diff options
Diffstat (limited to 'arch/mips/loongson64/common')
| -rw-r--r-- | arch/mips/loongson64/common/Makefile | 5 | ||||
| -rw-r--r-- | arch/mips/loongson64/common/dma-swiotlb.c | 33 |
2 files changed, 0 insertions, 38 deletions
diff --git a/arch/mips/loongson64/common/Makefile b/arch/mips/loongson64/common/Makefile index 8235ac7eac95..684624f61f5a 100644 --- a/arch/mips/loongson64/common/Makefile +++ b/arch/mips/loongson64/common/Makefile @@ -25,8 +25,3 @@ obj-$(CONFIG_CS5536) += cs5536/ # obj-$(CONFIG_SUSPEND) += pm.o - -# -# Big Memory (SWIOTLB) Support -# -obj-$(CONFIG_SWIOTLB) += dma-swiotlb.o diff --git a/arch/mips/loongson64/common/dma-swiotlb.c b/arch/mips/loongson64/common/dma-swiotlb.c deleted file mode 100644 index a4f554bf1232..000000000000 --- a/arch/mips/loongson64/common/dma-swiotlb.c +++ /dev/null @@ -1,33 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/dma-direct.h> -#include <linux/init.h> -#include <linux/swiotlb.h> - -dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) -{ - long nid; -#ifdef CONFIG_PHYS48_TO_HT40 - /* We extract 2bit node id (bit 44~47, only bit 44~45 used now) from - * Loongson-3's 48bit address space and embed it into 40bit */ - nid = (paddr >> 44) & 0x3; - paddr = ((nid << 44) ^ paddr) | (nid << 37); -#endif - return paddr; -} - -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr) -{ - long nid; -#ifdef CONFIG_PHYS48_TO_HT40 - /* We extract 2bit node id (bit 44~47, only bit 44~45 used now) from - * Loongson-3's 48bit address space and embed it into 40bit */ - nid = (daddr >> 37) & 0x3; - daddr = ((nid << 37) ^ daddr) | (nid << 44); -#endif - return daddr; -} - -void __init plat_swiotlb_setup(void) -{ - swiotlb_init(1); -} |
