0560cf5aa5
As Al did for Versatile in 2ad4f86b60,
add a typesafe __io implementation for platforms to use. Convert
platforms to use this new simple typesafe implementation.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/*
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* DaVinci IO address definitions
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*
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* Copied from include/asm/arm/arch-omap/io.h
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#ifndef __ASM_ARCH_IO_H
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#define __ASM_ARCH_IO_H
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#define IO_SPACE_LIMIT 0xffffffff
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/*
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* ----------------------------------------------------------------------------
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* I/O mapping
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* ----------------------------------------------------------------------------
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*/
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#define IO_PHYS 0x01c00000
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#define IO_OFFSET 0xfd000000 /* Virtual IO = 0xfec00000 */
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#define IO_SIZE 0x00400000
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#define IO_VIRT (IO_PHYS + IO_OFFSET)
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#define io_v2p(va) ((va) - IO_OFFSET)
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#define __IO_ADDRESS(x) ((x) + IO_OFFSET)
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/*
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* We don't actually have real ISA nor PCI buses, but there is so many
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* drivers out there that might just work if we fake them...
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*/
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#define __io(a) __typesafe_io(a)
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#define __mem_pci(a) (a)
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#define __mem_isa(a) (a)
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#define IO_ADDRESS(pa) IOMEM(__IO_ADDRESS(pa))
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#ifdef __ASSEMBLER__
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#define IOMEM(x) x
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#else
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#define IOMEM(x) ((void __force __iomem *)(x))
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/*
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* Functions to access the DaVinci IO region
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*
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* NOTE: - Use davinci_read/write[bwl] for physical register addresses
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* - Use __raw_read/write[bwl]() for virtual register addresses
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* - Use IO_ADDRESS(phys_addr) to convert registers to virtual addresses
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* - DO NOT use hardcoded virtual addresses to allow changing the
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* IO address space again if needed
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*/
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#define davinci_readb(a) __raw_readb(IO_ADDRESS(a))
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#define davinci_readw(a) __raw_readw(IO_ADDRESS(a))
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#define davinci_readl(a) __raw_readl(IO_ADDRESS(a))
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#define davinci_writeb(v, a) __raw_writeb(v, IO_ADDRESS(a))
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#define davinci_writew(v, a) __raw_writew(v, IO_ADDRESS(a))
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#define davinci_writel(v, a) __raw_writel(v, IO_ADDRESS(a))
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#endif /* __ASSEMBLER__ */
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#endif /* __ASM_ARCH_IO_H */
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