drivers/pcmcia/m32r_cfc.c

   1 /*
   2  *  drivers/pcmcia/m32r_cfc.c
   3  *
   4  *  Device driver for the CFC functionality of M32R.
   5  *
   6  *  Copyright (c) 2001, 2002, 2003, 2004
   7  *    Hiroyuki Kondo, Naoto Sugai, Hayato Fujiwara
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/init.h>
  13 #include <linux/types.h>
  14 #include <linux/fcntl.h>
  15 #include <linux/string.h>
  16 #include <linux/kernel.h>
  17 #include <linux/errno.h>
  18 #include <linux/timer.h>
  19 #include <linux/slab.h>
  20 #include <linux/ioport.h>
  21 #include <linux/delay.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/bitops.h>
  26 #include <asm/irq.h>
  27 #include <asm/io.h>
  28 #include <asm/system.h>
  29
  30 #include <pcmcia/cs_types.h>
  31 #include <pcmcia/ss.h>
  32 #include <pcmcia/cs.h>
  33
  34 #undef MAX_IO_WIN       /* FIXME */
  35 #define MAX_IO_WIN 1
  36 #undef MAX_WIN          /* FIXME */
  37 #define MAX_WIN 1
  38
  39 #include "m32r_cfc.h"
  40
  41 #ifdef CONFIG_PCMCIA_DEBUG
  42 static int m32r_cfc_debug;
  43 module_param(m32r_cfc_debug, int, 0644);
  44 #define debug(lvl, fmt, arg...) do {                            \
  45         if (m32r_cfc_debug > (lvl))                             \
  46                 printk(KERN_DEBUG "m32r_cfc: " fmt , ## arg);   \
  47 } while (0)
  48 #else
  49 #define debug(n, args...) do { } while (0)
  50 #endif
  51
  52 /* Poll status interval -- 0 means default to interrupt */
  53 static int poll_interval = 0;
  54
  55 typedef enum pcc_space { as_none = 0, as_comm, as_attr, as_io } pcc_as_t;
  56
  57 typedef struct pcc_socket {
  58         u_short                 type, flags;
  59         struct pcmcia_socket    socket;
  60         unsigned int            number;
  61         unsigned int            ioaddr;
  62         u_long                  mapaddr;
  63         u_long                  base;   /* PCC register base */
  64         u_char                  cs_irq1, cs_irq2, intr;
  65         pccard_io_map           io_map[MAX_IO_WIN];
  66         pccard_mem_map          mem_map[MAX_WIN];
  67         u_char                  io_win;
  68         u_char                  mem_win;
  69         pcc_as_t                current_space;
  70         u_char                  last_iodbex;
  71 #ifdef CONFIG_PROC_FS
  72         struct proc_dir_entry *proc;
  73 #endif
  74 } pcc_socket_t;
  75
  76 static int pcc_sockets = 0;
  77 static pcc_socket_t socket[M32R_MAX_PCC] = {
  78         { 0, }, /* ... */
  79 };
  80
  81 /*====================================================================*/
  82
  83 static unsigned int pcc_get(u_short, unsigned int);
  84 static void pcc_set(u_short, unsigned int , unsigned int );
  85
  86 static DEFINE_SPINLOCK(pcc_lock);
  87
  88 #if !defined(CONFIG_PLAT_USRV)
  89 static inline u_long pcc_port2addr(unsigned long port, int size) {
  90         u_long addr = 0;
  91         u_long odd;
  92
  93         if (size == 1) {        /* byte access */
  94                 odd = (port&1) << 11;
  95                 port -= port & 1;
  96                 addr = CFC_IO_MAPBASE_BYTE - CFC_IOPORT_BASE + odd + port;
  97         } else if (size == 2)
  98                 addr = CFC_IO_MAPBASE_WORD - CFC_IOPORT_BASE + port;
  99
 100         return addr;
 101 }
 102 #else   /* CONFIG_PLAT_USRV */
 103 static inline u_long pcc_port2addr(unsigned long port, int size) {
 104         u_long odd;
 105         u_long addr = ((port - CFC_IOPORT_BASE) & 0xf000) << 8;
 106
 107         if (size == 1) {        /* byte access */
 108                 odd = port & 1;
 109                 port -= odd;
 110                 odd <<= 11;
 111                 addr = (addr | CFC_IO_MAPBASE_BYTE) + odd + (port & 0xfff);
 112         } else if (size == 2)   /* word access */
 113                 addr = (addr | CFC_IO_MAPBASE_WORD) + (port & 0xfff);
 114
 115         return addr;
 116 }
 117 #endif  /* CONFIG_PLAT_USRV */
 118
 119 void pcc_ioread_byte(int sock, unsigned long port, void *buf, size_t size,
 120         size_t nmemb, int flag)
 121 {
 122         u_long addr;
 123         unsigned char *bp = (unsigned char *)buf;
 124         unsigned long flags;
 125
 126         debug(3, "m32r_cfc: pcc_ioread_byte: sock=%d, port=%#lx, buf=%p, "
 127                  "size=%u, nmemb=%d, flag=%d\n",
 128                   sock, port, buf, size, nmemb, flag);
 129
 130         addr = pcc_port2addr(port, 1);
 131         if (!addr) {
 132                 printk("m32r_cfc:ioread_byte null port :%#lx\n",port);
 133                 return;
 134         }
 135         debug(3, "m32r_cfc: pcc_ioread_byte: addr=%#lx\n", addr);
 136
 137         spin_lock_irqsave(&pcc_lock, flags);
 138         /* read Byte */
 139         while (nmemb--)
 140                 *bp++ = readb(addr);
 141         spin_unlock_irqrestore(&pcc_lock, flags);
 142 }
 143
 144 void pcc_ioread_word(int sock, unsigned long port, void *buf, size_t size,
 145         size_t nmemb, int flag)
 146 {
 147         u_long addr;
 148         unsigned short *bp = (unsigned short *)buf;
 149         unsigned long flags;
 150
 151         debug(3, "m32r_cfc: pcc_ioread_word: sock=%d, port=%#lx, "
 152                  "buf=%p, size=%u, nmemb=%d, flag=%d\n",
 153                  sock, port, buf, size, nmemb, flag);
 154
 155         if (size != 2)
 156                 printk("m32r_cfc: ioread_word :illigal size %u : %#lx\n", size,
 157                         port);
 158         if (size == 9)
 159                 printk("m32r_cfc: ioread_word :insw \n");
 160
 161         addr = pcc_port2addr(port, 2);
 162         if (!addr) {
 163                 printk("m32r_cfc:ioread_word null port :%#lx\n",port);
 164                 return;
 165         }
 166         debug(3, "m32r_cfc: pcc_ioread_word: addr=%#lx\n", addr);
 167
 168         spin_lock_irqsave(&pcc_lock, flags);
 169         /* read Word */
 170         while (nmemb--)
 171                 *bp++ = readw(addr);
 172         spin_unlock_irqrestore(&pcc_lock, flags);
 173 }
 174
 175 void pcc_iowrite_byte(int sock, unsigned long port, void *buf, size_t size,
 176         size_t nmemb, int flag)
 177 {
 178         u_long addr;
 179         unsigned char *bp = (unsigned char *)buf;
 180         unsigned long flags;
 181
 182         debug(3, "m32r_cfc: pcc_iowrite_byte: sock=%d, port=%#lx, "
 183                  "buf=%p, size=%u, nmemb=%d, flag=%d\n",
 184                  sock, port, buf, size, nmemb, flag);
 185
 186         /* write Byte */
 187         addr = pcc_port2addr(port, 1);
 188         if (!addr) {
 189                 printk("m32r_cfc:iowrite_byte null port:%#lx\n",port);
 190                 return;
 191         }
 192         debug(3, "m32r_cfc: pcc_iowrite_byte: addr=%#lx\n", addr);
 193
 194         spin_lock_irqsave(&pcc_lock, flags);
 195         while (nmemb--)
 196                 writeb(*bp++, addr);
 197         spin_unlock_irqrestore(&pcc_lock, flags);
 198 }
 199
 200 void pcc_iowrite_word(int sock, unsigned long port, void *buf, size_t size,
 201         size_t nmemb, int flag)
 202 {
 203         u_long addr;
 204         unsigned short *bp = (unsigned short *)buf;
 205         unsigned long flags;
 206
 207         debug(3, "m32r_cfc: pcc_iowrite_word: sock=%d, port=%#lx, "
 208                  "buf=%p, size=%u, nmemb=%d, flag=%d\n",
 209                  sock, port, buf, size, nmemb, flag);
 210
 211         if(size != 2)
 212                 printk("m32r_cfc: iowrite_word :illigal size %u : %#lx\n",
 213                         size, port);
 214         if(size == 9)
 215                 printk("m32r_cfc: iowrite_word :outsw \n");
 216
 217         addr = pcc_port2addr(port, 2);
 218         if (!addr) {
 219                 printk("m32r_cfc:iowrite_word null addr :%#lx\n",port);
 220                 return;
 221         }
 222 #if 1
 223         if (addr & 1) {
 224                 printk("m32r_cfc:iowrite_word port addr (%#lx):%#lx\n", port,
 225                         addr);
 226                 return;
 227         }
 228 #endif
 229         debug(3, "m32r_cfc: pcc_iowrite_word: addr=%#lx\n", addr);
 230
 231         spin_lock_irqsave(&pcc_lock, flags);
 232         while (nmemb--)
 233                 writew(*bp++, addr);
 234         spin_unlock_irqrestore(&pcc_lock, flags);
 235 }
 236
 237 /*====================================================================*/
 238
 239 #define IS_REGISTERED           0x2000
 240 #define IS_ALIVE                0x8000
 241
 242 typedef struct pcc_t {
 243         char                    *name;
 244         u_short                 flags;
 245 } pcc_t;
 246
 247 static pcc_t pcc[] = {
 248 #if !defined(CONFIG_PLAT_USRV)
 249         { "m32r_cfc", 0 }, { "", 0 },
 250 #else   /* CONFIG_PLAT_USRV */
 251         { "m32r_cfc", 0 }, { "m32r_cfc", 0 }, { "m32r_cfc", 0 },
 252         { "m32r_cfc", 0 }, { "m32r_cfc", 0 }, { "", 0 },
 253 #endif  /* CONFIG_PLAT_USRV */
 254 };
 255
 256 static irqreturn_t pcc_interrupt(int, void *);
 257
 258 /*====================================================================*/
 259
 260 static struct timer_list poll_timer;
 261
 262 static unsigned int pcc_get(u_short sock, unsigned int reg)
 263 {
 264         unsigned int val = inw(reg);
 265         debug(3, "m32r_cfc: pcc_get: reg(0x%08x)=0x%04x\n", reg, val);
 266         return val;
 267 }
 268
 269
 270 static void pcc_set(u_short sock, unsigned int reg, unsigned int data)
 271 {
 272         outw(data, reg);
 273         debug(3, "m32r_cfc: pcc_set: reg(0x%08x)=0x%04x\n", reg, data);
 274 }
 275
 276 /*======================================================================
 277
 278         See if a card is present, powered up, in IO mode, and already
 279         bound to a (non PC Card) Linux driver.  We leave these alone.
 280
 281         We make an exception for cards that seem to be serial devices.
 282
 283 ======================================================================*/
 284
 285 static int __init is_alive(u_short sock)
 286 {
 287         unsigned int stat;
 288
 289         debug(3, "m32r_cfc: is_alive:\n");
 290
 291         printk("CF: ");
 292         stat = pcc_get(sock, (unsigned int)PLD_CFSTS);
 293         if (!stat)
 294                 printk("No ");
 295         printk("Card is detected at socket %d : stat = 0x%08x\n", sock, stat);
 296         debug(3, "m32r_cfc: is_alive: sock stat is 0x%04x\n", stat);
 297
 298         return 0;
 299 }
 300
 301 static void add_pcc_socket(ulong base, int irq, ulong mapaddr,
 302                            unsigned int ioaddr)
 303 {
 304         pcc_socket_t *t = &socket[pcc_sockets];
 305
 306         debug(3, "m32r_cfc: add_pcc_socket: base=%#lx, irq=%d, "
 307                  "mapaddr=%#lx, ioaddr=%08x\n",
 308                  base, irq, mapaddr, ioaddr);
 309
 310         /* add sockets */
 311         t->ioaddr = ioaddr;
 312         t->mapaddr = mapaddr;
 313 #if !defined(CONFIG_PLAT_USRV)
 314         t->base = 0;
 315         t->flags = 0;
 316         t->cs_irq1 = irq;               // insert irq
 317         t->cs_irq2 = irq + 1;           // eject irq
 318 #else   /* CONFIG_PLAT_USRV */
 319         t->base = base;
 320         t->flags = 0;
 321         t->cs_irq1 = 0;                 // insert irq
 322         t->cs_irq2 = 0;                 // eject irq
 323 #endif  /* CONFIG_PLAT_USRV */
 324
 325         if (is_alive(pcc_sockets))
 326                 t->flags |= IS_ALIVE;
 327
 328         /* add pcc */
 329 #if !defined(CONFIG_PLAT_USRV)
 330         request_region((unsigned int)PLD_CFRSTCR, 0x20, "m32r_cfc");
 331 #else   /* CONFIG_PLAT_USRV */
 332         {
 333                 unsigned int reg_base;
 334
 335                 reg_base = (unsigned int)PLD_CFRSTCR;
 336                 reg_base |= pcc_sockets << 8;
 337                 request_region(reg_base, 0x20, "m32r_cfc");
 338         }
 339 #endif  /* CONFIG_PLAT_USRV */
 340         printk(KERN_INFO "  %s ", pcc[pcc_sockets].name);
 341         printk("pcc at 0x%08lx\n", t->base);
 342
 343         /* Update socket interrupt information, capabilities */
 344         t->socket.features |= (SS_CAP_PCCARD | SS_CAP_STATIC_MAP);
 345         t->socket.map_size = M32R_PCC_MAPSIZE;
 346         t->socket.io_offset = ioaddr;   /* use for io access offset */
 347         t->socket.irq_mask = 0;
 348 #if !defined(CONFIG_PLAT_USRV)
 349         t->socket.pci_irq = PLD_IRQ_CFIREQ ;    /* card interrupt */
 350 #else   /* CONFIG_PLAT_USRV */
 351         t->socket.pci_irq = PLD_IRQ_CF0 + pcc_sockets;
 352 #endif  /* CONFIG_PLAT_USRV */
 353
 354 #ifndef CONFIG_PLAT_USRV
 355         /* insert interrupt */
 356         request_irq(irq, pcc_interrupt, 0, "m32r_cfc", pcc_interrupt);
 357 #ifndef CONFIG_PLAT_MAPPI3
 358         /* eject interrupt */
 359         request_irq(irq+1, pcc_interrupt, 0, "m32r_cfc", pcc_interrupt);
 360 #endif
 361         debug(3, "m32r_cfc: enable CFMSK, RDYSEL\n");
 362         pcc_set(pcc_sockets, (unsigned int)PLD_CFIMASK, 0x01);
 363 #endif  /* CONFIG_PLAT_USRV */
 364 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV) || defined(CONFIG_PLAT_OPSPUT)
 365         pcc_set(pcc_sockets, (unsigned int)PLD_CFCR1, 0x0200);
 366 #endif
 367         pcc_sockets++;
 368
 369         return;
 370 }
 371
 372
 373 /*====================================================================*/
 374
 375 static irqreturn_t pcc_interrupt(int irq, void *dev)
 376 {
 377         int i;
 378         u_int events = 0;
 379         int handled = 0;
 380
 381         debug(3, "m32r_cfc: pcc_interrupt: irq=%d, dev=%p\n", irq, dev);
 382         for (i = 0; i < pcc_sockets; i++) {
 383                 if (socket[i].cs_irq1 != irq && socket[i].cs_irq2 != irq)
 384                         continue;
 385
 386                 handled = 1;
 387                 debug(3, "m32r_cfc: pcc_interrupt: socket %d irq 0x%02x ",
 388                         i, irq);
 389                 events |= SS_DETECT;    /* insert or eject */
 390                 if (events)
 391                         pcmcia_parse_events(&socket[i].socket, events);
 392         }
 393         debug(3, "m32r_cfc: pcc_interrupt: done\n");
 394
 395         return IRQ_RETVAL(handled);
 396 } /* pcc_interrupt */
 397
 398 static void pcc_interrupt_wrapper(u_long data)
 399 {
 400         debug(3, "m32r_cfc: pcc_interrupt_wrapper:\n");
 401         pcc_interrupt(0, NULL);
 402         init_timer(&poll_timer);
 403         poll_timer.expires = jiffies + poll_interval;
 404         add_timer(&poll_timer);
 405 }
 406
 407 /*====================================================================*/
 408
 409 static int _pcc_get_status(u_short sock, u_int *value)
 410 {
 411         u_int status;
 412
 413         debug(3, "m32r_cfc: _pcc_get_status:\n");
 414         status = pcc_get(sock, (unsigned int)PLD_CFSTS);
 415         *value = (status) ? SS_DETECT : 0;
 416         debug(3, "m32r_cfc: _pcc_get_status: status=0x%08x\n", status);
 417
 418 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV) || defined(CONFIG_PLAT_OPSPUT)
 419         if ( status ) {
 420                 /* enable CF power */
 421                 status = inw((unsigned int)PLD_CPCR);
 422                 if (!(status & PLD_CPCR_CF)) {
 423                         debug(3, "m32r_cfc: _pcc_get_status: "
 424                                  "power on (CPCR=0x%08x)\n", status);
 425                         status |= PLD_CPCR_CF;
 426                         outw(status, (unsigned int)PLD_CPCR);
 427                         udelay(100);
 428                 }
 429                 *value |= SS_POWERON;
 430
 431                 pcc_set(sock, (unsigned int)PLD_CFBUFCR,0);/* enable buffer */
 432                 udelay(100);
 433
 434                 *value |= SS_READY;             /* always ready */
 435                 *value |= SS_3VCARD;
 436         } else {
 437                 /* disable CF power */
 438                 status = inw((unsigned int)PLD_CPCR);
 439                 status &= ~PLD_CPCR_CF;
 440                 outw(status, (unsigned int)PLD_CPCR);
 441                 udelay(100);
 442                 debug(3, "m32r_cfc: _pcc_get_status: "
 443                          "power off (CPCR=0x%08x)\n", status);
 444         }
 445 #elif defined(CONFIG_PLAT_MAPPI2) || defined(CONFIG_PLAT_MAPPI3)
 446         if ( status ) {
 447                 status = pcc_get(sock, (unsigned int)PLD_CPCR);
 448                 if (status == 0) { /* power off */
 449                         pcc_set(sock, (unsigned int)PLD_CPCR, 1);
 450                         pcc_set(sock, (unsigned int)PLD_CFBUFCR,0); /* force buffer off for ZA-36 */
 451                         udelay(50);
 452                 }
 453                 *value |= SS_POWERON;
 454
 455                 pcc_set(sock, (unsigned int)PLD_CFBUFCR,0);
 456                 udelay(50);
 457                 pcc_set(sock, (unsigned int)PLD_CFRSTCR, 0x0101);
 458                 udelay(25); /* for IDE reset */
 459                 pcc_set(sock, (unsigned int)PLD_CFRSTCR, 0x0100);
 460                 mdelay(2);  /* for IDE reset */
 461
 462                 *value |= SS_READY;
 463                 *value |= SS_3VCARD;
 464         } else {
 465                 /* disable CF power */
 466                 pcc_set(sock, (unsigned int)PLD_CPCR, 0);
 467                 udelay(100);
 468                 debug(3, "m32r_cfc: _pcc_get_status: "
 469                          "power off (CPCR=0x%08x)\n", status);
 470         }
 471 #else
 472 #error no platform configuration
 473 #endif
 474         debug(3, "m32r_cfc: _pcc_get_status: GetStatus(%d) = %#4.4x\n",
 475                  sock, *value);
 476         return 0;
 477 } /* _get_status */
 478
 479 /*====================================================================*/
 480
 481 static int _pcc_set_socket(u_short sock, socket_state_t *state)
 482 {
 483         debug(3, "m32r_cfc: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
 484                   "io_irq %d, csc_mask %#2.2x)\n", sock, state->flags,
 485                   state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
 486
 487 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV) || defined(CONFIG_PLAT_OPSPUT) || defined(CONFIG_PLAT_MAPPI2) || defined(CONFIG_PLAT_MAPPI3)
 488         if (state->Vcc) {
 489                 if ((state->Vcc != 50) && (state->Vcc != 33))
 490                         return -EINVAL;
 491                 /* accept 5V and 3.3V */
 492         }
 493 #endif
 494         if (state->flags & SS_RESET) {
 495                 debug(3, ":RESET\n");
 496                 pcc_set(sock,(unsigned int)PLD_CFRSTCR,0x101);
 497         }else{
 498                 pcc_set(sock,(unsigned int)PLD_CFRSTCR,0x100);
 499         }
 500         if (state->flags & SS_OUTPUT_ENA){
 501                 debug(3, ":OUTPUT_ENA\n");
 502                 /* bit clear */
 503                 pcc_set(sock,(unsigned int)PLD_CFBUFCR,0);
 504         } else {
 505                 pcc_set(sock,(unsigned int)PLD_CFBUFCR,1);
 506         }
 507
 508 #ifdef CONFIG_PCMCIA_DEBUG
 509         if(state->flags & SS_IOCARD){
 510                 debug(3, ":IOCARD");
 511         }
 512         if (state->flags & SS_PWR_AUTO) {
 513                 debug(3, ":PWR_AUTO");
 514         }
 515         if (state->csc_mask & SS_DETECT)
 516                 debug(3, ":csc-SS_DETECT");
 517         if (state->flags & SS_IOCARD) {
 518                 if (state->csc_mask & SS_STSCHG)
 519                         debug(3, ":STSCHG");
 520         } else {
 521                 if (state->csc_mask & SS_BATDEAD)
 522                         debug(3, ":BATDEAD");
 523                 if (state->csc_mask & SS_BATWARN)
 524                         debug(3, ":BATWARN");
 525                 if (state->csc_mask & SS_READY)
 526                         debug(3, ":READY");
 527         }
 528         debug(3, "\n");
 529 #endif
 530         return 0;
 531 } /* _set_socket */
 532
 533 /*====================================================================*/
 534
 535 static int _pcc_set_io_map(u_short sock, struct pccard_io_map *io)
 536 {
 537         u_char map;
 538
 539         debug(3, "m32r_cfc: SetIOMap(%d, %d, %#2.2x, %d ns, "
 540                   "%#llx-%#llx)\n", sock, io->map, io->flags,
 541                   io->speed, (unsigned long long)io->start,
 542                   (unsigned long long)io->stop);
 543         map = io->map;
 544
 545         return 0;
 546 } /* _set_io_map */
 547
 548 /*====================================================================*/
 549
 550 static int _pcc_set_mem_map(u_short sock, struct pccard_mem_map *mem)
 551 {
 552
 553         u_char map = mem->map;
 554         u_long addr;
 555         pcc_socket_t *t = &socket[sock];
 556
 557         debug(3, "m32r_cfc: SetMemMap(%d, %d, %#2.2x, %d ns, "
 558                  "%#llx, %#x)\n", sock, map, mem->flags,
 559                  mem->speed, (unsigned long long)mem->static_start,
 560                  mem->card_start);
 561
 562         /*
 563          * sanity check
 564          */
 565         if ((map > MAX_WIN) || (mem->card_start > 0x3ffffff)){
 566                 return -EINVAL;
 567         }
 568
 569         /*
 570          * de-activate
 571          */
 572         if ((mem->flags & MAP_ACTIVE) == 0) {
 573                 t->current_space = as_none;
 574                 return 0;
 575         }
 576
 577         /*
 578          * Set mode
 579          */
 580         if (mem->flags & MAP_ATTRIB) {
 581                 t->current_space = as_attr;
 582         } else {
 583                 t->current_space = as_comm;
 584         }
 585
 586         /*
 587          * Set address
 588          */
 589         addr = t->mapaddr + (mem->card_start & M32R_PCC_MAPMASK);
 590         mem->static_start = addr + mem->card_start;
 591
 592         return 0;
 593
 594 } /* _set_mem_map */
 595
 596 #if 0 /* driver model ordering issue */
 597 /*======================================================================
 598
 599         Routines for accessing socket information and register dumps via
 600         /proc/bus/pccard/...
 601
 602 ======================================================================*/
 603
 604 static ssize_t show_info(struct class_device *class_dev, char *buf)
 605 {
 606         pcc_socket_t *s = container_of(class_dev, struct pcc_socket,
 607                 socket.dev);
 608
 609         return sprintf(buf, "type:     %s\nbase addr:    0x%08lx\n",
 610                 pcc[s->type].name, s->base);
 611 }
 612
 613 static ssize_t show_exca(struct class_device *class_dev, char *buf)
 614 {
 615         /* FIXME */
 616
 617         return 0;
 618 }
 619
 620 static CLASS_DEVICE_ATTR(info, S_IRUGO, show_info, NULL);
 621 static CLASS_DEVICE_ATTR(exca, S_IRUGO, show_exca, NULL);
 622 #endif
 623
 624 /*====================================================================*/
 625
 626 /* this is horribly ugly... proper locking needs to be done here at
 627  * some time... */
 628 #define LOCKED(x) do {                                  \
 629         int retval;                                     \
 630         unsigned long flags;                            \
 631         spin_lock_irqsave(&pcc_lock, flags);            \
 632         retval = x;                                     \
 633         spin_unlock_irqrestore(&pcc_lock, flags);       \
 634         return retval;                                  \
 635 } while (0)
 636
 637
 638 static int pcc_get_status(struct pcmcia_socket *s, u_int *value)
 639 {
 640         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 641
 642         if (socket[sock].flags & IS_ALIVE) {
 643                 debug(3, "m32r_cfc: pcc_get_status: sock(%d) -EINVAL\n", sock);
 644                 *value = 0;
 645                 return -EINVAL;
 646         }
 647         debug(3, "m32r_cfc: pcc_get_status: sock(%d)\n", sock);
 648         LOCKED(_pcc_get_status(sock, value));
 649 }
 650
 651 static int pcc_set_socket(struct pcmcia_socket *s, socket_state_t *state)
 652 {
 653         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 654
 655         if (socket[sock].flags & IS_ALIVE) {
 656                 debug(3, "m32r_cfc: pcc_set_socket: sock(%d) -EINVAL\n", sock);
 657                 return -EINVAL;
 658         }
 659         debug(3, "m32r_cfc: pcc_set_socket: sock(%d)\n", sock);
 660         LOCKED(_pcc_set_socket(sock, state));
 661 }
 662
 663 static int pcc_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 664 {
 665         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 666
 667         if (socket[sock].flags & IS_ALIVE) {
 668                 debug(3, "m32r_cfc: pcc_set_io_map: sock(%d) -EINVAL\n", sock);
 669                 return -EINVAL;
 670         }
 671         debug(3, "m32r_cfc: pcc_set_io_map: sock(%d)\n", sock);
 672         LOCKED(_pcc_set_io_map(sock, io));
 673 }
 674
 675 static int pcc_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem)
 676 {
 677         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 678
 679         if (socket[sock].flags & IS_ALIVE) {
 680                 debug(3, "m32r_cfc: pcc_set_mem_map: sock(%d) -EINVAL\n", sock);
 681                 return -EINVAL;
 682         }
 683         debug(3, "m32r_cfc: pcc_set_mem_map: sock(%d)\n", sock);
 684         LOCKED(_pcc_set_mem_map(sock, mem));
 685 }
 686
 687 static int pcc_init(struct pcmcia_socket *s)
 688 {
 689         debug(3, "m32r_cfc: pcc_init()\n");
 690         return 0;
 691 }
 692
 693 static struct pccard_operations pcc_operations = {
 694         .init                   = pcc_init,
 695         .get_status             = pcc_get_status,
 696         .set_socket             = pcc_set_socket,
 697         .set_io_map             = pcc_set_io_map,
 698         .set_mem_map            = pcc_set_mem_map,
 699 };
 700
 701 static int cfc_drv_pcmcia_suspend(struct platform_device *dev,
 702                                      pm_message_t state)
 703 {
 704         return pcmcia_socket_dev_suspend(&dev->dev);
 705 }
 706
 707 static int cfc_drv_pcmcia_resume(struct platform_device *dev)
 708 {
 709         return pcmcia_socket_dev_resume(&dev->dev);
 710 }
 711 /*====================================================================*/
 712
 713 static struct platform_driver pcc_driver = {
 714         .driver = {
 715                 .name           = "cfc",
 716                 .owner          = THIS_MODULE,
 717         },
 718         .suspend        = cfc_drv_pcmcia_suspend,
 719         .resume         = cfc_drv_pcmcia_resume,
 720 };
 721
 722 static struct platform_device pcc_device = {
 723         .name = "cfc",
 724         .id = 0,
 725 };
 726
 727 /*====================================================================*/
 728
 729 static int __init init_m32r_pcc(void)
 730 {
 731         int i, ret;
 732
 733         ret = platform_driver_register(&pcc_driver);
 734         if (ret)
 735                 return ret;
 736
 737         ret = platform_device_register(&pcc_device);
 738         if (ret){
 739                 platform_driver_unregister(&pcc_driver);
 740                 return ret;
 741         }
 742
 743 #if defined(CONFIG_PLAT_MAPPI2) || defined(CONFIG_PLAT_MAPPI3)
 744         pcc_set(0, (unsigned int)PLD_CFCR0, 0x0f0f);
 745         pcc_set(0, (unsigned int)PLD_CFCR1, 0x0200);
 746 #endif
 747
 748         pcc_sockets = 0;
 749
 750 #if !defined(CONFIG_PLAT_USRV)
 751         add_pcc_socket(M32R_PCC0_BASE, PLD_IRQ_CFC_INSERT, CFC_ATTR_MAPBASE,
 752                        CFC_IOPORT_BASE);
 753 #else   /* CONFIG_PLAT_USRV */
 754         {
 755                 ulong base, mapaddr;
 756                 unsigned int ioaddr;
 757
 758                 for (i = 0 ; i < M32R_MAX_PCC ; i++) {
 759                         base = (ulong)PLD_CFRSTCR;
 760                         base = base | (i << 8);
 761                         ioaddr = (i + 1) << 12;
 762                         mapaddr = CFC_ATTR_MAPBASE | (i << 20);
 763                         add_pcc_socket(base, 0, mapaddr, ioaddr);
 764                 }
 765         }
 766 #endif  /* CONFIG_PLAT_USRV */
 767
 768         if (pcc_sockets == 0) {
 769                 printk("socket is not found.\n");
 770                 platform_device_unregister(&pcc_device);
 771                 platform_driver_unregister(&pcc_driver);
 772                 return -ENODEV;
 773         }
 774
 775         /* Set up interrupt handler(s) */
 776
 777         for (i = 0 ; i < pcc_sockets ; i++) {
 778                 socket[i].socket.dev.parent = &pcc_device.dev;
 779                 socket[i].socket.ops = &pcc_operations;
 780                 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 781                 socket[i].socket.owner = THIS_MODULE;
 782                 socket[i].number = i;
 783                 ret = pcmcia_register_socket(&socket[i].socket);
 784                 if (!ret)
 785                         socket[i].flags |= IS_REGISTERED;
 786
 787 #if 0   /* driver model ordering issue */
 788                 class_device_create_file(&socket[i].socket.dev,
 789                                          &class_device_attr_info);
 790                 class_device_create_file(&socket[i].socket.dev,
 791                                          &class_device_attr_exca);
 792 #endif
 793         }
 794
 795         /* Finally, schedule a polling interrupt */
 796         if (poll_interval != 0) {
 797                 poll_timer.function = pcc_interrupt_wrapper;
 798                 poll_timer.data = 0;
 799                 init_timer(&poll_timer);
 800                 poll_timer.expires = jiffies + poll_interval;
 801                 add_timer(&poll_timer);
 802         }
 803
 804         return 0;
 805 } /* init_m32r_pcc */
 806
 807 static void __exit exit_m32r_pcc(void)
 808 {
 809         int i;
 810
 811         for (i = 0; i < pcc_sockets; i++)
 812                 if (socket[i].flags & IS_REGISTERED)
 813                         pcmcia_unregister_socket(&socket[i].socket);
 814
 815         platform_device_unregister(&pcc_device);
 816         if (poll_interval != 0)
 817                 del_timer_sync(&poll_timer);
 818
 819         platform_driver_unregister(&pcc_driver);
 820 } /* exit_m32r_pcc */
 821
 822 module_init(init_m32r_pcc);
 823 module_exit(exit_m32r_pcc);
 824 MODULE_LICENSE("Dual MPL/GPL");
 825 /*====================================================================*/