Changes in kernel/arch/ppc32/src/mm/page.c [1c01e6c:1cab9972] in mainline

File:

• kernel/arch/ppc32/src/mm/page.c (modified) (1 diff)

kernel/arch/ppc32/src/mm/page.c

@@ -46 +46 @@
 }
 
+uintptr_t hw_map(uintptr_t physaddr, size_t size)
+{
+        if (last_frame + ALIGN_UP(size, PAGE_SIZE) >
+            KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
+                panic("Unable to map physical memory %p (%zu bytes).",
+                    (void *) physaddr, size);
+        
+        uintptr_t virtaddr = PA2KA(last_frame);
+        pfn_t i;
+        page_table_lock(AS_KERNEL, true);
+        for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
+                page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i),
+                    physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE);
+        page_table_unlock(AS_KERNEL, true);
+        
+        last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
+        
+        return virtaddr;
+}
+
 /** @}
  */