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From: Julian Vetter To: Arnd Bergmann , Russell King , Catalin Marinas , Will Deacon , Guo Ren , Huacai Chen , WANG Xuerui , Andrew Morton , Geert Uytterhoeven , Richard Henderson , Ivan Kokshaysky , Matt Turner , "James E . J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 01/10] Consolidate IO memcpy/memset into iomap_copy.c Date: Mon, 30 Sep 2024 15:23:12 +0200 Message-ID: <20240930132321.2785718-2-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB2707:EE_ X-MS-Office365-Filtering-Correlation-Id: c587103e-6762-412c-95fa-08dce153618b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" Various architectures have almost the same implementations for memcpy_{to,from}io and memset_io functions. So, consolidate them into the existing lib/iomap_copy.c. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - Addressed reviewer comments from David: - Replaced NATIVE_STORE_TYPE and uintptr_t by long - Split the read/write and the {get,put}_unaligned into two different lines for readability - Addressed reviewer comments from Arnd: - Placed "extern" definitions in asm-generic/io.h - Renamed functions from __memcpy_{to,from}io and __memset_io to memcpy_{to,from}io and memset_io - Removed the guarding '#ifndef __memcpy_fromio', etc. --- include/asm-generic/io.h | 58 ++--------------- lib/iomap_copy.c | 133 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 139 insertions(+), 52 deletions(-) diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 80de699bf6af..f14655ed4d9d 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -102,6 +102,12 @@ static inline void log_post_read_mmio(u64 val, u8 widt= h, const volatile void __i =20 #endif /* CONFIG_TRACE_MMIO_ACCESS */ =20 +extern void memcpy_fromio(void *to, const volatile void __iomem *from, + size_t count); +extern void memcpy_toio(volatile void __iomem *to, const void *from, + size_t count); +extern void memset_io(volatile void __iomem *dst, int c, size_t count); + /* * __raw_{read,write}{b,w,l,q}() access memory in native endianness. * @@ -1150,58 +1156,6 @@ static inline void unxlate_dev_mem_ptr(phys_addr_t p= hys, void *addr) } #endif =20 -#ifndef memset_io -#define memset_io memset_io -/** - * memset_io Set a range of I/O memory to a constant value - * @addr: The beginning of the I/O-memory range to set - * @val: The value to set the memory to - * @count: The number of bytes to set - * - * Set a range of I/O memory to a given value. - */ -static inline void memset_io(volatile void __iomem *addr, int value, - size_t size) -{ - memset(__io_virt(addr), value, size); -} -#endif - -#ifndef memcpy_fromio -#define memcpy_fromio memcpy_fromio -/** - * memcpy_fromio Copy a block of data from I/O memory - * @dst: The (RAM) destination for the copy - * @src: The (I/O memory) source for the data - * @count: The number of bytes to copy - * - * Copy a block of data from I/O memory. - */ -static inline void memcpy_fromio(void *buffer, - const volatile void __iomem *addr, - size_t size) -{ - memcpy(buffer, __io_virt(addr), size); -} -#endif - -#ifndef memcpy_toio -#define memcpy_toio memcpy_toio -/** - * memcpy_toio Copy a block of data into I/O memory - * @dst: The (I/O memory) destination for the copy - * @src: The (RAM) source for the data - * @count: The number of bytes to copy - * - * Copy a block of data to I/O memory. - */ -static inline void memcpy_toio(volatile void __iomem *addr, const void *bu= ffer, - size_t size) -{ - memcpy(__io_virt(addr), buffer, size); -} -#endif - extern int devmem_is_allowed(unsigned long pfn); =20 #endif /* __KERNEL__ */ diff --git a/lib/iomap_copy.c b/lib/iomap_copy.c index 2fd5712fb7c0..5567bf8db8bc 100644 --- a/lib/iomap_copy.c +++ b/lib/iomap_copy.c @@ -3,7 +3,11 @@ * Copyright 2006 PathScale, Inc. All Rights Reserved. */ =20 +#include + +#include #include +#include #include =20 /** @@ -76,3 +80,132 @@ void __iowrite64_copy(void __iomem *to, const void *fro= m, size_t count) } EXPORT_SYMBOL_GPL(__iowrite64_copy); #endif + +#ifndef memcpy_fromio +/** + * memcpy_fromio Copy a block of data from I/O memory + * @to: The (RAM) destination for the copy + * @from: The (I/O memory) source for the data + * @count: The number of bytes to copy + * + * Copy a block of data from I/O memory. + */ +void memcpy_fromio(void *to, const volatile void __iomem *from, size_t cou= nt) +{ + while (count && !IS_ALIGNED((long)from, sizeof(long))) { + *(u8 *)to =3D __raw_readb(from); + from++; + to++; + count--; + } + + while (count >=3D sizeof(long)) { +#ifdef CONFIG_64BIT + long val =3D __raw_readq(from); +#else + long val =3D __raw_readl(from); +#endif + put_unaligned(val, (long *)to); + + + from +=3D sizeof(long); + to +=3D sizeof(long); + count -=3D sizeof(long); + } + + while (count) { + *(u8 *)to =3D __raw_readb(from); + from++; + to++; + count--; + } +} +EXPORT_SYMBOL(memcpy_fromio); +#endif + +#ifndef memcpy_toio +/** + * memcpy_toio Copy a block of data into I/O memory + * @to: The (I/O memory) destination for the copy + * @from: The (RAM) source for the data + * @count: The number of bytes to copy + * + * Copy a block of data to I/O memory. + */ +void memcpy_toio(volatile void __iomem *to, const void *from, size_t count) +{ + while (count && !IS_ALIGNED((long)to, sizeof(long))) { + __raw_writeb(*(u8 *)from, to); + from++; + to++; + count--; + } + + while (count >=3D sizeof(long)) { + long val =3D get_unaligned((long *)from); +#ifdef CONFIG_64BIT + __raw_writeq(val, to); +#else + __raw_writel(val, to); +#endif + + from +=3D sizeof(long); + to +=3D sizeof(long); + count -=3D sizeof(long); + } + + while (count) { + __raw_writeb(*(u8 *)from, to); + from++; + to++; + count--; + } +} +EXPORT_SYMBOL(memcpy_toio); +#endif + +#ifndef memset_io +/** + * memset_io Set a range of I/O memory to a constant value + * @dst: The beginning of the I/O-memory range to set + * @c: The value to set the memory to + * @count: The number of bytes to set + * + * Set a range of I/O memory to a given value. + */ +void memset_io(volatile void __iomem *dst, int c, size_t count) +{ + uintptr_t qc =3D (u8)c; 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charset="utf-8" Use the generic memcpy_{from,to}io and memset_io functions on the arm64 processor architecture. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - No changes --- arch/arm64/include/asm/io.h | 11 ----- arch/arm64/kernel/io.c | 87 ------------------------------------- 2 files changed, 98 deletions(-) diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index 41fd90895dfc..9a5d4387e694 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -128,17 +128,6 @@ static __always_inline u64 __raw_readq(const volatile = void __iomem *addr) #define IO_SPACE_LIMIT (PCI_IO_SIZE - 1) #define PCI_IOBASE ((void __iomem *)PCI_IO_START) =20 -/* - * String version of I/O memory access operations. - */ -extern void __memcpy_fromio(void *, const volatile void __iomem *, size_t); -extern void __memcpy_toio(volatile void __iomem *, const void *, size_t); -extern void __memset_io(volatile void __iomem *, int, size_t); - -#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)) - /* * The ARM64 iowrite implementation is intended to support drivers that wa= nt to * use write combining. For instance PCI drivers using write combining wit= h a 64 diff --git a/arch/arm64/kernel/io.c b/arch/arm64/kernel/io.c index ef48089fbfe1..fe86ada23c7d 100644 --- a/arch/arm64/kernel/io.c +++ b/arch/arm64/kernel/io.c @@ -9,34 +9,6 @@ #include #include =20 -/* - * 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); - /* * This generates a memcpy that works on a from/to address which is aligne= d to * bits. Count is in terms of the number of bits sized quantities to copy.= It @@ -78,62 +50,3 @@ void __iowrite32_copy_full(void __iomem *to, const void = *from, size_t count) dgh(); } EXPORT_SYMBOL(__iowrite32_copy_full); - -/* - * 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++; 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charset="utf-8" Use the generic memcpy_{from,to}io and memset_io functions on the csky processor architecture. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - No changes --- arch/csky/include/asm/io.h | 11 ----- arch/csky/kernel/Makefile | 2 +- arch/csky/kernel/io.c | 91 -------------------------------------- 3 files changed, 1 insertion(+), 103 deletions(-) delete mode 100644 arch/csky/kernel/io.c diff --git a/arch/csky/include/asm/io.h b/arch/csky/include/asm/io.h index 4725bb977b0f..ed53f0b47388 100644 --- a/arch/csky/include/asm/io.h +++ b/arch/csky/include/asm/io.h @@ -31,17 +31,6 @@ #define writel(v,c) ({ wmb(); writel_relaxed((v),(c)); mb(); }) #endif =20 -/* - * String version of I/O memory access operations. - */ -extern void __memcpy_fromio(void *, const volatile void __iomem *, size_t); -extern void __memcpy_toio(volatile void __iomem *, const void *, size_t); -extern void __memset_io(volatile void __iomem *, int, size_t); - -#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)) - /* * I/O memory mapping functions. */ diff --git a/arch/csky/kernel/Makefile b/arch/csky/kernel/Makefile index 8a868316b912..de1c3472e8f0 100644 --- a/arch/csky/kernel/Makefile +++ b/arch/csky/kernel/Makefile @@ -2,7 +2,7 @@ extra-y :=3D vmlinux.lds =20 obj-y +=3D head.o entry.o atomic.o signal.o traps.o irq.o time.o vdso.o vd= so/ -obj-y +=3D power.o syscall.o syscall_table.o setup.o io.o +obj-y +=3D power.o syscall.o syscall_table.o setup.o obj-y +=3D process.o cpu-probe.o ptrace.o stacktrace.o obj-y +=3D probes/ =20 diff --git a/arch/csky/kernel/io.c b/arch/csky/kernel/io.c deleted file mode 100644 index 5883f13fa2b1..000000000000 --- a/arch/csky/kernel/io.c +++ /dev/null @@ -1,91 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -#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, 4)) { - *(u8 *)to =3D __raw_readb(from); - from++; - to++; - count--; - } - - while (count >=3D 4) { - *(u32 *)to =3D __raw_readl(from); - from +=3D 4; - to +=3D 4; - count -=3D 4; - } - - 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, 4)) { - __raw_writeb(*(u8 *)from, to); - from++; - to++; - count--; - } - - while (count >=3D 4) { - __raw_writel(*(u32 *)from, to); - from +=3D 4; - to +=3D 4; - count -=3D 4; - } - - 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) -{ - u32 qc =3D (u8)c; - - qc |=3D qc << 8; - qc |=3D qc << 16; - - while (count && !IS_ALIGNED((unsigned long)dst, 4)) { - __raw_writeb(c, dst); 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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); 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Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 05/10] m68k: Align prototypes of IO memcpy/memset Date: Mon, 30 Sep 2024 15:23:16 +0200 Message-ID: <20240930132321.2785718-6-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB2707:EE_ X-MS-Office365-Filtering-Correlation-Id: 7767a78e-5900-4c5d-2f1f-08dce1536495 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" Align the prototypes of the memcpy_{from,to}io and memset_io functions with the new ones from iomap_copy.c. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter Acked-by: Geert Uytterhoeven Reviewed-by: Geert Uytterhoeven --- Changes for v7: - New patch --- arch/m68k/include/asm/kmap.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/m68k/include/asm/kmap.h b/arch/m68k/include/asm/kmap.h index b778f015c917..e459f1911155 100644 --- a/arch/m68k/include/asm/kmap.h +++ b/arch/m68k/include/asm/kmap.h @@ -33,22 +33,22 @@ static inline void __iomem *ioremap_wt(unsigned long ph= ysaddr, } =20 #define memset_io memset_io -static inline void memset_io(volatile void __iomem *addr, unsigned char va= l, - int count) +static inline void memset_io(volatile void __iomem *addr, int val, + size_t count) { __builtin_memset((void __force *) addr, val, count); } =20 #define memcpy_fromio memcpy_fromio static inline void memcpy_fromio(void *dst, const volatile void __iomem *s= rc, - int count) + size_t count) { __builtin_memcpy(dst, (void __force *) src, count); } =20 #define memcpy_toio memcpy_toio static inline void memcpy_toio(volatile void __iomem *dst, const void *src, - int count) + size_t count) { __builtin_memcpy((void __force *) dst, src, count); 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From: Julian Vetter To: Arnd Bergmann , Russell King , Catalin Marinas , Will Deacon , Guo Ren , Huacai Chen , WANG Xuerui , Andrew Morton , Geert Uytterhoeven , Richard Henderson , Ivan Kokshaysky , Matt Turner , "James E . J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 06/10] alpha: Align prototypes of IO memcpy/memset Date: Mon, 30 Sep 2024 15:23:17 +0200 Message-ID: <20240930132321.2785718-7-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB2707:EE_ X-MS-Office365-Filtering-Correlation-Id: 09e94272-bb4f-4aef-97d1-08dce153654d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" Align the prototypes of the memcpy_{from,to}io and memset_io functions with the new ones from iomap_copy.c and remove function declarations, because they are now declared in asm-generic/io.h. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - New patch --- arch/alpha/include/asm/io.h | 6 ++---- arch/alpha/kernel/io.c | 4 ++-- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h index b191d87f89c4..db3a9f41447e 100644 --- a/arch/alpha/include/asm/io.h +++ b/arch/alpha/include/asm/io.h @@ -591,13 +591,11 @@ extern inline u64 readq_relaxed(const volatile void _= _iomem *addr) /* * String version of IO memory access ops: */ -extern void memcpy_fromio(void *, const volatile void __iomem *, long); -extern void memcpy_toio(volatile void __iomem *, const void *, long); extern void _memset_c_io(volatile void __iomem *, unsigned long, long); =20 -static inline void memset_io(volatile void __iomem *addr, u8 c, long len) +static inline void memset_io(volatile void __iomem *dst, int c, size_t cou= nt) { - _memset_c_io(addr, 0x0101010101010101UL * c, len); + _memset_c_io(dst, 0x0101010101010101UL * c, count); } =20 #define __HAVE_ARCH_MEMSETW_IO diff --git a/arch/alpha/kernel/io.c b/arch/alpha/kernel/io.c index c28035d6d1e6..69c06f1b158d 100644 --- a/arch/alpha/kernel/io.c +++ b/arch/alpha/kernel/io.c @@ -481,7 +481,7 @@ EXPORT_SYMBOL(outsl); * Copy data from IO memory space to "real" memory space. * This needs to be optimized. */ -void memcpy_fromio(void *to, const volatile void __iomem *from, long count) +void memcpy_fromio(void *to, const volatile void __iomem *from, size_t cou= nt) { /* Optimize co-aligned transfers. Everything else gets handled a byte at a time. */ @@ -535,7 +535,7 @@ EXPORT_SYMBOL(memcpy_fromio); * Copy data from "real" memory space to IO memory space. * This needs to be optimized. */ -void memcpy_toio(volatile void __iomem *to, const void *from, long count) +void memcpy_toio(volatile void __iomem *to, const void *from, size_t count) { /* Optimize co-aligned transfers. 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From: Julian Vetter To: Arnd Bergmann , Russell King , Catalin Marinas , Will Deacon , Guo Ren , Huacai Chen , WANG Xuerui , Andrew Morton , Geert Uytterhoeven , Richard Henderson , Ivan Kokshaysky , Matt Turner , "James E . J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 07/10] parisc: Align prototypes of IO memcpy/memset Date: Mon, 30 Sep 2024 15:23:18 +0200 Message-ID: <20240930132321.2785718-8-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB2707:EE_ X-MS-Office365-Filtering-Correlation-Id: d1ca20f0-dad7-44d5-440a-08dce1536603 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" Align the prototypes of the memcpy_{from,to}io and memset_io functions with the new ones from iomap_copy.c and remove function declarations, because they are now declared in asm-generic/io.h. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - New patch --- arch/parisc/include/asm/io.h | 3 --- arch/parisc/lib/io.c | 6 +++--- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h index a63190af2f05..5cfaa76bb899 100644 --- a/arch/parisc/include/asm/io.h +++ b/arch/parisc/include/asm/io.h @@ -135,9 +135,6 @@ static inline void gsc_writeq(unsigned long long val, u= nsigned long addr) =20 #define pci_iounmap pci_iounmap =20 -void memset_io(volatile void __iomem *addr, unsigned char val, int count); -void memcpy_fromio(void *dst, const volatile void __iomem *src, int count); -void memcpy_toio(volatile void __iomem *dst, const void *src, int count); #define memset_io memset_io #define memcpy_fromio memcpy_fromio #define memcpy_toio memcpy_toio diff --git a/arch/parisc/lib/io.c b/arch/parisc/lib/io.c index 7c00496b47d4..1e63112ba9c9 100644 --- a/arch/parisc/lib/io.c +++ b/arch/parisc/lib/io.c @@ -16,7 +16,7 @@ * Assumes the device can cope with 32-bit transfers. If it can't, * don't use this function. */ -void memcpy_toio(volatile void __iomem *dst, const void *src, int count) +void memcpy_toio(volatile void __iomem *dst, const void *src, size_t count) { if (((unsigned long)dst & 3) !=3D ((unsigned long)src & 3)) goto bytecopy; @@ -51,7 +51,7 @@ void memcpy_toio(volatile void __iomem *dst, const void *= src, int count) ** Minimize total number of transfers at cost of CPU cycles. ** TODO: only look at src alignment and adjust the stores to dest. */ -void memcpy_fromio(void *dst, const volatile void __iomem *src, int count) +void memcpy_fromio(void *dst, const volatile void __iomem *src, size_t cou= nt) { /* first compare alignment of src/dst */=20 if ( (((unsigned long)dst ^ (unsigned long)src) & 1) || (count < 2) ) @@ -103,7 +103,7 @@ void memcpy_fromio(void *dst, const volatile void __iom= em *src, int count) * Assumes the device can cope with 32-bit transfers. 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J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 08/10] sh: Align prototypes of IO memcpy/memset Date: Mon, 30 Sep 2024 15:23:19 +0200 Message-ID: <20240930132321.2785718-9-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB2707:EE_ X-MS-Office365-Filtering-Correlation-Id: b5e74cc1-c729-4e72-0eee-08dce15366b4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" Align the prototypes of the memcpy_{from,to}io and memset_io functions with the new ones from iomap_copy.c and remove function declarations, because they are now declared in asm-generic/io.h. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter Reviewed-by: Geert Uytterhoeven --- Changes for v7: - New patch --- arch/sh/include/asm/io.h | 3 --- arch/sh/kernel/io.c | 6 +++--- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h index cf5eab840d57..e5c780eb22d4 100644 --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -272,9 +272,6 @@ __BUILD_IOPORT_STRING(q, u64) #define memset_io memset_io #define memcpy_fromio memcpy_fromio #define memcpy_toio memcpy_toio -void memcpy_fromio(void *, const volatile void __iomem *, unsigned long); -void memcpy_toio(volatile void __iomem *, const void *, unsigned long); -void memset_io(volatile void __iomem *, int, unsigned long); =20 /* Quad-word real-mode I/O, don't ask.. */ unsigned long long peek_real_address_q(unsigned long long addr); diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c index da22f3b32d30..588771cf9b7e 100644 --- a/arch/sh/kernel/io.c +++ b/arch/sh/kernel/io.c @@ -13,7 +13,7 @@ /* * Copy data from IO memory space to "real" memory space. */ -void memcpy_fromio(void *to, const volatile void __iomem *from, unsigned l= ong count) +void memcpy_fromio(void *to, const volatile void __iomem *from, size_t cou= nt) { /* * Would it be worthwhile doing byte and long transfers first @@ -76,7 +76,7 @@ EXPORT_SYMBOL(memcpy_fromio); 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Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 09/10] um: Add dummy implementation for IO memcpy/memset Date: Mon, 30 Sep 2024 15:23:20 +0200 Message-ID: <20240930132321.2785718-10-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB3380:EE_ X-MS-Office365-Filtering-Correlation-Id: aac416ad-a2cd-4e99-766d-08dce1536763 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" The um arch is the only architecture that sets the config 'NO_IOMEM', yet drivers that use IO memory can be selected. In order to make these drivers happy we add a dummy implementation for memcpy_{from,to}io and memset_io functions. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v7: - New patch --- arch/um/include/asm/io.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/um/include/asm/io.h b/arch/um/include/asm/io.h index 9ea42cc746d9..f02f40609798 100644 --- a/arch/um/include/asm/io.h +++ b/arch/um/include/asm/io.h @@ -21,6 +21,23 @@ static inline void iounmap(void __iomem *addr) } #endif /* iounmap */ =20 +static inline void memset_io(volatile void __iomem *dst, int c, size_t cou= nt) +{ + memset((void *)dst, c, count); +} + +static inline void memcpy_toio(volatile void __iomem *to, const void *from, + size_t count) +{ + memcpy((void *)to, from, count); +} + +static inline void memcpy_fromio(void *to, const volatile void __iomem *fr= om, + size_t count) +{ + memcpy(to, (void *)from, count); +} + #include =20 #endif --=20 2.34.1 From nobody Thu Nov 28 15:32:33 2024 Received: from smtpout147.security-mail.net (smtpout147.security-mail.net [85.31.212.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 72A0C192D63 for ; 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J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v7 10/10] arm: Align prototype of IO memset Date: Mon, 30 Sep 2024 15:23:21 +0200 Message-ID: <20240930132321.2785718-11-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930132321.2785718-1-jvetter@kalrayinc.com> References: <20240930132321.2785718-1-jvetter@kalrayinc.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0048.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:658::23) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB3380:EE_ X-MS-Office365-Filtering-Correlation-Id: 0075e09f-0570-48e7-31b0-08dce1536818 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|7416014|366016|38350700014|921020; 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charset="utf-8" Align prototype of the memset_io function with the new one from iomap_copy.c Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter Reviewed-by: Geert Uytterhoeven --- Changes for v7: - New patch --- arch/arm/include/asm/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 1815748f5d2a..5cff929c3e40 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -298,7 +298,7 @@ extern void _memset_io(volatile void __iomem *, int, si= ze_t); #define writesl(p,d,l) __raw_writesl(p,d,l) =20 #ifndef __ARMBE__ -static inline void memset_io(volatile void __iomem *dst, unsigned c, +static inline void memset_io(volatile void __iomem *dst, int c, size_t count) { extern void mmioset(void *, unsigned int, size_t); --=20 2.34.1