/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_IA64_PAGE_H #define _ASM_IA64_PAGE_H /* * Pagetable related stuff. * * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co * David Mosberger-Tang <davidm@hpl.hp.com> */ #include <asm/intrinsics.h> #include <asm/types.h> /* * The top three bits of an IA64 address are its Region Number. * Different regions are assigned to different purposes. */ #define RGN_SHIFT (61) #define RGN_BASE(r) (__IA64_UL_CONST(r)<<RGN_SHIFT) #define RGN_BITS (RGN_BASE(-1)) #define RGN_KERNEL 7 /* Identity mapped region */ #define RGN_UNCACHED 6 /* Identity mapped I/O region */ #define RGN_GATE 5 /* Gate page, Kernel text, etc */ #define RGN_HPAGE 4 /* For Huge TLB pages */ /* * PAGE_SHIFT determines the actual kernel page size. */ #if defined(CONFIG_IA64_PAGE_SIZE_4KB) # define PAGE_SHIFT 12 #elif defined(CONFIG_IA64_PAGE_SIZE_8KB) # define PAGE_SHIFT 13 #elif defined(CONFIG_IA64_PAGE_SIZE_16KB) # define PAGE_SHIFT 14 #elif defined(CONFIG_IA64_PAGE_SIZE_64KB) # define PAGE_SHIFT 16 #else # error Unsupported page size! #endif #define PAGE_SIZE (__IA64_UL_CONST(1) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE - 1)) #define PERCPU_PAGE_SHIFT 18 /* log2() of max. size of per-CPU area */ #define PERCPU_PAGE_SIZE (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT) #ifdef CONFIG_HUGETLB_PAGE # define HPAGE_REGION_BASE RGN_BASE(RGN_HPAGE) # define HPAGE_SHIFT hpage_shift # define HPAGE_SHIFT_DEFAULT 28 /* check ia64 SDM for architecture supported size */ # define HPAGE_SIZE (__IA64_UL_CONST(1) << HPAGE_SHIFT) # define HPAGE_MASK (~(HPAGE_SIZE - 1)) # define HAVE_ARCH_HUGETLB_UNMAPPED_AREA #endif /* CONFIG_HUGETLB_PAGE */ #ifdef __ASSEMBLY__ # define __pa(x) ((x) - PAGE_OFFSET) # define __va(x) ((x) + PAGE_OFFSET) #else /* !__ASSEMBLY */ # define STRICT_MM_TYPECHECKS extern void clear_page (void *page); extern void copy_page (void *to, void *from); /* * clear_user_page() and copy_user_page() can't be inline functions because * flush_dcache_page() can't be defined until later... */ #define clear_user_page(addr, vaddr, page) \ do { \ clear_page(addr); \ flush_dcache_page(page); \ } while (0) #define copy_user_page(to, from, vaddr, page) \ do { \ copy_page((to), (from)); \ flush_dcache_page(page); \ } while (0) #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ ({ \ struct page *page = alloc_page_vma( \ GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr); \ if (page) \ flush_dcache_page(page); \ page; \ }) #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #ifdef CONFIG_VIRTUAL_MEM_MAP extern int ia64_pfn_valid (unsigned long pfn); #else # define ia64_pfn_valid(pfn) 1 #endif #ifdef CONFIG_VIRTUAL_MEM_MAP extern struct page *vmem_map; #ifdef CONFIG_DISCONTIGMEM # define page_to_pfn(page) ((unsigned long) (page - vmem_map)) # define pfn_to_page(pfn) (vmem_map + (pfn)) # define __pfn_to_phys(pfn) PFN_PHYS(pfn) #else # include <asm-generic/memory_model.h> #endif #else # include <asm-generic/memory_model.h> #endif #ifdef CONFIG_FLATMEM # define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn)) #elif defined(CONFIG_DISCONTIGMEM) extern unsigned long min_low_pfn; extern unsigned long max_low_pfn; # define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn)) #endif #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) typedef union ia64_va { struct { unsigned long off : 61; /* intra-region offset */ unsigned long reg : 3; /* region number */ } f; unsigned long l; void *p; } ia64_va; /* * Note: These macros depend on the fact that PAGE_OFFSET has all * region bits set to 1 and all other bits set to zero. They are * expressed in this way to ensure they result in a single "dep" * instruction. */ #define __pa(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg = 0; _v.l;}) #define __va(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg = -1; _v.p;}) #define REGION_NUMBER(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg;}) #define REGION_OFFSET(x) ({ia64_va _v; _v.l = (long) (x); _v.f.off;}) #ifdef CONFIG_HUGETLB_PAGE # define htlbpage_to_page(x) (((unsigned long) REGION_NUMBER(x) << 61) \ | (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT))) # define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) extern unsigned int hpage_shift; #endif static __inline__ int get_order (unsigned long size) { long double d = size - 1; long order; order = ia64_getf_exp(d); order = order - PAGE_SHIFT - 0xffff + 1; if (order < 0) order = 0; return order; } #endif /* !__ASSEMBLY__ */ #ifdef STRICT_MM_TYPECHECKS /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd; } pmd_t; #if CONFIG_PGTABLE_LEVELS == 4 typedef struct { unsigned long pud; } pud_t; #endif typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct page *pgtable_t; # define pte_val(x) ((x).pte) # define pmd_val(x) ((x).pmd) #if CONFIG_PGTABLE_LEVELS == 4 # define pud_val(x) ((x).pud) #endif # define pgd_val(x) ((x).pgd) # define pgprot_val(x) ((x).pgprot) # define __pte(x) ((pte_t) { (x) } ) # define __pmd(x) ((pmd_t) { (x) } ) # define __pgprot(x) ((pgprot_t) { (x) } ) #else /* !STRICT_MM_TYPECHECKS */ /* * .. while these make it easier on the compiler */ # ifndef __ASSEMBLY__ typedef unsigned long pte_t; typedef unsigned long pmd_t; typedef unsigned long pgd_t; typedef unsigned long pgprot_t; typedef struct page *pgtable_t; # endif # define pte_val(x) (x) # define pmd_val(x) (x) # define pgd_val(x) (x) # define pgprot_val(x) (x) # define __pte(x) (x) # define __pgd(x) (x) # define __pgprot(x) (x) #endif /* !STRICT_MM_TYPECHECKS */ #define PAGE_OFFSET RGN_BASE(RGN_KERNEL) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \ (((current->personality & READ_IMPLIES_EXEC) != 0) \ ? VM_EXEC : 0)) #define GATE_ADDR RGN_BASE(RGN_GATE) /* * 0xa000000000000000+2*PERCPU_PAGE_SIZE * - 0xa000000000000000+3*PERCPU_PAGE_SIZE remain unmapped (guard page) */ #define KERNEL_START (GATE_ADDR+__IA64_UL_CONST(0x100000000)) #define PERCPU_ADDR (-PERCPU_PAGE_SIZE) #define LOAD_OFFSET (KERNEL_START - KERNEL_TR_PAGE_SIZE) #define __HAVE_ARCH_GATE_AREA 1 #endif /* _ASM_IA64_PAGE_H */
Name | Type | Size | Permission | Actions |
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native | Folder | 0755 |
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sn | Folder | 0755 |
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uv | Folder | 0755 |
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Kbuild | File | 224 B | 0644 |
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acenv.h | File | 1.27 KB | 0644 |
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acpi-ext.h | File | 590 B | 0644 |
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acpi.h | File | 4.1 KB | 0644 |
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agp.h | File | 857 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-prototypes.h | File | 890 B | 0644 |
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asmmacro.h | File | 3.29 KB | 0644 |
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atomic.h | File | 9.47 KB | 0644 |
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barrier.h | File | 2.36 KB | 0644 |
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bitops.h | File | 10.84 KB | 0644 |
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bug.h | File | 404 B | 0644 |
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bugs.h | File | 436 B | 0644 |
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cache.h | File | 771 B | 0644 |
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cacheflush.h | File | 1.71 KB | 0644 |
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checksum.h | File | 2.1 KB | 0644 |
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clocksource.h | File | 276 B | 0644 |
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cpu.h | File | 456 B | 0644 |
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cputime.h | File | 855 B | 0644 |
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current.h | File | 418 B | 0644 |
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cyclone.h | File | 442 B | 0644 |
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delay.h | File | 1.7 KB | 0644 |
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device.h | File | 323 B | 0644 |
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div64.h | File | 31 B | 0644 |
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dma-mapping.h | File | 1.17 KB | 0644 |
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dma.h | File | 466 B | 0644 |
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dmi.h | File | 343 B | 0644 |
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early_ioremap.h | File | 428 B | 0644 |
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elf.h | File | 9.83 KB | 0644 |
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emergency-restart.h | File | 149 B | 0644 |
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esi.h | File | 887 B | 0644 |
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exception.h | File | 1.13 KB | 0644 |
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export.h | File | 115 B | 0644 |
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extable.h | File | 330 B | 0644 |
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fb.h | File | 569 B | 0644 |
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fpswa.h | File | 1.88 KB | 0644 |
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ftrace.h | File | 748 B | 0644 |
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futex.h | File | 2.56 KB | 0644 |
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gcc_intrin.h | File | 368 B | 0644 |
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hardirq.h | File | 564 B | 0644 |
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hpsim.h | File | 364 B | 0644 |
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hugetlb.h | File | 1.67 KB | 0644 |
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hw_irq.h | File | 6.33 KB | 0644 |
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idle.h | File | 200 B | 0644 |
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intrinsics.h | File | 306 B | 0644 |
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io.h | File | 11.77 KB | 0644 |
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iommu.h | File | 555 B | 0644 |
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iommu_table.h | File | 175 B | 0644 |
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iosapic.h | File | 3.16 KB | 0644 |
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irq.h | File | 1.02 KB | 0644 |
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irq_regs.h | File | 34 B | 0644 |
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irq_remapping.h | File | 142 B | 0644 |
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irqflags.h | File | 2.11 KB | 0644 |
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kdebug.h | File | 1.64 KB | 0644 |
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kexec.h | File | 1.57 KB | 0644 |
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kmap_types.h | File | 260 B | 0644 |
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kprobes.h | File | 3.82 KB | 0644 |
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kregs.h | File | 6.73 KB | 0644 |
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libata-portmap.h | File | 225 B | 0644 |
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linkage.h | File | 398 B | 0644 |
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local.h | File | 31 B | 0644 |
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local64.h | File | 33 B | 0644 |
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machvec.h | File | 12.1 KB | 0644 |
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machvec_dig.h | File | 449 B | 0644 |
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machvec_dig_vtd.h | File | 558 B | 0644 |
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machvec_hpsim.h | File | 544 B | 0644 |
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machvec_hpzx1.h | File | 544 B | 0644 |
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machvec_hpzx1_swiotlb.h | File | 632 B | 0644 |
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machvec_init.h | File | 1.33 KB | 0644 |
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machvec_sn2.h | File | 4.71 KB | 0644 |
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machvec_uv.h | File | 684 B | 0644 |
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mca.h | File | 5.91 KB | 0644 |
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mca_asm.h | File | 7.18 KB | 0644 |
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meminit.h | File | 2.24 KB | 0644 |
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mman.h | File | 432 B | 0644 |
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mmu.h | File | 374 B | 0644 |
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mmu_context.h | File | 5.29 KB | 0644 |
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mmzone.h | File | 1.1 KB | 0644 |
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module.h | File | 1.1 KB | 0644 |
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msidef.h | File | 1.4 KB | 0644 |
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nodedata.h | File | 1.85 KB | 0644 |
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numa.h | File | 2.18 KB | 0644 |
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page.h | File | 6.49 KB | 0644 |
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pal.h | File | 53.39 KB | 0644 |
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param.h | File | 439 B | 0644 |
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parport.h | File | 534 B | 0644 |
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patch.h | File | 1.19 KB | 0644 |
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pci.h | File | 2.83 KB | 0644 |
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percpu.h | File | 1.32 KB | 0644 |
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perfmon.h | File | 4.33 KB | 0644 |
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pgalloc.h | File | 2.84 KB | 0644 |
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pgtable.h | File | 20.92 KB | 0644 |
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processor.h | File | 17.98 KB | 0644 |
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ptrace.h | File | 5.2 KB | 0644 |
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rwsem.h | File | 3.82 KB | 0644 |
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sal.h | File | 26.51 KB | 0644 |
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sections.h | File | 1.35 KB | 0644 |
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segment.h | File | 162 B | 0644 |
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serial.h | File | 446 B | 0644 |
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shmparam.h | File | 445 B | 0644 |
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signal.h | File | 749 B | 0644 |
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smp.h | File | 3.21 KB | 0644 |
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sparsemem.h | File | 621 B | 0644 |
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spinlock.h | File | 6.92 KB | 0644 |
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spinlock_types.h | File | 475 B | 0644 |
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string.h | File | 659 B | 0644 |
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swiotlb.h | File | 344 B | 0644 |
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switch_to.h | File | 2.89 KB | 0644 |
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syscall.h | File | 2.06 KB | 0644 |
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termios.h | File | 1.88 KB | 0644 |
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thread_info.h | File | 4.66 KB | 0644 |
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timex.h | File | 1.47 KB | 0644 |
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tlb.h | File | 8.42 KB | 0644 |
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tlbflush.h | File | 2.33 KB | 0644 |
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topology.h | File | 1.58 KB | 0644 |
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types.h | File | 828 B | 0644 |
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uaccess.h | File | 9.86 KB | 0644 |
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unaligned.h | File | 337 B | 0644 |
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uncached.h | File | 463 B | 0644 |
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unistd.h | File | 1.45 KB | 0644 |
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unwind.h | File | 5.74 KB | 0644 |
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user.h | File | 2.25 KB | 0644 |
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ustack.h | File | 403 B | 0644 |
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vga.h | File | 657 B | 0644 |
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xor.h | File | 1.12 KB | 0644 |
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