From patchwork Mon Feb 20 20:43:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcel Apfelbaum X-Patchwork-Id: 730205 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3vRwpz0fX2z9s9Z for ; Tue, 21 Feb 2017 07:54:18 +1100 (AEDT) Received: from localhost ([::1]:41042 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cfuyN-0001je-UH for incoming@patchwork.ozlabs.org; Mon, 20 Feb 2017 15:54:15 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39033) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cfuo1-0001g5-UN for qemu-devel@nongnu.org; Mon, 20 Feb 2017 15:43:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cfuo0-00006W-O5 for qemu-devel@nongnu.org; Mon, 20 Feb 2017 15:43:33 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58784) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cfuo0-00006M-FU for qemu-devel@nongnu.org; Mon, 20 Feb 2017 15:43:32 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8F74B20923C for ; Mon, 20 Feb 2017 20:43:32 +0000 (UTC) Received: from work.redhat.com (ovpn-116-63.ams2.redhat.com [10.36.116.63]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v1KKhGNu027258; Mon, 20 Feb 2017 15:43:30 -0500 From: Marcel Apfelbaum To: qemu-devel@nongnu.org Date: Mon, 20 Feb 2017 22:43:13 +0200 Message-Id: <1487623393-2492-5-git-send-email-marcel@redhat.com> In-Reply-To: <1487623393-2492-1-git-send-email-marcel@redhat.com> References: <1487623393-2492-1-git-send-email-marcel@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 20 Feb 2017 20:43:32 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH V2 4/4] hw/virtio: fix Power Management Control Register for PCI Express virtio devices 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@redhat.com, mst@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Make Power Management State flag writable to conform with the PCI Express spec. Signed-off-by: Marcel Apfelbaum --- hw/virtio/virtio-pci.c | 11 +++++++++++ hw/virtio/virtio-pci.h | 4 ++++ include/hw/compat.h | 4 ++++ include/hw/pci/pcie.h | 2 ++ 4 files changed, 21 insertions(+) diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 1fb0a03..fb86e58 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1812,6 +1812,7 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp) pos = pci_add_capability(pci_dev, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF); assert(pos > 0); + pci_dev->exp.pm_cap = pos; /* * Indicates that this function complies with revision 1.2 of the @@ -1829,6 +1830,12 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp) pcie_cap_lnkctl_init(pci_dev); } + if (proxy->flags & VIRTIO_PCI_FLAG_INIT_PM) { + /* Init Power Management Control Register */ + pci_set_word(pci_dev->wmask + pos + PCI_PM_CTRL, + PCI_PM_CTRL_STATE_MASK); + } + if (proxy->flags & VIRTIO_PCI_FLAG_ATS) { pcie_ats_init(pci_dev, 256); } @@ -1873,6 +1880,8 @@ static void virtio_pci_reset(DeviceState *qdev) if (pci_is_express(dev)) { pcie_cap_deverr_reset(dev); pcie_cap_lnkctl_reset(dev); + + pci_set_word(dev->config + dev->exp.pm_cap + PCI_PM_CTRL, 0); } } @@ -1898,6 +1907,8 @@ static Property virtio_pci_properties[] = { VIRTIO_PCI_FLAG_INIT_DEVERR_BIT, true), DEFINE_PROP_BIT("x-pcie-lnkctl-init", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT, true), + DEFINE_PROP_BIT("x-pcie-pm-init", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_INIT_PM_BIT, true), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h index 9b5dd5a..b095dfc 100644 --- a/hw/virtio/virtio-pci.h +++ b/hw/virtio/virtio-pci.h @@ -75,6 +75,7 @@ enum { VIRTIO_PCI_FLAG_ATS_BIT, VIRTIO_PCI_FLAG_INIT_DEVERR_BIT, VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT, + VIRTIO_PCI_FLAG_INIT_PM_BIT, }; /* Need to activate work-arounds for buggy guests at vmstate load. */ @@ -108,6 +109,9 @@ enum { /* Init Link Control register */ #define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT) +/* Init Power Management */ +#define VIRTIO_PCI_FLAG_INIT_PM (1 << VIRTIO_PCI_FLAG_INIT_PM_BIT) + typedef struct { MSIMessage msg; int virq; diff --git a/include/hw/compat.h b/include/hw/compat.h index 0931aa5..90606f9 100644 --- a/include/hw/compat.h +++ b/include/hw/compat.h @@ -30,6 +30,10 @@ .driver = "virtio-pci",\ .property = "x-pcie-lnkctl-init",\ .value = "off",\ + },{\ + .driver = "virtio-pci",\ + .property = "x-pcie-pm-init",\ + .value = "off",\ }, #define HW_COMPAT_2_7 \ diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 11c6247..3d8f24b 100644 --- a/include/hw/pci/pcie.h +++ b/include/hw/pci/pcie.h @@ -63,6 +63,8 @@ typedef enum { struct PCIExpressDevice { /* Offset of express capability in config space */ uint8_t exp_cap; + /* Offset of Power Management capability in config space */ + uint8_t pm_cap; /* SLOT */ bool hpev_notified; /* Logical AND of conditions for hot plug event.