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charset="utf-8" Use the generic memcpy_{from,to}io and memset_io functions on the loongarch processor architecture. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - No changes --- arch/loongarch/include/asm/io.h | 10 ---- arch/loongarch/kernel/Makefile | 2 +- arch/loongarch/kernel/io.c | 94 --------------------------------- 3 files changed, 1 insertion(+), 105 deletions(-) delete mode 100644 arch/loongarch/kernel/io.c diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/i= o.h index 5e95a60df180..e77a56eaf906 100644 --- a/arch/loongarch/include/asm/io.h +++ b/arch/loongarch/include/asm/io.h @@ -62,16 +62,6 @@ static inline void __iomem *ioremap_prot(phys_addr_t off= set, unsigned long size, =20 #define mmiowb() wmb() =20 -/* - * String version of I/O memory access operations. - */ -extern void __memset_io(volatile void __iomem *dst, int c, size_t count); -extern void __memcpy_toio(volatile void __iomem *to, const void *from, siz= e_t count); -extern void __memcpy_fromio(void *to, const volatile void __iomem *from, s= ize_t count); -#define memset_io(c, v, l) __memset_io((c), (v), (l)) -#define memcpy_fromio(a, c, l) __memcpy_fromio((a), (c), (l)) -#define memcpy_toio(c, a, l) __memcpy_toio((c), (a), (l)) - #define __io_aw() mmiowb() =20 #ifdef CONFIG_KFENCE diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile index c9bfeda89e40..9497968ee158 100644 --- a/arch/loongarch/kernel/Makefile +++ b/arch/loongarch/kernel/Makefile @@ -8,7 +8,7 @@ OBJECT_FILES_NON_STANDARD_head.o :=3D y extra-y :=3D vmlinux.lds =20 obj-y +=3D head.o cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \ - traps.o irq.o idle.o process.o dma.o mem.o io.o reset.o switch.o \ + traps.o irq.o idle.o process.o dma.o mem.o reset.o switch.o \ elf.o syscall.o signal.o time.o topology.o inst.o ptrace.o vdso.o \ alternative.o unwind.o =20 diff --git a/arch/loongarch/kernel/io.c b/arch/loongarch/kernel/io.c deleted file mode 100644 index cb85bda5a6ad..000000000000 --- a/arch/loongarch/kernel/io.c +++ /dev/null @@ -1,94 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2020-2022 Loongson Technology Corporation Limited - */ -#include -#include -#include - -/* - * Copy data from IO memory space to "real" memory space. - */ -void __memcpy_fromio(void *to, const volatile void __iomem *from, size_t c= ount) -{ - while (count && !IS_ALIGNED((unsigned long)from, 8)) { - *(u8 *)to =3D __raw_readb(from); - from++; - to++; - count--; - } - - while (count >=3D 8) { - *(u64 *)to =3D __raw_readq(from); - from +=3D 8; - to +=3D 8; - count -=3D 8; - } - - while (count) { - *(u8 *)to =3D __raw_readb(from); - from++; - to++; - count--; - } -} -EXPORT_SYMBOL(__memcpy_fromio); - -/* - * Copy data from "real" memory space to IO memory space. - */ -void __memcpy_toio(volatile void __iomem *to, const void *from, size_t cou= nt) -{ - while (count && !IS_ALIGNED((unsigned long)to, 8)) { - __raw_writeb(*(u8 *)from, to); - from++; - to++; - count--; - } - - while (count >=3D 8) { - __raw_writeq(*(u64 *)from, to); - from +=3D 8; - to +=3D 8; - count -=3D 8; - } - - while (count) { - __raw_writeb(*(u8 *)from, to); - from++; - to++; - count--; - } -} -EXPORT_SYMBOL(__memcpy_toio); - -/* - * "memset" on IO memory space. - */ -void __memset_io(volatile void __iomem *dst, int c, size_t count) -{ - u64 qc =3D (u8)c; - - qc |=3D qc << 8; - qc |=3D qc << 16; - qc |=3D qc << 32; - - while (count && !IS_ALIGNED((unsigned long)dst, 8)) { - __raw_writeb(c, dst); - dst++; - count--; - } - - while (count >=3D 8) { - __raw_writeq(qc, dst); - dst +=3D 8; - count -=3D 8; - } - - while (count) { - __raw_writeb(c, dst); - dst++; - count--; - } -} -EXPORT_SYMBOL(__memset_io); --=20 2.34.1