[SPARC64]: Add a secondary TSB for hugepage mappings.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 25 insertions, 4 deletions

diff --git a/include/asm-sparc64/mmu.h b/include/asm-sparc64/mmu.h
index 230ba678d3b0..2d4f2ea9568a 100644
--- a/include/asm-sparc64/mmu.h
+++ b/include/asm-sparc64/mmu.h
@@ -90,18 +90,39 @@ extern void __tsb_insert(unsigned long ent, unsigned long tag, unsigned long pte
 extern void tsb_flush(unsigned long ent, unsigned long tag);
 extern void tsb_init(struct tsb *tsb, unsigned long size);
 
-typedef struct {
-        spinlock_t              lock;
-        unsigned long           sparc64_ctx_val;
+struct tsb_config {
         struct tsb              *tsb;
         unsigned long           tsb_rss_limit;
         unsigned long           tsb_nentries;
         unsigned long           tsb_reg_val;
         unsigned long           tsb_map_vaddr;
         unsigned long           tsb_map_pte;
-        struct hv_tsb_descr     tsb_descr;
+};
+
+#define MM_TSB_BASE     0
+
+#ifdef CONFIG_HUGETLB_PAGE
+#define MM_TSB_HUGE     1
+#define MM_NUM_TSBS     2
+#else
+#define MM_NUM_TSBS     1
+#endif
+
+typedef struct {
+        spinlock_t              lock;
+        unsigned long           sparc64_ctx_val;
+        unsigned long           huge_pte_count;
+        struct tsb_config       tsb_block[MM_NUM_TSBS];
+        struct hv_tsb_descr     tsb_descr[MM_NUM_TSBS];
 } mm_context_t;
 
 #endif /* !__ASSEMBLY__ */
 
+#define TSB_CONFIG_TSB          0x00
+#define TSB_CONFIG_RSS_LIMIT    0x08
+#define TSB_CONFIG_NENTRIES     0x10
+#define TSB_CONFIG_REG_VAL      0x18
+#define TSB_CONFIG_MAP_VADDR    0x20
+#define TSB_CONFIG_MAP_PTE      0x28
+
 #endif /* __MMU_H */