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authorHuacai Chen <chenhc@lemote.com>2016-03-03 02:45:12 +0100
committerRalf Baechle <ralf@linux-mips.org>2016-05-13 14:02:15 +0200
commit380cd582c08831217ae693c86411902e6300ba6b (patch)
treeb7782319903d4af1ceae2e76edd8812b8392ef42 /arch/mips/include/uapi
parentMIPS: Loongson: Invalidate special TLBs when needed (diff)
downloadlinux-380cd582c08831217ae693c86411902e6300ba6b.tar.xz
linux-380cd582c08831217ae693c86411902e6300ba6b.zip
MIPS: Loongson-3: Fast TLB refill handler
Loongson-3A R2 has pwbase/pwfield/pwsize/pwctl registers in CP0 (this is very similar to HTW) and lwdir/lwpte/lddir/ldpte instructions which can be used for fast TLB refill. [ralf@linux-mips.org: Resolve conflict.] Signed-off-by: Huacai Chen <chenhc@lemote.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Steven J . Hill <sjhill@realitydiluted.com> Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12754/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/uapi')
-rw-r--r--arch/mips/include/uapi/asm/inst.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index ddea53e3a9bb..3bb8cd957e81 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -204,6 +204,16 @@ enum mad_func {
};
/*
+ * func field for page table walker (Loongson-3).
+ */
+enum ptw_func {
+ lwdir_op = 0x00,
+ lwpte_op = 0x01,
+ lddir_op = 0x02,
+ ldpte_op = 0x03,
+};
+
+/*
* func field for special3 lx opcodes (Cavium Octeon).
*/
enum lx_func {