memory.h
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上传日期:2009-04-28
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- /*
- * linux/include/asm-arm/arch-omap/memory.h
- *
- * Memory map for OMAP-1510 and 1610
- *
- * Copyright (C) 2000 RidgeRun, Inc.
- * Author: Greg Lonnon <glonnon@ridgerun.com>
- *
- * This file was derived from linux/include/asm-arm/arch-intergrator/memory.h
- * Copyright (C) 1999 ARM Limited
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef __ASM_ARCH_MEMORY_H
- #define __ASM_ARCH_MEMORY_H
- /*
- * Physical DRAM offset.
- */
- #if defined(CONFIG_ARCH_OMAP1)
- #define PHYS_OFFSET (0x10000000UL)
- #elif defined(CONFIG_ARCH_OMAP2)
- #define PHYS_OFFSET (0x80000000UL)
- #endif
- /*
- * Conversion between SDRAM and fake PCI bus, used by USB
- * NOTE: Physical address must be converted to Local Bus address
- * on OMAP-1510 only
- */
- /*
- * Bus address is physical address, except for OMAP-1510 Local Bus.
- */
- #define __virt_to_bus(x) __virt_to_phys(x)
- #define __bus_to_virt(x) __phys_to_virt(x)
- /*
- * OMAP-1510 bus address is translated into a Local Bus address if the
- * 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
- /*
- * OMAP-1510 Local Bus address offset
- */
- #define OMAP1510_LB_OFFSET (0x30000000UL)
- #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 */
- #endif