[PATCH v2 19/24] drm/i915/guc: Update GuC CTB response definition

[Michal Wajdeczko]

Current GuC firmwares identify response message in a different way.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Kelvin Gardiner <kelvin.gardiner at intel.com>
Cc: John Spotswood <john.a.spotswood at intel.com>
---
 drivers/gpu/drm/i915/intel_guc_ct.c   | 2 +-
 drivers/gpu/drm/i915/intel_guc_fwif.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c
index dde1dc0d6e69..2d5dc2aa22a7 100644
--- a/drivers/gpu/drm/i915/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/intel_guc_ct.c
@@ -565,7 +565,7 @@ static inline unsigned int ct_header_get_action(u32 header)
 
 static inline bool ct_header_is_response(u32 header)
 {
-	return ct_header_get_action(header) == INTEL_GUC_ACTION_DEFAULT;
+	return !!(header & GUC_CT_MSG_IS_RESPONSE);
 }
 
 static int ctb_read(struct intel_guc_ct_buffer *ctb, u32 *data)
diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h
index 68dfeecf7b26..115c693daf8e 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -361,6 +361,7 @@ struct guc_ct_buffer_desc {
  *
  * bit[4..0]	message len (in dwords)
  * bit[7..5]	reserved
+ * bit[8]	response (G2H only)
  * bit[8]	write fence to desc
  * bit[9]	write status to H2G buff
  * bit[10]	send status (via G2H)
@@ -369,6 +370,7 @@ struct guc_ct_buffer_desc {
  */
 #define GUC_CT_MSG_LEN_SHIFT			0
 #define GUC_CT_MSG_LEN_MASK			0x1F
+#define GUC_CT_MSG_IS_RESPONSE			(1 << 8)
 #define GUC_CT_MSG_WRITE_FENCE_TO_DESC		(1 << 8)
 #define GUC_CT_MSG_WRITE_STATUS_TO_BUFF		(1 << 9)
 #define GUC_CT_MSG_SEND_STATUS			(1 << 10)
-- 
2.19.2