Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/unicore32/include/asm/io.h
10818 views
1
/*

2
 * linux/arch/unicore32/include/asm/io.h

3
 *

4
 * Code specific to PKUnity SoC and UniCore ISA

5
 *

6
 * Copyright (C) 2001-2010 GUAN Xue-tao

7
 *

8
 * This program is free software; you can redistribute it and/or modify

9
 * it under the terms of the GNU General Public License version 2 as

10
 * published by the Free Software Foundation.

11
 */

12
#ifndef __UNICORE_IO_H__

13
#define __UNICORE_IO_H__

14


15
#ifdef __KERNEL__

16


17
#include <asm/byteorder.h>

18
#include <asm/memory.h>

19
#include <asm/system.h>

20


21
#define PCI_IOBASE	PKUNITY_PCILIO_BASE

22
#include <asm-generic/io.h>

23


24
/*

25
 * __uc32_ioremap and __uc32_ioremap_cached takes CPU physical address.

26
 */

27
extern void __iomem *__uc32_ioremap(unsigned long, size_t);

28
extern void __iomem *__uc32_ioremap_cached(unsigned long, size_t);

29
extern void __uc32_iounmap(volatile void __iomem *addr);

30


31
/*

32
 * ioremap and friends.

33
 *

34
 * ioremap takes a PCI memory address, as specified in

35
 * Documentation/IO-mapping.txt.

36
 *

37
 */

38
#define ioremap(cookie, size)		__uc32_ioremap(cookie, size)

39
#define ioremap_cached(cookie, size)	__uc32_ioremap_cached(cookie, size)

40
#define iounmap(cookie)			__uc32_iounmap(cookie)

41


42
/*

43
 * Convert a physical pointer to a virtual kernel pointer for /dev/mem

44
 * access

45
 */

46
#undef xlate_dev_mem_ptr

47
#define xlate_dev_mem_ptr(p)	__va(p)

48


49
#define HAVE_ARCH_PIO_SIZE

50
#define PIO_OFFSET		(unsigned int)(PCI_IOBASE)

51
#define PIO_MASK		(unsigned int)(IO_SPACE_LIMIT)

52
#define PIO_RESERVED		(PIO_OFFSET + PIO_MASK + 1)

53


54
#endif	/* __KERNEL__ */

55
#endif	/* __UNICORE_IO_H__ */

56


57