From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/s390/include/asm/dma.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 arch/s390/include/asm/dma.h (limited to 'arch/s390/include/asm/dma.h') diff --git a/arch/s390/include/asm/dma.h b/arch/s390/include/asm/dma.h new file mode 100644 index 000000000..6f26f35d4 --- /dev/null +++ b/arch/s390/include/asm/dma.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_S390_DMA_H +#define _ASM_S390_DMA_H + +#include + +/* + * MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated + * to DMA. It _is_ used for the s390 memory zone split at 2GB caused + * by the 31 bit heritage. + */ +#define MAX_DMA_ADDRESS 0x80000000 + +#ifdef CONFIG_PCI +extern int isa_dma_bridge_buggy; +#else +#define isa_dma_bridge_buggy (0) +#endif + +#endif /* _ASM_S390_DMA_H */ -- cgit v1.2.3