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/* 19 * Physical SRAM offset. 20 */ 21#define PLAT_PHYS_OFFSET KS8695_SDRAM_PA 22 23#ifndef __ASSEMBLY__ 24 25#ifdef CONFIG_PCI 26 27/* PCI mappings */ 28#define __virt_to_bus(x) ((x) - PAGE_OFFSET + KS8695_PCIMEM_PA) 29#define __bus_to_virt(x) ((x) - KS8695_PCIMEM_PA + PAGE_OFFSET) 30 31/* Platform-bus mapping */ 32extern struct bus_type platform_bus_type; 33#define is_lbus_device(dev) (dev && dev->bus == &platform_bus_type) 34#define __arch_dma_to_virt(dev, x) ({ (void *) (is_lbus_device(dev) ? \ 35 __phys_to_virt(x) : __bus_to_virt(x)); }) 36#define __arch_virt_to_dma(dev, x) ({ is_lbus_device(dev) ? \ 37 (dma_addr_t)__virt_to_phys((unsigned long)x) \ 38 : (dma_addr_t)__virt_to_bus(x); }) 39#define __arch_pfn_to_dma(dev, pfn) \ 40 ({ dma_addr_t __dma = __pfn_to_phys(pfn); \ 41 if (!is_lbus_device(dev)) \ 42 __dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \ 43 __dma; }) 44 45#define __arch_dma_to_pfn(dev, x) \ 46 ({ dma_addr_t __dma = x; \ 47 if (!is_lbus_device(dev)) \ 48 __dma += PHYS_OFFSET - KS8695_PCIMEM_PA; \ 49 __phys_to_pfn(__dma); \ 50 }) 51 52#endif 53 54#endif 55 56#endif 57