/* SPDX-License-Identifier: MIT *//* * Copyright © 2026 Intel Corporation */ #ifndef __DRM_RAS_H__#define __DRM_RAS_H__ #include <linux/types.h> #include <uapi/drm/drm_ras.h> /** * struct drm_ras_node - A DRM RAS Node */struct drm_ras_node {	/** @id: Unique identifier for the node. Dynamically assigned. */	u32 id;	/**	 * @device_name: Human-readable name of the device. Given by the driver.	 */	const char *device_name;	/** @node_name: Human-readable name of the node. Given by the driver. */	const char *node_name;	/** @type: Type of the node (enum drm_ras_node_type). */	enum drm_ras_node_type type; 	/* Error-Counter Related Callback and Variables */ 	/** @error_counter_range: Range of valid Error IDs for this node. */	struct {		/** @first: First valid Error ID. */		u32 first;		/** @last: Last valid Error ID. Mandatory entry. */		u32 last;	} error_counter_range; 	/**	 * @query_error_counter:	 *	 * This callback is used by drm-ras to query a specific error counter.	 * Used for input check and to iterate all error counters in a node.	 *	 * Driver should expect query_error_counter() to be called with	 * error_id from `error_counter_range.first` to	 * `error_counter_range.last`.	 *	 * The @query_error_counter is a mandatory callback for	 * error_counter_node.	 *	 * Returns: 0 on success,	 *          -ENOENT when error_id is not supported as an indication that	 *                  drm_ras should silently skip this entry. Used for	 *                  supporting non-contiguous error ranges.	 *                  Driver is responsible for maintaining the list of	 *                  supported error IDs in the range of first to last.	 *          Other negative values on errors that should terminate the	 *          netlink query.	 */	int (*query_error_counter)(struct drm_ras_node *node, u32 error_id,				   const char **name, u32 *val); 	/**	 * @clear_error_counter:	 *	 * This callback is used by drm_ras to clear a specific error counter.	 * Driver should implement this callback to support clearing error counters	 * of a node.	 *	 * Returns: 0 on success, negative error code on failure.	 */	int (*clear_error_counter)(struct drm_ras_node *node, u32 error_id); 	/** @priv: Driver private data */	void *priv;}; struct drm_device; #if IS_ENABLED(CONFIG_DRM_RAS)int drm_ras_node_register(struct drm_ras_node *node);void drm_ras_node_unregister(struct drm_ras_node *node);#elsestatic inline int drm_ras_node_register(struct drm_ras_node *node) { return 0; }static inline void drm_ras_node_unregister(struct drm_ras_node *node) { }#endif #endif