linux-kernel - [PATCH 1/2] IB/ehca: Return physical link information in query

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Date:	Fri, 2 Nov 2007 15:33:51 +0200
From:	Joachim Fenkes <fenkes@...ibm.com>
To:	"LinuxPPC-Dev" <linuxppc-dev@...abs.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"OF-General" <general@...ts.openfabrics.org>,
	Roland Dreier <rolandd@...co.com>,
	"OF-EWG" <ewg@...ts.openfabrics.org>
Cc:	"Hoang-Nam Nguyen" <hnguyen@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	Stefan Roscher <stefan.roscher@...ibm.com>
Subject: [PATCH 1/2] IB/ehca: Return physical link information in query_port()

Newer firmware versions return physical port information to the partition,
so hand that information to the consumer if it's present.

Signed-off-by: Joachim Fenkes <fenkes@...ibm.com>
---
 drivers/infiniband/hw/ehca/ehca_hca.c |   20 ++++++++++++++------
 drivers/infiniband/hw/ehca/hipz_hw.h  |    6 +++++-
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
index 15806d1..5bd7b59 100644
--- a/drivers/infiniband/hw/ehca/ehca_hca.c
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -151,7 +151,6 @@ int ehca_query_port(struct ib_device *ibdev,
 	}
 
 	memset(props, 0, sizeof(struct ib_port_attr));
-	props->state = rblock->state;
 
 	switch (rblock->max_mtu) {
 	case 0x1:
@@ -188,11 +187,20 @@ int ehca_query_port(struct ib_device *ibdev,
 	props->subnet_timeout  = rblock->subnet_timeout;
 	props->init_type_reply = rblock->init_type_reply;
 
-	props->active_width    = IB_WIDTH_12X;
-	props->active_speed    = 0x1;
-
-	/* at the moment (logical) link state is always LINK_UP */
-	props->phys_state      = 0x5;
+	if (rblock->state && rblock->phys_width) {
+		props->phys_state      = rblock->phys_pstate;
+		props->state           = rblock->phys_state;
+		props->active_width    = rblock->phys_width;
+		props->active_speed    = rblock->phys_speed;
+	} else {
+		/* old firmware releases don't report physical
+		 * port info, so use default values
+		 */
+		props->phys_state      = 5;
+		props->state           = rblock->state;
+		props->active_width    = IB_WIDTH_12X;
+		props->active_speed    = 0x1;
+	}
 
 query_port1:
 	ehca_free_fw_ctrlblock(rblock);
diff --git a/drivers/infiniband/hw/ehca/hipz_hw.h b/drivers/infiniband/hw/ehca/hipz_hw.h
index d9739e5..485b840 100644
--- a/drivers/infiniband/hw/ehca/hipz_hw.h
+++ b/drivers/infiniband/hw/ehca/hipz_hw.h
@@ -402,7 +402,11 @@ struct hipz_query_port {
 	u64 max_msg_sz;
 	u32 max_mtu;
 	u32 vl_cap;
-	u8  reserved2[1900];
+	u32 phys_pstate;
+	u32 phys_state;
+	u32 phys_speed;
+	u32 phys_width;
+	u8  reserved2[1884];
 	u64 guid_entries[255];
 } __attribute__ ((packed));
 
-- 
1.5.2


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