linux/arch/m68k/mac/misc.c
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   1/*
   2 * Miscellaneous Mac68K-specific stuff
   3 */
   4
   5#include <linux/types.h>
   6#include <linux/errno.h>
   7#include <linux/miscdevice.h>
   8#include <linux/kernel.h>
   9#include <linux/delay.h>
  10#include <linux/sched.h>
  11#include <linux/slab.h>
  12#include <linux/time.h>
  13#include <linux/rtc.h>
  14#include <linux/mm.h>
  15
  16#include <linux/adb.h>
  17#include <linux/cuda.h>
  18#include <linux/pmu.h>
  19
  20#include <asm/uaccess.h>
  21#include <asm/io.h>
  22#include <asm/rtc.h>
  23#include <asm/system.h>
  24#include <asm/segment.h>
  25#include <asm/setup.h>
  26#include <asm/macintosh.h>
  27#include <asm/mac_via.h>
  28#include <asm/mac_oss.h>
  29
  30#define BOOTINFO_COMPAT_1_0
  31#include <asm/bootinfo.h>
  32#include <asm/machdep.h>
  33
  34/* Offset between Unix time (1970-based) and Mac time (1904-based) */
  35
  36#define RTC_OFFSET 2082844800
  37
  38static void (*rom_reset)(void);
  39
  40#ifdef CONFIG_ADB_CUDA
  41static long cuda_read_time(void)
  42{
  43        struct adb_request req;
  44        long time;
  45
  46        if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
  47                return 0;
  48        while (!req.complete)
  49                cuda_poll();
  50
  51        time = (req.reply[3] << 24) | (req.reply[4] << 16)
  52                | (req.reply[5] << 8) | req.reply[6];
  53        return time - RTC_OFFSET;
  54}
  55
  56static void cuda_write_time(long data)
  57{
  58        struct adb_request req;
  59        data += RTC_OFFSET;
  60        if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
  61                        (data >> 24) & 0xFF, (data >> 16) & 0xFF,
  62                        (data >> 8) & 0xFF, data & 0xFF) < 0)
  63                return;
  64        while (!req.complete)
  65                cuda_poll();
  66}
  67
  68static __u8 cuda_read_pram(int offset)
  69{
  70        struct adb_request req;
  71        if (cuda_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
  72                        (offset >> 8) & 0xFF, offset & 0xFF) < 0)
  73                return 0;
  74        while (!req.complete)
  75                cuda_poll();
  76        return req.reply[3];
  77}
  78
  79static void cuda_write_pram(int offset, __u8 data)
  80{
  81        struct adb_request req;
  82        if (cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
  83                        (offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
  84                return;
  85        while (!req.complete)
  86                cuda_poll();
  87}
  88#else
  89#define cuda_read_time() 0
  90#define cuda_write_time(n)
  91#define cuda_read_pram NULL
  92#define cuda_write_pram NULL
  93#endif
  94
  95#if 0 /* def CONFIG_ADB_PMU68K */
  96static long pmu_read_time(void)
  97{
  98        struct adb_request req;
  99        long time;
 100
 101        if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
 102                return 0;
 103        while (!req.complete)
 104                pmu_poll();
 105
 106        time = (req.reply[0] << 24) | (req.reply[1] << 16)
 107                | (req.reply[2] << 8) | req.reply[3];
 108        return time - RTC_OFFSET;
 109}
 110
 111static void pmu_write_time(long data)
 112{
 113        struct adb_request req;
 114        data += RTC_OFFSET;
 115        if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
 116                        (data >> 24) & 0xFF, (data >> 16) & 0xFF,
 117                        (data >> 8) & 0xFF, data & 0xFF) < 0)
 118                return;
 119        while (!req.complete)
 120                pmu_poll();
 121}
 122
 123static __u8 pmu_read_pram(int offset)
 124{
 125        struct adb_request req;
 126        if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM,
 127                        (offset >> 8) & 0xFF, offset & 0xFF) < 0)
 128                return 0;
 129        while (!req.complete)
 130                pmu_poll();
 131        return req.reply[3];
 132}
 133
 134static void pmu_write_pram(int offset, __u8 data)
 135{
 136        struct adb_request req;
 137        if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM,
 138                        (offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
 139                return;
 140        while (!req.complete)
 141                pmu_poll();
 142}
 143#else
 144#define pmu_read_time() 0
 145#define pmu_write_time(n)
 146#define pmu_read_pram NULL
 147#define pmu_write_pram NULL
 148#endif
 149
 150#if 0 /* def CONFIG_ADB_MACIISI */
 151extern int maciisi_request(struct adb_request *req,
 152                        void (*done)(struct adb_request *), int nbytes, ...);
 153
 154static long maciisi_read_time(void)
 155{
 156        struct adb_request req;
 157        long time;
 158
 159        if (maciisi_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME))
 160                return 0;
 161
 162        time = (req.reply[3] << 24) | (req.reply[4] << 16)
 163                | (req.reply[5] << 8) | req.reply[6];
 164        return time - RTC_OFFSET;
 165}
 166
 167static void maciisi_write_time(long data)
 168{
 169        struct adb_request req;
 170        data += RTC_OFFSET;
 171        maciisi_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
 172                        (data >> 24) & 0xFF, (data >> 16) & 0xFF,
 173                        (data >> 8) & 0xFF, data & 0xFF);
 174}
 175
 176static __u8 maciisi_read_pram(int offset)
 177{
 178        struct adb_request req;
 179        if (maciisi_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
 180                        (offset >> 8) & 0xFF, offset & 0xFF))
 181                return 0;
 182        return req.reply[3];
 183}
 184
 185static void maciisi_write_pram(int offset, __u8 data)
 186{
 187        struct adb_request req;
 188        maciisi_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
 189                        (offset >> 8) & 0xFF, offset & 0xFF, data);
 190}
 191#else
 192#define maciisi_read_time() 0
 193#define maciisi_write_time(n)
 194#define maciisi_read_pram NULL
 195#define maciisi_write_pram NULL
 196#endif
 197
 198/*
 199 * VIA PRAM/RTC access routines
 200 *
 201 * Must be called with interrupts disabled and
 202 * the RTC should be enabled.
 203 */
 204
 205static __u8 via_pram_readbyte(void)
 206{
 207        int     i,reg;
 208        __u8    data;
 209
 210        reg = via1[vBufB] & ~VIA1B_vRTCClk;
 211
 212        /* Set the RTC data line to be an input. */
 213
 214        via1[vDirB] &= ~VIA1B_vRTCData;
 215
 216        /* The bits of the byte come out in MSB order */
 217
 218        data = 0;
 219        for (i = 0 ; i < 8 ; i++) {
 220                via1[vBufB] = reg;
 221                via1[vBufB] = reg | VIA1B_vRTCClk;
 222                data = (data << 1) | (via1[vBufB] & VIA1B_vRTCData);
 223        }
 224
 225        /* Return RTC data line to output state */
 226
 227        via1[vDirB] |= VIA1B_vRTCData;
 228
 229        return data;
 230}
 231
 232static void via_pram_writebyte(__u8 data)
 233{
 234        int     i,reg,bit;
 235
 236        reg = via1[vBufB] & ~(VIA1B_vRTCClk | VIA1B_vRTCData);
 237
 238        /* The bits of the byte go in in MSB order */
 239
 240        for (i = 0 ; i < 8 ; i++) {
 241                bit = data & 0x80? 1 : 0;
 242                data <<= 1;
 243                via1[vBufB] = reg | bit;
 244                via1[vBufB] = reg | bit | VIA1B_vRTCClk;
 245        }
 246}
 247
 248/*
 249 * Execute a VIA PRAM/RTC command. For read commands
 250 * data should point to a one-byte buffer for the
 251 * resulting data. For write commands it should point
 252 * to the data byte to for the command.
 253 *
 254 * This function disables all interrupts while running.
 255 */
 256
 257static void via_pram_command(int command, __u8 *data)
 258{
 259        unsigned long flags;
 260        int     is_read;
 261
 262        local_irq_save(flags);
 263
 264        /* Enable the RTC and make sure the strobe line is high */
 265
 266        via1[vBufB] = (via1[vBufB] | VIA1B_vRTCClk) & ~VIA1B_vRTCEnb;
 267
 268        if (command & 0xFF00) {         /* extended (two-byte) command */
 269                via_pram_writebyte((command & 0xFF00) >> 8);
 270                via_pram_writebyte(command & 0xFF);
 271                is_read = command & 0x8000;
 272        } else {                        /* one-byte command */
 273                via_pram_writebyte(command);
 274                is_read = command & 0x80;
 275        }
 276        if (is_read) {
 277                *data = via_pram_readbyte();
 278        } else {
 279                via_pram_writebyte(*data);
 280        }
 281
 282        /* All done, disable the RTC */
 283
 284        via1[vBufB] |= VIA1B_vRTCEnb;
 285
 286        local_irq_restore(flags);
 287}
 288
 289static __u8 via_read_pram(int offset)
 290{
 291        return 0;
 292}
 293
 294static void via_write_pram(int offset, __u8 data)
 295{
 296}
 297
 298/*
 299 * Return the current time in seconds since January 1, 1904.
 300 *
 301 * This only works on machines with the VIA-based PRAM/RTC, which
 302 * is basically any machine with Mac II-style ADB.
 303 */
 304
 305static long via_read_time(void)
 306{
 307        union {
 308                __u8  cdata[4];
 309                long  idata;
 310        } result, last_result;
 311        int     ct;
 312
 313        /*
 314         * The NetBSD guys say to loop until you get the same reading
 315         * twice in a row.
 316         */
 317
 318        ct = 0;
 319        do {
 320                if (++ct > 10) {
 321                        printk("via_read_time: couldn't get valid time, "
 322                               "last read = 0x%08lx and 0x%08lx\n",
 323                               last_result.idata, result.idata);
 324                        break;
 325                }
 326
 327                last_result.idata = result.idata;
 328                result.idata = 0;
 329
 330                via_pram_command(0x81, &result.cdata[3]);
 331                via_pram_command(0x85, &result.cdata[2]);
 332                via_pram_command(0x89, &result.cdata[1]);
 333                via_pram_command(0x8D, &result.cdata[0]);
 334        } while (result.idata != last_result.idata);
 335
 336        return result.idata - RTC_OFFSET;
 337}
 338
 339/*
 340 * Set the current time to a number of seconds since January 1, 1904.
 341 *
 342 * This only works on machines with the VIA-based PRAM/RTC, which
 343 * is basically any machine with Mac II-style ADB.
 344 */
 345
 346static void via_write_time(long time)
 347{
 348        union {
 349                __u8  cdata[4];
 350                long  idata;
 351        } data;
 352        __u8    temp;
 353
 354        /* Clear the write protect bit */
 355
 356        temp = 0x55;
 357        via_pram_command(0x35, &temp);
 358
 359        data.idata = time + RTC_OFFSET;
 360        via_pram_command(0x01, &data.cdata[3]);
 361        via_pram_command(0x05, &data.cdata[2]);
 362        via_pram_command(0x09, &data.cdata[1]);
 363        via_pram_command(0x0D, &data.cdata[0]);
 364
 365        /* Set the write protect bit */
 366
 367        temp = 0xD5;
 368        via_pram_command(0x35, &temp);
 369}
 370
 371static void via_shutdown(void)
 372{
 373        if (rbv_present) {
 374                via2[rBufB] &= ~0x04;
 375        } else {
 376                /* Direction of vDirB is output */
 377                via2[vDirB] |= 0x04;
 378                /* Send a value of 0 on that line */
 379                via2[vBufB] &= ~0x04;
 380                mdelay(1000);
 381        }
 382}
 383
 384/*
 385 * FIXME: not sure how this is supposed to work exactly...
 386 */
 387
 388static void oss_shutdown(void)
 389{
 390        oss->rom_ctrl = OSS_POWEROFF;
 391}
 392
 393#ifdef CONFIG_ADB_CUDA
 394
 395static void cuda_restart(void)
 396{
 397        struct adb_request req;
 398        if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM) < 0)
 399                return;
 400        while (!req.complete)
 401                cuda_poll();
 402}
 403
 404static void cuda_shutdown(void)
 405{
 406        struct adb_request req;
 407        if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN) < 0)
 408                return;
 409        while (!req.complete)
 410                cuda_poll();
 411}
 412
 413#endif /* CONFIG_ADB_CUDA */
 414
 415#ifdef CONFIG_ADB_PMU68K
 416
 417void pmu_restart(void)
 418{
 419        struct adb_request req;
 420        if (pmu_request(&req, NULL,
 421                        2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
 422                return;
 423        while (!req.complete)
 424                pmu_poll();
 425        if (pmu_request(&req, NULL, 1, PMU_RESET) < 0)
 426                return;
 427        while (!req.complete)
 428                pmu_poll();
 429}
 430
 431void pmu_shutdown(void)
 432{
 433        struct adb_request req;
 434        if (pmu_request(&req, NULL,
 435                        2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
 436                return;
 437        while (!req.complete)
 438                pmu_poll();
 439        if (pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 'M', 'A', 'T', 'T') < 0)
 440                return;
 441        while (!req.complete)
 442                pmu_poll();
 443}
 444
 445#endif
 446
 447/*
 448 *-------------------------------------------------------------------
 449 * Below this point are the generic routines; they'll dispatch to the
 450 * correct routine for the hardware on which we're running.
 451 *-------------------------------------------------------------------
 452 */
 453
 454void mac_pram_read(int offset, __u8 *buffer, int len)
 455{
 456        __u8 (*func)(int);
 457        int i;
 458
 459        switch(macintosh_config->adb_type) {
 460        case MAC_ADB_IISI:
 461                func = maciisi_read_pram; break;
 462        case MAC_ADB_PB1:
 463        case MAC_ADB_PB2:
 464                func = pmu_read_pram; break;
 465        case MAC_ADB_CUDA:
 466                func = cuda_read_pram; break;
 467        default:
 468                func = via_read_pram;
 469        }
 470        if (!func)
 471                return;
 472        for (i = 0 ; i < len ; i++) {
 473                buffer[i] = (*func)(offset++);
 474        }
 475}
 476
 477void mac_pram_write(int offset, __u8 *buffer, int len)
 478{
 479        void (*func)(int, __u8);
 480        int i;
 481
 482        switch(macintosh_config->adb_type) {
 483        case MAC_ADB_IISI:
 484                func = maciisi_write_pram; break;
 485        case MAC_ADB_PB1:
 486        case MAC_ADB_PB2:
 487                func = pmu_write_pram; break;
 488        case MAC_ADB_CUDA:
 489                func = cuda_write_pram; break;
 490        default:
 491                func = via_write_pram;
 492        }
 493        if (!func)
 494                return;
 495        for (i = 0 ; i < len ; i++) {
 496                (*func)(offset++, buffer[i]);
 497        }
 498}
 499
 500void mac_poweroff(void)
 501{
 502        /*
 503         * MAC_ADB_IISI may need to be moved up here if it doesn't actually
 504         * work using the ADB packet method.  --David Kilzer
 505         */
 506
 507        if (oss_present) {
 508                oss_shutdown();
 509        } else if (macintosh_config->adb_type == MAC_ADB_II) {
 510                via_shutdown();
 511#ifdef CONFIG_ADB_CUDA
 512        } else if (macintosh_config->adb_type == MAC_ADB_CUDA) {
 513                cuda_shutdown();
 514#endif
 515#ifdef CONFIG_ADB_PMU68K
 516        } else if (macintosh_config->adb_type == MAC_ADB_PB1
 517                || macintosh_config->adb_type == MAC_ADB_PB2) {
 518                pmu_shutdown();
 519#endif
 520        }
 521        local_irq_enable();
 522        printk("It is now safe to turn off your Macintosh.\n");
 523        while(1);
 524}
 525
 526void mac_reset(void)
 527{
 528        if (macintosh_config->adb_type == MAC_ADB_II) {
 529                unsigned long flags;
 530
 531                /* need ROMBASE in booter */
 532                /* indeed, plus need to MAP THE ROM !! */
 533
 534                if (mac_bi_data.rombase == 0)
 535                        mac_bi_data.rombase = 0x40800000;
 536
 537                /* works on some */
 538                rom_reset = (void *) (mac_bi_data.rombase + 0xa);
 539
 540                if (macintosh_config->ident == MAC_MODEL_SE30) {
 541                        /*
 542                         * MSch: Machines known to crash on ROM reset ...
 543                         */
 544                } else {
 545                        local_irq_save(flags);
 546
 547                        rom_reset();
 548
 549                        local_irq_restore(flags);
 550                }
 551#ifdef CONFIG_ADB_CUDA
 552        } else if (macintosh_config->adb_type == MAC_ADB_CUDA) {
 553                cuda_restart();
 554#endif
 555#ifdef CONFIG_ADB_PMU68K
 556        } else if (macintosh_config->adb_type == MAC_ADB_PB1
 557                || macintosh_config->adb_type == MAC_ADB_PB2) {
 558                pmu_restart();
 559#endif
 560        } else if (CPU_IS_030) {
 561
 562                /* 030-specific reset routine.  The idea is general, but the
 563                 * specific registers to reset are '030-specific.  Until I
 564                 * have a non-030 machine, I can't test anything else.
 565                 *  -- C. Scott Ananian <cananian@alumni.princeton.edu>
 566                 */
 567
 568                unsigned long rombase = 0x40000000;
 569
 570                /* make a 1-to-1 mapping, using the transparent tran. reg. */
 571                unsigned long virt = (unsigned long) mac_reset;
 572                unsigned long phys = virt_to_phys(mac_reset);
 573                unsigned long addr = (phys&0xFF000000)|0x8777;
 574                unsigned long offset = phys-virt;
 575                local_irq_disable(); /* lets not screw this up, ok? */
 576                __asm__ __volatile__(".chip 68030\n\t"
 577                                     "pmove %0,%/tt0\n\t"
 578                                     ".chip 68k"
 579                                     : : "m" (addr));
 580                /* Now jump to physical address so we can disable MMU */
 581                __asm__ __volatile__(
 582                    ".chip 68030\n\t"
 583                    "lea %/pc@(1f),%/a0\n\t"
 584                    "addl %0,%/a0\n\t"/* fixup target address and stack ptr */
 585                    "addl %0,%/sp\n\t"
 586                    "pflusha\n\t"
 587                    "jmp %/a0@\n\t" /* jump into physical memory */
 588                    "0:.long 0\n\t" /* a constant zero. */
 589                    /* OK.  Now reset everything and jump to reset vector. */
 590                    "1:\n\t"
 591                    "lea %/pc@(0b),%/a0\n\t"
 592                    "pmove %/a0@, %/tc\n\t" /* disable mmu */
 593                    "pmove %/a0@, %/tt0\n\t" /* disable tt0 */
 594                    "pmove %/a0@, %/tt1\n\t" /* disable tt1 */
 595                    "movel #0, %/a0\n\t"
 596                    "movec %/a0, %/vbr\n\t" /* clear vector base register */
 597                    "movec %/a0, %/cacr\n\t" /* disable caches */
 598                    "movel #0x0808,%/a0\n\t"
 599                    "movec %/a0, %/cacr\n\t" /* flush i&d caches */
 600                    "movew #0x2700,%/sr\n\t" /* set up status register */
 601                    "movel %1@(0x0),%/a0\n\t"/* load interrupt stack pointer */
 602                    "movec %/a0, %/isp\n\t"
 603                    "movel %1@(0x4),%/a0\n\t" /* load reset vector */
 604                    "reset\n\t" /* reset external devices */
 605                    "jmp %/a0@\n\t" /* jump to the reset vector */
 606                    ".chip 68k"
 607                    : : "r" (offset), "a" (rombase) : "a0");
 608        }
 609
 610        /* should never get here */
 611        local_irq_enable();
 612        printk ("Restart failed.  Please restart manually.\n");
 613        while(1);
 614}
 615
 616/*
 617 * This function translates seconds since 1970 into a proper date.
 618 *
 619 * Algorithm cribbed from glibc2.1, __offtime().
 620 */
 621#define SECS_PER_MINUTE (60)
 622#define SECS_PER_HOUR  (SECS_PER_MINUTE * 60)
 623#define SECS_PER_DAY   (SECS_PER_HOUR * 24)
 624
 625static void unmktime(unsigned long time, long offset,
 626                     int *yearp, int *monp, int *dayp,
 627                     int *hourp, int *minp, int *secp)
 628{
 629        /* How many days come before each month (0-12).  */
 630        static const unsigned short int __mon_yday[2][13] =
 631        {
 632                /* Normal years.  */
 633                { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
 634                /* Leap years.  */
 635                { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
 636        };
 637        long int days, rem, y, wday, yday;
 638        const unsigned short int *ip;
 639
 640        days = time / SECS_PER_DAY;
 641        rem = time % SECS_PER_DAY;
 642        rem += offset;
 643        while (rem < 0) {
 644                rem += SECS_PER_DAY;
 645                --days;
 646        }
 647        while (rem >= SECS_PER_DAY) {
 648                rem -= SECS_PER_DAY;
 649                ++days;
 650        }
 651        *hourp = rem / SECS_PER_HOUR;
 652        rem %= SECS_PER_HOUR;
 653        *minp = rem / SECS_PER_MINUTE;
 654        *secp = rem % SECS_PER_MINUTE;
 655        /* January 1, 1970 was a Thursday. */
 656        wday = (4 + days) % 7; /* Day in the week. Not currently used */
 657        if (wday < 0) wday += 7;
 658        y = 1970;
 659
 660#define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
 661#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
 662#define __isleap(year)  \
 663  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
 664
 665        while (days < 0 || days >= (__isleap (y) ? 366 : 365))
 666        {
 667                /* Guess a corrected year, assuming 365 days per year.  */
 668                long int yg = y + days / 365 - (days % 365 < 0);
 669
 670                /* Adjust DAYS and Y to match the guessed year.  */
 671                days -= ((yg - y) * 365
 672                         + LEAPS_THRU_END_OF (yg - 1)
 673                         - LEAPS_THRU_END_OF (y - 1));
 674                y = yg;
 675        }
 676        *yearp = y - 1900;
 677        yday = days; /* day in the year.  Not currently used. */
 678        ip = __mon_yday[__isleap(y)];
 679        for (y = 11; days < (long int) ip[y]; --y)
 680                continue;
 681        days -= ip[y];
 682        *monp = y;
 683        *dayp = days + 1; /* day in the month */
 684        return;
 685}
 686
 687/*
 688 * Read/write the hardware clock.
 689 */
 690
 691int mac_hwclk(int op, struct rtc_time *t)
 692{
 693        unsigned long now;
 694
 695        if (!op) { /* read */
 696                switch (macintosh_config->adb_type) {
 697                case MAC_ADB_II:
 698                case MAC_ADB_IOP:
 699                        now = via_read_time();
 700                        break;
 701                case MAC_ADB_IISI:
 702                        now = maciisi_read_time();
 703                        break;
 704                case MAC_ADB_PB1:
 705                case MAC_ADB_PB2:
 706                        now = pmu_read_time();
 707                        break;
 708                case MAC_ADB_CUDA:
 709                        now = cuda_read_time();
 710                        break;
 711                default:
 712                        now = 0;
 713                }
 714
 715                t->tm_wday = 0;
 716                unmktime(now, 0,
 717                         &t->tm_year, &t->tm_mon, &t->tm_mday,
 718                         &t->tm_hour, &t->tm_min, &t->tm_sec);
 719#if 0
 720                printk("mac_hwclk: read %04d-%02d-%-2d %02d:%02d:%02d\n",
 721                        t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 722                        t->tm_hour, t->tm_min, t->tm_sec);
 723#endif
 724        } else { /* write */
 725#if 0
 726                printk("mac_hwclk: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
 727                        t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 728                        t->tm_hour, t->tm_min, t->tm_sec);
 729#endif
 730
 731                now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 732                             t->tm_hour, t->tm_min, t->tm_sec);
 733
 734                switch (macintosh_config->adb_type) {
 735                case MAC_ADB_II:
 736                case MAC_ADB_IOP:
 737                        via_write_time(now);
 738                        break;
 739                case MAC_ADB_CUDA:
 740                        cuda_write_time(now);
 741                        break;
 742                case MAC_ADB_PB1:
 743                case MAC_ADB_PB2:
 744                        pmu_write_time(now);
 745                        break;
 746                case MAC_ADB_IISI:
 747                        maciisi_write_time(now);
 748                }
 749        }
 750        return 0;
 751}
 752
 753/*
 754 * Set minutes/seconds in the hardware clock
 755 */
 756
 757int mac_set_clock_mmss (unsigned long nowtime)
 758{
 759        struct rtc_time now;
 760
 761        mac_hwclk(0, &now);
 762        now.tm_sec = nowtime % 60;
 763        now.tm_min = (nowtime / 60) % 60;
 764        mac_hwclk(1, &now);
 765
 766        return 0;
 767}
 768
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