1 /* 2 * linux/include/asm-arm/arch-omap/memory.h 3 * 4 * Memory map for OMAP-1510 and 1610 5 * 6 * Copyright (C) 2000 RidgeRun, Inc. 7 * Author: Greg Lonnon <glonnon (at) ridgerun.com> 8 * 9 * This file was derived from linux/include/asm-arm/arch-intergrator/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 #elif defined(CONFIG_ARCH_OMAP2) 42 #define PHYS_OFFSET UL(0x80000000) 43 #endif 44 45 /* 46 * Conversion between SDRAM and fake PCI bus, used by USB 47 * NOTE: Physical address must be converted to Local Bus address 48 * on OMAP-1510 only 49 */ 50 51 /* 52 * Bus address is physical address, except for OMAP-1510 Local Bus. 53 */ 54 #define __virt_to_bus(x) __virt_to_phys(x) 55 #define __bus_to_virt(x) __phys_to_virt(x) 56 57 /* 58 * OMAP-1510 bus address is translated into a Local Bus address if the 59 * OMAP bus type is lbus. We do the address translation based on the 60 * device overriding the defaults used in the dma-mapping API. 61 * Note that the is_lbus_device() test is not very efficient on 1510 62 * because of the strncmp(). 63 */ 64 #ifdef CONFIG_ARCH_OMAP15XX 65 66 /* 67 * OMAP-1510 Local Bus address offset 68 */ 69 #define OMAP1510_LB_OFFSET UL(0x30000000) 70 71 #define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET) 72 #define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) 73 #define is_lbus_device(dev) (cpu_is_omap1510() && dev && (strncmp(dev->bus_id, "ohci", 4) == 0)) 74 75 #define __arch_page_to_dma(dev, page) ({is_lbus_device(dev) ? \ 76 (dma_addr_t)virt_to_lbus(page_address(page)) : \ 77 (dma_addr_t)__virt_to_bus(page_address(page));}) 78 79 #define __arch_dma_to_virt(dev, addr) ({is_lbus_device(dev) ? \ 80 lbus_to_virt(addr) : \ 81 __bus_to_virt(addr);}) 82 83 #define __arch_virt_to_dma(dev, addr) ({is_lbus_device(dev) ? \ 84 virt_to_lbus(addr) : \ 85 __virt_to_bus(addr);}) 86 87 #endif /* CONFIG_ARCH_OMAP15XX */ 88 89 /* Override the ARM default */ 90 #ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 91 92 #if (CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE == 0) 93 #undef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 94 #define CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 2 95 #endif 96 97 #define CONSISTENT_DMA_SIZE \ 98 (((CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024) 99 100 #endif 101 102 #endif 103 104
