1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2021 Intel Corporation 4 * Author: johannes@sipsolutions.net 5 */ 6 #ifndef _LOGIC_IO_H 7 #define _LOGIC_IO_H 8 #include <linux/types.h> 9 10 /* include this file into asm/io.h */ 11 12 #ifdef CONFIG_INDIRECT_IOMEM 13 14 #ifdef CONFIG_INDIRECT_IOMEM_FALLBACK 15 /* 16 * If you want emulated IO memory to fall back to 'normal' IO memory 17 * if a region wasn't registered as emulated, then you need to have 18 * all of the real_* functions implemented. 19 */ 20 #if !defined(real_ioremap) || !defined(real_iounmap) || \ 21 !defined(real_raw_readb) || !defined(real_raw_writeb) || \ 22 !defined(real_raw_readw) || !defined(real_raw_writew) || \ 23 !defined(real_raw_readl) || !defined(real_raw_writel) || \ 24 (defined(CONFIG_64BIT) && \ 25 (!defined(real_raw_readq) || !defined(real_raw_writeq))) || \ 26 !defined(real_memset_io) || \ 27 !defined(real_memcpy_fromio) || \ 28 !defined(real_memcpy_toio) 29 #error "Must provide fallbacks for real IO memory access" 30 #endif /* defined ... */ 31 #endif /* CONFIG_INDIRECT_IOMEM_FALLBACK */ 32 33 #define ioremap ioremap 34 void __iomem *ioremap(phys_addr_t offset, size_t size); 35 36 #define iounmap iounmap 37 void iounmap(void volatile __iomem *addr); 38 39 #define __raw_readb __raw_readb 40 u8 __raw_readb(const volatile void __iomem *addr); 41 42 #define __raw_readw __raw_readw 43 u16 __raw_readw(const volatile void __iomem *addr); 44 45 #define __raw_readl __raw_readl 46 u32 __raw_readl(const volatile void __iomem *addr); 47 48 #ifdef CONFIG_64BIT 49 #define __raw_readq __raw_readq 50 u64 __raw_readq(const volatile void __iomem *addr); 51 #endif /* CONFIG_64BIT */ 52 53 #define __raw_writeb __raw_writeb 54 void __raw_writeb(u8 value, volatile void __iomem *addr); 55 56 #define __raw_writew __raw_writew 57 void __raw_writew(u16 value, volatile void __iomem *addr); 58 59 #define __raw_writel __raw_writel 60 void __raw_writel(u32 value, volatile void __iomem *addr); 61 62 #ifdef CONFIG_64BIT 63 #define __raw_writeq __raw_writeq 64 void __raw_writeq(u64 value, volatile void __iomem *addr); 65 #endif /* CONFIG_64BIT */ 66 67 #define memset_io memset_io 68 void memset_io(volatile void __iomem *addr, int value, size_t size); 69 70 #define memcpy_fromio memcpy_fromio 71 void memcpy_fromio(void *buffer, const volatile void __iomem *addr, 72 size_t size); 73 74 #define memcpy_toio memcpy_toio 75 void memcpy_toio(volatile void __iomem *addr, const void *buffer, size_t size); 76 77 #endif /* CONFIG_INDIRECT_IOMEM */ 78 #endif /* _LOGIC_IO_H */ 79