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/pci_io.h> 16 17 #define xlate_dev_mem_ptr xlate_dev_mem_ptr 18 void *xlate_dev_mem_ptr(phys_addr_t phys); 19 #define unxlate_dev_mem_ptr unxlate_dev_mem_ptr 20 void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr); 21 22 /* 23 * Convert a virtual cached pointer to an uncached pointer 24 */ 25 #define xlate_dev_kmem_ptr(p) p 26 27 #define IO_SPACE_LIMIT 0 28 29 #define ioremap_nocache(addr, size) ioremap(addr, size) 30 #define ioremap_wc ioremap_nocache 31 #define ioremap_wt ioremap_nocache 32 33 static inline void __iomem *ioremap(unsigned long offset, unsigned long size) 34 { 35 return (void __iomem *) offset; 36 } 37 38 static inline void iounmap(volatile void __iomem *addr) 39 { 40 } 41 42 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 43 { 44 return NULL; 45 } 46 47 static inline void ioport_unmap(void __iomem *p) 48 { 49 } 50 51 #ifdef CONFIG_PCI 52 53 /* 54 * s390 needs a private implementation of pci_iomap since ioremap with its 55 * offset parameter isn't sufficient. That's because BAR spaces are not 56 * disjunctive on s390 so we need the bar parameter of pci_iomap to find 57 * the corresponding device and create the mapping cookie. 58 */ 59 #define pci_iomap pci_iomap 60 #define pci_iounmap pci_iounmap 61 #define pci_iomap_wc pci_iomap 62 #define pci_iomap_wc_range pci_iomap_range 63 64 #define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count) 65 #define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count) 66 #define memset_io(dst, val, count) zpci_memset_io(dst, val, count) 67 68 #define __raw_readb zpci_read_u8 69 #define __raw_readw zpci_read_u16 70 #define __raw_readl zpci_read_u32 71 #define __raw_readq zpci_read_u64 72 #define __raw_writeb zpci_write_u8 73 #define __raw_writew zpci_write_u16 74 #define __raw_writel zpci_write_u32 75 #define __raw_writeq zpci_write_u64 76 77 #endif /* CONFIG_PCI */ 78 79 #include <asm-generic/io.h> 80 81 #endif 82