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