linux-kernel - [PATCH] IB/ehca: Forward event client-reregister-required to registered clients

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Message-Id: <200712201506.34253.hnguyen@linux.vnet.ibm.com>
Date:	Thu, 20 Dec 2007 15:06:33 +0100
From:	Hoang-Nam Nguyen <hnguyen@...ux.vnet.ibm.com>
To:	Roland Dreier <rdreier@...co.com>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, general@...ts.openfabrics.org
Cc:	Christoph Raisch <RAISCH@...ibm.com>, stefan.roscher@...ibm.com,
	fenkes@...ibm.com
Subject: [PATCH] IB/ehca: Forward event client-reregister-required to registered clients

This patch allows ehca to forward event client-reregister-required to
registered clients. Such one event is generated by the switch eg. after
its reboot.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@...ibm.com>
---
 drivers/infiniband/hw/ehca/ehca_irq.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 3f617b2..4c734ec 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -62,6 +62,7 @@
 #define NEQE_PORT_NUMBER       EHCA_BMASK_IBM( 8, 15)
 #define NEQE_PORT_AVAILABILITY EHCA_BMASK_IBM(16, 16)
 #define NEQE_DISRUPTIVE        EHCA_BMASK_IBM(16, 16)
+#define NEQE_SPECIFIC_EVENT    EHCA_BMASK_IBM(16, 23)
 
 #define ERROR_DATA_LENGTH      EHCA_BMASK_IBM(52, 63)
 #define ERROR_DATA_TYPE        EHCA_BMASK_IBM( 0,  7)
@@ -354,6 +355,7 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
 {
 	u8 ec   = EHCA_BMASK_GET(NEQE_EVENT_CODE, eqe);
 	u8 port = EHCA_BMASK_GET(NEQE_PORT_NUMBER, eqe);
+	u8 spec_event;
 
 	switch (ec) {
 	case 0x30: /* port availability change */
@@ -394,6 +396,16 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
 	case 0x33:  /* trace stopped */
 		ehca_err(&shca->ib_device, "Traced stopped.");
 		break;
+	case 0x34: /* util async event */
+		spec_event = EHCA_BMASK_GET(NEQE_SPECIFIC_EVENT, eqe);
+		if (spec_event == 0x80) /* client reregister required */
+			dispatch_port_event(shca, port,
+					    IB_EVENT_CLIENT_REREGISTER,
+					    "client reregister req.");
+		else
+			ehca_warn(&shca->ib_device, "Unknown util async "
+				  "event %x on port %x", spec_event, port);
+		break;
 	default:
 		ehca_err(&shca->ib_device, "Unknown event code: %x on %s.",
 			 ec, shca->ib_device.name);
-- 
1.5.2


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