cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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of_graph.h (3636B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * OF graph binding parsing helpers
      4 *
      5 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
      6 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
      7 *
      8 * Copyright (C) 2012 Renesas Electronics Corp.
      9 * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
     10 */
     11#ifndef __LINUX_OF_GRAPH_H
     12#define __LINUX_OF_GRAPH_H
     13
     14#include <linux/types.h>
     15#include <linux/errno.h>
     16
     17/**
     18 * struct of_endpoint - the OF graph endpoint data structure
     19 * @port: identifier (value of reg property) of a port this endpoint belongs to
     20 * @id: identifier (value of reg property) of this endpoint
     21 * @local_node: pointer to device_node of this endpoint
     22 */
     23struct of_endpoint {
     24	unsigned int port;
     25	unsigned int id;
     26	const struct device_node *local_node;
     27};
     28
     29/**
     30 * for_each_endpoint_of_node - iterate over every endpoint in a device node
     31 * @parent: parent device node containing ports and endpoints
     32 * @child: loop variable pointing to the current endpoint node
     33 *
     34 * When breaking out of the loop, of_node_put(child) has to be called manually.
     35 */
     36#define for_each_endpoint_of_node(parent, child) \
     37	for (child = of_graph_get_next_endpoint(parent, NULL); child != NULL; \
     38	     child = of_graph_get_next_endpoint(parent, child))
     39
     40#ifdef CONFIG_OF
     41bool of_graph_is_present(const struct device_node *node);
     42int of_graph_parse_endpoint(const struct device_node *node,
     43				struct of_endpoint *endpoint);
     44int of_graph_get_endpoint_count(const struct device_node *np);
     45struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id);
     46struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
     47					struct device_node *previous);
     48struct device_node *of_graph_get_endpoint_by_regs(
     49		const struct device_node *parent, int port_reg, int reg);
     50struct device_node *of_graph_get_remote_endpoint(
     51					const struct device_node *node);
     52struct device_node *of_graph_get_port_parent(struct device_node *node);
     53struct device_node *of_graph_get_remote_port_parent(
     54					const struct device_node *node);
     55struct device_node *of_graph_get_remote_port(const struct device_node *node);
     56struct device_node *of_graph_get_remote_node(const struct device_node *node,
     57					     u32 port, u32 endpoint);
     58#else
     59
     60static inline bool of_graph_is_present(const struct device_node *node)
     61{
     62	return false;
     63}
     64
     65static inline int of_graph_parse_endpoint(const struct device_node *node,
     66					struct of_endpoint *endpoint)
     67{
     68	return -ENOSYS;
     69}
     70
     71static inline int of_graph_get_endpoint_count(const struct device_node *np)
     72{
     73	return 0;
     74}
     75
     76static inline struct device_node *of_graph_get_port_by_id(
     77					struct device_node *node, u32 id)
     78{
     79	return NULL;
     80}
     81
     82static inline struct device_node *of_graph_get_next_endpoint(
     83					const struct device_node *parent,
     84					struct device_node *previous)
     85{
     86	return NULL;
     87}
     88
     89static inline struct device_node *of_graph_get_endpoint_by_regs(
     90		const struct device_node *parent, int port_reg, int reg)
     91{
     92	return NULL;
     93}
     94
     95static inline struct device_node *of_graph_get_remote_endpoint(
     96					const struct device_node *node)
     97{
     98	return NULL;
     99}
    100
    101static inline struct device_node *of_graph_get_port_parent(
    102	struct device_node *node)
    103{
    104	return NULL;
    105}
    106
    107static inline struct device_node *of_graph_get_remote_port_parent(
    108					const struct device_node *node)
    109{
    110	return NULL;
    111}
    112
    113static inline struct device_node *of_graph_get_remote_port(
    114					const struct device_node *node)
    115{
    116	return NULL;
    117}
    118static inline struct device_node *of_graph_get_remote_node(
    119					const struct device_node *node,
    120					u32 port, u32 endpoint)
    121{
    122	return NULL;
    123}
    124
    125#endif /* CONFIG_OF */
    126
    127#endif /* __LINUX_OF_GRAPH_H */