Commit | Line | Data |
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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 | /************/ | |
1da177e4 LT |
85 | |
86 | #include <linux/ctype.h> | |
87 | #include <linux/string.h> | |
88 | #include <linux/fcntl.h> | |
89 | #include <linux/errno.h> | |
90 | #include <linux/module.h> | |
91 | #include <linux/signal.h> | |
92 | #include <linux/sched.h> | |
1da177e4 LT |
93 | #include <linux/timer.h> |
94 | #include <linux/interrupt.h> | |
95 | #include <linux/pci.h> | |
96 | #include <linux/mm.h> | |
97 | #include <linux/slab.h> | |
98 | #include <linux/major.h> | |
99 | #include <linux/wait.h> | |
100 | #include <linux/device.h> | |
101 | ||
102 | #include <linux/tty.h> | |
103 | #include <linux/tty_flip.h> | |
104 | #include <linux/termios.h> | |
105 | #include <linux/tty_driver.h> | |
106 | #include <linux/serial.h> | |
107 | #include <linux/ptrace.h> | |
108 | #include <linux/ioport.h> | |
109 | ||
110 | #include <linux/cdk.h> | |
111 | #include <linux/comstats.h> | |
112 | #include <linux/delay.h> | |
113 | #include <linux/bitops.h> | |
114 | ||
115 | #include <asm/system.h> | |
116 | #include <asm/io.h> | |
117 | #include <asm/irq.h> | |
118 | ||
119 | #include <linux/vmalloc.h> | |
120 | #include <linux/init.h> | |
1da177e4 LT |
121 | |
122 | #include <asm/uaccess.h> | |
123 | ||
9c4b562a AB |
124 | #include "ip2types.h" |
125 | #include "ip2trace.h" | |
126 | #include "ip2ioctl.h" | |
127 | #include "ip2.h" | |
128 | #include "i2ellis.h" | |
129 | #include "i2lib.h" | |
1da177e4 LT |
130 | |
131 | /***************** | |
132 | * /proc/ip2mem * | |
133 | *****************/ | |
134 | ||
135 | #include <linux/proc_fs.h> | |
136 | ||
137 | static int ip2_read_procmem(char *, char **, off_t, int); | |
138 | static int ip2_read_proc(char *, char **, off_t, int, int *, void * ); | |
139 | ||
140 | /********************/ | |
141 | /* Type Definitions */ | |
142 | /********************/ | |
143 | ||
144 | /*************/ | |
145 | /* Constants */ | |
146 | /*************/ | |
147 | ||
148 | /* String constants to identify ourselves */ | |
149 | static char *pcName = "Computone IntelliPort Plus multiport driver"; | |
150 | static char *pcVersion = "1.2.14"; | |
151 | ||
152 | /* String constants for port names */ | |
153 | static char *pcDriver_name = "ip2"; | |
154 | static char *pcIpl = "ip2ipl"; | |
155 | ||
156 | /* Serial subtype definitions */ | |
157 | #define SERIAL_TYPE_NORMAL 1 | |
158 | ||
159 | // cheezy kludge or genius - you decide? | |
160 | int ip2_loadmain(int *, int *, unsigned char *, int); | |
161 | static unsigned char *Fip_firmware; | |
162 | static int Fip_firmware_size; | |
163 | ||
164 | /***********************/ | |
165 | /* Function Prototypes */ | |
166 | /***********************/ | |
167 | ||
168 | /* Global module entry functions */ | |
169 | ||
170 | /* Private (static) functions */ | |
171 | static int ip2_open(PTTY, struct file *); | |
172 | static void ip2_close(PTTY, struct file *); | |
d9e39538 | 173 | static int ip2_write(PTTY, const unsigned char *, int); |
1da177e4 LT |
174 | static void ip2_putchar(PTTY, unsigned char); |
175 | static void ip2_flush_chars(PTTY); | |
176 | static int ip2_write_room(PTTY); | |
177 | static int ip2_chars_in_buf(PTTY); | |
178 | static void ip2_flush_buffer(PTTY); | |
179 | static int ip2_ioctl(PTTY, struct file *, UINT, ULONG); | |
606d099c | 180 | static void ip2_set_termios(PTTY, struct ktermios *); |
1da177e4 LT |
181 | static void ip2_set_line_discipline(PTTY); |
182 | static void ip2_throttle(PTTY); | |
183 | static void ip2_unthrottle(PTTY); | |
184 | static void ip2_stop(PTTY); | |
185 | static void ip2_start(PTTY); | |
186 | static void ip2_hangup(PTTY); | |
187 | static int ip2_tiocmget(struct tty_struct *tty, struct file *file); | |
188 | static int ip2_tiocmset(struct tty_struct *tty, struct file *file, | |
189 | unsigned int set, unsigned int clear); | |
190 | ||
191 | static void set_irq(int, int); | |
c4028958 | 192 | static void ip2_interrupt_bh(struct work_struct *work); |
7d12e780 | 193 | static irqreturn_t ip2_interrupt(int irq, void *dev_id); |
1da177e4 LT |
194 | static void ip2_poll(unsigned long arg); |
195 | static inline void service_all_boards(void); | |
c4028958 DH |
196 | static void do_input(struct work_struct *); |
197 | static void do_status(struct work_struct *); | |
1da177e4 LT |
198 | |
199 | static void ip2_wait_until_sent(PTTY,int); | |
200 | ||
606d099c | 201 | static void set_params (i2ChanStrPtr, struct ktermios *); |
1da177e4 LT |
202 | static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *); |
203 | static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *); | |
204 | ||
205 | static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *); | |
206 | static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *); | |
207 | static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG); | |
208 | static int ip2_ipl_open(struct inode *, struct file *); | |
209 | ||
210 | static int DumpTraceBuffer(char __user *, int); | |
211 | static int DumpFifoBuffer( char __user *, int); | |
212 | ||
213 | static void ip2_init_board(int); | |
214 | static unsigned short find_eisa_board(int); | |
215 | ||
216 | /***************/ | |
217 | /* Static Data */ | |
218 | /***************/ | |
219 | ||
220 | static struct tty_driver *ip2_tty_driver; | |
221 | ||
222 | /* Here, then is a table of board pointers which the interrupt routine should | |
223 | * scan through to determine who it must service. | |
224 | */ | |
225 | static unsigned short i2nBoards; // Number of boards here | |
226 | ||
227 | static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS]; | |
228 | ||
229 | static i2ChanStrPtr DevTable[IP2_MAX_PORTS]; | |
230 | //DevTableMem just used to save addresses for kfree | |
231 | static void *DevTableMem[IP2_MAX_BOARDS]; | |
232 | ||
233 | /* This is the driver descriptor for the ip2ipl device, which is used to | |
234 | * download the loadware to the boards. | |
235 | */ | |
62322d25 | 236 | static const struct file_operations ip2_ipl = { |
1da177e4 LT |
237 | .owner = THIS_MODULE, |
238 | .read = ip2_ipl_read, | |
239 | .write = ip2_ipl_write, | |
240 | .ioctl = ip2_ipl_ioctl, | |
241 | .open = ip2_ipl_open, | |
242 | }; | |
243 | ||
244 | static unsigned long irq_counter = 0; | |
245 | static unsigned long bh_counter = 0; | |
246 | ||
247 | // Use immediate queue to service interrupts | |
248 | #define USE_IQI | |
249 | //#define USE_IQ // PCI&2.2 needs work | |
250 | ||
251 | /* The timer_list entry for our poll routine. If interrupt operation is not | |
252 | * selected, the board is serviced periodically to see if anything needs doing. | |
253 | */ | |
254 | #define POLL_TIMEOUT (jiffies + 1) | |
8d06afab | 255 | static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0); |
1da177e4 LT |
256 | static char TimerOn; |
257 | ||
258 | #ifdef IP2DEBUG_TRACE | |
259 | /* Trace (debug) buffer data */ | |
260 | #define TRACEMAX 1000 | |
261 | static unsigned long tracebuf[TRACEMAX]; | |
262 | static int tracestuff; | |
263 | static int tracestrip; | |
264 | static int tracewrap; | |
265 | #endif | |
266 | ||
267 | /**********/ | |
268 | /* Macros */ | |
269 | /**********/ | |
270 | ||
271 | #if defined(MODULE) && defined(IP2DEBUG_OPEN) | |
272 | #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \ | |
273 | tty->name,(pCh->flags),ip2_tty_driver->refcount, \ | |
274 | tty->count,/*GET_USE_COUNT(module)*/0,s) | |
275 | #else | |
276 | #define DBG_CNT(s) | |
277 | #endif | |
278 | ||
279 | /********/ | |
280 | /* Code */ | |
281 | /********/ | |
282 | ||
9c4b562a AB |
283 | #include "i2ellis.c" /* Extremely low-level interface services */ |
284 | #include "i2cmd.c" /* Standard loadware command definitions */ | |
285 | #include "i2lib.c" /* High level interface services */ | |
1da177e4 LT |
286 | |
287 | /* Configuration area for modprobe */ | |
288 | ||
289 | MODULE_AUTHOR("Doug McNash"); | |
290 | MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); | |
291 | ||
292 | static int poll_only = 0; | |
293 | ||
294 | static int Eisa_irq; | |
295 | static int Eisa_slot; | |
296 | ||
297 | static int iindx; | |
298 | static char rirqs[IP2_MAX_BOARDS]; | |
299 | static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; | |
300 | ||
301 | /* for sysfs class support */ | |
ca8eca68 | 302 | static struct class *ip2_class; |
1da177e4 LT |
303 | |
304 | // Some functions to keep track of what irq's we have | |
305 | ||
673e321c | 306 | static int |
1da177e4 LT |
307 | is_valid_irq(int irq) |
308 | { | |
309 | int *i = Valid_Irqs; | |
310 | ||
311 | while ((*i != 0) && (*i != irq)) { | |
312 | i++; | |
313 | } | |
314 | return (*i); | |
315 | } | |
316 | ||
673e321c | 317 | static void |
1da177e4 LT |
318 | mark_requested_irq( char irq ) |
319 | { | |
320 | rirqs[iindx++] = irq; | |
321 | } | |
322 | ||
323 | #ifdef MODULE | |
673e321c | 324 | static int |
1da177e4 LT |
325 | clear_requested_irq( char irq ) |
326 | { | |
327 | int i; | |
328 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
329 | if (rirqs[i] == irq) { | |
330 | rirqs[i] = 0; | |
331 | return 1; | |
332 | } | |
333 | } | |
334 | return 0; | |
335 | } | |
336 | #endif | |
337 | ||
673e321c | 338 | static int |
1da177e4 LT |
339 | have_requested_irq( char irq ) |
340 | { | |
341 | // array init to zeros so 0 irq will not be requested as a side effect | |
342 | int i; | |
343 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
344 | if (rirqs[i] == irq) | |
345 | return 1; | |
346 | } | |
347 | return 0; | |
348 | } | |
349 | ||
350 | /******************************************************************************/ | |
351 | /* Function: init_module() */ | |
352 | /* Parameters: None */ | |
353 | /* Returns: Success (0) */ | |
354 | /* */ | |
355 | /* Description: */ | |
356 | /* This is a required entry point for an installable module. It simply calls */ | |
357 | /* the driver initialisation function and returns what it returns. */ | |
358 | /******************************************************************************/ | |
359 | #ifdef MODULE | |
360 | int | |
361 | init_module(void) | |
362 | { | |
363 | #ifdef IP2DEBUG_INIT | |
364 | printk (KERN_DEBUG "Loading module ...\n" ); | |
365 | #endif | |
366 | return 0; | |
367 | } | |
368 | #endif /* MODULE */ | |
369 | ||
370 | /******************************************************************************/ | |
371 | /* Function: cleanup_module() */ | |
372 | /* Parameters: None */ | |
373 | /* Returns: Nothing */ | |
374 | /* */ | |
375 | /* Description: */ | |
376 | /* This is a required entry point for an installable module. It has to return */ | |
377 | /* the device and the driver to a passive state. It should not be necessary */ | |
378 | /* to reset the board fully, especially as the loadware is downloaded */ | |
379 | /* externally rather than in the driver. We just want to disable the board */ | |
380 | /* and clear the loadware to a reset state. To allow this there has to be a */ | |
381 | /* way to detect whether the board has the loadware running at init time to */ | |
382 | /* handle subsequent installations of the driver. All memory allocated by the */ | |
383 | /* driver should be returned since it may be unloaded from memory. */ | |
384 | /******************************************************************************/ | |
385 | #ifdef MODULE | |
386 | void | |
387 | cleanup_module(void) | |
388 | { | |
389 | int err; | |
390 | int i; | |
391 | ||
392 | #ifdef IP2DEBUG_INIT | |
393 | printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion ); | |
394 | #endif | |
395 | /* Stop poll timer if we had one. */ | |
396 | if ( TimerOn ) { | |
397 | del_timer ( &PollTimer ); | |
398 | TimerOn = 0; | |
399 | } | |
400 | ||
401 | /* Reset the boards we have. */ | |
402 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
403 | if ( i2BoardPtrTable[i] ) { | |
404 | iiReset( i2BoardPtrTable[i] ); | |
405 | } | |
406 | } | |
407 | ||
408 | /* The following is done at most once, if any boards were installed. */ | |
409 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
410 | if ( i2BoardPtrTable[i] ) { | |
411 | iiResetDelay( i2BoardPtrTable[i] ); | |
412 | /* free io addresses and Tibet */ | |
413 | release_region( ip2config.addr[i], 8 ); | |
ca8eca68 | 414 | class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); |
ca8eca68 | 415 | class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); |
1da177e4 LT |
416 | } |
417 | /* Disable and remove interrupt handler. */ | |
418 | if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { | |
419 | free_irq ( ip2config.irq[i], (void *)&pcName); | |
420 | clear_requested_irq( ip2config.irq[i]); | |
421 | } | |
422 | } | |
ca8eca68 | 423 | class_destroy(ip2_class); |
1da177e4 LT |
424 | if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) { |
425 | printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); | |
426 | } | |
427 | put_tty_driver(ip2_tty_driver); | |
68fc4fab | 428 | unregister_chrdev(IP2_IPL_MAJOR, pcIpl); |
1da177e4 LT |
429 | remove_proc_entry("ip2mem", &proc_root); |
430 | ||
431 | // free memory | |
432 | for (i = 0; i < IP2_MAX_BOARDS; i++) { | |
433 | void *pB; | |
434 | #ifdef CONFIG_PCI | |
435 | if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) { | |
436 | pci_disable_device(ip2config.pci_dev[i]); | |
1aff0eca | 437 | pci_dev_put(ip2config.pci_dev[i]); |
1da177e4 LT |
438 | ip2config.pci_dev[i] = NULL; |
439 | } | |
440 | #endif | |
441 | if ((pB = i2BoardPtrTable[i]) != 0 ) { | |
442 | kfree ( pB ); | |
443 | i2BoardPtrTable[i] = NULL; | |
444 | } | |
445 | if ((DevTableMem[i]) != NULL ) { | |
446 | kfree ( DevTableMem[i] ); | |
447 | DevTableMem[i] = NULL; | |
448 | } | |
449 | } | |
450 | ||
451 | /* Cleanup the iiEllis subsystem. */ | |
452 | iiEllisCleanup(); | |
453 | #ifdef IP2DEBUG_INIT | |
454 | printk (KERN_DEBUG "IP2 Unloaded\n" ); | |
455 | #endif | |
456 | } | |
457 | #endif /* MODULE */ | |
458 | ||
b68e31d0 | 459 | static const struct tty_operations ip2_ops = { |
1da177e4 LT |
460 | .open = ip2_open, |
461 | .close = ip2_close, | |
462 | .write = ip2_write, | |
463 | .put_char = ip2_putchar, | |
464 | .flush_chars = ip2_flush_chars, | |
465 | .write_room = ip2_write_room, | |
466 | .chars_in_buffer = ip2_chars_in_buf, | |
467 | .flush_buffer = ip2_flush_buffer, | |
468 | .ioctl = ip2_ioctl, | |
469 | .throttle = ip2_throttle, | |
470 | .unthrottle = ip2_unthrottle, | |
471 | .set_termios = ip2_set_termios, | |
472 | .set_ldisc = ip2_set_line_discipline, | |
473 | .stop = ip2_stop, | |
474 | .start = ip2_start, | |
475 | .hangup = ip2_hangup, | |
476 | .read_proc = ip2_read_proc, | |
477 | .tiocmget = ip2_tiocmget, | |
478 | .tiocmset = ip2_tiocmset, | |
479 | }; | |
480 | ||
481 | /******************************************************************************/ | |
482 | /* Function: ip2_loadmain() */ | |
483 | /* Parameters: irq, io from command line of insmod et. al. */ | |
484 | /* pointer to fip firmware and firmware size for boards */ | |
485 | /* Returns: Success (0) */ | |
486 | /* */ | |
487 | /* Description: */ | |
488 | /* This was the required entry point for all drivers (now in ip2.c) */ | |
489 | /* It performs all */ | |
490 | /* initialisation of the devices and driver structures, and registers itself */ | |
491 | /* with the relevant kernel modules. */ | |
492 | /******************************************************************************/ | |
0f2ed4c6 TG |
493 | /* IRQF_DISABLED - if set blocks all interrupts else only this line */ |
494 | /* IRQF_SHARED - for shared irq PCI or maybe EISA only */ | |
1da177e4 LT |
495 | /* SA_RANDOM - can be source for cert. random number generators */ |
496 | #define IP2_SA_FLAGS 0 | |
497 | ||
498 | int | |
499 | ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) | |
500 | { | |
501 | int i, j, box; | |
502 | int err = 0; | |
1da177e4 LT |
503 | static int loaded; |
504 | i2eBordStrPtr pB = NULL; | |
505 | int rc = -1; | |
1aff0eca | 506 | static struct pci_dev *pci_dev_i = NULL; |
1da177e4 LT |
507 | |
508 | ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 ); | |
509 | ||
510 | /* process command line arguments to modprobe or | |
511 | insmod i.e. iop & irqp */ | |
512 | /* irqp and iop should ALWAYS be specified now... But we check | |
513 | them individually just to be sure, anyways... */ | |
514 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
515 | if (iop) { | |
516 | ip2config.addr[i] = iop[i]; | |
517 | if (irqp) { | |
518 | if( irqp[i] >= 0 ) { | |
519 | ip2config.irq[i] = irqp[i]; | |
520 | } else { | |
521 | ip2config.irq[i] = 0; | |
522 | } | |
523 | // This is a little bit of a hack. If poll_only=1 on command | |
524 | // line back in ip2.c OR all IRQs on all specified boards are | |
525 | // explicitly set to 0, then drop to poll only mode and override | |
526 | // PCI or EISA interrupts. This superceeds the old hack of | |
527 | // triggering if all interrupts were zero (like da default). | |
528 | // Still a hack but less prone to random acts of terrorism. | |
529 | // | |
530 | // What we really should do, now that the IRQ default is set | |
531 | // to -1, is to use 0 as a hard coded, do not probe. | |
532 | // | |
533 | // /\/\|=mhw=|\/\/ | |
534 | poll_only |= irqp[i]; | |
535 | } | |
536 | } | |
537 | } | |
538 | poll_only = !poll_only; | |
539 | ||
540 | Fip_firmware = firmware; | |
541 | Fip_firmware_size = firmsize; | |
542 | ||
543 | /* Announce our presence */ | |
544 | printk( KERN_INFO "%s version %s\n", pcName, pcVersion ); | |
545 | ||
546 | // ip2 can be unloaded and reloaded for no good reason | |
547 | // we can't let that happen here or bad things happen | |
548 | // second load hoses board but not system - fixme later | |
549 | if (loaded) { | |
550 | printk( KERN_INFO "Still loaded\n" ); | |
551 | return 0; | |
552 | } | |
553 | loaded++; | |
554 | ||
555 | ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); | |
556 | if (!ip2_tty_driver) | |
557 | return -ENOMEM; | |
558 | ||
559 | /* Initialise the iiEllis subsystem. */ | |
560 | iiEllisInit(); | |
561 | ||
562 | /* Initialize arrays. */ | |
563 | memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable ); | |
564 | memset( DevTable, 0, sizeof DevTable ); | |
565 | ||
566 | /* Initialise all the boards we can find (up to the maximum). */ | |
567 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
568 | switch ( ip2config.addr[i] ) { | |
569 | case 0: /* skip this slot even if card is present */ | |
570 | break; | |
571 | default: /* ISA */ | |
572 | /* ISA address must be specified */ | |
573 | if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) { | |
574 | printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n", | |
575 | i, ip2config.addr[i] ); | |
576 | ip2config.addr[i] = 0; | |
577 | } else { | |
578 | ip2config.type[i] = ISA; | |
579 | ||
580 | /* Check for valid irq argument, set for polling if invalid */ | |
581 | if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) { | |
582 | printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]); | |
583 | ip2config.irq[i] = 0;// 0 is polling and is valid in that sense | |
584 | } | |
585 | } | |
586 | break; | |
587 | case PCI: | |
588 | #ifdef CONFIG_PCI | |
589 | { | |
ad4a5bb8 AM |
590 | int status; |
591 | ||
1aff0eca | 592 | pci_dev_i = pci_get_device(PCI_VENDOR_ID_COMPUTONE, |
1da177e4 LT |
593 | PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i); |
594 | if (pci_dev_i != NULL) { | |
595 | unsigned int addr; | |
596 | ||
597 | if (pci_enable_device(pci_dev_i)) { | |
598 | printk( KERN_ERR "IP2: can't enable PCI device at %s\n", | |
599 | pci_name(pci_dev_i)); | |
600 | break; | |
601 | } | |
602 | ip2config.type[i] = PCI; | |
1aff0eca | 603 | ip2config.pci_dev[i] = pci_dev_get(pci_dev_i); |
1da177e4 LT |
604 | status = |
605 | pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr); | |
606 | if ( addr & 1 ) { | |
607 | ip2config.addr[i]=(USHORT)(addr&0xfffe); | |
608 | } else { | |
609 | printk( KERN_ERR "IP2: PCI I/O address error\n"); | |
610 | } | |
611 | ||
612 | // If the PCI BIOS assigned it, lets try and use it. If we | |
613 | // can't acquire it or it screws up, deal with it then. | |
614 | ||
615 | // if (!is_valid_irq(pci_irq)) { | |
616 | // printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq); | |
617 | // pci_irq = 0; | |
618 | // } | |
619 | ip2config.irq[i] = pci_dev_i->irq; | |
620 | } else { // ann error | |
621 | ip2config.addr[i] = 0; | |
622 | if (status == PCIBIOS_DEVICE_NOT_FOUND) { | |
623 | printk( KERN_ERR "IP2: PCI board %d not found\n", i ); | |
624 | } else { | |
625 | printk( KERN_ERR "IP2: PCI error 0x%x \n", status ); | |
626 | } | |
627 | } | |
628 | } | |
629 | #else | |
630 | printk( KERN_ERR "IP2: PCI card specified but PCI support not\n"); | |
631 | printk( KERN_ERR "IP2: configured in this kernel.\n"); | |
632 | printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n"); | |
633 | #endif /* CONFIG_PCI */ | |
634 | break; | |
635 | case EISA: | |
636 | if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) { | |
637 | /* Eisa_irq set as side effect, boo */ | |
638 | ip2config.type[i] = EISA; | |
639 | } | |
640 | ip2config.irq[i] = Eisa_irq; | |
641 | break; | |
642 | } /* switch */ | |
643 | } /* for */ | |
1aff0eca AC |
644 | if (pci_dev_i) |
645 | pci_dev_put(pci_dev_i); | |
646 | ||
1da177e4 LT |
647 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { |
648 | if ( ip2config.addr[i] ) { | |
649 | pB = kmalloc( sizeof(i2eBordStr), GFP_KERNEL); | |
650 | if ( pB != NULL ) { | |
651 | i2BoardPtrTable[i] = pB; | |
652 | memset( pB, 0, sizeof(i2eBordStr) ); | |
653 | iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer ); | |
654 | iiReset( pB ); | |
655 | } else { | |
656 | printk(KERN_ERR "IP2: board memory allocation error\n"); | |
657 | } | |
658 | } | |
659 | } | |
660 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
661 | if ( ( pB = i2BoardPtrTable[i] ) != NULL ) { | |
662 | iiResetDelay( pB ); | |
663 | break; | |
664 | } | |
665 | } | |
666 | for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
667 | if ( i2BoardPtrTable[i] != NULL ) { | |
668 | ip2_init_board( i ); | |
669 | } | |
670 | } | |
671 | ||
672 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 ); | |
673 | ||
674 | ip2_tty_driver->owner = THIS_MODULE; | |
675 | ip2_tty_driver->name = "ttyF"; | |
1da177e4 LT |
676 | ip2_tty_driver->driver_name = pcDriver_name; |
677 | ip2_tty_driver->major = IP2_TTY_MAJOR; | |
678 | ip2_tty_driver->minor_start = 0; | |
679 | ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
680 | ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; | |
681 | ip2_tty_driver->init_termios = tty_std_termios; | |
682 | ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; | |
331b8319 | 683 | ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
684 | tty_set_operations(ip2_tty_driver, &ip2_ops); |
685 | ||
686 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); | |
687 | ||
688 | /* Register the tty devices. */ | |
689 | if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) { | |
690 | printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err); | |
691 | put_tty_driver(ip2_tty_driver); | |
692 | return -EINVAL; | |
693 | } else | |
694 | /* Register the IPL driver. */ | |
695 | if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) { | |
696 | printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err ); | |
697 | } else { | |
698 | /* create the sysfs class */ | |
ca8eca68 | 699 | ip2_class = class_create(THIS_MODULE, "ip2"); |
1da177e4 LT |
700 | if (IS_ERR(ip2_class)) { |
701 | err = PTR_ERR(ip2_class); | |
702 | goto out_chrdev; | |
703 | } | |
704 | } | |
705 | /* Register the read_procmem thing */ | |
706 | if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) { | |
707 | printk(KERN_ERR "IP2: failed to register read_procmem\n"); | |
708 | } else { | |
709 | ||
710 | ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 ); | |
711 | /* Register the interrupt handler or poll handler, depending upon the | |
712 | * specified interrupt. | |
713 | */ | |
714 | ||
715 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
716 | if ( 0 == ip2config.addr[i] ) { | |
717 | continue; | |
718 | } | |
719 | ||
720 | if ( NULL != ( pB = i2BoardPtrTable[i] ) ) { | |
53f46542 GKH |
721 | class_device_create(ip2_class, NULL, |
722 | MKDEV(IP2_IPL_MAJOR, 4 * i), | |
723 | NULL, "ipl%d", i); | |
53f46542 GKH |
724 | class_device_create(ip2_class, NULL, |
725 | MKDEV(IP2_IPL_MAJOR, 4 * i + 1), | |
726 | NULL, "stat%d", i); | |
1da177e4 LT |
727 | |
728 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) | |
729 | { | |
730 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
731 | { | |
732 | if ( pB->i2eChannelMap[box] & (1 << j) ) | |
733 | { | |
734 | tty_register_device(ip2_tty_driver, | |
735 | j + ABS_BIGGEST_BOX * | |
736 | (box+i*ABS_MAX_BOXES), NULL); | |
737 | } | |
738 | } | |
739 | } | |
740 | } | |
741 | ||
742 | if (poll_only) { | |
743 | // Poll only forces driver to only use polling and | |
744 | // to ignore the probed PCI or EISA interrupts. | |
745 | ip2config.irq[i] = CIR_POLL; | |
746 | } | |
747 | if ( ip2config.irq[i] == CIR_POLL ) { | |
748 | retry: | |
749 | if (!TimerOn) { | |
750 | PollTimer.expires = POLL_TIMEOUT; | |
751 | add_timer ( &PollTimer ); | |
752 | TimerOn = 1; | |
753 | printk( KERN_INFO "IP2: polling\n"); | |
754 | } | |
755 | } else { | |
756 | if (have_requested_irq(ip2config.irq[i])) | |
757 | continue; | |
758 | rc = request_irq( ip2config.irq[i], ip2_interrupt, | |
0f2ed4c6 | 759 | IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0), |
1da177e4 LT |
760 | pcName, (void *)&pcName); |
761 | if (rc) { | |
762 | printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc); | |
763 | ip2config.irq[i] = CIR_POLL; | |
764 | printk( KERN_INFO "IP2: Polling %ld/sec.\n", | |
765 | (POLL_TIMEOUT - jiffies)); | |
766 | goto retry; | |
767 | } | |
768 | mark_requested_irq(ip2config.irq[i]); | |
769 | /* Initialise the interrupt handler bottom half (aka slih). */ | |
770 | } | |
771 | } | |
772 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
773 | if ( i2BoardPtrTable[i] ) { | |
774 | set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */ | |
775 | } | |
776 | } | |
777 | } | |
778 | ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 ); | |
779 | goto out; | |
780 | ||
1da177e4 LT |
781 | out_chrdev: |
782 | unregister_chrdev(IP2_IPL_MAJOR, "ip2"); | |
783 | out: | |
784 | return err; | |
785 | } | |
786 | ||
787 | EXPORT_SYMBOL(ip2_loadmain); | |
788 | ||
789 | /******************************************************************************/ | |
790 | /* Function: ip2_init_board() */ | |
791 | /* Parameters: Index of board in configuration structure */ | |
792 | /* Returns: Success (0) */ | |
793 | /* */ | |
794 | /* Description: */ | |
795 | /* This function initializes the specified board. The loadware is copied to */ | |
796 | /* the board, the channel structures are initialized, and the board details */ | |
797 | /* are reported on the console. */ | |
798 | /******************************************************************************/ | |
673e321c | 799 | static void |
1da177e4 LT |
800 | ip2_init_board( int boardnum ) |
801 | { | |
802 | int i; | |
803 | int nports = 0, nboxes = 0; | |
804 | i2ChanStrPtr pCh; | |
805 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; | |
806 | ||
807 | if ( !iiInitialize ( pB ) ) { | |
808 | printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", | |
809 | pB->i2eBase, pB->i2eError ); | |
810 | goto err_initialize; | |
811 | } | |
812 | printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1, | |
813 | ip2config.addr[boardnum], ip2config.irq[boardnum] ); | |
814 | ||
815 | if (!request_region( ip2config.addr[boardnum], 8, pcName )) { | |
816 | printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]); | |
817 | goto err_initialize; | |
818 | } | |
819 | ||
820 | if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size ) | |
821 | != II_DOWN_GOOD ) { | |
822 | printk ( KERN_ERR "IP2: failed to download loadware\n" ); | |
823 | goto err_release_region; | |
824 | } else { | |
825 | printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n", | |
826 | pB->i2ePom.e.porVersion, | |
827 | pB->i2ePom.e.porRevision, | |
828 | pB->i2ePom.e.porSubRev, pB->i2eLVersion, | |
829 | pB->i2eLRevision, pB->i2eLSub ); | |
830 | } | |
831 | ||
832 | switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { | |
833 | ||
834 | default: | |
835 | printk( KERN_ERR "IP2: Unknown board type, ID = %x\n", | |
836 | pB->i2ePom.e.porID ); | |
837 | nports = 0; | |
838 | goto err_release_region; | |
839 | break; | |
840 | ||
841 | case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ | |
842 | printk ( KERN_INFO "IP2: ISA-4\n" ); | |
843 | nports = 4; | |
844 | break; | |
845 | ||
846 | case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ | |
847 | printk ( KERN_INFO "IP2: ISA-8 std\n" ); | |
848 | nports = 8; | |
849 | break; | |
850 | ||
851 | case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ | |
852 | printk ( KERN_INFO "IP2: ISA-8 RJ11\n" ); | |
853 | nports = 8; | |
854 | break; | |
855 | ||
856 | case POR_ID_FIIEX: /* IntelliPort IIEX */ | |
857 | { | |
858 | int portnum = IP2_PORTS_PER_BOARD * boardnum; | |
859 | int box; | |
860 | ||
861 | for( box = 0; box < ABS_MAX_BOXES; ++box ) { | |
862 | if ( pB->i2eChannelMap[box] != 0 ) { | |
863 | ++nboxes; | |
864 | } | |
865 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { | |
866 | if ( pB->i2eChannelMap[box] & 1<< i ) { | |
867 | ++nports; | |
868 | } | |
869 | } | |
870 | } | |
871 | DevTableMem[boardnum] = pCh = | |
872 | kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); | |
873 | if ( !pCh ) { | |
874 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); | |
875 | goto err_release_region; | |
876 | } | |
877 | if ( !i2InitChannels( pB, nports, pCh ) ) { | |
878 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); | |
879 | kfree ( pCh ); | |
880 | goto err_release_region; | |
881 | } | |
882 | pB->i2eChannelPtr = &DevTable[portnum]; | |
883 | pB->i2eChannelCnt = ABS_MOST_PORTS; | |
884 | ||
885 | for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { | |
886 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { | |
887 | if ( pB->i2eChannelMap[box] & (1 << i) ) { | |
888 | DevTable[portnum + i] = pCh; | |
889 | pCh->port_index = portnum + i; | |
890 | pCh++; | |
891 | } | |
892 | } | |
893 | } | |
894 | printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n", | |
895 | nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); | |
896 | } | |
897 | goto ex_exit; | |
898 | } | |
899 | DevTableMem[boardnum] = pCh = | |
900 | kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); | |
901 | if ( !pCh ) { | |
902 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); | |
903 | goto err_release_region; | |
904 | } | |
905 | pB->i2eChannelPtr = pCh; | |
906 | pB->i2eChannelCnt = nports; | |
907 | if ( !i2InitChannels( pB, nports, pCh ) ) { | |
908 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); | |
909 | kfree ( pCh ); | |
910 | goto err_release_region; | |
911 | } | |
912 | pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; | |
913 | ||
914 | for( i = 0; i < pB->i2eChannelCnt; ++i ) { | |
915 | DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; | |
916 | pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; | |
917 | pCh++; | |
918 | } | |
919 | ex_exit: | |
c4028958 | 920 | INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh); |
1da177e4 LT |
921 | return; |
922 | ||
923 | err_release_region: | |
924 | release_region(ip2config.addr[boardnum], 8); | |
925 | err_initialize: | |
926 | kfree ( pB ); | |
927 | i2BoardPtrTable[boardnum] = NULL; | |
928 | return; | |
929 | } | |
930 | ||
931 | /******************************************************************************/ | |
932 | /* Function: find_eisa_board ( int start_slot ) */ | |
933 | /* Parameters: First slot to check */ | |
934 | /* Returns: Address of EISA IntelliPort II controller */ | |
935 | /* */ | |
936 | /* Description: */ | |
937 | /* This function searches for an EISA IntelliPort controller, starting */ | |
938 | /* from the specified slot number. If the motherboard is not identified as an */ | |
939 | /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ | |
940 | /* it returns the base address of the controller. */ | |
941 | /******************************************************************************/ | |
673e321c | 942 | static unsigned short |
1da177e4 LT |
943 | find_eisa_board( int start_slot ) |
944 | { | |
945 | int i, j; | |
946 | unsigned int idm = 0; | |
947 | unsigned int idp = 0; | |
948 | unsigned int base = 0; | |
949 | unsigned int value; | |
950 | int setup_address; | |
951 | int setup_irq; | |
952 | int ismine = 0; | |
953 | ||
954 | /* | |
955 | * First a check for an EISA motherboard, which we do by comparing the | |
956 | * EISA ID registers for the system board and the first couple of slots. | |
957 | * No slot ID should match the system board ID, but on an ISA or PCI | |
958 | * machine the odds are that an empty bus will return similar values for | |
959 | * each slot. | |
960 | */ | |
961 | i = 0x0c80; | |
962 | value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); | |
963 | for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { | |
964 | j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); | |
965 | if ( value == j ) | |
966 | return 0; | |
967 | } | |
968 | ||
969 | /* | |
970 | * OK, so we are inclined to believe that this is an EISA machine. Find | |
971 | * an IntelliPort controller. | |
972 | */ | |
973 | for( i = start_slot; i < 16; i++ ) { | |
974 | base = i << 12; | |
975 | idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); | |
976 | idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); | |
977 | ismine = 0; | |
978 | if ( idm == 0x0e8e ) { | |
979 | if ( idp == 0x0281 || idp == 0x0218 ) { | |
980 | ismine = 1; | |
981 | } else if ( idp == 0x0282 || idp == 0x0283 ) { | |
982 | ismine = 3; /* Can do edge-trigger */ | |
983 | } | |
984 | if ( ismine ) { | |
985 | Eisa_slot = i; | |
986 | break; | |
987 | } | |
988 | } | |
989 | } | |
990 | if ( !ismine ) | |
991 | return 0; | |
992 | ||
993 | /* It's some sort of EISA card, but at what address is it configured? */ | |
994 | ||
995 | setup_address = base + 0xc88; | |
996 | value = inb(base + 0xc86); | |
997 | setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; | |
998 | ||
999 | if ( (ismine & 2) && !(value & 0x10) ) { | |
1000 | ismine = 1; /* Could be edging, but not */ | |
1001 | } | |
1002 | ||
1003 | if ( Eisa_irq == 0 ) { | |
1004 | Eisa_irq = setup_irq; | |
1005 | } else if ( Eisa_irq != setup_irq ) { | |
1006 | printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); | |
1007 | } | |
1008 | ||
1009 | #ifdef IP2DEBUG_INIT | |
1010 | printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", | |
1011 | base >> 12, idm, idp, setup_address); | |
1012 | if ( Eisa_irq ) { | |
1013 | printk(KERN_DEBUG ", Interrupt %d %s\n", | |
1014 | setup_irq, (ismine & 2) ? "(edge)" : "(level)"); | |
1015 | } else { | |
1016 | printk(KERN_DEBUG ", (polled)\n"); | |
1017 | } | |
1018 | #endif | |
1019 | return setup_address; | |
1020 | } | |
1021 | ||
1022 | /******************************************************************************/ | |
1023 | /* Function: set_irq() */ | |
1024 | /* Parameters: index to board in board table */ | |
1025 | /* IRQ to use */ | |
1026 | /* Returns: Success (0) */ | |
1027 | /* */ | |
1028 | /* Description: */ | |
1029 | /******************************************************************************/ | |
1030 | static void | |
1031 | set_irq( int boardnum, int boardIrq ) | |
1032 | { | |
1033 | unsigned char tempCommand[16]; | |
1034 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; | |
1035 | unsigned long flags; | |
1036 | ||
1037 | /* | |
1038 | * Notify the boards they may generate interrupts. This is done by | |
1039 | * sending an in-line command to channel 0 on each board. This is why | |
1040 | * the channels have to be defined already. For each board, if the | |
1041 | * interrupt has never been defined, we must do so NOW, directly, since | |
1042 | * board will not send flow control or even give an interrupt until this | |
1043 | * is done. If polling we must send 0 as the interrupt parameter. | |
1044 | */ | |
1045 | ||
1046 | // We will get an interrupt here at the end of this function | |
1047 | ||
1048 | iiDisableMailIrq(pB); | |
1049 | ||
1050 | /* We build up the entire packet header. */ | |
1051 | CHANNEL_OF(tempCommand) = 0; | |
1052 | PTYPE_OF(tempCommand) = PTYPE_INLINE; | |
1053 | CMD_COUNT_OF(tempCommand) = 2; | |
1054 | (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; | |
1055 | (CMD_OF(tempCommand))[1] = boardIrq; | |
1056 | /* | |
1057 | * Write to FIFO; don't bother to adjust fifo capacity for this, since | |
1058 | * board will respond almost immediately after SendMail hit. | |
1059 | */ | |
1060 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); | |
1061 | iiWriteBuf(pB, tempCommand, 4); | |
1062 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); | |
1063 | pB->i2eUsingIrq = boardIrq; | |
1064 | pB->i2eOutMailWaiting |= MB_OUT_STUFFED; | |
1065 | ||
1066 | /* Need to update number of boards before you enable mailbox int */ | |
1067 | ++i2nBoards; | |
1068 | ||
1069 | CHANNEL_OF(tempCommand) = 0; | |
1070 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1071 | CMD_COUNT_OF(tempCommand) = 6; | |
1072 | (CMD_OF(tempCommand))[0] = 88; // SILO | |
1073 | (CMD_OF(tempCommand))[1] = 64; // chars | |
1074 | (CMD_OF(tempCommand))[2] = 32; // ms | |
1075 | ||
1076 | (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK | |
1077 | (CMD_OF(tempCommand))[4] = 64; // chars | |
1078 | ||
1079 | (CMD_OF(tempCommand))[5] = 87; // HW_TEST | |
1080 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); | |
1081 | iiWriteBuf(pB, tempCommand, 8); | |
1082 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); | |
1083 | ||
1084 | CHANNEL_OF(tempCommand) = 0; | |
1085 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1086 | CMD_COUNT_OF(tempCommand) = 1; | |
1087 | (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ | |
1088 | iiWriteBuf(pB, tempCommand, 3); | |
1089 | ||
1090 | #ifdef XXX | |
1091 | // enable heartbeat for test porpoises | |
1092 | CHANNEL_OF(tempCommand) = 0; | |
1093 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1094 | CMD_COUNT_OF(tempCommand) = 2; | |
1095 | (CMD_OF(tempCommand))[0] = 44; /* get ping */ | |
1096 | (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ | |
1097 | WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); | |
1098 | iiWriteBuf(pB, tempCommand, 4); | |
1099 | WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); | |
1100 | #endif | |
1101 | ||
1102 | iiEnableMailIrq(pB); | |
1103 | iiSendPendingMail(pB); | |
1104 | } | |
1105 | ||
1106 | /******************************************************************************/ | |
1107 | /* Interrupt Handler Section */ | |
1108 | /******************************************************************************/ | |
1109 | ||
1110 | static inline void | |
1111 | service_all_boards(void) | |
1112 | { | |
1113 | int i; | |
1114 | i2eBordStrPtr pB; | |
1115 | ||
1116 | /* Service every board on the list */ | |
1117 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
1118 | pB = i2BoardPtrTable[i]; | |
1119 | if ( pB ) { | |
1120 | i2ServiceBoard( pB ); | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | ||
1126 | /******************************************************************************/ | |
c4028958 DH |
1127 | /* Function: ip2_interrupt_bh(work) */ |
1128 | /* Parameters: work - pointer to the board structure */ | |
1da177e4 LT |
1129 | /* Returns: Nothing */ |
1130 | /* */ | |
1131 | /* Description: */ | |
1132 | /* Service the board in a bottom half interrupt handler and then */ | |
1133 | /* reenable the board's interrupts if it has an IRQ number */ | |
1134 | /* */ | |
1135 | /******************************************************************************/ | |
1136 | static void | |
c4028958 | 1137 | ip2_interrupt_bh(struct work_struct *work) |
1da177e4 | 1138 | { |
c4028958 | 1139 | i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt); |
1da177e4 LT |
1140 | // pB better well be set or we have a problem! We can only get |
1141 | // here from the IMMEDIATE queue. Here, we process the boards. | |
1142 | // Checking pB doesn't cost much and it saves us from the sanity checkers. | |
1143 | ||
1144 | bh_counter++; | |
1145 | ||
1146 | if ( pB ) { | |
1147 | i2ServiceBoard( pB ); | |
1148 | if( pB->i2eUsingIrq ) { | |
1149 | // Re-enable his interrupts | |
1150 | iiEnableMailIrq(pB); | |
1151 | } | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | ||
1156 | /******************************************************************************/ | |
7d12e780 | 1157 | /* Function: ip2_interrupt(int irq, void *dev_id) */ |
1da177e4 LT |
1158 | /* Parameters: irq - interrupt number */ |
1159 | /* pointer to optional device ID structure */ | |
1da177e4 LT |
1160 | /* Returns: Nothing */ |
1161 | /* */ | |
1162 | /* Description: */ | |
1163 | /* */ | |
1164 | /* Our task here is simply to identify each board which needs servicing. */ | |
1165 | /* If we are queuing then, queue it to be serviced, and disable its irq */ | |
1166 | /* mask otherwise process the board directly. */ | |
1167 | /* */ | |
1168 | /* We could queue by IRQ but that just complicates things on both ends */ | |
1169 | /* with very little gain in performance (how many instructions does */ | |
1170 | /* it take to iterate on the immediate queue). */ | |
1171 | /* */ | |
1172 | /* */ | |
1173 | /******************************************************************************/ | |
1174 | static irqreturn_t | |
7d12e780 | 1175 | ip2_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1176 | { |
1177 | int i; | |
1178 | i2eBordStrPtr pB; | |
1179 | int handled = 0; | |
1180 | ||
1181 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq ); | |
1182 | ||
1183 | /* Service just the boards on the list using this irq */ | |
1184 | for( i = 0; i < i2nBoards; ++i ) { | |
1185 | pB = i2BoardPtrTable[i]; | |
1186 | ||
1187 | // Only process those boards which match our IRQ. | |
1188 | // IRQ = 0 for polled boards, we won't poll "IRQ" boards | |
1189 | ||
1190 | if ( pB && (pB->i2eUsingIrq == irq) ) { | |
1191 | handled = 1; | |
1192 | #ifdef USE_IQI | |
1193 | ||
1194 | if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) { | |
1195 | // Disable his interrupt (will be enabled when serviced) | |
1196 | // This is mostly to protect from reentrancy. | |
1197 | iiDisableMailIrq(pB); | |
1198 | ||
1199 | // Park the board on the immediate queue for processing. | |
1200 | schedule_work(&pB->tqueue_interrupt); | |
1201 | ||
1202 | // Make sure the immediate queue is flagged to fire. | |
1203 | } | |
1204 | #else | |
1205 | // We are using immediate servicing here. This sucks and can | |
1206 | // cause all sorts of havoc with ppp and others. The failsafe | |
1207 | // check on iiSendPendingMail could also throw a hairball. | |
1208 | i2ServiceBoard( pB ); | |
1209 | #endif /* USE_IQI */ | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | ++irq_counter; | |
1214 | ||
1215 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
1216 | return IRQ_RETVAL(handled); | |
1217 | } | |
1218 | ||
1219 | /******************************************************************************/ | |
1220 | /* Function: ip2_poll(unsigned long arg) */ | |
1221 | /* Parameters: ? */ | |
1222 | /* Returns: Nothing */ | |
1223 | /* */ | |
1224 | /* Description: */ | |
1225 | /* This function calls the library routine i2ServiceBoard for each board in */ | |
1226 | /* the board table. This is used instead of the interrupt routine when polled */ | |
1227 | /* mode is specified. */ | |
1228 | /******************************************************************************/ | |
1229 | static void | |
1230 | ip2_poll(unsigned long arg) | |
1231 | { | |
1232 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); | |
1233 | ||
1234 | TimerOn = 0; // it's the truth but not checked in service | |
1235 | ||
1236 | // Just polled boards, IRQ = 0 will hit all non-interrupt boards. | |
1237 | // It will NOT poll boards handled by hard interrupts. | |
1238 | // The issue of queued BH interrups is handled in ip2_interrupt(). | |
7d12e780 | 1239 | ip2_interrupt(0, NULL); |
1da177e4 LT |
1240 | |
1241 | PollTimer.expires = POLL_TIMEOUT; | |
1242 | add_timer( &PollTimer ); | |
1243 | TimerOn = 1; | |
1244 | ||
1245 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
1246 | } | |
1247 | ||
c4028958 | 1248 | static void do_input(struct work_struct *work) |
1da177e4 | 1249 | { |
c4028958 | 1250 | i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input); |
1da177e4 LT |
1251 | unsigned long flags; |
1252 | ||
1253 | ip2trace(CHANN, ITRC_INPUT, 21, 0 ); | |
1254 | ||
1255 | // Data input | |
1256 | if ( pCh->pTTY != NULL ) { | |
1257 | READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) | |
1258 | if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { | |
1259 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1260 | i2Input( pCh ); | |
1261 | } else | |
1262 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1263 | } else { | |
1264 | ip2trace(CHANN, ITRC_INPUT, 22, 0 ); | |
1265 | ||
1266 | i2InputFlush( pCh ); | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | // code duplicated from n_tty (ldisc) | |
1271 | static inline void isig(int sig, struct tty_struct *tty, int flush) | |
1272 | { | |
ab521dc0 EB |
1273 | if (tty->pgrp) |
1274 | kill_pgrp(tty->pgrp, sig, 1); | |
1da177e4 LT |
1275 | if (flush || !L_NOFLSH(tty)) { |
1276 | if ( tty->ldisc.flush_buffer ) | |
1277 | tty->ldisc.flush_buffer(tty); | |
1278 | i2InputFlush( tty->driver_data ); | |
1279 | } | |
1280 | } | |
1281 | ||
c4028958 | 1282 | static void do_status(struct work_struct *work) |
1da177e4 | 1283 | { |
c4028958 | 1284 | i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status); |
1da177e4 LT |
1285 | int status; |
1286 | ||
1287 | status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); | |
1288 | ||
1289 | ip2trace (CHANN, ITRC_STATUS, 21, 1, status ); | |
1290 | ||
1291 | if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { | |
1292 | if ( (status & I2_BRK) ) { | |
1293 | // code duplicated from n_tty (ldisc) | |
1294 | if (I_IGNBRK(pCh->pTTY)) | |
1295 | goto skip_this; | |
1296 | if (I_BRKINT(pCh->pTTY)) { | |
1297 | isig(SIGINT, pCh->pTTY, 1); | |
1298 | goto skip_this; | |
1299 | } | |
1300 | wake_up_interruptible(&pCh->pTTY->read_wait); | |
1301 | } | |
1302 | #ifdef NEVER_HAPPENS_AS_SETUP_XXX | |
1303 | // and can't work because we don't know the_char | |
1304 | // as the_char is reported on a separate path | |
1305 | // The intelligent board does this stuff as setup | |
1306 | { | |
1307 | char brkf = TTY_NORMAL; | |
1308 | unsigned char brkc = '\0'; | |
1309 | unsigned char tmp; | |
1310 | if ( (status & I2_BRK) ) { | |
1311 | brkf = TTY_BREAK; | |
1312 | brkc = '\0'; | |
1313 | } | |
1314 | else if (status & I2_PAR) { | |
1315 | brkf = TTY_PARITY; | |
1316 | brkc = the_char; | |
1317 | } else if (status & I2_FRA) { | |
1318 | brkf = TTY_FRAME; | |
1319 | brkc = the_char; | |
1320 | } else if (status & I2_OVR) { | |
1321 | brkf = TTY_OVERRUN; | |
1322 | brkc = the_char; | |
1323 | } | |
1324 | tmp = pCh->pTTY->real_raw; | |
1325 | pCh->pTTY->real_raw = 0; | |
1326 | pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); | |
1327 | pCh->pTTY->real_raw = tmp; | |
1328 | } | |
1329 | #endif /* NEVER_HAPPENS_AS_SETUP_XXX */ | |
1330 | } | |
1331 | skip_this: | |
1332 | ||
1333 | if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { | |
1334 | wake_up_interruptible(&pCh->delta_msr_wait); | |
1335 | ||
1336 | if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { | |
1337 | if ( status & I2_DCD ) { | |
1338 | if ( pCh->wopen ) { | |
1339 | wake_up_interruptible ( &pCh->open_wait ); | |
1340 | } | |
1341 | } else { | |
1342 | if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { | |
1343 | tty_hangup( pCh->pTTY ); | |
1344 | } | |
1345 | } | |
1346 | } | |
1347 | } | |
1348 | ||
1349 | ip2trace (CHANN, ITRC_STATUS, 26, 0 ); | |
1350 | } | |
1351 | ||
1352 | /******************************************************************************/ | |
1353 | /* Device Open/Close/Ioctl Entry Point Section */ | |
1354 | /******************************************************************************/ | |
1355 | ||
1356 | /******************************************************************************/ | |
1357 | /* Function: open_sanity_check() */ | |
1358 | /* Parameters: Pointer to tty structure */ | |
1359 | /* Pointer to file structure */ | |
1360 | /* Returns: Success or failure */ | |
1361 | /* */ | |
1362 | /* Description: */ | |
1363 | /* Verifies the structure magic numbers and cross links. */ | |
1364 | /******************************************************************************/ | |
1365 | #ifdef IP2DEBUG_OPEN | |
1366 | static void | |
1367 | open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) | |
1368 | { | |
1369 | if ( pBrd->i2eValid != I2E_MAGIC ) { | |
1370 | printk(KERN_ERR "IP2: invalid board structure\n" ); | |
1371 | } else if ( pBrd != pCh->pMyBord ) { | |
1372 | printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", | |
1373 | pCh->pMyBord ); | |
1374 | } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { | |
1375 | printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); | |
1376 | } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { | |
1377 | } else { | |
1378 | printk(KERN_INFO "IP2: all pointers check out!\n" ); | |
1379 | } | |
1380 | } | |
1381 | #endif | |
1382 | ||
1383 | ||
1384 | /******************************************************************************/ | |
1385 | /* Function: ip2_open() */ | |
1386 | /* Parameters: Pointer to tty structure */ | |
1387 | /* Pointer to file structure */ | |
1388 | /* Returns: Success or failure */ | |
1389 | /* */ | |
1390 | /* Description: (MANDATORY) */ | |
1391 | /* A successful device open has to run a gauntlet of checks before it */ | |
1392 | /* completes. After some sanity checking and pointer setup, the function */ | |
1393 | /* blocks until all conditions are satisfied. It then initialises the port to */ | |
1394 | /* the default characteristics and returns. */ | |
1395 | /******************************************************************************/ | |
1396 | static int | |
1397 | ip2_open( PTTY tty, struct file *pFile ) | |
1398 | { | |
1399 | wait_queue_t wait; | |
1400 | int rc = 0; | |
1401 | int do_clocal = 0; | |
1402 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1403 | ||
1404 | ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 ); | |
1405 | ||
1406 | if ( pCh == NULL ) { | |
1407 | return -ENODEV; | |
1408 | } | |
1409 | /* Setup pointer links in device and tty structures */ | |
1410 | pCh->pTTY = tty; | |
1411 | tty->driver_data = pCh; | |
1412 | ||
1413 | #ifdef IP2DEBUG_OPEN | |
1414 | printk(KERN_DEBUG \ | |
1415 | "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n", | |
1416 | tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index); | |
1417 | open_sanity_check ( pCh, pCh->pMyBord ); | |
1418 | #endif | |
1419 | ||
1420 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP); | |
1421 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
1422 | serviceOutgoingFifo( pCh->pMyBord ); | |
1423 | ||
1424 | /* Block here until the port is ready (per serial and istallion) */ | |
1425 | /* | |
1426 | * 1. If the port is in the middle of closing wait for the completion | |
1427 | * and then return the appropriate error. | |
1428 | */ | |
1429 | init_waitqueue_entry(&wait, current); | |
1430 | add_wait_queue(&pCh->close_wait, &wait); | |
1431 | set_current_state( TASK_INTERRUPTIBLE ); | |
1432 | ||
1433 | if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { | |
1434 | if ( pCh->flags & ASYNC_CLOSING ) { | |
1435 | schedule(); | |
1436 | } | |
1437 | if ( tty_hung_up_p(pFile) ) { | |
1438 | set_current_state( TASK_RUNNING ); | |
1439 | remove_wait_queue(&pCh->close_wait, &wait); | |
1440 | return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; | |
1441 | } | |
1442 | } | |
1443 | set_current_state( TASK_RUNNING ); | |
1444 | remove_wait_queue(&pCh->close_wait, &wait); | |
1445 | ||
1446 | /* | |
1447 | * 3. Handle a non-blocking open of a normal port. | |
1448 | */ | |
1449 | if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) { | |
1450 | pCh->flags |= ASYNC_NORMAL_ACTIVE; | |
1451 | goto noblock; | |
1452 | } | |
1453 | /* | |
1454 | * 4. Now loop waiting for the port to be free and carrier present | |
1455 | * (if required). | |
1456 | */ | |
1457 | if ( tty->termios->c_cflag & CLOCAL ) | |
1458 | do_clocal = 1; | |
1459 | ||
1460 | #ifdef IP2DEBUG_OPEN | |
1461 | printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); | |
1462 | #endif | |
1463 | ||
1464 | ++pCh->wopen; | |
1465 | ||
1466 | init_waitqueue_entry(&wait, current); | |
1467 | add_wait_queue(&pCh->open_wait, &wait); | |
1468 | ||
1469 | for(;;) { | |
1470 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); | |
1471 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
1472 | set_current_state( TASK_INTERRUPTIBLE ); | |
1473 | serviceOutgoingFifo( pCh->pMyBord ); | |
1474 | if ( tty_hung_up_p(pFile) ) { | |
1475 | set_current_state( TASK_RUNNING ); | |
1476 | remove_wait_queue(&pCh->open_wait, &wait); | |
1477 | return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; | |
1478 | } | |
1479 | if (!(pCh->flags & ASYNC_CLOSING) && | |
1480 | (do_clocal || (pCh->dataSetIn & I2_DCD) )) { | |
1481 | rc = 0; | |
1482 | break; | |
1483 | } | |
1484 | ||
1485 | #ifdef IP2DEBUG_OPEN | |
1486 | printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", | |
1487 | (pCh->flags & ASYNC_CLOSING)?"True":"False"); | |
1488 | printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); | |
1489 | #endif | |
1490 | ip2trace (CHANN, ITRC_OPEN, 3, 2, 0, | |
1491 | (pCh->flags & ASYNC_CLOSING) ); | |
1492 | /* check for signal */ | |
1493 | if (signal_pending(current)) { | |
1494 | rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); | |
1495 | break; | |
1496 | } | |
1497 | schedule(); | |
1498 | } | |
1499 | set_current_state( TASK_RUNNING ); | |
1500 | remove_wait_queue(&pCh->open_wait, &wait); | |
1501 | ||
1502 | --pCh->wopen; //why count? | |
1503 | ||
1504 | ip2trace (CHANN, ITRC_OPEN, 4, 0 ); | |
1505 | ||
1506 | if (rc != 0 ) { | |
1507 | return rc; | |
1508 | } | |
1509 | pCh->flags |= ASYNC_NORMAL_ACTIVE; | |
1510 | ||
1511 | noblock: | |
1512 | ||
1513 | /* first open - Assign termios structure to port */ | |
1514 | if ( tty->count == 1 ) { | |
1515 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
1516 | /* Now we must send the termios settings to the loadware */ | |
1517 | set_params( pCh, NULL ); | |
1518 | } | |
1519 | ||
1520 | /* | |
1521 | * Now set any i2lib options. These may go away if the i2lib code ends | |
1522 | * up rolled into the mainline. | |
1523 | */ | |
1524 | pCh->channelOptions |= CO_NBLOCK_WRITE; | |
1525 | ||
1526 | #ifdef IP2DEBUG_OPEN | |
1527 | printk (KERN_DEBUG "IP2: open completed\n" ); | |
1528 | #endif | |
1529 | serviceOutgoingFifo( pCh->pMyBord ); | |
1530 | ||
1531 | ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 ); | |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
1536 | /******************************************************************************/ | |
1537 | /* Function: ip2_close() */ | |
1538 | /* Parameters: Pointer to tty structure */ | |
1539 | /* Pointer to file structure */ | |
1540 | /* Returns: Nothing */ | |
1541 | /* */ | |
1542 | /* Description: */ | |
1543 | /* */ | |
1544 | /* */ | |
1545 | /******************************************************************************/ | |
1546 | static void | |
1547 | ip2_close( PTTY tty, struct file *pFile ) | |
1548 | { | |
1549 | i2ChanStrPtr pCh = tty->driver_data; | |
1550 | ||
1551 | if ( !pCh ) { | |
1552 | return; | |
1553 | } | |
1554 | ||
1555 | ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 ); | |
1556 | ||
1557 | #ifdef IP2DEBUG_OPEN | |
1558 | printk(KERN_DEBUG "IP2:close %s:\n",tty->name); | |
1559 | #endif | |
1560 | ||
1561 | if ( tty_hung_up_p ( pFile ) ) { | |
1562 | ||
1563 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 ); | |
1564 | ||
1565 | return; | |
1566 | } | |
1567 | if ( tty->count > 1 ) { /* not the last close */ | |
1568 | ||
1569 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 ); | |
1570 | ||
1571 | return; | |
1572 | } | |
1573 | pCh->flags |= ASYNC_CLOSING; // last close actually | |
1574 | ||
1575 | tty->closing = 1; | |
1576 | ||
1577 | if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { | |
1578 | /* | |
1579 | * Before we drop DTR, make sure the transmitter has completely drained. | |
1580 | * This uses an timeout, after which the close | |
1581 | * completes. | |
1582 | */ | |
1583 | ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); | |
1584 | } | |
1585 | /* | |
1586 | * At this point we stop accepting input. Here we flush the channel | |
1587 | * input buffer which will allow the board to send up more data. Any | |
1588 | * additional input is tossed at interrupt/poll time. | |
1589 | */ | |
1590 | i2InputFlush( pCh ); | |
1591 | ||
1592 | /* disable DSS reporting */ | |
1593 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 4, | |
1594 | CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
1595 | if ( !tty || (tty->termios->c_cflag & HUPCL) ) { | |
1596 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); | |
1597 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
1598 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
1599 | } | |
1600 | ||
1601 | serviceOutgoingFifo ( pCh->pMyBord ); | |
1602 | ||
1603 | if ( tty->driver->flush_buffer ) | |
1604 | tty->driver->flush_buffer(tty); | |
1605 | if ( tty->ldisc.flush_buffer ) | |
1606 | tty->ldisc.flush_buffer(tty); | |
1607 | tty->closing = 0; | |
1608 | ||
1609 | pCh->pTTY = NULL; | |
1610 | ||
1611 | if (pCh->wopen) { | |
1612 | if (pCh->ClosingDelay) { | |
1613 | msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay)); | |
1614 | } | |
1615 | wake_up_interruptible(&pCh->open_wait); | |
1616 | } | |
1617 | ||
1618 | pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1619 | wake_up_interruptible(&pCh->close_wait); | |
1620 | ||
1621 | #ifdef IP2DEBUG_OPEN | |
1622 | DBG_CNT("ip2_close: after wakeups--"); | |
1623 | #endif | |
1624 | ||
1625 | ||
1626 | ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); | |
1627 | ||
1628 | return; | |
1629 | } | |
1630 | ||
1631 | /******************************************************************************/ | |
1632 | /* Function: ip2_hangup() */ | |
1633 | /* Parameters: Pointer to tty structure */ | |
1634 | /* Returns: Nothing */ | |
1635 | /* */ | |
1636 | /* Description: */ | |
1637 | /* */ | |
1638 | /* */ | |
1639 | /******************************************************************************/ | |
1640 | static void | |
1641 | ip2_hangup ( PTTY tty ) | |
1642 | { | |
1643 | i2ChanStrPtr pCh = tty->driver_data; | |
1644 | ||
1645 | if( !pCh ) { | |
1646 | return; | |
1647 | } | |
1648 | ||
1649 | ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 ); | |
1650 | ||
1651 | ip2_flush_buffer(tty); | |
1652 | ||
1653 | /* disable DSS reporting */ | |
1654 | ||
1655 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); | |
1656 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
1657 | if ( (tty->termios->c_cflag & HUPCL) ) { | |
1658 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); | |
1659 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
1660 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
1661 | } | |
1662 | i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, | |
1663 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
1664 | serviceOutgoingFifo ( pCh->pMyBord ); | |
1665 | ||
1666 | wake_up_interruptible ( &pCh->delta_msr_wait ); | |
1667 | ||
1668 | pCh->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1669 | pCh->pTTY = NULL; | |
1670 | wake_up_interruptible ( &pCh->open_wait ); | |
1671 | ||
1672 | ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 ); | |
1673 | } | |
1674 | ||
1675 | /******************************************************************************/ | |
1676 | /******************************************************************************/ | |
1677 | /* Device Output Section */ | |
1678 | /******************************************************************************/ | |
1679 | /******************************************************************************/ | |
1680 | ||
1681 | /******************************************************************************/ | |
1682 | /* Function: ip2_write() */ | |
1683 | /* Parameters: Pointer to tty structure */ | |
1684 | /* Flag denoting data is in user (1) or kernel (0) space */ | |
1685 | /* Pointer to data */ | |
1686 | /* Number of bytes to write */ | |
1687 | /* Returns: Number of bytes actually written */ | |
1688 | /* */ | |
1689 | /* Description: (MANDATORY) */ | |
1690 | /* */ | |
1691 | /* */ | |
1692 | /******************************************************************************/ | |
1693 | static int | |
d9e39538 | 1694 | ip2_write( PTTY tty, const unsigned char *pData, int count) |
1da177e4 LT |
1695 | { |
1696 | i2ChanStrPtr pCh = tty->driver_data; | |
1697 | int bytesSent = 0; | |
1698 | unsigned long flags; | |
1699 | ||
1700 | ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); | |
1701 | ||
1702 | /* Flush out any buffered data left over from ip2_putchar() calls. */ | |
1703 | ip2_flush_chars( tty ); | |
1704 | ||
1705 | /* This is the actual move bit. Make sure it does what we need!!!!! */ | |
1706 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
f061c584 | 1707 | bytesSent = i2Output( pCh, pData, count); |
1da177e4 LT |
1708 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); |
1709 | ||
1710 | ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); | |
1711 | ||
1712 | return bytesSent > 0 ? bytesSent : 0; | |
1713 | } | |
1714 | ||
1715 | /******************************************************************************/ | |
1716 | /* Function: ip2_putchar() */ | |
1717 | /* Parameters: Pointer to tty structure */ | |
1718 | /* Character to write */ | |
1719 | /* Returns: Nothing */ | |
1720 | /* */ | |
1721 | /* Description: */ | |
1722 | /* */ | |
1723 | /* */ | |
1724 | /******************************************************************************/ | |
1725 | static void | |
1726 | ip2_putchar( PTTY tty, unsigned char ch ) | |
1727 | { | |
1728 | i2ChanStrPtr pCh = tty->driver_data; | |
1729 | unsigned long flags; | |
1730 | ||
1731 | // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); | |
1732 | ||
1733 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1734 | pCh->Pbuf[pCh->Pbuf_stuff++] = ch; | |
1735 | if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { | |
1736 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1737 | ip2_flush_chars( tty ); | |
1738 | } else | |
1739 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1740 | ||
1741 | // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); | |
1742 | } | |
1743 | ||
1744 | /******************************************************************************/ | |
1745 | /* Function: ip2_flush_chars() */ | |
1746 | /* Parameters: Pointer to tty structure */ | |
1747 | /* Returns: Nothing */ | |
1748 | /* */ | |
1749 | /* Description: */ | |
1750 | /* */ | |
1751 | /******************************************************************************/ | |
1752 | static void | |
1753 | ip2_flush_chars( PTTY tty ) | |
1754 | { | |
1755 | int strip; | |
1756 | i2ChanStrPtr pCh = tty->driver_data; | |
1757 | unsigned long flags; | |
1758 | ||
1759 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1760 | if ( pCh->Pbuf_stuff ) { | |
1761 | ||
1762 | // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); | |
1763 | ||
1764 | // | |
1765 | // We may need to restart i2Output if it does not fullfill this request | |
1766 | // | |
f061c584 | 1767 | strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff); |
1da177e4 LT |
1768 | if ( strip != pCh->Pbuf_stuff ) { |
1769 | memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); | |
1770 | } | |
1771 | pCh->Pbuf_stuff -= strip; | |
1772 | } | |
1773 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1774 | } | |
1775 | ||
1776 | /******************************************************************************/ | |
1777 | /* Function: ip2_write_room() */ | |
1778 | /* Parameters: Pointer to tty structure */ | |
1779 | /* Returns: Number of bytes that the driver can accept */ | |
1780 | /* */ | |
1781 | /* Description: */ | |
1782 | /* */ | |
1783 | /******************************************************************************/ | |
1784 | static int | |
1785 | ip2_write_room ( PTTY tty ) | |
1786 | { | |
1787 | int bytesFree; | |
1788 | i2ChanStrPtr pCh = tty->driver_data; | |
1789 | unsigned long flags; | |
1790 | ||
1791 | READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1792 | bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; | |
1793 | READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1794 | ||
1795 | ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); | |
1796 | ||
1797 | return ((bytesFree > 0) ? bytesFree : 0); | |
1798 | } | |
1799 | ||
1800 | /******************************************************************************/ | |
1801 | /* Function: ip2_chars_in_buf() */ | |
1802 | /* Parameters: Pointer to tty structure */ | |
1803 | /* Returns: Number of bytes queued for transmission */ | |
1804 | /* */ | |
1805 | /* Description: */ | |
1806 | /* */ | |
1807 | /* */ | |
1808 | /******************************************************************************/ | |
1809 | static int | |
1810 | ip2_chars_in_buf ( PTTY tty ) | |
1811 | { | |
1812 | i2ChanStrPtr pCh = tty->driver_data; | |
1813 | int rc; | |
1814 | unsigned long flags; | |
1815 | ||
1816 | ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); | |
1817 | ||
1818 | #ifdef IP2DEBUG_WRITE | |
1819 | printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", | |
1820 | pCh->Obuf_char_count + pCh->Pbuf_stuff, | |
1821 | pCh->Obuf_char_count, pCh->Pbuf_stuff ); | |
1822 | #endif | |
1823 | READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); | |
1824 | rc = pCh->Obuf_char_count; | |
1825 | READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); | |
1826 | READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1827 | rc += pCh->Pbuf_stuff; | |
1828 | READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1829 | return rc; | |
1830 | } | |
1831 | ||
1832 | /******************************************************************************/ | |
1833 | /* Function: ip2_flush_buffer() */ | |
1834 | /* Parameters: Pointer to tty structure */ | |
1835 | /* Returns: Nothing */ | |
1836 | /* */ | |
1837 | /* Description: */ | |
1838 | /* */ | |
1839 | /* */ | |
1840 | /******************************************************************************/ | |
1841 | static void | |
1842 | ip2_flush_buffer( PTTY tty ) | |
1843 | { | |
1844 | i2ChanStrPtr pCh = tty->driver_data; | |
1845 | unsigned long flags; | |
1846 | ||
1847 | ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 ); | |
1848 | ||
1849 | #ifdef IP2DEBUG_WRITE | |
1850 | printk (KERN_DEBUG "IP2: flush buffer\n" ); | |
1851 | #endif | |
1852 | WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); | |
1853 | pCh->Pbuf_stuff = 0; | |
1854 | WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); | |
1855 | i2FlushOutput( pCh ); | |
1856 | ip2_owake(tty); | |
1857 | ||
1858 | ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 ); | |
1859 | ||
1860 | } | |
1861 | ||
1862 | /******************************************************************************/ | |
1863 | /* Function: ip2_wait_until_sent() */ | |
1864 | /* Parameters: Pointer to tty structure */ | |
1865 | /* Timeout for wait. */ | |
1866 | /* Returns: Nothing */ | |
1867 | /* */ | |
1868 | /* Description: */ | |
1869 | /* This function is used in place of the normal tty_wait_until_sent, which */ | |
1870 | /* only waits for the driver buffers to be empty (or rather, those buffers */ | |
1871 | /* reported by chars_in_buffer) which doesn't work for IP2 due to the */ | |
1872 | /* indeterminate number of bytes buffered on the board. */ | |
1873 | /******************************************************************************/ | |
1874 | static void | |
1875 | ip2_wait_until_sent ( PTTY tty, int timeout ) | |
1876 | { | |
1877 | int i = jiffies; | |
1878 | i2ChanStrPtr pCh = tty->driver_data; | |
1879 | ||
1880 | tty_wait_until_sent(tty, timeout ); | |
1881 | if ( (i = timeout - (jiffies -i)) > 0) | |
1882 | i2DrainOutput( pCh, i ); | |
1883 | } | |
1884 | ||
1885 | /******************************************************************************/ | |
1886 | /******************************************************************************/ | |
1887 | /* Device Input Section */ | |
1888 | /******************************************************************************/ | |
1889 | /******************************************************************************/ | |
1890 | ||
1891 | /******************************************************************************/ | |
1892 | /* Function: ip2_throttle() */ | |
1893 | /* Parameters: Pointer to tty structure */ | |
1894 | /* Returns: Nothing */ | |
1895 | /* */ | |
1896 | /* Description: */ | |
1897 | /* */ | |
1898 | /* */ | |
1899 | /******************************************************************************/ | |
1900 | static void | |
1901 | ip2_throttle ( PTTY tty ) | |
1902 | { | |
1903 | i2ChanStrPtr pCh = tty->driver_data; | |
1904 | ||
1905 | #ifdef IP2DEBUG_READ | |
1906 | printk (KERN_DEBUG "IP2: throttle\n" ); | |
1907 | #endif | |
1908 | /* | |
1909 | * Signal the poll/interrupt handlers not to forward incoming data to | |
1910 | * the line discipline. This will cause the buffers to fill up in the | |
1911 | * library and thus cause the library routines to send the flow control | |
1912 | * stuff. | |
1913 | */ | |
1914 | pCh->throttled = 1; | |
1915 | } | |
1916 | ||
1917 | /******************************************************************************/ | |
1918 | /* Function: ip2_unthrottle() */ | |
1919 | /* Parameters: Pointer to tty structure */ | |
1920 | /* Returns: Nothing */ | |
1921 | /* */ | |
1922 | /* Description: */ | |
1923 | /* */ | |
1924 | /* */ | |
1925 | /******************************************************************************/ | |
1926 | static void | |
1927 | ip2_unthrottle ( PTTY tty ) | |
1928 | { | |
1929 | i2ChanStrPtr pCh = tty->driver_data; | |
1930 | unsigned long flags; | |
1931 | ||
1932 | #ifdef IP2DEBUG_READ | |
1933 | printk (KERN_DEBUG "IP2: unthrottle\n" ); | |
1934 | #endif | |
1935 | ||
1936 | /* Pass incoming data up to the line discipline again. */ | |
1937 | pCh->throttled = 0; | |
1938 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); | |
1939 | serviceOutgoingFifo( pCh->pMyBord ); | |
1940 | READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) | |
1941 | if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { | |
1942 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1943 | #ifdef IP2DEBUG_READ | |
1944 | printk (KERN_DEBUG "i2Input called from unthrottle\n" ); | |
1945 | #endif | |
1946 | i2Input( pCh ); | |
1947 | } else | |
1948 | READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) | |
1949 | } | |
1950 | ||
1951 | static void | |
1952 | ip2_start ( PTTY tty ) | |
1953 | { | |
1954 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1955 | ||
1956 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); | |
1957 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); | |
1958 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); | |
1959 | #ifdef IP2DEBUG_WRITE | |
1960 | printk (KERN_DEBUG "IP2: start tx\n" ); | |
1961 | #endif | |
1962 | } | |
1963 | ||
1964 | static void | |
1965 | ip2_stop ( PTTY tty ) | |
1966 | { | |
1967 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1968 | ||
1969 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); | |
1970 | #ifdef IP2DEBUG_WRITE | |
1971 | printk (KERN_DEBUG "IP2: stop tx\n" ); | |
1972 | #endif | |
1973 | } | |
1974 | ||
1975 | /******************************************************************************/ | |
1976 | /* Device Ioctl Section */ | |
1977 | /******************************************************************************/ | |
1978 | ||
1979 | static int ip2_tiocmget(struct tty_struct *tty, struct file *file) | |
1980 | { | |
1981 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
d9e39538 | 1982 | #ifdef ENABLE_DSSNOW |
1da177e4 | 1983 | wait_queue_t wait; |
d9e39538 | 1984 | #endif |
1da177e4 LT |
1985 | |
1986 | if (pCh == NULL) | |
1987 | return -ENODEV; | |
1988 | ||
1989 | /* | |
1990 | FIXME - the following code is causing a NULL pointer dereference in | |
1991 | 2.3.51 in an interrupt handler. It's suppose to prompt the board | |
1992 | to return the DSS signal status immediately. Why doesn't it do | |
1993 | the same thing in 2.2.14? | |
1994 | */ | |
1995 | ||
1996 | /* This thing is still busted in the 1.2.12 driver on 2.4.x | |
1997 | and even hoses the serial console so the oops can be trapped. | |
1998 | /\/\|=mhw=|\/\/ */ | |
1999 | ||
2000 | #ifdef ENABLE_DSSNOW | |
2001 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW); | |
2002 | ||
2003 | init_waitqueue_entry(&wait, current); | |
2004 | add_wait_queue(&pCh->dss_now_wait, &wait); | |
2005 | set_current_state( TASK_INTERRUPTIBLE ); | |
2006 | ||
2007 | serviceOutgoingFifo( pCh->pMyBord ); | |
2008 | ||
2009 | schedule(); | |
2010 | ||
2011 | set_current_state( TASK_RUNNING ); | |
2012 | remove_wait_queue(&pCh->dss_now_wait, &wait); | |
2013 | ||
2014 | if (signal_pending(current)) { | |
2015 | return -EINTR; | |
2016 | } | |
2017 | #endif | |
2018 | return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) | |
2019 | | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) | |
2020 | | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0) | |
2021 | | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0) | |
2022 | | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0) | |
2023 | | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); | |
2024 | } | |
2025 | ||
2026 | static int ip2_tiocmset(struct tty_struct *tty, struct file *file, | |
2027 | unsigned int set, unsigned int clear) | |
2028 | { | |
2029 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
2030 | ||
2031 | if (pCh == NULL) | |
2032 | return -ENODEV; | |
2033 | ||
2034 | if (set & TIOCM_RTS) { | |
2035 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); | |
2036 | pCh->dataSetOut |= I2_RTS; | |
2037 | } | |
2038 | if (set & TIOCM_DTR) { | |
2039 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); | |
2040 | pCh->dataSetOut |= I2_DTR; | |
2041 | } | |
2042 | ||
2043 | if (clear & TIOCM_RTS) { | |
2044 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); | |
2045 | pCh->dataSetOut &= ~I2_RTS; | |
2046 | } | |
2047 | if (clear & TIOCM_DTR) { | |
2048 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); | |
2049 | pCh->dataSetOut &= ~I2_DTR; | |
2050 | } | |
2051 | serviceOutgoingFifo( pCh->pMyBord ); | |
2052 | return 0; | |
2053 | } | |
2054 | ||
2055 | /******************************************************************************/ | |
2056 | /* Function: ip2_ioctl() */ | |
2057 | /* Parameters: Pointer to tty structure */ | |
2058 | /* Pointer to file structure */ | |
2059 | /* Command */ | |
2060 | /* Argument */ | |
2061 | /* Returns: Success or failure */ | |
2062 | /* */ | |
2063 | /* Description: */ | |
2064 | /* */ | |
2065 | /* */ | |
2066 | /******************************************************************************/ | |
2067 | static int | |
2068 | ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) | |
2069 | { | |
2070 | wait_queue_t wait; | |
2071 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
d9e39538 | 2072 | i2eBordStrPtr pB; |
1da177e4 LT |
2073 | struct async_icount cprev, cnow; /* kernel counter temps */ |
2074 | struct serial_icounter_struct __user *p_cuser; | |
2075 | int rc = 0; | |
2076 | unsigned long flags; | |
2077 | void __user *argp = (void __user *)arg; | |
2078 | ||
d9e39538 | 2079 | if ( pCh == NULL ) |
1da177e4 | 2080 | return -ENODEV; |
d9e39538 AC |
2081 | |
2082 | pB = pCh->pMyBord; | |
1da177e4 LT |
2083 | |
2084 | ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); | |
2085 | ||
2086 | #ifdef IP2DEBUG_IOCTL | |
2087 | printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); | |
2088 | #endif | |
2089 | ||
2090 | switch(cmd) { | |
2091 | case TIOCGSERIAL: | |
2092 | ||
2093 | ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc ); | |
2094 | ||
2095 | rc = get_serial_info(pCh, argp); | |
2096 | if (rc) | |
2097 | return rc; | |
2098 | break; | |
2099 | ||
2100 | case TIOCSSERIAL: | |
2101 | ||
2102 | ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc ); | |
2103 | ||
2104 | rc = set_serial_info(pCh, argp); | |
2105 | if (rc) | |
2106 | return rc; | |
2107 | break; | |
2108 | ||
2109 | case TCXONC: | |
2110 | rc = tty_check_change(tty); | |
2111 | if (rc) | |
2112 | return rc; | |
2113 | switch (arg) { | |
2114 | case TCOOFF: | |
2115 | //return -ENOIOCTLCMD; | |
2116 | break; | |
2117 | case TCOON: | |
2118 | //return -ENOIOCTLCMD; | |
2119 | break; | |
2120 | case TCIOFF: | |
2121 | if (STOP_CHAR(tty) != __DISABLED_CHAR) { | |
2122 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, | |
2123 | CMD_XMIT_NOW(STOP_CHAR(tty))); | |
2124 | } | |
2125 | break; | |
2126 | case TCION: | |
2127 | if (START_CHAR(tty) != __DISABLED_CHAR) { | |
2128 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, | |
2129 | CMD_XMIT_NOW(START_CHAR(tty))); | |
2130 | } | |
2131 | break; | |
2132 | default: | |
2133 | return -EINVAL; | |
2134 | } | |
2135 | return 0; | |
2136 | ||
2137 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
2138 | rc = tty_check_change(tty); | |
2139 | ||
2140 | ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc ); | |
2141 | ||
2142 | if (!rc) { | |
2143 | ip2_wait_until_sent(tty,0); | |
2144 | if (!arg) { | |
2145 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); | |
2146 | serviceOutgoingFifo( pCh->pMyBord ); | |
2147 | } | |
2148 | } | |
2149 | break; | |
2150 | ||
2151 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
2152 | rc = tty_check_change(tty); | |
2153 | ||
2154 | ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc ); | |
2155 | ||
2156 | if (!rc) { | |
2157 | ip2_wait_until_sent(tty,0); | |
2158 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2159 | CMD_SEND_BRK(arg ? arg*100 : 250)); | |
2160 | serviceOutgoingFifo ( pCh->pMyBord ); | |
2161 | } | |
2162 | break; | |
2163 | ||
2164 | case TIOCGSOFTCAR: | |
2165 | ||
2166 | ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc ); | |
2167 | ||
2168 | rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
2169 | if (rc) | |
2170 | return rc; | |
2171 | break; | |
2172 | ||
2173 | case TIOCSSOFTCAR: | |
2174 | ||
2175 | ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc ); | |
2176 | ||
2177 | rc = get_user(arg,(unsigned long __user *) argp); | |
2178 | if (rc) | |
2179 | return rc; | |
2180 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | |
2181 | | (arg ? CLOCAL : 0)); | |
2182 | ||
2183 | break; | |
2184 | ||
2185 | /* | |
2186 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask | |
2187 | * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS | |
2188 | * for masking). Caller should use TIOCGICOUNT to see which one it was | |
2189 | */ | |
2190 | case TIOCMIWAIT: | |
d9e39538 | 2191 | WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2192 | cprev = pCh->icount; /* note the counters on entry */ |
d9e39538 | 2193 | WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2194 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, |
2195 | CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); | |
2196 | init_waitqueue_entry(&wait, current); | |
2197 | add_wait_queue(&pCh->delta_msr_wait, &wait); | |
2198 | set_current_state( TASK_INTERRUPTIBLE ); | |
2199 | ||
2200 | serviceOutgoingFifo( pCh->pMyBord ); | |
2201 | for(;;) { | |
2202 | ip2trace (CHANN, ITRC_IOCTL, 10, 0 ); | |
2203 | ||
2204 | schedule(); | |
2205 | ||
2206 | ip2trace (CHANN, ITRC_IOCTL, 11, 0 ); | |
2207 | ||
2208 | /* see if a signal did it */ | |
2209 | if (signal_pending(current)) { | |
2210 | rc = -ERESTARTSYS; | |
2211 | break; | |
2212 | } | |
d9e39538 | 2213 | WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2214 | cnow = pCh->icount; /* atomic copy */ |
d9e39538 | 2215 | WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2216 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2217 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { | |
2218 | rc = -EIO; /* no change => rc */ | |
2219 | break; | |
2220 | } | |
2221 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2222 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2223 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2224 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
2225 | rc = 0; | |
2226 | break; | |
2227 | } | |
2228 | cprev = cnow; | |
2229 | } | |
2230 | set_current_state( TASK_RUNNING ); | |
2231 | remove_wait_queue(&pCh->delta_msr_wait, &wait); | |
2232 | ||
2233 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, | |
2234 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
2235 | if ( ! (pCh->flags & ASYNC_CHECK_CD)) { | |
2236 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP); | |
2237 | } | |
2238 | serviceOutgoingFifo( pCh->pMyBord ); | |
2239 | return rc; | |
2240 | break; | |
2241 | ||
2242 | /* | |
2243 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2244 | * Return: write counters to the user passed counter struct | |
2245 | * NB: both 1->0 and 0->1 transitions are counted except for RI where | |
2246 | * only 0->1 is counted. The controller is quite capable of counting | |
2247 | * both, but this done to preserve compatibility with the standard | |
2248 | * serial driver. | |
2249 | */ | |
2250 | case TIOCGICOUNT: | |
2251 | ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc ); | |
2252 | ||
d9e39538 | 2253 | WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2254 | cnow = pCh->icount; |
d9e39538 | 2255 | WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2256 | p_cuser = argp; |
2257 | rc = put_user(cnow.cts, &p_cuser->cts); | |
2258 | rc = put_user(cnow.dsr, &p_cuser->dsr); | |
2259 | rc = put_user(cnow.rng, &p_cuser->rng); | |
2260 | rc = put_user(cnow.dcd, &p_cuser->dcd); | |
2261 | rc = put_user(cnow.rx, &p_cuser->rx); | |
2262 | rc = put_user(cnow.tx, &p_cuser->tx); | |
2263 | rc = put_user(cnow.frame, &p_cuser->frame); | |
2264 | rc = put_user(cnow.overrun, &p_cuser->overrun); | |
2265 | rc = put_user(cnow.parity, &p_cuser->parity); | |
2266 | rc = put_user(cnow.brk, &p_cuser->brk); | |
2267 | rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); | |
2268 | break; | |
2269 | ||
2270 | /* | |
2271 | * The rest are not supported by this driver. By returning -ENOIOCTLCMD they | |
2272 | * will be passed to the line discipline for it to handle. | |
2273 | */ | |
2274 | case TIOCSERCONFIG: | |
2275 | case TIOCSERGWILD: | |
2276 | case TIOCSERGETLSR: | |
2277 | case TIOCSERSWILD: | |
2278 | case TIOCSERGSTRUCT: | |
2279 | case TIOCSERGETMULTI: | |
2280 | case TIOCSERSETMULTI: | |
2281 | ||
2282 | default: | |
2283 | ip2trace (CHANN, ITRC_IOCTL, 12, 0 ); | |
2284 | ||
2285 | rc = -ENOIOCTLCMD; | |
2286 | break; | |
2287 | } | |
2288 | ||
2289 | ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 ); | |
2290 | ||
2291 | return rc; | |
2292 | } | |
2293 | ||
2294 | /******************************************************************************/ | |
2295 | /* Function: GetSerialInfo() */ | |
2296 | /* Parameters: Pointer to channel structure */ | |
2297 | /* Pointer to old termios structure */ | |
2298 | /* Returns: Nothing */ | |
2299 | /* */ | |
2300 | /* Description: */ | |
2301 | /* This is to support the setserial command, and requires processing of the */ | |
2302 | /* standard Linux serial structure. */ | |
2303 | /******************************************************************************/ | |
2304 | static int | |
2305 | get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo ) | |
2306 | { | |
2307 | struct serial_struct tmp; | |
2308 | ||
2309 | memset ( &tmp, 0, sizeof(tmp) ); | |
2310 | tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; | |
2311 | if (BID_HAS_654(tmp.type)) { | |
2312 | tmp.type = PORT_16650; | |
2313 | } else { | |
2314 | tmp.type = PORT_CIRRUS; | |
2315 | } | |
2316 | tmp.line = pCh->port_index; | |
2317 | tmp.port = pCh->pMyBord->i2eBase; | |
2318 | tmp.irq = ip2config.irq[pCh->port_index/64]; | |
2319 | tmp.flags = pCh->flags; | |
2320 | tmp.baud_base = pCh->BaudBase; | |
2321 | tmp.close_delay = pCh->ClosingDelay; | |
2322 | tmp.closing_wait = pCh->ClosingWaitTime; | |
2323 | tmp.custom_divisor = pCh->BaudDivisor; | |
2324 | return copy_to_user(retinfo,&tmp,sizeof(*retinfo)); | |
2325 | } | |
2326 | ||
2327 | /******************************************************************************/ | |
2328 | /* Function: SetSerialInfo() */ | |
2329 | /* Parameters: Pointer to channel structure */ | |
2330 | /* Pointer to old termios structure */ | |
2331 | /* Returns: Nothing */ | |
2332 | /* */ | |
2333 | /* Description: */ | |
2334 | /* This function provides support for setserial, which uses the TIOCSSERIAL */ | |
2335 | /* ioctl. Not all setserial parameters are relevant. If the user attempts to */ | |
2336 | /* change the IRQ, address or type of the port the ioctl fails. */ | |
2337 | /******************************************************************************/ | |
2338 | static int | |
2339 | set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info ) | |
2340 | { | |
2341 | struct serial_struct ns; | |
2342 | int old_flags, old_baud_divisor; | |
2343 | ||
2344 | if (copy_from_user(&ns, new_info, sizeof (ns))) | |
2345 | return -EFAULT; | |
2346 | ||
2347 | /* | |
2348 | * We don't allow setserial to change IRQ, board address, type or baud | |
2349 | * base. Also line nunber as such is meaningless but we use it for our | |
2350 | * array index so it is fixed also. | |
2351 | */ | |
2352 | if ( (ns.irq != ip2config.irq[pCh->port_index]) | |
2353 | || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase))) | |
2354 | || (ns.baud_base != pCh->BaudBase) | |
2355 | || (ns.line != pCh->port_index) ) { | |
2356 | return -EINVAL; | |
2357 | } | |
2358 | ||
2359 | old_flags = pCh->flags; | |
2360 | old_baud_divisor = pCh->BaudDivisor; | |
2361 | ||
2362 | if ( !capable(CAP_SYS_ADMIN) ) { | |
2363 | if ( ( ns.close_delay != pCh->ClosingDelay ) || | |
2364 | ( (ns.flags & ~ASYNC_USR_MASK) != | |
2365 | (pCh->flags & ~ASYNC_USR_MASK) ) ) { | |
2366 | return -EPERM; | |
2367 | } | |
2368 | ||
2369 | pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | | |
2370 | (ns.flags & ASYNC_USR_MASK); | |
2371 | pCh->BaudDivisor = ns.custom_divisor; | |
2372 | } else { | |
2373 | pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | | |
2374 | (ns.flags & ASYNC_FLAGS); | |
2375 | pCh->BaudDivisor = ns.custom_divisor; | |
2376 | pCh->ClosingDelay = ns.close_delay * HZ/100; | |
2377 | pCh->ClosingWaitTime = ns.closing_wait * HZ/100; | |
2378 | } | |
2379 | ||
2380 | if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) | |
2381 | || (old_baud_divisor != pCh->BaudDivisor) ) { | |
2382 | // Invalidate speed and reset parameters | |
2383 | set_params( pCh, NULL ); | |
2384 | } | |
2385 | ||
2386 | return 0; | |
2387 | } | |
2388 | ||
2389 | /******************************************************************************/ | |
2390 | /* Function: ip2_set_termios() */ | |
2391 | /* Parameters: Pointer to tty structure */ | |
2392 | /* Pointer to old termios structure */ | |
2393 | /* Returns: Nothing */ | |
2394 | /* */ | |
2395 | /* Description: */ | |
2396 | /* */ | |
2397 | /* */ | |
2398 | /******************************************************************************/ | |
2399 | static void | |
606d099c | 2400 | ip2_set_termios( PTTY tty, struct ktermios *old_termios ) |
1da177e4 LT |
2401 | { |
2402 | i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; | |
2403 | ||
2404 | #ifdef IP2DEBUG_IOCTL | |
2405 | printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); | |
2406 | #endif | |
2407 | ||
2408 | set_params( pCh, old_termios ); | |
2409 | } | |
2410 | ||
2411 | /******************************************************************************/ | |
2412 | /* Function: ip2_set_line_discipline() */ | |
2413 | /* Parameters: Pointer to tty structure */ | |
2414 | /* Returns: Nothing */ | |
2415 | /* */ | |
2416 | /* Description: Does nothing */ | |
2417 | /* */ | |
2418 | /* */ | |
2419 | /******************************************************************************/ | |
2420 | static void | |
2421 | ip2_set_line_discipline ( PTTY tty ) | |
2422 | { | |
2423 | #ifdef IP2DEBUG_IOCTL | |
2424 | printk (KERN_DEBUG "IP2: set line discipline\n" ); | |
2425 | #endif | |
2426 | ||
2427 | ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); | |
2428 | ||
2429 | } | |
2430 | ||
2431 | /******************************************************************************/ | |
2432 | /* Function: SetLine Characteristics() */ | |
2433 | /* Parameters: Pointer to channel structure */ | |
2434 | /* Returns: Nothing */ | |
2435 | /* */ | |
2436 | /* Description: */ | |
2437 | /* This routine is called to update the channel structure with the new line */ | |
2438 | /* characteristics, and send the appropriate commands to the board when they */ | |
2439 | /* change. */ | |
2440 | /******************************************************************************/ | |
2441 | static void | |
606d099c | 2442 | set_params( i2ChanStrPtr pCh, struct ktermios *o_tios ) |
1da177e4 LT |
2443 | { |
2444 | tcflag_t cflag, iflag, lflag; | |
2445 | char stop_char, start_char; | |
606d099c | 2446 | struct ktermios dummy; |
1da177e4 LT |
2447 | |
2448 | lflag = pCh->pTTY->termios->c_lflag; | |
2449 | cflag = pCh->pTTY->termios->c_cflag; | |
2450 | iflag = pCh->pTTY->termios->c_iflag; | |
2451 | ||
2452 | if (o_tios == NULL) { | |
2453 | dummy.c_lflag = ~lflag; | |
2454 | dummy.c_cflag = ~cflag; | |
2455 | dummy.c_iflag = ~iflag; | |
2456 | o_tios = &dummy; | |
2457 | } | |
2458 | ||
2459 | { | |
2460 | switch ( cflag & CBAUD ) { | |
2461 | case B0: | |
2462 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); | |
2463 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
2464 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
2465 | pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); | |
2466 | goto service_it; | |
2467 | break; | |
2468 | case B38400: | |
2469 | /* | |
2470 | * This is the speed that is overloaded with all the other high | |
2471 | * speeds, depending upon the flag settings. | |
2472 | */ | |
2473 | if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { | |
2474 | pCh->speed = CBR_57600; | |
2475 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { | |
2476 | pCh->speed = CBR_115200; | |
2477 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { | |
2478 | pCh->speed = CBR_C1; | |
2479 | } else { | |
2480 | pCh->speed = CBR_38400; | |
2481 | } | |
2482 | break; | |
2483 | case B50: pCh->speed = CBR_50; break; | |
2484 | case B75: pCh->speed = CBR_75; break; | |
2485 | case B110: pCh->speed = CBR_110; break; | |
2486 | case B134: pCh->speed = CBR_134; break; | |
2487 | case B150: pCh->speed = CBR_150; break; | |
2488 | case B200: pCh->speed = CBR_200; break; | |
2489 | case B300: pCh->speed = CBR_300; break; | |
2490 | case B600: pCh->speed = CBR_600; break; | |
2491 | case B1200: pCh->speed = CBR_1200; break; | |
2492 | case B1800: pCh->speed = CBR_1800; break; | |
2493 | case B2400: pCh->speed = CBR_2400; break; | |
2494 | case B4800: pCh->speed = CBR_4800; break; | |
2495 | case B9600: pCh->speed = CBR_9600; break; | |
2496 | case B19200: pCh->speed = CBR_19200; break; | |
2497 | case B57600: pCh->speed = CBR_57600; break; | |
2498 | case B115200: pCh->speed = CBR_115200; break; | |
2499 | case B153600: pCh->speed = CBR_153600; break; | |
2500 | case B230400: pCh->speed = CBR_230400; break; | |
2501 | case B307200: pCh->speed = CBR_307200; break; | |
2502 | case B460800: pCh->speed = CBR_460800; break; | |
2503 | case B921600: pCh->speed = CBR_921600; break; | |
2504 | default: pCh->speed = CBR_9600; break; | |
2505 | } | |
2506 | if ( pCh->speed == CBR_C1 ) { | |
2507 | // Process the custom speed parameters. | |
2508 | int bps = pCh->BaudBase / pCh->BaudDivisor; | |
2509 | if ( bps == 921600 ) { | |
2510 | pCh->speed = CBR_921600; | |
2511 | } else { | |
2512 | bps = bps/10; | |
2513 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); | |
2514 | } | |
2515 | } | |
2516 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); | |
2517 | ||
2518 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); | |
2519 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
2520 | } | |
2521 | if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) | |
2522 | { | |
2523 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, | |
2524 | CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); | |
2525 | } | |
2526 | if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) | |
2527 | { | |
2528 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, | |
2529 | CMD_SETPAR( | |
2530 | (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) | |
2531 | ) | |
2532 | ); | |
2533 | } | |
2534 | /* byte size and parity */ | |
2535 | if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) | |
2536 | { | |
2537 | int datasize; | |
2538 | switch ( cflag & CSIZE ) { | |
2539 | case CS5: datasize = CSZ_5; break; | |
2540 | case CS6: datasize = CSZ_6; break; | |
2541 | case CS7: datasize = CSZ_7; break; | |
2542 | case CS8: datasize = CSZ_8; break; | |
2543 | default: datasize = CSZ_5; break; /* as per serial.c */ | |
2544 | } | |
2545 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); | |
2546 | } | |
2547 | /* Process CTS flow control flag setting */ | |
2548 | if ( (cflag & CRTSCTS) ) { | |
2549 | i2QueueCommands(PTYPE_INLINE, pCh, 100, | |
2550 | 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); | |
2551 | } else { | |
2552 | i2QueueCommands(PTYPE_INLINE, pCh, 100, | |
2553 | 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
2554 | } | |
2555 | // | |
2556 | // Process XON/XOFF flow control flags settings | |
2557 | // | |
2558 | stop_char = STOP_CHAR(pCh->pTTY); | |
2559 | start_char = START_CHAR(pCh->pTTY); | |
2560 | ||
2561 | //////////// can't be \000 | |
2562 | if (stop_char == __DISABLED_CHAR ) | |
2563 | { | |
2564 | stop_char = ~__DISABLED_CHAR; | |
2565 | } | |
2566 | if (start_char == __DISABLED_CHAR ) | |
2567 | { | |
2568 | start_char = ~__DISABLED_CHAR; | |
2569 | } | |
2570 | ///////////////////////////////// | |
2571 | ||
2572 | if ( o_tios->c_cc[VSTART] != start_char ) | |
2573 | { | |
2574 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); | |
2575 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); | |
2576 | } | |
2577 | if ( o_tios->c_cc[VSTOP] != stop_char ) | |
2578 | { | |
2579 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); | |
2580 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); | |
2581 | } | |
2582 | if (stop_char == __DISABLED_CHAR ) | |
2583 | { | |
2584 | stop_char = ~__DISABLED_CHAR; //TEST123 | |
2585 | goto no_xoff; | |
2586 | } | |
2587 | if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) | |
2588 | { | |
2589 | if ( iflag & IXOFF ) { // Enable XOFF output flow control | |
2590 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); | |
2591 | } else { // Disable XOFF output flow control | |
2592 | no_xoff: | |
2593 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); | |
2594 | } | |
2595 | } | |
2596 | if (start_char == __DISABLED_CHAR ) | |
2597 | { | |
2598 | goto no_xon; | |
2599 | } | |
2600 | if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) | |
2601 | { | |
2602 | if ( iflag & IXON ) { | |
2603 | if ( iflag & IXANY ) { // Enable XON/XANY output flow control | |
2604 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); | |
2605 | } else { // Enable XON output flow control | |
2606 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); | |
2607 | } | |
2608 | } else { // Disable XON output flow control | |
2609 | no_xon: | |
2610 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); | |
2611 | } | |
2612 | } | |
2613 | if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) | |
2614 | { | |
2615 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2616 | CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); | |
2617 | } | |
2618 | if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) | |
2619 | { | |
2620 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2621 | CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); | |
2622 | } | |
2623 | ||
2624 | if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) | |
2625 | ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) | |
2626 | { | |
2627 | char brkrpt = 0; | |
2628 | char parrpt = 0; | |
2629 | ||
2630 | if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ | |
2631 | /* Ignore breaks altogether */ | |
2632 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); | |
2633 | } else { | |
2634 | if ( iflag & BRKINT ) { | |
2635 | if ( iflag & PARMRK ) { | |
2636 | brkrpt = 0x0a; // exception an inline triple | |
2637 | } else { | |
2638 | brkrpt = 0x1a; // exception and NULL | |
2639 | } | |
2640 | brkrpt |= 0x04; // flush input | |
2641 | } else { | |
2642 | if ( iflag & PARMRK ) { | |
2643 | brkrpt = 0x0b; //POSIX triple \0377 \0 \0 | |
2644 | } else { | |
2645 | brkrpt = 0x01; // Null only | |
2646 | } | |
2647 | } | |
2648 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); | |
2649 | } | |
2650 | ||
2651 | if (iflag & IGNPAR) { | |
2652 | parrpt = 0x20; | |
2653 | /* would be 2 for not cirrus bug */ | |
2654 | /* would be 0x20 cept for cirrus bug */ | |
2655 | } else { | |
2656 | if ( iflag & PARMRK ) { | |
2657 | /* | |
2658 | * Replace error characters with 3-byte sequence (\0377,\0,char) | |
2659 | */ | |
2660 | parrpt = 0x04 ; | |
2661 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); | |
2662 | } else { | |
2663 | parrpt = 0x03; | |
2664 | } | |
2665 | } | |
2666 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); | |
2667 | } | |
2668 | if (cflag & CLOCAL) { | |
2669 | // Status reporting fails for DCD if this is off | |
2670 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); | |
2671 | pCh->flags &= ~ASYNC_CHECK_CD; | |
2672 | } else { | |
2673 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); | |
2674 | pCh->flags |= ASYNC_CHECK_CD; | |
2675 | } | |
2676 | ||
1da177e4 LT |
2677 | service_it: |
2678 | i2DrainOutput( pCh, 100 ); | |
2679 | } | |
2680 | ||
2681 | /******************************************************************************/ | |
2682 | /* IPL Device Section */ | |
2683 | /******************************************************************************/ | |
2684 | ||
2685 | /******************************************************************************/ | |
2686 | /* Function: ip2_ipl_read() */ | |
2687 | /* Parameters: Pointer to device inode */ | |
2688 | /* Pointer to file structure */ | |
2689 | /* Pointer to data */ | |
2690 | /* Number of bytes to read */ | |
2691 | /* Returns: Success or failure */ | |
2692 | /* */ | |
2693 | /* Description: Ugly */ | |
2694 | /* */ | |
2695 | /* */ | |
2696 | /******************************************************************************/ | |
2697 | ||
2698 | static | |
2699 | ssize_t | |
2700 | ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off ) | |
2701 | { | |
a7113a96 | 2702 | unsigned int minor = iminor(pFile->f_path.dentry->d_inode); |
1da177e4 LT |
2703 | int rc = 0; |
2704 | ||
2705 | #ifdef IP2DEBUG_IPL | |
2706 | printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); | |
2707 | #endif | |
2708 | ||
2709 | switch( minor ) { | |
2710 | case 0: // IPL device | |
2711 | rc = -EINVAL; | |
2712 | break; | |
2713 | case 1: // Status dump | |
2714 | rc = -EINVAL; | |
2715 | break; | |
2716 | case 2: // Ping device | |
2717 | rc = -EINVAL; | |
2718 | break; | |
2719 | case 3: // Trace device | |
2720 | rc = DumpTraceBuffer ( pData, count ); | |
2721 | break; | |
2722 | case 4: // Trace device | |
2723 | rc = DumpFifoBuffer ( pData, count ); | |
2724 | break; | |
2725 | default: | |
2726 | rc = -ENODEV; | |
2727 | break; | |
2728 | } | |
2729 | return rc; | |
2730 | } | |
2731 | ||
2732 | static int | |
2733 | DumpFifoBuffer ( char __user *pData, int count ) | |
2734 | { | |
2735 | #ifdef DEBUG_FIFO | |
2736 | int rc; | |
2737 | rc = copy_to_user(pData, DBGBuf, count); | |
2738 | ||
2739 | printk(KERN_DEBUG "Last index %d\n", I ); | |
2740 | ||
2741 | return count; | |
2742 | #endif /* DEBUG_FIFO */ | |
2743 | return 0; | |
2744 | } | |
2745 | ||
2746 | static int | |
2747 | DumpTraceBuffer ( char __user *pData, int count ) | |
2748 | { | |
2749 | #ifdef IP2DEBUG_TRACE | |
2750 | int rc; | |
2751 | int dumpcount; | |
2752 | int chunk; | |
2753 | int *pIndex = (int __user *)pData; | |
2754 | ||
2755 | if ( count < (sizeof(int) * 6) ) { | |
2756 | return -EIO; | |
2757 | } | |
2758 | rc = put_user(tracewrap, pIndex ); | |
2759 | rc = put_user(TRACEMAX, ++pIndex ); | |
2760 | rc = put_user(tracestrip, ++pIndex ); | |
2761 | rc = put_user(tracestuff, ++pIndex ); | |
2762 | pData += sizeof(int) * 6; | |
2763 | count -= sizeof(int) * 6; | |
2764 | ||
2765 | dumpcount = tracestuff - tracestrip; | |
2766 | if ( dumpcount < 0 ) { | |
2767 | dumpcount += TRACEMAX; | |
2768 | } | |
2769 | if ( dumpcount > count ) { | |
2770 | dumpcount = count; | |
2771 | } | |
2772 | chunk = TRACEMAX - tracestrip; | |
2773 | if ( dumpcount > chunk ) { | |
2774 | rc = copy_to_user(pData, &tracebuf[tracestrip], | |
2775 | chunk * sizeof(tracebuf[0]) ); | |
2776 | pData += chunk * sizeof(tracebuf[0]); | |
2777 | tracestrip = 0; | |
2778 | chunk = dumpcount - chunk; | |
2779 | } else { | |
2780 | chunk = dumpcount; | |
2781 | } | |
2782 | rc = copy_to_user(pData, &tracebuf[tracestrip], | |
2783 | chunk * sizeof(tracebuf[0]) ); | |
2784 | tracestrip += chunk; | |
2785 | tracewrap = 0; | |
2786 | ||
2787 | rc = put_user(tracestrip, ++pIndex ); | |
2788 | rc = put_user(tracestuff, ++pIndex ); | |
2789 | ||
2790 | return dumpcount; | |
2791 | #else | |
2792 | return 0; | |
2793 | #endif | |
2794 | } | |
2795 | ||
2796 | /******************************************************************************/ | |
2797 | /* Function: ip2_ipl_write() */ | |
2798 | /* Parameters: */ | |
2799 | /* Pointer to file structure */ | |
2800 | /* Pointer to data */ | |
2801 | /* Number of bytes to write */ | |
2802 | /* Returns: Success or failure */ | |
2803 | /* */ | |
2804 | /* Description: */ | |
2805 | /* */ | |
2806 | /* */ | |
2807 | /******************************************************************************/ | |
2808 | static ssize_t | |
2809 | ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off) | |
2810 | { | |
2811 | #ifdef IP2DEBUG_IPL | |
2812 | printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); | |
2813 | #endif | |
2814 | return 0; | |
2815 | } | |
2816 | ||
2817 | /******************************************************************************/ | |
2818 | /* Function: ip2_ipl_ioctl() */ | |
2819 | /* Parameters: Pointer to device inode */ | |
2820 | /* Pointer to file structure */ | |
2821 | /* Command */ | |
2822 | /* Argument */ | |
2823 | /* Returns: Success or failure */ | |
2824 | /* */ | |
2825 | /* Description: */ | |
2826 | /* */ | |
2827 | /* */ | |
2828 | /******************************************************************************/ | |
2829 | static int | |
2830 | ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg ) | |
2831 | { | |
2832 | unsigned int iplminor = iminor(pInode); | |
2833 | int rc = 0; | |
2834 | void __user *argp = (void __user *)arg; | |
2835 | ULONG __user *pIndex = argp; | |
2836 | i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; | |
2837 | i2ChanStrPtr pCh; | |
2838 | ||
2839 | #ifdef IP2DEBUG_IPL | |
2840 | printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); | |
2841 | #endif | |
2842 | ||
2843 | switch ( iplminor ) { | |
2844 | case 0: // IPL device | |
2845 | rc = -EINVAL; | |
2846 | break; | |
2847 | case 1: // Status dump | |
2848 | case 5: | |
2849 | case 9: | |
2850 | case 13: | |
2851 | switch ( cmd ) { | |
2852 | case 64: /* Driver - ip2stat */ | |
2853 | rc = put_user(ip2_tty_driver->refcount, pIndex++ ); | |
2854 | rc = put_user(irq_counter, pIndex++ ); | |
2855 | rc = put_user(bh_counter, pIndex++ ); | |
2856 | break; | |
2857 | ||
2858 | case 65: /* Board - ip2stat */ | |
2859 | if ( pB ) { | |
2860 | rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); | |
2861 | rc = put_user(INB(pB->i2eStatus), | |
2862 | (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); | |
2863 | } else { | |
2864 | rc = -ENODEV; | |
2865 | } | |
2866 | break; | |
2867 | ||
2868 | default: | |
2869 | if (cmd < IP2_MAX_PORTS) { | |
2870 | pCh = DevTable[cmd]; | |
2871 | if ( pCh ) | |
2872 | { | |
2873 | rc = copy_to_user(argp, pCh, sizeof(i2ChanStr)); | |
2874 | } else { | |
2875 | rc = -ENODEV; | |
2876 | } | |
2877 | } else { | |
2878 | rc = -EINVAL; | |
2879 | } | |
2880 | } | |
2881 | break; | |
2882 | ||
2883 | case 2: // Ping device | |
2884 | rc = -EINVAL; | |
2885 | break; | |
2886 | case 3: // Trace device | |
def9391c AM |
2887 | /* |
2888 | * akpm: This used to write a whole bunch of function addresses | |
2889 | * to userspace, which generated lots of put_user() warnings. | |
2890 | * I killed it all. Just return "success" and don't do | |
2891 | * anything. | |
2892 | */ | |
2893 | if (cmd == 1) | |
2894 | rc = 0; | |
2895 | else | |
1da177e4 | 2896 | rc = -EINVAL; |
1da177e4 LT |
2897 | break; |
2898 | ||
2899 | default: | |
2900 | rc = -ENODEV; | |
2901 | break; | |
2902 | } | |
2903 | return rc; | |
2904 | } | |
2905 | ||
2906 | /******************************************************************************/ | |
2907 | /* Function: ip2_ipl_open() */ | |
2908 | /* Parameters: Pointer to device inode */ | |
2909 | /* Pointer to file structure */ | |
2910 | /* Returns: Success or failure */ | |
2911 | /* */ | |
2912 | /* Description: */ | |
2913 | /* */ | |
2914 | /* */ | |
2915 | /******************************************************************************/ | |
2916 | static int | |
2917 | ip2_ipl_open( struct inode *pInode, struct file *pFile ) | |
2918 | { | |
2919 | unsigned int iplminor = iminor(pInode); | |
2920 | i2eBordStrPtr pB; | |
2921 | i2ChanStrPtr pCh; | |
2922 | ||
2923 | #ifdef IP2DEBUG_IPL | |
2924 | printk (KERN_DEBUG "IP2IPL: open\n" ); | |
2925 | #endif | |
2926 | ||
2927 | switch(iplminor) { | |
2928 | // These are the IPL devices | |
2929 | case 0: | |
2930 | case 4: | |
2931 | case 8: | |
2932 | case 12: | |
2933 | break; | |
2934 | ||
2935 | // These are the status devices | |
2936 | case 1: | |
2937 | case 5: | |
2938 | case 9: | |
2939 | case 13: | |
2940 | break; | |
2941 | ||
2942 | // These are the debug devices | |
2943 | case 2: | |
2944 | case 6: | |
2945 | case 10: | |
2946 | case 14: | |
2947 | pB = i2BoardPtrTable[iplminor / 4]; | |
2948 | pCh = (i2ChanStrPtr) pB->i2eChannelPtr; | |
2949 | break; | |
2950 | ||
2951 | // This is the trace device | |
2952 | case 3: | |
2953 | break; | |
2954 | } | |
2955 | return 0; | |
2956 | } | |
2957 | /******************************************************************************/ | |
2958 | /* Function: ip2_read_procmem */ | |
2959 | /* Parameters: */ | |
2960 | /* */ | |
2961 | /* Returns: Length of output */ | |
2962 | /* */ | |
2963 | /* Description: */ | |
2964 | /* Supplies some driver operating parameters */ | |
2965 | /* Not real useful unless your debugging the fifo */ | |
2966 | /* */ | |
2967 | /******************************************************************************/ | |
2968 | ||
2969 | #define LIMIT (PAGE_SIZE - 120) | |
2970 | ||
2971 | static int | |
2972 | ip2_read_procmem(char *buf, char **start, off_t offset, int len) | |
2973 | { | |
2974 | i2eBordStrPtr pB; | |
2975 | i2ChanStrPtr pCh; | |
2976 | PTTY tty; | |
2977 | int i; | |
2978 | ||
2979 | len = 0; | |
2980 | ||
2981 | #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" | |
2982 | #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" | |
2983 | #define FMTLIN3 " 0x%04x 0x%04x rc flow\n" | |
2984 | ||
2985 | len += sprintf(buf+len,"\n"); | |
2986 | ||
2987 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
2988 | pB = i2BoardPtrTable[i]; | |
2989 | if ( pB ) { | |
2990 | len += sprintf(buf+len,"board %d:\n",i); | |
2991 | len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n", | |
2992 | pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); | |
2993 | } | |
2994 | } | |
2995 | ||
2996 | len += sprintf(buf+len,"#: tty flags, port flags, cflags, iflags\n"); | |
2997 | for (i=0; i < IP2_MAX_PORTS; i++) { | |
2998 | if (len > LIMIT) | |
2999 | break; | |
3000 | pCh = DevTable[i]; | |
3001 | if (pCh) { | |
3002 | tty = pCh->pTTY; | |
3003 | if (tty && tty->count) { | |
3004 | len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags, | |
3005 | tty->termios->c_cflag,tty->termios->c_iflag); | |
3006 | ||
3007 | len += sprintf(buf+len,FMTLIN2, | |
3008 | pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); | |
3009 | len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room); | |
3010 | } | |
3011 | } | |
3012 | } | |
3013 | return len; | |
3014 | } | |
3015 | ||
3016 | /* | |
3017 | * This is the handler for /proc/tty/driver/ip2 | |
3018 | * | |
3019 | * This stretch of code has been largely plagerized from at least three | |
3020 | * different sources including ip2mkdev.c and a couple of other drivers. | |
3021 | * The bugs are all mine. :-) =mhw= | |
3022 | */ | |
3023 | static int ip2_read_proc(char *page, char **start, off_t off, | |
3024 | int count, int *eof, void *data) | |
3025 | { | |
3026 | int i, j, box; | |
3027 | int len = 0; | |
3028 | int boxes = 0; | |
3029 | int ports = 0; | |
3030 | int tports = 0; | |
3031 | off_t begin = 0; | |
3032 | i2eBordStrPtr pB; | |
3033 | ||
3034 | len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion ); | |
3035 | len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", | |
3036 | IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, | |
3037 | IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); | |
3038 | ||
3039 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
3040 | /* This need to be reset for a board by board count... */ | |
3041 | boxes = 0; | |
3042 | pB = i2BoardPtrTable[i]; | |
3043 | if( pB ) { | |
3044 | switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) | |
3045 | { | |
3046 | case POR_ID_FIIEX: | |
3047 | len += sprintf( page+len, "Board %d: EX ports=", i ); | |
3048 | for( box = 0; box < ABS_MAX_BOXES; ++box ) | |
3049 | { | |
3050 | ports = 0; | |
3051 | ||
3052 | if( pB->i2eChannelMap[box] != 0 ) ++boxes; | |
3053 | for( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
3054 | { | |
3055 | if( pB->i2eChannelMap[box] & 1<< j ) { | |
3056 | ++ports; | |
3057 | } | |
3058 | } | |
3059 | len += sprintf( page+len, "%d,", ports ); | |
3060 | tports += ports; | |
3061 | } | |
3062 | ||
3063 | --len; /* Backup over that last comma */ | |
3064 | ||
3065 | len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 ); | |
3066 | break; | |
3067 | ||
3068 | case POR_ID_II_4: | |
3069 | len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i ); | |
3070 | tports = ports = 4; | |
3071 | break; | |
3072 | ||
3073 | case POR_ID_II_8: | |
3074 | len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i ); | |
3075 | tports = ports = 8; | |
3076 | break; | |
3077 | ||
3078 | case POR_ID_II_8R: | |
3079 | len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i ); | |
3080 | tports = ports = 8; | |
3081 | break; | |
3082 | ||
3083 | default: | |
3084 | len += sprintf(page+len, "Board %d: unknown", i ); | |
3085 | /* Don't try and probe for minor numbers */ | |
3086 | tports = ports = 0; | |
3087 | } | |
3088 | ||
3089 | } else { | |
3090 | /* Don't try and probe for minor numbers */ | |
3091 | len += sprintf(page+len, "Board %d: vacant", i ); | |
3092 | tports = ports = 0; | |
3093 | } | |
3094 | ||
3095 | if( tports ) { | |
3096 | len += sprintf(page+len, " minors=" ); | |
3097 | ||
3098 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) | |
3099 | { | |
3100 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
3101 | { | |
3102 | if ( pB->i2eChannelMap[box] & (1 << j) ) | |
3103 | { | |
3104 | len += sprintf (page+len,"%d,", | |
3105 | j + ABS_BIGGEST_BOX * | |
3106 | (box+i*ABS_MAX_BOXES)); | |
3107 | } | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | page[ len - 1 ] = '\n'; /* Overwrite that last comma */ | |
3112 | } else { | |
3113 | len += sprintf (page+len,"\n" ); | |
3114 | } | |
3115 | ||
3116 | if (len+begin > off+count) | |
3117 | break; | |
3118 | if (len+begin < off) { | |
3119 | begin += len; | |
3120 | len = 0; | |
3121 | } | |
3122 | } | |
3123 | ||
3124 | if (i >= IP2_MAX_BOARDS) | |
3125 | *eof = 1; | |
3126 | if (off >= len+begin) | |
3127 | return 0; | |
3128 | ||
3129 | *start = page + (off-begin); | |
3130 | return ((count < begin+len-off) ? count : begin+len-off); | |
3131 | } | |
3132 | ||
3133 | /******************************************************************************/ | |
3134 | /* Function: ip2trace() */ | |
3135 | /* Parameters: Value to add to trace buffer */ | |
3136 | /* Returns: Nothing */ | |
3137 | /* */ | |
3138 | /* Description: */ | |
3139 | /* */ | |
3140 | /* */ | |
3141 | /******************************************************************************/ | |
3142 | #ifdef IP2DEBUG_TRACE | |
3143 | void | |
3144 | ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) | |
3145 | { | |
3146 | long flags; | |
3147 | unsigned long *pCode = &codes; | |
3148 | union ip2breadcrumb bc; | |
3149 | i2ChanStrPtr pCh; | |
3150 | ||
3151 | ||
3152 | tracebuf[tracestuff++] = jiffies; | |
3153 | if ( tracestuff == TRACEMAX ) { | |
3154 | tracestuff = 0; | |
3155 | } | |
3156 | if ( tracestuff == tracestrip ) { | |
3157 | if ( ++tracestrip == TRACEMAX ) { | |
3158 | tracestrip = 0; | |
3159 | } | |
3160 | ++tracewrap; | |
3161 | } | |
3162 | ||
3163 | bc.hdr.port = 0xff & pn; | |
3164 | bc.hdr.cat = cat; | |
3165 | bc.hdr.codes = (unsigned char)( codes & 0xff ); | |
3166 | bc.hdr.label = label; | |
3167 | tracebuf[tracestuff++] = bc.value; | |
3168 | ||
3169 | for (;;) { | |
3170 | if ( tracestuff == TRACEMAX ) { | |
3171 | tracestuff = 0; | |
3172 | } | |
3173 | if ( tracestuff == tracestrip ) { | |
3174 | if ( ++tracestrip == TRACEMAX ) { | |
3175 | tracestrip = 0; | |
3176 | } | |
3177 | ++tracewrap; | |
3178 | } | |
3179 | ||
3180 | if ( !codes-- ) | |
3181 | break; | |
3182 | ||
3183 | tracebuf[tracestuff++] = *++pCode; | |
3184 | } | |
3185 | } | |
3186 | #endif | |
3187 | ||
3188 | ||
3189 | MODULE_LICENSE("GPL"); | |
eb0e71c7 CS |
3190 | |
3191 | static struct pci_device_id ip2main_pci_tbl[] __devinitdata = { | |
3192 | { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) }, | |
3193 | { } | |
3194 | }; | |
3195 | ||
3196 | MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl); |