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Diffstat (limited to 'arch/mips/include/asm/mmu_context.h')
-rw-r--r--arch/mips/include/asm/mmu_context.h29
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h
index 6083db586500..145bb81ccaa5 100644
--- a/arch/mips/include/asm/mmu_context.h
+++ b/arch/mips/include/asm/mmu_context.h
@@ -24,6 +24,33 @@
#endif /* SMTC */
#include <asm-generic/mm_hooks.h>
+#ifdef CONFIG_MIPS_PGD_C0_CONTEXT
+
+#define TLBMISS_HANDLER_SETUP_PGD(pgd) \
+ tlbmiss_handler_setup_pgd((unsigned long)(pgd))
+
+static inline void tlbmiss_handler_setup_pgd(unsigned long pgd)
+{
+ /* Check for swapper_pg_dir and convert to physical address. */
+ if ((pgd & CKSEG3) == CKSEG0)
+ pgd = CPHYSADDR(pgd);
+ write_c0_context(pgd << 11);
+}
+
+#define TLBMISS_HANDLER_SETUP() \
+ do { \
+ TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir); \
+ write_c0_xcontext((unsigned long) smp_processor_id() << 51); \
+ } while (0)
+
+
+static inline unsigned long get_current_pgd(void)
+{
+ return PHYS_TO_XKSEG_CACHED((read_c0_context() >> 11) & ~0xfffUL);
+}
+
+#else /* CONFIG_MIPS_PGD_C0_CONTEXT: using pgd_current*/
+
/*
* For the fast tlb miss handlers, we keep a per cpu array of pointers
* to the current pgd for each processor. Also, the proc. id is stuffed
@@ -46,7 +73,7 @@ extern unsigned long pgd_current[];
back_to_back_c0_hazard(); \
TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
#endif
-
+#endif /* CONFIG_MIPS_PGD_C0_CONTEXT*/
#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
#define ASID_INC 0x40