[PATCH v12 06/13] drm/i915/guc: Add GuC's error state capture output structures.

[Alan Previn]

Add GuC's error capture output structures and definitions as how
they would appear in GuC log buffer's error capture subregion after
an error state capture G2H event notification.

Signed-off-by: Alan Previn <alan.previn.teres.alexis at intel.com>
Reviewed-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h b/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
index 6c199433945d..8824c5eba355 100644
--- a/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
+++ b/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
@@ -55,6 +55,53 @@ struct __guc_mmio_reg_descr_group {
 	struct __guc_mmio_reg_descr *extlist; /* only used for steered registers */
 };
 
+/**
+ * struct guc_state_capture_header_t / struct guc_state_capture_t /
+ * guc_state_capture_group_header_t / guc_state_capture_group_t
+ *
+ * Prior to resetting engines that have hung or faulted, GuC microkernel
+ * reports the engine error-state (register values that was read) by
+ * logging them into the shared GuC log buffer using these hierarchy
+ * of structures.
+ */
+struct guc_state_capture_header_t {
+	u32 owner;
+#define CAP_HDR_CAPTURE_VFID GENMASK(7, 0)
+	u32 info;
+#define CAP_HDR_CAPTURE_TYPE GENMASK(3, 0) /* see enum guc_capture_type */
+#define CAP_HDR_ENGINE_CLASS GENMASK(7, 4) /* see GUC_MAX_ENGINE_CLASSES */
+#define CAP_HDR_ENGINE_INSTANCE GENMASK(11, 8)
+	u32 lrca; /* if type-instance, LRCA (address) that hung, else set to ~0 */
+	u32 guc_id; /* if type-instance, context index of hung context, else set to ~0 */
+	u32 num_mmios;
+#define CAP_HDR_NUM_MMIOS GENMASK(9, 0)
+} __packed;
+
+struct guc_state_capture_t {
+	struct guc_state_capture_header_t header;
+	struct guc_mmio_reg mmio_entries[0];
+} __packed;
+
+enum guc_capture_group_types {
+	GUC_STATE_CAPTURE_GROUP_TYPE_FULL,
+	GUC_STATE_CAPTURE_GROUP_TYPE_PARTIAL,
+	GUC_STATE_CAPTURE_GROUP_TYPE_MAX,
+};
+
+struct guc_state_capture_group_header_t {
+	u32 owner;
+#define CAP_GRP_HDR_CAPTURE_VFID GENMASK(7, 0)
+	u32 info;
+#define CAP_GRP_HDR_NUM_CAPTURES GENMASK(7, 0)
+#define CAP_GRP_HDR_CAPTURE_TYPE GENMASK(15, 8) /* guc_capture_group_types */
+} __packed;
+
+/* this is the top level structure where an error-capture dump starts */
+struct guc_state_capture_group_t {
+	struct guc_state_capture_group_header_t grp_header;
+	struct guc_state_capture_t capture_entries[0];
+} __packed;
+
 /**
  * struct __guc_capture_ads_cache
  *
-- 
2.25.1