arch/powerpc/include/asm/mmu-book3e.h - kernel/windcharger - Git at Google

 #ifndef _ASM_POWERPC_MMU_BOOK3E_H_
 #define _ASM_POWERPC_MMU_BOOK3E_H_
 /*
  * Freescale Book-E/Book-3e (ISA 2.06+) MMU support
  */

 /* Book-3e defined page sizes */
 #define BOOK3E_PAGESZ_1K	0
 #define BOOK3E_PAGESZ_2K	1
 #define BOOK3E_PAGESZ_4K	2
 #define BOOK3E_PAGESZ_8K	3
 #define BOOK3E_PAGESZ_16K	4
 #define BOOK3E_PAGESZ_32K	5
 #define BOOK3E_PAGESZ_64K	6
 #define BOOK3E_PAGESZ_128K	7
 #define BOOK3E_PAGESZ_256K	8
 #define BOOK3E_PAGESZ_512K	9
 #define BOOK3E_PAGESZ_1M	10
 #define BOOK3E_PAGESZ_2M	11
 #define BOOK3E_PAGESZ_4M	12
 #define BOOK3E_PAGESZ_8M	13
 #define BOOK3E_PAGESZ_16M	14
 #define BOOK3E_PAGESZ_32M	15
 #define BOOK3E_PAGESZ_64M	16
 #define BOOK3E_PAGESZ_128M	17
 #define BOOK3E_PAGESZ_256M	18
 #define BOOK3E_PAGESZ_512M	19
 #define BOOK3E_PAGESZ_1GB	20
 #define BOOK3E_PAGESZ_2GB	21
 #define BOOK3E_PAGESZ_4GB	22
 #define BOOK3E_PAGESZ_8GB	23
 #define BOOK3E_PAGESZ_16GB	24
 #define BOOK3E_PAGESZ_32GB	25
 #define BOOK3E_PAGESZ_64GB	26
 #define BOOK3E_PAGESZ_128GB	27
 #define BOOK3E_PAGESZ_256GB	28
 #define BOOK3E_PAGESZ_512GB	29
 #define BOOK3E_PAGESZ_1TB	30
 #define BOOK3E_PAGESZ_2TB	31

 /* MAS registers bit definitions */

 #define MAS0_TLBSEL(x)		(((x) << 28) & 0x30000000)
 #define MAS0_ESEL(x)		(((x) << 16) & 0x0FFF0000)
 #define MAS0_NV(x)		((x) & 0x00000FFF)
 #define MAS0_ESEL_MASK		0x0FFF0000
 #define MAS0_HES		0x00004000
 #define MAS0_WQ_ALLWAYS		0x00000000
 #define MAS0_WQ_COND		0x00001000
 #define MAS0_WQ_CLR_RSRV       	0x00002000

 #define MAS1_VALID		0x80000000
 #define MAS1_IPROT		0x40000000
 #define MAS1_TID(x)		(((x) << 16) & 0x3FFF0000)
 #define MAS1_IND		0x00002000
 #define MAS1_TS			0x00001000
 #define MAS1_TSIZE_MASK		0x00000f80
 #define MAS1_TSIZE_SHIFT	7
 #define MAS1_TSIZE(x)		(((x) << MAS1_TSIZE_SHIFT) & MAS1_TSIZE_MASK)

 #define MAS2_EPN		0xFFFFF000
 #define MAS2_X0			0x00000040
 #define MAS2_X1			0x00000020
 #define MAS2_W			0x00000010
 #define MAS2_I			0x00000008
 #define MAS2_M			0x00000004
 #define MAS2_G			0x00000002
 #define MAS2_E			0x00000001
 #define MAS2_WIMGE_MASK		0x0000001f
 #define MAS2_EPN_MASK(size)		(~0 << (size + 10))
 #define MAS2_VAL(addr, size, flags)	((addr) & MAS2_EPN_MASK(size) | (flags))

 #define MAS3_RPN		0xFFFFF000
 #define MAS3_U0			0x00000200
 #define MAS3_U1			0x00000100
 #define MAS3_U2			0x00000080
 #define MAS3_U3			0x00000040
 #define MAS3_UX			0x00000020
 #define MAS3_SX			0x00000010
 #define MAS3_UW			0x00000008
 #define MAS3_SW			0x00000004
 #define MAS3_UR			0x00000002
 #define MAS3_SR			0x00000001
 #define MAS3_BAP_MASK		0x0000003f
 #define MAS3_SPSIZE		0x0000003e
 #define MAS3_SPSIZE_SHIFT	1

 #define MAS4_TLBSELD(x) 	MAS0_TLBSEL(x)
 #define MAS4_INDD		0x00008000	/* Default IND */
 #define MAS4_TSIZED(x)		MAS1_TSIZE(x)
 #define MAS4_X0D		0x00000040
 #define MAS4_X1D		0x00000020
 #define MAS4_WD			0x00000010
 #define MAS4_ID			0x00000008
 #define MAS4_MD			0x00000004
 #define MAS4_GD			0x00000002
 #define MAS4_ED			0x00000001
 #define MAS4_WIMGED_MASK	0x0000001f	/* Default WIMGE */
 #define MAS4_WIMGED_SHIFT	0
 #define MAS4_VLED		MAS4_X1D	/* Default VLE */
 #define MAS4_ACMD		0x000000c0	/* Default ACM */
 #define MAS4_ACMD_SHIFT		6
 #define MAS4_TSIZED_MASK	0x00000f80	/* Default TSIZE */
 #define MAS4_TSIZED_SHIFT	7

 #define MAS6_SPID0		0x3FFF0000
 #define MAS6_SPID1		0x00007FFE
 #define MAS6_ISIZE(x)		MAS1_TSIZE(x)
 #define MAS6_SAS		0x00000001
 #define MAS6_SPID		MAS6_SPID0
 #define MAS6_SIND 		0x00000002	/* Indirect page */
 #define MAS6_SIND_SHIFT		1
 #define MAS6_SPID_MASK		0x3fff0000
 #define MAS6_SPID_SHIFT		16
 #define MAS6_ISIZE_MASK		0x00000f80
 #define MAS6_ISIZE_SHIFT	7

 #define MAS7_RPN		0xFFFFFFFF

 /* Bit definitions for MMUCFG */
 #define MMUCFG_MAVN	0x00000003	/* MMU Architecture Version Number */
 #define MMUCFG_MAVN_V1	0x00000000	/* v1.0 */
 #define MMUCFG_MAVN_V2	0x00000001	/* v2.0 */
 #define MMUCFG_NTLBS	0x0000000c	/* Number of TLBs */
 #define MMUCFG_PIDSIZE	0x000007c0	/* PID Reg Size */
 #define MMUCFG_TWC	0x00008000	/* TLB Write Conditional (v2.0) */
 #define MMUCFG_LRAT	0x00010000	/* LRAT Supported (v2.0) */
 #define MMUCFG_RASIZE	0x00fe0000	/* Real Addr Size */
 #define MMUCFG_LPIDSIZE	0x0f000000	/* LPID Reg Size */

 /* Bit definitions for MMUCSR0 */
 #define MMUCSR0_TLB1FI	0x00000002	/* TLB1 Flash invalidate */
 #define MMUCSR0_TLB0FI	0x00000004	/* TLB0 Flash invalidate */
 #define MMUCSR0_TLB2FI	0x00000040	/* TLB2 Flash invalidate */
 #define MMUCSR0_TLB3FI	0x00000020	/* TLB3 Flash invalidate */
 #define MMUCSR0_TLBFI	(MMUCSR0_TLB0FI | MMUCSR0_TLB1FI | \
 			 MMUCSR0_TLB2FI | MMUCSR0_TLB3FI)
 #define MMUCSR0_TLB0PS	0x00000780	/* TLB0 Page Size */
 #define MMUCSR0_TLB1PS	0x00007800	/* TLB1 Page Size */
 #define MMUCSR0_TLB2PS	0x00078000	/* TLB2 Page Size */
 #define MMUCSR0_TLB3PS	0x00780000	/* TLB3 Page Size */

 /* MMUCFG bits */
 #define MMUCFG_MAVN_NASK	0x00000003
 #define MMUCFG_MAVN_V1_0	0x00000000
 #define MMUCFG_MAVN_V2_0	0x00000001
 #define MMUCFG_NTLB_MASK	0x0000000c
 #define MMUCFG_NTLB_SHIFT	2
 #define MMUCFG_PIDSIZE_MASK	0x000007c0
 #define MMUCFG_PIDSIZE_SHIFT	6
 #define MMUCFG_TWC		0x00008000
 #define MMUCFG_LRAT		0x00010000
 #define MMUCFG_RASIZE_MASK	0x00fe0000
 #define MMUCFG_RASIZE_SHIFT	17
 #define MMUCFG_LPIDSIZE_MASK	0x0f000000
 #define MMUCFG_LPIDSIZE_SHIFT	24

 /* TLBnCFG encoding */
 #define TLBnCFG_N_ENTRY		0x00000fff	/* number of entries */
 #define TLBnCFG_HES		0x00002000	/* HW select supported */
 #define TLBnCFG_IPROT		0x00008000	/* IPROT supported */
 #define TLBnCFG_GTWE		0x00010000	/* Guest can write */
 #define TLBnCFG_IND		0x00020000	/* IND entries supported */
 #define TLBnCFG_PT		0x00040000	/* Can load from page table */
 #define TLBnCFG_MINSIZE		0x00f00000	/* Minimum Page Size (v1.0) */
 #define TLBnCFG_MINSIZE_SHIFT	20
 #define TLBnCFG_MAXSIZE		0x000f0000	/* Maximum Page Size (v1.0) */
 #define TLBnCFG_MAXSIZE_SHIFT	16
 #define TLBnCFG_ASSOC		0xff000000	/* Associativity */

 /* TLBnPS encoding */
 #define TLBnPS_4K		0x00000004
 #define TLBnPS_8K		0x00000008
 #define TLBnPS_16K		0x00000010
 #define TLBnPS_32K		0x00000020
 #define TLBnPS_64K		0x00000040
 #define TLBnPS_128K		0x00000080
 #define TLBnPS_256K		0x00000100
 #define TLBnPS_512K		0x00000200
 #define TLBnPS_1M 		0x00000400
 #define TLBnPS_2M 		0x00000800
 #define TLBnPS_4M 		0x00001000
 #define TLBnPS_8M 		0x00002000
 #define TLBnPS_16M		0x00004000
 #define TLBnPS_32M		0x00008000
 #define TLBnPS_64M		0x00010000
 #define TLBnPS_128M		0x00020000
 #define TLBnPS_256M		0x00040000
 #define TLBnPS_512M		0x00080000
 #define TLBnPS_1G		0x00100000
 #define TLBnPS_2G		0x00200000
 #define TLBnPS_4G		0x00400000
 #define TLBnPS_8G		0x00800000
 #define TLBnPS_16G		0x01000000
 #define TLBnPS_32G		0x02000000
 #define TLBnPS_64G		0x04000000
 #define TLBnPS_128G		0x08000000
 #define TLBnPS_256G		0x10000000

 /* tlbilx action encoding */
 #define TLBILX_T_ALL			0
 #define TLBILX_T_TID			1
 #define TLBILX_T_FULLMATCH		3
 #define TLBILX_T_CLASS0			4
 #define TLBILX_T_CLASS1			5
 #define TLBILX_T_CLASS2			6
 #define TLBILX_T_CLASS3			7

 #ifndef __ASSEMBLY__

 extern unsigned int tlbcam_index;

 typedef struct {
 	unsigned int	id;
 	unsigned int	active;
 	unsigned long	vdso_base;
 #ifdef CONFIG_PPC_ICSWX
 	struct spinlock *cop_lockp;	/* guard cop related stuff */
 	unsigned long acop;		/* mask of enabled coprocessor types */
 #endif /* CONFIG_PPC_ICSWX */
 #ifdef CONFIG_PPC_MM_SLICES
 	u64 low_slices_psize;   /* SLB page size encodings */
 	u64 high_slices_psize;  /* 4 bits per slice for now */
 	u16 user_psize;         /* page size index */
 #endif
 } mm_context_t;

 /* Page size definitions, common between 32 and 64-bit
  *
  *    shift : is the "PAGE_SHIFT" value for that page size
  *    penc  : is the pte encoding mask
  *
  */
 struct mmu_psize_def
 {
 	unsigned int	shift;	/* number of bits */
 	unsigned int	enc;	/* PTE encoding */
 	unsigned int    ind;    /* Corresponding indirect page size shift */
 	unsigned int	flags;
 #define MMU_PAGE_SIZE_DIRECT	0x1	/* Supported as a direct size */
 #define MMU_PAGE_SIZE_INDIRECT	0x2	/* Supported as an indirect size */
 };
 extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];

 /* The page sizes use the same names as 64-bit hash but are
  * constants
  */
 #if defined(CONFIG_PPC_4K_PAGES)
 #define mmu_virtual_psize	MMU_PAGE_4K
 #elif defined(CONFIG_PPC_64K_PAGES)
 #define mmu_virtual_psize	MMU_PAGE_64K
 #else
 #error Unsupported page size
 #endif

 extern int mmu_linear_psize;
 extern int mmu_vmemmap_psize;

 #ifdef CONFIG_PPC64
 extern unsigned long linear_map_top;

 /*
  * 64-bit booke platforms don't load the tlb in the tlb miss handler code.
  * HUGETLB_NEED_PRELOAD handles this - it causes huge_ptep_set_access_flags to
  * return 1, indicating that the tlb requires preloading.
  */
 #define HUGETLB_NEED_PRELOAD
 #endif

 #endif /* !__ASSEMBLY__ */

 #endif /* _ASM_POWERPC_MMU_BOOK3E_H_ */
	#ifndef _ASM_POWERPC_MMU_BOOK3E_H_
	#define _ASM_POWERPC_MMU_BOOK3E_H_
	/*
	* Freescale Book-E/Book-3e (ISA 2.06+) MMU support
	*/

	/* Book-3e defined page sizes */
	#define BOOK3E_PAGESZ_1K 0
	#define BOOK3E_PAGESZ_2K 1
	#define BOOK3E_PAGESZ_4K 2
	#define BOOK3E_PAGESZ_8K 3
	#define BOOK3E_PAGESZ_16K 4
	#define BOOK3E_PAGESZ_32K 5
	#define BOOK3E_PAGESZ_64K 6
	#define BOOK3E_PAGESZ_128K 7
	#define BOOK3E_PAGESZ_256K 8
	#define BOOK3E_PAGESZ_512K 9
	#define BOOK3E_PAGESZ_1M 10
	#define BOOK3E_PAGESZ_2M 11
	#define BOOK3E_PAGESZ_4M 12
	#define BOOK3E_PAGESZ_8M 13
	#define BOOK3E_PAGESZ_16M 14
	#define BOOK3E_PAGESZ_32M 15
	#define BOOK3E_PAGESZ_64M 16
	#define BOOK3E_PAGESZ_128M 17
	#define BOOK3E_PAGESZ_256M 18
	#define BOOK3E_PAGESZ_512M 19
	#define BOOK3E_PAGESZ_1GB 20
	#define BOOK3E_PAGESZ_2GB 21
	#define BOOK3E_PAGESZ_4GB 22
	#define BOOK3E_PAGESZ_8GB 23
	#define BOOK3E_PAGESZ_16GB 24
	#define BOOK3E_PAGESZ_32GB 25
	#define BOOK3E_PAGESZ_64GB 26
	#define BOOK3E_PAGESZ_128GB 27
	#define BOOK3E_PAGESZ_256GB 28
	#define BOOK3E_PAGESZ_512GB 29
	#define BOOK3E_PAGESZ_1TB 30
	#define BOOK3E_PAGESZ_2TB 31

	/* MAS registers bit definitions */

	#define MAS0_TLBSEL(x) (((x) << 28) & 0x30000000)
	#define MAS0_ESEL(x) (((x) << 16) & 0x0FFF0000)
	#define MAS0_NV(x) ((x) & 0x00000FFF)
	#define MAS0_ESEL_MASK 0x0FFF0000
	#define MAS0_HES 0x00004000
	#define MAS0_WQ_ALLWAYS 0x00000000
	#define MAS0_WQ_COND 0x00001000
	#define MAS0_WQ_CLR_RSRV 0x00002000

	#define MAS1_VALID 0x80000000
	#define MAS1_IPROT 0x40000000
	#define MAS1_TID(x) (((x) << 16) & 0x3FFF0000)
	#define MAS1_IND 0x00002000
	#define MAS1_TS 0x00001000
	#define MAS1_TSIZE_MASK 0x00000f80
	#define MAS1_TSIZE_SHIFT 7
	#define MAS1_TSIZE(x) (((x) << MAS1_TSIZE_SHIFT) & MAS1_TSIZE_MASK)

	#define MAS2_EPN 0xFFFFF000
	#define MAS2_X0 0x00000040
	#define MAS2_X1 0x00000020
	#define MAS2_W 0x00000010
	#define MAS2_I 0x00000008
	#define MAS2_M 0x00000004
	#define MAS2_G 0x00000002
	#define MAS2_E 0x00000001
	#define MAS2_WIMGE_MASK 0x0000001f
	#define MAS2_EPN_MASK(size) (~0 << (size + 10))
	#define MAS2_VAL(addr, size, flags) ((addr) & MAS2_EPN_MASK(size) \| (flags))

	#define MAS3_RPN 0xFFFFF000
	#define MAS3_U0 0x00000200
	#define MAS3_U1 0x00000100
	#define MAS3_U2 0x00000080
	#define MAS3_U3 0x00000040
	#define MAS3_UX 0x00000020
	#define MAS3_SX 0x00000010
	#define MAS3_UW 0x00000008
	#define MAS3_SW 0x00000004
	#define MAS3_UR 0x00000002
	#define MAS3_SR 0x00000001
	#define MAS3_BAP_MASK 0x0000003f
	#define MAS3_SPSIZE 0x0000003e
	#define MAS3_SPSIZE_SHIFT 1

	#define MAS4_TLBSELD(x) MAS0_TLBSEL(x)
	#define MAS4_INDD 0x00008000 /* Default IND */
	#define MAS4_TSIZED(x) MAS1_TSIZE(x)
	#define MAS4_X0D 0x00000040
	#define MAS4_X1D 0x00000020
	#define MAS4_WD 0x00000010
	#define MAS4_ID 0x00000008
	#define MAS4_MD 0x00000004
	#define MAS4_GD 0x00000002
	#define MAS4_ED 0x00000001
	#define MAS4_WIMGED_MASK 0x0000001f /* Default WIMGE */
	#define MAS4_WIMGED_SHIFT 0
	#define MAS4_VLED MAS4_X1D /* Default VLE */
	#define MAS4_ACMD 0x000000c0 /* Default ACM */
	#define MAS4_ACMD_SHIFT 6
	#define MAS4_TSIZED_MASK 0x00000f80 /* Default TSIZE */
	#define MAS4_TSIZED_SHIFT 7

	#define MAS6_SPID0 0x3FFF0000
	#define MAS6_SPID1 0x00007FFE
	#define MAS6_ISIZE(x) MAS1_TSIZE(x)
	#define MAS6_SAS 0x00000001
	#define MAS6_SPID MAS6_SPID0
	#define MAS6_SIND 0x00000002 /* Indirect page */
	#define MAS6_SIND_SHIFT 1
	#define MAS6_SPID_MASK 0x3fff0000
	#define MAS6_SPID_SHIFT 16
	#define MAS6_ISIZE_MASK 0x00000f80
	#define MAS6_ISIZE_SHIFT 7

	#define MAS7_RPN 0xFFFFFFFF

	/* Bit definitions for MMUCFG */
	#define MMUCFG_MAVN 0x00000003 /* MMU Architecture Version Number */
	#define MMUCFG_MAVN_V1 0x00000000 /* v1.0 */
	#define MMUCFG_MAVN_V2 0x00000001 /* v2.0 */
	#define MMUCFG_NTLBS 0x0000000c /* Number of TLBs */
	#define MMUCFG_PIDSIZE 0x000007c0 /* PID Reg Size */
	#define MMUCFG_TWC 0x00008000 /* TLB Write Conditional (v2.0) */
	#define MMUCFG_LRAT 0x00010000 /* LRAT Supported (v2.0) */
	#define MMUCFG_RASIZE 0x00fe0000 /* Real Addr Size */
	#define MMUCFG_LPIDSIZE 0x0f000000 /* LPID Reg Size */

	/* Bit definitions for MMUCSR0 */
	#define MMUCSR0_TLB1FI 0x00000002 /* TLB1 Flash invalidate */
	#define MMUCSR0_TLB0FI 0x00000004 /* TLB0 Flash invalidate */
	#define MMUCSR0_TLB2FI 0x00000040 /* TLB2 Flash invalidate */
	#define MMUCSR0_TLB3FI 0x00000020 /* TLB3 Flash invalidate */
	#define MMUCSR0_TLBFI (MMUCSR0_TLB0FI \| MMUCSR0_TLB1FI \| \
	MMUCSR0_TLB2FI \| MMUCSR0_TLB3FI)
	#define MMUCSR0_TLB0PS 0x00000780 /* TLB0 Page Size */
	#define MMUCSR0_TLB1PS 0x00007800 /* TLB1 Page Size */
	#define MMUCSR0_TLB2PS 0x00078000 /* TLB2 Page Size */
	#define MMUCSR0_TLB3PS 0x00780000 /* TLB3 Page Size */

	/* MMUCFG bits */
	#define MMUCFG_MAVN_NASK 0x00000003
	#define MMUCFG_MAVN_V1_0 0x00000000
	#define MMUCFG_MAVN_V2_0 0x00000001
	#define MMUCFG_NTLB_MASK 0x0000000c
	#define MMUCFG_NTLB_SHIFT 2
	#define MMUCFG_PIDSIZE_MASK 0x000007c0
	#define MMUCFG_PIDSIZE_SHIFT 6
	#define MMUCFG_TWC 0x00008000
	#define MMUCFG_LRAT 0x00010000
	#define MMUCFG_RASIZE_MASK 0x00fe0000
	#define MMUCFG_RASIZE_SHIFT 17
	#define MMUCFG_LPIDSIZE_MASK 0x0f000000
	#define MMUCFG_LPIDSIZE_SHIFT 24

	/* TLBnCFG encoding */
	#define TLBnCFG_N_ENTRY 0x00000fff /* number of entries */
	#define TLBnCFG_HES 0x00002000 /* HW select supported */
	#define TLBnCFG_IPROT 0x00008000 /* IPROT supported */
	#define TLBnCFG_GTWE 0x00010000 /* Guest can write */
	#define TLBnCFG_IND 0x00020000 /* IND entries supported */
	#define TLBnCFG_PT 0x00040000 /* Can load from page table */
	#define TLBnCFG_MINSIZE 0x00f00000 /* Minimum Page Size (v1.0) */
	#define TLBnCFG_MINSIZE_SHIFT 20
	#define TLBnCFG_MAXSIZE 0x000f0000 /* Maximum Page Size (v1.0) */
	#define TLBnCFG_MAXSIZE_SHIFT 16
	#define TLBnCFG_ASSOC 0xff000000 /* Associativity */

	/* TLBnPS encoding */
	#define TLBnPS_4K 0x00000004
	#define TLBnPS_8K 0x00000008
	#define TLBnPS_16K 0x00000010
	#define TLBnPS_32K 0x00000020
	#define TLBnPS_64K 0x00000040
	#define TLBnPS_128K 0x00000080
	#define TLBnPS_256K 0x00000100
	#define TLBnPS_512K 0x00000200
	#define TLBnPS_1M 0x00000400
	#define TLBnPS_2M 0x00000800
	#define TLBnPS_4M 0x00001000
	#define TLBnPS_8M 0x00002000
	#define TLBnPS_16M 0x00004000
	#define TLBnPS_32M 0x00008000
	#define TLBnPS_64M 0x00010000
	#define TLBnPS_128M 0x00020000
	#define TLBnPS_256M 0x00040000
	#define TLBnPS_512M 0x00080000
	#define TLBnPS_1G 0x00100000
	#define TLBnPS_2G 0x00200000
	#define TLBnPS_4G 0x00400000
	#define TLBnPS_8G 0x00800000
	#define TLBnPS_16G 0x01000000
	#define TLBnPS_32G 0x02000000
	#define TLBnPS_64G 0x04000000
	#define TLBnPS_128G 0x08000000
	#define TLBnPS_256G 0x10000000

	/* tlbilx action encoding */
	#define TLBILX_T_ALL 0
	#define TLBILX_T_TID 1
	#define TLBILX_T_FULLMATCH 3
	#define TLBILX_T_CLASS0 4
	#define TLBILX_T_CLASS1 5
	#define TLBILX_T_CLASS2 6
	#define TLBILX_T_CLASS3 7

	#ifndef __ASSEMBLY__

	extern unsigned int tlbcam_index;

	typedef struct {
	unsigned int id;
	unsigned int active;
	unsigned long vdso_base;
	#ifdef CONFIG_PPC_ICSWX
	struct spinlock cop_lockp; / guard cop related stuff */
	unsigned long acop; /* mask of enabled coprocessor types */
	#endif /* CONFIG_PPC_ICSWX */
	#ifdef CONFIG_PPC_MM_SLICES
	u64 low_slices_psize; /* SLB page size encodings */
	u64 high_slices_psize; /* 4 bits per slice for now */
	u16 user_psize; /* page size index */
	#endif
	} mm_context_t;

	/* Page size definitions, common between 32 and 64-bit
	*
	* shift : is the "PAGE_SHIFT" value for that page size
	* penc : is the pte encoding mask
	*
	*/
	struct mmu_psize_def
	{
	unsigned int shift; /* number of bits */
	unsigned int enc; /* PTE encoding */
	unsigned int ind; /* Corresponding indirect page size shift */
	unsigned int flags;
	#define MMU_PAGE_SIZE_DIRECT 0x1 /* Supported as a direct size */
	#define MMU_PAGE_SIZE_INDIRECT 0x2 /* Supported as an indirect size */
	};
	extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];

	/* The page sizes use the same names as 64-bit hash but are
	* constants
	*/
	#if defined(CONFIG_PPC_4K_PAGES)
	#define mmu_virtual_psize MMU_PAGE_4K
	#elif defined(CONFIG_PPC_64K_PAGES)
	#define mmu_virtual_psize MMU_PAGE_64K
	#else
	#error Unsupported page size
	#endif

	extern int mmu_linear_psize;
	extern int mmu_vmemmap_psize;

	#ifdef CONFIG_PPC64
	extern unsigned long linear_map_top;

	/*
	* 64-bit booke platforms don't load the tlb in the tlb miss handler code.
	* HUGETLB_NEED_PRELOAD handles this - it causes huge_ptep_set_access_flags to
	* return 1, indicating that the tlb requires preloading.
	*/
	#define HUGETLB_NEED_PRELOAD
	#endif

	#endif /* !__ASSEMBLY__ */

	#endif /* _ASM_POWERPC_MMU_BOOK3E_H_ */