blob: 80309aed534ab0f2073adf49a963cb48e36cb31a (
plain) (
tree)
|
|
/*
* 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 DA8XX_DDR_BASE 0xc0000000
#if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
#error Cannot enable DaVinci and DA8XX platforms concurrently
#elif defined(CONFIG_ARCH_DAVINCI_DA8XX)
#define PHYS_OFFSET DA8XX_DDR_BASE
#else
#define PHYS_OFFSET DAVINCI_DDR_BASE
#endif
/*
* 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)
#define MAX_DMA_ADDRESS (PAGE_OFFSET + (128<<20))
#endif
#endif /* __ASM_ARCH_MEMORY_H */
|
