Signed-off-by: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>
---
arch/mips/include/asm/mipsregs.h | 16 ++++++++++++++++
arch/mips/include/asm/page.h | 5 +++++
arch/mips/include/asm/pgtable-bits.h | 1 +
arch/mips/include/asm/pgtable.h | 10 ++++++++++
4 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 32ef8be..a581d60 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -220,6 +220,22 @@
#error Bad page size configuration!
#endif
+/*
+ * Default huge tlb size for a given kernel configuration
+ */
+#ifdef CONFIG_PAGE_SIZE_4KB
+#define PM_HUGE_MASK PM_1M
+#elif defined(CONFIG_PAGE_SIZE_8KB)
+#define PM_HUGE_MASK PM_4M
+#elif defined(CONFIG_PAGE_SIZE_16KB)
+#define PM_HUGE_MASK PM_16M
+#elif defined(CONFIG_PAGE_SIZE_32KB)
+#define PM_HUGE_MASK PM_64M
+#elif defined(CONFIG_PAGE_SIZE_64KB)
+#define PM_HUGE_MASK PM_256M
+#elif defined(CONFIG_HUGETLB_PAGE)
+#error Bad page size configuration for hugetlbfs!
+#endif
/*
* Values used for computation of new tlb entries
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index 9f946e4..61ef073 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -32,6 +32,11 @@
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
+#define HPAGE_SHIFT (PAGE_SHIFT + PAGE_SHIFT - 3)
+#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
+#define HPAGE_MASK (~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
+
#ifndef __ASSEMBLY__
#include <linux/pfn.h>
diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h
index 51b34a4..1073e6d 100644
--- a/arch/mips/include/asm/pgtable-bits.h
+++ b/arch/mips/include/asm/pgtable-bits.h
@@ -72,6 +72,7 @@
#else
#define _PAGE_R4KBUG (1<<5) /* workaround for r4k bug */
+#define _PAGE_HUGE (1<<5) /* huge tlb page */
#define _PAGE_GLOBAL (1<<6)
#define _PAGE_VALID (1<<7)
#define _PAGE_SILENT_READ (1<<7) /* synonym */
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 6a0edf7..1a9f9b2 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -292,6 +292,16 @@ static inline pte_t pte_mkyoung(pte_t pte)
pte_val(pte) |= _PAGE_SILENT_READ;
return pte;
}
+
+#ifdef _PAGE_HUGE
+static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_HUGE; }
+
+static inline pte_t pte_mkhuge(pte_t pte)
+{
+ pte_val(pte) |= _PAGE_HUGE;
+ return pte;
+}
+#endif /* _PAGE_HUGE */
#endif
static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
--
1.6.0.6
