diff options
| author | Steven J. Hill <Steven.Hill@imgtec.com> | 2013-03-25 22:47:29 +0400 |
|---|---|---|
| committer | Steven J. Hill <Steven.Hill@imgtec.com> | 2013-05-02 01:32:49 +0400 |
| commit | b6d92b4a6bdb880b39789c677b952c53a437028d (patch) | |
| tree | f14d30f02314d75860aa1ed12449410e6659513b /arch/mips/include/asm/dma-coherence.h | |
| parent | c34c09c81d659e13e15947580198fa652af3ca1a (diff) | |
| download | linux-b6d92b4a6bdb880b39789c677b952c53a437028d.tar.xz | |
MIPS: Add option to disable software I/O coherency.
Some MIPS controllers have hardware I/O coherency. This patch
detects those and turns off software coherency. A new kernel
command line option also allows the user to manually turn
software coherency on or off.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Diffstat (limited to 'arch/mips/include/asm/dma-coherence.h')
| -rw-r--r-- | arch/mips/include/asm/dma-coherence.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h new file mode 100644 index 000000000000..242cbb3ca582 --- /dev/null +++ b/arch/mips/include/asm/dma-coherence.h @@ -0,0 +1,15 @@ +/* + * 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 + +extern int coherentio; +extern int hw_coherentio; + +#endif |