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MIPS: Convert DMA to use dma-mapping-common.h

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Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations
and establish a default get_dma_ops() that forwards all operations to the
existing code.

Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing
DMA operations to be overridden on a per device basis.  Currently this is
never filled in, so the default dma_map_ops are used.  A follow-on patch
sets this for Octeon PCI devices.

Also initialize the dma_debug system as it is now used if it is configured.

Includes fixes by Kevin Cernekee <cernekee@gmail.com>.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1637/
Patchwork: http://patchwork.linux-mips.org/patch/1678/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney
2010-10-01 13:27:32 -07:00
committed by Ralf Baechle
parent 43e4f7ae4b
commit 48e1fd5a81
8 changed files with 138 additions and 155 deletions
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15
arch/mips/include/asm/device.h
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@@ -3,4 +3,17 @@
*
* This file is released under the GPLv2
*/
#include <asm-generic/device.h>
#ifndef _ASM_MIPS_DEVICE_H
#define _ASM_MIPS_DEVICE_H
struct dma_map_ops;
struct dev_archdata {
/* DMA operations on that device */
struct dma_map_ops *dma_ops;
};
struct pdev_archdata {
};
#endif /* _ASM_MIPS_DEVICE_H*/