18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* Trivial implementations of basic i/o routines. Assumes that all 38c2ecf20Sopenharmony_ci of the hard work has been done by ioremap and ioportmap, and that 48c2ecf20Sopenharmony_ci access to i/o space is linear. */ 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci/* This file may be included multiple times. */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#if IO_CONCAT(__IO_PREFIX,trivial_io_bw) 98c2ecf20Sopenharmony_ci__EXTERN_INLINE unsigned int 108c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,ioread8)(const void __iomem *a) 118c2ecf20Sopenharmony_ci{ 128c2ecf20Sopenharmony_ci return __kernel_ldbu(*(const volatile u8 __force *)a); 138c2ecf20Sopenharmony_ci} 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci__EXTERN_INLINE unsigned int 168c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,ioread16)(const void __iomem *a) 178c2ecf20Sopenharmony_ci{ 188c2ecf20Sopenharmony_ci return __kernel_ldwu(*(const volatile u16 __force *)a); 198c2ecf20Sopenharmony_ci} 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci__EXTERN_INLINE void 228c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,iowrite8)(u8 b, void __iomem *a) 238c2ecf20Sopenharmony_ci{ 248c2ecf20Sopenharmony_ci __kernel_stb(b, *(volatile u8 __force *)a); 258c2ecf20Sopenharmony_ci} 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci__EXTERN_INLINE void 288c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,iowrite16)(u16 b, void __iomem *a) 298c2ecf20Sopenharmony_ci{ 308c2ecf20Sopenharmony_ci __kernel_stw(b, *(volatile u16 __force *)a); 318c2ecf20Sopenharmony_ci} 328c2ecf20Sopenharmony_ci#endif 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#if IO_CONCAT(__IO_PREFIX,trivial_io_lq) 358c2ecf20Sopenharmony_ci__EXTERN_INLINE unsigned int 368c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,ioread32)(const void __iomem *a) 378c2ecf20Sopenharmony_ci{ 388c2ecf20Sopenharmony_ci return *(const volatile u32 __force *)a; 398c2ecf20Sopenharmony_ci} 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ci__EXTERN_INLINE void 428c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,iowrite32)(u32 b, void __iomem *a) 438c2ecf20Sopenharmony_ci{ 448c2ecf20Sopenharmony_ci *(volatile u32 __force *)a = b; 458c2ecf20Sopenharmony_ci} 468c2ecf20Sopenharmony_ci#endif 478c2ecf20Sopenharmony_ci 488c2ecf20Sopenharmony_ci#if IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 1 498c2ecf20Sopenharmony_ci__EXTERN_INLINE u8 508c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,readb)(const volatile void __iomem *a) 518c2ecf20Sopenharmony_ci{ 528c2ecf20Sopenharmony_ci return __kernel_ldbu(*(const volatile u8 __force *)a); 538c2ecf20Sopenharmony_ci} 548c2ecf20Sopenharmony_ci 558c2ecf20Sopenharmony_ci__EXTERN_INLINE u16 568c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,readw)(const volatile void __iomem *a) 578c2ecf20Sopenharmony_ci{ 588c2ecf20Sopenharmony_ci return __kernel_ldwu(*(const volatile u16 __force *)a); 598c2ecf20Sopenharmony_ci} 608c2ecf20Sopenharmony_ci 618c2ecf20Sopenharmony_ci__EXTERN_INLINE void 628c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,writeb)(u8 b, volatile void __iomem *a) 638c2ecf20Sopenharmony_ci{ 648c2ecf20Sopenharmony_ci __kernel_stb(b, *(volatile u8 __force *)a); 658c2ecf20Sopenharmony_ci} 668c2ecf20Sopenharmony_ci 678c2ecf20Sopenharmony_ci__EXTERN_INLINE void 688c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,writew)(u16 b, volatile void __iomem *a) 698c2ecf20Sopenharmony_ci{ 708c2ecf20Sopenharmony_ci __kernel_stw(b, *(volatile u16 __force *)a); 718c2ecf20Sopenharmony_ci} 728c2ecf20Sopenharmony_ci#elif IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 2 738c2ecf20Sopenharmony_ci__EXTERN_INLINE u8 748c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,readb)(const volatile void __iomem *a) 758c2ecf20Sopenharmony_ci{ 768c2ecf20Sopenharmony_ci const void __iomem *addr = (const void __iomem *)a; 778c2ecf20Sopenharmony_ci return IO_CONCAT(__IO_PREFIX,ioread8)(addr); 788c2ecf20Sopenharmony_ci} 798c2ecf20Sopenharmony_ci 808c2ecf20Sopenharmony_ci__EXTERN_INLINE u16 818c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,readw)(const volatile void __iomem *a) 828c2ecf20Sopenharmony_ci{ 838c2ecf20Sopenharmony_ci const void __iomem *addr = (const void __iomem *)a; 848c2ecf20Sopenharmony_ci return IO_CONCAT(__IO_PREFIX,ioread16)(addr); 858c2ecf20Sopenharmony_ci} 868c2ecf20Sopenharmony_ci 878c2ecf20Sopenharmony_ci__EXTERN_INLINE void 888c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,writeb)(u8 b, volatile void __iomem *a) 898c2ecf20Sopenharmony_ci{ 908c2ecf20Sopenharmony_ci void __iomem *addr = (void __iomem *)a; 918c2ecf20Sopenharmony_ci IO_CONCAT(__IO_PREFIX,iowrite8)(b, addr); 928c2ecf20Sopenharmony_ci} 938c2ecf20Sopenharmony_ci 948c2ecf20Sopenharmony_ci__EXTERN_INLINE void 958c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,writew)(u16 b, volatile void __iomem *a) 968c2ecf20Sopenharmony_ci{ 978c2ecf20Sopenharmony_ci void __iomem *addr = (void __iomem *)a; 988c2ecf20Sopenharmony_ci IO_CONCAT(__IO_PREFIX,iowrite16)(b, addr); 998c2ecf20Sopenharmony_ci} 1008c2ecf20Sopenharmony_ci#endif 1018c2ecf20Sopenharmony_ci 1028c2ecf20Sopenharmony_ci#if IO_CONCAT(__IO_PREFIX,trivial_rw_lq) == 1 1038c2ecf20Sopenharmony_ci__EXTERN_INLINE u32 1048c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,readl)(const volatile void __iomem *a) 1058c2ecf20Sopenharmony_ci{ 1068c2ecf20Sopenharmony_ci return *(const volatile u32 __force *)a; 1078c2ecf20Sopenharmony_ci} 1088c2ecf20Sopenharmony_ci 1098c2ecf20Sopenharmony_ci__EXTERN_INLINE u64 1108c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,readq)(const volatile void __iomem *a) 1118c2ecf20Sopenharmony_ci{ 1128c2ecf20Sopenharmony_ci return *(const volatile u64 __force *)a; 1138c2ecf20Sopenharmony_ci} 1148c2ecf20Sopenharmony_ci 1158c2ecf20Sopenharmony_ci__EXTERN_INLINE void 1168c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,writel)(u32 b, volatile void __iomem *a) 1178c2ecf20Sopenharmony_ci{ 1188c2ecf20Sopenharmony_ci *(volatile u32 __force *)a = b; 1198c2ecf20Sopenharmony_ci} 1208c2ecf20Sopenharmony_ci 1218c2ecf20Sopenharmony_ci__EXTERN_INLINE void 1228c2ecf20Sopenharmony_ciIO_CONCAT(__IO_PREFIX,writeq)(u64 b, volatile void __iomem *a) 1238c2ecf20Sopenharmony_ci{ 1248c2ecf20Sopenharmony_ci *(volatile u64 __force *)a = b; 1258c2ecf20Sopenharmony_ci} 1268c2ecf20Sopenharmony_ci#endif 1278c2ecf20Sopenharmony_ci 1288c2ecf20Sopenharmony_ci#if IO_CONCAT(__IO_PREFIX,trivial_iounmap) 1298c2ecf20Sopenharmony_ci__EXTERN_INLINE void IO_CONCAT(__IO_PREFIX,iounmap)(volatile void __iomem *a) 1308c2ecf20Sopenharmony_ci{ 1318c2ecf20Sopenharmony_ci} 1328c2ecf20Sopenharmony_ci#endif 133