45 static void ct_hdlc_interrupt (ct_chan_t *c, int imvr);
48 static void ct_e1timer_interrupt (ct_chan_t *c);
67 	ct_chan_t *c;  in ct_open_board()  local
76 	for (c=b->chan; c<b->chan+NCHAN; ++c) {  in ct_open_board()
77 		c->call_on_tx = 0;  in ct_open_board()
78 		c->call_on_rx = 0;  in ct_open_board()
79 		c->call_on_msig = 0;  in ct_open_board()
80 		c->call_on_scc = 0;  in ct_open_board()
81 		c->call_on_err = 0;  in ct_open_board()
85 	for (c=b->chan; c<b->chan+NCHAN; ++c) {  in ct_open_board()
86 		c->sccrx_empty = c->scctx_empty = 1;  in ct_open_board()
87 		c->sccrx_b = c->sccrx_e = 0;  in ct_open_board()
88 		c->scctx_b = c->scctx_e = 0;  in ct_open_board()
89 		c->e1_first_int = 1;  in ct_open_board()
144 static void ct_g703_rate (ct_chan_t *c, unsigned long rate)  in ct_g703_rate()  argument
146 	c->gopt.rate = rate;  in ct_g703_rate()
147 	ct_setup_g703 (c->board);  in ct_g703_rate()
153 static void ct_chan_baud (ct_chan_t *c, unsigned long baud)  in ct_chan_baud()  argument
155 	c->baud = baud;  in ct_chan_baud()
157 		c->hopt.txs = CLK_INT;  in ct_chan_baud()
159 		ct_set_dpll (c, 0);  in ct_chan_baud()
160 		c->hopt.txs = CLK_LINE;  in ct_chan_baud()
162 	ct_update_chan (c);  in ct_chan_baud()
165 void ct_set_baud (ct_chan_t *c, unsigned long baud)  in ct_set_baud()  argument
169 	if (c->mode == M_E1)  in ct_set_baud()
171 	if (c->mode == M_G703) {  in ct_set_baud()
178 		ct_g703_rate (c, r);  in ct_set_baud()
180 		ct_chan_baud (c, baud);  in ct_set_baud()
231 int ct_set_clk (ct_chan_t *c, int clk)  in ct_set_clk()  argument
233 	if (c->num)  in ct_set_clk()
234 		c->board->opt.clk1 = clk;  in ct_set_clk()
236 		c->board->opt.clk0 = clk;  in ct_set_clk()
237 	if (c->mode == M_E1) {  in ct_set_clk()
238 		ct_setup_e1 (c->board);  in ct_set_clk()
240 	} if (c->mode == M_G703) {  in ct_set_clk()
241 		ct_setup_g703 (c->board);  in ct_set_clk()
247 int ct_get_clk (ct_chan_t *c)  in ct_get_clk()  argument
249 	return c->num ? c->board->opt.clk1 : c->board->opt.clk0;  in ct_get_clk()
252 int ct_set_ts (ct_chan_t *c, unsigned long ts)  in ct_set_ts()  argument
254 	if (! (c->mode == M_E1))  in ct_set_ts()
256 	if (c->num)  in ct_set_ts()
257 		c->board->opt.s1 = ts;  in ct_set_ts()
259 		c->board->opt.s0 = ts;  in ct_set_ts()
260 	ct_setup_e1 (c->board);  in ct_set_ts()
273 int ct_set_higain (ct_chan_t *c, int on)  in ct_set_higain()  argument
275 	if (! (c->mode == M_E1))  in ct_set_higain()
277 	c->gopt.higain = on ? 1 : 0;  in ct_set_higain()
278 	ct_setup_e1 (c->board);  in ct_set_higain()
285 void ct_start_scc (ct_chan_t *c, char *rxbuf, char *txbuf)  in ct_start_scc()  argument
287 	c->sccrx = rxbuf;  in ct_start_scc()
288 	c->scctx = txbuf;  in ct_start_scc()
291 	if (c->board->type != B_TAU_E1 && c->board->type != B_TAU_E1C &&  in ct_start_scc()
292 	    c->board->type != B_TAU2_E1)  in ct_start_scc()
295 	cte_out2 (c->board->port, c->num ? AM_IMR : AM_IMR | AM_A,  in ct_start_scc()
297 	cte_out2 (c->board->port, AM_MICR, MICR_MIE);  in ct_start_scc()
303 void ct_start_chan (ct_chan_t *c, ct_buf_t *cb, unsigned long phys)  in ct_start_chan()  argument
313 		c->tdesc = cb->descbuf;  in ct_start_chan()
314 		c->tdphys[0] = phys + ((char*)c->tdesc - (char*)cb);  in ct_start_chan()
315 		bound = ((c->tdphys[0] + 0xffff) & ~(0xffffUL));  in ct_start_chan()
316 		if (bound < c->tdphys[0] + 2*NBUF*sizeof(ct_desc_t)) {  in ct_start_chan()
317 			c->tdesc = (ct_desc_t*) ((char*) c->tdesc +  in ct_start_chan()
318 				(bound - c->tdphys[0]));  in ct_start_chan()
319 			c->tdphys[0] = bound;  in ct_start_chan()
321 		c->rdesc = c->tdesc + NBUF;  in ct_start_chan()
325 			c->rbuf[i] = cb->rbuffer[i];  in ct_start_chan()
326 			c->tbuf[i] = cb->tbuffer[i];  in ct_start_chan()
331 			c->rphys[i] = phys + ((char*)c->rbuf[i] - (char*)cb);  in ct_start_chan()
332 			c->tphys[i] = phys + ((char*)c->tbuf[i] - (char*)cb);  in ct_start_chan()
333 			c->rdphys[i] = phys + ((char*)(c->rdesc+i) - (char*)cb);  in ct_start_chan()
334 			c->tdphys[i] = phys + ((char*)(c->tdesc+i) - (char*)cb);  in ct_start_chan()
340 		B_NEXT (c->rdesc[i]) = c->rdphys[(i+1) % NBUF] & 0xffff;  in ct_start_chan()
341 		B_PTR (c->rdesc[i]) = c->rphys[i];  in ct_start_chan()
342 		B_LEN (c->rdesc[i]) = DMABUFSZ;  in ct_start_chan()
343 		B_STATUS (c->rdesc[i]) = 0;  in ct_start_chan()
347 		B_NEXT (c->tdesc[i]) = c->tdphys[(i+1) % NBUF] & 0xffff;  in ct_start_chan()
348 		B_PTR (c->tdesc[i]) = c->tphys[i];  in ct_start_chan()
349 		B_LEN (c->tdesc[i]) = DMABUFSZ;  in ct_start_chan()
350 		B_STATUS (c->tdesc[i]) = FST_EOM;  in ct_start_chan()
351 		c->attach[i] = 0;  in ct_start_chan()
354 	if (c->type & T_E1) {  in ct_start_chan()
355 		c->mode = M_E1;  in ct_start_chan()
356 		if (c->num && c->board->opt.cfg == CFG_B)  in ct_start_chan()
357 			c->mode = M_HDLC;  in ct_start_chan()
359 	if (c->type & T_G703) {  in ct_start_chan()
360 		c->mode = M_G703;  in ct_start_chan()
361 		if (c->num && c->board->opt.cfg == CFG_B)  in ct_start_chan()
362 			c->mode = M_HDLC;  in ct_start_chan()
364 	ct_update_chan (c);  in ct_start_chan()
367 	c->rn = 0;  in ct_start_chan()
368 	ct_start_receiver (c, 1 , c->rphys[0], DMABUFSZ, c->rdphys[0],  in ct_start_chan()
369 		c->rdphys[NBUF-1]);  in ct_start_chan()
370 	outb (c->IE1, inb (c->IE1) | IE1_CDCDE);  in ct_start_chan()
371 	outb (c->IE0, inb (c->IE0) | IE0_RX_INTE);  in ct_start_chan()
372 	ier0 = inb (IER0(c->board->port));  in ct_start_chan()
373 	ier0 |= c->num ? IER0_RX_INTE_1 : IER0_RX_INTE_0;  in ct_start_chan()
374 	outb (IER0(c->board->port), ier0);  in ct_start_chan()
377 	c->tn = 0;  in ct_start_chan()
378 	c->te = 0;  in ct_start_chan()
379 	ct_start_transmitter (c, 1 , c->tphys[0], DMABUFSZ, c->tdphys[0],  in ct_start_chan()
380 		c->tdphys[0]);  in ct_start_chan()
381 	outb (c->TX.DIR, DIR_CHAIN_EOME | DIR_CHAIN_BOFE | DIR_CHAIN_COFE);  in ct_start_chan()
384 	ct_set_dtr (c, 0);  in ct_start_chan()
385 	ct_set_rts (c, 0);  in ct_start_chan()
391 void ct_enable_receive (ct_chan_t *c, int on)  in ct_enable_receive()  argument
395 	st3 = inb (c->ST3);  in ct_enable_receive()
398 		c->rn = 0;  in ct_enable_receive()
399 		ct_start_receiver (c, 1 , c->rphys[0], DMABUFSZ, c->rdphys[0],  in ct_enable_receive()
400 			c->rdphys[NBUF-1]);  in ct_enable_receive()
402 		outb (c->IE1, inb (c->IE1) | IE1_CDCDE);  in ct_enable_receive()
403 		outb (c->IE0, inb (c->IE0) | IE0_RX_INTE);  in ct_enable_receive()
404 		ier0 = inb (IER0(c->board->port));  in ct_enable_receive()
405 		ier0 |= c->num ? IER0_RX_INTE_1 : IER0_RX_INTE_0;  in ct_enable_receive()
406 		outb (IER0(c->board->port), ier0);  in ct_enable_receive()
407 		ct_set_rts (c, 1);  in ct_enable_receive()
409 		ct_set_rts (c, 0);  in ct_enable_receive()
410 		outb (c->CMD, CMD_RX_DISABLE);  in ct_enable_receive()
412 		ier0 = inb (IER0(c->board->port));  in ct_enable_receive()
413 		ier0 &= c->num ? ~(IER0_RX_INTE_1 | IER0_RX_RDYE_1) :  in ct_enable_receive()
415 		outb (IER0(c->board->port), ier0);  in ct_enable_receive()
417 		ier1 = inb (IER1(c->board->port));  in ct_enable_receive()
418 		ier1 &= c->num ? ~(IER1_RX_DMERE_1 | IER1_RX_DME_1) :  in ct_enable_receive()
420 		outb (IER1(c->board->port), ier1);  in ct_enable_receive()
428 void ct_enable_transmit (ct_chan_t *c, int on)  in ct_enable_transmit()  argument
432 	st3 = inb (c->ST3);  in ct_enable_transmit()
435 		c->tn = 0;  in ct_enable_transmit()
436 		c->te = 0;  in ct_enable_transmit()
437 		ct_start_transmitter (c, 1 , c->tphys[0], DMABUFSZ,  in ct_enable_transmit()
438 			c->tdphys[0], c->tdphys[0]);  in ct_enable_transmit()
439 		outb (c->TX.DIR,  in ct_enable_transmit()
442 		outb (c->CMD, CMD_TX_DISABLE);  in ct_enable_transmit()
444 		ier0 = inb (IER0(c->board->port));  in ct_enable_transmit()
445 		ier0 &= c->num ? ~(IER0_TX_INTE_1 | IER0_TX_RDYE_1) :  in ct_enable_transmit()
447 		outb (IER0(c->board->port), ier0);  in ct_enable_transmit()
449 		ier1 = inb (IER1(c->board->port));  in ct_enable_transmit()
450 		ier1 &= c->num ? ~(IER1_TX_DMERE_1 | IER1_TX_DME_1) :  in ct_enable_transmit()
452 		outb (IER1(c->board->port), ier1);  in ct_enable_transmit()
481 int ct_get_dpll (ct_chan_t *c)  in ct_get_dpll()  argument
483 	return (c->hopt.rxs == CLK_RXS_DPLL_INT);  in ct_get_dpll()
486 void ct_set_dpll (ct_chan_t *c, int on)  in ct_set_dpll()  argument
488 	if (on && ct_get_baud (c))  in ct_set_dpll()
489 		c->hopt.rxs = CLK_RXS_DPLL_INT;  in ct_set_dpll()
491 		c->hopt.rxs = CLK_LINE;  in ct_set_dpll()
492 	ct_update_chan (c);  in ct_set_dpll()
495 int ct_get_nrzi (ct_chan_t *c)  in ct_get_nrzi()  argument
497 	return (c->opt.md2.encod == MD2_ENCOD_NRZI);  in ct_get_nrzi()
503 void ct_set_nrzi (ct_chan_t *c, int on)  in ct_set_nrzi()  argument
505 	c->opt.md2.encod = on ? MD2_ENCOD_NRZI : MD2_ENCOD_NRZ;  in ct_set_nrzi()
506 	outb (c->MD2, *(unsigned char*)&c->opt.md2);  in ct_set_nrzi()
512 void ct_set_invtxc (ct_chan_t *c, int on)  in ct_set_invtxc()  argument
514 	if (on) c->board->bcr2 |=  (c->num ? BCR2_INVTXC1 : BCR2_INVTXC0);  in ct_set_invtxc()
515 	else	c->board->bcr2 &= ~(c->num ? BCR2_INVTXC1 : BCR2_INVTXC0);  in ct_set_invtxc()
516 	outb (BCR2(c->board->port), c->board->bcr2);  in ct_set_invtxc()
519 int ct_get_invtxc (ct_chan_t *c)  in ct_get_invtxc()  argument
521 	return (c->board->bcr2 & (c->num ? BCR2_INVTXC1 : BCR2_INVTXC0)) != 0;  in ct_get_invtxc()
527 void ct_set_invrxc (ct_chan_t *c, int on)  in ct_set_invrxc()  argument
529 	if (on) c->board->bcr2 |=  (c->num ? BCR2_INVRXC1 : BCR2_INVRXC0);  in ct_set_invrxc()
530 	else	c->board->bcr2 &= ~(c->num ? BCR2_INVRXC1 : BCR2_INVRXC0);  in ct_set_invrxc()
531 	outb (BCR2(c->board->port), c->board->bcr2);  in ct_set_invrxc()
534 int ct_get_invrxc (ct_chan_t *c)  in ct_get_invrxc()  argument
536 	return (c->board->bcr2 & (c->num ? BCR2_INVRXC1 : BCR2_INVRXC0)) != 0;  in ct_get_invrxc()
545 	ct_chan_t *c;  in ct_int_handler()  local
558 			c = b->chan + (imvr & IMVR_CHAN1 ? 1 : 0);  in ct_int_handler()
559 			ct_hdlc_interrupt (c, imvr);  in ct_int_handler()
579 	ct_chan_t *c = b->chan;  in ct_scc_interrupt()  local
583 		++c, a = 0;			/* really channel B */  in ct_scc_interrupt()
587 		c->scctx_b = (c->scctx_b + 1) % SCCBUFSZ;  in ct_scc_interrupt()
588 		if (c->scctx_b == c->scctx_e) {  in ct_scc_interrupt()
589 			c->scctx_empty = 1;  in ct_scc_interrupt()
590 			cte_out2c (c, AM_CR | CR_RST_TXINT);  in ct_scc_interrupt()
592 			cte_out2d (c, c->scctx[c->scctx_b]);  in ct_scc_interrupt()
600 			if (c->call_on_err)  in ct_scc_interrupt()
601 				c->call_on_err (c, CT_SCC_OVERRUN);  in ct_scc_interrupt()
603 			if (c->call_on_err)  in ct_scc_interrupt()
604 				c->call_on_err (c, CT_SCC_FRAME);  in ct_scc_interrupt()
606 			c->sccrx[c->sccrx_e] = cte_in2d (c);  in ct_scc_interrupt()
607 			c->sccrx_e = (c->sccrx_e + 1) % SCCBUFSZ;  in ct_scc_interrupt()
608 			c->sccrx_empty &= 0;  in ct_scc_interrupt()
609 			if (c->call_on_scc)  in ct_scc_interrupt()
610 				c->call_on_scc (c);  in ct_scc_interrupt()
611 			if (c->sccrx_e == c->sccrx_b && ! c->sccrx_empty)  in ct_scc_interrupt()
612 				if (c->call_on_err)  in ct_scc_interrupt()
613 					c->call_on_err (c, CT_SCC_OVERFLOW);  in ct_scc_interrupt()
616 			cte_out2c (c, CR_RST_ERROR);  in ct_scc_interrupt()
621 		cte_out2c (c, CR_RST_EXTINT);  in ct_scc_interrupt()
630 void ct_g703_timer (ct_chan_t *c)  in ct_g703_timer()  argument
638 	++c->cursec;  in ct_g703_timer()
639 	if (c->mode != M_G703)  in ct_g703_timer()
641 	if (c->totsec + c->cursec <= 1)  in ct_g703_timer()
643 	c->status = 0;  in ct_g703_timer()
645 	cd = ct_get_cd (c);  in ct_g703_timer()
647 	bpv = inb (GERR (c->board->port)) & (c->num ? GERR_BPV1 : GERR_BPV0);  in ct_g703_timer()
648 	outb (GERR (c->board->port), bpv);  in ct_g703_timer()
650 	tsterr = inb (GERR (c->board->port)) & (c->num ? GERR_ERR1 : GERR_ERR0);  in ct_g703_timer()
651 	outb (GERR (c->board->port), tsterr);  in ct_g703_timer()
653 	tstreq = inb (GLDR (c->board->port)) &  in ct_g703_timer()
654 		(c->num ? GLDR_LREQ1 : GLDR_LREQ0);  in ct_g703_timer()
655 	outb (GLDR (c->board->port), tstreq);  in ct_g703_timer()
659 		++c->currnt.bpv;	  /* bipolar violation */  in ct_g703_timer()
661 		c->status |= ESTS_LOS;	  /* loss of signal */  in ct_g703_timer()
663 		c->status |= ESTS_TSTERR; /* test error */  in ct_g703_timer()
665 		c->status |= ESTS_TSTREQ; /* test code detected */  in ct_g703_timer()
667 	if (! c->status)  in ct_g703_timer()
668 		c->status = ESTS_NOALARM;  in ct_g703_timer()
673 		++c->currnt.uas;  in ct_g703_timer()
677 			++c->currnt.les;  in ct_g703_timer()
681 		++c->degsec;  in ct_g703_timer()
683 			++c->degerr;  in ct_g703_timer()
687 	if (c->cursec / 60 == 0) {  in ct_g703_timer()
688 		if (c->degerr*2 > c->degsec)  in ct_g703_timer()
689 			++c->currnt.dm;  in ct_g703_timer()
690 		c->degsec = 0;  in ct_g703_timer()
691 		c->degerr = 0;  in ct_g703_timer()
695 	if (c->cursec > 15*60) {  in ct_g703_timer()
699 			c->interval[i] = c->interval[i-1];  in ct_g703_timer()
700 		c->interval[0] = c->currnt;  in ct_g703_timer()
703 		c->total.bpv   += c->currnt.bpv;  in ct_g703_timer()
704 		c->total.fse   += c->currnt.fse;  in ct_g703_timer()
705 		c->total.crce  += c->currnt.crce;  in ct_g703_timer()
706 		c->total.rcrce += c->currnt.rcrce;  in ct_g703_timer()
707 		c->total.uas   += c->currnt.uas;  in ct_g703_timer()
708 		c->total.les   += c->currnt.les;  in ct_g703_timer()
709 		c->total.es    += c->currnt.es;  in ct_g703_timer()
710 		c->total.bes   += c->currnt.bes;  in ct_g703_timer()
711 		c->total.ses   += c->currnt.ses;  in ct_g703_timer()
712 		c->total.oofs  += c->currnt.oofs;  in ct_g703_timer()
713 		c->total.css   += c->currnt.css;  in ct_g703_timer()
714 		c->total.dm    += c->currnt.dm;  in ct_g703_timer()
715 		memset (&c->currnt, 0, sizeof (c->currnt));  in ct_g703_timer()
717 		c->totsec += c->cursec;  in ct_g703_timer()
718 		c->cursec = 0;  in ct_g703_timer()
722 static void ct_e1timer_interrupt (ct_chan_t *c)  in ct_e1timer_interrupt()  argument
728 	port = c->num ? E1CS1(c->board->port) : E1CS0(c->board->port);  in ct_e1timer_interrupt()
736 	if (c->e1_first_int > 0) {  in ct_e1timer_interrupt()
737 		c->e1_first_int --;  in ct_e1timer_interrupt()
741 	++c->cursec;  in ct_e1timer_interrupt()
742 	c->status = 0;  in ct_e1timer_interrupt()
750 		c->status |= ESTS_LOS;		/* loss of signal */  in ct_e1timer_interrupt()
752 		c->status |= ESTS_AIS;		/* receiving all ones */  in ct_e1timer_interrupt()
753 	if (c->gopt.cas && (sr1 & SR1_RSA1))  in ct_e1timer_interrupt()
754 		c->status |= ESTS_AIS16;	/* signaling all ones */  in ct_e1timer_interrupt()
755 	if (c->gopt.cas && (sr1 & SR1_RDMA))  in ct_e1timer_interrupt()
756 		c->status |= ESTS_FARLOMF;	/* alarm in timeslot 16 */  in ct_e1timer_interrupt()
758 		c->status |= ESTS_FARLOF;	/* far loss of framing */  in ct_e1timer_interrupt()
762 		++c->currnt.css;  in ct_e1timer_interrupt()
766 		c->status |= ESTS_LOF;		/* loss of framing */  in ct_e1timer_interrupt()
769 	if ((c->gopt.cas && (ssr & SSR_SYNC_CAS)) ||  in ct_e1timer_interrupt()
770 	    (c->gopt.crc4 && (ssr & SSR_SYNC_CRC4))) {  in ct_e1timer_interrupt()
771 		c->status |= ESTS_LOMF; 	/* loss of multiframing */  in ct_e1timer_interrupt()
775 	if (! c->status)  in ct_e1timer_interrupt()
776 		c->status = ESTS_NOALARM;  in ct_e1timer_interrupt()
784 	c->currnt.bpv += bpv;  in ct_e1timer_interrupt()
785 	c->currnt.fse += fas;  in ct_e1timer_interrupt()
786 	if (c->gopt.crc4) {  in ct_e1timer_interrupt()
787 		c->currnt.crce += crc4;  in ct_e1timer_interrupt()
788 		c->currnt.rcrce += ebit;  in ct_e1timer_interrupt()
794 	if (c->gopt.crc4)  in ct_e1timer_interrupt()
801 		++c->currnt.uas;  in ct_e1timer_interrupt()
805 			++c->currnt.les;  in ct_e1timer_interrupt()
810 			++c->currnt.es;  in ct_e1timer_interrupt()
814 			++c->currnt.oofs;  in ct_e1timer_interrupt()
819 			++c->currnt.ses;  in ct_e1timer_interrupt()
824 				++c->currnt.bes;  in ct_e1timer_interrupt()
828 			++c->degsec;  in ct_e1timer_interrupt()
829 			c->degerr += bpv + pcv;  in ct_e1timer_interrupt()
835 	if (c->cursec / 60 == 0) {  in ct_e1timer_interrupt()
836 		if (c->degerr > c->degsec * 2048 / 1000)  in ct_e1timer_interrupt()
837 			++c->currnt.dm;  in ct_e1timer_interrupt()
838 		c->degsec = 0;  in ct_e1timer_interrupt()
839 		c->degerr = 0;  in ct_e1timer_interrupt()
843 	if (c->cursec > 15*60) {  in ct_e1timer_interrupt()
847 			c->interval[i] = c->interval[i-1];  in ct_e1timer_interrupt()
848 		c->interval[0] = c->currnt;  in ct_e1timer_interrupt()
851 		c->total.bpv   += c->currnt.bpv;  in ct_e1timer_interrupt()
852 		c->total.fse   += c->currnt.fse;  in ct_e1timer_interrupt()
853 		c->total.crce  += c->currnt.crce;  in ct_e1timer_interrupt()
854 		c->total.rcrce += c->currnt.rcrce;  in ct_e1timer_interrupt()
855 		c->total.uas   += c->currnt.uas;  in ct_e1timer_interrupt()
856 		c->total.les   += c->currnt.les;  in ct_e1timer_interrupt()
857 		c->total.es    += c->currnt.es;  in ct_e1timer_interrupt()
858 		c->total.bes   += c->currnt.bes;  in ct_e1timer_interrupt()
859 		c->total.ses   += c->currnt.ses;  in ct_e1timer_interrupt()
860 		c->total.oofs  += c->currnt.oofs;  in ct_e1timer_interrupt()
861 		c->total.css   += c->currnt.css;  in ct_e1timer_interrupt()
862 		c->total.dm    += c->currnt.dm;  in ct_e1timer_interrupt()
863 		for (i=0; i<sizeof (c->currnt); ++i)  in ct_e1timer_interrupt()
864 			*(((char *)(&c->currnt))+i)=0;  in ct_e1timer_interrupt()
866 		c->totsec += c->cursec;  in ct_e1timer_interrupt()
867 		c->cursec = 0;  in ct_e1timer_interrupt()
871 static void ct_hdlc_interrupt (ct_chan_t *c, int imvr)  in ct_hdlc_interrupt()  argument
877 		dsr = inb (c->RX.DSR);  in ct_hdlc_interrupt()
878 		cda = inw (c->RX.CDA);  in ct_hdlc_interrupt()
880 			if (cda == (unsigned short) c->rdphys[i])  in ct_hdlc_interrupt()
883 			i = c->rn; /* cannot happen */  in ct_hdlc_interrupt()
884 		while (c->rn != i) {  in ct_hdlc_interrupt()
885 			int cst = B_STATUS (c->rdesc[c->rn]);  in ct_hdlc_interrupt()
888 				if (c->call_on_rx)  in ct_hdlc_interrupt()
889 					 c->call_on_rx (c, c->rbuf[c->rn],  in ct_hdlc_interrupt()
890 						B_LEN(c->rdesc[c->rn]));  in ct_hdlc_interrupt()
891 				++c->ipkts;  in ct_hdlc_interrupt()
892 				c->ibytes += B_LEN(c->rdesc[c->rn]);  in ct_hdlc_interrupt()
895 				if (c->call_on_err)  in ct_hdlc_interrupt()
896 					c->call_on_err (c, CT_OVERRUN);  in ct_hdlc_interrupt()
897 				++c->ierrs;  in ct_hdlc_interrupt()
901 				if (c->call_on_err)  in ct_hdlc_interrupt()
902 					c->call_on_err (c, CT_FRAME);  in ct_hdlc_interrupt()
903 				++c->ierrs;  in ct_hdlc_interrupt()
907 				if (c->call_on_err)  in ct_hdlc_interrupt()
908 					c->call_on_err (c, CT_CRC);  in ct_hdlc_interrupt()
909 				++c->ierrs;  in ct_hdlc_interrupt()
912 				if (c->call_on_err)  in ct_hdlc_interrupt()
913 					c->call_on_err (c, CT_OVERFLOW);  in ct_hdlc_interrupt()
914 				++c->ierrs;  in ct_hdlc_interrupt()
917 			B_NEXT (c->rdesc[c->rn]) =  in ct_hdlc_interrupt()
918 				c->rdphys[(c->rn+1) % NBUF] & 0xffff;  in ct_hdlc_interrupt()
919 			B_PTR (c->rdesc[c->rn]) = c->rphys[c->rn];  in ct_hdlc_interrupt()
920 			B_LEN (c->rdesc[c->rn]) = DMABUFSZ;  in ct_hdlc_interrupt()
921 			B_STATUS (c->rdesc[c->rn]) = 0;  in ct_hdlc_interrupt()
922 			c->rn = (c->rn + 1) % NBUF;  in ct_hdlc_interrupt()
924 		outw (c->RX.EDA, (unsigned short) c->rdphys[(i+NBUF-1)%NBUF]);  in ct_hdlc_interrupt()
926 		if (inb (c->RX.DSR) & DSR_DMA_ENABLE) {  in ct_hdlc_interrupt()
927 			outb (c->RX.DSR, dsr);  in ct_hdlc_interrupt()
929 			outb (c->RX.DSR, (dsr & 0xfc) | DSR_DMA_ENABLE);  in ct_hdlc_interrupt()
931 		++c->rintr;  in ct_hdlc_interrupt()
935 		st1 = inb (c->ST1);  in ct_hdlc_interrupt()
936 		st2 = inb (c->ST2);  in ct_hdlc_interrupt()
938 			if (c->call_on_msig)  in ct_hdlc_interrupt()
939 				c->call_on_msig (c);  in ct_hdlc_interrupt()
940 			++c->mintr;  in ct_hdlc_interrupt()
943 		outb (c->ST1, st1);  in ct_hdlc_interrupt()
944 		outb (c->ST2, st2);  in ct_hdlc_interrupt()
945 		++c->rintr;  in ct_hdlc_interrupt()
949 		dsr = inb (c->RX.DSR);  in ct_hdlc_interrupt()
951 			if (c->call_on_err)  in ct_hdlc_interrupt()
952 				c->call_on_err (c, CT_OVERFLOW);  in ct_hdlc_interrupt()
953 			++c->ierrs;  in ct_hdlc_interrupt()
955 				B_LEN (c->rdesc[i]) = DMABUFSZ;  in ct_hdlc_interrupt()
956 				B_STATUS (c->rdesc[i]) = 0;  in ct_hdlc_interrupt()
958 			ct_start_receiver (c, 1, c->rphys[0], DMABUFSZ,  in ct_hdlc_interrupt()
959 				c->rdphys[0], c->rdphys[NBUF-1]);  in ct_hdlc_interrupt()
960 			c->rn = 0;  in ct_hdlc_interrupt()
963 		outb (c->RX.DSR, dsr);  in ct_hdlc_interrupt()
964 		++c->rintr;  in ct_hdlc_interrupt()
969 		dsr = inb (c->TX.DSR);  in ct_hdlc_interrupt()
970 		cda = inw (c->TX.CDA);  in ct_hdlc_interrupt()
972 		for (i=0; i<NBUF && cda != (unsigned short)c->tdphys[i]; ++i)  in ct_hdlc_interrupt()
977 			if (c->call_on_err)  in ct_hdlc_interrupt()
978 				c->call_on_err (c, CT_UNDERRUN);  in ct_hdlc_interrupt()
979 			++c->oerrs;  in ct_hdlc_interrupt()
981 		while (c->tn != i) {  in ct_hdlc_interrupt()
982 			if (c->call_on_tx)  in ct_hdlc_interrupt()
983 				c->call_on_tx (c, c->attach[c->tn],  in ct_hdlc_interrupt()
984 					B_LEN(c->tdesc[c->tn]));  in ct_hdlc_interrupt()
985 			++c->opkts;  in ct_hdlc_interrupt()
986 			c->obytes += B_LEN(c->tdesc[c->tn]);  in ct_hdlc_interrupt()
988 			c->tn = (c->tn + 1) % NBUF;  in ct_hdlc_interrupt()
990 			outb (c->TX.DSR, DSR_CHAIN_EOM | DSR_DMA_CONTINUE);  in ct_hdlc_interrupt()
992 		outb (c->TX.DSR, dsr & ~DSR_CHAIN_EOM);  in ct_hdlc_interrupt()
993 		++c->tintr;  in ct_hdlc_interrupt()
997 		st1 = inb (c->ST1);  in ct_hdlc_interrupt()
999 			if (c->call_on_err)  in ct_hdlc_interrupt()
1000 				c->call_on_err (c, CT_UNDERRUN);  in ct_hdlc_interrupt()
1001 			++c->oerrs;  in ct_hdlc_interrupt()
1003 		outb (c->ST1, st1);  in ct_hdlc_interrupt()
1004 		++c->tintr;  in ct_hdlc_interrupt()
1013 int ct_receive_enabled (ct_chan_t *c)  in ct_receive_enabled()  argument
1017 	st3 = inb (c->ST3);  in ct_receive_enabled()
1021 int ct_transmit_enabled (ct_chan_t *c)  in ct_transmit_enabled()  argument
1025 	st3 = inb (c->ST3);  in ct_transmit_enabled()
1029 int ct_buf_free (ct_chan_t *c)  in ct_buf_free()  argument
1031 	return (NBUF + c->tn - c->te - 1) % NBUF;  in ct_buf_free()
1034 int ct_send_packet (ct_chan_t *c, unsigned char *data, int len,  in ct_send_packet()  argument
1043 	ne = (c->te+1) % NBUF;  in ct_send_packet()
1044 	if (ne == c->tn)  in ct_send_packet()
1048 	B_LEN (c->tdesc[c->te]) = len;  in ct_send_packet()
1049 	B_STATUS (c->tdesc[c->te]) = FST_EOM;  in ct_send_packet()
1050 	c->attach[c->te] = attachment;  in ct_send_packet()
1051 	if (c->tbuf[c->te] != data)  in ct_send_packet()
1052 		memcpy (c->tbuf[c->te], data, len);  in ct_send_packet()
1055 	c->te = ne;  in ct_send_packet()
1056 	outw (c->TX.EDA, (unsigned short) c->tdphys[ne]);  in ct_send_packet()
1057 	dsr = inb (c->TX.DSR);  in ct_send_packet()
1059 		outb (c->TX.DSR, DSR_DMA_ENABLE);  in ct_send_packet()
1063 int scc_write (ct_chan_t *c, unsigned char *d, int len)  in scc_write()  argument
1068 	if (c->scctx_empty)  in scc_write()
1071 		free = (SCCBUFSZ + c->scctx_b - c->scctx_e) % SCCBUFSZ;  in scc_write()
1077 		c->scctx[c->scctx_e] = d[i];  in scc_write()
1078 		c->scctx_e = (c->scctx_e+1) % SCCBUFSZ;  in scc_write()
1080 	if (c->scctx_empty && len) {  in scc_write()
1081 		cte_out2d (c, c->scctx[c->scctx_b]);  in scc_write()
1082 		c->scctx_empty = 0;  in scc_write()
1087 int scc_read (ct_chan_t *c, unsigned char *d, int len)  in scc_read()  argument
1091 	if (c->sccrx_empty)  in scc_read()
1094 		bytes = (SCCBUFSZ + c->sccrx_e - 1 - c->sccrx_b) %  in scc_read()
1100 		d[i] = c->sccrx[c->sccrx_b];  in scc_read()
1101 		c->sccrx_b = (c->sccrx_b+1) % SCCBUFSZ;  in scc_read()
1103 	if (c->sccrx_b==c->sccrx_e)  in scc_read()
1104 		c->sccrx_empty = 1;  in scc_read()
1108 int sccrx_check (ct_chan_t *c)  in sccrx_check()  argument
1112 	if (c->sccrx_empty)  in sccrx_check()
1115 		bytes = (SCCBUFSZ + c->sccrx_e - 1 - c->sccrx_b) %  in sccrx_check()
1120 int scc_read_byte (ct_chan_t *c)  in scc_read_byte()  argument
1124 	if (scc_read (c, &a, 1) < 0)  in scc_read_byte()
1129 int scc_write_byte (ct_chan_t *c, unsigned char b)  in scc_write_byte()  argument
1131 	if (scc_write (c, &b, 1) < 0)  in scc_write_byte()
1139 void ct_register_transmit (ct_chan_t *c, void (*func) (ct_chan_t*, void*, int))  in ct_register_transmit()  argument
1141 	c->call_on_tx = func;  in ct_register_transmit()
1144 void ct_register_receive (ct_chan_t *c, void (*func) (ct_chan_t*, char*, int))  in ct_register_receive()  argument
1146 	c->call_on_rx = func;  in ct_register_receive()
1149 void ct_register_error (ct_chan_t *c, void (*func) (ct_chan_t*, int))  in ct_register_error()  argument
1151 	c->call_on_err = func;  in ct_register_error()
1154 void ct_register_scc (ct_chan_t *c, void (*func) (ct_chan_t*))  in ct_register_scc()  argument
1156 	c->call_on_scc = func;  in ct_register_scc()
1159 void ct_register_modem (ct_chan_t *c, void (*func) (ct_chan_t*))  in ct_register_modem()  argument
1161 	c->call_on_msig = func;  in ct_register_modem()