diff options
authorHemant Pedanekar <hemantp@ti.com>2009-06-24 10:15:47 +0530
committerKevin Hilman <khilman@deeprootsystems.com>2009-08-26 10:57:01 +0300
commit9eb7115bcc423ae022ebf1844820d58a77c2d435 (patch)
parent3e25d5f4fd7515a0a1e6b68025c483f53196a98c (diff)
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: Hemant Pedanekar <hemantp@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
4 files changed, 21 insertions, 23 deletions
diff --git a/arch/arm/mach-davinci/include/mach/hardware.h b/arch/arm/mach-davinci/include/mach/hardware.h
index 48c77934d51..41c89386e39 100644
--- a/arch/arm/mach-davinci/include/mach/hardware.h
+++ b/arch/arm/mach-davinci/include/mach/hardware.h
@@ -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_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
+#define IOMEM(x) ((void __force __iomem *)(x))
#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/mach-davinci/include/mach/io.h b/arch/arm/mach-davinci/include/mach/io.h
index 2479785405a..62b0a90309a 100644
--- a/arch/arm/mach-davinci/include/mach/io.h
+++ b/arch/arm/mach-davinci/include/mach/io.h
@@ -14,18 +14,6 @@
#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_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
-#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 /* __ASM_ARCH_IO_H */
diff --git a/arch/arm/mach-davinci/include/mach/serial.h b/arch/arm/mach-davinci/include/mach/serial.h
index 57e68e610ee..a584697a9e7 100644
--- a/arch/arm/mach-davinci/include/mach/serial.h
+++ b/arch/arm/mach-davinci/include/mach/serial.h
@@ -11,7 +11,7 @@
-#include <mach/io.h>
+#include <mach/hardware.h>
#define DAVINCI_UART0_BASE (IO_PHYS + 0x20000)
diff --git a/arch/arm/mach-davinci/include/mach/vmalloc.h b/arch/arm/mach-davinci/include/mach/vmalloc.h
index ad51625b660..d49646a8e20 100644
--- a/arch/arm/mach-davinci/include/mach/vmalloc.h
+++ b/arch/arm/mach-davinci/include/mach/vmalloc.h
@@ -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))