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!

1 files changed, 208 insertions, 0 deletions

diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h
new file mode 100644
index 000000000000..614e2a93c703
--- /dev/null
+++ b/include/asm-s390/page.h
@@ -0,0 +1,208 @@
+/*
+ *  include/asm-s390/page.h
+ *
+ *  S390 version
+ *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Hartmut Penner (hp@de.ibm.com)
+ */
+
+#ifndef _S390_PAGE_H
+#define _S390_PAGE_H
+
+#include <asm/setup.h>
+#include <asm/types.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT      12
+#define PAGE_SIZE       (1UL << PAGE_SHIFT)
+#define PAGE_MASK       (~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+#ifndef __s390x__
+
+static inline void clear_page(void *page)
+{
+	register_pair rp;
+
+	rp.subreg.even = (unsigned long) page;
+	rp.subreg.odd = (unsigned long) 4096;
+        asm volatile ("   slr  1,1\n"
+		      "   mvcl %0,0"
+		      : "+&a" (rp) : : "memory", "cc", "1" );
+}
+
+static inline void copy_page(void *to, void *from)
+{
+        if (MACHINE_HAS_MVPG)
+		asm volatile ("   sr   0,0\n"
+			      "   mvpg %0,%1"
+			      : : "a" ((void *)(to)), "a" ((void *)(from))
+			      : "memory", "cc", "0" );
+	else
+		asm volatile ("   mvc  0(256,%0),0(%1)\n"
+			      "   mvc  256(256,%0),256(%1)\n"
+			      "   mvc  512(256,%0),512(%1)\n"
+			      "   mvc  768(256,%0),768(%1)\n"
+			      "   mvc  1024(256,%0),1024(%1)\n"
+			      "   mvc  1280(256,%0),1280(%1)\n"
+			      "   mvc  1536(256,%0),1536(%1)\n"
+			      "   mvc  1792(256,%0),1792(%1)\n"
+			      "   mvc  2048(256,%0),2048(%1)\n"
+			      "   mvc  2304(256,%0),2304(%1)\n"
+			      "   mvc  2560(256,%0),2560(%1)\n"
+			      "   mvc  2816(256,%0),2816(%1)\n"
+			      "   mvc  3072(256,%0),3072(%1)\n"
+			      "   mvc  3328(256,%0),3328(%1)\n"
+			      "   mvc  3584(256,%0),3584(%1)\n"
+			      "   mvc  3840(256,%0),3840(%1)\n"
+			      : : "a"((void *)(to)),"a"((void *)(from)) 
+			      : "memory" );
+}
+
+#else /* __s390x__ */
+
+static inline void clear_page(void *page)
+{
+        asm volatile ("   lgr  2,%0\n"
+                      "   lghi 3,4096\n"
+                      "   slgr 1,1\n"
+                      "   mvcl 2,0"
+                      : : "a" ((void *) (page))
+		      : "memory", "cc", "1", "2", "3" );
+}
+
+static inline void copy_page(void *to, void *from)
+{
+        if (MACHINE_HAS_MVPG)
+		asm volatile ("   sgr  0,0\n"
+			      "   mvpg %0,%1"
+			      : : "a" ((void *)(to)), "a" ((void *)(from))
+			      : "memory", "cc", "0" );
+	else
+		asm volatile ("   mvc  0(256,%0),0(%1)\n"
+			      "   mvc  256(256,%0),256(%1)\n"
+			      "   mvc  512(256,%0),512(%1)\n"
+			      "   mvc  768(256,%0),768(%1)\n"
+			      "   mvc  1024(256,%0),1024(%1)\n"
+			      "   mvc  1280(256,%0),1280(%1)\n"
+			      "   mvc  1536(256,%0),1536(%1)\n"
+			      "   mvc  1792(256,%0),1792(%1)\n"
+			      "   mvc  2048(256,%0),2048(%1)\n"
+			      "   mvc  2304(256,%0),2304(%1)\n"
+			      "   mvc  2560(256,%0),2560(%1)\n"
+			      "   mvc  2816(256,%0),2816(%1)\n"
+			      "   mvc  3072(256,%0),3072(%1)\n"
+			      "   mvc  3328(256,%0),3328(%1)\n"
+			      "   mvc  3584(256,%0),3584(%1)\n"
+			      "   mvc  3840(256,%0),3840(%1)\n"
+			      : : "a"((void *)(to)),"a"((void *)(from)) 
+			      : "memory" );
+}
+
+#endif /* __s390x__ */
+
+#define clear_user_page(page, vaddr, pg)	clear_page(page)
+#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
+
+#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+
+/* Pure 2^n version of get_order */
+extern __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;
+}
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct { unsigned long pte; } pte_t;
+
+#define pte_val(x)      ((x).pte)
+#define pgprot_val(x)   ((x).pgprot)
+
+#ifndef __s390x__
+
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct {
+        unsigned long pgd0;
+        unsigned long pgd1;
+        unsigned long pgd2;
+        unsigned long pgd3;
+        } pgd_t;
+
+#define pmd_val(x)      ((x).pmd)
+#define pgd_val(x)      ((x).pgd0)
+
+#else /* __s390x__ */
+
+typedef struct { 
+        unsigned long pmd0;
+        unsigned long pmd1; 
+        } pmd_t;
+typedef struct { unsigned long pgd; } pgd_t;
+
+#define pmd_val(x)      ((x).pmd0)
+#define pmd_val1(x)     ((x).pmd1)
+#define pgd_val(x)      ((x).pgd)
+
+#endif /* __s390x__ */
+
+#define __pte(x)        ((pte_t) { (x) } )
+#define __pmd(x)        ((pmd_t) { (x) } )
+#define __pgd(x)        ((pgd_t) { (x) } )
+#define __pgprot(x)     ((pgprot_t) { (x) } )
+
+/* default storage key used for all pages */
+extern unsigned int default_storage_key;
+
+static inline void
+page_set_storage_key(unsigned long addr, unsigned int skey)
+{
+	asm volatile ( "sske %0,%1" : : "d" (skey), "a" (addr) );
+}
+
+static inline unsigned int
+page_get_storage_key(unsigned long addr)
+{
+	unsigned int skey;
+
+	asm volatile ( "iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0) );
+
+	return skey;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+#define __PAGE_OFFSET           0x0UL
+#define PAGE_OFFSET             0x0UL
+#define __pa(x)                 (unsigned long)(x)
+#define __va(x)                 (void *)(unsigned long)(x)
+#define pfn_to_page(pfn)	(mem_map + (pfn))
+#define page_to_pfn(page)	((unsigned long)((page) - mem_map))
+#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+
+#define pfn_valid(pfn)		((pfn) < max_mapnr)
+#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+
+#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
+				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#endif /* __KERNEL__ */
+
+#endif /* _S390_PAGE_H */