1/* 2 * S390 version 3 * Copyright IBM Corp. 1999 4 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) 5 * 6 * Derived from "include/asm-i386/io.h" 7 */ 8 9#ifndef _S390_IO_H 10#define _S390_IO_H 11 12#include <linux/kernel.h> 13#include <asm/page.h> 14#include <asm/pci_io.h> 15 16#define xlate_dev_mem_ptr xlate_dev_mem_ptr 17void *xlate_dev_mem_ptr(phys_addr_t phys); 18#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr 19void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr); 20 21/* 22 * Convert a virtual cached pointer to an uncached pointer 23 */ 24#define xlate_dev_kmem_ptr(p) p 25 26#define IO_SPACE_LIMIT 0 27 28#ifdef CONFIG_PCI 29 30#define ioremap_nocache(addr, size) ioremap(addr, size) 31#define ioremap_wc ioremap_nocache 32#define ioremap_wt ioremap_nocache 33 34static inline void __iomem *ioremap(unsigned long offset, unsigned long size) 35{ 36 return (void __iomem *) offset; 37} 38 39static inline void iounmap(volatile void __iomem *addr) 40{ 41} 42 43static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 44{ 45 return NULL; 46} 47 48static inline void ioport_unmap(void __iomem *p) 49{ 50} 51 52/* 53 * s390 needs a private implementation of pci_iomap since ioremap with its 54 * offset parameter isn't sufficient. That's because BAR spaces are not 55 * disjunctive on s390 so we need the bar parameter of pci_iomap to find 56 * the corresponding device and create the mapping cookie. 57 */ 58#define pci_iomap pci_iomap 59#define pci_iounmap pci_iounmap 60#define pci_iomap_wc pci_iomap 61#define pci_iomap_wc_range pci_iomap_range 62 63#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count) 64#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count) 65#define memset_io(dst, val, count) zpci_memset_io(dst, val, count) 66 67#define __raw_readb zpci_read_u8 68#define __raw_readw zpci_read_u16 69#define __raw_readl zpci_read_u32 70#define __raw_readq zpci_read_u64 71#define __raw_writeb zpci_write_u8 72#define __raw_writew zpci_write_u16 73#define __raw_writel zpci_write_u32 74#define __raw_writeq zpci_write_u64 75 76#endif /* CONFIG_PCI */ 77 78#include <asm-generic/io.h> 79 80#endif 81