Memory controller improve user interface

[safe/jmp/linux-2.6] / include / asm-ia64 / page.h

diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h
index ec17f9e..d634546 100644 (file)
--- a/include/asm-ia64/page.h
+++ b/include/asm-ia64/page.h
@@ -7,7 +7,7 @@
  *     David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
-#include <linux/config.h>
+# ifdef __KERNEL__
 
 #include <asm/intrinsics.h>
 #include <asm/types.h>
@@ -17,9 +17,9 @@
  * Different regions are assigned to different purposes.
  */
 #define RGN_SHIFT      (61)
-#define RGN_BASE(r)  (__IA64_UL_CONST(r)<<RGN_SHIFT)
+#define RGN_BASE(r)    (__IA64_UL_CONST(r)<<RGN_SHIFT)
+#define RGN_BITS       (RGN_BASE(-1))
 
-#define KHIGH -1       /* high three bits of Kernel virtual address */
 #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 */
@@ -47,8 +47,6 @@
 #define PERCPU_PAGE_SHIFT      16      /* log2() of max. size of per-CPU area */
 #define PERCPU_PAGE_SIZE       (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT)
 
-#define RGN_MAP_LIMIT  ((1UL << (4*PAGE_SHIFT - 12)) - PAGE_SIZE)      /* per region addr limit */
-
 
 #ifdef CONFIG_HUGETLB_PAGE
 # define HPAGE_REGION_BASE     RGN_BASE(RGN_HPAGE)
@@ -59,13 +57,14 @@
 
 # define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 # define ARCH_HAS_HUGEPAGE_ONLY_RANGE
+# define ARCH_HAS_PREPARE_HUGEPAGE_RANGE
+# define ARCH_HAS_HUGETLB_FREE_PGD_RANGE
 #endif /* CONFIG_HUGETLB_PAGE */
 
 #ifdef __ASSEMBLY__
 # define __pa(x)               ((x) - PAGE_OFFSET)
 # define __va(x)               ((x) + PAGE_OFFSET)
 #else /* !__ASSEMBLY */
-# ifdef __KERNEL__
 #  define STRICT_MM_TYPECHECKS
 
 extern void clear_page (void *page);
@@ -88,12 +87,13 @@ do {                                                \
 } while (0)
 
 
-#define alloc_zeroed_user_highpage(vma, vaddr) \
-({                                             \
-       struct page *page = alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr); \
-       if (page)                               \
-               flush_dcache_page(page);        \
-       page;                                   \
+#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
@@ -106,20 +106,29 @@ extern int ia64_pfn_valid (unsigned long pfn);
 # define ia64_pfn_valid(pfn) 1
 #endif
 
-#ifndef CONFIG_DISCONTIGMEM
-# define pfn_valid(pfn)                (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
-# define page_to_pfn(page)     ((unsigned long) (page - mem_map))
-# define pfn_to_page(pfn)      (mem_map + (pfn))
-#else
+#ifdef CONFIG_VIRTUAL_MEM_MAP
 extern struct page *vmem_map;
-extern unsigned long max_low_pfn;
-# define pfn_valid(pfn)                (((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
+#ifdef CONFIG_DISCONTIGMEM
 # define page_to_pfn(page)     ((unsigned long) (page - vmem_map))
 # define pfn_to_page(pfn)      (vmem_map + (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 {
@@ -147,7 +156,7 @@ typedef union ia64_va {
                                 | (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT)))
 # define HUGETLB_PAGE_ORDER    (HPAGE_SHIFT - PAGE_SHIFT)
 # define is_hugepage_only_range(mm, addr, len)         \
-        (REGION_NUMBER(addr) == RGN_HPAGE &&   \
+        (REGION_NUMBER(addr) == RGN_HPAGE ||   \
          REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE)
 extern unsigned int hpage_shift;
 #endif
@@ -165,7 +174,6 @@ get_order (unsigned long size)
        return order;
 }
 
-# endif /* __KERNEL__ */
 #endif /* !__ASSEMBLY__ */
 
 #ifdef STRICT_MM_TYPECHECKS
@@ -174,11 +182,17 @@ get_order (unsigned long size)
    */
   typedef struct { unsigned long pte; } pte_t;
   typedef struct { unsigned long pmd; } pmd_t;
+#ifdef CONFIG_PGTABLE_4
+  typedef struct { unsigned long pud; } pud_t;
+#endif
   typedef struct { unsigned long pgd; } pgd_t;
   typedef struct { unsigned long pgprot; } pgprot_t;
 
 # define pte_val(x)    ((x).pte)
 # define pmd_val(x)    ((x).pmd)
+#ifdef CONFIG_PGTABLE_4
+# define pud_val(x)    ((x).pud)
+#endif
 # define pgd_val(x)    ((x).pgd)
 # define pgprot_val(x) ((x).pgprot)
 
@@ -213,4 +227,5 @@ get_order (unsigned long size)
                                         (((current->personality & READ_IMPLIES_EXEC) != 0)     \
                                          ? VM_EXEC : 0))
 
+# endif /* __KERNEL__ */
 #endif /* _ASM_IA64_PAGE_H */