[AVR32] Wire up USBA device

[powerpc.git] / include / asm-mips / page.h

diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index 2f9e1a9..e3301e5 100644 (file)
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -37,6 +37,13 @@
 #include <linux/pfn.h>
 #include <asm/io.h>
 
+/*
+ * It's normally defined only for FLATMEM config but it's
+ * used in our early mem init code for all memory models.
+ * So always define it.
+ */
+#define ARCH_PFN_OFFSET                PFN_UP(PHYS_OFFSET)
+
 extern void clear_page(void * page);
 extern void copy_page(void * to, void * from);
 
@@ -132,20 +139,27 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 /* to align the pointer to the (next) page boundary */
 #define PAGE_ALIGN(addr)       (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
 
-#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-#define __pa_page_offset(x)    ((unsigned long)(x) < CKSEG0 ? PAGE_OFFSET : CKSEG0)
+/*
+ * __pa()/__va() should be used only during mem init.
+ */
+#ifdef CONFIG_64BIT
+#define __pa(x)                                                                \
+({                                                                     \
+    unsigned long __x = (unsigned long)(x);                            \
+    __x < CKSEG0 ? XPHYSADDR(__x) : CPHYSADDR(__x);                    \
+})
 #else
-#define __pa_page_offset(x)    PAGE_OFFSET
+#define __pa(x)                                                                \
+    ((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET)
 #endif
-#define __pa(x)                        ((unsigned long)(x) - __pa_page_offset(x))
-#define __pa_symbol(x)         __pa(RELOC_HIDE((unsigned long)(x),0))
-#define __va(x)                        ((void *)((unsigned long)(x) + PAGE_OFFSET))
+#define __va(x)                ((void *)((unsigned long)(x) + PAGE_OFFSET - PHYS_OFFSET))
+#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x),0))
 
 #define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
 
 #ifdef CONFIG_FLATMEM
 
-#define pfn_valid(pfn)         ((pfn) < max_mapnr)
+#define pfn_valid(pfn)         ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
 
 #elif defined(CONFIG_SPARSEMEM)
 
@@ -173,10 +187,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #define UNCAC_ADDR(addr)       ((addr) - PAGE_OFFSET + UNCAC_BASE)
 #define CAC_ADDR(addr)         ((addr) - UNCAC_BASE + PAGE_OFFSET)
 
-#ifdef CONFIG_LIMITED_DMA
-#define WANT_PAGE_VIRTUAL
-#endif
-
 #include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>