omap: Split OMAP2_IO_ADDRESS to L3 and L4

This patch splits OMAP2_IO_ADDRESS to OMAP2_L3_IO_ADDRESS and
OMAP2_L4_IO_ADDRESS to reclaim more IO space.

The omap_read*() and omap_write*() functions will work only over
L4 address space. Current omap kernel stack uses these functions
only to access registers over L4 io address space

Note that these macros should only be used when ioremap does
not work. Please use ioremap instead in all new code.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

4 files changed, 19 insertions, 14 deletions

diff --git a/arch/arm/plat-omap/include/mach/control.h b/arch/arm/plat-omap/include/mach/control.h
index 826d317cdbec..805819f3a868 100644
--- a/arch/arm/plat-omap/include/mach/control.h
+++ b/arch/arm/plat-omap/include/mach/control.h
@@ -20,15 +20,18 @@
 
 #ifndef __ASSEMBLY__
 #define OMAP242X_CTRL_REGADDR(reg)                                      \
-        OMAP2_IO_ADDRESS(OMAP242X_CTRL_BASE + (reg))
+                OMAP2_L4_IO_ADDRESS(OMAP242X_CTRL_BASE + (reg))
 #define OMAP243X_CTRL_REGADDR(reg)                                      \
-        OMAP2_IO_ADDRESS(OMAP243X_CTRL_BASE + (reg))
+                OMAP2_L4_IO_ADDRESS(OMAP243X_CTRL_BASE + (reg))
 #define OMAP343X_CTRL_REGADDR(reg)                                      \
-        OMAP2_IO_ADDRESS(OMAP343X_CTRL_BASE + (reg))
+                OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE + (reg))
 #else
-#define OMAP242X_CTRL_REGADDR(reg)      OMAP2_IO_ADDRESS(OMAP242X_CTRL_BASE + (reg))
-#define OMAP243X_CTRL_REGADDR(reg)      OMAP2_IO_ADDRESS(OMAP243X_CTRL_BASE + (reg))
-#define OMAP343X_CTRL_REGADDR(reg)      OMAP2_IO_ADDRESS(OMAP343X_CTRL_BASE + (reg))
+#define OMAP242X_CTRL_REGADDR(reg)                                      \
+                OMAP2_L4_IO_ADDRESS(OMAP242X_CTRL_BASE + (reg))
+#define OMAP243X_CTRL_REGADDR(reg)                                      \
+                OMAP2_L4_IO_ADDRESS(OMAP243X_CTRL_BASE + (reg))
+#define OMAP343X_CTRL_REGADDR(reg)                                      \
+                OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE + (reg))
 #endif /* __ASSEMBLY__ */
 
 /*
diff --git a/arch/arm/plat-omap/include/mach/entry-macro.S b/arch/arm/plat-omap/include/mach/entry-macro.S
index 3bad928c6315..2aea5665f58f 100644
--- a/arch/arm/plat-omap/include/mach/entry-macro.S
+++ b/arch/arm/plat-omap/include/mach/entry-macro.S
@@ -68,9 +68,9 @@
 
 /* REVISIT: This should be set dynamically if CONFIG_MULTI_OMAP2 is selected */
 #if defined(CONFIG_ARCH_OMAP2420) || defined(CONFIG_ARCH_OMAP2430)
-#define OMAP2_VA_IC_BASE                OMAP2_IO_ADDRESS(OMAP24XX_IC_BASE)
+#define OMAP2_VA_IC_BASE                OMAP2_L4_IO_ADDRESS(OMAP24XX_IC_BASE)
 #elif defined(CONFIG_ARCH_OMAP34XX)
-#define OMAP2_VA_IC_BASE                OMAP2_IO_ADDRESS(OMAP34XX_IC_BASE)
+#define OMAP2_VA_IC_BASE                OMAP2_L4_IO_ADDRESS(OMAP34XX_IC_BASE)
 #endif
 #if defined(CONFIG_ARCH_OMAP4)
 #include <mach/omap44xx.h>
@@ -104,7 +104,7 @@
 
                 .endm
 #else
-#define OMAP44XX_VA_GIC_CPU_BASE        OMAP2_IO_ADDRESS(OMAP44XX_GIC_CPU_BASE)
+#define OMAP44XX_VA_GIC_CPU_BASE        OMAP2_L4_IO_ADDRESS(OMAP44XX_GIC_CPU_BASE)
 
                 /*
                  * The interrupt numbering scheme is defined in the
diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h
index 8d32df32b0b1..c475be75267e 100644
--- a/arch/arm/plat-omap/include/mach/io.h
+++ b/arch/arm/plat-omap/include/mach/io.h
@@ -63,9 +63,11 @@
 #define OMAP1_IO_OFFSET         0x01000000      /* Virtual IO = 0xfefb0000 */
 #define OMAP1_IO_ADDRESS(pa)    IOMEM((pa) - OMAP1_IO_OFFSET)
 
-#define OMAP2_IO_OFFSET         0x90000000
-#define OMAP2_IO_ADDRESS(pa)    IOMEM((pa) + OMAP2_IO_OFFSET) /* L3 and L4 */
+#define OMAP2_L3_IO_OFFSET      0x90000000
+#define OMAP2_L3_IO_ADDRESS(pa) IOMEM((pa) + OMAP2_L3_IO_OFFSET) /* L3 */
 
+#define OMAP2_L4_IO_OFFSET      0x90000000
+#define OMAP2_L4_IO_ADDRESS(pa) IOMEM((pa) + OMAP2_L4_IO_OFFSET) /* L4 */
 /*
  * ----------------------------------------------------------------------------
  * Omap1 specific IO mapping
diff --git a/arch/arm/plat-omap/include/mach/sdrc.h b/arch/arm/plat-omap/include/mach/sdrc.h
index 1c09c78a48f2..7b58a5f78ce4 100644
--- a/arch/arm/plat-omap/include/mach/sdrc.h
+++ b/arch/arm/plat-omap/include/mach/sdrc.h
@@ -80,11 +80,11 @@
  */
 
 #define OMAP242X_SMS_REGADDR(reg)                                       \
-                        (void __iomem *)OMAP2_IO_ADDRESS(OMAP2420_SMS_BASE + reg)
+                (void __iomem *)OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE + reg)
 #define OMAP243X_SMS_REGADDR(reg)                                       \
-                        (void __iomem *)OMAP2_IO_ADDRESS(OMAP243X_SMS_BASE + reg)
+                (void __iomem *)OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE + reg)
 #define OMAP343X_SMS_REGADDR(reg)                                       \
-                        (void __iomem *)OMAP2_IO_ADDRESS(OMAP343X_SMS_BASE + reg)
+                (void __iomem *)OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE + reg)
 
 /* SMS register offsets - read/write with sms_{read,write}_reg() */