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Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
[deliverable/linux.git] / drivers / char / ip2 / ip2main.c
1 /*
2 *
3 * (c) 1999 by Computone Corporation
4 *
5 ********************************************************************************
6 *
7 * PACKAGE: Linux tty Device Driver for IntelliPort family of multiport
8 * serial I/O controllers.
9 *
10 * DESCRIPTION: Mainline code for the device driver
11 *
12 *******************************************************************************/
13 // ToDo:
14 //
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.
19 //
20 // Done:
21 //
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
26 //
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.
30 //
31 // 1.2.12 /\/\|=mhw=|\/\/
32 // Cleaned up some remove queue cut and paste errors
33 //
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
44 //
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.
50 //
51 // 1.2.9
52 // Four box EX was barfing on >128k kmalloc, made structure smaller by
53 // reducing output buffer size
54 //
55 // 1.2.8
56 // Device file system support (MHW)
57 //
58 // 1.2.7
59 // Fixed
60 // Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
61 //
62 // 1.2.6
63 //Fixes DCD problems
64 // DCD was not reported when CLOCAL was set on call to TIOCMGET
65 //
66 //Enhancements:
67 // TIOCMGET requests and waits for status return
68 // No DSS interrupts enabled except for DCD when needed
69 //
70 // For internal use only
71 //
72 //#define IP2DEBUG_INIT
73 //#define IP2DEBUG_OPEN
74 //#define IP2DEBUG_WRITE
75 //#define IP2DEBUG_READ
76 //#define IP2DEBUG_IOCTL
77 //#define IP2DEBUG_IPL
78
79 //#define IP2DEBUG_TRACE
80 //#define DEBUG_FIFO
81
82 /************/
83 /* Includes */
84 /************/
85
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>
96 #include <linux/mm.h>
97 #include <linux/slab.h>
98 #include <linux/major.h>
99 #include <linux/wait.h>
100 #include <linux/device.h>
101
102 #include <linux/tty.h>
103 #include <linux/tty_flip.h>
104 #include <linux/termios.h>
105 #include <linux/tty_driver.h>
106 #include <linux/serial.h>
107 #include <linux/ptrace.h>
108 #include <linux/ioport.h>
109
110 #include <linux/cdk.h>
111 #include <linux/comstats.h>
112 #include <linux/delay.h>
113 #include <linux/bitops.h>
114
115 #include <asm/system.h>
116 #include <asm/io.h>
117 #include <asm/irq.h>
118
119 #include <linux/vmalloc.h>
120 #include <linux/init.h>
121
122 #include <asm/uaccess.h>
123
124 #include "ip2types.h"
125 #include "ip2trace.h"
126 #include "ip2ioctl.h"
127 #include "ip2.h"
128 #include "i2ellis.h"
129 #include "i2lib.h"
130
131 /*****************
132 * /proc/ip2mem *
133 *****************/
134
135 #include <linux/proc_fs.h>
136 #include <linux/seq_file.h>
137
138 static const struct file_operations ip2mem_proc_fops;
139 static int ip2_read_proc(char *, char **, off_t, int, int *, void * );
140
141 /********************/
142 /* Type Definitions */
143 /********************/
144
145 /*************/
146 /* Constants */
147 /*************/
148
149 /* String constants to identify ourselves */
150 static char *pcName = "Computone IntelliPort Plus multiport driver";
151 static char *pcVersion = "1.2.14";
152
153 /* String constants for port names */
154 static char *pcDriver_name = "ip2";
155 static char *pcIpl = "ip2ipl";
156
157 // cheezy kludge or genius - you decide?
158 int ip2_loadmain(int *, int *, unsigned char *, int);
159 static unsigned char *Fip_firmware;
160 static int Fip_firmware_size;
161
162 /***********************/
163 /* Function Prototypes */
164 /***********************/
165
166 /* Global module entry functions */
167
168 /* Private (static) functions */
169 static int ip2_open(PTTY, struct file *);
170 static void ip2_close(PTTY, struct file *);
171 static int ip2_write(PTTY, const unsigned char *, int);
172 static int ip2_putchar(PTTY, unsigned char);
173 static void ip2_flush_chars(PTTY);
174 static int ip2_write_room(PTTY);
175 static int ip2_chars_in_buf(PTTY);
176 static void ip2_flush_buffer(PTTY);
177 static int ip2_ioctl(PTTY, struct file *, UINT, ULONG);
178 static void ip2_set_termios(PTTY, struct ktermios *);
179 static void ip2_set_line_discipline(PTTY);
180 static void ip2_throttle(PTTY);
181 static void ip2_unthrottle(PTTY);
182 static void ip2_stop(PTTY);
183 static void ip2_start(PTTY);
184 static void ip2_hangup(PTTY);
185 static int ip2_tiocmget(struct tty_struct *tty, struct file *file);
186 static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
187 unsigned int set, unsigned int clear);
188
189 static void set_irq(int, int);
190 static void ip2_interrupt_bh(struct work_struct *work);
191 static irqreturn_t ip2_interrupt(int irq, void *dev_id);
192 static void ip2_poll(unsigned long arg);
193 static inline void service_all_boards(void);
194 static void do_input(struct work_struct *);
195 static void do_status(struct work_struct *);
196
197 static void ip2_wait_until_sent(PTTY,int);
198
199 static void set_params (i2ChanStrPtr, struct ktermios *);
200 static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
201 static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
202
203 static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
204 static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
205 static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG);
206 static int ip2_ipl_open(struct inode *, struct file *);
207
208 static int DumpTraceBuffer(char __user *, int);
209 static int DumpFifoBuffer( char __user *, int);
210
211 static void ip2_init_board(int);
212 static unsigned short find_eisa_board(int);
213
214 /***************/
215 /* Static Data */
216 /***************/
217
218 static struct tty_driver *ip2_tty_driver;
219
220 /* Here, then is a table of board pointers which the interrupt routine should
221 * scan through to determine who it must service.
222 */
223 static unsigned short i2nBoards; // Number of boards here
224
225 static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
226
227 static i2ChanStrPtr DevTable[IP2_MAX_PORTS];
228 //DevTableMem just used to save addresses for kfree
229 static void *DevTableMem[IP2_MAX_BOARDS];
230
231 /* This is the driver descriptor for the ip2ipl device, which is used to
232 * download the loadware to the boards.
233 */
234 static const struct file_operations ip2_ipl = {
235 .owner = THIS_MODULE,
236 .read = ip2_ipl_read,
237 .write = ip2_ipl_write,
238 .ioctl = ip2_ipl_ioctl,
239 .open = ip2_ipl_open,
240 };
241
242 static unsigned long irq_counter = 0;
243 static unsigned long bh_counter = 0;
244
245 // Use immediate queue to service interrupts
246 #define USE_IQI
247 //#define USE_IQ // PCI&2.2 needs work
248
249 /* The timer_list entry for our poll routine. If interrupt operation is not
250 * selected, the board is serviced periodically to see if anything needs doing.
251 */
252 #define POLL_TIMEOUT (jiffies + 1)
253 static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
254 static char TimerOn;
255
256 #ifdef IP2DEBUG_TRACE
257 /* Trace (debug) buffer data */
258 #define TRACEMAX 1000
259 static unsigned long tracebuf[TRACEMAX];
260 static int tracestuff;
261 static int tracestrip;
262 static int tracewrap;
263 #endif
264
265 /**********/
266 /* Macros */
267 /**********/
268
269 #if defined(MODULE) && defined(IP2DEBUG_OPEN)
270 #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \
271 tty->name,(pCh->flags),ip2_tty_driver->refcount, \
272 tty->count,/*GET_USE_COUNT(module)*/0,s)
273 #else
274 #define DBG_CNT(s)
275 #endif
276
277 /********/
278 /* Code */
279 /********/
280
281 #include "i2ellis.c" /* Extremely low-level interface services */
282 #include "i2cmd.c" /* Standard loadware command definitions */
283 #include "i2lib.c" /* High level interface services */
284
285 /* Configuration area for modprobe */
286
287 MODULE_AUTHOR("Doug McNash");
288 MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
289
290 static int poll_only = 0;
291
292 static int Eisa_irq;
293 static int Eisa_slot;
294
295 static int iindx;
296 static char rirqs[IP2_MAX_BOARDS];
297 static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
298
299 /* for sysfs class support */
300 static struct class *ip2_class;
301
302 // Some functions to keep track of what irq's we have
303
304 static int
305 is_valid_irq(int irq)
306 {
307 int *i = Valid_Irqs;
308
309 while ((*i != 0) && (*i != irq)) {
310 i++;
311 }
312 return (*i);
313 }
314
315 static void
316 mark_requested_irq( char irq )
317 {
318 rirqs[iindx++] = irq;
319 }
320
321 #ifdef MODULE
322 static int
323 clear_requested_irq( char irq )
324 {
325 int i;
326 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
327 if (rirqs[i] == irq) {
328 rirqs[i] = 0;
329 return 1;
330 }
331 }
332 return 0;
333 }
334 #endif
335
336 static int
337 have_requested_irq( char irq )
338 {
339 // array init to zeros so 0 irq will not be requested as a side effect
340 int i;
341 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
342 if (rirqs[i] == irq)
343 return 1;
344 }
345 return 0;
346 }
347
348 /******************************************************************************/
349 /* Function: init_module() */
350 /* Parameters: None */
351 /* Returns: Success (0) */
352 /* */
353 /* Description: */
354 /* This is a required entry point for an installable module. It simply calls */
355 /* the driver initialisation function and returns what it returns. */
356 /******************************************************************************/
357 #ifdef MODULE
358 static int __init
359 ip2_init_module(void)
360 {
361 #ifdef IP2DEBUG_INIT
362 printk (KERN_DEBUG "Loading module ...\n" );
363 #endif
364 return 0;
365 }
366 module_init(ip2_init_module);
367 #endif /* MODULE */
368
369 /******************************************************************************/
370 /* Function: cleanup_module() */
371 /* Parameters: None */
372 /* Returns: Nothing */
373 /* */
374 /* Description: */
375 /* This is a required entry point for an installable module. It has to return */
376 /* the device and the driver to a passive state. It should not be necessary */
377 /* to reset the board fully, especially as the loadware is downloaded */
378 /* externally rather than in the driver. We just want to disable the board */
379 /* and clear the loadware to a reset state. To allow this there has to be a */
380 /* way to detect whether the board has the loadware running at init time to */
381 /* handle subsequent installations of the driver. All memory allocated by the */
382 /* driver should be returned since it may be unloaded from memory. */
383 /******************************************************************************/
384 #ifdef MODULE
385 void __exit
386 ip2_cleanup_module(void)
387 {
388 int err;
389 int i;
390
391 #ifdef IP2DEBUG_INIT
392 printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion );
393 #endif
394 /* Stop poll timer if we had one. */
395 if ( TimerOn ) {
396 del_timer ( &PollTimer );
397 TimerOn = 0;
398 }
399
400 /* Reset the boards we have. */
401 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
402 if ( i2BoardPtrTable[i] ) {
403 iiReset( i2BoardPtrTable[i] );
404 }
405 }
406
407 /* The following is done at most once, if any boards were installed. */
408 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
409 if ( i2BoardPtrTable[i] ) {
410 iiResetDelay( i2BoardPtrTable[i] );
411 /* free io addresses and Tibet */
412 release_region( ip2config.addr[i], 8 );
413 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
414 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
415 }
416 /* Disable and remove interrupt handler. */
417 if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) {
418 free_irq ( ip2config.irq[i], (void *)&pcName);
419 clear_requested_irq( ip2config.irq[i]);
420 }
421 }
422 class_destroy(ip2_class);
423 if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) {
424 printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
425 }
426 put_tty_driver(ip2_tty_driver);
427 unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
428 remove_proc_entry("ip2mem", NULL);
429
430 // free memory
431 for (i = 0; i < IP2_MAX_BOARDS; i++) {
432 void *pB;
433 #ifdef CONFIG_PCI
434 if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
435 pci_disable_device(ip2config.pci_dev[i]);
436 pci_dev_put(ip2config.pci_dev[i]);
437 ip2config.pci_dev[i] = NULL;
438 }
439 #endif
440 if ((pB = i2BoardPtrTable[i]) != 0 ) {
441 kfree ( pB );
442 i2BoardPtrTable[i] = NULL;
443 }
444 if ((DevTableMem[i]) != NULL ) {
445 kfree ( DevTableMem[i] );
446 DevTableMem[i] = NULL;
447 }
448 }
449
450 /* Cleanup the iiEllis subsystem. */
451 iiEllisCleanup();
452 #ifdef IP2DEBUG_INIT
453 printk (KERN_DEBUG "IP2 Unloaded\n" );
454 #endif
455 }
456 module_exit(ip2_cleanup_module);
457 #endif /* MODULE */
458
459 static const struct tty_operations ip2_ops = {
460 .open = ip2_open,
461 .close = ip2_close,
462 .write = ip2_write,
463 .put_char = ip2_putchar,
464 .flush_chars = ip2_flush_chars,
465 .write_room = ip2_write_room,
466 .chars_in_buffer = ip2_chars_in_buf,
467 .flush_buffer = ip2_flush_buffer,
468 .ioctl = ip2_ioctl,
469 .throttle = ip2_throttle,
470 .unthrottle = ip2_unthrottle,
471 .set_termios = ip2_set_termios,
472 .set_ldisc = ip2_set_line_discipline,
473 .stop = ip2_stop,
474 .start = ip2_start,
475 .hangup = ip2_hangup,
476 .read_proc = ip2_read_proc,
477 .tiocmget = ip2_tiocmget,
478 .tiocmset = ip2_tiocmset,
479 };
480
481 /******************************************************************************/
482 /* Function: ip2_loadmain() */
483 /* Parameters: irq, io from command line of insmod et. al. */
484 /* pointer to fip firmware and firmware size for boards */
485 /* Returns: Success (0) */
486 /* */
487 /* Description: */
488 /* This was the required entry point for all drivers (now in ip2.c) */
489 /* It performs all */
490 /* initialisation of the devices and driver structures, and registers itself */
491 /* with the relevant kernel modules. */
492 /******************************************************************************/
493 /* IRQF_DISABLED - if set blocks all interrupts else only this line */
494 /* IRQF_SHARED - for shared irq PCI or maybe EISA only */
495 /* SA_RANDOM - can be source for cert. random number generators */
496 #define IP2_SA_FLAGS 0
497
498 int
499 ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize)
500 {
501 int i, j, box;
502 int err = 0;
503 static int loaded;
504 i2eBordStrPtr pB = NULL;
505 int rc = -1;
506 static struct pci_dev *pci_dev_i = NULL;
507
508 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 );
509
510 /* process command line arguments to modprobe or
511 insmod i.e. iop & irqp */
512 /* irqp and iop should ALWAYS be specified now... But we check
513 them individually just to be sure, anyways... */
514 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
515 if (iop) {
516 ip2config.addr[i] = iop[i];
517 if (irqp) {
518 if( irqp[i] >= 0 ) {
519 ip2config.irq[i] = irqp[i];
520 } else {
521 ip2config.irq[i] = 0;
522 }
523 // This is a little bit of a hack. If poll_only=1 on command
524 // line back in ip2.c OR all IRQs on all specified boards are
525 // explicitly set to 0, then drop to poll only mode and override
526 // PCI or EISA interrupts. This superceeds the old hack of
527 // triggering if all interrupts were zero (like da default).
528 // Still a hack but less prone to random acts of terrorism.
529 //
530 // What we really should do, now that the IRQ default is set
531 // to -1, is to use 0 as a hard coded, do not probe.
532 //
533 // /\/\|=mhw=|\/\/
534 poll_only |= irqp[i];
535 }
536 }
537 }
538 poll_only = !poll_only;
539
540 Fip_firmware = firmware;
541 Fip_firmware_size = firmsize;
542
543 /* Announce our presence */
544 printk( KERN_INFO "%s version %s\n", pcName, pcVersion );
545
546 // ip2 can be unloaded and reloaded for no good reason
547 // we can't let that happen here or bad things happen
548 // second load hoses board but not system - fixme later
549 if (loaded) {
550 printk( KERN_INFO "Still loaded\n" );
551 return 0;
552 }
553 loaded++;
554
555 ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
556 if (!ip2_tty_driver)
557 return -ENOMEM;
558
559 /* Initialise the iiEllis subsystem. */
560 iiEllisInit();
561
562 /* Initialize arrays. */
563 memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable );
564 memset( DevTable, 0, sizeof DevTable );
565
566 /* Initialise all the boards we can find (up to the maximum). */
567 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
568 switch ( ip2config.addr[i] ) {
569 case 0: /* skip this slot even if card is present */
570 break;
571 default: /* ISA */
572 /* ISA address must be specified */
573 if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) {
574 printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n",
575 i, ip2config.addr[i] );
576 ip2config.addr[i] = 0;
577 } else {
578 ip2config.type[i] = ISA;
579
580 /* Check for valid irq argument, set for polling if invalid */
581 if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) {
582 printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]);
583 ip2config.irq[i] = 0;// 0 is polling and is valid in that sense
584 }
585 }
586 break;
587 case PCI:
588 #ifdef CONFIG_PCI
589 {
590 int status;
591
592 pci_dev_i = pci_get_device(PCI_VENDOR_ID_COMPUTONE,
593 PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i);
594 if (pci_dev_i != NULL) {
595 unsigned int addr;
596
597 if (pci_enable_device(pci_dev_i)) {
598 printk( KERN_ERR "IP2: can't enable PCI device at %s\n",
599 pci_name(pci_dev_i));
600 break;
601 }
602 ip2config.type[i] = PCI;
603 ip2config.pci_dev[i] = pci_dev_get(pci_dev_i);
604 status =
605 pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr);
606 if ( addr & 1 ) {
607 ip2config.addr[i]=(USHORT)(addr&0xfffe);
608 } else {
609 printk( KERN_ERR "IP2: PCI I/O address error\n");
610 }
611
612 // If the PCI BIOS assigned it, lets try and use it. If we
613 // can't acquire it or it screws up, deal with it then.
614
615 // if (!is_valid_irq(pci_irq)) {
616 // printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq);
617 // pci_irq = 0;
618 // }
619 ip2config.irq[i] = pci_dev_i->irq;
620 } else { // ann error
621 ip2config.addr[i] = 0;
622 printk(KERN_ERR "IP2: PCI board %d not found\n", i);
623 }
624 }
625 #else
626 printk( KERN_ERR "IP2: PCI card specified but PCI support not\n");
627 printk( KERN_ERR "IP2: configured in this kernel.\n");
628 printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n");
629 #endif /* CONFIG_PCI */
630 break;
631 case EISA:
632 if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) {
633 /* Eisa_irq set as side effect, boo */
634 ip2config.type[i] = EISA;
635 }
636 ip2config.irq[i] = Eisa_irq;
637 break;
638 } /* switch */
639 } /* for */
640 if (pci_dev_i)
641 pci_dev_put(pci_dev_i);
642
643 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
644 if ( ip2config.addr[i] ) {
645 pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL);
646 if (pB) {
647 i2BoardPtrTable[i] = pB;
648 iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer );
649 iiReset( pB );
650 } else {
651 printk(KERN_ERR "IP2: board memory allocation error\n");
652 }
653 }
654 }
655 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
656 if ( ( pB = i2BoardPtrTable[i] ) != NULL ) {
657 iiResetDelay( pB );
658 break;
659 }
660 }
661 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
662 if ( i2BoardPtrTable[i] != NULL ) {
663 ip2_init_board( i );
664 }
665 }
666
667 ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 );
668
669 ip2_tty_driver->owner = THIS_MODULE;
670 ip2_tty_driver->name = "ttyF";
671 ip2_tty_driver->driver_name = pcDriver_name;
672 ip2_tty_driver->major = IP2_TTY_MAJOR;
673 ip2_tty_driver->minor_start = 0;
674 ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
675 ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
676 ip2_tty_driver->init_termios = tty_std_termios;
677 ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
678 ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
679 tty_set_operations(ip2_tty_driver, &ip2_ops);
680
681 ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 );
682
683 /* Register the tty devices. */
684 if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) {
685 printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err);
686 put_tty_driver(ip2_tty_driver);
687 return -EINVAL;
688 } else
689 /* Register the IPL driver. */
690 if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) {
691 printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err );
692 } else {
693 /* create the sysfs class */
694 ip2_class = class_create(THIS_MODULE, "ip2");
695 if (IS_ERR(ip2_class)) {
696 err = PTR_ERR(ip2_class);
697 goto out_chrdev;
698 }
699 }
700 /* Register the read_procmem thing */
701 if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) {
702 printk(KERN_ERR "IP2: failed to register read_procmem\n");
703 } else {
704
705 ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 );
706 /* Register the interrupt handler or poll handler, depending upon the
707 * specified interrupt.
708 */
709
710 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
711 if ( 0 == ip2config.addr[i] ) {
712 continue;
713 }
714
715 if ( NULL != ( pB = i2BoardPtrTable[i] ) ) {
716 device_create(ip2_class, NULL,
717 MKDEV(IP2_IPL_MAJOR, 4 * i),
718 "ipl%d", i);
719 device_create(ip2_class, NULL,
720 MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
721 "stat%d", i);
722
723 for ( box = 0; box < ABS_MAX_BOXES; ++box )
724 {
725 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
726 {
727 if ( pB->i2eChannelMap[box] & (1 << j) )
728 {
729 tty_register_device(ip2_tty_driver,
730 j + ABS_BIGGEST_BOX *
731 (box+i*ABS_MAX_BOXES), NULL);
732 }
733 }
734 }
735 }
736
737 if (poll_only) {
738 // Poll only forces driver to only use polling and
739 // to ignore the probed PCI or EISA interrupts.
740 ip2config.irq[i] = CIR_POLL;
741 }
742 if ( ip2config.irq[i] == CIR_POLL ) {
743 retry:
744 if (!TimerOn) {
745 PollTimer.expires = POLL_TIMEOUT;
746 add_timer ( &PollTimer );
747 TimerOn = 1;
748 printk( KERN_INFO "IP2: polling\n");
749 }
750 } else {
751 if (have_requested_irq(ip2config.irq[i]))
752 continue;
753 rc = request_irq( ip2config.irq[i], ip2_interrupt,
754 IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
755 pcName, i2BoardPtrTable[i]);
756 if (rc) {
757 printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
758 ip2config.irq[i] = CIR_POLL;
759 printk( KERN_INFO "IP2: Polling %ld/sec.\n",
760 (POLL_TIMEOUT - jiffies));
761 goto retry;
762 }
763 mark_requested_irq(ip2config.irq[i]);
764 /* Initialise the interrupt handler bottom half (aka slih). */
765 }
766 }
767 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
768 if ( i2BoardPtrTable[i] ) {
769 set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */
770 }
771 }
772 }
773 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 );
774 goto out;
775
776 out_chrdev:
777 unregister_chrdev(IP2_IPL_MAJOR, "ip2");
778 out:
779 return err;
780 }
781
782 EXPORT_SYMBOL(ip2_loadmain);
783
784 /******************************************************************************/
785 /* Function: ip2_init_board() */
786 /* Parameters: Index of board in configuration structure */
787 /* Returns: Success (0) */
788 /* */
789 /* Description: */
790 /* This function initializes the specified board. The loadware is copied to */
791 /* the board, the channel structures are initialized, and the board details */
792 /* are reported on the console. */
793 /******************************************************************************/
794 static void
795 ip2_init_board( int boardnum )
796 {
797 int i;
798 int nports = 0, nboxes = 0;
799 i2ChanStrPtr pCh;
800 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
801
802 if ( !iiInitialize ( pB ) ) {
803 printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
804 pB->i2eBase, pB->i2eError );
805 goto err_initialize;
806 }
807 printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
808 ip2config.addr[boardnum], ip2config.irq[boardnum] );
809
810 if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
811 printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
812 goto err_initialize;
813 }
814
815 if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size )
816 != II_DOWN_GOOD ) {
817 printk ( KERN_ERR "IP2: failed to download loadware\n" );
818 goto err_release_region;
819 } else {
820 printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
821 pB->i2ePom.e.porVersion,
822 pB->i2ePom.e.porRevision,
823 pB->i2ePom.e.porSubRev, pB->i2eLVersion,
824 pB->i2eLRevision, pB->i2eLSub );
825 }
826
827 switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
828
829 default:
830 printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
831 pB->i2ePom.e.porID );
832 nports = 0;
833 goto err_release_region;
834 break;
835
836 case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
837 printk ( KERN_INFO "IP2: ISA-4\n" );
838 nports = 4;
839 break;
840
841 case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
842 printk ( KERN_INFO "IP2: ISA-8 std\n" );
843 nports = 8;
844 break;
845
846 case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
847 printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
848 nports = 8;
849 break;
850
851 case POR_ID_FIIEX: /* IntelliPort IIEX */
852 {
853 int portnum = IP2_PORTS_PER_BOARD * boardnum;
854 int box;
855
856 for( box = 0; box < ABS_MAX_BOXES; ++box ) {
857 if ( pB->i2eChannelMap[box] != 0 ) {
858 ++nboxes;
859 }
860 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
861 if ( pB->i2eChannelMap[box] & 1<< i ) {
862 ++nports;
863 }
864 }
865 }
866 DevTableMem[boardnum] = pCh =
867 kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
868 if ( !pCh ) {
869 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
870 goto err_release_region;
871 }
872 if ( !i2InitChannels( pB, nports, pCh ) ) {
873 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
874 kfree ( pCh );
875 goto err_release_region;
876 }
877 pB->i2eChannelPtr = &DevTable[portnum];
878 pB->i2eChannelCnt = ABS_MOST_PORTS;
879
880 for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
881 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
882 if ( pB->i2eChannelMap[box] & (1 << i) ) {
883 DevTable[portnum + i] = pCh;
884 pCh->port_index = portnum + i;
885 pCh++;
886 }
887 }
888 }
889 printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
890 nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
891 }
892 goto ex_exit;
893 }
894 DevTableMem[boardnum] = pCh =
895 kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
896 if ( !pCh ) {
897 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
898 goto err_release_region;
899 }
900 pB->i2eChannelPtr = pCh;
901 pB->i2eChannelCnt = nports;
902 if ( !i2InitChannels( pB, nports, pCh ) ) {
903 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
904 kfree ( pCh );
905 goto err_release_region;
906 }
907 pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
908
909 for( i = 0; i < pB->i2eChannelCnt; ++i ) {
910 DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
911 pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
912 pCh++;
913 }
914 ex_exit:
915 INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh);
916 return;
917
918 err_release_region:
919 release_region(ip2config.addr[boardnum], 8);
920 err_initialize:
921 kfree ( pB );
922 i2BoardPtrTable[boardnum] = NULL;
923 return;
924 }
925
926 /******************************************************************************/
927 /* Function: find_eisa_board ( int start_slot ) */
928 /* Parameters: First slot to check */
929 /* Returns: Address of EISA IntelliPort II controller */
930 /* */
931 /* Description: */
932 /* This function searches for an EISA IntelliPort controller, starting */
933 /* from the specified slot number. If the motherboard is not identified as an */
934 /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
935 /* it returns the base address of the controller. */
936 /******************************************************************************/
937 static unsigned short
938 find_eisa_board( int start_slot )
939 {
940 int i, j;
941 unsigned int idm = 0;
942 unsigned int idp = 0;
943 unsigned int base = 0;
944 unsigned int value;
945 int setup_address;
946 int setup_irq;
947 int ismine = 0;
948
949 /*
950 * First a check for an EISA motherboard, which we do by comparing the
951 * EISA ID registers for the system board and the first couple of slots.
952 * No slot ID should match the system board ID, but on an ISA or PCI
953 * machine the odds are that an empty bus will return similar values for
954 * each slot.
955 */
956 i = 0x0c80;
957 value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
958 for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
959 j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
960 if ( value == j )
961 return 0;
962 }
963
964 /*
965 * OK, so we are inclined to believe that this is an EISA machine. Find
966 * an IntelliPort controller.
967 */
968 for( i = start_slot; i < 16; i++ ) {
969 base = i << 12;
970 idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
971 idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
972 ismine = 0;
973 if ( idm == 0x0e8e ) {
974 if ( idp == 0x0281 || idp == 0x0218 ) {
975 ismine = 1;
976 } else if ( idp == 0x0282 || idp == 0x0283 ) {
977 ismine = 3; /* Can do edge-trigger */
978 }
979 if ( ismine ) {
980 Eisa_slot = i;
981 break;
982 }
983 }
984 }
985 if ( !ismine )
986 return 0;
987
988 /* It's some sort of EISA card, but at what address is it configured? */
989
990 setup_address = base + 0xc88;
991 value = inb(base + 0xc86);
992 setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
993
994 if ( (ismine & 2) && !(value & 0x10) ) {
995 ismine = 1; /* Could be edging, but not */
996 }
997
998 if ( Eisa_irq == 0 ) {
999 Eisa_irq = setup_irq;
1000 } else if ( Eisa_irq != setup_irq ) {
1001 printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
1002 }
1003
1004 #ifdef IP2DEBUG_INIT
1005 printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
1006 base >> 12, idm, idp, setup_address);
1007 if ( Eisa_irq ) {
1008 printk(KERN_DEBUG ", Interrupt %d %s\n",
1009 setup_irq, (ismine & 2) ? "(edge)" : "(level)");
1010 } else {
1011 printk(KERN_DEBUG ", (polled)\n");
1012 }
1013 #endif
1014 return setup_address;
1015 }
1016
1017 /******************************************************************************/
1018 /* Function: set_irq() */
1019 /* Parameters: index to board in board table */
1020 /* IRQ to use */
1021 /* Returns: Success (0) */
1022 /* */
1023 /* Description: */
1024 /******************************************************************************/
1025 static void
1026 set_irq( int boardnum, int boardIrq )
1027 {
1028 unsigned char tempCommand[16];
1029 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
1030 unsigned long flags;
1031
1032 /*
1033 * Notify the boards they may generate interrupts. This is done by
1034 * sending an in-line command to channel 0 on each board. This is why
1035 * the channels have to be defined already. For each board, if the
1036 * interrupt has never been defined, we must do so NOW, directly, since
1037 * board will not send flow control or even give an interrupt until this
1038 * is done. If polling we must send 0 as the interrupt parameter.
1039 */
1040
1041 // We will get an interrupt here at the end of this function
1042
1043 iiDisableMailIrq(pB);
1044
1045 /* We build up the entire packet header. */
1046 CHANNEL_OF(tempCommand) = 0;
1047 PTYPE_OF(tempCommand) = PTYPE_INLINE;
1048 CMD_COUNT_OF(tempCommand) = 2;
1049 (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
1050 (CMD_OF(tempCommand))[1] = boardIrq;
1051 /*
1052 * Write to FIFO; don't bother to adjust fifo capacity for this, since
1053 * board will respond almost immediately after SendMail hit.
1054 */
1055 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1056 iiWriteBuf(pB, tempCommand, 4);
1057 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1058 pB->i2eUsingIrq = boardIrq;
1059 pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
1060
1061 /* Need to update number of boards before you enable mailbox int */
1062 ++i2nBoards;
1063
1064 CHANNEL_OF(tempCommand) = 0;
1065 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1066 CMD_COUNT_OF(tempCommand) = 6;
1067 (CMD_OF(tempCommand))[0] = 88; // SILO
1068 (CMD_OF(tempCommand))[1] = 64; // chars
1069 (CMD_OF(tempCommand))[2] = 32; // ms
1070
1071 (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK
1072 (CMD_OF(tempCommand))[4] = 64; // chars
1073
1074 (CMD_OF(tempCommand))[5] = 87; // HW_TEST
1075 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1076 iiWriteBuf(pB, tempCommand, 8);
1077 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1078
1079 CHANNEL_OF(tempCommand) = 0;
1080 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1081 CMD_COUNT_OF(tempCommand) = 1;
1082 (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */
1083 iiWriteBuf(pB, tempCommand, 3);
1084
1085 #ifdef XXX
1086 // enable heartbeat for test porpoises
1087 CHANNEL_OF(tempCommand) = 0;
1088 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1089 CMD_COUNT_OF(tempCommand) = 2;
1090 (CMD_OF(tempCommand))[0] = 44; /* get ping */
1091 (CMD_OF(tempCommand))[1] = 200; /* 200 ms */
1092 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1093 iiWriteBuf(pB, tempCommand, 4);
1094 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1095 #endif
1096
1097 iiEnableMailIrq(pB);
1098 iiSendPendingMail(pB);
1099 }
1100
1101 /******************************************************************************/
1102 /* Interrupt Handler Section */
1103 /******************************************************************************/
1104
1105 static inline void
1106 service_all_boards(void)
1107 {
1108 int i;
1109 i2eBordStrPtr pB;
1110
1111 /* Service every board on the list */
1112 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
1113 pB = i2BoardPtrTable[i];
1114 if ( pB ) {
1115 i2ServiceBoard( pB );
1116 }
1117 }
1118 }
1119
1120
1121 /******************************************************************************/
1122 /* Function: ip2_interrupt_bh(work) */
1123 /* Parameters: work - pointer to the board structure */
1124 /* Returns: Nothing */
1125 /* */
1126 /* Description: */
1127 /* Service the board in a bottom half interrupt handler and then */
1128 /* reenable the board's interrupts if it has an IRQ number */
1129 /* */
1130 /******************************************************************************/
1131 static void
1132 ip2_interrupt_bh(struct work_struct *work)
1133 {
1134 i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt);
1135 // pB better well be set or we have a problem! We can only get
1136 // here from the IMMEDIATE queue. Here, we process the boards.
1137 // Checking pB doesn't cost much and it saves us from the sanity checkers.
1138
1139 bh_counter++;
1140
1141 if ( pB ) {
1142 i2ServiceBoard( pB );
1143 if( pB->i2eUsingIrq ) {
1144 // Re-enable his interrupts
1145 iiEnableMailIrq(pB);
1146 }
1147 }
1148 }
1149
1150
1151 /******************************************************************************/
1152 /* Function: ip2_interrupt(int irq, void *dev_id) */
1153 /* Parameters: irq - interrupt number */
1154 /* pointer to optional device ID structure */
1155 /* Returns: Nothing */
1156 /* */
1157 /* Description: */
1158 /* */
1159 /* Our task here is simply to identify each board which needs servicing. */
1160 /* If we are queuing then, queue it to be serviced, and disable its irq */
1161 /* mask otherwise process the board directly. */
1162 /* */
1163 /* We could queue by IRQ but that just complicates things on both ends */
1164 /* with very little gain in performance (how many instructions does */
1165 /* it take to iterate on the immediate queue). */
1166 /* */
1167 /* */
1168 /******************************************************************************/
1169 static void
1170 ip2_irq_work(i2eBordStrPtr pB)
1171 {
1172 #ifdef USE_IQI
1173 if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
1174 // Disable his interrupt (will be enabled when serviced)
1175 // This is mostly to protect from reentrancy.
1176 iiDisableMailIrq(pB);
1177
1178 // Park the board on the immediate queue for processing.
1179 schedule_work(&pB->tqueue_interrupt);
1180
1181 // Make sure the immediate queue is flagged to fire.
1182 }
1183 #else
1184
1185 // We are using immediate servicing here. This sucks and can
1186 // cause all sorts of havoc with ppp and others. The failsafe
1187 // check on iiSendPendingMail could also throw a hairball.
1188
1189 i2ServiceBoard( pB );
1190
1191 #endif /* USE_IQI */
1192 }
1193
1194 static void
1195 ip2_polled_interrupt(void)
1196 {
1197 int i;
1198 i2eBordStrPtr pB;
1199 const int irq = 0;
1200
1201 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq );
1202
1203 /* Service just the boards on the list using this irq */
1204 for( i = 0; i < i2nBoards; ++i ) {
1205 pB = i2BoardPtrTable[i];
1206
1207 // Only process those boards which match our IRQ.
1208 // IRQ = 0 for polled boards, we won't poll "IRQ" boards
1209
1210 if ( pB && (pB->i2eUsingIrq == irq) ) {
1211 ip2_irq_work(pB);
1212 }
1213 }
1214
1215 ++irq_counter;
1216
1217 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1218 }
1219
1220 static irqreturn_t
1221 ip2_interrupt(int irq, void *dev_id)
1222 {
1223 i2eBordStrPtr pB = dev_id;
1224
1225 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq );
1226
1227 ip2_irq_work(pB);
1228
1229 ++irq_counter;
1230
1231 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1232 return IRQ_HANDLED;
1233 }
1234
1235 /******************************************************************************/
1236 /* Function: ip2_poll(unsigned long arg) */
1237 /* Parameters: ? */
1238 /* Returns: Nothing */
1239 /* */
1240 /* Description: */
1241 /* This function calls the library routine i2ServiceBoard for each board in */
1242 /* the board table. This is used instead of the interrupt routine when polled */
1243 /* mode is specified. */
1244 /******************************************************************************/
1245 static void
1246 ip2_poll(unsigned long arg)
1247 {
1248 ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
1249
1250 TimerOn = 0; // it's the truth but not checked in service
1251
1252 // Just polled boards, IRQ = 0 will hit all non-interrupt boards.
1253 // It will NOT poll boards handled by hard interrupts.
1254 // The issue of queued BH interrupts is handled in ip2_interrupt().
1255 ip2_polled_interrupt();
1256
1257 PollTimer.expires = POLL_TIMEOUT;
1258 add_timer( &PollTimer );
1259 TimerOn = 1;
1260
1261 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1262 }
1263
1264 static void do_input(struct work_struct *work)
1265 {
1266 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input);
1267 unsigned long flags;
1268
1269 ip2trace(CHANN, ITRC_INPUT, 21, 0 );
1270
1271 // Data input
1272 if ( pCh->pTTY != NULL ) {
1273 read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
1274 if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
1275 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1276 i2Input( pCh );
1277 } else
1278 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1279 } else {
1280 ip2trace(CHANN, ITRC_INPUT, 22, 0 );
1281
1282 i2InputFlush( pCh );
1283 }
1284 }
1285
1286 // code duplicated from n_tty (ldisc)
1287 static inline void isig(int sig, struct tty_struct *tty, int flush)
1288 {
1289 if (tty->pgrp)
1290 kill_pgrp(tty->pgrp, sig, 1);
1291 if (flush || !L_NOFLSH(tty)) {
1292 if ( tty->ldisc.flush_buffer )
1293 tty->ldisc.flush_buffer(tty);
1294 i2InputFlush( tty->driver_data );
1295 }
1296 }
1297
1298 static void do_status(struct work_struct *work)
1299 {
1300 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status);
1301 int status;
1302
1303 status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
1304
1305 ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
1306
1307 if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
1308 if ( (status & I2_BRK) ) {
1309 // code duplicated from n_tty (ldisc)
1310 if (I_IGNBRK(pCh->pTTY))
1311 goto skip_this;
1312 if (I_BRKINT(pCh->pTTY)) {
1313 isig(SIGINT, pCh->pTTY, 1);
1314 goto skip_this;
1315 }
1316 wake_up_interruptible(&pCh->pTTY->read_wait);
1317 }
1318 #ifdef NEVER_HAPPENS_AS_SETUP_XXX
1319 // and can't work because we don't know the_char
1320 // as the_char is reported on a separate path
1321 // The intelligent board does this stuff as setup
1322 {
1323 char brkf = TTY_NORMAL;
1324 unsigned char brkc = '\0';
1325 unsigned char tmp;
1326 if ( (status & I2_BRK) ) {
1327 brkf = TTY_BREAK;
1328 brkc = '\0';
1329 }
1330 else if (status & I2_PAR) {
1331 brkf = TTY_PARITY;
1332 brkc = the_char;
1333 } else if (status & I2_FRA) {
1334 brkf = TTY_FRAME;
1335 brkc = the_char;
1336 } else if (status & I2_OVR) {
1337 brkf = TTY_OVERRUN;
1338 brkc = the_char;
1339 }
1340 tmp = pCh->pTTY->real_raw;
1341 pCh->pTTY->real_raw = 0;
1342 pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
1343 pCh->pTTY->real_raw = tmp;
1344 }
1345 #endif /* NEVER_HAPPENS_AS_SETUP_XXX */
1346 }
1347 skip_this:
1348
1349 if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
1350 wake_up_interruptible(&pCh->delta_msr_wait);
1351
1352 if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
1353 if ( status & I2_DCD ) {
1354 if ( pCh->wopen ) {
1355 wake_up_interruptible ( &pCh->open_wait );
1356 }
1357 } else {
1358 if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
1359 tty_hangup( pCh->pTTY );
1360 }
1361 }
1362 }
1363 }
1364
1365 ip2trace (CHANN, ITRC_STATUS, 26, 0 );
1366 }
1367
1368 /******************************************************************************/
1369 /* Device Open/Close/Ioctl Entry Point Section */
1370 /******************************************************************************/
1371
1372 /******************************************************************************/
1373 /* Function: open_sanity_check() */
1374 /* Parameters: Pointer to tty structure */
1375 /* Pointer to file structure */
1376 /* Returns: Success or failure */
1377 /* */
1378 /* Description: */
1379 /* Verifies the structure magic numbers and cross links. */
1380 /******************************************************************************/
1381 #ifdef IP2DEBUG_OPEN
1382 static void
1383 open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
1384 {
1385 if ( pBrd->i2eValid != I2E_MAGIC ) {
1386 printk(KERN_ERR "IP2: invalid board structure\n" );
1387 } else if ( pBrd != pCh->pMyBord ) {
1388 printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
1389 pCh->pMyBord );
1390 } else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
1391 printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
1392 } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
1393 } else {
1394 printk(KERN_INFO "IP2: all pointers check out!\n" );
1395 }
1396 }
1397 #endif
1398
1399
1400 /******************************************************************************/
1401 /* Function: ip2_open() */
1402 /* Parameters: Pointer to tty structure */
1403 /* Pointer to file structure */
1404 /* Returns: Success or failure */
1405 /* */
1406 /* Description: (MANDATORY) */
1407 /* A successful device open has to run a gauntlet of checks before it */
1408 /* completes. After some sanity checking and pointer setup, the function */
1409 /* blocks until all conditions are satisfied. It then initialises the port to */
1410 /* the default characteristics and returns. */
1411 /******************************************************************************/
1412 static int
1413 ip2_open( PTTY tty, struct file *pFile )
1414 {
1415 wait_queue_t wait;
1416 int rc = 0;
1417 int do_clocal = 0;
1418 i2ChanStrPtr pCh = DevTable[tty->index];
1419
1420 ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
1421
1422 if ( pCh == NULL ) {
1423 return -ENODEV;
1424 }
1425 /* Setup pointer links in device and tty structures */
1426 pCh->pTTY = tty;
1427 tty->driver_data = pCh;
1428
1429 #ifdef IP2DEBUG_OPEN
1430 printk(KERN_DEBUG \
1431 "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
1432 tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
1433 open_sanity_check ( pCh, pCh->pMyBord );
1434 #endif
1435
1436 i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
1437 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1438 serviceOutgoingFifo( pCh->pMyBord );
1439
1440 /* Block here until the port is ready (per serial and istallion) */
1441 /*
1442 * 1. If the port is in the middle of closing wait for the completion
1443 * and then return the appropriate error.
1444 */
1445 init_waitqueue_entry(&wait, current);
1446 add_wait_queue(&pCh->close_wait, &wait);
1447 set_current_state( TASK_INTERRUPTIBLE );
1448
1449 if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
1450 if ( pCh->flags & ASYNC_CLOSING ) {
1451 schedule();
1452 }
1453 if ( tty_hung_up_p(pFile) ) {
1454 set_current_state( TASK_RUNNING );
1455 remove_wait_queue(&pCh->close_wait, &wait);
1456 return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
1457 }
1458 }
1459 set_current_state( TASK_RUNNING );
1460 remove_wait_queue(&pCh->close_wait, &wait);
1461
1462 /*
1463 * 3. Handle a non-blocking open of a normal port.
1464 */
1465 if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
1466 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1467 goto noblock;
1468 }
1469 /*
1470 * 4. Now loop waiting for the port to be free and carrier present
1471 * (if required).
1472 */
1473 if ( tty->termios->c_cflag & CLOCAL )
1474 do_clocal = 1;
1475
1476 #ifdef IP2DEBUG_OPEN
1477 printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
1478 #endif
1479
1480 ++pCh->wopen;
1481
1482 init_waitqueue_entry(&wait, current);
1483 add_wait_queue(&pCh->open_wait, &wait);
1484
1485 for(;;) {
1486 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
1487 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1488 set_current_state( TASK_INTERRUPTIBLE );
1489 serviceOutgoingFifo( pCh->pMyBord );
1490 if ( tty_hung_up_p(pFile) ) {
1491 set_current_state( TASK_RUNNING );
1492 remove_wait_queue(&pCh->open_wait, &wait);
1493 return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
1494 }
1495 if (!(pCh->flags & ASYNC_CLOSING) &&
1496 (do_clocal || (pCh->dataSetIn & I2_DCD) )) {
1497 rc = 0;
1498 break;
1499 }
1500
1501 #ifdef IP2DEBUG_OPEN
1502 printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
1503 (pCh->flags & ASYNC_CLOSING)?"True":"False");
1504 printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
1505 #endif
1506 ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
1507 (pCh->flags & ASYNC_CLOSING) );
1508 /* check for signal */
1509 if (signal_pending(current)) {
1510 rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
1511 break;
1512 }
1513 schedule();
1514 }
1515 set_current_state( TASK_RUNNING );
1516 remove_wait_queue(&pCh->open_wait, &wait);
1517
1518 --pCh->wopen; //why count?
1519
1520 ip2trace (CHANN, ITRC_OPEN, 4, 0 );
1521
1522 if (rc != 0 ) {
1523 return rc;
1524 }
1525 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1526
1527 noblock:
1528
1529 /* first open - Assign termios structure to port */
1530 if ( tty->count == 1 ) {
1531 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1532 /* Now we must send the termios settings to the loadware */
1533 set_params( pCh, NULL );
1534 }
1535
1536 /*
1537 * Now set any i2lib options. These may go away if the i2lib code ends
1538 * up rolled into the mainline.
1539 */
1540 pCh->channelOptions |= CO_NBLOCK_WRITE;
1541
1542 #ifdef IP2DEBUG_OPEN
1543 printk (KERN_DEBUG "IP2: open completed\n" );
1544 #endif
1545 serviceOutgoingFifo( pCh->pMyBord );
1546
1547 ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
1548
1549 return 0;
1550 }
1551
1552 /******************************************************************************/
1553 /* Function: ip2_close() */
1554 /* Parameters: Pointer to tty structure */
1555 /* Pointer to file structure */
1556 /* Returns: Nothing */
1557 /* */
1558 /* Description: */
1559 /* */
1560 /* */
1561 /******************************************************************************/
1562 static void
1563 ip2_close( PTTY tty, struct file *pFile )
1564 {
1565 i2ChanStrPtr pCh = tty->driver_data;
1566
1567 if ( !pCh ) {
1568 return;
1569 }
1570
1571 ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
1572
1573 #ifdef IP2DEBUG_OPEN
1574 printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
1575 #endif
1576
1577 if ( tty_hung_up_p ( pFile ) ) {
1578
1579 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
1580
1581 return;
1582 }
1583 if ( tty->count > 1 ) { /* not the last close */
1584
1585 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
1586
1587 return;
1588 }
1589 pCh->flags |= ASYNC_CLOSING; // last close actually
1590
1591 tty->closing = 1;
1592
1593 if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
1594 /*
1595 * Before we drop DTR, make sure the transmitter has completely drained.
1596 * This uses an timeout, after which the close
1597 * completes.
1598 */
1599 ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
1600 }
1601 /*
1602 * At this point we stop accepting input. Here we flush the channel
1603 * input buffer which will allow the board to send up more data. Any
1604 * additional input is tossed at interrupt/poll time.
1605 */
1606 i2InputFlush( pCh );
1607
1608 /* disable DSS reporting */
1609 i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
1610 CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1611 if ( !tty || (tty->termios->c_cflag & HUPCL) ) {
1612 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
1613 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1614 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1615 }
1616
1617 serviceOutgoingFifo ( pCh->pMyBord );
1618
1619 tty_ldisc_flush(tty);
1620 tty_driver_flush_buffer(tty);
1621 tty->closing = 0;
1622
1623 pCh->pTTY = NULL;
1624
1625 if (pCh->wopen) {
1626 if (pCh->ClosingDelay) {
1627 msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
1628 }
1629 wake_up_interruptible(&pCh->open_wait);
1630 }
1631
1632 pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1633 wake_up_interruptible(&pCh->close_wait);
1634
1635 #ifdef IP2DEBUG_OPEN
1636 DBG_CNT("ip2_close: after wakeups--");
1637 #endif
1638
1639
1640 ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
1641
1642 return;
1643 }
1644
1645 /******************************************************************************/
1646 /* Function: ip2_hangup() */
1647 /* Parameters: Pointer to tty structure */
1648 /* Returns: Nothing */
1649 /* */
1650 /* Description: */
1651 /* */
1652 /* */
1653 /******************************************************************************/
1654 static void
1655 ip2_hangup ( PTTY tty )
1656 {
1657 i2ChanStrPtr pCh = tty->driver_data;
1658
1659 if( !pCh ) {
1660 return;
1661 }
1662
1663 ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
1664
1665 ip2_flush_buffer(tty);
1666
1667 /* disable DSS reporting */
1668
1669 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
1670 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1671 if ( (tty->termios->c_cflag & HUPCL) ) {
1672 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
1673 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1674 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1675 }
1676 i2QueueCommands(PTYPE_INLINE, pCh, 1, 3,
1677 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1678 serviceOutgoingFifo ( pCh->pMyBord );
1679
1680 wake_up_interruptible ( &pCh->delta_msr_wait );
1681
1682 pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
1683 pCh->pTTY = NULL;
1684 wake_up_interruptible ( &pCh->open_wait );
1685
1686 ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
1687 }
1688
1689 /******************************************************************************/
1690 /******************************************************************************/
1691 /* Device Output Section */
1692 /******************************************************************************/
1693 /******************************************************************************/
1694
1695 /******************************************************************************/
1696 /* Function: ip2_write() */
1697 /* Parameters: Pointer to tty structure */
1698 /* Flag denoting data is in user (1) or kernel (0) space */
1699 /* Pointer to data */
1700 /* Number of bytes to write */
1701 /* Returns: Number of bytes actually written */
1702 /* */
1703 /* Description: (MANDATORY) */
1704 /* */
1705 /* */
1706 /******************************************************************************/
1707 static int
1708 ip2_write( PTTY tty, const unsigned char *pData, int count)
1709 {
1710 i2ChanStrPtr pCh = tty->driver_data;
1711 int bytesSent = 0;
1712 unsigned long flags;
1713
1714 ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
1715
1716 /* Flush out any buffered data left over from ip2_putchar() calls. */
1717 ip2_flush_chars( tty );
1718
1719 /* This is the actual move bit. Make sure it does what we need!!!!! */
1720 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1721 bytesSent = i2Output( pCh, pData, count);
1722 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1723
1724 ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
1725
1726 return bytesSent > 0 ? bytesSent : 0;
1727 }
1728
1729 /******************************************************************************/
1730 /* Function: ip2_putchar() */
1731 /* Parameters: Pointer to tty structure */
1732 /* Character to write */
1733 /* Returns: Nothing */
1734 /* */
1735 /* Description: */
1736 /* */
1737 /* */
1738 /******************************************************************************/
1739 static int
1740 ip2_putchar( PTTY tty, unsigned char ch )
1741 {
1742 i2ChanStrPtr pCh = tty->driver_data;
1743 unsigned long flags;
1744
1745 // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
1746
1747 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1748 pCh->Pbuf[pCh->Pbuf_stuff++] = ch;
1749 if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) {
1750 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1751 ip2_flush_chars( tty );
1752 } else
1753 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1754 return 1;
1755
1756 // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
1757 }
1758
1759 /******************************************************************************/
1760 /* Function: ip2_flush_chars() */
1761 /* Parameters: Pointer to tty structure */
1762 /* Returns: Nothing */
1763 /* */
1764 /* Description: */
1765 /* */
1766 /******************************************************************************/
1767 static void
1768 ip2_flush_chars( PTTY tty )
1769 {
1770 int strip;
1771 i2ChanStrPtr pCh = tty->driver_data;
1772 unsigned long flags;
1773
1774 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1775 if ( pCh->Pbuf_stuff ) {
1776
1777 // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
1778
1779 //
1780 // We may need to restart i2Output if it does not fullfill this request
1781 //
1782 strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff);
1783 if ( strip != pCh->Pbuf_stuff ) {
1784 memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
1785 }
1786 pCh->Pbuf_stuff -= strip;
1787 }
1788 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1789 }
1790
1791 /******************************************************************************/
1792 /* Function: ip2_write_room() */
1793 /* Parameters: Pointer to tty structure */
1794 /* Returns: Number of bytes that the driver can accept */
1795 /* */
1796 /* Description: */
1797 /* */
1798 /******************************************************************************/
1799 static int
1800 ip2_write_room ( PTTY tty )
1801 {
1802 int bytesFree;
1803 i2ChanStrPtr pCh = tty->driver_data;
1804 unsigned long flags;
1805
1806 read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1807 bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
1808 read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1809
1810 ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
1811
1812 return ((bytesFree > 0) ? bytesFree : 0);
1813 }
1814
1815 /******************************************************************************/
1816 /* Function: ip2_chars_in_buf() */
1817 /* Parameters: Pointer to tty structure */
1818 /* Returns: Number of bytes queued for transmission */
1819 /* */
1820 /* Description: */
1821 /* */
1822 /* */
1823 /******************************************************************************/
1824 static int
1825 ip2_chars_in_buf ( PTTY tty )
1826 {
1827 i2ChanStrPtr pCh = tty->driver_data;
1828 int rc;
1829 unsigned long flags;
1830
1831 ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
1832
1833 #ifdef IP2DEBUG_WRITE
1834 printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
1835 pCh->Obuf_char_count + pCh->Pbuf_stuff,
1836 pCh->Obuf_char_count, pCh->Pbuf_stuff );
1837 #endif
1838 read_lock_irqsave(&pCh->Obuf_spinlock, flags);
1839 rc = pCh->Obuf_char_count;
1840 read_unlock_irqrestore(&pCh->Obuf_spinlock, flags);
1841 read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1842 rc += pCh->Pbuf_stuff;
1843 read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1844 return rc;
1845 }
1846
1847 /******************************************************************************/
1848 /* Function: ip2_flush_buffer() */
1849 /* Parameters: Pointer to tty structure */
1850 /* Returns: Nothing */
1851 /* */
1852 /* Description: */
1853 /* */
1854 /* */
1855 /******************************************************************************/
1856 static void
1857 ip2_flush_buffer( PTTY tty )
1858 {
1859 i2ChanStrPtr pCh = tty->driver_data;
1860 unsigned long flags;
1861
1862 ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
1863
1864 #ifdef IP2DEBUG_WRITE
1865 printk (KERN_DEBUG "IP2: flush buffer\n" );
1866 #endif
1867 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1868 pCh->Pbuf_stuff = 0;
1869 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1870 i2FlushOutput( pCh );
1871 ip2_owake(tty);
1872
1873 ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
1874
1875 }
1876
1877 /******************************************************************************/
1878 /* Function: ip2_wait_until_sent() */
1879 /* Parameters: Pointer to tty structure */
1880 /* Timeout for wait. */
1881 /* Returns: Nothing */
1882 /* */
1883 /* Description: */
1884 /* This function is used in place of the normal tty_wait_until_sent, which */
1885 /* only waits for the driver buffers to be empty (or rather, those buffers */
1886 /* reported by chars_in_buffer) which doesn't work for IP2 due to the */
1887 /* indeterminate number of bytes buffered on the board. */
1888 /******************************************************************************/
1889 static void
1890 ip2_wait_until_sent ( PTTY tty, int timeout )
1891 {
1892 int i = jiffies;
1893 i2ChanStrPtr pCh = tty->driver_data;
1894
1895 tty_wait_until_sent(tty, timeout );
1896 if ( (i = timeout - (jiffies -i)) > 0)
1897 i2DrainOutput( pCh, i );
1898 }
1899
1900 /******************************************************************************/
1901 /******************************************************************************/
1902 /* Device Input Section */
1903 /******************************************************************************/
1904 /******************************************************************************/
1905
1906 /******************************************************************************/
1907 /* Function: ip2_throttle() */
1908 /* Parameters: Pointer to tty structure */
1909 /* Returns: Nothing */
1910 /* */
1911 /* Description: */
1912 /* */
1913 /* */
1914 /******************************************************************************/
1915 static void
1916 ip2_throttle ( PTTY tty )
1917 {
1918 i2ChanStrPtr pCh = tty->driver_data;
1919
1920 #ifdef IP2DEBUG_READ
1921 printk (KERN_DEBUG "IP2: throttle\n" );
1922 #endif
1923 /*
1924 * Signal the poll/interrupt handlers not to forward incoming data to
1925 * the line discipline. This will cause the buffers to fill up in the
1926 * library and thus cause the library routines to send the flow control
1927 * stuff.
1928 */
1929 pCh->throttled = 1;
1930 }
1931
1932 /******************************************************************************/
1933 /* Function: ip2_unthrottle() */
1934 /* Parameters: Pointer to tty structure */
1935 /* Returns: Nothing */
1936 /* */
1937 /* Description: */
1938 /* */
1939 /* */
1940 /******************************************************************************/
1941 static void
1942 ip2_unthrottle ( PTTY tty )
1943 {
1944 i2ChanStrPtr pCh = tty->driver_data;
1945 unsigned long flags;
1946
1947 #ifdef IP2DEBUG_READ
1948 printk (KERN_DEBUG "IP2: unthrottle\n" );
1949 #endif
1950
1951 /* Pass incoming data up to the line discipline again. */
1952 pCh->throttled = 0;
1953 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1954 serviceOutgoingFifo( pCh->pMyBord );
1955 read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
1956 if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
1957 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1958 #ifdef IP2DEBUG_READ
1959 printk (KERN_DEBUG "i2Input called from unthrottle\n" );
1960 #endif
1961 i2Input( pCh );
1962 } else
1963 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1964 }
1965
1966 static void
1967 ip2_start ( PTTY tty )
1968 {
1969 i2ChanStrPtr pCh = DevTable[tty->index];
1970
1971 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1972 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
1973 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
1974 #ifdef IP2DEBUG_WRITE
1975 printk (KERN_DEBUG "IP2: start tx\n" );
1976 #endif
1977 }
1978
1979 static void
1980 ip2_stop ( PTTY tty )
1981 {
1982 i2ChanStrPtr pCh = DevTable[tty->index];
1983
1984 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
1985 #ifdef IP2DEBUG_WRITE
1986 printk (KERN_DEBUG "IP2: stop tx\n" );
1987 #endif
1988 }
1989
1990 /******************************************************************************/
1991 /* Device Ioctl Section */
1992 /******************************************************************************/
1993
1994 static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
1995 {
1996 i2ChanStrPtr pCh = DevTable[tty->index];
1997 #ifdef ENABLE_DSSNOW
1998 wait_queue_t wait;
1999 #endif
2000
2001 if (pCh == NULL)
2002 return -ENODEV;
2003
2004 /*
2005 FIXME - the following code is causing a NULL pointer dereference in
2006 2.3.51 in an interrupt handler. It's suppose to prompt the board
2007 to return the DSS signal status immediately. Why doesn't it do
2008 the same thing in 2.2.14?
2009 */
2010
2011 /* This thing is still busted in the 1.2.12 driver on 2.4.x
2012 and even hoses the serial console so the oops can be trapped.
2013 /\/\|=mhw=|\/\/ */
2014
2015 #ifdef ENABLE_DSSNOW
2016 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
2017
2018 init_waitqueue_entry(&wait, current);
2019 add_wait_queue(&pCh->dss_now_wait, &wait);
2020 set_current_state( TASK_INTERRUPTIBLE );
2021
2022 serviceOutgoingFifo( pCh->pMyBord );
2023
2024 schedule();
2025
2026 set_current_state( TASK_RUNNING );
2027 remove_wait_queue(&pCh->dss_now_wait, &wait);
2028
2029 if (signal_pending(current)) {
2030 return -EINTR;
2031 }
2032 #endif
2033 return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
2034 | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
2035 | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0)
2036 | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0)
2037 | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0)
2038 | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0);
2039 }
2040
2041 static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
2042 unsigned int set, unsigned int clear)
2043 {
2044 i2ChanStrPtr pCh = DevTable[tty->index];
2045
2046 if (pCh == NULL)
2047 return -ENODEV;
2048
2049 if (set & TIOCM_RTS) {
2050 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
2051 pCh->dataSetOut |= I2_RTS;
2052 }
2053 if (set & TIOCM_DTR) {
2054 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
2055 pCh->dataSetOut |= I2_DTR;
2056 }
2057
2058 if (clear & TIOCM_RTS) {
2059 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
2060 pCh->dataSetOut &= ~I2_RTS;
2061 }
2062 if (clear & TIOCM_DTR) {
2063 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
2064 pCh->dataSetOut &= ~I2_DTR;
2065 }
2066 serviceOutgoingFifo( pCh->pMyBord );
2067 return 0;
2068 }
2069
2070 /******************************************************************************/
2071 /* Function: ip2_ioctl() */
2072 /* Parameters: Pointer to tty structure */
2073 /* Pointer to file structure */
2074 /* Command */
2075 /* Argument */
2076 /* Returns: Success or failure */
2077 /* */
2078 /* Description: */
2079 /* */
2080 /* */
2081 /******************************************************************************/
2082 static int
2083 ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
2084 {
2085 wait_queue_t wait;
2086 i2ChanStrPtr pCh = DevTable[tty->index];
2087 i2eBordStrPtr pB;
2088 struct async_icount cprev, cnow; /* kernel counter temps */
2089 struct serial_icounter_struct __user *p_cuser;
2090 int rc = 0;
2091 unsigned long flags;
2092 void __user *argp = (void __user *)arg;
2093
2094 if ( pCh == NULL )
2095 return -ENODEV;
2096
2097 pB = pCh->pMyBord;
2098
2099 ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
2100
2101 #ifdef IP2DEBUG_IOCTL
2102 printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
2103 #endif
2104
2105 switch(cmd) {
2106 case TIOCGSERIAL:
2107
2108 ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
2109
2110 rc = get_serial_info(pCh, argp);
2111 if (rc)
2112 return rc;
2113 break;
2114
2115 case TIOCSSERIAL:
2116
2117 ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
2118
2119 rc = set_serial_info(pCh, argp);
2120 if (rc)
2121 return rc;
2122 break;
2123
2124 case TCXONC:
2125 rc = tty_check_change(tty);
2126 if (rc)
2127 return rc;
2128 switch (arg) {
2129 case TCOOFF:
2130 //return -ENOIOCTLCMD;
2131 break;
2132 case TCOON:
2133 //return -ENOIOCTLCMD;
2134 break;
2135 case TCIOFF:
2136 if (STOP_CHAR(tty) != __DISABLED_CHAR) {
2137 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2138 CMD_XMIT_NOW(STOP_CHAR(tty)));
2139 }
2140 break;
2141 case TCION:
2142 if (START_CHAR(tty) != __DISABLED_CHAR) {
2143 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2144 CMD_XMIT_NOW(START_CHAR(tty)));
2145 }
2146 break;
2147 default:
2148 return -EINVAL;
2149 }
2150 return 0;
2151
2152 case TCSBRK: /* SVID version: non-zero arg --> no break */
2153 rc = tty_check_change(tty);
2154
2155 ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
2156
2157 if (!rc) {
2158 ip2_wait_until_sent(tty,0);
2159 if (!arg) {
2160 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
2161 serviceOutgoingFifo( pCh->pMyBord );
2162 }
2163 }
2164 break;
2165
2166 case TCSBRKP: /* support for POSIX tcsendbreak() */
2167 rc = tty_check_change(tty);
2168
2169 ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
2170
2171 if (!rc) {
2172 ip2_wait_until_sent(tty,0);
2173 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2174 CMD_SEND_BRK(arg ? arg*100 : 250));
2175 serviceOutgoingFifo ( pCh->pMyBord );
2176 }
2177 break;
2178
2179 case TIOCGSOFTCAR:
2180
2181 ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
2182
2183 rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
2184 if (rc)
2185 return rc;
2186 break;
2187
2188 case TIOCSSOFTCAR:
2189
2190 ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
2191
2192 rc = get_user(arg,(unsigned long __user *) argp);
2193 if (rc)
2194 return rc;
2195 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
2196 | (arg ? CLOCAL : 0));
2197
2198 break;
2199
2200 /*
2201 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask
2202 * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS
2203 * for masking). Caller should use TIOCGICOUNT to see which one it was
2204 */
2205 case TIOCMIWAIT:
2206 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2207 cprev = pCh->icount; /* note the counters on entry */
2208 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2209 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4,
2210 CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP);
2211 init_waitqueue_entry(&wait, current);
2212 add_wait_queue(&pCh->delta_msr_wait, &wait);
2213 set_current_state( TASK_INTERRUPTIBLE );
2214
2215 serviceOutgoingFifo( pCh->pMyBord );
2216 for(;;) {
2217 ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
2218
2219 schedule();
2220
2221 ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
2222
2223 /* see if a signal did it */
2224 if (signal_pending(current)) {
2225 rc = -ERESTARTSYS;
2226 break;
2227 }
2228 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2229 cnow = pCh->icount; /* atomic copy */
2230 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2231 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2232 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
2233 rc = -EIO; /* no change => rc */
2234 break;
2235 }
2236 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2237 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2238 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2239 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2240 rc = 0;
2241 break;
2242 }
2243 cprev = cnow;
2244 }
2245 set_current_state( TASK_RUNNING );
2246 remove_wait_queue(&pCh->delta_msr_wait, &wait);
2247
2248 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3,
2249 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
2250 if ( ! (pCh->flags & ASYNC_CHECK_CD)) {
2251 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
2252 }
2253 serviceOutgoingFifo( pCh->pMyBord );
2254 return rc;
2255 break;
2256
2257 /*
2258 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2259 * Return: write counters to the user passed counter struct
2260 * NB: both 1->0 and 0->1 transitions are counted except for RI where
2261 * only 0->1 is counted. The controller is quite capable of counting
2262 * both, but this done to preserve compatibility with the standard
2263 * serial driver.
2264 */
2265 case TIOCGICOUNT:
2266 ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
2267
2268 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2269 cnow = pCh->icount;
2270 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2271 p_cuser = argp;
2272 rc = put_user(cnow.cts, &p_cuser->cts);
2273 rc = put_user(cnow.dsr, &p_cuser->dsr);
2274 rc = put_user(cnow.rng, &p_cuser->rng);
2275 rc = put_user(cnow.dcd, &p_cuser->dcd);
2276 rc = put_user(cnow.rx, &p_cuser->rx);
2277 rc = put_user(cnow.tx, &p_cuser->tx);
2278 rc = put_user(cnow.frame, &p_cuser->frame);
2279 rc = put_user(cnow.overrun, &p_cuser->overrun);
2280 rc = put_user(cnow.parity, &p_cuser->parity);
2281 rc = put_user(cnow.brk, &p_cuser->brk);
2282 rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
2283 break;
2284
2285 /*
2286 * The rest are not supported by this driver. By returning -ENOIOCTLCMD they
2287 * will be passed to the line discipline for it to handle.
2288 */
2289 case TIOCSERCONFIG:
2290 case TIOCSERGWILD:
2291 case TIOCSERGETLSR:
2292 case TIOCSERSWILD:
2293 case TIOCSERGSTRUCT:
2294 case TIOCSERGETMULTI:
2295 case TIOCSERSETMULTI:
2296
2297 default:
2298 ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
2299
2300 rc = -ENOIOCTLCMD;
2301 break;
2302 }
2303
2304 ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
2305
2306 return rc;
2307 }
2308
2309 /******************************************************************************/
2310 /* Function: GetSerialInfo() */
2311 /* Parameters: Pointer to channel structure */
2312 /* Pointer to old termios structure */
2313 /* Returns: Nothing */
2314 /* */
2315 /* Description: */
2316 /* This is to support the setserial command, and requires processing of the */
2317 /* standard Linux serial structure. */
2318 /******************************************************************************/
2319 static int
2320 get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
2321 {
2322 struct serial_struct tmp;
2323
2324 memset ( &tmp, 0, sizeof(tmp) );
2325 tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
2326 if (BID_HAS_654(tmp.type)) {
2327 tmp.type = PORT_16650;
2328 } else {
2329 tmp.type = PORT_CIRRUS;
2330 }
2331 tmp.line = pCh->port_index;
2332 tmp.port = pCh->pMyBord->i2eBase;
2333 tmp.irq = ip2config.irq[pCh->port_index/64];
2334 tmp.flags = pCh->flags;
2335 tmp.baud_base = pCh->BaudBase;
2336 tmp.close_delay = pCh->ClosingDelay;
2337 tmp.closing_wait = pCh->ClosingWaitTime;
2338 tmp.custom_divisor = pCh->BaudDivisor;
2339 return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
2340 }
2341
2342 /******************************************************************************/
2343 /* Function: SetSerialInfo() */
2344 /* Parameters: Pointer to channel structure */
2345 /* Pointer to old termios structure */
2346 /* Returns: Nothing */
2347 /* */
2348 /* Description: */
2349 /* This function provides support for setserial, which uses the TIOCSSERIAL */
2350 /* ioctl. Not all setserial parameters are relevant. If the user attempts to */
2351 /* change the IRQ, address or type of the port the ioctl fails. */
2352 /******************************************************************************/
2353 static int
2354 set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
2355 {
2356 struct serial_struct ns;
2357 int old_flags, old_baud_divisor;
2358
2359 if (copy_from_user(&ns, new_info, sizeof (ns)))
2360 return -EFAULT;
2361
2362 /*
2363 * We don't allow setserial to change IRQ, board address, type or baud
2364 * base. Also line nunber as such is meaningless but we use it for our
2365 * array index so it is fixed also.
2366 */
2367 if ( (ns.irq != ip2config.irq[pCh->port_index])
2368 || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase)))
2369 || (ns.baud_base != pCh->BaudBase)
2370 || (ns.line != pCh->port_index) ) {
2371 return -EINVAL;
2372 }
2373
2374 old_flags = pCh->flags;
2375 old_baud_divisor = pCh->BaudDivisor;
2376
2377 if ( !capable(CAP_SYS_ADMIN) ) {
2378 if ( ( ns.close_delay != pCh->ClosingDelay ) ||
2379 ( (ns.flags & ~ASYNC_USR_MASK) !=
2380 (pCh->flags & ~ASYNC_USR_MASK) ) ) {
2381 return -EPERM;
2382 }
2383
2384 pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
2385 (ns.flags & ASYNC_USR_MASK);
2386 pCh->BaudDivisor = ns.custom_divisor;
2387 } else {
2388 pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
2389 (ns.flags & ASYNC_FLAGS);
2390 pCh->BaudDivisor = ns.custom_divisor;
2391 pCh->ClosingDelay = ns.close_delay * HZ/100;
2392 pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
2393 }
2394
2395 if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
2396 || (old_baud_divisor != pCh->BaudDivisor) ) {
2397 // Invalidate speed and reset parameters
2398 set_params( pCh, NULL );
2399 }
2400
2401 return 0;
2402 }
2403
2404 /******************************************************************************/
2405 /* Function: ip2_set_termios() */
2406 /* Parameters: Pointer to tty structure */
2407 /* Pointer to old termios structure */
2408 /* Returns: Nothing */
2409 /* */
2410 /* Description: */
2411 /* */
2412 /* */
2413 /******************************************************************************/
2414 static void
2415 ip2_set_termios( PTTY tty, struct ktermios *old_termios )
2416 {
2417 i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
2418
2419 #ifdef IP2DEBUG_IOCTL
2420 printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
2421 #endif
2422
2423 set_params( pCh, old_termios );
2424 }
2425
2426 /******************************************************************************/
2427 /* Function: ip2_set_line_discipline() */
2428 /* Parameters: Pointer to tty structure */
2429 /* Returns: Nothing */
2430 /* */
2431 /* Description: Does nothing */
2432 /* */
2433 /* */
2434 /******************************************************************************/
2435 static void
2436 ip2_set_line_discipline ( PTTY tty )
2437 {
2438 #ifdef IP2DEBUG_IOCTL
2439 printk (KERN_DEBUG "IP2: set line discipline\n" );
2440 #endif
2441
2442 ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
2443
2444 }
2445
2446 /******************************************************************************/
2447 /* Function: SetLine Characteristics() */
2448 /* Parameters: Pointer to channel structure */
2449 /* Returns: Nothing */
2450 /* */
2451 /* Description: */
2452 /* This routine is called to update the channel structure with the new line */
2453 /* characteristics, and send the appropriate commands to the board when they */
2454 /* change. */
2455 /******************************************************************************/
2456 static void
2457 set_params( i2ChanStrPtr pCh, struct ktermios *o_tios )
2458 {
2459 tcflag_t cflag, iflag, lflag;
2460 char stop_char, start_char;
2461 struct ktermios dummy;
2462
2463 lflag = pCh->pTTY->termios->c_lflag;
2464 cflag = pCh->pTTY->termios->c_cflag;
2465 iflag = pCh->pTTY->termios->c_iflag;
2466
2467 if (o_tios == NULL) {
2468 dummy.c_lflag = ~lflag;
2469 dummy.c_cflag = ~cflag;
2470 dummy.c_iflag = ~iflag;
2471 o_tios = &dummy;
2472 }
2473
2474 {
2475 switch ( cflag & CBAUD ) {
2476 case B0:
2477 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
2478 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
2479 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
2480 pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
2481 goto service_it;
2482 break;
2483 case B38400:
2484 /*
2485 * This is the speed that is overloaded with all the other high
2486 * speeds, depending upon the flag settings.
2487 */
2488 if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
2489 pCh->speed = CBR_57600;
2490 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
2491 pCh->speed = CBR_115200;
2492 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
2493 pCh->speed = CBR_C1;
2494 } else {
2495 pCh->speed = CBR_38400;
2496 }
2497 break;
2498 case B50: pCh->speed = CBR_50; break;
2499 case B75: pCh->speed = CBR_75; break;
2500 case B110: pCh->speed = CBR_110; break;
2501 case B134: pCh->speed = CBR_134; break;
2502 case B150: pCh->speed = CBR_150; break;
2503 case B200: pCh->speed = CBR_200; break;
2504 case B300: pCh->speed = CBR_300; break;
2505 case B600: pCh->speed = CBR_600; break;
2506 case B1200: pCh->speed = CBR_1200; break;
2507 case B1800: pCh->speed = CBR_1800; break;
2508 case B2400: pCh->speed = CBR_2400; break;
2509 case B4800: pCh->speed = CBR_4800; break;
2510 case B9600: pCh->speed = CBR_9600; break;
2511 case B19200: pCh->speed = CBR_19200; break;
2512 case B57600: pCh->speed = CBR_57600; break;
2513 case B115200: pCh->speed = CBR_115200; break;
2514 case B153600: pCh->speed = CBR_153600; break;
2515 case B230400: pCh->speed = CBR_230400; break;
2516 case B307200: pCh->speed = CBR_307200; break;
2517 case B460800: pCh->speed = CBR_460800; break;
2518 case B921600: pCh->speed = CBR_921600; break;
2519 default: pCh->speed = CBR_9600; break;
2520 }
2521 if ( pCh->speed == CBR_C1 ) {
2522 // Process the custom speed parameters.
2523 int bps = pCh->BaudBase / pCh->BaudDivisor;
2524 if ( bps == 921600 ) {
2525 pCh->speed = CBR_921600;
2526 } else {
2527 bps = bps/10;
2528 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
2529 }
2530 }
2531 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
2532
2533 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
2534 pCh->dataSetOut |= (I2_DTR | I2_RTS);
2535 }
2536 if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag))
2537 {
2538 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2539 CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
2540 }
2541 if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag))
2542 {
2543 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2544 CMD_SETPAR(
2545 (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
2546 )
2547 );
2548 }
2549 /* byte size and parity */
2550 if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag))
2551 {
2552 int datasize;
2553 switch ( cflag & CSIZE ) {
2554 case CS5: datasize = CSZ_5; break;
2555 case CS6: datasize = CSZ_6; break;
2556 case CS7: datasize = CSZ_7; break;
2557 case CS8: datasize = CSZ_8; break;
2558 default: datasize = CSZ_5; break; /* as per serial.c */
2559 }
2560 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
2561 }
2562 /* Process CTS flow control flag setting */
2563 if ( (cflag & CRTSCTS) ) {
2564 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2565 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
2566 } else {
2567 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2568 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
2569 }
2570 //
2571 // Process XON/XOFF flow control flags settings
2572 //
2573 stop_char = STOP_CHAR(pCh->pTTY);
2574 start_char = START_CHAR(pCh->pTTY);
2575
2576 //////////// can't be \000
2577 if (stop_char == __DISABLED_CHAR )
2578 {
2579 stop_char = ~__DISABLED_CHAR;
2580 }
2581 if (start_char == __DISABLED_CHAR )
2582 {
2583 start_char = ~__DISABLED_CHAR;
2584 }
2585 /////////////////////////////////
2586
2587 if ( o_tios->c_cc[VSTART] != start_char )
2588 {
2589 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
2590 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
2591 }
2592 if ( o_tios->c_cc[VSTOP] != stop_char )
2593 {
2594 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
2595 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
2596 }
2597 if (stop_char == __DISABLED_CHAR )
2598 {
2599 stop_char = ~__DISABLED_CHAR; //TEST123
2600 goto no_xoff;
2601 }
2602 if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF)))
2603 {
2604 if ( iflag & IXOFF ) { // Enable XOFF output flow control
2605 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
2606 } else { // Disable XOFF output flow control
2607 no_xoff:
2608 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
2609 }
2610 }
2611 if (start_char == __DISABLED_CHAR )
2612 {
2613 goto no_xon;
2614 }
2615 if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY)))
2616 {
2617 if ( iflag & IXON ) {
2618 if ( iflag & IXANY ) { // Enable XON/XANY output flow control
2619 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
2620 } else { // Enable XON output flow control
2621 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
2622 }
2623 } else { // Disable XON output flow control
2624 no_xon:
2625 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
2626 }
2627 }
2628 if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) )
2629 {
2630 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2631 CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
2632 }
2633 if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) )
2634 {
2635 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2636 CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
2637 }
2638
2639 if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR))
2640 ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) )
2641 {
2642 char brkrpt = 0;
2643 char parrpt = 0;
2644
2645 if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
2646 /* Ignore breaks altogether */
2647 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
2648 } else {
2649 if ( iflag & BRKINT ) {
2650 if ( iflag & PARMRK ) {
2651 brkrpt = 0x0a; // exception an inline triple
2652 } else {
2653 brkrpt = 0x1a; // exception and NULL
2654 }
2655 brkrpt |= 0x04; // flush input
2656 } else {
2657 if ( iflag & PARMRK ) {
2658 brkrpt = 0x0b; //POSIX triple \0377 \0 \0
2659 } else {
2660 brkrpt = 0x01; // Null only
2661 }
2662 }
2663 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
2664 }
2665
2666 if (iflag & IGNPAR) {
2667 parrpt = 0x20;
2668 /* would be 2 for not cirrus bug */
2669 /* would be 0x20 cept for cirrus bug */
2670 } else {
2671 if ( iflag & PARMRK ) {
2672 /*
2673 * Replace error characters with 3-byte sequence (\0377,\0,char)
2674 */
2675 parrpt = 0x04 ;
2676 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
2677 } else {
2678 parrpt = 0x03;
2679 }
2680 }
2681 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
2682 }
2683 if (cflag & CLOCAL) {
2684 // Status reporting fails for DCD if this is off
2685 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
2686 pCh->flags &= ~ASYNC_CHECK_CD;
2687 } else {
2688 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
2689 pCh->flags |= ASYNC_CHECK_CD;
2690 }
2691
2692 service_it:
2693 i2DrainOutput( pCh, 100 );
2694 }
2695
2696 /******************************************************************************/
2697 /* IPL Device Section */
2698 /******************************************************************************/
2699
2700 /******************************************************************************/
2701 /* Function: ip2_ipl_read() */
2702 /* Parameters: Pointer to device inode */
2703 /* Pointer to file structure */
2704 /* Pointer to data */
2705 /* Number of bytes to read */
2706 /* Returns: Success or failure */
2707 /* */
2708 /* Description: Ugly */
2709 /* */
2710 /* */
2711 /******************************************************************************/
2712
2713 static
2714 ssize_t
2715 ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
2716 {
2717 unsigned int minor = iminor(pFile->f_path.dentry->d_inode);
2718 int rc = 0;
2719
2720 #ifdef IP2DEBUG_IPL
2721 printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
2722 #endif
2723
2724 switch( minor ) {
2725 case 0: // IPL device
2726 rc = -EINVAL;
2727 break;
2728 case 1: // Status dump
2729 rc = -EINVAL;
2730 break;
2731 case 2: // Ping device
2732 rc = -EINVAL;
2733 break;
2734 case 3: // Trace device
2735 rc = DumpTraceBuffer ( pData, count );
2736 break;
2737 case 4: // Trace device
2738 rc = DumpFifoBuffer ( pData, count );
2739 break;
2740 default:
2741 rc = -ENODEV;
2742 break;
2743 }
2744 return rc;
2745 }
2746
2747 static int
2748 DumpFifoBuffer ( char __user *pData, int count )
2749 {
2750 #ifdef DEBUG_FIFO
2751 int rc;
2752 rc = copy_to_user(pData, DBGBuf, count);
2753
2754 printk(KERN_DEBUG "Last index %d\n", I );
2755
2756 return count;
2757 #endif /* DEBUG_FIFO */
2758 return 0;
2759 }
2760
2761 static int
2762 DumpTraceBuffer ( char __user *pData, int count )
2763 {
2764 #ifdef IP2DEBUG_TRACE
2765 int rc;
2766 int dumpcount;
2767 int chunk;
2768 int *pIndex = (int __user *)pData;
2769
2770 if ( count < (sizeof(int) * 6) ) {
2771 return -EIO;
2772 }
2773 rc = put_user(tracewrap, pIndex );
2774 rc = put_user(TRACEMAX, ++pIndex );
2775 rc = put_user(tracestrip, ++pIndex );
2776 rc = put_user(tracestuff, ++pIndex );
2777 pData += sizeof(int) * 6;
2778 count -= sizeof(int) * 6;
2779
2780 dumpcount = tracestuff - tracestrip;
2781 if ( dumpcount < 0 ) {
2782 dumpcount += TRACEMAX;
2783 }
2784 if ( dumpcount > count ) {
2785 dumpcount = count;
2786 }
2787 chunk = TRACEMAX - tracestrip;
2788 if ( dumpcount > chunk ) {
2789 rc = copy_to_user(pData, &tracebuf[tracestrip],
2790 chunk * sizeof(tracebuf[0]) );
2791 pData += chunk * sizeof(tracebuf[0]);
2792 tracestrip = 0;
2793 chunk = dumpcount - chunk;
2794 } else {
2795 chunk = dumpcount;
2796 }
2797 rc = copy_to_user(pData, &tracebuf[tracestrip],
2798 chunk * sizeof(tracebuf[0]) );
2799 tracestrip += chunk;
2800 tracewrap = 0;
2801
2802 rc = put_user(tracestrip, ++pIndex );
2803 rc = put_user(tracestuff, ++pIndex );
2804
2805 return dumpcount;
2806 #else
2807 return 0;
2808 #endif
2809 }
2810
2811 /******************************************************************************/
2812 /* Function: ip2_ipl_write() */
2813 /* Parameters: */
2814 /* Pointer to file structure */
2815 /* Pointer to data */
2816 /* Number of bytes to write */
2817 /* Returns: Success or failure */
2818 /* */
2819 /* Description: */
2820 /* */
2821 /* */
2822 /******************************************************************************/
2823 static ssize_t
2824 ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
2825 {
2826 #ifdef IP2DEBUG_IPL
2827 printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
2828 #endif
2829 return 0;
2830 }
2831
2832 /******************************************************************************/
2833 /* Function: ip2_ipl_ioctl() */
2834 /* Parameters: Pointer to device inode */
2835 /* Pointer to file structure */
2836 /* Command */
2837 /* Argument */
2838 /* Returns: Success or failure */
2839 /* */
2840 /* Description: */
2841 /* */
2842 /* */
2843 /******************************************************************************/
2844 static int
2845 ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg )
2846 {
2847 unsigned int iplminor = iminor(pInode);
2848 int rc = 0;
2849 void __user *argp = (void __user *)arg;
2850 ULONG __user *pIndex = argp;
2851 i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
2852 i2ChanStrPtr pCh;
2853
2854 #ifdef IP2DEBUG_IPL
2855 printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
2856 #endif
2857
2858 switch ( iplminor ) {
2859 case 0: // IPL device
2860 rc = -EINVAL;
2861 break;
2862 case 1: // Status dump
2863 case 5:
2864 case 9:
2865 case 13:
2866 switch ( cmd ) {
2867 case 64: /* Driver - ip2stat */
2868 rc = put_user(ip2_tty_driver->refcount, pIndex++ );
2869 rc = put_user(irq_counter, pIndex++ );
2870 rc = put_user(bh_counter, pIndex++ );
2871 break;
2872
2873 case 65: /* Board - ip2stat */
2874 if ( pB ) {
2875 rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
2876 rc = put_user(inb(pB->i2eStatus),
2877 (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
2878 } else {
2879 rc = -ENODEV;
2880 }
2881 break;
2882
2883 default:
2884 if (cmd < IP2_MAX_PORTS) {
2885 pCh = DevTable[cmd];
2886 if ( pCh )
2887 {
2888 rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
2889 } else {
2890 rc = -ENODEV;
2891 }
2892 } else {
2893 rc = -EINVAL;
2894 }
2895 }
2896 break;
2897
2898 case 2: // Ping device
2899 rc = -EINVAL;
2900 break;
2901 case 3: // Trace device
2902 /*
2903 * akpm: This used to write a whole bunch of function addresses
2904 * to userspace, which generated lots of put_user() warnings.
2905 * I killed it all. Just return "success" and don't do
2906 * anything.
2907 */
2908 if (cmd == 1)
2909 rc = 0;
2910 else
2911 rc = -EINVAL;
2912 break;
2913
2914 default:
2915 rc = -ENODEV;
2916 break;
2917 }
2918 return rc;
2919 }
2920
2921 /******************************************************************************/
2922 /* Function: ip2_ipl_open() */
2923 /* Parameters: Pointer to device inode */
2924 /* Pointer to file structure */
2925 /* Returns: Success or failure */
2926 /* */
2927 /* Description: */
2928 /* */
2929 /* */
2930 /******************************************************************************/
2931 static int
2932 ip2_ipl_open( struct inode *pInode, struct file *pFile )
2933 {
2934 unsigned int iplminor = iminor(pInode);
2935 i2eBordStrPtr pB;
2936 i2ChanStrPtr pCh;
2937
2938 #ifdef IP2DEBUG_IPL
2939 printk (KERN_DEBUG "IP2IPL: open\n" );
2940 #endif
2941
2942 switch(iplminor) {
2943 // These are the IPL devices
2944 case 0:
2945 case 4:
2946 case 8:
2947 case 12:
2948 break;
2949
2950 // These are the status devices
2951 case 1:
2952 case 5:
2953 case 9:
2954 case 13:
2955 break;
2956
2957 // These are the debug devices
2958 case 2:
2959 case 6:
2960 case 10:
2961 case 14:
2962 pB = i2BoardPtrTable[iplminor / 4];
2963 pCh = (i2ChanStrPtr) pB->i2eChannelPtr;
2964 break;
2965
2966 // This is the trace device
2967 case 3:
2968 break;
2969 }
2970 return 0;
2971 }
2972
2973 static int
2974 proc_ip2mem_show(struct seq_file *m, void *v)
2975 {
2976 i2eBordStrPtr pB;
2977 i2ChanStrPtr pCh;
2978 PTTY tty;
2979 int i;
2980
2981 #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n"
2982 #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n"
2983 #define FMTLIN3 " 0x%04x 0x%04x rc flow\n"
2984
2985 seq_printf(m,"\n");
2986
2987 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
2988 pB = i2BoardPtrTable[i];
2989 if ( pB ) {
2990 seq_printf(m,"board %d:\n",i);
2991 seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n",
2992 pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
2993 }
2994 }
2995
2996 seq_printf(m,"#: tty flags, port flags, cflags, iflags\n");
2997 for (i=0; i < IP2_MAX_PORTS; i++) {
2998 pCh = DevTable[i];
2999 if (pCh) {
3000 tty = pCh->pTTY;
3001 if (tty && tty->count) {
3002 seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags,
3003 tty->termios->c_cflag,tty->termios->c_iflag);
3004
3005 seq_printf(m,FMTLIN2,
3006 pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
3007 seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room);
3008 }
3009 }
3010 }
3011 return 0;
3012 }
3013
3014 static int proc_ip2mem_open(struct inode *inode, struct file *file)
3015 {
3016 return single_open(file, proc_ip2mem_show, NULL);
3017 }
3018
3019 static const struct file_operations ip2mem_proc_fops = {
3020 .owner = THIS_MODULE,
3021 .open = proc_ip2mem_open,
3022 .read = seq_read,
3023 .llseek = seq_lseek,
3024 .release = single_release,
3025 };
3026
3027 /*
3028 * This is the handler for /proc/tty/driver/ip2
3029 *
3030 * This stretch of code has been largely plagerized from at least three
3031 * different sources including ip2mkdev.c and a couple of other drivers.
3032 * The bugs are all mine. :-) =mhw=
3033 */
3034 static int ip2_read_proc(char *page, char **start, off_t off,
3035 int count, int *eof, void *data)
3036 {
3037 int i, j, box;
3038 int len = 0;
3039 int boxes = 0;
3040 int ports = 0;
3041 int tports = 0;
3042 off_t begin = 0;
3043 i2eBordStrPtr pB;
3044
3045 len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion );
3046 len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
3047 IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
3048 IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
3049
3050 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
3051 /* This need to be reset for a board by board count... */
3052 boxes = 0;
3053 pB = i2BoardPtrTable[i];
3054 if( pB ) {
3055 switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED )
3056 {
3057 case POR_ID_FIIEX:
3058 len += sprintf( page+len, "Board %d: EX ports=", i );
3059 for( box = 0; box < ABS_MAX_BOXES; ++box )
3060 {
3061 ports = 0;
3062
3063 if( pB->i2eChannelMap[box] != 0 ) ++boxes;
3064 for( j = 0; j < ABS_BIGGEST_BOX; ++j )
3065 {
3066 if( pB->i2eChannelMap[box] & 1<< j ) {
3067 ++ports;
3068 }
3069 }
3070 len += sprintf( page+len, "%d,", ports );
3071 tports += ports;
3072 }
3073
3074 --len; /* Backup over that last comma */
3075
3076 len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 );
3077 break;
3078
3079 case POR_ID_II_4:
3080 len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i );
3081 tports = ports = 4;
3082 break;
3083
3084 case POR_ID_II_8:
3085 len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i );
3086 tports = ports = 8;
3087 break;
3088
3089 case POR_ID_II_8R:
3090 len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i );
3091 tports = ports = 8;
3092 break;
3093
3094 default:
3095 len += sprintf(page+len, "Board %d: unknown", i );
3096 /* Don't try and probe for minor numbers */
3097 tports = ports = 0;
3098 }
3099
3100 } else {
3101 /* Don't try and probe for minor numbers */
3102 len += sprintf(page+len, "Board %d: vacant", i );
3103 tports = ports = 0;
3104 }
3105
3106 if( tports ) {
3107 len += sprintf(page+len, " minors=" );
3108
3109 for ( box = 0; box < ABS_MAX_BOXES; ++box )
3110 {
3111 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
3112 {
3113 if ( pB->i2eChannelMap[box] & (1 << j) )
3114 {
3115 len += sprintf (page+len,"%d,",
3116 j + ABS_BIGGEST_BOX *
3117 (box+i*ABS_MAX_BOXES));
3118 }
3119 }
3120 }
3121
3122 page[ len - 1 ] = '\n'; /* Overwrite that last comma */
3123 } else {
3124 len += sprintf (page+len,"\n" );
3125 }
3126
3127 if (len+begin > off+count)
3128 break;
3129 if (len+begin < off) {
3130 begin += len;
3131 len = 0;
3132 }
3133 }
3134
3135 if (i >= IP2_MAX_BOARDS)
3136 *eof = 1;
3137 if (off >= len+begin)
3138 return 0;
3139
3140 *start = page + (off-begin);
3141 return ((count < begin+len-off) ? count : begin+len-off);
3142 }
3143
3144 /******************************************************************************/
3145 /* Function: ip2trace() */
3146 /* Parameters: Value to add to trace buffer */
3147 /* Returns: Nothing */
3148 /* */
3149 /* Description: */
3150 /* */
3151 /* */
3152 /******************************************************************************/
3153 #ifdef IP2DEBUG_TRACE
3154 void
3155 ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
3156 {
3157 long flags;
3158 unsigned long *pCode = &codes;
3159 union ip2breadcrumb bc;
3160 i2ChanStrPtr pCh;
3161
3162
3163 tracebuf[tracestuff++] = jiffies;
3164 if ( tracestuff == TRACEMAX ) {
3165 tracestuff = 0;
3166 }
3167 if ( tracestuff == tracestrip ) {
3168 if ( ++tracestrip == TRACEMAX ) {
3169 tracestrip = 0;
3170 }
3171 ++tracewrap;
3172 }
3173
3174 bc.hdr.port = 0xff & pn;
3175 bc.hdr.cat = cat;
3176 bc.hdr.codes = (unsigned char)( codes & 0xff );
3177 bc.hdr.label = label;
3178 tracebuf[tracestuff++] = bc.value;
3179
3180 for (;;) {
3181 if ( tracestuff == TRACEMAX ) {
3182 tracestuff = 0;
3183 }
3184 if ( tracestuff == tracestrip ) {
3185 if ( ++tracestrip == TRACEMAX ) {
3186 tracestrip = 0;
3187 }
3188 ++tracewrap;
3189 }
3190
3191 if ( !codes-- )
3192 break;
3193
3194 tracebuf[tracestuff++] = *++pCode;
3195 }
3196 }
3197 #endif
3198
3199
3200 MODULE_LICENSE("GPL");
3201
3202 static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
3203 { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) },
3204 { }
3205 };
3206
3207 MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);
Linux kernel - Deliverables
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