From patchwork Wed Oct 2 10:48:47 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Gordeev X-Patchwork-Id: 279921 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 DD9DC2C0528 for ; Thu, 3 Oct 2013 03:11:03 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754528Ab3JBRLA (ORCPT ); Wed, 2 Oct 2013 13:11:00 -0400 Received: from 221-186-24-89.in-addr.arpa ([89.24.186.221]:25803 "EHLO dhcp-26-207.brq.redhat.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754300Ab3JBRK7 (ORCPT ); Wed, 2 Oct 2013 13:10:59 -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 r92Atx6u002550; Wed, 2 Oct 2013 12:55:59 +0200 Received: (from agordeev@localhost) by dhcp-26-207.brq.redhat.com (8.14.5/8.14.5/Submit) id r92AtvuC002544; Wed, 2 Oct 2013 12:55:57 +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 31/77] hpsa: Update MSI/MSI-X interrupts enablement code Date: Wed, 2 Oct 2013 12:48:47 +0200 Message-Id: <2ebbbb417719ad6501bbe59969409c1f5c63ae48.1380703263.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/scsi/hpsa.c | 28 +++++++++++++--------------- 1 files changed, 13 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 393c8db..eb17b3d 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4103,34 +4103,32 @@ static void hpsa_interrupt_mode(struct ctlr_info *h) int err, i; struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES]; - for (i = 0; i < MAX_REPLY_QUEUES; i++) { - hpsa_msix_entries[i].vector = 0; - hpsa_msix_entries[i].entry = i; - } - /* Some boards advertise MSI but don't really support it */ if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) goto default_int_mode; if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { dev_info(&h->pdev->dev, "MSIX\n"); + + err = pci_msix_table_size(h->pdev); + if (err < ARRAY_SIZE(hpsa_msix_entries)) + goto default_int_mode; + + for (i = 0; i < ARRAY_SIZE(hpsa_msix_entries); i++) { + hpsa_msix_entries[i].vector = 0; + hpsa_msix_entries[i].entry = i; + } + err = pci_enable_msix(h->pdev, hpsa_msix_entries, - MAX_REPLY_QUEUES); + ARRAY_SIZE(hpsa_msix_entries)); if (!err) { for (i = 0; i < MAX_REPLY_QUEUES; i++) h->intr[i] = hpsa_msix_entries[i].vector; h->msix_vector = 1; return; } - if (err > 0) { - dev_warn(&h->pdev->dev, "only %d MSI-X vectors " - "available\n", err); - goto default_int_mode; - } else { - dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", - err); - goto default_int_mode; - } + dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err); + goto default_int_mode; } if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { dev_info(&h->pdev->dev, "MSI\n");