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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 106932 byte(s)
Tag kernel26-2.6.12-alx-r9
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/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 | #include <linux/config.h> |
86 | |
87 | #include <linux/ctype.h> |
88 | #include <linux/string.h> |
89 | #include <linux/fcntl.h> |
90 | #include <linux/errno.h> |
91 | #include <linux/module.h> |
92 | #include <linux/signal.h> |
93 | #include <linux/sched.h> |
94 | #include <linux/devfs_fs_kernel.h> |
95 | #include <linux/timer.h> |
96 | #include <linux/interrupt.h> |
97 | #include <linux/pci.h> |
98 | #include <linux/mm.h> |
99 | #include <linux/slab.h> |
100 | #include <linux/major.h> |
101 | #include <linux/wait.h> |
102 | #include <linux/device.h> |
103 | |
104 | #include <linux/tty.h> |
105 | #include <linux/tty_flip.h> |
106 | #include <linux/termios.h> |
107 | #include <linux/tty_driver.h> |
108 | #include <linux/serial.h> |
109 | #include <linux/ptrace.h> |
110 | #include <linux/ioport.h> |
111 | |
112 | #include <linux/cdk.h> |
113 | #include <linux/comstats.h> |
114 | #include <linux/delay.h> |
115 | #include <linux/bitops.h> |
116 | |
117 | #include <asm/system.h> |
118 | #include <asm/io.h> |
119 | #include <asm/irq.h> |
120 | |
121 | #include <linux/vmalloc.h> |
122 | #include <linux/init.h> |
123 | #include <asm/serial.h> |
124 | |
125 | #include <asm/uaccess.h> |
126 | |
127 | #include "./ip2/ip2types.h" |
128 | #include "./ip2/ip2trace.h" |
129 | #include "./ip2/ip2ioctl.h" |
130 | #include "./ip2/ip2.h" |
131 | #include "./ip2/i2ellis.h" |
132 | #include "./ip2/i2lib.h" |
133 | |
134 | /***************** |
135 | * /proc/ip2mem * |
136 | *****************/ |
137 | |
138 | #include <linux/proc_fs.h> |
139 | |
140 | static int ip2_read_procmem(char *, char **, off_t, int); |
141 | static int ip2_read_proc(char *, char **, off_t, int, int *, void * ); |
142 | |
143 | /********************/ |
144 | /* Type Definitions */ |
145 | /********************/ |
146 | |
147 | /*************/ |
148 | /* Constants */ |
149 | /*************/ |
150 | |
151 | /* String constants to identify ourselves */ |
152 | static char *pcName = "Computone IntelliPort Plus multiport driver"; |
153 | static char *pcVersion = "1.2.14"; |
154 | |
155 | /* String constants for port names */ |
156 | static char *pcDriver_name = "ip2"; |
157 | static char *pcIpl = "ip2ipl"; |
158 | |
159 | /* Serial subtype definitions */ |
160 | #define SERIAL_TYPE_NORMAL 1 |
161 | |
162 | // cheezy kludge or genius - you decide? |
163 | int ip2_loadmain(int *, int *, unsigned char *, int); |
164 | static unsigned char *Fip_firmware; |
165 | static int Fip_firmware_size; |
166 | |
167 | /***********************/ |
168 | /* Function Prototypes */ |
169 | /***********************/ |
170 | |
171 | /* Global module entry functions */ |
172 | |
173 | /* Private (static) functions */ |
174 | static int ip2_open(PTTY, struct file *); |
175 | static void ip2_close(PTTY, struct file *); |
176 | static int ip2_write(PTTY, int, const unsigned char *, int); |
177 | static void ip2_putchar(PTTY, unsigned char); |
178 | static void ip2_flush_chars(PTTY); |
179 | static int ip2_write_room(PTTY); |
180 | static int ip2_chars_in_buf(PTTY); |
181 | static void ip2_flush_buffer(PTTY); |
182 | static int ip2_ioctl(PTTY, struct file *, UINT, ULONG); |
183 | static void ip2_set_termios(PTTY, struct termios *); |
184 | static void ip2_set_line_discipline(PTTY); |
185 | static void ip2_throttle(PTTY); |
186 | static void ip2_unthrottle(PTTY); |
187 | static void ip2_stop(PTTY); |
188 | static void ip2_start(PTTY); |
189 | static void ip2_hangup(PTTY); |
190 | static int ip2_tiocmget(struct tty_struct *tty, struct file *file); |
191 | static int ip2_tiocmset(struct tty_struct *tty, struct file *file, |
192 | unsigned int set, unsigned int clear); |
193 | |
194 | static void set_irq(int, int); |
195 | static void ip2_interrupt_bh(i2eBordStrPtr pB); |
196 | static irqreturn_t ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs); |
197 | static void ip2_poll(unsigned long arg); |
198 | static inline void service_all_boards(void); |
199 | static void do_input(void *p); |
200 | static void do_status(void *p); |
201 | |
202 | static void ip2_wait_until_sent(PTTY,int); |
203 | |
204 | static void set_params (i2ChanStrPtr, struct termios *); |
205 | static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *); |
206 | static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *); |
207 | |
208 | static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *); |
209 | static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *); |
210 | static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG); |
211 | static int ip2_ipl_open(struct inode *, struct file *); |
212 | |
213 | static int DumpTraceBuffer(char __user *, int); |
214 | static int DumpFifoBuffer( char __user *, int); |
215 | |
216 | static void ip2_init_board(int); |
217 | static unsigned short find_eisa_board(int); |
218 | |
219 | /***************/ |
220 | /* Static Data */ |
221 | /***************/ |
222 | |
223 | static struct tty_driver *ip2_tty_driver; |
224 | |
225 | /* Here, then is a table of board pointers which the interrupt routine should |
226 | * scan through to determine who it must service. |
227 | */ |
228 | static unsigned short i2nBoards; // Number of boards here |
229 | |
230 | static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS]; |
231 | |
232 | static i2ChanStrPtr DevTable[IP2_MAX_PORTS]; |
233 | //DevTableMem just used to save addresses for kfree |
234 | static void *DevTableMem[IP2_MAX_BOARDS]; |
235 | |
236 | /* This is the driver descriptor for the ip2ipl device, which is used to |
237 | * download the loadware to the boards. |
238 | */ |
239 | static struct file_operations ip2_ipl = { |
240 | .owner = THIS_MODULE, |
241 | .read = ip2_ipl_read, |
242 | .write = ip2_ipl_write, |
243 | .ioctl = ip2_ipl_ioctl, |
244 | .open = ip2_ipl_open, |
245 | }; |
246 | |
247 | static unsigned long irq_counter = 0; |
248 | static unsigned long bh_counter = 0; |
249 | |
250 | // Use immediate queue to service interrupts |
251 | #define USE_IQI |
252 | //#define USE_IQ // PCI&2.2 needs work |
253 | |
254 | /* The timer_list entry for our poll routine. If interrupt operation is not |
255 | * selected, the board is serviced periodically to see if anything needs doing. |
256 | */ |
257 | #define POLL_TIMEOUT (jiffies + 1) |
258 | static struct timer_list PollTimer = TIMER_INITIALIZER(ip2_poll, 0, 0); |
259 | static char TimerOn; |
260 | |
261 | #ifdef IP2DEBUG_TRACE |
262 | /* Trace (debug) buffer data */ |
263 | #define TRACEMAX 1000 |
264 | static unsigned long tracebuf[TRACEMAX]; |
265 | static int tracestuff; |
266 | static int tracestrip; |
267 | static int tracewrap; |
268 | #endif |
269 | |
270 | /**********/ |
271 | /* Macros */ |
272 | /**********/ |
273 | |
274 | #if defined(MODULE) && defined(IP2DEBUG_OPEN) |
275 | #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \ |
276 | tty->name,(pCh->flags),ip2_tty_driver->refcount, \ |
277 | tty->count,/*GET_USE_COUNT(module)*/0,s) |
278 | #else |
279 | #define DBG_CNT(s) |
280 | #endif |
281 | |
282 | /********/ |
283 | /* Code */ |
284 | /********/ |
285 | |
286 | #include "./ip2/i2ellis.c" /* Extremely low-level interface services */ |
287 | #include "./ip2/i2cmd.c" /* Standard loadware command definitions */ |
288 | #include "./ip2/i2lib.c" /* High level interface services */ |
289 | |
290 | /* Configuration area for modprobe */ |
291 | |
292 | MODULE_AUTHOR("Doug McNash"); |
293 | MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); |
294 | |
295 | static int poll_only = 0; |
296 | |
297 | static int Eisa_irq; |
298 | static int Eisa_slot; |
299 | |
300 | static int iindx; |
301 | static char rirqs[IP2_MAX_BOARDS]; |
302 | static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; |
303 | |
304 | /* for sysfs class support */ |
305 | static struct class_simple *ip2_class; |
306 | |
307 | // Some functions to keep track of what irq's we have |
308 | |
309 | static int __init |
310 | is_valid_irq(int irq) |
311 | { |
312 | int *i = Valid_Irqs; |
313 | |
314 | while ((*i != 0) && (*i != irq)) { |
315 | i++; |
316 | } |
317 | return (*i); |
318 | } |
319 | |
320 | static void __init |
321 | mark_requested_irq( char irq ) |
322 | { |
323 | rirqs[iindx++] = irq; |
324 | } |
325 | |
326 | #ifdef MODULE |
327 | static int __init |
328 | clear_requested_irq( char irq ) |
329 | { |
330 | int i; |
331 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
332 | if (rirqs[i] == irq) { |
333 | rirqs[i] = 0; |
334 | return 1; |
335 | } |
336 | } |
337 | return 0; |
338 | } |
339 | #endif |
340 | |
341 | static int __init |
342 | have_requested_irq( char irq ) |
343 | { |
344 | // array init to zeros so 0 irq will not be requested as a side effect |
345 | int i; |
346 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
347 | if (rirqs[i] == irq) |
348 | return 1; |
349 | } |
350 | return 0; |
351 | } |
352 | |
353 | /******************************************************************************/ |
354 | /* Function: init_module() */ |
355 | /* Parameters: None */ |
356 | /* Returns: Success (0) */ |
357 | /* */ |
358 | /* Description: */ |
359 | /* This is a required entry point for an installable module. It simply calls */ |
360 | /* the driver initialisation function and returns what it returns. */ |
361 | /******************************************************************************/ |
362 | #ifdef MODULE |
363 | int |
364 | init_module(void) |
365 | { |
366 | #ifdef IP2DEBUG_INIT |
367 | printk (KERN_DEBUG "Loading module ...\n" ); |
368 | #endif |
369 | return 0; |
370 | } |
371 | #endif /* MODULE */ |
372 | |
373 | /******************************************************************************/ |
374 | /* Function: cleanup_module() */ |
375 | /* Parameters: None */ |
376 | /* Returns: Nothing */ |
377 | /* */ |
378 | /* Description: */ |
379 | /* This is a required entry point for an installable module. It has to return */ |
380 | /* the device and the driver to a passive state. It should not be necessary */ |
381 | /* to reset the board fully, especially as the loadware is downloaded */ |
382 | /* externally rather than in the driver. We just want to disable the board */ |
383 | /* and clear the loadware to a reset state. To allow this there has to be a */ |
384 | /* way to detect whether the board has the loadware running at init time to */ |
385 | /* handle subsequent installations of the driver. All memory allocated by the */ |
386 | /* driver should be returned since it may be unloaded from memory. */ |
387 | /******************************************************************************/ |
388 | #ifdef MODULE |
389 | void |
390 | cleanup_module(void) |
391 | { |
392 | int err; |
393 | int i; |
394 | |
395 | #ifdef IP2DEBUG_INIT |
396 | printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion ); |
397 | #endif |
398 | /* Stop poll timer if we had one. */ |
399 | if ( TimerOn ) { |
400 | del_timer ( &PollTimer ); |
401 | TimerOn = 0; |
402 | } |
403 | |
404 | /* Reset the boards we have. */ |
405 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
406 | if ( i2BoardPtrTable[i] ) { |
407 | iiReset( i2BoardPtrTable[i] ); |
408 | } |
409 | } |
410 | |
411 | /* The following is done at most once, if any boards were installed. */ |
412 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
413 | if ( i2BoardPtrTable[i] ) { |
414 | iiResetDelay( i2BoardPtrTable[i] ); |
415 | /* free io addresses and Tibet */ |
416 | release_region( ip2config.addr[i], 8 ); |
417 | class_simple_device_remove(MKDEV(IP2_IPL_MAJOR, 4 * i)); |
418 | devfs_remove("ip2/ipl%d", i); |
419 | class_simple_device_remove(MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); |
420 | devfs_remove("ip2/stat%d", i); |
421 | } |
422 | /* Disable and remove interrupt handler. */ |
423 | if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { |
424 | free_irq ( ip2config.irq[i], (void *)&pcName); |
425 | clear_requested_irq( ip2config.irq[i]); |
426 | } |
427 | } |
428 | class_simple_destroy(ip2_class); |
429 | devfs_remove("ip2"); |
430 | if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) { |
431 | printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); |
432 | } |
433 | put_tty_driver(ip2_tty_driver); |
434 | if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) { |
435 | printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err); |
436 | } |
437 | remove_proc_entry("ip2mem", &proc_root); |
438 | |
439 | // free memory |
440 | for (i = 0; i < IP2_MAX_BOARDS; i++) { |
441 | void *pB; |
442 | #ifdef CONFIG_PCI |
443 | if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) { |
444 | pci_disable_device(ip2config.pci_dev[i]); |
445 | ip2config.pci_dev[i] = NULL; |
446 | } |
447 | #endif |
448 | if ((pB = i2BoardPtrTable[i]) != 0 ) { |
449 | kfree ( pB ); |
450 | i2BoardPtrTable[i] = NULL; |
451 | } |
452 | if ((DevTableMem[i]) != NULL ) { |
453 | kfree ( DevTableMem[i] ); |
454 | DevTableMem[i] = NULL; |
455 | } |
456 | } |
457 | |
458 | /* Cleanup the iiEllis subsystem. */ |
459 | iiEllisCleanup(); |
460 | #ifdef IP2DEBUG_INIT |
461 | printk (KERN_DEBUG "IP2 Unloaded\n" ); |
462 | #endif |
463 | } |
464 | #endif /* MODULE */ |
465 | |
466 | static struct tty_operations ip2_ops = { |
467 | .open = ip2_open, |
468 | .close = ip2_close, |
469 | .write = ip2_write, |
470 | .put_char = ip2_putchar, |
471 | .flush_chars = ip2_flush_chars, |
472 | .write_room = ip2_write_room, |
473 | .chars_in_buffer = ip2_chars_in_buf, |
474 | .flush_buffer = ip2_flush_buffer, |
475 | .ioctl = ip2_ioctl, |
476 | .throttle = ip2_throttle, |
477 | .unthrottle = ip2_unthrottle, |
478 | .set_termios = ip2_set_termios, |
479 | .set_ldisc = ip2_set_line_discipline, |
480 | .stop = ip2_stop, |
481 | .start = ip2_start, |
482 | .hangup = ip2_hangup, |
483 | .read_proc = ip2_read_proc, |
484 | .tiocmget = ip2_tiocmget, |
485 | .tiocmset = ip2_tiocmset, |
486 | }; |
487 | |
488 | /******************************************************************************/ |
489 | /* Function: ip2_loadmain() */ |
490 | /* Parameters: irq, io from command line of insmod et. al. */ |
491 | /* pointer to fip firmware and firmware size for boards */ |
492 | /* Returns: Success (0) */ |
493 | /* */ |
494 | /* Description: */ |
495 | /* This was the required entry point for all drivers (now in ip2.c) */ |
496 | /* It performs all */ |
497 | /* initialisation of the devices and driver structures, and registers itself */ |
498 | /* with the relevant kernel modules. */ |
499 | /******************************************************************************/ |
500 | /* SA_INTERRUPT- if set blocks all interrupts else only this line */ |
501 | /* SA_SHIRQ - for shared irq PCI or maybe EISA only */ |
502 | /* SA_RANDOM - can be source for cert. random number generators */ |
503 | #define IP2_SA_FLAGS 0 |
504 | |
505 | int |
506 | ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) |
507 | { |
508 | int i, j, box; |
509 | int err = 0; |
510 | int status = 0; |
511 | static int loaded; |
512 | i2eBordStrPtr pB = NULL; |
513 | int rc = -1; |
514 | |
515 | ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 ); |
516 | |
517 | /* process command line arguments to modprobe or |
518 | insmod i.e. iop & irqp */ |
519 | /* irqp and iop should ALWAYS be specified now... But we check |
520 | them individually just to be sure, anyways... */ |
521 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
522 | if (iop) { |
523 | ip2config.addr[i] = iop[i]; |
524 | if (irqp) { |
525 | if( irqp[i] >= 0 ) { |
526 | ip2config.irq[i] = irqp[i]; |
527 | } else { |
528 | ip2config.irq[i] = 0; |
529 | } |
530 | // This is a little bit of a hack. If poll_only=1 on command |
531 | // line back in ip2.c OR all IRQs on all specified boards are |
532 | // explicitly set to 0, then drop to poll only mode and override |
533 | // PCI or EISA interrupts. This superceeds the old hack of |
534 | // triggering if all interrupts were zero (like da default). |
535 | // Still a hack but less prone to random acts of terrorism. |
536 | // |
537 | // What we really should do, now that the IRQ default is set |
538 | // to -1, is to use 0 as a hard coded, do not probe. |
539 | // |
540 | // /\/\|=mhw=|\/\/ |
541 | poll_only |= irqp[i]; |
542 | } |
543 | } |
544 | } |
545 | poll_only = !poll_only; |
546 | |
547 | Fip_firmware = firmware; |
548 | Fip_firmware_size = firmsize; |
549 | |
550 | /* Announce our presence */ |
551 | printk( KERN_INFO "%s version %s\n", pcName, pcVersion ); |
552 | |
553 | // ip2 can be unloaded and reloaded for no good reason |
554 | // we can't let that happen here or bad things happen |
555 | // second load hoses board but not system - fixme later |
556 | if (loaded) { |
557 | printk( KERN_INFO "Still loaded\n" ); |
558 | return 0; |
559 | } |
560 | loaded++; |
561 | |
562 | ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); |
563 | if (!ip2_tty_driver) |
564 | return -ENOMEM; |
565 | |
566 | /* Initialise the iiEllis subsystem. */ |
567 | iiEllisInit(); |
568 | |
569 | /* Initialize arrays. */ |
570 | memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable ); |
571 | memset( DevTable, 0, sizeof DevTable ); |
572 | |
573 | /* Initialise all the boards we can find (up to the maximum). */ |
574 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
575 | switch ( ip2config.addr[i] ) { |
576 | case 0: /* skip this slot even if card is present */ |
577 | break; |
578 | default: /* ISA */ |
579 | /* ISA address must be specified */ |
580 | if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) { |
581 | printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n", |
582 | i, ip2config.addr[i] ); |
583 | ip2config.addr[i] = 0; |
584 | } else { |
585 | ip2config.type[i] = ISA; |
586 | |
587 | /* Check for valid irq argument, set for polling if invalid */ |
588 | if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) { |
589 | printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]); |
590 | ip2config.irq[i] = 0;// 0 is polling and is valid in that sense |
591 | } |
592 | } |
593 | break; |
594 | case PCI: |
595 | #ifdef CONFIG_PCI |
596 | { |
597 | struct pci_dev *pci_dev_i = NULL; |
598 | pci_dev_i = pci_find_device(PCI_VENDOR_ID_COMPUTONE, |
599 | PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i); |
600 | if (pci_dev_i != NULL) { |
601 | unsigned int addr; |
602 | |
603 | if (pci_enable_device(pci_dev_i)) { |
604 | printk( KERN_ERR "IP2: can't enable PCI device at %s\n", |
605 | pci_name(pci_dev_i)); |
606 | break; |
607 | } |
608 | ip2config.type[i] = PCI; |
609 | ip2config.pci_dev[i] = pci_dev_i; |
610 | status = |
611 | pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr); |
612 | if ( addr & 1 ) { |
613 | ip2config.addr[i]=(USHORT)(addr&0xfffe); |
614 | } else { |
615 | printk( KERN_ERR "IP2: PCI I/O address error\n"); |
616 | } |
617 | |
618 | // If the PCI BIOS assigned it, lets try and use it. If we |
619 | // can't acquire it or it screws up, deal with it then. |
620 | |
621 | // if (!is_valid_irq(pci_irq)) { |
622 | // printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq); |
623 | // pci_irq = 0; |
624 | // } |
625 | ip2config.irq[i] = pci_dev_i->irq; |
626 | } else { // ann error |
627 | ip2config.addr[i] = 0; |
628 | if (status == PCIBIOS_DEVICE_NOT_FOUND) { |
629 | printk( KERN_ERR "IP2: PCI board %d not found\n", i ); |
630 | } else { |
631 | printk( KERN_ERR "IP2: PCI error 0x%x \n", status ); |
632 | } |
633 | } |
634 | } |
635 | #else |
636 | printk( KERN_ERR "IP2: PCI card specified but PCI support not\n"); |
637 | printk( KERN_ERR "IP2: configured in this kernel.\n"); |
638 | printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n"); |
639 | #endif /* CONFIG_PCI */ |
640 | break; |
641 | case EISA: |
642 | if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) { |
643 | /* Eisa_irq set as side effect, boo */ |
644 | ip2config.type[i] = EISA; |
645 | } |
646 | ip2config.irq[i] = Eisa_irq; |
647 | break; |
648 | } /* switch */ |
649 | } /* for */ |
650 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
651 | if ( ip2config.addr[i] ) { |
652 | pB = kmalloc( sizeof(i2eBordStr), GFP_KERNEL); |
653 | if ( pB != NULL ) { |
654 | i2BoardPtrTable[i] = pB; |
655 | memset( pB, 0, sizeof(i2eBordStr) ); |
656 | iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer ); |
657 | iiReset( pB ); |
658 | } else { |
659 | printk(KERN_ERR "IP2: board memory allocation error\n"); |
660 | } |
661 | } |
662 | } |
663 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
664 | if ( ( pB = i2BoardPtrTable[i] ) != NULL ) { |
665 | iiResetDelay( pB ); |
666 | break; |
667 | } |
668 | } |
669 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
670 | if ( i2BoardPtrTable[i] != NULL ) { |
671 | ip2_init_board( i ); |
672 | } |
673 | } |
674 | |
675 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 ); |
676 | |
677 | ip2_tty_driver->owner = THIS_MODULE; |
678 | ip2_tty_driver->name = "ttyF"; |
679 | ip2_tty_driver->devfs_name = "tts/F"; |
680 | ip2_tty_driver->driver_name = pcDriver_name; |
681 | ip2_tty_driver->major = IP2_TTY_MAJOR; |
682 | ip2_tty_driver->minor_start = 0; |
683 | ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; |
684 | ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; |
685 | ip2_tty_driver->init_termios = tty_std_termios; |
686 | ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; |
687 | ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; |
688 | tty_set_operations(ip2_tty_driver, &ip2_ops); |
689 | |
690 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); |
691 | |
692 | /* Register the tty devices. */ |
693 | if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) { |
694 | printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err); |
695 | put_tty_driver(ip2_tty_driver); |
696 | return -EINVAL; |
697 | } else |
698 | /* Register the IPL driver. */ |
699 | if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) { |
700 | printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err ); |
701 | } else { |
702 | /* create the sysfs class */ |
703 | ip2_class = class_simple_create(THIS_MODULE, "ip2"); |
704 | if (IS_ERR(ip2_class)) { |
705 | err = PTR_ERR(ip2_class); |
706 | goto out_chrdev; |
707 | } |
708 | } |
709 | /* Register the read_procmem thing */ |
710 | if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) { |
711 | printk(KERN_ERR "IP2: failed to register read_procmem\n"); |
712 | } else { |
713 | |
714 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 ); |
715 | /* Register the interrupt handler or poll handler, depending upon the |
716 | * specified interrupt. |
717 | */ |
718 | |
719 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
720 | if ( 0 == ip2config.addr[i] ) { |
721 | continue; |
722 | } |
723 | |
724 | if ( NULL != ( pB = i2BoardPtrTable[i] ) ) { |
725 | class_simple_device_add(ip2_class, MKDEV(IP2_IPL_MAJOR, |
726 | 4 * i), NULL, "ipl%d", i); |
727 | err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i), |
728 | S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, |
729 | "ip2/ipl%d", i); |
730 | if (err) { |
731 | class_simple_device_remove(MKDEV(IP2_IPL_MAJOR, |
732 | 4 * i)); |
733 | goto out_class; |
734 | } |
735 | |
736 | class_simple_device_add(ip2_class, MKDEV(IP2_IPL_MAJOR, |
737 | 4 * i + 1), NULL, "stat%d", i); |
738 | err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i + 1), |
739 | S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, |
740 | "ip2/stat%d", i); |
741 | if (err) { |
742 | class_simple_device_remove(MKDEV(IP2_IPL_MAJOR, |
743 | 4 * i + 1)); |
744 | goto out_class; |
745 | } |
746 | |
747 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) |
748 | { |
749 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) |
750 | { |
751 | if ( pB->i2eChannelMap[box] & (1 << j) ) |
752 | { |
753 | tty_register_device(ip2_tty_driver, |
754 | j + ABS_BIGGEST_BOX * |
755 | (box+i*ABS_MAX_BOXES), NULL); |
756 | } |
757 | } |
758 | } |
759 | } |
760 | |
761 | if (poll_only) { |
762 | // Poll only forces driver to only use polling and |
763 | // to ignore the probed PCI or EISA interrupts. |
764 | ip2config.irq[i] = CIR_POLL; |
765 | } |
766 | if ( ip2config.irq[i] == CIR_POLL ) { |
767 | retry: |
768 | if (!TimerOn) { |
769 | PollTimer.expires = POLL_TIMEOUT; |
770 | add_timer ( &PollTimer ); |
771 | TimerOn = 1; |
772 | printk( KERN_INFO "IP2: polling\n"); |
773 | } |
774 | } else { |
775 | if (have_requested_irq(ip2config.irq[i])) |
776 | continue; |
777 | rc = request_irq( ip2config.irq[i], ip2_interrupt, |
778 | IP2_SA_FLAGS | (ip2config.type[i] == PCI ? SA_SHIRQ : 0), |
779 | pcName, (void *)&pcName); |
780 | if (rc) { |
781 | printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc); |
782 | ip2config.irq[i] = CIR_POLL; |
783 | printk( KERN_INFO "IP2: Polling %ld/sec.\n", |
784 | (POLL_TIMEOUT - jiffies)); |
785 | goto retry; |
786 | } |
787 | mark_requested_irq(ip2config.irq[i]); |
788 | /* Initialise the interrupt handler bottom half (aka slih). */ |
789 | } |
790 | } |
791 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
792 | if ( i2BoardPtrTable[i] ) { |
793 | set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */ |
794 | } |
795 | } |
796 | } |
797 | ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 ); |
798 | goto out; |
799 | |
800 | out_class: |
801 | class_simple_destroy(ip2_class); |
802 | out_chrdev: |
803 | unregister_chrdev(IP2_IPL_MAJOR, "ip2"); |
804 | out: |
805 | return err; |
806 | } |
807 | |
808 | EXPORT_SYMBOL(ip2_loadmain); |
809 | |
810 | /******************************************************************************/ |
811 | /* Function: ip2_init_board() */ |
812 | /* Parameters: Index of board in configuration structure */ |
813 | /* Returns: Success (0) */ |
814 | /* */ |
815 | /* Description: */ |
816 | /* This function initializes the specified board. The loadware is copied to */ |
817 | /* the board, the channel structures are initialized, and the board details */ |
818 | /* are reported on the console. */ |
819 | /******************************************************************************/ |
820 | static void __init |
821 | ip2_init_board( int boardnum ) |
822 | { |
823 | int i; |
824 | int nports = 0, nboxes = 0; |
825 | i2ChanStrPtr pCh; |
826 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; |
827 | |
828 | if ( !iiInitialize ( pB ) ) { |
829 | printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", |
830 | pB->i2eBase, pB->i2eError ); |
831 | goto err_initialize; |
832 | } |
833 | printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1, |
834 | ip2config.addr[boardnum], ip2config.irq[boardnum] ); |
835 | |
836 | if (!request_region( ip2config.addr[boardnum], 8, pcName )) { |
837 | printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]); |
838 | goto err_initialize; |
839 | } |
840 | |
841 | if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size ) |
842 | != II_DOWN_GOOD ) { |
843 | printk ( KERN_ERR "IP2: failed to download loadware\n" ); |
844 | goto err_release_region; |
845 | } else { |
846 | printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n", |
847 | pB->i2ePom.e.porVersion, |
848 | pB->i2ePom.e.porRevision, |
849 | pB->i2ePom.e.porSubRev, pB->i2eLVersion, |
850 | pB->i2eLRevision, pB->i2eLSub ); |
851 | } |
852 | |
853 | switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { |
854 | |
855 | default: |
856 | printk( KERN_ERR "IP2: Unknown board type, ID = %x\n", |
857 | pB->i2ePom.e.porID ); |
858 | nports = 0; |
859 | goto err_release_region; |
860 | break; |
861 | |
862 | case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ |
863 | printk ( KERN_INFO "IP2: ISA-4\n" ); |
864 | nports = 4; |
865 | break; |
866 | |
867 | case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ |
868 | printk ( KERN_INFO "IP2: ISA-8 std\n" ); |
869 | nports = 8; |
870 | break; |
871 | |
872 | case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ |
873 | printk ( KERN_INFO "IP2: ISA-8 RJ11\n" ); |
874 | nports = 8; |
875 | break; |
876 | |
877 | case POR_ID_FIIEX: /* IntelliPort IIEX */ |
878 | { |
879 | int portnum = IP2_PORTS_PER_BOARD * boardnum; |
880 | int box; |
881 | |
882 | for( box = 0; box < ABS_MAX_BOXES; ++box ) { |
883 | if ( pB->i2eChannelMap[box] != 0 ) { |
884 | ++nboxes; |
885 | } |
886 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { |
887 | if ( pB->i2eChannelMap[box] & 1<< i ) { |
888 | ++nports; |
889 | } |
890 | } |
891 | } |
892 | DevTableMem[boardnum] = pCh = |
893 | kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); |
894 | if ( !pCh ) { |
895 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); |
896 | goto err_release_region; |
897 | } |
898 | if ( !i2InitChannels( pB, nports, pCh ) ) { |
899 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); |
900 | kfree ( pCh ); |
901 | goto err_release_region; |
902 | } |
903 | pB->i2eChannelPtr = &DevTable[portnum]; |
904 | pB->i2eChannelCnt = ABS_MOST_PORTS; |
905 | |
906 | for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { |
907 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { |
908 | if ( pB->i2eChannelMap[box] & (1 << i) ) { |
909 | DevTable[portnum + i] = pCh; |
910 | pCh->port_index = portnum + i; |
911 | pCh++; |
912 | } |
913 | } |
914 | } |
915 | printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n", |
916 | nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); |
917 | } |
918 | goto ex_exit; |
919 | } |
920 | DevTableMem[boardnum] = pCh = |
921 | kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); |
922 | if ( !pCh ) { |
923 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); |
924 | goto err_release_region; |
925 | } |
926 | pB->i2eChannelPtr = pCh; |
927 | pB->i2eChannelCnt = nports; |
928 | if ( !i2InitChannels( pB, nports, pCh ) ) { |
929 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); |
930 | kfree ( pCh ); |
931 | goto err_release_region; |
932 | } |
933 | pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; |
934 | |
935 | for( i = 0; i < pB->i2eChannelCnt; ++i ) { |
936 | DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; |
937 | pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; |
938 | pCh++; |
939 | } |
940 | ex_exit: |
941 | INIT_WORK(&pB->tqueue_interrupt, (void(*)(void*)) ip2_interrupt_bh, pB); |
942 | return; |
943 | |
944 | err_release_region: |
945 | release_region(ip2config.addr[boardnum], 8); |
946 | err_initialize: |
947 | kfree ( pB ); |
948 | i2BoardPtrTable[boardnum] = NULL; |
949 | return; |
950 | } |
951 | |
952 | /******************************************************************************/ |
953 | /* Function: find_eisa_board ( int start_slot ) */ |
954 | /* Parameters: First slot to check */ |
955 | /* Returns: Address of EISA IntelliPort II controller */ |
956 | /* */ |
957 | /* Description: */ |
958 | /* This function searches for an EISA IntelliPort controller, starting */ |
959 | /* from the specified slot number. If the motherboard is not identified as an */ |
960 | /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ |
961 | /* it returns the base address of the controller. */ |
962 | /******************************************************************************/ |
963 | static unsigned short __init |
964 | find_eisa_board( int start_slot ) |
965 | { |
966 | int i, j; |
967 | unsigned int idm = 0; |
968 | unsigned int idp = 0; |
969 | unsigned int base = 0; |
970 | unsigned int value; |
971 | int setup_address; |
972 | int setup_irq; |
973 | int ismine = 0; |
974 | |
975 | /* |
976 | * First a check for an EISA motherboard, which we do by comparing the |
977 | * EISA ID registers for the system board and the first couple of slots. |
978 | * No slot ID should match the system board ID, but on an ISA or PCI |
979 | * machine the odds are that an empty bus will return similar values for |
980 | * each slot. |
981 | */ |
982 | i = 0x0c80; |
983 | value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); |
984 | for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { |
985 | j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); |
986 | if ( value == j ) |
987 | return 0; |
988 | } |
989 | |
990 | /* |
991 | * OK, so we are inclined to believe that this is an EISA machine. Find |
992 | * an IntelliPort controller. |
993 | */ |
994 | for( i = start_slot; i < 16; i++ ) { |
995 | base = i << 12; |
996 | idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); |
997 | idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); |
998 | ismine = 0; |
999 | if ( idm == 0x0e8e ) { |
1000 | if ( idp == 0x0281 || idp == 0x0218 ) { |
1001 | ismine = 1; |
1002 | } else if ( idp == 0x0282 || idp == 0x0283 ) { |
1003 | ismine = 3; /* Can do edge-trigger */ |
1004 | } |
1005 | if ( ismine ) { |
1006 | Eisa_slot = i; |
1007 | break; |
1008 | } |
1009 | } |
1010 | } |
1011 | if ( !ismine ) |
1012 | return 0; |
1013 | |
1014 | /* It's some sort of EISA card, but at what address is it configured? */ |
1015 | |
1016 | setup_address = base + 0xc88; |
1017 | value = inb(base + 0xc86); |
1018 | setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; |
1019 | |
1020 | if ( (ismine & 2) && !(value & 0x10) ) { |
1021 | ismine = 1; /* Could be edging, but not */ |
1022 | } |
1023 | |
1024 | if ( Eisa_irq == 0 ) { |
1025 | Eisa_irq = setup_irq; |
1026 | } else if ( Eisa_irq != setup_irq ) { |
1027 | printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); |
1028 | } |
1029 | |
1030 | #ifdef IP2DEBUG_INIT |
1031 | printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", |
1032 | base >> 12, idm, idp, setup_address); |
1033 | if ( Eisa_irq ) { |
1034 | printk(KERN_DEBUG ", Interrupt %d %s\n", |
1035 | setup_irq, (ismine & 2) ? "(edge)" : "(level)"); |
1036 | } else { |
1037 | printk(KERN_DEBUG ", (polled)\n"); |
1038 | } |
1039 | #endif |
1040 | return setup_address; |
1041 | } |
1042 | |
1043 | /******************************************************************************/ |
1044 | /* Function: set_irq() */ |
1045 | /* Parameters: index to board in board table */ |
1046 | /* IRQ to use */ |
1047 | /* Returns: Success (0) */ |
1048 | /* */ |
1049 | /* Description: */ |
1050 | /******************************************************************************/ |
1051 | static void |
1052 | set_irq( int boardnum, int boardIrq ) |
1053 | { |
1054 | unsigned char tempCommand[16]; |
1055 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; |
1056 | unsigned long flags; |
1057 | |
1058 | /* |
1059 | * Notify the boards they may generate interrupts. This is done by |
1060 | * sending an in-line command to channel 0 on each board. This is why |
1061 | * the channels have to be defined already. For each board, if the |
1062 | * interrupt has never been defined, we must do so NOW, directly, since |
1063 | * board will not send flow control or even give an interrupt until this |
1064 | * is done. If polling we must send 0 as the interrupt parameter. |
1065 | */ |
1066 | |
1067 | // We will get an interrupt here at the end of this function |
1068 | |
1069 | iiDisableMailIrq(pB); |
1070 | |
1071 | /* We build up the entire packet header. */ |
1072 | CHANNEL_OF(tempCommand) = 0; |
1073 | PTYPE_OF(tempCommand) = PTYPE_INLINE; |
1074 | CMD_COUNT_OF(tempCommand) = 2; |
1075 | (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; |
1076 | (CMD_OF(tempCommand))[1] = boardIrq; |
1077 | /* |
1078 | * Write to FIFO; don't bother to adjust fifo capacity for this, since |
1079 | * board will respond almost immediately after SendMail hit. |
1080 | */ |
1081 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); |
1082 | iiWriteBuf(pB, tempCommand, 4); |
1083 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); |
1084 | pB->i2eUsingIrq = boardIrq; |
1085 | pB->i2eOutMailWaiting |= MB_OUT_STUFFED; |
1086 | |
1087 | /* Need to update number of boards before you enable mailbox int */ |
1088 | ++i2nBoards; |
1089 | |
1090 | CHANNEL_OF(tempCommand) = 0; |
1091 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; |
1092 | CMD_COUNT_OF(tempCommand) = 6; |
1093 | (CMD_OF(tempCommand))[0] = 88; // SILO |
1094 | (CMD_OF(tempCommand))[1] = 64; // chars |
1095 | (CMD_OF(tempCommand))[2] = 32; // ms |
1096 | |
1097 | (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK |
1098 | (CMD_OF(tempCommand))[4] = 64; // chars |
1099 | |
1100 | (CMD_OF(tempCommand))[5] = 87; // HW_TEST |
1101 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); |
1102 | iiWriteBuf(pB, tempCommand, 8); |
1103 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); |
1104 | |
1105 | CHANNEL_OF(tempCommand) = 0; |
1106 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; |
1107 | CMD_COUNT_OF(tempCommand) = 1; |
1108 | (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ |
1109 | iiWriteBuf(pB, tempCommand, 3); |
1110 | |
1111 | #ifdef XXX |
1112 | // enable heartbeat for test porpoises |
1113 | CHANNEL_OF(tempCommand) = 0; |
1114 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; |
1115 | CMD_COUNT_OF(tempCommand) = 2; |
1116 | (CMD_OF(tempCommand))[0] = 44; /* get ping */ |
1117 | (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ |
1118 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); |
1119 | iiWriteBuf(pB, tempCommand, 4); |
1120 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); |
1121 | #endif |
1122 | |
1123 | iiEnableMailIrq(pB); |
1124 | iiSendPendingMail(pB); |
1125 | } |
1126 | |
1127 | /******************************************************************************/ |
1128 | /* Interrupt Handler Section */ |
1129 | /******************************************************************************/ |
1130 | |
1131 | static inline void |
1132 | service_all_boards(void) |
1133 | { |
1134 | int i; |
1135 | i2eBordStrPtr pB; |
1136 | |
1137 | /* Service every board on the list */ |
1138 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
1139 | pB = i2BoardPtrTable[i]; |
1140 | if ( pB ) { |
1141 | i2ServiceBoard( pB ); |
1142 | } |
1143 | } |
1144 | } |
1145 | |
1146 | |
1147 | /******************************************************************************/ |
1148 | /* Function: ip2_interrupt_bh(pB) */ |
1149 | /* Parameters: pB - pointer to the board structure */ |
1150 | /* Returns: Nothing */ |
1151 | /* */ |
1152 | /* Description: */ |
1153 | /* Service the board in a bottom half interrupt handler and then */ |
1154 | /* reenable the board's interrupts if it has an IRQ number */ |
1155 | /* */ |
1156 | /******************************************************************************/ |
1157 | static void |
1158 | ip2_interrupt_bh(i2eBordStrPtr pB) |
1159 | { |
1160 | // pB better well be set or we have a problem! We can only get |
1161 | // here from the IMMEDIATE queue. Here, we process the boards. |
1162 | // Checking pB doesn't cost much and it saves us from the sanity checkers. |
1163 | |
1164 | bh_counter++; |
1165 | |
1166 | if ( pB ) { |
1167 | i2ServiceBoard( pB ); |
1168 | if( pB->i2eUsingIrq ) { |
1169 | // Re-enable his interrupts |
1170 | iiEnableMailIrq(pB); |
1171 | } |
1172 | } |
1173 | } |
1174 | |
1175 | |
1176 | /******************************************************************************/ |
1177 | /* Function: ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) */ |
1178 | /* Parameters: irq - interrupt number */ |
1179 | /* pointer to optional device ID structure */ |
1180 | /* pointer to register structure */ |
1181 | /* Returns: Nothing */ |
1182 | /* */ |
1183 | /* Description: */ |
1184 | /* */ |
1185 | /* Our task here is simply to identify each board which needs servicing. */ |
1186 | /* If we are queuing then, queue it to be serviced, and disable its irq */ |
1187 | /* mask otherwise process the board directly. */ |
1188 | /* */ |
1189 | /* We could queue by IRQ but that just complicates things on both ends */ |
1190 | /* with very little gain in performance (how many instructions does */ |
1191 | /* it take to iterate on the immediate queue). */ |
1192 | /* */ |
1193 | /* */ |
1194 | /******************************************************************************/ |
1195 | static irqreturn_t |
1196 | ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) |
1197 | { |
1198 | int i; |
1199 | i2eBordStrPtr pB; |
1200 | int handled = 0; |
1201 | |
1202 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq ); |
1203 | |
1204 | /* Service just the boards on the list using this irq */ |
1205 | for( i = 0; i < i2nBoards; ++i ) { |
1206 | pB = i2BoardPtrTable[i]; |
1207 | |
1208 | // Only process those boards which match our IRQ. |
1209 | // IRQ = 0 for polled boards, we won't poll "IRQ" boards |
1210 | |
1211 | if ( pB && (pB->i2eUsingIrq == irq) ) { |
1212 | handled = 1; |
1213 | #ifdef USE_IQI |
1214 | |
1215 | if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) { |
1216 | // Disable his interrupt (will be enabled when serviced) |
1217 | // This is mostly to protect from reentrancy. |
1218 | iiDisableMailIrq(pB); |
1219 | |
1220 | // Park the board on the immediate queue for processing. |
1221 | schedule_work(&pB->tqueue_interrupt); |
1222 | |
1223 | // Make sure the immediate queue is flagged to fire. |
1224 | } |
1225 | #else |
1226 | // We are using immediate servicing here. This sucks and can |
1227 | // cause all sorts of havoc with ppp and others. The failsafe |
1228 | // check on iiSendPendingMail could also throw a hairball. |
1229 | i2ServiceBoard( pB ); |
1230 | #endif /* USE_IQI */ |
1231 | } |
1232 | } |
1233 | |
1234 | ++irq_counter; |
1235 | |
1236 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); |
1237 | return IRQ_RETVAL(handled); |
1238 | } |
1239 | |
1240 | /******************************************************************************/ |
1241 | /* Function: ip2_poll(unsigned long arg) */ |
1242 | /* Parameters: ? */ |
1243 | /* Returns: Nothing */ |
1244 | /* */ |
1245 | /* Description: */ |
1246 | /* This function calls the library routine i2ServiceBoard for each board in */ |
1247 | /* the board table. This is used instead of the interrupt routine when polled */ |
1248 | /* mode is specified. */ |
1249 | /******************************************************************************/ |
1250 | static void |
1251 | ip2_poll(unsigned long arg) |
1252 | { |
1253 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); |
1254 | |
1255 | TimerOn = 0; // it's the truth but not checked in service |
1256 | |
1257 | // Just polled boards, IRQ = 0 will hit all non-interrupt boards. |
1258 | // It will NOT poll boards handled by hard interrupts. |
1259 | // The issue of queued BH interrups is handled in ip2_interrupt(). |
1260 | ip2_interrupt(0, NULL, NULL); |
1261 | |
1262 | PollTimer.expires = POLL_TIMEOUT; |
1263 | add_timer( &PollTimer ); |
1264 | TimerOn = 1; |
1265 | |
1266 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); |
1267 | } |
1268 | |
1269 | static void do_input(void *p) |
1270 | { |
1271 | i2ChanStrPtr pCh = p; |
1272 | unsigned long flags; |
1273 | |
1274 | ip2trace(CHANN, ITRC_INPUT, 21, 0 ); |
1275 | |
1276 | // Data input |
1277 | if ( pCh->pTTY != NULL ) { |
1278 | READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) |
1279 | if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { |
1280 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) |
1281 | i2Input( pCh ); |
1282 | } else |
1283 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) |
1284 | } else { |
1285 | ip2trace(CHANN, ITRC_INPUT, 22, 0 ); |
1286 | |
1287 | i2InputFlush( pCh ); |
1288 | } |
1289 | } |
1290 | |
1291 | // code duplicated from n_tty (ldisc) |
1292 | static inline void isig(int sig, struct tty_struct *tty, int flush) |
1293 | { |
1294 | if (tty->pgrp > 0) |
1295 | kill_pg(tty->pgrp, sig, 1); |
1296 | if (flush || !L_NOFLSH(tty)) { |
1297 | if ( tty->ldisc.flush_buffer ) |
1298 | tty->ldisc.flush_buffer(tty); |
1299 | i2InputFlush( tty->driver_data ); |
1300 | } |
1301 | } |
1302 | |
1303 | static void do_status(void *p) |
1304 | { |
1305 | i2ChanStrPtr pCh = p; |
1306 | int status; |
1307 | |
1308 | status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); |
1309 | |
1310 | ip2trace (CHANN, ITRC_STATUS, 21, 1, status ); |
1311 | |
1312 | if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { |
1313 | if ( (status & I2_BRK) ) { |
1314 | // code duplicated from n_tty (ldisc) |
1315 | if (I_IGNBRK(pCh->pTTY)) |
1316 | goto skip_this; |
1317 | if (I_BRKINT(pCh->pTTY)) { |
1318 | isig(SIGINT, pCh->pTTY, 1); |
1319 | goto skip_this; |
1320 | } |
1321 | wake_up_interruptible(&pCh->pTTY->read_wait); |
1322 | } |
1323 | #ifdef NEVER_HAPPENS_AS_SETUP_XXX |
1324 | // and can't work because we don't know the_char |
1325 | // as the_char is reported on a separate path |
1326 | // The intelligent board does this stuff as setup |
1327 | { |
1328 | char brkf = TTY_NORMAL; |
1329 | unsigned char brkc = '\0'; |
1330 | unsigned char tmp; |
1331 | if ( (status & I2_BRK) ) { |
1332 | brkf = TTY_BREAK; |
1333 | brkc = '\0'; |
1334 | } |
1335 | else if (status & I2_PAR) { |
1336 | brkf = TTY_PARITY; |
1337 | brkc = the_char; |
1338 | } else if (status & I2_FRA) { |
1339 | brkf = TTY_FRAME; |
1340 | brkc = the_char; |
1341 | } else if (status & I2_OVR) { |
1342 | brkf = TTY_OVERRUN; |
1343 | brkc = the_char; |
1344 | } |
1345 | tmp = pCh->pTTY->real_raw; |
1346 | pCh->pTTY->real_raw = 0; |
1347 | pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); |
1348 | pCh->pTTY->real_raw = tmp; |
1349 | } |
1350 | #endif /* NEVER_HAPPENS_AS_SETUP_XXX */ |
1351 | } |
1352 | skip_this: |
1353 | |
1354 | if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { |
1355 | wake_up_interruptible(&pCh->delta_msr_wait); |
1356 | |
1357 | if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { |
1358 | if ( status & I2_DCD ) { |
1359 | if ( pCh->wopen ) { |
1360 | wake_up_interruptible ( &pCh->open_wait ); |
1361 | } |
1362 | } else { |
1363 | if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { |
1364 | tty_hangup( pCh->pTTY ); |
1365 | } |
1366 | } |
1367 | } |
1368 | } |
1369 | |
1370 | ip2trace (CHANN, ITRC_STATUS, 26, 0 ); |
1371 | } |
1372 | |
1373 | /******************************************************************************/ |
1374 | /* Device Open/Close/Ioctl Entry Point Section */ |
1375 | /******************************************************************************/ |
1376 | |
1377 | /******************************************************************************/ |
1378 | /* Function: open_sanity_check() */ |
1379 | /* Parameters: Pointer to tty structure */ |
1380 | /* Pointer to file structure */ |
1381 | /* Returns: Success or failure */ |
1382 | /* */ |
1383 | /* Description: */ |
1384 | /* Verifies the structure magic numbers and cross links. */ |
1385 | /******************************************************************************/ |
1386 | #ifdef IP2DEBUG_OPEN |
1387 | static void |
1388 | open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) |
1389 | { |
1390 | if ( pBrd->i2eValid != I2E_MAGIC ) { |
1391 | printk(KERN_ERR "IP2: invalid board structure\n" ); |
1392 | } else if ( pBrd != pCh->pMyBord ) { |
1393 | printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", |
1394 | pCh->pMyBord ); |
1395 | } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { |
1396 | printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); |
1397 | } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { |
1398 | } else { |
1399 | printk(KERN_INFO "IP2: all pointers check out!\n" ); |
1400 | } |
1401 | } |
1402 | #endif |
1403 | |
1404 | |
1405 | /******************************************************************************/ |
1406 | /* Function: ip2_open() */ |
1407 | /* Parameters: Pointer to tty structure */ |
1408 | /* Pointer to file structure */ |
1409 | /* Returns: Success or failure */ |
1410 | /* */ |
1411 | /* Description: (MANDATORY) */ |
1412 | /* A successful device open has to run a gauntlet of checks before it */ |
1413 | /* completes. After some sanity checking and pointer setup, the function */ |
1414 | /* blocks until all conditions are satisfied. It then initialises the port to */ |
1415 | /* the default characteristics and returns. */ |
1416 | /******************************************************************************/ |
1417 | static int |
1418 | ip2_open( PTTY tty, struct file *pFile ) |
1419 | { |
1420 | wait_queue_t wait; |
1421 | int rc = 0; |
1422 | int do_clocal = 0; |
1423 | i2ChanStrPtr pCh = DevTable[tty->index]; |
1424 | |
1425 | ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 ); |
1426 | |
1427 | if ( pCh == NULL ) { |
1428 | return -ENODEV; |
1429 | } |
1430 | /* Setup pointer links in device and tty structures */ |
1431 | pCh->pTTY = tty; |
1432 | tty->driver_data = pCh; |
1433 | |
1434 | #ifdef IP2DEBUG_OPEN |
1435 | printk(KERN_DEBUG \ |
1436 | "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n", |
1437 | tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index); |
1438 | open_sanity_check ( pCh, pCh->pMyBord ); |
1439 | #endif |
1440 | |
1441 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP); |
1442 | pCh->dataSetOut |= (I2_DTR | I2_RTS); |
1443 | serviceOutgoingFifo( pCh->pMyBord ); |
1444 | |
1445 | /* Block here until the port is ready (per serial and istallion) */ |
1446 | /* |
1447 | * 1. If the port is in the middle of closing wait for the completion |
1448 | * and then return the appropriate error. |
1449 | */ |
1450 | init_waitqueue_entry(&wait, current); |
1451 | add_wait_queue(&pCh->close_wait, &wait); |
1452 | set_current_state( TASK_INTERRUPTIBLE ); |
1453 | |
1454 | if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { |
1455 | if ( pCh->flags & ASYNC_CLOSING ) { |
1456 | schedule(); |
1457 | } |
1458 | if ( tty_hung_up_p(pFile) ) { |
1459 | set_current_state( TASK_RUNNING ); |
1460 | remove_wait_queue(&pCh->close_wait, &wait); |
1461 | return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; |
1462 | } |
1463 | } |
1464 | set_current_state( TASK_RUNNING ); |
1465 | remove_wait_queue(&pCh->close_wait, &wait); |
1466 | |
1467 | /* |
1468 | * 3. Handle a non-blocking open of a normal port. |
1469 | */ |
1470 | if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) { |
1471 | pCh->flags |= ASYNC_NORMAL_ACTIVE; |
1472 | goto noblock; |
1473 | } |
1474 | /* |
1475 | * 4. Now loop waiting for the port to be free and carrier present |
1476 | * (if required). |
1477 | */ |
1478 | if ( tty->termios->c_cflag & CLOCAL ) |
1479 | do_clocal = 1; |
1480 | |
1481 | #ifdef IP2DEBUG_OPEN |
1482 | printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); |
1483 | #endif |
1484 | |
1485 | ++pCh->wopen; |
1486 | |
1487 | init_waitqueue_entry(&wait, current); |
1488 | add_wait_queue(&pCh->open_wait, &wait); |
1489 | |
1490 | for(;;) { |
1491 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); |
1492 | pCh->dataSetOut |= (I2_DTR | I2_RTS); |
1493 | set_current_state( TASK_INTERRUPTIBLE ); |
1494 | serviceOutgoingFifo( pCh->pMyBord ); |
1495 | if ( tty_hung_up_p(pFile) ) { |
1496 | set_current_state( TASK_RUNNING ); |
1497 | remove_wait_queue(&pCh->open_wait, &wait); |
1498 | return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; |
1499 | } |
1500 | if (!(pCh->flags & ASYNC_CLOSING) && |
1501 | (do_clocal || (pCh->dataSetIn & I2_DCD) )) { |
1502 | rc = 0; |
1503 | break; |
1504 | } |
1505 | |
1506 | #ifdef IP2DEBUG_OPEN |
1507 | printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", |
1508 | (pCh->flags & ASYNC_CLOSING)?"True":"False"); |
1509 | printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); |
1510 | #endif |
1511 | ip2trace (CHANN, ITRC_OPEN, 3, 2, 0, |
1512 | (pCh->flags & ASYNC_CLOSING) ); |
1513 | /* check for signal */ |
1514 | if (signal_pending(current)) { |
1515 | rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); |
1516 | break; |
1517 | } |
1518 | schedule(); |
1519 | } |
1520 | set_current_state( TASK_RUNNING ); |
1521 | remove_wait_queue(&pCh->open_wait, &wait); |
1522 | |
1523 | --pCh->wopen; //why count? |
1524 | |
1525 | ip2trace (CHANN, ITRC_OPEN, 4, 0 ); |
1526 | |
1527 | if (rc != 0 ) { |
1528 | return rc; |
1529 | } |
1530 | pCh->flags |= ASYNC_NORMAL_ACTIVE; |
1531 | |
1532 | noblock: |
1533 | |
1534 | /* first open - Assign termios structure to port */ |
1535 | if ( tty->count == 1 ) { |
1536 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); |
1537 | /* Now we must send the termios settings to the loadware */ |
1538 | set_params( pCh, NULL ); |
1539 | } |
1540 | |
1541 | /* |
1542 | * Now set any i2lib options. These may go away if the i2lib code ends |
1543 | * up rolled into the mainline. |
1544 | */ |
1545 | pCh->channelOptions |= CO_NBLOCK_WRITE; |
1546 | |
1547 | #ifdef IP2DEBUG_OPEN |
1548 | printk (KERN_DEBUG "IP2: open completed\n" ); |
1549 | #endif |
1550 | serviceOutgoingFifo( pCh->pMyBord ); |
1551 | |
1552 | ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 ); |
1553 | |
1554 | return 0; |
1555 | } |
1556 | |
1557 | /******************************************************************************/ |
1558 | /* Function: ip2_close() */ |
1559 | /* Parameters: Pointer to tty structure */ |
1560 | /* Pointer to file structure */ |
1561 | /* Returns: Nothing */ |
1562 | /* */ |
1563 | /* Description: */ |
1564 | /* */ |
1565 | /* */ |
1566 | /******************************************************************************/ |
1567 | static void |
1568 | ip2_close( PTTY tty, struct file *pFile ) |
1569 | { |
1570 | i2ChanStrPtr pCh = tty->driver_data; |
1571 | |
1572 | if ( !pCh ) { |
1573 | return; |
1574 | } |
1575 | |
1576 | ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 ); |
1577 | |
1578 | #ifdef IP2DEBUG_OPEN |
1579 | printk(KERN_DEBUG "IP2:close %s:\n",tty->name); |
1580 | #endif |
1581 | |
1582 | if ( tty_hung_up_p ( pFile ) ) { |
1583 | |
1584 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 ); |
1585 | |
1586 | return; |
1587 | } |
1588 | if ( tty->count > 1 ) { /* not the last close */ |
1589 | |
1590 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 ); |
1591 | |
1592 | return; |
1593 | } |
1594 | pCh->flags |= ASYNC_CLOSING; // last close actually |
1595 | |
1596 | tty->closing = 1; |
1597 | |
1598 | if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { |
1599 | /* |
1600 | * Before we drop DTR, make sure the transmitter has completely drained. |
1601 | * This uses an timeout, after which the close |
1602 | * completes. |
1603 | */ |
1604 | ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); |
1605 | } |
1606 | /* |
1607 | * At this point we stop accepting input. Here we flush the channel |
1608 | * input buffer which will allow the board to send up more data. Any |
1609 | * additional input is tossed at interrupt/poll time. |
1610 | */ |
1611 | i2InputFlush( pCh ); |
1612 | |
1613 | /* disable DSS reporting */ |
1614 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 4, |
1615 | CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); |
1616 | if ( !tty || (tty->termios->c_cflag & HUPCL) ) { |
1617 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); |
1618 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); |
1619 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); |
1620 | } |
1621 | |
1622 | serviceOutgoingFifo ( pCh->pMyBord ); |
1623 | |
1624 | if ( tty->driver->flush_buffer ) |
1625 | tty->driver->flush_buffer(tty); |
1626 | if ( tty->ldisc.flush_buffer ) |
1627 | tty->ldisc.flush_buffer(tty); |
1628 | tty->closing = 0; |
1629 | |
1630 | pCh->pTTY = NULL; |
1631 | |
1632 | if (pCh->wopen) { |
1633 | if (pCh->ClosingDelay) { |
1634 | msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay)); |
1635 | } |
1636 | wake_up_interruptible(&pCh->open_wait); |
1637 | } |
1638 | |
1639 | pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); |
1640 | wake_up_interruptible(&pCh->close_wait); |
1641 | |
1642 | #ifdef IP2DEBUG_OPEN |
1643 | DBG_CNT("ip2_close: after wakeups--"); |
1644 | #endif |
1645 | |
1646 | |
1647 | ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); |
1648 | |
1649 | return; |
1650 | } |
1651 | |
1652 | /******************************************************************************/ |
1653 | /* Function: ip2_hangup() */ |
1654 | /* Parameters: Pointer to tty structure */ |
1655 | /* Returns: Nothing */ |
1656 | /* */ |
1657 | /* Description: */ |
1658 | /* */ |
1659 | /* */ |
1660 | /******************************************************************************/ |
1661 | static void |
1662 | ip2_hangup ( PTTY tty ) |
1663 | { |
1664 | i2ChanStrPtr pCh = tty->driver_data; |
1665 | |
1666 | if( !pCh ) { |
1667 | return; |
1668 | } |
1669 | |
1670 | ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 ); |
1671 | |
1672 | ip2_flush_buffer(tty); |
1673 | |
1674 | /* disable DSS reporting */ |
1675 | |
1676 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); |
1677 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); |
1678 | if ( (tty->termios->c_cflag & HUPCL) ) { |
1679 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); |
1680 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); |
1681 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); |
1682 | } |
1683 | i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, |
1684 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); |
1685 | serviceOutgoingFifo ( pCh->pMyBord ); |
1686 | |
1687 | wake_up_interruptible ( &pCh->delta_msr_wait ); |
1688 | |
1689 | pCh->flags &= ~ASYNC_NORMAL_ACTIVE; |
1690 | pCh->pTTY = NULL; |
1691 | wake_up_interruptible ( &pCh->open_wait ); |
1692 | |
1693 | ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 ); |
1694 | } |
1695 | |
1696 | /******************************************************************************/ |
1697 | /******************************************************************************/ |
1698 | /* Device Output Section */ |
1699 | /******************************************************************************/ |
1700 | /******************************************************************************/ |
1701 | |
1702 | /******************************************************************************/ |
1703 | /* Function: ip2_write() */ |
1704 | /* Parameters: Pointer to tty structure */ |
1705 | /* Flag denoting data is in user (1) or kernel (0) space */ |
1706 | /* Pointer to data */ |
1707 | /* Number of bytes to write */ |
1708 | /* Returns: Number of bytes actually written */ |
1709 | /* */ |
1710 | /* Description: (MANDATORY) */ |
1711 | /* */ |
1712 | /* */ |
1713 | /******************************************************************************/ |
1714 | static int |
1715 | ip2_write( PTTY tty, int user, const unsigned char *pData, int count) |
1716 | { |
1717 | i2ChanStrPtr pCh = tty->driver_data; |
1718 | int bytesSent = 0; |
1719 | unsigned long flags; |
1720 | |
1721 | ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); |
1722 | |
1723 | /* Flush out any buffered data left over from ip2_putchar() calls. */ |
1724 | ip2_flush_chars( tty ); |
1725 | |
1726 | /* This is the actual move bit. Make sure it does what we need!!!!! */ |
1727 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); |
1728 | bytesSent = i2Output( pCh, pData, count, user ); |
1729 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1730 | |
1731 | ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); |
1732 | |
1733 | return bytesSent > 0 ? bytesSent : 0; |
1734 | } |
1735 | |
1736 | /******************************************************************************/ |
1737 | /* Function: ip2_putchar() */ |
1738 | /* Parameters: Pointer to tty structure */ |
1739 | /* Character to write */ |
1740 | /* Returns: Nothing */ |
1741 | /* */ |
1742 | /* Description: */ |
1743 | /* */ |
1744 | /* */ |
1745 | /******************************************************************************/ |
1746 | static void |
1747 | ip2_putchar( PTTY tty, unsigned char ch ) |
1748 | { |
1749 | i2ChanStrPtr pCh = tty->driver_data; |
1750 | unsigned long flags; |
1751 | |
1752 | // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); |
1753 | |
1754 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); |
1755 | pCh->Pbuf[pCh->Pbuf_stuff++] = ch; |
1756 | if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { |
1757 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1758 | ip2_flush_chars( tty ); |
1759 | } else |
1760 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1761 | |
1762 | // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); |
1763 | } |
1764 | |
1765 | /******************************************************************************/ |
1766 | /* Function: ip2_flush_chars() */ |
1767 | /* Parameters: Pointer to tty structure */ |
1768 | /* Returns: Nothing */ |
1769 | /* */ |
1770 | /* Description: */ |
1771 | /* */ |
1772 | /******************************************************************************/ |
1773 | static void |
1774 | ip2_flush_chars( PTTY tty ) |
1775 | { |
1776 | int strip; |
1777 | i2ChanStrPtr pCh = tty->driver_data; |
1778 | unsigned long flags; |
1779 | |
1780 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); |
1781 | if ( pCh->Pbuf_stuff ) { |
1782 | |
1783 | // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); |
1784 | |
1785 | // |
1786 | // We may need to restart i2Output if it does not fullfill this request |
1787 | // |
1788 | strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff, 0 ); |
1789 | if ( strip != pCh->Pbuf_stuff ) { |
1790 | memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); |
1791 | } |
1792 | pCh->Pbuf_stuff -= strip; |
1793 | } |
1794 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1795 | } |
1796 | |
1797 | /******************************************************************************/ |
1798 | /* Function: ip2_write_room() */ |
1799 | /* Parameters: Pointer to tty structure */ |
1800 | /* Returns: Number of bytes that the driver can accept */ |
1801 | /* */ |
1802 | /* Description: */ |
1803 | /* */ |
1804 | /******************************************************************************/ |
1805 | static int |
1806 | ip2_write_room ( PTTY tty ) |
1807 | { |
1808 | int bytesFree; |
1809 | i2ChanStrPtr pCh = tty->driver_data; |
1810 | unsigned long flags; |
1811 | |
1812 | READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); |
1813 | bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; |
1814 | READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1815 | |
1816 | ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); |
1817 | |
1818 | return ((bytesFree > 0) ? bytesFree : 0); |
1819 | } |
1820 | |
1821 | /******************************************************************************/ |
1822 | /* Function: ip2_chars_in_buf() */ |
1823 | /* Parameters: Pointer to tty structure */ |
1824 | /* Returns: Number of bytes queued for transmission */ |
1825 | /* */ |
1826 | /* Description: */ |
1827 | /* */ |
1828 | /* */ |
1829 | /******************************************************************************/ |
1830 | static int |
1831 | ip2_chars_in_buf ( PTTY tty ) |
1832 | { |
1833 | i2ChanStrPtr pCh = tty->driver_data; |
1834 | int rc; |
1835 | unsigned long flags; |
1836 | |
1837 | ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); |
1838 | |
1839 | #ifdef IP2DEBUG_WRITE |
1840 | printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", |
1841 | pCh->Obuf_char_count + pCh->Pbuf_stuff, |
1842 | pCh->Obuf_char_count, pCh->Pbuf_stuff ); |
1843 | #endif |
1844 | READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); |
1845 | rc = pCh->Obuf_char_count; |
1846 | READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); |
1847 | READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); |
1848 | rc += pCh->Pbuf_stuff; |
1849 | READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1850 | return rc; |
1851 | } |
1852 | |
1853 | /******************************************************************************/ |
1854 | /* Function: ip2_flush_buffer() */ |
1855 | /* Parameters: Pointer to tty structure */ |
1856 | /* Returns: Nothing */ |
1857 | /* */ |
1858 | /* Description: */ |
1859 | /* */ |
1860 | /* */ |
1861 | /******************************************************************************/ |
1862 | static void |
1863 | ip2_flush_buffer( PTTY tty ) |
1864 | { |
1865 | i2ChanStrPtr pCh = tty->driver_data; |
1866 | unsigned long flags; |
1867 | |
1868 | ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 ); |
1869 | |
1870 | #ifdef IP2DEBUG_WRITE |
1871 | printk (KERN_DEBUG "IP2: flush buffer\n" ); |
1872 | #endif |
1873 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); |
1874 | pCh->Pbuf_stuff = 0; |
1875 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1876 | i2FlushOutput( pCh ); |
1877 | ip2_owake(tty); |
1878 | |
1879 | ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 ); |
1880 | |
1881 | } |
1882 | |
1883 | /******************************************************************************/ |
1884 | /* Function: ip2_wait_until_sent() */ |
1885 | /* Parameters: Pointer to tty structure */ |
1886 | /* Timeout for wait. */ |
1887 | /* Returns: Nothing */ |
1888 | /* */ |
1889 | /* Description: */ |
1890 | /* This function is used in place of the normal tty_wait_until_sent, which */ |
1891 | /* only waits for the driver buffers to be empty (or rather, those buffers */ |
1892 | /* reported by chars_in_buffer) which doesn't work for IP2 due to the */ |
1893 | /* indeterminate number of bytes buffered on the board. */ |
1894 | /******************************************************************************/ |
1895 | static void |
1896 | ip2_wait_until_sent ( PTTY tty, int timeout ) |
1897 | { |
1898 | int i = jiffies; |
1899 | i2ChanStrPtr pCh = tty->driver_data; |
1900 | |
1901 | tty_wait_until_sent(tty, timeout ); |
1902 | if ( (i = timeout - (jiffies -i)) > 0) |
1903 | i2DrainOutput( pCh, i ); |
1904 | } |
1905 | |
1906 | /******************************************************************************/ |
1907 | /******************************************************************************/ |
1908 | /* Device Input Section */ |
1909 | /******************************************************************************/ |
1910 | /******************************************************************************/ |
1911 | |
1912 | /******************************************************************************/ |
1913 | /* Function: ip2_throttle() */ |
1914 | /* Parameters: Pointer to tty structure */ |
1915 | /* Returns: Nothing */ |
1916 | /* */ |
1917 | /* Description: */ |
1918 | /* */ |
1919 | /* */ |
1920 | /******************************************************************************/ |
1921 | static void |
1922 | ip2_throttle ( PTTY tty ) |
1923 | { |
1924 | i2ChanStrPtr pCh = tty->driver_data; |
1925 | |
1926 | #ifdef IP2DEBUG_READ |
1927 | printk (KERN_DEBUG "IP2: throttle\n" ); |
1928 | #endif |
1929 | /* |
1930 | * Signal the poll/interrupt handlers not to forward incoming data to |
1931 | * the line discipline. This will cause the buffers to fill up in the |
1932 | * library and thus cause the library routines to send the flow control |
1933 | * stuff. |
1934 | */ |
1935 | pCh->throttled = 1; |
1936 | } |
1937 | |
1938 | /******************************************************************************/ |
1939 | /* Function: ip2_unthrottle() */ |
1940 | /* Parameters: Pointer to tty structure */ |
1941 | /* Returns: Nothing */ |
1942 | /* */ |
1943 | /* Description: */ |
1944 | /* */ |
1945 | /* */ |
1946 | /******************************************************************************/ |
1947 | static void |
1948 | ip2_unthrottle ( PTTY tty ) |
1949 | { |
1950 | i2ChanStrPtr pCh = tty->driver_data; |
1951 | unsigned long flags; |
1952 | |
1953 | #ifdef IP2DEBUG_READ |
1954 | printk (KERN_DEBUG "IP2: unthrottle\n" ); |
1955 | #endif |
1956 | |
1957 | /* Pass incoming data up to the line discipline again. */ |
1958 | pCh->throttled = 0; |
1959 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); |
1960 | serviceOutgoingFifo( pCh->pMyBord ); |
1961 | READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) |
1962 | if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { |
1963 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) |
1964 | #ifdef IP2DEBUG_READ |
1965 | printk (KERN_DEBUG "i2Input called from unthrottle\n" ); |
1966 | #endif |
1967 | i2Input( pCh ); |
1968 | } else |
1969 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) |
1970 | } |
1971 | |
1972 | static void |
1973 | ip2_start ( PTTY tty ) |
1974 | { |
1975 | i2ChanStrPtr pCh = DevTable[tty->index]; |
1976 | |
1977 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); |
1978 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); |
1979 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); |
1980 | #ifdef IP2DEBUG_WRITE |
1981 | printk (KERN_DEBUG "IP2: start tx\n" ); |
1982 | #endif |
1983 | } |
1984 | |
1985 | static void |
1986 | ip2_stop ( PTTY tty ) |
1987 | { |
1988 | i2ChanStrPtr pCh = DevTable[tty->index]; |
1989 | |
1990 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); |
1991 | #ifdef IP2DEBUG_WRITE |
1992 | printk (KERN_DEBUG "IP2: stop tx\n" ); |
1993 | #endif |
1994 | } |
1995 | |
1996 | /******************************************************************************/ |
1997 | /* Device Ioctl Section */ |
1998 | /******************************************************************************/ |
1999 | |
2000 | static int ip2_tiocmget(struct tty_struct *tty, struct file *file) |
2001 | { |
2002 | i2ChanStrPtr pCh = DevTable[tty->index]; |
2003 | wait_queue_t wait; |
2004 | |
2005 | if (pCh == NULL) |
2006 | return -ENODEV; |
2007 | |
2008 | /* |
2009 | FIXME - the following code is causing a NULL pointer dereference in |
2010 | 2.3.51 in an interrupt handler. It's suppose to prompt the board |
2011 | to return the DSS signal status immediately. Why doesn't it do |
2012 | the same thing in 2.2.14? |
2013 | */ |
2014 | |
2015 | /* This thing is still busted in the 1.2.12 driver on 2.4.x |
2016 | and even hoses the serial console so the oops can be trapped. |
2017 | /\/\|=mhw=|\/\/ */ |
2018 | |
2019 | #ifdef ENABLE_DSSNOW |
2020 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW); |
2021 | |
2022 | init_waitqueue_entry(&wait, current); |
2023 | add_wait_queue(&pCh->dss_now_wait, &wait); |
2024 | set_current_state( TASK_INTERRUPTIBLE ); |
2025 | |
2026 | serviceOutgoingFifo( pCh->pMyBord ); |
2027 | |
2028 | schedule(); |
2029 | |
2030 | set_current_state( TASK_RUNNING ); |
2031 | remove_wait_queue(&pCh->dss_now_wait, &wait); |
2032 | |
2033 | if (signal_pending(current)) { |
2034 | return -EINTR; |
2035 | } |
2036 | #endif |
2037 | return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) |
2038 | | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) |
2039 | | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0) |
2040 | | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0) |
2041 | | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0) |
2042 | | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); |
2043 | } |
2044 | |
2045 | static int ip2_tiocmset(struct tty_struct *tty, struct file *file, |
2046 | unsigned int set, unsigned int clear) |
2047 | { |
2048 | i2ChanStrPtr pCh = DevTable[tty->index]; |
2049 | |
2050 | if (pCh == NULL) |
2051 | return -ENODEV; |
2052 | |
2053 | if (set & TIOCM_RTS) { |
2054 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); |
2055 | pCh->dataSetOut |= I2_RTS; |
2056 | } |
2057 | if (set & TIOCM_DTR) { |
2058 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); |
2059 | pCh->dataSetOut |= I2_DTR; |
2060 | } |
2061 | |
2062 | if (clear & TIOCM_RTS) { |
2063 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); |
2064 | pCh->dataSetOut &= ~I2_RTS; |
2065 | } |
2066 | if (clear & TIOCM_DTR) { |
2067 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); |
2068 | pCh->dataSetOut &= ~I2_DTR; |
2069 | } |
2070 | serviceOutgoingFifo( pCh->pMyBord ); |
2071 | return 0; |
2072 | } |
2073 | |
2074 | /******************************************************************************/ |
2075 | /* Function: ip2_ioctl() */ |
2076 | /* Parameters: Pointer to tty structure */ |
2077 | /* Pointer to file structure */ |
2078 | /* Command */ |
2079 | /* Argument */ |
2080 | /* Returns: Success or failure */ |
2081 | /* */ |
2082 | /* Description: */ |
2083 | /* */ |
2084 | /* */ |
2085 | /******************************************************************************/ |
2086 | static int |
2087 | ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) |
2088 | { |
2089 | wait_queue_t wait; |
2090 | i2ChanStrPtr pCh = DevTable[tty->index]; |
2091 | struct async_icount cprev, cnow; /* kernel counter temps */ |
2092 | struct serial_icounter_struct __user *p_cuser; |
2093 | int rc = 0; |
2094 | unsigned long flags; |
2095 | void __user *argp = (void __user *)arg; |
2096 | |
2097 | if ( pCh == NULL ) { |
2098 | return -ENODEV; |
2099 | } |
2100 | |
2101 | ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); |
2102 | |
2103 | #ifdef IP2DEBUG_IOCTL |
2104 | printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); |
2105 | #endif |
2106 | |
2107 | switch(cmd) { |
2108 | case TIOCGSERIAL: |
2109 | |
2110 | ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc ); |
2111 | |
2112 | rc = get_serial_info(pCh, argp); |
2113 | if (rc) |
2114 | return rc; |
2115 | break; |
2116 | |
2117 | case TIOCSSERIAL: |
2118 | |
2119 | ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc ); |
2120 | |
2121 | rc = set_serial_info(pCh, argp); |
2122 | if (rc) |
2123 | return rc; |
2124 | break; |
2125 | |
2126 | case TCXONC: |
2127 | rc = tty_check_change(tty); |
2128 | if (rc) |
2129 | return rc; |
2130 | switch (arg) { |
2131 | case TCOOFF: |
2132 | //return -ENOIOCTLCMD; |
2133 | break; |
2134 | case TCOON: |
2135 | //return -ENOIOCTLCMD; |
2136 | break; |
2137 | case TCIOFF: |
2138 | if (STOP_CHAR(tty) != __DISABLED_CHAR) { |
2139 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, |
2140 | CMD_XMIT_NOW(STOP_CHAR(tty))); |
2141 | } |
2142 | break; |
2143 | case TCION: |
2144 | if (START_CHAR(tty) != __DISABLED_CHAR) { |
2145 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, |
2146 | CMD_XMIT_NOW(START_CHAR(tty))); |
2147 | } |
2148 | break; |
2149 | default: |
2150 | return -EINVAL; |
2151 | } |
2152 | return 0; |
2153 | |
2154 | case TCSBRK: /* SVID version: non-zero arg --> no break */ |
2155 | rc = tty_check_change(tty); |
2156 | |
2157 | ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc ); |
2158 | |
2159 | if (!rc) { |
2160 | ip2_wait_until_sent(tty,0); |
2161 | if (!arg) { |
2162 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); |
2163 | serviceOutgoingFifo( pCh->pMyBord ); |
2164 | } |
2165 | } |
2166 | break; |
2167 | |
2168 | case TCSBRKP: /* support for POSIX tcsendbreak() */ |
2169 | rc = tty_check_change(tty); |
2170 | |
2171 | ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc ); |
2172 | |
2173 | if (!rc) { |
2174 | ip2_wait_until_sent(tty,0); |
2175 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, |
2176 | CMD_SEND_BRK(arg ? arg*100 : 250)); |
2177 | serviceOutgoingFifo ( pCh->pMyBord ); |
2178 | } |
2179 | break; |
2180 | |
2181 | case TIOCGSOFTCAR: |
2182 | |
2183 | ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc ); |
2184 | |
2185 | rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); |
2186 | if (rc) |
2187 | return rc; |
2188 | break; |
2189 | |
2190 | case TIOCSSOFTCAR: |
2191 | |
2192 | ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc ); |
2193 | |
2194 | rc = get_user(arg,(unsigned long __user *) argp); |
2195 | if (rc) |
2196 | return rc; |
2197 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
2198 | | (arg ? CLOCAL : 0)); |
2199 | |
2200 | break; |
2201 | |
2202 | /* |
2203 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask |
2204 | * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS |
2205 | * for masking). Caller should use TIOCGICOUNT to see which one it was |
2206 | */ |
2207 | case TIOCMIWAIT: |
2208 | save_flags(flags);cli(); |
2209 | cprev = pCh->icount; /* note the counters on entry */ |
2210 | restore_flags(flags); |
2211 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, |
2212 | CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); |
2213 | init_waitqueue_entry(&wait, current); |
2214 | add_wait_queue(&pCh->delta_msr_wait, &wait); |
2215 | set_current_state( TASK_INTERRUPTIBLE ); |
2216 | |
2217 | serviceOutgoingFifo( pCh->pMyBord ); |
2218 | for(;;) { |
2219 | ip2trace (CHANN, ITRC_IOCTL, 10, 0 ); |
2220 | |
2221 | schedule(); |
2222 | |
2223 | ip2trace (CHANN, ITRC_IOCTL, 11, 0 ); |
2224 | |
2225 | /* see if a signal did it */ |
2226 | if (signal_pending(current)) { |
2227 | rc = -ERESTARTSYS; |
2228 | break; |
2229 | } |
2230 | save_flags(flags);cli(); |
2231 | cnow = pCh->icount; /* atomic copy */ |
2232 | restore_flags(flags); |
2233 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2234 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { |
2235 | rc = -EIO; /* no change => rc */ |
2236 | break; |
2237 | } |
2238 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
2239 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
2240 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
2241 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { |
2242 | rc = 0; |
2243 | break; |
2244 | } |
2245 | cprev = cnow; |
2246 | } |
2247 | set_current_state( TASK_RUNNING ); |
2248 | remove_wait_queue(&pCh->delta_msr_wait, &wait); |
2249 | |
2250 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, |
2251 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); |
2252 | if ( ! (pCh->flags & ASYNC_CHECK_CD)) { |
2253 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP); |
2254 | } |
2255 | serviceOutgoingFifo( pCh->pMyBord ); |
2256 | return rc; |
2257 | break; |
2258 | |
2259 | /* |
2260 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
2261 | * Return: write counters to the user passed counter struct |
2262 | * NB: both 1->0 and 0->1 transitions are counted except for RI where |
2263 | * only 0->1 is counted. The controller is quite capable of counting |
2264 | * both, but this done to preserve compatibility with the standard |
2265 | * serial driver. |
2266 | */ |
2267 | case TIOCGICOUNT: |
2268 | ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc ); |
2269 | |
2270 | save_flags(flags);cli(); |
2271 | cnow = pCh->icount; |
2272 | restore_flags(flags); |
2273 | p_cuser = argp; |
2274 | rc = put_user(cnow.cts, &p_cuser->cts); |
2275 | rc = put_user(cnow.dsr, &p_cuser->dsr); |
2276 | rc = put_user(cnow.rng, &p_cuser->rng); |
2277 | rc = put_user(cnow.dcd, &p_cuser->dcd); |
2278 | rc = put_user(cnow.rx, &p_cuser->rx); |
2279 | rc = put_user(cnow.tx, &p_cuser->tx); |
2280 | rc = put_user(cnow.frame, &p_cuser->frame); |
2281 | rc = put_user(cnow.overrun, &p_cuser->overrun); |
2282 | rc = put_user(cnow.parity, &p_cuser->parity); |
2283 | rc = put_user(cnow.brk, &p_cuser->brk); |
2284 | rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); |
2285 | break; |
2286 | |
2287 | /* |
2288 | * The rest are not supported by this driver. By returning -ENOIOCTLCMD they |
2289 | * will be passed to the line discipline for it to handle. |
2290 | */ |
2291 | case TIOCSERCONFIG: |
2292 | case TIOCSERGWILD: |
2293 | case TIOCSERGETLSR: |
2294 | case TIOCSERSWILD: |
2295 | case TIOCSERGSTRUCT: |
2296 | case TIOCSERGETMULTI: |
2297 | case TIOCSERSETMULTI: |
2298 | |
2299 | default: |
2300 | ip2trace (CHANN, ITRC_IOCTL, 12, 0 ); |
2301 | |
2302 | rc = -ENOIOCTLCMD; |
2303 | break; |
2304 | } |
2305 | |
2306 | ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 ); |
2307 | |
2308 | return rc; |
2309 | } |
2310 | |
2311 | /******************************************************************************/ |
2312 | /* Function: GetSerialInfo() */ |
2313 | /* Parameters: Pointer to channel structure */ |
2314 | /* Pointer to old termios structure */ |
2315 | /* Returns: Nothing */ |
2316 | /* */ |
2317 | /* Description: */ |
2318 | /* This is to support the setserial command, and requires processing of the */ |
2319 | /* standard Linux serial structure. */ |
2320 | /******************************************************************************/ |
2321 | static int |
2322 | get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo ) |
2323 | { |
2324 | struct serial_struct tmp; |
2325 | |
2326 | memset ( &tmp, 0, sizeof(tmp) ); |
2327 | tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; |
2328 | if (BID_HAS_654(tmp.type)) { |
2329 | tmp.type = PORT_16650; |
2330 | } else { |
2331 | tmp.type = PORT_CIRRUS; |
2332 | } |
2333 | tmp.line = pCh->port_index; |
2334 | tmp.port = pCh->pMyBord->i2eBase; |
2335 | tmp.irq = ip2config.irq[pCh->port_index/64]; |
2336 | tmp.flags = pCh->flags; |
2337 | tmp.baud_base = pCh->BaudBase; |
2338 | tmp.close_delay = pCh->ClosingDelay; |
2339 | tmp.closing_wait = pCh->ClosingWaitTime; |
2340 | tmp.custom_divisor = pCh->BaudDivisor; |
2341 | return copy_to_user(retinfo,&tmp,sizeof(*retinfo)); |
2342 | } |
2343 | |
2344 | /******************************************************************************/ |
2345 | /* Function: SetSerialInfo() */ |
2346 | /* Parameters: Pointer to channel structure */ |
2347 | /* Pointer to old termios structure */ |
2348 | /* Returns: Nothing */ |
2349 | /* */ |
2350 | /* Description: */ |
2351 | /* This function provides support for setserial, which uses the TIOCSSERIAL */ |
2352 | /* ioctl. Not all setserial parameters are relevant. If the user attempts to */ |
2353 | /* change the IRQ, address or type of the port the ioctl fails. */ |
2354 | /******************************************************************************/ |
2355 | static int |
2356 | set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info ) |
2357 | { |
2358 | struct serial_struct ns; |
2359 | int old_flags, old_baud_divisor; |
2360 | |
2361 | if (copy_from_user(&ns, new_info, sizeof (ns))) |
2362 | return -EFAULT; |
2363 | |
2364 | /* |
2365 | * We don't allow setserial to change IRQ, board address, type or baud |
2366 | * base. Also line nunber as such is meaningless but we use it for our |
2367 | * array index so it is fixed also. |
2368 | */ |
2369 | if ( (ns.irq != ip2config.irq[pCh->port_index]) |
2370 | || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase))) |
2371 | || (ns.baud_base != pCh->BaudBase) |
2372 | || (ns.line != pCh->port_index) ) { |
2373 | return -EINVAL; |
2374 | } |
2375 | |
2376 | old_flags = pCh->flags; |
2377 | old_baud_divisor = pCh->BaudDivisor; |
2378 | |
2379 | if ( !capable(CAP_SYS_ADMIN) ) { |
2380 | if ( ( ns.close_delay != pCh->ClosingDelay ) || |
2381 | ( (ns.flags & ~ASYNC_USR_MASK) != |
2382 | (pCh->flags & ~ASYNC_USR_MASK) ) ) { |
2383 | return -EPERM; |
2384 | } |
2385 | |
2386 | pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | |
2387 | (ns.flags & ASYNC_USR_MASK); |
2388 | pCh->BaudDivisor = ns.custom_divisor; |
2389 | } else { |
2390 | pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | |
2391 | (ns.flags & ASYNC_FLAGS); |
2392 | pCh->BaudDivisor = ns.custom_divisor; |
2393 | pCh->ClosingDelay = ns.close_delay * HZ/100; |
2394 | pCh->ClosingWaitTime = ns.closing_wait * HZ/100; |
2395 | } |
2396 | |
2397 | if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) |
2398 | || (old_baud_divisor != pCh->BaudDivisor) ) { |
2399 | // Invalidate speed and reset parameters |
2400 | set_params( pCh, NULL ); |
2401 | } |
2402 | |
2403 | return 0; |
2404 | } |
2405 | |
2406 | /******************************************************************************/ |
2407 | /* Function: ip2_set_termios() */ |
2408 | /* Parameters: Pointer to tty structure */ |
2409 | /* Pointer to old termios structure */ |
2410 | /* Returns: Nothing */ |
2411 | /* */ |
2412 | /* Description: */ |
2413 | /* */ |
2414 | /* */ |
2415 | /******************************************************************************/ |
2416 | static void |
2417 | ip2_set_termios( PTTY tty, struct termios *old_termios ) |
2418 | { |
2419 | i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; |
2420 | |
2421 | #ifdef IP2DEBUG_IOCTL |
2422 | printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); |
2423 | #endif |
2424 | |
2425 | set_params( pCh, old_termios ); |
2426 | } |
2427 | |
2428 | /******************************************************************************/ |
2429 | /* Function: ip2_set_line_discipline() */ |
2430 | /* Parameters: Pointer to tty structure */ |
2431 | /* Returns: Nothing */ |
2432 | /* */ |
2433 | /* Description: Does nothing */ |
2434 | /* */ |
2435 | /* */ |
2436 | /******************************************************************************/ |
2437 | static void |
2438 | ip2_set_line_discipline ( PTTY tty ) |
2439 | { |
2440 | #ifdef IP2DEBUG_IOCTL |
2441 | printk (KERN_DEBUG "IP2: set line discipline\n" ); |
2442 | #endif |
2443 | |
2444 | ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); |
2445 | |
2446 | } |
2447 | |
2448 | /******************************************************************************/ |
2449 | /* Function: SetLine Characteristics() */ |
2450 | /* Parameters: Pointer to channel structure */ |
2451 | /* Returns: Nothing */ |
2452 | /* */ |
2453 | /* Description: */ |
2454 | /* This routine is called to update the channel structure with the new line */ |
2455 | /* characteristics, and send the appropriate commands to the board when they */ |
2456 | /* change. */ |
2457 | /******************************************************************************/ |
2458 | static void |
2459 | set_params( i2ChanStrPtr pCh, struct termios *o_tios ) |
2460 | { |
2461 | tcflag_t cflag, iflag, lflag; |
2462 | char stop_char, start_char; |
2463 | struct termios dummy; |
2464 | |
2465 | lflag = pCh->pTTY->termios->c_lflag; |
2466 | cflag = pCh->pTTY->termios->c_cflag; |
2467 | iflag = pCh->pTTY->termios->c_iflag; |
2468 | |
2469 | if (o_tios == NULL) { |
2470 | dummy.c_lflag = ~lflag; |
2471 | dummy.c_cflag = ~cflag; |
2472 | dummy.c_iflag = ~iflag; |
2473 | o_tios = &dummy; |
2474 | } |
2475 | |
2476 | { |
2477 | switch ( cflag & CBAUD ) { |
2478 | case B0: |
2479 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); |
2480 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); |
2481 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); |
2482 | pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); |
2483 | goto service_it; |
2484 | break; |
2485 | case B38400: |
2486 | /* |
2487 | * This is the speed that is overloaded with all the other high |
2488 | * speeds, depending upon the flag settings. |
2489 | */ |
2490 | if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { |
2491 | pCh->speed = CBR_57600; |
2492 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { |
2493 | pCh->speed = CBR_115200; |
2494 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { |
2495 | pCh->speed = CBR_C1; |
2496 | } else { |
2497 | pCh->speed = CBR_38400; |
2498 | } |
2499 | break; |
2500 | case B50: pCh->speed = CBR_50; break; |
2501 | case B75: pCh->speed = CBR_75; break; |
2502 | case B110: pCh->speed = CBR_110; break; |
2503 | case B134: pCh->speed = CBR_134; break; |
2504 | case B150: pCh->speed = CBR_150; break; |
2505 | case B200: pCh->speed = CBR_200; break; |
2506 | case B300: pCh->speed = CBR_300; break; |
2507 | case B600: pCh->speed = CBR_600; break; |
2508 | case B1200: pCh->speed = CBR_1200; break; |
2509 | case B1800: pCh->speed = CBR_1800; break; |
2510 | case B2400: pCh->speed = CBR_2400; break; |
2511 | case B4800: pCh->speed = CBR_4800; break; |
2512 | case B9600: pCh->speed = CBR_9600; break; |
2513 | case B19200: pCh->speed = CBR_19200; break; |
2514 | case B57600: pCh->speed = CBR_57600; break; |
2515 | case B115200: pCh->speed = CBR_115200; break; |
2516 | case B153600: pCh->speed = CBR_153600; break; |
2517 | case B230400: pCh->speed = CBR_230400; break; |
2518 | case B307200: pCh->speed = CBR_307200; break; |
2519 | case B460800: pCh->speed = CBR_460800; break; |
2520 | case B921600: pCh->speed = CBR_921600; break; |
2521 | default: pCh->speed = CBR_9600; break; |
2522 | } |
2523 | if ( pCh->speed == CBR_C1 ) { |
2524 | // Process the custom speed parameters. |
2525 | int bps = pCh->BaudBase / pCh->BaudDivisor; |
2526 | if ( bps == 921600 ) { |
2527 | pCh->speed = CBR_921600; |
2528 | } else { |
2529 | bps = bps/10; |
2530 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); |
2531 | } |
2532 | } |
2533 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); |
2534 | |
2535 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); |
2536 | pCh->dataSetOut |= (I2_DTR | I2_RTS); |
2537 | } |
2538 | if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) |
2539 | { |
2540 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, |
2541 | CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); |
2542 | } |
2543 | if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) |
2544 | { |
2545 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, |
2546 | CMD_SETPAR( |
2547 | (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) |
2548 | ) |
2549 | ); |
2550 | } |
2551 | /* byte size and parity */ |
2552 | if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) |
2553 | { |
2554 | int datasize; |
2555 | switch ( cflag & CSIZE ) { |
2556 | case CS5: datasize = CSZ_5; break; |
2557 | case CS6: datasize = CSZ_6; break; |
2558 | case CS7: datasize = CSZ_7; break; |
2559 | case CS8: datasize = CSZ_8; break; |
2560 | default: datasize = CSZ_5; break; /* as per serial.c */ |
2561 | } |
2562 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); |
2563 | } |
2564 | /* Process CTS flow control flag setting */ |
2565 | if ( (cflag & CRTSCTS) ) { |
2566 | i2QueueCommands(PTYPE_INLINE, pCh, 100, |
2567 | 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); |
2568 | } else { |
2569 | i2QueueCommands(PTYPE_INLINE, pCh, 100, |
2570 | 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); |
2571 | } |
2572 | // |
2573 | // Process XON/XOFF flow control flags settings |
2574 | // |
2575 | stop_char = STOP_CHAR(pCh->pTTY); |
2576 | start_char = START_CHAR(pCh->pTTY); |
2577 | |
2578 | //////////// can't be \000 |
2579 | if (stop_char == __DISABLED_CHAR ) |
2580 | { |
2581 | stop_char = ~__DISABLED_CHAR; |
2582 | } |
2583 | if (start_char == __DISABLED_CHAR ) |
2584 | { |
2585 | start_char = ~__DISABLED_CHAR; |
2586 | } |
2587 | ///////////////////////////////// |
2588 | |
2589 | if ( o_tios->c_cc[VSTART] != start_char ) |
2590 | { |
2591 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); |
2592 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); |
2593 | } |
2594 | if ( o_tios->c_cc[VSTOP] != stop_char ) |
2595 | { |
2596 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); |
2597 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); |
2598 | } |
2599 | if (stop_char == __DISABLED_CHAR ) |
2600 | { |
2601 | stop_char = ~__DISABLED_CHAR; //TEST123 |
2602 | goto no_xoff; |
2603 | } |
2604 | if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) |
2605 | { |
2606 | if ( iflag & IXOFF ) { // Enable XOFF output flow control |
2607 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); |
2608 | } else { // Disable XOFF output flow control |
2609 | no_xoff: |
2610 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); |
2611 | } |
2612 | } |
2613 | if (start_char == __DISABLED_CHAR ) |
2614 | { |
2615 | goto no_xon; |
2616 | } |
2617 | if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) |
2618 | { |
2619 | if ( iflag & IXON ) { |
2620 | if ( iflag & IXANY ) { // Enable XON/XANY output flow control |
2621 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); |
2622 | } else { // Enable XON output flow control |
2623 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); |
2624 | } |
2625 | } else { // Disable XON output flow control |
2626 | no_xon: |
2627 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); |
2628 | } |
2629 | } |
2630 | if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) |
2631 | { |
2632 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, |
2633 | CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); |
2634 | } |
2635 | if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) |
2636 | { |
2637 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, |
2638 | CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); |
2639 | } |
2640 | |
2641 | if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) |
2642 | ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) |
2643 | { |
2644 | char brkrpt = 0; |
2645 | char parrpt = 0; |
2646 | |
2647 | if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ |
2648 | /* Ignore breaks altogether */ |
2649 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); |
2650 | } else { |
2651 | if ( iflag & BRKINT ) { |
2652 | if ( iflag & PARMRK ) { |
2653 | brkrpt = 0x0a; // exception an inline triple |
2654 | } else { |
2655 | brkrpt = 0x1a; // exception and NULL |
2656 | } |
2657 | brkrpt |= 0x04; // flush input |
2658 | } else { |
2659 | if ( iflag & PARMRK ) { |
2660 | brkrpt = 0x0b; //POSIX triple \0377 \0 \0 |
2661 | } else { |
2662 | brkrpt = 0x01; // Null only |
2663 | } |
2664 | } |
2665 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); |
2666 | } |
2667 | |
2668 | if (iflag & IGNPAR) { |
2669 | parrpt = 0x20; |
2670 | /* would be 2 for not cirrus bug */ |
2671 | /* would be 0x20 cept for cirrus bug */ |
2672 | } else { |
2673 | if ( iflag & PARMRK ) { |
2674 | /* |
2675 | * Replace error characters with 3-byte sequence (\0377,\0,char) |
2676 | */ |
2677 | parrpt = 0x04 ; |
2678 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); |
2679 | } else { |
2680 | parrpt = 0x03; |
2681 | } |
2682 | } |
2683 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); |
2684 | } |
2685 | if (cflag & CLOCAL) { |
2686 | // Status reporting fails for DCD if this is off |
2687 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); |
2688 | pCh->flags &= ~ASYNC_CHECK_CD; |
2689 | } else { |
2690 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); |
2691 | pCh->flags |= ASYNC_CHECK_CD; |
2692 | } |
2693 | |
2694 | #ifdef XXX |
2695 | do_flags_thing: // This is a test, we don't do the flags thing |
2696 | |
2697 | if ( (cflag & CRTSCTS) ) { |
2698 | cflag |= 014000000000; |
2699 | } |
2700 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, |
2701 | CMD_UNIX_FLAGS(iflag,cflag,lflag)); |
2702 | #endif |
2703 | |
2704 | service_it: |
2705 | i2DrainOutput( pCh, 100 ); |
2706 | } |
2707 | |
2708 | /******************************************************************************/ |
2709 | /* IPL Device Section */ |
2710 | /******************************************************************************/ |
2711 | |
2712 | /******************************************************************************/ |
2713 | /* Function: ip2_ipl_read() */ |
2714 | /* Parameters: Pointer to device inode */ |
2715 | /* Pointer to file structure */ |
2716 | /* Pointer to data */ |
2717 | /* Number of bytes to read */ |
2718 | /* Returns: Success or failure */ |
2719 | /* */ |
2720 | /* Description: Ugly */ |
2721 | /* */ |
2722 | /* */ |
2723 | /******************************************************************************/ |
2724 | |
2725 | static |
2726 | ssize_t |
2727 | ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off ) |
2728 | { |
2729 | unsigned int minor = iminor(pFile->f_dentry->d_inode); |
2730 | int rc = 0; |
2731 | |
2732 | #ifdef IP2DEBUG_IPL |
2733 | printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); |
2734 | #endif |
2735 | |
2736 | switch( minor ) { |
2737 | case 0: // IPL device |
2738 | rc = -EINVAL; |
2739 | break; |
2740 | case 1: // Status dump |
2741 | rc = -EINVAL; |
2742 | break; |
2743 | case 2: // Ping device |
2744 | rc = -EINVAL; |
2745 | break; |
2746 | case 3: // Trace device |
2747 | rc = DumpTraceBuffer ( pData, count ); |
2748 | break; |
2749 | case 4: // Trace device |
2750 | rc = DumpFifoBuffer ( pData, count ); |
2751 | break; |
2752 | default: |
2753 | rc = -ENODEV; |
2754 | break; |
2755 | } |
2756 | return rc; |
2757 | } |
2758 | |
2759 | static int |
2760 | DumpFifoBuffer ( char __user *pData, int count ) |
2761 | { |
2762 | #ifdef DEBUG_FIFO |
2763 | int rc; |
2764 | rc = copy_to_user(pData, DBGBuf, count); |
2765 | |
2766 | printk(KERN_DEBUG "Last index %d\n", I ); |
2767 | |
2768 | return count; |
2769 | #endif /* DEBUG_FIFO */ |
2770 | return 0; |
2771 | } |
2772 | |
2773 | static int |
2774 | DumpTraceBuffer ( char __user *pData, int count ) |
2775 | { |
2776 | #ifdef IP2DEBUG_TRACE |
2777 | int rc; |
2778 | int dumpcount; |
2779 | int chunk; |
2780 | int *pIndex = (int __user *)pData; |
2781 | |
2782 | if ( count < (sizeof(int) * 6) ) { |
2783 | return -EIO; |
2784 | } |
2785 | rc = put_user(tracewrap, pIndex ); |
2786 | rc = put_user(TRACEMAX, ++pIndex ); |
2787 | rc = put_user(tracestrip, ++pIndex ); |
2788 | rc = put_user(tracestuff, ++pIndex ); |
2789 | pData += sizeof(int) * 6; |
2790 | count -= sizeof(int) * 6; |
2791 | |
2792 | dumpcount = tracestuff - tracestrip; |
2793 | if ( dumpcount < 0 ) { |
2794 | dumpcount += TRACEMAX; |
2795 | } |
2796 | if ( dumpcount > count ) { |
2797 | dumpcount = count; |
2798 | } |
2799 | chunk = TRACEMAX - tracestrip; |
2800 | if ( dumpcount > chunk ) { |
2801 | rc = copy_to_user(pData, &tracebuf[tracestrip], |
2802 | chunk * sizeof(tracebuf[0]) ); |
2803 | pData += chunk * sizeof(tracebuf[0]); |
2804 | tracestrip = 0; |
2805 | chunk = dumpcount - chunk; |
2806 | } else { |
2807 | chunk = dumpcount; |
2808 | } |
2809 | rc = copy_to_user(pData, &tracebuf[tracestrip], |
2810 | chunk * sizeof(tracebuf[0]) ); |
2811 | tracestrip += chunk; |
2812 | tracewrap = 0; |
2813 | |
2814 | rc = put_user(tracestrip, ++pIndex ); |
2815 | rc = put_user(tracestuff, ++pIndex ); |
2816 | |
2817 | return dumpcount; |
2818 | #else |
2819 | return 0; |
2820 | #endif |
2821 | } |
2822 | |
2823 | /******************************************************************************/ |
2824 | /* Function: ip2_ipl_write() */ |
2825 | /* Parameters: */ |
2826 | /* Pointer to file structure */ |
2827 | /* Pointer to data */ |
2828 | /* Number of bytes to write */ |
2829 | /* Returns: Success or failure */ |
2830 | /* */ |
2831 | /* Description: */ |
2832 | /* */ |
2833 | /* */ |
2834 | /******************************************************************************/ |
2835 | static ssize_t |
2836 | ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off) |
2837 | { |
2838 | #ifdef IP2DEBUG_IPL |
2839 | printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); |
2840 | #endif |
2841 | return 0; |
2842 | } |
2843 | |
2844 | /******************************************************************************/ |
2845 | /* Function: ip2_ipl_ioctl() */ |
2846 | /* Parameters: Pointer to device inode */ |
2847 | /* Pointer to file structure */ |
2848 | /* Command */ |
2849 | /* Argument */ |
2850 | /* Returns: Success or failure */ |
2851 | /* */ |
2852 | /* Description: */ |
2853 | /* */ |
2854 | /* */ |
2855 | /******************************************************************************/ |
2856 | static int |
2857 | ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg ) |
2858 | { |
2859 | unsigned int iplminor = iminor(pInode); |
2860 | int rc = 0; |
2861 | void __user *argp = (void __user *)arg; |
2862 | ULONG __user *pIndex = argp; |
2863 | i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; |
2864 | i2ChanStrPtr pCh; |
2865 | |
2866 | #ifdef IP2DEBUG_IPL |
2867 | printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); |
2868 | #endif |
2869 | |
2870 | switch ( iplminor ) { |
2871 | case 0: // IPL device |
2872 | rc = -EINVAL; |
2873 | break; |
2874 | case 1: // Status dump |
2875 | case 5: |
2876 | case 9: |
2877 | case 13: |
2878 | switch ( cmd ) { |
2879 | case 64: /* Driver - ip2stat */ |
2880 | rc = put_user(ip2_tty_driver->refcount, pIndex++ ); |
2881 | rc = put_user(irq_counter, pIndex++ ); |
2882 | rc = put_user(bh_counter, pIndex++ ); |
2883 | break; |
2884 | |
2885 | case 65: /* Board - ip2stat */ |
2886 | if ( pB ) { |
2887 | rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); |
2888 | rc = put_user(INB(pB->i2eStatus), |
2889 | (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); |
2890 | } else { |
2891 | rc = -ENODEV; |
2892 | } |
2893 | break; |
2894 | |
2895 | default: |
2896 | if (cmd < IP2_MAX_PORTS) { |
2897 | pCh = DevTable[cmd]; |
2898 | if ( pCh ) |
2899 | { |
2900 | rc = copy_to_user(argp, pCh, sizeof(i2ChanStr)); |
2901 | } else { |
2902 | rc = -ENODEV; |
2903 | } |
2904 | } else { |
2905 | rc = -EINVAL; |
2906 | } |
2907 | } |
2908 | break; |
2909 | |
2910 | case 2: // Ping device |
2911 | rc = -EINVAL; |
2912 | break; |
2913 | case 3: // Trace device |
2914 | if ( cmd == 1 ) { |
2915 | rc = put_user(iiSendPendingMail, pIndex++ ); |
2916 | rc = put_user(i2InitChannels, pIndex++ ); |
2917 | rc = put_user(i2QueueNeeds, pIndex++ ); |
2918 | rc = put_user(i2QueueCommands, pIndex++ ); |
2919 | rc = put_user(i2GetStatus, pIndex++ ); |
2920 | rc = put_user(i2Input, pIndex++ ); |
2921 | rc = put_user(i2InputFlush, pIndex++ ); |
2922 | rc = put_user(i2Output, pIndex++ ); |
2923 | rc = put_user(i2FlushOutput, pIndex++ ); |
2924 | rc = put_user(i2DrainWakeup, pIndex++ ); |
2925 | rc = put_user(i2DrainOutput, pIndex++ ); |
2926 | rc = put_user(i2OutputFree, pIndex++ ); |
2927 | rc = put_user(i2StripFifo, pIndex++ ); |
2928 | rc = put_user(i2StuffFifoBypass, pIndex++ ); |
2929 | rc = put_user(i2StuffFifoFlow, pIndex++ ); |
2930 | rc = put_user(i2StuffFifoInline, pIndex++ ); |
2931 | rc = put_user(i2ServiceBoard, pIndex++ ); |
2932 | rc = put_user(serviceOutgoingFifo, pIndex++ ); |
2933 | // rc = put_user(ip2_init, pIndex++ ); |
2934 | rc = put_user(ip2_init_board, pIndex++ ); |
2935 | rc = put_user(find_eisa_board, pIndex++ ); |
2936 | rc = put_user(set_irq, pIndex++ ); |
2937 | rc = put_user(ip2_interrupt, pIndex++ ); |
2938 | rc = put_user(ip2_poll, pIndex++ ); |
2939 | rc = put_user(service_all_boards, pIndex++ ); |
2940 | rc = put_user(do_input, pIndex++ ); |
2941 | rc = put_user(do_status, pIndex++ ); |
2942 | #ifndef IP2DEBUG_OPEN |
2943 | rc = put_user(0, pIndex++ ); |
2944 | #else |
2945 | rc = put_user(open_sanity_check, pIndex++ ); |
2946 | #endif |
2947 | rc = put_user(ip2_open, pIndex++ ); |
2948 | rc = put_user(ip2_close, pIndex++ ); |
2949 | rc = put_user(ip2_hangup, pIndex++ ); |
2950 | rc = put_user(ip2_write, pIndex++ ); |
2951 | rc = put_user(ip2_putchar, pIndex++ ); |
2952 | rc = put_user(ip2_flush_chars, pIndex++ ); |
2953 | rc = put_user(ip2_write_room, pIndex++ ); |
2954 | rc = put_user(ip2_chars_in_buf, pIndex++ ); |
2955 | rc = put_user(ip2_flush_buffer, pIndex++ ); |
2956 | |
2957 | //rc = put_user(ip2_wait_until_sent, pIndex++ ); |
2958 | rc = put_user(0, pIndex++ ); |
2959 | |
2960 | rc = put_user(ip2_throttle, pIndex++ ); |
2961 | rc = put_user(ip2_unthrottle, pIndex++ ); |
2962 | rc = put_user(ip2_ioctl, pIndex++ ); |
2963 | rc = put_user(0, pIndex++ ); |
2964 | rc = put_user(get_serial_info, pIndex++ ); |
2965 | rc = put_user(set_serial_info, pIndex++ ); |
2966 | rc = put_user(ip2_set_termios, pIndex++ ); |
2967 | rc = put_user(ip2_set_line_discipline, pIndex++ ); |
2968 | rc = put_user(set_params, pIndex++ ); |
2969 | } else { |
2970 | rc = -EINVAL; |
2971 | } |
2972 | |
2973 | break; |
2974 | |
2975 | default: |
2976 | rc = -ENODEV; |
2977 | break; |
2978 | } |
2979 | return rc; |
2980 | } |
2981 | |
2982 | /******************************************************************************/ |
2983 | /* Function: ip2_ipl_open() */ |
2984 | /* Parameters: Pointer to device inode */ |
2985 | /* Pointer to file structure */ |
2986 | /* Returns: Success or failure */ |
2987 | /* */ |
2988 | /* Description: */ |
2989 | /* */ |
2990 | /* */ |
2991 | /******************************************************************************/ |
2992 | static int |
2993 | ip2_ipl_open( struct inode *pInode, struct file *pFile ) |
2994 | { |
2995 | unsigned int iplminor = iminor(pInode); |
2996 | i2eBordStrPtr pB; |
2997 | i2ChanStrPtr pCh; |
2998 | |
2999 | #ifdef IP2DEBUG_IPL |
3000 | printk (KERN_DEBUG "IP2IPL: open\n" ); |
3001 | #endif |
3002 | |
3003 | switch(iplminor) { |
3004 | // These are the IPL devices |
3005 | case 0: |
3006 | case 4: |
3007 | case 8: |
3008 | case 12: |
3009 | break; |
3010 | |
3011 | // These are the status devices |
3012 | case 1: |
3013 | case 5: |
3014 | case 9: |
3015 | case 13: |
3016 | break; |
3017 | |
3018 | // These are the debug devices |
3019 | case 2: |
3020 | case 6: |
3021 | case 10: |
3022 | case 14: |
3023 | pB = i2BoardPtrTable[iplminor / 4]; |
3024 | pCh = (i2ChanStrPtr) pB->i2eChannelPtr; |
3025 | break; |
3026 | |
3027 | // This is the trace device |
3028 | case 3: |
3029 | break; |
3030 | } |
3031 | return 0; |
3032 | } |
3033 | /******************************************************************************/ |
3034 | /* Function: ip2_read_procmem */ |
3035 | /* Parameters: */ |
3036 | /* */ |
3037 | /* Returns: Length of output */ |
3038 | /* */ |
3039 | /* Description: */ |
3040 | /* Supplies some driver operating parameters */ |
3041 | /* Not real useful unless your debugging the fifo */ |
3042 | /* */ |
3043 | /******************************************************************************/ |
3044 | |
3045 | #define LIMIT (PAGE_SIZE - 120) |
3046 | |
3047 | static int |
3048 | ip2_read_procmem(char *buf, char **start, off_t offset, int len) |
3049 | { |
3050 | i2eBordStrPtr pB; |
3051 | i2ChanStrPtr pCh; |
3052 | PTTY tty; |
3053 | int i; |
3054 | |
3055 | len = 0; |
3056 | |
3057 | #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" |
3058 | #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" |
3059 | #define FMTLIN3 " 0x%04x 0x%04x rc flow\n" |
3060 | |
3061 | len += sprintf(buf+len,"\n"); |
3062 | |
3063 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
3064 | pB = i2BoardPtrTable[i]; |
3065 | if ( pB ) { |
3066 | len += sprintf(buf+len,"board %d:\n",i); |
3067 | len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n", |
3068 | pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); |
3069 | } |
3070 | } |
3071 | |
3072 | len += sprintf(buf+len,"#: tty flags, port flags, cflags, iflags\n"); |
3073 | for (i=0; i < IP2_MAX_PORTS; i++) { |
3074 | if (len > LIMIT) |
3075 | break; |
3076 | pCh = DevTable[i]; |
3077 | if (pCh) { |
3078 | tty = pCh->pTTY; |
3079 | if (tty && tty->count) { |
3080 | len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags, |
3081 | tty->termios->c_cflag,tty->termios->c_iflag); |
3082 | |
3083 | len += sprintf(buf+len,FMTLIN2, |
3084 | pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); |
3085 | len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room); |
3086 | } |
3087 | } |
3088 | } |
3089 | return len; |
3090 | } |
3091 | |
3092 | /* |
3093 | * This is the handler for /proc/tty/driver/ip2 |
3094 | * |
3095 | * This stretch of code has been largely plagerized from at least three |
3096 | * different sources including ip2mkdev.c and a couple of other drivers. |
3097 | * The bugs are all mine. :-) =mhw= |
3098 | */ |
3099 | static int ip2_read_proc(char *page, char **start, off_t off, |
3100 | int count, int *eof, void *data) |
3101 | { |
3102 | int i, j, box; |
3103 | int len = 0; |
3104 | int boxes = 0; |
3105 | int ports = 0; |
3106 | int tports = 0; |
3107 | off_t begin = 0; |
3108 | i2eBordStrPtr pB; |
3109 | |
3110 | len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion ); |
3111 | len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", |
3112 | IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, |
3113 | IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); |
3114 | |
3115 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
3116 | /* This need to be reset for a board by board count... */ |
3117 | boxes = 0; |
3118 | pB = i2BoardPtrTable[i]; |
3119 | if( pB ) { |
3120 | switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) |
3121 | { |
3122 | case POR_ID_FIIEX: |
3123 | len += sprintf( page+len, "Board %d: EX ports=", i ); |
3124 | for( box = 0; box < ABS_MAX_BOXES; ++box ) |
3125 | { |
3126 | ports = 0; |
3127 | |
3128 | if( pB->i2eChannelMap[box] != 0 ) ++boxes; |
3129 | for( j = 0; j < ABS_BIGGEST_BOX; ++j ) |
3130 | { |
3131 | if( pB->i2eChannelMap[box] & 1<< j ) { |
3132 | ++ports; |
3133 | } |
3134 | } |
3135 | len += sprintf( page+len, "%d,", ports ); |
3136 | tports += ports; |
3137 | } |
3138 | |
3139 | --len; /* Backup over that last comma */ |
3140 | |
3141 | len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 ); |
3142 | break; |
3143 | |
3144 | case POR_ID_II_4: |
3145 | len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i ); |
3146 | tports = ports = 4; |
3147 | break; |
3148 | |
3149 | case POR_ID_II_8: |
3150 | len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i ); |
3151 | tports = ports = 8; |
3152 | break; |
3153 | |
3154 | case POR_ID_II_8R: |
3155 | len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i ); |
3156 | tports = ports = 8; |
3157 | break; |
3158 | |
3159 | default: |
3160 | len += sprintf(page+len, "Board %d: unknown", i ); |
3161 | /* Don't try and probe for minor numbers */ |
3162 | tports = ports = 0; |
3163 | } |
3164 | |
3165 | } else { |
3166 | /* Don't try and probe for minor numbers */ |
3167 | len += sprintf(page+len, "Board %d: vacant", i ); |
3168 | tports = ports = 0; |
3169 | } |
3170 | |
3171 | if( tports ) { |
3172 | len += sprintf(page+len, " minors=" ); |
3173 | |
3174 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) |
3175 | { |
3176 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) |
3177 | { |
3178 | if ( pB->i2eChannelMap[box] & (1 << j) ) |
3179 | { |
3180 | len += sprintf (page+len,"%d,", |
3181 | j + ABS_BIGGEST_BOX * |
3182 | (box+i*ABS_MAX_BOXES)); |
3183 | } |
3184 | } |
3185 | } |
3186 | |
3187 | page[ len - 1 ] = '\n'; /* Overwrite that last comma */ |
3188 | } else { |
3189 | len += sprintf (page+len,"\n" ); |
3190 | } |
3191 | |
3192 | if (len+begin > off+count) |
3193 | break; |
3194 | if (len+begin < off) { |
3195 | begin += len; |
3196 | len = 0; |
3197 | } |
3198 | } |
3199 | |
3200 | if (i >= IP2_MAX_BOARDS) |
3201 | *eof = 1; |
3202 | if (off >= len+begin) |
3203 | return 0; |
3204 | |
3205 | *start = page + (off-begin); |
3206 | return ((count < begin+len-off) ? count : begin+len-off); |
3207 | } |
3208 | |
3209 | /******************************************************************************/ |
3210 | /* Function: ip2trace() */ |
3211 | /* Parameters: Value to add to trace buffer */ |
3212 | /* Returns: Nothing */ |
3213 | /* */ |
3214 | /* Description: */ |
3215 | /* */ |
3216 | /* */ |
3217 | /******************************************************************************/ |
3218 | #ifdef IP2DEBUG_TRACE |
3219 | void |
3220 | ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) |
3221 | { |
3222 | long flags; |
3223 | unsigned long *pCode = &codes; |
3224 | union ip2breadcrumb bc; |
3225 | i2ChanStrPtr pCh; |
3226 | |
3227 | |
3228 | tracebuf[tracestuff++] = jiffies; |
3229 | if ( tracestuff == TRACEMAX ) { |
3230 | tracestuff = 0; |
3231 | } |
3232 | if ( tracestuff == tracestrip ) { |
3233 | if ( ++tracestrip == TRACEMAX ) { |
3234 | tracestrip = 0; |
3235 | } |
3236 | ++tracewrap; |
3237 | } |
3238 | |
3239 | bc.hdr.port = 0xff & pn; |
3240 | bc.hdr.cat = cat; |
3241 | bc.hdr.codes = (unsigned char)( codes & 0xff ); |
3242 | bc.hdr.label = label; |
3243 | tracebuf[tracestuff++] = bc.value; |
3244 | |
3245 | for (;;) { |
3246 | if ( tracestuff == TRACEMAX ) { |
3247 | tracestuff = 0; |
3248 | } |
3249 | if ( tracestuff == tracestrip ) { |
3250 | if ( ++tracestrip == TRACEMAX ) { |
3251 | tracestrip = 0; |
3252 | } |
3253 | ++tracewrap; |
3254 | } |
3255 | |
3256 | if ( !codes-- ) |
3257 | break; |
3258 | |
3259 | tracebuf[tracestuff++] = *++pCode; |
3260 | } |
3261 | } |
3262 | #endif |
3263 | |
3264 | |
3265 | MODULE_LICENSE("GPL"); |