forked from Imagelibrary/rtems
3b4ddafe99
Previously _ISR_Local_{disable,enable}() was executed twice for each
cache line operation, and since operations over the entire cache were
implemented by calling the single-line operations in a loop, this made
those operations rather costly.
Fix the double-toggle by calling _OR1K_mtspr() directly, and removing
the now-unused corresponding _CPU_OR1K_Cache_* functions.
Fix the entire-operations by moving the ISR toggle outside of the
loop, and by calling _OR1K_mtspr() directly instead of the single-line
operations.
Also implement range functions, since otherwise the cache manager falls
back on looping over the single-line operations.