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TOMOYO Linux Cross Reference
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/time.h>
 12 #include <linux/rtc.h>
 13 #include <linux/mm.h>
 14 
 15 #include <linux/adb.h>
 16 #include <linux/cuda.h>
 17 #include <linux/pmu.h>
 18 
 19 #include <asm/uaccess.h>
 20 #include <asm/io.h>
 21 #include <asm/rtc.h>
 22 #include <asm/segment.h>
 23 #include <asm/setup.h>
 24 #include <asm/macintosh.h>
 25 #include <asm/mac_via.h>
 26 #include <asm/mac_oss.h>
 27 
 28 #include <asm/machdep.h>
 29 
 30 /* Offset between Unix time (1970-based) and Mac time (1904-based) */
 31 
 32 #define RTC_OFFSET 2082844800
 33 
 34 static void (*rom_reset)(void);
 35 
 36 #ifdef CONFIG_ADB_CUDA
 37 static long cuda_read_time(void)
 38 {
 39         struct adb_request req;
 40         long time;
 41 
 42         if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
 43                 return 0;
 44         while (!req.complete)
 45                 cuda_poll();
 46 
 47         time = (req.reply[3] << 24) | (req.reply[4] << 16)
 48                 | (req.reply[5] << 8) | req.reply[6];
 49         return time - RTC_OFFSET;
 50 }
 51 
 52 static void cuda_write_time(long data)
 53 {
 54         struct adb_request req;
 55         data += RTC_OFFSET;
 56         if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
 57                         (data >> 24) & 0xFF, (data >> 16) & 0xFF,
 58                         (data >> 8) & 0xFF, data & 0xFF) < 0)
 59                 return;
 60         while (!req.complete)
 61                 cuda_poll();
 62 }
 63 
 64 static __u8 cuda_read_pram(int offset)
 65 {
 66         struct adb_request req;
 67         if (cuda_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
 68                         (offset >> 8) & 0xFF, offset & 0xFF) < 0)
 69                 return 0;
 70         while (!req.complete)
 71                 cuda_poll();
 72         return req.reply[3];
 73 }
 74 
 75 static void cuda_write_pram(int offset, __u8 data)
 76 {
 77         struct adb_request req;
 78         if (cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
 79                         (offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
 80                 return;
 81         while (!req.complete)
 82                 cuda_poll();
 83 }
 84 #else
 85 #define cuda_read_time() 0
 86 #define cuda_write_time(n)
 87 #define cuda_read_pram NULL
 88 #define cuda_write_pram NULL
 89 #endif
 90 
 91 #ifdef CONFIG_ADB_PMU68K
 92 static long pmu_read_time(void)
 93 {
 94         struct adb_request req;
 95         long time;
 96 
 97         if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
 98                 return 0;
 99         while (!req.complete)
100                 pmu_poll();
101 
102         time = (req.reply[1] << 24) | (req.reply[2] << 16)
103                 | (req.reply[3] << 8) | req.reply[4];
104         return time - RTC_OFFSET;
105 }
106 
107 static void pmu_write_time(long data)
108 {
109         struct adb_request req;
110         data += RTC_OFFSET;
111         if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
112                         (data >> 24) & 0xFF, (data >> 16) & 0xFF,
113                         (data >> 8) & 0xFF, data & 0xFF) < 0)
114                 return;
115         while (!req.complete)
116                 pmu_poll();
117 }
118 
119 static __u8 pmu_read_pram(int offset)
120 {
121         struct adb_request req;
122         if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM,
123                         (offset >> 8) & 0xFF, offset & 0xFF) < 0)
124                 return 0;
125         while (!req.complete)
126                 pmu_poll();
127         return req.reply[3];
128 }
129 
130 static void pmu_write_pram(int offset, __u8 data)
131 {
132         struct adb_request req;
133         if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM,
134                         (offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
135                 return;
136         while (!req.complete)
137                 pmu_poll();
138 }
139 #else
140 #define pmu_read_time() 0
141 #define pmu_write_time(n)
142 #define pmu_read_pram NULL
143 #define pmu_write_pram NULL
144 #endif
145 
146 #if 0 /* def CONFIG_ADB_MACIISI */
147 extern int maciisi_request(struct adb_request *req,
148                         void (*done)(struct adb_request *), int nbytes, ...);
149 
150 static long maciisi_read_time(void)
151 {
152         struct adb_request req;
153         long time;
154 
155         if (maciisi_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME))
156                 return 0;
157 
158         time = (req.reply[3] << 24) | (req.reply[4] << 16)
159                 | (req.reply[5] << 8) | req.reply[6];
160         return time - RTC_OFFSET;
161 }
162 
163 static void maciisi_write_time(long data)
164 {
165         struct adb_request req;
166         data += RTC_OFFSET;
167         maciisi_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
168                         (data >> 24) & 0xFF, (data >> 16) & 0xFF,
169                         (data >> 8) & 0xFF, data & 0xFF);
170 }
171 
172 static __u8 maciisi_read_pram(int offset)
173 {
174         struct adb_request req;
175         if (maciisi_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
176                         (offset >> 8) & 0xFF, offset & 0xFF))
177                 return 0;
178         return req.reply[3];
179 }
180 
181 static void maciisi_write_pram(int offset, __u8 data)
182 {
183         struct adb_request req;
184         maciisi_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
185                         (offset >> 8) & 0xFF, offset & 0xFF, data);
186 }
187 #else
188 #define maciisi_read_time() 0
189 #define maciisi_write_time(n)
190 #define maciisi_read_pram NULL
191 #define maciisi_write_pram NULL
192 #endif
193 
194 /*
195  * VIA PRAM/RTC access routines
196  *
197  * Must be called with interrupts disabled and
198  * the RTC should be enabled.
199  */
200 
201 static __u8 via_pram_readbyte(void)
202 {
203         int     i,reg;
204         __u8    data;
205 
206         reg = via1[vBufB] & ~VIA1B_vRTCClk;
207 
208         /* Set the RTC data line to be an input. */
209 
210         via1[vDirB] &= ~VIA1B_vRTCData;
211 
212         /* The bits of the byte come out in MSB order */
213 
214         data = 0;
215         for (i = 0 ; i < 8 ; i++) {
216                 via1[vBufB] = reg;
217                 via1[vBufB] = reg | VIA1B_vRTCClk;
218                 data = (data << 1) | (via1[vBufB] & VIA1B_vRTCData);
219         }
220 
221         /* Return RTC data line to output state */
222 
223         via1[vDirB] |= VIA1B_vRTCData;
224 
225         return data;
226 }
227 
228 static void via_pram_writebyte(__u8 data)
229 {
230         int     i,reg,bit;
231 
232         reg = via1[vBufB] & ~(VIA1B_vRTCClk | VIA1B_vRTCData);
233 
234         /* The bits of the byte go in in MSB order */
235 
236         for (i = 0 ; i < 8 ; i++) {
237                 bit = data & 0x80? 1 : 0;
238                 data <<= 1;
239                 via1[vBufB] = reg | bit;
240                 via1[vBufB] = reg | bit | VIA1B_vRTCClk;
241         }
242 }
243 
244 /*
245  * Execute a VIA PRAM/RTC command. For read commands
246  * data should point to a one-byte buffer for the
247  * resulting data. For write commands it should point
248  * to the data byte to for the command.
249  *
250  * This function disables all interrupts while running.
251  */
252 
253 static void via_pram_command(int command, __u8 *data)
254 {
255         unsigned long flags;
256         int     is_read;
257 
258         local_irq_save(flags);
259 
260         /* Enable the RTC and make sure the strobe line is high */
261 
262         via1[vBufB] = (via1[vBufB] | VIA1B_vRTCClk) & ~VIA1B_vRTCEnb;
263 
264         if (command & 0xFF00) {         /* extended (two-byte) command */
265                 via_pram_writebyte((command & 0xFF00) >> 8);
266                 via_pram_writebyte(command & 0xFF);
267                 is_read = command & 0x8000;
268         } else {                        /* one-byte command */
269                 via_pram_writebyte(command);
270                 is_read = command & 0x80;
271         }
272         if (is_read) {
273                 *data = via_pram_readbyte();
274         } else {
275                 via_pram_writebyte(*data);
276         }
277 
278         /* All done, disable the RTC */
279 
280         via1[vBufB] |= VIA1B_vRTCEnb;
281 
282         local_irq_restore(flags);
283 }
284 
285 static __u8 via_read_pram(int offset)
286 {
287         return 0;
288 }
289 
290 static void via_write_pram(int offset, __u8 data)
291 {
292 }
293 
294 /*
295  * Return the current time in seconds since January 1, 1904.
296  *
297  * This only works on machines with the VIA-based PRAM/RTC, which
298  * is basically any machine with Mac II-style ADB.
299  */
300 
301 static long via_read_time(void)
302 {
303         union {
304                 __u8 cdata[4];
305                 long idata;
306         } result, last_result;
307         int count = 1;
308 
309         via_pram_command(0x81, &last_result.cdata[3]);
310         via_pram_command(0x85, &last_result.cdata[2]);
311         via_pram_command(0x89, &last_result.cdata[1]);
312         via_pram_command(0x8D, &last_result.cdata[0]);
313 
314         /*
315          * The NetBSD guys say to loop until you get the same reading
316          * twice in a row.
317          */
318 
319         while (1) {
320                 via_pram_command(0x81, &result.cdata[3]);
321                 via_pram_command(0x85, &result.cdata[2]);
322                 via_pram_command(0x89, &result.cdata[1]);
323                 via_pram_command(0x8D, &result.cdata[0]);
324 
325                 if (result.idata == last_result.idata)
326                         return result.idata - RTC_OFFSET;
327 
328                 if (++count > 10)
329                         break;
330 
331                 last_result.idata = result.idata;
332         }
333 
334         pr_err("via_read_time: failed to read a stable value; "
335                "got 0x%08lx then 0x%08lx\n",
336                last_result.idata, result.idata);
337 
338         return 0;
339 }
340 
341 /*
342  * Set the current time to a number of seconds since January 1, 1904.
343  *
344  * This only works on machines with the VIA-based PRAM/RTC, which
345  * is basically any machine with Mac II-style ADB.
346  */
347 
348 static void via_write_time(long time)
349 {
350         union {
351                 __u8  cdata[4];
352                 long  idata;
353         } data;
354         __u8    temp;
355 
356         /* Clear the write protect bit */
357 
358         temp = 0x55;
359         via_pram_command(0x35, &temp);
360 
361         data.idata = time + RTC_OFFSET;
362         via_pram_command(0x01, &data.cdata[3]);
363         via_pram_command(0x05, &data.cdata[2]);
364         via_pram_command(0x09, &data.cdata[1]);
365         via_pram_command(0x0D, &data.cdata[0]);
366 
367         /* Set the write protect bit */
368 
369         temp = 0xD5;
370         via_pram_command(0x35, &temp);
371 }
372 
373 static void via_shutdown(void)
374 {
375         if (rbv_present) {
376                 via2[rBufB] &= ~0x04;
377         } else {
378                 /* Direction of vDirB is output */
379                 via2[vDirB] |= 0x04;
380                 /* Send a value of 0 on that line */
381                 via2[vBufB] &= ~0x04;
382                 mdelay(1000);
383         }
384 }
385 
386 /*
387  * FIXME: not sure how this is supposed to work exactly...
388  */
389 
390 static void oss_shutdown(void)
391 {
392         oss->rom_ctrl = OSS_POWEROFF;
393 }
394 
395 #ifdef CONFIG_ADB_CUDA
396 
397 static void cuda_restart(void)
398 {
399         struct adb_request req;
400         if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM) < 0)
401                 return;
402         while (!req.complete)
403                 cuda_poll();
404 }
405 
406 static void cuda_shutdown(void)
407 {
408         struct adb_request req;
409         if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN) < 0)
410                 return;
411         while (!req.complete)
412                 cuda_poll();
413 }
414 
415 #endif /* CONFIG_ADB_CUDA */
416 
417 #ifdef CONFIG_ADB_PMU68K
418 
419 void pmu_restart(void)
420 {
421         struct adb_request req;
422         if (pmu_request(&req, NULL,
423                         2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
424                 return;
425         while (!req.complete)
426                 pmu_poll();
427         if (pmu_request(&req, NULL, 1, PMU_RESET) < 0)
428                 return;
429         while (!req.complete)
430                 pmu_poll();
431 }
432 
433 void pmu_shutdown(void)
434 {
435         struct adb_request req;
436         if (pmu_request(&req, NULL,
437                         2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
438                 return;
439         while (!req.complete)
440                 pmu_poll();
441         if (pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 'M', 'A', 'T', 'T') < 0)
442                 return;
443         while (!req.complete)
444                 pmu_poll();
445 }
446 
447 #endif
448 
449 /*
450  *-------------------------------------------------------------------
451  * Below this point are the generic routines; they'll dispatch to the
452  * correct routine for the hardware on which we're running.
453  *-------------------------------------------------------------------
454  */
455 
456 void mac_pram_read(int offset, __u8 *buffer, int len)
457 {
458         __u8 (*func)(int);
459         int i;
460 
461         switch(macintosh_config->adb_type) {
462         case MAC_ADB_IISI:
463                 func = maciisi_read_pram; break;
464         case MAC_ADB_PB1:
465         case MAC_ADB_PB2:
466                 func = pmu_read_pram; break;
467         case MAC_ADB_CUDA:
468                 func = cuda_read_pram; break;
469         default:
470                 func = via_read_pram;
471         }
472         if (!func)
473                 return;
474         for (i = 0 ; i < len ; i++) {
475                 buffer[i] = (*func)(offset++);
476         }
477 }
478 
479 void mac_pram_write(int offset, __u8 *buffer, int len)
480 {
481         void (*func)(int, __u8);
482         int i;
483 
484         switch(macintosh_config->adb_type) {
485         case MAC_ADB_IISI:
486                 func = maciisi_write_pram; break;
487         case MAC_ADB_PB1:
488         case MAC_ADB_PB2:
489                 func = pmu_write_pram; break;
490         case MAC_ADB_CUDA:
491                 func = cuda_write_pram; break;
492         default:
493                 func = via_write_pram;
494         }
495         if (!func)
496                 return;
497         for (i = 0 ; i < len ; i++) {
498                 (*func)(offset++, buffer[i]);
499         }
500 }
501 
502 void mac_poweroff(void)
503 {
504         /*
505          * MAC_ADB_IISI may need to be moved up here if it doesn't actually
506          * work using the ADB packet method.  --David Kilzer
507          */
508 
509         if (oss_present) {
510                 oss_shutdown();
511         } else if (macintosh_config->adb_type == MAC_ADB_II) {
512                 via_shutdown();
513 #ifdef CONFIG_ADB_CUDA
514         } else if (macintosh_config->adb_type == MAC_ADB_CUDA) {
515                 cuda_shutdown();
516 #endif
517 #ifdef CONFIG_ADB_PMU68K
518         } else if (macintosh_config->adb_type == MAC_ADB_PB1
519                 || macintosh_config->adb_type == MAC_ADB_PB2) {
520                 pmu_shutdown();
521 #endif
522         }
523         local_irq_enable();
524         printk("It is now safe to turn off your Macintosh.\n");
525         while(1);
526 }
527 
528 void mac_reset(void)
529 {
530         if (macintosh_config->adb_type == MAC_ADB_II) {
531                 unsigned long flags;
532 
533                 /* need ROMBASE in booter */
534                 /* indeed, plus need to MAP THE ROM !! */
535 
536                 if (mac_bi_data.rombase == 0)
537                         mac_bi_data.rombase = 0x40800000;
538 
539                 /* works on some */
540                 rom_reset = (void *) (mac_bi_data.rombase + 0xa);
541 
542                 if (macintosh_config->ident == MAC_MODEL_SE30) {
543                         /*
544                          * MSch: Machines known to crash on ROM reset ...
545                          */
546                 } else {
547                         local_irq_save(flags);
548 
549                         rom_reset();
550 
551                         local_irq_restore(flags);
552                 }
553 #ifdef CONFIG_ADB_CUDA
554         } else if (macintosh_config->adb_type == MAC_ADB_CUDA) {
555                 cuda_restart();
556 #endif
557 #ifdef CONFIG_ADB_PMU68K
558         } else if (macintosh_config->adb_type == MAC_ADB_PB1
559                 || macintosh_config->adb_type == MAC_ADB_PB2) {
560                 pmu_restart();
561 #endif
562         } else if (CPU_IS_030) {
563 
564                 /* 030-specific reset routine.  The idea is general, but the
565                  * specific registers to reset are '030-specific.  Until I
566                  * have a non-030 machine, I can't test anything else.
567                  *  -- C. Scott Ananian <cananian@alumni.princeton.edu>
568                  */
569 
570                 unsigned long rombase = 0x40000000;
571 
572                 /* make a 1-to-1 mapping, using the transparent tran. reg. */
573                 unsigned long virt = (unsigned long) mac_reset;
574                 unsigned long phys = virt_to_phys(mac_reset);
575                 unsigned long addr = (phys&0xFF000000)|0x8777;
576                 unsigned long offset = phys-virt;
577                 local_irq_disable(); /* lets not screw this up, ok? */
578                 __asm__ __volatile__(".chip 68030\n\t"
579                                      "pmove %0,%/tt0\n\t"
580                                      ".chip 68k"
581                                      : : "m" (addr));
582                 /* Now jump to physical address so we can disable MMU */
583                 __asm__ __volatile__(
584                     ".chip 68030\n\t"
585                     "lea %/pc@(1f),%/a0\n\t"
586                     "addl %0,%/a0\n\t"/* fixup target address and stack ptr */
587                     "addl %0,%/sp\n\t"
588                     "pflusha\n\t"
589                     "jmp %/a0@\n\t" /* jump into physical memory */
590                     "0:.long 0\n\t" /* a constant zero. */
591                     /* OK.  Now reset everything and jump to reset vector. */
592                     "1:\n\t"
593                     "lea %/pc@(0b),%/a0\n\t"
594                     "pmove %/a0@, %/tc\n\t" /* disable mmu */
595                     "pmove %/a0@, %/tt0\n\t" /* disable tt0 */
596                     "pmove %/a0@, %/tt1\n\t" /* disable tt1 */
597                     "movel #0, %/a0\n\t"
598                     "movec %/a0, %/vbr\n\t" /* clear vector base register */
599                     "movec %/a0, %/cacr\n\t" /* disable caches */
600                     "movel #0x0808,%/a0\n\t"
601                     "movec %/a0, %/cacr\n\t" /* flush i&d caches */
602                     "movew #0x2700,%/sr\n\t" /* set up status register */
603                     "movel %1@(0x0),%/a0\n\t"/* load interrupt stack pointer */
604                     "movec %/a0, %/isp\n\t"
605                     "movel %1@(0x4),%/a0\n\t" /* load reset vector */
606                     "reset\n\t" /* reset external devices */
607                     "jmp %/a0@\n\t" /* jump to the reset vector */
608                     ".chip 68k"
609                     : : "r" (offset), "a" (rombase) : "a0");
610         }
611 
612         /* should never get here */
613         local_irq_enable();
614         printk ("Restart failed.  Please restart manually.\n");
615         while(1);
616 }
617 
618 /*
619  * This function translates seconds since 1970 into a proper date.
620  *
621  * Algorithm cribbed from glibc2.1, __offtime().
622  */
623 #define SECS_PER_MINUTE (60)
624 #define SECS_PER_HOUR  (SECS_PER_MINUTE * 60)
625 #define SECS_PER_DAY   (SECS_PER_HOUR * 24)
626 
627 static void unmktime(unsigned long time, long offset,
628                      int *yearp, int *monp, int *dayp,
629                      int *hourp, int *minp, int *secp)
630 {
631         /* How many days come before each month (0-12).  */
632         static const unsigned short int __mon_yday[2][13] =
633         {
634                 /* Normal years.  */
635                 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
636                 /* Leap years.  */
637                 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
638         };
639         long int days, rem, y, wday, yday;
640         const unsigned short int *ip;
641 
642         days = time / SECS_PER_DAY;
643         rem = time % SECS_PER_DAY;
644         rem += offset;
645         while (rem < 0) {
646                 rem += SECS_PER_DAY;
647                 --days;
648         }
649         while (rem >= SECS_PER_DAY) {
650                 rem -= SECS_PER_DAY;
651                 ++days;
652         }
653         *hourp = rem / SECS_PER_HOUR;
654         rem %= SECS_PER_HOUR;
655         *minp = rem / SECS_PER_MINUTE;
656         *secp = rem % SECS_PER_MINUTE;
657         /* January 1, 1970 was a Thursday. */
658         wday = (4 + days) % 7; /* Day in the week. Not currently used */
659         if (wday < 0) wday += 7;
660         y = 1970;
661 
662 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
663 #define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
664 #define __isleap(year)  \
665   ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
666 
667         while (days < 0 || days >= (__isleap (y) ? 366 : 365))
668         {
669                 /* Guess a corrected year, assuming 365 days per year.  */
670                 long int yg = y + days / 365 - (days % 365 < 0);
671 
672                 /* Adjust DAYS and Y to match the guessed year.  */
673                 days -= ((yg - y) * 365
674                          + LEAPS_THRU_END_OF (yg - 1)
675                          - LEAPS_THRU_END_OF (y - 1));
676                 y = yg;
677         }
678         *yearp = y - 1900;
679         yday = days; /* day in the year.  Not currently used. */
680         ip = __mon_yday[__isleap(y)];
681         for (y = 11; days < (long int) ip[y]; --y)
682                 continue;
683         days -= ip[y];
684         *monp = y;
685         *dayp = days + 1; /* day in the month */
686         return;
687 }
688 
689 /*
690  * Read/write the hardware clock.
691  */
692 
693 int mac_hwclk(int op, struct rtc_time *t)
694 {
695         unsigned long now;
696 
697         if (!op) { /* read */
698                 switch (macintosh_config->adb_type) {
699                 case MAC_ADB_II:
700                 case MAC_ADB_IOP:
701                         now = via_read_time();
702                         break;
703                 case MAC_ADB_IISI:
704                         now = maciisi_read_time();
705                         break;
706                 case MAC_ADB_PB1:
707                 case MAC_ADB_PB2:
708                         now = pmu_read_time();
709                         break;
710                 case MAC_ADB_CUDA:
711                         now = cuda_read_time();
712                         break;
713                 default:
714                         now = 0;
715                 }
716 
717                 t->tm_wday = 0;
718                 unmktime(now, 0,
719                          &t->tm_year, &t->tm_mon, &t->tm_mday,
720                          &t->tm_hour, &t->tm_min, &t->tm_sec);
721 #if 0
722                 printk("mac_hwclk: read %04d-%02d-%-2d %02d:%02d:%02d\n",
723                         t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
724                         t->tm_hour, t->tm_min, t->tm_sec);
725 #endif
726         } else { /* write */
727 #if 0
728                 printk("mac_hwclk: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
729                         t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
730                         t->tm_hour, t->tm_min, t->tm_sec);
731 #endif
732 
733                 now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
734                              t->tm_hour, t->tm_min, t->tm_sec);
735 
736                 switch (macintosh_config->adb_type) {
737                 case MAC_ADB_II:
738                 case MAC_ADB_IOP:
739                         via_write_time(now);
740                         break;
741                 case MAC_ADB_CUDA:
742                         cuda_write_time(now);
743                         break;
744                 case MAC_ADB_PB1:
745                 case MAC_ADB_PB2:
746                         pmu_write_time(now);
747                         break;
748                 case MAC_ADB_IISI:
749                         maciisi_write_time(now);
750                 }
751         }
752         return 0;
753 }
754 
755 /*
756  * Set minutes/seconds in the hardware clock
757  */
758 
759 int mac_set_clock_mmss (unsigned long nowtime)
760 {
761         struct rtc_time now;
762 
763         mac_hwclk(0, &now);
764         now.tm_sec = nowtime % 60;
765         now.tm_min = (nowtime / 60) % 60;
766         mac_hwclk(1, &now);
767 
768         return 0;
769 }
770 

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