Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_gsc_submit.c b/drivers/gpu/drm/xe/xe_gsc_submit.c
index 8c5381e591..348994b271 100644
--- a/drivers/gpu/drm/xe/xe_gsc_submit.c
+++ b/drivers/gpu/drm/xe/xe_gsc_submit.c
@@ -5,6 +5,8 @@
 
 #include "xe_gsc_submit.h"
 
+#include <linux/poison.h>
+
 #include "abi/gsc_command_header_abi.h"
 #include "xe_bb.h"
 #include "xe_exec_queue.h"
@@ -69,6 +71,17 @@ u32 xe_gsc_emit_header(struct xe_device *xe, struct iosys_map *map, u32 offset,
 };
 
 /**
+ * xe_gsc_poison_header - poison the MTL GSC header in memory
+ * @xe: the Xe device
+ * @map: the iosys map to write to
+ * @offset: offset from the start of the map at which the header resides
+ */
+void xe_gsc_poison_header(struct xe_device *xe, struct iosys_map *map, u32 offset)
+{
+	xe_map_memset(xe, map, offset, POISON_FREE, GSC_HDR_SIZE);
+};
+
+/**
  * xe_gsc_check_and_update_pending - check the pending bit and update the input
  * header with the retry handle from the output header
  * @xe: the Xe device
@@ -112,11 +125,18 @@ int xe_gsc_read_out_header(struct xe_device *xe,
 {
 	u32 marker = mtl_gsc_header_rd(xe, map, offset, validity_marker);
 	u32 size = mtl_gsc_header_rd(xe, map, offset, message_size);
+	u32 status = mtl_gsc_header_rd(xe, map, offset, status);
 	u32 payload_size = size - GSC_HDR_SIZE;
 
 	if (marker != GSC_HECI_VALIDITY_MARKER)
 		return -EPROTO;
 
+	if (status != 0) {
+		drm_err(&xe->drm, "GSC header readout indicates error: %d\n",
+			status);
+		return -EINVAL;
+	}
+
 	if (size < GSC_HDR_SIZE || payload_size < min_payload_size)
 		return -ENODATA;