From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2A1C710ED67E for ; Fri, 27 Mar 2026 14:07:05 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D5F7E10EDA3; Fri, 27 Mar 2026 14:07:04 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="dIL2uImL"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5D1D910E050 for ; Fri, 27 Mar 2026 14:06:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774620416; x=1806156416; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=YVdlPmyE6nFS+vH3kxiGkvTcMaVcbENOr5UHkP//ak0=; b=dIL2uImLlbwwe+HU0sSB6ODLigQ+d77WNBJcWIMKGMBNd88rsXwR6iYN 5B0yn2MA9sAjPQ6OFIa95x/SUb3G1mKPtYFI5UYR4a/eT0tLJGmIfiaUS LxbcyebPJib/eOUIHGGRgdyhTQJmCEyDJqEzULlk1tyGypJnMRDv1f1Ky zaLw7YToOc7n+qhUVi9lBI6AKTO1SYM7tDGoIZxuypB06Hp+MDN0rwRAk s25ErK8tsNqu3RG/aBVOoiS5crC40V20FV8lWuI5ZZeHi4Fqq+Y0nm1XE 9AkwdqTqHp67+eatQRaJLs1Ul/WULEnVmMEb9wt7Lv4Oeklw1jdi5aQ6R Q==; X-CSE-ConnectionGUID: fSFmnMQ5TN+ZstHBonnI7A== X-CSE-MsgGUID: fBQs4+rxSuCZLdAitL9E7A== X-IronPort-AV: E=McAfee;i="6800,10657,11741"; a="98309538" X-IronPort-AV: E=Sophos;i="6.23,144,1770624000"; d="scan'208";a="98309538" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2026 07:06:56 -0700 X-CSE-ConnectionGUID: g6haNbfnQYibt2P7kziY9A== X-CSE-MsgGUID: LrVqNxhiQZC0/hCENLktSQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,144,1770624000"; d="scan'208";a="263267968" Received: from lvasutx-mobl1.ger.corp.intel.com (HELO localhost) ([10.246.16.239]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2026 07:06:55 -0700 From: Marcin Bernatowicz To: igt-dev@lists.freedesktop.org Cc: kamil.konieczny@linux.intel.com, adam.miszczak@linux.intel.com, jakub1.kolakowski@intel.com, lukasz.laguna@intel.com, Marcin Bernatowicz Subject: [PATCH v2 i-g-t 4/4] tests/intel/xe_sriov_vfio: Add region-info subtest Date: Fri, 27 Mar 2026 15:06:27 +0100 Message-ID: <20260327140627.64574-5-marcin.bernatowicz@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260327140627.64574-1-marcin.bernatowicz@linux.intel.com> References: <20260327140627.64574-1-marcin.bernatowicz@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Bind a VF to xe-vfio-pci, open the VFIO device, and query VFIO region information. This provides basic coverage for VFIO BAR exposure and device region enumeration. Signed-off-by: Marcin Bernatowicz Cc: Adam Miszczak Cc: Jakub Kolakowski Cc: Kamil Konieczny Cc: Lukasz Laguna --- v2: - Introduce vf_num variable for clarity (Lukasz) - Remove unnecessary unbind (Lukasz) --- tests/intel/xe_sriov_vfio.c | 85 +++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/tests/intel/xe_sriov_vfio.c b/tests/intel/xe_sriov_vfio.c index 6a86b3780..f42deaea6 100644 --- a/tests/intel/xe_sriov_vfio.c +++ b/tests/intel/xe_sriov_vfio.c @@ -28,6 +28,9 @@ * * SUBTEST: open-basic * Description: Bind VF to xe-vfio-pci and perform minimal VFIO group open and status ioctl. + * + * SUBTEST: region-info + * Description: Bind VF to xe-vfio-pci, open VFIO device and query VFIO region info (BAR sizes). */ IGT_TEST_DESCRIPTION("Xe SR-IOV VFIO tests (xe-vfio-pci)"); @@ -218,6 +221,58 @@ static void vfio_open_basic(const char *pci_slot) vfio_close_device(&fds); } +static void vfio_open_device(const char *pci_slot, struct vfio_dev_fds *out) +{ + struct vfio_group_status group_status; + int ret; + + vfio_open_group(pci_slot, out, &group_status); + + igt_require_f(group_status.flags & VFIO_GROUP_FLAGS_VIABLE, + "VFIO group %s is not viable (flags=0x%x)\n", + out->group_id, group_status.flags); + + ret = ioctl(out->group_fd, VFIO_GROUP_SET_CONTAINER, &out->container_fd); + igt_require_f(ret == 0, "VFIO_GROUP_SET_CONTAINER failed (%d)\n", -errno); + + ret = ioctl(out->container_fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU); + igt_require_f(ret == 0, "VFIO_SET_IOMMU(VFIO_TYPE1_IOMMU) failed (%d)\n", -errno); + + out->device_fd = ioctl(out->group_fd, VFIO_GROUP_GET_DEVICE_FD, (char *)pci_slot); + igt_assert_f(out->device_fd >= 0, "VFIO_GROUP_GET_DEVICE_FD(%s) failed (%d)\n", + pci_slot, -errno); +} + +static void vfio_dump_region_info(int device_fd) +{ + struct vfio_device_info dinfo = { .argsz = sizeof(dinfo) }; + int ret; + + ret = ioctl(device_fd, VFIO_DEVICE_GET_INFO, &dinfo); + igt_assert_f(ret == 0, "VFIO_DEVICE_GET_INFO failed (%d)\n", -errno); + + igt_info("VFIO device: flags=0x%x num_regions=%u num_irqs=%u\n", + dinfo.flags, dinfo.num_regions, dinfo.num_irqs); + + for (uint32_t i = 0; i < dinfo.num_regions; i++) { + struct vfio_region_info rinfo = { + .argsz = sizeof(rinfo), + .index = i, + }; + + ret = ioctl(device_fd, VFIO_DEVICE_GET_REGION_INFO, &rinfo); + igt_assert_f(ret == 0, "VFIO_DEVICE_GET_REGION_INFO(index=%u) failed (%d)\n", + i, -errno); + + igt_info("region[%u]: size=%llu offset=%llu flags=0x%x caps=%u\n", + i, + (unsigned long long)rinfo.size, + (unsigned long long)rinfo.offset, + rinfo.flags, + rinfo.cap_offset); + } +} + static void open_pf(void) { int fd; @@ -343,6 +398,36 @@ int igt_main() igt_sriov_disable_vfs(pf_fd); } + igt_describe("Bind VF to xe-vfio-pci and query VFIO region info (BAR sizes). "); + igt_subtest("region-info") { + unsigned int vf_num = 1; + struct vfio_dev_fds fds; + char *slot = NULL; + + igt_skip_on_f(igt_kmod_load(XE_VFIO_PCI_MOD, NULL), + "Failed to load %s\n", XE_VFIO_PCI_MOD); + + open_pf(); + + igt_sriov_disable_driver_autoprobe(pf_fd); + igt_sriov_enable_vfs(pf_fd, vf_num); + + igt_require_f(!igt_pci_system_reinit(), "Failed to refresh PCI state\n"); + igt_sriov_enable_driver_autoprobe(pf_fd); + + slot = vf_pci_slot_alloc(vf_num); + + vf_bind_override(vf_num, XE_VFIO_PCI_DRV); + + vfio_open_device(slot, &fds); + vfio_dump_region_info(fds.device_fd); + vfio_close_device(&fds); + + vf_unbind_override(vf_num); + free(slot); + igt_sriov_disable_vfs(pf_fd); + } + igt_fixture() { cleanup_pf(); restore_xe_vfio_module(); -- 2.43.0