drivers/pcmcia/i82092.c

   1 /*
   2  * Driver for Intel I82092AA PCI-PCMCIA bridge.
   3  *
   4  * (C) 2001 Red Hat, Inc.
   5  *
   6  * Author: Arjan Van De Ven <arjanv@redhat.com>
   7  * Loosly based on i82365.c from the pcmcia-cs package
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/pci.h>
  13 #include <linux/init.h>
  14 #include <linux/workqueue.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/device.h>
  17
  18 #include <pcmcia/ss.h>
  19
  20 #include <asm/io.h>
  21
  22 #include "i82092aa.h"
  23 #include "i82365.h"
  24
  25 MODULE_LICENSE("GPL");
  26
  27 /* PCI core routines */
  28 static DEFINE_PCI_DEVICE_TABLE(i82092aa_pci_ids) = {
  29         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82092AA_0) },
  30         { }
  31 };
  32 MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
  33
  34 static struct pci_driver i82092aa_pci_driver = {
  35         .name           = "i82092aa",
  36         .id_table       = i82092aa_pci_ids,
  37         .probe          = i82092aa_pci_probe,
  38         .remove         = i82092aa_pci_remove,
  39 };
  40
  41
  42 /* the pccard structure and its functions */
  43 static struct pccard_operations i82092aa_operations = {
  44         .init                   = i82092aa_init,
  45         .get_status             = i82092aa_get_status,
  46         .set_socket             = i82092aa_set_socket,
  47         .set_io_map             = i82092aa_set_io_map,
  48         .set_mem_map            = i82092aa_set_mem_map,
  49 };
  50
  51 /* The card can do up to 4 sockets, allocate a structure for each of them */
  52
  53 struct socket_info {
  54         int     number;
  55         int     card_state;     /*  0 = no socket,
  56                                     1 = empty socket,
  57                                     2 = card but not initialized,
  58                                     3 = operational card */
  59         unsigned int io_base;   /* base io address of the socket */
  60
  61         struct pcmcia_socket socket;
  62         struct pci_dev *dev;    /* The PCI device for the socket */
  63 };
  64
  65 #define MAX_SOCKETS 4
  66 static struct socket_info sockets[MAX_SOCKETS];
  67 static int socket_count;  /* shortcut */
  68
  69
  70 static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
  71 {
  72         unsigned char configbyte;
  73         int i, ret;
  74
  75         enter("i82092aa_pci_probe");
  76
  77         if ((ret = pci_enable_device(dev)))
  78                 return ret;
  79
  80         pci_read_config_byte(dev, 0x40, &configbyte);  /* PCI Configuration Control */
  81         switch(configbyte&6) {
  82                 case 0:
  83                         socket_count = 2;
  84                         break;
  85                 case 2:
  86                         socket_count = 1;
  87                         break;
  88                 case 4:
  89                 case 6:
  90                         socket_count = 4;
  91                         break;
  92
  93                 default:
  94                         printk(KERN_ERR "i82092aa: Oops, you did something we didn't think of.\n");
  95                         ret = -EIO;
  96                         goto err_out_disable;
  97         }
  98         printk(KERN_INFO "i82092aa: configured as a %d socket device.\n", socket_count);
  99
 100         if (!request_region(pci_resource_start(dev, 0), 2, "i82092aa")) {
 101                 ret = -EBUSY;
 102                 goto err_out_disable;
 103         }
 104
 105         for (i = 0;i<socket_count;i++) {
 106                 sockets[i].card_state = 1; /* 1 = present but empty */
 107                 sockets[i].io_base = pci_resource_start(dev, 0);
 108                 sockets[i].socket.features |= SS_CAP_PCCARD;
 109                 sockets[i].socket.map_size = 0x1000;
 110                 sockets[i].socket.irq_mask = 0;
 111                 sockets[i].socket.pci_irq  = dev->irq;
 112                 sockets[i].socket.cb_dev  = dev;
 113                 sockets[i].socket.owner = THIS_MODULE;
 114
 115                 sockets[i].number = i;
 116
 117                 if (card_present(i)) {
 118                         sockets[i].card_state = 3;
 119                         dprintk(KERN_DEBUG "i82092aa: slot %i is occupied\n",i);
 120                 } else {
 121                         dprintk(KERN_DEBUG "i82092aa: slot %i is vacant\n",i);
 122                 }
 123         }
 124
 125         /* Now, specifiy that all interrupts are to be done as PCI interrupts */
 126         configbyte = 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
 127         pci_write_config_byte(dev, 0x50, configbyte); /* PCI Interrupt Routing Register */
 128
 129         /* Register the interrupt handler */
 130         dprintk(KERN_DEBUG "Requesting interrupt %i \n",dev->irq);
 131         if ((ret = request_irq(dev->irq, i82092aa_interrupt, IRQF_SHARED, "i82092aa", i82092aa_interrupt))) {
 132                 printk(KERN_ERR "i82092aa: Failed to register IRQ %d, aborting\n", dev->irq);
 133                 goto err_out_free_res;
 134         }
 135
 136         pci_set_drvdata(dev, &sockets[i].socket);
 137
 138         for (i = 0; i<socket_count; i++) {
 139                 sockets[i].socket.dev.parent = &dev->dev;
 140                 sockets[i].socket.ops = &i82092aa_operations;
 141                 sockets[i].socket.resource_ops = &pccard_nonstatic_ops;
 142                 ret = pcmcia_register_socket(&sockets[i].socket);
 143                 if (ret) {
 144                         goto err_out_free_sockets;
 145                 }
 146         }
 147
 148         leave("i82092aa_pci_probe");
 149         return 0;
 150
 151 err_out_free_sockets:
 152         if (i) {
 153                 for (i--;i>=0;i--) {
 154                         pcmcia_unregister_socket(&sockets[i].socket);
 155                 }
 156         }
 157         free_irq(dev->irq, i82092aa_interrupt);
 158 err_out_free_res:
 159         release_region(pci_resource_start(dev, 0), 2);
 160 err_out_disable:
 161         pci_disable_device(dev);
 162         return ret;
 163 }
 164
 165 static void i82092aa_pci_remove(struct pci_dev *dev)
 166 {
 167         struct pcmcia_socket *socket = pci_get_drvdata(dev);
 168
 169         enter("i82092aa_pci_remove");
 170
 171         free_irq(dev->irq, i82092aa_interrupt);
 172
 173         if (socket)
 174                 pcmcia_unregister_socket(socket);
 175
 176         leave("i82092aa_pci_remove");
 177 }
 178
 179 static DEFINE_SPINLOCK(port_lock);
 180
 181 /* basic value read/write functions */
 182
 183 static unsigned char indirect_read(int socket, unsigned short reg)
 184 {
 185         unsigned short int port;
 186         unsigned char val;
 187         unsigned long flags;
 188         spin_lock_irqsave(&port_lock,flags);
 189         reg += socket * 0x40;
 190         port = sockets[socket].io_base;
 191         outb(reg,port);
 192         val = inb(port+1);
 193         spin_unlock_irqrestore(&port_lock,flags);
 194         return val;
 195 }
 196
 197 #if 0
 198 static unsigned short indirect_read16(int socket, unsigned short reg)
 199 {
 200         unsigned short int port;
 201         unsigned short tmp;
 202         unsigned long flags;
 203         spin_lock_irqsave(&port_lock,flags);
 204         reg  = reg + socket * 0x40;
 205         port = sockets[socket].io_base;
 206         outb(reg,port);
 207         tmp = inb(port+1);
 208         reg++;
 209         outb(reg,port);
 210         tmp = tmp | (inb(port+1)<<8);
 211         spin_unlock_irqrestore(&port_lock,flags);
 212         return tmp;
 213 }
 214 #endif
 215
 216 static void indirect_write(int socket, unsigned short reg, unsigned char value)
 217 {
 218         unsigned short int port;
 219         unsigned long flags;
 220         spin_lock_irqsave(&port_lock,flags);
 221         reg = reg + socket * 0x40;
 222         port = sockets[socket].io_base;
 223         outb(reg,port);
 224         outb(value,port+1);
 225         spin_unlock_irqrestore(&port_lock,flags);
 226 }
 227
 228 static void indirect_setbit(int socket, unsigned short reg, unsigned char mask)
 229 {
 230         unsigned short int port;
 231         unsigned char val;
 232         unsigned long flags;
 233         spin_lock_irqsave(&port_lock,flags);
 234         reg = reg + socket * 0x40;
 235         port = sockets[socket].io_base;
 236         outb(reg,port);
 237         val = inb(port+1);
 238         val |= mask;
 239         outb(reg,port);
 240         outb(val,port+1);
 241         spin_unlock_irqrestore(&port_lock,flags);
 242 }
 243
 244
 245 static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask)
 246 {
 247         unsigned short int port;
 248         unsigned char val;
 249         unsigned long flags;
 250         spin_lock_irqsave(&port_lock,flags);
 251         reg = reg + socket * 0x40;
 252         port = sockets[socket].io_base;
 253         outb(reg,port);
 254         val = inb(port+1);
 255         val &= ~mask;
 256         outb(reg,port);
 257         outb(val,port+1);
 258         spin_unlock_irqrestore(&port_lock,flags);
 259 }
 260
 261 static void indirect_write16(int socket, unsigned short reg, unsigned short value)
 262 {
 263         unsigned short int port;
 264         unsigned char val;
 265         unsigned long flags;
 266         spin_lock_irqsave(&port_lock,flags);
 267         reg = reg + socket * 0x40;
 268         port = sockets[socket].io_base;
 269
 270         outb(reg,port);
 271         val = value & 255;
 272         outb(val,port+1);
 273
 274         reg++;
 275
 276         outb(reg,port);
 277         val = value>>8;
 278         outb(val,port+1);
 279         spin_unlock_irqrestore(&port_lock,flags);
 280 }
 281
 282 /* simple helper functions */
 283 /* External clock time, in nanoseconds.  120 ns = 8.33 MHz */
 284 static int cycle_time = 120;
 285
 286 static int to_cycles(int ns)
 287 {
 288         if (cycle_time!=0)
 289                 return ns/cycle_time;
 290         else
 291                 return 0;
 292 }
 293
 294
 295 /* Interrupt handler functionality */
 296
 297 static irqreturn_t i82092aa_interrupt(int irq, void *dev)
 298 {
 299         int i;
 300         int loopcount = 0;
 301         int handled = 0;
 302
 303         unsigned int events, active=0;
 304
 305 /*      enter("i82092aa_interrupt");*/
 306
 307         while (1) {
 308                 loopcount++;
 309                 if (loopcount>20) {
 310                         printk(KERN_ERR "i82092aa: infinite eventloop in interrupt \n");
 311                         break;
 312                 }
 313
 314                 active = 0;
 315
 316                 for (i=0;i<socket_count;i++) {
 317                         int csc;
 318                         if (sockets[i].card_state==0) /* Inactive socket, should not happen */
 319                                 continue;
 320
 321                         csc = indirect_read(i,I365_CSC); /* card status change register */
 322
 323                         if (csc==0)  /* no events on this socket */
 324                                 continue;
 325                         handled = 1;
 326                         events = 0;
 327
 328                         if (csc & I365_CSC_DETECT) {
 329                                 events |= SS_DETECT;
 330                                 printk("Card detected in socket %i!\n",i);
 331                          }
 332
 333                         if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) {
 334                                 /* For IO/CARDS, bit 0 means "read the card" */
 335                                 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 336                         } else {
 337                                 /* Check for battery/ready events */
 338                                 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 339                                 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
 340                                 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
 341                         }
 342
 343                         if (events) {
 344                                 pcmcia_parse_events(&sockets[i].socket, events);
 345                         }
 346                         active |= events;
 347                 }
 348
 349                 if (active==0) /* no more events to handle */
 350                         break;
 351
 352         }
 353         return IRQ_RETVAL(handled);
 354 /*      leave("i82092aa_interrupt");*/
 355 }
 356
 357
 358
 359 /* socket functions */
 360
 361 static int card_present(int socketno)
 362 {
 363         unsigned int val;
 364         enter("card_present");
 365
 366         if ((socketno<0) || (socketno >= MAX_SOCKETS))
 367                 return 0;
 368         if (sockets[socketno].io_base == 0)
 369                 return 0;
 370
 371
 372         val = indirect_read(socketno, 1); /* Interface status register */
 373         if ((val&12)==12) {
 374                 leave("card_present 1");
 375                 return 1;
 376         }
 377
 378         leave("card_present 0");
 379         return 0;
 380 }
 381
 382 static void set_bridge_state(int sock)
 383 {
 384         enter("set_bridge_state");
 385         indirect_write(sock, I365_GBLCTL,0x00);
 386         indirect_write(sock, I365_GENCTL,0x00);
 387
 388         indirect_setbit(sock, I365_INTCTL,0x08);
 389         leave("set_bridge_state");
 390 }
 391
 392
 393
 394
 395
 396
 397 static int i82092aa_init(struct pcmcia_socket *sock)
 398 {
 399         int i;
 400         struct resource res = { .start = 0, .end = 0x0fff };
 401         pccard_io_map io = { 0, 0, 0, 0, 1 };
 402         pccard_mem_map mem = { .res = &res, };
 403
 404         enter("i82092aa_init");
 405
 406         for (i = 0; i < 2; i++) {
 407                 io.map = i;
 408                 i82092aa_set_io_map(sock, &io);
 409         }
 410         for (i = 0; i < 5; i++) {
 411                 mem.map = i;
 412                 i82092aa_set_mem_map(sock, &mem);
 413         }
 414
 415         leave("i82092aa_init");
 416         return 0;
 417 }
 418
 419 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
 420 {
 421         unsigned int sock = container_of(socket, struct socket_info, socket)->number;
 422         unsigned int status;
 423
 424         enter("i82092aa_get_status");
 425
 426         status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
 427         *value = 0;
 428
 429         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
 430                 *value |= SS_DETECT;
 431         }
 432
 433         /* IO cards have a different meaning of bits 0,1 */
 434         /* Also notice the inverse-logic on the bits */
 435          if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
 436                 /* IO card */
 437                 if (!(status & I365_CS_STSCHG))
 438                         *value |= SS_STSCHG;
 439          } else { /* non I/O card */
 440                 if (!(status & I365_CS_BVD1))
 441                         *value |= SS_BATDEAD;
 442                 if (!(status & I365_CS_BVD2))
 443                         *value |= SS_BATWARN;
 444
 445          }
 446
 447          if (status & I365_CS_WRPROT)
 448                 (*value) |= SS_WRPROT;  /* card is write protected */
 449
 450          if (status & I365_CS_READY)
 451                 (*value) |= SS_READY;    /* card is not busy */
 452
 453          if (status & I365_CS_POWERON)
 454                 (*value) |= SS_POWERON;  /* power is applied to the card */
 455
 456
 457         leave("i82092aa_get_status");
 458         return 0;
 459 }
 460
 461
 462 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state)
 463 {
 464         unsigned int sock = container_of(socket, struct socket_info, socket)->number;
 465         unsigned char reg;
 466
 467         enter("i82092aa_set_socket");
 468
 469         /* First, set the global controller options */
 470
 471         set_bridge_state(sock);
 472
 473         /* Values for the IGENC register */
 474
 475         reg = 0;
 476         if (!(state->flags & SS_RESET))         /* The reset bit has "inverse" logic */
 477                 reg = reg | I365_PC_RESET;
 478         if (state->flags & SS_IOCARD)
 479                 reg = reg | I365_PC_IOCARD;
 480
 481         indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
 482
 483         /* Power registers */
 484
 485         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
 486
 487         if (state->flags & SS_PWR_AUTO) {
 488                 printk("Auto power\n");
 489                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
 490         }
 491         if (state->flags & SS_OUTPUT_ENA) {
 492                 printk("Power Enabled \n");
 493                 reg |= I365_PWR_OUT;    /* enable power */
 494         }
 495
 496         switch (state->Vcc) {
 497                 case 0:
 498                         break;
 499                 case 50:
 500                         printk("setting voltage to Vcc to 5V on socket %i\n",sock);
 501                         reg |= I365_VCC_5V;
 502                         break;
 503                 default:
 504                         printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
 505                         leave("i82092aa_set_socket");
 506                         return -EINVAL;
 507         }
 508
 509
 510         switch (state->Vpp) {
 511                 case 0:
 512                         printk("not setting Vpp on socket %i\n",sock);
 513                         break;
 514                 case 50:
 515                         printk("setting Vpp to 5.0 for socket %i\n",sock);
 516                         reg |= I365_VPP1_5V | I365_VPP2_5V;
 517                         break;
 518                 case 120:
 519                         printk("setting Vpp to 12.0\n");
 520                         reg |= I365_VPP1_12V | I365_VPP2_12V;
 521                         break;
 522                 default:
 523                         printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
 524                         leave("i82092aa_set_socket");
 525                         return -EINVAL;
 526         }
 527
 528         if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
 529                 indirect_write(sock,I365_POWER,reg);
 530
 531         /* Enable specific interrupt events */
 532
 533         reg = 0x00;
 534         if (state->csc_mask & SS_DETECT) {
 535                 reg |= I365_CSC_DETECT;
 536         }
 537         if (state->flags & SS_IOCARD) {
 538                 if (state->csc_mask & SS_STSCHG)
 539                         reg |= I365_CSC_STSCHG;
 540         } else {
 541                 if (state->csc_mask & SS_BATDEAD)
 542                         reg |= I365_CSC_BVD1;
 543                 if (state->csc_mask & SS_BATWARN)
 544                         reg |= I365_CSC_BVD2;
 545                 if (state->csc_mask & SS_READY)
 546                         reg |= I365_CSC_READY;
 547
 548         }
 549
 550         /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
 551
 552         indirect_write(sock,I365_CSCINT,reg);
 553         (void)indirect_read(sock,I365_CSC);
 554
 555         leave("i82092aa_set_socket");
 556         return 0;
 557 }
 558
 559 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
 560 {
 561         unsigned int sock = container_of(socket, struct socket_info, socket)->number;
 562         unsigned char map, ioctl;
 563
 564         enter("i82092aa_set_io_map");
 565
 566         map = io->map;
 567
 568         /* Check error conditions */
 569         if (map > 1) {
 570                 leave("i82092aa_set_io_map with invalid map");
 571                 return -EINVAL;
 572         }
 573         if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
 574                 leave("i82092aa_set_io_map with invalid io");
 575                 return -EINVAL;
 576         }
 577
 578         /* Turn off the window before changing anything */
 579         if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
 580                 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
 581
 582 /*      printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop);  */
 583
 584         /* write the new values */
 585         indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);
 586         indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);
 587
 588         ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
 589
 590         if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
 591                 ioctl |= I365_IOCTL_16BIT(map);
 592
 593         indirect_write(sock,I365_IOCTL,ioctl);
 594
 595         /* Turn the window back on if needed */
 596         if (io->flags & MAP_ACTIVE)
 597                 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
 598
 599         leave("i82092aa_set_io_map");
 600         return 0;
 601 }
 602
 603 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
 604 {
 605         struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
 606         unsigned int sock = sock_info->number;
 607         struct pci_bus_region region;
 608         unsigned short base, i;
 609         unsigned char map;
 610
 611         enter("i82092aa_set_mem_map");
 612
 613         pcibios_resource_to_bus(sock_info->dev, &region, mem->res);
 614
 615         map = mem->map;
 616         if (map > 4) {
 617                 leave("i82092aa_set_mem_map: invalid map");
 618                 return -EINVAL;
 619         }
 620
 621
 622         if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
 623              (mem->speed > 1000) ) {
 624                 leave("i82092aa_set_mem_map: invalid address / speed");
 625                 printk("invalid mem map for socket %i: %llx to %llx with a "
 626                         "start of %x\n",
 627                         sock,
 628                         (unsigned long long)region.start,
 629                         (unsigned long long)region.end,
 630                         mem->card_start);
 631                 return -EINVAL;
 632         }
 633
 634         /* Turn off the window before changing anything */
 635         if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
 636                       indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
 637
 638
 639 /*      printk("set_mem_map: Setting map %i range to %x - %x on socket %i, speed is %i, active = %i \n",map, region.start,region.end,sock,mem->speed,mem->flags & MAP_ACTIVE);  */
 640
 641         /* write the start address */
 642         base = I365_MEM(map);
 643         i = (region.start >> 12) & 0x0fff;
 644         if (mem->flags & MAP_16BIT)
 645                 i |= I365_MEM_16BIT;
 646         if (mem->flags & MAP_0WS)
 647                 i |= I365_MEM_0WS;
 648         indirect_write16(sock,base+I365_W_START,i);
 649
 650         /* write the stop address */
 651
 652         i= (region.end >> 12) & 0x0fff;
 653         switch (to_cycles(mem->speed)) {
 654                 case 0:
 655                         break;
 656                 case 1:
 657                         i |= I365_MEM_WS0;
 658                         break;
 659                 case 2:
 660                         i |= I365_MEM_WS1;
 661                         break;
 662                 default:
 663                         i |= I365_MEM_WS1 | I365_MEM_WS0;
 664                         break;
 665         }
 666
 667         indirect_write16(sock,base+I365_W_STOP,i);
 668
 669         /* card start */
 670
 671         i = ((mem->card_start - region.start) >> 12) & 0x3fff;
 672         if (mem->flags & MAP_WRPROT)
 673                 i |= I365_MEM_WRPROT;
 674         if (mem->flags & MAP_ATTRIB) {
 675 /*              printk("requesting attribute memory for socket %i\n",sock);*/
 676                 i |= I365_MEM_REG;
 677         } else {
 678 /*              printk("requesting normal memory for socket %i\n",sock);*/
 679         }
 680         indirect_write16(sock,base+I365_W_OFF,i);
 681
 682         /* Enable the window if necessary */
 683         if (mem->flags & MAP_ACTIVE)
 684                 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
 685
 686         leave("i82092aa_set_mem_map");
 687         return 0;
 688 }
 689
 690 static int i82092aa_module_init(void)
 691 {
 692         return pci_register_driver(&i82092aa_pci_driver);
 693 }
 694
 695 static void i82092aa_module_exit(void)
 696 {
 697         enter("i82092aa_module_exit");
 698         pci_unregister_driver(&i82092aa_pci_driver);
 699         if (sockets[0].io_base>0)
 700                          release_region(sockets[0].io_base, 2);
 701         leave("i82092aa_module_exit");
 702 }
 703
 704 module_init(i82092aa_module_init);
 705 module_exit(i82092aa_module_exit);
 706