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author | Paul Mundt <lethal@linux-sh.org> | 2010-04-02 11:13:27 +0400 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2010-04-02 11:13:27 +0400 |
commit | be97d758e5728099e95fe229866d5c6c900d3092 (patch) | |
tree | 5c5a3fa4b7978857562d730e3101181b5fbebb9f /arch/sh/mm/tlb-pteaex.c | |
parent | 5dd6ef5050c5012267e2b84f3d82ba85cdb5ca32 (diff) | |
download | linux-be97d758e5728099e95fe229866d5c6c900d3092.tar.xz |
sh: Fix up the SH-3 build for recent TLB changes.
While the MMUCR.URB and ITLB/UTLB differentiation works fine for all SH-4
and later TLBs, these features are absent on SH-3. This splits out
local_flush_tlb_all() in to SH-4 and PTEAEX copies while restoring the
old SH-3 one, subsequently fixing up the build.
This will probably want some further reordering and tidying in the
future, but that's out of scope at present.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/tlb-pteaex.c')
-rw-r--r-- | arch/sh/mm/tlb-pteaex.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c index bdd0982b56ee..b71db6af8060 100644 --- a/arch/sh/mm/tlb-pteaex.c +++ b/arch/sh/mm/tlb-pteaex.c @@ -77,3 +77,31 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page) __raw_writel(asid, MMU_ITLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT); back_to_cached(); } + +void local_flush_tlb_all(void) +{ + unsigned long flags, status; + int i; + + /* + * Flush all the TLB. + */ + local_irq_save(flags); + 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); +} |