Commit 8315a3c1 authored by Hongchen Zhang's avatar Hongchen Zhang
Browse files

LoongArch: fix dma-direct.h not found 

LoongArch inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IAZ2YN


CVE: NA

--------------------------------

This patch fix the compile error: dma-direct.h not found

Fixes: 90d2bbc1 ("LoongArch: use arch specific phys_to_dma")
Signed-off-by: default avatarHongchen Zhang <zhanghongchen@loongson.cn>
parent 9a2058ed

arch/loongarch/include/asm/dma-direct.h

0 → 100644
+21 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _ASM_LOONGARCH_DMA_DIRECT_H

#define _ASM_LOONGARCH_DMA_DIRECT_H



extern int node_id_offset;



static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)

{

	long nid = (paddr >> 44) & 0xf;



	return ((nid << 44) ^ paddr) | (nid << node_id_offset);

}



static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)

{

	long nid = (daddr >> node_id_offset) & 0xf;



	return ((nid << node_id_offset) ^ daddr) | (nid << 44);

}



#endif /* _ASM_LOONGARCH_DMA_DIRECT_H */

arch/loongarch/kernel/dma.c

+2 −15
Original line number Diff line number Diff line
@@ -11,21 +11,8 @@ 
 * 48bit physical address space and embed it into 40bit.

 */



static int node_id_offset;



dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)

{

	long nid = (paddr >> 44) & 0xf;



	return ((nid << 44) ^ paddr) | (nid << node_id_offset);

}



phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)

{

	long nid = (daddr >> node_id_offset) & 0xf;



	return ((nid << node_id_offset) ^ daddr) | (nid << 44);

}

int node_id_offset;

EXPORT_SYMBOL_GPL(node_id_offset);



void acpi_arch_dma_setup(struct device *dev)

{