[ARM] 5573/1: ep93xx: ensure typesafe io

ARM: ep93xx: ensure typesafe io

For the ep93xx platform, all EP93XX_*_BASE defines are based
on virtual addresses.  Ensure that all these defines are
properly typesafe for the __raw_{read/write}* macros.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 47 insertions, 31 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
index 967c079180db..49b256b3ddfc 100644
--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
@@ -52,40 +52,43 @@
 #define EP93XX_AHB_VIRT_BASE            0xfef00000
 #define EP93XX_AHB_SIZE                 0x00100000
 
+#define EP93XX_AHB_IOMEM(x)             IOMEM(EP93XX_AHB_VIRT_BASE + (x))
+
 #define EP93XX_APB_PHYS_BASE            0x80800000
 #define EP93XX_APB_VIRT_BASE            0xfed00000
 #define EP93XX_APB_SIZE                 0x00200000
 
+#define EP93XX_APB_IOMEM(x)             IOMEM(EP93XX_APB_VIRT_BASE + (x))
+
 
 /* AHB peripherals */
-#define EP93XX_DMA_BASE                 ((void __iomem *)               \
-                                         (EP93XX_AHB_VIRT_BASE + 0x00000000))
+#define EP93XX_DMA_BASE                 EP93XX_AHB_IOMEM(0x00000000)
 
-#define EP93XX_ETHERNET_BASE            (EP93XX_AHB_VIRT_BASE + 0x00010000)
 #define EP93XX_ETHERNET_PHYS_BASE       (EP93XX_AHB_PHYS_BASE + 0x00010000)
+#define EP93XX_ETHERNET_BASE            EP93XX_AHB_IOMEM(0x00010000)
 
-#define EP93XX_USB_BASE                 (EP93XX_AHB_VIRT_BASE + 0x00020000)
 #define EP93XX_USB_PHYS_BASE            (EP93XX_AHB_PHYS_BASE + 0x00020000)
+#define EP93XX_USB_BASE                 EP93XX_AHB_IOMEM(0x00020000)
 
-#define EP93XX_RASTER_BASE              (EP93XX_AHB_VIRT_BASE + 0x00030000)
+#define EP93XX_RASTER_BASE              EP93XX_AHB_IOMEM(0x00030000)
 
-#define EP93XX_GRAPHICS_ACCEL_BASE      (EP93XX_AHB_VIRT_BASE + 0x00040000)
+#define EP93XX_GRAPHICS_ACCEL_BASE      EP93XX_AHB_IOMEM(0x00040000)
 
-#define EP93XX_SDRAM_CONTROLLER_BASE    (EP93XX_AHB_VIRT_BASE + 0x00060000)
+#define EP93XX_SDRAM_CONTROLLER_BASE    EP93XX_AHB_IOMEM(0x00060000)
 
-#define EP93XX_PCMCIA_CONTROLLER_BASE   (EP93XX_AHB_VIRT_BASE + 0x00080000)
+#define EP93XX_PCMCIA_CONTROLLER_BASE   EP93XX_AHB_IOMEM(0x00080000)
 
-#define EP93XX_BOOT_ROM_BASE            (EP93XX_AHB_VIRT_BASE + 0x00090000)
+#define EP93XX_BOOT_ROM_BASE            EP93XX_AHB_IOMEM(0x00090000)
 
-#define EP93XX_IDE_BASE                 (EP93XX_AHB_VIRT_BASE + 0x000a0000)
+#define EP93XX_IDE_BASE                 EP93XX_AHB_IOMEM(0x000a0000)
 
-#define EP93XX_VIC1_BASE                (EP93XX_AHB_VIRT_BASE + 0x000b0000)
+#define EP93XX_VIC1_BASE                EP93XX_AHB_IOMEM(0x000b0000)
 
-#define EP93XX_VIC2_BASE                (EP93XX_AHB_VIRT_BASE + 0x000c0000)
+#define EP93XX_VIC2_BASE                EP93XX_AHB_IOMEM(0x000c0000)
 
 
 /* APB peripherals */
-#define EP93XX_TIMER_BASE               (EP93XX_APB_VIRT_BASE + 0x00010000)
+#define EP93XX_TIMER_BASE               EP93XX_APB_IOMEM(0x00010000)
 #define EP93XX_TIMER_REG(x)             (EP93XX_TIMER_BASE + (x))
 #define EP93XX_TIMER1_LOAD              EP93XX_TIMER_REG(0x00)
 #define EP93XX_TIMER1_VALUE             EP93XX_TIMER_REG(0x04)
@@ -102,11 +105,11 @@
 #define EP93XX_TIMER3_CONTROL           EP93XX_TIMER_REG(0x88)
 #define EP93XX_TIMER3_CLEAR             EP93XX_TIMER_REG(0x8c)
 
-#define EP93XX_I2S_BASE                 (EP93XX_APB_VIRT_BASE + 0x00020000)
+#define EP93XX_I2S_BASE                 EP93XX_APB_IOMEM(0x00020000)
 
-#define EP93XX_SECURITY_BASE            (EP93XX_APB_VIRT_BASE + 0x00030000)
+#define EP93XX_SECURITY_BASE            EP93XX_APB_IOMEM(0x00030000)
 
-#define EP93XX_GPIO_BASE                (EP93XX_APB_VIRT_BASE + 0x00040000)
+#define EP93XX_GPIO_BASE                EP93XX_APB_IOMEM(0x00040000)
 #define EP93XX_GPIO_REG(x)              (EP93XX_GPIO_BASE + (x))
 #define EP93XX_GPIO_F_INT_TYPE1         EP93XX_GPIO_REG(0x4c)
 #define EP93XX_GPIO_F_INT_TYPE2         EP93XX_GPIO_REG(0x50)
@@ -124,32 +127,32 @@
 #define EP93XX_GPIO_B_INT_ENABLE        EP93XX_GPIO_REG(0xb8)
 #define EP93XX_GPIO_B_INT_STATUS        EP93XX_GPIO_REG(0xbc)
 
-#define EP93XX_AAC_BASE                 (EP93XX_APB_VIRT_BASE + 0x00080000)
+#define EP93XX_AAC_BASE                 EP93XX_APB_IOMEM(0x00080000)
 
-#define EP93XX_SPI_BASE                 (EP93XX_APB_VIRT_BASE + 0x000a0000)
+#define EP93XX_SPI_BASE                 EP93XX_APB_IOMEM(0x000a0000)
 
-#define EP93XX_IRDA_BASE                (EP93XX_APB_VIRT_BASE + 0x000b0000)
+#define EP93XX_IRDA_BASE                EP93XX_APB_IOMEM(0x000b0000)
 
-#define EP93XX_UART1_BASE               (EP93XX_APB_VIRT_BASE + 0x000c0000)
 #define EP93XX_UART1_PHYS_BASE          (EP93XX_APB_PHYS_BASE + 0x000c0000)
+#define EP93XX_UART1_BASE               EP93XX_APB_IOMEM(0x000c0000)
 
-#define EP93XX_UART2_BASE               (EP93XX_APB_VIRT_BASE + 0x000d0000)
 #define EP93XX_UART2_PHYS_BASE          (EP93XX_APB_PHYS_BASE + 0x000d0000)
+#define EP93XX_UART2_BASE               EP93XX_APB_IOMEM(0x000d0000)
 
-#define EP93XX_UART3_BASE               (EP93XX_APB_VIRT_BASE + 0x000e0000)
 #define EP93XX_UART3_PHYS_BASE          (EP93XX_APB_PHYS_BASE + 0x000e0000)
+#define EP93XX_UART3_BASE               EP93XX_APB_IOMEM(0x000e0000)
 
-#define EP93XX_KEY_MATRIX_BASE          (EP93XX_APB_VIRT_BASE + 0x000f0000)
+#define EP93XX_KEY_MATRIX_BASE          EP93XX_APB_IOMEM(0x000f0000)
 
-#define EP93XX_ADC_BASE                 (EP93XX_APB_VIRT_BASE + 0x00100000)
-#define EP93XX_TOUCHSCREEN_BASE         (EP93XX_APB_VIRT_BASE + 0x00100000)
+#define EP93XX_ADC_BASE                 EP93XX_APB_IOMEM(0x00100000)
+#define EP93XX_TOUCHSCREEN_BASE         EP93XX_APB_IOMEM(0x00100000)
 
-#define EP93XX_PWM_BASE                 (EP93XX_APB_VIRT_BASE + 0x00110000)
+#define EP93XX_PWM_BASE                 EP93XX_APB_IOMEM(0x00110000)
 
-#define EP93XX_RTC_BASE                 (EP93XX_APB_VIRT_BASE + 0x00120000)
 #define EP93XX_RTC_PHYS_BASE            (EP93XX_APB_PHYS_BASE + 0x00120000)
+#define EP93XX_RTC_BASE                 EP93XX_APB_IOMEM(0x00120000)
 
-#define EP93XX_SYSCON_BASE              (EP93XX_APB_VIRT_BASE + 0x00130000)
+#define EP93XX_SYSCON_BASE              EP93XX_APB_IOMEM(0x00130000)
 #define EP93XX_SYSCON_REG(x)            (EP93XX_SYSCON_BASE + (x))
 #define EP93XX_SYSCON_POWER_STATE       EP93XX_SYSCON_REG(0x00)
 #define EP93XX_SYSCON_PWRCNT            EP93XX_SYSCON_REG(0x04)
@@ -179,7 +182,7 @@
 #define EP93XX_SYSCON_DEVICE_CONFIG_U1EN                (1<<18)
 #define EP93XX_SYSCON_SWLOCK            EP93XX_SYSCON_REG(0xc0)
 
-#define EP93XX_WATCHDOG_BASE            (EP93XX_APB_VIRT_BASE + 0x00140000)
+#define EP93XX_WATCHDOG_BASE            EP93XX_APB_IOMEM(0x00140000)
 
 
 #endif
diff --git a/arch/arm/mach-ep93xx/include/mach/io.h b/arch/arm/mach-ep93xx/include/mach/io.h
index fd5f081cc8b7..cebcc1c53d63 100644
--- a/arch/arm/mach-ep93xx/include/mach/io.h
+++ b/arch/arm/mach-ep93xx/include/mach/io.h
@@ -1,8 +1,21 @@
 /*
  * arch/arm/mach-ep93xx/include/mach/io.h
  */
+#ifndef __ASM_MACH_IO_H
+#define __ASM_MACH_IO_H
 
 #define IO_SPACE_LIMIT          0xffffffff
 
-#define __io(p)         __typesafe_io(p)
-#define __mem_pci(p)    (p)
+#define __io(p)                 __typesafe_io(p)
+#define __mem_pci(p)            (p)
+
+/*
+ * A typesafe __io() variation for variable initialisers
+ */
+#ifdef __ASSEMBLER__
+#define IOMEM(p)                p
+#else
+#define IOMEM(p)                ((void __iomem __force *)(p))
+#endif
+
+#endif /* __ASM_MACH_IO_H */