From: Michal Wajdeczko Date: Fri, 5 Apr 2024 13:39:36 +0000 (+0200) Subject: drm/xe/vf: Don't try to read legacy GuC MMIO notification if VF X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f2b81483d39d14a3028a4592ee1f89578832d0fa;p=linux.git drm/xe/vf: Don't try to read legacy GuC MMIO notification if VF Legacy SOFT_SCRATCH registers are not accessible from the VF. Any G2H notification posted there will be handled by the PF driver. Signed-off-by: Michal Wajdeczko Reviewed-by: Himal Prasad Ghimiray Link: https://patchwork.freedesktop.org/patch/msgid/20240405133936.891-4-michal.wajdeczko@intel.com --- diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c index 59fe73770711a..240e7a4bbff1a 100644 --- a/drivers/gpu/drm/xe/xe_guc.c +++ b/drivers/gpu/drm/xe/xe_guc.c @@ -591,6 +591,9 @@ static void guc_handle_mmio_msg(struct xe_guc *guc) struct xe_gt *gt = guc_to_gt(guc); u32 msg; + if (IS_SRIOV_VF(guc_to_xe(guc))) + return; + xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT); msg = xe_mmio_read32(gt, SOFT_SCRATCH(15));