Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-m68k/page.h b/include/asm-m68k/page.h
new file mode 100644
index 0000000..99a5167
--- /dev/null
+++ b/include/asm-m68k/page.h
@@ -0,0 +1,195 @@
+#ifndef _M68K_PAGE_H
+#define _M68K_PAGE_H
+
+#include <linux/config.h>
+
+/* PAGE_SHIFT determines the page size */
+#ifndef CONFIG_SUN3
+#define PAGE_SHIFT (12)
+#else
+#define PAGE_SHIFT (13)
+#endif
+#ifdef __ASSEMBLY__
+#define PAGE_SIZE (1 << PAGE_SHIFT)
+#else
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#endif
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#include <asm/setup.h>
+
+#if PAGE_SHIFT < 13
+#define THREAD_SIZE (8192)
+#else
+#define THREAD_SIZE PAGE_SIZE
+#endif
+
+#ifndef __ASSEMBLY__
+
+#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
+#define free_user_page(page, addr) free_page(addr)
+
+/*
+ * We don't need to check for alignment etc.
+ */
+#ifdef CPU_M68040_OR_M68060_ONLY
+static inline void copy_page(void *to, void *from)
+{
+ unsigned long tmp;
+
+ __asm__ __volatile__("1:\t"
+ ".chip 68040\n\t"
+ "move16 %1@+,%0@+\n\t"
+ "move16 %1@+,%0@+\n\t"
+ ".chip 68k\n\t"
+ "dbra %2,1b\n\t"
+ : "=a" (to), "=a" (from), "=d" (tmp)
+ : "0" (to), "1" (from) , "2" (PAGE_SIZE / 32 - 1)
+ );
+}
+
+static inline void clear_page(void *page)
+{
+ unsigned long tmp;
+ unsigned long *sp = page;
+
+ *sp++ = 0;
+ *sp++ = 0;
+ *sp++ = 0;
+ *sp++ = 0;
+
+ __asm__ __volatile__("1:\t"
+ ".chip 68040\n\t"
+ "move16 %2@+,%0@+\n\t"
+ ".chip 68k\n\t"
+ "subqw #8,%2\n\t"
+ "subqw #8,%2\n\t"
+ "dbra %1,1b\n\t"
+ : "=a" (sp), "=d" (tmp)
+ : "a" (page), "0" (sp),
+ "1" ((PAGE_SIZE - 16) / 16 - 1));
+}
+
+#else
+#define clear_page(page) memset((page), 0, PAGE_SIZE)
+#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
+#endif
+
+#define clear_user_page(addr, vaddr, page) \
+ do { clear_page(addr); \
+ flush_dcache_page(page); \
+ } while (0)
+#define copy_user_page(to, from, vaddr, page) \
+ do { copy_page(to, from); \
+ flush_dcache_page(page); \
+ } while (0)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long pmd[16]; } pmd_t;
+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[0])
+#define pgd_val(x) ((x).pgd)
+#define pgprot_val(x) ((x).pgprot)
+
+#define __pte(x) ((pte_t) { (x) } )
+#define __pmd(x) ((pmd_t) { (x) } )
+#define __pgd(x) ((pgd_t) { (x) } )
+#define __pgprot(x) ((pgprot_t) { (x) } )
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+/* 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__ */
+
+#include <asm/page_offset.h>
+
+#define PAGE_OFFSET (PAGE_OFFSET_RAW)
+
+#ifndef __ASSEMBLY__
+
+#ifndef CONFIG_SUN3
+
+#define WANT_PAGE_VIRTUAL
+#ifdef CONFIG_SINGLE_MEMORY_CHUNK
+extern unsigned long m68k_memoffset;
+
+#define __pa(vaddr) ((unsigned long)(vaddr)+m68k_memoffset)
+#define __va(paddr) ((void *)((unsigned long)(paddr)-m68k_memoffset))
+#else
+#define __pa(vaddr) virt_to_phys((void *)vaddr)
+#define __va(paddr) phys_to_virt((unsigned long)paddr)
+#endif
+
+#else /* !CONFIG_SUN3 */
+/* This #define is a horrible hack to suppress lots of warnings. --m */
+#define __pa(x) ___pa((unsigned long)x)
+static inline unsigned long ___pa(unsigned long x)
+{
+ if(x == 0)
+ return 0;
+ if(x >= PAGE_OFFSET)
+ return (x-PAGE_OFFSET);
+ else
+ return (x+0x2000000);
+}
+
+static inline void *__va(unsigned long x)
+{
+ if(x == 0)
+ return (void *)0;
+
+ if(x < 0x2000000)
+ return (void *)(x+PAGE_OFFSET);
+ else
+ return (void *)(x-0x2000000);
+}
+#endif /* CONFIG_SUN3 */
+
+/*
+ * NOTE: virtual isn't really correct, actually it should be the offset into the
+ * memory node, but we have no highmem, so that works for now.
+ * TODO: implement (fast) pfn<->pgdat_idx conversion functions, this makes lots
+ * of the shifts unnecessary.
+ */
+#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
+
+#define virt_to_page(kaddr) (mem_map + (((unsigned long)(kaddr)-PAGE_OFFSET) >> PAGE_SHIFT))
+#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
+
+#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
+#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
+
+#define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory)
+#define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn))
+
+#endif /* __ASSEMBLY__ */
+
+#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
+ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#endif /* __KERNEL__ */
+
+#endif /* _M68K_PAGE_H */