diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gsc_submit.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gsc_submit.c | 20 |
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; |