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f09b997999
Patch from Nicolas Pitre This patch allows for assorted type of cleanups by letting assembly code use the same set of defines for constant values and avoid duplicated definitions that might not always be in sync, or that might simply be confusing due to the different names for the same thing. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
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* linux/include/asm-arm/arch-omap/memory.h
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*
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* Memory map for OMAP-1510 and 1610
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*
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* Copyright (C) 2000 RidgeRun, Inc.
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* Author: Greg Lonnon <glonnon@ridgerun.com>
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*
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* This file was derived from linux/include/asm-arm/arch-intergrator/memory.h
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* Copyright (C) 1999 ARM Limited
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ASM_ARCH_MEMORY_H
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#define __ASM_ARCH_MEMORY_H
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/*
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* Physical DRAM offset.
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*/
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#if defined(CONFIG_ARCH_OMAP1)
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#define PHYS_OFFSET UL(0x10000000)
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#elif defined(CONFIG_ARCH_OMAP2)
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#define PHYS_OFFSET UL(0x80000000)
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#endif
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/*
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* Conversion between SDRAM and fake PCI bus, used by USB
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* NOTE: Physical address must be converted to Local Bus address
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* on OMAP-1510 only
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*/
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/*
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* Bus address is physical address, except for OMAP-1510 Local Bus.
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*/
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#define __virt_to_bus(x) __virt_to_phys(x)
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#define __bus_to_virt(x) __phys_to_virt(x)
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/*
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* OMAP-1510 bus address is translated into a Local Bus address if the
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* OMAP bus type is lbus. We do the address translation based on the
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* device overriding the defaults used in the dma-mapping API.
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* Note that the is_lbus_device() test is not very efficient on 1510
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* because of the strncmp().
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*/
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#ifdef CONFIG_ARCH_OMAP1510
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/*
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* OMAP-1510 Local Bus address offset
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*/
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#define OMAP1510_LB_OFFSET UL(0x30000000)
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#define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
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#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
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#define is_lbus_device(dev) (cpu_is_omap1510() && dev && (strncmp(dev->bus_id, "ohci", 4) == 0))
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#define __arch_page_to_dma(dev, page) ({is_lbus_device(dev) ? \
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(dma_addr_t)virt_to_lbus(page_address(page)) : \
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(dma_addr_t)__virt_to_bus(page_address(page));})
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#define __arch_dma_to_virt(dev, addr) ({is_lbus_device(dev) ? \
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lbus_to_virt(addr) : \
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__bus_to_virt(addr);})
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#define __arch_virt_to_dma(dev, addr) ({is_lbus_device(dev) ? \
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virt_to_lbus(addr) : \
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__virt_to_bus(addr);})
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#endif /* CONFIG_ARCH_OMAP1510 */
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#endif
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