/* MN10300 Page table definitions * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #ifndef _ASM_PAGE_H #define _ASM_PAGE_H /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 #ifndef __ASSEMBLY__ #define PAGE_SIZE (1UL << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE - 1)) #else #define PAGE_SIZE +(1 << PAGE_SHIFT) /* unary plus marks an * immediate val not an addr */ #define PAGE_MASK +(~(PAGE_SIZE - 1)) #endif #ifdef __KERNEL__ #ifndef __ASSEMBLY__ #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) #define copy_page(to, from) memcpy((void *)(to), (void *)(from), PAGE_SIZE) #define clear_user_page(addr, vaddr, page) clear_page(addr) #define copy_user_page(vto, vfrom, vaddr, to) copy_page(vto, vfrom) /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct page *pgtable_t; #define PTE_MASK PAGE_MASK #define HPAGE_SHIFT 22 #ifdef CONFIG_HUGETLB_PAGE #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) #endif #define pte_val(x) ((x).pte) #define pgd_val(x) ((x).pgd) #define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) }) #define __pgd(x) ((pgd_t) { (x) }) #define __pgprot(x) ((pgprot_t) { (x) }) #define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> #endif /* !__ASSEMBLY__ */ /* * This handles the memory map.. We could make this a config * option, but too many people screw it up, and too few need * it. * * A __PAGE_OFFSET of 0xC0000000 means that the kernel has * a virtual address space of one gigabyte, which limits the * amount of physical memory you can use to about 950MB. */ #ifndef __ASSEMBLY__ /* Pure 2^n version of get_order */ static inline int get_order(unsigned long size) __attribute__((const)); static inline int get_order(unsigned long size) { int order; size = (size - 1) >> (PAGE_SHIFT - 1); order = -1; do { size >>= 1; order++; } while (size); return order; } #endif /* __ASSEMBLY__ */ #include <asm/page_offset.h> #define __PAGE_OFFSET (PAGE_OFFSET_RAW) #define PAGE_OFFSET ((unsigned long) __PAGE_OFFSET) /* * main RAM and kernel working space are coincident at 0x90000000, but to make * life more interesting, there's also an uncached virtual shadow at 0xb0000000 * - these mappings are fixed in the MMU */ #define __pfn_disp (CONFIG_KERNEL_RAM_BASE_ADDRESS >> PAGE_SHIFT) #define __pa(x) ((unsigned long)(x)) #define __va(x) ((void *)(unsigned long)(x)) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) #define pfn_to_page(pfn) (mem_map + ((pfn) - __pfn_disp)) #define page_to_pfn(page) ((unsigned long)((page) - mem_map) + __pfn_disp) #define __pfn_to_phys(pfn) PFN_PHYS(pfn) #define pfn_valid(pfn) \ ({ \ unsigned long __pfn = (pfn) - __pfn_disp; \ __pfn < max_mapnr; \ }) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) #define VM_DATA_DEFAULT_FLAGS \ (VM_READ | VM_WRITE | \ ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #endif /* __KERNEL__ */ #endif /* _ASM_PAGE_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 314 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 4.02 KB | 0644 |
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bitops.h | File | 5.42 KB | 0644 |
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bug.h | File | 864 B | 0644 |
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bugs.h | File | 561 B | 0644 |
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busctl-regs.h | File | 7.8 KB | 0644 |
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cache.h | File | 2.06 KB | 0644 |
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cacheflush.h | File | 7.6 KB | 0644 |
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checksum.h | File | 2.09 KB | 0644 |
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cmpxchg.h | File | 2.65 KB | 0644 |
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cpu-regs.h | File | 16.61 KB | 0644 |
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current.h | File | 922 B | 0644 |
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debugger.h | File | 1.2 KB | 0644 |
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delay.h | File | 597 B | 0644 |
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div64.h | File | 3.21 KB | 0644 |
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dma-mapping.h | File | 636 B | 0644 |
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dma.h | File | 3.09 KB | 0644 |
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dmactl-regs.h | File | 532 B | 0644 |
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elf.h | File | 4.49 KB | 0644 |
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emergency-restart.h | File | 43 B | 0644 |
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exceptions.h | File | 4.74 KB | 0644 |
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fpu.h | File | 3.57 KB | 0644 |
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frame.inc | File | 2.37 KB | 0644 |
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ftrace.h | File | 12 B | 0644 |
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futex.h | File | 31 B | 0644 |
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gdb-stub.h | File | 5.42 KB | 0644 |
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hardirq.h | File | 1.68 KB | 0644 |
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highmem.h | File | 3.01 KB | 0644 |
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hw_irq.h | File | 483 B | 0644 |
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intctl-regs.h | File | 2.26 KB | 0644 |
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io.h | File | 7.67 KB | 0644 |
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irq.h | File | 1.11 KB | 0644 |
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irq_regs.h | File | 751 B | 0644 |
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irqflags.h | File | 4.05 KB | 0644 |
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kdebug.h | File | 561 B | 0644 |
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kgdb.h | File | 1.7 KB | 0644 |
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kmap_types.h | File | 160 B | 0644 |
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kprobes.h | File | 1.59 KB | 0644 |
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linkage.h | File | 593 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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mc146818rtc.h | File | 26 B | 0644 |
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mmu.h | File | 434 B | 0644 |
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mmu_context.h | File | 4.44 KB | 0644 |
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module.h | File | 677 B | 0644 |
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nmi.h | File | 500 B | 0644 |
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page.h | File | 3.63 KB | 0644 |
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page_offset.h | File | 302 B | 0644 |
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pci.h | File | 2.17 KB | 0644 |
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percpu.h | File | 32 B | 0644 |
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pgalloc.h | File | 1.49 KB | 0644 |
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pgtable.h | File | 15.68 KB | 0644 |
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pio-regs.h | File | 7.53 KB | 0644 |
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processor.h | File | 4.12 KB | 0644 |
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ptrace.h | File | 805 B | 0644 |
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reset-regs.h | File | 1.8 KB | 0644 |
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rtc-regs.h | File | 3.57 KB | 0644 |
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rtc.h | File | 692 B | 0644 |
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rwlock.h | File | 2.98 KB | 0644 |
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serial-regs.h | File | 8.85 KB | 0644 |
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serial.h | File | 1.02 KB | 0644 |
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setup.h | File | 574 B | 0644 |
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shmparam.h | File | 182 B | 0644 |
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signal.h | File | 888 B | 0644 |
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smp.h | File | 3.06 KB | 0644 |
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smsc911x.h | File | 27 B | 0644 |
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spinlock.h | File | 3.84 KB | 0644 |
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spinlock_types.h | File | 445 B | 0644 |
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string.h | File | 1.03 KB | 0644 |
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switch_to.h | File | 1.49 KB | 0644 |
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syscall.h | File | 2.38 KB | 0644 |
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termios.h | File | 387 B | 0644 |
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thread_info.h | File | 4.36 KB | 0644 |
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timer-regs.h | File | 20.72 KB | 0644 |
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timex.h | File | 843 B | 0644 |
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tlb.h | File | 941 B | 0644 |
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tlbflush.h | File | 3.45 KB | 0644 |
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topology.h | File | 34 B | 0644 |
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types.h | File | 620 B | 0644 |
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uaccess.h | File | 7.78 KB | 0644 |
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ucontext.h | File | 673 B | 0644 |
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unaligned.h | File | 678 B | 0644 |
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unistd.h | File | 1.34 KB | 0644 |
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user.h | File | 1.91 KB | 0644 |
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vga.h | File | 471 B | 0644 |
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xor.h | File | 29 B | 0644 |
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