60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* DaVinci memory space definitions
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*
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* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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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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* Included Files
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**************************************************************************/
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#include <asm/page.h>
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#include <asm/sizes.h>
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/**************************************************************************
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* Definitions
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**************************************************************************/
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#define DAVINCI_DDR_BASE 0x80000000
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#define DAVINCI_IRAM_BASE 0x00008000 /* ARM Internal RAM */
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#define PHYS_OFFSET DAVINCI_DDR_BASE
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/*
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* Increase size of DMA-consistent memory region
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*/
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#define CONSISTENT_DMA_SIZE (14<<20)
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#ifndef __ASSEMBLY__
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/*
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* Restrict DMA-able region to workaround silicon bug. The bug
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* restricts buffers available for DMA to video hardware to be
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* below 128M
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*/
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static inline void
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__arch_adjust_zones(int node, unsigned long *size, unsigned long *holes)
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{
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unsigned int sz = (128<<20) >> PAGE_SHIFT;
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if (node != 0)
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sz = 0;
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size[1] = size[0] - sz;
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size[0] = sz;
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}
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#define arch_adjust_zones(node, zone_size, holes) \
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if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes)
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#define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1)
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#define MAX_DMA_ADDRESS (PAGE_OFFSET + (128<<20))
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#endif
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#endif /* __ASM_ARCH_MEMORY_H */
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