Commit 9eb7115b authored by Hemant Pedanekar's avatar Hemant Pedanekar Committed by Kevin Hilman

davinci: Move IO device mapping macros from io.h to hardware.h

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: default avatarHemant Pedanekar <hemantp@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 3e25d5f4
......@@ -24,4 +24,21 @@
/* System control register offsets */
#define DM64XX_VDD3P3V_PWDN 0x48
/*
* I/O mapping
*/
#define IO_PHYS 0x01c00000
#define IO_OFFSET 0xfd000000 /* Virtual IO = 0xfec00000 */
#define IO_SIZE 0x00400000
#define IO_VIRT (IO_PHYS + IO_OFFSET)
#define io_v2p(va) ((va) - IO_OFFSET)
#define __IO_ADDRESS(x) ((x) + IO_OFFSET)
#define IO_ADDRESS(pa) IOMEM(__IO_ADDRESS(pa))
#ifdef __ASSEMBLER__
#define IOMEM(x) x
#else
#define IOMEM(x) ((void __force __iomem *)(x))
#endif
#endif /* __ASM_ARCH_HARDWARE_H */
......@@ -13,18 +13,6 @@
#define IO_SPACE_LIMIT 0xffffffff
/*
* ----------------------------------------------------------------------------
* I/O mapping
* ----------------------------------------------------------------------------
*/
#define IO_PHYS 0x01c00000
#define IO_OFFSET 0xfd000000 /* Virtual IO = 0xfec00000 */
#define IO_SIZE 0x00400000
#define IO_VIRT (IO_PHYS + IO_OFFSET)
#define io_v2p(va) ((va) - IO_OFFSET)
#define __IO_ADDRESS(x) ((x) + IO_OFFSET)
/*
* We don't actually have real ISA nor PCI buses, but there is so many
* drivers out there that might just work if we fake them...
......@@ -33,19 +21,12 @@
#define __mem_pci(a) (a)
#define __mem_isa(a) (a)
#define IO_ADDRESS(pa) IOMEM(__IO_ADDRESS(pa))
#ifdef __ASSEMBLER__
#define IOMEM(x) x
#else
#define IOMEM(x) ((void __force __iomem *)(x))
#ifndef __ASSEMBLER__
#define __arch_ioremap(p, s, t) davinci_ioremap(p, s, t)
#define __arch_iounmap(v) davinci_iounmap(v)
void __iomem *davinci_ioremap(unsigned long phys, size_t size,
unsigned int type);
void davinci_iounmap(volatile void __iomem *addr);
#endif /* __ASSEMBLER__ */
#endif
#endif /* __ASM_ARCH_IO_H */
......@@ -11,7 +11,7 @@
#ifndef __ASM_ARCH_SERIAL_H
#define __ASM_ARCH_SERIAL_H
#include <mach/io.h>
#include <mach/hardware.h>
#define DAVINCI_MAX_NR_UARTS 3
#define DAVINCI_UART0_BASE (IO_PHYS + 0x20000)
......
......@@ -8,7 +8,7 @@
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <mach/io.h>
#include <mach/hardware.h>
/* Allow vmalloc range until the IO virtual range minus a 2M "hole" */
#define VMALLOC_END (IO_VIRT - (2<<20))
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