Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / include / asm / page_32.h

diff --git a/kernel/arch/powerpc/include/asm/page_32.h b/kernel/arch/powerpc/include/asm/page_32.h
new file mode 100644 (file)
index 0000000..68d73b2
--- /dev/null
+++ b/kernel/arch/powerpc/include/asm/page_32.h
@@ -0,0 +1,51 @@
+#ifndef _ASM_POWERPC_PAGE_32_H
+#define _ASM_POWERPC_PAGE_32_H
+
+#if defined(CONFIG_PHYSICAL_ALIGN) && (CONFIG_PHYSICAL_START != 0)
+#if (CONFIG_PHYSICAL_START % CONFIG_PHYSICAL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of CONFIG_PHYSICAL_ALIGN"
+#endif
+#endif
+
+#define VM_DATA_DEFAULT_FLAGS  VM_DATA_DEFAULT_FLAGS32
+
+#ifdef CONFIG_NOT_COHERENT_CACHE
+#define ARCH_DMA_MINALIGN      L1_CACHE_BYTES
+#endif
+
+#ifdef CONFIG_PTE_64BIT
+#define PTE_FLAGS_OFFSET       4       /* offset of PTE flags, in bytes */
+#else
+#define PTE_FLAGS_OFFSET       0
+#endif
+
+#ifdef CONFIG_PPC_256K_PAGES
+#define PTE_SHIFT      (PAGE_SHIFT - PTE_T_LOG2 - 2)   /* 1/4 of a page */
+#else
+#define PTE_SHIFT      (PAGE_SHIFT - PTE_T_LOG2)       /* full page */
+#endif
+
+#ifndef __ASSEMBLY__
+/*
+ * The basic type of a PTE - 64 bits for those CPUs with > 32 bit
+ * physical addressing.
+ */
+#ifdef CONFIG_PTE_64BIT
+typedef unsigned long long pte_basic_t;
+#else
+typedef unsigned long pte_basic_t;
+#endif
+
+struct page;
+extern void clear_pages(void *page, int order);
+static inline void clear_page(void *page) { clear_pages(page, 0); }
+extern void copy_page(void *to, void *from);
+
+#include <asm-generic/getorder.h>
+
+#define PGD_T_LOG2     (__builtin_ffs(sizeof(pgd_t)) - 1)
+#define PTE_T_LOG2     (__builtin_ffs(sizeof(pte_t)) - 1)
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_POWERPC_PAGE_32_H */