From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37914) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y39pg-0006m7-NH for qemu-devel@nongnu.org; Mon, 22 Dec 2014 15:44:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y39pZ-0007ju-Fo for qemu-devel@nongnu.org; Mon, 22 Dec 2014 15:44:00 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48622) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y39pZ-0007jm-8U for qemu-devel@nongnu.org; Mon, 22 Dec 2014 15:43:53 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id sBMKhqrk013399 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Mon, 22 Dec 2014 15:43:52 -0500 From: Alex Williamson Date: Mon, 22 Dec 2014 13:43:52 -0700 Message-ID: <20141222204351.31398.64545.stgit@bling.home> In-Reply-To: <20141222204144.31398.31803.stgit@bling.home> References: <20141222204144.31398.31803.stgit@bling.home> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PULL 07/14] hw/vfio/pci: add type, name and group fields in VFIODevice List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com From: Eric Auger Add 3 new fields in the VFIODevice struct. Type is set to VFIO_DEVICE_TYPE_PCI. The type enum value will later be used to discriminate between VFIO PCI and platform devices. The name is set to domain:bus:slot:function. Currently used to test whether the device already is attached to the group. Later on, the name will be used to simplify all traces. The group is simply moved from VFIOPCIDevice to VFIODevice. Signed-off-by: Eric Auger [Fix g_strdup_printf() usage] Signed-off-by: Alex Williamson --- hw/vfio/pci.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 22d0c85..be7b8ff 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -48,6 +48,10 @@ #define VFIO_ALLOW_KVM_MSI 1 #define VFIO_ALLOW_KVM_MSIX 1 +enum { + VFIO_DEVICE_TYPE_PCI = 0, +}; + struct VFIOPCIDevice; typedef struct VFIOQuirk { @@ -186,7 +190,10 @@ typedef struct VFIOMSIXInfo { } VFIOMSIXInfo; typedef struct VFIODevice { + struct VFIOGroup *group; + char *name; int fd; + int type; } VFIODevice; typedef struct VFIOPCIDevice { @@ -208,7 +215,6 @@ typedef struct VFIOPCIDevice { VFIOVGA vga; /* 0xa0000, 0x3b0, 0x3c0 */ PCIHostDeviceAddress host; QLIST_ENTRY(VFIOPCIDevice) next; - struct VFIOGroup *group; EventNotifier err_notifier; uint32_t features; #define VFIO_FEATURE_ENABLE_VGA_BIT 0 @@ -3924,7 +3930,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name, } vdev->vbasedev.fd = ret; - vdev->group = group; + vdev->vbasedev.group = group; QLIST_INSERT_HEAD(&group->device_list, vdev, next); /* Sanity check device */ @@ -4054,7 +4060,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name, error: if (ret) { QLIST_REMOVE(vdev, next); - vdev->group = NULL; + vdev->vbasedev.group = NULL; close(vdev->vbasedev.fd); } return ret; @@ -4063,9 +4069,10 @@ error: static void vfio_put_device(VFIOPCIDevice *vdev) { QLIST_REMOVE(vdev, next); - vdev->group = NULL; + vdev->vbasedev.group = NULL; trace_vfio_put_device(vdev->vbasedev.fd); close(vdev->vbasedev.fd); + g_free(vdev->vbasedev.name); if (vdev->msix) { g_free(vdev->msix); vdev->msix = NULL; @@ -4197,6 +4204,11 @@ static int vfio_initfn(PCIDevice *pdev) return -errno; } + vdev->vbasedev.type = VFIO_DEVICE_TYPE_PCI; + vdev->vbasedev.name = g_strdup_printf("%04x:%02x:%02x.%01x", + vdev->host.domain, vdev->host.bus, + vdev->host.slot, vdev->host.function); + strncat(path, "iommu_group", sizeof(path) - strlen(path) - 1); len = readlink(path, iommu_group_path, sizeof(path)); @@ -4227,10 +4239,7 @@ static int vfio_initfn(PCIDevice *pdev) vdev->host.function); QLIST_FOREACH(pvdev, &group->device_list, next) { - if (pvdev->host.domain == vdev->host.domain && - pvdev->host.bus == vdev->host.bus && - pvdev->host.slot == vdev->host.slot && - pvdev->host.function == vdev->host.function) { + if (strcmp(pvdev->vbasedev.name, vdev->vbasedev.name) == 0) { error_report("vfio: error: device %s is already attached", path); vfio_put_group(group); @@ -4333,7 +4342,7 @@ out_put: static void vfio_exitfn(PCIDevice *pdev) { VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev); - VFIOGroup *group = vdev->group; + VFIOGroup *group = vdev->vbasedev.group; vfio_unregister_err_notifier(vdev); pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);