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divasmain.c
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1 /* $Id: divasmain.c,v 1.55.4.6 2005/02/09 19:28:20 armin Exp $
2  *
3  * Low level driver for Eicon DIVA Server ISDN cards.
4  *
5  * Copyright 2000-2003 by Armin Schindler ([email protected])
6  * Copyright 2000-2003 Cytronics & Melware ([email protected])
7  *
8  * This software may be used and distributed according to the terms
9  * of the GNU General Public License, incorporated herein by reference.
10  */
11 
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <asm/uaccess.h>
16 #include <asm/io.h>
17 #include <linux/ioport.h>
18 #include <linux/pci.h>
19 #include <linux/interrupt.h>
20 #include <linux/list.h>
21 #include <linux/poll.h>
22 #include <linux/kmod.h>
23 
24 #include "platform.h"
25 #undef ID_MASK
26 #undef N_DATA
27 #include "pc.h"
28 #include "di_defs.h"
29 #include "divasync.h"
30 #include "diva.h"
31 #include "di.h"
32 #include "io.h"
33 #include "xdi_msg.h"
34 #include "xdi_adapter.h"
35 #include "xdi_vers.h"
36 #include "diva_dma.h"
37 #include "diva_pci.h"
38 
39 static char *main_revision = "$Revision: 1.55.4.6 $";
40 
41 static int major;
42 
43 static int dbgmask;
44 
45 MODULE_DESCRIPTION("Kernel driver for Eicon DIVA Server cards");
46 MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
47 MODULE_LICENSE("GPL");
48 
49 module_param(dbgmask, int, 0);
50 MODULE_PARM_DESC(dbgmask, "initial debug mask");
51 
52 static char *DRIVERNAME =
53  "Eicon DIVA Server driver (http://www.melware.net)";
54 static char *DRIVERLNAME = "divas";
55 static char *DEVNAME = "Divas";
56 char *DRIVERRELEASE_DIVAS = "2.0";
57 
58 extern irqreturn_t diva_os_irq_wrapper(int irq, void *context);
59 extern int create_divas_proc(void);
60 extern void remove_divas_proc(void);
61 extern void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf);
62 extern int divasfunc_init(int dbgmask);
63 extern void divasfunc_exit(void);
64 
65 typedef struct _diva_os_thread_dpc {
69 
70 /* --------------------------------------------------------------------------
71  PCI driver interface section
72  -------------------------------------------------------------------------- */
73 /*
74  vendor, device Vendor and device ID to match (or PCI_ANY_ID)
75  subvendor, Subsystem vendor and device ID to match (or PCI_ANY_ID)
76  subdevice
77  class, Device class to match. The class_mask tells which bits
78  class_mask of the class are honored during the comparison.
79  driver_data Data private to the driver.
80 */
81 
82 #if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2)
83 #define PCI_DEVICE_ID_EICON_MAESTRAP_2 0xE015
84 #endif
85 
86 #if !defined(PCI_DEVICE_ID_EICON_4BRI_VOIP)
87 #define PCI_DEVICE_ID_EICON_4BRI_VOIP 0xE016
88 #endif
89 
90 #if !defined(PCI_DEVICE_ID_EICON_4BRI_2_VOIP)
91 #define PCI_DEVICE_ID_EICON_4BRI_2_VOIP 0xE017
92 #endif
93 
94 #if !defined(PCI_DEVICE_ID_EICON_BRI2M_2)
95 #define PCI_DEVICE_ID_EICON_BRI2M_2 0xE018
96 #endif
97 
98 #if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP)
99 #define PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP 0xE019
100 #endif
101 
102 #if !defined(PCI_DEVICE_ID_EICON_2F)
103 #define PCI_DEVICE_ID_EICON_2F 0xE01A
104 #endif
105 
106 #if !defined(PCI_DEVICE_ID_EICON_BRI2M_2_VOIP)
107 #define PCI_DEVICE_ID_EICON_BRI2M_2_VOIP 0xE01B
108 #endif
109 
110 /*
111  This table should be sorted by PCI device ID
112 */
113 static struct pci_device_id divas_pci_tbl[] = {
114  /* Diva Server BRI-2M PCI 0xE010 */
117  /* Diva Server 4BRI-8M PCI 0xE012 */
120  /* Diva Server 4BRI-8M 2.0 PCI 0xE013 */
123  /* Diva Server PRI-30M PCI 0xE014 */
126  /* Diva Server PRI 2.0 adapter 0xE015 */
129  /* Diva Server Voice 4BRI-8M PCI 0xE016 */
132  /* Diva Server Voice 4BRI-8M 2.0 PCI 0xE017 */
135  /* Diva Server BRI-2M 2.0 PCI 0xE018 */
138  /* Diva Server Voice PRI 2.0 PCI 0xE019 */
141  /* Diva Server 2FX 0xE01A */
144  /* Diva Server Voice BRI-2M 2.0 PCI 0xE01B */
147  { 0, } /* 0 terminated list. */
148 };
149 MODULE_DEVICE_TABLE(pci, divas_pci_tbl);
150 
151 static int divas_init_one(struct pci_dev *pdev,
152  const struct pci_device_id *ent);
153 static void __devexit divas_remove_one(struct pci_dev *pdev);
154 
155 static struct pci_driver diva_pci_driver = {
156  .name = "divas",
157  .probe = divas_init_one,
158  .remove = __devexit_p(divas_remove_one),
159  .id_table = divas_pci_tbl,
160 };
161 
162 /*********************************************************
163  ** little helper functions
164  *********************************************************/
165 static char *getrev(const char *revision)
166 {
167  char *rev;
168  char *p;
169  if ((p = strchr(revision, ':'))) {
170  rev = p + 2;
171  p = strchr(rev, '$');
172  *--p = 0;
173  } else
174  rev = "1.0";
175  return rev;
176 }
177 
178 void diva_log_info(unsigned char *format, ...)
179 {
180  va_list args;
181  unsigned char line[160];
182 
183  va_start(args, format);
184  vsnprintf(line, sizeof(line), format, args);
185  va_end(args);
186 
187  printk(KERN_INFO "%s: %s\n", DRIVERLNAME, line);
188 }
189 
190 void divas_get_version(char *p)
191 {
192  char tmprev[32];
193 
194  strcpy(tmprev, main_revision);
195  sprintf(p, "%s: %s(%s) %s(%s) major=%d\n", DRIVERLNAME, DRIVERRELEASE_DIVAS,
196  getrev(tmprev), diva_xdi_common_code_build, DIVA_BUILD, major);
197 }
198 
199 /* --------------------------------------------------------------------------
200  PCI Bus services
201  -------------------------------------------------------------------------- */
202 byte diva_os_get_pci_bus(void *pci_dev_handle)
203 {
204  struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle;
205  return ((byte) pdev->bus->number);
206 }
207 
208 byte diva_os_get_pci_func(void *pci_dev_handle)
209 {
210  struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle;
211  return ((byte) pdev->devfn);
212 }
213 
214 unsigned long divasa_get_pci_irq(unsigned char bus, unsigned char func,
215  void *pci_dev_handle)
216 {
217  unsigned char irq = 0;
218  struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
219 
220  irq = dev->irq;
221 
222  return ((unsigned long) irq);
223 }
224 
225 unsigned long divasa_get_pci_bar(unsigned char bus, unsigned char func,
226  int bar, void *pci_dev_handle)
227 {
228  unsigned long ret = 0;
229  struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
230 
231  if (bar < 6) {
232  ret = dev->resource[bar].start;
233  }
234 
235  DBG_TRC(("GOT BAR[%d]=%08x", bar, ret));
236 
237  {
238  unsigned long type = (ret & 0x00000001);
239  if (type & PCI_BASE_ADDRESS_SPACE_IO) {
240  DBG_TRC((" I/O"));
242  } else {
243  DBG_TRC((" memory"));
245  }
246  DBG_TRC((" final=%08x", ret));
247  }
248 
249  return (ret);
250 }
251 
252 void PCIwrite(byte bus, byte func, int offset, void *data, int length,
253  void *pci_dev_handle)
254 {
255  struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
256 
257  switch (length) {
258  case 1: /* byte */
259  pci_write_config_byte(dev, offset,
260  *(unsigned char *) data);
261  break;
262  case 2: /* word */
263  pci_write_config_word(dev, offset,
264  *(unsigned short *) data);
265  break;
266  case 4: /* dword */
267  pci_write_config_dword(dev, offset,
268  *(unsigned int *) data);
269  break;
270 
271  default: /* buffer */
272  if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */
273  dword *p = (dword *) data;
274  length /= 4;
275 
276  while (length--) {
277  pci_write_config_dword(dev, offset,
278  *(unsigned int *)
279  p++);
280  }
281  } else { /* copy as byte stream */
282  byte *p = (byte *) data;
283 
284  while (length--) {
285  pci_write_config_byte(dev, offset,
286  *(unsigned char *)
287  p++);
288  }
289  }
290  }
291 }
292 
293 void PCIread(byte bus, byte func, int offset, void *data, int length,
294  void *pci_dev_handle)
295 {
296  struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
297 
298  switch (length) {
299  case 1: /* byte */
300  pci_read_config_byte(dev, offset, (unsigned char *) data);
301  break;
302  case 2: /* word */
303  pci_read_config_word(dev, offset, (unsigned short *) data);
304  break;
305  case 4: /* dword */
306  pci_read_config_dword(dev, offset, (unsigned int *) data);
307  break;
308 
309  default: /* buffer */
310  if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */
311  dword *p = (dword *) data;
312  length /= 4;
313 
314  while (length--) {
315  pci_read_config_dword(dev, offset,
316  (unsigned int *)
317  p++);
318  }
319  } else { /* copy as byte stream */
320  byte *p = (byte *) data;
321 
322  while (length--) {
323  pci_read_config_byte(dev, offset,
324  (unsigned char *)
325  p++);
326  }
327  }
328  }
329 }
330 
331 /*
332  Init map with DMA pages. It is not problem if some allocations fail -
333  the channels that will not get one DMA page will use standard PIO
334  interface
335 */
336 static void *diva_pci_alloc_consistent(struct pci_dev *hwdev,
337  size_t size,
339  void **addr_handle)
340 {
341  void *addr = pci_alloc_consistent(hwdev, size, dma_handle);
342 
343  *addr_handle = addr;
344 
345  return (addr);
346 }
347 
348 void diva_init_dma_map(void *hdev,
349  struct _diva_dma_map_entry **ppmap, int nentries)
350 {
351  struct pci_dev *pdev = (struct pci_dev *) hdev;
352  struct _diva_dma_map_entry *pmap =
353  diva_alloc_dma_map(hdev, nentries);
354 
355  if (pmap) {
356  int i;
358  void *cpu_addr;
359  void *addr_handle;
360 
361  for (i = 0; i < nentries; i++) {
362  if (!(cpu_addr = diva_pci_alloc_consistent(pdev,
363  PAGE_SIZE,
364  &dma_handle,
365  &addr_handle)))
366  {
367  break;
368  }
369  diva_init_dma_map_entry(pmap, i, cpu_addr,
370  (dword) dma_handle,
371  addr_handle);
372  DBG_TRC(("dma map alloc [%d]=(%08lx:%08x:%08lx)",
373  i, (unsigned long) cpu_addr,
374  (dword) dma_handle,
375  (unsigned long) addr_handle))}
376  }
377 
378  *ppmap = pmap;
379 }
380 
381 /*
382  Free all contained in the map entries and memory used by the map
383  Should be always called after adapter removal from DIDD array
384 */
385 void diva_free_dma_map(void *hdev, struct _diva_dma_map_entry *pmap)
386 {
387  struct pci_dev *pdev = (struct pci_dev *) hdev;
388  int i;
390  void *cpu_addr;
392  void *addr_handle;
393 
394  for (i = 0; (pmap != NULL); i++) {
395  diva_get_dma_map_entry(pmap, i, &cpu_addr, &phys_addr);
396  if (!cpu_addr) {
397  break;
398  }
399  addr_handle = diva_get_entry_handle(pmap, i);
400  dma_handle = (dma_addr_t) phys_addr;
401  pci_free_consistent(pdev, PAGE_SIZE, addr_handle,
402  dma_handle);
403  DBG_TRC(("dma map free [%d]=(%08lx:%08x:%08lx)", i,
404  (unsigned long) cpu_addr, (dword) dma_handle,
405  (unsigned long) addr_handle))
406  }
407 
408  diva_free_dma_mapping(pmap);
409 }
410 
411 
412 /*********************************************************
413  ** I/O port utilities
414  *********************************************************/
415 
416 int
417 diva_os_register_io_port(void *adapter, int on, unsigned long port,
418  unsigned long length, const char *name, int id)
419 {
420  if (on) {
421  if (!request_region(port, length, name)) {
422  DBG_ERR(("A: I/O: can't register port=%08x", port))
423  return (-1);
424  }
425  } else {
426  release_region(port, length);
427  }
428  return (0);
429 }
430 
431 void __iomem *divasa_remap_pci_bar(diva_os_xdi_adapter_t *a, int id, unsigned long bar, unsigned long area_length)
432 {
433  void __iomem *ret = ioremap(bar, area_length);
434  DBG_TRC(("remap(%08x)->%p", bar, ret));
435  return (ret);
436 }
437 
439 {
440  if (bar) {
441  iounmap(bar);
442  }
443 }
444 
445 /*********************************************************
446  ** I/O port access
447  *********************************************************/
449 {
450  return (inb((unsigned long) addr));
451 }
452 
454 {
455  return (inw((unsigned long) addr));
456 }
457 
458 void __inline__ inppw_buffer(void __iomem *addr, void *P, int length)
459 {
460  insw((unsigned long) addr, (word *) P, length >> 1);
461 }
462 
463 void __inline__ outppw_buffer(void __iomem *addr, void *P, int length)
464 {
465  outsw((unsigned long) addr, (word *) P, length >> 1);
466 }
467 
468 void __inline__ outppw(void __iomem *addr, word w)
469 {
470  outw(w, (unsigned long) addr);
471 }
472 
473 void __inline__ outpp(void __iomem *addr, word p)
474 {
475  outb(p, (unsigned long) addr);
476 }
477 
478 /* --------------------------------------------------------------------------
479  IRQ request / remove
480  -------------------------------------------------------------------------- */
481 int diva_os_register_irq(void *context, byte irq, const char *name)
482 {
484  IRQF_DISABLED | IRQF_SHARED, name, context);
485  return (result);
486 }
487 
489 {
490  free_irq(irq, context);
491 }
492 
493 /* --------------------------------------------------------------------------
494  DPC framework implementation
495  -------------------------------------------------------------------------- */
496 static void diva_os_dpc_proc(unsigned long context)
497 {
498  diva_os_thread_dpc_t *psoft_isr = (diva_os_thread_dpc_t *) context;
499  diva_os_soft_isr_t *pisr = psoft_isr->psoft_isr;
500 
501  (*(pisr->callback)) (pisr, pisr->callback_context);
502 }
503 
506  void *callback_context)
507 {
508  diva_os_thread_dpc_t *pdpc;
509 
510  pdpc = (diva_os_thread_dpc_t *) diva_os_malloc(0, sizeof(*pdpc));
511  if (!(psoft_isr->object = pdpc)) {
512  return (-1);
513  }
514  memset(pdpc, 0x00, sizeof(*pdpc));
515  psoft_isr->callback = callback;
516  psoft_isr->callback_context = callback_context;
517  pdpc->psoft_isr = psoft_isr;
518  tasklet_init(&pdpc->divas_task, diva_os_dpc_proc, (unsigned long)pdpc);
519 
520  return (0);
521 }
522 
524 {
525  if (psoft_isr && psoft_isr->object) {
526  diva_os_thread_dpc_t *pdpc =
527  (diva_os_thread_dpc_t *) psoft_isr->object;
528 
529  tasklet_schedule(&pdpc->divas_task);
530  }
531 
532  return (1);
533 }
534 
536 {
537  return (0);
538 }
539 
541 {
542  if (psoft_isr && psoft_isr->object) {
543  diva_os_thread_dpc_t *pdpc =
544  (diva_os_thread_dpc_t *) psoft_isr->object;
545  void *mem;
546 
547  tasklet_kill(&pdpc->divas_task);
548  mem = psoft_isr->object;
549  psoft_isr->object = NULL;
550  diva_os_free(0, mem);
551  }
552 }
553 
554 /*
555  * kernel/user space copy functions
556  */
557 static int
558 xdi_copy_to_user(void *os_handle, void __user *dst, const void *src, int length)
559 {
560  if (copy_to_user(dst, src, length)) {
561  return (-EFAULT);
562  }
563  return (length);
564 }
565 
566 static int
567 xdi_copy_from_user(void *os_handle, void *dst, const void __user *src, int length)
568 {
569  if (copy_from_user(dst, src, length)) {
570  return (-EFAULT);
571  }
572  return (length);
573 }
574 
575 /*
576  * device node operations
577  */
578 static int divas_open(struct inode *inode, struct file *file)
579 {
580  return (0);
581 }
582 
583 static int divas_release(struct inode *inode, struct file *file)
584 {
585  if (file->private_data) {
587  }
588  return (0);
589 }
590 
591 static ssize_t divas_write(struct file *file, const char __user *buf,
592  size_t count, loff_t *ppos)
593 {
594  int ret = -EINVAL;
595 
596  if (!file->private_data) {
597  file->private_data = diva_xdi_open_adapter(file, buf,
598  count,
599  xdi_copy_from_user);
600  }
601  if (!file->private_data) {
602  return (-ENODEV);
603  }
604 
605  ret = diva_xdi_write(file->private_data, file,
606  buf, count, xdi_copy_from_user);
607  switch (ret) {
608  case -1: /* Message should be removed from rx mailbox first */
609  ret = -EBUSY;
610  break;
611  case -2: /* invalid adapter was specified in this call */
612  ret = -ENOMEM;
613  break;
614  case -3:
615  ret = -ENXIO;
616  break;
617  }
618  DBG_TRC(("write: ret %d", ret));
619  return (ret);
620 }
621 
622 static ssize_t divas_read(struct file *file, char __user *buf,
623  size_t count, loff_t *ppos)
624 {
625  int ret = -EINVAL;
626 
627  if (!file->private_data) {
628  file->private_data = diva_xdi_open_adapter(file, buf,
629  count,
630  xdi_copy_from_user);
631  }
632  if (!file->private_data) {
633  return (-ENODEV);
634  }
635 
636  ret = diva_xdi_read(file->private_data, file,
637  buf, count, xdi_copy_to_user);
638  switch (ret) {
639  case -1: /* RX mailbox is empty */
640  ret = -EAGAIN;
641  break;
642  case -2: /* no memory, mailbox was cleared, last command is failed */
643  ret = -ENOMEM;
644  break;
645  case -3: /* can't copy to user, retry */
646  ret = -EFAULT;
647  break;
648  }
649  DBG_TRC(("read: ret %d", ret));
650  return (ret);
651 }
652 
653 static unsigned int divas_poll(struct file *file, poll_table *wait)
654 {
655  if (!file->private_data) {
656  return (POLLERR);
657  }
658  return (POLLIN | POLLRDNORM);
659 }
660 
661 static const struct file_operations divas_fops = {
662  .owner = THIS_MODULE,
663  .llseek = no_llseek,
664  .read = divas_read,
665  .write = divas_write,
666  .poll = divas_poll,
667  .open = divas_open,
668  .release = divas_release
669 };
670 
671 static void divas_unregister_chrdev(void)
672 {
673  unregister_chrdev(major, DEVNAME);
674 }
675 
676 static int __init divas_register_chrdev(void)
677 {
678  if ((major = register_chrdev(0, DEVNAME, &divas_fops)) < 0)
679  {
680  printk(KERN_ERR "%s: failed to create /dev entry.\n",
681  DRIVERLNAME);
682  return (0);
683  }
684 
685  return (1);
686 }
687 
688 /* --------------------------------------------------------------------------
689  PCI driver section
690  -------------------------------------------------------------------------- */
691 static int __devinit divas_init_one(struct pci_dev *pdev,
692  const struct pci_device_id *ent)
693 {
694  void *pdiva = NULL;
695  u8 pci_latency;
696  u8 new_latency = 32;
697 
698  DBG_TRC(("%s bus: %08x fn: %08x insertion.\n",
699  CardProperties[ent->driver_data].Name,
700  pdev->bus->number, pdev->devfn))
701  printk(KERN_INFO "%s: %s bus: %08x fn: %08x insertion.\n",
702  DRIVERLNAME, CardProperties[ent->driver_data].Name,
703  pdev->bus->number, pdev->devfn);
704 
705  if (pci_enable_device(pdev)) {
706  DBG_TRC(("%s: %s bus: %08x fn: %08x device init failed.\n",
707  DRIVERLNAME,
708  CardProperties[ent->driver_data].Name,
709  pdev->bus->number,
710  pdev->devfn))
712  "%s: %s bus: %08x fn: %08x device init failed.\n",
713  DRIVERLNAME,
714  CardProperties[ent->driver_data].
715  Name, pdev->bus->number,
716  pdev->devfn);
717  return (-EIO);
718  }
719 
720  pci_set_master(pdev);
721 
722  pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
723  if (!pci_latency) {
724  DBG_TRC(("%s: bus: %08x fn: %08x fix latency.\n",
725  DRIVERLNAME, pdev->bus->number, pdev->devfn))
727  "%s: bus: %08x fn: %08x fix latency.\n",
728  DRIVERLNAME, pdev->bus->number, pdev->devfn);
729  pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency);
730  }
731 
732  if (!(pdiva = diva_driver_add_card(pdev, ent->driver_data))) {
733  DBG_TRC(("%s: %s bus: %08x fn: %08x card init failed.\n",
734  DRIVERLNAME,
735  CardProperties[ent->driver_data].Name,
736  pdev->bus->number,
737  pdev->devfn))
739  "%s: %s bus: %08x fn: %08x card init failed.\n",
740  DRIVERLNAME,
741  CardProperties[ent->driver_data].
742  Name, pdev->bus->number,
743  pdev->devfn);
744  return (-EIO);
745  }
746 
747  pci_set_drvdata(pdev, pdiva);
748 
749  return (0);
750 }
751 
752 static void __devexit divas_remove_one(struct pci_dev *pdev)
753 {
754  void *pdiva = pci_get_drvdata(pdev);
755 
756  DBG_TRC(("bus: %08x fn: %08x removal.\n",
757  pdev->bus->number, pdev->devfn))
758  printk(KERN_INFO "%s: bus: %08x fn: %08x removal.\n",
759  DRIVERLNAME, pdev->bus->number, pdev->devfn);
760 
761  if (pdiva) {
763  }
764 
765 }
766 
767 /* --------------------------------------------------------------------------
768  Driver Load / Startup
769  -------------------------------------------------------------------------- */
770 static int __init divas_init(void)
771 {
772  char tmprev[50];
773  int ret = 0;
774 
775  printk(KERN_INFO "%s\n", DRIVERNAME);
776  printk(KERN_INFO "%s: Rel:%s Rev:", DRIVERLNAME, DRIVERRELEASE_DIVAS);
777  strcpy(tmprev, main_revision);
778  printk("%s Build: %s(%s)\n", getrev(tmprev),
779  diva_xdi_common_code_build, DIVA_BUILD);
780  printk(KERN_INFO "%s: support for: ", DRIVERLNAME);
781 #ifdef CONFIG_ISDN_DIVAS_BRIPCI
782  printk("BRI/PCI ");
783 #endif
784 #ifdef CONFIG_ISDN_DIVAS_PRIPCI
785  printk("PRI/PCI ");
786 #endif
787  printk("adapters\n");
788 
789  if (!divasfunc_init(dbgmask)) {
790  printk(KERN_ERR "%s: failed to connect to DIDD.\n",
791  DRIVERLNAME);
792  ret = -EIO;
793  goto out;
794  }
795 
796  if (!divas_register_chrdev()) {
797 #ifdef MODULE
798  divasfunc_exit();
799 #endif
800  ret = -EIO;
801  goto out;
802  }
803 
804  if (!create_divas_proc()) {
805 #ifdef MODULE
806  divas_unregister_chrdev();
807  divasfunc_exit();
808 #endif
809  printk(KERN_ERR "%s: failed to create proc entry.\n",
810  DRIVERLNAME);
811  ret = -EIO;
812  goto out;
813  }
814 
815  if ((ret = pci_register_driver(&diva_pci_driver))) {
816 #ifdef MODULE
818  divas_unregister_chrdev();
819  divasfunc_exit();
820 #endif
821  printk(KERN_ERR "%s: failed to init pci driver.\n",
822  DRIVERLNAME);
823  goto out;
824  }
825  printk(KERN_INFO "%s: started with major %d\n", DRIVERLNAME, major);
826 
827 out:
828  return (ret);
829 }
830 
831 /* --------------------------------------------------------------------------
832  Driver Unload
833  -------------------------------------------------------------------------- */
834 static void __exit divas_exit(void)
835 {
836  pci_unregister_driver(&diva_pci_driver);
838  divas_unregister_chrdev();
839  divasfunc_exit();
840 
841  printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
842 }
843 
844 module_init(divas_init);
845 module_exit(divas_exit);