Changeset bae9e76 in mainline for uspace/drv/uhci/uhci_struct/link_pointer.h

Timestamp:

2011-01-25T18:09:20Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial

Children:

d5f7a8ab

Parents:

643b983

Message:

Use uint32_t and cpp flags intead of bit structure for link_pointer_t

File:

• uspace/drv/uhci/uhci_struct/link_pointer.h (modified) (1 diff)

uspace/drv/uhci/uhci_struct/link_pointer.h

@@ -36 +36 @@
 
 /* UHCI link pointer, used by many data structures */
-typedef struct link_pointer {
-        uint32_t addr:28;
-        uint8_t zero:1;
-        uint8_t reserved:1;
-        uint8_t qh:1;
-        uint8_t terminate:1;
-} __attribute__((packed)) link_pointer_t;
+typedef uint32_t link_pointer_t;
+
+#define LINK_POINTER_TERMINATE_FLAG (1 << 0);
+#define LINK_POINTER_QUEUE_HEAD_FLAG (1 << 1);
+#define LINK_POINTER_ZERO_BIT_FLAG (1 << 2);
+#define LINK_POINTER_RESERVED_FLAG (1 << 3);
+
+#define LINK_POINTER_ADDRESS_MASK 0xfffffff0 /* upper 28 bits */
 
 #endif