From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/s390/include/asm/io.h | 80 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 arch/s390/include/asm/io.h (limited to 'arch/s390/include/asm/io.h') diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h new file mode 100644 index 0000000000..4453ad7c11 --- /dev/null +++ b/arch/s390/include/asm/io.h @@ -0,0 +1,80 @@ +/* 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 +#include +#include +#include + +#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 + +#endif /* CONFIG_PCI */ + +#include + +#endif -- cgit v1.2.3