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-rw-r--r--include/asm-arm/tlbflush.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/asm-arm/tlbflush.h b/include/asm-arm/tlbflush.h
index 8c6bc1bb9d1..909656c747e 100644
--- a/include/asm-arm/tlbflush.h
+++ b/include/asm-arm/tlbflush.h
@@ -39,6 +39,7 @@
#define TLB_V6_D_ASID (1 << 17)
#define TLB_V6_I_ASID (1 << 18)
+#define TLB_L2CLEAN_FR (1 << 29) /* Feroceon */
#define TLB_DCLEAN (1 << 30)
#define TLB_WB (1 << 31)
@@ -51,6 +52,7 @@
* v4 - ARMv4 without write buffer
* v4wb - ARMv4 with write buffer without I TLB flush entry instruction
* v4wbi - ARMv4 with write buffer with I TLB flush entry instruction
+ * fr - Feroceon (v4wbi with non-outer-cacheable page table walks)
* v6wbi - ARMv6 with write buffer with I TLB flush entry instruction
*/
#undef _TLB
@@ -103,6 +105,23 @@
# define v4wbi_always_flags (-1UL)
#endif
+#define fr_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_L2CLEAN_FR | \
+ TLB_V4_I_FULL | TLB_V4_D_FULL | \
+ TLB_V4_I_PAGE | TLB_V4_D_PAGE)
+
+#ifdef CONFIG_CPU_TLB_FEROCEON
+# define fr_possible_flags fr_tlb_flags
+# define fr_always_flags fr_tlb_flags
+# ifdef _TLB
+# define MULTI_TLB 1
+# else
+# define _TLB v4wbi
+# endif
+#else
+# define fr_possible_flags 0
+# define fr_always_flags (-1UL)
+#endif
+
#define v4wb_tlb_flags (TLB_WB | TLB_DCLEAN | \
TLB_V4_I_FULL | TLB_V4_D_FULL | \
TLB_V4_D_PAGE)
@@ -245,12 +264,14 @@ extern struct cpu_tlb_fns cpu_tlb;
#define possible_tlb_flags (v3_possible_flags | \
v4_possible_flags | \
v4wbi_possible_flags | \
+ fr_possible_flags | \
v4wb_possible_flags | \
v6wbi_possible_flags)
#define always_tlb_flags (v3_always_flags & \
v4_always_flags & \
v4wbi_always_flags & \
+ fr_always_flags & \
v4wb_always_flags & \
v6wbi_always_flags)
@@ -417,6 +438,11 @@ static inline void flush_pmd_entry(pmd_t *pmd)
if (tlb_flag(TLB_DCLEAN))
asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pmd"
: : "r" (pmd) : "cc");
+
+ if (tlb_flag(TLB_L2CLEAN_FR))
+ asm("mcr p15, 1, %0, c15, c9, 1 @ L2 flush_pmd"
+ : : "r" (pmd) : "cc");
+
if (tlb_flag(TLB_WB))
dsb();
}
@@ -428,6 +454,10 @@ static inline void clean_pmd_entry(pmd_t *pmd)
if (tlb_flag(TLB_DCLEAN))
asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pmd"
: : "r" (pmd) : "cc");
+
+ if (tlb_flag(TLB_L2CLEAN_FR))
+ asm("mcr p15, 1, %0, c15, c9, 1 @ L2 flush_pmd"
+ : : "r" (pmd) : "cc");
}
#undef tlb_flag