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Diffstat (limited to 'arch/powerpc/include/asm/mmu.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu.h | 763 |
1 files changed, 763 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h new file mode 100644 index 0000000000..ce7f081005 --- /dev/null +++ b/arch/powerpc/include/asm/mmu.h @@ -0,0 +1,763 @@ +/* + * PowerPC memory management structures + */ + +#ifndef _PPC_MMU_H_ +#define _PPC_MMU_H_ + +#include <linux/config.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 */ + +#ifdef CONFIG_ADDR_MAP +extern void init_addr_map(void); +#endif + +typedef enum { + IBAT0 = 0, IBAT1, IBAT2, IBAT3, + DBAT0, DBAT1, DBAT2, DBAT3, +#ifdef CONFIG_HIGH_BATS + IBAT4, IBAT5, IBAT6, IBAT7, + DBAT4, DBAT5, DBAT6, DBAT7 +#endif +} 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); +extern void print_bats(void); + +#endif /* __ASSEMBLY__ */ + +#define BATU_VS 0x00000002 +#define BATU_VP 0x00000001 +#define BATU_INVALID 0x00000000 + +#define BATL_WRITETHROUGH 0x00000040 +#define BATL_CACHEINHIBIT 0x00000020 +#define BATL_MEMCOHERENCE 0x00000010 +#define BATL_GUARDEDSTORAGE 0x00000008 +#define BATL_NO_ACCESS 0x00000000 + +#define BATL_PP_MSK 0x00000003 +#define BATL_PP_00 0x00000000 /* No access */ +#define BATL_PP_01 0x00000001 /* Read-only */ +#define BATL_PP_10 0x00000002 /* Read-write */ +#define BATL_PP_11 0x00000003 + +#define BATL_PP_NO_ACCESS BATL_PP_00 +#define BATL_PP_RO BATL_PP_01 +#define BATL_PP_RW BATL_PP_10 + +/* BAT Block size values */ +#define BATU_BL_128K 0x00000000 +#define BATU_BL_256K 0x00000004 +#define BATU_BL_512K 0x0000000c +#define BATU_BL_1M 0x0000001c +#define BATU_BL_2M 0x0000003c +#define BATU_BL_4M 0x0000007c +#define BATU_BL_8M 0x000000fc +#define BATU_BL_16M 0x000001fc +#define BATU_BL_32M 0x000003fc +#define BATU_BL_64M 0x000007fc +#define BATU_BL_128M 0x00000ffc +#define BATU_BL_256M 0x00001ffc + +/* Block lengths for processors that support extended block length */ +#ifdef HID0_XBSEN +#define BATU_BL_512M 0x00003ffc +#define BATU_BL_1G 0x00007ffc +#define BATU_BL_2G 0x0000fffc +#define BATU_BL_4G 0x0001fffc +#define BATU_BL_MAX BATU_BL_4G +#else +#define BATU_BL_MAX BATU_BL_256M +#endif + +/* BAT Access Protection */ +#define BPP_XX 0x00 /* No access */ +#define BPP_RX 0x01 /* Read only */ +#define BPP_RW 0x02 /* Read/write */ + +/* Macros to get values from BATs, once data is in the BAT register format */ +#define BATU_VALID(x) (x & 0x3) +#define BATU_VADDR(x) (x & 0xfffe0000) +#define BATL_PADDR(x) ((phys_addr_t)((x & 0xfffe0000) \ + | ((x & 0x0e00ULL) << 24) \ + | ((x & 0x04ULL) << 30))) +#define BATU_SIZE(x) (1ULL << (fls((x & BATU_BL_MAX) >> 2) + 17)) + +/* bytes into BATU_BL */ +#define TO_BATU_BL(x) \ + (u32)((((1ull << __ilog2_u64((u64)x)) / (128 * 1024)) - 1) * 4) + +/* 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. + */ + +/* + * FSL Book-E 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 << 8) & 0x00000F00) + +#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 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_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_SPID0 0x3FFF0000 +#define MAS6_SPID1 0x00007FFE +#define MAS6_SAS 0x00000001 +#define MAS6_SPID MAS6_SPID0 + +#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_4K 1 +#define BOOKE_PAGESZ_16K 2 +#define BOOKE_PAGESZ_64K 3 +#define BOOKE_PAGESZ_256K 4 +#define BOOKE_PAGESZ_1M 5 +#define BOOKE_PAGESZ_4M 6 +#define BOOKE_PAGESZ_16M 7 +#define BOOKE_PAGESZ_64M 8 +#define BOOKE_PAGESZ_256M 9 +#define BOOKE_PAGESZ_1G 10 +#define BOOKE_PAGESZ_4G 11 +#define BOOKE_PAGESZ_16GB 12 +#define BOOKE_PAGESZ_64GB 13 +#define BOOKE_PAGESZ_256GB 14 +#define BOOKE_PAGESZ_1TB 15 + +#ifdef CONFIG_E500 +#ifndef __ASSEMBLY__ +extern void set_tlb(u8 tlb, u32 epn, u64 rpn, + u8 perms, u8 wimge, + u8 ts, u8 esel, u8 tsize, u8 iprot); +extern void disable_tlb(u8 esel); +extern void invalidate_tlb(u8 tlb); +extern void init_tlbs(void); +extern int find_tlb_idx(void *addr, u8 tlbsel); +extern void init_used_tlb_cams(void); +extern int find_free_tlbcam(void); + +extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg); + +extern void write_tlb(u32 _mas0, u32 _mas1, u32 _mas2, u32 _mas3, u32 _mas7); + +#define SET_TLB_ENTRY(_tlb, _epn, _rpn, _perms, _wimge, _ts, _esel, _sz, _iprot) \ + { .mas0 = FSL_BOOKE_MAS0(_tlb, _esel, 0), \ + .mas1 = FSL_BOOKE_MAS1(1, _iprot, 0, _ts, _sz), \ + .mas2 = FSL_BOOKE_MAS2(_epn, _wimge), \ + .mas3 = FSL_BOOKE_MAS3(_rpn, 0, _perms), \ + .mas7 = FSL_BOOKE_MAS7(_rpn), } + +struct fsl_e_tlb_entry { + u32 mas0; + u32 mas1; + u32 mas2; + u32 mas3; + u32 mas7; +}; + +extern struct fsl_e_tlb_entry tlb_table[]; +extern int num_tlb_entries; +#endif +#endif + +#ifdef CONFIG_E300 +#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_PCIE1 0x00200000 +#define LAWAR_TRGT_IF_PCIE2 0x00100000 +#define LAWAR_TRGT_IF_PCIE3 0x00300000 +#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) +#endif + +#ifdef CONFIG_440 +/* General */ +#define TLB_VALID 0x00000200 + +/* Supported page sizes */ + +#define SZ_1K 0x00000000 +#define SZ_4K 0x00000010 +#define SZ_16K 0x00000020 +#define SZ_64K 0x00000030 +#define SZ_256K 0x00000040 +#define SZ_1M 0x00000050 +#define SZ_16M 0x00000070 +#define SZ_256M 0x00000090 + +/* Storage attributes */ +#define SA_W 0x00000800 /* Write-through */ +#define SA_I 0x00000400 /* Caching inhibited */ +#define SA_M 0x00000200 /* Memory coherence */ +#define SA_G 0x00000100 /* Guarded */ +#define SA_E 0x00000080 /* Endian */ + +/* Access control */ +#define AC_X 0x00000024 /* Execute */ +#define AC_W 0x00000012 /* Write */ +#define AC_R 0x00000009 /* Read */ + +/* Some handy macros */ + +#define EPN(e) ((e) & 0xfffffc00) +#define TLB0(epn,sz) ((EPN((epn)) | (sz) | TLB_VALID )) +#define TLB1(rpn,erpn) (((rpn) & 0xfffffc00) | (erpn)) +#define TLB2(a) ((a) & 0x00000fbf) + +#define tlbtab_start\ + mflr r1 ;\ + bl 0f ; + +#define tlbtab_end\ + .long 0, 0, 0 ;\ +0: mflr r0 ;\ + mtlr r1 ;\ + blr ; + +#define tlbentry(epn,sz,rpn,erpn,attr)\ + .long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr) + +/*----------------------------------------------------------------------------+ +| TLB specific defines. ++----------------------------------------------------------------------------*/ +#define TLB_256MB_ALIGN_MASK 0xFF0000000ULL +#define TLB_16MB_ALIGN_MASK 0xFFF000000ULL +#define TLB_1MB_ALIGN_MASK 0xFFFF00000ULL +#define TLB_256KB_ALIGN_MASK 0xFFFFC0000ULL +#define TLB_64KB_ALIGN_MASK 0xFFFFF0000ULL +#define TLB_16KB_ALIGN_MASK 0xFFFFFC000ULL +#define TLB_4KB_ALIGN_MASK 0xFFFFFF000ULL +#define TLB_1KB_ALIGN_MASK 0xFFFFFFC00ULL +#define TLB_256MB_SIZE 0x10000000 +#define TLB_16MB_SIZE 0x01000000 +#define TLB_1MB_SIZE 0x00100000 +#define TLB_256KB_SIZE 0x00040000 +#define TLB_64KB_SIZE 0x00010000 +#define TLB_16KB_SIZE 0x00004000 +#define TLB_4KB_SIZE 0x00001000 +#define TLB_1KB_SIZE 0x00000400 + +#define TLB_WORD0_EPN_MASK 0xFFFFFC00 +#define TLB_WORD0_EPN_ENCODE(n) (((unsigned long)(n))&0xFFFFFC00) +#define TLB_WORD0_EPN_DECODE(n) (((unsigned long)(n))&0xFFFFFC00) +#define TLB_WORD0_V_MASK 0x00000200 +#define TLB_WORD0_V_ENABLE 0x00000200 +#define TLB_WORD0_V_DISABLE 0x00000000 +#define TLB_WORD0_TS_MASK 0x00000100 +#define TLB_WORD0_TS_1 0x00000100 +#define TLB_WORD0_TS_0 0x00000000 +#define TLB_WORD0_SIZE_MASK 0x000000F0 +#define TLB_WORD0_SIZE_1KB 0x00000000 +#define TLB_WORD0_SIZE_4KB 0x00000010 +#define TLB_WORD0_SIZE_16KB 0x00000020 +#define TLB_WORD0_SIZE_64KB 0x00000030 +#define TLB_WORD0_SIZE_256KB 0x00000040 +#define TLB_WORD0_SIZE_1MB 0x00000050 +#define TLB_WORD0_SIZE_16MB 0x00000070 +#define TLB_WORD0_SIZE_256MB 0x00000090 +#define TLB_WORD0_TPAR_MASK 0x0000000F +#define TLB_WORD0_TPAR_ENCODE(n) ((((unsigned long)(n))&0x0F)<<0) +#define TLB_WORD0_TPAR_DECODE(n) ((((unsigned long)(n))>>0)&0x0F) + +#define TLB_WORD1_RPN_MASK 0xFFFFFC00 +#define TLB_WORD1_RPN_ENCODE(n) (((unsigned long)(n))&0xFFFFFC00) +#define TLB_WORD1_RPN_DECODE(n) (((unsigned long)(n))&0xFFFFFC00) +#define TLB_WORD1_PAR1_MASK 0x00000300 +#define TLB_WORD1_PAR1_ENCODE(n) ((((unsigned long)(n))&0x03)<<8) +#define TLB_WORD1_PAR1_DECODE(n) ((((unsigned long)(n))>>8)&0x03) +#define TLB_WORD1_PAR1_0 0x00000000 +#define TLB_WORD1_PAR1_1 0x00000100 +#define TLB_WORD1_PAR1_2 0x00000200 +#define TLB_WORD1_PAR1_3 0x00000300 +#define TLB_WORD1_ERPN_MASK 0x0000000F +#define TLB_WORD1_ERPN_ENCODE(n) ((((unsigned long)(n))&0x0F)<<0) +#define TLB_WORD1_ERPN_DECODE(n) ((((unsigned long)(n))>>0)&0x0F) + +#define TLB_WORD2_PAR2_MASK 0xC0000000 +#define TLB_WORD2_PAR2_ENCODE(n) ((((unsigned long)(n))&0x03)<<30) +#define TLB_WORD2_PAR2_DECODE(n) ((((unsigned long)(n))>>30)&0x03) +#define TLB_WORD2_PAR2_0 0x00000000 +#define TLB_WORD2_PAR2_1 0x40000000 +#define TLB_WORD2_PAR2_2 0x80000000 +#define TLB_WORD2_PAR2_3 0xC0000000 +#define TLB_WORD2_U0_MASK 0x00008000 +#define TLB_WORD2_U0_ENABLE 0x00008000 +#define TLB_WORD2_U0_DISABLE 0x00000000 +#define TLB_WORD2_U1_MASK 0x00004000 +#define TLB_WORD2_U1_ENABLE 0x00004000 +#define TLB_WORD2_U1_DISABLE 0x00000000 +#define TLB_WORD2_U2_MASK 0x00002000 +#define TLB_WORD2_U2_ENABLE 0x00002000 +#define TLB_WORD2_U2_DISABLE 0x00000000 +#define TLB_WORD2_U3_MASK 0x00001000 +#define TLB_WORD2_U3_ENABLE 0x00001000 +#define TLB_WORD2_U3_DISABLE 0x00000000 +#define TLB_WORD2_W_MASK 0x00000800 +#define TLB_WORD2_W_ENABLE 0x00000800 +#define TLB_WORD2_W_DISABLE 0x00000000 +#define TLB_WORD2_I_MASK 0x00000400 +#define TLB_WORD2_I_ENABLE 0x00000400 +#define TLB_WORD2_I_DISABLE 0x00000000 +#define TLB_WORD2_M_MASK 0x00000200 +#define TLB_WORD2_M_ENABLE 0x00000200 +#define TLB_WORD2_M_DISABLE 0x00000000 +#define TLB_WORD2_G_MASK 0x00000100 +#define TLB_WORD2_G_ENABLE 0x00000100 +#define TLB_WORD2_G_DISABLE 0x00000000 +#define TLB_WORD2_E_MASK 0x00000080 +#define TLB_WORD2_E_ENABLE 0x00000080 +#define TLB_WORD2_E_DISABLE 0x00000000 +#define TLB_WORD2_UX_MASK 0x00000020 +#define TLB_WORD2_UX_ENABLE 0x00000020 +#define TLB_WORD2_UX_DISABLE 0x00000000 +#define TLB_WORD2_UW_MASK 0x00000010 +#define TLB_WORD2_UW_ENABLE 0x00000010 +#define TLB_WORD2_UW_DISABLE 0x00000000 +#define TLB_WORD2_UR_MASK 0x00000008 +#define TLB_WORD2_UR_ENABLE 0x00000008 +#define TLB_WORD2_UR_DISABLE 0x00000000 +#define TLB_WORD2_SX_MASK 0x00000004 +#define TLB_WORD2_SX_ENABLE 0x00000004 +#define TLB_WORD2_SX_DISABLE 0x00000000 +#define TLB_WORD2_SW_MASK 0x00000002 +#define TLB_WORD2_SW_ENABLE 0x00000002 +#define TLB_WORD2_SW_DISABLE 0x00000000 +#define TLB_WORD2_SR_MASK 0x00000001 +#define TLB_WORD2_SR_ENABLE 0x00000001 +#define TLB_WORD2_SR_DISABLE 0x00000000 + +/*----------------------------------------------------------------------------+ +| 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) + +#ifndef __ASSEMBLY__ +/* Prototypes */ +void mttlb1(unsigned long index, unsigned long value); +void mttlb2(unsigned long index, unsigned long value); +void mttlb3(unsigned long index, unsigned long value); +unsigned long mftlb1(unsigned long index); +unsigned long mftlb2(unsigned long index); +unsigned long mftlb3(unsigned long index); + +void program_tlb(u64 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value); +void remove_tlb(u32 vaddr, u32 size); +void change_tlb(u32 vaddr, u32 size, u32 tlb_word2_i_value); +#endif /* __ASSEMBLY__ */ + +#endif /* CONFIG_440 */ +#endif /* _PPC_MMU_H_ */ |
