X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-arm%2Farch-omap%2Fmemory.h;h=3182aa43d4c061c5bc48b0f42f79655ace53b151;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=106af75558131f7e812ea8865fb2c980df21ddd6;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git

diff --git a/include/asm-arm/arch-omap/memory.h b/include/asm-arm/arch-omap/memory.h
index 106af7555..3182aa43d 100644
--- a/include/asm-arm/arch-omap/memory.h
+++ b/include/asm-arm/arch-omap/memory.h
@@ -57,12 +57,30 @@
 
 /*
  * OMAP-1510 bus address is translated into a Local Bus address if the
- * OMAP bus type is lbus. See dmadev_uses_omap_lbus().
+ * OMAP bus type is lbus. We do the address translation based on the
+ * device overriding the defaults used in the dma-mapping API.
+ * Note that the is_lbus_device() test is not very efficient on 1510
+ * because of the strncmp().
  */
 #ifdef CONFIG_ARCH_OMAP1510
-#define bus_to_lbus(x)	((x) + (OMAP1510_LB_OFFSET - PHYS_OFFSET))
-#define lbus_to_bus(x)	((x) - (OMAP1510_LB_OFFSET - PHYS_OFFSET))
-#endif
+
+#define virt_to_lbus(x)		((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
+#define lbus_to_virt(x)		((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
+#define is_lbus_device(dev)	(cpu_is_omap1510() && dev && (strncmp(dev->bus_id, "ohci", 4) == 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_OMAP1510 */
 
 #define PHYS_TO_NID(addr) (0)
 #endif