[ARM] 4182/1: iop3xx: fix the ioremap implementation to not remap static ranges

Implement a custom ioremap implementation for iop3xx. This saves
establishing new mappings. It also cleans up the PCI IO resource to be a
physical address rather than a virtual address as Russell pointed out on
the original iop13xx port.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 30 insertions, 3 deletions

diff --git a/include/asm-arm/arch-iop32x/io.h b/include/asm-arm/arch-iop32x/io.h
index 12d9ee02cde3..5f570a598a37 100644
--- a/include/asm-arm/arch-iop32x/io.h
+++ b/include/asm-arm/arch-iop32x/io.h
@@ -13,10 +13,16 @@
 
 #include <asm/hardware.h>
 
-#define IO_SPACE_LIMIT          0xffffffff
+extern void __iomem * __ioremap(unsigned long, size_t, unsigned long);
+extern void __iomem *__iop3xx_ioremap(unsigned long cookie, size_t size,
+        unsigned long flags);
+extern void __iop3xx_iounmap(void __iomem *addr);
 
-#define __io(p)                 ((void __iomem *)(p))
+#define IO_SPACE_LIMIT          0xffffffff
+#define __io(p)         ((void __iomem *)IOP3XX_PCI_IO_PHYS_TO_VIRT(p))
 #define __mem_pci(a)            (a)
 
+#define __arch_ioremap(a, s, f) __iop3xx_ioremap(a, s, f)
+#define __arch_iounmap(a)        __iop3xx_iounmap(a)
 
 #endif
diff --git a/include/asm-arm/arch-iop33x/io.h b/include/asm-arm/arch-iop33x/io.h
index c017402bab96..1bb5071e1fa8 100644
--- a/include/asm-arm/arch-iop33x/io.h
+++ b/include/asm-arm/arch-iop33x/io.h
@@ -13,9 +13,16 @@
 
 #include <asm/hardware.h>
 
+extern void __iomem * __ioremap(unsigned long, size_t, unsigned long);
+extern void __iomem *__iop3xx_ioremap(unsigned long cookie, size_t size,
+        unsigned long flags);
+extern void __iop3xx_iounmap(void __iomem *addr);
+
 #define IO_SPACE_LIMIT          0xffffffff
-#define __io(p)                 ((void __iomem *)(p))
+#define __io(p)         ((void __iomem *)IOP3XX_PCI_IO_PHYS_TO_VIRT(p))
 #define __mem_pci(a)            (a)
 
+#define __arch_ioremap(a, s, f) __iop3xx_ioremap(a, s, f)
+#define __arch_iounmap(a)        __iop3xx_iounmap(a)
 
 #endif
diff --git a/include/asm-arm/hardware/iop3xx.h b/include/asm-arm/hardware/iop3xx.h
index 13ac8a4cd01f..adb96c72ecdd 100644
--- a/include/asm-arm/hardware/iop3xx.h
+++ b/include/asm-arm/hardware/iop3xx.h
@@ -37,6 +37,13 @@ extern void gpio_line_set(int line, int value);
 #define IOP3XX_PERIPHERAL_PHYS_BASE     0xffffe000
 #define IOP3XX_PERIPHERAL_VIRT_BASE     0xfeffe000
 #define IOP3XX_PERIPHERAL_SIZE          0x00002000
+#define IOP3XX_PERIPHERAL_UPPER_PA (IOP3XX_PERIPHERAL_PHYS_BASE +\
+                                        IOP3XX_PERIPHERAL_SIZE - 1)
+#define IOP3XX_PERIPHERAL_UPPER_VA (IOP3XX_PERIPHERAL_VIRT_BASE +\
+                                        IOP3XX_PERIPHERAL_SIZE - 1)
+#define IOP3XX_PMMR_PHYS_TO_VIRT(addr) (u32) ((u32) addr -\
+                                        (IOP3XX_PERIPHERAL_PHYS_BASE\
+                                        - IOP3XX_PERIPHERAL_VIRT_BASE))
 #define IOP3XX_REG_ADDR(reg)            (IOP3XX_PERIPHERAL_VIRT_BASE + (reg))
 
 /* Address Translation Unit  */
@@ -258,6 +265,13 @@ extern void gpio_line_set(int line, int value);
 #define IOP3XX_PCI_LOWER_IO_PA          0x90000000
 #define IOP3XX_PCI_LOWER_IO_VA          0xfe000000
 #define IOP3XX_PCI_LOWER_IO_BA          (*IOP3XX_OIOWTVR)
+#define IOP3XX_PCI_UPPER_IO_PA          (IOP3XX_PCI_LOWER_IO_PA +\
+                                        IOP3XX_PCI_IO_WINDOW_SIZE - 1)
+#define IOP3XX_PCI_UPPER_IO_VA          (IOP3XX_PCI_LOWER_IO_VA +\
+                                        IOP3XX_PCI_IO_WINDOW_SIZE - 1)
+#define IOP3XX_PCI_IO_PHYS_TO_VIRT(addr) (((u32) addr -\
+                                        IOP3XX_PCI_LOWER_IO_PA) +\
+                                        IOP3XX_PCI_LOWER_IO_VA)
 
 
 #ifndef __ASSEMBLY__