2 * specialix.c -- specialix IO8+ multiport serial driver.
4 * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
5 * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
7 * Specialix pays for the development and support of this driver.
8 * Please DO contact io8-linux@specialix.co.uk if you require
9 * support. But please read the documentation (specialix.txt)
12 * This driver was developped in the BitWizard linux device
13 * driver service. If you require a linux device driver for your
14 * product, please contact devices@BitWizard.nl for a quote.
16 * This code is firmly based on the riscom/8 serial driver,
17 * written by Dmitry Gorodchanin. The specialix IO8+ card
18 * programming information was obtained from the CL-CD1865 Data
19 * Book, and Specialix document number 6200059: IO8+ Hardware
20 * Functional Specification.
22 * This program is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU General Public License as
24 * published by the Free Software Foundation; either version 2 of
25 * the License, or (at your option) any later version.
27 * This program is distributed in the hope that it will be
28 * useful, but WITHOUT ANY WARRANTY; without even the implied
29 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
30 * PURPOSE. See the GNU General Public License for more details.
32 * You should have received a copy of the GNU General Public
33 * License along with this program; if not, write to the Free
34 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
39 * Revision 1.0: April 1st 1997.
40 * Initial release for alpha testing.
41 * Revision 1.1: April 14th 1997.
42 * Incorporated Richard Hudsons suggestions,
43 * removed some debugging printk's.
44 * Revision 1.2: April 15th 1997.
45 * Ported to 2.1.x kernels.
46 * Revision 1.3: April 17th 1997
47 * Backported to 2.0. (Compatibility macros).
48 * Revision 1.4: April 18th 1997
49 * Fixed DTR/RTS bug that caused the card to indicate
50 * "don't send data" to a modem after the password prompt.
51 * Fixed bug for premature (fake) interrupts.
52 * Revision 1.5: April 19th 1997
53 * fixed a minor typo in the header file, cleanup a little.
54 * performance warnings are now MAXed at once per minute.
55 * Revision 1.6: May 23 1997
56 * Changed the specialix=... format to include interrupt.
57 * Revision 1.7: May 27 1997
58 * Made many more debug printk's a compile time option.
59 * Revision 1.8: Jul 1 1997
60 * port to linux-2.1.43 kernel.
61 * Revision 1.9: Oct 9 1998
62 * Added stuff for the IO8+/PCI version.
63 * Revision 1.10: Oct 22 1999 / Jan 21 2000.
64 * Added stuff for setserial.
65 * Nicolas Mailhot (Nicolas.Mailhot@email.enst.fr)
69 #define VERSION "1.11"
73 * There is a bunch of documentation about the card, jumpers, config
74 * settings, restrictions, cables, device names and numbers in
75 * Documentation/specialix.txt
78 #include <linux/config.h>
79 #include <linux/module.h>
82 #include <linux/kernel.h>
83 #include <linux/sched.h>
84 #include <linux/ioport.h>
85 #include <linux/interrupt.h>
86 #include <linux/errno.h>
87 #include <linux/tty.h>
88 #include <linux/tty_flip.h>
90 #include <linux/serial.h>
91 #include <linux/fcntl.h>
92 #include <linux/major.h>
93 #include <linux/delay.h>
94 #include <linux/pci.h>
95 #include <linux/init.h>
96 #include <asm/uaccess.h>
98 #include "specialix_io8.h"
103 This driver can spew a whole lot of debugging output at you. If you
104 need maximum performance, you should disable the DEBUG define. To
105 aid in debugging in the field, I'm leaving the compile-time debug
106 features enabled, and disable them "runtime". That allows me to
107 instruct people with problems to enable debugging without requiring
113 static int sx_rxfifo = SPECIALIX_RXFIFO;
116 #define dprintk(f, str...) if (sx_debug & f) printk (str)
118 #define dprintk(f, str...) /* nothing */
121 #define SX_DEBUG_FLOW 0x0001
122 #define SX_DEBUG_DATA 0x0002
123 #define SX_DEBUG_PROBE 0x0004
124 #define SX_DEBUG_CHAN 0x0008
125 #define SX_DEBUG_INIT 0x0010
126 #define SX_DEBUG_RX 0x0020
127 #define SX_DEBUG_TX 0x0040
128 #define SX_DEBUG_IRQ 0x0080
129 #define SX_DEBUG_OPEN 0x0100
130 #define SX_DEBUG_TERMIOS 0x0200
131 #define SX_DEBUG_SIGNALS 0x0400
132 #define SX_DEBUG_FIFO 0x0800
135 #define func_enter() dprintk (SX_DEBUG_FLOW, "io8: enter %s\n",__FUNCTION__)
136 #define func_exit() dprintk (SX_DEBUG_FLOW, "io8: exit %s\n", __FUNCTION__)
138 #define jiffies_from_ms(a) ((((a) * HZ)/1000)+1)
141 /* Configurable options: */
143 /* Am I paranoid or not ? ;-) */
144 #define SPECIALIX_PARANOIA_CHECK
146 /* Do I trust the IRQ from the card? (enabeling it doesn't seem to help)
147 When the IRQ routine leaves the chip in a state that is keeps on
148 requiring attention, the timer doesn't help either. */
149 #undef SPECIALIX_TIMER
151 #ifdef SPECIALIX_TIMER
152 static int sx_poll = HZ;
158 * The following defines are mostly for testing purposes. But if you need
159 * some nice reporting in your syslog, you can define them also.
161 #undef SX_REPORT_FIFO
162 #undef SX_REPORT_OVERRUN
166 #ifdef CONFIG_SPECIALIX_RTSCTS
167 #define SX_CRTSCTS(bla) 1
169 #define SX_CRTSCTS(tty) C_CRTSCTS(tty)
173 /* Used to be outb (0xff, 0x80); */
174 #define short_pause() udelay (1)
177 #define SPECIALIX_LEGAL_FLAGS \
178 (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \
179 ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \
180 ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP)
182 #undef RS_EVENT_WRITE_WAKEUP
183 #define RS_EVENT_WRITE_WAKEUP 0
185 static struct tty_driver *specialix_driver;
186 static unsigned char * tmp_buf;
187 static DECLARE_MUTEX(tmp_buf_sem);
189 static unsigned long baud_table[] = {
190 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
191 9600, 19200, 38400, 57600, 115200, 0,
194 static struct specialix_board sx_board[SX_NBOARD] = {
195 { 0, SX_IOBASE1, 9, },
196 { 0, SX_IOBASE2, 11, },
197 { 0, SX_IOBASE3, 12, },
198 { 0, SX_IOBASE4, 15, },
201 static struct specialix_port sx_port[SX_NBOARD * SX_NPORT];
204 #ifdef SPECIALIX_TIMER
205 static struct timer_list missed_irq_timer;
206 static irqreturn_t sx_interrupt(int irq, void * dev_id, struct pt_regs * regs);
211 static inline int sx_paranoia_check(struct specialix_port const * port,
212 char *name, const char *routine)
214 #ifdef SPECIALIX_PARANOIA_CHECK
215 static const char *badmagic =
216 KERN_ERR "sx: Warning: bad specialix port magic number for device %s in %s\n";
217 static const char *badinfo =
218 KERN_ERR "sx: Warning: null specialix port for device %s in %s\n";
221 printk(badinfo, name, routine);
224 if (port->magic != SPECIALIX_MAGIC) {
225 printk(badmagic, name, routine);
235 * Service functions for specialix IO8+ driver.
239 /* Get board number from pointer */
240 static inline int board_No (struct specialix_board * bp)
242 return bp - sx_board;
246 /* Get port number from pointer */
247 static inline int port_No (struct specialix_port const * port)
249 return SX_PORT(port - sx_port);
253 /* Get pointer to board from pointer to port */
254 static inline struct specialix_board * port_Board(struct specialix_port const * port)
256 return &sx_board[SX_BOARD(port - sx_port)];
260 /* Input Byte from CL CD186x register */
261 static inline unsigned char sx_in(struct specialix_board * bp, unsigned short reg)
263 bp->reg = reg | 0x80;
264 outb (reg | 0x80, bp->base + SX_ADDR_REG);
265 return inb (bp->base + SX_DATA_REG);
269 /* Output Byte to CL CD186x register */
270 static inline void sx_out(struct specialix_board * bp, unsigned short reg,
273 bp->reg = reg | 0x80;
274 outb (reg | 0x80, bp->base + SX_ADDR_REG);
275 outb (val, bp->base + SX_DATA_REG);
279 /* Input Byte from CL CD186x register */
280 static inline unsigned char sx_in_off(struct specialix_board * bp, unsigned short reg)
283 outb (reg, bp->base + SX_ADDR_REG);
284 return inb (bp->base + SX_DATA_REG);
288 /* Output Byte to CL CD186x register */
289 static inline void sx_out_off(struct specialix_board * bp, unsigned short reg,
293 outb (reg, bp->base + SX_ADDR_REG);
294 outb (val, bp->base + SX_DATA_REG);
298 /* Wait for Channel Command Register ready */
299 static inline void sx_wait_CCR(struct specialix_board * bp)
301 unsigned long delay, flags;
304 for (delay = SX_CCR_TIMEOUT; delay; delay--) {
305 spin_lock_irqsave(&bp->lock, flags);
306 ccr = sx_in(bp, CD186x_CCR);
307 spin_unlock_irqrestore(&bp->lock, flags);
313 printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
317 /* Wait for Channel Command Register ready */
318 static inline void sx_wait_CCR_off(struct specialix_board * bp)
324 for (delay = SX_CCR_TIMEOUT; delay; delay--) {
325 spin_lock_irqsave(&bp->lock, flags);
326 crr = sx_in_off(bp, CD186x_CCR);
327 spin_unlock_irqrestore(&bp->lock, flags);
333 printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
338 * specialix IO8+ IO range functions.
341 static inline int sx_request_io_range(struct specialix_board * bp)
343 return request_region(bp->base,
344 bp->flags & SX_BOARD_IS_PCI ? SX_PCI_IO_SPACE : SX_IO_SPACE,
345 "specialix IO8+") == NULL;
349 static inline void sx_release_io_range(struct specialix_board * bp)
351 release_region(bp->base,
352 bp->flags&SX_BOARD_IS_PCI?SX_PCI_IO_SPACE:SX_IO_SPACE);
356 /* Must be called with enabled interrupts */
357 /* Ugly. Very ugly. Don't use this for anything else than initialization
359 static inline void sx_long_delay(unsigned long delay)
363 for (i = jiffies + delay; time_after(i, jiffies); ) ;
368 /* Set the IRQ using the RTS lines that run to the PAL on the board.... */
369 static int sx_set_irq ( struct specialix_board *bp)
375 if (bp->flags & SX_BOARD_IS_PCI)
378 /* In the same order as in the docs... */
379 case 15: virq = 0;break;
380 case 12: virq = 1;break;
381 case 11: virq = 2;break;
382 case 9: virq = 3;break;
383 default: printk (KERN_ERR "Speclialix: cannot set irq to %d.\n", bp->irq);
386 spin_lock_irqsave(&bp->lock, flags);
388 sx_out(bp, CD186x_CAR, i);
389 sx_out(bp, CD186x_MSVRTS, ((virq >> i) & 0x1)? MSVR_RTS:0);
391 spin_unlock_irqrestore(&bp->lock, flags);
396 /* Reset and setup CD186x chip */
397 static int sx_init_CD186x(struct specialix_board * bp)
404 sx_wait_CCR_off(bp); /* Wait for CCR ready */
405 spin_lock_irqsave(&bp->lock, flags);
406 sx_out_off(bp, CD186x_CCR, CCR_HARDRESET); /* Reset CD186x chip */
407 spin_unlock_irqrestore(&bp->lock, flags);
408 sx_long_delay(HZ/20); /* Delay 0.05 sec */
409 spin_lock_irqsave(&bp->lock, flags);
410 sx_out_off(bp, CD186x_GIVR, SX_ID); /* Set ID for this chip */
411 sx_out_off(bp, CD186x_GICR, 0); /* Clear all bits */
412 sx_out_off(bp, CD186x_PILR1, SX_ACK_MINT); /* Prio for modem intr */
413 sx_out_off(bp, CD186x_PILR2, SX_ACK_TINT); /* Prio for transmitter intr */
414 sx_out_off(bp, CD186x_PILR3, SX_ACK_RINT); /* Prio for receiver intr */
416 sx_out_off(bp, CD186x_SRCR, sx_in (bp, CD186x_SRCR) | SRCR_REGACKEN);
418 /* Setting up prescaler. We need 4 ticks per 1 ms */
419 scaler = SX_OSCFREQ/SPECIALIX_TPS;
421 sx_out_off(bp, CD186x_PPRH, scaler >> 8);
422 sx_out_off(bp, CD186x_PPRL, scaler & 0xff);
423 spin_unlock_irqrestore(&bp->lock, flags);
425 if (!sx_set_irq (bp)) {
426 /* Figure out how to pass this along... */
427 printk (KERN_ERR "Cannot set irq to %d.\n", bp->irq);
436 static int read_cross_byte (struct specialix_board *bp, int reg, int bit)
442 spin_lock_irqsave(&bp->lock, flags);
443 for (i=0, t=0;i<8;i++) {
444 sx_out_off (bp, CD186x_CAR, i);
445 if (sx_in_off (bp, reg) & bit)
448 spin_unlock_irqrestore(&bp->lock, flags);
454 #ifdef SPECIALIX_TIMER
455 void missed_irq (unsigned long data)
459 struct specialix_board *bp = (struct specialix_board *)data;
461 spin_lock_irqsave(&bp->lock, flags);
462 irq = sx_in ((struct specialix_board *)data, CD186x_SRSR) &
466 spin_unlock_irqrestore(&bp->lock, flags);
468 printk (KERN_INFO "Missed interrupt... Calling int from timer. \n");
469 sx_interrupt (((struct specialix_board *)data)->irq,
472 missed_irq_timer.expires = jiffies + sx_poll;
473 add_timer (&missed_irq_timer);
479 /* Main probing routine, also sets irq. */
480 static int sx_probe(struct specialix_board *bp)
482 unsigned char val1, val2;
492 if (sx_request_io_range(bp)) {
497 /* Are the I/O ports here ? */
498 sx_out_off(bp, CD186x_PPRL, 0x5a);
500 val1 = sx_in_off(bp, CD186x_PPRL);
502 sx_out_off(bp, CD186x_PPRL, 0xa5);
504 val2 = sx_in_off(bp, CD186x_PPRL);
507 if ((val1 != 0x5a) || (val2 != 0xa5)) {
508 printk(KERN_INFO "sx%d: specialix IO8+ Board at 0x%03x not found.\n",
509 board_No(bp), bp->base);
510 sx_release_io_range(bp);
515 /* Check the DSR lines that Specialix uses as board
517 val1 = read_cross_byte (bp, CD186x_MSVR, MSVR_DSR);
518 val2 = read_cross_byte (bp, CD186x_MSVR, MSVR_RTS);
519 dprintk (SX_DEBUG_INIT, "sx%d: DSR lines are: %02x, rts lines are: %02x\n",
520 board_No(bp), val1, val2);
522 /* They managed to switch the bit order between the docs and
523 the IO8+ card. The new PCI card now conforms to old docs.
524 They changed the PCI docs to reflect the situation on the
526 val2 = (bp->flags & SX_BOARD_IS_PCI)?0x4d : 0xb2;
528 printk(KERN_INFO "sx%d: specialix IO8+ ID %02x at 0x%03x not found (%02x).\n",
529 board_No(bp), val2, bp->base, val1);
530 sx_release_io_range(bp);
537 /* It's time to find IRQ for this board */
538 for (retries = 0; retries < 5 && irqs <= 0; retries++) {
539 irqs = probe_irq_on();
540 sx_init_CD186x(bp); /* Reset CD186x chip */
541 sx_out(bp, CD186x_CAR, 2); /* Select port 2 */
543 sx_out(bp, CD186x_CCR, CCR_TXEN); /* Enable transmitter */
544 sx_out(bp, CD186x_IER, IER_TXRDY); /* Enable tx empty intr */
545 sx_long_delay(HZ/20);
546 irqs = probe_irq_off(irqs);
548 dprintk (SX_DEBUG_INIT, "SRSR = %02x, ", sx_in(bp, CD186x_SRSR));
549 dprintk (SX_DEBUG_INIT, "TRAR = %02x, ", sx_in(bp, CD186x_TRAR));
550 dprintk (SX_DEBUG_INIT, "GIVR = %02x, ", sx_in(bp, CD186x_GIVR));
551 dprintk (SX_DEBUG_INIT, "GICR = %02x, ", sx_in(bp, CD186x_GICR));
552 dprintk (SX_DEBUG_INIT, "\n");
554 /* Reset CD186x again */
555 if (!sx_init_CD186x(bp)) {
556 /* Hmmm. This is dead code anyway. */
559 dprintk (SX_DEBUG_INIT "val1 = %02x, val2 = %02x, val3 = %02x.\n",
566 printk(KERN_ERR "sx%d: Can't find IRQ for specialix IO8+ board at 0x%03x.\n",
567 board_No(bp), bp->base);
568 sx_release_io_range(bp);
573 printk (KERN_INFO "Started with irq=%d, but now have irq=%d.\n", bp->irq, irqs);
577 /* Reset CD186x again */
578 if (!sx_init_CD186x(bp)) {
579 sx_release_io_range(bp);
584 sx_request_io_range(bp);
585 bp->flags |= SX_BOARD_PRESENT;
587 /* Chip revcode pkgtype
592 CD1865 rev A 0x83 1 -- Do not use!!! Does not work.
594 -- Thanks to Gwen Wang, Cirrus Logic.
597 switch (sx_in_off(bp, CD186x_GFRCR)) {
598 case 0x82:chip = 1864;rev='A';break;
599 case 0x83:chip = 1865;rev='A';break;
600 case 0x84:chip = 1865;rev='B';break;
601 case 0x85:chip = 1865;rev='C';break; /* Does not exist at this time */
602 default:chip=-1;rev='x';
605 dprintk (SX_DEBUG_INIT, " GFCR = 0x%02x\n", sx_in_off(bp, CD186x_GFRCR) );
607 #ifdef SPECIALIX_TIMER
608 init_timer (&missed_irq_timer);
609 missed_irq_timer.function = missed_irq;
610 missed_irq_timer.data = (unsigned long) bp;
611 missed_irq_timer.expires = jiffies + sx_poll;
612 add_timer (&missed_irq_timer);
615 printk(KERN_INFO"sx%d: specialix IO8+ board detected at 0x%03x, IRQ %d, CD%d Rev. %c.\n",
626 * Interrupt processing routines.
629 static inline void sx_mark_event(struct specialix_port * port, int event)
633 set_bit(event, &port->event);
634 schedule_work(&port->tqueue);
640 static inline struct specialix_port * sx_get_port(struct specialix_board * bp,
641 unsigned char const * what)
643 unsigned char channel;
644 struct specialix_port * port = NULL;
646 channel = sx_in(bp, CD186x_GICR) >> GICR_CHAN_OFF;
647 dprintk (SX_DEBUG_CHAN, "channel: %d\n", channel);
648 if (channel < CD186x_NCH) {
649 port = &sx_port[board_No(bp) * SX_NPORT + channel];
650 dprintk (SX_DEBUG_CHAN, "port: %d %p flags: 0x%x\n",board_No(bp) * SX_NPORT + channel, port, port->flags & ASYNC_INITIALIZED);
652 if (port->flags & ASYNC_INITIALIZED) {
653 dprintk (SX_DEBUG_CHAN, "port: %d %p\n", channel, port);
658 printk(KERN_INFO "sx%d: %s interrupt from invalid port %d\n",
659 board_No(bp), what, channel);
664 static inline void sx_receive_exc(struct specialix_board * bp)
666 struct specialix_port *port;
667 struct tty_struct *tty;
668 unsigned char status;
669 unsigned char ch, flag;
673 port = sx_get_port(bp, "Receive");
675 dprintk (SX_DEBUG_RX, "Hmm, couldn't find port.\n");
681 status = sx_in(bp, CD186x_RCSR);
683 dprintk (SX_DEBUG_RX, "status: 0x%x\n", status);
684 if (status & RCSR_OE) {
686 dprintk(SX_DEBUG_FIFO, "sx%d: port %d: Overrun. Total %ld overruns.\n",
687 board_No(bp), port_No(port), port->overrun);
689 status &= port->mark_mask;
691 /* This flip buffer check needs to be below the reading of the
692 status register to reset the chip's IRQ.... */
693 if (tty_buffer_request_room(tty, 1) == 0) {
694 dprintk(SX_DEBUG_FIFO, "sx%d: port %d: Working around flip buffer overflow.\n",
695 board_No(bp), port_No(port));
700 ch = sx_in(bp, CD186x_RDR);
705 if (status & RCSR_TOUT) {
706 printk(KERN_INFO "sx%d: port %d: Receiver timeout. Hardware problems ?\n",
707 board_No(bp), port_No(port));
711 } else if (status & RCSR_BREAK) {
712 dprintk(SX_DEBUG_RX, "sx%d: port %d: Handling break...\n",
713 board_No(bp), port_No(port));
715 if (port->flags & ASYNC_SAK)
718 } else if (status & RCSR_PE)
721 else if (status & RCSR_FE)
724 else if (status & RCSR_OE)
730 if(tty_insert_flip_char(tty, ch, flag))
731 tty_flip_buffer_push(tty);
736 static inline void sx_receive(struct specialix_board * bp)
738 struct specialix_port *port;
739 struct tty_struct *tty;
744 if (!(port = sx_get_port(bp, "Receive"))) {
745 dprintk (SX_DEBUG_RX, "Hmm, couldn't find port.\n");
751 count = sx_in(bp, CD186x_RDCR);
752 dprintk (SX_DEBUG_RX, "port: %p: count: %d\n", port, count);
753 port->hits[count > 8 ? 9 : count]++;
755 tty_buffer_request_room(tty, count);
758 tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL);
759 tty_flip_buffer_push(tty);
764 static inline void sx_transmit(struct specialix_board * bp)
766 struct specialix_port *port;
767 struct tty_struct *tty;
771 if (!(port = sx_get_port(bp, "Transmit"))) {
775 dprintk (SX_DEBUG_TX, "port: %p\n", port);
778 if (port->IER & IER_TXEMPTY) {
780 sx_out(bp, CD186x_CAR, port_No(port));
781 port->IER &= ~IER_TXEMPTY;
782 sx_out(bp, CD186x_IER, port->IER);
787 if ((port->xmit_cnt <= 0 && !port->break_length)
788 || tty->stopped || tty->hw_stopped) {
789 sx_out(bp, CD186x_CAR, port_No(port));
790 port->IER &= ~IER_TXRDY;
791 sx_out(bp, CD186x_IER, port->IER);
796 if (port->break_length) {
797 if (port->break_length > 0) {
798 if (port->COR2 & COR2_ETC) {
799 sx_out(bp, CD186x_TDR, CD186x_C_ESC);
800 sx_out(bp, CD186x_TDR, CD186x_C_SBRK);
801 port->COR2 &= ~COR2_ETC;
803 count = min_t(int, port->break_length, 0xff);
804 sx_out(bp, CD186x_TDR, CD186x_C_ESC);
805 sx_out(bp, CD186x_TDR, CD186x_C_DELAY);
806 sx_out(bp, CD186x_TDR, count);
807 if (!(port->break_length -= count))
808 port->break_length--;
810 sx_out(bp, CD186x_TDR, CD186x_C_ESC);
811 sx_out(bp, CD186x_TDR, CD186x_C_EBRK);
812 sx_out(bp, CD186x_COR2, port->COR2);
814 sx_out(bp, CD186x_CCR, CCR_CORCHG2);
815 port->break_length = 0;
822 count = CD186x_NFIFO;
824 sx_out(bp, CD186x_TDR, port->xmit_buf[port->xmit_tail++]);
825 port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
826 if (--port->xmit_cnt <= 0)
828 } while (--count > 0);
830 if (port->xmit_cnt <= 0) {
831 sx_out(bp, CD186x_CAR, port_No(port));
832 port->IER &= ~IER_TXRDY;
833 sx_out(bp, CD186x_IER, port->IER);
835 if (port->xmit_cnt <= port->wakeup_chars)
836 sx_mark_event(port, RS_EVENT_WRITE_WAKEUP);
842 static inline void sx_check_modem(struct specialix_board * bp)
844 struct specialix_port *port;
845 struct tty_struct *tty;
849 dprintk (SX_DEBUG_SIGNALS, "Modem intr. ");
850 if (!(port = sx_get_port(bp, "Modem")))
855 mcr = sx_in(bp, CD186x_MCR);
856 printk ("mcr = %02x.\n", mcr);
858 if ((mcr & MCR_CDCHG)) {
859 dprintk (SX_DEBUG_SIGNALS, "CD just changed... ");
860 msvr_cd = sx_in(bp, CD186x_MSVR) & MSVR_CD;
862 dprintk (SX_DEBUG_SIGNALS, "Waking up guys in open.\n");
863 wake_up_interruptible(&port->open_wait);
865 dprintk (SX_DEBUG_SIGNALS, "Sending HUP.\n");
866 schedule_work(&port->tqueue_hangup);
870 #ifdef SPECIALIX_BRAIN_DAMAGED_CTS
871 if (mcr & MCR_CTSCHG) {
872 if (sx_in(bp, CD186x_MSVR) & MSVR_CTS) {
874 port->IER |= IER_TXRDY;
875 if (port->xmit_cnt <= port->wakeup_chars)
876 sx_mark_event(port, RS_EVENT_WRITE_WAKEUP);
879 port->IER &= ~IER_TXRDY;
881 sx_out(bp, CD186x_IER, port->IER);
883 if (mcr & MCR_DSSXHG) {
884 if (sx_in(bp, CD186x_MSVR) & MSVR_DSR) {
886 port->IER |= IER_TXRDY;
887 if (port->xmit_cnt <= port->wakeup_chars)
888 sx_mark_event(port, RS_EVENT_WRITE_WAKEUP);
891 port->IER &= ~IER_TXRDY;
893 sx_out(bp, CD186x_IER, port->IER);
895 #endif /* SPECIALIX_BRAIN_DAMAGED_CTS */
897 /* Clear change bits */
898 sx_out(bp, CD186x_MCR, 0);
902 /* The main interrupt processing routine */
903 static irqreturn_t sx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
905 unsigned char status;
907 struct specialix_board *bp;
908 unsigned long loop = 0;
915 spin_lock_irqsave(&bp->lock, flags);
917 dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __FUNCTION__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
918 if (!bp || !(bp->flags & SX_BOARD_ACTIVE)) {
919 dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", irq);
920 spin_unlock_irqrestore(&bp->lock, flags);
927 while ((++loop < 16) && (status = (sx_in(bp, CD186x_SRSR) &
931 if (status & SRSR_RREQint) {
932 ack = sx_in(bp, CD186x_RRAR);
934 if (ack == (SX_ID | GIVR_IT_RCV))
936 else if (ack == (SX_ID | GIVR_IT_REXC))
939 printk(KERN_ERR "sx%d: status: 0x%x Bad receive ack 0x%02x.\n",
940 board_No(bp), status, ack);
942 } else if (status & SRSR_TREQint) {
943 ack = sx_in(bp, CD186x_TRAR);
945 if (ack == (SX_ID | GIVR_IT_TX))
948 printk(KERN_ERR "sx%d: status: 0x%x Bad transmit ack 0x%02x. port: %d\n",
949 board_No(bp), status, ack, port_No (sx_get_port (bp, "Int")));
950 } else if (status & SRSR_MREQint) {
951 ack = sx_in(bp, CD186x_MRAR);
953 if (ack == (SX_ID | GIVR_IT_MODEM))
956 printk(KERN_ERR "sx%d: status: 0x%x Bad modem ack 0x%02x.\n",
957 board_No(bp), status, ack);
961 sx_out(bp, CD186x_EOIR, 0); /* Mark end of interrupt */
964 outb (bp->reg, bp->base + SX_ADDR_REG);
965 spin_unlock_irqrestore(&bp->lock, flags);
972 * Routines for open & close processing.
975 static void turn_ints_off (struct specialix_board *bp)
980 if (bp->flags & SX_BOARD_IS_PCI) {
981 /* This was intended for enabeling the interrupt on the
982 * PCI card. However it seems that it's already enabled
983 * and as PCI interrupts can be shared, there is no real
984 * reason to have to turn it off. */
987 spin_lock_irqsave(&bp->lock, flags);
988 (void) sx_in_off (bp, 0); /* Turn off interrupts. */
989 spin_unlock_irqrestore(&bp->lock, flags);
994 static void turn_ints_on (struct specialix_board *bp)
1000 if (bp->flags & SX_BOARD_IS_PCI) {
1001 /* play with the PCI chip. See comment above. */
1003 spin_lock_irqsave(&bp->lock, flags);
1004 (void) sx_in (bp, 0); /* Turn ON interrupts. */
1005 spin_unlock_irqrestore(&bp->lock, flags);
1011 /* Called with disabled interrupts */
1012 static inline int sx_setup_board(struct specialix_board * bp)
1016 if (bp->flags & SX_BOARD_ACTIVE)
1019 if (bp->flags & SX_BOARD_IS_PCI)
1020 error = request_irq(bp->irq, sx_interrupt, SA_INTERRUPT | SA_SHIRQ, "specialix IO8+", bp);
1022 error = request_irq(bp->irq, sx_interrupt, SA_INTERRUPT, "specialix IO8+", bp);
1028 bp->flags |= SX_BOARD_ACTIVE;
1034 /* Called with disabled interrupts */
1035 static inline void sx_shutdown_board(struct specialix_board *bp)
1039 if (!(bp->flags & SX_BOARD_ACTIVE)) {
1044 bp->flags &= ~SX_BOARD_ACTIVE;
1046 dprintk (SX_DEBUG_IRQ, "Freeing IRQ%d for board %d.\n",
1047 bp->irq, board_No (bp));
1048 free_irq(bp->irq, bp);
1058 * Setting up port characteristics.
1059 * Must be called with disabled interrupts
1061 static void sx_change_speed(struct specialix_board *bp, struct specialix_port *port)
1063 struct tty_struct *tty;
1066 unsigned char cor1 = 0, cor3 = 0;
1067 unsigned char mcor1 = 0, mcor2 = 0;
1068 static unsigned long again;
1069 unsigned long flags;
1073 if (!(tty = port->tty) || !tty->termios) {
1080 /* Select port on the board */
1081 spin_lock_irqsave(&bp->lock, flags);
1082 sx_out(bp, CD186x_CAR, port_No(port));
1084 /* The Specialix board doens't implement the RTS lines.
1085 They are used to set the IRQ level. Don't touch them. */
1086 if (SX_CRTSCTS(tty))
1087 port->MSVR = MSVR_DTR | (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
1089 port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
1090 spin_unlock_irqrestore(&bp->lock, flags);
1091 dprintk (SX_DEBUG_TERMIOS, "sx: got MSVR=%02x.\n", port->MSVR);
1094 if (baud & CBAUDEX) {
1096 if (baud < 1 || baud > 2)
1097 port->tty->termios->c_cflag &= ~CBAUDEX;
1102 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1104 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1109 if (!baud_table[baud]) {
1110 /* Drop DTR & exit */
1111 dprintk (SX_DEBUG_TERMIOS, "Dropping DTR... Hmm....\n");
1112 if (!SX_CRTSCTS (tty)) {
1113 port -> MSVR &= ~ MSVR_DTR;
1114 spin_lock_irqsave(&bp->lock, flags);
1115 sx_out(bp, CD186x_MSVR, port->MSVR );
1116 spin_unlock_irqrestore(&bp->lock, flags);
1119 dprintk (SX_DEBUG_TERMIOS, "Can't drop DTR: no DTR.\n");
1123 if (!SX_CRTSCTS (tty)) {
1124 port ->MSVR |= MSVR_DTR;
1129 * Now we must calculate some speed depended things
1132 /* Set baud rate for port */
1133 tmp = port->custom_divisor ;
1135 printk (KERN_INFO "sx%d: Using custom baud rate divisor %ld. \n"
1136 "This is an untested option, please be carefull.\n",
1137 port_No (port), tmp);
1139 tmp = (((SX_OSCFREQ + baud_table[baud]/2) / baud_table[baud] +
1140 CD186x_TPC/2) / CD186x_TPC);
1142 if ((tmp < 0x10) && time_before(again, jiffies)) {
1143 again = jiffies + HZ * 60;
1144 /* Page 48 of version 2.0 of the CL-CD1865 databook */
1146 printk (KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
1147 "Performance degradation is possible.\n"
1148 "Read specialix.txt for more info.\n",
1149 port_No (port), tmp);
1151 printk (KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
1152 "Warning: overstressing Cirrus chip. "
1153 "This might not work.\n"
1154 "Read specialix.txt for more info.\n",
1155 port_No (port), tmp);
1158 spin_lock_irqsave(&bp->lock, flags);
1159 sx_out(bp, CD186x_RBPRH, (tmp >> 8) & 0xff);
1160 sx_out(bp, CD186x_TBPRH, (tmp >> 8) & 0xff);
1161 sx_out(bp, CD186x_RBPRL, tmp & 0xff);
1162 sx_out(bp, CD186x_TBPRL, tmp & 0xff);
1163 spin_unlock_irqrestore(&bp->lock, flags);
1164 if (port->custom_divisor) {
1165 baud = (SX_OSCFREQ + port->custom_divisor/2) / port->custom_divisor;
1166 baud = ( baud + 5 ) / 10;
1168 baud = (baud_table[baud] + 5) / 10; /* Estimated CPS */
1170 /* Two timer ticks seems enough to wakeup something like SLIP driver */
1171 tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO;
1172 port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ?
1173 SERIAL_XMIT_SIZE - 1 : tmp);
1175 /* Receiver timeout will be transmission time for 1.5 chars */
1176 tmp = (SPECIALIX_TPS + SPECIALIX_TPS/2 + baud/2) / baud;
1177 tmp = (tmp > 0xff) ? 0xff : tmp;
1178 spin_lock_irqsave(&bp->lock, flags);
1179 sx_out(bp, CD186x_RTPR, tmp);
1180 spin_unlock_irqrestore(&bp->lock, flags);
1181 switch (C_CSIZE(tty)) {
1199 cor1 |= COR1_IGNORE;
1200 if (C_PARENB(tty)) {
1201 cor1 |= COR1_NORMPAR;
1205 cor1 &= ~COR1_IGNORE;
1207 /* Set marking of some errors */
1208 port->mark_mask = RCSR_OE | RCSR_TOUT;
1210 port->mark_mask |= RCSR_FE | RCSR_PE;
1211 if (I_BRKINT(tty) || I_PARMRK(tty))
1212 port->mark_mask |= RCSR_BREAK;
1214 port->mark_mask &= ~(RCSR_FE | RCSR_PE);
1215 if (I_IGNBRK(tty)) {
1216 port->mark_mask &= ~RCSR_BREAK;
1218 /* Real raw mode. Ignore all */
1219 port->mark_mask &= ~RCSR_OE;
1221 /* Enable Hardware Flow Control */
1222 if (C_CRTSCTS(tty)) {
1223 #ifdef SPECIALIX_BRAIN_DAMAGED_CTS
1224 port->IER |= IER_DSR | IER_CTS;
1225 mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD;
1226 mcor2 |= MCOR2_DSROD | MCOR2_CTSOD;
1227 spin_lock_irqsave(&bp->lock, flags);
1228 tty->hw_stopped = !(sx_in(bp, CD186x_MSVR) & (MSVR_CTS|MSVR_DSR));
1229 spin_unlock_irqrestore(&bp->lock, flags);
1231 port->COR2 |= COR2_CTSAE;
1234 /* Enable Software Flow Control. FIXME: I'm not sure about this */
1235 /* Some people reported that it works, but I still doubt it */
1237 port->COR2 |= COR2_TXIBE;
1238 cor3 |= (COR3_FCT | COR3_SCDE);
1240 port->COR2 |= COR2_IXM;
1241 spin_lock_irqsave(&bp->lock, flags);
1242 sx_out(bp, CD186x_SCHR1, START_CHAR(tty));
1243 sx_out(bp, CD186x_SCHR2, STOP_CHAR(tty));
1244 sx_out(bp, CD186x_SCHR3, START_CHAR(tty));
1245 sx_out(bp, CD186x_SCHR4, STOP_CHAR(tty));
1246 spin_unlock_irqrestore(&bp->lock, flags);
1248 if (!C_CLOCAL(tty)) {
1249 /* Enable CD check */
1250 port->IER |= IER_CD;
1251 mcor1 |= MCOR1_CDZD;
1252 mcor2 |= MCOR2_CDOD;
1256 /* Enable receiver */
1257 port->IER |= IER_RXD;
1259 /* Set input FIFO size (1-8 bytes) */
1261 /* Setting up CD186x channel registers */
1262 spin_lock_irqsave(&bp->lock, flags);
1263 sx_out(bp, CD186x_COR1, cor1);
1264 sx_out(bp, CD186x_COR2, port->COR2);
1265 sx_out(bp, CD186x_COR3, cor3);
1266 spin_unlock_irqrestore(&bp->lock, flags);
1267 /* Make CD186x know about registers change */
1269 spin_lock_irqsave(&bp->lock, flags);
1270 sx_out(bp, CD186x_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
1271 /* Setting up modem option registers */
1272 dprintk (SX_DEBUG_TERMIOS, "Mcor1 = %02x, mcor2 = %02x.\n", mcor1, mcor2);
1273 sx_out(bp, CD186x_MCOR1, mcor1);
1274 sx_out(bp, CD186x_MCOR2, mcor2);
1275 spin_unlock_irqrestore(&bp->lock, flags);
1276 /* Enable CD186x transmitter & receiver */
1278 spin_lock_irqsave(&bp->lock, flags);
1279 sx_out(bp, CD186x_CCR, CCR_TXEN | CCR_RXEN);
1280 /* Enable interrupts */
1281 sx_out(bp, CD186x_IER, port->IER);
1282 /* And finally set the modem lines... */
1283 sx_out(bp, CD186x_MSVR, port->MSVR);
1284 spin_unlock_irqrestore(&bp->lock, flags);
1290 /* Must be called with interrupts enabled */
1291 static int sx_setup_port(struct specialix_board *bp, struct specialix_port *port)
1293 unsigned long flags;
1297 if (port->flags & ASYNC_INITIALIZED) {
1302 if (!port->xmit_buf) {
1303 /* We may sleep in get_zeroed_page() */
1306 if (!(tmp = get_zeroed_page(GFP_KERNEL))) {
1311 if (port->xmit_buf) {
1314 return -ERESTARTSYS;
1316 port->xmit_buf = (unsigned char *) tmp;
1319 spin_lock_irqsave(&port->lock, flags);
1322 clear_bit(TTY_IO_ERROR, &port->tty->flags);
1324 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1325 sx_change_speed(bp, port);
1326 port->flags |= ASYNC_INITIALIZED;
1328 spin_unlock_irqrestore(&port->lock, flags);
1336 /* Must be called with interrupts disabled */
1337 static void sx_shutdown_port(struct specialix_board *bp, struct specialix_port *port)
1339 struct tty_struct *tty;
1341 unsigned long flags;
1345 if (!(port->flags & ASYNC_INITIALIZED)) {
1350 if (sx_debug & SX_DEBUG_FIFO) {
1351 dprintk(SX_DEBUG_FIFO, "sx%d: port %d: %ld overruns, FIFO hits [ ",
1352 board_No(bp), port_No(port), port->overrun);
1353 for (i = 0; i < 10; i++) {
1354 dprintk(SX_DEBUG_FIFO, "%ld ", port->hits[i]);
1356 dprintk(SX_DEBUG_FIFO, "].\n");
1359 if (port->xmit_buf) {
1360 free_page((unsigned long) port->xmit_buf);
1361 port->xmit_buf = NULL;
1365 spin_lock_irqsave(&bp->lock, flags);
1366 sx_out(bp, CD186x_CAR, port_No(port));
1368 if (!(tty = port->tty) || C_HUPCL(tty)) {
1370 sx_out(bp, CD186x_MSVDTR, 0);
1372 spin_unlock_irqrestore(&bp->lock, flags);
1375 spin_lock_irqsave(&bp->lock, flags);
1376 sx_out(bp, CD186x_CCR, CCR_SOFTRESET);
1377 /* Disable all interrupts from this port */
1379 sx_out(bp, CD186x_IER, port->IER);
1380 spin_unlock_irqrestore(&bp->lock, flags);
1382 set_bit(TTY_IO_ERROR, &tty->flags);
1383 port->flags &= ~ASYNC_INITIALIZED;
1386 sx_shutdown_board(bp);
1391 static int block_til_ready(struct tty_struct *tty, struct file * filp,
1392 struct specialix_port *port)
1394 DECLARE_WAITQUEUE(wait, current);
1395 struct specialix_board *bp = port_Board(port);
1399 unsigned long flags;
1404 * If the device is in the middle of being closed, then block
1405 * until it's done, and then try again.
1407 if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
1408 interruptible_sleep_on(&port->close_wait);
1409 if (port->flags & ASYNC_HUP_NOTIFY) {
1414 return -ERESTARTSYS;
1419 * If non-blocking mode is set, or the port is not enabled,
1420 * then make the check up front and then exit.
1422 if ((filp->f_flags & O_NONBLOCK) ||
1423 (tty->flags & (1 << TTY_IO_ERROR))) {
1424 port->flags |= ASYNC_NORMAL_ACTIVE;
1433 * Block waiting for the carrier detect and the line to become
1434 * free (i.e., not in use by the callout). While we are in
1435 * this loop, info->count is dropped by one, so that
1436 * rs_close() knows when to free things. We restore it upon
1437 * exit, either normal or abnormal.
1440 add_wait_queue(&port->open_wait, &wait);
1441 spin_lock_irqsave(&port->lock, flags);
1442 if (!tty_hung_up_p(filp)) {
1445 spin_unlock_irqrestore(&port->lock, flags);
1446 port->blocked_open++;
1448 spin_lock_irqsave(&bp->lock, flags);
1449 sx_out(bp, CD186x_CAR, port_No(port));
1450 CD = sx_in(bp, CD186x_MSVR) & MSVR_CD;
1451 if (SX_CRTSCTS (tty)) {
1453 port->MSVR |= MSVR_DTR; /* WTF? */
1454 sx_out (bp, CD186x_MSVR, port->MSVR);
1457 port->MSVR |= MSVR_DTR;
1458 sx_out (bp, CD186x_MSVR, port->MSVR);
1460 spin_unlock_irqrestore(&bp->lock, flags);
1461 set_current_state(TASK_INTERRUPTIBLE);
1462 if (tty_hung_up_p(filp) ||
1463 !(port->flags & ASYNC_INITIALIZED)) {
1464 if (port->flags & ASYNC_HUP_NOTIFY)
1467 retval = -ERESTARTSYS;
1470 if (!(port->flags & ASYNC_CLOSING) &&
1473 if (signal_pending(current)) {
1474 retval = -ERESTARTSYS;
1480 set_current_state(TASK_RUNNING);
1481 remove_wait_queue(&port->open_wait, &wait);
1482 spin_lock_irqsave(&port->lock, flags);
1483 if (!tty_hung_up_p(filp)) {
1486 port->blocked_open--;
1487 spin_unlock_irqrestore(&port->lock, flags);
1493 port->flags |= ASYNC_NORMAL_ACTIVE;
1499 static int sx_open(struct tty_struct * tty, struct file * filp)
1503 struct specialix_port * port;
1504 struct specialix_board * bp;
1506 unsigned long flags;
1510 board = SX_BOARD(tty->index);
1512 if (board >= SX_NBOARD || !(sx_board[board].flags & SX_BOARD_PRESENT)) {
1517 bp = &sx_board[board];
1518 port = sx_port + board * SX_NPORT + SX_PORT(tty->index);
1520 for (i = 0; i < 10; i++)
1523 dprintk (SX_DEBUG_OPEN, "Board = %d, bp = %p, port = %p, portno = %d.\n",
1524 board, bp, port, SX_PORT(tty->index));
1526 if (sx_paranoia_check(port, tty->name, "sx_open")) {
1531 if ((error = sx_setup_board(bp))) {
1536 spin_lock_irqsave(&bp->lock, flags);
1539 tty->driver_data = port;
1541 spin_unlock_irqrestore(&bp->lock, flags);
1543 if ((error = sx_setup_port(bp, port))) {
1548 if ((error = block_til_ready(tty, filp, port))) {
1558 static void sx_close(struct tty_struct * tty, struct file * filp)
1560 struct specialix_port *port = (struct specialix_port *) tty->driver_data;
1561 struct specialix_board *bp;
1562 unsigned long flags;
1563 unsigned long timeout;
1566 if (!port || sx_paranoia_check(port, tty->name, "close")) {
1570 spin_lock_irqsave(&port->lock, flags);
1572 if (tty_hung_up_p(filp)) {
1573 spin_unlock_irqrestore(&port->lock, flags);
1578 bp = port_Board(port);
1579 if ((tty->count == 1) && (port->count != 1)) {
1580 printk(KERN_ERR "sx%d: sx_close: bad port count;"
1581 " tty->count is 1, port count is %d\n",
1582 board_No(bp), port->count);
1586 if (port->count > 1) {
1590 spin_unlock_irqrestore(&port->lock, flags);
1595 port->flags |= ASYNC_CLOSING;
1597 * Now we wait for the transmit buffer to clear; and we notify
1598 * the line discipline to only process XON/XOFF characters.
1601 spin_unlock_irqrestore(&port->lock, flags);
1602 dprintk (SX_DEBUG_OPEN, "Closing\n");
1603 if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) {
1604 tty_wait_until_sent(tty, port->closing_wait);
1607 * At this point we stop accepting input. To do this, we
1608 * disable the receive line status interrupts, and tell the
1609 * interrupt driver to stop checking the data ready bit in the
1610 * line status register.
1612 dprintk (SX_DEBUG_OPEN, "Closed\n");
1613 port->IER &= ~IER_RXD;
1614 if (port->flags & ASYNC_INITIALIZED) {
1615 port->IER &= ~IER_TXRDY;
1616 port->IER |= IER_TXEMPTY;
1617 spin_lock_irqsave(&bp->lock, flags);
1618 sx_out(bp, CD186x_CAR, port_No(port));
1619 sx_out(bp, CD186x_IER, port->IER);
1620 spin_unlock_irqrestore(&bp->lock, flags);
1622 * Before we drop DTR, make sure the UART transmitter
1623 * has completely drained; this is especially
1624 * important if there is a transmit FIFO!
1626 timeout = jiffies+HZ;
1627 while(port->IER & IER_TXEMPTY) {
1628 set_current_state (TASK_INTERRUPTIBLE);
1629 msleep_interruptible(jiffies_to_msecs(port->timeout));
1630 if (time_after(jiffies, timeout)) {
1631 printk (KERN_INFO "Timeout waiting for close\n");
1638 if (--bp->count < 0) {
1639 printk(KERN_ERR "sx%d: sx_shutdown_port: bad board count: %d port: %d\n",
1640 board_No(bp), bp->count, tty->index);
1643 if (--port->count < 0) {
1644 printk(KERN_ERR "sx%d: sx_close: bad port count for tty%d: %d\n",
1645 board_No(bp), port_No(port), port->count);
1649 sx_shutdown_port(bp, port);
1650 if (tty->driver->flush_buffer)
1651 tty->driver->flush_buffer(tty);
1652 tty_ldisc_flush(tty);
1653 spin_lock_irqsave(&port->lock, flags);
1657 spin_unlock_irqrestore(&port->lock, flags);
1658 if (port->blocked_open) {
1659 if (port->close_delay) {
1660 msleep_interruptible(jiffies_to_msecs(port->close_delay));
1662 wake_up_interruptible(&port->open_wait);
1664 port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1665 wake_up_interruptible(&port->close_wait);
1671 static int sx_write(struct tty_struct * tty,
1672 const unsigned char *buf, int count)
1674 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1675 struct specialix_board *bp;
1677 unsigned long flags;
1680 if (sx_paranoia_check(port, tty->name, "sx_write")) {
1685 bp = port_Board(port);
1687 if (!tty || !port->xmit_buf || !tmp_buf) {
1693 spin_lock_irqsave(&port->lock, flags);
1694 c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
1695 SERIAL_XMIT_SIZE - port->xmit_head));
1697 spin_unlock_irqrestore(&port->lock, flags);
1700 memcpy(port->xmit_buf + port->xmit_head, buf, c);
1701 port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
1702 port->xmit_cnt += c;
1703 spin_unlock_irqrestore(&port->lock, flags);
1710 spin_lock_irqsave(&bp->lock, flags);
1711 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
1712 !(port->IER & IER_TXRDY)) {
1713 port->IER |= IER_TXRDY;
1714 sx_out(bp, CD186x_CAR, port_No(port));
1715 sx_out(bp, CD186x_IER, port->IER);
1717 spin_unlock_irqrestore(&bp->lock, flags);
1724 static void sx_put_char(struct tty_struct * tty, unsigned char ch)
1726 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1727 unsigned long flags;
1728 struct specialix_board * bp;
1732 if (sx_paranoia_check(port, tty->name, "sx_put_char")) {
1736 dprintk (SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf);
1737 if (!tty || !port->xmit_buf) {
1741 bp = port_Board(port);
1742 spin_lock_irqsave(&port->lock, flags);
1744 dprintk (SX_DEBUG_TX, "xmit_cnt: %d xmit_buf: %p\n", port->xmit_cnt, port->xmit_buf);
1745 if ((port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) || (!port->xmit_buf)) {
1746 spin_unlock_irqrestore(&port->lock, flags);
1747 dprintk (SX_DEBUG_TX, "Exit size\n");
1751 dprintk (SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf);
1752 port->xmit_buf[port->xmit_head++] = ch;
1753 port->xmit_head &= SERIAL_XMIT_SIZE - 1;
1755 spin_unlock_irqrestore(&port->lock, flags);
1761 static void sx_flush_chars(struct tty_struct * tty)
1763 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1764 unsigned long flags;
1765 struct specialix_board * bp = port_Board(port);
1769 if (sx_paranoia_check(port, tty->name, "sx_flush_chars")) {
1773 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1778 spin_lock_irqsave(&bp->lock, flags);
1779 port->IER |= IER_TXRDY;
1780 sx_out(port_Board(port), CD186x_CAR, port_No(port));
1781 sx_out(port_Board(port), CD186x_IER, port->IER);
1782 spin_unlock_irqrestore(&bp->lock, flags);
1788 static int sx_write_room(struct tty_struct * tty)
1790 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1795 if (sx_paranoia_check(port, tty->name, "sx_write_room")) {
1800 ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1809 static int sx_chars_in_buffer(struct tty_struct *tty)
1811 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1815 if (sx_paranoia_check(port, tty->name, "sx_chars_in_buffer")) {
1820 return port->xmit_cnt;
1824 static void sx_flush_buffer(struct tty_struct *tty)
1826 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1827 unsigned long flags;
1828 struct specialix_board * bp;
1832 if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) {
1837 bp = port_Board(port);
1838 spin_lock_irqsave(&port->lock, flags);
1839 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1840 spin_unlock_irqrestore(&port->lock, flags);
1847 static int sx_tiocmget(struct tty_struct *tty, struct file *file)
1849 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1850 struct specialix_board * bp;
1851 unsigned char status;
1852 unsigned int result;
1853 unsigned long flags;
1857 if (sx_paranoia_check(port, tty->name, __FUNCTION__)) {
1862 bp = port_Board(port);
1863 spin_lock_irqsave (&bp->lock, flags);
1864 sx_out(bp, CD186x_CAR, port_No(port));
1865 status = sx_in(bp, CD186x_MSVR);
1866 spin_unlock_irqrestore(&bp->lock, flags);
1867 dprintk (SX_DEBUG_INIT, "Got msvr[%d] = %02x, car = %d.\n",
1868 port_No(port), status, sx_in (bp, CD186x_CAR));
1869 dprintk (SX_DEBUG_INIT, "sx_port = %p, port = %p\n", sx_port, port);
1870 if (SX_CRTSCTS(port->tty)) {
1871 result = /* (status & MSVR_RTS) ? */ TIOCM_DTR /* : 0) */
1872 | ((status & MSVR_DTR) ? TIOCM_RTS : 0)
1873 | ((status & MSVR_CD) ? TIOCM_CAR : 0)
1874 |/* ((status & MSVR_DSR) ? */ TIOCM_DSR /* : 0) */
1875 | ((status & MSVR_CTS) ? TIOCM_CTS : 0);
1877 result = /* (status & MSVR_RTS) ? */ TIOCM_RTS /* : 0) */
1878 | ((status & MSVR_DTR) ? TIOCM_DTR : 0)
1879 | ((status & MSVR_CD) ? TIOCM_CAR : 0)
1880 |/* ((status & MSVR_DSR) ? */ TIOCM_DSR /* : 0) */
1881 | ((status & MSVR_CTS) ? TIOCM_CTS : 0);
1890 static int sx_tiocmset(struct tty_struct *tty, struct file *file,
1891 unsigned int set, unsigned int clear)
1893 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
1894 unsigned long flags;
1895 struct specialix_board *bp;
1899 if (sx_paranoia_check(port, tty->name, __FUNCTION__)) {
1904 bp = port_Board(port);
1906 spin_lock_irqsave(&port->lock, flags);
1907 /* if (set & TIOCM_RTS)
1908 port->MSVR |= MSVR_RTS; */
1909 /* if (set & TIOCM_DTR)
1910 port->MSVR |= MSVR_DTR; */
1912 if (SX_CRTSCTS(port->tty)) {
1913 if (set & TIOCM_RTS)
1914 port->MSVR |= MSVR_DTR;
1916 if (set & TIOCM_DTR)
1917 port->MSVR |= MSVR_DTR;
1920 /* if (clear & TIOCM_RTS)
1921 port->MSVR &= ~MSVR_RTS; */
1922 /* if (clear & TIOCM_DTR)
1923 port->MSVR &= ~MSVR_DTR; */
1924 if (SX_CRTSCTS(port->tty)) {
1925 if (clear & TIOCM_RTS)
1926 port->MSVR &= ~MSVR_DTR;
1928 if (clear & TIOCM_DTR)
1929 port->MSVR &= ~MSVR_DTR;
1931 spin_lock_irqsave(&bp->lock, flags);
1932 sx_out(bp, CD186x_CAR, port_No(port));
1933 sx_out(bp, CD186x_MSVR, port->MSVR);
1934 spin_unlock_irqrestore(&bp->lock, flags);
1935 spin_unlock_irqrestore(&port->lock, flags);
1941 static inline void sx_send_break(struct specialix_port * port, unsigned long length)
1943 struct specialix_board *bp = port_Board(port);
1944 unsigned long flags;
1948 spin_lock_irqsave (&port->lock, flags);
1949 port->break_length = SPECIALIX_TPS / HZ * length;
1950 port->COR2 |= COR2_ETC;
1951 port->IER |= IER_TXRDY;
1952 spin_lock_irqsave(&bp->lock, flags);
1953 sx_out(bp, CD186x_CAR, port_No(port));
1954 sx_out(bp, CD186x_COR2, port->COR2);
1955 sx_out(bp, CD186x_IER, port->IER);
1956 spin_unlock_irqrestore(&bp->lock, flags);
1957 spin_unlock_irqrestore (&port->lock, flags);
1959 spin_lock_irqsave(&bp->lock, flags);
1960 sx_out(bp, CD186x_CCR, CCR_CORCHG2);
1961 spin_unlock_irqrestore(&bp->lock, flags);
1968 static inline int sx_set_serial_info(struct specialix_port * port,
1969 struct serial_struct __user * newinfo)
1971 struct serial_struct tmp;
1972 struct specialix_board *bp = port_Board(port);
1977 if (!access_ok(VERIFY_READ, (void *) newinfo, sizeof(tmp))) {
1982 if (copy_from_user(&tmp, newinfo, sizeof(tmp))) {
1988 if ((tmp.irq != bp->irq) ||
1989 (tmp.port != bp->base) ||
1990 (tmp.type != PORT_CIRRUS) ||
1991 (tmp.baud_base != (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC) ||
1992 (tmp.custom_divisor != 0) ||
1993 (tmp.xmit_fifo_size != CD186x_NFIFO) ||
1994 (tmp.flags & ~SPECIALIX_LEGAL_FLAGS)) {
2000 change_speed = ((port->flags & ASYNC_SPD_MASK) !=
2001 (tmp.flags & ASYNC_SPD_MASK));
2002 change_speed |= (tmp.custom_divisor != port->custom_divisor);
2004 if (!capable(CAP_SYS_ADMIN)) {
2005 if ((tmp.close_delay != port->close_delay) ||
2006 (tmp.closing_wait != port->closing_wait) ||
2007 ((tmp.flags & ~ASYNC_USR_MASK) !=
2008 (port->flags & ~ASYNC_USR_MASK))) {
2012 port->flags = ((port->flags & ~ASYNC_USR_MASK) |
2013 (tmp.flags & ASYNC_USR_MASK));
2014 port->custom_divisor = tmp.custom_divisor;
2016 port->flags = ((port->flags & ~ASYNC_FLAGS) |
2017 (tmp.flags & ASYNC_FLAGS));
2018 port->close_delay = tmp.close_delay;
2019 port->closing_wait = tmp.closing_wait;
2020 port->custom_divisor = tmp.custom_divisor;
2023 sx_change_speed(bp, port);
2030 static inline int sx_get_serial_info(struct specialix_port * port,
2031 struct serial_struct __user *retinfo)
2033 struct serial_struct tmp;
2034 struct specialix_board *bp = port_Board(port);
2039 if (!access_ok(VERIFY_WRITE, (void *) retinfo, sizeof(tmp)))
2043 memset(&tmp, 0, sizeof(tmp));
2044 tmp.type = PORT_CIRRUS;
2045 tmp.line = port - sx_port;
2046 tmp.port = bp->base;
2048 tmp.flags = port->flags;
2049 tmp.baud_base = (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC;
2050 tmp.close_delay = port->close_delay * HZ/100;
2051 tmp.closing_wait = port->closing_wait * HZ/100;
2052 tmp.custom_divisor = port->custom_divisor;
2053 tmp.xmit_fifo_size = CD186x_NFIFO;
2054 if (copy_to_user(retinfo, &tmp, sizeof(tmp))) {
2064 static int sx_ioctl(struct tty_struct * tty, struct file * filp,
2065 unsigned int cmd, unsigned long arg)
2067 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2069 void __user *argp = (void __user *)arg;
2073 if (sx_paranoia_check(port, tty->name, "sx_ioctl")) {
2079 case TCSBRK: /* SVID version: non-zero arg --> no break */
2080 retval = tty_check_change(tty);
2085 tty_wait_until_sent(tty, 0);
2087 sx_send_break(port, HZ/4); /* 1/4 second */
2089 case TCSBRKP: /* support for POSIX tcsendbreak() */
2090 retval = tty_check_change(tty);
2095 tty_wait_until_sent(tty, 0);
2096 sx_send_break(port, arg ? arg*(HZ/10) : HZ/4);
2100 if (put_user(C_CLOCAL(tty)?1:0, (unsigned long __user *)argp)) {
2107 if (get_user(arg, (unsigned long __user *) argp)) {
2111 tty->termios->c_cflag =
2112 ((tty->termios->c_cflag & ~CLOCAL) |
2113 (arg ? CLOCAL : 0));
2118 return sx_get_serial_info(port, argp);
2121 return sx_set_serial_info(port, argp);
2124 return -ENOIOCTLCMD;
2131 static void sx_throttle(struct tty_struct * tty)
2133 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2134 struct specialix_board *bp;
2135 unsigned long flags;
2139 if (sx_paranoia_check(port, tty->name, "sx_throttle")) {
2144 bp = port_Board(port);
2146 /* Use DTR instead of RTS ! */
2147 if (SX_CRTSCTS (tty))
2148 port->MSVR &= ~MSVR_DTR;
2150 /* Auch!!! I think the system shouldn't call this then. */
2151 /* Or maybe we're supposed (allowed?) to do our side of hw
2152 handshake anyway, even when hardware handshake is off.
2153 When you see this in your logs, please report.... */
2154 printk (KERN_ERR "sx%d: Need to throttle, but can't (hardware hs is off)\n",
2157 spin_lock_irqsave(&bp->lock, flags);
2158 sx_out(bp, CD186x_CAR, port_No(port));
2159 spin_unlock_irqrestore(&bp->lock, flags);
2161 spin_unlock_irqrestore(&bp->lock, flags);
2163 spin_lock_irqsave(&bp->lock, flags);
2164 sx_out(bp, CD186x_CCR, CCR_SSCH2);
2165 spin_unlock_irqrestore(&bp->lock, flags);
2168 spin_lock_irqsave(&bp->lock, flags);
2169 sx_out(bp, CD186x_MSVR, port->MSVR);
2170 spin_unlock_irqrestore(&bp->lock, flags);
2176 static void sx_unthrottle(struct tty_struct * tty)
2178 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2179 struct specialix_board *bp;
2180 unsigned long flags;
2184 if (sx_paranoia_check(port, tty->name, "sx_unthrottle")) {
2189 bp = port_Board(port);
2191 spin_lock_irqsave(&port->lock, flags);
2192 /* XXXX Use DTR INSTEAD???? */
2193 if (SX_CRTSCTS(tty)) {
2194 port->MSVR |= MSVR_DTR;
2195 } /* Else clause: see remark in "sx_throttle"... */
2196 spin_lock_irqsave(&bp->lock, flags);
2197 sx_out(bp, CD186x_CAR, port_No(port));
2198 spin_unlock_irqrestore(&bp->lock, flags);
2200 spin_unlock_irqrestore(&port->lock, flags);
2202 spin_lock_irqsave(&bp->lock, flags);
2203 sx_out(bp, CD186x_CCR, CCR_SSCH1);
2204 spin_unlock_irqrestore(&bp->lock, flags);
2206 spin_lock_irqsave(&port->lock, flags);
2208 spin_lock_irqsave(&bp->lock, flags);
2209 sx_out(bp, CD186x_MSVR, port->MSVR);
2210 spin_unlock_irqrestore(&bp->lock, flags);
2211 spin_unlock_irqrestore(&port->lock, flags);
2217 static void sx_stop(struct tty_struct * tty)
2219 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2220 struct specialix_board *bp;
2221 unsigned long flags;
2225 if (sx_paranoia_check(port, tty->name, "sx_stop")) {
2230 bp = port_Board(port);
2232 spin_lock_irqsave(&port->lock, flags);
2233 port->IER &= ~IER_TXRDY;
2234 spin_lock_irqsave(&bp->lock, flags);
2235 sx_out(bp, CD186x_CAR, port_No(port));
2236 sx_out(bp, CD186x_IER, port->IER);
2237 spin_unlock_irqrestore(&bp->lock, flags);
2238 spin_unlock_irqrestore(&port->lock, flags);
2244 static void sx_start(struct tty_struct * tty)
2246 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2247 struct specialix_board *bp;
2248 unsigned long flags;
2252 if (sx_paranoia_check(port, tty->name, "sx_start")) {
2257 bp = port_Board(port);
2259 spin_lock_irqsave(&port->lock, flags);
2260 if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) {
2261 port->IER |= IER_TXRDY;
2262 spin_lock_irqsave(&bp->lock, flags);
2263 sx_out(bp, CD186x_CAR, port_No(port));
2264 sx_out(bp, CD186x_IER, port->IER);
2265 spin_unlock_irqrestore(&bp->lock, flags);
2267 spin_unlock_irqrestore(&port->lock, flags);
2274 * This routine is called from the work-queue when the interrupt
2275 * routine has signalled that a hangup has occurred. The path of
2276 * hangup processing is:
2278 * serial interrupt routine -> (workqueue) ->
2279 * do_sx_hangup() -> tty->hangup() -> sx_hangup()
2282 static void do_sx_hangup(void *private_)
2284 struct specialix_port *port = (struct specialix_port *) private_;
2285 struct tty_struct *tty;
2291 tty_hangup(tty); /* FIXME: module removal race here */
2297 static void sx_hangup(struct tty_struct * tty)
2299 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2300 struct specialix_board *bp;
2301 unsigned long flags;
2305 if (sx_paranoia_check(port, tty->name, "sx_hangup")) {
2310 bp = port_Board(port);
2312 sx_shutdown_port(bp, port);
2313 spin_lock_irqsave(&port->lock, flags);
2315 bp->count -= port->count;
2316 if (bp->count < 0) {
2317 printk(KERN_ERR "sx%d: sx_hangup: bad board count: %d port: %d\n",
2318 board_No(bp), bp->count, tty->index);
2322 port->flags &= ~ASYNC_NORMAL_ACTIVE;
2324 spin_unlock_irqrestore(&port->lock, flags);
2325 wake_up_interruptible(&port->open_wait);
2331 static void sx_set_termios(struct tty_struct * tty, struct termios * old_termios)
2333 struct specialix_port *port = (struct specialix_port *)tty->driver_data;
2334 unsigned long flags;
2335 struct specialix_board * bp;
2337 if (sx_paranoia_check(port, tty->name, "sx_set_termios"))
2340 if (tty->termios->c_cflag == old_termios->c_cflag &&
2341 tty->termios->c_iflag == old_termios->c_iflag)
2344 bp = port_Board(port);
2345 spin_lock_irqsave(&port->lock, flags);
2346 sx_change_speed(port_Board(port), port);
2347 spin_unlock_irqrestore(&port->lock, flags);
2349 if ((old_termios->c_cflag & CRTSCTS) &&
2350 !(tty->termios->c_cflag & CRTSCTS)) {
2351 tty->hw_stopped = 0;
2357 static void do_softint(void *private_)
2359 struct specialix_port *port = (struct specialix_port *) private_;
2360 struct tty_struct *tty;
2364 if(!(tty = port->tty)) {
2369 if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) {
2371 //wake_up_interruptible(&tty->write_wait);
2377 static struct tty_operations sx_ops = {
2381 .put_char = sx_put_char,
2382 .flush_chars = sx_flush_chars,
2383 .write_room = sx_write_room,
2384 .chars_in_buffer = sx_chars_in_buffer,
2385 .flush_buffer = sx_flush_buffer,
2387 .throttle = sx_throttle,
2388 .unthrottle = sx_unthrottle,
2389 .set_termios = sx_set_termios,
2392 .hangup = sx_hangup,
2393 .tiocmget = sx_tiocmget,
2394 .tiocmset = sx_tiocmset,
2397 static int sx_init_drivers(void)
2404 specialix_driver = alloc_tty_driver(SX_NBOARD * SX_NPORT);
2405 if (!specialix_driver) {
2406 printk(KERN_ERR "sx: Couldn't allocate tty_driver.\n");
2411 if (!(tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL))) {
2412 printk(KERN_ERR "sx: Couldn't get free page.\n");
2413 put_tty_driver(specialix_driver);
2417 specialix_driver->owner = THIS_MODULE;
2418 specialix_driver->name = "ttyW";
2419 specialix_driver->major = SPECIALIX_NORMAL_MAJOR;
2420 specialix_driver->type = TTY_DRIVER_TYPE_SERIAL;
2421 specialix_driver->subtype = SERIAL_TYPE_NORMAL;
2422 specialix_driver->init_termios = tty_std_termios;
2423 specialix_driver->init_termios.c_cflag =
2424 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2425 specialix_driver->flags = TTY_DRIVER_REAL_RAW;
2426 tty_set_operations(specialix_driver, &sx_ops);
2428 if ((error = tty_register_driver(specialix_driver))) {
2429 put_tty_driver(specialix_driver);
2430 free_page((unsigned long)tmp_buf);
2431 printk(KERN_ERR "sx: Couldn't register specialix IO8+ driver, error = %d\n",
2436 memset(sx_port, 0, sizeof(sx_port));
2437 for (i = 0; i < SX_NPORT * SX_NBOARD; i++) {
2438 sx_port[i].magic = SPECIALIX_MAGIC;
2439 INIT_WORK(&sx_port[i].tqueue, do_softint, &sx_port[i]);
2440 INIT_WORK(&sx_port[i].tqueue_hangup, do_sx_hangup, &sx_port[i]);
2441 sx_port[i].close_delay = 50 * HZ/100;
2442 sx_port[i].closing_wait = 3000 * HZ/100;
2443 init_waitqueue_head(&sx_port[i].open_wait);
2444 init_waitqueue_head(&sx_port[i].close_wait);
2445 spin_lock_init(&sx_port[i].lock);
2452 static void sx_release_drivers(void)
2456 free_page((unsigned long)tmp_buf);
2457 tty_unregister_driver(specialix_driver);
2458 put_tty_driver(specialix_driver);
2463 * This routine must be called by kernel at boot time
2465 static int __init specialix_init(void)
2472 printk(KERN_INFO "sx: Specialix IO8+ driver v" VERSION ", (c) R.E.Wolff 1997/1998.\n");
2473 printk(KERN_INFO "sx: derived from work (c) D.Gorodchanin 1994-1996.\n");
2474 #ifdef CONFIG_SPECIALIX_RTSCTS
2475 printk (KERN_INFO "sx: DTR/RTS pin is always RTS.\n");
2477 printk (KERN_INFO "sx: DTR/RTS pin is RTS when CRTSCTS is on.\n");
2480 for (i = 0; i < SX_NBOARD; i++)
2481 sx_board[i].lock = SPIN_LOCK_UNLOCKED;
2483 if (sx_init_drivers()) {
2488 for (i = 0; i < SX_NBOARD; i++)
2489 if (sx_board[i].base && !sx_probe(&sx_board[i]))
2494 struct pci_dev *pdev = NULL;
2497 while (i < SX_NBOARD) {
2498 if (sx_board[i].flags & SX_BOARD_PRESENT) {
2502 pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX,
2503 PCI_DEVICE_ID_SPECIALIX_IO8,
2507 if (pci_enable_device(pdev))
2510 sx_board[i].irq = pdev->irq;
2512 sx_board[i].base = pci_resource_start (pdev, 2);
2514 sx_board[i].flags |= SX_BOARD_IS_PCI;
2515 if (!sx_probe(&sx_board[i]))
2522 sx_release_drivers();
2523 printk(KERN_INFO "sx: No specialix IO8+ boards detected.\n");
2532 static int iobase[SX_NBOARD] = {0,};
2534 static int irq [SX_NBOARD] = {0,};
2536 module_param_array(iobase, int, NULL, 0);
2537 module_param_array(irq, int, NULL, 0);
2538 module_param(sx_debug, int, 0);
2539 module_param(sx_rxfifo, int, 0);
2540 #ifdef SPECIALIX_TIMER
2541 module_param(sx_poll, int, 0);
2545 * You can setup up to 4 boards.
2546 * by specifying "iobase=0xXXX,0xXXX ..." as insmod parameter.
2547 * You should specify the IRQs too in that case "irq=....,...".
2549 * More than 4 boards in one computer is not possible, as the card can
2550 * only use 4 different interrupts.
2553 static int __init specialix_init_module(void)
2559 init_MUTEX(&tmp_buf_sem); /* Init de the semaphore - pvdl */
2561 if (iobase[0] || iobase[1] || iobase[2] || iobase[3]) {
2562 for(i = 0; i < SX_NBOARD; i++) {
2563 sx_board[i].base = iobase[i];
2564 sx_board[i].irq = irq[i];
2565 sx_board[i].count= 0;
2571 return specialix_init();
2574 static void __exit specialix_exit_module(void)
2580 sx_release_drivers();
2581 for (i = 0; i < SX_NBOARD; i++)
2582 if (sx_board[i].flags & SX_BOARD_PRESENT)
2583 sx_release_io_range(&sx_board[i]);
2584 #ifdef SPECIALIX_TIMER
2585 del_timer (&missed_irq_timer);
2591 module_init(specialix_init_module);
2592 module_exit(specialix_exit_module);
2594 MODULE_LICENSE("GPL");