[PATCH v6 3/4] drm/xe/vf: Disallow setting wedged mode to upon-any-hang

[Lukasz Laguna]

In upon-any-hang (2) wedged mode, engine resets need to be disabled,
which requires changing the GuC reset policy. VFs are not permitted to
do that.

Signed-off-by: Lukasz Laguna <lukasz.laguna at intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
---
 drivers/gpu/drm/xe/xe_device.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index 0aea87994541..c495d499edff 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -1186,6 +1186,11 @@ int xe_device_validate_wedged_mode(struct xe_device *xe, unsigned int mode)
 	if (mode > XE_WEDGED_MODE_UPON_ANY_HANG) {
 		drm_dbg(&xe->drm, "wedged_mode: invalid value (%u)\n", mode);
 		return -EINVAL;
+	} else if (mode == XE_WEDGED_MODE_UPON_ANY_HANG && IS_SRIOV_VF(xe)) {
+		drm_dbg(&xe->drm, "wedged_mode: (%u) %s mode is not supported for %s\n",
+			mode, xe_device_wedged_mode_to_string(mode),
+			xe_sriov_mode_to_string(xe_device_sriov_mode(xe)));
+		return -EPERM;
 	}
 
 	return 0;
-- 
2.40.0