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authorTony Luck <tony.luck@intel.com>2006-06-21 14:50:10 -0700
committerTony Luck <tony.luck@intel.com>2006-06-21 14:50:10 -0700
commit1323523f505606cfd24af6122369afddefc3b09d (patch)
treea3238a27220dd91ec0918478683e59e48605865f /include/asm-ia64
parent9ba89334552b96e2127dcafb1c46ce255ecf2667 (diff)
parent32e62c636a728cb39c0b3bd191286f2ca65d4028 (diff)
Pull rework-memory-attribute-aliasing into release branch
Diffstat (limited to 'include/asm-ia64')
-rw-r--r--include/asm-ia64/io.h1
-rw-r--r--include/asm-ia64/pgtable.h22
2 files changed, 11 insertions, 12 deletions
diff --git a/include/asm-ia64/io.h b/include/asm-ia64/io.h
index c2e3742108b..781ee2c7e8c 100644
--- a/include/asm-ia64/io.h
+++ b/include/asm-ia64/io.h
@@ -88,6 +88,7 @@ phys_to_virt (unsigned long address)
}
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
+extern u64 kern_mem_attribute (unsigned long phys_addr, unsigned long size);
extern int valid_phys_addr_range (unsigned long addr, size_t count); /* efi.c */
extern int valid_mmap_phys_addr_range (unsigned long addr, size_t count);
diff --git a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h
index eaac08d5e0b..228981cadf8 100644
--- a/include/asm-ia64/pgtable.h
+++ b/include/asm-ia64/pgtable.h
@@ -316,22 +316,20 @@ ia64_phys_addr_valid (unsigned long addr)
#define pte_mkhuge(pte) (__pte(pte_val(pte)))
/*
- * 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.
+ * 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.
*/
+#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)
-
-/*
- * 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)
+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
+
static inline unsigned long
pgd_index (unsigned long address)
{