1*1162b070SVineet Gupta /* 2*1162b070SVineet Gupta * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3*1162b070SVineet Gupta * 4*1162b070SVineet Gupta * This program is free software; you can redistribute it and/or modify 5*1162b070SVineet Gupta * it under the terms of the GNU General Public License version 2 as 6*1162b070SVineet Gupta * published by the Free Software Foundation. 7*1162b070SVineet Gupta */ 8*1162b070SVineet Gupta 9*1162b070SVineet Gupta #ifndef _ASM_ARC_IO_H 10*1162b070SVineet Gupta #define _ASM_ARC_IO_H 11*1162b070SVineet Gupta 12*1162b070SVineet Gupta #include <linux/types.h> 13*1162b070SVineet Gupta #include <asm/byteorder.h> 14*1162b070SVineet Gupta #include <asm/page.h> 15*1162b070SVineet Gupta 16*1162b070SVineet Gupta #define PCI_IOBASE ((void __iomem *)0) 17*1162b070SVineet Gupta 18*1162b070SVineet Gupta extern void __iomem *ioremap(unsigned long physaddr, unsigned long size); 19*1162b070SVineet Gupta extern void iounmap(const void __iomem *addr); 20*1162b070SVineet Gupta 21*1162b070SVineet Gupta #define ioremap_nocache(phy, sz) ioremap(phy, sz) 22*1162b070SVineet Gupta #define ioremap_wc(phy, sz) ioremap(phy, sz) 23*1162b070SVineet Gupta 24*1162b070SVineet Gupta /* Change struct page to physical address */ 25*1162b070SVineet Gupta #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) 26*1162b070SVineet Gupta 27*1162b070SVineet Gupta #define __raw_readb __raw_readb 28*1162b070SVineet Gupta static inline u8 __raw_readb(const volatile void __iomem *addr) 29*1162b070SVineet Gupta { 30*1162b070SVineet Gupta u8 b; 31*1162b070SVineet Gupta 32*1162b070SVineet Gupta __asm__ __volatile__( 33*1162b070SVineet Gupta " ldb%U1 %0, %1 \n" 34*1162b070SVineet Gupta : "=r" (b) 35*1162b070SVineet Gupta : "m" (*(volatile u8 __force *)addr) 36*1162b070SVineet Gupta : "memory"); 37*1162b070SVineet Gupta 38*1162b070SVineet Gupta return b; 39*1162b070SVineet Gupta } 40*1162b070SVineet Gupta 41*1162b070SVineet Gupta #define __raw_readw __raw_readw 42*1162b070SVineet Gupta static inline u16 __raw_readw(const volatile void __iomem *addr) 43*1162b070SVineet Gupta { 44*1162b070SVineet Gupta u16 s; 45*1162b070SVineet Gupta 46*1162b070SVineet Gupta __asm__ __volatile__( 47*1162b070SVineet Gupta " ldw%U1 %0, %1 \n" 48*1162b070SVineet Gupta : "=r" (s) 49*1162b070SVineet Gupta : "m" (*(volatile u16 __force *)addr) 50*1162b070SVineet Gupta : "memory"); 51*1162b070SVineet Gupta 52*1162b070SVineet Gupta return s; 53*1162b070SVineet Gupta } 54*1162b070SVineet Gupta 55*1162b070SVineet Gupta #define __raw_readl __raw_readl 56*1162b070SVineet Gupta static inline u32 __raw_readl(const volatile void __iomem *addr) 57*1162b070SVineet Gupta { 58*1162b070SVineet Gupta u32 w; 59*1162b070SVineet Gupta 60*1162b070SVineet Gupta __asm__ __volatile__( 61*1162b070SVineet Gupta " ld%U1 %0, %1 \n" 62*1162b070SVineet Gupta : "=r" (w) 63*1162b070SVineet Gupta : "m" (*(volatile u32 __force *)addr) 64*1162b070SVineet Gupta : "memory"); 65*1162b070SVineet Gupta 66*1162b070SVineet Gupta return w; 67*1162b070SVineet Gupta } 68*1162b070SVineet Gupta 69*1162b070SVineet Gupta #define __raw_writeb __raw_writeb 70*1162b070SVineet Gupta static inline void __raw_writeb(u8 b, volatile void __iomem *addr) 71*1162b070SVineet Gupta { 72*1162b070SVineet Gupta __asm__ __volatile__( 73*1162b070SVineet Gupta " stb%U1 %0, %1 \n" 74*1162b070SVineet Gupta : 75*1162b070SVineet Gupta : "r" (b), "m" (*(volatile u8 __force *)addr) 76*1162b070SVineet Gupta : "memory"); 77*1162b070SVineet Gupta } 78*1162b070SVineet Gupta 79*1162b070SVineet Gupta #define __raw_writew __raw_writew 80*1162b070SVineet Gupta static inline void __raw_writew(u16 s, volatile void __iomem *addr) 81*1162b070SVineet Gupta { 82*1162b070SVineet Gupta __asm__ __volatile__( 83*1162b070SVineet Gupta " stw%U1 %0, %1 \n" 84*1162b070SVineet Gupta : 85*1162b070SVineet Gupta : "r" (s), "m" (*(volatile u16 __force *)addr) 86*1162b070SVineet Gupta : "memory"); 87*1162b070SVineet Gupta 88*1162b070SVineet Gupta } 89*1162b070SVineet Gupta 90*1162b070SVineet Gupta #define __raw_writel __raw_writel 91*1162b070SVineet Gupta static inline void __raw_writel(u32 w, volatile void __iomem *addr) 92*1162b070SVineet Gupta { 93*1162b070SVineet Gupta __asm__ __volatile__( 94*1162b070SVineet Gupta " st%U1 %0, %1 \n" 95*1162b070SVineet Gupta : 96*1162b070SVineet Gupta : "r" (w), "m" (*(volatile u32 __force *)addr) 97*1162b070SVineet Gupta : "memory"); 98*1162b070SVineet Gupta 99*1162b070SVineet Gupta } 100*1162b070SVineet Gupta 101*1162b070SVineet Gupta #include <asm-generic/io.h> 102*1162b070SVineet Gupta 103*1162b070SVineet Gupta #endif /* _ASM_ARC_IO_H */ 104