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69#define VERSION "1.11"
70
71
72
73
74
75
76
77
78#include <linux/module.h>
79
80#include <linux/io.h>
81#include <linux/kernel.h>
82#include <linux/sched.h>
83#include <linux/ioport.h>
84#include <linux/interrupt.h>
85#include <linux/errno.h>
86#include <linux/tty.h>
87#include <linux/tty_flip.h>
88#include <linux/mm.h>
89#include <linux/serial.h>
90#include <linux/fcntl.h>
91#include <linux/major.h>
92#include <linux/delay.h>
93#include <linux/pci.h>
94#include <linux/init.h>
95#include <linux/uaccess.h>
96#include <linux/gfp.h>
97
98#include "specialix_io8.h"
99#include "cd1865.h"
100
101
102
103
104
105
106
107
108
109
110#define DEBUG
111
112static int sx_debug;
113static int sx_rxfifo = SPECIALIX_RXFIFO;
114static int sx_rtscts;
115
116#ifdef DEBUG
117#define dprintk(f, str...) if (sx_debug & f) printk(str)
118#else
119#define dprintk(f, str...)
120#endif
121
122#define SX_DEBUG_FLOW 0x0001
123#define SX_DEBUG_DATA 0x0002
124#define SX_DEBUG_PROBE 0x0004
125#define SX_DEBUG_CHAN 0x0008
126#define SX_DEBUG_INIT 0x0010
127#define SX_DEBUG_RX 0x0020
128#define SX_DEBUG_TX 0x0040
129#define SX_DEBUG_IRQ 0x0080
130#define SX_DEBUG_OPEN 0x0100
131#define SX_DEBUG_TERMIOS 0x0200
132#define SX_DEBUG_SIGNALS 0x0400
133#define SX_DEBUG_FIFO 0x0800
134
135
136#define func_enter() dprintk(SX_DEBUG_FLOW, "io8: enter %s\n", __func__)
137#define func_exit() dprintk(SX_DEBUG_FLOW, "io8: exit %s\n", __func__)
138
139
140
141
142
143#define SPECIALIX_PARANOIA_CHECK
144
145
146
147
148
149#undef SX_REPORT_FIFO
150#undef SX_REPORT_OVERRUN
151
152
153
154
155#define SPECIALIX_LEGAL_FLAGS \
156 (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \
157 ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \
158 ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP)
159
160static struct tty_driver *specialix_driver;
161
162static struct specialix_board sx_board[SX_NBOARD] = {
163 { 0, SX_IOBASE1, 9, },
164 { 0, SX_IOBASE2, 11, },
165 { 0, SX_IOBASE3, 12, },
166 { 0, SX_IOBASE4, 15, },
167};
168
169static struct specialix_port sx_port[SX_NBOARD * SX_NPORT];
170
171
172static int sx_paranoia_check(struct specialix_port const *port,
173 char *name, const char *routine)
174{
175#ifdef SPECIALIX_PARANOIA_CHECK
176 static const char *badmagic = KERN_ERR
177 "sx: Warning: bad specialix port magic number for device %s in %s\n";
178 static const char *badinfo = KERN_ERR
179 "sx: Warning: null specialix port for device %s in %s\n";
180
181 if (!port) {
182 printk(badinfo, name, routine);
183 return 1;
184 }
185 if (port->magic != SPECIALIX_MAGIC) {
186 printk(badmagic, name, routine);
187 return 1;
188 }
189#endif
190 return 0;
191}
192
193
194
195
196
197
198
199
200
201static inline int board_No(struct specialix_board *bp)
202{
203 return bp - sx_board;
204}
205
206
207
208static inline int port_No(struct specialix_port const *port)
209{
210 return SX_PORT(port - sx_port);
211}
212
213
214
215static inline struct specialix_board *port_Board(
216 struct specialix_port const *port)
217{
218 return &sx_board[SX_BOARD(port - sx_port)];
219}
220
221
222
223static inline unsigned char sx_in(struct specialix_board *bp,
224 unsigned short reg)
225{
226 bp->reg = reg | 0x80;
227 outb(reg | 0x80, bp->base + SX_ADDR_REG);
228 return inb(bp->base + SX_DATA_REG);
229}
230
231
232
233static inline void sx_out(struct specialix_board *bp, unsigned short reg,
234 unsigned char val)
235{
236 bp->reg = reg | 0x80;
237 outb(reg | 0x80, bp->base + SX_ADDR_REG);
238 outb(val, bp->base + SX_DATA_REG);
239}
240
241
242
243static inline unsigned char sx_in_off(struct specialix_board *bp,
244 unsigned short reg)
245{
246 bp->reg = reg;
247 outb(reg, bp->base + SX_ADDR_REG);
248 return inb(bp->base + SX_DATA_REG);
249}
250
251
252
253static inline void sx_out_off(struct specialix_board *bp,
254 unsigned short reg, unsigned char val)
255{
256 bp->reg = reg;
257 outb(reg, bp->base + SX_ADDR_REG);
258 outb(val, bp->base + SX_DATA_REG);
259}
260
261
262
263static void sx_wait_CCR(struct specialix_board *bp)
264{
265 unsigned long delay, flags;
266 unsigned char ccr;
267
268 for (delay = SX_CCR_TIMEOUT; delay; delay--) {
269 spin_lock_irqsave(&bp->lock, flags);
270 ccr = sx_in(bp, CD186x_CCR);
271 spin_unlock_irqrestore(&bp->lock, flags);
272 if (!ccr)
273 return;
274 udelay(1);
275 }
276
277 printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
278}
279
280
281
282static void sx_wait_CCR_off(struct specialix_board *bp)
283{
284 unsigned long delay;
285 unsigned char crr;
286 unsigned long flags;
287
288 for (delay = SX_CCR_TIMEOUT; delay; delay--) {
289 spin_lock_irqsave(&bp->lock, flags);
290 crr = sx_in_off(bp, CD186x_CCR);
291 spin_unlock_irqrestore(&bp->lock, flags);
292 if (!crr)
293 return;
294 udelay(1);
295 }
296
297 printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
298}
299
300
301
302
303
304
305static int sx_request_io_range(struct specialix_board *bp)
306{
307 return request_region(bp->base,
308 bp->flags & SX_BOARD_IS_PCI ? SX_PCI_IO_SPACE : SX_IO_SPACE,
309 "specialix IO8+") == NULL;
310}
311
312
313static void sx_release_io_range(struct specialix_board *bp)
314{
315 release_region(bp->base, bp->flags & SX_BOARD_IS_PCI ?
316 SX_PCI_IO_SPACE : SX_IO_SPACE);
317}
318
319
320
321static int sx_set_irq(struct specialix_board *bp)
322{
323 int virq;
324 int i;
325 unsigned long flags;
326
327 if (bp->flags & SX_BOARD_IS_PCI)
328 return 1;
329 switch (bp->irq) {
330
331 case 15:
332 virq = 0;
333 break;
334 case 12:
335 virq = 1;
336 break;
337 case 11:
338 virq = 2;
339 break;
340 case 9:
341 virq = 3;
342 break;
343 default:printk(KERN_ERR
344 "Speclialix: cannot set irq to %d.\n", bp->irq);
345 return 0;
346 }
347 spin_lock_irqsave(&bp->lock, flags);
348 for (i = 0; i < 2; i++) {
349 sx_out(bp, CD186x_CAR, i);
350 sx_out(bp, CD186x_MSVRTS, ((virq >> i) & 0x1)? MSVR_RTS:0);
351 }
352 spin_unlock_irqrestore(&bp->lock, flags);
353 return 1;
354}
355
356
357
358static int sx_init_CD186x(struct specialix_board *bp)
359{
360 unsigned long flags;
361 int scaler;
362 int rv = 1;
363
364 func_enter();
365 sx_wait_CCR_off(bp);
366 spin_lock_irqsave(&bp->lock, flags);
367 sx_out_off(bp, CD186x_CCR, CCR_HARDRESET);
368 spin_unlock_irqrestore(&bp->lock, flags);
369 msleep(50);
370 spin_lock_irqsave(&bp->lock, flags);
371 sx_out_off(bp, CD186x_GIVR, SX_ID);
372 sx_out_off(bp, CD186x_GICR, 0);
373 sx_out_off(bp, CD186x_PILR1, SX_ACK_MINT);
374 sx_out_off(bp, CD186x_PILR2, SX_ACK_TINT);
375 sx_out_off(bp, CD186x_PILR3, SX_ACK_RINT);
376
377 sx_out_off(bp, CD186x_SRCR, sx_in(bp, CD186x_SRCR) | SRCR_REGACKEN);
378
379
380 scaler = SX_OSCFREQ/SPECIALIX_TPS;
381
382 sx_out_off(bp, CD186x_PPRH, scaler >> 8);
383 sx_out_off(bp, CD186x_PPRL, scaler & 0xff);
384 spin_unlock_irqrestore(&bp->lock, flags);
385
386 if (!sx_set_irq(bp)) {
387
388 printk(KERN_ERR "Cannot set irq to %d.\n", bp->irq);
389 rv = 0;
390 }
391
392 func_exit();
393 return rv;
394}
395
396
397static int read_cross_byte(struct specialix_board *bp, int reg, int bit)
398{
399 int i;
400 int t;
401 unsigned long flags;
402
403 spin_lock_irqsave(&bp->lock, flags);
404 for (i = 0, t = 0; i < 8; i++) {
405 sx_out_off(bp, CD186x_CAR, i);
406 if (sx_in_off(bp, reg) & bit)
407 t |= 1 << i;
408 }
409 spin_unlock_irqrestore(&bp->lock, flags);
410
411 return t;
412}
413
414
415
416static int sx_probe(struct specialix_board *bp)
417{
418 unsigned char val1, val2;
419 int rev;
420 int chip;
421
422 func_enter();
423
424 if (sx_request_io_range(bp)) {
425 func_exit();
426 return 1;
427 }
428
429
430 sx_out_off(bp, CD186x_PPRL, 0x5a);
431 udelay(1);
432 val1 = sx_in_off(bp, CD186x_PPRL);
433
434 sx_out_off(bp, CD186x_PPRL, 0xa5);
435 udelay(1);
436 val2 = sx_in_off(bp, CD186x_PPRL);
437
438
439 if (val1 != 0x5a || val2 != 0xa5) {
440 printk(KERN_INFO
441 "sx%d: specialix IO8+ Board at 0x%03x not found.\n",
442 board_No(bp), bp->base);
443 sx_release_io_range(bp);
444 func_exit();
445 return 1;
446 }
447
448
449
450 val1 = read_cross_byte(bp, CD186x_MSVR, MSVR_DSR);
451 val2 = read_cross_byte(bp, CD186x_MSVR, MSVR_RTS);
452 dprintk(SX_DEBUG_INIT,
453 "sx%d: DSR lines are: %02x, rts lines are: %02x\n",
454 board_No(bp), val1, val2);
455
456
457
458
459
460 val2 = (bp->flags & SX_BOARD_IS_PCI)?0x4d : 0xb2;
461 if (val1 != val2) {
462 printk(KERN_INFO
463 "sx%d: specialix IO8+ ID %02x at 0x%03x not found (%02x).\n",
464 board_No(bp), val2, bp->base, val1);
465 sx_release_io_range(bp);
466 func_exit();
467 return 1;
468 }
469
470
471
472 if (!sx_init_CD186x(bp)) {
473 sx_release_io_range(bp);
474 func_exit();
475 return 1;
476 }
477
478 sx_request_io_range(bp);
479 bp->flags |= SX_BOARD_PRESENT;
480
481
482
483
484
485
486
487
488
489
490
491 switch (sx_in_off(bp, CD186x_GFRCR)) {
492 case 0x82:
493 chip = 1864;
494 rev = 'A';
495 break;
496 case 0x83:
497 chip = 1865;
498 rev = 'A';
499 break;
500 case 0x84:
501 chip = 1865;
502 rev = 'B';
503 break;
504 case 0x85:
505 chip = 1865;
506 rev = 'C';
507 break;
508 default:
509 chip = -1;
510 rev = 'x';
511 }
512
513 dprintk(SX_DEBUG_INIT, " GFCR = 0x%02x\n", sx_in_off(bp, CD186x_GFRCR));
514
515 printk(KERN_INFO
516 "sx%d: specialix IO8+ board detected at 0x%03x, IRQ %d, CD%d Rev. %c.\n",
517 board_No(bp), bp->base, bp->irq, chip, rev);
518
519 func_exit();
520 return 0;
521}
522
523
524
525
526
527
528static struct specialix_port *sx_get_port(struct specialix_board *bp,
529 unsigned char const *what)
530{
531 unsigned char channel;
532 struct specialix_port *port = NULL;
533
534 channel = sx_in(bp, CD186x_GICR) >> GICR_CHAN_OFF;
535 dprintk(SX_DEBUG_CHAN, "channel: %d\n", channel);
536 if (channel < CD186x_NCH) {
537 port = &sx_port[board_No(bp) * SX_NPORT + channel];
538 dprintk(SX_DEBUG_CHAN, "port: %d %p flags: 0x%lx\n",
539 board_No(bp) * SX_NPORT + channel, port,
540 port->port.flags & ASYNC_INITIALIZED);
541
542 if (port->port.flags & ASYNC_INITIALIZED) {
543 dprintk(SX_DEBUG_CHAN, "port: %d %p\n", channel, port);
544 func_exit();
545 return port;
546 }
547 }
548 printk(KERN_INFO "sx%d: %s interrupt from invalid port %d\n",
549 board_No(bp), what, channel);
550 return NULL;
551}
552
553
554static void sx_receive_exc(struct specialix_board *bp)
555{
556 struct specialix_port *port;
557 struct tty_struct *tty;
558 unsigned char status;
559 unsigned char ch, flag;
560
561 func_enter();
562
563 port = sx_get_port(bp, "Receive");
564 if (!port) {
565 dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n");
566 func_exit();
567 return;
568 }
569 tty = port->port.tty;
570
571 status = sx_in(bp, CD186x_RCSR);
572
573 dprintk(SX_DEBUG_RX, "status: 0x%x\n", status);
574 if (status & RCSR_OE) {
575 port->overrun++;
576 dprintk(SX_DEBUG_FIFO,
577 "sx%d: port %d: Overrun. Total %ld overruns.\n",
578 board_No(bp), port_No(port), port->overrun);
579 }
580 status &= port->mark_mask;
581
582
583
584 if (tty_buffer_request_room(tty, 1) == 0) {
585 dprintk(SX_DEBUG_FIFO,
586 "sx%d: port %d: Working around flip buffer overflow.\n",
587 board_No(bp), port_No(port));
588 func_exit();
589 return;
590 }
591
592 ch = sx_in(bp, CD186x_RDR);
593 if (!status) {
594 func_exit();
595 return;
596 }
597 if (status & RCSR_TOUT) {
598 printk(KERN_INFO
599 "sx%d: port %d: Receiver timeout. Hardware problems ?\n",
600 board_No(bp), port_No(port));
601 func_exit();
602 return;
603
604 } else if (status & RCSR_BREAK) {
605 dprintk(SX_DEBUG_RX, "sx%d: port %d: Handling break...\n",
606 board_No(bp), port_No(port));
607 flag = TTY_BREAK;
608 if (port->port.flags & ASYNC_SAK)
609 do_SAK(tty);
610
611 } else if (status & RCSR_PE)
612 flag = TTY_PARITY;
613
614 else if (status & RCSR_FE)
615 flag = TTY_FRAME;
616
617 else if (status & RCSR_OE)
618 flag = TTY_OVERRUN;
619
620 else
621 flag = TTY_NORMAL;
622
623 if (tty_insert_flip_char(tty, ch, flag))
624 tty_flip_buffer_push(tty);
625 func_exit();
626}
627
628
629static void sx_receive(struct specialix_board *bp)
630{
631 struct specialix_port *port;
632 struct tty_struct *tty;
633 unsigned char count;
634
635 func_enter();
636
637 port = sx_get_port(bp, "Receive");
638 if (port == NULL) {
639 dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n");
640 func_exit();
641 return;
642 }
643 tty = port->port.tty;
644
645 count = sx_in(bp, CD186x_RDCR);
646 dprintk(SX_DEBUG_RX, "port: %p: count: %d\n", port, count);
647 port->hits[count > 8 ? 9 : count]++;
648
649 while (count--)
650 tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL);
651 tty_flip_buffer_push(tty);
652 func_exit();
653}
654
655
656static void sx_transmit(struct specialix_board *bp)
657{
658 struct specialix_port *port;
659 struct tty_struct *tty;
660 unsigned char count;
661
662 func_enter();
663 port = sx_get_port(bp, "Transmit");
664 if (port == NULL) {
665 func_exit();
666 return;
667 }
668 dprintk(SX_DEBUG_TX, "port: %p\n", port);
669 tty = port->port.tty;
670
671 if (port->IER & IER_TXEMPTY) {
672
673 sx_out(bp, CD186x_CAR, port_No(port));
674 port->IER &= ~IER_TXEMPTY;
675 sx_out(bp, CD186x_IER, port->IER);
676 func_exit();
677 return;
678 }
679
680 if ((port->xmit_cnt <= 0 && !port->break_length)
681 || tty->stopped || tty->hw_stopped) {
682 sx_out(bp, CD186x_CAR, port_No(port));
683 port->IER &= ~IER_TXRDY;
684 sx_out(bp, CD186x_IER, port->IER);
685 func_exit();
686 return;
687 }
688
689 if (port->break_length) {
690 if (port->break_length > 0) {
691 if (port->COR2 & COR2_ETC) {
692 sx_out(bp, CD186x_TDR, CD186x_C_ESC);
693 sx_out(bp, CD186x_TDR, CD186x_C_SBRK);
694 port->COR2 &= ~COR2_ETC;
695 }
696 count = min_t(int, port->break_length, 0xff);
697 sx_out(bp, CD186x_TDR, CD186x_C_ESC);
698 sx_out(bp, CD186x_TDR, CD186x_C_DELAY);
699 sx_out(bp, CD186x_TDR, count);
700 port->break_length -= count;
701 if (port->break_length == 0)
702 port->break_length--;
703 } else {
704 sx_out(bp, CD186x_TDR, CD186x_C_ESC);
705 sx_out(bp, CD186x_TDR, CD186x_C_EBRK);
706 sx_out(bp, CD186x_COR2, port->COR2);
707 sx_wait_CCR(bp);
708 sx_out(bp, CD186x_CCR, CCR_CORCHG2);
709 port->break_length = 0;
710 }
711
712 func_exit();
713 return;
714 }
715
716 count = CD186x_NFIFO;
717 do {
718 sx_out(bp, CD186x_TDR, port->xmit_buf[port->xmit_tail++]);
719 port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
720 if (--port->xmit_cnt <= 0)
721 break;
722 } while (--count > 0);
723
724 if (port->xmit_cnt <= 0) {
725 sx_out(bp, CD186x_CAR, port_No(port));
726 port->IER &= ~IER_TXRDY;
727 sx_out(bp, CD186x_IER, port->IER);
728 }
729 if (port->xmit_cnt <= port->wakeup_chars)
730 tty_wakeup(tty);
731
732 func_exit();
733}
734
735
736static void sx_check_modem(struct specialix_board *bp)
737{
738 struct specialix_port *port;
739 struct tty_struct *tty;
740 unsigned char mcr;
741 int msvr_cd;
742
743 dprintk(SX_DEBUG_SIGNALS, "Modem intr. ");
744 port = sx_get_port(bp, "Modem");
745 if (port == NULL)
746 return;
747
748 tty = port->port.tty;
749
750 mcr = sx_in(bp, CD186x_MCR);
751
752 if ((mcr & MCR_CDCHG)) {
753 dprintk(SX_DEBUG_SIGNALS, "CD just changed... ");
754 msvr_cd = sx_in(bp, CD186x_MSVR) & MSVR_CD;
755 if (msvr_cd) {
756 dprintk(SX_DEBUG_SIGNALS, "Waking up guys in open.\n");
757 wake_up_interruptible(&port->port.open_wait);
758 } else {
759 dprintk(SX_DEBUG_SIGNALS, "Sending HUP.\n");
760 tty_hangup(tty);
761 }
762 }
763
764#ifdef SPECIALIX_BRAIN_DAMAGED_CTS
765 if (mcr & MCR_CTSCHG) {
766 if (sx_in(bp, CD186x_MSVR) & MSVR_CTS) {
767 tty->hw_stopped = 0;
768 port->IER |= IER_TXRDY;
769 if (port->xmit_cnt <= port->wakeup_chars)
770 tty_wakeup(tty);
771 } else {
772 tty->hw_stopped = 1;
773 port->IER &= ~IER_TXRDY;
774 }
775 sx_out(bp, CD186x_IER, port->IER);
776 }
777 if (mcr & MCR_DSSXHG) {
778 if (sx_in(bp, CD186x_MSVR) & MSVR_DSR) {
779 tty->hw_stopped = 0;
780 port->IER |= IER_TXRDY;
781 if (port->xmit_cnt <= port->wakeup_chars)
782 tty_wakeup(tty);
783 } else {
784 tty->hw_stopped = 1;
785 port->IER &= ~IER_TXRDY;
786 }
787 sx_out(bp, CD186x_IER, port->IER);
788 }
789#endif
790
791
792 sx_out(bp, CD186x_MCR, 0);
793}
794
795
796
797static irqreturn_t sx_interrupt(int dummy, void *dev_id)
798{
799 unsigned char status;
800 unsigned char ack;
801 struct specialix_board *bp = dev_id;
802 unsigned long loop = 0;
803 int saved_reg;
804 unsigned long flags;
805
806 func_enter();
807
808 spin_lock_irqsave(&bp->lock, flags);
809
810 dprintk(SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __func__,
811 port_No(sx_get_port(bp, "INT")),
812 SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
813 if (!(bp->flags & SX_BOARD_ACTIVE)) {
814 dprintk(SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n",
815 bp->irq);
816 spin_unlock_irqrestore(&bp->lock, flags);
817 func_exit();
818 return IRQ_NONE;
819 }
820
821 saved_reg = bp->reg;
822
823 while (++loop < 16) {
824 status = sx_in(bp, CD186x_SRSR) &
825 (SRSR_RREQint | SRSR_TREQint | SRSR_MREQint);
826 if (status == 0)
827 break;
828 if (status & SRSR_RREQint) {
829 ack = sx_in(bp, CD186x_RRAR);
830
831 if (ack == (SX_ID | GIVR_IT_RCV))
832 sx_receive(bp);
833 else if (ack == (SX_ID | GIVR_IT_REXC))
834 sx_receive_exc(bp);
835 else
836 printk(KERN_ERR
837 "sx%d: status: 0x%x Bad receive ack 0x%02x.\n",
838 board_No(bp), status, ack);
839
840 } else if (status & SRSR_TREQint) {
841 ack = sx_in(bp, CD186x_TRAR);
842
843 if (ack == (SX_ID | GIVR_IT_TX))
844 sx_transmit(bp);
845 else
846 printk(KERN_ERR "sx%d: status: 0x%x Bad transmit ack 0x%02x. port: %d\n",
847 board_No(bp), status, ack,
848 port_No(sx_get_port(bp, "Int")));
849 } else if (status & SRSR_MREQint) {
850 ack = sx_in(bp, CD186x_MRAR);
851
852 if (ack == (SX_ID | GIVR_IT_MODEM))
853 sx_check_modem(bp);
854 else
855 printk(KERN_ERR
856 "sx%d: status: 0x%x Bad modem ack 0x%02x.\n",
857 board_No(bp), status, ack);
858
859 }
860
861 sx_out(bp, CD186x_EOIR, 0);
862 }
863 bp->reg = saved_reg;
864 outb(bp->reg, bp->base + SX_ADDR_REG);
865 spin_unlock_irqrestore(&bp->lock, flags);
866 func_exit();
867 return IRQ_HANDLED;
868}
869
870
871
872
873
874
875static void turn_ints_off(struct specialix_board *bp)
876{
877 unsigned long flags;
878
879 func_enter();
880 spin_lock_irqsave(&bp->lock, flags);
881 (void) sx_in_off(bp, 0);
882 spin_unlock_irqrestore(&bp->lock, flags);
883
884 func_exit();
885}
886
887static void turn_ints_on(struct specialix_board *bp)
888{
889 unsigned long flags;
890
891 func_enter();
892
893 spin_lock_irqsave(&bp->lock, flags);
894 (void) sx_in(bp, 0);
895 spin_unlock_irqrestore(&bp->lock, flags);
896
897 func_exit();
898}
899
900
901
902static int sx_setup_board(struct specialix_board *bp)
903{
904 int error;
905
906 if (bp->flags & SX_BOARD_ACTIVE)
907 return 0;
908
909 if (bp->flags & SX_BOARD_IS_PCI)
910 error = request_irq(bp->irq, sx_interrupt,
911 IRQF_DISABLED | IRQF_SHARED, "specialix IO8+", bp);
912 else
913 error = request_irq(bp->irq, sx_interrupt,
914 IRQF_DISABLED, "specialix IO8+", bp);
915
916 if (error)
917 return error;
918
919 turn_ints_on(bp);
920 bp->flags |= SX_BOARD_ACTIVE;
921
922 return 0;
923}
924
925
926
927static void sx_shutdown_board(struct specialix_board *bp)
928{
929 func_enter();
930
931 if (!(bp->flags & SX_BOARD_ACTIVE)) {
932 func_exit();
933 return;
934 }
935
936 bp->flags &= ~SX_BOARD_ACTIVE;
937
938 dprintk(SX_DEBUG_IRQ, "Freeing IRQ%d for board %d.\n",
939 bp->irq, board_No(bp));
940 free_irq(bp->irq, bp);
941 turn_ints_off(bp);
942 func_exit();
943}
944
945static unsigned int sx_crtscts(struct tty_struct *tty)
946{
947 if (sx_rtscts)
948 return C_CRTSCTS(tty);
949 return 1;
950}
951
952
953
954
955
956static void sx_change_speed(struct specialix_board *bp,
957 struct specialix_port *port)
958{
959 struct tty_struct *tty;
960 unsigned long baud;
961 long tmp;
962 unsigned char cor1 = 0, cor3 = 0;
963 unsigned char mcor1 = 0, mcor2 = 0;
964 static unsigned long again;
965 unsigned long flags;
966
967 func_enter();
968
969 tty = port->port.tty;
970 if (!tty || !tty->termios) {
971 func_exit();
972 return;
973 }
974
975 port->IER = 0;
976 port->COR2 = 0;
977
978 spin_lock_irqsave(&bp->lock, flags);
979 sx_out(bp, CD186x_CAR, port_No(port));
980
981
982
983 if (sx_crtscts(tty))
984 port->MSVR = MSVR_DTR | (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
985 else
986 port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
987 spin_unlock_irqrestore(&bp->lock, flags);
988 dprintk(SX_DEBUG_TERMIOS, "sx: got MSVR=%02x.\n", port->MSVR);
989 baud = tty_get_baud_rate(tty);
990
991 if (baud == 38400) {
992 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
993 baud = 57600;
994 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
995 baud = 115200;
996 }
997
998 if (!baud) {
999
1000 dprintk(SX_DEBUG_TERMIOS, "Dropping DTR... Hmm....\n");
1001 if (!sx_crtscts(tty)) {
1002 port->MSVR &= ~MSVR_DTR;
1003 spin_lock_irqsave(&bp->lock, flags);
1004 sx_out(bp, CD186x_MSVR, port->MSVR);
1005 spin_unlock_irqrestore(&bp->lock, flags);
1006 } else
1007 dprintk(SX_DEBUG_TERMIOS, "Can't drop DTR: no DTR.\n");
1008 return;
1009 } else {
1010
1011 if (!sx_crtscts(tty))
1012 port->MSVR |= MSVR_DTR;
1013 }
1014
1015
1016
1017
1018
1019
1020 tmp = port->custom_divisor ;
1021 if (tmp)
1022 printk(KERN_INFO
1023 "sx%d: Using custom baud rate divisor %ld. \n"
1024 "This is an untested option, please be careful.\n",
1025 port_No(port), tmp);
1026 else
1027 tmp = (((SX_OSCFREQ + baud/2) / baud + CD186x_TPC/2) /
1028 CD186x_TPC);
1029
1030 if (tmp < 0x10 && time_before(again, jiffies)) {
1031 again = jiffies + HZ * 60;
1032
1033 if (tmp >= 12) {
1034 printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
1035 "Performance degradation is possible.\n"
1036 "Read specialix.txt for more info.\n",
1037 port_No(port), tmp);
1038 } else {
1039 printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
1040 "Warning: overstressing Cirrus chip. This might not work.\n"
1041 "Read specialix.txt for more info.\n", port_No(port), tmp);
1042 }
1043 }
1044 spin_lock_irqsave(&bp->lock, flags);
1045 sx_out(bp, CD186x_RBPRH, (tmp >> 8) & 0xff);
1046 sx_out(bp, CD186x_TBPRH, (tmp >> 8) & 0xff);
1047 sx_out(bp, CD186x_RBPRL, tmp & 0xff);
1048 sx_out(bp, CD186x_TBPRL, tmp & 0xff);
1049 spin_unlock_irqrestore(&bp->lock, flags);
1050 if (port->custom_divisor)
1051 baud = (SX_OSCFREQ + port->custom_divisor/2) /
1052 port->custom_divisor;
1053 baud = (baud + 5) / 10;
1054
1055
1056 tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO;
1057 port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ?
1058 SERIAL_XMIT_SIZE - 1 : tmp);
1059
1060
1061 tmp = (SPECIALIX_TPS + SPECIALIX_TPS/2 + baud/2) / baud;
1062 tmp = (tmp > 0xff) ? 0xff : tmp;
1063 spin_lock_irqsave(&bp->lock, flags);
1064 sx_out(bp, CD186x_RTPR, tmp);
1065 spin_unlock_irqrestore(&bp->lock, flags);
1066 switch (C_CSIZE(tty)) {
1067 case CS5:
1068 cor1 |= COR1_5BITS;
1069 break;
1070 case CS6:
1071 cor1 |= COR1_6BITS;
1072 break;
1073 case CS7:
1074 cor1 |= COR1_7BITS;
1075 break;
1076 case CS8:
1077 cor1 |= COR1_8BITS;
1078 break;
1079 }
1080
1081 if (C_CSTOPB(tty))
1082 cor1 |= COR1_2SB;
1083
1084 cor1 |= COR1_IGNORE;
1085 if (C_PARENB(tty)) {
1086 cor1 |= COR1_NORMPAR;
1087 if (C_PARODD(tty))
1088 cor1 |= COR1_ODDP;
1089 if (I_INPCK(tty))
1090 cor1 &= ~COR1_IGNORE;
1091 }
1092
1093 port->mark_mask = RCSR_OE | RCSR_TOUT;
1094 if (I_INPCK(tty))
1095 port->mark_mask |= RCSR_FE | RCSR_PE;
1096 if (I_BRKINT(tty) || I_PARMRK(tty))
1097 port->mark_mask |= RCSR_BREAK;
1098 if (I_IGNPAR(tty))
1099 port->mark_mask &= ~(RCSR_FE | RCSR_PE);
1100 if (I_IGNBRK(tty)) {
1101 port->mark_mask &= ~RCSR_BREAK;
1102 if (I_IGNPAR(tty))
1103
1104 port->mark_mask &= ~RCSR_OE;
1105 }
1106
1107 if (C_CRTSCTS(tty)) {
1108#ifdef SPECIALIX_BRAIN_DAMAGED_CTS
1109 port->IER |= IER_DSR | IER_CTS;
1110 mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD;
1111 mcor2 |= MCOR2_DSROD | MCOR2_CTSOD;
1112 spin_lock_irqsave(&bp->lock, flags);
1113 tty->hw_stopped = !(sx_in(bp, CD186x_MSVR) &
1114 (MSVR_CTS|MSVR_DSR));
1115 spin_unlock_irqrestore(&bp->lock, flags);
1116#else
1117 port->COR2 |= COR2_CTSAE;
1118#endif
1119 }
1120
1121
1122 if (I_IXON(tty)) {
1123 port->COR2 |= COR2_TXIBE;
1124 cor3 |= (COR3_FCT | COR3_SCDE);
1125 if (I_IXANY(tty))
1126 port->COR2 |= COR2_IXM;
1127 spin_lock_irqsave(&bp->lock, flags);
1128 sx_out(bp, CD186x_SCHR1, START_CHAR(tty));
1129 sx_out(bp, CD186x_SCHR2, STOP_CHAR(tty));
1130 sx_out(bp, CD186x_SCHR3, START_CHAR(tty));
1131 sx_out(bp, CD186x_SCHR4, STOP_CHAR(tty));
1132 spin_unlock_irqrestore(&bp->lock, flags);
1133 }
1134 if (!C_CLOCAL(tty)) {
1135
1136 port->IER |= IER_CD;
1137 mcor1 |= MCOR1_CDZD;
1138 mcor2 |= MCOR2_CDOD;
1139 }
1140
1141 if (C_CREAD(tty))
1142
1143 port->IER |= IER_RXD;
1144
1145
1146 cor3 |= sx_rxfifo;
1147
1148 spin_lock_irqsave(&bp->lock, flags);
1149 sx_out(bp, CD186x_COR1, cor1);
1150 sx_out(bp, CD186x_COR2, port->COR2);
1151 sx_out(bp, CD186x_COR3, cor3);
1152 spin_unlock_irqrestore(&bp->lock, flags);
1153
1154 sx_wait_CCR(bp);
1155 spin_lock_irqsave(&bp->lock, flags);
1156 sx_out(bp, CD186x_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
1157
1158 dprintk(SX_DEBUG_TERMIOS, "Mcor1 = %02x, mcor2 = %02x.\n",
1159 mcor1, mcor2);
1160 sx_out(bp, CD186x_MCOR1, mcor1);
1161 sx_out(bp, CD186x_MCOR2, mcor2);
1162 spin_unlock_irqrestore(&bp->lock, flags);
1163
1164 sx_wait_CCR(bp);
1165 spin_lock_irqsave(&bp->lock, flags);
1166 sx_out(bp, CD186x_CCR, CCR_TXEN | CCR_RXEN);
1167
1168 sx_out(bp, CD186x_IER, port->IER);
1169
1170 sx_out(bp, CD186x_MSVR, port->MSVR);
1171 spin_unlock_irqrestore(&bp->lock, flags);
1172
1173 func_exit();
1174}
1175
1176
1177
1178static int sx_setup_port(struct specialix_board *bp,
1179 struct specialix_port *port)
1180{
1181 unsigned long flags;
1182
1183 func_enter();
1184
1185 if (port->port.flags & ASYNC_INITIALIZED) {
1186 func_exit();
1187 return 0;
1188 }
1189
1190 if (!port->xmit_buf) {
1191
1192 unsigned long tmp;
1193
1194 tmp = get_zeroed_page(GFP_KERNEL);
1195 if (tmp == 0L) {
1196 func_exit();
1197 return -ENOMEM;
1198 }
1199
1200 if (port->xmit_buf) {
1201 free_page(tmp);
1202 func_exit();
1203 return -ERESTARTSYS;
1204 }
1205 port->xmit_buf = (unsigned char *) tmp;
1206 }
1207
1208 spin_lock_irqsave(&port->lock, flags);
1209
1210 if (port->port.tty)
1211 clear_bit(TTY_IO_ERROR, &port->port.tty->flags);
1212
1213 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1214 sx_change_speed(bp, port);
1215 port->port.flags |= ASYNC_INITIALIZED;
1216
1217 spin_unlock_irqrestore(&port->lock, flags);
1218
1219
1220 func_exit();
1221 return 0;
1222}
1223
1224
1225
1226static void sx_shutdown_port(struct specialix_board *bp,
1227 struct specialix_port *port)
1228{
1229 struct tty_struct *tty;
1230 int i;
1231 unsigned long flags;
1232
1233 func_enter();
1234
1235 if (!(port->port.flags & ASYNC_INITIALIZED)) {
1236 func_exit();
1237 return;
1238 }
1239
1240 if (sx_debug & SX_DEBUG_FIFO) {
1241 dprintk(SX_DEBUG_FIFO,
1242 "sx%d: port %d: %ld overruns, FIFO hits [ ",
1243 board_No(bp), port_No(port), port->overrun);
1244 for (i = 0; i < 10; i++)
1245 dprintk(SX_DEBUG_FIFO, "%ld ", port->hits[i]);
1246 dprintk(SX_DEBUG_FIFO, "].\n");
1247 }
1248
1249 if (port->xmit_buf) {
1250 free_page((unsigned long) port->xmit_buf);
1251 port->xmit_buf = NULL;
1252 }
1253
1254
1255 spin_lock_irqsave(&bp->lock, flags);
1256 sx_out(bp, CD186x_CAR, port_No(port));
1257
1258 tty = port->port.tty;
1259 if (tty == NULL || C_HUPCL(tty)) {
1260
1261 sx_out(bp, CD186x_MSVDTR, 0);
1262 }
1263 spin_unlock_irqrestore(&bp->lock, flags);
1264
1265 sx_wait_CCR(bp);
1266 spin_lock_irqsave(&bp->lock, flags);
1267 sx_out(bp, CD186x_CCR, CCR_SOFTRESET);
1268
1269 port->IER = 0;
1270 sx_out(bp, CD186x_IER, port->IER);
1271 spin_unlock_irqrestore(&bp->lock, flags);
1272 if (tty)
1273 set_bit(TTY_IO_ERROR, &tty->flags);
1274 port->port.flags &= ~ASYNC_INITIALIZED;
1275
1276 if (!bp->count)
1277 sx_shutdown_board(bp);
1278 func_exit();
1279}
1280
1281
1282static int block_til_ready(struct tty_struct *tty, struct file *filp,
1283 struct specialix_port *port)
1284{
1285 DECLARE_WAITQUEUE(wait, current);
1286 struct specialix_board *bp = port_Board(port);
1287 int retval;
1288 int do_clocal = 0;
1289 int CD;
1290 unsigned long flags;
1291
1292 func_enter();
1293
1294
1295
1296
1297
1298 if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
1299 interruptible_sleep_on(&port->port.close_wait);
1300 if (port->port.flags & ASYNC_HUP_NOTIFY) {
1301 func_exit();
1302 return -EAGAIN;
1303 } else {
1304 func_exit();
1305 return -ERESTARTSYS;
1306 }
1307 }
1308
1309
1310
1311
1312
1313 if ((filp->f_flags & O_NONBLOCK) ||
1314 (tty->flags & (1 << TTY_IO_ERROR))) {
1315 port->port.flags |= ASYNC_NORMAL_ACTIVE;
1316 func_exit();
1317 return 0;
1318 }
1319
1320 if (C_CLOCAL(tty))
1321 do_clocal = 1;
1322
1323
1324
1325
1326
1327
1328
1329
1330 retval = 0;
1331 add_wait_queue(&port->port.open_wait, &wait);
1332 spin_lock_irqsave(&port->lock, flags);
1333 if (!tty_hung_up_p(filp))
1334 port->port.count--;
1335 spin_unlock_irqrestore(&port->lock, flags);
1336 port->port.blocked_open++;
1337 while (1) {
1338 spin_lock_irqsave(&bp->lock, flags);
1339 sx_out(bp, CD186x_CAR, port_No(port));
1340 CD = sx_in(bp, CD186x_MSVR) & MSVR_CD;
1341 if (sx_crtscts(tty)) {
1342
1343 port->MSVR |= MSVR_DTR;
1344 sx_out(bp, CD186x_MSVR, port->MSVR);
1345 } else {
1346
1347 port->MSVR |= MSVR_DTR;
1348 sx_out(bp, CD186x_MSVR, port->MSVR);
1349 }
1350 spin_unlock_irqrestore(&bp->lock, flags);
1351 set_current_state(TASK_INTERRUPTIBLE);
1352 if (tty_hung_up_p(filp) ||
1353 !(port->port.flags & ASYNC_INITIALIZED)) {
1354 if (port->port.flags & ASYNC_HUP_NOTIFY)
1355 retval = -EAGAIN;
1356 else
1357 retval = -ERESTARTSYS;
1358 break;
1359 }
1360 if (!(port->port.flags & ASYNC_CLOSING) &&
1361 (do_clocal || CD))
1362 break;
1363 if (signal_pending(current)) {
1364 retval = -ERESTARTSYS;
1365 break;
1366 }
1367 tty_unlock();
1368 schedule();
1369 tty_lock();
1370 }
1371
1372 set_current_state(TASK_RUNNING);
1373 remove_wait_queue(&port->port.open_wait, &wait);
1374 spin_lock_irqsave(&port->lock, flags);
1375 if (!tty_hung_up_p(filp))
1376 port->port.count++;
1377 port->port.blocked_open--;
1378 spin_unlock_irqrestore(&port->lock, flags);
1379 if (retval) {
1380 func_exit();
1381 return retval;
1382 }
1383
1384 port->port.flags |= ASYNC_NORMAL_ACTIVE;
1385 func_exit();
1386 return 0;
1387}
1388
1389
1390static int sx_open(struct tty_struct *tty, struct file *filp)
1391{
1392 int board;
1393 int error;
1394 struct specialix_port *port;
1395 struct specialix_board *bp;
1396 int i;
1397 unsigned long flags;
1398
1399 func_enter();
1400
1401 board = SX_BOARD(tty->index);
1402
1403 if (board >= SX_NBOARD || !(sx_board[board].flags & SX_BOARD_PRESENT)) {
1404 func_exit();
1405 return -ENODEV;
1406 }
1407
1408 bp = &sx_board[board];
1409 port = sx_port + board * SX_NPORT + SX_PORT(tty->index);
1410 port->overrun = 0;
1411 for (i = 0; i < 10; i++)
1412 port->hits[i] = 0;
1413
1414 dprintk(SX_DEBUG_OPEN,
1415 "Board = %d, bp = %p, port = %p, portno = %d.\n",
1416 board, bp, port, SX_PORT(tty->index));
1417
1418 if (sx_paranoia_check(port, tty->name, "sx_open")) {
1419 func_enter();
1420 return -ENODEV;
1421 }
1422
1423 error = sx_setup_board(bp);
1424 if (error) {
1425 func_exit();
1426 return error;
1427 }
1428
1429 spin_lock_irqsave(&bp->lock, flags);
1430 port->port.count++;
1431 bp->count++;
1432 tty->driver_data = port;
1433 port->port.tty = tty;
1434 spin_unlock_irqrestore(&bp->lock, flags);
1435
1436 error = sx_setup_port(bp, port);
1437 if (error) {
1438 func_enter();
1439 return error;
1440 }
1441
1442 error = block_til_ready(tty, filp, port);
1443 if (error) {
1444 func_enter();
1445 return error;
1446 }
1447
1448 func_exit();
1449 return 0;
1450}
1451
1452static void sx_flush_buffer(struct tty_struct *tty)
1453{
1454 struct specialix_port *port = tty->driver_data;
1455 unsigned long flags;
1456 struct specialix_board *bp;
1457
1458 func_enter();
1459
1460 if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) {
1461 func_exit();
1462 return;
1463 }
1464
1465 bp = port_Board(port);
1466 spin_lock_irqsave(&port->lock, flags);
1467 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1468 spin_unlock_irqrestore(&port->lock, flags);
1469 tty_wakeup(tty);
1470
1471 func_exit();
1472}
1473
1474static void sx_close(struct tty_struct *tty, struct file *filp)
1475{
1476 struct specialix_port *port = tty->driver_data;
1477 struct specialix_board *bp;
1478 unsigned long flags;
1479 unsigned long timeout;
1480
1481 func_enter();
1482 if (!port || sx_paranoia_check(port, tty->name, "close")) {
1483 func_exit();
1484 return;
1485 }
1486 spin_lock_irqsave(&port->lock, flags);
1487
1488 if (tty_hung_up_p(filp)) {
1489 spin_unlock_irqrestore(&port->lock, flags);
1490 func_exit();
1491 return;
1492 }
1493
1494 bp = port_Board(port);
1495 if (tty->count == 1 && port->port.count != 1) {
1496 printk(KERN_ERR "sx%d: sx_close: bad port count;"
1497 " tty->count is 1, port count is %d\n",
1498 board_No(bp), port->port.count);
1499 port->port.count = 1;
1500 }
1501
1502 if (port->port.count > 1) {
1503 port->port.count--;
1504 bp->count--;
1505
1506 spin_unlock_irqrestore(&port->lock, flags);
1507
1508 func_exit();
1509 return;
1510 }
1511 port->port.flags |= ASYNC_CLOSING;
1512
1513
1514
1515
1516 tty->closing = 1;
1517 spin_unlock_irqrestore(&port->lock, flags);
1518 dprintk(SX_DEBUG_OPEN, "Closing\n");
1519 if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
1520 tty_wait_until_sent(tty, port->port.closing_wait);
1521
1522
1523
1524
1525
1526
1527 dprintk(SX_DEBUG_OPEN, "Closed\n");
1528 port->IER &= ~IER_RXD;
1529 if (port->port.flags & ASYNC_INITIALIZED) {
1530 port->IER &= ~IER_TXRDY;
1531 port->IER |= IER_TXEMPTY;
1532 spin_lock_irqsave(&bp->lock, flags);
1533 sx_out(bp, CD186x_CAR, port_No(port));
1534 sx_out(bp, CD186x_IER, port->IER);
1535 spin_unlock_irqrestore(&bp->lock, flags);
1536
1537
1538
1539
1540
1541 timeout = jiffies+HZ;
1542 while (port->IER & IER_TXEMPTY) {
1543 set_current_state(TASK_INTERRUPTIBLE);
1544 msleep_interruptible(jiffies_to_msecs(port->timeout));
1545 if (time_after(jiffies, timeout)) {
1546 printk(KERN_INFO "Timeout waiting for close\n");
1547 break;
1548 }
1549 }
1550
1551 }
1552
1553 if (--bp->count < 0) {
1554 printk(KERN_ERR
1555 "sx%d: sx_shutdown_port: bad board count: %d port: %d\n",
1556 board_No(bp), bp->count, tty->index);
1557 bp->count = 0;
1558 }
1559 if (--port->port.count < 0) {
1560 printk(KERN_ERR
1561 "sx%d: sx_close: bad port count for tty%d: %d\n",
1562 board_No(bp), port_No(port), port->port.count);
1563 port->port.count = 0;
1564 }
1565
1566 sx_shutdown_port(bp, port);
1567 sx_flush_buffer(tty);
1568 tty_ldisc_flush(tty);
1569 spin_lock_irqsave(&port->lock, flags);
1570 tty->closing = 0;
1571 port->port.tty = NULL;
1572 spin_unlock_irqrestore(&port->lock, flags);
1573 if (port->port.blocked_open) {
1574 if (port->port.close_delay)
1575 msleep_interruptible(
1576 jiffies_to_msecs(port->port.close_delay));
1577 wake_up_interruptible(&port->port.open_wait);
1578 }
1579 port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1580 wake_up_interruptible(&port->port.close_wait);
1581
1582 func_exit();
1583}
1584
1585
1586static int sx_write(struct tty_struct *tty,
1587 const unsigned char *buf, int count)
1588{
1589 struct specialix_port *port = tty->driver_data;
1590 struct specialix_board *bp;
1591 int c, total = 0;
1592 unsigned long flags;
1593
1594 func_enter();
1595 if (sx_paranoia_check(port, tty->name, "sx_write")) {
1596 func_exit();
1597 return 0;
1598 }
1599
1600 bp = port_Board(port);
1601
1602 if (!port->xmit_buf) {
1603 func_exit();
1604 return 0;
1605 }
1606
1607 while (1) {
1608 spin_lock_irqsave(&port->lock, flags);
1609 c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
1610 SERIAL_XMIT_SIZE - port->xmit_head));
1611 if (c <= 0) {
1612 spin_unlock_irqrestore(&port->lock, flags);
1613 break;
1614 }
1615 memcpy(port->xmit_buf + port->xmit_head, buf, c);
1616 port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
1617 port->xmit_cnt += c;
1618 spin_unlock_irqrestore(&port->lock, flags);
1619
1620 buf += c;
1621 count -= c;
1622 total += c;
1623 }
1624
1625 spin_lock_irqsave(&bp->lock, flags);
1626 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
1627 !(port->IER & IER_TXRDY)) {
1628 port->IER |= IER_TXRDY;
1629 sx_out(bp, CD186x_CAR, port_No(port));
1630 sx_out(bp, CD186x_IER, port->IER);
1631 }
1632 spin_unlock_irqrestore(&bp->lock, flags);
1633 func_exit();
1634
1635 return total;
1636}
1637
1638
1639static int sx_put_char(struct tty_struct *tty, unsigned char ch)
1640{
1641 struct specialix_port *port = tty->driver_data;
1642 unsigned long flags;
1643 struct specialix_board *bp;
1644
1645 func_enter();
1646
1647 if (sx_paranoia_check(port, tty->name, "sx_put_char")) {
1648 func_exit();
1649 return 0;
1650 }
1651 dprintk(SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf);
1652 if (!port->xmit_buf) {
1653 func_exit();
1654 return 0;
1655 }
1656 bp = port_Board(port);
1657 spin_lock_irqsave(&port->lock, flags);
1658
1659 dprintk(SX_DEBUG_TX, "xmit_cnt: %d xmit_buf: %p\n",
1660 port->xmit_cnt, port->xmit_buf);
1661 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1 || !port->xmit_buf) {
1662 spin_unlock_irqrestore(&port->lock, flags);
1663 dprintk(SX_DEBUG_TX, "Exit size\n");
1664 func_exit();
1665 return 0;
1666 }
1667 dprintk(SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf);
1668 port->xmit_buf[port->xmit_head++] = ch;
1669 port->xmit_head &= SERIAL_XMIT_SIZE - 1;
1670 port->xmit_cnt++;
1671 spin_unlock_irqrestore(&port->lock, flags);
1672
1673 func_exit();
1674 return 1;
1675}
1676
1677
1678static void sx_flush_chars(struct tty_struct *tty)
1679{
1680 struct specialix_port *port = tty->driver_data;
1681 unsigned long flags;
1682 struct specialix_board *bp = port_Board(port);
1683
1684 func_enter();
1685
1686 if (sx_paranoia_check(port, tty->name, "sx_flush_chars")) {
1687 func_exit();
1688 return;
1689 }
1690 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1691 !port->xmit_buf) {
1692 func_exit();
1693 return;
1694 }
1695 spin_lock_irqsave(&bp->lock, flags);
1696 port->IER |= IER_TXRDY;
1697 sx_out(port_Board(port), CD186x_CAR, port_No(port));
1698 sx_out(port_Board(port), CD186x_IER, port->IER);
1699 spin_unlock_irqrestore(&bp->lock, flags);
1700
1701 func_exit();
1702}
1703
1704
1705static int sx_write_room(struct tty_struct *tty)
1706{
1707 struct specialix_port *port = tty->driver_data;
1708 int ret;
1709
1710 func_enter();
1711
1712 if (sx_paranoia_check(port, tty->name, "sx_write_room")) {
1713 func_exit();
1714 return 0;
1715 }
1716
1717 ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1718 if (ret < 0)
1719 ret = 0;
1720
1721 func_exit();
1722 return ret;
1723}
1724
1725
1726static int sx_chars_in_buffer(struct tty_struct *tty)
1727{
1728 struct specialix_port *port = tty->driver_data;
1729
1730 func_enter();
1731
1732 if (sx_paranoia_check(port, tty->name, "sx_chars_in_buffer")) {
1733 func_exit();
1734 return 0;
1735 }
1736 func_exit();
1737 return port->xmit_cnt;
1738}
1739
1740static int sx_tiocmget(struct tty_struct *tty, struct file *file)
1741{
1742 struct specialix_port *port = tty->driver_data;
1743 struct specialix_board *bp;
1744 unsigned char status;
1745 unsigned int result;
1746 unsigned long flags;
1747
1748 func_enter();
1749
1750 if (sx_paranoia_check(port, tty->name, __func__)) {
1751 func_exit();
1752 return -ENODEV;
1753 }
1754
1755 bp = port_Board(port);
1756 spin_lock_irqsave(&bp->lock, flags);
1757 sx_out(bp, CD186x_CAR, port_No(port));
1758 status = sx_in(bp, CD186x_MSVR);
1759 spin_unlock_irqrestore(&bp->lock, flags);
1760 dprintk(SX_DEBUG_INIT, "Got msvr[%d] = %02x, car = %d.\n",
1761 port_No(port), status, sx_in(bp, CD186x_CAR));
1762 dprintk(SX_DEBUG_INIT, "sx_port = %p, port = %p\n", sx_port, port);
1763 if (sx_crtscts(port->port.tty)) {
1764 result = TIOCM_DTR | TIOCM_DSR
1765 | ((status & MSVR_DTR) ? TIOCM_RTS : 0)
1766 | ((status & MSVR_CD) ? TIOCM_CAR : 0)
1767 | ((status & MSVR_CTS) ? TIOCM_CTS : 0);
1768 } else {
1769 result = TIOCM_RTS | TIOCM_DSR
1770 | ((status & MSVR_DTR) ? TIOCM_DTR : 0)
1771 | ((status & MSVR_CD) ? TIOCM_CAR : 0)
1772 | ((status & MSVR_CTS) ? TIOCM_CTS : 0);
1773 }
1774
1775 func_exit();
1776
1777 return result;
1778}
1779
1780
1781static int sx_tiocmset(struct tty_struct *tty, struct file *file,
1782 unsigned int set, unsigned int clear)
1783{
1784 struct specialix_port *port = tty->driver_data;
1785 unsigned long flags;
1786 struct specialix_board *bp;
1787
1788 func_enter();
1789
1790 if (sx_paranoia_check(port, tty->name, __func__)) {
1791 func_exit();
1792 return -ENODEV;
1793 }
1794
1795 bp = port_Board(port);
1796
1797 spin_lock_irqsave(&port->lock, flags);
1798 if (sx_crtscts(port->port.tty)) {
1799 if (set & TIOCM_RTS)
1800 port->MSVR |= MSVR_DTR;
1801 } else {
1802 if (set & TIOCM_DTR)
1803 port->MSVR |= MSVR_DTR;
1804 }
1805 if (sx_crtscts(port->port.tty)) {
1806 if (clear & TIOCM_RTS)
1807 port->MSVR &= ~MSVR_DTR;
1808 } else {
1809 if (clear & TIOCM_DTR)
1810 port->MSVR &= ~MSVR_DTR;
1811 }
1812 spin_lock(&bp->lock);
1813 sx_out(bp, CD186x_CAR, port_No(port));
1814 sx_out(bp, CD186x_MSVR, port->MSVR);
1815 spin_unlock(&bp->lock);
1816 spin_unlock_irqrestore(&port->lock, flags);
1817 func_exit();
1818 return 0;
1819}
1820
1821
1822static int sx_send_break(struct tty_struct *tty, int length)
1823{
1824 struct specialix_port *port = tty->driver_data;
1825 struct specialix_board *bp = port_Board(port);
1826 unsigned long flags;
1827
1828 func_enter();
1829 if (length == 0 || length == -1)
1830 return -EOPNOTSUPP;
1831
1832 spin_lock_irqsave(&port->lock, flags);
1833 port->break_length = SPECIALIX_TPS / HZ * length;
1834 port->COR2 |= COR2_ETC;
1835 port->IER |= IER_TXRDY;
1836 spin_lock(&bp->lock);
1837 sx_out(bp, CD186x_CAR, port_No(port));
1838 sx_out(bp, CD186x_COR2, port->COR2);
1839 sx_out(bp, CD186x_IER, port->IER);
1840 spin_unlock(&bp->lock);
1841 spin_unlock_irqrestore(&port->lock, flags);
1842 sx_wait_CCR(bp);
1843 spin_lock_irqsave(&bp->lock, flags);
1844 sx_out(bp, CD186x_CCR, CCR_CORCHG2);
1845 spin_unlock_irqrestore(&bp->lock, flags);
1846 sx_wait_CCR(bp);
1847
1848 func_exit();
1849 return 0;
1850}
1851
1852
1853static int sx_set_serial_info(struct specialix_port *port,
1854 struct serial_struct __user *newinfo)
1855{
1856 struct serial_struct tmp;
1857 struct specialix_board *bp = port_Board(port);
1858 int change_speed;
1859
1860 func_enter();
1861
1862 if (copy_from_user(&tmp, newinfo, sizeof(tmp))) {
1863 func_enter();
1864 return -EFAULT;
1865 }
1866
1867 mutex_lock(&port->port.mutex);
1868 change_speed = ((port->port.flags & ASYNC_SPD_MASK) !=
1869 (tmp.flags & ASYNC_SPD_MASK));
1870 change_speed |= (tmp.custom_divisor != port->custom_divisor);
1871
1872 if (!capable(CAP_SYS_ADMIN)) {
1873 if ((tmp.close_delay != port->port.close_delay) ||
1874 (tmp.closing_wait != port->port.closing_wait) ||
1875 ((tmp.flags & ~ASYNC_USR_MASK) !=
1876 (port->port.flags & ~ASYNC_USR_MASK))) {
1877 func_exit();
1878 mutex_unlock(&port->port.mutex);
1879 return -EPERM;
1880 }
1881 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
1882 (tmp.flags & ASYNC_USR_MASK));
1883 port->custom_divisor = tmp.custom_divisor;
1884 } else {
1885 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
1886 (tmp.flags & ASYNC_FLAGS));
1887 port->port.close_delay = tmp.close_delay;
1888 port->port.closing_wait = tmp.closing_wait;
1889 port->custom_divisor = tmp.custom_divisor;
1890 }
1891 if (change_speed)
1892 sx_change_speed(bp, port);
1893
1894 func_exit();
1895 mutex_unlock(&port->port.mutex);
1896 return 0;
1897}
1898
1899
1900static int sx_get_serial_info(struct specialix_port *port,
1901 struct serial_struct __user *retinfo)
1902{
1903 struct serial_struct tmp;
1904 struct specialix_board *bp = port_Board(port);
1905
1906 func_enter();
1907
1908 memset(&tmp, 0, sizeof(tmp));
1909 mutex_lock(&port->port.mutex);
1910 tmp.type = PORT_CIRRUS;
1911 tmp.line = port - sx_port;
1912 tmp.port = bp->base;
1913 tmp.irq = bp->irq;
1914 tmp.flags = port->port.flags;
1915 tmp.baud_base = (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC;
1916 tmp.close_delay = port->port.close_delay * HZ/100;
1917 tmp.closing_wait = port->port.closing_wait * HZ/100;
1918 tmp.custom_divisor = port->custom_divisor;
1919 tmp.xmit_fifo_size = CD186x_NFIFO;
1920 mutex_unlock(&port->port.mutex);
1921 if (copy_to_user(retinfo, &tmp, sizeof(tmp))) {
1922 func_exit();
1923 return -EFAULT;
1924 }
1925
1926 func_exit();
1927 return 0;
1928}
1929
1930
1931static int sx_ioctl(struct tty_struct *tty, struct file *filp,
1932 unsigned int cmd, unsigned long arg)
1933{
1934 struct specialix_port *port = tty->driver_data;
1935 void __user *argp = (void __user *)arg;
1936
1937 func_enter();
1938
1939 if (sx_paranoia_check(port, tty->name, "sx_ioctl")) {
1940 func_exit();
1941 return -ENODEV;
1942 }
1943
1944 switch (cmd) {
1945 case TIOCGSERIAL:
1946 func_exit();
1947 return sx_get_serial_info(port, argp);
1948 case TIOCSSERIAL:
1949 func_exit();
1950 return sx_set_serial_info(port, argp);
1951 default:
1952 func_exit();
1953 return -ENOIOCTLCMD;
1954 }
1955 func_exit();
1956 return 0;
1957}
1958
1959
1960static void sx_throttle(struct tty_struct *tty)
1961{
1962 struct specialix_port *port = tty->driver_data;
1963 struct specialix_board *bp;
1964 unsigned long flags;
1965
1966 func_enter();
1967
1968 if (sx_paranoia_check(port, tty->name, "sx_throttle")) {
1969 func_exit();
1970 return;
1971 }
1972
1973 bp = port_Board(port);
1974
1975
1976 if (sx_crtscts(tty))
1977 port->MSVR &= ~MSVR_DTR;
1978 else {
1979
1980
1981
1982
1983 printk(KERN_ERR
1984 "sx%d: Need to throttle, but can't (hardware hs is off)\n",
1985 port_No(port));
1986 }
1987 spin_lock_irqsave(&bp->lock, flags);
1988 sx_out(bp, CD186x_CAR, port_No(port));
1989 spin_unlock_irqrestore(&bp->lock, flags);
1990 if (I_IXOFF(tty)) {
1991 sx_wait_CCR(bp);
1992 spin_lock_irqsave(&bp->lock, flags);
1993 sx_out(bp, CD186x_CCR, CCR_SSCH2);
1994 spin_unlock_irqrestore(&bp->lock, flags);
1995 sx_wait_CCR(bp);
1996 }
1997 spin_lock_irqsave(&bp->lock, flags);
1998 sx_out(bp, CD186x_MSVR, port->MSVR);
1999 spin_unlock_irqrestore(&bp->lock, flags);
2000
2001 func_exit();
2002}
2003
2004
2005static void sx_unthrottle(struct tty_struct *tty)
2006{
2007 struct specialix_port *port = tty->driver_data;
2008 struct specialix_board *bp;
2009 unsigned long flags;
2010
2011 func_enter();
2012
2013 if (sx_paranoia_check(port, tty->name, "sx_unthrottle")) {
2014 func_exit();
2015 return;
2016 }
2017
2018 bp = port_Board(port);
2019
2020 spin_lock_irqsave(&port->lock, flags);
2021
2022 if (sx_crtscts(tty))
2023 port->MSVR |= MSVR_DTR;
2024
2025 spin_lock(&bp->lock);
2026 sx_out(bp, CD186x_CAR, port_No(port));
2027 spin_unlock(&bp->lock);
2028 if (I_IXOFF(tty)) {
2029 spin_unlock_irqrestore(&port->lock, flags);
2030 sx_wait_CCR(bp);
2031 spin_lock_irqsave(&bp->lock, flags);
2032 sx_out(bp, CD186x_CCR, CCR_SSCH1);
2033 spin_unlock_irqrestore(&bp->lock, flags);
2034 sx_wait_CCR(bp);
2035 spin_lock_irqsave(&port->lock, flags);
2036 }
2037 spin_lock(&bp->lock);
2038 sx_out(bp, CD186x_MSVR, port->MSVR);
2039 spin_unlock(&bp->lock);
2040 spin_unlock_irqrestore(&port->lock, flags);
2041
2042 func_exit();
2043}
2044
2045
2046static void sx_stop(struct tty_struct *tty)
2047{
2048 struct specialix_port *port = tty->driver_data;
2049 struct specialix_board *bp;
2050 unsigned long flags;
2051
2052 func_enter();
2053
2054 if (sx_paranoia_check(port, tty->name, "sx_stop")) {
2055 func_exit();
2056 return;
2057 }
2058
2059 bp = port_Board(port);
2060
2061 spin_lock_irqsave(&port->lock, flags);
2062 port->IER &= ~IER_TXRDY;
2063 spin_lock(&bp->lock);
2064 sx_out(bp, CD186x_CAR, port_No(port));
2065 sx_out(bp, CD186x_IER, port->IER);
2066 spin_unlock(&bp->lock);
2067 spin_unlock_irqrestore(&port->lock, flags);
2068
2069 func_exit();
2070}
2071
2072
2073static void sx_start(struct tty_struct *tty)
2074{
2075 struct specialix_port *port = tty->driver_data;
2076 struct specialix_board *bp;
2077 unsigned long flags;
2078
2079 func_enter();
2080
2081 if (sx_paranoia_check(port, tty->name, "sx_start")) {
2082 func_exit();
2083 return;
2084 }
2085
2086 bp = port_Board(port);
2087
2088 spin_lock_irqsave(&port->lock, flags);
2089 if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) {
2090 port->IER |= IER_TXRDY;
2091 spin_lock(&bp->lock);
2092 sx_out(bp, CD186x_CAR, port_No(port));
2093 sx_out(bp, CD186x_IER, port->IER);
2094 spin_unlock(&bp->lock);
2095 }
2096 spin_unlock_irqrestore(&port->lock, flags);
2097
2098 func_exit();
2099}
2100
2101static void sx_hangup(struct tty_struct *tty)
2102{
2103 struct specialix_port *port = tty->driver_data;
2104 struct specialix_board *bp;
2105 unsigned long flags;
2106
2107 func_enter();
2108
2109 if (sx_paranoia_check(port, tty->name, "sx_hangup")) {
2110 func_exit();
2111 return;
2112 }
2113
2114 bp = port_Board(port);
2115
2116 sx_shutdown_port(bp, port);
2117 spin_lock_irqsave(&port->lock, flags);
2118 bp->count -= port->port.count;
2119 if (bp->count < 0) {
2120 printk(KERN_ERR
2121 "sx%d: sx_hangup: bad board count: %d port: %d\n",
2122 board_No(bp), bp->count, tty->index);
2123 bp->count = 0;
2124 }
2125 port->port.count = 0;
2126 port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
2127 port->port.tty = NULL;
2128 spin_unlock_irqrestore(&port->lock, flags);
2129 wake_up_interruptible(&port->port.open_wait);
2130
2131 func_exit();
2132}
2133
2134
2135static void sx_set_termios(struct tty_struct *tty,
2136 struct ktermios *old_termios)
2137{
2138 struct specialix_port *port = tty->driver_data;
2139 unsigned long flags;
2140 struct specialix_board *bp;
2141
2142 if (sx_paranoia_check(port, tty->name, "sx_set_termios"))
2143 return;
2144
2145 bp = port_Board(port);
2146 spin_lock_irqsave(&port->lock, flags);
2147 sx_change_speed(port_Board(port), port);
2148 spin_unlock_irqrestore(&port->lock, flags);
2149
2150 if ((old_termios->c_cflag & CRTSCTS) &&
2151 !(tty->termios->c_cflag & CRTSCTS)) {
2152 tty->hw_stopped = 0;
2153 sx_start(tty);
2154 }
2155}
2156
2157static const struct tty_operations sx_ops = {
2158 .open = sx_open,
2159 .close = sx_close,
2160 .write = sx_write,
2161 .put_char = sx_put_char,
2162 .flush_chars = sx_flush_chars,
2163 .write_room = sx_write_room,
2164 .chars_in_buffer = sx_chars_in_buffer,
2165 .flush_buffer = sx_flush_buffer,
2166 .ioctl = sx_ioctl,
2167 .throttle = sx_throttle,
2168 .unthrottle = sx_unthrottle,
2169 .set_termios = sx_set_termios,
2170 .stop = sx_stop,
2171 .start = sx_start,
2172 .hangup = sx_hangup,
2173 .tiocmget = sx_tiocmget,
2174 .tiocmset = sx_tiocmset,
2175 .break_ctl = sx_send_break,
2176};
2177
2178static int sx_init_drivers(void)
2179{
2180 int error;
2181 int i;
2182
2183 func_enter();
2184
2185 specialix_driver = alloc_tty_driver(SX_NBOARD * SX_NPORT);
2186 if (!specialix_driver) {
2187 printk(KERN_ERR "sx: Couldn't allocate tty_driver.\n");
2188 func_exit();
2189 return 1;
2190 }
2191
2192 specialix_driver->owner = THIS_MODULE;
2193 specialix_driver->name = "ttyW";
2194 specialix_driver->major = SPECIALIX_NORMAL_MAJOR;
2195 specialix_driver->type = TTY_DRIVER_TYPE_SERIAL;
2196 specialix_driver->subtype = SERIAL_TYPE_NORMAL;
2197 specialix_driver->init_termios = tty_std_termios;
2198 specialix_driver->init_termios.c_cflag =
2199 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2200 specialix_driver->init_termios.c_ispeed = 9600;
2201 specialix_driver->init_termios.c_ospeed = 9600;
2202 specialix_driver->flags = TTY_DRIVER_REAL_RAW |
2203 TTY_DRIVER_HARDWARE_BREAK;
2204 tty_set_operations(specialix_driver, &sx_ops);
2205
2206 error = tty_register_driver(specialix_driver);
2207 if (error) {
2208 put_tty_driver(specialix_driver);
2209 printk(KERN_ERR
2210 "sx: Couldn't register specialix IO8+ driver, error = %d\n",
2211 error);
2212 func_exit();
2213 return 1;
2214 }
2215 memset(sx_port, 0, sizeof(sx_port));
2216 for (i = 0; i < SX_NPORT * SX_NBOARD; i++) {
2217 sx_port[i].magic = SPECIALIX_MAGIC;
2218 tty_port_init(&sx_port[i].port);
2219 spin_lock_init(&sx_port[i].lock);
2220 }
2221
2222 func_exit();
2223 return 0;
2224}
2225
2226static void sx_release_drivers(void)
2227{
2228 func_enter();
2229
2230 tty_unregister_driver(specialix_driver);
2231 put_tty_driver(specialix_driver);
2232 func_exit();
2233}
2234
2235
2236
2237
2238static int __init specialix_init(void)
2239{
2240 int i;
2241 int found = 0;
2242
2243 func_enter();
2244
2245 printk(KERN_INFO "sx: Specialix IO8+ driver v" VERSION ", (c) R.E.Wolff 1997/1998.\n");
2246 printk(KERN_INFO "sx: derived from work (c) D.Gorodchanin 1994-1996.\n");
2247 if (sx_rtscts)
2248 printk(KERN_INFO
2249 "sx: DTR/RTS pin is RTS when CRTSCTS is on.\n");
2250 else
2251 printk(KERN_INFO "sx: DTR/RTS pin is always RTS.\n");
2252
2253 for (i = 0; i < SX_NBOARD; i++)
2254 spin_lock_init(&sx_board[i].lock);
2255
2256 if (sx_init_drivers()) {
2257 func_exit();
2258 return -EIO;
2259 }
2260
2261 for (i = 0; i < SX_NBOARD; i++)
2262 if (sx_board[i].base && !sx_probe(&sx_board[i]))
2263 found++;
2264
2265#ifdef CONFIG_PCI
2266 {
2267 struct pci_dev *pdev = NULL;
2268
2269 i = 0;
2270 while (i < SX_NBOARD) {
2271 if (sx_board[i].flags & SX_BOARD_PRESENT) {
2272 i++;
2273 continue;
2274 }
2275 pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX,
2276 PCI_DEVICE_ID_SPECIALIX_IO8, pdev);
2277 if (!pdev)
2278 break;
2279
2280 if (pci_enable_device(pdev))
2281 continue;
2282
2283 sx_board[i].irq = pdev->irq;
2284
2285 sx_board[i].base = pci_resource_start(pdev, 2);
2286
2287 sx_board[i].flags |= SX_BOARD_IS_PCI;
2288 if (!sx_probe(&sx_board[i]))
2289 found++;
2290 }
2291
2292 if (pdev != NULL)
2293 pci_dev_put(pdev);
2294 }
2295#endif
2296
2297 if (!found) {
2298 sx_release_drivers();
2299 printk(KERN_INFO "sx: No specialix IO8+ boards detected.\n");
2300 func_exit();
2301 return -EIO;
2302 }
2303
2304 func_exit();
2305 return 0;
2306}
2307
2308static int iobase[SX_NBOARD] = {0,};
2309static int irq[SX_NBOARD] = {0,};
2310
2311module_param_array(iobase, int, NULL, 0);
2312module_param_array(irq, int, NULL, 0);
2313module_param(sx_debug, int, 0);
2314module_param(sx_rtscts, int, 0);
2315module_param(sx_rxfifo, int, 0);
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326static int __init specialix_init_module(void)
2327{
2328 int i;
2329
2330 func_enter();
2331
2332 if (iobase[0] || iobase[1] || iobase[2] || iobase[3]) {
2333 for (i = 0; i < SX_NBOARD; i++) {
2334 sx_board[i].base = iobase[i];
2335 sx_board[i].irq = irq[i];
2336 sx_board[i].count = 0;
2337 }
2338 }
2339
2340 func_exit();
2341
2342 return specialix_init();
2343}
2344
2345static void __exit specialix_exit_module(void)
2346{
2347 int i;
2348
2349 func_enter();
2350
2351 sx_release_drivers();
2352 for (i = 0; i < SX_NBOARD; i++)
2353 if (sx_board[i].flags & SX_BOARD_PRESENT)
2354 sx_release_io_range(&sx_board[i]);
2355 func_exit();
2356}
2357
2358static struct pci_device_id specialx_pci_tbl[] __devinitdata __used = {
2359 { PCI_DEVICE(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_IO8) },
2360 { }
2361};
2362MODULE_DEVICE_TABLE(pci, specialx_pci_tbl);
2363
2364module_init(specialix_init_module);
2365module_exit(specialix_exit_module);
2366
2367MODULE_LICENSE("GPL");
2368MODULE_ALIAS_CHARDEV_MAJOR(SPECIALIX_NORMAL_MAJOR);
2369