drivers/pcmcia/pd6729.c

   1 /*
   2  * Driver for the Cirrus PD6729 PCI-PCMCIA bridge.
   3  *
   4  * Based on the i82092.c driver.
   5  *
   6  * This software may be used and distributed according to the terms of
   7  * the GNU General Public License, incorporated herein by reference.
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/config.h>
  12 #include <linux/module.h>
  13 #include <linux/pci.h>
  14 #include <linux/init.h>
  15 #include <linux/workqueue.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/device.h>
  18
  19 #include <pcmcia/cs_types.h>
  20 #include <pcmcia/ss.h>
  21 #include <pcmcia/cs.h>
  22
  23 #include <asm/system.h>
  24 #include <asm/io.h>
  25
  26 #include "pd6729.h"
  27 #include "i82365.h"
  28 #include "cirrus.h"
  29
  30 MODULE_LICENSE("GPL");
  31 MODULE_DESCRIPTION("Driver for the Cirrus PD6729 PCI-PCMCIA bridge");
  32 MODULE_AUTHOR("Jun Komuro <komurojun-mbn@nifty.com>");
  33
  34 #define MAX_SOCKETS 2
  35
  36 /*
  37  * simple helper functions
  38  * External clock time, in nanoseconds.  120 ns = 8.33 MHz
  39  */
  40 #define to_cycles(ns)   ((ns)/120)
  41
  42 #ifndef NO_IRQ
  43 #define NO_IRQ  ((unsigned int)(0))
  44 #endif
  45
  46 /*
  47  * PARAMETERS
  48  *  irq_mode=n
  49  *     Specifies the interrupt delivery mode.  The default (1) is to use PCI
  50  *     interrupts; a value of 0 selects ISA interrupts. This must be set for
  51  *     correct operation of PCI card readers.
  52  *
  53  *  irq_list=i,j,...
  54  *     This list limits the set of interrupts that can be used by PCMCIA
  55  *     cards.
  56  *     The default list is 3,4,5,7,9,10,11.
  57  *     (irq_list parameter is not used, if irq_mode = 1)
  58  */
  59
  60 static int irq_mode = 1; /* 0 = ISA interrupt, 1 = PCI interrupt */
  61 static int irq_list[16];
  62 static int irq_list_count = 0;
  63
  64 module_param(irq_mode, int, 0444);
  65 module_param_array(irq_list, int, &irq_list_count, 0444);
  66 MODULE_PARM_DESC(irq_mode,
  67                 "interrupt delivery mode. 0 = ISA, 1 = PCI. default is 1");
  68 MODULE_PARM_DESC(irq_list, "interrupts that can be used by PCMCIA cards");
  69
  70 static DEFINE_SPINLOCK(port_lock);
  71
  72 /* basic value read/write functions */
  73
  74 static unsigned char indirect_read(struct pd6729_socket *socket,
  75                                    unsigned short reg)
  76 {
  77         unsigned long port;
  78         unsigned char val;
  79         unsigned long flags;
  80
  81         spin_lock_irqsave(&port_lock, flags);
  82         reg += socket->number * 0x40;
  83         port = socket->io_base;
  84         outb(reg, port);
  85         val = inb(port + 1);
  86         spin_unlock_irqrestore(&port_lock, flags);
  87
  88         return val;
  89 }
  90
  91 static unsigned short indirect_read16(struct pd6729_socket *socket,
  92                                       unsigned short reg)
  93 {
  94         unsigned long port;
  95         unsigned short tmp;
  96         unsigned long flags;
  97
  98         spin_lock_irqsave(&port_lock, flags);
  99         reg  = reg + socket->number * 0x40;
 100         port = socket->io_base;
 101         outb(reg, port);
 102         tmp = inb(port + 1);
 103         reg++;
 104         outb(reg, port);
 105         tmp = tmp | (inb(port + 1) << 8);
 106         spin_unlock_irqrestore(&port_lock, flags);
 107
 108         return tmp;
 109 }
 110
 111 static void indirect_write(struct pd6729_socket *socket, unsigned short reg,
 112                            unsigned char value)
 113 {
 114         unsigned long port;
 115         unsigned long flags;
 116
 117         spin_lock_irqsave(&port_lock, flags);
 118         reg = reg + socket->number * 0x40;
 119         port = socket->io_base;
 120         outb(reg, port);
 121         outb(value, port + 1);
 122         spin_unlock_irqrestore(&port_lock, flags);
 123 }
 124
 125 static void indirect_setbit(struct pd6729_socket *socket, unsigned short reg,
 126                             unsigned char mask)
 127 {
 128         unsigned long port;
 129         unsigned char val;
 130         unsigned long flags;
 131
 132         spin_lock_irqsave(&port_lock, flags);
 133         reg = reg + socket->number * 0x40;
 134         port = socket->io_base;
 135         outb(reg, port);
 136         val = inb(port + 1);
 137         val |= mask;
 138         outb(reg, port);
 139         outb(val, port + 1);
 140         spin_unlock_irqrestore(&port_lock, flags);
 141 }
 142
 143 static void indirect_resetbit(struct pd6729_socket *socket, unsigned short reg,
 144                               unsigned char mask)
 145 {
 146         unsigned long port;
 147         unsigned char val;
 148         unsigned long flags;
 149
 150         spin_lock_irqsave(&port_lock, flags);
 151         reg = reg + socket->number * 0x40;
 152         port = socket->io_base;
 153         outb(reg, port);
 154         val = inb(port + 1);
 155         val &= ~mask;
 156         outb(reg, port);
 157         outb(val, port + 1);
 158         spin_unlock_irqrestore(&port_lock, flags);
 159 }
 160
 161 static void indirect_write16(struct pd6729_socket *socket, unsigned short reg,
 162                              unsigned short value)
 163 {
 164         unsigned long port;
 165         unsigned char val;
 166         unsigned long flags;
 167
 168         spin_lock_irqsave(&port_lock, flags);
 169         reg = reg + socket->number * 0x40;
 170         port = socket->io_base;
 171
 172         outb(reg, port);
 173         val = value & 255;
 174         outb(val, port + 1);
 175
 176         reg++;
 177
 178         outb(reg, port);
 179         val = value >> 8;
 180         outb(val, port + 1);
 181         spin_unlock_irqrestore(&port_lock, flags);
 182 }
 183
 184 /* Interrupt handler functionality */
 185
 186 static irqreturn_t pd6729_interrupt(int irq, void *dev, struct pt_regs *regs)
 187 {
 188         struct pd6729_socket *socket = (struct pd6729_socket *)dev;
 189         int i;
 190         int loopcount = 0;
 191         int handled = 0;
 192         unsigned int events, active = 0;
 193
 194         while (1) {
 195                 loopcount++;
 196                 if (loopcount > 20) {
 197                         printk(KERN_ERR "pd6729: infinite eventloop "
 198                                "in interrupt\n");
 199                         break;
 200                 }
 201
 202                 active = 0;
 203
 204                 for (i = 0; i < MAX_SOCKETS; i++) {
 205                         unsigned int csc;
 206
 207                         /* card status change register */
 208                         csc = indirect_read(&socket[i], I365_CSC);
 209                         if (csc == 0)  /* no events on this socket */
 210                                 continue;
 211
 212                         handled = 1;
 213                         events = 0;
 214
 215                         if (csc & I365_CSC_DETECT) {
 216                                 events |= SS_DETECT;
 217                                 dprintk("Card detected in socket %i!\n", i);
 218                         }
 219
 220                         if (indirect_read(&socket[i], I365_INTCTL)
 221                                                 & I365_PC_IOCARD) {
 222                                 /* For IO/CARDS, bit 0 means "read the card" */
 223                                 events |= (csc & I365_CSC_STSCHG)
 224                                                 ? SS_STSCHG : 0;
 225                         } else {
 226                                 /* Check for battery/ready events */
 227                                 events |= (csc & I365_CSC_BVD1)
 228                                                 ? SS_BATDEAD : 0;
 229                                 events |= (csc & I365_CSC_BVD2)
 230                                                 ? SS_BATWARN : 0;
 231                                 events |= (csc & I365_CSC_READY)
 232                                                 ? SS_READY : 0;
 233                         }
 234
 235                         if (events) {
 236                                 pcmcia_parse_events(&socket[i].socket, events);
 237                         }
 238                         active |= events;
 239                 }
 240
 241                 if (active == 0) /* no more events to handle */
 242                         break;
 243         }
 244         return IRQ_RETVAL(handled);
 245 }
 246
 247 /* socket functions */
 248
 249 static void pd6729_interrupt_wrapper(unsigned long data)
 250 {
 251         struct pd6729_socket *socket = (struct pd6729_socket *) data;
 252
 253         pd6729_interrupt(0, (void *)socket, NULL);
 254         mod_timer(&socket->poll_timer, jiffies + HZ);
 255 }
 256
 257 static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
 258 {
 259         struct pd6729_socket *socket
 260                         = container_of(sock, struct pd6729_socket, socket);
 261         unsigned int status;
 262         unsigned int data;
 263         struct pd6729_socket *t;
 264
 265         /* Interface Status Register */
 266         status = indirect_read(socket, I365_STATUS);
 267         *value = 0;
 268
 269         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
 270                 *value |= SS_DETECT;
 271         }
 272
 273         /*
 274          * IO cards have a different meaning of bits 0,1
 275          * Also notice the inverse-logic on the bits
 276          */
 277         if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
 278                 /* IO card */
 279                 if (!(status & I365_CS_STSCHG))
 280                         *value |= SS_STSCHG;
 281         } else {
 282                 /* non I/O card */
 283                 if (!(status & I365_CS_BVD1))
 284                         *value |= SS_BATDEAD;
 285                 if (!(status & I365_CS_BVD2))
 286                         *value |= SS_BATWARN;
 287         }
 288
 289         if (status & I365_CS_WRPROT)
 290                 *value |= SS_WRPROT;    /* card is write protected */
 291
 292         if (status & I365_CS_READY)
 293                 *value |= SS_READY;     /* card is not busy */
 294
 295         if (status & I365_CS_POWERON)
 296                 *value |= SS_POWERON;   /* power is applied to the card */
 297
 298         t = (socket->number) ? socket : socket + 1;
 299         indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
 300         data = indirect_read16(t, PD67_EXT_DATA);
 301         *value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
 302
 303         return 0;
 304 }
 305
 306
 307 static int pd6729_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 308 {
 309         struct pd6729_socket *socket
 310                         = container_of(sock, struct pd6729_socket, socket);
 311         unsigned char reg, vcc, vpp;
 312
 313         state->flags    = 0;
 314         state->Vcc      = 0;
 315         state->Vpp      = 0;
 316         state->io_irq   = 0;
 317         state->csc_mask = 0;
 318
 319         /* First the power status of the socket */
 320         reg = indirect_read(socket, I365_POWER);
 321
 322         if (reg & I365_PWR_AUTO)
 323                 state->flags |= SS_PWR_AUTO;  /* Automatic Power Switch */
 324
 325         if (reg & I365_PWR_OUT)
 326                 state->flags |= SS_OUTPUT_ENA; /* Output signals are enabled */
 327
 328         vcc = reg & I365_VCC_MASK;    vpp = reg & I365_VPP1_MASK;
 329
 330         if (reg & I365_VCC_5V) {
 331                 state->Vcc = (indirect_read(socket, PD67_MISC_CTL_1) &
 332                         PD67_MC1_VCC_3V) ? 33 : 50;
 333
 334                 if (vpp == I365_VPP1_5V) {
 335                         if (state->Vcc == 50)
 336                                 state->Vpp = 50;
 337                         else
 338                                 state->Vpp = 33;
 339                 }
 340                 if (vpp == I365_VPP1_12V)
 341                         state->Vpp = 120;
 342         }
 343
 344         /* Now the IO card, RESET flags and IO interrupt */
 345         reg = indirect_read(socket, I365_INTCTL);
 346
 347         if ((reg & I365_PC_RESET) == 0)
 348                 state->flags |= SS_RESET;
 349         if (reg & I365_PC_IOCARD)
 350                 state->flags |= SS_IOCARD; /* This is an IO card */
 351
 352         /* Set the IRQ number */
 353         state->io_irq = socket->card_irq;
 354
 355         /* Card status change */
 356         reg = indirect_read(socket, I365_CSCINT);
 357
 358         if (reg & I365_CSC_DETECT)
 359                 state->csc_mask |= SS_DETECT; /* Card detect is enabled */
 360
 361         if (state->flags & SS_IOCARD) {/* IO Cards behave different */
 362                 if (reg & I365_CSC_STSCHG)
 363                         state->csc_mask |= SS_STSCHG;
 364         } else {
 365                 if (reg & I365_CSC_BVD1)
 366                         state->csc_mask |= SS_BATDEAD;
 367                 if (reg & I365_CSC_BVD2)
 368                         state->csc_mask |= SS_BATWARN;
 369                 if (reg & I365_CSC_READY)
 370                         state->csc_mask |= SS_READY;
 371         }
 372
 373         return 0;
 374 }
 375
 376 static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 377 {
 378         struct pd6729_socket *socket
 379                         = container_of(sock, struct pd6729_socket, socket);
 380         unsigned char reg, data;
 381
 382         /* First, set the global controller options */
 383         indirect_write(socket, I365_GBLCTL, 0x00);
 384         indirect_write(socket, I365_GENCTL, 0x00);
 385
 386         /* Values for the IGENC register */
 387         socket->card_irq = state->io_irq;
 388
 389         reg = 0;
 390         /* The reset bit has "inverse" logic */
 391         if (!(state->flags & SS_RESET))
 392                 reg |= I365_PC_RESET;
 393         if (state->flags & SS_IOCARD)
 394                 reg |= I365_PC_IOCARD;
 395
 396         /* IGENC, Interrupt and General Control Register */
 397         indirect_write(socket, I365_INTCTL, reg);
 398
 399         /* Power registers */
 400
 401         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
 402
 403         if (state->flags & SS_PWR_AUTO) {
 404                 dprintk("Auto power\n");
 405                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
 406         }
 407         if (state->flags & SS_OUTPUT_ENA) {
 408                 dprintk("Power Enabled\n");
 409                 reg |= I365_PWR_OUT;    /* enable power */
 410         }
 411
 412         switch (state->Vcc) {
 413         case 0:
 414                 break;
 415         case 33:
 416                 dprintk("setting voltage to Vcc to 3.3V on socket %i\n",
 417                         socket->number);
 418                 reg |= I365_VCC_5V;
 419                 indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 420                 break;
 421         case 50:
 422                 dprintk("setting voltage to Vcc to 5V on socket %i\n",
 423                         socket->number);
 424                 reg |= I365_VCC_5V;
 425                 indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 426                 break;
 427         default:
 428                 dprintk("pd6729: pd6729_set_socket called with "
 429                                 "invalid VCC power value: %i\n",
 430                         state->Vcc);
 431                 return -EINVAL;
 432         }
 433
 434         switch (state->Vpp) {
 435         case 0:
 436                 dprintk("not setting Vpp on socket %i\n", socket->number);
 437                 break;
 438         case 33:
 439         case 50:
 440                 dprintk("setting Vpp to Vcc for socket %i\n", socket->number);
 441                 reg |= I365_VPP1_5V;
 442                 break;
 443         case 120:
 444                 dprintk("setting Vpp to 12.0\n");
 445                 reg |= I365_VPP1_12V;
 446                 break;
 447         default:
 448                 dprintk("pd6729: pd6729_set_socket called with invalid VPP power value: %i\n",
 449                         state->Vpp);
 450                 return -EINVAL;
 451         }
 452
 453         /* only write if changed */
 454         if (reg != indirect_read(socket, I365_POWER))
 455                 indirect_write(socket, I365_POWER, reg);
 456
 457         if (irq_mode == 1) {
 458                  /* all interrupts are to be done as PCI interrupts */
 459                 data = PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ;
 460         } else
 461                 data = 0;
 462
 463         indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
 464         indirect_write(socket, PD67_EXT_DATA, data);
 465
 466         /* Enable specific interrupt events */
 467
 468         reg = 0x00;
 469         if (state->csc_mask & SS_DETECT) {
 470                 reg |= I365_CSC_DETECT;
 471         }
 472         if (state->flags & SS_IOCARD) {
 473                 if (state->csc_mask & SS_STSCHG)
 474                         reg |= I365_CSC_STSCHG;
 475         } else {
 476                 if (state->csc_mask & SS_BATDEAD)
 477                         reg |= I365_CSC_BVD1;
 478                 if (state->csc_mask & SS_BATWARN)
 479                         reg |= I365_CSC_BVD2;
 480                 if (state->csc_mask & SS_READY)
 481                         reg |= I365_CSC_READY;
 482         }
 483         if (irq_mode == 1)
 484                 reg |= 0x30;    /* management IRQ: PCI INTA# = "irq 3" */
 485         indirect_write(socket, I365_CSCINT, reg);
 486
 487         reg = indirect_read(socket, I365_INTCTL);
 488         if (irq_mode == 1)
 489                 reg |= 0x03;    /* card IRQ: PCI INTA# = "irq 3" */
 490         else
 491                 reg |= socket->card_irq;
 492         indirect_write(socket, I365_INTCTL, reg);
 493
 494         /* now clear the (probably bogus) pending stuff by doing a dummy read */
 495         (void)indirect_read(socket, I365_CSC);
 496
 497         return 0;
 498 }
 499
 500 static int pd6729_set_io_map(struct pcmcia_socket *sock,
 501                              struct pccard_io_map *io)
 502 {
 503         struct pd6729_socket *socket
 504                         = container_of(sock, struct pd6729_socket, socket);
 505         unsigned char map, ioctl;
 506
 507         map = io->map;
 508
 509         /* Check error conditions */
 510         if (map > 1) {
 511                 dprintk("pd6729_set_io_map with invalid map");
 512                 return -EINVAL;
 513         }
 514
 515         /* Turn off the window before changing anything */
 516         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
 517                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 518
 519         /* dprintk("set_io_map: Setting range to %x - %x\n",
 520            io->start, io->stop);*/
 521
 522         /* write the new values */
 523         indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
 524         indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
 525
 526         ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 527
 528         if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
 529         if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
 530         if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
 531
 532         indirect_write(socket, I365_IOCTL, ioctl);
 533
 534         /* Turn the window back on if needed */
 535         if (io->flags & MAP_ACTIVE)
 536                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 537
 538         return 0;
 539 }
 540
 541 static int pd6729_set_mem_map(struct pcmcia_socket *sock,
 542                               struct pccard_mem_map *mem)
 543 {
 544         struct pd6729_socket *socket
 545                          = container_of(sock, struct pd6729_socket, socket);
 546         unsigned short base, i;
 547         unsigned char map;
 548
 549         map = mem->map;
 550         if (map > 4) {
 551                 printk("pd6729_set_mem_map: invalid map");
 552                 return -EINVAL;
 553         }
 554
 555         if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
 556                 printk("pd6729_set_mem_map: invalid address / speed");
 557                 return -EINVAL;
 558         }
 559
 560         /* Turn off the window before changing anything */
 561         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
 562                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 563
 564         /* write the start address */
 565         base = I365_MEM(map);
 566         i = (mem->res->start >> 12) & 0x0fff;
 567         if (mem->flags & MAP_16BIT)
 568                 i |= I365_MEM_16BIT;
 569         if (mem->flags & MAP_0WS)
 570                 i |= I365_MEM_0WS;
 571         indirect_write16(socket, base + I365_W_START, i);
 572
 573         /* write the stop address */
 574
 575         i= (mem->res->end >> 12) & 0x0fff;
 576         switch (to_cycles(mem->speed)) {
 577         case 0:
 578                 break;
 579         case 1:
 580                 i |= I365_MEM_WS0;
 581                 break;
 582         case 2:
 583                 i |= I365_MEM_WS1;
 584                 break;
 585         default:
 586                 i |= I365_MEM_WS1 | I365_MEM_WS0;
 587                 break;
 588         }
 589
 590         indirect_write16(socket, base + I365_W_STOP, i);
 591
 592         /* Take care of high byte */
 593         indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
 594         indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);
 595
 596         /* card start */
 597
 598         i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
 599         if (mem->flags & MAP_WRPROT)
 600                 i |= I365_MEM_WRPROT;
 601         if (mem->flags & MAP_ATTRIB) {
 602                 /* dprintk("requesting attribute memory for socket %i\n",
 603                         socket->number);*/
 604                 i |= I365_MEM_REG;
 605         } else {
 606                 /* dprintk("requesting normal memory for socket %i\n",
 607                         socket->number);*/
 608         }
 609         indirect_write16(socket, base + I365_W_OFF, i);
 610
 611         /* Enable the window if necessary */
 612         if (mem->flags & MAP_ACTIVE)
 613                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 614
 615         return 0;
 616 }
 617
 618 static int pd6729_init(struct pcmcia_socket *sock)
 619 {
 620         int i;
 621         struct resource res = { .end = 0x0fff };
 622         pccard_io_map io = { 0, 0, 0, 0, 1 };
 623         pccard_mem_map mem = { .res = &res, };
 624
 625         pd6729_set_socket(sock, &dead_socket);
 626         for (i = 0; i < 2; i++) {
 627                 io.map = i;
 628                 pd6729_set_io_map(sock, &io);
 629         }
 630         for (i = 0; i < 5; i++) {
 631                 mem.map = i;
 632                 pd6729_set_mem_map(sock, &mem);
 633         }
 634
 635         return 0;
 636 }
 637
 638
 639 /* the pccard structure and its functions */
 640 static struct pccard_operations pd6729_operations = {
 641         .init                   = pd6729_init,
 642         .get_status             = pd6729_get_status,
 643         .get_socket             = pd6729_get_socket,
 644         .set_socket             = pd6729_set_socket,
 645         .set_io_map             = pd6729_set_io_map,
 646         .set_mem_map            = pd6729_set_mem_map,
 647 };
 648
 649 static irqreturn_t pd6729_test(int irq, void *dev, struct pt_regs *regs)
 650 {
 651         dprintk("-> hit on irq %d\n", irq);
 652         return IRQ_HANDLED;
 653 }
 654
 655 static int pd6729_check_irq(int irq, int flags)
 656 {
 657         if (request_irq(irq, pd6729_test, flags, "x", pd6729_test) != 0)
 658                 return -1;
 659         free_irq(irq, pd6729_test);
 660         return 0;
 661 }
 662
 663 static u_int __init pd6729_isa_scan(void)
 664 {
 665         u_int mask0, mask = 0;
 666         int i;
 667
 668         if (irq_mode == 1) {
 669                 printk(KERN_INFO "pd6729: PCI card interrupts, "
 670                                                 "PCI status changes\n");
 671                 return 0;
 672         }
 673
 674         if (irq_list_count == 0)
 675                 mask0 = 0xffff;
 676         else
 677                 for (i = mask0 = 0; i < irq_list_count; i++)
 678                         mask0 |= (1<<irq_list[i]);
 679
 680         mask0 &= PD67_MASK;
 681
 682         /* just find interrupts that aren't in use */
 683         for (i = 0; i < 16; i++)
 684                 if ((mask0 & (1 << i)) && (pd6729_check_irq(i, 0) == 0))
 685                         mask |= (1 << i);
 686
 687         printk(KERN_INFO "pd6729: ISA irqs = ");
 688         for (i = 0; i < 16; i++)
 689                 if (mask & (1<<i))
 690                         printk("%s%d", ((mask & ((1<<i)-1)) ? "," : ""), i);
 691
 692         if (mask == 0) printk("none!");
 693
 694         printk("  polling status changes.\n");
 695
 696         return mask;
 697 }
 698
 699 static int __devinit pd6729_pci_probe(struct pci_dev *dev,
 700                                       const struct pci_device_id *id)
 701 {
 702         int i, j, ret;
 703         u_int mask;
 704         char configbyte;
 705         struct pd6729_socket *socket;
 706
 707         socket = kmalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS,
 708                          GFP_KERNEL);
 709         if (!socket)
 710                 return -ENOMEM;
 711
 712         memset(socket, 0, sizeof(struct pd6729_socket) * MAX_SOCKETS);
 713
 714         if ((ret = pci_enable_device(dev)))
 715                 goto err_out_free_mem;
 716
 717         printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge "
 718                 "at 0x%lx on irq %d\n", pci_resource_start(dev, 0), dev->irq);
 719         /*
 720          * Since we have no memory BARs some firmware may not
 721          * have had PCI_COMMAND_MEMORY enabled, yet the device needs it.
 722          */
 723         pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
 724         if (!(configbyte & PCI_COMMAND_MEMORY)) {
 725                 printk(KERN_DEBUG "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
 726                 configbyte |= PCI_COMMAND_MEMORY;
 727                 pci_write_config_byte(dev, PCI_COMMAND, configbyte);
 728         }
 729
 730         ret = pci_request_regions(dev, "pd6729");
 731         if (ret) {
 732                 printk(KERN_INFO "pd6729: pci request region failed.\n");
 733                 goto err_out_disable;
 734         }
 735
 736         if (dev->irq == NO_IRQ)
 737                 irq_mode = 0;   /* fall back to ISA interrupt mode */
 738
 739         mask = pd6729_isa_scan();
 740         if (irq_mode == 0 && mask == 0) {
 741                 printk(KERN_INFO "pd6729: no ISA interrupt is available.\n");
 742                 goto err_out_free_res;
 743         }
 744
 745         for (i = 0; i < MAX_SOCKETS; i++) {
 746                 socket[i].io_base = pci_resource_start(dev, 0);
 747                 socket[i].socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
 748                 socket[i].socket.map_size = 0x1000;
 749                 socket[i].socket.irq_mask = mask;
 750                 socket[i].socket.pci_irq  = dev->irq;
 751                 socket[i].socket.owner = THIS_MODULE;
 752
 753                 socket[i].number = i;
 754
 755                 socket[i].socket.ops = &pd6729_operations;
 756                 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 757                 socket[i].socket.dev.dev = &dev->dev;
 758                 socket[i].socket.driver_data = &socket[i];
 759         }
 760
 761         pci_set_drvdata(dev, socket);
 762         if (irq_mode == 1) {
 763                 /* Register the interrupt handler */
 764                 if ((ret = request_irq(dev->irq, pd6729_interrupt, SA_SHIRQ,
 765                                                         "pd6729", socket))) {
 766                         printk(KERN_ERR "pd6729: Failed to register irq %d, "
 767                                                         "aborting\n", dev->irq);
 768                         goto err_out_free_res;
 769                 }
 770         } else {
 771                 /* poll Card status change */
 772                 init_timer(&socket->poll_timer);
 773                 socket->poll_timer.function = pd6729_interrupt_wrapper;
 774                 socket->poll_timer.data = (unsigned long)socket;
 775                 socket->poll_timer.expires = jiffies + HZ;
 776                 add_timer(&socket->poll_timer);
 777         }
 778
 779         for (i = 0; i < MAX_SOCKETS; i++) {
 780                 ret = pcmcia_register_socket(&socket[i].socket);
 781                 if (ret) {
 782                         printk(KERN_INFO "pd6729: pcmcia_register_socket "
 783                                                "failed.\n");
 784                         for (j = 0; j < i ; j++)
 785                                 pcmcia_unregister_socket(&socket[j].socket);
 786                         goto err_out_free_res2;
 787                 }
 788         }
 789
 790         return 0;
 791
 792  err_out_free_res2:
 793         if (irq_mode == 1)
 794                 free_irq(dev->irq, socket);
 795         else
 796                 del_timer_sync(&socket->poll_timer);
 797  err_out_free_res:
 798         pci_release_regions(dev);
 799  err_out_disable:
 800         pci_disable_device(dev);
 801
 802  err_out_free_mem:
 803         kfree(socket);
 804         return ret;
 805 }
 806
 807 static void __devexit pd6729_pci_remove(struct pci_dev *dev)
 808 {
 809         int i;
 810         struct pd6729_socket *socket = pci_get_drvdata(dev);
 811
 812         for (i = 0; i < MAX_SOCKETS; i++) {
 813                 /* Turn off all interrupt sources */
 814                 indirect_write(&socket[i], I365_CSCINT, 0);
 815                 indirect_write(&socket[i], I365_INTCTL, 0);
 816
 817                 pcmcia_unregister_socket(&socket[i].socket);
 818         }
 819
 820         if (irq_mode == 1)
 821                 free_irq(dev->irq, socket);
 822         else
 823                 del_timer_sync(&socket->poll_timer);
 824         pci_release_regions(dev);
 825         pci_disable_device(dev);
 826
 827         kfree(socket);
 828 }
 829
 830 static int pd6729_socket_suspend(struct pci_dev *dev, pm_message_t state)
 831 {
 832         return pcmcia_socket_dev_suspend(&dev->dev, state);
 833 }
 834
 835 static int pd6729_socket_resume(struct pci_dev *dev)
 836 {
 837         return pcmcia_socket_dev_resume(&dev->dev);
 838 }
 839
 840 static struct pci_device_id pd6729_pci_ids[] = {
 841         {
 842                 .vendor         = PCI_VENDOR_ID_CIRRUS,
 843                 .device         = PCI_DEVICE_ID_CIRRUS_6729,
 844                 .subvendor      = PCI_ANY_ID,
 845                 .subdevice      = PCI_ANY_ID,
 846         },
 847         { }
 848 };
 849 MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
 850
 851 static struct pci_driver pd6729_pci_drv = {
 852         .name           = "pd6729",
 853         .id_table       = pd6729_pci_ids,
 854         .probe          = pd6729_pci_probe,
 855         .remove         = __devexit_p(pd6729_pci_remove),
 856         .suspend        = pd6729_socket_suspend,
 857         .resume         = pd6729_socket_resume,
 858 };
 859
 860 static int pd6729_module_init(void)
 861 {
 862         return pci_register_driver(&pd6729_pci_drv);
 863 }
 864
 865 static void pd6729_module_exit(void)
 866 {
 867         pci_unregister_driver(&pd6729_pci_drv);
 868 }
 869
 870 module_init(pd6729_module_init);
 871 module_exit(pd6729_module_exit);