82 строки
2.0 KiB
C
82 строки
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* S390 version
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* Copyright IBM Corp. 1999
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
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*
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* Derived from "include/asm-i386/io.h"
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*/
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#ifndef _S390_IO_H
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#define _S390_IO_H
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#include <linux/kernel.h>
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#include <asm/page.h>
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#include <asm/pci_io.h>
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#define xlate_dev_mem_ptr xlate_dev_mem_ptr
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void *xlate_dev_mem_ptr(phys_addr_t phys);
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#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
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void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
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/*
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* Convert a virtual cached pointer to an uncached pointer
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*/
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#define xlate_dev_kmem_ptr(p) p
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#define IO_SPACE_LIMIT 0
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#define ioremap_nocache(addr, size) ioremap(addr, size)
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#define ioremap_wc ioremap_nocache
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#define ioremap_wt ioremap_nocache
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static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
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{
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return (void __iomem *) offset;
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}
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static inline void iounmap(volatile void __iomem *addr)
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{
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}
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static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
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{
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return NULL;
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}
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static inline void ioport_unmap(void __iomem *p)
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{
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}
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#ifdef CONFIG_PCI
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/*
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* s390 needs a private implementation of pci_iomap since ioremap with its
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* offset parameter isn't sufficient. That's because BAR spaces are not
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* disjunctive on s390 so we need the bar parameter of pci_iomap to find
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* the corresponding device and create the mapping cookie.
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*/
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#define pci_iomap pci_iomap
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#define pci_iounmap pci_iounmap
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#define pci_iomap_wc pci_iomap
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#define pci_iomap_wc_range pci_iomap_range
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#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count)
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#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count)
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#define memset_io(dst, val, count) zpci_memset_io(dst, val, count)
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#define __raw_readb zpci_read_u8
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#define __raw_readw zpci_read_u16
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#define __raw_readl zpci_read_u32
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#define __raw_readq zpci_read_u64
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#define __raw_writeb zpci_write_u8
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#define __raw_writew zpci_write_u16
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#define __raw_writel zpci_write_u32
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#define __raw_writeq zpci_write_u64
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#endif /* CONFIG_PCI */
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#include <asm-generic/io.h>
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#endif
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