diff options
Diffstat (limited to 'arch/sh/mm/tlbflush_32.c')
| -rw-r--r-- | arch/sh/mm/tlbflush_32.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/arch/sh/mm/tlbflush_32.c b/arch/sh/mm/tlbflush_32.c index 6f45c1f8a7fe..77dc5efa7127 100644 --- a/arch/sh/mm/tlbflush_32.c +++ b/arch/sh/mm/tlbflush_32.c @@ -123,18 +123,27 @@ void local_flush_tlb_mm(struct mm_struct *mm) void local_flush_tlb_all(void) { unsigned long flags, status; + int i; /* * Flush all the TLB. - * - * Write to the MMU control register's bit: - * TF-bit for SH-3, TI-bit for SH-4. - * It's same position, bit #2. */ local_irq_save(flags); - status = ctrl_inl(MMUCR); - status |= 0x04; - ctrl_outl(status, MMUCR); + jump_to_uncached(); + + status = __raw_readl(MMUCR); + status = ((status & MMUCR_URB) >> MMUCR_URB_SHIFT); + + if (status == 0) + status = MMUCR_URB_NENTRIES; + + for (i = 0; i < status; i++) + __raw_writel(0x0, MMU_UTLB_ADDRESS_ARRAY | (i << 8)); + + for (i = 0; i < 4; i++) + __raw_writel(0x0, MMU_ITLB_ADDRESS_ARRAY | (i << 8)); + + back_to_cached(); ctrl_barrier(); local_irq_restore(flags); } |