From: frank.blaschka@de.ibm.com
To: netdev@vger.kernel.org, linux-s390@vger.kernel.org
Cc: Einar Lueck <elelueck@de.ibm.com>, Jan Glauber <jang@linux.vnet.ibm.com>
Subject: [patch 08/11] [PATCH] qdio: support forced signal adapter indications
Date: Wed, 27 Jul 2011 18:12:50 +0200 [thread overview]
Message-ID: <20110727161339.207014816@de.ibm.com> (raw)
In-Reply-To: 20110727161242.018577444@de.ibm.com
[-- Attachment #1: net1117_qdio_siga_r.patch --]
[-- Type: text/plain, Size: 2398 bytes --]
From: Einar Lueck <elelueck@de.ibm.com>
This patch ensures that signal adapter commands are issued if they are
indicated to be required.
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
---
arch/s390/include/asm/qdio.h | 10 ++++++++++
drivers/s390/cio/qdio.h | 9 ---------
drivers/s390/cio/qdio_main.c | 5 +----
3 files changed, 11 insertions(+), 13 deletions(-)
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -279,6 +279,16 @@ struct qdio_outbuf_state {
#define CHSC_AC1_INITIATE_INPUTQ 0x80
+
+/* qdio adapter-characteristics-1 flag */
+#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
+#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
+#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
+#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
+#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
+#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
+#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
+
#define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010
#define CHSC_AC2_DATA_DIV_ENABLED 0x0002
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -85,15 +85,6 @@ enum qdio_irq_states {
#define CHSC_FLAG_QDIO_CAPABILITY 0x80
#define CHSC_FLAG_VALIDITY 0x40
-/* qdio adapter-characteristics-1 flag */
-#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
-#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
-#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
-#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
-#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
-#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
-#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
-
/* SIGA flags */
#define QDIO_SIGA_WRITE 0x00
#define QDIO_SIGA_READ 0x01
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1577,12 +1577,9 @@ set:
used = atomic_add_return(count, &q->nr_buf_used) - count;
BUG_ON(used + count > QDIO_MAX_BUFFERS_PER_Q);
- /* no need to signal as long as the adapter had free buffers */
- if (used)
- return 0;
-
if (need_siga_in(q))
return qdio_siga_input(q);
+
return 0;
}
next prev parent reply other threads:[~2011-07-27 16:13 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-27 16:12 [patch 00/11] [RFC] s390: af_iucv traffic over HiperSockets transport frank.blaschka
2011-07-27 16:12 ` [patch 01/11] [PATCH] iucv: introduce loadable iucv interface frank.blaschka
2011-07-27 23:29 ` David Miller
2011-07-28 4:13 ` Frank Blaschka
2011-07-28 5:10 ` David Miller
2011-07-27 16:12 ` [patch 02/11] [PATCH] iucv: kernel option for z/VM IUCV and HiperSockets frank.blaschka
2011-07-27 16:12 ` [patch 03/11] [PATCH] af_iucv: use loadable iucv interface frank.blaschka
2011-07-27 16:12 ` [patch 04/11] [PATCH] af_iucv: cleanup - use iucv_sk(sk) early frank.blaschka
2011-07-27 16:12 ` [patch 05/11] [PATCH] if_ether: add new Ethernet Protocol ID for af_iucv frank.blaschka
2011-07-27 16:12 ` [patch 06/11] [PATCH] af_iucv: add HiperSockets transport frank.blaschka
2011-07-27 16:12 ` [patch 07/11] [PATCH] qdio: support asynchronous delivery of storage blocks frank.blaschka
2011-07-27 16:12 ` frank.blaschka [this message]
2011-07-27 16:12 ` [patch 09/11] [PATCH] qeth: support forced signal adapter indications frank.blaschka
2011-07-27 16:12 ` [patch 10/11] [PATCH] qeth: exploit asynchronous delivery of storage blocks frank.blaschka
2011-07-27 16:12 ` [patch 11/11] [PATCH] qeth: add support for af_iucv HiperSockets transport frank.blaschka
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