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charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit On 10-04-2024 03:49, Rodrigo Vivi wrote: > 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 > Cc: Himal Prasad Ghimiray > Signed-off-by: Rodrigo Vivi > --- > 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 > +#include > + > +#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', Acked-by: Himal Prasad Ghimiray --------------WMgQxHtq13EbiCRUTTpl0pce Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: 8bit


On 10-04-2024 03:49, Rodrigo Vivi wrote:
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 <lucas.demarchi@intel.com>
Cc:  Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
---
 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',

Acked-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>


    

  


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