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From: Marc Kleine-Budde <mkl@pengutronix.de>
To: sha@pengutronix.de
Cc: barebox@lists.infradead.org
Subject: [PATCH v2 2/6] blackfin, mips, openrisc, ppc, sandbox, x86: add generic dma_alloc, dma_free inlines
Date: Wed, 20 Jun 2012 13:57:31 +0200	[thread overview]
Message-ID: <1340193455-2229-3-git-send-email-mkl@pengutronix.de> (raw)
In-Reply-To: <1340193455-2229-1-git-send-email-mkl@pengutronix.de>

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@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@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@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@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@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@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@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@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


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  parent reply	other threads:[~2012-06-20 11:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-20 11:57 [PATCH v2 0/6] fix dma memory allocations, add dma_alloc/dma_free Marc Kleine-Budde
2012-06-20 11:57 ` [PATCH v2 1/6] ARM mmu: don't use CONFIG_MMU to disable mmu code, there are static inline versions Marc Kleine-Budde
2012-06-20 11:57 ` Marc Kleine-Budde [this message]
2012-06-20 11:57 ` [PATCH v2 3/6] nios: add dma_alloc, asm/dma.h Marc Kleine-Budde
2012-06-20 11:57 ` [PATCH v2 4/6] ARM mmu: add dma_alloc Marc Kleine-Budde
2012-06-20 11:57 ` [PATCH v2 5/6] USB gadget fsl: request cacheline aligned buffer Marc Kleine-Budde
2012-06-20 11:57 ` [PATCH v2 6/6] USB gadget: Fix dma memory allocations Marc Kleine-Budde

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