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/* dma.c: PCI and SBUS DMA accessors for 32-bit sparc.
*
* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <linux/mm.h>
#ifdef CONFIG_PCI
#include <linux/pci.h>
#endif
#include "dma.h"
int dma_supported(struct device *dev, u64 mask)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type)
return pci_dma_supported(to_pci_dev(dev), mask);
#endif
return 0;
}
EXPORT_SYMBOL(dma_supported);
int dma_set_mask(struct device *dev, u64 dma_mask)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type)
return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
#endif
return -EOPNOTSUPP;
}
EXPORT_SYMBOL(dma_set_mask);
void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type)
return pci_alloc_consistent(to_pci_dev(dev), size, dma_handle);
#endif
return sbus_alloc_consistent(dev, size, dma_handle);
}
EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_free_consistent(to_pci_dev(dev), size,
cpu_addr, dma_handle);
return;
}
#endif
sbus_free_consistent(dev, size, cpu_addr, dma_handle);
}
EXPORT_SYMBOL(dma_free_coherent);
dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
size_t size, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type)
return pci_map_single(to_pci_dev(dev), cpu_addr,
size, (int)direction);
#endif
return sbus_map_single(dev, cpu_addr, size, (int)direction);
}
EXPORT_SYMBOL(dma_map_single);
void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
size_t size,
enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_unmap_single(to_pci_dev(dev), dma_addr,
size, (int)direction);
return;
}
#endif
sbus_unmap_single(dev, dma_addr, size, (int)direction);
}
EXPORT_SYMBOL(dma_unmap_single);
dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type)
return pci_map_page(to_pci_dev(dev), page, offset,
size, (int)direction);
#endif
return sbus_map_single(dev, page_address(page) + offset,
size, (int)direction);
}
EXPORT_SYMBOL(dma_map_page);
void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
size_t size, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_unmap_page(to_pci_dev(dev), dma_address,
size, (int)direction);
return;
}
#endif
sbus_unmap_single(dev, dma_address, size, (int)direction);
}
EXPORT_SYMBOL(dma_unmap_page);
int dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type)
return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
#endif
return sbus_map_sg(dev, sg, nents, direction);
}
EXPORT_SYMBOL(dma_map_sg);
void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_unmap_sg(to_pci_dev(dev), sg, nents, (int)direction);
return;
}
#endif
sbus_unmap_sg(dev, sg, nents, (int)direction);
}
EXPORT_SYMBOL(dma_unmap_sg);
void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle,
size, (int)direction);
return;
}
#endif
sbus_dma_sync_single_for_cpu(dev, dma_handle, size, (int) direction);
}
EXPORT_SYMBOL(dma_sync_single_for_cpu);
void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle,
size, (int)direction);
return;
}
#endif
sbus_dma_sync_single_for_device(dev, dma_handle, size, (int) direction);
}
EXPORT_SYMBOL(dma_sync_single_for_device);
void dma_sync_single_range_for_cpu(struct device *dev,
dma_addr_t dma_handle,
unsigned long offset,
size_t size,
enum dma_data_direction direction)
{
dma_sync_single_for_cpu(dev, dma_handle+offset, size, direction);
}
EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size,
enum dma_data_direction direction)
{
dma_sync_single_for_device(dev, dma_handle+offset, size, direction);
}
EXPORT_SYMBOL(dma_sync_single_range_for_device);
void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg,
nelems, (int)direction);
return;
}
#endif
BUG();
}
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
void dma_sync_sg_for_device(struct device *dev,
struct scatterlist *sg, int nelems,
enum dma_data_direction direction)
{
#ifdef CONFIG_PCI
if (dev->bus == &pci_bus_type) {
pci_dma_sync_sg_for_device(to_pci_dev(dev), sg,
nelems, (int)direction);
return;
}
#endif
BUG();
}
EXPORT_SYMBOL(dma_sync_sg_for_device);
int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return (dma_addr == DMA_ERROR_CODE);
}
EXPORT_SYMBOL(dma_mapping_error);
int dma_get_cache_alignment(void)
{
return 32;
}
EXPORT_SYMBOL(dma_get_cache_alignment);
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