| Michael Ellerman | 7e30286 | 2008-08-06 09:10:01 +1000 | [diff] [blame] | 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 | |
| 17 | struct msi_bitmap { |
| 18 | struct device_node *of_node; |
| 19 | unsigned long *bitmap; |
| 20 | spinlock_t lock; |
| 21 | unsigned int irq_count; |
| 22 | }; |
| 23 | |
| 24 | int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num); |
| 25 | void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, |
| 26 | unsigned int num); |
| 27 | void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq); |
| 28 | |
| 29 | int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp); |
| 30 | |
| 31 | int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, |
| 32 | struct device_node *of_node); |
| 33 | void msi_bitmap_free(struct msi_bitmap *bmp); |
| 34 | |
| 35 | #endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */ |