1 /******************************************************************************
3 * (C)Copyright 1998,1999 SysKonnect,
4 * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
6 * See the file "skfddi.c" for further information.
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.
13 * The information in this file is provided "AS IS" without warranty.
15 ******************************************************************************/
18 static char const ID_sccs[] = "@(#)hwmtm.c 1.40 99/05/31 (C) SK" ;
30 #include "h/supern_2.h"
31 #include "h/skfbiinc.h"
34 -------------------------------------------------------------
36 -------------------------------------------------------------
37 BEGIN_MANUAL_ENTRY(DOCUMENTATION)
44 -------------------------------------------------------------
46 -------------------------------------------------------------
49 static SMbuf *mb_start = 0 ;
50 static SMbuf *mb_free = 0 ;
51 static int mb_init = FALSE ;
52 static int call_count = 0 ;
56 -------------------------------------------------------------
58 -------------------------------------------------------------
63 extern struct smt_debug debug ;
68 extern u_char offDepth ;
69 extern u_char force_irq_pending ;
73 -------------------------------------------------------------
75 -------------------------------------------------------------
78 static void queue_llc_rx(struct s_smc *smc, SMbuf *mb);
79 static void smt_to_llc(struct s_smc *smc, SMbuf *mb);
80 static void init_txd_ring(struct s_smc *smc);
81 static void init_rxd_ring(struct s_smc *smc);
82 static void queue_txd_mb(struct s_smc *smc, SMbuf *mb);
83 static u_long init_descr_ring(struct s_smc *smc, union s_fp_descr volatile *start,
85 static u_long repair_txd_ring(struct s_smc *smc, struct s_smt_tx_queue *queue);
86 static u_long repair_rxd_ring(struct s_smc *smc, struct s_smt_rx_queue *queue);
87 static SMbuf* get_llc_rx(struct s_smc *smc);
88 static SMbuf* get_txd_mb(struct s_smc *smc);
89 static void mac_drv_clear_txd(struct s_smc *smc);
92 -------------------------------------------------------------
94 -------------------------------------------------------------
96 /* The external SMT functions are listed in cmtdef.h */
98 extern void* mac_drv_get_space(struct s_smc *smc, unsigned int size);
99 extern void* mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size);
100 extern void init_board(struct s_smc *smc, u_char *mac_addr);
101 extern void mac_drv_fill_rxd(struct s_smc *smc);
102 extern void plc1_irq(struct s_smc *smc);
103 extern void mac_drv_tx_complete(struct s_smc *smc,
104 volatile struct s_smt_fp_txd *txd);
105 extern void plc2_irq(struct s_smc *smc);
106 extern void mac1_irq(struct s_smc *smc, u_short stu, u_short stl);
107 extern void mac2_irq(struct s_smc *smc, u_short code_s2u, u_short code_s2l);
108 extern void mac3_irq(struct s_smc *smc, u_short code_s3u, u_short code_s3l);
109 extern void timer_irq(struct s_smc *smc);
110 extern void mac_drv_rx_complete(struct s_smc *smc,
111 volatile struct s_smt_fp_rxd *rxd,
112 int frag_count, int len);
113 extern void mac_drv_requeue_rxd(struct s_smc *smc,
114 volatile struct s_smt_fp_rxd *rxd,
116 extern void init_plc(struct s_smc *smc);
117 extern void mac_drv_clear_rxd(struct s_smc *smc,
118 volatile struct s_smt_fp_rxd *rxd, int frag_count);
121 extern void hwm_cpy_rxd2mb(void);
122 extern void hwm_cpy_txd2mb(void);
125 #ifdef ALL_RX_COMPLETE
126 extern void mac_drv_all_receives_complete(void);
129 extern u_long mac_drv_virt2phys(struct s_smc *smc, void *virt);
130 extern u_long dma_master(struct s_smc *smc, void *virt, int len, int flag);
133 extern void post_proc(void);
135 extern void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr,
139 extern int init_fplus(struct s_smc *smc);
140 extern int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead,
144 -------------------------------------------------------------
146 -------------------------------------------------------------
148 void process_receive(struct s_smc *smc);
149 void fddi_isr(struct s_smc *smc);
150 void smt_free_mbuf(struct s_smc *smc, SMbuf *mb);
151 void init_driver_fplus(struct s_smc *smc);
152 void mac_drv_rx_mode(struct s_smc *smc, int mode);
153 void init_fddi_driver(struct s_smc *smc, u_char *mac_addr);
154 void mac_drv_clear_tx_queue(struct s_smc *smc);
155 void mac_drv_clear_rx_queue(struct s_smc *smc);
156 void hwm_tx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
158 void hwm_rx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
161 int mac_drv_init(struct s_smc *smc);
162 int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, int frame_len,
165 u_int mac_drv_check_space(void);
167 SMbuf* smt_get_mbuf(struct s_smc *smc);
170 void mac_drv_debug_lev(void);
174 -------------------------------------------------------------
176 -------------------------------------------------------------
180 #define UNUSED(x) (x) = (x)
187 #define MA smc->hw.fddi_canon_addr.a
188 #define GROUP_ADDR_BIT 0x01
190 #define MA smc->hw.fddi_home_addr.a
191 #define GROUP_ADDR_BIT 0x80
194 #define RXD_TXD_COUNT (HWM_ASYNC_TXD_COUNT+HWM_SYNC_TXD_COUNT+\
195 SMT_R1_RXD_COUNT+SMT_R2_RXD_COUNT)
197 #ifdef MB_OUTSIDE_SMC
198 #define EXT_VIRT_MEM ((RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd) +\
199 MAX_MBUF*sizeof(SMbuf))
200 #define EXT_VIRT_MEM_2 ((RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd))
202 #define EXT_VIRT_MEM ((RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd))
206 * define critical read for 16 Bit drivers
208 #if defined(NDIS_OS2) || defined(ODI2)
209 #define CR_READ(var) ((var) & 0xffff0000 | ((var) & 0xffff))
211 #define CR_READ(var) (__le32)(var)
214 #define IMASK_SLOW (IS_PLINT1 | IS_PLINT2 | IS_TIMINT | IS_TOKEN | \
215 IS_MINTR1 | IS_MINTR2 | IS_MINTR3 | IS_R1_P | \
216 IS_R1_C | IS_XA_C | IS_XS_C)
219 -------------------------------------------------------------
220 INIT- AND SMT FUNCTIONS:
221 -------------------------------------------------------------
226 * BEGIN_MANUAL_ENTRY(mac_drv_check_space)
227 * u_int mac_drv_check_space()
229 * function DOWNCALL (drvsr.c)
230 * This function calculates the needed non virtual
231 * memory for MBufs, RxD and TxD descriptors etc.
232 * needed by the driver.
234 * return u_int memory in bytes
238 u_int mac_drv_check_space(void)
240 #ifdef MB_OUTSIDE_SMC
241 #ifdef COMMON_MB_POOL
243 if (call_count == 1) {
244 return(EXT_VIRT_MEM) ;
247 return(EXT_VIRT_MEM_2) ;
250 return (EXT_VIRT_MEM) ;
258 * BEGIN_MANUAL_ENTRY(mac_drv_init)
259 * void mac_drv_init(smc)
261 * function DOWNCALL (drvsr.c)
262 * In this function the hardware module allocates it's
264 * The operating system dependent module should call
265 * mac_drv_init once, after the adatper is detected.
268 int mac_drv_init(struct s_smc *smc)
270 if (sizeof(struct s_smt_fp_rxd) % 16) {
271 SMT_PANIC(smc,HWM_E0001,HWM_E0001_MSG) ;
273 if (sizeof(struct s_smt_fp_txd) % 16) {
274 SMT_PANIC(smc,HWM_E0002,HWM_E0002_MSG) ;
278 * get the required memory for the RxDs and TxDs
280 if (!(smc->os.hwm.descr_p = (union s_fp_descr volatile *)
281 mac_drv_get_desc_mem(smc,(u_int)
282 (RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd)))) {
283 return(1) ; /* no space the hwm modul can't work */
287 * get the memory for the SMT MBufs
289 #ifndef MB_OUTSIDE_SMC
290 smc->os.hwm.mbuf_pool.mb_start=(SMbuf *)(&smc->os.hwm.mbuf_pool.mb[0]) ;
292 #ifndef COMMON_MB_POOL
293 if (!(smc->os.hwm.mbuf_pool.mb_start = (SMbuf *) mac_drv_get_space(smc,
294 MAX_MBUF*sizeof(SMbuf)))) {
295 return(1) ; /* no space the hwm modul can't work */
299 if (!(mb_start = (SMbuf *) mac_drv_get_space(smc,
300 MAX_MBUF*sizeof(SMbuf)))) {
301 return(1) ; /* no space the hwm modul can't work */
310 * BEGIN_MANUAL_ENTRY(init_driver_fplus)
311 * init_driver_fplus(smc)
313 * Sets hardware modul specific values for the mode register 2
314 * (e.g. the byte alignment for the received frames, the position of the
315 * least significant byte etc.)
318 void init_driver_fplus(struct s_smc *smc)
320 smc->hw.fp.mdr2init = FM_LSB | FM_BMMODE | FM_ENNPRQ | FM_ENHSRQ | 3 ;
323 smc->hw.fp.mdr2init |= FM_CHKPAR | FM_PARITY ;
325 smc->hw.fp.mdr3init = FM_MENRQAUNLCK | FM_MENRS ;
328 /* enable address bit swapping */
329 smc->hw.fp.frselreg_init = FM_ENXMTADSWAP | FM_ENRCVADSWAP ;
333 static u_long init_descr_ring(struct s_smc *smc,
334 union s_fp_descr volatile *start,
338 union s_fp_descr volatile *d1 ;
339 union s_fp_descr volatile *d2 ;
342 DB_GEN("descr ring starts at = %x ",(void *)start,0,3) ;
343 for (i=count-1, d1=start; i ; i--) {
345 d1++ ; /* descr is owned by the host */
346 d2->r.rxd_rbctrl = cpu_to_le32(BMU_CHECK) ;
347 d2->r.rxd_next = &d1->r ;
348 phys = mac_drv_virt2phys(smc,(void *)d1) ;
349 d2->r.rxd_nrdadr = cpu_to_le32(phys) ;
351 DB_GEN("descr ring ends at = %x ",(void *)d1,0,3) ;
352 d1->r.rxd_rbctrl = cpu_to_le32(BMU_CHECK) ;
353 d1->r.rxd_next = &start->r ;
354 phys = mac_drv_virt2phys(smc,(void *)start) ;
355 d1->r.rxd_nrdadr = cpu_to_le32(phys) ;
357 for (i=count, d1=start; i ; i--) {
358 DRV_BUF_FLUSH(&d1->r,DDI_DMA_SYNC_FORDEV) ;
364 static void init_txd_ring(struct s_smc *smc)
366 struct s_smt_fp_txd volatile *ds ;
367 struct s_smt_tx_queue *queue ;
371 * initialize the transmit descriptors
373 ds = (struct s_smt_fp_txd volatile *) ((char *)smc->os.hwm.descr_p +
374 SMT_R1_RXD_COUNT*sizeof(struct s_smt_fp_rxd)) ;
375 queue = smc->hw.fp.tx[QUEUE_A0] ;
376 DB_GEN("Init async TxD ring, %d TxDs ",HWM_ASYNC_TXD_COUNT,0,3) ;
377 (void)init_descr_ring(smc,(union s_fp_descr volatile *)ds,
378 HWM_ASYNC_TXD_COUNT) ;
379 phys = le32_to_cpu(ds->txd_ntdadr) ;
381 queue->tx_curr_put = queue->tx_curr_get = ds ;
383 queue->tx_free = HWM_ASYNC_TXD_COUNT ;
385 outpd(ADDR(B5_XA_DA),phys) ;
387 ds = (struct s_smt_fp_txd volatile *) ((char *)ds +
388 HWM_ASYNC_TXD_COUNT*sizeof(struct s_smt_fp_txd)) ;
389 queue = smc->hw.fp.tx[QUEUE_S] ;
390 DB_GEN("Init sync TxD ring, %d TxDs ",HWM_SYNC_TXD_COUNT,0,3) ;
391 (void)init_descr_ring(smc,(union s_fp_descr volatile *)ds,
392 HWM_SYNC_TXD_COUNT) ;
393 phys = le32_to_cpu(ds->txd_ntdadr) ;
395 queue->tx_curr_put = queue->tx_curr_get = ds ;
396 queue->tx_free = HWM_SYNC_TXD_COUNT ;
398 outpd(ADDR(B5_XS_DA),phys) ;
401 static void init_rxd_ring(struct s_smc *smc)
403 struct s_smt_fp_rxd volatile *ds ;
404 struct s_smt_rx_queue *queue ;
408 * initialize the receive descriptors
410 ds = (struct s_smt_fp_rxd volatile *) smc->os.hwm.descr_p ;
411 queue = smc->hw.fp.rx[QUEUE_R1] ;
412 DB_GEN("Init RxD ring, %d RxDs ",SMT_R1_RXD_COUNT,0,3) ;
413 (void)init_descr_ring(smc,(union s_fp_descr volatile *)ds,
415 phys = le32_to_cpu(ds->rxd_nrdadr) ;
417 queue->rx_curr_put = queue->rx_curr_get = ds ;
418 queue->rx_free = SMT_R1_RXD_COUNT ;
420 outpd(ADDR(B4_R1_DA),phys) ;
424 * BEGIN_MANUAL_ENTRY(init_fddi_driver)
425 * void init_fddi_driver(smc,mac_addr)
427 * initializes the driver and it's variables
431 void init_fddi_driver(struct s_smc *smc, u_char *mac_addr)
436 init_board(smc,mac_addr) ;
437 (void)init_fplus(smc) ;
440 * initialize the SMbufs for the SMT
442 #ifndef COMMON_MB_POOL
443 mb = smc->os.hwm.mbuf_pool.mb_start ;
444 smc->os.hwm.mbuf_pool.mb_free = (SMbuf *)NULL ;
445 for (i = 0; i < MAX_MBUF; i++) {
446 mb->sm_use_count = 1 ;
447 smt_free_mbuf(smc,mb) ;
454 for (i = 0; i < MAX_MBUF; i++) {
455 mb->sm_use_count = 1 ;
456 smt_free_mbuf(smc,mb) ;
464 * initialize the other variables
466 smc->os.hwm.llc_rx_pipe = smc->os.hwm.llc_rx_tail = (SMbuf *)NULL ;
467 smc->os.hwm.txd_tx_pipe = smc->os.hwm.txd_tx_tail = NULL ;
468 smc->os.hwm.pass_SMT = smc->os.hwm.pass_NSA = smc->os.hwm.pass_DB = 0 ;
469 smc->os.hwm.pass_llc_promisc = TRUE ;
470 smc->os.hwm.queued_rx_frames = smc->os.hwm.queued_txd_mb = 0 ;
471 smc->os.hwm.detec_count = 0 ;
472 smc->os.hwm.rx_break = 0 ;
473 smc->os.hwm.rx_len_error = 0 ;
474 smc->os.hwm.isr_flag = FALSE ;
477 * make sure that the start pointer is 16 byte aligned
479 i = 16 - ((long)smc->os.hwm.descr_p & 0xf) ;
481 DB_GEN("i = %d",i,0,3) ;
482 smc->os.hwm.descr_p = (union s_fp_descr volatile *)
483 ((char *)smc->os.hwm.descr_p+i) ;
485 DB_GEN("pt to descr area = %x",(void *)smc->os.hwm.descr_p,0,3) ;
489 mac_drv_fill_rxd(smc) ;
495 SMbuf *smt_get_mbuf(struct s_smc *smc)
499 #ifndef COMMON_MB_POOL
500 mb = smc->os.hwm.mbuf_pool.mb_free ;
505 #ifndef COMMON_MB_POOL
506 smc->os.hwm.mbuf_pool.mb_free = mb->sm_next ;
508 mb_free = mb->sm_next ;
511 mb->sm_use_count = 1 ;
513 DB_GEN("get SMbuf: mb = %x",(void *)mb,0,3) ;
514 return (mb) ; /* May be NULL */
517 void smt_free_mbuf(struct s_smc *smc, SMbuf *mb)
522 DB_GEN("free_mbuf: sm_use_count = %d",mb->sm_use_count,0,3) ;
524 * If the use_count is != zero the MBuf is queued
525 * more than once and must not queued into the
528 if (!mb->sm_use_count) {
529 DB_GEN("free SMbuf: mb = %x",(void *)mb,0,3) ;
530 #ifndef COMMON_MB_POOL
531 mb->sm_next = smc->os.hwm.mbuf_pool.mb_free ;
532 smc->os.hwm.mbuf_pool.mb_free = mb ;
534 mb->sm_next = mb_free ;
540 SMT_PANIC(smc,HWM_E0003,HWM_E0003_MSG) ;
545 * BEGIN_MANUAL_ENTRY(mac_drv_repair_descr)
546 * void mac_drv_repair_descr(smc)
548 * function called from SMT (HWM / hwmtm.c)
549 * The BMU is idle when this function is called.
550 * Mac_drv_repair_descr sets up the physical address
551 * for all receive and transmit queues where the BMU
553 * It may be that the BMU was reseted during a fragmented
554 * transfer. In this case there are some fragments which will
555 * never completed by the BMU. The OWN bit of this fragments
556 * must be switched to be owned by the host.
558 * Give a start command to the receive BMU.
559 * Start the transmit BMUs if transmit frames pending.
563 void mac_drv_repair_descr(struct s_smc *smc)
567 if (smc->hw.hw_state != STOPPED) {
569 SMT_PANIC(smc,HWM_E0013,HWM_E0013_MSG) ;
574 * repair tx queues: don't start
576 phys = repair_txd_ring(smc,smc->hw.fp.tx[QUEUE_A0]) ;
577 outpd(ADDR(B5_XA_DA),phys) ;
578 if (smc->hw.fp.tx_q[QUEUE_A0].tx_used) {
579 outpd(ADDR(B0_XA_CSR),CSR_START) ;
581 phys = repair_txd_ring(smc,smc->hw.fp.tx[QUEUE_S]) ;
582 outpd(ADDR(B5_XS_DA),phys) ;
583 if (smc->hw.fp.tx_q[QUEUE_S].tx_used) {
584 outpd(ADDR(B0_XS_CSR),CSR_START) ;
590 phys = repair_rxd_ring(smc,smc->hw.fp.rx[QUEUE_R1]) ;
591 outpd(ADDR(B4_R1_DA),phys) ;
592 outpd(ADDR(B0_R1_CSR),CSR_START) ;
595 static u_long repair_txd_ring(struct s_smc *smc, struct s_smt_tx_queue *queue)
601 struct s_smt_fp_txd volatile *t ;
605 t = queue->tx_curr_get ;
606 tx_used = queue->tx_used ;
607 for (i = tx_used+queue->tx_free-1 ; i ; i-- ) {
610 phys = le32_to_cpu(t->txd_ntdadr) ;
612 t = queue->tx_curr_get ;
614 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORCPU) ;
615 tbctrl = le32_to_cpu(t->txd_tbctrl) ;
617 if (tbctrl & BMU_OWN) {
618 if (tbctrl & BMU_STF) {
619 break ; /* exit the loop */
623 * repair the descriptor
625 t->txd_tbctrl &= ~cpu_to_le32(BMU_OWN) ;
628 phys = le32_to_cpu(t->txd_ntdadr) ;
629 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
637 * Repairs the receive descriptor ring and returns the physical address
638 * where the BMU should continue working.
640 * o The physical address where the BMU was stopped has to be
641 * determined. This is the next RxD after rx_curr_get with an OWN
643 * o The BMU should start working at beginning of the next frame.
644 * RxDs with an OWN bit set but with a reset STF bit should be
645 * skipped and owned by the driver (OWN = 0).
647 static u_long repair_rxd_ring(struct s_smc *smc, struct s_smt_rx_queue *queue)
653 struct s_smt_fp_rxd volatile *r ;
657 r = queue->rx_curr_get ;
658 rx_used = queue->rx_used ;
659 for (i = SMT_R1_RXD_COUNT-1 ; i ; i-- ) {
662 phys = le32_to_cpu(r->rxd_nrdadr) ;
664 r = queue->rx_curr_get ;
666 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
667 rbctrl = le32_to_cpu(r->rxd_rbctrl) ;
669 if (rbctrl & BMU_OWN) {
670 if (rbctrl & BMU_STF) {
671 break ; /* exit the loop */
675 * repair the descriptor
677 r->rxd_rbctrl &= ~cpu_to_le32(BMU_OWN) ;
680 phys = le32_to_cpu(r->rxd_nrdadr) ;
681 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
690 -------------------------------------------------------------
691 INTERRUPT SERVICE ROUTINE:
692 -------------------------------------------------------------
696 * BEGIN_MANUAL_ENTRY(fddi_isr)
699 * function DOWNCALL (drvsr.c)
700 * interrupt service routine, handles the interrupt requests
701 * generated by the FDDI adapter.
703 * NOTE: The operating system dependent module must garantee that the
704 * interrupts of the adapter are disabled when it calls fddi_isr.
706 * About the USE_BREAK_ISR mechanismn:
708 * The main requirement of this mechanismn is to force an timer IRQ when
709 * leaving process_receive() with leave_isr set. process_receive() may
710 * be called at any time from anywhere!
711 * To be sure we don't miss such event we set 'force_irq' per default.
712 * We have to force and Timer IRQ if 'smc->os.hwm.leave_isr' AND
713 * 'force_irq' are set. 'force_irq' may be reset if a receive complete
718 void fddi_isr(struct s_smc *smc)
720 u_long is ; /* ISR source */
729 if (smc->os.hwm.rx_break) {
730 mac_drv_fill_rxd(smc) ;
731 if (smc->hw.fp.rx_q[QUEUE_R1].rx_used > 0) {
732 smc->os.hwm.rx_break = 0 ;
733 process_receive(smc) ;
736 smc->os.hwm.detec_count = 0 ;
741 smc->os.hwm.isr_flag = TRUE ;
745 if (smc->os.hwm.leave_isr) {
746 smc->os.hwm.leave_isr = FALSE ;
747 process_receive(smc) ;
751 while ((is = GET_ISR() & ISR_MASK)) {
752 NDD_TRACE("CH0B",is,0,0) ;
753 DB_GEN("ISA = 0x%x",is,0,7) ;
755 if (is & IMASK_SLOW) {
756 NDD_TRACE("CH1b",is,0,0) ;
757 if (is & IS_PLINT1) { /* PLC1 */
760 if (is & IS_PLINT2) { /* PLC2 */
763 if (is & IS_MINTR1) { /* FORMAC+ STU1(U/L) */
764 stu = inpw(FM_A(FM_ST1U)) ;
765 stl = inpw(FM_A(FM_ST1L)) ;
766 DB_GEN("Slow transmit complete",0,0,6) ;
767 mac1_irq(smc,stu,stl) ;
769 if (is & IS_MINTR2) { /* FORMAC+ STU2(U/L) */
770 stu= inpw(FM_A(FM_ST2U)) ;
771 stl= inpw(FM_A(FM_ST2L)) ;
772 DB_GEN("Slow receive complete",0,0,6) ;
773 DB_GEN("stl = %x : stu = %x",stl,stu,7) ;
774 mac2_irq(smc,stu,stl) ;
776 if (is & IS_MINTR3) { /* FORMAC+ STU3(U/L) */
777 stu= inpw(FM_A(FM_ST3U)) ;
778 stl= inpw(FM_A(FM_ST3L)) ;
779 DB_GEN("FORMAC Mode Register 3",0,0,6) ;
780 mac3_irq(smc,stu,stl) ;
782 if (is & IS_TIMINT) { /* Timer 82C54-2 */
785 force_irq_pending = 0 ;
788 * out of RxD detection
790 if (++smc->os.hwm.detec_count > 4) {
792 * check out of RxD condition
794 process_receive(smc) ;
797 if (is & IS_TOKEN) { /* Restricted Token Monitor */
800 if (is & IS_R1_P) { /* Parity error rx queue 1 */
802 outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_P) ;
803 SMT_PANIC(smc,HWM_E0004,HWM_E0004_MSG) ;
805 if (is & IS_R1_C) { /* Encoding error rx queue 1 */
807 outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_C) ;
808 SMT_PANIC(smc,HWM_E0005,HWM_E0005_MSG) ;
810 if (is & IS_XA_C) { /* Encoding error async tx q */
812 outpd(ADDR(B5_XA_CSR),CSR_IRQ_CL_C) ;
813 SMT_PANIC(smc,HWM_E0006,HWM_E0006_MSG) ;
815 if (is & IS_XS_C) { /* Encoding error sync tx q */
817 outpd(ADDR(B5_XS_CSR),CSR_IRQ_CL_C) ;
818 SMT_PANIC(smc,HWM_E0007,HWM_E0007_MSG) ;
823 * Fast Tx complete Async/Sync Queue (BMU service)
825 if (is & (IS_XS_F|IS_XA_F)) {
826 DB_GEN("Fast tx complete queue",0,0,6) ;
828 * clear IRQ, Note: no IRQ is lost, because
829 * we always service both queues
831 outpd(ADDR(B5_XS_CSR),CSR_IRQ_CL_F) ;
832 outpd(ADDR(B5_XA_CSR),CSR_IRQ_CL_F) ;
833 mac_drv_clear_txd(smc) ;
834 llc_restart_tx(smc) ;
838 * Fast Rx Complete (BMU service)
841 DB_GEN("Fast receive complete",0,0,6) ;
843 #ifndef USE_BREAK_ISR
844 outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_F) ;
845 process_receive(smc) ;
847 process_receive(smc) ;
848 if (smc->os.hwm.leave_isr) {
851 outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_F) ;
852 process_receive(smc) ;
858 while ((mb = get_llc_rx(smc))) {
865 while (!offDepth && (mb = get_llc_rx(smc))) {
869 if (!offDepth && smc->os.hwm.rx_break) {
870 process_receive(smc) ;
873 if (smc->q.ev_get != smc->q.ev_put) {
874 NDD_TRACE("CH2a",0,0,0) ;
879 if (offDepth) { /* leave fddi_isr because */
880 break ; /* indications not allowed */
884 if (smc->os.hwm.leave_isr) {
885 break ; /* leave fddi_isr */
889 /* NOTE: when the isr is left, no rx is pending */
890 } /* end of interrupt source polling loop */
893 if (smc->os.hwm.leave_isr && force_irq) {
897 smc->os.hwm.isr_flag = FALSE ;
898 NDD_TRACE("CH0E",0,0,0) ;
903 -------------------------------------------------------------
905 -------------------------------------------------------------
910 * BEGIN_MANUAL_ENTRY(mac_drv_rx_mode)
911 * void mac_drv_rx_mode(smc,mode)
913 * function DOWNCALL (fplus.c)
914 * Corresponding to the parameter mode, the operating system
915 * dependent module can activate several receive modes.
917 * para mode = 1: RX_ENABLE_ALLMULTI enable all multicasts
918 * = 2: RX_DISABLE_ALLMULTI disable "enable all multicasts"
919 * = 3: RX_ENABLE_PROMISC enable promiscuous
920 * = 4: RX_DISABLE_PROMISC disable promiscuous
921 * = 5: RX_ENABLE_NSA enable rec. of all NSA frames
922 * (disabled after 'driver reset' & 'set station address')
923 * = 6: RX_DISABLE_NSA disable rec. of all NSA frames
925 * = 21: RX_ENABLE_PASS_SMT ( see description )
926 * = 22: RX_DISABLE_PASS_SMT ( " " )
927 * = 23: RX_ENABLE_PASS_NSA ( " " )
928 * = 24: RX_DISABLE_PASS_NSA ( " " )
929 * = 25: RX_ENABLE_PASS_DB ( " " )
930 * = 26: RX_DISABLE_PASS_DB ( " " )
931 * = 27: RX_DISABLE_PASS_ALL ( " " )
932 * = 28: RX_DISABLE_LLC_PROMISC ( " " )
933 * = 29: RX_ENABLE_LLC_PROMISC ( " " )
936 * RX_ENABLE_PASS_SMT / RX_DISABLE_PASS_SMT
938 * If the operating system dependent module activates the
939 * mode RX_ENABLE_PASS_SMT, the hardware module
940 * duplicates all SMT frames with the frame control
941 * FC_SMT_INFO and passes them to the LLC receive channel
942 * by calling mac_drv_rx_init.
943 * The SMT Frames which are sent by the local SMT and the NSA
944 * frames whose A- and C-Indicator is not set are also duplicated
946 * The receive mode RX_DISABLE_PASS_SMT disables the passing
949 * RX_ENABLE_PASS_NSA / RX_DISABLE_PASS_NSA
951 * If the operating system dependent module activates the
952 * mode RX_ENABLE_PASS_NSA, the hardware module
953 * duplicates all NSA frames with frame control FC_SMT_NSA
954 * and a set A-Indicator and passed them to the LLC
955 * receive channel by calling mac_drv_rx_init.
956 * All NSA Frames which are sent by the local SMT
957 * are also duplicated and passed.
958 * The receive mode RX_DISABLE_PASS_NSA disables the passing
959 * of NSA frames with the A- or C-Indicator set.
961 * NOTE: For fear that the hardware module receives NSA frames with
962 * a reset A-Indicator, the operating system dependent module
963 * has to call mac_drv_rx_mode with the mode RX_ENABLE_NSA
964 * before activate the RX_ENABLE_PASS_NSA mode and after every
965 * 'driver reset' and 'set station address'.
967 * RX_ENABLE_PASS_DB / RX_DISABLE_PASS_DB
969 * If the operating system dependent module activates the
970 * mode RX_ENABLE_PASS_DB, direct BEACON frames
971 * (FC_BEACON frame control) are passed to the LLC receive
972 * channel by mac_drv_rx_init.
973 * The receive mode RX_DISABLE_PASS_DB disables the passing
974 * of direct BEACON frames.
976 * RX_DISABLE_PASS_ALL
978 * Disables all special receives modes. It is equal to
979 * call mac_drv_set_rx_mode successively with the
980 * parameters RX_DISABLE_NSA, RX_DISABLE_PASS_SMT,
981 * RX_DISABLE_PASS_NSA and RX_DISABLE_PASS_DB.
983 * RX_ENABLE_LLC_PROMISC
985 * (default) all received LLC frames and all SMT/NSA/DBEACON
986 * frames depending on the attitude of the flags
987 * PASS_SMT/PASS_NSA/PASS_DBEACON will be delivered to the
990 * RX_DISABLE_LLC_PROMISC
992 * all received SMT/NSA/DBEACON frames depending on the
993 * attitude of the flags PASS_SMT/PASS_NSA/PASS_DBEACON
994 * will be delivered to the LLC layer.
995 * all received LLC frames with a directed address, Multicast
996 * or Broadcast address will be delivered to the LLC
1001 void mac_drv_rx_mode(struct s_smc *smc, int mode)
1004 case RX_ENABLE_PASS_SMT:
1005 smc->os.hwm.pass_SMT = TRUE ;
1007 case RX_DISABLE_PASS_SMT:
1008 smc->os.hwm.pass_SMT = FALSE ;
1010 case RX_ENABLE_PASS_NSA:
1011 smc->os.hwm.pass_NSA = TRUE ;
1013 case RX_DISABLE_PASS_NSA:
1014 smc->os.hwm.pass_NSA = FALSE ;
1016 case RX_ENABLE_PASS_DB:
1017 smc->os.hwm.pass_DB = TRUE ;
1019 case RX_DISABLE_PASS_DB:
1020 smc->os.hwm.pass_DB = FALSE ;
1022 case RX_DISABLE_PASS_ALL:
1023 smc->os.hwm.pass_SMT = smc->os.hwm.pass_NSA = FALSE ;
1024 smc->os.hwm.pass_DB = FALSE ;
1025 smc->os.hwm.pass_llc_promisc = TRUE ;
1026 mac_set_rx_mode(smc,RX_DISABLE_NSA) ;
1028 case RX_DISABLE_LLC_PROMISC:
1029 smc->os.hwm.pass_llc_promisc = FALSE ;
1031 case RX_ENABLE_LLC_PROMISC:
1032 smc->os.hwm.pass_llc_promisc = TRUE ;
1034 case RX_ENABLE_ALLMULTI:
1035 case RX_DISABLE_ALLMULTI:
1036 case RX_ENABLE_PROMISC:
1037 case RX_DISABLE_PROMISC:
1039 case RX_DISABLE_NSA:
1041 mac_set_rx_mode(smc,mode) ;
1045 #endif /* ifndef NDIS_OS2 */
1048 * process receive queue
1050 void process_receive(struct s_smc *smc)
1054 int frag_count ; /* number of RxDs of the curr rx buf */
1055 int used_frags ; /* number of RxDs of the curr frame */
1056 struct s_smt_rx_queue *queue ; /* points to the queue ctl struct */
1057 struct s_smt_fp_rxd volatile *r ; /* rxd pointer */
1058 struct s_smt_fp_rxd volatile *rxd ; /* first rxd of rx frame */
1059 u_long rbctrl ; /* receive buffer control word */
1060 u_long rfsw ; /* receive frame status word */
1065 u_char fc ; /* Frame control */
1066 int len ; /* Frame length */
1068 smc->os.hwm.detec_count = 0 ;
1069 queue = smc->hw.fp.rx[QUEUE_R1] ;
1070 NDD_TRACE("RHxB",0,0,0) ;
1072 r = queue->rx_curr_get ;
1073 rx_used = queue->rx_used ;
1076 #ifdef USE_BREAK_ISR
1077 if (smc->os.hwm.leave_isr) {
1083 smc->os.hwm.rx_break = 1 ;
1086 smc->os.hwm.rx_break = 0 ;
1089 if (smc->os.hwm.rx_break) {
1095 DB_RX("Check RxD %x for OWN and EOF",(void *)r,0,5) ;
1096 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
1097 rbctrl = le32_to_cpu(CR_READ(r->rxd_rbctrl));
1099 if (rbctrl & BMU_OWN) {
1100 NDD_TRACE("RHxE",r,rfsw,rbctrl) ;
1101 DB_RX("End of RxDs",0,0,4) ;
1105 * out of RxD detection
1109 SMT_PANIC(smc,HWM_E0009,HWM_E0009_MSG) ;
1110 /* Either we don't have an RxD or all
1111 * RxDs are filled. Therefore it's allowed
1112 * for to set the STOPPED flag */
1113 smc->hw.hw_state = STOPPED ;
1114 mac_drv_clear_rx_queue(smc) ;
1115 smc->hw.hw_state = STARTED ;
1116 mac_drv_fill_rxd(smc) ;
1117 smc->os.hwm.detec_count = 0 ;
1120 rfsw = le32_to_cpu(r->rxd_rfsw) ;
1121 if ((rbctrl & BMU_STF) != ((rbctrl & BMU_ST_BUF) <<5)) {
1123 * The BMU_STF bit is deleted, 1 frame is
1124 * placed into more than 1 rx buffer
1126 * skip frame by setting the rx len to 0
1128 * if fragment count == 0
1129 * The missing STF bit belongs to the
1130 * current frame, search for the
1131 * EOF bit to complete the frame
1133 * the fragment belongs to the next frame,
1134 * exit the loop and process the frame
1142 n += rbctrl & 0xffff ;
1146 } while (!(rbctrl & BMU_EOF)) ;
1147 used_frags = frag_count ;
1148 DB_RX("EOF set in RxD, used_frags = %d ",used_frags,0,5) ;
1150 /* may be next 2 DRV_BUF_FLUSH() can be skipped, because */
1151 /* BMU_ST_BUF will not be changed by the ASIC */
1152 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
1153 while (rx_used && !(r->rxd_rbctrl & cpu_to_le32(BMU_ST_BUF))) {
1154 DB_RX("Check STF bit in %x",(void *)r,0,5) ;
1156 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
1160 DB_RX("STF bit found",0,0,5) ;
1163 * The received frame is finished for the process receive
1165 rxd = queue->rx_curr_get ;
1166 queue->rx_curr_get = r ;
1167 queue->rx_free += frag_count ;
1168 queue->rx_used = rx_used ;
1171 * ASIC Errata no. 7 (STF - Bit Bug)
1173 rxd->rxd_rbctrl &= cpu_to_le32(~BMU_STF) ;
1175 for (r=rxd, i=frag_count ; i ; r=r->rxd_next, i--){
1176 DB_RX("dma_complete for RxD %x",(void *)r,0,5) ;
1177 dma_complete(smc,(union s_fp_descr volatile *)r,DMA_WR);
1179 smc->hw.fp.err_stats.err_valid++ ;
1180 smc->mib.m[MAC0].fddiMACCopied_Ct++ ;
1182 /* the length of the data including the FC */
1183 len = (rfsw & RD_LENGTH) - 4 ;
1185 DB_RX("frame length = %d",len,0,4) ;
1187 * check the frame_length and all error flags
1189 if (rfsw & (RX_MSRABT|RX_FS_E|RX_FS_CRC|RX_FS_IMPL)){
1190 if (rfsw & RD_S_MSRABT) {
1191 DB_RX("Frame aborted by the FORMAC",0,0,2) ;
1192 smc->hw.fp.err_stats.err_abort++ ;
1195 * check frame status
1197 if (rfsw & RD_S_SEAC2) {
1198 DB_RX("E-Indicator set",0,0,2) ;
1199 smc->hw.fp.err_stats.err_e_indicator++ ;
1201 if (rfsw & RD_S_SFRMERR) {
1202 DB_RX("CRC error",0,0,2) ;
1203 smc->hw.fp.err_stats.err_crc++ ;
1205 if (rfsw & RX_FS_IMPL) {
1206 DB_RX("Implementer frame",0,0,2) ;
1207 smc->hw.fp.err_stats.err_imp_frame++ ;
1211 if (len > FDDI_RAW_MTU-4) {
1212 DB_RX("Frame too long error",0,0,2) ;
1213 smc->hw.fp.err_stats.err_too_long++ ;
1217 * SUPERNET 3 Bug: FORMAC delivers status words
1218 * of aborded frames to the BMU
1221 DB_RX("Frame length = 0",0,0,2) ;
1226 DB_RX("BMU: rx len differs: [%d:%d]",len,n,4);
1227 smc->os.hwm.rx_len_error++ ;
1234 virt = (u_char far *) rxd->rxd_virt ;
1235 DB_RX("FC = %x",*virt,0,2) ;
1236 if (virt[12] == MA[5] &&
1237 virt[11] == MA[4] &&
1238 virt[10] == MA[3] &&
1241 (virt[7] & ~GROUP_ADDR_BIT) == MA[0]) {
1248 if (rfsw & RX_FS_LLC) {
1250 * if pass_llc_promisc is disable
1251 * if DA != Multicast or Broadcast or DA!=MA
1254 if (!smc->os.hwm.pass_llc_promisc) {
1255 if(!(virt[1] & GROUP_ADDR_BIT)) {
1256 if (virt[6] != MA[5] ||
1262 DB_RX("DA != MA and not multi- or broadcast",0,0,2) ;
1269 * LLC frame received
1271 DB_RX("LLC - receive",0,0,4) ;
1272 mac_drv_rx_complete(smc,rxd,frag_count,len) ;
1275 if (!(mb = smt_get_mbuf(smc))) {
1276 smc->hw.fp.err_stats.err_no_buf++ ;
1277 DB_RX("No SMbuf; receive terminated",0,0,4) ;
1280 data = smtod(mb,char *) - 1 ;
1283 * copy the frame into a SMT_MBuf
1286 hwm_cpy_rxd2mb(rxd,data,len) ;
1288 for (r=rxd, i=used_frags ; i ; r=r->rxd_next, i--){
1289 n = le32_to_cpu(r->rxd_rbctrl) & RD_LENGTH ;
1290 DB_RX("cp SMT frame to mb: len = %d",n,0,6) ;
1291 memcpy(data,r->rxd_virt,n) ;
1294 data = smtod(mb,char *) - 1 ;
1296 fc = *(char *)mb->sm_data = *data ;
1297 mb->sm_len = len - 1 ; /* len - fc */
1301 * SMT frame received
1305 smc->hw.fp.err_stats.err_smt_frame++ ;
1306 DB_RX("SMT frame received ",0,0,5) ;
1308 if (smc->os.hwm.pass_SMT) {
1309 DB_RX("pass SMT frame ",0,0,5) ;
1310 mac_drv_rx_complete(smc, rxd,
1314 DB_RX("requeue RxD",0,0,5) ;
1315 mac_drv_requeue_rxd(smc,rxd,frag_count);
1318 smt_received_pack(smc,mb,(int)(rfsw>>25)) ;
1321 smc->hw.fp.err_stats.err_smt_frame++ ;
1322 DB_RX("SMT frame received ",0,0,5) ;
1324 /* if pass_NSA set pass the NSA frame or */
1325 /* pass_SMT set and the A-Indicator */
1326 /* is not set, pass the NSA frame */
1327 if (smc->os.hwm.pass_NSA ||
1328 (smc->os.hwm.pass_SMT &&
1329 !(rfsw & A_INDIC))) {
1330 DB_RX("pass SMT frame ",0,0,5) ;
1331 mac_drv_rx_complete(smc, rxd,
1335 DB_RX("requeue RxD",0,0,5) ;
1336 mac_drv_requeue_rxd(smc,rxd,frag_count);
1339 smt_received_pack(smc,mb,(int)(rfsw>>25)) ;
1342 if (smc->os.hwm.pass_DB) {
1343 DB_RX("pass DB frame ",0,0,5) ;
1344 mac_drv_rx_complete(smc, rxd,
1348 DB_RX("requeue RxD",0,0,5) ;
1349 mac_drv_requeue_rxd(smc,rxd,frag_count);
1351 smt_free_mbuf(smc,mb) ;
1355 * unknown FC abord the frame
1357 DB_RX("unknown FC error",0,0,2) ;
1358 smt_free_mbuf(smc,mb) ;
1359 DB_RX("requeue RxD",0,0,5) ;
1360 mac_drv_requeue_rxd(smc,rxd,frag_count) ;
1361 if ((fc & 0xf0) == FC_MAC)
1362 smc->hw.fp.err_stats.err_mac_frame++ ;
1364 smc->hw.fp.err_stats.err_imp_frame++ ;
1370 DB_RX("next RxD is %x ",queue->rx_curr_get,0,3) ;
1371 NDD_TRACE("RHx1",queue->rx_curr_get,0,0) ;
1374 /*--------------------------------------------------------------------*/
1376 DB_RX("requeue RxD",0,0,5) ;
1377 mac_drv_requeue_rxd(smc,rxd,frag_count) ;
1379 DB_RX("next RxD is %x ",queue->rx_curr_get,0,3) ;
1380 NDD_TRACE("RHx2",queue->rx_curr_get,0,0) ;
1383 #ifdef ALL_RX_COMPLETE
1384 mac_drv_all_receives_complete(smc) ;
1386 return ; /* lint bug: needs return detect end of function */
1389 static void smt_to_llc(struct s_smc *smc, SMbuf *mb)
1393 DB_RX("send a queued frame to the llc layer",0,0,4) ;
1394 smc->os.hwm.r.len = mb->sm_len ;
1395 smc->os.hwm.r.mb_pos = smtod(mb,char *) ;
1396 fc = *smc->os.hwm.r.mb_pos ;
1397 (void)mac_drv_rx_init(smc,(int)mb->sm_len,(int)fc,
1398 smc->os.hwm.r.mb_pos,(int)mb->sm_len) ;
1399 smt_free_mbuf(smc,mb) ;
1403 * BEGIN_MANUAL_ENTRY(hwm_rx_frag)
1404 * void hwm_rx_frag(smc,virt,phys,len,frame_status)
1406 * function MACRO (hardware module, hwmtm.h)
1407 * This function calls dma_master for preparing the
1408 * system hardware for the DMA transfer and initializes
1409 * the current RxD with the length and the physical and
1410 * virtual address of the fragment. Furthermore, it sets the
1411 * STF and EOF bits depending on the frame status byte,
1412 * switches the OWN flag of the RxD, so that it is owned by the
1413 * adapter and issues an rx_start.
1415 * para virt virtual pointer to the fragment
1416 * len the length of the fragment
1417 * frame_status status of the frame, see design description
1419 * NOTE: It is possible to call this function with a fragment length
1424 void hwm_rx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
1427 struct s_smt_fp_rxd volatile *r ;
1430 NDD_TRACE("RHfB",virt,len,frame_status) ;
1431 DB_RX("hwm_rx_frag: len = %d, frame_status = %x\n",len,frame_status,2) ;
1432 r = smc->hw.fp.rx_q[QUEUE_R1].rx_curr_put ;
1433 r->rxd_virt = virt ;
1434 r->rxd_rbadr = cpu_to_le32(phys) ;
1435 rbctrl = cpu_to_le32( (((__u32)frame_status &
1436 (FIRST_FRAG|LAST_FRAG))<<26) |
1437 (((u_long) frame_status & FIRST_FRAG) << 21) |
1438 BMU_OWN | BMU_CHECK | BMU_EN_IRQ_EOF | len) ;
1439 r->rxd_rbctrl = rbctrl ;
1441 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
1442 outpd(ADDR(B0_R1_CSR),CSR_START) ;
1443 smc->hw.fp.rx_q[QUEUE_R1].rx_free-- ;
1444 smc->hw.fp.rx_q[QUEUE_R1].rx_used++ ;
1445 smc->hw.fp.rx_q[QUEUE_R1].rx_curr_put = r->rxd_next ;
1446 NDD_TRACE("RHfE",r,le32_to_cpu(r->rxd_rbadr),0) ;
1450 * BEGINN_MANUAL_ENTRY(mac_drv_clear_rx_queue)
1452 * void mac_drv_clear_rx_queue(smc)
1453 * struct s_smc *smc ;
1455 * function DOWNCALL (hardware module, hwmtm.c)
1456 * mac_drv_clear_rx_queue is called by the OS-specific module
1457 * after it has issued a card_stop.
1458 * In this case, the frames in the receive queue are obsolete and
1459 * should be removed. For removing mac_drv_clear_rx_queue
1460 * calls dma_master for each RxD and mac_drv_clear_rxd for each
1463 * NOTE: calling sequence card_stop:
1464 * CLI_FBI(), card_stop(),
1465 * mac_drv_clear_tx_queue(), mac_drv_clear_rx_queue(),
1467 * NOTE: The caller is responsible that the BMUs are idle
1468 * when this function is called.
1472 void mac_drv_clear_rx_queue(struct s_smc *smc)
1474 struct s_smt_fp_rxd volatile *r ;
1475 struct s_smt_fp_rxd volatile *next_rxd ;
1476 struct s_smt_rx_queue *queue ;
1480 if (smc->hw.hw_state != STOPPED) {
1482 SMT_PANIC(smc,HWM_E0012,HWM_E0012_MSG) ;
1486 queue = smc->hw.fp.rx[QUEUE_R1] ;
1487 DB_RX("clear_rx_queue",0,0,5) ;
1490 * dma_complete and mac_drv_clear_rxd for all RxDs / receive buffers
1492 r = queue->rx_curr_get ;
1493 while (queue->rx_used) {
1494 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
1495 DB_RX("switch OWN bit of RxD 0x%x ",r,0,5) ;
1496 r->rxd_rbctrl &= ~cpu_to_le32(BMU_OWN) ;
1498 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
1500 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
1501 while (r != queue->rx_curr_put &&
1502 !(r->rxd_rbctrl & cpu_to_le32(BMU_ST_BUF))) {
1503 DB_RX("Check STF bit in %x",(void *)r,0,5) ;
1504 r->rxd_rbctrl &= ~cpu_to_le32(BMU_OWN) ;
1505 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
1507 DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
1510 DB_RX("STF bit found",0,0,5) ;
1513 for (r=queue->rx_curr_get,i=frag_count; i ; r=r->rxd_next,i--){
1514 DB_RX("dma_complete for RxD %x",(void *)r,0,5) ;
1515 dma_complete(smc,(union s_fp_descr volatile *)r,DMA_WR);
1518 DB_RX("mac_drv_clear_rxd: RxD %x frag_count %d ",
1519 (void *)queue->rx_curr_get,frag_count,5) ;
1520 mac_drv_clear_rxd(smc,queue->rx_curr_get,frag_count) ;
1522 queue->rx_curr_get = next_rxd ;
1523 queue->rx_used -= frag_count ;
1524 queue->rx_free += frag_count ;
1530 -------------------------------------------------------------
1532 -------------------------------------------------------------
1536 * BEGIN_MANUAL_ENTRY(hwm_tx_init)
1537 * int hwm_tx_init(smc,fc,frag_count,frame_len,frame_status)
1539 * function DOWN_CALL (hardware module, hwmtm.c)
1540 * hwm_tx_init checks if the frame can be sent through the
1541 * corresponding send queue.
1543 * para fc the frame control. To determine through which
1544 * send queue the frame should be transmitted.
1545 * 0x50 - 0x57: asynchronous LLC frame
1546 * 0xD0 - 0xD7: synchronous LLC frame
1547 * 0x41, 0x4F: SMT frame to the network
1548 * 0x42: SMT frame to the network and to the local SMT
1549 * 0x43: SMT frame to the local SMT
1550 * frag_count count of the fragments for this frame
1551 * frame_len length of the frame
1552 * frame_status status of the frame, the send queue bit is already
1555 * return frame_status
1559 int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, int frame_len,
1562 NDD_TRACE("THiB",fc,frag_count,frame_len) ;
1563 smc->os.hwm.tx_p = smc->hw.fp.tx[frame_status & QUEUE_A0] ;
1564 smc->os.hwm.tx_descr = TX_DESCRIPTOR | (((u_long)(frame_len-1)&3)<<27) ;
1565 smc->os.hwm.tx_len = frame_len ;
1566 DB_TX("hwm_tx_init: fc = %x, len = %d",fc,frame_len,3) ;
1567 if ((fc & ~(FC_SYNC_BIT|FC_LLC_PRIOR)) == FC_ASYNC_LLC) {
1568 frame_status |= LAN_TX ;
1574 frame_status |= LAN_TX ;
1577 frame_status |= LOC_TX ;
1579 case FC_SMT_LAN_LOC :
1580 frame_status |= LAN_TX | LOC_TX ;
1583 SMT_PANIC(smc,HWM_E0010,HWM_E0010_MSG) ;
1586 if (!smc->hw.mac_ring_is_up) {
1587 frame_status &= ~LAN_TX ;
1588 frame_status |= RING_DOWN ;
1589 DB_TX("Ring is down: terminate LAN_TX",0,0,2) ;
1591 if (frag_count > smc->os.hwm.tx_p->tx_free) {
1593 mac_drv_clear_txd(smc) ;
1594 if (frag_count > smc->os.hwm.tx_p->tx_free) {
1595 DB_TX("Out of TxDs, terminate LAN_TX",0,0,2) ;
1596 frame_status &= ~LAN_TX ;
1597 frame_status |= OUT_OF_TXD ;
1600 DB_TX("Out of TxDs, terminate LAN_TX",0,0,2) ;
1601 frame_status &= ~LAN_TX ;
1602 frame_status |= OUT_OF_TXD ;
1605 DB_TX("frame_status = %x",frame_status,0,3) ;
1606 NDD_TRACE("THiE",frame_status,smc->os.hwm.tx_p->tx_free,0) ;
1607 return(frame_status) ;
1611 * BEGIN_MANUAL_ENTRY(hwm_tx_frag)
1612 * void hwm_tx_frag(smc,virt,phys,len,frame_status)
1614 * function DOWNCALL (hardware module, hwmtm.c)
1615 * If the frame should be sent to the LAN, this function calls
1616 * dma_master, fills the current TxD with the virtual and the
1617 * physical address, sets the STF and EOF bits dependent on
1618 * the frame status, and requests the BMU to start the
1620 * If the frame should be sent to the local SMT, an SMT_MBuf
1621 * is allocated if the FIRST_FRAG bit is set in the frame_status.
1622 * The fragment of the frame is copied into the SMT MBuf.
1623 * The function smt_received_pack is called if the LAST_FRAG
1624 * bit is set in the frame_status word.
1626 * para virt virtual pointer to the fragment
1627 * len the length of the fragment
1628 * frame_status status of the frame, see design description
1630 * return nothing returned, no parameter is modified
1632 * NOTE: It is possible to invoke this macro with a fragment length
1637 void hwm_tx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
1640 struct s_smt_fp_txd volatile *t ;
1641 struct s_smt_tx_queue *queue ;
1644 queue = smc->os.hwm.tx_p ;
1646 NDD_TRACE("THfB",virt,len,frame_status) ;
1647 /* Bug fix: AF / May 31 1999 (#missing)
1648 * snmpinfo problem reported by IBM is caused by invalid
1649 * t-pointer (txd) if LAN_TX is not set but LOC_TX only.
1650 * Set: t = queue->tx_curr_put here !
1652 t = queue->tx_curr_put ;
1654 DB_TX("hwm_tx_frag: len = %d, frame_status = %x ",len,frame_status,2) ;
1655 if (frame_status & LAN_TX) {
1656 /* '*t' is already defined */
1657 DB_TX("LAN_TX: TxD = %x, virt = %x ",t,virt,3) ;
1658 t->txd_virt = virt ;
1659 t->txd_txdscr = cpu_to_le32(smc->os.hwm.tx_descr) ;
1660 t->txd_tbadr = cpu_to_le32(phys) ;
1661 tbctrl = cpu_to_le32((((__u32)frame_status &
1662 (FIRST_FRAG|LAST_FRAG|EN_IRQ_EOF))<< 26) |
1663 BMU_OWN|BMU_CHECK |len) ;
1664 t->txd_tbctrl = tbctrl ;
1667 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
1668 outpd(queue->tx_bmu_ctl,CSR_START) ;
1669 #else /* ifndef AIX */
1670 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
1671 if (frame_status & QUEUE_A0) {
1672 outpd(ADDR(B0_XA_CSR),CSR_START) ;
1675 outpd(ADDR(B0_XS_CSR),CSR_START) ;
1680 queue->tx_curr_put = t->txd_next ;
1681 if (frame_status & LAST_FRAG) {
1682 smc->mib.m[MAC0].fddiMACTransmit_Ct++ ;
1685 if (frame_status & LOC_TX) {
1686 DB_TX("LOC_TX: ",0,0,3) ;
1687 if (frame_status & FIRST_FRAG) {
1688 if(!(smc->os.hwm.tx_mb = smt_get_mbuf(smc))) {
1689 smc->hw.fp.err_stats.err_no_buf++ ;
1690 DB_TX("No SMbuf; transmit terminated",0,0,4) ;
1693 smc->os.hwm.tx_data =
1694 smtod(smc->os.hwm.tx_mb,char *) - 1 ;
1696 #ifdef PASS_1ST_TXD_2_TX_COMP
1697 hwm_cpy_txd2mb(t,smc->os.hwm.tx_data,
1698 smc->os.hwm.tx_len) ;
1703 if (smc->os.hwm.tx_mb) {
1705 DB_TX("copy fragment into MBuf ",0,0,3) ;
1706 memcpy(smc->os.hwm.tx_data,virt,len) ;
1707 smc->os.hwm.tx_data += len ;
1709 if (frame_status & LAST_FRAG) {
1711 #ifndef PASS_1ST_TXD_2_TX_COMP
1713 * hwm_cpy_txd2mb(txd,data,len) copies 'len'
1714 * bytes from the virtual pointer in 'rxd'
1715 * to 'data'. The virtual pointer of the
1716 * os-specific tx-buffer should be written
1719 hwm_cpy_txd2mb(t,smc->os.hwm.tx_data,
1720 smc->os.hwm.tx_len) ;
1721 #endif /* nPASS_1ST_TXD_2_TX_COMP */
1722 #endif /* USE_OS_CPY */
1723 smc->os.hwm.tx_data =
1724 smtod(smc->os.hwm.tx_mb,char *) - 1 ;
1725 *(char *)smc->os.hwm.tx_mb->sm_data =
1726 *smc->os.hwm.tx_data ;
1727 smc->os.hwm.tx_data++ ;
1728 smc->os.hwm.tx_mb->sm_len =
1729 smc->os.hwm.tx_len - 1 ;
1730 DB_TX("pass LLC frame to SMT ",0,0,3) ;
1731 smt_received_pack(smc,smc->os.hwm.tx_mb,
1736 NDD_TRACE("THfE",t,queue->tx_free,0) ;
1741 * queues a receive for later send
1743 static void queue_llc_rx(struct s_smc *smc, SMbuf *mb)
1745 DB_GEN("queue_llc_rx: mb = %x",(void *)mb,0,4) ;
1746 smc->os.hwm.queued_rx_frames++ ;
1747 mb->sm_next = (SMbuf *)NULL ;
1748 if (smc->os.hwm.llc_rx_pipe == NULL) {
1749 smc->os.hwm.llc_rx_pipe = mb ;
1752 smc->os.hwm.llc_rx_tail->sm_next = mb ;
1754 smc->os.hwm.llc_rx_tail = mb ;
1757 * force an timer IRQ to receive the data
1759 if (!smc->os.hwm.isr_flag) {
1760 smt_force_irq(smc) ;
1765 * get a SMbuf from the llc_rx_queue
1767 static SMbuf *get_llc_rx(struct s_smc *smc)
1771 if ((mb = smc->os.hwm.llc_rx_pipe)) {
1772 smc->os.hwm.queued_rx_frames-- ;
1773 smc->os.hwm.llc_rx_pipe = mb->sm_next ;
1775 DB_GEN("get_llc_rx: mb = 0x%x",(void *)mb,0,4) ;
1780 * queues a transmit SMT MBuf during the time were the MBuf is
1781 * queued the TxD ring
1783 static void queue_txd_mb(struct s_smc *smc, SMbuf *mb)
1785 DB_GEN("_rx: queue_txd_mb = %x",(void *)mb,0,4) ;
1786 smc->os.hwm.queued_txd_mb++ ;
1787 mb->sm_next = (SMbuf *)NULL ;
1788 if (smc->os.hwm.txd_tx_pipe == NULL) {
1789 smc->os.hwm.txd_tx_pipe = mb ;
1792 smc->os.hwm.txd_tx_tail->sm_next = mb ;
1794 smc->os.hwm.txd_tx_tail = mb ;
1798 * get a SMbuf from the txd_tx_queue
1800 static SMbuf *get_txd_mb(struct s_smc *smc)
1804 if ((mb = smc->os.hwm.txd_tx_pipe)) {
1805 smc->os.hwm.queued_txd_mb-- ;
1806 smc->os.hwm.txd_tx_pipe = mb->sm_next ;
1808 DB_GEN("get_txd_mb: mb = 0x%x",(void *)mb,0,4) ;
1815 void smt_send_mbuf(struct s_smc *smc, SMbuf *mb, int fc)
1823 SK_LOC_DECL(char far,*virt[3]) ;
1825 struct s_smt_tx_queue *queue ;
1826 struct s_smt_fp_txd volatile *t ;
1830 NDD_TRACE("THSB",mb,fc,0) ;
1831 DB_TX("smt_send_mbuf: mb = 0x%x, fc = 0x%x",mb,fc,4) ;
1833 mb->sm_off-- ; /* set to fc */
1834 mb->sm_len++ ; /* + fc */
1835 data = smtod(mb,char *) ;
1837 if (fc == FC_SMT_LOC)
1838 *data = FC_SMT_INFO ;
1841 * determine the frag count and the virt addresses of the frags
1846 n = SMT_PAGESIZE - ((long)data & (SMT_PAGESIZE-1)) ;
1850 DB_TX("frag: virt/len = 0x%x/%d ",(void *)data,n,5) ;
1851 virt[frag_count] = data ;
1852 frag_len[frag_count] = n ;
1859 * determine the frame status
1861 queue = smc->hw.fp.tx[QUEUE_A0] ;
1862 if (fc == FC_BEACON || fc == FC_SMT_LOC) {
1863 frame_status = LOC_TX ;
1866 frame_status = LAN_TX ;
1867 if ((smc->os.hwm.pass_NSA &&(fc == FC_SMT_NSA)) ||
1868 (smc->os.hwm.pass_SMT &&(fc == FC_SMT_INFO)))
1869 frame_status |= LOC_TX ;
1872 if (!smc->hw.mac_ring_is_up || frag_count > queue->tx_free) {
1873 frame_status &= ~LAN_TX;
1875 DB_TX("Ring is down: terminate LAN_TX",0,0,2) ;
1878 DB_TX("Ring is down: terminate transmission",0,0,2) ;
1879 smt_free_mbuf(smc,mb) ;
1883 DB_TX("frame_status = 0x%x ",frame_status,0,5) ;
1885 if ((frame_status & LAN_TX) && (frame_status & LOC_TX)) {
1886 mb->sm_use_count = 2 ;
1889 if (frame_status & LAN_TX) {
1890 t = queue->tx_curr_put ;
1891 frame_status |= FIRST_FRAG ;
1892 for (i = 0; i < frag_count; i++) {
1893 DB_TX("init TxD = 0x%x",(void *)t,0,5) ;
1894 if (i == frag_count-1) {
1895 frame_status |= LAST_FRAG ;
1896 t->txd_txdscr = cpu_to_le32(TX_DESCRIPTOR |
1897 (((__u32)(mb->sm_len-1)&3) << 27)) ;
1899 t->txd_virt = virt[i] ;
1900 phys = dma_master(smc, (void far *)virt[i],
1901 frag_len[i], DMA_RD|SMT_BUF) ;
1902 t->txd_tbadr = cpu_to_le32(phys) ;
1903 tbctrl = cpu_to_le32((((__u32)frame_status &
1904 (FIRST_FRAG|LAST_FRAG)) << 26) |
1905 BMU_OWN | BMU_CHECK | BMU_SMT_TX |frag_len[i]) ;
1906 t->txd_tbctrl = tbctrl ;
1908 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
1909 outpd(queue->tx_bmu_ctl,CSR_START) ;
1911 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
1912 outpd(ADDR(B0_XA_CSR),CSR_START) ;
1914 frame_status &= ~FIRST_FRAG ;
1915 queue->tx_curr_put = t = t->txd_next ;
1919 smc->mib.m[MAC0].fddiMACTransmit_Ct++ ;
1920 queue_txd_mb(smc,mb) ;
1923 if (frame_status & LOC_TX) {
1924 DB_TX("pass Mbuf to LLC queue",0,0,5) ;
1925 queue_llc_rx(smc,mb) ;
1929 * We need to unqueue the free SMT_MBUFs here, because it may
1930 * be that the SMT want's to send more than 1 frame for one down call
1932 mac_drv_clear_txd(smc) ;
1933 NDD_TRACE("THSE",t,queue->tx_free,frag_count) ;
1936 /* BEGIN_MANUAL_ENTRY(mac_drv_clear_txd)
1937 * void mac_drv_clear_txd(smc)
1939 * function DOWNCALL (hardware module, hwmtm.c)
1940 * mac_drv_clear_txd searches in both send queues for TxD's
1941 * which were finished by the adapter. It calls dma_complete
1942 * for each TxD. If the last fragment of an LLC frame is
1943 * reached, it calls mac_drv_tx_complete to release the
1950 static void mac_drv_clear_txd(struct s_smc *smc)
1952 struct s_smt_tx_queue *queue ;
1953 struct s_smt_fp_txd volatile *t1 ;
1954 struct s_smt_fp_txd volatile *t2 = NULL ;
1961 NDD_TRACE("THcB",0,0,0) ;
1962 for (i = QUEUE_S; i <= QUEUE_A0; i++) {
1963 queue = smc->hw.fp.tx[i] ;
1964 t1 = queue->tx_curr_get ;
1965 DB_TX("clear_txd: QUEUE = %d (0=sync/1=async)",i,0,5) ;
1971 DRV_BUF_FLUSH(t1,DDI_DMA_SYNC_FORCPU) ;
1972 DB_TX("check OWN/EOF bit of TxD 0x%x",t1,0,5) ;
1973 tbctrl = le32_to_cpu(CR_READ(t1->txd_tbctrl));
1975 if (tbctrl & BMU_OWN || !queue->tx_used){
1976 DB_TX("End of TxDs queue %d",i,0,4) ;
1977 goto free_next_queue ; /* next queue */
1981 } while (!(tbctrl & BMU_EOF)) ;
1983 t1 = queue->tx_curr_get ;
1984 for (n = frag_count; n; n--) {
1985 tbctrl = le32_to_cpu(t1->txd_tbctrl) ;
1987 (union s_fp_descr volatile *) t1,
1989 ((tbctrl & BMU_SMT_TX) >> 18))) ;
1994 if (tbctrl & BMU_SMT_TX) {
1995 mb = get_txd_mb(smc) ;
1996 smt_free_mbuf(smc,mb) ;
1999 #ifndef PASS_1ST_TXD_2_TX_COMP
2000 DB_TX("mac_drv_tx_comp for TxD 0x%x",t2,0,4) ;
2001 mac_drv_tx_complete(smc,t2) ;
2003 DB_TX("mac_drv_tx_comp for TxD 0x%x",
2004 queue->tx_curr_get,0,4) ;
2005 mac_drv_tx_complete(smc,queue->tx_curr_get) ;
2008 queue->tx_curr_get = t1 ;
2009 queue->tx_free += frag_count ;
2010 queue->tx_used -= frag_count ;
2014 NDD_TRACE("THcE",0,0,0) ;
2018 * BEGINN_MANUAL_ENTRY(mac_drv_clear_tx_queue)
2020 * void mac_drv_clear_tx_queue(smc)
2021 * struct s_smc *smc ;
2023 * function DOWNCALL (hardware module, hwmtm.c)
2024 * mac_drv_clear_tx_queue is called from the SMT when
2025 * the RMT state machine has entered the ISOLATE state.
2026 * This function is also called by the os-specific module
2027 * after it has called the function card_stop().
2028 * In this case, the frames in the send queues are obsolete and
2029 * should be removed.
2031 * note calling sequence:
2032 * CLI_FBI(), card_stop(),
2033 * mac_drv_clear_tx_queue(), mac_drv_clear_rx_queue(),
2035 * NOTE: The caller is responsible that the BMUs are idle
2036 * when this function is called.
2040 void mac_drv_clear_tx_queue(struct s_smc *smc)
2042 struct s_smt_fp_txd volatile *t ;
2043 struct s_smt_tx_queue *queue ;
2047 if (smc->hw.hw_state != STOPPED) {
2049 SMT_PANIC(smc,HWM_E0011,HWM_E0011_MSG) ;
2053 for (i = QUEUE_S; i <= QUEUE_A0; i++) {
2054 queue = smc->hw.fp.tx[i] ;
2055 DB_TX("clear_tx_queue: QUEUE = %d (0=sync/1=async)",i,0,5) ;
2058 * switch the OWN bit of all pending frames to the host
2060 t = queue->tx_curr_get ;
2061 tx_used = queue->tx_used ;
2063 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORCPU) ;
2064 DB_TX("switch OWN bit of TxD 0x%x ",t,0,5) ;
2065 t->txd_tbctrl &= ~cpu_to_le32(BMU_OWN) ;
2066 DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
2073 * release all TxD's for both send queues
2075 mac_drv_clear_txd(smc) ;
2077 for (i = QUEUE_S; i <= QUEUE_A0; i++) {
2078 queue = smc->hw.fp.tx[i] ;
2079 t = queue->tx_curr_get ;
2082 * write the phys pointer of the NEXT descriptor into the
2083 * BMU's current address descriptor pointer and set
2084 * tx_curr_get and tx_curr_put to this position
2087 outpd(ADDR(B5_XS_DA),le32_to_cpu(t->txd_ntdadr)) ;
2090 outpd(ADDR(B5_XA_DA),le32_to_cpu(t->txd_ntdadr)) ;
2093 queue->tx_curr_put = queue->tx_curr_get->txd_next ;
2094 queue->tx_curr_get = queue->tx_curr_put ;
2100 -------------------------------------------------------------
2102 -------------------------------------------------------------
2107 * BEGIN_MANUAL_ENTRY(mac_drv_debug_lev)
2108 * void mac_drv_debug_lev(smc,flag,lev)
2110 * function DOWNCALL (drvsr.c)
2111 * To get a special debug info the user can assign a debug level
2112 * to any debug flag.
2114 * para flag debug flag, possible values are:
2115 * = 0: reset all debug flags (the defined level is
2124 * = 10: debug.d_os.hwm_rx (hardware module receive path)
2125 * = 11: debug.d_os.hwm_tx(hardware module transmit path)
2126 * = 12: debug.d_os.hwm_gen(hardware module general flag)
2132 void mac_drv_debug_lev(struct s_smc *smc, int flag, int lev)
2136 DB_P.d_smtf = DB_P.d_smt = DB_P.d_ecm = DB_P.d_rmt = 0 ;
2138 DB_P.d_os.hwm_rx = DB_P.d_os.hwm_tx = DB_P.d_os.hwm_gen = 0 ;
2175 DB_P.d_os.hwm_rx = lev ;
2178 DB_P.d_os.hwm_tx = lev ;
2181 DB_P.d_os.hwm_gen = lev ;