1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pat.h b/drivers/gpu/drm/xe/xe_pat.h
new file mode 100644
index 000000000000..fa0dfbe525cd
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pat.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_PAT_H_
+#define _XE_PAT_H_
+
+#include <linux/types.h>
+
+struct drm_printer;
+struct xe_device;
+struct xe_gt;
+
+/**
+ * struct xe_pat_table_entry - The pat_index encoding and other meta information.
+ */
+struct xe_pat_table_entry {
+	/**
+	 * @value: The platform specific value encoding the various memory
+	 * attributes (this maps to some fixed pat_index). So things like
+	 * caching, coherency, compression etc can be encoded here.
+	 */
+	u32 value;
+
+	/**
+	 * @coh_mode: The GPU coherency mode that @value maps to.
+	 */
+#define XE_COH_NONE          1
+#define XE_COH_AT_LEAST_1WAY 2
+	u16 coh_mode;
+};
+
+/**
+ * xe_pat_init_early - SW initialization, setting up data based on device
+ * @xe: xe device
+ */
+void xe_pat_init_early(struct xe_device *xe);
+
+/**
+ * xe_pat_init - Program HW PAT table
+ * @gt: GT structure
+ */
+void xe_pat_init(struct xe_gt *gt);
+
+/**
+ * xe_pat_dump - Dump PAT table
+ * @gt: GT structure
+ * @p: Printer to dump info to
+ */
+void xe_pat_dump(struct xe_gt *gt, struct drm_printer *p);
+
+/**
+ * xe_pat_index_get_coh_mode - Extract the coherency mode for the given
+ * pat_index.
+ * @xe: xe device
+ * @pat_index: The pat_index to query
+ */
+u16 xe_pat_index_get_coh_mode(struct xe_device *xe, u16 pat_index);
+
+#endif