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Diffstat (limited to 'include/asm-arm/arch-omap/memory.h')
| -rw-r--r-- | include/asm-arm/arch-omap/memory.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/memory.h b/include/asm-arm/arch-omap/memory.h new file mode 100644 index 0000000..f6b57dd --- /dev/null +++ b/include/asm-arm/arch-omap/memory.h @@ -0,0 +1,87 @@ +/* + * 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. + */ +#define PHYS_OFFSET (0x10000000UL) + +/* + * OMAP-1510 Local Bus address offset + */ +#define OMAP1510_LB_OFFSET (0x30000000UL) + +/* + * 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 + +#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 */ + +#define PHYS_TO_NID(addr) (0) +#endif + |