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author | Paul Mackerras <paulus@samba.org> | 2005-11-14 17:30:17 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2005-11-14 17:30:17 +1100 |
commit | 7568cb4ef6c507164b65b01f972a3bd026898ae1 (patch) | |
tree | ba608f4c84d8765d5a1491c345f6dc265b5ec4ea /arch/powerpc/kernel/dma_64.c | |
parent | c55377ee73f6efeb373ae06f6e918d87660b4852 (diff) | |
download | linux-7568cb4ef6c507164b65b01f972a3bd026898ae1.tar.gz linux-7568cb4ef6c507164b65b01f972a3bd026898ae1.tar.bz2 linux-7568cb4ef6c507164b65b01f972a3bd026898ae1.zip |
powerpc: Move most remaining ppc64 files over to arch/powerpc
Also deletes files in arch/ppc64 that are no longer used now that
we don't compile with ARCH=ppc64 any more.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/dma_64.c')
-rw-r--r-- | arch/powerpc/kernel/dma_64.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c new file mode 100644 index 000000000000..7c3419656ccc --- /dev/null +++ b/arch/powerpc/kernel/dma_64.c @@ -0,0 +1,151 @@ +/* + * Copyright (C) 2004 IBM Corporation + * + * Implements the generic device dma API for ppc64. Handles + * the pci and vio busses + */ + +#include <linux/device.h> +#include <linux/dma-mapping.h> +/* Include the busses we support */ +#include <linux/pci.h> +#include <asm/vio.h> +#include <asm/scatterlist.h> +#include <asm/bug.h> + +static struct dma_mapping_ops *get_dma_ops(struct device *dev) +{ +#ifdef CONFIG_PCI + if (dev->bus == &pci_bus_type) + return &pci_dma_ops; +#endif +#ifdef CONFIG_IBMVIO + if (dev->bus == &vio_bus_type) + return &vio_dma_ops; +#endif + return NULL; +} + +int dma_supported(struct device *dev, u64 mask) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + return dma_ops->dma_supported(dev, mask); + BUG(); + 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 +#ifdef CONFIG_IBMVIO + if (dev->bus == &vio_bus_type) + return -EIO; +#endif /* CONFIG_IBMVIO */ + BUG(); + return 0; +} +EXPORT_SYMBOL(dma_set_mask); + +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + return dma_ops->alloc_coherent(dev, size, dma_handle, flag); + BUG(); + return NULL; +} +EXPORT_SYMBOL(dma_alloc_coherent); + +void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_handle) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); + else + BUG(); +} +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) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + return dma_ops->map_single(dev, cpu_addr, size, direction); + BUG(); + return (dma_addr_t)0; +} +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) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + dma_ops->unmap_single(dev, dma_addr, size, direction); + else + BUG(); +} +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) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + return dma_ops->map_single(dev, + (page_address(page) + offset), size, direction); + BUG(); + return (dma_addr_t)0; +} +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) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + dma_ops->unmap_single(dev, dma_address, size, direction); + else + BUG(); +} +EXPORT_SYMBOL(dma_unmap_page); + +int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + return dma_ops->map_sg(dev, sg, nents, direction); + BUG(); + return 0; +} +EXPORT_SYMBOL(dma_map_sg); + +void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, + enum dma_data_direction direction) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + if (dma_ops) + dma_ops->unmap_sg(dev, sg, nhwentries, direction); + else + BUG(); +} +EXPORT_SYMBOL(dma_unmap_sg); |