[deliverable/linux.git] / arch / m68k / mac / misc.c

/*
 * Miscellaneous Mac68K-specific stuff
 */

#include <linux/config.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/miscdevice.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/slab.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 <asm/uaccess.h>
#include <asm/io.h>
#include <asm/rtc.h>
#include <asm/system.h>
#include <asm/segment.h>
#include <asm/setup.h>
#include <asm/macintosh.h>
#include <asm/mac_via.h>
#include <asm/mac_oss.h>

#define BOOTINFO_COMPAT_1_0
#include <asm/bootinfo.h>
#include <asm/machdep.h>

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

#define RTC_OFFSET 2082844800

extern struct mac_booter_data mac_bi_data;
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[0] << 24) | (req.reply[1] << 16)
		| (req.reply[2] << 8) | req.reply[3];
	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

#ifdef 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	ct;

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

	ct = 0;
	do {
		if (++ct > 10) {
			printk("via_read_time: couldn't get valid time, "
			       "last read = 0x%08lx and 0x%08lx\n",
			       last_result.idata, result.idata);
			break;
		}

		last_result.idata = result.idata;
		result.idata = 0;

		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]);
	} while (result.idata != last_result.idata);

	return result.idata - RTC_OFFSET;
}

/*
 * 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 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" ((phys&0xFF000000)|0x8777));
		/* 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);
		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);
	} else { /* write */
		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);

#if 0	/* it trashes my rtc */
		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);
		}
#endif
	}
	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
	5	#include <linux/config.h>
	6	#include <linux/types.h>
	7	#include <linux/errno.h>
	8	#include <linux/miscdevice.h>
	9	#include <linux/kernel.h>
	10	#include <linux/delay.h>
	11	#include <linux/sched.h>
	12	#include <linux/slab.h>
	13	#include <linux/time.h>
	14	#include <linux/rtc.h>
	15	#include <linux/mm.h>
	16
	17	#include <linux/adb.h>
	18	#include <linux/cuda.h>
	19	#include <linux/pmu.h>
	20
	21	#include <asm/uaccess.h>
	22	#include <asm/io.h>
	23	#include <asm/rtc.h>
	24	#include <asm/system.h>
	25	#include <asm/segment.h>
	26	#include <asm/setup.h>
	27	#include <asm/macintosh.h>
	28	#include <asm/mac_via.h>
	29	#include <asm/mac_oss.h>
	30
	31	#define BOOTINFO_COMPAT_1_0
	32	#include <asm/bootinfo.h>
	33	#include <asm/machdep.h>
	34
	35	/* Offset between Unix time (1970-based) and Mac time (1904-based) */
	36
	37	#define RTC_OFFSET 2082844800
	38
	39	extern struct mac_booter_data mac_bi_data;
	40	static void (*rom_reset)(void);
	41
3272244c AV	42	#ifdef CONFIG_ADB_CUDA
3272244c AV	43	static long cuda_read_time(void)
1da177e4	44	{
3272244c	45	struct adb_request req;
1da177e4 LT	46	long time;
1da177e4 LT	47
3272244c AV	48	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
	49	return 0;
	50	while (!req.complete)
	51	cuda_poll();
1da177e4 LT	52
	53	time = (req.reply[3] << 24) \| (req.reply[4] << 16)
	54	\| (req.reply[5] << 8) \| req.reply[6];
	55	return time - RTC_OFFSET;
	56	}
	57
3272244c AV	58	static void cuda_write_time(long data)
	59	{
	60	struct adb_request req;
	61	data += RTC_OFFSET;
	62	if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
	63	(data >> 24) & 0xFF, (data >> 16) & 0xFF,
	64	(data >> 8) & 0xFF, data & 0xFF) < 0)
	65	return;
	66	while (!req.complete)
	67	cuda_poll();
	68	}
1da177e4	69
3272244c	70	static __u8 cuda_read_pram(int offset)
1da177e4	71	{
3272244c AV	72	struct adb_request req;
	73	if (cuda_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
	74	(offset >> 8) & 0xFF, offset & 0xFF) < 0)
	75	return 0;
	76	while (!req.complete)
	77	cuda_poll();
	78	return req.reply[3];
	79	}
1da177e4	80
3272244c AV	81	static void cuda_write_pram(int offset, __u8 data)
	82	{
	83	struct adb_request req;
	84	if (cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
	85	(offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
	86	return;
	87	while (!req.complete)
	88	cuda_poll();
	89	}
	90	#else
	91	#define cuda_read_time() 0
	92	#define cuda_write_time(n)
	93	#define cuda_read_pram NULL
	94	#define cuda_write_pram NULL
	95	#endif
	96
	97	#ifdef CONFIG_ADB_PMU68K
	98	static long pmu_read_time(void)
	99	{
	100	struct adb_request req;
	101	long time;
	102
	103	if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
	104	return 0;
	105	while (!req.complete)
	106	pmu_poll();
1da177e4	107
3272244c AV	108	time = (req.reply[0] << 24) \| (req.reply[1] << 16)
	109	\| (req.reply[2] << 8) \| req.reply[3];
	110	return time - RTC_OFFSET;
	111	}
	112
	113	static void pmu_write_time(long data)
	114	{
	115	struct adb_request req;
	116	data += RTC_OFFSET;
	117	if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
1da177e4	118	(data >> 24) & 0xFF, (data >> 16) & 0xFF,
3272244c AV	119	(data >> 8) & 0xFF, data & 0xFF) < 0)
	120	return;
	121	while (!req.complete)
	122	pmu_poll();
1da177e4 LT	123	}
1da177e4 LT	124
3272244c AV	125	static __u8 pmu_read_pram(int offset)
	126	{
	127	struct adb_request req;
	128	if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM,
	129	(offset >> 8) & 0xFF, offset & 0xFF) < 0)
	130	return 0;
	131	while (!req.complete)
	132	pmu_poll();
	133	return req.reply[3];
	134	}
1da177e4	135
3272244c	136	static void pmu_write_pram(int offset, __u8 data)
1da177e4	137	{
3272244c AV	138	struct adb_request req;
	139	if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM,
	140	(offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
	141	return;
	142	while (!req.complete)
	143	pmu_poll();
	144	}
	145	#else
	146	#define pmu_read_time() 0
	147	#define pmu_write_time(n)
	148	#define pmu_read_pram NULL
	149	#define pmu_write_pram NULL
	150	#endif
1da177e4	151
3272244c AV	152	#ifdef CONFIG_ADB_MACIISI
	153	extern int maciisi_request(struct adb_request *req,
	154	void (done)(struct adb_request ), int nbytes, ...);
	155
	156	static long maciisi_read_time(void)
	157	{
	158	struct adb_request req;
	159	long time;
	160
	161	if (maciisi_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME))
	162	return 0;
	163
	164	time = (req.reply[3] << 24) \| (req.reply[4] << 16)
	165	\| (req.reply[5] << 8) \| req.reply[6];
	166	return time - RTC_OFFSET;
1da177e4 LT	167	}
1da177e4 LT	168
3272244c AV	169	static void maciisi_write_time(long data)
	170	{
	171	struct adb_request req;
	172	data += RTC_OFFSET;
	173	maciisi_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
	174	(data >> 24) & 0xFF, (data >> 16) & 0xFF,
	175	(data >> 8) & 0xFF, data & 0xFF);
	176	}
1da177e4	177
3272244c	178	static __u8 maciisi_read_pram(int offset)
1da177e4	179	{
3272244c AV	180	struct adb_request req;
	181	if (maciisi_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
	182	(offset >> 8) & 0xFF, offset & 0xFF))
	183	return 0;
	184	return req.reply[3];
	185	}
1da177e4	186
3272244c AV	187	static void maciisi_write_pram(int offset, __u8 data)
	188	{
	189	struct adb_request req;
	190	maciisi_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
	191	(offset >> 8) & 0xFF, offset & 0xFF, data);
1da177e4	192	}
3272244c AV	193	#else
	194	#define maciisi_read_time() 0
	195	#define maciisi_write_time(n)
	196	#define maciisi_read_pram NULL
	197	#define maciisi_write_pram NULL
	198	#endif
1da177e4 LT	199
	200	/*
	201	* VIA PRAM/RTC access routines
	202	*
	203	* Must be called with interrupts disabled and
	204	* the RTC should be enabled.
	205	*/
	206
	207	static __u8 via_pram_readbyte(void)
	208	{
	209	int i,reg;
	210	__u8 data;
	211
	212	reg = via1[vBufB] & ~VIA1B_vRTCClk;
	213
	214	/* Set the RTC data line to be an input. */
	215
	216	via1[vDirB] &= ~VIA1B_vRTCData;
	217
	218	/* The bits of the byte come out in MSB order */
	219
	220	data = 0;
	221	for (i = 0 ; i < 8 ; i++) {
	222	via1[vBufB] = reg;
	223	via1[vBufB] = reg \| VIA1B_vRTCClk;
	224	data = (data << 1) \| (via1[vBufB] & VIA1B_vRTCData);
	225	}
	226
	227	/* Return RTC data line to output state */
	228
	229	via1[vDirB] \|= VIA1B_vRTCData;
	230
	231	return data;
	232	}
	233
	234	static void via_pram_writebyte(__u8 data)
	235	{
	236	int i,reg,bit;
	237
	238	reg = via1[vBufB] & ~(VIA1B_vRTCClk \| VIA1B_vRTCData);
	239
	240	/* The bits of the byte go in in MSB order */
	241
	242	for (i = 0 ; i < 8 ; i++) {
	243	bit = data & 0x80? 1 : 0;
	244	data <<= 1;
	245	via1[vBufB] = reg \| bit;
	246	via1[vBufB] = reg \| bit \| VIA1B_vRTCClk;
	247	}
	248	}
	249
	250	/*
	251	* Execute a VIA PRAM/RTC command. For read commands
	252	* data should point to a one-byte buffer for the
	253	* resulting data. For write commands it should point
	254	* to the data byte to for the command.
	255	*
	256	* This function disables all interrupts while running.
	257	*/
	258
	259	static void via_pram_command(int command, __u8 *data)
	260	{
	261	unsigned long flags;
	262	int is_read;
263
264	local_irq_save(flags);
265
266	/* Enable the RTC and make sure the strobe line is high */
267
268	via1[vBufB] = (via1[vBufB] \| VIA1B_vRTCClk) & ~VIA1B_vRTCEnb;
269
270	if (command & 0xFF00) { /* extended (two-byte) command */
271	via_pram_writebyte((command & 0xFF00) >> 8);
272	via_pram_writebyte(command & 0xFF);
273	is_read = command & 0x8000;
274	} else { /* one-byte command */
275	via_pram_writebyte(command);
276	is_read = command & 0x80;
277	}
278	if (is_read) {
279	*data = via_pram_readbyte();
280	} else {
281	via_pram_writebyte(*data);
282	}
283
284	/* All done, disable the RTC */
285
286	via1[vBufB] \|= VIA1B_vRTCEnb;
287
288	local_irq_restore(flags);
289	}
290
291	static __u8 via_read_pram(int offset)
292	{
293	return 0;
294	}
295
296	static void via_write_pram(int offset, __u8 data)
297	{
298	}
299
300	/*
301	* Return the current time in seconds since January 1, 1904.
302	*
303	* This only works on machines with the VIA-based PRAM/RTC, which
304	* is basically any machine with Mac II-style ADB.
305	*/
306
307	static long via_read_time(void)
308	{
309	union {
310	__u8 cdata[4];
311	long idata;
312	} result, last_result;
313	int ct;
314
315	/*
316	* The NetBSD guys say to loop until you get the same reading
317	* twice in a row.
318	*/
319
320	ct = 0;
321	do {
322	if (++ct > 10) {
323	printk("via_read_time: couldn't get valid time, "
324	"last read = 0x%08lx and 0x%08lx\n",
325	last_result.idata, result.idata);
326	break;
327	}
328
329	last_result.idata = result.idata;
330	result.idata = 0;
331
332	via_pram_command(0x81, &result.cdata[3]);
333	via_pram_command(0x85, &result.cdata[2]);
334	via_pram_command(0x89, &result.cdata[1]);
335	via_pram_command(0x8D, &result.cdata[0]);
336	} while (result.idata != last_result.idata);
337
338	return result.idata - RTC_OFFSET;
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	{
3272244c AV	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();
1da177e4 LT	404	}
	405
	406	static void cuda_shutdown(void)
	407	{
3272244c AV	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();
1da177e4 LT	413	}
	414
	415	#endif /* CONFIG_ADB_CUDA */
	416
3272244c	417	#ifdef CONFIG_ADB_PMU68K
1da177e4 LT	418
	419	void pmu_restart(void)
	420	{
3272244c AV	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();
1da177e4 LT	431	}
	432
	433	void pmu_shutdown(void)
	434	{
3272244c AV	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();
1da177e4 LT	445	}
1da177e4 LT	446
3272244c	447	#endif
1da177e4 LT	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	{
3272244c	458	__u8 (*func)(int);
1da177e4 LT	459	int i;
1da177e4 LT	460
3272244c AV	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:
1da177e4 LT	470	func = via_read_pram;
1da177e4 LT	471	}
3272244c AV	472	if (!func)
3272244c AV	473	return;
1da177e4 LT	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	{
3272244c	481	void (*func)(int, __u8);
1da177e4 LT	482	int i;
1da177e4 LT	483
3272244c AV	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:
1da177e4 LT	493	func = via_write_pram;
1da177e4 LT	494	}
3272244c AV	495	if (!func)
3272244c AV	496	return;
1da177e4 LT	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
3272244c	517	#ifdef CONFIG_ADB_PMU68K
1da177e4 LT	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
3272244c	557	#ifdef CONFIG_ADB_PMU68K
1da177e4 LT	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 offset = phys-virt;
	576	local_irq_disable(); /* lets not screw this up, ok? */
	577	__asm__ __volatile__(".chip 68030\n\t"
	578	"pmove %0,%/tt0\n\t"
	579	".chip 68k"
	580	: : "m" ((phys&0xFF000000)\|0x8777));
	581	/* Now jump to physical address so we can disable MMU */
	582	__asm__ __volatile__(
	583	".chip 68030\n\t"
	584	"lea %/pc@(1f),%/a0\n\t"
	585	"addl %0,%/a0\n\t"/* fixup target address and stack ptr */
	586	"addl %0,%/sp\n\t"
	587	"pflusha\n\t"
	588	"jmp %/a0@\n\t" /* jump into physical memory */
	589	"0:.long 0\n\t" /* a constant zero. */
	590	/* OK. Now reset everything and jump to reset vector. */
	591	"1:\n\t"
	592	"lea %/pc@(0b),%/a0\n\t"
	593	"pmove %/a0@, %/tc\n\t" /* disable mmu */
	594	"pmove %/a0@, %/tt0\n\t" /* disable tt0 */
	595	"pmove %/a0@, %/tt1\n\t" /* disable tt1 */
	596	"movel #0, %/a0\n\t"
	597	"movec %/a0, %/vbr\n\t" /* clear vector base register */
	598	"movec %/a0, %/cacr\n\t" /* disable caches */
	599	"movel #0x0808,%/a0\n\t"
	600	"movec %/a0, %/cacr\n\t" /* flush i&d caches */
	601	"movew #0x2700,%/sr\n\t" /* set up status register */
	602	"movel %1@(0x0),%/a0\n\t"/* load interrupt stack pointer */
	603	"movec %/a0, %/isp\n\t"
	604	"movel %1@(0x4),%/a0\n\t" /* load reset vector */
	605	"reset\n\t" /* reset external devices */
	606	"jmp %/a0@\n\t" /* jump to the reset vector */
	607	".chip 68k"
	608	: : "r" (offset), "a" (rombase) : "a0");
	609	}
	610
	611	/* should never get here */
	612	local_irq_enable();
	613	printk ("Restart failed. Please restart manually.\n");
	614	while(1);
	615	}
	616
	617	/*
	618	* This function translates seconds since 1970 into a proper date.
	619	*
	620	* Algorithm cribbed from glibc2.1, __offtime().
	621	*/
622	#define SECS_PER_MINUTE (60)
623	#define SECS_PER_HOUR (SECS_PER_MINUTE * 60)
624	#define SECS_PER_DAY (SECS_PER_HOUR * 24)
625
626	static void unmktime(unsigned long time, long offset,
627	int yearp, int monp, int *dayp,
628	int hourp, int minp, int *secp)
629	{
630	/* How many days come before each month (0-12). */
631	static const unsigned short int __mon_yday[2][13] =
632	{
633	/* Normal years. */
634	{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
635	/* Leap years. */
636	{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
637	};
638	long int days, rem, y, wday, yday;
639	const unsigned short int *ip;
640
641	days = time / SECS_PER_DAY;
642	rem = time % SECS_PER_DAY;
643	rem += offset;
644	while (rem < 0) {
645	rem += SECS_PER_DAY;
646	--days;
647	}
648	while (rem >= SECS_PER_DAY) {
649	rem -= SECS_PER_DAY;
650	++days;
651	}
652	*hourp = rem / SECS_PER_HOUR;
653	rem %= SECS_PER_HOUR;
654	*minp = rem / SECS_PER_MINUTE;
655	*secp = rem % SECS_PER_MINUTE;
656	/* January 1, 1970 was a Thursday. */
657	wday = (4 + days) % 7; /* Day in the week. Not currently used */
658	if (wday < 0) wday += 7;
659	y = 1970;
660
661	#define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
662	#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
663	#define __isleap(year) \
664	((year) % 4 == 0 && ((year) % 100 != 0 \|\| (year) % 400 == 0))
665
666	while (days < 0 \|\| days >= (__isleap (y) ? 366 : 365))
667	{
668	/* Guess a corrected year, assuming 365 days per year. */
669	long int yg = y + days / 365 - (days % 365 < 0);
670
671	/* Adjust DAYS and Y to match the guessed year. */
672	days -= ((yg - y) * 365
673	+ LEAPS_THRU_END_OF (yg - 1)
674	- LEAPS_THRU_END_OF (y - 1));
675	y = yg;
676	}
677	*yearp = y - 1900;
678	yday = days; /* day in the year. Not currently used. */
679	ip = __mon_yday[__isleap(y)];
680	for (y = 11; days < (long int) ip[y]; --y)
681	continue;
682	days -= ip[y];
683	*monp = y;
684	dayp = days + 1; / day in the month */
685	return;
686	}
687
688	/*
689	* Read/write the hardware clock.
690	*/
691
692	int mac_hwclk(int op, struct rtc_time *t)
693	{
694	unsigned long now;
695
696	if (!op) { /* read */
3272244c AV	697	switch (macintosh_config->adb_type) {
	698	case MAC_ADB_II:
	699	case MAC_ADB_IOP:
1da177e4	700	now = via_read_time();
3272244c AV	701	break;
	702	case MAC_ADB_IISI:
	703	now = maciisi_read_time();
	704	break;
	705	case MAC_ADB_PB1:
	706	case MAC_ADB_PB2:
	707	now = pmu_read_time();
	708	break;
	709	case MAC_ADB_CUDA:
	710	now = cuda_read_time();
	711	break;
	712	default:
1da177e4 LT	713	now = 0;
	714	}
	715
	716	t->tm_wday = 0;
	717	unmktime(now, 0,
	718	&t->tm_year, &t->tm_mon, &t->tm_mday,
	719	&t->tm_hour, &t->tm_min, &t->tm_sec);
	720	printk("mac_hwclk: read %04d-%02d-%-2d %02d:%02d:%02d\n",
	721	t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
	722	} else { /* write */
	723	printk("mac_hwclk: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
	724	t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
	725
	726	#if 0 /* it trashes my rtc */
	727	now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
	728	t->tm_hour, t->tm_min, t->tm_sec);
	729
3272244c AV	730	switch (macintosh_config->adb_type) {
	731	case MAC_ADB_II:
	732	case MAC_ADB_IOP:
1da177e4	733	via_write_time(now);
3272244c AV	734	break;
	735	case MAC_ADB_CUDA:
	736	cuda_write_time(now);
	737	break;
	738	case MAC_ADB_PB1:
	739	case MAC_ADB_PB2:
	740	pmu_write_time(now);
	741	break;
	742	case MAC_ADB_IISI:
	743	maciisi_write_time(now);
1da177e4 LT	744	}
	745	#endif
	746	}
	747	return 0;
	748	}
	749
	750	/*
	751	* Set minutes/seconds in the hardware clock
	752	*/
	753
	754	int mac_set_clock_mmss (unsigned long nowtime)
	755	{
	756	struct rtc_time now;
	757
	758	mac_hwclk(0, &now);
	759	now.tm_sec = nowtime % 60;
	760	now.tm_min = (nowtime / 60) % 60;
	761	mac_hwclk(1, &now);
	762
	763	return 0;
	764	}