[PATCH v2 2/6] blackfin, mips, openrisc, ppc, sandbox, x86: add generic dma_alloc, dma_free inlines

[Marc Kleine-Budde]

Some drivers call dma_inv_range() on buffers, on arm these buffers must
be cache line aligned. This patch introduces a generic dma_alloc,
dma_free. Archs can implement in their own functions in "asm/dma.h" and add a:

	#define dma_alloc dma_alloc
	#define dma_free dma_free

On all other archs the generic versions, which translate into xmalloc
and free are used.

Signed-off-by: Marc Kleine-Budde <mkl at pengutronix.de>
---
 arch/blackfin/include/asm/dma.h |   13 +++++++++++++
 arch/mips/include/asm/dma.h     |   13 +++++++++++++
 arch/openrisc/include/asm/dma.h |   13 +++++++++++++
 arch/ppc/include/asm/dma.h      |   13 +++++++++++++
 arch/sandbox/include/asm/dma.h  |   13 +++++++++++++
 arch/x86/include/asm/dma.h      |   13 +++++++++++++
 include/dma.h                   |   30 ++++++++++++++++++++++++++++++
 7 files changed, 108 insertions(+)
 create mode 100644 arch/blackfin/include/asm/dma.h
 create mode 100644 arch/mips/include/asm/dma.h
 create mode 100644 arch/openrisc/include/asm/dma.h
 create mode 100644 arch/ppc/include/asm/dma.h
 create mode 100644 arch/sandbox/include/asm/dma.h
 create mode 100644 arch/x86/include/asm/dma.h
 create mode 100644 include/dma.h

diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h
new file mode 100644
index 0000000..27d269f
--- /dev/null
+++ b/arch/blackfin/include/asm/dma.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __ASM_DMA_H
+#define __ASM_DMA_H
+
+/* empty */
+
+#endif /* __ASM_DMA_H */
diff --git a/arch/mips/include/asm/dma.h b/arch/mips/include/asm/dma.h
new file mode 100644
index 0000000..27d269f
--- /dev/null
+++ b/arch/mips/include/asm/dma.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __ASM_DMA_H
+#define __ASM_DMA_H
+
+/* empty */
+
+#endif /* __ASM_DMA_H */
diff --git a/arch/openrisc/include/asm/dma.h b/arch/openrisc/include/asm/dma.h
new file mode 100644
index 0000000..27d269f
--- /dev/null
+++ b/arch/openrisc/include/asm/dma.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __ASM_DMA_H
+#define __ASM_DMA_H
+
+/* empty */
+
+#endif /* __ASM_DMA_H */
diff --git a/arch/ppc/include/asm/dma.h b/arch/ppc/include/asm/dma.h
new file mode 100644
index 0000000..27d269f
--- /dev/null
+++ b/arch/ppc/include/asm/dma.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __ASM_DMA_H
+#define __ASM_DMA_H
+
+/* empty */
+
+#endif /* __ASM_DMA_H */
diff --git a/arch/sandbox/include/asm/dma.h b/arch/sandbox/include/asm/dma.h
new file mode 100644
index 0000000..4595367
--- /dev/null
+++ b/arch/sandbox/include/asm/dma.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __ASM_DMA_H
+#define __ASM_DMA_H
+
+/* empty*/
+
+#endif /* __ASM_DMA_H */
diff --git a/arch/x86/include/asm/dma.h b/arch/x86/include/asm/dma.h
new file mode 100644
index 0000000..27d269f
--- /dev/null
+++ b/arch/x86/include/asm/dma.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __ASM_DMA_H
+#define __ASM_DMA_H
+
+/* empty */
+
+#endif /* __ASM_DMA_H */
diff --git a/include/dma.h b/include/dma.h
new file mode 100644
index 0000000..899f831
--- /dev/null
+++ b/include/dma.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2012 by Marc Kleine-Budde <mkl at pengutronix.de>
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#ifndef __DMA_H
+#define __DMA_H
+
+#include <malloc.h>
+#include <xfuncs.h>
+
+#include <asm/dma.h>
+
+#ifndef dma_alloc
+static inline void *dma_alloc(size_t size)
+{
+	return xmalloc(size);
+}
+#endif
+
+#ifndef dma_free
+static inline void dma_free(void *mem)
+{
+	free(mem);
+}
+#endif
+
+#endif /* __DMA_H */
-- 
1.7.10