| 951 | | u_int32_t __ahdecl |
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| 952 | | ath_hal_getuptime(struct ath_hal *ah) |
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| 953 | | { |
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| 954 | | /* NB: Original uptime logic was totally wrong for Linux. |
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| 955 | | * |
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| 956 | | * Linux systems use unsigned long and special detection of rollover |
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| 957 | | * using macros like time_before, time_after, ... |
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| 958 | | * |
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| 959 | | * Linux initializes jiffies to cause rollover 5m after boot (to detect |
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| 960 | | * bugs earlier). |
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| 961 | | * |
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| 962 | | */ |
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| 963 | | static unsigned long last_uptime_seconds = 0; |
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| 964 | | unsigned long uptime_jiffies = (jiffies - INITIAL_JIFFIES); |
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| 965 | | unsigned long uptime_seconds = ((uptime_jiffies / HZ) * 1000) + |
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| 966 | | (uptime_jiffies % HZ) * (1000 / HZ); |
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| 967 | | |
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| 968 | | #define TEST_ROLLOVER_THEORY |
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| 969 | | #ifdef TEST_ROLLOVER_THEORY |
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| 970 | | static unsigned long last_old_uptime_seconds = 0; |
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| 971 | | unsigned long old_uptime_jiffies = jiffies; |
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| 972 | | unsigned long old_uptime_seconds = ((old_uptime_jiffies / HZ) * 1000) + |
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| 973 | | (old_uptime_jiffies % HZ) * (1000 / HZ); |
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| 974 | | |
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| 975 | | if (old_uptime_seconds < last_old_uptime_seconds) { |
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| 976 | | printk("ROLLOVER ROLLOVER ROLLOVER\n"); |
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| 977 | | printk("ROLLOVER ROLLOVER ROLLOVER\n"); |
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| 978 | | printk("ROLLOVER ROLLOVER ROLLOVER\n"); |
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| 979 | | printk("Expect bugs to follow...\n"); |
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| 980 | | } |
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| 981 | | last_old_uptime_seconds = old_uptime_seconds; |
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| 982 | | #endif |
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| 983 | | if (uptime_seconds < last_uptime_seconds) { |
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| 984 | | printk("ROLLOVER ROLLOVER ROLLOVER\n"); |
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| 985 | | printk("ROLLOVER ROLLOVER ROLLOVER\n"); |
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| 986 | | printk("ROLLOVER ROLLOVER ROLLOVER\n"); |
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| 987 | | printk("Expect bugs to follow...\n"); |
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| 988 | | // XXX: Replace stupid message with a HAL reset?? |
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| 989 | | } |
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| 990 | | last_uptime_seconds = uptime_seconds; |
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| 991 | | return uptime_seconds; |
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| 992 | | } |
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| 993 | | EXPORT_SYMBOL(ath_hal_getuptime); |
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| 994 | | |
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