diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/s390x/css.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index 69b374730e..08ad1a14cf 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -99,6 +99,22 @@ typedef struct CcwDataStream { 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: */ |