hwaddr cda;
} CcwDataStream;
+/*
+ * IO instructions conclude according to this. Currently we have only
+ * cc codes. Valid values are 0, 1, 2, 3 and the generic semantic for
+ * IO instructions is described briefly. For more details consult the PoP.
+ */
+typedef enum IOInstEnding {
+ /* produced expected result */
+ IOINST_CC_EXPECTED = 0,
+ /* status conditions were present or produced alternate result */
+ IOINST_CC_STATUS_PRESENT = 1,
+ /* inst. ineffective because busy with previously initiated function */
+ IOINST_CC_BUSY = 2,
+ /* inst. ineffective because not operational */
+ IOINST_CC_NOT_OPERATIONAL = 3
+} IOInstEnding;
+
typedef struct SubchDev SubchDev;
struct SubchDev {
/* channel-subsystem related things: */