diff options
Diffstat (limited to 'arch/openrisc/mm/cache.c')
| -rw-r--r-- | arch/openrisc/mm/cache.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/openrisc/mm/cache.c b/arch/openrisc/mm/cache.c index f33df46dae4e..2667d90691b5 100644 --- a/arch/openrisc/mm/cache.c +++ b/arch/openrisc/mm/cache.c @@ -63,6 +63,22 @@ void local_icache_page_inv(struct page *page) } EXPORT_SYMBOL(local_icache_page_inv); +void local_icache_all_inv(void) +{ + if (cpu_cache_is_present(SPR_UPR_ICP)) { + unsigned long iccfgr = mfspr(SPR_ICCFGR); + unsigned long sets = 1 << ((iccfgr & SPR_ICCFGR_NCS) >> 3); + unsigned long block_size = 16 << ((iccfgr & SPR_ICCFGR_CBS) >> 7); + unsigned long paddr = 0; + unsigned long end = sets * block_size; + + while (paddr < end) { + mtspr(SPR_ICBIR, paddr); + paddr += block_size; + } + } +} + void local_dcache_range_flush(unsigned long start, unsigned long end) { cache_loop(start, end, SPR_DCBFR, SPR_UPR_DCP); |