev);
598}
599
600/*
601 * Gets skb from system, queues it and checks if it can be sent
602 */
61a84108
SH		 603static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
604 struct net_device *dev)
1da177e4
LT		 605{
606 struct net_local *tp = netdev_priv(dev);
61a84108 607 netdev_tx_t rc;
1da177e4 608
61a84108 609 rc = tms380tr_hardware_send_packet(skb, dev);
1da177e4
LT		 610 if(tp->TplFree->NextTPLPtr->BusyFlag)
611 netif_stop_queue(dev);
61a84108 612 return rc;
1da177e4
LT		 613}
614
615/*
616 * Move frames into adapter tx queue
617 */
61a84108
SH		 618static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
619 struct net_device *dev)
1da177e4
LT		 620{
621 TPL *tpl;
622 short length;
623 unsigned char *buf;
624 unsigned long flags;
625 int i;
626 dma_addr_t dmabuf, newbuf;
627 struct net_local *tp = netdev_priv(dev);
628
629 /* Try to get a free TPL from the chain.
630 *
631 * NOTE: We *must* always leave one unused TPL in the chain,
632 * because otherwise the adapter might send frames twice.
633 */
634 spin_lock_irqsave(&tp->lock, flags);
635 if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
636 if (tms380tr_debug > 0)
637 printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
638 spin_unlock_irqrestore(&tp->lock, flags);
5b548140 639 return NETDEV_TX_BUSY;
1da177e4
LT		 640 }
641
642 dmabuf = 0;
643
644 /* Is buffer reachable for Busmaster-DMA? */
645
646 length = skb->len;
504ff16c 647 dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE);
1da177e4
LT		 648 if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
649 /* Copy frame to local buffer */
504ff16c 650 dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE);
1da177e4
LT		 651 dmabuf = 0;
652 i = tp->TplFree->TPLIndex;
653 buf = tp->LocalTxBuffers[i];
d626f62b 654 skb_copy_from_linear_data(skb, buf, length);
1da177e4
LT		 655 newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
656 }
657 else {
658 /* Send direct from skb->data */
659 newbuf = dmabuf;
660 buf = skb->data;
661 }
662 /* Source address in packet? */
663 tms380tr_chk_src_addr(buf, dev->dev_addr);
664 tp->LastSendTime = jiffies;
665 tpl = tp->TplFree; /* Get the "free" TPL */
666 tpl->BusyFlag = 1; /* Mark TPL as busy */
667 tp->TplFree = tpl->NextTPLPtr;
668
669 /* Save the skb for delayed return of skb to system */
670 tpl->Skb = skb;
671 tpl->DMABuff = dmabuf;
672 tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
673 tpl->FragList[0].DataAddr = htonl(newbuf);
674
675 /* Write the data length in the transmit list. */
676 tpl->FrameSize = cpu_to_be16((unsigned short)length);
677 tpl->MData = buf;
678
679 /* Transmit the frame and set the status values. */
680 tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
681 | TX_END_FRAME | TX_PASS_SRC_ADDR
682 | TX_FRAME_IRQ);
683
684 /* Let adapter send the frame. */
685 tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
686 spin_unlock_irqrestore(&tp->lock, flags);
687
ec634fe3 688 return NETDEV_TX_OK;
1da177e4
LT		 689}
690
691/*
692 * Write the given value to the 'Status' field of the specified TPL.
693 * NOTE: This function should be used whenever the status of any TPL must be
694 * modified by the driver, because the compiler may otherwise change the
695 * order of instructions such that writing the TPL status may be executed at
696 * an undesireable time. When this function is used, the status is always
697 * written when the function is called.
698 */
699static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
700{
701 tpl->Status = Status;
702}
703
704static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
705{
706 unsigned char SRBit;
707
708 if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
709 return;
710 if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
711 return;
712
713 SRBit = frame[8] & 0x80;
714 memcpy(&frame[8], hw_addr, 6);
715 frame[8] |= SRBit;
716
717 return;
718}
719
720/*
721 * The timer routine: Check if adapter still open and working, reopen if not.
722 */
723static void tms380tr_timer_chk(unsigned long data)
724{
725 struct net_device *dev = (struct net_device*)data;
726 struct net_local *tp = netdev_priv(dev);
727
728 if(tp->HaltInProgress)
729 return;
730
731 tms380tr_chk_outstanding_cmds(dev);
732 if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
733 && (tp->TplFree != tp->TplBusy))
734 {
735 /* Anything to send, but stalled too long */
736 tp->LastSendTime = jiffies;
737 tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
738 }
739
740 tp->timer.expires = jiffies + 2*HZ;
741 add_timer(&tp->timer);
742
743 if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
744 return;
745 tp->ReOpenInProgress = 1;
746 tms380tr_open_adapter(dev);
747
748 return;
749}
750
751/*
752 * The typical workload of the driver: Handle the network interface interrupts.
753 */
7d12e780 754irqreturn_t tms380tr_interrupt(int irq, void *dev_id)
1da177e4
LT		 755{
756 struct net_device *dev = dev_id;
757 struct net_local *tp;
758 unsigned short irq_type;
759 int handled = 0;
760
1da177e4
LT		 761 tp = netdev_priv(dev);
762
763 irq_type = SIFREADW(SIFSTS);
764
765 while(irq_type & STS_SYSTEM_IRQ) {
766 handled = 1;
767 irq_type &= STS_IRQ_MASK;
768
769 if(!tms380tr_chk_ssb(tp, irq_type)) {
770 printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
771 break;
772 }
773
774 switch(irq_type) {
775 case STS_IRQ_RECEIVE_STATUS:
776 tms380tr_reset_interrupt(dev);
777 tms380tr_rcv_status_irq(dev);
778 break;
779
780 case STS_IRQ_TRANSMIT_STATUS:
781 /* Check if TRANSMIT.HALT command is complete */
782 if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
783 tp->TransmitCommandActive = 0;
784 tp->TransmitHaltScheduled = 0;
785
786 /* Issue a new transmit command. */
787 tms380tr_exec_cmd(dev, OC_TRANSMIT);
788 }
789
790 tms380tr_reset_interrupt(dev);
791 tms380tr_tx_status_irq(dev);
792 break;
793
794 case STS_IRQ_COMMAND_STATUS:
795 /* The SSB contains status of last command
796 * other than receive/transmit.
797 */
798 tms380tr_cmd_status_irq(dev);
799 break;
800
801 case STS_IRQ_SCB_CLEAR:
802 /* The SCB is free for another command. */
803 tp->ScbInUse = 0;
804 tms380tr_chk_outstanding_cmds(dev);
805 break;
806
807 case STS_IRQ_RING_STATUS:
808 tms380tr_ring_status_irq(dev);
809 break;
810
811 case STS_IRQ_ADAPTER_CHECK:
812 tms380tr_chk_irq(dev);
813 break;
814
815 case STS_IRQ_LLC_STATUS:
816 printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
817 break;
818
819 case STS_IRQ_TIMER:
820 printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
821 break;
822
823 case STS_IRQ_RECEIVE_PENDING:
824 printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
825 break;
826
827 default:
828 printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
829 break;
830 }
831
832 /* Reset system interrupt if not already done. */
833 if(irq_type != STS_IRQ_TRANSMIT_STATUS
834 && irq_type != STS_IRQ_RECEIVE_STATUS) {
835 tms380tr_reset_interrupt(dev);
836 }
837
838 irq_type = SIFREADW(SIFSTS);
839 }
840
841 return IRQ_RETVAL(handled);
842}
843
844/*
845 * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
846 */
847static void tms380tr_reset_interrupt(struct net_device *dev)
848{
849 struct net_local *tp = netdev_priv(dev);
850 SSB *ssb = &tp->ssb;
851
852 /*
853 * [Workaround for "Data Late"]
854 * Set all fields of the SSB to well-defined values so we can
855 * check if the adapter has written the SSB.
856 */
857
858 ssb->STS = (unsigned short) -1;
859 ssb->Parm[0] = (unsigned short) -1;
860 ssb->Parm[1] = (unsigned short) -1;
861 ssb->Parm[2] = (unsigned short) -1;
862
863 /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
864 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
865 */
866 tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
867
868 return;
869}
870
871/*
872 * Check if the SSB has actually been written by the adapter.
873 */
874static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
875{
876 SSB *ssb = &tp->ssb; /* The address of the SSB. */
877
878 /* C 0 1 2 INTERRUPT CODE
879 * - - - - --------------
880 * 1 1 1 1 TRANSMIT STATUS
881 * 1 1 1 1 RECEIVE STATUS
882 * 1 ? ? 0 COMMAND STATUS
883 * 0 0 0 0 SCB CLEAR
884 * 1 1 0 0 RING STATUS
885 * 0 0 0 0 ADAPTER CHECK
886 *
887 * 0 = SSB field not affected by interrupt
888 * 1 = SSB field is affected by interrupt
889 *
890 * C = SSB ADDRESS +0: COMMAND
891 * 0 = SSB ADDRESS +2: STATUS 0
892 * 1 = SSB ADDRESS +4: STATUS 1
893 * 2 = SSB ADDRESS +6: STATUS 2
894 */
895
896 /* Check if this interrupt does use the SSB. */
897
898 if(IrqType != STS_IRQ_TRANSMIT_STATUS
899 && IrqType != STS_IRQ_RECEIVE_STATUS
900 && IrqType != STS_IRQ_COMMAND_STATUS
901 && IrqType != STS_IRQ_RING_STATUS)
902 {
903 return (1); /* SSB not involved. */
904 }
905
906 /* Note: All fields of the SSB have been set to all ones (-1) after it
907 * has last been used by the software (see DriverIsr()).
908 *
909 * Check if the affected SSB fields are still unchanged.
910 */
911
912 if(ssb->STS == (unsigned short) -1)
913 return (0); /* Command field not yet available. */
914 if(IrqType == STS_IRQ_COMMAND_STATUS)
915 return (1); /* Status fields not always affected. */
916 if(ssb->Parm[0] == (unsigned short) -1)
917 return (0); /* Status 1 field not yet available. */
918 if(IrqType == STS_IRQ_RING_STATUS)
919 return (1); /* Status 2 & 3 fields not affected. */
920
921 /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
922 if(ssb->Parm[1] == (unsigned short) -1)
923 return (0); /* Status 2 field not yet available. */
924 if(ssb->Parm[2] == (unsigned short) -1)
925 return (0); /* Status 3 field not yet available. */
926
927 return (1); /* All SSB fields have been written by the adapter. */
928}
929
930/*
931 * Evaluates the command results status in the SSB status field.
932 */
933static void tms380tr_cmd_status_irq(struct net_device *dev)
934{
935 struct net_local *tp = netdev_priv(dev);
936 unsigned short ssb_cmd, ssb_parm_0;
937 unsigned short ssb_parm_1;
938 char *open_err = "Open error -";
939 char *code_err = "Open code -";
940
941 /* Copy the ssb values to local variables */
942 ssb_cmd = tp->ssb.STS;
943 ssb_parm_0 = tp->ssb.Parm[0];
944 ssb_parm_1 = tp->ssb.Parm[1];
945
946 if(ssb_cmd == OPEN)
947 {
948 tp->Sleeping = 0;
949 if(!tp->ReOpenInProgress)
950 wake_up_interruptible(&tp->wait_for_tok_int);
951
952 tp->OpenCommandIssued = 0;
953 tp->ScbInUse = 0;
954
955 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
956 {
957 /* Success, the adapter is open. */
958 tp->LobeWireFaultLogged = 0;
959 tp->AdapterOpenFlag = 1;
960 tp->AdapterVirtOpenFlag = 1;
961 tp->TransmitCommandActive = 0;
962 tms380tr_exec_cmd(dev, OC_TRANSMIT);
963 tms380tr_exec_cmd(dev, OC_RECEIVE);
964
965 if(tp->ReOpenInProgress)
966 tp->ReOpenInProgress = 0;
967
968 return;
969 }
970 else /* The adapter did not open. */
971 {
972 if(ssb_parm_0 & NODE_ADDR_ERROR)
973 printk(KERN_INFO "%s: Node address error\n",
974 dev->name);
975 if(ssb_parm_0 & LIST_SIZE_ERROR)
976 printk(KERN_INFO "%s: List size error\n",
977 dev->name);
978 if(ssb_parm_0 & BUF_SIZE_ERROR)
979 printk(KERN_INFO "%s: Buffer size error\n",
980 dev->name);
981 if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
982 printk(KERN_INFO "%s: Tx buffer count error\n",
983 dev->name);
984 if(ssb_parm_0 & INVALID_OPEN_OPTION)
985 printk(KERN_INFO "%s: Invalid open option\n",
986 dev->name);
987 if(ssb_parm_0 & OPEN_ERROR)
988 {
989 /* Show the open phase. */
990 switch(ssb_parm_0 & OPEN_PHASES_MASK)
991 {
992 case LOBE_MEDIA_TEST:
993 if(!tp->LobeWireFaultLogged)
994 {
995 tp->LobeWireFaultLogged = 1;
996 printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
997 }
998 tp->ReOpenInProgress = 1;
999 tp->AdapterOpenFlag = 0;
1000 tp->AdapterVirtOpenFlag = 1;
1001 tms380tr_open_adapter(dev);
1002 return;
1003
1004 case PHYSICAL_INSERTION:
1005 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
1006 break;
1007
1008 case ADDRESS_VERIFICATION:
1009 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1010 break;
1011
1012 case PARTICIPATION_IN_RING_POLL:
1013 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1014 break;
1015
1016 case REQUEST_INITIALISATION:
1017 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1018 break;
1019
1020 case FULLDUPLEX_CHECK:
1021 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1022 break;
1023
1024 default:
1025 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1026 break;
1027 }
1028
1029 /* Show the open errors. */
1030 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1031 {
1032 case OPEN_FUNCTION_FAILURE:
1033 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1034 tp->LastOpenStatus =
1035 OPEN_FUNCTION_FAILURE;
1036 break;
1037
1038 case OPEN_SIGNAL_LOSS:
1039 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1040 tp->LastOpenStatus =
1041 OPEN_SIGNAL_LOSS;
1042 break;
1043
1044 case OPEN_TIMEOUT:
1045 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1046 tp->LastOpenStatus =
1047 OPEN_TIMEOUT;
1048 break;
1049
1050 case OPEN_RING_FAILURE:
1051 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1052 tp->LastOpenStatus =
1053 OPEN_RING_FAILURE;
1054 break;
1055
1056 case OPEN_RING_BEACONING:
1057 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1058 tp->LastOpenStatus =
1059 OPEN_RING_BEACONING;
1060 break;
1061
1062 case OPEN_DUPLICATE_NODEADDR:
1063 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1064 tp->LastOpenStatus =
1065 OPEN_DUPLICATE_NODEADDR;
1066 break;
1067
1068 case OPEN_REQUEST_INIT:
1069 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1070 tp->LastOpenStatus =
1071 OPEN_REQUEST_INIT;
1072 break;
1073
1074 case OPEN_REMOVE_RECEIVED:
1075 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1076 tp->LastOpenStatus =
1077 OPEN_REMOVE_RECEIVED;
1078 break;
1079
1080 case OPEN_FULLDUPLEX_SET:
1081 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1082 tp->LastOpenStatus =
1083 OPEN_FULLDUPLEX_SET;
1084 break;
1085
1086 default:
1087 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1088 tp->LastOpenStatus =
1089 OPEN_FUNCTION_FAILURE;
1090 break;
1091 }
1092 }
1093
1094 tp->AdapterOpenFlag = 0;
1095 tp->AdapterVirtOpenFlag = 0;
1096
1097 return;
1098 }
1099 }
1100 else
1101 {
1102 if(ssb_cmd != READ_ERROR_LOG)
1103 return;
1104
1105 /* Add values from the error log table to the MAC
1106 * statistics counters and update the errorlogtable
1107 * memory.
1108 */
1109 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1110 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1111 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1112 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1113 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1114 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1115 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1116 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1117 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1118 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1119 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1120 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1121 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1122 }
1123
1124 return;
1125}
1126
1127/*
1128 * The inverse routine to tms380tr_open().
1129 */
1130int tms380tr_close(struct net_device *dev)
1131{
1132 struct net_local *tp = netdev_priv(dev);
1133 netif_stop_queue(dev);
1134
1135 del_timer(&tp->timer);
1136
1137 /* Flush the Tx and disable Rx here. */
1138
1139 tp->HaltInProgress = 1;
1140 tms380tr_exec_cmd(dev, OC_CLOSE);
1141 tp->timer.expires = jiffies + 1*HZ;
1142 tp->timer.function = tms380tr_timer_end_wait;
1143 tp->timer.data = (unsigned long)dev;
1144 add_timer(&tp->timer);
1145
1146 tms380tr_enable_interrupts(dev);
1147
1148 tp->Sleeping = 1;
1149 interruptible_sleep_on(&tp->wait_for_tok_int);
1150 tp->TransmitCommandActive = 0;
1151
1152 del_timer(&tp->timer);
1153 tms380tr_disable_interrupts(dev);
1154
1155#ifdef CONFIG_ISA
1156 if(dev->dma > 0)
1157 {
1158 unsigned long flags=claim_dma_lock();
1159 disable_dma(dev->dma);
1160 release_dma_lock(flags);
1161 }
1162#endif
1163
1164 SIFWRITEW(0xFF00, SIFCMD);
1165#if 0
1166 if(dev->dma > 0) /* what the? */
1167 SIFWRITEB(0xff, POSREG);
1168#endif
1169 tms380tr_cancel_tx_queue(tp);
1170
1171 return (0);
1172}
1173
1174/*
1175 * Get the current statistics. This may be called with the card open
1176 * or closed.
1177 */
1178static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1179{
1180 struct net_local *tp = netdev_priv(dev);
1181
1182 return ((struct net_device_stats *)&tp->MacStat);
1183}
1184
1185/*
1186 * Set or clear the multicast filter for this adapter.
1187 */
1188static void tms380tr_set_multicast_list(struct net_device *dev)
1189{
1190 struct net_local *tp = netdev_priv(dev);
1191 unsigned int OpenOptions;
1192
1193 OpenOptions = tp->ocpl.OPENOptions &
1194 ~(PASS_ADAPTER_MAC_FRAMES
1195 | PASS_ATTENTION_FRAMES
1196 | PASS_BEACON_MAC_FRAMES
1197 | COPY_ALL_MAC_FRAMES
1198 | COPY_ALL_NON_MAC_FRAMES);
1199
1200 tp->ocpl.FunctAddr = 0;
1201
1202 if(dev->flags & IFF_PROMISC)
1203 /* Enable promiscuous mode */
1204 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1205 COPY_ALL_MAC_FRAMES;
1206 else
1207 {
1208 if(dev->flags & IFF_ALLMULTI)
1209 {
1210 /* Disable promiscuous mode, use normal mode. */
1211 tp->ocpl.FunctAddr = 0xFFFFFFFF;
1212 }
1213 else
1214 {
1215 int i;
1216 struct dev_mc_list *mclist = dev->mc_list;
1217 for (i=0; i< dev->mc_count; i++)
1218 {
1219 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1220 mclist->dmi_addr[2];
1221 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1222 mclist->dmi_addr[3];
1223 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1224 mclist->dmi_addr[4];
1225 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1226 mclist->dmi_addr[5];
1227 mclist = mclist->next;
1228 }
1229 }
1230 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1231 }
1232
1233 tp->ocpl.OPENOptions = OpenOptions;
1234 tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1235 return;
1236}
1237
1238/*
1239 * Wait for some time (microseconds)
1240 */
1241void tms380tr_wait(unsigned long time)
1242{
1243#if 0
1244 long tmp;
1245
1246 tmp = jiffies + time/(1000000/HZ);
1247 do {
3173c890 1248 tmp = schedule_timeout_interruptible(tmp);
1da177e4
LT		 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 */
1259static 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 */
1280static 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
504ff16c 1287 if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1da177e4
LT		 1288 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1289 dev->name, "tms380tr.bin");
1290 return (-1);
1291 }
1292
1293 fw_ptr = (unsigned short *)fw_entry->data;
1294 count2 = fw_entry->size / 2;
1295
1296 /* Hardware adapter reset */
1297 SIFWRITEW(ACL_ARESET, SIFACL);
1298 tms380tr_wait(40);
1299
1300 c = SIFREADW(SIFACL);
1301 tms380tr_wait(20);
1302
1303 if(dev->dma == 0) /* For PCI adapters */
1304 {
1305 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
1306 if(tp->setnselout)
1307 c |= (*tp->setnselout)(dev);
1308 }
1309
1310 /* In case a command is pending - forget it */
1311 tp->ScbInUse = 0;
1312
1313 c &= ~ACL_ARESET; /* Clear adapter reset bit */
1314 c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
1315 c |= ACL_BOOT;
1316 c |= ACL_SINTEN;
1317 c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
1318 SIFWRITEW(c, SIFACL);
1319 tms380tr_wait(40);
1320
1321 count = 0;
1322 /* Download firmware via DIO interface: */
1323 do {
1324 if (count2 < 3) continue;
1325
1326 /* Download first address part */
1327 SIFWRITEW(*fw_ptr, SIFADX);
1328 fw_ptr++;
1329 count2--;
1330 /* Download second address part */
1331 SIFWRITEW(*fw_ptr, SIFADD);
1332 fw_ptr++;
1333 count2--;
1334
1335 if((count = *fw_ptr) != 0) /* Load loop counter */
1336 {
1337 fw_ptr++; /* Download block data */
1338 count2--;
1339 if (count > count2) continue;
1340
1341 for(; count > 0; count--)
1342 {
1343 SIFWRITEW(*fw_ptr, SIFINC);
1344 fw_ptr++;
1345 count2--;
1346 }
1347 }
1348 else /* Stop, if last block downloaded */
1349 {
1350 c = SIFREADW(SIFACL);
1351 c &= (~ACL_CPHALT | ACL_SINTEN);
1352
1353 /* Clear CPHALT and start BUD */
1354 SIFWRITEW(c, SIFACL);
1355 if (fw_entry)
1356 release_firmware(fw_entry);
1357 return (1);
1358 }
1359 } while(count == 0);
1360
1361 if (fw_entry)
1362 release_firmware(fw_entry);
1363 printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1364 return (-1);
1365}
1366
1367/*
1368 * Starts bring up diagnostics of token ring adapter and evaluates
1369 * diagnostic results.
1370 */
1371static int tms380tr_bringup_diags(struct net_device *dev)
1372{
1373 int loop_cnt, retry_cnt;
1374 unsigned short Status;
1375
1376 tms380tr_wait(HALF_SECOND);
1377 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1378 tms380tr_wait(HALF_SECOND);
1379
1380 retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
1381
1382 do {
1383 retry_cnt--;
1384 if(tms380tr_debug > 3)
1385 printk(KERN_DEBUG "BUD-Status: ");
1386 loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
1387 do { /* Inspect BUD results */
1388 loop_cnt--;
1389 tms380tr_wait(HALF_SECOND);
1390 Status = SIFREADW(SIFSTS);
1391 Status &= STS_MASK;
1392
1393 if(tms380tr_debug > 3)
1394 printk(KERN_DEBUG " %04X \n", Status);
1395 /* BUD successfully completed */
1396 if(Status == STS_INITIALIZE)
1397 return (1);
1398 /* Unrecoverable hardware error, BUD not completed? */
1399 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1400 != (STS_ERROR | STS_TEST)));
1401
1402 /* Error preventing completion of BUD */
1403 if(retry_cnt > 0)
1404 {
1405 printk(KERN_INFO "%s: Adapter Software Reset.\n",
1406 dev->name);
1407 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1408 tms380tr_wait(HALF_SECOND);
1409 }
1410 } while(retry_cnt > 0);
1411
1412 Status = SIFREADW(SIFSTS);
1413
1414 printk(KERN_INFO "%s: Hardware error\n", dev->name);
1415 /* Hardware error occurred! */
1416 Status &= 0x001f;
1417 if (Status & 0x0010)
1418 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1419 else if ((Status & 0x000f) > 6)
1420 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1421 else
1422 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1423
1424 return (-1);
1425}
1426
1427/*
1428 * Copy initialisation data to adapter memory, beginning at address
1429 * 1:0A00; Starting DMA test and evaluating result bits.
1430 */
1431static int tms380tr_init_adapter(struct net_device *dev)
1432{
1433 struct net_local *tp = netdev_priv(dev);
1434
1435 const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1436 const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1437 0xC5, 0xD9, 0xC3, 0xD4};
1438 void *ptr = (void *)&tp->ipb;
1439 unsigned short *ipb_ptr = (unsigned short *)ptr;
1440 unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1441 unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1442 unsigned short Status;
1443 int i, loop_cnt, retry_cnt;
1444
1445 /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1446 tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1447 tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1448
1449 if(tms380tr_debug > 3)
1450 {
1451 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1452 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1453 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1454 printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
1455 }
1456 /* Maximum: three initialization retries */
1457 retry_cnt = INIT_MAX_RETRIES;
1458
1459 do {
1460 retry_cnt--;
1461
1462 /* Transfer initialization block */
1463 SIFWRITEW(0x0001, SIFADX);
1464
1465 /* To address 0001:0A00 of adapter RAM */
1466 SIFWRITEW(0x0A00, SIFADD);
1467
1468 /* Write 11 words to adapter RAM */
1469 for(i = 0; i < 11; i++)
1470 SIFWRITEW(ipb_ptr[i], SIFINC);
1471
1472 /* Execute SCB adapter command */
1473 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1474
1475 loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
1476
1477 /* While remaining retries, no error and not completed */
1478 do {
1479 Status = 0;
1480 loop_cnt--;
1481 tms380tr_wait(HALF_SECOND);
1482
1483 /* Mask interesting status bits */
1484 Status = SIFREADW(SIFSTS);
1485 Status &= STS_MASK;
1486 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
1487 && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1488
1489 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1490 {
1491 /* Initialization completed without error */
1492 i = 0;
1493 do { /* Test if contents of SCB is valid */
1494 if(SCB_Test[i] != *(cb_ptr + i))
1495 {
1496 printk(KERN_INFO "%s: DMA failed\n", dev->name);
1497 /* DMA data error: wrong data in SCB */
1498 return (-1);
1499 }
1500 i++;
1501 } while(i < 6);
1502
1503 i = 0;
1504 do { /* Test if contents of SSB is valid */
1505 if(SSB_Test[i] != *(sb_ptr + i))
1506 /* DMA data error: wrong data in SSB */
1507 return (-1);
1508 i++;
1509 } while (i < 8);
1510
1511 return (1); /* Adapter successfully initialized */
1512 }
1513 else
1514 {
1515 if((Status & STS_ERROR) != 0)
1516 {
1517 /* Initialization error occurred */
1518 Status = SIFREADW(SIFSTS);
1519 Status &= STS_ERROR_MASK;
1520 /* ShowInitialisationErrorCode(Status); */
1521 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1522 return (-1); /* Unrecoverable error */
1523 }
1524 else
1525 {
1526 if(retry_cnt > 0)
1527 {
1528 /* Reset adapter and try init again */
1529 tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1530 tms380tr_wait(HALF_SECOND);
1531 }
1532 }
1533 }
1534 } while(retry_cnt > 0);
1535
1536 printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1537 return (-1);
1538}
1539
1540/*
1541 * Check for outstanding commands in command queue and tries to execute
1542 * command immediately. Corresponding command flag in command queue is cleared.
1543 */
1544static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1545{
1546 struct net_local *tp = netdev_priv(dev);
1547 unsigned long Addr = 0;
1548
1549 if(tp->CMDqueue == 0)
1550 return; /* No command execution */
1551
1552 /* If SCB in use: no command */
1553 if(tp->ScbInUse == 1)
1554 return;
1555
1556 /* Check if adapter is opened, avoiding COMMAND_REJECT
1557 * interrupt by the adapter!
1558 */
1559 if(tp->AdapterOpenFlag == 0)
1560 {
1561 if(tp->CMDqueue & OC_OPEN)
1562 {
1563 /* Execute OPEN command */
1564 tp->CMDqueue ^= OC_OPEN;
1565
1566 Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1567 tp->scb.Parm[0] = LOWORD(Addr);
1568 tp->scb.Parm[1] = HIWORD(Addr);
1569 tp->scb.CMD = OPEN;
1570 }
1571 else
1572 /* No OPEN command queued, but adapter closed. Note:
1573 * We'll try to re-open the adapter in DriverPoll()
1574 */
1575 return; /* No adapter command issued */
1576 }
1577 else
1578 {
1579 /* Adapter is open; evaluate command queue: try to execute
1580 * outstanding commands (depending on priority!) CLOSE
1581 * command queued
1582 */
1583 if(tp->CMDqueue & OC_CLOSE)
1584 {
1585 tp->CMDqueue ^= OC_CLOSE;
1586 tp->AdapterOpenFlag = 0;
1587 tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1588 tp->scb.Parm[1] = 0; /* but should be set to zero! */
1589 tp->scb.CMD = CLOSE;
1590 if(!tp->HaltInProgress)
1591 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1592 else
1593 tp->CMDqueue = 0; /* no more commands */
1594 }
1595 else
1596 {
1597 if(tp->CMDqueue & OC_RECEIVE)
1598 {
1599 tp->CMDqueue ^= OC_RECEIVE;
1600 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1601 tp->scb.Parm[0] = LOWORD(Addr);
1602 tp->scb.Parm[1] = HIWORD(Addr);
1603 tp->scb.CMD = RECEIVE;
1604 }
1605 else
1606 {
1607 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1608 {
1609 /* NOTE: TRANSMIT.HALT must be checked
1610 * before TRANSMIT.
1611 */
1612 tp->CMDqueue ^= OC_TRANSMIT_HALT;
1613 tp->scb.CMD = TRANSMIT_HALT;
1614
1615 /* Parm[0] and Parm[1] are ignored
1616 * but should be set to zero!
1617 */
1618 tp->scb.Parm[0] = 0;
1619 tp->scb.Parm[1] = 0;
1620 }
1621 else
1622 {
1623 if(tp->CMDqueue & OC_TRANSMIT)
1624 {
1625 /* NOTE: TRANSMIT must be
1626 * checked after TRANSMIT.HALT
1627 */
1628 if(tp->TransmitCommandActive)
1629 {
1630 if(!tp->TransmitHaltScheduled)
1631 {
1632 tp->TransmitHaltScheduled = 1;
1633 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1634 }
1635 tp->TransmitCommandActive = 0;
1636 return;
1637 }
1638
1639 tp->CMDqueue ^= OC_TRANSMIT;
1640 tms380tr_cancel_tx_queue(tp);
1641 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1642 tp->scb.Parm[0] = LOWORD(Addr);
1643 tp->scb.Parm[1] = HIWORD(Addr);
1644 tp->scb.CMD = TRANSMIT;
1645 tp->TransmitCommandActive = 1;
1646 }
1647 else
1648 {
1649 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1650 {
1651 tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1652 tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1653 tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1654 tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1655 tp->scb.CMD = MODIFY_OPEN_PARMS;
1656 }
1657 else
1658 {
1659 if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1660 {
1661 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1662 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1663 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1664 tp->scb.CMD = SET_FUNCT_ADDR;
1665 }
1666 else
1667 {
1668 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1669 {
1670 tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1671 tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1672 tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1673 tp->scb.CMD = SET_GROUP_ADDR;
1674 }
1675 else
1676 {
1677 if(tp->CMDqueue & OC_READ_ERROR_LOG)
1678 {
1679 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1680 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1681 tp->scb.Parm[0] = LOWORD(Addr);
1682 tp->scb.Parm[1] = HIWORD(Addr);
1683 tp->scb.CMD = READ_ERROR_LOG;
1684 }
1685 else
1686 {
1687 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1688 tp->CMDqueue = 0;
1689 return;
1690 }
1691 }
1692 }
1693 }
1694 }
1695 }
1696 }
1697 }
1698 }
1699
1700 tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
1701
1702 /* Execute SCB and generate IRQ when done. */
1703 tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1704
1705 return;
1706}
1707
1708/*
1709 * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1710 * frames (disabled if bit 1 of OPEN option is set); report error MAC
1711 * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1712 * circuit fault on the lobe is detected; remove MAC frame received;
1713 * error counter overflow (255); opened adapter is the only station in ring.
1714 * After some of the IRQs the adapter is closed!
1715 */
1716static void tms380tr_ring_status_irq(struct net_device *dev)
1717{
1718 struct net_local *tp = netdev_priv(dev);
1719
1720 tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1721
1722 /* First: fill up statistics */
1723 if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1724 {
1725 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1726 tp->MacStat.line_errors++;
1727 }
1728
1729 /* Adapter is closed, but initialized */
1730 if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1731 {
1732 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1733 dev->name);
1734 tp->MacStat.line_errors++;
1735 }
1736
1737 if(tp->ssb.Parm[0] & RING_RECOVERY)
1738 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1739
1740 /* Counter overflow: read error log */
1741 if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1742 {
1743 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1744 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1745 }
1746
1747 /* Adapter is closed, but initialized */
1748 if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1749 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1750 dev->name);
1751
1752 /* Adapter is closed, but initialized */
1753 if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1754 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1755 dev->name);
1756
1757 if(tp->ssb.Parm[0] & HARD_ERROR)
1758 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1759
1760 if(tp->ssb.Parm[0] & SOFT_ERROR)
1761 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1762
1763 if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1764 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1765
1766 if(tp->ssb.Parm[0] & SINGLE_STATION)
1767 printk(KERN_INFO "%s: Single Station\n", dev->name);
1768
1769 /* Check if adapter has been closed */
1770 if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1771 {
1772 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1773 "CurrentRingStat %x\n",
1774 dev->name, tp->CurrentRingStatus);
1775 tp->AdapterOpenFlag = 0;
1776 tms380tr_open_adapter(dev);
1777 }
1778
1779 return;
1780}
1781
1782/*
1783 * Issued if adapter has encountered an unrecoverable hardware
1784 * or software error.
1785 */
1786static void tms380tr_chk_irq(struct net_device *dev)
1787{
1788 int i;
1789 unsigned short AdapterCheckBlock[4];
1790 struct net_local *tp = netdev_priv(dev);
1791
1792 tp->AdapterOpenFlag = 0; /* Adapter closed now */
1793
1794 /* Page number of adapter memory */
1795 SIFWRITEW(0x0001, SIFADX);
1796 /* Address offset */
1797 SIFWRITEW(CHECKADDR, SIFADR);
1798
1799 /* Reading 8 byte adapter check block. */
1800 for(i = 0; i < 4; i++)
1801 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1802
1803 if(tms380tr_debug > 3)
1804 {
1805 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1806 for (i = 0; i < 4; i++)
1807 printk("%04X", AdapterCheckBlock[i]);
1808 printk("\n");
1809 }
1810
1811 switch(AdapterCheckBlock[0])
1812 {
1813 case DIO_PARITY:
1814 printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1815 break;
1816
1817 case DMA_READ_ABORT:
1818 printk(KERN_INFO "%s DMA read operation aborted:\n",
1819 dev->name);
1820 switch (AdapterCheckBlock[1])
1821 {
1822 case 0:
1823 printk(KERN_INFO "Timeout\n");
1824 printk(KERN_INFO "Address: %04X %04X\n",
1825 AdapterCheckBlock[2],
1826 AdapterCheckBlock[3]);
1827 break;
1828
1829 case 1:
1830 printk(KERN_INFO "Parity error\n");
1831 printk(KERN_INFO "Address: %04X %04X\n",
1832 AdapterCheckBlock[2],
1833 AdapterCheckBlock[3]);
1834 break;
1835
1836 case 2:
1837 printk(KERN_INFO "Bus error\n");
1838 printk(KERN_INFO "Address: %04X %04X\n",
1839 AdapterCheckBlock[2],
1840 AdapterCheckBlock[3]);
1841 break;
1842
1843 default:
1844 printk(KERN_INFO "Unknown error.\n");
1845 break;
1846 }
1847 break;
1848
1849 case DMA_WRITE_ABORT:
1850 printk(KERN_INFO "%s: DMA write operation aborted: \n",
1851 dev->name);
1852 switch (AdapterCheckBlock[1])
1853 {
1854 case 0:
1855 printk(KERN_INFO "Timeout\n");
1856 printk(KERN_INFO "Address: %04X %04X\n",
1857 AdapterCheckBlock[2],
1858 AdapterCheckBlock[3]);
1859 break;
1860
1861 case 1:
1862 printk(KERN_INFO "Parity error\n");
1863 printk(KERN_INFO "Address: %04X %04X\n",
1864 AdapterCheckBlock[2],
1865 AdapterCheckBlock[3]);
1866 break;
1867
1868 case 2:
1869 printk(KERN_INFO "Bus error\n");
1870 printk(KERN_INFO "Address: %04X %04X\n",
1871 AdapterCheckBlock[2],
1872 AdapterCheckBlock[3]);
1873 break;
1874
1875 default:
1876 printk(KERN_INFO "Unknown error.\n");
1877 break;
1878 }
1879 break;
1880
1881 case ILLEGAL_OP_CODE:
1882 printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1883 dev->name);
1884 /* Parm[0-3]: adapter internal register R13-R15 */
1885 break;
1886
1887 case PARITY_ERRORS:
1888 printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1889 dev->name);
1890 /* Parm[0-3]: adapter internal register R13-R15 */
1891 break;
1892
1893 case RAM_DATA_ERROR:
1894 printk(KERN_INFO "%s: RAM data error\n", dev->name);
1895 /* Parm[0-1]: MSW/LSW address of RAM location. */
1896 break;
1897
1898 case RAM_PARITY_ERROR:
1899 printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1900 /* Parm[0-1]: MSW/LSW address of RAM location. */
1901 break;
1902
1903 case RING_UNDERRUN:
1904 printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1905 dev->name);
1906 break;
1907
1908 case INVALID_IRQ:
1909 printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1910 dev->name);
1911 /* Parm[0-3]: adapter internal register R13-R15 */
1912 break;
1913
1914 case INVALID_ERROR_IRQ:
1915 printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1916 dev->name);
1917 /* Parm[0-3]: adapter internal register R13-R15 */
1918 break;
1919
1920 case INVALID_XOP:
1921 printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1922 dev->name);
1923 /* Parm[0-3]: adapter internal register R13-R15 */
1924 break;
1925
1926 default:
1927 printk(KERN_INFO "%s: Unknown status", dev->name);
1928 break;
1929 }
1930
1931 if(tms380tr_chipset_init(dev) == 1)
1932 {
1933 /* Restart of firmware successful */
1934 tp->AdapterOpenFlag = 1;
1935 }
1936
1937 return;
1938}
1939
1940/*
1941 * Internal adapter pointer to RAM data are copied from adapter into
1942 * host system.
1943 */
1944static int tms380tr_read_ptr(struct net_device *dev)
1945{
1946 struct net_local *tp = netdev_priv(dev);
1947 unsigned short adapterram;
1948
1949 tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1950 ADAPTER_INT_PTRS, 16);
1951 tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1952 cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1953 return be16_to_cpu(adapterram);
1954}
1955
1956/*
1957 * Reads a number of bytes from adapter to system memory.
1958 */
1959static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1960 unsigned short Address, int Length)
1961{
1962 int i;
1963 unsigned short old_sifadx, old_sifadr, InWord;
1964
1965 /* Save the current values */
1966 old_sifadx = SIFREADW(SIFADX);
1967 old_sifadr = SIFREADW(SIFADR);
1968
1969 /* Page number of adapter memory */
1970 SIFWRITEW(0x0001, SIFADX);
1971 /* Address offset in adapter RAM */
1972 SIFWRITEW(Address, SIFADR);
1973
1974 /* Copy len byte from adapter memory to system data area. */
1975 i = 0;
1976 for(;;)
1977 {
1978 InWord = SIFREADW(SIFINC);
1979
1980 *(Data + i) = HIBYTE(InWord); /* Write first byte */
1981 if(++i == Length) /* All is done break */
1982 break;
1983
1984 *(Data + i) = LOBYTE(InWord); /* Write second byte */
1985 if (++i == Length) /* All is done break */
1986 break;
1987 }
1988
1989 /* Restore original values */
1990 SIFWRITEW(old_sifadx, SIFADX);
1991 SIFWRITEW(old_sifadr, SIFADR);
1992
1993 return;
1994}
1995
1996/*
1997 * Cancel all queued packets in the transmission queue.
1998 */
1999static void tms380tr_cancel_tx_queue(struct net_local* tp)
2000{
2001 TPL *tpl;
2002
2003 /*
2004 * NOTE: There must not be an active TRANSMIT command pending, when
2005 * this function is called.
2006 */
2007 if(tp->TransmitCommandActive)
2008 return;
2009
2010 for(;;)
2011 {
2012 tpl = tp->TplBusy;
2013 if(!tpl->BusyFlag)
2014 break;
2015 /* "Remove" TPL from busy list. */
2016 tp->TplBusy = tpl->NextTPLPtr;
2017 tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
2018 tpl->BusyFlag = 0; /* "free" TPL */
2019
2020 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2021 if (tpl->DMABuff)
504ff16c 2022 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
1da177e4
LT		 2023 dev_kfree_skb_any(tpl->Skb);
2024 }
2025
2026 return;
2027}
2028
2029/*
2030 * This function is called whenever a transmit interrupt is generated by the
2031 * adapter. For a command complete interrupt, it is checked if we have to
2032 * issue a new transmit command or not.
2033 */
2034static void tms380tr_tx_status_irq(struct net_device *dev)
2035{
2036 struct net_local *tp = netdev_priv(dev);
2037 unsigned char HighByte, HighAc, LowAc;
2038 TPL *tpl;
2039
2040 /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2041 * available, because the CLEAR SSB command has already been issued.
2042 *
2043 * Process all complete transmissions.
2044 */
2045
2046 for(;;)
2047 {
2048 tpl = tp->TplBusy;
2049 if(!tpl->BusyFlag || (tpl->Status
2050 & (TX_VALID | TX_FRAME_COMPLETE))
2051 != TX_FRAME_COMPLETE)
2052 {
2053 break;
2054 }
2055
2056 /* "Remove" TPL from busy list. */
2057 tp->TplBusy = tpl->NextTPLPtr ;
2058
2059 /* Check the transmit status field only for directed frames*/
2060 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2061 {
2062 HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2063 HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
2064 LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
2065
2066 if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2067 {
2068 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2069 dev->name,
2070 *(unsigned long *)&tpl->MData[2+2]);
2071 }
2072 else
2073 {
2074 if(tms380tr_debug > 3)
2075 printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2076 dev->name);
2077 }
2078 }
2079 else
2080 {
2081 if(!DIRECTED_FRAME(tpl))
2082 {
2083 if(tms380tr_debug > 3)
2084 printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2085 dev->name);
2086 }
2087 }
2088
2089 tp->MacStat.tx_packets++;
2090 if (tpl->DMABuff)
504ff16c 2091 dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
1da177e4
LT		 2092 dev_kfree_skb_irq(tpl->Skb);
2093 tpl->BusyFlag = 0; /* "free" TPL */
2094 }
2095
2096 if(!tp->TplFree->NextTPLPtr->BusyFlag)
2097 netif_wake_queue(dev);
2098 return;
2099}
2100
2101/*
2102 * Called if a frame receive interrupt is generated by the adapter.
2103 * Check if the frame is valid and indicate it to system.
2104 */
2105static void tms380tr_rcv_status_irq(struct net_device *dev)
2106{
2107 struct net_local *tp = netdev_priv(dev);
2108 unsigned char *ReceiveDataPtr;
2109 struct sk_buff *skb;
2110 unsigned int Length, Length2;
2111 RPL *rpl;
2112 RPL *SaveHead;
2113 dma_addr_t dmabuf;
2114
2115 /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2116 * available, because the CLEAR SSB command has already been issued.
2117 *
2118 * Process all complete receives.
2119 */
2120
2121 for(;;)
2122 {
2123 rpl = tp->RplHead;
2124 if(rpl->Status & RX_VALID)
2125 break; /* RPL still in use by adapter */
2126
2127 /* Forward RPLHead pointer to next list. */
2128 SaveHead = tp->RplHead;
2129 tp->RplHead = rpl->NextRPLPtr;
2130
2131 /* Get the frame size (Byte swap for Intel).
2132 * Do this early (see workaround comment below)
2133 */
2929e770 2134 Length = be16_to_cpu(rpl->FrameSize);
1da177e4
LT		 2135
2136 /* Check if the Frame_Start, Frame_End and
2137 * Frame_Complete bits are set.
2138 */
2139 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2140 == VALID_SINGLE_BUFFER_FRAME)
2141 {
2142 ReceiveDataPtr = rpl->MData;
2143
2144 /* Workaround for delayed write of FrameSize on ISA
2145 * (FrameSize is false but valid-bit is reset)
2146 * Frame size is set to zero when the RPL is freed.
2147 * Length2 is there because there have also been
2148 * cases where the FrameSize was partially written
2149 */
2929e770 2150 Length2 = be16_to_cpu(rpl->FrameSize);
1da177e4
LT		 2151
2152 if(Length == 0 || Length != Length2)
2153 {
2154 tp->RplHead = SaveHead;
2155 break; /* Return to tms380tr_interrupt */
2156 }
2157 tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2158
2159 if(tms380tr_debug > 3)
2160 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2161 dev->name, Length, Length);
2162
2163 /* Indicate the received frame to system the
2164 * adapter does the Source-Routing padding for
2165 * us. See: OpenOptions in tms380tr_init_opb()
2166 */
2167 skb = rpl->Skb;
2168 if(rpl->SkbStat == SKB_UNAVAILABLE)
2169 {
2170 /* Try again to allocate skb */
2171 skb = dev_alloc_skb(tp->MaxPacketSize);
2172 if(skb == NULL)
2173 {
2174 /* Update Stats ?? */
2175 }
2176 else
2177 {
1da177e4
LT		 2178 skb_put(skb, tp->MaxPacketSize);
2179 rpl->SkbStat = SKB_DATA_COPY;
2180 ReceiveDataPtr = rpl->MData;
2181 }
2182 }
2183
2184 if(skb && (rpl->SkbStat == SKB_DATA_COPY
2185 || rpl->SkbStat == SKB_DMA_DIRECT))
2186 {
2187 if(rpl->SkbStat == SKB_DATA_COPY)
27d7ff46
ACM		 2188 skb_copy_to_linear_data(skb, ReceiveDataPtr,
2189 Length);
1da177e4
LT		 2190
2191 /* Deliver frame to system */
2192 rpl->Skb = NULL;
2193 skb_trim(skb,Length);
2194 skb->protocol = tr_type_trans(skb,dev);
2195 netif_rx(skb);
1da177e4
LT		 2196 }
2197 }
2198 else /* Invalid frame */
2199 {
2200 if(rpl->Skb != NULL)
2201 dev_kfree_skb_irq(rpl->Skb);
2202
2203 /* Skip list. */
2204 if(rpl->Status & RX_START_FRAME)
2205 /* Frame start bit is set -> overflow. */
2206 tp->MacStat.rx_errors++;
2207 }
2208 if (rpl->DMABuff)
504ff16c 2209 dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE);
1da177e4
LT		 2210 rpl->DMABuff = 0;
2211
2212 /* Allocate new skb for rpl */
2213 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2214 /* skb == NULL ? then use local buffer */
2215 if(rpl->Skb == NULL)
2216 {
2217 rpl->SkbStat = SKB_UNAVAILABLE;
2218 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2219 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2220 }
2221 else /* skb != NULL */
2222 {
2223 rpl->Skb->dev = dev;
2224 skb_put(rpl->Skb, tp->MaxPacketSize);
2225
2226 /* Data unreachable for DMA ? then use local buffer */
504ff16c 2227 dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
1da177e4
LT		 2228 if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2229 {
2230 rpl->SkbStat = SKB_DATA_COPY;
2231 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2232 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2233 }
2234 else
2235 {
2236 /* DMA directly in skb->data */
2237 rpl->SkbStat = SKB_DMA_DIRECT;
2238 rpl->FragList[0].DataAddr = htonl(dmabuf);
2239 rpl->MData = rpl->Skb->data;
2240 rpl->DMABuff = dmabuf;
2241 }
2242 }
2243
2244 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2245 rpl->FrameSize = 0;
2246
2247 /* Pass the last RPL back to the adapter */
2248 tp->RplTail->FrameSize = 0;
2249
2250 /* Reset the CSTAT field in the list. */
2251 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2252
2253 /* Current RPL becomes last one in list. */
2254 tp->RplTail = tp->RplTail->NextRPLPtr;
2255
2256 /* Inform adapter about RPL valid. */
2257 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2258 }
2259
2260 return;
2261}
2262
2263/*
2264 * This function should be used whenever the status of any RPL must be
2265 * modified by the driver, because the compiler may otherwise change the
2266 * order of instructions such that writing the RPL status may be executed
2267 * at an undesireable time. When this function is used, the status is
2268 * always written when the function is called.
2269 */
2270static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2271{
2272 rpl->Status = Status;
2273
2274 return;
2275}
2276
2277/*
2278 * The function updates the statistic counters in mac->MacStat.
2279 * It differtiates between directed and broadcast/multicast ( ==functional)
2280 * frames.
2281 */
2282static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2283 unsigned int Length)
2284{
2285 tp->MacStat.rx_packets++;
2286 tp->MacStat.rx_bytes += Length;
2287
2288 /* Test functional bit */
2289 if(DataPtr[2] & GROUP_BIT)
2290 tp->MacStat.multicast++;
2291
2292 return;
2293}
2294
2295static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2296{
2297 struct net_local *tp = netdev_priv(dev);
2298 struct sockaddr *saddr = addr;
2299
2300 if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2301 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2302 return -EIO;
2303 }
2304 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2305 return 0;
2306}
2307
2308#if TMS380TR_DEBUG > 0
2309/*
2310 * Dump Packet (data)
2311 */
2312static void tms380tr_dump(unsigned char *Data, int length)
2313{
2314 int i, j;
2315
2316 for (i = 0, j = 0; i < length / 8; i++, j += 8)
2317 {
2318 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2319 Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2320 Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2321 }
2322
2323 return;
2324}
2325#endif
2326
2327void tmsdev_term(struct net_device *dev)
2328{
2329 struct net_local *tp;
2330
2331 tp = netdev_priv(dev);
504ff16c
JF		 2332 dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2333 DMA_BIDIRECTIONAL);
1da177e4
LT		 2334}
2335
f1608f85
SH		 2336const struct net_device_ops tms380tr_netdev_ops = {
2337 .ndo_open = tms380tr_open,
2338 .ndo_stop = tms380tr_close,
2339 .ndo_start_xmit = tms380tr_send_packet,
2340 .ndo_tx_timeout = tms380tr_timeout,
2341 .ndo_get_stats = tms380tr_get_stats,
2342 .ndo_set_multicast_list = tms380tr_set_multicast_list,
2343 .ndo_set_mac_address = tms380tr_set_mac_address,
2344};
2345EXPORT_SYMBOL(tms380tr_netdev_ops);
2346
84c3ea01 2347int tmsdev_init(struct net_device *dev, struct device *pdev)
1da177e4
LT		 2348{
2349 struct net_local *tms_local;
2350
8f15ea42 2351 memset(netdev_priv(dev), 0, sizeof(struct net_local));
1da177e4
LT		 2352 tms_local = netdev_priv(dev);
2353 init_waitqueue_head(&tms_local->wait_for_tok_int);
84c3ea01
JF		 2354 if (pdev->dma_mask)
2355 tms_local->dmalimit = *pdev->dma_mask;
2356 else
2357 return -ENOMEM;
1da177e4 2358 tms_local->pdev = pdev;
504ff16c
JF		 2359 tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2360 sizeof(struct net_local), DMA_BIDIRECTIONAL);
84c3ea01
JF		 2361 if (tms_local->dmabuffer + sizeof(struct net_local) >
2362 tms_local->dmalimit)
1da177e4
LT		 2363 {
2364 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2365 dev->name);
2366 tmsdev_term(dev);
2367 return -ENOMEM;
2368 }
2369
f1608f85 2370 dev->netdev_ops = &tms380tr_netdev_ops;
1da177e4 2371 dev->watchdog_timeo = HZ;
1da177e4
LT		 2372
2373 return 0;
2374}
2375
1da177e4
LT		 2376EXPORT_SYMBOL(tms380tr_open);
2377EXPORT_SYMBOL(tms380tr_close);
2378EXPORT_SYMBOL(tms380tr_interrupt);
2379EXPORT_SYMBOL(tmsdev_init);
2380EXPORT_SYMBOL(tmsdev_term);
2381EXPORT_SYMBOL(tms380tr_wait);
2382
504ff16c
JF		 2383#ifdef MODULE
2384
de70b4c8 2385static struct module *TMS380_module = NULL;
1da177e4
LT		 2386
2387int init_module(void)
2388{
2389 printk(KERN_DEBUG "%s", version);
2390
2391 TMS380_module = &__this_module;
2392 return 0;
2393}
2394
2395void cleanup_module(void)
2396{
2397 TMS380_module = NULL;
2398}
2399#endif
2400
2401MODULE_LICENSE("GPL");
2402
Linux kernel - Deliverables
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