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 void __iomem *ioremap(phys_addr_t addr, size_t size); 30 void iounmap(volatile void __iomem *addr); 31 32 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 33 { 34 return NULL; 35 } 36 37 static inline void ioport_unmap(void __iomem *p) 38 { 39 } 40 41 #ifdef CONFIG_PCI 42 43 /* 44 * s390 needs a private implementation of pci_iomap since ioremap with its 45 * offset parameter isn't sufficient. That's because BAR spaces are not 46 * disjunctive on s390 so we need the bar parameter of pci_iomap to find 47 * the corresponding device and create the mapping cookie. 48 */ 49 #define pci_iomap pci_iomap 50 #define pci_iomap_range pci_iomap_range 51 #define pci_iounmap pci_iounmap 52 #define pci_iomap_wc pci_iomap_wc 53 #define pci_iomap_wc_range pci_iomap_wc_range 54 55 #define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count) 56 #define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count) 57 #define memset_io(dst, val, count) zpci_memset_io(dst, val, count) 58 59 #define mmiowb() zpci_barrier() 60 61 #define __raw_readb zpci_read_u8 62 #define __raw_readw zpci_read_u16 63 #define __raw_readl zpci_read_u32 64 #define __raw_readq zpci_read_u64 65 #define __raw_writeb zpci_write_u8 66 #define __raw_writew zpci_write_u16 67 #define __raw_writel zpci_write_u32 68 #define __raw_writeq zpci_write_u64 69 70 #endif /* CONFIG_PCI */ 71 72 #include <asm-generic/io.h> 73 74 #endif 75