git.oblomov.eu Git - linux-2.6/blob - drivers/pcmcia/vrc4171_card.c

   1 /*
   2  * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
   3  *
   4  * Copyright (C) 2003-2005  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include <linux/init.h>
  21 #include <linux/ioport.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/module.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/sched.h>
  26 #include <linux/types.h>
  27
  28 #include <asm/io.h>
  29
  30 #include <pcmcia/ss.h>
  31
  32 #include "i82365.h"
  33
  34 MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
  35 MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
  36 MODULE_LICENSE("GPL");
  37
  38 #define CARD_MAX_SLOTS          2
  39 #define CARD_SLOTA              0
  40 #define CARD_SLOTB              1
  41 #define CARD_SLOTB_OFFSET       0x40
  42
  43 #define CARD_MEM_START          0x10000000
  44 #define CARD_MEM_END            0x13ffffff
  45 #define CARD_MAX_MEM_OFFSET     0x3ffffff
  46 #define CARD_MAX_MEM_SPEED      1000
  47
  48 #define CARD_CONTROLLER_INDEX   0x03e0
  49 #define CARD_CONTROLLER_DATA    0x03e1
  50  /* Power register */
  51   #define VPP_GET_VCC           0x01
  52   #define POWER_ENABLE          0x10
  53  #define CARD_VOLTAGE_SENSE     0x1f
  54   #define VCC_3VORXV_CAPABLE    0x00
  55   #define VCC_XV_ONLY           0x01
  56   #define VCC_3V_CAPABLE        0x02
  57   #define VCC_5V_ONLY           0x03
  58  #define CARD_VOLTAGE_SELECT    0x2f
  59   #define VCC_3V                0x01
  60   #define VCC_5V                0x00
  61   #define VCC_XV                0x02
  62   #define VCC_STATUS_3V         0x02
  63   #define VCC_STATUS_5V         0x01
  64   #define VCC_STATUS_XV         0x03
  65  #define GLOBAL_CONTROL         0x1e
  66   #define EXWRBK                0x04
  67   #define IRQPM_EN              0x08
  68   #define CLRPMIRQ              0x10
  69
  70 #define INTERRUPT_STATUS        0x05fa
  71  #define IRQ_A                  0x02
  72  #define IRQ_B                  0x04
  73
  74 #define CONFIGURATION1          0x05fe
  75  #define SLOTB_CONFIG           0xc000
  76  #define SLOTB_NONE             0x0000
  77  #define SLOTB_PCCARD           0x4000
  78  #define SLOTB_CF               0x8000
  79  #define SLOTB_FLASHROM         0xc000
  80
  81 #define CARD_CONTROLLER_START   CARD_CONTROLLER_INDEX
  82 #define CARD_CONTROLLER_END     CARD_CONTROLLER_DATA
  83
  84 #define IO_MAX_MAPS     2
  85 #define MEM_MAX_MAPS    5
  86
  87 typedef enum {
  88         SLOT_PROBE = 0,
  89         SLOT_NOPROBE_IO,
  90         SLOT_NOPROBE_MEM,
  91         SLOT_NOPROBE_ALL,
  92         SLOT_INITIALIZED,
  93 } vrc4171_slot_t;
  94
  95 typedef enum {
  96         SLOTB_IS_NONE,
  97         SLOTB_IS_PCCARD,
  98         SLOTB_IS_CF,
  99         SLOTB_IS_FLASHROM,
 100 } vrc4171_slotb_t;
 101
 102 typedef struct vrc4171_socket {
 103         vrc4171_slot_t slot;
 104         struct pcmcia_socket pcmcia_socket;
 105         char name[24];
 106         int csc_irq;
 107         int io_irq;
 108 } vrc4171_socket_t;
 109
 110 static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
 111 static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
 112 static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
 113 static unsigned int vrc4171_irq;
 114 static uint16_t vrc4171_irq_mask = 0xdeb8;
 115
 116 static struct resource vrc4171_card_resource[3] = {
 117         {       .name           = vrc4171_card_name,
 118                 .start          = CARD_CONTROLLER_START,
 119                 .end            = CARD_CONTROLLER_END,
 120                 .flags          = IORESOURCE_IO,        },
 121         {       .name           = vrc4171_card_name,
 122                 .start          = INTERRUPT_STATUS,
 123                 .end            = INTERRUPT_STATUS,
 124                 .flags          = IORESOURCE_IO,        },
 125         {       .name           = vrc4171_card_name,
 126                 .start          = CONFIGURATION1,
 127                 .end            = CONFIGURATION1,
 128                 .flags          = IORESOURCE_IO,        },
 129 };
 130
 131 static struct platform_device vrc4171_card_device = {
 132         .name           = vrc4171_card_name,
 133         .id             = 0,
 134         .num_resources  = 3,
 135         .resource       = vrc4171_card_resource,
 136 };
 137
 138 static inline uint16_t vrc4171_get_irq_status(void)
 139 {
 140         return inw(INTERRUPT_STATUS);
 141 }
 142
 143 static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config)
 144 {
 145         uint16_t config1;
 146
 147         config1 = inw(CONFIGURATION1);
 148         config1 &= ~SLOTB_CONFIG;
 149
 150         switch (config) {
 151         case SLOTB_IS_NONE:
 152                 config1 |= SLOTB_NONE;
 153                 break;
 154         case SLOTB_IS_PCCARD:
 155                 config1 |= SLOTB_PCCARD;
 156                 break;
 157         case SLOTB_IS_CF:
 158                 config1 |= SLOTB_CF;
 159                 break;
 160         case SLOTB_IS_FLASHROM:
 161                 config1 |= SLOTB_FLASHROM;
 162                 break;
 163         default:
 164                 break;
 165         }
 166
 167         outw(config1, CONFIGURATION1);
 168 }
 169
 170 static inline uint8_t exca_read_byte(int slot, uint8_t index)
 171 {
 172         if (slot == CARD_SLOTB)
 173                 index += CARD_SLOTB_OFFSET;
 174
 175         outb(index, CARD_CONTROLLER_INDEX);
 176         return inb(CARD_CONTROLLER_DATA);
 177 }
 178
 179 static inline uint16_t exca_read_word(int slot, uint8_t index)
 180 {
 181         uint16_t data;
 182
 183         if (slot == CARD_SLOTB)
 184                 index += CARD_SLOTB_OFFSET;
 185
 186         outb(index++, CARD_CONTROLLER_INDEX);
 187         data = inb(CARD_CONTROLLER_DATA);
 188
 189         outb(index, CARD_CONTROLLER_INDEX);
 190         data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
 191
 192         return data;
 193 }
 194
 195 static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
 196 {
 197         if (slot == CARD_SLOTB)
 198                 index += CARD_SLOTB_OFFSET;
 199
 200         outb(index, CARD_CONTROLLER_INDEX);
 201         outb(data, CARD_CONTROLLER_DATA);
 202
 203         return data;
 204 }
 205
 206 static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
 207 {
 208         if (slot == CARD_SLOTB)
 209                 index += CARD_SLOTB_OFFSET;
 210
 211         outb(index++, CARD_CONTROLLER_INDEX);
 212         outb(data, CARD_CONTROLLER_DATA);
 213
 214         outb(index, CARD_CONTROLLER_INDEX);
 215         outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
 216
 217         return data;
 218 }
 219
 220 static inline int search_nonuse_irq(void)
 221 {
 222         int i;
 223
 224         for (i = 0; i < 16; i++) {
 225                 if (vrc4171_irq_mask & (1 << i)) {
 226                         vrc4171_irq_mask &= ~(1 << i);
 227                         return i;
 228                 }
 229         }
 230
 231         return -1;
 232 }
 233
 234 static int pccard_init(struct pcmcia_socket *sock)
 235 {
 236         vrc4171_socket_t *socket;
 237         unsigned int slot;
 238
 239         sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
 240         sock->irq_mask = 0;
 241         sock->map_size = 0x1000;
 242         sock->pci_irq = vrc4171_irq;
 243
 244         slot = sock->sock;
 245         socket = &vrc4171_sockets[slot];
 246         socket->csc_irq = search_nonuse_irq();
 247         socket->io_irq = search_nonuse_irq();
 248
 249         return 0;
 250 }
 251
 252 static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
 253 {
 254         unsigned int slot;
 255         uint8_t status, sense;
 256         u_int val = 0;
 257
 258         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
 259                 return -EINVAL;
 260
 261         slot = sock->sock;
 262
 263         status = exca_read_byte(slot, I365_STATUS);
 264         if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
 265                 if (status & I365_CS_STSCHG)
 266                         val |= SS_STSCHG;
 267         } else {
 268                 if (!(status & I365_CS_BVD1))
 269                         val |= SS_BATDEAD;
 270                 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
 271                         val |= SS_BATWARN;
 272         }
 273         if ((status & I365_CS_DETECT) == I365_CS_DETECT)
 274                 val |= SS_DETECT;
 275         if (status & I365_CS_WRPROT)
 276                 val |= SS_WRPROT;
 277         if (status & I365_CS_READY)
 278                 val |= SS_READY;
 279         if (status & I365_CS_POWERON)
 280                 val |= SS_POWERON;
 281
 282         sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
 283         switch (sense) {
 284         case VCC_3VORXV_CAPABLE:
 285                 val |= SS_3VCARD | SS_XVCARD;
 286                 break;
 287         case VCC_XV_ONLY:
 288                 val |= SS_XVCARD;
 289                 break;
 290         case VCC_3V_CAPABLE:
 291                 val |= SS_3VCARD;
 292                 break;
 293         default:
 294                 /* 5V only */
 295                 break;
 296         }
 297
 298         *value = val;
 299
 300         return 0;
 301 }
 302
 303 static inline u_char get_Vcc_value(uint8_t voltage)
 304 {
 305         switch (voltage) {
 306         case VCC_STATUS_3V:
 307                 return 33;
 308         case VCC_STATUS_5V:
 309                 return 50;
 310         default:
 311                 break;
 312         }
 313
 314         return 0;
 315 }
 316
 317 static inline u_char get_Vpp_value(uint8_t power, u_char Vcc)
 318 {
 319         if ((power & 0x03) == 0x01 || (power & 0x03) == 0x02)
 320                 return Vcc;
 321
 322         return 0;
 323 }
 324
 325 static int pccard_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 326 {
 327         unsigned int slot;
 328         uint8_t power, voltage, control, cscint;
 329
 330         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || state == NULL)
 331                 return -EINVAL;
 332
 333         slot = sock->sock;
 334
 335         power = exca_read_byte(slot, I365_POWER);
 336         voltage = exca_read_byte(slot, CARD_VOLTAGE_SELECT);
 337
 338         state->Vcc = get_Vcc_value(voltage);
 339         state->Vpp = get_Vpp_value(power, state->Vcc);
 340
 341         state->flags = 0;
 342         if (power & POWER_ENABLE)
 343                 state->flags |= SS_PWR_AUTO;
 344         if (power & I365_PWR_OUT)
 345                 state->flags |= SS_OUTPUT_ENA;
 346
 347         control = exca_read_byte(slot, I365_INTCTL);
 348         if (control & I365_PC_IOCARD)
 349                 state->flags |= SS_IOCARD;
 350         if (!(control & I365_PC_RESET))
 351                 state->flags |= SS_RESET;
 352
 353         cscint = exca_read_byte(slot, I365_CSCINT);
 354         state->csc_mask = 0;
 355         if (state->flags & SS_IOCARD) {
 356                 if (cscint & I365_CSC_STSCHG)
 357                         state->flags |= SS_STSCHG;
 358         } else {
 359                 if (cscint & I365_CSC_BVD1)
 360                         state->csc_mask |= SS_BATDEAD;
 361                 if (cscint & I365_CSC_BVD2)
 362                         state->csc_mask |= SS_BATWARN;
 363         }
 364         if (cscint & I365_CSC_READY)
 365                 state->csc_mask |= SS_READY;
 366         if (cscint & I365_CSC_DETECT)
 367                 state->csc_mask |= SS_DETECT;
 368
 369         return 0;
 370 }
 371
 372 static inline uint8_t set_Vcc_value(u_char Vcc)
 373 {
 374         switch (Vcc) {
 375         case 33:
 376                 return VCC_3V;
 377         case 50:
 378                 return VCC_5V;
 379         }
 380
 381         /* Small voltage is chosen for safety. */
 382         return VCC_3V;
 383 }
 384
 385 static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 386 {
 387         vrc4171_socket_t *socket;
 388         unsigned int slot;
 389         uint8_t voltage, power, control, cscint;
 390
 391         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 392             (state->Vpp != state->Vcc && state->Vpp != 0) ||
 393             (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
 394                 return -EINVAL;
 395
 396         slot = sock->sock;
 397         socket = &vrc4171_sockets[slot];
 398
 399         spin_lock_irq(&sock->lock);
 400
 401         voltage = set_Vcc_value(state->Vcc);
 402         exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
 403
 404         power = POWER_ENABLE;
 405         if (state->Vpp == state->Vcc)
 406                 power |= VPP_GET_VCC;
 407         if (state->flags & SS_OUTPUT_ENA)
 408                 power |= I365_PWR_OUT;
 409         exca_write_byte(slot, I365_POWER, power);
 410
 411         control = 0;
 412         if (state->io_irq != 0)
 413                 control |= socket->io_irq;
 414         if (state->flags & SS_IOCARD)
 415                 control |= I365_PC_IOCARD;
 416         if (state->flags & SS_RESET)
 417                 control &= ~I365_PC_RESET;
 418         else
 419                 control |= I365_PC_RESET;
 420         exca_write_byte(slot, I365_INTCTL, control);
 421
 422         cscint = 0;
 423         exca_write_byte(slot, I365_CSCINT, cscint);
 424         exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
 425         if (state->csc_mask != 0)
 426                 cscint |= socket->csc_irq << 8;
 427         if (state->flags & SS_IOCARD) {
 428                 if (state->csc_mask & SS_STSCHG)
 429                         cscint |= I365_CSC_STSCHG;
 430         } else {
 431                 if (state->csc_mask & SS_BATDEAD)
 432                         cscint |= I365_CSC_BVD1;
 433                 if (state->csc_mask & SS_BATWARN)
 434                         cscint |= I365_CSC_BVD2;
 435         }
 436         if (state->csc_mask & SS_READY)
 437                 cscint |= I365_CSC_READY;
 438         if (state->csc_mask & SS_DETECT)
 439                 cscint |= I365_CSC_DETECT;
 440         exca_write_byte(slot, I365_CSCINT, cscint);
 441
 442         spin_unlock_irq(&sock->lock);
 443
 444         return 0;
 445 }
 446
 447 static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 448 {
 449         unsigned int slot;
 450         uint8_t ioctl, addrwin;
 451         u_char map;
 452
 453         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 454             io == NULL || io->map >= IO_MAX_MAPS ||
 455             io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
 456                 return -EINVAL;
 457
 458         slot = sock->sock;
 459         map = io->map;
 460
 461         addrwin = exca_read_byte(slot, I365_ADDRWIN);
 462         if (addrwin & I365_ENA_IO(map)) {
 463                 addrwin &= ~I365_ENA_IO(map);
 464                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 465         }
 466
 467         exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
 468         exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
 469
 470         ioctl = 0;
 471         if (io->speed > 0)
 472                 ioctl |= I365_IOCTL_WAIT(map);
 473         if (io->flags & MAP_16BIT)
 474                 ioctl |= I365_IOCTL_16BIT(map);
 475         if (io->flags & MAP_AUTOSZ)
 476                 ioctl |= I365_IOCTL_IOCS16(map);
 477         if (io->flags & MAP_0WS)
 478                 ioctl |= I365_IOCTL_0WS(map);
 479         exca_write_byte(slot, I365_IOCTL, ioctl);
 480
 481         if (io->flags & MAP_ACTIVE) {
 482                 addrwin |= I365_ENA_IO(map);
 483                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 484         }
 485
 486         return 0;
 487 }
 488
 489 static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 490 {
 491         unsigned int slot;
 492         uint16_t start, stop, offset;
 493         uint8_t addrwin;
 494         u_char map;
 495
 496         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 497             mem == NULL || mem->map >= MEM_MAX_MAPS ||
 498             mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
 499             mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
 500             mem->res->start > mem->res->end ||
 501             mem->card_start > CARD_MAX_MEM_OFFSET ||
 502             mem->speed > CARD_MAX_MEM_SPEED)
 503                 return -EINVAL;
 504
 505         slot = sock->sock;
 506         map = mem->map;
 507
 508         addrwin = exca_read_byte(slot, I365_ADDRWIN);
 509         if (addrwin & I365_ENA_MEM(map)) {
 510                 addrwin &= ~I365_ENA_MEM(map);
 511                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 512         }
 513
 514         start = (mem->res->start >> 12) & 0x3fff;
 515         if (mem->flags & MAP_16BIT)
 516                 start |= I365_MEM_16BIT;
 517         exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
 518
 519         stop = (mem->res->end >> 12) & 0x3fff;
 520         switch (mem->speed) {
 521         case 0:
 522                 break;
 523         case 1:
 524                 stop |= I365_MEM_WS0;
 525                 break;
 526         case 2:
 527                 stop |= I365_MEM_WS1;
 528                 break;
 529         default:
 530                 stop |= I365_MEM_WS0 | I365_MEM_WS1;
 531                 break;
 532         }
 533         exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
 534
 535         offset = (mem->card_start >> 12) & 0x3fff;
 536         if (mem->flags & MAP_ATTRIB)
 537                 offset |= I365_MEM_REG;
 538         if (mem->flags & MAP_WRPROT)
 539                 offset |= I365_MEM_WRPROT;
 540         exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
 541
 542         if (mem->flags & MAP_ACTIVE) {
 543                 addrwin |= I365_ENA_MEM(map);
 544                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 545         }
 546
 547         return 0;
 548 }
 549
 550 static struct pccard_operations vrc4171_pccard_operations = {
 551         .init                   = pccard_init,
 552         .get_status             = pccard_get_status,
 553         .get_socket             = pccard_get_socket,
 554         .set_socket             = pccard_set_socket,
 555         .set_io_map             = pccard_set_io_map,
 556         .set_mem_map            = pccard_set_mem_map,
 557 };
 558
 559 static inline unsigned int get_events(int slot)
 560 {
 561         unsigned int events = 0;
 562         uint8_t status, csc;
 563
 564         status = exca_read_byte(slot, I365_STATUS);
 565         csc = exca_read_byte(slot, I365_CSC);
 566
 567         if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
 568                 if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
 569                         events |= SS_STSCHG;
 570         } else {
 571                 if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
 572                         if (!(status & I365_CS_BVD1))
 573                                 events |= SS_BATDEAD;
 574                         else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
 575                                 events |= SS_BATWARN;
 576                 }
 577         }
 578         if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
 579                 events |= SS_READY;
 580         if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
 581                 events |= SS_DETECT;
 582
 583         return events;
 584 }
 585
 586 static irqreturn_t pccard_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 587 {
 588         vrc4171_socket_t *socket;
 589         unsigned int events;
 590         irqreturn_t retval = IRQ_NONE;
 591         uint16_t status;
 592
 593         status = vrc4171_get_irq_status();
 594         if (status & IRQ_A) {
 595                 socket = &vrc4171_sockets[CARD_SLOTA];
 596                 if (socket->slot == SLOT_INITIALIZED) {
 597                         if (status & (1 << socket->csc_irq)) {
 598                                 events = get_events(CARD_SLOTA);
 599                                 if (events != 0) {
 600                                         pcmcia_parse_events(&socket->pcmcia_socket, events);
 601                                         retval = IRQ_HANDLED;
 602                                 }
 603                         }
 604                 }
 605         }
 606
 607         if (status & IRQ_B) {
 608                 socket = &vrc4171_sockets[CARD_SLOTB];
 609                 if (socket->slot == SLOT_INITIALIZED) {
 610                         if (status & (1 << socket->csc_irq)) {
 611                                 events = get_events(CARD_SLOTB);
 612                                 if (events != 0) {
 613                                         pcmcia_parse_events(&socket->pcmcia_socket, events);
 614                                         retval = IRQ_HANDLED;
 615                                 }
 616                         }
 617                 }
 618         }
 619
 620         return retval;
 621 }
 622
 623 static inline void reserve_using_irq(int slot)
 624 {
 625         unsigned int irq;
 626
 627         irq = exca_read_byte(slot, I365_INTCTL);
 628         irq &= 0x0f;
 629         vrc4171_irq_mask &= ~(1 << irq);
 630
 631         irq = exca_read_byte(slot, I365_CSCINT);
 632         irq = (irq & 0xf0) >> 4;
 633         vrc4171_irq_mask &= ~(1 << irq);
 634 }
 635
 636 static int __devinit vrc4171_add_sockets(void)
 637 {
 638         vrc4171_socket_t *socket;
 639         int slot, retval;
 640
 641         for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
 642                 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
 643                         continue;
 644
 645                 socket = &vrc4171_sockets[slot];
 646                 if (socket->slot != SLOT_PROBE) {
 647                         uint8_t addrwin;
 648
 649                         switch (socket->slot) {
 650                         case SLOT_NOPROBE_MEM:
 651                                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
 652                                 addrwin &= 0x1f;
 653                                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 654                                 break;
 655                         case SLOT_NOPROBE_IO:
 656                                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
 657                                 addrwin &= 0xc0;
 658                                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 659                                 break;
 660                         default:
 661                                 break;
 662                         }
 663
 664                         reserve_using_irq(slot);
 665                         continue;
 666                 }
 667
 668                 sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
 669                 socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
 670                 socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
 671                 socket->pcmcia_socket.owner = THIS_MODULE;
 672
 673                 retval = pcmcia_register_socket(&socket->pcmcia_socket);
 674                 if (retval < 0)
 675                         return retval;
 676
 677                 exca_write_byte(slot, I365_ADDRWIN, 0);
 678                 exca_write_byte(slot, GLOBAL_CONTROL, 0);
 679
 680                 socket->slot = SLOT_INITIALIZED;
 681         }
 682
 683         return 0;
 684 }
 685
 686 static void vrc4171_remove_sockets(void)
 687 {
 688         vrc4171_socket_t *socket;
 689         int slot;
 690
 691         for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
 692                 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
 693                         continue;
 694
 695                 socket = &vrc4171_sockets[slot];
 696                 if (socket->slot == SLOT_INITIALIZED)
 697                         pcmcia_unregister_socket(&socket->pcmcia_socket);
 698
 699                 socket->slot = SLOT_PROBE;
 700         }
 701 }
 702
 703 static int __devinit vrc4171_card_setup(char *options)
 704 {
 705         if (options == NULL || *options == '\0')
 706                 return 0;
 707
 708         if (strncmp(options, "irq:", 4) == 0) {
 709                 int irq;
 710                 options += 4;
 711                 irq = simple_strtoul(options, &options, 0);
 712                 if (irq >= 0 && irq < NR_IRQS)
 713                         vrc4171_irq = irq;
 714
 715                 if (*options != ',')
 716                         return 0;
 717                 options++;
 718         }
 719
 720         if (strncmp(options, "slota:", 6) == 0) {
 721                 options += 6;
 722                 if (*options != '\0') {
 723                         if (strncmp(options, "memnoprobe", 10) == 0) {
 724                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
 725                                 options += 10;
 726                         } else if (strncmp(options, "ionoprobe", 9) == 0) {
 727                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
 728                                 options += 9;
 729                         } else if ( strncmp(options, "noprobe", 7) == 0) {
 730                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
 731                                 options += 7;
 732                         }
 733
 734                         if (*options != ',')
 735                                 return 0;
 736                         options++;
 737                 } else
 738                         return 0;
 739
 740         }
 741
 742         if (strncmp(options, "slotb:", 6) == 0) {
 743                 options += 6;
 744                 if (*options != '\0') {
 745                         if (strncmp(options, "pccard", 6) == 0) {
 746                                 vrc4171_slotb = SLOTB_IS_PCCARD;
 747                                 options += 6;
 748                         } else if (strncmp(options, "cf", 2) == 0) {
 749                                 vrc4171_slotb = SLOTB_IS_CF;
 750                                 options += 2;
 751                         } else if (strncmp(options, "flashrom", 8) == 0) {
 752                                 vrc4171_slotb = SLOTB_IS_FLASHROM;
 753                                 options += 8;
 754                         } else if (strncmp(options, "none", 4) == 0) {
 755                                 vrc4171_slotb = SLOTB_IS_NONE;
 756                                 options += 4;
 757                         }
 758
 759                         if (*options != ',')
 760                                 return 0;
 761                         options++;
 762
 763                         if (strncmp(options, "memnoprobe", 10) == 0)
 764                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
 765                         if (strncmp(options, "ionoprobe", 9) == 0)
 766                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
 767                         if (strncmp(options, "noprobe", 7) == 0)
 768                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
 769                 }
 770         }
 771
 772         return 0;
 773 }
 774
 775 __setup("vrc4171_card=", vrc4171_card_setup);
 776
 777 static struct device_driver vrc4171_card_driver = {
 778         .name           = vrc4171_card_name,
 779         .bus            = &platform_bus_type,
 780         .suspend        = pcmcia_socket_dev_suspend,
 781         .resume         = pcmcia_socket_dev_resume,
 782 };
 783
 784 static int __devinit vrc4171_card_init(void)
 785 {
 786         int retval;
 787
 788         retval = driver_register(&vrc4171_card_driver);
 789         if (retval < 0)
 790                 return retval;
 791
 792         retval = platform_device_register(&vrc4171_card_device);
 793         if (retval < 0) {
 794                 driver_unregister(&vrc4171_card_driver);
 795                 return retval;
 796         }
 797
 798         vrc4171_set_multifunction_pin(vrc4171_slotb);
 799
 800         retval = vrc4171_add_sockets();
 801         if (retval == 0)
 802                 retval = request_irq(vrc4171_irq, pccard_interrupt, SA_SHIRQ,
 803                                      vrc4171_card_name, vrc4171_sockets);
 804
 805         if (retval < 0) {
 806                 vrc4171_remove_sockets();
 807                 platform_device_unregister(&vrc4171_card_device);
 808                 driver_unregister(&vrc4171_card_driver);
 809                 return retval;
 810         }
 811
 812         printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq);
 813
 814         return 0;
 815 }
 816
 817 static void __devexit vrc4171_card_exit(void)
 818 {
 819         free_irq(vrc4171_irq, vrc4171_sockets);
 820         vrc4171_remove_sockets();
 821         platform_device_unregister(&vrc4171_card_device);
 822         driver_unregister(&vrc4171_card_driver);
 823 }
 824
 825 module_init(vrc4171_card_init);
 826 module_exit(vrc4171_card_exit);