blob: 55c2f7db9cbd46c509e14354f67968e8b93ff705 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
#define _POWERPC_SYSDEV_MSI_BITMAP_H
/*
* Copyright 2008, Michael Ellerman, IBM Corporation.
*/
#include <linux/of.h>
#include <asm/irq.h>
struct msi_bitmap {
struct device_node *of_node;
unsigned long *bitmap;
spinlock_t lock;
unsigned int irq_count;
bool bitmap_from_slab;
};
int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
unsigned int num);
void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
struct device_node *of_node);
void msi_bitmap_free(struct msi_bitmap *bmp);
#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */
|
