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

[safe/jmp/linux-2.6] / include / asm-sparc64 / mmu.h

diff --git a/include/asm-sparc64/mmu.h b/include/asm-sparc64/mmu.h
index 230ba67..2d4f2ea 100644 (file)
--- 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 */