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fec777c385
The generic DMA-direct (CONFIG_DMA_DIRECT_OPS=y) implementation is now functionally equivalent to the x86 nommu dma_map implementation, so switch over to using it. That includes switching from using x86_dma_supported in various IOMMU drivers to use dma_direct_supported instead, which provides the same functionality. Tested-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Joerg Roedel <joro@8bytes.org> Cc: Jon Mason <jdmason@kudzu.us> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Muli Ben-Yehuda <mulix@mulix.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20180319103826.12853-4-hch@lst.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
13 lines
291 B
C
13 lines
291 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_IOMMU_H
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#define _ASM_X86_IOMMU_H
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extern int force_iommu, no_iommu;
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extern int iommu_detected;
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extern int iommu_pass_through;
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/* 10 seconds */
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#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
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#endif /* _ASM_X86_IOMMU_H */
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