[mirror_ubuntu-artful-kernel.git] / arch / m68k / mac / misc.c

/*
 * Miscellaneous Mac68K-specific stuff
 */

#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/rtc.h>
#include <linux/mm.h>

#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/pmu.h>

#include <linux/uaccess.h>
#include <asm/io.h>
#include <asm/segment.h>
#include <asm/setup.h>
#include <asm/macintosh.h>
#include <asm/mac_via.h>
#include <asm/mac_oss.h>

#include <asm/machdep.h>

/* Offset between Unix time (1970-based) and Mac time (1904-based) */

#define RTC_OFFSET 2082844800

static void (*rom_reset)(void);

#ifdef CONFIG_ADB_CUDA
static long cuda_read_time(void)
{
	struct adb_request req;
	long time;

	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
		return 0;
	while (!req.complete)
		cuda_poll();

	time = (req.reply[3] << 24) | (req.reply[4] << 16)
		| (req.reply[5] << 8) | req.reply[6];
	return time - RTC_OFFSET;
}

static void cuda_write_time(long data)
{
	struct adb_request req;
	data += RTC_OFFSET;
	if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
			(data >> 24) & 0xFF, (data >> 16) & 0xFF,
			(data >> 8) & 0xFF, data & 0xFF) < 0)
		return;
	while (!req.complete)
		cuda_poll();
}

static __u8 cuda_read_pram(int offset)
{
	struct adb_request req;
	if (cuda_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
			(offset >> 8) & 0xFF, offset & 0xFF) < 0)
		return 0;
	while (!req.complete)
		cuda_poll();
	return req.reply[3];
}

static void cuda_write_pram(int offset, __u8 data)
{
	struct adb_request req;
	if (cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
			(offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
		return;
	while (!req.complete)
		cuda_poll();
}
#else
#define cuda_read_time() 0
#define cuda_write_time(n)
#define cuda_read_pram NULL
#define cuda_write_pram NULL
#endif

#ifdef CONFIG_ADB_PMU68K
static long pmu_read_time(void)
{
	struct adb_request req;
	long time;

	if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
		return 0;
	while (!req.complete)
		pmu_poll();

	time = (req.reply[1] << 24) | (req.reply[2] << 16)
		| (req.reply[3] << 8) | req.reply[4];
	return time - RTC_OFFSET;
}

static void pmu_write_time(long data)
{
	struct adb_request req;
	data += RTC_OFFSET;
	if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
			(data >> 24) & 0xFF, (data >> 16) & 0xFF,
			(data >> 8) & 0xFF, data & 0xFF) < 0)
		return;
	while (!req.complete)
		pmu_poll();
}

static __u8 pmu_read_pram(int offset)
{
	struct adb_request req;
	if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM,
			(offset >> 8) & 0xFF, offset & 0xFF) < 0)
		return 0;
	while (!req.complete)
		pmu_poll();
	return req.reply[3];
}

static void pmu_write_pram(int offset, __u8 data)
{
	struct adb_request req;
	if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM,
			(offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
		return;
	while (!req.complete)
		pmu_poll();
}
#else
#define pmu_read_time() 0
#define pmu_write_time(n)
#define pmu_read_pram NULL
#define pmu_write_pram NULL
#endif

#if 0 /* def CONFIG_ADB_MACIISI */
extern int maciisi_request(struct adb_request *req,
			void (*done)(struct adb_request *), int nbytes, ...);

static long maciisi_read_time(void)
{
	struct adb_request req;
	long time;

	if (maciisi_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME))
		return 0;

	time = (req.reply[3] << 24) | (req.reply[4] << 16)
		| (req.reply[5] << 8) | req.reply[6];
	return time - RTC_OFFSET;
}

static void maciisi_write_time(long data)
{
	struct adb_request req;
	data += RTC_OFFSET;
	maciisi_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
			(data >> 24) & 0xFF, (data >> 16) & 0xFF,
			(data >> 8) & 0xFF, data & 0xFF);
}

static __u8 maciisi_read_pram(int offset)
{
	struct adb_request req;
	if (maciisi_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
			(offset >> 8) & 0xFF, offset & 0xFF))
		return 0;
	return req.reply[3];
}

static void maciisi_write_pram(int offset, __u8 data)
{
	struct adb_request req;
	maciisi_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
			(offset >> 8) & 0xFF, offset & 0xFF, data);
}
#else
#define maciisi_read_time() 0
#define maciisi_write_time(n)
#define maciisi_read_pram NULL
#define maciisi_write_pram NULL
#endif

/*
 * VIA PRAM/RTC access routines
 *
 * Must be called with interrupts disabled and
 * the RTC should be enabled.
 */

static __u8 via_pram_readbyte(void)
{
	int	i,reg;
	__u8	data;

	reg = via1[vBufB] & ~VIA1B_vRTCClk;

	/* Set the RTC data line to be an input. */

	via1[vDirB] &= ~VIA1B_vRTCData;

	/* The bits of the byte come out in MSB order */

	data = 0;
	for (i = 0 ; i < 8 ; i++) {
		via1[vBufB] = reg;
		via1[vBufB] = reg | VIA1B_vRTCClk;
		data = (data << 1) | (via1[vBufB] & VIA1B_vRTCData);
	}

	/* Return RTC data line to output state */

	via1[vDirB] |= VIA1B_vRTCData;

	return data;
}

static void via_pram_writebyte(__u8 data)
{
	int	i,reg,bit;

	reg = via1[vBufB] & ~(VIA1B_vRTCClk | VIA1B_vRTCData);

	/* The bits of the byte go in in MSB order */

	for (i = 0 ; i < 8 ; i++) {
		bit = data & 0x80? 1 : 0;
		data <<= 1;
		via1[vBufB] = reg | bit;
		via1[vBufB] = reg | bit | VIA1B_vRTCClk;
	}
}

/*
 * Execute a VIA PRAM/RTC command. For read commands
 * data should point to a one-byte buffer for the
 * resulting data. For write commands it should point
 * to the data byte to for the command.
 *
 * This function disables all interrupts while running.
 */

static void via_pram_command(int command, __u8 *data)
{
	unsigned long flags;
	int	is_read;

	local_irq_save(flags);

	/* Enable the RTC and make sure the strobe line is high */

	via1[vBufB] = (via1[vBufB] | VIA1B_vRTCClk) & ~VIA1B_vRTCEnb;

	if (command & 0xFF00) {		/* extended (two-byte) command */
		via_pram_writebyte((command & 0xFF00) >> 8);
		via_pram_writebyte(command & 0xFF);
		is_read = command & 0x8000;
	} else {			/* one-byte command */
		via_pram_writebyte(command);
		is_read = command & 0x80;
	}
	if (is_read) {
		*data = via_pram_readbyte();
	} else {
		via_pram_writebyte(*data);
	}

	/* All done, disable the RTC */

	via1[vBufB] |= VIA1B_vRTCEnb;

	local_irq_restore(flags);
}

static __u8 via_read_pram(int offset)
{
	return 0;
}

static void via_write_pram(int offset, __u8 data)
{
}

/*
 * Return the current time in seconds since January 1, 1904.
 *
 * This only works on machines with the VIA-based PRAM/RTC, which
 * is basically any machine with Mac II-style ADB.
 */

static long via_read_time(void)
{
	union {
		__u8 cdata[4];
		long idata;
	} result, last_result;
	int count = 1;

	via_pram_command(0x81, &last_result.cdata[3]);
	via_pram_command(0x85, &last_result.cdata[2]);
	via_pram_command(0x89, &last_result.cdata[1]);
	via_pram_command(0x8D, &last_result.cdata[0]);

	/*
	 * The NetBSD guys say to loop until you get the same reading
	 * twice in a row.
	 */

	while (1) {
		via_pram_command(0x81, &result.cdata[3]);
		via_pram_command(0x85, &result.cdata[2]);
		via_pram_command(0x89, &result.cdata[1]);
		via_pram_command(0x8D, &result.cdata[0]);

		if (result.idata == last_result.idata)
			return result.idata - RTC_OFFSET;

		if (++count > 10)
			break;

		last_result.idata = result.idata;
	}

	pr_err("via_read_time: failed to read a stable value; "
	       "got 0x%08lx then 0x%08lx\n",
	       last_result.idata, result.idata);

	return 0;
}

/*
 * Set the current time to a number of seconds since January 1, 1904.
 *
 * This only works on machines with the VIA-based PRAM/RTC, which
 * is basically any machine with Mac II-style ADB.
 */

static void via_write_time(long time)
{
	union {
		__u8  cdata[4];
		long  idata;
	} data;
	__u8	temp;

	/* Clear the write protect bit */

	temp = 0x55;
	via_pram_command(0x35, &temp);

	data.idata = time + RTC_OFFSET;
	via_pram_command(0x01, &data.cdata[3]);
	via_pram_command(0x05, &data.cdata[2]);
	via_pram_command(0x09, &data.cdata[1]);
	via_pram_command(0x0D, &data.cdata[0]);

	/* Set the write protect bit */

	temp = 0xD5;
	via_pram_command(0x35, &temp);
}

static void via_shutdown(void)
{
	if (rbv_present) {
		via2[rBufB] &= ~0x04;
	} else {
		/* Direction of vDirB is output */
		via2[vDirB] |= 0x04;
		/* Send a value of 0 on that line */
		via2[vBufB] &= ~0x04;
		mdelay(1000);
	}
}

/*
 * FIXME: not sure how this is supposed to work exactly...
 */

static void oss_shutdown(void)
{
	oss->rom_ctrl = OSS_POWEROFF;
}

#ifdef CONFIG_ADB_CUDA

static void cuda_restart(void)
{
	struct adb_request req;
	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM) < 0)
		return;
	while (!req.complete)
		cuda_poll();
}

static void cuda_shutdown(void)
{
	struct adb_request req;
	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN) < 0)
		return;
	while (!req.complete)
		cuda_poll();
}

#endif /* CONFIG_ADB_CUDA */

#ifdef CONFIG_ADB_PMU68K

void pmu_restart(void)
{
	struct adb_request req;
	if (pmu_request(&req, NULL,
			2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
		return;
	while (!req.complete)
		pmu_poll();
	if (pmu_request(&req, NULL, 1, PMU_RESET) < 0)
		return;
	while (!req.complete)
		pmu_poll();
}

void pmu_shutdown(void)
{
	struct adb_request req;
	if (pmu_request(&req, NULL,
			2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
		return;
	while (!req.complete)
		pmu_poll();
	if (pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 'M', 'A', 'T', 'T') < 0)
		return;
	while (!req.complete)
		pmu_poll();
}

#endif

/*
 *-------------------------------------------------------------------
 * Below this point are the generic routines; they'll dispatch to the
 * correct routine for the hardware on which we're running.
 *-------------------------------------------------------------------
 */

void mac_pram_read(int offset, __u8 *buffer, int len)
{
	__u8 (*func)(int);
	int i;

	switch(macintosh_config->adb_type) {
	case MAC_ADB_IISI:
		func = maciisi_read_pram; break;
	case MAC_ADB_PB1:
	case MAC_ADB_PB2:
		func = pmu_read_pram; break;
	case MAC_ADB_CUDA:
		func = cuda_read_pram; break;
	default:
		func = via_read_pram;
	}
	if (!func)
		return;
	for (i = 0 ; i < len ; i++) {
		buffer[i] = (*func)(offset++);
	}
}

void mac_pram_write(int offset, __u8 *buffer, int len)
{
	void (*func)(int, __u8);
	int i;

	switch(macintosh_config->adb_type) {
	case MAC_ADB_IISI:
		func = maciisi_write_pram; break;
	case MAC_ADB_PB1:
	case MAC_ADB_PB2:
		func = pmu_write_pram; break;
	case MAC_ADB_CUDA:
		func = cuda_write_pram; break;
	default:
		func = via_write_pram;
	}
	if (!func)
		return;
	for (i = 0 ; i < len ; i++) {
		(*func)(offset++, buffer[i]);
	}
}

void mac_poweroff(void)
{
	/*
	 * MAC_ADB_IISI may need to be moved up here if it doesn't actually
	 * work using the ADB packet method.  --David Kilzer
	 */

	if (oss_present) {
		oss_shutdown();
	} else if (macintosh_config->adb_type == MAC_ADB_II) {
		via_shutdown();
#ifdef CONFIG_ADB_CUDA
	} else if (macintosh_config->adb_type == MAC_ADB_CUDA) {
		cuda_shutdown();
#endif
#ifdef CONFIG_ADB_PMU68K
	} else if (macintosh_config->adb_type == MAC_ADB_PB1
		|| macintosh_config->adb_type == MAC_ADB_PB2) {
		pmu_shutdown();
#endif
	}
	local_irq_enable();
	printk("It is now safe to turn off your Macintosh.\n");
	while(1);
}

void mac_reset(void)
{
	if (macintosh_config->adb_type == MAC_ADB_II) {
		unsigned long flags;

		/* need ROMBASE in booter */
		/* indeed, plus need to MAP THE ROM !! */

		if (mac_bi_data.rombase == 0)
			mac_bi_data.rombase = 0x40800000;

		/* works on some */
		rom_reset = (void *) (mac_bi_data.rombase + 0xa);

		if (macintosh_config->ident == MAC_MODEL_SE30) {
			/*
			 * MSch: Machines known to crash on ROM reset ...
			 */
		} else {
			local_irq_save(flags);

			rom_reset();

			local_irq_restore(flags);
		}
#ifdef CONFIG_ADB_CUDA
	} else if (macintosh_config->adb_type == MAC_ADB_CUDA) {
		cuda_restart();
#endif
#ifdef CONFIG_ADB_PMU68K
	} else if (macintosh_config->adb_type == MAC_ADB_PB1
		|| macintosh_config->adb_type == MAC_ADB_PB2) {
		pmu_restart();
#endif
	} else if (CPU_IS_030) {

		/* 030-specific reset routine.  The idea is general, but the
		 * specific registers to reset are '030-specific.  Until I
		 * have a non-030 machine, I can't test anything else.
		 *  -- C. Scott Ananian <cananian@alumni.princeton.edu>
		 */

		unsigned long rombase = 0x40000000;

		/* make a 1-to-1 mapping, using the transparent tran. reg. */
		unsigned long virt = (unsigned long) mac_reset;
		unsigned long phys = virt_to_phys(mac_reset);
		unsigned long addr = (phys&0xFF000000)|0x8777;
		unsigned long offset = phys-virt;
		local_irq_disable(); /* lets not screw this up, ok? */
		__asm__ __volatile__(".chip 68030\n\t"
				     "pmove %0,%/tt0\n\t"
				     ".chip 68k"
				     : : "m" (addr));
		/* Now jump to physical address so we can disable MMU */
		__asm__ __volatile__(
                    ".chip 68030\n\t"
		    "lea %/pc@(1f),%/a0\n\t"
		    "addl %0,%/a0\n\t"/* fixup target address and stack ptr */
		    "addl %0,%/sp\n\t"
		    "pflusha\n\t"
		    "jmp %/a0@\n\t" /* jump into physical memory */
		    "0:.long 0\n\t" /* a constant zero. */
		    /* OK.  Now reset everything and jump to reset vector. */
		    "1:\n\t"
		    "lea %/pc@(0b),%/a0\n\t"
		    "pmove %/a0@, %/tc\n\t" /* disable mmu */
		    "pmove %/a0@, %/tt0\n\t" /* disable tt0 */
		    "pmove %/a0@, %/tt1\n\t" /* disable tt1 */
		    "movel #0, %/a0\n\t"
		    "movec %/a0, %/vbr\n\t" /* clear vector base register */
		    "movec %/a0, %/cacr\n\t" /* disable caches */
		    "movel #0x0808,%/a0\n\t"
		    "movec %/a0, %/cacr\n\t" /* flush i&d caches */
		    "movew #0x2700,%/sr\n\t" /* set up status register */
		    "movel %1@(0x0),%/a0\n\t"/* load interrupt stack pointer */
		    "movec %/a0, %/isp\n\t"
		    "movel %1@(0x4),%/a0\n\t" /* load reset vector */
		    "reset\n\t" /* reset external devices */
		    "jmp %/a0@\n\t" /* jump to the reset vector */
		    ".chip 68k"
		    : : "r" (offset), "a" (rombase) : "a0");
	}

	/* should never get here */
	local_irq_enable();
	printk ("Restart failed.  Please restart manually.\n");
	while(1);
}

/*
 * This function translates seconds since 1970 into a proper date.
 *
 * Algorithm cribbed from glibc2.1, __offtime().
 */
#define SECS_PER_MINUTE (60)
#define SECS_PER_HOUR  (SECS_PER_MINUTE * 60)
#define SECS_PER_DAY   (SECS_PER_HOUR * 24)

static void unmktime(unsigned long time, long offset,
		     int *yearp, int *monp, int *dayp,
		     int *hourp, int *minp, int *secp)
{
        /* How many days come before each month (0-12).  */
	static const unsigned short int __mon_yday[2][13] =
	{
		/* Normal years.  */
		{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
		/* Leap years.  */
		{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
	};
	long int days, rem, y, wday, yday;
	const unsigned short int *ip;

	days = time / SECS_PER_DAY;
	rem = time % SECS_PER_DAY;
	rem += offset;
	while (rem < 0) {
		rem += SECS_PER_DAY;
		--days;
	}
	while (rem >= SECS_PER_DAY) {
		rem -= SECS_PER_DAY;
		++days;
	}
	*hourp = rem / SECS_PER_HOUR;
	rem %= SECS_PER_HOUR;
	*minp = rem / SECS_PER_MINUTE;
	*secp = rem % SECS_PER_MINUTE;
	/* January 1, 1970 was a Thursday. */
	wday = (4 + days) % 7; /* Day in the week. Not currently used */
	if (wday < 0) wday += 7;
	y = 1970;

#define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
#define __isleap(year)	\
  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))

	while (days < 0 || days >= (__isleap (y) ? 366 : 365))
	{
		/* Guess a corrected year, assuming 365 days per year.  */
		long int yg = y + days / 365 - (days % 365 < 0);

		/* Adjust DAYS and Y to match the guessed year.  */
		days -= ((yg - y) * 365
			 + LEAPS_THRU_END_OF (yg - 1)
			 - LEAPS_THRU_END_OF (y - 1));
		y = yg;
	}
	*yearp = y - 1900;
	yday = days; /* day in the year.  Not currently used. */
	ip = __mon_yday[__isleap(y)];
	for (y = 11; days < (long int) ip[y]; --y)
		continue;
	days -= ip[y];
	*monp = y;
	*dayp = days + 1; /* day in the month */
	return;
}

/*
 * Read/write the hardware clock.
 */

int mac_hwclk(int op, struct rtc_time *t)
{
	unsigned long now;

	if (!op) { /* read */
		switch (macintosh_config->adb_type) {
		case MAC_ADB_II:
		case MAC_ADB_IOP:
			now = via_read_time();
			break;
		case MAC_ADB_IISI:
			now = maciisi_read_time();
			break;
		case MAC_ADB_PB1:
		case MAC_ADB_PB2:
			now = pmu_read_time();
			break;
		case MAC_ADB_CUDA:
			now = cuda_read_time();
			break;
		default:
			now = 0;
		}

		t->tm_wday = 0;
		unmktime(now, 0,
			 &t->tm_year, &t->tm_mon, &t->tm_mday,
			 &t->tm_hour, &t->tm_min, &t->tm_sec);
#if 0
		printk("mac_hwclk: read %04d-%02d-%-2d %02d:%02d:%02d\n",
			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
			t->tm_hour, t->tm_min, t->tm_sec);
#endif
	} else { /* write */
#if 0
		printk("mac_hwclk: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
			t->tm_hour, t->tm_min, t->tm_sec);
#endif

		now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
			     t->tm_hour, t->tm_min, t->tm_sec);

		switch (macintosh_config->adb_type) {
		case MAC_ADB_II:
		case MAC_ADB_IOP:
			via_write_time(now);
			break;
		case MAC_ADB_CUDA:
			cuda_write_time(now);
			break;
		case MAC_ADB_PB1:
		case MAC_ADB_PB2:
			pmu_write_time(now);
			break;
		case MAC_ADB_IISI:
			maciisi_write_time(now);
		}
	}
	return 0;
}

/*
 * Set minutes/seconds in the hardware clock
 */

int mac_set_clock_mmss (unsigned long nowtime)
{
	struct rtc_time now;

	mac_hwclk(0, &now);
	now.tm_sec = nowtime % 60;
	now.tm_min = (nowtime / 60) % 60;
	mac_hwclk(1, &now);

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Miscellaneous Mac68K-specific stuff
	3	*/
	4
1da177e4 LT	5	#include <linux/types.h>
1da177e4 LT	6	#include <linux/errno.h>
1da177e4 LT	7	#include <linux/kernel.h>
	8	#include <linux/delay.h>
	9	#include <linux/sched.h>
1da177e4 LT	10	#include <linux/time.h>
	11	#include <linux/rtc.h>
	12	#include <linux/mm.h>
	13
	14	#include <linux/adb.h>
	15	#include <linux/cuda.h>
	16	#include <linux/pmu.h>
	17
7c0f6ba6	18	#include <linux/uaccess.h>
1da177e4	19	#include <asm/io.h>
1da177e4 LT	20	#include <asm/segment.h>
	21	#include <asm/setup.h>
	22	#include <asm/macintosh.h>
	23	#include <asm/mac_via.h>
	24	#include <asm/mac_oss.h>
	25
1da177e4 LT	26	#include <asm/machdep.h>
	27
	28	/* Offset between Unix time (1970-based) and Mac time (1904-based) */
	29
	30	#define RTC_OFFSET 2082844800
	31
1da177e4 LT	32	static void (*rom_reset)(void);
1da177e4 LT	33
3272244c AV	34	#ifdef CONFIG_ADB_CUDA
3272244c AV	35	static long cuda_read_time(void)
1da177e4	36	{
3272244c	37	struct adb_request req;
1da177e4 LT	38	long time;
1da177e4 LT	39
3272244c AV	40	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
	41	return 0;
	42	while (!req.complete)
	43	cuda_poll();
1da177e4 LT	44
	45	time = (req.reply[3] << 24) \| (req.reply[4] << 16)
	46	\| (req.reply[5] << 8) \| req.reply[6];
	47	return time - RTC_OFFSET;
	48	}
	49
3272244c AV	50	static void cuda_write_time(long data)
	51	{
	52	struct adb_request req;
	53	data += RTC_OFFSET;
	54	if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
	55	(data >> 24) & 0xFF, (data >> 16) & 0xFF,
	56	(data >> 8) & 0xFF, data & 0xFF) < 0)
	57	return;
	58	while (!req.complete)
	59	cuda_poll();
	60	}
1da177e4	61
3272244c	62	static __u8 cuda_read_pram(int offset)
1da177e4	63	{
3272244c AV	64	struct adb_request req;
	65	if (cuda_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
	66	(offset >> 8) & 0xFF, offset & 0xFF) < 0)
	67	return 0;
	68	while (!req.complete)
	69	cuda_poll();
	70	return req.reply[3];
	71	}
1da177e4	72
3272244c AV	73	static void cuda_write_pram(int offset, __u8 data)
	74	{
	75	struct adb_request req;
	76	if (cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
	77	(offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
	78	return;
	79	while (!req.complete)
	80	cuda_poll();
	81	}
	82	#else
	83	#define cuda_read_time() 0
	84	#define cuda_write_time(n)
	85	#define cuda_read_pram NULL
	86	#define cuda_write_pram NULL
	87	#endif
	88
d643e2d2	89	#ifdef CONFIG_ADB_PMU68K
3272244c AV	90	static long pmu_read_time(void)
	91	{
	92	struct adb_request req;
	93	long time;
	94
	95	if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
	96	return 0;
	97	while (!req.complete)
	98	pmu_poll();
1da177e4	99
d643e2d2 FT	100	time = (req.reply[1] << 24) \| (req.reply[2] << 16)
d643e2d2 FT	101	\| (req.reply[3] << 8) \| req.reply[4];
3272244c AV	102	return time - RTC_OFFSET;
	103	}
	104
	105	static void pmu_write_time(long data)
	106	{
	107	struct adb_request req;
	108	data += RTC_OFFSET;
	109	if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
1da177e4	110	(data >> 24) & 0xFF, (data >> 16) & 0xFF,
3272244c AV	111	(data >> 8) & 0xFF, data & 0xFF) < 0)
	112	return;
	113	while (!req.complete)
	114	pmu_poll();
1da177e4 LT	115	}
1da177e4 LT	116
3272244c AV	117	static __u8 pmu_read_pram(int offset)
	118	{
	119	struct adb_request req;
	120	if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM,
	121	(offset >> 8) & 0xFF, offset & 0xFF) < 0)
	122	return 0;
	123	while (!req.complete)
	124	pmu_poll();
	125	return req.reply[3];
	126	}
1da177e4	127
3272244c	128	static void pmu_write_pram(int offset, __u8 data)
1da177e4	129	{
3272244c AV	130	struct adb_request req;
	131	if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM,
	132	(offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
	133	return;
	134	while (!req.complete)
	135	pmu_poll();
	136	}
	137	#else
	138	#define pmu_read_time() 0
	139	#define pmu_write_time(n)
	140	#define pmu_read_pram NULL
	141	#define pmu_write_pram NULL
	142	#endif
1da177e4	143
40f7f9c1	144	#if 0 /* def CONFIG_ADB_MACIISI */
3272244c AV	145	extern int maciisi_request(struct adb_request *req,
	146	void (done)(struct adb_request ), int nbytes, ...);
	147
	148	static long maciisi_read_time(void)
	149	{
	150	struct adb_request req;
	151	long time;
	152
	153	if (maciisi_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME))
	154	return 0;
	155
	156	time = (req.reply[3] << 24) \| (req.reply[4] << 16)
	157	\| (req.reply[5] << 8) \| req.reply[6];
	158	return time - RTC_OFFSET;
1da177e4 LT	159	}
1da177e4 LT	160
3272244c AV	161	static void maciisi_write_time(long data)
	162	{
	163	struct adb_request req;
	164	data += RTC_OFFSET;
	165	maciisi_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
	166	(data >> 24) & 0xFF, (data >> 16) & 0xFF,
	167	(data >> 8) & 0xFF, data & 0xFF);
	168	}
1da177e4	169
3272244c	170	static __u8 maciisi_read_pram(int offset)
1da177e4	171	{
3272244c AV	172	struct adb_request req;
	173	if (maciisi_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
	174	(offset >> 8) & 0xFF, offset & 0xFF))
	175	return 0;
	176	return req.reply[3];
	177	}
1da177e4	178
3272244c AV	179	static void maciisi_write_pram(int offset, __u8 data)
	180	{
	181	struct adb_request req;
	182	maciisi_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
	183	(offset >> 8) & 0xFF, offset & 0xFF, data);
1da177e4	184	}
3272244c AV	185	#else
	186	#define maciisi_read_time() 0
	187	#define maciisi_write_time(n)
	188	#define maciisi_read_pram NULL
	189	#define maciisi_write_pram NULL
	190	#endif
1da177e4 LT	191
	192	/*
	193	* VIA PRAM/RTC access routines
	194	*
	195	* Must be called with interrupts disabled and
	196	* the RTC should be enabled.
	197	*/
	198
	199	static __u8 via_pram_readbyte(void)
	200	{
	201	int i,reg;
	202	__u8 data;
	203
	204	reg = via1[vBufB] & ~VIA1B_vRTCClk;
	205
	206	/* Set the RTC data line to be an input. */
	207
	208	via1[vDirB] &= ~VIA1B_vRTCData;
	209
	210	/* The bits of the byte come out in MSB order */
	211
	212	data = 0;
	213	for (i = 0 ; i < 8 ; i++) {
	214	via1[vBufB] = reg;
	215	via1[vBufB] = reg \| VIA1B_vRTCClk;
	216	data = (data << 1) \| (via1[vBufB] & VIA1B_vRTCData);
	217	}
	218
	219	/* Return RTC data line to output state */
	220
	221	via1[vDirB] \|= VIA1B_vRTCData;
	222
	223	return data;
	224	}
	225
	226	static void via_pram_writebyte(__u8 data)
	227	{
	228	int i,reg,bit;
	229
	230	reg = via1[vBufB] & ~(VIA1B_vRTCClk \| VIA1B_vRTCData);
	231
	232	/* The bits of the byte go in in MSB order */
	233
	234	for (i = 0 ; i < 8 ; i++) {
	235	bit = data & 0x80? 1 : 0;
	236	data <<= 1;
	237	via1[vBufB] = reg \| bit;
	238	via1[vBufB] = reg \| bit \| VIA1B_vRTCClk;
	239	}
	240	}
	241
	242	/*
	243	* Execute a VIA PRAM/RTC command. For read commands
	244	* data should point to a one-byte buffer for the
	245	* resulting data. For write commands it should point
	246	* to the data byte to for the command.
	247	*
	248	* This function disables all interrupts while running.
	249	*/
	250
	251	static void via_pram_command(int command, __u8 *data)
	252	{
	253	unsigned long flags;
	254	int is_read;
255
256	local_irq_save(flags);
257
258	/* Enable the RTC and make sure the strobe line is high */
259
260	via1[vBufB] = (via1[vBufB] \| VIA1B_vRTCClk) & ~VIA1B_vRTCEnb;
261
262	if (command & 0xFF00) { /* extended (two-byte) command */
263	via_pram_writebyte((command & 0xFF00) >> 8);
264	via_pram_writebyte(command & 0xFF);
265	is_read = command & 0x8000;
266	} else { /* one-byte command */
267	via_pram_writebyte(command);
268	is_read = command & 0x80;
269	}
270	if (is_read) {
271	*data = via_pram_readbyte();
272	} else {
273	via_pram_writebyte(*data);
274	}
275
276	/* All done, disable the RTC */
277
278	via1[vBufB] \|= VIA1B_vRTCEnb;
279
280	local_irq_restore(flags);
281	}
282
283	static __u8 via_read_pram(int offset)
284	{
285	return 0;
286	}
287
288	static void via_write_pram(int offset, __u8 data)
289	{
290	}
291
292	/*
293	* Return the current time in seconds since January 1, 1904.
294	*
295	* This only works on machines with the VIA-based PRAM/RTC, which
296	* is basically any machine with Mac II-style ADB.
297	*/
298
299	static long via_read_time(void)
300	{
301	union {
75a23850 FT	302	__u8 cdata[4];
75a23850 FT	303	long idata;
1da177e4	304	} result, last_result;
75a23850 FT	305	int count = 1;
	306
	307	via_pram_command(0x81, &last_result.cdata[3]);
	308	via_pram_command(0x85, &last_result.cdata[2]);
	309	via_pram_command(0x89, &last_result.cdata[1]);
	310	via_pram_command(0x8D, &last_result.cdata[0]);
1da177e4 LT	311
	312	/*
	313	* The NetBSD guys say to loop until you get the same reading
	314	* twice in a row.
	315	*/
	316
75a23850	317	while (1) {
1da177e4 LT	318	via_pram_command(0x81, &result.cdata[3]);
	319	via_pram_command(0x85, &result.cdata[2]);
	320	via_pram_command(0x89, &result.cdata[1]);
	321	via_pram_command(0x8D, &result.cdata[0]);
1da177e4	322
75a23850 FT	323	if (result.idata == last_result.idata)
	324	return result.idata - RTC_OFFSET;
	325
	326	if (++count > 10)
	327	break;
	328
	329	last_result.idata = result.idata;
	330	}
	331
	332	pr_err("via_read_time: failed to read a stable value; "
	333	"got 0x%08lx then 0x%08lx\n",
	334	last_result.idata, result.idata);
	335
	336	return 0;
1da177e4 LT	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
	346	static 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
	371	static 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
	388	static void oss_shutdown(void)
	389	{
	390	oss->rom_ctrl = OSS_POWEROFF;
	391	}
	392
	393	#ifdef CONFIG_ADB_CUDA
	394
	395	static void cuda_restart(void)
	396	{
3272244c AV	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();
1da177e4 LT	402	}
	403
	404	static void cuda_shutdown(void)
	405	{
3272244c AV	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();
1da177e4 LT	411	}
	412
	413	#endif /* CONFIG_ADB_CUDA */
	414
3272244c	415	#ifdef CONFIG_ADB_PMU68K
1da177e4 LT	416
	417	void pmu_restart(void)
	418	{
3272244c AV	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();
1da177e4 LT	429	}
	430
	431	void pmu_shutdown(void)
	432	{
3272244c AV	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();
1da177e4 LT	443	}
1da177e4 LT	444
3272244c	445	#endif
1da177e4 LT	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
	454	void mac_pram_read(int offset, __u8 *buffer, int len)
	455	{
3272244c	456	__u8 (*func)(int);
1da177e4 LT	457	int i;
1da177e4 LT	458
3272244c AV	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:
1da177e4 LT	468	func = via_read_pram;
1da177e4 LT	469	}
3272244c AV	470	if (!func)
3272244c AV	471	return;
1da177e4 LT	472	for (i = 0 ; i < len ; i++) {
	473	buffer[i] = (*func)(offset++);
	474	}
	475	}
	476
	477	void mac_pram_write(int offset, __u8 *buffer, int len)
	478	{
3272244c	479	void (*func)(int, __u8);
1da177e4 LT	480	int i;
1da177e4 LT	481
3272244c AV	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:
1da177e4 LT	491	func = via_write_pram;
1da177e4 LT	492	}
3272244c AV	493	if (!func)
3272244c AV	494	return;
1da177e4 LT	495	for (i = 0 ; i < len ; i++) {
	496	(*func)(offset++, buffer[i]);
	497	}
	498	}
	499
	500	void 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
3272244c	515	#ifdef CONFIG_ADB_PMU68K
1da177e4 LT	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
	526	void 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
3272244c	555	#ifdef CONFIG_ADB_PMU68K
1da177e4 LT	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);
77add9f3	573	unsigned long addr = (phys&0xFF000000)\|0x8777;
1da177e4 LT	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"
77add9f3	579	: : "m" (addr));
1da177e4 LT	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
	625	static 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
691	int mac_hwclk(int op, struct rtc_time *t)
692	{
693	unsigned long now;
694
695	if (!op) { /* read */
3272244c AV	696	switch (macintosh_config->adb_type) {
	697	case MAC_ADB_II:
	698	case MAC_ADB_IOP:
1da177e4	699	now = via_read_time();
3272244c AV	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:
1da177e4 LT	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);
40f7f9c1	719	#if 0
1da177e4	720	printk("mac_hwclk: read %04d-%02d-%-2d %02d:%02d:%02d\n",
40f7f9c1 FT	721	t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
	722	t->tm_hour, t->tm_min, t->tm_sec);
	723	#endif
1da177e4	724	} else { /* write */
40f7f9c1	725	#if 0
1da177e4	726	printk("mac_hwclk: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
40f7f9c1 FT	727	t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
	728	t->tm_hour, t->tm_min, t->tm_sec);
	729	#endif
1da177e4	730
1da177e4 LT	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
3272244c AV	734	switch (macintosh_config->adb_type) {
	735	case MAC_ADB_II:
	736	case MAC_ADB_IOP:
1da177e4	737	via_write_time(now);
3272244c AV	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);
1da177e4	748	}
1da177e4 LT	749	}
	750	return 0;
	751	}
	752
	753	/*
	754	* Set minutes/seconds in the hardware clock
	755	*/
	756
	757	int 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	}