s390/qdio: Cleanup error handling to drivers
Various improvements of qdio error reporting to the
upper-layer drivers (qeth, zfcp):
- Split QDIO_ERROR_ACTIVATE_CHECK_CONDITION into:
QDIO_ERROR_ACTIVATE: qdio termination interrupt
QDIO_ERROR_GET_BUF_STATE: QIOASSIST eqbs error
QDIO_ERROR_SET_BUF_STATE: QIOASSIST sqbs error
Add QDIO_ERROR_FATAL / QDIO_ERROR_TEMPORARY masks
to ease recovery decision in upper-layer drivers.
- Don't (ab-)use qdio handler errors as return codes
for do_QDIO but use standard error codes:
-ENOBUFS: temporary target CC=2 condition
-EBUSY: unresolved SIGA-W CC=2 busy condition
-EIO: I/O error (CC=1, CC=3)
- Remove unneeded memory clobber from SIGA-R
- Remove EX_TABLE entry on SIGA-W, we want to see these errors
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 74528e2..f039d86 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -325,11 +325,13 @@
int, int, unsigned long);
/* qdio errors reported to the upper-layer program */
-#define QDIO_ERROR_SIGA_TARGET 0x02
-#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10
-#define QDIO_ERROR_SIGA_BUSY 0x20
-#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40
-#define QDIO_ERROR_SLSB_STATE 0x80
+#define QDIO_ERROR_ACTIVATE 0x0001
+#define QDIO_ERROR_GET_BUF_STATE 0x0002
+#define QDIO_ERROR_SET_BUF_STATE 0x0004
+#define QDIO_ERROR_SLSB_STATE 0x0100
+
+#define QDIO_ERROR_FATAL 0x00ff
+#define QDIO_ERROR_TEMPORARY 0xff00
/* for qdio_cleanup */
#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01