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[linux-2.6-block.git] / drivers / char / ip2 / ip2main.c
CommitLineData
1da177e4
LT		 1/*
2*
3* (c) 1999 by Computone Corporation
4*
5********************************************************************************
6*
7* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport
8* serial I/O controllers.
9*
10* DESCRIPTION: Mainline code for the device driver
11*
12*******************************************************************************/
13// ToDo:
14//
15// Fix the immediate DSS_NOW problem.
16// Work over the channel stats return logic in ip2_ipl_ioctl so they
17// make sense for all 256 possible channels and so the user space
18// utilities will compile and work properly.
19//
20// Done:
21//
22// 1.2.14 /\/\|=mhw=|\/\/
23// Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts.
24// Changed the definition of ip2trace to be more consistent with kernel style
25// Thanks to Andreas Dilger <adilger@turbolabs.com> for these updates
26//
27// 1.2.13 /\/\|=mhw=|\/\/
28// DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform
29// to agreed devfs serial device naming convention.
30//
31// 1.2.12 /\/\|=mhw=|\/\/
32// Cleaned up some remove queue cut and paste errors
33//
34// 1.2.11 /\/\|=mhw=|\/\/
35// Clean up potential NULL pointer dereferences
36// Clean up devfs registration
37// Add kernel command line parsing for io and irq
9c4b562a 38// Compile defaults for io and irq are now set in ip2.c not ip2.h!
1da177e4
LT		 39// Reworked poll_only hack for explicit parameter setting
40// You must now EXPLICITLY set poll_only = 1 or set all irqs to 0
41// Merged ip2_loadmain and old_ip2_init
42// Converted all instances of interruptible_sleep_on into queue calls
43// Most of these had no race conditions but better to clean up now
44//
45// 1.2.10 /\/\|=mhw=|\/\/
46// Fixed the bottom half interrupt handler and enabled USE_IQI
47// to split the interrupt handler into a formal top-half / bottom-half
48// Fixed timing window on high speed processors that queued messages to
49// the outbound mail fifo faster than the board could handle.
50//
51// 1.2.9
52// Four box EX was barfing on >128k kmalloc, made structure smaller by
53// reducing output buffer size
54//
55// 1.2.8
56// Device file system support (MHW)
57//
58// 1.2.7
59// Fixed
60// Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
61//
62// 1.2.6
63//Fixes DCD problems
64// DCD was not reported when CLOCAL was set on call to TIOCMGET
65//
66//Enhancements:
67// TIOCMGET requests and waits for status return
68// No DSS interrupts enabled except for DCD when needed
69//
70// For internal use only
71//
72//#define IP2DEBUG_INIT
73//#define IP2DEBUG_OPEN
74//#define IP2DEBUG_WRITE
75//#define IP2DEBUG_READ
76//#define IP2DEBUG_IOCTL
77//#define IP2DEBUG_IPL
78
79//#define IP2DEBUG_TRACE
80//#define DEBUG_FIFO
81
82/************/
83/* Includes */
84/************/
1da177e4
LT		 85
86#include <linux/ctype.h>
87#include <linux/string.h>
88#include <linux/fcntl.h>
89#include <linux/errno.h>
90#include <linux/module.h>
91#include <linux/signal.h>
92#include <linux/sched.h>
1da177e4
LT		 93#include <linux/timer.h>
94#include <linux/interrupt.h>
95#include <linux/pci.h>
96#include <linux/mm.h>
97#include <linux/slab.h>
98#include <linux/major.h>
99#include <linux/wait.h>
100#include <linux/device.h>
101
102#include <linux/tty.h>
103#include <linux/tty_flip.h>
104#include <linux/termios.h>
105#include <linux/tty_driver.h>
106#include <linux/serial.h>
107#include <linux/ptrace.h>
108#include <linux/ioport.h>
109
110#include <linux/cdk.h>
111#include <linux/comstats.h>
112#include <linux/delay.h>
113#include <linux/bitops.h>
114
115#include <asm/system.h>
116#include <asm/io.h>
117#include <asm/irq.h>
118
119#include <linux/vmalloc.h>
120#include <linux/init.h>
1da177e4
LT		 121
122#include <asm/uaccess.h>
123
9c4b562a
AB		 124#include "ip2types.h"
125#include "ip2trace.h"
126#include "ip2ioctl.h"
127#include "ip2.h"
128#include "i2ellis.h"
129#include "i2lib.h"
1da177e4
LT		 130
131/*****************
132 * /proc/ip2mem *
133 *****************/
134
135#include <linux/proc_fs.h>
136
137static int ip2_read_procmem(char *, char **, off_t, int);
138static int ip2_read_proc(char *, char **, off_t, int, int *, void * );
139
140/********************/
141/* Type Definitions */
142/********************/
143
144/*************/
145/* Constants */
146/*************/
147
148/* String constants to identify ourselves */
149static char *pcName = "Computone IntelliPort Plus multiport driver";
150static char *pcVersion = "1.2.14";
151
152/* String constants for port names */
153static char *pcDriver_name = "ip2";
154static char *pcIpl = "ip2ipl";
155
156/* Serial subtype definitions */
157#define SERIAL_TYPE_NORMAL 1
158
159// cheezy kludge or genius - you decide?
160int ip2_loadmain(int *, int *, unsigned char *, int);
161static unsigned char *Fip_firmware;
162static int Fip_firmware_size;
163
164/***********************/
165/* Function Prototypes */
166/***********************/
167
168/* Global module entry functions */
169
170/* Private (static) functions */
171static int ip2_open(PTTY, struct file *);
172static void ip2_close(PTTY, struct file *);
d9e39538 173static int ip2_write(PTTY, const unsigned char *, int);
1da177e4
LT		 174static void ip2_putchar(PTTY, unsigned char);
175static void ip2_flush_chars(PTTY);
176static int ip2_write_room(PTTY);
177static int ip2_chars_in_buf(PTTY);
178static void ip2_flush_buffer(PTTY);
179static int ip2_ioctl(PTTY, struct file *, UINT, ULONG);
606d099c 180static void ip2_set_termios(PTTY, struct ktermios *);
1da177e4
LT		 181static void ip2_set_line_discipline(PTTY);
182static void ip2_throttle(PTTY);
183static void ip2_unthrottle(PTTY);
184static void ip2_stop(PTTY);
185static void ip2_start(PTTY);
186static void ip2_hangup(PTTY);
187static int ip2_tiocmget(struct tty_struct *tty, struct file *file);
188static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
189 unsigned int set, unsigned int clear);
190
191static void set_irq(int, int);
c4028958 192static void ip2_interrupt_bh(struct work_struct *work);
7d12e780 193static irqreturn_t ip2_interrupt(int irq, void *dev_id);
1da177e4
LT		 194static void ip2_poll(unsigned long arg);
195static inline void service_all_boards(void);
c4028958
DH		 196static void do_input(struct work_struct *);
197static void do_status(struct work_struct *);
1da177e4
LT		 198
199static void ip2_wait_until_sent(PTTY,int);
200
606d099c 201static void set_params (i2ChanStrPtr, struct ktermios *);
1da177e4
LT		 202static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
203static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
204
205static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
206static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
207static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG);
208static int ip2_ipl_open(struct inode *, struct file *);
209
210static int DumpTraceBuffer(char __user *, int);
211static int DumpFifoBuffer( char __user *, int);
212
213static void ip2_init_board(int);
214static unsigned short find_eisa_board(int);
215
216/***************/
217/* Static Data */
218/***************/
219
220static struct tty_driver *ip2_tty_driver;
221
222/* Here, then is a table of board pointers which the interrupt routine should
223 * scan through to determine who it must service.
224 */
225static unsigned short i2nBoards; // Number of boards here
226
227static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
228
229static i2ChanStrPtr DevTable[IP2_MAX_PORTS];
230//DevTableMem just used to save addresses for kfree
231static void *DevTableMem[IP2_MAX_BOARDS];
232
233/* This is the driver descriptor for the ip2ipl device, which is used to
234 * download the loadware to the boards.
235 */
62322d25 236static const struct file_operations ip2_ipl = {
1da177e4
LT		 237 .owner = THIS_MODULE,
238 .read = ip2_ipl_read,
239 .write = ip2_ipl_write,
240 .ioctl = ip2_ipl_ioctl,
241 .open = ip2_ipl_open,
242};
243
244static unsigned long irq_counter = 0;
245static unsigned long bh_counter = 0;
246
247// Use immediate queue to service interrupts
248#define USE_IQI
249//#define USE_IQ // PCI&2.2 needs work
250
251/* The timer_list entry for our poll routine. If interrupt operation is not
252 * selected, the board is serviced periodically to see if anything needs doing.
253 */
254#define POLL_TIMEOUT (jiffies + 1)
8d06afab 255static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
1da177e4
LT		 256static char TimerOn;
257
258#ifdef IP2DEBUG_TRACE
259/* Trace (debug) buffer data */
260#define TRACEMAX 1000
261static unsigned long tracebuf[TRACEMAX];
262static int tracestuff;
263static int tracestrip;
264static int tracewrap;
265#endif
266
267/**********/
268/* Macros */
269/**********/
270
271#if defined(MODULE) && defined(IP2DEBUG_OPEN)
272#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \
273 tty->name,(pCh->flags),ip2_tty_driver->refcount, \
274 tty->count,/*GET_USE_COUNT(module)*/0,s)
275#else
276#define DBG_CNT(s)
277#endif
278
279/********/
280/* Code */
281/********/
282
9c4b562a
AB		 283#include "i2ellis.c" /* Extremely low-level interface services */
284#include "i2cmd.c" /* Standard loadware command definitions */
285#include "i2lib.c" /* High level interface services */
1da177e4
LT		 286
287/* Configuration area for modprobe */
288
289MODULE_AUTHOR("Doug McNash");
290MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
291
292static int poll_only = 0;
293
294static int Eisa_irq;
295static int Eisa_slot;
296
297static int iindx;
298static char rirqs[IP2_MAX_BOARDS];
299static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
300
301/* for sysfs class support */
ca8eca68 302static struct class *ip2_class;
1da177e4
LT		 303
304// Some functions to keep track of what irq's we have
305
673e321c 306static int
1da177e4
LT		 307is_valid_irq(int irq)
308{
309 int *i = Valid_Irqs;
310
311 while ((*i != 0) && (*i != irq)) {
312 i++;
313 }
314 return (*i);
315}
316
673e321c 317static void
1da177e4
LT		 318mark_requested_irq( char irq )
319{
320 rirqs[iindx++] = irq;
321}
322
323#ifdef MODULE
673e321c 324static int
1da177e4
LT		 325clear_requested_irq( char irq )
326{
327 int i;
328 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
329 if (rirqs[i] == irq) {
330 rirqs[i] = 0;
331 return 1;
332 }
333 }
334 return 0;
335}
336#endif
337
673e321c 338static int
1da177e4
LT		 339have_requested_irq( char irq )
340{
341 // array init to zeros so 0 irq will not be requested as a side effect
342 int i;
343 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
344 if (rirqs[i] == irq)
345 return 1;
346 }
347 return 0;
348}
349
350/******************************************************************************/
351/* Function: init_module() */
352/* Parameters: None */
353/* Returns: Success (0) */
354/* */
355/* Description: */
356/* This is a required entry point for an installable module. It simply calls */
357/* the driver initialisation function and returns what it returns. */
358/******************************************************************************/
359#ifdef MODULE
360int
361init_module(void)
362{
363#ifdef IP2DEBUG_INIT
364 printk (KERN_DEBUG "Loading module ...\n" );
365#endif
366 return 0;
367}
368#endif /* MODULE */
369
370/******************************************************************************/
371/* Function: cleanup_module() */
372/* Parameters: None */
373/* Returns: Nothing */
374/* */
375/* Description: */
376/* This is a required entry point for an installable module. It has to return */
377/* the device and the driver to a passive state. It should not be necessary */
378/* to reset the board fully, especially as the loadware is downloaded */
379/* externally rather than in the driver. We just want to disable the board */
380/* and clear the loadware to a reset state. To allow this there has to be a */
381/* way to detect whether the board has the loadware running at init time to */
382/* handle subsequent installations of the driver. All memory allocated by the */
383/* driver should be returned since it may be unloaded from memory. */
384/******************************************************************************/
385#ifdef MODULE
386void
387cleanup_module(void)
388{
389 int err;
390 int i;
391
392#ifdef IP2DEBUG_INIT
393 printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion );
394#endif
395 /* Stop poll timer if we had one. */
396 if ( TimerOn ) {
397 del_timer ( &PollTimer );
398 TimerOn = 0;
399 }
400
401 /* Reset the boards we have. */
402 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
403 if ( i2BoardPtrTable[i] ) {
404 iiReset( i2BoardPtrTable[i] );
405 }
406 }
407
408 /* The following is done at most once, if any boards were installed. */
409 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
410 if ( i2BoardPtrTable[i] ) {
411 iiResetDelay( i2BoardPtrTable[i] );
412 /* free io addresses and Tibet */
413 release_region( ip2config.addr[i], 8 );
07c015e7 414 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
415 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
1da177e4
LT		 416 }
417 /* Disable and remove interrupt handler. */
418 if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) {
419 free_irq ( ip2config.irq[i], (void *)&pcName);
420 clear_requested_irq( ip2config.irq[i]);
421 }
422 }
ca8eca68 423 class_destroy(ip2_class);
1da177e4
LT		 424 if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) {
425 printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
426 }
427 put_tty_driver(ip2_tty_driver);
68fc4fab 428 unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
1da177e4
LT		 429 remove_proc_entry("ip2mem", &proc_root);
430
431 // free memory
432 for (i = 0; i < IP2_MAX_BOARDS; i++) {
433 void *pB;
434#ifdef CONFIG_PCI
435 if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
436 pci_disable_device(ip2config.pci_dev[i]);
1aff0eca 437 pci_dev_put(ip2config.pci_dev[i]);
1da177e4
LT		 438 ip2config.pci_dev[i] = NULL;
439 }
440#endif
441 if ((pB = i2BoardPtrTable[i]) != 0 ) {
442 kfree ( pB );
443 i2BoardPtrTable[i] = NULL;
444 }
445 if ((DevTableMem[i]) != NULL ) {
446 kfree ( DevTableMem[i] );
447 DevTableMem[i] = NULL;
448 }
449 }
450
451 /* Cleanup the iiEllis subsystem. */
452 iiEllisCleanup();
453#ifdef IP2DEBUG_INIT
454 printk (KERN_DEBUG "IP2 Unloaded\n" );
455#endif
456}
457#endif /* MODULE */
458
b68e31d0 459static const struct tty_operations ip2_ops = {
1da177e4
LT		 460 .open = ip2_open,
461 .close = ip2_close,
462 .write = ip2_write,
463 .put_char = ip2_putchar,
464 .flush_chars = ip2_flush_chars,
465 .write_room = ip2_write_room,
466 .chars_in_buffer = ip2_chars_in_buf,
467 .flush_buffer = ip2_flush_buffer,
468 .ioctl = ip2_ioctl,
469 .throttle = ip2_throttle,
470 .unthrottle = ip2_unthrottle,
471 .set_termios = ip2_set_termios,
472 .set_ldisc = ip2_set_line_discipline,
473 .stop = ip2_stop,
474 .start = ip2_start,
475 .hangup = ip2_hangup,
476 .read_proc = ip2_read_proc,
477 .tiocmget = ip2_tiocmget,
478 .tiocmset = ip2_tiocmset,
479};
480
481/******************************************************************************/
482/* Function: ip2_loadmain() */
483/* Parameters: irq, io from command line of insmod et. al. */
484/* pointer to fip firmware and firmware size for boards */
485/* Returns: Success (0) */
486/* */
487/* Description: */
488/* This was the required entry point for all drivers (now in ip2.c) */
489/* It performs all */
490/* initialisation of the devices and driver structures, and registers itself */
491/* with the relevant kernel modules. */
492/******************************************************************************/
0f2ed4c6
TG		 493/* IRQF_DISABLED - if set blocks all interrupts else only this line */
494/* IRQF_SHARED - for shared irq PCI or maybe EISA only */
1da177e4
LT		 495/* SA_RANDOM - can be source for cert. random number generators */
496#define IP2_SA_FLAGS 0
497
498int
499ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize)
500{
501 int i, j, box;
502 int err = 0;
1da177e4
LT		 503 static int loaded;
504 i2eBordStrPtr pB = NULL;
505 int rc = -1;
1aff0eca 506 static struct pci_dev *pci_dev_i = NULL;
1da177e4
LT		 507
508 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 );
509
510 /* process command line arguments to modprobe or
511 insmod i.e. iop & irqp */
512 /* irqp and iop should ALWAYS be specified now... But we check
513 them individually just to be sure, anyways... */
514 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
515 if (iop) {
516 ip2config.addr[i] = iop[i];
517 if (irqp) {
518 if( irqp[i] >= 0 ) {
519 ip2config.irq[i] = irqp[i];
520 } else {
521 ip2config.irq[i] = 0;
522 }
523 // This is a little bit of a hack. If poll_only=1 on command
524 // line back in ip2.c OR all IRQs on all specified boards are
525 // explicitly set to 0, then drop to poll only mode and override
526 // PCI or EISA interrupts. This superceeds the old hack of
527 // triggering if all interrupts were zero (like da default).
528 // Still a hack but less prone to random acts of terrorism.
529 //
530 // What we really should do, now that the IRQ default is set
531 // to -1, is to use 0 as a hard coded, do not probe.
532 //
533 // /\/\|=mhw=|\/\/
534 poll_only |= irqp[i];
535 }
536 }
537 }
538 poll_only = !poll_only;
539
540 Fip_firmware = firmware;
541 Fip_firmware_size = firmsize;
542
543 /* Announce our presence */
544 printk( KERN_INFO "%s version %s\n", pcName, pcVersion );
545
546 // ip2 can be unloaded and reloaded for no good reason
547 // we can't let that happen here or bad things happen
548 // second load hoses board but not system - fixme later
549 if (loaded) {
550 printk( KERN_INFO "Still loaded\n" );
551 return 0;
552 }
553 loaded++;
554
555 ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
556 if (!ip2_tty_driver)
557 return -ENOMEM;
558
559 /* Initialise the iiEllis subsystem. */
560 iiEllisInit();
561
562 /* Initialize arrays. */
563 memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable );
564 memset( DevTable, 0, sizeof DevTable );
565
566 /* Initialise all the boards we can find (up to the maximum). */
567 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
568 switch ( ip2config.addr[i] ) {
569 case 0: /* skip this slot even if card is present */
570 break;
571 default: /* ISA */
572 /* ISA address must be specified */
573 if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) {
574 printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n",
575 i, ip2config.addr[i] );
576 ip2config.addr[i] = 0;
577 } else {
578 ip2config.type[i] = ISA;
579
580 /* Check for valid irq argument, set for polling if invalid */
581 if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) {
582 printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]);
583 ip2config.irq[i] = 0;// 0 is polling and is valid in that sense
584 }
585 }
586 break;
587 case PCI:
588#ifdef CONFIG_PCI
589 {
ad4a5bb8
AM		 590 int status;
591
1aff0eca 592 pci_dev_i = pci_get_device(PCI_VENDOR_ID_COMPUTONE,
1da177e4
LT		 593 PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i);
594 if (pci_dev_i != NULL) {
595 unsigned int addr;
596
597 if (pci_enable_device(pci_dev_i)) {
598 printk( KERN_ERR "IP2: can't enable PCI device at %s\n",
599 pci_name(pci_dev_i));
600 break;
601 }
602 ip2config.type[i] = PCI;
1aff0eca 603 ip2config.pci_dev[i] = pci_dev_get(pci_dev_i);
1da177e4
LT		 604 status =
605 pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr);
606 if ( addr & 1 ) {
607 ip2config.addr[i]=(USHORT)(addr&0xfffe);
608 } else {
609 printk( KERN_ERR "IP2: PCI I/O address error\n");
610 }
611
612// If the PCI BIOS assigned it, lets try and use it. If we
613// can't acquire it or it screws up, deal with it then.
614
615// if (!is_valid_irq(pci_irq)) {
616// printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq);
617// pci_irq = 0;
618// }
619 ip2config.irq[i] = pci_dev_i->irq;
620 } else { // ann error
621 ip2config.addr[i] = 0;
2b0172e1 622 printk(KERN_ERR "IP2: PCI board %d not found\n", i);
1da177e4
LT		 623 }
624 }
625#else
626 printk( KERN_ERR "IP2: PCI card specified but PCI support not\n");
627 printk( KERN_ERR "IP2: configured in this kernel.\n");
628 printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n");
629#endif /* CONFIG_PCI */
630 break;
631 case EISA:
632 if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) {
633 /* Eisa_irq set as side effect, boo */
634 ip2config.type[i] = EISA;
635 }
636 ip2config.irq[i] = Eisa_irq;
637 break;
638 } /* switch */
639 } /* for */
1aff0eca
AC		 640 if (pci_dev_i)
641 pci_dev_put(pci_dev_i);
642
1da177e4
LT		 643 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
644 if ( ip2config.addr[i] ) {
978550b8
MK		 645 pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL);
646 if (pB) {
1da177e4 647 i2BoardPtrTable[i] = pB;
1da177e4
LT		 648 iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer );
649 iiReset( pB );
650 } else {
651 printk(KERN_ERR "IP2: board memory allocation error\n");
652 }
653 }
654 }
655 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
656 if ( ( pB = i2BoardPtrTable[i] ) != NULL ) {
657 iiResetDelay( pB );
658 break;
659 }
660 }
661 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
662 if ( i2BoardPtrTable[i] != NULL ) {
663 ip2_init_board( i );
664 }
665 }
666
667 ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 );
668
669 ip2_tty_driver->owner = THIS_MODULE;
670 ip2_tty_driver->name = "ttyF";
1da177e4
LT		 671 ip2_tty_driver->driver_name = pcDriver_name;
672 ip2_tty_driver->major = IP2_TTY_MAJOR;
673 ip2_tty_driver->minor_start = 0;
674 ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
675 ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
676 ip2_tty_driver->init_termios = tty_std_termios;
677 ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
331b8319 678 ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1da177e4
LT		 679 tty_set_operations(ip2_tty_driver, &ip2_ops);
680
681 ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 );
682
683 /* Register the tty devices. */
684 if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) {
685 printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err);
686 put_tty_driver(ip2_tty_driver);
687 return -EINVAL;
688 } else
689 /* Register the IPL driver. */
690 if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) {
691 printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err );
692 } else {
693 /* create the sysfs class */
ca8eca68 694 ip2_class = class_create(THIS_MODULE, "ip2");
1da177e4
LT		 695 if (IS_ERR(ip2_class)) {
696 err = PTR_ERR(ip2_class);
697 goto out_chrdev;
698 }
699 }
700 /* Register the read_procmem thing */
701 if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) {
702 printk(KERN_ERR "IP2: failed to register read_procmem\n");
703 } else {
704
705 ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 );
706 /* Register the interrupt handler or poll handler, depending upon the
707 * specified interrupt.
708 */
709
710 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
711 if ( 0 == ip2config.addr[i] ) {
712 continue;
713 }
714
715 if ( NULL != ( pB = i2BoardPtrTable[i] ) ) {
07c015e7 716 device_create(ip2_class, NULL,
53f46542 717 MKDEV(IP2_IPL_MAJOR, 4 * i),
07c015e7 718 "ipl%d", i);
719 device_create(ip2_class, NULL,
53f46542 720 MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
07c015e7 721 "stat%d", i);
1da177e4
LT		 722
723 for ( box = 0; box < ABS_MAX_BOXES; ++box )
724 {
725 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
726 {
727 if ( pB->i2eChannelMap[box] & (1 << j) )
728 {
729 tty_register_device(ip2_tty_driver,
730 j + ABS_BIGGEST_BOX *
731 (box+i*ABS_MAX_BOXES), NULL);
732 }
733 }
734 }
735 }
736
737 if (poll_only) {
738// Poll only forces driver to only use polling and
739// to ignore the probed PCI or EISA interrupts.
740 ip2config.irq[i] = CIR_POLL;
741 }
742 if ( ip2config.irq[i] == CIR_POLL ) {
743retry:
744 if (!TimerOn) {
745 PollTimer.expires = POLL_TIMEOUT;
746 add_timer ( &PollTimer );
747 TimerOn = 1;
748 printk( KERN_INFO "IP2: polling\n");
749 }
750 } else {
751 if (have_requested_irq(ip2config.irq[i]))
752 continue;
753 rc = request_irq( ip2config.irq[i], ip2_interrupt,
0f2ed4c6 754 IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
6bd3bd67 755 pcName, i2BoardPtrTable[i]);
1da177e4
LT		 756 if (rc) {
757 printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
758 ip2config.irq[i] = CIR_POLL;
759 printk( KERN_INFO "IP2: Polling %ld/sec.\n",
760 (POLL_TIMEOUT - jiffies));
761 goto retry;
762 }
763 mark_requested_irq(ip2config.irq[i]);
764 /* Initialise the interrupt handler bottom half (aka slih). */
765 }
766 }
767 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
768 if ( i2BoardPtrTable[i] ) {
769 set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */
770 }
771 }
772 }
773 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 );
774 goto out;
775
1da177e4
LT		 776out_chrdev:
777 unregister_chrdev(IP2_IPL_MAJOR, "ip2");
778out:
779 return err;
780}
781
782EXPORT_SYMBOL(ip2_loadmain);
783
784/******************************************************************************/
785/* Function: ip2_init_board() */
786/* Parameters: Index of board in configuration structure */
787/* Returns: Success (0) */
788/* */
789/* Description: */
790/* This function initializes the specified board. The loadware is copied to */
791/* the board, the channel structures are initialized, and the board details */
792/* are reported on the console. */
793/******************************************************************************/
673e321c 794static void
1da177e4
LT		 795ip2_init_board( int boardnum )
796{
797 int i;
798 int nports = 0, nboxes = 0;
799 i2ChanStrPtr pCh;
800 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
801
802 if ( !iiInitialize ( pB ) ) {
803 printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
804 pB->i2eBase, pB->i2eError );
805 goto err_initialize;
806 }
807 printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
808 ip2config.addr[boardnum], ip2config.irq[boardnum] );
809
810 if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
811 printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
812 goto err_initialize;
813 }
814
815 if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size )
816 != II_DOWN_GOOD ) {
817 printk ( KERN_ERR "IP2: failed to download loadware\n" );
818 goto err_release_region;
819 } else {
820 printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
821 pB->i2ePom.e.porVersion,
822 pB->i2ePom.e.porRevision,
823 pB->i2ePom.e.porSubRev, pB->i2eLVersion,
824 pB->i2eLRevision, pB->i2eLSub );
825 }
826
827 switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
828
829 default:
830 printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
831 pB->i2ePom.e.porID );
832 nports = 0;
833 goto err_release_region;
834 break;
835
836 case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
837 printk ( KERN_INFO "IP2: ISA-4\n" );
838 nports = 4;
839 break;
840
841 case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
842 printk ( KERN_INFO "IP2: ISA-8 std\n" );
843 nports = 8;
844 break;
845
846 case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
847 printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
848 nports = 8;
849 break;
850
851 case POR_ID_FIIEX: /* IntelliPort IIEX */
852 {
853 int portnum = IP2_PORTS_PER_BOARD * boardnum;
854 int box;
855
856 for( box = 0; box < ABS_MAX_BOXES; ++box ) {
857 if ( pB->i2eChannelMap[box] != 0 ) {
858 ++nboxes;
859 }
860 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
861 if ( pB->i2eChannelMap[box] & 1<< i ) {
862 ++nports;
863 }
864 }
865 }
866 DevTableMem[boardnum] = pCh =
867 kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
868 if ( !pCh ) {
869 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
870 goto err_release_region;
871 }
872 if ( !i2InitChannels( pB, nports, pCh ) ) {
873 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
874 kfree ( pCh );
875 goto err_release_region;
876 }
877 pB->i2eChannelPtr = &DevTable[portnum];
878 pB->i2eChannelCnt = ABS_MOST_PORTS;
879
880 for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
881 for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
882 if ( pB->i2eChannelMap[box] & (1 << i) ) {
883 DevTable[portnum + i] = pCh;
884 pCh->port_index = portnum + i;
885 pCh++;
886 }
887 }
888 }
889 printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
890 nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
891 }
892 goto ex_exit;
893 }
894 DevTableMem[boardnum] = pCh =
895 kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
896 if ( !pCh ) {
897 printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
898 goto err_release_region;
899 }
900 pB->i2eChannelPtr = pCh;
901 pB->i2eChannelCnt = nports;
902 if ( !i2InitChannels( pB, nports, pCh ) ) {
903 printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
904 kfree ( pCh );
905 goto err_release_region;
906 }
907 pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
908
909 for( i = 0; i < pB->i2eChannelCnt; ++i ) {
910 DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
911 pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
912 pCh++;
913 }
914ex_exit:
c4028958 915 INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh);
1da177e4
LT		 916 return;
917
918err_release_region:
919 release_region(ip2config.addr[boardnum], 8);
920err_initialize:
921 kfree ( pB );
922 i2BoardPtrTable[boardnum] = NULL;
923 return;
924}
925
926/******************************************************************************/
927/* Function: find_eisa_board ( int start_slot ) */
928/* Parameters: First slot to check */
929/* Returns: Address of EISA IntelliPort II controller */
930/* */
931/* Description: */
932/* This function searches for an EISA IntelliPort controller, starting */
933/* from the specified slot number. If the motherboard is not identified as an */
934/* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
935/* it returns the base address of the controller. */
936/******************************************************************************/
673e321c 937static unsigned short
1da177e4
LT		 938find_eisa_board( int start_slot )
939{
940 int i, j;
941 unsigned int idm = 0;
942 unsigned int idp = 0;
943 unsigned int base = 0;
944 unsigned int value;
945 int setup_address;
946 int setup_irq;
947 int ismine = 0;
948
949 /*
950 * First a check for an EISA motherboard, which we do by comparing the
951 * EISA ID registers for the system board and the first couple of slots.
952 * No slot ID should match the system board ID, but on an ISA or PCI
953 * machine the odds are that an empty bus will return similar values for
954 * each slot.
955 */
956 i = 0x0c80;
957 value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
958 for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
959 j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
960 if ( value == j )
961 return 0;
962 }
963
964 /*
965 * OK, so we are inclined to believe that this is an EISA machine. Find
966 * an IntelliPort controller.
967 */
968 for( i = start_slot; i < 16; i++ ) {
969 base = i << 12;
970 idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
971 idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
972 ismine = 0;
973 if ( idm == 0x0e8e ) {
974 if ( idp == 0x0281 || idp == 0x0218 ) {
975 ismine = 1;
976 } else if ( idp == 0x0282 || idp == 0x0283 ) {
977 ismine = 3; /* Can do edge-trigger */
978 }
979 if ( ismine ) {
980 Eisa_slot = i;
981 break;
982 }
983 }
984 }
985 if ( !ismine )
986 return 0;
987
988 /* It's some sort of EISA card, but at what address is it configured? */
989
990 setup_address = base + 0xc88;
991 value = inb(base + 0xc86);
992 setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
993
994 if ( (ismine & 2) && !(value & 0x10) ) {
995 ismine = 1; /* Could be edging, but not */
996 }
997
998 if ( Eisa_irq == 0 ) {
999 Eisa_irq = setup_irq;
1000 } else if ( Eisa_irq != setup_irq ) {
1001 printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
1002 }
1003
1004#ifdef IP2DEBUG_INIT
1005printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
1006 base >> 12, idm, idp, setup_address);
1007 if ( Eisa_irq ) {
1008 printk(KERN_DEBUG ", Interrupt %d %s\n",
1009 setup_irq, (ismine & 2) ? "(edge)" : "(level)");
1010 } else {
1011 printk(KERN_DEBUG ", (polled)\n");
1012 }
1013#endif
1014 return setup_address;
1015}
1016
1017/******************************************************************************/
1018/* Function: set_irq() */
1019/* Parameters: index to board in board table */
1020/* IRQ to use */
1021/* Returns: Success (0) */
1022/* */
1023/* Description: */
1024/******************************************************************************/
1025static void
1026set_irq( int boardnum, int boardIrq )
1027{
1028 unsigned char tempCommand[16];
1029 i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
1030 unsigned long flags;
1031
1032 /*
1033 * Notify the boards they may generate interrupts. This is done by
1034 * sending an in-line command to channel 0 on each board. This is why
1035 * the channels have to be defined already. For each board, if the
1036 * interrupt has never been defined, we must do so NOW, directly, since
1037 * board will not send flow control or even give an interrupt until this
1038 * is done. If polling we must send 0 as the interrupt parameter.
1039 */
1040
1041 // We will get an interrupt here at the end of this function
1042
1043 iiDisableMailIrq(pB);
1044
1045 /* We build up the entire packet header. */
1046 CHANNEL_OF(tempCommand) = 0;
1047 PTYPE_OF(tempCommand) = PTYPE_INLINE;
1048 CMD_COUNT_OF(tempCommand) = 2;
1049 (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
1050 (CMD_OF(tempCommand))[1] = boardIrq;
1051 /*
1052 * Write to FIFO; don't bother to adjust fifo capacity for this, since
1053 * board will respond almost immediately after SendMail hit.
1054 */
1055 WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
1056 iiWriteBuf(pB, tempCommand, 4);
1057 WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
1058 pB->i2eUsingIrq = boardIrq;
1059 pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
1060
1061 /* Need to update number of boards before you enable mailbox int */
1062 ++i2nBoards;
1063
1064 CHANNEL_OF(tempCommand) = 0;
1065 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1066 CMD_COUNT_OF(tempCommand) = 6;
1067 (CMD_OF(tempCommand))[0] = 88; // SILO
1068 (CMD_OF(tempCommand))[1] = 64; // chars
1069 (CMD_OF(tempCommand))[2] = 32; // ms
1070
1071 (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK
1072 (CMD_OF(tempCommand))[4] = 64; // chars
1073
1074 (CMD_OF(tempCommand))[5] = 87; // HW_TEST
1075 WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
1076 iiWriteBuf(pB, tempCommand, 8);
1077 WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
1078
1079 CHANNEL_OF(tempCommand) = 0;
1080 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1081 CMD_COUNT_OF(tempCommand) = 1;
1082 (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */
1083 iiWriteBuf(pB, tempCommand, 3);
1084
1085#ifdef XXX
1086 // enable heartbeat for test porpoises
1087 CHANNEL_OF(tempCommand) = 0;
1088 PTYPE_OF(tempCommand) = PTYPE_BYPASS;
1089 CMD_COUNT_OF(tempCommand) = 2;
1090 (CMD_OF(tempCommand))[0] = 44; /* get ping */
1091 (CMD_OF(tempCommand))[1] = 200; /* 200 ms */
1092 WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
1093 iiWriteBuf(pB, tempCommand, 4);
1094 WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
1095#endif
1096
1097 iiEnableMailIrq(pB);
1098 iiSendPendingMail(pB);
1099}
1100
1101/******************************************************************************/
1102/* Interrupt Handler Section */
1103/******************************************************************************/
1104
1105static inline void
1106service_all_boards(void)
1107{
1108 int i;
1109 i2eBordStrPtr pB;
1110
1111 /* Service every board on the list */
1112 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
1113 pB = i2BoardPtrTable[i];
1114 if ( pB ) {
1115 i2ServiceBoard( pB );
1116 }
1117 }
1118}
1119
1120
1121/******************************************************************************/
c4028958
DH		 1122/* Function: ip2_interrupt_bh(work) */
1123/* Parameters: work - pointer to the board structure */
1da177e4
LT		 1124/* Returns: Nothing */
1125/* */
1126/* Description: */
1127/* Service the board in a bottom half interrupt handler and then */
1128/* reenable the board's interrupts if it has an IRQ number */
1129/* */
1130/******************************************************************************/
1131static void
c4028958 1132ip2_interrupt_bh(struct work_struct *work)
1da177e4 1133{
c4028958 1134 i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt);
1da177e4
LT		 1135// pB better well be set or we have a problem! We can only get
1136// here from the IMMEDIATE queue. Here, we process the boards.
1137// Checking pB doesn't cost much and it saves us from the sanity checkers.
1138
1139 bh_counter++;
1140
1141 if ( pB ) {
1142 i2ServiceBoard( pB );
1143 if( pB->i2eUsingIrq ) {
1144// Re-enable his interrupts
1145 iiEnableMailIrq(pB);
1146 }
1147 }
1148}
1149
1150
1151/******************************************************************************/
7d12e780 1152/* Function: ip2_interrupt(int irq, void *dev_id) */
1da177e4
LT		 1153/* Parameters: irq - interrupt number */
1154/* pointer to optional device ID structure */
1da177e4
LT		 1155/* Returns: Nothing */
1156/* */
1157/* Description: */
1158/* */
1159/* Our task here is simply to identify each board which needs servicing. */
1160/* If we are queuing then, queue it to be serviced, and disable its irq */
1161/* mask otherwise process the board directly. */
1162/* */
1163/* We could queue by IRQ but that just complicates things on both ends */
1164/* with very little gain in performance (how many instructions does */
1165/* it take to iterate on the immediate queue). */
1166/* */
1167/* */
1168/******************************************************************************/
f3518e4e
JG		 1169static void
1170ip2_irq_work(i2eBordStrPtr pB)
1171{
1172#ifdef USE_IQI
1173 if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
1174// Disable his interrupt (will be enabled when serviced)
1175// This is mostly to protect from reentrancy.
1176 iiDisableMailIrq(pB);
1177
1178// Park the board on the immediate queue for processing.
1179 schedule_work(&pB->tqueue_interrupt);
1180
1181// Make sure the immediate queue is flagged to fire.
1182 }
1183#else
1184
1185// We are using immediate servicing here. This sucks and can
1186// cause all sorts of havoc with ppp and others. The failsafe
1187// check on iiSendPendingMail could also throw a hairball.
1188
1189 i2ServiceBoard( pB );
1190
1191#endif /* USE_IQI */
1192}
1193
6bd3bd67
JG		 1194static void
1195ip2_polled_interrupt(void)
1da177e4
LT		 1196{
1197 int i;
1198 i2eBordStrPtr pB;
6bd3bd67 1199 const int irq = 0;
1da177e4
LT		 1200
1201 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq );
1202
1203 /* Service just the boards on the list using this irq */
1204 for( i = 0; i < i2nBoards; ++i ) {
1205 pB = i2BoardPtrTable[i];
1206
1207// Only process those boards which match our IRQ.
1208// IRQ = 0 for polled boards, we won't poll "IRQ" boards
1209
1210 if ( pB && (pB->i2eUsingIrq == irq) ) {
f3518e4e 1211 ip2_irq_work(pB);
1da177e4
LT		 1212 }
1213 }
1214
1215 ++irq_counter;
1216
1217 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
6bd3bd67
JG		 1218}
1219
1220static irqreturn_t
1221ip2_interrupt(int irq, void *dev_id)
1222{
1223 i2eBordStrPtr pB = dev_id;
1224
1225 ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq );
1226
1227 ip2_irq_work(pB);
1228
1229 ++irq_counter;
1230
1231 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1232 return IRQ_HANDLED;
1da177e4
LT		 1233}
1234
1235/******************************************************************************/
1236/* Function: ip2_poll(unsigned long arg) */
1237/* Parameters: ? */
1238/* Returns: Nothing */
1239/* */
1240/* Description: */
1241/* This function calls the library routine i2ServiceBoard for each board in */
1242/* the board table. This is used instead of the interrupt routine when polled */
1243/* mode is specified. */
1244/******************************************************************************/
1245static void
1246ip2_poll(unsigned long arg)
1247{
1248 ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
1249
1250 TimerOn = 0; // it's the truth but not checked in service
1251
1252 // Just polled boards, IRQ = 0 will hit all non-interrupt boards.
1253 // It will NOT poll boards handled by hard interrupts.
1254 // The issue of queued BH interrups is handled in ip2_interrupt().
6bd3bd67 1255 ip2_polled_interrupt();
1da177e4
LT		 1256
1257 PollTimer.expires = POLL_TIMEOUT;
1258 add_timer( &PollTimer );
1259 TimerOn = 1;
1260
1261 ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
1262}
1263
c4028958 1264static void do_input(struct work_struct *work)
1da177e4 1265{
c4028958 1266 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input);
1da177e4
LT		 1267 unsigned long flags;
1268
1269 ip2trace(CHANN, ITRC_INPUT, 21, 0 );
1270
1271 // Data input
1272 if ( pCh->pTTY != NULL ) {
1273 READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags)
1274 if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
1275 READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
1276 i2Input( pCh );
1277 } else
1278 READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
1279 } else {
1280 ip2trace(CHANN, ITRC_INPUT, 22, 0 );
1281
1282 i2InputFlush( pCh );
1283 }
1284}
1285
1286// code duplicated from n_tty (ldisc)
1287static inline void isig(int sig, struct tty_struct *tty, int flush)
1288{
ab521dc0
EB		 1289 if (tty->pgrp)
1290 kill_pgrp(tty->pgrp, sig, 1);
1da177e4
LT		 1291 if (flush || !L_NOFLSH(tty)) {
1292 if ( tty->ldisc.flush_buffer )
1293 tty->ldisc.flush_buffer(tty);
1294 i2InputFlush( tty->driver_data );
1295 }
1296}
1297
c4028958 1298static void do_status(struct work_struct *work)
1da177e4 1299{
c4028958 1300 i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status);
1da177e4
LT		 1301 int status;
1302
1303 status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
1304
1305 ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
1306
1307 if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
1308 if ( (status & I2_BRK) ) {
1309 // code duplicated from n_tty (ldisc)
1310 if (I_IGNBRK(pCh->pTTY))
1311 goto skip_this;
1312 if (I_BRKINT(pCh->pTTY)) {
1313 isig(SIGINT, pCh->pTTY, 1);
1314 goto skip_this;
1315 }
1316 wake_up_interruptible(&pCh->pTTY->read_wait);
1317 }
1318#ifdef NEVER_HAPPENS_AS_SETUP_XXX
1319 // and can't work because we don't know the_char
1320 // as the_char is reported on a separate path
1321 // The intelligent board does this stuff as setup
1322 {
1323 char brkf = TTY_NORMAL;
1324 unsigned char brkc = '\0';
1325 unsigned char tmp;
1326 if ( (status & I2_BRK) ) {
1327 brkf = TTY_BREAK;
1328 brkc = '\0';
1329 }
1330 else if (status & I2_PAR) {
1331 brkf = TTY_PARITY;
1332 brkc = the_char;
1333 } else if (status & I2_FRA) {
1334 brkf = TTY_FRAME;
1335 brkc = the_char;
1336 } else if (status & I2_OVR) {
1337 brkf = TTY_OVERRUN;
1338 brkc = the_char;
1339 }
1340 tmp = pCh->pTTY->real_raw;
1341 pCh->pTTY->real_raw = 0;
1342 pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
1343 pCh->pTTY->real_raw = tmp;
1344 }
1345#endif /* NEVER_HAPPENS_AS_SETUP_XXX */
1346 }
1347skip_this:
1348
1349 if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
1350 wake_up_interruptible(&pCh->delta_msr_wait);
1351
1352 if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
1353 if ( status & I2_DCD ) {
1354 if ( pCh->wopen ) {
1355 wake_up_interruptible ( &pCh->open_wait );
1356 }
1357 } else {
1358 if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
1359 tty_hangup( pCh->pTTY );
1360 }
1361 }
1362 }
1363 }
1364
1365 ip2trace (CHANN, ITRC_STATUS, 26, 0 );
1366}
1367
1368/******************************************************************************/
1369/* Device Open/Close/Ioctl Entry Point Section */
1370/******************************************************************************/
1371
1372/******************************************************************************/
1373/* Function: open_sanity_check() */
1374/* Parameters: Pointer to tty structure */
1375/* Pointer to file structure */
1376/* Returns: Success or failure */
1377/* */
1378/* Description: */
1379/* Verifies the structure magic numbers and cross links. */
1380/******************************************************************************/
1381#ifdef IP2DEBUG_OPEN
1382static void
1383open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
1384{
1385 if ( pBrd->i2eValid != I2E_MAGIC ) {
1386 printk(KERN_ERR "IP2: invalid board structure\n" );
1387 } else if ( pBrd != pCh->pMyBord ) {
1388 printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
1389 pCh->pMyBord );
1390 } else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
1391 printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
1392 } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
1393 } else {
1394 printk(KERN_INFO "IP2: all pointers check out!\n" );
1395 }
1396}
1397#endif
1398
1399
1400/******************************************************************************/
1401/* Function: ip2_open() */
1402/* Parameters: Pointer to tty structure */
1403/* Pointer to file structure */
1404/* Returns: Success or failure */
1405/* */
1406/* Description: (MANDATORY) */
1407/* A successful device open has to run a gauntlet of checks before it */
1408/* completes. After some sanity checking and pointer setup, the function */
1409/* blocks until all conditions are satisfied. It then initialises the port to */
1410/* the default characteristics and returns. */
1411/******************************************************************************/
1412static int
1413ip2_open( PTTY tty, struct file *pFile )
1414{
1415 wait_queue_t wait;
1416 int rc = 0;
1417 int do_clocal = 0;
1418 i2ChanStrPtr pCh = DevTable[tty->index];
1419
1420 ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
1421
1422 if ( pCh == NULL ) {
1423 return -ENODEV;
1424 }
1425 /* Setup pointer links in device and tty structures */
1426 pCh->pTTY = tty;
1427 tty->driver_data = pCh;
1428
1429#ifdef IP2DEBUG_OPEN
1430 printk(KERN_DEBUG \
1431 "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
1432 tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
1433 open_sanity_check ( pCh, pCh->pMyBord );
1434#endif
1435
1436 i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
1437 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1438 serviceOutgoingFifo( pCh->pMyBord );
1439
1440 /* Block here until the port is ready (per serial and istallion) */
1441 /*
1442 * 1. If the port is in the middle of closing wait for the completion
1443 * and then return the appropriate error.
1444 */
1445 init_waitqueue_entry(&wait, current);
1446 add_wait_queue(&pCh->close_wait, &wait);
1447 set_current_state( TASK_INTERRUPTIBLE );
1448
1449 if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
1450 if ( pCh->flags & ASYNC_CLOSING ) {
1451 schedule();
1452 }
1453 if ( tty_hung_up_p(pFile) ) {
1454 set_current_state( TASK_RUNNING );
1455 remove_wait_queue(&pCh->close_wait, &wait);
1456 return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
1457 }
1458 }
1459 set_current_state( TASK_RUNNING );
1460 remove_wait_queue(&pCh->close_wait, &wait);
1461
1462 /*
1463 * 3. Handle a non-blocking open of a normal port.
1464 */
1465 if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
1466 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1467 goto noblock;
1468 }
1469 /*
1470 * 4. Now loop waiting for the port to be free and carrier present
1471 * (if required).
1472 */
1473 if ( tty->termios->c_cflag & CLOCAL )
1474 do_clocal = 1;
1475
1476#ifdef IP2DEBUG_OPEN
1477 printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
1478#endif
1479
1480 ++pCh->wopen;
1481
1482 init_waitqueue_entry(&wait, current);
1483 add_wait_queue(&pCh->open_wait, &wait);
1484
1485 for(;;) {
1486 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
1487 pCh->dataSetOut |= (I2_DTR | I2_RTS);
1488 set_current_state( TASK_INTERRUPTIBLE );
1489 serviceOutgoingFifo( pCh->pMyBord );
1490 if ( tty_hung_up_p(pFile) ) {
1491 set_current_state( TASK_RUNNING );
1492 remove_wait_queue(&pCh->open_wait, &wait);
1493 return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
1494 }
1495 if (!(pCh->flags & ASYNC_CLOSING) &&
1496 (do_clocal || (pCh->dataSetIn & I2_DCD) )) {
1497 rc = 0;
1498 break;
1499 }
1500
1501#ifdef IP2DEBUG_OPEN
1502 printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
1503 (pCh->flags & ASYNC_CLOSING)?"True":"False");
1504 printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
1505#endif
1506 ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
1507 (pCh->flags & ASYNC_CLOSING) );
1508 /* check for signal */
1509 if (signal_pending(current)) {
1510 rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
1511 break;
1512 }
1513 schedule();
1514 }
1515 set_current_state( TASK_RUNNING );
1516 remove_wait_queue(&pCh->open_wait, &wait);
1517
1518 --pCh->wopen; //why count?
1519
1520 ip2trace (CHANN, ITRC_OPEN, 4, 0 );
1521
1522 if (rc != 0 ) {
1523 return rc;
1524 }
1525 pCh->flags |= ASYNC_NORMAL_ACTIVE;
1526
1527noblock:
1528
1529 /* first open - Assign termios structure to port */
1530 if ( tty->count == 1 ) {
1531 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1532 /* Now we must send the termios settings to the loadware */
1533 set_params( pCh, NULL );
1534 }
1535
1536 /*
1537 * Now set any i2lib options. These may go away if the i2lib code ends
1538 * up rolled into the mainline.
1539 */
1540 pCh->channelOptions |= CO_NBLOCK_WRITE;
1541
1542#ifdef IP2DEBUG_OPEN
1543 printk (KERN_DEBUG "IP2: open completed\n" );
1544#endif
1545 serviceOutgoingFifo( pCh->pMyBord );
1546
1547 ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
1548
1549 return 0;
1550}
1551
1552/******************************************************************************/
1553/* Function: ip2_close() */
1554/* Parameters: Pointer to tty structure */
1555/* Pointer to file structure */
1556/* Returns: Nothing */
1557/* */
1558/* Description: */
1559/* */
1560/* */
1561/******************************************************************************/
1562static void
1563ip2_close( PTTY tty, struct file *pFile )
1564{
1565 i2ChanStrPtr pCh = tty->driver_data;
1566
1567 if ( !pCh ) {
1568 return;
1569 }
1570
1571 ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
1572
1573#ifdef IP2DEBUG_OPEN
1574 printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
1575#endif
1576
1577 if ( tty_hung_up_p ( pFile ) ) {
1578
1579 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
1580
1581 return;
1582 }
1583 if ( tty->count > 1 ) { /* not the last close */
1584
1585 ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
1586
1587 return;
1588 }
1589 pCh->flags |= ASYNC_CLOSING; // last close actually
1590
1591 tty->closing = 1;
1592
1593 if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
1594 /*
1595 * Before we drop DTR, make sure the transmitter has completely drained.
1596 * This uses an timeout, after which the close
1597 * completes.
1598 */
1599 ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
1600 }
1601 /*
1602 * At this point we stop accepting input. Here we flush the channel
1603 * input buffer which will allow the board to send up more data. Any
1604 * additional input is tossed at interrupt/poll time.
1605 */
1606 i2InputFlush( pCh );
1607
1608 /* disable DSS reporting */
1609 i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
1610 CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1611 if ( !tty || (tty->termios->c_cflag & HUPCL) ) {
1612 i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
1613 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1614 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1615 }
1616
1617 serviceOutgoingFifo ( pCh->pMyBord );
1618
1619 if ( tty->driver->flush_buffer )
1620 tty->driver->flush_buffer(tty);
1621 if ( tty->ldisc.flush_buffer )
1622 tty->ldisc.flush_buffer(tty);
1623 tty->closing = 0;
1624
1625 pCh->pTTY = NULL;
1626
1627 if (pCh->wopen) {
1628 if (pCh->ClosingDelay) {
1629 msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
1630 }
1631 wake_up_interruptible(&pCh->open_wait);
1632 }
1633
1634 pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1635 wake_up_interruptible(&pCh->close_wait);
1636
1637#ifdef IP2DEBUG_OPEN
1638 DBG_CNT("ip2_close: after wakeups--");
1639#endif
1640
1641
1642 ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
1643
1644 return;
1645}
1646
1647/******************************************************************************/
1648/* Function: ip2_hangup() */
1649/* Parameters: Pointer to tty structure */
1650/* Returns: Nothing */
1651/* */
1652/* Description: */
1653/* */
1654/* */
1655/******************************************************************************/
1656static void
1657ip2_hangup ( PTTY tty )
1658{
1659 i2ChanStrPtr pCh = tty->driver_data;
1660
1661 if( !pCh ) {
1662 return;
1663 }
1664
1665 ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
1666
1667 ip2_flush_buffer(tty);
1668
1669 /* disable DSS reporting */
1670
1671 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
1672 i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
1673 if ( (tty->termios->c_cflag & HUPCL) ) {
1674 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
1675 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
1676 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
1677 }
1678 i2QueueCommands(PTYPE_INLINE, pCh, 1, 3,
1679 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
1680 serviceOutgoingFifo ( pCh->pMyBord );
1681
1682 wake_up_interruptible ( &pCh->delta_msr_wait );
1683
1684 pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
1685 pCh->pTTY = NULL;
1686 wake_up_interruptible ( &pCh->open_wait );
1687
1688 ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
1689}
1690
1691/******************************************************************************/
1692/******************************************************************************/
1693/* Device Output Section */
1694/******************************************************************************/
1695/******************************************************************************/
1696
1697/******************************************************************************/
1698/* Function: ip2_write() */
1699/* Parameters: Pointer to tty structure */
1700/* Flag denoting data is in user (1) or kernel (0) space */
1701/* Pointer to data */
1702/* Number of bytes to write */
1703/* Returns: Number of bytes actually written */
1704/* */
1705/* Description: (MANDATORY) */
1706/* */
1707/* */
1708/******************************************************************************/
1709static int
d9e39538 1710ip2_write( PTTY tty, const unsigned char *pData, int count)
1da177e4
LT		 1711{
1712 i2ChanStrPtr pCh = tty->driver_data;
1713 int bytesSent = 0;
1714 unsigned long flags;
1715
1716 ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
1717
1718 /* Flush out any buffered data left over from ip2_putchar() calls. */
1719 ip2_flush_chars( tty );
1720
1721 /* This is the actual move bit. Make sure it does what we need!!!!! */
1722 WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
f061c584 1723 bytesSent = i2Output( pCh, pData, count);
1da177e4
LT		 1724 WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1725
1726 ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
1727
1728 return bytesSent > 0 ? bytesSent : 0;
1729}
1730
1731/******************************************************************************/
1732/* Function: ip2_putchar() */
1733/* Parameters: Pointer to tty structure */
1734/* Character to write */
1735/* Returns: Nothing */
1736/* */
1737/* Description: */
1738/* */
1739/* */
1740/******************************************************************************/
1741static void
1742ip2_putchar( PTTY tty, unsigned char ch )
1743{
1744 i2ChanStrPtr pCh = tty->driver_data;
1745 unsigned long flags;
1746
1747// ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
1748
1749 WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
1750 pCh->Pbuf[pCh->Pbuf_stuff++] = ch;
1751 if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) {
1752 WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1753 ip2_flush_chars( tty );
1754 } else
1755 WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1756
1757// ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
1758}
1759
1760/******************************************************************************/
1761/* Function: ip2_flush_chars() */
1762/* Parameters: Pointer to tty structure */
1763/* Returns: Nothing */
1764/* */
1765/* Description: */
1766/* */
1767/******************************************************************************/
1768static void
1769ip2_flush_chars( PTTY tty )
1770{
1771 int strip;
1772 i2ChanStrPtr pCh = tty->driver_data;
1773 unsigned long flags;
1774
1775 WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
1776 if ( pCh->Pbuf_stuff ) {
1777
1778// ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
1779
1780 //
1781 // We may need to restart i2Output if it does not fullfill this request
1782 //
f061c584 1783 strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff);
1da177e4
LT		 1784 if ( strip != pCh->Pbuf_stuff ) {
1785 memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
1786 }
1787 pCh->Pbuf_stuff -= strip;
1788 }
1789 WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1790}
1791
1792/******************************************************************************/
1793/* Function: ip2_write_room() */
1794/* Parameters: Pointer to tty structure */
1795/* Returns: Number of bytes that the driver can accept */
1796/* */
1797/* Description: */
1798/* */
1799/******************************************************************************/
1800static int
1801ip2_write_room ( PTTY tty )
1802{
1803 int bytesFree;
1804 i2ChanStrPtr pCh = tty->driver_data;
1805 unsigned long flags;
1806
1807 READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
1808 bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
1809 READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1810
1811 ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
1812
1813 return ((bytesFree > 0) ? bytesFree : 0);
1814}
1815
1816/******************************************************************************/
1817/* Function: ip2_chars_in_buf() */
1818/* Parameters: Pointer to tty structure */
1819/* Returns: Number of bytes queued for transmission */
1820/* */
1821/* Description: */
1822/* */
1823/* */
1824/******************************************************************************/
1825static int
1826ip2_chars_in_buf ( PTTY tty )
1827{
1828 i2ChanStrPtr pCh = tty->driver_data;
1829 int rc;
1830 unsigned long flags;
1831
1832 ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
1833
1834#ifdef IP2DEBUG_WRITE
1835 printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
1836 pCh->Obuf_char_count + pCh->Pbuf_stuff,
1837 pCh->Obuf_char_count, pCh->Pbuf_stuff );
1838#endif
1839 READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags);
1840 rc = pCh->Obuf_char_count;
1841 READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags);
1842 READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
1843 rc += pCh->Pbuf_stuff;
1844 READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1845 return rc;
1846}
1847
1848/******************************************************************************/
1849/* Function: ip2_flush_buffer() */
1850/* Parameters: Pointer to tty structure */
1851/* Returns: Nothing */
1852/* */
1853/* Description: */
1854/* */
1855/* */
1856/******************************************************************************/
1857static void
1858ip2_flush_buffer( PTTY tty )
1859{
1860 i2ChanStrPtr pCh = tty->driver_data;
1861 unsigned long flags;
1862
1863 ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
1864
1865#ifdef IP2DEBUG_WRITE
1866 printk (KERN_DEBUG "IP2: flush buffer\n" );
1867#endif
1868 WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
1869 pCh->Pbuf_stuff = 0;
1870 WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
1871 i2FlushOutput( pCh );
1872 ip2_owake(tty);
1873
1874 ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
1875
1876}
1877
1878/******************************************************************************/
1879/* Function: ip2_wait_until_sent() */
1880/* Parameters: Pointer to tty structure */
1881/* Timeout for wait. */
1882/* Returns: Nothing */
1883/* */
1884/* Description: */
1885/* This function is used in place of the normal tty_wait_until_sent, which */
1886/* only waits for the driver buffers to be empty (or rather, those buffers */
1887/* reported by chars_in_buffer) which doesn't work for IP2 due to the */
1888/* indeterminate number of bytes buffered on the board. */
1889/******************************************************************************/
1890static void
1891ip2_wait_until_sent ( PTTY tty, int timeout )
1892{
1893 int i = jiffies;
1894 i2ChanStrPtr pCh = tty->driver_data;
1895
1896 tty_wait_until_sent(tty, timeout );
1897 if ( (i = timeout - (jiffies -i)) > 0)
1898 i2DrainOutput( pCh, i );
1899}
1900
1901/******************************************************************************/
1902/******************************************************************************/
1903/* Device Input Section */
1904/******************************************************************************/
1905/******************************************************************************/
1906
1907/******************************************************************************/
1908/* Function: ip2_throttle() */
1909/* Parameters: Pointer to tty structure */
1910/* Returns: Nothing */
1911/* */
1912/* Description: */
1913/* */
1914/* */
1915/******************************************************************************/
1916static void
1917ip2_throttle ( PTTY tty )
1918{
1919 i2ChanStrPtr pCh = tty->driver_data;
1920
1921#ifdef IP2DEBUG_READ
1922 printk (KERN_DEBUG "IP2: throttle\n" );
1923#endif
1924 /*
1925 * Signal the poll/interrupt handlers not to forward incoming data to
1926 * the line discipline. This will cause the buffers to fill up in the
1927 * library and thus cause the library routines to send the flow control
1928 * stuff.
1929 */
1930 pCh->throttled = 1;
1931}
1932
1933/******************************************************************************/
1934/* Function: ip2_unthrottle() */
1935/* Parameters: Pointer to tty structure */
1936/* Returns: Nothing */
1937/* */
1938/* Description: */
1939/* */
1940/* */
1941/******************************************************************************/
1942static void
1943ip2_unthrottle ( PTTY tty )
1944{
1945 i2ChanStrPtr pCh = tty->driver_data;
1946 unsigned long flags;
1947
1948#ifdef IP2DEBUG_READ
1949 printk (KERN_DEBUG "IP2: unthrottle\n" );
1950#endif
1951
1952 /* Pass incoming data up to the line discipline again. */
1953 pCh->throttled = 0;
1954 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1955 serviceOutgoingFifo( pCh->pMyBord );
1956 READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags)
1957 if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
1958 READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
1959#ifdef IP2DEBUG_READ
1960 printk (KERN_DEBUG "i2Input called from unthrottle\n" );
1961#endif
1962 i2Input( pCh );
1963 } else
1964 READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
1965}
1966
1967static void
1968ip2_start ( PTTY tty )
1969{
1970 i2ChanStrPtr pCh = DevTable[tty->index];
1971
1972 i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
1973 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
1974 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
1975#ifdef IP2DEBUG_WRITE
1976 printk (KERN_DEBUG "IP2: start tx\n" );
1977#endif
1978}
1979
1980static void
1981ip2_stop ( PTTY tty )
1982{
1983 i2ChanStrPtr pCh = DevTable[tty->index];
1984
1985 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
1986#ifdef IP2DEBUG_WRITE
1987 printk (KERN_DEBUG "IP2: stop tx\n" );
1988#endif
1989}
1990
1991/******************************************************************************/
1992/* Device Ioctl Section */
1993/******************************************************************************/
1994
1995static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
1996{
1997 i2ChanStrPtr pCh = DevTable[tty->index];
d9e39538 1998#ifdef ENABLE_DSSNOW
1da177e4 1999 wait_queue_t wait;
d9e39538 2000#endif
1da177e4
LT		 2001
2002 if (pCh == NULL)
2003 return -ENODEV;
2004
2005/*
2006 FIXME - the following code is causing a NULL pointer dereference in
2007 2.3.51 in an interrupt handler. It's suppose to prompt the board
2008 to return the DSS signal status immediately. Why doesn't it do
2009 the same thing in 2.2.14?
2010*/
2011
2012/* This thing is still busted in the 1.2.12 driver on 2.4.x
2013 and even hoses the serial console so the oops can be trapped.
2014 /\/\|=mhw=|\/\/ */
2015
2016#ifdef ENABLE_DSSNOW
2017 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
2018
2019 init_waitqueue_entry(&wait, current);
2020 add_wait_queue(&pCh->dss_now_wait, &wait);
2021 set_current_state( TASK_INTERRUPTIBLE );
2022
2023 serviceOutgoingFifo( pCh->pMyBord );
2024
2025 schedule();
2026
2027 set_current_state( TASK_RUNNING );
2028 remove_wait_queue(&pCh->dss_now_wait, &wait);
2029
2030 if (signal_pending(current)) {
2031 return -EINTR;
2032 }
2033#endif
2034 return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
2035 | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
2036 | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0)
2037 | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0)
2038 | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0)
2039 | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0);
2040}
2041
2042static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
2043 unsigned int set, unsigned int clear)
2044{
2045 i2ChanStrPtr pCh = DevTable[tty->index];
2046
2047 if (pCh == NULL)
2048 return -ENODEV;
2049
2050 if (set & TIOCM_RTS) {
2051 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
2052 pCh->dataSetOut |= I2_RTS;
2053 }
2054 if (set & TIOCM_DTR) {
2055 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
2056 pCh->dataSetOut |= I2_DTR;
2057 }
2058
2059 if (clear & TIOCM_RTS) {
2060 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
2061 pCh->dataSetOut &= ~I2_RTS;
2062 }
2063 if (clear & TIOCM_DTR) {
2064 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
2065 pCh->dataSetOut &= ~I2_DTR;
2066 }
2067 serviceOutgoingFifo( pCh->pMyBord );
2068 return 0;
2069}
2070
2071/******************************************************************************/
2072/* Function: ip2_ioctl() */
2073/* Parameters: Pointer to tty structure */
2074/* Pointer to file structure */
2075/* Command */
2076/* Argument */
2077/* Returns: Success or failure */
2078/* */
2079/* Description: */
2080/* */
2081/* */
2082/******************************************************************************/
2083static int
2084ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
2085{
2086 wait_queue_t wait;
2087 i2ChanStrPtr pCh = DevTable[tty->index];
d9e39538 2088 i2eBordStrPtr pB;
1da177e4
LT		 2089 struct async_icount cprev, cnow; /* kernel counter temps */
2090 struct serial_icounter_struct __user *p_cuser;
2091 int rc = 0;
2092 unsigned long flags;
2093 void __user *argp = (void __user *)arg;
2094
d9e39538 2095 if ( pCh == NULL )
1da177e4 2096 return -ENODEV;
d9e39538
AC		 2097
2098 pB = pCh->pMyBord;
1da177e4
LT		 2099
2100 ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
2101
2102#ifdef IP2DEBUG_IOCTL
2103 printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
2104#endif
2105
2106 switch(cmd) {
2107 case TIOCGSERIAL:
2108
2109 ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
2110
2111 rc = get_serial_info(pCh, argp);
2112 if (rc)
2113 return rc;
2114 break;
2115
2116 case TIOCSSERIAL:
2117
2118 ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
2119
2120 rc = set_serial_info(pCh, argp);
2121 if (rc)
2122 return rc;
2123 break;
2124
2125 case TCXONC:
2126 rc = tty_check_change(tty);
2127 if (rc)
2128 return rc;
2129 switch (arg) {
2130 case TCOOFF:
2131 //return -ENOIOCTLCMD;
2132 break;
2133 case TCOON:
2134 //return -ENOIOCTLCMD;
2135 break;
2136 case TCIOFF:
2137 if (STOP_CHAR(tty) != __DISABLED_CHAR) {
2138 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2139 CMD_XMIT_NOW(STOP_CHAR(tty)));
2140 }
2141 break;
2142 case TCION:
2143 if (START_CHAR(tty) != __DISABLED_CHAR) {
2144 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
2145 CMD_XMIT_NOW(START_CHAR(tty)));
2146 }
2147 break;
2148 default:
2149 return -EINVAL;
2150 }
2151 return 0;
2152
2153 case TCSBRK: /* SVID version: non-zero arg --> no break */
2154 rc = tty_check_change(tty);
2155
2156 ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
2157
2158 if (!rc) {
2159 ip2_wait_until_sent(tty,0);
2160 if (!arg) {
2161 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
2162 serviceOutgoingFifo( pCh->pMyBord );
2163 }
2164 }
2165 break;
2166
2167 case TCSBRKP: /* support for POSIX tcsendbreak() */
2168 rc = tty_check_change(tty);
2169
2170 ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
2171
2172 if (!rc) {
2173 ip2_wait_until_sent(tty,0);
2174 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2175 CMD_SEND_BRK(arg ? arg*100 : 250));
2176 serviceOutgoingFifo ( pCh->pMyBord );
2177 }
2178 break;
2179
2180 case TIOCGSOFTCAR:
2181
2182 ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
2183
2184 rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
2185 if (rc)
2186 return rc;
2187 break;
2188
2189 case TIOCSSOFTCAR:
2190
2191 ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
2192
2193 rc = get_user(arg,(unsigned long __user *) argp);
2194 if (rc)
2195 return rc;
2196 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
2197 | (arg ? CLOCAL : 0));
2198
2199 break;
2200
2201 /*
2202 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask
2203 * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS
2204 * for masking). Caller should use TIOCGICOUNT to see which one it was
2205 */
2206 case TIOCMIWAIT:
d9e39538 2207 WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
1da177e4 2208 cprev = pCh->icount; /* note the counters on entry */
d9e39538 2209 WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags);
1da177e4
LT		 2210 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4,
2211 CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP);
2212 init_waitqueue_entry(&wait, current);
2213 add_wait_queue(&pCh->delta_msr_wait, &wait);
2214 set_current_state( TASK_INTERRUPTIBLE );
2215
2216 serviceOutgoingFifo( pCh->pMyBord );
2217 for(;;) {
2218 ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
2219
2220 schedule();
2221
2222 ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
2223
2224 /* see if a signal did it */
2225 if (signal_pending(current)) {
2226 rc = -ERESTARTSYS;
2227 break;
2228 }
d9e39538 2229 WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
1da177e4 2230 cnow = pCh->icount; /* atomic copy */
d9e39538 2231 WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags);
1da177e4
LT		 2232 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2233 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
2234 rc = -EIO; /* no change => rc */
2235 break;
2236 }
2237 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2238 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2239 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2240 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2241 rc = 0;
2242 break;
2243 }
2244 cprev = cnow;
2245 }
2246 set_current_state( TASK_RUNNING );
2247 remove_wait_queue(&pCh->delta_msr_wait, &wait);
2248
2249 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3,
2250 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
2251 if ( ! (pCh->flags & ASYNC_CHECK_CD)) {
2252 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
2253 }
2254 serviceOutgoingFifo( pCh->pMyBord );
2255 return rc;
2256 break;
2257
2258 /*
2259 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2260 * Return: write counters to the user passed counter struct
2261 * NB: both 1->0 and 0->1 transitions are counted except for RI where
2262 * only 0->1 is counted. The controller is quite capable of counting
2263 * both, but this done to preserve compatibility with the standard
2264 * serial driver.
2265 */
2266 case TIOCGICOUNT:
2267 ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
2268
d9e39538 2269 WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
1da177e4 2270 cnow = pCh->icount;
d9e39538 2271 WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags);
1da177e4
LT		 2272 p_cuser = argp;
2273 rc = put_user(cnow.cts, &p_cuser->cts);
2274 rc = put_user(cnow.dsr, &p_cuser->dsr);
2275 rc = put_user(cnow.rng, &p_cuser->rng);
2276 rc = put_user(cnow.dcd, &p_cuser->dcd);
2277 rc = put_user(cnow.rx, &p_cuser->rx);
2278 rc = put_user(cnow.tx, &p_cuser->tx);
2279 rc = put_user(cnow.frame, &p_cuser->frame);
2280 rc = put_user(cnow.overrun, &p_cuser->overrun);
2281 rc = put_user(cnow.parity, &p_cuser->parity);
2282 rc = put_user(cnow.brk, &p_cuser->brk);
2283 rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
2284 break;
2285
2286 /*
2287 * The rest are not supported by this driver. By returning -ENOIOCTLCMD they
2288 * will be passed to the line discipline for it to handle.
2289 */
2290 case TIOCSERCONFIG:
2291 case TIOCSERGWILD:
2292 case TIOCSERGETLSR:
2293 case TIOCSERSWILD:
2294 case TIOCSERGSTRUCT:
2295 case TIOCSERGETMULTI:
2296 case TIOCSERSETMULTI:
2297
2298 default:
2299 ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
2300
2301 rc = -ENOIOCTLCMD;
2302 break;
2303 }
2304
2305 ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
2306
2307 return rc;
2308}
2309
2310/******************************************************************************/
2311/* Function: GetSerialInfo() */
2312/* Parameters: Pointer to channel structure */
2313/* Pointer to old termios structure */
2314/* Returns: Nothing */
2315/* */
2316/* Description: */
2317/* This is to support the setserial command, and requires processing of the */
2318/* standard Linux serial structure. */
2319/******************************************************************************/
2320static int
2321get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
2322{
2323 struct serial_struct tmp;
2324
2325 memset ( &tmp, 0, sizeof(tmp) );
2326 tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
2327 if (BID_HAS_654(tmp.type)) {
2328 tmp.type = PORT_16650;
2329 } else {
2330 tmp.type = PORT_CIRRUS;
2331 }
2332 tmp.line = pCh->port_index;
2333 tmp.port = pCh->pMyBord->i2eBase;
2334 tmp.irq = ip2config.irq[pCh->port_index/64];
2335 tmp.flags = pCh->flags;
2336 tmp.baud_base = pCh->BaudBase;
2337 tmp.close_delay = pCh->ClosingDelay;
2338 tmp.closing_wait = pCh->ClosingWaitTime;
2339 tmp.custom_divisor = pCh->BaudDivisor;
2340 return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
2341}
2342
2343/******************************************************************************/
2344/* Function: SetSerialInfo() */
2345/* Parameters: Pointer to channel structure */
2346/* Pointer to old termios structure */
2347/* Returns: Nothing */
2348/* */
2349/* Description: */
2350/* This function provides support for setserial, which uses the TIOCSSERIAL */
2351/* ioctl. Not all setserial parameters are relevant. If the user attempts to */
2352/* change the IRQ, address or type of the port the ioctl fails. */
2353/******************************************************************************/
2354static int
2355set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
2356{
2357 struct serial_struct ns;
2358 int old_flags, old_baud_divisor;
2359
2360 if (copy_from_user(&ns, new_info, sizeof (ns)))
2361 return -EFAULT;
2362
2363 /*
2364 * We don't allow setserial to change IRQ, board address, type or baud
2365 * base. Also line nunber as such is meaningless but we use it for our
2366 * array index so it is fixed also.
2367 */
2368 if ( (ns.irq != ip2config.irq[pCh->port_index])
2369 || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase)))
2370 || (ns.baud_base != pCh->BaudBase)
2371 || (ns.line != pCh->port_index) ) {
2372 return -EINVAL;
2373 }
2374
2375 old_flags = pCh->flags;
2376 old_baud_divisor = pCh->BaudDivisor;
2377
2378 if ( !capable(CAP_SYS_ADMIN) ) {
2379 if ( ( ns.close_delay != pCh->ClosingDelay ) ||
2380 ( (ns.flags & ~ASYNC_USR_MASK) !=
2381 (pCh->flags & ~ASYNC_USR_MASK) ) ) {
2382 return -EPERM;
2383 }
2384
2385 pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
2386 (ns.flags & ASYNC_USR_MASK);
2387 pCh->BaudDivisor = ns.custom_divisor;
2388 } else {
2389 pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
2390 (ns.flags & ASYNC_FLAGS);
2391 pCh->BaudDivisor = ns.custom_divisor;
2392 pCh->ClosingDelay = ns.close_delay * HZ/100;
2393 pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
2394 }
2395
2396 if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
2397 || (old_baud_divisor != pCh->BaudDivisor) ) {
2398 // Invalidate speed and reset parameters
2399 set_params( pCh, NULL );
2400 }
2401
2402 return 0;
2403}
2404
2405/******************************************************************************/
2406/* Function: ip2_set_termios() */
2407/* Parameters: Pointer to tty structure */
2408/* Pointer to old termios structure */
2409/* Returns: Nothing */
2410/* */
2411/* Description: */
2412/* */
2413/* */
2414/******************************************************************************/
2415static void
606d099c 2416ip2_set_termios( PTTY tty, struct ktermios *old_termios )
1da177e4
LT		 2417{
2418 i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
2419
2420#ifdef IP2DEBUG_IOCTL
2421 printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
2422#endif
2423
2424 set_params( pCh, old_termios );
2425}
2426
2427/******************************************************************************/
2428/* Function: ip2_set_line_discipline() */
2429/* Parameters: Pointer to tty structure */
2430/* Returns: Nothing */
2431/* */
2432/* Description: Does nothing */
2433/* */
2434/* */
2435/******************************************************************************/
2436static void
2437ip2_set_line_discipline ( PTTY tty )
2438{
2439#ifdef IP2DEBUG_IOCTL
2440 printk (KERN_DEBUG "IP2: set line discipline\n" );
2441#endif
2442
2443 ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
2444
2445}
2446
2447/******************************************************************************/
2448/* Function: SetLine Characteristics() */
2449/* Parameters: Pointer to channel structure */
2450/* Returns: Nothing */
2451/* */
2452/* Description: */
2453/* This routine is called to update the channel structure with the new line */
2454/* characteristics, and send the appropriate commands to the board when they */
2455/* change. */
2456/******************************************************************************/
2457static void
606d099c 2458set_params( i2ChanStrPtr pCh, struct ktermios *o_tios )
1da177e4
LT		 2459{
2460 tcflag_t cflag, iflag, lflag;
2461 char stop_char, start_char;
606d099c 2462 struct ktermios dummy;
1da177e4
LT		 2463
2464 lflag = pCh->pTTY->termios->c_lflag;
2465 cflag = pCh->pTTY->termios->c_cflag;
2466 iflag = pCh->pTTY->termios->c_iflag;
2467
2468 if (o_tios == NULL) {
2469 dummy.c_lflag = ~lflag;
2470 dummy.c_cflag = ~cflag;
2471 dummy.c_iflag = ~iflag;
2472 o_tios = &dummy;
2473 }
2474
2475 {
2476 switch ( cflag & CBAUD ) {
2477 case B0:
2478 i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
2479 pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
2480 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
2481 pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
2482 goto service_it;
2483 break;
2484 case B38400:
2485 /*
2486 * This is the speed that is overloaded with all the other high
2487 * speeds, depending upon the flag settings.
2488 */
2489 if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
2490 pCh->speed = CBR_57600;
2491 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
2492 pCh->speed = CBR_115200;
2493 } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
2494 pCh->speed = CBR_C1;
2495 } else {
2496 pCh->speed = CBR_38400;
2497 }
2498 break;
2499 case B50: pCh->speed = CBR_50; break;
2500 case B75: pCh->speed = CBR_75; break;
2501 case B110: pCh->speed = CBR_110; break;
2502 case B134: pCh->speed = CBR_134; break;
2503 case B150: pCh->speed = CBR_150; break;
2504 case B200: pCh->speed = CBR_200; break;
2505 case B300: pCh->speed = CBR_300; break;
2506 case B600: pCh->speed = CBR_600; break;
2507 case B1200: pCh->speed = CBR_1200; break;
2508 case B1800: pCh->speed = CBR_1800; break;
2509 case B2400: pCh->speed = CBR_2400; break;
2510 case B4800: pCh->speed = CBR_4800; break;
2511 case B9600: pCh->speed = CBR_9600; break;
2512 case B19200: pCh->speed = CBR_19200; break;
2513 case B57600: pCh->speed = CBR_57600; break;
2514 case B115200: pCh->speed = CBR_115200; break;
2515 case B153600: pCh->speed = CBR_153600; break;
2516 case B230400: pCh->speed = CBR_230400; break;
2517 case B307200: pCh->speed = CBR_307200; break;
2518 case B460800: pCh->speed = CBR_460800; break;
2519 case B921600: pCh->speed = CBR_921600; break;
2520 default: pCh->speed = CBR_9600; break;
2521 }
2522 if ( pCh->speed == CBR_C1 ) {
2523 // Process the custom speed parameters.
2524 int bps = pCh->BaudBase / pCh->BaudDivisor;
2525 if ( bps == 921600 ) {
2526 pCh->speed = CBR_921600;
2527 } else {
2528 bps = bps/10;
2529 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
2530 }
2531 }
2532 i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
2533
2534 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
2535 pCh->dataSetOut |= (I2_DTR | I2_RTS);
2536 }
2537 if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag))
2538 {
2539 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2540 CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
2541 }
2542 if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag))
2543 {
2544 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
2545 CMD_SETPAR(
2546 (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
2547 )
2548 );
2549 }
2550 /* byte size and parity */
2551 if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag))
2552 {
2553 int datasize;
2554 switch ( cflag & CSIZE ) {
2555 case CS5: datasize = CSZ_5; break;
2556 case CS6: datasize = CSZ_6; break;
2557 case CS7: datasize = CSZ_7; break;
2558 case CS8: datasize = CSZ_8; break;
2559 default: datasize = CSZ_5; break; /* as per serial.c */
2560 }
2561 i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
2562 }
2563 /* Process CTS flow control flag setting */
2564 if ( (cflag & CRTSCTS) ) {
2565 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2566 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
2567 } else {
2568 i2QueueCommands(PTYPE_INLINE, pCh, 100,
2569 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
2570 }
2571 //
2572 // Process XON/XOFF flow control flags settings
2573 //
2574 stop_char = STOP_CHAR(pCh->pTTY);
2575 start_char = START_CHAR(pCh->pTTY);
2576
2577 //////////// can't be \000
2578 if (stop_char == __DISABLED_CHAR )
2579 {
2580 stop_char = ~__DISABLED_CHAR;
2581 }
2582 if (start_char == __DISABLED_CHAR )
2583 {
2584 start_char = ~__DISABLED_CHAR;
2585 }
2586 /////////////////////////////////
2587
2588 if ( o_tios->c_cc[VSTART] != start_char )
2589 {
2590 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
2591 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
2592 }
2593 if ( o_tios->c_cc[VSTOP] != stop_char )
2594 {
2595 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
2596 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
2597 }
2598 if (stop_char == __DISABLED_CHAR )
2599 {
2600 stop_char = ~__DISABLED_CHAR; //TEST123
2601 goto no_xoff;
2602 }
2603 if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF)))
2604 {
2605 if ( iflag & IXOFF ) { // Enable XOFF output flow control
2606 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
2607 } else { // Disable XOFF output flow control
2608no_xoff:
2609 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
2610 }
2611 }
2612 if (start_char == __DISABLED_CHAR )
2613 {
2614 goto no_xon;
2615 }
2616 if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY)))
2617 {
2618 if ( iflag & IXON ) {
2619 if ( iflag & IXANY ) { // Enable XON/XANY output flow control
2620 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
2621 } else { // Enable XON output flow control
2622 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
2623 }
2624 } else { // Disable XON output flow control
2625no_xon:
2626 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
2627 }
2628 }
2629 if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) )
2630 {
2631 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2632 CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
2633 }
2634 if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) )
2635 {
2636 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
2637 CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
2638 }
2639
2640 if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR))
2641 ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) )
2642 {
2643 char brkrpt = 0;
2644 char parrpt = 0;
2645
2646 if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
2647 /* Ignore breaks altogether */
2648 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
2649 } else {
2650 if ( iflag & BRKINT ) {
2651 if ( iflag & PARMRK ) {
2652 brkrpt = 0x0a; // exception an inline triple
2653 } else {
2654 brkrpt = 0x1a; // exception and NULL
2655 }
2656 brkrpt |= 0x04; // flush input
2657 } else {
2658 if ( iflag & PARMRK ) {
2659 brkrpt = 0x0b; //POSIX triple \0377 \0 \0
2660 } else {
2661 brkrpt = 0x01; // Null only
2662 }
2663 }
2664 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
2665 }
2666
2667 if (iflag & IGNPAR) {
2668 parrpt = 0x20;
2669 /* would be 2 for not cirrus bug */
2670 /* would be 0x20 cept for cirrus bug */
2671 } else {
2672 if ( iflag & PARMRK ) {
2673 /*
2674 * Replace error characters with 3-byte sequence (\0377,\0,char)
2675 */
2676 parrpt = 0x04 ;
2677 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
2678 } else {
2679 parrpt = 0x03;
2680 }
2681 }
2682 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
2683 }
2684 if (cflag & CLOCAL) {
2685 // Status reporting fails for DCD if this is off
2686 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
2687 pCh->flags &= ~ASYNC_CHECK_CD;
2688 } else {
2689 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
2690 pCh->flags |= ASYNC_CHECK_CD;
2691 }
2692
1da177e4
LT		 2693service_it:
2694 i2DrainOutput( pCh, 100 );
2695}
2696
2697/******************************************************************************/
2698/* IPL Device Section */
2699/******************************************************************************/
2700
2701/******************************************************************************/
2702/* Function: ip2_ipl_read() */
2703/* Parameters: Pointer to device inode */
2704/* Pointer to file structure */
2705/* Pointer to data */
2706/* Number of bytes to read */
2707/* Returns: Success or failure */
2708/* */
2709/* Description: Ugly */
2710/* */
2711/* */
2712/******************************************************************************/
2713
2714static
2715ssize_t
2716ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
2717{
a7113a96 2718 unsigned int minor = iminor(pFile->f_path.dentry->d_inode);
1da177e4
LT		 2719 int rc = 0;
2720
2721#ifdef IP2DEBUG_IPL
2722 printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
2723#endif
2724
2725 switch( minor ) {
2726 case 0: // IPL device
2727 rc = -EINVAL;
2728 break;
2729 case 1: // Status dump
2730 rc = -EINVAL;
2731 break;
2732 case 2: // Ping device
2733 rc = -EINVAL;
2734 break;
2735 case 3: // Trace device
2736 rc = DumpTraceBuffer ( pData, count );
2737 break;
2738 case 4: // Trace device
2739 rc = DumpFifoBuffer ( pData, count );
2740 break;
2741 default:
2742 rc = -ENODEV;
2743 break;
2744 }
2745 return rc;
2746}
2747
2748static int
2749DumpFifoBuffer ( char __user *pData, int count )
2750{
2751#ifdef DEBUG_FIFO
2752 int rc;
2753 rc = copy_to_user(pData, DBGBuf, count);
2754
2755 printk(KERN_DEBUG "Last index %d\n", I );
2756
2757 return count;
2758#endif /* DEBUG_FIFO */
2759 return 0;
2760}
2761
2762static int
2763DumpTraceBuffer ( char __user *pData, int count )
2764{
2765#ifdef IP2DEBUG_TRACE
2766 int rc;
2767 int dumpcount;
2768 int chunk;
2769 int *pIndex = (int __user *)pData;
2770
2771 if ( count < (sizeof(int) * 6) ) {
2772 return -EIO;
2773 }
2774 rc = put_user(tracewrap, pIndex );
2775 rc = put_user(TRACEMAX, ++pIndex );
2776 rc = put_user(tracestrip, ++pIndex );
2777 rc = put_user(tracestuff, ++pIndex );
2778 pData += sizeof(int) * 6;
2779 count -= sizeof(int) * 6;
2780
2781 dumpcount = tracestuff - tracestrip;
2782 if ( dumpcount < 0 ) {
2783 dumpcount += TRACEMAX;
2784 }
2785 if ( dumpcount > count ) {
2786 dumpcount = count;
2787 }
2788 chunk = TRACEMAX - tracestrip;
2789 if ( dumpcount > chunk ) {
2790 rc = copy_to_user(pData, &tracebuf[tracestrip],
2791 chunk * sizeof(tracebuf[0]) );
2792 pData += chunk * sizeof(tracebuf[0]);
2793 tracestrip = 0;
2794 chunk = dumpcount - chunk;
2795 } else {
2796 chunk = dumpcount;
2797 }
2798 rc = copy_to_user(pData, &tracebuf[tracestrip],
2799 chunk * sizeof(tracebuf[0]) );
2800 tracestrip += chunk;
2801 tracewrap = 0;
2802
2803 rc = put_user(tracestrip, ++pIndex );
2804 rc = put_user(tracestuff, ++pIndex );
2805
2806 return dumpcount;
2807#else
2808 return 0;
2809#endif
2810}
2811
2812/******************************************************************************/
2813/* Function: ip2_ipl_write() */
2814/* Parameters: */
2815/* Pointer to file structure */
2816/* Pointer to data */
2817/* Number of bytes to write */
2818/* Returns: Success or failure */
2819/* */
2820/* Description: */
2821/* */
2822/* */
2823/******************************************************************************/
2824static ssize_t
2825ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
2826{
2827#ifdef IP2DEBUG_IPL
2828 printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
2829#endif
2830 return 0;
2831}
2832
2833/******************************************************************************/
2834/* Function: ip2_ipl_ioctl() */
2835/* Parameters: Pointer to device inode */
2836/* Pointer to file structure */
2837/* Command */
2838/* Argument */
2839/* Returns: Success or failure */
2840/* */
2841/* Description: */
2842/* */
2843/* */
2844/******************************************************************************/
2845static int
2846ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg )
2847{
2848 unsigned int iplminor = iminor(pInode);
2849 int rc = 0;
2850 void __user *argp = (void __user *)arg;
2851 ULONG __user *pIndex = argp;
2852 i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
2853 i2ChanStrPtr pCh;
2854
2855#ifdef IP2DEBUG_IPL
2856 printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
2857#endif
2858
2859 switch ( iplminor ) {
2860 case 0: // IPL device
2861 rc = -EINVAL;
2862 break;
2863 case 1: // Status dump
2864 case 5:
2865 case 9:
2866 case 13:
2867 switch ( cmd ) {
2868 case 64: /* Driver - ip2stat */
2869 rc = put_user(ip2_tty_driver->refcount, pIndex++ );
2870 rc = put_user(irq_counter, pIndex++ );
2871 rc = put_user(bh_counter, pIndex++ );
2872 break;
2873
2874 case 65: /* Board - ip2stat */
2875 if ( pB ) {
2876 rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
2877 rc = put_user(INB(pB->i2eStatus),
2878 (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
2879 } else {
2880 rc = -ENODEV;
2881 }
2882 break;
2883
2884 default:
2885 if (cmd < IP2_MAX_PORTS) {
2886 pCh = DevTable[cmd];
2887 if ( pCh )
2888 {
2889 rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
2890 } else {
2891 rc = -ENODEV;
2892 }
2893 } else {
2894 rc = -EINVAL;
2895 }
2896 }
2897 break;
2898
2899 case 2: // Ping device
2900 rc = -EINVAL;
2901 break;
2902 case 3: // Trace device
def9391c
AM		 2903 /*
2904 * akpm: This used to write a whole bunch of function addresses
2905 * to userspace, which generated lots of put_user() warnings.
2906 * I killed it all. Just return "success" and don't do
2907 * anything.
2908 */
2909 if (cmd == 1)
2910 rc = 0;
2911 else
1da177e4 2912 rc = -EINVAL;
1da177e4
LT		 2913 break;
2914
2915 default:
2916 rc = -ENODEV;
2917 break;
2918 }
2919 return rc;
2920}
2921
2922/******************************************************************************/
2923/* Function: ip2_ipl_open() */
2924/* Parameters: Pointer to device inode */
2925/* Pointer to file structure */
2926/* Returns: Success or failure */
2927/* */
2928/* Description: */
2929/* */
2930/* */
2931/******************************************************************************/
2932static int
2933ip2_ipl_open( struct inode *pInode, struct file *pFile )
2934{
2935 unsigned int iplminor = iminor(pInode);
2936 i2eBordStrPtr pB;
2937 i2ChanStrPtr pCh;
2938
2939#ifdef IP2DEBUG_IPL
2940 printk (KERN_DEBUG "IP2IPL: open\n" );
2941#endif
2942
2943 switch(iplminor) {
2944 // These are the IPL devices
2945 case 0:
2946 case 4:
2947 case 8:
2948 case 12:
2949 break;
2950
2951 // These are the status devices
2952 case 1:
2953 case 5:
2954 case 9:
2955 case 13:
2956 break;
2957
2958 // These are the debug devices
2959 case 2:
2960 case 6:
2961 case 10:
2962 case 14:
2963 pB = i2BoardPtrTable[iplminor / 4];
2964 pCh = (i2ChanStrPtr) pB->i2eChannelPtr;
2965 break;
2966
2967 // This is the trace device
2968 case 3:
2969 break;
2970 }
2971 return 0;
2972}
2973/******************************************************************************/
2974/* Function: ip2_read_procmem */
2975/* Parameters: */
2976/* */
2977/* Returns: Length of output */
2978/* */
2979/* Description: */
2980/* Supplies some driver operating parameters */
2981/* Not real useful unless your debugging the fifo */
2982/* */
2983/******************************************************************************/
2984
2985#define LIMIT (PAGE_SIZE - 120)
2986
2987static int
2988ip2_read_procmem(char *buf, char **start, off_t offset, int len)
2989{
2990 i2eBordStrPtr pB;
2991 i2ChanStrPtr pCh;
2992 PTTY tty;
2993 int i;
2994
2995 len = 0;
2996
2997#define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n"
2998#define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n"
2999#define FMTLIN3 " 0x%04x 0x%04x rc flow\n"
3000
3001 len += sprintf(buf+len,"\n");
3002
3003 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
3004 pB = i2BoardPtrTable[i];
3005 if ( pB ) {
3006 len += sprintf(buf+len,"board %d:\n",i);
3007 len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n",
3008 pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
3009 }
3010 }
3011
3012 len += sprintf(buf+len,"#: tty flags, port flags, cflags, iflags\n");
3013 for (i=0; i < IP2_MAX_PORTS; i++) {
3014 if (len > LIMIT)
3015 break;
3016 pCh = DevTable[i];
3017 if (pCh) {
3018 tty = pCh->pTTY;
3019 if (tty && tty->count) {
3020 len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags,
3021 tty->termios->c_cflag,tty->termios->c_iflag);
3022
3023 len += sprintf(buf+len,FMTLIN2,
3024 pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
3025 len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room);
3026 }
3027 }
3028 }
3029 return len;
3030}
3031
3032/*
3033 * This is the handler for /proc/tty/driver/ip2
3034 *
3035 * This stretch of code has been largely plagerized from at least three
3036 * different sources including ip2mkdev.c and a couple of other drivers.
3037 * The bugs are all mine. :-) =mhw=
3038 */
3039static int ip2_read_proc(char *page, char **start, off_t off,
3040 int count, int *eof, void *data)
3041{
3042 int i, j, box;
3043 int len = 0;
3044 int boxes = 0;
3045 int ports = 0;
3046 int tports = 0;
3047 off_t begin = 0;
3048 i2eBordStrPtr pB;
3049
3050 len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion );
3051 len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
3052 IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
3053 IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
3054
3055 for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
3056 /* This need to be reset for a board by board count... */
3057 boxes = 0;
3058 pB = i2BoardPtrTable[i];
3059 if( pB ) {
3060 switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED )
3061 {
3062 case POR_ID_FIIEX:
3063 len += sprintf( page+len, "Board %d: EX ports=", i );
3064 for( box = 0; box < ABS_MAX_BOXES; ++box )
3065 {
3066 ports = 0;
3067
3068 if( pB->i2eChannelMap[box] != 0 ) ++boxes;
3069 for( j = 0; j < ABS_BIGGEST_BOX; ++j )
3070 {
3071 if( pB->i2eChannelMap[box] & 1<< j ) {
3072 ++ports;
3073 }
3074 }
3075 len += sprintf( page+len, "%d,", ports );
3076 tports += ports;
3077 }
3078
3079 --len; /* Backup over that last comma */
3080
3081 len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 );
3082 break;
3083
3084 case POR_ID_II_4:
3085 len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i );
3086 tports = ports = 4;
3087 break;
3088
3089 case POR_ID_II_8:
3090 len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i );
3091 tports = ports = 8;
3092 break;
3093
3094 case POR_ID_II_8R:
3095 len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i );
3096 tports = ports = 8;
3097 break;
3098
3099 default:
3100 len += sprintf(page+len, "Board %d: unknown", i );
3101 /* Don't try and probe for minor numbers */
3102 tports = ports = 0;
3103 }
3104
3105 } else {
3106 /* Don't try and probe for minor numbers */
3107 len += sprintf(page+len, "Board %d: vacant", i );
3108 tports = ports = 0;
3109 }
3110
3111 if( tports ) {
3112 len += sprintf(page+len, " minors=" );
3113
3114 for ( box = 0; box < ABS_MAX_BOXES; ++box )
3115 {
3116 for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
3117 {
3118 if ( pB->i2eChannelMap[box] & (1 << j) )
3119 {
3120 len += sprintf (page+len,"%d,",
3121 j + ABS_BIGGEST_BOX *
3122 (box+i*ABS_MAX_BOXES));
3123 }
3124 }
3125 }
3126
3127 page[ len - 1 ] = '\n'; /* Overwrite that last comma */
3128 } else {
3129 len += sprintf (page+len,"\n" );
3130 }
3131
3132 if (len+begin > off+count)
3133 break;
3134 if (len+begin < off) {
3135 begin += len;
3136 len = 0;
3137 }
3138 }
3139
3140 if (i >= IP2_MAX_BOARDS)
3141 *eof = 1;
3142 if (off >= len+begin)
3143 return 0;
3144
3145 *start = page + (off-begin);
3146 return ((count < begin+len-off) ? count : begin+len-off);
3147 }
3148
3149/******************************************************************************/
3150/* Function: ip2trace() */
3151/* Parameters: Value to add to trace buffer */
3152/* Returns: Nothing */
3153/* */
3154/* Description: */
3155/* */
3156/* */
3157/******************************************************************************/
3158#ifdef IP2DEBUG_TRACE
3159void
3160ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
3161{
3162 long flags;
3163 unsigned long *pCode = &codes;
3164 union ip2breadcrumb bc;
3165 i2ChanStrPtr pCh;
3166
3167
3168 tracebuf[tracestuff++] = jiffies;
3169 if ( tracestuff == TRACEMAX ) {
3170 tracestuff = 0;
3171 }
3172 if ( tracestuff == tracestrip ) {
3173 if ( ++tracestrip == TRACEMAX ) {
3174 tracestrip = 0;
3175 }
3176 ++tracewrap;
3177 }
3178
3179 bc.hdr.port = 0xff & pn;
3180 bc.hdr.cat = cat;
3181 bc.hdr.codes = (unsigned char)( codes & 0xff );
3182 bc.hdr.label = label;
3183 tracebuf[tracestuff++] = bc.value;
3184
3185 for (;;) {
3186 if ( tracestuff == TRACEMAX ) {
3187 tracestuff = 0;
3188 }
3189 if ( tracestuff == tracestrip ) {
3190 if ( ++tracestrip == TRACEMAX ) {
3191 tracestrip = 0;
3192 }
3193 ++tracewrap;
3194 }
3195
3196 if ( !codes-- )
3197 break;
3198
3199 tracebuf[tracestuff++] = *++pCode;
3200 }
3201}
3202#endif
3203
3204
3205MODULE_LICENSE("GPL");
eb0e71c7
CS		 3206
3207static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
3208 { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) },
3209 { }
3210};
3211
3212MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);
Linux 6.x block layer and io_uring tree(s)