1 /* 2 * arch/arm/mach-ks8695/include/mach/memory.h 3 * 4 * Copyright (C) 2006 Andrew Victor 5 * 6 * KS8695 Memory definitions 7 * 8 * This file is licensed under the terms of the GNU General Public 9 * License version 2. This program is licensed "as is" without any 10 * warranty of any kind, whether express or implied. 11 */ 12 13 #ifndef __ASM_ARCH_MEMORY_H 14 #define __ASM_ARCH_MEMORY_H 15 16 #include <mach/hardware.h> 17 18 #ifndef __ASSEMBLY__ 19 20 #ifdef CONFIG_PCI 21 22 /* PCI mappings */ 23 #define __virt_to_bus(x) ((x) - PAGE_OFFSET + KS8695_PCIMEM_PA) 24 #define __bus_to_virt(x) ((x) - KS8695_PCIMEM_PA + PAGE_OFFSET) 25 26 /* Platform-bus mapping */ 27 extern struct bus_type platform_bus_type; 28 #define is_lbus_device(dev) (dev && dev->bus == &platform_bus_type) 29 #define __arch_dma_to_virt(dev, x) ({ (void *) (is_lbus_device(dev) ? \ 30 __phys_to_virt(x) : __bus_to_virt(x)); }) 31 #define __arch_virt_to_dma(dev, x) ({ is_lbus_device(dev) ? \ 32 (dma_addr_t)__virt_to_phys((unsigned long)x) \ 33 : (dma_addr_t)__virt_to_bus(x); }) 34 #define __arch_pfn_to_dma(dev, pfn) \ 35 ({ dma_addr_t __dma = __pfn_to_phys(pfn); \ 36 if (!is_lbus_device(dev)) \ 37 __dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \ 38 __dma; }) 39 40 #define __arch_dma_to_pfn(dev, x) \ 41 ({ dma_addr_t __dma = x; \ 42 if (!is_lbus_device(dev)) \ 43 __dma += PHYS_OFFSET - KS8695_PCIMEM_PA; \ 44 __phys_to_pfn(__dma); \ 45 }) 46 47 #endif 48 49 #endif 50 51 #endif 52