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20 lines
456 B
20 lines
456 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_S390_DMA_H |
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#define _ASM_S390_DMA_H |
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#include <asm/io.h> |
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/* |
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* MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated |
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* to DMA. It _is_ used for the s390 memory zone split at 2GB caused |
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* by the 31 bit heritage. |
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*/ |
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#define MAX_DMA_ADDRESS 0x80000000 |
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#ifdef CONFIG_PCI |
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extern int isa_dma_bridge_buggy; |
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#else |
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#define isa_dma_bridge_buggy (0) |
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#endif |
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#endif /* _ASM_S390_DMA_H */
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