1 /******************************************************************************
2 *
3 * (C)Copyright 1998,1999 SysKonnect,
4 * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
5 *
6 * See the file "skfddi.c" for further information.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * The information in this file is provided "AS IS" without warranty.
14 *
15 ******************************************************************************/
16
17 /*
18 * FBI board dependent Driver for SMT and LLC
19 */
20
21 #include "h/types.h"
22 #include "h/fddi.h"
23 #include "h/smc.h"
24 #include "h/supern_2.h"
25 #include "h/skfbiinc.h"
26 #include <linux/bitrev.h>
27
28 #ifndef lint
29 static const char ID_sccs[] = "@(#)drvfbi.c 1.63 99/02/11 (C) SK " ;
30 #endif
31
32 /*
33 * PCM active state
34 */
35 #define PC8_ACTIVE 8
36
37 #define LED_Y_ON 0x11 /* Used for ring up/down indication */
38 #define LED_Y_OFF 0x10
39
40
41 #define MS2BCLK(x) ((x)*12500L)
42
43 /*
44 * valid configuration values are:
45 */
46
47 /*
48 * xPOS_ID:xxxx
49 * | \ /
50 * | \/
51 * | --------------------- the patched POS_ID of the Adapter
52 * | xxxx = (Vendor ID low byte,
53 * | Vendor ID high byte,
54 * | Device ID low byte,
55 * | Device ID high byte)
56 * +------------------------------ the patched oem_id must be
57 * 'S' for SK or 'I' for IBM
58 * this is a short id for the driver.
59 */
60 #ifndef MULT_OEM
61 #ifndef OEM_CONCEPT
62 const u_char oem_id[] = "xPOS_ID:xxxx" ;
63 #else /* OEM_CONCEPT */
64 const u_char oem_id[] = OEM_ID ;
65 #endif /* OEM_CONCEPT */
66 #define ID_BYTE0 8
67 #define OEMID(smc,i) oem_id[ID_BYTE0 + i]
68 #else /* MULT_OEM */
69 const struct s_oem_ids oem_ids[] = {
70 #include "oemids.h"
71 {0}
72 };
73 #define OEMID(smc,i) smc->hw.oem_id->oi_id[i]
74 #endif /* MULT_OEM */
75
76 /* Prototypes of external functions */
77 #ifdef AIX
78 extern int AIX_vpdReadByte() ;
79 #endif
80
81
82 /* Prototype of a local function. */
83 static void smt_stop_watchdog(struct s_smc *smc);
84
85 /*
86 * FDDI card reset
87 */
card_start(struct s_smc * smc)88 static void card_start(struct s_smc *smc)
89 {
90 int i ;
91 #ifdef PCI
92 u_char rev_id ;
93 u_short word;
94 #endif
95
96 smt_stop_watchdog(smc) ;
97
98 #ifdef PCI
99 /*
100 * make sure no transfer activity is pending
101 */
102 outpw(FM_A(FM_MDREG1),FM_MINIT) ;
103 outp(ADDR(B0_CTRL), CTRL_HPI_SET) ;
104 hwt_wait_time(smc,hwt_quick_read(smc),MS2BCLK(10)) ;
105 /*
106 * now reset everything
107 */
108 outp(ADDR(B0_CTRL),CTRL_RST_SET) ; /* reset for all chips */
109 i = (int) inp(ADDR(B0_CTRL)) ; /* do dummy read */
110 SK_UNUSED(i) ; /* Make LINT happy. */
111 outp(ADDR(B0_CTRL), CTRL_RST_CLR) ;
112
113 /*
114 * Reset all bits in the PCI STATUS register
115 */
116 outp(ADDR(B0_TST_CTRL), TST_CFG_WRITE_ON) ; /* enable for writes */
117 word = inpw(PCI_C(PCI_STATUS)) ;
118 outpw(PCI_C(PCI_STATUS), word | PCI_ERRBITS) ;
119 outp(ADDR(B0_TST_CTRL), TST_CFG_WRITE_OFF) ; /* disable writes */
120
121 /*
122 * Release the reset of all the State machines
123 * Release Master_Reset
124 * Release HPI_SM_Reset
125 */
126 outp(ADDR(B0_CTRL), CTRL_MRST_CLR|CTRL_HPI_CLR) ;
127
128 /*
129 * determine the adapter type
130 * Note: Do it here, because some drivers may call card_start() once
131 * at very first before any other initialization functions is
132 * executed.
133 */
134 rev_id = inp(PCI_C(PCI_REV_ID)) ;
135 if ((rev_id & 0xf0) == SK_ML_ID_1 || (rev_id & 0xf0) == SK_ML_ID_2) {
136 smc->hw.hw_is_64bit = TRUE ;
137 } else {
138 smc->hw.hw_is_64bit = FALSE ;
139 }
140
141 /*
142 * Watermark initialization
143 */
144 if (!smc->hw.hw_is_64bit) {
145 outpd(ADDR(B4_R1_F), RX_WATERMARK) ;
146 outpd(ADDR(B5_XA_F), TX_WATERMARK) ;
147 outpd(ADDR(B5_XS_F), TX_WATERMARK) ;
148 }
149
150 outp(ADDR(B0_CTRL),CTRL_RST_CLR) ; /* clear the reset chips */
151 outp(ADDR(B0_LED),LED_GA_OFF|LED_MY_ON|LED_GB_OFF) ; /* ye LED on */
152
153 /* init the timer value for the watch dog 2,5 minutes */
154 outpd(ADDR(B2_WDOG_INI),0x6FC23AC0) ;
155
156 /* initialize the ISR mask */
157 smc->hw.is_imask = ISR_MASK ;
158 smc->hw.hw_state = STOPPED ;
159 #endif
160 GET_PAGE(0) ; /* necessary for BOOT */
161 }
162
card_stop(struct s_smc * smc)163 void card_stop(struct s_smc *smc)
164 {
165 smt_stop_watchdog(smc) ;
166 smc->hw.mac_ring_is_up = 0 ; /* ring down */
167
168 #ifdef PCI
169 /*
170 * make sure no transfer activity is pending
171 */
172 outpw(FM_A(FM_MDREG1),FM_MINIT) ;
173 outp(ADDR(B0_CTRL), CTRL_HPI_SET) ;
174 hwt_wait_time(smc,hwt_quick_read(smc),MS2BCLK(10)) ;
175 /*
176 * now reset everything
177 */
178 outp(ADDR(B0_CTRL),CTRL_RST_SET) ; /* reset for all chips */
179 outp(ADDR(B0_CTRL),CTRL_RST_CLR) ; /* reset for all chips */
180 outp(ADDR(B0_LED),LED_GA_OFF|LED_MY_OFF|LED_GB_OFF) ; /* all LEDs off */
181 smc->hw.hw_state = STOPPED ;
182 #endif
183 }
184 /*--------------------------- ISR handling ----------------------------------*/
185
mac1_irq(struct s_smc * smc,u_short stu,u_short stl)186 void mac1_irq(struct s_smc *smc, u_short stu, u_short stl)
187 {
188 int restart_tx = 0 ;
189 again:
190
191 /*
192 * parity error: note encoding error is not possible in tag mode
193 */
194 if (stl & (FM_SPCEPDS | /* parity err. syn.q.*/
195 FM_SPCEPDA0 | /* parity err. a.q.0 */
196 FM_SPCEPDA1)) { /* parity err. a.q.1 */
197 SMT_PANIC(smc,SMT_E0134, SMT_E0134_MSG) ;
198 }
199 /*
200 * buffer underrun: can only occur if a tx threshold is specified
201 */
202 if (stl & (FM_STBURS | /* tx buffer underrun syn.q.*/
203 FM_STBURA0 | /* tx buffer underrun a.q.0 */
204 FM_STBURA1)) { /* tx buffer underrun a.q.2 */
205 SMT_PANIC(smc,SMT_E0133, SMT_E0133_MSG) ;
206 }
207
208 if ( (stu & (FM_SXMTABT | /* transmit abort */
209 FM_STXABRS | /* syn. tx abort */
210 FM_STXABRA0)) || /* asyn. tx abort */
211 (stl & (FM_SQLCKS | /* lock for syn. q. */
212 FM_SQLCKA0)) ) { /* lock for asyn. q. */
213 formac_tx_restart(smc) ; /* init tx */
214 restart_tx = 1 ;
215 stu = inpw(FM_A(FM_ST1U)) ;
216 stl = inpw(FM_A(FM_ST1L)) ;
217 stu &= ~ (FM_STECFRMA0 | FM_STEFRMA0 | FM_STEFRMS) ;
218 if (stu || stl)
219 goto again ;
220 }
221
222 if (stu & (FM_STEFRMA0 | /* end of asyn tx */
223 FM_STEFRMS)) { /* end of sync tx */
224 restart_tx = 1 ;
225 }
226
227 if (restart_tx)
228 llc_restart_tx(smc) ;
229 }
230
231 /*
232 * interrupt source= plc1
233 * this function is called in nwfbisr.asm
234 */
plc1_irq(struct s_smc * smc)235 void plc1_irq(struct s_smc *smc)
236 {
237 u_short st = inpw(PLC(PB,PL_INTR_EVENT)) ;
238
239 plc_irq(smc,PB,st) ;
240 }
241
242 /*
243 * interrupt source= plc2
244 * this function is called in nwfbisr.asm
245 */
plc2_irq(struct s_smc * smc)246 void plc2_irq(struct s_smc *smc)
247 {
248 u_short st = inpw(PLC(PA,PL_INTR_EVENT)) ;
249
250 plc_irq(smc,PA,st) ;
251 }
252
253
254 /*
255 * interrupt source= timer
256 */
timer_irq(struct s_smc * smc)257 void timer_irq(struct s_smc *smc)
258 {
259 hwt_restart(smc);
260 smc->hw.t_stop = smc->hw.t_start;
261 smt_timer_done(smc) ;
262 }
263
264 /*
265 * return S-port (PA or PB)
266 */
pcm_get_s_port(struct s_smc * smc)267 int pcm_get_s_port(struct s_smc *smc)
268 {
269 SK_UNUSED(smc) ;
270 return PS;
271 }
272
273 /*
274 * Station Label = "FDDI-XYZ" where
275 *
276 * X = connector type
277 * Y = PMD type
278 * Z = port type
279 */
280 #define STATION_LABEL_CONNECTOR_OFFSET 5
281 #define STATION_LABEL_PMD_OFFSET 6
282 #define STATION_LABEL_PORT_OFFSET 7
283
read_address(struct s_smc * smc,u_char * mac_addr)284 void read_address(struct s_smc *smc, u_char *mac_addr)
285 {
286 char ConnectorType ;
287 char PmdType ;
288 int i ;
289
290 #ifdef PCI
291 for (i = 0; i < 6; i++) { /* read mac address from board */
292 smc->hw.fddi_phys_addr.a[i] =
293 bitrev8(inp(ADDR(B2_MAC_0+i)));
294 }
295 #endif
296
297 ConnectorType = inp(ADDR(B2_CONN_TYP)) ;
298 PmdType = inp(ADDR(B2_PMD_TYP)) ;
299
300 smc->y[PA].pmd_type[PMD_SK_CONN] =
301 smc->y[PB].pmd_type[PMD_SK_CONN] = ConnectorType ;
302 smc->y[PA].pmd_type[PMD_SK_PMD ] =
303 smc->y[PB].pmd_type[PMD_SK_PMD ] = PmdType ;
304
305 if (mac_addr) {
306 for (i = 0; i < 6 ;i++) {
307 smc->hw.fddi_canon_addr.a[i] = mac_addr[i] ;
308 smc->hw.fddi_home_addr.a[i] = bitrev8(mac_addr[i]);
309 }
310 return ;
311 }
312 smc->hw.fddi_home_addr = smc->hw.fddi_phys_addr ;
313
314 for (i = 0; i < 6 ;i++) {
315 smc->hw.fddi_canon_addr.a[i] =
316 bitrev8(smc->hw.fddi_phys_addr.a[i]);
317 }
318 }
319
320 /*
321 * FDDI card soft reset
322 */
init_board(struct s_smc * smc,u_char * mac_addr)323 void init_board(struct s_smc *smc, u_char *mac_addr)
324 {
325 card_start(smc) ;
326 read_address(smc,mac_addr) ;
327
328 if (!(inp(ADDR(B0_DAS)) & DAS_AVAIL))
329 smc->s.sas = SMT_SAS ; /* Single att. station */
330 else
331 smc->s.sas = SMT_DAS ; /* Dual att. station */
332
333 if (!(inp(ADDR(B0_DAS)) & DAS_BYP_ST))
334 smc->mib.fddiSMTBypassPresent = 0 ;
335 /* without opt. bypass */
336 else
337 smc->mib.fddiSMTBypassPresent = 1 ;
338 /* with opt. bypass */
339 }
340
341 /*
342 * insert or deinsert optical bypass (called by ECM)
343 */
sm_pm_bypass_req(struct s_smc * smc,int mode)344 void sm_pm_bypass_req(struct s_smc *smc, int mode)
345 {
346 DB_ECMN(1,"ECM : sm_pm_bypass_req(%s)\n",(mode == BP_INSERT) ?
347 "BP_INSERT" : "BP_DEINSERT",0) ;
348
349 if (smc->s.sas != SMT_DAS)
350 return ;
351
352 #ifdef PCI
353 switch(mode) {
354 case BP_INSERT :
355 outp(ADDR(B0_DAS),DAS_BYP_INS) ; /* insert station */
356 break ;
357 case BP_DEINSERT :
358 outp(ADDR(B0_DAS),DAS_BYP_RMV) ; /* bypass station */
359 break ;
360 }
361 #endif
362 }
363
364 /*
365 * check if bypass connected
366 */
sm_pm_bypass_present(struct s_smc * smc)367 int sm_pm_bypass_present(struct s_smc *smc)
368 {
369 return (inp(ADDR(B0_DAS)) & DAS_BYP_ST) ? TRUE : FALSE;
370 }
371
plc_clear_irq(struct s_smc * smc,int p)372 void plc_clear_irq(struct s_smc *smc, int p)
373 {
374 SK_UNUSED(p) ;
375
376 SK_UNUSED(smc) ;
377 }
378
379
380 /*
381 * led_indication called by rmt_indication() and
382 * pcm_state_change()
383 *
384 * Input:
385 * smc: SMT context
386 * led_event:
387 * 0 Only switch green LEDs according to their respective PCM state
388 * LED_Y_OFF just switch yellow LED off
389 * LED_Y_ON just switch yello LED on
390 */
led_indication(struct s_smc * smc,int led_event)391 static void led_indication(struct s_smc *smc, int led_event)
392 {
393 /* use smc->hw.mac_ring_is_up == TRUE
394 * as indication for Ring Operational
395 */
396 u_short led_state ;
397 struct s_phy *phy ;
398 struct fddi_mib_p *mib_a ;
399 struct fddi_mib_p *mib_b ;
400
401 phy = &smc->y[PA] ;
402 mib_a = phy->mib ;
403 phy = &smc->y[PB] ;
404 mib_b = phy->mib ;
405
406 #ifdef PCI
407 led_state = 0 ;
408
409 /* Ring up = yellow led OFF*/
410 if (led_event == LED_Y_ON) {
411 led_state |= LED_MY_ON ;
412 }
413 else if (led_event == LED_Y_OFF) {
414 led_state |= LED_MY_OFF ;
415 }
416 else { /* PCM state changed */
417 /* Link at Port A/S = green led A ON */
418 if (mib_a->fddiPORTPCMState == PC8_ACTIVE) {
419 led_state |= LED_GA_ON ;
420 }
421 else {
422 led_state |= LED_GA_OFF ;
423 }
424
425 /* Link at Port B = green led B ON */
426 if (mib_b->fddiPORTPCMState == PC8_ACTIVE) {
427 led_state |= LED_GB_ON ;
428 }
429 else {
430 led_state |= LED_GB_OFF ;
431 }
432 }
433
434 outp(ADDR(B0_LED), led_state) ;
435 #endif /* PCI */
436
437 }
438
439
pcm_state_change(struct s_smc * smc,int plc,int p_state)440 void pcm_state_change(struct s_smc *smc, int plc, int p_state)
441 {
442 /*
443 * the current implementation of pcm_state_change() in the driver
444 * parts must be renamed to drv_pcm_state_change() which will be called
445 * now after led_indication.
446 */
447 DRV_PCM_STATE_CHANGE(smc,plc,p_state) ;
448
449 led_indication(smc,0) ;
450 }
451
452
rmt_indication(struct s_smc * smc,int i)453 void rmt_indication(struct s_smc *smc, int i)
454 {
455 /* Call a driver special function if defined */
456 DRV_RMT_INDICATION(smc,i) ;
457
458 led_indication(smc, i ? LED_Y_OFF : LED_Y_ON) ;
459 }
460
461
462 /*
463 * llc_recover_tx called by init_tx (fplus.c)
464 */
llc_recover_tx(struct s_smc * smc)465 void llc_recover_tx(struct s_smc *smc)
466 {
467 #ifdef LOAD_GEN
468 extern int load_gen_flag ;
469
470 load_gen_flag = 0 ;
471 #endif
472 #ifndef SYNC
473 smc->hw.n_a_send= 0 ;
474 #else
475 SK_UNUSED(smc) ;
476 #endif
477 }
478
479 #ifdef MULT_OEM
is_equal_num(char comp1[],char comp2[],int num)480 static int is_equal_num(char comp1[], char comp2[], int num)
481 {
482 int i ;
483
484 for (i = 0 ; i < num ; i++) {
485 if (comp1[i] != comp2[i])
486 return 0;
487 }
488 return 1;
489 } /* is_equal_num */
490
491
492 /*
493 * set the OEM ID defaults, and test the contents of the OEM data base
494 * The default OEM is the first ACTIVE entry in the OEM data base
495 *
496 * returns: 0 success
497 * 1 error in data base
498 * 2 data base empty
499 * 3 no active entry
500 */
set_oi_id_def(struct s_smc * smc)501 int set_oi_id_def(struct s_smc *smc)
502 {
503 int sel_id ;
504 int i ;
505 int act_entries ;
506
507 i = 0 ;
508 sel_id = -1 ;
509 act_entries = FALSE ;
510 smc->hw.oem_id = 0 ;
511 smc->hw.oem_min_status = OI_STAT_ACTIVE ;
512
513 /* check OEM data base */
514 while (oem_ids[i].oi_status) {
515 switch (oem_ids[i].oi_status) {
516 case OI_STAT_ACTIVE:
517 act_entries = TRUE ; /* we have active IDs */
518 if (sel_id == -1)
519 sel_id = i ; /* save the first active ID */
520 case OI_STAT_VALID:
521 case OI_STAT_PRESENT:
522 i++ ;
523 break ; /* entry ok */
524 default:
525 return 1; /* invalid oi_status */
526 }
527 }
528
529 if (i == 0)
530 return 2;
531 if (!act_entries)
532 return 3;
533
534 /* ok, we have a valid OEM data base with an active entry */
535 smc->hw.oem_id = (struct s_oem_ids *) &oem_ids[sel_id] ;
536 return 0;
537 }
538 #endif /* MULT_OEM */
539
driver_get_bia(struct s_smc * smc,struct fddi_addr * bia_addr)540 void driver_get_bia(struct s_smc *smc, struct fddi_addr *bia_addr)
541 {
542 int i ;
543
544 for (i = 0 ; i < 6 ; i++)
545 bia_addr->a[i] = bitrev8(smc->hw.fddi_phys_addr.a[i]);
546 }
547
smt_start_watchdog(struct s_smc * smc)548 void smt_start_watchdog(struct s_smc *smc)
549 {
550 SK_UNUSED(smc) ; /* Make LINT happy. */
551
552 #ifndef DEBUG
553
554 #ifdef PCI
555 if (smc->hw.wdog_used) {
556 outpw(ADDR(B2_WDOG_CRTL),TIM_START) ; /* Start timer. */
557 }
558 #endif
559
560 #endif /* DEBUG */
561 }
562
smt_stop_watchdog(struct s_smc * smc)563 static void smt_stop_watchdog(struct s_smc *smc)
564 {
565 SK_UNUSED(smc) ; /* Make LINT happy. */
566 #ifndef DEBUG
567
568 #ifdef PCI
569 if (smc->hw.wdog_used) {
570 outpw(ADDR(B2_WDOG_CRTL),TIM_STOP) ; /* Stop timer. */
571 }
572 #endif
573
574 #endif /* DEBUG */
575 }
576
577 #ifdef PCI
578
mac_do_pci_fix(struct s_smc * smc)579 void mac_do_pci_fix(struct s_smc *smc)
580 {
581 SK_UNUSED(smc) ;
582 }
583 #endif /* PCI */
584
585