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J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Madhavan Srinivasan , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Niklas Schnelle , Manivannan Sadhasivam , Miquel Raynal , Vignesh Raghavendra , Jaroslav Kysela , Takashi Iwai 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, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-sound@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v8 11/14] s390: Add wrappers around zpci_memcpy/zpci_memset Date: Tue, 8 Oct 2024 09:50:19 +0200 Message-ID: <20241008075023.3052370-12-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241008075023.3052370-1-jvetter@kalrayinc.com> References: <20241008075023.3052370-1-jvetter@kalrayinc.com> X-ClientProxiedBy: AM4PR07CA0019.eurprd07.prod.outlook.com (2603:10a6:205:1::32) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Post: List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|PR1P264MB3357:EE_ X-MS-Office365-Filtering-Correlation-Id: e5a8046c-f4a5-49be-865a-08dce76e001e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|52116014|7416014|376014|1800799024|366016|921020|38350700014; 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These wrappers are necessary because the prototypes of the zpci_ functions can't be changed. In s390 arch code they are directly being called and the return value is checked, At the same time they serve as generic memcpy_{from,to}io and memset_io functions, without a return value. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v8: - New patch --- arch/s390/include/asm/io.h | 27 +++++++++++++++++++++++---- arch/s390/include/asm/pci_io.h | 6 +++--- 2 files changed, 26 insertions(+), 7 deletions(-) diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h index 0fbc992d7a5e..f3ef6d4130b3 100644 --- a/arch/s390/include/asm/io.h +++ b/arch/s390/include/asm/io.h @@ -58,10 +58,6 @@ static inline void ioport_unmap(void __iomem *p) #define pci_iomap_wc pci_iomap_wc #define pci_iomap_wc_range pci_iomap_wc_range -#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count) -#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count) -#define memset_io(dst, val, count) zpci_memset_io(dst, val, count) - #define mmiowb() zpci_barrier() #define __raw_readb zpci_read_u8 @@ -73,6 +69,10 @@ static inline void ioport_unmap(void __iomem *p) #define __raw_writel zpci_write_u32 #define __raw_writeq zpci_write_u64 +#define memcpy_fromio memcpy_fromio +#define memcpy_toio memcpy_toio +#define memset_io memset_io + /* combine single writes by using store-block insn */ static inline void __iowrite32_copy(void __iomem *to, const void *from, size_t count) @@ -88,6 +88,25 @@ static inline void __iowrite64_copy(void __iomem *to, const void *from, } #define __iowrite64_copy __iowrite64_copy +static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, + size_t n) +{ + zpci_memcpy_fromio(dst, src, n); +} + +static inline void memcpy_toio(volatile void __iomem *dst, + const void *src, size_t n) +{ + zpci_memcpy_toio(dst, src, n); +} + +static inline void memset_io(volatile void __iomem *dst, + int val, size_t count) +{ + zpci_memset_io(dst, val, count); +} + + #endif /* CONFIG_PCI */ #include diff --git a/arch/s390/include/asm/pci_io.h b/arch/s390/include/asm/pci_io.h index 2686bee800e3..43a5ea4ee20f 100644 --- a/arch/s390/include/asm/pci_io.h +++ b/arch/s390/include/asm/pci_io.h @@ -143,7 +143,7 @@ static inline int zpci_get_max_io_size(u64 src, u64 dst, int len, int max) static inline int zpci_memcpy_fromio(void *dst, const volatile void __iomem *src, - unsigned long n) + size_t n) { int size, rc = 0; @@ -162,7 +162,7 @@ static inline int zpci_memcpy_fromio(void *dst, } static inline int zpci_memcpy_toio(volatile void __iomem *dst, - const void *src, unsigned long n) + const void *src, size_t n) { int size, rc = 0; @@ -187,7 +187,7 @@ static inline int zpci_memcpy_toio(volatile void __iomem *dst, } static inline int zpci_memset_io(volatile void __iomem *dst, - unsigned char val, size_t count) + int val, size_t count) { u8 *src = kmalloc(count, GFP_KERNEL); int rc;