forked from Minki/linux
9eb7115bcc
This patch takes out IO mapping macros from mach/io.h and puts them in
mach/hardware.h avoiding need to include mach/io.h in various files such as
serial.h, vmalloc.h etc.
The main reason to avoid inclusion of mach/io.h is, when default in/out macros
are overridden by machine specific functions (e.g., in case of PCI I/O), they
result into linker error. An example snippet and error snapshot is listed below.
Following code in mach/io.h:
#define inl(p) my_inl()
static inline unsigned int my_inl(unsigned int addr)
{
if (IS_PCI_IO(addr))
return pci_inl ();
else
return le32_to_cpu(__raw_readl(__typesafe_io(addr)));
}
leads to error:
LD arch/arm/boot/compressed/vmlinux
arch/arm/boot/compressed/misc.o: In function `my_inl':
misc.c:(.text+0x2744): undefined reference to `pci_inl'
make[2]: *** [arch/arm/boot/compressed/vmlinux] Error 1
This is because mach/io.h gets included in arch/arm/boot/compressed/misc.c
through mach/serial.h but pci.c file, which defines 'pci_inl' doesn't get built
into compressed vmlinux.
Signed-off-by: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
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* Hardware definitions common to all DaVinci family processors
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*
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* Author: Kevin Hilman, Deep Root Systems, LLC
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*
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* 2007 (c) Deep Root Systems, LLC. 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_HARDWARE_H
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#define __ASM_ARCH_HARDWARE_H
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/*
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* Before you add anything to ths file:
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*
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* This header is for defines common to ALL DaVinci family chips.
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* Anything that is chip specific should go in <chipname>.h,
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* and the chip/board init code should then explicitly include
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* <chipname>.h
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*/
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#define DAVINCI_SYSTEM_MODULE_BASE 0x01C40000
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/* System control register offsets */
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#define DM64XX_VDD3P3V_PWDN 0x48
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/*
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* I/O mapping
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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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#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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#endif
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#endif /* __ASM_ARCH_HARDWARE_H */
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