[S390] qdio: new qdio driver.

List of major changes:
- split qdio driver into several files
- seperation of thin interrupt code
- improved handling for multiple thin interrupt devices
- inbound and outbound processing now always runs in tasklet context
- significant less tasklet schedules per interrupt needed
- merged qebsm with non-qebsm handling
- cleanup qdio interface and added kerneldoc
- coding style

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

1 files changed, 11 insertions, 15 deletions

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index f682f7b14480..3fbc3bdec0c5 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -726,8 +726,7 @@ tx_drop:
 }
 
 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
-			unsigned int status, unsigned int qdio_err,
-			unsigned int siga_err, unsigned int queue,
+			unsigned int qdio_err, unsigned int queue,
 			int first_element, int count, unsigned long card_ptr)
 {
 	struct net_device *net_dev;
@@ -742,23 +741,20 @@ static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
 		card->perf_stats.inbound_cnt++;
 		card->perf_stats.inbound_start_time = qeth_get_micros();
 	}
-	if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
-		if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
-			QETH_DBF_TEXT(TRACE, 1, "qdinchk");
-			QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
-			QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
-					count);
-			QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
-			qeth_schedule_recovery(card);
-			return;
-		}
+	if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
+		QETH_DBF_TEXT(TRACE, 1, "qdinchk");
+		QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
+		QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
+				count);
+		QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
+		qeth_schedule_recovery(card);
+		return;
 	}
 	for (i = first_element; i < (first_element + count); ++i) {
 		index = i % QDIO_MAX_BUFFERS_PER_Q;
 		buffer = &card->qdio.in_q->bufs[index];
-		if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
-		      qeth_check_qdio_errors(buffer->buffer,
-					     qdio_err, siga_err, "qinerr")))
+		if (!(qdio_err &&
+		      qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
 			qeth_l2_process_inbound_buffer(card, buffer, index);
 		/* clear buffer and give back to hardware */
 		qeth_put_buffer_pool_entry(card, buffer->pool_entry);