/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1994 - 2002 by Ralf Baechle * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. * Copyright (C) 2002 Maciej W. Rozycki */ #ifndef _ASM_PGTABLE_BITS_H #define _ASM_PGTABLE_BITS_H /* * Note that we shift the lower 32bits of each EntryLo[01] entry * 6 bits to the left. That way we can convert the PFN into the * physical address by a single 'and' operation and gain 6 additional * bits for storing information which isn't present in a normal * MIPS page table. * * Similar to the Alpha port, we need to keep track of the ref * and mod bits in software. We have a software "yeah you can read * from this page" bit, and a hardware one which actually lets the * process read from the page. On the same token we have a software * writable bit and the real hardware one which actually lets the * process write to the page, this keeps a mod bit via the hardware * dirty bit. * * Certain revisions of the R4000 and R5000 have a bug where if a * certain sequence occurs in the last 3 instructions of an executable * page, and the following page is not mapped, the cpu can do * unpredictable things. The code (when it is written) to deal with * this problem will be in the update_mmu_cache() code for the r4k. */ #if defined(CONFIG_XPA) /* * Page table bit offsets used for 64 bit physical addressing on * MIPS32r5 with XPA. */ enum pgtable_bits { /* Used by TLB hardware (placed in EntryLo*) */ _PAGE_NO_EXEC_SHIFT, _PAGE_NO_READ_SHIFT, _PAGE_GLOBAL_SHIFT, _PAGE_VALID_SHIFT, _PAGE_DIRTY_SHIFT, _CACHE_SHIFT, /* Used only by software (masked out before writing EntryLo*) */ _PAGE_PRESENT_SHIFT = 24, _PAGE_WRITE_SHIFT, _PAGE_ACCESSED_SHIFT, _PAGE_MODIFIED_SHIFT, }; /* * Bits for extended EntryLo0/EntryLo1 registers */ #define _PFNX_MASK 0xffffff #elif defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32) /* * Page table bit offsets used for 36 bit physical addressing on MIPS32, * for example with Alchemy or Netlogic XLP/XLR. */ enum pgtable_bits { /* Used by TLB hardware (placed in EntryLo*) */ _PAGE_GLOBAL_SHIFT, _PAGE_VALID_SHIFT, _PAGE_DIRTY_SHIFT, _CACHE_SHIFT, /* Used only by software (masked out before writing EntryLo*) */ _PAGE_PRESENT_SHIFT = _CACHE_SHIFT + 3, _PAGE_NO_READ_SHIFT, _PAGE_WRITE_SHIFT, _PAGE_ACCESSED_SHIFT, _PAGE_MODIFIED_SHIFT, }; #elif defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) /* Page table bits used for r3k systems */ enum pgtable_bits { /* Used only by software (writes to EntryLo ignored) */ _PAGE_PRESENT_SHIFT, _PAGE_NO_READ_SHIFT, _PAGE_WRITE_SHIFT, _PAGE_ACCESSED_SHIFT, _PAGE_MODIFIED_SHIFT, /* Used by TLB hardware (placed in EntryLo) */ _PAGE_GLOBAL_SHIFT = 8, _PAGE_VALID_SHIFT, _PAGE_DIRTY_SHIFT, _CACHE_UNCACHED_SHIFT, }; #else /* Page table bits used for r4k systems */ enum pgtable_bits { /* Used only by software (masked out before writing EntryLo*) */ _PAGE_PRESENT_SHIFT, #if !defined(CONFIG_CPU_HAS_RIXI) _PAGE_NO_READ_SHIFT, #endif _PAGE_WRITE_SHIFT, _PAGE_ACCESSED_SHIFT, _PAGE_MODIFIED_SHIFT, #if defined(CONFIG_64BIT) && defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) _PAGE_HUGE_SHIFT, #endif /* Used by TLB hardware (placed in EntryLo*) */ #if defined(CONFIG_CPU_HAS_RIXI) _PAGE_NO_EXEC_SHIFT, _PAGE_NO_READ_SHIFT, #endif _PAGE_GLOBAL_SHIFT, _PAGE_VALID_SHIFT, _PAGE_DIRTY_SHIFT, _CACHE_SHIFT, }; #endif /* defined(CONFIG_PHYS_ADDR_T_64BIT && defined(CONFIG_CPU_MIPS32) */ /* Used only by software */ #define _PAGE_PRESENT (1 << _PAGE_PRESENT_SHIFT) #define _PAGE_WRITE (1 << _PAGE_WRITE_SHIFT) #define _PAGE_ACCESSED (1 << _PAGE_ACCESSED_SHIFT) #define _PAGE_MODIFIED (1 << _PAGE_MODIFIED_SHIFT) #if defined(CONFIG_64BIT) && defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) # define _PAGE_HUGE (1 << _PAGE_HUGE_SHIFT) #endif /* Used by TLB hardware (placed in EntryLo*) */ #if defined(CONFIG_XPA) # define _PAGE_NO_EXEC (1 << _PAGE_NO_EXEC_SHIFT) #elif defined(CONFIG_CPU_HAS_RIXI) # define _PAGE_NO_EXEC (cpu_has_rixi ? (1 << _PAGE_NO_EXEC_SHIFT) : 0) #endif #define _PAGE_NO_READ (1 << _PAGE_NO_READ_SHIFT) #define _PAGE_GLOBAL (1 << _PAGE_GLOBAL_SHIFT) #define _PAGE_VALID (1 << _PAGE_VALID_SHIFT) #define _PAGE_DIRTY (1 << _PAGE_DIRTY_SHIFT) #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) # define _CACHE_UNCACHED (1 << _CACHE_UNCACHED_SHIFT) # define _CACHE_MASK _CACHE_UNCACHED # define _PFN_SHIFT PAGE_SHIFT #else # define _CACHE_MASK (7 << _CACHE_SHIFT) # define _PFN_SHIFT (PAGE_SHIFT - 12 + _CACHE_SHIFT + 3) #endif #ifndef _PAGE_NO_EXEC #define _PAGE_NO_EXEC 0 #endif #define _PAGE_SILENT_READ _PAGE_VALID #define _PAGE_SILENT_WRITE _PAGE_DIRTY #define _PFN_MASK (~((1 << (_PFN_SHIFT)) - 1)) /* * The final layouts of the PTE bits are: * * 64-bit, R1 or earlier: CCC D V G [S H] M A W R P * 32-bit, R1 or earler: CCC D V G M A W R P * 64-bit, R2 or later: CCC D V G RI/R XI [S H] M A W P * 32-bit, R2 or later: CCC D V G RI/R XI M A W P */ /* * pte_to_entrylo converts a page table entry (PTE) into a Mips * entrylo0/1 value. */ static inline uint64_t pte_to_entrylo(unsigned long pte_val) { #ifdef CONFIG_CPU_HAS_RIXI if (cpu_has_rixi) { int sa; #ifdef CONFIG_32BIT sa = 31 - _PAGE_NO_READ_SHIFT; #else sa = 63 - _PAGE_NO_READ_SHIFT; #endif /* * C has no way to express that this is a DSRL * _PAGE_NO_EXEC_SHIFT followed by a ROTR 2. Luckily * in the fast path this is done in assembly */ return (pte_val >> _PAGE_GLOBAL_SHIFT) | ((pte_val & (_PAGE_NO_EXEC | _PAGE_NO_READ)) << sa); } #endif return pte_val >> _PAGE_GLOBAL_SHIFT; } /* * Cache attributes */ #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) #define _CACHE_CACHABLE_NONCOHERENT 0 #define _CACHE_UNCACHED_ACCELERATED _CACHE_UNCACHED #elif defined(CONFIG_CPU_SB1) /* No penalty for being coherent on the SB1, so just use it for "noncoherent" spaces, too. Shouldn't hurt. */ #define _CACHE_CACHABLE_NONCOHERENT (5<<_CACHE_SHIFT) #elif defined(CONFIG_CPU_LOONGSON3) /* Using COHERENT flag for NONCOHERENT doesn't hurt. */ #define _CACHE_CACHABLE_NONCOHERENT (3<<_CACHE_SHIFT) /* LOONGSON */ #define _CACHE_CACHABLE_COHERENT (3<<_CACHE_SHIFT) /* LOONGSON-3 */ #elif defined(CONFIG_MACH_INGENIC) /* Ingenic uses the WA bit to achieve write-combine memory writes */ #define _CACHE_UNCACHED_ACCELERATED (1<<_CACHE_SHIFT) #endif #ifndef _CACHE_CACHABLE_NO_WA #define _CACHE_CACHABLE_NO_WA (0<<_CACHE_SHIFT) #endif #ifndef _CACHE_CACHABLE_WA #define _CACHE_CACHABLE_WA (1<<_CACHE_SHIFT) #endif #ifndef _CACHE_UNCACHED #define _CACHE_UNCACHED (2<<_CACHE_SHIFT) #endif #ifndef _CACHE_CACHABLE_NONCOHERENT #define _CACHE_CACHABLE_NONCOHERENT (3<<_CACHE_SHIFT) #endif #ifndef _CACHE_CACHABLE_CE #define _CACHE_CACHABLE_CE (4<<_CACHE_SHIFT) #endif #ifndef _CACHE_CACHABLE_COW #define _CACHE_CACHABLE_COW (5<<_CACHE_SHIFT) #endif #ifndef _CACHE_CACHABLE_CUW #define _CACHE_CACHABLE_CUW (6<<_CACHE_SHIFT) #endif #ifndef _CACHE_UNCACHED_ACCELERATED #define _CACHE_UNCACHED_ACCELERATED (7<<_CACHE_SHIFT) #endif #define __READABLE (_PAGE_SILENT_READ | _PAGE_ACCESSED) #define __WRITEABLE (_PAGE_SILENT_WRITE | _PAGE_WRITE | _PAGE_MODIFIED) #define _PAGE_CHG_MASK (_PAGE_ACCESSED | _PAGE_MODIFIED | \ _PFN_MASK | _CACHE_MASK) #endif /* _ASM_PGTABLE_BITS_H */
Name | Type | Size | Permission | Actions |
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dec | Folder | 0755 |
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emma | Folder | 0755 |
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fw | Folder | 0755 |
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ip32 | Folder | 0755 |
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lasat | Folder | 0755 |
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mach-ar7 | Folder | 0755 |
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mach-ath25 | Folder | 0755 |
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mach-ath79 | Folder | 0755 |
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mach-au1x00 | Folder | 0755 |
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mach-bcm47xx | Folder | 0755 |
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mach-bcm63xx | Folder | 0755 |
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mach-bmips | Folder | 0755 |
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mach-cavium-octeon | Folder | 0755 |
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mach-cobalt | Folder | 0755 |
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mach-db1x00 | Folder | 0755 |
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mach-dec | Folder | 0755 |
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mach-emma2rh | Folder | 0755 |
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mach-generic | Folder | 0755 |
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mach-ip22 | Folder | 0755 |
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mach-ip27 | Folder | 0755 |
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mach-ip28 | Folder | 0755 |
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mach-ip32 | Folder | 0755 |
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mach-jazz | Folder | 0755 |
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mach-jz4740 | Folder | 0755 |
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mach-lantiq | Folder | 0755 |
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mach-lasat | Folder | 0755 |
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mach-loongson32 | Folder | 0755 |
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mach-loongson64 | Folder | 0755 |
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mach-malta | Folder | 0755 |
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mach-netlogic | Folder | 0755 |
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mach-paravirt | Folder | 0755 |
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mach-pic32 | Folder | 0755 |
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mach-pistachio | Folder | 0755 |
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mach-pmcs-msp71xx | Folder | 0755 |
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mach-pnx833x | Folder | 0755 |
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mach-ralink | Folder | 0755 |
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mach-rc32434 | Folder | 0755 |
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mach-rm | Folder | 0755 |
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mach-sibyte | Folder | 0755 |
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mach-tx39xx | Folder | 0755 |
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mach-tx49xx | Folder | 0755 |
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mach-vr41xx | Folder | 0755 |
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mach-xilfpga | Folder | 0755 |
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mips-boards | Folder | 0755 |
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netlogic | Folder | 0755 |
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octeon | Folder | 0755 |
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pci | Folder | 0755 |
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sgi | Folder | 0755 |
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sibyte | Folder | 0755 |
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sn | Folder | 0755 |
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txx9 | Folder | 0755 |
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vr41xx | Folder | 0755 |
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xtalk | Folder | 0755 |
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Kbuild | File | 577 B | 0644 |
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abi.h | File | 853 B | 0644 |
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addrspace.h | File | 4.1 KB | 0644 |
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amon.h | File | 409 B | 0644 |
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arch_hweight.h | File | 792 B | 0644 |
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asm-eva.h | File | 6.82 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-prototypes.h | File | 197 B | 0644 |
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asm.h | File | 8.47 KB | 0644 |
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asmmacro-32.h | File | 2.47 KB | 0644 |
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asmmacro-64.h | File | 1.22 KB | 0644 |
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asmmacro.h | File | 14.07 KB | 0644 |
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atomic.h | File | 19.73 KB | 0644 |
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barrier.h | File | 8.03 KB | 0644 |
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bcache.h | File | 2.04 KB | 0644 |
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bitops.h | File | 15.46 KB | 0644 |
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bitrev.h | File | 608 B | 0644 |
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bmips-spaces.h | File | 268 B | 0644 |
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bmips.h | File | 3.45 KB | 0644 |
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bootinfo.h | File | 5.08 KB | 0644 |
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branch.h | File | 2.35 KB | 0644 |
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break.h | File | 787 B | 0644 |
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bug.h | File | 759 B | 0644 |
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bugs.h | File | 944 B | 0644 |
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cache.h | File | 546 B | 0644 |
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cacheflush.h | File | 4.99 KB | 0644 |
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cacheops.h | File | 3.71 KB | 0644 |
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cdmm.h | File | 3.67 KB | 0644 |
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cevt-r4k.h | File | 823 B | 0644 |
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checksum.h | File | 6.43 KB | 0644 |
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clock.h | File | 997 B | 0644 |
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clocksource.h | File | 884 B | 0644 |
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cmp.h | File | 492 B | 0644 |
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cmpxchg.h | File | 5.28 KB | 0644 |
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compat-signal.h | File | 640 B | 0644 |
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compat.h | File | 6.66 KB | 0644 |
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compiler.h | File | 2.96 KB | 0644 |
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cop2.h | File | 1.77 KB | 0644 |
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cpu-features.h | File | 19.46 KB | 0644 |
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cpu-info.h | File | 5.84 KB | 0644 |
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cpu-type.h | File | 4.13 KB | 0644 |
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cpu.h | File | 15.54 KB | 0644 |
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cpufeature.h | File | 717 B | 0644 |
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debug.h | File | 654 B | 0644 |
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delay.h | File | 841 B | 0644 |
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device.h | File | 347 B | 0644 |
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div64.h | File | 2.17 KB | 0644 |
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dma-coherence.h | File | 813 B | 0644 |
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dma-mapping.h | File | 981 B | 0644 |
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dma.h | File | 9.92 KB | 0644 |
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ds1287.h | File | 1019 B | 0644 |
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dsemul.h | File | 3.24 KB | 0644 |
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dsp.h | File | 1.91 KB | 0644 |
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edac.h | File | 819 B | 0644 |
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elf.h | File | 15.04 KB | 0644 |
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errno.h | File | 429 B | 0644 |
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eva.h | File | 796 B | 0644 |
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exec.h | File | 579 B | 0644 |
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extable.h | File | 241 B | 0644 |
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fb.h | File | 372 B | 0644 |
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fixmap.h | File | 2.29 KB | 0644 |
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floppy.h | File | 1.57 KB | 0644 |
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fpregdef.h | File | 2.66 KB | 0644 |
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fpu.h | File | 5.21 KB | 0644 |
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fpu_emulator.h | File | 5.74 KB | 0644 |
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ftrace.h | File | 2.11 KB | 0644 |
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futex.h | File | 4.87 KB | 0644 |
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gio_device.h | File | 1.5 KB | 0644 |
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gt64120.h | File | 19.37 KB | 0644 |
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hardirq.h | File | 544 B | 0644 |
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hazards.h | File | 8.36 KB | 0644 |
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highmem.h | File | 1.72 KB | 0644 |
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hpet.h | File | 1.93 KB | 0644 |
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hugetlb.h | File | 2.76 KB | 0644 |
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hw_irq.h | File | 475 B | 0644 |
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i8259.h | File | 2.52 KB | 0644 |
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ide.h | File | 330 B | 0644 |
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idle.h | File | 689 B | 0644 |
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inst.h | File | 2.34 KB | 0644 |
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io.h | File | 18.44 KB | 0644 |
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irq.h | File | 2.26 KB | 0644 |
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irq_cpu.h | File | 708 B | 0644 |
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irq_gt641xx.h | File | 2.69 KB | 0644 |
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irq_regs.h | File | 744 B | 0644 |
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irqflags.h | File | 4.04 KB | 0644 |
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isa-rev.h | File | 556 B | 0644 |
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isadep.h | File | 603 B | 0644 |
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jazz.h | File | 8 KB | 0644 |
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jazzdma.h | File | 2.97 KB | 0644 |
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jump_label.h | File | 1.4 KB | 0644 |
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kdebug.h | File | 303 B | 0644 |
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kexec.h | File | 1.53 KB | 0644 |
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kgdb.h | File | 1.19 KB | 0644 |
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kmap_types.h | File | 221 B | 0644 |
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kprobes.h | File | 2.68 KB | 0644 |
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kvm_host.h | File | 37.88 KB | 0644 |
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kvm_para.h | File | 2.09 KB | 0644 |
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linkage.h | File | 306 B | 0644 |
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llsc.h | File | 623 B | 0644 |
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local.h | File | 4.99 KB | 0644 |
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m48t37.h | File | 732 B | 0644 |
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maar.h | File | 4.04 KB | 0644 |
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machine.h | File | 2.93 KB | 0644 |
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mc146818-time.h | File | 3.69 KB | 0644 |
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mc146818rtc.h | File | 450 B | 0644 |
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mips-cm.h | File | 15.86 KB | 0644 |
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mips-cpc.h | File | 5.83 KB | 0644 |
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mips-cps.h | File | 6.55 KB | 0644 |
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mips-gic.h | File | 12.3 KB | 0644 |
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mips-r2-to-r6-emul.h | File | 2.05 KB | 0644 |
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mips_machine.h | File | 1.32 KB | 0644 |
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mips_mt.h | File | 707 B | 0644 |
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mipsmtregs.h | File | 10.9 KB | 0644 |
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mipsprom.h | File | 2.1 KB | 0644 |
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mipsregs.h | File | 88.1 KB | 0644 |
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mmu.h | File | 550 B | 0644 |
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mmu_context.h | File | 5.41 KB | 0644 |
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mmzone.h | File | 561 B | 0644 |
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module.h | File | 4.45 KB | 0644 |
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msa.h | File | 8.01 KB | 0644 |
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msc01_ic.h | File | 6.55 KB | 0644 |
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nile4.h | File | 10.33 KB | 0644 |
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paccess.h | File | 3.07 KB | 0644 |
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page.h | File | 7.19 KB | 0644 |
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pci.h | File | 4.08 KB | 0644 |
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perf_event.h | File | 482 B | 0644 |
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pgalloc.h | File | 3.21 KB | 0644 |
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pgtable-32.h | File | 7.31 KB | 0644 |
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pgtable-64.h | File | 10.87 KB | 0644 |
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pgtable-bits.h | File | 7.36 KB | 0644 |
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pgtable.h | File | 17.34 KB | 0644 |
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pm-cps.h | File | 1.68 KB | 0644 |
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pm.h | File | 3.99 KB | 0644 |
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pmon.h | File | 1.64 KB | 0644 |
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prefetch.h | File | 2.1 KB | 0644 |
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processor.h | File | 11.71 KB | 0644 |
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prom.h | File | 845 B | 0644 |
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ptrace.h | File | 5.55 KB | 0644 |
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r4k-timer.h | File | 604 B | 0644 |
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r4kcache.h | File | 26.34 KB | 0644 |
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reboot.h | File | 440 B | 0644 |
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reg.h | File | 26 B | 0644 |
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regdef.h | File | 2.63 KB | 0644 |
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rtlx.h | File | 2.1 KB | 0644 |
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seccomp.h | File | 800 B | 0644 |
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serial.h | File | 607 B | 0644 |
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setup.h | File | 884 B | 0644 |
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sgialib.h | File | 2.45 KB | 0644 |
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sgiarcs.h | File | 15.32 KB | 0644 |
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shmparam.h | File | 352 B | 0644 |
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sigcontext.h | File | 1.04 KB | 0644 |
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signal.h | File | 1.02 KB | 0644 |
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sim.h | File | 2.32 KB | 0644 |
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smp-cps.h | File | 1.18 KB | 0644 |
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smp-ops.h | File | 2.33 KB | 0644 |
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smp.h | File | 3.31 KB | 0644 |
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sni.h | File | 7.27 KB | 0644 |
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socket.h | File | 1.34 KB | 0644 |
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sparsemem.h | File | 486 B | 0644 |
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spinlock.h | File | 459 B | 0644 |
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spinlock_types.h | File | 188 B | 0644 |
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spram.h | File | 262 B | 0644 |
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stackframe.h | File | 10.82 KB | 0644 |
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stackprotector.h | File | 1.15 KB | 0644 |
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stacktrace.h | File | 2.15 KB | 0644 |
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string.h | File | 2.94 KB | 0644 |
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switch_to.h | File | 4.19 KB | 0644 |
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syscall.h | File | 3.57 KB | 0644 |
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termios.h | File | 2.89 KB | 0644 |
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thread_info.h | File | 6.63 KB | 0644 |
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time.h | File | 2.13 KB | 0644 |
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timex.h | File | 2.87 KB | 0644 |
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tlb.h | File | 1.09 KB | 0644 |
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tlbdebug.h | File | 403 B | 0644 |
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tlbex.h | File | 788 B | 0644 |
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tlbflush.h | File | 1.67 KB | 0644 |
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tlbmisc.h | File | 320 B | 0644 |
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topology.h | File | 619 B | 0644 |
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traps.h | File | 1.25 KB | 0644 |
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txx9irq.h | File | 743 B | 0644 |
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txx9pio.h | File | 592 B | 0644 |
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txx9tmr.h | File | 1.59 KB | 0644 |
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types.h | File | 487 B | 0644 |
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uaccess.h | File | 22.2 KB | 0644 |
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uasm.h | File | 9.18 KB | 0644 |
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unistd.h | File | 1.9 KB | 0644 |
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uprobes.h | File | 1.11 KB | 0644 |
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vdso.h | File | 3.72 KB | 0644 |
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vga.h | File | 1.26 KB | 0644 |
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vpe.h | File | 2.7 KB | 0644 |
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war.h | File | 7.48 KB | 0644 |
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watch.h | File | 827 B | 0644 |
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wbflush.h | File | 694 B | 0644 |
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yamon-dt.h | File | 1.88 KB | 0644 |
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