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/* SPDX-License-Identifier: GPL-2.0 */
/*
* S390 version
* Copyright IBM Corp. 1999
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*
* Derived from "include/asm-i386/io.h"
*/
#ifndef _S390_IO_H
#define _S390_IO_H
#include <linux/kernel.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/pci_io.h>
#define xlate_dev_mem_ptr xlate_dev_mem_ptr
void *xlate_dev_mem_ptr(phys_addr_t phys);
#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
#define IO_SPACE_LIMIT 0
/*
* I/O memory mapping functions.
*/
#define ioremap_prot ioremap_prot
#define iounmap iounmap
#define _PAGE_IOREMAP pgprot_val(PAGE_KERNEL)
#define ioremap_wc(addr, size) \
ioremap_prot((addr), (size), pgprot_val(pgprot_writecombine(PAGE_KERNEL)))
#define ioremap_wt(addr, size) \
ioremap_prot((addr), (size), pgprot_val(pgprot_writethrough(PAGE_KERNEL)))
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
return NULL;
}
static inline void ioport_unmap(void __iomem *p)
{
}
#ifdef CONFIG_PCI
/*
* s390 needs a private implementation of pci_iomap since ioremap with its
* offset parameter isn't sufficient. That's because BAR spaces are not
* disjunctive on s390 so we need the bar parameter of pci_iomap to find
* the corresponding device and create the mapping cookie.
*/
#define pci_iomap pci_iomap
#define pci_iomap_range pci_iomap_range
#define pci_iounmap pci_iounmap
#define pci_iomap_wc pci_iomap_wc
#define pci_iomap_wc_range pci_iomap_wc_range
#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count)
#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count)
#define memset_io(dst, val, count) zpci_memset_io(dst, val, count)
#define mmiowb() zpci_barrier()
#define __raw_readb zpci_read_u8
#define __raw_readw zpci_read_u16
#define __raw_readl zpci_read_u32
#define __raw_readq zpci_read_u64
#define __raw_writeb zpci_write_u8
#define __raw_writew zpci_write_u16
#define __raw_writel zpci_write_u32
#define __raw_writeq zpci_write_u64
/* combine single writes by using store-block insn */
static inline void __iowrite32_copy(void __iomem *to, const void *from,
size_t count)
{
zpci_memcpy_toio(to, from, count * 4);
}
#define __iowrite32_copy __iowrite32_copy
static inline void __iowrite64_copy(void __iomem *to, const void *from,
size_t count)
{
zpci_memcpy_toio(to, from, count * 8);
}
#define __iowrite64_copy __iowrite64_copy
#endif /* CONFIG_PCI */
#include <asm-generic/io.h>
#endif
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