From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/nios2/include/asm/page.h | 109 +++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 kernel/arch/nios2/include/asm/page.h (limited to 'kernel/arch/nios2/include/asm/page.h') diff --git a/kernel/arch/nios2/include/asm/page.h b/kernel/arch/nios2/include/asm/page.h new file mode 100644 index 000000000..4b32d6fd9 --- /dev/null +++ b/kernel/arch/nios2/include/asm/page.h @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2011 Tobias Klauser + * Copyright (C) 2004 Microtronix Datacom Ltd. + * + * MMU support based on asm/page.h from mips which is: + * + * Copyright (C) 1994 - 1999, 2000, 03 Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + * + * 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. + */ + +#ifndef _ASM_NIOS2_PAGE_H +#define _ASM_NIOS2_PAGE_H + +#include +#include + +/* + * PAGE_SHIFT determines the page size + */ +#define PAGE_SHIFT 12 +#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE - 1)) + +/* + * PAGE_OFFSET -- the first address of the first page of memory. + */ +#define PAGE_OFFSET \ + (CONFIG_NIOS2_MEM_BASE + CONFIG_NIOS2_KERNEL_REGION_BASE) + +#ifndef __ASSEMBLY__ + +/* + * This gives the physical RAM offset. + */ +#define PHYS_OFFSET CONFIG_NIOS2_MEM_BASE + +/* + * It's normally defined only for FLATMEM config but it's + * used in our early mem init code for all memory models. + * So always define it. + */ +#define ARCH_PFN_OFFSET PFN_UP(PHYS_OFFSET) + +#define clear_page(page) memset((page), 0, PAGE_SIZE) +#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) + +struct page; + +extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page); +extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, + struct page *to); + +/* + * These are used to make use of C type-checking. + */ +typedef struct page *pgtable_t; +typedef struct { unsigned long pte; } pte_t; +typedef struct { unsigned long pgd; } pgd_t; +typedef struct { unsigned long pgprot; } pgprot_t; + +#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) }) + +extern unsigned long memory_start; +extern unsigned long memory_end; +extern unsigned long memory_size; + +extern struct page *mem_map; + +#endif /* !__ASSEMBLY__ */ + +# define __pa(x) \ + ((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET) +# define __va(x) \ + ((void *)((unsigned long)(x) + PAGE_OFFSET - PHYS_OFFSET)) + +#define page_to_virt(page) \ + ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) + +# define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) +# define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && \ + (pfn) < max_mapnr) + +# define virt_to_page(vaddr) pfn_to_page(PFN_DOWN(virt_to_phys(vaddr))) +# define virt_addr_valid(vaddr) pfn_valid(PFN_DOWN(virt_to_phys(vaddr))) + +# define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +# define UNCAC_ADDR(addr) \ + ((void *)((unsigned)(addr) | CONFIG_NIOS2_IO_REGION_BASE)) +# define CAC_ADDR(addr) \ + ((void *)(((unsigned)(addr) & ~CONFIG_NIOS2_IO_REGION_BASE) | \ + CONFIG_NIOS2_KERNEL_REGION_BASE)) + +#include + +#include + +#endif /* _ASM_NIOS2_PAGE_H */ -- cgit 1.2.3-korg