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1da177e4 LT |
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 | |
9c4b562a | 38 | // Compile defaults for io and irq are now set in ip2.c not ip2.h! |
1da177e4 LT |
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> | |
1da177e4 LT |
123 | |
124 | #include <asm/uaccess.h> | |
125 | ||
9c4b562a AB |
126 | #include "ip2types.h" |
127 | #include "ip2trace.h" | |
128 | #include "ip2ioctl.h" | |
129 | #include "ip2.h" | |
130 | #include "i2ellis.h" | |
131 | #include "i2lib.h" | |
1da177e4 LT |
132 | |
133 | /***************** | |
134 | * /proc/ip2mem * | |
135 | *****************/ | |
136 | ||
137 | #include <linux/proc_fs.h> | |
138 | ||
139 | static int ip2_read_procmem(char *, char **, off_t, int); | |
140 | static int ip2_read_proc(char *, char **, off_t, int, int *, void * ); | |
141 | ||
142 | /********************/ | |
143 | /* Type Definitions */ | |
144 | /********************/ | |
145 | ||
146 | /*************/ | |
147 | /* Constants */ | |
148 | /*************/ | |
149 | ||
150 | /* String constants to identify ourselves */ | |
151 | static char *pcName = "Computone IntelliPort Plus multiport driver"; | |
152 | static char *pcVersion = "1.2.14"; | |
153 | ||
154 | /* String constants for port names */ | |
155 | static char *pcDriver_name = "ip2"; | |
156 | static char *pcIpl = "ip2ipl"; | |
157 | ||
158 | /* Serial subtype definitions */ | |
159 | #define SERIAL_TYPE_NORMAL 1 | |
160 | ||
161 | // cheezy kludge or genius - you decide? | |
162 | int ip2_loadmain(int *, int *, unsigned char *, int); | |
163 | static unsigned char *Fip_firmware; | |
164 | static int Fip_firmware_size; | |
165 | ||
166 | /***********************/ | |
167 | /* Function Prototypes */ | |
168 | /***********************/ | |
169 | ||
170 | /* Global module entry functions */ | |
171 | ||
172 | /* Private (static) functions */ | |
173 | static int ip2_open(PTTY, struct file *); | |
174 | static void ip2_close(PTTY, struct file *); | |
d9e39538 | 175 | static int ip2_write(PTTY, const unsigned char *, int); |
1da177e4 LT |
176 | static void ip2_putchar(PTTY, unsigned char); |
177 | static void ip2_flush_chars(PTTY); | |
178 | static int ip2_write_room(PTTY); | |
179 | static int ip2_chars_in_buf(PTTY); | |
180 | static void ip2_flush_buffer(PTTY); | |
181 | static int ip2_ioctl(PTTY, struct file *, UINT, ULONG); | |
182 | static void ip2_set_termios(PTTY, struct termios *); | |
183 | static void ip2_set_line_discipline(PTTY); | |
184 | static void ip2_throttle(PTTY); | |
185 | static void ip2_unthrottle(PTTY); | |
186 | static void ip2_stop(PTTY); | |
187 | static void ip2_start(PTTY); | |
188 | static void ip2_hangup(PTTY); | |
189 | static int ip2_tiocmget(struct tty_struct *tty, struct file *file); | |
190 | static int ip2_tiocmset(struct tty_struct *tty, struct file *file, | |
191 | unsigned int set, unsigned int clear); | |
192 | ||
193 | static void set_irq(int, int); | |
194 | static void ip2_interrupt_bh(i2eBordStrPtr pB); | |
195 | static irqreturn_t ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs); | |
196 | static void ip2_poll(unsigned long arg); | |
197 | static inline void service_all_boards(void); | |
198 | static void do_input(void *p); | |
199 | static void do_status(void *p); | |
200 | ||
201 | static void ip2_wait_until_sent(PTTY,int); | |
202 | ||
203 | static void set_params (i2ChanStrPtr, struct termios *); | |
204 | static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *); | |
205 | static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *); | |
206 | ||
207 | static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *); | |
208 | static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *); | |
209 | static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG); | |
210 | static int ip2_ipl_open(struct inode *, struct file *); | |
211 | ||
212 | static int DumpTraceBuffer(char __user *, int); | |
213 | static int DumpFifoBuffer( char __user *, int); | |
214 | ||
215 | static void ip2_init_board(int); | |
216 | static unsigned short find_eisa_board(int); | |
217 | ||
218 | /***************/ | |
219 | /* Static Data */ | |
220 | /***************/ | |
221 | ||
222 | static struct tty_driver *ip2_tty_driver; | |
223 | ||
224 | /* Here, then is a table of board pointers which the interrupt routine should | |
225 | * scan through to determine who it must service. | |
226 | */ | |
227 | static unsigned short i2nBoards; // Number of boards here | |
228 | ||
229 | static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS]; | |
230 | ||
231 | static i2ChanStrPtr DevTable[IP2_MAX_PORTS]; | |
232 | //DevTableMem just used to save addresses for kfree | |
233 | static void *DevTableMem[IP2_MAX_BOARDS]; | |
234 | ||
235 | /* This is the driver descriptor for the ip2ipl device, which is used to | |
236 | * download the loadware to the boards. | |
237 | */ | |
238 | static struct file_operations ip2_ipl = { | |
239 | .owner = THIS_MODULE, | |
240 | .read = ip2_ipl_read, | |
241 | .write = ip2_ipl_write, | |
242 | .ioctl = ip2_ipl_ioctl, | |
243 | .open = ip2_ipl_open, | |
244 | }; | |
245 | ||
246 | static unsigned long irq_counter = 0; | |
247 | static unsigned long bh_counter = 0; | |
248 | ||
249 | // Use immediate queue to service interrupts | |
250 | #define USE_IQI | |
251 | //#define USE_IQ // PCI&2.2 needs work | |
252 | ||
253 | /* The timer_list entry for our poll routine. If interrupt operation is not | |
254 | * selected, the board is serviced periodically to see if anything needs doing. | |
255 | */ | |
256 | #define POLL_TIMEOUT (jiffies + 1) | |
8d06afab | 257 | static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0); |
1da177e4 LT |
258 | static char TimerOn; |
259 | ||
260 | #ifdef IP2DEBUG_TRACE | |
261 | /* Trace (debug) buffer data */ | |
262 | #define TRACEMAX 1000 | |
263 | static unsigned long tracebuf[TRACEMAX]; | |
264 | static int tracestuff; | |
265 | static int tracestrip; | |
266 | static int tracewrap; | |
267 | #endif | |
268 | ||
269 | /**********/ | |
270 | /* Macros */ | |
271 | /**********/ | |
272 | ||
273 | #if defined(MODULE) && defined(IP2DEBUG_OPEN) | |
274 | #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \ | |
275 | tty->name,(pCh->flags),ip2_tty_driver->refcount, \ | |
276 | tty->count,/*GET_USE_COUNT(module)*/0,s) | |
277 | #else | |
278 | #define DBG_CNT(s) | |
279 | #endif | |
280 | ||
281 | /********/ | |
282 | /* Code */ | |
283 | /********/ | |
284 | ||
9c4b562a AB |
285 | #include "i2ellis.c" /* Extremely low-level interface services */ |
286 | #include "i2cmd.c" /* Standard loadware command definitions */ | |
287 | #include "i2lib.c" /* High level interface services */ | |
1da177e4 LT |
288 | |
289 | /* Configuration area for modprobe */ | |
290 | ||
291 | MODULE_AUTHOR("Doug McNash"); | |
292 | MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); | |
293 | ||
294 | static int poll_only = 0; | |
295 | ||
296 | static int Eisa_irq; | |
297 | static int Eisa_slot; | |
298 | ||
299 | static int iindx; | |
300 | static char rirqs[IP2_MAX_BOARDS]; | |
301 | static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; | |
302 | ||
303 | /* for sysfs class support */ | |
ca8eca68 | 304 | static struct class *ip2_class; |
1da177e4 LT |
305 | |
306 | // Some functions to keep track of what irq's we have | |
307 | ||
673e321c | 308 | static int |
1da177e4 LT |
309 | is_valid_irq(int irq) |
310 | { | |
311 | int *i = Valid_Irqs; | |
312 | ||
313 | while ((*i != 0) && (*i != irq)) { | |
314 | i++; | |
315 | } | |
316 | return (*i); | |
317 | } | |
318 | ||
673e321c | 319 | static void |
1da177e4 LT |
320 | mark_requested_irq( char irq ) |
321 | { | |
322 | rirqs[iindx++] = irq; | |
323 | } | |
324 | ||
325 | #ifdef MODULE | |
673e321c | 326 | static int |
1da177e4 LT |
327 | clear_requested_irq( char irq ) |
328 | { | |
329 | int i; | |
330 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
331 | if (rirqs[i] == irq) { | |
332 | rirqs[i] = 0; | |
333 | return 1; | |
334 | } | |
335 | } | |
336 | return 0; | |
337 | } | |
338 | #endif | |
339 | ||
673e321c | 340 | static int |
1da177e4 LT |
341 | have_requested_irq( char irq ) |
342 | { | |
343 | // array init to zeros so 0 irq will not be requested as a side effect | |
344 | int i; | |
345 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
346 | if (rirqs[i] == irq) | |
347 | return 1; | |
348 | } | |
349 | return 0; | |
350 | } | |
351 | ||
352 | /******************************************************************************/ | |
353 | /* Function: init_module() */ | |
354 | /* Parameters: None */ | |
355 | /* Returns: Success (0) */ | |
356 | /* */ | |
357 | /* Description: */ | |
358 | /* This is a required entry point for an installable module. It simply calls */ | |
359 | /* the driver initialisation function and returns what it returns. */ | |
360 | /******************************************************************************/ | |
361 | #ifdef MODULE | |
362 | int | |
363 | init_module(void) | |
364 | { | |
365 | #ifdef IP2DEBUG_INIT | |
366 | printk (KERN_DEBUG "Loading module ...\n" ); | |
367 | #endif | |
368 | return 0; | |
369 | } | |
370 | #endif /* MODULE */ | |
371 | ||
372 | /******************************************************************************/ | |
373 | /* Function: cleanup_module() */ | |
374 | /* Parameters: None */ | |
375 | /* Returns: Nothing */ | |
376 | /* */ | |
377 | /* Description: */ | |
378 | /* This is a required entry point for an installable module. It has to return */ | |
379 | /* the device and the driver to a passive state. It should not be necessary */ | |
380 | /* to reset the board fully, especially as the loadware is downloaded */ | |
381 | /* externally rather than in the driver. We just want to disable the board */ | |
382 | /* and clear the loadware to a reset state. To allow this there has to be a */ | |
383 | /* way to detect whether the board has the loadware running at init time to */ | |
384 | /* handle subsequent installations of the driver. All memory allocated by the */ | |
385 | /* driver should be returned since it may be unloaded from memory. */ | |
386 | /******************************************************************************/ | |
387 | #ifdef MODULE | |
388 | void | |
389 | cleanup_module(void) | |
390 | { | |
391 | int err; | |
392 | int i; | |
393 | ||
394 | #ifdef IP2DEBUG_INIT | |
395 | printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion ); | |
396 | #endif | |
397 | /* Stop poll timer if we had one. */ | |
398 | if ( TimerOn ) { | |
399 | del_timer ( &PollTimer ); | |
400 | TimerOn = 0; | |
401 | } | |
402 | ||
403 | /* Reset the boards we have. */ | |
404 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
405 | if ( i2BoardPtrTable[i] ) { | |
406 | iiReset( i2BoardPtrTable[i] ); | |
407 | } | |
408 | } | |
409 | ||
410 | /* The following is done at most once, if any boards were installed. */ | |
411 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
412 | if ( i2BoardPtrTable[i] ) { | |
413 | iiResetDelay( i2BoardPtrTable[i] ); | |
414 | /* free io addresses and Tibet */ | |
415 | release_region( ip2config.addr[i], 8 ); | |
ca8eca68 | 416 | class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); |
1da177e4 | 417 | devfs_remove("ip2/ipl%d", i); |
ca8eca68 | 418 | class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); |
1da177e4 LT |
419 | devfs_remove("ip2/stat%d", i); |
420 | } | |
421 | /* Disable and remove interrupt handler. */ | |
422 | if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { | |
423 | free_irq ( ip2config.irq[i], (void *)&pcName); | |
424 | clear_requested_irq( ip2config.irq[i]); | |
425 | } | |
426 | } | |
ca8eca68 | 427 | class_destroy(ip2_class); |
1da177e4 LT |
428 | devfs_remove("ip2"); |
429 | if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) { | |
430 | printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); | |
431 | } | |
432 | put_tty_driver(ip2_tty_driver); | |
433 | if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) { | |
434 | printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err); | |
435 | } | |
436 | remove_proc_entry("ip2mem", &proc_root); | |
437 | ||
438 | // free memory | |
439 | for (i = 0; i < IP2_MAX_BOARDS; i++) { | |
440 | void *pB; | |
441 | #ifdef CONFIG_PCI | |
442 | if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) { | |
443 | pci_disable_device(ip2config.pci_dev[i]); | |
444 | ip2config.pci_dev[i] = NULL; | |
445 | } | |
446 | #endif | |
447 | if ((pB = i2BoardPtrTable[i]) != 0 ) { | |
448 | kfree ( pB ); | |
449 | i2BoardPtrTable[i] = NULL; | |
450 | } | |
451 | if ((DevTableMem[i]) != NULL ) { | |
452 | kfree ( DevTableMem[i] ); | |
453 | DevTableMem[i] = NULL; | |
454 | } | |
455 | } | |
456 | ||
457 | /* Cleanup the iiEllis subsystem. */ | |
458 | iiEllisCleanup(); | |
459 | #ifdef IP2DEBUG_INIT | |
460 | printk (KERN_DEBUG "IP2 Unloaded\n" ); | |
461 | #endif | |
462 | } | |
463 | #endif /* MODULE */ | |
464 | ||
465 | static struct tty_operations ip2_ops = { | |
466 | .open = ip2_open, | |
467 | .close = ip2_close, | |
468 | .write = ip2_write, | |
469 | .put_char = ip2_putchar, | |
470 | .flush_chars = ip2_flush_chars, | |
471 | .write_room = ip2_write_room, | |
472 | .chars_in_buffer = ip2_chars_in_buf, | |
473 | .flush_buffer = ip2_flush_buffer, | |
474 | .ioctl = ip2_ioctl, | |
475 | .throttle = ip2_throttle, | |
476 | .unthrottle = ip2_unthrottle, | |
477 | .set_termios = ip2_set_termios, | |
478 | .set_ldisc = ip2_set_line_discipline, | |
479 | .stop = ip2_stop, | |
480 | .start = ip2_start, | |
481 | .hangup = ip2_hangup, | |
482 | .read_proc = ip2_read_proc, | |
483 | .tiocmget = ip2_tiocmget, | |
484 | .tiocmset = ip2_tiocmset, | |
485 | }; | |
486 | ||
487 | /******************************************************************************/ | |
488 | /* Function: ip2_loadmain() */ | |
489 | /* Parameters: irq, io from command line of insmod et. al. */ | |
490 | /* pointer to fip firmware and firmware size for boards */ | |
491 | /* Returns: Success (0) */ | |
492 | /* */ | |
493 | /* Description: */ | |
494 | /* This was the required entry point for all drivers (now in ip2.c) */ | |
495 | /* It performs all */ | |
496 | /* initialisation of the devices and driver structures, and registers itself */ | |
497 | /* with the relevant kernel modules. */ | |
498 | /******************************************************************************/ | |
499 | /* SA_INTERRUPT- if set blocks all interrupts else only this line */ | |
500 | /* SA_SHIRQ - for shared irq PCI or maybe EISA only */ | |
501 | /* SA_RANDOM - can be source for cert. random number generators */ | |
502 | #define IP2_SA_FLAGS 0 | |
503 | ||
504 | int | |
505 | ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) | |
506 | { | |
507 | int i, j, box; | |
508 | int err = 0; | |
509 | int status = 0; | |
510 | static int loaded; | |
511 | i2eBordStrPtr pB = NULL; | |
512 | int rc = -1; | |
513 | ||
514 | ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 ); | |
515 | ||
516 | /* process command line arguments to modprobe or | |
517 | insmod i.e. iop & irqp */ | |
518 | /* irqp and iop should ALWAYS be specified now... But we check | |
519 | them individually just to be sure, anyways... */ | |
520 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
521 | if (iop) { | |
522 | ip2config.addr[i] = iop[i]; | |
523 | if (irqp) { | |
524 | if( irqp[i] >= 0 ) { | |
525 | ip2config.irq[i] = irqp[i]; | |
526 | } else { | |
527 | ip2config.irq[i] = 0; | |
528 | } | |
529 | // This is a little bit of a hack. If poll_only=1 on command | |
530 | // line back in ip2.c OR all IRQs on all specified boards are | |
531 | // explicitly set to 0, then drop to poll only mode and override | |
532 | // PCI or EISA interrupts. This superceeds the old hack of | |
533 | // triggering if all interrupts were zero (like da default). | |
534 | // Still a hack but less prone to random acts of terrorism. | |
535 | // | |
536 | // What we really should do, now that the IRQ default is set | |
537 | // to -1, is to use 0 as a hard coded, do not probe. | |
538 | // | |
539 | // /\/\|=mhw=|\/\/ | |
540 | poll_only |= irqp[i]; | |
541 | } | |
542 | } | |
543 | } | |
544 | poll_only = !poll_only; | |
545 | ||
546 | Fip_firmware = firmware; | |
547 | Fip_firmware_size = firmsize; | |
548 | ||
549 | /* Announce our presence */ | |
550 | printk( KERN_INFO "%s version %s\n", pcName, pcVersion ); | |
551 | ||
552 | // ip2 can be unloaded and reloaded for no good reason | |
553 | // we can't let that happen here or bad things happen | |
554 | // second load hoses board but not system - fixme later | |
555 | if (loaded) { | |
556 | printk( KERN_INFO "Still loaded\n" ); | |
557 | return 0; | |
558 | } | |
559 | loaded++; | |
560 | ||
561 | ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); | |
562 | if (!ip2_tty_driver) | |
563 | return -ENOMEM; | |
564 | ||
565 | /* Initialise the iiEllis subsystem. */ | |
566 | iiEllisInit(); | |
567 | ||
568 | /* Initialize arrays. */ | |
569 | memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable ); | |
570 | memset( DevTable, 0, sizeof DevTable ); | |
571 | ||
572 | /* Initialise all the boards we can find (up to the maximum). */ | |
573 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
574 | switch ( ip2config.addr[i] ) { | |
575 | case 0: /* skip this slot even if card is present */ | |
576 | break; | |
577 | default: /* ISA */ | |
578 | /* ISA address must be specified */ | |
579 | if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) { | |
580 | printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n", | |
581 | i, ip2config.addr[i] ); | |
582 | ip2config.addr[i] = 0; | |
583 | } else { | |
584 | ip2config.type[i] = ISA; | |
585 | ||
586 | /* Check for valid irq argument, set for polling if invalid */ | |
587 | if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) { | |
588 | printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]); | |
589 | ip2config.irq[i] = 0;// 0 is polling and is valid in that sense | |
590 | } | |
591 | } | |
592 | break; | |
593 | case PCI: | |
594 | #ifdef CONFIG_PCI | |
595 | { | |
596 | struct pci_dev *pci_dev_i = NULL; | |
597 | pci_dev_i = pci_find_device(PCI_VENDOR_ID_COMPUTONE, | |
598 | PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i); | |
599 | if (pci_dev_i != NULL) { | |
600 | unsigned int addr; | |
601 | ||
602 | if (pci_enable_device(pci_dev_i)) { | |
603 | printk( KERN_ERR "IP2: can't enable PCI device at %s\n", | |
604 | pci_name(pci_dev_i)); | |
605 | break; | |
606 | } | |
607 | ip2config.type[i] = PCI; | |
608 | ip2config.pci_dev[i] = pci_dev_i; | |
609 | status = | |
610 | pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr); | |
611 | if ( addr & 1 ) { | |
612 | ip2config.addr[i]=(USHORT)(addr&0xfffe); | |
613 | } else { | |
614 | printk( KERN_ERR "IP2: PCI I/O address error\n"); | |
615 | } | |
616 | ||
617 | // If the PCI BIOS assigned it, lets try and use it. If we | |
618 | // can't acquire it or it screws up, deal with it then. | |
619 | ||
620 | // if (!is_valid_irq(pci_irq)) { | |
621 | // printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq); | |
622 | // pci_irq = 0; | |
623 | // } | |
624 | ip2config.irq[i] = pci_dev_i->irq; | |
625 | } else { // ann error | |
626 | ip2config.addr[i] = 0; | |
627 | if (status == PCIBIOS_DEVICE_NOT_FOUND) { | |
628 | printk( KERN_ERR "IP2: PCI board %d not found\n", i ); | |
629 | } else { | |
630 | printk( KERN_ERR "IP2: PCI error 0x%x \n", status ); | |
631 | } | |
632 | } | |
633 | } | |
634 | #else | |
635 | printk( KERN_ERR "IP2: PCI card specified but PCI support not\n"); | |
636 | printk( KERN_ERR "IP2: configured in this kernel.\n"); | |
637 | printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n"); | |
638 | #endif /* CONFIG_PCI */ | |
639 | break; | |
640 | case EISA: | |
641 | if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) { | |
642 | /* Eisa_irq set as side effect, boo */ | |
643 | ip2config.type[i] = EISA; | |
644 | } | |
645 | ip2config.irq[i] = Eisa_irq; | |
646 | break; | |
647 | } /* switch */ | |
648 | } /* for */ | |
649 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
650 | if ( ip2config.addr[i] ) { | |
651 | pB = kmalloc( sizeof(i2eBordStr), GFP_KERNEL); | |
652 | if ( pB != NULL ) { | |
653 | i2BoardPtrTable[i] = pB; | |
654 | memset( pB, 0, sizeof(i2eBordStr) ); | |
655 | iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer ); | |
656 | iiReset( pB ); | |
657 | } else { | |
658 | printk(KERN_ERR "IP2: board memory allocation error\n"); | |
659 | } | |
660 | } | |
661 | } | |
662 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
663 | if ( ( pB = i2BoardPtrTable[i] ) != NULL ) { | |
664 | iiResetDelay( pB ); | |
665 | break; | |
666 | } | |
667 | } | |
668 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
669 | if ( i2BoardPtrTable[i] != NULL ) { | |
670 | ip2_init_board( i ); | |
671 | } | |
672 | } | |
673 | ||
674 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 ); | |
675 | ||
676 | ip2_tty_driver->owner = THIS_MODULE; | |
677 | ip2_tty_driver->name = "ttyF"; | |
678 | ip2_tty_driver->devfs_name = "tts/F"; | |
679 | ip2_tty_driver->driver_name = pcDriver_name; | |
680 | ip2_tty_driver->major = IP2_TTY_MAJOR; | |
681 | ip2_tty_driver->minor_start = 0; | |
682 | ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
683 | ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; | |
684 | ip2_tty_driver->init_termios = tty_std_termios; | |
685 | ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; | |
686 | ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; | |
687 | tty_set_operations(ip2_tty_driver, &ip2_ops); | |
688 | ||
689 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); | |
690 | ||
691 | /* Register the tty devices. */ | |
692 | if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) { | |
693 | printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err); | |
694 | put_tty_driver(ip2_tty_driver); | |
695 | return -EINVAL; | |
696 | } else | |
697 | /* Register the IPL driver. */ | |
698 | if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) { | |
699 | printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err ); | |
700 | } else { | |
701 | /* create the sysfs class */ | |
ca8eca68 | 702 | ip2_class = class_create(THIS_MODULE, "ip2"); |
1da177e4 LT |
703 | if (IS_ERR(ip2_class)) { |
704 | err = PTR_ERR(ip2_class); | |
705 | goto out_chrdev; | |
706 | } | |
707 | } | |
708 | /* Register the read_procmem thing */ | |
709 | if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) { | |
710 | printk(KERN_ERR "IP2: failed to register read_procmem\n"); | |
711 | } else { | |
712 | ||
713 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 ); | |
714 | /* Register the interrupt handler or poll handler, depending upon the | |
715 | * specified interrupt. | |
716 | */ | |
717 | ||
718 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
719 | if ( 0 == ip2config.addr[i] ) { | |
720 | continue; | |
721 | } | |
722 | ||
723 | if ( NULL != ( pB = i2BoardPtrTable[i] ) ) { | |
53f46542 GKH |
724 | class_device_create(ip2_class, NULL, |
725 | MKDEV(IP2_IPL_MAJOR, 4 * i), | |
726 | NULL, "ipl%d", i); | |
1da177e4 LT |
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) { | |
ca8eca68 | 731 | class_device_destroy(ip2_class, |
732 | MKDEV(IP2_IPL_MAJOR, 4 * i)); | |
1da177e4 LT |
733 | goto out_class; |
734 | } | |
735 | ||
53f46542 GKH |
736 | class_device_create(ip2_class, NULL, |
737 | MKDEV(IP2_IPL_MAJOR, 4 * i + 1), | |
738 | NULL, "stat%d", i); | |
1da177e4 LT |
739 | err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i + 1), |
740 | S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR, | |
741 | "ip2/stat%d", i); | |
742 | if (err) { | |
ca8eca68 | 743 | class_device_destroy(ip2_class, |
744 | MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); | |
1da177e4 LT |
745 | goto out_class; |
746 | } | |
747 | ||
748 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) | |
749 | { | |
750 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
751 | { | |
752 | if ( pB->i2eChannelMap[box] & (1 << j) ) | |
753 | { | |
754 | tty_register_device(ip2_tty_driver, | |
755 | j + ABS_BIGGEST_BOX * | |
756 | (box+i*ABS_MAX_BOXES), NULL); | |
757 | } | |
758 | } | |
759 | } | |
760 | } | |
761 | ||
762 | if (poll_only) { | |
763 | // Poll only forces driver to only use polling and | |
764 | // to ignore the probed PCI or EISA interrupts. | |
765 | ip2config.irq[i] = CIR_POLL; | |
766 | } | |
767 | if ( ip2config.irq[i] == CIR_POLL ) { | |
768 | retry: | |
769 | if (!TimerOn) { | |
770 | PollTimer.expires = POLL_TIMEOUT; | |
771 | add_timer ( &PollTimer ); | |
772 | TimerOn = 1; | |
773 | printk( KERN_INFO "IP2: polling\n"); | |
774 | } | |
775 | } else { | |
776 | if (have_requested_irq(ip2config.irq[i])) | |
777 | continue; | |
778 | rc = request_irq( ip2config.irq[i], ip2_interrupt, | |
779 | IP2_SA_FLAGS | (ip2config.type[i] == PCI ? SA_SHIRQ : 0), | |
780 | pcName, (void *)&pcName); | |
781 | if (rc) { | |
782 | printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc); | |
783 | ip2config.irq[i] = CIR_POLL; | |
784 | printk( KERN_INFO "IP2: Polling %ld/sec.\n", | |
785 | (POLL_TIMEOUT - jiffies)); | |
786 | goto retry; | |
787 | } | |
788 | mark_requested_irq(ip2config.irq[i]); | |
789 | /* Initialise the interrupt handler bottom half (aka slih). */ | |
790 | } | |
791 | } | |
792 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
793 | if ( i2BoardPtrTable[i] ) { | |
794 | set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */ | |
795 | } | |
796 | } | |
797 | } | |
798 | ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 ); | |
799 | goto out; | |
800 | ||
801 | out_class: | |
ca8eca68 | 802 | class_destroy(ip2_class); |
1da177e4 LT |
803 | out_chrdev: |
804 | unregister_chrdev(IP2_IPL_MAJOR, "ip2"); | |
805 | out: | |
806 | return err; | |
807 | } | |
808 | ||
809 | EXPORT_SYMBOL(ip2_loadmain); | |
810 | ||
811 | /******************************************************************************/ | |
812 | /* Function: ip2_init_board() */ | |
813 | /* Parameters: Index of board in configuration structure */ | |
814 | /* Returns: Success (0) */ | |
815 | /* */ | |
816 | /* Description: */ | |
817 | /* This function initializes the specified board. The loadware is copied to */ | |
818 | /* the board, the channel structures are initialized, and the board details */ | |
819 | /* are reported on the console. */ | |
820 | /******************************************************************************/ | |
673e321c | 821 | static void |
1da177e4 LT |
822 | ip2_init_board( int boardnum ) |
823 | { | |
824 | int i; | |
825 | int nports = 0, nboxes = 0; | |
826 | i2ChanStrPtr pCh; | |
827 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; | |
828 | ||
829 | if ( !iiInitialize ( pB ) ) { | |
830 | printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", | |
831 | pB->i2eBase, pB->i2eError ); | |
832 | goto err_initialize; | |
833 | } | |
834 | printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1, | |
835 | ip2config.addr[boardnum], ip2config.irq[boardnum] ); | |
836 | ||
837 | if (!request_region( ip2config.addr[boardnum], 8, pcName )) { | |
838 | printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]); | |
839 | goto err_initialize; | |
840 | } | |
841 | ||
842 | if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size ) | |
843 | != II_DOWN_GOOD ) { | |
844 | printk ( KERN_ERR "IP2: failed to download loadware\n" ); | |
845 | goto err_release_region; | |
846 | } else { | |
847 | printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n", | |
848 | pB->i2ePom.e.porVersion, | |
849 | pB->i2ePom.e.porRevision, | |
850 | pB->i2ePom.e.porSubRev, pB->i2eLVersion, | |
851 | pB->i2eLRevision, pB->i2eLSub ); | |
852 | } | |
853 | ||
854 | switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { | |
855 | ||
856 | default: | |
857 | printk( KERN_ERR "IP2: Unknown board type, ID = %x\n", | |
858 | pB->i2ePom.e.porID ); | |
859 | nports = 0; | |
860 | goto err_release_region; | |
861 | break; | |
862 | ||
863 | case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ | |
864 | printk ( KERN_INFO "IP2: ISA-4\n" ); | |
865 | nports = 4; | |
866 | break; | |
867 | ||
868 | case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ | |
869 | printk ( KERN_INFO "IP2: ISA-8 std\n" ); | |
870 | nports = 8; | |
871 | break; | |
872 | ||
873 | case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ | |
874 | printk ( KERN_INFO "IP2: ISA-8 RJ11\n" ); | |
875 | nports = 8; | |
876 | break; | |
877 | ||
878 | case POR_ID_FIIEX: /* IntelliPort IIEX */ | |
879 | { | |
880 | int portnum = IP2_PORTS_PER_BOARD * boardnum; | |
881 | int box; | |
882 | ||
883 | for( box = 0; box < ABS_MAX_BOXES; ++box ) { | |
884 | if ( pB->i2eChannelMap[box] != 0 ) { | |
885 | ++nboxes; | |
886 | } | |
887 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { | |
888 | if ( pB->i2eChannelMap[box] & 1<< i ) { | |
889 | ++nports; | |
890 | } | |
891 | } | |
892 | } | |
893 | DevTableMem[boardnum] = pCh = | |
894 | kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); | |
895 | if ( !pCh ) { | |
896 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); | |
897 | goto err_release_region; | |
898 | } | |
899 | if ( !i2InitChannels( pB, nports, pCh ) ) { | |
900 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); | |
901 | kfree ( pCh ); | |
902 | goto err_release_region; | |
903 | } | |
904 | pB->i2eChannelPtr = &DevTable[portnum]; | |
905 | pB->i2eChannelCnt = ABS_MOST_PORTS; | |
906 | ||
907 | for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { | |
908 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { | |
909 | if ( pB->i2eChannelMap[box] & (1 << i) ) { | |
910 | DevTable[portnum + i] = pCh; | |
911 | pCh->port_index = portnum + i; | |
912 | pCh++; | |
913 | } | |
914 | } | |
915 | } | |
916 | printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n", | |
917 | nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); | |
918 | } | |
919 | goto ex_exit; | |
920 | } | |
921 | DevTableMem[boardnum] = pCh = | |
922 | kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); | |
923 | if ( !pCh ) { | |
924 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); | |
925 | goto err_release_region; | |
926 | } | |
927 | pB->i2eChannelPtr = pCh; | |
928 | pB->i2eChannelCnt = nports; | |
929 | if ( !i2InitChannels( pB, nports, pCh ) ) { | |
930 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); | |
931 | kfree ( pCh ); | |
932 | goto err_release_region; | |
933 | } | |
934 | pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; | |
935 | ||
936 | for( i = 0; i < pB->i2eChannelCnt; ++i ) { | |
937 | DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; | |
938 | pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; | |
939 | pCh++; | |
940 | } | |
941 | ex_exit: | |
942 | INIT_WORK(&pB->tqueue_interrupt, (void(*)(void*)) ip2_interrupt_bh, pB); | |
943 | return; | |
944 | ||
945 | err_release_region: | |
946 | release_region(ip2config.addr[boardnum], 8); | |
947 | err_initialize: | |
948 | kfree ( pB ); | |
949 | i2BoardPtrTable[boardnum] = NULL; | |
950 | return; | |
951 | } | |
952 | ||
953 | /******************************************************************************/ | |
954 | /* Function: find_eisa_board ( int start_slot ) */ | |
955 | /* Parameters: First slot to check */ | |
956 | /* Returns: Address of EISA IntelliPort II controller */ | |
957 | /* */ | |
958 | /* Description: */ | |
959 | /* This function searches for an EISA IntelliPort controller, starting */ | |
960 | /* from the specified slot number. If the motherboard is not identified as an */ | |
961 | /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ | |
962 | /* it returns the base address of the controller. */ | |
963 | /******************************************************************************/ | |
673e321c | 964 | static unsigned short |
1da177e4 LT |
965 | find_eisa_board( int start_slot ) |
966 | { | |
967 | int i, j; | |
968 | unsigned int idm = 0; | |
969 | unsigned int idp = 0; | |
970 | unsigned int base = 0; | |
971 | unsigned int value; | |
972 | int setup_address; | |
973 | int setup_irq; | |
974 | int ismine = 0; | |
975 | ||
976 | /* | |
977 | * First a check for an EISA motherboard, which we do by comparing the | |
978 | * EISA ID registers for the system board and the first couple of slots. | |
979 | * No slot ID should match the system board ID, but on an ISA or PCI | |
980 | * machine the odds are that an empty bus will return similar values for | |
981 | * each slot. | |
982 | */ | |
983 | i = 0x0c80; | |
984 | value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); | |
985 | for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { | |
986 | j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); | |
987 | if ( value == j ) | |
988 | return 0; | |
989 | } | |
990 | ||
991 | /* | |
992 | * OK, so we are inclined to believe that this is an EISA machine. Find | |
993 | * an IntelliPort controller. | |
994 | */ | |
995 | for( i = start_slot; i < 16; i++ ) { | |
996 | base = i << 12; | |
997 | idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); | |
998 | idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); | |
999 | ismine = 0; | |
1000 | if ( idm == 0x0e8e ) { | |
1001 | if ( idp == 0x0281 || idp == 0x0218 ) { | |
1002 | ismine = 1; | |
1003 | } else if ( idp == 0x0282 || idp == 0x0283 ) { | |
1004 | ismine = 3; /* Can do edge-trigger */ | |
1005 | } | |
1006 | if ( ismine ) { | |
1007 | Eisa_slot = i; | |
1008 | break; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | if ( !ismine ) | |
1013 | return 0; | |
1014 | ||
1015 | /* It's some sort of EISA card, but at what address is it configured? */ | |
1016 | ||
1017 | setup_address = base + 0xc88; | |
1018 | value = inb(base + 0xc86); | |
1019 | setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; | |
1020 | ||
1021 | if ( (ismine & 2) && !(value & 0x10) ) { | |
1022 | ismine = 1; /* Could be edging, but not */ | |
1023 | } | |
1024 | ||
1025 | if ( Eisa_irq == 0 ) { | |
1026 | Eisa_irq = setup_irq; | |
1027 | } else if ( Eisa_irq != setup_irq ) { | |
1028 | printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); | |
1029 | } | |
1030 | ||
1031 | #ifdef IP2DEBUG_INIT | |
1032 | printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", | |
1033 | base >> 12, idm, idp, setup_address); | |
1034 | if ( Eisa_irq ) { | |
1035 | printk(KERN_DEBUG ", Interrupt %d %s\n", | |
1036 | setup_irq, (ismine & 2) ? "(edge)" : "(level)"); | |
1037 | } else { | |
1038 | printk(KERN_DEBUG ", (polled)\n"); | |
1039 | } | |
1040 | #endif | |
1041 | return setup_address; | |
1042 | } | |
1043 | ||
1044 | /******************************************************************************/ | |
1045 | /* Function: set_irq() */ | |
1046 | /* Parameters: index to board in board table */ | |
1047 | /* IRQ to use */ | |
1048 | /* Returns: Success (0) */ | |
1049 | /* */ | |
1050 | /* Description: */ | |
1051 | /******************************************************************************/ | |
1052 | static void | |
1053 | set_irq( int boardnum, int boardIrq ) | |
1054 | { | |
1055 | unsigned char tempCommand[16]; | |
1056 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; | |
1057 | unsigned long flags; | |
1058 | ||
1059 | /* | |
1060 | * Notify the boards they may generate interrupts. This is done by | |
1061 | * sending an in-line command to channel 0 on each board. This is why | |
1062 | * the channels have to be defined already. For each board, if the | |
1063 | * interrupt has never been defined, we must do so NOW, directly, since | |
1064 | * board will not send flow control or even give an interrupt until this | |
1065 | * is done. If polling we must send 0 as the interrupt parameter. | |
1066 | */ | |
1067 | ||
1068 | // We will get an interrupt here at the end of this function | |
1069 | ||
1070 | iiDisableMailIrq(pB); | |
1071 | ||
1072 | /* We build up the entire packet header. */ | |
1073 | CHANNEL_OF(tempCommand) = 0; | |
1074 | PTYPE_OF(tempCommand) = PTYPE_INLINE; | |
1075 | CMD_COUNT_OF(tempCommand) = 2; | |
1076 | (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; | |
1077 | (CMD_OF(tempCommand))[1] = boardIrq; | |
1078 | /* | |
1079 | * Write to FIFO; don't bother to adjust fifo capacity for this, since | |
1080 | * board will respond almost immediately after SendMail hit. | |
1081 | */ | |
1082 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); | |
1083 | iiWriteBuf(pB, tempCommand, 4); | |
1084 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); | |
1085 | pB->i2eUsingIrq = boardIrq; | |
1086 | pB->i2eOutMailWaiting |= MB_OUT_STUFFED; | |
1087 | ||
1088 | /* Need to update number of boards before you enable mailbox int */ | |
1089 | ++i2nBoards; | |
1090 | ||
1091 | CHANNEL_OF(tempCommand) = 0; | |
1092 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1093 | CMD_COUNT_OF(tempCommand) = 6; | |
1094 | (CMD_OF(tempCommand))[0] = 88; // SILO | |
1095 | (CMD_OF(tempCommand))[1] = 64; // chars | |
1096 | (CMD_OF(tempCommand))[2] = 32; // ms | |
1097 | ||
1098 | (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK | |
1099 | (CMD_OF(tempCommand))[4] = 64; // chars | |
1100 | ||
1101 | (CMD_OF(tempCommand))[5] = 87; // HW_TEST | |
1102 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); | |
1103 | iiWriteBuf(pB, tempCommand, 8); | |
1104 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); | |
1105 | ||
1106 | CHANNEL_OF(tempCommand) = 0; | |
1107 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1108 | CMD_COUNT_OF(tempCommand) = 1; | |
1109 | (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ | |
1110 | iiWriteBuf(pB, tempCommand, 3); | |
1111 | ||
1112 | #ifdef XXX | |
1113 | // enable heartbeat for test porpoises | |
1114 | CHANNEL_OF(tempCommand) = 0; | |
1115 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1116 | CMD_COUNT_OF(tempCommand) = 2; | |
1117 | (CMD_OF(tempCommand))[0] = 44; /* get ping */ | |
1118 | (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ | |
1119 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); | |
1120 | iiWriteBuf(pB, tempCommand, 4); | |
1121 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); | |
1122 | #endif | |
1123 | ||
1124 | iiEnableMailIrq(pB); | |
1125 | iiSendPendingMail(pB); | |
1126 | } | |
1127 | ||
1128 | /******************************************************************************/ | |
1129 | /* Interrupt Handler Section */ | |
1130 | /******************************************************************************/ | |
1131 | ||
1132 | static inline void | |
1133 | service_all_boards(void) | |
1134 | { | |
1135 | int i; | |
1136 | i2eBordStrPtr pB; | |
1137 | ||
1138 | /* Service every board on the list */ | |
1139 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
1140 | pB = i2BoardPtrTable[i]; | |
1141 | if ( pB ) { | |
1142 | i2ServiceBoard( pB ); | |
1143 | } | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | ||
1148 | /******************************************************************************/ | |
1149 | /* Function: ip2_interrupt_bh(pB) */ | |
1150 | /* Parameters: pB - pointer to the board structure */ | |
1151 | /* Returns: Nothing */ | |
1152 | /* */ | |
1153 | /* Description: */ | |
1154 | /* Service the board in a bottom half interrupt handler and then */ | |
1155 | /* reenable the board's interrupts if it has an IRQ number */ | |
1156 | /* */ | |
1157 | /******************************************************************************/ | |
1158 | static void | |
1159 | ip2_interrupt_bh(i2eBordStrPtr pB) | |
1160 | { | |
1161 | // pB better well be set or we have a problem! We can only get | |
1162 | // here from the IMMEDIATE queue. Here, we process the boards. | |
1163 | // Checking pB doesn't cost much and it saves us from the sanity checkers. | |
1164 | ||
1165 | bh_counter++; | |
1166 | ||
1167 | if ( pB ) { | |
1168 | i2ServiceBoard( pB ); | |
1169 | if( pB->i2eUsingIrq ) { | |
1170 | // Re-enable his interrupts | |
1171 | iiEnableMailIrq(pB); | |
1172 | } | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | ||
1177 | /******************************************************************************/ | |
1178 | /* Function: ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) */ | |
1179 | /* Parameters: irq - interrupt number */ | |
1180 | /* pointer to optional device ID structure */ | |
1181 | /* pointer to register structure */ | |
1182 | /* Returns: Nothing */ | |
1183 | /* */ | |
1184 | /* Description: */ | |
1185 | /* */ | |
1186 | /* Our task here is simply to identify each board which needs servicing. */ | |
1187 | /* If we are queuing then, queue it to be serviced, and disable its irq */ | |
1188 | /* mask otherwise process the board directly. */ | |
1189 | /* */ | |
1190 | /* We could queue by IRQ but that just complicates things on both ends */ | |
1191 | /* with very little gain in performance (how many instructions does */ | |
1192 | /* it take to iterate on the immediate queue). */ | |
1193 | /* */ | |
1194 | /* */ | |
1195 | /******************************************************************************/ | |
1196 | static irqreturn_t | |
1197 | ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) | |
1198 | { | |
1199 | int i; | |
1200 | i2eBordStrPtr pB; | |
1201 | int handled = 0; | |
1202 | ||
1203 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq ); | |
1204 | ||
1205 | /* Service just the boards on the list using this irq */ | |
1206 | for( i = 0; i < i2nBoards; ++i ) { | |
1207 | pB = i2BoardPtrTable[i]; | |
1208 | ||
1209 | // Only process those boards which match our IRQ. | |
1210 | // IRQ = 0 for polled boards, we won't poll "IRQ" boards | |
1211 | ||
1212 | if ( pB && (pB->i2eUsingIrq == irq) ) { | |
1213 | handled = 1; | |
1214 | #ifdef USE_IQI | |
1215 | ||
1216 | if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) { | |
1217 | // Disable his interrupt (will be enabled when serviced) | |
1218 | // This is mostly to protect from reentrancy. | |
1219 | iiDisableMailIrq(pB); | |
1220 | ||
1221 | // Park the board on the immediate queue for processing. | |
1222 | schedule_work(&pB->tqueue_interrupt); | |
1223 | ||
1224 | // Make sure the immediate queue is flagged to fire. | |
1225 | } | |
1226 | #else | |
1227 | // We are using immediate servicing here. This sucks and can | |
1228 | // cause all sorts of havoc with ppp and others. The failsafe | |
1229 | // check on iiSendPendingMail could also throw a hairball. | |
1230 | i2ServiceBoard( pB ); | |
1231 | #endif /* USE_IQI */ | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | ++irq_counter; | |
1236 | ||
1237 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
1238 | return IRQ_RETVAL(handled); | |
1239 | } | |
1240 | ||
1241 | /******************************************************************************/ | |
1242 | /* Function: ip2_poll(unsigned long arg) */ | |
1243 | /* Parameters: ? */ | |
1244 | /* Returns: Nothing */ | |
1245 | /* */ | |
1246 | /* Description: */ | |
1247 | /* This function calls the library routine i2ServiceBoard for each board in */ | |
1248 | /* the board table. This is used instead of the interrupt routine when polled */ | |
1249 | /* mode is specified. */ | |
1250 | /******************************************************************************/ | |
1251 | static void | |
1252 | ip2_poll(unsigned long arg) | |
1253 | { | |
1254 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); | |
1255 | ||
1256 | TimerOn = 0; // it's the truth but not checked in service | |
1257 | ||
1258 | // Just polled boards, IRQ = 0 will hit all non-interrupt boards. | |
1259 | // It will NOT poll boards handled by hard interrupts. | |
1260 | // The issue of queued BH interrups is handled in ip2_interrupt(). | |
1261 | ip2_interrupt(0, NULL, NULL); | |
1262 | ||
1263 | PollTimer.expires = POLL_TIMEOUT; | |
1264 | add_timer( &PollTimer ); | |
1265 | TimerOn = 1; | |
1266 | ||
1267 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
1268 | } | |
1269 | ||
1270 | static void do_input(void *p) | |
1271 | { | |
1272 | i2ChanStrPtr pCh = p; | |
1273 | unsigned long flags; | |
1274 | ||
1275 | ip2trace(CHANN, ITRC_INPUT, 21, 0 ); | |
1276 | ||
1277 | // Data input | |
1278 | if ( pCh->pTTY != NULL ) { | |
1279 | READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) | |
1280 | if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { | |
1281 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1282 | i2Input( pCh ); | |
1283 | } else | |
1284 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1285 | } else { | |
1286 | ip2trace(CHANN, ITRC_INPUT, 22, 0 ); | |
1287 | ||
1288 | i2InputFlush( pCh ); | |
1289 | } | |
1290 | } | |
1291 | ||
1292 | // code duplicated from n_tty (ldisc) | |
1293 | static inline void isig(int sig, struct tty_struct *tty, int flush) | |
1294 | { | |
1295 | if (tty->pgrp > 0) | |
1296 | kill_pg(tty->pgrp, sig, 1); | |
1297 | if (flush || !L_NOFLSH(tty)) { | |
1298 | if ( tty->ldisc.flush_buffer ) | |
1299 | tty->ldisc.flush_buffer(tty); | |
1300 | i2InputFlush( tty->driver_data ); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | static void do_status(void *p) | |
1305 | { | |
1306 | i2ChanStrPtr pCh = p; | |
1307 | int status; | |
1308 | ||
1309 | status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); | |
1310 | ||
1311 | ip2trace (CHANN, ITRC_STATUS, 21, 1, status ); | |
1312 | ||
1313 | if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { | |
1314 | if ( (status & I2_BRK) ) { | |
1315 | // code duplicated from n_tty (ldisc) | |
1316 | if (I_IGNBRK(pCh->pTTY)) | |
1317 | goto skip_this; | |
1318 | if (I_BRKINT(pCh->pTTY)) { | |
1319 | isig(SIGINT, pCh->pTTY, 1); | |
1320 | goto skip_this; | |
1321 | } | |
1322 | wake_up_interruptible(&pCh->pTTY->read_wait); | |
1323 | } | |
1324 | #ifdef NEVER_HAPPENS_AS_SETUP_XXX | |
1325 | // and can't work because we don't know the_char | |
1326 | // as the_char is reported on a separate path | |
1327 | // The intelligent board does this stuff as setup | |
1328 | { | |
1329 | char brkf = TTY_NORMAL; | |
1330 | unsigned char brkc = '\0'; | |
1331 | unsigned char tmp; | |
1332 | if ( (status & I2_BRK) ) { | |
1333 | brkf = TTY_BREAK; | |
1334 | brkc = '\0'; | |
1335 | } | |
1336 | else if (status & I2_PAR) { | |
1337 | brkf = TTY_PARITY; | |
1338 | brkc = the_char; | |
1339 | } else if (status & I2_FRA) { | |
1340 | brkf = TTY_FRAME; | |
1341 | brkc = the_char; | |
1342 | } else if (status & I2_OVR) { | |
1343 | brkf = TTY_OVERRUN; | |
1344 | brkc = the_char; | |
1345 | } | |
1346 | tmp = pCh->pTTY->real_raw; | |
1347 | pCh->pTTY->real_raw = 0; | |
1348 | pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); | |
1349 | pCh->pTTY->real_raw = tmp; | |
1350 | } | |
1351 | #endif /* NEVER_HAPPENS_AS_SETUP_XXX */ | |
1352 | } | |
1353 | skip_this: | |
1354 | ||
1355 | if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { | |
1356 | wake_up_interruptible(&pCh->delta_msr_wait); | |
1357 | ||
1358 | if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { | |
1359 | if ( status & I2_DCD ) { | |
1360 | if ( pCh->wopen ) { | |
1361 | wake_up_interruptible ( &pCh->open_wait ); | |
1362 | } | |
1363 | } else { | |
1364 | if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { | |
1365 | tty_hangup( pCh->pTTY ); | |
1366 | } | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | ip2trace (CHANN, ITRC_STATUS, 26, 0 ); | |
1372 | } | |
1373 | ||
1374 | /******************************************************************************/ | |
1375 | /* Device Open/Close/Ioctl Entry Point Section */ | |
1376 | /******************************************************************************/ | |
1377 | ||
1378 | /******************************************************************************/ | |
1379 | /* Function: open_sanity_check() */ | |
1380 | /* Parameters: Pointer to tty structure */ | |
1381 | /* Pointer to file structure */ | |
1382 | /* Returns: Success or failure */ | |
1383 | /* */ | |
1384 | /* Description: */ | |
1385 | /* Verifies the structure magic numbers and cross links. */ | |
1386 | /******************************************************************************/ | |
1387 | #ifdef IP2DEBUG_OPEN | |
1388 | static void | |
1389 | open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) | |
1390 | { | |
1391 | if ( pBrd->i2eValid != I2E_MAGIC ) { | |
1392 | printk(KERN_ERR "IP2: invalid board structure\n" ); | |
1393 | } else if ( pBrd != pCh->pMyBord ) { | |
1394 | printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", | |
1395 | pCh->pMyBord ); | |
1396 | } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { | |
1397 | printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); | |
1398 | } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { | |
1399 | } else { | |
1400 | printk(KERN_INFO "IP2: all pointers check out!\n" ); | |
1401 | } | |
1402 | } | |
1403 | #endif | |
1404 | ||
1405 | ||
1406 | /******************************************************************************/ | |
1407 | /* Function: ip2_open() */ | |
1408 | /* Parameters: Pointer to tty structure */ | |
1409 | /* Pointer to file structure */ | |
1410 | /* Returns: Success or failure */ | |
1411 | /* */ | |
1412 | /* Description: (MANDATORY) */ | |
1413 | /* A successful device open has to run a gauntlet of checks before it */ | |
1414 | /* completes. After some sanity checking and pointer setup, the function */ | |
1415 | /* blocks until all conditions are satisfied. It then initialises the port to */ | |
1416 | /* the default characteristics and returns. */ | |
1417 | /******************************************************************************/ | |
1418 | static int | |
1419 | ip2_open( PTTY tty, struct file *pFile ) | |
1420 | { | |
1421 | wait_queue_t wait; | |
1422 | int rc = 0; | |
1423 | int do_clocal = 0; | |
1424 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1425 | ||
1426 | ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 ); | |
1427 | ||
1428 | if ( pCh == NULL ) { | |
1429 | return -ENODEV; | |
1430 | } | |
1431 | /* Setup pointer links in device and tty structures */ | |
1432 | pCh->pTTY = tty; | |
1433 | tty->driver_data = pCh; | |
1434 | ||
1435 | #ifdef IP2DEBUG_OPEN | |
1436 | printk(KERN_DEBUG \ | |
1437 | "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n", | |
1438 | tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index); | |
1439 | open_sanity_check ( pCh, pCh->pMyBord ); | |
1440 | #endif | |
1441 | ||
1442 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP); | |
1443 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
1444 | serviceOutgoingFifo( pCh->pMyBord ); | |
1445 | ||
1446 | /* Block here until the port is ready (per serial and istallion) */ | |
1447 | /* | |
1448 | * 1. If the port is in the middle of closing wait for the completion | |
1449 | * and then return the appropriate error. | |
1450 | */ | |
1451 | init_waitqueue_entry(&wait, current); | |
1452 | add_wait_queue(&pCh->close_wait, &wait); | |
1453 | set_current_state( TASK_INTERRUPTIBLE ); | |
1454 | ||
1455 | if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { | |
1456 | if ( pCh->flags & ASYNC_CLOSING ) { | |
1457 | schedule(); | |
1458 | } | |
1459 | if ( tty_hung_up_p(pFile) ) { | |
1460 | set_current_state( TASK_RUNNING ); | |
1461 | remove_wait_queue(&pCh->close_wait, &wait); | |
1462 | return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; | |
1463 | } | |
1464 | } | |
1465 | set_current_state( TASK_RUNNING ); | |
1466 | remove_wait_queue(&pCh->close_wait, &wait); | |
1467 | ||
1468 | /* | |
1469 | * 3. Handle a non-blocking open of a normal port. | |
1470 | */ | |
1471 | if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) { | |
1472 | pCh->flags |= ASYNC_NORMAL_ACTIVE; | |
1473 | goto noblock; | |
1474 | } | |
1475 | /* | |
1476 | * 4. Now loop waiting for the port to be free and carrier present | |
1477 | * (if required). | |
1478 | */ | |
1479 | if ( tty->termios->c_cflag & CLOCAL ) | |
1480 | do_clocal = 1; | |
1481 | ||
1482 | #ifdef IP2DEBUG_OPEN | |
1483 | printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); | |
1484 | #endif | |
1485 | ||
1486 | ++pCh->wopen; | |
1487 | ||
1488 | init_waitqueue_entry(&wait, current); | |
1489 | add_wait_queue(&pCh->open_wait, &wait); | |
1490 | ||
1491 | for(;;) { | |
1492 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); | |
1493 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
1494 | set_current_state( TASK_INTERRUPTIBLE ); | |
1495 | serviceOutgoingFifo( pCh->pMyBord ); | |
1496 | if ( tty_hung_up_p(pFile) ) { | |
1497 | set_current_state( TASK_RUNNING ); | |
1498 | remove_wait_queue(&pCh->open_wait, &wait); | |
1499 | return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; | |
1500 | } | |
1501 | if (!(pCh->flags & ASYNC_CLOSING) && | |
1502 | (do_clocal || (pCh->dataSetIn & I2_DCD) )) { | |
1503 | rc = 0; | |
1504 | break; | |
1505 | } | |
1506 | ||
1507 | #ifdef IP2DEBUG_OPEN | |
1508 | printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", | |
1509 | (pCh->flags & ASYNC_CLOSING)?"True":"False"); | |
1510 | printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); | |
1511 | #endif | |
1512 | ip2trace (CHANN, ITRC_OPEN, 3, 2, 0, | |
1513 | (pCh->flags & ASYNC_CLOSING) ); | |
1514 | /* check for signal */ | |
1515 | if (signal_pending(current)) { | |
1516 | rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); | |
1517 | break; | |
1518 | } | |
1519 | schedule(); | |
1520 | } | |
1521 | set_current_state( TASK_RUNNING ); | |
1522 | remove_wait_queue(&pCh->open_wait, &wait); | |
1523 | ||
1524 | --pCh->wopen; //why count? | |
1525 | ||
1526 | ip2trace (CHANN, ITRC_OPEN, 4, 0 ); | |
1527 | ||
1528 | if (rc != 0 ) { | |
1529 | return rc; | |
1530 | } | |
1531 | pCh->flags |= ASYNC_NORMAL_ACTIVE; | |
1532 | ||
1533 | noblock: | |
1534 | ||
1535 | /* first open - Assign termios structure to port */ | |
1536 | if ( tty->count == 1 ) { | |
1537 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
1538 | /* Now we must send the termios settings to the loadware */ | |
1539 | set_params( pCh, NULL ); | |
1540 | } | |
1541 | ||
1542 | /* | |
1543 | * Now set any i2lib options. These may go away if the i2lib code ends | |
1544 | * up rolled into the mainline. | |
1545 | */ | |
1546 | pCh->channelOptions |= CO_NBLOCK_WRITE; | |
1547 | ||
1548 | #ifdef IP2DEBUG_OPEN | |
1549 | printk (KERN_DEBUG "IP2: open completed\n" ); | |
1550 | #endif | |
1551 | serviceOutgoingFifo( pCh->pMyBord ); | |
1552 | ||
1553 | ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 ); | |
1554 | ||
1555 | return 0; | |
1556 | } | |
1557 | ||
1558 | /******************************************************************************/ | |
1559 | /* Function: ip2_close() */ | |
1560 | /* Parameters: Pointer to tty structure */ | |
1561 | /* Pointer to file structure */ | |
1562 | /* Returns: Nothing */ | |
1563 | /* */ | |
1564 | /* Description: */ | |
1565 | /* */ | |
1566 | /* */ | |
1567 | /******************************************************************************/ | |
1568 | static void | |
1569 | ip2_close( PTTY tty, struct file *pFile ) | |
1570 | { | |
1571 | i2ChanStrPtr pCh = tty->driver_data; | |
1572 | ||
1573 | if ( !pCh ) { | |
1574 | return; | |
1575 | } | |
1576 | ||
1577 | ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 ); | |
1578 | ||
1579 | #ifdef IP2DEBUG_OPEN | |
1580 | printk(KERN_DEBUG "IP2:close %s:\n",tty->name); | |
1581 | #endif | |
1582 | ||
1583 | if ( tty_hung_up_p ( pFile ) ) { | |
1584 | ||
1585 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 ); | |
1586 | ||
1587 | return; | |
1588 | } | |
1589 | if ( tty->count > 1 ) { /* not the last close */ | |
1590 | ||
1591 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 ); | |
1592 | ||
1593 | return; | |
1594 | } | |
1595 | pCh->flags |= ASYNC_CLOSING; // last close actually | |
1596 | ||
1597 | tty->closing = 1; | |
1598 | ||
1599 | if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { | |
1600 | /* | |
1601 | * Before we drop DTR, make sure the transmitter has completely drained. | |
1602 | * This uses an timeout, after which the close | |
1603 | * completes. | |
1604 | */ | |
1605 | ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); | |
1606 | } | |
1607 | /* | |
1608 | * At this point we stop accepting input. Here we flush the channel | |
1609 | * input buffer which will allow the board to send up more data. Any | |
1610 | * additional input is tossed at interrupt/poll time. | |
1611 | */ | |
1612 | i2InputFlush( pCh ); | |
1613 | ||
1614 | /* disable DSS reporting */ | |
1615 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 4, | |
1616 | CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
1617 | if ( !tty || (tty->termios->c_cflag & HUPCL) ) { | |
1618 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); | |
1619 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
1620 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
1621 | } | |
1622 | ||
1623 | serviceOutgoingFifo ( pCh->pMyBord ); | |
1624 | ||
1625 | if ( tty->driver->flush_buffer ) | |
1626 | tty->driver->flush_buffer(tty); | |
1627 | if ( tty->ldisc.flush_buffer ) | |
1628 | tty->ldisc.flush_buffer(tty); | |
1629 | tty->closing = 0; | |
1630 | ||
1631 | pCh->pTTY = NULL; | |
1632 | ||
1633 | if (pCh->wopen) { | |
1634 | if (pCh->ClosingDelay) { | |
1635 | msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay)); | |
1636 | } | |
1637 | wake_up_interruptible(&pCh->open_wait); | |
1638 | } | |
1639 | ||
1640 | pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1641 | wake_up_interruptible(&pCh->close_wait); | |
1642 | ||
1643 | #ifdef IP2DEBUG_OPEN | |
1644 | DBG_CNT("ip2_close: after wakeups--"); | |
1645 | #endif | |
1646 | ||
1647 | ||
1648 | ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); | |
1649 | ||
1650 | return; | |
1651 | } | |
1652 | ||
1653 | /******************************************************************************/ | |
1654 | /* Function: ip2_hangup() */ | |
1655 | /* Parameters: Pointer to tty structure */ | |
1656 | /* Returns: Nothing */ | |
1657 | /* */ | |
1658 | /* Description: */ | |
1659 | /* */ | |
1660 | /* */ | |
1661 | /******************************************************************************/ | |
1662 | static void | |
1663 | ip2_hangup ( PTTY tty ) | |
1664 | { | |
1665 | i2ChanStrPtr pCh = tty->driver_data; | |
1666 | ||
1667 | if( !pCh ) { | |
1668 | return; | |
1669 | } | |
1670 | ||
1671 | ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 ); | |
1672 | ||
1673 | ip2_flush_buffer(tty); | |
1674 | ||
1675 | /* disable DSS reporting */ | |
1676 | ||
1677 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); | |
1678 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
1679 | if ( (tty->termios->c_cflag & HUPCL) ) { | |
1680 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); | |
1681 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
1682 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
1683 | } | |
1684 | i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, | |
1685 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
1686 | serviceOutgoingFifo ( pCh->pMyBord ); | |
1687 | ||
1688 | wake_up_interruptible ( &pCh->delta_msr_wait ); | |
1689 | ||
1690 | pCh->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1691 | pCh->pTTY = NULL; | |
1692 | wake_up_interruptible ( &pCh->open_wait ); | |
1693 | ||
1694 | ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 ); | |
1695 | } | |
1696 | ||
1697 | /******************************************************************************/ | |
1698 | /******************************************************************************/ | |
1699 | /* Device Output Section */ | |
1700 | /******************************************************************************/ | |
1701 | /******************************************************************************/ | |
1702 | ||
1703 | /******************************************************************************/ | |
1704 | /* Function: ip2_write() */ | |
1705 | /* Parameters: Pointer to tty structure */ | |
1706 | /* Flag denoting data is in user (1) or kernel (0) space */ | |
1707 | /* Pointer to data */ | |
1708 | /* Number of bytes to write */ | |
1709 | /* Returns: Number of bytes actually written */ | |
1710 | /* */ | |
1711 | /* Description: (MANDATORY) */ | |
1712 | /* */ | |
1713 | /* */ | |
1714 | /******************************************************************************/ | |
1715 | static int | |
d9e39538 | 1716 | ip2_write( PTTY tty, const unsigned char *pData, int count) |
1da177e4 LT |
1717 | { |
1718 | i2ChanStrPtr pCh = tty->driver_data; | |
1719 | int bytesSent = 0; | |
1720 | unsigned long flags; | |
1721 | ||
1722 | ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); | |
1723 | ||
1724 | /* Flush out any buffered data left over from ip2_putchar() calls. */ | |
1725 | ip2_flush_chars( tty ); | |
1726 | ||
1727 | /* This is the actual move bit. Make sure it does what we need!!!!! */ | |
1728 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
d9e39538 | 1729 | bytesSent = i2Output( pCh, pData, count, 0 ); |
1da177e4 LT |
1730 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1731 | ||
1732 | ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); | |
1733 | ||
1734 | return bytesSent > 0 ? bytesSent : 0; | |
1735 | } | |
1736 | ||
1737 | /******************************************************************************/ | |
1738 | /* Function: ip2_putchar() */ | |
1739 | /* Parameters: Pointer to tty structure */ | |
1740 | /* Character to write */ | |
1741 | /* Returns: Nothing */ | |
1742 | /* */ | |
1743 | /* Description: */ | |
1744 | /* */ | |
1745 | /* */ | |
1746 | /******************************************************************************/ | |
1747 | static void | |
1748 | ip2_putchar( PTTY tty, unsigned char ch ) | |
1749 | { | |
1750 | i2ChanStrPtr pCh = tty->driver_data; | |
1751 | unsigned long flags; | |
1752 | ||
1753 | // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); | |
1754 | ||
1755 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1756 | pCh->Pbuf[pCh->Pbuf_stuff++] = ch; | |
1757 | if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { | |
1758 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1759 | ip2_flush_chars( tty ); | |
1760 | } else | |
1761 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1762 | ||
1763 | // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); | |
1764 | } | |
1765 | ||
1766 | /******************************************************************************/ | |
1767 | /* Function: ip2_flush_chars() */ | |
1768 | /* Parameters: Pointer to tty structure */ | |
1769 | /* Returns: Nothing */ | |
1770 | /* */ | |
1771 | /* Description: */ | |
1772 | /* */ | |
1773 | /******************************************************************************/ | |
1774 | static void | |
1775 | ip2_flush_chars( PTTY tty ) | |
1776 | { | |
1777 | int strip; | |
1778 | i2ChanStrPtr pCh = tty->driver_data; | |
1779 | unsigned long flags; | |
1780 | ||
1781 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1782 | if ( pCh->Pbuf_stuff ) { | |
1783 | ||
1784 | // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); | |
1785 | ||
1786 | // | |
1787 | // We may need to restart i2Output if it does not fullfill this request | |
1788 | // | |
1789 | strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff, 0 ); | |
1790 | if ( strip != pCh->Pbuf_stuff ) { | |
1791 | memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); | |
1792 | } | |
1793 | pCh->Pbuf_stuff -= strip; | |
1794 | } | |
1795 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1796 | } | |
1797 | ||
1798 | /******************************************************************************/ | |
1799 | /* Function: ip2_write_room() */ | |
1800 | /* Parameters: Pointer to tty structure */ | |
1801 | /* Returns: Number of bytes that the driver can accept */ | |
1802 | /* */ | |
1803 | /* Description: */ | |
1804 | /* */ | |
1805 | /******************************************************************************/ | |
1806 | static int | |
1807 | ip2_write_room ( PTTY tty ) | |
1808 | { | |
1809 | int bytesFree; | |
1810 | i2ChanStrPtr pCh = tty->driver_data; | |
1811 | unsigned long flags; | |
1812 | ||
1813 | READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1814 | bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; | |
1815 | READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1816 | ||
1817 | ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); | |
1818 | ||
1819 | return ((bytesFree > 0) ? bytesFree : 0); | |
1820 | } | |
1821 | ||
1822 | /******************************************************************************/ | |
1823 | /* Function: ip2_chars_in_buf() */ | |
1824 | /* Parameters: Pointer to tty structure */ | |
1825 | /* Returns: Number of bytes queued for transmission */ | |
1826 | /* */ | |
1827 | /* Description: */ | |
1828 | /* */ | |
1829 | /* */ | |
1830 | /******************************************************************************/ | |
1831 | static int | |
1832 | ip2_chars_in_buf ( PTTY tty ) | |
1833 | { | |
1834 | i2ChanStrPtr pCh = tty->driver_data; | |
1835 | int rc; | |
1836 | unsigned long flags; | |
1837 | ||
1838 | ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); | |
1839 | ||
1840 | #ifdef IP2DEBUG_WRITE | |
1841 | printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", | |
1842 | pCh->Obuf_char_count + pCh->Pbuf_stuff, | |
1843 | pCh->Obuf_char_count, pCh->Pbuf_stuff ); | |
1844 | #endif | |
1845 | READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); | |
1846 | rc = pCh->Obuf_char_count; | |
1847 | READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); | |
1848 | READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1849 | rc += pCh->Pbuf_stuff; | |
1850 | READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1851 | return rc; | |
1852 | } | |
1853 | ||
1854 | /******************************************************************************/ | |
1855 | /* Function: ip2_flush_buffer() */ | |
1856 | /* Parameters: Pointer to tty structure */ | |
1857 | /* Returns: Nothing */ | |
1858 | /* */ | |
1859 | /* Description: */ | |
1860 | /* */ | |
1861 | /* */ | |
1862 | /******************************************************************************/ | |
1863 | static void | |
1864 | ip2_flush_buffer( PTTY tty ) | |
1865 | { | |
1866 | i2ChanStrPtr pCh = tty->driver_data; | |
1867 | unsigned long flags; | |
1868 | ||
1869 | ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 ); | |
1870 | ||
1871 | #ifdef IP2DEBUG_WRITE | |
1872 | printk (KERN_DEBUG "IP2: flush buffer\n" ); | |
1873 | #endif | |
1874 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1875 | pCh->Pbuf_stuff = 0; | |
1876 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1877 | i2FlushOutput( pCh ); | |
1878 | ip2_owake(tty); | |
1879 | ||
1880 | ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 ); | |
1881 | ||
1882 | } | |
1883 | ||
1884 | /******************************************************************************/ | |
1885 | /* Function: ip2_wait_until_sent() */ | |
1886 | /* Parameters: Pointer to tty structure */ | |
1887 | /* Timeout for wait. */ | |
1888 | /* Returns: Nothing */ | |
1889 | /* */ | |
1890 | /* Description: */ | |
1891 | /* This function is used in place of the normal tty_wait_until_sent, which */ | |
1892 | /* only waits for the driver buffers to be empty (or rather, those buffers */ | |
1893 | /* reported by chars_in_buffer) which doesn't work for IP2 due to the */ | |
1894 | /* indeterminate number of bytes buffered on the board. */ | |
1895 | /******************************************************************************/ | |
1896 | static void | |
1897 | ip2_wait_until_sent ( PTTY tty, int timeout ) | |
1898 | { | |
1899 | int i = jiffies; | |
1900 | i2ChanStrPtr pCh = tty->driver_data; | |
1901 | ||
1902 | tty_wait_until_sent(tty, timeout ); | |
1903 | if ( (i = timeout - (jiffies -i)) > 0) | |
1904 | i2DrainOutput( pCh, i ); | |
1905 | } | |
1906 | ||
1907 | /******************************************************************************/ | |
1908 | /******************************************************************************/ | |
1909 | /* Device Input Section */ | |
1910 | /******************************************************************************/ | |
1911 | /******************************************************************************/ | |
1912 | ||
1913 | /******************************************************************************/ | |
1914 | /* Function: ip2_throttle() */ | |
1915 | /* Parameters: Pointer to tty structure */ | |
1916 | /* Returns: Nothing */ | |
1917 | /* */ | |
1918 | /* Description: */ | |
1919 | /* */ | |
1920 | /* */ | |
1921 | /******************************************************************************/ | |
1922 | static void | |
1923 | ip2_throttle ( PTTY tty ) | |
1924 | { | |
1925 | i2ChanStrPtr pCh = tty->driver_data; | |
1926 | ||
1927 | #ifdef IP2DEBUG_READ | |
1928 | printk (KERN_DEBUG "IP2: throttle\n" ); | |
1929 | #endif | |
1930 | /* | |
1931 | * Signal the poll/interrupt handlers not to forward incoming data to | |
1932 | * the line discipline. This will cause the buffers to fill up in the | |
1933 | * library and thus cause the library routines to send the flow control | |
1934 | * stuff. | |
1935 | */ | |
1936 | pCh->throttled = 1; | |
1937 | } | |
1938 | ||
1939 | /******************************************************************************/ | |
1940 | /* Function: ip2_unthrottle() */ | |
1941 | /* Parameters: Pointer to tty structure */ | |
1942 | /* Returns: Nothing */ | |
1943 | /* */ | |
1944 | /* Description: */ | |
1945 | /* */ | |
1946 | /* */ | |
1947 | /******************************************************************************/ | |
1948 | static void | |
1949 | ip2_unthrottle ( PTTY tty ) | |
1950 | { | |
1951 | i2ChanStrPtr pCh = tty->driver_data; | |
1952 | unsigned long flags; | |
1953 | ||
1954 | #ifdef IP2DEBUG_READ | |
1955 | printk (KERN_DEBUG "IP2: unthrottle\n" ); | |
1956 | #endif | |
1957 | ||
1958 | /* Pass incoming data up to the line discipline again. */ | |
1959 | pCh->throttled = 0; | |
1960 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); | |
1961 | serviceOutgoingFifo( pCh->pMyBord ); | |
1962 | READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) | |
1963 | if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { | |
1964 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1965 | #ifdef IP2DEBUG_READ | |
1966 | printk (KERN_DEBUG "i2Input called from unthrottle\n" ); | |
1967 | #endif | |
1968 | i2Input( pCh ); | |
1969 | } else | |
1970 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1971 | } | |
1972 | ||
1973 | static void | |
1974 | ip2_start ( PTTY tty ) | |
1975 | { | |
1976 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1977 | ||
1978 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); | |
1979 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); | |
1980 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); | |
1981 | #ifdef IP2DEBUG_WRITE | |
1982 | printk (KERN_DEBUG "IP2: start tx\n" ); | |
1983 | #endif | |
1984 | } | |
1985 | ||
1986 | static void | |
1987 | ip2_stop ( PTTY tty ) | |
1988 | { | |
1989 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1990 | ||
1991 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); | |
1992 | #ifdef IP2DEBUG_WRITE | |
1993 | printk (KERN_DEBUG "IP2: stop tx\n" ); | |
1994 | #endif | |
1995 | } | |
1996 | ||
1997 | /******************************************************************************/ | |
1998 | /* Device Ioctl Section */ | |
1999 | /******************************************************************************/ | |
2000 | ||
2001 | static int ip2_tiocmget(struct tty_struct *tty, struct file *file) | |
2002 | { | |
2003 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
d9e39538 | 2004 | #ifdef ENABLE_DSSNOW |
1da177e4 | 2005 | wait_queue_t wait; |
d9e39538 | 2006 | #endif |
1da177e4 LT |
2007 | |
2008 | if (pCh == NULL) | |
2009 | return -ENODEV; | |
2010 | ||
2011 | /* | |
2012 | FIXME - the following code is causing a NULL pointer dereference in | |
2013 | 2.3.51 in an interrupt handler. It's suppose to prompt the board | |
2014 | to return the DSS signal status immediately. Why doesn't it do | |
2015 | the same thing in 2.2.14? | |
2016 | */ | |
2017 | ||
2018 | /* This thing is still busted in the 1.2.12 driver on 2.4.x | |
2019 | and even hoses the serial console so the oops can be trapped. | |
2020 | /\/\|=mhw=|\/\/ */ | |
2021 | ||
2022 | #ifdef ENABLE_DSSNOW | |
2023 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW); | |
2024 | ||
2025 | init_waitqueue_entry(&wait, current); | |
2026 | add_wait_queue(&pCh->dss_now_wait, &wait); | |
2027 | set_current_state( TASK_INTERRUPTIBLE ); | |
2028 | ||
2029 | serviceOutgoingFifo( pCh->pMyBord ); | |
2030 | ||
2031 | schedule(); | |
2032 | ||
2033 | set_current_state( TASK_RUNNING ); | |
2034 | remove_wait_queue(&pCh->dss_now_wait, &wait); | |
2035 | ||
2036 | if (signal_pending(current)) { | |
2037 | return -EINTR; | |
2038 | } | |
2039 | #endif | |
2040 | return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) | |
2041 | | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) | |
2042 | | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0) | |
2043 | | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0) | |
2044 | | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0) | |
2045 | | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); | |
2046 | } | |
2047 | ||
2048 | static int ip2_tiocmset(struct tty_struct *tty, struct file *file, | |
2049 | unsigned int set, unsigned int clear) | |
2050 | { | |
2051 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
2052 | ||
2053 | if (pCh == NULL) | |
2054 | return -ENODEV; | |
2055 | ||
2056 | if (set & TIOCM_RTS) { | |
2057 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); | |
2058 | pCh->dataSetOut |= I2_RTS; | |
2059 | } | |
2060 | if (set & TIOCM_DTR) { | |
2061 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); | |
2062 | pCh->dataSetOut |= I2_DTR; | |
2063 | } | |
2064 | ||
2065 | if (clear & TIOCM_RTS) { | |
2066 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); | |
2067 | pCh->dataSetOut &= ~I2_RTS; | |
2068 | } | |
2069 | if (clear & TIOCM_DTR) { | |
2070 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); | |
2071 | pCh->dataSetOut &= ~I2_DTR; | |
2072 | } | |
2073 | serviceOutgoingFifo( pCh->pMyBord ); | |
2074 | return 0; | |
2075 | } | |
2076 | ||
2077 | /******************************************************************************/ | |
2078 | /* Function: ip2_ioctl() */ | |
2079 | /* Parameters: Pointer to tty structure */ | |
2080 | /* Pointer to file structure */ | |
2081 | /* Command */ | |
2082 | /* Argument */ | |
2083 | /* Returns: Success or failure */ | |
2084 | /* */ | |
2085 | /* Description: */ | |
2086 | /* */ | |
2087 | /* */ | |
2088 | /******************************************************************************/ | |
2089 | static int | |
2090 | ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) | |
2091 | { | |
2092 | wait_queue_t wait; | |
2093 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
d9e39538 | 2094 | i2eBordStrPtr pB; |
1da177e4 LT |
2095 | struct async_icount cprev, cnow; /* kernel counter temps */ |
2096 | struct serial_icounter_struct __user *p_cuser; | |
2097 | int rc = 0; | |
2098 | unsigned long flags; | |
2099 | void __user *argp = (void __user *)arg; | |
2100 | ||
d9e39538 | 2101 | if ( pCh == NULL ) |
1da177e4 | 2102 | return -ENODEV; |
d9e39538 AC |
2103 | |
2104 | pB = pCh->pMyBord; | |
1da177e4 LT |
2105 | |
2106 | ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); | |
2107 | ||
2108 | #ifdef IP2DEBUG_IOCTL | |
2109 | printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); | |
2110 | #endif | |
2111 | ||
2112 | switch(cmd) { | |
2113 | case TIOCGSERIAL: | |
2114 | ||
2115 | ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc ); | |
2116 | ||
2117 | rc = get_serial_info(pCh, argp); | |
2118 | if (rc) | |
2119 | return rc; | |
2120 | break; | |
2121 | ||
2122 | case TIOCSSERIAL: | |
2123 | ||
2124 | ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc ); | |
2125 | ||
2126 | rc = set_serial_info(pCh, argp); | |
2127 | if (rc) | |
2128 | return rc; | |
2129 | break; | |
2130 | ||
2131 | case TCXONC: | |
2132 | rc = tty_check_change(tty); | |
2133 | if (rc) | |
2134 | return rc; | |
2135 | switch (arg) { | |
2136 | case TCOOFF: | |
2137 | //return -ENOIOCTLCMD; | |
2138 | break; | |
2139 | case TCOON: | |
2140 | //return -ENOIOCTLCMD; | |
2141 | break; | |
2142 | case TCIOFF: | |
2143 | if (STOP_CHAR(tty) != __DISABLED_CHAR) { | |
2144 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, | |
2145 | CMD_XMIT_NOW(STOP_CHAR(tty))); | |
2146 | } | |
2147 | break; | |
2148 | case TCION: | |
2149 | if (START_CHAR(tty) != __DISABLED_CHAR) { | |
2150 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, | |
2151 | CMD_XMIT_NOW(START_CHAR(tty))); | |
2152 | } | |
2153 | break; | |
2154 | default: | |
2155 | return -EINVAL; | |
2156 | } | |
2157 | return 0; | |
2158 | ||
2159 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
2160 | rc = tty_check_change(tty); | |
2161 | ||
2162 | ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc ); | |
2163 | ||
2164 | if (!rc) { | |
2165 | ip2_wait_until_sent(tty,0); | |
2166 | if (!arg) { | |
2167 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); | |
2168 | serviceOutgoingFifo( pCh->pMyBord ); | |
2169 | } | |
2170 | } | |
2171 | break; | |
2172 | ||
2173 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
2174 | rc = tty_check_change(tty); | |
2175 | ||
2176 | ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc ); | |
2177 | ||
2178 | if (!rc) { | |
2179 | ip2_wait_until_sent(tty,0); | |
2180 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2181 | CMD_SEND_BRK(arg ? arg*100 : 250)); | |
2182 | serviceOutgoingFifo ( pCh->pMyBord ); | |
2183 | } | |
2184 | break; | |
2185 | ||
2186 | case TIOCGSOFTCAR: | |
2187 | ||
2188 | ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc ); | |
2189 | ||
2190 | rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
2191 | if (rc) | |
2192 | return rc; | |
2193 | break; | |
2194 | ||
2195 | case TIOCSSOFTCAR: | |
2196 | ||
2197 | ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc ); | |
2198 | ||
2199 | rc = get_user(arg,(unsigned long __user *) argp); | |
2200 | if (rc) | |
2201 | return rc; | |
2202 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | |
2203 | | (arg ? CLOCAL : 0)); | |
2204 | ||
2205 | break; | |
2206 | ||
2207 | /* | |
2208 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask | |
2209 | * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS | |
2210 | * for masking). Caller should use TIOCGICOUNT to see which one it was | |
2211 | */ | |
2212 | case TIOCMIWAIT: | |
d9e39538 | 2213 | WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2214 | cprev = pCh->icount; /* note the counters on entry */ |
d9e39538 | 2215 | WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2216 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, |
2217 | CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); | |
2218 | init_waitqueue_entry(&wait, current); | |
2219 | add_wait_queue(&pCh->delta_msr_wait, &wait); | |
2220 | set_current_state( TASK_INTERRUPTIBLE ); | |
2221 | ||
2222 | serviceOutgoingFifo( pCh->pMyBord ); | |
2223 | for(;;) { | |
2224 | ip2trace (CHANN, ITRC_IOCTL, 10, 0 ); | |
2225 | ||
2226 | schedule(); | |
2227 | ||
2228 | ip2trace (CHANN, ITRC_IOCTL, 11, 0 ); | |
2229 | ||
2230 | /* see if a signal did it */ | |
2231 | if (signal_pending(current)) { | |
2232 | rc = -ERESTARTSYS; | |
2233 | break; | |
2234 | } | |
d9e39538 | 2235 | WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2236 | cnow = pCh->icount; /* atomic copy */ |
d9e39538 | 2237 | WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2238 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2239 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { | |
2240 | rc = -EIO; /* no change => rc */ | |
2241 | break; | |
2242 | } | |
2243 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2244 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2245 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2246 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
2247 | rc = 0; | |
2248 | break; | |
2249 | } | |
2250 | cprev = cnow; | |
2251 | } | |
2252 | set_current_state( TASK_RUNNING ); | |
2253 | remove_wait_queue(&pCh->delta_msr_wait, &wait); | |
2254 | ||
2255 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, | |
2256 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
2257 | if ( ! (pCh->flags & ASYNC_CHECK_CD)) { | |
2258 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP); | |
2259 | } | |
2260 | serviceOutgoingFifo( pCh->pMyBord ); | |
2261 | return rc; | |
2262 | break; | |
2263 | ||
2264 | /* | |
2265 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2266 | * Return: write counters to the user passed counter struct | |
2267 | * NB: both 1->0 and 0->1 transitions are counted except for RI where | |
2268 | * only 0->1 is counted. The controller is quite capable of counting | |
2269 | * both, but this done to preserve compatibility with the standard | |
2270 | * serial driver. | |
2271 | */ | |
2272 | case TIOCGICOUNT: | |
2273 | ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc ); | |
2274 | ||
d9e39538 | 2275 | WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2276 | cnow = pCh->icount; |
d9e39538 | 2277 | WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2278 | p_cuser = argp; |
2279 | rc = put_user(cnow.cts, &p_cuser->cts); | |
2280 | rc = put_user(cnow.dsr, &p_cuser->dsr); | |
2281 | rc = put_user(cnow.rng, &p_cuser->rng); | |
2282 | rc = put_user(cnow.dcd, &p_cuser->dcd); | |
2283 | rc = put_user(cnow.rx, &p_cuser->rx); | |
2284 | rc = put_user(cnow.tx, &p_cuser->tx); | |
2285 | rc = put_user(cnow.frame, &p_cuser->frame); | |
2286 | rc = put_user(cnow.overrun, &p_cuser->overrun); | |
2287 | rc = put_user(cnow.parity, &p_cuser->parity); | |
2288 | rc = put_user(cnow.brk, &p_cuser->brk); | |
2289 | rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); | |
2290 | break; | |
2291 | ||
2292 | /* | |
2293 | * The rest are not supported by this driver. By returning -ENOIOCTLCMD they | |
2294 | * will be passed to the line discipline for it to handle. | |
2295 | */ | |
2296 | case TIOCSERCONFIG: | |
2297 | case TIOCSERGWILD: | |
2298 | case TIOCSERGETLSR: | |
2299 | case TIOCSERSWILD: | |
2300 | case TIOCSERGSTRUCT: | |
2301 | case TIOCSERGETMULTI: | |
2302 | case TIOCSERSETMULTI: | |
2303 | ||
2304 | default: | |
2305 | ip2trace (CHANN, ITRC_IOCTL, 12, 0 ); | |
2306 | ||
2307 | rc = -ENOIOCTLCMD; | |
2308 | break; | |
2309 | } | |
2310 | ||
2311 | ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 ); | |
2312 | ||
2313 | return rc; | |
2314 | } | |
2315 | ||
2316 | /******************************************************************************/ | |
2317 | /* Function: GetSerialInfo() */ | |
2318 | /* Parameters: Pointer to channel structure */ | |
2319 | /* Pointer to old termios structure */ | |
2320 | /* Returns: Nothing */ | |
2321 | /* */ | |
2322 | /* Description: */ | |
2323 | /* This is to support the setserial command, and requires processing of the */ | |
2324 | /* standard Linux serial structure. */ | |
2325 | /******************************************************************************/ | |
2326 | static int | |
2327 | get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo ) | |
2328 | { | |
2329 | struct serial_struct tmp; | |
2330 | ||
2331 | memset ( &tmp, 0, sizeof(tmp) ); | |
2332 | tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; | |
2333 | if (BID_HAS_654(tmp.type)) { | |
2334 | tmp.type = PORT_16650; | |
2335 | } else { | |
2336 | tmp.type = PORT_CIRRUS; | |
2337 | } | |
2338 | tmp.line = pCh->port_index; | |
2339 | tmp.port = pCh->pMyBord->i2eBase; | |
2340 | tmp.irq = ip2config.irq[pCh->port_index/64]; | |
2341 | tmp.flags = pCh->flags; | |
2342 | tmp.baud_base = pCh->BaudBase; | |
2343 | tmp.close_delay = pCh->ClosingDelay; | |
2344 | tmp.closing_wait = pCh->ClosingWaitTime; | |
2345 | tmp.custom_divisor = pCh->BaudDivisor; | |
2346 | return copy_to_user(retinfo,&tmp,sizeof(*retinfo)); | |
2347 | } | |
2348 | ||
2349 | /******************************************************************************/ | |
2350 | /* Function: SetSerialInfo() */ | |
2351 | /* Parameters: Pointer to channel structure */ | |
2352 | /* Pointer to old termios structure */ | |
2353 | /* Returns: Nothing */ | |
2354 | /* */ | |
2355 | /* Description: */ | |
2356 | /* This function provides support for setserial, which uses the TIOCSSERIAL */ | |
2357 | /* ioctl. Not all setserial parameters are relevant. If the user attempts to */ | |
2358 | /* change the IRQ, address or type of the port the ioctl fails. */ | |
2359 | /******************************************************************************/ | |
2360 | static int | |
2361 | set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info ) | |
2362 | { | |
2363 | struct serial_struct ns; | |
2364 | int old_flags, old_baud_divisor; | |
2365 | ||
2366 | if (copy_from_user(&ns, new_info, sizeof (ns))) | |
2367 | return -EFAULT; | |
2368 | ||
2369 | /* | |
2370 | * We don't allow setserial to change IRQ, board address, type or baud | |
2371 | * base. Also line nunber as such is meaningless but we use it for our | |
2372 | * array index so it is fixed also. | |
2373 | */ | |
2374 | if ( (ns.irq != ip2config.irq[pCh->port_index]) | |
2375 | || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase))) | |
2376 | || (ns.baud_base != pCh->BaudBase) | |
2377 | || (ns.line != pCh->port_index) ) { | |
2378 | return -EINVAL; | |
2379 | } | |
2380 | ||
2381 | old_flags = pCh->flags; | |
2382 | old_baud_divisor = pCh->BaudDivisor; | |
2383 | ||
2384 | if ( !capable(CAP_SYS_ADMIN) ) { | |
2385 | if ( ( ns.close_delay != pCh->ClosingDelay ) || | |
2386 | ( (ns.flags & ~ASYNC_USR_MASK) != | |
2387 | (pCh->flags & ~ASYNC_USR_MASK) ) ) { | |
2388 | return -EPERM; | |
2389 | } | |
2390 | ||
2391 | pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | | |
2392 | (ns.flags & ASYNC_USR_MASK); | |
2393 | pCh->BaudDivisor = ns.custom_divisor; | |
2394 | } else { | |
2395 | pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | | |
2396 | (ns.flags & ASYNC_FLAGS); | |
2397 | pCh->BaudDivisor = ns.custom_divisor; | |
2398 | pCh->ClosingDelay = ns.close_delay * HZ/100; | |
2399 | pCh->ClosingWaitTime = ns.closing_wait * HZ/100; | |
2400 | } | |
2401 | ||
2402 | if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) | |
2403 | || (old_baud_divisor != pCh->BaudDivisor) ) { | |
2404 | // Invalidate speed and reset parameters | |
2405 | set_params( pCh, NULL ); | |
2406 | } | |
2407 | ||
2408 | return 0; | |
2409 | } | |
2410 | ||
2411 | /******************************************************************************/ | |
2412 | /* Function: ip2_set_termios() */ | |
2413 | /* Parameters: Pointer to tty structure */ | |
2414 | /* Pointer to old termios structure */ | |
2415 | /* Returns: Nothing */ | |
2416 | /* */ | |
2417 | /* Description: */ | |
2418 | /* */ | |
2419 | /* */ | |
2420 | /******************************************************************************/ | |
2421 | static void | |
2422 | ip2_set_termios( PTTY tty, struct termios *old_termios ) | |
2423 | { | |
2424 | i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; | |
2425 | ||
2426 | #ifdef IP2DEBUG_IOCTL | |
2427 | printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); | |
2428 | #endif | |
2429 | ||
2430 | set_params( pCh, old_termios ); | |
2431 | } | |
2432 | ||
2433 | /******************************************************************************/ | |
2434 | /* Function: ip2_set_line_discipline() */ | |
2435 | /* Parameters: Pointer to tty structure */ | |
2436 | /* Returns: Nothing */ | |
2437 | /* */ | |
2438 | /* Description: Does nothing */ | |
2439 | /* */ | |
2440 | /* */ | |
2441 | /******************************************************************************/ | |
2442 | static void | |
2443 | ip2_set_line_discipline ( PTTY tty ) | |
2444 | { | |
2445 | #ifdef IP2DEBUG_IOCTL | |
2446 | printk (KERN_DEBUG "IP2: set line discipline\n" ); | |
2447 | #endif | |
2448 | ||
2449 | ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); | |
2450 | ||
2451 | } | |
2452 | ||
2453 | /******************************************************************************/ | |
2454 | /* Function: SetLine Characteristics() */ | |
2455 | /* Parameters: Pointer to channel structure */ | |
2456 | /* Returns: Nothing */ | |
2457 | /* */ | |
2458 | /* Description: */ | |
2459 | /* This routine is called to update the channel structure with the new line */ | |
2460 | /* characteristics, and send the appropriate commands to the board when they */ | |
2461 | /* change. */ | |
2462 | /******************************************************************************/ | |
2463 | static void | |
2464 | set_params( i2ChanStrPtr pCh, struct termios *o_tios ) | |
2465 | { | |
2466 | tcflag_t cflag, iflag, lflag; | |
2467 | char stop_char, start_char; | |
2468 | struct termios dummy; | |
2469 | ||
2470 | lflag = pCh->pTTY->termios->c_lflag; | |
2471 | cflag = pCh->pTTY->termios->c_cflag; | |
2472 | iflag = pCh->pTTY->termios->c_iflag; | |
2473 | ||
2474 | if (o_tios == NULL) { | |
2475 | dummy.c_lflag = ~lflag; | |
2476 | dummy.c_cflag = ~cflag; | |
2477 | dummy.c_iflag = ~iflag; | |
2478 | o_tios = &dummy; | |
2479 | } | |
2480 | ||
2481 | { | |
2482 | switch ( cflag & CBAUD ) { | |
2483 | case B0: | |
2484 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); | |
2485 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
2486 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
2487 | pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); | |
2488 | goto service_it; | |
2489 | break; | |
2490 | case B38400: | |
2491 | /* | |
2492 | * This is the speed that is overloaded with all the other high | |
2493 | * speeds, depending upon the flag settings. | |
2494 | */ | |
2495 | if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { | |
2496 | pCh->speed = CBR_57600; | |
2497 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { | |
2498 | pCh->speed = CBR_115200; | |
2499 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { | |
2500 | pCh->speed = CBR_C1; | |
2501 | } else { | |
2502 | pCh->speed = CBR_38400; | |
2503 | } | |
2504 | break; | |
2505 | case B50: pCh->speed = CBR_50; break; | |
2506 | case B75: pCh->speed = CBR_75; break; | |
2507 | case B110: pCh->speed = CBR_110; break; | |
2508 | case B134: pCh->speed = CBR_134; break; | |
2509 | case B150: pCh->speed = CBR_150; break; | |
2510 | case B200: pCh->speed = CBR_200; break; | |
2511 | case B300: pCh->speed = CBR_300; break; | |
2512 | case B600: pCh->speed = CBR_600; break; | |
2513 | case B1200: pCh->speed = CBR_1200; break; | |
2514 | case B1800: pCh->speed = CBR_1800; break; | |
2515 | case B2400: pCh->speed = CBR_2400; break; | |
2516 | case B4800: pCh->speed = CBR_4800; break; | |
2517 | case B9600: pCh->speed = CBR_9600; break; | |
2518 | case B19200: pCh->speed = CBR_19200; break; | |
2519 | case B57600: pCh->speed = CBR_57600; break; | |
2520 | case B115200: pCh->speed = CBR_115200; break; | |
2521 | case B153600: pCh->speed = CBR_153600; break; | |
2522 | case B230400: pCh->speed = CBR_230400; break; | |
2523 | case B307200: pCh->speed = CBR_307200; break; | |
2524 | case B460800: pCh->speed = CBR_460800; break; | |
2525 | case B921600: pCh->speed = CBR_921600; break; | |
2526 | default: pCh->speed = CBR_9600; break; | |
2527 | } | |
2528 | if ( pCh->speed == CBR_C1 ) { | |
2529 | // Process the custom speed parameters. | |
2530 | int bps = pCh->BaudBase / pCh->BaudDivisor; | |
2531 | if ( bps == 921600 ) { | |
2532 | pCh->speed = CBR_921600; | |
2533 | } else { | |
2534 | bps = bps/10; | |
2535 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); | |
2536 | } | |
2537 | } | |
2538 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); | |
2539 | ||
2540 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); | |
2541 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
2542 | } | |
2543 | if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) | |
2544 | { | |
2545 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, | |
2546 | CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); | |
2547 | } | |
2548 | if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) | |
2549 | { | |
2550 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, | |
2551 | CMD_SETPAR( | |
2552 | (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) | |
2553 | ) | |
2554 | ); | |
2555 | } | |
2556 | /* byte size and parity */ | |
2557 | if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) | |
2558 | { | |
2559 | int datasize; | |
2560 | switch ( cflag & CSIZE ) { | |
2561 | case CS5: datasize = CSZ_5; break; | |
2562 | case CS6: datasize = CSZ_6; break; | |
2563 | case CS7: datasize = CSZ_7; break; | |
2564 | case CS8: datasize = CSZ_8; break; | |
2565 | default: datasize = CSZ_5; break; /* as per serial.c */ | |
2566 | } | |
2567 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); | |
2568 | } | |
2569 | /* Process CTS flow control flag setting */ | |
2570 | if ( (cflag & CRTSCTS) ) { | |
2571 | i2QueueCommands(PTYPE_INLINE, pCh, 100, | |
2572 | 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); | |
2573 | } else { | |
2574 | i2QueueCommands(PTYPE_INLINE, pCh, 100, | |
2575 | 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
2576 | } | |
2577 | // | |
2578 | // Process XON/XOFF flow control flags settings | |
2579 | // | |
2580 | stop_char = STOP_CHAR(pCh->pTTY); | |
2581 | start_char = START_CHAR(pCh->pTTY); | |
2582 | ||
2583 | //////////// can't be \000 | |
2584 | if (stop_char == __DISABLED_CHAR ) | |
2585 | { | |
2586 | stop_char = ~__DISABLED_CHAR; | |
2587 | } | |
2588 | if (start_char == __DISABLED_CHAR ) | |
2589 | { | |
2590 | start_char = ~__DISABLED_CHAR; | |
2591 | } | |
2592 | ///////////////////////////////// | |
2593 | ||
2594 | if ( o_tios->c_cc[VSTART] != start_char ) | |
2595 | { | |
2596 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); | |
2597 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); | |
2598 | } | |
2599 | if ( o_tios->c_cc[VSTOP] != stop_char ) | |
2600 | { | |
2601 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); | |
2602 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); | |
2603 | } | |
2604 | if (stop_char == __DISABLED_CHAR ) | |
2605 | { | |
2606 | stop_char = ~__DISABLED_CHAR; //TEST123 | |
2607 | goto no_xoff; | |
2608 | } | |
2609 | if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) | |
2610 | { | |
2611 | if ( iflag & IXOFF ) { // Enable XOFF output flow control | |
2612 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); | |
2613 | } else { // Disable XOFF output flow control | |
2614 | no_xoff: | |
2615 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); | |
2616 | } | |
2617 | } | |
2618 | if (start_char == __DISABLED_CHAR ) | |
2619 | { | |
2620 | goto no_xon; | |
2621 | } | |
2622 | if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) | |
2623 | { | |
2624 | if ( iflag & IXON ) { | |
2625 | if ( iflag & IXANY ) { // Enable XON/XANY output flow control | |
2626 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); | |
2627 | } else { // Enable XON output flow control | |
2628 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); | |
2629 | } | |
2630 | } else { // Disable XON output flow control | |
2631 | no_xon: | |
2632 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); | |
2633 | } | |
2634 | } | |
2635 | if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) | |
2636 | { | |
2637 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2638 | CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); | |
2639 | } | |
2640 | if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) | |
2641 | { | |
2642 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2643 | CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); | |
2644 | } | |
2645 | ||
2646 | if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) | |
2647 | ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) | |
2648 | { | |
2649 | char brkrpt = 0; | |
2650 | char parrpt = 0; | |
2651 | ||
2652 | if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ | |
2653 | /* Ignore breaks altogether */ | |
2654 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); | |
2655 | } else { | |
2656 | if ( iflag & BRKINT ) { | |
2657 | if ( iflag & PARMRK ) { | |
2658 | brkrpt = 0x0a; // exception an inline triple | |
2659 | } else { | |
2660 | brkrpt = 0x1a; // exception and NULL | |
2661 | } | |
2662 | brkrpt |= 0x04; // flush input | |
2663 | } else { | |
2664 | if ( iflag & PARMRK ) { | |
2665 | brkrpt = 0x0b; //POSIX triple \0377 \0 \0 | |
2666 | } else { | |
2667 | brkrpt = 0x01; // Null only | |
2668 | } | |
2669 | } | |
2670 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); | |
2671 | } | |
2672 | ||
2673 | if (iflag & IGNPAR) { | |
2674 | parrpt = 0x20; | |
2675 | /* would be 2 for not cirrus bug */ | |
2676 | /* would be 0x20 cept for cirrus bug */ | |
2677 | } else { | |
2678 | if ( iflag & PARMRK ) { | |
2679 | /* | |
2680 | * Replace error characters with 3-byte sequence (\0377,\0,char) | |
2681 | */ | |
2682 | parrpt = 0x04 ; | |
2683 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); | |
2684 | } else { | |
2685 | parrpt = 0x03; | |
2686 | } | |
2687 | } | |
2688 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); | |
2689 | } | |
2690 | if (cflag & CLOCAL) { | |
2691 | // Status reporting fails for DCD if this is off | |
2692 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); | |
2693 | pCh->flags &= ~ASYNC_CHECK_CD; | |
2694 | } else { | |
2695 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); | |
2696 | pCh->flags |= ASYNC_CHECK_CD; | |
2697 | } | |
2698 | ||
1da177e4 LT |
2699 | service_it: |
2700 | i2DrainOutput( pCh, 100 ); | |
2701 | } | |
2702 | ||
2703 | /******************************************************************************/ | |
2704 | /* IPL Device Section */ | |
2705 | /******************************************************************************/ | |
2706 | ||
2707 | /******************************************************************************/ | |
2708 | /* Function: ip2_ipl_read() */ | |
2709 | /* Parameters: Pointer to device inode */ | |
2710 | /* Pointer to file structure */ | |
2711 | /* Pointer to data */ | |
2712 | /* Number of bytes to read */ | |
2713 | /* Returns: Success or failure */ | |
2714 | /* */ | |
2715 | /* Description: Ugly */ | |
2716 | /* */ | |
2717 | /* */ | |
2718 | /******************************************************************************/ | |
2719 | ||
2720 | static | |
2721 | ssize_t | |
2722 | ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off ) | |
2723 | { | |
2724 | unsigned int minor = iminor(pFile->f_dentry->d_inode); | |
2725 | int rc = 0; | |
2726 | ||
2727 | #ifdef IP2DEBUG_IPL | |
2728 | printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); | |
2729 | #endif | |
2730 | ||
2731 | switch( minor ) { | |
2732 | case 0: // IPL device | |
2733 | rc = -EINVAL; | |
2734 | break; | |
2735 | case 1: // Status dump | |
2736 | rc = -EINVAL; | |
2737 | break; | |
2738 | case 2: // Ping device | |
2739 | rc = -EINVAL; | |
2740 | break; | |
2741 | case 3: // Trace device | |
2742 | rc = DumpTraceBuffer ( pData, count ); | |
2743 | break; | |
2744 | case 4: // Trace device | |
2745 | rc = DumpFifoBuffer ( pData, count ); | |
2746 | break; | |
2747 | default: | |
2748 | rc = -ENODEV; | |
2749 | break; | |
2750 | } | |
2751 | return rc; | |
2752 | } | |
2753 | ||
2754 | static int | |
2755 | DumpFifoBuffer ( char __user *pData, int count ) | |
2756 | { | |
2757 | #ifdef DEBUG_FIFO | |
2758 | int rc; | |
2759 | rc = copy_to_user(pData, DBGBuf, count); | |
2760 | ||
2761 | printk(KERN_DEBUG "Last index %d\n", I ); | |
2762 | ||
2763 | return count; | |
2764 | #endif /* DEBUG_FIFO */ | |
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | static int | |
2769 | DumpTraceBuffer ( char __user *pData, int count ) | |
2770 | { | |
2771 | #ifdef IP2DEBUG_TRACE | |
2772 | int rc; | |
2773 | int dumpcount; | |
2774 | int chunk; | |
2775 | int *pIndex = (int __user *)pData; | |
2776 | ||
2777 | if ( count < (sizeof(int) * 6) ) { | |
2778 | return -EIO; | |
2779 | } | |
2780 | rc = put_user(tracewrap, pIndex ); | |
2781 | rc = put_user(TRACEMAX, ++pIndex ); | |
2782 | rc = put_user(tracestrip, ++pIndex ); | |
2783 | rc = put_user(tracestuff, ++pIndex ); | |
2784 | pData += sizeof(int) * 6; | |
2785 | count -= sizeof(int) * 6; | |
2786 | ||
2787 | dumpcount = tracestuff - tracestrip; | |
2788 | if ( dumpcount < 0 ) { | |
2789 | dumpcount += TRACEMAX; | |
2790 | } | |
2791 | if ( dumpcount > count ) { | |
2792 | dumpcount = count; | |
2793 | } | |
2794 | chunk = TRACEMAX - tracestrip; | |
2795 | if ( dumpcount > chunk ) { | |
2796 | rc = copy_to_user(pData, &tracebuf[tracestrip], | |
2797 | chunk * sizeof(tracebuf[0]) ); | |
2798 | pData += chunk * sizeof(tracebuf[0]); | |
2799 | tracestrip = 0; | |
2800 | chunk = dumpcount - chunk; | |
2801 | } else { | |
2802 | chunk = dumpcount; | |
2803 | } | |
2804 | rc = copy_to_user(pData, &tracebuf[tracestrip], | |
2805 | chunk * sizeof(tracebuf[0]) ); | |
2806 | tracestrip += chunk; | |
2807 | tracewrap = 0; | |
2808 | ||
2809 | rc = put_user(tracestrip, ++pIndex ); | |
2810 | rc = put_user(tracestuff, ++pIndex ); | |
2811 | ||
2812 | return dumpcount; | |
2813 | #else | |
2814 | return 0; | |
2815 | #endif | |
2816 | } | |
2817 | ||
2818 | /******************************************************************************/ | |
2819 | /* Function: ip2_ipl_write() */ | |
2820 | /* Parameters: */ | |
2821 | /* Pointer to file structure */ | |
2822 | /* Pointer to data */ | |
2823 | /* Number of bytes to write */ | |
2824 | /* Returns: Success or failure */ | |
2825 | /* */ | |
2826 | /* Description: */ | |
2827 | /* */ | |
2828 | /* */ | |
2829 | /******************************************************************************/ | |
2830 | static ssize_t | |
2831 | ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off) | |
2832 | { | |
2833 | #ifdef IP2DEBUG_IPL | |
2834 | printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); | |
2835 | #endif | |
2836 | return 0; | |
2837 | } | |
2838 | ||
2839 | /******************************************************************************/ | |
2840 | /* Function: ip2_ipl_ioctl() */ | |
2841 | /* Parameters: Pointer to device inode */ | |
2842 | /* Pointer to file structure */ | |
2843 | /* Command */ | |
2844 | /* Argument */ | |
2845 | /* Returns: Success or failure */ | |
2846 | /* */ | |
2847 | /* Description: */ | |
2848 | /* */ | |
2849 | /* */ | |
2850 | /******************************************************************************/ | |
2851 | static int | |
2852 | ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg ) | |
2853 | { | |
2854 | unsigned int iplminor = iminor(pInode); | |
2855 | int rc = 0; | |
2856 | void __user *argp = (void __user *)arg; | |
2857 | ULONG __user *pIndex = argp; | |
2858 | i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; | |
2859 | i2ChanStrPtr pCh; | |
2860 | ||
2861 | #ifdef IP2DEBUG_IPL | |
2862 | printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); | |
2863 | #endif | |
2864 | ||
2865 | switch ( iplminor ) { | |
2866 | case 0: // IPL device | |
2867 | rc = -EINVAL; | |
2868 | break; | |
2869 | case 1: // Status dump | |
2870 | case 5: | |
2871 | case 9: | |
2872 | case 13: | |
2873 | switch ( cmd ) { | |
2874 | case 64: /* Driver - ip2stat */ | |
2875 | rc = put_user(ip2_tty_driver->refcount, pIndex++ ); | |
2876 | rc = put_user(irq_counter, pIndex++ ); | |
2877 | rc = put_user(bh_counter, pIndex++ ); | |
2878 | break; | |
2879 | ||
2880 | case 65: /* Board - ip2stat */ | |
2881 | if ( pB ) { | |
2882 | rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); | |
2883 | rc = put_user(INB(pB->i2eStatus), | |
2884 | (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); | |
2885 | } else { | |
2886 | rc = -ENODEV; | |
2887 | } | |
2888 | break; | |
2889 | ||
2890 | default: | |
2891 | if (cmd < IP2_MAX_PORTS) { | |
2892 | pCh = DevTable[cmd]; | |
2893 | if ( pCh ) | |
2894 | { | |
2895 | rc = copy_to_user(argp, pCh, sizeof(i2ChanStr)); | |
2896 | } else { | |
2897 | rc = -ENODEV; | |
2898 | } | |
2899 | } else { | |
2900 | rc = -EINVAL; | |
2901 | } | |
2902 | } | |
2903 | break; | |
2904 | ||
2905 | case 2: // Ping device | |
2906 | rc = -EINVAL; | |
2907 | break; | |
2908 | case 3: // Trace device | |
def9391c AM |
2909 | /* |
2910 | * akpm: This used to write a whole bunch of function addresses | |
2911 | * to userspace, which generated lots of put_user() warnings. | |
2912 | * I killed it all. Just return "success" and don't do | |
2913 | * anything. | |
2914 | */ | |
2915 | if (cmd == 1) | |
2916 | rc = 0; | |
2917 | else | |
1da177e4 | 2918 | rc = -EINVAL; |
1da177e4 LT |
2919 | break; |
2920 | ||
2921 | default: | |
2922 | rc = -ENODEV; | |
2923 | break; | |
2924 | } | |
2925 | return rc; | |
2926 | } | |
2927 | ||
2928 | /******************************************************************************/ | |
2929 | /* Function: ip2_ipl_open() */ | |
2930 | /* Parameters: Pointer to device inode */ | |
2931 | /* Pointer to file structure */ | |
2932 | /* Returns: Success or failure */ | |
2933 | /* */ | |
2934 | /* Description: */ | |
2935 | /* */ | |
2936 | /* */ | |
2937 | /******************************************************************************/ | |
2938 | static int | |
2939 | ip2_ipl_open( struct inode *pInode, struct file *pFile ) | |
2940 | { | |
2941 | unsigned int iplminor = iminor(pInode); | |
2942 | i2eBordStrPtr pB; | |
2943 | i2ChanStrPtr pCh; | |
2944 | ||
2945 | #ifdef IP2DEBUG_IPL | |
2946 | printk (KERN_DEBUG "IP2IPL: open\n" ); | |
2947 | #endif | |
2948 | ||
2949 | switch(iplminor) { | |
2950 | // These are the IPL devices | |
2951 | case 0: | |
2952 | case 4: | |
2953 | case 8: | |
2954 | case 12: | |
2955 | break; | |
2956 | ||
2957 | // These are the status devices | |
2958 | case 1: | |
2959 | case 5: | |
2960 | case 9: | |
2961 | case 13: | |
2962 | break; | |
2963 | ||
2964 | // These are the debug devices | |
2965 | case 2: | |
2966 | case 6: | |
2967 | case 10: | |
2968 | case 14: | |
2969 | pB = i2BoardPtrTable[iplminor / 4]; | |
2970 | pCh = (i2ChanStrPtr) pB->i2eChannelPtr; | |
2971 | break; | |
2972 | ||
2973 | // This is the trace device | |
2974 | case 3: | |
2975 | break; | |
2976 | } | |
2977 | return 0; | |
2978 | } | |
2979 | /******************************************************************************/ | |
2980 | /* Function: ip2_read_procmem */ | |
2981 | /* Parameters: */ | |
2982 | /* */ | |
2983 | /* Returns: Length of output */ | |
2984 | /* */ | |
2985 | /* Description: */ | |
2986 | /* Supplies some driver operating parameters */ | |
2987 | /* Not real useful unless your debugging the fifo */ | |
2988 | /* */ | |
2989 | /******************************************************************************/ | |
2990 | ||
2991 | #define LIMIT (PAGE_SIZE - 120) | |
2992 | ||
2993 | static int | |
2994 | ip2_read_procmem(char *buf, char **start, off_t offset, int len) | |
2995 | { | |
2996 | i2eBordStrPtr pB; | |
2997 | i2ChanStrPtr pCh; | |
2998 | PTTY tty; | |
2999 | int i; | |
3000 | ||
3001 | len = 0; | |
3002 | ||
3003 | #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" | |
3004 | #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" | |
3005 | #define FMTLIN3 " 0x%04x 0x%04x rc flow\n" | |
3006 | ||
3007 | len += sprintf(buf+len,"\n"); | |
3008 | ||
3009 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
3010 | pB = i2BoardPtrTable[i]; | |
3011 | if ( pB ) { | |
3012 | len += sprintf(buf+len,"board %d:\n",i); | |
3013 | len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n", | |
3014 | pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); | |
3015 | } | |
3016 | } | |
3017 | ||
3018 | len += sprintf(buf+len,"#: tty flags, port flags, cflags, iflags\n"); | |
3019 | for (i=0; i < IP2_MAX_PORTS; i++) { | |
3020 | if (len > LIMIT) | |
3021 | break; | |
3022 | pCh = DevTable[i]; | |
3023 | if (pCh) { | |
3024 | tty = pCh->pTTY; | |
3025 | if (tty && tty->count) { | |
3026 | len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags, | |
3027 | tty->termios->c_cflag,tty->termios->c_iflag); | |
3028 | ||
3029 | len += sprintf(buf+len,FMTLIN2, | |
3030 | pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); | |
3031 | len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room); | |
3032 | } | |
3033 | } | |
3034 | } | |
3035 | return len; | |
3036 | } | |
3037 | ||
3038 | /* | |
3039 | * This is the handler for /proc/tty/driver/ip2 | |
3040 | * | |
3041 | * This stretch of code has been largely plagerized from at least three | |
3042 | * different sources including ip2mkdev.c and a couple of other drivers. | |
3043 | * The bugs are all mine. :-) =mhw= | |
3044 | */ | |
3045 | static int ip2_read_proc(char *page, char **start, off_t off, | |
3046 | int count, int *eof, void *data) | |
3047 | { | |
3048 | int i, j, box; | |
3049 | int len = 0; | |
3050 | int boxes = 0; | |
3051 | int ports = 0; | |
3052 | int tports = 0; | |
3053 | off_t begin = 0; | |
3054 | i2eBordStrPtr pB; | |
3055 | ||
3056 | len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion ); | |
3057 | len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", | |
3058 | IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, | |
3059 | IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); | |
3060 | ||
3061 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
3062 | /* This need to be reset for a board by board count... */ | |
3063 | boxes = 0; | |
3064 | pB = i2BoardPtrTable[i]; | |
3065 | if( pB ) { | |
3066 | switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) | |
3067 | { | |
3068 | case POR_ID_FIIEX: | |
3069 | len += sprintf( page+len, "Board %d: EX ports=", i ); | |
3070 | for( box = 0; box < ABS_MAX_BOXES; ++box ) | |
3071 | { | |
3072 | ports = 0; | |
3073 | ||
3074 | if( pB->i2eChannelMap[box] != 0 ) ++boxes; | |
3075 | for( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
3076 | { | |
3077 | if( pB->i2eChannelMap[box] & 1<< j ) { | |
3078 | ++ports; | |
3079 | } | |
3080 | } | |
3081 | len += sprintf( page+len, "%d,", ports ); | |
3082 | tports += ports; | |
3083 | } | |
3084 | ||
3085 | --len; /* Backup over that last comma */ | |
3086 | ||
3087 | len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 ); | |
3088 | break; | |
3089 | ||
3090 | case POR_ID_II_4: | |
3091 | len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i ); | |
3092 | tports = ports = 4; | |
3093 | break; | |
3094 | ||
3095 | case POR_ID_II_8: | |
3096 | len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i ); | |
3097 | tports = ports = 8; | |
3098 | break; | |
3099 | ||
3100 | case POR_ID_II_8R: | |
3101 | len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i ); | |
3102 | tports = ports = 8; | |
3103 | break; | |
3104 | ||
3105 | default: | |
3106 | len += sprintf(page+len, "Board %d: unknown", i ); | |
3107 | /* Don't try and probe for minor numbers */ | |
3108 | tports = ports = 0; | |
3109 | } | |
3110 | ||
3111 | } else { | |
3112 | /* Don't try and probe for minor numbers */ | |
3113 | len += sprintf(page+len, "Board %d: vacant", i ); | |
3114 | tports = ports = 0; | |
3115 | } | |
3116 | ||
3117 | if( tports ) { | |
3118 | len += sprintf(page+len, " minors=" ); | |
3119 | ||
3120 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) | |
3121 | { | |
3122 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
3123 | { | |
3124 | if ( pB->i2eChannelMap[box] & (1 << j) ) | |
3125 | { | |
3126 | len += sprintf (page+len,"%d,", | |
3127 | j + ABS_BIGGEST_BOX * | |
3128 | (box+i*ABS_MAX_BOXES)); | |
3129 | } | |
3130 | } | |
3131 | } | |
3132 | ||
3133 | page[ len - 1 ] = '\n'; /* Overwrite that last comma */ | |
3134 | } else { | |
3135 | len += sprintf (page+len,"\n" ); | |
3136 | } | |
3137 | ||
3138 | if (len+begin > off+count) | |
3139 | break; | |
3140 | if (len+begin < off) { | |
3141 | begin += len; | |
3142 | len = 0; | |
3143 | } | |
3144 | } | |
3145 | ||
3146 | if (i >= IP2_MAX_BOARDS) | |
3147 | *eof = 1; | |
3148 | if (off >= len+begin) | |
3149 | return 0; | |
3150 | ||
3151 | *start = page + (off-begin); | |
3152 | return ((count < begin+len-off) ? count : begin+len-off); | |
3153 | } | |
3154 | ||
3155 | /******************************************************************************/ | |
3156 | /* Function: ip2trace() */ | |
3157 | /* Parameters: Value to add to trace buffer */ | |
3158 | /* Returns: Nothing */ | |
3159 | /* */ | |
3160 | /* Description: */ | |
3161 | /* */ | |
3162 | /* */ | |
3163 | /******************************************************************************/ | |
3164 | #ifdef IP2DEBUG_TRACE | |
3165 | void | |
3166 | ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) | |
3167 | { | |
3168 | long flags; | |
3169 | unsigned long *pCode = &codes; | |
3170 | union ip2breadcrumb bc; | |
3171 | i2ChanStrPtr pCh; | |
3172 | ||
3173 | ||
3174 | tracebuf[tracestuff++] = jiffies; | |
3175 | if ( tracestuff == TRACEMAX ) { | |
3176 | tracestuff = 0; | |
3177 | } | |
3178 | if ( tracestuff == tracestrip ) { | |
3179 | if ( ++tracestrip == TRACEMAX ) { | |
3180 | tracestrip = 0; | |
3181 | } | |
3182 | ++tracewrap; | |
3183 | } | |
3184 | ||
3185 | bc.hdr.port = 0xff & pn; | |
3186 | bc.hdr.cat = cat; | |
3187 | bc.hdr.codes = (unsigned char)( codes & 0xff ); | |
3188 | bc.hdr.label = label; | |
3189 | tracebuf[tracestuff++] = bc.value; | |
3190 | ||
3191 | for (;;) { | |
3192 | if ( tracestuff == TRACEMAX ) { | |
3193 | tracestuff = 0; | |
3194 | } | |
3195 | if ( tracestuff == tracestrip ) { | |
3196 | if ( ++tracestrip == TRACEMAX ) { | |
3197 | tracestrip = 0; | |
3198 | } | |
3199 | ++tracewrap; | |
3200 | } | |
3201 | ||
3202 | if ( !codes-- ) | |
3203 | break; | |
3204 | ||
3205 | tracebuf[tracestuff++] = *++pCode; | |
3206 | } | |
3207 | } | |
3208 | #endif | |
3209 | ||
3210 | ||
3211 | MODULE_LICENSE("GPL"); |