/* * Copyright 2011 Tilera Corporation. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for * more details. * */ #ifndef _ASM_TILE_PGTABLE_64_H #define _ASM_TILE_PGTABLE_64_H /* The level-0 page table breaks the address space into 32-bit chunks. */ #define PGDIR_SHIFT HV_LOG2_L1_SPAN #define PGDIR_SIZE HV_L1_SPAN #define PGDIR_MASK (~(PGDIR_SIZE-1)) #define PTRS_PER_PGD HV_L0_ENTRIES #define PGD_INDEX(va) HV_L0_INDEX(va) #define SIZEOF_PGD HV_L0_SIZE /* * The level-1 index is defined by the huge page size. A PMD is composed * of PTRS_PER_PMD pgd_t's and is the middle level of the page table. */ #define PMD_SHIFT HPAGE_SHIFT #define PMD_SIZE HPAGE_SIZE #define PMD_MASK (~(PMD_SIZE-1)) #define PTRS_PER_PMD _HV_L1_ENTRIES(HPAGE_SHIFT) #define PMD_INDEX(va) _HV_L1_INDEX(va, HPAGE_SHIFT) #define SIZEOF_PMD _HV_L1_SIZE(HPAGE_SHIFT) /* * The level-2 index is defined by the difference between the huge * page size and the normal page size. A PTE is composed of * PTRS_PER_PTE pte_t's and is the bottom level of the page table. * Note that the hypervisor docs use PTE for what we call pte_t, so * this nomenclature is somewhat confusing. */ #define PTRS_PER_PTE _HV_L2_ENTRIES(HPAGE_SHIFT, PAGE_SHIFT) #define PTE_INDEX(va) _HV_L2_INDEX(va, HPAGE_SHIFT, PAGE_SHIFT) #define SIZEOF_PTE _HV_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT) /* * Align the vmalloc area to an L2 page table. Omit guard pages at * the beginning and end for simplicity (particularly in the per-cpu * memory allocation code). The vmalloc code puts in an internal * guard page between each allocation. */ #define _VMALLOC_END MEM_SV_START #define VMALLOC_END _VMALLOC_END #define VMALLOC_START _VMALLOC_START #ifndef __ASSEMBLY__ /* We have no pud since we are a three-level page table. */ #define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopud.h> /* * pmds are the same as pgds and ptes, so converting is a no-op. */ #define pmd_pte(pmd) (pmd) #define pmdp_ptep(pmdp) (pmdp) #define pte_pmd(pte) (pte) #define pud_pte(pud) ((pud).pgd) static inline int pud_none(pud_t pud) { return pud_val(pud) == 0; } static inline int pud_present(pud_t pud) { return pud_val(pud) & _PAGE_PRESENT; } static inline int pud_huge_page(pud_t pud) { return pud_val(pud) & _PAGE_HUGE_PAGE; } #define pmd_ERROR(e) \ pr_err("%s:%d: bad pmd 0x%016llx\n", __FILE__, __LINE__, pmd_val(e)) static inline void pud_clear(pud_t *pudp) { __pte_clear(&pudp->pgd); } static inline int pud_bad(pud_t pud) { return ((pud_val(pud) & _PAGE_ALL) != _PAGE_TABLE); } /* Return the page-table frame number (ptfn) that a pud_t points at. */ #define pud_ptfn(pud) hv_pte_get_ptfn((pud).pgd) /* Return the page frame number (pfn) that a pud_t points at. */ #define pud_pfn(pud) pte_pfn(pud_pte(pud)) /* * A given kernel pud_t maps to a kernel pmd_t table at a specific * virtual address. Since kernel pmd_t tables can be aligned at * sub-page granularity, this macro can return non-page-aligned * pointers, despite its name. */ #define pud_page_vaddr(pud) \ (__va((phys_addr_t)pud_ptfn(pud) << HV_LOG2_PAGE_TABLE_ALIGN)) /* * A pud_t points to a pmd_t array. Since we can have multiple per * page, we don't have a one-to-one mapping of pud_t's to pages. */ #define pud_page(pud) pfn_to_page(PFN_DOWN(HV_PTFN_TO_CPA(pud_ptfn(pud)))) static inline unsigned long pud_index(unsigned long address) { return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1); } #define pmd_offset(pud, address) \ ((pmd_t *)pud_page_vaddr(*(pud)) + pmd_index(address)) /* Normalize an address to having the correct high bits set. */ #define pgd_addr_normalize pgd_addr_normalize static inline unsigned long pgd_addr_normalize(unsigned long addr) { return ((long)addr << (CHIP_WORD_SIZE() - CHIP_VA_WIDTH())) >> (CHIP_WORD_SIZE() - CHIP_VA_WIDTH()); } /* We don't define any pgds for these addresses. */ static inline int pgd_addr_invalid(unsigned long addr) { return addr >= KERNEL_HIGH_VADDR || addr != pgd_addr_normalize(addr); } /* * Use atomic instructions to provide atomicity against the hypervisor. */ #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { return (__insn_fetchand(&ptep->val, ~HV_PTE_ACCESSED) >> HV_PTE_INDEX_ACCESSED) & 0x1; } #define __HAVE_ARCH_PTEP_SET_WRPROTECT static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { __insn_fetchand(&ptep->val, ~HV_PTE_WRITABLE); } #define __HAVE_ARCH_PTEP_GET_AND_CLEAR static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { return hv_pte(__insn_exch(&ptep->val, 0UL)); } #endif /* __ASSEMBLY__ */ #endif /* _ASM_TILE_PGTABLE_64_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 439 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 5.14 KB | 0644 |
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atomic_32.h | File | 8.91 KB | 0644 |
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atomic_64.h | File | 5.51 KB | 0644 |
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backtrace.h | File | 3.98 KB | 0644 |
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barrier.h | File | 2.89 KB | 0644 |
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bitops.h | File | 2.37 KB | 0644 |
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bitops_32.h | File | 4.01 KB | 0644 |
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bitops_64.h | File | 2.67 KB | 0644 |
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cache.h | File | 2.6 KB | 0644 |
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cacheflush.h | File | 4.94 KB | 0644 |
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checksum.h | File | 1.23 KB | 0644 |
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cmpxchg.h | File | 3.47 KB | 0644 |
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compat.h | File | 7.38 KB | 0644 |
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current.h | File | 947 B | 0644 |
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delay.h | File | 1.1 KB | 0644 |
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device.h | File | 978 B | 0644 |
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div64.h | File | 319 B | 0644 |
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dma-mapping.h | File | 1.82 KB | 0644 |
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dma.h | File | 762 B | 0644 |
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elf.h | File | 5.42 KB | 0644 |
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fixmap.h | File | 2.73 KB | 0644 |
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ftrace.h | File | 1.08 KB | 0644 |
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futex.h | File | 4.23 KB | 0644 |
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hardirq.h | File | 1.28 KB | 0644 |
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hardwall.h | File | 1.08 KB | 0644 |
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highmem.h | File | 2.08 KB | 0644 |
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homecache.h | File | 4.21 KB | 0644 |
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hugetlb.h | File | 3.04 KB | 0644 |
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hv_driver.h | File | 1.92 KB | 0644 |
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ide.h | File | 758 B | 0644 |
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insn.h | File | 1.79 KB | 0644 |
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io.h | File | 12.43 KB | 0644 |
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irq.h | File | 3.11 KB | 0644 |
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irq_work.h | File | 283 B | 0644 |
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irqflags.h | File | 10.55 KB | 0644 |
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jump_label.h | File | 1.47 KB | 0644 |
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kdebug.h | File | 769 B | 0644 |
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kexec.h | File | 2.23 KB | 0644 |
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kgdb.h | File | 1.99 KB | 0644 |
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kmap_types.h | File | 1.02 KB | 0644 |
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kprobes.h | File | 2.19 KB | 0644 |
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linkage.h | File | 1.46 KB | 0644 |
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mmu.h | File | 965 B | 0644 |
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mmu_context.h | File | 4.5 KB | 0644 |
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mmzone.h | File | 2.07 KB | 0644 |
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module.h | File | 1.12 KB | 0644 |
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page.h | File | 10.32 KB | 0644 |
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pci.h | File | 6.58 KB | 0644 |
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percpu.h | File | 1.79 KB | 0644 |
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perf_event.h | File | 766 B | 0644 |
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pgalloc.h | File | 4.76 KB | 0644 |
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pgtable.h | File | 15.66 KB | 0644 |
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pgtable_32.h | File | 4.08 KB | 0644 |
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pgtable_64.h | File | 5.11 KB | 0644 |
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pmc.h | File | 2.15 KB | 0644 |
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processor.h | File | 10.62 KB | 0644 |
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ptrace.h | File | 2.96 KB | 0644 |
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sections.h | File | 1.37 KB | 0644 |
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setup.h | File | 1.63 KB | 0644 |
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sigframe.h | File | 956 B | 0644 |
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signal.h | File | 1.07 KB | 0644 |
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smp.h | File | 3.98 KB | 0644 |
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spinlock.h | File | 741 B | 0644 |
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spinlock_32.h | File | 2.9 KB | 0644 |
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spinlock_64.h | File | 3.88 KB | 0644 |
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spinlock_types.h | File | 1.58 KB | 0644 |
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stack.h | File | 2.59 KB | 0644 |
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string.h | File | 1.19 KB | 0644 |
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switch_to.h | File | 2.75 KB | 0644 |
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syscall.h | File | 2.88 KB | 0644 |
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syscalls.h | File | 2.35 KB | 0644 |
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thread_info.h | File | 5.54 KB | 0644 |
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tile-desc.h | File | 650 B | 0644 |
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tile-desc_32.h | File | 12.54 KB | 0644 |
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tile-desc_64.h | File | 10.83 KB | 0644 |
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timex.h | File | 1.71 KB | 0644 |
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tlb.h | File | 878 B | 0644 |
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tlbflush.h | File | 3.99 KB | 0644 |
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topology.h | File | 1.52 KB | 0644 |
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traps.h | File | 2.44 KB | 0644 |
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uaccess.h | File | 12.77 KB | 0644 |
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unaligned.h | File | 1.56 KB | 0644 |
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unistd.h | File | 777 B | 0644 |
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user.h | File | 717 B | 0644 |
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vdso.h | File | 1.84 KB | 0644 |
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vga.h | File | 1.05 KB | 0644 |
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word-at-a-time.h | File | 1.07 KB | 0644 |
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