linux-kernel - [PATCH 02/10] IB/ehca: Fix HW level autodetection

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Date:	Thu, 12 Jul 2007 17:47:45 +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>
Cc:	"Hoang-Nam Nguyen" <hnguyen@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	Stefan Roscher <stefan.roscher@...ibm.com>
Subject: [PATCH 02/10] IB/ehca: Fix HW level autodetection

Autodetection was missing a few HW revisions, causing certain eHCA1
revisions to be treated like eHCA2. Fixed.

Signed-off-by: Joachim Fenkes <fenkes@...ibm.com>
---
 drivers/infiniband/hw/ehca/ehca_main.c |   29 +++++++++++++++++------------
 1 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index d9a37dc..57c551e 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -282,22 +282,27 @@ int ehca_sense_attributes(struct ehca_shca *shca)
 
 		ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
 
-		if ((hcaaver == 1) && (revid == 0))
-			shca->hw_level = 0x11;
-		else if ((hcaaver == 1) && (revid == 1))
-			shca->hw_level = 0x12;
-		else if ((hcaaver == 1) && (revid == 2))
-			shca->hw_level = 0x13;
-		else if ((hcaaver == 2) && (revid == 0))
-			shca->hw_level = 0x21;
-		else if ((hcaaver == 2) && (revid == 0x10))
-			shca->hw_level = 0x22;
-		else {
+		if (hcaaver == 1) {
+			if (revid <= 3)
+				shca->hw_level = 0x10 | (revid + 1);
+			else
+				shca->hw_level = 0x14;
+		} else if (hcaaver == 2) {
+			if (revid == 0)
+				shca->hw_level = 0x21;
+			else if (revid == 0x10)
+				shca->hw_level = 0x22;
+			else if (revid == 0x20 || revid == 0x21)
+				shca->hw_level = 0x23;
+		}
+
+		if (!shca->hw_level) {
 			ehca_gen_warn("unknown hardware version"
 				      " - assuming default level");
 			shca->hw_level = 0x22;
 		}
-	}
+	} else
+		shca->hw_level = ehca_hw_level;
 	ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
 
 	shca->sport[0].rate = IB_RATE_30_GBPS;
-- 
1.5.2


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