X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fpgtable.h;h=c0f8144f23497ae0f95804148f19206b170393c8;hb=9464c7cf61b9433057924c36e6e02f303a00e768;hp=228981cadf8fbc23ae0fd49a6e2d6c17b2e8b1b3;hpb=41689045f6a3cbe0550e1d34e9cc20d2e8c432ba;p=linux-2.6.git

diff --git a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h
index 228981cad..c0f8144f2 100644
--- a/include/asm-ia64/pgtable.h
+++ b/include/asm-ia64/pgtable.h
@@ -12,6 +12,7 @@
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
+#include <linux/config.h>
 
 #include <asm/mman.h>
 #include <asm/page.h>
@@ -316,19 +317,21 @@ ia64_phys_addr_valid (unsigned long addr)
 #define pte_mkhuge(pte)		(__pte(pte_val(pte)))
 
 /*
- * Make page protection values cacheable, uncacheable, or write-
- * combining.  Note that "protection" is really a misnomer here as the
- * protection value contains the memory attribute bits, dirty bits, and
- * various other bits as well.
+ * Macro to a page protection value as "uncacheable".  Note that "protection" is really a
+ * misnomer here as the protection value contains the memory attribute bits, dirty bits,
+ * and various other bits as well.
  */
-#define pgprot_cacheable(prot)		__pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_WB)
 #define pgprot_noncached(prot)		__pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_UC)
-#define pgprot_writecombine(prot)	__pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_WC)
 
-struct file;
-extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
-				     unsigned long size, pgprot_t vma_prot);
-#define __HAVE_PHYS_MEM_ACCESS_PROT
+/*
+ * Macro to make mark a page protection value as "write-combining".
+ * Note that "protection" is really a misnomer here as the protection
+ * value contains the memory attribute bits, dirty bits, and various
+ * other bits as well.  Accesses through a write-combining translation
+ * works bypasses the caches, but does allow for consecutive writes to
+ * be combined into single (but larger) write transactions.
+ */
+#define pgprot_writecombine(prot)	__pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_WC)
 
 static inline unsigned long
 pgd_index (unsigned long address)