91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
|
|
* 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 UL(0x10000000)
|
|
#elif defined(CONFIG_ARCH_OMAP2)
|
|
#define PHYS_OFFSET UL(0x80000000)
|
|
#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_OMAP15XX
|
|
|
|
/*
|
|
* OMAP-1510 Local Bus address offset
|
|
*/
|
|
#define OMAP1510_LB_OFFSET UL(0x30000000)
|
|
|
|
#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_OMAP15XX */
|
|
|
|
#endif
|
|
|