| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | |
| 12 | struct 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 | |
| 20 | int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num); |
| 21 | void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, |
| 22 | unsigned int num); |
| 23 | void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq); |
| 24 | |
| 25 | int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp); |
| 26 | |
| 27 | int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, |
| 28 | struct device_node *of_node); |
| 29 | void msi_bitmap_free(struct msi_bitmap *bmp); |
| 30 | |
| 31 | #endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */ |