Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 1 | /* |
| 2 | * DaVinci memory space definitions |
| 3 | * |
| 4 | * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com> |
| 5 | * |
| 6 | * 2007 (c) MontaVista Software, Inc. This file is licensed under |
| 7 | * the terms of the GNU General Public License version 2. This program |
| 8 | * is licensed "as is" without any warranty of any kind, whether express |
| 9 | * or implied. |
| 10 | */ |
| 11 | #ifndef __ASM_ARCH_MEMORY_H |
| 12 | #define __ASM_ARCH_MEMORY_H |
| 13 | |
| 14 | /************************************************************************** |
| 15 | * Included Files |
| 16 | **************************************************************************/ |
| 17 | #include <asm/page.h> |
| 18 | #include <asm/sizes.h> |
| 19 | |
| 20 | /************************************************************************** |
| 21 | * Definitions |
| 22 | **************************************************************************/ |
Mark A. Greer | 55c79a4 | 2009-06-03 18:36:54 -0700 | [diff] [blame] | 23 | #define DAVINCI_DDR_BASE 0x80000000 |
| 24 | #define DA8XX_DDR_BASE 0xc0000000 |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 25 | |
Mark A. Greer | 55c79a4 | 2009-06-03 18:36:54 -0700 | [diff] [blame] | 26 | #if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx) |
| 27 | #error Cannot enable DaVinci and DA8XX platforms concurrently |
| 28 | #elif defined(CONFIG_ARCH_DAVINCI_DA8XX) |
| 29 | #define PHYS_OFFSET DA8XX_DDR_BASE |
| 30 | #else |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 31 | #define PHYS_OFFSET DAVINCI_DDR_BASE |
Mark A. Greer | 55c79a4 | 2009-06-03 18:36:54 -0700 | [diff] [blame] | 32 | #endif |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 33 | |
| 34 | /* |
| 35 | * Increase size of DMA-consistent memory region |
| 36 | */ |
| 37 | #define CONSISTENT_DMA_SIZE (14<<20) |
| 38 | |
| 39 | #ifndef __ASSEMBLY__ |
| 40 | /* |
| 41 | * Restrict DMA-able region to workaround silicon bug. The bug |
| 42 | * restricts buffers available for DMA to video hardware to be |
| 43 | * below 128M |
| 44 | */ |
| 45 | static inline void |
| 46 | __arch_adjust_zones(int node, unsigned long *size, unsigned long *holes) |
| 47 | { |
| 48 | unsigned int sz = (128<<20) >> PAGE_SHIFT; |
| 49 | |
| 50 | if (node != 0) |
| 51 | sz = 0; |
| 52 | |
| 53 | size[1] = size[0] - sz; |
| 54 | size[0] = sz; |
| 55 | } |
| 56 | |
| 57 | #define arch_adjust_zones(node, zone_size, holes) \ |
| 58 | if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes) |
| 59 | |
| 60 | #define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1) |
Russell King | 3719ec5 | 2008-11-30 13:26:47 +0000 | [diff] [blame] | 61 | #define MAX_DMA_ADDRESS (PAGE_OFFSET + (128<<20)) |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 62 | |
| 63 | #endif |
| 64 | |
Kevin Hilman | 7c6337e | 2007-04-30 19:37:19 +0100 | [diff] [blame] | 65 | #endif /* __ASM_ARCH_MEMORY_H */ |