<!DOCTYPE html><html><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <p><br> </p> <div class="moz-cite-prefix">On 10-04-2024 03:49, Rodrigo Vivi wrote:<br> </div> <blockquote type="cite" cite="mid:20240409221908.1077893-1-rodrigo.vivi@intel.com"> <pre class="moz-quote-pre" wrap="">Let's inject a gt_reset failure that will put Xe device in the new wedged state, then we confirm the IOCTL is blocked and we reload the driver to get back to a clean state for other test execution, since wedged state in Xe is a final state that can only be cleared with a device rebind/reprobe. The fault injection of this test is entirely based on xe_uevent provided by Himal. v2: Use rebind instead of module reload (Lucas) And other improvements also pointed out by Lucas. Cc: Lucas De Marchi <a class="moz-txt-link-rfc2396E" href="mailto:lucas.demarchi@intel.com"><lucas.demarchi@intel.com></a> Cc: Himal Prasad Ghimiray <a class="moz-txt-link-rfc2396E" href="mailto:himal.prasad.ghimiray@intel.com"><himal.prasad.ghimiray@intel.com></a> Signed-off-by: Rodrigo Vivi <a class="moz-txt-link-rfc2396E" href="mailto:rodrigo.vivi@intel.com"><rodrigo.vivi@intel.com></a> --- tests/intel/xe_wedged.c | 108 ++++++++++++++++++++++++++++++++++++++++ tests/meson.build | 1 + 2 files changed, 109 insertions(+) create mode 100644 tests/intel/xe_wedged.c diff --git a/tests/intel/xe_wedged.c b/tests/intel/xe_wedged.c new file mode 100644 index 000000000..f2587cc43 --- /dev/null +++ b/tests/intel/xe_wedged.c @@ -0,0 +1,108 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2024 Intel Corporation + */ + +/** + * TEST: cause fake gt reset failure which put Xe device in wedged state + * Category: Software building block + * Sub-category: driver + * Functionality: wedged + * Test category: functionality test + */ + +#include <limits.h> +#include <dirent.h> + +#include "igt.h" +#include "igt_device.h" +#include "igt_kmod.h" +#include "igt_sysfs.h" + +#include "xe/xe_ioctl.h" + +static void force_wedged(int fd) +{ + igt_debugfs_write(fd, "fail_gt_reset/probability", "100"); + igt_debugfs_write(fd, "fail_gt_reset/times", "2"); + + xe_force_gt_reset(fd, 0); + sleep(1); +} + +static int rebind_xe(int fd) +{ + char pci_slot[NAME_MAX]; + int sysfs; + + igt_device_get_pci_slot_name(fd, pci_slot); + + sysfs = open("/sys/bus/pci/drivers/xe", O_DIRECTORY); + igt_assert(sysfs); + + igt_assert(igt_sysfs_set(sysfs, "unbind", pci_slot)); + + /* + * We need to close the client for a proper release, before + * binding back again. + */ + close(fd); + + igt_assert(igt_sysfs_set(sysfs, "bind", pci_slot)); + close(sysfs); + + /* Renew the client connection */ + fd = drm_open_driver(DRIVER_XE); + igt_assert(fd); + + return fd; +} + +static int simple_ioctl(int fd) +{ + int ret; + + struct drm_xe_vm_create create = { + .extensions = 0, + .flags = 0, + }; + + ret = igt_ioctl(fd, DRM_IOCTL_XE_VM_CREATE, &create); + + if (ret == 0) + xe_vm_destroy(fd, create.vm_id); + + return ret; +} + +/** + * SUBTEST: basic-wedged + * Description: Force Xe device wedged after injecting a failure in GT reset + */ +igt_main +{ + int fd; + + igt_fixture { + fd = drm_open_driver(DRIVER_XE); + } + + igt_subtest("basic-wedged") { + igt_require(igt_debugfs_exists(fd, "fail_gt_reset/probability", + O_RDWR)); + + igt_assert_eq(simple_ioctl(fd), 0); + force_wedged(fd); + igt_assert_neq(simple_ioctl(fd), 0); + fd = rebind_xe(fd); + igt_assert_eq(simple_ioctl(fd), 0); + } + + igt_fixture { + if (igt_debugfs_exists(fd, "fail_gt_reset/probability", O_RDWR)) { + igt_debugfs_write(fd, "fail_gt_reset/probability", "0"); + igt_debugfs_write(fd, "fail_gt_reset/times", "1"); + } + drm_close_driver(fd); + } +} diff --git a/tests/meson.build b/tests/meson.build index a856510fc..65b8bf23b 100644 --- a/tests/meson.build +++ b/tests/meson.build @@ -274,6 +274,7 @@ intel_kms_progs = [ ] intel_xe_progs = [ + 'xe_wedged', 'xe_ccs', 'xe_create', 'xe_compute',</pre> </blockquote>  <p class="MsoPlainText">Acked-by: Himal Prasad Ghimiray <<a href="mailto:himal.prasad.ghimiray@intel.com" class="moz-txt-link-freetext">himal.prasad.ghimiray@intel.com</a>></p> <blockquote type="cite" cite="mid:20240409221908.1077893-1-rodrigo.vivi@intel.com"> <pre class="moz-quote-pre" wrap=""> </pre> </blockquote> </body> </html>