1a47a12beSStefan Roese /* 2a47a12beSStefan Roese * PowerPC memory management structures 3a47a12beSStefan Roese */ 4a47a12beSStefan Roese 5a47a12beSStefan Roese #ifndef _PPC_MMU_H_ 6a47a12beSStefan Roese #define _PPC_MMU_H_ 7a47a12beSStefan Roese 8a47a12beSStefan Roese #ifndef __ASSEMBLY__ 9a47a12beSStefan Roese /* Hardware Page Table Entry */ 10a47a12beSStefan Roese typedef struct _PTE { 11a47a12beSStefan Roese #ifdef CONFIG_PPC64BRIDGE 12a47a12beSStefan Roese unsigned long long vsid:52; 13a47a12beSStefan Roese unsigned long api:5; 14a47a12beSStefan Roese unsigned long :5; 15a47a12beSStefan Roese unsigned long h:1; 16a47a12beSStefan Roese unsigned long v:1; 17a47a12beSStefan Roese unsigned long long rpn:52; 18a47a12beSStefan Roese #else /* CONFIG_PPC64BRIDGE */ 19a47a12beSStefan Roese unsigned long v:1; /* Entry is valid */ 20a47a12beSStefan Roese unsigned long vsid:24; /* Virtual segment identifier */ 21a47a12beSStefan Roese unsigned long h:1; /* Hash algorithm indicator */ 22a47a12beSStefan Roese unsigned long api:6; /* Abbreviated page index */ 23a47a12beSStefan Roese unsigned long rpn:20; /* Real (physical) page number */ 24a47a12beSStefan Roese #endif /* CONFIG_PPC64BRIDGE */ 25a47a12beSStefan Roese unsigned long :3; /* Unused */ 26a47a12beSStefan Roese unsigned long r:1; /* Referenced */ 27a47a12beSStefan Roese unsigned long c:1; /* Changed */ 28a47a12beSStefan Roese unsigned long w:1; /* Write-thru cache mode */ 29a47a12beSStefan Roese unsigned long i:1; /* Cache inhibited */ 30a47a12beSStefan Roese unsigned long m:1; /* Memory coherence */ 31a47a12beSStefan Roese unsigned long g:1; /* Guarded */ 32a47a12beSStefan Roese unsigned long :1; /* Unused */ 33a47a12beSStefan Roese unsigned long pp:2; /* Page protection */ 34a47a12beSStefan Roese } PTE; 35a47a12beSStefan Roese 36a47a12beSStefan Roese /* Values for PP (assumes Ks=0, Kp=1) */ 37a47a12beSStefan Roese #define PP_RWXX 0 /* Supervisor read/write, User none */ 38a47a12beSStefan Roese #define PP_RWRX 1 /* Supervisor read/write, User read */ 39a47a12beSStefan Roese #define PP_RWRW 2 /* Supervisor read/write, User read/write */ 40a47a12beSStefan Roese #define PP_RXRX 3 /* Supervisor read, User read */ 41a47a12beSStefan Roese 42a47a12beSStefan Roese /* Segment Register */ 43a47a12beSStefan Roese typedef struct _SEGREG { 44a47a12beSStefan Roese unsigned long t:1; /* Normal or I/O type */ 45a47a12beSStefan Roese unsigned long ks:1; /* Supervisor 'key' (normally 0) */ 46a47a12beSStefan Roese unsigned long kp:1; /* User 'key' (normally 1) */ 47a47a12beSStefan Roese unsigned long n:1; /* No-execute */ 48a47a12beSStefan Roese unsigned long :4; /* Unused */ 49a47a12beSStefan Roese unsigned long vsid:24; /* Virtual Segment Identifier */ 50a47a12beSStefan Roese } SEGREG; 51a47a12beSStefan Roese 52a47a12beSStefan Roese /* Block Address Translation (BAT) Registers */ 53a47a12beSStefan Roese typedef struct _P601_BATU { /* Upper part of BAT for 601 processor */ 54a47a12beSStefan Roese unsigned long bepi:15; /* Effective page index (virtual address) */ 55a47a12beSStefan Roese unsigned long :8; /* unused */ 56a47a12beSStefan Roese unsigned long w:1; 57a47a12beSStefan Roese unsigned long i:1; /* Cache inhibit */ 58a47a12beSStefan Roese unsigned long m:1; /* Memory coherence */ 59a47a12beSStefan Roese unsigned long ks:1; /* Supervisor key (normally 0) */ 60a47a12beSStefan Roese unsigned long kp:1; /* User key (normally 1) */ 61a47a12beSStefan Roese unsigned long pp:2; /* Page access protections */ 62a47a12beSStefan Roese } P601_BATU; 63a47a12beSStefan Roese 64a47a12beSStefan Roese typedef struct _BATU { /* Upper part of BAT (all except 601) */ 65a47a12beSStefan Roese #ifdef CONFIG_PPC64BRIDGE 66a47a12beSStefan Roese unsigned long long bepi:47; 67a47a12beSStefan Roese #else /* CONFIG_PPC64BRIDGE */ 68a47a12beSStefan Roese unsigned long bepi:15; /* Effective page index (virtual address) */ 69a47a12beSStefan Roese #endif /* CONFIG_PPC64BRIDGE */ 70a47a12beSStefan Roese unsigned long :4; /* Unused */ 71a47a12beSStefan Roese unsigned long bl:11; /* Block size mask */ 72a47a12beSStefan Roese unsigned long vs:1; /* Supervisor valid */ 73a47a12beSStefan Roese unsigned long vp:1; /* User valid */ 74a47a12beSStefan Roese } BATU; 75a47a12beSStefan Roese 76a47a12beSStefan Roese typedef struct _P601_BATL { /* Lower part of BAT for 601 processor */ 77a47a12beSStefan Roese unsigned long brpn:15; /* Real page index (physical address) */ 78a47a12beSStefan Roese unsigned long :10; /* Unused */ 79a47a12beSStefan Roese unsigned long v:1; /* Valid bit */ 80a47a12beSStefan Roese unsigned long bl:6; /* Block size mask */ 81a47a12beSStefan Roese } P601_BATL; 82a47a12beSStefan Roese 83a47a12beSStefan Roese typedef struct _BATL { /* Lower part of BAT (all except 601) */ 84a47a12beSStefan Roese #ifdef CONFIG_PPC64BRIDGE 85a47a12beSStefan Roese unsigned long long brpn:47; 86a47a12beSStefan Roese #else /* CONFIG_PPC64BRIDGE */ 87a47a12beSStefan Roese unsigned long brpn:15; /* Real page index (physical address) */ 88a47a12beSStefan Roese #endif /* CONFIG_PPC64BRIDGE */ 89a47a12beSStefan Roese unsigned long :10; /* Unused */ 90a47a12beSStefan Roese unsigned long w:1; /* Write-thru cache */ 91a47a12beSStefan Roese unsigned long i:1; /* Cache inhibit */ 92a47a12beSStefan Roese unsigned long m:1; /* Memory coherence */ 93a47a12beSStefan Roese unsigned long g:1; /* Guarded (MBZ in IBAT) */ 94a47a12beSStefan Roese unsigned long :1; /* Unused */ 95a47a12beSStefan Roese unsigned long pp:2; /* Page access protections */ 96a47a12beSStefan Roese } BATL; 97a47a12beSStefan Roese 98a47a12beSStefan Roese typedef struct _BAT { 99a47a12beSStefan Roese BATU batu; /* Upper register */ 100a47a12beSStefan Roese BATL batl; /* Lower register */ 101a47a12beSStefan Roese } BAT; 102a47a12beSStefan Roese 103a47a12beSStefan Roese typedef struct _P601_BAT { 104a47a12beSStefan Roese P601_BATU batu; /* Upper register */ 105a47a12beSStefan Roese P601_BATL batl; /* Lower register */ 106a47a12beSStefan Roese } P601_BAT; 107a47a12beSStefan Roese 108a47a12beSStefan Roese /* 109a47a12beSStefan Roese * Simulated two-level MMU. This structure is used by the kernel 110a47a12beSStefan Roese * to keep track of MMU mappings and is used to update/maintain 111a47a12beSStefan Roese * the hardware HASH table which is really a cache of mappings. 112a47a12beSStefan Roese * 113a47a12beSStefan Roese * The simulated structures mimic the hardware available on other 114a47a12beSStefan Roese * platforms, notably the 80x86 and 680x0. 115a47a12beSStefan Roese */ 116a47a12beSStefan Roese 117a47a12beSStefan Roese typedef struct _pte { 118a47a12beSStefan Roese unsigned long page_num:20; 119a47a12beSStefan Roese unsigned long flags:12; /* Page flags (some unused bits) */ 120a47a12beSStefan Roese } pte; 121a47a12beSStefan Roese 122a47a12beSStefan Roese #define PD_SHIFT (10+12) /* Page directory */ 123a47a12beSStefan Roese #define PD_MASK 0x02FF 124a47a12beSStefan Roese #define PT_SHIFT (12) /* Page Table */ 125a47a12beSStefan Roese #define PT_MASK 0x02FF 126a47a12beSStefan Roese #define PG_SHIFT (12) /* Page Entry */ 127a47a12beSStefan Roese 128a47a12beSStefan Roese 129a47a12beSStefan Roese /* MMU context */ 130a47a12beSStefan Roese 131a47a12beSStefan Roese typedef struct _MMU_context { 132a47a12beSStefan Roese SEGREG segs[16]; /* Segment registers */ 133a47a12beSStefan Roese pte **pmap; /* Two-level page-map structure */ 134a47a12beSStefan Roese } MMU_context; 135a47a12beSStefan Roese 136a47a12beSStefan Roese extern void _tlbie(unsigned long va); /* invalidate a TLB entry */ 137a47a12beSStefan Roese extern void _tlbia(void); /* invalidate all TLB entries */ 138a47a12beSStefan Roese 139a47a12beSStefan Roese #ifdef CONFIG_ADDR_MAP 140a47a12beSStefan Roese extern void init_addr_map(void); 141a47a12beSStefan Roese #endif 142a47a12beSStefan Roese 143a47a12beSStefan Roese typedef enum { 144a47a12beSStefan Roese IBAT0 = 0, IBAT1, IBAT2, IBAT3, 145a47a12beSStefan Roese DBAT0, DBAT1, DBAT2, DBAT3, 146a47a12beSStefan Roese #ifdef CONFIG_HIGH_BATS 147a47a12beSStefan Roese IBAT4, IBAT5, IBAT6, IBAT7, 148a47a12beSStefan Roese DBAT4, DBAT5, DBAT6, DBAT7 149a47a12beSStefan Roese #endif 150a47a12beSStefan Roese } ppc_bat_t; 151a47a12beSStefan Roese 152a47a12beSStefan Roese extern int read_bat(ppc_bat_t bat, unsigned long *upper, unsigned long *lower); 153a47a12beSStefan Roese extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower); 154a47a12beSStefan Roese extern void print_bats(void); 155a47a12beSStefan Roese 156a47a12beSStefan Roese #endif /* __ASSEMBLY__ */ 157a47a12beSStefan Roese 158a47a12beSStefan Roese #define BATU_VS 0x00000002 159a47a12beSStefan Roese #define BATU_VP 0x00000001 160a47a12beSStefan Roese #define BATU_INVALID 0x00000000 161a47a12beSStefan Roese 162a47a12beSStefan Roese #define BATL_WRITETHROUGH 0x00000040 163a47a12beSStefan Roese #define BATL_CACHEINHIBIT 0x00000020 164a47a12beSStefan Roese #define BATL_MEMCOHERENCE 0x00000010 165a47a12beSStefan Roese #define BATL_GUARDEDSTORAGE 0x00000008 166a47a12beSStefan Roese #define BATL_NO_ACCESS 0x00000000 167a47a12beSStefan Roese 168a47a12beSStefan Roese #define BATL_PP_MSK 0x00000003 169a47a12beSStefan Roese #define BATL_PP_00 0x00000000 /* No access */ 170a47a12beSStefan Roese #define BATL_PP_01 0x00000001 /* Read-only */ 171a47a12beSStefan Roese #define BATL_PP_10 0x00000002 /* Read-write */ 172a47a12beSStefan Roese #define BATL_PP_11 0x00000003 173a47a12beSStefan Roese 174a47a12beSStefan Roese #define BATL_PP_NO_ACCESS BATL_PP_00 175a47a12beSStefan Roese #define BATL_PP_RO BATL_PP_01 176a47a12beSStefan Roese #define BATL_PP_RW BATL_PP_10 177a47a12beSStefan Roese 178a47a12beSStefan Roese /* BAT Block size values */ 179a47a12beSStefan Roese #define BATU_BL_128K 0x00000000 180a47a12beSStefan Roese #define BATU_BL_256K 0x00000004 181a47a12beSStefan Roese #define BATU_BL_512K 0x0000000c 182a47a12beSStefan Roese #define BATU_BL_1M 0x0000001c 183a47a12beSStefan Roese #define BATU_BL_2M 0x0000003c 184a47a12beSStefan Roese #define BATU_BL_4M 0x0000007c 185a47a12beSStefan Roese #define BATU_BL_8M 0x000000fc 186a47a12beSStefan Roese #define BATU_BL_16M 0x000001fc 187a47a12beSStefan Roese #define BATU_BL_32M 0x000003fc 188a47a12beSStefan Roese #define BATU_BL_64M 0x000007fc 189a47a12beSStefan Roese #define BATU_BL_128M 0x00000ffc 190a47a12beSStefan Roese #define BATU_BL_256M 0x00001ffc 191a47a12beSStefan Roese 192a47a12beSStefan Roese /* Block lengths for processors that support extended block length */ 193a47a12beSStefan Roese #ifdef HID0_XBSEN 194a47a12beSStefan Roese #define BATU_BL_512M 0x00003ffc 195a47a12beSStefan Roese #define BATU_BL_1G 0x00007ffc 196a47a12beSStefan Roese #define BATU_BL_2G 0x0000fffc 197a47a12beSStefan Roese #define BATU_BL_4G 0x0001fffc 198a47a12beSStefan Roese #define BATU_BL_MAX BATU_BL_4G 199a47a12beSStefan Roese #else 200a47a12beSStefan Roese #define BATU_BL_MAX BATU_BL_256M 201a47a12beSStefan Roese #endif 202a47a12beSStefan Roese 203a47a12beSStefan Roese /* BAT Access Protection */ 204a47a12beSStefan Roese #define BPP_XX 0x00 /* No access */ 205a47a12beSStefan Roese #define BPP_RX 0x01 /* Read only */ 206a47a12beSStefan Roese #define BPP_RW 0x02 /* Read/write */ 207a47a12beSStefan Roese 208a47a12beSStefan Roese /* Macros to get values from BATs, once data is in the BAT register format */ 209a47a12beSStefan Roese #define BATU_VALID(x) (x & 0x3) 210a47a12beSStefan Roese #define BATU_VADDR(x) (x & 0xfffe0000) 211a47a12beSStefan Roese #define BATL_PADDR(x) ((phys_addr_t)((x & 0xfffe0000) \ 212a47a12beSStefan Roese | ((x & 0x0e00ULL) << 24) \ 213a47a12beSStefan Roese | ((x & 0x04ULL) << 30))) 214a47a12beSStefan Roese #define BATU_SIZE(x) (1ULL << (fls((x & BATU_BL_MAX) >> 2) + 17)) 215a47a12beSStefan Roese 216a47a12beSStefan Roese /* bytes into BATU_BL */ 217a47a12beSStefan Roese #define TO_BATU_BL(x) \ 218a47a12beSStefan Roese (u32)((((1ull << __ilog2_u64((u64)x)) / (128 * 1024)) - 1) * 4) 219a47a12beSStefan Roese 220a47a12beSStefan Roese /* Used to set up SDR1 register */ 221a47a12beSStefan Roese #define HASH_TABLE_SIZE_64K 0x00010000 222a47a12beSStefan Roese #define HASH_TABLE_SIZE_128K 0x00020000 223a47a12beSStefan Roese #define HASH_TABLE_SIZE_256K 0x00040000 224a47a12beSStefan Roese #define HASH_TABLE_SIZE_512K 0x00080000 225a47a12beSStefan Roese #define HASH_TABLE_SIZE_1M 0x00100000 226a47a12beSStefan Roese #define HASH_TABLE_SIZE_2M 0x00200000 227a47a12beSStefan Roese #define HASH_TABLE_SIZE_4M 0x00400000 228a47a12beSStefan Roese #define HASH_TABLE_MASK_64K 0x000 229a47a12beSStefan Roese #define HASH_TABLE_MASK_128K 0x001 230a47a12beSStefan Roese #define HASH_TABLE_MASK_256K 0x003 231a47a12beSStefan Roese #define HASH_TABLE_MASK_512K 0x007 232a47a12beSStefan Roese #define HASH_TABLE_MASK_1M 0x00F 233a47a12beSStefan Roese #define HASH_TABLE_MASK_2M 0x01F 234a47a12beSStefan Roese #define HASH_TABLE_MASK_4M 0x03F 235a47a12beSStefan Roese 236a47a12beSStefan Roese /* Control/status registers for the MPC8xx. 237a47a12beSStefan Roese * A write operation to these registers causes serialized access. 238a47a12beSStefan Roese * During software tablewalk, the registers used perform mask/shift-add 239a47a12beSStefan Roese * operations when written/read. A TLB entry is created when the Mx_RPN 240a47a12beSStefan Roese * is written, and the contents of several registers are used to 241a47a12beSStefan Roese * create the entry. 242a47a12beSStefan Roese */ 243a47a12beSStefan Roese #define MI_CTR 784 /* Instruction TLB control register */ 244a47a12beSStefan Roese #define MI_GPM 0x80000000 /* Set domain manager mode */ 245a47a12beSStefan Roese #define MI_PPM 0x40000000 /* Set subpage protection */ 246a47a12beSStefan Roese #define MI_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */ 247a47a12beSStefan Roese #define MI_RSV4I 0x08000000 /* Reserve 4 TLB entries */ 248a47a12beSStefan Roese #define MI_PPCS 0x02000000 /* Use MI_RPN prob/priv state */ 249a47a12beSStefan Roese #define MI_IDXMASK 0x00001f00 /* TLB index to be loaded */ 250a47a12beSStefan Roese #define MI_RESETVAL 0x00000000 /* Value of register at reset */ 251a47a12beSStefan Roese 252a47a12beSStefan Roese /* These are the Ks and Kp from the PowerPC books. For proper operation, 253a47a12beSStefan Roese * Ks = 0, Kp = 1. 254a47a12beSStefan Roese */ 255a47a12beSStefan Roese #define MI_AP 786 256a47a12beSStefan Roese #define MI_Ks 0x80000000 /* Should not be set */ 257a47a12beSStefan Roese #define MI_Kp 0x40000000 /* Should always be set */ 258a47a12beSStefan Roese 259a47a12beSStefan Roese /* The effective page number register. When read, contains the information 260a47a12beSStefan Roese * about the last instruction TLB miss. When MI_RPN is written, bits in 261a47a12beSStefan Roese * this register are used to create the TLB entry. 262a47a12beSStefan Roese */ 263a47a12beSStefan Roese #define MI_EPN 787 264a47a12beSStefan Roese #define MI_EPNMASK 0xfffff000 /* Effective page number for entry */ 265a47a12beSStefan Roese #define MI_EVALID 0x00000200 /* Entry is valid */ 266a47a12beSStefan Roese #define MI_ASIDMASK 0x0000000f /* ASID match value */ 267a47a12beSStefan Roese /* Reset value is undefined */ 268a47a12beSStefan Roese 269a47a12beSStefan Roese /* A "level 1" or "segment" or whatever you want to call it register. 270a47a12beSStefan Roese * For the instruction TLB, it contains bits that get loaded into the 271a47a12beSStefan Roese * TLB entry when the MI_RPN is written. 272a47a12beSStefan Roese */ 273a47a12beSStefan Roese #define MI_TWC 789 274a47a12beSStefan Roese #define MI_APG 0x000001e0 /* Access protection group (0) */ 275a47a12beSStefan Roese #define MI_GUARDED 0x00000010 /* Guarded storage */ 276a47a12beSStefan Roese #define MI_PSMASK 0x0000000c /* Mask of page size bits */ 277a47a12beSStefan Roese #define MI_PS8MEG 0x0000000c /* 8M page size */ 278a47a12beSStefan Roese #define MI_PS512K 0x00000004 /* 512K page size */ 279a47a12beSStefan Roese #define MI_PS4K_16K 0x00000000 /* 4K or 16K page size */ 280a47a12beSStefan Roese #define MI_SVALID 0x00000001 /* Segment entry is valid */ 281a47a12beSStefan Roese /* Reset value is undefined */ 282a47a12beSStefan Roese 283a47a12beSStefan Roese /* Real page number. Defined by the pte. Writing this register 284a47a12beSStefan Roese * causes a TLB entry to be created for the instruction TLB, using 285a47a12beSStefan Roese * additional information from the MI_EPN, and MI_TWC registers. 286a47a12beSStefan Roese */ 287a47a12beSStefan Roese #define MI_RPN 790 288a47a12beSStefan Roese 289a47a12beSStefan Roese /* Define an RPN value for mapping kernel memory to large virtual 290a47a12beSStefan Roese * pages for boot initialization. This has real page number of 0, 291a47a12beSStefan Roese * large page size, shared page, cache enabled, and valid. 292a47a12beSStefan Roese * Also mark all subpages valid and write access. 293a47a12beSStefan Roese */ 294a47a12beSStefan Roese #define MI_BOOTINIT 0x000001fd 295a47a12beSStefan Roese 296a47a12beSStefan Roese #define MD_CTR 792 /* Data TLB control register */ 297a47a12beSStefan Roese #define MD_GPM 0x80000000 /* Set domain manager mode */ 298a47a12beSStefan Roese #define MD_PPM 0x40000000 /* Set subpage protection */ 299a47a12beSStefan Roese #define MD_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */ 300a47a12beSStefan Roese #define MD_WTDEF 0x10000000 /* Set writethrough when MMU dis */ 301a47a12beSStefan Roese #define MD_RSV4I 0x08000000 /* Reserve 4 TLB entries */ 302a47a12beSStefan Roese #define MD_TWAM 0x04000000 /* Use 4K page hardware assist */ 303a47a12beSStefan Roese #define MD_PPCS 0x02000000 /* Use MI_RPN prob/priv state */ 304a47a12beSStefan Roese #define MD_IDXMASK 0x00001f00 /* TLB index to be loaded */ 305a47a12beSStefan Roese #define MD_RESETVAL 0x04000000 /* Value of register at reset */ 306a47a12beSStefan Roese 307a47a12beSStefan Roese #define M_CASID 793 /* Address space ID (context) to match */ 308a47a12beSStefan Roese #define MC_ASIDMASK 0x0000000f /* Bits used for ASID value */ 309a47a12beSStefan Roese 310a47a12beSStefan Roese 311a47a12beSStefan Roese /* These are the Ks and Kp from the PowerPC books. For proper operation, 312a47a12beSStefan Roese * Ks = 0, Kp = 1. 313a47a12beSStefan Roese */ 314a47a12beSStefan Roese #define MD_AP 794 315a47a12beSStefan Roese #define MD_Ks 0x80000000 /* Should not be set */ 316a47a12beSStefan Roese #define MD_Kp 0x40000000 /* Should always be set */ 317a47a12beSStefan Roese 318a47a12beSStefan Roese /* The effective page number register. When read, contains the information 319a47a12beSStefan Roese * about the last instruction TLB miss. When MD_RPN is written, bits in 320a47a12beSStefan Roese * this register are used to create the TLB entry. 321a47a12beSStefan Roese */ 322a47a12beSStefan Roese #define MD_EPN 795 323a47a12beSStefan Roese #define MD_EPNMASK 0xfffff000 /* Effective page number for entry */ 324a47a12beSStefan Roese #define MD_EVALID 0x00000200 /* Entry is valid */ 325a47a12beSStefan Roese #define MD_ASIDMASK 0x0000000f /* ASID match value */ 326a47a12beSStefan Roese /* Reset value is undefined */ 327a47a12beSStefan Roese 328a47a12beSStefan Roese /* The pointer to the base address of the first level page table. 329a47a12beSStefan Roese * During a software tablewalk, reading this register provides the address 330a47a12beSStefan Roese * of the entry associated with MD_EPN. 331a47a12beSStefan Roese */ 332a47a12beSStefan Roese #define M_TWB 796 333a47a12beSStefan Roese #define M_L1TB 0xfffff000 /* Level 1 table base address */ 334a47a12beSStefan Roese #define M_L1INDX 0x00000ffc /* Level 1 index, when read */ 335a47a12beSStefan Roese /* Reset value is undefined */ 336a47a12beSStefan Roese 337a47a12beSStefan Roese /* A "level 1" or "segment" or whatever you want to call it register. 338a47a12beSStefan Roese * For the data TLB, it contains bits that get loaded into the TLB entry 339a47a12beSStefan Roese * when the MD_RPN is written. It is also provides the hardware assist 340a47a12beSStefan Roese * for finding the PTE address during software tablewalk. 341a47a12beSStefan Roese */ 342a47a12beSStefan Roese #define MD_TWC 797 343a47a12beSStefan Roese #define MD_L2TB 0xfffff000 /* Level 2 table base address */ 344a47a12beSStefan Roese #define MD_L2INDX 0xfffffe00 /* Level 2 index (*pte), when read */ 345a47a12beSStefan Roese #define MD_APG 0x000001e0 /* Access protection group (0) */ 346a47a12beSStefan Roese #define MD_GUARDED 0x00000010 /* Guarded storage */ 347a47a12beSStefan Roese #define MD_PSMASK 0x0000000c /* Mask of page size bits */ 348a47a12beSStefan Roese #define MD_PS8MEG 0x0000000c /* 8M page size */ 349a47a12beSStefan Roese #define MD_PS512K 0x00000004 /* 512K page size */ 350a47a12beSStefan Roese #define MD_PS4K_16K 0x00000000 /* 4K or 16K page size */ 351a47a12beSStefan Roese #define MD_WT 0x00000002 /* Use writethrough page attribute */ 352a47a12beSStefan Roese #define MD_SVALID 0x00000001 /* Segment entry is valid */ 353a47a12beSStefan Roese /* Reset value is undefined */ 354a47a12beSStefan Roese 355a47a12beSStefan Roese 356a47a12beSStefan Roese /* Real page number. Defined by the pte. Writing this register 357a47a12beSStefan Roese * causes a TLB entry to be created for the data TLB, using 358a47a12beSStefan Roese * additional information from the MD_EPN, and MD_TWC registers. 359a47a12beSStefan Roese */ 360a47a12beSStefan Roese #define MD_RPN 798 361a47a12beSStefan Roese 362a47a12beSStefan Roese /* This is a temporary storage register that could be used to save 363a47a12beSStefan Roese * a processor working register during a tablewalk. 364a47a12beSStefan Roese */ 365a47a12beSStefan Roese #define M_TW 799 366a47a12beSStefan Roese 367a47a12beSStefan Roese /* 368a47a12beSStefan Roese * At present, all PowerPC 400-class processors share a similar TLB 369a47a12beSStefan Roese * architecture. The instruction and data sides share a unified, 370a47a12beSStefan Roese * 64-entry, fully-associative TLB which is maintained totally under 371a47a12beSStefan Roese * software control. In addition, the instruction side has a 372a47a12beSStefan Roese * hardware-managed, 4-entry, fully- associative TLB which serves as a 373a47a12beSStefan Roese * first level to the shared TLB. These two TLBs are known as the UTLB 374a47a12beSStefan Roese * and ITLB, respectively. 375a47a12beSStefan Roese */ 376a47a12beSStefan Roese 377a47a12beSStefan Roese #define PPC4XX_TLB_SIZE 64 378a47a12beSStefan Roese 379a47a12beSStefan Roese /* 380a47a12beSStefan Roese * TLB entries are defined by a "high" tag portion and a "low" data 381a47a12beSStefan Roese * portion. On all architectures, the data portion is 32-bits. 382a47a12beSStefan Roese * 383a47a12beSStefan Roese * TLB entries are managed entirely under software control by reading, 384a47a12beSStefan Roese * writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx 385a47a12beSStefan Roese * instructions. 386a47a12beSStefan Roese */ 387a47a12beSStefan Roese 388a47a12beSStefan Roese /* 389a47a12beSStefan Roese * FSL Book-E support 390a47a12beSStefan Roese */ 391a47a12beSStefan Roese 392a47a12beSStefan Roese #define MAS0_TLBSEL_MSK 0x30000000 3935c4a3d43STimur Tabi #define MAS0_TLBSEL(x) (((x) << 28) & MAS0_TLBSEL_MSK) 394a47a12beSStefan Roese #define MAS0_ESEL_MSK 0x0FFF0000 3955c4a3d43STimur Tabi #define MAS0_ESEL(x) (((x) << 16) & MAS0_ESEL_MSK) 396a47a12beSStefan Roese #define MAS0_NV(x) ((x) & 0x00000FFF) 397a47a12beSStefan Roese 398a47a12beSStefan Roese #define MAS1_VALID 0x80000000 399a47a12beSStefan Roese #define MAS1_IPROT 0x40000000 4005c4a3d43STimur Tabi #define MAS1_TID(x) (((x) << 16) & 0x3FFF0000) 401a47a12beSStefan Roese #define MAS1_TS 0x00001000 40231d084ddSScott Wood #define MAS1_TSIZE(x) (((x) << 7) & 0x00000F80) 40331d084ddSScott Wood #define TSIZE_TO_BYTES(x) (1ULL << ((x) + 10)) 404a47a12beSStefan Roese 405a47a12beSStefan Roese #define MAS2_EPN 0xFFFFF000 406a47a12beSStefan Roese #define MAS2_X0 0x00000040 407a47a12beSStefan Roese #define MAS2_X1 0x00000020 408a47a12beSStefan Roese #define MAS2_W 0x00000010 409a47a12beSStefan Roese #define MAS2_I 0x00000008 410a47a12beSStefan Roese #define MAS2_M 0x00000004 411a47a12beSStefan Roese #define MAS2_G 0x00000002 412a47a12beSStefan Roese #define MAS2_E 0x00000001 413a47a12beSStefan Roese 414a47a12beSStefan Roese #define MAS3_RPN 0xFFFFF000 415a47a12beSStefan Roese #define MAS3_U0 0x00000200 416a47a12beSStefan Roese #define MAS3_U1 0x00000100 417a47a12beSStefan Roese #define MAS3_U2 0x00000080 418a47a12beSStefan Roese #define MAS3_U3 0x00000040 419a47a12beSStefan Roese #define MAS3_UX 0x00000020 420a47a12beSStefan Roese #define MAS3_SX 0x00000010 421a47a12beSStefan Roese #define MAS3_UW 0x00000008 422a47a12beSStefan Roese #define MAS3_SW 0x00000004 423a47a12beSStefan Roese #define MAS3_UR 0x00000002 424a47a12beSStefan Roese #define MAS3_SR 0x00000001 425a47a12beSStefan Roese 426a47a12beSStefan Roese #define MAS4_TLBSELD(x) MAS0_TLBSEL(x) 427a47a12beSStefan Roese #define MAS4_TIDDSEL 0x000F0000 428a47a12beSStefan Roese #define MAS4_TSIZED(x) MAS1_TSIZE(x) 429a47a12beSStefan Roese #define MAS4_X0D 0x00000040 430a47a12beSStefan Roese #define MAS4_X1D 0x00000020 431a47a12beSStefan Roese #define MAS4_WD 0x00000010 432a47a12beSStefan Roese #define MAS4_ID 0x00000008 433a47a12beSStefan Roese #define MAS4_MD 0x00000004 434a47a12beSStefan Roese #define MAS4_GD 0x00000002 435a47a12beSStefan Roese #define MAS4_ED 0x00000001 436a47a12beSStefan Roese 437a47a12beSStefan Roese #define MAS6_SPID0 0x3FFF0000 438a47a12beSStefan Roese #define MAS6_SPID1 0x00007FFE 439a47a12beSStefan Roese #define MAS6_SAS 0x00000001 440a47a12beSStefan Roese #define MAS6_SPID MAS6_SPID0 441a47a12beSStefan Roese 442a47a12beSStefan Roese #define MAS7_RPN 0xFFFFFFFF 443a47a12beSStefan Roese 444a47a12beSStefan Roese #define FSL_BOOKE_MAS0(tlbsel,esel,nv) \ 445a47a12beSStefan Roese (MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) | MAS0_NV(nv)) 446a47a12beSStefan Roese #define FSL_BOOKE_MAS1(v,iprot,tid,ts,tsize) \ 447a47a12beSStefan Roese ((((v) << 31) & MAS1_VALID) |\ 448a47a12beSStefan Roese (((iprot) << 30) & MAS1_IPROT) |\ 449a47a12beSStefan Roese (MAS1_TID(tid)) |\ 450a47a12beSStefan Roese (((ts) << 12) & MAS1_TS) |\ 451a47a12beSStefan Roese (MAS1_TSIZE(tsize))) 452a47a12beSStefan Roese #define FSL_BOOKE_MAS2(epn, wimge) \ 453a47a12beSStefan Roese (((epn) & MAS3_RPN) | (wimge)) 454a47a12beSStefan Roese #define FSL_BOOKE_MAS3(rpn, user, perms) \ 455a47a12beSStefan Roese (((rpn) & MAS3_RPN) | (user) | (perms)) 456a47a12beSStefan Roese #define FSL_BOOKE_MAS7(rpn) \ 457a47a12beSStefan Roese (((u64)(rpn)) >> 32) 458a47a12beSStefan Roese 459a47a12beSStefan Roese #define BOOKE_PAGESZ_1K 0 46031d084ddSScott Wood #define BOOKE_PAGESZ_2K 1 46131d084ddSScott Wood #define BOOKE_PAGESZ_4K 2 46231d084ddSScott Wood #define BOOKE_PAGESZ_8K 3 46331d084ddSScott Wood #define BOOKE_PAGESZ_16K 4 46431d084ddSScott Wood #define BOOKE_PAGESZ_32K 5 46531d084ddSScott Wood #define BOOKE_PAGESZ_64K 6 46631d084ddSScott Wood #define BOOKE_PAGESZ_128K 7 46731d084ddSScott Wood #define BOOKE_PAGESZ_256K 8 46831d084ddSScott Wood #define BOOKE_PAGESZ_512K 9 46931d084ddSScott Wood #define BOOKE_PAGESZ_1M 10 47031d084ddSScott Wood #define BOOKE_PAGESZ_2M 11 47131d084ddSScott Wood #define BOOKE_PAGESZ_4M 12 47231d084ddSScott Wood #define BOOKE_PAGESZ_8M 13 47331d084ddSScott Wood #define BOOKE_PAGESZ_16M 14 47431d084ddSScott Wood #define BOOKE_PAGESZ_32M 15 47531d084ddSScott Wood #define BOOKE_PAGESZ_64M 16 47631d084ddSScott Wood #define BOOKE_PAGESZ_128M 17 47731d084ddSScott Wood #define BOOKE_PAGESZ_256M 18 47831d084ddSScott Wood #define BOOKE_PAGESZ_512M 19 47931d084ddSScott Wood #define BOOKE_PAGESZ_1G 20 48031d084ddSScott Wood #define BOOKE_PAGESZ_2G 21 48131d084ddSScott Wood #define BOOKE_PAGESZ_4G 22 48231d084ddSScott Wood #define BOOKE_PAGESZ_8G 23 48331d084ddSScott Wood #define BOOKE_PAGESZ_16GB 24 48431d084ddSScott Wood #define BOOKE_PAGESZ_32GB 25 48531d084ddSScott Wood #define BOOKE_PAGESZ_64GB 26 48631d084ddSScott Wood #define BOOKE_PAGESZ_128GB 27 48731d084ddSScott Wood #define BOOKE_PAGESZ_256GB 28 48831d084ddSScott Wood #define BOOKE_PAGESZ_512GB 29 48931d084ddSScott Wood #define BOOKE_PAGESZ_1TB 30 49031d084ddSScott Wood #define BOOKE_PAGESZ_2TB 31 491a47a12beSStefan Roese 4923ea21536SScott Wood #define TLBIVAX_ALL 4 4933ea21536SScott Wood #define TLBIVAX_TLB0 0 4943ea21536SScott Wood #define TLBIVAX_TLB1 8 4953ea21536SScott Wood 496a47a12beSStefan Roese #ifdef CONFIG_E500 497a47a12beSStefan Roese #ifndef __ASSEMBLY__ 498a47a12beSStefan Roese extern void set_tlb(u8 tlb, u32 epn, u64 rpn, 499a47a12beSStefan Roese u8 perms, u8 wimge, 500a47a12beSStefan Roese u8 ts, u8 esel, u8 tsize, u8 iprot); 501a47a12beSStefan Roese extern void disable_tlb(u8 esel); 502a47a12beSStefan Roese extern void invalidate_tlb(u8 tlb); 503a47a12beSStefan Roese extern void init_tlbs(void); 504a47a12beSStefan Roese extern int find_tlb_idx(void *addr, u8 tlbsel); 505a47a12beSStefan Roese extern void init_used_tlb_cams(void); 506a47a12beSStefan Roese extern int find_free_tlbcam(void); 50770e02bcaSBecky Bruce extern void print_tlbcam(void); 508a47a12beSStefan Roese 509a47a12beSStefan Roese extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg); 5109cdfe281SBecky Bruce extern void clear_ddr_tlbs(unsigned int memsize_in_meg); 511a47a12beSStefan Roese 512*f29f804aSAlexander Graf enum tlb_map_type { 513*f29f804aSAlexander Graf TLB_MAP_RAM, 514*f29f804aSAlexander Graf TLB_MAP_IO, 515*f29f804aSAlexander Graf }; 516*f29f804aSAlexander Graf 517*f29f804aSAlexander Graf extern uint64_t tlb_map_range(ulong v_addr, phys_addr_t p_addr, uint64_t size, 518*f29f804aSAlexander Graf enum tlb_map_type map_type); 519*f29f804aSAlexander Graf 520a47a12beSStefan Roese extern void write_tlb(u32 _mas0, u32 _mas1, u32 _mas2, u32 _mas3, u32 _mas7); 521a47a12beSStefan Roese 522a47a12beSStefan Roese #define SET_TLB_ENTRY(_tlb, _epn, _rpn, _perms, _wimge, _ts, _esel, _sz, _iprot) \ 523a47a12beSStefan Roese { .mas0 = FSL_BOOKE_MAS0(_tlb, _esel, 0), \ 524a47a12beSStefan Roese .mas1 = FSL_BOOKE_MAS1(1, _iprot, 0, _ts, _sz), \ 525a47a12beSStefan Roese .mas2 = FSL_BOOKE_MAS2(_epn, _wimge), \ 526a47a12beSStefan Roese .mas3 = FSL_BOOKE_MAS3(_rpn, 0, _perms), \ 527a47a12beSStefan Roese .mas7 = FSL_BOOKE_MAS7(_rpn), } 528a47a12beSStefan Roese 529a47a12beSStefan Roese struct fsl_e_tlb_entry { 530a47a12beSStefan Roese u32 mas0; 531a47a12beSStefan Roese u32 mas1; 532a47a12beSStefan Roese u32 mas2; 533a47a12beSStefan Roese u32 mas3; 534a47a12beSStefan Roese u32 mas7; 535a47a12beSStefan Roese }; 536a47a12beSStefan Roese 537a47a12beSStefan Roese extern struct fsl_e_tlb_entry tlb_table[]; 538a47a12beSStefan Roese extern int num_tlb_entries; 539a47a12beSStefan Roese #endif 540a47a12beSStefan Roese #endif 541a47a12beSStefan Roese 542a47a12beSStefan Roese #ifdef CONFIG_E300 543a47a12beSStefan Roese #define LAWAR_EN 0x80000000 544a47a12beSStefan Roese #define LAWAR_SIZE 0x0000003F 545a47a12beSStefan Roese 546a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCI 0x00000000 547a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCI1 0x00000000 548a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIX 0x00000000 549a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCI2 0x00100000 550a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIE1 0x00200000 551a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIE2 0x00100000 552a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIE3 0x00300000 553a47a12beSStefan Roese #define LAWAR_TRGT_IF_LBC 0x00400000 554a47a12beSStefan Roese #define LAWAR_TRGT_IF_CCSR 0x00800000 555a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR_INTERLEAVED 0x00B00000 556a47a12beSStefan Roese #define LAWAR_TRGT_IF_RIO 0x00c00000 557a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR 0x00f00000 558a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR1 0x00f00000 559a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR2 0x01600000 560a47a12beSStefan Roese 561a47a12beSStefan Roese #define LAWAR_SIZE_BASE 0xa 562a47a12beSStefan Roese #define LAWAR_SIZE_4K (LAWAR_SIZE_BASE+1) 563a47a12beSStefan Roese #define LAWAR_SIZE_8K (LAWAR_SIZE_BASE+2) 564a47a12beSStefan Roese #define LAWAR_SIZE_16K (LAWAR_SIZE_BASE+3) 565a47a12beSStefan Roese #define LAWAR_SIZE_32K (LAWAR_SIZE_BASE+4) 566a47a12beSStefan Roese #define LAWAR_SIZE_64K (LAWAR_SIZE_BASE+5) 567a47a12beSStefan Roese #define LAWAR_SIZE_128K (LAWAR_SIZE_BASE+6) 568a47a12beSStefan Roese #define LAWAR_SIZE_256K (LAWAR_SIZE_BASE+7) 569a47a12beSStefan Roese #define LAWAR_SIZE_512K (LAWAR_SIZE_BASE+8) 570a47a12beSStefan Roese #define LAWAR_SIZE_1M (LAWAR_SIZE_BASE+9) 571a47a12beSStefan Roese #define LAWAR_SIZE_2M (LAWAR_SIZE_BASE+10) 572a47a12beSStefan Roese #define LAWAR_SIZE_4M (LAWAR_SIZE_BASE+11) 573a47a12beSStefan Roese #define LAWAR_SIZE_8M (LAWAR_SIZE_BASE+12) 574a47a12beSStefan Roese #define LAWAR_SIZE_16M (LAWAR_SIZE_BASE+13) 575a47a12beSStefan Roese #define LAWAR_SIZE_32M (LAWAR_SIZE_BASE+14) 576a47a12beSStefan Roese #define LAWAR_SIZE_64M (LAWAR_SIZE_BASE+15) 577a47a12beSStefan Roese #define LAWAR_SIZE_128M (LAWAR_SIZE_BASE+16) 578a47a12beSStefan Roese #define LAWAR_SIZE_256M (LAWAR_SIZE_BASE+17) 579a47a12beSStefan Roese #define LAWAR_SIZE_512M (LAWAR_SIZE_BASE+18) 580a47a12beSStefan Roese #define LAWAR_SIZE_1G (LAWAR_SIZE_BASE+19) 581a47a12beSStefan Roese #define LAWAR_SIZE_2G (LAWAR_SIZE_BASE+20) 582a47a12beSStefan Roese #define LAWAR_SIZE_4G (LAWAR_SIZE_BASE+21) 583a47a12beSStefan Roese #define LAWAR_SIZE_8G (LAWAR_SIZE_BASE+22) 584a47a12beSStefan Roese #define LAWAR_SIZE_16G (LAWAR_SIZE_BASE+23) 585a47a12beSStefan Roese #define LAWAR_SIZE_32G (LAWAR_SIZE_BASE+24) 586a47a12beSStefan Roese #endif 587a47a12beSStefan Roese 588a47a12beSStefan Roese #endif /* _PPC_MMU_H_ */ 589