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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 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