This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-arm / arch-iop13xx / memory.h

diff --git a/include/asm-arm/arch-iop13xx/memory.h b/include/asm-arm/arch-iop13xx/memory.h
new file mode 100644 (file)
index 0000000..031a0fa
--- /dev/null
+++ b/include/asm-arm/arch-iop13xx/memory.h
@@ -0,0 +1,64 @@
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/arch/hardware.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET    UL(0x00000000)
+#define TASK_SIZE      UL(0x3f000000)
+#define PAGE_OFFSET    UL(0x40000000)
+#define TASK_UNMAPPED_BASE ((TASK_SIZE + 0x01000000) / 3)
+
+#ifndef __ASSEMBLY__
+
+#if defined(CONFIG_ARCH_IOP13XX)
+#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
+#define IOP13XX_PMMR_V_END   (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
+#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
+#define IOP13XX_PMMR_P_END   (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
+
+/*
+ * Virtual view <-> PCI DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ *             address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ *             to an address that the kernel can use.
+ */
+
+/* RAM has 1:1 mapping on the PCIe/x Busses */
+#define __virt_to_bus(x)       (__virt_to_phys(x))
+#define __bus_to_virt(x)    (__phys_to_virt(x))
+
+#define virt_to_lbus(x)                                           \
+(( ((void*)(x) >= (void*)IOP13XX_PMMR_V_START) &&                 \
+((void*)(x) < (void*)IOP13XX_PMMR_V_END) ) ?                      \
+((x) - IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_PHYS_MEM_BASE) : \
+((x) - PAGE_OFFSET + PHYS_OFFSET))
+
+#define lbus_to_virt(x)                                            \
+(( ((x) >= IOP13XX_PMMR_P_START) && ((x) < IOP13XX_PMMR_P_END) ) ? \
+((x) - IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_VIRT_MEM_BASE ) : \
+((x) - PHYS_OFFSET + PAGE_OFFSET))
+
+/* Device is an lbus device if it is on the platform bus of the IOP13XX */
+#define is_lbus_device(dev) (dev &&\
+                            (strncmp(dev->bus->name, "platform", 8) == 0))
+
+#define __arch_page_to_dma(dev, page)                                  \
+({is_lbus_device(dev) ? (dma_addr_t)virt_to_lbus(page_address(page)) : \
+(dma_addr_t)__virt_to_bus(page_address(page));})
+
+#define __arch_dma_to_virt(dev, addr) \
+({is_lbus_device(dev) ? lbus_to_virt(addr) : __bus_to_virt(addr);})
+
+#define __arch_virt_to_dma(dev, addr) \
+({is_lbus_device(dev) ? virt_to_lbus(addr) : __virt_to_bus(addr);})
+
+#endif /* CONFIG_ARCH_IOP13XX */
+#endif /* !ASSEMBLY */
+
+#define PFN_TO_NID(addr)       (0)
+
+#endif