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

   1#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
   2#define _POWERPC_SYSDEV_MSI_BITMAP_H
   3
   4/*
   5 * Copyright 2008, Michael Ellerman, IBM Corporation.
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License
   9 * as published by the Free Software Foundation; version 2 of the
  10 * License.
  11 *
  12 */
  13
  14#include <linux/of.h>
  15#include <asm/irq.h>
  16
  17struct msi_bitmap {
  18        struct device_node      *of_node;
  19        unsigned long           *bitmap;
  20        spinlock_t              lock;
  21        unsigned int            irq_count;
  22        bool                    bitmap_from_slab;
  23};
  24
  25int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
  26void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
  27                            unsigned int num);
  28void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
  29
  30int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
  31
  32int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
  33                     struct device_node *of_node);
  34void msi_bitmap_free(struct msi_bitmap *bmp);
  35
  36#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */
  37