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| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-08-06 10:19:33 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-08-12 08:10:11 +0300 |
| commit | 57fc7323a8e7c2e7c1d5795ab63cb3ffea3cfdfb (patch) | |
| tree | 3c0499d025c9634137c6a34229f2fabae2295a5e /arch/loongarch/include/asm/dma.h | |
| parent | e9e7ff16d7f098f6fa9394e9d2b191c01ba0d5f6 (diff) | |
| download | linux-57fc7323a8e7c2e7c1d5795ab63cb3ffea3cfdfb.tar.xz | |
LoongArch: Add PCI controller support
Loongson64 based systems are PC-like systems which use PCI/PCIe as its
I/O bus, This patch adds the PCI host controller support for LoongArch.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include/asm/dma.h')
| -rw-r--r-- | arch/loongarch/include/asm/dma.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/dma.h b/arch/loongarch/include/asm/dma.h new file mode 100644 index 000000000000..1a8866319fe2 --- /dev/null +++ b/arch/loongarch/include/asm/dma.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ +#ifndef __ASM_DMA_H +#define __ASM_DMA_H + +#define MAX_DMA_ADDRESS PAGE_OFFSET +#define MAX_DMA32_PFN (1UL << (32 - PAGE_SHIFT)) + +#endif |