Store PCI device mapped memory ranges

src/hulk/pci.d

@@ -4,6 +4,7 @@ import hulk.cpu;
 import hulk.klog;
 import hulk.hurl;
 import hulk.hurl.a1;
+import hulk.range;
 
 struct Pci
 {
@@ -35,6 +36,7 @@ struct Pci
         ubyte if_id;
         bool multifunction;
         ubyte header_type;
+        Range[6] memory_ranges;
 
         void initialize(Address address, ushort vendor_id, ushort device_id)
         {
@@ -61,6 +63,7 @@ struct Pci
 
         private void map_memory_regions()
         {
+            size_t range_index;
             uint[2] r;
             uint[2] s;
             for (uint reg_no = 4u; reg_no <= 9u; reg_no++)
@@ -109,10 +112,13 @@ struct Pci
                 {
                     s[1] = 0xFFFF_FFFFu;
                 }
-                ulong addr = (cast(ulong)r[0] & 0xFFFF_FFF0u) | (cast(ulong)r[1] << 32u);
+                ulong mm_region_address = (cast(ulong)r[0] & 0xFFFF_FFF0u) | (cast(ulong)r[1] << 32u);
                 ulong length = ~((cast(ulong)s[0] & 0xFFFF_FFF0u) | (cast(ulong)s[1] << 32u)) + 1u;
                 ulong flags = (r[0] & 0x8) != 0u ? PT_WRITE_THROUGH : 0u;
-                Hurl.identity_map_range(addr, length, flags);
+                Hurl.identity_map_range(mm_region_address, length, flags);
+                memory_ranges[range_index].address = mm_region_address;
+                memory_ranges[range_index].length = length;
+                range_index++;
                 if (is_64bit)
                 {
                     reg_no++;

src/hulk/range.d

@@ -0,0 +1,27 @@
+module hulk.range;
+
+/**
+ * Representation of a memory range.
+ */
+struct Range
+{
+    /** Range base address. */
+    void * _address;
+
+    /** Range length. */
+    size_t length;
+
+    /** Set the range address. */
+    @property void * address(T)(T a)
+    {
+        static assert(T.sizeof == size_t.sizeof);
+        _address = cast(void *)a;
+        return _address;
+    }
+
+    /** Get the range address. */
+    @property void * address()
+    {
+        return _address;
+    }
+}