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Diffstat (limited to 'arch/unicore32/include/asm/io.h')
| -rw-r--r-- | arch/unicore32/include/asm/io.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/io.h b/arch/unicore32/include/asm/io.h new file mode 100644 index 000000000000..4bd87f3d13d4 --- /dev/null +++ b/arch/unicore32/include/asm/io.h @@ -0,0 +1,55 @@ +/* + * linux/arch/unicore32/include/asm/io.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_IO_H__ +#define __UNICORE_IO_H__ + +#ifdef __KERNEL__ + +#include <asm/byteorder.h> +#include <asm/memory.h> +#include <asm/system.h> + +#define PCI_IOBASE PKUNITY_PCILIO_BASE +#include <asm-generic/io.h> + +/* + * __uc32_ioremap and __uc32_ioremap_cached takes CPU physical address. + */ +extern void __iomem *__uc32_ioremap(unsigned long, size_t); +extern void __iomem *__uc32_ioremap_cached(unsigned long, size_t); +extern void __uc32_iounmap(volatile void __iomem *addr); + +/* + * ioremap and friends. + * + * ioremap takes a PCI memory address, as specified in + * Documentation/IO-mapping.txt. + * + */ +#define ioremap(cookie, size) __uc32_ioremap(cookie, size) +#define ioremap_cached(cookie, size) __uc32_ioremap_cached(cookie, size) +#define iounmap(cookie) __uc32_iounmap(cookie) + +/* + * Convert a physical pointer to a virtual kernel pointer for /dev/mem + * access + */ +#undef xlate_dev_mem_ptr +#define xlate_dev_mem_ptr(p) __va(p) + +#define HAVE_ARCH_PIO_SIZE +#define PIO_OFFSET (unsigned int)(PCI_IOBASE) +#define PIO_MASK (unsigned int)(IO_SPACE_LIMIT) +#define PIO_RESERVED (PIO_OFFSET + PIO_MASK + 1) + +#endif /* __KERNEL__ */ +#endif /* __UNICORE_IO_H__ */ |