#ifndef _SPARC64_PAGE_H
#define _SPARC64_PAGE_H
-#include <linux/config.h>
+#ifdef __KERNEL__
+
#include <asm/const.h>
+#if defined(CONFIG_SPARC64_PAGE_SIZE_8KB)
#define PAGE_SHIFT 13
+#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB)
+#define PAGE_SHIFT 16
+#elif defined(CONFIG_SPARC64_PAGE_SIZE_512KB)
+#define PAGE_SHIFT 19
+#elif defined(CONFIG_SPARC64_PAGE_SIZE_4MB)
+#define PAGE_SHIFT 22
+#else
+#error No page size specified in kernel configuration
+#endif
+
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
-#ifdef __KERNEL__
+/* Flushing for D-cache alias handling is only needed if
+ * the page size is smaller than 16K.
+ */
+#if PAGE_SHIFT < 14
+#define DCACHE_ALIASING_POSSIBLE
+#endif
-#ifndef __ASSEMBLY__
+#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
+#define HPAGE_SHIFT 22
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
+#define HPAGE_SHIFT 19
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
+#define HPAGE_SHIFT 16
+#endif
-/* Sparc64 is slow at multiplication, we prefer to use some extra space. */
-#define WANT_PAGE_VIRTUAL 1
+#ifdef CONFIG_HUGETLB_PAGE
+#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
+#define HPAGE_MASK (~(HPAGE_SIZE - 1UL))
+#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
+#define ARCH_HAS_SETCLEAR_HUGE_PTE
+#define ARCH_HAS_HUGETLB_PREFAULT_HOOK
+#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
+#endif
+
+#ifndef __ASSEMBLY__
extern void _clear_page(void *page);
#define clear_page(X) _clear_page((void *)(X))
struct page;
extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page);
-#define copy_page(X,Y) __memcpy((void *)(X), (void *)(Y), PAGE_SIZE)
+#define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE)
extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage);
-/* GROSS, defining this makes gcc pass these types as aggregates,
- * and thus on the stack, turn this crap off... -DaveM
+/* Unlike sparc32, sparc64's parameter passing API is more
+ * sane in that structures which as small enough are passed
+ * in registers instead of on the stack. Thus, setting
+ * STRICT_MM_TYPECHECKS does not generate worse code so
+ * let's enable it to get the type checking.
*/
-/* #define STRICT_MM_TYPECHECKS */
+#define STRICT_MM_TYPECHECKS
#ifdef STRICT_MM_TYPECHECKS
/* These are used to make use of C type-checking.. */
typedef struct { unsigned long iopte; } iopte_t;
typedef struct { unsigned int pmd; } pmd_t;
typedef struct { unsigned int pgd; } pgd_t;
-typedef struct { unsigned long ctxd; } ctxd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
-typedef struct { unsigned long iopgprot; } iopgprot_t;
#define pte_val(x) ((x).pte)
#define iopte_val(x) ((x).iopte)
#define pmd_val(x) ((x).pmd)
#define pgd_val(x) ((x).pgd)
-#define ctxd_val(x) ((x).ctxd)
#define pgprot_val(x) ((x).pgprot)
-#define iopgprot_val(x) ((x).iopgprot)
#define __pte(x) ((pte_t) { (x) } )
#define __iopte(x) ((iopte_t) { (x) } )
#define __pmd(x) ((pmd_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
-#define __ctxd(x) ((ctxd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
-#define __iopgprot(x) ((iopgprot_t) { (x) } )
#else
/* .. while these make it easier on the compiler */
typedef unsigned long iopte_t;
typedef unsigned int pmd_t;
typedef unsigned int pgd_t;
-typedef unsigned long ctxd_t;
typedef unsigned long pgprot_t;
-typedef unsigned long iopgprot_t;
#define pte_val(x) (x)
#define iopte_val(x) (x)
#define pmd_val(x) (x)
#define pgd_val(x) (x)
-#define ctxd_val(x) (x)
#define pgprot_val(x) (x)
-#define iopgprot_val(x) (x)
#define __pte(x) (x)
#define __iopte(x) (x)
#define __pmd(x) (x)
#define __pgd(x) (x)
-#define __ctxd(x) (x)
#define __pgprot(x) (x)
-#define __iopgprot(x) (x)
#endif /* (STRICT_MM_TYPECHECKS) */
-#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
-#define HPAGE_SHIFT 22
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
-#define HPAGE_SHIFT 19
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-#define HPAGE_SHIFT 16
-#endif
-
-#ifdef CONFIG_HUGETLB_PAGE
-#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
-#define HPAGE_MASK (~(HPAGE_SIZE - 1UL))
-#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-#endif
-
#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \
- (_AC(0x0000000070000000,UL)) : (PAGE_OFFSET))
+ (_AC(0x0000000070000000,UL)) : \
+ (_AC(0xfffff80000000000,UL) + (1UL << 32UL)))
+
+#include <asm-generic/memory_model.h>
#endif /* !(__ASSEMBLY__) */
*/
#define PAGE_OFFSET _AC(0xFFFFF80000000000,UL)
+#ifndef __ASSEMBLY__
+
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
-/* PFNs are real physical page numbers. However, mem_map only begins to record
- * per-page information starting at pfn_base. This is to handle systems where
- * the first physical page in the machine is at some huge physical address, such
- * as 4GB. This is common on a partitioned E10000, for example.
- */
+#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
-#define pfn_to_page(pfn) (mem_map + ((pfn)-(pfn_base)))
-#define page_to_pfn(page) ((unsigned long)(((page) - mem_map) + pfn_base))
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)
-#define pfn_valid(pfn) (((pfn)-(pfn_base)) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define virt_to_phys __pa
#define phys_to_virt __va
-#ifndef __ASSEMBLY__
-
-/* The following structure is used to hold the physical
- * memory configuration of the machine. This is filled in
- * probe_memory() and is later used by mem_init() to set up
- * mem_map[]. We statically allocate SPARC_PHYS_BANKS of
- * these structs, this is arbitrary. The entry after the
- * last valid one has num_bytes==0.
- */
-
-struct sparc_phys_banks {
- unsigned long base_addr;
- unsigned long num_bytes;
-};
-
-#define SPARC_PHYS_BANKS 32
-
-extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
-
-/* Pure 2^n version of get_order */
-static __inline__ int get_order(unsigned long size)
-{
- int order;
-
- size = (size-1) >> (PAGE_SHIFT-1);
- order = -1;
- do {
- size >>= 1;
- order++;
- } while (size);
- return order;
-}
-
#endif /* !(__ASSEMBLY__) */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-#endif /* !(__KERNEL__) */
+#define devmem_is_allowed(x) 1
+
+#include <asm-generic/page.h>
-#endif /* !(_SPARC64_PAGE_H) */
+#endif /* __KERNEL__ */
+#endif /* _SPARC64_PAGE_H */
git://git.onelab.eu / linux-2.6.git / blobdiff