1/*
 2 *  S390 version
 3 *    Copyright IBM Corp. 1999
 4 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
 5 *
 6 *  Derived from "include/asm-i386/io.h"
 7 */
 8
 9#ifndef _S390_IO_H
10#define _S390_IO_H
11
12#include <linux/kernel.h>
13#include <asm/page.h>
 
14#include <asm/pci_io.h>
15
16#define xlate_dev_mem_ptr xlate_dev_mem_ptr
17void *xlate_dev_mem_ptr(phys_addr_t phys);
18#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
19void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
20
21/*
22 * Convert a virtual cached pointer to an uncached pointer
23 */
24#define xlate_dev_kmem_ptr(p)	p
25
26#define IO_SPACE_LIMIT 0
27
28#ifdef CONFIG_PCI
29
30#define ioremap_nocache(addr, size)	ioremap(addr, size)
31#define ioremap_wc			ioremap_nocache
32#define ioremap_wt			ioremap_nocache
33
34static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
35{
36	return (void __iomem *) offset;
37}
38
39static inline void iounmap(volatile void __iomem *addr)
40{
41}
 
42
43static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
44{
45	return NULL;
46}
47
48static inline void ioport_unmap(void __iomem *p)
49{
50}
51
 
 
52/*
53 * s390 needs a private implementation of pci_iomap since ioremap with its
54 * offset parameter isn't sufficient. That's because BAR spaces are not
55 * disjunctive on s390 so we need the bar parameter of pci_iomap to find
56 * the corresponding device and create the mapping cookie.
57 */
58#define pci_iomap pci_iomap
 
59#define pci_iounmap pci_iounmap
60#define pci_iomap_wc pci_iomap
61#define pci_iomap_wc_range pci_iomap_range
62
63#define memcpy_fromio(dst, src, count)	zpci_memcpy_fromio(dst, src, count)
64#define memcpy_toio(dst, src, count)	zpci_memcpy_toio(dst, src, count)
65#define memset_io(dst, val, count)	zpci_memset_io(dst, val, count)
 
 
66
67#define __raw_readb	zpci_read_u8
68#define __raw_readw	zpci_read_u16
69#define __raw_readl	zpci_read_u32
70#define __raw_readq	zpci_read_u64
71#define __raw_writeb	zpci_write_u8
72#define __raw_writew	zpci_write_u16
73#define __raw_writel	zpci_write_u32
74#define __raw_writeq	zpci_write_u64
75
76#endif /* CONFIG_PCI */
77
78#include <asm-generic/io.h>
79
80#endif

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