Merge branch 'master' of hera.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6

[linux-2.6] / include / asm-sh / page.h

diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h
index ac4b4677f28c49e7cfbfd97e78c94ab141927a0b..cb3d46c59eabe28e627a41d19d00e471ba13454f 100644 (file)
--- a/include/asm-sh/page.h
+++ b/include/asm-sh/page.h
@@ -59,6 +59,8 @@ extern void (*clear_page)(void *to);
 extern void (*copy_page)(void *to, void *from);
 
 extern unsigned long shm_align_mask;
+extern unsigned long max_low_pfn, min_low_pfn;
+extern unsigned long memory_start, memory_end;
 
 #ifdef CONFIG_MMU
 extern void clear_page_slow(void *to);
@@ -68,14 +70,14 @@ extern void clear_page_nommu(void *to);
 extern void copy_page_nommu(void *to, void *from);
 #endif
 
-#if defined(CONFIG_MMU) && (defined(CONFIG_CPU_SH4) || \
-       defined(CONFIG_SH7705_CACHE_32KB))
+#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \
+       (defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB))
 struct page;
 extern void clear_user_page(void *to, unsigned long address, struct page *pg);
 extern void copy_user_page(void *to, void *from, unsigned long address, struct page *pg);
 extern void __clear_user_page(void *to, void *orig_to);
 extern void __copy_user_page(void *to, void *from, void *orig_to);
-#elif defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH3) || !defined(CONFIG_MMU)
+#else
 #define clear_user_page(page, vaddr, pg)       clear_page(page)
 #define copy_user_page(to, from, vaddr, pg)    copy_page(to, from)
 #endif
@@ -86,6 +88,7 @@ extern void __copy_user_page(void *to, void *from, void *orig_to);
 #ifdef CONFIG_X2TLB
 typedef struct { unsigned long pte_low, pte_high; } pte_t;
 typedef struct { unsigned long long pgprot; } pgprot_t;
+typedef struct { unsigned long long pgd; } pgd_t;
 #define pte_val(x) \
        ((x).pte_low | ((unsigned long long)(x).pte_high << 32))
 #define __pte(x) \
@@ -93,12 +96,11 @@ typedef struct { unsigned long long pgprot; } pgprot_t;
 #else
 typedef struct { unsigned long pte_low; } pte_t;
 typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct { unsigned long pgd; } pgd_t;
 #define pte_val(x)     ((x).pte_low)
 #define __pte(x) ((pte_t) { (x) } )
 #endif
 
-typedef struct { unsigned long pgd; } pgd_t;
-
 #define pgd_val(x)     ((x).pgd)
 #define pgprot_val(x)  ((x).pgprot)
 
@@ -124,17 +126,18 @@ typedef struct { unsigned long pgd; } pgd_t;
 #define PAGE_OFFSET            CONFIG_PAGE_OFFSET
 #define __pa(x)                        ((unsigned long)(x)-PAGE_OFFSET)
 #define __va(x)                        ((void *)((unsigned long)(x)+PAGE_OFFSET))
+#define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
 
-#define MAP_NR(addr)           (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
-
-#define phys_to_page(phys)     (mem_map + (((phys)-__MEMORY_START) >> PAGE_SHIFT))
-#define page_to_phys(page)     (((page - mem_map) << PAGE_SHIFT) + __MEMORY_START)
+#define phys_to_page(phys)     (pfn_to_page(phys >> PAGE_SHIFT))
+#define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
 
 /* PFN start number, because of __MEMORY_START */
 #define PFN_START              (__MEMORY_START >> PAGE_SHIFT)
 #define ARCH_PFN_OFFSET                (PFN_START)
 #define virt_to_page(kaddr)    pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_valid(pfn)         (((pfn) - PFN_START) < max_mapnr)
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn)         ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
+#endif
 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
 #define VM_DATA_DEFAULT_FLAGS  (VM_READ | VM_WRITE | VM_EXEC | \
@@ -148,5 +151,12 @@ typedef struct { unsigned long pgd; } pgd_t;
 #define __HAVE_ARCH_GATE_AREA
 #endif
 
+/*
+ * Slub defaults to 8-byte alignment, we're only interested in 4.
+ * Slab defaults to BYTES_PER_WORD, which ends up being the same anyways.
+ */
+#define ARCH_KMALLOC_MINALIGN  4
+#define ARCH_SLAB_MINALIGN     4
+
 #endif /* __KERNEL__ */
 #endif /* __ASM_SH_PAGE_H */