diff options
Diffstat (limited to 'arch/mips/loongson64/dma.c')
| -rw-r--r-- | arch/mips/loongson64/dma.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/mips/loongson64/dma.c b/arch/mips/loongson64/dma.c index 5e86635f71db..dbfe6e82fddd 100644 --- a/arch/mips/loongson64/dma.c +++ b/arch/mips/loongson64/dma.c @@ -2,21 +2,24 @@ #include <linux/dma-direct.h> #include <linux/init.h> #include <linux/swiotlb.h> +#include <boot_param.h> dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) { /* 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 */ long nid = (paddr >> 44) & 0x3; - return ((nid << 44) ^ paddr) | (nid << 37); + + return ((nid << 44) ^ paddr) | (nid << node_id_offset); } phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr) { /* 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 */ - long nid = (daddr >> 37) & 0x3; - return ((nid << 37) ^ daddr) | (nid << 44); + long nid = (daddr >> node_id_offset) & 0x3; + + return ((nid << node_id_offset) ^ daddr) | (nid << 44); } void __init plat_swiotlb_setup(void) |