mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
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 */
|
|
/*
|
|
* Copyright (C) 2015, Intel Corporation
|
|
* Author: Jiang Liu <jiang.liu@linux.intel.com>
|
|
*/
|
|
#ifndef _LINUX_RESOURCE_EXT_H
|
|
#define _LINUX_RESOURCE_EXT_H
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/slab.h>
|
|
|
|
/* Represent resource window for bridge devices */
|
|
struct resource_win {
|
|
struct resource res; /* In master (CPU) address space */
|
|
resource_size_t offset; /* Translation offset for bridge */
|
|
};
|
|
|
|
/*
|
|
* Common resource list management data structure and interfaces to support
|
|
* ACPI, PNP and PCI host bridge etc.
|
|
*/
|
|
struct resource_entry {
|
|
struct list_head node;
|
|
struct resource *res; /* In master (CPU) address space */
|
|
resource_size_t offset; /* Translation offset for bridge */
|
|
struct resource __res; /* Default storage for res */
|
|
};
|
|
|
|
extern struct resource_entry *
|
|
resource_list_create_entry(struct resource *res, size_t extra_size);
|
|
extern void resource_list_free(struct list_head *head);
|
|
|
|
static inline void resource_list_add(struct resource_entry *entry,
|
|
struct list_head *head)
|
|
{
|
|
list_add(&entry->node, head);
|
|
}
|
|
|
|
static inline void resource_list_add_tail(struct resource_entry *entry,
|
|
struct list_head *head)
|
|
{
|
|
list_add_tail(&entry->node, head);
|
|
}
|
|
|
|
static inline void resource_list_del(struct resource_entry *entry)
|
|
{
|
|
list_del(&entry->node);
|
|
}
|
|
|
|
static inline void resource_list_free_entry(struct resource_entry *entry)
|
|
{
|
|
kfree(entry);
|
|
}
|
|
|
|
static inline void
|
|
resource_list_destroy_entry(struct resource_entry *entry)
|
|
{
|
|
resource_list_del(entry);
|
|
resource_list_free_entry(entry);
|
|
}
|
|
|
|
#define resource_list_for_each_entry(entry, list) \
|
|
list_for_each_entry((entry), (list), node)
|
|
|
|
#define resource_list_for_each_entry_safe(entry, tmp, list) \
|
|
list_for_each_entry_safe((entry), (tmp), (list), node)
|
|
|
|
static inline struct resource_entry *
|
|
resource_list_first_type(struct list_head *list, unsigned long type)
|
|
{
|
|
struct resource_entry *entry;
|
|
|
|
resource_list_for_each_entry(entry, list) {
|
|
if (resource_type(entry->res) == type)
|
|
return entry;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* _LINUX_RESOURCE_EXT_H */
|