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ip2: remove unneeded NULL check
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / char / ip2 / ip2main.c
blob8fa041eb8440aae0670a56be1de1f4fced57e352
1 /*
2 *
3 * (c) 1999 by Computone Corporation
4 *
5 ********************************************************************************
6 *
7 * PACKAGE: Linux tty Device Driver for IntelliPort family of multiport
8 * serial I/O controllers.
9 *
10 * DESCRIPTION: Mainline code for the device driver
11 *
12 *******************************************************************************/
13 // ToDo:
14 //
15 // Fix the immediate DSS_NOW problem.
16 // Work over the channel stats return logic in ip2_ipl_ioctl so they
17 // make sense for all 256 possible channels and so the user space
18 // utilities will compile and work properly.
19 //
20 // Done:
21 //
22 // 1.2.14 /\/\|=mhw=|\/\/
23 // Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts.
24 // Changed the definition of ip2trace to be more consistent with kernel style
25 // Thanks to Andreas Dilger <adilger@turbolabs.com> for these updates
26 //
27 // 1.2.13 /\/\|=mhw=|\/\/
28 // DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform
29 // to agreed devfs serial device naming convention.
30 //
31 // 1.2.12 /\/\|=mhw=|\/\/
32 // Cleaned up some remove queue cut and paste errors
33 //
34 // 1.2.11 /\/\|=mhw=|\/\/
35 // Clean up potential NULL pointer dereferences
36 // Clean up devfs registration
37 // Add kernel command line parsing for io and irq
38 // Compile defaults for io and irq are now set in ip2.c not ip2.h!
39 // Reworked poll_only hack for explicit parameter setting
40 // You must now EXPLICITLY set poll_only = 1 or set all irqs to 0
41 // Merged ip2_loadmain and old_ip2_init
42 // Converted all instances of interruptible_sleep_on into queue calls
43 // Most of these had no race conditions but better to clean up now
44 //
45 // 1.2.10 /\/\|=mhw=|\/\/
46 // Fixed the bottom half interrupt handler and enabled USE_IQI
47 // to split the interrupt handler into a formal top-half / bottom-half
48 // Fixed timing window on high speed processors that queued messages to
49 // the outbound mail fifo faster than the board could handle.
50 //
51 // 1.2.9
52 // Four box EX was barfing on >128k kmalloc, made structure smaller by
53 // reducing output buffer size
54 //
55 // 1.2.8
56 // Device file system support (MHW)
57 //
58 // 1.2.7
59 // Fixed
60 // Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
61 //
62 // 1.2.6
63 //Fixes DCD problems
64 // DCD was not reported when CLOCAL was set on call to TIOCMGET
65 //
66 //Enhancements:
67 // TIOCMGET requests and waits for status return
68 // No DSS interrupts enabled except for DCD when needed
69 //
70 // For internal use only
71 //
72 //#define IP2DEBUG_INIT
73 //#define IP2DEBUG_OPEN
74 //#define IP2DEBUG_WRITE
75 //#define IP2DEBUG_READ
76 //#define IP2DEBUG_IOCTL
77 //#define IP2DEBUG_IPL
78
79 //#define IP2DEBUG_TRACE
80 //#define DEBUG_FIFO
81
82 /************/
83 /* Includes */
84 /************/
85
86 #include <linux/ctype.h>
87 #include <linux/string.h>
88 #include <linux/fcntl.h>
89 #include <linux/errno.h>
90 #include <linux/module.h>
91 #include <linux/signal.h>
92 #include <linux/sched.h>
93 #include <linux/timer.h>
94 #include <linux/interrupt.h>
95 #include <linux/pci.h>
96 #include <linux/mm.h>
97 #include <linux/slab.h>
98 #include <linux/major.h>
99 #include <linux/wait.h>
100 #include <linux/device.h>
101 #include <linux/smp_lock.h>
102 #include <linux/firmware.h>
103 #include <linux/platform_device.h>
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>
124
125 #include <asm/uaccess.h>
126
127 #include "ip2types.h"
128 #include "ip2trace.h"
129 #include "ip2ioctl.h"
130 #include "ip2.h"
131 #include "i2ellis.h"
132 #include "i2lib.h"
133
134 /*****************
135 * /proc/ip2mem *
136 *****************/
137
138 #include <linux/proc_fs.h>
139 #include <linux/seq_file.h>
140
141 static const struct file_operations ip2mem_proc_fops;
142 static const struct file_operations ip2_proc_fops;
143
144 /********************/
145 /* Type Definitions */
146 /********************/
147
148 /*************/
149 /* Constants */
150 /*************/
151
152 /* String constants to identify ourselves */
153 static const char pcName[] = "Computone IntelliPort Plus multiport driver";
154 static const char pcVersion[] = "1.2.14";
155
156 /* String constants for port names */
157 static const char pcDriver_name[] = "ip2";
158 static const char pcIpl[] = "ip2ipl";
159
160 /***********************/
161 /* Function Prototypes */
162 /***********************/
163
164 /* Global module entry functions */
165
166 /* Private (static) functions */
167 static int ip2_open(PTTY, struct file *);
168 static void ip2_close(PTTY, struct file *);
169 static int ip2_write(PTTY, const unsigned char *, int);
170 static int ip2_putchar(PTTY, unsigned char);
171 static void ip2_flush_chars(PTTY);
172 static int ip2_write_room(PTTY);
173 static int ip2_chars_in_buf(PTTY);
174 static void ip2_flush_buffer(PTTY);
175 static int ip2_ioctl(PTTY, struct file *, UINT, ULONG);
176 static void ip2_set_termios(PTTY, struct ktermios *);
177 static void ip2_set_line_discipline(PTTY);
178 static void ip2_throttle(PTTY);
179 static void ip2_unthrottle(PTTY);
180 static void ip2_stop(PTTY);
181 static void ip2_start(PTTY);
182 static void ip2_hangup(PTTY);
183 static int ip2_tiocmget(struct tty_struct *tty, struct file *file);
184 static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
185 unsigned int set, unsigned int clear);
186
187 static void set_irq(int, int);
188 static void ip2_interrupt_bh(struct work_struct *work);
189 static irqreturn_t ip2_interrupt(int irq, void *dev_id);
190 static void ip2_poll(unsigned long arg);
191 static inline void service_all_boards(void);
192 static void do_input(struct work_struct *);
193 static void do_status(struct work_struct *);
194
195 static void ip2_wait_until_sent(PTTY,int);
196
197 static void set_params (i2ChanStrPtr, struct ktermios *);
198 static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
199 static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
200
201 static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
202 static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
203 static long ip2_ipl_ioctl(struct file *, UINT, ULONG);
204 static int ip2_ipl_open(struct inode *, struct file *);
205
206 static int DumpTraceBuffer(char __user *, int);
207 static int DumpFifoBuffer( char __user *, int);
208
209 static void ip2_init_board(int, const struct firmware *);
210 static unsigned short find_eisa_board(int);
211 static int ip2_setup(char *str);
212
213 /***************/
214 /* Static Data */
215 /***************/
216
217 static struct tty_driver *ip2_tty_driver;
218
219 /* Here, then is a table of board pointers which the interrupt routine should
220 * scan through to determine who it must service.
221 */
222 static unsigned short i2nBoards; // Number of boards here
223
224 static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
225
226 static i2ChanStrPtr DevTable[IP2_MAX_PORTS];
227 //DevTableMem just used to save addresses for kfree
228 static void *DevTableMem[IP2_MAX_BOARDS];
229
230 /* This is the driver descriptor for the ip2ipl device, which is used to
231 * download the loadware to the boards.
232 */
233 static const struct file_operations ip2_ipl = {
234 .owner = THIS_MODULE,
235 .read = ip2_ipl_read,
236 .write = ip2_ipl_write,
237 .unlocked_ioctl = ip2_ipl_ioctl,
238 .open = ip2_ipl_open,
239 };
240
241 static unsigned long irq_counter;
242 static unsigned long bh_counter;
243
244 // Use immediate queue to service interrupts
245 #define USE_IQI
246 //#define USE_IQ // PCI&2.2 needs work
247
248 /* The timer_list entry for our poll routine. If interrupt operation is not
249 * selected, the board is serviced periodically to see if anything needs doing.
250 */
251 #define POLL_TIMEOUT (jiffies + 1)
252 static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
253
254 #ifdef IP2DEBUG_TRACE
255 /* Trace (debug) buffer data */
256 #define TRACEMAX 1000
257 static unsigned long tracebuf[TRACEMAX];
258 static int tracestuff;
259 static int tracestrip;
260 static int tracewrap;
261 #endif
262
263 /**********/
264 /* Macros */
265 /**********/
266
267 #ifdef IP2DEBUG_OPEN
268 #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] ttyc=%d, modc=%x -> %s\n", \
269 tty->name,(pCh->flags), \
270 tty->count,/*GET_USE_COUNT(module)*/0,s)
271 #else
272 #define DBG_CNT(s)
273 #endif
274
275 /********/
276 /* Code */
277 /********/
278
279 #include "i2ellis.c" /* Extremely low-level interface services */
280 #include "i2cmd.c" /* Standard loadware command definitions */
281 #include "i2lib.c" /* High level interface services */
282
283 /* Configuration area for modprobe */
284
285 MODULE_AUTHOR("Doug McNash");
286 MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
287 MODULE_LICENSE("GPL");
288
289 #define MAX_CMD_STR 50
290
291 static int poll_only;
292 static char cmd[MAX_CMD_STR];
293
294 static int Eisa_irq;
295 static int Eisa_slot;
296
297 static int iindx;
298 static char rirqs[IP2_MAX_BOARDS];
299 static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
300
301 /* Note: Add compiled in defaults to these arrays, not to the structure
302 in ip2.h any longer. That structure WILL get overridden
303 by these values, or command line values, or insmod values!!! =mhw=
304 */
305 static int io[IP2_MAX_BOARDS];
306 static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 };
307
308 MODULE_AUTHOR("Doug McNash");
309 MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
310 module_param_array(irq, int, NULL, 0);
311 MODULE_PARM_DESC(irq, "Interrupts for IntelliPort Cards");
312 module_param_array(io, int, NULL, 0);
313 MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards");
314 module_param(poll_only, bool, 0);
315 MODULE_PARM_DESC(poll_only, "Do not use card interrupts");
316 module_param_string(ip2, cmd, MAX_CMD_STR, 0);
317 MODULE_PARM_DESC(ip2, "Contains module parameter passed with 'ip2='");
318
319 /* for sysfs class support */
320 static struct class *ip2_class;
321
322 /* Some functions to keep track of what irqs we have */
323
324 static int __init is_valid_irq(int irq)
325 {
326 int *i = Valid_Irqs;
327
328 while (*i != 0 && *i != irq)
329 i++;
330
331 return *i;
332 }
333
334 static void __init mark_requested_irq(char irq)
335 {
336 rirqs[iindx++] = irq;
337 }
338
339 static int __exit clear_requested_irq(char irq)
340 {
341 int i;
342 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
343 if (rirqs[i] == irq) {
344 rirqs[i] = 0;
345 return 1;
346 }
347 }
348 return 0;
349 }
350
351 static int have_requested_irq(char irq)
352 {
353 /* array init to zeros so 0 irq will not be requested as a side
354 * effect */
355 int i;
356 for (i = 0; i < IP2_MAX_BOARDS; ++i)
357 if (rirqs[i] == irq)
358 return 1;
359 return 0;
360 }
361
362 /******************************************************************************/
363 /* Function: cleanup_module() */
364 /* Parameters: None */
365 /* Returns: Nothing */
366 /* */
367 /* Description: */
368 /* This is a required entry point for an installable module. It has to return */
369 /* the device and the driver to a passive state. It should not be necessary */
370 /* to reset the board fully, especially as the loadware is downloaded */
371 /* externally rather than in the driver. We just want to disable the board */
372 /* and clear the loadware to a reset state. To allow this there has to be a */
373 /* way to detect whether the board has the loadware running at init time to */
374 /* handle subsequent installations of the driver. All memory allocated by the */
375 /* driver should be returned since it may be unloaded from memory. */
376 /******************************************************************************/
377 static void __exit ip2_cleanup_module(void)
378 {
379 int err;
380 int i;
381
382 del_timer_sync(&PollTimer);
383
384 /* Reset the boards we have. */
385 for (i = 0; i < IP2_MAX_BOARDS; i++)
386 if (i2BoardPtrTable[i])
387 iiReset(i2BoardPtrTable[i]);
388
389 /* The following is done at most once, if any boards were installed. */
390 for (i = 0; i < IP2_MAX_BOARDS; i++) {
391 if (i2BoardPtrTable[i]) {
392 iiResetDelay(i2BoardPtrTable[i]);
393 /* free io addresses and Tibet */
394 release_region(ip2config.addr[i], 8);
395 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
396 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR,
397 4 * i + 1));
398 }
399 /* Disable and remove interrupt handler. */
400 if (ip2config.irq[i] > 0 &&
401 have_requested_irq(ip2config.irq[i])) {
402 free_irq(ip2config.irq[i], (void *)&pcName);
403 clear_requested_irq(ip2config.irq[i]);
404 }
405 }
406 class_destroy(ip2_class);
407 err = tty_unregister_driver(ip2_tty_driver);
408 if (err)
409 printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n",
410 err);
411 put_tty_driver(ip2_tty_driver);
412 unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
413 remove_proc_entry("ip2mem", NULL);
414
415 /* free memory */
416 for (i = 0; i < IP2_MAX_BOARDS; i++) {
417 void *pB;
418 #ifdef CONFIG_PCI
419 if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
420 pci_disable_device(ip2config.pci_dev[i]);
421 pci_dev_put(ip2config.pci_dev[i]);
422 ip2config.pci_dev[i] = NULL;
423 }
424 #endif
425 pB = i2BoardPtrTable[i];
426 if (pB != NULL) {
427 kfree(pB);
428 i2BoardPtrTable[i] = NULL;
429 }
430 if (DevTableMem[i] != NULL) {
431 kfree(DevTableMem[i]);
432 DevTableMem[i] = NULL;
433 }
434 }
435 }
436 module_exit(ip2_cleanup_module);
437
438 static const struct tty_operations ip2_ops = {
439 .open = ip2_open,
440 .close = ip2_close,
441 .write = ip2_write,
442 .put_char = ip2_putchar,
443 .flush_chars = ip2_flush_chars,
444 .write_room = ip2_write_room,
445 .chars_in_buffer = ip2_chars_in_buf,
446 .flush_buffer = ip2_flush_buffer,
447 .ioctl = ip2_ioctl,
448 .throttle = ip2_throttle,
449 .unthrottle = ip2_unthrottle,
450 .set_termios = ip2_set_termios,
451 .set_ldisc = ip2_set_line_discipline,
452 .stop = ip2_stop,
453 .start = ip2_start,
454 .hangup = ip2_hangup,
455 .tiocmget = ip2_tiocmget,
456 .tiocmset = ip2_tiocmset,
457 .proc_fops = &ip2_proc_fops,
458 };
459
460 /******************************************************************************/
461 /* Function: ip2_loadmain() */
462 /* Parameters: irq, io from command line of insmod et. al. */
463 /* pointer to fip firmware and firmware size for boards */
464 /* Returns: Success (0) */
465 /* */
466 /* Description: */
467 /* This was the required entry point for all drivers (now in ip2.c) */
468 /* It performs all */
469 /* initialisation of the devices and driver structures, and registers itself */
470 /* with the relevant kernel modules. */
471 /******************************************************************************/
472 /* IRQF_DISABLED - if set blocks all interrupts else only this line */
473 /* IRQF_SHARED - for shared irq PCI or maybe EISA only */
474 /* SA_RANDOM - can be source for cert. random number generators */
475 #define IP2_SA_FLAGS 0
476
477
478 static const struct firmware *ip2_request_firmware(void)
479 {
480 struct platform_device *pdev;
481 const struct firmware *fw;
482
483 pdev = platform_device_register_simple("ip2", 0, NULL, 0);
484 if (IS_ERR(pdev)) {
485 printk(KERN_ERR "Failed to register platform device for ip2\n");
486 return NULL;
487 }
488 if (request_firmware(&fw, "intelliport2.bin", &pdev->dev)) {
489 printk(KERN_ERR "Failed to load firmware 'intelliport2.bin'\n");
490 fw = NULL;
491 }
492 platform_device_unregister(pdev);
493 return fw;
494 }
495
496 /******************************************************************************
497 * ip2_setup:
498 * str: kernel command line string
499 *
500 * Can't autoprobe the boards so user must specify configuration on
501 * kernel command line. Sane people build it modular but the others
502 * come here.
503 *
504 * Alternating pairs of io,irq for up to 4 boards.
505 * ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3
506 *
507 * io=0 => No board
508 * io=1 => PCI
509 * io=2 => EISA
510 * else => ISA I/O address
511 *
512 * irq=0 or invalid for ISA will revert to polling mode
513 *
514 * Any value = -1, do not overwrite compiled in value.
515 *
516 ******************************************************************************/
517 static int __init ip2_setup(char *str)
518 {
519 int j, ints[10]; /* 4 boards, 2 parameters + 2 */
520 unsigned int i;
521
522 str = get_options(str, ARRAY_SIZE(ints), ints);
523
524 for (i = 0, j = 1; i < 4; i++) {
525 if (j > ints[0])
526 break;
527 if (ints[j] >= 0)
528 io[i] = ints[j];
529 j++;
530 if (j > ints[0])
531 break;
532 if (ints[j] >= 0)
533 irq[i] = ints[j];
534 j++;
535 }
536 return 1;
537 }
538 __setup("ip2=", ip2_setup);
539
540 static int __init ip2_loadmain(void)
541 {
542 int i, j, box;
543 int err = 0;
544 i2eBordStrPtr pB = NULL;
545 int rc = -1;
546 const struct firmware *fw = NULL;
547 char *str;
548
549 str = cmd;
550
551 if (poll_only) {
552 /* Hard lock the interrupts to zero */
553 irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0;
554 }
555
556 /* Check module parameter with 'ip2=' has been passed or not */
557 if (!poll_only && (!strncmp(str, "ip2=", 4)))
558 ip2_setup(str);
559
560 ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0);
561
562 /* process command line arguments to modprobe or
563 insmod i.e. iop & irqp */
564 /* irqp and iop should ALWAYS be specified now... But we check
565 them individually just to be sure, anyways... */
566 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
567 ip2config.addr[i] = io[i];
568 if (irq[i] >= 0)
569 ip2config.irq[i] = irq[i];
570 else
571 ip2config.irq[i] = 0;
572 /* This is a little bit of a hack. If poll_only=1 on command
573 line back in ip2.c OR all IRQs on all specified boards are
574 explicitly set to 0, then drop to poll only mode and override
575 PCI or EISA interrupts. This superceeds the old hack of
576 triggering if all interrupts were zero (like da default).
577 Still a hack but less prone to random acts of terrorism.
578
579 What we really should do, now that the IRQ default is set
580 to -1, is to use 0 as a hard coded, do not probe.
581
582 /\/\|=mhw=|\/\/
583 */
584 poll_only |= irq[i];
585 }
586 poll_only = !poll_only;
587
588 /* Announce our presence */
589 printk(KERN_INFO "%s version %s\n", pcName, pcVersion);
590
591 ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
592 if (!ip2_tty_driver)
593 return -ENOMEM;
594
595 /* Initialise all the boards we can find (up to the maximum). */
596 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
597 switch (ip2config.addr[i]) {
598 case 0: /* skip this slot even if card is present */
599 break;
600 default: /* ISA */
601 /* ISA address must be specified */
602 if (ip2config.addr[i] < 0x100 ||
603 ip2config.addr[i] > 0x3f8) {
604 printk(KERN_ERR "IP2: Bad ISA board %d "
605 "address %x\n", i,
606 ip2config.addr[i]);
607 ip2config.addr[i] = 0;
608 break;
609 }
610 ip2config.type[i] = ISA;
611
612 /* Check for valid irq argument, set for polling if
613 * invalid */
614 if (ip2config.irq[i] &&
615 !is_valid_irq(ip2config.irq[i])) {
616 printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",
617 ip2config.irq[i]);
618 /* 0 is polling and is valid in that sense */
619 ip2config.irq[i] = 0;
620 }
621 break;
622 case PCI:
623 #ifdef CONFIG_PCI
624 {
625 struct pci_dev *pdev = NULL;
626 u32 addr;
627 int status;
628
629 pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE,
630 PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev);
631 if (pdev == NULL) {
632 ip2config.addr[i] = 0;
633 printk(KERN_ERR "IP2: PCI board %d not "
634 "found\n", i);
635 break;
636 }
637
638 if (pci_enable_device(pdev)) {
639 dev_err(&pdev->dev, "can't enable device\n");
640 goto out;
641 }
642 ip2config.type[i] = PCI;
643 ip2config.pci_dev[i] = pci_dev_get(pdev);
644 status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1,
645 &addr);
646 if (addr & 1)
647 ip2config.addr[i] = (USHORT)(addr & 0xfffe);
648 else
649 dev_err(&pdev->dev, "I/O address error\n");
650
651 ip2config.irq[i] = pdev->irq;
652 out:
653 pci_dev_put(pdev);
654 }
655 #else
656 printk(KERN_ERR "IP2: PCI card specified but PCI "
657 "support not enabled.\n");
658 printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI "
659 "defined!\n");
660 #endif /* CONFIG_PCI */
661 break;
662 case EISA:
663 ip2config.addr[i] = find_eisa_board(Eisa_slot + 1);
664 if (ip2config.addr[i] != 0) {
665 /* Eisa_irq set as side effect, boo */
666 ip2config.type[i] = EISA;
667 }
668 ip2config.irq[i] = Eisa_irq;
669 break;
670 } /* switch */
671 } /* for */
672
673 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
674 if (ip2config.addr[i]) {
675 pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL);
676 if (pB) {
677 i2BoardPtrTable[i] = pB;
678 iiSetAddress(pB, ip2config.addr[i],
679 ii2DelayTimer);
680 iiReset(pB);
681 } else
682 printk(KERN_ERR "IP2: board memory allocation "
683 "error\n");
684 }
685 }
686 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
687 pB = i2BoardPtrTable[i];
688 if (pB != NULL) {
689 iiResetDelay(pB);
690 break;
691 }
692 }
693 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
694 /* We don't want to request the firmware unless we have at
695 least one board */
696 if (i2BoardPtrTable[i] != NULL) {
697 if (!fw)
698 fw = ip2_request_firmware();
699 if (!fw)
700 break;
701 ip2_init_board(i, fw);
702 }
703 }
704 if (fw)
705 release_firmware(fw);
706
707 ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0);
708
709 ip2_tty_driver->owner = THIS_MODULE;
710 ip2_tty_driver->name = "ttyF";
711 ip2_tty_driver->driver_name = pcDriver_name;
712 ip2_tty_driver->major = IP2_TTY_MAJOR;
713 ip2_tty_driver->minor_start = 0;
714 ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
715 ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
716 ip2_tty_driver->init_termios = tty_std_termios;
717 ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
718 ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW |
719 TTY_DRIVER_DYNAMIC_DEV;
720 tty_set_operations(ip2_tty_driver, &ip2_ops);
721
722 ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0);
723
724 err = tty_register_driver(ip2_tty_driver);
725 if (err) {
726 printk(KERN_ERR "IP2: failed to register tty driver\n");
727 put_tty_driver(ip2_tty_driver);
728 return err; /* leaking resources */
729 }
730
731 err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl);
732 if (err) {
733 printk(KERN_ERR "IP2: failed to register IPL device (%d)\n",
734 err);
735 } else {
736 /* create the sysfs class */
737 ip2_class = class_create(THIS_MODULE, "ip2");
738 if (IS_ERR(ip2_class)) {
739 err = PTR_ERR(ip2_class);
740 goto out_chrdev;
741 }
742 }
743 /* Register the read_procmem thing */
744 if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) {
745 printk(KERN_ERR "IP2: failed to register read_procmem\n");
746 return -EIO; /* leaking resources */
747 }
748
749 ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0);
750 /* Register the interrupt handler or poll handler, depending upon the
751 * specified interrupt.
752 */
753
754 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
755 if (ip2config.addr[i] == 0)
756 continue;
757
758 pB = i2BoardPtrTable[i];
759 if (pB != NULL) {
760 device_create(ip2_class, NULL,
761 MKDEV(IP2_IPL_MAJOR, 4 * i),
762 NULL, "ipl%d", i);
763 device_create(ip2_class, NULL,
764 MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
765 NULL, "stat%d", i);
766
767 for (box = 0; box < ABS_MAX_BOXES; box++)
768 for (j = 0; j < ABS_BIGGEST_BOX; j++)
769 if (pB->i2eChannelMap[box] & (1 << j))
770 tty_register_device(
771 ip2_tty_driver,
772 j + ABS_BIGGEST_BOX *
773 (box+i*ABS_MAX_BOXES),
774 NULL);
775 }
776
777 if (poll_only) {
778 /* Poll only forces driver to only use polling and
779 to ignore the probed PCI or EISA interrupts. */
780 ip2config.irq[i] = CIR_POLL;
781 }
782 if (ip2config.irq[i] == CIR_POLL) {
783 retry:
784 if (!timer_pending(&PollTimer)) {
785 mod_timer(&PollTimer, POLL_TIMEOUT);
786 printk(KERN_INFO "IP2: polling\n");
787 }
788 } else {
789 if (have_requested_irq(ip2config.irq[i]))
790 continue;
791 rc = request_irq(ip2config.irq[i], ip2_interrupt,
792 IP2_SA_FLAGS |
793 (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
794 pcName, i2BoardPtrTable[i]);
795 if (rc) {
796 printk(KERN_ERR "IP2: request_irq failed: "
797 "error %d\n", rc);
798 ip2config.irq[i] = CIR_POLL;
799 printk(KERN_INFO "IP2: Polling %ld/sec.\n",
800 (POLL_TIMEOUT - jiffies));
801 goto retry;
802 }
803 mark_requested_irq(ip2config.irq[i]);
804 /* Initialise the interrupt handler bottom half
805 * (aka slih). */
806 }
807 }
808
809 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
810 if (i2BoardPtrTable[i]) {
811 /* set and enable board interrupt */
812 set_irq(i, ip2config.irq[i]);
813 }
814 }
815
816 ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0);
817
818 return 0;
819
820 out_chrdev:
821 unregister_chrdev(IP2_IPL_MAJOR, "ip2");
822 /* unregister and put tty here */
823 return err;
824 }
825 module_init(ip2_loadmain);
826
827 /******************************************************************************/
828 /* Function: ip2_init_board() */
829 /* Parameters: Index of board in configuration structure */
830 /* Returns: Success (0) */
831 /* */
832 /* Description: */
833 /* This function initializes the specified board. The loadware is copied to */
834 /* the board, the channel structures are initialized, and the board details */
835 /* are reported on the console. */
836 /******************************************************************************/
837 static void
838 ip2_init_board(int boardnum, const struct firmware *fw)
839 {
840 int i;
841 int nports = 0, nboxes = 0;
842 i2ChanStrPtr pCh;
843 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
844
845 if ( !iiInitialize ( pB ) ) {
846 printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
847 pB->i2eBase, pB->i2eError );
848 goto err_initialize;
849 }
850 printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
851 ip2config.addr[boardnum], ip2config.irq[boardnum] );
852
853 if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
854 printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
855 goto err_initialize;
856 }
857
858 if ( iiDownloadAll ( pB, (loadHdrStrPtr)fw->data, 1, fw->size )
859 != II_DOWN_GOOD ) {
860 printk ( KERN_ERR "IP2: failed to download loadware\n" );
861 goto err_release_region;
862 } else {
863 printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
864 pB->i2ePom.e.porVersion,
865 pB->i2ePom.e.porRevision,
866 pB->i2ePom.e.porSubRev, pB->i2eLVersion,
867 pB->i2eLRevision, pB->i2eLSub );
868 }
869
870 switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
871
872 default:
873 printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
874 pB->i2ePom.e.porID );
875 nports = 0;
876 goto err_release_region;
877 break;
878
879 case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
880 printk ( KERN_INFO "IP2: ISA-4\n" );
881 nports = 4;
882 break;
883
884 case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
885 printk ( KERN_INFO "IP2: ISA-8 std\n" );
886 nports = 8;
887 break;
888
889 case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
890 printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
891 nports = 8;
892 break;
893
894 case POR_ID_FIIEX: /* IntelliPort IIEX */
895 {
896 int portnum = IP2_PORTS_PER_BOARD * boardnum;
897 int box;
898
899 for( box = 0; box < ABS_MAX_BOXES; ++box ) {
900 if ( pB->i2eChannelMap[box] != 0 ) {
901 ++nboxes;
902 }
903 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
904 if ( pB->i2eChannelMap[box] & 1<< i ) {
905 ++nports;
906 }
907 }
908 }
909 DevTableMem[boardnum] = pCh =
910 kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
911 if ( !pCh ) {
912 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
913 goto err_release_region;
914 }
915 if ( !i2InitChannels( pB, nports, pCh ) ) {
916 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
917 kfree ( pCh );
918 goto err_release_region;
919 }
920 pB->i2eChannelPtr = &DevTable[portnum];
921 pB->i2eChannelCnt = ABS_MOST_PORTS;
922
923 for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
924 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
925 if ( pB->i2eChannelMap[box] & (1 << i) ) {
926 DevTable[portnum + i] = pCh;
927 pCh->port_index = portnum + i;
928 pCh++;
929 }
930 }
931 }
932 printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
933 nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
934 }
935 goto ex_exit;
936 }
937 DevTableMem[boardnum] = pCh =
938 kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
939 if ( !pCh ) {
940 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
941 goto err_release_region;
942 }
943 pB->i2eChannelPtr = pCh;
944 pB->i2eChannelCnt = nports;
945 if ( !i2InitChannels( pB, nports, pCh ) ) {
946 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
947 kfree ( pCh );
948 goto err_release_region;
949 }
950 pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
951
952 for( i = 0; i < pB->i2eChannelCnt; ++i ) {
953 DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
954 pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
955 pCh++;
956 }
957 ex_exit:
958 INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh);
959 return;
960
961 err_release_region:
962 release_region(ip2config.addr[boardnum], 8);
963 err_initialize:
964 kfree ( pB );
965 i2BoardPtrTable[boardnum] = NULL;
966 return;
967 }
968
969 /******************************************************************************/
970 /* Function: find_eisa_board ( int start_slot ) */
971 /* Parameters: First slot to check */
972 /* Returns: Address of EISA IntelliPort II controller */
973 /* */
974 /* Description: */
975 /* This function searches for an EISA IntelliPort controller, starting */
976 /* from the specified slot number. If the motherboard is not identified as an */
977 /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
978 /* it returns the base address of the controller. */
979 /******************************************************************************/
980 static unsigned short
981 find_eisa_board( int start_slot )
982 {
983 int i, j;
984 unsigned int idm = 0;
985 unsigned int idp = 0;
986 unsigned int base = 0;
987 unsigned int value;
988 int setup_address;
989 int setup_irq;
990 int ismine = 0;
991
992 /*
993 * First a check for an EISA motherboard, which we do by comparing the
994 * EISA ID registers for the system board and the first couple of slots.
995 * No slot ID should match the system board ID, but on an ISA or PCI
996 * machine the odds are that an empty bus will return similar values for
997 * each slot.
998 */
999 i = 0x0c80;
1000 value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
1001 for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
1002 j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
1003 if ( value == j )
1004 return 0;
1005 }
1006
1007 /*
1008 * OK, so we are inclined to believe that this is an EISA machine. Find
1009 * an IntelliPort controller.
1010 */
1011 for( i = start_slot; i < 16; i++ ) {
1012 base = i << 12;
1013 idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
1014 idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
1015 ismine = 0;
1016 if ( idm == 0x0e8e ) {
1017 if ( idp == 0x0281 || idp == 0x0218 ) {
1018 ismine = 1;
1019 } else if ( idp == 0x0282 || idp == 0x0283 ) {
1020 ismine = 3; /* Can do edge-trigger */
1021 }
1022 if ( ismine ) {
1023 Eisa_slot = i;
1024 break;
1025 }
1026 }
1027 }
1028 if ( !ismine )
1029 return 0;
1030
1031 /* It's some sort of EISA card, but at what address is it configured? */
1032
1033 setup_address = base + 0xc88;
1034 value = inb(base + 0xc86);
1035 setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
1036
1037 if ( (ismine & 2) && !(value & 0x10) ) {
1038 ismine = 1; /* Could be edging, but not */
1039 }
1040
1041 if ( Eisa_irq == 0 ) {
1042 Eisa_irq = setup_irq;
1043 } else if ( Eisa_irq != setup_irq ) {
1044 printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
1045 }
1046
1047 #ifdef IP2DEBUG_INIT
1048 printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
1049 base >> 12, idm, idp, setup_address);
1050 if ( Eisa_irq ) {
1051 printk(KERN_DEBUG ", Interrupt %d %s\n",
1052 setup_irq, (ismine & 2) ? "(edge)" : "(level)");
1053 } else {
1054 printk(KERN_DEBUG ", (polled)\n");
1055 }
1056 #endif
1057 return setup_address;
1058 }
1059
1060 /******************************************************************************/
1061 /* Function: set_irq() */
1062 /* Parameters: index to board in board table */
1063 /* IRQ to use */
1064 /* Returns: Success (0) */
1065 /* */
1066 /* Description: */
1067 /******************************************************************************/
1068 static void
1069 set_irq( int boardnum, int boardIrq )
1070 {
1071 unsigned char tempCommand[16];
1072 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
1073 unsigned long flags;
1074
1075 /*
1076 * Notify the boards they may generate interrupts. This is done by
1077 * sending an in-line command to channel 0 on each board. This is why
1078 * the channels have to be defined already. For each board, if the
1079 * interrupt has never been defined, we must do so NOW, directly, since
1080 * board will not send flow control or even give an interrupt until this
1081 * is done. If polling we must send 0 as the interrupt parameter.
1082 */
1083
1084 // We will get an interrupt here at the end of this function
1085
1086 iiDisableMailIrq(pB);
1087
1088 /* We build up the entire packet header. */
1089 CHANNEL_OF(tempCommand) = 0;
1090 PTYPE_OF(tempCommand) = PTYPE_INLINE;
1091 CMD_COUNT_OF(tempCommand) = 2;
1092 (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
1093 (CMD_OF(tempCommand))[1] = boardIrq;
1094 /*
1095 * Write to FIFO; don't bother to adjust fifo capacity for this, since
1096 * board will respond almost immediately after SendMail hit.
1097 */
1098 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1099 iiWriteBuf(pB, tempCommand, 4);
1100 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1101 pB->i2eUsingIrq = boardIrq;
1102 pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
1103
1104 /* Need to update number of boards before you enable mailbox int */
1105 ++i2nBoards;
1106
1107 CHANNEL_OF(tempCommand) = 0;
1108 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1109 CMD_COUNT_OF(tempCommand) = 6;
1110 (CMD_OF(tempCommand))[0] = 88; // SILO
1111 (CMD_OF(tempCommand))[1] = 64; // chars
1112 (CMD_OF(tempCommand))[2] = 32; // ms
1113
1114 (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK
1115 (CMD_OF(tempCommand))[4] = 64; // chars
1116
1117 (CMD_OF(tempCommand))[5] = 87; // HW_TEST
1118 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1119 iiWriteBuf(pB, tempCommand, 8);
1120 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1121
1122 CHANNEL_OF(tempCommand) = 0;
1123 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1124 CMD_COUNT_OF(tempCommand) = 1;
1125 (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */
1126 iiWriteBuf(pB, tempCommand, 3);
1127
1128 #ifdef XXX
1129 // enable heartbeat for test porpoises
1130 CHANNEL_OF(tempCommand) = 0;
1131 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1132 CMD_COUNT_OF(tempCommand) = 2;
1133 (CMD_OF(tempCommand))[0] = 44; /* get ping */
1134 (CMD_OF(tempCommand))[1] = 200; /* 200 ms */
1135 write_lock_irqsave(&pB->write_fifo_spinlock, flags);
1136 iiWriteBuf(pB, tempCommand, 4);
1137 write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
1138 #endif
1139
1140 iiEnableMailIrq(pB);
1141 iiSendPendingMail(pB);
1142 }
1143
1144 /******************************************************************************/
1145 /* Interrupt Handler Section */
1146 /******************************************************************************/
1147
1148 static inline void
1149 service_all_boards(void)
1150 {
1151 int i;
1152 i2eBordStrPtr pB;
1153
1154 /* Service every board on the list */
1155 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
1156 pB = i2BoardPtrTable[i];
1157 if ( pB ) {
1158 i2ServiceBoard( pB );
1159 }
1160 }
1161 }
1162
1163
1164 /******************************************************************************/
1165 /* Function: ip2_interrupt_bh(work) */
1166 /* Parameters: work - pointer to the board structure */
1167 /* Returns: Nothing */
1168 /* */
1169 /* Description: */
1170 /* Service the board in a bottom half interrupt handler and then */
1171 /* reenable the board's interrupts if it has an IRQ number */
1172 /* */
1173 /******************************************************************************/
1174 static void
1175 ip2_interrupt_bh(struct work_struct *work)
1176 {
1177 i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt);
1178 // pB better well be set or we have a problem! We can only get
1179 // here from the IMMEDIATE queue. Here, we process the boards.
1180 // Checking pB doesn't cost much and it saves us from the sanity checkers.
1181
1182 bh_counter++;
1183
1184 if ( pB ) {
1185 i2ServiceBoard( pB );
1186 if( pB->i2eUsingIrq ) {
1187 // Re-enable his interrupts
1188 iiEnableMailIrq(pB);
1189 }
1190 }
1191 }
1192
1193
1194 /******************************************************************************/
1195 /* Function: ip2_interrupt(int irq, void *dev_id) */
1196 /* Parameters: irq - interrupt number */
1197 /* pointer to optional device ID structure */
1198 /* Returns: Nothing */
1199 /* */
1200 /* Description: */
1201 /* */
1202 /* Our task here is simply to identify each board which needs servicing. */
1203 /* If we are queuing then, queue it to be serviced, and disable its irq */
1204 /* mask otherwise process the board directly. */
1205 /* */
1206 /* We could queue by IRQ but that just complicates things on both ends */
1207 /* with very little gain in performance (how many instructions does */
1208 /* it take to iterate on the immediate queue). */
1209 /* */
1210 /* */
1211 /******************************************************************************/
1212 static void
1213 ip2_irq_work(i2eBordStrPtr pB)
1214 {
1215 #ifdef USE_IQI
1216 if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
1217 // Disable his interrupt (will be enabled when serviced)
1218 // This is mostly to protect from reentrancy.
1219 iiDisableMailIrq(pB);
1220
1221 // Park the board on the immediate queue for processing.
1222 schedule_work(&pB->tqueue_interrupt);
1223
1224 // Make sure the immediate queue is flagged to fire.
1225 }
1226 #else
1227
1228 // We are using immediate servicing here. This sucks and can
1229 // cause all sorts of havoc with ppp and others. The failsafe
1230 // check on iiSendPendingMail could also throw a hairball.
1231
1232 i2ServiceBoard( pB );
1233
1234 #endif /* USE_IQI */
1235 }
1236
1237 static void
1238 ip2_polled_interrupt(void)
1239 {
1240 int i;
1241 i2eBordStrPtr pB;
1242
1243 ip2trace(ITRC_NO_PORT, ITRC_INTR, 99, 1, 0);
1244
1245 /* Service just the boards on the list using this irq */
1246 for( i = 0; i < i2nBoards; ++i ) {
1247 pB = i2BoardPtrTable[i];
1248
1249 // Only process those boards which match our IRQ.
1250 // IRQ = 0 for polled boards, we won't poll "IRQ" boards
1251
1252 if (pB && pB->i2eUsingIrq == 0)
1253 ip2_irq_work(pB);
1254 }
1255
1256 ++irq_counter;
1257
1258 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1259 }
1260
1261 static irqreturn_t
1262 ip2_interrupt(int irq, void *dev_id)
1263 {
1264 i2eBordStrPtr pB = dev_id;
1265
1266 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq );
1267
1268 ip2_irq_work(pB);
1269
1270 ++irq_counter;
1271
1272 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1273 return IRQ_HANDLED;
1274 }
1275
1276 /******************************************************************************/
1277 /* Function: ip2_poll(unsigned long arg) */
1278 /* Parameters: ? */
1279 /* Returns: Nothing */
1280 /* */
1281 /* Description: */
1282 /* This function calls the library routine i2ServiceBoard for each board in */
1283 /* the board table. This is used instead of the interrupt routine when polled */
1284 /* mode is specified. */
1285 /******************************************************************************/
1286 static void
1287 ip2_poll(unsigned long arg)
1288 {
1289 ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
1290
1291 // Just polled boards, IRQ = 0 will hit all non-interrupt boards.
1292 // It will NOT poll boards handled by hard interrupts.
1293 // The issue of queued BH interrupts is handled in ip2_interrupt().
1294 ip2_polled_interrupt();
1295
1296 mod_timer(&PollTimer, POLL_TIMEOUT);
1297
1298 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1299 }
1300
1301 static void do_input(struct work_struct *work)
1302 {
1303 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input);
1304 unsigned long flags;
1305
1306 ip2trace(CHANN, ITRC_INPUT, 21, 0 );
1307
1308 // Data input
1309 if ( pCh->pTTY != NULL ) {
1310 read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
1311 if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
1312 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1313 i2Input( pCh );
1314 } else
1315 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
1316 } else {
1317 ip2trace(CHANN, ITRC_INPUT, 22, 0 );
1318
1319 i2InputFlush( pCh );
1320 }
1321 }
1322
1323 // code duplicated from n_tty (ldisc)
1324 static inline void isig(int sig, struct tty_struct *tty, int flush)
1325 {
1326 /* FIXME: This is completely bogus */
1327 if (tty->pgrp)
1328 kill_pgrp(tty->pgrp, sig, 1);
1329 if (flush || !L_NOFLSH(tty)) {
1330 if ( tty->ldisc->ops->flush_buffer )
1331 tty->ldisc->ops->flush_buffer(tty);
1332 i2InputFlush( tty->driver_data );
1333 }
1334 }
1335
1336 static void do_status(struct work_struct *work)
1337 {
1338 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status);
1339 int status;
1340
1341 status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
1342
1343 ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
1344
1345 if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
1346 if ( (status & I2_BRK) ) {
1347 // code duplicated from n_tty (ldisc)
1348 if (I_IGNBRK(pCh->pTTY))
1349 goto skip_this;
1350 if (I_BRKINT(pCh->pTTY)) {
1351 isig(SIGINT, pCh->pTTY, 1);
1352 goto skip_this;
1353 }
1354 wake_up_interruptible(&pCh->pTTY->read_wait);
1355 }
1356 #ifdef NEVER_HAPPENS_AS_SETUP_XXX
1357 // and can't work because we don't know the_char
1358 // as the_char is reported on a separate path
1359 // The intelligent board does this stuff as setup
1360 {
1361 char brkf = TTY_NORMAL;
1362 unsigned char brkc = '\0';
1363 unsigned char tmp;
1364 if ( (status & I2_BRK) ) {
1365 brkf = TTY_BREAK;
1366 brkc = '\0';
1367 }
1368 else if (status & I2_PAR) {
1369 brkf = TTY_PARITY;
1370 brkc = the_char;
1371 } else if (status & I2_FRA) {
1372 brkf = TTY_FRAME;
1373 brkc = the_char;
1374 } else if (status & I2_OVR) {
1375 brkf = TTY_OVERRUN;
1376 brkc = the_char;
1377 }
1378 tmp = pCh->pTTY->real_raw;
1379 pCh->pTTY->real_raw = 0;
1380 pCh->pTTY->ldisc->ops.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
1381 pCh->pTTY->real_raw = tmp;
1382 }
1383 #endif /* NEVER_HAPPENS_AS_SETUP_XXX */
1384 }
1385 skip_this:
1386
1387 if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
1388 wake_up_interruptible(&pCh->delta_msr_wait);
1389
1390 if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
1391 if ( status & I2_DCD ) {
1392 if ( pCh->wopen ) {
1393 wake_up_interruptible ( &pCh->open_wait );
1394 }
1395 } else {
1396 if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
1397 tty_hangup( pCh->pTTY );
1398 }
1399 }
1400 }
1401 }
1402
1403 ip2trace (CHANN, ITRC_STATUS, 26, 0 );
1404 }
1405
1406 /******************************************************************************/
1407 /* Device Open/Close/Ioctl Entry Point Section */
1408 /******************************************************************************/
1409
1410 /******************************************************************************/
1411 /* Function: open_sanity_check() */
1412 /* Parameters: Pointer to tty structure */
1413 /* Pointer to file structure */
1414 /* Returns: Success or failure */
1415 /* */
1416 /* Description: */
1417 /* Verifies the structure magic numbers and cross links. */
1418 /******************************************************************************/
1419 #ifdef IP2DEBUG_OPEN
1420 static void
1421 open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
1422 {
1423 if ( pBrd->i2eValid != I2E_MAGIC ) {
1424 printk(KERN_ERR "IP2: invalid board structure\n" );
1425 } else if ( pBrd != pCh->pMyBord ) {
1426 printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
1427 pCh->pMyBord );
1428 } else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
1429 printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
1430 } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
1431 } else {
1432 printk(KERN_INFO "IP2: all pointers check out!\n" );
1433 }
1434 }
1435 #endif
1436
1437
1438 /******************************************************************************/
1439 /* Function: ip2_open() */
1440 /* Parameters: Pointer to tty structure */
1441 /* Pointer to file structure */
1442 /* Returns: Success or failure */
1443 /* */
1444 /* Description: (MANDATORY) */
1445 /* A successful device open has to run a gauntlet of checks before it */
1446 /* completes. After some sanity checking and pointer setup, the function */
1447 /* blocks until all conditions are satisfied. It then initialises the port to */
1448 /* the default characteristics and returns. */
1449 /******************************************************************************/
1450 static int
1451 ip2_open( PTTY tty, struct file *pFile )
1452 {
1453 wait_queue_t wait;
1454 int rc = 0;
1455 int do_clocal = 0;
1456 i2ChanStrPtr pCh = DevTable[tty->index];
1457
1458 ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
1459
1460 if ( pCh == NULL ) {
1461 return -ENODEV;
1462 }
1463 /* Setup pointer links in device and tty structures */
1464 pCh->pTTY = tty;
1465 tty->driver_data = pCh;
1466
1467 #ifdef IP2DEBUG_OPEN
1468 printk(KERN_DEBUG \
1469 "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
1470 tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
1471 open_sanity_check ( pCh, pCh->pMyBord );
1472 #endif
1473
1474 i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
1475 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1476 serviceOutgoingFifo( pCh->pMyBord );
1477
1478 /* Block here until the port is ready (per serial and istallion) */
1479 /*
1480 * 1. If the port is in the middle of closing wait for the completion
1481 * and then return the appropriate error.
1482 */
1483 init_waitqueue_entry(&wait, current);
1484 add_wait_queue(&pCh->close_wait, &wait);
1485 set_current_state( TASK_INTERRUPTIBLE );
1486
1487 if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
1488 if ( pCh->flags & ASYNC_CLOSING ) {
1489 tty_unlock();
1490 schedule();
1491 tty_lock();
1492 }
1493 if ( tty_hung_up_p(pFile) ) {
1494 set_current_state( TASK_RUNNING );
1495 remove_wait_queue(&pCh->close_wait, &wait);
1496 return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
1497 }
1498 }
1499 set_current_state( TASK_RUNNING );
1500 remove_wait_queue(&pCh->close_wait, &wait);
1501
1502 /*
1503 * 3. Handle a non-blocking open of a normal port.
1504 */
1505 if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
1506 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1507 goto noblock;
1508 }
1509 /*
1510 * 4. Now loop waiting for the port to be free and carrier present
1511 * (if required).
1512 */
1513 if ( tty->termios->c_cflag & CLOCAL )
1514 do_clocal = 1;
1515
1516 #ifdef IP2DEBUG_OPEN
1517 printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
1518 #endif
1519
1520 ++pCh->wopen;
1521
1522 init_waitqueue_entry(&wait, current);
1523 add_wait_queue(&pCh->open_wait, &wait);
1524
1525 for(;;) {
1526 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
1527 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1528 set_current_state( TASK_INTERRUPTIBLE );
1529 serviceOutgoingFifo( pCh->pMyBord );
1530 if ( tty_hung_up_p(pFile) ) {
1531 set_current_state( TASK_RUNNING );
1532 remove_wait_queue(&pCh->open_wait, &wait);
1533 return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
1534 }
1535 if (!(pCh->flags & ASYNC_CLOSING) &&
1536 (do_clocal || (pCh->dataSetIn & I2_DCD) )) {
1537 rc = 0;
1538 break;
1539 }
1540
1541 #ifdef IP2DEBUG_OPEN
1542 printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
1543 (pCh->flags & ASYNC_CLOSING)?"True":"False");
1544 printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
1545 #endif
1546 ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
1547 (pCh->flags & ASYNC_CLOSING) );
1548 /* check for signal */
1549 if (signal_pending(current)) {
1550 rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
1551 break;
1552 }
1553 tty_unlock();
1554 schedule();
1555 tty_lock();
1556 }
1557 set_current_state( TASK_RUNNING );
1558 remove_wait_queue(&pCh->open_wait, &wait);
1559
1560 --pCh->wopen; //why count?
1561
1562 ip2trace (CHANN, ITRC_OPEN, 4, 0 );
1563
1564 if (rc != 0 ) {
1565 return rc;
1566 }
1567 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1568
1569 noblock:
1570
1571 /* first open - Assign termios structure to port */
1572 if ( tty->count == 1 ) {
1573 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1574 /* Now we must send the termios settings to the loadware */
1575 set_params( pCh, NULL );
1576 }
1577
1578 /*
1579 * Now set any i2lib options. These may go away if the i2lib code ends
1580 * up rolled into the mainline.
1581 */
1582 pCh->channelOptions |= CO_NBLOCK_WRITE;
1583
1584 #ifdef IP2DEBUG_OPEN
1585 printk (KERN_DEBUG "IP2: open completed\n" );
1586 #endif
1587 serviceOutgoingFifo( pCh->pMyBord );
1588
1589 ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
1590
1591 return 0;
1592 }
1593
1594 /******************************************************************************/
1595 /* Function: ip2_close() */
1596 /* Parameters: Pointer to tty structure */
1597 /* Pointer to file structure */
1598 /* Returns: Nothing */
1599 /* */
1600 /* Description: */
1601 /* */
1602 /* */
1603 /******************************************************************************/
1604 static void
1605 ip2_close( PTTY tty, struct file *pFile )
1606 {
1607 i2ChanStrPtr pCh = tty->driver_data;
1608
1609 if ( !pCh ) {
1610 return;
1611 }
1612
1613 ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
1614
1615 #ifdef IP2DEBUG_OPEN
1616 printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
1617 #endif
1618
1619 if ( tty_hung_up_p ( pFile ) ) {
1620
1621 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
1622
1623 return;
1624 }
1625 if ( tty->count > 1 ) { /* not the last close */
1626
1627 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
1628
1629 return;
1630 }
1631 pCh->flags |= ASYNC_CLOSING; // last close actually
1632
1633 tty->closing = 1;
1634
1635 if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
1636 /*
1637 * Before we drop DTR, make sure the transmitter has completely drained.
1638 * This uses an timeout, after which the close
1639 * completes.
1640 */
1641 ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
1642 }
1643 /*
1644 * At this point we stop accepting input. Here we flush the channel
1645 * input buffer which will allow the board to send up more data. Any
1646 * additional input is tossed at interrupt/poll time.
1647 */
1648 i2InputFlush( pCh );
1649
1650 /* disable DSS reporting */
1651 i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
1652 CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1653 if (tty->termios->c_cflag & HUPCL) {
1654 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
1655 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1656 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1657 }
1658
1659 serviceOutgoingFifo ( pCh->pMyBord );
1660
1661 tty_ldisc_flush(tty);
1662 tty_driver_flush_buffer(tty);
1663 tty->closing = 0;
1664
1665 pCh->pTTY = NULL;
1666
1667 if (pCh->wopen) {
1668 if (pCh->ClosingDelay) {
1669 msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
1670 }
1671 wake_up_interruptible(&pCh->open_wait);
1672 }
1673
1674 pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1675 wake_up_interruptible(&pCh->close_wait);
1676
1677 #ifdef IP2DEBUG_OPEN
1678 DBG_CNT("ip2_close: after wakeups--");
1679 #endif
1680
1681
1682 ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
1683
1684 return;
1685 }
1686
1687 /******************************************************************************/
1688 /* Function: ip2_hangup() */
1689 /* Parameters: Pointer to tty structure */
1690 /* Returns: Nothing */
1691 /* */
1692 /* Description: */
1693 /* */
1694 /* */
1695 /******************************************************************************/
1696 static void
1697 ip2_hangup ( PTTY tty )
1698 {
1699 i2ChanStrPtr pCh = tty->driver_data;
1700
1701 if( !pCh ) {
1702 return;
1703 }
1704
1705 ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
1706
1707 ip2_flush_buffer(tty);
1708
1709 /* disable DSS reporting */
1710
1711 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
1712 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1713 if ( (tty->termios->c_cflag & HUPCL) ) {
1714 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
1715 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1716 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1717 }
1718 i2QueueCommands(PTYPE_INLINE, pCh, 1, 3,
1719 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1720 serviceOutgoingFifo ( pCh->pMyBord );
1721
1722 wake_up_interruptible ( &pCh->delta_msr_wait );
1723
1724 pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
1725 pCh->pTTY = NULL;
1726 wake_up_interruptible ( &pCh->open_wait );
1727
1728 ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
1729 }
1730
1731 /******************************************************************************/
1732 /******************************************************************************/
1733 /* Device Output Section */
1734 /******************************************************************************/
1735 /******************************************************************************/
1736
1737 /******************************************************************************/
1738 /* Function: ip2_write() */
1739 /* Parameters: Pointer to tty structure */
1740 /* Flag denoting data is in user (1) or kernel (0) space */
1741 /* Pointer to data */
1742 /* Number of bytes to write */
1743 /* Returns: Number of bytes actually written */
1744 /* */
1745 /* Description: (MANDATORY) */
1746 /* */
1747 /* */
1748 /******************************************************************************/
1749 static int
1750 ip2_write( PTTY tty, const unsigned char *pData, int count)
1751 {
1752 i2ChanStrPtr pCh = tty->driver_data;
1753 int bytesSent = 0;
1754 unsigned long flags;
1755
1756 ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
1757
1758 /* Flush out any buffered data left over from ip2_putchar() calls. */
1759 ip2_flush_chars( tty );
1760
1761 /* This is the actual move bit. Make sure it does what we need!!!!! */
1762 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1763 bytesSent = i2Output( pCh, pData, count);
1764 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1765
1766 ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
1767
1768 return bytesSent > 0 ? bytesSent : 0;
1769 }
1770
1771 /******************************************************************************/
1772 /* Function: ip2_putchar() */
1773 /* Parameters: Pointer to tty structure */
1774 /* Character to write */
1775 /* Returns: Nothing */
1776 /* */
1777 /* Description: */
1778 /* */
1779 /* */
1780 /******************************************************************************/
1781 static int
1782 ip2_putchar( PTTY tty, unsigned char ch )
1783 {
1784 i2ChanStrPtr pCh = tty->driver_data;
1785 unsigned long flags;
1786
1787 // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
1788
1789 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1790 pCh->Pbuf[pCh->Pbuf_stuff++] = ch;
1791 if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) {
1792 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1793 ip2_flush_chars( tty );
1794 } else
1795 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1796 return 1;
1797
1798 // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
1799 }
1800
1801 /******************************************************************************/
1802 /* Function: ip2_flush_chars() */
1803 /* Parameters: Pointer to tty structure */
1804 /* Returns: Nothing */
1805 /* */
1806 /* Description: */
1807 /* */
1808 /******************************************************************************/
1809 static void
1810 ip2_flush_chars( PTTY tty )
1811 {
1812 int strip;
1813 i2ChanStrPtr pCh = tty->driver_data;
1814 unsigned long flags;
1815
1816 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1817 if ( pCh->Pbuf_stuff ) {
1818
1819 // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
1820
1821 //
1822 // We may need to restart i2Output if it does not fullfill this request
1823 //
1824 strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff);
1825 if ( strip != pCh->Pbuf_stuff ) {
1826 memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
1827 }
1828 pCh->Pbuf_stuff -= strip;
1829 }
1830 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1831 }
1832
1833 /******************************************************************************/
1834 /* Function: ip2_write_room() */
1835 /* Parameters: Pointer to tty structure */
1836 /* Returns: Number of bytes that the driver can accept */
1837 /* */
1838 /* Description: */
1839 /* */
1840 /******************************************************************************/
1841 static int
1842 ip2_write_room ( PTTY tty )
1843 {
1844 int bytesFree;
1845 i2ChanStrPtr pCh = tty->driver_data;
1846 unsigned long flags;
1847
1848 read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1849 bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
1850 read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1851
1852 ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
1853
1854 return ((bytesFree > 0) ? bytesFree : 0);
1855 }
1856
1857 /******************************************************************************/
1858 /* Function: ip2_chars_in_buf() */
1859 /* Parameters: Pointer to tty structure */
1860 /* Returns: Number of bytes queued for transmission */
1861 /* */
1862 /* Description: */
1863 /* */
1864 /* */
1865 /******************************************************************************/
1866 static int
1867 ip2_chars_in_buf ( PTTY tty )
1868 {
1869 i2ChanStrPtr pCh = tty->driver_data;
1870 int rc;
1871 unsigned long flags;
1872
1873 ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
1874
1875 #ifdef IP2DEBUG_WRITE
1876 printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
1877 pCh->Obuf_char_count + pCh->Pbuf_stuff,
1878 pCh->Obuf_char_count, pCh->Pbuf_stuff );
1879 #endif
1880 read_lock_irqsave(&pCh->Obuf_spinlock, flags);
1881 rc = pCh->Obuf_char_count;
1882 read_unlock_irqrestore(&pCh->Obuf_spinlock, flags);
1883 read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1884 rc += pCh->Pbuf_stuff;
1885 read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1886 return rc;
1887 }
1888
1889 /******************************************************************************/
1890 /* Function: ip2_flush_buffer() */
1891 /* Parameters: Pointer to tty structure */
1892 /* Returns: Nothing */
1893 /* */
1894 /* Description: */
1895 /* */
1896 /* */
1897 /******************************************************************************/
1898 static void
1899 ip2_flush_buffer( PTTY tty )
1900 {
1901 i2ChanStrPtr pCh = tty->driver_data;
1902 unsigned long flags;
1903
1904 ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
1905
1906 #ifdef IP2DEBUG_WRITE
1907 printk (KERN_DEBUG "IP2: flush buffer\n" );
1908 #endif
1909 write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
1910 pCh->Pbuf_stuff = 0;
1911 write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
1912 i2FlushOutput( pCh );
1913 ip2_owake(tty);
1914
1915 ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
1916
1917 }
1918
1919 /******************************************************************************/
1920 /* Function: ip2_wait_until_sent() */
1921 /* Parameters: Pointer to tty structure */
1922 /* Timeout for wait. */
1923 /* Returns: Nothing */
1924 /* */
1925 /* Description: */
1926 /* This function is used in place of the normal tty_wait_until_sent, which */
1927 /* only waits for the driver buffers to be empty (or rather, those buffers */
1928 /* reported by chars_in_buffer) which doesn't work for IP2 due to the */
1929 /* indeterminate number of bytes buffered on the board. */
1930 /******************************************************************************/
1931 static void
1932 ip2_wait_until_sent ( PTTY tty, int timeout )
1933 {
1934 int i = jiffies;
1935 i2ChanStrPtr pCh = tty->driver_data;
1936
1937 tty_wait_until_sent(tty, timeout );
1938 if ( (i = timeout - (jiffies -i)) > 0)
1939 i2DrainOutput( pCh, i );
1940 }
1941
1942 /******************************************************************************/
1943 /******************************************************************************/
1944 /* Device Input Section */
1945 /******************************************************************************/
1946 /******************************************************************************/
1947
1948 /******************************************************************************/
1949 /* Function: ip2_throttle() */
1950 /* Parameters: Pointer to tty structure */
1951 /* Returns: Nothing */
1952 /* */
1953 /* Description: */
1954 /* */
1955 /* */
1956 /******************************************************************************/
1957 static void
1958 ip2_throttle ( PTTY tty )
1959 {
1960 i2ChanStrPtr pCh = tty->driver_data;
1961
1962 #ifdef IP2DEBUG_READ
1963 printk (KERN_DEBUG "IP2: throttle\n" );
1964 #endif
1965 /*
1966 * Signal the poll/interrupt handlers not to forward incoming data to
1967 * the line discipline. This will cause the buffers to fill up in the
1968 * library and thus cause the library routines to send the flow control
1969 * stuff.
1970 */
1971 pCh->throttled = 1;
1972 }
1973
1974 /******************************************************************************/
1975 /* Function: ip2_unthrottle() */
1976 /* Parameters: Pointer to tty structure */
1977 /* Returns: Nothing */
1978 /* */
1979 /* Description: */
1980 /* */
1981 /* */
1982 /******************************************************************************/
1983 static void
1984 ip2_unthrottle ( PTTY tty )
1985 {
1986 i2ChanStrPtr pCh = tty->driver_data;
1987 unsigned long flags;
1988
1989 #ifdef IP2DEBUG_READ
1990 printk (KERN_DEBUG "IP2: unthrottle\n" );
1991 #endif
1992
1993 /* Pass incoming data up to the line discipline again. */
1994 pCh->throttled = 0;
1995 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1996 serviceOutgoingFifo( pCh->pMyBord );
1997 read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
1998 if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
1999 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
2000 #ifdef IP2DEBUG_READ
2001 printk (KERN_DEBUG "i2Input called from unthrottle\n" );
2002 #endif
2003 i2Input( pCh );
2004 } else
2005 read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
2006 }
2007
2008 static void
2009 ip2_start ( PTTY tty )
2010 {
2011 i2ChanStrPtr pCh = DevTable[tty->index];
2012
2013 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
2014 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
2015 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
2016 #ifdef IP2DEBUG_WRITE
2017 printk (KERN_DEBUG "IP2: start tx\n" );
2018 #endif
2019 }
2020
2021 static void
2022 ip2_stop ( PTTY tty )
2023 {
2024 i2ChanStrPtr pCh = DevTable[tty->index];
2025
2026 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
2027 #ifdef IP2DEBUG_WRITE
2028 printk (KERN_DEBUG "IP2: stop tx\n" );
2029 #endif
2030 }
2031
2032 /******************************************************************************/
2033 /* Device Ioctl Section */
2034 /******************************************************************************/
2035
2036 static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
2037 {
2038 i2ChanStrPtr pCh = DevTable[tty->index];
2039 #ifdef ENABLE_DSSNOW
2040 wait_queue_t wait;
2041 #endif
2042
2043 if (pCh == NULL)
2044 return -ENODEV;
2045
2046 /*
2047 FIXME - the following code is causing a NULL pointer dereference in
2048 2.3.51 in an interrupt handler. It's suppose to prompt the board
2049 to return the DSS signal status immediately. Why doesn't it do
2050 the same thing in 2.2.14?
2051 */
2052
2053 /* This thing is still busted in the 1.2.12 driver on 2.4.x
2054 and even hoses the serial console so the oops can be trapped.
2055 /\/\|=mhw=|\/\/ */
2056
2057 #ifdef ENABLE_DSSNOW
2058 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
2059
2060 init_waitqueue_entry(&wait, current);
2061 add_wait_queue(&pCh->dss_now_wait, &wait);
2062 set_current_state( TASK_INTERRUPTIBLE );
2063
2064 serviceOutgoingFifo( pCh->pMyBord );
2065
2066 schedule();
2067
2068 set_current_state( TASK_RUNNING );
2069 remove_wait_queue(&pCh->dss_now_wait, &wait);
2070
2071 if (signal_pending(current)) {
2072 return -EINTR;
2073 }
2074 #endif
2075 return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
2076 | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
2077 | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0)
2078 | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0)
2079 | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0)
2080 | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0);
2081 }
2082
2083 static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
2084 unsigned int set, unsigned int clear)
2085 {
2086 i2ChanStrPtr pCh = DevTable[tty->index];
2087
2088 if (pCh == NULL)
2089 return -ENODEV;
2090
2091 if (set & TIOCM_RTS) {
2092 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
2093 pCh->dataSetOut |= I2_RTS;
2094 }
2095 if (set & TIOCM_DTR) {
2096 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
2097 pCh->dataSetOut |= I2_DTR;
2098 }
2099
2100 if (clear & TIOCM_RTS) {
2101 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
2102 pCh->dataSetOut &= ~I2_RTS;
2103 }
2104 if (clear & TIOCM_DTR) {
2105 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
2106 pCh->dataSetOut &= ~I2_DTR;
2107 }
2108 serviceOutgoingFifo( pCh->pMyBord );
2109 return 0;
2110 }
2111
2112 /******************************************************************************/
2113 /* Function: ip2_ioctl() */
2114 /* Parameters: Pointer to tty structure */
2115 /* Pointer to file structure */
2116 /* Command */
2117 /* Argument */
2118 /* Returns: Success or failure */
2119 /* */
2120 /* Description: */
2121 /* */
2122 /* */
2123 /******************************************************************************/
2124 static int
2125 ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
2126 {
2127 wait_queue_t wait;
2128 i2ChanStrPtr pCh = DevTable[tty->index];
2129 i2eBordStrPtr pB;
2130 struct async_icount cprev, cnow; /* kernel counter temps */
2131 struct serial_icounter_struct __user *p_cuser;
2132 int rc = 0;
2133 unsigned long flags;
2134 void __user *argp = (void __user *)arg;
2135
2136 if ( pCh == NULL )
2137 return -ENODEV;
2138
2139 pB = pCh->pMyBord;
2140
2141 ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
2142
2143 #ifdef IP2DEBUG_IOCTL
2144 printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
2145 #endif
2146
2147 switch(cmd) {
2148 case TIOCGSERIAL:
2149
2150 ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
2151
2152 rc = get_serial_info(pCh, argp);
2153 if (rc)
2154 return rc;
2155 break;
2156
2157 case TIOCSSERIAL:
2158
2159 ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
2160
2161 rc = set_serial_info(pCh, argp);
2162 if (rc)
2163 return rc;
2164 break;
2165
2166 case TCXONC:
2167 rc = tty_check_change(tty);
2168 if (rc)
2169 return rc;
2170 switch (arg) {
2171 case TCOOFF:
2172 //return -ENOIOCTLCMD;
2173 break;
2174 case TCOON:
2175 //return -ENOIOCTLCMD;
2176 break;
2177 case TCIOFF:
2178 if (STOP_CHAR(tty) != __DISABLED_CHAR) {
2179 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2180 CMD_XMIT_NOW(STOP_CHAR(tty)));
2181 }
2182 break;
2183 case TCION:
2184 if (START_CHAR(tty) != __DISABLED_CHAR) {
2185 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2186 CMD_XMIT_NOW(START_CHAR(tty)));
2187 }
2188 break;
2189 default:
2190 return -EINVAL;
2191 }
2192 return 0;
2193
2194 case TCSBRK: /* SVID version: non-zero arg --> no break */
2195 rc = tty_check_change(tty);
2196
2197 ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
2198
2199 if (!rc) {
2200 ip2_wait_until_sent(tty,0);
2201 if (!arg) {
2202 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
2203 serviceOutgoingFifo( pCh->pMyBord );
2204 }
2205 }
2206 break;
2207
2208 case TCSBRKP: /* support for POSIX tcsendbreak() */
2209 rc = tty_check_change(tty);
2210
2211 ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
2212
2213 if (!rc) {
2214 ip2_wait_until_sent(tty,0);
2215 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2216 CMD_SEND_BRK(arg ? arg*100 : 250));
2217 serviceOutgoingFifo ( pCh->pMyBord );
2218 }
2219 break;
2220
2221 case TIOCGSOFTCAR:
2222
2223 ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
2224
2225 rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
2226 if (rc)
2227 return rc;
2228 break;
2229
2230 case TIOCSSOFTCAR:
2231
2232 ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
2233
2234 rc = get_user(arg,(unsigned long __user *) argp);
2235 if (rc)
2236 return rc;
2237 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
2238 | (arg ? CLOCAL : 0));
2239
2240 break;
2241
2242 /*
2243 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask
2244 * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS
2245 * for masking). Caller should use TIOCGICOUNT to see which one it was
2246 */
2247 case TIOCMIWAIT:
2248 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2249 cprev = pCh->icount; /* note the counters on entry */
2250 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2251 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4,
2252 CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP);
2253 init_waitqueue_entry(&wait, current);
2254 add_wait_queue(&pCh->delta_msr_wait, &wait);
2255 set_current_state( TASK_INTERRUPTIBLE );
2256
2257 serviceOutgoingFifo( pCh->pMyBord );
2258 for(;;) {
2259 ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
2260
2261 schedule();
2262
2263 ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
2264
2265 /* see if a signal did it */
2266 if (signal_pending(current)) {
2267 rc = -ERESTARTSYS;
2268 break;
2269 }
2270 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2271 cnow = pCh->icount; /* atomic copy */
2272 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2273 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2274 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
2275 rc = -EIO; /* no change => rc */
2276 break;
2277 }
2278 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2279 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2280 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2281 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2282 rc = 0;
2283 break;
2284 }
2285 cprev = cnow;
2286 }
2287 set_current_state( TASK_RUNNING );
2288 remove_wait_queue(&pCh->delta_msr_wait, &wait);
2289
2290 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3,
2291 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
2292 if ( ! (pCh->flags & ASYNC_CHECK_CD)) {
2293 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
2294 }
2295 serviceOutgoingFifo( pCh->pMyBord );
2296 return rc;
2297 break;
2298
2299 /*
2300 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2301 * Return: write counters to the user passed counter struct
2302 * NB: both 1->0 and 0->1 transitions are counted except for RI where
2303 * only 0->1 is counted. The controller is quite capable of counting
2304 * both, but this done to preserve compatibility with the standard
2305 * serial driver.
2306 */
2307 case TIOCGICOUNT:
2308 ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
2309
2310 write_lock_irqsave(&pB->read_fifo_spinlock, flags);
2311 cnow = pCh->icount;
2312 write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
2313 p_cuser = argp;
2314 rc = put_user(cnow.cts, &p_cuser->cts);
2315 rc = put_user(cnow.dsr, &p_cuser->dsr);
2316 rc = put_user(cnow.rng, &p_cuser->rng);
2317 rc = put_user(cnow.dcd, &p_cuser->dcd);
2318 rc = put_user(cnow.rx, &p_cuser->rx);
2319 rc = put_user(cnow.tx, &p_cuser->tx);
2320 rc = put_user(cnow.frame, &p_cuser->frame);
2321 rc = put_user(cnow.overrun, &p_cuser->overrun);
2322 rc = put_user(cnow.parity, &p_cuser->parity);
2323 rc = put_user(cnow.brk, &p_cuser->brk);
2324 rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
2325 break;
2326
2327 /*
2328 * The rest are not supported by this driver. By returning -ENOIOCTLCMD they
2329 * will be passed to the line discipline for it to handle.
2330 */
2331 case TIOCSERCONFIG:
2332 case TIOCSERGWILD:
2333 case TIOCSERGETLSR:
2334 case TIOCSERSWILD:
2335 case TIOCSERGSTRUCT:
2336 case TIOCSERGETMULTI:
2337 case TIOCSERSETMULTI:
2338
2339 default:
2340 ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
2341
2342 rc = -ENOIOCTLCMD;
2343 break;
2344 }
2345
2346 ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
2347
2348 return rc;
2349 }
2350
2351 /******************************************************************************/
2352 /* Function: GetSerialInfo() */
2353 /* Parameters: Pointer to channel structure */
2354 /* Pointer to old termios structure */
2355 /* Returns: Nothing */
2356 /* */
2357 /* Description: */
2358 /* This is to support the setserial command, and requires processing of the */
2359 /* standard Linux serial structure. */
2360 /******************************************************************************/
2361 static int
2362 get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
2363 {
2364 struct serial_struct tmp;
2365
2366 memset ( &tmp, 0, sizeof(tmp) );
2367 tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
2368 if (BID_HAS_654(tmp.type)) {
2369 tmp.type = PORT_16650;
2370 } else {
2371 tmp.type = PORT_CIRRUS;
2372 }
2373 tmp.line = pCh->port_index;
2374 tmp.port = pCh->pMyBord->i2eBase;
2375 tmp.irq = ip2config.irq[pCh->port_index/64];
2376 tmp.flags = pCh->flags;
2377 tmp.baud_base = pCh->BaudBase;
2378 tmp.close_delay = pCh->ClosingDelay;
2379 tmp.closing_wait = pCh->ClosingWaitTime;
2380 tmp.custom_divisor = pCh->BaudDivisor;
2381 return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
2382 }
2383
2384 /******************************************************************************/
2385 /* Function: SetSerialInfo() */
2386 /* Parameters: Pointer to channel structure */
2387 /* Pointer to old termios structure */
2388 /* Returns: Nothing */
2389 /* */
2390 /* Description: */
2391 /* This function provides support for setserial, which uses the TIOCSSERIAL */
2392 /* ioctl. Not all setserial parameters are relevant. If the user attempts to */
2393 /* change the IRQ, address or type of the port the ioctl fails. */
2394 /******************************************************************************/
2395 static int
2396 set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
2397 {
2398 struct serial_struct ns;
2399 int old_flags, old_baud_divisor;
2400
2401 if (copy_from_user(&ns, new_info, sizeof (ns)))
2402 return -EFAULT;
2403
2404 /*
2405 * We don't allow setserial to change IRQ, board address, type or baud
2406 * base. Also line nunber as such is meaningless but we use it for our
2407 * array index so it is fixed also.
2408 */
2409 if ( (ns.irq != ip2config.irq[pCh->port_index])
2410 || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase)))
2411 || (ns.baud_base != pCh->BaudBase)
2412 || (ns.line != pCh->port_index) ) {
2413 return -EINVAL;
2414 }
2415
2416 old_flags = pCh->flags;
2417 old_baud_divisor = pCh->BaudDivisor;
2418
2419 if ( !capable(CAP_SYS_ADMIN) ) {
2420 if ( ( ns.close_delay != pCh->ClosingDelay ) ||
2421 ( (ns.flags & ~ASYNC_USR_MASK) !=
2422 (pCh->flags & ~ASYNC_USR_MASK) ) ) {
2423 return -EPERM;
2424 }
2425
2426 pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
2427 (ns.flags & ASYNC_USR_MASK);
2428 pCh->BaudDivisor = ns.custom_divisor;
2429 } else {
2430 pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
2431 (ns.flags & ASYNC_FLAGS);
2432 pCh->BaudDivisor = ns.custom_divisor;
2433 pCh->ClosingDelay = ns.close_delay * HZ/100;
2434 pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
2435 }
2436
2437 if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
2438 || (old_baud_divisor != pCh->BaudDivisor) ) {
2439 // Invalidate speed and reset parameters
2440 set_params( pCh, NULL );
2441 }
2442
2443 return 0;
2444 }
2445
2446 /******************************************************************************/
2447 /* Function: ip2_set_termios() */
2448 /* Parameters: Pointer to tty structure */
2449 /* Pointer to old termios structure */
2450 /* Returns: Nothing */
2451 /* */
2452 /* Description: */
2453 /* */
2454 /* */
2455 /******************************************************************************/
2456 static void
2457 ip2_set_termios( PTTY tty, struct ktermios *old_termios )
2458 {
2459 i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
2460
2461 #ifdef IP2DEBUG_IOCTL
2462 printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
2463 #endif
2464
2465 set_params( pCh, old_termios );
2466 }
2467
2468 /******************************************************************************/
2469 /* Function: ip2_set_line_discipline() */
2470 /* Parameters: Pointer to tty structure */
2471 /* Returns: Nothing */
2472 /* */
2473 /* Description: Does nothing */
2474 /* */
2475 /* */
2476 /******************************************************************************/
2477 static void
2478 ip2_set_line_discipline ( PTTY tty )
2479 {
2480 #ifdef IP2DEBUG_IOCTL
2481 printk (KERN_DEBUG "IP2: set line discipline\n" );
2482 #endif
2483
2484 ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
2485
2486 }
2487
2488 /******************************************************************************/
2489 /* Function: SetLine Characteristics() */
2490 /* Parameters: Pointer to channel structure */
2491 /* Returns: Nothing */
2492 /* */
2493 /* Description: */
2494 /* This routine is called to update the channel structure with the new line */
2495 /* characteristics, and send the appropriate commands to the board when they */
2496 /* change. */
2497 /******************************************************************************/
2498 static void
2499 set_params( i2ChanStrPtr pCh, struct ktermios *o_tios )
2500 {
2501 tcflag_t cflag, iflag, lflag;
2502 char stop_char, start_char;
2503 struct ktermios dummy;
2504
2505 lflag = pCh->pTTY->termios->c_lflag;
2506 cflag = pCh->pTTY->termios->c_cflag;
2507 iflag = pCh->pTTY->termios->c_iflag;
2508
2509 if (o_tios == NULL) {
2510 dummy.c_lflag = ~lflag;
2511 dummy.c_cflag = ~cflag;
2512 dummy.c_iflag = ~iflag;
2513 o_tios = &dummy;
2514 }
2515
2516 {
2517 switch ( cflag & CBAUD ) {
2518 case B0:
2519 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
2520 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
2521 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
2522 pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
2523 goto service_it;
2524 break;
2525 case B38400:
2526 /*
2527 * This is the speed that is overloaded with all the other high
2528 * speeds, depending upon the flag settings.
2529 */
2530 if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
2531 pCh->speed = CBR_57600;
2532 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
2533 pCh->speed = CBR_115200;
2534 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
2535 pCh->speed = CBR_C1;
2536 } else {
2537 pCh->speed = CBR_38400;
2538 }
2539 break;
2540 case B50: pCh->speed = CBR_50; break;
2541 case B75: pCh->speed = CBR_75; break;
2542 case B110: pCh->speed = CBR_110; break;
2543 case B134: pCh->speed = CBR_134; break;
2544 case B150: pCh->speed = CBR_150; break;
2545 case B200: pCh->speed = CBR_200; break;
2546 case B300: pCh->speed = CBR_300; break;
2547 case B600: pCh->speed = CBR_600; break;
2548 case B1200: pCh->speed = CBR_1200; break;
2549 case B1800: pCh->speed = CBR_1800; break;
2550 case B2400: pCh->speed = CBR_2400; break;
2551 case B4800: pCh->speed = CBR_4800; break;
2552 case B9600: pCh->speed = CBR_9600; break;
2553 case B19200: pCh->speed = CBR_19200; break;
2554 case B57600: pCh->speed = CBR_57600; break;
2555 case B115200: pCh->speed = CBR_115200; break;
2556 case B153600: pCh->speed = CBR_153600; break;
2557 case B230400: pCh->speed = CBR_230400; break;
2558 case B307200: pCh->speed = CBR_307200; break;
2559 case B460800: pCh->speed = CBR_460800; break;
2560 case B921600: pCh->speed = CBR_921600; break;
2561 default: pCh->speed = CBR_9600; break;
2562 }
2563 if ( pCh->speed == CBR_C1 ) {
2564 // Process the custom speed parameters.
2565 int bps = pCh->BaudBase / pCh->BaudDivisor;
2566 if ( bps == 921600 ) {
2567 pCh->speed = CBR_921600;
2568 } else {
2569 bps = bps/10;
2570 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
2571 }
2572 }
2573 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
2574
2575 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
2576 pCh->dataSetOut |= (I2_DTR | I2_RTS);
2577 }
2578 if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag))
2579 {
2580 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2581 CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
2582 }
2583 if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag))
2584 {
2585 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2586 CMD_SETPAR(
2587 (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
2588 )
2589 );
2590 }
2591 /* byte size and parity */
2592 if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag))
2593 {
2594 int datasize;
2595 switch ( cflag & CSIZE ) {
2596 case CS5: datasize = CSZ_5; break;
2597 case CS6: datasize = CSZ_6; break;
2598 case CS7: datasize = CSZ_7; break;
2599 case CS8: datasize = CSZ_8; break;
2600 default: datasize = CSZ_5; break; /* as per serial.c */
2601 }
2602 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
2603 }
2604 /* Process CTS flow control flag setting */
2605 if ( (cflag & CRTSCTS) ) {
2606 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2607 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
2608 } else {
2609 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2610 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
2611 }
2612 //
2613 // Process XON/XOFF flow control flags settings
2614 //
2615 stop_char = STOP_CHAR(pCh->pTTY);
2616 start_char = START_CHAR(pCh->pTTY);
2617
2618 //////////// can't be \000
2619 if (stop_char == __DISABLED_CHAR )
2620 {
2621 stop_char = ~__DISABLED_CHAR;
2622 }
2623 if (start_char == __DISABLED_CHAR )
2624 {
2625 start_char = ~__DISABLED_CHAR;
2626 }
2627 /////////////////////////////////
2628
2629 if ( o_tios->c_cc[VSTART] != start_char )
2630 {
2631 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
2632 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
2633 }
2634 if ( o_tios->c_cc[VSTOP] != stop_char )
2635 {
2636 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
2637 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
2638 }
2639 if (stop_char == __DISABLED_CHAR )
2640 {
2641 stop_char = ~__DISABLED_CHAR; //TEST123
2642 goto no_xoff;
2643 }
2644 if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF)))
2645 {
2646 if ( iflag & IXOFF ) { // Enable XOFF output flow control
2647 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
2648 } else { // Disable XOFF output flow control
2649 no_xoff:
2650 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
2651 }
2652 }
2653 if (start_char == __DISABLED_CHAR )
2654 {
2655 goto no_xon;
2656 }
2657 if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY)))
2658 {
2659 if ( iflag & IXON ) {
2660 if ( iflag & IXANY ) { // Enable XON/XANY output flow control
2661 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
2662 } else { // Enable XON output flow control
2663 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
2664 }
2665 } else { // Disable XON output flow control
2666 no_xon:
2667 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
2668 }
2669 }
2670 if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) )
2671 {
2672 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2673 CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
2674 }
2675 if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) )
2676 {
2677 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2678 CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
2679 }
2680
2681 if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR))
2682 ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) )
2683 {
2684 char brkrpt = 0;
2685 char parrpt = 0;
2686
2687 if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
2688 /* Ignore breaks altogether */
2689 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
2690 } else {
2691 if ( iflag & BRKINT ) {
2692 if ( iflag & PARMRK ) {
2693 brkrpt = 0x0a; // exception an inline triple
2694 } else {
2695 brkrpt = 0x1a; // exception and NULL
2696 }
2697 brkrpt |= 0x04; // flush input
2698 } else {
2699 if ( iflag & PARMRK ) {
2700 brkrpt = 0x0b; //POSIX triple \0377 \0 \0
2701 } else {
2702 brkrpt = 0x01; // Null only
2703 }
2704 }
2705 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
2706 }
2707
2708 if (iflag & IGNPAR) {
2709 parrpt = 0x20;
2710 /* would be 2 for not cirrus bug */
2711 /* would be 0x20 cept for cirrus bug */
2712 } else {
2713 if ( iflag & PARMRK ) {
2714 /*
2715 * Replace error characters with 3-byte sequence (\0377,\0,char)
2716 */
2717 parrpt = 0x04 ;
2718 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
2719 } else {
2720 parrpt = 0x03;
2721 }
2722 }
2723 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
2724 }
2725 if (cflag & CLOCAL) {
2726 // Status reporting fails for DCD if this is off
2727 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
2728 pCh->flags &= ~ASYNC_CHECK_CD;
2729 } else {
2730 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
2731 pCh->flags |= ASYNC_CHECK_CD;
2732 }
2733
2734 service_it:
2735 i2DrainOutput( pCh, 100 );
2736 }
2737
2738 /******************************************************************************/
2739 /* IPL Device Section */
2740 /******************************************************************************/
2741
2742 /******************************************************************************/
2743 /* Function: ip2_ipl_read() */
2744 /* Parameters: Pointer to device inode */
2745 /* Pointer to file structure */
2746 /* Pointer to data */
2747 /* Number of bytes to read */
2748 /* Returns: Success or failure */
2749 /* */
2750 /* Description: Ugly */
2751 /* */
2752 /* */
2753 /******************************************************************************/
2754
2755 static
2756 ssize_t
2757 ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
2758 {
2759 unsigned int minor = iminor(pFile->f_path.dentry->d_inode);
2760 int rc = 0;
2761
2762 #ifdef IP2DEBUG_IPL
2763 printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
2764 #endif
2765
2766 switch( minor ) {
2767 case 0: // IPL device
2768 rc = -EINVAL;
2769 break;
2770 case 1: // Status dump
2771 rc = -EINVAL;
2772 break;
2773 case 2: // Ping device
2774 rc = -EINVAL;
2775 break;
2776 case 3: // Trace device
2777 rc = DumpTraceBuffer ( pData, count );
2778 break;
2779 case 4: // Trace device
2780 rc = DumpFifoBuffer ( pData, count );
2781 break;
2782 default:
2783 rc = -ENODEV;
2784 break;
2785 }
2786 return rc;
2787 }
2788
2789 static int
2790 DumpFifoBuffer ( char __user *pData, int count )
2791 {
2792 #ifdef DEBUG_FIFO
2793 int rc;
2794 rc = copy_to_user(pData, DBGBuf, count);
2795
2796 printk(KERN_DEBUG "Last index %d\n", I );
2797
2798 return count;
2799 #endif /* DEBUG_FIFO */
2800 return 0;
2801 }
2802
2803 static int
2804 DumpTraceBuffer ( char __user *pData, int count )
2805 {
2806 #ifdef IP2DEBUG_TRACE
2807 int rc;
2808 int dumpcount;
2809 int chunk;
2810 int *pIndex = (int __user *)pData;
2811
2812 if ( count < (sizeof(int) * 6) ) {
2813 return -EIO;
2814 }
2815 rc = put_user(tracewrap, pIndex );
2816 rc = put_user(TRACEMAX, ++pIndex );
2817 rc = put_user(tracestrip, ++pIndex );
2818 rc = put_user(tracestuff, ++pIndex );
2819 pData += sizeof(int) * 6;
2820 count -= sizeof(int) * 6;
2821
2822 dumpcount = tracestuff - tracestrip;
2823 if ( dumpcount < 0 ) {
2824 dumpcount += TRACEMAX;
2825 }
2826 if ( dumpcount > count ) {
2827 dumpcount = count;
2828 }
2829 chunk = TRACEMAX - tracestrip;
2830 if ( dumpcount > chunk ) {
2831 rc = copy_to_user(pData, &tracebuf[tracestrip],
2832 chunk * sizeof(tracebuf[0]) );
2833 pData += chunk * sizeof(tracebuf[0]);
2834 tracestrip = 0;
2835 chunk = dumpcount - chunk;
2836 } else {
2837 chunk = dumpcount;
2838 }
2839 rc = copy_to_user(pData, &tracebuf[tracestrip],
2840 chunk * sizeof(tracebuf[0]) );
2841 tracestrip += chunk;
2842 tracewrap = 0;
2843
2844 rc = put_user(tracestrip, ++pIndex );
2845 rc = put_user(tracestuff, ++pIndex );
2846
2847 return dumpcount;
2848 #else
2849 return 0;
2850 #endif
2851 }
2852
2853 /******************************************************************************/
2854 /* Function: ip2_ipl_write() */
2855 /* Parameters: */
2856 /* Pointer to file structure */
2857 /* Pointer to data */
2858 /* Number of bytes to write */
2859 /* Returns: Success or failure */
2860 /* */
2861 /* Description: */
2862 /* */
2863 /* */
2864 /******************************************************************************/
2865 static ssize_t
2866 ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
2867 {
2868 #ifdef IP2DEBUG_IPL
2869 printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
2870 #endif
2871 return 0;
2872 }
2873
2874 /******************************************************************************/
2875 /* Function: ip2_ipl_ioctl() */
2876 /* Parameters: Pointer to device inode */
2877 /* Pointer to file structure */
2878 /* Command */
2879 /* Argument */
2880 /* Returns: Success or failure */
2881 /* */
2882 /* Description: */
2883 /* */
2884 /* */
2885 /******************************************************************************/
2886 static long
2887 ip2_ipl_ioctl (struct file *pFile, UINT cmd, ULONG arg )
2888 {
2889 unsigned int iplminor = iminor(pFile->f_path.dentry->d_inode);
2890 int rc = 0;
2891 void __user *argp = (void __user *)arg;
2892 ULONG __user *pIndex = argp;
2893 i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
2894 i2ChanStrPtr pCh;
2895
2896 #ifdef IP2DEBUG_IPL
2897 printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
2898 #endif
2899
2900 lock_kernel();
2901
2902 switch ( iplminor ) {
2903 case 0: // IPL device
2904 rc = -EINVAL;
2905 break;
2906 case 1: // Status dump
2907 case 5:
2908 case 9:
2909 case 13:
2910 switch ( cmd ) {
2911 case 64: /* Driver - ip2stat */
2912 rc = put_user(-1, pIndex++ );
2913 rc = put_user(irq_counter, pIndex++ );
2914 rc = put_user(bh_counter, pIndex++ );
2915 break;
2916
2917 case 65: /* Board - ip2stat */
2918 if ( pB ) {
2919 rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
2920 rc = put_user(inb(pB->i2eStatus),
2921 (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
2922 } else {
2923 rc = -ENODEV;
2924 }
2925 break;
2926
2927 default:
2928 if (cmd < IP2_MAX_PORTS) {
2929 pCh = DevTable[cmd];
2930 if ( pCh )
2931 {
2932 rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
2933 } else {
2934 rc = -ENODEV;
2935 }
2936 } else {
2937 rc = -EINVAL;
2938 }
2939 }
2940 break;
2941
2942 case 2: // Ping device
2943 rc = -EINVAL;
2944 break;
2945 case 3: // Trace device
2946 /*
2947 * akpm: This used to write a whole bunch of function addresses
2948 * to userspace, which generated lots of put_user() warnings.
2949 * I killed it all. Just return "success" and don't do
2950 * anything.
2951 */
2952 if (cmd == 1)
2953 rc = 0;
2954 else
2955 rc = -EINVAL;
2956 break;
2957
2958 default:
2959 rc = -ENODEV;
2960 break;
2961 }
2962 unlock_kernel();
2963 return rc;
2964 }
2965
2966 /******************************************************************************/
2967 /* Function: ip2_ipl_open() */
2968 /* Parameters: Pointer to device inode */
2969 /* Pointer to file structure */
2970 /* Returns: Success or failure */
2971 /* */
2972 /* Description: */
2973 /* */
2974 /* */
2975 /******************************************************************************/
2976 static int
2977 ip2_ipl_open( struct inode *pInode, struct file *pFile )
2978 {
2979
2980 #ifdef IP2DEBUG_IPL
2981 printk (KERN_DEBUG "IP2IPL: open\n" );
2982 #endif
2983 cycle_kernel_lock();
2984 return 0;
2985 }
2986
2987 static int
2988 proc_ip2mem_show(struct seq_file *m, void *v)
2989 {
2990 i2eBordStrPtr pB;
2991 i2ChanStrPtr pCh;
2992 PTTY tty;
2993 int i;
2994
2995 #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n"
2996 #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n"
2997 #define FMTLIN3 " 0x%04x 0x%04x rc flow\n"
2998
2999 seq_printf(m,"\n");
3000
3001 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
3002 pB = i2BoardPtrTable[i];
3003 if ( pB ) {
3004 seq_printf(m,"board %d:\n",i);
3005 seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n",
3006 pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
3007 }
3008 }
3009
3010 seq_printf(m,"#: tty flags, port flags, cflags, iflags\n");
3011 for (i=0; i < IP2_MAX_PORTS; i++) {
3012 pCh = DevTable[i];
3013 if (pCh) {
3014 tty = pCh->pTTY;
3015 if (tty && tty->count) {
3016 seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags,
3017 tty->termios->c_cflag,tty->termios->c_iflag);
3018
3019 seq_printf(m,FMTLIN2,
3020 pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
3021 seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room);
3022 }
3023 }
3024 }
3025 return 0;
3026 }
3027
3028 static int proc_ip2mem_open(struct inode *inode, struct file *file)
3029 {
3030 return single_open(file, proc_ip2mem_show, NULL);
3031 }
3032
3033 static const struct file_operations ip2mem_proc_fops = {
3034 .owner = THIS_MODULE,
3035 .open = proc_ip2mem_open,
3036 .read = seq_read,
3037 .llseek = seq_lseek,
3038 .release = single_release,
3039 };
3040
3041 /*
3042 * This is the handler for /proc/tty/driver/ip2
3043 *
3044 * This stretch of code has been largely plagerized from at least three
3045 * different sources including ip2mkdev.c and a couple of other drivers.
3046 * The bugs are all mine. :-) =mhw=
3047 */
3048 static int ip2_proc_show(struct seq_file *m, void *v)
3049 {
3050 int i, j, box;
3051 int boxes = 0;
3052 int ports = 0;
3053 int tports = 0;
3054 i2eBordStrPtr pB;
3055 char *sep;
3056
3057 seq_printf(m, "ip2info: 1.0 driver: %s\n", pcVersion);
3058 seq_printf(m, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
3059 IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
3060 IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
3061
3062 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
3063 /* This need to be reset for a board by board count... */
3064 boxes = 0;
3065 pB = i2BoardPtrTable[i];
3066 if( pB ) {
3067 switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED )
3068 {
3069 case POR_ID_FIIEX:
3070 seq_printf(m, "Board %d: EX ports=", i);
3071 sep = "";
3072 for( box = 0; box < ABS_MAX_BOXES; ++box )
3073 {
3074 ports = 0;
3075
3076 if( pB->i2eChannelMap[box] != 0 ) ++boxes;
3077 for( j = 0; j < ABS_BIGGEST_BOX; ++j )
3078 {
3079 if( pB->i2eChannelMap[box] & 1<< j ) {
3080 ++ports;
3081 }
3082 }
3083 seq_printf(m, "%s%d", sep, ports);
3084 sep = ",";
3085 tports += ports;
3086 }
3087 seq_printf(m, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8);
3088 break;
3089
3090 case POR_ID_II_4:
3091 seq_printf(m, "Board %d: ISA-4 ports=4 boxes=1", i);
3092 tports = ports = 4;
3093 break;
3094
3095 case POR_ID_II_8:
3096 seq_printf(m, "Board %d: ISA-8-std ports=8 boxes=1", i);
3097 tports = ports = 8;
3098 break;
3099
3100 case POR_ID_II_8R:
3101 seq_printf(m, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i);
3102 tports = ports = 8;
3103 break;
3104
3105 default:
3106 seq_printf(m, "Board %d: unknown", i);
3107 /* Don't try and probe for minor numbers */
3108 tports = ports = 0;
3109 }
3110
3111 } else {
3112 /* Don't try and probe for minor numbers */
3113 seq_printf(m, "Board %d: vacant", i);
3114 tports = ports = 0;
3115 }
3116
3117 if( tports ) {
3118 seq_puts(m, " minors=");
3119 sep = "";
3120 for ( box = 0; box < ABS_MAX_BOXES; ++box )
3121 {
3122 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
3123 {
3124 if ( pB->i2eChannelMap[box] & (1 << j) )
3125 {
3126 seq_printf(m, "%s%d", sep,
3127 j + ABS_BIGGEST_BOX *
3128 (box+i*ABS_MAX_BOXES));
3129 sep = ",";
3130 }
3131 }
3132 }
3133 }
3134 seq_putc(m, '\n');
3135 }
3136 return 0;
3137 }
3138
3139 static int ip2_proc_open(struct inode *inode, struct file *file)
3140 {
3141 return single_open(file, ip2_proc_show, NULL);
3142 }
3143
3144 static const struct file_operations ip2_proc_fops = {
3145 .owner = THIS_MODULE,
3146 .open = ip2_proc_open,
3147 .read = seq_read,
3148 .llseek = seq_lseek,
3149 .release = single_release,
3150 };
3151
3152 /******************************************************************************/
3153 /* Function: ip2trace() */
3154 /* Parameters: Value to add to trace buffer */
3155 /* Returns: Nothing */
3156 /* */
3157 /* Description: */
3158 /* */
3159 /* */
3160 /******************************************************************************/
3161 #ifdef IP2DEBUG_TRACE
3162 void
3163 ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
3164 {
3165 long flags;
3166 unsigned long *pCode = &codes;
3167 union ip2breadcrumb bc;
3168 i2ChanStrPtr pCh;
3169
3170
3171 tracebuf[tracestuff++] = jiffies;
3172 if ( tracestuff == TRACEMAX ) {
3173 tracestuff = 0;
3174 }
3175 if ( tracestuff == tracestrip ) {
3176 if ( ++tracestrip == TRACEMAX ) {
3177 tracestrip = 0;
3178 }
3179 ++tracewrap;
3180 }
3181
3182 bc.hdr.port = 0xff & pn;
3183 bc.hdr.cat = cat;
3184 bc.hdr.codes = (unsigned char)( codes & 0xff );
3185 bc.hdr.label = label;
3186 tracebuf[tracestuff++] = bc.value;
3187
3188 for (;;) {
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 if ( !codes-- )
3200 break;
3201
3202 tracebuf[tracestuff++] = *++pCode;
3203 }
3204 }
3205 #endif
3206
3207
3208 MODULE_LICENSE("GPL");
3209
3210 static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
3211 { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) },
3212 { }
3213 };
3214
3215 MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);
3216
3217 MODULE_FIRMWARE("intelliport2.bin");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree