PB926 PCI IO region support.

arch/arm/mach-versatile/core.c

@@ -54,7 +54,7 @@
  *
  * Setup a VA for the Versatile Vectored Interrupt Controller.
  */
-#define __io_address(n)		__io(IO_ADDRESS(n))
+#define __io_address(n)		((void __iomem *)IO_ADDRESS(n))
 #define VA_VIC_BASE		__io_address(VERSATILE_VIC_BASE)
 #define VA_SIC_BASE		__io_address(VERSATILE_SIC_BASE)
 
@@ -198,26 +198,13 @@ static struct map_desc versatile_io_desc[] __initdata = {
 		.pfn		= __phys_to_pfn(VERSATILE_PCI_CFG_BASE),
 		.length		= VERSATILE_PCI_CFG_BASE_SIZE,
 		.type		= MT_DEVICE
-	},
-#if 0
- 	{
-		.virtual	=  VERSATILE_PCI_VIRT_MEM_BASE0,
-		.pfn		= __phys_to_pfn(VERSATILE_PCI_MEM_BASE0),
-		.length		= SZ_16M,
-		.type		= MT_DEVICE
 	}, {
-		.virtual	=  VERSATILE_PCI_VIRT_MEM_BASE1,
-		.pfn		= __phys_to_pfn(VERSATILE_PCI_MEM_BASE1),
-		.length		= SZ_16M,
-		.type		= MT_DEVICE
-	}, {
-		.virtual	=  VERSATILE_PCI_VIRT_MEM_BASE2,
-		.pfn		= __phys_to_pfn(VERSATILE_PCI_MEM_BASE2),
+		.virtual	=  (unsigned long)VERSATILE_PCI_IO_VIRT_BASE,
+		.pfn		= __phys_to_pfn(VERSATILE_PCI_MEM_BASE0),
 		.length		= SZ_16M,
 		.type		= MT_DEVICE
 	},
 #endif
-#endif
 };
 
 void __init versatile_map_io(void)

arch/arm/mach-versatile/pci.c

@@ -36,7 +36,7 @@
  *
  * Mem   50000000 - 5FFFFFFF      LB_BASE0/LB_MAP0,  non prefetch
  * Mem   60000000 - 6FFFFFFF      LB_BASE1/LB_MAP1,  prefetch
- * IO    44000000 - 4FFFFFFF      LB_BASE2/LB_MAP2,  IO
+ * IO    43000000 - 4FFFFFFF      LB_BASE2/LB_MAP2,  IO
  * Cfg   42000000 - 42FFFFFF	  PCI config
  *
  */
@@ -249,6 +249,7 @@ int __init pci_versatile_setup(int nr, struct pci_sys_data *sys)
 
 	if (nr == 0) {
 		sys->mem_offset = 0;
+		sys->io_offset = VERSATILE_PCI_MEM_BASE0;
 		ret = pci_versatile_setup_resources(sys->resource);
 		if (ret < 0) {
 			printk("pci_versatile_setup: resources... oops?\n");

include/asm-arm/arch-versatile/hardware.h

@@ -28,9 +28,9 @@
 /*
  * PCI space virtual addresses
  */
-#define VERSATILE_PCI_VIRT_BASE		(void __iomem *)0xe8000000ul
-#define VERSATILE_PCI_CFG_VIRT_BASE	(void __iomem *)0xe9000000ul
-
+#define VERSATILE_PCI_VIRT_BASE		(void __iomem *)0xE8000000
+#define VERSATILE_PCI_CFG_VIRT_BASE	(void __iomem *)0xE9000000
+#define VERSATILE_PCI_IO_VIRT_BASE	(void __iomem *)0xEA000000
 #if 0
 #define VERSATILE_PCI_VIRT_MEM_BASE0	0xf4000000
 #define VERSATILE_PCI_VIRT_MEM_BASE1	0xf5000000
@@ -41,7 +41,7 @@
 #endif
 
 /* CIK guesswork */
-#define PCIBIOS_MIN_IO			0x44000000
+#define PCIBIOS_MIN_IO			0x43000000
 #define PCIBIOS_MIN_MEM			0x50000000
 
 #define pcibios_assign_all_busses()     1

include/asm-arm/arch-versatile/io.h

@@ -20,11 +20,15 @@
 #ifndef __ASM_ARM_ARCH_IO_H
 #define __ASM_ARM_ARCH_IO_H
 
+#include <asm/arch/hardware.h>
+
 #define IO_SPACE_LIMIT 0xffffffff
 
+#define __pci_io	(VERSATILE_PCI_IO_VIRT_BASE - VERSATILE_PCI_MEM_BASE0)
+
 static inline void __iomem *__io(unsigned long addr)
 {
-	return (void __iomem *)addr;
+	return (void __iomem *)(addr + __pci_io);
 }
 #define __io(a)	__io(a)
 #define __mem_pci(a)		(a)

include/asm-arm/arch-versatile/platform.h

@@ -231,7 +231,7 @@
 /* PCI space */
 #define VERSATILE_PCI_BASE             0x41000000	/* PCI Interface */
 #define VERSATILE_PCI_CFG_BASE	       0x42000000
-#define VERSATILE_PCI_MEM_BASE0        0x44000000
+#define VERSATILE_PCI_MEM_BASE0        0x43000000
 #define VERSATILE_PCI_MEM_BASE1        0x50000000
 #define VERSATILE_PCI_MEM_BASE2        0x60000000
 /* Sizes of above maps */