4d9b977ca6
This patch introduces a global pointer, dma_ops, which points to an appropriate dma_mapping_ops that the kernel should use. This is a common way to handle multiple dma_mapping_ops (X86, POWER, and SPARC). dma_ops is set in platform_dma_init. We also set it by hand where machvec_init is callev via subsys_initcall. - IA64_DIG_VTD uses vtd_dma_ops. - IA64_HP_ZX1 uses sba_dma_ops. - IA64_HP_ZX1_SWIOTLB uses hwsw_dma_ops. - IA64_SGI_SN2 uses sn_dma_ops. - The rest use swiotlb_dma_ops. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
38 lines
1.6 KiB
C
38 lines
1.6 KiB
C
#ifndef _ASM_IA64_MACHVEC_HPZX1_h
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#define _ASM_IA64_MACHVEC_HPZX1_h
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extern ia64_mv_setup_t dig_setup;
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extern ia64_mv_dma_init sba_dma_init;
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extern ia64_mv_dma_alloc_coherent sba_alloc_coherent;
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extern ia64_mv_dma_free_coherent sba_free_coherent;
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extern ia64_mv_dma_map_single_attrs sba_map_single_attrs;
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extern ia64_mv_dma_unmap_single_attrs sba_unmap_single_attrs;
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extern ia64_mv_dma_map_sg_attrs sba_map_sg_attrs;
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extern ia64_mv_dma_unmap_sg_attrs sba_unmap_sg_attrs;
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extern ia64_mv_dma_supported sba_dma_supported;
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extern ia64_mv_dma_mapping_error sba_dma_mapping_error;
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/*
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* This stuff has dual use!
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*
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* For a generic kernel, the macros are used to initialize the
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* platform's machvec structure. When compiling a non-generic kernel,
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* the macros are used directly.
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*/
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#define platform_name "hpzx1"
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#define platform_setup dig_setup
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#define platform_dma_init sba_dma_init
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#define platform_dma_alloc_coherent sba_alloc_coherent
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#define platform_dma_free_coherent sba_free_coherent
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#define platform_dma_map_single_attrs sba_map_single_attrs
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#define platform_dma_unmap_single_attrs sba_unmap_single_attrs
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#define platform_dma_map_sg_attrs sba_map_sg_attrs
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#define platform_dma_unmap_sg_attrs sba_unmap_sg_attrs
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#define platform_dma_sync_single_for_cpu machvec_dma_sync_single
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#define platform_dma_sync_sg_for_cpu machvec_dma_sync_sg
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#define platform_dma_sync_single_for_device machvec_dma_sync_single
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#define platform_dma_sync_sg_for_device machvec_dma_sync_sg
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#define platform_dma_supported sba_dma_supported
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#define platform_dma_mapping_error sba_dma_mapping_error
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#endif /* _ASM_IA64_MACHVEC_HPZX1_h */
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