From patchwork Tue Sep 20 20:45:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 9342435 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 9D72F601C2 for ; Tue, 20 Sep 2016 20:59:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8E42729B20 for ; Tue, 20 Sep 2016 20:59:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 830CB29B24; Tue, 20 Sep 2016 20:59:37 +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 E689729B20 for ; Tue, 20 Sep 2016 20:59:36 +0000 (UTC) Received: from localhost ([::1]:38055 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bmS8e-00079V-2l for patchwork-qemu-devel@patchwork.kernel.org; Tue, 20 Sep 2016 16:59:36 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42657) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bmRvh-0004zF-7j for qemu-devel@nongnu.org; Tue, 20 Sep 2016 16:46:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bmRve-0007MM-Q3 for qemu-devel@nongnu.org; Tue, 20 Sep 2016 16:46:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41086) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bmRve-0007Lr-GN for qemu-devel@nongnu.org; Tue, 20 Sep 2016 16:46:10 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (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 F0541C05490C; Tue, 20 Sep 2016 20:46:09 +0000 (UTC) Received: from localhost.redhat.com (vpn1-4-38.ams2.redhat.com [10.36.4.38]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u8KKjufm030187; Tue, 20 Sep 2016 16:46:08 -0400 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, qemu-devel@nongnu.org, alex.williamson@redhat.com, armbru@redhat.com Date: Tue, 20 Sep 2016 20:45:45 +0000 Message-Id: <1474404352-28958-6-git-send-email-eric.auger@redhat.com> In-Reply-To: <1474404352-28958-1-git-send-email-eric.auger@redhat.com> References: <1474404352-28958-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Tue, 20 Sep 2016 20:46:10 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 05/12] vfio/pci: Pass an error object to vfio_add_capabilities 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: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Pass an error object to prepare for migration to VFIO-PCI realize. The error is cascaded downto vfio_add_std_cap and then vfio_msi(x)_setup, vfio_setup_pcie_cap. vfio_add_ext_cap does not return anything else than 0 so let's transform it into a void function. Also use pci_add_capability2 which takes an error object. Signed-off-by: Eric Auger --- hw/vfio/pci.c | 66 ++++++++++++++++++++++++++++++++--------------------------- 1 file changed, 36 insertions(+), 30 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index f67eec4..07a44f5 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1178,7 +1178,7 @@ static void vfio_disable_interrupts(VFIOPCIDevice *vdev) } } -static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos) +static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp) { uint16_t ctrl; bool msi_64bit, msi_maskbit; @@ -1202,8 +1202,7 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos) if (ret == -ENOTSUP) { return 0; } - error_prepend(&err, "vfio: msi_init failed: "); - error_report_err(err); + error_propagate(errp, err); return ret; } vdev->msi_cap_size = 0xa + (msi_maskbit ? 0xa : 0) + (msi_64bit ? 0x4 : 0); @@ -1361,7 +1360,7 @@ static int vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) return 0; } -static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos) +static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp) { int ret; @@ -1376,7 +1375,7 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos) if (ret == -ENOTSUP) { return 0; } - error_report("vfio: msix_init failed"); + error_setg(errp, "msix_init failed"); return ret; } @@ -1561,7 +1560,8 @@ static void vfio_add_emulated_long(VFIOPCIDevice *vdev, int pos, vfio_set_long_bits(vdev->emulated_config_bits + pos, mask, mask); } -static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size) +static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, + Error **errp) { uint16_t flags; uint8_t type; @@ -1573,8 +1573,8 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size) type != PCI_EXP_TYPE_LEG_END && type != PCI_EXP_TYPE_RC_END) { - error_report("vfio: Assignment of PCIe type 0x%x " - "devices is not currently supported", type); + error_setg(errp, "assignment of PCIe type 0x%x " + "devices is not currently supported", type); return -EINVAL; } @@ -1708,10 +1708,11 @@ static void vfio_check_af_flr(VFIOPCIDevice *vdev, uint8_t pos) } } -static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos) +static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp) { PCIDevice *pdev = &vdev->pdev; uint8_t cap_id, next, size; + Error *err = NULL; int ret; cap_id = pdev->config[pos]; @@ -1733,9 +1734,9 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos) * will be changed as we unwind the stack. */ if (next) { - ret = vfio_add_std_cap(vdev, next); + ret = vfio_add_std_cap(vdev, next, &err); if (ret) { - return ret; + goto out; } } else { /* Begin the rebuild, use QEMU emulated list bits */ @@ -1749,40 +1750,42 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos) switch (cap_id) { case PCI_CAP_ID_MSI: - ret = vfio_msi_setup(vdev, pos); + ret = vfio_msi_setup(vdev, pos, &err); break; case PCI_CAP_ID_EXP: vfio_check_pcie_flr(vdev, pos); - ret = vfio_setup_pcie_cap(vdev, pos, size); + ret = vfio_setup_pcie_cap(vdev, pos, size, &err); break; case PCI_CAP_ID_MSIX: - ret = vfio_msix_setup(vdev, pos); + ret = vfio_msix_setup(vdev, pos, &err); break; case PCI_CAP_ID_PM: vfio_check_pm_reset(vdev, pos); vdev->pm_cap = pos; - ret = pci_add_capability(pdev, cap_id, pos, size); + ret = pci_add_capability2(pdev, cap_id, pos, size, &err); break; case PCI_CAP_ID_AF: vfio_check_af_flr(vdev, pos); - ret = pci_add_capability(pdev, cap_id, pos, size); + ret = pci_add_capability2(pdev, cap_id, pos, size, &err); break; default: - ret = pci_add_capability(pdev, cap_id, pos, size); + ret = pci_add_capability2(pdev, cap_id, pos, size, &err); break; } - if (ret < 0) { - error_report("vfio: %s Error adding PCI capability " - "0x%x[0x%x]@0x%x: %d", vdev->vbasedev.name, - cap_id, size, pos, ret); - return ret; +out: + error_propagate(errp, err); + if (*errp) { + error_prepend(errp, + "failed to add PCI capability 0x%x[0x%x]@0x%x: ", + cap_id, size, pos); } - return 0; + return ret < 0 ? ret : 0; + } -static int vfio_add_ext_cap(VFIOPCIDevice *vdev) +static void vfio_add_ext_cap(VFIOPCIDevice *vdev) { PCIDevice *pdev = &vdev->pdev; uint32_t header; @@ -1793,7 +1796,7 @@ static int vfio_add_ext_cap(VFIOPCIDevice *vdev) /* Only add extended caps if we have them and the guest can see them */ if (!pci_is_express(pdev) || !pci_bus_is_express(pdev->bus) || !pci_get_long(pdev->config + PCI_CONFIG_SPACE_SIZE)) { - return 0; + return; } /* @@ -1858,12 +1861,13 @@ static int vfio_add_ext_cap(VFIOPCIDevice *vdev) } g_free(config); - return 0; + return; } -static int vfio_add_capabilities(VFIOPCIDevice *vdev) +static int vfio_add_capabilities(VFIOPCIDevice *vdev, Error **errp) { PCIDevice *pdev = &vdev->pdev; + Error *err = NULL; int ret; if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST) || @@ -1871,12 +1875,14 @@ static int vfio_add_capabilities(VFIOPCIDevice *vdev) return 0; /* Nothing to add */ } - ret = vfio_add_std_cap(vdev, pdev->config[PCI_CAPABILITY_LIST]); + ret = vfio_add_std_cap(vdev, pdev->config[PCI_CAPABILITY_LIST], &err); if (ret) { + error_propagate(errp, err); return ret; } - return vfio_add_ext_cap(vdev); + vfio_add_ext_cap(vdev); + return 0; } static void vfio_pci_pre_reset(VFIOPCIDevice *vdev) @@ -2680,7 +2686,7 @@ static int vfio_initfn(PCIDevice *pdev) vfio_bars_setup(vdev); - ret = vfio_add_capabilities(vdev); + ret = vfio_add_capabilities(vdev, &err); if (ret) { goto out_teardown; }