• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 #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 
ioremap(unsigned long offset,unsigned long size)34 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
35 {
36 	return (void __iomem *) offset;
37 }
38 
iounmap(volatile void __iomem * addr)39 static inline void iounmap(volatile void __iomem *addr)
40 {
41 }
42 
ioport_map(unsigned long port,unsigned int nr)43 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
44 {
45 	return NULL;
46 }
47 
ioport_unmap(void __iomem * p)48 static 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
81