18180651fd
c6x/allmodconfig (assumed): drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_mmap’: drivers/media/v4l2-core/videobuf2-dma-contig.c:204: error: implicit declaration of function ‘dma_mmap_coherent’ drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_get_base_sgt’: drivers/media/v4l2-core/videobuf2-dma-contig.c:387: error: implicit declaration of function ‘dma_get_sgtable’ For architectures using dma_map_ops, dma_mmap_coherent() and dma_get_sgtable() are provided in <asm-generic/dma-mapping-common.h>. C6x does not use dma_map_ops, hence it should implement them itself. For now, use dummy implementations that just return -EINVAL, until the API has been finalized. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: linux-c6x-dev@linux-c6x.org Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
|
|
* Port on Texas Instruments TMS320C6x architecture
|
|
*
|
|
* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
|
|
* Author: Aurelien Jacquiot <aurelien.jacquiot@ti.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
#ifndef _ASM_C6X_DMA_MAPPING_H
|
|
#define _ASM_C6X_DMA_MAPPING_H
|
|
|
|
#include <linux/dma-debug.h>
|
|
#include <asm-generic/dma-coherent.h>
|
|
|
|
#define dma_supported(d, m) 1
|
|
|
|
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
|
|
{
|
|
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
|
|
return -EIO;
|
|
|
|
*dev->dma_mask = dma_mask;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* DMA errors are defined by all-bits-set in the DMA address.
|
|
*/
|
|
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
|
{
|
|
debug_dma_mapping_error(dev, dma_addr);
|
|
return dma_addr == ~0;
|
|
}
|
|
|
|
extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
|
|
size_t size, enum dma_data_direction dir);
|
|
|
|
extern void dma_unmap_single(struct device *dev, dma_addr_t handle,
|
|
size_t size, enum dma_data_direction dir);
|
|
|
|
extern int dma_map_sg(struct device *dev, struct scatterlist *sglist,
|
|
int nents, enum dma_data_direction direction);
|
|
|
|
extern void dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
|
|
int nents, enum dma_data_direction direction);
|
|
|
|
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
|
|
unsigned long offset, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
dma_addr_t handle;
|
|
|
|
handle = dma_map_single(dev, page_address(page) + offset, size, dir);
|
|
|
|
debug_dma_map_page(dev, page, offset, size, dir, handle, false);
|
|
|
|
return handle;
|
|
}
|
|
|
|
static inline void dma_unmap_page(struct device *dev, dma_addr_t handle,
|
|
size_t size, enum dma_data_direction dir)
|
|
{
|
|
dma_unmap_single(dev, handle, size, dir);
|
|
|
|
debug_dma_unmap_page(dev, handle, size, dir, false);
|
|
}
|
|
|
|
extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
|
|
size_t size, enum dma_data_direction dir);
|
|
|
|
extern void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
|
|
size_t size,
|
|
enum dma_data_direction dir);
|
|
|
|
extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
|
|
int nents, enum dma_data_direction dir);
|
|
|
|
extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
|
|
int nents, enum dma_data_direction dir);
|
|
|
|
extern void coherent_mem_init(u32 start, u32 size);
|
|
extern void *dma_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
|
|
extern void dma_free_coherent(struct device *, size_t, void *, dma_addr_t);
|
|
|
|
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f))
|
|
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h))
|
|
|
|
/* Not supported for now */
|
|
static inline int dma_mmap_coherent(struct device *dev,
|
|
struct vm_area_struct *vma, void *cpu_addr,
|
|
dma_addr_t dma_addr, size_t size)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt,
|
|
void *cpu_addr, dma_addr_t dma_addr,
|
|
size_t size)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
#endif /* _ASM_C6X_DMA_MAPPING_H */
|