diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_guc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c index 350434a8b953..52453845d1bd 100644 --- a/drivers/gpu/drm/xe/xe_guc.c +++ b/drivers/gpu/drm/xe/xe_guc.c @@ -1289,6 +1289,7 @@ int xe_guc_mmio_send_recv(struct xe_guc *guc, const u32 *request, struct xe_reg reply_reg = xe_gt_is_media_type(gt) ? MED_VF_SW_FLAG(0) : VF_SW_FLAG(0); const u32 LAST_INDEX = VF_SW_FLAG_COUNT - 1; + bool lost = false; int ret; int i; @@ -1322,6 +1323,12 @@ retry: FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_GUC), 50000, &reply, false); if (ret) { + /* scratch registers might be cleared during FLR, try once more */ + if (!reply && !lost) { + xe_gt_dbg(gt, "GuC mmio request %#x: lost, trying again\n", request[0]); + lost = true; + goto retry; + } timeout: xe_gt_err(gt, "GuC mmio request %#x: no reply %#x\n", request[0], reply); |