#include <asm/intrinsics.h>
#include <asm/types.h>
+/*
+ * The top three bits of an IA64 address are its Region Number.
+ * Different regions are assigned to different purposes.
+ */
+#define RGN_SHIFT (61)
+#define RGN_BASE(r) (__IA64_UL_CONST(r)<<RGN_SHIFT)
+#define RGN_BITS (RGN_BASE(-1))
+
+#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 */
+#define RGN_HPAGE 4 /* For Huge TLB pages */
+
/*
* PAGE_SHIFT determines the actual kernel page size.
*/
#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 REGION_HPAGE (4UL) /* note: this is hardcoded in reload_context()!*/
-# define REGION_SHIFT 61
-# define HPAGE_REGION_BASE (REGION_HPAGE << REGION_SHIFT)
+# define HPAGE_REGION_BASE RGN_BASE(RGN_HPAGE)
# define HPAGE_SHIFT hpage_shift
# define HPAGE_SHIFT_DEFAULT 28 /* check ia64 SDM for architecture supported size */
# define HPAGE_SIZE (__IA64_UL_CONST(1) << HPAGE_SHIFT)
flush_dcache_page(page); \
} 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 __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#ifdef CONFIG_VIRTUAL_MEM_MAP
extern int ia64_pfn_valid (unsigned long pfn);
-#else
+#elif defined(CONFIG_FLATMEM)
# 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))
-#endif /* CONFIG_DISCONTIGMEM */
+#ifdef CONFIG_FLATMEM
+# 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))
+#elif defined(CONFIG_DISCONTIGMEM)
+extern struct page *vmem_map;
+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))
+# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
+# define pfn_to_page(pfn) (vmem_map + (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 {
#define REGION_NUMBER(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg;})
#define REGION_OFFSET(x) ({ia64_va _v; _v.l = (long) (x); _v.f.off;})
-#define REGION_SIZE REGION_NUMBER(1)
-#define REGION_KERNEL 7
-
#ifdef CONFIG_HUGETLB_PAGE
-# define htlbpage_to_page(x) ((REGION_NUMBER(x) << 61) \
+# define htlbpage_to_page(x) (((unsigned long) REGION_NUMBER(x) << 61) \
| (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT)))
# define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-# define is_hugepage_only_range(addr, len) \
- (REGION_NUMBER(addr) == REGION_HPAGE && \
- REGION_NUMBER((addr)+(len)) == REGION_HPAGE)
+# define is_hugepage_only_range(mm, addr, len) \
+ (REGION_NUMBER(addr) == RGN_HPAGE && \
+ REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE)
extern unsigned int hpage_shift;
#endif
*/
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)
# define __pgprot(x) (x)
#endif /* !STRICT_MM_TYPECHECKS */
-#define PAGE_OFFSET 0xe000000000000000
+#define PAGE_OFFSET RGN_BASE(RGN_KERNEL)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \
(((current->personality & READ_IMPLIES_EXEC) != 0) \
? VM_EXEC : 0))
-#define devmem_is_allowed(x) 1
-
#endif /* _ASM_IA64_PAGE_H */