* private definitions which should NOT be used outside memory.h
* files. Use virt_to_phys/phys_to_virt/__pa/__va instead.
*/
+#ifndef __virt_to_phys
#define __virt_to_phys(x) ((x) - PAGE_OFFSET + PHYS_OFFSET)
#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET)
+#endif
/*
* Convert a physical address to a Page Frame Number and back
#define __phys_to_pfn(paddr) ((paddr) >> PAGE_SHIFT)
#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
+/*
+ * Convert a page to/from a physical address
+ */
+#define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page)))
+#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
+
#ifndef __ASSEMBLY__
/*
#ifndef __virt_to_bus
#define __virt_to_bus __virt_to_phys
#define __bus_to_virt __phys_to_virt
-#define __pfn_to_bus(x) ((x) << PAGE_SHIFT)
+#define __pfn_to_bus(x) __pfn_to_phys(x)
+#define __bus_to_pfn(x) __phys_to_pfn(x)
#endif
static inline __deprecated unsigned long virt_to_bus(void *x)
#endif /* !CONFIG_DISCONTIGMEM */
-/*
- * For BIO. "will die". Kill me when bio_to_phys() and bvec_to_phys() die.
- */
-#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
-
/*
* Optional coherency support. Currently used only by selected
* Intel XSC3-based systems.