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Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/slice.h')
-rw-r--r--arch/powerpc/include/asm/book3s/64/slice.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/slice.h b/arch/powerpc/include/asm/book3s/64/slice.h
new file mode 100644
index 000000000000..db0dedab65ee
--- /dev/null
+++ b/arch/powerpc/include/asm/book3s/64/slice.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_BOOK3S_64_SLICE_H
+#define _ASM_POWERPC_BOOK3S_64_SLICE_H
+
+#ifdef CONFIG_PPC_MM_SLICES
+
+#define SLICE_LOW_SHIFT 28
+#define SLICE_LOW_TOP (0x100000000ul)
+#define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
+#define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT)
+
+#define SLICE_HIGH_SHIFT 40
+#define SLICE_NUM_HIGH (H_PGTABLE_RANGE >> SLICE_HIGH_SHIFT)
+#define GET_HIGH_SLICE_INDEX(addr) ((addr) >> SLICE_HIGH_SHIFT)
+
+#else /* CONFIG_PPC_MM_SLICES */
+
+#define get_slice_psize(mm, addr) ((mm)->context.user_psize)
+#define slice_set_user_psize(mm, psize) \
+do { \
+ (mm)->context.user_psize = (psize); \
+ (mm)->context.sllp = SLB_VSID_USER | mmu_psize_defs[(psize)].sllp; \
+} while (0)
+
+#endif /* CONFIG_PPC_MM_SLICES */
+
+#endif /* _ASM_POWERPC_BOOK3S_64_SLICE_H */