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Diffstat (limited to 'arch/mips/include/asm/dma-coherence.h')
-rw-r--r--arch/mips/include/asm/dma-coherence.h16
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h
index bc5e85d579e6..72d0eab02afc 100644
--- a/arch/mips/include/asm/dma-coherence.h
+++ b/arch/mips/include/asm/dma-coherence.h
@@ -9,14 +9,22 @@
#ifndef __ASM_DMA_COHERENCE_H
#define __ASM_DMA_COHERENCE_H
-#ifdef CONFIG_DMA_MAYBE_COHERENT
-extern int coherentio;
+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 1
+#define coherentio IO_COHERENCE_ENABLED
#else
-#define coherentio 0
+#define coherentio IO_COHERENCE_DISABLED
#endif
#define hw_coherentio 0
#endif /* CONFIG_DMA_MAYBE_COHERENT */