1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * arch/sh/kernel/ioport.c 4 * 5 * Copyright (C) 2000 Niibe Yutaka 6 * Copyright (C) 2005 - 2007 Paul Mundt 7 */ 8 #include <linux/module.h> 9 #include <linux/io.h> 10 #include <asm/io_trapped.h> 11 12 unsigned long sh_io_port_base __read_mostly = -1; 13 EXPORT_SYMBOL(sh_io_port_base); 14 15 void __iomem *ioport_map(unsigned long port, unsigned int nr) 16 { 17 void __iomem *ret; 18 19 ret = __ioport_map_trapped(port, nr); 20 if (ret) 21 return ret; 22 23 return (void __iomem *)(port + sh_io_port_base); 24 } 25 EXPORT_SYMBOL(ioport_map); 26 27 void ioport_unmap(void __iomem *addr) 28 { 29 } 30 EXPORT_SYMBOL(ioport_unmap); 31