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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
17 void *xlate_dev_mem_ptr(phys_addr_t phys);
18 #define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
19 void 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 #define ioremap_nocache(addr, size) ioremap(addr, size)
29 #define ioremap_wc ioremap_nocache
30 #define ioremap_wt ioremap_nocache
31
32 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
33 {
34 return (void __iomem *) offset;
35 }
36
37 static inline void iounmap(volatile void __iomem *addr)
38 {
39 }
40
41 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
42 {
43 return NULL;
44 }
45
46 static inline void ioport_unmap(void __iomem *p)
47 {
48 }
49
50 #ifdef CONFIG_PCI
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