linux/drivers/isdn/hardware/eicon/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 (mac@melware.de)
   6 * Copyright 2000-2003 Cytronics & Melware (info@melware.de)
   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 <linux/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
  39static char *main_revision = "$Revision: 1.55.4.6 $";
  40
  41static int major;
  42
  43static int dbgmask;
  44
  45MODULE_DESCRIPTION("Kernel driver for Eicon DIVA Server cards");
  46MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
  47MODULE_LICENSE("GPL");
  48
  49module_param(dbgmask, int, 0);
  50MODULE_PARM_DESC(dbgmask, "initial debug mask");
  51
  52static char *DRIVERNAME =
  53        "Eicon DIVA Server driver (http://www.melware.net)";
  54static char *DRIVERLNAME = "divas";
  55static char *DEVNAME = "Divas";
  56char *DRIVERRELEASE_DIVAS = "2.0";
  57
  58extern irqreturn_t diva_os_irq_wrapper(int irq, void *context);
  59extern int create_divas_proc(void);
  60extern void remove_divas_proc(void);
  61extern void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf);
  62extern int divasfunc_init(int dbgmask);
  63extern void divasfunc_exit(void);
  64
  65typedef struct _diva_os_thread_dpc {
  66        struct tasklet_struct divas_task;
  67        diva_os_soft_isr_t *psoft_isr;
  68} diva_os_thread_dpc_t;
  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*/
 113static const struct pci_device_id divas_pci_tbl[] = {
 114        /* Diva Server BRI-2M PCI 0xE010 */
 115        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRA),
 116          CARDTYPE_MAESTRA_PCI },
 117        /* Diva Server 4BRI-8M PCI 0xE012 */
 118        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAQ),
 119          CARDTYPE_DIVASRV_Q_8M_PCI },
 120        /* Diva Server 4BRI-8M 2.0 PCI 0xE013 */
 121        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAQ_U),
 122          CARDTYPE_DIVASRV_Q_8M_V2_PCI },
 123        /* Diva Server PRI-30M PCI 0xE014 */
 124        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP),
 125          CARDTYPE_DIVASRV_P_30M_PCI },
 126        /* Diva Server PRI 2.0 adapter 0xE015 */
 127        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2),
 128          CARDTYPE_DIVASRV_P_30M_V2_PCI },
 129        /* Diva Server Voice 4BRI-8M PCI 0xE016 */
 130        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_4BRI_VOIP),
 131          CARDTYPE_DIVASRV_VOICE_Q_8M_PCI },
 132        /* Diva Server Voice 4BRI-8M 2.0 PCI 0xE017 */
 133        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_4BRI_2_VOIP),
 134          CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI },
 135        /* Diva Server BRI-2M 2.0 PCI 0xE018 */
 136        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_BRI2M_2),
 137          CARDTYPE_DIVASRV_B_2M_V2_PCI },
 138        /* Diva Server Voice PRI 2.0 PCI 0xE019 */
 139        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP),
 140          CARDTYPE_DIVASRV_VOICE_P_30M_V2_PCI },
 141        /* Diva Server 2FX 0xE01A */
 142        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_2F),
 143          CARDTYPE_DIVASRV_B_2F_PCI },
 144        /* Diva Server Voice BRI-2M 2.0 PCI 0xE01B */
 145        { PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_BRI2M_2_VOIP),
 146          CARDTYPE_DIVASRV_VOICE_B_2M_V2_PCI },
 147        { 0, }                  /* 0 terminated list. */
 148};
 149MODULE_DEVICE_TABLE(pci, divas_pci_tbl);
 150
 151static int divas_init_one(struct pci_dev *pdev,
 152                          const struct pci_device_id *ent);
 153static void divas_remove_one(struct pci_dev *pdev);
 154
 155static struct pci_driver diva_pci_driver = {
 156        .name     = "divas",
 157        .probe    = divas_init_one,
 158        .remove   = divas_remove_one,
 159        .id_table = divas_pci_tbl,
 160};
 161
 162/*********************************************************
 163 ** little helper functions
 164 *********************************************************/
 165static 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
 178void 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
 190void 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   -------------------------------------------------------------------------- */
 202byte 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
 208byte 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
 214unsigned 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
 225unsigned 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"));
 241                        ret &= PCI_BASE_ADDRESS_IO_MASK;
 242                } else {
 243                        DBG_TRC(("  memory"));
 244                        ret &= PCI_BASE_ADDRESS_MEM_MASK;
 245                }
 246                DBG_TRC(("  final=%08x", ret));
 247        }
 248
 249        return (ret);
 250}
 251
 252void 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
 293void 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*/
 336static void *diva_pci_alloc_consistent(struct pci_dev *hwdev,
 337                                       size_t size,
 338                                       dma_addr_t *dma_handle,
 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
 348void 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;
 357                dma_addr_t dma_handle;
 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*/
 385void 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;
 389        dword phys_addr;
 390        void *cpu_addr;
 391        dma_addr_t dma_handle;
 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
 416int
 417diva_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
 431void __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
 438void divasa_unmap_pci_bar(void __iomem *bar)
 439{
 440        if (bar) {
 441                iounmap(bar);
 442        }
 443}
 444
 445/*********************************************************
 446 ** I/O port access
 447 *********************************************************/
 448inline byte inpp(void __iomem *addr)
 449{
 450        return (inb((unsigned long) addr));
 451}
 452
 453inline word inppw(void __iomem *addr)
 454{
 455        return (inw((unsigned long) addr));
 456}
 457
 458inline void inppw_buffer(void __iomem *addr, void *P, int length)
 459{
 460        insw((unsigned long) addr, (word *) P, length >> 1);
 461}
 462
 463inline void outppw_buffer(void __iomem *addr, void *P, int length)
 464{
 465        outsw((unsigned long) addr, (word *) P, length >> 1);
 466}
 467
 468inline void outppw(void __iomem *addr, word w)
 469{
 470        outw(w, (unsigned long) addr);
 471}
 472
 473inline void outpp(void __iomem *addr, word p)
 474{
 475        outb(p, (unsigned long) addr);
 476}
 477
 478/* --------------------------------------------------------------------------
 479   IRQ request / remove
 480   -------------------------------------------------------------------------- */
 481int diva_os_register_irq(void *context, byte irq, const char *name)
 482{
 483        int result = request_irq(irq, diva_os_irq_wrapper,
 484                                 IRQF_SHARED, name, context);
 485        return (result);
 486}
 487
 488void diva_os_remove_irq(void *context, byte irq)
 489{
 490        free_irq(irq, context);
 491}
 492
 493/* --------------------------------------------------------------------------
 494   DPC framework implementation
 495   -------------------------------------------------------------------------- */
 496static 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
 504int diva_os_initialize_soft_isr(diva_os_soft_isr_t *psoft_isr,
 505                                diva_os_soft_isr_callback_t callback,
 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
 523int diva_os_schedule_soft_isr(diva_os_soft_isr_t *psoft_isr)
 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
 535int diva_os_cancel_soft_isr(diva_os_soft_isr_t *psoft_isr)
 536{
 537        return (0);
 538}
 539
 540void diva_os_remove_soft_isr(diva_os_soft_isr_t *psoft_isr)
 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 */
 557static int
 558xdi_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
 566static int
 567xdi_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 */
 578static int divas_open(struct inode *inode, struct file *file)
 579{
 580        return (0);
 581}
 582
 583static int divas_release(struct inode *inode, struct file *file)
 584{
 585        if (file->private_data) {
 586                diva_xdi_close_adapter(file->private_data, file);
 587        }
 588        return (0);
 589}
 590
 591static 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
 622static 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
 653static 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
 661static 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
 671static void divas_unregister_chrdev(void)
 672{
 673        unregister_chrdev(major, DEVNAME);
 674}
 675
 676static 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   -------------------------------------------------------------------------- */
 691static int divas_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 692{
 693        void *pdiva = NULL;
 694        u8 pci_latency;
 695        u8 new_latency = 32;
 696
 697        DBG_TRC(("%s bus: %08x fn: %08x insertion.\n",
 698                 CardProperties[ent->driver_data].Name,
 699                 pdev->bus->number, pdev->devfn))
 700                printk(KERN_INFO "%s: %s bus: %08x fn: %08x insertion.\n",
 701                       DRIVERLNAME, CardProperties[ent->driver_data].Name,
 702                       pdev->bus->number, pdev->devfn);
 703
 704        if (pci_enable_device(pdev)) {
 705                DBG_TRC(("%s: %s bus: %08x fn: %08x device init failed.\n",
 706                         DRIVERLNAME,
 707                         CardProperties[ent->driver_data].Name,
 708                         pdev->bus->number,
 709                         pdev->devfn))
 710                        printk(KERN_ERR
 711                               "%s: %s bus: %08x fn: %08x device init failed.\n",
 712                               DRIVERLNAME,
 713                               CardProperties[ent->driver_data].
 714                               Name, pdev->bus->number,
 715                               pdev->devfn);
 716                return (-EIO);
 717        }
 718
 719        pci_set_master(pdev);
 720
 721        pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
 722        if (!pci_latency) {
 723                DBG_TRC(("%s: bus: %08x fn: %08x fix latency.\n",
 724                         DRIVERLNAME, pdev->bus->number, pdev->devfn))
 725                        printk(KERN_INFO
 726                               "%s: bus: %08x fn: %08x fix latency.\n",
 727                               DRIVERLNAME, pdev->bus->number, pdev->devfn);
 728                pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency);
 729        }
 730
 731        if (!(pdiva = diva_driver_add_card(pdev, ent->driver_data))) {
 732                DBG_TRC(("%s: %s bus: %08x fn: %08x card init failed.\n",
 733                         DRIVERLNAME,
 734                         CardProperties[ent->driver_data].Name,
 735                         pdev->bus->number,
 736                         pdev->devfn))
 737                        printk(KERN_ERR
 738                               "%s: %s bus: %08x fn: %08x card init failed.\n",
 739                               DRIVERLNAME,
 740                               CardProperties[ent->driver_data].
 741                               Name, pdev->bus->number,
 742                               pdev->devfn);
 743                return (-EIO);
 744        }
 745
 746        pci_set_drvdata(pdev, pdiva);
 747
 748        return (0);
 749}
 750
 751static void divas_remove_one(struct pci_dev *pdev)
 752{
 753        void *pdiva = pci_get_drvdata(pdev);
 754
 755        DBG_TRC(("bus: %08x fn: %08x removal.\n",
 756                 pdev->bus->number, pdev->devfn))
 757                printk(KERN_INFO "%s: bus: %08x fn: %08x removal.\n",
 758                       DRIVERLNAME, pdev->bus->number, pdev->devfn);
 759
 760        if (pdiva) {
 761                diva_driver_remove_card(pdiva);
 762        }
 763
 764}
 765
 766/* --------------------------------------------------------------------------
 767   Driver Load / Startup
 768   -------------------------------------------------------------------------- */
 769static int __init divas_init(void)
 770{
 771        char tmprev[50];
 772        int ret = 0;
 773
 774        printk(KERN_INFO "%s\n", DRIVERNAME);
 775        printk(KERN_INFO "%s: Rel:%s  Rev:", DRIVERLNAME, DRIVERRELEASE_DIVAS);
 776        strcpy(tmprev, main_revision);
 777        printk("%s  Build: %s(%s)\n", getrev(tmprev),
 778               diva_xdi_common_code_build, DIVA_BUILD);
 779        printk(KERN_INFO "%s: support for: ", DRIVERLNAME);
 780#ifdef CONFIG_ISDN_DIVAS_BRIPCI
 781        printk("BRI/PCI ");
 782#endif
 783#ifdef CONFIG_ISDN_DIVAS_PRIPCI
 784        printk("PRI/PCI ");
 785#endif
 786        printk("adapters\n");
 787
 788        if (!divasfunc_init(dbgmask)) {
 789                printk(KERN_ERR "%s: failed to connect to DIDD.\n",
 790                       DRIVERLNAME);
 791                ret = -EIO;
 792                goto out;
 793        }
 794
 795        if (!divas_register_chrdev()) {
 796#ifdef MODULE
 797                divasfunc_exit();
 798#endif
 799                ret = -EIO;
 800                goto out;
 801        }
 802
 803        if (!create_divas_proc()) {
 804#ifdef MODULE
 805                divas_unregister_chrdev();
 806                divasfunc_exit();
 807#endif
 808                printk(KERN_ERR "%s: failed to create proc entry.\n",
 809                       DRIVERLNAME);
 810                ret = -EIO;
 811                goto out;
 812        }
 813
 814        if ((ret = pci_register_driver(&diva_pci_driver))) {
 815#ifdef MODULE
 816                remove_divas_proc();
 817                divas_unregister_chrdev();
 818                divasfunc_exit();
 819#endif
 820                printk(KERN_ERR "%s: failed to init pci driver.\n",
 821                       DRIVERLNAME);
 822                goto out;
 823        }
 824        printk(KERN_INFO "%s: started with major %d\n", DRIVERLNAME, major);
 825
 826out:
 827        return (ret);
 828}
 829
 830/* --------------------------------------------------------------------------
 831   Driver Unload
 832   -------------------------------------------------------------------------- */
 833static void __exit divas_exit(void)
 834{
 835        pci_unregister_driver(&diva_pci_driver);
 836        remove_divas_proc();
 837        divas_unregister_chrdev();
 838        divasfunc_exit();
 839
 840        printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
 841}
 842
 843module_init(divas_init);
 844module_exit(divas_exit);
 845