From patchwork Fri Jan 13 07:11:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cao jin X-Patchwork-Id: 9514699 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8CD7E601E5 for ; Fri, 13 Jan 2017 07:11:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 86702285D6 for ; Fri, 13 Jan 2017 07:11:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7B34F28601; Fri, 13 Jan 2017 07:11:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 24193285D6 for ; Fri, 13 Jan 2017 07:11:50 +0000 (UTC) Received: from localhost ([::1]:39495 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cRw1d-0005ME-7p for patchwork-qemu-devel@patchwork.kernel.org; Fri, 13 Jan 2017 02:11:49 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59452) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cRvx3-0008Jz-Du for qemu-devel@nongnu.org; Fri, 13 Jan 2017 02:07:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cRvx2-0001VC-Aq for qemu-devel@nongnu.org; Fri, 13 Jan 2017 02:07:05 -0500 Received: from [59.151.112.132] (port=54421 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cRvx0-0001HH-2n for qemu-devel@nongnu.org; Fri, 13 Jan 2017 02:07:04 -0500 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="14742142" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 13 Jan 2017 15:06:57 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id DE54847AD1F0; Fri, 13 Jan 2017 15:06:55 +0800 (CST) Received: from G08FNSTD140223.g08.fujitsu.local (10.167.226.69) by G08CNEXCHPEKD02.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.319.2; Fri, 13 Jan 2017 15:06:55 +0800 From: Cao jin To: Date: Fri, 13 Jan 2017 15:11:58 +0800 Message-ID: <1484291524-1261-5-git-send-email-caoj.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1484291524-1261-1-git-send-email-caoj.fnst@cn.fujitsu.com> References: <1484291524-1261-1-git-send-email-caoj.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.69] X-yoursite-MailScanner-ID: DE54847AD1F0.AB547 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: caoj.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Subject: [Qemu-devel] [PATCH v8 04/10] megasas: change behaviour of msix switch X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marcel Apfelbaum , Paolo Bonzini , Hannes Reinecke , Markus Armbruster , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Resolve the TODO, msix=auto means msix on; if user specify msix=on, then device creation fail on msix_init failure. Also undo the overwrites of user configuration of msix. CC: Michael S. Tsirkin CC: Hannes Reinecke CC: Paolo Bonzini CC: Markus Armbruster CC: Marcel Apfelbaum Reviewed-by: Markus Armbruster Reviewed-by: Hannes Reinecke Acked-by: Marcel Apfelbaum Signed-off-by: Cao jin --- hw/scsi/megasas.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index a946424ab234..14d6e0c6d565 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -2359,19 +2359,31 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp) memory_region_init_io(&s->mmio_io, OBJECT(s), &megasas_mmio_ops, s, "megasas-mmio", 0x4000); + if (megasas_use_msix(s)) { + ret = msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000, + &s->mmio_io, b->mmio_bar, 0x3800, 0x68, &err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!ret || ret == -ENOTSUP); + if (ret && s->msix == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msix=on request, fail */ + error_append_hint(&err, "You have to use msix=auto (default) or " + "msix=off with this machine type.\n"); + /* No instance_finalize method, need to free the resource here */ + object_unref(OBJECT(&s->mmio_io)); + error_propagate(errp, err); + return; + } + assert(!err || s->msix == ON_OFF_AUTO_AUTO); + /* With msix=auto, we fall back to MSI off silently */ + error_free(err); + } + memory_region_init_io(&s->port_io, OBJECT(s), &megasas_port_ops, s, "megasas-io", 256); memory_region_init_io(&s->queue_io, OBJECT(s), &megasas_queue_ops, s, "megasas-queue", 0x40000); - if (megasas_use_msix(s) && - msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000, - &s->mmio_io, b->mmio_bar, 0x3800, 0x68, &err)) { - /*TODO: check msix_init's error, and should fail on msix=on */ - error_report_err(err); - s->msix = ON_OFF_AUTO_OFF; - } - if (pci_is_express(dev)) { pcie_endpoint_cap_init(dev, 0xa0); }