mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 17:36:57 +07:00
ff97ba6d2f
Completely unused function - remove it. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
143 lines
3.6 KiB
C
143 lines
3.6 KiB
C
/*
|
|
* Implements the generic device dma API for microblaze and the pci
|
|
*
|
|
* Copyright (C) 2009-2010 Michal Simek <monstr@monstr.eu>
|
|
* Copyright (C) 2009-2010 PetaLogix
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License. See the file COPYING in the main directory of this
|
|
* archive for more details.
|
|
*
|
|
* This file is base on powerpc and x86 dma-mapping.h versions
|
|
* Copyright (C) 2004 IBM
|
|
*/
|
|
|
|
#ifndef _ASM_MICROBLAZE_DMA_MAPPING_H
|
|
#define _ASM_MICROBLAZE_DMA_MAPPING_H
|
|
|
|
/*
|
|
* See Documentation/DMA-API-HOWTO.txt and
|
|
* Documentation/DMA-API.txt for documentation.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/cache.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/dma-debug.h>
|
|
#include <linux/dma-attrs.h>
|
|
#include <asm/io.h>
|
|
#include <asm-generic/dma-coherent.h>
|
|
#include <asm/cacheflush.h>
|
|
|
|
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
|
|
|
|
#define __dma_alloc_coherent(dev, gfp, size, handle) NULL
|
|
#define __dma_free_coherent(size, addr) ((void)0)
|
|
|
|
/*
|
|
* Available generic sets of operations
|
|
*/
|
|
extern struct dma_map_ops dma_direct_ops;
|
|
|
|
static inline struct dma_map_ops *get_dma_ops(struct device *dev)
|
|
{
|
|
return &dma_direct_ops;
|
|
}
|
|
|
|
static inline int dma_supported(struct device *dev, u64 mask)
|
|
{
|
|
struct dma_map_ops *ops = get_dma_ops(dev);
|
|
|
|
if (unlikely(!ops))
|
|
return 0;
|
|
if (!ops->dma_supported)
|
|
return 1;
|
|
return ops->dma_supported(dev, mask);
|
|
}
|
|
|
|
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
|
|
{
|
|
struct dma_map_ops *ops = get_dma_ops(dev);
|
|
|
|
if (unlikely(ops == NULL))
|
|
return -EIO;
|
|
if (ops->set_dma_mask)
|
|
return ops->set_dma_mask(dev, dma_mask);
|
|
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
|
|
return -EIO;
|
|
*dev->dma_mask = dma_mask;
|
|
return 0;
|
|
}
|
|
|
|
#include <asm-generic/dma-mapping-common.h>
|
|
|
|
static inline void __dma_sync(unsigned long paddr,
|
|
size_t size, enum dma_data_direction direction)
|
|
{
|
|
switch (direction) {
|
|
case DMA_TO_DEVICE:
|
|
case DMA_BIDIRECTIONAL:
|
|
flush_dcache_range(paddr, paddr + size);
|
|
break;
|
|
case DMA_FROM_DEVICE:
|
|
invalidate_dcache_range(paddr, paddr + size);
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
|
{
|
|
struct dma_map_ops *ops = get_dma_ops(dev);
|
|
|
|
debug_dma_mapping_error(dev, dma_addr);
|
|
if (ops->mapping_error)
|
|
return ops->mapping_error(dev, dma_addr);
|
|
|
|
return (dma_addr == DMA_ERROR_CODE);
|
|
}
|
|
|
|
#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)
|
|
|
|
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
|
|
|
|
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
|
|
dma_addr_t *dma_handle, gfp_t flag,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
struct dma_map_ops *ops = get_dma_ops(dev);
|
|
void *memory;
|
|
|
|
BUG_ON(!ops);
|
|
|
|
memory = ops->alloc(dev, size, dma_handle, flag, attrs);
|
|
|
|
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
|
|
return memory;
|
|
}
|
|
|
|
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d, s, c, h, NULL)
|
|
|
|
static inline void dma_free_attrs(struct device *dev, size_t size,
|
|
void *cpu_addr, dma_addr_t dma_handle,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
struct dma_map_ops *ops = get_dma_ops(dev);
|
|
|
|
BUG_ON(!ops);
|
|
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
|
|
ops->free(dev, size, cpu_addr, dma_handle, attrs);
|
|
}
|
|
|
|
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
BUG_ON(direction == DMA_NONE);
|
|
__dma_sync(virt_to_phys(vaddr), size, (int)direction);
|
|
}
|
|
|
|
#endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */
|