Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: pgtable.h,v 1.156 2002/02/09 19:49:31 davem Exp $ |
| 2 | * pgtable.h: SpitFire page table operations. |
| 3 | * |
| 4 | * Copyright 1996,1997 David S. Miller (davem@caip.rutgers.edu) |
| 5 | * Copyright 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 6 | */ |
| 7 | |
| 8 | #ifndef _SPARC64_PGTABLE_H |
| 9 | #define _SPARC64_PGTABLE_H |
| 10 | |
| 11 | /* This file contains the functions and defines necessary to modify and use |
| 12 | * the SpitFire page tables. |
| 13 | */ |
| 14 | |
| 15 | #include <asm-generic/pgtable-nopud.h> |
| 16 | |
| 17 | #include <linux/config.h> |
| 18 | #include <linux/compiler.h> |
| 19 | #include <asm/types.h> |
| 20 | #include <asm/spitfire.h> |
| 21 | #include <asm/asi.h> |
| 22 | #include <asm/system.h> |
| 23 | #include <asm/page.h> |
| 24 | #include <asm/processor.h> |
| 25 | #include <asm/const.h> |
| 26 | |
David S. Miller | 729b4f7 | 2005-09-20 12:18:38 -0700 | [diff] [blame] | 27 | /* The kernel image occupies 0x4000000 to 0x1000000 (4MB --> 32MB). |
David S. Miller | 74bf431 | 2006-01-31 18:29:18 -0800 | [diff] [blame] | 28 | * The page copy blockops can use 0x2000000 to 0x4000000. |
| 29 | * The TSB is mapped in the 0x4000000 to 0x6000000 range. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | * The PROM resides in an area spanning 0xf0000000 to 0x100000000. |
David S. Miller | 729b4f7 | 2005-09-20 12:18:38 -0700 | [diff] [blame] | 31 | * The vmalloc area spans 0x100000000 to 0x200000000. |
| 32 | * Since modules need to be in the lowest 32-bits of the address space, |
| 33 | * we place them right before the OBP area from 0x10000000 to 0xf0000000. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | * There is a single static kernel PMD which maps from 0x0 to address |
| 35 | * 0x400000000. |
| 36 | */ |
David S. Miller | 729b4f7 | 2005-09-20 12:18:38 -0700 | [diff] [blame] | 37 | #define TLBTEMP_BASE _AC(0x0000000002000000,UL) |
David S. Miller | 74bf431 | 2006-01-31 18:29:18 -0800 | [diff] [blame] | 38 | #define TSBMAP_BASE _AC(0x0000000004000000,UL) |
David S. Miller | 729b4f7 | 2005-09-20 12:18:38 -0700 | [diff] [blame] | 39 | #define MODULES_VADDR _AC(0x0000000010000000,UL) |
| 40 | #define MODULES_LEN _AC(0x00000000e0000000,UL) |
| 41 | #define MODULES_END _AC(0x00000000f0000000,UL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #define LOW_OBP_ADDRESS _AC(0x00000000f0000000,UL) |
| 43 | #define HI_OBP_ADDRESS _AC(0x0000000100000000,UL) |
David S. Miller | 729b4f7 | 2005-09-20 12:18:38 -0700 | [diff] [blame] | 44 | #define VMALLOC_START _AC(0x0000000100000000,UL) |
| 45 | #define VMALLOC_END _AC(0x0000000200000000,UL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | /* XXX All of this needs to be rethought so we can take advantage |
| 48 | * XXX cheetah's full 64-bit virtual address space, ie. no more hole |
| 49 | * XXX in the middle like on spitfire. -DaveM |
| 50 | */ |
| 51 | /* |
| 52 | * Given a virtual address, the lowest PAGE_SHIFT bits determine offset |
| 53 | * into the page; the next higher PAGE_SHIFT-3 bits determine the pte# |
| 54 | * in the proper pagetable (the -3 is from the 8 byte ptes, and each page |
| 55 | * table is a single page long). The next higher PMD_BITS determine pmd# |
| 56 | * in the proper pmdtable (where we must have PMD_BITS <= (PAGE_SHIFT-2) |
| 57 | * since the pmd entries are 4 bytes, and each pmd page is a single page |
| 58 | * long). Finally, the higher few bits determine pgde#. |
| 59 | */ |
| 60 | |
| 61 | /* PMD_SHIFT determines the size of the area a second-level page |
| 62 | * table can map |
| 63 | */ |
| 64 | #define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3)) |
David S. Miller | 5642530 | 2005-09-25 16:46:57 -0700 | [diff] [blame] | 65 | #define PMD_SIZE (_AC(1,UL) << PMD_SHIFT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | #define PMD_MASK (~(PMD_SIZE-1)) |
| 67 | #define PMD_BITS (PAGE_SHIFT - 2) |
| 68 | |
| 69 | /* PGDIR_SHIFT determines what a third-level page table entry can map */ |
| 70 | #define PGDIR_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3) + PMD_BITS) |
David S. Miller | 5642530 | 2005-09-25 16:46:57 -0700 | [diff] [blame] | 71 | #define PGDIR_SIZE (_AC(1,UL) << PGDIR_SHIFT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) |
| 73 | #define PGDIR_BITS (PAGE_SHIFT - 2) |
| 74 | |
| 75 | #ifndef __ASSEMBLY__ |
| 76 | |
| 77 | #include <linux/sched.h> |
| 78 | |
| 79 | /* Entries per page directory level. */ |
| 80 | #define PTRS_PER_PTE (1UL << (PAGE_SHIFT-3)) |
| 81 | #define PTRS_PER_PMD (1UL << PMD_BITS) |
| 82 | #define PTRS_PER_PGD (1UL << PGDIR_BITS) |
| 83 | |
| 84 | /* Kernel has a separate 44bit address space. */ |
Hugh Dickins | d455a36 | 2005-04-19 13:29:23 -0700 | [diff] [blame] | 85 | #define FIRST_USER_ADDRESS 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | #define pte_ERROR(e) __builtin_trap() |
| 88 | #define pmd_ERROR(e) __builtin_trap() |
| 89 | #define pgd_ERROR(e) __builtin_trap() |
| 90 | |
| 91 | #endif /* !(__ASSEMBLY__) */ |
| 92 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 93 | /* PTE bits which are the same in SUN4U and SUN4V format. */ |
David S. Miller | ff02e0d | 2006-02-12 17:07:51 -0800 | [diff] [blame] | 94 | #define _PAGE_VALID _AC(0x8000000000000000,UL) /* Valid TTE */ |
| 95 | #define _PAGE_R _AC(0x8000000000000000,UL) /* Keep ref bit uptodate*/ |
| 96 | |
| 97 | /* SUN4U pte bits... */ |
| 98 | #define _PAGE_SZ4MB_4U _AC(0x6000000000000000,UL) /* 4MB Page */ |
| 99 | #define _PAGE_SZ512K_4U _AC(0x4000000000000000,UL) /* 512K Page */ |
| 100 | #define _PAGE_SZ64K_4U _AC(0x2000000000000000,UL) /* 64K Page */ |
| 101 | #define _PAGE_SZ8K_4U _AC(0x0000000000000000,UL) /* 8K Page */ |
| 102 | #define _PAGE_NFO_4U _AC(0x1000000000000000,UL) /* No Fault Only */ |
| 103 | #define _PAGE_IE_4U _AC(0x0800000000000000,UL) /* Invert Endianness */ |
| 104 | #define _PAGE_SOFT2_4U _AC(0x07FC000000000000,UL) /* Software bits, set 2 */ |
| 105 | #define _PAGE_RES1_4U _AC(0x0002000000000000,UL) /* Reserved */ |
| 106 | #define _PAGE_SZ32MB_4U _AC(0x0001000000000000,UL) /* (Panther) 32MB page */ |
| 107 | #define _PAGE_SZ256MB_4U _AC(0x2001000000000000,UL) /* (Panther) 256MB page */ |
| 108 | #define _PAGE_SN_4U _AC(0x0000800000000000,UL) /* (Cheetah) Snoop */ |
| 109 | #define _PAGE_RES2_4U _AC(0x0000780000000000,UL) /* Reserved */ |
| 110 | #define _PAGE_PADDR_4U _AC(0x000007FFFFFFE000,UL) /* (Cheetah) pa[42:13] */ |
| 111 | #define _PAGE_SOFT_4U _AC(0x0000000000001F80,UL) /* Software bits: */ |
| 112 | #define _PAGE_EXEC_4U _AC(0x0000000000001000,UL) /* Executable SW bit */ |
| 113 | #define _PAGE_MODIFIED_4U _AC(0x0000000000000800,UL) /* Modified (dirty) */ |
| 114 | #define _PAGE_FILE_4U _AC(0x0000000000000800,UL) /* Pagecache page */ |
| 115 | #define _PAGE_ACCESSED_4U _AC(0x0000000000000400,UL) /* Accessed (ref'd) */ |
| 116 | #define _PAGE_READ_4U _AC(0x0000000000000200,UL) /* Readable SW Bit */ |
| 117 | #define _PAGE_WRITE_4U _AC(0x0000000000000100,UL) /* Writable SW Bit */ |
| 118 | #define _PAGE_PRESENT_4U _AC(0x0000000000000080,UL) /* Present */ |
| 119 | #define _PAGE_L_4U _AC(0x0000000000000040,UL) /* Locked TTE */ |
| 120 | #define _PAGE_CP_4U _AC(0x0000000000000020,UL) /* Cacheable in P-Cache */ |
| 121 | #define _PAGE_CV_4U _AC(0x0000000000000010,UL) /* Cacheable in V-Cache */ |
| 122 | #define _PAGE_E_4U _AC(0x0000000000000008,UL) /* side-Effect */ |
| 123 | #define _PAGE_P_4U _AC(0x0000000000000004,UL) /* Privileged Page */ |
| 124 | #define _PAGE_W_4U _AC(0x0000000000000002,UL) /* Writable */ |
| 125 | |
| 126 | /* SUN4V pte bits... */ |
| 127 | #define _PAGE_NFO_4V _AC(0x4000000000000000,UL) /* No Fault Only */ |
| 128 | #define _PAGE_SOFT2_4V _AC(0x3F00000000000000,UL) /* Software bits, set 2 */ |
| 129 | #define _PAGE_MODIFIED_4V _AC(0x2000000000000000,UL) /* Modified (dirty) */ |
| 130 | #define _PAGE_ACCESSED_4V _AC(0x1000000000000000,UL) /* Accessed (ref'd) */ |
| 131 | #define _PAGE_READ_4V _AC(0x0800000000000000,UL) /* Readable SW Bit */ |
| 132 | #define _PAGE_WRITE_4V _AC(0x0400000000000000,UL) /* Writable SW Bit */ |
| 133 | #define _PAGE_PADDR_4V _AC(0x00FFFFFFFFFFE000,UL) /* paddr[55:13] */ |
| 134 | #define _PAGE_IE_4V _AC(0x0000000000001000,UL) /* Invert Endianness */ |
| 135 | #define _PAGE_E_4V _AC(0x0000000000000800,UL) /* side-Effect */ |
| 136 | #define _PAGE_CP_4V _AC(0x0000000000000400,UL) /* Cacheable in P-Cache */ |
| 137 | #define _PAGE_CV_4V _AC(0x0000000000000200,UL) /* Cacheable in V-Cache */ |
| 138 | #define _PAGE_P_4V _AC(0x0000000000000100,UL) /* Privileged Page */ |
| 139 | #define _PAGE_EXEC_4V _AC(0x0000000000000080,UL) /* Executable Page */ |
| 140 | #define _PAGE_W_4V _AC(0x0000000000000040,UL) /* Writable */ |
| 141 | #define _PAGE_SOFT_4V _AC(0x0000000000000030,UL) /* Software bits */ |
| 142 | #define _PAGE_FILE_4V _AC(0x0000000000000020,UL) /* Pagecache page */ |
| 143 | #define _PAGE_PRESENT_4V _AC(0x0000000000000010,UL) /* Present */ |
| 144 | #define _PAGE_RESV_4V _AC(0x0000000000000008,UL) /* Reserved */ |
| 145 | #define _PAGE_SZ16GB_4V _AC(0x0000000000000007,UL) /* 16GB Page */ |
| 146 | #define _PAGE_SZ2GB_4V _AC(0x0000000000000006,UL) /* 2GB Page */ |
| 147 | #define _PAGE_SZ256MB_4V _AC(0x0000000000000005,UL) /* 256MB Page */ |
| 148 | #define _PAGE_SZ32MB_4V _AC(0x0000000000000004,UL) /* 32MB Page */ |
| 149 | #define _PAGE_SZ4MB_4V _AC(0x0000000000000003,UL) /* 4MB Page */ |
| 150 | #define _PAGE_SZ512K_4V _AC(0x0000000000000002,UL) /* 512K Page */ |
| 151 | #define _PAGE_SZ64K_4V _AC(0x0000000000000001,UL) /* 64K Page */ |
| 152 | #define _PAGE_SZ8K_4V _AC(0x0000000000000000,UL) /* 8K Page */ |
| 153 | |
| 154 | #if PAGE_SHIFT == 13 |
| 155 | #define _PAGE_SZBITS_4U _PAGE_SZ8K_4U |
| 156 | #define _PAGE_SZBITS_4V _PAGE_SZ8K_4V |
| 157 | #elif PAGE_SHIFT == 16 |
| 158 | #define _PAGE_SZBITS_4U _PAGE_SZ64K_4U |
| 159 | #define _PAGE_SZBITS_4V _PAGE_SZ64K_4V |
| 160 | #elif PAGE_SHIFT == 19 |
| 161 | #define _PAGE_SZBITS_4U _PAGE_SZ512K_4U |
| 162 | #define _PAGE_SZBITS_4V _PAGE_SZ512K_4V |
| 163 | #elif PAGE_SHIFT == 22 |
| 164 | #define _PAGE_SZBITS_4U _PAGE_SZ4MB_4U |
| 165 | #define _PAGE_SZBITS_4V _PAGE_SZ4MB_4V |
| 166 | #else |
| 167 | #error Wrong PAGE_SHIFT specified |
| 168 | #endif |
| 169 | |
| 170 | #if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB) |
| 171 | #define _PAGE_SZHUGE_4U _PAGE_SZ4MB_4U |
| 172 | #define _PAGE_SZHUGE_4V _PAGE_SZ4MB_4V |
| 173 | #elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K) |
| 174 | #define _PAGE_SZHUGE_4U _PAGE_SZ512K_4U |
| 175 | #define _PAGE_SZHUGE_4V _PAGE_SZ512K_4V |
| 176 | #elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K) |
| 177 | #define _PAGE_SZHUGE_4U _PAGE_SZ64K_4U |
| 178 | #define _PAGE_SZHUGE_4V _PAGE_SZ64K_4V |
| 179 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 181 | /* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */ |
| 182 | #define __P000 __pgprot(0) |
| 183 | #define __P001 __pgprot(0) |
| 184 | #define __P010 __pgprot(0) |
| 185 | #define __P011 __pgprot(0) |
| 186 | #define __P100 __pgprot(0) |
| 187 | #define __P101 __pgprot(0) |
| 188 | #define __P110 __pgprot(0) |
| 189 | #define __P111 __pgprot(0) |
David S. Miller | 09f9428 | 2006-01-31 18:31:06 -0800 | [diff] [blame] | 190 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 191 | #define __S000 __pgprot(0) |
| 192 | #define __S001 __pgprot(0) |
| 193 | #define __S010 __pgprot(0) |
| 194 | #define __S011 __pgprot(0) |
| 195 | #define __S100 __pgprot(0) |
| 196 | #define __S101 __pgprot(0) |
| 197 | #define __S110 __pgprot(0) |
| 198 | #define __S111 __pgprot(0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | #ifndef __ASSEMBLY__ |
| 201 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 202 | extern pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long); |
| 203 | |
| 204 | extern unsigned long pte_sz_bits(unsigned long size); |
| 205 | |
| 206 | extern pgprot_t PAGE_KERNEL; |
| 207 | extern pgprot_t PAGE_KERNEL_LOCKED; |
| 208 | extern pgprot_t PAGE_COPY; |
David S. Miller | 0f15952 | 2006-02-18 12:43:16 -0800 | [diff] [blame] | 209 | extern pgprot_t PAGE_SHARED; |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 210 | |
| 211 | /* XXX This uglyness is for the atyfb driver's sparc mmap() support. XXX */ |
| 212 | extern unsigned long _PAGE_IE; |
| 213 | extern unsigned long _PAGE_E; |
| 214 | extern unsigned long _PAGE_CACHE; |
| 215 | |
| 216 | extern unsigned long pg_iobits; |
| 217 | extern unsigned long _PAGE_ALL_SZ_BITS; |
| 218 | extern unsigned long _PAGE_SZBITS; |
| 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | extern struct page *mem_map_zero; |
| 221 | #define ZERO_PAGE(vaddr) (mem_map_zero) |
| 222 | |
| 223 | /* PFNs are real physical page numbers. However, mem_map only begins to record |
| 224 | * per-page information starting at pfn_base. This is to handle systems where |
| 225 | * the first physical page in the machine is at some huge physical address, |
| 226 | * such as 4GB. This is common on a partitioned E10000, for example. |
| 227 | */ |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 228 | static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot) |
| 229 | { |
| 230 | unsigned long paddr = pfn << PAGE_SHIFT; |
| 231 | unsigned long sz_bits; |
| 232 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 233 | sz_bits = 0UL; |
| 234 | if (_PAGE_SZBITS_4U != 0UL || _PAGE_SZBITS_4V != 0UL) { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 235 | __asm__ __volatile__( |
| 236 | "\n661: sethi %uhi(%1), %0\n" |
| 237 | " sllx %0, 32, %0\n" |
| 238 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 239 | " .word 661b\n" |
| 240 | " mov %2, %0\n" |
| 241 | " nop\n" |
| 242 | " .previous\n" |
| 243 | : "=r" (sz_bits) |
| 244 | : "i" (_PAGE_SZBITS_4U), "i" (_PAGE_SZBITS_4V)); |
| 245 | } |
| 246 | return __pte(paddr | sz_bits | pgprot_val(prot)); |
| 247 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 249 | |
| 250 | /* This one can be done with two shifts. */ |
| 251 | static inline unsigned long pte_pfn(pte_t pte) |
| 252 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 253 | unsigned long ret; |
| 254 | |
| 255 | __asm__ __volatile__( |
| 256 | "\n661: sllx %1, %2, %0\n" |
| 257 | " srlx %0, %3, %0\n" |
| 258 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 259 | " .word 661b\n" |
| 260 | " sllx %1, %4, %0\n" |
| 261 | " srlx %0, %5, %0\n" |
| 262 | " .previous\n" |
| 263 | : "=r" (ret) |
| 264 | : "r" (pte_val(pte)), |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 265 | "i" (21), "i" (21 + PAGE_SHIFT), |
| 266 | "i" (8), "i" (8 + PAGE_SHIFT)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 267 | |
| 268 | return ret; |
| 269 | } |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 270 | #define pte_page(x) pfn_to_page(pte_pfn(x)) |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 271 | |
| 272 | static inline pte_t pte_modify(pte_t pte, pgprot_t prot) |
| 273 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 274 | unsigned long mask, tmp; |
| 275 | |
| 276 | /* SUN4U: 0x600307ffffffecb8 (negated == 0x9ffcf80000001347) |
| 277 | * SUN4V: 0x30ffffffffffee17 (negated == 0xcf000000000011e8) |
| 278 | * |
| 279 | * Even if we use negation tricks the result is still a 6 |
| 280 | * instruction sequence, so don't try to play fancy and just |
| 281 | * do the most straightforward implementation. |
| 282 | * |
| 283 | * Note: We encode this into 3 sun4v 2-insn patch sequences. |
| 284 | */ |
| 285 | |
| 286 | __asm__ __volatile__( |
| 287 | "\n661: sethi %%uhi(%2), %1\n" |
| 288 | " sethi %%hi(%2), %0\n" |
| 289 | "\n662: or %1, %%ulo(%2), %1\n" |
| 290 | " or %0, %%lo(%2), %0\n" |
| 291 | "\n663: sllx %1, 32, %1\n" |
| 292 | " or %0, %1, %0\n" |
| 293 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 294 | " .word 661b\n" |
| 295 | " sethi %%uhi(%3), %1\n" |
| 296 | " sethi %%hi(%3), %0\n" |
| 297 | " .word 662b\n" |
| 298 | " or %1, %%ulo(%3), %1\n" |
| 299 | " or %0, %%lo(%3), %0\n" |
| 300 | " .word 663b\n" |
| 301 | " sllx %1, 32, %1\n" |
| 302 | " or %0, %1, %0\n" |
| 303 | " .previous\n" |
| 304 | : "=r" (mask), "=r" (tmp) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 305 | : "i" (_PAGE_PADDR_4U | _PAGE_MODIFIED_4U | _PAGE_ACCESSED_4U | |
| 306 | _PAGE_CP_4U | _PAGE_CV_4U | _PAGE_E_4U | _PAGE_PRESENT_4U | |
| 307 | _PAGE_SZBITS_4U), |
| 308 | "i" (_PAGE_PADDR_4V | _PAGE_MODIFIED_4V | _PAGE_ACCESSED_4V | |
| 309 | _PAGE_CP_4V | _PAGE_CV_4V | _PAGE_E_4V | _PAGE_PRESENT_4V | |
| 310 | _PAGE_SZBITS_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 311 | |
| 312 | return __pte((pte_val(pte) & mask) | (pgprot_val(prot) & ~mask)); |
| 313 | } |
| 314 | |
| 315 | static inline pte_t pgoff_to_pte(unsigned long off) |
| 316 | { |
| 317 | off <<= PAGE_SHIFT; |
| 318 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 319 | __asm__ __volatile__( |
| 320 | "\n661: or %0, %2, %0\n" |
| 321 | " .section .sun4v_1insn_patch, \"ax\"\n" |
| 322 | " .word 661b\n" |
| 323 | " or %0, %3, %0\n" |
| 324 | " .previous\n" |
| 325 | : "=r" (off) |
| 326 | : "0" (off), "i" (_PAGE_FILE_4U), "i" (_PAGE_FILE_4V)); |
| 327 | |
| 328 | return __pte(off); |
| 329 | } |
| 330 | |
| 331 | static inline pgprot_t pgprot_noncached(pgprot_t prot) |
| 332 | { |
| 333 | unsigned long val = pgprot_val(prot); |
| 334 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 335 | __asm__ __volatile__( |
| 336 | "\n661: andn %0, %2, %0\n" |
| 337 | " or %0, %3, %0\n" |
| 338 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 339 | " .word 661b\n" |
| 340 | " andn %0, %4, %0\n" |
| 341 | " or %0, %3, %0\n" |
| 342 | " .previous\n" |
| 343 | : "=r" (val) |
| 344 | : "0" (val), "i" (_PAGE_CP_4U | _PAGE_CV_4U), "i" (_PAGE_E_4U), |
| 345 | "i" (_PAGE_CP_4V | _PAGE_CV_4V), "i" (_PAGE_E_4V)); |
| 346 | |
| 347 | return __pgprot(val); |
| 348 | } |
| 349 | /* Various pieces of code check for platform support by ifdef testing |
| 350 | * on "pgprot_noncached". That's broken and should be fixed, but for |
| 351 | * now... |
| 352 | */ |
| 353 | #define pgprot_noncached pgprot_noncached |
| 354 | |
Fabio M. Di Nitto | f6c1fe5 | 2006-02-18 00:32:31 -0800 | [diff] [blame] | 355 | #ifdef CONFIG_HUGETLB_PAGE |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 356 | static inline pte_t pte_mkhuge(pte_t pte) |
| 357 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 358 | unsigned long mask; |
| 359 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 360 | __asm__ __volatile__( |
| 361 | "\n661: sethi %%uhi(%1), %0\n" |
| 362 | " sllx %0, 32, %0\n" |
| 363 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 364 | " .word 661b\n" |
| 365 | " mov %2, %0\n" |
| 366 | " nop\n" |
| 367 | " .previous\n" |
| 368 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 369 | : "i" (_PAGE_SZHUGE_4U), "i" (_PAGE_SZHUGE_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 370 | |
| 371 | return __pte(pte_val(pte) | mask); |
| 372 | } |
Fabio M. Di Nitto | f6c1fe5 | 2006-02-18 00:32:31 -0800 | [diff] [blame] | 373 | #endif |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 374 | |
| 375 | static inline pte_t pte_mkdirty(pte_t pte) |
| 376 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 377 | unsigned long val = pte_val(pte), tmp; |
| 378 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 379 | __asm__ __volatile__( |
| 380 | "\n661: or %0, %3, %0\n" |
| 381 | " nop\n" |
| 382 | "\n662: nop\n" |
| 383 | " nop\n" |
| 384 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 385 | " .word 661b\n" |
| 386 | " sethi %%uhi(%4), %1\n" |
| 387 | " sllx %1, 32, %1\n" |
| 388 | " .word 662b\n" |
| 389 | " or %1, %%lo(%4), %1\n" |
| 390 | " or %0, %1, %0\n" |
| 391 | " .previous\n" |
| 392 | : "=r" (val), "=r" (tmp) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 393 | : "0" (val), "i" (_PAGE_MODIFIED_4U | _PAGE_W_4U), |
| 394 | "i" (_PAGE_MODIFIED_4V | _PAGE_W_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 395 | |
| 396 | return __pte(val); |
| 397 | } |
| 398 | |
| 399 | static inline pte_t pte_mkclean(pte_t pte) |
| 400 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 401 | unsigned long val = pte_val(pte), tmp; |
| 402 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 403 | __asm__ __volatile__( |
| 404 | "\n661: andn %0, %3, %0\n" |
| 405 | " nop\n" |
| 406 | "\n662: nop\n" |
| 407 | " nop\n" |
| 408 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 409 | " .word 661b\n" |
| 410 | " sethi %%uhi(%4), %1\n" |
| 411 | " sllx %1, 32, %1\n" |
| 412 | " .word 662b\n" |
| 413 | " or %1, %%lo(%4), %1\n" |
| 414 | " andn %0, %1, %0\n" |
| 415 | " .previous\n" |
| 416 | : "=r" (val), "=r" (tmp) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 417 | : "0" (val), "i" (_PAGE_MODIFIED_4U | _PAGE_W_4U), |
| 418 | "i" (_PAGE_MODIFIED_4V | _PAGE_W_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 419 | |
| 420 | return __pte(val); |
| 421 | } |
| 422 | |
| 423 | static inline pte_t pte_mkwrite(pte_t pte) |
| 424 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 425 | unsigned long val = pte_val(pte), mask; |
| 426 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 427 | __asm__ __volatile__( |
| 428 | "\n661: mov %1, %0\n" |
| 429 | " nop\n" |
| 430 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 431 | " .word 661b\n" |
| 432 | " sethi %%uhi(%2), %0\n" |
| 433 | " sllx %0, 32, %0\n" |
| 434 | " .previous\n" |
| 435 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 436 | : "i" (_PAGE_WRITE_4U), "i" (_PAGE_WRITE_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 437 | |
| 438 | return __pte(val | mask); |
| 439 | } |
| 440 | |
| 441 | static inline pte_t pte_wrprotect(pte_t pte) |
| 442 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 443 | unsigned long val = pte_val(pte), tmp; |
| 444 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 445 | __asm__ __volatile__( |
| 446 | "\n661: andn %0, %3, %0\n" |
| 447 | " nop\n" |
| 448 | "\n662: nop\n" |
| 449 | " nop\n" |
| 450 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 451 | " .word 661b\n" |
| 452 | " sethi %%uhi(%4), %1\n" |
| 453 | " sllx %1, 32, %1\n" |
| 454 | " .word 662b\n" |
| 455 | " or %1, %%lo(%4), %1\n" |
| 456 | " andn %0, %1, %0\n" |
| 457 | " .previous\n" |
| 458 | : "=r" (val), "=r" (tmp) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 459 | : "0" (val), "i" (_PAGE_WRITE_4U | _PAGE_W_4U), |
| 460 | "i" (_PAGE_WRITE_4V | _PAGE_W_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 461 | |
| 462 | return __pte(val); |
| 463 | } |
| 464 | |
| 465 | static inline pte_t pte_mkold(pte_t pte) |
| 466 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 467 | unsigned long mask; |
| 468 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 469 | __asm__ __volatile__( |
| 470 | "\n661: mov %1, %0\n" |
| 471 | " nop\n" |
| 472 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 473 | " .word 661b\n" |
| 474 | " sethi %%uhi(%2), %0\n" |
| 475 | " sllx %0, 32, %0\n" |
| 476 | " .previous\n" |
| 477 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 478 | : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 479 | |
| 480 | mask |= _PAGE_R; |
| 481 | |
| 482 | return __pte(pte_val(pte) & ~mask); |
| 483 | } |
| 484 | |
| 485 | static inline pte_t pte_mkyoung(pte_t pte) |
| 486 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 487 | unsigned long mask; |
| 488 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 489 | __asm__ __volatile__( |
| 490 | "\n661: mov %1, %0\n" |
| 491 | " nop\n" |
| 492 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 493 | " .word 661b\n" |
| 494 | " sethi %%uhi(%2), %0\n" |
| 495 | " sllx %0, 32, %0\n" |
| 496 | " .previous\n" |
| 497 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 498 | : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 499 | |
| 500 | mask |= _PAGE_R; |
| 501 | |
| 502 | return __pte(pte_val(pte) | mask); |
| 503 | } |
| 504 | |
| 505 | static inline unsigned long pte_young(pte_t pte) |
| 506 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 507 | unsigned long mask; |
| 508 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 509 | __asm__ __volatile__( |
| 510 | "\n661: mov %1, %0\n" |
| 511 | " nop\n" |
| 512 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 513 | " .word 661b\n" |
| 514 | " sethi %%uhi(%2), %0\n" |
| 515 | " sllx %0, 32, %0\n" |
| 516 | " .previous\n" |
| 517 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 518 | : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 519 | |
| 520 | return (pte_val(pte) & mask); |
| 521 | } |
| 522 | |
| 523 | static inline unsigned long pte_dirty(pte_t pte) |
| 524 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 525 | unsigned long mask; |
| 526 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 527 | __asm__ __volatile__( |
| 528 | "\n661: mov %1, %0\n" |
| 529 | " nop\n" |
| 530 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 531 | " .word 661b\n" |
| 532 | " sethi %%uhi(%2), %0\n" |
| 533 | " sllx %0, 32, %0\n" |
| 534 | " .previous\n" |
| 535 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 536 | : "i" (_PAGE_MODIFIED_4U), "i" (_PAGE_MODIFIED_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 537 | |
| 538 | return (pte_val(pte) & mask); |
| 539 | } |
| 540 | |
| 541 | static inline unsigned long pte_write(pte_t pte) |
| 542 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 543 | unsigned long mask; |
| 544 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 545 | __asm__ __volatile__( |
| 546 | "\n661: mov %1, %0\n" |
| 547 | " nop\n" |
| 548 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 549 | " .word 661b\n" |
| 550 | " sethi %%uhi(%2), %0\n" |
| 551 | " sllx %0, 32, %0\n" |
| 552 | " .previous\n" |
| 553 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 554 | : "i" (_PAGE_WRITE_4U), "i" (_PAGE_WRITE_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 555 | |
| 556 | return (pte_val(pte) & mask); |
| 557 | } |
| 558 | |
| 559 | static inline unsigned long pte_exec(pte_t pte) |
| 560 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 561 | unsigned long mask; |
| 562 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 563 | __asm__ __volatile__( |
| 564 | "\n661: sethi %%hi(%1), %0\n" |
| 565 | " .section .sun4v_1insn_patch, \"ax\"\n" |
| 566 | " .word 661b\n" |
| 567 | " mov %2, %0\n" |
| 568 | " .previous\n" |
| 569 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 570 | : "i" (_PAGE_EXEC_4U), "i" (_PAGE_EXEC_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 571 | |
| 572 | return (pte_val(pte) & mask); |
| 573 | } |
| 574 | |
| 575 | static inline unsigned long pte_read(pte_t pte) |
| 576 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 577 | unsigned long mask; |
| 578 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 579 | __asm__ __volatile__( |
| 580 | "\n661: mov %1, %0\n" |
| 581 | " nop\n" |
| 582 | " .section .sun4v_2insn_patch, \"ax\"\n" |
| 583 | " .word 661b\n" |
| 584 | " sethi %%uhi(%2), %0\n" |
| 585 | " sllx %0, 32, %0\n" |
| 586 | " .previous\n" |
| 587 | : "=r" (mask) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 588 | : "i" (_PAGE_READ_4U), "i" (_PAGE_READ_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 589 | |
| 590 | return (pte_val(pte) & mask); |
| 591 | } |
| 592 | |
| 593 | static inline unsigned long pte_file(pte_t pte) |
| 594 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 595 | unsigned long val = pte_val(pte); |
| 596 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 597 | __asm__ __volatile__( |
| 598 | "\n661: and %0, %2, %0\n" |
| 599 | " .section .sun4v_1insn_patch, \"ax\"\n" |
| 600 | " .word 661b\n" |
| 601 | " and %0, %3, %0\n" |
| 602 | " .previous\n" |
| 603 | : "=r" (val) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 604 | : "0" (val), "i" (_PAGE_FILE_4U), "i" (_PAGE_FILE_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 605 | |
| 606 | return val; |
| 607 | } |
| 608 | |
| 609 | static inline unsigned long pte_present(pte_t pte) |
| 610 | { |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 611 | unsigned long val = pte_val(pte); |
| 612 | |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 613 | __asm__ __volatile__( |
| 614 | "\n661: and %0, %2, %0\n" |
| 615 | " .section .sun4v_1insn_patch, \"ax\"\n" |
| 616 | " .word 661b\n" |
| 617 | " and %0, %3, %0\n" |
| 618 | " .previous\n" |
| 619 | : "=r" (val) |
David S. Miller | 50f4f23 | 2006-02-14 01:32:29 -0800 | [diff] [blame] | 620 | : "0" (val), "i" (_PAGE_PRESENT_4U), "i" (_PAGE_PRESENT_4V)); |
David S. Miller | cf62715 | 2006-02-12 21:10:07 -0800 | [diff] [blame] | 621 | |
| 622 | return val; |
| 623 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | #define pmd_set(pmdp, ptep) \ |
| 626 | (pmd_val(*(pmdp)) = (__pa((unsigned long) (ptep)) >> 11UL)) |
| 627 | #define pud_set(pudp, pmdp) \ |
| 628 | (pud_val(*(pudp)) = (__pa((unsigned long) (pmdp)) >> 11UL)) |
| 629 | #define __pmd_page(pmd) \ |
| 630 | ((unsigned long) __va((((unsigned long)pmd_val(pmd))<<11UL))) |
| 631 | #define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd)) |
| 632 | #define pud_page(pud) \ |
| 633 | ((unsigned long) __va((((unsigned long)pud_val(pud))<<11UL))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | #define pmd_none(pmd) (!pmd_val(pmd)) |
| 635 | #define pmd_bad(pmd) (0) |
| 636 | #define pmd_present(pmd) (pmd_val(pmd) != 0U) |
| 637 | #define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0U) |
| 638 | #define pud_none(pud) (!pud_val(pud)) |
| 639 | #define pud_bad(pud) (0) |
| 640 | #define pud_present(pud) (pud_val(pud) != 0U) |
| 641 | #define pud_clear(pudp) (pud_val(*(pudp)) = 0U) |
| 642 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 643 | /* Same in both SUN4V and SUN4U. */ |
| 644 | #define pte_none(pte) (!pte_val(pte)) |
| 645 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | /* to find an entry in a page-table-directory. */ |
| 647 | #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)) |
| 648 | #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) |
| 649 | |
| 650 | /* to find an entry in a kernel page-table-directory */ |
| 651 | #define pgd_offset_k(address) pgd_offset(&init_mm, address) |
| 652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | /* Find an entry in the second-level page table.. */ |
| 654 | #define pmd_offset(pudp, address) \ |
| 655 | ((pmd_t *) pud_page(*(pudp)) + \ |
| 656 | (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))) |
| 657 | |
| 658 | /* Find an entry in the third-level page table.. */ |
| 659 | #define pte_index(dir, address) \ |
| 660 | ((pte_t *) __pmd_page(*(dir)) + \ |
| 661 | ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))) |
| 662 | #define pte_offset_kernel pte_index |
| 663 | #define pte_offset_map pte_index |
| 664 | #define pte_offset_map_nested pte_index |
| 665 | #define pte_unmap(pte) do { } while (0) |
| 666 | #define pte_unmap_nested(pte) do { } while (0) |
| 667 | |
| 668 | /* Actual page table PTE updates. */ |
| 669 | extern void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig); |
| 670 | |
| 671 | static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) |
| 672 | { |
| 673 | pte_t orig = *ptep; |
| 674 | |
| 675 | *ptep = pte; |
| 676 | |
| 677 | /* It is more efficient to let flush_tlb_kernel_range() |
| 678 | * handle init_mm tlb flushes. |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 679 | * |
| 680 | * SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U |
| 681 | * and SUN4V pte layout, so this inline test is fine. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | */ |
| 683 | if (likely(mm != &init_mm) && (pte_val(orig) & _PAGE_VALID)) |
| 684 | tlb_batch_add(mm, addr, ptep, orig); |
| 685 | } |
| 686 | |
| 687 | #define pte_clear(mm,addr,ptep) \ |
| 688 | set_pte_at((mm), (addr), (ptep), __pte(0UL)) |
| 689 | |
David S. Miller | 5642530 | 2005-09-25 16:46:57 -0700 | [diff] [blame] | 690 | extern pgd_t swapper_pg_dir[2048]; |
| 691 | extern pmd_t swapper_low_pmd_dir[2048]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
David S. Miller | 801ab3c | 2005-09-28 21:31:25 -0700 | [diff] [blame] | 693 | extern void paging_init(void); |
David S. Miller | 1014757 | 2005-09-28 21:46:43 -0700 | [diff] [blame] | 694 | extern unsigned long find_ecache_flush_span(unsigned long size); |
David S. Miller | 801ab3c | 2005-09-28 21:31:25 -0700 | [diff] [blame] | 695 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | /* These do nothing with the way I have things setup. */ |
| 697 | #define mmu_lockarea(vaddr, len) (vaddr) |
| 698 | #define mmu_unlockarea(vaddr, len) do { } while(0) |
| 699 | |
| 700 | struct vm_area_struct; |
| 701 | extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t); |
| 702 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | /* Encode and de-code a swap entry */ |
| 704 | #define __swp_type(entry) (((entry).val >> PAGE_SHIFT) & 0xffUL) |
| 705 | #define __swp_offset(entry) ((entry).val >> (PAGE_SHIFT + 8UL)) |
| 706 | #define __swp_entry(type, offset) \ |
| 707 | ( (swp_entry_t) \ |
| 708 | { \ |
| 709 | (((long)(type) << PAGE_SHIFT) | \ |
| 710 | ((long)(offset) << (PAGE_SHIFT + 8UL))) \ |
| 711 | } ) |
| 712 | #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) |
| 713 | #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) |
| 714 | |
| 715 | /* File offset in PTE support. */ |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 716 | extern unsigned long pte_file(pte_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | #define pte_to_pgoff(pte) (pte_val(pte) >> PAGE_SHIFT) |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 718 | extern pte_t pgoff_to_pte(unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | #define PTE_FILE_MAX_BITS (64UL - PAGE_SHIFT - 1UL) |
| 720 | |
| 721 | extern unsigned long prom_virt_to_phys(unsigned long, int *); |
| 722 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 723 | extern unsigned long sun4u_get_pte(unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 725 | static inline unsigned long __get_phys(unsigned long addr) |
| 726 | { |
| 727 | return sun4u_get_pte(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | } |
| 729 | |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 730 | static inline int __get_iospace(unsigned long addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | { |
David S. Miller | c4bce90 | 2006-02-11 21:57:54 -0800 | [diff] [blame] | 732 | return ((sun4u_get_pte(addr) & 0xf0000000) >> 28); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | extern unsigned long *sparc64_valid_addr_bitmap; |
| 736 | |
| 737 | /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */ |
| 738 | #define kern_addr_valid(addr) \ |
| 739 | (test_bit(__pa((unsigned long)(addr))>>22, sparc64_valid_addr_bitmap)) |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, |
| 742 | unsigned long pfn, |
| 743 | unsigned long size, pgprot_t prot); |
| 744 | |
| 745 | /* |
| 746 | * For sparc32&64, the pfn in io_remap_pfn_range() carries <iospace> in |
| 747 | * its high 4 bits. These macros/functions put it there or get it from there. |
| 748 | */ |
| 749 | #define MK_IOSPACE_PFN(space, pfn) (pfn | (space << (BITS_PER_LONG - 4))) |
| 750 | #define GET_IOSPACE(pfn) (pfn >> (BITS_PER_LONG - 4)) |
| 751 | #define GET_PFN(pfn) (pfn & 0x0fffffffffffffffUL) |
| 752 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | #include <asm-generic/pgtable.h> |
| 754 | |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 755 | /* We provide our own get_unmapped_area to cope with VA holes and |
| 756 | * SHM area cache aliasing for userland. |
| 757 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | #define HAVE_ARCH_UNMAPPED_AREA |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 759 | #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | |
| 761 | /* We provide a special get_unmapped_area for framebuffer mmaps to try and use |
| 762 | * the largest alignment possible such that larget PTEs can be used. |
| 763 | */ |
| 764 | extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long, |
| 765 | unsigned long, unsigned long, |
| 766 | unsigned long); |
| 767 | #define HAVE_ARCH_FB_UNMAPPED_AREA |
| 768 | |
David S. Miller | 3c93646 | 2006-01-31 18:30:27 -0800 | [diff] [blame] | 769 | extern void pgtable_cache_init(void); |
David S. Miller | 481295f | 2006-02-07 21:51:08 -0800 | [diff] [blame] | 770 | extern void sun4v_register_fault_status(void); |
David S. Miller | 490384e | 2006-02-11 14:41:18 -0800 | [diff] [blame] | 771 | extern void sun4v_ktsb_register(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
| 773 | #endif /* !(__ASSEMBLY__) */ |
| 774 | |
| 775 | #endif /* !(_SPARC64_PGTABLE_H) */ |