c471307437
Patch from Lennert Buytenhek This patch adds support for the Intel ixp23xx series of CPUs. The ixp23xx is an XSC3 based CPU with 512K of L2 cache, a 64bit 66MHz PCI interface, two DDR RAM interfaces, QDR RAM interfaces, two gigabit MACs, two 10/100 MACs, expansion bus, four microengines, a Media and Switch Fabric unit almost identical to the one on the ixp2400, two xscale (8250ish) UARTs and a bunch of other stuff. This patch adds the core ixp23xx support code, and support for the ADI Engineering Roadrunner, Intel IXDP2351, and IP Fabrics Double Espresso platforms. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
|
|
* include/asm-arm/arch-ixp23xx/memory.h
|
|
*
|
|
* Copyright (c) 2003-2004 Intel Corp.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __ASM_ARCH_MEMORY_H
|
|
#define __ASM_ARCH_MEMORY_H
|
|
|
|
#include <asm/hardware.h>
|
|
|
|
/*
|
|
* Physical DRAM offset.
|
|
*/
|
|
#define PHYS_OFFSET (0x00000000)
|
|
|
|
|
|
/*
|
|
* Virtual view <-> DMA view memory address translations
|
|
* virt_to_bus: Used to translate the virtual address to an
|
|
* address suitable to be passed to set_dma_addr
|
|
* bus_to_virt: Used to convert an address for DMA operations
|
|
* to an address that the kernel can use.
|
|
*/
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#define __virt_to_bus(v) \
|
|
({ unsigned int ret; \
|
|
ret = ((__virt_to_phys(v) - 0x00000000) + \
|
|
(*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)); \
|
|
ret; })
|
|
|
|
#define __bus_to_virt(b) \
|
|
({ unsigned int data; \
|
|
data = *((volatile int *)IXP23XX_PCI_SDRAM_BAR); \
|
|
__phys_to_virt((((b - (data & 0xfffffff0)) + 0x00000000))); })
|
|
|
|
#endif
|
|
|
|
|
|
#endif
|