forked from luck/tmp_suning_uos_patched
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
/*
|
|
* linux/include/asm-arm/arch-ixp4xx/memory.h
|
|
*
|
|
* Copyright (c) 2001-2004 MontaVista Software, Inc.
|
|
*/
|
|
|
|
#ifndef __ASM_ARCH_MEMORY_H
|
|
#define __ASM_ARCH_MEMORY_H
|
|
|
|
#include <asm/sizes.h>
|
|
|
|
/*
|
|
* Physical DRAM offset.
|
|
*/
|
|
#define PHYS_OFFSET (0x00000000UL)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/*
|
|
* Only first 64MB of memory can be accessed via PCI.
|
|
* We use GFP_DMA to allocate safe buffers to do map/unmap.
|
|
* This is really ugly and we need a better way of specifying
|
|
* DMA-capable regions of memory.
|
|
*/
|
|
static inline void __arch_adjust_zones(int node, unsigned long *zone_size,
|
|
unsigned long *zhole_size)
|
|
{
|
|
unsigned int sz = SZ_64M >> PAGE_SHIFT;
|
|
|
|
/*
|
|
* Only adjust if > 64M on current system
|
|
*/
|
|
if (node || (zone_size[0] <= sz))
|
|
return;
|
|
|
|
zone_size[1] = zone_size[0] - sz;
|
|
zone_size[0] = sz;
|
|
zhole_size[1] = zhole_size[0];
|
|
zhole_size[0] = 0;
|
|
}
|
|
|
|
#define arch_adjust_zones(node, size, holes) \
|
|
__arch_adjust_zones(node, size, holes)
|
|
|
|
#define ISA_DMA_THRESHOLD (SZ_64M - 1)
|
|
|
|
#endif
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* These are dummies for now.
|
|
*/
|
|
#define __virt_to_bus(x) __virt_to_phys(x)
|
|
#define __bus_to_virt(x) __phys_to_virt(x)
|
|
|
|
#endif
|