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-rw-r--r--arch/m68k/mac/misc.c140
1 files changed, 48 insertions, 92 deletions
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index c68054361615..1b083c500b9a 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -26,33 +26,38 @@
#include <asm/machdep.h>
-/* Offset between Unix time (1970-based) and Mac time (1904-based) */
+/*
+ * Offset between Unix time (1970-based) and Mac time (1904-based). Cuda and PMU
+ * times wrap in 2040. If we need to handle later times, the read_time functions
+ * need to be changed to interpret wrapped times as post-2040.
+ */
#define RTC_OFFSET 2082844800
static void (*rom_reset)(void);
#ifdef CONFIG_ADB_CUDA
-static long cuda_read_time(void)
+static time64_t cuda_read_time(void)
{
struct adb_request req;
- long time;
+ time64_t 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];
+ time = (u32)((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)
+static void cuda_write_time(time64_t time)
{
struct adb_request req;
+ u32 data = lower_32_bits(time + RTC_OFFSET);
- 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)
@@ -85,33 +90,32 @@ static void cuda_write_pram(int offset, __u8 data)
}
#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU68K
-static long pmu_read_time(void)
+#ifdef CONFIG_ADB_PMU
+static time64_t pmu_read_time(void)
{
struct adb_request req;
- long time;
+ time64_t time;
if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
return 0;
- while (!req.complete)
- pmu_poll();
+ pmu_wait_complete(&req);
+
+ time = (u32)((req.reply[0] << 24) | (req.reply[1] << 16) |
+ (req.reply[2] << 8) | req.reply[3]);
- 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)
+static void pmu_write_time(time64_t time)
{
struct adb_request req;
+ u32 data = lower_32_bits(time + RTC_OFFSET);
- 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();
+ pmu_wait_complete(&req);
}
static __u8 pmu_read_pram(int offset)
@@ -136,7 +140,7 @@ static void pmu_write_pram(int offset, __u8 data)
while (!req.complete)
pmu_poll();
}
-#endif /* CONFIG_ADB_PMU68K */
+#endif /* CONFIG_ADB_PMU */
/*
* VIA PRAM/RTC access routines
@@ -245,11 +249,11 @@ static void via_write_pram(int offset, __u8 data)
* is basically any machine with Mac II-style ADB.
*/
-static long via_read_time(void)
+static time64_t via_read_time(void)
{
union {
__u8 cdata[4];
- long idata;
+ __u32 idata;
} result, last_result;
int count = 1;
@@ -270,7 +274,7 @@ static long via_read_time(void)
via_pram_command(0x8D, &result.cdata[0]);
if (result.idata == last_result.idata)
- return result.idata - RTC_OFFSET;
+ return (time64_t)result.idata - RTC_OFFSET;
if (++count > 10)
break;
@@ -278,8 +282,8 @@ static long via_read_time(void)
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);
+ pr_err("%s: failed to read a stable value; got 0x%08x then 0x%08x\n",
+ __func__, last_result.idata, result.idata);
return 0;
}
@@ -291,11 +295,11 @@ static long via_read_time(void)
* is basically any machine with Mac II-style ADB.
*/
-static void via_write_time(long time)
+static void via_write_time(time64_t time)
{
union {
__u8 cdata[4];
- long idata;
+ __u32 idata;
} data;
__u8 temp;
@@ -304,7 +308,7 @@ static void via_write_time(long time)
temp = 0x55;
via_pram_command(0x35, &temp);
- data.idata = time + RTC_OFFSET;
+ data.idata = lower_32_bits(time + RTC_OFFSET);
via_pram_command(0x01, &data.cdata[3]);
via_pram_command(0x05, &data.cdata[2]);
via_pram_command(0x09, &data.cdata[1]);
@@ -367,38 +371,6 @@ static void cuda_shutdown(void)
}
#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
@@ -423,7 +395,7 @@ void mac_pram_read(int offset, __u8 *buffer, int len)
func = cuda_read_pram;
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
func = pmu_read_pram;
break;
@@ -453,7 +425,7 @@ void mac_pram_write(int offset, __u8 *buffer, int len)
func = cuda_write_pram;
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
func = pmu_write_pram;
break;
@@ -477,9 +449,8 @@ void mac_poweroff(void)
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) {
+#ifdef CONFIG_ADB_PMU
+ } else if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_shutdown();
#endif
}
@@ -519,9 +490,8 @@ void mac_reset(void)
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) {
+#ifdef CONFIG_ADB_PMU
+ } else if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_restart();
#endif
} else if (CPU_IS_030) {
@@ -585,12 +555,15 @@ void mac_reset(void)
* This function translates seconds since 1970 into a proper date.
*
* Algorithm cribbed from glibc2.1, __offtime().
+ *
+ * This is roughly same as rtc_time64_to_tm(), which we should probably
+ * use here, but it's only available when CONFIG_RTC_LIB is enabled.
*/
#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,
+static void unmktime(time64_t time, long offset,
int *yearp, int *monp, int *dayp,
int *hourp, int *minp, int *secp)
{
@@ -602,11 +575,10 @@ static void unmktime(unsigned long time, long offset,
/* Leap years. */
{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
};
- long int days, rem, y, wday, yday;
+ int days, rem, y, wday, yday;
const unsigned short int *ip;
- days = time / SECS_PER_DAY;
- rem = time % SECS_PER_DAY;
+ days = div_u64_rem(time, SECS_PER_DAY, &rem);
rem += offset;
while (rem < 0) {
rem += SECS_PER_DAY;
@@ -657,7 +629,7 @@ static void unmktime(unsigned long time, long offset,
int mac_hwclk(int op, struct rtc_time *t)
{
- unsigned long now;
+ time64_t now;
if (!op) { /* read */
switch (macintosh_config->adb_type) {
@@ -672,7 +644,7 @@ int mac_hwclk(int op, struct rtc_time *t)
now = cuda_read_time();
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
now = pmu_read_time();
break;
@@ -693,8 +665,8 @@ int mac_hwclk(int op, struct rtc_time *t)
__func__, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
t->tm_hour, t->tm_min, t->tm_sec);
- now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
- t->tm_hour, t->tm_min, t->tm_sec);
+ now = mktime64(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_IOP:
@@ -708,7 +680,7 @@ int mac_hwclk(int op, struct rtc_time *t)
cuda_write_time(now);
break;
#endif
-#ifdef CONFIG_ADB_PMU68K
+#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
pmu_write_time(now);
break;
@@ -719,19 +691,3 @@ int mac_hwclk(int op, struct rtc_time *t)
}
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;
-}
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