drivers/pcmcia/tcic.c

   1 /*======================================================================
   2
   3     Device driver for Databook TCIC-2 PCMCIA controller
   4
   5     tcic.c 1.111 2000/02/15 04:13:12
   6
   7     The contents of this file are subject to the Mozilla Public
   8     License Version 1.1 (the "License"); you may not use this file
   9     except in compliance with the License. You may obtain a copy of
  10     the License at http://www.mozilla.org/MPL/
  11
  12     Software distributed under the License is distributed on an "AS
  13     IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14     implied. See the License for the specific language governing
  15     rights and limitations under the License.
  16
  17     The initial developer of the original code is David A. Hinds
  18     <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19     are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20
  21     Alternatively, the contents of this file may be used under the
  22     terms of the GNU General Public License version 2 (the "GPL"), in which
  23     case the provisions of the GPL are applicable instead of the
  24     above.  If you wish to allow the use of your version of this file
  25     only under the terms of the GPL and not to allow others to use
  26     your version of this file under the MPL, indicate your decision
  27     by deleting the provisions above and replace them with the notice
  28     and other provisions required by the GPL.  If you do not delete
  29     the provisions above, a recipient may use your version of this
  30     file under either the MPL or the GPL.
  31
  32 ======================================================================*/
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/init.h>
  37 #include <linux/types.h>
  38 #include <linux/fcntl.h>
  39 #include <linux/string.h>
  40 #include <linux/errno.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/slab.h>
  43 #include <linux/timer.h>
  44 #include <linux/ioport.h>
  45 #include <linux/delay.h>
  46 #include <linux/workqueue.h>
  47 #include <linux/device.h>
  48
  49 #include <asm/io.h>
  50 #include <asm/bitops.h>
  51 #include <asm/system.h>
  52
  53 #include <pcmcia/version.h>
  54 #include <pcmcia/cs_types.h>
  55 #include <pcmcia/cs.h>
  56 #include <pcmcia/ss.h>
  57 #include "tcic.h"
  58
  59 #ifdef DEBUG
  60 static int pc_debug;
  61
  62 module_param(pc_debug, int, 0644);
  63 static const char version[] =
  64 "tcic.c 1.111 2000/02/15 04:13:12 (David Hinds)";
  65
  66 #define debug(lvl, fmt, arg...) do {                            \
  67         if (pc_debug > (lvl))                                   \
  68                 printk(KERN_DEBUG "tcic: " fmt , ## arg);       \
  69 } while (0)
  70 #else
  71 #define debug(lvl, fmt, arg...) do { } while (0)
  72 #endif
  73
  74 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
  75 MODULE_DESCRIPTION("Databook TCIC-2 PCMCIA socket driver");
  76 MODULE_LICENSE("Dual MPL/GPL");
  77
  78 /*====================================================================*/
  79
  80 /* Parameters that can be set with 'insmod' */
  81
  82 /* The base port address of the TCIC-2 chip */
  83 static int tcic_base = TCIC_BASE;
  84
  85 /* Specify a socket number to ignore */
  86 static int ignore = -1;
  87
  88 /* Probe for safe interrupts? */
  89 static int do_scan = 1;
  90
  91 /* Bit map of interrupts to choose from */
  92 static u_int irq_mask = 0xffff;
  93 static int irq_list[16];
  94 static int irq_list_count;
  95
  96 /* The card status change interrupt -- 0 means autoselect */
  97 static int cs_irq;
  98
  99 /* Poll status interval -- 0 means default to interrupt */
 100 static int poll_interval;
 101
 102 /* Delay for card status double-checking */
 103 static int poll_quick = HZ/20;
 104
 105 /* CCLK external clock time, in nanoseconds.  70 ns = 14.31818 MHz */
 106 static int cycle_time = 70;
 107
 108 module_param(tcic_base, int, 0444);
 109 module_param(ignore, int, 0444);
 110 module_param(do_scan, int, 0444);
 111 module_param(irq_mask, int, 0444);
 112 module_param_array(irq_list, int, irq_list_count, 0444);
 113 module_param(cs_irq, int, 0444);
 114 module_param(poll_interval, int, 0444);
 115 module_param(poll_quick, int, 0444);
 116 module_param(cycle_time, int, 0444);
 117
 118 /*====================================================================*/
 119
 120 static irqreturn_t tcic_interrupt(int irq, void *dev, struct pt_regs *regs);
 121 static void tcic_timer(u_long data);
 122 static struct pccard_operations tcic_operations;
 123
 124 struct tcic_socket {
 125     u_short     psock;
 126     u_char      last_sstat;
 127     u_char      id;
 128     struct pcmcia_socket        socket;
 129 };
 130
 131 static struct timer_list poll_timer;
 132 static int tcic_timer_pending;
 133
 134 static int sockets;
 135 static struct tcic_socket socket_table[2];
 136
 137 /*====================================================================*/
 138
 139 /* Trick when selecting interrupts: the TCIC sktirq pin is supposed
 140    to map to irq 11, but is coded as 0 or 1 in the irq registers. */
 141 #define TCIC_IRQ(x) ((x) ? (((x) == 11) ? 1 : (x)) : 15)
 142
 143 #ifdef DEBUG_X
 144 static u_char tcic_getb(u_char reg)
 145 {
 146     u_char val = inb(tcic_base+reg);
 147     printk(KERN_DEBUG "tcic_getb(%#x) = %#x\n", tcic_base+reg, val);
 148     return val;
 149 }
 150
 151 static u_short tcic_getw(u_char reg)
 152 {
 153     u_short val = inw(tcic_base+reg);
 154     printk(KERN_DEBUG "tcic_getw(%#x) = %#x\n", tcic_base+reg, val);
 155     return val;
 156 }
 157
 158 static void tcic_setb(u_char reg, u_char data)
 159 {
 160     printk(KERN_DEBUG "tcic_setb(%#x, %#x)\n", tcic_base+reg, data);
 161     outb(data, tcic_base+reg);
 162 }
 163
 164 static void tcic_setw(u_char reg, u_short data)
 165 {
 166     printk(KERN_DEBUG "tcic_setw(%#x, %#x)\n", tcic_base+reg, data);
 167     outw(data, tcic_base+reg);
 168 }
 169 #else
 170 #define tcic_getb(reg) inb(tcic_base+reg)
 171 #define tcic_getw(reg) inw(tcic_base+reg)
 172 #define tcic_setb(reg, data) outb(data, tcic_base+reg)
 173 #define tcic_setw(reg, data) outw(data, tcic_base+reg)
 174 #endif
 175
 176 static void tcic_setl(u_char reg, u_int data)
 177 {
 178 #ifdef DEBUG_X
 179     printk(KERN_DEBUG "tcic_setl(%#x, %#lx)\n", tcic_base+reg, data);
 180 #endif
 181     outw(data & 0xffff, tcic_base+reg);
 182     outw(data >> 16, tcic_base+reg+2);
 183 }
 184
 185 static u_char tcic_aux_getb(u_short reg)
 186 {
 187     u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
 188     tcic_setb(TCIC_MODE, mode);
 189     return tcic_getb(TCIC_AUX);
 190 }
 191
 192 static void tcic_aux_setb(u_short reg, u_char data)
 193 {
 194     u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
 195     tcic_setb(TCIC_MODE, mode);
 196     tcic_setb(TCIC_AUX, data);
 197 }
 198
 199 static u_short tcic_aux_getw(u_short reg)
 200 {
 201     u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
 202     tcic_setb(TCIC_MODE, mode);
 203     return tcic_getw(TCIC_AUX);
 204 }
 205
 206 static void tcic_aux_setw(u_short reg, u_short data)
 207 {
 208     u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
 209     tcic_setb(TCIC_MODE, mode);
 210     tcic_setw(TCIC_AUX, data);
 211 }
 212
 213 /*====================================================================*/
 214
 215 /* Time conversion functions */
 216
 217 static int to_cycles(int ns)
 218 {
 219     if (ns < 14)
 220         return 0;
 221     else
 222         return 2*(ns-14)/cycle_time;
 223 }
 224
 225 /*====================================================================*/
 226
 227 static volatile u_int irq_hits;
 228
 229 static irqreturn_t __init tcic_irq_count(int irq, void *dev, struct pt_regs *regs)
 230 {
 231     irq_hits++;
 232     return IRQ_HANDLED;
 233 }
 234
 235 static u_int __init try_irq(int irq)
 236 {
 237     u_short cfg;
 238
 239     irq_hits = 0;
 240     if (request_irq(irq, tcic_irq_count, 0, "irq scan", tcic_irq_count) != 0)
 241         return -1;
 242     mdelay(10);
 243     if (irq_hits) {
 244         free_irq(irq, tcic_irq_count);
 245         return -1;
 246     }
 247
 248     /* Generate one interrupt */
 249     cfg = TCIC_SYSCFG_AUTOBUSY | 0x0a00;
 250     tcic_aux_setw(TCIC_AUX_SYSCFG, cfg | TCIC_IRQ(irq));
 251     tcic_setb(TCIC_IENA, TCIC_IENA_ERR | TCIC_IENA_CFG_HIGH);
 252     tcic_setb(TCIC_ICSR, TCIC_ICSR_ERR | TCIC_ICSR_JAM);
 253
 254     udelay(1000);
 255     free_irq(irq, tcic_irq_count);
 256
 257     /* Turn off interrupts */
 258     tcic_setb(TCIC_IENA, TCIC_IENA_CFG_OFF);
 259     while (tcic_getb(TCIC_ICSR))
 260         tcic_setb(TCIC_ICSR, TCIC_ICSR_JAM);
 261     tcic_aux_setw(TCIC_AUX_SYSCFG, cfg);
 262
 263     return (irq_hits != 1);
 264 }
 265
 266 static u_int __init irq_scan(u_int mask0)
 267 {
 268     u_int mask1;
 269     int i;
 270
 271 #ifdef __alpha__
 272 #define PIC 0x4d0
 273     /* Don't probe level-triggered interrupts -- reserved for PCI */
 274     int level_mask = inb_p(PIC) | (inb_p(PIC+1) << 8);
 275     if (level_mask)
 276         mask0 &= ~level_mask;
 277 #endif
 278
 279     mask1 = 0;
 280     if (do_scan) {
 281         for (i = 0; i < 16; i++)
 282             if ((mask0 & (1 << i)) && (try_irq(i) == 0))
 283                 mask1 |= (1 << i);
 284         for (i = 0; i < 16; i++)
 285             if ((mask1 & (1 << i)) && (try_irq(i) != 0)) {
 286                 mask1 ^= (1 << i);
 287             }
 288     }
 289
 290     if (mask1) {
 291         printk("scanned");
 292     } else {
 293         /* Fallback: just find interrupts that aren't in use */
 294         for (i = 0; i < 16; i++)
 295             if ((mask0 & (1 << i)) &&
 296                 (request_irq(i, tcic_irq_count, 0, "x", tcic_irq_count) == 0)) {
 297                 mask1 |= (1 << i);
 298                 free_irq(i, tcic_irq_count);
 299             }
 300         printk("default");
 301     }
 302
 303     printk(") = ");
 304     for (i = 0; i < 16; i++)
 305         if (mask1 & (1<<i))
 306             printk("%s%d", ((mask1 & ((1<<i)-1)) ? "," : ""), i);
 307     printk(" ");
 308
 309     return mask1;
 310 }
 311
 312 /*======================================================================
 313
 314     See if a card is present, powered up, in IO mode, and already
 315     bound to a (non-PCMCIA) Linux driver.
 316
 317     We make an exception for cards that look like serial devices.
 318
 319 ======================================================================*/
 320
 321 static int __init is_active(int s)
 322 {
 323     u_short scf1, ioctl, base, num;
 324     u_char pwr, sstat;
 325     u_int addr;
 326
 327     tcic_setl(TCIC_ADDR, (s << TCIC_ADDR_SS_SHFT)
 328               | TCIC_ADDR_INDREG | TCIC_SCF1(s));
 329     scf1 = tcic_getw(TCIC_DATA);
 330     pwr = tcic_getb(TCIC_PWR);
 331     sstat = tcic_getb(TCIC_SSTAT);
 332     addr = TCIC_IWIN(s, 0);
 333     tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X);
 334     base = tcic_getw(TCIC_DATA);
 335     tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X);
 336     ioctl = tcic_getw(TCIC_DATA);
 337
 338     if (ioctl & TCIC_ICTL_TINY)
 339         num = 1;
 340     else {
 341         num = (base ^ (base-1));
 342         base = base & (base-1);
 343     }
 344
 345     if ((sstat & TCIC_SSTAT_CD) && (pwr & TCIC_PWR_VCC(s)) &&
 346         (scf1 & TCIC_SCF1_IOSTS) && (ioctl & TCIC_ICTL_ENA) &&
 347         (check_region(base, num) != 0) && ((base & 0xfeef) != 0x02e8))
 348         return 1;
 349     else
 350         return 0;
 351 }
 352
 353 /*======================================================================
 354
 355     This returns the revision code for the specified socket.
 356
 357 ======================================================================*/
 358
 359 static int __init get_tcic_id(void)
 360 {
 361     u_short id;
 362
 363     tcic_aux_setw(TCIC_AUX_TEST, TCIC_TEST_DIAG);
 364     id = tcic_aux_getw(TCIC_AUX_ILOCK);
 365     id = (id & TCIC_ILOCKTEST_ID_MASK) >> TCIC_ILOCKTEST_ID_SH;
 366     tcic_aux_setw(TCIC_AUX_TEST, 0);
 367     return id;
 368 }
 369
 370 /*====================================================================*/
 371
 372 static int tcic_drv_suspend(struct device *dev, u32 state, u32 level)
 373 {
 374         int ret = 0;
 375         if (level == SUSPEND_SAVE_STATE)
 376                 ret = pcmcia_socket_dev_suspend(dev, state);
 377         return ret;
 378 }
 379
 380 static int tcic_drv_resume(struct device *dev, u32 level)
 381 {
 382         int ret = 0;
 383         if (level == RESUME_RESTORE_STATE)
 384                 ret = pcmcia_socket_dev_resume(dev);
 385         return ret;
 386 }
 387
 388 static struct device_driver tcic_driver = {
 389         .name = "tcic-pcmcia",
 390         .bus = &platform_bus_type,
 391         .suspend = tcic_drv_suspend,
 392         .resume = tcic_drv_resume,
 393 };
 394
 395 static struct platform_device tcic_device = {
 396         .name = "tcic-pcmcia",
 397         .id = 0,
 398 };
 399
 400
 401 static int __init init_tcic(void)
 402 {
 403     int i, sock, ret = 0;
 404     u_int mask, scan;
 405
 406     if (driver_register(&tcic_driver))
 407         return -1;
 408
 409     printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: ");
 410     sock = 0;
 411
 412     if (!request_region(tcic_base, 16, "tcic-2")) {
 413         printk("could not allocate ports,\n ");
 414         driver_unregister(&tcic_driver);
 415         return -ENODEV;
 416     }
 417     else {
 418         tcic_setw(TCIC_ADDR, 0);
 419         if (tcic_getw(TCIC_ADDR) == 0) {
 420             tcic_setw(TCIC_ADDR, 0xc3a5);
 421             if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2;
 422         }
 423         if (sock == 0) {
 424             /* See if resetting the controller does any good */
 425             tcic_setb(TCIC_SCTRL, TCIC_SCTRL_RESET);
 426             tcic_setb(TCIC_SCTRL, 0);
 427             tcic_setw(TCIC_ADDR, 0);
 428             if (tcic_getw(TCIC_ADDR) == 0) {
 429                 tcic_setw(TCIC_ADDR, 0xc3a5);
 430                 if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2;
 431             }
 432         }
 433     }
 434     if (sock == 0) {
 435         printk("not found.\n");
 436         release_region(tcic_base, 16);
 437         driver_unregister(&tcic_driver);
 438         return -ENODEV;
 439     }
 440
 441     sockets = 0;
 442     for (i = 0; i < sock; i++) {
 443         if ((i == ignore) || is_active(i)) continue;
 444         socket_table[sockets].psock = i;
 445         socket_table[sockets].id = get_tcic_id();
 446
 447         socket_table[sockets].socket.owner = THIS_MODULE;
 448         /* only 16-bit cards, memory windows must be size-aligned */
 449         /* No PCI or CardBus support */
 450         socket_table[sockets].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN;
 451         /* irq 14, 11, 10, 7, 6, 5, 4, 3 */
 452         socket_table[sockets].socket.irq_mask = 0x4cf8;
 453         /* 4K minimum window size */
 454         socket_table[sockets].socket.map_size = 0x1000;
 455         sockets++;
 456     }
 457
 458     switch (socket_table[0].id) {
 459     case TCIC_ID_DB86082:
 460         printk("DB86082"); break;
 461     case TCIC_ID_DB86082A:
 462         printk("DB86082A"); break;
 463     case TCIC_ID_DB86084:
 464         printk("DB86084"); break;
 465     case TCIC_ID_DB86084A:
 466         printk("DB86084A"); break;
 467     case TCIC_ID_DB86072:
 468         printk("DB86072"); break;
 469     case TCIC_ID_DB86184:
 470         printk("DB86184"); break;
 471     case TCIC_ID_DB86082B:
 472         printk("DB86082B"); break;
 473     default:
 474         printk("Unknown ID 0x%02x", socket_table[0].id);
 475     }
 476
 477     /* Set up polling */
 478     poll_timer.function = &tcic_timer;
 479     poll_timer.data = 0;
 480     init_timer(&poll_timer);
 481
 482     /* Build interrupt mask */
 483     printk(", %d sockets\n" KERN_INFO "  irq list (", sockets);
 484     if (irq_list_count == 0)
 485         mask = irq_mask;
 486     else
 487         for (i = mask = 0; i < irq_list_count; i++)
 488             mask |= (1<<irq_list[i]);
 489
 490     /* irq 14, 11, 10, 7, 6, 5, 4, 3 */
 491     mask &= 0x4cf8;
 492     /* Scan interrupts */
 493     mask = irq_scan(mask);
 494     for (i=0;i<sockets;i++)
 495             socket_table[i].socket.irq_mask = mask;
 496
 497     /* Check for only two interrupts available */
 498     scan = (mask & (mask-1));
 499     if (((scan & (scan-1)) == 0) && (poll_interval == 0))
 500         poll_interval = HZ;
 501
 502     if (poll_interval == 0) {
 503         /* Avoid irq 12 unless it is explicitly requested */
 504         u_int cs_mask = mask & ((cs_irq) ? (1<<cs_irq) : ~(1<<12));
 505         for (i = 15; i > 0; i--)
 506             if ((cs_mask & (1 << i)) &&
 507                 (request_irq(i, tcic_interrupt, 0, "tcic",
 508                              tcic_interrupt) == 0))
 509                 break;
 510         cs_irq = i;
 511         if (cs_irq == 0) poll_interval = HZ;
 512     }
 513
 514     if (socket_table[0].socket.irq_mask & (1 << 11))
 515         printk("sktirq is irq 11, ");
 516     if (cs_irq != 0)
 517         printk("status change on irq %d\n", cs_irq);
 518     else
 519         printk("polled status, interval = %d ms\n",
 520                poll_interval * 1000 / HZ);
 521
 522     for (i = 0; i < sockets; i++) {
 523         tcic_setw(TCIC_ADDR+2, socket_table[i].psock << TCIC_SS_SHFT);
 524         socket_table[i].last_sstat = tcic_getb(TCIC_SSTAT);
 525     }
 526
 527     /* jump start interrupt handler, if needed */
 528     tcic_interrupt(0, NULL, NULL);
 529
 530     platform_device_register(&tcic_device);
 531
 532     for (i = 0; i < sockets; i++) {
 533             socket_table[i].socket.ops = &tcic_operations;
 534             socket_table[i].socket.dev.dev = &tcic_device.dev;
 535             ret = pcmcia_register_socket(&socket_table[i].socket);
 536             if (ret && i)
 537                     pcmcia_unregister_socket(&socket_table[0].socket);
 538     }
 539
 540     return ret;
 541
 542     return 0;
 543
 544 } /* init_tcic */
 545
 546 /*====================================================================*/
 547
 548 static void __exit exit_tcic(void)
 549 {
 550     int i;
 551
 552     del_timer_sync(&poll_timer);
 553     if (cs_irq != 0) {
 554         tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00);
 555         free_irq(cs_irq, tcic_interrupt);
 556     }
 557     release_region(tcic_base, 16);
 558
 559     for (i = 0; i < sockets; i++) {
 560             pcmcia_unregister_socket(&socket_table[i].socket);
 561     }
 562
 563     platform_device_unregister(&tcic_device);
 564     driver_unregister(&tcic_driver);
 565 } /* exit_tcic */
 566
 567 /*====================================================================*/
 568
 569 static irqreturn_t tcic_interrupt(int irq, void *dev, struct pt_regs *regs)
 570 {
 571     int i, quick = 0;
 572     u_char latch, sstat;
 573     u_short psock;
 574     u_int events;
 575     static volatile int active = 0;
 576
 577     if (active) {
 578         printk(KERN_NOTICE "tcic: reentered interrupt handler!\n");
 579         return IRQ_NONE;
 580     } else
 581         active = 1;
 582
 583     debug(2, "tcic_interrupt()\n");
 584
 585     for (i = 0; i < sockets; i++) {
 586         psock = socket_table[i].psock;
 587         tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
 588                   | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
 589         sstat = tcic_getb(TCIC_SSTAT);
 590         latch = sstat ^ socket_table[psock].last_sstat;
 591         socket_table[i].last_sstat = sstat;
 592         if (tcic_getb(TCIC_ICSR) & TCIC_ICSR_CDCHG) {
 593             tcic_setb(TCIC_ICSR, TCIC_ICSR_CLEAR);
 594             quick = 1;
 595         }
 596         if (latch == 0)
 597             continue;
 598         events = (latch & TCIC_SSTAT_CD) ? SS_DETECT : 0;
 599         events |= (latch & TCIC_SSTAT_WP) ? SS_WRPROT : 0;
 600         if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) {
 601             events |= (latch & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0;
 602         } else {
 603             events |= (latch & TCIC_SSTAT_RDY) ? SS_READY : 0;
 604             events |= (latch & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0;
 605             events |= (latch & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0;
 606         }
 607         if (events) {
 608                 pcmcia_parse_events(&socket_table[i].socket, events);
 609         }
 610     }
 611
 612     /* Schedule next poll, if needed */
 613     if (((cs_irq == 0) || quick) && (!tcic_timer_pending)) {
 614         poll_timer.expires = jiffies + (quick ? poll_quick : poll_interval);
 615         add_timer(&poll_timer);
 616         tcic_timer_pending = 1;
 617     }
 618     active = 0;
 619
 620     debug(2, "interrupt done\n");
 621     return IRQ_HANDLED;
 622 } /* tcic_interrupt */
 623
 624 static void tcic_timer(u_long data)
 625 {
 626     debug(2, "tcic_timer()\n");
 627     tcic_timer_pending = 0;
 628     tcic_interrupt(0, NULL, NULL);
 629 } /* tcic_timer */
 630
 631 /*====================================================================*/
 632
 633 static int tcic_get_status(struct pcmcia_socket *sock, u_int *value)
 634 {
 635     u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
 636     u_char reg;
 637
 638     tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
 639               | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
 640     reg = tcic_getb(TCIC_SSTAT);
 641     *value  = (reg & TCIC_SSTAT_CD) ? SS_DETECT : 0;
 642     *value |= (reg & TCIC_SSTAT_WP) ? SS_WRPROT : 0;
 643     if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) {
 644         *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0;
 645     } else {
 646         *value |= (reg & TCIC_SSTAT_RDY) ? SS_READY : 0;
 647         *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0;
 648         *value |= (reg & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0;
 649     }
 650     reg = tcic_getb(TCIC_PWR);
 651     if (reg & (TCIC_PWR_VCC(psock)|TCIC_PWR_VPP(psock)))
 652         *value |= SS_POWERON;
 653     debug(1, "GetStatus(%d) = %#2.2x\n", psock, *value);
 654     return 0;
 655 } /* tcic_get_status */
 656
 657 /*====================================================================*/
 658
 659 static int tcic_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 660 {
 661     u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
 662     u_char reg;
 663     u_short scf1, scf2;
 664
 665     tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
 666               | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
 667     scf1 = tcic_getw(TCIC_DATA);
 668     state->flags = (scf1 & TCIC_SCF1_IOSTS) ? SS_IOCARD : 0;
 669     state->flags |= (scf1 & TCIC_SCF1_DMA_MASK) ? SS_DMA_MODE : 0;
 670     state->flags |= (scf1 & TCIC_SCF1_SPKR) ? SS_SPKR_ENA : 0;
 671     if (tcic_getb(TCIC_SCTRL) & TCIC_SCTRL_ENA)
 672         state->flags |= SS_OUTPUT_ENA;
 673     state->io_irq = scf1 & TCIC_SCF1_IRQ_MASK;
 674     if (state->io_irq == 1) state->io_irq = 11;
 675
 676     reg = tcic_getb(TCIC_PWR);
 677     state->Vcc = state->Vpp = 0;
 678     if (reg & TCIC_PWR_VCC(psock)) {
 679         if (reg & TCIC_PWR_VPP(psock))
 680             state->Vcc = 50;
 681         else
 682             state->Vcc = state->Vpp = 50;
 683     } else {
 684         if (reg & TCIC_PWR_VPP(psock)) {
 685             state->Vcc = 50;
 686             state->Vpp = 120;
 687         }
 688     }
 689     reg = tcic_aux_getb(TCIC_AUX_ILOCK);
 690     state->flags |= (reg & TCIC_ILOCK_CRESET) ? SS_RESET : 0;
 691
 692     /* Card status change interrupt mask */
 693     tcic_setw(TCIC_ADDR, TCIC_SCF2(psock));
 694     scf2 = tcic_getw(TCIC_DATA);
 695     state->csc_mask = (scf2 & TCIC_SCF2_MCD) ? 0 : SS_DETECT;
 696     if (state->flags & SS_IOCARD) {
 697         state->csc_mask |= (scf2 & TCIC_SCF2_MLBAT1) ? 0 : SS_STSCHG;
 698     } else {
 699         state->csc_mask |= (scf2 & TCIC_SCF2_MLBAT1) ? 0 : SS_BATDEAD;
 700         state->csc_mask |= (scf2 & TCIC_SCF2_MLBAT2) ? 0 : SS_BATWARN;
 701         state->csc_mask |= (scf2 & TCIC_SCF2_MRDY) ? 0 : SS_READY;
 702     }
 703
 704     debug(1, "GetSocket(%d) = flags %#3.3x, Vcc %d, Vpp %d, "
 705           "io_irq %d, csc_mask %#2.2x\n", psock, state->flags,
 706           state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
 707     return 0;
 708 } /* tcic_get_socket */
 709
 710 /*====================================================================*/
 711
 712 static int tcic_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 713 {
 714     u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
 715     u_char reg;
 716     u_short scf1, scf2;
 717
 718     debug(1, "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
 719           "io_irq %d, csc_mask %#2.2x)\n", psock, state->flags,
 720           state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
 721     tcic_setw(TCIC_ADDR+2, (psock << TCIC_SS_SHFT) | TCIC_ADR2_INDREG);
 722
 723     reg = tcic_getb(TCIC_PWR);
 724     reg &= ~(TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock));
 725
 726     if (state->Vcc == 50) {
 727         switch (state->Vpp) {
 728         case 0:   reg |= TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock); break;
 729         case 50:  reg |= TCIC_PWR_VCC(psock); break;
 730         case 120: reg |= TCIC_PWR_VPP(psock); break;
 731         default:  return -EINVAL;
 732         }
 733     } else if (state->Vcc != 0)
 734         return -EINVAL;
 735
 736     if (reg != tcic_getb(TCIC_PWR))
 737         tcic_setb(TCIC_PWR, reg);
 738
 739     reg = TCIC_ILOCK_HOLD_CCLK | TCIC_ILOCK_CWAIT;
 740     if (state->flags & SS_OUTPUT_ENA) {
 741         tcic_setb(TCIC_SCTRL, TCIC_SCTRL_ENA);
 742         reg |= TCIC_ILOCK_CRESENA;
 743     } else
 744         tcic_setb(TCIC_SCTRL, 0);
 745     if (state->flags & SS_RESET)
 746         reg |= TCIC_ILOCK_CRESET;
 747     tcic_aux_setb(TCIC_AUX_ILOCK, reg);
 748
 749     tcic_setw(TCIC_ADDR, TCIC_SCF1(psock));
 750     scf1 = TCIC_SCF1_FINPACK;
 751     scf1 |= TCIC_IRQ(state->io_irq);
 752     if (state->flags & SS_IOCARD) {
 753         scf1 |= TCIC_SCF1_IOSTS;
 754         if (state->flags & SS_SPKR_ENA)
 755             scf1 |= TCIC_SCF1_SPKR;
 756         if (state->flags & SS_DMA_MODE)
 757             scf1 |= TCIC_SCF1_DREQ2 << TCIC_SCF1_DMA_SHIFT;
 758     }
 759     tcic_setw(TCIC_DATA, scf1);
 760
 761     /* Some general setup stuff, and configure status interrupt */
 762     reg = TCIC_WAIT_ASYNC | TCIC_WAIT_SENSE | to_cycles(250);
 763     tcic_aux_setb(TCIC_AUX_WCTL, reg);
 764     tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00|
 765                   TCIC_IRQ(cs_irq));
 766
 767     /* Card status change interrupt mask */
 768     tcic_setw(TCIC_ADDR, TCIC_SCF2(psock));
 769     scf2 = TCIC_SCF2_MALL;
 770     if (state->csc_mask & SS_DETECT) scf2 &= ~TCIC_SCF2_MCD;
 771     if (state->flags & SS_IOCARD) {
 772         if (state->csc_mask & SS_STSCHG) reg &= ~TCIC_SCF2_MLBAT1;
 773     } else {
 774         if (state->csc_mask & SS_BATDEAD) reg &= ~TCIC_SCF2_MLBAT1;
 775         if (state->csc_mask & SS_BATWARN) reg &= ~TCIC_SCF2_MLBAT2;
 776         if (state->csc_mask & SS_READY) reg &= ~TCIC_SCF2_MRDY;
 777     }
 778     tcic_setw(TCIC_DATA, scf2);
 779     /* For the ISA bus, the irq should be active-high totem-pole */
 780     tcic_setb(TCIC_IENA, TCIC_IENA_CDCHG | TCIC_IENA_CFG_HIGH);
 781
 782     return 0;
 783 } /* tcic_set_socket */
 784
 785 /*====================================================================*/
 786
 787 static int tcic_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 788 {
 789     u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
 790     u_int addr;
 791     u_short base, len, ioctl;
 792
 793     debug(1, "SetIOMap(%d, %d, %#2.2x, %d ns, "
 794           "%#4.4x-%#4.4x)\n", psock, io->map, io->flags,
 795           io->speed, io->start, io->stop);
 796     if ((io->map > 1) || (io->start > 0xffff) || (io->stop > 0xffff) ||
 797         (io->stop < io->start)) return -EINVAL;
 798     tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT));
 799     addr = TCIC_IWIN(psock, io->map);
 800
 801     base = io->start; len = io->stop - io->start;
 802     /* Check to see that len+1 is power of two, etc */
 803     if ((len & (len+1)) || (base & len)) return -EINVAL;
 804     base |= (len+1)>>1;
 805     tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X);
 806     tcic_setw(TCIC_DATA, base);
 807
 808     ioctl  = (psock << TCIC_ICTL_SS_SHFT);
 809     ioctl |= (len == 0) ? TCIC_ICTL_TINY : 0;
 810     ioctl |= (io->flags & MAP_ACTIVE) ? TCIC_ICTL_ENA : 0;
 811     ioctl |= to_cycles(io->speed) & TCIC_ICTL_WSCNT_MASK;
 812     if (!(io->flags & MAP_AUTOSZ)) {
 813         ioctl |= TCIC_ICTL_QUIET;
 814         ioctl |= (io->flags & MAP_16BIT) ? TCIC_ICTL_BW_16 : TCIC_ICTL_BW_8;
 815     }
 816     tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X);
 817     tcic_setw(TCIC_DATA, ioctl);
 818
 819     return 0;
 820 } /* tcic_set_io_map */
 821
 822 /*====================================================================*/
 823
 824 static int tcic_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 825 {
 826     u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
 827     u_short addr, ctl;
 828     u_long base, len, mmap;
 829
 830     debug(1, "SetMemMap(%d, %d, %#2.2x, %d ns, "
 831           "%#5.5lx-%#5.5lx, %#5.5x)\n", psock, mem->map, mem->flags,
 832           mem->speed, mem->res->start, mem->res->end, mem->card_start);
 833     if ((mem->map > 3) || (mem->card_start > 0x3ffffff) ||
 834         (mem->res->start > 0xffffff) || (mem->res->end > 0xffffff) ||
 835         (mem->res->start > mem->res->end) || (mem->speed > 1000))
 836         return -EINVAL;
 837     tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT));
 838     addr = TCIC_MWIN(psock, mem->map);
 839
 840     base = mem->res->start; len = mem->res->end - mem->res->start;
 841     if ((len & (len+1)) || (base & len)) return -EINVAL;
 842     if (len == 0x0fff)
 843         base = (base >> TCIC_MBASE_HA_SHFT) | TCIC_MBASE_4K_BIT;
 844     else
 845         base = (base | (len+1)>>1) >> TCIC_MBASE_HA_SHFT;
 846     tcic_setw(TCIC_ADDR, addr + TCIC_MBASE_X);
 847     tcic_setw(TCIC_DATA, base);
 848
 849     mmap = mem->card_start - mem->res->start;
 850     mmap = (mmap >> TCIC_MMAP_CA_SHFT) & TCIC_MMAP_CA_MASK;
 851     if (mem->flags & MAP_ATTRIB) mmap |= TCIC_MMAP_REG;
 852     tcic_setw(TCIC_ADDR, addr + TCIC_MMAP_X);
 853     tcic_setw(TCIC_DATA, mmap);
 854
 855     ctl  = TCIC_MCTL_QUIET | (psock << TCIC_MCTL_SS_SHFT);
 856     ctl |= to_cycles(mem->speed) & TCIC_MCTL_WSCNT_MASK;
 857     ctl |= (mem->flags & MAP_16BIT) ? 0 : TCIC_MCTL_B8;
 858     ctl |= (mem->flags & MAP_WRPROT) ? TCIC_MCTL_WP : 0;
 859     ctl |= (mem->flags & MAP_ACTIVE) ? TCIC_MCTL_ENA : 0;
 860     tcic_setw(TCIC_ADDR, addr + TCIC_MCTL_X);
 861     tcic_setw(TCIC_DATA, ctl);
 862
 863     return 0;
 864 } /* tcic_set_mem_map */
 865
 866 /*====================================================================*/
 867
 868 static int tcic_init(struct pcmcia_socket *s)
 869 {
 870         int i;
 871         struct resource res = { .start = 0, .end = 0x1000 };
 872         pccard_io_map io = { 0, 0, 0, 0, 1 };
 873         pccard_mem_map mem = { .res = &res, };
 874
 875         for (i = 0; i < 2; i++) {
 876                 io.map = i;
 877                 tcic_set_io_map(s, &io);
 878         }
 879         for (i = 0; i < 5; i++) {
 880                 mem.map = i;
 881                 tcic_set_mem_map(s, &mem);
 882         }
 883         return 0;
 884 }
 885
 886 static int tcic_suspend(struct pcmcia_socket *sock)
 887 {
 888         return tcic_set_socket(sock, &dead_socket);
 889 }
 890
 891 static struct pccard_operations tcic_operations = {
 892         .init              = tcic_init,
 893         .suspend           = tcic_suspend,
 894         .get_status        = tcic_get_status,
 895         .get_socket        = tcic_get_socket,
 896         .set_socket        = tcic_set_socket,
 897         .set_io_map        = tcic_set_io_map,
 898         .set_mem_map       = tcic_set_mem_map,
 899 };
 900
 901 /*====================================================================*/
 902
 903 module_init(init_tcic);
 904 module_exit(exit_tcic);