Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / score / include / asm / page.h

diff --git a/kernel/arch/score/include/asm/page.h b/kernel/arch/score/include/asm/page.h
new file mode 100644 (file)
index 0000000..1e9ade8
--- /dev/null
+++ b/kernel/arch/score/include/asm/page.h
@@ -0,0 +1,93 @@
+#ifndef _ASM_SCORE_PAGE_H
+#define _ASM_SCORE_PAGE_H
+
+#include <linux/pfn.h>
+#include <linux/const.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT     (12)
+#define PAGE_SIZE      (_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK      (~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#define PAGE_UP(addr)  (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
+#define PAGE_DOWN(addr)        ((addr)&(~((PAGE_SIZE)-1)))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size)  (((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr, size)        ((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size)     _ALIGN_UP(addr, size)
+
+/*
+ * PAGE_OFFSET -- the first address of the first page of memory. When not
+ * using MMU this corresponds to the first free page in physical memory (aligned
+ * on a page boundary).
+ */
+#define PAGE_OFFSET            (0xA0000000UL)
+
+#define clear_page(pgaddr)                     memset((pgaddr), 0, PAGE_SIZE)
+#define copy_page(to, from)                    memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(pgaddr, vaddr, page)   memset((pgaddr), 0, PAGE_SIZE)
+#define copy_user_page(vto, vfrom, vaddr, topg) \
+                       memcpy((vto), (vfrom), PAGE_SIZE)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t;           /* page table entry */
+typedef struct { unsigned long pgd; } pgd_t;           /* PGD table entry */
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_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 max_low_pfn;
+extern unsigned long min_low_pfn;
+extern unsigned long max_pfn;
+
+#define __pa(x)                ((unsigned long)(x) - PAGE_OFFSET)
+#define __va(x)                ((void *)((unsigned long) (x) + PAGE_OFFSET))
+
+#define phys_to_pfn(phys)      (PFN_DOWN(phys))
+#define pfn_to_phys(pfn)       (PFN_PHYS(pfn))
+
+#define virt_to_pfn(vaddr)     (phys_to_pfn((__pa(vaddr))))
+#define pfn_to_virt(pfn)       __va(pfn_to_phys((pfn)))
+
+#define virt_to_page(vaddr)    (pfn_to_page(virt_to_pfn(vaddr)))
+#define page_to_virt(page)     (pfn_to_virt(page_to_pfn(page)))
+
+#define page_to_phys(page)     (pfn_to_phys(page_to_pfn(page)))
+#define page_to_bus(page)      (page_to_phys(page))
+#define phys_to_page(paddr)    (pfn_to_page(phys_to_pfn(paddr)))
+
+#define pfn_valid(pfn)         (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn))
+
+#define ARCH_PFN_OFFSET                (PAGE_OFFSET >> PAGE_SHIFT)
+
+#endif /* __ASSEMBLY__ */
+
+#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
+
+#endif /* __KERNEL__ */
+
+#define VM_DATA_DEFAULT_FLAGS  (VM_READ | VM_WRITE | VM_EXEC | \
+                                VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
+
+#endif /* _ASM_SCORE_PAGE_H */