LXR linux/arch/powerpc/include/asm/msi

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
   3#define _POWERPC_SYSDEV_MSI_BITMAP_H
   4
   5/*
   6 * Copyright 2008, Michael Ellerman, IBM Corporation.
   7 */
   8
   9#include <linux/of.h>
  10#include <asm/irq.h>
  11
  12struct msi_bitmap {
  13        struct device_node      *of_node;
  14        unsigned long           *bitmap;
  15        spinlock_t              lock;
  16        unsigned int            irq_count;
  17        bool                    bitmap_from_slab;
  18};
  19
  20int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
  21void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
  22                            unsigned int num);
  23void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
  24
  25int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
  26
  27int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
  28                     struct device_node *of_node);
  29void msi_bitmap_free(struct msi_bitmap *bmp);
  30
  31#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */
  32