diff options
Diffstat (limited to 'include/asm-sparc64/mmu.h')
| -rw-r--r-- | include/asm-sparc64/mmu.h | 57 |
1 files changed, 43 insertions, 14 deletions
diff --git a/include/asm-sparc64/mmu.h b/include/asm-sparc64/mmu.h index 8627eed6e83..2d4f2ea9568 100644 --- a/include/asm-sparc64/mmu.h +++ b/include/asm-sparc64/mmu.h @@ -4,20 +4,9 @@ #include <linux/config.h> #include <asm/page.h> #include <asm/const.h> +#include <asm/hypervisor.h> -/* - * For the 8k pagesize kernel, use only 10 hw context bits to optimize some - * shifts in the fast tlbmiss handlers, instead of all 13 bits (specifically - * for vpte offset calculation). For other pagesizes, this optimization in - * the tlbhandlers can not be done; but still, all 13 bits can not be used - * because the tlb handlers use "andcc" instruction which sign extends 13 - * bit arguments. - */ -#if PAGE_SHIFT == 13 -#define CTX_NR_BITS 10 -#else -#define CTX_NR_BITS 12 -#endif +#define CTX_NR_BITS 13 #define TAG_CONTEXT_BITS ((_AC(1,UL) << CTX_NR_BITS) - _AC(1,UL)) @@ -90,10 +79,50 @@ #ifndef __ASSEMBLY__ +#define TSB_ENTRY_ALIGNMENT 16 + +struct tsb { + unsigned long tag; + unsigned long pte; +} __attribute__((aligned(TSB_ENTRY_ALIGNMENT))); + +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); + +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; +}; + +#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 { - unsigned long sparc64_ctx_val; + 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 */ |