/*
* PowerPC memory management structures
*/
#ifndef _PPC_MMU_H_
#define _PPC_MMU_H_
#ifndef __ASSEMBLY__
/* Hardware Page Table Entry */
typedef struct _PTE {
#ifdef CONFIG_PPC64BRIDGE
unsigned long long vsid:52;
unsigned long api:5;
unsigned long :5;
unsigned long h:1;
unsigned long v:1;
unsigned long long rpn:52;
#else /* CONFIG_PPC64BRIDGE */
unsigned long v:1; /* Entry is valid */
unsigned long vsid:24; /* Virtual segment identifier */
unsigned long h:1; /* Hash algorithm indicator */
unsigned long api:6; /* Abbreviated page index */
unsigned long rpn:20; /* Real (physical) page number */
#endif /* CONFIG_PPC64BRIDGE */
unsigned long :3; /* Unused */
unsigned long r:1; /* Referenced */
unsigned long c:1; /* Changed */
unsigned long w:1; /* Write-thru cache mode */
unsigned long i:1; /* Cache inhibited */
unsigned long m:1; /* Memory coherence */
unsigned long g:1; /* Guarded */
unsigned long :1; /* Unused */
unsigned long pp:2; /* Page protection */
} PTE;
/* Values for PP (assumes Ks=0, Kp=1) */
#define PP_RWXX 0 /* Supervisor read/write, User none */
#define PP_RWRX 1 /* Supervisor read/write, User read */
#define PP_RWRW 2 /* Supervisor read/write, User read/write */
#define PP_RXRX 3 /* Supervisor read, User read */
/* Segment Register */
typedef struct _SEGREG {
unsigned long t:1; /* Normal or I/O type */
unsigned long ks:1; /* Supervisor 'key' (normally 0) */
unsigned long kp:1; /* User 'key' (normally 1) */
unsigned long n:1; /* No-execute */
unsigned long :4; /* Unused */
unsigned long vsid:24; /* Virtual Segment Identifier */
} SEGREG;
/* Block Address Translation (BAT) Registers */
typedef struct _P601_BATU { /* Upper part of BAT for 601 processor */
unsigned long bepi:15; /* Effective page index (virtual address) */
unsigned long :8; /* unused */
unsigned long w:1;
unsigned long i:1; /* Cache inhibit */
unsigned long m:1; /* Memory coherence */
unsigned long ks:1; /* Supervisor key (normally 0) */
unsigned long kp:1; /* User key (normally 1) */
unsigned long pp:2; /* Page access protections */
} P601_BATU;
typedef struct _BATU { /* Upper part of BAT (all except 601) */
#ifdef CONFIG_PPC64BRIDGE
unsigned long long bepi:47;
#else /* CONFIG_PPC64BRIDGE */
unsigned long bepi:15; /* Effective page index (virtual address) */
#endif /* CONFIG_PPC64BRIDGE */
unsigned long :4; /* Unused */
unsigned long bl:11; /* Block size mask */
unsigned long vs:1; /* Supervisor valid */
unsigned long vp:1; /* User valid */
} BATU;
typedef struct _P601_BATL { /* Lower part of BAT for 601 processor */
unsigned long brpn:15; /* Real page index (physical address) */
unsigned long :10; /* Unused */
unsigned long v:1; /* Valid bit */
unsigned long bl:6; /* Block size mask */
} P601_BATL;
typedef struct _BATL { /* Lower part of BAT (all except 601) */
#ifdef CONFIG_PPC64BRIDGE
unsigned long long brpn:47;
#else /* CONFIG_PPC64BRIDGE */
unsigned long brpn:15; /* Real page index (physical address) */
#endif /* CONFIG_PPC64BRIDGE */
unsigned long :10; /* Unused */
unsigned long w:1; /* Write-thru cache */
unsigned long i:1; /* Cache inhibit */
unsigned long m:1; /* Memory coherence */
unsigned long g:1; /* Guarded (MBZ in IBAT) */
unsigned long :1; /* Unused */
unsigned long pp:2; /* Page access protections */
} BATL;
typedef struct _BAT {
BATU batu; /* Upper register */
BATL batl; /* Lower register */
} BAT;
typedef struct _P601_BAT {
P601_BATU batu; /* Upper register */
P601_BATL batl; /* Lower register */
} P601_BAT;
/*
* Simulated two-level MMU. This structure is used by the kernel
* to keep track of MMU mappings and is used to update/maintain
* the hardware HASH table which is really a cache of mappings.
*
* The simulated structures mimic the hardware available on other
* platforms, notably the 80x86 and 680x0.
*/
typedef struct _pte {
unsigned long page_num:20;
unsigned long flags:12; /* Page flags (some unused bits) */
} pte;
#define PD_SHIFT (10+12) /* Page directory */
#define PD_MASK 0x02FF
#define PT_SHIFT (12) /* Page Table */
#define PT_MASK 0x02FF
#define PG_SHIFT (12) /* Page Entry */
/* MMU context */
typedef struct _MMU_context {
SEGREG segs[16]; /* Segment registers */
pte **pmap; /* Two-level page-map structure */
} MMU_context;
extern void _tlbie(unsigned long va); /* invalidate a TLB entry */
extern void _tlbia(void); /* invalidate all TLB entries */
typedef enum {
IBAT0 = 0, IBAT1, IBAT2, IBAT3,
DBAT0, DBAT1, DBAT2, DBAT3
} ppc_bat_t;
extern int read_bat(ppc_bat_t bat, unsigned long *upper, unsigned long *lower);
extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower);
#endif /* __ASSEMBLY__ */
/* Block size masks */
#define BL_128K 0x000
#define BL_256K 0x001
#define BL_512K 0x003
#define BL_1M 0x007
#define BL_2M 0x00F
#define BL_4M 0x01F
#define BL_8M 0x03F
#define BL_16M 0x07F
#define BL_32M 0x0FF
#define BL_64M 0x1FF
#define BL_128M 0x3FF
#define BL_256M 0x7FF
/* BAT Access Protection */
#define BPP_XX 0x00 /* No access */
#define BPP_RX 0x01 /* Read only */
#define BPP_RW 0x02 /* Read/write */
/* Used to set up SDR1 register */
#define HASH_TABLE_SIZE_64K 0x00010000
#define HASH_TABLE_SIZE_128K 0x00020000
#define HASH_TABLE_SIZE_256K 0x00040000
#define HASH_TABLE_SIZE_512K 0x00080000
#define HASH_TABLE_SIZE_1M 0x00100000
#define HASH_TABLE_SIZE_2M 0x00200000
#define HASH_TABLE_SIZE_4M 0x00400000
#define HASH_TABLE_MASK_64K 0x000
#define HASH_TABLE_MASK_128K 0x001
#define HASH_TABLE_MASK_256K 0x003
#define HASH_TABLE_MASK_512K 0x007
#define HASH_TABLE_MASK_1M 0x00F
#define HASH_TABLE_MASK_2M 0x01F
#define HASH_TABLE_MASK_4M 0x03F
/* Control/status registers for the MPC8xx.
* A write operation to these registers causes serialized access.
* During software tablewalk, the registers used perform mask/shift-add
* operations when written/read. A TLB entry is created when the Mx_RPN
* is written, and the contents of several registers are used to
* create the entry.
*/
#define MI_CTR 784 /* Instruction TLB control register */
#define MI_GPM 0x80000000 /* Set domain manager mode */
#define MI_PPM 0x40000000 /* Set subpage protection */
#define MI_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */
#define MI_RSV4I 0x08000000 /* Reserve 4 TLB entries */
#define MI_PPCS 0x02000000 /* Use MI_RPN prob/priv state */
#define MI_IDXMASK 0x00001f00 /* TLB index to be loaded */
#define MI_RESETVAL 0x00000000 /* Value of register at reset */
/* These are the Ks and Kp from the PowerPC books. For proper operation,
* Ks = 0, Kp = 1.
*/
#define MI_AP 786
#define MI_Ks 0x80000000 /* Should not be set */
#define MI_Kp 0x40000000 /* Should always be set */
/* The effective page number register. When read, contains the information
* about the last instruction TLB miss. When MI_RPN is written, bits in
* this register are used to create the TLB entry.
*/
#define MI_EPN 787
#define MI_EPNMASK 0xfffff000 /* Effective page number for entry */
#define MI_EVALID 0x00000200 /* Entry is valid */
#define MI_ASIDMASK 0x0000000f /* ASID match value */
/* Reset value is undefined */
/* A "level 1" or "segment" or whatever you want to call it register.
* For the instruction TLB, it contains bits that get loaded into the
* TLB entry when the MI_RPN is written.
*/
#define MI_TWC 789
#define MI_APG 0x000001e0 /* Access protection group (0) */
#define MI_GUARDED 0x00000010 /* Guarded storage */
#define MI_PSMASK 0x0000000c /* Mask of page size bits */
#define MI_PS8MEG 0x0000000c /* 8M page size */
#define MI_PS512K 0x00000004 /* 512K page size */
#define MI_PS4K_16K 0x00000000 /* 4K or 16K page size */
#define MI_SVALID 0x00000001 /* Segment entry is valid */
/* Reset value is undefined */
/* Real page number. Defined by the pte. Writing this register
* causes a TLB entry to be created for the instruction TLB, using
* additional information from the MI_EPN, and MI_TWC registers.
*/
#define MI_RPN 790
/* Define an RPN value for mapping kernel memory to large virtual
* pages for boot initialization. This has real page number of 0,
* large page size, shared page, cache enabled, and valid.
* Also mark all subpages valid and write access.
*/
#define MI_BOOTINIT 0x000001fd
#define MD_CTR 792 /* Data TLB control register */
#define MD_GPM 0x80000000 /* Set domain manager mode */
#define MD_PPM 0x40000000 /* Set subpage protection */
#define MD_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */
#define MD_WTDEF 0x10000000 /* Set writethrough when MMU dis */
#define MD_RSV4I 0x08000000 /* Reserve 4 TLB entries */
#define MD_TWAM 0x04000000 /* Use 4K page hardware assist */
#define MD_PPCS 0x02000000 /* Use MI_RPN prob/priv state */
#define MD_IDXMASK 0x00001f00 /* TLB index to be loaded */
#define MD_RESETVAL 0x04000000 /* Value of register at reset */
#define M_CASID 793 /* Address space ID (context) to match */
#define MC_ASIDMASK 0x0000000f /* Bits used for ASID value */
/* These are the Ks and Kp from the PowerPC books. For proper operation,
* Ks = 0, Kp = 1.
*/
#define MD_AP 794
#define MD_Ks 0x80000000 /* Should not be set */
#define MD_Kp 0x40000000 /* Should always be set */
/* The effective page number register. When read, contains the information
* about the last instruction TLB miss. When MD_RPN is written, bits in
* this register are used to create the TLB entry.
*/
#define MD_EPN 795
#define MD_EPNMASK 0xfffff000 /* Effective page number for entry */
#define MD_EVALID 0x00000200 /* Entry is valid */
#define MD_ASIDMASK 0x0000000f /* ASID match value */
/* Reset value is undefined */
/* The pointer to the base address of the first level page table.
* During a software tablewalk, reading this register provides the address
* of the entry associated with MD_EPN.
*/
#define M_TWB 796
#define M_L1TB 0xfffff000 /* Level 1 table base address */
#define M_L1INDX 0x00000ffc /* Level 1 index, when read */
/* Reset value is undefined */
/* A "level 1" or "segment" or whatever you want to call it register.
* For the data TLB, it contains bits that get loaded into the TLB entry
* when the MD_RPN is written. It is also provides the hardware assist
* for finding the PTE address during software tablewalk.
*/
#define MD_TWC 797
#define MD_L2TB 0xfffff000 /* Level 2 table base address */
#define MD_L2INDX 0xfffffe00 /* Level 2 index (*pte), when read */
#define MD_APG 0x000001e0 /* Access protection group (0) */
#define MD_GUARDED 0x00000010 /* Guarded storage */
#define MD_PSMASK 0x0000000c /* Mask of page size bits */
#define MD_PS8MEG 0x0000000c /* 8M page size */
#define MD_PS512K 0x00000004 /* 512K page size */
#define MD_PS4K_16K 0x00000000 /* 4K or 16K page size */
#define MD_WT 0x00000002 /* Use writethrough page attribute */
#define MD_SVALID 0x00000001 /* Segment entry is valid */
/* Reset value is undefined */
/* Real page number. Defined by the pte. Writing this register
* causes a TLB entry to be created for the data TLB, using
* additional information from the MD_EPN, and MD_TWC registers.
*/
#define MD_RPN 798
/* This is a temporary storage register that could be used to save
* a processor working register during a tablewalk.
*/
#define M_TW 799
/*
* At present, all PowerPC 400-class processors share a similar TLB
* architecture. The instruction and data sides share a unified,
* 64-entry, fully-associative TLB which is maintained totally under
* software control. In addition, the instruction side has a
* hardware-managed, 4-entry, fully- associative TLB which serves as a
* first level to the shared TLB. These two TLBs are known as the UTLB
* and ITLB, respectively.
*/
#define PPC4XX_TLB_SIZE 64
/*
* TLB entries are defined by a "high" tag portion and a "low" data
* portion. On all architectures, the data portion is 32-bits.
*
* TLB entries are managed entirely under software control by reading,
* writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx
* instructions.
*/
#define TLB_LO 1
#define TLB_HI 0
#define TLB_DATA TLB_LO
#define TLB_TAG TLB_HI
/* Tag portion */
#define TLB_EPN_MASK 0xFFFFFC00 /* Effective Page Number */
#define TLB_PAGESZ_MASK 0x00000380
#define TLB_PAGESZ(x) (((x) & 0x7) << 7)
#define PAGESZ_1K 0
#define PAGESZ_4K 1
#define PAGESZ_16K 2
#define PAGESZ_64K 3
#define PAGESZ_256K 4
#define PAGESZ_1M 5
#define PAGESZ_4M 6
#define PAGESZ_16M 7
#define TLB_VALID 0x00000040 /* Entry is valid */
/* Data portion */
#define TLB_RPN_MASK 0xFFFFFC00 /* Real Page Number */
#define TLB_PERM_MASK 0x00000300
#define TLB_EX 0x00000200 /* Instruction execution allowed */
#define TLB_WR 0x00000100 /* Writes permitted */
#define TLB_ZSEL_MASK 0x000000F0
#define TLB_ZSEL(x) (((x) & 0xF) << 4)
#define TLB_ATTR_MASK 0x0000000F
#define TLB_W 0x00000008 /* Caching is write-through */
#define TLB_I 0x00000004 /* Caching is inhibited */
#define TLB_M 0x00000002 /* Memory is coherent */
#define TLB_G 0x00000001 /* Memory is guarded from prefetch */
/*
* e500 support
*/
#define MAS0_TLBSEL_MSK 0x30000000
#define MAS0_TLBSEL(x) (((x) << 28) & MAS0_TLBSEL_MSK)
#define MAS0_ESEL_MSK 0x0FFF0000
#define MAS0_ESEL(x) (((x) << 16) & MAS0_ESEL_MSK)
#define MAS0_NV(x) ((x) & 0x00000FFF)
#define MAS1_VALID 0x80000000
#define MAS1_IPROT 0x40000000
#define MAS1_TID(x) (((x) << 16) & 0x3FFF0000)
#define MAS1_TS 0x00001000
#define MAS1_TSIZE(x) (((x) << 7) & 0x00000F80)
#define MAS2_EPN 0xFFFFF000
#define MAS2_SHAREN 0x00000200
#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 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 MAS4_TLBSELD(x) MAS0_TLBSEL(x)
#define MAS4_TIDDSEL 0x000F0000
#define MAS4_TSIZED(x) MAS1_TSIZE(x)
#define MAS4_DSHAREN 0x00001000
#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 MAS6_SPID 0x00FF0000
#define MAS6_SAS 0x00000001
#define MAS7_RPN 0xFFFFFFFF
#define FSL_BOOKE_MAS0(tlbsel, esel, nv) \
(MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) | MAS0_NV(nv))
#define FSL_BOOKE_MAS1(v, iprot, tid, ts, tsize) \
((((v) << 31) & MAS1_VALID) |\
(((iprot) << 30) & MAS1_IPROT) |\
(MAS1_TID(tid)) |\
(((ts) << 12) & MAS1_TS) |\
(MAS1_TSIZE(tsize)))
#define FSL_BOOKE_MAS2(epn, wimge) \
(((epn) & MAS3_RPN) | (wimge))
#define FSL_BOOKE_MAS3(rpn, user, perms) \
(((rpn) & MAS3_RPN) | (user) | (perms))
#define FSL_BOOKE_MAS7(rpn) \
(((u64)(rpn)) >> 32)
#define BOOKE_PAGESZ_1K 0
#define BOOKE_PAGESZ_2K 1
#define BOOKE_PAGESZ_4K 2
#define BOOKE_PAGESZ_8K 3
#define BOOKE_PAGESZ_16K 4
#define BOOKE_PAGESZ_32K 5
#define BOOKE_PAGESZ_64K 6
#define BOOKE_PAGESZ_128K 7
#define BOOKE_PAGESZ_256K 8
#define BOOKE_PAGESZ_512K 9
#define BOOKE_PAGESZ_1M 10
#define BOOKE_PAGESZ_2M 11
#define BOOKE_PAGESZ_4M 12
#define BOOKE_PAGESZ_8M 13
#define BOOKE_PAGESZ_16M 14
#define BOOKE_PAGESZ_32M 15
#define BOOKE_PAGESZ_64M 16
#define BOOKE_PAGESZ_128M 17
#define BOOKE_PAGESZ_256M 18
#define BOOKE_PAGESZ_512M 19
#define BOOKE_PAGESZ_1G 20
#define BOOKE_PAGESZ_2G 21
#define BOOKE_PAGESZ_4G 22
#define TLBIVAX_ALL 4
#define TLBIVAX_TLB0 0
#if defined(CONFIG_MPC86xx)
#define LAWBAR_BASE_ADDR 0x00FFFFFF
#define LAWAR_TRGT_IF 0x01F00000
#else
#define LAWBAR_BASE_ADDR 0x000FFFFF
#define LAWAR_TRGT_IF 0x00F00000
#endif
#define LAWAR_EN 0x80000000
#define LAWAR_SIZE 0x0000003F
#define LAWAR_TRGT_IF_PCI 0x00000000
#define LAWAR_TRGT_IF_PCI1 0x00000000
#define LAWAR_TRGT_IF_PCIX 0x00000000
#define LAWAR_TRGT_IF_PCI2 0x00100000
#define LAWAR_TRGT_IF_LBC 0x00400000
#define LAWAR_TRGT_IF_CCSR 0x00800000
#define LAWAR_TRGT_IF_DDR_INTERLEAVED 0x00B00000
#define LAWAR_TRGT_IF_RIO 0x00c00000
#define LAWAR_TRGT_IF_DDR 0x00f00000
#define LAWAR_TRGT_IF_DDR1 0x00f00000
#define LAWAR_TRGT_IF_DDR2 0x01600000
#define LAWAR_SIZE_BASE 0xa
#define LAWAR_SIZE_4K (LAWAR_SIZE_BASE+1)
#define LAWAR_SIZE_8K (LAWAR_SIZE_BASE+2)
#define LAWAR_SIZE_16K (LAWAR_SIZE_BASE+3)
#define LAWAR_SIZE_32K (LAWAR_SIZE_BASE+4)
#define LAWAR_SIZE_64K (LAWAR_SIZE_BASE+5)
#define LAWAR_SIZE_128K (LAWAR_SIZE_BASE+6)
#define LAWAR_SIZE_256K (LAWAR_SIZE_BASE+7)
#define LAWAR_SIZE_512K (LAWAR_SIZE_BASE+8)
#define LAWAR_SIZE_1M (LAWAR_SIZE_BASE+9)
#define LAWAR_SIZE_2M (LAWAR_SIZE_BASE+10)
#define LAWAR_SIZE_4M (LAWAR_SIZE_BASE+11)
#define LAWAR_SIZE_8M (LAWAR_SIZE_BASE+12)
#define LAWAR_SIZE_16M (LAWAR_SIZE_BASE+13)
#define LAWAR_SIZE_32M (LAWAR_SIZE_BASE+14)
#define LAWAR_SIZE_64M (LAWAR_SIZE_BASE+15)
#define LAWAR_SIZE_128M (LAWAR_SIZE_BASE+16)
#define LAWAR_SIZE_256M (LAWAR_SIZE_BASE+17)
#define LAWAR_SIZE_512M (LAWAR_SIZE_BASE+18)
#define LAWAR_SIZE_1G (LAWAR_SIZE_BASE+19)
#define LAWAR_SIZE_2G (LAWAR_SIZE_BASE+20)
#define LAWAR_SIZE_4G (LAWAR_SIZE_BASE+21)
#define LAWAR_SIZE_8G (LAWAR_SIZE_BASE+22)
#define LAWAR_SIZE_16G (LAWAR_SIZE_BASE+23)
#define LAWAR_SIZE_32G (LAWAR_SIZE_BASE+24)
#ifdef CONFIG_440SPE
/*----------------------------------------------------------------------------+
| Following instructions are not available in Book E mode of the GNU assembler.
+----------------------------------------------------------------------------*/
#define DCCCI(ra,rb) .long 0x7c000000|\
(ra<<16)|(rb<<11)|(454<<1)
#define ICCCI(ra,rb) .long 0x7c000000|\
(ra<<16)|(rb<<11)|(966<<1)
#define DCREAD(rt,ra,rb) .long 0x7c000000|\
(rt<<21)|(ra<<16)|(rb<<11)|(486<<1)
#define ICREAD(ra,rb) .long 0x7c000000|\
(ra<<16)|(rb<<11)|(998<<1)
#define TLBSX(rt,ra,rb) .long 0x7c000000|\
(rt<<21)|(ra<<16)|(rb<<11)|(914<<1)
#define TLBWE(rs,ra,ws) .long 0x7c000000|\
(rs<<21)|(ra<<16)|(ws<<11)|(978<<1)
#define TLBRE(rt,ra,ws) .long 0x7c000000|\
(rt<<21)|(ra<<16)|(ws<<11)|(946<<1)
#define TLBSXDOT(rt,ra,rb) .long 0x7c000001|\
(rt<<21)|(ra<<16)|(rb<<11)|(914<<1)
#define MSYNC .long 0x7c000000|\
(598<<1)
#define MBAR_INST .long 0x7c000000|\
(854<<1)
/*----------------------------------------------------------------------------+
| Following instruction is not available in PPC405 mode of the GNU assembler.
+----------------------------------------------------------------------------*/
#define TLBRE(rt,ra,ws) .long 0x7c000000|\
(rt<<21)|(ra<<16)|(ws<<11)|(946<<1)
#endif
#ifndef __ASSEMBLY__
#define MAP_ARCH_DEFAULT MAP_CACHED
#ifdef CONFIG_MMU
#define ARCH_HAS_REMAP
int arch_remap_range(void *_start, size_t size, unsigned flags);
#endif
#endif
#endif /* _PPC_MMU_H_ */
