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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9b6eccfccb
This updates the ia64 iommu/pci dma mappers to sg chaining. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
#ifndef _ASM_IA64_DMA_MAPPING_H
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#define _ASM_IA64_DMA_MAPPING_H
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/*
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* Copyright (C) 2003-2004 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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#include <asm/machvec.h>
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#include <linux/scatterlist.h>
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#define dma_alloc_coherent platform_dma_alloc_coherent
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/* coherent mem. is cheap */
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static inline void *
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dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
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gfp_t flag)
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{
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return dma_alloc_coherent(dev, size, dma_handle, flag);
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}
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#define dma_free_coherent platform_dma_free_coherent
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static inline void
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dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
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dma_addr_t dma_handle)
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{
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dma_free_coherent(dev, size, cpu_addr, dma_handle);
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}
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#define dma_map_single platform_dma_map_single
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#define dma_map_sg platform_dma_map_sg
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#define dma_unmap_single platform_dma_unmap_single
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#define dma_unmap_sg platform_dma_unmap_sg
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#define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
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#define dma_sync_sg_for_cpu platform_dma_sync_sg_for_cpu
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#define dma_sync_single_for_device platform_dma_sync_single_for_device
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#define dma_sync_sg_for_device platform_dma_sync_sg_for_device
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#define dma_mapping_error platform_dma_mapping_error
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#define dma_map_page(dev, pg, off, size, dir) \
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dma_map_single(dev, page_address(pg) + (off), (size), (dir))
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#define dma_unmap_page(dev, dma_addr, size, dir) \
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dma_unmap_single(dev, dma_addr, size, dir)
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/*
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* Rest of this file is part of the "Advanced DMA API". Use at your own risk.
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* See Documentation/DMA-API.txt for details.
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*/
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#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \
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dma_sync_single_for_cpu(dev, dma_handle, size, dir)
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#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
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dma_sync_single_for_device(dev, dma_handle, size, dir)
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#define dma_supported platform_dma_supported
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static inline int
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dma_set_mask (struct device *dev, u64 mask)
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{
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if (!dev->dma_mask || !dma_supported(dev, mask))
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return -EIO;
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*dev->dma_mask = mask;
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return 0;
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}
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extern int dma_get_cache_alignment(void);
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static inline void
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dma_cache_sync (struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction dir)
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{
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/*
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* IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
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* ensure that dma_cache_sync() enforces order, hence the mb().
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*/
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mb();
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}
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#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
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#endif /* _ASM_IA64_DMA_MAPPING_H */
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