| /* | |
| * This file is subject to the terms and conditions of the GNU General Public | |
| * License. See the file "COPYING" in the main directory of this archive | |
| * for more details. | |
| * | |
| * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> | |
| * | |
| */ | |
| #ifndef __ASM_DMA_COHERENCE_H | |
| #define __ASM_DMA_COHERENCE_H | |
| enum coherent_io_user_state { | |
| IO_COHERENCE_DEFAULT, | |
| IO_COHERENCE_ENABLED, | |
| IO_COHERENCE_DISABLED, | |
| }; | |
| #if defined(CONFIG_DMA_PERDEV_COHERENT) | |
| /* Don't provide (hw_)coherentio to avoid misuse */ | |
| #elif defined(CONFIG_DMA_MAYBE_COHERENT) | |
| extern enum coherent_io_user_state coherentio; | |
| extern int hw_coherentio; | |
| #else | |
| #ifdef CONFIG_DMA_COHERENT | |
| #define coherentio IO_COHERENCE_ENABLED | |
| #else | |
| #define coherentio IO_COHERENCE_DISABLED | |
| #endif | |
| #define hw_coherentio 0 | |
| #endif /* CONFIG_DMA_MAYBE_COHERENT */ | |
| #endif |