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