From patchwork Wed Oct 2 10:48:31 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Gordeev X-Patchwork-Id: 279826 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id BCFD82C0545 for ; Thu, 3 Oct 2013 02:42:51 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753952Ab3JBQmt (ORCPT ); Wed, 2 Oct 2013 12:42:49 -0400 Received: from 221-186-24-89.in-addr.arpa ([89.24.186.221]:24745 "EHLO dhcp-26-207.brq.redhat.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753434Ab3JBQms (ORCPT ); Wed, 2 Oct 2013 12:42:48 -0400 Received: from dhcp-26-207.brq.redhat.com (localhost [127.0.0.1]) by dhcp-26-207.brq.redhat.com (8.14.5/8.14.5) with ESMTP id r92ArhDE002443; Wed, 2 Oct 2013 12:53:44 +0200 Received: (from agordeev@localhost) by dhcp-26-207.brq.redhat.com (8.14.5/8.14.5/Submit) id r92ArcRa002442; Wed, 2 Oct 2013 12:53:38 +0200 From: Alexander Gordeev To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , Bjorn Helgaas , Ralf Baechle , Michael Ellerman , Benjamin Herrenschmidt , Martin Schwidefsky , Ingo Molnar , Tejun Heo , Dan Williams , Andy King , Jon Mason , Matt Porter , linux-pci@vger.kernel.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux390@de.ibm.com, linux-s390@vger.kernel.org, x86@kernel.org, linux-ide@vger.kernel.org, iss_storagedev@hp.com, linux-nvme@lists.infradead.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, e1000-devel@lists.sourceforge.net, linux-driver@qlogic.com, Solarflare linux maintainers , "VMware, Inc." , linux-scsi@vger.kernel.org Subject: [PATCH RFC 15/77] bnx2: Update MSI/MSI-X interrupts enablement code Date: Wed, 2 Oct 2013 12:48:31 +0200 Message-Id: <69c0bf5f6ee4b2a913891cfc94442a3c9a3f9434.1380703262.git.agordeev@redhat.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org As result of recent re-design of the MSI/MSI-X interrupts enabling pattern this driver has to be updated to use the new technique to obtain a optimal number of MSI/MSI-X interrupts required. Signed-off-by: Alexander Gordeev --- drivers/net/ethernet/broadcom/bnx2.c | 27 ++++++++++++++------------- 1 files changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c index e838a3f..c902627 100644 --- a/drivers/net/ethernet/broadcom/bnx2.c +++ b/drivers/net/ethernet/broadcom/bnx2.c @@ -6202,25 +6202,26 @@ bnx2_enable_msix(struct bnx2 *bp, int msix_vecs) * is setup properly */ BNX2_RD(bp, BNX2_PCI_MSIX_CONTROL); - for (i = 0; i < BNX2_MAX_MSIX_VEC; i++) { - msix_ent[i].entry = i; - msix_ent[i].vector = 0; - } - total_vecs = msix_vecs; #ifdef BCM_CNIC total_vecs++; #endif - rc = -ENOSPC; - while (total_vecs >= BNX2_MIN_MSIX_VEC) { - rc = pci_enable_msix(bp->pdev, msix_ent, total_vecs); - if (rc <= 0) - break; - if (rc > 0) - total_vecs = rc; + rc = pci_msix_table_size(bp->pdev); + if (rc < 0) + return; + + total_vecs = min(total_vecs, rc); + if (total_vecs < BNX2_MIN_MSIX_VEC) + return; + + BUG_ON(total_vecs > ARRAY_SIZE(msix_ent)); + for (i = 0; i < total_vecs; i++) { + msix_ent[i].entry = i; + msix_ent[i].vector = 0; } - if (rc != 0) + rc = pci_enable_msix(bp->pdev, msix_ent, total_vecs); + if (rc) return; msix_vecs = total_vecs;