32 lines
867 B
C
32 lines
867 B
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
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#define _POWERPC_SYSDEV_MSI_BITMAP_H
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/*
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* Copyright 2008, Michael Ellerman, IBM Corporation.
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*/
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#include <linux/of.h>
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#include <asm/irq.h>
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struct msi_bitmap {
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struct device_node *of_node;
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unsigned long *bitmap;
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spinlock_t lock;
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unsigned int irq_count;
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bool bitmap_from_slab;
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};
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int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
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void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
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unsigned int num);
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void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
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int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
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int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
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struct device_node *of_node);
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void msi_bitmap_free(struct msi_bitmap *bmp);
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#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */
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