1 /* 2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef _ASM_ARC_IO_H 10 #define _ASM_ARC_IO_H 11 12 #include <linux/types.h> 13 #include <asm/byteorder.h> 14 #include <asm/page.h> 15 16 #define PCI_IOBASE ((void __iomem *)0) 17 18 extern void __iomem *ioremap(unsigned long physaddr, unsigned long size); 19 extern void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size, 20 unsigned long flags); 21 extern void iounmap(const void __iomem *addr); 22 23 #define ioremap_nocache(phy, sz) ioremap(phy, sz) 24 #define ioremap_wc(phy, sz) ioremap(phy, sz) 25 26 /* Change struct page to physical address */ 27 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) 28 29 #define __raw_readb __raw_readb 30 static inline u8 __raw_readb(const volatile void __iomem *addr) 31 { 32 u8 b; 33 34 __asm__ __volatile__( 35 " ldb%U1 %0, %1 \n" 36 : "=r" (b) 37 : "m" (*(volatile u8 __force *)addr) 38 : "memory"); 39 40 return b; 41 } 42 43 #define __raw_readw __raw_readw 44 static inline u16 __raw_readw(const volatile void __iomem *addr) 45 { 46 u16 s; 47 48 __asm__ __volatile__( 49 " ldw%U1 %0, %1 \n" 50 : "=r" (s) 51 : "m" (*(volatile u16 __force *)addr) 52 : "memory"); 53 54 return s; 55 } 56 57 #define __raw_readl __raw_readl 58 static inline u32 __raw_readl(const volatile void __iomem *addr) 59 { 60 u32 w; 61 62 __asm__ __volatile__( 63 " ld%U1 %0, %1 \n" 64 : "=r" (w) 65 : "m" (*(volatile u32 __force *)addr) 66 : "memory"); 67 68 return w; 69 } 70 71 #define __raw_writeb __raw_writeb 72 static inline void __raw_writeb(u8 b, volatile void __iomem *addr) 73 { 74 __asm__ __volatile__( 75 " stb%U1 %0, %1 \n" 76 : 77 : "r" (b), "m" (*(volatile u8 __force *)addr) 78 : "memory"); 79 } 80 81 #define __raw_writew __raw_writew 82 static inline void __raw_writew(u16 s, volatile void __iomem *addr) 83 { 84 __asm__ __volatile__( 85 " stw%U1 %0, %1 \n" 86 : 87 : "r" (s), "m" (*(volatile u16 __force *)addr) 88 : "memory"); 89 90 } 91 92 #define __raw_writel __raw_writel 93 static inline void __raw_writel(u32 w, volatile void __iomem *addr) 94 { 95 __asm__ __volatile__( 96 " st%U1 %0, %1 \n" 97 : 98 : "r" (w), "m" (*(volatile u32 __force *)addr) 99 : "memory"); 100 101 } 102 103 #define readb_relaxed readb 104 #define readw_relaxed readw 105 #define readl_relaxed readl 106 107 #include <asm-generic/io.h> 108 109 #endif /* _ASM_ARC_IO_H */ 110