1/* 2 * arch/arm/plat-omap/include/mach/memory.h 3 * 4 * Memory map for OMAP-1510 and 1610 5 * 6 * Copyright (C) 2000 RidgeRun, Inc. 7 * Author: Greg Lonnon <glonnon@ridgerun.com> 8 * 9 * This file was derived from arch/arm/mach-intergrator/include/mach/memory.h 10 * Copyright (C) 1999 ARM Limited 11 * 12 * This program is free software; you can redistribute it and/or modify it 13 * under the terms of the GNU General Public License as published by the 14 * Free Software Foundation; either version 2 of the License, or (at your 15 * option) any later version. 16 * 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 20 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 24 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * You should have received a copy of the GNU General Public License along 29 * with this program; if not, write to the Free Software Foundation, Inc., 30 * 675 Mass Ave, Cambridge, MA 02139, USA. 31 */ 32 33#ifndef __ASM_ARCH_MEMORY_H 34#define __ASM_ARCH_MEMORY_H 35 36/* 37 * Physical DRAM offset. 38 */ 39#if defined(CONFIG_ARCH_OMAP1) 40#define PHYS_OFFSET UL(0x10000000) 41#else 42#define PHYS_OFFSET UL(0x80000000) 43#endif 44 45/* 46 * Bus address is physical address, except for OMAP-1510 Local Bus. 47 * OMAP-1510 bus address is translated into a Local Bus address if the 48 * OMAP bus type is lbus. We do the address translation based on the 49 * device overriding the defaults used in the dma-mapping API. 50 * Note that the is_lbus_device() test is not very efficient on 1510 51 * because of the strncmp(). 52 */ 53#ifdef CONFIG_ARCH_OMAP15XX 54 55/* 56 * OMAP-1510 Local Bus address offset 57 */ 58#define OMAP1510_LB_OFFSET UL(0x30000000) 59 60#define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET) 61#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) 62#define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0)) 63 64#define __arch_page_to_dma(dev, page) \ 65 ({ dma_addr_t __dma = page_to_phys(page); \ 66 if (is_lbus_device(dev)) \ 67 __dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \ 68 __dma; }) 69 70#define __arch_dma_to_page(dev, addr) \ 71 ({ dma_addr_t __dma = addr; \ 72 if (is_lbus_device(dev)) \ 73 __dma += PHYS_OFFSET - OMAP1510_LB_OFFSET; \ 74 phys_to_page(__dma); \ 75 }) 76 77#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \ 78 lbus_to_virt(addr) : \ 79 __phys_to_virt(addr)); }) 80 81#define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \ 82 (dma_addr_t) (is_lbus_device(dev) ? \ 83 virt_to_lbus(__addr) : \ 84 __virt_to_phys(__addr)); }) 85 86#endif /* CONFIG_ARCH_OMAP15XX */ 87 88/* Override the ARM default */ 89#ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 90 91#if (CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE == 0) 92#undef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 93#define CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 2 94#endif 95 96#define CONSISTENT_DMA_SIZE \ 97 (((CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024) 98 99#endif 100 101#endif 102