forked from mirrors/linux
494f8b10d8
A common pattern is looping over a resource_list just to get a matching entry with a specific type. Add resource_list_first_type() helper which implements this. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2015, Intel Corporation
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* Author: Jiang Liu <jiang.liu@linux.intel.com>
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*/
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#ifndef _LINUX_RESOURCE_EXT_H
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#define _LINUX_RESOURCE_EXT_H
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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/* Represent resource window for bridge devices */
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struct resource_win {
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struct resource res; /* In master (CPU) address space */
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resource_size_t offset; /* Translation offset for bridge */
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};
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/*
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* Common resource list management data structure and interfaces to support
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* ACPI, PNP and PCI host bridge etc.
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*/
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struct resource_entry {
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struct list_head node;
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struct resource *res; /* In master (CPU) address space */
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resource_size_t offset; /* Translation offset for bridge */
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struct resource __res; /* Default storage for res */
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};
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extern struct resource_entry *
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resource_list_create_entry(struct resource *res, size_t extra_size);
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extern void resource_list_free(struct list_head *head);
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static inline void resource_list_add(struct resource_entry *entry,
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struct list_head *head)
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{
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list_add(&entry->node, head);
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}
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static inline void resource_list_add_tail(struct resource_entry *entry,
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struct list_head *head)
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{
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list_add_tail(&entry->node, head);
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}
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static inline void resource_list_del(struct resource_entry *entry)
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{
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list_del(&entry->node);
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}
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static inline void resource_list_free_entry(struct resource_entry *entry)
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{
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kfree(entry);
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}
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static inline void
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resource_list_destroy_entry(struct resource_entry *entry)
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{
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resource_list_del(entry);
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resource_list_free_entry(entry);
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}
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#define resource_list_for_each_entry(entry, list) \
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list_for_each_entry((entry), (list), node)
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#define resource_list_for_each_entry_safe(entry, tmp, list) \
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list_for_each_entry_safe((entry), (tmp), (list), node)
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static inline struct resource_entry *
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resource_list_first_type(struct list_head *list, unsigned long type)
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{
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struct resource_entry *entry;
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resource_list_for_each_entry(entry, list) {
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if (resource_type(entry->res) == type)
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return entry;
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}
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return NULL;
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}
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#endif /* _LINUX_RESOURCE_EXT_H */
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