From patchwork Tue Sep 26 11:32:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 1839642 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=l3VU1CSM; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RvyhK1Ms5z1ynX for ; Tue, 26 Sep 2023 21:49:21 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ql6Y2-00033u-86; Tue, 26 Sep 2023 07:48:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ql6Xy-0002zg-72 for qemu-devel@nongnu.org; Tue, 26 Sep 2023 07:48:10 -0400 Received: from mgamail.intel.com ([192.55.52.93]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ql6Xj-0002Mt-Jl for qemu-devel@nongnu.org; Tue, 26 Sep 2023 07:48:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695728875; x=1727264875; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SKbGSJRkoXFYsmQVffqrbFr8nwtKsb/trPCYpgtqPUM=; b=l3VU1CSM4PdvG8XKWTdmZgsfml7pITX7JmYfMPBmSamBNYlkZIbx8ZGz PC+y3v8Il7zU33+GNNGnJ3e/ZOMPNwfl6HYeQYXXzZS76xfE3FP7YFX8i AONJZv7jivBfkIsI7N6ACPBSMdJG456QFFBaVjzR+SQJzYiAr4Ck7jgJ8 eBynUpsexbfe6chWVCtVB6111I3FY1DKO0HpofaVnk+bxjxNWxUKdBV77 OtF61m6lcid5T6RkATdtvaE3DaToHHdYCwff8lWkmRFm/+QdiPipKW/3e dRkuhSv0+8K5ueq/wCJ6Lx6eZFG8qsna2A7Q4BEXwIJtHhKuqWdKBLDoP Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="378825441" X-IronPort-AV: E=Sophos;i="6.03,177,1694761200"; d="scan'208";a="378825441" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2023 04:47:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="748789684" X-IronPort-AV: E=Sophos;i="6.03,177,1694761200"; d="scan'208";a="748789684" Received: from duan-server-s2600bt.bj.intel.com ([10.240.192.147]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2023 04:47:50 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v2 07/12] vfio/platform: Use vfio_[attach/detach]_device Date: Tue, 26 Sep 2023 19:32:50 +0800 Message-Id: <20230926113255.1177834-8-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230926113255.1177834-1-zhenzhong.duan@intel.com> References: <20230926113255.1177834-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.93; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Eric Auger Let the vfio-platform device use vfio_attach_device() and vfio_detach_device(), hence hiding the details of the used IOMMU backend. Drop the trace event for vfio-platform as we have similar one in vfio_attach_device. Signed-off-by: Eric Auger Signed-off-by: Yi Liu Signed-off-by: Zhenzhong Duan --- hw/vfio/platform.c | 43 +++---------------------------------------- hw/vfio/trace-events | 1 - 2 files changed, 3 insertions(+), 41 deletions(-) diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c index 5af73f9287..8e3d4ac458 100644 --- a/hw/vfio/platform.c +++ b/hw/vfio/platform.c @@ -529,12 +529,7 @@ static VFIODeviceOps vfio_platform_ops = { */ static int vfio_base_device_init(VFIODevice *vbasedev, Error **errp) { - VFIOGroup *group; - VFIODevice *vbasedev_iter; - char *tmp, group_path[PATH_MAX], *group_name; - ssize_t len; struct stat st; - int groupid; int ret; /* @sysfsdev takes precedence over @host */ @@ -557,47 +552,15 @@ static int vfio_base_device_init(VFIODevice *vbasedev, Error **errp) return -errno; } - tmp = g_strdup_printf("%s/iommu_group", vbasedev->sysfsdev); - len = readlink(tmp, group_path, sizeof(group_path)); - g_free(tmp); - - if (len < 0 || len >= sizeof(group_path)) { - ret = len < 0 ? -errno : -ENAMETOOLONG; - error_setg_errno(errp, -ret, "no iommu_group found"); - return ret; - } - - group_path[len] = 0; - - group_name = basename(group_path); - if (sscanf(group_name, "%d", &groupid) != 1) { - error_setg_errno(errp, errno, "failed to read %s", group_path); - return -errno; - } - - trace_vfio_platform_base_device_init(vbasedev->name, groupid); - - group = vfio_get_group(groupid, &address_space_memory, errp); - if (!group) { - return -ENOENT; - } - - QLIST_FOREACH(vbasedev_iter, &group->device_list, next) { - if (strcmp(vbasedev_iter->name, vbasedev->name) == 0) { - error_setg(errp, "device is already attached"); - vfio_put_group(group); - return -EBUSY; - } - } - ret = vfio_get_device(group, vbasedev->name, vbasedev, errp); + ret = vfio_attach_device(vbasedev->name, vbasedev, + &address_space_memory, errp); if (ret) { - vfio_put_group(group); return ret; } ret = vfio_populate_device(vbasedev, errp); if (ret) { - vfio_put_group(group); + vfio_detach_device(vbasedev); } return ret; diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events index e710026a73..3ac914854b 100644 --- a/hw/vfio/trace-events +++ b/hw/vfio/trace-events @@ -120,7 +120,6 @@ vfio_get_dirty_bitmap(int fd, uint64_t iova, uint64_t size, uint64_t bitmap_size vfio_iommu_map_dirty_notify(uint64_t iova_start, uint64_t iova_end) "iommu dirty @ 0x%"PRIx64" - 0x%"PRIx64 # platform.c -vfio_platform_base_device_init(char *name, int groupid) "%s belongs to group #%d" vfio_platform_realize(char *name, char *compat) "vfio device %s, compat = %s" vfio_platform_eoi(int pin, int fd) "EOI IRQ pin %d (fd=%d)" vfio_platform_intp_mmap_enable(int pin) "IRQ #%d still active, stay in slow path"