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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> | |
613655fa | 101 | #include <linux/mutex.h> |
547d8bb7 DW |
102 | #include <linux/firmware.h> |
103 | #include <linux/platform_device.h> | |
1da177e4 LT |
104 | |
105 | #include <linux/tty.h> | |
106 | #include <linux/tty_flip.h> | |
107 | #include <linux/termios.h> | |
108 | #include <linux/tty_driver.h> | |
109 | #include <linux/serial.h> | |
110 | #include <linux/ptrace.h> | |
111 | #include <linux/ioport.h> | |
112 | ||
113 | #include <linux/cdk.h> | |
114 | #include <linux/comstats.h> | |
115 | #include <linux/delay.h> | |
116 | #include <linux/bitops.h> | |
117 | ||
118 | #include <asm/system.h> | |
119 | #include <asm/io.h> | |
120 | #include <asm/irq.h> | |
121 | ||
122 | #include <linux/vmalloc.h> | |
123 | #include <linux/init.h> | |
1da177e4 LT |
124 | |
125 | #include <asm/uaccess.h> | |
126 | ||
9c4b562a AB |
127 | #include "ip2types.h" |
128 | #include "ip2trace.h" | |
129 | #include "ip2ioctl.h" | |
130 | #include "ip2.h" | |
131 | #include "i2ellis.h" | |
132 | #include "i2lib.h" | |
1da177e4 LT |
133 | |
134 | /***************** | |
135 | * /proc/ip2mem * | |
136 | *****************/ | |
137 | ||
138 | #include <linux/proc_fs.h> | |
4a5cdb5b | 139 | #include <linux/seq_file.h> |
1da177e4 | 140 | |
613655fa | 141 | static DEFINE_MUTEX(ip2_mutex); |
4a5cdb5b | 142 | static const struct file_operations ip2mem_proc_fops; |
cdda7cd9 | 143 | static const struct file_operations ip2_proc_fops; |
1da177e4 LT |
144 | |
145 | /********************/ | |
146 | /* Type Definitions */ | |
147 | /********************/ | |
148 | ||
149 | /*************/ | |
150 | /* Constants */ | |
151 | /*************/ | |
152 | ||
153 | /* String constants to identify ourselves */ | |
cf176bc3 JS |
154 | static const char pcName[] = "Computone IntelliPort Plus multiport driver"; |
155 | static const char pcVersion[] = "1.2.14"; | |
1da177e4 LT |
156 | |
157 | /* String constants for port names */ | |
cf176bc3 JS |
158 | static const char pcDriver_name[] = "ip2"; |
159 | static const char pcIpl[] = "ip2ipl"; | |
1da177e4 | 160 | |
1da177e4 LT |
161 | /***********************/ |
162 | /* Function Prototypes */ | |
163 | /***********************/ | |
164 | ||
165 | /* Global module entry functions */ | |
166 | ||
167 | /* Private (static) functions */ | |
168 | static int ip2_open(PTTY, struct file *); | |
169 | static void ip2_close(PTTY, struct file *); | |
d9e39538 | 170 | static int ip2_write(PTTY, const unsigned char *, int); |
f34d7a5b | 171 | static int ip2_putchar(PTTY, unsigned char); |
1da177e4 LT |
172 | static void ip2_flush_chars(PTTY); |
173 | static int ip2_write_room(PTTY); | |
174 | static int ip2_chars_in_buf(PTTY); | |
175 | static void ip2_flush_buffer(PTTY); | |
6caa76b7 | 176 | static int ip2_ioctl(PTTY, UINT, ULONG); |
606d099c | 177 | static void ip2_set_termios(PTTY, struct ktermios *); |
1da177e4 LT |
178 | static void ip2_set_line_discipline(PTTY); |
179 | static void ip2_throttle(PTTY); | |
180 | static void ip2_unthrottle(PTTY); | |
181 | static void ip2_stop(PTTY); | |
182 | static void ip2_start(PTTY); | |
183 | static void ip2_hangup(PTTY); | |
60b33c13 | 184 | static int ip2_tiocmget(struct tty_struct *tty); |
20b9d177 | 185 | static int ip2_tiocmset(struct tty_struct *tty, |
1da177e4 | 186 | unsigned int set, unsigned int clear); |
0587102c AC |
187 | static int ip2_get_icount(struct tty_struct *tty, |
188 | struct serial_icounter_struct *icount); | |
1da177e4 LT |
189 | |
190 | static void set_irq(int, int); | |
c4028958 | 191 | static void ip2_interrupt_bh(struct work_struct *work); |
7d12e780 | 192 | static irqreturn_t ip2_interrupt(int irq, void *dev_id); |
1da177e4 LT |
193 | static void ip2_poll(unsigned long arg); |
194 | static inline void service_all_boards(void); | |
c4028958 DH |
195 | static void do_input(struct work_struct *); |
196 | static void do_status(struct work_struct *); | |
1da177e4 LT |
197 | |
198 | static void ip2_wait_until_sent(PTTY,int); | |
199 | ||
606d099c | 200 | static void set_params (i2ChanStrPtr, struct ktermios *); |
1da177e4 LT |
201 | static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *); |
202 | static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *); | |
203 | ||
204 | static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *); | |
205 | static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *); | |
47be36a2 | 206 | static long ip2_ipl_ioctl(struct file *, UINT, ULONG); |
1da177e4 LT |
207 | static int ip2_ipl_open(struct inode *, struct file *); |
208 | ||
209 | static int DumpTraceBuffer(char __user *, int); | |
210 | static int DumpFifoBuffer( char __user *, int); | |
211 | ||
547d8bb7 | 212 | static void ip2_init_board(int, const struct firmware *); |
1da177e4 | 213 | static unsigned short find_eisa_board(int); |
02c95a62 | 214 | static int ip2_setup(char *str); |
1da177e4 LT |
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, | |
47be36a2 | 240 | .unlocked_ioctl = ip2_ipl_ioctl, |
1da177e4 | 241 | .open = ip2_ipl_open, |
6038f373 | 242 | .llseek = noop_llseek, |
1da177e4 LT |
243 | }; |
244 | ||
cf176bc3 JS |
245 | static unsigned long irq_counter; |
246 | static unsigned long bh_counter; | |
1da177e4 LT |
247 | |
248 | // Use immediate queue to service interrupts | |
249 | #define USE_IQI | |
250 | //#define USE_IQ // PCI&2.2 needs work | |
251 | ||
252 | /* The timer_list entry for our poll routine. If interrupt operation is not | |
253 | * selected, the board is serviced periodically to see if anything needs doing. | |
254 | */ | |
255 | #define POLL_TIMEOUT (jiffies + 1) | |
8d06afab | 256 | static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0); |
1da177e4 LT |
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 | ||
795877cf | 271 | #ifdef IP2DEBUG_OPEN |
7d7b93c1 AC |
272 | #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] ttyc=%d, modc=%x -> %s\n", \ |
273 | tty->name,(pCh->flags), \ | |
1da177e4 LT |
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"); | |
47babd4c | 291 | MODULE_LICENSE("GPL"); |
1da177e4 | 292 | |
02c95a62 RM |
293 | #define MAX_CMD_STR 50 |
294 | ||
cf176bc3 | 295 | static int poll_only; |
02c95a62 | 296 | static char cmd[MAX_CMD_STR]; |
1da177e4 LT |
297 | |
298 | static int Eisa_irq; | |
299 | static int Eisa_slot; | |
300 | ||
301 | static int iindx; | |
302 | static char rirqs[IP2_MAX_BOARDS]; | |
303 | static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; | |
304 | ||
47babd4c JS |
305 | /* Note: Add compiled in defaults to these arrays, not to the structure |
306 | in ip2.h any longer. That structure WILL get overridden | |
307 | by these values, or command line values, or insmod values!!! =mhw= | |
308 | */ | |
309 | static int io[IP2_MAX_BOARDS]; | |
310 | static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 }; | |
311 | ||
312 | MODULE_AUTHOR("Doug McNash"); | |
313 | MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); | |
314 | module_param_array(irq, int, NULL, 0); | |
315 | MODULE_PARM_DESC(irq, "Interrupts for IntelliPort Cards"); | |
316 | module_param_array(io, int, NULL, 0); | |
317 | MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards"); | |
318 | module_param(poll_only, bool, 0); | |
319 | MODULE_PARM_DESC(poll_only, "Do not use card interrupts"); | |
02c95a62 RM |
320 | module_param_string(ip2, cmd, MAX_CMD_STR, 0); |
321 | MODULE_PARM_DESC(ip2, "Contains module parameter passed with 'ip2='"); | |
47babd4c | 322 | |
1da177e4 | 323 | /* for sysfs class support */ |
ca8eca68 | 324 | static struct class *ip2_class; |
1da177e4 | 325 | |
f1ddfd95 | 326 | /* Some functions to keep track of what irqs we have */ |
1da177e4 | 327 | |
f1ddfd95 | 328 | static int __init is_valid_irq(int irq) |
1da177e4 LT |
329 | { |
330 | int *i = Valid_Irqs; | |
331 | ||
f1ddfd95 | 332 | while (*i != 0 && *i != irq) |
1da177e4 | 333 | i++; |
f1ddfd95 JS |
334 | |
335 | return *i; | |
1da177e4 LT |
336 | } |
337 | ||
f1ddfd95 | 338 | static void __init mark_requested_irq(char irq) |
1da177e4 LT |
339 | { |
340 | rirqs[iindx++] = irq; | |
341 | } | |
342 | ||
f1ddfd95 | 343 | static int __exit clear_requested_irq(char irq) |
1da177e4 LT |
344 | { |
345 | int i; | |
f1ddfd95 | 346 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
1da177e4 LT |
347 | if (rirqs[i] == irq) { |
348 | rirqs[i] = 0; | |
349 | return 1; | |
350 | } | |
351 | } | |
352 | return 0; | |
353 | } | |
1da177e4 | 354 | |
f1ddfd95 | 355 | static int have_requested_irq(char irq) |
1da177e4 | 356 | { |
f1ddfd95 JS |
357 | /* array init to zeros so 0 irq will not be requested as a side |
358 | * effect */ | |
1da177e4 | 359 | int i; |
f1ddfd95 | 360 | for (i = 0; i < IP2_MAX_BOARDS; ++i) |
1da177e4 LT |
361 | if (rirqs[i] == irq) |
362 | return 1; | |
1da177e4 LT |
363 | return 0; |
364 | } | |
365 | ||
1da177e4 LT |
366 | /******************************************************************************/ |
367 | /* Function: cleanup_module() */ | |
368 | /* Parameters: None */ | |
369 | /* Returns: Nothing */ | |
370 | /* */ | |
371 | /* Description: */ | |
372 | /* This is a required entry point for an installable module. It has to return */ | |
373 | /* the device and the driver to a passive state. It should not be necessary */ | |
374 | /* to reset the board fully, especially as the loadware is downloaded */ | |
375 | /* externally rather than in the driver. We just want to disable the board */ | |
376 | /* and clear the loadware to a reset state. To allow this there has to be a */ | |
377 | /* way to detect whether the board has the loadware running at init time to */ | |
378 | /* handle subsequent installations of the driver. All memory allocated by the */ | |
379 | /* driver should be returned since it may be unloaded from memory. */ | |
380 | /******************************************************************************/ | |
7ccd7020 | 381 | static void __exit ip2_cleanup_module(void) |
1da177e4 LT |
382 | { |
383 | int err; | |
384 | int i; | |
385 | ||
9d020a2e | 386 | del_timer_sync(&PollTimer); |
1da177e4 LT |
387 | |
388 | /* Reset the boards we have. */ | |
f1ddfd95 JS |
389 | for (i = 0; i < IP2_MAX_BOARDS; i++) |
390 | if (i2BoardPtrTable[i]) | |
391 | iiReset(i2BoardPtrTable[i]); | |
1da177e4 LT |
392 | |
393 | /* The following is done at most once, if any boards were installed. */ | |
f1ddfd95 JS |
394 | for (i = 0; i < IP2_MAX_BOARDS; i++) { |
395 | if (i2BoardPtrTable[i]) { | |
396 | iiResetDelay(i2BoardPtrTable[i]); | |
1da177e4 | 397 | /* free io addresses and Tibet */ |
f1ddfd95 | 398 | release_region(ip2config.addr[i], 8); |
07c015e7 | 399 | device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); |
f1ddfd95 JS |
400 | device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, |
401 | 4 * i + 1)); | |
1da177e4 LT |
402 | } |
403 | /* Disable and remove interrupt handler. */ | |
f1ddfd95 JS |
404 | if (ip2config.irq[i] > 0 && |
405 | have_requested_irq(ip2config.irq[i])) { | |
406 | free_irq(ip2config.irq[i], (void *)&pcName); | |
407 | clear_requested_irq(ip2config.irq[i]); | |
1da177e4 LT |
408 | } |
409 | } | |
ca8eca68 | 410 | class_destroy(ip2_class); |
f1ddfd95 JS |
411 | err = tty_unregister_driver(ip2_tty_driver); |
412 | if (err) | |
413 | printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", | |
414 | err); | |
1da177e4 | 415 | put_tty_driver(ip2_tty_driver); |
68fc4fab | 416 | unregister_chrdev(IP2_IPL_MAJOR, pcIpl); |
c74c120a | 417 | remove_proc_entry("ip2mem", NULL); |
1da177e4 | 418 | |
f1ddfd95 | 419 | /* free memory */ |
1da177e4 LT |
420 | for (i = 0; i < IP2_MAX_BOARDS; i++) { |
421 | void *pB; | |
422 | #ifdef CONFIG_PCI | |
423 | if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) { | |
424 | pci_disable_device(ip2config.pci_dev[i]); | |
1aff0eca | 425 | pci_dev_put(ip2config.pci_dev[i]); |
1da177e4 LT |
426 | ip2config.pci_dev[i] = NULL; |
427 | } | |
428 | #endif | |
7ccd7020 JS |
429 | pB = i2BoardPtrTable[i]; |
430 | if (pB != NULL) { | |
f1ddfd95 | 431 | kfree(pB); |
1da177e4 LT |
432 | i2BoardPtrTable[i] = NULL; |
433 | } | |
f1ddfd95 JS |
434 | if (DevTableMem[i] != NULL) { |
435 | kfree(DevTableMem[i]); | |
1da177e4 LT |
436 | DevTableMem[i] = NULL; |
437 | } | |
438 | } | |
1da177e4 | 439 | } |
83e422b7 | 440 | module_exit(ip2_cleanup_module); |
1da177e4 | 441 | |
b68e31d0 | 442 | static const struct tty_operations ip2_ops = { |
1da177e4 LT |
443 | .open = ip2_open, |
444 | .close = ip2_close, | |
445 | .write = ip2_write, | |
446 | .put_char = ip2_putchar, | |
447 | .flush_chars = ip2_flush_chars, | |
448 | .write_room = ip2_write_room, | |
449 | .chars_in_buffer = ip2_chars_in_buf, | |
450 | .flush_buffer = ip2_flush_buffer, | |
451 | .ioctl = ip2_ioctl, | |
452 | .throttle = ip2_throttle, | |
453 | .unthrottle = ip2_unthrottle, | |
454 | .set_termios = ip2_set_termios, | |
455 | .set_ldisc = ip2_set_line_discipline, | |
456 | .stop = ip2_stop, | |
457 | .start = ip2_start, | |
458 | .hangup = ip2_hangup, | |
1da177e4 LT |
459 | .tiocmget = ip2_tiocmget, |
460 | .tiocmset = ip2_tiocmset, | |
0587102c | 461 | .get_icount = ip2_get_icount, |
cdda7cd9 | 462 | .proc_fops = &ip2_proc_fops, |
1da177e4 LT |
463 | }; |
464 | ||
465 | /******************************************************************************/ | |
466 | /* Function: ip2_loadmain() */ | |
467 | /* Parameters: irq, io from command line of insmod et. al. */ | |
468 | /* pointer to fip firmware and firmware size for boards */ | |
469 | /* Returns: Success (0) */ | |
470 | /* */ | |
471 | /* Description: */ | |
472 | /* This was the required entry point for all drivers (now in ip2.c) */ | |
473 | /* It performs all */ | |
474 | /* initialisation of the devices and driver structures, and registers itself */ | |
475 | /* with the relevant kernel modules. */ | |
476 | /******************************************************************************/ | |
0f2ed4c6 TG |
477 | /* IRQF_DISABLED - if set blocks all interrupts else only this line */ |
478 | /* IRQF_SHARED - for shared irq PCI or maybe EISA only */ | |
1da177e4 LT |
479 | /* SA_RANDOM - can be source for cert. random number generators */ |
480 | #define IP2_SA_FLAGS 0 | |
481 | ||
547d8bb7 DW |
482 | |
483 | static const struct firmware *ip2_request_firmware(void) | |
484 | { | |
485 | struct platform_device *pdev; | |
486 | const struct firmware *fw; | |
487 | ||
488 | pdev = platform_device_register_simple("ip2", 0, NULL, 0); | |
489 | if (IS_ERR(pdev)) { | |
490 | printk(KERN_ERR "Failed to register platform device for ip2\n"); | |
491 | return NULL; | |
492 | } | |
493 | if (request_firmware(&fw, "intelliport2.bin", &pdev->dev)) { | |
494 | printk(KERN_ERR "Failed to load firmware 'intelliport2.bin'\n"); | |
495 | fw = NULL; | |
496 | } | |
497 | platform_device_unregister(pdev); | |
498 | return fw; | |
499 | } | |
500 | ||
47babd4c JS |
501 | /****************************************************************************** |
502 | * ip2_setup: | |
503 | * str: kernel command line string | |
504 | * | |
505 | * Can't autoprobe the boards so user must specify configuration on | |
506 | * kernel command line. Sane people build it modular but the others | |
507 | * come here. | |
508 | * | |
509 | * Alternating pairs of io,irq for up to 4 boards. | |
510 | * ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3 | |
511 | * | |
512 | * io=0 => No board | |
513 | * io=1 => PCI | |
514 | * io=2 => EISA | |
515 | * else => ISA I/O address | |
516 | * | |
517 | * irq=0 or invalid for ISA will revert to polling mode | |
518 | * | |
519 | * Any value = -1, do not overwrite compiled in value. | |
520 | * | |
521 | ******************************************************************************/ | |
522 | static int __init ip2_setup(char *str) | |
523 | { | |
524 | int j, ints[10]; /* 4 boards, 2 parameters + 2 */ | |
525 | unsigned int i; | |
526 | ||
527 | str = get_options(str, ARRAY_SIZE(ints), ints); | |
528 | ||
529 | for (i = 0, j = 1; i < 4; i++) { | |
530 | if (j > ints[0]) | |
531 | break; | |
532 | if (ints[j] >= 0) | |
533 | io[i] = ints[j]; | |
534 | j++; | |
535 | if (j > ints[0]) | |
536 | break; | |
537 | if (ints[j] >= 0) | |
538 | irq[i] = ints[j]; | |
539 | j++; | |
540 | } | |
541 | return 1; | |
542 | } | |
543 | __setup("ip2=", ip2_setup); | |
47babd4c | 544 | |
f1ddfd95 | 545 | static int __init ip2_loadmain(void) |
1da177e4 LT |
546 | { |
547 | int i, j, box; | |
548 | int err = 0; | |
1da177e4 LT |
549 | i2eBordStrPtr pB = NULL; |
550 | int rc = -1; | |
547d8bb7 | 551 | const struct firmware *fw = NULL; |
02c95a62 RM |
552 | char *str; |
553 | ||
554 | str = cmd; | |
1da177e4 | 555 | |
47babd4c JS |
556 | if (poll_only) { |
557 | /* Hard lock the interrupts to zero */ | |
558 | irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0; | |
559 | } | |
560 | ||
02c95a62 RM |
561 | /* Check module parameter with 'ip2=' has been passed or not */ |
562 | if (!poll_only && (!strncmp(str, "ip2=", 4))) | |
563 | ip2_setup(str); | |
564 | ||
f1ddfd95 | 565 | ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0); |
1da177e4 LT |
566 | |
567 | /* process command line arguments to modprobe or | |
568 | insmod i.e. iop & irqp */ | |
569 | /* irqp and iop should ALWAYS be specified now... But we check | |
570 | them individually just to be sure, anyways... */ | |
f1ddfd95 | 571 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
47babd4c JS |
572 | ip2config.addr[i] = io[i]; |
573 | if (irq[i] >= 0) | |
574 | ip2config.irq[i] = irq[i]; | |
575 | else | |
576 | ip2config.irq[i] = 0; | |
f1ddfd95 JS |
577 | /* This is a little bit of a hack. If poll_only=1 on command |
578 | line back in ip2.c OR all IRQs on all specified boards are | |
579 | explicitly set to 0, then drop to poll only mode and override | |
580 | PCI or EISA interrupts. This superceeds the old hack of | |
581 | triggering if all interrupts were zero (like da default). | |
582 | Still a hack but less prone to random acts of terrorism. | |
583 | ||
584 | What we really should do, now that the IRQ default is set | |
585 | to -1, is to use 0 as a hard coded, do not probe. | |
586 | ||
587 | /\/\|=mhw=|\/\/ | |
588 | */ | |
47babd4c | 589 | poll_only |= irq[i]; |
1da177e4 LT |
590 | } |
591 | poll_only = !poll_only; | |
592 | ||
1da177e4 | 593 | /* Announce our presence */ |
f1ddfd95 | 594 | printk(KERN_INFO "%s version %s\n", pcName, pcVersion); |
1da177e4 LT |
595 | |
596 | ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); | |
597 | if (!ip2_tty_driver) | |
598 | return -ENOMEM; | |
599 | ||
1da177e4 | 600 | /* Initialise all the boards we can find (up to the maximum). */ |
f1ddfd95 JS |
601 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
602 | switch (ip2config.addr[i]) { | |
1da177e4 LT |
603 | case 0: /* skip this slot even if card is present */ |
604 | break; | |
605 | default: /* ISA */ | |
606 | /* ISA address must be specified */ | |
f1ddfd95 JS |
607 | if (ip2config.addr[i] < 0x100 || |
608 | ip2config.addr[i] > 0x3f8) { | |
609 | printk(KERN_ERR "IP2: Bad ISA board %d " | |
610 | "address %x\n", i, | |
611 | ip2config.addr[i]); | |
1da177e4 | 612 | ip2config.addr[i] = 0; |
f1ddfd95 JS |
613 | break; |
614 | } | |
615 | ip2config.type[i] = ISA; | |
616 | ||
617 | /* Check for valid irq argument, set for polling if | |
618 | * invalid */ | |
619 | if (ip2config.irq[i] && | |
620 | !is_valid_irq(ip2config.irq[i])) { | |
621 | printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n", | |
622 | ip2config.irq[i]); | |
623 | /* 0 is polling and is valid in that sense */ | |
624 | ip2config.irq[i] = 0; | |
1da177e4 LT |
625 | } |
626 | break; | |
627 | case PCI: | |
628 | #ifdef CONFIG_PCI | |
f1ddfd95 | 629 | { |
795877cf | 630 | struct pci_dev *pdev = NULL; |
f1ddfd95 JS |
631 | u32 addr; |
632 | int status; | |
633 | ||
634 | pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE, | |
635 | PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev); | |
636 | if (pdev == NULL) { | |
637 | ip2config.addr[i] = 0; | |
638 | printk(KERN_ERR "IP2: PCI board %d not " | |
639 | "found\n", i); | |
640 | break; | |
1da177e4 | 641 | } |
f1ddfd95 JS |
642 | |
643 | if (pci_enable_device(pdev)) { | |
644 | dev_err(&pdev->dev, "can't enable device\n"); | |
795877cf | 645 | goto out; |
f1ddfd95 JS |
646 | } |
647 | ip2config.type[i] = PCI; | |
648 | ip2config.pci_dev[i] = pci_dev_get(pdev); | |
649 | status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1, | |
650 | &addr); | |
651 | if (addr & 1) | |
652 | ip2config.addr[i] = (USHORT)(addr & 0xfffe); | |
653 | else | |
654 | dev_err(&pdev->dev, "I/O address error\n"); | |
655 | ||
656 | ip2config.irq[i] = pdev->irq; | |
795877cf RM |
657 | out: |
658 | pci_dev_put(pdev); | |
f1ddfd95 | 659 | } |
1da177e4 | 660 | #else |
f1ddfd95 JS |
661 | printk(KERN_ERR "IP2: PCI card specified but PCI " |
662 | "support not enabled.\n"); | |
663 | printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI " | |
664 | "defined!\n"); | |
1da177e4 LT |
665 | #endif /* CONFIG_PCI */ |
666 | break; | |
667 | case EISA: | |
f1ddfd95 JS |
668 | ip2config.addr[i] = find_eisa_board(Eisa_slot + 1); |
669 | if (ip2config.addr[i] != 0) { | |
1da177e4 LT |
670 | /* Eisa_irq set as side effect, boo */ |
671 | ip2config.type[i] = EISA; | |
672 | } | |
673 | ip2config.irq[i] = Eisa_irq; | |
674 | break; | |
675 | } /* switch */ | |
676 | } /* for */ | |
1aff0eca | 677 | |
f1ddfd95 JS |
678 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
679 | if (ip2config.addr[i]) { | |
978550b8 MK |
680 | pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL); |
681 | if (pB) { | |
1da177e4 | 682 | i2BoardPtrTable[i] = pB; |
f1ddfd95 JS |
683 | iiSetAddress(pB, ip2config.addr[i], |
684 | ii2DelayTimer); | |
685 | iiReset(pB); | |
686 | } else | |
687 | printk(KERN_ERR "IP2: board memory allocation " | |
688 | "error\n"); | |
1da177e4 LT |
689 | } |
690 | } | |
f1ddfd95 JS |
691 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
692 | pB = i2BoardPtrTable[i]; | |
693 | if (pB != NULL) { | |
694 | iiResetDelay(pB); | |
1da177e4 LT |
695 | break; |
696 | } | |
697 | } | |
f1ddfd95 | 698 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
547d8bb7 DW |
699 | /* We don't want to request the firmware unless we have at |
700 | least one board */ | |
f1ddfd95 | 701 | if (i2BoardPtrTable[i] != NULL) { |
547d8bb7 DW |
702 | if (!fw) |
703 | fw = ip2_request_firmware(); | |
704 | if (!fw) | |
705 | break; | |
706 | ip2_init_board(i, fw); | |
1da177e4 LT |
707 | } |
708 | } | |
547d8bb7 DW |
709 | if (fw) |
710 | release_firmware(fw); | |
1da177e4 | 711 | |
f1ddfd95 | 712 | ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0); |
1da177e4 LT |
713 | |
714 | ip2_tty_driver->owner = THIS_MODULE; | |
715 | ip2_tty_driver->name = "ttyF"; | |
1da177e4 LT |
716 | ip2_tty_driver->driver_name = pcDriver_name; |
717 | ip2_tty_driver->major = IP2_TTY_MAJOR; | |
718 | ip2_tty_driver->minor_start = 0; | |
719 | ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
720 | ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; | |
721 | ip2_tty_driver->init_termios = tty_std_termios; | |
722 | ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; | |
f1ddfd95 JS |
723 | ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | |
724 | TTY_DRIVER_DYNAMIC_DEV; | |
1da177e4 LT |
725 | tty_set_operations(ip2_tty_driver, &ip2_ops); |
726 | ||
f1ddfd95 | 727 | ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0); |
1da177e4 | 728 | |
f1ddfd95 JS |
729 | err = tty_register_driver(ip2_tty_driver); |
730 | if (err) { | |
731 | printk(KERN_ERR "IP2: failed to register tty driver\n"); | |
1da177e4 | 732 | put_tty_driver(ip2_tty_driver); |
f1ddfd95 JS |
733 | return err; /* leaking resources */ |
734 | } | |
735 | ||
736 | err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl); | |
737 | if (err) { | |
738 | printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", | |
739 | err); | |
1da177e4 LT |
740 | } else { |
741 | /* create the sysfs class */ | |
ca8eca68 | 742 | ip2_class = class_create(THIS_MODULE, "ip2"); |
1da177e4 LT |
743 | if (IS_ERR(ip2_class)) { |
744 | err = PTR_ERR(ip2_class); | |
745 | goto out_chrdev; | |
746 | } | |
747 | } | |
748 | /* Register the read_procmem thing */ | |
4a5cdb5b | 749 | if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) { |
1da177e4 | 750 | printk(KERN_ERR "IP2: failed to register read_procmem\n"); |
f1ddfd95 JS |
751 | return -EIO; /* leaking resources */ |
752 | } | |
1da177e4 | 753 | |
f1ddfd95 JS |
754 | ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0); |
755 | /* Register the interrupt handler or poll handler, depending upon the | |
756 | * specified interrupt. | |
757 | */ | |
1da177e4 | 758 | |
f1ddfd95 JS |
759 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { |
760 | if (ip2config.addr[i] == 0) | |
761 | continue; | |
1da177e4 | 762 | |
f1ddfd95 JS |
763 | pB = i2BoardPtrTable[i]; |
764 | if (pB != NULL) { | |
03457cd4 GKH |
765 | device_create(ip2_class, NULL, |
766 | MKDEV(IP2_IPL_MAJOR, 4 * i), | |
767 | NULL, "ipl%d", i); | |
768 | device_create(ip2_class, NULL, | |
769 | MKDEV(IP2_IPL_MAJOR, 4 * i + 1), | |
770 | NULL, "stat%d", i); | |
f1ddfd95 JS |
771 | |
772 | for (box = 0; box < ABS_MAX_BOXES; box++) | |
773 | for (j = 0; j < ABS_BIGGEST_BOX; j++) | |
774 | if (pB->i2eChannelMap[box] & (1 << j)) | |
775 | tty_register_device( | |
776 | ip2_tty_driver, | |
777 | j + ABS_BIGGEST_BOX * | |
778 | (box+i*ABS_MAX_BOXES), | |
779 | NULL); | |
780 | } | |
1da177e4 | 781 | |
f1ddfd95 JS |
782 | if (poll_only) { |
783 | /* Poll only forces driver to only use polling and | |
784 | to ignore the probed PCI or EISA interrupts. */ | |
785 | ip2config.irq[i] = CIR_POLL; | |
786 | } | |
787 | if (ip2config.irq[i] == CIR_POLL) { | |
1da177e4 | 788 | retry: |
9d020a2e AM |
789 | if (!timer_pending(&PollTimer)) { |
790 | mod_timer(&PollTimer, POLL_TIMEOUT); | |
f1ddfd95 | 791 | printk(KERN_INFO "IP2: polling\n"); |
1da177e4 | 792 | } |
f1ddfd95 JS |
793 | } else { |
794 | if (have_requested_irq(ip2config.irq[i])) | |
795 | continue; | |
796 | rc = request_irq(ip2config.irq[i], ip2_interrupt, | |
797 | IP2_SA_FLAGS | | |
798 | (ip2config.type[i] == PCI ? IRQF_SHARED : 0), | |
799 | pcName, i2BoardPtrTable[i]); | |
800 | if (rc) { | |
801 | printk(KERN_ERR "IP2: request_irq failed: " | |
802 | "error %d\n", rc); | |
803 | ip2config.irq[i] = CIR_POLL; | |
804 | printk(KERN_INFO "IP2: Polling %ld/sec.\n", | |
805 | (POLL_TIMEOUT - jiffies)); | |
806 | goto retry; | |
1da177e4 | 807 | } |
f1ddfd95 JS |
808 | mark_requested_irq(ip2config.irq[i]); |
809 | /* Initialise the interrupt handler bottom half | |
810 | * (aka slih). */ | |
1da177e4 LT |
811 | } |
812 | } | |
f1ddfd95 JS |
813 | |
814 | for (i = 0; i < IP2_MAX_BOARDS; ++i) { | |
815 | if (i2BoardPtrTable[i]) { | |
816 | /* set and enable board interrupt */ | |
817 | set_irq(i, ip2config.irq[i]); | |
818 | } | |
819 | } | |
820 | ||
821 | ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0); | |
822 | ||
823 | return 0; | |
1da177e4 | 824 | |
1da177e4 LT |
825 | out_chrdev: |
826 | unregister_chrdev(IP2_IPL_MAJOR, "ip2"); | |
f1ddfd95 | 827 | /* unregister and put tty here */ |
1da177e4 LT |
828 | return err; |
829 | } | |
47babd4c | 830 | module_init(ip2_loadmain); |
1da177e4 | 831 | |
1da177e4 LT |
832 | /******************************************************************************/ |
833 | /* Function: ip2_init_board() */ | |
834 | /* Parameters: Index of board in configuration structure */ | |
835 | /* Returns: Success (0) */ | |
836 | /* */ | |
837 | /* Description: */ | |
838 | /* This function initializes the specified board. The loadware is copied to */ | |
839 | /* the board, the channel structures are initialized, and the board details */ | |
840 | /* are reported on the console. */ | |
841 | /******************************************************************************/ | |
673e321c | 842 | static void |
547d8bb7 | 843 | ip2_init_board(int boardnum, const struct firmware *fw) |
1da177e4 LT |
844 | { |
845 | int i; | |
846 | int nports = 0, nboxes = 0; | |
847 | i2ChanStrPtr pCh; | |
848 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; | |
849 | ||
850 | if ( !iiInitialize ( pB ) ) { | |
851 | printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", | |
852 | pB->i2eBase, pB->i2eError ); | |
853 | goto err_initialize; | |
854 | } | |
855 | printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1, | |
856 | ip2config.addr[boardnum], ip2config.irq[boardnum] ); | |
857 | ||
858 | if (!request_region( ip2config.addr[boardnum], 8, pcName )) { | |
859 | printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]); | |
860 | goto err_initialize; | |
861 | } | |
862 | ||
547d8bb7 | 863 | if ( iiDownloadAll ( pB, (loadHdrStrPtr)fw->data, 1, fw->size ) |
1da177e4 LT |
864 | != II_DOWN_GOOD ) { |
865 | printk ( KERN_ERR "IP2: failed to download loadware\n" ); | |
866 | goto err_release_region; | |
867 | } else { | |
868 | printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n", | |
869 | pB->i2ePom.e.porVersion, | |
870 | pB->i2ePom.e.porRevision, | |
871 | pB->i2ePom.e.porSubRev, pB->i2eLVersion, | |
872 | pB->i2eLRevision, pB->i2eLSub ); | |
873 | } | |
874 | ||
875 | switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { | |
876 | ||
877 | default: | |
878 | printk( KERN_ERR "IP2: Unknown board type, ID = %x\n", | |
879 | pB->i2ePom.e.porID ); | |
880 | nports = 0; | |
881 | goto err_release_region; | |
882 | break; | |
883 | ||
884 | case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ | |
885 | printk ( KERN_INFO "IP2: ISA-4\n" ); | |
886 | nports = 4; | |
887 | break; | |
888 | ||
889 | case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ | |
890 | printk ( KERN_INFO "IP2: ISA-8 std\n" ); | |
891 | nports = 8; | |
892 | break; | |
893 | ||
894 | case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ | |
895 | printk ( KERN_INFO "IP2: ISA-8 RJ11\n" ); | |
896 | nports = 8; | |
897 | break; | |
898 | ||
899 | case POR_ID_FIIEX: /* IntelliPort IIEX */ | |
900 | { | |
901 | int portnum = IP2_PORTS_PER_BOARD * boardnum; | |
902 | int box; | |
903 | ||
904 | for( box = 0; box < ABS_MAX_BOXES; ++box ) { | |
905 | if ( pB->i2eChannelMap[box] != 0 ) { | |
906 | ++nboxes; | |
907 | } | |
908 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { | |
909 | if ( pB->i2eChannelMap[box] & 1<< i ) { | |
910 | ++nports; | |
911 | } | |
912 | } | |
913 | } | |
914 | DevTableMem[boardnum] = pCh = | |
915 | kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); | |
916 | if ( !pCh ) { | |
917 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); | |
918 | goto err_release_region; | |
919 | } | |
920 | if ( !i2InitChannels( pB, nports, pCh ) ) { | |
921 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); | |
922 | kfree ( pCh ); | |
923 | goto err_release_region; | |
924 | } | |
925 | pB->i2eChannelPtr = &DevTable[portnum]; | |
926 | pB->i2eChannelCnt = ABS_MOST_PORTS; | |
927 | ||
928 | for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { | |
929 | for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { | |
930 | if ( pB->i2eChannelMap[box] & (1 << i) ) { | |
931 | DevTable[portnum + i] = pCh; | |
932 | pCh->port_index = portnum + i; | |
933 | pCh++; | |
934 | } | |
935 | } | |
936 | } | |
937 | printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n", | |
938 | nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); | |
939 | } | |
940 | goto ex_exit; | |
941 | } | |
942 | DevTableMem[boardnum] = pCh = | |
943 | kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); | |
944 | if ( !pCh ) { | |
945 | printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); | |
946 | goto err_release_region; | |
947 | } | |
948 | pB->i2eChannelPtr = pCh; | |
949 | pB->i2eChannelCnt = nports; | |
950 | if ( !i2InitChannels( pB, nports, pCh ) ) { | |
951 | printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); | |
952 | kfree ( pCh ); | |
953 | goto err_release_region; | |
954 | } | |
955 | pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; | |
956 | ||
957 | for( i = 0; i < pB->i2eChannelCnt; ++i ) { | |
958 | DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; | |
959 | pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; | |
960 | pCh++; | |
961 | } | |
962 | ex_exit: | |
c4028958 | 963 | INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh); |
1da177e4 LT |
964 | return; |
965 | ||
966 | err_release_region: | |
967 | release_region(ip2config.addr[boardnum], 8); | |
968 | err_initialize: | |
969 | kfree ( pB ); | |
970 | i2BoardPtrTable[boardnum] = NULL; | |
971 | return; | |
972 | } | |
973 | ||
974 | /******************************************************************************/ | |
975 | /* Function: find_eisa_board ( int start_slot ) */ | |
976 | /* Parameters: First slot to check */ | |
977 | /* Returns: Address of EISA IntelliPort II controller */ | |
978 | /* */ | |
979 | /* Description: */ | |
980 | /* This function searches for an EISA IntelliPort controller, starting */ | |
981 | /* from the specified slot number. If the motherboard is not identified as an */ | |
982 | /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ | |
983 | /* it returns the base address of the controller. */ | |
984 | /******************************************************************************/ | |
673e321c | 985 | static unsigned short |
1da177e4 LT |
986 | find_eisa_board( int start_slot ) |
987 | { | |
988 | int i, j; | |
989 | unsigned int idm = 0; | |
990 | unsigned int idp = 0; | |
991 | unsigned int base = 0; | |
992 | unsigned int value; | |
993 | int setup_address; | |
994 | int setup_irq; | |
995 | int ismine = 0; | |
996 | ||
997 | /* | |
998 | * First a check for an EISA motherboard, which we do by comparing the | |
999 | * EISA ID registers for the system board and the first couple of slots. | |
1000 | * No slot ID should match the system board ID, but on an ISA or PCI | |
1001 | * machine the odds are that an empty bus will return similar values for | |
1002 | * each slot. | |
1003 | */ | |
1004 | i = 0x0c80; | |
1005 | value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); | |
1006 | for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { | |
1007 | j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); | |
1008 | if ( value == j ) | |
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | /* | |
1013 | * OK, so we are inclined to believe that this is an EISA machine. Find | |
1014 | * an IntelliPort controller. | |
1015 | */ | |
1016 | for( i = start_slot; i < 16; i++ ) { | |
1017 | base = i << 12; | |
1018 | idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); | |
1019 | idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); | |
1020 | ismine = 0; | |
1021 | if ( idm == 0x0e8e ) { | |
1022 | if ( idp == 0x0281 || idp == 0x0218 ) { | |
1023 | ismine = 1; | |
1024 | } else if ( idp == 0x0282 || idp == 0x0283 ) { | |
1025 | ismine = 3; /* Can do edge-trigger */ | |
1026 | } | |
1027 | if ( ismine ) { | |
1028 | Eisa_slot = i; | |
1029 | break; | |
1030 | } | |
1031 | } | |
1032 | } | |
1033 | if ( !ismine ) | |
1034 | return 0; | |
1035 | ||
1036 | /* It's some sort of EISA card, but at what address is it configured? */ | |
1037 | ||
1038 | setup_address = base + 0xc88; | |
1039 | value = inb(base + 0xc86); | |
1040 | setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; | |
1041 | ||
1042 | if ( (ismine & 2) && !(value & 0x10) ) { | |
1043 | ismine = 1; /* Could be edging, but not */ | |
1044 | } | |
1045 | ||
1046 | if ( Eisa_irq == 0 ) { | |
1047 | Eisa_irq = setup_irq; | |
1048 | } else if ( Eisa_irq != setup_irq ) { | |
1049 | printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); | |
1050 | } | |
1051 | ||
1052 | #ifdef IP2DEBUG_INIT | |
1053 | printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", | |
1054 | base >> 12, idm, idp, setup_address); | |
1055 | if ( Eisa_irq ) { | |
1056 | printk(KERN_DEBUG ", Interrupt %d %s\n", | |
1057 | setup_irq, (ismine & 2) ? "(edge)" : "(level)"); | |
1058 | } else { | |
1059 | printk(KERN_DEBUG ", (polled)\n"); | |
1060 | } | |
1061 | #endif | |
1062 | return setup_address; | |
1063 | } | |
1064 | ||
1065 | /******************************************************************************/ | |
1066 | /* Function: set_irq() */ | |
1067 | /* Parameters: index to board in board table */ | |
1068 | /* IRQ to use */ | |
1069 | /* Returns: Success (0) */ | |
1070 | /* */ | |
1071 | /* Description: */ | |
1072 | /******************************************************************************/ | |
1073 | static void | |
1074 | set_irq( int boardnum, int boardIrq ) | |
1075 | { | |
1076 | unsigned char tempCommand[16]; | |
1077 | i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; | |
1078 | unsigned long flags; | |
1079 | ||
1080 | /* | |
1081 | * Notify the boards they may generate interrupts. This is done by | |
1082 | * sending an in-line command to channel 0 on each board. This is why | |
1083 | * the channels have to be defined already. For each board, if the | |
1084 | * interrupt has never been defined, we must do so NOW, directly, since | |
1085 | * board will not send flow control or even give an interrupt until this | |
1086 | * is done. If polling we must send 0 as the interrupt parameter. | |
1087 | */ | |
1088 | ||
1089 | // We will get an interrupt here at the end of this function | |
1090 | ||
1091 | iiDisableMailIrq(pB); | |
1092 | ||
1093 | /* We build up the entire packet header. */ | |
1094 | CHANNEL_OF(tempCommand) = 0; | |
1095 | PTYPE_OF(tempCommand) = PTYPE_INLINE; | |
1096 | CMD_COUNT_OF(tempCommand) = 2; | |
1097 | (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; | |
1098 | (CMD_OF(tempCommand))[1] = boardIrq; | |
1099 | /* | |
1100 | * Write to FIFO; don't bother to adjust fifo capacity for this, since | |
1101 | * board will respond almost immediately after SendMail hit. | |
1102 | */ | |
cf1c63c3 | 1103 | write_lock_irqsave(&pB->write_fifo_spinlock, flags); |
1da177e4 | 1104 | iiWriteBuf(pB, tempCommand, 4); |
cf1c63c3 | 1105 | write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); |
1da177e4 LT |
1106 | pB->i2eUsingIrq = boardIrq; |
1107 | pB->i2eOutMailWaiting |= MB_OUT_STUFFED; | |
1108 | ||
1109 | /* Need to update number of boards before you enable mailbox int */ | |
1110 | ++i2nBoards; | |
1111 | ||
1112 | CHANNEL_OF(tempCommand) = 0; | |
1113 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1114 | CMD_COUNT_OF(tempCommand) = 6; | |
1115 | (CMD_OF(tempCommand))[0] = 88; // SILO | |
1116 | (CMD_OF(tempCommand))[1] = 64; // chars | |
1117 | (CMD_OF(tempCommand))[2] = 32; // ms | |
1118 | ||
1119 | (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK | |
1120 | (CMD_OF(tempCommand))[4] = 64; // chars | |
1121 | ||
1122 | (CMD_OF(tempCommand))[5] = 87; // HW_TEST | |
cf1c63c3 | 1123 | write_lock_irqsave(&pB->write_fifo_spinlock, flags); |
1da177e4 | 1124 | iiWriteBuf(pB, tempCommand, 8); |
cf1c63c3 | 1125 | write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); |
1da177e4 LT |
1126 | |
1127 | CHANNEL_OF(tempCommand) = 0; | |
1128 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1129 | CMD_COUNT_OF(tempCommand) = 1; | |
1130 | (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ | |
1131 | iiWriteBuf(pB, tempCommand, 3); | |
1132 | ||
1133 | #ifdef XXX | |
1134 | // enable heartbeat for test porpoises | |
1135 | CHANNEL_OF(tempCommand) = 0; | |
1136 | PTYPE_OF(tempCommand) = PTYPE_BYPASS; | |
1137 | CMD_COUNT_OF(tempCommand) = 2; | |
1138 | (CMD_OF(tempCommand))[0] = 44; /* get ping */ | |
1139 | (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ | |
cf1c63c3 | 1140 | write_lock_irqsave(&pB->write_fifo_spinlock, flags); |
1da177e4 | 1141 | iiWriteBuf(pB, tempCommand, 4); |
cf1c63c3 | 1142 | write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); |
1da177e4 LT |
1143 | #endif |
1144 | ||
1145 | iiEnableMailIrq(pB); | |
1146 | iiSendPendingMail(pB); | |
1147 | } | |
1148 | ||
1149 | /******************************************************************************/ | |
1150 | /* Interrupt Handler Section */ | |
1151 | /******************************************************************************/ | |
1152 | ||
1153 | static inline void | |
1154 | service_all_boards(void) | |
1155 | { | |
1156 | int i; | |
1157 | i2eBordStrPtr pB; | |
1158 | ||
1159 | /* Service every board on the list */ | |
1160 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
1161 | pB = i2BoardPtrTable[i]; | |
1162 | if ( pB ) { | |
1163 | i2ServiceBoard( pB ); | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | ||
1169 | /******************************************************************************/ | |
c4028958 DH |
1170 | /* Function: ip2_interrupt_bh(work) */ |
1171 | /* Parameters: work - pointer to the board structure */ | |
1da177e4 LT |
1172 | /* Returns: Nothing */ |
1173 | /* */ | |
1174 | /* Description: */ | |
1175 | /* Service the board in a bottom half interrupt handler and then */ | |
1176 | /* reenable the board's interrupts if it has an IRQ number */ | |
1177 | /* */ | |
1178 | /******************************************************************************/ | |
1179 | static void | |
c4028958 | 1180 | ip2_interrupt_bh(struct work_struct *work) |
1da177e4 | 1181 | { |
c4028958 | 1182 | i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt); |
1da177e4 LT |
1183 | // pB better well be set or we have a problem! We can only get |
1184 | // here from the IMMEDIATE queue. Here, we process the boards. | |
1185 | // Checking pB doesn't cost much and it saves us from the sanity checkers. | |
1186 | ||
1187 | bh_counter++; | |
1188 | ||
1189 | if ( pB ) { | |
1190 | i2ServiceBoard( pB ); | |
1191 | if( pB->i2eUsingIrq ) { | |
1192 | // Re-enable his interrupts | |
1193 | iiEnableMailIrq(pB); | |
1194 | } | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | ||
1199 | /******************************************************************************/ | |
7d12e780 | 1200 | /* Function: ip2_interrupt(int irq, void *dev_id) */ |
1da177e4 LT |
1201 | /* Parameters: irq - interrupt number */ |
1202 | /* pointer to optional device ID structure */ | |
1da177e4 LT |
1203 | /* Returns: Nothing */ |
1204 | /* */ | |
1205 | /* Description: */ | |
1206 | /* */ | |
1207 | /* Our task here is simply to identify each board which needs servicing. */ | |
1208 | /* If we are queuing then, queue it to be serviced, and disable its irq */ | |
1209 | /* mask otherwise process the board directly. */ | |
1210 | /* */ | |
1211 | /* We could queue by IRQ but that just complicates things on both ends */ | |
1212 | /* with very little gain in performance (how many instructions does */ | |
1213 | /* it take to iterate on the immediate queue). */ | |
1214 | /* */ | |
1215 | /* */ | |
1216 | /******************************************************************************/ | |
f3518e4e JG |
1217 | static void |
1218 | ip2_irq_work(i2eBordStrPtr pB) | |
1219 | { | |
1220 | #ifdef USE_IQI | |
1221 | if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) { | |
1222 | // Disable his interrupt (will be enabled when serviced) | |
1223 | // This is mostly to protect from reentrancy. | |
1224 | iiDisableMailIrq(pB); | |
1225 | ||
1226 | // Park the board on the immediate queue for processing. | |
1227 | schedule_work(&pB->tqueue_interrupt); | |
1228 | ||
1229 | // Make sure the immediate queue is flagged to fire. | |
1230 | } | |
1231 | #else | |
1232 | ||
1233 | // We are using immediate servicing here. This sucks and can | |
1234 | // cause all sorts of havoc with ppp and others. The failsafe | |
1235 | // check on iiSendPendingMail could also throw a hairball. | |
1236 | ||
1237 | i2ServiceBoard( pB ); | |
1238 | ||
1239 | #endif /* USE_IQI */ | |
1240 | } | |
1241 | ||
6bd3bd67 JG |
1242 | static void |
1243 | ip2_polled_interrupt(void) | |
1da177e4 LT |
1244 | { |
1245 | int i; | |
1246 | i2eBordStrPtr pB; | |
1da177e4 | 1247 | |
7ccd7020 | 1248 | ip2trace(ITRC_NO_PORT, ITRC_INTR, 99, 1, 0); |
1da177e4 LT |
1249 | |
1250 | /* Service just the boards on the list using this irq */ | |
1251 | for( i = 0; i < i2nBoards; ++i ) { | |
1252 | pB = i2BoardPtrTable[i]; | |
1253 | ||
1254 | // Only process those boards which match our IRQ. | |
1255 | // IRQ = 0 for polled boards, we won't poll "IRQ" boards | |
1256 | ||
7ccd7020 | 1257 | if (pB && pB->i2eUsingIrq == 0) |
f3518e4e | 1258 | ip2_irq_work(pB); |
1da177e4 LT |
1259 | } |
1260 | ||
1261 | ++irq_counter; | |
1262 | ||
1263 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
6bd3bd67 JG |
1264 | } |
1265 | ||
1266 | static irqreturn_t | |
1267 | ip2_interrupt(int irq, void *dev_id) | |
1268 | { | |
1269 | i2eBordStrPtr pB = dev_id; | |
1270 | ||
1271 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq ); | |
1272 | ||
1273 | ip2_irq_work(pB); | |
1274 | ||
1275 | ++irq_counter; | |
1276 | ||
1277 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
1278 | return IRQ_HANDLED; | |
1da177e4 LT |
1279 | } |
1280 | ||
1281 | /******************************************************************************/ | |
1282 | /* Function: ip2_poll(unsigned long arg) */ | |
1283 | /* Parameters: ? */ | |
1284 | /* Returns: Nothing */ | |
1285 | /* */ | |
1286 | /* Description: */ | |
1287 | /* This function calls the library routine i2ServiceBoard for each board in */ | |
1288 | /* the board table. This is used instead of the interrupt routine when polled */ | |
1289 | /* mode is specified. */ | |
1290 | /******************************************************************************/ | |
1291 | static void | |
1292 | ip2_poll(unsigned long arg) | |
1293 | { | |
1294 | ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); | |
1295 | ||
1da177e4 LT |
1296 | // Just polled boards, IRQ = 0 will hit all non-interrupt boards. |
1297 | // It will NOT poll boards handled by hard interrupts. | |
8dfba4d7 | 1298 | // The issue of queued BH interrupts is handled in ip2_interrupt(). |
6bd3bd67 | 1299 | ip2_polled_interrupt(); |
1da177e4 | 1300 | |
9d020a2e | 1301 | mod_timer(&PollTimer, POLL_TIMEOUT); |
1da177e4 LT |
1302 | |
1303 | ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); | |
1304 | } | |
1305 | ||
c4028958 | 1306 | static void do_input(struct work_struct *work) |
1da177e4 | 1307 | { |
c4028958 | 1308 | i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input); |
1da177e4 LT |
1309 | unsigned long flags; |
1310 | ||
1311 | ip2trace(CHANN, ITRC_INPUT, 21, 0 ); | |
1312 | ||
1313 | // Data input | |
1314 | if ( pCh->pTTY != NULL ) { | |
cf1c63c3 | 1315 | read_lock_irqsave(&pCh->Ibuf_spinlock, flags); |
1da177e4 | 1316 | if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { |
cf1c63c3 | 1317 | read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); |
1da177e4 LT |
1318 | i2Input( pCh ); |
1319 | } else | |
cf1c63c3 | 1320 | read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); |
1da177e4 LT |
1321 | } else { |
1322 | ip2trace(CHANN, ITRC_INPUT, 22, 0 ); | |
1323 | ||
1324 | i2InputFlush( pCh ); | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | // code duplicated from n_tty (ldisc) | |
1329 | static inline void isig(int sig, struct tty_struct *tty, int flush) | |
1330 | { | |
a352def2 | 1331 | /* FIXME: This is completely bogus */ |
ab521dc0 EB |
1332 | if (tty->pgrp) |
1333 | kill_pgrp(tty->pgrp, sig, 1); | |
1da177e4 | 1334 | if (flush || !L_NOFLSH(tty)) { |
c65c9bc3 AC |
1335 | if ( tty->ldisc->ops->flush_buffer ) |
1336 | tty->ldisc->ops->flush_buffer(tty); | |
1da177e4 LT |
1337 | i2InputFlush( tty->driver_data ); |
1338 | } | |
1339 | } | |
1340 | ||
c4028958 | 1341 | static void do_status(struct work_struct *work) |
1da177e4 | 1342 | { |
c4028958 | 1343 | i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status); |
1da177e4 LT |
1344 | int status; |
1345 | ||
1346 | status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); | |
1347 | ||
1348 | ip2trace (CHANN, ITRC_STATUS, 21, 1, status ); | |
1349 | ||
1350 | if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { | |
1351 | if ( (status & I2_BRK) ) { | |
1352 | // code duplicated from n_tty (ldisc) | |
1353 | if (I_IGNBRK(pCh->pTTY)) | |
1354 | goto skip_this; | |
1355 | if (I_BRKINT(pCh->pTTY)) { | |
1356 | isig(SIGINT, pCh->pTTY, 1); | |
1357 | goto skip_this; | |
1358 | } | |
1359 | wake_up_interruptible(&pCh->pTTY->read_wait); | |
1360 | } | |
1361 | #ifdef NEVER_HAPPENS_AS_SETUP_XXX | |
1362 | // and can't work because we don't know the_char | |
1363 | // as the_char is reported on a separate path | |
1364 | // The intelligent board does this stuff as setup | |
1365 | { | |
1366 | char brkf = TTY_NORMAL; | |
1367 | unsigned char brkc = '\0'; | |
1368 | unsigned char tmp; | |
1369 | if ( (status & I2_BRK) ) { | |
1370 | brkf = TTY_BREAK; | |
1371 | brkc = '\0'; | |
1372 | } | |
1373 | else if (status & I2_PAR) { | |
1374 | brkf = TTY_PARITY; | |
1375 | brkc = the_char; | |
1376 | } else if (status & I2_FRA) { | |
1377 | brkf = TTY_FRAME; | |
1378 | brkc = the_char; | |
1379 | } else if (status & I2_OVR) { | |
1380 | brkf = TTY_OVERRUN; | |
1381 | brkc = the_char; | |
1382 | } | |
1383 | tmp = pCh->pTTY->real_raw; | |
1384 | pCh->pTTY->real_raw = 0; | |
a352def2 | 1385 | pCh->pTTY->ldisc->ops.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); |
1da177e4 LT |
1386 | pCh->pTTY->real_raw = tmp; |
1387 | } | |
1388 | #endif /* NEVER_HAPPENS_AS_SETUP_XXX */ | |
1389 | } | |
1390 | skip_this: | |
1391 | ||
1392 | if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { | |
1393 | wake_up_interruptible(&pCh->delta_msr_wait); | |
1394 | ||
1395 | if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { | |
1396 | if ( status & I2_DCD ) { | |
1397 | if ( pCh->wopen ) { | |
1398 | wake_up_interruptible ( &pCh->open_wait ); | |
1399 | } | |
1400 | } else { | |
1401 | if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { | |
1402 | tty_hangup( pCh->pTTY ); | |
1403 | } | |
1404 | } | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | ip2trace (CHANN, ITRC_STATUS, 26, 0 ); | |
1409 | } | |
1410 | ||
1411 | /******************************************************************************/ | |
1412 | /* Device Open/Close/Ioctl Entry Point Section */ | |
1413 | /******************************************************************************/ | |
1414 | ||
1415 | /******************************************************************************/ | |
1416 | /* Function: open_sanity_check() */ | |
1417 | /* Parameters: Pointer to tty structure */ | |
1418 | /* Pointer to file structure */ | |
1419 | /* Returns: Success or failure */ | |
1420 | /* */ | |
1421 | /* Description: */ | |
1422 | /* Verifies the structure magic numbers and cross links. */ | |
1423 | /******************************************************************************/ | |
1424 | #ifdef IP2DEBUG_OPEN | |
1425 | static void | |
1426 | open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) | |
1427 | { | |
1428 | if ( pBrd->i2eValid != I2E_MAGIC ) { | |
1429 | printk(KERN_ERR "IP2: invalid board structure\n" ); | |
1430 | } else if ( pBrd != pCh->pMyBord ) { | |
1431 | printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", | |
1432 | pCh->pMyBord ); | |
1433 | } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { | |
1434 | printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); | |
1435 | } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { | |
1436 | } else { | |
1437 | printk(KERN_INFO "IP2: all pointers check out!\n" ); | |
1438 | } | |
1439 | } | |
1440 | #endif | |
1441 | ||
1442 | ||
1443 | /******************************************************************************/ | |
1444 | /* Function: ip2_open() */ | |
1445 | /* Parameters: Pointer to tty structure */ | |
1446 | /* Pointer to file structure */ | |
1447 | /* Returns: Success or failure */ | |
1448 | /* */ | |
1449 | /* Description: (MANDATORY) */ | |
1450 | /* A successful device open has to run a gauntlet of checks before it */ | |
1451 | /* completes. After some sanity checking and pointer setup, the function */ | |
1452 | /* blocks until all conditions are satisfied. It then initialises the port to */ | |
1453 | /* the default characteristics and returns. */ | |
1454 | /******************************************************************************/ | |
1455 | static int | |
1456 | ip2_open( PTTY tty, struct file *pFile ) | |
1457 | { | |
1458 | wait_queue_t wait; | |
1459 | int rc = 0; | |
1460 | int do_clocal = 0; | |
1461 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
1462 | ||
1463 | ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 ); | |
1464 | ||
1465 | if ( pCh == NULL ) { | |
1466 | return -ENODEV; | |
1467 | } | |
1468 | /* Setup pointer links in device and tty structures */ | |
1469 | pCh->pTTY = tty; | |
1470 | tty->driver_data = pCh; | |
1471 | ||
1472 | #ifdef IP2DEBUG_OPEN | |
1473 | printk(KERN_DEBUG \ | |
1474 | "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n", | |
1475 | tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index); | |
1476 | open_sanity_check ( pCh, pCh->pMyBord ); | |
1477 | #endif | |
1478 | ||
1479 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP); | |
1480 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
1481 | serviceOutgoingFifo( pCh->pMyBord ); | |
1482 | ||
1483 | /* Block here until the port is ready (per serial and istallion) */ | |
1484 | /* | |
1485 | * 1. If the port is in the middle of closing wait for the completion | |
1486 | * and then return the appropriate error. | |
1487 | */ | |
1488 | init_waitqueue_entry(&wait, current); | |
1489 | add_wait_queue(&pCh->close_wait, &wait); | |
1490 | set_current_state( TASK_INTERRUPTIBLE ); | |
1491 | ||
1492 | if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { | |
1493 | if ( pCh->flags & ASYNC_CLOSING ) { | |
e142a31d | 1494 | tty_unlock(); |
1da177e4 | 1495 | schedule(); |
e142a31d | 1496 | tty_lock(); |
1da177e4 LT |
1497 | } |
1498 | if ( tty_hung_up_p(pFile) ) { | |
1499 | set_current_state( TASK_RUNNING ); | |
1500 | remove_wait_queue(&pCh->close_wait, &wait); | |
1501 | return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; | |
1502 | } | |
1503 | } | |
1504 | set_current_state( TASK_RUNNING ); | |
1505 | remove_wait_queue(&pCh->close_wait, &wait); | |
1506 | ||
1507 | /* | |
1508 | * 3. Handle a non-blocking open of a normal port. | |
1509 | */ | |
1510 | if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) { | |
1511 | pCh->flags |= ASYNC_NORMAL_ACTIVE; | |
1512 | goto noblock; | |
1513 | } | |
1514 | /* | |
1515 | * 4. Now loop waiting for the port to be free and carrier present | |
1516 | * (if required). | |
1517 | */ | |
1518 | if ( tty->termios->c_cflag & CLOCAL ) | |
1519 | do_clocal = 1; | |
1520 | ||
1521 | #ifdef IP2DEBUG_OPEN | |
1522 | printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); | |
1523 | #endif | |
1524 | ||
1525 | ++pCh->wopen; | |
1526 | ||
1527 | init_waitqueue_entry(&wait, current); | |
1528 | add_wait_queue(&pCh->open_wait, &wait); | |
1529 | ||
1530 | for(;;) { | |
1531 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); | |
1532 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
1533 | set_current_state( TASK_INTERRUPTIBLE ); | |
1534 | serviceOutgoingFifo( pCh->pMyBord ); | |
1535 | if ( tty_hung_up_p(pFile) ) { | |
1536 | set_current_state( TASK_RUNNING ); | |
1537 | remove_wait_queue(&pCh->open_wait, &wait); | |
1538 | return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; | |
1539 | } | |
1540 | if (!(pCh->flags & ASYNC_CLOSING) && | |
1541 | (do_clocal || (pCh->dataSetIn & I2_DCD) )) { | |
1542 | rc = 0; | |
1543 | break; | |
1544 | } | |
1545 | ||
1546 | #ifdef IP2DEBUG_OPEN | |
1547 | printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", | |
1548 | (pCh->flags & ASYNC_CLOSING)?"True":"False"); | |
1549 | printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); | |
1550 | #endif | |
1551 | ip2trace (CHANN, ITRC_OPEN, 3, 2, 0, | |
1552 | (pCh->flags & ASYNC_CLOSING) ); | |
1553 | /* check for signal */ | |
1554 | if (signal_pending(current)) { | |
1555 | rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); | |
1556 | break; | |
1557 | } | |
e142a31d | 1558 | tty_unlock(); |
1da177e4 | 1559 | schedule(); |
e142a31d | 1560 | tty_lock(); |
1da177e4 LT |
1561 | } |
1562 | set_current_state( TASK_RUNNING ); | |
1563 | remove_wait_queue(&pCh->open_wait, &wait); | |
1564 | ||
1565 | --pCh->wopen; //why count? | |
1566 | ||
1567 | ip2trace (CHANN, ITRC_OPEN, 4, 0 ); | |
1568 | ||
1569 | if (rc != 0 ) { | |
1570 | return rc; | |
1571 | } | |
1572 | pCh->flags |= ASYNC_NORMAL_ACTIVE; | |
1573 | ||
1574 | noblock: | |
1575 | ||
1576 | /* first open - Assign termios structure to port */ | |
1577 | if ( tty->count == 1 ) { | |
1578 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
1579 | /* Now we must send the termios settings to the loadware */ | |
1580 | set_params( pCh, NULL ); | |
1581 | } | |
1582 | ||
1583 | /* | |
1584 | * Now set any i2lib options. These may go away if the i2lib code ends | |
1585 | * up rolled into the mainline. | |
1586 | */ | |
1587 | pCh->channelOptions |= CO_NBLOCK_WRITE; | |
1588 | ||
1589 | #ifdef IP2DEBUG_OPEN | |
1590 | printk (KERN_DEBUG "IP2: open completed\n" ); | |
1591 | #endif | |
1592 | serviceOutgoingFifo( pCh->pMyBord ); | |
1593 | ||
1594 | ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 ); | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
1599 | /******************************************************************************/ | |
1600 | /* Function: ip2_close() */ | |
1601 | /* Parameters: Pointer to tty structure */ | |
1602 | /* Pointer to file structure */ | |
1603 | /* Returns: Nothing */ | |
1604 | /* */ | |
1605 | /* Description: */ | |
1606 | /* */ | |
1607 | /* */ | |
1608 | /******************************************************************************/ | |
1609 | static void | |
1610 | ip2_close( PTTY tty, struct file *pFile ) | |
1611 | { | |
1612 | i2ChanStrPtr pCh = tty->driver_data; | |
1613 | ||
1614 | if ( !pCh ) { | |
1615 | return; | |
1616 | } | |
1617 | ||
1618 | ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 ); | |
1619 | ||
1620 | #ifdef IP2DEBUG_OPEN | |
1621 | printk(KERN_DEBUG "IP2:close %s:\n",tty->name); | |
1622 | #endif | |
1623 | ||
1624 | if ( tty_hung_up_p ( pFile ) ) { | |
1625 | ||
1626 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 ); | |
1627 | ||
1628 | return; | |
1629 | } | |
1630 | if ( tty->count > 1 ) { /* not the last close */ | |
1631 | ||
1632 | ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 ); | |
1633 | ||
1634 | return; | |
1635 | } | |
1636 | pCh->flags |= ASYNC_CLOSING; // last close actually | |
1637 | ||
1638 | tty->closing = 1; | |
1639 | ||
1640 | if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { | |
1641 | /* | |
1642 | * Before we drop DTR, make sure the transmitter has completely drained. | |
1643 | * This uses an timeout, after which the close | |
1644 | * completes. | |
1645 | */ | |
1646 | ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); | |
1647 | } | |
1648 | /* | |
1649 | * At this point we stop accepting input. Here we flush the channel | |
1650 | * input buffer which will allow the board to send up more data. Any | |
1651 | * additional input is tossed at interrupt/poll time. | |
1652 | */ | |
1653 | i2InputFlush( pCh ); | |
1654 | ||
1655 | /* disable DSS reporting */ | |
1656 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 4, | |
1657 | CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
f64ac983 | 1658 | if (tty->termios->c_cflag & HUPCL) { |
1da177e4 LT |
1659 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); |
1660 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
1661 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
1662 | } | |
1663 | ||
1664 | serviceOutgoingFifo ( pCh->pMyBord ); | |
1665 | ||
f34d7a5b | 1666 | tty_ldisc_flush(tty); |
a6fc819e | 1667 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
1668 | tty->closing = 0; |
1669 | ||
1670 | pCh->pTTY = NULL; | |
1671 | ||
1672 | if (pCh->wopen) { | |
1673 | if (pCh->ClosingDelay) { | |
1674 | msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay)); | |
1675 | } | |
1676 | wake_up_interruptible(&pCh->open_wait); | |
1677 | } | |
1678 | ||
1679 | pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1680 | wake_up_interruptible(&pCh->close_wait); | |
1681 | ||
1682 | #ifdef IP2DEBUG_OPEN | |
1683 | DBG_CNT("ip2_close: after wakeups--"); | |
1684 | #endif | |
1685 | ||
1686 | ||
1687 | ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); | |
1688 | ||
1689 | return; | |
1690 | } | |
1691 | ||
1692 | /******************************************************************************/ | |
1693 | /* Function: ip2_hangup() */ | |
1694 | /* Parameters: Pointer to tty structure */ | |
1695 | /* Returns: Nothing */ | |
1696 | /* */ | |
1697 | /* Description: */ | |
1698 | /* */ | |
1699 | /* */ | |
1700 | /******************************************************************************/ | |
1701 | static void | |
1702 | ip2_hangup ( PTTY tty ) | |
1703 | { | |
1704 | i2ChanStrPtr pCh = tty->driver_data; | |
1705 | ||
1706 | if( !pCh ) { | |
1707 | return; | |
1708 | } | |
1709 | ||
1710 | ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 ); | |
1711 | ||
1712 | ip2_flush_buffer(tty); | |
1713 | ||
1714 | /* disable DSS reporting */ | |
1715 | ||
1716 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); | |
1717 | i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
1718 | if ( (tty->termios->c_cflag & HUPCL) ) { | |
1719 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); | |
1720 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
1721 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
1722 | } | |
1723 | i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, | |
1724 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
1725 | serviceOutgoingFifo ( pCh->pMyBord ); | |
1726 | ||
1727 | wake_up_interruptible ( &pCh->delta_msr_wait ); | |
1728 | ||
1729 | pCh->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1730 | pCh->pTTY = NULL; | |
1731 | wake_up_interruptible ( &pCh->open_wait ); | |
1732 | ||
1733 | ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 ); | |
1734 | } | |
1735 | ||
1736 | /******************************************************************************/ | |
1737 | /******************************************************************************/ | |
1738 | /* Device Output Section */ | |
1739 | /******************************************************************************/ | |
1740 | /******************************************************************************/ | |
1741 | ||
1742 | /******************************************************************************/ | |
1743 | /* Function: ip2_write() */ | |
1744 | /* Parameters: Pointer to tty structure */ | |
1745 | /* Flag denoting data is in user (1) or kernel (0) space */ | |
1746 | /* Pointer to data */ | |
1747 | /* Number of bytes to write */ | |
1748 | /* Returns: Number of bytes actually written */ | |
1749 | /* */ | |
1750 | /* Description: (MANDATORY) */ | |
1751 | /* */ | |
1752 | /* */ | |
1753 | /******************************************************************************/ | |
1754 | static int | |
d9e39538 | 1755 | ip2_write( PTTY tty, const unsigned char *pData, int count) |
1da177e4 LT |
1756 | { |
1757 | i2ChanStrPtr pCh = tty->driver_data; | |
1758 | int bytesSent = 0; | |
1759 | unsigned long flags; | |
1760 | ||
1761 | ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); | |
1762 | ||
1763 | /* Flush out any buffered data left over from ip2_putchar() calls. */ | |
1764 | ip2_flush_chars( tty ); | |
1765 | ||
1766 | /* This is the actual move bit. Make sure it does what we need!!!!! */ | |
cf1c63c3 | 1767 | write_lock_irqsave(&pCh->Pbuf_spinlock, flags); |
f061c584 | 1768 | bytesSent = i2Output( pCh, pData, count); |
cf1c63c3 | 1769 | write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1770 | |
1771 | ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); | |
1772 | ||
1773 | return bytesSent > 0 ? bytesSent : 0; | |
1774 | } | |
1775 | ||
1776 | /******************************************************************************/ | |
1777 | /* Function: ip2_putchar() */ | |
1778 | /* Parameters: Pointer to tty structure */ | |
1779 | /* Character to write */ | |
1780 | /* Returns: Nothing */ | |
1781 | /* */ | |
1782 | /* Description: */ | |
1783 | /* */ | |
1784 | /* */ | |
1785 | /******************************************************************************/ | |
f34d7a5b | 1786 | static int |
1da177e4 LT |
1787 | ip2_putchar( PTTY tty, unsigned char ch ) |
1788 | { | |
1789 | i2ChanStrPtr pCh = tty->driver_data; | |
1790 | unsigned long flags; | |
1791 | ||
1792 | // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); | |
1793 | ||
cf1c63c3 | 1794 | write_lock_irqsave(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1795 | pCh->Pbuf[pCh->Pbuf_stuff++] = ch; |
1796 | if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { | |
cf1c63c3 | 1797 | write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1798 | ip2_flush_chars( tty ); |
1799 | } else | |
cf1c63c3 | 1800 | write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
f34d7a5b | 1801 | return 1; |
1da177e4 LT |
1802 | |
1803 | // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); | |
1804 | } | |
1805 | ||
1806 | /******************************************************************************/ | |
1807 | /* Function: ip2_flush_chars() */ | |
1808 | /* Parameters: Pointer to tty structure */ | |
1809 | /* Returns: Nothing */ | |
1810 | /* */ | |
1811 | /* Description: */ | |
1812 | /* */ | |
1813 | /******************************************************************************/ | |
1814 | static void | |
1815 | ip2_flush_chars( PTTY tty ) | |
1816 | { | |
1817 | int strip; | |
1818 | i2ChanStrPtr pCh = tty->driver_data; | |
1819 | unsigned long flags; | |
1820 | ||
cf1c63c3 | 1821 | write_lock_irqsave(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1822 | if ( pCh->Pbuf_stuff ) { |
1823 | ||
1824 | // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); | |
1825 | ||
1826 | // | |
25985edc | 1827 | // We may need to restart i2Output if it does not fulfill this request |
1da177e4 | 1828 | // |
f061c584 | 1829 | strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff); |
1da177e4 LT |
1830 | if ( strip != pCh->Pbuf_stuff ) { |
1831 | memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); | |
1832 | } | |
1833 | pCh->Pbuf_stuff -= strip; | |
1834 | } | |
cf1c63c3 | 1835 | write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1836 | } |
1837 | ||
1838 | /******************************************************************************/ | |
1839 | /* Function: ip2_write_room() */ | |
1840 | /* Parameters: Pointer to tty structure */ | |
1841 | /* Returns: Number of bytes that the driver can accept */ | |
1842 | /* */ | |
1843 | /* Description: */ | |
1844 | /* */ | |
1845 | /******************************************************************************/ | |
1846 | static int | |
1847 | ip2_write_room ( PTTY tty ) | |
1848 | { | |
1849 | int bytesFree; | |
1850 | i2ChanStrPtr pCh = tty->driver_data; | |
1851 | unsigned long flags; | |
1852 | ||
cf1c63c3 | 1853 | read_lock_irqsave(&pCh->Pbuf_spinlock, flags); |
1da177e4 | 1854 | bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; |
cf1c63c3 | 1855 | read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1856 | |
1857 | ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); | |
1858 | ||
1859 | return ((bytesFree > 0) ? bytesFree : 0); | |
1860 | } | |
1861 | ||
1862 | /******************************************************************************/ | |
1863 | /* Function: ip2_chars_in_buf() */ | |
1864 | /* Parameters: Pointer to tty structure */ | |
1865 | /* Returns: Number of bytes queued for transmission */ | |
1866 | /* */ | |
1867 | /* Description: */ | |
1868 | /* */ | |
1869 | /* */ | |
1870 | /******************************************************************************/ | |
1871 | static int | |
1872 | ip2_chars_in_buf ( PTTY tty ) | |
1873 | { | |
1874 | i2ChanStrPtr pCh = tty->driver_data; | |
1875 | int rc; | |
1876 | unsigned long flags; | |
1877 | ||
1878 | ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); | |
1879 | ||
1880 | #ifdef IP2DEBUG_WRITE | |
1881 | printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", | |
1882 | pCh->Obuf_char_count + pCh->Pbuf_stuff, | |
1883 | pCh->Obuf_char_count, pCh->Pbuf_stuff ); | |
1884 | #endif | |
cf1c63c3 | 1885 | read_lock_irqsave(&pCh->Obuf_spinlock, flags); |
1da177e4 | 1886 | rc = pCh->Obuf_char_count; |
cf1c63c3 JS |
1887 | read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); |
1888 | read_lock_irqsave(&pCh->Pbuf_spinlock, flags); | |
1da177e4 | 1889 | rc += pCh->Pbuf_stuff; |
cf1c63c3 | 1890 | read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1891 | return rc; |
1892 | } | |
1893 | ||
1894 | /******************************************************************************/ | |
1895 | /* Function: ip2_flush_buffer() */ | |
1896 | /* Parameters: Pointer to tty structure */ | |
1897 | /* Returns: Nothing */ | |
1898 | /* */ | |
1899 | /* Description: */ | |
1900 | /* */ | |
1901 | /* */ | |
1902 | /******************************************************************************/ | |
1903 | static void | |
1904 | ip2_flush_buffer( PTTY tty ) | |
1905 | { | |
1906 | i2ChanStrPtr pCh = tty->driver_data; | |
1907 | unsigned long flags; | |
1908 | ||
1909 | ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 ); | |
1910 | ||
1911 | #ifdef IP2DEBUG_WRITE | |
1912 | printk (KERN_DEBUG "IP2: flush buffer\n" ); | |
1913 | #endif | |
cf1c63c3 | 1914 | write_lock_irqsave(&pCh->Pbuf_spinlock, flags); |
1da177e4 | 1915 | pCh->Pbuf_stuff = 0; |
cf1c63c3 | 1916 | write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); |
1da177e4 LT |
1917 | i2FlushOutput( pCh ); |
1918 | ip2_owake(tty); | |
1919 | ||
1920 | ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 ); | |
1921 | ||
1922 | } | |
1923 | ||
1924 | /******************************************************************************/ | |
1925 | /* Function: ip2_wait_until_sent() */ | |
1926 | /* Parameters: Pointer to tty structure */ | |
1927 | /* Timeout for wait. */ | |
1928 | /* Returns: Nothing */ | |
1929 | /* */ | |
1930 | /* Description: */ | |
1931 | /* This function is used in place of the normal tty_wait_until_sent, which */ | |
1932 | /* only waits for the driver buffers to be empty (or rather, those buffers */ | |
1933 | /* reported by chars_in_buffer) which doesn't work for IP2 due to the */ | |
1934 | /* indeterminate number of bytes buffered on the board. */ | |
1935 | /******************************************************************************/ | |
1936 | static void | |
1937 | ip2_wait_until_sent ( PTTY tty, int timeout ) | |
1938 | { | |
1939 | int i = jiffies; | |
1940 | i2ChanStrPtr pCh = tty->driver_data; | |
1941 | ||
1942 | tty_wait_until_sent(tty, timeout ); | |
1943 | if ( (i = timeout - (jiffies -i)) > 0) | |
1944 | i2DrainOutput( pCh, i ); | |
1945 | } | |
1946 | ||
1947 | /******************************************************************************/ | |
1948 | /******************************************************************************/ | |
1949 | /* Device Input Section */ | |
1950 | /******************************************************************************/ | |
1951 | /******************************************************************************/ | |
1952 | ||
1953 | /******************************************************************************/ | |
1954 | /* Function: ip2_throttle() */ | |
1955 | /* Parameters: Pointer to tty structure */ | |
1956 | /* Returns: Nothing */ | |
1957 | /* */ | |
1958 | /* Description: */ | |
1959 | /* */ | |
1960 | /* */ | |
1961 | /******************************************************************************/ | |
1962 | static void | |
1963 | ip2_throttle ( PTTY tty ) | |
1964 | { | |
1965 | i2ChanStrPtr pCh = tty->driver_data; | |
1966 | ||
1967 | #ifdef IP2DEBUG_READ | |
1968 | printk (KERN_DEBUG "IP2: throttle\n" ); | |
1969 | #endif | |
1970 | /* | |
1971 | * Signal the poll/interrupt handlers not to forward incoming data to | |
1972 | * the line discipline. This will cause the buffers to fill up in the | |
1973 | * library and thus cause the library routines to send the flow control | |
1974 | * stuff. | |
1975 | */ | |
1976 | pCh->throttled = 1; | |
1977 | } | |
1978 | ||
1979 | /******************************************************************************/ | |
1980 | /* Function: ip2_unthrottle() */ | |
1981 | /* Parameters: Pointer to tty structure */ | |
1982 | /* Returns: Nothing */ | |
1983 | /* */ | |
1984 | /* Description: */ | |
1985 | /* */ | |
1986 | /* */ | |
1987 | /******************************************************************************/ | |
1988 | static void | |
1989 | ip2_unthrottle ( PTTY tty ) | |
1990 | { | |
1991 | i2ChanStrPtr pCh = tty->driver_data; | |
1992 | unsigned long flags; | |
1993 | ||
1994 | #ifdef IP2DEBUG_READ | |
1995 | printk (KERN_DEBUG "IP2: unthrottle\n" ); | |
1996 | #endif | |
1997 | ||
1998 | /* Pass incoming data up to the line discipline again. */ | |
1999 | pCh->throttled = 0; | |
2000 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); | |
2001 | serviceOutgoingFifo( pCh->pMyBord ); | |
cf1c63c3 | 2002 | read_lock_irqsave(&pCh->Ibuf_spinlock, flags); |
1da177e4 | 2003 | if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { |
cf1c63c3 | 2004 | read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); |
1da177e4 LT |
2005 | #ifdef IP2DEBUG_READ |
2006 | printk (KERN_DEBUG "i2Input called from unthrottle\n" ); | |
2007 | #endif | |
2008 | i2Input( pCh ); | |
2009 | } else | |
cf1c63c3 | 2010 | read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); |
1da177e4 LT |
2011 | } |
2012 | ||
2013 | static void | |
2014 | ip2_start ( PTTY tty ) | |
2015 | { | |
2016 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
2017 | ||
2018 | i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); | |
2019 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); | |
2020 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); | |
2021 | #ifdef IP2DEBUG_WRITE | |
2022 | printk (KERN_DEBUG "IP2: start tx\n" ); | |
2023 | #endif | |
2024 | } | |
2025 | ||
2026 | static void | |
2027 | ip2_stop ( PTTY tty ) | |
2028 | { | |
2029 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
2030 | ||
2031 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); | |
2032 | #ifdef IP2DEBUG_WRITE | |
2033 | printk (KERN_DEBUG "IP2: stop tx\n" ); | |
2034 | #endif | |
2035 | } | |
2036 | ||
2037 | /******************************************************************************/ | |
2038 | /* Device Ioctl Section */ | |
2039 | /******************************************************************************/ | |
2040 | ||
60b33c13 | 2041 | static int ip2_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
2042 | { |
2043 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
d9e39538 | 2044 | #ifdef ENABLE_DSSNOW |
1da177e4 | 2045 | wait_queue_t wait; |
d9e39538 | 2046 | #endif |
1da177e4 LT |
2047 | |
2048 | if (pCh == NULL) | |
2049 | return -ENODEV; | |
2050 | ||
2051 | /* | |
2052 | FIXME - the following code is causing a NULL pointer dereference in | |
2053 | 2.3.51 in an interrupt handler. It's suppose to prompt the board | |
2054 | to return the DSS signal status immediately. Why doesn't it do | |
2055 | the same thing in 2.2.14? | |
2056 | */ | |
2057 | ||
2058 | /* This thing is still busted in the 1.2.12 driver on 2.4.x | |
2059 | and even hoses the serial console so the oops can be trapped. | |
2060 | /\/\|=mhw=|\/\/ */ | |
2061 | ||
2062 | #ifdef ENABLE_DSSNOW | |
2063 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW); | |
2064 | ||
2065 | init_waitqueue_entry(&wait, current); | |
2066 | add_wait_queue(&pCh->dss_now_wait, &wait); | |
2067 | set_current_state( TASK_INTERRUPTIBLE ); | |
2068 | ||
2069 | serviceOutgoingFifo( pCh->pMyBord ); | |
2070 | ||
2071 | schedule(); | |
2072 | ||
2073 | set_current_state( TASK_RUNNING ); | |
2074 | remove_wait_queue(&pCh->dss_now_wait, &wait); | |
2075 | ||
2076 | if (signal_pending(current)) { | |
2077 | return -EINTR; | |
2078 | } | |
2079 | #endif | |
2080 | return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) | |
2081 | | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) | |
2082 | | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0) | |
2083 | | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0) | |
2084 | | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0) | |
2085 | | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); | |
2086 | } | |
2087 | ||
20b9d177 | 2088 | static int ip2_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
2089 | unsigned int set, unsigned int clear) |
2090 | { | |
2091 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
2092 | ||
2093 | if (pCh == NULL) | |
2094 | return -ENODEV; | |
2095 | ||
2096 | if (set & TIOCM_RTS) { | |
2097 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); | |
2098 | pCh->dataSetOut |= I2_RTS; | |
2099 | } | |
2100 | if (set & TIOCM_DTR) { | |
2101 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); | |
2102 | pCh->dataSetOut |= I2_DTR; | |
2103 | } | |
2104 | ||
2105 | if (clear & TIOCM_RTS) { | |
2106 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); | |
2107 | pCh->dataSetOut &= ~I2_RTS; | |
2108 | } | |
2109 | if (clear & TIOCM_DTR) { | |
2110 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); | |
2111 | pCh->dataSetOut &= ~I2_DTR; | |
2112 | } | |
2113 | serviceOutgoingFifo( pCh->pMyBord ); | |
2114 | return 0; | |
2115 | } | |
2116 | ||
2117 | /******************************************************************************/ | |
2118 | /* Function: ip2_ioctl() */ | |
2119 | /* Parameters: Pointer to tty structure */ | |
2120 | /* Pointer to file structure */ | |
2121 | /* Command */ | |
2122 | /* Argument */ | |
2123 | /* Returns: Success or failure */ | |
2124 | /* */ | |
2125 | /* Description: */ | |
2126 | /* */ | |
2127 | /* */ | |
2128 | /******************************************************************************/ | |
2129 | static int | |
6caa76b7 | 2130 | ip2_ioctl ( PTTY tty, UINT cmd, ULONG arg ) |
1da177e4 LT |
2131 | { |
2132 | wait_queue_t wait; | |
2133 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
d9e39538 | 2134 | i2eBordStrPtr pB; |
1da177e4 | 2135 | struct async_icount cprev, cnow; /* kernel counter temps */ |
1da177e4 LT |
2136 | int rc = 0; |
2137 | unsigned long flags; | |
2138 | void __user *argp = (void __user *)arg; | |
2139 | ||
d9e39538 | 2140 | if ( pCh == NULL ) |
1da177e4 | 2141 | return -ENODEV; |
d9e39538 AC |
2142 | |
2143 | pB = pCh->pMyBord; | |
1da177e4 LT |
2144 | |
2145 | ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); | |
2146 | ||
2147 | #ifdef IP2DEBUG_IOCTL | |
2148 | printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); | |
2149 | #endif | |
2150 | ||
2151 | switch(cmd) { | |
2152 | case TIOCGSERIAL: | |
2153 | ||
2154 | ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc ); | |
2155 | ||
2156 | rc = get_serial_info(pCh, argp); | |
2157 | if (rc) | |
2158 | return rc; | |
2159 | break; | |
2160 | ||
2161 | case TIOCSSERIAL: | |
2162 | ||
2163 | ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc ); | |
2164 | ||
2165 | rc = set_serial_info(pCh, argp); | |
2166 | if (rc) | |
2167 | return rc; | |
2168 | break; | |
2169 | ||
2170 | case TCXONC: | |
2171 | rc = tty_check_change(tty); | |
2172 | if (rc) | |
2173 | return rc; | |
2174 | switch (arg) { | |
2175 | case TCOOFF: | |
2176 | //return -ENOIOCTLCMD; | |
2177 | break; | |
2178 | case TCOON: | |
2179 | //return -ENOIOCTLCMD; | |
2180 | break; | |
2181 | case TCIOFF: | |
2182 | if (STOP_CHAR(tty) != __DISABLED_CHAR) { | |
2183 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, | |
2184 | CMD_XMIT_NOW(STOP_CHAR(tty))); | |
2185 | } | |
2186 | break; | |
2187 | case TCION: | |
2188 | if (START_CHAR(tty) != __DISABLED_CHAR) { | |
2189 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, | |
2190 | CMD_XMIT_NOW(START_CHAR(tty))); | |
2191 | } | |
2192 | break; | |
2193 | default: | |
2194 | return -EINVAL; | |
2195 | } | |
2196 | return 0; | |
2197 | ||
2198 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
2199 | rc = tty_check_change(tty); | |
2200 | ||
2201 | ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc ); | |
2202 | ||
2203 | if (!rc) { | |
2204 | ip2_wait_until_sent(tty,0); | |
2205 | if (!arg) { | |
2206 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); | |
2207 | serviceOutgoingFifo( pCh->pMyBord ); | |
2208 | } | |
2209 | } | |
2210 | break; | |
2211 | ||
2212 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
2213 | rc = tty_check_change(tty); | |
2214 | ||
2215 | ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc ); | |
2216 | ||
2217 | if (!rc) { | |
2218 | ip2_wait_until_sent(tty,0); | |
2219 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2220 | CMD_SEND_BRK(arg ? arg*100 : 250)); | |
2221 | serviceOutgoingFifo ( pCh->pMyBord ); | |
2222 | } | |
2223 | break; | |
2224 | ||
2225 | case TIOCGSOFTCAR: | |
2226 | ||
2227 | ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc ); | |
2228 | ||
2229 | rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
2230 | if (rc) | |
2231 | return rc; | |
2232 | break; | |
2233 | ||
2234 | case TIOCSSOFTCAR: | |
2235 | ||
2236 | ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc ); | |
2237 | ||
2238 | rc = get_user(arg,(unsigned long __user *) argp); | |
2239 | if (rc) | |
2240 | return rc; | |
2241 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | |
2242 | | (arg ? CLOCAL : 0)); | |
2243 | ||
2244 | break; | |
2245 | ||
2246 | /* | |
2247 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask | |
2248 | * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS | |
2249 | * for masking). Caller should use TIOCGICOUNT to see which one it was | |
2250 | */ | |
2251 | case TIOCMIWAIT: | |
cf1c63c3 | 2252 | write_lock_irqsave(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2253 | cprev = pCh->icount; /* note the counters on entry */ |
cf1c63c3 | 2254 | write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2255 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, |
2256 | CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); | |
2257 | init_waitqueue_entry(&wait, current); | |
2258 | add_wait_queue(&pCh->delta_msr_wait, &wait); | |
2259 | set_current_state( TASK_INTERRUPTIBLE ); | |
2260 | ||
2261 | serviceOutgoingFifo( pCh->pMyBord ); | |
2262 | for(;;) { | |
2263 | ip2trace (CHANN, ITRC_IOCTL, 10, 0 ); | |
2264 | ||
2265 | schedule(); | |
2266 | ||
2267 | ip2trace (CHANN, ITRC_IOCTL, 11, 0 ); | |
2268 | ||
2269 | /* see if a signal did it */ | |
2270 | if (signal_pending(current)) { | |
2271 | rc = -ERESTARTSYS; | |
2272 | break; | |
2273 | } | |
cf1c63c3 | 2274 | write_lock_irqsave(&pB->read_fifo_spinlock, flags); |
1da177e4 | 2275 | cnow = pCh->icount; /* atomic copy */ |
cf1c63c3 | 2276 | write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); |
1da177e4 LT |
2277 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2278 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { | |
2279 | rc = -EIO; /* no change => rc */ | |
2280 | break; | |
2281 | } | |
2282 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2283 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2284 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2285 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
2286 | rc = 0; | |
2287 | break; | |
2288 | } | |
2289 | cprev = cnow; | |
2290 | } | |
2291 | set_current_state( TASK_RUNNING ); | |
2292 | remove_wait_queue(&pCh->delta_msr_wait, &wait); | |
2293 | ||
2294 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, | |
2295 | CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); | |
2296 | if ( ! (pCh->flags & ASYNC_CHECK_CD)) { | |
2297 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP); | |
2298 | } | |
2299 | serviceOutgoingFifo( pCh->pMyBord ); | |
2300 | return rc; | |
2301 | break; | |
2302 | ||
1da177e4 LT |
2303 | /* |
2304 | * The rest are not supported by this driver. By returning -ENOIOCTLCMD they | |
2305 | * will be passed to the line discipline for it to handle. | |
2306 | */ | |
2307 | case TIOCSERCONFIG: | |
2308 | case TIOCSERGWILD: | |
2309 | case TIOCSERGETLSR: | |
2310 | case TIOCSERSWILD: | |
2311 | case TIOCSERGSTRUCT: | |
2312 | case TIOCSERGETMULTI: | |
2313 | case TIOCSERSETMULTI: | |
2314 | ||
2315 | default: | |
2316 | ip2trace (CHANN, ITRC_IOCTL, 12, 0 ); | |
2317 | ||
2318 | rc = -ENOIOCTLCMD; | |
2319 | break; | |
2320 | } | |
2321 | ||
2322 | ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 ); | |
2323 | ||
2324 | return rc; | |
2325 | } | |
2326 | ||
0587102c AC |
2327 | static int ip2_get_icount(struct tty_struct *tty, |
2328 | struct serial_icounter_struct *icount) | |
2329 | { | |
2330 | i2ChanStrPtr pCh = DevTable[tty->index]; | |
2331 | i2eBordStrPtr pB; | |
2332 | struct async_icount cnow; /* kernel counter temp */ | |
2333 | unsigned long flags; | |
2334 | ||
2335 | if ( pCh == NULL ) | |
2336 | return -ENODEV; | |
2337 | ||
2338 | pB = pCh->pMyBord; | |
2339 | ||
2340 | /* | |
2341 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2342 | * Return: write counters to the user passed counter struct | |
2343 | * NB: both 1->0 and 0->1 transitions are counted except for RI where | |
2344 | * only 0->1 is counted. The controller is quite capable of counting | |
2345 | * both, but this done to preserve compatibility with the standard | |
2346 | * serial driver. | |
2347 | */ | |
2348 | ||
2349 | write_lock_irqsave(&pB->read_fifo_spinlock, flags); | |
2350 | cnow = pCh->icount; | |
2351 | write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); | |
2352 | ||
2353 | icount->cts = cnow.cts; | |
2354 | icount->dsr = cnow.dsr; | |
2355 | icount->rng = cnow.rng; | |
2356 | icount->dcd = cnow.dcd; | |
2357 | icount->rx = cnow.rx; | |
2358 | icount->tx = cnow.tx; | |
2359 | icount->frame = cnow.frame; | |
2360 | icount->overrun = cnow.overrun; | |
2361 | icount->parity = cnow.parity; | |
2362 | icount->brk = cnow.brk; | |
2363 | icount->buf_overrun = cnow.buf_overrun; | |
2364 | return 0; | |
2365 | } | |
2366 | ||
1da177e4 LT |
2367 | /******************************************************************************/ |
2368 | /* Function: GetSerialInfo() */ | |
2369 | /* Parameters: Pointer to channel structure */ | |
2370 | /* Pointer to old termios structure */ | |
2371 | /* Returns: Nothing */ | |
2372 | /* */ | |
2373 | /* Description: */ | |
2374 | /* This is to support the setserial command, and requires processing of the */ | |
2375 | /* standard Linux serial structure. */ | |
2376 | /******************************************************************************/ | |
2377 | static int | |
2378 | get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo ) | |
2379 | { | |
2380 | struct serial_struct tmp; | |
2381 | ||
2382 | memset ( &tmp, 0, sizeof(tmp) ); | |
2383 | tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; | |
2384 | if (BID_HAS_654(tmp.type)) { | |
2385 | tmp.type = PORT_16650; | |
2386 | } else { | |
2387 | tmp.type = PORT_CIRRUS; | |
2388 | } | |
2389 | tmp.line = pCh->port_index; | |
2390 | tmp.port = pCh->pMyBord->i2eBase; | |
2391 | tmp.irq = ip2config.irq[pCh->port_index/64]; | |
2392 | tmp.flags = pCh->flags; | |
2393 | tmp.baud_base = pCh->BaudBase; | |
2394 | tmp.close_delay = pCh->ClosingDelay; | |
2395 | tmp.closing_wait = pCh->ClosingWaitTime; | |
2396 | tmp.custom_divisor = pCh->BaudDivisor; | |
2397 | return copy_to_user(retinfo,&tmp,sizeof(*retinfo)); | |
2398 | } | |
2399 | ||
2400 | /******************************************************************************/ | |
2401 | /* Function: SetSerialInfo() */ | |
2402 | /* Parameters: Pointer to channel structure */ | |
2403 | /* Pointer to old termios structure */ | |
2404 | /* Returns: Nothing */ | |
2405 | /* */ | |
2406 | /* Description: */ | |
2407 | /* This function provides support for setserial, which uses the TIOCSSERIAL */ | |
2408 | /* ioctl. Not all setserial parameters are relevant. If the user attempts to */ | |
2409 | /* change the IRQ, address or type of the port the ioctl fails. */ | |
2410 | /******************************************************************************/ | |
2411 | static int | |
2412 | set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info ) | |
2413 | { | |
2414 | struct serial_struct ns; | |
2415 | int old_flags, old_baud_divisor; | |
2416 | ||
2417 | if (copy_from_user(&ns, new_info, sizeof (ns))) | |
2418 | return -EFAULT; | |
2419 | ||
2420 | /* | |
2421 | * We don't allow setserial to change IRQ, board address, type or baud | |
2422 | * base. Also line nunber as such is meaningless but we use it for our | |
2423 | * array index so it is fixed also. | |
2424 | */ | |
2425 | if ( (ns.irq != ip2config.irq[pCh->port_index]) | |
2426 | || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase))) | |
2427 | || (ns.baud_base != pCh->BaudBase) | |
2428 | || (ns.line != pCh->port_index) ) { | |
2429 | return -EINVAL; | |
2430 | } | |
2431 | ||
2432 | old_flags = pCh->flags; | |
2433 | old_baud_divisor = pCh->BaudDivisor; | |
2434 | ||
2435 | if ( !capable(CAP_SYS_ADMIN) ) { | |
2436 | if ( ( ns.close_delay != pCh->ClosingDelay ) || | |
2437 | ( (ns.flags & ~ASYNC_USR_MASK) != | |
2438 | (pCh->flags & ~ASYNC_USR_MASK) ) ) { | |
2439 | return -EPERM; | |
2440 | } | |
2441 | ||
2442 | pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | | |
2443 | (ns.flags & ASYNC_USR_MASK); | |
2444 | pCh->BaudDivisor = ns.custom_divisor; | |
2445 | } else { | |
2446 | pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | | |
2447 | (ns.flags & ASYNC_FLAGS); | |
2448 | pCh->BaudDivisor = ns.custom_divisor; | |
2449 | pCh->ClosingDelay = ns.close_delay * HZ/100; | |
2450 | pCh->ClosingWaitTime = ns.closing_wait * HZ/100; | |
2451 | } | |
2452 | ||
2453 | if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) | |
2454 | || (old_baud_divisor != pCh->BaudDivisor) ) { | |
2455 | // Invalidate speed and reset parameters | |
2456 | set_params( pCh, NULL ); | |
2457 | } | |
2458 | ||
2459 | return 0; | |
2460 | } | |
2461 | ||
2462 | /******************************************************************************/ | |
2463 | /* Function: ip2_set_termios() */ | |
2464 | /* Parameters: Pointer to tty structure */ | |
2465 | /* Pointer to old termios structure */ | |
2466 | /* Returns: Nothing */ | |
2467 | /* */ | |
2468 | /* Description: */ | |
2469 | /* */ | |
2470 | /* */ | |
2471 | /******************************************************************************/ | |
2472 | static void | |
606d099c | 2473 | ip2_set_termios( PTTY tty, struct ktermios *old_termios ) |
1da177e4 LT |
2474 | { |
2475 | i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; | |
2476 | ||
2477 | #ifdef IP2DEBUG_IOCTL | |
2478 | printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); | |
2479 | #endif | |
2480 | ||
2481 | set_params( pCh, old_termios ); | |
2482 | } | |
2483 | ||
2484 | /******************************************************************************/ | |
2485 | /* Function: ip2_set_line_discipline() */ | |
2486 | /* Parameters: Pointer to tty structure */ | |
2487 | /* Returns: Nothing */ | |
2488 | /* */ | |
2489 | /* Description: Does nothing */ | |
2490 | /* */ | |
2491 | /* */ | |
2492 | /******************************************************************************/ | |
2493 | static void | |
2494 | ip2_set_line_discipline ( PTTY tty ) | |
2495 | { | |
2496 | #ifdef IP2DEBUG_IOCTL | |
2497 | printk (KERN_DEBUG "IP2: set line discipline\n" ); | |
2498 | #endif | |
2499 | ||
2500 | ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); | |
2501 | ||
2502 | } | |
2503 | ||
2504 | /******************************************************************************/ | |
2505 | /* Function: SetLine Characteristics() */ | |
2506 | /* Parameters: Pointer to channel structure */ | |
2507 | /* Returns: Nothing */ | |
2508 | /* */ | |
2509 | /* Description: */ | |
2510 | /* This routine is called to update the channel structure with the new line */ | |
2511 | /* characteristics, and send the appropriate commands to the board when they */ | |
2512 | /* change. */ | |
2513 | /******************************************************************************/ | |
2514 | static void | |
606d099c | 2515 | set_params( i2ChanStrPtr pCh, struct ktermios *o_tios ) |
1da177e4 LT |
2516 | { |
2517 | tcflag_t cflag, iflag, lflag; | |
2518 | char stop_char, start_char; | |
606d099c | 2519 | struct ktermios dummy; |
1da177e4 LT |
2520 | |
2521 | lflag = pCh->pTTY->termios->c_lflag; | |
2522 | cflag = pCh->pTTY->termios->c_cflag; | |
2523 | iflag = pCh->pTTY->termios->c_iflag; | |
2524 | ||
2525 | if (o_tios == NULL) { | |
2526 | dummy.c_lflag = ~lflag; | |
2527 | dummy.c_cflag = ~cflag; | |
2528 | dummy.c_iflag = ~iflag; | |
2529 | o_tios = &dummy; | |
2530 | } | |
2531 | ||
2532 | { | |
2533 | switch ( cflag & CBAUD ) { | |
2534 | case B0: | |
2535 | i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); | |
2536 | pCh->dataSetOut &= ~(I2_DTR | I2_RTS); | |
2537 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); | |
2538 | pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); | |
2539 | goto service_it; | |
2540 | break; | |
2541 | case B38400: | |
2542 | /* | |
2543 | * This is the speed that is overloaded with all the other high | |
2544 | * speeds, depending upon the flag settings. | |
2545 | */ | |
2546 | if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { | |
2547 | pCh->speed = CBR_57600; | |
2548 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { | |
2549 | pCh->speed = CBR_115200; | |
2550 | } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { | |
2551 | pCh->speed = CBR_C1; | |
2552 | } else { | |
2553 | pCh->speed = CBR_38400; | |
2554 | } | |
2555 | break; | |
2556 | case B50: pCh->speed = CBR_50; break; | |
2557 | case B75: pCh->speed = CBR_75; break; | |
2558 | case B110: pCh->speed = CBR_110; break; | |
2559 | case B134: pCh->speed = CBR_134; break; | |
2560 | case B150: pCh->speed = CBR_150; break; | |
2561 | case B200: pCh->speed = CBR_200; break; | |
2562 | case B300: pCh->speed = CBR_300; break; | |
2563 | case B600: pCh->speed = CBR_600; break; | |
2564 | case B1200: pCh->speed = CBR_1200; break; | |
2565 | case B1800: pCh->speed = CBR_1800; break; | |
2566 | case B2400: pCh->speed = CBR_2400; break; | |
2567 | case B4800: pCh->speed = CBR_4800; break; | |
2568 | case B9600: pCh->speed = CBR_9600; break; | |
2569 | case B19200: pCh->speed = CBR_19200; break; | |
2570 | case B57600: pCh->speed = CBR_57600; break; | |
2571 | case B115200: pCh->speed = CBR_115200; break; | |
2572 | case B153600: pCh->speed = CBR_153600; break; | |
2573 | case B230400: pCh->speed = CBR_230400; break; | |
2574 | case B307200: pCh->speed = CBR_307200; break; | |
2575 | case B460800: pCh->speed = CBR_460800; break; | |
2576 | case B921600: pCh->speed = CBR_921600; break; | |
2577 | default: pCh->speed = CBR_9600; break; | |
2578 | } | |
2579 | if ( pCh->speed == CBR_C1 ) { | |
2580 | // Process the custom speed parameters. | |
2581 | int bps = pCh->BaudBase / pCh->BaudDivisor; | |
2582 | if ( bps == 921600 ) { | |
2583 | pCh->speed = CBR_921600; | |
2584 | } else { | |
2585 | bps = bps/10; | |
2586 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); | |
2587 | } | |
2588 | } | |
2589 | i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); | |
2590 | ||
2591 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); | |
2592 | pCh->dataSetOut |= (I2_DTR | I2_RTS); | |
2593 | } | |
2594 | if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) | |
2595 | { | |
2596 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, | |
2597 | CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); | |
2598 | } | |
2599 | if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) | |
2600 | { | |
2601 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, | |
2602 | CMD_SETPAR( | |
2603 | (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) | |
2604 | ) | |
2605 | ); | |
2606 | } | |
2607 | /* byte size and parity */ | |
2608 | if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) | |
2609 | { | |
2610 | int datasize; | |
2611 | switch ( cflag & CSIZE ) { | |
2612 | case CS5: datasize = CSZ_5; break; | |
2613 | case CS6: datasize = CSZ_6; break; | |
2614 | case CS7: datasize = CSZ_7; break; | |
2615 | case CS8: datasize = CSZ_8; break; | |
2616 | default: datasize = CSZ_5; break; /* as per serial.c */ | |
2617 | } | |
2618 | i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); | |
2619 | } | |
2620 | /* Process CTS flow control flag setting */ | |
2621 | if ( (cflag & CRTSCTS) ) { | |
2622 | i2QueueCommands(PTYPE_INLINE, pCh, 100, | |
2623 | 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); | |
2624 | } else { | |
2625 | i2QueueCommands(PTYPE_INLINE, pCh, 100, | |
2626 | 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); | |
2627 | } | |
2628 | // | |
2629 | // Process XON/XOFF flow control flags settings | |
2630 | // | |
2631 | stop_char = STOP_CHAR(pCh->pTTY); | |
2632 | start_char = START_CHAR(pCh->pTTY); | |
2633 | ||
2634 | //////////// can't be \000 | |
2635 | if (stop_char == __DISABLED_CHAR ) | |
2636 | { | |
2637 | stop_char = ~__DISABLED_CHAR; | |
2638 | } | |
2639 | if (start_char == __DISABLED_CHAR ) | |
2640 | { | |
2641 | start_char = ~__DISABLED_CHAR; | |
2642 | } | |
2643 | ///////////////////////////////// | |
2644 | ||
2645 | if ( o_tios->c_cc[VSTART] != start_char ) | |
2646 | { | |
2647 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); | |
2648 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); | |
2649 | } | |
2650 | if ( o_tios->c_cc[VSTOP] != stop_char ) | |
2651 | { | |
2652 | i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); | |
2653 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); | |
2654 | } | |
2655 | if (stop_char == __DISABLED_CHAR ) | |
2656 | { | |
2657 | stop_char = ~__DISABLED_CHAR; //TEST123 | |
2658 | goto no_xoff; | |
2659 | } | |
2660 | if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) | |
2661 | { | |
2662 | if ( iflag & IXOFF ) { // Enable XOFF output flow control | |
2663 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); | |
2664 | } else { // Disable XOFF output flow control | |
2665 | no_xoff: | |
2666 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); | |
2667 | } | |
2668 | } | |
2669 | if (start_char == __DISABLED_CHAR ) | |
2670 | { | |
2671 | goto no_xon; | |
2672 | } | |
2673 | if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) | |
2674 | { | |
2675 | if ( iflag & IXON ) { | |
2676 | if ( iflag & IXANY ) { // Enable XON/XANY output flow control | |
2677 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); | |
2678 | } else { // Enable XON output flow control | |
2679 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); | |
2680 | } | |
2681 | } else { // Disable XON output flow control | |
2682 | no_xon: | |
2683 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); | |
2684 | } | |
2685 | } | |
2686 | if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) | |
2687 | { | |
2688 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2689 | CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); | |
2690 | } | |
2691 | if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) | |
2692 | { | |
2693 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, | |
2694 | CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); | |
2695 | } | |
2696 | ||
2697 | if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) | |
2698 | ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) | |
2699 | { | |
2700 | char brkrpt = 0; | |
2701 | char parrpt = 0; | |
2702 | ||
2703 | if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ | |
2704 | /* Ignore breaks altogether */ | |
2705 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); | |
2706 | } else { | |
2707 | if ( iflag & BRKINT ) { | |
2708 | if ( iflag & PARMRK ) { | |
2709 | brkrpt = 0x0a; // exception an inline triple | |
2710 | } else { | |
2711 | brkrpt = 0x1a; // exception and NULL | |
2712 | } | |
2713 | brkrpt |= 0x04; // flush input | |
2714 | } else { | |
2715 | if ( iflag & PARMRK ) { | |
2716 | brkrpt = 0x0b; //POSIX triple \0377 \0 \0 | |
2717 | } else { | |
2718 | brkrpt = 0x01; // Null only | |
2719 | } | |
2720 | } | |
2721 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); | |
2722 | } | |
2723 | ||
2724 | if (iflag & IGNPAR) { | |
2725 | parrpt = 0x20; | |
2726 | /* would be 2 for not cirrus bug */ | |
2727 | /* would be 0x20 cept for cirrus bug */ | |
2728 | } else { | |
2729 | if ( iflag & PARMRK ) { | |
2730 | /* | |
2731 | * Replace error characters with 3-byte sequence (\0377,\0,char) | |
2732 | */ | |
2733 | parrpt = 0x04 ; | |
2734 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); | |
2735 | } else { | |
2736 | parrpt = 0x03; | |
2737 | } | |
2738 | } | |
2739 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); | |
2740 | } | |
2741 | if (cflag & CLOCAL) { | |
2742 | // Status reporting fails for DCD if this is off | |
2743 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); | |
2744 | pCh->flags &= ~ASYNC_CHECK_CD; | |
2745 | } else { | |
2746 | i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); | |
2747 | pCh->flags |= ASYNC_CHECK_CD; | |
2748 | } | |
2749 | ||
1da177e4 LT |
2750 | service_it: |
2751 | i2DrainOutput( pCh, 100 ); | |
2752 | } | |
2753 | ||
2754 | /******************************************************************************/ | |
2755 | /* IPL Device Section */ | |
2756 | /******************************************************************************/ | |
2757 | ||
2758 | /******************************************************************************/ | |
2759 | /* Function: ip2_ipl_read() */ | |
2760 | /* Parameters: Pointer to device inode */ | |
2761 | /* Pointer to file structure */ | |
2762 | /* Pointer to data */ | |
2763 | /* Number of bytes to read */ | |
2764 | /* Returns: Success or failure */ | |
2765 | /* */ | |
2766 | /* Description: Ugly */ | |
2767 | /* */ | |
2768 | /* */ | |
2769 | /******************************************************************************/ | |
2770 | ||
2771 | static | |
2772 | ssize_t | |
2773 | ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off ) | |
2774 | { | |
a7113a96 | 2775 | unsigned int minor = iminor(pFile->f_path.dentry->d_inode); |
1da177e4 LT |
2776 | int rc = 0; |
2777 | ||
2778 | #ifdef IP2DEBUG_IPL | |
2779 | printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); | |
2780 | #endif | |
2781 | ||
2782 | switch( minor ) { | |
2783 | case 0: // IPL device | |
2784 | rc = -EINVAL; | |
2785 | break; | |
2786 | case 1: // Status dump | |
2787 | rc = -EINVAL; | |
2788 | break; | |
2789 | case 2: // Ping device | |
2790 | rc = -EINVAL; | |
2791 | break; | |
2792 | case 3: // Trace device | |
2793 | rc = DumpTraceBuffer ( pData, count ); | |
2794 | break; | |
2795 | case 4: // Trace device | |
2796 | rc = DumpFifoBuffer ( pData, count ); | |
2797 | break; | |
2798 | default: | |
2799 | rc = -ENODEV; | |
2800 | break; | |
2801 | } | |
2802 | return rc; | |
2803 | } | |
2804 | ||
2805 | static int | |
2806 | DumpFifoBuffer ( char __user *pData, int count ) | |
2807 | { | |
2808 | #ifdef DEBUG_FIFO | |
2809 | int rc; | |
2810 | rc = copy_to_user(pData, DBGBuf, count); | |
2811 | ||
2812 | printk(KERN_DEBUG "Last index %d\n", I ); | |
2813 | ||
2814 | return count; | |
2815 | #endif /* DEBUG_FIFO */ | |
2816 | return 0; | |
2817 | } | |
2818 | ||
2819 | static int | |
2820 | DumpTraceBuffer ( char __user *pData, int count ) | |
2821 | { | |
2822 | #ifdef IP2DEBUG_TRACE | |
2823 | int rc; | |
2824 | int dumpcount; | |
2825 | int chunk; | |
2826 | int *pIndex = (int __user *)pData; | |
2827 | ||
2828 | if ( count < (sizeof(int) * 6) ) { | |
2829 | return -EIO; | |
2830 | } | |
2831 | rc = put_user(tracewrap, pIndex ); | |
2832 | rc = put_user(TRACEMAX, ++pIndex ); | |
2833 | rc = put_user(tracestrip, ++pIndex ); | |
2834 | rc = put_user(tracestuff, ++pIndex ); | |
2835 | pData += sizeof(int) * 6; | |
2836 | count -= sizeof(int) * 6; | |
2837 | ||
2838 | dumpcount = tracestuff - tracestrip; | |
2839 | if ( dumpcount < 0 ) { | |
2840 | dumpcount += TRACEMAX; | |
2841 | } | |
2842 | if ( dumpcount > count ) { | |
2843 | dumpcount = count; | |
2844 | } | |
2845 | chunk = TRACEMAX - tracestrip; | |
2846 | if ( dumpcount > chunk ) { | |
2847 | rc = copy_to_user(pData, &tracebuf[tracestrip], | |
2848 | chunk * sizeof(tracebuf[0]) ); | |
2849 | pData += chunk * sizeof(tracebuf[0]); | |
2850 | tracestrip = 0; | |
2851 | chunk = dumpcount - chunk; | |
2852 | } else { | |
2853 | chunk = dumpcount; | |
2854 | } | |
2855 | rc = copy_to_user(pData, &tracebuf[tracestrip], | |
2856 | chunk * sizeof(tracebuf[0]) ); | |
2857 | tracestrip += chunk; | |
2858 | tracewrap = 0; | |
2859 | ||
2860 | rc = put_user(tracestrip, ++pIndex ); | |
2861 | rc = put_user(tracestuff, ++pIndex ); | |
2862 | ||
2863 | return dumpcount; | |
2864 | #else | |
2865 | return 0; | |
2866 | #endif | |
2867 | } | |
2868 | ||
2869 | /******************************************************************************/ | |
2870 | /* Function: ip2_ipl_write() */ | |
2871 | /* Parameters: */ | |
2872 | /* Pointer to file structure */ | |
2873 | /* Pointer to data */ | |
2874 | /* Number of bytes to write */ | |
2875 | /* Returns: Success or failure */ | |
2876 | /* */ | |
2877 | /* Description: */ | |
2878 | /* */ | |
2879 | /* */ | |
2880 | /******************************************************************************/ | |
2881 | static ssize_t | |
2882 | ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off) | |
2883 | { | |
2884 | #ifdef IP2DEBUG_IPL | |
2885 | printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); | |
2886 | #endif | |
2887 | return 0; | |
2888 | } | |
2889 | ||
2890 | /******************************************************************************/ | |
2891 | /* Function: ip2_ipl_ioctl() */ | |
2892 | /* Parameters: Pointer to device inode */ | |
2893 | /* Pointer to file structure */ | |
2894 | /* Command */ | |
2895 | /* Argument */ | |
2896 | /* Returns: Success or failure */ | |
2897 | /* */ | |
2898 | /* Description: */ | |
2899 | /* */ | |
2900 | /* */ | |
2901 | /******************************************************************************/ | |
47be36a2 AC |
2902 | static long |
2903 | ip2_ipl_ioctl (struct file *pFile, UINT cmd, ULONG arg ) | |
1da177e4 | 2904 | { |
47be36a2 | 2905 | unsigned int iplminor = iminor(pFile->f_path.dentry->d_inode); |
1da177e4 LT |
2906 | int rc = 0; |
2907 | void __user *argp = (void __user *)arg; | |
2908 | ULONG __user *pIndex = argp; | |
2909 | i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; | |
2910 | i2ChanStrPtr pCh; | |
2911 | ||
2912 | #ifdef IP2DEBUG_IPL | |
2913 | printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); | |
2914 | #endif | |
2915 | ||
613655fa | 2916 | mutex_lock(&ip2_mutex); |
47be36a2 | 2917 | |
1da177e4 LT |
2918 | switch ( iplminor ) { |
2919 | case 0: // IPL device | |
2920 | rc = -EINVAL; | |
2921 | break; | |
2922 | case 1: // Status dump | |
2923 | case 5: | |
2924 | case 9: | |
2925 | case 13: | |
2926 | switch ( cmd ) { | |
2927 | case 64: /* Driver - ip2stat */ | |
7d7b93c1 | 2928 | rc = put_user(-1, pIndex++ ); |
1da177e4 LT |
2929 | rc = put_user(irq_counter, pIndex++ ); |
2930 | rc = put_user(bh_counter, pIndex++ ); | |
2931 | break; | |
2932 | ||
2933 | case 65: /* Board - ip2stat */ | |
2934 | if ( pB ) { | |
2935 | rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); | |
cf1c63c3 | 2936 | rc = put_user(inb(pB->i2eStatus), |
1da177e4 LT |
2937 | (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); |
2938 | } else { | |
2939 | rc = -ENODEV; | |
2940 | } | |
2941 | break; | |
2942 | ||
2943 | default: | |
2944 | if (cmd < IP2_MAX_PORTS) { | |
2945 | pCh = DevTable[cmd]; | |
2946 | if ( pCh ) | |
2947 | { | |
2948 | rc = copy_to_user(argp, pCh, sizeof(i2ChanStr)); | |
05254a20 DC |
2949 | if (rc) |
2950 | rc = -EFAULT; | |
1da177e4 LT |
2951 | } else { |
2952 | rc = -ENODEV; | |
2953 | } | |
2954 | } else { | |
2955 | rc = -EINVAL; | |
2956 | } | |
2957 | } | |
2958 | break; | |
2959 | ||
2960 | case 2: // Ping device | |
2961 | rc = -EINVAL; | |
2962 | break; | |
2963 | case 3: // Trace device | |
def9391c AM |
2964 | /* |
2965 | * akpm: This used to write a whole bunch of function addresses | |
2966 | * to userspace, which generated lots of put_user() warnings. | |
2967 | * I killed it all. Just return "success" and don't do | |
2968 | * anything. | |
2969 | */ | |
2970 | if (cmd == 1) | |
2971 | rc = 0; | |
2972 | else | |
1da177e4 | 2973 | rc = -EINVAL; |
1da177e4 LT |
2974 | break; |
2975 | ||
2976 | default: | |
2977 | rc = -ENODEV; | |
2978 | break; | |
2979 | } | |
613655fa | 2980 | mutex_unlock(&ip2_mutex); |
1da177e4 LT |
2981 | return rc; |
2982 | } | |
2983 | ||
2984 | /******************************************************************************/ | |
2985 | /* Function: ip2_ipl_open() */ | |
2986 | /* Parameters: Pointer to device inode */ | |
2987 | /* Pointer to file structure */ | |
2988 | /* Returns: Success or failure */ | |
2989 | /* */ | |
2990 | /* Description: */ | |
2991 | /* */ | |
2992 | /* */ | |
2993 | /******************************************************************************/ | |
2994 | static int | |
2995 | ip2_ipl_open( struct inode *pInode, struct file *pFile ) | |
2996 | { | |
1da177e4 LT |
2997 | |
2998 | #ifdef IP2DEBUG_IPL | |
2999 | printk (KERN_DEBUG "IP2IPL: open\n" ); | |
3000 | #endif | |
1da177e4 LT |
3001 | return 0; |
3002 | } | |
1da177e4 LT |
3003 | |
3004 | static int | |
4a5cdb5b | 3005 | proc_ip2mem_show(struct seq_file *m, void *v) |
1da177e4 LT |
3006 | { |
3007 | i2eBordStrPtr pB; | |
3008 | i2ChanStrPtr pCh; | |
3009 | PTTY tty; | |
3010 | int i; | |
3011 | ||
1da177e4 LT |
3012 | #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" |
3013 | #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" | |
3014 | #define FMTLIN3 " 0x%04x 0x%04x rc flow\n" | |
3015 | ||
4a5cdb5b | 3016 | seq_printf(m,"\n"); |
1da177e4 LT |
3017 | |
3018 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
3019 | pB = i2BoardPtrTable[i]; | |
3020 | if ( pB ) { | |
4a5cdb5b AD |
3021 | seq_printf(m,"board %d:\n",i); |
3022 | seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n", | |
1da177e4 LT |
3023 | pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); |
3024 | } | |
3025 | } | |
3026 | ||
4a5cdb5b | 3027 | seq_printf(m,"#: tty flags, port flags, cflags, iflags\n"); |
1da177e4 | 3028 | for (i=0; i < IP2_MAX_PORTS; i++) { |
1da177e4 LT |
3029 | pCh = DevTable[i]; |
3030 | if (pCh) { | |
3031 | tty = pCh->pTTY; | |
3032 | if (tty && tty->count) { | |
4a5cdb5b | 3033 | seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags, |
1da177e4 LT |
3034 | tty->termios->c_cflag,tty->termios->c_iflag); |
3035 | ||
4a5cdb5b | 3036 | seq_printf(m,FMTLIN2, |
1da177e4 | 3037 | pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); |
4a5cdb5b | 3038 | seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room); |
1da177e4 LT |
3039 | } |
3040 | } | |
3041 | } | |
4a5cdb5b AD |
3042 | return 0; |
3043 | } | |
3044 | ||
3045 | static int proc_ip2mem_open(struct inode *inode, struct file *file) | |
3046 | { | |
3047 | return single_open(file, proc_ip2mem_show, NULL); | |
1da177e4 LT |
3048 | } |
3049 | ||
4a5cdb5b AD |
3050 | static const struct file_operations ip2mem_proc_fops = { |
3051 | .owner = THIS_MODULE, | |
3052 | .open = proc_ip2mem_open, | |
3053 | .read = seq_read, | |
3054 | .llseek = seq_lseek, | |
3055 | .release = single_release, | |
3056 | }; | |
3057 | ||
1da177e4 LT |
3058 | /* |
3059 | * This is the handler for /proc/tty/driver/ip2 | |
3060 | * | |
3061 | * This stretch of code has been largely plagerized from at least three | |
3062 | * different sources including ip2mkdev.c and a couple of other drivers. | |
3063 | * The bugs are all mine. :-) =mhw= | |
3064 | */ | |
cdda7cd9 | 3065 | static int ip2_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
3066 | { |
3067 | int i, j, box; | |
1da177e4 LT |
3068 | int boxes = 0; |
3069 | int ports = 0; | |
3070 | int tports = 0; | |
1da177e4 | 3071 | i2eBordStrPtr pB; |
cdda7cd9 | 3072 | char *sep; |
1da177e4 | 3073 | |
cdda7cd9 AD |
3074 | seq_printf(m, "ip2info: 1.0 driver: %s\n", pcVersion); |
3075 | seq_printf(m, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", | |
1da177e4 LT |
3076 | IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, |
3077 | IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); | |
3078 | ||
3079 | for( i = 0; i < IP2_MAX_BOARDS; ++i ) { | |
3080 | /* This need to be reset for a board by board count... */ | |
3081 | boxes = 0; | |
3082 | pB = i2BoardPtrTable[i]; | |
3083 | if( pB ) { | |
3084 | switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) | |
3085 | { | |
3086 | case POR_ID_FIIEX: | |
cdda7cd9 AD |
3087 | seq_printf(m, "Board %d: EX ports=", i); |
3088 | sep = ""; | |
1da177e4 LT |
3089 | for( box = 0; box < ABS_MAX_BOXES; ++box ) |
3090 | { | |
3091 | ports = 0; | |
3092 | ||
3093 | if( pB->i2eChannelMap[box] != 0 ) ++boxes; | |
3094 | for( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
3095 | { | |
3096 | if( pB->i2eChannelMap[box] & 1<< j ) { | |
3097 | ++ports; | |
3098 | } | |
3099 | } | |
cdda7cd9 AD |
3100 | seq_printf(m, "%s%d", sep, ports); |
3101 | sep = ","; | |
1da177e4 LT |
3102 | tports += ports; |
3103 | } | |
cdda7cd9 | 3104 | seq_printf(m, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8); |
1da177e4 LT |
3105 | break; |
3106 | ||
3107 | case POR_ID_II_4: | |
cdda7cd9 | 3108 | seq_printf(m, "Board %d: ISA-4 ports=4 boxes=1", i); |
1da177e4 LT |
3109 | tports = ports = 4; |
3110 | break; | |
3111 | ||
3112 | case POR_ID_II_8: | |
cdda7cd9 | 3113 | seq_printf(m, "Board %d: ISA-8-std ports=8 boxes=1", i); |
1da177e4 LT |
3114 | tports = ports = 8; |
3115 | break; | |
3116 | ||
3117 | case POR_ID_II_8R: | |
cdda7cd9 | 3118 | seq_printf(m, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i); |
1da177e4 LT |
3119 | tports = ports = 8; |
3120 | break; | |
3121 | ||
3122 | default: | |
cdda7cd9 | 3123 | seq_printf(m, "Board %d: unknown", i); |
1da177e4 LT |
3124 | /* Don't try and probe for minor numbers */ |
3125 | tports = ports = 0; | |
3126 | } | |
3127 | ||
3128 | } else { | |
3129 | /* Don't try and probe for minor numbers */ | |
cdda7cd9 | 3130 | seq_printf(m, "Board %d: vacant", i); |
1da177e4 LT |
3131 | tports = ports = 0; |
3132 | } | |
3133 | ||
3134 | if( tports ) { | |
cdda7cd9 AD |
3135 | seq_puts(m, " minors="); |
3136 | sep = ""; | |
1da177e4 LT |
3137 | for ( box = 0; box < ABS_MAX_BOXES; ++box ) |
3138 | { | |
3139 | for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) | |
3140 | { | |
3141 | if ( pB->i2eChannelMap[box] & (1 << j) ) | |
3142 | { | |
cdda7cd9 | 3143 | seq_printf(m, "%s%d", sep, |
1da177e4 LT |
3144 | j + ABS_BIGGEST_BOX * |
3145 | (box+i*ABS_MAX_BOXES)); | |
cdda7cd9 | 3146 | sep = ","; |
1da177e4 LT |
3147 | } |
3148 | } | |
3149 | } | |
1da177e4 | 3150 | } |
cdda7cd9 | 3151 | seq_putc(m, '\n'); |
1da177e4 | 3152 | } |
cdda7cd9 AD |
3153 | return 0; |
3154 | } | |
1da177e4 | 3155 | |
cdda7cd9 AD |
3156 | static int ip2_proc_open(struct inode *inode, struct file *file) |
3157 | { | |
3158 | return single_open(file, ip2_proc_show, NULL); | |
3159 | } | |
1da177e4 | 3160 | |
cdda7cd9 AD |
3161 | static const struct file_operations ip2_proc_fops = { |
3162 | .owner = THIS_MODULE, | |
3163 | .open = ip2_proc_open, | |
3164 | .read = seq_read, | |
3165 | .llseek = seq_lseek, | |
3166 | .release = single_release, | |
3167 | }; | |
1da177e4 LT |
3168 | |
3169 | /******************************************************************************/ | |
3170 | /* Function: ip2trace() */ | |
3171 | /* Parameters: Value to add to trace buffer */ | |
3172 | /* Returns: Nothing */ | |
3173 | /* */ | |
3174 | /* Description: */ | |
3175 | /* */ | |
3176 | /* */ | |
3177 | /******************************************************************************/ | |
3178 | #ifdef IP2DEBUG_TRACE | |
3179 | void | |
3180 | ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) | |
3181 | { | |
3182 | long flags; | |
3183 | unsigned long *pCode = &codes; | |
3184 | union ip2breadcrumb bc; | |
3185 | i2ChanStrPtr pCh; | |
3186 | ||
3187 | ||
3188 | tracebuf[tracestuff++] = jiffies; | |
3189 | if ( tracestuff == TRACEMAX ) { | |
3190 | tracestuff = 0; | |
3191 | } | |
3192 | if ( tracestuff == tracestrip ) { | |
3193 | if ( ++tracestrip == TRACEMAX ) { | |
3194 | tracestrip = 0; | |
3195 | } | |
3196 | ++tracewrap; | |
3197 | } | |
3198 | ||
3199 | bc.hdr.port = 0xff & pn; | |
3200 | bc.hdr.cat = cat; | |
3201 | bc.hdr.codes = (unsigned char)( codes & 0xff ); | |
3202 | bc.hdr.label = label; | |
3203 | tracebuf[tracestuff++] = bc.value; | |
3204 | ||
3205 | for (;;) { | |
3206 | if ( tracestuff == TRACEMAX ) { | |
3207 | tracestuff = 0; | |
3208 | } | |
3209 | if ( tracestuff == tracestrip ) { | |
3210 | if ( ++tracestrip == TRACEMAX ) { | |
3211 | tracestrip = 0; | |
3212 | } | |
3213 | ++tracewrap; | |
3214 | } | |
3215 | ||
3216 | if ( !codes-- ) | |
3217 | break; | |
3218 | ||
3219 | tracebuf[tracestuff++] = *++pCode; | |
3220 | } | |
3221 | } | |
3222 | #endif | |
3223 | ||
3224 | ||
3225 | MODULE_LICENSE("GPL"); | |
eb0e71c7 | 3226 | |
53139e36 | 3227 | static struct pci_device_id ip2main_pci_tbl[] __devinitdata __used = { |
eb0e71c7 CS |
3228 | { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) }, |
3229 | { } | |
3230 | }; | |
3231 | ||
3232 | MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl); | |
e6c4ef98 BH |
3233 | |
3234 | MODULE_FIRMWARE("intelliport2.bin"); |