1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * S390 version 4 * Copyright IBM Corp. 1999 5 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) 6 * 7 * Derived from "include/asm-i386/io.h" 8 */ 9 10#ifndef _S390_IO_H 11#define _S390_IO_H 12 13#include <linux/kernel.h> 14#include <asm/page.h> 15#include <asm/pgtable.h> 16#include <asm/pci_io.h> 17 18#define xlate_dev_mem_ptr xlate_dev_mem_ptr 19void *xlate_dev_mem_ptr(phys_addr_t phys); 20#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr 21void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr); 22 23#define IO_SPACE_LIMIT 0 24 25/* 26 * I/O memory mapping functions. 27 */ 28#define ioremap_prot ioremap_prot 29#define iounmap iounmap 30 31#define _PAGE_IOREMAP pgprot_val(PAGE_KERNEL) 32 33#define ioremap_wc(addr, size) \ 34 ioremap_prot((addr), (size), pgprot_val(pgprot_writecombine(PAGE_KERNEL))) 35#define ioremap_wt(addr, size) \ 36 ioremap_prot((addr), (size), pgprot_val(pgprot_writethrough(PAGE_KERNEL))) 37 38static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 39{ 40 return NULL; 41} 42 43static inline void ioport_unmap(void __iomem *p) 44{ 45} 46 47#ifdef CONFIG_PCI 48 49/* 50 * s390 needs a private implementation of pci_iomap since ioremap with its 51 * offset parameter isn't sufficient. That's because BAR spaces are not 52 * disjunctive on s390 so we need the bar parameter of pci_iomap to find 53 * the corresponding device and create the mapping cookie. 54 */ 55#define pci_iomap pci_iomap 56#define pci_iomap_range pci_iomap_range 57#define pci_iounmap pci_iounmap 58#define pci_iomap_wc pci_iomap_wc 59#define pci_iomap_wc_range pci_iomap_wc_range 60 61#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count) 62#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count) 63#define memset_io(dst, val, count) zpci_memset_io(dst, val, count) 64 65#define mmiowb() zpci_barrier() 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