/* * Based on arch/arm/include/asm/io.h * * Copyright (C) 1996-2000 Russell King * Copyright (C) 2012 ARM Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #ifndef __ASM_IO_H #define __ASM_IO_H /* * I/O memory access primitives. Reads are ordered relative to any * following Normal memory access. Writes are ordered relative to any prior * Normal memory access. */ #define readb(c) ({ u8 __v = readb_relaxed(c); __iormb(); __v; }) #define readw(c) ({ u16 __v = readw_relaxed(c); __iormb(); __v; }) #define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(); __v; }) #define readq(c) ({ u64 __v = readq_relaxed(c); __iormb(); __v; }) #define writeb(v, c) ({ __iowmb(); writeb_relaxed((v), (c)); }) #define writew(v, c) ({ __iowmb(); writew_relaxed((v), (c)); }) #define writel(v, c) ({ __iowmb(); writel_relaxed((v), (c)); }) #define writeq(v, c) ({ __iowmb(); writeq_relaxed((v), (c)); }) #define ioread8 readb #define ioread16 readw #define ioread32 readl #define ioread64 readq #define iowrite8 writeb #define iowrite16 writew #define iowrite32 writel #define iowrite64 writeq #endif /* __ASM_IO_H */