3 * (c) 1999 by Computone Corporation
5 ********************************************************************************
7 * PACKAGE: Linux tty Device Driver for IntelliPort family of multiport
8 * serial I/O controllers.
10 * DESCRIPTION: Mainline code for the device driver
12 *******************************************************************************/
15 // Fix the immediate DSS_NOW problem.
16 // Work over the channel stats return logic in ip2_ipl_ioctl so they
17 // make sense for all 256 possible channels and so the user space
18 // utilities will compile and work properly.
22 // 1.2.14 /\/\|=mhw=|\/\/
23 // Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts.
24 // Changed the definition of ip2trace to be more consistent with kernel style
25 // Thanks to Andreas Dilger <adilger@turbolabs.com> for these updates
27 // 1.2.13 /\/\|=mhw=|\/\/
28 // DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform
29 // to agreed devfs serial device naming convention.
31 // 1.2.12 /\/\|=mhw=|\/\/
32 // Cleaned up some remove queue cut and paste errors
34 // 1.2.11 /\/\|=mhw=|\/\/
35 // Clean up potential NULL pointer dereferences
36 // Clean up devfs registration
37 // Add kernel command line parsing for io and irq
38 // Compile defaults for io and irq are now set in ip2.c not ip2.h!
39 // Reworked poll_only hack for explicit parameter setting
40 // You must now EXPLICITLY set poll_only = 1 or set all irqs to 0
41 // Merged ip2_loadmain and old_ip2_init
42 // Converted all instances of interruptible_sleep_on into queue calls
43 // Most of these had no race conditions but better to clean up now
45 // 1.2.10 /\/\|=mhw=|\/\/
46 // Fixed the bottom half interrupt handler and enabled USE_IQI
47 // to split the interrupt handler into a formal top-half / bottom-half
48 // Fixed timing window on high speed processors that queued messages to
49 // the outbound mail fifo faster than the board could handle.
52 // Four box EX was barfing on >128k kmalloc, made structure smaller by
53 // reducing output buffer size
56 // Device file system support (MHW)
60 // Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
64 // DCD was not reported when CLOCAL was set on call to TIOCMGET
67 // TIOCMGET requests and waits for status return
68 // No DSS interrupts enabled except for DCD when needed
70 // For internal use only
72 //#define IP2DEBUG_INIT
73 //#define IP2DEBUG_OPEN
74 //#define IP2DEBUG_WRITE
75 //#define IP2DEBUG_READ
76 //#define IP2DEBUG_IOCTL
77 //#define IP2DEBUG_IPL
79 //#define IP2DEBUG_TRACE
86 #include <linux/ctype.h>
87 #include <linux/string.h>
88 #include <linux/fcntl.h>
89 #include <linux/errno.h>
90 #include <linux/module.h>
91 #include <linux/signal.h>
92 #include <linux/sched.h>
93 #include <linux/timer.h>
94 #include <linux/interrupt.h>
95 #include <linux/pci.h>
97 #include <linux/slab.h>
98 #include <linux/major.h>
99 #include <linux/wait.h>
100 #include <linux/device.h>
101 #include <linux/smp_lock.h>
103 #include <linux/tty.h>
104 #include <linux/tty_flip.h>
105 #include <linux/termios.h>
106 #include <linux/tty_driver.h>
107 #include <linux/serial.h>
108 #include <linux/ptrace.h>
109 #include <linux/ioport.h>
111 #include <linux/cdk.h>
112 #include <linux/comstats.h>
113 #include <linux/delay.h>
114 #include <linux/bitops.h>
116 #include <asm/system.h>
120 #include <linux/vmalloc.h>
121 #include <linux/init.h>
123 #include <asm/uaccess.h>
125 #include "ip2types.h"
126 #include "ip2trace.h"
127 #include "ip2ioctl.h"
136 #include <linux/proc_fs.h>
137 #include <linux/seq_file.h>
139 static const struct file_operations ip2mem_proc_fops;
140 static int ip2_read_proc(char *, char **, off_t, int, int *, void * );
142 /********************/
143 /* Type Definitions */
144 /********************/
150 /* String constants to identify ourselves */
151 static char *pcName = "Computone IntelliPort Plus multiport driver";
152 static char *pcVersion = "1.2.14";
154 /* String constants for port names */
155 static char *pcDriver_name = "ip2";
156 static char *pcIpl = "ip2ipl";
158 // cheezy kludge or genius - you decide?
159 int ip2_loadmain(int *, int *, unsigned char *, int);
160 static unsigned char *Fip_firmware;
161 static int Fip_firmware_size;
163 /***********************/
164 /* Function Prototypes */
165 /***********************/
167 /* Global module entry functions */
169 /* Private (static) functions */
170 static int ip2_open(PTTY, struct file *);
171 static void ip2_close(PTTY, struct file *);
172 static int ip2_write(PTTY, const unsigned char *, int);
173 static int ip2_putchar(PTTY, unsigned char);
174 static void ip2_flush_chars(PTTY);
175 static int ip2_write_room(PTTY);
176 static int ip2_chars_in_buf(PTTY);
177 static void ip2_flush_buffer(PTTY);
178 static int ip2_ioctl(PTTY, struct file *, UINT, ULONG);
179 static void ip2_set_termios(PTTY, struct ktermios *);
180 static void ip2_set_line_discipline(PTTY);
181 static void ip2_throttle(PTTY);
182 static void ip2_unthrottle(PTTY);
183 static void ip2_stop(PTTY);
184 static void ip2_start(PTTY);
185 static void ip2_hangup(PTTY);
186 static int ip2_tiocmget(struct tty_struct *tty, struct file *file);
187 static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
188 unsigned int set, unsigned int clear);
190 static void set_irq(int, int);
191 static void ip2_interrupt_bh(struct work_struct *work);
192 static irqreturn_t ip2_interrupt(int irq, void *dev_id);
193 static void ip2_poll(unsigned long arg);
194 static inline void service_all_boards(void);
195 static void do_input(struct work_struct *);
196 static void do_status(struct work_struct *);
198 static void ip2_wait_until_sent(PTTY,int);
200 static void set_params (i2ChanStrPtr, struct ktermios *);
201 static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
202 static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
204 static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
205 static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
206 static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG);
207 static int ip2_ipl_open(struct inode *, struct file *);
209 static int DumpTraceBuffer(char __user *, int);
210 static int DumpFifoBuffer( char __user *, int);
212 static void ip2_init_board(int);
213 static unsigned short find_eisa_board(int);
219 static struct tty_driver *ip2_tty_driver;
221 /* Here, then is a table of board pointers which the interrupt routine should
222 * scan through to determine who it must service.
224 static unsigned short i2nBoards; // Number of boards here
226 static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
228 static i2ChanStrPtr DevTable[IP2_MAX_PORTS];
229 //DevTableMem just used to save addresses for kfree
230 static void *DevTableMem[IP2_MAX_BOARDS];
232 /* This is the driver descriptor for the ip2ipl device, which is used to
233 * download the loadware to the boards.
235 static const struct file_operations ip2_ipl = {
236 .owner = THIS_MODULE,
237 .read = ip2_ipl_read,
238 .write = ip2_ipl_write,
239 .ioctl = ip2_ipl_ioctl,
240 .open = ip2_ipl_open,
243 static unsigned long irq_counter = 0;
244 static unsigned long bh_counter = 0;
246 // Use immediate queue to service interrupts
248 //#define USE_IQ // PCI&2.2 needs work
250 /* The timer_list entry for our poll routine. If interrupt operation is not
251 * selected, the board is serviced periodically to see if anything needs doing.
253 #define POLL_TIMEOUT (jiffies + 1)
254 static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
257 #ifdef IP2DEBUG_TRACE
258 /* Trace (debug) buffer data */
259 #define TRACEMAX 1000
260 static unsigned long tracebuf[TRACEMAX];
261 static int tracestuff;
262 static int tracestrip;
263 static int tracewrap;
270 #if defined(MODULE) && defined(IP2DEBUG_OPEN)
271 #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \
272 tty->name,(pCh->flags),ip2_tty_driver->refcount, \
273 tty->count,/*GET_USE_COUNT(module)*/0,s)
282 #include "i2ellis.c" /* Extremely low-level interface services */
283 #include "i2cmd.c" /* Standard loadware command definitions */
284 #include "i2lib.c" /* High level interface services */
286 /* Configuration area for modprobe */
288 MODULE_AUTHOR("Doug McNash");
289 MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
291 static int poll_only = 0;
294 static int Eisa_slot;
297 static char rirqs[IP2_MAX_BOARDS];
298 static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
300 /* for sysfs class support */
301 static struct class *ip2_class;
303 // Some functions to keep track of what irq's we have
306 is_valid_irq(int irq)
310 while ((*i != 0) && (*i != irq)) {
317 mark_requested_irq( char irq )
319 rirqs[iindx++] = irq;
324 clear_requested_irq( char irq )
327 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
328 if (rirqs[i] == irq) {
338 have_requested_irq( char irq )
340 // array init to zeros so 0 irq will not be requested as a side effect
342 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
349 /******************************************************************************/
350 /* Function: cleanup_module() */
351 /* Parameters: None */
352 /* Returns: Nothing */
355 /* This is a required entry point for an installable module. It has to return */
356 /* the device and the driver to a passive state. It should not be necessary */
357 /* to reset the board fully, especially as the loadware is downloaded */
358 /* externally rather than in the driver. We just want to disable the board */
359 /* and clear the loadware to a reset state. To allow this there has to be a */
360 /* way to detect whether the board has the loadware running at init time to */
361 /* handle subsequent installations of the driver. All memory allocated by the */
362 /* driver should be returned since it may be unloaded from memory. */
363 /******************************************************************************/
366 ip2_cleanup_module(void)
372 printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion );
374 /* Stop poll timer if we had one. */
376 del_timer ( &PollTimer );
380 /* Reset the boards we have. */
381 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
382 if ( i2BoardPtrTable[i] ) {
383 iiReset( i2BoardPtrTable[i] );
387 /* The following is done at most once, if any boards were installed. */
388 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
389 if ( i2BoardPtrTable[i] ) {
390 iiResetDelay( i2BoardPtrTable[i] );
391 /* free io addresses and Tibet */
392 release_region( ip2config.addr[i], 8 );
393 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
394 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
396 /* Disable and remove interrupt handler. */
397 if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) {
398 free_irq ( ip2config.irq[i], (void *)&pcName);
399 clear_requested_irq( ip2config.irq[i]);
402 class_destroy(ip2_class);
403 if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) {
404 printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
406 put_tty_driver(ip2_tty_driver);
407 unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
408 remove_proc_entry("ip2mem", NULL);
411 for (i = 0; i < IP2_MAX_BOARDS; i++) {
414 if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
415 pci_disable_device(ip2config.pci_dev[i]);
416 pci_dev_put(ip2config.pci_dev[i]);
417 ip2config.pci_dev[i] = NULL;
420 if ((pB = i2BoardPtrTable[i]) != 0 ) {
422 i2BoardPtrTable[i] = NULL;
424 if ((DevTableMem[i]) != NULL ) {
425 kfree ( DevTableMem[i] );
426 DevTableMem[i] = NULL;
430 /* Cleanup the iiEllis subsystem. */
433 printk (KERN_DEBUG "IP2 Unloaded\n" );
436 module_exit(ip2_cleanup_module);
439 static const struct tty_operations ip2_ops = {
443 .put_char = ip2_putchar,
444 .flush_chars = ip2_flush_chars,
445 .write_room = ip2_write_room,
446 .chars_in_buffer = ip2_chars_in_buf,
447 .flush_buffer = ip2_flush_buffer,
449 .throttle = ip2_throttle,
450 .unthrottle = ip2_unthrottle,
451 .set_termios = ip2_set_termios,
452 .set_ldisc = ip2_set_line_discipline,
455 .hangup = ip2_hangup,
456 .read_proc = ip2_read_proc,
457 .tiocmget = ip2_tiocmget,
458 .tiocmset = ip2_tiocmset,
461 /******************************************************************************/
462 /* Function: ip2_loadmain() */
463 /* Parameters: irq, io from command line of insmod et. al. */
464 /* pointer to fip firmware and firmware size for boards */
465 /* Returns: Success (0) */
468 /* This was the required entry point for all drivers (now in ip2.c) */
469 /* It performs all */
470 /* initialisation of the devices and driver structures, and registers itself */
471 /* with the relevant kernel modules. */
472 /******************************************************************************/
473 /* IRQF_DISABLED - if set blocks all interrupts else only this line */
474 /* IRQF_SHARED - for shared irq PCI or maybe EISA only */
475 /* SA_RANDOM - can be source for cert. random number generators */
476 #define IP2_SA_FLAGS 0
479 ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize)
484 i2eBordStrPtr pB = NULL;
486 static struct pci_dev *pci_dev_i = NULL;
488 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 );
490 /* process command line arguments to modprobe or
491 insmod i.e. iop & irqp */
492 /* irqp and iop should ALWAYS be specified now... But we check
493 them individually just to be sure, anyways... */
494 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
496 ip2config.addr[i] = iop[i];
499 ip2config.irq[i] = irqp[i];
501 ip2config.irq[i] = 0;
503 // This is a little bit of a hack. If poll_only=1 on command
504 // line back in ip2.c OR all IRQs on all specified boards are
505 // explicitly set to 0, then drop to poll only mode and override
506 // PCI or EISA interrupts. This superceeds the old hack of
507 // triggering if all interrupts were zero (like da default).
508 // Still a hack but less prone to random acts of terrorism.
510 // What we really should do, now that the IRQ default is set
511 // to -1, is to use 0 as a hard coded, do not probe.
514 poll_only |= irqp[i];
518 poll_only = !poll_only;
520 Fip_firmware = firmware;
521 Fip_firmware_size = firmsize;
523 /* Announce our presence */
524 printk( KERN_INFO "%s version %s\n", pcName, pcVersion );
526 // ip2 can be unloaded and reloaded for no good reason
527 // we can't let that happen here or bad things happen
528 // second load hoses board but not system - fixme later
530 printk( KERN_INFO "Still loaded\n" );
535 ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
539 /* Initialise the iiEllis subsystem. */
542 /* Initialize arrays. */
543 memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable );
544 memset( DevTable, 0, sizeof DevTable );
546 /* Initialise all the boards we can find (up to the maximum). */
547 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
548 switch ( ip2config.addr[i] ) {
549 case 0: /* skip this slot even if card is present */
552 /* ISA address must be specified */
553 if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) {
554 printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n",
555 i, ip2config.addr[i] );
556 ip2config.addr[i] = 0;
558 ip2config.type[i] = ISA;
560 /* Check for valid irq argument, set for polling if invalid */
561 if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) {
562 printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]);
563 ip2config.irq[i] = 0;// 0 is polling and is valid in that sense
572 pci_dev_i = pci_get_device(PCI_VENDOR_ID_COMPUTONE,
573 PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i);
574 if (pci_dev_i != NULL) {
577 if (pci_enable_device(pci_dev_i)) {
578 printk( KERN_ERR "IP2: can't enable PCI device at %s\n",
579 pci_name(pci_dev_i));
582 ip2config.type[i] = PCI;
583 ip2config.pci_dev[i] = pci_dev_get(pci_dev_i);
585 pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr);
587 ip2config.addr[i]=(USHORT)(addr&0xfffe);
589 printk( KERN_ERR "IP2: PCI I/O address error\n");
592 // If the PCI BIOS assigned it, lets try and use it. If we
593 // can't acquire it or it screws up, deal with it then.
595 // if (!is_valid_irq(pci_irq)) {
596 // printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq);
599 ip2config.irq[i] = pci_dev_i->irq;
600 } else { // ann error
601 ip2config.addr[i] = 0;
602 printk(KERN_ERR "IP2: PCI board %d not found\n", i);
606 printk( KERN_ERR "IP2: PCI card specified but PCI support not\n");
607 printk( KERN_ERR "IP2: configured in this kernel.\n");
608 printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n");
609 #endif /* CONFIG_PCI */
612 if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) {
613 /* Eisa_irq set as side effect, boo */
614 ip2config.type[i] = EISA;
616 ip2config.irq[i] = Eisa_irq;
621 pci_dev_put(pci_dev_i);
623 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
624 if ( ip2config.addr[i] ) {
625 pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL);
627 i2BoardPtrTable[i] = pB;
628 iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer );
631 printk(KERN_ERR "IP2: board memory allocation error\n");
635 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
636 if ( ( pB = i2BoardPtrTable[i] ) != NULL ) {
641 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
642 if ( i2BoardPtrTable[i] != NULL ) {
647 ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 );
649 ip2_tty_driver->owner = THIS_MODULE;
650 ip2_tty_driver->name = "ttyF";
651 ip2_tty_driver->driver_name = pcDriver_name;
652 ip2_tty_driver->major = IP2_TTY_MAJOR;
653 ip2_tty_driver->minor_start = 0;
654 ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
655 ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
656 ip2_tty_driver->init_termios = tty_std_termios;
657 ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
658 ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
659 tty_set_operations(ip2_tty_driver, &ip2_ops);
661 ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 );
663 /* Register the tty devices. */
664 if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) {
665 printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err);
666 put_tty_driver(ip2_tty_driver);
669 /* Register the IPL driver. */
670 if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) {
671 printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err );
673 /* create the sysfs class */
674 ip2_class = class_create(THIS_MODULE, "ip2");
675 if (IS_ERR(ip2_class)) {
676 err = PTR_ERR(ip2_class);
680 /* Register the read_procmem thing */
681 if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) {
682 printk(KERN_ERR "IP2: failed to register read_procmem\n");
685 ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 );
686 /* Register the interrupt handler or poll handler, depending upon the
687 * specified interrupt.
690 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
691 if ( 0 == ip2config.addr[i] ) {
695 if ( NULL != ( pB = i2BoardPtrTable[i] ) ) {
696 device_create(ip2_class, NULL,
697 MKDEV(IP2_IPL_MAJOR, 4 * i),
699 device_create(ip2_class, NULL,
700 MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
703 for ( box = 0; box < ABS_MAX_BOXES; ++box )
705 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
707 if ( pB->i2eChannelMap[box] & (1 << j) )
709 tty_register_device(ip2_tty_driver,
710 j + ABS_BIGGEST_BOX *
711 (box+i*ABS_MAX_BOXES), NULL);
718 // Poll only forces driver to only use polling and
719 // to ignore the probed PCI or EISA interrupts.
720 ip2config.irq[i] = CIR_POLL;
722 if ( ip2config.irq[i] == CIR_POLL ) {
725 PollTimer.expires = POLL_TIMEOUT;
726 add_timer ( &PollTimer );
728 printk( KERN_INFO "IP2: polling\n");
731 if (have_requested_irq(ip2config.irq[i]))
733 rc = request_irq( ip2config.irq[i], ip2_interrupt,
734 IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
735 pcName, i2BoardPtrTable[i]);
737 printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
738 ip2config.irq[i] = CIR_POLL;
739 printk( KERN_INFO "IP2: Polling %ld/sec.\n",
740 (POLL_TIMEOUT - jiffies));
743 mark_requested_irq(ip2config.irq[i]);
744 /* Initialise the interrupt handler bottom half (aka slih). */
747 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
748 if ( i2BoardPtrTable[i] ) {
749 set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */
753 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 );
757 unregister_chrdev(IP2_IPL_MAJOR, "ip2");
762 /******************************************************************************/
763 /* Function: ip2_init_board() */
764 /* Parameters: Index of board in configuration structure */
765 /* Returns: Success (0) */
768 /* This function initializes the specified board. The loadware is copied to */
769 /* the board, the channel structures are initialized, and the board details */
770 /* are reported on the console. */
771 /******************************************************************************/
773 ip2_init_board( int boardnum )
776 int nports = 0, nboxes = 0;
778 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
780 if ( !iiInitialize ( pB ) ) {
781 printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
782 pB->i2eBase, pB->i2eError );
785 printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
786 ip2config.addr[boardnum], ip2config.irq[boardnum] );
788 if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
789 printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
793 if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size )
795 printk ( KERN_ERR "IP2: failed to download loadware\n" );
796 goto err_release_region;
798 printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
799 pB->i2ePom.e.porVersion,
800 pB->i2ePom.e.porRevision,
801 pB->i2ePom.e.porSubRev, pB->i2eLVersion,
802 pB->i2eLRevision, pB->i2eLSub );
805 switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
808 printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
809 pB->i2ePom.e.porID );
811 goto err_release_region;
814 case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
815 printk ( KERN_INFO "IP2: ISA-4\n" );
819 case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
820 printk ( KERN_INFO "IP2: ISA-8 std\n" );
824 case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
825 printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
829 case POR_ID_FIIEX: /* IntelliPort IIEX */
831 int portnum = IP2_PORTS_PER_BOARD * boardnum;
834 for( box = 0; box < ABS_MAX_BOXES; ++box ) {
835 if ( pB->i2eChannelMap[box] != 0 ) {
838 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
839 if ( pB->i2eChannelMap[box] & 1<< i ) {
844 DevTableMem[boardnum] = pCh =
845 kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
847 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
848 goto err_release_region;
850 if ( !i2InitChannels( pB, nports, pCh ) ) {
851 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
853 goto err_release_region;
855 pB->i2eChannelPtr = &DevTable[portnum];
856 pB->i2eChannelCnt = ABS_MOST_PORTS;
858 for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
859 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
860 if ( pB->i2eChannelMap[box] & (1 << i) ) {
861 DevTable[portnum + i] = pCh;
862 pCh->port_index = portnum + i;
867 printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
868 nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
872 DevTableMem[boardnum] = pCh =
873 kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
875 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
876 goto err_release_region;
878 pB->i2eChannelPtr = pCh;
879 pB->i2eChannelCnt = nports;
880 if ( !i2InitChannels( pB, nports, pCh ) ) {
881 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
883 goto err_release_region;
885 pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
887 for( i = 0; i < pB->i2eChannelCnt; ++i ) {
888 DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
889 pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
893 INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh);
897 release_region(ip2config.addr[boardnum], 8);
900 i2BoardPtrTable[boardnum] = NULL;
904 /******************************************************************************/
905 /* Function: find_eisa_board ( int start_slot ) */
906 /* Parameters: First slot to check */
907 /* Returns: Address of EISA IntelliPort II controller */
910 /* This function searches for an EISA IntelliPort controller, starting */
911 /* from the specified slot number. If the motherboard is not identified as an */
912 /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
913 /* it returns the base address of the controller. */
914 /******************************************************************************/
915 static unsigned short
916 find_eisa_board( int start_slot )
919 unsigned int idm = 0;
920 unsigned int idp = 0;
921 unsigned int base = 0;
928 * First a check for an EISA motherboard, which we do by comparing the
929 * EISA ID registers for the system board and the first couple of slots.
930 * No slot ID should match the system board ID, but on an ISA or PCI
931 * machine the odds are that an empty bus will return similar values for
935 value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
936 for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
937 j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
943 * OK, so we are inclined to believe that this is an EISA machine. Find
944 * an IntelliPort controller.
946 for( i = start_slot; i < 16; i++ ) {
948 idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
949 idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
951 if ( idm == 0x0e8e ) {
952 if ( idp == 0x0281 || idp == 0x0218 ) {
954 } else if ( idp == 0x0282 || idp == 0x0283 ) {
955 ismine = 3; /* Can do edge-trigger */
966 /* It's some sort of EISA card, but at what address is it configured? */
968 setup_address = base + 0xc88;
969 value = inb(base + 0xc86);
970 setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
972 if ( (ismine & 2) && !(value & 0x10) ) {
973 ismine = 1; /* Could be edging, but not */
976 if ( Eisa_irq == 0 ) {
977 Eisa_irq = setup_irq;
978 } else if ( Eisa_irq != setup_irq ) {
979 printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
983 printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
984 base >> 12, idm, idp, setup_address);
986 printk(KERN_DEBUG ", Interrupt %d %s\n",
987 setup_irq, (ismine & 2) ? "(edge)" : "(level)");
989 printk(KERN_DEBUG ", (polled)\n");
992 return setup_address;
995 /******************************************************************************/
996 /* Function: set_irq() */
997 /* Parameters: index to board in board table */
999 /* Returns: Success (0) */
1002 /******************************************************************************/
1004 set_irq( int boardnum, int boardIrq )
1006 unsigned char tempCommand[16];
1007 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
1008 unsigned long flags;
1011 * Notify the boards they may generate interrupts. This is done by
1012 * sending an in-line command to channel 0 on each board. This is why
1013 * the channels have to be defined already. For each board, if the
1014 * interrupt has never been defined, we must do so NOW, directly, since
1015 * board will not send flow control or even give an interrupt until this
1016 * is done. If polling we must send 0 as the interrupt parameter.
1019 // We will get an interrupt here at the end of this function
1021 iiDisableMailIrq(pB);
1023 /* We build up the entire packet header. */
1024 CHANNEL_OF(tempCommand) = 0;
1025 PTYPE_OF(tempCommand) = PTYPE_INLINE;
1026 CMD_COUNT_OF(tempCommand) = 2;
1027 (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
1028 (CMD_OF(tempCommand))[1] = boardIrq;
1030 * Write to FIFO; don't bother to adjust fifo capacity for this, since
1031 * board will respond almost immediately after SendMail hit.
1033 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1034 iiWriteBuf(pB, tempCommand, 4);
1035 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1036 pB->i2eUsingIrq = boardIrq;
1037 pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
1039 /* Need to update number of boards before you enable mailbox int */
1042 CHANNEL_OF(tempCommand) = 0;
1043 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1044 CMD_COUNT_OF(tempCommand) = 6;
1045 (CMD_OF(tempCommand))[0] = 88; // SILO
1046 (CMD_OF(tempCommand))[1] = 64; // chars
1047 (CMD_OF(tempCommand))[2] = 32; // ms
1049 (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK
1050 (CMD_OF(tempCommand))[4] = 64; // chars
1052 (CMD_OF(tempCommand))[5] = 87; // HW_TEST
1053 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1054 iiWriteBuf(pB, tempCommand, 8);
1055 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1057 CHANNEL_OF(tempCommand) = 0;
1058 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1059 CMD_COUNT_OF(tempCommand) = 1;
1060 (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */
1061 iiWriteBuf(pB, tempCommand, 3);
1064 // enable heartbeat for test porpoises
1065 CHANNEL_OF(tempCommand) = 0;
1066 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1067 CMD_COUNT_OF(tempCommand) = 2;
1068 (CMD_OF(tempCommand))[0] = 44; /* get ping */
1069 (CMD_OF(tempCommand))[1] = 200; /* 200 ms */
1070 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1071 iiWriteBuf(pB, tempCommand, 4);
1072 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1075 iiEnableMailIrq(pB);
1076 iiSendPendingMail(pB);
1079 /******************************************************************************/
1080 /* Interrupt Handler Section */
1081 /******************************************************************************/
1084 service_all_boards(void)
1089 /* Service every board on the list */
1090 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
1091 pB = i2BoardPtrTable[i];
1093 i2ServiceBoard( pB );
1099 /******************************************************************************/
1100 /* Function: ip2_interrupt_bh(work) */
1101 /* Parameters: work - pointer to the board structure */
1102 /* Returns: Nothing */
1105 /* Service the board in a bottom half interrupt handler and then */
1106 /* reenable the board's interrupts if it has an IRQ number */
1108 /******************************************************************************/
1110 ip2_interrupt_bh(struct work_struct *work)
1112 i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt);
1113 // pB better well be set or we have a problem! We can only get
1114 // here from the IMMEDIATE queue. Here, we process the boards.
1115 // Checking pB doesn't cost much and it saves us from the sanity checkers.
1120 i2ServiceBoard( pB );
1121 if( pB->i2eUsingIrq ) {
1122 // Re-enable his interrupts
1123 iiEnableMailIrq(pB);
1129 /******************************************************************************/
1130 /* Function: ip2_interrupt(int irq, void *dev_id) */
1131 /* Parameters: irq - interrupt number */
1132 /* pointer to optional device ID structure */
1133 /* Returns: Nothing */
1137 /* Our task here is simply to identify each board which needs servicing. */
1138 /* If we are queuing then, queue it to be serviced, and disable its irq */
1139 /* mask otherwise process the board directly. */
1141 /* We could queue by IRQ but that just complicates things on both ends */
1142 /* with very little gain in performance (how many instructions does */
1143 /* it take to iterate on the immediate queue). */
1146 /******************************************************************************/
1148 ip2_irq_work(i2eBordStrPtr pB)
1151 if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
1152 // Disable his interrupt (will be enabled when serviced)
1153 // This is mostly to protect from reentrancy.
1154 iiDisableMailIrq(pB);
1156 // Park the board on the immediate queue for processing.
1157 schedule_work(&pB->tqueue_interrupt);
1159 // Make sure the immediate queue is flagged to fire.
1163 // We are using immediate servicing here. This sucks and can
1164 // cause all sorts of havoc with ppp and others. The failsafe
1165 // check on iiSendPendingMail could also throw a hairball.
1167 i2ServiceBoard( pB );
1169 #endif /* USE_IQI */
1173 ip2_polled_interrupt(void)
1179 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq );
1181 /* Service just the boards on the list using this irq */
1182 for( i = 0; i < i2nBoards; ++i ) {
1183 pB = i2BoardPtrTable[i];
1185 // Only process those boards which match our IRQ.
1186 // IRQ = 0 for polled boards, we won't poll "IRQ" boards
1188 if ( pB && (pB->i2eUsingIrq == irq) ) {
1195 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1199 ip2_interrupt(int irq, void *dev_id)
1201 i2eBordStrPtr pB = dev_id;
1203 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq );
1209 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1213 /******************************************************************************/
1214 /* Function: ip2_poll(unsigned long arg) */
1216 /* Returns: Nothing */
1219 /* This function calls the library routine i2ServiceBoard for each board in */
1220 /* the board table. This is used instead of the interrupt routine when polled */
1221 /* mode is specified. */
1222 /******************************************************************************/
1224 ip2_poll(unsigned long arg)
1226 ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
1228 TimerOn = 0; // it's the truth but not checked in service
1230 // Just polled boards, IRQ = 0 will hit all non-interrupt boards.
1231 // It will NOT poll boards handled by hard interrupts.
1232 // The issue of queued BH interrupts is handled in ip2_interrupt().
1233 ip2_polled_interrupt();
1235 PollTimer.expires = POLL_TIMEOUT;
1236 add_timer( &PollTimer );
1239 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1242 static void do_input(struct work_struct *work)
1244 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input);
1245 unsigned long flags;
1247 ip2trace(CHANN, ITRC_INPUT, 21, 0 );
1250 if ( pCh->pTTY != NULL ) {
1251 read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
1252 if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
1253 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1256 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1258 ip2trace(CHANN, ITRC_INPUT, 22, 0 );
1260 i2InputFlush( pCh );
1264 // code duplicated from n_tty (ldisc)
1265 static inline void isig(int sig, struct tty_struct *tty, int flush)
1268 kill_pgrp(tty->pgrp, sig, 1);
1269 if (flush || !L_NOFLSH(tty)) {
1270 if ( tty->ldisc.flush_buffer )
1271 tty->ldisc.flush_buffer(tty);
1272 i2InputFlush( tty->driver_data );
1276 static void do_status(struct work_struct *work)
1278 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status);
1281 status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
1283 ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
1285 if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
1286 if ( (status & I2_BRK) ) {
1287 // code duplicated from n_tty (ldisc)
1288 if (I_IGNBRK(pCh->pTTY))
1290 if (I_BRKINT(pCh->pTTY)) {
1291 isig(SIGINT, pCh->pTTY, 1);
1294 wake_up_interruptible(&pCh->pTTY->read_wait);
1296 #ifdef NEVER_HAPPENS_AS_SETUP_XXX
1297 // and can't work because we don't know the_char
1298 // as the_char is reported on a separate path
1299 // The intelligent board does this stuff as setup
1301 char brkf = TTY_NORMAL;
1302 unsigned char brkc = '\0';
1304 if ( (status & I2_BRK) ) {
1308 else if (status & I2_PAR) {
1311 } else if (status & I2_FRA) {
1314 } else if (status & I2_OVR) {
1318 tmp = pCh->pTTY->real_raw;
1319 pCh->pTTY->real_raw = 0;
1320 pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
1321 pCh->pTTY->real_raw = tmp;
1323 #endif /* NEVER_HAPPENS_AS_SETUP_XXX */
1327 if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
1328 wake_up_interruptible(&pCh->delta_msr_wait);
1330 if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
1331 if ( status & I2_DCD ) {
1333 wake_up_interruptible ( &pCh->open_wait );
1336 if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
1337 tty_hangup( pCh->pTTY );
1343 ip2trace (CHANN, ITRC_STATUS, 26, 0 );
1346 /******************************************************************************/
1347 /* Device Open/Close/Ioctl Entry Point Section */
1348 /******************************************************************************/
1350 /******************************************************************************/
1351 /* Function: open_sanity_check() */
1352 /* Parameters: Pointer to tty structure */
1353 /* Pointer to file structure */
1354 /* Returns: Success or failure */
1357 /* Verifies the structure magic numbers and cross links. */
1358 /******************************************************************************/
1359 #ifdef IP2DEBUG_OPEN
1361 open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
1363 if ( pBrd->i2eValid != I2E_MAGIC ) {
1364 printk(KERN_ERR "IP2: invalid board structure\n" );
1365 } else if ( pBrd != pCh->pMyBord ) {
1366 printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
1368 } else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
1369 printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
1370 } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
1372 printk(KERN_INFO "IP2: all pointers check out!\n" );
1378 /******************************************************************************/
1379 /* Function: ip2_open() */
1380 /* Parameters: Pointer to tty structure */
1381 /* Pointer to file structure */
1382 /* Returns: Success or failure */
1384 /* Description: (MANDATORY) */
1385 /* A successful device open has to run a gauntlet of checks before it */
1386 /* completes. After some sanity checking and pointer setup, the function */
1387 /* blocks until all conditions are satisfied. It then initialises the port to */
1388 /* the default characteristics and returns. */
1389 /******************************************************************************/
1391 ip2_open( PTTY tty, struct file *pFile )
1396 i2ChanStrPtr pCh = DevTable[tty->index];
1398 ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
1400 if ( pCh == NULL ) {
1403 /* Setup pointer links in device and tty structures */
1405 tty->driver_data = pCh;
1407 #ifdef IP2DEBUG_OPEN
1409 "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
1410 tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
1411 open_sanity_check ( pCh, pCh->pMyBord );
1414 i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
1415 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1416 serviceOutgoingFifo( pCh->pMyBord );
1418 /* Block here until the port is ready (per serial and istallion) */
1420 * 1. If the port is in the middle of closing wait for the completion
1421 * and then return the appropriate error.
1423 init_waitqueue_entry(&wait, current);
1424 add_wait_queue(&pCh->close_wait, &wait);
1425 set_current_state( TASK_INTERRUPTIBLE );
1427 if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
1428 if ( pCh->flags & ASYNC_CLOSING ) {
1431 if ( tty_hung_up_p(pFile) ) {
1432 set_current_state( TASK_RUNNING );
1433 remove_wait_queue(&pCh->close_wait, &wait);
1434 return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
1437 set_current_state( TASK_RUNNING );
1438 remove_wait_queue(&pCh->close_wait, &wait);
1441 * 3. Handle a non-blocking open of a normal port.
1443 if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
1444 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1448 * 4. Now loop waiting for the port to be free and carrier present
1451 if ( tty->termios->c_cflag & CLOCAL )
1454 #ifdef IP2DEBUG_OPEN
1455 printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
1460 init_waitqueue_entry(&wait, current);
1461 add_wait_queue(&pCh->open_wait, &wait);
1464 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
1465 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1466 set_current_state( TASK_INTERRUPTIBLE );
1467 serviceOutgoingFifo( pCh->pMyBord );
1468 if ( tty_hung_up_p(pFile) ) {
1469 set_current_state( TASK_RUNNING );
1470 remove_wait_queue(&pCh->open_wait, &wait);
1471 return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
1473 if (!(pCh->flags & ASYNC_CLOSING) &&
1474 (do_clocal || (pCh->dataSetIn & I2_DCD) )) {
1479 #ifdef IP2DEBUG_OPEN
1480 printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
1481 (pCh->flags & ASYNC_CLOSING)?"True":"False");
1482 printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
1484 ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
1485 (pCh->flags & ASYNC_CLOSING) );
1486 /* check for signal */
1487 if (signal_pending(current)) {
1488 rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
1493 set_current_state( TASK_RUNNING );
1494 remove_wait_queue(&pCh->open_wait, &wait);
1496 --pCh->wopen; //why count?
1498 ip2trace (CHANN, ITRC_OPEN, 4, 0 );
1503 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1507 /* first open - Assign termios structure to port */
1508 if ( tty->count == 1 ) {
1509 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1510 /* Now we must send the termios settings to the loadware */
1511 set_params( pCh, NULL );
1515 * Now set any i2lib options. These may go away if the i2lib code ends
1516 * up rolled into the mainline.
1518 pCh->channelOptions |= CO_NBLOCK_WRITE;
1520 #ifdef IP2DEBUG_OPEN
1521 printk (KERN_DEBUG "IP2: open completed\n" );
1523 serviceOutgoingFifo( pCh->pMyBord );
1525 ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
1530 /******************************************************************************/
1531 /* Function: ip2_close() */
1532 /* Parameters: Pointer to tty structure */
1533 /* Pointer to file structure */
1534 /* Returns: Nothing */
1539 /******************************************************************************/
1541 ip2_close( PTTY tty, struct file *pFile )
1543 i2ChanStrPtr pCh = tty->driver_data;
1549 ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
1551 #ifdef IP2DEBUG_OPEN
1552 printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
1555 if ( tty_hung_up_p ( pFile ) ) {
1557 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
1561 if ( tty->count > 1 ) { /* not the last close */
1563 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
1567 pCh->flags |= ASYNC_CLOSING; // last close actually
1571 if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
1573 * Before we drop DTR, make sure the transmitter has completely drained.
1574 * This uses an timeout, after which the close
1577 ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
1580 * At this point we stop accepting input. Here we flush the channel
1581 * input buffer which will allow the board to send up more data. Any
1582 * additional input is tossed at interrupt/poll time.
1584 i2InputFlush( pCh );
1586 /* disable DSS reporting */
1587 i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
1588 CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1589 if ( !tty || (tty->termios->c_cflag & HUPCL) ) {
1590 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
1591 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1592 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1595 serviceOutgoingFifo ( pCh->pMyBord );
1597 tty_ldisc_flush(tty);
1598 tty_driver_flush_buffer(tty);
1604 if (pCh->ClosingDelay) {
1605 msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
1607 wake_up_interruptible(&pCh->open_wait);
1610 pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1611 wake_up_interruptible(&pCh->close_wait);
1613 #ifdef IP2DEBUG_OPEN
1614 DBG_CNT("ip2_close: after wakeups--");
1618 ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
1623 /******************************************************************************/
1624 /* Function: ip2_hangup() */
1625 /* Parameters: Pointer to tty structure */
1626 /* Returns: Nothing */
1631 /******************************************************************************/
1633 ip2_hangup ( PTTY tty )
1635 i2ChanStrPtr pCh = tty->driver_data;
1641 ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
1643 ip2_flush_buffer(tty);
1645 /* disable DSS reporting */
1647 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
1648 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1649 if ( (tty->termios->c_cflag & HUPCL) ) {
1650 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
1651 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1652 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1654 i2QueueCommands(PTYPE_INLINE, pCh, 1, 3,
1655 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1656 serviceOutgoingFifo ( pCh->pMyBord );
1658 wake_up_interruptible ( &pCh->delta_msr_wait );
1660 pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
1662 wake_up_interruptible ( &pCh->open_wait );
1664 ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
1667 /******************************************************************************/
1668 /******************************************************************************/
1669 /* Device Output Section */
1670 /******************************************************************************/
1671 /******************************************************************************/
1673 /******************************************************************************/
1674 /* Function: ip2_write() */
1675 /* Parameters: Pointer to tty structure */
1676 /* Flag denoting data is in user (1) or kernel (0) space */
1677 /* Pointer to data */
1678 /* Number of bytes to write */
1679 /* Returns: Number of bytes actually written */
1681 /* Description: (MANDATORY) */
1684 /******************************************************************************/
1686 ip2_write( PTTY tty, const unsigned char *pData, int count)
1688 i2ChanStrPtr pCh = tty->driver_data;
1690 unsigned long flags;
1692 ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
1694 /* Flush out any buffered data left over from ip2_putchar() calls. */
1695 ip2_flush_chars( tty );
1697 /* This is the actual move bit. Make sure it does what we need!!!!! */
1698 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1699 bytesSent = i2Output( pCh, pData, count);
1700 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1702 ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
1704 return bytesSent > 0 ? bytesSent : 0;
1707 /******************************************************************************/
1708 /* Function: ip2_putchar() */
1709 /* Parameters: Pointer to tty structure */
1710 /* Character to write */
1711 /* Returns: Nothing */
1716 /******************************************************************************/
1718 ip2_putchar( PTTY tty, unsigned char ch )
1720 i2ChanStrPtr pCh = tty->driver_data;
1721 unsigned long flags;
1723 // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
1725 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1726 pCh->Pbuf[pCh->Pbuf_stuff++] = ch;
1727 if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) {
1728 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1729 ip2_flush_chars( tty );
1731 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1734 // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
1737 /******************************************************************************/
1738 /* Function: ip2_flush_chars() */
1739 /* Parameters: Pointer to tty structure */
1740 /* Returns: Nothing */
1744 /******************************************************************************/
1746 ip2_flush_chars( PTTY tty )
1749 i2ChanStrPtr pCh = tty->driver_data;
1750 unsigned long flags;
1752 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1753 if ( pCh->Pbuf_stuff ) {
1755 // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
1758 // We may need to restart i2Output if it does not fullfill this request
1760 strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff);
1761 if ( strip != pCh->Pbuf_stuff ) {
1762 memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
1764 pCh->Pbuf_stuff -= strip;
1766 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1769 /******************************************************************************/
1770 /* Function: ip2_write_room() */
1771 /* Parameters: Pointer to tty structure */
1772 /* Returns: Number of bytes that the driver can accept */
1776 /******************************************************************************/
1778 ip2_write_room ( PTTY tty )
1781 i2ChanStrPtr pCh = tty->driver_data;
1782 unsigned long flags;
1784 read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1785 bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
1786 read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1788 ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
1790 return ((bytesFree > 0) ? bytesFree : 0);
1793 /******************************************************************************/
1794 /* Function: ip2_chars_in_buf() */
1795 /* Parameters: Pointer to tty structure */
1796 /* Returns: Number of bytes queued for transmission */
1801 /******************************************************************************/
1803 ip2_chars_in_buf ( PTTY tty )
1805 i2ChanStrPtr pCh = tty->driver_data;
1807 unsigned long flags;
1809 ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
1811 #ifdef IP2DEBUG_WRITE
1812 printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
1813 pCh->Obuf_char_count + pCh->Pbuf_stuff,
1814 pCh->Obuf_char_count, pCh->Pbuf_stuff );
1816 read_lock_irqsave(&pCh->Obuf_spinlock, flags);
1817 rc = pCh->Obuf_char_count;
1818 read_unlock_irqrestore(&pCh->Obuf_spinlock, flags);
1819 read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1820 rc += pCh->Pbuf_stuff;
1821 read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1825 /******************************************************************************/
1826 /* Function: ip2_flush_buffer() */
1827 /* Parameters: Pointer to tty structure */
1828 /* Returns: Nothing */
1833 /******************************************************************************/
1835 ip2_flush_buffer( PTTY tty )
1837 i2ChanStrPtr pCh = tty->driver_data;
1838 unsigned long flags;
1840 ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
1842 #ifdef IP2DEBUG_WRITE
1843 printk (KERN_DEBUG "IP2: flush buffer\n" );
1845 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1846 pCh->Pbuf_stuff = 0;
1847 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1848 i2FlushOutput( pCh );
1851 ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
1855 /******************************************************************************/
1856 /* Function: ip2_wait_until_sent() */
1857 /* Parameters: Pointer to tty structure */
1858 /* Timeout for wait. */
1859 /* Returns: Nothing */
1862 /* This function is used in place of the normal tty_wait_until_sent, which */
1863 /* only waits for the driver buffers to be empty (or rather, those buffers */
1864 /* reported by chars_in_buffer) which doesn't work for IP2 due to the */
1865 /* indeterminate number of bytes buffered on the board. */
1866 /******************************************************************************/
1868 ip2_wait_until_sent ( PTTY tty, int timeout )
1871 i2ChanStrPtr pCh = tty->driver_data;
1873 tty_wait_until_sent(tty, timeout );
1874 if ( (i = timeout - (jiffies -i)) > 0)
1875 i2DrainOutput( pCh, i );
1878 /******************************************************************************/
1879 /******************************************************************************/
1880 /* Device Input Section */
1881 /******************************************************************************/
1882 /******************************************************************************/
1884 /******************************************************************************/
1885 /* Function: ip2_throttle() */
1886 /* Parameters: Pointer to tty structure */
1887 /* Returns: Nothing */
1892 /******************************************************************************/
1894 ip2_throttle ( PTTY tty )
1896 i2ChanStrPtr pCh = tty->driver_data;
1898 #ifdef IP2DEBUG_READ
1899 printk (KERN_DEBUG "IP2: throttle\n" );
1902 * Signal the poll/interrupt handlers not to forward incoming data to
1903 * the line discipline. This will cause the buffers to fill up in the
1904 * library and thus cause the library routines to send the flow control
1910 /******************************************************************************/
1911 /* Function: ip2_unthrottle() */
1912 /* Parameters: Pointer to tty structure */
1913 /* Returns: Nothing */
1918 /******************************************************************************/
1920 ip2_unthrottle ( PTTY tty )
1922 i2ChanStrPtr pCh = tty->driver_data;
1923 unsigned long flags;
1925 #ifdef IP2DEBUG_READ
1926 printk (KERN_DEBUG "IP2: unthrottle\n" );
1929 /* Pass incoming data up to the line discipline again. */
1931 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1932 serviceOutgoingFifo( pCh->pMyBord );
1933 read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
1934 if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
1935 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1936 #ifdef IP2DEBUG_READ
1937 printk (KERN_DEBUG "i2Input called from unthrottle\n" );
1941 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1945 ip2_start ( PTTY tty )
1947 i2ChanStrPtr pCh = DevTable[tty->index];
1949 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1950 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
1951 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
1952 #ifdef IP2DEBUG_WRITE
1953 printk (KERN_DEBUG "IP2: start tx\n" );
1958 ip2_stop ( PTTY tty )
1960 i2ChanStrPtr pCh = DevTable[tty->index];
1962 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
1963 #ifdef IP2DEBUG_WRITE
1964 printk (KERN_DEBUG "IP2: stop tx\n" );
1968 /******************************************************************************/
1969 /* Device Ioctl Section */
1970 /******************************************************************************/
1972 static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
1974 i2ChanStrPtr pCh = DevTable[tty->index];
1975 #ifdef ENABLE_DSSNOW
1983 FIXME - the following code is causing a NULL pointer dereference in
1984 2.3.51 in an interrupt handler. It's suppose to prompt the board
1985 to return the DSS signal status immediately. Why doesn't it do
1986 the same thing in 2.2.14?
1989 /* This thing is still busted in the 1.2.12 driver on 2.4.x
1990 and even hoses the serial console so the oops can be trapped.
1993 #ifdef ENABLE_DSSNOW
1994 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
1996 init_waitqueue_entry(&wait, current);
1997 add_wait_queue(&pCh->dss_now_wait, &wait);
1998 set_current_state( TASK_INTERRUPTIBLE );
2000 serviceOutgoingFifo( pCh->pMyBord );
2004 set_current_state( TASK_RUNNING );
2005 remove_wait_queue(&pCh->dss_now_wait, &wait);
2007 if (signal_pending(current)) {
2011 return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
2012 | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
2013 | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0)
2014 | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0)
2015 | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0)
2016 | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0);
2019 static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
2020 unsigned int set, unsigned int clear)
2022 i2ChanStrPtr pCh = DevTable[tty->index];
2027 if (set & TIOCM_RTS) {
2028 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
2029 pCh->dataSetOut |= I2_RTS;
2031 if (set & TIOCM_DTR) {
2032 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
2033 pCh->dataSetOut |= I2_DTR;
2036 if (clear & TIOCM_RTS) {
2037 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
2038 pCh->dataSetOut &= ~I2_RTS;
2040 if (clear & TIOCM_DTR) {
2041 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
2042 pCh->dataSetOut &= ~I2_DTR;
2044 serviceOutgoingFifo( pCh->pMyBord );
2048 /******************************************************************************/
2049 /* Function: ip2_ioctl() */
2050 /* Parameters: Pointer to tty structure */
2051 /* Pointer to file structure */
2054 /* Returns: Success or failure */
2059 /******************************************************************************/
2061 ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
2064 i2ChanStrPtr pCh = DevTable[tty->index];
2066 struct async_icount cprev, cnow; /* kernel counter temps */
2067 struct serial_icounter_struct __user *p_cuser;
2069 unsigned long flags;
2070 void __user *argp = (void __user *)arg;
2077 ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
2079 #ifdef IP2DEBUG_IOCTL
2080 printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
2086 ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
2088 rc = get_serial_info(pCh, argp);
2095 ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
2097 rc = set_serial_info(pCh, argp);
2103 rc = tty_check_change(tty);
2108 //return -ENOIOCTLCMD;
2111 //return -ENOIOCTLCMD;
2114 if (STOP_CHAR(tty) != __DISABLED_CHAR) {
2115 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2116 CMD_XMIT_NOW(STOP_CHAR(tty)));
2120 if (START_CHAR(tty) != __DISABLED_CHAR) {
2121 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2122 CMD_XMIT_NOW(START_CHAR(tty)));
2130 case TCSBRK: /* SVID version: non-zero arg --> no break */
2131 rc = tty_check_change(tty);
2133 ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
2136 ip2_wait_until_sent(tty,0);
2138 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
2139 serviceOutgoingFifo( pCh->pMyBord );
2144 case TCSBRKP: /* support for POSIX tcsendbreak() */
2145 rc = tty_check_change(tty);
2147 ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
2150 ip2_wait_until_sent(tty,0);
2151 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2152 CMD_SEND_BRK(arg ? arg*100 : 250));
2153 serviceOutgoingFifo ( pCh->pMyBord );
2159 ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
2161 rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
2168 ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
2170 rc = get_user(arg,(unsigned long __user *) argp);
2173 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
2174 | (arg ? CLOCAL : 0));
2179 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask
2180 * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS
2181 * for masking). Caller should use TIOCGICOUNT to see which one it was
2184 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2185 cprev = pCh->icount; /* note the counters on entry */
2186 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2187 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4,
2188 CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP);
2189 init_waitqueue_entry(&wait, current);
2190 add_wait_queue(&pCh->delta_msr_wait, &wait);
2191 set_current_state( TASK_INTERRUPTIBLE );
2193 serviceOutgoingFifo( pCh->pMyBord );
2195 ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
2199 ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
2201 /* see if a signal did it */
2202 if (signal_pending(current)) {
2206 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2207 cnow = pCh->icount; /* atomic copy */
2208 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2209 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2210 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
2211 rc = -EIO; /* no change => rc */
2214 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2215 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2216 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2217 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2223 set_current_state( TASK_RUNNING );
2224 remove_wait_queue(&pCh->delta_msr_wait, &wait);
2226 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3,
2227 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
2228 if ( ! (pCh->flags & ASYNC_CHECK_CD)) {
2229 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
2231 serviceOutgoingFifo( pCh->pMyBord );
2236 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2237 * Return: write counters to the user passed counter struct
2238 * NB: both 1->0 and 0->1 transitions are counted except for RI where
2239 * only 0->1 is counted. The controller is quite capable of counting
2240 * both, but this done to preserve compatibility with the standard
2244 ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
2246 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2248 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2250 rc = put_user(cnow.cts, &p_cuser->cts);
2251 rc = put_user(cnow.dsr, &p_cuser->dsr);
2252 rc = put_user(cnow.rng, &p_cuser->rng);
2253 rc = put_user(cnow.dcd, &p_cuser->dcd);
2254 rc = put_user(cnow.rx, &p_cuser->rx);
2255 rc = put_user(cnow.tx, &p_cuser->tx);
2256 rc = put_user(cnow.frame, &p_cuser->frame);
2257 rc = put_user(cnow.overrun, &p_cuser->overrun);
2258 rc = put_user(cnow.parity, &p_cuser->parity);
2259 rc = put_user(cnow.brk, &p_cuser->brk);
2260 rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
2264 * The rest are not supported by this driver. By returning -ENOIOCTLCMD they
2265 * will be passed to the line discipline for it to handle.
2271 case TIOCSERGSTRUCT:
2272 case TIOCSERGETMULTI:
2273 case TIOCSERSETMULTI:
2276 ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
2282 ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
2287 /******************************************************************************/
2288 /* Function: GetSerialInfo() */
2289 /* Parameters: Pointer to channel structure */
2290 /* Pointer to old termios structure */
2291 /* Returns: Nothing */
2294 /* This is to support the setserial command, and requires processing of the */
2295 /* standard Linux serial structure. */
2296 /******************************************************************************/
2298 get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
2300 struct serial_struct tmp;
2302 memset ( &tmp, 0, sizeof(tmp) );
2303 tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
2304 if (BID_HAS_654(tmp.type)) {
2305 tmp.type = PORT_16650;
2307 tmp.type = PORT_CIRRUS;
2309 tmp.line = pCh->port_index;
2310 tmp.port = pCh->pMyBord->i2eBase;
2311 tmp.irq = ip2config.irq[pCh->port_index/64];
2312 tmp.flags = pCh->flags;
2313 tmp.baud_base = pCh->BaudBase;
2314 tmp.close_delay = pCh->ClosingDelay;
2315 tmp.closing_wait = pCh->ClosingWaitTime;
2316 tmp.custom_divisor = pCh->BaudDivisor;
2317 return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
2320 /******************************************************************************/
2321 /* Function: SetSerialInfo() */
2322 /* Parameters: Pointer to channel structure */
2323 /* Pointer to old termios structure */
2324 /* Returns: Nothing */
2327 /* This function provides support for setserial, which uses the TIOCSSERIAL */
2328 /* ioctl. Not all setserial parameters are relevant. If the user attempts to */
2329 /* change the IRQ, address or type of the port the ioctl fails. */
2330 /******************************************************************************/
2332 set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
2334 struct serial_struct ns;
2335 int old_flags, old_baud_divisor;
2337 if (copy_from_user(&ns, new_info, sizeof (ns)))
2341 * We don't allow setserial to change IRQ, board address, type or baud
2342 * base. Also line nunber as such is meaningless but we use it for our
2343 * array index so it is fixed also.
2345 if ( (ns.irq != ip2config.irq[pCh->port_index])
2346 || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase)))
2347 || (ns.baud_base != pCh->BaudBase)
2348 || (ns.line != pCh->port_index) ) {
2352 old_flags = pCh->flags;
2353 old_baud_divisor = pCh->BaudDivisor;
2355 if ( !capable(CAP_SYS_ADMIN) ) {
2356 if ( ( ns.close_delay != pCh->ClosingDelay ) ||
2357 ( (ns.flags & ~ASYNC_USR_MASK) !=
2358 (pCh->flags & ~ASYNC_USR_MASK) ) ) {
2362 pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
2363 (ns.flags & ASYNC_USR_MASK);
2364 pCh->BaudDivisor = ns.custom_divisor;
2366 pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
2367 (ns.flags & ASYNC_FLAGS);
2368 pCh->BaudDivisor = ns.custom_divisor;
2369 pCh->ClosingDelay = ns.close_delay * HZ/100;
2370 pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
2373 if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
2374 || (old_baud_divisor != pCh->BaudDivisor) ) {
2375 // Invalidate speed and reset parameters
2376 set_params( pCh, NULL );
2382 /******************************************************************************/
2383 /* Function: ip2_set_termios() */
2384 /* Parameters: Pointer to tty structure */
2385 /* Pointer to old termios structure */
2386 /* Returns: Nothing */
2391 /******************************************************************************/
2393 ip2_set_termios( PTTY tty, struct ktermios *old_termios )
2395 i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
2397 #ifdef IP2DEBUG_IOCTL
2398 printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
2401 set_params( pCh, old_termios );
2404 /******************************************************************************/
2405 /* Function: ip2_set_line_discipline() */
2406 /* Parameters: Pointer to tty structure */
2407 /* Returns: Nothing */
2409 /* Description: Does nothing */
2412 /******************************************************************************/
2414 ip2_set_line_discipline ( PTTY tty )
2416 #ifdef IP2DEBUG_IOCTL
2417 printk (KERN_DEBUG "IP2: set line discipline\n" );
2420 ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
2424 /******************************************************************************/
2425 /* Function: SetLine Characteristics() */
2426 /* Parameters: Pointer to channel structure */
2427 /* Returns: Nothing */
2430 /* This routine is called to update the channel structure with the new line */
2431 /* characteristics, and send the appropriate commands to the board when they */
2433 /******************************************************************************/
2435 set_params( i2ChanStrPtr pCh, struct ktermios *o_tios )
2437 tcflag_t cflag, iflag, lflag;
2438 char stop_char, start_char;
2439 struct ktermios dummy;
2441 lflag = pCh->pTTY->termios->c_lflag;
2442 cflag = pCh->pTTY->termios->c_cflag;
2443 iflag = pCh->pTTY->termios->c_iflag;
2445 if (o_tios == NULL) {
2446 dummy.c_lflag = ~lflag;
2447 dummy.c_cflag = ~cflag;
2448 dummy.c_iflag = ~iflag;
2453 switch ( cflag & CBAUD ) {
2455 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
2456 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
2457 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
2458 pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
2463 * This is the speed that is overloaded with all the other high
2464 * speeds, depending upon the flag settings.
2466 if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
2467 pCh->speed = CBR_57600;
2468 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
2469 pCh->speed = CBR_115200;
2470 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
2471 pCh->speed = CBR_C1;
2473 pCh->speed = CBR_38400;
2476 case B50: pCh->speed = CBR_50; break;
2477 case B75: pCh->speed = CBR_75; break;
2478 case B110: pCh->speed = CBR_110; break;
2479 case B134: pCh->speed = CBR_134; break;
2480 case B150: pCh->speed = CBR_150; break;
2481 case B200: pCh->speed = CBR_200; break;
2482 case B300: pCh->speed = CBR_300; break;
2483 case B600: pCh->speed = CBR_600; break;
2484 case B1200: pCh->speed = CBR_1200; break;
2485 case B1800: pCh->speed = CBR_1800; break;
2486 case B2400: pCh->speed = CBR_2400; break;
2487 case B4800: pCh->speed = CBR_4800; break;
2488 case B9600: pCh->speed = CBR_9600; break;
2489 case B19200: pCh->speed = CBR_19200; break;
2490 case B57600: pCh->speed = CBR_57600; break;
2491 case B115200: pCh->speed = CBR_115200; break;
2492 case B153600: pCh->speed = CBR_153600; break;
2493 case B230400: pCh->speed = CBR_230400; break;
2494 case B307200: pCh->speed = CBR_307200; break;
2495 case B460800: pCh->speed = CBR_460800; break;
2496 case B921600: pCh->speed = CBR_921600; break;
2497 default: pCh->speed = CBR_9600; break;
2499 if ( pCh->speed == CBR_C1 ) {
2500 // Process the custom speed parameters.
2501 int bps = pCh->BaudBase / pCh->BaudDivisor;
2502 if ( bps == 921600 ) {
2503 pCh->speed = CBR_921600;
2506 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
2509 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
2511 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
2512 pCh->dataSetOut |= (I2_DTR | I2_RTS);
2514 if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag))
2516 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2517 CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
2519 if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag))
2521 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2523 (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
2527 /* byte size and parity */
2528 if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag))
2531 switch ( cflag & CSIZE ) {
2532 case CS5: datasize = CSZ_5; break;
2533 case CS6: datasize = CSZ_6; break;
2534 case CS7: datasize = CSZ_7; break;
2535 case CS8: datasize = CSZ_8; break;
2536 default: datasize = CSZ_5; break; /* as per serial.c */
2538 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
2540 /* Process CTS flow control flag setting */
2541 if ( (cflag & CRTSCTS) ) {
2542 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2543 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
2545 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2546 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
2549 // Process XON/XOFF flow control flags settings
2551 stop_char = STOP_CHAR(pCh->pTTY);
2552 start_char = START_CHAR(pCh->pTTY);
2554 //////////// can't be \000
2555 if (stop_char == __DISABLED_CHAR )
2557 stop_char = ~__DISABLED_CHAR;
2559 if (start_char == __DISABLED_CHAR )
2561 start_char = ~__DISABLED_CHAR;
2563 /////////////////////////////////
2565 if ( o_tios->c_cc[VSTART] != start_char )
2567 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
2568 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
2570 if ( o_tios->c_cc[VSTOP] != stop_char )
2572 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
2573 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
2575 if (stop_char == __DISABLED_CHAR )
2577 stop_char = ~__DISABLED_CHAR; //TEST123
2580 if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF)))
2582 if ( iflag & IXOFF ) { // Enable XOFF output flow control
2583 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
2584 } else { // Disable XOFF output flow control
2586 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
2589 if (start_char == __DISABLED_CHAR )
2593 if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY)))
2595 if ( iflag & IXON ) {
2596 if ( iflag & IXANY ) { // Enable XON/XANY output flow control
2597 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
2598 } else { // Enable XON output flow control
2599 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
2601 } else { // Disable XON output flow control
2603 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
2606 if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) )
2608 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2609 CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
2611 if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) )
2613 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2614 CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
2617 if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR))
2618 ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) )
2623 if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
2624 /* Ignore breaks altogether */
2625 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
2627 if ( iflag & BRKINT ) {
2628 if ( iflag & PARMRK ) {
2629 brkrpt = 0x0a; // exception an inline triple
2631 brkrpt = 0x1a; // exception and NULL
2633 brkrpt |= 0x04; // flush input
2635 if ( iflag & PARMRK ) {
2636 brkrpt = 0x0b; //POSIX triple \0377 \0 \0
2638 brkrpt = 0x01; // Null only
2641 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
2644 if (iflag & IGNPAR) {
2646 /* would be 2 for not cirrus bug */
2647 /* would be 0x20 cept for cirrus bug */
2649 if ( iflag & PARMRK ) {
2651 * Replace error characters with 3-byte sequence (\0377,\0,char)
2654 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
2659 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
2661 if (cflag & CLOCAL) {
2662 // Status reporting fails for DCD if this is off
2663 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
2664 pCh->flags &= ~ASYNC_CHECK_CD;
2666 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
2667 pCh->flags |= ASYNC_CHECK_CD;
2671 i2DrainOutput( pCh, 100 );
2674 /******************************************************************************/
2675 /* IPL Device Section */
2676 /******************************************************************************/
2678 /******************************************************************************/
2679 /* Function: ip2_ipl_read() */
2680 /* Parameters: Pointer to device inode */
2681 /* Pointer to file structure */
2682 /* Pointer to data */
2683 /* Number of bytes to read */
2684 /* Returns: Success or failure */
2686 /* Description: Ugly */
2689 /******************************************************************************/
2693 ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
2695 unsigned int minor = iminor(pFile->f_path.dentry->d_inode);
2699 printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
2703 case 0: // IPL device
2706 case 1: // Status dump
2709 case 2: // Ping device
2712 case 3: // Trace device
2713 rc = DumpTraceBuffer ( pData, count );
2715 case 4: // Trace device
2716 rc = DumpFifoBuffer ( pData, count );
2726 DumpFifoBuffer ( char __user *pData, int count )
2730 rc = copy_to_user(pData, DBGBuf, count);
2732 printk(KERN_DEBUG "Last index %d\n", I );
2735 #endif /* DEBUG_FIFO */
2740 DumpTraceBuffer ( char __user *pData, int count )
2742 #ifdef IP2DEBUG_TRACE
2746 int *pIndex = (int __user *)pData;
2748 if ( count < (sizeof(int) * 6) ) {
2751 rc = put_user(tracewrap, pIndex );
2752 rc = put_user(TRACEMAX, ++pIndex );
2753 rc = put_user(tracestrip, ++pIndex );
2754 rc = put_user(tracestuff, ++pIndex );
2755 pData += sizeof(int) * 6;
2756 count -= sizeof(int) * 6;
2758 dumpcount = tracestuff - tracestrip;
2759 if ( dumpcount < 0 ) {
2760 dumpcount += TRACEMAX;
2762 if ( dumpcount > count ) {
2765 chunk = TRACEMAX - tracestrip;
2766 if ( dumpcount > chunk ) {
2767 rc = copy_to_user(pData, &tracebuf[tracestrip],
2768 chunk * sizeof(tracebuf[0]) );
2769 pData += chunk * sizeof(tracebuf[0]);
2771 chunk = dumpcount - chunk;
2775 rc = copy_to_user(pData, &tracebuf[tracestrip],
2776 chunk * sizeof(tracebuf[0]) );
2777 tracestrip += chunk;
2780 rc = put_user(tracestrip, ++pIndex );
2781 rc = put_user(tracestuff, ++pIndex );
2789 /******************************************************************************/
2790 /* Function: ip2_ipl_write() */
2792 /* Pointer to file structure */
2793 /* Pointer to data */
2794 /* Number of bytes to write */
2795 /* Returns: Success or failure */
2800 /******************************************************************************/
2802 ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
2805 printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
2810 /******************************************************************************/
2811 /* Function: ip2_ipl_ioctl() */
2812 /* Parameters: Pointer to device inode */
2813 /* Pointer to file structure */
2816 /* Returns: Success or failure */
2821 /******************************************************************************/
2823 ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg )
2825 unsigned int iplminor = iminor(pInode);
2827 void __user *argp = (void __user *)arg;
2828 ULONG __user *pIndex = argp;
2829 i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
2833 printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
2836 switch ( iplminor ) {
2837 case 0: // IPL device
2840 case 1: // Status dump
2845 case 64: /* Driver - ip2stat */
2846 rc = put_user(ip2_tty_driver->refcount, pIndex++ );
2847 rc = put_user(irq_counter, pIndex++ );
2848 rc = put_user(bh_counter, pIndex++ );
2851 case 65: /* Board - ip2stat */
2853 rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
2854 rc = put_user(inb(pB->i2eStatus),
2855 (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
2862 if (cmd < IP2_MAX_PORTS) {
2863 pCh = DevTable[cmd];
2866 rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
2876 case 2: // Ping device
2879 case 3: // Trace device
2881 * akpm: This used to write a whole bunch of function addresses
2882 * to userspace, which generated lots of put_user() warnings.
2883 * I killed it all. Just return "success" and don't do
2899 /******************************************************************************/
2900 /* Function: ip2_ipl_open() */
2901 /* Parameters: Pointer to device inode */
2902 /* Pointer to file structure */
2903 /* Returns: Success or failure */
2908 /******************************************************************************/
2910 ip2_ipl_open( struct inode *pInode, struct file *pFile )
2914 printk (KERN_DEBUG "IP2IPL: open\n" );
2916 cycle_kernel_lock();
2921 proc_ip2mem_show(struct seq_file *m, void *v)
2928 #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n"
2929 #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n"
2930 #define FMTLIN3 " 0x%04x 0x%04x rc flow\n"
2934 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
2935 pB = i2BoardPtrTable[i];
2937 seq_printf(m,"board %d:\n",i);
2938 seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n",
2939 pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
2943 seq_printf(m,"#: tty flags, port flags, cflags, iflags\n");
2944 for (i=0; i < IP2_MAX_PORTS; i++) {
2948 if (tty && tty->count) {
2949 seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags,
2950 tty->termios->c_cflag,tty->termios->c_iflag);
2952 seq_printf(m,FMTLIN2,
2953 pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
2954 seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room);
2961 static int proc_ip2mem_open(struct inode *inode, struct file *file)
2963 return single_open(file, proc_ip2mem_show, NULL);
2966 static const struct file_operations ip2mem_proc_fops = {
2967 .owner = THIS_MODULE,
2968 .open = proc_ip2mem_open,
2970 .llseek = seq_lseek,
2971 .release = single_release,
2975 * This is the handler for /proc/tty/driver/ip2
2977 * This stretch of code has been largely plagerized from at least three
2978 * different sources including ip2mkdev.c and a couple of other drivers.
2979 * The bugs are all mine. :-) =mhw=
2981 static int ip2_read_proc(char *page, char **start, off_t off,
2982 int count, int *eof, void *data)
2992 len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion );
2993 len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
2994 IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
2995 IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
2997 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
2998 /* This need to be reset for a board by board count... */
3000 pB = i2BoardPtrTable[i];
3002 switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED )
3005 len += sprintf( page+len, "Board %d: EX ports=", i );
3006 for( box = 0; box < ABS_MAX_BOXES; ++box )
3010 if( pB->i2eChannelMap[box] != 0 ) ++boxes;
3011 for( j = 0; j < ABS_BIGGEST_BOX; ++j )
3013 if( pB->i2eChannelMap[box] & 1<< j ) {
3017 len += sprintf( page+len, "%d,", ports );
3021 --len; /* Backup over that last comma */
3023 len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 );
3027 len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i );
3032 len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i );
3037 len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i );
3042 len += sprintf(page+len, "Board %d: unknown", i );
3043 /* Don't try and probe for minor numbers */
3048 /* Don't try and probe for minor numbers */
3049 len += sprintf(page+len, "Board %d: vacant", i );
3054 len += sprintf(page+len, " minors=" );
3056 for ( box = 0; box < ABS_MAX_BOXES; ++box )
3058 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
3060 if ( pB->i2eChannelMap[box] & (1 << j) )
3062 len += sprintf (page+len,"%d,",
3063 j + ABS_BIGGEST_BOX *
3064 (box+i*ABS_MAX_BOXES));
3069 page[ len - 1 ] = '\n'; /* Overwrite that last comma */
3071 len += sprintf (page+len,"\n" );
3074 if (len+begin > off+count)
3076 if (len+begin < off) {
3082 if (i >= IP2_MAX_BOARDS)
3084 if (off >= len+begin)
3087 *start = page + (off-begin);
3088 return ((count < begin+len-off) ? count : begin+len-off);
3091 /******************************************************************************/
3092 /* Function: ip2trace() */
3093 /* Parameters: Value to add to trace buffer */
3094 /* Returns: Nothing */
3099 /******************************************************************************/
3100 #ifdef IP2DEBUG_TRACE
3102 ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
3105 unsigned long *pCode = &codes;
3106 union ip2breadcrumb bc;
3110 tracebuf[tracestuff++] = jiffies;
3111 if ( tracestuff == TRACEMAX ) {
3114 if ( tracestuff == tracestrip ) {
3115 if ( ++tracestrip == TRACEMAX ) {
3121 bc.hdr.port = 0xff & pn;
3123 bc.hdr.codes = (unsigned char)( codes & 0xff );
3124 bc.hdr.label = label;
3125 tracebuf[tracestuff++] = bc.value;
3128 if ( tracestuff == TRACEMAX ) {
3131 if ( tracestuff == tracestrip ) {
3132 if ( ++tracestrip == TRACEMAX ) {
3141 tracebuf[tracestuff++] = *++pCode;
3147 MODULE_LICENSE("GPL");
3149 static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
3150 { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) },
3154 MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);